diff --git a/Content/Documentation/ScriptingAPI-Documentation.md b/Content/Documentation/ScriptingAPI-Documentation.md index 54557748c..50a0af44d 100644 --- a/Content/Documentation/ScriptingAPI-Documentation.md +++ b/Content/Documentation/ScriptingAPI-Documentation.md @@ -492,7 +492,7 @@ A texture image data. float squish = 1, float blend = 1, float edge_smoothness = 0.04) -- creates a lens distortion normal map (16-bit precision) -- Save(string filename) -- saves texture into a file. Provide the extension in the filename, it should be one of the following: .JPG, .PNG, .TGA, .BMP, .DDS, .KTX2, .BASIS +- Save(string filename) -- saves texture into a file. Provide the extension in the filename, it should be one of the following: .JPG, .PNG, .TGA, .BMP, .DDS ```lua GradientType = { diff --git a/Content/terrain/props.wiscene b/Content/terrain/props.wiscene index 1cf265575..f2ca61f47 100644 Binary files a/Content/terrain/props.wiscene and b/Content/terrain/props.wiscene differ diff --git a/Editor/GeneralWindow.cpp b/Editor/GeneralWindow.cpp index 7ed7959b6..135fb24c2 100644 --- a/Editor/GeneralWindow.cpp +++ b/Editor/GeneralWindow.cpp @@ -663,12 +663,6 @@ void GeneralWindow::Create(EditorComponent* _editor) ddsConvButton.sprites[i].params.corners_rounding[2].radius = 8; ddsConvButton.sprites[i].params.corners_rounding[3].radius = 8; - ktxConvButton.sprites[i].params.enableCornerRounding(); - ktxConvButton.sprites[i].params.corners_rounding[0].radius = 8; - ktxConvButton.sprites[i].params.corners_rounding[1].radius = 8; - ktxConvButton.sprites[i].params.corners_rounding[2].radius = 8; - ktxConvButton.sprites[i].params.corners_rounding[3].radius = 8; - duplicateCollidersButton.sprites[i].params.enableCornerRounding(); duplicateCollidersButton.sprites[i].params.corners_rounding[0].radius = 8; duplicateCollidersButton.sprites[i].params.corners_rounding[1].radius = 8; @@ -927,51 +921,6 @@ void GeneralWindow::Create(EditorComponent* _editor) AddWidget(&ddsConvButton); - ktxConvButton.Create("KTX2 Convert"); - ktxConvButton.SetTooltip("All material textures in the scene will be converted to KTX2 format.\nTHIS MIGHT TAKE LONG, SO GET YOURSELF A COFFEE OR TEA!"); - ktxConvButton.SetSize(XMFLOAT2(100, 18)); - ktxConvButton.OnClick([=](wi::gui::EventArgs args) { - - Scene& scene = editor->GetCurrentScene(); - - wi::unordered_map conv; - for (uint32_t i = 0; i < scene.materials.GetCount(); ++i) - { - MaterialComponent& material = scene.materials[i]; - for (auto& x : material.textures) - { - if (x.GetGPUResource() == nullptr) - continue; - if (has_flag(x.resource.GetTexture().GetDesc().misc_flags, ResourceMiscFlag::SPARSE)) - continue; - if (wi::helper::GetExtensionFromFileName(x.name).compare("KTX2")) - { - x.name = wi::helper::ReplaceExtension(x.name, "KTX2"); - conv[x.name] = x.resource; - } - } - } - - for (auto& x : conv) - { - wi::vector filedata; - if (wi::helper::saveTextureToMemoryFile(x.second.GetTexture(), "KTX2", filedata)) - { - x.second = wi::resourcemanager::Load(x.first, wi::resourcemanager::Flags::NONE, filedata.data(), filedata.size()); - x.second.SetFileData(std::move(filedata)); - } - } - - for (uint32_t i = 0; i < scene.materials.GetCount(); ++i) - { - MaterialComponent& material = scene.materials[i]; - material.CreateRenderData(); - } - - }); - AddWidget(&ktxConvButton); - - duplicateCollidersButton.Create("Delete duplicate colliders"); duplicateCollidersButton.SetTooltip("Duplicate colliders will be removed from the scene."); duplicateCollidersButton.SetSize(XMFLOAT2(100, 18)); @@ -1055,6 +1004,5 @@ void GeneralWindow::ResizeLayout() layout.add_fullwidth(eliminateCoarseCascadesButton); layout.add_fullwidth(ddsConvButton); - layout.add_fullwidth(ktxConvButton); layout.add_fullwidth(duplicateCollidersButton); } diff --git a/Editor/GeneralWindow.h b/Editor/GeneralWindow.h index 5da8d3800..2e547be52 100644 --- a/Editor/GeneralWindow.h +++ b/Editor/GeneralWindow.h @@ -43,7 +43,6 @@ public: wi::gui::Button localizationButton; wi::gui::Button eliminateCoarseCascadesButton; wi::gui::Button ddsConvButton; - wi::gui::Button ktxConvButton; wi::gui::Button duplicateCollidersButton; void ResizeLayout() override; diff --git a/Editor/MaterialWindow.cpp b/Editor/MaterialWindow.cpp index 0fb8fb188..8de4661f6 100644 --- a/Editor/MaterialWindow.cpp +++ b/Editor/MaterialWindow.cpp @@ -212,7 +212,7 @@ void MaterialWindow::Create(EditorComponent* _editor) AddWidget(&outlineCheckBox); preferUncompressedCheckBox.Create("Prefer Uncompressed Textures: "); - preferUncompressedCheckBox.SetTooltip("For uncompressed textures (jpg, png, etc.) or transcodable textures (KTX2, Basis) here it is possible to enable/disable auto block compression on importing. \nBlock compression can reduce GPU memory usage and improve performance, but it can result in degraded quality."); + preferUncompressedCheckBox.SetTooltip("For uncompressed textures (jpg, png, etc.) here it is possible to enable/disable auto block compression on importing. \nBlock compression can reduce GPU memory usage and improve performance, but it can result in degraded quality."); preferUncompressedCheckBox.SetPos(XMFLOAT2(x, y += step)); preferUncompressedCheckBox.SetSize(XMFLOAT2(hei, hei)); preferUncompressedCheckBox.OnClick([&](wi::gui::EventArgs args) { diff --git a/Editor/ModelImporter_GLTF.cpp b/Editor/ModelImporter_GLTF.cpp index f7a589e4d..8aa2a2931 100644 --- a/Editor/ModelImporter_GLTF.cpp +++ b/Editor/ModelImporter_GLTF.cpp @@ -539,10 +539,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) { auto& tex = state.gltfModel.textures[baseColorTexture->second.TextureIndex()]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::BASECOLORMAP].name = img.uri; material.textures[MaterialComponent::BASECOLORMAP].uvset = baseColorTexture->second.TextureTexCoord(); @@ -551,10 +547,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) { auto& tex = state.gltfModel.textures[normalTexture->second.TextureIndex()]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::NORMALMAP].name = img.uri; material.textures[MaterialComponent::NORMALMAP].uvset = normalTexture->second.TextureTexCoord(); @@ -563,10 +555,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) { auto& tex = state.gltfModel.textures[metallicRoughnessTexture->second.TextureIndex()]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SURFACEMAP].name = img.uri; material.textures[MaterialComponent::SURFACEMAP].uvset = metallicRoughnessTexture->second.TextureTexCoord(); @@ -575,10 +563,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) { auto& tex = state.gltfModel.textures[emissiveTexture->second.TextureIndex()]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::EMISSIVEMAP].name = img.uri; material.textures[MaterialComponent::EMISSIVEMAP].uvset = emissiveTexture->second.TextureTexCoord(); @@ -587,10 +571,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) { auto& tex = state.gltfModel.textures[occlusionTexture->second.TextureIndex()]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::OCCLUSIONMAP].name = img.uri; material.textures[MaterialComponent::OCCLUSIONMAP].uvset = occlusionTexture->second.TextureTexCoord(); @@ -676,10 +656,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = ext_transmission->second.Get("transmissionTexture").Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::TRANSMISSIONMAP].name = img.uri; material.textures[MaterialComponent::TRANSMISSIONMAP].uvset = (uint32_t)ext_transmission->second.Get("transmissionTexture").Get("texCoord").Get(); @@ -699,10 +675,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = specularGlossinessWorkflow->second.Get("diffuseTexture").Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::BASECOLORMAP].name = img.uri; material.textures[MaterialComponent::BASECOLORMAP].uvset = (uint32_t)specularGlossinessWorkflow->second.Get("diffuseTexture").Get("texCoord").Get(); @@ -712,10 +684,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = specularGlossinessWorkflow->second.Get("specularGlossinessTexture").Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SURFACEMAP].name = img.uri; material.textures[MaterialComponent::SURFACEMAP].uvset = (uint32_t)specularGlossinessWorkflow->second.Get("specularGlossinessTexture").Get("texCoord").Get(); @@ -765,10 +733,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SHEENCOLORMAP].name = img.uri; material.textures[MaterialComponent::SHEENCOLORMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -784,10 +748,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SHEENROUGHNESSMAP].name = img.uri; material.textures[MaterialComponent::SHEENROUGHNESSMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -819,10 +779,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::CLEARCOATMAP].name = img.uri; material.textures[MaterialComponent::CLEARCOATMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -838,10 +794,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::CLEARCOATROUGHNESSMAP].name = img.uri; material.textures[MaterialComponent::CLEARCOATROUGHNESSMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -852,10 +804,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::CLEARCOATNORMALMAP].name = img.uri; material.textures[MaterialComponent::CLEARCOATNORMALMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -896,10 +844,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SURFACEMAP].name = img.uri; material.textures[MaterialComponent::SURFACEMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -910,10 +854,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SPECULARMAP].name = img.uri; material.textures[MaterialComponent::SPECULARMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -929,10 +869,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::SPECULARMAP].name = img.uri; material.textures[MaterialComponent::SPECULARMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -969,10 +905,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::ANISOTROPYMAP].name = img.uri; material.textures[MaterialComponent::ANISOTROPYMAP].uvset = (uint32_t)param.Get("texCoord").Get(); @@ -995,10 +927,6 @@ void ImportModel_GLTF(const std::string& fileName, Scene& scene) int index = param.Get("index").Get(); auto& tex = state.gltfModel.textures[index]; int img_source = tex.source; - if (tex.extensions.count("KHR_texture_basisu")) - { - img_source = tex.extensions["KHR_texture_basisu"].Get("source").Get(); - } auto& img = state.gltfModel.images[img_source]; material.textures[MaterialComponent::ANISOTROPYMAP].name = img.uri; material.textures[MaterialComponent::ANISOTROPYMAP].uvset = (uint32_t)param.Get("texCoord").Get(); diff --git a/WickedEngine/CommonInclude.h b/WickedEngine/CommonInclude.h index 6b1abc7bb..cbb766282 100644 --- a/WickedEngine/CommonInclude.h +++ b/WickedEngine/CommonInclude.h @@ -183,7 +183,7 @@ inline unsigned long firstbithigh(unsigned long long value) unsigned long bit_index; if (_BitScanReverse64(&bit_index, value)) { - return 31ull - bit_index; + return 63ull - bit_index; } return 0; } diff --git a/WickedEngine/PS5/libgen.h b/WickedEngine/PS5/libgen.h deleted file mode 100644 index e69de29bb..000000000 diff --git a/WickedEngine/PS5/malloc.h b/WickedEngine/PS5/malloc.h deleted file mode 100644 index e69de29bb..000000000 diff --git a/WickedEngine/PS5/ps5.h b/WickedEngine/PS5/ps5.h deleted file mode 100644 index 7269652c9..000000000 --- a/WickedEngine/PS5/ps5.h +++ /dev/null @@ -1,13 +0,0 @@ -#ifndef PS5_H -#define PS5_H - -#define NULL 0 -#define dirname(x) nullptr -#define basename(x) nullptr -#define ftello(x) ftell(x) -#define tmpfile() 0 -#define getenv(a) 0 -#define L_tmpnam 260 // _MAX_PATH -#define tmpnam(x) 0 - -#endif // PS5_H diff --git a/WickedEngine/PS5/readme.txt b/WickedEngine/PS5/readme.txt deleted file mode 100644 index ef95cedaa..000000000 --- a/WickedEngine/PS5/readme.txt +++ /dev/null @@ -1 +0,0 @@ -This folder contains dummy files and definitions to assist building on PlayStation 5 platform. Add this directory to the include directories, and add ps5.h to the forced include files. \ No newline at end of file diff --git a/WickedEngine/PS5/signal.h b/WickedEngine/PS5/signal.h deleted file mode 100644 index 7df1f5bea..000000000 --- a/WickedEngine/PS5/signal.h +++ /dev/null @@ -1,9 +0,0 @@ -#ifndef SIGNAL_H -#define SIGNAL_H - -typedef int sig_atomic_t; -#define signal(x,y) -#define SIG_DFL 0 -#define SIGINT 0 - -#endif // SIGNAL_H diff --git a/WickedEngine/PS5/sys/timex.h b/WickedEngine/PS5/sys/timex.h deleted file mode 100644 index e69de29bb..000000000 diff --git a/WickedEngine/Utility/CMakeLists.txt b/WickedEngine/Utility/CMakeLists.txt index f06807245..fbe927c39 100644 --- a/WickedEngine/Utility/CMakeLists.txt +++ b/WickedEngine/Utility/CMakeLists.txt @@ -31,8 +31,6 @@ install(FILES ${HEADER_FILES} # compiled on their own; hence we mark them as header files file(GLOB_RECURSE DIRECTLY_INCLUDED_FILES CONFIGURE_DEPENDS # included by utility_common.cpp - basis_universal/*.cpp - basis_universal/*.c mikktspace.c # included by volk.h diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_backend.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_backend.cpp deleted file mode 100644 index abb61750a..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_backend.cpp +++ /dev/null @@ -1,1778 +0,0 @@ -// basisu_backend.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// TODO: This code originally supported full ETC1 and ETC1S, so there's some legacy stuff in here. -// -#include "basisu_backend.h" - -#if BASISU_SUPPORT_SSE -#define CPPSPMD_NAME(a) a##_sse41 -#include "basisu_kernels_declares.h" -#endif - -#define BASISU_FASTER_SELECTOR_REORDERING 0 -#define BASISU_BACKEND_VERIFY(c) verify(c, __LINE__); - -namespace basisu -{ - // TODO - static inline void verify(bool condition, int line) - { - if (!condition) - { - fprintf(stderr, "ERROR: basisu_backend: verify() failed at line %i!\n", line); - abort(); - } - } - - basisu_backend::basisu_backend() - { - clear(); - } - - void basisu_backend::clear() - { - m_pFront_end = NULL; - m_params.clear(); - m_output.clear(); - } - - void basisu_backend::init(basisu_frontend* pFront_end, basisu_backend_params& params, const basisu_backend_slice_desc_vec& slice_descs) - { - m_pFront_end = pFront_end; - m_params = params; - m_slices = slice_descs; - - debug_printf("basisu_backend::Init: Slices: %u, ETC1S: %u, EndpointRDOQualityThresh: %f, SelectorRDOQualityThresh: %f\n", - m_slices.size(), - params.m_etc1s, - params.m_endpoint_rdo_quality_thresh, - params.m_selector_rdo_quality_thresh); - - debug_printf("Frontend endpoints: %u selectors: %u\n", m_pFront_end->get_total_endpoint_clusters(), m_pFront_end->get_total_selector_clusters()); - - for (uint32_t i = 0; i < m_slices.size(); i++) - { - debug_printf("Slice: %u, OrigWidth: %u, OrigHeight: %u, Width: %u, Height: %u, NumBlocksX: %u, NumBlocksY: %u, FirstBlockIndex: %u\n", - i, - m_slices[i].m_orig_width, m_slices[i].m_orig_height, - m_slices[i].m_width, m_slices[i].m_height, - m_slices[i].m_num_blocks_x, m_slices[i].m_num_blocks_y, - m_slices[i].m_first_block_index); - } - } - - void basisu_backend::create_endpoint_palette() - { - const basisu_frontend& r = *m_pFront_end; - - m_output.m_num_endpoints = r.get_total_endpoint_clusters(); - - m_endpoint_palette.resize(r.get_total_endpoint_clusters()); - for (uint32_t i = 0; i < r.get_total_endpoint_clusters(); i++) - { - etc1_endpoint_palette_entry& e = m_endpoint_palette[i]; - - e.m_color5_valid = r.get_endpoint_cluster_color_is_used(i, false); - e.m_color5 = r.get_endpoint_cluster_unscaled_color(i, false); - e.m_inten5 = r.get_endpoint_cluster_inten_table(i, false); - - BASISU_BACKEND_VERIFY(e.m_color5_valid); - } - } - - void basisu_backend::create_selector_palette() - { - const basisu_frontend& r = *m_pFront_end; - - m_output.m_num_selectors = r.get_total_selector_clusters(); - - m_selector_palette.resize(r.get_total_selector_clusters()); - - for (uint32_t i = 0; i < r.get_total_selector_clusters(); i++) - { - etc1_selector_palette_entry& s = m_selector_palette[i]; - - const etc_block& selector_bits = r.get_selector_cluster_selector_bits(i); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - s[y * 4 + x] = static_cast(selector_bits.get_selector(x, y)); - } - } - } - } - - static const struct - { - int8_t m_dx, m_dy; - } g_endpoint_preds[] = - { - { -1, 0 }, - { 0, -1 }, - { -1, -1 } - }; - - void basisu_backend::reoptimize_and_sort_endpoints_codebook(uint32_t total_block_endpoints_remapped, uint_vec& all_endpoint_indices) - { - basisu_frontend& r = *m_pFront_end; - //const bool is_video = r.get_params().m_tex_type == basist::cBASISTexTypeVideoFrames; - - if (m_params.m_used_global_codebooks) - { - m_endpoint_remap_table_old_to_new.clear(); - m_endpoint_remap_table_old_to_new.resize(r.get_total_endpoint_clusters()); - for (uint32_t i = 0; i < r.get_total_endpoint_clusters(); i++) - m_endpoint_remap_table_old_to_new[i] = i; - } - else - { - //if ((total_block_endpoints_remapped) && (m_params.m_compression_level > 0)) - if ((total_block_endpoints_remapped) && (m_params.m_compression_level > 1)) - { - // We've changed the block endpoint indices, so we need to go and adjust the endpoint codebook (remove unused entries, optimize existing entries that have changed) - uint_vec new_block_endpoints(get_total_blocks()); - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - const uint32_t first_block_index = m_slices[slice_index].m_first_block_index; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - new_block_endpoints[first_block_index + block_x + block_y * num_blocks_x] = m_slice_encoder_blocks[slice_index](block_x, block_y).m_endpoint_index; - } - - int_vec old_to_new_endpoint_indices; - r.reoptimize_remapped_endpoints(new_block_endpoints, old_to_new_endpoint_indices, true); - - create_endpoint_palette(); - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - //const uint32_t first_block_index = m_slices[slice_index].m_first_block_index; - - //const uint32_t width = m_slices[slice_index].m_width; - //const uint32_t height = m_slices[slice_index].m_height; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - //const uint32_t block_index = first_block_index + block_x + block_y * num_blocks_x; - - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - m.m_endpoint_index = old_to_new_endpoint_indices[m.m_endpoint_index]; - } // block_x - } // block_y - } // slice_index - - for (uint32_t i = 0; i < all_endpoint_indices.size(); i++) - all_endpoint_indices[i] = old_to_new_endpoint_indices[all_endpoint_indices[i]]; - - } //if (total_block_endpoints_remapped) - - // Sort endpoint codebook - palette_index_reorderer reorderer; - reorderer.init((uint32_t)all_endpoint_indices.size(), &all_endpoint_indices[0], r.get_total_endpoint_clusters(), nullptr, nullptr, 0); - m_endpoint_remap_table_old_to_new = reorderer.get_remap_table(); - } - - // For endpoints, old_to_new[] may not be bijective! - // Some "old" entries may be unused and don't get remapped into the "new" array. - - m_old_endpoint_was_used.clear(); - m_old_endpoint_was_used.resize(r.get_total_endpoint_clusters()); - uint32_t first_old_entry_index = UINT32_MAX; - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x, num_blocks_y = m_slices[slice_index].m_num_blocks_y; - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - const uint32_t old_endpoint_index = m.m_endpoint_index; - - m_old_endpoint_was_used[old_endpoint_index] = true; - first_old_entry_index = basisu::minimum(first_old_entry_index, old_endpoint_index); - } // block_x - } // block_y - } // slice_index - - debug_printf("basisu_backend::reoptimize_and_sort_endpoints_codebook: First old entry index: %u\n", first_old_entry_index); - - m_new_endpoint_was_used.clear(); - m_new_endpoint_was_used.resize(r.get_total_endpoint_clusters()); - - m_endpoint_remap_table_new_to_old.clear(); - m_endpoint_remap_table_new_to_old.resize(r.get_total_endpoint_clusters()); - - // Set unused entries in the new array to point to the first used entry in the old array. - m_endpoint_remap_table_new_to_old.set_all(first_old_entry_index); - - for (uint32_t old_index = 0; old_index < m_endpoint_remap_table_old_to_new.size(); old_index++) - { - if (m_old_endpoint_was_used[old_index]) - { - const uint32_t new_index = m_endpoint_remap_table_old_to_new[old_index]; - - m_new_endpoint_was_used[new_index] = true; - - m_endpoint_remap_table_new_to_old[new_index] = old_index; - } - } - } - - void basisu_backend::sort_selector_codebook() - { - basisu_frontend& r = *m_pFront_end; - - m_selector_remap_table_new_to_old.resize(r.get_total_selector_clusters()); - - if ((m_params.m_compression_level == 0) || (m_params.m_used_global_codebooks)) - { - for (uint32_t i = 0; i < r.get_total_selector_clusters(); i++) - m_selector_remap_table_new_to_old[i] = i; - } - else - { - m_selector_remap_table_new_to_old[0] = 0; - uint32_t prev_selector_index = 0; - - int_vec remaining_selectors; - remaining_selectors.reserve(r.get_total_selector_clusters() - 1); - for (uint32_t i = 1; i < r.get_total_selector_clusters(); i++) - remaining_selectors.push_back(i); - - uint_vec selector_palette_bytes(m_selector_palette.size()); - for (uint32_t i = 0; i < m_selector_palette.size(); i++) - selector_palette_bytes[i] = m_selector_palette[i].get_byte(0) | (m_selector_palette[i].get_byte(1) << 8) | (m_selector_palette[i].get_byte(2) << 16) | (m_selector_palette[i].get_byte(3) << 24); - - // This is the traveling salesman problem. - for (uint32_t i = 1; i < r.get_total_selector_clusters(); i++) - { - uint32_t best_hamming_dist = 100; - uint32_t best_index = 0; - -#if BASISU_FASTER_SELECTOR_REORDERING - const uint32_t step = (remaining_selectors.size() > 16) ? 16 : 1; - for (uint32_t j = 0; j < remaining_selectors.size(); j += step) -#else - for (uint32_t j = 0; j < remaining_selectors.size(); j++) -#endif - { - int selector_index = remaining_selectors[j]; - - uint32_t k = selector_palette_bytes[prev_selector_index] ^ selector_palette_bytes[selector_index]; - uint32_t hamming_dist = g_hamming_dist[k & 0xFF] + g_hamming_dist[(k >> 8) & 0xFF] + g_hamming_dist[(k >> 16) & 0xFF] + g_hamming_dist[k >> 24]; - - if (hamming_dist < best_hamming_dist) - { - best_hamming_dist = hamming_dist; - best_index = j; - if (best_hamming_dist <= 1) - break; - } - } - - prev_selector_index = remaining_selectors[best_index]; - m_selector_remap_table_new_to_old[i] = prev_selector_index; - - remaining_selectors[best_index] = remaining_selectors.back(); - remaining_selectors.resize(remaining_selectors.size() - 1); - } - } - - m_selector_remap_table_old_to_new.resize(r.get_total_selector_clusters()); - for (uint32_t i = 0; i < m_selector_remap_table_new_to_old.size(); i++) - m_selector_remap_table_old_to_new[m_selector_remap_table_new_to_old[i]] = i; - } - int basisu_backend::find_video_frame(int slice_index, int delta) - { - for (uint32_t s = 0; s < m_slices.size(); s++) - { - if ((int)m_slices[s].m_source_file_index != ((int)m_slices[slice_index].m_source_file_index + delta)) - continue; - if (m_slices[s].m_mip_index != m_slices[slice_index].m_mip_index) - continue; - - // Being super paranoid here. - if (m_slices[s].m_num_blocks_x != (m_slices[slice_index].m_num_blocks_x)) - continue; - if (m_slices[s].m_num_blocks_y != (m_slices[slice_index].m_num_blocks_y)) - continue; - if (m_slices[s].m_alpha != (m_slices[slice_index].m_alpha)) - continue; - return s; - } - - return -1; - } - - void basisu_backend::check_for_valid_cr_blocks() - { - basisu_frontend& r = *m_pFront_end; - const bool is_video = r.get_params().m_tex_type == basist::cBASISTexTypeVideoFrames; - - if (!is_video) - return; - - debug_printf("basisu_backend::check_for_valid_cr_blocks\n"); - - uint32_t total_crs = 0; - uint32_t total_invalid_crs = 0; - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - const bool is_iframe = m_slices[slice_index].m_iframe; - //const uint32_t first_block_index = m_slices[slice_index].m_first_block_index; - - //const uint32_t width = m_slices[slice_index].m_width; - //const uint32_t height = m_slices[slice_index].m_height; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - const int prev_frame_slice_index = find_video_frame(slice_index, -1); - - // If we don't have a previous frame, and we're not an i-frame, something is wrong. - if ((prev_frame_slice_index < 0) && (!is_iframe)) - { - BASISU_BACKEND_VERIFY(0); - } - - if ((is_iframe) || (prev_frame_slice_index < 0)) - { - // Ensure no blocks use CR's - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - BASISU_BACKEND_VERIFY(m.m_endpoint_predictor != basist::CR_ENDPOINT_PRED_INDEX); - } - } - } - else - { - // For blocks that use CR's, make sure the endpoints/selectors haven't really changed. - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - if (m.m_endpoint_predictor == basist::CR_ENDPOINT_PRED_INDEX) - { - total_crs++; - - encoder_block& prev_m = m_slice_encoder_blocks[prev_frame_slice_index](block_x, block_y); - - if ((m.m_endpoint_index != prev_m.m_endpoint_index) || (m.m_selector_index != prev_m.m_selector_index)) - { - total_invalid_crs++; - } - } - } // block_x - } // block_y - - } // !slice_index - - } // slice_index - - debug_printf("Total CR's: %u, Total invalid CR's: %u\n", total_crs, total_invalid_crs); - - BASISU_BACKEND_VERIFY(total_invalid_crs == 0); - } - - void basisu_backend::create_encoder_blocks() - { - debug_printf("basisu_backend::create_encoder_blocks\n"); - - interval_timer tm; - tm.start(); - - basisu_frontend& r = *m_pFront_end; - const bool is_video = r.get_params().m_tex_type == basist::cBASISTexTypeVideoFrames; - - m_slice_encoder_blocks.resize(m_slices.size()); - - uint32_t total_endpoint_pred_missed = 0, total_endpoint_pred_hits = 0, total_block_endpoints_remapped = 0; - - uint_vec all_endpoint_indices; - all_endpoint_indices.reserve(get_total_blocks()); - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - const int prev_frame_slice_index = is_video ? find_video_frame(slice_index, -1) : -1; - const bool is_iframe = m_slices[slice_index].m_iframe; - const uint32_t first_block_index = m_slices[slice_index].m_first_block_index; - - //const uint32_t width = m_slices[slice_index].m_width; - //const uint32_t height = m_slices[slice_index].m_height; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - - m_slice_encoder_blocks[slice_index].resize(num_blocks_x, num_blocks_y); - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - const uint32_t block_index = first_block_index + block_x + block_y * num_blocks_x; - - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - m.m_endpoint_index = r.get_subblock_endpoint_cluster_index(block_index, 0); - BASISU_BACKEND_VERIFY(r.get_subblock_endpoint_cluster_index(block_index, 0) == r.get_subblock_endpoint_cluster_index(block_index, 1)); - - m.m_selector_index = r.get_block_selector_cluster_index(block_index); - - m.m_endpoint_predictor = basist::NO_ENDPOINT_PRED_INDEX; - - const uint32_t block_endpoint = m.m_endpoint_index; - - uint32_t best_endpoint_pred = UINT32_MAX; - - for (uint32_t endpoint_pred = 0; endpoint_pred < basist::NUM_ENDPOINT_PREDS; endpoint_pred++) - { - if ((is_video) && (endpoint_pred == basist::CR_ENDPOINT_PRED_INDEX)) - { - if ((prev_frame_slice_index != -1) && (!is_iframe)) - { - const uint32_t cur_endpoint = m_slice_encoder_blocks[slice_index](block_x, block_y).m_endpoint_index; - const uint32_t cur_selector = m_slice_encoder_blocks[slice_index](block_x, block_y).m_selector_index; - const uint32_t prev_endpoint = m_slice_encoder_blocks[prev_frame_slice_index](block_x, block_y).m_endpoint_index; - const uint32_t prev_selector = m_slice_encoder_blocks[prev_frame_slice_index](block_x, block_y).m_selector_index; - if ((cur_endpoint == prev_endpoint) && (cur_selector == prev_selector)) - { - best_endpoint_pred = basist::CR_ENDPOINT_PRED_INDEX; - m_slice_encoder_blocks[prev_frame_slice_index](block_x, block_y).m_is_cr_target = true; - } - } - } - else - { - int pred_block_x = block_x + g_endpoint_preds[endpoint_pred].m_dx; - if ((pred_block_x < 0) || (pred_block_x >= (int)num_blocks_x)) - continue; - - int pred_block_y = block_y + g_endpoint_preds[endpoint_pred].m_dy; - if ((pred_block_y < 0) || (pred_block_y >= (int)num_blocks_y)) - continue; - - uint32_t pred_endpoint = m_slice_encoder_blocks[slice_index](pred_block_x, pred_block_y).m_endpoint_index; - - if (pred_endpoint == block_endpoint) - { - if (endpoint_pred < best_endpoint_pred) - { - best_endpoint_pred = endpoint_pred; - } - } - } - - } // endpoint_pred - - if (best_endpoint_pred != UINT32_MAX) - { - m.m_endpoint_predictor = best_endpoint_pred; - - total_endpoint_pred_hits++; - } - else if (m_params.m_endpoint_rdo_quality_thresh > 0.0f) - { - const pixel_block& src_pixels = r.get_source_pixel_block(block_index); - - etc_block etc_blk(r.get_output_block(block_index)); - - uint64_t cur_err = etc_blk.evaluate_etc1_error(src_pixels.get_ptr(), r.get_params().m_perceptual); - - if (cur_err) - { - const uint64_t thresh_err = (uint64_t)(cur_err * maximum(1.0f, m_params.m_endpoint_rdo_quality_thresh)); - - etc_block trial_etc_block(etc_blk); - - uint64_t best_err = UINT64_MAX; - uint32_t best_endpoint_index = 0; - - best_endpoint_pred = UINT32_MAX; - - for (uint32_t endpoint_pred = 0; endpoint_pred < basist::NUM_ENDPOINT_PREDS; endpoint_pred++) - { - if ((is_video) && (endpoint_pred == basist::CR_ENDPOINT_PRED_INDEX)) - continue; - - int pred_block_x = block_x + g_endpoint_preds[endpoint_pred].m_dx; - if ((pred_block_x < 0) || (pred_block_x >= (int)num_blocks_x)) - continue; - - int pred_block_y = block_y + g_endpoint_preds[endpoint_pred].m_dy; - if ((pred_block_y < 0) || (pred_block_y >= (int)num_blocks_y)) - continue; - - uint32_t pred_endpoint_index = m_slice_encoder_blocks[slice_index](pred_block_x, pred_block_y).m_endpoint_index; - - uint32_t pred_inten = r.get_endpoint_cluster_inten_table(pred_endpoint_index, false); - color_rgba pred_color = r.get_endpoint_cluster_unscaled_color(pred_endpoint_index, false); - - trial_etc_block.set_block_color5(pred_color, pred_color); - trial_etc_block.set_inten_table(0, pred_inten); - trial_etc_block.set_inten_table(1, pred_inten); - - color_rgba trial_colors[16]; - unpack_etc1(trial_etc_block, trial_colors); - - uint64_t trial_err = 0; - if (r.get_params().m_perceptual) - { - for (uint32_t p = 0; p < 16; p++) - { - trial_err += color_distance(true, src_pixels.get_ptr()[p], trial_colors[p], false); - if (trial_err > thresh_err) - break; - } - } - else - { - for (uint32_t p = 0; p < 16; p++) - { - trial_err += color_distance(false, src_pixels.get_ptr()[p], trial_colors[p], false); - if (trial_err > thresh_err) - break; - } - } - - if (trial_err <= thresh_err) - { - if ((trial_err < best_err) || ((trial_err == best_err) && (endpoint_pred < best_endpoint_pred))) - { - best_endpoint_pred = endpoint_pred; - best_err = trial_err; - best_endpoint_index = pred_endpoint_index; - } - } - } // endpoint_pred - - if (best_endpoint_pred != UINT32_MAX) - { - m.m_endpoint_index = best_endpoint_index; - m.m_endpoint_predictor = best_endpoint_pred; - - total_endpoint_pred_hits++; - total_block_endpoints_remapped++; - } - else - { - total_endpoint_pred_missed++; - } - } - } - else - { - total_endpoint_pred_missed++; - } - - if (m.m_endpoint_predictor == basist::NO_ENDPOINT_PRED_INDEX) - { - all_endpoint_indices.push_back(m.m_endpoint_index); - } - - } // block_x - - } // block_y - - } // slice - - debug_printf("total_endpoint_pred_missed: %u (%3.2f%%) total_endpoint_pred_hit: %u (%3.2f%%), total_block_endpoints_remapped: %u (%3.2f%%)\n", - total_endpoint_pred_missed, total_endpoint_pred_missed * 100.0f / get_total_blocks(), - total_endpoint_pred_hits, total_endpoint_pred_hits * 100.0f / get_total_blocks(), - total_block_endpoints_remapped, total_block_endpoints_remapped * 100.0f / get_total_blocks()); - - reoptimize_and_sort_endpoints_codebook(total_block_endpoints_remapped, all_endpoint_indices); - - sort_selector_codebook(); - check_for_valid_cr_blocks(); - - debug_printf("Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - } - - void basisu_backend::compute_slice_crcs() - { - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - //const uint32_t first_block_index = m_slices[slice_index].m_first_block_index; - const uint32_t width = m_slices[slice_index].m_width; - const uint32_t height = m_slices[slice_index].m_height; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - - gpu_image gi; - gi.init(texture_format::cETC1, width, height); - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - //const uint32_t block_index = first_block_index + block_x + block_y * num_blocks_x; - - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - { - etc_block& output_block = *(etc_block*)gi.get_block_ptr(block_x, block_y); - - output_block.set_diff_bit(true); - // Setting the flip bit to false to be compatible with the Khronos KDFS. - //output_block.set_flip_bit(true); - output_block.set_flip_bit(false); - - const uint32_t endpoint_index = m.m_endpoint_index; - - output_block.set_block_color5_etc1s(m_endpoint_palette[endpoint_index].m_color5); - output_block.set_inten_tables_etc1s(m_endpoint_palette[endpoint_index].m_inten5); - - const uint32_t selector_idx = m.m_selector_index; - - const etc1_selector_palette_entry& selectors = m_selector_palette[selector_idx]; - for (uint32_t sy = 0; sy < 4; sy++) - for (uint32_t sx = 0; sx < 4; sx++) - output_block.set_selector(sx, sy, selectors(sx, sy)); - } - - } // block_x - } // block_y - - m_output.m_slice_image_crcs[slice_index] = basist::crc16(gi.get_ptr(), gi.get_size_in_bytes(), 0); - - if (m_params.m_debug_images) - { - image gi_unpacked; - gi.unpack(gi_unpacked); - - char buf[256]; -#ifdef _WIN32 - sprintf_s(buf, sizeof(buf), "basisu_backend_slice_%u.png", slice_index); -#else - snprintf(buf, sizeof(buf), "basisu_backend_slice_%u.png", slice_index); -#endif - save_png(buf, gi_unpacked); - } - - } // slice_index - } - - //uint32_t g_color_delta_hist[255 * 3 + 1]; - //uint32_t g_color_delta_bad_hist[255 * 3 + 1]; - - // TODO: Split this into multiple methods. - bool basisu_backend::encode_image() - { - basisu_frontend& r = *m_pFront_end; - const bool is_video = r.get_params().m_tex_type == basist::cBASISTexTypeVideoFrames; - - uint32_t total_used_selector_history_buf = 0; - uint32_t total_selector_indices_remapped = 0; - - basist::approx_move_to_front selector_history_buf(basist::MAX_SELECTOR_HISTORY_BUF_SIZE); - histogram selector_history_buf_histogram(basist::MAX_SELECTOR_HISTORY_BUF_SIZE); - histogram selector_histogram(r.get_total_selector_clusters() + basist::MAX_SELECTOR_HISTORY_BUF_SIZE + 1); - histogram selector_history_buf_rle_histogram(1 << basist::SELECTOR_HISTORY_BUF_RLE_COUNT_BITS); - - basisu::vector selector_syms(m_slices.size()); - - const uint32_t SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX = r.get_total_selector_clusters(); - const uint32_t SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX = SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX + basist::MAX_SELECTOR_HISTORY_BUF_SIZE; - - m_output.m_slice_image_crcs.resize(m_slices.size()); - - histogram delta_endpoint_histogram(r.get_total_endpoint_clusters()); - - histogram endpoint_pred_histogram(basist::ENDPOINT_PRED_TOTAL_SYMBOLS); - basisu::vector endpoint_pred_syms(m_slices.size()); - - uint32_t total_endpoint_indices_remapped = 0; - - uint_vec block_endpoint_indices, block_selector_indices; - - interval_timer tm; - tm.start(); - - const int COLOR_DELTA_THRESH = 8; - const int SEL_DIFF_THRESHOLD = 11; - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - //const int prev_frame_slice_index = is_video ? find_video_frame(slice_index, -1) : -1; - //const int next_frame_slice_index = is_video ? find_video_frame(slice_index, 1) : -1; - const uint32_t first_block_index = m_slices[slice_index].m_first_block_index; - //const uint32_t width = m_slices[slice_index].m_width; - //const uint32_t height = m_slices[slice_index].m_height; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - - selector_history_buf.reset(); - - int selector_history_buf_rle_count = 0; - - int prev_endpoint_pred_sym_bits = -1, endpoint_pred_repeat_count = 0; - - uint32_t prev_endpoint_index = 0; - - vector2D block_endpoints_are_referenced(num_blocks_x, num_blocks_y); - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - //const uint32_t block_index = first_block_index + block_x + block_y * num_blocks_x; - - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - if (m.m_endpoint_predictor == 0) - block_endpoints_are_referenced(block_x - 1, block_y) = true; - else if (m.m_endpoint_predictor == 1) - block_endpoints_are_referenced(block_x, block_y - 1) = true; - else if (m.m_endpoint_predictor == 2) - { - if (!is_video) - block_endpoints_are_referenced(block_x - 1, block_y - 1) = true; - } - if (is_video) - { - if (m.m_is_cr_target) - block_endpoints_are_referenced(block_x, block_y) = true; - } - - } // block_x - } // block_y - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - const uint32_t block_index = first_block_index + block_x + block_y * num_blocks_x; - - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - if (((block_x & 1) == 0) && ((block_y & 1) == 0)) - { - uint32_t endpoint_pred_cur_sym_bits = 0; - - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - const uint32_t bx = block_x + x; - const uint32_t by = block_y + y; - - uint32_t pred = basist::NO_ENDPOINT_PRED_INDEX; - if ((bx < num_blocks_x) && (by < num_blocks_y)) - pred = m_slice_encoder_blocks[slice_index](bx, by).m_endpoint_predictor; - - endpoint_pred_cur_sym_bits |= (pred << (x * 2 + y * 4)); - } - } - - if ((int)endpoint_pred_cur_sym_bits == prev_endpoint_pred_sym_bits) - { - endpoint_pred_repeat_count++; - } - else - { - if (endpoint_pred_repeat_count > 0) - { - if (endpoint_pred_repeat_count > (int)basist::ENDPOINT_PRED_MIN_REPEAT_COUNT) - { - endpoint_pred_histogram.inc(basist::ENDPOINT_PRED_REPEAT_LAST_SYMBOL); - endpoint_pred_syms[slice_index].push_back(basist::ENDPOINT_PRED_REPEAT_LAST_SYMBOL); - - endpoint_pred_syms[slice_index].push_back(endpoint_pred_repeat_count); - } - else - { - for (int j = 0; j < endpoint_pred_repeat_count; j++) - { - endpoint_pred_histogram.inc(prev_endpoint_pred_sym_bits); - endpoint_pred_syms[slice_index].push_back(prev_endpoint_pred_sym_bits); - } - } - - endpoint_pred_repeat_count = 0; - } - - endpoint_pred_histogram.inc(endpoint_pred_cur_sym_bits); - endpoint_pred_syms[slice_index].push_back(endpoint_pred_cur_sym_bits); - - prev_endpoint_pred_sym_bits = endpoint_pred_cur_sym_bits; - } - } - - int new_endpoint_index = m_endpoint_remap_table_old_to_new[m.m_endpoint_index]; - - if (m.m_endpoint_predictor == basist::NO_ENDPOINT_PRED_INDEX) - { - int endpoint_delta = new_endpoint_index - prev_endpoint_index; - - if ((m_params.m_endpoint_rdo_quality_thresh > 1.0f) && (iabs(endpoint_delta) > 1) && (!block_endpoints_are_referenced(block_x, block_y))) - { - const pixel_block& src_pixels = r.get_source_pixel_block(block_index); - - etc_block etc_blk(r.get_output_block(block_index)); - - const uint64_t cur_err = etc_blk.evaluate_etc1_error(src_pixels.get_ptr(), r.get_params().m_perceptual); - const uint32_t cur_inten5 = etc_blk.get_inten_table(0); - - const etc1_endpoint_palette_entry& cur_endpoints = m_endpoint_palette[m.m_endpoint_index]; - - if (cur_err) - { - const float endpoint_remap_thresh = maximum(1.0f, m_params.m_endpoint_rdo_quality_thresh); - const uint64_t thresh_err = (uint64_t)(cur_err * endpoint_remap_thresh); - - //const int MAX_ENDPOINT_SEARCH_DIST = (m_params.m_compression_level >= 2) ? 64 : 32; - const int MAX_ENDPOINT_SEARCH_DIST = (m_params.m_compression_level >= 2) ? 64 : 16; - - if (!g_cpu_supports_sse41) - { - const uint64_t initial_best_trial_err = UINT64_MAX; - uint64_t best_trial_err = initial_best_trial_err; - int best_trial_idx = 0; - - etc_block trial_etc_blk(etc_blk); - - const int search_dist = minimum(iabs(endpoint_delta) - 1, MAX_ENDPOINT_SEARCH_DIST); - for (int d = -search_dist; d < search_dist; d++) - { - int trial_idx = prev_endpoint_index + d; - if (trial_idx < 0) - trial_idx += (int)r.get_total_endpoint_clusters(); - else if (trial_idx >= (int)r.get_total_endpoint_clusters()) - trial_idx -= (int)r.get_total_endpoint_clusters(); - - if (trial_idx == new_endpoint_index) - continue; - - // Skip it if this new endpoint palette entry is actually never used. - if (!m_new_endpoint_was_used[trial_idx]) - continue; - - const etc1_endpoint_palette_entry& p = m_endpoint_palette[m_endpoint_remap_table_new_to_old[trial_idx]]; - - if (m_params.m_compression_level <= 1) - { - if (p.m_inten5 > cur_inten5) - continue; - - int delta_r = iabs(cur_endpoints.m_color5.r - p.m_color5.r); - int delta_g = iabs(cur_endpoints.m_color5.g - p.m_color5.g); - int delta_b = iabs(cur_endpoints.m_color5.b - p.m_color5.b); - int color_delta = delta_r + delta_g + delta_b; - - if (color_delta > COLOR_DELTA_THRESH) - continue; - } - - trial_etc_blk.set_block_color5_etc1s(p.m_color5); - trial_etc_blk.set_inten_tables_etc1s(p.m_inten5); - - uint64_t trial_err = trial_etc_blk.evaluate_etc1_error(src_pixels.get_ptr(), r.get_params().m_perceptual); - - if ((trial_err < best_trial_err) && (trial_err <= thresh_err)) - { - best_trial_err = trial_err; - best_trial_idx = trial_idx; - } - } - - if (best_trial_err != initial_best_trial_err) - { - m.m_endpoint_index = m_endpoint_remap_table_new_to_old[best_trial_idx]; - - new_endpoint_index = best_trial_idx; - - endpoint_delta = new_endpoint_index - prev_endpoint_index; - - total_endpoint_indices_remapped++; - } - } - else - { -#if BASISU_SUPPORT_SSE - uint8_t block_selectors[16]; - for (uint32_t i = 0; i < 16; i++) - block_selectors[i] = (uint8_t)etc_blk.get_selector(i & 3, i >> 2); - - const int64_t initial_best_trial_err = INT64_MAX; - int64_t best_trial_err = initial_best_trial_err; - int best_trial_idx = 0; - - const int search_dist = minimum(iabs(endpoint_delta) - 1, MAX_ENDPOINT_SEARCH_DIST); - for (int d = -search_dist; d < search_dist; d++) - { - int trial_idx = prev_endpoint_index + d; - if (trial_idx < 0) - trial_idx += (int)r.get_total_endpoint_clusters(); - else if (trial_idx >= (int)r.get_total_endpoint_clusters()) - trial_idx -= (int)r.get_total_endpoint_clusters(); - - if (trial_idx == new_endpoint_index) - continue; - - // Skip it if this new endpoint palette entry is actually never used. - if (!m_new_endpoint_was_used[trial_idx]) - continue; - - const etc1_endpoint_palette_entry& p = m_endpoint_palette[m_endpoint_remap_table_new_to_old[trial_idx]]; - - if (m_params.m_compression_level <= 1) - { - if (p.m_inten5 > cur_inten5) - continue; - - int delta_r = iabs(cur_endpoints.m_color5.r - p.m_color5.r); - int delta_g = iabs(cur_endpoints.m_color5.g - p.m_color5.g); - int delta_b = iabs(cur_endpoints.m_color5.b - p.m_color5.b); - int color_delta = delta_r + delta_g + delta_b; - - if (color_delta > COLOR_DELTA_THRESH) - continue; - } - - color_rgba block_colors[4]; - etc_block::get_block_colors_etc1s(block_colors, p.m_color5, p.m_inten5); - - int64_t trial_err; - if (r.get_params().m_perceptual) - { - perceptual_distance_rgb_4_N_sse41(&trial_err, block_selectors, block_colors, src_pixels.get_ptr(), 16, best_trial_err); - } - else - { - linear_distance_rgb_4_N_sse41(&trial_err, block_selectors, block_colors, src_pixels.get_ptr(), 16, best_trial_err); - } - - //if (trial_err > thresh_err) - // g_color_delta_bad_hist[color_delta]++; - - if ((trial_err < best_trial_err) && (trial_err <= (int64_t)thresh_err)) - { - best_trial_err = trial_err; - best_trial_idx = trial_idx; - } - } - - if (best_trial_err != initial_best_trial_err) - { - m.m_endpoint_index = m_endpoint_remap_table_new_to_old[best_trial_idx]; - - new_endpoint_index = best_trial_idx; - - endpoint_delta = new_endpoint_index - prev_endpoint_index; - - total_endpoint_indices_remapped++; - } -#endif // BASISU_SUPPORT_SSE - } // if (!g_cpu_supports_sse41) - - } // if (cur_err) - - } // if ((m_params.m_endpoint_rdo_quality_thresh > 1.0f) && (iabs(endpoint_delta) > 1) && (!block_endpoints_are_referenced(block_x, block_y))) - - if (endpoint_delta < 0) - endpoint_delta += (int)r.get_total_endpoint_clusters(); - - delta_endpoint_histogram.inc(endpoint_delta); - - } // if (m.m_endpoint_predictor == basist::NO_ENDPOINT_PRED_INDEX) - - block_endpoint_indices.push_back(m_endpoint_remap_table_new_to_old[new_endpoint_index]); - - prev_endpoint_index = new_endpoint_index; - - if ((!is_video) || (m.m_endpoint_predictor != basist::CR_ENDPOINT_PRED_INDEX)) - { - int new_selector_index = m_selector_remap_table_old_to_new[m.m_selector_index]; - - const float selector_remap_thresh = maximum(1.0f, m_params.m_selector_rdo_quality_thresh); //2.5f; - - int selector_history_buf_index = -1; - - // At low comp levels this hurts compression a tiny amount, but is significantly faster so it's a good tradeoff. - if ((m.m_is_cr_target) || (m_params.m_compression_level <= 1)) - { - for (uint32_t j = 0; j < selector_history_buf.size(); j++) - { - const int trial_idx = selector_history_buf[j]; - if (trial_idx == new_selector_index) - { - total_used_selector_history_buf++; - selector_history_buf_index = j; - selector_history_buf_histogram.inc(j); - break; - } - } - } - - // If the block is a CR target we can't override its selectors. - if ((!m.m_is_cr_target) && (selector_history_buf_index == -1)) - { - const pixel_block& src_pixels = r.get_source_pixel_block(block_index); - - etc_block etc_blk = r.get_output_block(block_index); - - // This is new code - the initial release just used the endpoints from the frontend, which isn't correct/accurate. - const etc1_endpoint_palette_entry& q = m_endpoint_palette[m_endpoint_remap_table_new_to_old[new_endpoint_index]]; - etc_blk.set_block_color5_etc1s(q.m_color5); - etc_blk.set_inten_tables_etc1s(q.m_inten5); - - color_rgba block_colors[4]; - etc_blk.get_block_colors(block_colors, 0); - - const uint8_t* pCur_selectors = &m_selector_palette[m.m_selector_index][0]; - - uint64_t cur_err = 0; - if (r.get_params().m_perceptual) - { - for (uint32_t p = 0; p < 16; p++) - cur_err += color_distance(true, src_pixels.get_ptr()[p], block_colors[pCur_selectors[p]], false); - } - else - { - for (uint32_t p = 0; p < 16; p++) - cur_err += color_distance(false, src_pixels.get_ptr()[p], block_colors[pCur_selectors[p]], false); - } - - const uint64_t limit_err = (uint64_t)ceilf(cur_err * selector_remap_thresh); - - // Even if cur_err==limit_err, we still want to scan the history buffer because there may be equivalent entries that are cheaper to code. - - uint64_t best_trial_err = UINT64_MAX; - int best_trial_idx = 0; - uint32_t best_trial_history_buf_idx = 0; - - for (uint32_t j = 0; j < selector_history_buf.size(); j++) - { - const int trial_idx = selector_history_buf[j]; - - const uint8_t* pSelectors = &m_selector_palette[m_selector_remap_table_new_to_old[trial_idx]][0]; - - if (m_params.m_compression_level <= 1) - { - // Predict if evaluating the full color error would cause an early out, by summing the abs err of the selector indices. - int sel_diff = 0; - for (uint32_t p = 0; p < 16; p += 4) - { - sel_diff += iabs(pCur_selectors[p + 0] - pSelectors[p + 0]); - sel_diff += iabs(pCur_selectors[p + 1] - pSelectors[p + 1]); - sel_diff += iabs(pCur_selectors[p + 2] - pSelectors[p + 2]); - sel_diff += iabs(pCur_selectors[p + 3] - pSelectors[p + 3]); - if (sel_diff >= SEL_DIFF_THRESHOLD) - break; - } - if (sel_diff >= SEL_DIFF_THRESHOLD) - continue; - } - - const uint64_t thresh_err = minimum(limit_err, best_trial_err); - uint64_t trial_err = 0; - - // This tends to early out quickly, so SSE has a hard time competing. - if (r.get_params().m_perceptual) - { - for (uint32_t p = 0; p < 16; p++) - { - uint32_t sel = pSelectors[p]; - trial_err += color_distance(true, src_pixels.get_ptr()[p], block_colors[sel], false); - if (trial_err > thresh_err) - break; - } - } - else - { - for (uint32_t p = 0; p < 16; p++) - { - uint32_t sel = pSelectors[p]; - trial_err += color_distance(false, src_pixels.get_ptr()[p], block_colors[sel], false); - if (trial_err > thresh_err) - break; - } - } - - if ((trial_err < best_trial_err) && (trial_err <= thresh_err)) - { - assert(trial_err <= limit_err); - - best_trial_err = trial_err; - best_trial_idx = trial_idx; - best_trial_history_buf_idx = j; - } - } - - if (best_trial_err != UINT64_MAX) - { - if (new_selector_index != best_trial_idx) - total_selector_indices_remapped++; - - new_selector_index = best_trial_idx; - - total_used_selector_history_buf++; - - selector_history_buf_index = best_trial_history_buf_idx; - - selector_history_buf_histogram.inc(best_trial_history_buf_idx); - } - - } // if (m_params.m_selector_rdo_quality_thresh > 0.0f) - - m.m_selector_index = m_selector_remap_table_new_to_old[new_selector_index]; - - - if ((selector_history_buf_rle_count) && (selector_history_buf_index != 0)) - { - if (selector_history_buf_rle_count >= (int)basist::SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH) - { - selector_syms[slice_index].push_back(SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX); - selector_syms[slice_index].push_back(selector_history_buf_rle_count); - - int run_sym = selector_history_buf_rle_count - basist::SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH; - if (run_sym >= ((int)basist::SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1)) - selector_history_buf_rle_histogram.inc(basist::SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1); - else - selector_history_buf_rle_histogram.inc(run_sym); - - selector_histogram.inc(SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX); - } - else - { - for (int k = 0; k < selector_history_buf_rle_count; k++) - { - uint32_t sym_index = SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX + 0; - - selector_syms[slice_index].push_back(sym_index); - - selector_histogram.inc(sym_index); - } - } - - selector_history_buf_rle_count = 0; - } - - if (selector_history_buf_index >= 0) - { - if (selector_history_buf_index == 0) - selector_history_buf_rle_count++; - else - { - uint32_t history_buf_sym = SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX + selector_history_buf_index; - - selector_syms[slice_index].push_back(history_buf_sym); - - selector_histogram.inc(history_buf_sym); - } - } - else - { - selector_syms[slice_index].push_back(new_selector_index); - - selector_histogram.inc(new_selector_index); - } - - m.m_selector_history_buf_index = selector_history_buf_index; - - if (selector_history_buf_index < 0) - selector_history_buf.add(new_selector_index); - else if (selector_history_buf.size()) - selector_history_buf.use(selector_history_buf_index); - } - block_selector_indices.push_back(m.m_selector_index); - - } // block_x - - } // block_y - - if (endpoint_pred_repeat_count > 0) - { - if (endpoint_pred_repeat_count > (int)basist::ENDPOINT_PRED_MIN_REPEAT_COUNT) - { - endpoint_pred_histogram.inc(basist::ENDPOINT_PRED_REPEAT_LAST_SYMBOL); - endpoint_pred_syms[slice_index].push_back(basist::ENDPOINT_PRED_REPEAT_LAST_SYMBOL); - - endpoint_pred_syms[slice_index].push_back(endpoint_pred_repeat_count); - } - else - { - for (int j = 0; j < endpoint_pred_repeat_count; j++) - { - endpoint_pred_histogram.inc(prev_endpoint_pred_sym_bits); - endpoint_pred_syms[slice_index].push_back(prev_endpoint_pred_sym_bits); - } - } - - endpoint_pred_repeat_count = 0; - } - - if (selector_history_buf_rle_count) - { - if (selector_history_buf_rle_count >= (int)basist::SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH) - { - selector_syms[slice_index].push_back(SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX); - selector_syms[slice_index].push_back(selector_history_buf_rle_count); - - int run_sym = selector_history_buf_rle_count - basist::SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH; - if (run_sym >= ((int)basist::SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1)) - selector_history_buf_rle_histogram.inc(basist::SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1); - else - selector_history_buf_rle_histogram.inc(run_sym); - - selector_histogram.inc(SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX); - } - else - { - for (int i = 0; i < selector_history_buf_rle_count; i++) - { - uint32_t sym_index = SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX + 0; - - selector_syms[slice_index].push_back(sym_index); - - selector_histogram.inc(sym_index); - } - } - - selector_history_buf_rle_count = 0; - } - - } // slice_index - - //for (int i = 0; i <= 255 * 3; i++) - //{ - // printf("%u, %u, %f\n", g_color_delta_bad_hist[i], g_color_delta_hist[i], g_color_delta_hist[i] ? g_color_delta_bad_hist[i] / (float)g_color_delta_hist[i] : 0); - //} - - double total_prep_time = tm.get_elapsed_secs(); - debug_printf("basisu_backend::encode_image: Total prep time: %3.2f\n", total_prep_time); - - debug_printf("Endpoint pred RDO total endpoint indices remapped: %u %3.2f%%\n", - total_endpoint_indices_remapped, total_endpoint_indices_remapped * 100.0f / get_total_blocks()); - - debug_printf("Selector history RDO total selector indices remapped: %u %3.2f%%, Used history buf: %u %3.2f%%\n", - total_selector_indices_remapped, total_selector_indices_remapped * 100.0f / get_total_blocks(), - total_used_selector_history_buf, total_used_selector_history_buf * 100.0f / get_total_blocks()); - - //if ((total_endpoint_indices_remapped) && (m_params.m_compression_level > 0)) - if ((total_endpoint_indices_remapped) && (m_params.m_compression_level > 1) && (!m_params.m_used_global_codebooks)) - { - int_vec unused; - r.reoptimize_remapped_endpoints(block_endpoint_indices, unused, false, &block_selector_indices); - - create_endpoint_palette(); - } - - check_for_valid_cr_blocks(); - compute_slice_crcs(); - - double endpoint_pred_entropy = endpoint_pred_histogram.get_entropy() / endpoint_pred_histogram.get_total(); - double delta_endpoint_entropy = delta_endpoint_histogram.get_entropy() / delta_endpoint_histogram.get_total(); - double selector_entropy = selector_histogram.get_entropy() / selector_histogram.get_total(); - - debug_printf("Histogram entropy: EndpointPred: %3.3f DeltaEndpoint: %3.3f DeltaSelector: %3.3f\n", endpoint_pred_entropy, delta_endpoint_entropy, selector_entropy); - - if (!endpoint_pred_histogram.get_total()) - endpoint_pred_histogram.inc(0); - huffman_encoding_table endpoint_pred_model; - if (!endpoint_pred_model.init(endpoint_pred_histogram, 16)) - { - error_printf("endpoint_pred_model.init() failed!"); - return false; - } - - if (!delta_endpoint_histogram.get_total()) - delta_endpoint_histogram.inc(0); - huffman_encoding_table delta_endpoint_model; - if (!delta_endpoint_model.init(delta_endpoint_histogram, 16)) - { - error_printf("delta_endpoint_model.init() failed!"); - return false; - } - if (!selector_histogram.get_total()) - selector_histogram.inc(0); - - huffman_encoding_table selector_model; - if (!selector_model.init(selector_histogram, 16)) - { - error_printf("selector_model.init() failed!"); - return false; - } - - if (!selector_history_buf_rle_histogram.get_total()) - selector_history_buf_rle_histogram.inc(0); - - huffman_encoding_table selector_history_buf_rle_model; - if (!selector_history_buf_rle_model.init(selector_history_buf_rle_histogram, 16)) - { - error_printf("selector_history_buf_rle_model.init() failed!"); - return false; - } - - bitwise_coder coder; - coder.init(1024 * 1024 * 4); - - uint32_t endpoint_pred_model_bits = coder.emit_huffman_table(endpoint_pred_model); - uint32_t delta_endpoint_bits = coder.emit_huffman_table(delta_endpoint_model); - uint32_t selector_model_bits = coder.emit_huffman_table(selector_model); - uint32_t selector_history_buf_run_sym_bits = coder.emit_huffman_table(selector_history_buf_rle_model); - - coder.put_bits(basist::MAX_SELECTOR_HISTORY_BUF_SIZE, 13); - - debug_printf("Model sizes: EndpointPred: %u bits %u bytes (%3.3f bpp) DeltaEndpoint: %u bits %u bytes (%3.3f bpp) Selector: %u bits %u bytes (%3.3f bpp) SelectorHistBufRLE: %u bits %u bytes (%3.3f bpp)\n", - endpoint_pred_model_bits, (endpoint_pred_model_bits + 7) / 8, endpoint_pred_model_bits / float(get_total_input_texels()), - delta_endpoint_bits, (delta_endpoint_bits + 7) / 8, delta_endpoint_bits / float(get_total_input_texels()), - selector_model_bits, (selector_model_bits + 7) / 8, selector_model_bits / float(get_total_input_texels()), - selector_history_buf_run_sym_bits, (selector_history_buf_run_sym_bits + 7) / 8, selector_history_buf_run_sym_bits / float(get_total_input_texels())); - - coder.flush(); - - m_output.m_slice_image_tables = coder.get_bytes(); - - uint32_t total_endpoint_pred_bits = 0, total_delta_endpoint_bits = 0, total_selector_bits = 0; - - uint32_t total_image_bytes = 0; - - m_output.m_slice_image_data.resize(m_slices.size()); - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - //const uint32_t width = m_slices[slice_index].m_width; - //const uint32_t height = m_slices[slice_index].m_height; - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x; - const uint32_t num_blocks_y = m_slices[slice_index].m_num_blocks_y; - - coder.init(1024 * 1024 * 4); - - uint32_t cur_selector_sym_ofs = 0; - uint32_t selector_rle_count = 0; - - int endpoint_pred_repeat_count = 0; - uint32_t cur_endpoint_pred_sym_ofs = 0; -// uint32_t prev_endpoint_pred_sym = 0; - uint32_t prev_endpoint_index = 0; - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - const encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - - if (((block_x & 1) == 0) && ((block_y & 1) == 0)) - { - if (endpoint_pred_repeat_count > 0) - { - endpoint_pred_repeat_count--; - } - else - { - uint32_t sym = endpoint_pred_syms[slice_index][cur_endpoint_pred_sym_ofs++]; - - if (sym == basist::ENDPOINT_PRED_REPEAT_LAST_SYMBOL) - { - total_endpoint_pred_bits += coder.put_code(sym, endpoint_pred_model); - - endpoint_pred_repeat_count = endpoint_pred_syms[slice_index][cur_endpoint_pred_sym_ofs++]; - assert(endpoint_pred_repeat_count >= (int)basist::ENDPOINT_PRED_MIN_REPEAT_COUNT); - - total_endpoint_pred_bits += coder.put_vlc(endpoint_pred_repeat_count - basist::ENDPOINT_PRED_MIN_REPEAT_COUNT, basist::ENDPOINT_PRED_COUNT_VLC_BITS); - - endpoint_pred_repeat_count--; - } - else - { - total_endpoint_pred_bits += coder.put_code(sym, endpoint_pred_model); - - //prev_endpoint_pred_sym = sym; - } - } - } - - const int new_endpoint_index = m_endpoint_remap_table_old_to_new[m.m_endpoint_index]; - - if (m.m_endpoint_predictor == basist::NO_ENDPOINT_PRED_INDEX) - { - int endpoint_delta = new_endpoint_index - prev_endpoint_index; - if (endpoint_delta < 0) - endpoint_delta += (int)r.get_total_endpoint_clusters(); - - total_delta_endpoint_bits += coder.put_code(endpoint_delta, delta_endpoint_model); - } - - prev_endpoint_index = new_endpoint_index; - - if ((!is_video) || (m.m_endpoint_predictor != basist::CR_ENDPOINT_PRED_INDEX)) - { - if (!selector_rle_count) - { - uint32_t selector_sym_index = selector_syms[slice_index][cur_selector_sym_ofs++]; - - if (selector_sym_index == SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX) - selector_rle_count = selector_syms[slice_index][cur_selector_sym_ofs++]; - - total_selector_bits += coder.put_code(selector_sym_index, selector_model); - - if (selector_sym_index == SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX) - { - int run_sym = selector_rle_count - basist::SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH; - if (run_sym >= ((int)basist::SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1)) - { - total_selector_bits += coder.put_code(basist::SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1, selector_history_buf_rle_model); - - uint32_t n = selector_rle_count - basist::SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH; - total_selector_bits += coder.put_vlc(n, 7); - } - else - total_selector_bits += coder.put_code(run_sym, selector_history_buf_rle_model); - } - } - - if (selector_rle_count) - selector_rle_count--; - } - - } // block_x - - } // block_y - - BASISU_BACKEND_VERIFY(cur_endpoint_pred_sym_ofs == endpoint_pred_syms[slice_index].size()); - BASISU_BACKEND_VERIFY(cur_selector_sym_ofs == selector_syms[slice_index].size()); - - coder.flush(); - - m_output.m_slice_image_data[slice_index] = coder.get_bytes(); - - total_image_bytes += (uint32_t)coder.get_bytes().size(); - - debug_printf("Slice %u compressed size: %u bytes, %3.3f bits per slice texel\n", slice_index, m_output.m_slice_image_data[slice_index].size(), m_output.m_slice_image_data[slice_index].size() * 8.0f / (m_slices[slice_index].m_orig_width * m_slices[slice_index].m_orig_height)); - - } // slice_index - - const double total_texels = static_cast(get_total_input_texels()); - const double total_blocks = static_cast(get_total_blocks()); - - debug_printf("Total endpoint pred bits: %u bytes: %u bits/texel: %3.3f bits/block: %3.3f\n", total_endpoint_pred_bits, total_endpoint_pred_bits / 8, total_endpoint_pred_bits / total_texels, total_endpoint_pred_bits / total_blocks); - debug_printf("Total delta endpoint bits: %u bytes: %u bits/texel: %3.3f bits/block: %3.3f\n", total_delta_endpoint_bits, total_delta_endpoint_bits / 8, total_delta_endpoint_bits / total_texels, total_delta_endpoint_bits / total_blocks); - debug_printf("Total selector bits: %u bytes: %u bits/texel: %3.3f bits/block: %3.3f\n", total_selector_bits, total_selector_bits / 8, total_selector_bits / total_texels, total_selector_bits / total_blocks); - - debug_printf("Total table bytes: %u, %3.3f bits/texel\n", m_output.m_slice_image_tables.size(), m_output.m_slice_image_tables.size() * 8.0f / total_texels); - debug_printf("Total image bytes: %u, %3.3f bits/texel\n", total_image_bytes, total_image_bytes * 8.0f / total_texels); - - return true; - } - - bool basisu_backend::encode_endpoint_palette() - { - const basisu_frontend& r = *m_pFront_end; - - // The endpoint indices may have been changed by the backend's RDO step, so go and figure out which ones are actually used again. - bool_vec old_endpoint_was_used(r.get_total_endpoint_clusters()); - uint32_t first_old_entry_index = UINT32_MAX; - - for (uint32_t slice_index = 0; slice_index < m_slices.size(); slice_index++) - { - const uint32_t num_blocks_x = m_slices[slice_index].m_num_blocks_x, num_blocks_y = m_slices[slice_index].m_num_blocks_y; - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - encoder_block& m = m_slice_encoder_blocks[slice_index](block_x, block_y); - const uint32_t old_endpoint_index = m.m_endpoint_index; - - old_endpoint_was_used[old_endpoint_index] = true; - first_old_entry_index = basisu::minimum(first_old_entry_index, old_endpoint_index); - } // block_x - } // block_y - } // slice_index - - debug_printf("basisu_backend::encode_endpoint_palette: first_old_entry_index: %u\n", first_old_entry_index); - - // Maps NEW to OLD endpoints - uint_vec endpoint_remap_table_new_to_old(r.get_total_endpoint_clusters()); - endpoint_remap_table_new_to_old.set_all(first_old_entry_index); - - bool_vec new_endpoint_was_used(r.get_total_endpoint_clusters()); - - for (uint32_t old_endpoint_index = 0; old_endpoint_index < m_endpoint_remap_table_old_to_new.size(); old_endpoint_index++) - { - if (old_endpoint_was_used[old_endpoint_index]) - { - const uint32_t new_endpoint_index = m_endpoint_remap_table_old_to_new[old_endpoint_index]; - - new_endpoint_was_used[new_endpoint_index] = true; - - endpoint_remap_table_new_to_old[new_endpoint_index] = old_endpoint_index; - } - } - - // TODO: Some new endpoint palette entries may actually be unused and aren't worth coding. Fix that. - - uint32_t total_unused_new_entries = 0; - for (uint32_t i = 0; i < new_endpoint_was_used.size(); i++) - if (!new_endpoint_was_used[i]) - total_unused_new_entries++; - debug_printf("basisu_backend::encode_endpoint_palette: total_unused_new_entries: %u out of %u\n", total_unused_new_entries, new_endpoint_was_used.size()); - - bool is_grayscale = true; - for (uint32_t old_endpoint_index = 0; old_endpoint_index < (uint32_t)m_endpoint_palette.size(); old_endpoint_index++) - { - int r5 = m_endpoint_palette[old_endpoint_index].m_color5[0]; - int g5 = m_endpoint_palette[old_endpoint_index].m_color5[1]; - int b5 = m_endpoint_palette[old_endpoint_index].m_color5[2]; - if ((r5 != g5) || (r5 != b5)) - { - is_grayscale = false; - break; - } - } - - histogram color5_delta_hist0(32); // prev 0-9, delta is -9 to 31 - histogram color5_delta_hist1(32); // prev 10-21, delta is -21 to 21 - histogram color5_delta_hist2(32); // prev 22-31, delta is -31 to 9 - histogram inten_delta_hist(8); - - color_rgba prev_color5(16, 16, 16, 0); - uint32_t prev_inten = 0; - - for (uint32_t new_endpoint_index = 0; new_endpoint_index < r.get_total_endpoint_clusters(); new_endpoint_index++) - { - const uint32_t old_endpoint_index = endpoint_remap_table_new_to_old[new_endpoint_index]; - - int delta_inten = m_endpoint_palette[old_endpoint_index].m_inten5 - prev_inten; - inten_delta_hist.inc(delta_inten & 7); - prev_inten = m_endpoint_palette[old_endpoint_index].m_inten5; - - for (uint32_t i = 0; i < (is_grayscale ? 1U : 3U); i++) - { - const int delta = (m_endpoint_palette[old_endpoint_index].m_color5[i] - prev_color5[i]) & 31; - - if (prev_color5[i] <= basist::COLOR5_PAL0_PREV_HI) - color5_delta_hist0.inc(delta); - else if (prev_color5[i] <= basist::COLOR5_PAL1_PREV_HI) - color5_delta_hist1.inc(delta); - else - color5_delta_hist2.inc(delta); - - prev_color5[i] = m_endpoint_palette[old_endpoint_index].m_color5[i]; - } - } - - if (!color5_delta_hist0.get_total()) color5_delta_hist0.inc(0); - if (!color5_delta_hist1.get_total()) color5_delta_hist1.inc(0); - if (!color5_delta_hist2.get_total()) color5_delta_hist2.inc(0); - - huffman_encoding_table color5_delta_model0, color5_delta_model1, color5_delta_model2, inten_delta_model; - if (!color5_delta_model0.init(color5_delta_hist0, 16)) - { - error_printf("color5_delta_model.init() failed!"); - return false; - } - - if (!color5_delta_model1.init(color5_delta_hist1, 16)) - { - error_printf("color5_delta_model.init() failed!"); - return false; - } - - if (!color5_delta_model2.init(color5_delta_hist2, 16)) - { - error_printf("color5_delta_model.init() failed!"); - return false; - } - - if (!inten_delta_model.init(inten_delta_hist, 16)) - { - error_printf("inten3_model.init() failed!"); - return false; - } - - bitwise_coder coder; - - coder.init(8192); - - coder.emit_huffman_table(color5_delta_model0); - coder.emit_huffman_table(color5_delta_model1); - coder.emit_huffman_table(color5_delta_model2); - coder.emit_huffman_table(inten_delta_model); - - coder.put_bits(is_grayscale, 1); - - prev_color5.set(16, 16, 16, 0); - prev_inten = 0; - - for (uint32_t new_endpoint_index = 0; new_endpoint_index < r.get_total_endpoint_clusters(); new_endpoint_index++) - { - const uint32_t old_endpoint_index = endpoint_remap_table_new_to_old[new_endpoint_index]; - - int delta_inten = (m_endpoint_palette[old_endpoint_index].m_inten5 - prev_inten) & 7; - coder.put_code(delta_inten, inten_delta_model); - prev_inten = m_endpoint_palette[old_endpoint_index].m_inten5; - - for (uint32_t i = 0; i < (is_grayscale ? 1U : 3U); i++) - { - const int delta = (m_endpoint_palette[old_endpoint_index].m_color5[i] - prev_color5[i]) & 31; - - if (prev_color5[i] <= basist::COLOR5_PAL0_PREV_HI) - coder.put_code(delta, color5_delta_model0); - else if (prev_color5[i] <= basist::COLOR5_PAL1_PREV_HI) - coder.put_code(delta, color5_delta_model1); - else - coder.put_code(delta, color5_delta_model2); - - prev_color5[i] = m_endpoint_palette[old_endpoint_index].m_color5[i]; - } - - } // q - - coder.flush(); - - m_output.m_endpoint_palette = coder.get_bytes(); - - debug_printf("Endpoint codebook size: %u bits %u bytes, Bits per entry: %3.1f, Avg bits/texel: %3.3f\n", - 8 * (int)m_output.m_endpoint_palette.size(), (int)m_output.m_endpoint_palette.size(), m_output.m_endpoint_palette.size() * 8.0f / r.get_total_endpoint_clusters(), m_output.m_endpoint_palette.size() * 8.0f / get_total_input_texels()); - - return true; - } - - bool basisu_backend::encode_selector_palette() - { - const basisu_frontend& r = *m_pFront_end; - - histogram delta_selector_pal_histogram(256); - - for (uint32_t q = 0; q < r.get_total_selector_clusters(); q++) - { - if (!q) - continue; - - const etc1_selector_palette_entry& cur = m_selector_palette[m_selector_remap_table_new_to_old[q]]; - const etc1_selector_palette_entry predictor(m_selector_palette[m_selector_remap_table_new_to_old[q - 1]]); - - for (uint32_t j = 0; j < 4; j++) - delta_selector_pal_histogram.inc(cur.get_byte(j) ^ predictor.get_byte(j)); - } - - if (!delta_selector_pal_histogram.get_total()) - delta_selector_pal_histogram.inc(0); - - huffman_encoding_table delta_selector_pal_model; - if (!delta_selector_pal_model.init(delta_selector_pal_histogram, 16)) - { - error_printf("delta_selector_pal_model.init() failed!"); - return false; - } - - bitwise_coder coder; - coder.init(1024 * 1024); - - coder.put_bits(0, 1); // use global codebook - coder.put_bits(0, 1); // uses hybrid codebooks - - coder.put_bits(0, 1); // raw bytes - - coder.emit_huffman_table(delta_selector_pal_model); - - for (uint32_t q = 0; q < r.get_total_selector_clusters(); q++) - { - if (!q) - { - for (uint32_t j = 0; j < 4; j++) - coder.put_bits(m_selector_palette[m_selector_remap_table_new_to_old[q]].get_byte(j), 8); - continue; - } - - const etc1_selector_palette_entry& cur = m_selector_palette[m_selector_remap_table_new_to_old[q]]; - const etc1_selector_palette_entry predictor(m_selector_palette[m_selector_remap_table_new_to_old[q - 1]]); - - for (uint32_t j = 0; j < 4; j++) - coder.put_code(cur.get_byte(j) ^ predictor.get_byte(j), delta_selector_pal_model); - } - - coder.flush(); - - m_output.m_selector_palette = coder.get_bytes(); - - if (m_output.m_selector_palette.size() >= r.get_total_selector_clusters() * 4) - { - coder.init(1024 * 1024); - - coder.put_bits(0, 1); // use global codebook - coder.put_bits(0, 1); // uses hybrid codebooks - - coder.put_bits(1, 1); // raw bytes - - for (uint32_t q = 0; q < r.get_total_selector_clusters(); q++) - { - const uint32_t i = m_selector_remap_table_new_to_old[q]; - - for (uint32_t j = 0; j < 4; j++) - coder.put_bits(m_selector_palette[i].get_byte(j), 8); - } - - coder.flush(); - - m_output.m_selector_palette = coder.get_bytes(); - } - - debug_printf("Selector codebook bits: %u bytes: %u, Bits per entry: %3.1f, Avg bits/texel: %3.3f\n", - (int)m_output.m_selector_palette.size() * 8, (int)m_output.m_selector_palette.size(), - m_output.m_selector_palette.size() * 8.0f / r.get_total_selector_clusters(), m_output.m_selector_palette.size() * 8.0f / get_total_input_texels()); - - return true; - } - - uint32_t basisu_backend::encode() - { - //const bool is_video = m_pFront_end->get_params().m_tex_type == basist::cBASISTexTypeVideoFrames; - m_output.m_slice_desc = m_slices; - m_output.m_etc1s = m_params.m_etc1s; - m_output.m_uses_global_codebooks = m_params.m_used_global_codebooks; - m_output.m_srgb = m_pFront_end->get_params().m_perceptual; - - create_endpoint_palette(); - create_selector_palette(); - - create_encoder_blocks(); - - if (!encode_image()) - return 0; - - if (!encode_endpoint_palette()) - return 0; - - if (!encode_selector_palette()) - return 0; - - uint32_t total_compressed_bytes = (uint32_t)(m_output.m_slice_image_tables.size() + m_output.m_endpoint_palette.size() + m_output.m_selector_palette.size()); - for (uint32_t i = 0; i < m_output.m_slice_image_data.size(); i++) - total_compressed_bytes += (uint32_t)m_output.m_slice_image_data[i].size(); - - debug_printf("Wrote %u bytes, %3.3f bits/texel\n", total_compressed_bytes, total_compressed_bytes * 8.0f / get_total_input_texels()); - - return total_compressed_bytes; - } - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_backend.h b/WickedEngine/Utility/basis_universal/encoder/basisu_backend.h deleted file mode 100644 index 07778aeb9..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_backend.h +++ /dev/null @@ -1,409 +0,0 @@ -// basisu_backend.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once - -#include "../transcoder/basisu.h" -#include "basisu_enc.h" -#include "../transcoder/basisu_transcoder_internal.h" -#include "basisu_frontend.h" - -namespace basisu -{ - struct etc1_selector_palette_entry - { - etc1_selector_palette_entry() - { - clear(); - } - - void clear() - { - basisu::clear_obj(*this); - } - - uint8_t operator[] (uint32_t i) const { assert(i < 16); return m_selectors[i]; } - uint8_t& operator[] (uint32_t i) { assert(i < 16); return m_selectors[i]; } - - void set_uint32(uint32_t v) - { - for (uint32_t byte_index = 0; byte_index < 4; byte_index++) - { - uint32_t b = (v >> (byte_index * 8)) & 0xFF; - - m_selectors[byte_index * 4 + 0] = b & 3; - m_selectors[byte_index * 4 + 1] = (b >> 2) & 3; - m_selectors[byte_index * 4 + 2] = (b >> 4) & 3; - m_selectors[byte_index * 4 + 3] = (b >> 6) & 3; - } - } - - uint32_t get_uint32() const - { - return get_byte(0) | (get_byte(1) << 8) | (get_byte(2) << 16) | (get_byte(3) << 24); - } - - uint32_t get_byte(uint32_t byte_index) const - { - assert(byte_index < 4); - - return m_selectors[byte_index * 4 + 0] | - (m_selectors[byte_index * 4 + 1] << 2) | - (m_selectors[byte_index * 4 + 2] << 4) | - (m_selectors[byte_index * 4 + 3] << 6); - } - - uint8_t operator()(uint32_t x, uint32_t y) const { assert((x < 4) && (y < 4)); return m_selectors[x + y * 4]; } - uint8_t& operator()(uint32_t x, uint32_t y) { assert((x < 4) && (y < 4)); return m_selectors[x + y * 4]; } - - bool operator< (const etc1_selector_palette_entry& other) const - { - for (uint32_t i = 0; i < 16; i++) - { - if (m_selectors[i] < other.m_selectors[i]) - return true; - else if (m_selectors[i] != other.m_selectors[i]) - return false; - } - - return false; - } - - bool operator== (const etc1_selector_palette_entry& other) const - { - for (uint32_t i = 0; i < 16; i++) - { - if (m_selectors[i] != other.m_selectors[i]) - return false; - } - - return true; - } - - private: - uint8_t m_selectors[16]; - }; - - typedef basisu::vector etc1_selector_palette_entry_vec; - - struct encoder_block - { - encoder_block() - { - clear(); - } - - uint32_t m_endpoint_predictor; - - int m_endpoint_index; - int m_selector_index; - - int m_selector_history_buf_index; - - bool m_is_cr_target; - void clear() - { - m_endpoint_predictor = 0; - - m_endpoint_index = 0; - m_selector_index = 0; - - m_selector_history_buf_index = 0; - m_is_cr_target = false; - } - }; - - typedef basisu::vector encoder_block_vec; - typedef vector2D encoder_block_vec2D; - - struct etc1_endpoint_palette_entry - { - etc1_endpoint_palette_entry() - { - clear(); - } - - color_rgba m_color5; - uint32_t m_inten5; - bool m_color5_valid; - - void clear() - { - clear_obj(*this); - } - }; - - typedef basisu::vector etc1_endpoint_palette_entry_vec; - - struct basisu_backend_params - { - bool m_etc1s; - bool m_debug, m_debug_images; - float m_endpoint_rdo_quality_thresh; - float m_selector_rdo_quality_thresh; - uint32_t m_compression_level; - - bool m_used_global_codebooks; - - bool m_validate; - - basisu_backend_params() - { - clear(); - } - - void clear() - { - m_etc1s = false; - m_debug = false; - m_debug_images = false; - m_endpoint_rdo_quality_thresh = 0.0f; - m_selector_rdo_quality_thresh = 0.0f; - m_compression_level = 0; - m_used_global_codebooks = false; - m_validate = true; - } - }; - - struct basisu_backend_slice_desc - { - basisu_backend_slice_desc() - { - clear(); - } - - void clear() - { - clear_obj(*this); - } - - uint32_t m_first_block_index; - - uint32_t m_orig_width; - uint32_t m_orig_height; - - uint32_t m_width; - uint32_t m_height; - - uint32_t m_num_blocks_x; - uint32_t m_num_blocks_y; - - uint32_t m_num_macroblocks_x; - uint32_t m_num_macroblocks_y; - - uint32_t m_source_file_index; // also the basis image index - uint32_t m_mip_index; - bool m_alpha; - bool m_iframe; - }; - - typedef basisu::vector basisu_backend_slice_desc_vec; - - struct basisu_backend_output - { - basist::basis_tex_format m_tex_format; - - bool m_etc1s; - bool m_uses_global_codebooks; - bool m_srgb; - - uint32_t m_num_endpoints; - uint32_t m_num_selectors; - - uint8_vec m_endpoint_palette; - uint8_vec m_selector_palette; - - basisu_backend_slice_desc_vec m_slice_desc; - - uint8_vec m_slice_image_tables; - basisu::vector m_slice_image_data; - uint16_vec m_slice_image_crcs; - - basisu_backend_output() - { - clear(); - } - - void clear() - { - m_tex_format = basist::basis_tex_format::cETC1S; - m_etc1s = false; - m_uses_global_codebooks = false; - m_srgb = true; - - m_num_endpoints = 0; - m_num_selectors = 0; - - m_endpoint_palette.clear(); - m_selector_palette.clear(); - m_slice_desc.clear(); - m_slice_image_tables.clear(); - m_slice_image_data.clear(); - m_slice_image_crcs.clear(); - } - - uint32_t get_output_size_estimate() const - { - uint32_t total_compressed_bytes = (uint32_t)(m_slice_image_tables.size() + m_endpoint_palette.size() + m_selector_palette.size()); - for (uint32_t i = 0; i < m_slice_image_data.size(); i++) - total_compressed_bytes += (uint32_t)m_slice_image_data[i].size(); - - return total_compressed_bytes; - } - }; - - class basisu_backend - { - BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(basisu_backend); - - public: - - basisu_backend(); - - void clear(); - - void init(basisu_frontend *pFront_end, basisu_backend_params ¶ms, const basisu_backend_slice_desc_vec &slice_desc); - - uint32_t encode(); - - const basisu_backend_output &get_output() const { return m_output; } - const basisu_backend_params& get_params() const { return m_params; } - - private: - basisu_frontend *m_pFront_end; - basisu_backend_params m_params; - basisu_backend_slice_desc_vec m_slices; - basisu_backend_output m_output; - - etc1_endpoint_palette_entry_vec m_endpoint_palette; - etc1_selector_palette_entry_vec m_selector_palette; - - struct etc1_global_selector_cb_entry_desc - { - uint32_t m_pal_index; - uint32_t m_mod_index; - bool m_was_used; - }; - - typedef basisu::vector etc1_global_selector_cb_entry_desc_vec; - - etc1_global_selector_cb_entry_desc_vec m_global_selector_palette_desc; - - basisu::vector m_slice_encoder_blocks; - - // Maps OLD to NEW endpoint/selector indices - uint_vec m_endpoint_remap_table_old_to_new; - uint_vec m_endpoint_remap_table_new_to_old; - bool_vec m_old_endpoint_was_used; - bool_vec m_new_endpoint_was_used; - - uint_vec m_selector_remap_table_old_to_new; - - // Maps NEW to OLD endpoint/selector indices - uint_vec m_selector_remap_table_new_to_old; - - uint32_t get_total_slices() const - { - return (uint32_t)m_slices.size(); - } - - uint32_t get_total_slice_blocks() const - { - return m_pFront_end->get_total_output_blocks(); - } - - uint32_t get_block_index(uint32_t slice_index, uint32_t block_x, uint32_t block_y) const - { - const basisu_backend_slice_desc &slice = m_slices[slice_index]; - - assert((block_x < slice.m_num_blocks_x) && (block_y < slice.m_num_blocks_y)); - - return slice.m_first_block_index + block_y * slice.m_num_blocks_x + block_x; - } - - uint32_t get_total_blocks(uint32_t slice_index) const - { - return m_slices[slice_index].m_num_blocks_x * m_slices[slice_index].m_num_blocks_y; - } - - uint32_t get_total_blocks() const - { - uint32_t total_blocks = 0; - for (uint32_t i = 0; i < m_slices.size(); i++) - total_blocks += get_total_blocks(i); - return total_blocks; - } - - // Returns the total number of input texels, not counting padding up to blocks/macroblocks. - uint32_t get_total_input_texels(uint32_t slice_index) const - { - return m_slices[slice_index].m_orig_width * m_slices[slice_index].m_orig_height; - } - - uint32_t get_total_input_texels() const - { - uint32_t total_texels = 0; - for (uint32_t i = 0; i < m_slices.size(); i++) - total_texels += get_total_input_texels(i); - return total_texels; - } - - int find_slice(uint32_t block_index, uint32_t *pBlock_x, uint32_t *pBlock_y) const - { - for (uint32_t i = 0; i < m_slices.size(); i++) - { - if ((block_index >= m_slices[i].m_first_block_index) && (block_index < (m_slices[i].m_first_block_index + m_slices[i].m_num_blocks_x * m_slices[i].m_num_blocks_y))) - { - const uint32_t ofs = block_index - m_slices[i].m_first_block_index; - const uint32_t x = ofs % m_slices[i].m_num_blocks_x; - const uint32_t y = ofs / m_slices[i].m_num_blocks_x; - - if (pBlock_x) *pBlock_x = x; - if (pBlock_y) *pBlock_y = y; - - return i; - } - } - return -1; - } - - void create_endpoint_palette(); - - void create_selector_palette(); - - // endpoint palette - // 5:5:5 and predicted 4:4:4 colors, 1 or 2 3-bit intensity table indices - // selector palette - // 4x4 2-bit selectors - - // per-macroblock: - // 4 diff bits - // 4 flip bits - // Endpoint template index, 1-8 endpoint indices - // Alternately, if no template applies, we can send 4 ETC1S bits followed by 4-8 endpoint indices - // 4 selector indices - - void reoptimize_and_sort_endpoints_codebook(uint32_t total_block_endpoints_remapped, uint_vec &all_endpoint_indices); - void sort_selector_codebook(); - void create_encoder_blocks(); - void compute_slice_crcs(); - bool encode_image(); - bool encode_endpoint_palette(); - bool encode_selector_palette(); - int find_video_frame(int slice_index, int delta); - void check_for_valid_cr_blocks(); - }; - -} // namespace basisu - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_basis_file.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_basis_file.cpp deleted file mode 100644 index f4c77bef2..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_basis_file.cpp +++ /dev/null @@ -1,269 +0,0 @@ -// basisu_basis_file.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_basis_file.h" -#include "../transcoder/basisu_transcoder.h" - -// The output file version. Keep in sync with BASISD_SUPPORTED_BASIS_VERSION. -#define BASIS_FILE_VERSION (0x13) - -namespace basisu -{ - void basisu_file::create_header(const basisu_backend_output &encoder_output, basist::basis_texture_type tex_type, uint32_t userdata0, uint32_t userdata1, bool y_flipped, uint32_t us_per_frame) - { - m_header.m_header_size = sizeof(basist::basis_file_header); - - m_header.m_data_size = m_total_file_size - sizeof(basist::basis_file_header); - - m_header.m_total_slices = (uint32_t)encoder_output.m_slice_desc.size(); - - m_header.m_total_images = 0; - for (uint32_t i = 0; i < encoder_output.m_slice_desc.size(); i++) - m_header.m_total_images = maximum(m_header.m_total_images, encoder_output.m_slice_desc[i].m_source_file_index + 1); - - m_header.m_tex_format = (int)encoder_output.m_tex_format; - m_header.m_flags = 0; - - if (encoder_output.m_etc1s) - { - assert(encoder_output.m_tex_format == basist::basis_tex_format::cETC1S); - m_header.m_flags = m_header.m_flags | basist::cBASISHeaderFlagETC1S; - } - else - { - assert(encoder_output.m_tex_format != basist::basis_tex_format::cETC1S); - } - - if (y_flipped) - m_header.m_flags = m_header.m_flags | basist::cBASISHeaderFlagYFlipped; - if (encoder_output.m_uses_global_codebooks) - m_header.m_flags = m_header.m_flags | basist::cBASISHeaderFlagUsesGlobalCodebook; - if (encoder_output.m_srgb) - m_header.m_flags = m_header.m_flags | basist::cBASISHeaderFlagSRGB; - - for (uint32_t i = 0; i < encoder_output.m_slice_desc.size(); i++) - { - if (encoder_output.m_slice_desc[i].m_alpha) - { - m_header.m_flags = m_header.m_flags | basist::cBASISHeaderFlagHasAlphaSlices; - break; - } - } - - m_header.m_tex_type = static_cast(tex_type); - m_header.m_us_per_frame = clamp(us_per_frame, 0, basist::cBASISMaxUSPerFrame); - - m_header.m_userdata0 = userdata0; - m_header.m_userdata1 = userdata1; - - m_header.m_total_endpoints = encoder_output.m_num_endpoints; - if (!encoder_output.m_uses_global_codebooks) - { - m_header.m_endpoint_cb_file_ofs = m_endpoint_cb_file_ofs; - m_header.m_endpoint_cb_file_size = (uint32_t)encoder_output.m_endpoint_palette.size(); - } - else - { - assert(!m_endpoint_cb_file_ofs); - } - - m_header.m_total_selectors = encoder_output.m_num_selectors; - if (!encoder_output.m_uses_global_codebooks) - { - m_header.m_selector_cb_file_ofs = m_selector_cb_file_ofs; - m_header.m_selector_cb_file_size = (uint32_t)encoder_output.m_selector_palette.size(); - } - else - { - assert(!m_selector_cb_file_ofs); - } - - m_header.m_tables_file_ofs = m_tables_file_ofs; - m_header.m_tables_file_size = (uint32_t)encoder_output.m_slice_image_tables.size(); - - m_header.m_slice_desc_file_ofs = m_slice_descs_file_ofs; - } - - bool basisu_file::create_image_descs(const basisu_backend_output &encoder_output) - { - const basisu_backend_slice_desc_vec &slice_descs = encoder_output.m_slice_desc; - - m_images_descs.resize(slice_descs.size()); - - uint64_t cur_slice_file_ofs = m_first_image_file_ofs; - for (uint32_t i = 0; i < slice_descs.size(); i++) - { - clear_obj(m_images_descs[i]); - - m_images_descs[i].m_image_index = slice_descs[i].m_source_file_index; - m_images_descs[i].m_level_index = slice_descs[i].m_mip_index; - - if (slice_descs[i].m_alpha) - m_images_descs[i].m_flags = m_images_descs[i].m_flags | basist::cSliceDescFlagsHasAlpha; - if (slice_descs[i].m_iframe) - m_images_descs[i].m_flags = m_images_descs[i].m_flags | basist::cSliceDescFlagsFrameIsIFrame; - - m_images_descs[i].m_orig_width = slice_descs[i].m_orig_width; - m_images_descs[i].m_orig_height = slice_descs[i].m_orig_height; - m_images_descs[i].m_num_blocks_x = slice_descs[i].m_num_blocks_x; - m_images_descs[i].m_num_blocks_y = slice_descs[i].m_num_blocks_y; - m_images_descs[i].m_slice_data_crc16 = encoder_output.m_slice_image_crcs[i]; - - if (encoder_output.m_slice_image_data[i].size() > UINT32_MAX) - { - error_printf("basisu_file::create_image_descs: Basis file too large\n"); - return false; - } - - const uint32_t image_size = (uint32_t)encoder_output.m_slice_image_data[i].size(); - - m_images_descs[i].m_file_ofs = (uint32_t)cur_slice_file_ofs; - m_images_descs[i].m_file_size = image_size; - - cur_slice_file_ofs += image_size; - if (cur_slice_file_ofs > UINT32_MAX) - { - error_printf("basisu_file::create_image_descs: Basis file too large\n"); - return false; - } - } - - assert(cur_slice_file_ofs == m_total_file_size); - return true; - } - - void basisu_file::create_comp_data(const basisu_backend_output &encoder_output) - { - const basisu_backend_slice_desc_vec &slice_descs = encoder_output.m_slice_desc; - - append_vector(m_comp_data, reinterpret_cast(&m_header), sizeof(m_header)); - - assert(m_comp_data.size() == m_slice_descs_file_ofs); - append_vector(m_comp_data, reinterpret_cast(&m_images_descs[0]), m_images_descs.size() * sizeof(m_images_descs[0])); - - if (!encoder_output.m_uses_global_codebooks) - { - if (encoder_output.m_endpoint_palette.size()) - { - assert(m_comp_data.size() == m_endpoint_cb_file_ofs); - append_vector(m_comp_data, reinterpret_cast(&encoder_output.m_endpoint_palette[0]), encoder_output.m_endpoint_palette.size()); - } - - if (encoder_output.m_selector_palette.size()) - { - assert(m_comp_data.size() == m_selector_cb_file_ofs); - append_vector(m_comp_data, reinterpret_cast(&encoder_output.m_selector_palette[0]), encoder_output.m_selector_palette.size()); - } - } - - if (encoder_output.m_slice_image_tables.size()) - { - assert(m_comp_data.size() == m_tables_file_ofs); - append_vector(m_comp_data, reinterpret_cast(&encoder_output.m_slice_image_tables[0]), encoder_output.m_slice_image_tables.size()); - } - - assert(m_comp_data.size() == m_first_image_file_ofs); - for (uint32_t i = 0; i < slice_descs.size(); i++) - append_vector(m_comp_data, &encoder_output.m_slice_image_data[i][0], encoder_output.m_slice_image_data[i].size()); - - assert(m_comp_data.size() == m_total_file_size); - } - - void basisu_file::fixup_crcs() - { - basist::basis_file_header *pHeader = reinterpret_cast(&m_comp_data[0]); - - pHeader->m_data_size = m_total_file_size - sizeof(basist::basis_file_header); - pHeader->m_data_crc16 = basist::crc16(&m_comp_data[0] + sizeof(basist::basis_file_header), m_total_file_size - sizeof(basist::basis_file_header), 0); - - pHeader->m_header_crc16 = basist::crc16(&pHeader->m_data_size, sizeof(basist::basis_file_header) - BASISU_OFFSETOF(basist::basis_file_header, m_data_size), 0); - - pHeader->m_sig = basist::basis_file_header::cBASISSigValue; - pHeader->m_ver = BASIS_FILE_VERSION;// basist::basis_file_header::cBASISFirstVersion; - } - - bool basisu_file::init(const basisu_backend_output &encoder_output, basist::basis_texture_type tex_type, uint32_t userdata0, uint32_t userdata1, bool y_flipped, uint32_t us_per_frame) - { - clear(); - - const basisu_backend_slice_desc_vec &slice_descs = encoder_output.m_slice_desc; - - // The Basis file uses 32-bit fields for lots of stuff, so make sure it's not too large. - uint64_t check_size = 0; - if (!encoder_output.m_uses_global_codebooks) - { - check_size = (uint64_t)sizeof(basist::basis_file_header) + (uint64_t)sizeof(basist::basis_slice_desc) * slice_descs.size() + - (uint64_t)encoder_output.m_endpoint_palette.size() + (uint64_t)encoder_output.m_selector_palette.size() + (uint64_t)encoder_output.m_slice_image_tables.size(); - } - else - { - check_size = (uint64_t)sizeof(basist::basis_file_header) + (uint64_t)sizeof(basist::basis_slice_desc) * slice_descs.size() + - (uint64_t)encoder_output.m_slice_image_tables.size(); - } - if (check_size >= 0xFFFF0000ULL) - { - error_printf("basisu_file::init: File is too large!\n"); - return false; - } - - m_header_file_ofs = 0; - m_slice_descs_file_ofs = sizeof(basist::basis_file_header); - if (encoder_output.m_tex_format == basist::basis_tex_format::cETC1S) - { - if (encoder_output.m_uses_global_codebooks) - { - m_endpoint_cb_file_ofs = 0; - m_selector_cb_file_ofs = 0; - m_tables_file_ofs = m_slice_descs_file_ofs + sizeof(basist::basis_slice_desc) * (uint32_t)slice_descs.size(); - } - else - { - m_endpoint_cb_file_ofs = m_slice_descs_file_ofs + sizeof(basist::basis_slice_desc) * (uint32_t)slice_descs.size(); - m_selector_cb_file_ofs = m_endpoint_cb_file_ofs + (uint32_t)encoder_output.m_endpoint_palette.size(); - m_tables_file_ofs = m_selector_cb_file_ofs + (uint32_t)encoder_output.m_selector_palette.size(); - } - m_first_image_file_ofs = m_tables_file_ofs + (uint32_t)encoder_output.m_slice_image_tables.size(); - } - else - { - m_endpoint_cb_file_ofs = 0; - m_selector_cb_file_ofs = 0; - m_tables_file_ofs = 0; - m_first_image_file_ofs = m_slice_descs_file_ofs + sizeof(basist::basis_slice_desc) * (uint32_t)slice_descs.size(); - } - - uint64_t total_file_size = m_first_image_file_ofs; - for (uint32_t i = 0; i < encoder_output.m_slice_image_data.size(); i++) - total_file_size += encoder_output.m_slice_image_data[i].size(); - if (total_file_size >= 0xFFFF0000ULL) - { - error_printf("basisu_file::init: File is too large!\n"); - return false; - } - - m_total_file_size = (uint32_t)total_file_size; - - create_header(encoder_output, tex_type, userdata0, userdata1, y_flipped, us_per_frame); - - if (!create_image_descs(encoder_output)) - return false; - - create_comp_data(encoder_output); - - fixup_crcs(); - - return true; - } - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_basis_file.h b/WickedEngine/Utility/basis_universal/encoder/basisu_basis_file.h deleted file mode 100644 index 98498a012..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_basis_file.h +++ /dev/null @@ -1,70 +0,0 @@ -// basisu_basis_file.h -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "../transcoder/basisu_file_headers.h" -#include "basisu_backend.h" - -namespace basisu -{ - class basisu_file - { - BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(basisu_file); - - public: - basisu_file() - { - } - - void clear() - { - m_comp_data.clear(); - - clear_obj(m_header); - m_images_descs.clear(); - - m_header_file_ofs = 0; - m_slice_descs_file_ofs = 0; - m_endpoint_cb_file_ofs = 0; - m_selector_cb_file_ofs = 0; - m_tables_file_ofs = 0; - m_first_image_file_ofs = 0; - m_total_file_size = 0; - } - - bool init(const basisu_backend_output& encoder_output, basist::basis_texture_type tex_type, uint32_t userdata0, uint32_t userdata1, bool y_flipped, uint32_t us_per_frame); - - const uint8_vec &get_compressed_data() const { return m_comp_data; } - - private: - basist::basis_file_header m_header; - basisu::vector m_images_descs; - - uint8_vec m_comp_data; - - uint32_t m_header_file_ofs; - uint32_t m_slice_descs_file_ofs; - uint32_t m_endpoint_cb_file_ofs; - uint32_t m_selector_cb_file_ofs; - uint32_t m_tables_file_ofs; - uint32_t m_first_image_file_ofs; - uint32_t m_total_file_size; - - void create_header(const basisu_backend_output& encoder_output, basist::basis_texture_type tex_type, uint32_t userdata0, uint32_t userdata1, bool y_flipped, uint32_t us_per_frame); - bool create_image_descs(const basisu_backend_output& encoder_output); - void create_comp_data(const basisu_backend_output& encoder_output); - void fixup_crcs(); - }; - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_bc7enc.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_bc7enc.cpp deleted file mode 100644 index 22fdfa603..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_bc7enc.cpp +++ /dev/null @@ -1,1983 +0,0 @@ -// File: basisu_bc7enc.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_bc7enc.h" - -#ifdef _DEBUG -#define BC7ENC_CHECK_OVERALL_ERROR 1 -#else -#define BC7ENC_CHECK_OVERALL_ERROR 0 -#endif - -using namespace basist; - -namespace basisu -{ - -// Helpers -static inline color_quad_u8 *color_quad_u8_set_clamped(color_quad_u8 *pRes, int32_t r, int32_t g, int32_t b, int32_t a) { pRes->m_c[0] = (uint8_t)clampi(r, 0, 255); pRes->m_c[1] = (uint8_t)clampi(g, 0, 255); pRes->m_c[2] = (uint8_t)clampi(b, 0, 255); pRes->m_c[3] = (uint8_t)clampi(a, 0, 255); return pRes; } -static inline color_quad_u8 *color_quad_u8_set(color_quad_u8 *pRes, int32_t r, int32_t g, int32_t b, int32_t a) { assert((uint32_t)(r | g | b | a) <= 255); pRes->m_c[0] = (uint8_t)r; pRes->m_c[1] = (uint8_t)g; pRes->m_c[2] = (uint8_t)b; pRes->m_c[3] = (uint8_t)a; return pRes; } -static inline bc7enc_bool color_quad_u8_notequals(const color_quad_u8 *pLHS, const color_quad_u8 *pRHS) { return (pLHS->m_c[0] != pRHS->m_c[0]) || (pLHS->m_c[1] != pRHS->m_c[1]) || (pLHS->m_c[2] != pRHS->m_c[2]) || (pLHS->m_c[3] != pRHS->m_c[3]); } -static inline bc7enc_vec4F*vec4F_set_scalar(bc7enc_vec4F*pV, float x) { pV->m_c[0] = x; pV->m_c[1] = x; pV->m_c[2] = x; pV->m_c[3] = x; return pV; } -static inline bc7enc_vec4F*vec4F_set(bc7enc_vec4F*pV, float x, float y, float z, float w) { pV->m_c[0] = x; pV->m_c[1] = y; pV->m_c[2] = z; pV->m_c[3] = w; return pV; } -static inline bc7enc_vec4F*vec4F_saturate_in_place(bc7enc_vec4F*pV) { pV->m_c[0] = saturate(pV->m_c[0]); pV->m_c[1] = saturate(pV->m_c[1]); pV->m_c[2] = saturate(pV->m_c[2]); pV->m_c[3] = saturate(pV->m_c[3]); return pV; } -static inline bc7enc_vec4F vec4F_saturate(const bc7enc_vec4F*pV) { bc7enc_vec4F res; res.m_c[0] = saturate(pV->m_c[0]); res.m_c[1] = saturate(pV->m_c[1]); res.m_c[2] = saturate(pV->m_c[2]); res.m_c[3] = saturate(pV->m_c[3]); return res; } -static inline bc7enc_vec4F vec4F_from_color(const color_quad_u8 *pC) { bc7enc_vec4F res; vec4F_set(&res, pC->m_c[0], pC->m_c[1], pC->m_c[2], pC->m_c[3]); return res; } -static inline bc7enc_vec4F vec4F_add(const bc7enc_vec4F*pLHS, const bc7enc_vec4F*pRHS) { bc7enc_vec4F res; vec4F_set(&res, pLHS->m_c[0] + pRHS->m_c[0], pLHS->m_c[1] + pRHS->m_c[1], pLHS->m_c[2] + pRHS->m_c[2], pLHS->m_c[3] + pRHS->m_c[3]); return res; } -static inline bc7enc_vec4F vec4F_sub(const bc7enc_vec4F*pLHS, const bc7enc_vec4F*pRHS) { bc7enc_vec4F res; vec4F_set(&res, pLHS->m_c[0] - pRHS->m_c[0], pLHS->m_c[1] - pRHS->m_c[1], pLHS->m_c[2] - pRHS->m_c[2], pLHS->m_c[3] - pRHS->m_c[3]); return res; } -static inline float vec4F_dot(const bc7enc_vec4F*pLHS, const bc7enc_vec4F*pRHS) { return pLHS->m_c[0] * pRHS->m_c[0] + pLHS->m_c[1] * pRHS->m_c[1] + pLHS->m_c[2] * pRHS->m_c[2] + pLHS->m_c[3] * pRHS->m_c[3]; } -static inline bc7enc_vec4F vec4F_mul(const bc7enc_vec4F*pLHS, float s) { bc7enc_vec4F res; vec4F_set(&res, pLHS->m_c[0] * s, pLHS->m_c[1] * s, pLHS->m_c[2] * s, pLHS->m_c[3] * s); return res; } -static inline bc7enc_vec4F* vec4F_normalize_in_place(bc7enc_vec4F*pV) { float s = pV->m_c[0] * pV->m_c[0] + pV->m_c[1] * pV->m_c[1] + pV->m_c[2] * pV->m_c[2] + pV->m_c[3] * pV->m_c[3]; if (s != 0.0f) { s = 1.0f / sqrtf(s); pV->m_c[0] *= s; pV->m_c[1] *= s; pV->m_c[2] *= s; pV->m_c[3] *= s; } return pV; } - -// Precomputed weight constants used during least fit determination. For each entry in g_bc7_weights[]: w * w, (1.0f - w) * w, (1.0f - w) * (1.0f - w), w -const float g_bc7_weights1x[2 * 4] = { 0.000000f, 0.000000f, 1.000000f, 0.000000f, 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -const float g_bc7_weights2x[4 * 4] = { 0.000000f, 0.000000f, 1.000000f, 0.000000f, 0.107666f, 0.220459f, 0.451416f, 0.328125f, 0.451416f, 0.220459f, 0.107666f, 0.671875f, 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -const float g_bc7_weights3x[8 * 4] = { 0.000000f, 0.000000f, 1.000000f, 0.000000f, 0.019775f, 0.120850f, 0.738525f, 0.140625f, 0.079102f, 0.202148f, 0.516602f, 0.281250f, 0.177979f, 0.243896f, 0.334229f, 0.421875f, 0.334229f, 0.243896f, 0.177979f, 0.578125f, 0.516602f, 0.202148f, - 0.079102f, 0.718750f, 0.738525f, 0.120850f, 0.019775f, 0.859375f, 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -const float g_bc7_weights4x[16 * 4] = { 0.000000f, 0.000000f, 1.000000f, 0.000000f, 0.003906f, 0.058594f, 0.878906f, 0.062500f, 0.019775f, 0.120850f, 0.738525f, 0.140625f, 0.041260f, 0.161865f, 0.635010f, 0.203125f, 0.070557f, 0.195068f, 0.539307f, 0.265625f, 0.107666f, 0.220459f, - 0.451416f, 0.328125f, 0.165039f, 0.241211f, 0.352539f, 0.406250f, 0.219727f, 0.249023f, 0.282227f, 0.468750f, 0.282227f, 0.249023f, 0.219727f, 0.531250f, 0.352539f, 0.241211f, 0.165039f, 0.593750f, 0.451416f, 0.220459f, 0.107666f, 0.671875f, 0.539307f, 0.195068f, 0.070557f, 0.734375f, - 0.635010f, 0.161865f, 0.041260f, 0.796875f, 0.738525f, 0.120850f, 0.019775f, 0.859375f, 0.878906f, 0.058594f, 0.003906f, 0.937500f, 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -const float g_astc_weights4x[16 * 4] = { 0.000000f, 0.000000f, 1.000000f, 0.000000f, 0.003906f, 0.058594f, 0.878906f, 0.062500f, 0.015625f, 0.109375f, 0.765625f, 0.125000f, 0.035156f, 0.152344f, 0.660156f, 0.187500f, 0.070557f, 0.195068f, 0.539307f, 0.265625f, 0.107666f, 0.220459f, - 0.451416f, 0.328125f, 0.152588f, 0.238037f, 0.371338f, 0.390625f, 0.205322f, 0.247803f, 0.299072f, 0.453125f, 0.299072f, 0.247803f, 0.205322f, 0.546875f, 0.371338f, 0.238037f, 0.152588f, 0.609375f, 0.451416f, 0.220459f, 0.107666f, 0.671875f, 0.539307f, 0.195068f, 0.070557f, 0.734375f, - 0.660156f, 0.152344f, 0.035156f, 0.812500f, 0.765625f, 0.109375f, 0.015625f, 0.875000f, 0.878906f, 0.058594f, 0.003906f, 0.937500f, 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -const float g_astc_weights5x[32 * 4] = { 0.000000f, 0.000000f, 1.000000f, 0.000000f, 0.000977f, 0.030273f, 0.938477f, 0.031250f, 0.003906f, 0.058594f, 0.878906f, 0.062500f, 0.008789f, 0.084961f, 0.821289f, - 0.093750f, 0.015625f, 0.109375f, 0.765625f, 0.125000f, 0.024414f, 0.131836f, 0.711914f, 0.156250f, 0.035156f, 0.152344f, 0.660156f, 0.187500f, 0.047852f, 0.170898f, 0.610352f, 0.218750f, 0.062500f, 0.187500f, - 0.562500f, 0.250000f, 0.079102f, 0.202148f, 0.516602f, 0.281250f, 0.097656f, 0.214844f, 0.472656f, 0.312500f, 0.118164f, 0.225586f, 0.430664f, 0.343750f, 0.140625f, 0.234375f, 0.390625f, 0.375000f, 0.165039f, - 0.241211f, 0.352539f, 0.406250f, 0.191406f, 0.246094f, 0.316406f, 0.437500f, 0.219727f, 0.249023f, 0.282227f, 0.468750f, 0.282227f, 0.249023f, 0.219727f, 0.531250f, 0.316406f, 0.246094f, 0.191406f, 0.562500f, - 0.352539f, 0.241211f, 0.165039f, 0.593750f, 0.390625f, 0.234375f, 0.140625f, 0.625000f, 0.430664f, 0.225586f, 0.118164f, 0.656250f, 0.472656f, 0.214844f, 0.097656f, 0.687500f, 0.516602f, 0.202148f, 0.079102f, - 0.718750f, 0.562500f, 0.187500f, 0.062500f, 0.750000f, 0.610352f, 0.170898f, 0.047852f, 0.781250f, 0.660156f, 0.152344f, 0.035156f, 0.812500f, 0.711914f, 0.131836f, 0.024414f, 0.843750f, 0.765625f, 0.109375f, - 0.015625f, 0.875000f, 0.821289f, 0.084961f, 0.008789f, 0.906250f, 0.878906f, 0.058594f, 0.003906f, 0.937500f, 0.938477f, 0.030273f, 0.000977f, 0.968750f, 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -const float g_astc_weights_3levelsx[3 * 4] = { - 0.000000f, 0.000000f, 1.000000f, 0.000000f, - .5f * .5f, (1.0f - .5f) * .5f, (1.0f - .5f) * (1.0f - .5f), .5f, - 1.000000f, 0.000000f, 0.000000f, 1.000000f }; - -static endpoint_err g_bc7_mode_1_optimal_endpoints[256][2]; // [c][pbit] -static const uint32_t BC7ENC_MODE_1_OPTIMAL_INDEX = 2; - -static endpoint_err g_astc_4bit_3bit_optimal_endpoints[256]; // [c] -static const uint32_t BC7ENC_ASTC_4BIT_3BIT_OPTIMAL_INDEX = 2; - -static endpoint_err g_astc_4bit_2bit_optimal_endpoints[256]; // [c] -static const uint32_t BC7ENC_ASTC_4BIT_2BIT_OPTIMAL_INDEX = 1; - -static endpoint_err g_astc_range7_2bit_optimal_endpoints[256]; // [c] -static const uint32_t BC7ENC_ASTC_RANGE7_2BIT_OPTIMAL_INDEX = 1; - -static endpoint_err g_astc_range13_4bit_optimal_endpoints[256]; // [c] -static const uint32_t BC7ENC_ASTC_RANGE13_4BIT_OPTIMAL_INDEX = 2; - -static endpoint_err g_astc_range13_2bit_optimal_endpoints[256]; // [c] -static const uint32_t BC7ENC_ASTC_RANGE13_2BIT_OPTIMAL_INDEX = 1; - -static endpoint_err g_astc_range11_5bit_optimal_endpoints[256]; // [c] -static const uint32_t BC7ENC_ASTC_RANGE11_5BIT_OPTIMAL_INDEX = 13; // not 1, which is optimal, because 26 losslessly maps to BC7 4-bit weights - -astc_quant_bin g_astc_sorted_order_unquant[BC7ENC_TOTAL_ASTC_RANGES][256]; // [sorted unquantized order] - -static uint8_t g_astc_nearest_sorted_index[BC7ENC_TOTAL_ASTC_RANGES][256]; - -static void astc_init() -{ - for (uint32_t range = 0; range < BC7ENC_TOTAL_ASTC_RANGES; range++) - { - if (!astc_is_valid_endpoint_range(range)) - continue; - - const uint32_t levels = astc_get_levels(range); - - uint32_t vals[256]; - // TODO - for (uint32_t i = 0; i < levels; i++) - vals[i] = (unquant_astc_endpoint_val(i, range) << 8) | i; - - std::sort(vals, vals + levels); - - for (uint32_t i = 0; i < levels; i++) - { - uint32_t order = vals[i] & 0xFF; - uint32_t unq = vals[i] >> 8; - - g_astc_sorted_order_unquant[range][i].m_unquant = (uint8_t)unq; - g_astc_sorted_order_unquant[range][i].m_index = (uint8_t)order; - - } // i - -#if 0 - if (g_astc_bise_range_table[range][1] || g_astc_bise_range_table[range][2]) - { - printf("// Range: %u, Levels: %u, Bits: %u, Trits: %u, Quints: %u\n", range, levels, g_astc_bise_range_table[range][0], g_astc_bise_range_table[range][1], g_astc_bise_range_table[range][2]); - - printf("{"); - for (uint32_t i = 0; i < levels; i++) - { - printf("{%u,%u}", g_astc_sorted_order_unquant[range][i].m_index, g_astc_sorted_order_unquant[range][i].m_unquant); - if (i != (levels - 1)) - printf(","); - } - printf("}\n"); - } -#endif - -#if 0 - if (g_astc_bise_range_table[range][1] || g_astc_bise_range_table[range][2]) - { - printf("// Range: %u, Levels: %u, Bits: %u, Trits: %u, Quints: %u\n", range, levels, g_astc_bise_range_table[range][0], g_astc_bise_range_table[range][1], g_astc_bise_range_table[range][2]); - - printf("{"); - for (uint32_t i = 0; i < levels; i++) - { - printf("{%u,%u}", g_astc_unquant[range][i].m_index, g_astc_unquant[range][i].m_unquant); - if (i != (levels - 1)) - printf(","); - } - printf("}\n"); - } -#endif - - for (uint32_t i = 0; i < 256; i++) - { - uint32_t best_index = 0; - int best_err = INT32_MAX; - - for (uint32_t j = 0; j < levels; j++) - { - int err = g_astc_sorted_order_unquant[range][j].m_unquant - i; - if (err < 0) - err = -err; - if (err < best_err) - { - best_err = err; - best_index = j; - } - } - - g_astc_nearest_sorted_index[range][i] = (uint8_t)best_index; - } // i - } // range -} - -static inline uint32_t astc_interpolate_linear(uint32_t l, uint32_t h, uint32_t w) -{ - l = (l << 8) | l; - h = (h << 8) | h; - uint32_t k = (l * (64 - w) + h * w + 32) >> 6; - return k >> 8; -} - -// Initialize the lookup table used for optimal single color compression in mode 1. Must be called before encoding. -void bc7enc_compress_block_init() -{ - astc_init(); - - // BC7 666.1 - for (int c = 0; c < 256; c++) - { - for (uint32_t lp = 0; lp < 2; lp++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 64; l++) - { - uint32_t low = ((l << 1) | lp) << 1; - low |= (low >> 7); - for (uint32_t h = 0; h < 64; h++) - { - uint32_t high = ((h << 1) | lp) << 1; - high |= (high >> 7); - const int k = (low * (64 - g_bc7_weights3[BC7ENC_MODE_1_OPTIMAL_INDEX]) + high * g_bc7_weights3[BC7ENC_MODE_1_OPTIMAL_INDEX] + 32) >> 6; - const int err = (k - c) * (k - c); - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - g_bc7_mode_1_optimal_endpoints[c][lp] = best; - } // lp - } // c - - // ASTC [0,15] 3-bit - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 16; l++) - { - uint32_t low = (l << 4) | l; - - for (uint32_t h = 0; h < 16; h++) - { - uint32_t high = (h << 4) | h; - - const int k = astc_interpolate_linear(low, high, g_bc7_weights3[BC7ENC_ASTC_4BIT_3BIT_OPTIMAL_INDEX]); - const int err = (k - c) * (k - c); - - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_astc_4bit_3bit_optimal_endpoints[c] = best; - - } // c - - // ASTC [0,15] 2-bit - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 16; l++) - { - uint32_t low = (l << 4) | l; - - for (uint32_t h = 0; h < 16; h++) - { - uint32_t high = (h << 4) | h; - - const int k = astc_interpolate_linear(low, high, g_bc7_weights2[BC7ENC_ASTC_4BIT_2BIT_OPTIMAL_INDEX]); - const int err = (k - c) * (k - c); - - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_astc_4bit_2bit_optimal_endpoints[c] = best; - - } // c - - // ASTC range 7 [0,11] 2-bit - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 12; l++) - { - uint32_t low = g_astc_sorted_order_unquant[7][l].m_unquant; - - for (uint32_t h = 0; h < 12; h++) - { - uint32_t high = g_astc_sorted_order_unquant[7][h].m_unquant; - - const int k = astc_interpolate_linear(low, high, g_bc7_weights2[BC7ENC_ASTC_RANGE7_2BIT_OPTIMAL_INDEX]); - const int err = (k - c) * (k - c); - - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_astc_range7_2bit_optimal_endpoints[c] = best; - - } // c - - // ASTC range 13 [0,47] 4-bit - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 48; l++) - { - uint32_t low = g_astc_sorted_order_unquant[13][l].m_unquant; - - for (uint32_t h = 0; h < 48; h++) - { - uint32_t high = g_astc_sorted_order_unquant[13][h].m_unquant; - - const int k = astc_interpolate_linear(low, high, g_astc_weights4[BC7ENC_ASTC_RANGE13_4BIT_OPTIMAL_INDEX]); - const int err = (k - c) * (k - c); - - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_astc_range13_4bit_optimal_endpoints[c] = best; - - } // c - - // ASTC range 13 [0,47] 2-bit - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 48; l++) - { - uint32_t low = g_astc_sorted_order_unquant[13][l].m_unquant; - - for (uint32_t h = 0; h < 48; h++) - { - uint32_t high = g_astc_sorted_order_unquant[13][h].m_unquant; - - const int k = astc_interpolate_linear(low, high, g_bc7_weights2[BC7ENC_ASTC_RANGE13_2BIT_OPTIMAL_INDEX]); - const int err = (k - c) * (k - c); - - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_astc_range13_2bit_optimal_endpoints[c] = best; - - } // c - - // ASTC range 11 [0,31] 5-bit - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - for (uint32_t l = 0; l < 32; l++) - { - uint32_t low = g_astc_sorted_order_unquant[11][l].m_unquant; - - for (uint32_t h = 0; h < 32; h++) - { - uint32_t high = g_astc_sorted_order_unquant[11][h].m_unquant; - - const int k = astc_interpolate_linear(low, high, g_astc_weights5[BC7ENC_ASTC_RANGE11_5BIT_OPTIMAL_INDEX]); - const int err = (k - c) * (k - c); - - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_astc_range11_5bit_optimal_endpoints[c] = best; - - } // c -} - -static void compute_least_squares_endpoints_rgba(uint32_t N, const uint8_t *pSelectors, const bc7enc_vec4F* pSelector_weights, bc7enc_vec4F* pXl, bc7enc_vec4F* pXh, const color_quad_u8 *pColors) -{ - // Least squares using normal equations: http://www.cs.cornell.edu/~bindel/class/cs3220-s12/notes/lec10.pdf - // I did this in matrix form first, expanded out all the ops, then optimized it a bit. - double z00 = 0.0f, z01 = 0.0f, z10 = 0.0f, z11 = 0.0f; - double q00_r = 0.0f, q10_r = 0.0f, t_r = 0.0f; - double q00_g = 0.0f, q10_g = 0.0f, t_g = 0.0f; - double q00_b = 0.0f, q10_b = 0.0f, t_b = 0.0f; - double q00_a = 0.0f, q10_a = 0.0f, t_a = 0.0f; - - for (uint32_t i = 0; i < N; i++) - { - const uint32_t sel = pSelectors[i]; - z00 += pSelector_weights[sel].m_c[0]; - z10 += pSelector_weights[sel].m_c[1]; - z11 += pSelector_weights[sel].m_c[2]; - float w = pSelector_weights[sel].m_c[3]; - q00_r += w * pColors[i].m_c[0]; t_r += pColors[i].m_c[0]; - q00_g += w * pColors[i].m_c[1]; t_g += pColors[i].m_c[1]; - q00_b += w * pColors[i].m_c[2]; t_b += pColors[i].m_c[2]; - q00_a += w * pColors[i].m_c[3]; t_a += pColors[i].m_c[3]; - } - - q10_r = t_r - q00_r; - q10_g = t_g - q00_g; - q10_b = t_b - q00_b; - q10_a = t_a - q00_a; - - z01 = z10; - - double det = z00 * z11 - z01 * z10; - if (det != 0.0f) - det = 1.0f / det; - - double iz00, iz01, iz10, iz11; - iz00 = z11 * det; - iz01 = -z01 * det; - iz10 = -z10 * det; - iz11 = z00 * det; - - pXl->m_c[0] = (float)(iz00 * q00_r + iz01 * q10_r); pXh->m_c[0] = (float)(iz10 * q00_r + iz11 * q10_r); - pXl->m_c[1] = (float)(iz00 * q00_g + iz01 * q10_g); pXh->m_c[1] = (float)(iz10 * q00_g + iz11 * q10_g); - pXl->m_c[2] = (float)(iz00 * q00_b + iz01 * q10_b); pXh->m_c[2] = (float)(iz10 * q00_b + iz11 * q10_b); - pXl->m_c[3] = (float)(iz00 * q00_a + iz01 * q10_a); pXh->m_c[3] = (float)(iz10 * q00_a + iz11 * q10_a); - - for (uint32_t c = 0; c < 4; c++) - { - if ((pXl->m_c[c] < 0.0f) || (pXh->m_c[c] > 255.0f)) - { - uint32_t lo_v = UINT32_MAX, hi_v = 0; - for (uint32_t i = 0; i < N; i++) - { - lo_v = minimumu(lo_v, pColors[i].m_c[c]); - hi_v = maximumu(hi_v, pColors[i].m_c[c]); - } - - if (lo_v == hi_v) - { - pXl->m_c[c] = (float)lo_v; - pXh->m_c[c] = (float)hi_v; - } - } - } -} - -static void compute_least_squares_endpoints_rgb(uint32_t N, const uint8_t *pSelectors, const bc7enc_vec4F*pSelector_weights, bc7enc_vec4F*pXl, bc7enc_vec4F*pXh, const color_quad_u8 *pColors) -{ - double z00 = 0.0f, z01 = 0.0f, z10 = 0.0f, z11 = 0.0f; - double q00_r = 0.0f, q10_r = 0.0f, t_r = 0.0f; - double q00_g = 0.0f, q10_g = 0.0f, t_g = 0.0f; - double q00_b = 0.0f, q10_b = 0.0f, t_b = 0.0f; - - for (uint32_t i = 0; i < N; i++) - { - const uint32_t sel = pSelectors[i]; - z00 += pSelector_weights[sel].m_c[0]; - z10 += pSelector_weights[sel].m_c[1]; - z11 += pSelector_weights[sel].m_c[2]; - float w = pSelector_weights[sel].m_c[3]; - q00_r += w * pColors[i].m_c[0]; t_r += pColors[i].m_c[0]; - q00_g += w * pColors[i].m_c[1]; t_g += pColors[i].m_c[1]; - q00_b += w * pColors[i].m_c[2]; t_b += pColors[i].m_c[2]; - } - - q10_r = t_r - q00_r; - q10_g = t_g - q00_g; - q10_b = t_b - q00_b; - - z01 = z10; - - double det = z00 * z11 - z01 * z10; - if (det != 0.0f) - det = 1.0f / det; - - double iz00, iz01, iz10, iz11; - iz00 = z11 * det; - iz01 = -z01 * det; - iz10 = -z10 * det; - iz11 = z00 * det; - - pXl->m_c[0] = (float)(iz00 * q00_r + iz01 * q10_r); pXh->m_c[0] = (float)(iz10 * q00_r + iz11 * q10_r); - pXl->m_c[1] = (float)(iz00 * q00_g + iz01 * q10_g); pXh->m_c[1] = (float)(iz10 * q00_g + iz11 * q10_g); - pXl->m_c[2] = (float)(iz00 * q00_b + iz01 * q10_b); pXh->m_c[2] = (float)(iz10 * q00_b + iz11 * q10_b); - pXl->m_c[3] = 255.0f; pXh->m_c[3] = 255.0f; - - for (uint32_t c = 0; c < 3; c++) - { - if ((pXl->m_c[c] < 0.0f) || (pXh->m_c[c] > 255.0f)) - { - uint32_t lo_v = UINT32_MAX, hi_v = 0; - for (uint32_t i = 0; i < N; i++) - { - lo_v = minimumu(lo_v, pColors[i].m_c[c]); - hi_v = maximumu(hi_v, pColors[i].m_c[c]); - } - - if (lo_v == hi_v) - { - pXl->m_c[c] = (float)lo_v; - pXh->m_c[c] = (float)hi_v; - } - } - } -} - -static inline color_quad_u8 scale_color(const color_quad_u8* pC, const color_cell_compressor_params* pParams) -{ - color_quad_u8 results; - - if (pParams->m_astc_endpoint_range) - { - for (uint32_t i = 0; i < 4; i++) - { - results.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pC->m_c[i]].m_unquant; - } - } - else - { - const uint32_t n = pParams->m_comp_bits + (pParams->m_has_pbits ? 1 : 0); - assert((n >= 4) && (n <= 8)); - - for (uint32_t i = 0; i < 4; i++) - { - uint32_t v = pC->m_c[i] << (8 - n); - v |= (v >> n); - assert(v <= 255); - results.m_c[i] = (uint8_t)(v); - } - } - - return results; -} - -static inline uint64_t compute_color_distance_rgb(const color_quad_u8 *pE1, const color_quad_u8 *pE2, bc7enc_bool perceptual, const uint32_t weights[4]) -{ - int dr, dg, db; - - if (perceptual) - { - const int l1 = pE1->m_c[0] * 109 + pE1->m_c[1] * 366 + pE1->m_c[2] * 37; - const int cr1 = ((int)pE1->m_c[0] << 9) - l1; - const int cb1 = ((int)pE1->m_c[2] << 9) - l1; - const int l2 = pE2->m_c[0] * 109 + pE2->m_c[1] * 366 + pE2->m_c[2] * 37; - const int cr2 = ((int)pE2->m_c[0] << 9) - l2; - const int cb2 = ((int)pE2->m_c[2] << 9) - l2; - dr = (l1 - l2) >> 8; - dg = (cr1 - cr2) >> 8; - db = (cb1 - cb2) >> 8; - } - else - { - dr = (int)pE1->m_c[0] - (int)pE2->m_c[0]; - dg = (int)pE1->m_c[1] - (int)pE2->m_c[1]; - db = (int)pE1->m_c[2] - (int)pE2->m_c[2]; - } - - return weights[0] * (uint32_t)(dr * dr) + weights[1] * (uint32_t)(dg * dg) + weights[2] * (uint32_t)(db * db); -} - -static inline uint64_t compute_color_distance_rgba(const color_quad_u8 *pE1, const color_quad_u8 *pE2, bc7enc_bool perceptual, const uint32_t weights[4]) -{ - int da = (int)pE1->m_c[3] - (int)pE2->m_c[3]; - return compute_color_distance_rgb(pE1, pE2, perceptual, weights) + (weights[3] * (uint32_t)(da * da)); -} - -static uint64_t pack_mode1_to_one_color(const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults, uint32_t r, uint32_t g, uint32_t b, uint8_t *pSelectors) -{ - uint32_t best_err = UINT_MAX; - uint32_t best_p = 0; - - for (uint32_t p = 0; p < 2; p++) - { - uint32_t err = g_bc7_mode_1_optimal_endpoints[r][p].m_error + g_bc7_mode_1_optimal_endpoints[g][p].m_error + g_bc7_mode_1_optimal_endpoints[b][p].m_error; - if (err < best_err) - { - best_err = err; - best_p = p; - } - } - - const endpoint_err *pEr = &g_bc7_mode_1_optimal_endpoints[r][best_p]; - const endpoint_err *pEg = &g_bc7_mode_1_optimal_endpoints[g][best_p]; - const endpoint_err *pEb = &g_bc7_mode_1_optimal_endpoints[b][best_p]; - - color_quad_u8_set(&pResults->m_low_endpoint, pEr->m_lo, pEg->m_lo, pEb->m_lo, 0); - color_quad_u8_set(&pResults->m_high_endpoint, pEr->m_hi, pEg->m_hi, pEb->m_hi, 0); - pResults->m_pbits[0] = best_p; - pResults->m_pbits[1] = 0; - - memset(pSelectors, BC7ENC_MODE_1_OPTIMAL_INDEX, pParams->m_num_pixels); - - color_quad_u8 p; - for (uint32_t i = 0; i < 3; i++) - { - uint32_t low = ((pResults->m_low_endpoint.m_c[i] << 1) | pResults->m_pbits[0]) << 1; - low |= (low >> 7); - - uint32_t high = ((pResults->m_high_endpoint.m_c[i] << 1) | pResults->m_pbits[0]) << 1; - high |= (high >> 7); - - p.m_c[i] = (uint8_t)((low * (64 - g_bc7_weights3[BC7ENC_MODE_1_OPTIMAL_INDEX]) + high * g_bc7_weights3[BC7ENC_MODE_1_OPTIMAL_INDEX] + 32) >> 6); - } - p.m_c[3] = 255; - - uint64_t total_err = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - total_err += compute_color_distance_rgb(&p, &pParams->m_pPixels[i], pParams->m_perceptual, pParams->m_weights); - - pResults->m_best_overall_err = total_err; - - return total_err; -} - -static uint64_t pack_astc_4bit_3bit_to_one_color(const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults, uint32_t r, uint32_t g, uint32_t b, uint8_t *pSelectors) -{ - const endpoint_err *pEr = &g_astc_4bit_3bit_optimal_endpoints[r]; - const endpoint_err *pEg = &g_astc_4bit_3bit_optimal_endpoints[g]; - const endpoint_err *pEb = &g_astc_4bit_3bit_optimal_endpoints[b]; - - color_quad_u8_set(&pResults->m_low_endpoint, pEr->m_lo, pEg->m_lo, pEb->m_lo, 0); - color_quad_u8_set(&pResults->m_high_endpoint, pEr->m_hi, pEg->m_hi, pEb->m_hi, 0); - pResults->m_pbits[0] = 0; - pResults->m_pbits[1] = 0; - - for (uint32_t i = 0; i < 4; i++) - { - pResults->m_astc_low_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[i]].m_index; - pResults->m_astc_high_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[i]].m_index; - } - - memset(pSelectors, BC7ENC_ASTC_4BIT_3BIT_OPTIMAL_INDEX, pParams->m_num_pixels); - - color_quad_u8 p; - for (uint32_t i = 0; i < 3; i++) - { - uint32_t low = (pResults->m_low_endpoint.m_c[i] << 4) | pResults->m_low_endpoint.m_c[i]; - uint32_t high = (pResults->m_high_endpoint.m_c[i] << 4) | pResults->m_high_endpoint.m_c[i]; - - p.m_c[i] = (uint8_t)astc_interpolate_linear(low, high, g_bc7_weights3[BC7ENC_ASTC_4BIT_3BIT_OPTIMAL_INDEX]); - } - p.m_c[3] = 255; - - uint64_t total_err = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - total_err += compute_color_distance_rgb(&p, &pParams->m_pPixels[i], pParams->m_perceptual, pParams->m_weights); - - pResults->m_best_overall_err = total_err; - - return total_err; -} - -static uint64_t pack_astc_4bit_2bit_to_one_color_rgba(const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults, uint32_t r, uint32_t g, uint32_t b, uint32_t a, uint8_t *pSelectors) -{ - const endpoint_err *pEr = &g_astc_4bit_2bit_optimal_endpoints[r]; - const endpoint_err *pEg = &g_astc_4bit_2bit_optimal_endpoints[g]; - const endpoint_err *pEb = &g_astc_4bit_2bit_optimal_endpoints[b]; - const endpoint_err *pEa = &g_astc_4bit_2bit_optimal_endpoints[a]; - - color_quad_u8_set(&pResults->m_low_endpoint, pEr->m_lo, pEg->m_lo, pEb->m_lo, pEa->m_lo); - color_quad_u8_set(&pResults->m_high_endpoint, pEr->m_hi, pEg->m_hi, pEb->m_hi, pEa->m_hi); - pResults->m_pbits[0] = 0; - pResults->m_pbits[1] = 0; - - for (uint32_t i = 0; i < 4; i++) - { - pResults->m_astc_low_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[i]].m_index; - pResults->m_astc_high_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[i]].m_index; - } - - memset(pSelectors, BC7ENC_ASTC_4BIT_2BIT_OPTIMAL_INDEX, pParams->m_num_pixels); - - color_quad_u8 p; - for (uint32_t i = 0; i < 4; i++) - { - uint32_t low = (pResults->m_low_endpoint.m_c[i] << 4) | pResults->m_low_endpoint.m_c[i]; - uint32_t high = (pResults->m_high_endpoint.m_c[i] << 4) | pResults->m_high_endpoint.m_c[i]; - - p.m_c[i] = (uint8_t)astc_interpolate_linear(low, high, g_bc7_weights2[BC7ENC_ASTC_4BIT_2BIT_OPTIMAL_INDEX]); - } - - uint64_t total_err = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - total_err += compute_color_distance_rgba(&p, &pParams->m_pPixels[i], pParams->m_perceptual, pParams->m_weights); - - pResults->m_best_overall_err = total_err; - - return total_err; -} - -static uint64_t pack_astc_range7_2bit_to_one_color(const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults, uint32_t r, uint32_t g, uint32_t b, uint8_t *pSelectors) -{ - assert(pParams->m_astc_endpoint_range == 7 && pParams->m_num_selector_weights == 4); - - const endpoint_err *pEr = &g_astc_range7_2bit_optimal_endpoints[r]; - const endpoint_err *pEg = &g_astc_range7_2bit_optimal_endpoints[g]; - const endpoint_err *pEb = &g_astc_range7_2bit_optimal_endpoints[b]; - - color_quad_u8_set(&pResults->m_low_endpoint, pEr->m_lo, pEg->m_lo, pEb->m_lo, 0); - color_quad_u8_set(&pResults->m_high_endpoint, pEr->m_hi, pEg->m_hi, pEb->m_hi, 0); - pResults->m_pbits[0] = 0; - pResults->m_pbits[1] = 0; - - for (uint32_t i = 0; i < 4; i++) - { - pResults->m_astc_low_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[i]].m_index; - pResults->m_astc_high_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[i]].m_index; - } - - memset(pSelectors, BC7ENC_ASTC_RANGE7_2BIT_OPTIMAL_INDEX, pParams->m_num_pixels); - - color_quad_u8 p; - for (uint32_t i = 0; i < 3; i++) - { - uint32_t low = g_astc_sorted_order_unquant[7][pResults->m_low_endpoint.m_c[i]].m_unquant; - uint32_t high = g_astc_sorted_order_unquant[7][pResults->m_high_endpoint.m_c[i]].m_unquant; - - p.m_c[i] = (uint8_t)astc_interpolate_linear(low, high, g_bc7_weights2[BC7ENC_ASTC_RANGE7_2BIT_OPTIMAL_INDEX]); - } - p.m_c[3] = 255; - - uint64_t total_err = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - total_err += compute_color_distance_rgb(&p, &pParams->m_pPixels[i], pParams->m_perceptual, pParams->m_weights); - - pResults->m_best_overall_err = total_err; - - return total_err; -} - -static uint64_t pack_astc_range13_2bit_to_one_color(const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults, uint32_t r, uint32_t g, uint32_t b, uint8_t *pSelectors) -{ - assert(pParams->m_astc_endpoint_range == 13 && pParams->m_num_selector_weights == 4 && !pParams->m_has_alpha); - - const endpoint_err *pEr = &g_astc_range13_2bit_optimal_endpoints[r]; - const endpoint_err *pEg = &g_astc_range13_2bit_optimal_endpoints[g]; - const endpoint_err *pEb = &g_astc_range13_2bit_optimal_endpoints[b]; - - color_quad_u8_set(&pResults->m_low_endpoint, pEr->m_lo, pEg->m_lo, pEb->m_lo, 47); - color_quad_u8_set(&pResults->m_high_endpoint, pEr->m_hi, pEg->m_hi, pEb->m_hi, 47); - pResults->m_pbits[0] = 0; - pResults->m_pbits[1] = 0; - - for (uint32_t i = 0; i < 4; i++) - { - pResults->m_astc_low_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[i]].m_index; - pResults->m_astc_high_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[i]].m_index; - } - - memset(pSelectors, BC7ENC_ASTC_RANGE13_2BIT_OPTIMAL_INDEX, pParams->m_num_pixels); - - color_quad_u8 p; - for (uint32_t i = 0; i < 4; i++) - { - uint32_t low = g_astc_sorted_order_unquant[13][pResults->m_low_endpoint.m_c[i]].m_unquant; - uint32_t high = g_astc_sorted_order_unquant[13][pResults->m_high_endpoint.m_c[i]].m_unquant; - - p.m_c[i] = (uint8_t)astc_interpolate_linear(low, high, g_bc7_weights2[BC7ENC_ASTC_RANGE13_2BIT_OPTIMAL_INDEX]); - } - - uint64_t total_err = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - total_err += compute_color_distance_rgb(&p, &pParams->m_pPixels[i], pParams->m_perceptual, pParams->m_weights); - - pResults->m_best_overall_err = total_err; - - return total_err; -} - -static uint64_t pack_astc_range11_5bit_to_one_color(const color_cell_compressor_params* pParams, color_cell_compressor_results* pResults, uint32_t r, uint32_t g, uint32_t b, uint8_t* pSelectors) -{ - assert(pParams->m_astc_endpoint_range == 11 && pParams->m_num_selector_weights == 32 && !pParams->m_has_alpha); - - const endpoint_err* pEr = &g_astc_range11_5bit_optimal_endpoints[r]; - const endpoint_err* pEg = &g_astc_range11_5bit_optimal_endpoints[g]; - const endpoint_err* pEb = &g_astc_range11_5bit_optimal_endpoints[b]; - - color_quad_u8_set(&pResults->m_low_endpoint, pEr->m_lo, pEg->m_lo, pEb->m_lo, 31); - color_quad_u8_set(&pResults->m_high_endpoint, pEr->m_hi, pEg->m_hi, pEb->m_hi, 31); - pResults->m_pbits[0] = 0; - pResults->m_pbits[1] = 0; - - for (uint32_t i = 0; i < 4; i++) - { - pResults->m_astc_low_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[i]].m_index; - pResults->m_astc_high_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[i]].m_index; - } - - memset(pSelectors, BC7ENC_ASTC_RANGE11_5BIT_OPTIMAL_INDEX, pParams->m_num_pixels); - - color_quad_u8 p; - for (uint32_t i = 0; i < 4; i++) - { - uint32_t low = g_astc_sorted_order_unquant[11][pResults->m_low_endpoint.m_c[i]].m_unquant; - uint32_t high = g_astc_sorted_order_unquant[11][pResults->m_high_endpoint.m_c[i]].m_unquant; - - p.m_c[i] = (uint8_t)astc_interpolate_linear(low, high, g_astc_weights5[BC7ENC_ASTC_RANGE11_5BIT_OPTIMAL_INDEX]); - } - - uint64_t total_err = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - total_err += compute_color_distance_rgb(&p, &pParams->m_pPixels[i], pParams->m_perceptual, pParams->m_weights); - - pResults->m_best_overall_err = total_err; - - return total_err; -} - -static uint64_t evaluate_solution(const color_quad_u8 *pLow, const color_quad_u8 *pHigh, const uint32_t pbits[2], const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults) -{ - color_quad_u8 quantMinColor = *pLow; - color_quad_u8 quantMaxColor = *pHigh; - - if (pParams->m_has_pbits) - { - uint32_t minPBit, maxPBit; - - if (pParams->m_endpoints_share_pbit) - maxPBit = minPBit = pbits[0]; - else - { - minPBit = pbits[0]; - maxPBit = pbits[1]; - } - - quantMinColor.m_c[0] = (uint8_t)((pLow->m_c[0] << 1) | minPBit); - quantMinColor.m_c[1] = (uint8_t)((pLow->m_c[1] << 1) | minPBit); - quantMinColor.m_c[2] = (uint8_t)((pLow->m_c[2] << 1) | minPBit); - quantMinColor.m_c[3] = (uint8_t)((pLow->m_c[3] << 1) | minPBit); - - quantMaxColor.m_c[0] = (uint8_t)((pHigh->m_c[0] << 1) | maxPBit); - quantMaxColor.m_c[1] = (uint8_t)((pHigh->m_c[1] << 1) | maxPBit); - quantMaxColor.m_c[2] = (uint8_t)((pHigh->m_c[2] << 1) | maxPBit); - quantMaxColor.m_c[3] = (uint8_t)((pHigh->m_c[3] << 1) | maxPBit); - } - - color_quad_u8 actualMinColor = scale_color(&quantMinColor, pParams); - color_quad_u8 actualMaxColor = scale_color(&quantMaxColor, pParams); - - const uint32_t N = pParams->m_num_selector_weights; - assert(N >= 1 && N <= 32); - - color_quad_u8 weightedColors[32]; - weightedColors[0] = actualMinColor; - weightedColors[N - 1] = actualMaxColor; - - const uint32_t nc = pParams->m_has_alpha ? 4 : 3; - if (pParams->m_astc_endpoint_range) - { - for (uint32_t i = 1; i < (N - 1); i++) - { - for (uint32_t j = 0; j < nc; j++) - weightedColors[i].m_c[j] = (uint8_t)(astc_interpolate_linear(actualMinColor.m_c[j], actualMaxColor.m_c[j], pParams->m_pSelector_weights[i])); - } - } - else - { - for (uint32_t i = 1; i < (N - 1); i++) - for (uint32_t j = 0; j < nc; j++) - weightedColors[i].m_c[j] = (uint8_t)((actualMinColor.m_c[j] * (64 - pParams->m_pSelector_weights[i]) + actualMaxColor.m_c[j] * pParams->m_pSelector_weights[i] + 32) >> 6); - } - - const int lr = actualMinColor.m_c[0]; - const int lg = actualMinColor.m_c[1]; - const int lb = actualMinColor.m_c[2]; - const int dr = actualMaxColor.m_c[0] - lr; - const int dg = actualMaxColor.m_c[1] - lg; - const int db = actualMaxColor.m_c[2] - lb; - - uint64_t total_err = 0; - - if (pParams->m_pForce_selectors) - { - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - const color_quad_u8* pC = &pParams->m_pPixels[i]; - - const uint8_t sel = pParams->m_pForce_selectors[i]; - assert(sel < N); - - total_err += (pParams->m_has_alpha ? compute_color_distance_rgba : compute_color_distance_rgb)(&weightedColors[sel], pC, pParams->m_perceptual, pParams->m_weights); - - pResults->m_pSelectors_temp[i] = sel; - } - } - else if (!pParams->m_perceptual) - { - if (pParams->m_has_alpha) - { - const int la = actualMinColor.m_c[3]; - const int da = actualMaxColor.m_c[3] - la; - - const float f = N / (float)(squarei(dr) + squarei(dg) + squarei(db) + squarei(da) + .00000125f); - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - const color_quad_u8 *pC = &pParams->m_pPixels[i]; - int r = pC->m_c[0]; - int g = pC->m_c[1]; - int b = pC->m_c[2]; - int a = pC->m_c[3]; - - int best_sel = (int)((float)((r - lr) * dr + (g - lg) * dg + (b - lb) * db + (a - la) * da) * f + .5f); - best_sel = clampi(best_sel, 1, N - 1); - - uint64_t err0 = compute_color_distance_rgba(&weightedColors[best_sel - 1], pC, BC7ENC_FALSE, pParams->m_weights); - uint64_t err1 = compute_color_distance_rgba(&weightedColors[best_sel], pC, BC7ENC_FALSE, pParams->m_weights); - - if (err0 == err1) - { - // Prefer non-interpolation - if ((best_sel - 1) == 0) - best_sel = 0; - } - else if (err1 > err0) - { - err1 = err0; - --best_sel; - } - total_err += err1; - - pResults->m_pSelectors_temp[i] = (uint8_t)best_sel; - } - } - else - { - const float f = N / (float)(squarei(dr) + squarei(dg) + squarei(db) + .00000125f); - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - const color_quad_u8 *pC = &pParams->m_pPixels[i]; - int r = pC->m_c[0]; - int g = pC->m_c[1]; - int b = pC->m_c[2]; - - int sel = (int)((float)((r - lr) * dr + (g - lg) * dg + (b - lb) * db) * f + .5f); - sel = clampi(sel, 1, N - 1); - - uint64_t err0 = compute_color_distance_rgb(&weightedColors[sel - 1], pC, BC7ENC_FALSE, pParams->m_weights); - uint64_t err1 = compute_color_distance_rgb(&weightedColors[sel], pC, BC7ENC_FALSE, pParams->m_weights); - - int best_sel = sel; - uint64_t best_err = err1; - if (err0 == err1) - { - // Prefer non-interpolation - if ((best_sel - 1) == 0) - best_sel = 0; - } - else if (err0 < best_err) - { - best_err = err0; - best_sel = sel - 1; - } - - total_err += best_err; - - pResults->m_pSelectors_temp[i] = (uint8_t)best_sel; - } - } - } - else - { - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - uint64_t best_err = UINT64_MAX; - uint32_t best_sel = 0; - - if (pParams->m_has_alpha) - { - for (uint32_t j = 0; j < N; j++) - { - uint64_t err = compute_color_distance_rgba(&weightedColors[j], &pParams->m_pPixels[i], BC7ENC_TRUE, pParams->m_weights); - if (err < best_err) - { - best_err = err; - best_sel = j; - } - // Prefer non-interpolation - else if ((err == best_err) && (j == (N - 1))) - best_sel = j; - } - } - else - { - for (uint32_t j = 0; j < N; j++) - { - uint64_t err = compute_color_distance_rgb(&weightedColors[j], &pParams->m_pPixels[i], BC7ENC_TRUE, pParams->m_weights); - if (err < best_err) - { - best_err = err; - best_sel = j; - } - // Prefer non-interpolation - else if ((err == best_err) && (j == (N - 1))) - best_sel = j; - } - } - - total_err += best_err; - - pResults->m_pSelectors_temp[i] = (uint8_t)best_sel; - } - } - - if (total_err < pResults->m_best_overall_err) - { - pResults->m_best_overall_err = total_err; - - pResults->m_low_endpoint = *pLow; - pResults->m_high_endpoint = *pHigh; - - pResults->m_pbits[0] = pbits[0]; - pResults->m_pbits[1] = pbits[1]; - - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - } - - return total_err; -} - -static bool areDegenerateEndpoints(color_quad_u8* pTrialMinColor, color_quad_u8* pTrialMaxColor, const bc7enc_vec4F* pXl, const bc7enc_vec4F* pXh) -{ - for (uint32_t i = 0; i < 3; i++) - { - if (pTrialMinColor->m_c[i] == pTrialMaxColor->m_c[i]) - { - if (fabs(pXl->m_c[i] - pXh->m_c[i]) > 0.0f) - return true; - } - } - - return false; -} - -static void fixDegenerateEndpoints(uint32_t mode, color_quad_u8 *pTrialMinColor, color_quad_u8 *pTrialMaxColor, const bc7enc_vec4F*pXl, const bc7enc_vec4F*pXh, uint32_t iscale, int flags) -{ - if (mode == 255) - { - for (uint32_t i = 0; i < 3; i++) - { - if (pTrialMinColor->m_c[i] == pTrialMaxColor->m_c[i]) - { - if (fabs(pXl->m_c[i] - pXh->m_c[i]) > 0.000125f) - { - if (flags & 1) - { - if (pTrialMinColor->m_c[i] > 0) - pTrialMinColor->m_c[i]--; - } - if (flags & 2) - { - if (pTrialMaxColor->m_c[i] < iscale) - pTrialMaxColor->m_c[i]++; - } - } - } - } - } - else if (mode == 1) - { - // fix degenerate case where the input collapses to a single colorspace voxel, and we loose all freedom (test with grayscale ramps) - for (uint32_t i = 0; i < 3; i++) - { - if (pTrialMinColor->m_c[i] == pTrialMaxColor->m_c[i]) - { - if (fabs(pXl->m_c[i] - pXh->m_c[i]) > 0.000125f) - { - if (pTrialMinColor->m_c[i] > (iscale >> 1)) - { - if (pTrialMinColor->m_c[i] > 0) - pTrialMinColor->m_c[i]--; - else - if (pTrialMaxColor->m_c[i] < iscale) - pTrialMaxColor->m_c[i]++; - } - else - { - if (pTrialMaxColor->m_c[i] < iscale) - pTrialMaxColor->m_c[i]++; - else if (pTrialMinColor->m_c[i] > 0) - pTrialMinColor->m_c[i]--; - } - } - } - } - } -} - -static uint64_t find_optimal_solution(uint32_t mode, bc7enc_vec4F xl, bc7enc_vec4F xh, const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults) -{ - vec4F_saturate_in_place(&xl); vec4F_saturate_in_place(&xh); - - if (pParams->m_astc_endpoint_range) - { - const uint32_t levels = astc_get_levels(pParams->m_astc_endpoint_range); - - const float scale = 255.0f; - - color_quad_u8 trialMinColor8Bit, trialMaxColor8Bit; - color_quad_u8_set_clamped(&trialMinColor8Bit, (int)(xl.m_c[0] * scale + .5f), (int)(xl.m_c[1] * scale + .5f), (int)(xl.m_c[2] * scale + .5f), (int)(xl.m_c[3] * scale + .5f)); - color_quad_u8_set_clamped(&trialMaxColor8Bit, (int)(xh.m_c[0] * scale + .5f), (int)(xh.m_c[1] * scale + .5f), (int)(xh.m_c[2] * scale + .5f), (int)(xh.m_c[3] * scale + .5f)); - - color_quad_u8 trialMinColor, trialMaxColor; - for (uint32_t i = 0; i < 4; i++) - { - trialMinColor.m_c[i] = g_astc_nearest_sorted_index[pParams->m_astc_endpoint_range][trialMinColor8Bit.m_c[i]]; - trialMaxColor.m_c[i] = g_astc_nearest_sorted_index[pParams->m_astc_endpoint_range][trialMaxColor8Bit.m_c[i]]; - } - - if (areDegenerateEndpoints(&trialMinColor, &trialMaxColor, &xl, &xh)) - { - color_quad_u8 trialMinColorOrig(trialMinColor), trialMaxColorOrig(trialMaxColor); - - fixDegenerateEndpoints(mode, &trialMinColor, &trialMaxColor, &xl, &xh, levels - 1, 1); - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&trialMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&trialMaxColor, &pResults->m_high_endpoint)) - evaluate_solution(&trialMinColor, &trialMaxColor, pResults->m_pbits, pParams, pResults); - - trialMinColor = trialMinColorOrig; - trialMaxColor = trialMaxColorOrig; - fixDegenerateEndpoints(mode, &trialMinColor, &trialMaxColor, &xl, &xh, levels - 1, 0); - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&trialMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&trialMaxColor, &pResults->m_high_endpoint)) - evaluate_solution(&trialMinColor, &trialMaxColor, pResults->m_pbits, pParams, pResults); - - trialMinColor = trialMinColorOrig; - trialMaxColor = trialMaxColorOrig; - fixDegenerateEndpoints(mode, &trialMinColor, &trialMaxColor, &xl, &xh, levels - 1, 2); - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&trialMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&trialMaxColor, &pResults->m_high_endpoint)) - evaluate_solution(&trialMinColor, &trialMaxColor, pResults->m_pbits, pParams, pResults); - - trialMinColor = trialMinColorOrig; - trialMaxColor = trialMaxColorOrig; - fixDegenerateEndpoints(mode, &trialMinColor, &trialMaxColor, &xl, &xh, levels - 1, 3); - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&trialMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&trialMaxColor, &pResults->m_high_endpoint)) - evaluate_solution(&trialMinColor, &trialMaxColor, pResults->m_pbits, pParams, pResults); - } - else - { - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&trialMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&trialMaxColor, &pResults->m_high_endpoint)) - { - evaluate_solution(&trialMinColor, &trialMaxColor, pResults->m_pbits, pParams, pResults); - } - } - - for (uint32_t i = 0; i < 4; i++) - { - pResults->m_astc_low_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[i]].m_index; - pResults->m_astc_high_endpoint.m_c[i] = g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[i]].m_index; - } - } - else if (pParams->m_has_pbits) - { - const int iscalep = (1 << (pParams->m_comp_bits + 1)) - 1; - const float scalep = (float)iscalep; - - const int32_t totalComps = pParams->m_has_alpha ? 4 : 3; - - uint32_t best_pbits[2]; - color_quad_u8 bestMinColor, bestMaxColor; - - if (!pParams->m_endpoints_share_pbit) - { - float best_err0 = 1e+9; - float best_err1 = 1e+9; - - for (int p = 0; p < 2; p++) - { - color_quad_u8 xMinColor, xMaxColor; - - // Notes: The pbit controls which quantization intervals are selected. - // total_levels=2^(comp_bits+1), where comp_bits=4 for mode 0, etc. - // pbit 0: v=(b*2)/(total_levels-1), pbit 1: v=(b*2+1)/(total_levels-1) where b is the component bin from [0,total_levels/2-1] and v is the [0,1] component value - // rearranging you get for pbit 0: b=floor(v*(total_levels-1)/2+.5) - // rearranging you get for pbit 1: b=floor((v*(total_levels-1)-1)/2+.5) - for (uint32_t c = 0; c < 4; c++) - { - xMinColor.m_c[c] = (uint8_t)(clampi(((int)((xl.m_c[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - xMaxColor.m_c[c] = (uint8_t)(clampi(((int)((xh.m_c[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - } - - color_quad_u8 scaledLow = scale_color(&xMinColor, pParams); - color_quad_u8 scaledHigh = scale_color(&xMaxColor, pParams); - - float err0 = 0, err1 = 0; - for (int i = 0; i < totalComps; i++) - { - err0 += squaref(scaledLow.m_c[i] - xl.m_c[i] * 255.0f); - err1 += squaref(scaledHigh.m_c[i] - xh.m_c[i] * 255.0f); - } - - if (err0 < best_err0) - { - best_err0 = err0; - best_pbits[0] = p; - - bestMinColor.m_c[0] = xMinColor.m_c[0] >> 1; - bestMinColor.m_c[1] = xMinColor.m_c[1] >> 1; - bestMinColor.m_c[2] = xMinColor.m_c[2] >> 1; - bestMinColor.m_c[3] = xMinColor.m_c[3] >> 1; - } - - if (err1 < best_err1) - { - best_err1 = err1; - best_pbits[1] = p; - - bestMaxColor.m_c[0] = xMaxColor.m_c[0] >> 1; - bestMaxColor.m_c[1] = xMaxColor.m_c[1] >> 1; - bestMaxColor.m_c[2] = xMaxColor.m_c[2] >> 1; - bestMaxColor.m_c[3] = xMaxColor.m_c[3] >> 1; - } - } - } - else - { - // Endpoints share pbits - float best_err = 1e+9; - - for (int p = 0; p < 2; p++) - { - color_quad_u8 xMinColor, xMaxColor; - for (uint32_t c = 0; c < 4; c++) - { - xMinColor.m_c[c] = (uint8_t)(clampi(((int)((xl.m_c[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - xMaxColor.m_c[c] = (uint8_t)(clampi(((int)((xh.m_c[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - } - - color_quad_u8 scaledLow = scale_color(&xMinColor, pParams); - color_quad_u8 scaledHigh = scale_color(&xMaxColor, pParams); - - float err = 0; - for (int i = 0; i < totalComps; i++) - err += squaref((scaledLow.m_c[i] / 255.0f) - xl.m_c[i]) + squaref((scaledHigh.m_c[i] / 255.0f) - xh.m_c[i]); - - if (err < best_err) - { - best_err = err; - best_pbits[0] = p; - best_pbits[1] = p; - for (uint32_t j = 0; j < 4; j++) - { - bestMinColor.m_c[j] = xMinColor.m_c[j] >> 1; - bestMaxColor.m_c[j] = xMaxColor.m_c[j] >> 1; - } - } - } - } - - fixDegenerateEndpoints(mode, &bestMinColor, &bestMaxColor, &xl, &xh, iscalep >> 1, 0); - - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&bestMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&bestMaxColor, &pResults->m_high_endpoint) || (best_pbits[0] != pResults->m_pbits[0]) || (best_pbits[1] != pResults->m_pbits[1])) - evaluate_solution(&bestMinColor, &bestMaxColor, best_pbits, pParams, pResults); - } - else - { - const int iscale = (1 << pParams->m_comp_bits) - 1; - const float scale = (float)iscale; - - color_quad_u8 trialMinColor, trialMaxColor; - color_quad_u8_set_clamped(&trialMinColor, (int)(xl.m_c[0] * scale + .5f), (int)(xl.m_c[1] * scale + .5f), (int)(xl.m_c[2] * scale + .5f), (int)(xl.m_c[3] * scale + .5f)); - color_quad_u8_set_clamped(&trialMaxColor, (int)(xh.m_c[0] * scale + .5f), (int)(xh.m_c[1] * scale + .5f), (int)(xh.m_c[2] * scale + .5f), (int)(xh.m_c[3] * scale + .5f)); - - fixDegenerateEndpoints(mode, &trialMinColor, &trialMaxColor, &xl, &xh, iscale, 0); - - if ((pResults->m_best_overall_err == UINT64_MAX) || color_quad_u8_notequals(&trialMinColor, &pResults->m_low_endpoint) || color_quad_u8_notequals(&trialMaxColor, &pResults->m_high_endpoint)) - evaluate_solution(&trialMinColor, &trialMaxColor, pResults->m_pbits, pParams, pResults); - } - - return pResults->m_best_overall_err; -} - -void check_best_overall_error(const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults) -{ - const uint32_t n = pParams->m_num_selector_weights; - - assert(n <= 32); - - color_quad_u8 colors[32]; - for (uint32_t c = 0; c < 4; c++) - { - colors[0].m_c[c] = g_astc_unquant[pParams->m_astc_endpoint_range][pResults->m_astc_low_endpoint.m_c[c]].m_unquant; - assert(colors[0].m_c[c] == g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_low_endpoint.m_c[c]].m_unquant); - - colors[n-1].m_c[c] = g_astc_unquant[pParams->m_astc_endpoint_range][pResults->m_astc_high_endpoint.m_c[c]].m_unquant; - assert(colors[n-1].m_c[c] == g_astc_sorted_order_unquant[pParams->m_astc_endpoint_range][pResults->m_high_endpoint.m_c[c]].m_unquant); - } - - for (uint32_t i = 1; i < pParams->m_num_selector_weights - 1; i++) - for (uint32_t c = 0; c < 4; c++) - colors[i].m_c[c] = (uint8_t)astc_interpolate_linear(colors[0].m_c[c], colors[n - 1].m_c[c], pParams->m_pSelector_weights[i]); - - uint64_t total_err = 0; - for (uint32_t p = 0; p < pParams->m_num_pixels; p++) - { - const color_quad_u8 &orig = pParams->m_pPixels[p]; - const color_quad_u8 &packed = colors[pResults->m_pSelectors[p]]; - - if (pParams->m_has_alpha) - total_err += compute_color_distance_rgba(&orig, &packed, pParams->m_perceptual, pParams->m_weights); - else - total_err += compute_color_distance_rgb(&orig, &packed, pParams->m_perceptual, pParams->m_weights); - } - assert(total_err == pResults->m_best_overall_err); - - // HACK HACK - //if (total_err != pResults->m_best_overall_err) - // printf("X"); -} - -static bool is_solid_rgb(const color_cell_compressor_params *pParams, uint32_t &r, uint32_t &g, uint32_t &b) -{ - r = pParams->m_pPixels[0].m_c[0]; - g = pParams->m_pPixels[0].m_c[1]; - b = pParams->m_pPixels[0].m_c[2]; - - bool allSame = true; - for (uint32_t i = 1; i < pParams->m_num_pixels; i++) - { - if ((r != pParams->m_pPixels[i].m_c[0]) || (g != pParams->m_pPixels[i].m_c[1]) || (b != pParams->m_pPixels[i].m_c[2])) - { - allSame = false; - break; - } - } - - return allSame; -} - -static bool is_solid_rgba(const color_cell_compressor_params *pParams, uint32_t &r, uint32_t &g, uint32_t &b, uint32_t &a) -{ - r = pParams->m_pPixels[0].m_c[0]; - g = pParams->m_pPixels[0].m_c[1]; - b = pParams->m_pPixels[0].m_c[2]; - a = pParams->m_pPixels[0].m_c[3]; - - bool allSame = true; - for (uint32_t i = 1; i < pParams->m_num_pixels; i++) - { - if ((r != pParams->m_pPixels[i].m_c[0]) || (g != pParams->m_pPixels[i].m_c[1]) || (b != pParams->m_pPixels[i].m_c[2]) || (a != pParams->m_pPixels[i].m_c[3])) - { - allSame = false; - break; - } - } - - return allSame; -} - -uint64_t color_cell_compression(uint32_t mode, const color_cell_compressor_params *pParams, color_cell_compressor_results *pResults, const bc7enc_compress_block_params *pComp_params) -{ - if (!pParams->m_astc_endpoint_range) - { - assert((mode == 6) || (!pParams->m_has_alpha)); - } - assert(pParams->m_num_selector_weights >= 1 && pParams->m_num_selector_weights <= 32); - assert(pParams->m_pSelector_weights[0] == 0); - assert(pParams->m_pSelector_weights[pParams->m_num_selector_weights - 1] == 64); - - pResults->m_best_overall_err = UINT64_MAX; - - uint32_t cr, cg, cb, ca; - - // If the partition's colors are all the same, then just pack them as a single color. - if (!pParams->m_pForce_selectors) - { - if (mode == 1) - { - if (is_solid_rgb(pParams, cr, cg, cb)) - return pack_mode1_to_one_color(pParams, pResults, cr, cg, cb, pResults->m_pSelectors); - } - else if ((pParams->m_astc_endpoint_range == 8) && (pParams->m_num_selector_weights == 8) && (!pParams->m_has_alpha)) - { - if (is_solid_rgb(pParams, cr, cg, cb)) - return pack_astc_4bit_3bit_to_one_color(pParams, pResults, cr, cg, cb, pResults->m_pSelectors); - } - else if ((pParams->m_astc_endpoint_range == 7) && (pParams->m_num_selector_weights == 4) && (!pParams->m_has_alpha)) - { - if (is_solid_rgb(pParams, cr, cg, cb)) - return pack_astc_range7_2bit_to_one_color(pParams, pResults, cr, cg, cb, pResults->m_pSelectors); - } - else if ((pParams->m_astc_endpoint_range == 8) && (pParams->m_num_selector_weights == 4) && (pParams->m_has_alpha)) - { - if (is_solid_rgba(pParams, cr, cg, cb, ca)) - return pack_astc_4bit_2bit_to_one_color_rgba(pParams, pResults, cr, cg, cb, ca, pResults->m_pSelectors); - } - else if ((pParams->m_astc_endpoint_range == 13) && (pParams->m_num_selector_weights == 4) && (!pParams->m_has_alpha)) - { - if (is_solid_rgb(pParams, cr, cg, cb)) - return pack_astc_range13_2bit_to_one_color(pParams, pResults, cr, cg, cb, pResults->m_pSelectors); - } - else if ((pParams->m_astc_endpoint_range == 11) && (pParams->m_num_selector_weights == 32) && (!pParams->m_has_alpha)) - { - if (is_solid_rgb(pParams, cr, cg, cb)) - return pack_astc_range11_5bit_to_one_color(pParams, pResults, cr, cg, cb, pResults->m_pSelectors); - } - } - - // Compute partition's mean color and principle axis. - bc7enc_vec4F meanColor, axis; - vec4F_set_scalar(&meanColor, 0.0f); - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - bc7enc_vec4F color = vec4F_from_color(&pParams->m_pPixels[i]); - meanColor = vec4F_add(&meanColor, &color); - } - - bc7enc_vec4F meanColorScaled = vec4F_mul(&meanColor, 1.0f / (float)(pParams->m_num_pixels)); - - meanColor = vec4F_mul(&meanColor, 1.0f / (float)(pParams->m_num_pixels * 255.0f)); - vec4F_saturate_in_place(&meanColor); - - if (pParams->m_has_alpha) - { - // Use incremental PCA for RGBA PCA, because it's simple. - vec4F_set_scalar(&axis, 0.0f); - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - bc7enc_vec4F color = vec4F_from_color(&pParams->m_pPixels[i]); - color = vec4F_sub(&color, &meanColorScaled); - bc7enc_vec4F a = vec4F_mul(&color, color.m_c[0]); - bc7enc_vec4F b = vec4F_mul(&color, color.m_c[1]); - bc7enc_vec4F c = vec4F_mul(&color, color.m_c[2]); - bc7enc_vec4F d = vec4F_mul(&color, color.m_c[3]); - bc7enc_vec4F n = i ? axis : color; - vec4F_normalize_in_place(&n); - axis.m_c[0] += vec4F_dot(&a, &n); - axis.m_c[1] += vec4F_dot(&b, &n); - axis.m_c[2] += vec4F_dot(&c, &n); - axis.m_c[3] += vec4F_dot(&d, &n); - } - vec4F_normalize_in_place(&axis); - } - else - { - // Use covar technique for RGB PCA, because it doesn't require per-pixel normalization. - float cov[6] = { 0, 0, 0, 0, 0, 0 }; - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - const color_quad_u8 *pV = &pParams->m_pPixels[i]; - float r = pV->m_c[0] - meanColorScaled.m_c[0]; - float g = pV->m_c[1] - meanColorScaled.m_c[1]; - float b = pV->m_c[2] - meanColorScaled.m_c[2]; - cov[0] += r*r; cov[1] += r*g; cov[2] += r*b; cov[3] += g*g; cov[4] += g*b; cov[5] += b*b; - } - - float xr = .9f, xg = 1.0f, xb = .7f; - for (uint32_t iter = 0; iter < 3; iter++) - { - float r = xr * cov[0] + xg * cov[1] + xb * cov[2]; - float g = xr * cov[1] + xg * cov[3] + xb * cov[4]; - float b = xr * cov[2] + xg * cov[4] + xb * cov[5]; - - float m = maximumf(maximumf(fabsf(r), fabsf(g)), fabsf(b)); - if (m > 1e-10f) - { - m = 1.0f / m; - r *= m; g *= m; b *= m; - } - - xr = r; xg = g; xb = b; - } - - float len = xr * xr + xg * xg + xb * xb; - if (len < 1e-10f) - vec4F_set_scalar(&axis, 0.0f); - else - { - len = 1.0f / sqrtf(len); - xr *= len; xg *= len; xb *= len; - vec4F_set(&axis, xr, xg, xb, 0); - } - } - - if (vec4F_dot(&axis, &axis) < .5f) - { - if (pParams->m_perceptual) - vec4F_set(&axis, .213f, .715f, .072f, pParams->m_has_alpha ? .715f : 0); - else - vec4F_set(&axis, 1.0f, 1.0f, 1.0f, pParams->m_has_alpha ? 1.0f : 0); - vec4F_normalize_in_place(&axis); - } - - bc7enc_vec4F minColor, maxColor; - - float l = 1e+9f, h = -1e+9f; - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - bc7enc_vec4F color = vec4F_from_color(&pParams->m_pPixels[i]); - - bc7enc_vec4F q = vec4F_sub(&color, &meanColorScaled); - float d = vec4F_dot(&q, &axis); - - l = minimumf(l, d); - h = maximumf(h, d); - } - - l *= (1.0f / 255.0f); - h *= (1.0f / 255.0f); - - bc7enc_vec4F b0 = vec4F_mul(&axis, l); - bc7enc_vec4F b1 = vec4F_mul(&axis, h); - bc7enc_vec4F c0 = vec4F_add(&meanColor, &b0); - bc7enc_vec4F c1 = vec4F_add(&meanColor, &b1); - minColor = vec4F_saturate(&c0); - maxColor = vec4F_saturate(&c1); - - bc7enc_vec4F whiteVec; - vec4F_set_scalar(&whiteVec, 1.0f); - if (vec4F_dot(&minColor, &whiteVec) > vec4F_dot(&maxColor, &whiteVec)) - { -#if 1 - std::swap(minColor.m_c[0], maxColor.m_c[0]); - std::swap(minColor.m_c[1], maxColor.m_c[1]); - std::swap(minColor.m_c[2], maxColor.m_c[2]); - std::swap(minColor.m_c[3], maxColor.m_c[3]); -#elif 0 - // Fails to compile correctly with MSVC 2019 (code generation bug) - std::swap(minColor, maxColor); -#else - // Fails with MSVC 2019 - bc7enc_vec4F temp = minColor; - minColor = maxColor; - maxColor = temp; -#endif - } - - // First find a solution using the block's PCA. - if (!find_optimal_solution(mode, minColor, maxColor, pParams, pResults)) - return 0; - - for (uint32_t i = 0; i < pComp_params->m_least_squares_passes; i++) - { - // Now try to refine the solution using least squares by computing the optimal endpoints from the current selectors. - bc7enc_vec4F xl, xh; - vec4F_set_scalar(&xl, 0.0f); - vec4F_set_scalar(&xh, 0.0f); - if (pParams->m_has_alpha) - compute_least_squares_endpoints_rgba(pParams->m_num_pixels, pResults->m_pSelectors, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - else - compute_least_squares_endpoints_rgb(pParams->m_num_pixels, pResults->m_pSelectors, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - - xl = vec4F_mul(&xl, (1.0f / 255.0f)); - xh = vec4F_mul(&xh, (1.0f / 255.0f)); - - if (!find_optimal_solution(mode, xl, xh, pParams, pResults)) - return 0; - } - - if ((!pParams->m_pForce_selectors) && (pComp_params->m_uber_level > 0)) - { - // In uber level 1, try varying the selectors a little, somewhat like cluster fit would. First try incrementing the minimum selectors, - // then try decrementing the selectrors, then try both. - uint8_t selectors_temp[16], selectors_temp1[16]; - memcpy(selectors_temp, pResults->m_pSelectors, pParams->m_num_pixels); - - const int max_selector = pParams->m_num_selector_weights - 1; - - uint32_t min_sel = 256; - uint32_t max_sel = 0; - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - uint32_t sel = selectors_temp[i]; - min_sel = minimumu(min_sel, sel); - max_sel = maximumu(max_sel, sel); - } - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - uint32_t sel = selectors_temp[i]; - if ((sel == min_sel) && (sel < (pParams->m_num_selector_weights - 1))) - sel++; - selectors_temp1[i] = (uint8_t)sel; - } - - bc7enc_vec4F xl, xh; - vec4F_set_scalar(&xl, 0.0f); - vec4F_set_scalar(&xh, 0.0f); - if (pParams->m_has_alpha) - compute_least_squares_endpoints_rgba(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - else - compute_least_squares_endpoints_rgb(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - - xl = vec4F_mul(&xl, (1.0f / 255.0f)); - xh = vec4F_mul(&xh, (1.0f / 255.0f)); - - if (!find_optimal_solution(mode, xl, xh, pParams, pResults)) - return 0; - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - uint32_t sel = selectors_temp[i]; - if ((sel == max_sel) && (sel > 0)) - sel--; - selectors_temp1[i] = (uint8_t)sel; - } - - if (pParams->m_has_alpha) - compute_least_squares_endpoints_rgba(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - else - compute_least_squares_endpoints_rgb(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - - xl = vec4F_mul(&xl, (1.0f / 255.0f)); - xh = vec4F_mul(&xh, (1.0f / 255.0f)); - - if (!find_optimal_solution(mode, xl, xh, pParams, pResults)) - return 0; - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - { - uint32_t sel = selectors_temp[i]; - if ((sel == min_sel) && (sel < (pParams->m_num_selector_weights - 1))) - sel++; - else if ((sel == max_sel) && (sel > 0)) - sel--; - selectors_temp1[i] = (uint8_t)sel; - } - - if (pParams->m_has_alpha) - compute_least_squares_endpoints_rgba(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - else - compute_least_squares_endpoints_rgb(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - - xl = vec4F_mul(&xl, (1.0f / 255.0f)); - xh = vec4F_mul(&xh, (1.0f / 255.0f)); - - if (!find_optimal_solution(mode, xl, xh, pParams, pResults)) - return 0; - - // In uber levels 2+, try taking more advantage of endpoint extrapolation by scaling the selectors in one direction or another. - const uint32_t uber_err_thresh = (pParams->m_num_pixels * 56) >> 4; - if ((pComp_params->m_uber_level >= 2) && (pResults->m_best_overall_err > uber_err_thresh)) - { - const int Q = (pComp_params->m_uber_level >= 4) ? (pComp_params->m_uber_level - 2) : 1; - for (int ly = -Q; ly <= 1; ly++) - { - for (int hy = max_selector - 1; hy <= (max_selector + Q); hy++) - { - if ((ly == 0) && (hy == max_selector)) - continue; - - for (uint32_t i = 0; i < pParams->m_num_pixels; i++) - selectors_temp1[i] = (uint8_t)clampf(floorf((float)max_selector * ((float)selectors_temp[i] - (float)ly) / ((float)hy - (float)ly) + .5f), 0, (float)max_selector); - - //bc7enc_vec4F xl, xh; - vec4F_set_scalar(&xl, 0.0f); - vec4F_set_scalar(&xh, 0.0f); - if (pParams->m_has_alpha) - compute_least_squares_endpoints_rgba(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - else - compute_least_squares_endpoints_rgb(pParams->m_num_pixels, selectors_temp1, pParams->m_pSelector_weightsx, &xl, &xh, pParams->m_pPixels); - - xl = vec4F_mul(&xl, (1.0f / 255.0f)); - xh = vec4F_mul(&xh, (1.0f / 255.0f)); - - if (!find_optimal_solution(mode, xl, xh, pParams, pResults)) - return 0; - } - } - } - } - - if (!pParams->m_pForce_selectors) - { - // Try encoding the partition as a single color by using the optimal single colors tables to encode the block to its mean. - if (mode == 1) - { - color_cell_compressor_results avg_results = *pResults; - const uint32_t r = (int)(.5f + meanColor.m_c[0] * 255.0f), g = (int)(.5f + meanColor.m_c[1] * 255.0f), b = (int)(.5f + meanColor.m_c[2] * 255.0f); - uint64_t avg_err = pack_mode1_to_one_color(pParams, &avg_results, r, g, b, pResults->m_pSelectors_temp); - if (avg_err < pResults->m_best_overall_err) - { - *pResults = avg_results; - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - pResults->m_best_overall_err = avg_err; - } - } - else if ((pParams->m_astc_endpoint_range == 8) && (pParams->m_num_selector_weights == 8) && (!pParams->m_has_alpha)) - { - color_cell_compressor_results avg_results = *pResults; - const uint32_t r = (int)(.5f + meanColor.m_c[0] * 255.0f), g = (int)(.5f + meanColor.m_c[1] * 255.0f), b = (int)(.5f + meanColor.m_c[2] * 255.0f); - uint64_t avg_err = pack_astc_4bit_3bit_to_one_color(pParams, &avg_results, r, g, b, pResults->m_pSelectors_temp); - if (avg_err < pResults->m_best_overall_err) - { - *pResults = avg_results; - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - pResults->m_best_overall_err = avg_err; - } - } - else if ((pParams->m_astc_endpoint_range == 7) && (pParams->m_num_selector_weights == 4) && (!pParams->m_has_alpha)) - { - color_cell_compressor_results avg_results = *pResults; - const uint32_t r = (int)(.5f + meanColor.m_c[0] * 255.0f), g = (int)(.5f + meanColor.m_c[1] * 255.0f), b = (int)(.5f + meanColor.m_c[2] * 255.0f); - uint64_t avg_err = pack_astc_range7_2bit_to_one_color(pParams, &avg_results, r, g, b, pResults->m_pSelectors_temp); - if (avg_err < pResults->m_best_overall_err) - { - *pResults = avg_results; - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - pResults->m_best_overall_err = avg_err; - } - } - else if ((pParams->m_astc_endpoint_range == 8) && (pParams->m_num_selector_weights == 4) && (pParams->m_has_alpha)) - { - color_cell_compressor_results avg_results = *pResults; - const uint32_t r = (int)(.5f + meanColor.m_c[0] * 255.0f), g = (int)(.5f + meanColor.m_c[1] * 255.0f), b = (int)(.5f + meanColor.m_c[2] * 255.0f), a = (int)(.5f + meanColor.m_c[3] * 255.0f); - uint64_t avg_err = pack_astc_4bit_2bit_to_one_color_rgba(pParams, &avg_results, r, g, b, a, pResults->m_pSelectors_temp); - if (avg_err < pResults->m_best_overall_err) - { - *pResults = avg_results; - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - pResults->m_best_overall_err = avg_err; - } - } - else if ((pParams->m_astc_endpoint_range == 13) && (pParams->m_num_selector_weights == 4) && (!pParams->m_has_alpha)) - { - color_cell_compressor_results avg_results = *pResults; - const uint32_t r = (int)(.5f + meanColor.m_c[0] * 255.0f), g = (int)(.5f + meanColor.m_c[1] * 255.0f), b = (int)(.5f + meanColor.m_c[2] * 255.0f); - uint64_t avg_err = pack_astc_range13_2bit_to_one_color(pParams, &avg_results, r, g, b, pResults->m_pSelectors_temp); - if (avg_err < pResults->m_best_overall_err) - { - *pResults = avg_results; - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - pResults->m_best_overall_err = avg_err; - } - } - else if ((pParams->m_astc_endpoint_range == 11) && (pParams->m_num_selector_weights == 32) && (!pParams->m_has_alpha)) - { - color_cell_compressor_results avg_results = *pResults; - const uint32_t r = (int)(.5f + meanColor.m_c[0] * 255.0f), g = (int)(.5f + meanColor.m_c[1] * 255.0f), b = (int)(.5f + meanColor.m_c[2] * 255.0f); - uint64_t avg_err = pack_astc_range11_5bit_to_one_color(pParams, &avg_results, r, g, b, pResults->m_pSelectors_temp); - if (avg_err < pResults->m_best_overall_err) - { - *pResults = avg_results; - memcpy(pResults->m_pSelectors, pResults->m_pSelectors_temp, sizeof(pResults->m_pSelectors[0]) * pParams->m_num_pixels); - pResults->m_best_overall_err = avg_err; - } - } - } - -#if BC7ENC_CHECK_OVERALL_ERROR - check_best_overall_error(pParams, pResults); -#endif - - return pResults->m_best_overall_err; -} - -uint64_t color_cell_compression_est_astc( - uint32_t num_weights, uint32_t num_comps, const uint32_t *pWeight_table, - uint32_t num_pixels, const color_quad_u8* pPixels, - uint64_t best_err_so_far, const uint32_t weights[4]) -{ - assert(num_comps == 3 || num_comps == 4); - assert(num_weights >= 1 && num_weights <= 32); - assert(pWeight_table[0] == 0 && pWeight_table[num_weights - 1] == 64); - - // Find RGB bounds as an approximation of the block's principle axis - uint32_t lr = 255, lg = 255, lb = 255, la = 255; - uint32_t hr = 0, hg = 0, hb = 0, ha = 0; - if (num_comps == 4) - { - for (uint32_t i = 0; i < num_pixels; i++) - { - const color_quad_u8* pC = &pPixels[i]; - if (pC->m_c[0] < lr) lr = pC->m_c[0]; - if (pC->m_c[1] < lg) lg = pC->m_c[1]; - if (pC->m_c[2] < lb) lb = pC->m_c[2]; - if (pC->m_c[3] < la) la = pC->m_c[3]; - - if (pC->m_c[0] > hr) hr = pC->m_c[0]; - if (pC->m_c[1] > hg) hg = pC->m_c[1]; - if (pC->m_c[2] > hb) hb = pC->m_c[2]; - if (pC->m_c[3] > ha) ha = pC->m_c[3]; - } - } - else - { - for (uint32_t i = 0; i < num_pixels; i++) - { - const color_quad_u8* pC = &pPixels[i]; - if (pC->m_c[0] < lr) lr = pC->m_c[0]; - if (pC->m_c[1] < lg) lg = pC->m_c[1]; - if (pC->m_c[2] < lb) lb = pC->m_c[2]; - - if (pC->m_c[0] > hr) hr = pC->m_c[0]; - if (pC->m_c[1] > hg) hg = pC->m_c[1]; - if (pC->m_c[2] > hb) hb = pC->m_c[2]; - } - la = 255; - ha = 255; - } - - color_quad_u8 lowColor, highColor; - color_quad_u8_set(&lowColor, lr, lg, lb, la); - color_quad_u8_set(&highColor, hr, hg, hb, ha); - - // Place endpoints at bbox diagonals and compute interpolated colors - color_quad_u8 weightedColors[32]; - - weightedColors[0] = lowColor; - weightedColors[num_weights - 1] = highColor; - for (uint32_t i = 1; i < (num_weights - 1); i++) - { - weightedColors[i].m_c[0] = (uint8_t)astc_interpolate_linear(lowColor.m_c[0], highColor.m_c[0], pWeight_table[i]); - weightedColors[i].m_c[1] = (uint8_t)astc_interpolate_linear(lowColor.m_c[1], highColor.m_c[1], pWeight_table[i]); - weightedColors[i].m_c[2] = (uint8_t)astc_interpolate_linear(lowColor.m_c[2], highColor.m_c[2], pWeight_table[i]); - weightedColors[i].m_c[3] = (num_comps == 4) ? (uint8_t)astc_interpolate_linear(lowColor.m_c[3], highColor.m_c[3], pWeight_table[i]) : 255; - } - - // Compute dots and thresholds - const int ar = highColor.m_c[0] - lowColor.m_c[0]; - const int ag = highColor.m_c[1] - lowColor.m_c[1]; - const int ab = highColor.m_c[2] - lowColor.m_c[2]; - const int aa = highColor.m_c[3] - lowColor.m_c[3]; - - int dots[32]; - if (num_comps == 4) - { - for (uint32_t i = 0; i < num_weights; i++) - dots[i] = weightedColors[i].m_c[0] * ar + weightedColors[i].m_c[1] * ag + weightedColors[i].m_c[2] * ab + weightedColors[i].m_c[3] * aa; - } - else - { - assert(aa == 0); - for (uint32_t i = 0; i < num_weights; i++) - dots[i] = weightedColors[i].m_c[0] * ar + weightedColors[i].m_c[1] * ag + weightedColors[i].m_c[2] * ab; - } - - int thresh[32 - 1]; - for (uint32_t i = 0; i < (num_weights - 1); i++) - thresh[i] = (dots[i] + dots[i + 1] + 1) >> 1; - - uint64_t total_err = 0; - if ((weights[0] | weights[1] | weights[2] | weights[3]) == 1) - { - if (num_comps == 4) - { - for (uint32_t i = 0; i < num_pixels; i++) - { - const color_quad_u8* pC = &pPixels[i]; - - int d = ar * pC->m_c[0] + ag * pC->m_c[1] + ab * pC->m_c[2] + aa * pC->m_c[3]; - - // Find approximate selector - uint32_t s = 0; - for (int j = num_weights - 2; j >= 0; j--) - { - if (d >= thresh[j]) - { - s = j + 1; - break; - } - } - - // Compute error - const color_quad_u8* pE1 = &weightedColors[s]; - - int dr = (int)pE1->m_c[0] - (int)pC->m_c[0]; - int dg = (int)pE1->m_c[1] - (int)pC->m_c[1]; - int db = (int)pE1->m_c[2] - (int)pC->m_c[2]; - int da = (int)pE1->m_c[3] - (int)pC->m_c[3]; - - total_err += (dr * dr) + (dg * dg) + (db * db) + (da * da); - if (total_err > best_err_so_far) - break; - } - } - else - { - for (uint32_t i = 0; i < num_pixels; i++) - { - const color_quad_u8* pC = &pPixels[i]; - - int d = ar * pC->m_c[0] + ag * pC->m_c[1] + ab * pC->m_c[2]; - - // Find approximate selector - uint32_t s = 0; - for (int j = num_weights - 2; j >= 0; j--) - { - if (d >= thresh[j]) - { - s = j + 1; - break; - } - } - - // Compute error - const color_quad_u8* pE1 = &weightedColors[s]; - - int dr = (int)pE1->m_c[0] - (int)pC->m_c[0]; - int dg = (int)pE1->m_c[1] - (int)pC->m_c[1]; - int db = (int)pE1->m_c[2] - (int)pC->m_c[2]; - - total_err += (dr * dr) + (dg * dg) + (db * db); - if (total_err > best_err_so_far) - break; - } - } - } - else - { - if (num_comps == 4) - { - for (uint32_t i = 0; i < num_pixels; i++) - { - const color_quad_u8* pC = &pPixels[i]; - - int d = ar * pC->m_c[0] + ag * pC->m_c[1] + ab * pC->m_c[2] + aa * pC->m_c[3]; - - // Find approximate selector - uint32_t s = 0; - for (int j = num_weights - 2; j >= 0; j--) - { - if (d >= thresh[j]) - { - s = j + 1; - break; - } - } - - // Compute error - const color_quad_u8* pE1 = &weightedColors[s]; - - int dr = (int)pE1->m_c[0] - (int)pC->m_c[0]; - int dg = (int)pE1->m_c[1] - (int)pC->m_c[1]; - int db = (int)pE1->m_c[2] - (int)pC->m_c[2]; - int da = (int)pE1->m_c[3] - (int)pC->m_c[3]; - - total_err += weights[0] * (dr * dr) + weights[1] * (dg * dg) + weights[2] * (db * db) + weights[3] * (da * da); - if (total_err > best_err_so_far) - break; - } - } - else - { - for (uint32_t i = 0; i < num_pixels; i++) - { - const color_quad_u8* pC = &pPixels[i]; - - int d = ar * pC->m_c[0] + ag * pC->m_c[1] + ab * pC->m_c[2]; - - // Find approximate selector - uint32_t s = 0; - for (int j = num_weights - 2; j >= 0; j--) - { - if (d >= thresh[j]) - { - s = j + 1; - break; - } - } - - // Compute error - const color_quad_u8* pE1 = &weightedColors[s]; - - int dr = (int)pE1->m_c[0] - (int)pC->m_c[0]; - int dg = (int)pE1->m_c[1] - (int)pC->m_c[1]; - int db = (int)pE1->m_c[2] - (int)pC->m_c[2]; - - total_err += weights[0] * (dr * dr) + weights[1] * (dg * dg) + weights[2] * (db * db); - if (total_err > best_err_so_far) - break; - } - } - } - - return total_err; -} - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_bc7enc.h b/WickedEngine/Utility/basis_universal/encoder/basisu_bc7enc.h deleted file mode 100644 index 8d8b7888c..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_bc7enc.h +++ /dev/null @@ -1,132 +0,0 @@ -// File: basisu_bc7enc.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_enc.h" -#include "../transcoder/basisu_transcoder_uastc.h" - -namespace basisu -{ - -#define BC7ENC_MAX_PARTITIONS1 (64) -#define BC7ENC_MAX_UBER_LEVEL (4) - - typedef uint8_t bc7enc_bool; - -#define BC7ENC_TRUE (1) -#define BC7ENC_FALSE (0) - - typedef struct { float m_c[4]; } bc7enc_vec4F; - - extern const float g_bc7_weights1x[2 * 4]; - extern const float g_bc7_weights2x[4 * 4]; - extern const float g_bc7_weights3x[8 * 4]; - extern const float g_bc7_weights4x[16 * 4]; - extern const float g_astc_weights4x[16 * 4]; - extern const float g_astc_weights5x[32 * 4]; - extern const float g_astc_weights_3levelsx[3 * 4]; - - extern basist::astc_quant_bin g_astc_sorted_order_unquant[basist::BC7ENC_TOTAL_ASTC_RANGES][256]; // [sorted unquantized order] - - struct color_cell_compressor_params - { - uint32_t m_num_pixels; - const basist::color_quad_u8* m_pPixels; - - uint32_t m_num_selector_weights; - const uint32_t* m_pSelector_weights; - - const bc7enc_vec4F* m_pSelector_weightsx; - uint32_t m_comp_bits; - - const uint8_t *m_pForce_selectors; - - // Non-zero m_astc_endpoint_range enables ASTC mode. m_comp_bits and m_has_pbits are always false. We only support 2, 3, or 4 bit weight encodings. - uint32_t m_astc_endpoint_range; - - uint32_t m_weights[4]; - bc7enc_bool m_has_alpha; - bc7enc_bool m_has_pbits; - bc7enc_bool m_endpoints_share_pbit; - bc7enc_bool m_perceptual; - }; - - struct color_cell_compressor_results - { - uint64_t m_best_overall_err; - basist::color_quad_u8 m_low_endpoint; - basist::color_quad_u8 m_high_endpoint; - uint32_t m_pbits[2]; - uint8_t* m_pSelectors; - uint8_t* m_pSelectors_temp; - - // Encoded ASTC indices, if ASTC mode is enabled - basist::color_quad_u8 m_astc_low_endpoint; - basist::color_quad_u8 m_astc_high_endpoint; - }; - - struct bc7enc_compress_block_params - { - // m_max_partitions_mode1 may range from 0 (disables mode 1) to BC7ENC_MAX_PARTITIONS1. The higher this value, the slower the compressor, but the higher the quality. - uint32_t m_max_partitions_mode1; - - // Relative RGBA or YCbCrA weights. - uint32_t m_weights[4]; - - // m_uber_level may range from 0 to BC7ENC_MAX_UBER_LEVEL. The higher this value, the slower the compressor, but the higher the quality. - uint32_t m_uber_level; - - // If m_perceptual is true, colorspace error is computed in YCbCr space, otherwise RGB. - bc7enc_bool m_perceptual; - - uint32_t m_least_squares_passes; - }; - - uint64_t color_cell_compression(uint32_t mode, const color_cell_compressor_params* pParams, color_cell_compressor_results* pResults, const bc7enc_compress_block_params* pComp_params); - - uint64_t color_cell_compression_est_astc( - uint32_t num_weights, uint32_t num_comps, const uint32_t* pWeight_table, - uint32_t num_pixels, const basist::color_quad_u8* pPixels, - uint64_t best_err_so_far, const uint32_t weights[4]); - - inline void bc7enc_compress_block_params_init_linear_weights(bc7enc_compress_block_params* p) - { - p->m_perceptual = BC7ENC_FALSE; - p->m_weights[0] = 1; - p->m_weights[1] = 1; - p->m_weights[2] = 1; - p->m_weights[3] = 1; - } - - inline void bc7enc_compress_block_params_init_perceptual_weights(bc7enc_compress_block_params* p) - { - p->m_perceptual = BC7ENC_TRUE; - p->m_weights[0] = 128; - p->m_weights[1] = 64; - p->m_weights[2] = 16; - p->m_weights[3] = 32; - } - - inline void bc7enc_compress_block_params_init(bc7enc_compress_block_params* p) - { - p->m_max_partitions_mode1 = BC7ENC_MAX_PARTITIONS1; - p->m_least_squares_passes = 1; - p->m_uber_level = 0; - bc7enc_compress_block_params_init_perceptual_weights(p); - } - - // bc7enc_compress_block_init() MUST be called before calling bc7enc_compress_block() (or you'll get artifacts). - void bc7enc_compress_block_init(); - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_comp.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_comp.cpp deleted file mode 100644 index 41eae2b78..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_comp.cpp +++ /dev/null @@ -1,2525 +0,0 @@ -// basisu_comp.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_comp.h" -#include "basisu_enc.h" -#include -#include - -// basisu_transcoder.cpp is where basisu_miniz lives now, we just need the declarations here. -#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES -#include "basisu_miniz.h" - -#include "basisu_opencl.h" - -#if !BASISD_SUPPORT_KTX2 -#error BASISD_SUPPORT_KTX2 must be enabled (set to 1). -#endif - -#if BASISD_SUPPORT_KTX2_ZSTD -#include "../zstd/zstd.h" -#endif - -// Set to 1 to disable the mipPadding alignment workaround (which only seems to be needed when no key-values are written at all) -#define BASISU_DISABLE_KTX2_ALIGNMENT_WORKAROUND (0) - -// Set to 1 to disable writing all KTX2 key values, triggering the validator bug. -#define BASISU_DISABLE_KTX2_KEY_VALUES (0) - -using namespace buminiz; - -#define BASISU_USE_STB_IMAGE_RESIZE_FOR_MIPMAP_GEN 0 -#define DEBUG_CROP_TEXTURE_TO_64x64 (0) -#define DEBUG_RESIZE_TEXTURE (0) -#define DEBUG_EXTRACT_SINGLE_BLOCK (0) - -namespace basisu -{ - basis_compressor::basis_compressor() : - m_pOpenCL_context(nullptr), - m_basis_file_size(0), - m_basis_bits_per_texel(0.0f), - m_total_blocks(0), - m_any_source_image_has_alpha(false), - m_opencl_failed(false) - { - debug_printf("basis_compressor::basis_compressor\n"); - - assert(g_library_initialized); - } - - basis_compressor::~basis_compressor() - { - if (m_pOpenCL_context) - { - opencl_destroy_context(m_pOpenCL_context); - m_pOpenCL_context = nullptr; - } - } - - bool basis_compressor::init(const basis_compressor_params ¶ms) - { - debug_printf("basis_compressor::init\n"); - - if (!g_library_initialized) - { - error_printf("basis_compressor::init: basisu_encoder_init() MUST be called before using any encoder functionality!\n"); - return false; - } - - if (!params.m_pJob_pool) - { - error_printf("basis_compressor::init: A non-null job_pool pointer must be specified\n"); - return false; - } - - m_params = params; - - if (m_params.m_debug) - { - debug_printf("basis_compressor::init:\n"); - -#define PRINT_BOOL_VALUE(v) debug_printf("%s: %u %u\n", BASISU_STRINGIZE2(v), static_cast(m_params.v), m_params.v.was_changed()); -#define PRINT_INT_VALUE(v) debug_printf("%s: %i %u\n", BASISU_STRINGIZE2(v), static_cast(m_params.v), m_params.v.was_changed()); -#define PRINT_UINT_VALUE(v) debug_printf("%s: %u %u\n", BASISU_STRINGIZE2(v), static_cast(m_params.v), m_params.v.was_changed()); -#define PRINT_FLOAT_VALUE(v) debug_printf("%s: %f %u\n", BASISU_STRINGIZE2(v), static_cast(m_params.v), m_params.v.was_changed()); - - debug_printf("Source images: %u, source filenames: %u, source alpha filenames: %i, Source mipmap images: %u\n", - m_params.m_source_images.size(), m_params.m_source_filenames.size(), m_params.m_source_alpha_filenames.size(), m_params.m_source_mipmap_images.size()); - - if (m_params.m_source_mipmap_images.size()) - { - debug_printf("m_source_mipmap_images array sizes:\n"); - for (uint32_t i = 0; i < m_params.m_source_mipmap_images.size(); i++) - debug_printf("%u ", m_params.m_source_mipmap_images[i].size()); - debug_printf("\n"); - } - - PRINT_BOOL_VALUE(m_uastc); - PRINT_BOOL_VALUE(m_use_opencl); - PRINT_BOOL_VALUE(m_y_flip); - PRINT_BOOL_VALUE(m_debug); - PRINT_BOOL_VALUE(m_validate_etc1s); - PRINT_BOOL_VALUE(m_debug_images); - PRINT_INT_VALUE(m_compression_level); - PRINT_BOOL_VALUE(m_perceptual); - PRINT_BOOL_VALUE(m_no_endpoint_rdo); - PRINT_BOOL_VALUE(m_no_selector_rdo); - PRINT_BOOL_VALUE(m_read_source_images); - PRINT_BOOL_VALUE(m_write_output_basis_files); - PRINT_BOOL_VALUE(m_compute_stats); - PRINT_BOOL_VALUE(m_check_for_alpha); - PRINT_BOOL_VALUE(m_force_alpha); - debug_printf("swizzle: %d,%d,%d,%d\n", - m_params.m_swizzle[0], - m_params.m_swizzle[1], - m_params.m_swizzle[2], - m_params.m_swizzle[3]); - PRINT_BOOL_VALUE(m_renormalize); - PRINT_BOOL_VALUE(m_multithreading); - PRINT_BOOL_VALUE(m_disable_hierarchical_endpoint_codebooks); - - PRINT_FLOAT_VALUE(m_endpoint_rdo_thresh); - PRINT_FLOAT_VALUE(m_selector_rdo_thresh); - - PRINT_BOOL_VALUE(m_mip_gen); - PRINT_BOOL_VALUE(m_mip_renormalize); - PRINT_BOOL_VALUE(m_mip_wrapping); - PRINT_BOOL_VALUE(m_mip_fast); - PRINT_BOOL_VALUE(m_mip_srgb); - PRINT_FLOAT_VALUE(m_mip_premultiplied); - PRINT_FLOAT_VALUE(m_mip_scale); - PRINT_INT_VALUE(m_mip_smallest_dimension); - debug_printf("m_mip_filter: %s\n", m_params.m_mip_filter.c_str()); - - debug_printf("m_max_endpoint_clusters: %u\n", m_params.m_max_endpoint_clusters); - debug_printf("m_max_selector_clusters: %u\n", m_params.m_max_selector_clusters); - debug_printf("m_quality_level: %i\n", m_params.m_quality_level); - - debug_printf("m_tex_type: %u\n", m_params.m_tex_type); - debug_printf("m_userdata0: 0x%X, m_userdata1: 0x%X\n", m_params.m_userdata0, m_params.m_userdata1); - debug_printf("m_us_per_frame: %i (%f fps)\n", m_params.m_us_per_frame, m_params.m_us_per_frame ? 1.0f / (m_params.m_us_per_frame / 1000000.0f) : 0); - debug_printf("m_pack_uastc_flags: 0x%X\n", m_params.m_pack_uastc_flags); - - PRINT_BOOL_VALUE(m_rdo_uastc); - PRINT_FLOAT_VALUE(m_rdo_uastc_quality_scalar); - PRINT_INT_VALUE(m_rdo_uastc_dict_size); - PRINT_FLOAT_VALUE(m_rdo_uastc_max_allowed_rms_increase_ratio); - PRINT_FLOAT_VALUE(m_rdo_uastc_skip_block_rms_thresh); - PRINT_FLOAT_VALUE(m_rdo_uastc_max_smooth_block_error_scale); - PRINT_FLOAT_VALUE(m_rdo_uastc_smooth_block_max_std_dev); - PRINT_BOOL_VALUE(m_rdo_uastc_favor_simpler_modes_in_rdo_mode) - PRINT_BOOL_VALUE(m_rdo_uastc_multithreading); - - PRINT_INT_VALUE(m_resample_width); - PRINT_INT_VALUE(m_resample_height); - PRINT_FLOAT_VALUE(m_resample_factor); - - debug_printf("Has global codebooks: %u\n", m_params.m_pGlobal_codebooks ? 1 : 0); - if (m_params.m_pGlobal_codebooks) - { - debug_printf("Global codebook endpoints: %u selectors: %u\n", m_params.m_pGlobal_codebooks->get_endpoints().size(), m_params.m_pGlobal_codebooks->get_selectors().size()); - } - - PRINT_BOOL_VALUE(m_create_ktx2_file); - - debug_printf("KTX2 UASTC supercompression: %u\n", m_params.m_ktx2_uastc_supercompression); - debug_printf("KTX2 Zstd supercompression level: %i\n", (int)m_params.m_ktx2_zstd_supercompression_level); - debug_printf("KTX2 sRGB transfer func: %u\n", (int)m_params.m_ktx2_srgb_transfer_func); - debug_printf("Total KTX2 key values: %u\n", m_params.m_ktx2_key_values.size()); - for (uint32_t i = 0; i < m_params.m_ktx2_key_values.size(); i++) - { - debug_printf("Key: \"%s\"\n", m_params.m_ktx2_key_values[i].m_key.data()); - debug_printf("Value size: %u\n", m_params.m_ktx2_key_values[i].m_value.size()); - } - - PRINT_BOOL_VALUE(m_validate_output_data); - -#undef PRINT_BOOL_VALUE -#undef PRINT_INT_VALUE -#undef PRINT_UINT_VALUE -#undef PRINT_FLOAT_VALUE - } - - if ((m_params.m_read_source_images) && (!m_params.m_source_filenames.size())) - { - assert(0); - return false; - } - - if ((m_params.m_compute_stats) && (!m_params.m_validate_output_data)) - { - m_params.m_validate_output_data = true; - - debug_printf("Note: m_compute_stats is true, so forcing m_validate_output_data to true as well\n"); - } - - if ((m_params.m_use_opencl) && opencl_is_available() && !m_pOpenCL_context && !m_opencl_failed) - { - m_pOpenCL_context = opencl_create_context(); - if (!m_pOpenCL_context) - m_opencl_failed = true; - } - - return true; - } - - basis_compressor::error_code basis_compressor::process() - { - debug_printf("basis_compressor::process\n"); - - if (!read_source_images()) - return cECFailedReadingSourceImages; - - if (!validate_texture_type_constraints()) - return cECFailedValidating; - - if (m_params.m_create_ktx2_file) - { - if (!validate_ktx2_constraints()) - return cECFailedValidating; - } - - if (!extract_source_blocks()) - return cECFailedFrontEnd; - - if (m_params.m_uastc) - { - error_code ec = encode_slices_to_uastc(); - if (ec != cECSuccess) - return ec; - } - else - { - if (!process_frontend()) - return cECFailedFrontEnd; - - if (!extract_frontend_texture_data()) - return cECFailedFontendExtract; - - if (!process_backend()) - return cECFailedBackend; - } - - if (!create_basis_file_and_transcode()) - return cECFailedCreateBasisFile; - - if (m_params.m_create_ktx2_file) - { - if (!create_ktx2_file()) - return cECFailedCreateKTX2File; - } - - if (!write_output_files_and_compute_stats()) - return cECFailedWritingOutput; - - return cECSuccess; - } - - basis_compressor::error_code basis_compressor::encode_slices_to_uastc() - { - debug_printf("basis_compressor::encode_slices_to_uastc\n"); - - m_uastc_slice_textures.resize(m_slice_descs.size()); - for (uint32_t slice_index = 0; slice_index < m_slice_descs.size(); slice_index++) - m_uastc_slice_textures[slice_index].init(texture_format::cUASTC4x4, m_slice_descs[slice_index].m_orig_width, m_slice_descs[slice_index].m_orig_height); - - m_uastc_backend_output.m_tex_format = basist::basis_tex_format::cUASTC4x4; - m_uastc_backend_output.m_etc1s = false; - m_uastc_backend_output.m_slice_desc = m_slice_descs; - m_uastc_backend_output.m_slice_image_data.resize(m_slice_descs.size()); - m_uastc_backend_output.m_slice_image_crcs.resize(m_slice_descs.size()); - - for (uint32_t slice_index = 0; slice_index < m_slice_descs.size(); slice_index++) - { - gpu_image& tex = m_uastc_slice_textures[slice_index]; - basisu_backend_slice_desc& slice_desc = m_slice_descs[slice_index]; - (void)slice_desc; - - const uint32_t num_blocks_x = tex.get_blocks_x(); - const uint32_t num_blocks_y = tex.get_blocks_y(); - const uint32_t total_blocks = tex.get_total_blocks(); - const image& source_image = m_slice_images[slice_index]; - - std::atomic total_blocks_processed; - total_blocks_processed = 0; - - const uint32_t N = 256; - for (uint32_t block_index_iter = 0; block_index_iter < total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(total_blocks, block_index_iter + N); - - // FIXME: This sucks, but we're having a stack size related problem with std::function with emscripten. -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index, num_blocks_x, num_blocks_y, total_blocks, &source_image, &tex, &total_blocks_processed] - { -#endif - BASISU_NOTE_UNUSED(num_blocks_y); - - uint32_t uastc_flags = m_params.m_pack_uastc_flags; - if ((m_params.m_rdo_uastc) && (m_params.m_rdo_uastc_favor_simpler_modes_in_rdo_mode)) - uastc_flags |= cPackUASTCFavorSimplerModes; - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const uint32_t block_x = block_index % num_blocks_x; - const uint32_t block_y = block_index / num_blocks_x; - - color_rgba block_pixels[4][4]; - - source_image.extract_block_clamped((color_rgba*)block_pixels, block_x * 4, block_y * 4, 4, 4); - - basist::uastc_block& dest_block = *(basist::uastc_block*)tex.get_block_ptr(block_x, block_y); - - encode_uastc(&block_pixels[0][0].r, dest_block, uastc_flags); - - total_blocks_processed++; - - uint32_t val = total_blocks_processed; - if ((val & 16383) == 16383) - { - debug_printf("basis_compressor::encode_slices_to_uastc: %3.1f%% done\n", static_cast(val) * 100.0f / total_blocks); - } - - } - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } // block_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - if (m_params.m_rdo_uastc) - { - uastc_rdo_params rdo_params; - rdo_params.m_lambda = m_params.m_rdo_uastc_quality_scalar; - rdo_params.m_max_allowed_rms_increase_ratio = m_params.m_rdo_uastc_max_allowed_rms_increase_ratio; - rdo_params.m_skip_block_rms_thresh = m_params.m_rdo_uastc_skip_block_rms_thresh; - rdo_params.m_lz_dict_size = m_params.m_rdo_uastc_dict_size; - rdo_params.m_smooth_block_max_error_scale = m_params.m_rdo_uastc_max_smooth_block_error_scale; - rdo_params.m_max_smooth_block_std_dev = m_params.m_rdo_uastc_smooth_block_max_std_dev; - - bool status = uastc_rdo(tex.get_total_blocks(), (basist::uastc_block*)tex.get_ptr(), - (const color_rgba *)m_source_blocks[slice_desc.m_first_block_index].m_pixels, rdo_params, m_params.m_pack_uastc_flags, m_params.m_rdo_uastc_multithreading ? m_params.m_pJob_pool : nullptr, - (m_params.m_rdo_uastc_multithreading && m_params.m_pJob_pool) ? basisu::minimum(4, (uint32_t)m_params.m_pJob_pool->get_total_threads()) : 0); - if (!status) - { - return cECFailedUASTCRDOPostProcess; - } - } - - m_uastc_backend_output.m_slice_image_data[slice_index].resize(tex.get_size_in_bytes()); - memcpy(&m_uastc_backend_output.m_slice_image_data[slice_index][0], tex.get_ptr(), tex.get_size_in_bytes()); - - m_uastc_backend_output.m_slice_image_crcs[slice_index] = basist::crc16(tex.get_ptr(), tex.get_size_in_bytes(), 0); - - } // slice_index - - return cECSuccess; - } - - bool basis_compressor::generate_mipmaps(const image &img, basisu::vector &mips, bool has_alpha) - { - debug_printf("basis_compressor::generate_mipmaps\n"); - - interval_timer tm; - tm.start(); - - uint32_t total_levels = 1; - uint32_t w = img.get_width(), h = img.get_height(); - while (maximum(w, h) > (uint32_t)m_params.m_mip_smallest_dimension) - { - w = maximum(w >> 1U, 1U); - h = maximum(h >> 1U, 1U); - total_levels++; - } - -#if BASISU_USE_STB_IMAGE_RESIZE_FOR_MIPMAP_GEN - // Requires stb_image_resize - stbir_filter filter = STBIR_FILTER_DEFAULT; - if (m_params.m_mip_filter == "box") - filter = STBIR_FILTER_BOX; - else if (m_params.m_mip_filter == "triangle") - filter = STBIR_FILTER_TRIANGLE; - else if (m_params.m_mip_filter == "cubic") - filter = STBIR_FILTER_CUBICBSPLINE; - else if (m_params.m_mip_filter == "catmull") - filter = STBIR_FILTER_CATMULLROM; - else if (m_params.m_mip_filter == "mitchell") - filter = STBIR_FILTER_MITCHELL; - - for (uint32_t level = 1; level < total_levels; level++) - { - const uint32_t level_width = maximum(1, img.get_width() >> level); - const uint32_t level_height = maximum(1, img.get_height() >> level); - - image &level_img = *enlarge_vector(mips, 1); - level_img.resize(level_width, level_height); - - int result = stbir_resize_uint8_generic( - (const uint8_t *)img.get_ptr(), img.get_width(), img.get_height(), img.get_pitch() * sizeof(color_rgba), - (uint8_t *)level_img.get_ptr(), level_img.get_width(), level_img.get_height(), level_img.get_pitch() * sizeof(color_rgba), - has_alpha ? 4 : 3, has_alpha ? 3 : STBIR_ALPHA_CHANNEL_NONE, m_params.m_mip_premultiplied ? STBIR_FLAG_ALPHA_PREMULTIPLIED : 0, - m_params.m_mip_wrapping ? STBIR_EDGE_WRAP : STBIR_EDGE_CLAMP, filter, m_params.m_mip_srgb ? STBIR_COLORSPACE_SRGB : STBIR_COLORSPACE_LINEAR, - nullptr); - - if (result == 0) - { - error_printf("basis_compressor::generate_mipmaps: stbir_resize_uint8_generic() failed!\n"); - return false; - } - - if (m_params.m_mip_renormalize) - level_img.renormalize_normal_map(); - } -#else - for (uint32_t level = 1; level < total_levels; level++) - { - const uint32_t level_width = maximum(1, img.get_width() >> level); - const uint32_t level_height = maximum(1, img.get_height() >> level); - - image& level_img = *enlarge_vector(mips, 1); - level_img.resize(level_width, level_height); - - const image* pSource_image = &img; - - if (m_params.m_mip_fast) - { - if (level > 1) - pSource_image = &mips[level - 1]; - } - - bool status = image_resample(*pSource_image, level_img, m_params.m_mip_srgb, m_params.m_mip_filter.c_str(), m_params.m_mip_scale, m_params.m_mip_wrapping, 0, has_alpha ? 4 : 3); - if (!status) - { - error_printf("basis_compressor::generate_mipmaps: image_resample() failed!\n"); - return false; - } - - if (m_params.m_mip_renormalize) - level_img.renormalize_normal_map(); - } -#endif - - if (m_params.m_debug) - debug_printf("Total mipmap generation time: %3.3f secs\n", tm.get_elapsed_secs()); - - return true; - } - - bool basis_compressor::read_source_images() - { - debug_printf("basis_compressor::read_source_images\n"); - - const uint32_t total_source_files = m_params.m_read_source_images ? (uint32_t)m_params.m_source_filenames.size() : (uint32_t)m_params.m_source_images.size(); - if (!total_source_files) - return false; - - m_stats.resize(0); - m_slice_descs.resize(0); - m_slice_images.resize(0); - - m_total_blocks = 0; - uint32_t total_macroblocks = 0; - - m_any_source_image_has_alpha = false; - - basisu::vector source_images; - basisu::vector source_filenames; - - // First load all source images, and determine if any have an alpha channel. - for (uint32_t source_file_index = 0; source_file_index < total_source_files; source_file_index++) - { - const char *pSource_filename = ""; - - image file_image; - - if (m_params.m_read_source_images) - { - pSource_filename = m_params.m_source_filenames[source_file_index].c_str(); - - // Load the source image - if (!load_image(pSource_filename, file_image)) - { - error_printf("Failed reading source image: %s\n", pSource_filename); - return false; - } - - if (m_params.m_status_output) - { - printf("Read source image \"%s\", %ux%u\n", pSource_filename, file_image.get_width(), file_image.get_height()); - } - - // Optionally load another image and put a grayscale version of it into the alpha channel. - if ((source_file_index < m_params.m_source_alpha_filenames.size()) && (m_params.m_source_alpha_filenames[source_file_index].size())) - { - const char *pSource_alpha_image = m_params.m_source_alpha_filenames[source_file_index].c_str(); - - image alpha_data; - - if (!load_image(pSource_alpha_image, alpha_data)) - { - error_printf("Failed reading source image: %s\n", pSource_alpha_image); - return false; - } - - printf("Read source alpha image \"%s\", %ux%u\n", pSource_alpha_image, alpha_data.get_width(), alpha_data.get_height()); - - alpha_data.crop(file_image.get_width(), file_image.get_height()); - - for (uint32_t y = 0; y < file_image.get_height(); y++) - for (uint32_t x = 0; x < file_image.get_width(); x++) - file_image(x, y).a = (uint8_t)alpha_data(x, y).get_709_luma(); - } - } - else - { - file_image = m_params.m_source_images[source_file_index]; - } - - if (m_params.m_renormalize) - file_image.renormalize_normal_map(); - - bool alpha_swizzled = false; - if (m_params.m_swizzle[0] != 0 || - m_params.m_swizzle[1] != 1 || - m_params.m_swizzle[2] != 2 || - m_params.m_swizzle[3] != 3) - { - // Used for XY normal maps in RG - puts X in color, Y in alpha - for (uint32_t y = 0; y < file_image.get_height(); y++) - for (uint32_t x = 0; x < file_image.get_width(); x++) - { - const color_rgba &c = file_image(x, y); - file_image(x, y).set_noclamp_rgba(c[m_params.m_swizzle[0]], c[m_params.m_swizzle[1]], c[m_params.m_swizzle[2]], c[m_params.m_swizzle[3]]); - } - alpha_swizzled = m_params.m_swizzle[3] != 3; - } - - bool has_alpha = false; - if (m_params.m_force_alpha || alpha_swizzled) - has_alpha = true; - else if (!m_params.m_check_for_alpha) - file_image.set_alpha(255); - else if (file_image.has_alpha()) - has_alpha = true; - - if (has_alpha) - m_any_source_image_has_alpha = true; - - debug_printf("Source image index %u filename %s %ux%u has alpha: %u\n", source_file_index, pSource_filename, file_image.get_width(), file_image.get_height(), has_alpha); - - if (m_params.m_y_flip) - file_image.flip_y(); - -#if DEBUG_EXTRACT_SINGLE_BLOCK - image block_image(4, 4); - const uint32_t block_x = 0; - const uint32_t block_y = 0; - block_image.blit(block_x * 4, block_y * 4, 4, 4, 0, 0, file_image, 0); - file_image = block_image; -#endif - -#if DEBUG_CROP_TEXTURE_TO_64x64 - file_image.resize(64, 64); -#endif - - if (m_params.m_resample_width > 0 && m_params.m_resample_height > 0) - { - int new_width = basisu::minimum(m_params.m_resample_width, BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION); - int new_height = basisu::minimum(m_params.m_resample_height, BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION); - - debug_printf("Resampling to %ix%i\n", new_width, new_height); - - // TODO: A box filter - kaiser looks too sharp on video. Let the caller control this. - image temp_img(new_width, new_height); - image_resample(file_image, temp_img, m_params.m_perceptual, "box"); // "kaiser"); - temp_img.swap(file_image); - } - else if (m_params.m_resample_factor > 0.0f) - { - int new_width = basisu::minimum(basisu::maximum(1, (int)ceilf(file_image.get_width() * m_params.m_resample_factor)), BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION); - int new_height = basisu::minimum(basisu::maximum(1, (int)ceilf(file_image.get_height() * m_params.m_resample_factor)), BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION); - - debug_printf("Resampling to %ix%i\n", new_width, new_height); - - // TODO: A box filter - kaiser looks too sharp on video. Let the caller control this. - image temp_img(new_width, new_height); - image_resample(file_image, temp_img, m_params.m_perceptual, "box"); // "kaiser"); - temp_img.swap(file_image); - } - - if ((!file_image.get_width()) || (!file_image.get_height())) - { - error_printf("basis_compressor::read_source_images: Source image has a zero width and/or height!\n"); - return false; - } - - if ((file_image.get_width() > BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION) || (file_image.get_height() > BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION)) - { - error_printf("basis_compressor::read_source_images: Source image \"%s\" is too large!\n", pSource_filename); - return false; - } - - source_images.enlarge(1)->swap(file_image); - source_filenames.push_back(pSource_filename); - } - - // Check if the caller has generated their own mipmaps. - if (m_params.m_source_mipmap_images.size()) - { - // Make sure they've passed us enough mipmap chains. - if ((m_params.m_source_images.size() != m_params.m_source_mipmap_images.size()) || (total_source_files != m_params.m_source_images.size())) - { - error_printf("basis_compressor::read_source_images(): m_params.m_source_mipmap_images.size() must equal m_params.m_source_images.size()!\n"); - return false; - } - - // Check if any of the user-supplied mipmap levels has alpha. - // We're assuming the user has already preswizzled their mipmap source images. - if (!m_any_source_image_has_alpha) - { - for (uint32_t source_file_index = 0; source_file_index < total_source_files; source_file_index++) - { - for (uint32_t mip_index = 0; mip_index < m_params.m_source_mipmap_images[source_file_index].size(); mip_index++) - { - const image& mip_img = m_params.m_source_mipmap_images[source_file_index][mip_index]; - - if (mip_img.has_alpha()) - { - m_any_source_image_has_alpha = true; - break; - } - } - - if (m_any_source_image_has_alpha) - break; - } - } - } - - debug_printf("Any source image has alpha: %u\n", m_any_source_image_has_alpha); - - for (uint32_t source_file_index = 0; source_file_index < total_source_files; source_file_index++) - { - const std::string &source_filename = source_filenames[source_file_index]; - - // Now, for each source image, create the slices corresponding to that image. - basisu::vector slices; - - slices.reserve(32); - - // The first (largest) mipmap level. - image& file_image = source_images[source_file_index]; - - // Reserve a slot for mip0. - slices.resize(1); - - if (m_params.m_source_mipmap_images.size()) - { - // User-provided mipmaps for each layer or image in the texture array. - for (uint32_t mip_index = 0; mip_index < m_params.m_source_mipmap_images[source_file_index].size(); mip_index++) - { - image& mip_img = m_params.m_source_mipmap_images[source_file_index][mip_index]; - - if (m_params.m_swizzle[0] != 0 || - m_params.m_swizzle[1] != 1 || - m_params.m_swizzle[2] != 2 || - m_params.m_swizzle[3] != 3) - { - // Used for XY normal maps in RG - puts X in color, Y in alpha - for (uint32_t y = 0; y < mip_img.get_height(); y++) - for (uint32_t x = 0; x < mip_img.get_width(); x++) - { - const color_rgba &c = mip_img(x, y); - mip_img(x, y).set_noclamp_rgba(c[m_params.m_swizzle[0]], c[m_params.m_swizzle[1]], c[m_params.m_swizzle[2]], c[m_params.m_swizzle[3]]); - } - } - - slices.push_back(mip_img); - } - } - else if (m_params.m_mip_gen) - { - // Automatically generate mipmaps. - if (!generate_mipmaps(file_image, slices, m_any_source_image_has_alpha)) - return false; - } - - // Swap in the largest mipmap level here to avoid copying it, because generate_mips() will change the array. - // NOTE: file_image is now blank. - slices[0].swap(file_image); - - uint_vec mip_indices(slices.size()); - for (uint32_t i = 0; i < slices.size(); i++) - mip_indices[i] = i; - - if ((m_any_source_image_has_alpha) && (!m_params.m_uastc)) - { - // For ETC1S, if source has alpha, then even mips will have RGB, and odd mips will have alpha in RGB. - basisu::vector alpha_slices; - uint_vec new_mip_indices; - - alpha_slices.reserve(slices.size() * 2); - - for (uint32_t i = 0; i < slices.size(); i++) - { - image lvl_rgb(slices[i]); - image lvl_a(lvl_rgb); - - for (uint32_t y = 0; y < lvl_a.get_height(); y++) - { - for (uint32_t x = 0; x < lvl_a.get_width(); x++) - { - uint8_t a = lvl_a(x, y).a; - lvl_a(x, y).set_noclamp_rgba(a, a, a, 255); - } - } - - lvl_rgb.set_alpha(255); - - alpha_slices.push_back(lvl_rgb); - new_mip_indices.push_back(i); - - alpha_slices.push_back(lvl_a); - new_mip_indices.push_back(i); - } - - slices.swap(alpha_slices); - mip_indices.swap(new_mip_indices); - } - - assert(slices.size() == mip_indices.size()); - - for (uint32_t slice_index = 0; slice_index < slices.size(); slice_index++) - { - image& slice_image = slices[slice_index]; - const uint32_t orig_width = slice_image.get_width(); - const uint32_t orig_height = slice_image.get_height(); - - bool is_alpha_slice = false; - if (m_any_source_image_has_alpha) - { - if (m_params.m_uastc) - { - is_alpha_slice = slice_image.has_alpha(); - } - else - { - is_alpha_slice = (slice_index & 1) != 0; - } - } - - // Enlarge the source image to 4x4 block boundaries, duplicating edge pixels if necessary to avoid introducing extra colors into blocks. - slice_image.crop_dup_borders(slice_image.get_block_width(4) * 4, slice_image.get_block_height(4) * 4); - - if (m_params.m_debug_images) - { - save_png(string_format("basis_debug_source_image_%u_slice_%u.png", source_file_index, slice_index).c_str(), slice_image); - } - - const uint32_t dest_image_index = m_slice_images.size(); - - enlarge_vector(m_stats, 1); - enlarge_vector(m_slice_images, 1); - enlarge_vector(m_slice_descs, 1); - - m_stats[dest_image_index].m_filename = source_filename.c_str(); - m_stats[dest_image_index].m_width = orig_width; - m_stats[dest_image_index].m_height = orig_height; - - debug_printf("****** Slice %u: mip %u, alpha_slice: %u, filename: \"%s\", original: %ux%u actual: %ux%u\n", m_slice_descs.size() - 1, mip_indices[slice_index], is_alpha_slice, source_filename.c_str(), orig_width, orig_height, slice_image.get_width(), slice_image.get_height()); - - basisu_backend_slice_desc &slice_desc = m_slice_descs[dest_image_index]; - - slice_desc.m_first_block_index = m_total_blocks; - - slice_desc.m_orig_width = orig_width; - slice_desc.m_orig_height = orig_height; - - slice_desc.m_width = slice_image.get_width(); - slice_desc.m_height = slice_image.get_height(); - - slice_desc.m_num_blocks_x = slice_image.get_block_width(4); - slice_desc.m_num_blocks_y = slice_image.get_block_height(4); - - slice_desc.m_num_macroblocks_x = (slice_desc.m_num_blocks_x + 1) >> 1; - slice_desc.m_num_macroblocks_y = (slice_desc.m_num_blocks_y + 1) >> 1; - - slice_desc.m_source_file_index = source_file_index; - - slice_desc.m_mip_index = mip_indices[slice_index]; - - slice_desc.m_alpha = is_alpha_slice; - slice_desc.m_iframe = false; - if (m_params.m_tex_type == basist::cBASISTexTypeVideoFrames) - { - slice_desc.m_iframe = (source_file_index == 0); - } - - m_total_blocks += slice_desc.m_num_blocks_x * slice_desc.m_num_blocks_y; - total_macroblocks += slice_desc.m_num_macroblocks_x * slice_desc.m_num_macroblocks_y; - - // Finally, swap in the slice's image to avoid copying it. - // NOTE: slice_image is now blank. - m_slice_images[dest_image_index].swap(slice_image); - - } // slice_index - - } // source_file_index - - debug_printf("Total blocks: %u, Total macroblocks: %u\n", m_total_blocks, total_macroblocks); - - // Make sure we don't have too many slices - if (m_slice_descs.size() > BASISU_MAX_SLICES) - { - error_printf("Too many slices!\n"); - return false; - } - - // Basic sanity check on the slices - for (uint32_t i = 1; i < m_slice_descs.size(); i++) - { - const basisu_backend_slice_desc &prev_slice_desc = m_slice_descs[i - 1]; - const basisu_backend_slice_desc &slice_desc = m_slice_descs[i]; - - // Make sure images are in order - int image_delta = (int)slice_desc.m_source_file_index - (int)prev_slice_desc.m_source_file_index; - if (image_delta > 1) - return false; - - // Make sure mipmap levels are in order - if (!image_delta) - { - int level_delta = (int)slice_desc.m_mip_index - (int)prev_slice_desc.m_mip_index; - if (level_delta > 1) - return false; - } - } - - if (m_params.m_status_output) - { - printf("Total basis file slices: %u\n", (uint32_t)m_slice_descs.size()); - } - - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - const basisu_backend_slice_desc &slice_desc = m_slice_descs[i]; - - if (m_params.m_status_output) - { - printf("Slice: %u, alpha: %u, orig width/height: %ux%u, width/height: %ux%u, first_block: %u, image_index: %u, mip_level: %u, iframe: %u\n", - i, slice_desc.m_alpha, slice_desc.m_orig_width, slice_desc.m_orig_height, slice_desc.m_width, slice_desc.m_height, slice_desc.m_first_block_index, slice_desc.m_source_file_index, slice_desc.m_mip_index, slice_desc.m_iframe); - } - - if (m_any_source_image_has_alpha) - { - if (!m_params.m_uastc) - { - // For ETC1S, alpha slices must be at odd slice indices. - if (slice_desc.m_alpha) - { - if ((i & 1) == 0) - return false; - - const basisu_backend_slice_desc& prev_slice_desc = m_slice_descs[i - 1]; - - // Make sure previous slice has this image's color data - if (prev_slice_desc.m_source_file_index != slice_desc.m_source_file_index) - return false; - if (prev_slice_desc.m_alpha) - return false; - if (prev_slice_desc.m_mip_index != slice_desc.m_mip_index) - return false; - if (prev_slice_desc.m_num_blocks_x != slice_desc.m_num_blocks_x) - return false; - if (prev_slice_desc.m_num_blocks_y != slice_desc.m_num_blocks_y) - return false; - } - else if (i & 1) - return false; - } - } - else if (slice_desc.m_alpha) - { - return false; - } - - if ((slice_desc.m_orig_width > slice_desc.m_width) || (slice_desc.m_orig_height > slice_desc.m_height)) - return false; - if ((slice_desc.m_source_file_index == 0) && (m_params.m_tex_type == basist::cBASISTexTypeVideoFrames)) - { - if (!slice_desc.m_iframe) - return false; - } - } - - return true; - } - - // Do some basic validation for 2D arrays, cubemaps, video, and volumes. - bool basis_compressor::validate_texture_type_constraints() - { - debug_printf("basis_compressor::validate_texture_type_constraints\n"); - - // In 2D mode anything goes (each image may have a different resolution and # of mipmap levels). - if (m_params.m_tex_type == basist::cBASISTexType2D) - return true; - - uint32_t total_basis_images = 0; - - for (uint32_t slice_index = 0; slice_index < m_slice_images.size(); slice_index++) - { - const basisu_backend_slice_desc &slice_desc = m_slice_descs[slice_index]; - - total_basis_images = maximum(total_basis_images, slice_desc.m_source_file_index + 1); - } - - if (m_params.m_tex_type == basist::cBASISTexTypeCubemapArray) - { - // For cubemaps, validate that the total # of Basis images is a multiple of 6. - if ((total_basis_images % 6) != 0) - { - error_printf("basis_compressor::validate_texture_type_constraints: For cubemaps the total number of input images is not a multiple of 6!\n"); - return false; - } - } - - // Now validate that all the mip0's have the same dimensions, and that each image has the same # of mipmap levels. - uint_vec image_mipmap_levels(total_basis_images); - - int width = -1, height = -1; - for (uint32_t slice_index = 0; slice_index < m_slice_images.size(); slice_index++) - { - const basisu_backend_slice_desc &slice_desc = m_slice_descs[slice_index]; - - image_mipmap_levels[slice_desc.m_source_file_index] = maximum(image_mipmap_levels[slice_desc.m_source_file_index], slice_desc.m_mip_index + 1); - - if (slice_desc.m_mip_index != 0) - continue; - - if (width < 0) - { - width = slice_desc.m_orig_width; - height = slice_desc.m_orig_height; - } - else if ((width != (int)slice_desc.m_orig_width) || (height != (int)slice_desc.m_orig_height)) - { - error_printf("basis_compressor::validate_texture_type_constraints: The source image resolutions are not all equal!\n"); - return false; - } - } - - for (size_t i = 1; i < image_mipmap_levels.size(); i++) - { - if (image_mipmap_levels[0] != image_mipmap_levels[i]) - { - error_printf("basis_compressor::validate_texture_type_constraints: Each image must have the same number of mipmap levels!\n"); - return false; - } - } - - return true; - } - - bool basis_compressor::extract_source_blocks() - { - debug_printf("basis_compressor::extract_source_blocks\n"); - - m_source_blocks.resize(m_total_blocks); - - for (uint32_t slice_index = 0; slice_index < m_slice_images.size(); slice_index++) - { - const basisu_backend_slice_desc& slice_desc = m_slice_descs[slice_index]; - - const uint32_t num_blocks_x = slice_desc.m_num_blocks_x; - const uint32_t num_blocks_y = slice_desc.m_num_blocks_y; - - const image& source_image = m_slice_images[slice_index]; - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - source_image.extract_block_clamped(m_source_blocks[slice_desc.m_first_block_index + block_x + block_y * num_blocks_x].get_ptr(), block_x * 4, block_y * 4, 4, 4); - } - - return true; - } - - bool basis_compressor::process_frontend() - { - debug_printf("basis_compressor::process_frontend\n"); - -#if 0 - // TODO - basis_etc1_pack_params pack_params; - pack_params.m_quality = cETCQualityMedium; - pack_params.m_perceptual = m_params.m_perceptual; - pack_params.m_use_color4 = false; - - pack_etc1_block_context pack_context; - - std::unordered_set endpoint_hash; - std::unordered_set selector_hash; - - for (uint32_t i = 0; i < m_source_blocks.size(); i++) - { - etc_block blk; - pack_etc1_block(blk, m_source_blocks[i].get_ptr(), pack_params, pack_context); - - const color_rgba c0(blk.get_block_color(0, false)); - endpoint_hash.insert((c0.r | (c0.g << 5) | (c0.b << 10)) | (blk.get_inten_table(0) << 16)); - - const color_rgba c1(blk.get_block_color(1, false)); - endpoint_hash.insert((c1.r | (c1.g << 5) | (c1.b << 10)) | (blk.get_inten_table(1) << 16)); - - selector_hash.insert(blk.get_raw_selector_bits()); - } - - const uint32_t total_unique_endpoints = (uint32_t)endpoint_hash.size(); - const uint32_t total_unique_selectors = (uint32_t)selector_hash.size(); - - if (m_params.m_debug) - { - debug_printf("Unique endpoints: %u, unique selectors: %u\n", total_unique_endpoints, total_unique_selectors); - } -#endif - - const double total_texels = m_total_blocks * 16.0f; - - int endpoint_clusters = m_params.m_max_endpoint_clusters; - int selector_clusters = m_params.m_max_selector_clusters; - - if (endpoint_clusters > basisu_frontend::cMaxEndpointClusters) - { - error_printf("Too many endpoint clusters! (%u but max is %u)\n", endpoint_clusters, basisu_frontend::cMaxEndpointClusters); - return false; - } - if (selector_clusters > basisu_frontend::cMaxSelectorClusters) - { - error_printf("Too many selector clusters! (%u but max is %u)\n", selector_clusters, basisu_frontend::cMaxSelectorClusters); - return false; - } - - if (m_params.m_quality_level != -1) - { - const float quality = saturate(m_params.m_quality_level / 255.0f); - - const float bits_per_endpoint_cluster = 14.0f; - const float max_desired_endpoint_cluster_bits_per_texel = 1.0f; // .15f - int max_endpoints = static_cast((max_desired_endpoint_cluster_bits_per_texel * total_texels) / bits_per_endpoint_cluster); - - const float mid = 128.0f / 255.0f; - - float color_endpoint_quality = quality; - - const float endpoint_split_point = 0.5f; - - // In v1.2 and in previous versions, the endpoint codebook size at quality 128 was 3072. This wasn't quite large enough. - const int ENDPOINT_CODEBOOK_MID_QUALITY_CODEBOOK_SIZE = 4800; - const int MAX_ENDPOINT_CODEBOOK_SIZE = 8192; - - if (color_endpoint_quality <= mid) - { - color_endpoint_quality = lerp(0.0f, endpoint_split_point, powf(color_endpoint_quality / mid, .65f)); - - max_endpoints = clamp(max_endpoints, 256, ENDPOINT_CODEBOOK_MID_QUALITY_CODEBOOK_SIZE); - max_endpoints = minimum(max_endpoints, m_total_blocks); - - if (max_endpoints < 64) - max_endpoints = 64; - endpoint_clusters = clamp((uint32_t)(.5f + lerp(32, static_cast(max_endpoints), color_endpoint_quality)), 32, basisu_frontend::cMaxEndpointClusters); - } - else - { - color_endpoint_quality = powf((color_endpoint_quality - mid) / (1.0f - mid), 1.6f); - - max_endpoints = clamp(max_endpoints, 256, MAX_ENDPOINT_CODEBOOK_SIZE); - max_endpoints = minimum(max_endpoints, m_total_blocks); - - if (max_endpoints < ENDPOINT_CODEBOOK_MID_QUALITY_CODEBOOK_SIZE) - max_endpoints = ENDPOINT_CODEBOOK_MID_QUALITY_CODEBOOK_SIZE; - endpoint_clusters = clamp((uint32_t)(.5f + lerp(ENDPOINT_CODEBOOK_MID_QUALITY_CODEBOOK_SIZE, static_cast(max_endpoints), color_endpoint_quality)), 32, basisu_frontend::cMaxEndpointClusters); - } - - float bits_per_selector_cluster = 14.0f; - - const float max_desired_selector_cluster_bits_per_texel = 1.0f; // .15f - int max_selectors = static_cast((max_desired_selector_cluster_bits_per_texel * total_texels) / bits_per_selector_cluster); - max_selectors = clamp(max_selectors, 256, basisu_frontend::cMaxSelectorClusters); - max_selectors = minimum(max_selectors, m_total_blocks); - - float color_selector_quality = quality; - //color_selector_quality = powf(color_selector_quality, 1.65f); - color_selector_quality = powf(color_selector_quality, 2.62f); - - if (max_selectors < 96) - max_selectors = 96; - selector_clusters = clamp((uint32_t)(.5f + lerp(96, static_cast(max_selectors), color_selector_quality)), 8, basisu_frontend::cMaxSelectorClusters); - - debug_printf("Max endpoints: %u, max selectors: %u\n", endpoint_clusters, selector_clusters); - - if (m_params.m_quality_level >= 223) - { - if (!m_params.m_selector_rdo_thresh.was_changed()) - { - if (!m_params.m_endpoint_rdo_thresh.was_changed()) - m_params.m_endpoint_rdo_thresh *= .25f; - - if (!m_params.m_selector_rdo_thresh.was_changed()) - m_params.m_selector_rdo_thresh *= .25f; - } - } - else if (m_params.m_quality_level >= 192) - { - if (!m_params.m_endpoint_rdo_thresh.was_changed()) - m_params.m_endpoint_rdo_thresh *= .5f; - - if (!m_params.m_selector_rdo_thresh.was_changed()) - m_params.m_selector_rdo_thresh *= .5f; - } - else if (m_params.m_quality_level >= 160) - { - if (!m_params.m_endpoint_rdo_thresh.was_changed()) - m_params.m_endpoint_rdo_thresh *= .75f; - - if (!m_params.m_selector_rdo_thresh.was_changed()) - m_params.m_selector_rdo_thresh *= .75f; - } - else if (m_params.m_quality_level >= 129) - { - float l = (quality - 129 / 255.0f) / ((160 - 129) / 255.0f); - - if (!m_params.m_endpoint_rdo_thresh.was_changed()) - m_params.m_endpoint_rdo_thresh *= lerp(1.0f, .75f, l); - - if (!m_params.m_selector_rdo_thresh.was_changed()) - m_params.m_selector_rdo_thresh *= lerp(1.0f, .75f, l); - } - } - - basisu_frontend::params p; - p.m_num_source_blocks = m_total_blocks; - p.m_pSource_blocks = &m_source_blocks[0]; - p.m_max_endpoint_clusters = endpoint_clusters; - p.m_max_selector_clusters = selector_clusters; - p.m_perceptual = m_params.m_perceptual; - p.m_debug_stats = m_params.m_debug; - p.m_debug_images = m_params.m_debug_images; - p.m_compression_level = m_params.m_compression_level; - p.m_tex_type = m_params.m_tex_type; - p.m_multithreaded = m_params.m_multithreading; - p.m_disable_hierarchical_endpoint_codebooks = m_params.m_disable_hierarchical_endpoint_codebooks; - p.m_validate = m_params.m_validate_etc1s; - p.m_pJob_pool = m_params.m_pJob_pool; - p.m_pGlobal_codebooks = m_params.m_pGlobal_codebooks; - - // Don't keep trying to use OpenCL if it ever fails. - p.m_pOpenCL_context = !m_opencl_failed ? m_pOpenCL_context : nullptr; - - if (!m_frontend.init(p)) - { - error_printf("basisu_frontend::init() failed!\n"); - return false; - } - - m_frontend.compress(); - - if (m_frontend.get_opencl_failed()) - m_opencl_failed = true; - - if (m_params.m_debug_images) - { - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - char filename[1024]; -#ifdef _WIN32 - sprintf_s(filename, sizeof(filename), "rdo_frontend_output_output_blocks_%u.png", i); -#else - snprintf(filename, sizeof(filename), "rdo_frontend_output_output_blocks_%u.png", i); -#endif - m_frontend.dump_debug_image(filename, m_slice_descs[i].m_first_block_index, m_slice_descs[i].m_num_blocks_x, m_slice_descs[i].m_num_blocks_y, true); - -#ifdef _WIN32 - sprintf_s(filename, sizeof(filename), "rdo_frontend_output_api_%u.png", i); -#else - snprintf(filename, sizeof(filename), "rdo_frontend_output_api_%u.png", i); -#endif - m_frontend.dump_debug_image(filename, m_slice_descs[i].m_first_block_index, m_slice_descs[i].m_num_blocks_x, m_slice_descs[i].m_num_blocks_y, false); - } - } - - return true; - } - - bool basis_compressor::extract_frontend_texture_data() - { - if (!m_params.m_compute_stats) - return true; - - debug_printf("basis_compressor::extract_frontend_texture_data\n"); - - m_frontend_output_textures.resize(m_slice_descs.size()); - m_best_etc1s_images.resize(m_slice_descs.size()); - m_best_etc1s_images_unpacked.resize(m_slice_descs.size()); - - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - const basisu_backend_slice_desc &slice_desc = m_slice_descs[i]; - - const uint32_t num_blocks_x = slice_desc.m_num_blocks_x; - const uint32_t num_blocks_y = slice_desc.m_num_blocks_y; - - const uint32_t width = num_blocks_x * 4; - const uint32_t height = num_blocks_y * 4; - - m_frontend_output_textures[i].init(texture_format::cETC1, width, height); - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - memcpy(m_frontend_output_textures[i].get_block_ptr(block_x, block_y, 0), &m_frontend.get_output_block(slice_desc.m_first_block_index + block_x + block_y * num_blocks_x), sizeof(etc_block)); - -#if 0 - if (m_params.m_debug_images) - { - char filename[1024]; - sprintf_s(filename, sizeof(filename), "rdo_etc_frontend_%u_", i); - write_etc1_vis_images(m_frontend_output_textures[i], filename); - } -#endif - - m_best_etc1s_images[i].init(texture_format::cETC1, width, height); - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - memcpy(m_best_etc1s_images[i].get_block_ptr(block_x, block_y, 0), &m_frontend.get_etc1s_block(slice_desc.m_first_block_index + block_x + block_y * num_blocks_x), sizeof(etc_block)); - - m_best_etc1s_images[i].unpack(m_best_etc1s_images_unpacked[i]); - } - - return true; - } - - bool basis_compressor::process_backend() - { - debug_printf("basis_compressor::process_backend\n"); - - basisu_backend_params backend_params; - backend_params.m_debug = m_params.m_debug; - backend_params.m_debug_images = m_params.m_debug_images; - backend_params.m_etc1s = true; - backend_params.m_compression_level = m_params.m_compression_level; - - if (!m_params.m_no_endpoint_rdo) - backend_params.m_endpoint_rdo_quality_thresh = m_params.m_endpoint_rdo_thresh; - - if (!m_params.m_no_selector_rdo) - backend_params.m_selector_rdo_quality_thresh = m_params.m_selector_rdo_thresh; - - backend_params.m_used_global_codebooks = m_frontend.get_params().m_pGlobal_codebooks != nullptr; - backend_params.m_validate = m_params.m_validate_output_data; - - m_backend.init(&m_frontend, backend_params, m_slice_descs); - uint32_t total_packed_bytes = m_backend.encode(); - - if (!total_packed_bytes) - { - error_printf("basis_compressor::encode() failed!\n"); - return false; - } - - debug_printf("Total packed bytes (estimated): %u\n", total_packed_bytes); - - return true; - } - - bool basis_compressor::create_basis_file_and_transcode() - { - debug_printf("basis_compressor::create_basis_file_and_transcode\n"); - - const basisu_backend_output& encoded_output = m_params.m_uastc ? m_uastc_backend_output : m_backend.get_output(); - - if (!m_basis_file.init(encoded_output, m_params.m_tex_type, m_params.m_userdata0, m_params.m_userdata1, m_params.m_y_flip, m_params.m_us_per_frame)) - { - error_printf("basis_compressor::create_basis_file_and_transcode: basisu_backend:init() failed!\n"); - return false; - } - - const uint8_vec &comp_data = m_basis_file.get_compressed_data(); - - m_output_basis_file = comp_data; - - uint32_t total_orig_pixels = 0, total_texels = 0, total_orig_texels = 0; - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - const basisu_backend_slice_desc& slice_desc = m_slice_descs[i]; - - total_orig_pixels += slice_desc.m_orig_width * slice_desc.m_orig_height; - total_texels += slice_desc.m_width * slice_desc.m_height; - } - - m_basis_file_size = (uint32_t)comp_data.size(); - m_basis_bits_per_texel = total_orig_texels ? (comp_data.size() * 8.0f) / total_orig_texels : 0; - - debug_printf("Total .basis output file size: %u, %3.3f bits/texel\n", comp_data.size(), comp_data.size() * 8.0f / total_orig_pixels); - - if (m_params.m_validate_output_data) - { - interval_timer tm; - tm.start(); - - basist::basisu_transcoder_init(); - - debug_printf("basist::basisu_transcoder_init: Took %f ms\n", tm.get_elapsed_ms()); - - // Verify the compressed data by transcoding it to ASTC (or ETC1)/BC7 and validating the CRC's. - basist::basisu_transcoder decoder; - if (!decoder.validate_file_checksums(&comp_data[0], (uint32_t)comp_data.size(), true)) - { - error_printf("decoder.validate_file_checksums() failed!\n"); - return false; - } - - m_decoded_output_textures.resize(m_slice_descs.size()); - m_decoded_output_textures_unpacked.resize(m_slice_descs.size()); - - m_decoded_output_textures_bc7.resize(m_slice_descs.size()); - m_decoded_output_textures_unpacked_bc7.resize(m_slice_descs.size()); - - tm.start(); - if (m_params.m_pGlobal_codebooks) - { - decoder.set_global_codebooks(m_params.m_pGlobal_codebooks); - } - - if (!decoder.start_transcoding(&comp_data[0], (uint32_t)comp_data.size())) - { - error_printf("decoder.start_transcoding() failed!\n"); - return false; - } - - double start_transcoding_time = tm.get_elapsed_secs(); - - debug_printf("basisu_compressor::start_transcoding() took %3.3fms\n", start_transcoding_time * 1000.0f); - - double total_time_etc1s_or_astc = 0; - - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - gpu_image decoded_texture; - decoded_texture.init(m_params.m_uastc ? texture_format::cUASTC4x4 : texture_format::cETC1, m_slice_descs[i].m_width, m_slice_descs[i].m_height); - - tm.start(); - - basist::block_format format = m_params.m_uastc ? basist::block_format::cUASTC_4x4 : basist::block_format::cETC1; - uint32_t bytes_per_block = m_params.m_uastc ? 16 : 8; - - if (!decoder.transcode_slice(&comp_data[0], (uint32_t)comp_data.size(), i, - reinterpret_cast(decoded_texture.get_ptr()), m_slice_descs[i].m_num_blocks_x * m_slice_descs[i].m_num_blocks_y, format, bytes_per_block)) - { - error_printf("Transcoding failed on slice %u!\n", i); - return false; - } - - total_time_etc1s_or_astc += tm.get_elapsed_secs(); - - if (encoded_output.m_tex_format == basist::basis_tex_format::cETC1S) - { - uint32_t image_crc16 = basist::crc16(decoded_texture.get_ptr(), decoded_texture.get_size_in_bytes(), 0); - if (image_crc16 != encoded_output.m_slice_image_crcs[i]) - { - error_printf("Decoded image data CRC check failed on slice %u!\n", i); - return false; - } - debug_printf("Decoded image data CRC check succeeded on slice %i\n", i); - } - - m_decoded_output_textures[i] = decoded_texture; - } - - double total_time_bc7 = 0; - - if (basist::basis_is_format_supported(basist::transcoder_texture_format::cTFBC7_RGBA, basist::basis_tex_format::cUASTC4x4) && - basist::basis_is_format_supported(basist::transcoder_texture_format::cTFBC7_RGBA, basist::basis_tex_format::cETC1S)) - { - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - gpu_image decoded_texture; - decoded_texture.init(texture_format::cBC7, m_slice_descs[i].m_width, m_slice_descs[i].m_height); - - tm.start(); - - if (!decoder.transcode_slice(&comp_data[0], (uint32_t)comp_data.size(), i, - reinterpret_cast(decoded_texture.get_ptr()), m_slice_descs[i].m_num_blocks_x * m_slice_descs[i].m_num_blocks_y, basist::block_format::cBC7, 16)) - { - error_printf("Transcoding failed to BC7 on slice %u!\n", i); - return false; - } - - total_time_bc7 += tm.get_elapsed_secs(); - - m_decoded_output_textures_bc7[i] = decoded_texture; - } - } - - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - m_decoded_output_textures[i].unpack(m_decoded_output_textures_unpacked[i]); - - if (m_decoded_output_textures_bc7[i].get_pixel_width()) - m_decoded_output_textures_bc7[i].unpack(m_decoded_output_textures_unpacked_bc7[i]); - } - - debug_printf("Transcoded to %s in %3.3fms, %f texels/sec\n", m_params.m_uastc ? "ASTC" : "ETC1", total_time_etc1s_or_astc * 1000.0f, total_orig_pixels / total_time_etc1s_or_astc); - - if (total_time_bc7 != 0) - debug_printf("Transcoded to BC7 in %3.3fms, %f texels/sec\n", total_time_bc7 * 1000.0f, total_orig_pixels / total_time_bc7); - - for (uint32_t slice_index = 0; slice_index < m_slice_descs.size(); slice_index++) - { - const basisu_backend_slice_desc& slice_desc = m_slice_descs[slice_index]; - - const uint32_t total_blocks = slice_desc.m_num_blocks_x * slice_desc.m_num_blocks_y; - BASISU_NOTE_UNUSED(total_blocks); - - assert(m_decoded_output_textures[slice_index].get_total_blocks() == total_blocks); - } - } // if (m_params.m_validate_output_data) - - return true; - } - - bool basis_compressor::write_output_files_and_compute_stats() - { - debug_printf("basis_compressor::write_output_files_and_compute_stats\n"); - - const uint8_vec& comp_data = m_params.m_create_ktx2_file ? m_output_ktx2_file : m_basis_file.get_compressed_data(); - if (m_params.m_write_output_basis_files) - { - const std::string& output_filename = m_params.m_out_filename; - - if (!write_vec_to_file(output_filename.c_str(), comp_data)) - { - error_printf("Failed writing output data to file \"%s\"\n", output_filename.c_str()); - return false; - } - - if (m_params.m_status_output) - { - printf("Wrote output .basis/.ktx2 file \"%s\"\n", output_filename.c_str()); - } - } - - size_t comp_size = 0; - if ((m_params.m_compute_stats) && (m_params.m_uastc) && (comp_data.size())) - { - void* pComp_data = tdefl_compress_mem_to_heap(&comp_data[0], comp_data.size(), &comp_size, TDEFL_MAX_PROBES_MASK);// TDEFL_DEFAULT_MAX_PROBES); - size_t decomp_size = 0; - void* pDecomp_data = tinfl_decompress_mem_to_heap(pComp_data, comp_size, &decomp_size, 0); - if ((decomp_size != comp_data.size()) || (memcmp(pDecomp_data, &comp_data[0], decomp_size) != 0)) - { - printf("basis_compressor::create_basis_file_and_transcode:: miniz compression or decompression failed!\n"); - return false; - } - - mz_free(pComp_data); - mz_free(pDecomp_data); - - uint32_t total_texels = 0; - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - total_texels += (m_slice_descs[i].m_num_blocks_x * m_slice_descs[i].m_num_blocks_y) * 16; - - m_basis_bits_per_texel = comp_size * 8.0f / total_texels; - - debug_printf(".basis file size: %u, LZ compressed file size: %u, %3.2f bits/texel\n", - (uint32_t)comp_data.size(), - (uint32_t)comp_size, - m_basis_bits_per_texel); - } - - m_stats.resize(m_slice_descs.size()); - - if (m_params.m_validate_output_data) - { - for (uint32_t slice_index = 0; slice_index < m_slice_descs.size(); slice_index++) - { - const basisu_backend_slice_desc& slice_desc = m_slice_descs[slice_index]; - - if (m_params.m_compute_stats) - { - if (m_params.m_print_stats) - printf("Slice: %u\n", slice_index); - - image_stats& s = m_stats[slice_index]; - - // TODO: We used to output SSIM (during heavy encoder development), but this slowed down compression too much. We'll be adding it back. - - image_metrics em; - - // ---- .basis stats - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 0, 3); - if (m_params.m_print_stats) - em.print(".basis RGB Avg: "); - s.m_basis_rgb_avg_psnr = em.m_psnr; - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 0, 4); - if (m_params.m_print_stats) - em.print(".basis RGBA Avg: "); - s.m_basis_rgba_avg_psnr = em.m_psnr; - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 0, 1); - if (m_params.m_print_stats) - em.print(".basis R Avg: "); - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 1, 1); - if (m_params.m_print_stats) - em.print(".basis G Avg: "); - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 2, 1); - if (m_params.m_print_stats) - em.print(".basis B Avg: "); - - if (m_params.m_uastc) - { - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 3, 1); - if (m_params.m_print_stats) - em.print(".basis A Avg: "); - - s.m_basis_a_avg_psnr = em.m_psnr; - } - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 0, 0); - if (m_params.m_print_stats) - em.print(".basis 709 Luma: "); - s.m_basis_luma_709_psnr = static_cast(em.m_psnr); - s.m_basis_luma_709_ssim = static_cast(em.m_ssim); - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked[slice_index], 0, 0, true, true); - if (m_params.m_print_stats) - em.print(".basis 601 Luma: "); - s.m_basis_luma_601_psnr = static_cast(em.m_psnr); - - if (m_slice_descs.size() == 1) - { - const uint32_t output_size = comp_size ? (uint32_t)comp_size : (uint32_t)comp_data.size(); - if (m_params.m_print_stats) - { - debug_printf(".basis RGB PSNR per bit/texel*10000: %3.3f\n", 10000.0f * s.m_basis_rgb_avg_psnr / ((output_size * 8.0f) / (slice_desc.m_orig_width * slice_desc.m_orig_height))); - debug_printf(".basis Luma 709 PSNR per bit/texel*10000: %3.3f\n", 10000.0f * s.m_basis_luma_709_psnr / ((output_size * 8.0f) / (slice_desc.m_orig_width * slice_desc.m_orig_height))); - } - } - - if (m_decoded_output_textures_unpacked_bc7[slice_index].get_width()) - { - // ---- BC7 stats - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 0, 3); - if (m_params.m_print_stats) - em.print("BC7 RGB Avg: "); - s.m_bc7_rgb_avg_psnr = em.m_psnr; - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 0, 4); - if (m_params.m_print_stats) - em.print("BC7 RGBA Avg: "); - s.m_bc7_rgba_avg_psnr = em.m_psnr; - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 0, 1); - if (m_params.m_print_stats) - em.print("BC7 R Avg: "); - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 1, 1); - if (m_params.m_print_stats) - em.print("BC7 G Avg: "); - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 2, 1); - if (m_params.m_print_stats) - em.print("BC7 B Avg: "); - - if (m_params.m_uastc) - { - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 3, 1); - if (m_params.m_print_stats) - em.print("BC7 A Avg: "); - - s.m_bc7_a_avg_psnr = em.m_psnr; - } - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 0, 0); - if (m_params.m_print_stats) - em.print("BC7 709 Luma: "); - s.m_bc7_luma_709_psnr = static_cast(em.m_psnr); - s.m_bc7_luma_709_ssim = static_cast(em.m_ssim); - - em.calc(m_slice_images[slice_index], m_decoded_output_textures_unpacked_bc7[slice_index], 0, 0, true, true); - if (m_params.m_print_stats) - em.print("BC7 601 Luma: "); - s.m_bc7_luma_601_psnr = static_cast(em.m_psnr); - } - - if (!m_params.m_uastc) - { - // ---- Nearly best possible ETC1S stats - em.calc(m_slice_images[slice_index], m_best_etc1s_images_unpacked[slice_index], 0, 3); - if (m_params.m_print_stats) - em.print("Unquantized ETC1S RGB Avg: "); - s.m_best_etc1s_rgb_avg_psnr = static_cast(em.m_psnr); - - em.calc(m_slice_images[slice_index], m_best_etc1s_images_unpacked[slice_index], 0, 0); - if (m_params.m_print_stats) - em.print("Unquantized ETC1S 709 Luma: "); - s.m_best_etc1s_luma_709_psnr = static_cast(em.m_psnr); - s.m_best_etc1s_luma_709_ssim = static_cast(em.m_ssim); - - em.calc(m_slice_images[slice_index], m_best_etc1s_images_unpacked[slice_index], 0, 0, true, true); - if (m_params.m_print_stats) - em.print("Unquantized ETC1S 601 Luma: "); - s.m_best_etc1s_luma_601_psnr = static_cast(em.m_psnr); - } - } - - std::string out_basename; - if (m_params.m_out_filename.size()) - string_get_filename(m_params.m_out_filename.c_str(), out_basename); - else if (m_params.m_source_filenames.size()) - string_get_filename(m_params.m_source_filenames[slice_desc.m_source_file_index].c_str(), out_basename); - - string_remove_extension(out_basename); - out_basename = "basis_debug_" + out_basename + string_format("_slice_%u", slice_index); - - if ((!m_params.m_uastc) && (m_frontend.get_params().m_debug_images)) - { - // Write "best" ETC1S debug images - if (!m_params.m_uastc) - { - gpu_image best_etc1s_gpu_image(m_best_etc1s_images[slice_index]); - best_etc1s_gpu_image.override_dimensions(slice_desc.m_orig_width, slice_desc.m_orig_height); - write_compressed_texture_file((out_basename + "_best_etc1s.ktx").c_str(), best_etc1s_gpu_image); - - image best_etc1s_unpacked; - best_etc1s_gpu_image.unpack(best_etc1s_unpacked); - save_png(out_basename + "_best_etc1s.png", best_etc1s_unpacked); - } - } - - if (m_params.m_debug_images) - { - // Write decoded ETC1S/ASTC debug images - { - gpu_image decoded_etc1s_or_astc(m_decoded_output_textures[slice_index]); - decoded_etc1s_or_astc.override_dimensions(slice_desc.m_orig_width, slice_desc.m_orig_height); - write_compressed_texture_file((out_basename + "_transcoded_etc1s_or_astc.ktx").c_str(), decoded_etc1s_or_astc); - - image temp(m_decoded_output_textures_unpacked[slice_index]); - temp.crop(slice_desc.m_orig_width, slice_desc.m_orig_height); - save_png(out_basename + "_transcoded_etc1s_or_astc.png", temp); - } - - // Write decoded BC7 debug images - if (m_decoded_output_textures_bc7[slice_index].get_pixel_width()) - { - gpu_image decoded_bc7(m_decoded_output_textures_bc7[slice_index]); - decoded_bc7.override_dimensions(slice_desc.m_orig_width, slice_desc.m_orig_height); - write_compressed_texture_file((out_basename + "_transcoded_bc7.ktx").c_str(), decoded_bc7); - - image temp(m_decoded_output_textures_unpacked_bc7[slice_index]); - temp.crop(slice_desc.m_orig_width, slice_desc.m_orig_height); - save_png(out_basename + "_transcoded_bc7.png", temp); - } - } - } - } // if (m_params.m_validate_output_data) - - return true; - } - - // Make sure all the mip 0's have the same dimensions and number of mipmap levels, or we can't encode the KTX2 file. - bool basis_compressor::validate_ktx2_constraints() - { - uint32_t base_width = 0, base_height = 0; - uint32_t total_layers = 0; - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - if (m_slice_descs[i].m_mip_index == 0) - { - if (!base_width) - { - base_width = m_slice_descs[i].m_orig_width; - base_height = m_slice_descs[i].m_orig_height; - } - else - { - if ((m_slice_descs[i].m_orig_width != base_width) || (m_slice_descs[i].m_orig_height != base_height)) - { - return false; - } - } - - total_layers = maximum(total_layers, m_slice_descs[i].m_source_file_index + 1); - } - } - - basisu::vector total_mips(total_layers); - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - total_mips[m_slice_descs[i].m_source_file_index] = maximum(total_mips[m_slice_descs[i].m_source_file_index], m_slice_descs[i].m_mip_index + 1); - - for (uint32_t i = 1; i < total_layers; i++) - { - if (total_mips[0] != total_mips[i]) - { - return false; - } - } - - return true; - } - - static uint8_t g_ktx2_etc1s_nonalpha_dfd[44] = { 0x2C,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x2,0x0,0x28,0x0,0xA3,0x1,0x2,0x0,0x3,0x3,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x3F,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xFF,0xFF,0xFF,0xFF }; - static uint8_t g_ktx2_etc1s_alpha_dfd[60] = { 0x3C,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x2,0x0,0x38,0x0,0xA3,0x1,0x2,0x0,0x3,0x3,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x3F,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xFF,0xFF,0xFF,0xFF,0x40,0x0,0x3F,0xF,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xFF,0xFF,0xFF,0xFF }; - static uint8_t g_ktx2_uastc_nonalpha_dfd[44] = { 0x2C,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x2,0x0,0x28,0x0,0xA6,0x1,0x2,0x0,0x3,0x3,0x0,0x0,0x10,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x7F,0x4,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xFF,0xFF,0xFF,0xFF }; - static uint8_t g_ktx2_uastc_alpha_dfd[44] = { 0x2C,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x2,0x0,0x28,0x0,0xA6,0x1,0x2,0x0,0x3,0x3,0x0,0x0,0x10,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x7F,0x3,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0x0,0xFF,0xFF,0xFF,0xFF }; - - void basis_compressor::get_dfd(uint8_vec &dfd, const basist::ktx2_header &header) - { - const uint8_t* pDFD; - uint32_t dfd_len; - - if (m_params.m_uastc) - { - if (m_any_source_image_has_alpha) - { - pDFD = g_ktx2_uastc_alpha_dfd; - dfd_len = sizeof(g_ktx2_uastc_alpha_dfd); - } - else - { - pDFD = g_ktx2_uastc_nonalpha_dfd; - dfd_len = sizeof(g_ktx2_uastc_nonalpha_dfd); - } - } - else - { - if (m_any_source_image_has_alpha) - { - pDFD = g_ktx2_etc1s_alpha_dfd; - dfd_len = sizeof(g_ktx2_etc1s_alpha_dfd); - } - else - { - pDFD = g_ktx2_etc1s_nonalpha_dfd; - dfd_len = sizeof(g_ktx2_etc1s_nonalpha_dfd); - } - } - - assert(dfd_len >= 44); - - dfd.resize(dfd_len); - memcpy(dfd.data(), pDFD, dfd_len); - - uint32_t dfd_bits = basisu::read_le_dword(dfd.data() + 3 * sizeof(uint32_t)); - - dfd_bits &= ~(0xFF << 16); - - if (m_params.m_ktx2_srgb_transfer_func) - dfd_bits |= (basist::KTX2_KHR_DF_TRANSFER_SRGB << 16); - else - dfd_bits |= (basist::KTX2_KHR_DF_TRANSFER_LINEAR << 16); - - basisu::write_le_dword(dfd.data() + 3 * sizeof(uint32_t), dfd_bits); - - if (header.m_supercompression_scheme != basist::KTX2_SS_NONE) - { - uint32_t plane_bits = basisu::read_le_dword(dfd.data() + 5 * sizeof(uint32_t)); - - plane_bits &= ~0xFF; - - basisu::write_le_dword(dfd.data() + 5 * sizeof(uint32_t), plane_bits); - } - - // Fix up the DFD channel(s) - uint32_t dfd_chan0 = basisu::read_le_dword(dfd.data() + 7 * sizeof(uint32_t)); - - if (m_params.m_uastc) - { - dfd_chan0 &= ~(0xF << 24); - - // TODO: Allow the caller to override this - if (m_any_source_image_has_alpha) - dfd_chan0 |= (basist::KTX2_DF_CHANNEL_UASTC_RGBA << 24); - else - dfd_chan0 |= (basist::KTX2_DF_CHANNEL_UASTC_RGB << 24); - } - - basisu::write_le_dword(dfd.data() + 7 * sizeof(uint32_t), dfd_chan0); - } - - bool basis_compressor::create_ktx2_file() - { - if (m_params.m_uastc) - { - if ((m_params.m_ktx2_uastc_supercompression != basist::KTX2_SS_NONE) && (m_params.m_ktx2_uastc_supercompression != basist::KTX2_SS_ZSTANDARD)) - return false; - } - - const basisu_backend_output& backend_output = m_backend.get_output(); - - // Determine the width/height, number of array layers, mipmap levels, and the number of faces (1 for 2D, 6 for cubemap). - // This does not support 1D or 3D. - uint32_t base_width = 0, base_height = 0, total_layers = 0, total_levels = 0, total_faces = 1; - - for (uint32_t i = 0; i < m_slice_descs.size(); i++) - { - if ((m_slice_descs[i].m_mip_index == 0) && (!base_width)) - { - base_width = m_slice_descs[i].m_orig_width; - base_height = m_slice_descs[i].m_orig_height; - } - - total_layers = maximum(total_layers, m_slice_descs[i].m_source_file_index + 1); - - if (!m_slice_descs[i].m_source_file_index) - total_levels = maximum(total_levels, m_slice_descs[i].m_mip_index + 1); - } - - if (m_params.m_tex_type == basist::cBASISTexTypeCubemapArray) - { - assert((total_layers % 6) == 0); - - total_layers /= 6; - assert(total_layers >= 1); - - total_faces = 6; - } - - basist::ktx2_header header; - memset(&header, 0, sizeof(header)); - - memcpy(header.m_identifier, basist::g_ktx2_file_identifier, sizeof(basist::g_ktx2_file_identifier)); - header.m_pixel_width = base_width; - header.m_pixel_height = base_height; - header.m_face_count = total_faces; - header.m_vk_format = basist::KTX2_VK_FORMAT_UNDEFINED; - header.m_type_size = 1; - header.m_level_count = total_levels; - header.m_layer_count = (total_layers > 1) ? total_layers : 0; - - if (m_params.m_uastc) - { - switch (m_params.m_ktx2_uastc_supercompression) - { - case basist::KTX2_SS_NONE: - { - header.m_supercompression_scheme = basist::KTX2_SS_NONE; - break; - } - case basist::KTX2_SS_ZSTANDARD: - { -#if BASISD_SUPPORT_KTX2_ZSTD - header.m_supercompression_scheme = basist::KTX2_SS_ZSTANDARD; -#else - header.m_supercompression_scheme = basist::KTX2_SS_NONE; -#endif - break; - } - default: assert(0); return false; - } - } - - basisu::vector level_data_bytes(total_levels); - basisu::vector compressed_level_data_bytes(total_levels); - uint_vec slice_level_offsets(m_slice_descs.size()); - - // This will append the texture data in the correct order (for each level: layer, then face). - for (uint32_t slice_index = 0; slice_index < m_slice_descs.size(); slice_index++) - { - const basisu_backend_slice_desc& slice_desc = m_slice_descs[slice_index]; - - slice_level_offsets[slice_index] = level_data_bytes[slice_desc.m_mip_index].size(); - - if (m_params.m_uastc) - append_vector(level_data_bytes[slice_desc.m_mip_index], m_uastc_backend_output.m_slice_image_data[slice_index]); - else - append_vector(level_data_bytes[slice_desc.m_mip_index], backend_output.m_slice_image_data[slice_index]); - } - - // UASTC supercompression - if ((m_params.m_uastc) && (header.m_supercompression_scheme == basist::KTX2_SS_ZSTANDARD)) - { -#if BASISD_SUPPORT_KTX2_ZSTD - for (uint32_t level_index = 0; level_index < total_levels; level_index++) - { - compressed_level_data_bytes[level_index].resize(ZSTD_compressBound(level_data_bytes[level_index].size())); - - size_t result = ZSTD_compress(compressed_level_data_bytes[level_index].data(), compressed_level_data_bytes[level_index].size(), - level_data_bytes[level_index].data(), level_data_bytes[level_index].size(), - m_params.m_ktx2_zstd_supercompression_level); - - if (ZSTD_isError(result)) - return false; - - compressed_level_data_bytes[level_index].resize(result); - } -#else - // Can't get here - assert(0); - return false; -#endif - } - else - { - // No supercompression - compressed_level_data_bytes = level_data_bytes; - } - - uint8_vec etc1s_global_data; - - // Create ETC1S global supercompressed data - if (!m_params.m_uastc) - { - basist::ktx2_etc1s_global_data_header etc1s_global_data_header; - clear_obj(etc1s_global_data_header); - - etc1s_global_data_header.m_endpoint_count = backend_output.m_num_endpoints; - etc1s_global_data_header.m_selector_count = backend_output.m_num_selectors; - etc1s_global_data_header.m_endpoints_byte_length = backend_output.m_endpoint_palette.size(); - etc1s_global_data_header.m_selectors_byte_length = backend_output.m_selector_palette.size(); - etc1s_global_data_header.m_tables_byte_length = backend_output.m_slice_image_tables.size(); - - basisu::vector etc1s_image_descs(total_levels * total_layers * total_faces); - memset(etc1s_image_descs.data(), 0, etc1s_image_descs.size_in_bytes()); - - for (uint32_t slice_index = 0; slice_index < m_slice_descs.size(); slice_index++) - { - const basisu_backend_slice_desc& slice_desc = m_slice_descs[slice_index]; - - const uint32_t level_index = slice_desc.m_mip_index; - uint32_t layer_index = slice_desc.m_source_file_index; - uint32_t face_index = 0; - - if (m_params.m_tex_type == basist::cBASISTexTypeCubemapArray) - { - face_index = layer_index % 6; - layer_index /= 6; - } - - const uint32_t etc1s_image_index = level_index * (total_layers * total_faces) + layer_index * total_faces + face_index; - - if (slice_desc.m_alpha) - { - etc1s_image_descs[etc1s_image_index].m_alpha_slice_byte_length = backend_output.m_slice_image_data[slice_index].size(); - etc1s_image_descs[etc1s_image_index].m_alpha_slice_byte_offset = slice_level_offsets[slice_index]; - } - else - { - if (m_params.m_tex_type == basist::cBASISTexTypeVideoFrames) - etc1s_image_descs[etc1s_image_index].m_image_flags = !slice_desc.m_iframe ? basist::KTX2_IMAGE_IS_P_FRAME : 0; - - etc1s_image_descs[etc1s_image_index].m_rgb_slice_byte_length = backend_output.m_slice_image_data[slice_index].size(); - etc1s_image_descs[etc1s_image_index].m_rgb_slice_byte_offset = slice_level_offsets[slice_index]; - } - } // slice_index - - append_vector(etc1s_global_data, (const uint8_t*)&etc1s_global_data_header, sizeof(etc1s_global_data_header)); - append_vector(etc1s_global_data, (const uint8_t*)etc1s_image_descs.data(), etc1s_image_descs.size_in_bytes()); - append_vector(etc1s_global_data, backend_output.m_endpoint_palette); - append_vector(etc1s_global_data, backend_output.m_selector_palette); - append_vector(etc1s_global_data, backend_output.m_slice_image_tables); - - header.m_supercompression_scheme = basist::KTX2_SS_BASISLZ; - } - - // Key values - basist::ktx2_transcoder::key_value_vec key_values(m_params.m_ktx2_key_values); - key_values.enlarge(1); - - const char* pKTXwriter = "KTXwriter"; - key_values.back().m_key.resize(strlen(pKTXwriter) + 1); - memcpy(key_values.back().m_key.data(), pKTXwriter, strlen(pKTXwriter) + 1); - - char writer_id[128]; -#ifdef _MSC_VER - sprintf_s(writer_id, sizeof(writer_id), "Basis Universal %s", BASISU_LIB_VERSION_STRING); -#else - snprintf(writer_id, sizeof(writer_id), "Basis Universal %s", BASISU_LIB_VERSION_STRING); -#endif - key_values.back().m_value.resize(strlen(writer_id) + 1); - memcpy(key_values.back().m_value.data(), writer_id, strlen(writer_id) + 1); - - key_values.sort(); - -#if BASISU_DISABLE_KTX2_KEY_VALUES - // HACK HACK - Clear the key values array, which causes no key values to be written (triggering the ktx2check validator bug). - key_values.clear(); -#endif - - uint8_vec key_value_data; - - // DFD - uint8_vec dfd; - get_dfd(dfd, header); - - const uint32_t kvd_file_offset = sizeof(header) + sizeof(basist::ktx2_level_index) * total_levels + dfd.size(); - - for (uint32_t pass = 0; pass < 2; pass++) - { - for (uint32_t i = 0; i < key_values.size(); i++) - { - if (key_values[i].m_key.size() < 2) - return false; - - if (key_values[i].m_key.back() != 0) - return false; - - const uint64_t total_len = (uint64_t)key_values[i].m_key.size() + (uint64_t)key_values[i].m_value.size(); - if (total_len >= UINT32_MAX) - return false; - - packed_uint<4> le_len((uint32_t)total_len); - append_vector(key_value_data, (const uint8_t*)&le_len, sizeof(le_len)); - - append_vector(key_value_data, key_values[i].m_key); - append_vector(key_value_data, key_values[i].m_value); - - const uint32_t ofs = key_value_data.size() & 3; - const uint32_t padding = (4 - ofs) & 3; - for (uint32_t p = 0; p < padding; p++) - key_value_data.push_back(0); - } - - if (header.m_supercompression_scheme != basist::KTX2_SS_NONE) - break; - -#if BASISU_DISABLE_KTX2_ALIGNMENT_WORKAROUND - break; -#endif - - // Hack to ensure the KVD block ends on a 16 byte boundary, because we have no other official way of aligning the data. - uint32_t kvd_end_file_offset = kvd_file_offset + key_value_data.size(); - uint32_t bytes_needed_to_pad = (16 - (kvd_end_file_offset & 15)) & 15; - if (!bytes_needed_to_pad) - { - // We're good. No need to add a dummy key. - break; - } - - assert(!pass); - if (pass) - return false; - - if (bytes_needed_to_pad < 6) - bytes_needed_to_pad += 16; - - printf("WARNING: Due to a KTX2 validator bug related to mipPadding, we must insert a dummy key into the KTX2 file of %u bytes\n", bytes_needed_to_pad); - - // We're not good - need to add a dummy key large enough to force file alignment so the mip level array gets aligned. - // We can't just add some bytes before the mip level array because ktx2check will see that as extra data in the file that shouldn't be there in ktxValidator::validateDataSize(). - key_values.enlarge(1); - for (uint32_t i = 0; i < (bytes_needed_to_pad - 4 - 1 - 1); i++) - key_values.back().m_key.push_back(127); - - key_values.back().m_key.push_back(0); - - key_values.back().m_value.push_back(0); - - key_values.sort(); - - key_value_data.resize(0); - - // Try again - } - - basisu::vector level_index_array(total_levels); - memset(level_index_array.data(), 0, level_index_array.size_in_bytes()); - - m_output_ktx2_file.clear(); - m_output_ktx2_file.reserve(m_output_basis_file.size()); - - // Dummy header - m_output_ktx2_file.resize(sizeof(header)); - - // Level index array - append_vector(m_output_ktx2_file, (const uint8_t*)level_index_array.data(), level_index_array.size_in_bytes()); - - // DFD - const uint8_t* pDFD = dfd.data(); - uint32_t dfd_len = dfd.size(); - - header.m_dfd_byte_offset = m_output_ktx2_file.size(); - header.m_dfd_byte_length = dfd_len; - append_vector(m_output_ktx2_file, pDFD, dfd_len); - - // Key value data - if (key_value_data.size()) - { - assert(kvd_file_offset == m_output_ktx2_file.size()); - - header.m_kvd_byte_offset = m_output_ktx2_file.size(); - header.m_kvd_byte_length = key_value_data.size(); - append_vector(m_output_ktx2_file, key_value_data); - } - - // Global Supercompressed Data - if (etc1s_global_data.size()) - { - uint32_t ofs = m_output_ktx2_file.size() & 7; - uint32_t padding = (8 - ofs) & 7; - for (uint32_t i = 0; i < padding; i++) - m_output_ktx2_file.push_back(0); - - header.m_sgd_byte_length = etc1s_global_data.size(); - header.m_sgd_byte_offset = m_output_ktx2_file.size(); - - append_vector(m_output_ktx2_file, etc1s_global_data); - } - - // mipPadding - if (header.m_supercompression_scheme == basist::KTX2_SS_NONE) - { - // We currently can't do this or the validator will incorrectly give an error. - uint32_t ofs = m_output_ktx2_file.size() & 15; - uint32_t padding = (16 - ofs) & 15; - - // Make sure we're always aligned here (due to a validator bug). - if (padding) - { - printf("Warning: KTX2 mip level data is not 16-byte aligned. This may trigger a ktx2check validation bug. Writing %u bytes of mipPadding.\n", padding); - } - - for (uint32_t i = 0; i < padding; i++) - m_output_ktx2_file.push_back(0); - } - - // Level data - write the smallest mipmap first. - for (int level = total_levels - 1; level >= 0; level--) - { - level_index_array[level].m_byte_length = compressed_level_data_bytes[level].size(); - if (m_params.m_uastc) - level_index_array[level].m_uncompressed_byte_length = level_data_bytes[level].size(); - - level_index_array[level].m_byte_offset = m_output_ktx2_file.size(); - append_vector(m_output_ktx2_file, compressed_level_data_bytes[level]); - } - - // Write final header - memcpy(m_output_ktx2_file.data(), &header, sizeof(header)); - - // Write final level index array - memcpy(m_output_ktx2_file.data() + sizeof(header), level_index_array.data(), level_index_array.size_in_bytes()); - - debug_printf("Total .ktx2 output file size: %u\n", m_output_ktx2_file.size()); - - return true; - } - - bool basis_parallel_compress( - uint32_t total_threads, - const basisu::vector& params_vec, - basisu::vector< parallel_results >& results_vec) - { - assert(g_library_initialized); - if (!g_library_initialized) - { - error_printf("basis_parallel_compress: basisu_encoder_init() MUST be called before using any encoder functionality!\n"); - return false; - } - - assert(total_threads >= 1); - total_threads = basisu::maximum(total_threads, 1); - - job_pool jpool(total_threads); - - results_vec.resize(0); - results_vec.resize(params_vec.size()); - - std::atomic result; - result = true; - - std::atomic opencl_failed; - opencl_failed = false; - - for (uint32_t pindex = 0; pindex < params_vec.size(); pindex++) - { - jpool.add_job([pindex, ¶ms_vec, &results_vec, &result, &opencl_failed] { - - basis_compressor_params params = params_vec[pindex]; - parallel_results& results = results_vec[pindex]; - - interval_timer tm; - tm.start(); - - basis_compressor c; - - // Dummy job pool - job_pool task_jpool(1); - params.m_pJob_pool = &task_jpool; - // TODO: Remove this flag entirely - params.m_multithreading = true; - - // Stop using OpenCL if a failure ever occurs. - if (opencl_failed) - params.m_use_opencl = false; - - bool status = c.init(params); - - if (c.get_opencl_failed()) - opencl_failed = true; - - if (status) - { - basis_compressor::error_code ec = c.process(); - - if (c.get_opencl_failed()) - opencl_failed = true; - - results.m_error_code = ec; - - if (ec == basis_compressor::cECSuccess) - { - results.m_basis_file = c.get_output_basis_file(); - results.m_ktx2_file = c.get_output_ktx2_file(); - results.m_stats = c.get_stats(); - results.m_basis_bits_per_texel = c.get_basis_bits_per_texel(); - results.m_any_source_image_has_alpha = c.get_any_source_image_has_alpha(); - } - else - { - result = false; - } - } - else - { - results.m_error_code = basis_compressor::cECFailedInitializing; - - result = false; - } - - results.m_total_time = tm.get_elapsed_secs(); - } ); - - } // pindex - - jpool.wait_for_all(); - - if (opencl_failed) - error_printf("An OpenCL error occured sometime during compression. The compressor fell back to CPU processing after the failure.\n"); - - return result; - } - - void* basis_compress( - const basisu::vector& source_images, - uint32_t flags_and_quality, float uastc_rdo_quality, - size_t* pSize, - image_stats* pStats) - { - // Check input parameters - if ((!source_images.size()) || (!pSize)) - { - error_printf("basis_compress: Invalid parameter\n"); - assert(0); - return nullptr; - } - - *pSize = 0; - - // Initialize a job pool - uint32_t num_threads = 1; - if (flags_and_quality & cFlagThreaded) - num_threads = basisu::maximum(1, std::thread::hardware_concurrency()); - - job_pool jp(num_threads); - - // Initialize the compressor parameter struct - basis_compressor_params comp_params; - comp_params.m_pJob_pool = &jp; - - comp_params.m_y_flip = (flags_and_quality & cFlagYFlip) != 0; - comp_params.m_debug = (flags_and_quality & cFlagDebug) != 0; - - // Copy the largest mipmap level - comp_params.m_source_images.resize(1); - comp_params.m_source_images[0] = source_images[0]; - - // Copy the smaller mipmap levels, if any - if (source_images.size() > 1) - { - comp_params.m_source_mipmap_images.resize(1); - comp_params.m_source_mipmap_images[0].resize(source_images.size() - 1); - - for (uint32_t i = 1; i < source_images.size(); i++) - comp_params.m_source_mipmap_images[0][i - 1] = source_images[i]; - } - - comp_params.m_multithreading = (flags_and_quality & cFlagThreaded) != 0; - comp_params.m_use_opencl = (flags_and_quality & cFlagUseOpenCL) != 0; - - comp_params.m_write_output_basis_files = false; - - comp_params.m_perceptual = (flags_and_quality & cFlagSRGB) != 0; - comp_params.m_mip_srgb = comp_params.m_perceptual; - comp_params.m_mip_gen = (flags_and_quality & (cFlagGenMipsWrap | cFlagGenMipsClamp)) != 0; - comp_params.m_mip_wrapping = (flags_and_quality & cFlagGenMipsWrap) != 0; - - comp_params.m_uastc = (flags_and_quality & cFlagUASTC) != 0; - if (comp_params.m_uastc) - { - comp_params.m_pack_uastc_flags = flags_and_quality & cPackUASTCLevelMask; - comp_params.m_rdo_uastc = (flags_and_quality & cFlagUASTCRDO) != 0; - comp_params.m_rdo_uastc_quality_scalar = uastc_rdo_quality; - } - else - comp_params.m_quality_level = basisu::maximum(1, flags_and_quality & 255); - - comp_params.m_create_ktx2_file = (flags_and_quality & cFlagKTX2) != 0; - - if (comp_params.m_create_ktx2_file) - { - // Set KTX2 specific parameters. - if ((flags_and_quality & cFlagKTX2UASTCSuperCompression) && (comp_params.m_uastc)) - comp_params.m_ktx2_uastc_supercompression = basist::KTX2_SS_ZSTANDARD; - - comp_params.m_ktx2_srgb_transfer_func = comp_params.m_perceptual; - } - - comp_params.m_compute_stats = (pStats != nullptr); - comp_params.m_print_stats = (flags_and_quality & cFlagPrintStats) != 0; - comp_params.m_status_output = (flags_and_quality & cFlagPrintStatus) != 0; - - // Create the compressor, initialize it, and process the input - basis_compressor comp; - if (!comp.init(comp_params)) - { - error_printf("basis_compress: basis_compressor::init() failed!\n"); - return nullptr; - } - - basis_compressor::error_code ec = comp.process(); - - if (ec != basis_compressor::cECSuccess) - { - error_printf("basis_compress: basis_compressor::process() failed with error code %u\n", (uint32_t)ec); - return nullptr; - } - - if ((pStats) && (comp.get_opencl_failed())) - { - pStats->m_opencl_failed = true; - } - - // Get the output file data and return it to the caller - void* pFile_data = nullptr; - const uint8_vec* pFile_data_vec = comp_params.m_create_ktx2_file ? &comp.get_output_ktx2_file() : &comp.get_output_basis_file(); - - pFile_data = malloc(pFile_data_vec->size()); - if (!pFile_data) - { - error_printf("basis_compress: Out of memory\n"); - return nullptr; - } - memcpy(pFile_data, pFile_data_vec->get_ptr(), pFile_data_vec->size()); - - *pSize = pFile_data_vec->size(); - - if ((pStats) && (comp.get_stats().size())) - { - *pStats = comp.get_stats()[0]; - } - - return pFile_data; - } - - void* basis_compress( - const uint8_t* pImageRGBA, uint32_t width, uint32_t height, uint32_t pitch_in_pixels, - uint32_t flags_and_quality, float uastc_rdo_quality, - size_t* pSize, - image_stats* pStats) - { - if (!pitch_in_pixels) - pitch_in_pixels = width; - - if ((!pImageRGBA) || (!width) || (!height) || (pitch_in_pixels < width) || (!pSize)) - { - error_printf("basis_compress: Invalid parameter\n"); - assert(0); - return nullptr; - } - - *pSize = 0; - - if ((width > BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION) || (height > BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION)) - { - error_printf("basis_compress: Image too large\n"); - return nullptr; - } - - // Copy the source image - basisu::vector source_image(1); - source_image[0].crop(width, height, width, g_black_color, false); - for (uint32_t y = 0; y < height; y++) - memcpy(source_image[0].get_ptr() + y * width, (const color_rgba*)pImageRGBA + y * pitch_in_pixels, width * sizeof(color_rgba)); - - return basis_compress(source_image, flags_and_quality, uastc_rdo_quality, pSize, pStats); - } - - void basis_free_data(void* p) - { - free(p); - } - - bool basis_benchmark_etc1s_opencl(bool* pOpenCL_failed) - { - if (pOpenCL_failed) - *pOpenCL_failed = false; - - if (!opencl_is_available()) - { - error_printf("basis_benchmark_etc1s_opencl: OpenCL support must be enabled first!\n"); - return false; - } - - const uint32_t W = 1024, H = 1024; - basisu::vector images; - image& img = images.enlarge(1)->resize(W, H); - - const uint32_t NUM_RAND_LETTERS = 6000;// 40000; - - rand r; - r.seed(200); - - for (uint32_t i = 0; i < NUM_RAND_LETTERS; i++) - { - uint32_t x = r.irand(0, W - 1), y = r.irand(0, H - 1); - uint32_t sx = r.irand(1, 4), sy = r.irand(1, 4); - color_rgba c(r.byte(), r.byte(), r.byte(), 255); - - img.debug_text(x, y, sx, sy, c, nullptr, false, "%c", static_cast(r.irand(32, 127))); - } - - //save_png("test.png", img); - - image_stats stats; - - uint32_t flags_and_quality = cFlagSRGB | cFlagThreaded | 255; - size_t comp_size = 0; - - double best_cpu_time = 1e+9f, best_gpu_time = 1e+9f; - - const uint32_t TIMES_TO_ENCODE = 2; - interval_timer tm; - - for (uint32_t i = 0; i < TIMES_TO_ENCODE; i++) - { - tm.start(); - void* pComp_data = basis_compress( - images, - flags_and_quality, 1.0f, - &comp_size, - &stats); - double cpu_time = tm.get_elapsed_secs(); - if (!pComp_data) - { - error_printf("basis_benchmark_etc1s_opencl: basis_compress() failed (CPU)!\n"); - return false; - } - - best_cpu_time = minimum(best_cpu_time, cpu_time); - - basis_free_data(pComp_data); - } - - printf("Best CPU time: %3.3f\n", best_cpu_time); - - for (uint32_t i = 0; i < TIMES_TO_ENCODE; i++) - { - tm.start(); - void* pComp_data = basis_compress( - images, - flags_and_quality | cFlagUseOpenCL, 1.0f, - &comp_size, - &stats); - - if (stats.m_opencl_failed) - { - error_printf("basis_benchmark_etc1s_opencl: OpenCL failed!\n"); - - basis_free_data(pComp_data); - - if (pOpenCL_failed) - *pOpenCL_failed = true; - - return false; - } - - double gpu_time = tm.get_elapsed_secs(); - if (!pComp_data) - { - error_printf("basis_benchmark_etc1s_opencl: basis_compress() failed (GPU)!\n"); - return false; - } - - best_gpu_time = minimum(best_gpu_time, gpu_time); - - basis_free_data(pComp_data); - } - - printf("Best GPU time: %3.3f\n", best_gpu_time); - - return best_gpu_time < best_cpu_time; - } - -} // namespace basisu - - - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_comp.h b/WickedEngine/Utility/basis_universal/encoder/basisu_comp.h deleted file mode 100644 index b6c9fef9e..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_comp.h +++ /dev/null @@ -1,663 +0,0 @@ -// basisu_comp.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_frontend.h" -#include "basisu_backend.h" -#include "basisu_basis_file.h" -#include "../transcoder/basisu_transcoder.h" -#include "basisu_uastc_enc.h" - -#define BASISU_LIB_VERSION 116 -#define BASISU_LIB_VERSION_STRING "1.16" - -#ifndef BASISD_SUPPORT_KTX2 - #error BASISD_SUPPORT_KTX2 is undefined -#endif -#ifndef BASISD_SUPPORT_KTX2_ZSTD - #error BASISD_SUPPORT_KTX2_ZSTD is undefined -#endif - -#if !BASISD_SUPPORT_KTX2 - #error BASISD_SUPPORT_KTX2 must be enabled when building the encoder. To reduce code size if KTX2 support is not needed, set BASISD_SUPPORT_KTX2_ZSTD to 0 -#endif - -namespace basisu -{ - struct opencl_context; - typedef opencl_context* opencl_context_ptr; - - const uint32_t BASISU_MAX_SUPPORTED_TEXTURE_DIMENSION = 16384; - - // Allow block's color distance to increase by 1.5 while searching for an alternative nearby endpoint. - const float BASISU_DEFAULT_ENDPOINT_RDO_THRESH = 1.5f; - - // Allow block's color distance to increase by 1.25 while searching the selector history buffer for a close enough match. - const float BASISU_DEFAULT_SELECTOR_RDO_THRESH = 1.25f; - - const int BASISU_DEFAULT_QUALITY = 128; - const float BASISU_DEFAULT_HYBRID_SEL_CB_QUALITY_THRESH = 2.0f; - - const uint32_t BASISU_MAX_IMAGE_DIMENSION = 16384; - const uint32_t BASISU_QUALITY_MIN = 1; - const uint32_t BASISU_QUALITY_MAX = 255; - const uint32_t BASISU_MAX_ENDPOINT_CLUSTERS = basisu_frontend::cMaxEndpointClusters; - const uint32_t BASISU_MAX_SELECTOR_CLUSTERS = basisu_frontend::cMaxSelectorClusters; - - const uint32_t BASISU_MAX_SLICES = 0xFFFFFF; - - const int BASISU_RDO_UASTC_DICT_SIZE_DEFAULT = 4096; // 32768; - const int BASISU_RDO_UASTC_DICT_SIZE_MIN = 64; - const int BASISU_RDO_UASTC_DICT_SIZE_MAX = 65536; - - struct image_stats - { - image_stats() - { - clear(); - } - - void clear() - { - m_filename.clear(); - m_width = 0; - m_height = 0; - - m_basis_rgb_avg_psnr = 0.0f; - m_basis_rgba_avg_psnr = 0.0f; - m_basis_a_avg_psnr = 0.0f; - m_basis_luma_709_psnr = 0.0f; - m_basis_luma_601_psnr = 0.0f; - m_basis_luma_709_ssim = 0.0f; - - m_bc7_rgb_avg_psnr = 0.0f; - m_bc7_rgba_avg_psnr = 0.0f; - m_bc7_a_avg_psnr = 0.0f; - m_bc7_luma_709_psnr = 0.0f; - m_bc7_luma_601_psnr = 0.0f; - m_bc7_luma_709_ssim = 0.0f; - - m_best_etc1s_rgb_avg_psnr = 0.0f; - m_best_etc1s_luma_709_psnr = 0.0f; - m_best_etc1s_luma_601_psnr = 0.0f; - m_best_etc1s_luma_709_ssim = 0.0f; - - m_opencl_failed = false; - } - - std::string m_filename; - uint32_t m_width; - uint32_t m_height; - - // .basis compressed (ETC1S or UASTC statistics) - float m_basis_rgb_avg_psnr; - float m_basis_rgba_avg_psnr; - float m_basis_a_avg_psnr; - float m_basis_luma_709_psnr; - float m_basis_luma_601_psnr; - float m_basis_luma_709_ssim; - - // BC7 statistics - float m_bc7_rgb_avg_psnr; - float m_bc7_rgba_avg_psnr; - float m_bc7_a_avg_psnr; - float m_bc7_luma_709_psnr; - float m_bc7_luma_601_psnr; - float m_bc7_luma_709_ssim; - - // Highest achievable quality ETC1S statistics - float m_best_etc1s_rgb_avg_psnr; - float m_best_etc1s_luma_709_psnr; - float m_best_etc1s_luma_601_psnr; - float m_best_etc1s_luma_709_ssim; - - bool m_opencl_failed; - }; - - template - struct bool_param - { - bool_param() : - m_value(def), - m_changed(false) - { - } - - void clear() - { - m_value = def; - m_changed = false; - } - - operator bool() const - { - return m_value; - } - - bool operator= (bool v) - { - m_value = v; - m_changed = true; - return m_value; - } - - bool was_changed() const { return m_changed; } - void set_changed(bool flag) { m_changed = flag; } - - bool m_value; - bool m_changed; - }; - - template - struct param - { - param(T def, T min_v, T max_v) : - m_value(def), - m_def(def), - m_min(min_v), - m_max(max_v), - m_changed(false) - { - } - - void clear() - { - m_value = m_def; - m_changed = false; - } - - operator T() const - { - return m_value; - } - - T operator= (T v) - { - m_value = clamp(v, m_min, m_max); - m_changed = true; - return m_value; - } - - T operator *= (T v) - { - m_value *= v; - m_changed = true; - return m_value; - } - - bool was_changed() const { return m_changed; } - void set_changed(bool flag) { m_changed = flag; } - - T m_value; - T m_def; - T m_min; - T m_max; - bool m_changed; - }; - - struct basis_compressor_params - { - basis_compressor_params() : - m_compression_level((int)BASISU_DEFAULT_COMPRESSION_LEVEL, 0, (int)BASISU_MAX_COMPRESSION_LEVEL), - m_selector_rdo_thresh(BASISU_DEFAULT_SELECTOR_RDO_THRESH, 0.0f, 1e+10f), - m_endpoint_rdo_thresh(BASISU_DEFAULT_ENDPOINT_RDO_THRESH, 0.0f, 1e+10f), - m_mip_scale(1.0f, .000125f, 4.0f), - m_mip_smallest_dimension(1, 1, 16384), - m_max_endpoint_clusters(512), - m_max_selector_clusters(512), - m_quality_level(-1), - m_pack_uastc_flags(cPackUASTCLevelDefault), - m_rdo_uastc_quality_scalar(1.0f, 0.001f, 50.0f), - m_rdo_uastc_dict_size(BASISU_RDO_UASTC_DICT_SIZE_DEFAULT, BASISU_RDO_UASTC_DICT_SIZE_MIN, BASISU_RDO_UASTC_DICT_SIZE_MAX), - m_rdo_uastc_max_smooth_block_error_scale(UASTC_RDO_DEFAULT_SMOOTH_BLOCK_MAX_ERROR_SCALE, 1.0f, 300.0f), - m_rdo_uastc_smooth_block_max_std_dev(UASTC_RDO_DEFAULT_MAX_SMOOTH_BLOCK_STD_DEV, .01f, 65536.0f), - m_rdo_uastc_max_allowed_rms_increase_ratio(UASTC_RDO_DEFAULT_MAX_ALLOWED_RMS_INCREASE_RATIO, .01f, 100.0f), - m_rdo_uastc_skip_block_rms_thresh(UASTC_RDO_DEFAULT_SKIP_BLOCK_RMS_THRESH, .01f, 100.0f), - m_resample_width(0, 1, 16384), - m_resample_height(0, 1, 16384), - m_resample_factor(0.0f, .00125f, 100.0f), - m_ktx2_uastc_supercompression(basist::KTX2_SS_NONE), - m_ktx2_zstd_supercompression_level(6, INT_MIN, INT_MAX), - m_pJob_pool(nullptr) - { - clear(); - } - - void clear() - { - m_uastc.clear(); - m_use_opencl.clear(); - m_status_output.clear(); - - m_source_filenames.clear(); - m_source_alpha_filenames.clear(); - - m_source_images.clear(); - m_source_mipmap_images.clear(); - - m_out_filename.clear(); - - m_y_flip.clear(); - m_debug.clear(); - m_validate_etc1s.clear(); - m_debug_images.clear(); - m_perceptual.clear(); - m_no_selector_rdo.clear(); - m_selector_rdo_thresh.clear(); - m_read_source_images.clear(); - m_write_output_basis_files.clear(); - m_compression_level.clear(); - m_compute_stats.clear(); - m_print_stats.clear(); - m_check_for_alpha.clear(); - m_force_alpha.clear(); - m_multithreading.clear(); - m_swizzle[0] = 0; - m_swizzle[1] = 1; - m_swizzle[2] = 2; - m_swizzle[3] = 3; - m_renormalize.clear(); - m_disable_hierarchical_endpoint_codebooks.clear(); - - m_no_endpoint_rdo.clear(); - m_endpoint_rdo_thresh.clear(); - - m_mip_gen.clear(); - m_mip_scale.clear(); - m_mip_filter = "kaiser"; - m_mip_scale = 1.0f; - m_mip_srgb.clear(); - m_mip_premultiplied.clear(); - m_mip_renormalize.clear(); - m_mip_wrapping.clear(); - m_mip_fast.clear(); - m_mip_smallest_dimension.clear(); - - m_max_endpoint_clusters = 0; - m_max_selector_clusters = 0; - m_quality_level = -1; - - m_tex_type = basist::cBASISTexType2D; - m_userdata0 = 0; - m_userdata1 = 0; - m_us_per_frame = 0; - - m_pack_uastc_flags = cPackUASTCLevelDefault; - m_rdo_uastc.clear(); - m_rdo_uastc_quality_scalar.clear(); - m_rdo_uastc_max_smooth_block_error_scale.clear(); - m_rdo_uastc_smooth_block_max_std_dev.clear(); - m_rdo_uastc_max_allowed_rms_increase_ratio.clear(); - m_rdo_uastc_skip_block_rms_thresh.clear(); - m_rdo_uastc_favor_simpler_modes_in_rdo_mode.clear(); - m_rdo_uastc_multithreading.clear(); - - m_resample_width.clear(); - m_resample_height.clear(); - m_resample_factor.clear(); - - m_pGlobal_codebooks = nullptr; - - m_create_ktx2_file.clear(); - m_ktx2_uastc_supercompression = basist::KTX2_SS_NONE; - m_ktx2_key_values.clear(); - m_ktx2_zstd_supercompression_level.clear(); - m_ktx2_srgb_transfer_func.clear(); - - m_validate_output_data.clear(); - - m_pJob_pool = nullptr; - } - - // True to generate UASTC .basis file data, otherwise ETC1S. - bool_param m_uastc; - - bool_param m_use_opencl; - - // If m_read_source_images is true, m_source_filenames (and optionally m_source_alpha_filenames) contains the filenames of PNG images to read. - // Otherwise, the compressor processes the images in m_source_images. - basisu::vector m_source_filenames; - basisu::vector m_source_alpha_filenames; - - basisu::vector m_source_images; - - // Stores mipmaps starting from level 1. Level 0 is still stored in m_source_images, as usual. - // If m_source_mipmaps isn't empty, automatic mipmap generation isn't done. m_source_mipmaps.size() MUST equal m_source_images.size() or the compressor returns an error. - // The compressor applies the user-provided swizzling (in m_swizzle) to these images. - basisu::vector< basisu::vector > m_source_mipmap_images; - - // Filename of the output basis file - std::string m_out_filename; - - // The params are done this way so we can detect when the user has explictly changed them. - - // Flip images across Y axis - bool_param m_y_flip; - - // If true, the compressor will print basis status to stdout during compression. - bool_param m_status_output; - - // Output debug information during compression - bool_param m_debug; - bool_param m_validate_etc1s; - - // m_debug_images is pretty slow - bool_param m_debug_images; - - // ETC1S compression level, from 0 to BASISU_MAX_COMPRESSION_LEVEL (higher is slower). - // This parameter controls numerous internal encoding speed vs. compression efficiency/performance tradeoffs. - // Note this is NOT the same as the ETC1S quality level, and most users shouldn't change this. - param m_compression_level; - - // Use perceptual sRGB colorspace metrics instead of linear - bool_param m_perceptual; - - // Disable selector RDO, for faster compression but larger files - bool_param m_no_selector_rdo; - param m_selector_rdo_thresh; - - bool_param m_no_endpoint_rdo; - param m_endpoint_rdo_thresh; - - // Read source images from m_source_filenames/m_source_alpha_filenames - bool_param m_read_source_images; - - // Write the output basis file to disk using m_out_filename - bool_param m_write_output_basis_files; - - // Compute and display image metrics - bool_param m_compute_stats; - - // Print stats to stdout, if m_compute_stats is true. - bool_param m_print_stats; - - // Check to see if any input image has an alpha channel, if so then the output basis file will have alpha channels - bool_param m_check_for_alpha; - - // Always put alpha slices in the output basis file, even when the input doesn't have alpha - bool_param m_force_alpha; - bool_param m_multithreading; - - // Split the R channel to RGB and the G channel to alpha, then write a basis file with alpha channels - char m_swizzle[4]; - - bool_param m_renormalize; - - // If true the front end will not use 2 level endpoint codebook searching, for slightly higher quality but much slower execution. - // Note some m_compression_level's disable this automatically. - bool_param m_disable_hierarchical_endpoint_codebooks; - - // mipmap generation parameters - bool_param m_mip_gen; - param m_mip_scale; - std::string m_mip_filter; - bool_param m_mip_srgb; - bool_param m_mip_premultiplied; // not currently supported - bool_param m_mip_renormalize; - bool_param m_mip_wrapping; - bool_param m_mip_fast; - param m_mip_smallest_dimension; - - // Codebook size (quality) control. - // If m_quality_level != -1, it controls the quality level. It ranges from [1,255] or [BASISU_QUALITY_MIN, BASISU_QUALITY_MAX]. - // Otherwise m_max_endpoint_clusters/m_max_selector_clusters controls the codebook sizes directly. - uint32_t m_max_endpoint_clusters; - uint32_t m_max_selector_clusters; - int m_quality_level; - - // m_tex_type, m_userdata0, m_userdata1, m_framerate - These fields go directly into the Basis file header. - basist::basis_texture_type m_tex_type; - uint32_t m_userdata0; - uint32_t m_userdata1; - uint32_t m_us_per_frame; - - // cPackUASTCLevelDefault, etc. - uint32_t m_pack_uastc_flags; - bool_param m_rdo_uastc; - param m_rdo_uastc_quality_scalar; - param m_rdo_uastc_dict_size; - param m_rdo_uastc_max_smooth_block_error_scale; - param m_rdo_uastc_smooth_block_max_std_dev; - param m_rdo_uastc_max_allowed_rms_increase_ratio; - param m_rdo_uastc_skip_block_rms_thresh; - bool_param m_rdo_uastc_favor_simpler_modes_in_rdo_mode; - bool_param m_rdo_uastc_multithreading; - - param m_resample_width; - param m_resample_height; - param m_resample_factor; - - const basist::basisu_lowlevel_etc1s_transcoder *m_pGlobal_codebooks; - - // KTX2 specific parameters. - // Internally, the compressor always creates a .basis file then it converts that lossless to KTX2. - bool_param m_create_ktx2_file; - basist::ktx2_supercompression m_ktx2_uastc_supercompression; - basist::ktx2_transcoder::key_value_vec m_ktx2_key_values; - param m_ktx2_zstd_supercompression_level; - bool_param m_ktx2_srgb_transfer_func; - - bool_param m_validate_output_data; - - job_pool *m_pJob_pool; - }; - - // Important: basisu_encoder_init() MUST be called first before using this class. - class basis_compressor - { - BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(basis_compressor); - - public: - basis_compressor(); - ~basis_compressor(); - - // Note it *should* be possible to call init() multiple times with different inputs, but this scenario isn't well tested. Ideally, create 1 object, compress, then delete it. - bool init(const basis_compressor_params ¶ms); - - enum error_code - { - cECSuccess = 0, - cECFailedInitializing, - cECFailedReadingSourceImages, - cECFailedValidating, - cECFailedEncodeUASTC, - cECFailedFrontEnd, - cECFailedFontendExtract, - cECFailedBackend, - cECFailedCreateBasisFile, - cECFailedWritingOutput, - cECFailedUASTCRDOPostProcess, - cECFailedCreateKTX2File - }; - - error_code process(); - - // The output .basis file will always be valid of process() succeeded. - const uint8_vec &get_output_basis_file() const { return m_output_basis_file; } - - // The output .ktx2 file will only be valid if m_create_ktx2_file was true and process() succeeded. - const uint8_vec& get_output_ktx2_file() const { return m_output_ktx2_file; } - - const basisu::vector &get_stats() const { return m_stats; } - - uint32_t get_basis_file_size() const { return m_basis_file_size; } - double get_basis_bits_per_texel() const { return m_basis_bits_per_texel; } - - bool get_any_source_image_has_alpha() const { return m_any_source_image_has_alpha; } - - bool get_opencl_failed() const { return m_opencl_failed; } - - private: - basis_compressor_params m_params; - - opencl_context_ptr m_pOpenCL_context; - - basisu::vector m_slice_images; - - basisu::vector m_stats; - - uint32_t m_basis_file_size; - double m_basis_bits_per_texel; - - basisu_backend_slice_desc_vec m_slice_descs; - - uint32_t m_total_blocks; - - basisu_frontend m_frontend; - pixel_block_vec m_source_blocks; - - basisu::vector m_frontend_output_textures; - - basisu::vector m_best_etc1s_images; - basisu::vector m_best_etc1s_images_unpacked; - - basisu_backend m_backend; - - basisu_file m_basis_file; - - basisu::vector m_decoded_output_textures; - basisu::vector m_decoded_output_textures_unpacked; - basisu::vector m_decoded_output_textures_bc7; - basisu::vector m_decoded_output_textures_unpacked_bc7; - - uint8_vec m_output_basis_file; - uint8_vec m_output_ktx2_file; - - basisu::vector m_uastc_slice_textures; - basisu_backend_output m_uastc_backend_output; - - bool m_any_source_image_has_alpha; - - bool m_opencl_failed; - - bool read_source_images(); - bool extract_source_blocks(); - bool process_frontend(); - bool extract_frontend_texture_data(); - bool process_backend(); - bool create_basis_file_and_transcode(); - bool write_output_files_and_compute_stats(); - error_code encode_slices_to_uastc(); - bool generate_mipmaps(const image &img, basisu::vector &mips, bool has_alpha); - bool validate_texture_type_constraints(); - bool validate_ktx2_constraints(); - void get_dfd(uint8_vec& dfd, const basist::ktx2_header& hdr); - bool create_ktx2_file(); - }; - - // Alternative simple C-style wrapper API around the basis_compressor class. - // This doesn't expose every encoder feature, but it's enough to get going. - // Important: basisu_encoder_init() MUST be called first before calling these functions. - // - // Input parameters: - // source_images: Array of "image" objects, one per mipmap level, largest mipmap level first. - // OR - // pImageRGBA: pointer to a 32-bpp RGBx or RGBA raster image, R first in memory, A last. Top scanline first in memory. - // width/height/pitch_in_pixels: dimensions of pImageRGBA - // - // flags_and_quality: Combination of the above flags logically OR'd with the ETC1S or UASTC level, i.e. "cFlagSRGB | cFlagGenMipsClamp | cFlagThreaded | 128" or "cFlagSRGB | cFlagGenMipsClamp | cFlagUASTC | cFlagThreaded | cPackUASTCLevelDefault". - // In ETC1S mode, the lower 8-bits are the ETC1S quality level which ranges from [1,255] (higher=better quality/larger files) - // In UASTC mode, the lower 8-bits are the UASTC pack level (see cPackUASTCLevelFastest, etc.). Fastest/lowest quality is 0, so be sure to set it correctly. - // - // uastc_rdo_quality: Float UASTC RDO quality level (0=no change, higher values lower quality but increase compressibility, initially try .5-1.5) - // - // pSize: Returns the output data's compressed size in bytes - // - // Return value is the compressed .basis or .ktx2 file data, or nullptr on failure. Must call basis_free() to free it. - enum - { - cFlagUseOpenCL = 1 << 8, // use OpenCL if available - cFlagThreaded = 1 << 9, // use multiple threads for compression - cFlagDebug = 1 << 10, // enable debug output - - cFlagKTX2 = 1 << 11, // generate a KTX2 file - cFlagKTX2UASTCSuperCompression = 1 << 12, // use KTX2 Zstd supercompression on UASTC files - - cFlagSRGB = 1 << 13, // input texture is sRGB, use perceptual colorspace metrics, also use sRGB filtering during mipmap gen, and also sets KTX2 output transfer func to sRGB - cFlagGenMipsClamp = 1 << 14, // generate mipmaps with clamp addressing - cFlagGenMipsWrap = 1 << 15, // generate mipmaps with wrap addressing - - cFlagYFlip = 1 << 16, // flip source image on Y axis before compression - - cFlagUASTC = 1 << 17, // use UASTC compression vs. ETC1S - cFlagUASTCRDO = 1 << 18, // use RDO postprocessing when generating UASTC files (must set uastc_rdo_quality to the quality scalar) - - cFlagPrintStats = 1 << 19, // print image stats to stdout - cFlagPrintStatus = 1 << 20 // print status to stdout - }; - - // This function accepts an array of source images. - // If more than one image is provided, it's assumed the images form a mipmap pyramid and automatic mipmap generation is disabled. - // Returns a pointer to the compressed .basis or .ktx2 file data. *pSize is the size of the compressed data. The returned block must be freed using basis_free_data(). - // basisu_encoder_init() MUST be called first! - void* basis_compress( - const basisu::vector &source_images, - uint32_t flags_and_quality, float uastc_rdo_quality, - size_t* pSize, - image_stats* pStats = nullptr); - - // This function only accepts a single source image. - void* basis_compress( - const uint8_t* pImageRGBA, uint32_t width, uint32_t height, uint32_t pitch_in_pixels, - uint32_t flags_and_quality, float uastc_rdo_quality, - size_t* pSize, - image_stats* pStats = nullptr); - - // Frees the dynamically allocated file data returned by basis_compress(). - void basis_free_data(void* p); - - // Runs a short benchmark using synthetic image data to time OpenCL encoding vs. CPU encoding, with multithreading enabled. - // Returns true if opencl is worth using on this system, otherwise false. - // If pOpenCL_failed is not null, it will be set to true if OpenCL encoding failed *on this particular machine/driver/BasisU version* and the encoder falled back to CPU encoding. - // basisu_encoder_init() MUST be called first. If OpenCL support wasn't enabled this always returns false. - bool basis_benchmark_etc1s_opencl(bool *pOpenCL_failed = nullptr); - - // Parallel compression API - struct parallel_results - { - double m_total_time; - basis_compressor::error_code m_error_code; - uint8_vec m_basis_file; - uint8_vec m_ktx2_file; - basisu::vector m_stats; - double m_basis_bits_per_texel; - bool m_any_source_image_has_alpha; - - parallel_results() - { - clear(); - } - - void clear() - { - m_total_time = 0.0f; - m_error_code = basis_compressor::cECFailedInitializing; - m_basis_file.clear(); - m_ktx2_file.clear(); - m_stats.clear(); - m_basis_bits_per_texel = 0.0f; - m_any_source_image_has_alpha = false; - } - }; - - // Compresses an array of input textures across total_threads threads using the basis_compressor class. - // Compressing multiple textures at a time is substantially more efficient than just compressing one at a time. - // total_threads must be >= 1. - bool basis_parallel_compress( - uint32_t total_threads, - const basisu::vector ¶ms_vec, - basisu::vector< parallel_results > &results_vec); - -} // namespace basisu - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_enc.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_enc.cpp deleted file mode 100644 index 99ef7ab11..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_enc.cpp +++ /dev/null @@ -1,2109 +0,0 @@ -// basisu_enc.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_enc.h" -#include "basisu_resampler.h" -#include "basisu_resampler_filters.h" -#include "basisu_etc.h" -#include "../transcoder/basisu_transcoder.h" -#include "basisu_bc7enc.h" -#include "jpgd.h" -#include "pvpngreader.h" -#include "basisu_opencl.h" -#include - -#define MINIZ_HEADER_FILE_ONLY -#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES -#include "basisu_miniz.h" - -#if defined(_WIN32) -// For QueryPerformanceCounter/QueryPerformanceFrequency -#define WIN32_LEAN_AND_MEAN -#include -#endif - -namespace basisu -{ - uint64_t interval_timer::g_init_ticks, interval_timer::g_freq; - double interval_timer::g_timer_freq; -#if BASISU_SUPPORT_SSE - bool g_cpu_supports_sse41; -#endif - - uint8_t g_hamming_dist[256] = - { - 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7, - 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8 - }; - - // This is a Public Domain 8x8 font from here: - // https://github.com/dhepper/font8x8/blob/master/font8x8_basic.h - const uint8_t g_debug_font8x8_basic[127 - 32 + 1][8] = - { - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0020 ( ) - { 0x18, 0x3C, 0x3C, 0x18, 0x18, 0x00, 0x18, 0x00}, // U+0021 (!) - { 0x36, 0x36, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0022 (") - { 0x36, 0x36, 0x7F, 0x36, 0x7F, 0x36, 0x36, 0x00}, // U+0023 (#) - { 0x0C, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x0C, 0x00}, // U+0024 ($) - { 0x00, 0x63, 0x33, 0x18, 0x0C, 0x66, 0x63, 0x00}, // U+0025 (%) - { 0x1C, 0x36, 0x1C, 0x6E, 0x3B, 0x33, 0x6E, 0x00}, // U+0026 (&) - { 0x06, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0027 (') - { 0x18, 0x0C, 0x06, 0x06, 0x06, 0x0C, 0x18, 0x00}, // U+0028 (() - { 0x06, 0x0C, 0x18, 0x18, 0x18, 0x0C, 0x06, 0x00}, // U+0029 ()) - { 0x00, 0x66, 0x3C, 0xFF, 0x3C, 0x66, 0x00, 0x00}, // U+002A (*) - { 0x00, 0x0C, 0x0C, 0x3F, 0x0C, 0x0C, 0x00, 0x00}, // U+002B (+) - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+002C (,) - { 0x00, 0x00, 0x00, 0x3F, 0x00, 0x00, 0x00, 0x00}, // U+002D (-) - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+002E (.) - { 0x60, 0x30, 0x18, 0x0C, 0x06, 0x03, 0x01, 0x00}, // U+002F (/) - { 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0) - { 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1) - { 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2) - { 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3) - { 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4) - { 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5) - { 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6) - { 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7) - { 0x1E, 0x33, 0x33, 0x1E, 0x33, 0x33, 0x1E, 0x00}, // U+0038 (8) - { 0x1E, 0x33, 0x33, 0x3E, 0x30, 0x18, 0x0E, 0x00}, // U+0039 (9) - { 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x00}, // U+003A (:) - { 0x00, 0x0C, 0x0C, 0x00, 0x00, 0x0C, 0x0C, 0x06}, // U+003B (;) - { 0x18, 0x0C, 0x06, 0x03, 0x06, 0x0C, 0x18, 0x00}, // U+003C (<) - { 0x00, 0x00, 0x3F, 0x00, 0x00, 0x3F, 0x00, 0x00}, // U+003D (=) - { 0x06, 0x0C, 0x18, 0x30, 0x18, 0x0C, 0x06, 0x00}, // U+003E (>) - { 0x1E, 0x33, 0x30, 0x18, 0x0C, 0x00, 0x0C, 0x00}, // U+003F (?) - { 0x3E, 0x63, 0x7B, 0x7B, 0x7B, 0x03, 0x1E, 0x00}, // U+0040 (@) - { 0x0C, 0x1E, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x00}, // U+0041 (A) - { 0x3F, 0x66, 0x66, 0x3E, 0x66, 0x66, 0x3F, 0x00}, // U+0042 (B) - { 0x3C, 0x66, 0x03, 0x03, 0x03, 0x66, 0x3C, 0x00}, // U+0043 (C) - { 0x1F, 0x36, 0x66, 0x66, 0x66, 0x36, 0x1F, 0x00}, // U+0044 (D) - { 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x46, 0x7F, 0x00}, // U+0045 (E) - { 0x7F, 0x46, 0x16, 0x1E, 0x16, 0x06, 0x0F, 0x00}, // U+0046 (F) - { 0x3C, 0x66, 0x03, 0x03, 0x73, 0x66, 0x7C, 0x00}, // U+0047 (G) - { 0x33, 0x33, 0x33, 0x3F, 0x33, 0x33, 0x33, 0x00}, // U+0048 (H) - { 0x1E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0049 (I) - { 0x78, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E, 0x00}, // U+004A (J) - { 0x67, 0x66, 0x36, 0x1E, 0x36, 0x66, 0x67, 0x00}, // U+004B (K) - { 0x0F, 0x06, 0x06, 0x06, 0x46, 0x66, 0x7F, 0x00}, // U+004C (L) - { 0x63, 0x77, 0x7F, 0x7F, 0x6B, 0x63, 0x63, 0x00}, // U+004D (M) - { 0x63, 0x67, 0x6F, 0x7B, 0x73, 0x63, 0x63, 0x00}, // U+004E (N) - { 0x1C, 0x36, 0x63, 0x63, 0x63, 0x36, 0x1C, 0x00}, // U+004F (O) - { 0x3F, 0x66, 0x66, 0x3E, 0x06, 0x06, 0x0F, 0x00}, // U+0050 (P) - { 0x1E, 0x33, 0x33, 0x33, 0x3B, 0x1E, 0x38, 0x00}, // U+0051 (Q) - { 0x3F, 0x66, 0x66, 0x3E, 0x36, 0x66, 0x67, 0x00}, // U+0052 (R) - { 0x1E, 0x33, 0x07, 0x0E, 0x38, 0x33, 0x1E, 0x00}, // U+0053 (S) - { 0x3F, 0x2D, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0054 (T) - { 0x33, 0x33, 0x33, 0x33, 0x33, 0x33, 0x3F, 0x00}, // U+0055 (U) - { 0x33, 0x33, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0056 (V) - { 0x63, 0x63, 0x63, 0x6B, 0x7F, 0x77, 0x63, 0x00}, // U+0057 (W) - { 0x63, 0x63, 0x36, 0x1C, 0x1C, 0x36, 0x63, 0x00}, // U+0058 (X) - { 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x0C, 0x1E, 0x00}, // U+0059 (Y) - { 0x7F, 0x63, 0x31, 0x18, 0x4C, 0x66, 0x7F, 0x00}, // U+005A (Z) - { 0x1E, 0x06, 0x06, 0x06, 0x06, 0x06, 0x1E, 0x00}, // U+005B ([) - { 0x03, 0x06, 0x0C, 0x18, 0x30, 0x60, 0x40, 0x00}, // U+005C (\) - { 0x1E, 0x18, 0x18, 0x18, 0x18, 0x18, 0x1E, 0x00}, // U+005D (]) - { 0x08, 0x1C, 0x36, 0x63, 0x00, 0x00, 0x00, 0x00}, // U+005E (^) - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xFF}, // U+005F (_) - { 0x0C, 0x0C, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+0060 (`) - { 0x00, 0x00, 0x1E, 0x30, 0x3E, 0x33, 0x6E, 0x00}, // U+0061 (a) - { 0x07, 0x06, 0x06, 0x3E, 0x66, 0x66, 0x3B, 0x00}, // U+0062 (b) - { 0x00, 0x00, 0x1E, 0x33, 0x03, 0x33, 0x1E, 0x00}, // U+0063 (c) - { 0x38, 0x30, 0x30, 0x3e, 0x33, 0x33, 0x6E, 0x00}, // U+0064 (d) - { 0x00, 0x00, 0x1E, 0x33, 0x3f, 0x03, 0x1E, 0x00}, // U+0065 (e) - { 0x1C, 0x36, 0x06, 0x0f, 0x06, 0x06, 0x0F, 0x00}, // U+0066 (f) - { 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0067 (g) - { 0x07, 0x06, 0x36, 0x6E, 0x66, 0x66, 0x67, 0x00}, // U+0068 (h) - { 0x0C, 0x00, 0x0E, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+0069 (i) - { 0x30, 0x00, 0x30, 0x30, 0x30, 0x33, 0x33, 0x1E}, // U+006A (j) - { 0x07, 0x06, 0x66, 0x36, 0x1E, 0x36, 0x67, 0x00}, // U+006B (k) - { 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x0C, 0x1E, 0x00}, // U+006C (l) - { 0x00, 0x00, 0x33, 0x7F, 0x7F, 0x6B, 0x63, 0x00}, // U+006D (m) - { 0x00, 0x00, 0x1F, 0x33, 0x33, 0x33, 0x33, 0x00}, // U+006E (n) - { 0x00, 0x00, 0x1E, 0x33, 0x33, 0x33, 0x1E, 0x00}, // U+006F (o) - { 0x00, 0x00, 0x3B, 0x66, 0x66, 0x3E, 0x06, 0x0F}, // U+0070 (p) - { 0x00, 0x00, 0x6E, 0x33, 0x33, 0x3E, 0x30, 0x78}, // U+0071 (q) - { 0x00, 0x00, 0x3B, 0x6E, 0x66, 0x06, 0x0F, 0x00}, // U+0072 (r) - { 0x00, 0x00, 0x3E, 0x03, 0x1E, 0x30, 0x1F, 0x00}, // U+0073 (s) - { 0x08, 0x0C, 0x3E, 0x0C, 0x0C, 0x2C, 0x18, 0x00}, // U+0074 (t) - { 0x00, 0x00, 0x33, 0x33, 0x33, 0x33, 0x6E, 0x00}, // U+0075 (u) - { 0x00, 0x00, 0x33, 0x33, 0x33, 0x1E, 0x0C, 0x00}, // U+0076 (v) - { 0x00, 0x00, 0x63, 0x6B, 0x7F, 0x7F, 0x36, 0x00}, // U+0077 (w) - { 0x00, 0x00, 0x63, 0x36, 0x1C, 0x36, 0x63, 0x00}, // U+0078 (x) - { 0x00, 0x00, 0x33, 0x33, 0x33, 0x3E, 0x30, 0x1F}, // U+0079 (y) - { 0x00, 0x00, 0x3F, 0x19, 0x0C, 0x26, 0x3F, 0x00}, // U+007A (z) - { 0x38, 0x0C, 0x0C, 0x07, 0x0C, 0x0C, 0x38, 0x00}, // U+007B ({) - { 0x18, 0x18, 0x18, 0x00, 0x18, 0x18, 0x18, 0x00}, // U+007C (|) - { 0x07, 0x0C, 0x0C, 0x38, 0x0C, 0x0C, 0x07, 0x00}, // U+007D (}) - { 0x6E, 0x3B, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00}, // U+007E (~) - { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00} // U+007F - }; - - bool g_library_initialized; - std::mutex g_encoder_init_mutex; - - // Encoder library initialization (just call once at startup) - void basisu_encoder_init(bool use_opencl, bool opencl_force_serialization) - { - std::lock_guard lock(g_encoder_init_mutex); - - if (g_library_initialized) - return; - - detect_sse41(); - - basist::basisu_transcoder_init(); - pack_etc1_solid_color_init(); - //uastc_init(); - bc7enc_compress_block_init(); // must be after uastc_init() - - // Don't bother initializing the OpenCL module at all if it's been completely disabled. - if (use_opencl) - { - opencl_init(opencl_force_serialization); - } - - interval_timer::init(); // make sure interval_timer globals are initialized from main thread to avoid TSAN reports - - g_library_initialized = true; - } - - void basisu_encoder_deinit() - { - opencl_deinit(); - - g_library_initialized = false; - } - - void error_vprintf(const char* pFmt, va_list args) - { - char buf[8192]; - -#ifdef _WIN32 - vsprintf_s(buf, sizeof(buf), pFmt, args); -#else - vsnprintf(buf, sizeof(buf), pFmt, args); -#endif - - fprintf(stderr, "ERROR: %s", buf); - } - - void error_printf(const char *pFmt, ...) - { - va_list args; - va_start(args, pFmt); - error_vprintf(pFmt, args); - va_end(args); - } - -#if defined(_WIN32) - inline void query_counter(timer_ticks* pTicks) - { - QueryPerformanceCounter(reinterpret_cast(pTicks)); - } - inline void query_counter_frequency(timer_ticks* pTicks) - { - QueryPerformanceFrequency(reinterpret_cast(pTicks)); - } -#elif defined(__APPLE__) || defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__EMSCRIPTEN__) -#include - inline void query_counter(timer_ticks* pTicks) - { - struct timeval cur_time; - gettimeofday(&cur_time, NULL); - *pTicks = static_cast(cur_time.tv_sec) * 1000000ULL + static_cast(cur_time.tv_usec); - } - inline void query_counter_frequency(timer_ticks* pTicks) - { - *pTicks = 1000000; - } -#elif defined(__GNUC__) -#include - inline void query_counter(timer_ticks* pTicks) - { - struct timeval cur_time; - gettimeofday(&cur_time, NULL); - *pTicks = static_cast(cur_time.tv_sec) * 1000000ULL + static_cast(cur_time.tv_usec); - } - inline void query_counter_frequency(timer_ticks* pTicks) - { - *pTicks = 1000000; - } -#else -#error TODO -#endif - - interval_timer::interval_timer() : m_start_time(0), m_stop_time(0), m_started(false), m_stopped(false) - { - if (!g_timer_freq) - init(); - } - - void interval_timer::start() - { - query_counter(&m_start_time); - m_started = true; - m_stopped = false; - } - - void interval_timer::stop() - { - assert(m_started); - query_counter(&m_stop_time); - m_stopped = true; - } - - double interval_timer::get_elapsed_secs() const - { - assert(m_started); - if (!m_started) - return 0; - - timer_ticks stop_time = m_stop_time; - if (!m_stopped) - query_counter(&stop_time); - - timer_ticks delta = stop_time - m_start_time; - return delta * g_timer_freq; - } - - void interval_timer::init() - { - if (!g_timer_freq) - { - query_counter_frequency(&g_freq); - g_timer_freq = 1.0f / g_freq; - query_counter(&g_init_ticks); - } - } - - timer_ticks interval_timer::get_ticks() - { - if (!g_timer_freq) - init(); - timer_ticks ticks; - query_counter(&ticks); - return ticks - g_init_ticks; - } - - double interval_timer::ticks_to_secs(timer_ticks ticks) - { - if (!g_timer_freq) - init(); - return ticks * g_timer_freq; - } - - const uint32_t MAX_32BIT_ALLOC_SIZE = 250000000; - - bool load_tga(const char* pFilename, image& img) - { - int w = 0, h = 0, n_chans = 0; - uint8_t* pImage_data = read_tga(pFilename, w, h, n_chans); - - if ((!pImage_data) || (!w) || (!h) || ((n_chans != 3) && (n_chans != 4))) - { - error_printf("Failed loading .TGA image \"%s\"!\n", pFilename); - - if (pImage_data) - free(pImage_data); - - return false; - } - - if (sizeof(void *) == sizeof(uint32_t)) - { - if ((w * h * n_chans) > MAX_32BIT_ALLOC_SIZE) - { - error_printf("Image \"%s\" is too large (%ux%u) to process in a 32-bit build!\n", pFilename, w, h); - - if (pImage_data) - free(pImage_data); - - return false; - } - } - - img.resize(w, h); - - const uint8_t *pSrc = pImage_data; - for (int y = 0; y < h; y++) - { - color_rgba *pDst = &img(0, y); - - for (int x = 0; x < w; x++) - { - pDst->r = pSrc[0]; - pDst->g = pSrc[1]; - pDst->b = pSrc[2]; - pDst->a = (n_chans == 3) ? 255 : pSrc[3]; - - pSrc += n_chans; - ++pDst; - } - } - - free(pImage_data); - - return true; - } - - bool load_png(const uint8_t *pBuf, size_t buf_size, image &img, const char *pFilename) - { - interval_timer tm; - tm.start(); - - if (!buf_size) - return false; - - uint32_t width = 0, height = 0, num_chans = 0; - void* pImage = pv_png::load_png(pBuf, buf_size, 4, width, height, num_chans); - if (!pBuf) - { - error_printf("pv_png::load_png failed while loading image \"%s\"\n", pFilename); - return false; - } - - img.grant_ownership(reinterpret_cast(pImage), width, height); - - //debug_printf("Total load_png() time: %3.3f secs\n", tm.get_elapsed_secs()); - - return true; - } - - bool load_png(const char* pFilename, image& img) - { - uint8_vec buffer; - if (!read_file_to_vec(pFilename, buffer)) - { - error_printf("load_png: Failed reading file \"%s\"!\n", pFilename); - return false; - } - - return load_png(buffer.data(), buffer.size(), img, pFilename); - } - - bool load_jpg(const char *pFilename, image& img) - { - int width = 0, height = 0, actual_comps = 0; - uint8_t *pImage_data = jpgd::decompress_jpeg_image_from_file(pFilename, &width, &height, &actual_comps, 4, jpgd::jpeg_decoder::cFlagLinearChromaFiltering); - if (!pImage_data) - return false; - - img.init(pImage_data, width, height, 4); - - free(pImage_data); - - return true; - } - - bool load_image(const char* pFilename, image& img) - { - std::string ext(string_get_extension(std::string(pFilename))); - - if (ext.length() == 0) - return false; - - const char *pExt = ext.c_str(); - - if (strcasecmp(pExt, "png") == 0) - return load_png(pFilename, img); - if (strcasecmp(pExt, "tga") == 0) - return load_tga(pFilename, img); - if ( (strcasecmp(pExt, "jpg") == 0) || (strcasecmp(pExt, "jfif") == 0) || (strcasecmp(pExt, "jpeg") == 0) ) - return load_jpg(pFilename, img); - - return false; - } - - bool save_png(const char* pFilename, const image &img, uint32_t image_save_flags, uint32_t grayscale_comp) - { - if (!img.get_total_pixels()) - return false; - - void* pPNG_data = nullptr; - size_t PNG_data_size = 0; - - if (image_save_flags & cImageSaveGrayscale) - { - uint8_vec g_pixels(img.get_total_pixels()); - uint8_t* pDst = &g_pixels[0]; - - for (uint32_t y = 0; y < img.get_height(); y++) - for (uint32_t x = 0; x < img.get_width(); x++) - *pDst++ = img(x, y)[grayscale_comp]; - - pPNG_data = buminiz::tdefl_write_image_to_png_file_in_memory_ex(g_pixels.data(), img.get_width(), img.get_height(), 1, &PNG_data_size, 1, false); - } - else - { - bool has_alpha = false; - - if ((image_save_flags & cImageSaveIgnoreAlpha) == 0) - has_alpha = img.has_alpha(); - - if (!has_alpha) - { - uint8_vec rgb_pixels(img.get_total_pixels() * 3); - uint8_t* pDst = &rgb_pixels[0]; - - for (uint32_t y = 0; y < img.get_height(); y++) - { - const color_rgba* pSrc = &img(0, y); - for (uint32_t x = 0; x < img.get_width(); x++) - { - pDst[0] = pSrc->r; - pDst[1] = pSrc->g; - pDst[2] = pSrc->b; - - pSrc++; - pDst += 3; - } - } - - pPNG_data = buminiz::tdefl_write_image_to_png_file_in_memory_ex(rgb_pixels.data(), img.get_width(), img.get_height(), 3, &PNG_data_size, 1, false); - } - else - { - pPNG_data = buminiz::tdefl_write_image_to_png_file_in_memory_ex(img.get_ptr(), img.get_width(), img.get_height(), 4, &PNG_data_size, 1, false); - } - } - - if (!pPNG_data) - return false; - - bool status = write_data_to_file(pFilename, pPNG_data, PNG_data_size); - if (!status) - { - error_printf("save_png: Failed writing to filename \"%s\"!\n", pFilename); - } - - free(pPNG_data); - - return status; - } - - bool read_file_to_vec(const char* pFilename, uint8_vec& data) - { - FILE* pFile = nullptr; -#ifdef _WIN32 - fopen_s(&pFile, pFilename, "rb"); -#else - pFile = fopen(pFilename, "rb"); -#endif - if (!pFile) - return false; - - fseek(pFile, 0, SEEK_END); -#ifdef _WIN32 - int64_t filesize = _ftelli64(pFile); -#else - int64_t filesize = ftello(pFile); -#endif - if (filesize < 0) - { - fclose(pFile); - return false; - } - fseek(pFile, 0, SEEK_SET); - - if (sizeof(size_t) == sizeof(uint32_t)) - { - if (filesize > 0x70000000) - { - // File might be too big to load safely in one alloc - fclose(pFile); - return false; - } - } - - if (!data.try_resize((size_t)filesize)) - { - fclose(pFile); - return false; - } - - if (filesize) - { - if (fread(&data[0], 1, (size_t)filesize, pFile) != (size_t)filesize) - { - fclose(pFile); - return false; - } - } - - fclose(pFile); - return true; - } - - bool write_data_to_file(const char* pFilename, const void* pData, size_t len) - { - FILE* pFile = nullptr; -#ifdef _WIN32 - fopen_s(&pFile, pFilename, "wb"); -#else - pFile = fopen(pFilename, "wb"); -#endif - if (!pFile) - return false; - - if (len) - { - if (fwrite(pData, 1, len, pFile) != len) - { - fclose(pFile); - return false; - } - } - - return fclose(pFile) != EOF; - } - - float linear_to_srgb(float l) - { - assert(l >= 0.0f && l <= 1.0f); - if (l < .0031308f) - return saturate(l * 12.92f); - else - return saturate(1.055f * powf(l, 1.0f/2.4f) - .055f); - } - - float srgb_to_linear(float s) - { - assert(s >= 0.0f && s <= 1.0f); - if (s < .04045f) - return saturate(s * (1.0f/12.92f)); - else - return saturate(powf((s + .055f) * (1.0f/1.055f), 2.4f)); - } - - bool image_resample(const image &src, image &dst, bool srgb, - const char *pFilter, float filter_scale, - bool wrapping, - uint32_t first_comp, uint32_t num_comps) - { - assert((first_comp + num_comps) <= 4); - - const int cMaxComps = 4; - - const uint32_t src_w = src.get_width(), src_h = src.get_height(); - const uint32_t dst_w = dst.get_width(), dst_h = dst.get_height(); - - if (maximum(src_w, src_h) > BASISU_RESAMPLER_MAX_DIMENSION) - { - printf("Image is too large!\n"); - return false; - } - - if (!src_w || !src_h || !dst_w || !dst_h) - return false; - - if ((num_comps < 1) || (num_comps > cMaxComps)) - return false; - - if ((minimum(dst_w, dst_h) < 1) || (maximum(dst_w, dst_h) > BASISU_RESAMPLER_MAX_DIMENSION)) - { - printf("Image is too large!\n"); - return false; - } - - if ((src_w == dst_w) && (src_h == dst_h)) - { - dst = src; - return true; - } - - float srgb_to_linear_table[256]; - if (srgb) - { - for (int i = 0; i < 256; ++i) - srgb_to_linear_table[i] = srgb_to_linear((float)i * (1.0f/255.0f)); - } - - const int LINEAR_TO_SRGB_TABLE_SIZE = 8192; - uint8_t linear_to_srgb_table[LINEAR_TO_SRGB_TABLE_SIZE]; - - if (srgb) - { - for (int i = 0; i < LINEAR_TO_SRGB_TABLE_SIZE; ++i) - linear_to_srgb_table[i] = (uint8_t)clamp((int)(255.0f * linear_to_srgb((float)i * (1.0f / (LINEAR_TO_SRGB_TABLE_SIZE - 1))) + .5f), 0, 255); - } - - std::vector samples[cMaxComps]; - Resampler *resamplers[cMaxComps]; - - resamplers[0] = new Resampler(src_w, src_h, dst_w, dst_h, - wrapping ? Resampler::BOUNDARY_WRAP : Resampler::BOUNDARY_CLAMP, 0.0f, 1.0f, - pFilter, nullptr, nullptr, filter_scale, filter_scale, 0, 0); - samples[0].resize(src_w); - - for (uint32_t i = 1; i < num_comps; ++i) - { - resamplers[i] = new Resampler(src_w, src_h, dst_w, dst_h, - wrapping ? Resampler::BOUNDARY_WRAP : Resampler::BOUNDARY_CLAMP, 0.0f, 1.0f, - pFilter, resamplers[0]->get_clist_x(), resamplers[0]->get_clist_y(), filter_scale, filter_scale, 0, 0); - samples[i].resize(src_w); - } - - uint32_t dst_y = 0; - - for (uint32_t src_y = 0; src_y < src_h; ++src_y) - { - const color_rgba *pSrc = &src(0, src_y); - - // Put source lines into resampler(s) - for (uint32_t x = 0; x < src_w; ++x) - { - for (uint32_t c = 0; c < num_comps; ++c) - { - const uint32_t comp_index = first_comp + c; - const uint32_t v = (*pSrc)[comp_index]; - - if (!srgb || (comp_index == 3)) - samples[c][x] = v * (1.0f / 255.0f); - else - samples[c][x] = srgb_to_linear_table[v]; - } - - pSrc++; - } - - for (uint32_t c = 0; c < num_comps; ++c) - { - if (!resamplers[c]->put_line(&samples[c][0])) - { - for (uint32_t i = 0; i < num_comps; i++) - delete resamplers[i]; - return false; - } - } - - // Now retrieve any output lines - for (;;) - { - uint32_t c; - for (c = 0; c < num_comps; ++c) - { - const uint32_t comp_index = first_comp + c; - - const float *pOutput_samples = resamplers[c]->get_line(); - if (!pOutput_samples) - break; - - const bool linear_flag = !srgb || (comp_index == 3); - - color_rgba *pDst = &dst(0, dst_y); - - for (uint32_t x = 0; x < dst_w; x++) - { - // TODO: Add dithering - if (linear_flag) - { - int j = (int)(255.0f * pOutput_samples[x] + .5f); - (*pDst)[comp_index] = (uint8_t)clamp(j, 0, 255); - } - else - { - int j = (int)((LINEAR_TO_SRGB_TABLE_SIZE - 1) * pOutput_samples[x] + .5f); - (*pDst)[comp_index] = linear_to_srgb_table[clamp(j, 0, LINEAR_TO_SRGB_TABLE_SIZE - 1)]; - } - - pDst++; - } - } - if (c < num_comps) - break; - - ++dst_y; - } - } - - for (uint32_t i = 0; i < num_comps; ++i) - delete resamplers[i]; - - return true; - } - - void canonical_huffman_calculate_minimum_redundancy(sym_freq *A, int num_syms) - { - // See the paper "In-Place Calculation of Minimum Redundancy Codes" by Moffat and Katajainen - if (!num_syms) - return; - - if (1 == num_syms) - { - A[0].m_key = 1; - return; - } - - A[0].m_key += A[1].m_key; - - int s = 2, r = 0, next; - for (next = 1; next < (num_syms - 1); ++next) - { - if ((s >= num_syms) || (A[r].m_key < A[s].m_key)) - { - A[next].m_key = A[r].m_key; - A[r].m_key = next; - ++r; - } - else - { - A[next].m_key = A[s].m_key; - ++s; - } - - if ((s >= num_syms) || ((r < next) && A[r].m_key < A[s].m_key)) - { - A[next].m_key = A[next].m_key + A[r].m_key; - A[r].m_key = next; - ++r; - } - else - { - A[next].m_key = A[next].m_key + A[s].m_key; - ++s; - } - } - A[num_syms - 2].m_key = 0; - - for (next = num_syms - 3; next >= 0; --next) - { - A[next].m_key = 1 + A[A[next].m_key].m_key; - } - - int num_avail = 1, num_used = 0, depth = 0; - r = num_syms - 2; - next = num_syms - 1; - while (num_avail > 0) - { - for ( ; (r >= 0) && ((int)A[r].m_key == depth); ++num_used, --r ) - ; - - for ( ; num_avail > num_used; --next, --num_avail) - A[next].m_key = depth; - - num_avail = 2 * num_used; - num_used = 0; - ++depth; - } - } - - void canonical_huffman_enforce_max_code_size(int *pNum_codes, int code_list_len, int max_code_size) - { - int i; - uint32_t total = 0; - if (code_list_len <= 1) - return; - - for (i = max_code_size + 1; i <= cHuffmanMaxSupportedInternalCodeSize; i++) - pNum_codes[max_code_size] += pNum_codes[i]; - - for (i = max_code_size; i > 0; i--) - total += (((uint32_t)pNum_codes[i]) << (max_code_size - i)); - - while (total != (1UL << max_code_size)) - { - pNum_codes[max_code_size]--; - for (i = max_code_size - 1; i > 0; i--) - { - if (pNum_codes[i]) - { - pNum_codes[i]--; - pNum_codes[i + 1] += 2; - break; - } - } - - total--; - } - } - - sym_freq *canonical_huffman_radix_sort_syms(uint32_t num_syms, sym_freq *pSyms0, sym_freq *pSyms1) - { - uint32_t total_passes = 2, pass_shift, pass, i, hist[256 * 2]; - sym_freq *pCur_syms = pSyms0, *pNew_syms = pSyms1; - - clear_obj(hist); - - for (i = 0; i < num_syms; i++) - { - uint32_t freq = pSyms0[i].m_key; - - // We scale all input frequencies to 16-bits. - assert(freq <= UINT16_MAX); - - hist[freq & 0xFF]++; - hist[256 + ((freq >> 8) & 0xFF)]++; - } - - while ((total_passes > 1) && (num_syms == hist[(total_passes - 1) * 256])) - total_passes--; - - for (pass_shift = 0, pass = 0; pass < total_passes; pass++, pass_shift += 8) - { - const uint32_t *pHist = &hist[pass << 8]; - uint32_t offsets[256], cur_ofs = 0; - for (i = 0; i < 256; i++) - { - offsets[i] = cur_ofs; - cur_ofs += pHist[i]; - } - - for (i = 0; i < num_syms; i++) - pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & 0xFF]++] = pCur_syms[i]; - - sym_freq *t = pCur_syms; - pCur_syms = pNew_syms; - pNew_syms = t; - } - - return pCur_syms; - } - - bool huffman_encoding_table::init(uint32_t num_syms, const uint16_t *pFreq, uint32_t max_code_size) - { - if (max_code_size > cHuffmanMaxSupportedCodeSize) - return false; - if ((!num_syms) || (num_syms > cHuffmanMaxSyms)) - return false; - - uint32_t total_used_syms = 0; - for (uint32_t i = 0; i < num_syms; i++) - if (pFreq[i]) - total_used_syms++; - - if (!total_used_syms) - return false; - - std::vector sym_freq0(total_used_syms), sym_freq1(total_used_syms); - for (uint32_t i = 0, j = 0; i < num_syms; i++) - { - if (pFreq[i]) - { - sym_freq0[j].m_key = pFreq[i]; - sym_freq0[j++].m_sym_index = static_cast(i); - } - } - - sym_freq *pSym_freq = canonical_huffman_radix_sort_syms(total_used_syms, &sym_freq0[0], &sym_freq1[0]); - - canonical_huffman_calculate_minimum_redundancy(pSym_freq, total_used_syms); - - int num_codes[cHuffmanMaxSupportedInternalCodeSize + 1]; - clear_obj(num_codes); - - for (uint32_t i = 0; i < total_used_syms; i++) - { - if (pSym_freq[i].m_key > cHuffmanMaxSupportedInternalCodeSize) - return false; - - num_codes[pSym_freq[i].m_key]++; - } - - canonical_huffman_enforce_max_code_size(num_codes, total_used_syms, max_code_size); - - m_code_sizes.resize(0); - m_code_sizes.resize(num_syms); - - m_codes.resize(0); - m_codes.resize(num_syms); - - for (uint32_t i = 1, j = total_used_syms; i <= max_code_size; i++) - for (uint32_t l = num_codes[i]; l > 0; l--) - m_code_sizes[pSym_freq[--j].m_sym_index] = static_cast(i); - - uint32_t next_code[cHuffmanMaxSupportedInternalCodeSize + 1]; - - next_code[1] = 0; - for (uint32_t j = 0, i = 2; i <= max_code_size; i++) - next_code[i] = j = ((j + num_codes[i - 1]) << 1); - - for (uint32_t i = 0; i < num_syms; i++) - { - uint32_t rev_code = 0, code, code_size; - if ((code_size = m_code_sizes[i]) == 0) - continue; - if (code_size > cHuffmanMaxSupportedInternalCodeSize) - return false; - code = next_code[code_size]++; - for (uint32_t l = code_size; l > 0; l--, code >>= 1) - rev_code = (rev_code << 1) | (code & 1); - m_codes[i] = static_cast(rev_code); - } - - return true; - } - - bool huffman_encoding_table::init(uint32_t num_syms, const uint32_t *pSym_freq, uint32_t max_code_size) - { - if ((!num_syms) || (num_syms > cHuffmanMaxSyms)) - return false; - - uint16_vec sym_freq(num_syms); - - uint32_t max_freq = 0; - for (uint32_t i = 0; i < num_syms; i++) - max_freq = maximum(max_freq, pSym_freq[i]); - - if (max_freq < UINT16_MAX) - { - for (uint32_t i = 0; i < num_syms; i++) - sym_freq[i] = static_cast(pSym_freq[i]); - } - else - { - for (uint32_t i = 0; i < num_syms; i++) - { - if (pSym_freq[i]) - { - uint32_t f = static_cast((static_cast(pSym_freq[i]) * 65534U + (max_freq >> 1)) / max_freq); - sym_freq[i] = static_cast(clamp(f, 1, 65534)); - } - } - } - - return init(num_syms, &sym_freq[0], max_code_size); - } - - void bitwise_coder::end_nonzero_run(uint16_vec &syms, uint32_t &run_size, uint32_t len) - { - if (run_size) - { - if (run_size < cHuffmanSmallRepeatSizeMin) - { - while (run_size--) - syms.push_back(static_cast(len)); - } - else if (run_size <= cHuffmanSmallRepeatSizeMax) - { - syms.push_back(static_cast(cHuffmanSmallRepeatCode | ((run_size - cHuffmanSmallRepeatSizeMin) << 6))); - } - else - { - assert((run_size >= cHuffmanBigRepeatSizeMin) && (run_size <= cHuffmanBigRepeatSizeMax)); - syms.push_back(static_cast(cHuffmanBigRepeatCode | ((run_size - cHuffmanBigRepeatSizeMin) << 6))); - } - } - - run_size = 0; - } - - void bitwise_coder::end_zero_run(uint16_vec &syms, uint32_t &run_size) - { - if (run_size) - { - if (run_size < cHuffmanSmallZeroRunSizeMin) - { - while (run_size--) - syms.push_back(0); - } - else if (run_size <= cHuffmanSmallZeroRunSizeMax) - { - syms.push_back(static_cast(cHuffmanSmallZeroRunCode | ((run_size - cHuffmanSmallZeroRunSizeMin) << 6))); - } - else - { - assert((run_size >= cHuffmanBigZeroRunSizeMin) && (run_size <= cHuffmanBigZeroRunSizeMax)); - syms.push_back(static_cast(cHuffmanBigZeroRunCode | ((run_size - cHuffmanBigZeroRunSizeMin) << 6))); - } - } - - run_size = 0; - } - - uint32_t bitwise_coder::emit_huffman_table(const huffman_encoding_table &tab) - { - const uint64_t start_bits = m_total_bits; - - const uint8_vec &code_sizes = tab.get_code_sizes(); - - uint32_t total_used = tab.get_total_used_codes(); - put_bits(total_used, cHuffmanMaxSymsLog2); - - if (!total_used) - return 0; - - uint16_vec syms; - syms.reserve(total_used + 16); - - uint32_t prev_code_len = UINT_MAX, zero_run_size = 0, nonzero_run_size = 0; - - for (uint32_t i = 0; i <= total_used; ++i) - { - const uint32_t code_len = (i == total_used) ? 0xFF : code_sizes[i]; - assert((code_len == 0xFF) || (code_len <= 16)); - - if (code_len) - { - end_zero_run(syms, zero_run_size); - - if (code_len != prev_code_len) - { - end_nonzero_run(syms, nonzero_run_size, prev_code_len); - if (code_len != 0xFF) - syms.push_back(static_cast(code_len)); - } - else if (++nonzero_run_size == cHuffmanBigRepeatSizeMax) - end_nonzero_run(syms, nonzero_run_size, prev_code_len); - } - else - { - end_nonzero_run(syms, nonzero_run_size, prev_code_len); - - if (++zero_run_size == cHuffmanBigZeroRunSizeMax) - end_zero_run(syms, zero_run_size); - } - - prev_code_len = code_len; - } - - histogram h(cHuffmanTotalCodelengthCodes); - for (uint32_t i = 0; i < syms.size(); i++) - h.inc(syms[i] & 63); - - huffman_encoding_table ct; - if (!ct.init(h, 7)) - return 0; - - assert(cHuffmanTotalSortedCodelengthCodes == cHuffmanTotalCodelengthCodes); - - uint32_t total_codelength_codes; - for (total_codelength_codes = cHuffmanTotalSortedCodelengthCodes; total_codelength_codes > 0; total_codelength_codes--) - if (ct.get_code_sizes()[g_huffman_sorted_codelength_codes[total_codelength_codes - 1]]) - break; - - assert(total_codelength_codes); - - put_bits(total_codelength_codes, 5); - for (uint32_t i = 0; i < total_codelength_codes; i++) - put_bits(ct.get_code_sizes()[g_huffman_sorted_codelength_codes[i]], 3); - - for (uint32_t i = 0; i < syms.size(); ++i) - { - const uint32_t l = syms[i] & 63, e = syms[i] >> 6; - - put_code(l, ct); - - if (l == cHuffmanSmallZeroRunCode) - put_bits(e, cHuffmanSmallZeroRunExtraBits); - else if (l == cHuffmanBigZeroRunCode) - put_bits(e, cHuffmanBigZeroRunExtraBits); - else if (l == cHuffmanSmallRepeatCode) - put_bits(e, cHuffmanSmallRepeatExtraBits); - else if (l == cHuffmanBigRepeatCode) - put_bits(e, cHuffmanBigRepeatExtraBits); - } - - return (uint32_t)(m_total_bits - start_bits); - } - - bool huffman_test(int rand_seed) - { - histogram h(19); - - // Feed in a fibonacci sequence to force large codesizes - h[0] += 1; h[1] += 1; h[2] += 2; h[3] += 3; - h[4] += 5; h[5] += 8; h[6] += 13; h[7] += 21; - h[8] += 34; h[9] += 55; h[10] += 89; h[11] += 144; - h[12] += 233; h[13] += 377; h[14] += 610; h[15] += 987; - h[16] += 1597; h[17] += 2584; h[18] += 4181; - - huffman_encoding_table etab; - etab.init(h, 16); - - { - bitwise_coder c; - c.init(1024); - - c.emit_huffman_table(etab); - for (int i = 0; i < 19; i++) - c.put_code(i, etab); - - c.flush(); - - basist::bitwise_decoder d; - d.init(&c.get_bytes()[0], static_cast(c.get_bytes().size())); - - basist::huffman_decoding_table dtab; - bool success = d.read_huffman_table(dtab); - if (!success) - { - assert(0); - printf("Failure 5\n"); - return false; - } - - for (uint32_t i = 0; i < 19; i++) - { - uint32_t s = d.decode_huffman(dtab); - if (s != i) - { - assert(0); - printf("Failure 5\n"); - return false; - } - } - } - - basisu::rand r; - r.seed(rand_seed); - - for (int iter = 0; iter < 500000; iter++) - { - printf("%u\n", iter); - - uint32_t max_sym = r.irand(0, 8193); - uint32_t num_codes = r.irand(1, 10000); - uint_vec syms(num_codes); - - for (uint32_t i = 0; i < num_codes; i++) - { - if (r.bit()) - syms[i] = r.irand(0, max_sym); - else - { - int s = (int)(r.gaussian((float)max_sym / 2, (float)maximum(1, max_sym / 2)) + .5f); - s = basisu::clamp(s, 0, max_sym); - - syms[i] = s; - } - - } - - histogram h1(max_sym + 1); - for (uint32_t i = 0; i < num_codes; i++) - h1[syms[i]]++; - - huffman_encoding_table etab2; - if (!etab2.init(h1, 16)) - { - assert(0); - printf("Failed 0\n"); - return false; - } - - bitwise_coder c; - c.init(1024); - - c.emit_huffman_table(etab2); - - for (uint32_t i = 0; i < num_codes; i++) - c.put_code(syms[i], etab2); - - c.flush(); - - basist::bitwise_decoder d; - d.init(&c.get_bytes()[0], (uint32_t)c.get_bytes().size()); - - basist::huffman_decoding_table dtab; - bool success = d.read_huffman_table(dtab); - if (!success) - { - assert(0); - printf("Failed 2\n"); - return false; - } - - for (uint32_t i = 0; i < num_codes; i++) - { - uint32_t s = d.decode_huffman(dtab); - if (s != syms[i]) - { - assert(0); - printf("Failed 4\n"); - return false; - } - } - - } - return true; - } - - void palette_index_reorderer::init(uint32_t num_indices, const uint32_t *pIndices, uint32_t num_syms, pEntry_dist_func pDist_func, void *pCtx, float dist_func_weight) - { - assert((num_syms > 0) && (num_indices > 0)); - assert((dist_func_weight >= 0.0f) && (dist_func_weight <= 1.0f)); - - clear(); - - m_remap_table.resize(num_syms); - m_entries_picked.reserve(num_syms); - m_total_count_to_picked.resize(num_syms); - - if (num_indices <= 1) - return; - - prepare_hist(num_syms, num_indices, pIndices); - find_initial(num_syms); - - while (m_entries_to_do.size()) - { - // Find the best entry to move into the picked list. - uint32_t best_entry; - double best_count; - find_next_entry(best_entry, best_count, pDist_func, pCtx, dist_func_weight); - - // We now have chosen an entry to place in the picked list, now determine which side it goes on. - const uint32_t entry_to_move = m_entries_to_do[best_entry]; - - float side = pick_side(num_syms, entry_to_move, pDist_func, pCtx, dist_func_weight); - - // Put entry_to_move either on the "left" or "right" side of the picked entries - if (side <= 0) - m_entries_picked.push_back(entry_to_move); - else - m_entries_picked.insert(m_entries_picked.begin(), entry_to_move); - - // Erase best_entry from the todo list - m_entries_to_do.erase(m_entries_to_do.begin() + best_entry); - - // We've just moved best_entry to the picked list, so now we need to update m_total_count_to_picked[] to factor the additional count to best_entry - for (uint32_t i = 0; i < m_entries_to_do.size(); i++) - m_total_count_to_picked[m_entries_to_do[i]] += get_hist(m_entries_to_do[i], entry_to_move, num_syms); - } - - for (uint32_t i = 0; i < num_syms; i++) - m_remap_table[m_entries_picked[i]] = i; - } - - void palette_index_reorderer::prepare_hist(uint32_t num_syms, uint32_t num_indices, const uint32_t *pIndices) - { - m_hist.resize(0); - m_hist.resize(num_syms * num_syms); - - for (uint32_t i = 0; i < num_indices; i++) - { - const uint32_t idx = pIndices[i]; - inc_hist(idx, (i < (num_indices - 1)) ? pIndices[i + 1] : -1, num_syms); - inc_hist(idx, (i > 0) ? pIndices[i - 1] : -1, num_syms); - } - } - - void palette_index_reorderer::find_initial(uint32_t num_syms) - { - uint32_t max_count = 0, max_index = 0; - for (uint32_t i = 0; i < num_syms * num_syms; i++) - if (m_hist[i] > max_count) - max_count = m_hist[i], max_index = i; - - uint32_t a = max_index / num_syms, b = max_index % num_syms; - - const uint32_t ofs = m_entries_picked.size(); - - m_entries_picked.push_back(a); - m_entries_picked.push_back(b); - - for (uint32_t i = 0; i < num_syms; i++) - if ((i != m_entries_picked[ofs + 1]) && (i != m_entries_picked[ofs])) - m_entries_to_do.push_back(i); - - for (uint32_t i = 0; i < m_entries_to_do.size(); i++) - for (uint32_t j = 0; j < m_entries_picked.size(); j++) - m_total_count_to_picked[m_entries_to_do[i]] += get_hist(m_entries_to_do[i], m_entries_picked[j], num_syms); - } - - void palette_index_reorderer::find_next_entry(uint32_t &best_entry, double &best_count, pEntry_dist_func pDist_func, void *pCtx, float dist_func_weight) - { - best_entry = 0; - best_count = 0; - - for (uint32_t i = 0; i < m_entries_to_do.size(); i++) - { - const uint32_t u = m_entries_to_do[i]; - double total_count = m_total_count_to_picked[u]; - - if (pDist_func) - { - float w = maximum((*pDist_func)(u, m_entries_picked.front(), pCtx), (*pDist_func)(u, m_entries_picked.back(), pCtx)); - assert((w >= 0.0f) && (w <= 1.0f)); - total_count = (total_count + 1.0f) * lerp(1.0f - dist_func_weight, 1.0f + dist_func_weight, w); - } - - if (total_count <= best_count) - continue; - - best_entry = i; - best_count = total_count; - } - } - - float palette_index_reorderer::pick_side(uint32_t num_syms, uint32_t entry_to_move, pEntry_dist_func pDist_func, void *pCtx, float dist_func_weight) - { - float which_side = 0; - - int l_count = 0, r_count = 0; - for (uint32_t j = 0; j < m_entries_picked.size(); j++) - { - const int count = get_hist(entry_to_move, m_entries_picked[j], num_syms), r = ((int)m_entries_picked.size() + 1 - 2 * (j + 1)); - which_side += static_cast(r * count); - if (r >= 0) - l_count += r * count; - else - r_count += -r * count; - } - - if (pDist_func) - { - float w_left = lerp(1.0f - dist_func_weight, 1.0f + dist_func_weight, (*pDist_func)(entry_to_move, m_entries_picked.front(), pCtx)); - float w_right = lerp(1.0f - dist_func_weight, 1.0f + dist_func_weight, (*pDist_func)(entry_to_move, m_entries_picked.back(), pCtx)); - which_side = w_left * l_count - w_right * r_count; - } - return which_side; - } - - void image_metrics::calc(const image &a, const image &b, uint32_t first_chan, uint32_t total_chans, bool avg_comp_error, bool use_601_luma) - { - assert((first_chan < 4U) && (first_chan + total_chans <= 4U)); - - const uint32_t width = basisu::minimum(a.get_width(), b.get_width()); - const uint32_t height = basisu::minimum(a.get_height(), b.get_height()); - - double hist[256]; - clear_obj(hist); - - for (uint32_t y = 0; y < height; y++) - { - for (uint32_t x = 0; x < width; x++) - { - const color_rgba &ca = a(x, y), &cb = b(x, y); - - if (total_chans) - { - for (uint32_t c = 0; c < total_chans; c++) - hist[iabs(ca[first_chan + c] - cb[first_chan + c])]++; - } - else - { - if (use_601_luma) - hist[iabs(ca.get_601_luma() - cb.get_601_luma())]++; - else - hist[iabs(ca.get_709_luma() - cb.get_709_luma())]++; - } - } - } - - m_max = 0; - double sum = 0.0f, sum2 = 0.0f; - for (uint32_t i = 0; i < 256; i++) - { - if (hist[i]) - { - m_max = basisu::maximum(m_max, (float)i); - double v = i * hist[i]; - sum += v; - sum2 += i * v; - } - } - - double total_values = (double)width * (double)height; - if (avg_comp_error) - total_values *= (double)clamp(total_chans, 1, 4); - - m_mean = (float)clamp(sum / total_values, 0.0f, 255.0); - m_mean_squared = (float)clamp(sum2 / total_values, 0.0f, 255.0f * 255.0f); - m_rms = (float)sqrt(m_mean_squared); - m_psnr = m_rms ? (float)clamp(log10(255.0 / m_rms) * 20.0f, 0.0f, 100.0f) : 100.0f; - } - - void fill_buffer_with_random_bytes(void *pBuf, size_t size, uint32_t seed) - { - rand r(seed); - - uint8_t *pDst = static_cast(pBuf); - - while (size >= sizeof(uint32_t)) - { - *(uint32_t *)pDst = r.urand32(); - pDst += sizeof(uint32_t); - size -= sizeof(uint32_t); - } - - while (size) - { - *pDst++ = r.byte(); - size--; - } - } - - uint32_t hash_hsieh(const uint8_t *pBuf, size_t len) - { - if (!pBuf || !len) - return 0; - - uint32_t h = static_cast(len); - - const uint32_t bytes_left = len & 3; - len >>= 2; - - while (len--) - { - const uint16_t *pWords = reinterpret_cast(pBuf); - - h += pWords[0]; - - const uint32_t t = (pWords[1] << 11) ^ h; - h = (h << 16) ^ t; - - pBuf += sizeof(uint32_t); - - h += h >> 11; - } - - switch (bytes_left) - { - case 1: - h += *reinterpret_cast(pBuf); - h ^= h << 10; - h += h >> 1; - break; - case 2: - h += *reinterpret_cast(pBuf); - h ^= h << 11; - h += h >> 17; - break; - case 3: - h += *reinterpret_cast(pBuf); - h ^= h << 16; - h ^= (static_cast(pBuf[sizeof(uint16_t)])) << 18; - h += h >> 11; - break; - default: - break; - } - - h ^= h << 3; - h += h >> 5; - h ^= h << 4; - h += h >> 17; - h ^= h << 25; - h += h >> 6; - - return h; - } - - job_pool::job_pool(uint32_t num_threads) : - m_num_active_jobs(0), - m_kill_flag(false) - { - assert(num_threads >= 1U); - - debug_printf("job_pool::job_pool: %u total threads\n", num_threads); - - if (num_threads > 1) - { - m_threads.resize(num_threads - 1); - - for (int i = 0; i < ((int)num_threads - 1); i++) - m_threads[i] = std::thread([this, i] { job_thread(i); }); - } - } - - job_pool::~job_pool() - { - debug_printf("job_pool::~job_pool\n"); - - // Notify all workers that they need to die right now. - m_kill_flag = true; - - m_has_work.notify_all(); - - // Wait for all workers to die. - for (uint32_t i = 0; i < m_threads.size(); i++) - m_threads[i].join(); - } - - void job_pool::add_job(const std::function& job) - { - std::unique_lock lock(m_mutex); - - m_queue.emplace_back(job); - - const size_t queue_size = m_queue.size(); - - lock.unlock(); - - if (queue_size > 1) - m_has_work.notify_one(); - } - - void job_pool::add_job(std::function&& job) - { - std::unique_lock lock(m_mutex); - - m_queue.emplace_back(std::move(job)); - - const size_t queue_size = m_queue.size(); - - lock.unlock(); - - if (queue_size > 1) - { - m_has_work.notify_one(); - } - } - - void job_pool::wait_for_all() - { - std::unique_lock lock(m_mutex); - - // Drain the job queue on the calling thread. - while (!m_queue.empty()) - { - std::function job(m_queue.back()); - m_queue.pop_back(); - - lock.unlock(); - - job(); - - lock.lock(); - } - - // The queue is empty, now wait for all active jobs to finish up. - m_no_more_jobs.wait(lock, [this]{ return !m_num_active_jobs; } ); - } - - void job_pool::job_thread(uint32_t index) - { - BASISU_NOTE_UNUSED(index); - //debug_printf("job_pool::job_thread: starting %u\n", index); - - while (true) - { - std::unique_lock lock(m_mutex); - - // Wait for any jobs to be issued. - m_has_work.wait(lock, [this] { return m_kill_flag || m_queue.size(); } ); - - // Check to see if we're supposed to exit. - if (m_kill_flag) - break; - - // Get the job and execute it. - std::function job(m_queue.back()); - m_queue.pop_back(); - - ++m_num_active_jobs; - - lock.unlock(); - - job(); - - lock.lock(); - - --m_num_active_jobs; - - // Now check if there are no more jobs remaining. - const bool all_done = m_queue.empty() && !m_num_active_jobs; - - lock.unlock(); - - if (all_done) - m_no_more_jobs.notify_all(); - } - - //debug_printf("job_pool::job_thread: exiting\n"); - } - - // .TGA image loading - #pragma pack(push) - #pragma pack(1) - struct tga_header - { - uint8_t m_id_len; - uint8_t m_cmap; - uint8_t m_type; - packed_uint<2> m_cmap_first; - packed_uint<2> m_cmap_len; - uint8_t m_cmap_bpp; - packed_uint<2> m_x_org; - packed_uint<2> m_y_org; - packed_uint<2> m_width; - packed_uint<2> m_height; - uint8_t m_depth; - uint8_t m_desc; - }; - #pragma pack(pop) - - const uint32_t MAX_TGA_IMAGE_SIZE = 16384; - - enum tga_image_type - { - cITPalettized = 1, - cITRGB = 2, - cITGrayscale = 3 - }; - - uint8_t *read_tga(const uint8_t *pBuf, uint32_t buf_size, int &width, int &height, int &n_chans) - { - width = 0; - height = 0; - n_chans = 0; - - if (buf_size <= sizeof(tga_header)) - return nullptr; - - const tga_header &hdr = *reinterpret_cast(pBuf); - - if ((!hdr.m_width) || (!hdr.m_height) || (hdr.m_width > MAX_TGA_IMAGE_SIZE) || (hdr.m_height > MAX_TGA_IMAGE_SIZE)) - return nullptr; - - if (hdr.m_desc >> 6) - return nullptr; - - // Simple validation - if ((hdr.m_cmap != 0) && (hdr.m_cmap != 1)) - return nullptr; - - if (hdr.m_cmap) - { - if ((hdr.m_cmap_bpp == 0) || (hdr.m_cmap_bpp > 32)) - return nullptr; - - // Nobody implements CMapFirst correctly, so we're not supporting it. Never seen it used, either. - if (hdr.m_cmap_first != 0) - return nullptr; - } - - const bool x_flipped = (hdr.m_desc & 0x10) != 0; - const bool y_flipped = (hdr.m_desc & 0x20) == 0; - - bool rle_flag = false; - int file_image_type = hdr.m_type; - if (file_image_type > 8) - { - file_image_type -= 8; - rle_flag = true; - } - - const tga_image_type image_type = static_cast(file_image_type); - - switch (file_image_type) - { - case cITRGB: - if (hdr.m_depth == 8) - return nullptr; - break; - case cITPalettized: - if ((hdr.m_depth != 8) || (hdr.m_cmap != 1) || (hdr.m_cmap_len == 0)) - return nullptr; - break; - case cITGrayscale: - if ((hdr.m_cmap != 0) || (hdr.m_cmap_len != 0)) - return nullptr; - if ((hdr.m_depth != 8) && (hdr.m_depth != 16)) - return nullptr; - break; - default: - return nullptr; - } - - uint32_t tga_bytes_per_pixel = 0; - - switch (hdr.m_depth) - { - case 32: - tga_bytes_per_pixel = 4; - n_chans = 4; - break; - case 24: - tga_bytes_per_pixel = 3; - n_chans = 3; - break; - case 16: - case 15: - tga_bytes_per_pixel = 2; - // For compatibility with stb_image_write.h - n_chans = ((file_image_type == cITGrayscale) && (hdr.m_depth == 16)) ? 4 : 3; - break; - case 8: - tga_bytes_per_pixel = 1; - // For palettized RGBA support, which both FreeImage and stb_image support. - n_chans = ((file_image_type == cITPalettized) && (hdr.m_cmap_bpp == 32)) ? 4 : 3; - break; - default: - return nullptr; - } - - //const uint32_t bytes_per_line = hdr.m_width * tga_bytes_per_pixel; - - const uint8_t *pSrc = pBuf + sizeof(tga_header); - uint32_t bytes_remaining = buf_size - sizeof(tga_header); - - if (hdr.m_id_len) - { - if (bytes_remaining < hdr.m_id_len) - return nullptr; - pSrc += hdr.m_id_len; - bytes_remaining += hdr.m_id_len; - } - - color_rgba pal[256]; - for (uint32_t i = 0; i < 256; i++) - pal[i].set(0, 0, 0, 255); - - if ((hdr.m_cmap) && (hdr.m_cmap_len)) - { - if (image_type == cITPalettized) - { - // Note I cannot find any files using 32bpp palettes in the wild (never seen any in ~30 years). - if ( ((hdr.m_cmap_bpp != 32) && (hdr.m_cmap_bpp != 24) && (hdr.m_cmap_bpp != 15) && (hdr.m_cmap_bpp != 16)) || (hdr.m_cmap_len > 256) ) - return nullptr; - - if (hdr.m_cmap_bpp == 32) - { - const uint32_t pal_size = hdr.m_cmap_len * 4; - if (bytes_remaining < pal_size) - return nullptr; - - for (uint32_t i = 0; i < hdr.m_cmap_len; i++) - { - pal[i].r = pSrc[i * 4 + 2]; - pal[i].g = pSrc[i * 4 + 1]; - pal[i].b = pSrc[i * 4 + 0]; - pal[i].a = pSrc[i * 4 + 3]; - } - - bytes_remaining -= pal_size; - pSrc += pal_size; - } - else if (hdr.m_cmap_bpp == 24) - { - const uint32_t pal_size = hdr.m_cmap_len * 3; - if (bytes_remaining < pal_size) - return nullptr; - - for (uint32_t i = 0; i < hdr.m_cmap_len; i++) - { - pal[i].r = pSrc[i * 3 + 2]; - pal[i].g = pSrc[i * 3 + 1]; - pal[i].b = pSrc[i * 3 + 0]; - pal[i].a = 255; - } - - bytes_remaining -= pal_size; - pSrc += pal_size; - } - else - { - const uint32_t pal_size = hdr.m_cmap_len * 2; - if (bytes_remaining < pal_size) - return nullptr; - - for (uint32_t i = 0; i < hdr.m_cmap_len; i++) - { - const uint32_t v = pSrc[i * 2 + 0] | (pSrc[i * 2 + 1] << 8); - - pal[i].r = (((v >> 10) & 31) * 255 + 15) / 31; - pal[i].g = (((v >> 5) & 31) * 255 + 15) / 31; - pal[i].b = ((v & 31) * 255 + 15) / 31; - pal[i].a = 255; - } - - bytes_remaining -= pal_size; - pSrc += pal_size; - } - } - else - { - const uint32_t bytes_to_skip = (hdr.m_cmap_bpp >> 3) * hdr.m_cmap_len; - if (bytes_remaining < bytes_to_skip) - return nullptr; - pSrc += bytes_to_skip; - bytes_remaining += bytes_to_skip; - } - } - - width = hdr.m_width; - height = hdr.m_height; - - const uint32_t source_pitch = width * tga_bytes_per_pixel; - const uint32_t dest_pitch = width * n_chans; - - uint8_t *pImage = (uint8_t *)malloc(dest_pitch * height); - if (!pImage) - return nullptr; - - std::vector input_line_buf; - if (rle_flag) - input_line_buf.resize(source_pitch); - - int run_type = 0, run_remaining = 0; - uint8_t run_pixel[4]; - memset(run_pixel, 0, sizeof(run_pixel)); - - for (int y = 0; y < height; y++) - { - const uint8_t *pLine_data; - - if (rle_flag) - { - int pixels_remaining = width; - uint8_t *pDst = &input_line_buf[0]; - - do - { - if (!run_remaining) - { - if (bytes_remaining < 1) - { - free(pImage); - return nullptr; - } - - int v = *pSrc++; - bytes_remaining--; - - run_type = v & 0x80; - run_remaining = (v & 0x7F) + 1; - - if (run_type) - { - if (bytes_remaining < tga_bytes_per_pixel) - { - free(pImage); - return nullptr; - } - - memcpy(run_pixel, pSrc, tga_bytes_per_pixel); - pSrc += tga_bytes_per_pixel; - bytes_remaining -= tga_bytes_per_pixel; - } - } - - const uint32_t n = basisu::minimum(pixels_remaining, run_remaining); - pixels_remaining -= n; - run_remaining -= n; - - if (run_type) - { - for (uint32_t i = 0; i < n; i++) - for (uint32_t j = 0; j < tga_bytes_per_pixel; j++) - *pDst++ = run_pixel[j]; - } - else - { - const uint32_t bytes_wanted = n * tga_bytes_per_pixel; - - if (bytes_remaining < bytes_wanted) - { - free(pImage); - return nullptr; - } - - memcpy(pDst, pSrc, bytes_wanted); - pDst += bytes_wanted; - - pSrc += bytes_wanted; - bytes_remaining -= bytes_wanted; - } - - } while (pixels_remaining); - - assert((pDst - &input_line_buf[0]) == width * tga_bytes_per_pixel); - - pLine_data = &input_line_buf[0]; - } - else - { - if (bytes_remaining < source_pitch) - { - free(pImage); - return nullptr; - } - - pLine_data = pSrc; - bytes_remaining -= source_pitch; - pSrc += source_pitch; - } - - // Convert to 24bpp RGB or 32bpp RGBA. - uint8_t *pDst = pImage + (y_flipped ? (height - 1 - y) : y) * dest_pitch + (x_flipped ? (width - 1) * n_chans : 0); - const int dst_stride = x_flipped ? -((int)n_chans) : n_chans; - - switch (hdr.m_depth) - { - case 32: - assert(tga_bytes_per_pixel == 4 && n_chans == 4); - for (int i = 0; i < width; i++, pLine_data += 4, pDst += dst_stride) - { - pDst[0] = pLine_data[2]; - pDst[1] = pLine_data[1]; - pDst[2] = pLine_data[0]; - pDst[3] = pLine_data[3]; - } - break; - case 24: - assert(tga_bytes_per_pixel == 3 && n_chans == 3); - for (int i = 0; i < width; i++, pLine_data += 3, pDst += dst_stride) - { - pDst[0] = pLine_data[2]; - pDst[1] = pLine_data[1]; - pDst[2] = pLine_data[0]; - } - break; - case 16: - case 15: - if (image_type == cITRGB) - { - assert(tga_bytes_per_pixel == 2 && n_chans == 3); - for (int i = 0; i < width; i++, pLine_data += 2, pDst += dst_stride) - { - const uint32_t v = pLine_data[0] | (pLine_data[1] << 8); - pDst[0] = (((v >> 10) & 31) * 255 + 15) / 31; - pDst[1] = (((v >> 5) & 31) * 255 + 15) / 31; - pDst[2] = ((v & 31) * 255 + 15) / 31; - } - } - else - { - assert(image_type == cITGrayscale && tga_bytes_per_pixel == 2 && n_chans == 4); - for (int i = 0; i < width; i++, pLine_data += 2, pDst += dst_stride) - { - pDst[0] = pLine_data[0]; - pDst[1] = pLine_data[0]; - pDst[2] = pLine_data[0]; - pDst[3] = pLine_data[1]; - } - } - break; - case 8: - assert(tga_bytes_per_pixel == 1); - if (image_type == cITPalettized) - { - if (hdr.m_cmap_bpp == 32) - { - assert(n_chans == 4); - for (int i = 0; i < width; i++, pLine_data++, pDst += dst_stride) - { - const uint32_t c = *pLine_data; - pDst[0] = pal[c].r; - pDst[1] = pal[c].g; - pDst[2] = pal[c].b; - pDst[3] = pal[c].a; - } - } - else - { - assert(n_chans == 3); - for (int i = 0; i < width; i++, pLine_data++, pDst += dst_stride) - { - const uint32_t c = *pLine_data; - pDst[0] = pal[c].r; - pDst[1] = pal[c].g; - pDst[2] = pal[c].b; - } - } - } - else - { - assert(n_chans == 3); - for (int i = 0; i < width; i++, pLine_data++, pDst += dst_stride) - { - const uint8_t c = *pLine_data; - pDst[0] = c; - pDst[1] = c; - pDst[2] = c; - } - } - break; - default: - assert(0); - break; - } - } // y - - return pImage; - } - - uint8_t *read_tga(const char *pFilename, int &width, int &height, int &n_chans) - { - width = height = n_chans = 0; - - uint8_vec filedata; - if (!read_file_to_vec(pFilename, filedata)) - return nullptr; - - if (!filedata.size() || (filedata.size() > UINT32_MAX)) - return nullptr; - - return read_tga(&filedata[0], (uint32_t)filedata.size(), width, height, n_chans); - } - - void image::debug_text(uint32_t x_ofs, uint32_t y_ofs, uint32_t scale_x, uint32_t scale_y, const color_rgba& fg, const color_rgba* pBG, bool alpha_only, const char* pFmt, ...) - { - char buf[2048]; - - va_list args; - va_start(args, pFmt); -#ifdef _WIN32 - vsprintf_s(buf, sizeof(buf), pFmt, args); -#else - vsnprintf(buf, sizeof(buf), pFmt, args); -#endif - va_end(args); - - const char* p = buf; - - const uint32_t orig_x_ofs = x_ofs; - - while (*p) - { - uint8_t c = *p++; - if ((c < 32) || (c > 127)) - c = '.'; - - const uint8_t* pGlpyh = &g_debug_font8x8_basic[c - 32][0]; - - for (uint32_t y = 0; y < 8; y++) - { - uint32_t row_bits = pGlpyh[y]; - for (uint32_t x = 0; x < 8; x++) - { - const uint32_t q = row_bits & (1 << x); - - const color_rgba* pColor = q ? &fg : pBG; - if (!pColor) - continue; - - if (alpha_only) - fill_box_alpha(x_ofs + x * scale_x, y_ofs + y * scale_y, scale_x, scale_y, *pColor); - else - fill_box(x_ofs + x * scale_x, y_ofs + y * scale_y, scale_x, scale_y, *pColor); - } - } - - x_ofs += 8 * scale_x; - if ((x_ofs + 8 * scale_x) > m_width) - { - x_ofs = orig_x_ofs; - y_ofs += 8 * scale_y; - } - } - } - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_enc.h b/WickedEngine/Utility/basis_universal/encoder/basisu_enc.h deleted file mode 100644 index 0efeaa461..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_enc.h +++ /dev/null @@ -1,3456 +0,0 @@ -// basisu_enc.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "../transcoder/basisu.h" -#include "../transcoder/basisu_transcoder_internal.h" - -#include -#include -#include -#include -#include -#include -#include - -#if !defined(_WIN32) || defined(__MINGW32__) -#include -#endif - -// This module is really just a huge grab bag of classes and helper functions needed by the encoder. - -// If BASISU_USE_HIGH_PRECISION_COLOR_DISTANCE is 1, quality in perceptual mode will be slightly greater, but at a large increase in encoding CPU time. -#define BASISU_USE_HIGH_PRECISION_COLOR_DISTANCE (0) - -#if BASISU_SUPPORT_SSE -// Declared in basisu_kernels_imp.h, but we can't include that here otherwise it would lead to circular type errors. -extern void update_covar_matrix_16x16_sse41(uint32_t num_vecs, const void* pWeighted_vecs, const void* pOrigin, const uint32_t *pVec_indices, void* pMatrix16x16); -#endif - -namespace basisu -{ - extern uint8_t g_hamming_dist[256]; - extern const uint8_t g_debug_font8x8_basic[127 - 32 + 1][8]; - - // true if basisu_encoder_init() has been called and returned. - extern bool g_library_initialized; - - // Encoder library initialization. - // This function MUST be called before encoding anything! - void basisu_encoder_init(bool use_opencl = false, bool opencl_force_serialization = false); - void basisu_encoder_deinit(); - - // basisu_kernels_sse.cpp - will be a no-op and g_cpu_supports_sse41 will always be false unless compiled with BASISU_SUPPORT_SSE=1 - extern void detect_sse41(); - -#if BASISU_SUPPORT_SSE - extern bool g_cpu_supports_sse41; -#else - const bool g_cpu_supports_sse41 = false; -#endif - - void error_vprintf(const char* pFmt, va_list args); - void error_printf(const char *pFmt, ...); - - // Helpers - - inline uint8_t clamp255(int32_t i) - { - return (uint8_t)((i & 0xFFFFFF00U) ? (~(i >> 31)) : i); - } - - inline int32_t clampi(int32_t value, int32_t low, int32_t high) - { - if (value < low) - value = low; - else if (value > high) - value = high; - return value; - } - - inline uint8_t mul_8(uint32_t v, uint32_t a) - { - v = v * a + 128; - return (uint8_t)((v + (v >> 8)) >> 8); - } - - inline uint64_t read_bits(const uint8_t* pBuf, uint32_t& bit_offset, uint32_t codesize) - { - assert(codesize <= 64); - uint64_t bits = 0; - uint32_t total_bits = 0; - - while (total_bits < codesize) - { - uint32_t byte_bit_offset = bit_offset & 7; - uint32_t bits_to_read = minimum(codesize - total_bits, 8 - byte_bit_offset); - - uint32_t byte_bits = pBuf[bit_offset >> 3] >> byte_bit_offset; - byte_bits &= ((1 << bits_to_read) - 1); - - bits |= ((uint64_t)(byte_bits) << total_bits); - - total_bits += bits_to_read; - bit_offset += bits_to_read; - } - - return bits; - } - - inline uint32_t read_bits32(const uint8_t* pBuf, uint32_t& bit_offset, uint32_t codesize) - { - assert(codesize <= 32); - uint32_t bits = 0; - uint32_t total_bits = 0; - - while (total_bits < codesize) - { - uint32_t byte_bit_offset = bit_offset & 7; - uint32_t bits_to_read = minimum(codesize - total_bits, 8 - byte_bit_offset); - - uint32_t byte_bits = pBuf[bit_offset >> 3] >> byte_bit_offset; - byte_bits &= ((1 << bits_to_read) - 1); - - bits |= (byte_bits << total_bits); - - total_bits += bits_to_read; - bit_offset += bits_to_read; - } - - return bits; - } - - // Hashing - - inline uint32_t bitmix32c(uint32_t v) - { - v = (v + 0x7ed55d16) + (v << 12); - v = (v ^ 0xc761c23c) ^ (v >> 19); - v = (v + 0x165667b1) + (v << 5); - v = (v + 0xd3a2646c) ^ (v << 9); - v = (v + 0xfd7046c5) + (v << 3); - v = (v ^ 0xb55a4f09) ^ (v >> 16); - return v; - } - - inline uint32_t bitmix32(uint32_t v) - { - v -= (v << 6); - v ^= (v >> 17); - v -= (v << 9); - v ^= (v << 4); - v -= (v << 3); - v ^= (v << 10); - v ^= (v >> 15); - return v; - } - - inline uint32_t wang_hash(uint32_t seed) - { - seed = (seed ^ 61) ^ (seed >> 16); - seed *= 9; - seed = seed ^ (seed >> 4); - seed *= 0x27d4eb2d; - seed = seed ^ (seed >> 15); - return seed; - } - - uint32_t hash_hsieh(const uint8_t* pBuf, size_t len); - - template - struct bit_hasher - { - std::size_t operator()(const Key& k) const - { - return hash_hsieh(reinterpret_cast(&k), sizeof(k)); - } - }; - - class running_stat - { - public: - running_stat() { clear(); } - - void clear() - { - m_n = 0; - m_total = 0; - m_old_m = 0; - m_new_m = 0; - m_old_s = 0; - m_new_s = 0; - m_min = 0; - m_max = 0; - } - - void push(double x) - { - m_n++; - m_total += x; - if (m_n == 1) - { - m_old_m = m_new_m = x; - m_old_s = 0.0; - m_min = x; - m_max = x; - } - else - { - // See Knuth TAOCP vol 2, 3rd edition, page 232 - m_new_m = m_old_m + (x - m_old_m) / m_n; - m_new_s = m_old_s + (x - m_old_m) * (x - m_new_m); - m_old_m = m_new_m; - m_old_s = m_new_s; - m_min = basisu::minimum(x, m_min); - m_max = basisu::maximum(x, m_max); - } - } - - uint32_t get_num() const - { - return m_n; - } - - double get_total() const - { - return m_total; - } - - double get_mean() const - { - return (m_n > 0) ? m_new_m : 0.0; - } - - // Returns sample variance - double get_variance() const - { - return ((m_n > 1) ? m_new_s / (m_n - 1) : 0.0); - } - - double get_std_dev() const - { - return sqrt(get_variance()); - } - - double get_min() const - { - return m_min; - } - - double get_max() const - { - return m_max; - } - - private: - uint32_t m_n; - double m_total, m_old_m, m_new_m, m_old_s, m_new_s, m_min, m_max; - }; - - // Linear algebra - - template - class vec - { - protected: - T m_v[N]; - - public: - enum { num_elements = N }; - - inline vec() { } - inline vec(eZero) { set_zero(); } - - explicit inline vec(T val) { set(val); } - inline vec(T v0, T v1) { set(v0, v1); } - inline vec(T v0, T v1, T v2) { set(v0, v1, v2); } - inline vec(T v0, T v1, T v2, T v3) { set(v0, v1, v2, v3); } - inline vec(const vec &other) { for (uint32_t i = 0; i < N; i++) m_v[i] = other.m_v[i]; } - template inline vec(const vec &other) { set(other); } - - inline T operator[](uint32_t i) const { assert(i < N); return m_v[i]; } - inline T &operator[](uint32_t i) { assert(i < N); return m_v[i]; } - - inline T getX() const { return m_v[0]; } - inline T getY() const { static_assert(N >= 2, "N too small"); return m_v[1]; } - inline T getZ() const { static_assert(N >= 3, "N too small"); return m_v[2]; } - inline T getW() const { static_assert(N >= 4, "N too small"); return m_v[3]; } - - inline bool operator==(const vec &rhs) const { for (uint32_t i = 0; i < N; i++) if (m_v[i] != rhs.m_v[i]) return false; return true; } - inline bool operator<(const vec &rhs) const { for (uint32_t i = 0; i < N; i++) { if (m_v[i] < rhs.m_v[i]) return true; else if (m_v[i] != rhs.m_v[i]) return false; } return false; } - - inline void set_zero() { for (uint32_t i = 0; i < N; i++) m_v[i] = 0; } - - template - inline vec &set(const vec &other) - { - uint32_t i; - if ((const void *)(&other) == (const void *)(this)) - return *this; - const uint32_t m = minimum(OtherN, N); - for (i = 0; i < m; i++) - m_v[i] = static_cast(other[i]); - for (; i < N; i++) - m_v[i] = 0; - return *this; - } - - inline vec &set_component(uint32_t index, T val) { assert(index < N); m_v[index] = val; return *this; } - inline vec &set(T val) { for (uint32_t i = 0; i < N; i++) m_v[i] = val; return *this; } - inline void clear_elements(uint32_t s, uint32_t e) { assert(e <= N); for (uint32_t i = s; i < e; i++) m_v[i] = 0; } - - inline vec &set(T v0, T v1) - { - m_v[0] = v0; - if (N >= 2) - { - m_v[1] = v1; - clear_elements(2, N); - } - return *this; - } - - inline vec &set(T v0, T v1, T v2) - { - m_v[0] = v0; - if (N >= 2) - { - m_v[1] = v1; - if (N >= 3) - { - m_v[2] = v2; - clear_elements(3, N); - } - } - return *this; - } - - inline vec &set(T v0, T v1, T v2, T v3) - { - m_v[0] = v0; - if (N >= 2) - { - m_v[1] = v1; - if (N >= 3) - { - m_v[2] = v2; - - if (N >= 4) - { - m_v[3] = v3; - clear_elements(5, N); - } - } - } - return *this; - } - - inline vec &operator=(const vec &rhs) { if (this != &rhs) for (uint32_t i = 0; i < N; i++) m_v[i] = rhs.m_v[i]; return *this; } - template inline vec &operator=(const vec &rhs) { set(rhs); return *this; } - - inline const T *get_ptr() const { return reinterpret_cast(&m_v[0]); } - inline T *get_ptr() { return reinterpret_cast(&m_v[0]); } - - inline vec operator- () const { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = -m_v[i]; return res; } - inline vec operator+ () const { return *this; } - inline vec &operator+= (const vec &other) { for (uint32_t i = 0; i < N; i++) m_v[i] += other.m_v[i]; return *this; } - inline vec &operator-= (const vec &other) { for (uint32_t i = 0; i < N; i++) m_v[i] -= other.m_v[i]; return *this; } - inline vec &operator/= (const vec &other) { for (uint32_t i = 0; i < N; i++) m_v[i] /= other.m_v[i]; return *this; } - inline vec &operator*=(const vec &other) { for (uint32_t i = 0; i < N; i++) m_v[i] *= other.m_v[i]; return *this; } - inline vec &operator/= (T s) { for (uint32_t i = 0; i < N; i++) m_v[i] /= s; return *this; } - inline vec &operator*= (T s) { for (uint32_t i = 0; i < N; i++) m_v[i] *= s; return *this; } - - friend inline vec operator+(const vec &lhs, const vec &rhs) { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = lhs.m_v[i] + rhs.m_v[i]; return res; } - friend inline vec operator-(const vec &lhs, const vec &rhs) { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = lhs.m_v[i] - rhs.m_v[i]; return res; } - friend inline vec operator*(const vec &lhs, T val) { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = lhs.m_v[i] * val; return res; } - friend inline vec operator*(T val, const vec &rhs) { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = val * rhs.m_v[i]; return res; } - friend inline vec operator/(const vec &lhs, T val) { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = lhs.m_v[i] / val; return res; } - friend inline vec operator/(const vec &lhs, const vec &rhs) { vec res; for (uint32_t i = 0; i < N; i++) res.m_v[i] = lhs.m_v[i] / rhs.m_v[i]; return res; } - - static inline T dot_product(const vec &lhs, const vec &rhs) { T res = lhs.m_v[0] * rhs.m_v[0]; for (uint32_t i = 1; i < N; i++) res += lhs.m_v[i] * rhs.m_v[i]; return res; } - - inline T dot(const vec &rhs) const { return dot_product(*this, rhs); } - - inline T norm() const { return dot_product(*this, *this); } - inline T length() const { return sqrt(norm()); } - - inline T squared_distance(const vec &other) const { T d2 = 0; for (uint32_t i = 0; i < N; i++) { T d = m_v[i] - other.m_v[i]; d2 += d * d; } return d2; } - inline double squared_distance_d(const vec& other) const { double d2 = 0; for (uint32_t i = 0; i < N; i++) { double d = (double)m_v[i] - (double)other.m_v[i]; d2 += d * d; } return d2; } - - inline T distance(const vec &other) const { return static_cast(sqrt(squared_distance(other))); } - inline double distance_d(const vec& other) const { return sqrt(squared_distance_d(other)); } - - inline vec &normalize_in_place() { T len = length(); if (len != 0.0f) *this *= (1.0f / len); return *this; } - - inline vec &clamp(T l, T h) - { - for (uint32_t i = 0; i < N; i++) - m_v[i] = basisu::clamp(m_v[i], l, h); - return *this; - } - - static vec component_min(const vec& a, const vec& b) - { - vec res; - for (uint32_t i = 0; i < N; i++) - res[i] = minimum(a[i], b[i]); - return res; - } - - static vec component_max(const vec& a, const vec& b) - { - vec res; - for (uint32_t i = 0; i < N; i++) - res[i] = maximum(a[i], b[i]); - return res; - } - }; - - typedef vec<4, double> vec4D; - typedef vec<3, double> vec3D; - typedef vec<2, double> vec2D; - typedef vec<1, double> vec1D; - - typedef vec<4, float> vec4F; - typedef vec<3, float> vec3F; - typedef vec<2, float> vec2F; - typedef vec<1, float> vec1F; - - typedef vec<16, float> vec16F; - - template - class matrix - { - public: - typedef vec col_vec; - typedef vec row_vec; - - typedef T scalar_type; - - enum { rows = Rows, cols = Cols }; - - protected: - row_vec m_r[Rows]; - - public: - inline matrix() {} - inline matrix(eZero) { set_zero(); } - inline matrix(const matrix &other) { for (uint32_t i = 0; i < Rows; i++) m_r[i] = other.m_r[i]; } - inline matrix &operator=(const matrix &rhs) { if (this != &rhs) for (uint32_t i = 0; i < Rows; i++) m_r[i] = rhs.m_r[i]; return *this; } - - inline T operator()(uint32_t r, uint32_t c) const { assert((r < Rows) && (c < Cols)); return m_r[r][c]; } - inline T &operator()(uint32_t r, uint32_t c) { assert((r < Rows) && (c < Cols)); return m_r[r][c]; } - - inline const row_vec &operator[](uint32_t r) const { assert(r < Rows); return m_r[r]; } - inline row_vec &operator[](uint32_t r) { assert(r < Rows); return m_r[r]; } - - inline matrix &set_zero() - { - for (uint32_t i = 0; i < Rows; i++) - m_r[i].set_zero(); - return *this; - } - - inline matrix &set_identity() - { - for (uint32_t i = 0; i < Rows; i++) - { - m_r[i].set_zero(); - if (i < Cols) - m_r[i][i] = 1.0f; - } - return *this; - } - }; - - template - inline VectorType compute_pca_from_covar(matrix &cmatrix) - { - VectorType axis; - if (N == 1) - axis.set(1.0f); - else - { - for (uint32_t i = 0; i < N; i++) - axis[i] = lerp(.75f, 1.25f, i * (1.0f / maximum(N - 1, 1))); - } - - VectorType prev_axis(axis); - - // Power iterations - for (uint32_t power_iter = 0; power_iter < 8; power_iter++) - { - VectorType trial_axis; - double max_sum = 0; - - for (uint32_t i = 0; i < N; i++) - { - double sum = 0; - for (uint32_t j = 0; j < N; j++) - sum += cmatrix[i][j] * axis[j]; - - trial_axis[i] = static_cast(sum); - - max_sum = maximum(fabs(sum), max_sum); - } - - if (max_sum != 0.0f) - trial_axis *= static_cast(1.0f / max_sum); - - VectorType delta_axis(prev_axis - trial_axis); - - prev_axis = axis; - axis = trial_axis; - - if (delta_axis.norm() < .0024f) - break; - } - - return axis.normalize_in_place(); - } - - template inline void indirect_sort(uint32_t num_indices, uint32_t* pIndices, const T* pKeys) - { - for (uint32_t i = 0; i < num_indices; i++) - pIndices[i] = i; - - std::sort( - pIndices, - pIndices + num_indices, - [pKeys](uint32_t a, uint32_t b) { return pKeys[a] < pKeys[b]; } - ); - } - - // 1-4 byte direct Radix sort. - template - T* radix_sort(uint32_t num_vals, T* pBuf0, T* pBuf1, uint32_t key_ofs, uint32_t key_size) - { - assert(key_ofs < sizeof(T)); - assert((key_size >= 1) && (key_size <= 4)); - - uint32_t hist[256 * 4]; - - memset(hist, 0, sizeof(hist[0]) * 256 * key_size); - -#define BASISU_GET_KEY(p) (*(uint32_t *)((uint8_t *)(p) + key_ofs)) - - if (key_size == 4) - { - T* p = pBuf0; - T* q = pBuf0 + num_vals; - for (; p != q; p++) - { - const uint32_t key = BASISU_GET_KEY(p); - - hist[key & 0xFF]++; - hist[256 + ((key >> 8) & 0xFF)]++; - hist[512 + ((key >> 16) & 0xFF)]++; - hist[768 + ((key >> 24) & 0xFF)]++; - } - } - else if (key_size == 3) - { - T* p = pBuf0; - T* q = pBuf0 + num_vals; - for (; p != q; p++) - { - const uint32_t key = BASISU_GET_KEY(p); - - hist[key & 0xFF]++; - hist[256 + ((key >> 8) & 0xFF)]++; - hist[512 + ((key >> 16) & 0xFF)]++; - } - } - else if (key_size == 2) - { - T* p = pBuf0; - T* q = pBuf0 + (num_vals >> 1) * 2; - - for (; p != q; p += 2) - { - const uint32_t key0 = BASISU_GET_KEY(p); - const uint32_t key1 = BASISU_GET_KEY(p + 1); - - hist[key0 & 0xFF]++; - hist[256 + ((key0 >> 8) & 0xFF)]++; - - hist[key1 & 0xFF]++; - hist[256 + ((key1 >> 8) & 0xFF)]++; - } - - if (num_vals & 1) - { - const uint32_t key = BASISU_GET_KEY(p); - - hist[key & 0xFF]++; - hist[256 + ((key >> 8) & 0xFF)]++; - } - } - else - { - assert(key_size == 1); - if (key_size != 1) - return NULL; - - T* p = pBuf0; - T* q = pBuf0 + (num_vals >> 1) * 2; - - for (; p != q; p += 2) - { - const uint32_t key0 = BASISU_GET_KEY(p); - const uint32_t key1 = BASISU_GET_KEY(p + 1); - - hist[key0 & 0xFF]++; - hist[key1 & 0xFF]++; - } - - if (num_vals & 1) - { - const uint32_t key = BASISU_GET_KEY(p); - hist[key & 0xFF]++; - } - } - - T* pCur = pBuf0; - T* pNew = pBuf1; - - for (uint32_t pass = 0; pass < key_size; pass++) - { - const uint32_t* pHist = &hist[pass << 8]; - - uint32_t offsets[256]; - - uint32_t cur_ofs = 0; - for (uint32_t i = 0; i < 256; i += 2) - { - offsets[i] = cur_ofs; - cur_ofs += pHist[i]; - - offsets[i + 1] = cur_ofs; - cur_ofs += pHist[i + 1]; - } - - const uint32_t pass_shift = pass << 3; - - T* p = pCur; - T* q = pCur + (num_vals >> 1) * 2; - - for (; p != q; p += 2) - { - uint32_t c0 = (BASISU_GET_KEY(p) >> pass_shift) & 0xFF; - uint32_t c1 = (BASISU_GET_KEY(p + 1) >> pass_shift) & 0xFF; - - if (c0 == c1) - { - uint32_t dst_offset0 = offsets[c0]; - - offsets[c0] = dst_offset0 + 2; - - pNew[dst_offset0] = p[0]; - pNew[dst_offset0 + 1] = p[1]; - } - else - { - uint32_t dst_offset0 = offsets[c0]++; - uint32_t dst_offset1 = offsets[c1]++; - - pNew[dst_offset0] = p[0]; - pNew[dst_offset1] = p[1]; - } - } - - if (num_vals & 1) - { - uint32_t c = (BASISU_GET_KEY(p) >> pass_shift) & 0xFF; - - uint32_t dst_offset = offsets[c]; - offsets[c] = dst_offset + 1; - - pNew[dst_offset] = *p; - } - - T* t = pCur; - pCur = pNew; - pNew = t; - } - - return pCur; - } - -#undef BASISU_GET_KEY - - // Very simple job pool with no dependencies. - class job_pool - { - BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(job_pool); - - public: - // num_threads is the TOTAL number of job pool threads, including the calling thread! So 2=1 new thread, 3=2 new threads, etc. - job_pool(uint32_t num_threads); - ~job_pool(); - - void add_job(const std::function& job); - void add_job(std::function&& job); - - void wait_for_all(); - - size_t get_total_threads() const { return 1 + m_threads.size(); } - - private: - std::vector m_threads; - std::vector > m_queue; - - std::mutex m_mutex; - std::condition_variable m_has_work; - std::condition_variable m_no_more_jobs; - - uint32_t m_num_active_jobs; - - std::atomic m_kill_flag; - - void job_thread(uint32_t index); - }; - - // Simple 32-bit color class - - class color_rgba_i16 - { - public: - union - { - int16_t m_comps[4]; - - struct - { - int16_t r; - int16_t g; - int16_t b; - int16_t a; - }; - }; - - inline color_rgba_i16() - { - static_assert(sizeof(*this) == sizeof(int16_t)*4, "sizeof(*this) == sizeof(int16_t)*4"); - } - - inline color_rgba_i16(int sr, int sg, int sb, int sa) - { - set(sr, sg, sb, sa); - } - - inline color_rgba_i16 &set(int sr, int sg, int sb, int sa) - { - m_comps[0] = (int16_t)clamp(sr, INT16_MIN, INT16_MAX); - m_comps[1] = (int16_t)clamp(sg, INT16_MIN, INT16_MAX); - m_comps[2] = (int16_t)clamp(sb, INT16_MIN, INT16_MAX); - m_comps[3] = (int16_t)clamp(sa, INT16_MIN, INT16_MAX); - return *this; - } - }; - - class color_rgba - { - public: - union - { - uint8_t m_comps[4]; - - struct - { - uint8_t r; - uint8_t g; - uint8_t b; - uint8_t a; - }; - }; - - inline color_rgba() - { - static_assert(sizeof(*this) == 4, "sizeof(*this) != 4"); - static_assert(sizeof(*this) == sizeof(basist::color32), "sizeof(*this) != sizeof(basist::color32)"); - } - - // Not too hot about this idea. - inline color_rgba(const basist::color32& other) : - r(other.r), - g(other.g), - b(other.b), - a(other.a) - { - } - - color_rgba& operator= (const basist::color32& rhs) - { - r = rhs.r; - g = rhs.g; - b = rhs.b; - a = rhs.a; - return *this; - } - - inline color_rgba(int y) - { - set(y); - } - - inline color_rgba(int y, int na) - { - set(y, na); - } - - inline color_rgba(int sr, int sg, int sb, int sa) - { - set(sr, sg, sb, sa); - } - - inline color_rgba(eNoClamp, int sr, int sg, int sb, int sa) - { - set_noclamp_rgba((uint8_t)sr, (uint8_t)sg, (uint8_t)sb, (uint8_t)sa); - } - - inline color_rgba& set_noclamp_y(int y) - { - m_comps[0] = (uint8_t)y; - m_comps[1] = (uint8_t)y; - m_comps[2] = (uint8_t)y; - m_comps[3] = (uint8_t)255; - return *this; - } - - inline color_rgba &set_noclamp_rgba(int sr, int sg, int sb, int sa) - { - m_comps[0] = (uint8_t)sr; - m_comps[1] = (uint8_t)sg; - m_comps[2] = (uint8_t)sb; - m_comps[3] = (uint8_t)sa; - return *this; - } - - inline color_rgba &set(int y) - { - m_comps[0] = static_cast(clamp(y, 0, 255)); - m_comps[1] = m_comps[0]; - m_comps[2] = m_comps[0]; - m_comps[3] = 255; - return *this; - } - - inline color_rgba &set(int y, int na) - { - m_comps[0] = static_cast(clamp(y, 0, 255)); - m_comps[1] = m_comps[0]; - m_comps[2] = m_comps[0]; - m_comps[3] = static_cast(clamp(na, 0, 255)); - return *this; - } - - inline color_rgba &set(int sr, int sg, int sb, int sa) - { - m_comps[0] = static_cast(clamp(sr, 0, 255)); - m_comps[1] = static_cast(clamp(sg, 0, 255)); - m_comps[2] = static_cast(clamp(sb, 0, 255)); - m_comps[3] = static_cast(clamp(sa, 0, 255)); - return *this; - } - - inline color_rgba &set_rgb(int sr, int sg, int sb) - { - m_comps[0] = static_cast(clamp(sr, 0, 255)); - m_comps[1] = static_cast(clamp(sg, 0, 255)); - m_comps[2] = static_cast(clamp(sb, 0, 255)); - return *this; - } - - inline color_rgba &set_rgb(const color_rgba &other) - { - r = other.r; - g = other.g; - b = other.b; - return *this; - } - - inline const uint8_t &operator[] (uint32_t index) const { assert(index < 4); return m_comps[index]; } - inline uint8_t &operator[] (uint32_t index) { assert(index < 4); return m_comps[index]; } - - inline void clear() - { - m_comps[0] = 0; - m_comps[1] = 0; - m_comps[2] = 0; - m_comps[3] = 0; - } - - inline bool operator== (const color_rgba &rhs) const - { - if (m_comps[0] != rhs.m_comps[0]) return false; - if (m_comps[1] != rhs.m_comps[1]) return false; - if (m_comps[2] != rhs.m_comps[2]) return false; - if (m_comps[3] != rhs.m_comps[3]) return false; - return true; - } - - inline bool operator!= (const color_rgba &rhs) const - { - return !(*this == rhs); - } - - inline bool operator<(const color_rgba &rhs) const - { - for (int i = 0; i < 4; i++) - { - if (m_comps[i] < rhs.m_comps[i]) - return true; - else if (m_comps[i] != rhs.m_comps[i]) - return false; - } - return false; - } - - inline int get_601_luma() const { return (19595U * m_comps[0] + 38470U * m_comps[1] + 7471U * m_comps[2] + 32768U) >> 16U; } - inline int get_709_luma() const { return (13938U * m_comps[0] + 46869U * m_comps[1] + 4729U * m_comps[2] + 32768U) >> 16U; } - inline int get_luma(bool luma_601) const { return luma_601 ? get_601_luma() : get_709_luma(); } - - inline basist::color32 get_color32() const - { - return basist::color32(r, g, b, a); - } - - static color_rgba comp_min(const color_rgba& a, const color_rgba& b) { return color_rgba(basisu::minimum(a[0], b[0]), basisu::minimum(a[1], b[1]), basisu::minimum(a[2], b[2]), basisu::minimum(a[3], b[3])); } - static color_rgba comp_max(const color_rgba& a, const color_rgba& b) { return color_rgba(basisu::maximum(a[0], b[0]), basisu::maximum(a[1], b[1]), basisu::maximum(a[2], b[2]), basisu::maximum(a[3], b[3])); } - }; - - typedef basisu::vector color_rgba_vec; - - const color_rgba g_black_color(0, 0, 0, 255); - const color_rgba g_black_trans_color(0, 0, 0, 0); - const color_rgba g_white_color(255, 255, 255, 255); - - inline int color_distance(int r0, int g0, int b0, int r1, int g1, int b1) - { - int dr = r0 - r1, dg = g0 - g1, db = b0 - b1; - return dr * dr + dg * dg + db * db; - } - - inline int color_distance(int r0, int g0, int b0, int a0, int r1, int g1, int b1, int a1) - { - int dr = r0 - r1, dg = g0 - g1, db = b0 - b1, da = a0 - a1; - return dr * dr + dg * dg + db * db + da * da; - } - - inline int color_distance(const color_rgba &c0, const color_rgba &c1, bool alpha) - { - if (alpha) - return color_distance(c0.r, c0.g, c0.b, c0.a, c1.r, c1.g, c1.b, c1.a); - else - return color_distance(c0.r, c0.g, c0.b, c1.r, c1.g, c1.b); - } - - // TODO: Allow user to control channel weightings. - inline uint32_t color_distance(bool perceptual, const color_rgba &e1, const color_rgba &e2, bool alpha) - { - if (perceptual) - { -#if BASISU_USE_HIGH_PRECISION_COLOR_DISTANCE - const float l1 = e1.r * .2126f + e1.g * .715f + e1.b * .0722f; - const float l2 = e2.r * .2126f + e2.g * .715f + e2.b * .0722f; - - const float cr1 = e1.r - l1; - const float cr2 = e2.r - l2; - - const float cb1 = e1.b - l1; - const float cb2 = e2.b - l2; - - const float dl = l1 - l2; - const float dcr = cr1 - cr2; - const float dcb = cb1 - cb2; - - uint32_t d = static_cast(32.0f*4.0f*dl*dl + 32.0f*2.0f*(.5f / (1.0f - .2126f))*(.5f / (1.0f - .2126f))*dcr*dcr + 32.0f*.25f*(.5f / (1.0f - .0722f))*(.5f / (1.0f - .0722f))*dcb*dcb); - - if (alpha) - { - int da = static_cast(e1.a) - static_cast(e2.a); - d += static_cast(128.0f*da*da); - } - - return d; -#elif 1 - int dr = e1.r - e2.r; - int dg = e1.g - e2.g; - int db = e1.b - e2.b; - -#if 0 - int delta_l = dr * 27 + dg * 92 + db * 9; - int delta_cr = dr * 128 - delta_l; - int delta_cb = db * 128 - delta_l; - - uint32_t id = ((uint32_t)(delta_l * delta_l) >> 7U) + - ((((uint32_t)(delta_cr * delta_cr) >> 7U) * 26U) >> 7U) + - ((((uint32_t)(delta_cb * delta_cb) >> 7U) * 3U) >> 7U); -#else - int64_t delta_l = dr * 27 + dg * 92 + db * 9; - int64_t delta_cr = dr * 128 - delta_l; - int64_t delta_cb = db * 128 - delta_l; - - uint32_t id = ((uint32_t)((delta_l * delta_l) >> 7U)) + - ((((uint32_t)((delta_cr * delta_cr) >> 7U)) * 26U) >> 7U) + - ((((uint32_t)((delta_cb * delta_cb) >> 7U)) * 3U) >> 7U); -#endif - - if (alpha) - { - int da = (e1.a - e2.a) << 7; - // This shouldn't overflow if da is 255 or -255: 29.99 bits after squaring. - id += ((uint32_t)(da * da) >> 7U); - } - - return id; -#else - int dr = e1.r - e2.r; - int dg = e1.g - e2.g; - int db = e1.b - e2.b; - - int64_t delta_l = dr * 27 + dg * 92 + db * 9; - int64_t delta_cr = dr * 128 - delta_l; - int64_t delta_cb = db * 128 - delta_l; - - int64_t id = ((delta_l * delta_l) * 128) + - ((delta_cr * delta_cr) * 26) + - ((delta_cb * delta_cb) * 3); - - if (alpha) - { - int64_t da = (e1.a - e2.a); - id += (da * da) * 128; - } - - int d = (id + 8192) >> 14; - - return d; -#endif - } - else - return color_distance(e1, e2, alpha); - } - - static inline uint32_t color_distance_la(const color_rgba& a, const color_rgba& b) - { - const int dl = a.r - b.r; - const int da = a.a - b.a; - return dl * dl + da * da; - } - - // String helpers - - inline int string_find_right(const std::string& filename, char c) - { - size_t result = filename.find_last_of(c); - return (result == std::string::npos) ? -1 : (int)result; - } - - inline std::string string_get_extension(const std::string &filename) - { - int sep = -1; -#ifdef _WIN32 - sep = string_find_right(filename, '\\'); -#endif - if (sep < 0) - sep = string_find_right(filename, '/'); - - int dot = string_find_right(filename, '.'); - if (dot <= sep) - return ""; - - std::string result(filename); - result.erase(0, dot + 1); - - return result; - } - - inline bool string_remove_extension(std::string &filename) - { - int sep = -1; -#ifdef _WIN32 - sep = string_find_right(filename, '\\'); -#endif - if (sep < 0) - sep = string_find_right(filename, '/'); - - int dot = string_find_right(filename, '.'); - if ((dot < sep) || (dot < 0)) - return false; - - filename.resize(dot); - - return true; - } - - inline std::string string_format(const char* pFmt, ...) - { - char buf[2048]; - - va_list args; - va_start(args, pFmt); -#ifdef _WIN32 - vsprintf_s(buf, sizeof(buf), pFmt, args); -#else - vsnprintf(buf, sizeof(buf), pFmt, args); -#endif - va_end(args); - - return std::string(buf); - } - - inline std::string string_tolower(const std::string& s) - { - std::string result(s); - for (size_t i = 0; i < result.size(); i++) - result[i] = (char)tolower((int)result[i]); - return result; - } - - inline char *strcpy_safe(char *pDst, size_t dst_len, const char *pSrc) - { - assert(pDst && pSrc && dst_len); - if (!dst_len) - return pDst; - - const size_t src_len = strlen(pSrc); - const size_t src_len_plus_terminator = src_len + 1; - - if (src_len_plus_terminator <= dst_len) - memcpy(pDst, pSrc, src_len_plus_terminator); - else - { - if (dst_len > 1) - memcpy(pDst, pSrc, dst_len - 1); - pDst[dst_len - 1] = '\0'; - } - - return pDst; - } - - inline bool string_ends_with(const std::string& s, char c) - { - return (s.size() != 0) && (s.back() == c); - } - - inline bool string_split_path(const char *p, std::string *pDrive, std::string *pDir, std::string *pFilename, std::string *pExt) - { -#ifdef _MSC_VER - char drive_buf[_MAX_DRIVE] = { 0 }; - char dir_buf[_MAX_DIR] = { 0 }; - char fname_buf[_MAX_FNAME] = { 0 }; - char ext_buf[_MAX_EXT] = { 0 }; - - errno_t error = _splitpath_s(p, - pDrive ? drive_buf : NULL, pDrive ? _MAX_DRIVE : 0, - pDir ? dir_buf : NULL, pDir ? _MAX_DIR : 0, - pFilename ? fname_buf : NULL, pFilename ? _MAX_FNAME : 0, - pExt ? ext_buf : NULL, pExt ? _MAX_EXT : 0); - if (error != 0) - return false; - - if (pDrive) *pDrive = drive_buf; - if (pDir) *pDir = dir_buf; - if (pFilename) *pFilename = fname_buf; - if (pExt) *pExt = ext_buf; - return true; -#else - char dirtmp[1024], nametmp[1024]; - strcpy_safe(dirtmp, sizeof(dirtmp), p); - strcpy_safe(nametmp, sizeof(nametmp), p); - - if (pDrive) - pDrive->resize(0); - - const char *pDirName = dirname(dirtmp); - const char* pBaseName = basename(nametmp); - if ((!pDirName) || (!pBaseName)) - return false; - - if (pDir) - { - *pDir = pDirName; - if ((pDir->size()) && (pDir->back() != '/')) - *pDir += "/"; - } - - if (pFilename) - { - *pFilename = pBaseName; - string_remove_extension(*pFilename); - } - - if (pExt) - { - *pExt = pBaseName; - *pExt = string_get_extension(*pExt); - if (pExt->size()) - *pExt = "." + *pExt; - } - - return true; -#endif - } - - inline bool is_path_separator(char c) - { -#ifdef _WIN32 - return (c == '/') || (c == '\\'); -#else - return (c == '/'); -#endif - } - - inline bool is_drive_separator(char c) - { -#ifdef _WIN32 - return (c == ':'); -#else - (void)c; - return false; -#endif - } - - inline void string_combine_path(std::string &dst, const char *p, const char *q) - { - std::string temp(p); - if (temp.size() && !is_path_separator(q[0])) - { - if (!is_path_separator(temp.back())) - temp.append(1, BASISU_PATH_SEPERATOR_CHAR); - } - temp += q; - dst.swap(temp); - } - - inline void string_combine_path(std::string &dst, const char *p, const char *q, const char *r) - { - string_combine_path(dst, p, q); - string_combine_path(dst, dst.c_str(), r); - } - - inline void string_combine_path_and_extension(std::string &dst, const char *p, const char *q, const char *r, const char *pExt) - { - string_combine_path(dst, p, q, r); - if ((!string_ends_with(dst, '.')) && (pExt[0]) && (pExt[0] != '.')) - dst.append(1, '.'); - dst.append(pExt); - } - - inline bool string_get_pathname(const char *p, std::string &path) - { - std::string temp_drive, temp_path; - if (!string_split_path(p, &temp_drive, &temp_path, NULL, NULL)) - return false; - string_combine_path(path, temp_drive.c_str(), temp_path.c_str()); - return true; - } - - inline bool string_get_filename(const char *p, std::string &filename) - { - std::string temp_ext; - if (!string_split_path(p, nullptr, nullptr, &filename, &temp_ext)) - return false; - filename += temp_ext; - return true; - } - - class rand - { - std::mt19937 m_mt; - - public: - rand() { } - - rand(uint32_t s) { seed(s); } - void seed(uint32_t s) { m_mt.seed(s); } - - // between [l,h] - int irand(int l, int h) { std::uniform_int_distribution d(l, h); return d(m_mt); } - - uint32_t urand32() { return static_cast(irand(INT32_MIN, INT32_MAX)); } - - bool bit() { return irand(0, 1) == 1; } - - uint8_t byte() { return static_cast(urand32()); } - - // between [l,h) - float frand(float l, float h) { std::uniform_real_distribution d(l, h); return d(m_mt); } - - float gaussian(float mean, float stddev) { std::normal_distribution d(mean, stddev); return d(m_mt); } - }; - - class priority_queue - { - public: - priority_queue() : - m_size(0) - { - } - - void clear() - { - m_heap.clear(); - m_size = 0; - } - - void init(uint32_t max_entries, uint32_t first_index, float first_priority) - { - m_heap.resize(max_entries + 1); - m_heap[1].m_index = first_index; - m_heap[1].m_priority = first_priority; - m_size = 1; - } - - inline uint32_t size() const { return m_size; } - - inline uint32_t get_top_index() const { return m_heap[1].m_index; } - inline float get_top_priority() const { return m_heap[1].m_priority; } - - inline void delete_top() - { - assert(m_size > 0); - m_heap[1] = m_heap[m_size]; - m_size--; - if (m_size) - down_heap(1); - } - - inline void add_heap(uint32_t index, float priority) - { - m_size++; - - uint32_t k = m_size; - - if (m_size >= m_heap.size()) - m_heap.resize(m_size + 1); - - for (;;) - { - uint32_t parent_index = k >> 1; - if ((!parent_index) || (m_heap[parent_index].m_priority > priority)) - break; - m_heap[k] = m_heap[parent_index]; - k = parent_index; - } - - m_heap[k].m_index = index; - m_heap[k].m_priority = priority; - } - - private: - struct entry - { - uint32_t m_index; - float m_priority; - }; - - basisu::vector m_heap; - uint32_t m_size; - - // Push down entry at index - inline void down_heap(uint32_t heap_index) - { - uint32_t orig_index = m_heap[heap_index].m_index; - const float orig_priority = m_heap[heap_index].m_priority; - - uint32_t child_index; - while ((child_index = (heap_index << 1)) <= m_size) - { - if ((child_index < m_size) && (m_heap[child_index].m_priority < m_heap[child_index + 1].m_priority)) ++child_index; - if (orig_priority > m_heap[child_index].m_priority) - break; - m_heap[heap_index] = m_heap[child_index]; - heap_index = child_index; - } - - m_heap[heap_index].m_index = orig_index; - m_heap[heap_index].m_priority = orig_priority; - } - }; - - // Tree structured vector quantization (TSVQ) - - template - class tree_vector_quant - { - public: - typedef TrainingVectorType training_vec_type; - typedef std::pair training_vec_with_weight; - typedef basisu::vector< training_vec_with_weight > array_of_weighted_training_vecs; - - tree_vector_quant() : - m_next_codebook_index(0) - { - } - - void clear() - { - clear_vector(m_training_vecs); - clear_vector(m_nodes); - m_next_codebook_index = 0; - } - - void add_training_vec(const TrainingVectorType &v, uint64_t weight) { m_training_vecs.push_back(std::make_pair(v, weight)); } - - size_t get_total_training_vecs() const { return m_training_vecs.size(); } - const array_of_weighted_training_vecs &get_training_vecs() const { return m_training_vecs; } - array_of_weighted_training_vecs &get_training_vecs() { return m_training_vecs; } - - void retrieve(basisu::vector< basisu::vector > &codebook) const - { - for (uint32_t i = 0; i < m_nodes.size(); i++) - { - const tsvq_node &n = m_nodes[i]; - if (!n.is_leaf()) - continue; - - codebook.resize(codebook.size() + 1); - codebook.back() = n.m_training_vecs; - } - } - - void retrieve(basisu::vector &codebook) const - { - for (uint32_t i = 0; i < m_nodes.size(); i++) - { - const tsvq_node &n = m_nodes[i]; - if (!n.is_leaf()) - continue; - - codebook.resize(codebook.size() + 1); - codebook.back() = n.m_origin; - } - } - - void retrieve(uint32_t max_clusters, basisu::vector &codebook) const - { - uint_vec node_stack; - node_stack.reserve(512); - - codebook.resize(0); - codebook.reserve(max_clusters); - - uint32_t node_index = 0; - - while (true) - { - const tsvq_node& cur = m_nodes[node_index]; - - if (cur.is_leaf() || ((2 + cur.m_codebook_index) > (int)max_clusters)) - { - codebook.resize(codebook.size() + 1); - codebook.back() = cur.m_training_vecs; - - if (node_stack.empty()) - break; - - node_index = node_stack.back(); - node_stack.pop_back(); - continue; - } - - node_stack.push_back(cur.m_right_index); - node_index = cur.m_left_index; - } - } - - bool generate(uint32_t max_size) - { - if (!m_training_vecs.size()) - return false; - - m_next_codebook_index = 0; - - clear_vector(m_nodes); - m_nodes.reserve(max_size * 2 + 1); - - m_nodes.push_back(prepare_root()); - - priority_queue var_heap; - var_heap.init(max_size, 0, m_nodes[0].m_var); - - basisu::vector l_children, r_children; - - // Now split the worst nodes - l_children.reserve(m_training_vecs.size() + 1); - r_children.reserve(m_training_vecs.size() + 1); - - uint32_t total_leaf_nodes = 1; - - //interval_timer tm; - //tm.start(); - - while ((var_heap.size()) && (total_leaf_nodes < max_size)) - { - const uint32_t node_index = var_heap.get_top_index(); - const tsvq_node &node = m_nodes[node_index]; - - assert(node.m_var == var_heap.get_top_priority()); - assert(node.is_leaf()); - - var_heap.delete_top(); - - if (node.m_training_vecs.size() > 1) - { - if (split_node(node_index, var_heap, l_children, r_children)) - { - // This removes one leaf node (making an internal node) and replaces it with two new leaves, so +1 total. - total_leaf_nodes += 1; - } - } - } - - //debug_printf("tree_vector_quant::generate %u: %3.3f secs\n", TrainingVectorType::num_elements, tm.get_elapsed_secs()); - - return true; - } - - private: - class tsvq_node - { - public: - inline tsvq_node() : m_weight(0), m_origin(cZero), m_left_index(-1), m_right_index(-1), m_codebook_index(-1) { } - - // vecs is erased - inline void set(const TrainingVectorType &org, uint64_t weight, float var, basisu::vector &vecs) { m_origin = org; m_weight = weight; m_var = var; m_training_vecs.swap(vecs); } - - inline bool is_leaf() const { return m_left_index < 0; } - - float m_var; - uint64_t m_weight; - TrainingVectorType m_origin; - int32_t m_left_index, m_right_index; - basisu::vector m_training_vecs; - int m_codebook_index; - }; - - typedef basisu::vector tsvq_node_vec; - tsvq_node_vec m_nodes; - - array_of_weighted_training_vecs m_training_vecs; - - uint32_t m_next_codebook_index; - - tsvq_node prepare_root() const - { - double ttsum = 0.0f; - - // Prepare root node containing all training vectors - tsvq_node root; - root.m_training_vecs.reserve(m_training_vecs.size()); - - for (uint32_t i = 0; i < m_training_vecs.size(); i++) - { - const TrainingVectorType &v = m_training_vecs[i].first; - const uint64_t weight = m_training_vecs[i].second; - - root.m_training_vecs.push_back(i); - - root.m_origin += (v * static_cast(weight)); - root.m_weight += weight; - - ttsum += v.dot(v) * weight; - } - - root.m_var = static_cast(ttsum - (root.m_origin.dot(root.m_origin) / root.m_weight)); - - root.m_origin *= (1.0f / root.m_weight); - - return root; - } - - bool split_node(uint32_t node_index, priority_queue &var_heap, basisu::vector &l_children, basisu::vector &r_children) - { - TrainingVectorType l_child_org, r_child_org; - uint64_t l_weight = 0, r_weight = 0; - float l_var = 0.0f, r_var = 0.0f; - - // Compute initial left/right child origins - if (!prep_split(m_nodes[node_index], l_child_org, r_child_org)) - return false; - - // Use k-means iterations to refine these children vectors - if (!refine_split(m_nodes[node_index], l_child_org, l_weight, l_var, l_children, r_child_org, r_weight, r_var, r_children)) - return false; - - // Create children - const uint32_t l_child_index = (uint32_t)m_nodes.size(), r_child_index = (uint32_t)m_nodes.size() + 1; - - m_nodes[node_index].m_left_index = l_child_index; - m_nodes[node_index].m_right_index = r_child_index; - - m_nodes[node_index].m_codebook_index = m_next_codebook_index; - m_next_codebook_index++; - - m_nodes.resize(m_nodes.size() + 2); - - tsvq_node &l_child = m_nodes[l_child_index], &r_child = m_nodes[r_child_index]; - - l_child.set(l_child_org, l_weight, l_var, l_children); - r_child.set(r_child_org, r_weight, r_var, r_children); - - if ((l_child.m_var <= 0.0f) && (l_child.m_training_vecs.size() > 1)) - { - TrainingVectorType v(m_training_vecs[l_child.m_training_vecs[0]].first); - - for (uint32_t i = 1; i < l_child.m_training_vecs.size(); i++) - { - if (!(v == m_training_vecs[l_child.m_training_vecs[i]].first)) - { - l_child.m_var = 1e-4f; - break; - } - } - } - - if ((r_child.m_var <= 0.0f) && (r_child.m_training_vecs.size() > 1)) - { - TrainingVectorType v(m_training_vecs[r_child.m_training_vecs[0]].first); - - for (uint32_t i = 1; i < r_child.m_training_vecs.size(); i++) - { - if (!(v == m_training_vecs[r_child.m_training_vecs[i]].first)) - { - r_child.m_var = 1e-4f; - break; - } - } - } - - if ((l_child.m_var > 0.0f) && (l_child.m_training_vecs.size() > 1)) - var_heap.add_heap(l_child_index, l_child.m_var); - - if ((r_child.m_var > 0.0f) && (r_child.m_training_vecs.size() > 1)) - var_heap.add_heap(r_child_index, r_child.m_var); - - return true; - } - - TrainingVectorType compute_split_axis(const tsvq_node &node) const - { - const uint32_t N = TrainingVectorType::num_elements; - - matrix cmatrix; - - if ((N != 16) || (!g_cpu_supports_sse41)) - { - cmatrix.set_zero(); - - // Compute covariance matrix from weighted input vectors - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - { - const TrainingVectorType v(m_training_vecs[node.m_training_vecs[i]].first - node.m_origin); - const TrainingVectorType w(static_cast(m_training_vecs[node.m_training_vecs[i]].second) * v); - - for (uint32_t x = 0; x < N; x++) - for (uint32_t y = x; y < N; y++) - cmatrix[x][y] = cmatrix[x][y] + v[x] * w[y]; - } - } - else - { -#if BASISU_SUPPORT_SSE - // Specialize the case with 16x16 matrices, which are quite expensive without SIMD. - // This SSE function takes pointers to void types, so do some sanity checks. - assert(sizeof(TrainingVectorType) == sizeof(float) * 16); - assert(sizeof(training_vec_with_weight) == sizeof(std::pair)); - update_covar_matrix_16x16_sse41(node.m_training_vecs.size(), m_training_vecs.data(), &node.m_origin, node.m_training_vecs.data(), &cmatrix); -#endif - } - - const float renorm_scale = 1.0f / node.m_weight; - - for (uint32_t x = 0; x < N; x++) - for (uint32_t y = x; y < N; y++) - cmatrix[x][y] *= renorm_scale; - - // Diagonal flip - for (uint32_t x = 0; x < (N - 1); x++) - for (uint32_t y = x + 1; y < N; y++) - cmatrix[y][x] = cmatrix[x][y]; - - return compute_pca_from_covar(cmatrix); - } - - bool prep_split(const tsvq_node &node, TrainingVectorType &l_child_result, TrainingVectorType &r_child_result) const - { - //const uint32_t N = TrainingVectorType::num_elements; - - if (2 == node.m_training_vecs.size()) - { - l_child_result = m_training_vecs[node.m_training_vecs[0]].first; - r_child_result = m_training_vecs[node.m_training_vecs[1]].first; - return true; - } - - TrainingVectorType axis(compute_split_axis(node)), l_child(0.0f), r_child(0.0f); - double l_weight = 0.0f, r_weight = 0.0f; - - // Compute initial left/right children - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - { - const float weight = (float)m_training_vecs[node.m_training_vecs[i]].second; - - const TrainingVectorType &v = m_training_vecs[node.m_training_vecs[i]].first; - - double t = (v - node.m_origin).dot(axis); - if (t >= 0.0f) - { - r_child += v * weight; - r_weight += weight; - } - else - { - l_child += v * weight; - l_weight += weight; - } - } - - if ((l_weight > 0.0f) && (r_weight > 0.0f)) - { - l_child_result = l_child * static_cast(1.0f / l_weight); - r_child_result = r_child * static_cast(1.0f / r_weight); - } - else - { - TrainingVectorType l(1e+20f); - TrainingVectorType h(-1e+20f); - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - { - const TrainingVectorType& v = m_training_vecs[node.m_training_vecs[i]].first; - - l = TrainingVectorType::component_min(l, v); - h = TrainingVectorType::component_max(h, v); - } - - TrainingVectorType r(h - l); - - float largest_axis_v = 0.0f; - int largest_axis_index = -1; - for (uint32_t i = 0; i < TrainingVectorType::num_elements; i++) - { - if (r[i] > largest_axis_v) - { - largest_axis_v = r[i]; - largest_axis_index = i; - } - } - - if (largest_axis_index < 0) - return false; - - basisu::vector keys(node.m_training_vecs.size()); - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - keys[i] = m_training_vecs[node.m_training_vecs[i]].first[largest_axis_index]; - - uint_vec indices(node.m_training_vecs.size()); - indirect_sort((uint32_t)node.m_training_vecs.size(), &indices[0], &keys[0]); - - l_child.set_zero(); - l_weight = 0; - - r_child.set_zero(); - r_weight = 0; - - const uint32_t half_index = (uint32_t)node.m_training_vecs.size() / 2; - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - { - const float weight = (float)m_training_vecs[node.m_training_vecs[i]].second; - - const TrainingVectorType& v = m_training_vecs[node.m_training_vecs[i]].first; - - if (i < half_index) - { - l_child += v * weight; - l_weight += weight; - } - else - { - r_child += v * weight; - r_weight += weight; - } - } - - if ((l_weight > 0.0f) && (r_weight > 0.0f)) - { - l_child_result = l_child * static_cast(1.0f / l_weight); - r_child_result = r_child * static_cast(1.0f / r_weight); - } - else - { - l_child_result = l; - r_child_result = h; - } - } - - return true; - } - - bool refine_split(const tsvq_node &node, - TrainingVectorType &l_child, uint64_t &l_weight, float &l_var, basisu::vector &l_children, - TrainingVectorType &r_child, uint64_t &r_weight, float &r_var, basisu::vector &r_children) const - { - l_children.reserve(node.m_training_vecs.size()); - r_children.reserve(node.m_training_vecs.size()); - - float prev_total_variance = 1e+10f; - - // Refine left/right children locations using k-means iterations - const uint32_t cMaxIters = 6; - for (uint32_t iter = 0; iter < cMaxIters; iter++) - { - l_children.resize(0); - r_children.resize(0); - - TrainingVectorType new_l_child(cZero), new_r_child(cZero); - - double l_ttsum = 0.0f, r_ttsum = 0.0f; - - l_weight = 0; - r_weight = 0; - - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - { - const TrainingVectorType &v = m_training_vecs[node.m_training_vecs[i]].first; - const uint64_t weight = m_training_vecs[node.m_training_vecs[i]].second; - - double left_dist2 = l_child.squared_distance_d(v), right_dist2 = r_child.squared_distance_d(v); - - if (left_dist2 >= right_dist2) - { - new_r_child += (v * static_cast(weight)); - r_weight += weight; - - r_ttsum += weight * v.dot(v); - r_children.push_back(node.m_training_vecs[i]); - } - else - { - new_l_child += (v * static_cast(weight)); - l_weight += weight; - - l_ttsum += weight * v.dot(v); - l_children.push_back(node.m_training_vecs[i]); - } - } - - // Node is unsplittable using the above algorithm - try something else to split it up. - if ((!l_weight) || (!r_weight)) - { - l_children.resize(0); - new_l_child.set(0.0f); - l_ttsum = 0.0f; - l_weight = 0; - - r_children.resize(0); - new_r_child.set(0.0f); - r_ttsum = 0.0f; - r_weight = 0; - - TrainingVectorType firstVec; - for (uint32_t i = 0; i < node.m_training_vecs.size(); i++) - { - const TrainingVectorType& v = m_training_vecs[node.m_training_vecs[i]].first; - const uint64_t weight = m_training_vecs[node.m_training_vecs[i]].second; - - if ((!i) || (v == firstVec)) - { - firstVec = v; - - new_r_child += (v * static_cast(weight)); - r_weight += weight; - - r_ttsum += weight * v.dot(v); - r_children.push_back(node.m_training_vecs[i]); - } - else - { - new_l_child += (v * static_cast(weight)); - l_weight += weight; - - l_ttsum += weight * v.dot(v); - l_children.push_back(node.m_training_vecs[i]); - } - } - - if ((!l_weight) || (!r_weight)) - return false; - } - - l_var = static_cast(l_ttsum - (new_l_child.dot(new_l_child) / l_weight)); - r_var = static_cast(r_ttsum - (new_r_child.dot(new_r_child) / r_weight)); - - new_l_child *= (1.0f / l_weight); - new_r_child *= (1.0f / r_weight); - - l_child = new_l_child; - r_child = new_r_child; - - float total_var = l_var + r_var; - const float cGiveupVariance = .00001f; - if (total_var < cGiveupVariance) - break; - - // Check to see if the variance has settled - const float cVarianceDeltaThresh = .00125f; - if (((prev_total_variance - total_var) / total_var) < cVarianceDeltaThresh) - break; - - prev_total_variance = total_var; - } - - return true; - } - }; - - struct weighted_block_group - { - uint64_t m_total_weight; - uint_vec m_indices; - }; - - template - bool generate_hierarchical_codebook_threaded_internal(Quantizer& q, - uint32_t max_codebook_size, uint32_t max_parent_codebook_size, - basisu::vector& codebook, - basisu::vector& parent_codebook, - uint32_t max_threads, bool limit_clusterizers, job_pool *pJob_pool) - { - codebook.resize(0); - parent_codebook.resize(0); - - if ((max_threads <= 1) || (q.get_training_vecs().size() < 256) || (max_codebook_size < max_threads * 16)) - { - if (!q.generate(max_codebook_size)) - return false; - - q.retrieve(codebook); - - if (max_parent_codebook_size) - q.retrieve(max_parent_codebook_size, parent_codebook); - - return true; - } - - const uint32_t cMaxThreads = 16; - if (max_threads > cMaxThreads) - max_threads = cMaxThreads; - - if (!q.generate(max_threads)) - return false; - - basisu::vector initial_codebook; - - q.retrieve(initial_codebook); - - if (initial_codebook.size() < max_threads) - { - codebook = initial_codebook; - - if (max_parent_codebook_size) - q.retrieve(max_parent_codebook_size, parent_codebook); - - return true; - } - - Quantizer quantizers[cMaxThreads]; - - bool success_flags[cMaxThreads]; - clear_obj(success_flags); - - basisu::vector local_clusters[cMaxThreads]; - basisu::vector local_parent_clusters[cMaxThreads]; - - for (uint32_t thread_iter = 0; thread_iter < max_threads; thread_iter++) - { -#ifndef __EMSCRIPTEN__ - pJob_pool->add_job( [thread_iter, &local_clusters, &local_parent_clusters, &success_flags, &quantizers, &initial_codebook, &q, &limit_clusterizers, &max_codebook_size, &max_threads, &max_parent_codebook_size] { -#endif - - Quantizer& lq = quantizers[thread_iter]; - uint_vec& cluster_indices = initial_codebook[thread_iter]; - - uint_vec local_to_global(cluster_indices.size()); - - for (uint32_t i = 0; i < cluster_indices.size(); i++) - { - const uint32_t global_training_vec_index = cluster_indices[i]; - local_to_global[i] = global_training_vec_index; - - lq.add_training_vec(q.get_training_vecs()[global_training_vec_index].first, q.get_training_vecs()[global_training_vec_index].second); - } - - const uint32_t max_clusters = limit_clusterizers ? ((max_codebook_size + max_threads - 1) / max_threads) : (uint32_t)lq.get_total_training_vecs(); - - success_flags[thread_iter] = lq.generate(max_clusters); - - if (success_flags[thread_iter]) - { - lq.retrieve(local_clusters[thread_iter]); - - for (uint32_t i = 0; i < local_clusters[thread_iter].size(); i++) - { - for (uint32_t j = 0; j < local_clusters[thread_iter][i].size(); j++) - local_clusters[thread_iter][i][j] = local_to_global[local_clusters[thread_iter][i][j]]; - } - - if (max_parent_codebook_size) - { - lq.retrieve((max_parent_codebook_size + max_threads - 1) / max_threads, local_parent_clusters[thread_iter]); - - for (uint32_t i = 0; i < local_parent_clusters[thread_iter].size(); i++) - { - for (uint32_t j = 0; j < local_parent_clusters[thread_iter][i].size(); j++) - local_parent_clusters[thread_iter][i][j] = local_to_global[local_parent_clusters[thread_iter][i][j]]; - } - } - } - -#ifndef __EMSCRIPTEN__ - } ); -#endif - - } // thread_iter - -#ifndef __EMSCRIPTEN__ - pJob_pool->wait_for_all(); -#endif - - uint32_t total_clusters = 0, total_parent_clusters = 0; - - for (int thread_iter = 0; thread_iter < (int)max_threads; thread_iter++) - { - if (!success_flags[thread_iter]) - return false; - total_clusters += (uint32_t)local_clusters[thread_iter].size(); - total_parent_clusters += (uint32_t)local_parent_clusters[thread_iter].size(); - } - - codebook.reserve(total_clusters); - parent_codebook.reserve(total_parent_clusters); - - for (uint32_t thread_iter = 0; thread_iter < max_threads; thread_iter++) - { - for (uint32_t j = 0; j < local_clusters[thread_iter].size(); j++) - { - codebook.resize(codebook.size() + 1); - codebook.back().swap(local_clusters[thread_iter][j]); - } - - for (uint32_t j = 0; j < local_parent_clusters[thread_iter].size(); j++) - { - parent_codebook.resize(parent_codebook.size() + 1); - parent_codebook.back().swap(local_parent_clusters[thread_iter][j]); - } - } - - return true; - } - - template - bool generate_hierarchical_codebook_threaded(Quantizer& q, - uint32_t max_codebook_size, uint32_t max_parent_codebook_size, - basisu::vector& codebook, - basisu::vector& parent_codebook, - uint32_t max_threads, job_pool *pJob_pool, - bool even_odd_input_pairs_equal) - { - typedef bit_hasher training_vec_bit_hasher; - - typedef std::unordered_map < typename Quantizer::training_vec_type, weighted_block_group, - training_vec_bit_hasher> group_hash; - - //interval_timer tm; - //tm.start(); - - group_hash unique_vecs; - - unique_vecs.reserve(20000); - - weighted_block_group g; - - if (even_odd_input_pairs_equal) - { - g.m_indices.resize(2); - - assert(q.get_training_vecs().size() >= 2 && (q.get_training_vecs().size() & 1) == 0); - - for (uint32_t i = 0; i < q.get_training_vecs().size(); i += 2) - { - assert(q.get_training_vecs()[i].first == q.get_training_vecs()[i + 1].first); - - g.m_total_weight = q.get_training_vecs()[i].second + q.get_training_vecs()[i + 1].second; - g.m_indices[0] = i; - g.m_indices[1] = i + 1; - - auto ins_res = unique_vecs.insert(std::make_pair(q.get_training_vecs()[i].first, g)); - - if (!ins_res.second) - { - (ins_res.first)->second.m_total_weight += g.m_total_weight; - (ins_res.first)->second.m_indices.push_back(i); - (ins_res.first)->second.m_indices.push_back(i + 1); - } - } - } - else - { - g.m_indices.resize(1); - - for (uint32_t i = 0; i < q.get_training_vecs().size(); i++) - { - g.m_total_weight = q.get_training_vecs()[i].second; - g.m_indices[0] = i; - - auto ins_res = unique_vecs.insert(std::make_pair(q.get_training_vecs()[i].first, g)); - - if (!ins_res.second) - { - (ins_res.first)->second.m_total_weight += g.m_total_weight; - (ins_res.first)->second.m_indices.push_back(i); - } - } - } - - //debug_printf("generate_hierarchical_codebook_threaded: %u training vectors, %u unique training vectors, %3.3f secs\n", q.get_total_training_vecs(), (uint32_t)unique_vecs.size(), tm.get_elapsed_secs()); - debug_printf("generate_hierarchical_codebook_threaded: %u training vectors, %u unique training vectors\n", q.get_total_training_vecs(), (uint32_t)unique_vecs.size()); - - Quantizer group_quant; - typedef typename group_hash::const_iterator group_hash_const_iter; - basisu::vector unique_vec_iters; - unique_vec_iters.reserve(unique_vecs.size()); - - for (auto iter = unique_vecs.begin(); iter != unique_vecs.end(); ++iter) - { - group_quant.add_training_vec(iter->first, iter->second.m_total_weight); - unique_vec_iters.push_back(iter); - } - - bool limit_clusterizers = true; - if (unique_vecs.size() <= max_codebook_size) - limit_clusterizers = false; - - debug_printf("Limit clusterizers: %u\n", limit_clusterizers); - - basisu::vector group_codebook, group_parent_codebook; - bool status = generate_hierarchical_codebook_threaded_internal(group_quant, - max_codebook_size, max_parent_codebook_size, - group_codebook, - group_parent_codebook, - (unique_vecs.size() < 65536*4) ? 1 : max_threads, limit_clusterizers, pJob_pool); - - if (!status) - return false; - - codebook.resize(0); - for (uint32_t i = 0; i < group_codebook.size(); i++) - { - codebook.resize(codebook.size() + 1); - - for (uint32_t j = 0; j < group_codebook[i].size(); j++) - { - const uint32_t group_index = group_codebook[i][j]; - - typename group_hash::const_iterator group_iter = unique_vec_iters[group_index]; - const uint_vec& training_vec_indices = group_iter->second.m_indices; - - append_vector(codebook.back(), training_vec_indices); - } - } - - parent_codebook.resize(0); - for (uint32_t i = 0; i < group_parent_codebook.size(); i++) - { - parent_codebook.resize(parent_codebook.size() + 1); - - for (uint32_t j = 0; j < group_parent_codebook[i].size(); j++) - { - const uint32_t group_index = group_parent_codebook[i][j]; - - typename group_hash::const_iterator group_iter = unique_vec_iters[group_index]; - const uint_vec& training_vec_indices = group_iter->second.m_indices; - - append_vector(parent_codebook.back(), training_vec_indices); - } - } - - return true; - } - - // Canonical Huffman coding - - class histogram - { - basisu::vector m_hist; - - public: - histogram(uint32_t size = 0) { init(size); } - - void clear() - { - clear_vector(m_hist); - } - - void init(uint32_t size) - { - m_hist.resize(0); - m_hist.resize(size); - } - - inline uint32_t size() const { return static_cast(m_hist.size()); } - - inline const uint32_t &operator[] (uint32_t index) const - { - return m_hist[index]; - } - - inline uint32_t &operator[] (uint32_t index) - { - return m_hist[index]; - } - - inline void inc(uint32_t index) - { - m_hist[index]++; - } - - uint64_t get_total() const - { - uint64_t total = 0; - for (uint32_t i = 0; i < m_hist.size(); ++i) - total += m_hist[i]; - return total; - } - - double get_entropy() const - { - double total = static_cast(get_total()); - if (total == 0.0f) - return 0.0f; - - const double inv_total = 1.0f / total; - const double neg_inv_log2 = -1.0f / log(2.0f); - - double e = 0.0f; - for (uint32_t i = 0; i < m_hist.size(); i++) - if (m_hist[i]) - e += log(m_hist[i] * inv_total) * neg_inv_log2 * static_cast(m_hist[i]); - - return e; - } - }; - - struct sym_freq - { - uint32_t m_key; - uint16_t m_sym_index; - }; - - sym_freq *canonical_huffman_radix_sort_syms(uint32_t num_syms, sym_freq *pSyms0, sym_freq *pSyms1); - void canonical_huffman_calculate_minimum_redundancy(sym_freq *A, int num_syms); - void canonical_huffman_enforce_max_code_size(int *pNum_codes, int code_list_len, int max_code_size); - - class huffman_encoding_table - { - public: - huffman_encoding_table() - { - } - - void clear() - { - clear_vector(m_codes); - clear_vector(m_code_sizes); - } - - bool init(const histogram &h, uint32_t max_code_size = cHuffmanMaxSupportedCodeSize) - { - return init(h.size(), &h[0], max_code_size); - } - - bool init(uint32_t num_syms, const uint16_t *pFreq, uint32_t max_code_size); - bool init(uint32_t num_syms, const uint32_t *pSym_freq, uint32_t max_code_size); - - inline const uint16_vec &get_codes() const { return m_codes; } - inline const uint8_vec &get_code_sizes() const { return m_code_sizes; } - - uint32_t get_total_used_codes() const - { - for (int i = static_cast(m_code_sizes.size()) - 1; i >= 0; i--) - if (m_code_sizes[i]) - return i + 1; - return 0; - } - - private: - uint16_vec m_codes; - uint8_vec m_code_sizes; - }; - - class bitwise_coder - { - public: - bitwise_coder() : - m_bit_buffer(0), - m_bit_buffer_size(0), - m_total_bits(0) - { - } - - inline void clear() - { - clear_vector(m_bytes); - m_bit_buffer = 0; - m_bit_buffer_size = 0; - m_total_bits = 0; - } - - inline const uint8_vec &get_bytes() const { return m_bytes; } - - inline uint64_t get_total_bits() const { return m_total_bits; } - inline void clear_total_bits() { m_total_bits = 0; } - - inline void init(uint32_t reserve_size = 1024) - { - m_bytes.reserve(reserve_size); - m_bytes.resize(0); - - m_bit_buffer = 0; - m_bit_buffer_size = 0; - m_total_bits = 0; - } - - inline uint32_t flush() - { - if (m_bit_buffer_size) - { - m_total_bits += 8 - (m_bit_buffer_size & 7); - append_byte(static_cast(m_bit_buffer)); - - m_bit_buffer = 0; - m_bit_buffer_size = 0; - - return 8; - } - - return 0; - } - - inline uint32_t put_bits(uint32_t bits, uint32_t num_bits) - { - assert(num_bits <= 32); - assert(bits < (1ULL << num_bits)); - - if (!num_bits) - return 0; - - m_total_bits += num_bits; - - uint64_t v = (static_cast(bits) << m_bit_buffer_size) | m_bit_buffer; - m_bit_buffer_size += num_bits; - - while (m_bit_buffer_size >= 8) - { - append_byte(static_cast(v)); - v >>= 8; - m_bit_buffer_size -= 8; - } - - m_bit_buffer = static_cast(v); - return num_bits; - } - - inline uint32_t put_code(uint32_t sym, const huffman_encoding_table &tab) - { - uint32_t code = tab.get_codes()[sym]; - uint32_t code_size = tab.get_code_sizes()[sym]; - assert(code_size >= 1); - put_bits(code, code_size); - return code_size; - } - - inline uint32_t put_truncated_binary(uint32_t v, uint32_t n) - { - assert((n >= 2) && (v < n)); - - uint32_t k = floor_log2i(n); - uint32_t u = (1 << (k + 1)) - n; - - if (v < u) - return put_bits(v, k); - - uint32_t x = v + u; - assert((x >> 1) >= u); - - put_bits(x >> 1, k); - put_bits(x & 1, 1); - return k + 1; - } - - inline uint32_t put_rice(uint32_t v, uint32_t m) - { - assert(m); - - const uint64_t start_bits = m_total_bits; - - uint32_t q = v >> m, r = v & ((1 << m) - 1); - - // rice coding sanity check - assert(q <= 64); - - for (; q > 16; q -= 16) - put_bits(0xFFFF, 16); - - put_bits((1 << q) - 1, q); - put_bits(r << 1, m + 1); - - return (uint32_t)(m_total_bits - start_bits); - } - - inline uint32_t put_vlc(uint32_t v, uint32_t chunk_bits) - { - assert(chunk_bits); - - const uint32_t chunk_size = 1 << chunk_bits; - const uint32_t chunk_mask = chunk_size - 1; - - uint32_t total_bits = 0; - - for ( ; ; ) - { - uint32_t next_v = v >> chunk_bits; - - total_bits += put_bits((v & chunk_mask) | (next_v ? chunk_size : 0), chunk_bits + 1); - if (!next_v) - break; - - v = next_v; - } - - return total_bits; - } - - uint32_t emit_huffman_table(const huffman_encoding_table &tab); - - private: - uint8_vec m_bytes; - uint32_t m_bit_buffer, m_bit_buffer_size; - uint64_t m_total_bits; - - void append_byte(uint8_t c) - { - m_bytes.resize(m_bytes.size() + 1); - m_bytes.back() = c; - } - - static void end_nonzero_run(uint16_vec &syms, uint32_t &run_size, uint32_t len); - static void end_zero_run(uint16_vec &syms, uint32_t &run_size); - }; - - class huff2D - { - public: - huff2D() { } - huff2D(uint32_t bits_per_sym, uint32_t total_syms_per_group) { init(bits_per_sym, total_syms_per_group); } - - inline const histogram &get_histogram() const { return m_histogram; } - inline const huffman_encoding_table &get_encoding_table() const { return m_encoding_table; } - - inline void init(uint32_t bits_per_sym, uint32_t total_syms_per_group) - { - assert((bits_per_sym * total_syms_per_group) <= 16 && total_syms_per_group >= 1 && bits_per_sym >= 1); - - m_bits_per_sym = bits_per_sym; - m_total_syms_per_group = total_syms_per_group; - m_cur_sym_bits = 0; - m_cur_num_syms = 0; - m_decode_syms_remaining = 0; - m_next_decoder_group_index = 0; - - m_histogram.init(1 << (bits_per_sym * total_syms_per_group)); - } - - inline void clear() - { - m_group_bits.clear(); - - m_cur_sym_bits = 0; - m_cur_num_syms = 0; - m_decode_syms_remaining = 0; - m_next_decoder_group_index = 0; - } - - inline void emit(uint32_t sym) - { - m_cur_sym_bits |= (sym << (m_cur_num_syms * m_bits_per_sym)); - m_cur_num_syms++; - - if (m_cur_num_syms == m_total_syms_per_group) - flush(); - } - - inline void flush() - { - if (m_cur_num_syms) - { - m_group_bits.push_back(m_cur_sym_bits); - m_histogram.inc(m_cur_sym_bits); - - m_cur_sym_bits = 0; - m_cur_num_syms = 0; - } - } - - inline bool start_encoding(uint32_t code_size_limit = 16) - { - flush(); - - if (!m_encoding_table.init(m_histogram, code_size_limit)) - return false; - - m_decode_syms_remaining = 0; - m_next_decoder_group_index = 0; - - return true; - } - - inline uint32_t emit_next_sym(bitwise_coder &c) - { - uint32_t bits = 0; - - if (!m_decode_syms_remaining) - { - bits = c.put_code(m_group_bits[m_next_decoder_group_index++], m_encoding_table); - m_decode_syms_remaining = m_total_syms_per_group; - } - - m_decode_syms_remaining--; - return bits; - } - - inline void emit_flush() - { - m_decode_syms_remaining = 0; - } - - private: - uint_vec m_group_bits; - huffman_encoding_table m_encoding_table; - histogram m_histogram; - uint32_t m_bits_per_sym, m_total_syms_per_group, m_cur_sym_bits, m_cur_num_syms, m_next_decoder_group_index, m_decode_syms_remaining; - }; - - bool huffman_test(int rand_seed); - - // VQ index reordering - - class palette_index_reorderer - { - public: - palette_index_reorderer() - { - } - - void clear() - { - clear_vector(m_hist); - clear_vector(m_total_count_to_picked); - clear_vector(m_entries_picked); - clear_vector(m_entries_to_do); - clear_vector(m_remap_table); - } - - // returns [0,1] distance of entry i to entry j - typedef float(*pEntry_dist_func)(uint32_t i, uint32_t j, void *pCtx); - - void init(uint32_t num_indices, const uint32_t *pIndices, uint32_t num_syms, pEntry_dist_func pDist_func, void *pCtx, float dist_func_weight); - - // Table remaps old to new symbol indices - inline const uint_vec &get_remap_table() const { return m_remap_table; } - - private: - uint_vec m_hist, m_total_count_to_picked, m_entries_picked, m_entries_to_do, m_remap_table; - - inline uint32_t get_hist(int i, int j, int n) const { return (i > j) ? m_hist[j * n + i] : m_hist[i * n + j]; } - inline void inc_hist(int i, int j, int n) { if ((i != j) && (i < j) && (i != -1) && (j != -1)) { assert(((uint32_t)i < (uint32_t)n) && ((uint32_t)j < (uint32_t)n)); m_hist[i * n + j]++; } } - - void prepare_hist(uint32_t num_syms, uint32_t num_indices, const uint32_t *pIndices); - void find_initial(uint32_t num_syms); - void find_next_entry(uint32_t &best_entry, double &best_count, pEntry_dist_func pDist_func, void *pCtx, float dist_func_weight); - float pick_side(uint32_t num_syms, uint32_t entry_to_move, pEntry_dist_func pDist_func, void *pCtx, float dist_func_weight); - }; - - // Simple 32-bit 2D image class - - class image - { - public: - image() : - m_width(0), m_height(0), m_pitch(0) - { - } - - image(uint32_t w, uint32_t h, uint32_t p = UINT32_MAX) : - m_width(0), m_height(0), m_pitch(0) - { - resize(w, h, p); - } - - image(const uint8_t *pImage, uint32_t width, uint32_t height, uint32_t comps) : - m_width(0), m_height(0), m_pitch(0) - { - init(pImage, width, height, comps); - } - - image(const image &other) : - m_width(0), m_height(0), m_pitch(0) - { - *this = other; - } - - image &swap(image &other) - { - std::swap(m_width, other.m_width); - std::swap(m_height, other.m_height); - std::swap(m_pitch, other.m_pitch); - m_pixels.swap(other.m_pixels); - return *this; - } - - image &operator= (const image &rhs) - { - if (this != &rhs) - { - m_width = rhs.m_width; - m_height = rhs.m_height; - m_pitch = rhs.m_pitch; - m_pixels = rhs.m_pixels; - } - return *this; - } - - image &clear() - { - m_width = 0; - m_height = 0; - m_pitch = 0; - clear_vector(m_pixels); - return *this; - } - - image &resize(uint32_t w, uint32_t h, uint32_t p = UINT32_MAX, const color_rgba& background = g_black_color) - { - return crop(w, h, p, background); - } - - image &set_all(const color_rgba &c) - { - for (uint32_t i = 0; i < m_pixels.size(); i++) - m_pixels[i] = c; - return *this; - } - - void init(const uint8_t *pImage, uint32_t width, uint32_t height, uint32_t comps) - { - assert(comps >= 1 && comps <= 4); - - resize(width, height); - - for (uint32_t y = 0; y < height; y++) - { - for (uint32_t x = 0; x < width; x++) - { - const uint8_t *pSrc = &pImage[(x + y * width) * comps]; - color_rgba &dst = (*this)(x, y); - - if (comps == 1) - { - dst.r = pSrc[0]; - dst.g = pSrc[0]; - dst.b = pSrc[0]; - dst.a = 255; - } - else if (comps == 2) - { - dst.r = pSrc[0]; - dst.g = pSrc[0]; - dst.b = pSrc[0]; - dst.a = pSrc[1]; - } - else - { - dst.r = pSrc[0]; - dst.g = pSrc[1]; - dst.b = pSrc[2]; - if (comps == 4) - dst.a = pSrc[3]; - else - dst.a = 255; - } - } - } - } - - image &fill_box(uint32_t x, uint32_t y, uint32_t w, uint32_t h, const color_rgba &c) - { - for (uint32_t iy = 0; iy < h; iy++) - for (uint32_t ix = 0; ix < w; ix++) - set_clipped(x + ix, y + iy, c); - return *this; - } - - image& fill_box_alpha(uint32_t x, uint32_t y, uint32_t w, uint32_t h, const color_rgba& c) - { - for (uint32_t iy = 0; iy < h; iy++) - for (uint32_t ix = 0; ix < w; ix++) - set_clipped_alpha(x + ix, y + iy, c); - return *this; - } - - image &crop_dup_borders(uint32_t w, uint32_t h) - { - const uint32_t orig_w = m_width, orig_h = m_height; - - crop(w, h); - - if (orig_w && orig_h) - { - if (m_width > orig_w) - { - for (uint32_t x = orig_w; x < m_width; x++) - for (uint32_t y = 0; y < m_height; y++) - set_clipped(x, y, get_clamped(minimum(x, orig_w - 1U), minimum(y, orig_h - 1U))); - } - - if (m_height > orig_h) - { - for (uint32_t y = orig_h; y < m_height; y++) - for (uint32_t x = 0; x < m_width; x++) - set_clipped(x, y, get_clamped(minimum(x, orig_w - 1U), minimum(y, orig_h - 1U))); - } - } - return *this; - } - - // pPixels MUST have been allocated using malloc() (basisu::vector will eventually use free() on the pointer). - image& grant_ownership(color_rgba* pPixels, uint32_t w, uint32_t h, uint32_t p = UINT32_MAX) - { - if (p == UINT32_MAX) - p = w; - - clear(); - - if ((!p) || (!w) || (!h)) - return *this; - - m_pixels.grant_ownership(pPixels, p * h, p * h); - - m_width = w; - m_height = h; - m_pitch = p; - - return *this; - } - - image &crop(uint32_t w, uint32_t h, uint32_t p = UINT32_MAX, const color_rgba &background = g_black_color, bool init_image = true) - { - if (p == UINT32_MAX) - p = w; - - if ((w == m_width) && (m_height == h) && (m_pitch == p)) - return *this; - - if ((!w) || (!h) || (!p)) - { - clear(); - return *this; - } - - color_rgba_vec cur_state; - cur_state.swap(m_pixels); - - m_pixels.resize(p * h); - - if (init_image) - { - if (m_width || m_height) - { - for (uint32_t y = 0; y < h; y++) - { - for (uint32_t x = 0; x < w; x++) - { - if ((x < m_width) && (y < m_height)) - m_pixels[x + y * p] = cur_state[x + y * m_pitch]; - else - m_pixels[x + y * p] = background; - } - } - } - else - { - m_pixels.set_all(background); - } - } - - m_width = w; - m_height = h; - m_pitch = p; - - return *this; - } - - inline const color_rgba &operator() (uint32_t x, uint32_t y) const { assert(x < m_width && y < m_height); return m_pixels[x + y * m_pitch]; } - inline color_rgba &operator() (uint32_t x, uint32_t y) { assert(x < m_width && y < m_height); return m_pixels[x + y * m_pitch]; } - - inline const color_rgba &get_clamped(int x, int y) const { return (*this)(clamp(x, 0, m_width - 1), clamp(y, 0, m_height - 1)); } - inline color_rgba &get_clamped(int x, int y) { return (*this)(clamp(x, 0, m_width - 1), clamp(y, 0, m_height - 1)); } - - inline const color_rgba &get_clamped_or_wrapped(int x, int y, bool wrap_u, bool wrap_v) const - { - x = wrap_u ? posmod(x, m_width) : clamp(x, 0, m_width - 1); - y = wrap_v ? posmod(y, m_height) : clamp(y, 0, m_height - 1); - return m_pixels[x + y * m_pitch]; - } - - inline color_rgba &get_clamped_or_wrapped(int x, int y, bool wrap_u, bool wrap_v) - { - x = wrap_u ? posmod(x, m_width) : clamp(x, 0, m_width - 1); - y = wrap_v ? posmod(y, m_height) : clamp(y, 0, m_height - 1); - return m_pixels[x + y * m_pitch]; - } - - inline image &set_clipped(int x, int y, const color_rgba &c) - { - if ((static_cast(x) < m_width) && (static_cast(y) < m_height)) - (*this)(x, y) = c; - return *this; - } - - inline image& set_clipped_alpha(int x, int y, const color_rgba& c) - { - if ((static_cast(x) < m_width) && (static_cast(y) < m_height)) - (*this)(x, y).m_comps[3] = c.m_comps[3]; - return *this; - } - - // Very straightforward blit with full clipping. Not fast, but it works. - image &blit(const image &src, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y) - { - for (int y = 0; y < src_h; y++) - { - const int sy = src_y + y; - if (sy < 0) - continue; - else if (sy >= (int)src.get_height()) - break; - - for (int x = 0; x < src_w; x++) - { - const int sx = src_x + x; - if (sx < 0) - continue; - else if (sx >= (int)src.get_height()) - break; - - set_clipped(dst_x + x, dst_y + y, src(sx, sy)); - } - } - - return *this; - } - - const image &extract_block_clamped(color_rgba *pDst, uint32_t src_x, uint32_t src_y, uint32_t w, uint32_t h) const - { - if (((src_x + w) > m_width) || ((src_y + h) > m_height)) - { - // Slower clamping case - for (uint32_t y = 0; y < h; y++) - for (uint32_t x = 0; x < w; x++) - *pDst++ = get_clamped(src_x + x, src_y + y); - } - else - { - const color_rgba* pSrc = &m_pixels[src_x + src_y * m_pitch]; - - for (uint32_t y = 0; y < h; y++) - { - memcpy(pDst, pSrc, w * sizeof(color_rgba)); - pSrc += m_pitch; - pDst += w; - } - } - - return *this; - } - - image &set_block_clipped(const color_rgba *pSrc, uint32_t dst_x, uint32_t dst_y, uint32_t w, uint32_t h) - { - for (uint32_t y = 0; y < h; y++) - for (uint32_t x = 0; x < w; x++) - set_clipped(dst_x + x, dst_y + y, *pSrc++); - return *this; - } - - inline uint32_t get_width() const { return m_width; } - inline uint32_t get_height() const { return m_height; } - inline uint32_t get_pitch() const { return m_pitch; } - inline uint32_t get_total_pixels() const { return m_width * m_height; } - - inline uint32_t get_block_width(uint32_t w) const { return (m_width + (w - 1)) / w; } - inline uint32_t get_block_height(uint32_t h) const { return (m_height + (h - 1)) / h; } - inline uint32_t get_total_blocks(uint32_t w, uint32_t h) const { return get_block_width(w) * get_block_height(h); } - - inline const color_rgba_vec &get_pixels() const { return m_pixels; } - inline color_rgba_vec &get_pixels() { return m_pixels; } - - inline const color_rgba *get_ptr() const { return &m_pixels[0]; } - inline color_rgba *get_ptr() { return &m_pixels[0]; } - - bool has_alpha() const - { - for (uint32_t y = 0; y < m_height; ++y) - for (uint32_t x = 0; x < m_width; ++x) - if ((*this)(x, y).a < 255) - return true; - - return false; - } - - image &set_alpha(uint8_t a) - { - for (uint32_t y = 0; y < m_height; ++y) - for (uint32_t x = 0; x < m_width; ++x) - (*this)(x, y).a = a; - return *this; - } - - image &flip_y() - { - for (uint32_t y = 0; y < m_height / 2; ++y) - for (uint32_t x = 0; x < m_width; ++x) - std::swap((*this)(x, y), (*this)(x, m_height - 1 - y)); - return *this; - } - - // TODO: There are many ways to do this, not sure this is the best way. - image &renormalize_normal_map() - { - for (uint32_t y = 0; y < m_height; y++) - { - for (uint32_t x = 0; x < m_width; x++) - { - color_rgba &c = (*this)(x, y); - if ((c.r == 128) && (c.g == 128) && (c.b == 128)) - continue; - - vec3F v(c.r, c.g, c.b); - v = (v * (2.0f / 255.0f)) - vec3F(1.0f); - v.clamp(-1.0f, 1.0f); - - float length = v.length(); - const float cValidThresh = .077f; - if (length < cValidThresh) - { - c.set(128, 128, 128, c.a); - } - else if (fabs(length - 1.0f) > cValidThresh) - { - if (length) - v /= length; - - for (uint32_t i = 0; i < 3; i++) - c[i] = static_cast(clamp(floor((v[i] + 1.0f) * 255.0f * .5f + .5f), 0.0f, 255.0f)); - - if ((c.g == 128) && (c.r == 128)) - { - if (c.b < 128) - c.b = 0; - else - c.b = 255; - } - } - } - } - return *this; - } - - void debug_text(uint32_t x_ofs, uint32_t y_ofs, uint32_t x_scale, uint32_t y_scale, const color_rgba &fg, const color_rgba *pBG, bool alpha_only, const char* p, ...); - - private: - uint32_t m_width, m_height, m_pitch; // all in pixels - color_rgba_vec m_pixels; - }; - - // Float images - - typedef basisu::vector vec4F_vec; - - class imagef - { - public: - imagef() : - m_width(0), m_height(0), m_pitch(0) - { - } - - imagef(uint32_t w, uint32_t h, uint32_t p = UINT32_MAX) : - m_width(0), m_height(0), m_pitch(0) - { - resize(w, h, p); - } - - imagef(const imagef &other) : - m_width(0), m_height(0), m_pitch(0) - { - *this = other; - } - - imagef &swap(imagef &other) - { - std::swap(m_width, other.m_width); - std::swap(m_height, other.m_height); - std::swap(m_pitch, other.m_pitch); - m_pixels.swap(other.m_pixels); - return *this; - } - - imagef &operator= (const imagef &rhs) - { - if (this != &rhs) - { - m_width = rhs.m_width; - m_height = rhs.m_height; - m_pitch = rhs.m_pitch; - m_pixels = rhs.m_pixels; - } - return *this; - } - - imagef &clear() - { - m_width = 0; - m_height = 0; - m_pitch = 0; - clear_vector(m_pixels); - return *this; - } - - imagef &set(const image &src, const vec4F &scale = vec4F(1), const vec4F &bias = vec4F(0)) - { - const uint32_t width = src.get_width(); - const uint32_t height = src.get_height(); - - resize(width, height); - - for (int y = 0; y < (int)height; y++) - { - for (uint32_t x = 0; x < width; x++) - { - const color_rgba &src_pixel = src(x, y); - (*this)(x, y).set((float)src_pixel.r * scale[0] + bias[0], (float)src_pixel.g * scale[1] + bias[1], (float)src_pixel.b * scale[2] + bias[2], (float)src_pixel.a * scale[3] + bias[3]); - } - } - - return *this; - } - - imagef &resize(const imagef &other, uint32_t p = UINT32_MAX, const vec4F& background = vec4F(0,0,0,1)) - { - return resize(other.get_width(), other.get_height(), p, background); - } - - imagef &resize(uint32_t w, uint32_t h, uint32_t p = UINT32_MAX, const vec4F& background = vec4F(0,0,0,1)) - { - return crop(w, h, p, background); - } - - imagef &set_all(const vec4F &c) - { - for (uint32_t i = 0; i < m_pixels.size(); i++) - m_pixels[i] = c; - return *this; - } - - imagef &fill_box(uint32_t x, uint32_t y, uint32_t w, uint32_t h, const vec4F &c) - { - for (uint32_t iy = 0; iy < h; iy++) - for (uint32_t ix = 0; ix < w; ix++) - set_clipped(x + ix, y + iy, c); - return *this; - } - - imagef &crop(uint32_t w, uint32_t h, uint32_t p = UINT32_MAX, const vec4F &background = vec4F(0,0,0,1)) - { - if (p == UINT32_MAX) - p = w; - - if ((w == m_width) && (m_height == h) && (m_pitch == p)) - return *this; - - if ((!w) || (!h) || (!p)) - { - clear(); - return *this; - } - - vec4F_vec cur_state; - cur_state.swap(m_pixels); - - m_pixels.resize(p * h); - - for (uint32_t y = 0; y < h; y++) - { - for (uint32_t x = 0; x < w; x++) - { - if ((x < m_width) && (y < m_height)) - m_pixels[x + y * p] = cur_state[x + y * m_pitch]; - else - m_pixels[x + y * p] = background; - } - } - - m_width = w; - m_height = h; - m_pitch = p; - - return *this; - } - - inline const vec4F &operator() (uint32_t x, uint32_t y) const { assert(x < m_width && y < m_height); return m_pixels[x + y * m_pitch]; } - inline vec4F &operator() (uint32_t x, uint32_t y) { assert(x < m_width && y < m_height); return m_pixels[x + y * m_pitch]; } - - inline const vec4F &get_clamped(int x, int y) const { return (*this)(clamp(x, 0, m_width - 1), clamp(y, 0, m_height - 1)); } - inline vec4F &get_clamped(int x, int y) { return (*this)(clamp(x, 0, m_width - 1), clamp(y, 0, m_height - 1)); } - - inline const vec4F &get_clamped_or_wrapped(int x, int y, bool wrap_u, bool wrap_v) const - { - x = wrap_u ? posmod(x, m_width) : clamp(x, 0, m_width - 1); - y = wrap_v ? posmod(y, m_height) : clamp(y, 0, m_height - 1); - return m_pixels[x + y * m_pitch]; - } - - inline vec4F &get_clamped_or_wrapped(int x, int y, bool wrap_u, bool wrap_v) - { - x = wrap_u ? posmod(x, m_width) : clamp(x, 0, m_width - 1); - y = wrap_v ? posmod(y, m_height) : clamp(y, 0, m_height - 1); - return m_pixels[x + y * m_pitch]; - } - - inline imagef &set_clipped(int x, int y, const vec4F &c) - { - if ((static_cast(x) < m_width) && (static_cast(y) < m_height)) - (*this)(x, y) = c; - return *this; - } - - // Very straightforward blit with full clipping. Not fast, but it works. - imagef &blit(const imagef &src, int src_x, int src_y, int src_w, int src_h, int dst_x, int dst_y) - { - for (int y = 0; y < src_h; y++) - { - const int sy = src_y + y; - if (sy < 0) - continue; - else if (sy >= (int)src.get_height()) - break; - - for (int x = 0; x < src_w; x++) - { - const int sx = src_x + x; - if (sx < 0) - continue; - else if (sx >= (int)src.get_height()) - break; - - set_clipped(dst_x + x, dst_y + y, src(sx, sy)); - } - } - - return *this; - } - - const imagef &extract_block_clamped(vec4F *pDst, uint32_t src_x, uint32_t src_y, uint32_t w, uint32_t h) const - { - for (uint32_t y = 0; y < h; y++) - for (uint32_t x = 0; x < w; x++) - *pDst++ = get_clamped(src_x + x, src_y + y); - return *this; - } - - imagef &set_block_clipped(const vec4F *pSrc, uint32_t dst_x, uint32_t dst_y, uint32_t w, uint32_t h) - { - for (uint32_t y = 0; y < h; y++) - for (uint32_t x = 0; x < w; x++) - set_clipped(dst_x + x, dst_y + y, *pSrc++); - return *this; - } - - inline uint32_t get_width() const { return m_width; } - inline uint32_t get_height() const { return m_height; } - inline uint32_t get_pitch() const { return m_pitch; } - inline uint32_t get_total_pixels() const { return m_width * m_height; } - - inline uint32_t get_block_width(uint32_t w) const { return (m_width + (w - 1)) / w; } - inline uint32_t get_block_height(uint32_t h) const { return (m_height + (h - 1)) / h; } - inline uint32_t get_total_blocks(uint32_t w, uint32_t h) const { return get_block_width(w) * get_block_height(h); } - - inline const vec4F_vec &get_pixels() const { return m_pixels; } - inline vec4F_vec &get_pixels() { return m_pixels; } - - inline const vec4F *get_ptr() const { return &m_pixels[0]; } - inline vec4F *get_ptr() { return &m_pixels[0]; } - - private: - uint32_t m_width, m_height, m_pitch; // all in pixels - vec4F_vec m_pixels; - }; - - // Image metrics - - class image_metrics - { - public: - // TODO: Add ssim - float m_max, m_mean, m_mean_squared, m_rms, m_psnr, m_ssim; - - image_metrics() - { - clear(); - } - - void clear() - { - m_max = 0; - m_mean = 0; - m_mean_squared = 0; - m_rms = 0; - m_psnr = 0; - m_ssim = 0; - } - - void print(const char *pPrefix = nullptr) { printf("%sMax: %3.0f Mean: %3.3f RMS: %3.3f PSNR: %2.3f dB\n", pPrefix ? pPrefix : "", m_max, m_mean, m_rms, m_psnr); } - - void calc(const image &a, const image &b, uint32_t first_chan = 0, uint32_t total_chans = 0, bool avg_comp_error = true, bool use_601_luma = false); - }; - - // Image saving/loading/resampling - - bool load_png(const uint8_t* pBuf, size_t buf_size, image& img, const char* pFilename = nullptr); - bool load_png(const char* pFilename, image& img); - inline bool load_png(const std::string &filename, image &img) { return load_png(filename.c_str(), img); } - - bool load_tga(const char* pFilename, image& img); - inline bool load_tga(const std::string &filename, image &img) { return load_tga(filename.c_str(), img); } - - bool load_jpg(const char *pFilename, image& img); - inline bool load_jpg(const std::string &filename, image &img) { return load_jpg(filename.c_str(), img); } - - // Currently loads .PNG, .TGA, or .JPG - bool load_image(const char* pFilename, image& img); - inline bool load_image(const std::string &filename, image &img) { return load_image(filename.c_str(), img); } - - uint8_t *read_tga(const uint8_t *pBuf, uint32_t buf_size, int &width, int &height, int &n_chans); - uint8_t *read_tga(const char *pFilename, int &width, int &height, int &n_chans); - - enum - { - cImageSaveGrayscale = 1, - cImageSaveIgnoreAlpha = 2 - }; - - bool save_png(const char* pFilename, const image& img, uint32_t image_save_flags = 0, uint32_t grayscale_comp = 0); - inline bool save_png(const std::string &filename, const image &img, uint32_t image_save_flags = 0, uint32_t grayscale_comp = 0) { return save_png(filename.c_str(), img, image_save_flags, grayscale_comp); } - - bool read_file_to_vec(const char* pFilename, uint8_vec& data); - - bool write_data_to_file(const char* pFilename, const void* pData, size_t len); - - inline bool write_vec_to_file(const char* pFilename, const uint8_vec& v) { return v.size() ? write_data_to_file(pFilename, &v[0], v.size()) : write_data_to_file(pFilename, "", 0); } - - float linear_to_srgb(float l); - float srgb_to_linear(float s); - - bool image_resample(const image &src, image &dst, bool srgb = false, - const char *pFilter = "lanczos4", float filter_scale = 1.0f, - bool wrapping = false, - uint32_t first_comp = 0, uint32_t num_comps = 4); - - // Timing - - typedef uint64_t timer_ticks; - - class interval_timer - { - public: - interval_timer(); - - void start(); - void stop(); - - double get_elapsed_secs() const; - inline double get_elapsed_ms() const { return 1000.0f* get_elapsed_secs(); } - - static void init(); - static inline timer_ticks get_ticks_per_sec() { return g_freq; } - static timer_ticks get_ticks(); - static double ticks_to_secs(timer_ticks ticks); - static inline double ticks_to_ms(timer_ticks ticks) { return ticks_to_secs(ticks) * 1000.0f; } - - private: - static timer_ticks g_init_ticks, g_freq; - static double g_timer_freq; - - timer_ticks m_start_time, m_stop_time; - - bool m_started, m_stopped; - }; - - // 2D array - - template - class vector2D - { - typedef basisu::vector TVec; - - uint32_t m_width, m_height; - TVec m_values; - - public: - vector2D() : - m_width(0), - m_height(0) - { - } - - vector2D(uint32_t w, uint32_t h) : - m_width(0), - m_height(0) - { - resize(w, h); - } - - vector2D(const vector2D &other) - { - *this = other; - } - - vector2D &operator= (const vector2D &other) - { - if (this != &other) - { - m_width = other.m_width; - m_height = other.m_height; - m_values = other.m_values; - } - return *this; - } - - inline bool operator== (const vector2D &rhs) const - { - return (m_width == rhs.m_width) && (m_height == rhs.m_height) && (m_values == rhs.m_values); - } - - inline uint32_t size_in_bytes() const { return (uint32_t)m_values.size() * sizeof(m_values[0]); } - - inline const T &operator() (uint32_t x, uint32_t y) const { assert(x < m_width && y < m_height); return m_values[x + y * m_width]; } - inline T &operator() (uint32_t x, uint32_t y) { assert(x < m_width && y < m_height); return m_values[x + y * m_width]; } - - inline const T &operator[] (uint32_t i) const { return m_values[i]; } - inline T &operator[] (uint32_t i) { return m_values[i]; } - - inline const T &at_clamped(int x, int y) const { return (*this)(clamp(x, 0, m_width), clamp(y, 0, m_height)); } - inline T &at_clamped(int x, int y) { return (*this)(clamp(x, 0, m_width), clamp(y, 0, m_height)); } - - void clear() - { - m_width = 0; - m_height = 0; - m_values.clear(); - } - - void set_all(const T&val) - { - vector_set_all(m_values, val); - } - - inline const T* get_ptr() const { return &m_values[0]; } - inline T* get_ptr() { return &m_values[0]; } - - vector2D &resize(uint32_t new_width, uint32_t new_height) - { - if ((m_width == new_width) && (m_height == new_height)) - return *this; - - TVec oldVals(new_width * new_height); - oldVals.swap(m_values); - - const uint32_t w = minimum(m_width, new_width); - const uint32_t h = minimum(m_height, new_height); - - if ((w) && (h)) - { - for (uint32_t y = 0; y < h; y++) - for (uint32_t x = 0; x < w; x++) - m_values[x + y * new_width] = oldVals[x + y * m_width]; - } - - m_width = new_width; - m_height = new_height; - - return *this; - } - }; - - inline FILE *fopen_safe(const char *pFilename, const char *pMode) - { -#ifdef _WIN32 - FILE *pFile = nullptr; - fopen_s(&pFile, pFilename, pMode); - return pFile; -#else - return fopen(pFilename, pMode); -#endif - } - - void fill_buffer_with_random_bytes(void *pBuf, size_t size, uint32_t seed = 1); - - const uint32_t cPixelBlockWidth = 4; - const uint32_t cPixelBlockHeight = 4; - const uint32_t cPixelBlockTotalPixels = cPixelBlockWidth * cPixelBlockHeight; - - struct pixel_block - { - color_rgba m_pixels[cPixelBlockHeight][cPixelBlockWidth]; // [y][x] - - inline const color_rgba& operator() (uint32_t x, uint32_t y) const { assert((x < cPixelBlockWidth) && (y < cPixelBlockHeight)); return m_pixels[y][x]; } - inline color_rgba& operator() (uint32_t x, uint32_t y) { assert((x < cPixelBlockWidth) && (y < cPixelBlockHeight)); return m_pixels[y][x]; } - - inline const color_rgba* get_ptr() const { return &m_pixels[0][0]; } - inline color_rgba* get_ptr() { return &m_pixels[0][0]; } - - inline void clear() { clear_obj(*this); } - - inline bool operator== (const pixel_block& rhs) const - { - return memcmp(m_pixels, rhs.m_pixels, sizeof(m_pixels)) == 0; - } - }; - typedef basisu::vector pixel_block_vec; - -} // namespace basisu - - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_etc.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_etc.cpp deleted file mode 100644 index f8bd0f12e..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_etc.cpp +++ /dev/null @@ -1,1610 +0,0 @@ -// basis_etc.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_etc.h" - -#if BASISU_SUPPORT_SSE -#define CPPSPMD_NAME(a) a##_sse41 -#include "basisu_kernels_declares.h" -#endif - -#define BASISU_DEBUG_ETC_ENCODER 0 -#define BASISU_DEBUG_ETC_ENCODER_DEEPER 0 - -namespace basisu -{ - const int8_t g_etc2_eac_tables[16][8] = - { - { -3, -6, -9, -15, 2, 5, 8, 14 }, { -3, -7, -10, -13, 2, 6, 9, 12 }, { -2, -5, -8, -13, 1, 4, 7, 12 }, { -2, -4, -6, -13, 1, 3, 5, 12 }, - { -3, -6, -8, -12, 2, 5, 7, 11 }, { -3, -7, -9, -11, 2, 6, 8, 10 }, { -4, -7, -8, -11, 3, 6, 7, 10 }, { -3, -5, -8, -11, 2, 4, 7, 10 }, - { -2, -6, -8, -10, 1, 5, 7, 9 }, { -2, -5, -8, -10, 1, 4, 7, 9 }, { -2, -4, -8, -10, 1, 3, 7, 9 }, { -2, -5, -7, -10, 1, 4, 6, 9 }, - { -3, -4, -7, -10, 2, 3, 6, 9 }, { -1, -2, -3, -10, 0, 1, 2, 9 }, { -4, -6, -8, -9, 3, 5, 7, 8 }, { -3, -5, -7, -9, 2, 4, 6, 8 } - }; - - const int8_t g_etc2_eac_tables8[16][8] = - { - { -24, -48, -72, -120, 16, 40, 64, 112 }, { -24,-56,-80,-104,16,48,72,96 }, { -16,-40,-64,-104,8,32,56,96 }, { -16,-32,-48,-104,8,24,40,96 }, - { -24,-48,-64,-96,16,40,56,88 }, { -24,-56,-72,-88,16,48,64,80 }, { -32,-56,-64,-88,24,48,56,80 }, { -24,-40,-64,-88,16,32,56,80 }, - { -16,-48,-64,-80,8,40,56,72 }, { -16,-40,-64,-80,8,32,56,72 }, { -16,-32,-64,-80,8,24,56,72 }, { -16,-40,-56,-80,8,32,48,72 }, - { -24,-32,-56,-80,16,24,48,72 }, { -8,-16,-24,-80,0,8,16,72 }, { -32,-48,-64,-72,24,40,56,64 }, { -24,-40,-56,-72,16,32,48,64 } - }; - - // Given an ETC1 diff/inten_table/selector, and an 8-bit desired color, this table encodes the best packed_color in the low byte, and the abs error in the high byte. - static uint16_t g_etc1_inverse_lookup[2 * 8 * 4][256]; // [ diff/inten_table/selector][desired_color ] - - // g_color8_to_etc_block_config[color][table_index] = Supplies for each 8-bit color value a list of packed ETC1 diff/intensity table/selectors/packed_colors that map to that color. - // To pack: diff | (inten << 1) | (selector << 4) | (packed_c << 8) - static const uint16_t g_etc1_color8_to_etc_block_config_0_255[2][33] = - { - { 0x0000, 0x0010, 0x0002, 0x0012, 0x0004, 0x0014, 0x0006, 0x0016, 0x0008, 0x0018, 0x000A, 0x001A, 0x000C, 0x001C, 0x000E, 0x001E, 0x0001, 0x0011, 0x0003, 0x0013, 0x0005, 0x0015, 0x0007, 0x0017, 0x0009, 0x0019, 0x000B, 0x001B, 0x000D, 0x001D, 0x000F, 0x001F, 0xFFFF }, - { 0x0F20, 0x0F30, 0x0E32, 0x0F22, 0x0E34, 0x0F24, 0x0D36, 0x0F26, 0x0C38, 0x0E28, 0x0B3A, 0x0E2A, 0x093C, 0x0E2C, 0x053E, 0x0D2E, 0x1E31, 0x1F21, 0x1D33, 0x1F23, 0x1C35, 0x1E25, 0x1A37, 0x1E27, 0x1839, 0x1D29, 0x163B, 0x1C2B, 0x133D, 0x1B2D, 0x093F, 0x1A2F, 0xFFFF }, - }; - - // Really only [254][11]. - static const uint16_t g_etc1_color8_to_etc_block_config_1_to_254[254][12] = - { - { 0x021C, 0x0D0D, 0xFFFF }, { 0x0020, 0x0021, 0x0A0B, 0x061F, 0xFFFF }, { 0x0113, 0x0217, 0xFFFF }, { 0x0116, 0x031E, 0x0B0E, 0x0405, 0xFFFF }, { 0x0022, 0x0204, 0x050A, 0x0023, 0xFFFF }, { 0x0111, 0x0319, 0x0809, 0x170F, 0xFFFF }, { - 0x0303, 0x0215, 0x0607, 0xFFFF }, { 0x0030, 0x0114, 0x0408, 0x0031, 0x0201, 0x051D, 0xFFFF }, { 0x0100, 0x0024, 0x0306, 0x0025, 0x041B, 0x0E0D, 0xFFFF }, { 0x021A, 0x0121, 0x0B0B, 0x071F, 0xFFFF }, { 0x0213, 0x0317, 0xFFFF }, { 0x0112, - 0x0505, 0xFFFF }, { 0x0026, 0x070C, 0x0123, 0x0027, 0xFFFF }, { 0x0211, 0x0909, 0xFFFF }, { 0x0110, 0x0315, 0x0707, 0x0419, 0x180F, 0xFFFF }, { 0x0218, 0x0131, 0x0301, 0x0403, 0x061D, 0xFFFF }, { 0x0032, 0x0202, 0x0033, 0x0125, 0x051B, - 0x0F0D, 0xFFFF }, { 0x0028, 0x031C, 0x0221, 0x0029, 0xFFFF }, { 0x0120, 0x0313, 0x0C0B, 0x081F, 0xFFFF }, { 0x0605, 0x0417, 0xFFFF }, { 0x0216, 0x041E, 0x0C0E, 0x0223, 0x0127, 0xFFFF }, { 0x0122, 0x0304, 0x060A, 0x0311, 0x0A09, 0xFFFF - }, { 0x0519, 0x190F, 0xFFFF }, { 0x002A, 0x0231, 0x0503, 0x0415, 0x0807, 0x002B, 0x071D, 0xFFFF }, { 0x0130, 0x0214, 0x0508, 0x0401, 0x0133, 0x0225, 0x061B, 0xFFFF }, { 0x0200, 0x0124, 0x0406, 0x0321, 0x0129, 0x100D, 0xFFFF }, { 0x031A, - 0x0D0B, 0x091F, 0xFFFF }, { 0x0413, 0x0705, 0x0517, 0xFFFF }, { 0x0212, 0x0034, 0x0323, 0x0035, 0x0227, 0xFFFF }, { 0x0126, 0x080C, 0x0B09, 0xFFFF }, { 0x0411, 0x0619, 0x1A0F, 0xFFFF }, { 0x0210, 0x0331, 0x0603, 0x0515, 0x0907, 0x012B, - 0xFFFF }, { 0x0318, 0x002C, 0x0501, 0x0233, 0x0325, 0x071B, 0x002D, 0x081D, 0xFFFF }, { 0x0132, 0x0302, 0x0229, 0x110D, 0xFFFF }, { 0x0128, 0x041C, 0x0421, 0x0E0B, 0x0A1F, 0xFFFF }, { 0x0220, 0x0513, 0x0617, 0xFFFF }, { 0x0135, 0x0805, - 0x0327, 0xFFFF }, { 0x0316, 0x051E, 0x0D0E, 0x0423, 0xFFFF }, { 0x0222, 0x0404, 0x070A, 0x0511, 0x0719, 0x0C09, 0x1B0F, 0xFFFF }, { 0x0703, 0x0615, 0x0A07, 0x022B, 0xFFFF }, { 0x012A, 0x0431, 0x0601, 0x0333, 0x012D, 0x091D, 0xFFFF }, { - 0x0230, 0x0314, 0x0036, 0x0608, 0x0425, 0x0037, 0x0329, 0x081B, 0x120D, 0xFFFF }, { 0x0300, 0x0224, 0x0506, 0x0521, 0x0F0B, 0x0B1F, 0xFFFF }, { 0x041A, 0x0613, 0x0717, 0xFFFF }, { 0x0235, 0x0905, 0xFFFF }, { 0x0312, 0x0134, 0x0523, - 0x0427, 0xFFFF }, { 0x0226, 0x090C, 0x002E, 0x0611, 0x0D09, 0x002F, 0xFFFF }, { 0x0715, 0x0B07, 0x0819, 0x032B, 0x1C0F, 0xFFFF }, { 0x0310, 0x0531, 0x0701, 0x0803, 0x022D, 0x0A1D, 0xFFFF }, { 0x0418, 0x012C, 0x0433, 0x0525, 0x0137, 0x091B, - 0x130D, 0xFFFF }, { 0x0232, 0x0402, 0x0621, 0x0429, 0xFFFF }, { 0x0228, 0x051C, 0x0713, 0x100B, 0x0C1F, 0xFFFF }, { 0x0320, 0x0335, 0x0A05, 0x0817, 0xFFFF }, { 0x0623, 0x0527, 0xFFFF }, { 0x0416, 0x061E, 0x0E0E, 0x0711, 0x0E09, 0x012F, - 0xFFFF }, { 0x0322, 0x0504, 0x080A, 0x0919, 0x1D0F, 0xFFFF }, { 0x0631, 0x0903, 0x0815, 0x0C07, 0x042B, 0x032D, 0x0B1D, 0xFFFF }, { 0x022A, 0x0801, 0x0533, 0x0625, 0x0237, 0x0A1B, 0xFFFF }, { 0x0330, 0x0414, 0x0136, 0x0708, 0x0721, 0x0529, - 0x140D, 0xFFFF }, { 0x0400, 0x0324, 0x0606, 0x0038, 0x0039, 0x110B, 0x0D1F, 0xFFFF }, { 0x051A, 0x0813, 0x0B05, 0x0917, 0xFFFF }, { 0x0723, 0x0435, 0x0627, 0xFFFF }, { 0x0412, 0x0234, 0x0F09, 0x022F, 0xFFFF }, { 0x0326, 0x0A0C, 0x012E, - 0x0811, 0x0A19, 0x1E0F, 0xFFFF }, { 0x0731, 0x0A03, 0x0915, 0x0D07, 0x052B, 0xFFFF }, { 0x0410, 0x0901, 0x0633, 0x0725, 0x0337, 0x0B1B, 0x042D, 0x0C1D, 0xFFFF }, { 0x0518, 0x022C, 0x0629, 0x150D, 0xFFFF }, { 0x0332, 0x0502, 0x0821, 0x0139, - 0x120B, 0x0E1F, 0xFFFF }, { 0x0328, 0x061C, 0x0913, 0x0A17, 0xFFFF }, { 0x0420, 0x0535, 0x0C05, 0x0727, 0xFFFF }, { 0x0823, 0x032F, 0xFFFF }, { 0x0516, 0x071E, 0x0F0E, 0x0911, 0x0B19, 0x1009, 0x1F0F, 0xFFFF }, { 0x0422, 0x0604, 0x090A, - 0x0B03, 0x0A15, 0x0E07, 0x062B, 0xFFFF }, { 0x0831, 0x0A01, 0x0733, 0x052D, 0x0D1D, 0xFFFF }, { 0x032A, 0x0825, 0x0437, 0x0729, 0x0C1B, 0x160D, 0xFFFF }, { 0x0430, 0x0514, 0x0236, 0x0808, 0x0921, 0x0239, 0x130B, 0x0F1F, 0xFFFF }, { 0x0500, - 0x0424, 0x0706, 0x0138, 0x0A13, 0x0B17, 0xFFFF }, { 0x061A, 0x0635, 0x0D05, 0xFFFF }, { 0x0923, 0x0827, 0xFFFF }, { 0x0512, 0x0334, 0x003A, 0x0A11, 0x1109, 0x003B, 0x042F, 0xFFFF }, { 0x0426, 0x0B0C, 0x022E, 0x0B15, 0x0F07, 0x0C19, - 0x072B, 0xFFFF }, { 0x0931, 0x0B01, 0x0C03, 0x062D, 0x0E1D, 0xFFFF }, { 0x0510, 0x0833, 0x0925, 0x0537, 0x0D1B, 0x170D, 0xFFFF }, { 0x0618, 0x032C, 0x0A21, 0x0339, 0x0829, 0xFFFF }, { 0x0432, 0x0602, 0x0B13, 0x140B, 0x101F, 0xFFFF }, { - 0x0428, 0x071C, 0x0735, 0x0E05, 0x0C17, 0xFFFF }, { 0x0520, 0x0A23, 0x0927, 0xFFFF }, { 0x0B11, 0x1209, 0x013B, 0x052F, 0xFFFF }, { 0x0616, 0x081E, 0x0D19, 0xFFFF }, { 0x0522, 0x0704, 0x0A0A, 0x0A31, 0x0D03, 0x0C15, 0x1007, 0x082B, 0x072D, - 0x0F1D, 0xFFFF }, { 0x0C01, 0x0933, 0x0A25, 0x0637, 0x0E1B, 0xFFFF }, { 0x042A, 0x0B21, 0x0929, 0x180D, 0xFFFF }, { 0x0530, 0x0614, 0x0336, 0x0908, 0x0439, 0x150B, 0x111F, 0xFFFF }, { 0x0600, 0x0524, 0x0806, 0x0238, 0x0C13, 0x0F05, - 0x0D17, 0xFFFF }, { 0x071A, 0x0B23, 0x0835, 0x0A27, 0xFFFF }, { 0x1309, 0x023B, 0x062F, 0xFFFF }, { 0x0612, 0x0434, 0x013A, 0x0C11, 0x0E19, 0xFFFF }, { 0x0526, 0x0C0C, 0x032E, 0x0B31, 0x0E03, 0x0D15, 0x1107, 0x092B, 0xFFFF }, { 0x0D01, - 0x0A33, 0x0B25, 0x0737, 0x0F1B, 0x082D, 0x101D, 0xFFFF }, { 0x0610, 0x0A29, 0x190D, 0xFFFF }, { 0x0718, 0x042C, 0x0C21, 0x0539, 0x160B, 0x121F, 0xFFFF }, { 0x0532, 0x0702, 0x0D13, 0x0E17, 0xFFFF }, { 0x0528, 0x081C, 0x0935, 0x1005, 0x0B27, - 0xFFFF }, { 0x0620, 0x0C23, 0x033B, 0x072F, 0xFFFF }, { 0x0D11, 0x0F19, 0x1409, 0xFFFF }, { 0x0716, 0x003C, 0x091E, 0x0F03, 0x0E15, 0x1207, 0x0A2B, 0x003D, 0xFFFF }, { 0x0622, 0x0804, 0x0B0A, 0x0C31, 0x0E01, 0x0B33, 0x092D, 0x111D, - 0xFFFF }, { 0x0C25, 0x0837, 0x0B29, 0x101B, 0x1A0D, 0xFFFF }, { 0x052A, 0x0D21, 0x0639, 0x170B, 0x131F, 0xFFFF }, { 0x0630, 0x0714, 0x0436, 0x0A08, 0x0E13, 0x0F17, 0xFFFF }, { 0x0700, 0x0624, 0x0906, 0x0338, 0x0A35, 0x1105, 0xFFFF }, { - 0x081A, 0x0D23, 0x0C27, 0xFFFF }, { 0x0E11, 0x1509, 0x043B, 0x082F, 0xFFFF }, { 0x0712, 0x0534, 0x023A, 0x0F15, 0x1307, 0x1019, 0x0B2B, 0x013D, 0xFFFF }, { 0x0626, 0x0D0C, 0x042E, 0x0D31, 0x0F01, 0x1003, 0x0A2D, 0x121D, 0xFFFF }, { 0x0C33, - 0x0D25, 0x0937, 0x111B, 0x1B0D, 0xFFFF }, { 0x0710, 0x0E21, 0x0739, 0x0C29, 0xFFFF }, { 0x0818, 0x052C, 0x0F13, 0x180B, 0x141F, 0xFFFF }, { 0x0632, 0x0802, 0x0B35, 0x1205, 0x1017, 0xFFFF }, { 0x0628, 0x091C, 0x0E23, 0x0D27, 0xFFFF }, { - 0x0720, 0x0F11, 0x1609, 0x053B, 0x092F, 0xFFFF }, { 0x1119, 0x023D, 0xFFFF }, { 0x0816, 0x013C, 0x0A1E, 0x0E31, 0x1103, 0x1015, 0x1407, 0x0C2B, 0x0B2D, 0x131D, 0xFFFF }, { 0x0722, 0x0904, 0x0C0A, 0x1001, 0x0D33, 0x0E25, 0x0A37, 0x121B, - 0xFFFF }, { 0x0F21, 0x0D29, 0x1C0D, 0xFFFF }, { 0x062A, 0x0839, 0x190B, 0x151F, 0xFFFF }, { 0x0730, 0x0814, 0x0536, 0x0B08, 0x1013, 0x1305, 0x1117, 0xFFFF }, { 0x0800, 0x0724, 0x0A06, 0x0438, 0x0F23, 0x0C35, 0x0E27, 0xFFFF }, { 0x091A, - 0x1709, 0x063B, 0x0A2F, 0xFFFF }, { 0x1011, 0x1219, 0x033D, 0xFFFF }, { 0x0812, 0x0634, 0x033A, 0x0F31, 0x1203, 0x1115, 0x1507, 0x0D2B, 0xFFFF }, { 0x0726, 0x0E0C, 0x052E, 0x1101, 0x0E33, 0x0F25, 0x0B37, 0x131B, 0x0C2D, 0x141D, 0xFFFF }, { - 0x0E29, 0x1D0D, 0xFFFF }, { 0x0810, 0x1021, 0x0939, 0x1A0B, 0x161F, 0xFFFF }, { 0x0918, 0x062C, 0x1113, 0x1217, 0xFFFF }, { 0x0732, 0x0902, 0x0D35, 0x1405, 0x0F27, 0xFFFF }, { 0x0728, 0x0A1C, 0x1023, 0x073B, 0x0B2F, 0xFFFF }, { 0x0820, - 0x1111, 0x1319, 0x1809, 0xFFFF }, { 0x1303, 0x1215, 0x1607, 0x0E2B, 0x043D, 0xFFFF }, { 0x0916, 0x023C, 0x0B1E, 0x1031, 0x1201, 0x0F33, 0x0D2D, 0x151D, 0xFFFF }, { 0x0822, 0x0A04, 0x0D0A, 0x1025, 0x0C37, 0x0F29, 0x141B, 0x1E0D, 0xFFFF }, { - 0x1121, 0x0A39, 0x1B0B, 0x171F, 0xFFFF }, { 0x072A, 0x1213, 0x1317, 0xFFFF }, { 0x0830, 0x0914, 0x0636, 0x0C08, 0x0E35, 0x1505, 0xFFFF }, { 0x0900, 0x0824, 0x0B06, 0x0538, 0x1123, 0x1027, 0xFFFF }, { 0x0A1A, 0x1211, 0x1909, 0x083B, 0x0C2F, - 0xFFFF }, { 0x1315, 0x1707, 0x1419, 0x0F2B, 0x053D, 0xFFFF }, { 0x0912, 0x0734, 0x043A, 0x1131, 0x1301, 0x1403, 0x0E2D, 0x161D, 0xFFFF }, { 0x0826, 0x0F0C, 0x062E, 0x1033, 0x1125, 0x0D37, 0x151B, 0x1F0D, 0xFFFF }, { 0x1221, 0x0B39, 0x1029, - 0xFFFF }, { 0x0910, 0x1313, 0x1C0B, 0x181F, 0xFFFF }, { 0x0A18, 0x072C, 0x0F35, 0x1605, 0x1417, 0xFFFF }, { 0x0832, 0x0A02, 0x1223, 0x1127, 0xFFFF }, { 0x0828, 0x0B1C, 0x1311, 0x1A09, 0x093B, 0x0D2F, 0xFFFF }, { 0x0920, 0x1519, 0x063D, - 0xFFFF }, { 0x1231, 0x1503, 0x1415, 0x1807, 0x102B, 0x0F2D, 0x171D, 0xFFFF }, { 0x0A16, 0x033C, 0x0C1E, 0x1401, 0x1133, 0x1225, 0x0E37, 0x161B, 0xFFFF }, { 0x0922, 0x0B04, 0x0E0A, 0x1321, 0x1129, 0xFFFF }, { 0x0C39, 0x1D0B, 0x191F, 0xFFFF - }, { 0x082A, 0x1413, 0x1705, 0x1517, 0xFFFF }, { 0x0930, 0x0A14, 0x0736, 0x0D08, 0x1323, 0x1035, 0x1227, 0xFFFF }, { 0x0A00, 0x0924, 0x0C06, 0x0638, 0x1B09, 0x0A3B, 0x0E2F, 0xFFFF }, { 0x0B1A, 0x1411, 0x1619, 0x073D, 0xFFFF }, { 0x1331, - 0x1603, 0x1515, 0x1907, 0x112B, 0xFFFF }, { 0x0A12, 0x0834, 0x053A, 0x1501, 0x1233, 0x1325, 0x0F37, 0x171B, 0x102D, 0x181D, 0xFFFF }, { 0x0926, 0x072E, 0x1229, 0xFFFF }, { 0x1421, 0x0D39, 0x1E0B, 0x1A1F, 0xFFFF }, { 0x0A10, 0x1513, - 0x1617, 0xFFFF }, { 0x0B18, 0x082C, 0x1135, 0x1805, 0x1327, 0xFFFF }, { 0x0932, 0x0B02, 0x1423, 0x0B3B, 0x0F2F, 0xFFFF }, { 0x0928, 0x0C1C, 0x1511, 0x1719, 0x1C09, 0xFFFF }, { 0x0A20, 0x1703, 0x1615, 0x1A07, 0x122B, 0x083D, 0xFFFF }, { - 0x1431, 0x1601, 0x1333, 0x112D, 0x191D, 0xFFFF }, { 0x0B16, 0x043C, 0x0D1E, 0x1425, 0x1037, 0x1329, 0x181B, 0xFFFF }, { 0x0A22, 0x0C04, 0x0F0A, 0x1521, 0x0E39, 0x1F0B, 0x1B1F, 0xFFFF }, { 0x1613, 0x1717, 0xFFFF }, { 0x092A, 0x1235, 0x1905, - 0xFFFF }, { 0x0A30, 0x0B14, 0x0836, 0x0E08, 0x1523, 0x1427, 0xFFFF }, { 0x0B00, 0x0A24, 0x0D06, 0x0738, 0x1611, 0x1D09, 0x0C3B, 0x102F, 0xFFFF }, { 0x0C1A, 0x1715, 0x1B07, 0x1819, 0x132B, 0x093D, 0xFFFF }, { 0x1531, 0x1701, 0x1803, 0x122D, - 0x1A1D, 0xFFFF }, { 0x0B12, 0x0934, 0x063A, 0x1433, 0x1525, 0x1137, 0x191B, 0xFFFF }, { 0x0A26, 0x003E, 0x082E, 0x1621, 0x0F39, 0x1429, 0x003F, 0xFFFF }, { 0x1713, 0x1C1F, 0xFFFF }, { 0x0B10, 0x1335, 0x1A05, 0x1817, 0xFFFF }, { 0x0C18, - 0x092C, 0x1623, 0x1527, 0xFFFF }, { 0x0A32, 0x0C02, 0x1711, 0x1E09, 0x0D3B, 0x112F, 0xFFFF }, { 0x0A28, 0x0D1C, 0x1919, 0x0A3D, 0xFFFF }, { 0x0B20, 0x1631, 0x1903, 0x1815, 0x1C07, 0x142B, 0x132D, 0x1B1D, 0xFFFF }, { 0x1801, 0x1533, 0x1625, - 0x1237, 0x1A1B, 0xFFFF }, { 0x0C16, 0x053C, 0x0E1E, 0x1721, 0x1529, 0x013F, 0xFFFF }, { 0x0B22, 0x0D04, 0x1039, 0x1D1F, 0xFFFF }, { 0x1813, 0x1B05, 0x1917, 0xFFFF }, { 0x0A2A, 0x1723, 0x1435, 0x1627, 0xFFFF }, { 0x0B30, 0x0C14, 0x0936, - 0x0F08, 0x1F09, 0x0E3B, 0x122F, 0xFFFF }, { 0x0C00, 0x0B24, 0x0E06, 0x0838, 0x1811, 0x1A19, 0x0B3D, 0xFFFF }, { 0x0D1A, 0x1731, 0x1A03, 0x1915, 0x1D07, 0x152B, 0xFFFF }, { 0x1901, 0x1633, 0x1725, 0x1337, 0x1B1B, 0x142D, 0x1C1D, 0xFFFF }, { - 0x0C12, 0x0A34, 0x073A, 0x1629, 0x023F, 0xFFFF }, { 0x0B26, 0x013E, 0x092E, 0x1821, 0x1139, 0x1E1F, 0xFFFF }, { 0x1913, 0x1A17, 0xFFFF }, { 0x0C10, 0x1535, 0x1C05, 0x1727, 0xFFFF }, { 0x0D18, 0x0A2C, 0x1823, 0x0F3B, 0x132F, 0xFFFF }, { - 0x0B32, 0x0D02, 0x1911, 0x1B19, 0xFFFF }, { 0x0B28, 0x0E1C, 0x1B03, 0x1A15, 0x1E07, 0x162B, 0x0C3D, 0xFFFF }, { 0x0C20, 0x1831, 0x1A01, 0x1733, 0x152D, 0x1D1D, 0xFFFF }, { 0x1825, 0x1437, 0x1729, 0x1C1B, 0x033F, 0xFFFF }, { 0x0D16, 0x063C, - 0x0F1E, 0x1921, 0x1239, 0x1F1F, 0xFFFF }, { 0x0C22, 0x0E04, 0x1A13, 0x1B17, 0xFFFF }, { 0x1635, 0x1D05, 0xFFFF }, { 0x0B2A, 0x1923, 0x1827, 0xFFFF }, { 0x0C30, 0x0D14, 0x0A36, 0x1A11, 0x103B, 0x142F, 0xFFFF }, { 0x0D00, 0x0C24, 0x0F06, - 0x0938, 0x1B15, 0x1F07, 0x1C19, 0x172B, 0x0D3D, 0xFFFF }, { 0x0E1A, 0x1931, 0x1B01, 0x1C03, 0x162D, 0x1E1D, 0xFFFF }, { 0x1833, 0x1925, 0x1537, 0x1D1B, 0xFFFF }, { 0x0D12, 0x0B34, 0x083A, 0x1A21, 0x1339, 0x1829, 0x043F, 0xFFFF }, { 0x0C26, - 0x023E, 0x0A2E, 0x1B13, 0xFFFF }, { 0x1735, 0x1E05, 0x1C17, 0xFFFF }, { 0x0D10, 0x1A23, 0x1927, 0xFFFF }, { 0x0E18, 0x0B2C, 0x1B11, 0x113B, 0x152F, 0xFFFF }, { 0x0C32, 0x0E02, 0x1D19, 0x0E3D, 0xFFFF }, { 0x0C28, 0x0F1C, 0x1A31, 0x1D03, - 0x1C15, 0x182B, 0x172D, 0x1F1D, 0xFFFF }, { 0x0D20, 0x1C01, 0x1933, 0x1A25, 0x1637, 0x1E1B, 0xFFFF }, { 0x1B21, 0x1929, 0x053F, 0xFFFF }, { 0x0E16, 0x073C, 0x1439, 0xFFFF }, { 0x0D22, 0x0F04, 0x1C13, 0x1F05, 0x1D17, 0xFFFF }, { 0x1B23, - 0x1835, 0x1A27, 0xFFFF }, { 0x0C2A, 0x123B, 0x162F, 0xFFFF }, { 0x0D30, 0x0E14, 0x0B36, 0x1C11, 0x1E19, 0x0F3D, 0xFFFF }, { 0x0E00, 0x0D24, 0x0A38, 0x1B31, 0x1E03, 0x1D15, 0x192B, 0xFFFF }, { 0x0F1A, 0x1D01, 0x1A33, 0x1B25, 0x1737, 0x1F1B, - 0x182D, 0xFFFF }, { 0x1A29, 0x063F, 0xFFFF }, { 0x0E12, 0x0C34, 0x093A, 0x1C21, 0x1539, 0xFFFF }, { 0x0D26, 0x033E, 0x0B2E, 0x1D13, 0x1E17, 0xFFFF }, { 0x1935, 0x1B27, 0xFFFF }, { 0x0E10, 0x1C23, 0x133B, 0x172F, 0xFFFF }, { 0x0F18, - 0x0C2C, 0x1D11, 0x1F19, 0xFFFF }, { 0x0D32, 0x0F02, 0x1F03, 0x1E15, 0x1A2B, 0x103D, 0xFFFF }, { 0x0D28, 0x1C31, 0x1E01, 0x1B33, 0x192D, 0xFFFF }, { 0x0E20, 0x1C25, 0x1837, 0x1B29, 0x073F, 0xFFFF }, { 0x1D21, 0x1639, 0xFFFF }, { 0x0F16, - 0x083C, 0x1E13, 0x1F17, 0xFFFF }, { 0x0E22, 0x1A35, 0xFFFF }, { 0x1D23, 0x1C27, 0xFFFF }, { 0x0D2A, 0x1E11, 0x143B, 0x182F, 0xFFFF }, { 0x0E30, 0x0F14, 0x0C36, 0x1F15, 0x1B2B, 0x113D, 0xFFFF }, { 0x0F00, 0x0E24, 0x0B38, 0x1D31, 0x1F01, - 0x1A2D, 0xFFFF }, { 0x1C33, 0x1D25, 0x1937, 0xFFFF }, { 0x1E21, 0x1739, 0x1C29, 0x083F, 0xFFFF }, { 0x0F12, 0x0D34, 0x0A3A, 0x1F13, 0xFFFF }, { 0x0E26, 0x043E, 0x0C2E, 0x1B35, 0xFFFF }, { 0x1E23, 0x1D27, 0xFFFF }, { 0x0F10, 0x1F11, 0x153B, 0x192F, 0xFFFF }, { 0x0D2C, 0x123D, 0xFFFF }, - }; - - static uint32_t etc1_decode_value(uint32_t diff, uint32_t inten, uint32_t selector, uint32_t packed_c) - { - const uint32_t limit = diff ? 32 : 16; - BASISU_NOTE_UNUSED(limit); - assert((diff < 2) && (inten < 8) && (selector < 4) && (packed_c < limit)); - int c; - if (diff) - c = (packed_c >> 2) | (packed_c << 3); - else - c = packed_c | (packed_c << 4); - c += g_etc1_inten_tables[inten][selector]; - c = clamp(c, 0, 255); - return c; - } - - void pack_etc1_solid_color_init() - { - for (uint32_t diff = 0; diff < 2; diff++) - { - const uint32_t limit = diff ? 32 : 16; - - for (uint32_t inten = 0; inten < 8; inten++) - { - for (uint32_t selector = 0; selector < 4; selector++) - { - const uint32_t inverse_table_index = diff + (inten << 1) + (selector << 4); - for (uint32_t color = 0; color < 256; color++) - { - uint32_t best_error = UINT32_MAX, best_packed_c = 0; - for (uint32_t packed_c = 0; packed_c < limit; packed_c++) - { - int v = etc1_decode_value(diff, inten, selector, packed_c); - uint32_t err = (uint32_t)labs(v - static_cast(color)); - if (err < best_error) - { - best_error = err; - best_packed_c = packed_c; - if (!best_error) - break; - } - } - assert(best_error <= 255); - g_etc1_inverse_lookup[inverse_table_index][color] = static_cast(best_packed_c | (best_error << 8)); - } - } - } - } - -#if 0 - for (uint32_t y = 0; y < 64; y++) - { - printf("{"); - for (uint32_t x = 0; x < 256; x++) - { - printf("0x%X", g_etc1_inverse_lookup[y][x]); - if (x != 255) - printf(","); - if (((x & 63) == 63) && (x != 255)) - printf("\n"); - } - printf("},\n"); - } -#endif - } - - // Packs solid color blocks efficiently using a set of small precomputed tables. - // For random 888 inputs, MSE results are better than Erricson's ETC1 packer in "slow" mode ~9.5% of the time, is slightly worse only ~.01% of the time, and is equal the rest of the time. - uint64_t pack_etc1_block_solid_color(etc_block& block, const uint8_t* pColor) - { - assert(g_etc1_inverse_lookup[0][255]); - - static uint32_t s_next_comp[4] = { 1, 2, 0, 1 }; - - uint32_t best_error = UINT32_MAX, best_i = 0; - int best_x = 0, best_packed_c1 = 0, best_packed_c2 = 0; - - // For each possible 8-bit value, there is a precomputed list of diff/inten/selector configurations that allow that 8-bit value to be encoded with no error. - for (uint32_t i = 0; i < 3; i++) - { - const uint32_t c1 = pColor[s_next_comp[i]], c2 = pColor[s_next_comp[i + 1]]; - - const int delta_range = 1; - for (int delta = -delta_range; delta <= delta_range; delta++) - { - const int c_plus_delta = clamp(pColor[i] + delta, 0, 255); - - const uint16_t* pTable; - if (!c_plus_delta) - pTable = g_etc1_color8_to_etc_block_config_0_255[0]; - else if (c_plus_delta == 255) - pTable = g_etc1_color8_to_etc_block_config_0_255[1]; - else - pTable = g_etc1_color8_to_etc_block_config_1_to_254[c_plus_delta - 1]; - - do - { - const uint32_t x = *pTable++; - -#ifdef _DEBUG - const uint32_t diff = x & 1; - const uint32_t inten = (x >> 1) & 7; - const uint32_t selector = (x >> 4) & 3; - const uint32_t p0 = (x >> 8) & 255; - assert(etc1_decode_value(diff, inten, selector, p0) == (uint32_t)c_plus_delta); -#endif - - const uint16_t* pInverse_table = g_etc1_inverse_lookup[x & 0xFF]; - uint16_t p1 = pInverse_table[c1]; - uint16_t p2 = pInverse_table[c2]; - const uint32_t trial_error = square(c_plus_delta - pColor[i]) + square(p1 >> 8) + square(p2 >> 8); - if (trial_error < best_error) - { - best_error = trial_error; - best_x = x; - best_packed_c1 = p1 & 0xFF; - best_packed_c2 = p2 & 0xFF; - best_i = i; - if (!best_error) - goto found_perfect_match; - } - } while (*pTable != 0xFFFF); - } - } - found_perfect_match: - - const uint32_t diff = best_x & 1; - const uint32_t inten = (best_x >> 1) & 7; - - block.m_bytes[3] = static_cast(((inten | (inten << 3)) << 2) | (diff << 1)); - - const uint32_t etc1_selector = g_selector_index_to_etc1[(best_x >> 4) & 3]; - *reinterpret_cast(&block.m_bytes[4]) = (etc1_selector & 2) ? 0xFFFF : 0; - *reinterpret_cast(&block.m_bytes[6]) = (etc1_selector & 1) ? 0xFFFF : 0; - - const uint32_t best_packed_c0 = (best_x >> 8) & 255; - if (diff) - { - block.m_bytes[best_i] = static_cast(best_packed_c0 << 3); - block.m_bytes[s_next_comp[best_i]] = static_cast(best_packed_c1 << 3); - block.m_bytes[s_next_comp[best_i + 1]] = static_cast(best_packed_c2 << 3); - } - else - { - block.m_bytes[best_i] = static_cast(best_packed_c0 | (best_packed_c0 << 4)); - block.m_bytes[s_next_comp[best_i]] = static_cast(best_packed_c1 | (best_packed_c1 << 4)); - block.m_bytes[s_next_comp[best_i + 1]] = static_cast(best_packed_c2 | (best_packed_c2 << 4)); - } - - return best_error; - } - - const uint32_t BASISU_ETC1_CLUSTER_FIT_ORDER_TABLE_SIZE = 165; - - static const struct { uint8_t m_v[4]; } g_cluster_fit_order_tab[BASISU_ETC1_CLUSTER_FIT_ORDER_TABLE_SIZE] = - { - { { 0, 0, 0, 8 } },{ { 0, 5, 2, 1 } },{ { 0, 6, 1, 1 } },{ { 0, 7, 0, 1 } },{ { 0, 7, 1, 0 } }, - { { 0, 0, 8, 0 } },{ { 0, 0, 3, 5 } },{ { 0, 1, 7, 0 } },{ { 0, 0, 4, 4 } },{ { 0, 0, 2, 6 } }, - { { 0, 0, 7, 1 } },{ { 0, 0, 1, 7 } },{ { 0, 0, 5, 3 } },{ { 1, 6, 0, 1 } },{ { 0, 0, 6, 2 } }, - { { 0, 2, 6, 0 } },{ { 2, 4, 2, 0 } },{ { 0, 3, 5, 0 } },{ { 3, 3, 1, 1 } },{ { 4, 2, 0, 2 } }, - { { 1, 5, 2, 0 } },{ { 0, 5, 3, 0 } },{ { 0, 6, 2, 0 } },{ { 2, 4, 1, 1 } },{ { 5, 1, 0, 2 } }, - { { 6, 1, 1, 0 } },{ { 3, 3, 0, 2 } },{ { 6, 0, 0, 2 } },{ { 0, 8, 0, 0 } },{ { 6, 1, 0, 1 } }, - { { 0, 1, 6, 1 } },{ { 1, 6, 1, 0 } },{ { 4, 1, 3, 0 } },{ { 0, 2, 5, 1 } },{ { 5, 0, 3, 0 } }, - { { 5, 3, 0, 0 } },{ { 0, 1, 5, 2 } },{ { 0, 3, 4, 1 } },{ { 2, 5, 1, 0 } },{ { 1, 7, 0, 0 } }, - { { 0, 1, 4, 3 } },{ { 6, 0, 2, 0 } },{ { 0, 4, 4, 0 } },{ { 2, 6, 0, 0 } },{ { 0, 2, 4, 2 } }, - { { 0, 5, 1, 2 } },{ { 0, 6, 0, 2 } },{ { 3, 5, 0, 0 } },{ { 0, 4, 3, 1 } },{ { 3, 4, 1, 0 } }, - { { 4, 3, 1, 0 } },{ { 1, 5, 0, 2 } },{ { 0, 3, 3, 2 } },{ { 1, 4, 1, 2 } },{ { 0, 4, 2, 2 } }, - { { 2, 3, 3, 0 } },{ { 4, 4, 0, 0 } },{ { 1, 2, 4, 1 } },{ { 0, 5, 0, 3 } },{ { 0, 1, 3, 4 } }, - { { 1, 5, 1, 1 } },{ { 1, 4, 2, 1 } },{ { 1, 3, 2, 2 } },{ { 5, 2, 1, 0 } },{ { 1, 3, 3, 1 } }, - { { 0, 1, 2, 5 } },{ { 1, 1, 5, 1 } },{ { 0, 3, 2, 3 } },{ { 2, 5, 0, 1 } },{ { 3, 2, 2, 1 } }, - { { 2, 3, 0, 3 } },{ { 1, 4, 3, 0 } },{ { 2, 2, 1, 3 } },{ { 6, 2, 0, 0 } },{ { 1, 0, 6, 1 } }, - { { 3, 3, 2, 0 } },{ { 7, 1, 0, 0 } },{ { 3, 1, 4, 0 } },{ { 0, 2, 3, 3 } },{ { 0, 4, 1, 3 } }, - { { 0, 4, 0, 4 } },{ { 0, 1, 0, 7 } },{ { 2, 0, 5, 1 } },{ { 2, 0, 4, 2 } },{ { 3, 0, 2, 3 } }, - { { 2, 2, 4, 0 } },{ { 2, 2, 3, 1 } },{ { 4, 0, 3, 1 } },{ { 3, 2, 3, 0 } },{ { 2, 3, 2, 1 } }, - { { 1, 3, 4, 0 } },{ { 7, 0, 1, 0 } },{ { 3, 0, 4, 1 } },{ { 1, 0, 5, 2 } },{ { 8, 0, 0, 0 } }, - { { 3, 0, 1, 4 } },{ { 4, 1, 1, 2 } },{ { 4, 0, 2, 2 } },{ { 1, 2, 5, 0 } },{ { 4, 2, 1, 1 } }, - { { 3, 4, 0, 1 } },{ { 2, 0, 3, 3 } },{ { 5, 0, 1, 2 } },{ { 5, 0, 0, 3 } },{ { 2, 4, 0, 2 } }, - { { 2, 1, 4, 1 } },{ { 4, 0, 1, 3 } },{ { 2, 1, 5, 0 } },{ { 4, 2, 2, 0 } },{ { 4, 0, 4, 0 } }, - { { 1, 0, 4, 3 } },{ { 1, 4, 0, 3 } },{ { 3, 0, 3, 2 } },{ { 4, 3, 0, 1 } },{ { 0, 1, 1, 6 } }, - { { 1, 3, 1, 3 } },{ { 0, 2, 2, 4 } },{ { 2, 0, 2, 4 } },{ { 5, 1, 1, 1 } },{ { 3, 0, 5, 0 } }, - { { 2, 3, 1, 2 } },{ { 3, 0, 0, 5 } },{ { 0, 3, 1, 4 } },{ { 5, 0, 2, 1 } },{ { 2, 1, 3, 2 } }, - { { 2, 0, 6, 0 } },{ { 3, 1, 3, 1 } },{ { 5, 1, 2, 0 } },{ { 1, 0, 3, 4 } },{ { 1, 1, 6, 0 } }, - { { 4, 0, 0, 4 } },{ { 2, 0, 1, 5 } },{ { 0, 3, 0, 5 } },{ { 1, 3, 0, 4 } },{ { 4, 1, 2, 1 } }, - { { 1, 2, 3, 2 } },{ { 3, 1, 0, 4 } },{ { 5, 2, 0, 1 } },{ { 1, 2, 2, 3 } },{ { 3, 2, 1, 2 } }, - { { 2, 2, 2, 2 } },{ { 6, 0, 1, 1 } },{ { 1, 2, 1, 4 } },{ { 1, 1, 4, 2 } },{ { 3, 2, 0, 3 } }, - { { 1, 2, 0, 5 } },{ { 1, 0, 7, 0 } },{ { 3, 1, 2, 2 } },{ { 1, 0, 2, 5 } },{ { 2, 0, 0, 6 } }, - { { 2, 1, 1, 4 } },{ { 2, 2, 0, 4 } },{ { 1, 1, 3, 3 } },{ { 7, 0, 0, 1 } },{ { 1, 0, 0, 7 } }, - { { 2, 1, 2, 3 } },{ { 4, 1, 0, 3 } },{ { 3, 1, 1, 3 } },{ { 1, 1, 2, 4 } },{ { 2, 1, 0, 5 } }, - { { 1, 0, 1, 6 } },{ { 0, 2, 1, 5 } },{ { 0, 2, 0, 6 } },{ { 1, 1, 1, 5 } },{ { 1, 1, 0, 6 } } - }; - - const int g_etc1_inten_tables[cETC1IntenModifierValues][cETC1SelectorValues] = - { - { -8, -2, 2, 8 }, { -17, -5, 5, 17 }, { -29, -9, 9, 29 }, { -42, -13, 13, 42 }, - { -60, -18, 18, 60 }, { -80, -24, 24, 80 }, { -106, -33, 33, 106 }, { -183, -47, 47, 183 } - }; - - const uint8_t g_etc1_to_selector_index[cETC1SelectorValues] = { 2, 3, 1, 0 }; - const uint8_t g_selector_index_to_etc1[cETC1SelectorValues] = { 3, 2, 0, 1 }; - - // [flip][subblock][pixel_index] - const etc_coord2 g_etc1_pixel_coords[2][2][8] = - { - { - { - { 0, 0 }, { 0, 1 }, { 0, 2 }, { 0, 3 }, - { 1, 0 }, { 1, 1 }, { 1, 2 }, { 1, 3 } - }, - { - { 2, 0 }, { 2, 1 }, { 2, 2 }, { 2, 3 }, - { 3, 0 }, { 3, 1 }, { 3, 2 }, { 3, 3 } - } - }, - { - { - { 0, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 }, - { 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1 } - }, - { - { 0, 2 }, { 1, 2 }, { 2, 2 }, { 3, 2 }, - { 0, 3 }, { 1, 3 }, { 2, 3 }, { 3, 3 } - }, - } - }; - - // [flip][subblock][pixel_index] - const uint32_t g_etc1_pixel_indices[2][2][8] = - { - { - { - 0 + 4 * 0, 0 + 4 * 1, 0 + 4 * 2, 0 + 4 * 3, - 1 + 4 * 0, 1 + 4 * 1, 1 + 4 * 2, 1 + 4 * 3 - }, - { - 2 + 4 * 0, 2 + 4 * 1, 2 + 4 * 2, 2 + 4 * 3, - 3 + 4 * 0, 3 + 4 * 1, 3 + 4 * 2, 3 + 4 * 3 - } - }, - { - { - 0 + 4 * 0, 1 + 4 * 0, 2 + 4 * 0, 3 + 4 * 0, - 0 + 4 * 1, 1 + 4 * 1, 2 + 4 * 1, 3 + 4 * 1 - }, - { - 0 + 4 * 2, 1 + 4 * 2, 2 + 4 * 2, 3 + 4 * 2, - 0 + 4 * 3, 1 + 4 * 3, 2 + 4 * 3, 3 + 4 * 3 - }, - } - }; - - uint16_t etc_block::pack_color5(const color_rgba& color, bool scaled, uint32_t bias) - { - return pack_color5(color.r, color.g, color.b, scaled, bias); - } - - uint16_t etc_block::pack_color5(uint32_t r, uint32_t g, uint32_t b, bool scaled, uint32_t bias) - { - if (scaled) - { - r = (r * 31U + bias) / 255U; - g = (g * 31U + bias) / 255U; - b = (b * 31U + bias) / 255U; - } - - r = minimum(r, 31U); - g = minimum(g, 31U); - b = minimum(b, 31U); - - return static_cast(b | (g << 5U) | (r << 10U)); - } - - color_rgba etc_block::unpack_color5(uint16_t packed_color5, bool scaled, uint32_t alpha) - { - uint32_t b = packed_color5 & 31U; - uint32_t g = (packed_color5 >> 5U) & 31U; - uint32_t r = (packed_color5 >> 10U) & 31U; - - if (scaled) - { - b = (b << 3U) | (b >> 2U); - g = (g << 3U) | (g >> 2U); - r = (r << 3U) | (r >> 2U); - } - - return color_rgba(cNoClamp, r, g, b, minimum(alpha, 255U)); - } - - void etc_block::unpack_color5(color_rgba& result, uint16_t packed_color5, bool scaled) - { - result = unpack_color5(packed_color5, scaled, 255); - } - - void etc_block::unpack_color5(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color5, bool scaled) - { - color_rgba c(unpack_color5(packed_color5, scaled, 0)); - r = c.r; - g = c.g; - b = c.b; - } - - bool etc_block::unpack_color5(color_rgba& result, uint16_t packed_color5, uint16_t packed_delta3, bool scaled, uint32_t alpha) - { - color_rgba_i16 dc(unpack_delta3(packed_delta3)); - - int b = (packed_color5 & 31U) + dc.b; - int g = ((packed_color5 >> 5U) & 31U) + dc.g; - int r = ((packed_color5 >> 10U) & 31U) + dc.r; - - bool success = true; - if (static_cast(r | g | b) > 31U) - { - success = false; - r = clamp(r, 0, 31); - g = clamp(g, 0, 31); - b = clamp(b, 0, 31); - } - - if (scaled) - { - b = (b << 3U) | (b >> 2U); - g = (g << 3U) | (g >> 2U); - r = (r << 3U) | (r >> 2U); - } - - result.set_noclamp_rgba(r, g, b, minimum(alpha, 255U)); - return success; - } - - bool etc_block::unpack_color5(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color5, uint16_t packed_delta3, bool scaled, uint32_t alpha) - { - color_rgba result; - const bool success = unpack_color5(result, packed_color5, packed_delta3, scaled, alpha); - r = result.r; - g = result.g; - b = result.b; - return success; - } - - uint16_t etc_block::pack_delta3(const color_rgba_i16& color) - { - return pack_delta3(color.r, color.g, color.b); - } - - uint16_t etc_block::pack_delta3(int r, int g, int b) - { - assert((r >= cETC1ColorDeltaMin) && (r <= cETC1ColorDeltaMax)); - assert((g >= cETC1ColorDeltaMin) && (g <= cETC1ColorDeltaMax)); - assert((b >= cETC1ColorDeltaMin) && (b <= cETC1ColorDeltaMax)); - if (r < 0) r += 8; - if (g < 0) g += 8; - if (b < 0) b += 8; - return static_cast(b | (g << 3) | (r << 6)); - } - - color_rgba_i16 etc_block::unpack_delta3(uint16_t packed_delta3) - { - int r = (packed_delta3 >> 6) & 7; - int g = (packed_delta3 >> 3) & 7; - int b = packed_delta3 & 7; - if (r >= 4) r -= 8; - if (g >= 4) g -= 8; - if (b >= 4) b -= 8; - return color_rgba_i16(r, g, b, 255); - } - - void etc_block::unpack_delta3(int& r, int& g, int& b, uint16_t packed_delta3) - { - r = (packed_delta3 >> 6) & 7; - g = (packed_delta3 >> 3) & 7; - b = packed_delta3 & 7; - if (r >= 4) r -= 8; - if (g >= 4) g -= 8; - if (b >= 4) b -= 8; - } - - uint16_t etc_block::pack_color4(const color_rgba& color, bool scaled, uint32_t bias) - { - return pack_color4(color.r, color.g, color.b, scaled, bias); - } - - uint16_t etc_block::pack_color4(uint32_t r, uint32_t g, uint32_t b, bool scaled, uint32_t bias) - { - if (scaled) - { - r = (r * 15U + bias) / 255U; - g = (g * 15U + bias) / 255U; - b = (b * 15U + bias) / 255U; - } - - r = minimum(r, 15U); - g = minimum(g, 15U); - b = minimum(b, 15U); - - return static_cast(b | (g << 4U) | (r << 8U)); - } - - color_rgba etc_block::unpack_color4(uint16_t packed_color4, bool scaled, uint32_t alpha) - { - uint32_t b = packed_color4 & 15U; - uint32_t g = (packed_color4 >> 4U) & 15U; - uint32_t r = (packed_color4 >> 8U) & 15U; - - if (scaled) - { - b = (b << 4U) | b; - g = (g << 4U) | g; - r = (r << 4U) | r; - } - - return color_rgba(cNoClamp, r, g, b, minimum(alpha, 255U)); - } - - void etc_block::unpack_color4(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color4, bool scaled) - { - color_rgba c(unpack_color4(packed_color4, scaled, 0)); - r = c.r; - g = c.g; - b = c.b; - } - - void etc_block::get_diff_subblock_colors(color_rgba* pDst, uint16_t packed_color5, uint32_t table_idx) - { - assert(table_idx < cETC1IntenModifierValues); - const int *pInten_modifer_table = &g_etc1_inten_tables[table_idx][0]; - - uint32_t r, g, b; - unpack_color5(r, g, b, packed_color5, true); - - const int ir = static_cast(r), ig = static_cast(g), ib = static_cast(b); - - const int y0 = pInten_modifer_table[0]; - pDst[0].set(ir + y0, ig + y0, ib + y0, 255); - - const int y1 = pInten_modifer_table[1]; - pDst[1].set(ir + y1, ig + y1, ib + y1, 255); - - const int y2 = pInten_modifer_table[2]; - pDst[2].set(ir + y2, ig + y2, ib + y2, 255); - - const int y3 = pInten_modifer_table[3]; - pDst[3].set(ir + y3, ig + y3, ib + y3, 255); - } - - bool etc_block::get_diff_subblock_colors(color_rgba* pDst, uint16_t packed_color5, uint16_t packed_delta3, uint32_t table_idx) - { - assert(table_idx < cETC1IntenModifierValues); - const int *pInten_modifer_table = &g_etc1_inten_tables[table_idx][0]; - - uint32_t r, g, b; - bool success = unpack_color5(r, g, b, packed_color5, packed_delta3, true); - - const int ir = static_cast(r), ig = static_cast(g), ib = static_cast(b); - - const int y0 = pInten_modifer_table[0]; - pDst[0].set(ir + y0, ig + y0, ib + y0, 255); - - const int y1 = pInten_modifer_table[1]; - pDst[1].set(ir + y1, ig + y1, ib + y1, 255); - - const int y2 = pInten_modifer_table[2]; - pDst[2].set(ir + y2, ig + y2, ib + y2, 255); - - const int y3 = pInten_modifer_table[3]; - pDst[3].set(ir + y3, ig + y3, ib + y3, 255); - - return success; - } - - void etc_block::get_abs_subblock_colors(color_rgba* pDst, uint16_t packed_color4, uint32_t table_idx) - { - assert(table_idx < cETC1IntenModifierValues); - const int *pInten_modifer_table = &g_etc1_inten_tables[table_idx][0]; - - uint32_t r, g, b; - unpack_color4(r, g, b, packed_color4, true); - - const int ir = static_cast(r), ig = static_cast(g), ib = static_cast(b); - - const int y0 = pInten_modifer_table[0]; - pDst[0].set(ir + y0, ig + y0, ib + y0, 255); - - const int y1 = pInten_modifer_table[1]; - pDst[1].set(ir + y1, ig + y1, ib + y1, 255); - - const int y2 = pInten_modifer_table[2]; - pDst[2].set(ir + y2, ig + y2, ib + y2, 255); - - const int y3 = pInten_modifer_table[3]; - pDst[3].set(ir + y3, ig + y3, ib + y3, 255); - } - - bool unpack_etc1(const etc_block& block, color_rgba *pDst, bool preserve_alpha) - { - const bool diff_flag = block.get_diff_bit(); - const bool flip_flag = block.get_flip_bit(); - const uint32_t table_index0 = block.get_inten_table(0); - const uint32_t table_index1 = block.get_inten_table(1); - - color_rgba subblock_colors0[4]; - color_rgba subblock_colors1[4]; - - if (diff_flag) - { - const uint16_t base_color5 = block.get_base5_color(); - const uint16_t delta_color3 = block.get_delta3_color(); - etc_block::get_diff_subblock_colors(subblock_colors0, base_color5, table_index0); - - if (!etc_block::get_diff_subblock_colors(subblock_colors1, base_color5, delta_color3, table_index1)) - return false; - } - else - { - const uint16_t base_color4_0 = block.get_base4_color(0); - etc_block::get_abs_subblock_colors(subblock_colors0, base_color4_0, table_index0); - - const uint16_t base_color4_1 = block.get_base4_color(1); - etc_block::get_abs_subblock_colors(subblock_colors1, base_color4_1, table_index1); - } - - if (preserve_alpha) - { - if (flip_flag) - { - for (uint32_t y = 0; y < 2; y++) - { - pDst[0].set_rgb(subblock_colors0[block.get_selector(0, y)]); - pDst[1].set_rgb(subblock_colors0[block.get_selector(1, y)]); - pDst[2].set_rgb(subblock_colors0[block.get_selector(2, y)]); - pDst[3].set_rgb(subblock_colors0[block.get_selector(3, y)]); - pDst += 4; - } - - for (uint32_t y = 2; y < 4; y++) - { - pDst[0].set_rgb(subblock_colors1[block.get_selector(0, y)]); - pDst[1].set_rgb(subblock_colors1[block.get_selector(1, y)]); - pDst[2].set_rgb(subblock_colors1[block.get_selector(2, y)]); - pDst[3].set_rgb(subblock_colors1[block.get_selector(3, y)]); - pDst += 4; - } - } - else - { - for (uint32_t y = 0; y < 4; y++) - { - pDst[0].set_rgb(subblock_colors0[block.get_selector(0, y)]); - pDst[1].set_rgb(subblock_colors0[block.get_selector(1, y)]); - pDst[2].set_rgb(subblock_colors1[block.get_selector(2, y)]); - pDst[3].set_rgb(subblock_colors1[block.get_selector(3, y)]); - pDst += 4; - } - } - } - else - { - if (flip_flag) - { - // 0000 - // 0000 - // 1111 - // 1111 - for (uint32_t y = 0; y < 2; y++) - { - pDst[0] = subblock_colors0[block.get_selector(0, y)]; - pDst[1] = subblock_colors0[block.get_selector(1, y)]; - pDst[2] = subblock_colors0[block.get_selector(2, y)]; - pDst[3] = subblock_colors0[block.get_selector(3, y)]; - pDst += 4; - } - - for (uint32_t y = 2; y < 4; y++) - { - pDst[0] = subblock_colors1[block.get_selector(0, y)]; - pDst[1] = subblock_colors1[block.get_selector(1, y)]; - pDst[2] = subblock_colors1[block.get_selector(2, y)]; - pDst[3] = subblock_colors1[block.get_selector(3, y)]; - pDst += 4; - } - } - else - { - // 0011 - // 0011 - // 0011 - // 0011 - for (uint32_t y = 0; y < 4; y++) - { - pDst[0] = subblock_colors0[block.get_selector(0, y)]; - pDst[1] = subblock_colors0[block.get_selector(1, y)]; - pDst[2] = subblock_colors1[block.get_selector(2, y)]; - pDst[3] = subblock_colors1[block.get_selector(3, y)]; - pDst += 4; - } - } - } - - return true; - } - - inline int extend_6_to_8(uint32_t n) - { - return (n << 2) | (n >> 4); - } - - inline int extend_7_to_8(uint32_t n) - { - return (n << 1) | (n >> 6); - } - - inline int extend_4_to_8(uint32_t n) - { - return (n << 4) | n; - } - - uint64_t etc_block::evaluate_etc1_error(const color_rgba* pBlock_pixels, bool perceptual, int subblock_index) const - { - color_rgba unpacked_block[16]; - - unpack_etc1(*this, unpacked_block); - - uint64_t total_error = 0; - - if (subblock_index < 0) - { - for (uint32_t i = 0; i < 16; i++) - total_error += color_distance(perceptual, pBlock_pixels[i], unpacked_block[i], false); - } - else - { - const bool flip_bit = get_flip_bit(); - - for (uint32_t i = 0; i < 8; i++) - { - const uint32_t idx = g_etc1_pixel_indices[flip_bit][subblock_index][i]; - - total_error += color_distance(perceptual, pBlock_pixels[idx], unpacked_block[idx], false); - } - } - - return total_error; - } - - void etc_block::get_subblock_pixels(color_rgba* pPixels, int subblock_index) const - { - if (subblock_index < 0) - unpack_etc1(*this, pPixels); - else - { - color_rgba unpacked_block[16]; - - unpack_etc1(*this, unpacked_block); - - const bool flip_bit = get_flip_bit(); - - for (uint32_t i = 0; i < 8; i++) - { - const uint32_t idx = g_etc1_pixel_indices[flip_bit][subblock_index][i]; - - pPixels[i] = unpacked_block[idx]; - } - } - } - - bool etc1_optimizer::compute() - { - assert(m_pResult->m_pSelectors); - - if (m_pParams->m_pForce_selectors) - { - assert(m_pParams->m_quality >= cETCQualitySlow); - if (m_pParams->m_quality < cETCQualitySlow) - return false; - } - - const uint32_t n = m_pParams->m_num_src_pixels; - - if (m_pParams->m_cluster_fit) - { - if (m_pParams->m_quality == cETCQualityFast) - compute_internal_cluster_fit(4); - else if (m_pParams->m_quality == cETCQualityMedium) - compute_internal_cluster_fit(16); - else if (m_pParams->m_quality == cETCQualitySlow) - compute_internal_cluster_fit(64); - else - compute_internal_cluster_fit(BASISU_ETC1_CLUSTER_FIT_ORDER_TABLE_SIZE); - } - else - compute_internal_neighborhood(m_br, m_bg, m_bb); - - if (!m_best_solution.m_valid) - { - m_pResult->m_error = UINT32_MAX; - return false; - } - - //const uint8_t* pSelectors = &m_best_solution.m_selectors[0]; - const uint8_t* pSelectors = m_pParams->m_pForce_selectors ? m_pParams->m_pForce_selectors : &m_best_solution.m_selectors[0]; - -#if defined(DEBUG) || defined(_DEBUG) - { - // sanity check the returned error - color_rgba block_colors[4]; - m_best_solution.m_coords.get_block_colors(block_colors); - - const color_rgba* pSrc_pixels = m_pParams->m_pSrc_pixels; - uint64_t actual_error = 0; - - bool perceptual; - if (m_pParams->m_quality >= cETCQualityMedium) - perceptual = m_pParams->m_perceptual; - else - perceptual = (m_pParams->m_quality == cETCQualityFast) ? false : m_pParams->m_perceptual; - - for (uint32_t i = 0; i < n; i++) - actual_error += color_distance(perceptual, pSrc_pixels[i], block_colors[pSelectors[i]], false); - - assert(actual_error == m_best_solution.m_error); - } -#endif - - m_pResult->m_error = m_best_solution.m_error; - - m_pResult->m_block_color_unscaled = m_best_solution.m_coords.m_unscaled_color; - m_pResult->m_block_color4 = m_best_solution.m_coords.m_color4; - - m_pResult->m_block_inten_table = m_best_solution.m_coords.m_inten_table; - memcpy(m_pResult->m_pSelectors, pSelectors, n); - m_pResult->m_n = n; - - return true; - } - - void etc1_optimizer::refine_solution(uint32_t max_refinement_trials) - { - // Now we have the input block, the avg. color of the input pixels, a set of trial selector indices, and the block color+intensity index. - // Now, for each component, attempt to refine the current solution by solving a simple linear equation. For example, for 4 colors: - // The goal is: - // pixel0 - (block_color+inten_table[selector0]) + pixel1 - (block_color+inten_table[selector1]) + pixel2 - (block_color+inten_table[selector2]) + pixel3 - (block_color+inten_table[selector3]) = 0 - // Rearranging this: - // (pixel0 + pixel1 + pixel2 + pixel3) - (block_color+inten_table[selector0]) - (block_color+inten_table[selector1]) - (block_color+inten_table[selector2]) - (block_color+inten_table[selector3]) = 0 - // (pixel0 + pixel1 + pixel2 + pixel3) - block_color - inten_table[selector0] - block_color-inten_table[selector1] - block_color-inten_table[selector2] - block_color-inten_table[selector3] = 0 - // (pixel0 + pixel1 + pixel2 + pixel3) - 4*block_color - inten_table[selector0] - inten_table[selector1] - inten_table[selector2] - inten_table[selector3] = 0 - // (pixel0 + pixel1 + pixel2 + pixel3) - 4*block_color - (inten_table[selector0] + inten_table[selector1] + inten_table[selector2] + inten_table[selector3]) = 0 - // (pixel0 + pixel1 + pixel2 + pixel3)/4 - block_color - (inten_table[selector0] + inten_table[selector1] + inten_table[selector2] + inten_table[selector3])/4 = 0 - // block_color = (pixel0 + pixel1 + pixel2 + pixel3)/4 - (inten_table[selector0] + inten_table[selector1] + inten_table[selector2] + inten_table[selector3])/4 - // So what this means: - // optimal_block_color = avg_input - avg_inten_delta - // So the optimal block color can be computed by taking the average block color and subtracting the current average of the intensity delta. - // Unfortunately, optimal_block_color must then be quantized to 555 or 444 so it's not always possible to improve matters using this formula. - // Also, the above formula is for unclamped intensity deltas. The actual implementation takes into account clamping. - - const uint32_t n = m_pParams->m_num_src_pixels; - - for (uint32_t refinement_trial = 0; refinement_trial < max_refinement_trials; refinement_trial++) - { - const uint8_t* pSelectors = &m_best_solution.m_selectors[0]; - const int* pInten_table = g_etc1_inten_tables[m_best_solution.m_coords.m_inten_table]; - - int delta_sum_r = 0, delta_sum_g = 0, delta_sum_b = 0; - const color_rgba base_color(m_best_solution.m_coords.get_scaled_color()); - for (uint32_t r = 0; r < n; r++) - { - const uint32_t s = *pSelectors++; - const int yd_temp = pInten_table[s]; - // Compute actual delta being applied to each pixel, taking into account clamping. - delta_sum_r += clamp(base_color.r + yd_temp, 0, 255) - base_color.r; - delta_sum_g += clamp(base_color.g + yd_temp, 0, 255) - base_color.g; - delta_sum_b += clamp(base_color.b + yd_temp, 0, 255) - base_color.b; - } - - if ((!delta_sum_r) && (!delta_sum_g) && (!delta_sum_b)) - break; - - const float avg_delta_r_f = static_cast(delta_sum_r) / n; - const float avg_delta_g_f = static_cast(delta_sum_g) / n; - const float avg_delta_b_f = static_cast(delta_sum_b) / n; - const int br1 = clamp(static_cast((m_avg_color[0] - avg_delta_r_f) * m_limit / 255.0f + .5f), 0, m_limit); - const int bg1 = clamp(static_cast((m_avg_color[1] - avg_delta_g_f) * m_limit / 255.0f + .5f), 0, m_limit); - const int bb1 = clamp(static_cast((m_avg_color[2] - avg_delta_b_f) * m_limit / 255.0f + .5f), 0, m_limit); - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Refinement trial %u, avg_delta %f %f %f\n", refinement_trial, avg_delta_r_f, avg_delta_g_f, avg_delta_b_f); -#endif - - if (!evaluate_solution(etc1_solution_coordinates(br1, bg1, bb1, 0, m_pParams->m_use_color4), m_trial_solution, &m_best_solution)) - break; - - } // refinement_trial - } - - void etc1_optimizer::compute_internal_neighborhood(int scan_r, int scan_g, int scan_b) - { - if (m_best_solution.m_error == 0) - return; - - //const uint32_t n = m_pParams->m_num_src_pixels; - const int scan_delta_size = m_pParams->m_scan_delta_size; - - // Scan through a subset of the 3D lattice centered around the avg block color trying each 3D (555 or 444) lattice point as a potential block color. - // Each time a better solution is found try to refine the current solution's block color based of the current selectors and intensity table index. - for (int zdi = 0; zdi < scan_delta_size; zdi++) - { - const int zd = m_pParams->m_pScan_deltas[zdi]; - const int mbb = scan_b + zd; - if (mbb < 0) continue; else if (mbb > m_limit) break; - - for (int ydi = 0; ydi < scan_delta_size; ydi++) - { - const int yd = m_pParams->m_pScan_deltas[ydi]; - const int mbg = scan_g + yd; - if (mbg < 0) continue; else if (mbg > m_limit) break; - - for (int xdi = 0; xdi < scan_delta_size; xdi++) - { - const int xd = m_pParams->m_pScan_deltas[xdi]; - const int mbr = scan_r + xd; - if (mbr < 0) continue; else if (mbr > m_limit) break; - - etc1_solution_coordinates coords(mbr, mbg, mbb, 0, m_pParams->m_use_color4); - - if (!evaluate_solution(coords, m_trial_solution, &m_best_solution)) - continue; - - if (m_pParams->m_refinement) - { - refine_solution((m_pParams->m_quality == cETCQualityFast) ? 2 : (((xd | yd | zd) == 0) ? 4 : 2)); - } - - } // xdi - } // ydi - } // zdi - } - - void etc1_optimizer::compute_internal_cluster_fit(uint32_t total_perms_to_try) - { - if ((!m_best_solution.m_valid) || ((m_br != m_best_solution.m_coords.m_unscaled_color.r) || (m_bg != m_best_solution.m_coords.m_unscaled_color.g) || (m_bb != m_best_solution.m_coords.m_unscaled_color.b))) - { - evaluate_solution(etc1_solution_coordinates(m_br, m_bg, m_bb, 0, m_pParams->m_use_color4), m_trial_solution, &m_best_solution); - } - - if ((m_best_solution.m_error == 0) || (!m_best_solution.m_valid)) - return; - - for (uint32_t i = 0; i < total_perms_to_try; i++) - { - int delta_sum_r = 0, delta_sum_g = 0, delta_sum_b = 0; - - const int *pInten_table = g_etc1_inten_tables[m_best_solution.m_coords.m_inten_table]; - const color_rgba base_color(m_best_solution.m_coords.get_scaled_color()); - - const uint8_t *pNum_selectors = g_cluster_fit_order_tab[i].m_v; - - for (uint32_t q = 0; q < 4; q++) - { - const int yd_temp = pInten_table[q]; - - delta_sum_r += pNum_selectors[q] * (clamp(base_color.r + yd_temp, 0, 255) - base_color.r); - delta_sum_g += pNum_selectors[q] * (clamp(base_color.g + yd_temp, 0, 255) - base_color.g); - delta_sum_b += pNum_selectors[q] * (clamp(base_color.b + yd_temp, 0, 255) - base_color.b); - } - - if ((!delta_sum_r) && (!delta_sum_g) && (!delta_sum_b)) - continue; - - const float avg_delta_r_f = static_cast(delta_sum_r) / 8; - const float avg_delta_g_f = static_cast(delta_sum_g) / 8; - const float avg_delta_b_f = static_cast(delta_sum_b) / 8; - - const int br1 = clamp(static_cast((m_avg_color[0] - avg_delta_r_f) * m_limit / 255.0f + .5f), 0, m_limit); - const int bg1 = clamp(static_cast((m_avg_color[1] - avg_delta_g_f) * m_limit / 255.0f + .5f), 0, m_limit); - const int bb1 = clamp(static_cast((m_avg_color[2] - avg_delta_b_f) * m_limit / 255.0f + .5f), 0, m_limit); - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Second refinement trial %u, avg_delta %f %f %f\n", i, avg_delta_r_f, avg_delta_g_f, avg_delta_b_f); -#endif - - evaluate_solution(etc1_solution_coordinates(br1, bg1, bb1, 0, m_pParams->m_use_color4), m_trial_solution, &m_best_solution); - - if (m_best_solution.m_error == 0) - break; - } - } - - void etc1_optimizer::init(const params& params, results& result) - { - m_pParams = ¶ms; - m_pResult = &result; - - const uint32_t n = m_pParams->m_num_src_pixels; - - m_selectors.resize(n); - m_best_selectors.resize(n); - m_temp_selectors.resize(n); - m_trial_solution.m_selectors.resize(n); - m_best_solution.m_selectors.resize(n); - - m_limit = m_pParams->m_use_color4 ? 15 : 31; - - vec3F avg_color(0.0f); - - m_luma.resize(n); - m_sorted_luma_indices.resize(n); - m_sorted_luma.resize(n); - - int min_r = 255, min_g = 255, min_b = 255; - int max_r = 0, max_g = 0, max_b = 0; - - for (uint32_t i = 0; i < n; i++) - { - const color_rgba& c = m_pParams->m_pSrc_pixels[i]; - - min_r = basisu::minimum(min_r, c.r); - min_g = basisu::minimum(min_g, c.g); - min_b = basisu::minimum(min_b, c.b); - - max_r = basisu::maximum(max_r, c.r); - max_g = basisu::maximum(max_g, c.g); - max_b = basisu::maximum(max_b, c.b); - - const vec3F fc(c.r, c.g, c.b); - - avg_color += fc; - - m_luma[i] = static_cast(c.r + c.g + c.b); - m_sorted_luma_indices[i] = i; - } - avg_color /= static_cast(n); - m_avg_color = avg_color; - m_max_comp_spread = basisu::maximum(basisu::maximum(max_r - min_r, max_g - min_g), max_b - min_b); - - m_br = clamp(static_cast(m_avg_color[0] * m_limit / 255.0f + .5f), 0, m_limit); - m_bg = clamp(static_cast(m_avg_color[1] * m_limit / 255.0f + .5f), 0, m_limit); - m_bb = clamp(static_cast(m_avg_color[2] * m_limit / 255.0f + .5f), 0, m_limit); - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Avg block color: %u %u %u\n", m_br, m_bg, m_bb); -#endif - - if (m_pParams->m_quality == cETCQualityFast) - { - indirect_sort(n, &m_sorted_luma_indices[0], &m_luma[0]); - - m_pSorted_luma = &m_sorted_luma[0]; - m_pSorted_luma_indices = &m_sorted_luma_indices[0]; - - for (uint32_t i = 0; i < n; i++) - m_pSorted_luma[i] = m_luma[m_pSorted_luma_indices[i]]; - } - - m_best_solution.m_coords.clear(); - m_best_solution.m_valid = false; - m_best_solution.m_error = UINT64_MAX; - - clear_obj(m_solutions_tried); - } - - // Return false if we've probably already tried this solution, true if we have definitely not. - bool etc1_optimizer::check_for_redundant_solution(const etc1_solution_coordinates& coords) - { - // Hash first 3 bytes of color (RGB) - uint32_t kh = hash_hsieh((uint8_t*)&coords.m_unscaled_color.r, 3); - - uint32_t h0 = kh & cSolutionsTriedHashMask; - uint32_t h1 = (kh >> cSolutionsTriedHashBits) & cSolutionsTriedHashMask; - - // Simple Bloom filter lookup with k=2 - if ( ((m_solutions_tried[h0 >> 3] & (1 << (h0 & 7))) != 0) && - ((m_solutions_tried[h1 >> 3] & (1 << (h1 & 7))) != 0) ) - return false; - - m_solutions_tried[h0 >> 3] |= (1 << (h0 & 7)); - m_solutions_tried[h1 >> 3] |= (1 << (h1 & 7)); - - return true; - } - - static uint8_t g_eval_dist_tables[8][256] = - { - // 99% threshold - { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,}, - { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,}, - { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,1,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,}, - { 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,1,1,0,1,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,}, - { 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,0,1,0,0,0,0,0,0,0,0,0,1,0,0,1,}, - { 1,1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,1,0,0,1,0,0,0,0,1,0,1,1,0,1,1,1,1,1,0,1,1,1,0,1,1,0,0,0,1,1,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,}, - { 1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1,0,1,1,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,}, - { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,1,1,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,} - }; - - bool etc1_optimizer::evaluate_solution_slow(const etc1_solution_coordinates& coords, potential_solution& trial_solution, potential_solution* pBest_solution) - { - if (!check_for_redundant_solution(coords)) - return false; - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Eval solution: %u %u %u\n", coords.m_unscaled_color.r, coords.m_unscaled_color.g, coords.m_unscaled_color.b); -#endif - - trial_solution.m_valid = false; - - if (m_pParams->m_constrain_against_base_color5) - { - const int dr = (int)coords.m_unscaled_color.r - (int)m_pParams->m_base_color5.r; - const int dg = (int)coords.m_unscaled_color.g - (int)m_pParams->m_base_color5.g; - const int db = (int)coords.m_unscaled_color.b - (int)m_pParams->m_base_color5.b; - - if ((minimum(dr, dg, db) < cETC1ColorDeltaMin) || (maximum(dr, dg, db) > cETC1ColorDeltaMax)) - { -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Eval failed due to constraint from %u %u %u\n", m_pParams->m_base_color5.r, m_pParams->m_base_color5.g, m_pParams->m_base_color5.b); -#endif - return false; - } - } - - const color_rgba base_color(coords.get_scaled_color()); - - const uint32_t n = m_pParams->m_num_src_pixels; - assert(trial_solution.m_selectors.size() == n); - - trial_solution.m_error = INT64_MAX; - - const uint8_t *pSelectors_to_use = m_pParams->m_pForce_selectors; - - for (uint32_t inten_table = 0; inten_table < cETC1IntenModifierValues; inten_table++) - { - if (m_pParams->m_quality <= cETCQualityMedium) - { - if (!g_eval_dist_tables[inten_table][m_max_comp_spread]) - continue; - } - -#if 0 - if (m_pParams->m_quality <= cETCQualityMedium) - { - // For tables 5-7, if the max component spread falls within certain ranges, skip the inten table. Statistically they are extremely unlikely to result in lower error. - if (inten_table == 7) - { - if (m_max_comp_spread < 42) - continue; - } - else if (inten_table == 6) - { - if ((m_max_comp_spread >= 12) && (m_max_comp_spread <= 31)) - continue; - } - else if (inten_table == 5) - { - if ((m_max_comp_spread >= 13) && (m_max_comp_spread <= 21)) - continue; - } - } -#endif - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - color_rgba block_colors[4]; - for (uint32_t s = 0; s < 4; s++) - { - const int yd = pInten_table[s]; - block_colors[s].set(base_color.r + yd, base_color.g + yd, base_color.b + yd, 255); - } - - uint64_t total_error = 0; - - const color_rgba* pSrc_pixels = m_pParams->m_pSrc_pixels; - - if (!g_cpu_supports_sse41) - { - for (uint32_t c = 0; c < n; c++) - { - const color_rgba& src_pixel = *pSrc_pixels++; - - uint32_t best_selector_index = 0; - uint32_t best_error = 0; - - if (pSelectors_to_use) - { - best_selector_index = pSelectors_to_use[c]; - best_error = color_distance(m_pParams->m_perceptual, src_pixel, block_colors[best_selector_index], false); - } - else - { - best_error = color_distance(m_pParams->m_perceptual, src_pixel, block_colors[0], false); - - uint32_t trial_error = color_distance(m_pParams->m_perceptual, src_pixel, block_colors[1], false); - if (trial_error < best_error) - { - best_error = trial_error; - best_selector_index = 1; - } - - trial_error = color_distance(m_pParams->m_perceptual, src_pixel, block_colors[2], false); - if (trial_error < best_error) - { - best_error = trial_error; - best_selector_index = 2; - } - - trial_error = color_distance(m_pParams->m_perceptual, src_pixel, block_colors[3], false); - if (trial_error < best_error) - { - best_error = trial_error; - best_selector_index = 3; - } - } - - m_temp_selectors[c] = static_cast(best_selector_index); - - total_error += best_error; - if (total_error >= trial_solution.m_error) - break; - } - } - else - { -#if BASISU_SUPPORT_SSE - if (pSelectors_to_use) - { - if (m_pParams->m_perceptual) - perceptual_distance_rgb_4_N_sse41((int64_t*)&total_error, pSelectors_to_use, block_colors, pSrc_pixels, n, trial_solution.m_error); - else - linear_distance_rgb_4_N_sse41((int64_t*)&total_error, pSelectors_to_use, block_colors, pSrc_pixels, n, trial_solution.m_error); - } - else - { - if (m_pParams->m_perceptual) - find_selectors_perceptual_rgb_4_N_sse41((int64_t*)&total_error, &m_temp_selectors[0], block_colors, pSrc_pixels, n, trial_solution.m_error); - else - find_selectors_linear_rgb_4_N_sse41((int64_t*)&total_error, &m_temp_selectors[0], block_colors, pSrc_pixels, n, trial_solution.m_error); - } -#endif - } - - if (total_error < trial_solution.m_error) - { - trial_solution.m_error = total_error; - trial_solution.m_coords.m_inten_table = inten_table; - trial_solution.m_selectors.swap(m_temp_selectors); - trial_solution.m_valid = true; - } - } - trial_solution.m_coords.m_unscaled_color = coords.m_unscaled_color; - trial_solution.m_coords.m_color4 = m_pParams->m_use_color4; - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Eval done: %u error: %I64u best error so far: %I64u\n", (trial_solution.m_error < pBest_solution->m_error), trial_solution.m_error, pBest_solution->m_error); -#endif - - bool success = false; - if (pBest_solution) - { - if (trial_solution.m_error < pBest_solution->m_error) - { - *pBest_solution = trial_solution; - success = true; - } - } - - return success; - } - - bool etc1_optimizer::evaluate_solution_fast(const etc1_solution_coordinates& coords, potential_solution& trial_solution, potential_solution* pBest_solution) - { - if (!check_for_redundant_solution(coords)) - return false; - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Eval solution fast: %u %u %u\n", coords.m_unscaled_color.r, coords.m_unscaled_color.g, coords.m_unscaled_color.b); -#endif - - if (m_pParams->m_constrain_against_base_color5) - { - const int dr = (int)coords.m_unscaled_color.r - (int)m_pParams->m_base_color5.r; - const int dg = (int)coords.m_unscaled_color.g - (int)m_pParams->m_base_color5.g; - const int db = (int)coords.m_unscaled_color.b - (int)m_pParams->m_base_color5.b; - - if ((minimum(dr, dg, db) < cETC1ColorDeltaMin) || (maximum(dr, dg, db) > cETC1ColorDeltaMax)) - { - trial_solution.m_valid = false; - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Eval failed due to constraint from %u %u %u\n", m_pParams->m_base_color5.r, m_pParams->m_base_color5.g, m_pParams->m_base_color5.b); -#endif - return false; - } - } - - const color_rgba base_color(coords.get_scaled_color()); - - const uint32_t n = m_pParams->m_num_src_pixels; - assert(trial_solution.m_selectors.size() == n); - - trial_solution.m_error = UINT64_MAX; - - const bool perceptual = (m_pParams->m_quality == cETCQualityFast) ? false : m_pParams->m_perceptual; - - for (int inten_table = cETC1IntenModifierValues - 1; inten_table >= 0; --inten_table) - { - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - uint32_t block_inten[4]; - color_rgba block_colors[4]; - for (uint32_t s = 0; s < 4; s++) - { - const int yd = pInten_table[s]; - color_rgba block_color(base_color.r + yd, base_color.g + yd, base_color.b + yd, 255); - block_colors[s] = block_color; - block_inten[s] = block_color.r + block_color.g + block_color.b; - } - - // evaluate_solution_fast() enforces/assumes a total ordering of the input colors along the intensity (1,1,1) axis to more quickly classify the inputs to selectors. - // The inputs colors have been presorted along the projection onto this axis, and ETC1 block colors are always ordered along the intensity axis, so this classification is fast. - // 0 1 2 3 - // 01 12 23 - const uint32_t block_inten_midpoints[3] = { block_inten[0] + block_inten[1], block_inten[1] + block_inten[2], block_inten[2] + block_inten[3] }; - - uint64_t total_error = 0; - const color_rgba* pSrc_pixels = m_pParams->m_pSrc_pixels; - - if (perceptual) - { - if ((m_pSorted_luma[n - 1] * 2) < block_inten_midpoints[0]) - { - if (block_inten[0] > m_pSorted_luma[n - 1]) - { - const uint32_t min_error = iabs((int)block_inten[0] - (int)m_pSorted_luma[n - 1]); - if (min_error >= trial_solution.m_error) - continue; - } - - memset(&m_temp_selectors[0], 0, n); - - for (uint32_t c = 0; c < n; c++) - total_error += color_distance(true, block_colors[0], pSrc_pixels[c], false); - } - else if ((m_pSorted_luma[0] * 2) >= block_inten_midpoints[2]) - { - if (m_pSorted_luma[0] > block_inten[3]) - { - const uint32_t min_error = iabs((int)m_pSorted_luma[0] - (int)block_inten[3]); - if (min_error >= trial_solution.m_error) - continue; - } - - memset(&m_temp_selectors[0], 3, n); - - for (uint32_t c = 0; c < n; c++) - total_error += color_distance(true, block_colors[3], pSrc_pixels[c], false); - } - else - { - if (!g_cpu_supports_sse41) - { - uint32_t cur_selector = 0, c; - for (c = 0; c < n; c++) - { - const uint32_t y = m_pSorted_luma[c]; - while ((y * 2) >= block_inten_midpoints[cur_selector]) - if (++cur_selector > 2) - goto done; - const uint32_t sorted_pixel_index = m_pSorted_luma_indices[c]; - m_temp_selectors[sorted_pixel_index] = static_cast(cur_selector); - total_error += color_distance(true, block_colors[cur_selector], pSrc_pixels[sorted_pixel_index], false); - } - done: - while (c < n) - { - const uint32_t sorted_pixel_index = m_pSorted_luma_indices[c]; - m_temp_selectors[sorted_pixel_index] = 3; - total_error += color_distance(true, block_colors[3], pSrc_pixels[sorted_pixel_index], false); - ++c; - } - } - else - { -#if BASISU_SUPPORT_SSE - uint32_t cur_selector = 0, c; - - for (c = 0; c < n; c++) - { - const uint32_t y = m_pSorted_luma[c]; - while ((y * 2) >= block_inten_midpoints[cur_selector]) - { - if (++cur_selector > 2) - goto done3; - } - const uint32_t sorted_pixel_index = m_pSorted_luma_indices[c]; - m_temp_selectors[sorted_pixel_index] = static_cast(cur_selector); - } - done3: - - while (c < n) - { - const uint32_t sorted_pixel_index = m_pSorted_luma_indices[c]; - m_temp_selectors[sorted_pixel_index] = 3; - ++c; - } - - int64_t block_error; - perceptual_distance_rgb_4_N_sse41(&block_error, &m_temp_selectors[0], block_colors, pSrc_pixels, n, INT64_MAX); - total_error += block_error; -#endif - } - } - } - else - { - if ((m_pSorted_luma[n - 1] * 2) < block_inten_midpoints[0]) - { - if (block_inten[0] > m_pSorted_luma[n - 1]) - { - const uint32_t min_error = iabs((int)block_inten[0] - (int)m_pSorted_luma[n - 1]); - if (min_error >= trial_solution.m_error) - continue; - } - - memset(&m_temp_selectors[0], 0, n); - - for (uint32_t c = 0; c < n; c++) - total_error += color_distance(block_colors[0], pSrc_pixels[c], false); - } - else if ((m_pSorted_luma[0] * 2) >= block_inten_midpoints[2]) - { - if (m_pSorted_luma[0] > block_inten[3]) - { - const uint32_t min_error = iabs((int)m_pSorted_luma[0] - (int)block_inten[3]); - if (min_error >= trial_solution.m_error) - continue; - } - - memset(&m_temp_selectors[0], 3, n); - - for (uint32_t c = 0; c < n; c++) - total_error += color_distance(block_colors[3], pSrc_pixels[c], false); - } - else - { - uint32_t cur_selector = 0, c; - for (c = 0; c < n; c++) - { - const uint32_t y = m_pSorted_luma[c]; - while ((y * 2) >= block_inten_midpoints[cur_selector]) - if (++cur_selector > 2) - goto done2; - const uint32_t sorted_pixel_index = m_pSorted_luma_indices[c]; - m_temp_selectors[sorted_pixel_index] = static_cast(cur_selector); - total_error += color_distance(block_colors[cur_selector], pSrc_pixels[sorted_pixel_index], false); - } - done2: - while (c < n) - { - const uint32_t sorted_pixel_index = m_pSorted_luma_indices[c]; - m_temp_selectors[sorted_pixel_index] = 3; - total_error += color_distance(block_colors[3], pSrc_pixels[sorted_pixel_index], false); - ++c; - } - } - } - - if (total_error < trial_solution.m_error) - { - trial_solution.m_error = total_error; - trial_solution.m_coords.m_inten_table = inten_table; - trial_solution.m_selectors.swap(m_temp_selectors); - trial_solution.m_valid = true; - if (!total_error) - break; - } - } - trial_solution.m_coords.m_unscaled_color = coords.m_unscaled_color; - trial_solution.m_coords.m_color4 = m_pParams->m_use_color4; - -#if BASISU_DEBUG_ETC_ENCODER_DEEPER - printf("Eval done: %u error: %I64u best error so far: %I64u\n", (trial_solution.m_error < pBest_solution->m_error), trial_solution.m_error, pBest_solution->m_error); -#endif - - bool success = false; - if (pBest_solution) - { - if (trial_solution.m_error < pBest_solution->m_error) - { - *pBest_solution = trial_solution; - success = true; - } - } - - return success; - } - - uint64_t pack_eac_a8(pack_eac_a8_results& results, const uint8_t* pPixels, uint32_t num_pixels, uint32_t base_search_rad, uint32_t mul_search_rad, uint32_t table_mask) - { - results.m_selectors.resize(num_pixels); - results.m_selectors_temp.resize(num_pixels); - - uint32_t min_alpha = 255, max_alpha = 0; - for (uint32_t i = 0; i < num_pixels; i++) - { - const uint32_t a = pPixels[i]; - if (a < min_alpha) min_alpha = a; - if (a > max_alpha) max_alpha = a; - } - - if (min_alpha == max_alpha) - { - results.m_base = min_alpha; - results.m_table = 13; - results.m_multiplier = 1; - for (uint32_t i = 0; i < num_pixels; i++) - results.m_selectors[i] = 4; - return 0; - } - - const uint32_t alpha_range = max_alpha - min_alpha; - - uint64_t best_err = UINT64_MAX; - - for (uint32_t table = 0; table < 16; table++) - { - if ((table_mask & (1U << table)) == 0) - continue; - - const float range = (float)(g_etc2_eac_tables[table][ETC2_EAC_MAX_VALUE_SELECTOR] - g_etc2_eac_tables[table][ETC2_EAC_MIN_VALUE_SELECTOR]); - const int center = (int)roundf(lerp((float)min_alpha, (float)max_alpha, (float)(0 - g_etc2_eac_tables[table][ETC2_EAC_MIN_VALUE_SELECTOR]) / range)); - - const int base_min = clamp255(center - base_search_rad); - const int base_max = clamp255(center + base_search_rad); - - const int mul = (int)roundf(alpha_range / range); - const int mul_low = clamp(mul - mul_search_rad, 1, 15); - const int mul_high = clamp(mul + mul_search_rad, 1, 15); - - for (int base = base_min; base <= base_max; base++) - { - for (int multiplier = mul_low; multiplier <= mul_high; multiplier++) - { - uint64_t total_err = 0; - - for (uint32_t i = 0; i < num_pixels; i++) - { - const int a = pPixels[i]; - - uint32_t best_s_err = UINT32_MAX; - uint32_t best_s = 0; - for (uint32_t s = 0; s < 8; s++) - { - const int v = clamp255((int)multiplier * g_etc2_eac_tables[table][s] + (int)base); - - uint32_t err = iabs(a - v); - if (err < best_s_err) - { - best_s_err = err; - best_s = s; - } - } - - results.m_selectors_temp[i] = static_cast(best_s); - - total_err += best_s_err * best_s_err; - if (total_err >= best_err) - break; - } - - if (total_err < best_err) - { - best_err = total_err; - results.m_base = base; - results.m_multiplier = multiplier; - results.m_table = table; - results.m_selectors.swap(results.m_selectors_temp); - if (!best_err) - return best_err; - } - - } // table - - } // multiplier - - } // base - - return best_err; - } - - void pack_eac_a8(eac_a8_block* pBlock, const uint8_t* pPixels, uint32_t base_search_rad, uint32_t mul_search_rad, uint32_t table_mask) - { - pack_eac_a8_results results; - pack_eac_a8(results, pPixels, 16, base_search_rad, mul_search_rad, table_mask); - - pBlock->m_base = results.m_base; - pBlock->m_multiplier = results.m_multiplier; - pBlock->m_table = results.m_table; - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - pBlock->set_selector(x, y, results.m_selectors[x + y * 4]); - } - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_etc.h b/WickedEngine/Utility/basis_universal/encoder/basisu_etc.h deleted file mode 100644 index 208f2aac1..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_etc.h +++ /dev/null @@ -1,1181 +0,0 @@ -// basis_etc.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "../transcoder/basisu.h" -#include "basisu_enc.h" - -namespace basisu -{ - enum etc_constants - { - cETC1BytesPerBlock = 8U, - - cETC1SelectorBits = 2U, - cETC1SelectorValues = 1U << cETC1SelectorBits, - cETC1SelectorMask = cETC1SelectorValues - 1U, - - cETC1BlockShift = 2U, - cETC1BlockSize = 1U << cETC1BlockShift, - - cETC1LSBSelectorIndicesBitOffset = 0, - cETC1MSBSelectorIndicesBitOffset = 16, - - cETC1FlipBitOffset = 32, - cETC1DiffBitOffset = 33, - - cETC1IntenModifierNumBits = 3, - cETC1IntenModifierValues = 1 << cETC1IntenModifierNumBits, - cETC1RightIntenModifierTableBitOffset = 34, - cETC1LeftIntenModifierTableBitOffset = 37, - - // Base+Delta encoding (5 bit bases, 3 bit delta) - cETC1BaseColorCompNumBits = 5, - cETC1BaseColorCompMax = 1 << cETC1BaseColorCompNumBits, - - cETC1DeltaColorCompNumBits = 3, - cETC1DeltaColorComp = 1 << cETC1DeltaColorCompNumBits, - cETC1DeltaColorCompMax = 1 << cETC1DeltaColorCompNumBits, - - cETC1BaseColor5RBitOffset = 59, - cETC1BaseColor5GBitOffset = 51, - cETC1BaseColor5BBitOffset = 43, - - cETC1DeltaColor3RBitOffset = 56, - cETC1DeltaColor3GBitOffset = 48, - cETC1DeltaColor3BBitOffset = 40, - - // Absolute (non-delta) encoding (two 4-bit per component bases) - cETC1AbsColorCompNumBits = 4, - cETC1AbsColorCompMax = 1 << cETC1AbsColorCompNumBits, - - cETC1AbsColor4R1BitOffset = 60, - cETC1AbsColor4G1BitOffset = 52, - cETC1AbsColor4B1BitOffset = 44, - - cETC1AbsColor4R2BitOffset = 56, - cETC1AbsColor4G2BitOffset = 48, - cETC1AbsColor4B2BitOffset = 40, - - cETC1ColorDeltaMin = -4, - cETC1ColorDeltaMax = 3, - - // Delta3: - // 0 1 2 3 4 5 6 7 - // 000 001 010 011 100 101 110 111 - // 0 1 2 3 -4 -3 -2 -1 - }; - - extern const int g_etc1_inten_tables[cETC1IntenModifierValues][cETC1SelectorValues]; - extern const uint8_t g_etc1_to_selector_index[cETC1SelectorValues]; - extern const uint8_t g_selector_index_to_etc1[cETC1SelectorValues]; - - struct etc_coord2 - { - uint8_t m_x, m_y; - }; - extern const etc_coord2 g_etc1_pixel_coords[2][2][8]; // [flipped][subblock][subblock_pixel] - extern const uint32_t g_etc1_pixel_indices[2][2][8]; // [flipped][subblock][subblock_pixel] - - struct etc_block - { - // big endian uint64: - // bit ofs: 56 48 40 32 24 16 8 0 - // byte ofs: b0, b1, b2, b3, b4, b5, b6, b7 - union - { - uint64_t m_uint64; - - uint8_t m_bytes[8]; - }; - - inline void clear() - { - assert(sizeof(*this) == 8); - clear_obj(*this); - } - - inline uint64_t get_all_bits() const - { - return read_be64(&m_uint64); - } - - inline uint32_t get_general_bits(uint32_t ofs, uint32_t num) const - { - assert((ofs + num) <= 64U); - assert(num && (num < 32U)); - return (uint32_t)(read_be64(&m_uint64) >> ofs) & ((1UL << num) - 1UL); - } - - inline void set_general_bits(uint32_t ofs, uint32_t num, uint32_t bits) - { - assert((ofs + num) <= 64U); - assert(num && (num < 32U)); - - uint64_t x = read_be64(&m_uint64); - uint64_t msk = ((1ULL << static_cast(num)) - 1ULL) << static_cast(ofs); - x &= ~msk; - x |= (static_cast(bits) << static_cast(ofs)); - write_be64(&m_uint64, x); - } - - inline uint32_t get_byte_bits(uint32_t ofs, uint32_t num) const - { - assert((ofs + num) <= 64U); - assert(num && (num <= 8U)); - assert((ofs >> 3) == ((ofs + num - 1) >> 3)); - const uint32_t byte_ofs = 7 - (ofs >> 3); - const uint32_t byte_bit_ofs = ofs & 7; - return (m_bytes[byte_ofs] >> byte_bit_ofs) & ((1 << num) - 1); - } - - inline void set_byte_bits(uint32_t ofs, uint32_t num, uint32_t bits) - { - assert((ofs + num) <= 64U); - assert(num && (num < 32U)); - assert((ofs >> 3) == ((ofs + num - 1) >> 3)); - assert(bits < (1U << num)); - const uint32_t byte_ofs = 7 - (ofs >> 3); - const uint32_t byte_bit_ofs = ofs & 7; - const uint32_t mask = (1 << num) - 1; - m_bytes[byte_ofs] &= ~(mask << byte_bit_ofs); - m_bytes[byte_ofs] |= (bits << byte_bit_ofs); - } - - // false = left/right subblocks - // true = upper/lower subblocks - inline bool get_flip_bit() const - { - return (m_bytes[3] & 1) != 0; - } - - inline void set_flip_bit(bool flip) - { - m_bytes[3] &= ~1; - m_bytes[3] |= static_cast(flip); - } - - inline bool get_diff_bit() const - { - return (m_bytes[3] & 2) != 0; - } - - inline void set_diff_bit(bool diff) - { - m_bytes[3] &= ~2; - m_bytes[3] |= (static_cast(diff) << 1); - } - - // Returns intensity modifier table (0-7) used by subblock subblock_id. - // subblock_id=0 left/top (CW 1), 1=right/bottom (CW 2) - inline uint32_t get_inten_table(uint32_t subblock_id) const - { - assert(subblock_id < 2); - const uint32_t ofs = subblock_id ? 2 : 5; - return (m_bytes[3] >> ofs) & 7; - } - - // Sets intensity modifier table (0-7) used by subblock subblock_id (0 or 1) - inline void set_inten_table(uint32_t subblock_id, uint32_t t) - { - assert(subblock_id < 2); - assert(t < 8); - const uint32_t ofs = subblock_id ? 2 : 5; - m_bytes[3] &= ~(7 << ofs); - m_bytes[3] |= (t << ofs); - } - - inline void set_inten_tables_etc1s(uint32_t t) - { - set_inten_table(0, t); - set_inten_table(1, t); - } - - inline bool is_etc1s() const - { - if (get_inten_table(0) != get_inten_table(1)) - return false; - - if (get_diff_bit()) - { - if (get_delta3_color() != 0) - return false; - } - else - { - if (get_base4_color(0) != get_base4_color(1)) - return false; - } - - return true; - } - - // Returned encoded selector value ranges from 0-3 (this is NOT a direct index into g_etc1_inten_tables, see get_selector()) - inline uint32_t get_raw_selector(uint32_t x, uint32_t y) const - { - assert((x | y) < 4); - - const uint32_t bit_index = x * 4 + y; - const uint32_t byte_bit_ofs = bit_index & 7; - const uint8_t *p = &m_bytes[7 - (bit_index >> 3)]; - const uint32_t lsb = (p[0] >> byte_bit_ofs) & 1; - const uint32_t msb = (p[-2] >> byte_bit_ofs) & 1; - const uint32_t val = lsb | (msb << 1); - - return val; - } - - // Returned selector value ranges from 0-3 and is a direct index into g_etc1_inten_tables. - inline uint32_t get_selector(uint32_t x, uint32_t y) const - { - return g_etc1_to_selector_index[get_raw_selector(x, y)]; - } - - // Selector "val" ranges from 0-3 and is a direct index into g_etc1_inten_tables. - inline void set_selector(uint32_t x, uint32_t y, uint32_t val) - { - assert((x | y | val) < 4); - const uint32_t bit_index = x * 4 + y; - - uint8_t *p = &m_bytes[7 - (bit_index >> 3)]; - - const uint32_t byte_bit_ofs = bit_index & 7; - const uint32_t mask = 1 << byte_bit_ofs; - - const uint32_t etc1_val = g_selector_index_to_etc1[val]; - - const uint32_t lsb = etc1_val & 1; - const uint32_t msb = etc1_val >> 1; - - p[0] &= ~mask; - p[0] |= (lsb << byte_bit_ofs); - - p[-2] &= ~mask; - p[-2] |= (msb << byte_bit_ofs); - } - - // Selector "etc1_val" ranges from 0-3 and is a direct (raw) ETC1 selector. - inline void set_raw_selector(uint32_t x, uint32_t y, uint32_t etc1_val) - { - assert((x | y | etc1_val) < 4); - const uint32_t bit_index = x * 4 + y; - - uint8_t* p = &m_bytes[7 - (bit_index >> 3)]; - - const uint32_t byte_bit_ofs = bit_index & 7; - const uint32_t mask = 1 << byte_bit_ofs; - - const uint32_t lsb = etc1_val & 1; - const uint32_t msb = etc1_val >> 1; - - p[0] &= ~mask; - p[0] |= (lsb << byte_bit_ofs); - - p[-2] &= ~mask; - p[-2] |= (msb << byte_bit_ofs); - } - - inline uint32_t get_raw_selector_bits() const - { - return m_bytes[4] | (m_bytes[5] << 8) | (m_bytes[6] << 16) | (m_bytes[7] << 24); - } - - inline void set_raw_selector_bits(uint32_t bits) - { - m_bytes[4] = static_cast(bits); - m_bytes[5] = static_cast(bits >> 8); - m_bytes[6] = static_cast(bits >> 16); - m_bytes[7] = static_cast(bits >> 24); - } - - inline void set_raw_selector_bits(uint8_t byte0, uint8_t byte1, uint8_t byte2, uint8_t byte3) - { - m_bytes[4] = byte0; - m_bytes[5] = byte1; - m_bytes[6] = byte2; - m_bytes[7] = byte3; - } - - inline void set_base4_color(uint32_t idx, uint16_t c) - { - if (idx) - { - set_byte_bits(cETC1AbsColor4R2BitOffset, 4, (c >> 8) & 15); - set_byte_bits(cETC1AbsColor4G2BitOffset, 4, (c >> 4) & 15); - set_byte_bits(cETC1AbsColor4B2BitOffset, 4, c & 15); - } - else - { - set_byte_bits(cETC1AbsColor4R1BitOffset, 4, (c >> 8) & 15); - set_byte_bits(cETC1AbsColor4G1BitOffset, 4, (c >> 4) & 15); - set_byte_bits(cETC1AbsColor4B1BitOffset, 4, c & 15); - } - } - - inline uint16_t get_base4_color(uint32_t idx) const - { - uint32_t r, g, b; - if (idx) - { - r = get_byte_bits(cETC1AbsColor4R2BitOffset, 4); - g = get_byte_bits(cETC1AbsColor4G2BitOffset, 4); - b = get_byte_bits(cETC1AbsColor4B2BitOffset, 4); - } - else - { - r = get_byte_bits(cETC1AbsColor4R1BitOffset, 4); - g = get_byte_bits(cETC1AbsColor4G1BitOffset, 4); - b = get_byte_bits(cETC1AbsColor4B1BitOffset, 4); - } - return static_cast(b | (g << 4U) | (r << 8U)); - } - - inline void set_base5_color(uint16_t c) - { - set_byte_bits(cETC1BaseColor5RBitOffset, 5, (c >> 10) & 31); - set_byte_bits(cETC1BaseColor5GBitOffset, 5, (c >> 5) & 31); - set_byte_bits(cETC1BaseColor5BBitOffset, 5, c & 31); - } - - inline uint16_t get_base5_color() const - { - const uint32_t r = get_byte_bits(cETC1BaseColor5RBitOffset, 5); - const uint32_t g = get_byte_bits(cETC1BaseColor5GBitOffset, 5); - const uint32_t b = get_byte_bits(cETC1BaseColor5BBitOffset, 5); - return static_cast(b | (g << 5U) | (r << 10U)); - } - - void set_delta3_color(uint16_t c) - { - set_byte_bits(cETC1DeltaColor3RBitOffset, 3, (c >> 6) & 7); - set_byte_bits(cETC1DeltaColor3GBitOffset, 3, (c >> 3) & 7); - set_byte_bits(cETC1DeltaColor3BBitOffset, 3, c & 7); - } - - inline uint16_t get_delta3_color() const - { - const uint32_t r = get_byte_bits(cETC1DeltaColor3RBitOffset, 3); - const uint32_t g = get_byte_bits(cETC1DeltaColor3GBitOffset, 3); - const uint32_t b = get_byte_bits(cETC1DeltaColor3BBitOffset, 3); - return static_cast(b | (g << 3U) | (r << 6U)); - } - - uint64_t determine_selectors(const color_rgba* pSource_pixels, bool perceptual, uint32_t begin_subblock = 0, uint32_t end_subblock = 2) - { - uint64_t total_error = 0; - - for (uint32_t subblock = begin_subblock; subblock < end_subblock; subblock++) - { - color_rgba block_colors[4]; - get_block_colors(block_colors, subblock); - - if (get_flip_bit()) - { - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t best_selector = 0; - uint64_t best_error = UINT64_MAX; - - for (uint32_t s = 0; s < 4; s++) - { - uint64_t err = color_distance(perceptual, block_colors[s], pSource_pixels[x + (subblock * 2 + y) * 4], false); - if (err < best_error) - { - best_error = err; - best_selector = s; - } - } - - set_selector(x, subblock * 2 + y, best_selector); - - total_error += best_error; - } - } - } - else - { - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - uint32_t best_selector = 0; - uint64_t best_error = UINT64_MAX; - - for (uint32_t s = 0; s < 4; s++) - { - uint64_t err = color_distance(perceptual, block_colors[s], pSource_pixels[(subblock * 2) + x + y * 4], false); - if (err < best_error) - { - best_error = err; - best_selector = s; - } - } - - set_selector(subblock * 2 + x, y, best_selector); - - total_error += best_error; - } - } - } - } - - return total_error; - } - - color_rgba get_block_color(uint32_t subblock_index, bool scaled) const - { - color_rgba b; - - if (get_diff_bit()) - { - if (subblock_index) - unpack_color5(b, get_base5_color(), get_delta3_color(), scaled); - else - unpack_color5(b, get_base5_color(), scaled); - } - else - { - b = unpack_color4(get_base4_color(subblock_index), scaled); - } - - return b; - } - - uint32_t get_subblock_index(uint32_t x, uint32_t y) const - { - if (get_flip_bit()) - return y >= 2; - else - return x >= 2; - } - - bool get_block_colors(color_rgba* pBlock_colors, uint32_t subblock_index) const - { - color_rgba b; - - if (get_diff_bit()) - { - if (subblock_index) - unpack_color5(b, get_base5_color(), get_delta3_color(), true); - else - unpack_color5(b, get_base5_color(), true); - } - else - { - b = unpack_color4(get_base4_color(subblock_index), true); - } - - const int* pInten_table = g_etc1_inten_tables[get_inten_table(subblock_index)]; - - bool dc = false; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0], dc), clamp255(b.g + pInten_table[0], dc), clamp255(b.b + pInten_table[0], dc), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[1], dc), clamp255(b.g + pInten_table[1], dc), clamp255(b.b + pInten_table[1], dc), 255); - pBlock_colors[2].set(clamp255(b.r + pInten_table[2], dc), clamp255(b.g + pInten_table[2], dc), clamp255(b.b + pInten_table[2], dc), 255); - pBlock_colors[3].set(clamp255(b.r + pInten_table[3], dc), clamp255(b.g + pInten_table[3], dc), clamp255(b.b + pInten_table[3], dc), 255); - - return dc; - } - - void get_block_colors_etc1s(color_rgba* pBlock_colors) const - { - color_rgba b; - - unpack_color5(b, get_base5_color(), true); - - const int* pInten_table = g_etc1_inten_tables[get_inten_table(0)]; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0]), clamp255(b.g + pInten_table[0]), clamp255(b.b + pInten_table[0]), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[1]), clamp255(b.g + pInten_table[1]), clamp255(b.b + pInten_table[1]), 255); - pBlock_colors[2].set(clamp255(b.r + pInten_table[2]), clamp255(b.g + pInten_table[2]), clamp255(b.b + pInten_table[2]), 255); - pBlock_colors[3].set(clamp255(b.r + pInten_table[3]), clamp255(b.g + pInten_table[3]), clamp255(b.b + pInten_table[3]), 255); - } - - static void get_block_colors_etc1s(color_rgba* pBlock_colors, const color_rgba &base5_color, uint32_t inten_table) - { - color_rgba b; - b.r = (base5_color.r << 3U) | (base5_color.r >> 2U); - b.g = (base5_color.g << 3U) | (base5_color.g >> 2U); - b.b = (base5_color.b << 3U) | (base5_color.b >> 2U); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0]), clamp255(b.g + pInten_table[0]), clamp255(b.b + pInten_table[0]), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[1]), clamp255(b.g + pInten_table[1]), clamp255(b.b + pInten_table[1]), 255); - pBlock_colors[2].set(clamp255(b.r + pInten_table[2]), clamp255(b.g + pInten_table[2]), clamp255(b.b + pInten_table[2]), 255); - pBlock_colors[3].set(clamp255(b.r + pInten_table[3]), clamp255(b.g + pInten_table[3]), clamp255(b.b + pInten_table[3]), 255); - } - - void get_block_color(color_rgba& color, uint32_t subblock_index, uint32_t selector_index) const - { - color_rgba b; - - if (get_diff_bit()) - { - if (subblock_index) - unpack_color5(b, get_base5_color(), get_delta3_color(), true); - else - unpack_color5(b, get_base5_color(), true); - } - else - { - b = unpack_color4(get_base4_color(subblock_index), true); - } - - const int* pInten_table = g_etc1_inten_tables[get_inten_table(subblock_index)]; - - color.set(clamp255(b.r + pInten_table[selector_index]), clamp255(b.g + pInten_table[selector_index]), clamp255(b.b + pInten_table[selector_index]), 255); - } - - bool get_block_low_high_colors(color_rgba* pBlock_colors, uint32_t subblock_index) const - { - color_rgba b; - - if (get_diff_bit()) - { - if (subblock_index) - unpack_color5(b, get_base5_color(), get_delta3_color(), true); - else - unpack_color5(b, get_base5_color(), true); - } - else - { - b = unpack_color4(get_base4_color(subblock_index), true); - } - - const int* pInten_table = g_etc1_inten_tables[get_inten_table(subblock_index)]; - - bool dc = false; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0], dc), clamp255(b.g + pInten_table[0], dc), clamp255(b.b + pInten_table[0], dc), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[3], dc), clamp255(b.g + pInten_table[3], dc), clamp255(b.b + pInten_table[3], dc), 255); - - return dc; - } - - static void get_block_colors5(color_rgba *pBlock_colors, const color_rgba &base_color5, uint32_t inten_table, bool scaled = false) - { - color_rgba b(base_color5); - - if (!scaled) - { - b.r = (b.r << 3) | (b.r >> 2); - b.g = (b.g << 3) | (b.g >> 2); - b.b = (b.b << 3) | (b.b >> 2); - } - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0]), clamp255(b.g + pInten_table[0]), clamp255(b.b + pInten_table[0]), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[1]), clamp255(b.g + pInten_table[1]), clamp255(b.b + pInten_table[1]), 255); - pBlock_colors[2].set(clamp255(b.r + pInten_table[2]), clamp255(b.g + pInten_table[2]), clamp255(b.b + pInten_table[2]), 255); - pBlock_colors[3].set(clamp255(b.r + pInten_table[3]), clamp255(b.g + pInten_table[3]), clamp255(b.b + pInten_table[3]), 255); - } - - static void get_block_colors4(color_rgba *pBlock_colors, const color_rgba &base_color4, uint32_t inten_table, bool scaled = false) - { - color_rgba b(base_color4); - - if (!scaled) - { - b.r = (b.r << 4) | b.r; - b.g = (b.g << 4) | b.g; - b.b = (b.b << 4) | b.b; - } - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0]), clamp255(b.g + pInten_table[0]), clamp255(b.b + pInten_table[0]), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[1]), clamp255(b.g + pInten_table[1]), clamp255(b.b + pInten_table[1]), 255); - pBlock_colors[2].set(clamp255(b.r + pInten_table[2]), clamp255(b.g + pInten_table[2]), clamp255(b.b + pInten_table[2]), 255); - pBlock_colors[3].set(clamp255(b.r + pInten_table[3]), clamp255(b.g + pInten_table[3]), clamp255(b.b + pInten_table[3]), 255); - } - - uint64_t evaluate_etc1_error(const color_rgba* pBlock_pixels, bool perceptual, int subblock_index = -1) const; - void get_subblock_pixels(color_rgba* pPixels, int subblock_index = -1) const; - - void get_selector_range(uint32_t& low, uint32_t& high) const - { - low = 3; - high = 0; - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t s = get_selector(x, y); - low = minimum(low, s); - high = maximum(high, s); - } - } - } - - void set_block_color4(const color_rgba &c0_unscaled, const color_rgba &c1_unscaled) - { - set_diff_bit(false); - - set_base4_color(0, pack_color4(c0_unscaled, false)); - set_base4_color(1, pack_color4(c1_unscaled, false)); - } - - void set_block_color5(const color_rgba &c0_unscaled, const color_rgba &c1_unscaled) - { - set_diff_bit(true); - - set_base5_color(pack_color5(c0_unscaled, false)); - - int dr = c1_unscaled.r - c0_unscaled.r; - int dg = c1_unscaled.g - c0_unscaled.g; - int db = c1_unscaled.b - c0_unscaled.b; - - set_delta3_color(pack_delta3(dr, dg, db)); - } - - void set_block_color5_etc1s(const color_rgba &c_unscaled) - { - set_diff_bit(true); - - set_base5_color(pack_color5(c_unscaled, false)); - set_delta3_color(pack_delta3(0, 0, 0)); - } - - bool set_block_color5_check(const color_rgba &c0_unscaled, const color_rgba &c1_unscaled) - { - set_diff_bit(true); - - set_base5_color(pack_color5(c0_unscaled, false)); - - int dr = c1_unscaled.r - c0_unscaled.r; - int dg = c1_unscaled.g - c0_unscaled.g; - int db = c1_unscaled.b - c0_unscaled.b; - - if (((dr < cETC1ColorDeltaMin) || (dr > cETC1ColorDeltaMax)) || - ((dg < cETC1ColorDeltaMin) || (dg > cETC1ColorDeltaMax)) || - ((db < cETC1ColorDeltaMin) || (db > cETC1ColorDeltaMax))) - return false; - - set_delta3_color(pack_delta3(dr, dg, db)); - - return true; - } - - bool set_block_color5_clamp(const color_rgba &c0_unscaled, const color_rgba &c1_unscaled) - { - set_diff_bit(true); - set_base5_color(pack_color5(c0_unscaled, false)); - - int dr = c1_unscaled.r - c0_unscaled.r; - int dg = c1_unscaled.g - c0_unscaled.g; - int db = c1_unscaled.b - c0_unscaled.b; - - dr = clamp(dr, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - dg = clamp(dg, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - db = clamp(db, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - - set_delta3_color(pack_delta3(dr, dg, db)); - - return true; - } - color_rgba get_selector_color(uint32_t x, uint32_t y, uint32_t s) const - { - color_rgba block_colors[4]; - - get_block_colors(block_colors, get_subblock_index(x, y)); - - return block_colors[s]; - } - - // Base color 5 - static uint16_t pack_color5(const color_rgba& color, bool scaled, uint32_t bias = 127U); - static uint16_t pack_color5(uint32_t r, uint32_t g, uint32_t b, bool scaled, uint32_t bias = 127U); - - static color_rgba unpack_color5(uint16_t packed_color5, bool scaled, uint32_t alpha = 255U); - static void unpack_color5(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color, bool scaled); - static void unpack_color5(color_rgba& result, uint16_t packed_color5, bool scaled); - - static bool unpack_color5(color_rgba& result, uint16_t packed_color5, uint16_t packed_delta3, bool scaled, uint32_t alpha = 255U); - static bool unpack_color5(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color5, uint16_t packed_delta3, bool scaled, uint32_t alpha = 255U); - - // Delta color 3 - // Inputs range from -4 to 3 (cETC1ColorDeltaMin to cETC1ColorDeltaMax) - static uint16_t pack_delta3(const color_rgba_i16& color); - static uint16_t pack_delta3(int r, int g, int b); - - // Results range from -4 to 3 (cETC1ColorDeltaMin to cETC1ColorDeltaMax) - static color_rgba_i16 unpack_delta3(uint16_t packed_delta3); - static void unpack_delta3(int& r, int& g, int& b, uint16_t packed_delta3); - - static bool try_pack_color5_delta3(const color_rgba *pColor5_unscaled) - { - int dr = pColor5_unscaled[1].r - pColor5_unscaled[0].r; - int dg = pColor5_unscaled[1].g - pColor5_unscaled[0].g; - int db = pColor5_unscaled[1].b - pColor5_unscaled[0].b; - - if ((minimum(dr, dg, db) < cETC1ColorDeltaMin) || (maximum(dr, dg, db) > cETC1ColorDeltaMax)) - return false; - - return true; - } - - // Abs color 4 - static uint16_t pack_color4(const color_rgba& color, bool scaled, uint32_t bias = 127U); - static uint16_t pack_color4(uint32_t r, uint32_t g, uint32_t b, bool scaled, uint32_t bias = 127U); - - static color_rgba unpack_color4(uint16_t packed_color4, bool scaled, uint32_t alpha = 255U); - static void unpack_color4(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color4, bool scaled); - - // subblock colors - static void get_diff_subblock_colors(color_rgba* pDst, uint16_t packed_color5, uint32_t table_idx); - static bool get_diff_subblock_colors(color_rgba* pDst, uint16_t packed_color5, uint16_t packed_delta3, uint32_t table_idx); - static void get_abs_subblock_colors(color_rgba* pDst, uint16_t packed_color4, uint32_t table_idx); - - static inline void unscaled_to_scaled_color(color_rgba& dst, const color_rgba& src, bool color4) - { - if (color4) - { - dst.r = src.r | (src.r << 4); - dst.g = src.g | (src.g << 4); - dst.b = src.b | (src.b << 4); - } - else - { - dst.r = (src.r >> 2) | (src.r << 3); - dst.g = (src.g >> 2) | (src.g << 3); - dst.b = (src.b >> 2) | (src.b << 3); - } - dst.a = src.a; - } - - private: - static uint8_t clamp255(int x, bool &did_clamp) - { - if (x < 0) - { - did_clamp = true; - return 0; - } - else if (x > 255) - { - did_clamp = true; - return 255; - } - - return static_cast(x); - } - - static uint8_t clamp255(int x) - { - if (x < 0) - return 0; - else if (x > 255) - return 255; - - return static_cast(x); - } - }; - - typedef basisu::vector etc_block_vec; - - // Returns false if the unpack fails (could be bogus data or ETC2) - bool unpack_etc1(const etc_block& block, color_rgba *pDst, bool preserve_alpha = false); - - enum basis_etc_quality - { - cETCQualityFast, - cETCQualityMedium, - cETCQualitySlow, - cETCQualityUber, - cETCQualityTotal, - }; - - struct basis_etc1_pack_params - { - basis_etc_quality m_quality; - bool m_perceptual; - bool m_cluster_fit; - bool m_force_etc1s; - bool m_use_color4; - float m_flip_bias; - - inline basis_etc1_pack_params() - { - clear(); - } - - void clear() - { - m_quality = cETCQualitySlow; - m_perceptual = true; - m_cluster_fit = true; - m_force_etc1s = false; - m_use_color4 = true; - m_flip_bias = 0.0f; - } - }; - - struct etc1_solution_coordinates - { - inline etc1_solution_coordinates() : - m_unscaled_color(0, 0, 0, 0), - m_inten_table(0), - m_color4(false) - { - } - - inline etc1_solution_coordinates(uint32_t r, uint32_t g, uint32_t b, uint32_t inten_table, bool color4) : - m_unscaled_color((uint8_t)r, (uint8_t)g, (uint8_t)b, 255), - m_inten_table((uint8_t)inten_table), - m_color4(color4) - { - } - - inline etc1_solution_coordinates(const color_rgba& c, uint32_t inten_table, bool color4) : - m_unscaled_color(c), - m_inten_table(inten_table), - m_color4(color4) - { - } - - inline etc1_solution_coordinates(const etc1_solution_coordinates& other) - { - *this = other; - } - - inline etc1_solution_coordinates& operator= (const etc1_solution_coordinates& rhs) - { - m_unscaled_color = rhs.m_unscaled_color; - m_inten_table = rhs.m_inten_table; - m_color4 = rhs.m_color4; - return *this; - } - - inline void clear() - { - m_unscaled_color.clear(); - m_inten_table = 0; - m_color4 = false; - } - - inline void init(const color_rgba& c, uint32_t inten_table, bool color4) - { - m_unscaled_color = c; - m_inten_table = inten_table; - m_color4 = color4; - } - - inline color_rgba get_scaled_color() const - { - int br, bg, bb; - if (m_color4) - { - br = m_unscaled_color.r | (m_unscaled_color.r << 4); - bg = m_unscaled_color.g | (m_unscaled_color.g << 4); - bb = m_unscaled_color.b | (m_unscaled_color.b << 4); - } - else - { - br = (m_unscaled_color.r >> 2) | (m_unscaled_color.r << 3); - bg = (m_unscaled_color.g >> 2) | (m_unscaled_color.g << 3); - bb = (m_unscaled_color.b >> 2) | (m_unscaled_color.b << 3); - } - return color_rgba((uint8_t)br, (uint8_t)bg, (uint8_t)bb, 255); - } - - // returns true if anything was clamped - inline void get_block_colors(color_rgba* pBlock_colors) - { - int br, bg, bb; - if (m_color4) - { - br = m_unscaled_color.r | (m_unscaled_color.r << 4); - bg = m_unscaled_color.g | (m_unscaled_color.g << 4); - bb = m_unscaled_color.b | (m_unscaled_color.b << 4); - } - else - { - br = (m_unscaled_color.r >> 2) | (m_unscaled_color.r << 3); - bg = (m_unscaled_color.g >> 2) | (m_unscaled_color.g << 3); - bb = (m_unscaled_color.b >> 2) | (m_unscaled_color.b << 3); - } - const int* pInten_table = g_etc1_inten_tables[m_inten_table]; - pBlock_colors[0].set(br + pInten_table[0], bg + pInten_table[0], bb + pInten_table[0], 255); - pBlock_colors[1].set(br + pInten_table[1], bg + pInten_table[1], bb + pInten_table[1], 255); - pBlock_colors[2].set(br + pInten_table[2], bg + pInten_table[2], bb + pInten_table[2], 255); - pBlock_colors[3].set(br + pInten_table[3], bg + pInten_table[3], bb + pInten_table[3], 255); - } - - color_rgba m_unscaled_color; - uint32_t m_inten_table; - bool m_color4; - }; - - class etc1_optimizer - { - BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(etc1_optimizer); - - public: - etc1_optimizer() - { - clear(); - } - - void clear() - { - m_pParams = nullptr; - m_pResult = nullptr; - m_pSorted_luma = nullptr; - m_pSorted_luma_indices = nullptr; - } - - struct params; - - typedef bool(*evaluate_solution_override_func)(uint64_t &error, const params &p, const color_rgba* pBlock_colors, const uint8_t* pSelectors, const etc1_solution_coordinates& coords); - - struct params : basis_etc1_pack_params - { - params() - { - clear(); - } - - params(const basis_etc1_pack_params& base_params) - { - clear_optimizer_params(); - - *static_cast(this) = base_params; - } - - void clear() - { - clear_optimizer_params(); - } - - void clear_optimizer_params() - { - basis_etc1_pack_params::clear(); - - m_num_src_pixels = 0; - m_pSrc_pixels = 0; - - m_use_color4 = false; - static const int s_default_scan_delta[] = { 0 }; - m_pScan_deltas = s_default_scan_delta; - m_scan_delta_size = 1; - - m_base_color5.clear(); - m_constrain_against_base_color5 = false; - - m_refinement = true; - - m_pForce_selectors = nullptr; - } - - uint32_t m_num_src_pixels; - const color_rgba* m_pSrc_pixels; - - bool m_use_color4; - const int* m_pScan_deltas; - uint32_t m_scan_delta_size; - - color_rgba m_base_color5; - bool m_constrain_against_base_color5; - - bool m_refinement; - - const uint8_t* m_pForce_selectors; - }; - - struct results - { - uint64_t m_error; - color_rgba m_block_color_unscaled; - uint32_t m_block_inten_table; - uint32_t m_n; - uint8_t* m_pSelectors; - bool m_block_color4; - - inline results& operator= (const results& rhs) - { - m_block_color_unscaled = rhs.m_block_color_unscaled; - m_block_color4 = rhs.m_block_color4; - m_block_inten_table = rhs.m_block_inten_table; - m_error = rhs.m_error; - memcpy(m_pSelectors, rhs.m_pSelectors, minimum(rhs.m_n, m_n)); - return *this; - } - }; - - void init(const params& params, results& result); - bool compute(); - - const params* get_params() const { return m_pParams; } - - private: - struct potential_solution - { - potential_solution() : m_coords(), m_error(UINT64_MAX), m_valid(false) - { - } - - etc1_solution_coordinates m_coords; - basisu::vector m_selectors; - uint64_t m_error; - bool m_valid; - - void clear() - { - m_coords.clear(); - m_selectors.resize(0); - m_error = UINT64_MAX; - m_valid = false; - } - - bool are_selectors_all_equal() const - { - if (!m_selectors.size()) - return false; - const uint32_t s = m_selectors[0]; - for (uint32_t i = 1; i < m_selectors.size(); i++) - if (m_selectors[i] != s) - return false; - return true; - } - }; - - const params* m_pParams; - results* m_pResult; - - int m_limit; - - vec3F m_avg_color; - int m_br, m_bg, m_bb; - int m_max_comp_spread; - basisu::vector m_luma; - basisu::vector m_sorted_luma; - basisu::vector m_sorted_luma_indices; - const uint32_t* m_pSorted_luma_indices; - uint32_t* m_pSorted_luma; - - basisu::vector m_selectors; - basisu::vector m_best_selectors; - - potential_solution m_best_solution; - potential_solution m_trial_solution; - basisu::vector m_temp_selectors; - - enum { cSolutionsTriedHashBits = 10, cTotalSolutionsTriedHashSize = 1 << cSolutionsTriedHashBits, cSolutionsTriedHashMask = cTotalSolutionsTriedHashSize - 1 }; - uint8_t m_solutions_tried[cTotalSolutionsTriedHashSize / 8]; - - void get_nearby_inten_tables(uint32_t idx, int &first_inten_table, int &last_inten_table) - { - first_inten_table = maximum(idx - 1, 0); - last_inten_table = minimum(cETC1IntenModifierValues, idx + 1); - } - - bool check_for_redundant_solution(const etc1_solution_coordinates& coords); - bool evaluate_solution_slow(const etc1_solution_coordinates& coords, potential_solution& trial_solution, potential_solution* pBest_solution); - bool evaluate_solution_fast(const etc1_solution_coordinates& coords, potential_solution& trial_solution, potential_solution* pBest_solution); - - inline bool evaluate_solution(const etc1_solution_coordinates& coords, potential_solution& trial_solution, potential_solution* pBest_solution) - { - if (m_pParams->m_quality >= cETCQualityMedium) - return evaluate_solution_slow(coords, trial_solution, pBest_solution); - else - return evaluate_solution_fast(coords, trial_solution, pBest_solution); - } - - void refine_solution(uint32_t max_refinement_trials); - void compute_internal_neighborhood(int scan_r, int scan_g, int scan_b); - void compute_internal_cluster_fit(uint32_t total_perms_to_try); - }; - - struct pack_etc1_block_context - { - etc1_optimizer m_optimizer; - }; - - void pack_etc1_solid_color_init(); - uint64_t pack_etc1_block_solid_color(etc_block& block, const uint8_t* pColor); - - // ETC EAC - extern const int8_t g_etc2_eac_tables[16][8]; - extern const int8_t g_etc2_eac_tables8[16][8]; - - const uint32_t ETC2_EAC_MIN_VALUE_SELECTOR = 3, ETC2_EAC_MAX_VALUE_SELECTOR = 7; - - struct eac_a8_block - { - uint16_t m_base : 8; - uint16_t m_table : 4; - uint16_t m_multiplier : 4; - - uint8_t m_selectors[6]; - - inline uint32_t get_selector(uint32_t x, uint32_t y, uint64_t selector_bits) const - { - assert((x < 4) && (y < 4)); - return static_cast((selector_bits >> (45 - (y + x * 4) * 3)) & 7); - } - - inline uint64_t get_selector_bits() const - { - uint64_t pixels = ((uint64_t)m_selectors[0] << 40) | ((uint64_t)m_selectors[1] << 32) | ((uint64_t)m_selectors[2] << 24) | ((uint64_t)m_selectors[3] << 16) | ((uint64_t)m_selectors[4] << 8) | m_selectors[5]; - return pixels; - } - - inline void set_selector_bits(uint64_t pixels) - { - m_selectors[0] = (uint8_t)(pixels >> 40); - m_selectors[1] = (uint8_t)(pixels >> 32); - m_selectors[2] = (uint8_t)(pixels >> 24); - m_selectors[3] = (uint8_t)(pixels >> 16); - m_selectors[4] = (uint8_t)(pixels >> 8); - m_selectors[5] = (uint8_t)(pixels); - } - - void set_selector(uint32_t x, uint32_t y, uint32_t s) - { - assert((x < 4) && (y < 4) && (s < 8)); - - const uint32_t ofs = 45 - (y + x * 4) * 3; - - uint64_t pixels = get_selector_bits(); - - pixels &= ~(7ULL << ofs); - pixels |= (static_cast(s) << ofs); - - set_selector_bits(pixels); - } - }; - - struct etc2_rgba_block - { - eac_a8_block m_alpha; - etc_block m_rgb; - }; - - struct pack_eac_a8_results - { - uint32_t m_base; - uint32_t m_table; - uint32_t m_multiplier; - uint8_vec m_selectors; - uint8_vec m_selectors_temp; - }; - - uint64_t pack_eac_a8(pack_eac_a8_results& results, const uint8_t* pPixels, uint32_t num_pixels, uint32_t base_search_rad, uint32_t mul_search_rad, uint32_t table_mask = UINT32_MAX); - void pack_eac_a8(eac_a8_block* pBlock, const uint8_t* pPixels, uint32_t base_search_rad, uint32_t mul_search_rad, uint32_t table_mask = UINT32_MAX); - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_frontend.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_frontend.cpp deleted file mode 100644 index 1f30a33c7..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_frontend.cpp +++ /dev/null @@ -1,3462 +0,0 @@ -// basisu_frontend.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// TODO: -// This code originally supported full ETC1 and ETC1S, so there's some legacy stuff to be cleaned up in here. -// Add endpoint tiling support (where we force adjacent blocks to use the same endpoints during quantization), for a ~10% or more increase in bitrate at same SSIM. The backend already supports this. -// -#include "../transcoder/basisu.h" -#include "basisu_frontend.h" -#include "basisu_opencl.h" -#include -#include - -#if BASISU_SUPPORT_SSE -#define CPPSPMD_NAME(a) a##_sse41 -#include "basisu_kernels_declares.h" -#endif - -#define BASISU_FRONTEND_VERIFY(c) do { if (!(c)) handle_verify_failure(__LINE__); } while(0) - -namespace basisu -{ - const uint32_t cMaxCodebookCreationThreads = 8; - - const uint32_t BASISU_MAX_ENDPOINT_REFINEMENT_STEPS = 3; - //const uint32_t BASISU_MAX_SELECTOR_REFINEMENT_STEPS = 3; - - const uint32_t BASISU_ENDPOINT_PARENT_CODEBOOK_SIZE = 16; - const uint32_t BASISU_SELECTOR_PARENT_CODEBOOK_SIZE_COMP_LEVEL_01 = 32; - const uint32_t BASISU_SELECTOR_PARENT_CODEBOOK_SIZE_COMP_LEVEL_DEFAULT = 16; - - // TODO - How to handle internal verifies in the basisu lib - static inline void handle_verify_failure(int line) - { - error_printf("basisu_frontend: verify check failed at line %i!\n", line); - abort(); - } - - bool basisu_frontend::init(const params &p) - { - debug_printf("basisu_frontend::init: Multithreaded: %u, Job pool total threads: %u, NumEndpointClusters: %u, NumSelectorClusters: %u, Perceptual: %u, CompressionLevel: %u\n", - p.m_multithreaded, p.m_pJob_pool ? p.m_pJob_pool->get_total_threads() : 0, - p.m_max_endpoint_clusters, p.m_max_selector_clusters, p.m_perceptual, p.m_compression_level); - - if ((p.m_max_endpoint_clusters < 1) || (p.m_max_endpoint_clusters > cMaxEndpointClusters)) - return false; - if ((p.m_max_selector_clusters < 1) || (p.m_max_selector_clusters > cMaxSelectorClusters)) - return false; - - m_source_blocks.resize(0); - append_vector(m_source_blocks, p.m_pSource_blocks, p.m_num_source_blocks); - - m_params = p; - - if (m_params.m_pOpenCL_context) - { - BASISU_ASSUME(sizeof(cl_pixel_block) == sizeof(pixel_block)); - - // Upload the RGBA pixel blocks a single time. - if (!opencl_set_pixel_blocks(m_params.m_pOpenCL_context, m_source_blocks.size(), (cl_pixel_block*)m_source_blocks.data())) - { - // This is not fatal, we just won't use OpenCL. - error_printf("basisu_frontend::init: opencl_set_pixel_blocks() failed\n"); - m_params.m_pOpenCL_context = nullptr; - m_opencl_failed = true; - } - } - - m_encoded_blocks.resize(m_params.m_num_source_blocks); - memset(&m_encoded_blocks[0], 0, m_encoded_blocks.size() * sizeof(m_encoded_blocks[0])); - - m_num_endpoint_codebook_iterations = 1; - m_num_selector_codebook_iterations = 1; - - switch (p.m_compression_level) - { - case 0: - { - m_endpoint_refinement = false; - m_use_hierarchical_endpoint_codebooks = true; - m_use_hierarchical_selector_codebooks = true; - break; - } - case 1: - { - m_endpoint_refinement = true; - m_use_hierarchical_endpoint_codebooks = true; - m_use_hierarchical_selector_codebooks = true; - - break; - } - case 2: - { - m_endpoint_refinement = true; - m_use_hierarchical_endpoint_codebooks = true; - m_use_hierarchical_selector_codebooks = true; - - break; - } - case 3: - { - m_endpoint_refinement = true; - m_use_hierarchical_endpoint_codebooks = false; - m_use_hierarchical_selector_codebooks = false; - break; - } - case 4: - { - m_endpoint_refinement = true; - m_use_hierarchical_endpoint_codebooks = true; - m_use_hierarchical_selector_codebooks = true; - m_num_endpoint_codebook_iterations = BASISU_MAX_ENDPOINT_REFINEMENT_STEPS; - m_num_selector_codebook_iterations = BASISU_MAX_ENDPOINT_REFINEMENT_STEPS; - break; - } - case 5: - { - m_endpoint_refinement = true; - m_use_hierarchical_endpoint_codebooks = false; - m_use_hierarchical_selector_codebooks = false; - m_num_endpoint_codebook_iterations = BASISU_MAX_ENDPOINT_REFINEMENT_STEPS; - m_num_selector_codebook_iterations = BASISU_MAX_ENDPOINT_REFINEMENT_STEPS; - break; - } - case 6: - default: - { - m_endpoint_refinement = true; - m_use_hierarchical_endpoint_codebooks = false; - m_use_hierarchical_selector_codebooks = false; - m_num_endpoint_codebook_iterations = BASISU_MAX_ENDPOINT_REFINEMENT_STEPS*2; - m_num_selector_codebook_iterations = BASISU_MAX_ENDPOINT_REFINEMENT_STEPS*2; - break; - } - - } - - if (m_params.m_disable_hierarchical_endpoint_codebooks) - m_use_hierarchical_endpoint_codebooks = false; - - debug_printf("Endpoint refinement: %u, Hierarchical endpoint codebooks: %u, Hierarchical selector codebooks: %u, Endpoint codebook iters: %u, Selector codebook iters: %u\n", - m_endpoint_refinement, m_use_hierarchical_endpoint_codebooks, m_use_hierarchical_selector_codebooks, m_num_endpoint_codebook_iterations, m_num_selector_codebook_iterations); - - return true; - } - - bool basisu_frontend::compress() - { - debug_printf("basisu_frontend::compress\n"); - - m_total_blocks = m_params.m_num_source_blocks; - m_total_pixels = m_total_blocks * cPixelBlockTotalPixels; - - // Encode the initial high quality ETC1S texture - - init_etc1_images(); - - // First quantize the ETC1S endpoints - - if (m_params.m_pGlobal_codebooks) - { - init_global_codebooks(); - } - else - { - init_endpoint_training_vectors(); - - generate_endpoint_clusters(); - - for (uint32_t refine_endpoint_step = 0; refine_endpoint_step < m_num_endpoint_codebook_iterations; refine_endpoint_step++) - { - if (m_params.m_validate) - { - BASISU_FRONTEND_VERIFY(check_etc1s_constraints()); - - BASISU_FRONTEND_VERIFY(validate_endpoint_cluster_hierarchy(false)); - } - - if (refine_endpoint_step) - { - introduce_new_endpoint_clusters(); - } - - if (m_params.m_validate) - { - BASISU_FRONTEND_VERIFY(validate_endpoint_cluster_hierarchy(false)); - } - - generate_endpoint_codebook(refine_endpoint_step); - - if ((m_params.m_debug_images) && (m_params.m_dump_endpoint_clusterization)) - { - char buf[256]; - snprintf(buf, sizeof(buf), "endpoint_cluster_vis_pre_%u.png", refine_endpoint_step); - dump_endpoint_clusterization_visualization(buf, false); - } - - bool early_out = false; - - if (m_endpoint_refinement) - { - //dump_endpoint_clusterization_visualization("endpoint_clusters_before_refinement.png"); - - if (!refine_endpoint_clusterization()) - early_out = true; - - if ((m_params.m_tex_type == basist::cBASISTexTypeVideoFrames) && (!refine_endpoint_step) && (m_num_endpoint_codebook_iterations == 1)) - { - eliminate_redundant_or_empty_endpoint_clusters(); - generate_endpoint_codebook(basisu::maximum(1U, refine_endpoint_step)); - } - - if ((m_params.m_debug_images) && (m_params.m_dump_endpoint_clusterization)) - { - char buf[256]; - snprintf(buf, sizeof(buf), "endpoint_cluster_vis_post_%u.png", refine_endpoint_step); - - dump_endpoint_clusterization_visualization(buf, false); - snprintf(buf, sizeof(buf), "endpoint_cluster_colors_vis_post_%u.png", refine_endpoint_step); - - dump_endpoint_clusterization_visualization(buf, true); - } - } - - if (m_params.m_validate) - { - BASISU_FRONTEND_VERIFY(validate_endpoint_cluster_hierarchy(false)); - } - - eliminate_redundant_or_empty_endpoint_clusters(); - - if (m_params.m_validate) - { - BASISU_FRONTEND_VERIFY(validate_endpoint_cluster_hierarchy(false)); - } - - if (m_params.m_debug_stats) - debug_printf("Total endpoint clusters: %u\n", (uint32_t)m_endpoint_clusters.size()); - - if (early_out) - break; - } - - if (m_params.m_validate) - { - BASISU_FRONTEND_VERIFY(check_etc1s_constraints()); - } - - generate_block_endpoint_clusters(); - - create_initial_packed_texture(); - - // Now quantize the ETC1S selectors - - generate_selector_clusters(); - - if (m_use_hierarchical_selector_codebooks) - compute_selector_clusters_within_each_parent_cluster(); - - if (m_params.m_compression_level == 0) - { - create_optimized_selector_codebook(0); - - find_optimal_selector_clusters_for_each_block(); - - introduce_special_selector_clusters(); - } - else - { - const uint32_t num_refine_selector_steps = m_num_selector_codebook_iterations; - for (uint32_t refine_selector_steps = 0; refine_selector_steps < num_refine_selector_steps; refine_selector_steps++) - { - create_optimized_selector_codebook(refine_selector_steps); - - find_optimal_selector_clusters_for_each_block(); - - introduce_special_selector_clusters(); - - if ((m_params.m_compression_level >= 4) || (m_params.m_tex_type == basist::cBASISTexTypeVideoFrames)) - { - if (!refine_block_endpoints_given_selectors()) - break; - } - } - } - - optimize_selector_codebook(); - - if (m_params.m_debug_stats) - debug_printf("Total selector clusters: %u\n", (uint32_t)m_selector_cluster_block_indices.size()); - } - - finalize(); - - if (m_params.m_validate) - { - if (!validate_output()) - return false; - } - - debug_printf("basisu_frontend::compress: Done\n"); - - return true; - } - - bool basisu_frontend::init_global_codebooks() - { - const basist::basisu_lowlevel_etc1s_transcoder* pTranscoder = m_params.m_pGlobal_codebooks; - - const basist::basisu_lowlevel_etc1s_transcoder::endpoint_vec& endpoints = pTranscoder->get_endpoints(); - const basist::basisu_lowlevel_etc1s_transcoder::selector_vec& selectors = pTranscoder->get_selectors(); - - m_endpoint_cluster_etc_params.resize(endpoints.size()); - for (uint32_t i = 0; i < endpoints.size(); i++) - { - m_endpoint_cluster_etc_params[i].m_inten_table[0] = endpoints[i].m_inten5; - m_endpoint_cluster_etc_params[i].m_inten_table[1] = endpoints[i].m_inten5; - - m_endpoint_cluster_etc_params[i].m_color_unscaled[0].set(endpoints[i].m_color5.r, endpoints[i].m_color5.g, endpoints[i].m_color5.b, 255); - m_endpoint_cluster_etc_params[i].m_color_used[0] = true; - m_endpoint_cluster_etc_params[i].m_valid = true; - } - - m_optimized_cluster_selectors.resize(selectors.size()); - for (uint32_t i = 0; i < m_optimized_cluster_selectors.size(); i++) - { - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - m_optimized_cluster_selectors[i].set_selector(x, y, selectors[i].get_selector(x, y)); - } - - m_block_endpoint_clusters_indices.resize(m_total_blocks); - - m_orig_encoded_blocks.resize(m_total_blocks); - - m_block_selector_cluster_index.resize(m_total_blocks); - -#if 0 - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const etc_block& blk = m_etc1_blocks_etc1s[block_index]; - - const uint32_t block_endpoint_index = m_block_endpoint_clusters_indices[block_index][0]; - - etc_block trial_blk; - trial_blk.set_block_color5_etc1s(blk.m_color_unscaled[0]); - trial_blk.set_flip_bit(true); - - uint64_t best_err = UINT64_MAX; - uint32_t best_index = 0; - - for (uint32_t i = 0; i < m_optimized_cluster_selectors.size(); i++) - { - trial_blk.set_raw_selector_bits(m_optimized_cluster_selectors[i].get_raw_selector_bits()); - - const uint64_t cur_err = trial_blk.evaluate_etc1_error(get_source_pixel_block(block_index).get_ptr(), m_params.m_perceptual); - if (cur_err < best_err) - { - best_err = cur_err; - best_index = i; - if (!cur_err) - break; - } - - } // block_index - - m_block_selector_cluster_index[block_index] = best_index; - } - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - m_encoded_blocks.resize(m_total_blocks); - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t endpoint_index = m_block_endpoint_clusters_indices[block_index][0]; - const uint32_t selector_index = m_block_selector_cluster_index[block_index]; - - etc_block& blk = m_encoded_blocks[block_index]; - - blk.set_block_color5_etc1s(m_endpoint_cluster_etc_params[endpoint_index].m_color_unscaled[0]); - blk.set_inten_tables_etc1s(m_endpoint_cluster_etc_params[endpoint_index].m_inten_table[0]); - blk.set_flip_bit(true); - blk.set_raw_selector_bits(m_optimized_cluster_selectors[selector_index].get_raw_selector_bits()); - } -#endif - - // HACK HACK - const uint32_t NUM_PASSES = 3; - for (uint32_t pass = 0; pass < NUM_PASSES; pass++) - { - debug_printf("init_global_codebooks: pass %u\n", pass); - - const uint32_t N = 128; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index, pass] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const etc_block& blk = pass ? m_encoded_blocks[block_index] : m_etc1_blocks_etc1s[block_index]; - const uint32_t blk_raw_selector_bits = blk.get_raw_selector_bits(); - - etc_block trial_blk(blk); - trial_blk.set_raw_selector_bits(blk_raw_selector_bits); - trial_blk.set_flip_bit(true); - - uint64_t best_err = UINT64_MAX; - uint32_t best_index = 0; - etc_block best_block(trial_blk); - - for (uint32_t i = 0; i < m_endpoint_cluster_etc_params.size(); i++) - { - if (m_endpoint_cluster_etc_params[i].m_inten_table[0] > blk.get_inten_table(0)) - continue; - - trial_blk.set_block_color5_etc1s(m_endpoint_cluster_etc_params[i].m_color_unscaled[0]); - trial_blk.set_inten_tables_etc1s(m_endpoint_cluster_etc_params[i].m_inten_table[0]); - - const color_rgba* pSource_pixels = get_source_pixel_block(block_index).get_ptr(); - uint64_t cur_err; - if (!pass) - cur_err = trial_blk.determine_selectors(pSource_pixels, m_params.m_perceptual); - else - cur_err = trial_blk.evaluate_etc1_error(pSource_pixels, m_params.m_perceptual); - - if (cur_err < best_err) - { - best_err = cur_err; - best_index = i; - best_block = trial_blk; - - if (!cur_err) - break; - } - } - - m_block_endpoint_clusters_indices[block_index][0] = best_index; - m_block_endpoint_clusters_indices[block_index][1] = best_index; - - m_orig_encoded_blocks[block_index] = best_block; - - } // block_index - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - m_endpoint_clusters.resize(0); - m_endpoint_clusters.resize(endpoints.size()); - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t endpoint_cluster_index = m_block_endpoint_clusters_indices[block_index][0]; - m_endpoint_clusters[endpoint_cluster_index].push_back(block_index * 2); - m_endpoint_clusters[endpoint_cluster_index].push_back(block_index * 2 + 1); - } - - m_block_selector_cluster_index.resize(m_total_blocks); - - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const uint32_t block_endpoint_index = m_block_endpoint_clusters_indices[block_index][0]; - - etc_block trial_blk; - trial_blk.set_block_color5_etc1s(m_endpoint_cluster_etc_params[block_endpoint_index].m_color_unscaled[0]); - trial_blk.set_inten_tables_etc1s(m_endpoint_cluster_etc_params[block_endpoint_index].m_inten_table[0]); - trial_blk.set_flip_bit(true); - - uint64_t best_err = UINT64_MAX; - uint32_t best_index = 0; - - for (uint32_t i = 0; i < m_optimized_cluster_selectors.size(); i++) - { - trial_blk.set_raw_selector_bits(m_optimized_cluster_selectors[i].get_raw_selector_bits()); - - const uint64_t cur_err = trial_blk.evaluate_etc1_error(get_source_pixel_block(block_index).get_ptr(), m_params.m_perceptual); - if (cur_err < best_err) - { - best_err = cur_err; - best_index = i; - if (!cur_err) - break; - } - - } // block_index - - m_block_selector_cluster_index[block_index] = best_index; - } - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - m_encoded_blocks.resize(m_total_blocks); - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t endpoint_index = m_block_endpoint_clusters_indices[block_index][0]; - const uint32_t selector_index = m_block_selector_cluster_index[block_index]; - - etc_block& blk = m_encoded_blocks[block_index]; - - blk.set_block_color5_etc1s(m_endpoint_cluster_etc_params[endpoint_index].m_color_unscaled[0]); - blk.set_inten_tables_etc1s(m_endpoint_cluster_etc_params[endpoint_index].m_inten_table[0]); - blk.set_flip_bit(true); - blk.set_raw_selector_bits(m_optimized_cluster_selectors[selector_index].get_raw_selector_bits()); - } - - } // pass - - m_selector_cluster_block_indices.resize(selectors.size()); - for (uint32_t block_index = 0; block_index < m_etc1_blocks_etc1s.size(); block_index++) - m_selector_cluster_block_indices[m_block_selector_cluster_index[block_index]].push_back(block_index); - - return true; - } - - void basisu_frontend::introduce_special_selector_clusters() - { - debug_printf("introduce_special_selector_clusters\n"); - - uint32_t total_blocks_relocated = 0; - const uint32_t initial_selector_clusters = (uint32_t)m_selector_cluster_block_indices.size(); - - bool_vec block_relocated_flags(m_total_blocks); - - // Make sure the selector codebook always has pure flat blocks for each possible selector, to avoid obvious artifacts. - // optimize_selector_codebook() will clean up any redundant clusters we create here. - for (uint32_t sel = 0; sel < 4; sel++) - { - etc_block blk; - clear_obj(blk); - for (uint32_t j = 0; j < 16; j++) - blk.set_selector(j & 3, j >> 2, sel); - - int k; - for (k = 0; k < (int)m_optimized_cluster_selectors.size(); k++) - if (m_optimized_cluster_selectors[k].get_raw_selector_bits() == blk.get_raw_selector_bits()) - break; - if (k < (int)m_optimized_cluster_selectors.size()) - continue; - - debug_printf("Introducing sel %u\n", sel); - - const uint32_t new_selector_cluster_index = (uint32_t)m_optimized_cluster_selectors.size(); - - m_optimized_cluster_selectors.push_back(blk); - - vector_ensure_element_is_valid(m_selector_cluster_block_indices, new_selector_cluster_index); - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - if (m_orig_encoded_blocks[block_index].get_raw_selector_bits() != blk.get_raw_selector_bits()) - continue; - - // See if using flat selectors actually decreases the block's error. - const uint32_t old_selector_cluster_index = m_block_selector_cluster_index[block_index]; - - etc_block cur_blk; - const uint32_t endpoint_cluster_index = get_subblock_endpoint_cluster_index(block_index, 0); - cur_blk.set_block_color5_etc1s(get_endpoint_cluster_unscaled_color(endpoint_cluster_index, false)); - cur_blk.set_inten_tables_etc1s(get_endpoint_cluster_inten_table(endpoint_cluster_index, false)); - cur_blk.set_raw_selector_bits(get_selector_cluster_selector_bits(old_selector_cluster_index).get_raw_selector_bits()); - cur_blk.set_flip_bit(true); - - const uint64_t cur_err = cur_blk.evaluate_etc1_error(get_source_pixel_block(block_index).get_ptr(), m_params.m_perceptual); - - cur_blk.set_raw_selector_bits(blk.get_raw_selector_bits()); - - const uint64_t new_err = cur_blk.evaluate_etc1_error(get_source_pixel_block(block_index).get_ptr(), m_params.m_perceptual); - - if (new_err >= cur_err) - continue; - - // Change the block to use the new cluster - m_block_selector_cluster_index[block_index] = new_selector_cluster_index; - - m_selector_cluster_block_indices[new_selector_cluster_index].push_back(block_index); - - block_relocated_flags[block_index] = true; - -#if 0 - int j = vector_find(m_selector_cluster_block_indices[old_selector_cluster_index], block_index); - if (j >= 0) - m_selector_cluster_block_indices[old_selector_cluster_index].erase(m_selector_cluster_block_indices[old_selector_cluster_index].begin() + j); -#endif - - total_blocks_relocated++; - - m_encoded_blocks[block_index].set_raw_selector_bits(blk.get_raw_selector_bits()); - - } // block_index - - } // sel - - if (total_blocks_relocated) - { - debug_printf("Fixing selector codebook\n"); - - for (int selector_cluster_index = 0; selector_cluster_index < (int)initial_selector_clusters; selector_cluster_index++) - { - uint_vec& block_indices = m_selector_cluster_block_indices[selector_cluster_index]; - - uint32_t dst_ofs = 0; - - for (uint32_t i = 0; i < block_indices.size(); i++) - { - const uint32_t block_index = block_indices[i]; - if (!block_relocated_flags[block_index]) - block_indices[dst_ofs++] = block_index; - } - - block_indices.resize(dst_ofs); - } - } - - debug_printf("Total blocks relocated to new flat selector clusters: %u\n", total_blocks_relocated); - } - - // This method will change the number and ordering of the selector codebook clusters. - void basisu_frontend::optimize_selector_codebook() - { - debug_printf("optimize_selector_codebook\n"); - - const uint32_t orig_total_selector_clusters = (uint32_t)m_optimized_cluster_selectors.size(); - - bool_vec selector_cluster_was_used(m_optimized_cluster_selectors.size()); - for (uint32_t i = 0; i < m_total_blocks; i++) - selector_cluster_was_used[m_block_selector_cluster_index[i]] = true; - - int_vec old_to_new(m_optimized_cluster_selectors.size()); - int_vec new_to_old; - uint32_t total_new_entries = 0; - - std::unordered_map selector_hashmap; - - for (int i = 0; i < static_cast(m_optimized_cluster_selectors.size()); i++) - { - if (!selector_cluster_was_used[i]) - { - old_to_new[i] = -1; - continue; - } - - const uint32_t raw_selector_bits = m_optimized_cluster_selectors[i].get_raw_selector_bits(); - - auto find_res = selector_hashmap.insert(std::make_pair(raw_selector_bits, total_new_entries)); - if (!find_res.second) - { - old_to_new[i] = (find_res.first)->second; - continue; - } - - old_to_new[i] = total_new_entries++; - new_to_old.push_back(i); - } - - debug_printf("Original selector clusters: %u, new cluster selectors: %u\n", orig_total_selector_clusters, total_new_entries); - - for (uint32_t i = 0; i < m_block_selector_cluster_index.size(); i++) - { - BASISU_FRONTEND_VERIFY((old_to_new[m_block_selector_cluster_index[i]] >= 0) && (old_to_new[m_block_selector_cluster_index[i]] < (int)total_new_entries)); - m_block_selector_cluster_index[i] = old_to_new[m_block_selector_cluster_index[i]]; - } - - basisu::vector new_optimized_cluster_selectors(m_optimized_cluster_selectors.size() ? total_new_entries : 0); - basisu::vector new_selector_cluster_indices(m_selector_cluster_block_indices.size() ? total_new_entries : 0); - - for (uint32_t i = 0; i < total_new_entries; i++) - { - if (m_optimized_cluster_selectors.size()) - new_optimized_cluster_selectors[i] = m_optimized_cluster_selectors[new_to_old[i]]; - - //if (m_selector_cluster_block_indices.size()) - // new_selector_cluster_indices[i] = m_selector_cluster_block_indices[new_to_old[i]]; - } - - for (uint32_t i = 0; i < m_block_selector_cluster_index.size(); i++) - { - new_selector_cluster_indices[m_block_selector_cluster_index[i]].push_back(i); - } - - m_optimized_cluster_selectors.swap(new_optimized_cluster_selectors); - m_selector_cluster_block_indices.swap(new_selector_cluster_indices); - - // This isn't strictly necessary - doing it for completeness/future sanity. - if (m_selector_clusters_within_each_parent_cluster.size()) - { - for (uint32_t i = 0; i < m_selector_clusters_within_each_parent_cluster.size(); i++) - for (uint32_t j = 0; j < m_selector_clusters_within_each_parent_cluster[i].size(); j++) - m_selector_clusters_within_each_parent_cluster[i][j] = old_to_new[m_selector_clusters_within_each_parent_cluster[i][j]]; - } - - debug_printf("optimize_selector_codebook: Before: %u After: %u\n", orig_total_selector_clusters, total_new_entries); - } - - void basisu_frontend::init_etc1_images() - { - debug_printf("basisu_frontend::init_etc1_images\n"); - - interval_timer tm; - tm.start(); - - m_etc1_blocks_etc1s.resize(m_total_blocks); - - bool use_cpu = true; - - if (m_params.m_pOpenCL_context) - { - uint32_t total_perms = 64; - if (m_params.m_compression_level == 0) - total_perms = 4; - else if (m_params.m_compression_level == 1) - total_perms = 16; - else if (m_params.m_compression_level == BASISU_MAX_COMPRESSION_LEVEL) - total_perms = OPENCL_ENCODE_ETC1S_MAX_PERMS; - - bool status = opencl_encode_etc1s_blocks(m_params.m_pOpenCL_context, m_etc1_blocks_etc1s.data(), m_params.m_perceptual, total_perms); - if (status) - use_cpu = false; - else - { - error_printf("basisu_frontend::init_etc1_images: opencl_encode_etc1s_blocks() failed! Using CPU.\n"); - m_params.m_pOpenCL_context = nullptr; - m_opencl_failed = true; - } - } - - if (use_cpu) - { - const uint32_t N = 4096; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const pixel_block& source_blk = get_source_pixel_block(block_index); - - etc1_optimizer optimizer; - etc1_optimizer::params optimizer_params; - etc1_optimizer::results optimizer_results; - - if (m_params.m_compression_level == 0) - optimizer_params.m_quality = cETCQualityFast; - else if (m_params.m_compression_level == 1) - optimizer_params.m_quality = cETCQualityMedium; - else if (m_params.m_compression_level == BASISU_MAX_COMPRESSION_LEVEL) - optimizer_params.m_quality = cETCQualityUber; - - optimizer_params.m_num_src_pixels = 16; - optimizer_params.m_pSrc_pixels = source_blk.get_ptr(); - optimizer_params.m_perceptual = m_params.m_perceptual; - - uint8_t selectors[16]; - optimizer_results.m_pSelectors = selectors; - optimizer_results.m_n = 16; - - optimizer.init(optimizer_params, optimizer_results); - if (!optimizer.compute()) - BASISU_FRONTEND_VERIFY(false); - - etc_block& blk = m_etc1_blocks_etc1s[block_index]; - - memset(&blk, 0, sizeof(blk)); - blk.set_block_color5_etc1s(optimizer_results.m_block_color_unscaled); - blk.set_inten_tables_etc1s(optimizer_results.m_block_inten_table); - blk.set_flip_bit(true); - - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - blk.set_selector(x, y, selectors[x + y * 4]); - } - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - } // use_cpu - - debug_printf("init_etc1_images: Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - } - - void basisu_frontend::init_endpoint_training_vectors() - { - debug_printf("init_endpoint_training_vectors\n"); - - vec6F_quantizer::array_of_weighted_training_vecs &training_vecs = m_endpoint_clusterizer.get_training_vecs(); - - training_vecs.resize(m_total_blocks * 2); - - const uint32_t N = 16384; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job( [this, first_index, last_index, &training_vecs] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const etc_block &blk = m_etc1_blocks_etc1s[block_index]; - - color_rgba block_colors[2]; - blk.get_block_low_high_colors(block_colors, 0); - - vec6F v; - v[0] = block_colors[0].r * (1.0f / 255.0f); - v[1] = block_colors[0].g * (1.0f / 255.0f); - v[2] = block_colors[0].b * (1.0f / 255.0f); - v[3] = block_colors[1].r * (1.0f / 255.0f); - v[4] = block_colors[1].g * (1.0f / 255.0f); - v[5] = block_colors[1].b * (1.0f / 255.0f); - - training_vecs[block_index * 2 + 0] = std::make_pair(v, 1); - training_vecs[block_index * 2 + 1] = std::make_pair(v, 1); - - } // block_index; - -#ifndef __EMSCRIPTEN__ - } ); -#endif - - } // block_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - } - - void basisu_frontend::generate_endpoint_clusters() - { - debug_printf("Begin endpoint quantization\n"); - - const uint32_t parent_codebook_size = (m_params.m_max_endpoint_clusters >= 256) ? BASISU_ENDPOINT_PARENT_CODEBOOK_SIZE : 0; - uint32_t max_threads = 0; - max_threads = m_params.m_multithreaded ? minimum(std::thread::hardware_concurrency(), cMaxCodebookCreationThreads) : 0; - if (m_params.m_pJob_pool) - max_threads = minimum((int)m_params.m_pJob_pool->get_total_threads(), max_threads); - - debug_printf("max_threads: %u\n", max_threads); - bool status = generate_hierarchical_codebook_threaded(m_endpoint_clusterizer, - m_params.m_max_endpoint_clusters, m_use_hierarchical_endpoint_codebooks ? parent_codebook_size : 0, - m_endpoint_clusters, - m_endpoint_parent_clusters, - max_threads, m_params.m_pJob_pool, true); - BASISU_FRONTEND_VERIFY(status); - - if (m_use_hierarchical_endpoint_codebooks) - { - if (!m_endpoint_parent_clusters.size()) - { - m_endpoint_parent_clusters.resize(0); - m_endpoint_parent_clusters.resize(1); - for (uint32_t i = 0; i < m_total_blocks; i++) - { - m_endpoint_parent_clusters[0].push_back(i*2); - m_endpoint_parent_clusters[0].push_back(i*2+1); - } - } - - BASISU_ASSUME(BASISU_ENDPOINT_PARENT_CODEBOOK_SIZE <= UINT8_MAX); - - m_block_parent_endpoint_cluster.resize(0); - m_block_parent_endpoint_cluster.resize(m_total_blocks); - vector_set_all(m_block_parent_endpoint_cluster, 0xFF); - for (uint32_t parent_cluster_index = 0; parent_cluster_index < m_endpoint_parent_clusters.size(); parent_cluster_index++) - { - const uint_vec &cluster = m_endpoint_parent_clusters[parent_cluster_index]; - for (uint32_t j = 0; j < cluster.size(); j++) - { - const uint32_t block_index = cluster[j] >> 1; - m_block_parent_endpoint_cluster[block_index] = static_cast(parent_cluster_index); - } - } - - for (uint32_t i = 0; i < m_total_blocks; i++) - { - BASISU_FRONTEND_VERIFY(m_block_parent_endpoint_cluster[i] != 0xFF); - } - - // Ensure that all the blocks within each cluster are all in the same parent cluster, or something is very wrong. - for (uint32_t cluster_index = 0; cluster_index < m_endpoint_clusters.size(); cluster_index++) - { - const uint_vec &cluster = m_endpoint_clusters[cluster_index]; - - uint32_t parent_cluster_index = 0; - for (uint32_t j = 0; j < cluster.size(); j++) - { - const uint32_t block_index = cluster[j] >> 1; - - BASISU_FRONTEND_VERIFY(block_index < m_block_parent_endpoint_cluster.size()); - - if (!j) - { - parent_cluster_index = m_block_parent_endpoint_cluster[block_index]; - } - else - { - BASISU_FRONTEND_VERIFY(m_block_parent_endpoint_cluster[block_index] == parent_cluster_index); - } - } - } - } - - if (m_params.m_debug_stats) - debug_printf("Total endpoint clusters: %u, parent clusters: %u\n", (uint32_t)m_endpoint_clusters.size(), (uint32_t)m_endpoint_parent_clusters.size()); - } - - // Iterate through each array of endpoint cluster block indices and set the m_block_endpoint_clusters_indices[][] array to indicaste which cluster index each block uses. - void basisu_frontend::generate_block_endpoint_clusters() - { - m_block_endpoint_clusters_indices.resize(m_total_blocks); - - for (int cluster_index = 0; cluster_index < static_cast(m_endpoint_clusters.size()); cluster_index++) - { - const basisu::vector& cluster_indices = m_endpoint_clusters[cluster_index]; - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - - m_block_endpoint_clusters_indices[block_index][subblock_index] = cluster_index; - - } // cluster_indices_iter - } - - if (m_params.m_validate) - { - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - uint32_t cluster_0 = m_block_endpoint_clusters_indices[block_index][0]; - uint32_t cluster_1 = m_block_endpoint_clusters_indices[block_index][1]; - BASISU_FRONTEND_VERIFY(cluster_0 == cluster_1); - } - } - } - - void basisu_frontend::compute_endpoint_clusters_within_each_parent_cluster() - { - generate_block_endpoint_clusters(); - - m_endpoint_clusters_within_each_parent_cluster.resize(0); - m_endpoint_clusters_within_each_parent_cluster.resize(m_endpoint_parent_clusters.size()); - - // Note: It's possible that some blocks got moved into the same cluster, but live in different parent clusters. - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t cluster_index = m_block_endpoint_clusters_indices[block_index][0]; - const uint32_t parent_cluster_index = m_block_parent_endpoint_cluster[block_index]; - - m_endpoint_clusters_within_each_parent_cluster[parent_cluster_index].push_back(cluster_index); - } - - for (uint32_t i = 0; i < m_endpoint_clusters_within_each_parent_cluster.size(); i++) - { - uint_vec &cluster_indices = m_endpoint_clusters_within_each_parent_cluster[i]; - - BASISU_FRONTEND_VERIFY(cluster_indices.size()); - - vector_sort(cluster_indices); - - auto last = std::unique(cluster_indices.begin(), cluster_indices.end()); - cluster_indices.erase(last, cluster_indices.end()); - } - } - - void basisu_frontend::compute_endpoint_subblock_error_vec() - { - m_subblock_endpoint_quant_err_vec.resize(0); - - const uint32_t N = 512; - for (uint32_t cluster_index_iter = 0; cluster_index_iter < m_endpoint_clusters.size(); cluster_index_iter += N) - { - const uint32_t first_index = cluster_index_iter; - const uint32_t last_index = minimum((uint32_t)m_endpoint_clusters.size(), cluster_index_iter + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job( [this, first_index, last_index] { -#endif - - for (uint32_t cluster_index = first_index; cluster_index < last_index; cluster_index++) - { - const basisu::vector& cluster_indices = m_endpoint_clusters[cluster_index]; - - assert(cluster_indices.size()); - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - basisu::vector cluster_pixels(8); - - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - - const bool flipped = true; - - const color_rgba *pSource_block_pixels = get_source_pixel_block(block_index).get_ptr(); - - for (uint32_t pixel_index = 0; pixel_index < 8; pixel_index++) - { - cluster_pixels[pixel_index] = pSource_block_pixels[g_etc1_pixel_indices[flipped][subblock_index][pixel_index]]; - } - - const endpoint_cluster_etc_params &etc_params = m_endpoint_cluster_etc_params[cluster_index]; - - assert(etc_params.m_valid); - - color_rgba block_colors[4]; - etc_block::get_block_colors5(block_colors, etc_params.m_color_unscaled[0], etc_params.m_inten_table[0], true); - - uint64_t total_err = 0; - - for (uint32_t i = 0; i < 8; i++) - { - const color_rgba &c = cluster_pixels[i]; - - uint64_t best_err = UINT64_MAX; - //uint32_t best_index = 0; - - for (uint32_t s = 0; s < 4; s++) - { - uint64_t err = color_distance(m_params.m_perceptual, c, block_colors[s], false); - if (err < best_err) - { - best_err = err; - //best_index = s; - } - } - - total_err += best_err; - } - - subblock_endpoint_quant_err quant_err; - quant_err.m_total_err = total_err; - quant_err.m_cluster_index = cluster_index; - quant_err.m_cluster_subblock_index = cluster_indices_iter; - quant_err.m_block_index = block_index; - quant_err.m_subblock_index = subblock_index; - - { - std::lock_guard lock(m_lock); - - m_subblock_endpoint_quant_err_vec.push_back(quant_err); - } - } - } // cluster_index - -#ifndef __EMSCRIPTEN__ - } ); -#endif - - } // cluster_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - vector_sort(m_subblock_endpoint_quant_err_vec); - } - - void basisu_frontend::introduce_new_endpoint_clusters() - { - debug_printf("introduce_new_endpoint_clusters\n"); - - generate_block_endpoint_clusters(); - - int num_new_endpoint_clusters = m_params.m_max_endpoint_clusters - (uint32_t)m_endpoint_clusters.size(); - if (num_new_endpoint_clusters <= 0) - return; - - compute_endpoint_subblock_error_vec(); - - const uint32_t num_orig_endpoint_clusters = (uint32_t)m_endpoint_clusters.size(); - - std::unordered_set training_vector_was_relocated; - - uint_vec cluster_sizes(num_orig_endpoint_clusters); - for (uint32_t i = 0; i < num_orig_endpoint_clusters; i++) - cluster_sizes[i] = (uint32_t)m_endpoint_clusters[i].size(); - - std::unordered_set ignore_cluster; - - uint32_t total_new_clusters = 0; - - while (num_new_endpoint_clusters) - { - if (m_subblock_endpoint_quant_err_vec.size() == 0) - break; - - subblock_endpoint_quant_err subblock_to_move(m_subblock_endpoint_quant_err_vec.back()); - - m_subblock_endpoint_quant_err_vec.pop_back(); - - if (unordered_set_contains(ignore_cluster, subblock_to_move.m_cluster_index)) - continue; - - uint32_t training_vector_index = subblock_to_move.m_block_index * 2 + subblock_to_move.m_subblock_index; - - if (cluster_sizes[subblock_to_move.m_cluster_index] <= 2) - continue; - - if (unordered_set_contains(training_vector_was_relocated, training_vector_index)) - continue; - - if (unordered_set_contains(training_vector_was_relocated, training_vector_index ^ 1)) - continue; - -#if 0 - const uint32_t block_index = subblock_to_move.m_block_index; - const etc_block& blk = m_etc1_blocks_etc1s[block_index]; - uint32_t ls, hs; - blk.get_selector_range(ls, hs); - if (ls != hs) - continue; -#endif - - //const uint32_t new_endpoint_cluster_index = (uint32_t)m_endpoint_clusters.size(); - - enlarge_vector(m_endpoint_clusters, 1)->push_back(training_vector_index); - enlarge_vector(m_endpoint_cluster_etc_params, 1); - - assert(m_endpoint_clusters.size() == m_endpoint_cluster_etc_params.size()); - - training_vector_was_relocated.insert(training_vector_index); - - m_endpoint_clusters.back().push_back(training_vector_index ^ 1); - training_vector_was_relocated.insert(training_vector_index ^ 1); - - BASISU_FRONTEND_VERIFY(cluster_sizes[subblock_to_move.m_cluster_index] >= 2); - cluster_sizes[subblock_to_move.m_cluster_index] -= 2; - - ignore_cluster.insert(subblock_to_move.m_cluster_index); - - total_new_clusters++; - - num_new_endpoint_clusters--; - } - - debug_printf("Introduced %i new endpoint clusters\n", total_new_clusters); - - for (uint32_t i = 0; i < num_orig_endpoint_clusters; i++) - { - uint_vec &cluster_indices = m_endpoint_clusters[i]; - - uint_vec new_cluster_indices; - for (uint32_t j = 0; j < cluster_indices.size(); j++) - { - uint32_t training_vector_index = cluster_indices[j]; - - if (!unordered_set_contains(training_vector_was_relocated, training_vector_index)) - new_cluster_indices.push_back(training_vector_index); - } - - if (cluster_indices.size() != new_cluster_indices.size()) - { - BASISU_FRONTEND_VERIFY(new_cluster_indices.size() > 0); - cluster_indices.swap(new_cluster_indices); - } - } - - generate_block_endpoint_clusters(); - } - - struct color_rgba_hasher - { - inline std::size_t operator()(const color_rgba& k) const - { - uint32_t v = *(const uint32_t*)&k; - - //return bitmix32(v); - - //v ^= (v << 10); - //v ^= (v >> 12); - - return v; - } - }; - - // Given each endpoint cluster, gather all the block pixels which are in that cluster and compute optimized ETC1S endpoints for them. - // TODO: Don't optimize endpoint clusters which haven't changed. - // If step>=1, we check to ensure the new endpoint values actually decrease quantization error. - void basisu_frontend::generate_endpoint_codebook(uint32_t step) - { - debug_printf("generate_endpoint_codebook\n"); - - interval_timer tm; - tm.start(); - - m_endpoint_cluster_etc_params.resize(m_endpoint_clusters.size()); - - bool use_cpu = true; - // TODO: Get this working when step>0 - if (m_params.m_pOpenCL_context && !step) - { - const uint32_t total_clusters = m_endpoint_clusters.size(); - - basisu::vector pixel_clusters(total_clusters); - - std::vector input_pixels; - input_pixels.reserve(m_total_blocks * 16); - - std::vector pixel_weights; - pixel_weights.reserve(m_total_blocks * 16); - - uint_vec cluster_sizes(total_clusters); - - //typedef basisu::hash_map color_hasher_type; - //color_hasher_type color_hasher; - //color_hasher.reserve(2048); - - interval_timer hash_tm; - hash_tm.start(); - - basisu::vector colors, colors2; - colors.reserve(65536); - colors2.reserve(65536); - - for (uint32_t cluster_index = 0; cluster_index < m_endpoint_clusters.size(); cluster_index++) - { - const basisu::vector& cluster_indices = m_endpoint_clusters[cluster_index]; - assert((cluster_indices.size() & 1) == 0); - -#if 0 - uint64_t first_pixel_index = input_pixels.size(); - const uint32_t total_pixels = 16 * (cluster_indices.size() / 2); - - input_pixels.resize(input_pixels.size() + total_pixels); - pixel_weights.resize(pixel_weights.size() + total_pixels); - - uint64_t dst_ofs = first_pixel_index; - - uint64_t total_r = 0, total_g = 0, total_b = 0; - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - if (subblock_index) - continue; - - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const color_rgba* pBlock_pixels = get_source_pixel_block(block_index).get_ptr(); - - for (uint32_t i = 0; i < 16; i++) - { - input_pixels[dst_ofs] = pBlock_pixels[i]; - pixel_weights[dst_ofs] = 1; - dst_ofs++; - - total_r += pBlock_pixels[i].r; - total_g += pBlock_pixels[i].g; - total_b += pBlock_pixels[i].b; - } - } - - //printf("%i %f %f %f\n", cluster_index, total_r / (float)total_pixels, total_g / (float)total_pixels, total_b / (float)total_pixels); - - pixel_clusters[cluster_index].m_first_pixel_index = first_pixel_index; - pixel_clusters[cluster_index].m_total_pixels = total_pixels; - cluster_sizes[cluster_index] = total_pixels; -#elif 1 - colors.resize(cluster_indices.size() * 8); - colors2.resize(cluster_indices.size() * 8); - uint32_t dst_ofs = 0; - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - if (subblock_index) - continue; - - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const color_rgba* pBlock_pixels = get_source_pixel_block(block_index).get_ptr(); - - memcpy(colors.data() + dst_ofs, pBlock_pixels, sizeof(color_rgba) * 16); - dst_ofs += 16; - - } // cluster_indices_iter - - uint32_t* pSorted = radix_sort(colors.size(), colors.data(), colors2.data(), 0, 3); - - const uint64_t first_pixel_index = input_pixels.size(); - - uint32_t prev_color = 0, cur_weight = 0; - - for (uint32_t i = 0; i < colors.size(); i++) - { - uint32_t cur_color = pSorted[i]; - if (cur_color == prev_color) - { - if (++cur_weight == 0) - cur_weight--; - } - else - { - if (cur_weight) - { - input_pixels.push_back(*(const color_rgba*)&prev_color); - pixel_weights.push_back(cur_weight); - } - - prev_color = cur_color; - cur_weight = 1; - } - } - - if (cur_weight) - { - input_pixels.push_back(*(const color_rgba*)&prev_color); - pixel_weights.push_back(cur_weight); - } - - uint32_t total_unique_pixels = (uint32_t)(input_pixels.size() - first_pixel_index); - - pixel_clusters[cluster_index].m_first_pixel_index = first_pixel_index; - pixel_clusters[cluster_index].m_total_pixels = total_unique_pixels; - - cluster_sizes[cluster_index] = total_unique_pixels; -#else - color_hasher.reset(); - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - if (subblock_index) - continue; - - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const color_rgba* pBlock_pixels = get_source_pixel_block(block_index).get_ptr(); - - uint32_t *pPrev_weight = nullptr; - color_rgba prev_color; - - { - color_rgba cur_color = pBlock_pixels[0]; - auto res = color_hasher.insert(cur_color, 0); - - uint32_t& weight = (res.first)->second; - if (weight != UINT32_MAX) - weight++; - - prev_color = cur_color; - pPrev_weight = &(res.first)->second; - } - - for (uint32_t i = 1; i < 16; i++) - { - color_rgba cur_color = pBlock_pixels[i]; - - if (cur_color == prev_color) - { - if (*pPrev_weight != UINT32_MAX) - *pPrev_weight = *pPrev_weight + 1; - } - else - { - auto res = color_hasher.insert(cur_color, 0); - - uint32_t& weight = (res.first)->second; - if (weight != UINT32_MAX) - weight++; - - prev_color = cur_color; - pPrev_weight = &(res.first)->second; - } - } - - } // cluster_indices_iter - - const uint64_t first_pixel_index = input_pixels.size(); - uint32_t total_unique_pixels = color_hasher.size(); - - pixel_clusters[cluster_index].m_first_pixel_index = first_pixel_index; - pixel_clusters[cluster_index].m_total_pixels = total_unique_pixels; - - input_pixels.resize(first_pixel_index + total_unique_pixels); - pixel_weights.resize(first_pixel_index + total_unique_pixels); - - uint32_t j = 0; - - for (auto it = color_hasher.begin(); it != color_hasher.end(); ++it, ++j) - { - input_pixels[first_pixel_index + j] = it->first; - pixel_weights[first_pixel_index + j] = it->second; - } - - cluster_sizes[cluster_index] = total_unique_pixels; -#endif - - } // cluster_index - - debug_printf("Total hash time: %3.3f secs\n", hash_tm.get_elapsed_secs()); - - debug_printf("Total unique colors: %llu\n", input_pixels.size()); - - uint_vec sorted_cluster_indices_new_to_old(total_clusters); - indirect_sort(total_clusters, sorted_cluster_indices_new_to_old.data(), cluster_sizes.data()); - //for (uint32_t i = 0; i < total_clusters; i++) - // sorted_cluster_indices_new_to_old[i] = i; - - uint_vec sorted_cluster_indices_old_to_new(total_clusters); - for (uint32_t i = 0; i < total_clusters; i++) - sorted_cluster_indices_old_to_new[sorted_cluster_indices_new_to_old[i]] = i; - - basisu::vector sorted_pixel_clusters(total_clusters); - for (uint32_t i = 0; i < total_clusters; i++) - sorted_pixel_clusters[i] = pixel_clusters[sorted_cluster_indices_new_to_old[i]]; - - uint32_t total_perms = 64; - if (m_params.m_compression_level <= 1) - total_perms = 16; - else if (m_params.m_compression_level == BASISU_MAX_COMPRESSION_LEVEL) - total_perms = OPENCL_ENCODE_ETC1S_MAX_PERMS; - - basisu::vector output_blocks(total_clusters); - - if (opencl_encode_etc1s_pixel_clusters( - m_params.m_pOpenCL_context, - output_blocks.data(), - total_clusters, - sorted_pixel_clusters.data(), - input_pixels.size(), - input_pixels.data(), - pixel_weights.data(), - m_params.m_perceptual, total_perms)) - { - for (uint32_t old_cluster_index = 0; old_cluster_index < m_endpoint_clusters.size(); old_cluster_index++) - { - const uint32_t new_cluster_index = sorted_cluster_indices_old_to_new[old_cluster_index]; - - const etc_block& blk = output_blocks[new_cluster_index]; - - endpoint_cluster_etc_params& prev_etc_params = m_endpoint_cluster_etc_params[old_cluster_index]; - - prev_etc_params.m_valid = true; - etc_block::unpack_color5(prev_etc_params.m_color_unscaled[0], blk.get_base5_color(), false); - prev_etc_params.m_inten_table[0] = blk.get_inten_table(0); - prev_etc_params.m_color_error[0] = 0; // dummy value - we don't actually use this - } - - use_cpu = false; - } - else - { - error_printf("basisu_frontend::generate_endpoint_codebook: opencl_encode_etc1s_pixel_clusters() failed! Using CPU.\n"); - m_params.m_pOpenCL_context = nullptr; - m_opencl_failed = true; - } - - } // if (opencl_is_available() && m_params.m_use_opencl) - - if (use_cpu) - { - const uint32_t N = 128; - for (uint32_t cluster_index_iter = 0; cluster_index_iter < m_endpoint_clusters.size(); cluster_index_iter += N) - { - const uint32_t first_index = cluster_index_iter; - const uint32_t last_index = minimum((uint32_t)m_endpoint_clusters.size(), cluster_index_iter + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index, step] { -#endif - - for (uint32_t cluster_index = first_index; cluster_index < last_index; cluster_index++) - { - const basisu::vector& cluster_indices = m_endpoint_clusters[cluster_index]; - - BASISU_FRONTEND_VERIFY(cluster_indices.size()); - - const uint32_t total_pixels = (uint32_t)cluster_indices.size() * 8; - - basisu::vector cluster_pixels(total_pixels); - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - - const bool flipped = true; - - const color_rgba* pBlock_pixels = get_source_pixel_block(block_index).get_ptr(); - - for (uint32_t pixel_index = 0; pixel_index < 8; pixel_index++) - { - const color_rgba& c = pBlock_pixels[g_etc1_pixel_indices[flipped][subblock_index][pixel_index]]; - cluster_pixels[cluster_indices_iter * 8 + pixel_index] = c; - } - } - - endpoint_cluster_etc_params new_subblock_params; - - { - etc1_optimizer optimizer; - etc1_solution_coordinates solutions[2]; - - etc1_optimizer::params cluster_optimizer_params; - cluster_optimizer_params.m_num_src_pixels = total_pixels; - cluster_optimizer_params.m_pSrc_pixels = &cluster_pixels[0]; - - cluster_optimizer_params.m_use_color4 = false; - cluster_optimizer_params.m_perceptual = m_params.m_perceptual; - - if (m_params.m_compression_level <= 1) - cluster_optimizer_params.m_quality = cETCQualityMedium; - else if (m_params.m_compression_level == BASISU_MAX_COMPRESSION_LEVEL) - cluster_optimizer_params.m_quality = cETCQualityUber; - - etc1_optimizer::results cluster_optimizer_results; - - basisu::vector cluster_selectors(total_pixels); - cluster_optimizer_results.m_n = total_pixels; - cluster_optimizer_results.m_pSelectors = &cluster_selectors[0]; - - optimizer.init(cluster_optimizer_params, cluster_optimizer_results); - - if (!optimizer.compute()) - BASISU_FRONTEND_VERIFY(false); - - new_subblock_params.m_color_unscaled[0] = cluster_optimizer_results.m_block_color_unscaled; - new_subblock_params.m_inten_table[0] = cluster_optimizer_results.m_block_inten_table; - new_subblock_params.m_color_error[0] = cluster_optimizer_results.m_error; - } - - endpoint_cluster_etc_params& prev_etc_params = m_endpoint_cluster_etc_params[cluster_index]; - - bool use_new_subblock_params = false; - if ((!step) || (!prev_etc_params.m_valid)) - use_new_subblock_params = true; - else - { - assert(prev_etc_params.m_valid); - - uint64_t total_prev_err = 0; - - { - color_rgba block_colors[4]; - - etc_block::get_block_colors5(block_colors, prev_etc_params.m_color_unscaled[0], prev_etc_params.m_inten_table[0], false); - - uint64_t total_err = 0; - - for (uint32_t i = 0; i < total_pixels; i++) - { - const color_rgba& c = cluster_pixels[i]; - - uint64_t best_err = UINT64_MAX; - //uint32_t best_index = 0; - - for (uint32_t s = 0; s < 4; s++) - { - uint64_t err = color_distance(m_params.m_perceptual, c, block_colors[s], false); - if (err < best_err) - { - best_err = err; - //best_index = s; - } - } - - total_err += best_err; - } - - total_prev_err += total_err; - } - - // See if we should update this cluster's endpoints (if the error has actually fallen) - if (total_prev_err > new_subblock_params.m_color_error[0]) - { - use_new_subblock_params = true; - } - } - - if (use_new_subblock_params) - { - new_subblock_params.m_valid = true; - - prev_etc_params = new_subblock_params; - } - - } // cluster_index - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } // cluster_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - } - - debug_printf("Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - } - - bool basisu_frontend::check_etc1s_constraints() const - { - basisu::vector block_clusters(m_total_blocks); - - for (int cluster_index = 0; cluster_index < static_cast(m_endpoint_clusters.size()); cluster_index++) - { - const basisu::vector& cluster_indices = m_endpoint_clusters[cluster_index]; - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - - block_clusters[block_index][subblock_index] = cluster_index; - - } // cluster_indices_iter - } - - for (uint32_t i = 0; i < m_total_blocks; i++) - { - if (block_clusters[i][0] != block_clusters[i][1]) - return false; - } - - return true; - } - - // For each block, determine which ETC1S endpoint cluster can encode that block with lowest error. - // This reassigns blocks to different endpoint clusters. - uint32_t basisu_frontend::refine_endpoint_clusterization() - { - debug_printf("refine_endpoint_clusterization\n"); - - if (m_use_hierarchical_endpoint_codebooks) - compute_endpoint_clusters_within_each_parent_cluster(); - - // Note: It's possible that an endpoint cluster may live in more than one parent cluster after the first refinement step. - - basisu::vector block_clusters(m_total_blocks); - - for (int cluster_index = 0; cluster_index < static_cast(m_endpoint_clusters.size()); cluster_index++) - { - const basisu::vector& cluster_indices = m_endpoint_clusters[cluster_index]; - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t block_index = cluster_indices[cluster_indices_iter] >> 1; - const uint32_t subblock_index = cluster_indices[cluster_indices_iter] & 1; - - block_clusters[block_index][subblock_index] = cluster_index; - - } // cluster_indices_iter - } - - //---------------------------------------------------------- - - // Create a new endpoint clusterization - - interval_timer tm; - tm.start(); - - uint_vec best_cluster_indices(m_total_blocks); - - bool use_cpu = true; - // TODO: Support non-hierarchical endpoint codebooks here - if (m_params.m_pOpenCL_context && m_use_hierarchical_endpoint_codebooks) - { - // For the OpenCL kernel, we order the parent endpoint clusters by smallest to largest for efficiency. - // We also prepare an array of block info structs that point into this new parent endpoint cluster array. - const uint32_t total_parent_clusters = m_endpoint_clusters_within_each_parent_cluster.size(); - - basisu::vector cl_block_info_structs(m_total_blocks); - - // the size of each parent cluster, in total clusters - uint_vec parent_cluster_sizes(total_parent_clusters); - for (uint32_t i = 0; i < total_parent_clusters; i++) - parent_cluster_sizes[i] = m_endpoint_clusters_within_each_parent_cluster[i].size(); - - uint_vec first_parent_cluster_ofs(total_parent_clusters); - uint32_t cur_ofs = 0; - for (uint32_t i = 0; i < total_parent_clusters; i++) - { - first_parent_cluster_ofs[i] = cur_ofs; - - cur_ofs += parent_cluster_sizes[i]; - } - - // Note: total_actual_endpoint_clusters is not necessarly equal to m_endpoint_clusters.size(), because clusters may live in multiple parent clusters after the first refinement step. - BASISU_FRONTEND_VERIFY(cur_ofs >= m_endpoint_clusters.size()); - const uint32_t total_actual_endpoint_clusters = cur_ofs; - basisu::vector cl_endpoint_cluster_structs(total_actual_endpoint_clusters); - - for (uint32_t i = 0; i < total_parent_clusters; i++) - { - const uint32_t dst_ofs = first_parent_cluster_ofs[i]; - - const uint32_t parent_cluster_size = parent_cluster_sizes[i]; - - assert(m_endpoint_clusters_within_each_parent_cluster[i].size() == parent_cluster_size); - - for (uint32_t j = 0; j < parent_cluster_size; j++) - { - const uint32_t endpoint_cluster_index = m_endpoint_clusters_within_each_parent_cluster[i][j]; - - color_rgba cluster_etc_base_color(m_endpoint_cluster_etc_params[endpoint_cluster_index].m_color_unscaled[0]); - uint32_t cluster_etc_inten = m_endpoint_cluster_etc_params[endpoint_cluster_index].m_inten_table[0]; - - cl_endpoint_cluster_structs[dst_ofs + j].m_unscaled_color = cluster_etc_base_color; - cl_endpoint_cluster_structs[dst_ofs + j].m_etc_inten = (uint8_t)cluster_etc_inten; - cl_endpoint_cluster_structs[dst_ofs + j].m_cluster_index = (uint16_t)endpoint_cluster_index; - } - } - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t block_parent_endpoint_cluster_index = m_block_parent_endpoint_cluster[block_index]; - - cl_block_info_structs[block_index].m_num_clusters = (uint16_t)(parent_cluster_sizes[block_parent_endpoint_cluster_index]); - cl_block_info_structs[block_index].m_first_cluster_ofs = (uint16_t)(first_parent_cluster_ofs[block_parent_endpoint_cluster_index]); - - const uint32_t block_cluster_index = block_clusters[block_index][0]; - cl_block_info_structs[block_index].m_cur_cluster_index = (uint16_t)block_cluster_index; - cl_block_info_structs[block_index].m_cur_cluster_etc_inten = (uint8_t)m_endpoint_cluster_etc_params[block_cluster_index].m_inten_table[0]; - } - - uint_vec block_cluster_indices(m_total_blocks); - for (uint32_t i = 0; i < m_total_blocks; i++) - block_cluster_indices[i] = block_clusters[i][0]; - - uint_vec sorted_block_indices(m_total_blocks); - indirect_sort(m_total_blocks, sorted_block_indices.data(), block_cluster_indices.data()); - - bool status = opencl_refine_endpoint_clusterization( - m_params.m_pOpenCL_context, - cl_block_info_structs.data(), - total_actual_endpoint_clusters, - cl_endpoint_cluster_structs.data(), - sorted_block_indices.data(), - best_cluster_indices.data(), - m_params.m_perceptual); - - if (status) - { - use_cpu = false; - } - else - { - error_printf("basisu_frontend::refine_endpoint_clusterization: opencl_refine_endpoint_clusterization() failed! Using CPU.\n"); - m_params.m_pOpenCL_context = nullptr; - m_opencl_failed = true; - } - } - - if (use_cpu) - { - const uint32_t N = 1024; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index, &best_cluster_indices, &block_clusters] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const uint32_t cluster_index = block_clusters[block_index][0]; - BASISU_FRONTEND_VERIFY(cluster_index == block_clusters[block_index][1]); - - const color_rgba* pSubblock_pixels = get_source_pixel_block(block_index).get_ptr(); - const uint32_t num_subblock_pixels = 16; - - uint64_t best_cluster_err = INT64_MAX; - uint32_t best_cluster_index = 0; - - const uint32_t block_parent_endpoint_cluster_index = m_block_parent_endpoint_cluster.size() ? m_block_parent_endpoint_cluster[block_index] : 0; - const uint_vec* pCluster_indices = m_endpoint_clusters_within_each_parent_cluster.size() ? &m_endpoint_clusters_within_each_parent_cluster[block_parent_endpoint_cluster_index] : nullptr; - - const uint32_t total_clusters = m_use_hierarchical_endpoint_codebooks ? (uint32_t)pCluster_indices->size() : (uint32_t)m_endpoint_clusters.size(); - - for (uint32_t i = 0; i < total_clusters; i++) - { - const uint32_t cluster_iter = m_use_hierarchical_endpoint_codebooks ? (*pCluster_indices)[i] : i; - - color_rgba cluster_etc_base_color(m_endpoint_cluster_etc_params[cluster_iter].m_color_unscaled[0]); - uint32_t cluster_etc_inten = m_endpoint_cluster_etc_params[cluster_iter].m_inten_table[0]; - - uint64_t total_err = 0; - - const uint32_t low_selector = 0;//subblock_etc_params_vec[j].m_low_selectors[0]; - const uint32_t high_selector = 3;//subblock_etc_params_vec[j].m_high_selectors[0]; - color_rgba subblock_colors[4]; - // Can't assign it here - may result in too much error when selector quant occurs - if (cluster_etc_inten > m_endpoint_cluster_etc_params[cluster_index].m_inten_table[0]) - { - total_err = INT64_MAX; - goto skip_cluster; - } - - etc_block::get_block_colors5(subblock_colors, cluster_etc_base_color, cluster_etc_inten); - -#if 0 - for (uint32_t p = 0; p < num_subblock_pixels; p++) - { - uint64_t best_err = UINT64_MAX; - - for (uint32_t r = low_selector; r <= high_selector; r++) - { - uint64_t err = color_distance(m_params.m_perceptual, pSubblock_pixels[p], subblock_colors[r], false); - best_err = minimum(best_err, err); - if (!best_err) - break; - } - - total_err += best_err; - if (total_err > best_cluster_err) - break; - } // p -#else - if (m_params.m_perceptual) - { - if (!g_cpu_supports_sse41) - { - for (uint32_t p = 0; p < num_subblock_pixels; p++) - { - uint64_t best_err = UINT64_MAX; - - for (uint32_t r = low_selector; r <= high_selector; r++) - { - uint64_t err = color_distance(true, pSubblock_pixels[p], subblock_colors[r], false); - best_err = minimum(best_err, err); - if (!best_err) - break; - } - - total_err += best_err; - if (total_err > best_cluster_err) - break; - } // p - } - else - { -#if BASISU_SUPPORT_SSE - find_lowest_error_perceptual_rgb_4_N_sse41((int64_t*)&total_err, subblock_colors, pSubblock_pixels, num_subblock_pixels, best_cluster_err); -#endif - } - } - else - { - if (!g_cpu_supports_sse41) - { - for (uint32_t p = 0; p < num_subblock_pixels; p++) - { - uint64_t best_err = UINT64_MAX; - - for (uint32_t r = low_selector; r <= high_selector; r++) - { - uint64_t err = color_distance(false, pSubblock_pixels[p], subblock_colors[r], false); - best_err = minimum(best_err, err); - if (!best_err) - break; - } - - total_err += best_err; - if (total_err > best_cluster_err) - break; - } // p - } - else - { -#if BASISU_SUPPORT_SSE - find_lowest_error_linear_rgb_4_N_sse41((int64_t*)&total_err, subblock_colors, pSubblock_pixels, num_subblock_pixels, best_cluster_err); -#endif - } - } -#endif - - skip_cluster: - if ((total_err < best_cluster_err) || - ((cluster_iter == cluster_index) && (total_err == best_cluster_err))) - { - best_cluster_err = total_err; - best_cluster_index = cluster_iter; - - if (!best_cluster_err) - break; - } - } // j - - best_cluster_indices[block_index] = best_cluster_index; - - } // block_index - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } // block_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - } // use_cpu - - debug_printf("refine_endpoint_clusterization time: %3.3f secs\n", tm.get_elapsed_secs()); - - basisu::vector > optimized_endpoint_clusters(m_endpoint_clusters.size()); - uint32_t total_subblocks_reassigned = 0; - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t training_vector_index = block_index * 2 + 0; - - const uint32_t orig_cluster_index = block_clusters[block_index][0]; - const uint32_t best_cluster_index = best_cluster_indices[block_index]; - - optimized_endpoint_clusters[best_cluster_index].push_back(training_vector_index); - optimized_endpoint_clusters[best_cluster_index].push_back(training_vector_index + 1); - - if (best_cluster_index != orig_cluster_index) - { - total_subblocks_reassigned++; - } - } - - debug_printf("total_subblocks_reassigned: %u\n", total_subblocks_reassigned); - - m_endpoint_clusters = optimized_endpoint_clusters; - - return total_subblocks_reassigned; - } - - void basisu_frontend::eliminate_redundant_or_empty_endpoint_clusters() - { - debug_printf("eliminate_redundant_or_empty_endpoint_clusters\n"); - - // Step 1: Sort endpoint clusters by the base colors/intens - - uint_vec sorted_endpoint_cluster_indices(m_endpoint_clusters.size()); - for (uint32_t i = 0; i < m_endpoint_clusters.size(); i++) - sorted_endpoint_cluster_indices[i] = i; - - indirect_sort((uint32_t)m_endpoint_clusters.size(), &sorted_endpoint_cluster_indices[0], &m_endpoint_cluster_etc_params[0]); - - basisu::vector > new_endpoint_clusters(m_endpoint_clusters.size()); - basisu::vector new_subblock_etc_params(m_endpoint_clusters.size()); - - for (uint32_t i = 0; i < m_endpoint_clusters.size(); i++) - { - uint32_t j = sorted_endpoint_cluster_indices[i]; - new_endpoint_clusters[i] = m_endpoint_clusters[j]; - new_subblock_etc_params[i] = m_endpoint_cluster_etc_params[j]; - } - - new_endpoint_clusters.swap(m_endpoint_clusters); - new_subblock_etc_params.swap(m_endpoint_cluster_etc_params); - - // Step 2: Eliminate redundant endpoint clusters, or empty endpoint clusters - - new_endpoint_clusters.resize(0); - new_subblock_etc_params.resize(0); - - for (int i = 0; i < (int)m_endpoint_clusters.size(); ) - { - if (!m_endpoint_clusters[i].size()) - { - i++; - continue; - } - - int j; - for (j = i + 1; j < (int)m_endpoint_clusters.size(); j++) - { - if (!(m_endpoint_cluster_etc_params[i] == m_endpoint_cluster_etc_params[j])) - break; - } - - new_endpoint_clusters.push_back(m_endpoint_clusters[i]); - new_subblock_etc_params.push_back(m_endpoint_cluster_etc_params[i]); - - for (int k = i + 1; k < j; k++) - { - append_vector(new_endpoint_clusters.back(), m_endpoint_clusters[k]); - } - - i = j; - } - - if (m_endpoint_clusters.size() != new_endpoint_clusters.size()) - { - if (m_params.m_debug_stats) - debug_printf("Eliminated %u redundant or empty clusters\n", (uint32_t)(m_endpoint_clusters.size() - new_endpoint_clusters.size())); - - m_endpoint_clusters.swap(new_endpoint_clusters); - - m_endpoint_cluster_etc_params.swap(new_subblock_etc_params); - } - } - - void basisu_frontend::create_initial_packed_texture() - { - debug_printf("create_initial_packed_texture\n"); - - interval_timer tm; - tm.start(); - - bool use_cpu = true; - - if ((m_params.m_pOpenCL_context) && (opencl_is_available())) - { - basisu::vector block_etc5_color_intens(m_total_blocks); - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - uint32_t cluster0 = m_block_endpoint_clusters_indices[block_index][0]; - - const color_rgba& color_unscaled = m_endpoint_cluster_etc_params[cluster0].m_color_unscaled[0]; - uint32_t inten = m_endpoint_cluster_etc_params[cluster0].m_inten_table[0]; - - block_etc5_color_intens[block_index].set(color_unscaled.r, color_unscaled.g, color_unscaled.b, inten); - } - - bool status = opencl_determine_selectors(m_params.m_pOpenCL_context, block_etc5_color_intens.data(), - m_encoded_blocks.data(), - m_params.m_perceptual); - if (!status) - { - error_printf("basisu_frontend::create_initial_packed_texture: opencl_determine_selectors() failed! Using CPU.\n"); - m_params.m_pOpenCL_context = nullptr; - m_opencl_failed = true; - } - else - { - use_cpu = false; - } - } - - if (use_cpu) - { - const uint32_t N = 4096; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - uint32_t cluster0 = m_block_endpoint_clusters_indices[block_index][0]; - uint32_t cluster1 = m_block_endpoint_clusters_indices[block_index][1]; - BASISU_FRONTEND_VERIFY(cluster0 == cluster1); - - const color_rgba* pSource_pixels = get_source_pixel_block(block_index).get_ptr(); - - etc_block& blk = m_encoded_blocks[block_index]; - - color_rgba unscaled[2] = { m_endpoint_cluster_etc_params[cluster0].m_color_unscaled[0], m_endpoint_cluster_etc_params[cluster1].m_color_unscaled[0] }; - uint32_t inten[2] = { m_endpoint_cluster_etc_params[cluster0].m_inten_table[0], m_endpoint_cluster_etc_params[cluster1].m_inten_table[0] }; - - blk.set_block_color5(unscaled[0], unscaled[1]); - blk.set_flip_bit(true); - - blk.set_inten_table(0, inten[0]); - blk.set_inten_table(1, inten[1]); - - blk.determine_selectors(pSource_pixels, m_params.m_perceptual); - - } // block_index - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } // block_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - } // use_cpu - - m_orig_encoded_blocks = m_encoded_blocks; - - debug_printf("Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - } - - void basisu_frontend::compute_selector_clusters_within_each_parent_cluster() - { - uint_vec block_selector_cluster_indices(m_total_blocks); - - for (int cluster_index = 0; cluster_index < static_cast(m_selector_cluster_block_indices.size()); cluster_index++) - { - const basisu::vector& cluster_indices = m_selector_cluster_block_indices[cluster_index]; - - for (uint32_t cluster_indices_iter = 0; cluster_indices_iter < cluster_indices.size(); cluster_indices_iter++) - { - const uint32_t block_index = cluster_indices[cluster_indices_iter]; - - block_selector_cluster_indices[block_index] = cluster_index; - - } // cluster_indices_iter - - } // cluster_index - - m_selector_clusters_within_each_parent_cluster.resize(0); - m_selector_clusters_within_each_parent_cluster.resize(m_selector_parent_cluster_block_indices.size()); - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t cluster_index = block_selector_cluster_indices[block_index]; - const uint32_t parent_cluster_index = m_block_parent_selector_cluster[block_index]; - - m_selector_clusters_within_each_parent_cluster[parent_cluster_index].push_back(cluster_index); - } - - for (uint32_t i = 0; i < m_selector_clusters_within_each_parent_cluster.size(); i++) - { - uint_vec &cluster_indices = m_selector_clusters_within_each_parent_cluster[i]; - - BASISU_FRONTEND_VERIFY(cluster_indices.size()); - - vector_sort(cluster_indices); - - auto last = std::unique(cluster_indices.begin(), cluster_indices.end()); - cluster_indices.erase(last, cluster_indices.end()); - } - } - - void basisu_frontend::generate_selector_clusters() - { - debug_printf("generate_selector_clusters\n"); - - typedef tree_vector_quant vec16F_clusterizer; - - vec16F_clusterizer::array_of_weighted_training_vecs training_vecs(m_total_blocks); - - const uint32_t N = 4096; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job( [this, first_index, last_index, &training_vecs] { -#endif - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const etc_block &blk = m_encoded_blocks[block_index]; - - vec16F v; - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - v[x + y * 4] = static_cast(blk.get_selector(x, y)); - - const uint32_t subblock_index = (blk.get_inten_table(0) > blk.get_inten_table(1)) ? 0 : 1; - - color_rgba block_colors[2]; - blk.get_block_low_high_colors(block_colors, subblock_index); - - const uint32_t dist = color_distance(m_params.m_perceptual, block_colors[0], block_colors[1], false); - - const uint32_t cColorDistToWeight = 300; - const uint32_t cMaxWeight = 4096; - uint32_t weight = clamp(dist / cColorDistToWeight, 1, cMaxWeight); - - training_vecs[block_index].first = v; - training_vecs[block_index].second = weight; - - } // block_index - -#ifndef __EMSCRIPTEN__ - } ); -#endif - - } // block_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - vec16F_clusterizer selector_clusterizer; - for (uint32_t i = 0; i < m_total_blocks; i++) - selector_clusterizer.add_training_vec(training_vecs[i].first, training_vecs[i].second); - - const int selector_parent_codebook_size = (m_params.m_compression_level <= 1) ? BASISU_SELECTOR_PARENT_CODEBOOK_SIZE_COMP_LEVEL_01 : BASISU_SELECTOR_PARENT_CODEBOOK_SIZE_COMP_LEVEL_DEFAULT; - const uint32_t parent_codebook_size = (m_params.m_max_selector_clusters >= 256) ? selector_parent_codebook_size : 0; - debug_printf("Using selector parent codebook size %u\n", parent_codebook_size); - - uint32_t max_threads = 0; - max_threads = m_params.m_multithreaded ? minimum(std::thread::hardware_concurrency(), cMaxCodebookCreationThreads) : 0; - if (m_params.m_pJob_pool) - max_threads = minimum((int)m_params.m_pJob_pool->get_total_threads(), max_threads); - - bool status = generate_hierarchical_codebook_threaded(selector_clusterizer, - m_params.m_max_selector_clusters, m_use_hierarchical_selector_codebooks ? parent_codebook_size : 0, - m_selector_cluster_block_indices, - m_selector_parent_cluster_block_indices, - max_threads, m_params.m_pJob_pool, false); - BASISU_FRONTEND_VERIFY(status); - - if (m_use_hierarchical_selector_codebooks) - { - if (!m_selector_parent_cluster_block_indices.size()) - { - m_selector_parent_cluster_block_indices.resize(0); - m_selector_parent_cluster_block_indices.resize(1); - for (uint32_t i = 0; i < m_total_blocks; i++) - m_selector_parent_cluster_block_indices[0].push_back(i); - } - - BASISU_ASSUME(BASISU_SELECTOR_PARENT_CODEBOOK_SIZE_COMP_LEVEL_01 <= UINT8_MAX); - BASISU_ASSUME(BASISU_SELECTOR_PARENT_CODEBOOK_SIZE_COMP_LEVEL_DEFAULT <= UINT8_MAX); - - m_block_parent_selector_cluster.resize(0); - m_block_parent_selector_cluster.resize(m_total_blocks); - vector_set_all(m_block_parent_selector_cluster, 0xFF); - - for (uint32_t parent_cluster_index = 0; parent_cluster_index < m_selector_parent_cluster_block_indices.size(); parent_cluster_index++) - { - const uint_vec &cluster = m_selector_parent_cluster_block_indices[parent_cluster_index]; - for (uint32_t j = 0; j < cluster.size(); j++) - m_block_parent_selector_cluster[cluster[j]] = static_cast(parent_cluster_index); - } - for (uint32_t i = 0; i < m_total_blocks; i++) - { - BASISU_FRONTEND_VERIFY(m_block_parent_selector_cluster[i] != 0xFF); - } - - // Ensure that all the blocks within each cluster are all in the same parent cluster, or something is very wrong. - for (uint32_t cluster_index = 0; cluster_index < m_selector_cluster_block_indices.size(); cluster_index++) - { - const uint_vec &cluster = m_selector_cluster_block_indices[cluster_index]; - - uint32_t parent_cluster_index = 0; - for (uint32_t j = 0; j < cluster.size(); j++) - { - const uint32_t block_index = cluster[j]; - if (!j) - { - parent_cluster_index = m_block_parent_selector_cluster[block_index]; - } - else - { - BASISU_FRONTEND_VERIFY(m_block_parent_selector_cluster[block_index] == parent_cluster_index); - } - } - } - } - - debug_printf("Total selector clusters: %u, total parent selector clusters: %u\n", (uint32_t)m_selector_cluster_block_indices.size(), (uint32_t)m_selector_parent_cluster_block_indices.size()); - } - - void basisu_frontend::create_optimized_selector_codebook(uint32_t iter) - { - debug_printf("create_optimized_selector_codebook\n"); - - interval_timer tm; - tm.start(); - - const uint32_t total_selector_clusters = (uint32_t)m_selector_cluster_block_indices.size(); - - debug_printf("Total selector clusters (from m_selector_cluster_block_indices.size()): %u\n", (uint32_t)m_selector_cluster_block_indices.size()); - - m_optimized_cluster_selectors.resize(total_selector_clusters); - - // For each selector codebook entry, and for each of the 4x4 selectors, determine which selector minimizes the error across all the blocks that use that quantized selector. - const uint32_t N = 256; - for (uint32_t cluster_index_iter = 0; cluster_index_iter < total_selector_clusters; cluster_index_iter += N) - { - const uint32_t first_index = cluster_index_iter; - const uint32_t last_index = minimum((uint32_t)total_selector_clusters, cluster_index_iter + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job([this, first_index, last_index] { -#endif - - for (uint32_t cluster_index = first_index; cluster_index < last_index; cluster_index++) - { - const basisu::vector& cluster_block_indices = m_selector_cluster_block_indices[cluster_index]; - - if (!cluster_block_indices.size()) - continue; - - uint64_t overall_best_err = 0; - - uint64_t total_err[4][4][4]; - clear_obj(total_err); - - for (uint32_t cluster_block_index = 0; cluster_block_index < cluster_block_indices.size(); cluster_block_index++) - { - const uint32_t block_index = cluster_block_indices[cluster_block_index]; - - const etc_block& blk = m_encoded_blocks[block_index]; - - color_rgba blk_colors[4]; - blk.get_block_colors(blk_colors, 0); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const color_rgba& orig_color = get_source_pixel_block(block_index)(x, y); - - if (m_params.m_perceptual) - { - for (uint32_t s = 0; s < 4; s++) - total_err[y][x][s] += color_distance(true, blk_colors[s], orig_color, false); - } - else - { - for (uint32_t s = 0; s < 4; s++) - total_err[y][x][s] += color_distance(false, blk_colors[s], orig_color, false); - } - } // x - } // y - - } // cluster_block_index - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint64_t best_err = total_err[y][x][0]; - uint8_t best_sel = 0; - - for (uint32_t s = 1; s < 4; s++) - { - if (total_err[y][x][s] < best_err) - { - best_err = total_err[y][x][s]; - best_sel = (uint8_t)s; - } - } - - m_optimized_cluster_selectors[cluster_index].set_selector(x, y, best_sel); - - overall_best_err += best_err; - } // x - } // y - - } // cluster_index - -#ifndef __EMSCRIPTEN__ - }); -#endif - - } // cluster_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - debug_printf("Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - - if (m_params.m_debug_images) - { - uint32_t max_selector_cluster_size = 0; - - for (uint32_t i = 0; i < m_selector_cluster_block_indices.size(); i++) - max_selector_cluster_size = maximum(max_selector_cluster_size, (uint32_t)m_selector_cluster_block_indices[i].size()); - - if ((max_selector_cluster_size * 5) < 32768) - { - const uint32_t x_spacer_len = 16; - image selector_cluster_vis(x_spacer_len + max_selector_cluster_size * 5, (uint32_t)m_selector_cluster_block_indices.size() * 5); - - for (uint32_t selector_cluster_index = 0; selector_cluster_index < m_selector_cluster_block_indices.size(); selector_cluster_index++) - { - const basisu::vector &cluster_block_indices = m_selector_cluster_block_indices[selector_cluster_index]; - - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - selector_cluster_vis.set_clipped(x_spacer_len + x - 12, selector_cluster_index * 5 + y, color_rgba((m_optimized_cluster_selectors[selector_cluster_index].get_selector(x, y) * 255) / 3)); - - for (uint32_t i = 0; i < cluster_block_indices.size(); i++) - { - uint32_t block_index = cluster_block_indices[i]; - - const etc_block &blk = m_orig_encoded_blocks[block_index]; - - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - selector_cluster_vis.set_clipped(x_spacer_len + x + 5 * i, selector_cluster_index * 5 + y, color_rgba((blk.get_selector(x, y) * 255) / 3)); - } - } - - char buf[256]; - snprintf(buf, sizeof(buf), "selector_cluster_vis_%u.png", iter); - save_png(buf, selector_cluster_vis); - } - } - } - - // For each block: Determine which quantized selectors best encode that block, given its quantized endpoints. - // Note that this method may leave some empty clusters (i.e. arrays with no block indices), including at the end. - void basisu_frontend::find_optimal_selector_clusters_for_each_block() - { - debug_printf("find_optimal_selector_clusters_for_each_block\n"); - - interval_timer tm; - tm.start(); - - if (m_params.m_validate) - { - // Sanity checks - BASISU_FRONTEND_VERIFY(m_selector_cluster_block_indices.size() == m_optimized_cluster_selectors.size()); - for (uint32_t i = 0; i < m_selector_clusters_within_each_parent_cluster.size(); i++) - { - for (uint32_t j = 0; j < m_selector_clusters_within_each_parent_cluster[i].size(); j++) - { - BASISU_FRONTEND_VERIFY(m_selector_clusters_within_each_parent_cluster[i][j] < m_optimized_cluster_selectors.size()); - } - } - } - - m_block_selector_cluster_index.resize(m_total_blocks); - - if (m_params.m_compression_level == 0) - { - // Just leave the blocks in their original selector clusters. - for (uint32_t selector_cluster_index = 0; selector_cluster_index < m_selector_cluster_block_indices.size(); selector_cluster_index++) - { - for (uint32_t j = 0; j < m_selector_cluster_block_indices[selector_cluster_index].size(); j++) - { - const uint32_t block_index = m_selector_cluster_block_indices[selector_cluster_index][j]; - - m_block_selector_cluster_index[block_index] = selector_cluster_index; - - etc_block& blk = m_encoded_blocks[block_index]; - blk.set_raw_selector_bits(m_optimized_cluster_selectors[selector_cluster_index].get_raw_selector_bits()); - } - } - - debug_printf("Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - - return; - } - - bool use_cpu = true; - - if ((m_params.m_pOpenCL_context) && m_use_hierarchical_selector_codebooks) - { - const uint32_t num_parent_clusters = m_selector_clusters_within_each_parent_cluster.size(); - - basisu::vector selector_structs; - selector_structs.reserve(m_optimized_cluster_selectors.size()); - - uint_vec parent_selector_cluster_offsets(num_parent_clusters); - - uint_vec selector_cluster_indices; - selector_cluster_indices.reserve(m_optimized_cluster_selectors.size()); - - uint32_t cur_ofs = 0; - for (uint32_t parent_index = 0; parent_index < num_parent_clusters; parent_index++) - { - parent_selector_cluster_offsets[parent_index] = cur_ofs; - - for (uint32_t j = 0; j < m_selector_clusters_within_each_parent_cluster[parent_index].size(); j++) - { - const uint32_t selector_cluster_index = m_selector_clusters_within_each_parent_cluster[parent_index][j]; - - uint32_t sel_bits = 0; - for (uint32_t p = 0; p < 16; p++) - sel_bits |= (m_optimized_cluster_selectors[selector_cluster_index].get_selector(p & 3, p >> 2) << (p * 2)); - - selector_structs.enlarge(1)->m_packed_selectors = sel_bits; - - selector_cluster_indices.push_back(selector_cluster_index); - } - - cur_ofs += m_selector_clusters_within_each_parent_cluster[parent_index].size(); - } - - const uint32_t total_input_selectors = cur_ofs; - - basisu::vector block_structs(m_total_blocks); - for (uint32_t i = 0; i < m_total_blocks; i++) - { - const uint32_t parent_selector_cluster = m_block_parent_selector_cluster[i]; - - const etc_block& blk = m_encoded_blocks[i]; - blk.unpack_color5(block_structs[i].m_etc_color5_inten, blk.get_base5_color(), false); - - block_structs[i].m_etc_color5_inten.a = (uint8_t)blk.get_inten_table(0); - block_structs[i].m_first_selector = parent_selector_cluster_offsets[parent_selector_cluster]; - block_structs[i].m_num_selectors = m_selector_clusters_within_each_parent_cluster[parent_selector_cluster].size(); - } - - uint_vec output_selector_cluster_indices(m_total_blocks); - - bool status = opencl_find_optimal_selector_clusters_for_each_block( - m_params.m_pOpenCL_context, - block_structs.data(), - total_input_selectors, - selector_structs.data(), - selector_cluster_indices.data(), - output_selector_cluster_indices.data(), - m_params.m_perceptual); - - if (!status) - { - error_printf("basisu_frontend::find_optimal_selector_clusters_for_each_block: opencl_find_optimal_selector_clusters_for_each_block() failed! Using CPU.\n"); - m_params.m_pOpenCL_context = nullptr; - m_opencl_failed = true; - } - else - { - for (uint32_t i = 0; i < m_selector_cluster_block_indices.size(); i++) - { - m_selector_cluster_block_indices[i].resize(0); - m_selector_cluster_block_indices[i].reserve(128); - } - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - etc_block& blk = m_encoded_blocks[block_index]; - - uint32_t best_cluster_index = output_selector_cluster_indices[block_index]; - - blk.set_raw_selector_bits(m_optimized_cluster_selectors[best_cluster_index].get_raw_selector_bits()); - - m_block_selector_cluster_index[block_index] = best_cluster_index; - - vector_ensure_element_is_valid(m_selector_cluster_block_indices, best_cluster_index); - m_selector_cluster_block_indices[best_cluster_index].push_back(block_index); - } - - use_cpu = false; - } - } - - if (use_cpu) - { - basisu::vector unpacked_optimized_cluster_selectors(16 * m_optimized_cluster_selectors.size()); - for (uint32_t cluster_index = 0; cluster_index < m_optimized_cluster_selectors.size(); cluster_index++) - { - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - unpacked_optimized_cluster_selectors[cluster_index * 16 + y * 4 + x] = (uint8_t)m_optimized_cluster_selectors[cluster_index].get_selector(x, y); - } - } - } - - const uint32_t N = 2048; - for (uint32_t block_index_iter = 0; block_index_iter < m_total_blocks; block_index_iter += N) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(m_total_blocks, first_index + N); - - #ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job( [this, first_index, last_index, &unpacked_optimized_cluster_selectors] { - #endif - - int prev_best_cluster_index = 0; - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const pixel_block& block = get_source_pixel_block(block_index); - - etc_block& blk = m_encoded_blocks[block_index]; - - if ((block_index > first_index) && (block == get_source_pixel_block(block_index - 1))) - { - blk.set_raw_selector_bits(m_optimized_cluster_selectors[prev_best_cluster_index].get_raw_selector_bits()); - - m_block_selector_cluster_index[block_index] = prev_best_cluster_index; - - continue; - } - - const color_rgba* pBlock_pixels = block.get_ptr(); - - color_rgba trial_block_colors[4]; - blk.get_block_colors_etc1s(trial_block_colors); - - // precompute errors for the i-th block pixel and selector sel: [sel][i] - uint32_t trial_errors[4][16]; - - if (m_params.m_perceptual) - { - for (uint32_t sel = 0; sel < 4; ++sel) - for (uint32_t i = 0; i < 16; ++i) - trial_errors[sel][i] = color_distance(true, pBlock_pixels[i], trial_block_colors[sel], false); - } - else - { - for (uint32_t sel = 0; sel < 4; ++sel) - for (uint32_t i = 0; i < 16; ++i) - trial_errors[sel][i] = color_distance(false, pBlock_pixels[i], trial_block_colors[sel], false); - } - - // Compute the minimum possible errors (given any selectors) for pixels 0-15 - uint64_t min_possible_error_0_15 = 0; - for (uint32_t i = 0; i < 16; i++) - min_possible_error_0_15 += basisu::minimum(trial_errors[0][i], trial_errors[1][i], trial_errors[2][i], trial_errors[3][i]); - - // Compute the minimum possible errors (given any selectors) for pixels 4-15 - uint64_t min_possible_error_4_15 = 0; - for (uint32_t i = 4; i < 16; i++) - min_possible_error_4_15 += basisu::minimum(trial_errors[0][i], trial_errors[1][i], trial_errors[2][i], trial_errors[3][i]); - - // Compute the minimum possible errors (given any selectors) for pixels 8-15 - uint64_t min_possible_error_8_15 = 0; - for (uint32_t i = 8; i < 16; i++) - min_possible_error_8_15 += basisu::minimum(trial_errors[0][i], trial_errors[1][i], trial_errors[2][i], trial_errors[3][i]); - - // Compute the minimum possible errors (given any selectors) for pixels 12-15 - uint64_t min_possible_error_12_15 = 0; - for (uint32_t i = 12; i < 16; i++) - min_possible_error_12_15 += basisu::minimum(trial_errors[0][i], trial_errors[1][i], trial_errors[2][i], trial_errors[3][i]); - - uint64_t best_cluster_err = INT64_MAX; - uint32_t best_cluster_index = 0; - - const uint32_t parent_selector_cluster = m_block_parent_selector_cluster.size() ? m_block_parent_selector_cluster[block_index] : 0; - const uint_vec *pCluster_indices = m_selector_clusters_within_each_parent_cluster.size() ? &m_selector_clusters_within_each_parent_cluster[parent_selector_cluster] : nullptr; - - const uint32_t total_clusters = m_use_hierarchical_selector_codebooks ? (uint32_t)pCluster_indices->size() : (uint32_t)m_selector_cluster_block_indices.size(); - - #if 0 - for (uint32_t cluster_iter = 0; cluster_iter < total_clusters; cluster_iter++) - { - const uint32_t cluster_index = m_use_hierarchical_selector_codebooks ? (*pCluster_indices)[cluster_iter] : cluster_iter; - - const etc_block& cluster_blk = m_optimized_cluster_selectors[cluster_index]; - - uint64_t trial_err = 0; - for (int y = 0; y < 4; y++) - { - for (int x = 0; x < 4; x++) - { - const uint32_t sel = cluster_blk.get_selector(x, y); - - trial_err += color_distance(m_params.m_perceptual, trial_block_colors[sel], pBlock_pixels[x + y * 4], false); - if (trial_err > best_cluster_err) - goto early_out; - } - } - - if (trial_err < best_cluster_err) - { - best_cluster_err = trial_err; - best_cluster_index = cluster_index; - if (!best_cluster_err) - break; - } - - early_out: - ; - } - #else - for (uint32_t cluster_iter = 0; cluster_iter < total_clusters; cluster_iter++) - { - const uint32_t cluster_index = m_use_hierarchical_selector_codebooks ? (*pCluster_indices)[cluster_iter] : cluster_iter; - - const uint8_t* pSels = &unpacked_optimized_cluster_selectors[cluster_index * 16]; - - uint64_t trial_err = (uint64_t)trial_errors[pSels[0]][0] + trial_errors[pSels[1]][1] + trial_errors[pSels[2]][2] + trial_errors[pSels[3]][3]; - if ((trial_err + min_possible_error_4_15) >= best_cluster_err) - continue; - - trial_err += (uint64_t)trial_errors[pSels[4]][4] + trial_errors[pSels[5]][5] + trial_errors[pSels[6]][6] + trial_errors[pSels[7]][7]; - if ((trial_err + min_possible_error_8_15) >= best_cluster_err) - continue; - - trial_err += (uint64_t)trial_errors[pSels[8]][8] + trial_errors[pSels[9]][9] + trial_errors[pSels[10]][10] + trial_errors[pSels[11]][11]; - if ((trial_err + min_possible_error_12_15) >= best_cluster_err) - continue; - - trial_err += (uint64_t)trial_errors[pSels[12]][12] + trial_errors[pSels[13]][13] + trial_errors[pSels[14]][14] + trial_errors[pSels[15]][15]; - - if (trial_err < best_cluster_err) - { - best_cluster_err = trial_err; - best_cluster_index = cluster_index; - if (best_cluster_err == min_possible_error_0_15) - break; - } - - } // cluster_iter - #endif - - blk.set_raw_selector_bits(m_optimized_cluster_selectors[best_cluster_index].get_raw_selector_bits()); - - m_block_selector_cluster_index[block_index] = best_cluster_index; - - prev_best_cluster_index = best_cluster_index; - - } // block_index - - #ifndef __EMSCRIPTEN__ - } ); - #endif - - } // block_index_iter - - #ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); - #endif - - for (uint32_t i = 0; i < m_selector_cluster_block_indices.size(); i++) - { - m_selector_cluster_block_indices[i].resize(0); - m_selector_cluster_block_indices[i].reserve(128); - } - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - const uint32_t best_cluster_index = m_block_selector_cluster_index[block_index]; - - vector_ensure_element_is_valid(m_selector_cluster_block_indices, best_cluster_index); - m_selector_cluster_block_indices[best_cluster_index].push_back(block_index); - } - - } // if (use_cpu) - - debug_printf("Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - } - - // TODO: Remove old ETC1 specific stuff, and thread this. - uint32_t basisu_frontend::refine_block_endpoints_given_selectors() - { - debug_printf("refine_block_endpoints_given_selectors\n"); - - for (int block_index = 0; block_index < static_cast(m_total_blocks); block_index++) - { - //uint32_t selector_cluster = m_block_selector_cluster_index(block_x, block_y); - vec2U &endpoint_clusters = m_block_endpoint_clusters_indices[block_index]; - - m_endpoint_cluster_etc_params[endpoint_clusters[0]].m_subblocks.push_back(block_index * 2); - - m_endpoint_cluster_etc_params[endpoint_clusters[1]].m_subblocks.push_back(block_index * 2 + 1); - } - - uint32_t total_subblocks_refined = 0; - uint32_t total_subblocks_examined = 0; - - for (uint32_t endpoint_cluster_index = 0; endpoint_cluster_index < m_endpoint_cluster_etc_params.size(); endpoint_cluster_index++) - { - endpoint_cluster_etc_params &subblock_params = m_endpoint_cluster_etc_params[endpoint_cluster_index]; - - const uint_vec &subblocks = subblock_params.m_subblocks; - //uint32_t total_pixels = subblock.m_subblocks.size() * 8; - - basisu::vector subblock_colors[2]; // [use_individual_mode] - uint8_vec subblock_selectors[2]; - - uint64_t cur_subblock_err[2] = { 0, 0 }; - - for (uint32_t subblock_iter = 0; subblock_iter < subblocks.size(); subblock_iter++) - { - uint32_t training_vector_index = subblocks[subblock_iter]; - - uint32_t block_index = training_vector_index >> 1; - uint32_t subblock_index = training_vector_index & 1; - const bool is_flipped = true; - - const etc_block &blk = m_encoded_blocks[block_index]; - - const bool use_individual_mode = !blk.get_diff_bit(); - - const color_rgba *pSource_block_pixels = get_source_pixel_block(block_index).get_ptr(); - - color_rgba unpacked_block_pixels[16]; - unpack_etc1(blk, unpacked_block_pixels); - - for (uint32_t i = 0; i < 8; i++) - { - const uint32_t pixel_index = g_etc1_pixel_indices[is_flipped][subblock_index][i]; - const etc_coord2 &coords = g_etc1_pixel_coords[is_flipped][subblock_index][i]; - - subblock_colors[use_individual_mode].push_back(pSource_block_pixels[pixel_index]); - - cur_subblock_err[use_individual_mode] += color_distance(m_params.m_perceptual, pSource_block_pixels[pixel_index], unpacked_block_pixels[pixel_index], false); - - subblock_selectors[use_individual_mode].push_back(static_cast(blk.get_selector(coords.m_x, coords.m_y))); - } - } // subblock_iter - - etc1_optimizer::results cluster_optimizer_results[2]; - bool results_valid[2] = { false, false }; - - clear_obj(cluster_optimizer_results); - - basisu::vector cluster_selectors[2]; - - for (uint32_t use_individual_mode = 0; use_individual_mode < 2; use_individual_mode++) - { - const uint32_t total_pixels = (uint32_t)subblock_colors[use_individual_mode].size(); - - if (!total_pixels) - continue; - - total_subblocks_examined += total_pixels / 8; - - etc1_optimizer optimizer; - etc1_solution_coordinates solutions[2]; - - etc1_optimizer::params cluster_optimizer_params; - cluster_optimizer_params.m_num_src_pixels = total_pixels; - cluster_optimizer_params.m_pSrc_pixels = &subblock_colors[use_individual_mode][0]; - - cluster_optimizer_params.m_use_color4 = use_individual_mode != 0; - cluster_optimizer_params.m_perceptual = m_params.m_perceptual; - - cluster_optimizer_params.m_pForce_selectors = &subblock_selectors[use_individual_mode][0]; - cluster_optimizer_params.m_quality = cETCQualityUber; - - cluster_selectors[use_individual_mode].resize(total_pixels); - - cluster_optimizer_results[use_individual_mode].m_n = total_pixels; - cluster_optimizer_results[use_individual_mode].m_pSelectors = &cluster_selectors[use_individual_mode][0]; - - optimizer.init(cluster_optimizer_params, cluster_optimizer_results[use_individual_mode]); - - if (!optimizer.compute()) - continue; - - if (cluster_optimizer_results[use_individual_mode].m_error < cur_subblock_err[use_individual_mode]) - results_valid[use_individual_mode] = true; - - } // use_individual_mode - - for (uint32_t use_individual_mode = 0; use_individual_mode < 2; use_individual_mode++) - { - if (!results_valid[use_individual_mode]) - continue; - - uint32_t num_passes = use_individual_mode ? 1 : 2; - - bool all_passed5 = true; - - for (uint32_t pass = 0; pass < num_passes; pass++) - { - for (uint32_t subblock_iter = 0; subblock_iter < subblocks.size(); subblock_iter++) - { - const uint32_t training_vector_index = subblocks[subblock_iter]; - - const uint32_t block_index = training_vector_index >> 1; - const uint32_t subblock_index = training_vector_index & 1; - //const bool is_flipped = true; - - etc_block &blk = m_encoded_blocks[block_index]; - - if (!blk.get_diff_bit() != static_cast(use_individual_mode != 0)) - continue; - - if (use_individual_mode) - { - blk.set_base4_color(subblock_index, etc_block::pack_color4(cluster_optimizer_results[1].m_block_color_unscaled, false)); - blk.set_inten_table(subblock_index, cluster_optimizer_results[1].m_block_inten_table); - - subblock_params.m_color_error[1] = cluster_optimizer_results[1].m_error; - subblock_params.m_inten_table[1] = cluster_optimizer_results[1].m_block_inten_table; - subblock_params.m_color_unscaled[1] = cluster_optimizer_results[1].m_block_color_unscaled; - - total_subblocks_refined++; - } - else - { - const uint16_t base_color5 = blk.get_base5_color(); - const uint16_t delta_color3 = blk.get_delta3_color(); - - uint32_t r[2], g[2], b[2]; - etc_block::unpack_color5(r[0], g[0], b[0], base_color5, false); - bool success = etc_block::unpack_color5(r[1], g[1], b[1], base_color5, delta_color3, false); - assert(success); - BASISU_NOTE_UNUSED(success); - - r[subblock_index] = cluster_optimizer_results[0].m_block_color_unscaled.r; - g[subblock_index] = cluster_optimizer_results[0].m_block_color_unscaled.g; - b[subblock_index] = cluster_optimizer_results[0].m_block_color_unscaled.b; - - color_rgba colors[2] = { color_rgba(r[0], g[0], b[0], 255), color_rgba(r[1], g[1], b[1], 255) }; - - if (!etc_block::try_pack_color5_delta3(colors)) - { - all_passed5 = false; - break; - } - - if ((pass == 1) && (all_passed5)) - { - blk.set_block_color5(colors[0], colors[1]); - blk.set_inten_table(subblock_index, cluster_optimizer_results[0].m_block_inten_table); - - subblock_params.m_color_error[0] = cluster_optimizer_results[0].m_error; - subblock_params.m_inten_table[0] = cluster_optimizer_results[0].m_block_inten_table; - subblock_params.m_color_unscaled[0] = cluster_optimizer_results[0].m_block_color_unscaled; - - total_subblocks_refined++; - } - } - - } // subblock_iter - - } // pass - - } // use_individual_mode - - } // endpoint_cluster_index - - if (m_params.m_debug_stats) - debug_printf("Total subblock endpoints refined: %u (%3.1f%%)\n", total_subblocks_refined, total_subblocks_refined * 100.0f / total_subblocks_examined); - - return total_subblocks_refined; - } - - void basisu_frontend::dump_endpoint_clusterization_visualization(const char *pFilename, bool vis_endpoint_colors) - { - debug_printf("dump_endpoint_clusterization_visualization\n"); - - uint32_t max_endpoint_cluster_size = 0; - - basisu::vector cluster_sizes(m_endpoint_clusters.size()); - basisu::vector sorted_cluster_indices(m_endpoint_clusters.size()); - for (uint32_t i = 0; i < m_endpoint_clusters.size(); i++) - { - max_endpoint_cluster_size = maximum(max_endpoint_cluster_size, (uint32_t)m_endpoint_clusters[i].size()); - cluster_sizes[i] = (uint32_t)m_endpoint_clusters[i].size(); - } - - if (!max_endpoint_cluster_size) - return; - - for (uint32_t i = 0; i < m_endpoint_clusters.size(); i++) - sorted_cluster_indices[i] = i; - - //indexed_heap_sort(endpoint_clusters.size(), cluster_sizes.get_ptr(), sorted_cluster_indices.get_ptr()); - - image endpoint_cluster_vis(12 + minimum(max_endpoint_cluster_size, 2048) * 5, (uint32_t)m_endpoint_clusters.size() * 3); - - for (uint32_t unsorted_cluster_iter = 0; unsorted_cluster_iter < m_endpoint_clusters.size(); unsorted_cluster_iter++) - { - const uint32_t cluster_iter = sorted_cluster_indices[unsorted_cluster_iter]; - - etc_block blk; - blk.clear(); - blk.set_flip_bit(false); - blk.set_diff_bit(true); - blk.set_inten_tables_etc1s(m_endpoint_cluster_etc_params[cluster_iter].m_inten_table[0]); - blk.set_base5_color(etc_block::pack_color5(m_endpoint_cluster_etc_params[cluster_iter].m_color_unscaled[0], false)); - - color_rgba blk_colors[4]; - blk.get_block_colors(blk_colors, 0); - for (uint32_t i = 0; i < 4; i++) - endpoint_cluster_vis.fill_box(i * 2, 3 * unsorted_cluster_iter, 2, 2, blk_colors[i]); - - for (uint32_t subblock_iter = 0; subblock_iter < m_endpoint_clusters[cluster_iter].size(); subblock_iter++) - { - uint32_t training_vector_index = m_endpoint_clusters[cluster_iter][subblock_iter]; - - const uint32_t block_index = training_vector_index >> 1; - const uint32_t subblock_index = training_vector_index & 1; - - const etc_block& blk2 = m_etc1_blocks_etc1s[block_index]; - - const color_rgba *pBlock_pixels = get_source_pixel_block(block_index).get_ptr(); - - color_rgba subblock_pixels[8]; - - if (vis_endpoint_colors) - { - color_rgba colors[2]; - blk2.get_block_low_high_colors(colors, subblock_index); - for (uint32_t i = 0; i < 8; i++) - subblock_pixels[i] = colors[subblock_index]; - } - else - { - for (uint32_t i = 0; i < 8; i++) - subblock_pixels[i] = pBlock_pixels[g_etc1_pixel_indices[blk2.get_flip_bit()][subblock_index][i]]; - } - - endpoint_cluster_vis.set_block_clipped(subblock_pixels, 12 + 5 * subblock_iter, 3 * unsorted_cluster_iter, 4, 2); - } - } - - save_png(pFilename, endpoint_cluster_vis); - debug_printf("Wrote debug visualization file %s\n", pFilename); - } - - void basisu_frontend::finalize() - { - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { - for (uint32_t subblock_index = 0; subblock_index < 2; subblock_index++) - { - const uint32_t endpoint_cluster_index = get_subblock_endpoint_cluster_index(block_index, subblock_index); - - m_endpoint_cluster_etc_params[endpoint_cluster_index].m_color_used[0] = true; - } - } - } - - // The backend has remapped the block endpoints while optimizing the output symbols for better rate distortion performance, so let's go and reoptimize the endpoint codebook. - // This is currently the only place where the backend actually goes and changes the quantization and calls the frontend to fix things up. - // This is basically a bottom up clusterization stage, where some leaves can be combined. - void basisu_frontend::reoptimize_remapped_endpoints(const uint_vec &new_block_endpoints, int_vec &old_to_new_endpoint_cluster_indices, bool optimize_final_codebook, uint_vec *pBlock_selector_indices) - { - debug_printf("reoptimize_remapped_endpoints\n"); - - basisu::vector new_endpoint_cluster_block_indices(m_endpoint_clusters.size()); - for (uint32_t i = 0; i < new_block_endpoints.size(); i++) - new_endpoint_cluster_block_indices[new_block_endpoints[i]].push_back(i); - - basisu::vector cluster_valid(new_endpoint_cluster_block_indices.size()); - basisu::vector cluster_improved(new_endpoint_cluster_block_indices.size()); - - const uint32_t N = 256; - for (uint32_t cluster_index_iter = 0; cluster_index_iter < new_endpoint_cluster_block_indices.size(); cluster_index_iter += N) - { - const uint32_t first_index = cluster_index_iter; - const uint32_t last_index = minimum((uint32_t)new_endpoint_cluster_block_indices.size(), cluster_index_iter + N); - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->add_job( [this, first_index, last_index, &cluster_improved, &cluster_valid, &new_endpoint_cluster_block_indices, &pBlock_selector_indices ] { -#endif - - for (uint32_t cluster_index = first_index; cluster_index < last_index; cluster_index++) - { - const basisu::vector& cluster_block_indices = new_endpoint_cluster_block_indices[cluster_index]; - - if (!cluster_block_indices.size()) - continue; - - const uint32_t total_pixels = (uint32_t)cluster_block_indices.size() * 16; - - basisu::vector cluster_pixels(total_pixels); - uint8_vec force_selectors(total_pixels); - - etc_block blk; - blk.set_block_color5_etc1s(get_endpoint_cluster_unscaled_color(cluster_index, false)); - blk.set_inten_tables_etc1s(get_endpoint_cluster_inten_table(cluster_index, false)); - blk.set_flip_bit(true); - - uint64_t cur_err = 0; - - for (uint32_t cluster_block_indices_iter = 0; cluster_block_indices_iter < cluster_block_indices.size(); cluster_block_indices_iter++) - { - const uint32_t block_index = cluster_block_indices[cluster_block_indices_iter]; - - const color_rgba *pBlock_pixels = get_source_pixel_block(block_index).get_ptr(); - - memcpy(&cluster_pixels[cluster_block_indices_iter * 16], pBlock_pixels, 16 * sizeof(color_rgba)); - - const uint32_t selector_cluster_index = pBlock_selector_indices ? (*pBlock_selector_indices)[block_index] : get_block_selector_cluster_index(block_index); - - const etc_block &blk_selectors = get_selector_cluster_selector_bits(selector_cluster_index); - - blk.set_raw_selector_bits(blk_selectors.get_raw_selector_bits()); - - cur_err += blk.evaluate_etc1_error(pBlock_pixels, m_params.m_perceptual); - - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - force_selectors[cluster_block_indices_iter * 16 + x + y * 4] = static_cast(blk_selectors.get_selector(x, y)); - } - - endpoint_cluster_etc_params new_endpoint_cluster_etc_params; - - { - etc1_optimizer optimizer; - etc1_solution_coordinates solutions[2]; - - etc1_optimizer::params cluster_optimizer_params; - cluster_optimizer_params.m_num_src_pixels = total_pixels; - cluster_optimizer_params.m_pSrc_pixels = &cluster_pixels[0]; - - cluster_optimizer_params.m_use_color4 = false; - cluster_optimizer_params.m_perceptual = m_params.m_perceptual; - cluster_optimizer_params.m_pForce_selectors = &force_selectors[0]; - - if (m_params.m_compression_level == BASISU_MAX_COMPRESSION_LEVEL) - cluster_optimizer_params.m_quality = cETCQualityUber; - else - cluster_optimizer_params.m_quality = cETCQualitySlow; - - etc1_optimizer::results cluster_optimizer_results; - - basisu::vector cluster_selectors(total_pixels); - cluster_optimizer_results.m_n = total_pixels; - cluster_optimizer_results.m_pSelectors = &cluster_selectors[0]; - - optimizer.init(cluster_optimizer_params, cluster_optimizer_results); - - if (!optimizer.compute()) - BASISU_FRONTEND_VERIFY(false); - - new_endpoint_cluster_etc_params.m_color_unscaled[0] = cluster_optimizer_results.m_block_color_unscaled; - new_endpoint_cluster_etc_params.m_inten_table[0] = cluster_optimizer_results.m_block_inten_table; - new_endpoint_cluster_etc_params.m_color_error[0] = cluster_optimizer_results.m_error; - new_endpoint_cluster_etc_params.m_color_used[0] = true; - new_endpoint_cluster_etc_params.m_valid = true; - } - - if (new_endpoint_cluster_etc_params.m_color_error[0] < cur_err) - { - m_endpoint_cluster_etc_params[cluster_index] = new_endpoint_cluster_etc_params; - - cluster_improved[cluster_index] = true; - } - - cluster_valid[cluster_index] = true; - - } // cluster_index - -#ifndef __EMSCRIPTEN__ - } ); -#endif - - } // cluster_index_iter - -#ifndef __EMSCRIPTEN__ - m_params.m_pJob_pool->wait_for_all(); -#endif - - uint32_t total_unused_clusters = 0; - uint32_t total_improved_clusters = 0; - - old_to_new_endpoint_cluster_indices.resize(m_endpoint_clusters.size()); - vector_set_all(old_to_new_endpoint_cluster_indices, -1); - - int total_new_endpoint_clusters = 0; - - for (uint32_t old_cluster_index = 0; old_cluster_index < m_endpoint_clusters.size(); old_cluster_index++) - { - if (!cluster_valid[old_cluster_index]) - total_unused_clusters++; - else - old_to_new_endpoint_cluster_indices[old_cluster_index] = total_new_endpoint_clusters++; - - if (cluster_improved[old_cluster_index]) - total_improved_clusters++; - } - - debug_printf("Total unused clusters: %u\n", total_unused_clusters); - debug_printf("Total improved_clusters: %u\n", total_improved_clusters); - debug_printf("Total endpoint clusters: %u\n", total_new_endpoint_clusters); - - if (optimize_final_codebook) - { - cluster_subblock_etc_params_vec new_endpoint_cluster_etc_params(total_new_endpoint_clusters); - - for (uint32_t old_cluster_index = 0; old_cluster_index < m_endpoint_clusters.size(); old_cluster_index++) - { - if (old_to_new_endpoint_cluster_indices[old_cluster_index] >= 0) - new_endpoint_cluster_etc_params[old_to_new_endpoint_cluster_indices[old_cluster_index]] = m_endpoint_cluster_etc_params[old_cluster_index]; - } - - debug_printf("basisu_frontend::reoptimize_remapped_endpoints: stage 1\n"); - - basisu::vector new_endpoint_clusters(total_new_endpoint_clusters); - - for (uint32_t block_index = 0; block_index < new_block_endpoints.size(); block_index++) - { - const uint32_t old_endpoint_cluster_index = new_block_endpoints[block_index]; - - const int new_endpoint_cluster_index = old_to_new_endpoint_cluster_indices[old_endpoint_cluster_index]; - BASISU_FRONTEND_VERIFY(new_endpoint_cluster_index >= 0); - - BASISU_FRONTEND_VERIFY(new_endpoint_cluster_index < (int)new_endpoint_clusters.size()); - - new_endpoint_clusters[new_endpoint_cluster_index].push_back(block_index * 2 + 0); - new_endpoint_clusters[new_endpoint_cluster_index].push_back(block_index * 2 + 1); - - BASISU_FRONTEND_VERIFY(new_endpoint_cluster_index < (int)new_endpoint_cluster_etc_params.size()); - - new_endpoint_cluster_etc_params[new_endpoint_cluster_index].m_subblocks.push_back(block_index * 2 + 0); - new_endpoint_cluster_etc_params[new_endpoint_cluster_index].m_subblocks.push_back(block_index * 2 + 1); - - m_block_endpoint_clusters_indices[block_index][0] = new_endpoint_cluster_index; - m_block_endpoint_clusters_indices[block_index][1] = new_endpoint_cluster_index; - } - - debug_printf("basisu_frontend::reoptimize_remapped_endpoints: stage 2\n"); - - m_endpoint_clusters = new_endpoint_clusters; - m_endpoint_cluster_etc_params = new_endpoint_cluster_etc_params; - - eliminate_redundant_or_empty_endpoint_clusters(); - - debug_printf("basisu_frontend::reoptimize_remapped_endpoints: stage 3\n"); - - for (uint32_t new_cluster_index = 0; new_cluster_index < m_endpoint_clusters.size(); new_cluster_index++) - { - for (uint32_t cluster_block_iter = 0; cluster_block_iter < m_endpoint_clusters[new_cluster_index].size(); cluster_block_iter++) - { - const uint32_t subblock_index = m_endpoint_clusters[new_cluster_index][cluster_block_iter]; - const uint32_t block_index = subblock_index >> 1; - - m_block_endpoint_clusters_indices[block_index][0] = new_cluster_index; - m_block_endpoint_clusters_indices[block_index][1] = new_cluster_index; - - const uint32_t old_cluster_index = new_block_endpoints[block_index]; - - old_to_new_endpoint_cluster_indices[old_cluster_index] = new_cluster_index; - } - } - - debug_printf("basisu_frontend::reoptimize_remapped_endpoints: stage 4\n"); - - for (uint32_t block_index = 0; block_index < m_encoded_blocks.size(); block_index++) - { - const uint32_t endpoint_cluster_index = get_subblock_endpoint_cluster_index(block_index, 0); - - m_encoded_blocks[block_index].set_block_color5_etc1s(get_endpoint_cluster_unscaled_color(endpoint_cluster_index, false)); - m_encoded_blocks[block_index].set_inten_tables_etc1s(get_endpoint_cluster_inten_table(endpoint_cluster_index, false)); - } - - debug_printf("Final (post-RDO) endpoint clusters: %u\n", m_endpoint_clusters.size()); - } - - //debug_printf("validate_output: %u\n", validate_output()); - } - - // Endpoint clusterization hierarchy integrity checker. - // Note this doesn't check for empty clusters. - bool basisu_frontend::validate_endpoint_cluster_hierarchy(bool ensure_clusters_have_same_parents) const - { - if (!m_endpoint_parent_clusters.size()) - return true; - - int_vec subblock_parent_indices(m_total_blocks * 2); - subblock_parent_indices.set_all(-1); - - int_vec subblock_cluster_indices(m_total_blocks * 2); - subblock_cluster_indices.set_all(-1); - - for (uint32_t parent_index = 0; parent_index < m_endpoint_parent_clusters.size(); parent_index++) - { - for (uint32_t i = 0; i < m_endpoint_parent_clusters[parent_index].size(); i++) - { - uint32_t subblock_index = m_endpoint_parent_clusters[parent_index][i]; - if (subblock_index >= m_total_blocks * 2) - return false; - - // If the endpoint cluster lives in more than one parent node, that's wrong. - if (subblock_parent_indices[subblock_index] != -1) - return false; - - subblock_parent_indices[subblock_index] = parent_index; - } - } - - // Make sure all endpoint clusters are present in the parent cluster. - for (uint32_t i = 0; i < subblock_parent_indices.size(); i++) - { - if (subblock_parent_indices[i] == -1) - return false; - } - - for (uint32_t cluster_index = 0; cluster_index < m_endpoint_clusters.size(); cluster_index++) - { - int parent_index = 0; - - for (uint32_t i = 0; i < m_endpoint_clusters[cluster_index].size(); i++) - { - uint32_t subblock_index = m_endpoint_clusters[cluster_index][i]; - if (subblock_index >= m_total_blocks * 2) - return false; - - if (subblock_cluster_indices[subblock_index] != -1) - return false; - - subblock_cluster_indices[subblock_index] = cluster_index; - - // There are transformations on the endpoint clusters that can break the strict tree requirement - if (ensure_clusters_have_same_parents) - { - // Make sure all the subblocks are in the same parent cluster - if (!i) - parent_index = subblock_parent_indices[subblock_index]; - else if (subblock_parent_indices[subblock_index] != parent_index) - return false; - } - } - } - - // Make sure all endpoint clusters are present in the parent cluster. - for (uint32_t i = 0; i < subblock_cluster_indices.size(); i++) - { - if (subblock_cluster_indices[i] == -1) - return false; - } - - return true; - } - - // This is very slow and only intended for debugging/development. It's enabled using the "-validate_etc1s" command line option. - bool basisu_frontend::validate_output() const - { - debug_printf("validate_output\n"); - - if (!check_etc1s_constraints()) - return false; - - for (uint32_t block_index = 0; block_index < m_total_blocks; block_index++) - { -//#define CHECK(x) do { if (!(x)) { DebugBreak(); return false; } } while(0) -#define CHECK(x) BASISU_FRONTEND_VERIFY(x); - - CHECK(get_output_block(block_index).get_flip_bit() == true); - - const bool diff_flag = get_diff_flag(block_index); - CHECK(diff_flag == true); - - etc_block blk; - memset(&blk, 0, sizeof(blk)); - blk.set_flip_bit(true); - blk.set_diff_bit(true); - - const uint32_t endpoint_cluster0_index = get_subblock_endpoint_cluster_index(block_index, 0); - const uint32_t endpoint_cluster1_index = get_subblock_endpoint_cluster_index(block_index, 1); - - // basisu only supports ETC1S, so these must be equal. - CHECK(endpoint_cluster0_index == endpoint_cluster1_index); - - CHECK(blk.set_block_color5_check(get_endpoint_cluster_unscaled_color(endpoint_cluster0_index, false), get_endpoint_cluster_unscaled_color(endpoint_cluster1_index, false))); - - CHECK(get_endpoint_cluster_color_is_used(endpoint_cluster0_index, false)); - - blk.set_inten_table(0, get_endpoint_cluster_inten_table(endpoint_cluster0_index, false)); - blk.set_inten_table(1, get_endpoint_cluster_inten_table(endpoint_cluster1_index, false)); - - const uint32_t selector_cluster_index = get_block_selector_cluster_index(block_index); - CHECK(selector_cluster_index < get_total_selector_clusters()); - - CHECK(vector_find(get_selector_cluster_block_indices(selector_cluster_index), block_index) != -1); - - blk.set_raw_selector_bits(get_selector_cluster_selector_bits(selector_cluster_index).get_raw_selector_bits()); - - const etc_block &rdo_output_block = get_output_block(block_index); - - CHECK(rdo_output_block.get_flip_bit() == blk.get_flip_bit()); - CHECK(rdo_output_block.get_diff_bit() == blk.get_diff_bit()); - CHECK(rdo_output_block.get_inten_table(0) == blk.get_inten_table(0)); - CHECK(rdo_output_block.get_inten_table(1) == blk.get_inten_table(1)); - CHECK(rdo_output_block.get_base5_color() == blk.get_base5_color()); - CHECK(rdo_output_block.get_delta3_color() == blk.get_delta3_color()); - CHECK(rdo_output_block.get_raw_selector_bits() == blk.get_raw_selector_bits()); - -#undef CHECK - } - - return true; - } - - void basisu_frontend::dump_debug_image(const char *pFilename, uint32_t first_block, uint32_t num_blocks_x, uint32_t num_blocks_y, bool output_blocks) - { - gpu_image g; - g.init(texture_format::cETC1, num_blocks_x * 4, num_blocks_y * 4); - - for (uint32_t y = 0; y < num_blocks_y; y++) - { - for (uint32_t x = 0; x < num_blocks_x; x++) - { - const uint32_t block_index = first_block + x + y * num_blocks_x; - - etc_block &blk = *(etc_block *)g.get_block_ptr(x, y); - - if (output_blocks) - blk = get_output_block(block_index); - else - { - const bool diff_flag = get_diff_flag(block_index); - - blk.set_diff_bit(diff_flag); - blk.set_flip_bit(true); - - const uint32_t endpoint_cluster0_index = get_subblock_endpoint_cluster_index(block_index, 0); - const uint32_t endpoint_cluster1_index = get_subblock_endpoint_cluster_index(block_index, 1); - - if (diff_flag) - blk.set_block_color5(get_endpoint_cluster_unscaled_color(endpoint_cluster0_index, false), get_endpoint_cluster_unscaled_color(endpoint_cluster1_index, false)); - else - blk.set_block_color4(get_endpoint_cluster_unscaled_color(endpoint_cluster0_index, true), get_endpoint_cluster_unscaled_color(endpoint_cluster1_index, true)); - - blk.set_inten_table(0, get_endpoint_cluster_inten_table(endpoint_cluster0_index, !diff_flag)); - blk.set_inten_table(1, get_endpoint_cluster_inten_table(endpoint_cluster1_index, !diff_flag)); - - const uint32_t selector_cluster_index = get_block_selector_cluster_index(block_index); - blk.set_raw_selector_bits(get_selector_cluster_selector_bits(selector_cluster_index).get_raw_selector_bits()); - } - } - } - - image img; - g.unpack(img); - - save_png(pFilename, img); - } - -} // namespace basisu - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_frontend.h b/WickedEngine/Utility/basis_universal/encoder/basisu_frontend.h deleted file mode 100644 index cda73f398..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_frontend.h +++ /dev/null @@ -1,353 +0,0 @@ -// basisu_frontend.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_enc.h" -#include "basisu_etc.h" -#include "basisu_gpu_texture.h" -#include "../transcoder/basisu_file_headers.h" -#include "../transcoder/basisu_transcoder.h" - -namespace basisu -{ - struct opencl_context; - typedef opencl_context* opencl_context_ptr; - - struct vec2U - { - uint32_t m_comps[2]; - - vec2U() { } - vec2U(uint32_t a, uint32_t b) { set(a, b); } - - void set(uint32_t a, uint32_t b) { m_comps[0] = a; m_comps[1] = b; } - - uint32_t operator[] (uint32_t i) const { assert(i < 2); return m_comps[i]; } - uint32_t &operator[] (uint32_t i) { assert(i < 2); return m_comps[i]; } - }; - - const uint32_t BASISU_DEFAULT_COMPRESSION_LEVEL = 2; - const uint32_t BASISU_MAX_COMPRESSION_LEVEL = 6; - - class basisu_frontend - { - BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(basisu_frontend); - - public: - - basisu_frontend() : - m_total_blocks(0), - m_total_pixels(0), - m_endpoint_refinement(false), - m_use_hierarchical_endpoint_codebooks(false), - m_use_hierarchical_selector_codebooks(false), - m_num_endpoint_codebook_iterations(0), - m_num_selector_codebook_iterations(0), - m_opencl_failed(false) - { - } - - enum - { - cMaxEndpointClusters = 16128, - - cMaxSelectorClusters = 16128, - }; - - struct params - { - params() : - m_num_source_blocks(0), - m_pSource_blocks(NULL), - m_max_endpoint_clusters(256), - m_max_selector_clusters(256), - m_compression_level(BASISU_DEFAULT_COMPRESSION_LEVEL), - m_perceptual(true), - m_debug_stats(false), - m_debug_images(false), - m_dump_endpoint_clusterization(true), - m_validate(false), - m_multithreaded(false), - m_disable_hierarchical_endpoint_codebooks(false), - m_tex_type(basist::cBASISTexType2D), - m_pOpenCL_context(nullptr), - m_pJob_pool(nullptr) - { - } - - uint32_t m_num_source_blocks; - pixel_block *m_pSource_blocks; - - uint32_t m_max_endpoint_clusters; - uint32_t m_max_selector_clusters; - - uint32_t m_compression_level; - - bool m_perceptual; - bool m_debug_stats; - bool m_debug_images; - bool m_dump_endpoint_clusterization; - bool m_validate; - bool m_multithreaded; - bool m_disable_hierarchical_endpoint_codebooks; - - basist::basis_texture_type m_tex_type; - const basist::basisu_lowlevel_etc1s_transcoder *m_pGlobal_codebooks; - - opencl_context_ptr m_pOpenCL_context; - - job_pool *m_pJob_pool; - }; - - bool init(const params &p); - - bool compress(); - - const params &get_params() const { return m_params; } - - const pixel_block &get_source_pixel_block(uint32_t i) const { return m_source_blocks[i]; } - - // RDO output blocks - uint32_t get_total_output_blocks() const { return static_cast(m_encoded_blocks.size()); } - - const etc_block &get_output_block(uint32_t block_index) const { return m_encoded_blocks[block_index]; } - const etc_block_vec &get_output_blocks() const { return m_encoded_blocks; } - - // "Best" ETC1S blocks - const etc_block &get_etc1s_block(uint32_t block_index) const { return m_etc1_blocks_etc1s[block_index]; } - - // Per-block flags - bool get_diff_flag(uint32_t block_index) const { return m_encoded_blocks[block_index].get_diff_bit(); } - - // Endpoint clusters - uint32_t get_total_endpoint_clusters() const { return static_cast(m_endpoint_clusters.size()); } - uint32_t get_subblock_endpoint_cluster_index(uint32_t block_index, uint32_t subblock_index) const { return m_block_endpoint_clusters_indices[block_index][subblock_index]; } - - const color_rgba &get_endpoint_cluster_unscaled_color(uint32_t cluster_index, bool individual_mode) const { return m_endpoint_cluster_etc_params[cluster_index].m_color_unscaled[individual_mode]; } - uint32_t get_endpoint_cluster_inten_table(uint32_t cluster_index, bool individual_mode) const { return m_endpoint_cluster_etc_params[cluster_index].m_inten_table[individual_mode]; } - - bool get_endpoint_cluster_color_is_used(uint32_t cluster_index, bool individual_mode) const { return m_endpoint_cluster_etc_params[cluster_index].m_color_used[individual_mode]; } - - // Selector clusters - uint32_t get_total_selector_clusters() const { return static_cast(m_selector_cluster_block_indices.size()); } - uint32_t get_block_selector_cluster_index(uint32_t block_index) const { return m_block_selector_cluster_index[block_index]; } - const etc_block &get_selector_cluster_selector_bits(uint32_t cluster_index) const { return m_optimized_cluster_selectors[cluster_index]; } - - // Returns block indices using each selector cluster - const uint_vec &get_selector_cluster_block_indices(uint32_t selector_cluster_index) const { return m_selector_cluster_block_indices[selector_cluster_index]; } - - void dump_debug_image(const char *pFilename, uint32_t first_block, uint32_t num_blocks_x, uint32_t num_blocks_y, bool output_blocks); - - void reoptimize_remapped_endpoints(const uint_vec &new_block_endpoints, int_vec &old_to_new_endpoint_cluster_indices, bool optimize_final_codebook, uint_vec *pBlock_selector_indices = nullptr); - - bool get_opencl_failed() const { return m_opencl_failed; } - - private: - params m_params; - uint32_t m_total_blocks; - uint32_t m_total_pixels; - - bool m_endpoint_refinement; - bool m_use_hierarchical_endpoint_codebooks; - bool m_use_hierarchical_selector_codebooks; - - uint32_t m_num_endpoint_codebook_iterations; - uint32_t m_num_selector_codebook_iterations; - - // Source pixels for each blocks - pixel_block_vec m_source_blocks; - - // The quantized ETC1S texture. - etc_block_vec m_encoded_blocks; - - // Quantized blocks after endpoint quant, but before selector quant - etc_block_vec m_orig_encoded_blocks; - - // Full quality ETC1S texture - etc_block_vec m_etc1_blocks_etc1s; - - typedef vec<6, float> vec6F; - - // Endpoint clusterizer - typedef tree_vector_quant vec6F_quantizer; - vec6F_quantizer m_endpoint_clusterizer; - - // For each endpoint cluster: An array of which subblock indices (block_index*2+subblock) are located in that cluster. - basisu::vector m_endpoint_clusters; - - // Array of subblock indices for each parent endpoint cluster - // Note: Initially, each endpoint cluster will only live in a single parent cluster, in a shallow tree. - // As the endpoint clusters are manipulated this constraint gets broken. - basisu::vector m_endpoint_parent_clusters; - - // Each block's parent endpoint cluster index - uint8_vec m_block_parent_endpoint_cluster; - - // Array of endpoint cluster indices for each parent endpoint cluster - basisu::vector m_endpoint_clusters_within_each_parent_cluster; - - struct endpoint_cluster_etc_params - { - endpoint_cluster_etc_params() - { - clear(); - } - - void clear() - { - clear_obj(m_color_unscaled); - clear_obj(m_inten_table); - clear_obj(m_color_error); - m_subblocks.clear(); - - clear_obj(m_color_used); - m_valid = false; - } - - // TODO: basisu doesn't use individual mode. - color_rgba m_color_unscaled[2]; // [use_individual_mode] - uint32_t m_inten_table[2]; - - uint64_t m_color_error[2]; - - uint_vec m_subblocks; - - bool m_color_used[2]; - - bool m_valid; - - bool operator== (const endpoint_cluster_etc_params &other) const - { - for (uint32_t i = 0; i < 2; i++) - { - if (m_color_unscaled[i] != other.m_color_unscaled[i]) - return false; - } - - if (m_inten_table[0] != other.m_inten_table[0]) - return false; - if (m_inten_table[1] != other.m_inten_table[1]) - return false; - - return true; - } - - bool operator< (const endpoint_cluster_etc_params &other) const - { - for (uint32_t i = 0; i < 2; i++) - { - if (m_color_unscaled[i] < other.m_color_unscaled[i]) - return true; - else if (m_color_unscaled[i] != other.m_color_unscaled[i]) - return false; - } - - if (m_inten_table[0] < other.m_inten_table[0]) - return true; - else if (m_inten_table[0] == other.m_inten_table[0]) - { - if (m_inten_table[1] < other.m_inten_table[1]) - return true; - } - - return false; - } - }; - - typedef basisu::vector cluster_subblock_etc_params_vec; - - // Each endpoint cluster's ETC1S parameters - cluster_subblock_etc_params_vec m_endpoint_cluster_etc_params; - - // The endpoint cluster index used by each ETC1 subblock. - basisu::vector m_block_endpoint_clusters_indices; - - // The block(s) within each selector cluster - // Note: If you add anything here that uses selector cluster indicies, be sure to update optimize_selector_codebook()! - basisu::vector m_selector_cluster_block_indices; - - // The selector bits for each selector cluster. - basisu::vector m_optimized_cluster_selectors; - - // The block(s) within each parent selector cluster. - basisu::vector m_selector_parent_cluster_block_indices; - - // Each block's parent selector cluster - uint8_vec m_block_parent_selector_cluster; - - // Array of selector cluster indices for each parent selector cluster - basisu::vector m_selector_clusters_within_each_parent_cluster; - - // Each block's selector cluster index - basisu::vector m_block_selector_cluster_index; - - struct subblock_endpoint_quant_err - { - uint64_t m_total_err; - uint32_t m_cluster_index; - uint32_t m_cluster_subblock_index; - uint32_t m_block_index; - uint32_t m_subblock_index; - - bool operator< (const subblock_endpoint_quant_err &rhs) const - { - if (m_total_err < rhs.m_total_err) - return true; - else if (m_total_err == rhs.m_total_err) - { - if (m_block_index < rhs.m_block_index) - return true; - else if (m_block_index == rhs.m_block_index) - return m_subblock_index < rhs.m_subblock_index; - } - return false; - } - }; - - // The sorted subblock endpoint quant error for each endpoint cluster - basisu::vector m_subblock_endpoint_quant_err_vec; - - std::mutex m_lock; - - bool m_opencl_failed; - - //----------------------------------------------------------------------------- - - void init_etc1_images(); - bool init_global_codebooks(); - void init_endpoint_training_vectors(); - void dump_endpoint_clusterization_visualization(const char *pFilename, bool vis_endpoint_colors); - void generate_endpoint_clusters(); - void compute_endpoint_subblock_error_vec(); - void introduce_new_endpoint_clusters(); - void generate_endpoint_codebook(uint32_t step); - uint32_t refine_endpoint_clusterization(); - void eliminate_redundant_or_empty_endpoint_clusters(); - void generate_block_endpoint_clusters(); - void compute_endpoint_clusters_within_each_parent_cluster(); - void compute_selector_clusters_within_each_parent_cluster(); - void create_initial_packed_texture(); - void generate_selector_clusters(); - void create_optimized_selector_codebook(uint32_t iter); - void find_optimal_selector_clusters_for_each_block(); - uint32_t refine_block_endpoints_given_selectors(); - void finalize(); - bool validate_endpoint_cluster_hierarchy(bool ensure_clusters_have_same_parents) const; - bool validate_output() const; - void introduce_special_selector_clusters(); - void optimize_selector_codebook(); - bool check_etc1s_constraints() const; - }; - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_gpu_texture.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_gpu_texture.cpp deleted file mode 100644 index dec769d5a..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_gpu_texture.cpp +++ /dev/null @@ -1,1630 +0,0 @@ -// basisu_gpu_texture.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_gpu_texture.h" -#include "basisu_enc.h" -#include "basisu_pvrtc1_4.h" -#if BASISU_USE_ASTC_DECOMPRESS -#include "basisu_astc_decomp.h" -#endif -#include "basisu_bc7enc.h" - -namespace basisu -{ - void unpack_etc2_eac(const void *pBlock_bits, color_rgba *pPixels) - { - static_assert(sizeof(eac_a8_block) == 8, "sizeof(eac_a8_block) == 8"); - - const eac_a8_block *pBlock = static_cast(pBlock_bits); - - const int8_t *pTable = g_etc2_eac_tables[pBlock->m_table]; - - const uint64_t selector_bits = pBlock->get_selector_bits(); - - const int32_t base = pBlock->m_base; - const int32_t mul = pBlock->m_multiplier; - - pPixels[0].a = clamp255(base + pTable[pBlock->get_selector(0, 0, selector_bits)] * mul); - pPixels[1].a = clamp255(base + pTable[pBlock->get_selector(1, 0, selector_bits)] * mul); - pPixels[2].a = clamp255(base + pTable[pBlock->get_selector(2, 0, selector_bits)] * mul); - pPixels[3].a = clamp255(base + pTable[pBlock->get_selector(3, 0, selector_bits)] * mul); - - pPixels[4].a = clamp255(base + pTable[pBlock->get_selector(0, 1, selector_bits)] * mul); - pPixels[5].a = clamp255(base + pTable[pBlock->get_selector(1, 1, selector_bits)] * mul); - pPixels[6].a = clamp255(base + pTable[pBlock->get_selector(2, 1, selector_bits)] * mul); - pPixels[7].a = clamp255(base + pTable[pBlock->get_selector(3, 1, selector_bits)] * mul); - - pPixels[8].a = clamp255(base + pTable[pBlock->get_selector(0, 2, selector_bits)] * mul); - pPixels[9].a = clamp255(base + pTable[pBlock->get_selector(1, 2, selector_bits)] * mul); - pPixels[10].a = clamp255(base + pTable[pBlock->get_selector(2, 2, selector_bits)] * mul); - pPixels[11].a = clamp255(base + pTable[pBlock->get_selector(3, 2, selector_bits)] * mul); - - pPixels[12].a = clamp255(base + pTable[pBlock->get_selector(0, 3, selector_bits)] * mul); - pPixels[13].a = clamp255(base + pTable[pBlock->get_selector(1, 3, selector_bits)] * mul); - pPixels[14].a = clamp255(base + pTable[pBlock->get_selector(2, 3, selector_bits)] * mul); - pPixels[15].a = clamp255(base + pTable[pBlock->get_selector(3, 3, selector_bits)] * mul); - } - - struct bc1_block - { - enum { cTotalEndpointBytes = 2, cTotalSelectorBytes = 4 }; - - uint8_t m_low_color[cTotalEndpointBytes]; - uint8_t m_high_color[cTotalEndpointBytes]; - uint8_t m_selectors[cTotalSelectorBytes]; - - inline uint32_t get_high_color() const { return m_high_color[0] | (m_high_color[1] << 8U); } - inline uint32_t get_low_color() const { return m_low_color[0] | (m_low_color[1] << 8U); } - - static void unpack_color(uint32_t c, uint32_t &r, uint32_t &g, uint32_t &b) - { - r = (c >> 11) & 31; - g = (c >> 5) & 63; - b = c & 31; - - r = (r << 3) | (r >> 2); - g = (g << 2) | (g >> 4); - b = (b << 3) | (b >> 2); - } - - inline uint32_t get_selector(uint32_t x, uint32_t y) const { assert((x < 4U) && (y < 4U)); return (m_selectors[y] >> (x * 2)) & 3; } - }; - - // Returns true if the block uses 3 color punchthrough alpha mode. - bool unpack_bc1(const void *pBlock_bits, color_rgba *pPixels, bool set_alpha) - { - static_assert(sizeof(bc1_block) == 8, "sizeof(bc1_block) == 8"); - - const bc1_block *pBlock = static_cast(pBlock_bits); - - const uint32_t l = pBlock->get_low_color(); - const uint32_t h = pBlock->get_high_color(); - - color_rgba c[4]; - - uint32_t r0, g0, b0, r1, g1, b1; - bc1_block::unpack_color(l, r0, g0, b0); - bc1_block::unpack_color(h, r1, g1, b1); - - c[0].set_noclamp_rgba(r0, g0, b0, 255); - c[1].set_noclamp_rgba(r1, g1, b1, 255); - - bool used_punchthrough = false; - - if (l > h) - { - c[2].set_noclamp_rgba((r0 * 2 + r1) / 3, (g0 * 2 + g1) / 3, (b0 * 2 + b1) / 3, 255); - c[3].set_noclamp_rgba((r1 * 2 + r0) / 3, (g1 * 2 + g0) / 3, (b1 * 2 + b0) / 3, 255); - } - else - { - c[2].set_noclamp_rgba((r0 + r1) / 2, (g0 + g1) / 2, (b0 + b1) / 2, 255); - c[3].set_noclamp_rgba(0, 0, 0, 0); - used_punchthrough = true; - } - - if (set_alpha) - { - for (uint32_t y = 0; y < 4; y++, pPixels += 4) - { - pPixels[0] = c[pBlock->get_selector(0, y)]; - pPixels[1] = c[pBlock->get_selector(1, y)]; - pPixels[2] = c[pBlock->get_selector(2, y)]; - pPixels[3] = c[pBlock->get_selector(3, y)]; - } - } - else - { - for (uint32_t y = 0; y < 4; y++, pPixels += 4) - { - pPixels[0].set_rgb(c[pBlock->get_selector(0, y)]); - pPixels[1].set_rgb(c[pBlock->get_selector(1, y)]); - pPixels[2].set_rgb(c[pBlock->get_selector(2, y)]); - pPixels[3].set_rgb(c[pBlock->get_selector(3, y)]); - } - } - - return used_punchthrough; - } - - bool unpack_bc1_nv(const void *pBlock_bits, color_rgba *pPixels, bool set_alpha) - { - static_assert(sizeof(bc1_block) == 8, "sizeof(bc1_block) == 8"); - - const bc1_block *pBlock = static_cast(pBlock_bits); - - const uint32_t l = pBlock->get_low_color(); - const uint32_t h = pBlock->get_high_color(); - - color_rgba c[4]; - - int r0 = (l >> 11) & 31; - int g0 = (l >> 5) & 63; - int b0 = l & 31; - int r1 = (h >> 11) & 31; - int g1 = (h >> 5) & 63; - int b1 = h & 31; - - c[0].b = (uint8_t)((3 * b0 * 22) / 8); - c[0].g = (uint8_t)((g0 << 2) | (g0 >> 4)); - c[0].r = (uint8_t)((3 * r0 * 22) / 8); - c[0].a = 0xFF; - - c[1].r = (uint8_t)((3 * r1 * 22) / 8); - c[1].g = (uint8_t)((g1 << 2) | (g1 >> 4)); - c[1].b = (uint8_t)((3 * b1 * 22) / 8); - c[1].a = 0xFF; - - int gdiff = c[1].g - c[0].g; - - bool used_punchthrough = false; - - if (l > h) - { - c[2].r = (uint8_t)(((2 * r0 + r1) * 22) / 8); - c[2].g = (uint8_t)(((256 * c[0].g + gdiff/4 + 128 + gdiff * 80) / 256)); - c[2].b = (uint8_t)(((2 * b0 + b1) * 22) / 8); - c[2].a = 0xFF; - - c[3].r = (uint8_t)(((2 * r1 + r0) * 22) / 8); - c[3].g = (uint8_t)((256 * c[1].g - gdiff/4 + 128 - gdiff * 80) / 256); - c[3].b = (uint8_t)(((2 * b1 + b0) * 22) / 8); - c[3].a = 0xFF; - } - else - { - c[2].r = (uint8_t)(((r0 + r1) * 33) / 8); - c[2].g = (uint8_t)((256 * c[0].g + gdiff/4 + 128 + gdiff * 128) / 256); - c[2].b = (uint8_t)(((b0 + b1) * 33) / 8); - c[2].a = 0xFF; - - c[3].set_noclamp_rgba(0, 0, 0, 0); - used_punchthrough = true; - } - - if (set_alpha) - { - for (uint32_t y = 0; y < 4; y++, pPixels += 4) - { - pPixels[0] = c[pBlock->get_selector(0, y)]; - pPixels[1] = c[pBlock->get_selector(1, y)]; - pPixels[2] = c[pBlock->get_selector(2, y)]; - pPixels[3] = c[pBlock->get_selector(3, y)]; - } - } - else - { - for (uint32_t y = 0; y < 4; y++, pPixels += 4) - { - pPixels[0].set_rgb(c[pBlock->get_selector(0, y)]); - pPixels[1].set_rgb(c[pBlock->get_selector(1, y)]); - pPixels[2].set_rgb(c[pBlock->get_selector(2, y)]); - pPixels[3].set_rgb(c[pBlock->get_selector(3, y)]); - } - } - - return used_punchthrough; - } - - static inline int interp_5_6_amd(int c0, int c1) { assert(c0 < 256 && c1 < 256); return (c0 * 43 + c1 * 21 + 32) >> 6; } - static inline int interp_half_5_6_amd(int c0, int c1) { assert(c0 < 256 && c1 < 256); return (c0 + c1 + 1) >> 1; } - - bool unpack_bc1_amd(const void *pBlock_bits, color_rgba *pPixels, bool set_alpha) - { - const bc1_block *pBlock = static_cast(pBlock_bits); - - const uint32_t l = pBlock->get_low_color(); - const uint32_t h = pBlock->get_high_color(); - - color_rgba c[4]; - - uint32_t r0, g0, b0, r1, g1, b1; - bc1_block::unpack_color(l, r0, g0, b0); - bc1_block::unpack_color(h, r1, g1, b1); - - c[0].set_noclamp_rgba(r0, g0, b0, 255); - c[1].set_noclamp_rgba(r1, g1, b1, 255); - - bool used_punchthrough = false; - - if (l > h) - { - c[2].set_noclamp_rgba(interp_5_6_amd(r0, r1), interp_5_6_amd(g0, g1), interp_5_6_amd(b0, b1), 255); - c[3].set_noclamp_rgba(interp_5_6_amd(r1, r0), interp_5_6_amd(g1, g0), interp_5_6_amd(b1, b0), 255); - } - else - { - c[2].set_noclamp_rgba(interp_half_5_6_amd(r0, r1), interp_half_5_6_amd(g0, g1), interp_half_5_6_amd(b0, b1), 255); - c[3].set_noclamp_rgba(0, 0, 0, 0); - used_punchthrough = true; - } - - if (set_alpha) - { - for (uint32_t y = 0; y < 4; y++, pPixels += 4) - { - pPixels[0] = c[pBlock->get_selector(0, y)]; - pPixels[1] = c[pBlock->get_selector(1, y)]; - pPixels[2] = c[pBlock->get_selector(2, y)]; - pPixels[3] = c[pBlock->get_selector(3, y)]; - } - } - else - { - for (uint32_t y = 0; y < 4; y++, pPixels += 4) - { - pPixels[0].set_rgb(c[pBlock->get_selector(0, y)]); - pPixels[1].set_rgb(c[pBlock->get_selector(1, y)]); - pPixels[2].set_rgb(c[pBlock->get_selector(2, y)]); - pPixels[3].set_rgb(c[pBlock->get_selector(3, y)]); - } - } - - return used_punchthrough; - } - - struct bc4_block - { - enum { cBC4SelectorBits = 3, cTotalSelectorBytes = 6, cMaxSelectorValues = 8 }; - uint8_t m_endpoints[2]; - - uint8_t m_selectors[cTotalSelectorBytes]; - - inline uint32_t get_low_alpha() const { return m_endpoints[0]; } - inline uint32_t get_high_alpha() const { return m_endpoints[1]; } - inline bool is_alpha6_block() const { return get_low_alpha() <= get_high_alpha(); } - - inline uint64_t get_selector_bits() const - { - return ((uint64_t)((uint32_t)m_selectors[0] | ((uint32_t)m_selectors[1] << 8U) | ((uint32_t)m_selectors[2] << 16U) | ((uint32_t)m_selectors[3] << 24U))) | - (((uint64_t)m_selectors[4]) << 32U) | - (((uint64_t)m_selectors[5]) << 40U); - } - - inline uint32_t get_selector(uint32_t x, uint32_t y, uint64_t selector_bits) const - { - assert((x < 4U) && (y < 4U)); - return (selector_bits >> (((y * 4) + x) * cBC4SelectorBits)) & (cMaxSelectorValues - 1); - } - - static inline uint32_t get_block_values6(uint8_t *pDst, uint32_t l, uint32_t h) - { - pDst[0] = static_cast(l); - pDst[1] = static_cast(h); - pDst[2] = static_cast((l * 4 + h) / 5); - pDst[3] = static_cast((l * 3 + h * 2) / 5); - pDst[4] = static_cast((l * 2 + h * 3) / 5); - pDst[5] = static_cast((l + h * 4) / 5); - pDst[6] = 0; - pDst[7] = 255; - return 6; - } - - static inline uint32_t get_block_values8(uint8_t *pDst, uint32_t l, uint32_t h) - { - pDst[0] = static_cast(l); - pDst[1] = static_cast(h); - pDst[2] = static_cast((l * 6 + h) / 7); - pDst[3] = static_cast((l * 5 + h * 2) / 7); - pDst[4] = static_cast((l * 4 + h * 3) / 7); - pDst[5] = static_cast((l * 3 + h * 4) / 7); - pDst[6] = static_cast((l * 2 + h * 5) / 7); - pDst[7] = static_cast((l + h * 6) / 7); - return 8; - } - - static inline uint32_t get_block_values(uint8_t *pDst, uint32_t l, uint32_t h) - { - if (l > h) - return get_block_values8(pDst, l, h); - else - return get_block_values6(pDst, l, h); - } - }; - - void unpack_bc4(const void *pBlock_bits, uint8_t *pPixels, uint32_t stride) - { - static_assert(sizeof(bc4_block) == 8, "sizeof(bc4_block) == 8"); - - const bc4_block *pBlock = static_cast(pBlock_bits); - - uint8_t sel_values[8]; - bc4_block::get_block_values(sel_values, pBlock->get_low_alpha(), pBlock->get_high_alpha()); - - const uint64_t selector_bits = pBlock->get_selector_bits(); - - for (uint32_t y = 0; y < 4; y++, pPixels += (stride * 4U)) - { - pPixels[0] = sel_values[pBlock->get_selector(0, y, selector_bits)]; - pPixels[stride * 1] = sel_values[pBlock->get_selector(1, y, selector_bits)]; - pPixels[stride * 2] = sel_values[pBlock->get_selector(2, y, selector_bits)]; - pPixels[stride * 3] = sel_values[pBlock->get_selector(3, y, selector_bits)]; - } - } - - // Returns false if the block uses 3-color punchthrough alpha mode, which isn't supported on some GPU's for BC3. - bool unpack_bc3(const void *pBlock_bits, color_rgba *pPixels) - { - bool success = true; - - if (unpack_bc1((const uint8_t *)pBlock_bits + sizeof(bc4_block), pPixels, true)) - success = false; - - unpack_bc4(pBlock_bits, &pPixels[0].a, sizeof(color_rgba)); - - return success; - } - - // writes RG - void unpack_bc5(const void *pBlock_bits, color_rgba *pPixels) - { - unpack_bc4(pBlock_bits, &pPixels[0].r, sizeof(color_rgba)); - unpack_bc4((const uint8_t *)pBlock_bits + sizeof(bc4_block), &pPixels[0].g, sizeof(color_rgba)); - } - - // ATC isn't officially documented, so I'm assuming these references: - // http://www.guildsoftware.com/papers/2012.Converting.DXTC.to.ATC.pdf - // https://github.com/Triang3l/S3TConv/blob/master/s3tconv_atitc.c - // The paper incorrectly says the ATC lerp factors are 1/3 and 2/3, but they are actually 3/8 and 5/8. - void unpack_atc(const void* pBlock_bits, color_rgba* pPixels) - { - const uint8_t* pBytes = static_cast(pBlock_bits); - - const uint16_t color0 = pBytes[0] | (pBytes[1] << 8U); - const uint16_t color1 = pBytes[2] | (pBytes[3] << 8U); - uint32_t sels = pBytes[4] | (pBytes[5] << 8U) | (pBytes[6] << 16U) | (pBytes[7] << 24U); - - const bool mode = (color0 & 0x8000) != 0; - - color_rgba c[4]; - - c[0].set((color0 >> 10) & 31, (color0 >> 5) & 31, color0 & 31, 255); - c[0].r = (c[0].r << 3) | (c[0].r >> 2); - c[0].g = (c[0].g << 3) | (c[0].g >> 2); - c[0].b = (c[0].b << 3) | (c[0].b >> 2); - - c[3].set((color1 >> 11) & 31, (color1 >> 5) & 63, color1 & 31, 255); - c[3].r = (c[3].r << 3) | (c[3].r >> 2); - c[3].g = (c[3].g << 2) | (c[3].g >> 4); - c[3].b = (c[3].b << 3) | (c[3].b >> 2); - - if (mode) - { - c[1].set(basisu::maximum(0, c[0].r - (c[3].r >> 2)), basisu::maximum(0, c[0].g - (c[3].g >> 2)), basisu::maximum(0, c[0].b - (c[3].b >> 2)), 255); - c[2] = c[0]; - c[0].set(0, 0, 0, 255); - } - else - { - c[1].r = (c[0].r * 5 + c[3].r * 3) >> 3; - c[1].g = (c[0].g * 5 + c[3].g * 3) >> 3; - c[1].b = (c[0].b * 5 + c[3].b * 3) >> 3; - - c[2].r = (c[0].r * 3 + c[3].r * 5) >> 3; - c[2].g = (c[0].g * 3 + c[3].g * 5) >> 3; - c[2].b = (c[0].b * 3 + c[3].b * 5) >> 3; - } - - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t s = sels & 3; - - pPixels[i] = c[s]; - - sels >>= 2; - } - } - - // BC7 mode 0-7 decompression. - // Instead of one monster routine to unpack all the BC7 modes, we're lumping the 3 subset, 2 subset, 1 subset, and dual plane modes together into simple shared routines. - - static inline uint32_t bc7_dequant(uint32_t val, uint32_t pbit, uint32_t val_bits) { assert(val < (1U << val_bits)); assert(pbit < 2); assert(val_bits >= 4 && val_bits <= 8); const uint32_t total_bits = val_bits + 1; val = (val << 1) | pbit; val <<= (8 - total_bits); val |= (val >> total_bits); assert(val <= 255); return val; } - static inline uint32_t bc7_dequant(uint32_t val, uint32_t val_bits) { assert(val < (1U << val_bits)); assert(val_bits >= 4 && val_bits <= 8); val <<= (8 - val_bits); val |= (val >> val_bits); assert(val <= 255); return val; } - - static inline uint32_t bc7_interp2(uint32_t l, uint32_t h, uint32_t w) { assert(w < 4); return (l * (64 - basist::g_bc7_weights2[w]) + h * basist::g_bc7_weights2[w] + 32) >> 6; } - static inline uint32_t bc7_interp3(uint32_t l, uint32_t h, uint32_t w) { assert(w < 8); return (l * (64 - basist::g_bc7_weights3[w]) + h * basist::g_bc7_weights3[w] + 32) >> 6; } - static inline uint32_t bc7_interp4(uint32_t l, uint32_t h, uint32_t w) { assert(w < 16); return (l * (64 - basist::g_bc7_weights4[w]) + h * basist::g_bc7_weights4[w] + 32) >> 6; } - static inline uint32_t bc7_interp(uint32_t l, uint32_t h, uint32_t w, uint32_t bits) - { - assert(l <= 255 && h <= 255); - switch (bits) - { - case 2: return bc7_interp2(l, h, w); - case 3: return bc7_interp3(l, h, w); - case 4: return bc7_interp4(l, h, w); - default: - break; - } - return 0; - } - - bool unpack_bc7_mode0_2(uint32_t mode, const void* pBlock_bits, color_rgba* pPixels) - { - //const uint32_t SUBSETS = 3; - const uint32_t ENDPOINTS = 6; - const uint32_t COMPS = 3; - const uint32_t WEIGHT_BITS = (mode == 0) ? 3 : 2; - const uint32_t ENDPOINT_BITS = (mode == 0) ? 4 : 5; - const uint32_t PBITS = (mode == 0) ? 6 : 0; - const uint32_t WEIGHT_VALS = 1 << WEIGHT_BITS; - - uint32_t bit_offset = 0; - const uint8_t* pBuf = static_cast(pBlock_bits); - - if (read_bits32(pBuf, bit_offset, mode + 1) != (1U << mode)) return false; - - const uint32_t part = read_bits32(pBuf, bit_offset, (mode == 0) ? 4 : 6); - - color_rgba endpoints[ENDPOINTS]; - for (uint32_t c = 0; c < COMPS; c++) - for (uint32_t e = 0; e < ENDPOINTS; e++) - endpoints[e][c] = (uint8_t)read_bits32(pBuf, bit_offset, ENDPOINT_BITS); - - uint32_t pbits[6]; - for (uint32_t p = 0; p < PBITS; p++) - pbits[p] = read_bits32(pBuf, bit_offset, 1); - - uint32_t weights[16]; - for (uint32_t i = 0; i < 16; i++) - weights[i] = read_bits32(pBuf, bit_offset, ((!i) || (i == basist::g_bc7_table_anchor_index_third_subset_1[part]) || (i == basist::g_bc7_table_anchor_index_third_subset_2[part])) ? (WEIGHT_BITS - 1) : WEIGHT_BITS); - - assert(bit_offset == 128); - - for (uint32_t e = 0; e < ENDPOINTS; e++) - for (uint32_t c = 0; c < 4; c++) - endpoints[e][c] = (uint8_t)((c == 3) ? 255 : (PBITS ? bc7_dequant(endpoints[e][c], pbits[e], ENDPOINT_BITS) : bc7_dequant(endpoints[e][c], ENDPOINT_BITS))); - - color_rgba block_colors[3][8]; - for (uint32_t s = 0; s < 3; s++) - for (uint32_t i = 0; i < WEIGHT_VALS; i++) - { - for (uint32_t c = 0; c < 3; c++) - block_colors[s][i][c] = (uint8_t)bc7_interp(endpoints[s * 2 + 0][c], endpoints[s * 2 + 1][c], i, WEIGHT_BITS); - block_colors[s][i][3] = 255; - } - - for (uint32_t i = 0; i < 16; i++) - pPixels[i] = block_colors[basist::g_bc7_partition3[part * 16 + i]][weights[i]]; - - return true; - } - - bool unpack_bc7_mode1_3_7(uint32_t mode, const void* pBlock_bits, color_rgba* pPixels) - { - //const uint32_t SUBSETS = 2; - const uint32_t ENDPOINTS = 4; - const uint32_t COMPS = (mode == 7) ? 4 : 3; - const uint32_t WEIGHT_BITS = (mode == 1) ? 3 : 2; - const uint32_t ENDPOINT_BITS = (mode == 7) ? 5 : ((mode == 1) ? 6 : 7); - const uint32_t PBITS = (mode == 1) ? 2 : 4; - const uint32_t SHARED_PBITS = (mode == 1) ? true : false; - const uint32_t WEIGHT_VALS = 1 << WEIGHT_BITS; - - uint32_t bit_offset = 0; - const uint8_t* pBuf = static_cast(pBlock_bits); - - if (read_bits32(pBuf, bit_offset, mode + 1) != (1U << mode)) return false; - - const uint32_t part = read_bits32(pBuf, bit_offset, 6); - - color_rgba endpoints[ENDPOINTS]; - for (uint32_t c = 0; c < COMPS; c++) - for (uint32_t e = 0; e < ENDPOINTS; e++) - endpoints[e][c] = (uint8_t)read_bits32(pBuf, bit_offset, ENDPOINT_BITS); - - uint32_t pbits[4]; - for (uint32_t p = 0; p < PBITS; p++) - pbits[p] = read_bits32(pBuf, bit_offset, 1); - - uint32_t weights[16]; - for (uint32_t i = 0; i < 16; i++) - weights[i] = read_bits32(pBuf, bit_offset, ((!i) || (i == basist::g_bc7_table_anchor_index_second_subset[part])) ? (WEIGHT_BITS - 1) : WEIGHT_BITS); - - assert(bit_offset == 128); - - for (uint32_t e = 0; e < ENDPOINTS; e++) - for (uint32_t c = 0; c < 4; c++) - endpoints[e][c] = (uint8_t)((c == ((mode == 7U) ? 4U : 3U)) ? 255 : bc7_dequant(endpoints[e][c], pbits[SHARED_PBITS ? (e >> 1) : e], ENDPOINT_BITS)); - - color_rgba block_colors[2][8]; - for (uint32_t s = 0; s < 2; s++) - for (uint32_t i = 0; i < WEIGHT_VALS; i++) - { - for (uint32_t c = 0; c < COMPS; c++) - block_colors[s][i][c] = (uint8_t)bc7_interp(endpoints[s * 2 + 0][c], endpoints[s * 2 + 1][c], i, WEIGHT_BITS); - block_colors[s][i][3] = (COMPS == 3) ? 255 : block_colors[s][i][3]; - } - - for (uint32_t i = 0; i < 16; i++) - pPixels[i] = block_colors[basist::g_bc7_partition2[part * 16 + i]][weights[i]]; - - return true; - } - - bool unpack_bc7_mode4_5(uint32_t mode, const void* pBlock_bits, color_rgba* pPixels) - { - const uint32_t ENDPOINTS = 2; - const uint32_t COMPS = 4; - const uint32_t WEIGHT_BITS = 2; - const uint32_t A_WEIGHT_BITS = (mode == 4) ? 3 : 2; - const uint32_t ENDPOINT_BITS = (mode == 4) ? 5 : 7; - const uint32_t A_ENDPOINT_BITS = (mode == 4) ? 6 : 8; - //const uint32_t WEIGHT_VALS = 1 << WEIGHT_BITS; - //const uint32_t A_WEIGHT_VALS = 1 << A_WEIGHT_BITS; - - uint32_t bit_offset = 0; - const uint8_t* pBuf = static_cast(pBlock_bits); - - if (read_bits32(pBuf, bit_offset, mode + 1) != (1U << mode)) return false; - - const uint32_t comp_rot = read_bits32(pBuf, bit_offset, 2); - const uint32_t index_mode = (mode == 4) ? read_bits32(pBuf, bit_offset, 1) : 0; - - color_rgba endpoints[ENDPOINTS]; - for (uint32_t c = 0; c < COMPS; c++) - for (uint32_t e = 0; e < ENDPOINTS; e++) - endpoints[e][c] = (uint8_t)read_bits32(pBuf, bit_offset, (c == 3) ? A_ENDPOINT_BITS : ENDPOINT_BITS); - - const uint32_t weight_bits[2] = { index_mode ? A_WEIGHT_BITS : WEIGHT_BITS, index_mode ? WEIGHT_BITS : A_WEIGHT_BITS }; - - uint32_t weights[16], a_weights[16]; - - for (uint32_t i = 0; i < 16; i++) - (index_mode ? a_weights : weights)[i] = read_bits32(pBuf, bit_offset, weight_bits[index_mode] - ((!i) ? 1 : 0)); - - for (uint32_t i = 0; i < 16; i++) - (index_mode ? weights : a_weights)[i] = read_bits32(pBuf, bit_offset, weight_bits[1 - index_mode] - ((!i) ? 1 : 0)); - - assert(bit_offset == 128); - - for (uint32_t e = 0; e < ENDPOINTS; e++) - for (uint32_t c = 0; c < 4; c++) - endpoints[e][c] = (uint8_t)bc7_dequant(endpoints[e][c], (c == 3) ? A_ENDPOINT_BITS : ENDPOINT_BITS); - - color_rgba block_colors[8]; - for (uint32_t i = 0; i < (1U << weight_bits[0]); i++) - for (uint32_t c = 0; c < 3; c++) - block_colors[i][c] = (uint8_t)bc7_interp(endpoints[0][c], endpoints[1][c], i, weight_bits[0]); - - for (uint32_t i = 0; i < (1U << weight_bits[1]); i++) - block_colors[i][3] = (uint8_t)bc7_interp(endpoints[0][3], endpoints[1][3], i, weight_bits[1]); - - for (uint32_t i = 0; i < 16; i++) - { - pPixels[i] = block_colors[weights[i]]; - pPixels[i].a = block_colors[a_weights[i]].a; - if (comp_rot >= 1) - std::swap(pPixels[i].a, pPixels[i].m_comps[comp_rot - 1]); - } - - return true; - } - - struct bc7_mode_6 - { - struct - { - uint64_t m_mode : 7; - uint64_t m_r0 : 7; - uint64_t m_r1 : 7; - uint64_t m_g0 : 7; - uint64_t m_g1 : 7; - uint64_t m_b0 : 7; - uint64_t m_b1 : 7; - uint64_t m_a0 : 7; - uint64_t m_a1 : 7; - uint64_t m_p0 : 1; - } m_lo; - - union - { - struct - { - uint64_t m_p1 : 1; - uint64_t m_s00 : 3; - uint64_t m_s10 : 4; - uint64_t m_s20 : 4; - uint64_t m_s30 : 4; - - uint64_t m_s01 : 4; - uint64_t m_s11 : 4; - uint64_t m_s21 : 4; - uint64_t m_s31 : 4; - - uint64_t m_s02 : 4; - uint64_t m_s12 : 4; - uint64_t m_s22 : 4; - uint64_t m_s32 : 4; - - uint64_t m_s03 : 4; - uint64_t m_s13 : 4; - uint64_t m_s23 : 4; - uint64_t m_s33 : 4; - - } m_hi; - - uint64_t m_hi_bits; - }; - }; - - bool unpack_bc7_mode6(const void *pBlock_bits, color_rgba *pPixels) - { - static_assert(sizeof(bc7_mode_6) == 16, "sizeof(bc7_mode_6) == 16"); - - const bc7_mode_6 &block = *static_cast(pBlock_bits); - - if (block.m_lo.m_mode != (1 << 6)) - return false; - - const uint32_t r0 = (uint32_t)((block.m_lo.m_r0 << 1) | block.m_lo.m_p0); - const uint32_t g0 = (uint32_t)((block.m_lo.m_g0 << 1) | block.m_lo.m_p0); - const uint32_t b0 = (uint32_t)((block.m_lo.m_b0 << 1) | block.m_lo.m_p0); - const uint32_t a0 = (uint32_t)((block.m_lo.m_a0 << 1) | block.m_lo.m_p0); - const uint32_t r1 = (uint32_t)((block.m_lo.m_r1 << 1) | block.m_hi.m_p1); - const uint32_t g1 = (uint32_t)((block.m_lo.m_g1 << 1) | block.m_hi.m_p1); - const uint32_t b1 = (uint32_t)((block.m_lo.m_b1 << 1) | block.m_hi.m_p1); - const uint32_t a1 = (uint32_t)((block.m_lo.m_a1 << 1) | block.m_hi.m_p1); - - color_rgba vals[16]; - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t w = basist::g_bc7_weights4[i]; - const uint32_t iw = 64 - w; - vals[i].set_noclamp_rgba( - (r0 * iw + r1 * w + 32) >> 6, - (g0 * iw + g1 * w + 32) >> 6, - (b0 * iw + b1 * w + 32) >> 6, - (a0 * iw + a1 * w + 32) >> 6); - } - - pPixels[0] = vals[block.m_hi.m_s00]; - pPixels[1] = vals[block.m_hi.m_s10]; - pPixels[2] = vals[block.m_hi.m_s20]; - pPixels[3] = vals[block.m_hi.m_s30]; - - pPixels[4] = vals[block.m_hi.m_s01]; - pPixels[5] = vals[block.m_hi.m_s11]; - pPixels[6] = vals[block.m_hi.m_s21]; - pPixels[7] = vals[block.m_hi.m_s31]; - - pPixels[8] = vals[block.m_hi.m_s02]; - pPixels[9] = vals[block.m_hi.m_s12]; - pPixels[10] = vals[block.m_hi.m_s22]; - pPixels[11] = vals[block.m_hi.m_s32]; - - pPixels[12] = vals[block.m_hi.m_s03]; - pPixels[13] = vals[block.m_hi.m_s13]; - pPixels[14] = vals[block.m_hi.m_s23]; - pPixels[15] = vals[block.m_hi.m_s33]; - - return true; - } - - bool unpack_bc7(const void *pBlock, color_rgba *pPixels) - { - const uint32_t first_byte = static_cast(pBlock)[0]; - - for (uint32_t mode = 0; mode <= 7; mode++) - { - if (first_byte & (1U << mode)) - { - switch (mode) - { - case 0: - case 2: - return unpack_bc7_mode0_2(mode, pBlock, pPixels); - case 1: - case 3: - case 7: - return unpack_bc7_mode1_3_7(mode, pBlock, pPixels); - case 4: - case 5: - return unpack_bc7_mode4_5(mode, pBlock, pPixels); - case 6: - return unpack_bc7_mode6(pBlock, pPixels); - default: - break; - } - } - } - - return false; - } - - struct fxt1_block - { - union - { - struct - { - uint64_t m_t00 : 2; - uint64_t m_t01 : 2; - uint64_t m_t02 : 2; - uint64_t m_t03 : 2; - uint64_t m_t04 : 2; - uint64_t m_t05 : 2; - uint64_t m_t06 : 2; - uint64_t m_t07 : 2; - uint64_t m_t08 : 2; - uint64_t m_t09 : 2; - uint64_t m_t10 : 2; - uint64_t m_t11 : 2; - uint64_t m_t12 : 2; - uint64_t m_t13 : 2; - uint64_t m_t14 : 2; - uint64_t m_t15 : 2; - uint64_t m_t16 : 2; - uint64_t m_t17 : 2; - uint64_t m_t18 : 2; - uint64_t m_t19 : 2; - uint64_t m_t20 : 2; - uint64_t m_t21 : 2; - uint64_t m_t22 : 2; - uint64_t m_t23 : 2; - uint64_t m_t24 : 2; - uint64_t m_t25 : 2; - uint64_t m_t26 : 2; - uint64_t m_t27 : 2; - uint64_t m_t28 : 2; - uint64_t m_t29 : 2; - uint64_t m_t30 : 2; - uint64_t m_t31 : 2; - } m_lo; - uint64_t m_lo_bits; - uint8_t m_sels[8]; - }; - - union - { - struct - { -#ifdef BASISU_USE_ORIGINAL_3DFX_FXT1_ENCODING - // This is the format that 3DFX's DECOMP.EXE tool expects, which I'm assuming is what the actual 3DFX hardware wanted. - // Unfortunately, color0/color1 and color2/color3 are flipped relative to the official OpenGL extension and Intel's documentation! - uint64_t m_b1 : 5; - uint64_t m_g1 : 5; - uint64_t m_r1 : 5; - uint64_t m_b0 : 5; - uint64_t m_g0 : 5; - uint64_t m_r0 : 5; - uint64_t m_b3 : 5; - uint64_t m_g3 : 5; - uint64_t m_r3 : 5; - uint64_t m_b2 : 5; - uint64_t m_g2 : 5; - uint64_t m_r2 : 5; -#else - // Intel's encoding, and the encoding in the OpenGL FXT1 spec. - uint64_t m_b0 : 5; - uint64_t m_g0 : 5; - uint64_t m_r0 : 5; - uint64_t m_b1 : 5; - uint64_t m_g1 : 5; - uint64_t m_r1 : 5; - uint64_t m_b2 : 5; - uint64_t m_g2 : 5; - uint64_t m_r2 : 5; - uint64_t m_b3 : 5; - uint64_t m_g3 : 5; - uint64_t m_r3 : 5; -#endif - uint64_t m_alpha : 1; - uint64_t m_glsb : 2; - uint64_t m_mode : 1; - } m_hi; - - uint64_t m_hi_bits; - }; - }; - - static color_rgba expand_565(const color_rgba& c) - { - return color_rgba((c.r << 3) | (c.r >> 2), (c.g << 2) | (c.g >> 4), (c.b << 3) | (c.b >> 2), 255); - } - - // We only support CC_MIXED non-alpha blocks here because that's the only mode the transcoder uses at the moment. - bool unpack_fxt1(const void *p, color_rgba *pPixels) - { - const fxt1_block* pBlock = static_cast(p); - - if (pBlock->m_hi.m_mode == 0) - return false; - if (pBlock->m_hi.m_alpha == 1) - return false; - - color_rgba colors[4]; - - colors[0].r = pBlock->m_hi.m_r0; - colors[0].g = (uint8_t)((pBlock->m_hi.m_g0 << 1) | ((pBlock->m_lo.m_t00 >> 1) ^ (pBlock->m_hi.m_glsb & 1))); - colors[0].b = pBlock->m_hi.m_b0; - colors[0].a = 255; - - colors[1].r = pBlock->m_hi.m_r1; - colors[1].g = (uint8_t)((pBlock->m_hi.m_g1 << 1) | (pBlock->m_hi.m_glsb & 1)); - colors[1].b = pBlock->m_hi.m_b1; - colors[1].a = 255; - - colors[2].r = pBlock->m_hi.m_r2; - colors[2].g = (uint8_t)((pBlock->m_hi.m_g2 << 1) | ((pBlock->m_lo.m_t16 >> 1) ^ (pBlock->m_hi.m_glsb >> 1))); - colors[2].b = pBlock->m_hi.m_b2; - colors[2].a = 255; - - colors[3].r = pBlock->m_hi.m_r3; - colors[3].g = (uint8_t)((pBlock->m_hi.m_g3 << 1) | (pBlock->m_hi.m_glsb >> 1)); - colors[3].b = pBlock->m_hi.m_b3; - colors[3].a = 255; - - for (uint32_t i = 0; i < 4; i++) - colors[i] = expand_565(colors[i]); - - color_rgba block0_colors[4]; - block0_colors[0] = colors[0]; - block0_colors[1] = color_rgba((colors[0].r * 2 + colors[1].r + 1) / 3, (colors[0].g * 2 + colors[1].g + 1) / 3, (colors[0].b * 2 + colors[1].b + 1) / 3, 255); - block0_colors[2] = color_rgba((colors[1].r * 2 + colors[0].r + 1) / 3, (colors[1].g * 2 + colors[0].g + 1) / 3, (colors[1].b * 2 + colors[0].b + 1) / 3, 255); - block0_colors[3] = colors[1]; - - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t sel = (pBlock->m_sels[i >> 2] >> ((i & 3) * 2)) & 3; - - const uint32_t x = i & 3; - const uint32_t y = i >> 2; - pPixels[x + y * 8] = block0_colors[sel]; - } - - color_rgba block1_colors[4]; - block1_colors[0] = colors[2]; - block1_colors[1] = color_rgba((colors[2].r * 2 + colors[3].r + 1) / 3, (colors[2].g * 2 + colors[3].g + 1) / 3, (colors[2].b * 2 + colors[3].b + 1) / 3, 255); - block1_colors[2] = color_rgba((colors[3].r * 2 + colors[2].r + 1) / 3, (colors[3].g * 2 + colors[2].g + 1) / 3, (colors[3].b * 2 + colors[2].b + 1) / 3, 255); - block1_colors[3] = colors[3]; - - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t sel = (pBlock->m_sels[4 + (i >> 2)] >> ((i & 3) * 2)) & 3; - - const uint32_t x = i & 3; - const uint32_t y = i >> 2; - pPixels[4 + x + y * 8] = block1_colors[sel]; - } - - return true; - } - - struct pvrtc2_block - { - uint8_t m_modulation[4]; - - union - { - union - { - // Opaque mode: RGB colora=554 and colorb=555 - struct - { - uint32_t m_mod_flag : 1; - uint32_t m_blue_a : 4; - uint32_t m_green_a : 5; - uint32_t m_red_a : 5; - uint32_t m_hard_flag : 1; - uint32_t m_blue_b : 5; - uint32_t m_green_b : 5; - uint32_t m_red_b : 5; - uint32_t m_opaque_flag : 1; - - } m_opaque_color_data; - - // Transparent mode: RGBA colora=4433 and colorb=4443 - struct - { - uint32_t m_mod_flag : 1; - uint32_t m_blue_a : 3; - uint32_t m_green_a : 4; - uint32_t m_red_a : 4; - uint32_t m_alpha_a : 3; - uint32_t m_hard_flag : 1; - uint32_t m_blue_b : 4; - uint32_t m_green_b : 4; - uint32_t m_red_b : 4; - uint32_t m_alpha_b : 3; - uint32_t m_opaque_flag : 1; - - } m_trans_color_data; - }; - - uint32_t m_color_data_bits; - }; - }; - - static color_rgba convert_rgb_555_to_888(const color_rgba& col) - { - return color_rgba((col[0] << 3) | (col[0] >> 2), (col[1] << 3) | (col[1] >> 2), (col[2] << 3) | (col[2] >> 2), 255); - } - - static color_rgba convert_rgba_5554_to_8888(const color_rgba& col) - { - return color_rgba((col[0] << 3) | (col[0] >> 2), (col[1] << 3) | (col[1] >> 2), (col[2] << 3) | (col[2] >> 2), (col[3] << 4) | col[3]); - } - - // PVRTC2 is currently limited to only what our transcoder outputs (non-interpolated, hard_flag=1 modulation=0). In this mode, PVRTC2 looks much like BC1/ATC. - bool unpack_pvrtc2(const void *p, color_rgba *pPixels) - { - const pvrtc2_block* pBlock = static_cast(p); - - if ((!pBlock->m_opaque_color_data.m_hard_flag) || (pBlock->m_opaque_color_data.m_mod_flag)) - { - // This mode isn't supported by the transcoder, so we aren't bothering with it here. - return false; - } - - color_rgba colors[4]; - - if (pBlock->m_opaque_color_data.m_opaque_flag) - { - // colora=554 - color_rgba color_a(pBlock->m_opaque_color_data.m_red_a, pBlock->m_opaque_color_data.m_green_a, (pBlock->m_opaque_color_data.m_blue_a << 1) | (pBlock->m_opaque_color_data.m_blue_a >> 3), 255); - - // colora=555 - color_rgba color_b(pBlock->m_opaque_color_data.m_red_b, pBlock->m_opaque_color_data.m_green_b, pBlock->m_opaque_color_data.m_blue_b, 255); - - colors[0] = convert_rgb_555_to_888(color_a); - colors[3] = convert_rgb_555_to_888(color_b); - - colors[1].set((colors[0].r * 5 + colors[3].r * 3) / 8, (colors[0].g * 5 + colors[3].g * 3) / 8, (colors[0].b * 5 + colors[3].b * 3) / 8, 255); - colors[2].set((colors[0].r * 3 + colors[3].r * 5) / 8, (colors[0].g * 3 + colors[3].g * 5) / 8, (colors[0].b * 3 + colors[3].b * 5) / 8, 255); - } - else - { - // colora=4433 - color_rgba color_a( - (pBlock->m_trans_color_data.m_red_a << 1) | (pBlock->m_trans_color_data.m_red_a >> 3), - (pBlock->m_trans_color_data.m_green_a << 1) | (pBlock->m_trans_color_data.m_green_a >> 3), - (pBlock->m_trans_color_data.m_blue_a << 2) | (pBlock->m_trans_color_data.m_blue_a >> 1), - pBlock->m_trans_color_data.m_alpha_a << 1); - - //colorb=4443 - color_rgba color_b( - (pBlock->m_trans_color_data.m_red_b << 1) | (pBlock->m_trans_color_data.m_red_b >> 3), - (pBlock->m_trans_color_data.m_green_b << 1) | (pBlock->m_trans_color_data.m_green_b >> 3), - (pBlock->m_trans_color_data.m_blue_b << 1) | (pBlock->m_trans_color_data.m_blue_b >> 3), - (pBlock->m_trans_color_data.m_alpha_b << 1) | 1); - - colors[0] = convert_rgba_5554_to_8888(color_a); - colors[3] = convert_rgba_5554_to_8888(color_b); - } - - colors[1].set((colors[0].r * 5 + colors[3].r * 3) / 8, (colors[0].g * 5 + colors[3].g * 3) / 8, (colors[0].b * 5 + colors[3].b * 3) / 8, (colors[0].a * 5 + colors[3].a * 3) / 8); - colors[2].set((colors[0].r * 3 + colors[3].r * 5) / 8, (colors[0].g * 3 + colors[3].g * 5) / 8, (colors[0].b * 3 + colors[3].b * 5) / 8, (colors[0].a * 3 + colors[3].a * 5) / 8); - - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t sel = (pBlock->m_modulation[i >> 2] >> ((i & 3) * 2)) & 3; - pPixels[i] = colors[sel]; - } - - return true; - } - - struct etc2_eac_r11 - { - uint64_t m_base : 8; - uint64_t m_table : 4; - uint64_t m_mul : 4; - uint64_t m_sels_0 : 8; - uint64_t m_sels_1 : 8; - uint64_t m_sels_2 : 8; - uint64_t m_sels_3 : 8; - uint64_t m_sels_4 : 8; - uint64_t m_sels_5 : 8; - - uint64_t get_sels() const - { - return ((uint64_t)m_sels_0 << 40U) | ((uint64_t)m_sels_1 << 32U) | ((uint64_t)m_sels_2 << 24U) | ((uint64_t)m_sels_3 << 16U) | ((uint64_t)m_sels_4 << 8U) | m_sels_5; - } - - void set_sels(uint64_t v) - { - m_sels_0 = (v >> 40U) & 0xFF; - m_sels_1 = (v >> 32U) & 0xFF; - m_sels_2 = (v >> 24U) & 0xFF; - m_sels_3 = (v >> 16U) & 0xFF; - m_sels_4 = (v >> 8U) & 0xFF; - m_sels_5 = v & 0xFF; - } - }; - - struct etc2_eac_rg11 - { - etc2_eac_r11 m_c[2]; - }; - - void unpack_etc2_eac_r(const void *p, color_rgba* pPixels, uint32_t c) - { - const etc2_eac_r11* pBlock = static_cast(p); - const uint64_t sels = pBlock->get_sels(); - - const int base = (int)pBlock->m_base * 8 + 4; - const int mul = pBlock->m_mul ? ((int)pBlock->m_mul * 8) : 1; - const int table = (int)pBlock->m_table; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t shift = 45 - ((y + x * 4) * 3); - - const uint32_t sel = (uint32_t)((sels >> shift) & 7); - - int val = base + g_etc2_eac_tables[table][sel] * mul; - val = clamp(val, 0, 2047); - - // Convert to 8-bits with rounding - //pPixels[x + y * 4].m_comps[c] = static_cast((val * 255 + 1024) / 2047); - pPixels[x + y * 4].m_comps[c] = static_cast((val * 255 + 1023) / 2047); - - } // x - } // y - } - - void unpack_etc2_eac_rg(const void* p, color_rgba* pPixels) - { - for (uint32_t c = 0; c < 2; c++) - { - const etc2_eac_r11* pBlock = &static_cast(p)->m_c[c]; - - unpack_etc2_eac_r(pBlock, pPixels, c); - } - } - - void unpack_uastc(const void* p, color_rgba* pPixels) - { - basist::unpack_uastc(*static_cast(p), (basist::color32 *)pPixels, false); - } - - // Unpacks to RGBA, R, RG, or A - bool unpack_block(texture_format fmt, const void* pBlock, color_rgba* pPixels) - { - switch (fmt) - { - case texture_format::cBC1: - { - unpack_bc1(pBlock, pPixels, true); - break; - } - case texture_format::cBC1_NV: - { - unpack_bc1_nv(pBlock, pPixels, true); - break; - } - case texture_format::cBC1_AMD: - { - unpack_bc1_amd(pBlock, pPixels, true); - break; - } - case texture_format::cBC3: - { - return unpack_bc3(pBlock, pPixels); - } - case texture_format::cBC4: - { - // Unpack to R - unpack_bc4(pBlock, &pPixels[0].r, sizeof(color_rgba)); - break; - } - case texture_format::cBC5: - { - unpack_bc5(pBlock, pPixels); - break; - } - case texture_format::cBC7: - { - return unpack_bc7(pBlock, pPixels); - } - // Full ETC2 color blocks (planar/T/H modes) is currently unsupported in basisu, but we do support ETC2 with alpha (using ETC1 for color) - case texture_format::cETC2_RGB: - case texture_format::cETC1: - case texture_format::cETC1S: - { - return unpack_etc1(*static_cast(pBlock), pPixels); - } - case texture_format::cETC2_RGBA: - { - if (!unpack_etc1(static_cast(pBlock)[1], pPixels)) - return false; - unpack_etc2_eac(pBlock, pPixels); - break; - } - case texture_format::cETC2_ALPHA: - { - // Unpack to A - unpack_etc2_eac(pBlock, pPixels); - break; - } - case texture_format::cASTC4x4: - { -#if BASISU_USE_ASTC_DECOMPRESS - const bool astc_srgb = false; - basisu_astc::astc::decompress(reinterpret_cast(pPixels), static_cast(pBlock), astc_srgb, 4, 4); -#else - memset(pPixels, 255, 16 * sizeof(color_rgba)); -#endif - break; - } - case texture_format::cATC_RGB: - { - unpack_atc(pBlock, pPixels); - break; - } - case texture_format::cATC_RGBA_INTERPOLATED_ALPHA: - { - unpack_atc(static_cast(pBlock) + 8, pPixels); - unpack_bc4(pBlock, &pPixels[0].a, sizeof(color_rgba)); - break; - } - case texture_format::cFXT1_RGB: - { - unpack_fxt1(pBlock, pPixels); - break; - } - case texture_format::cPVRTC2_4_RGBA: - { - unpack_pvrtc2(pBlock, pPixels); - break; - } - case texture_format::cETC2_R11_EAC: - { - unpack_etc2_eac_r(static_cast(pBlock), pPixels, 0); - break; - } - case texture_format::cETC2_RG11_EAC: - { - unpack_etc2_eac_rg(pBlock, pPixels); - break; - } - case texture_format::cUASTC4x4: - { - unpack_uastc(pBlock, pPixels); - break; - } - default: - { - assert(0); - // TODO - return false; - } - } - return true; - } - - bool gpu_image::unpack(image& img) const - { - img.resize(get_pixel_width(), get_pixel_height()); - img.set_all(g_black_color); - - if (!img.get_width() || !img.get_height()) - return true; - - if ((m_fmt == texture_format::cPVRTC1_4_RGB) || (m_fmt == texture_format::cPVRTC1_4_RGBA)) - { - pvrtc4_image pi(m_width, m_height); - - if (get_total_blocks() != pi.get_total_blocks()) - return false; - - memcpy(&pi.get_blocks()[0], get_ptr(), get_size_in_bytes()); - - pi.deswizzle(); - - pi.unpack_all_pixels(img); - - return true; - } - - assert((m_block_width <= cMaxBlockSize) && (m_block_height <= cMaxBlockSize)); - color_rgba pixels[cMaxBlockSize * cMaxBlockSize]; - for (uint32_t i = 0; i < cMaxBlockSize * cMaxBlockSize; i++) - pixels[i] = g_black_color; - - bool success = true; - - for (uint32_t by = 0; by < m_blocks_y; by++) - { - for (uint32_t bx = 0; bx < m_blocks_x; bx++) - { - const void* pBlock = get_block_ptr(bx, by); - - if (!unpack_block(m_fmt, pBlock, pixels)) - success = false; - - img.set_block_clipped(pixels, bx * m_block_width, by * m_block_height, m_block_width, m_block_height); - } // bx - } // by - - return success; - } - - static const uint8_t g_ktx_file_id[12] = { 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x31, 0x31, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A }; - - // KTX/GL enums - enum - { - KTX_ENDIAN = 0x04030201, - KTX_OPPOSITE_ENDIAN = 0x01020304, - KTX_ETC1_RGB8_OES = 0x8D64, - KTX_RED = 0x1903, - KTX_RG = 0x8227, - KTX_RGB = 0x1907, - KTX_RGBA = 0x1908, - KTX_COMPRESSED_RGB_S3TC_DXT1_EXT = 0x83F0, - KTX_COMPRESSED_RGBA_S3TC_DXT5_EXT = 0x83F3, - KTX_COMPRESSED_RED_RGTC1_EXT = 0x8DBB, - KTX_COMPRESSED_RED_GREEN_RGTC2_EXT = 0x8DBD, - KTX_COMPRESSED_RGB8_ETC2 = 0x9274, - KTX_COMPRESSED_RGBA8_ETC2_EAC = 0x9278, - KTX_COMPRESSED_RGBA_BPTC_UNORM = 0x8E8C, - KTX_COMPRESSED_SRGB_ALPHA_BPTC_UNORM = 0x8E8D, - KTX_COMPRESSED_RGB_PVRTC_4BPPV1_IMG = 0x8C00, - KTX_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG = 0x8C02, - KTX_COMPRESSED_RGBA_ASTC_4x4_KHR = 0x93B0, - KTX_COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR = 0x93D0, - KTX_COMPRESSED_RGBA_UASTC_4x4_KHR = 0x94CC, // TODO - Use proper value! - KTX_ATC_RGB_AMD = 0x8C92, - KTX_ATC_RGBA_INTERPOLATED_ALPHA_AMD = 0x87EE, - KTX_COMPRESSED_RGB_FXT1_3DFX = 0x86B0, - KTX_COMPRESSED_RGBA_FXT1_3DFX = 0x86B1, - KTX_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG = 0x9138, - KTX_COMPRESSED_R11_EAC = 0x9270, - KTX_COMPRESSED_RG11_EAC = 0x9272 - }; - - struct ktx_header - { - uint8_t m_identifier[12]; - packed_uint<4> m_endianness; - packed_uint<4> m_glType; - packed_uint<4> m_glTypeSize; - packed_uint<4> m_glFormat; - packed_uint<4> m_glInternalFormat; - packed_uint<4> m_glBaseInternalFormat; - packed_uint<4> m_pixelWidth; - packed_uint<4> m_pixelHeight; - packed_uint<4> m_pixelDepth; - packed_uint<4> m_numberOfArrayElements; - packed_uint<4> m_numberOfFaces; - packed_uint<4> m_numberOfMipmapLevels; - packed_uint<4> m_bytesOfKeyValueData; - - void clear() { clear_obj(*this); } - }; - - // Input is a texture array of mipmapped gpu_image's: gpu_images[array_index][level_index] - bool create_ktx_texture_file(uint8_vec &ktx_data, const basisu::vector& gpu_images, bool cubemap_flag) - { - if (!gpu_images.size()) - { - assert(0); - return false; - } - - uint32_t width = 0, height = 0, total_levels = 0; - basisu::texture_format fmt = texture_format::cInvalidTextureFormat; - - if (cubemap_flag) - { - if ((gpu_images.size() % 6) != 0) - { - assert(0); - return false; - } - } - - for (uint32_t array_index = 0; array_index < gpu_images.size(); array_index++) - { - const gpu_image_vec &levels = gpu_images[array_index]; - - if (!levels.size()) - { - // Empty mip chain - assert(0); - return false; - } - - if (!array_index) - { - width = levels[0].get_pixel_width(); - height = levels[0].get_pixel_height(); - total_levels = (uint32_t)levels.size(); - fmt = levels[0].get_format(); - } - else - { - if ((width != levels[0].get_pixel_width()) || - (height != levels[0].get_pixel_height()) || - (total_levels != levels.size())) - { - // All cubemap/texture array faces must be the same dimension - assert(0); - return false; - } - } - - for (uint32_t level_index = 0; level_index < levels.size(); level_index++) - { - if (level_index) - { - if ( (levels[level_index].get_pixel_width() != maximum(1, levels[0].get_pixel_width() >> level_index)) || - (levels[level_index].get_pixel_height() != maximum(1, levels[0].get_pixel_height() >> level_index)) ) - { - // Malformed mipmap chain - assert(0); - return false; - } - } - - if (fmt != levels[level_index].get_format()) - { - // All input textures must use the same GPU format - assert(0); - return false; - } - } - } - - uint32_t internal_fmt = KTX_ETC1_RGB8_OES, base_internal_fmt = KTX_RGB; - - switch (fmt) - { - case texture_format::cBC1: - case texture_format::cBC1_NV: - case texture_format::cBC1_AMD: - { - internal_fmt = KTX_COMPRESSED_RGB_S3TC_DXT1_EXT; - break; - } - case texture_format::cBC3: - { - internal_fmt = KTX_COMPRESSED_RGBA_S3TC_DXT5_EXT; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cBC4: - { - internal_fmt = KTX_COMPRESSED_RED_RGTC1_EXT;// KTX_COMPRESSED_LUMINANCE_LATC1_EXT; - base_internal_fmt = KTX_RED; - break; - } - case texture_format::cBC5: - { - internal_fmt = KTX_COMPRESSED_RED_GREEN_RGTC2_EXT; - base_internal_fmt = KTX_RG; - break; - } - case texture_format::cETC1: - case texture_format::cETC1S: - { - internal_fmt = KTX_ETC1_RGB8_OES; - break; - } - case texture_format::cETC2_RGB: - { - internal_fmt = KTX_COMPRESSED_RGB8_ETC2; - break; - } - case texture_format::cETC2_RGBA: - { - internal_fmt = KTX_COMPRESSED_RGBA8_ETC2_EAC; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cBC7: - { - internal_fmt = KTX_COMPRESSED_RGBA_BPTC_UNORM; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cPVRTC1_4_RGB: - { - internal_fmt = KTX_COMPRESSED_RGB_PVRTC_4BPPV1_IMG; - break; - } - case texture_format::cPVRTC1_4_RGBA: - { - internal_fmt = KTX_COMPRESSED_RGBA_PVRTC_4BPPV1_IMG; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cASTC4x4: - { - internal_fmt = KTX_COMPRESSED_RGBA_ASTC_4x4_KHR; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cATC_RGB: - { - internal_fmt = KTX_ATC_RGB_AMD; - break; - } - case texture_format::cATC_RGBA_INTERPOLATED_ALPHA: - { - internal_fmt = KTX_ATC_RGBA_INTERPOLATED_ALPHA_AMD; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cETC2_R11_EAC: - { - internal_fmt = KTX_COMPRESSED_R11_EAC; - base_internal_fmt = KTX_RED; - break; - } - case texture_format::cETC2_RG11_EAC: - { - internal_fmt = KTX_COMPRESSED_RG11_EAC; - base_internal_fmt = KTX_RG; - break; - } - case texture_format::cUASTC4x4: - { - internal_fmt = KTX_COMPRESSED_RGBA_UASTC_4x4_KHR; - base_internal_fmt = KTX_RGBA; - break; - } - case texture_format::cFXT1_RGB: - { - internal_fmt = KTX_COMPRESSED_RGB_FXT1_3DFX; - break; - } - case texture_format::cPVRTC2_4_RGBA: - { - internal_fmt = KTX_COMPRESSED_RGBA_PVRTC_4BPPV2_IMG; - base_internal_fmt = KTX_RGBA; - break; - } - default: - { - // TODO - assert(0); - return false; - } - } - - ktx_header header; - header.clear(); - memcpy(&header.m_identifier, g_ktx_file_id, sizeof(g_ktx_file_id)); - header.m_endianness = KTX_ENDIAN; - - header.m_pixelWidth = width; - header.m_pixelHeight = height; - - header.m_glTypeSize = 1; - - header.m_glInternalFormat = internal_fmt; - header.m_glBaseInternalFormat = base_internal_fmt; - - header.m_numberOfArrayElements = (uint32_t)(cubemap_flag ? (gpu_images.size() / 6) : gpu_images.size()); - if (header.m_numberOfArrayElements == 1) - header.m_numberOfArrayElements = 0; - - header.m_numberOfMipmapLevels = total_levels; - header.m_numberOfFaces = cubemap_flag ? 6 : 1; - - append_vector(ktx_data, (uint8_t *)&header, sizeof(header)); - - for (uint32_t level_index = 0; level_index < total_levels; level_index++) - { - uint32_t img_size = gpu_images[0][level_index].get_size_in_bytes(); - - if ((header.m_numberOfFaces == 1) || (header.m_numberOfArrayElements > 1)) - { - img_size = img_size * header.m_numberOfFaces * maximum(1, header.m_numberOfArrayElements); - } - - assert(img_size && ((img_size & 3) == 0)); - - packed_uint<4> packed_img_size(img_size); - append_vector(ktx_data, (uint8_t *)&packed_img_size, sizeof(packed_img_size)); - - uint32_t bytes_written = 0; - - for (uint32_t array_index = 0; array_index < maximum(1, header.m_numberOfArrayElements); array_index++) - { - for (uint32_t face_index = 0; face_index < header.m_numberOfFaces; face_index++) - { - const gpu_image& img = gpu_images[cubemap_flag ? (array_index * 6 + face_index) : array_index][level_index]; - - append_vector(ktx_data, (uint8_t *)img.get_ptr(), img.get_size_in_bytes()); - - bytes_written += img.get_size_in_bytes(); - } - - } // array_index - - } // level_index - - return true; - } - - bool write_compressed_texture_file(const char* pFilename, const basisu::vector& g, bool cubemap_flag) - { - std::string extension(string_tolower(string_get_extension(pFilename))); - - uint8_vec filedata; - if (extension == "ktx") - { - if (!create_ktx_texture_file(filedata, g, cubemap_flag)) - return false; - } - else if (extension == "pvr") - { - // TODO - return false; - } - else if (extension == "dds") - { - // TODO - return false; - } - else - { - // unsupported texture format - assert(0); - return false; - } - - return basisu::write_vec_to_file(pFilename, filedata); - } - - bool write_compressed_texture_file(const char* pFilename, const gpu_image& g) - { - basisu::vector v; - enlarge_vector(v, 1)->push_back(g); - return write_compressed_texture_file(pFilename, v, false); - } - - //const uint32_t OUT_FILE_MAGIC = 'TEXC'; - struct out_file_header - { - packed_uint<4> m_magic; - packed_uint<4> m_pad; - packed_uint<4> m_width; - packed_uint<4> m_height; - }; - - // As no modern tool supports FXT1 format .KTX files, let's write .OUT files and make sure 3DFX's original tools shipped in 1999 can decode our encoded output. - bool write_3dfx_out_file(const char* pFilename, const gpu_image& gi) - { - out_file_header hdr; - //hdr.m_magic = OUT_FILE_MAGIC; - hdr.m_magic.m_bytes[0] = 67; - hdr.m_magic.m_bytes[1] = 88; - hdr.m_magic.m_bytes[2] = 69; - hdr.m_magic.m_bytes[3] = 84; - hdr.m_pad = 0; - hdr.m_width = gi.get_blocks_x() * 8; - hdr.m_height = gi.get_blocks_y() * 4; - - FILE* pFile = nullptr; -#ifdef _WIN32 - fopen_s(&pFile, pFilename, "wb"); -#else - pFile = fopen(pFilename, "wb"); -#endif - if (!pFile) - return false; - - fwrite(&hdr, sizeof(hdr), 1, pFile); - fwrite(gi.get_ptr(), gi.get_size_in_bytes(), 1, pFile); - - return fclose(pFile) != EOF; - } -} // basisu - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_gpu_texture.h b/WickedEngine/Utility/basis_universal/encoder/basisu_gpu_texture.h deleted file mode 100644 index 619926f5f..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_gpu_texture.h +++ /dev/null @@ -1,154 +0,0 @@ -// basisu_gpu_texture.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "../transcoder/basisu.h" -#include "basisu_etc.h" - -namespace basisu -{ - // GPU texture "image" - class gpu_image - { - public: - enum { cMaxBlockSize = 12 }; - - gpu_image() - { - clear(); - } - - gpu_image(texture_format fmt, uint32_t width, uint32_t height) - { - init(fmt, width, height); - } - - void clear() - { - m_fmt = texture_format::cInvalidTextureFormat; - m_width = 0; - m_height = 0; - m_block_width = 0; - m_block_height = 0; - m_blocks_x = 0; - m_blocks_y = 0; - m_qwords_per_block = 0; - m_blocks.clear(); - } - - inline texture_format get_format() const { return m_fmt; } - - // Width/height in pixels - inline uint32_t get_pixel_width() const { return m_width; } - inline uint32_t get_pixel_height() const { return m_height; } - - // Width/height in blocks, row pitch is assumed to be m_blocks_x. - inline uint32_t get_blocks_x() const { return m_blocks_x; } - inline uint32_t get_blocks_y() const { return m_blocks_y; } - - // Size of each block in pixels - inline uint32_t get_block_width() const { return m_block_width; } - inline uint32_t get_block_height() const { return m_block_height; } - - inline uint32_t get_qwords_per_block() const { return m_qwords_per_block; } - inline uint32_t get_total_blocks() const { return m_blocks_x * m_blocks_y; } - inline uint32_t get_bytes_per_block() const { return get_qwords_per_block() * sizeof(uint64_t); } - inline uint32_t get_row_pitch_in_bytes() const { return get_bytes_per_block() * get_blocks_x(); } - - inline const uint64_vec &get_blocks() const { return m_blocks; } - - inline const uint64_t *get_ptr() const { return &m_blocks[0]; } - inline uint64_t *get_ptr() { return &m_blocks[0]; } - - inline uint32_t get_size_in_bytes() const { return get_total_blocks() * get_qwords_per_block() * sizeof(uint64_t); } - - inline const void *get_block_ptr(uint32_t block_x, uint32_t block_y, uint32_t element_index = 0) const - { - assert(block_x < m_blocks_x && block_y < m_blocks_y); - return &m_blocks[(block_x + block_y * m_blocks_x) * m_qwords_per_block + element_index]; - } - - inline void *get_block_ptr(uint32_t block_x, uint32_t block_y, uint32_t element_index = 0) - { - assert(block_x < m_blocks_x && block_y < m_blocks_y && element_index < m_qwords_per_block); - return &m_blocks[(block_x + block_y * m_blocks_x) * m_qwords_per_block + element_index]; - } - - void init(texture_format fmt, uint32_t width, uint32_t height) - { - m_fmt = fmt; - m_width = width; - m_height = height; - m_block_width = basisu::get_block_width(m_fmt); - m_block_height = basisu::get_block_height(m_fmt); - m_blocks_x = (m_width + m_block_width - 1) / m_block_width; - m_blocks_y = (m_height + m_block_height - 1) / m_block_height; - m_qwords_per_block = basisu::get_qwords_per_block(m_fmt); - - m_blocks.resize(0); - m_blocks.resize(m_blocks_x * m_blocks_y * m_qwords_per_block); - } - - bool unpack(image& img) const; - - void override_dimensions(uint32_t w, uint32_t h) - { - m_width = w; - m_height = h; - } - - private: - texture_format m_fmt; - uint32_t m_width, m_height, m_blocks_x, m_blocks_y, m_block_width, m_block_height, m_qwords_per_block; - uint64_vec m_blocks; - }; - - typedef basisu::vector gpu_image_vec; - - // KTX file writing - - bool create_ktx_texture_file(uint8_vec &ktx_data, const basisu::vector& gpu_images, bool cubemap_flag); - - bool write_compressed_texture_file(const char *pFilename, const basisu::vector& g, bool cubemap_flag); - - inline bool write_compressed_texture_file(const char *pFilename, const gpu_image_vec &g) - { - basisu::vector a; - a.push_back(g); - return write_compressed_texture_file(pFilename, a, false); - } - - bool write_compressed_texture_file(const char *pFilename, const gpu_image &g); - - bool write_3dfx_out_file(const char* pFilename, const gpu_image& gi); - - // GPU texture block unpacking - void unpack_etc2_eac(const void *pBlock_bits, color_rgba *pPixels); - bool unpack_bc1(const void *pBlock_bits, color_rgba *pPixels, bool set_alpha); - void unpack_bc4(const void *pBlock_bits, uint8_t *pPixels, uint32_t stride); - bool unpack_bc3(const void *pBlock_bits, color_rgba *pPixels); - void unpack_bc5(const void *pBlock_bits, color_rgba *pPixels); - bool unpack_bc7_mode6(const void *pBlock_bits, color_rgba *pPixels); - bool unpack_bc7(const void* pBlock_bits, color_rgba* pPixels); - void unpack_atc(const void* pBlock_bits, color_rgba* pPixels); - bool unpack_fxt1(const void* p, color_rgba* pPixels); - bool unpack_pvrtc2(const void* p, color_rgba* pPixels); - void unpack_etc2_eac_r(const void *p, color_rgba* pPixels, uint32_t c); - void unpack_etc2_eac_rg(const void* p, color_rgba* pPixels); - - // unpack_block() is primarily intended to unpack texture data created by the transcoder. - // For some texture formats (like ETC2 RGB, PVRTC2, FXT1) it's not a complete implementation. - bool unpack_block(texture_format fmt, const void *pBlock, color_rgba *pPixels); - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_declares.h b/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_declares.h deleted file mode 100644 index b03e2ea6e..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_declares.h +++ /dev/null @@ -1,27 +0,0 @@ -// basisu_kernels_declares.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#if BASISU_SUPPORT_SSE -void CPPSPMD_NAME(perceptual_distance_rgb_4_N)(int64_t* pDistance, const uint8_t* pSelectors, const basisu::color_rgba* pBlock_colors, const basisu::color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err); -void CPPSPMD_NAME(linear_distance_rgb_4_N)(int64_t* pDistance, const uint8_t* pSelectors, const basisu::color_rgba* pBlock_colors, const basisu::color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err); - -void CPPSPMD_NAME(find_selectors_perceptual_rgb_4_N)(int64_t* pDistance, uint8_t* pSelectors, const basisu::color_rgba* pBlock_colors, const basisu::color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err); -void CPPSPMD_NAME(find_selectors_linear_rgb_4_N)(int64_t* pDistance, uint8_t* pSelectors, const basisu::color_rgba* pBlock_colors, const basisu::color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err); - -void CPPSPMD_NAME(find_lowest_error_perceptual_rgb_4_N)(int64_t* pDistance, const basisu::color_rgba* pBlock_colors, const basisu::color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_error); -void CPPSPMD_NAME(find_lowest_error_linear_rgb_4_N)(int64_t* pDistance, const basisu::color_rgba* pBlock_colors, const basisu::color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_error); - -void CPPSPMD_NAME(update_covar_matrix_16x16)(uint32_t num_vecs, const void* pWeighted_vecs, const void *pOrigin, const uint32_t* pVec_indices, void *pMatrix16x16); -#endif diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_imp.h b/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_imp.h deleted file mode 100644 index dcf1ce069..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_imp.h +++ /dev/null @@ -1,647 +0,0 @@ -// basisu_kernels_imp.h - Do not directly include -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -using namespace CPPSPMD; - -namespace CPPSPMD_NAME(basisu_kernels_namespace) -{ - struct perceptual_distance_rgb_4_N : spmd_kernel - { - void _call(int64_t* pDistance, - const uint8_t* pSelectors, - const color_rgba* pBlock_colors, - const color_rgba* pSrc_pixels, uint32_t n, - int64_t early_out_err) - { - assert(early_out_err >= 0); - - *pDistance = 0; - - __m128i block_colors[4]; - vint block_colors_r[4], block_colors_g[4], block_colors_b[4]; - for (uint32_t i = 0; i < 4; i++) - { - block_colors[i] = load_rgba32(&pBlock_colors[i]); - store_all(block_colors_r[i], (int)pBlock_colors[i].r); - store_all(block_colors_g[i], (int)pBlock_colors[i].g); - store_all(block_colors_b[i], (int)pBlock_colors[i].b); - } - - uint32_t i; - for (i = 0; (i + 4) <= n; i += 4) - { - __m128i c0 = load_rgba32(&pSrc_pixels[i + 0]), c1 = load_rgba32(&pSrc_pixels[i + 1]), c2 = load_rgba32(&pSrc_pixels[i + 2]), c3 = load_rgba32(&pSrc_pixels[i + 3]); - - vint r, g, b, a; - transpose4x4(r.m_value, g.m_value, b.m_value, a.m_value, c0, c1, c2, c3); - - int s0 = pSelectors[i], s1 = pSelectors[i + 1], s2 = pSelectors[i + 2], s3 = pSelectors[i + 3]; - - vint base_r, base_g, base_b, base_a; - if ((s0 == s1) && (s0 == s2) && (s0 == s3)) - { - store_all(base_r, block_colors_r[s0]); - store_all(base_g, block_colors_g[s0]); - store_all(base_b, block_colors_b[s0]); - } - else - { - __m128i k0 = block_colors[s0], k1 = block_colors[s1], k2 = block_colors[s2], k3 = block_colors[s3]; - transpose4x4(base_r.m_value, base_g.m_value, base_b.m_value, base_a.m_value, k0, k1, k2, k3); - } - - vint dr = base_r - r; - vint dg = base_g - g; - vint db = base_b - b; - - vint delta_l = dr * 27 + dg * 92 + db * 9; - vint delta_cr = dr * 128 - delta_l; - vint delta_cb = db * 128 - delta_l; - - vint id = ((delta_l * delta_l) >> 7) + - ((((delta_cr * delta_cr) >> 7) * 26) >> 7) + - ((((delta_cb * delta_cb) >> 7) * 3) >> 7); - - *pDistance += reduce_add(id); - if (*pDistance >= early_out_err) - return; - } - - for (; i < n; i++) - { - int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - - int sel = pSelectors[i]; - int base_r = pBlock_colors[sel].r, base_g = pBlock_colors[sel].g, base_b = pBlock_colors[sel].b; - - int dr = base_r - r; - int dg = base_g - g; - int db = base_b - b; - - int delta_l = dr * 27 + dg * 92 + db * 9; - int delta_cr = dr * 128 - delta_l; - int delta_cb = db * 128 - delta_l; - - int id = ((delta_l * delta_l) >> 7) + - ((((delta_cr * delta_cr) >> 7) * 26) >> 7) + - ((((delta_cb * delta_cb) >> 7) * 3) >> 7); - - *pDistance += id; - if (*pDistance >= early_out_err) - return; - } - } - }; - - struct linear_distance_rgb_4_N : spmd_kernel - { - void _call(int64_t* pDistance, - const uint8_t* pSelectors, - const color_rgba* pBlock_colors, - const color_rgba* pSrc_pixels, uint32_t n, - int64_t early_out_err) - { - assert(early_out_err >= 0); - - *pDistance = 0; - - __m128i block_colors[4]; - vint block_colors_r[4], block_colors_g[4], block_colors_b[4]; - for (uint32_t i = 0; i < 4; i++) - { - block_colors[i] = load_rgba32(&pBlock_colors[i]); - store_all(block_colors_r[i], (int)pBlock_colors[i].r); - store_all(block_colors_g[i], (int)pBlock_colors[i].g); - store_all(block_colors_b[i], (int)pBlock_colors[i].b); - } - - uint32_t i; - for (i = 0; (i + 4) <= n; i += 4) - { - __m128i c0 = load_rgba32(&pSrc_pixels[i + 0]), c1 = load_rgba32(&pSrc_pixels[i + 1]), c2 = load_rgba32(&pSrc_pixels[i + 2]), c3 = load_rgba32(&pSrc_pixels[i + 3]); - - vint r, g, b, a; - transpose4x4(r.m_value, g.m_value, b.m_value, a.m_value, c0, c1, c2, c3); - - int s0 = pSelectors[i], s1 = pSelectors[i + 1], s2 = pSelectors[i + 2], s3 = pSelectors[i + 3]; - - vint base_r, base_g, base_b, base_a; - if ((s0 == s1) && (s0 == s2) && (s0 == s3)) - { - store_all(base_r, block_colors_r[s0]); - store_all(base_g, block_colors_g[s0]); - store_all(base_b, block_colors_b[s0]); - } - else - { - __m128i k0 = block_colors[s0], k1 = block_colors[s1], k2 = block_colors[s2], k3 = block_colors[s3]; - transpose4x4(base_r.m_value, base_g.m_value, base_b.m_value, base_a.m_value, k0, k1, k2, k3); - } - - vint dr = base_r - r; - vint dg = base_g - g; - vint db = base_b - b; - - vint id = dr * dr + dg * dg + db * db; - - *pDistance += reduce_add(id); - if (*pDistance >= early_out_err) - return; - } - - for (; i < n; i++) - { - int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - - int sel = pSelectors[i]; - int base_r = pBlock_colors[sel].r, base_g = pBlock_colors[sel].g, base_b = pBlock_colors[sel].b; - - int dr = base_r - r; - int dg = base_g - g; - int db = base_b - b; - - int id = dr * dr + dg * dg + db * db; - - *pDistance += id; - if (*pDistance >= early_out_err) - return; - } - } - }; - - struct find_selectors_perceptual_rgb_4_N : spmd_kernel - { - inline vint compute_dist( - const vint& base_r, const vint& base_g, const vint& base_b, - const vint& r, const vint& g, const vint& b) - { - vint dr = base_r - r; - vint dg = base_g - g; - vint db = base_b - b; - - vint delta_l = dr * 27 + dg * 92 + db * 9; - vint delta_cr = dr * 128 - delta_l; - vint delta_cb = db * 128 - delta_l; - - vint id = VINT_SHIFT_RIGHT(delta_l * delta_l, 7) + - VINT_SHIFT_RIGHT(VINT_SHIFT_RIGHT(delta_cr * delta_cr, 7) * 26, 7) + - VINT_SHIFT_RIGHT(VINT_SHIFT_RIGHT(delta_cb * delta_cb, 7) * 3, 7); - - return id; - } - - void _call(int64_t* pDistance, - uint8_t* pSelectors, - const color_rgba* pBlock_colors, - const color_rgba* pSrc_pixels, uint32_t n, - int64_t early_out_err) - { - assert(early_out_err >= 0); - - *pDistance = 0; - - vint block_colors_r[4], block_colors_g[4], block_colors_b[4]; - for (uint32_t i = 0; i < 4; i++) - { - store_all(block_colors_r[i], (int)pBlock_colors[i].r); - store_all(block_colors_g[i], (int)pBlock_colors[i].g); - store_all(block_colors_b[i], (int)pBlock_colors[i].b); - } - - const __m128i shuf = _mm_set_epi8(-128, -128, -128, -128, -128, -128, -128, -128, -128, -128, -128, -128, 12, 8, 4, 0); - - uint32_t i; - - for (i = 0; (i + 4) <= n; i += 4) - { - __m128i c0 = load_rgba32(&pSrc_pixels[i + 0]), c1 = load_rgba32(&pSrc_pixels[i + 1]), c2 = load_rgba32(&pSrc_pixels[i + 2]), c3 = load_rgba32(&pSrc_pixels[i + 3]); - - vint r, g, b, a; - transpose4x4(r.m_value, g.m_value, b.m_value, a.m_value, c0, c1, c2, c3); - - vint dist0 = compute_dist(block_colors_r[0], block_colors_g[0], block_colors_b[0], r, g, b); - vint dist1 = compute_dist(block_colors_r[1], block_colors_g[1], block_colors_b[1], r, g, b); - vint dist2 = compute_dist(block_colors_r[2], block_colors_g[2], block_colors_b[2], r, g, b); - vint dist3 = compute_dist(block_colors_r[3], block_colors_g[3], block_colors_b[3], r, g, b); - - vint min_dist = min(min(min(dist0, dist1), dist2), dist3); - - vint sels = spmd_ternaryi(min_dist == dist0, 0, spmd_ternaryi(min_dist == dist1, 1, spmd_ternaryi(min_dist == dist2, 2, 3))); - - __m128i vsels = shuffle_epi8(sels.m_value, shuf); - storeu_si32((void *)(pSelectors + i), vsels); - - *pDistance += reduce_add(min_dist); - if (*pDistance >= early_out_err) - return; - } - - for (; i < n; i++) - { - int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - - int best_err = INT_MAX, best_sel = 0; - for (int sel = 0; sel < 4; sel++) - { - int base_r = pBlock_colors[sel].r, base_g = pBlock_colors[sel].g, base_b = pBlock_colors[sel].b; - - int dr = base_r - r; - int dg = base_g - g; - int db = base_b - b; - - int delta_l = dr * 27 + dg * 92 + db * 9; - int delta_cr = dr * 128 - delta_l; - int delta_cb = db * 128 - delta_l; - - int id = ((delta_l * delta_l) >> 7) + - ((((delta_cr * delta_cr) >> 7) * 26) >> 7) + - ((((delta_cb * delta_cb) >> 7) * 3) >> 7); - if (id < best_err) - { - best_err = id; - best_sel = sel; - } - } - - pSelectors[i] = (uint8_t)best_sel; - - *pDistance += best_err; - if (*pDistance >= early_out_err) - return; - } - } - }; - - struct find_selectors_linear_rgb_4_N : spmd_kernel - { - inline vint compute_dist( - const vint& base_r, const vint& base_g, const vint& base_b, - const vint& r, const vint& g, const vint& b) - { - vint dr = base_r - r; - vint dg = base_g - g; - vint db = base_b - b; - - vint id = dr * dr + dg * dg + db * db; - return id; - } - - void _call(int64_t* pDistance, - uint8_t* pSelectors, - const color_rgba* pBlock_colors, - const color_rgba* pSrc_pixels, uint32_t n, - int64_t early_out_err) - { - assert(early_out_err >= 0); - - *pDistance = 0; - - vint block_colors_r[4], block_colors_g[4], block_colors_b[4]; - for (uint32_t i = 0; i < 4; i++) - { - store_all(block_colors_r[i], (int)pBlock_colors[i].r); - store_all(block_colors_g[i], (int)pBlock_colors[i].g); - store_all(block_colors_b[i], (int)pBlock_colors[i].b); - } - - const __m128i shuf = _mm_set_epi8(-128, -128, -128, -128, -128, -128, -128, -128, -128, -128, -128, -128, 12, 8, 4, 0); - - uint32_t i; - - for (i = 0; (i + 4) <= n; i += 4) - { - __m128i c0 = load_rgba32(&pSrc_pixels[i + 0]), c1 = load_rgba32(&pSrc_pixels[i + 1]), c2 = load_rgba32(&pSrc_pixels[i + 2]), c3 = load_rgba32(&pSrc_pixels[i + 3]); - - vint r, g, b, a; - transpose4x4(r.m_value, g.m_value, b.m_value, a.m_value, c0, c1, c2, c3); - - vint dist0 = compute_dist(block_colors_r[0], block_colors_g[0], block_colors_b[0], r, g, b); - vint dist1 = compute_dist(block_colors_r[1], block_colors_g[1], block_colors_b[1], r, g, b); - vint dist2 = compute_dist(block_colors_r[2], block_colors_g[2], block_colors_b[2], r, g, b); - vint dist3 = compute_dist(block_colors_r[3], block_colors_g[3], block_colors_b[3], r, g, b); - - vint min_dist = min(min(min(dist0, dist1), dist2), dist3); - - vint sels = spmd_ternaryi(min_dist == dist0, 0, spmd_ternaryi(min_dist == dist1, 1, spmd_ternaryi(min_dist == dist2, 2, 3))); - - __m128i vsels = shuffle_epi8(sels.m_value, shuf); - storeu_si32((void *)(pSelectors + i), vsels); - - *pDistance += reduce_add(min_dist); - if (*pDistance >= early_out_err) - return; - } - - for (; i < n; i++) - { - int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - - int best_err = INT_MAX, best_sel = 0; - for (int sel = 0; sel < 4; sel++) - { - int base_r = pBlock_colors[sel].r, base_g = pBlock_colors[sel].g, base_b = pBlock_colors[sel].b; - - int dr = base_r - r; - int dg = base_g - g; - int db = base_b - b; - - int id = dr * dr + dg * dg + db * db; - if (id < best_err) - { - best_err = id; - best_sel = sel; - } - } - - pSelectors[i] = (uint8_t)best_sel; - - *pDistance += best_err; - if (*pDistance >= early_out_err) - return; - } - } - }; - - struct find_lowest_error_perceptual_rgb_4_N : spmd_kernel - { - inline vint compute_dist( - const vint& base_r, const vint& base_g, const vint& base_b, - const vint& r, const vint& g, const vint& b) - { - vint dr = base_r - r; - vint dg = base_g - g; - vint db = base_b - b; - - vint delta_l = dr * 27 + dg * 92 + db * 9; - vint delta_cr = dr * 128 - delta_l; - vint delta_cb = db * 128 - delta_l; - - vint id = VINT_SHIFT_RIGHT(delta_l * delta_l, 7) + - VINT_SHIFT_RIGHT(VINT_SHIFT_RIGHT(delta_cr * delta_cr, 7) * 26, 7) + - VINT_SHIFT_RIGHT(VINT_SHIFT_RIGHT(delta_cb * delta_cb, 7) * 3, 7); - - return id; - } - - void _call(int64_t* pDistance, - const color_rgba* pBlock_colors, - const color_rgba* pSrc_pixels, uint32_t n, - int64_t early_out_error) - { - assert(early_out_error >= 0); - - *pDistance = 0; - - vint block_colors_r[4], block_colors_g[4], block_colors_b[4]; - for (uint32_t i = 0; i < 4; i++) - { - store_all(block_colors_r[i], (int)pBlock_colors[i].r); - store_all(block_colors_g[i], (int)pBlock_colors[i].g); - store_all(block_colors_b[i], (int)pBlock_colors[i].b); - } - - uint32_t i; - - for (i = 0; (i + 4) <= n; i += 4) - { - __m128i c0 = load_rgba32(&pSrc_pixels[i + 0]), c1 = load_rgba32(&pSrc_pixels[i + 1]), c2 = load_rgba32(&pSrc_pixels[i + 2]), c3 = load_rgba32(&pSrc_pixels[i + 3]); - - vint r, g, b, a; - transpose4x4(r.m_value, g.m_value, b.m_value, a.m_value, c0, c1, c2, c3); - - vint dist0 = compute_dist(block_colors_r[0], block_colors_g[0], block_colors_b[0], r, g, b); - vint dist1 = compute_dist(block_colors_r[1], block_colors_g[1], block_colors_b[1], r, g, b); - vint dist2 = compute_dist(block_colors_r[2], block_colors_g[2], block_colors_b[2], r, g, b); - vint dist3 = compute_dist(block_colors_r[3], block_colors_g[3], block_colors_b[3], r, g, b); - - vint min_dist = min(min(min(dist0, dist1), dist2), dist3); - - *pDistance += reduce_add(min_dist); - if (*pDistance > early_out_error) - return; - } - - for (; i < n; i++) - { - int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - - int best_err = INT_MAX; - for (int sel = 0; sel < 4; sel++) - { - int base_r = pBlock_colors[sel].r, base_g = pBlock_colors[sel].g, base_b = pBlock_colors[sel].b; - - int dr = base_r - r; - int dg = base_g - g; - int db = base_b - b; - - int delta_l = dr * 27 + dg * 92 + db * 9; - int delta_cr = dr * 128 - delta_l; - int delta_cb = db * 128 - delta_l; - - int id = ((delta_l * delta_l) >> 7) + - ((((delta_cr * delta_cr) >> 7) * 26) >> 7) + - ((((delta_cb * delta_cb) >> 7) * 3) >> 7); - - if (id < best_err) - { - best_err = id; - } - } - - *pDistance += best_err; - if (*pDistance > early_out_error) - return; - } - } - }; - - struct find_lowest_error_linear_rgb_4_N : spmd_kernel - { - inline vint compute_dist( - const vint& base_r, const vint& base_g, const vint& base_b, - const vint& r, const vint& g, const vint& b) - { - vint dr = base_r - r; - vint dg = base_g - g; - vint db = base_b - b; - - vint id = dr * dr + dg * dg + db * db; - - return id; - } - - void _call(int64_t* pDistance, - const color_rgba* pBlock_colors, - const color_rgba* pSrc_pixels, uint32_t n, - int64_t early_out_error) - { - assert(early_out_error >= 0); - - *pDistance = 0; - - vint block_colors_r[4], block_colors_g[4], block_colors_b[4]; - for (uint32_t i = 0; i < 4; i++) - { - store_all(block_colors_r[i], (int)pBlock_colors[i].r); - store_all(block_colors_g[i], (int)pBlock_colors[i].g); - store_all(block_colors_b[i], (int)pBlock_colors[i].b); - } - - uint32_t i; - - for (i = 0; (i + 4) <= n; i += 4) - { - __m128i c0 = load_rgba32(&pSrc_pixels[i + 0]), c1 = load_rgba32(&pSrc_pixels[i + 1]), c2 = load_rgba32(&pSrc_pixels[i + 2]), c3 = load_rgba32(&pSrc_pixels[i + 3]); - - vint r, g, b, a; - transpose4x4(r.m_value, g.m_value, b.m_value, a.m_value, c0, c1, c2, c3); - - vint dist0 = compute_dist(block_colors_r[0], block_colors_g[0], block_colors_b[0], r, g, b); - vint dist1 = compute_dist(block_colors_r[1], block_colors_g[1], block_colors_b[1], r, g, b); - vint dist2 = compute_dist(block_colors_r[2], block_colors_g[2], block_colors_b[2], r, g, b); - vint dist3 = compute_dist(block_colors_r[3], block_colors_g[3], block_colors_b[3], r, g, b); - - vint min_dist = min(min(min(dist0, dist1), dist2), dist3); - - *pDistance += reduce_add(min_dist); - if (*pDistance > early_out_error) - return; - } - - for (; i < n; i++) - { - int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - - int best_err = INT_MAX; - for (int sel = 0; sel < 4; sel++) - { - int base_r = pBlock_colors[sel].r, base_g = pBlock_colors[sel].g, base_b = pBlock_colors[sel].b; - - int dr = base_r - r; - int dg = base_g - g; - int db = base_b - b; - - int id = dr * dr + dg * dg + db * db; - - if (id < best_err) - { - best_err = id; - } - } - - *pDistance += best_err; - if (*pDistance > early_out_error) - return; - } - } - }; - - struct update_covar_matrix_16x16 : spmd_kernel - { - void _call( - uint32_t num_vecs, const void* pWeighted_vecs_void, const void* pOrigin_void, const uint32_t* pVec_indices, void* pMatrix16x16_void) - { - const std::pair* pWeighted_vecs = static_cast< const std::pair *>(pWeighted_vecs_void); - - const float* pOrigin = static_cast(pOrigin_void); - vfloat org0 = loadu_linear_all(pOrigin), org1 = loadu_linear_all(pOrigin + 4), org2 = loadu_linear_all(pOrigin + 8), org3 = loadu_linear_all(pOrigin + 12); - - vfloat mat[16][4]; - vfloat vzero(zero_vfloat()); - - for (uint32_t i = 0; i < 16; i++) - { - store_all(mat[i][0], vzero); - store_all(mat[i][1], vzero); - store_all(mat[i][2], vzero); - store_all(mat[i][3], vzero); - } - - for (uint32_t k = 0; k < num_vecs; k++) - { - const uint32_t vec_index = pVec_indices[k]; - - const float* pW = pWeighted_vecs[vec_index].first.get_ptr(); - vfloat weight((float)pWeighted_vecs[vec_index].second); - - vfloat vec[4] = { loadu_linear_all(pW) - org0, loadu_linear_all(pW + 4) - org1, loadu_linear_all(pW + 8) - org2, loadu_linear_all(pW + 12) - org3 }; - - vfloat wvec0 = vec[0] * weight, wvec1 = vec[1] * weight, wvec2 = vec[2] * weight, wvec3 = vec[3] * weight; - - for (uint32_t j = 0; j < 16; j++) - { - vfloat vx = ((const float*)vec)[j]; - - store_all(mat[j][0], mat[j][0] + vx * wvec0); - store_all(mat[j][1], mat[j][1] + vx * wvec1); - store_all(mat[j][2], mat[j][2] + vx * wvec2); - store_all(mat[j][3], mat[j][3] + vx * wvec3); - - } // j - - } // k - - float* pMatrix = static_cast(pMatrix16x16_void); - - float* pDst = pMatrix; - for (uint32_t i = 0; i < 16; i++) - { - storeu_linear_all(pDst, mat[i][0]); - storeu_linear_all(pDst + 4, mat[i][1]); - storeu_linear_all(pDst + 8, mat[i][2]); - storeu_linear_all(pDst + 12, mat[i][3]); - pDst += 16; - } - } - }; - -} // namespace - -using namespace CPPSPMD_NAME(basisu_kernels_namespace); - -void CPPSPMD_NAME(perceptual_distance_rgb_4_N)(int64_t* pDistance, const uint8_t* pSelectors, const color_rgba* pBlock_colors, const color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err) -{ - spmd_call< perceptual_distance_rgb_4_N >(pDistance, pSelectors, pBlock_colors, pSrc_pixels, n, early_out_err); -} - -void CPPSPMD_NAME(linear_distance_rgb_4_N)(int64_t* pDistance, const uint8_t* pSelectors, const color_rgba* pBlock_colors, const color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err) -{ - spmd_call< linear_distance_rgb_4_N >(pDistance, pSelectors, pBlock_colors, pSrc_pixels, n, early_out_err); -} - -void CPPSPMD_NAME(find_selectors_perceptual_rgb_4_N)(int64_t *pDistance, uint8_t* pSelectors, const color_rgba* pBlock_colors, const color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err) -{ - spmd_call< find_selectors_perceptual_rgb_4_N >(pDistance, pSelectors, pBlock_colors, pSrc_pixels, n, early_out_err); -} - -void CPPSPMD_NAME(find_selectors_linear_rgb_4_N)(int64_t* pDistance, uint8_t* pSelectors, const color_rgba* pBlock_colors, const color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_err) -{ - spmd_call< find_selectors_linear_rgb_4_N >(pDistance, pSelectors, pBlock_colors, pSrc_pixels, n, early_out_err); -} - -void CPPSPMD_NAME(find_lowest_error_perceptual_rgb_4_N)(int64_t* pDistance, const color_rgba* pBlock_colors, const color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_error) -{ - spmd_call< find_lowest_error_perceptual_rgb_4_N >(pDistance, pBlock_colors, pSrc_pixels, n, early_out_error); -} - -void CPPSPMD_NAME(find_lowest_error_linear_rgb_4_N)(int64_t* pDistance, const color_rgba* pBlock_colors, const color_rgba* pSrc_pixels, uint32_t n, int64_t early_out_error) -{ - spmd_call< find_lowest_error_linear_rgb_4_N >(pDistance, pBlock_colors, pSrc_pixels, n, early_out_error); -} - -void CPPSPMD_NAME(update_covar_matrix_16x16)(uint32_t num_vecs, const void* pWeighted_vecs, const void* pOrigin, const uint32_t *pVec_indices, void* pMatrix16x16) -{ - spmd_call < update_covar_matrix_16x16 >(num_vecs, pWeighted_vecs, pOrigin, pVec_indices, pMatrix16x16); -} diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_sse.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_sse.cpp deleted file mode 100644 index c368605b0..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_kernels_sse.cpp +++ /dev/null @@ -1,145 +0,0 @@ -// basisu_kernels_sse.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_enc.h" - -#if BASISU_SUPPORT_SSE - -#define CPPSPMD_SSE2 0 - -#ifdef _MSC_VER -#include -#endif - -#include "cppspmd_sse.h" - -#include "cppspmd_type_aliases.h" - -using namespace basisu; - -#include "basisu_kernels_declares.h" -#include "basisu_kernels_imp.h" - -namespace basisu -{ - -struct cpu_info -{ - cpu_info() { memset(this, 0, sizeof(*this)); } - - bool m_has_fpu; - bool m_has_mmx; - bool m_has_sse; - bool m_has_sse2; - bool m_has_sse3; - bool m_has_ssse3; - bool m_has_sse41; - bool m_has_sse42; - bool m_has_avx; - bool m_has_avx2; - bool m_has_pclmulqdq; -}; - -static void extract_x86_flags(cpu_info &info, uint32_t ecx, uint32_t edx) -{ - info.m_has_fpu = (edx & (1 << 0)) != 0; - info.m_has_mmx = (edx & (1 << 23)) != 0; - info.m_has_sse = (edx & (1 << 25)) != 0; - info.m_has_sse2 = (edx & (1 << 26)) != 0; - info.m_has_sse3 = (ecx & (1 << 0)) != 0; - info.m_has_ssse3 = (ecx & (1 << 9)) != 0; - info.m_has_sse41 = (ecx & (1 << 19)) != 0; - info.m_has_sse42 = (ecx & (1 << 20)) != 0; - info.m_has_pclmulqdq = (ecx & (1 << 1)) != 0; - info.m_has_avx = (ecx & (1 << 28)) != 0; -} - -static void extract_x86_extended_flags(cpu_info &info, uint32_t ebx) -{ - info.m_has_avx2 = (ebx & (1 << 5)) != 0; -} - -#ifndef _MSC_VER -static void do_cpuid(uint32_t eax, uint32_t ecx, uint32_t* regs) -{ - uint32_t ebx = 0, edx = 0; - -#if defined(__PIC__) && defined(__i386__) - __asm__("movl %%ebx, %%edi;" - "cpuid;" - "xchgl %%ebx, %%edi;" - : "=D"(ebx), "+a"(eax), "+c"(ecx), "=d"(edx)); -#else - __asm__("cpuid;" : "+b"(ebx), "+a"(eax), "+c"(ecx), "=d"(edx)); -#endif - - regs[0] = eax; regs[1] = ebx; regs[2] = ecx; regs[3] = edx; -} -#endif - -static void get_cpuinfo(cpu_info &info) -{ - int regs[4]; - -#ifdef _MSC_VER - __cpuid(regs, 0); -#else - do_cpuid(0, 0, (uint32_t *)regs); -#endif - - const uint32_t max_eax = regs[0]; - - if (max_eax >= 1U) - { -#ifdef _MSC_VER - __cpuid(regs, 1); -#else - do_cpuid(1, 0, (uint32_t*)regs); -#endif - extract_x86_flags(info, regs[2], regs[3]); - } - - if (max_eax >= 7U) - { -#ifdef _MSC_VER - __cpuidex(regs, 7, 0); -#else - do_cpuid(7, 0, (uint32_t*)regs); -#endif - - extract_x86_extended_flags(info, regs[1]); - } -} - -void detect_sse41() -{ - cpu_info info; - get_cpuinfo(info); - - // Check for everything from SSE to SSE 4.1 - g_cpu_supports_sse41 = info.m_has_sse && info.m_has_sse2 && info.m_has_sse3 && info.m_has_ssse3 && info.m_has_sse41; -} - -} // namespace basisu -#else // #if BASISU_SUPPORT_SSE -namespace basisu -{ - -void detect_sse41() -{ -} - -} // namespace basisu -#endif // #if BASISU_SUPPORT_SSE - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_miniz.h b/WickedEngine/Utility/basis_universal/encoder/basisu_miniz.h deleted file mode 100644 index 18de99723..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_miniz.h +++ /dev/null @@ -1,2531 +0,0 @@ -/* miniz.c v1.15 - deflate/inflate, zlib-subset, ZIP reading/writing/appending, PNG writing - Implements RFC 1950: http://www.ietf.org/rfc/rfc1950.txt and RFC 1951: http://www.ietf.org/rfc/rfc1951.txt - - Forked from the public domain/unlicense version at: https://code.google.com/archive/p/miniz/ - - Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. - - Licensed under the Apache License, Version 2.0 (the "License"); - you may not use this file except in compliance with the License. - You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - - Unless required by applicable law or agreed to in writing, software - distributed under the License is distributed on an "AS IS" BASIS, - WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - See the License for the specific language governing permissions and - limitations under the License. -*/ - -#ifndef MINIZ_HEADER_INCLUDED -#define MINIZ_HEADER_INCLUDED - -#include - -// Defines to completely disable specific portions of miniz.c: -// If all macros here are defined the only functionality remaining will be CRC-32, adler-32, tinfl, and tdefl. - -// Define MINIZ_NO_STDIO to disable all usage and any functions which rely on stdio for file I/O. -//#define MINIZ_NO_STDIO - -// If MINIZ_NO_TIME is specified then the ZIP archive functions will not be able to get the current time, or -// get/set file times, and the C run-time funcs that get/set times won't be called. -// The current downside is the times written to your archives will be from 1979. -//#define MINIZ_NO_TIME - -// Define MINIZ_NO_ARCHIVE_APIS to disable all ZIP archive API's. -//#define MINIZ_NO_ARCHIVE_APIS - -// Define MINIZ_NO_ARCHIVE_APIS to disable all writing related ZIP archive API's. -//#define MINIZ_NO_ARCHIVE_WRITING_APIS - -// Define MINIZ_NO_ZLIB_APIS to remove all ZLIB-style compression/decompression API's. -//#define MINIZ_NO_ZLIB_APIS - -// Define MINIZ_NO_ZLIB_COMPATIBLE_NAME to disable zlib names, to prevent conflicts against stock zlib. -//#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES - -// Define MINIZ_NO_MALLOC to disable all calls to malloc, free, and realloc. -// Note if MINIZ_NO_MALLOC is defined then the user must always provide custom user alloc/free/realloc -// callbacks to the zlib and archive API's, and a few stand-alone helper API's which don't provide custom user -// functions (such as tdefl_compress_mem_to_heap() and tinfl_decompress_mem_to_heap()) won't work. -//#define MINIZ_NO_MALLOC - -#if defined(__TINYC__) && (defined(__linux) || defined(__linux__)) - // TODO: Work around "error: include file 'sys\utime.h' when compiling with tcc on Linux - #define MINIZ_NO_TIME -#endif - -#if !defined(MINIZ_NO_TIME) && !defined(MINIZ_NO_ARCHIVE_APIS) - #include -#endif - -#if defined(_M_IX86) || defined(_M_X64) || defined(__i386__) || defined(__i386) || defined(__i486__) || defined(__i486) || defined(i386) || defined(__ia64__) || defined(__x86_64__) -// MINIZ_X86_OR_X64_CPU is only used to help set the below macros. -#define MINIZ_X86_OR_X64_CPU 1 -#endif - -#if (__BYTE_ORDER__==__ORDER_LITTLE_ENDIAN__) || MINIZ_X86_OR_X64_CPU -// Set MINIZ_LITTLE_ENDIAN to 1 if the processor is little endian. -#define MINIZ_LITTLE_ENDIAN 1 -#endif - -#if MINIZ_X86_OR_X64_CPU -// Set MINIZ_USE_UNALIGNED_LOADS_AND_STORES to 1 on CPU's that permit efficient integer loads and stores from unaligned addresses. -#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 1 -#endif - -// Using unaligned loads and stores causes errors when using UBSan. Jam it off. -#if defined(__has_feature) -#if __has_feature(undefined_behavior_sanitizer) -#undef MINIZ_USE_UNALIGNED_LOADS_AND_STORES -#define MINIZ_USE_UNALIGNED_LOADS_AND_STORES 0 -#endif -#endif - -#if defined(_M_X64) || defined(_WIN64) || defined(__MINGW64__) || defined(_LP64) || defined(__LP64__) || defined(__ia64__) || defined(__x86_64__) -// Set MINIZ_HAS_64BIT_REGISTERS to 1 if operations on 64-bit integers are reasonably fast (and don't involve compiler generated calls to helper functions). -#define MINIZ_HAS_64BIT_REGISTERS 1 -#endif - -namespace buminiz { - -// ------------------- zlib-style API Definitions. - -// For more compatibility with zlib, miniz.c uses unsigned long for some parameters/struct members. Beware: mz_ulong can be either 32 or 64-bits! -typedef unsigned long mz_ulong; - -// mz_free() internally uses the MZ_FREE() macro (which by default calls free() unless you've modified the MZ_MALLOC macro) to release a block allocated from the heap. -void mz_free(void *p); - -#define MZ_ADLER32_INIT (1) -// mz_adler32() returns the initial adler-32 value to use when called with ptr==NULL. -mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len); - -#define MZ_CRC32_INIT (0) -// mz_crc32() returns the initial CRC-32 value to use when called with ptr==NULL. -mz_ulong mz_crc32(mz_ulong crc, const unsigned char *ptr, size_t buf_len); - -// Compression strategies. -enum { MZ_DEFAULT_STRATEGY = 0, MZ_FILTERED = 1, MZ_HUFFMAN_ONLY = 2, MZ_RLE = 3, MZ_FIXED = 4 }; - -// Method -#define MZ_DEFLATED 8 - -#ifndef MINIZ_NO_ZLIB_APIS - -// Heap allocation callbacks. -// Note that mz_alloc_func parameter types purpsosely differ from zlib's: items/size is size_t, not unsigned long. -typedef void *(*mz_alloc_func)(void *opaque, size_t items, size_t size); -typedef void (*mz_free_func)(void *opaque, void *address); -typedef void *(*mz_realloc_func)(void *opaque, void *address, size_t items, size_t size); - -#define MZ_VERSION "9.1.15" -#define MZ_VERNUM 0x91F0 -#define MZ_VER_MAJOR 9 -#define MZ_VER_MINOR 1 -#define MZ_VER_REVISION 15 -#define MZ_VER_SUBREVISION 0 - -// Flush values. For typical usage you only need MZ_NO_FLUSH and MZ_FINISH. The other values are for advanced use (refer to the zlib docs). -enum { MZ_NO_FLUSH = 0, MZ_PARTIAL_FLUSH = 1, MZ_SYNC_FLUSH = 2, MZ_FULL_FLUSH = 3, MZ_FINISH = 4, MZ_BLOCK = 5 }; - -// Return status codes. MZ_PARAM_ERROR is non-standard. -enum { MZ_OK = 0, MZ_STREAM_END = 1, MZ_NEED_DICT = 2, MZ_ERRNO = -1, MZ_STREAM_ERROR = -2, MZ_DATA_ERROR = -3, MZ_MEM_ERROR = -4, MZ_BUF_ERROR = -5, MZ_VERSION_ERROR = -6, MZ_PARAM_ERROR = -10000 }; - -// Compression levels: 0-9 are the standard zlib-style levels, 10 is best possible compression (not zlib compatible, and may be very slow), MZ_DEFAULT_COMPRESSION=MZ_DEFAULT_LEVEL. -enum { MZ_NO_COMPRESSION = 0, MZ_BEST_SPEED = 1, MZ_BEST_COMPRESSION = 9, MZ_UBER_COMPRESSION = 10, MZ_DEFAULT_LEVEL = 6, MZ_DEFAULT_COMPRESSION = -1 }; - -// Window bits -#define MZ_DEFAULT_WINDOW_BITS 15 - -struct mz_internal_state; - -// Compression/decompression stream struct. -typedef struct mz_stream_s -{ - const unsigned char *next_in; // pointer to next byte to read - unsigned int avail_in; // number of bytes available at next_in - mz_ulong total_in; // total number of bytes consumed so far - - unsigned char *next_out; // pointer to next byte to write - unsigned int avail_out; // number of bytes that can be written to next_out - mz_ulong total_out; // total number of bytes produced so far - - char *msg; // error msg (unused) - struct mz_internal_state *state; // internal state, allocated by zalloc/zfree - - mz_alloc_func zalloc; // optional heap allocation function (defaults to malloc) - mz_free_func zfree; // optional heap free function (defaults to free) - void *opaque; // heap alloc function user pointer - - int data_type; // data_type (unused) - mz_ulong adler; // adler32 of the source or uncompressed data - mz_ulong reserved; // not used -} mz_stream; - -typedef mz_stream *mz_streamp; - -// Returns the version string of miniz.c. -const char *mz_version(void); - -// mz_deflateInit() initializes a compressor with default options: -// Parameters: -// pStream must point to an initialized mz_stream struct. -// level must be between [MZ_NO_COMPRESSION, MZ_BEST_COMPRESSION]. -// level 1 enables a specially optimized compression function that's been optimized purely for performance, not ratio. -// (This special func. is currently only enabled when MINIZ_USE_UNALIGNED_LOADS_AND_STORES and MINIZ_LITTLE_ENDIAN are defined.) -// Return values: -// MZ_OK on success. -// MZ_STREAM_ERROR if the stream is bogus. -// MZ_PARAM_ERROR if the input parameters are bogus. -// MZ_MEM_ERROR on out of memory. -int mz_deflateInit(mz_streamp pStream, int level); - -// mz_deflateInit2() is like mz_deflate(), except with more control: -// Additional parameters: -// method must be MZ_DEFLATED -// window_bits must be MZ_DEFAULT_WINDOW_BITS (to wrap the deflate stream with zlib header/adler-32 footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate/no header or footer) -// mem_level must be between [1, 9] (it's checked but ignored by miniz.c) -int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy); - -// Quickly resets a compressor without having to reallocate anything. Same as calling mz_deflateEnd() followed by mz_deflateInit()/mz_deflateInit2(). -int mz_deflateReset(mz_streamp pStream); - -// mz_deflate() compresses the input to output, consuming as much of the input and producing as much output as possible. -// Parameters: -// pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out members. -// flush may be MZ_NO_FLUSH, MZ_PARTIAL_FLUSH/MZ_SYNC_FLUSH, MZ_FULL_FLUSH, or MZ_FINISH. -// Return values: -// MZ_OK on success (when flushing, or if more input is needed but not available, and/or there's more output to be written but the output buffer is full). -// MZ_STREAM_END if all input has been consumed and all output bytes have been written. Don't call mz_deflate() on the stream anymore. -// MZ_STREAM_ERROR if the stream is bogus. -// MZ_PARAM_ERROR if one of the parameters is invalid. -// MZ_BUF_ERROR if no forward progress is possible because the input and/or output buffers are empty. (Fill up the input buffer or free up some output space and try again.) -int mz_deflate(mz_streamp pStream, int flush); - -// mz_deflateEnd() deinitializes a compressor: -// Return values: -// MZ_OK on success. -// MZ_STREAM_ERROR if the stream is bogus. -int mz_deflateEnd(mz_streamp pStream); - -// mz_deflateBound() returns a (very) conservative upper bound on the amount of data that could be generated by deflate(), assuming flush is set to only MZ_NO_FLUSH or MZ_FINISH. -mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len); - -// Single-call compression functions mz_compress() and mz_compress2(): -// Returns MZ_OK on success, or one of the error codes from mz_deflate() on failure. -int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); -int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level); - -// mz_compressBound() returns a (very) conservative upper bound on the amount of data that could be generated by calling mz_compress(). -mz_ulong mz_compressBound(mz_ulong source_len); - -// Initializes a decompressor. -int mz_inflateInit(mz_streamp pStream); - -// mz_inflateInit2() is like mz_inflateInit() with an additional option that controls the window size and whether or not the stream has been wrapped with a zlib header/footer: -// window_bits must be MZ_DEFAULT_WINDOW_BITS (to parse zlib header/footer) or -MZ_DEFAULT_WINDOW_BITS (raw deflate). -int mz_inflateInit2(mz_streamp pStream, int window_bits); - -// Decompresses the input stream to the output, consuming only as much of the input as needed, and writing as much to the output as possible. -// Parameters: -// pStream is the stream to read from and write to. You must initialize/update the next_in, avail_in, next_out, and avail_out members. -// flush may be MZ_NO_FLUSH, MZ_SYNC_FLUSH, or MZ_FINISH. -// On the first call, if flush is MZ_FINISH it's assumed the input and output buffers are both sized large enough to decompress the entire stream in a single call (this is slightly faster). -// MZ_FINISH implies that there are no more source bytes available beside what's already in the input buffer, and that the output buffer is large enough to hold the rest of the decompressed data. -// Return values: -// MZ_OK on success. Either more input is needed but not available, and/or there's more output to be written but the output buffer is full. -// MZ_STREAM_END if all needed input has been consumed and all output bytes have been written. For zlib streams, the adler-32 of the decompressed data has also been verified. -// MZ_STREAM_ERROR if the stream is bogus. -// MZ_DATA_ERROR if the deflate stream is invalid. -// MZ_PARAM_ERROR if one of the parameters is invalid. -// MZ_BUF_ERROR if no forward progress is possible because the input buffer is empty but the inflater needs more input to continue, or if the output buffer is not large enough. Call mz_inflate() again -// with more input data, or with more room in the output buffer (except when using single call decompression, described above). -int mz_inflate(mz_streamp pStream, int flush); -int mz_inflate2(mz_streamp pStream, int flush, int adler32_checking); - -// Deinitializes a decompressor. -int mz_inflateEnd(mz_streamp pStream); - -// Single-call decompression. -// Returns MZ_OK on success, or one of the error codes from mz_inflate() on failure. -int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len); - -// Returns a string description of the specified error code, or NULL if the error code is invalid. -const char *mz_error(int err); - -// Redefine zlib-compatible names to miniz equivalents, so miniz.c can be used as a drop-in replacement for the subset of zlib that miniz.c supports. -// Define MINIZ_NO_ZLIB_COMPATIBLE_NAMES to disable zlib-compatibility if you use zlib in the same project. -#ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES - typedef unsigned char Byte; - typedef unsigned int uInt; - typedef mz_ulong uLong; - typedef Byte Bytef; - typedef uInt uIntf; - typedef char charf; - typedef int intf; - typedef void *voidpf; - typedef uLong uLongf; - typedef void *voidp; - typedef void *const voidpc; - #define Z_NULL 0 - #define Z_NO_FLUSH MZ_NO_FLUSH - #define Z_PARTIAL_FLUSH MZ_PARTIAL_FLUSH - #define Z_SYNC_FLUSH MZ_SYNC_FLUSH - #define Z_FULL_FLUSH MZ_FULL_FLUSH - #define Z_FINISH MZ_FINISH - #define Z_BLOCK MZ_BLOCK - #define Z_OK MZ_OK - #define Z_STREAM_END MZ_STREAM_END - #define Z_NEED_DICT MZ_NEED_DICT - #define Z_ERRNO MZ_ERRNO - #define Z_STREAM_ERROR MZ_STREAM_ERROR - #define Z_DATA_ERROR MZ_DATA_ERROR - #define Z_MEM_ERROR MZ_MEM_ERROR - #define Z_BUF_ERROR MZ_BUF_ERROR - #define Z_VERSION_ERROR MZ_VERSION_ERROR - #define Z_PARAM_ERROR MZ_PARAM_ERROR - #define Z_NO_COMPRESSION MZ_NO_COMPRESSION - #define Z_BEST_SPEED MZ_BEST_SPEED - #define Z_BEST_COMPRESSION MZ_BEST_COMPRESSION - #define Z_DEFAULT_COMPRESSION MZ_DEFAULT_COMPRESSION - #define Z_DEFAULT_STRATEGY MZ_DEFAULT_STRATEGY - #define Z_FILTERED MZ_FILTERED - #define Z_HUFFMAN_ONLY MZ_HUFFMAN_ONLY - #define Z_RLE MZ_RLE - #define Z_FIXED MZ_FIXED - #define Z_DEFLATED MZ_DEFLATED - #define Z_DEFAULT_WINDOW_BITS MZ_DEFAULT_WINDOW_BITS - #define alloc_func mz_alloc_func - #define free_func mz_free_func - #define internal_state mz_internal_state - #define z_stream mz_stream - #define deflateInit mz_deflateInit - #define deflateInit2 mz_deflateInit2 - #define deflateReset mz_deflateReset - #define deflate mz_deflate - #define deflateEnd mz_deflateEnd - #define deflateBound mz_deflateBound - #define compress mz_compress - #define compress2 mz_compress2 - #define compressBound mz_compressBound - #define inflateInit mz_inflateInit - #define inflateInit2 mz_inflateInit2 - #define inflate mz_inflate - #define inflateEnd mz_inflateEnd - #define uncompress mz_uncompress - #define crc32 mz_crc32 - #define adler32 mz_adler32 - #define MAX_WBITS 15 - #define MAX_MEM_LEVEL 9 - #define zError mz_error - #define ZLIB_VERSION MZ_VERSION - #define ZLIB_VERNUM MZ_VERNUM - #define ZLIB_VER_MAJOR MZ_VER_MAJOR - #define ZLIB_VER_MINOR MZ_VER_MINOR - #define ZLIB_VER_REVISION MZ_VER_REVISION - #define ZLIB_VER_SUBREVISION MZ_VER_SUBREVISION - #define zlibVersion mz_version - #define zlib_version mz_version() -#endif // #ifndef MINIZ_NO_ZLIB_COMPATIBLE_NAMES - -#endif // MINIZ_NO_ZLIB_APIS - -// ------------------- Types and macros - -typedef unsigned char mz_uint8; -typedef signed short mz_int16; -typedef unsigned short mz_uint16; -typedef unsigned int mz_uint32; -typedef unsigned int mz_uint; -typedef long long mz_int64; -typedef unsigned long long mz_uint64; -typedef int mz_bool; - -#define MZ_FALSE (0) -#define MZ_TRUE (1) - -// An attempt to work around MSVC's spammy "warning C4127: conditional expression is constant" message. -#ifdef _MSC_VER - #define MZ_MACRO_END while (0, 0) -#else - #define MZ_MACRO_END while (0) -#endif - -// ------------------- Low-level Decompression API Definitions - -// Decompression flags used by tinfl_decompress(). -// TINFL_FLAG_PARSE_ZLIB_HEADER: If set, the input has a valid zlib header and ends with an adler32 checksum (it's a valid zlib stream). Otherwise, the input is a raw deflate stream. -// TINFL_FLAG_HAS_MORE_INPUT: If set, there are more input bytes available beyond the end of the supplied input buffer. If clear, the input buffer contains all remaining input. -// TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF: If set, the output buffer is large enough to hold the entire decompressed stream. If clear, the output buffer is at least the size of the dictionary (typically 32KB). -// TINFL_FLAG_COMPUTE_ADLER32: Force adler-32 checksum computation of the decompressed bytes. -enum -{ - TINFL_FLAG_PARSE_ZLIB_HEADER = 1, - TINFL_FLAG_HAS_MORE_INPUT = 2, - TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF = 4, - TINFL_FLAG_COMPUTE_ADLER32 = 8 -}; - -// High level decompression functions: -// tinfl_decompress_mem_to_heap() decompresses a block in memory to a heap block allocated via malloc(). -// On entry: -// pSrc_buf, src_buf_len: Pointer and size of the Deflate or zlib source data to decompress. -// On return: -// Function returns a pointer to the decompressed data, or NULL on failure. -// *pOut_len will be set to the decompressed data's size, which could be larger than src_buf_len on uncompressible data. -// The caller must call mz_free() on the returned block when it's no longer needed. -void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags); - -// tinfl_decompress_mem_to_mem() decompresses a block in memory to another block in memory. -// Returns TINFL_DECOMPRESS_MEM_TO_MEM_FAILED on failure, or the number of bytes written on success. -#define TINFL_DECOMPRESS_MEM_TO_MEM_FAILED ((size_t)(-1)) -size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags); - -// tinfl_decompress_mem_to_callback() decompresses a block in memory to an internal 32KB buffer, and a user provided callback function will be called to flush the buffer. -// Returns 1 on success or 0 on failure. -typedef int (*tinfl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser); -int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags); - -struct tinfl_decompressor_tag; typedef struct tinfl_decompressor_tag tinfl_decompressor; - -// Max size of LZ dictionary. -#define TINFL_LZ_DICT_SIZE 32768 - -// Return status. -typedef enum -{ - TINFL_STATUS_BAD_PARAM = -3, - TINFL_STATUS_ADLER32_MISMATCH = -2, - TINFL_STATUS_FAILED = -1, - TINFL_STATUS_DONE = 0, - TINFL_STATUS_NEEDS_MORE_INPUT = 1, - TINFL_STATUS_HAS_MORE_OUTPUT = 2 -} tinfl_status; - -// Initializes the decompressor to its initial state. -#define tinfl_init(r) do { (r)->m_state = 0; } MZ_MACRO_END -#define tinfl_get_adler32(r) (r)->m_check_adler32 - -// Main low-level decompressor coroutine function. This is the only function actually needed for decompression. All the other functions are just high-level helpers for improved usability. -// This is a universal API, i.e. it can be used as a building block to build any desired higher level decompression API. In the limit case, it can be called once per every byte input or output. -tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags); - -// Internal/private bits follow. -enum -{ - TINFL_MAX_HUFF_TABLES = 3, TINFL_MAX_HUFF_SYMBOLS_0 = 288, TINFL_MAX_HUFF_SYMBOLS_1 = 32, TINFL_MAX_HUFF_SYMBOLS_2 = 19, - TINFL_FAST_LOOKUP_BITS = 10, TINFL_FAST_LOOKUP_SIZE = 1 << TINFL_FAST_LOOKUP_BITS -}; - -typedef struct -{ - mz_uint8 m_code_size[TINFL_MAX_HUFF_SYMBOLS_0]; - mz_int16 m_look_up[TINFL_FAST_LOOKUP_SIZE], m_tree[TINFL_MAX_HUFF_SYMBOLS_0 * 2]; -} tinfl_huff_table; - -#if MINIZ_HAS_64BIT_REGISTERS - #define TINFL_USE_64BIT_BITBUF 1 -#endif - -#if TINFL_USE_64BIT_BITBUF - typedef mz_uint64 tinfl_bit_buf_t; - #define TINFL_BITBUF_SIZE (64) -#else - typedef mz_uint32 tinfl_bit_buf_t; - #define TINFL_BITBUF_SIZE (32) -#endif - -struct tinfl_decompressor_tag -{ - mz_uint32 m_state, m_num_bits, m_zhdr0, m_zhdr1, m_z_adler32, m_final, m_type, m_check_adler32, m_dist, m_counter, m_num_extra, m_table_sizes[TINFL_MAX_HUFF_TABLES]; - tinfl_bit_buf_t m_bit_buf; - size_t m_dist_from_out_buf_start; - tinfl_huff_table m_tables[TINFL_MAX_HUFF_TABLES]; - mz_uint8 m_raw_header[4], m_len_codes[TINFL_MAX_HUFF_SYMBOLS_0 + TINFL_MAX_HUFF_SYMBOLS_1 + 137]; -}; - -// ------------------- Low-level Compression API Definitions - -// Set TDEFL_LESS_MEMORY to 1 to use less memory (compression will be slightly slower, and raw/dynamic blocks will be output more frequently). -#define TDEFL_LESS_MEMORY 0 - -// tdefl_init() compression flags logically OR'd together (low 12 bits contain the max. number of probes per dictionary search): -// TDEFL_DEFAULT_MAX_PROBES: The compressor defaults to 128 dictionary probes per dictionary search. 0=Huffman only, 1=Huffman+LZ (fastest/crap compression), 4095=Huffman+LZ (slowest/best compression). -enum -{ - TDEFL_HUFFMAN_ONLY = 0, TDEFL_DEFAULT_MAX_PROBES = 128, TDEFL_MAX_PROBES_MASK = 0xFFF -}; - -// TDEFL_WRITE_ZLIB_HEADER: If set, the compressor outputs a zlib header before the deflate data, and the Adler-32 of the source data at the end. Otherwise, you'll get raw deflate data. -// TDEFL_COMPUTE_ADLER32: Always compute the adler-32 of the input data (even when not writing zlib headers). -// TDEFL_GREEDY_PARSING_FLAG: Set to use faster greedy parsing, instead of more efficient lazy parsing. -// TDEFL_NONDETERMINISTIC_PARSING_FLAG: Enable to decrease the compressor's initialization time to the minimum, but the output may vary from run to run given the same input (depending on the contents of memory). -// TDEFL_RLE_MATCHES: Only look for RLE matches (matches with a distance of 1) -// TDEFL_FILTER_MATCHES: Discards matches <= 5 chars if enabled. -// TDEFL_FORCE_ALL_STATIC_BLOCKS: Disable usage of optimized Huffman tables. -// TDEFL_FORCE_ALL_RAW_BLOCKS: Only use raw (uncompressed) deflate blocks. -// The low 12 bits are reserved to control the max # of hash probes per dictionary lookup (see TDEFL_MAX_PROBES_MASK). -enum -{ - TDEFL_WRITE_ZLIB_HEADER = 0x01000, - TDEFL_COMPUTE_ADLER32 = 0x02000, - TDEFL_GREEDY_PARSING_FLAG = 0x04000, - TDEFL_NONDETERMINISTIC_PARSING_FLAG = 0x08000, - TDEFL_RLE_MATCHES = 0x10000, - TDEFL_FILTER_MATCHES = 0x20000, - TDEFL_FORCE_ALL_STATIC_BLOCKS = 0x40000, - TDEFL_FORCE_ALL_RAW_BLOCKS = 0x80000 -}; - -// High level compression functions: -// tdefl_compress_mem_to_heap() compresses a block in memory to a heap block allocated via malloc(). -// On entry: -// pSrc_buf, src_buf_len: Pointer and size of source block to compress. -// flags: The max match finder probes (default is 128) logically OR'd against the above flags. Higher probes are slower but improve compression. -// On return: -// Function returns a pointer to the compressed data, or NULL on failure. -// *pOut_len will be set to the compressed data's size, which could be larger than src_buf_len on uncompressible data. -// The caller must free() the returned block when it's no longer needed. -void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags); - -// tdefl_compress_mem_to_mem() compresses a block in memory to another block in memory. -// Returns 0 on failure. -size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags); - -// Compresses an image to a compressed PNG file in memory. -// On entry: -// pImage, w, h, and num_chans describe the image to compress. num_chans may be 1, 2, 3, or 4. -// The image pitch in bytes per scanline will be w*num_chans. The leftmost pixel on the top scanline is stored first in memory. -// level may range from [0,10], use MZ_NO_COMPRESSION, MZ_BEST_SPEED, MZ_BEST_COMPRESSION, etc. or a decent default is MZ_DEFAULT_LEVEL -// If flip is true, the image will be flipped on the Y axis (useful for OpenGL apps). -// On return: -// Function returns a pointer to the compressed data, or NULL on failure. -// *pLen_out will be set to the size of the PNG image file. -// The caller must mz_free() the returned heap block (which will typically be larger than *pLen_out) when it's no longer needed. -void *tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, int h, int num_chans, size_t *pLen_out, mz_uint level, mz_bool flip); -void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out); - -// Output stream interface. The compressor uses this interface to write compressed data. It'll typically be called TDEFL_OUT_BUF_SIZE at a time. -typedef mz_bool (*tdefl_put_buf_func_ptr)(const void* pBuf, int len, void *pUser); - -// tdefl_compress_mem_to_output() compresses a block to an output stream. The above helpers use this function internally. -mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags); - -enum { TDEFL_MAX_HUFF_TABLES = 3, TDEFL_MAX_HUFF_SYMBOLS_0 = 288, TDEFL_MAX_HUFF_SYMBOLS_1 = 32, TDEFL_MAX_HUFF_SYMBOLS_2 = 19, TDEFL_LZ_DICT_SIZE = 32768, TDEFL_LZ_DICT_SIZE_MASK = TDEFL_LZ_DICT_SIZE - 1, TDEFL_MIN_MATCH_LEN = 3, TDEFL_MAX_MATCH_LEN = 258 }; - -// TDEFL_OUT_BUF_SIZE MUST be large enough to hold a single entire compressed output block (using static/fixed Huffman codes). -#if TDEFL_LESS_MEMORY -enum { TDEFL_LZ_CODE_BUF_SIZE = 24 * 1024, TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13 ) / 10, TDEFL_MAX_HUFF_SYMBOLS = 288, TDEFL_LZ_HASH_BITS = 12, TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS }; -#else -enum { TDEFL_LZ_CODE_BUF_SIZE = 64 * 1024, TDEFL_OUT_BUF_SIZE = (TDEFL_LZ_CODE_BUF_SIZE * 13 ) / 10, TDEFL_MAX_HUFF_SYMBOLS = 288, TDEFL_LZ_HASH_BITS = 15, TDEFL_LEVEL1_HASH_SIZE_MASK = 4095, TDEFL_LZ_HASH_SHIFT = (TDEFL_LZ_HASH_BITS + 2) / 3, TDEFL_LZ_HASH_SIZE = 1 << TDEFL_LZ_HASH_BITS }; -#endif - -// The low-level tdefl functions below may be used directly if the above helper functions aren't flexible enough. The low-level functions don't make any heap allocations, unlike the above helper functions. -typedef enum -{ - TDEFL_STATUS_BAD_PARAM = -2, - TDEFL_STATUS_PUT_BUF_FAILED = -1, - TDEFL_STATUS_OKAY = 0, - TDEFL_STATUS_DONE = 1, -} tdefl_status; - -// Must map to MZ_NO_FLUSH, MZ_SYNC_FLUSH, etc. enums -typedef enum -{ - TDEFL_NO_FLUSH = 0, - TDEFL_SYNC_FLUSH = 2, - TDEFL_FULL_FLUSH = 3, - TDEFL_FINISH = 4 -} tdefl_flush; - -// tdefl's compression state structure. -typedef struct -{ - tdefl_put_buf_func_ptr m_pPut_buf_func; - void *m_pPut_buf_user; - mz_uint m_flags, m_max_probes[2]; - int m_greedy_parsing; - mz_uint m_adler32, m_lookahead_pos, m_lookahead_size, m_dict_size; - mz_uint8 *m_pLZ_code_buf, *m_pLZ_flags, *m_pOutput_buf, *m_pOutput_buf_end; - mz_uint m_num_flags_left, m_total_lz_bytes, m_lz_code_buf_dict_pos, m_bits_in, m_bit_buffer; - mz_uint m_saved_match_dist, m_saved_match_len, m_saved_lit, m_output_flush_ofs, m_output_flush_remaining, m_finished, m_block_index, m_wants_to_finish; - tdefl_status m_prev_return_status; - const void *m_pIn_buf; - void *m_pOut_buf; - size_t *m_pIn_buf_size, *m_pOut_buf_size; - tdefl_flush m_flush; - const mz_uint8 *m_pSrc; - size_t m_src_buf_left, m_out_buf_ofs; - mz_uint8 m_dict[TDEFL_LZ_DICT_SIZE + TDEFL_MAX_MATCH_LEN - 1]; - mz_uint16 m_huff_count[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; - mz_uint16 m_huff_codes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; - mz_uint8 m_huff_code_sizes[TDEFL_MAX_HUFF_TABLES][TDEFL_MAX_HUFF_SYMBOLS]; - mz_uint8 m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE]; - mz_uint16 m_next[TDEFL_LZ_DICT_SIZE]; - mz_uint16 m_hash[TDEFL_LZ_HASH_SIZE]; - mz_uint8 m_output_buf[TDEFL_OUT_BUF_SIZE]; -} tdefl_compressor; - -// Initializes the compressor. -// There is no corresponding deinit() function because the tdefl API's do not dynamically allocate memory. -// pBut_buf_func: If NULL, output data will be supplied to the specified callback. In this case, the user should call the tdefl_compress_buffer() API for compression. -// If pBut_buf_func is NULL the user should always call the tdefl_compress() API. -// flags: See the above enums (TDEFL_HUFFMAN_ONLY, TDEFL_WRITE_ZLIB_HEADER, etc.) -tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags); - -// Compresses a block of data, consuming as much of the specified input buffer as possible, and writing as much compressed data to the specified output buffer as possible. -tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, size_t *pIn_buf_size, void *pOut_buf, size_t *pOut_buf_size, tdefl_flush flush); - -// tdefl_compress_buffer() is only usable when the tdefl_init() is called with a non-NULL tdefl_put_buf_func_ptr. -// tdefl_compress_buffer() always consumes the entire input buffer. -tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush); - -tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d); -mz_uint32 tdefl_get_adler32(tdefl_compressor *d); - -// Can't use tdefl_create_comp_flags_from_zip_params if MINIZ_NO_ZLIB_APIS isn't defined, because it uses some of its macros. -#ifndef MINIZ_NO_ZLIB_APIS -// Create tdefl_compress() flags given zlib-style compression parameters. -// level may range from [0,10] (where 10 is absolute max compression, but may be much slower on some files) -// window_bits may be -15 (raw deflate) or 15 (zlib) -// strategy may be either MZ_DEFAULT_STRATEGY, MZ_FILTERED, MZ_HUFFMAN_ONLY, MZ_RLE, or MZ_FIXED -mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy); -#endif // #ifndef MINIZ_NO_ZLIB_APIS - -} // namespace buminiz - -#endif // MINIZ_HEADER_INCLUDED - -// ------------------- End of Header: Implementation follows. (If you only want the header, define MINIZ_HEADER_FILE_ONLY.) - -#ifndef MINIZ_HEADER_FILE_ONLY - -#include -#include - -namespace buminiz { - -typedef unsigned char mz_validate_uint16[sizeof(mz_uint16)==2 ? 1 : -1]; -typedef unsigned char mz_validate_uint32[sizeof(mz_uint32)==4 ? 1 : -1]; -typedef unsigned char mz_validate_uint64[sizeof(mz_uint64)==8 ? 1 : -1]; - -#define MZ_ASSERT(x) assert(x) - -#ifdef MINIZ_NO_MALLOC - #define MZ_MALLOC(x) NULL - #define MZ_FREE(x) (void)x, ((void)0) - #define MZ_REALLOC(p, x) NULL -#else - #define MZ_MALLOC(x) malloc(x) - #define MZ_FREE(x) free(x) - #define MZ_REALLOC(p, x) realloc(p, x) -#endif - -#define MZ_MAX(a,b) (((a)>(b))?(a):(b)) -#define MZ_MIN(a,b) (((a)<(b))?(a):(b)) -#define MZ_CLEAR_OBJ(obj) memset(&(obj), 0, sizeof(obj)) - -#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN - #define MZ_READ_LE16(p) *((const mz_uint16 *)(p)) - #define MZ_READ_LE32(p) *((const mz_uint32 *)(p)) -#else - #define MZ_READ_LE16(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U)) - #define MZ_READ_LE32(p) ((mz_uint32)(((const mz_uint8 *)(p))[0]) | ((mz_uint32)(((const mz_uint8 *)(p))[1]) << 8U) | ((mz_uint32)(((const mz_uint8 *)(p))[2]) << 16U) | ((mz_uint32)(((const mz_uint8 *)(p))[3]) << 24U)) -#endif - -#ifdef _MSC_VER - #define MZ_FORCEINLINE __forceinline -#elif defined(__GNUC__) - #define MZ_FORCEINLINE inline __attribute__((__always_inline__)) -#else - #define MZ_FORCEINLINE inline -#endif - -// ------------------- zlib-style API's - -mz_ulong mz_adler32(mz_ulong adler, const unsigned char *ptr, size_t buf_len) -{ - mz_uint32 i, s1 = (mz_uint32)(adler & 0xffff), s2 = (mz_uint32)(adler >> 16); size_t block_len = buf_len % 5552; - if (!ptr) return MZ_ADLER32_INIT; - while (buf_len) { - for (i = 0; i + 7 < block_len; i += 8, ptr += 8) { - s1 += ptr[0], s2 += s1; s1 += ptr[1], s2 += s1; s1 += ptr[2], s2 += s1; s1 += ptr[3], s2 += s1; - s1 += ptr[4], s2 += s1; s1 += ptr[5], s2 += s1; s1 += ptr[6], s2 += s1; s1 += ptr[7], s2 += s1; - } - for ( ; i < block_len; ++i) s1 += *ptr++, s2 += s1; - s1 %= 65521U, s2 %= 65521U; buf_len -= block_len; block_len = 5552; - } - return (s2 << 16) + s1; -} - -// Karl Malbrain's compact CRC-32. See "A compact CCITT crc16 and crc32 C implementation that balances processor cache usage against speed": http://www.geocities.com/malbrain/ -mz_ulong mz_crc32(mz_ulong crc, const mz_uint8 *ptr, size_t buf_len) -{ - static const mz_uint32 s_crc32[16] = { 0, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, - 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c }; - mz_uint32 crcu32 = (mz_uint32)crc; - if (!ptr) return MZ_CRC32_INIT; - crcu32 = ~crcu32; while (buf_len--) { mz_uint8 b = *ptr++; crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b & 0xF)]; crcu32 = (crcu32 >> 4) ^ s_crc32[(crcu32 & 0xF) ^ (b >> 4)]; } - return ~crcu32; -} - -void mz_free(void *p) -{ - MZ_FREE(p); -} - -#ifndef MINIZ_NO_ZLIB_APIS - -static void *def_alloc_func(void *opaque, size_t items, size_t size) { (void)opaque, (void)items, (void)size; return MZ_MALLOC(items * size); } -static void def_free_func(void *opaque, void *address) { (void)opaque, (void)address; MZ_FREE(address); } -//static void *def_realloc_func(void *opaque, void *address, size_t items, size_t size) { (void)opaque, (void)address, (void)items, (void)size; return MZ_REALLOC(address, items * size); } - -const char *mz_version(void) -{ - return MZ_VERSION; -} - -int mz_deflateInit(mz_streamp pStream, int level) -{ - return mz_deflateInit2(pStream, level, MZ_DEFLATED, MZ_DEFAULT_WINDOW_BITS, 9, MZ_DEFAULT_STRATEGY); -} - -int mz_deflateInit2(mz_streamp pStream, int level, int method, int window_bits, int mem_level, int strategy) -{ - tdefl_compressor *pComp; - mz_uint comp_flags = TDEFL_COMPUTE_ADLER32 | tdefl_create_comp_flags_from_zip_params(level, window_bits, strategy); - - if (!pStream) return MZ_STREAM_ERROR; - if ((method != MZ_DEFLATED) || ((mem_level < 1) || (mem_level > 9)) || ((window_bits != MZ_DEFAULT_WINDOW_BITS) && (-window_bits != MZ_DEFAULT_WINDOW_BITS))) return MZ_PARAM_ERROR; - - pStream->data_type = 0; - pStream->adler = MZ_ADLER32_INIT; - pStream->msg = NULL; - pStream->reserved = 0; - pStream->total_in = 0; - pStream->total_out = 0; - if (!pStream->zalloc) pStream->zalloc = def_alloc_func; - if (!pStream->zfree) pStream->zfree = def_free_func; - - pComp = (tdefl_compressor *)pStream->zalloc(pStream->opaque, 1, sizeof(tdefl_compressor)); - if (!pComp) - return MZ_MEM_ERROR; - - pStream->state = (struct mz_internal_state *)pComp; - - if (tdefl_init(pComp, NULL, NULL, comp_flags) != TDEFL_STATUS_OKAY) - { - mz_deflateEnd(pStream); - return MZ_PARAM_ERROR; - } - - return MZ_OK; -} - -int mz_deflateReset(mz_streamp pStream) -{ - if ((!pStream) || (!pStream->state) || (!pStream->zalloc) || (!pStream->zfree)) return MZ_STREAM_ERROR; - pStream->total_in = pStream->total_out = 0; - tdefl_init((tdefl_compressor*)pStream->state, NULL, NULL, ((tdefl_compressor*)pStream->state)->m_flags); - return MZ_OK; -} - -int mz_deflate(mz_streamp pStream, int flush) -{ - size_t in_bytes, out_bytes; - mz_ulong orig_total_in, orig_total_out; - int mz_status = MZ_OK; - - if ((!pStream) || (!pStream->state) || (flush < 0) || (flush > MZ_FINISH) || (!pStream->next_out)) return MZ_STREAM_ERROR; - if (!pStream->avail_out) return MZ_BUF_ERROR; - - if (flush == MZ_PARTIAL_FLUSH) flush = MZ_SYNC_FLUSH; - - if (((tdefl_compressor*)pStream->state)->m_prev_return_status == TDEFL_STATUS_DONE) - return (flush == MZ_FINISH) ? MZ_STREAM_END : MZ_BUF_ERROR; - - orig_total_in = pStream->total_in; orig_total_out = pStream->total_out; - for ( ; ; ) - { - tdefl_status defl_status; - in_bytes = pStream->avail_in; out_bytes = pStream->avail_out; - - defl_status = tdefl_compress((tdefl_compressor*)pStream->state, pStream->next_in, &in_bytes, pStream->next_out, &out_bytes, (tdefl_flush)flush); - pStream->next_in += (mz_uint)in_bytes; pStream->avail_in -= (mz_uint)in_bytes; - pStream->total_in += (mz_uint)in_bytes; pStream->adler = tdefl_get_adler32((tdefl_compressor*)pStream->state); - - pStream->next_out += (mz_uint)out_bytes; pStream->avail_out -= (mz_uint)out_bytes; - pStream->total_out += (mz_uint)out_bytes; - - if (defl_status < 0) - { - mz_status = MZ_STREAM_ERROR; - break; - } - else if (defl_status == TDEFL_STATUS_DONE) - { - mz_status = MZ_STREAM_END; - break; - } - else if (!pStream->avail_out) - break; - else if ((!pStream->avail_in) && (flush != MZ_FINISH)) - { - if ((flush) || (pStream->total_in != orig_total_in) || (pStream->total_out != orig_total_out)) - break; - return MZ_BUF_ERROR; // Can't make forward progress without some input. - } - } - return mz_status; -} - -int mz_deflateEnd(mz_streamp pStream) -{ - if (!pStream) return MZ_STREAM_ERROR; - if (pStream->state) - { - pStream->zfree(pStream->opaque, pStream->state); - pStream->state = NULL; - } - return MZ_OK; -} - -mz_ulong mz_deflateBound(mz_streamp pStream, mz_ulong source_len) -{ - (void)pStream; - // This is really over conservative. (And lame, but it's actually pretty tricky to compute a true upper bound given the way tdefl's blocking works.) - mz_uint64 a = 128ULL + (source_len * 110ULL) / 100ULL; - mz_uint64 b = 128ULL + (mz_uint64)source_len + ((source_len / (31 * 1024)) + 1ULL) * 5ULL; - - mz_uint64 t = MZ_MAX(a, b); - if (((mz_ulong)t) != t) - t = (mz_ulong)(-1); - - return (mz_ulong)t; -} - -int mz_compress2(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len, int level) -{ - int status; - mz_stream stream; - memset(&stream, 0, sizeof(stream)); - - // In case mz_ulong is 64-bits (argh I hate longs). - if ((source_len | *pDest_len) > 0xFFFFFFFFU) return MZ_PARAM_ERROR; - - stream.next_in = pSource; - stream.avail_in = (mz_uint32)source_len; - stream.next_out = pDest; - stream.avail_out = (mz_uint32)*pDest_len; - - status = mz_deflateInit(&stream, level); - if (status != MZ_OK) return status; - - status = mz_deflate(&stream, MZ_FINISH); - if (status != MZ_STREAM_END) - { - mz_deflateEnd(&stream); - return (status == MZ_OK) ? MZ_BUF_ERROR : status; - } - - *pDest_len = stream.total_out; - return mz_deflateEnd(&stream); -} - -int mz_compress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len) -{ - return mz_compress2(pDest, pDest_len, pSource, source_len, MZ_DEFAULT_COMPRESSION); -} - -mz_ulong mz_compressBound(mz_ulong source_len) -{ - return mz_deflateBound(NULL, source_len); -} - -typedef struct -{ - tinfl_decompressor m_decomp; - mz_uint m_dict_ofs, m_dict_avail, m_first_call, m_has_flushed; int m_window_bits; - mz_uint8 m_dict[TINFL_LZ_DICT_SIZE]; - tinfl_status m_last_status; -} inflate_state; - -int mz_inflateInit2(mz_streamp pStream, int window_bits) -{ - inflate_state *pDecomp; - if (!pStream) return MZ_STREAM_ERROR; - if ((window_bits != MZ_DEFAULT_WINDOW_BITS) && (-window_bits != MZ_DEFAULT_WINDOW_BITS)) return MZ_PARAM_ERROR; - - pStream->data_type = 0; - pStream->adler = 0; - pStream->msg = NULL; - pStream->total_in = 0; - pStream->total_out = 0; - pStream->reserved = 0; - if (!pStream->zalloc) pStream->zalloc = def_alloc_func; - if (!pStream->zfree) pStream->zfree = def_free_func; - - pDecomp = (inflate_state*)pStream->zalloc(pStream->opaque, 1, sizeof(inflate_state)); - if (!pDecomp) return MZ_MEM_ERROR; - - pStream->state = (struct mz_internal_state *)pDecomp; - - tinfl_init(&pDecomp->m_decomp); - pDecomp->m_dict_ofs = 0; - pDecomp->m_dict_avail = 0; - pDecomp->m_last_status = TINFL_STATUS_NEEDS_MORE_INPUT; - pDecomp->m_first_call = 1; - pDecomp->m_has_flushed = 0; - pDecomp->m_window_bits = window_bits; - - return MZ_OK; -} - -int mz_inflateInit(mz_streamp pStream) -{ - return mz_inflateInit2(pStream, MZ_DEFAULT_WINDOW_BITS); -} - -int mz_inflate2(mz_streamp pStream, int flush, int adler32_checking) -{ - inflate_state* pState; - mz_uint n, first_call, decomp_flags = adler32_checking ? TINFL_FLAG_COMPUTE_ADLER32 : 0; - size_t in_bytes, out_bytes, orig_avail_in; - tinfl_status status; - - if ((!pStream) || (!pStream->state)) return MZ_STREAM_ERROR; - if (flush == MZ_PARTIAL_FLUSH) flush = MZ_SYNC_FLUSH; - if ((flush) && (flush != MZ_SYNC_FLUSH) && (flush != MZ_FINISH)) return MZ_STREAM_ERROR; - - pState = (inflate_state*)pStream->state; - if (pState->m_window_bits > 0) decomp_flags |= TINFL_FLAG_PARSE_ZLIB_HEADER; - orig_avail_in = pStream->avail_in; - - first_call = pState->m_first_call; pState->m_first_call = 0; - if (pState->m_last_status < 0) return MZ_DATA_ERROR; - - if (pState->m_has_flushed && (flush != MZ_FINISH)) return MZ_STREAM_ERROR; - pState->m_has_flushed |= (flush == MZ_FINISH); - - if ((flush == MZ_FINISH) && (first_call)) - { - // MZ_FINISH on the first call implies that the input and output buffers are large enough to hold the entire compressed/decompressed file. - decomp_flags |= TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF; - in_bytes = pStream->avail_in; out_bytes = pStream->avail_out; - status = tinfl_decompress(&pState->m_decomp, pStream->next_in, &in_bytes, pStream->next_out, pStream->next_out, &out_bytes, decomp_flags); - pState->m_last_status = status; - pStream->next_in += (mz_uint)in_bytes; pStream->avail_in -= (mz_uint)in_bytes; pStream->total_in += (mz_uint)in_bytes; - pStream->adler = tinfl_get_adler32(&pState->m_decomp); - pStream->next_out += (mz_uint)out_bytes; pStream->avail_out -= (mz_uint)out_bytes; pStream->total_out += (mz_uint)out_bytes; - - if (status < 0) - return MZ_DATA_ERROR; - else if (status != TINFL_STATUS_DONE) - { - pState->m_last_status = TINFL_STATUS_FAILED; - return MZ_BUF_ERROR; - } - return MZ_STREAM_END; - } - // flush != MZ_FINISH then we must assume there's more input. - if (flush != MZ_FINISH) decomp_flags |= TINFL_FLAG_HAS_MORE_INPUT; - - if (pState->m_dict_avail) - { - n = MZ_MIN(pState->m_dict_avail, pStream->avail_out); - memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n); - pStream->next_out += n; pStream->avail_out -= n; pStream->total_out += n; - pState->m_dict_avail -= n; pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1); - return ((pState->m_last_status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) ? MZ_STREAM_END : MZ_OK; - } - - for ( ; ; ) - { - in_bytes = pStream->avail_in; - out_bytes = TINFL_LZ_DICT_SIZE - pState->m_dict_ofs; - - status = tinfl_decompress(&pState->m_decomp, pStream->next_in, &in_bytes, pState->m_dict, pState->m_dict + pState->m_dict_ofs, &out_bytes, decomp_flags); - pState->m_last_status = status; - - pStream->next_in += (mz_uint)in_bytes; pStream->avail_in -= (mz_uint)in_bytes; - pStream->total_in += (mz_uint)in_bytes; pStream->adler = tinfl_get_adler32(&pState->m_decomp); - - pState->m_dict_avail = (mz_uint)out_bytes; - - n = MZ_MIN(pState->m_dict_avail, pStream->avail_out); - memcpy(pStream->next_out, pState->m_dict + pState->m_dict_ofs, n); - pStream->next_out += n; pStream->avail_out -= n; pStream->total_out += n; - pState->m_dict_avail -= n; pState->m_dict_ofs = (pState->m_dict_ofs + n) & (TINFL_LZ_DICT_SIZE - 1); - - if (status < 0) - return MZ_DATA_ERROR; // Stream is corrupted (there could be some uncompressed data left in the output dictionary - oh well). - else if ((status == TINFL_STATUS_NEEDS_MORE_INPUT) && (!orig_avail_in)) - return MZ_BUF_ERROR; // Signal caller that we can't make forward progress without supplying more input or by setting flush to MZ_FINISH. - else if (flush == MZ_FINISH) - { - // The output buffer MUST be large to hold the remaining uncompressed data when flush==MZ_FINISH. - if (status == TINFL_STATUS_DONE) - return pState->m_dict_avail ? MZ_BUF_ERROR : MZ_STREAM_END; - // status here must be TINFL_STATUS_HAS_MORE_OUTPUT, which means there's at least 1 more byte on the way. If there's no more room left in the output buffer then something is wrong. - else if (!pStream->avail_out) - return MZ_BUF_ERROR; - } - else if ((status == TINFL_STATUS_DONE) || (!pStream->avail_in) || (!pStream->avail_out) || (pState->m_dict_avail)) - break; - } - - return ((status == TINFL_STATUS_DONE) && (!pState->m_dict_avail)) ? MZ_STREAM_END : MZ_OK; -} - -int mz_inflate(mz_streamp pStream, int flush) -{ - return mz_inflate2(pStream, flush, MZ_TRUE); -} - -int mz_inflateEnd(mz_streamp pStream) -{ - if (!pStream) - return MZ_STREAM_ERROR; - if (pStream->state) - { - pStream->zfree(pStream->opaque, pStream->state); - pStream->state = NULL; - } - return MZ_OK; -} - -int mz_uncompress(unsigned char *pDest, mz_ulong *pDest_len, const unsigned char *pSource, mz_ulong source_len) -{ - mz_stream stream; - int status; - memset(&stream, 0, sizeof(stream)); - - // In case mz_ulong is 64-bits (argh I hate longs). - if ((source_len | *pDest_len) > 0xFFFFFFFFU) return MZ_PARAM_ERROR; - - stream.next_in = pSource; - stream.avail_in = (mz_uint32)source_len; - stream.next_out = pDest; - stream.avail_out = (mz_uint32)*pDest_len; - - status = mz_inflateInit(&stream); - if (status != MZ_OK) - return status; - - status = mz_inflate(&stream, MZ_FINISH); - if (status != MZ_STREAM_END) - { - mz_inflateEnd(&stream); - return ((status == MZ_BUF_ERROR) && (!stream.avail_in)) ? MZ_DATA_ERROR : status; - } - *pDest_len = stream.total_out; - - return mz_inflateEnd(&stream); -} - -const char *mz_error(int err) -{ - static struct { int m_err; const char *m_pDesc; } s_error_descs[] = - { - { MZ_OK, "" }, { MZ_STREAM_END, "stream end" }, { MZ_NEED_DICT, "need dictionary" }, { MZ_ERRNO, "file error" }, { MZ_STREAM_ERROR, "stream error" }, - { MZ_DATA_ERROR, "data error" }, { MZ_MEM_ERROR, "out of memory" }, { MZ_BUF_ERROR, "buf error" }, { MZ_VERSION_ERROR, "version error" }, { MZ_PARAM_ERROR, "parameter error" } - }; - mz_uint i; for (i = 0; i < sizeof(s_error_descs) / sizeof(s_error_descs[0]); ++i) if (s_error_descs[i].m_err == err) return s_error_descs[i].m_pDesc; - return NULL; -} - -#endif //MINIZ_NO_ZLIB_APIS - -// ------------------- Low-level Decompression (completely independent from all compression API's) - -#define TINFL_MEMCPY(d, s, l) memcpy(d, s, l) -#define TINFL_MEMSET(p, c, l) memset(p, c, l) - -#define TINFL_CR_BEGIN switch(r->m_state) { case 0: -#define TINFL_CR_RETURN(state_index, result) do { status = result; r->m_state = state_index; goto common_exit; case state_index:; } MZ_MACRO_END -#define TINFL_CR_RETURN_FOREVER(state_index, result) do { for ( ; ; ) { TINFL_CR_RETURN(state_index, result); } } MZ_MACRO_END -#define TINFL_CR_FINISH } - -// TODO: If the caller has indicated that there's no more input, and we attempt to read beyond the input buf, then something is wrong with the input because the inflator never -// reads ahead more than it needs to. Currently TINFL_GET_BYTE() pads the end of the stream with 0's in this scenario. -#define TINFL_GET_BYTE(state_index, c) do { \ - if (pIn_buf_cur >= pIn_buf_end) { \ - for ( ; ; ) { \ - if (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) { \ - TINFL_CR_RETURN(state_index, TINFL_STATUS_NEEDS_MORE_INPUT); \ - if (pIn_buf_cur < pIn_buf_end) { \ - c = *pIn_buf_cur++; \ - break; \ - } \ - } else { \ - c = 0; \ - break; \ - } \ - } \ - } else c = *pIn_buf_cur++; } MZ_MACRO_END - -#define TINFL_NEED_BITS(state_index, n) do { mz_uint c; TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; } while (num_bits < (mz_uint)(n)) -#define TINFL_SKIP_BITS(state_index, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END -#define TINFL_GET_BITS(state_index, b, n) do { if (num_bits < (mz_uint)(n)) { TINFL_NEED_BITS(state_index, n); } b = bit_buf & ((1 << (n)) - 1); bit_buf >>= (n); num_bits -= (n); } MZ_MACRO_END - -// TINFL_HUFF_BITBUF_FILL() is only used rarely, when the number of bytes remaining in the input buffer falls below 2. -// It reads just enough bytes from the input stream that are needed to decode the next Huffman code (and absolutely no more). It works by trying to fully decode a -// Huffman code by using whatever bits are currently present in the bit buffer. If this fails, it reads another byte, and tries again until it succeeds or until the -// bit buffer contains >=15 bits (deflate's max. Huffman code size). -#define TINFL_HUFF_BITBUF_FILL(state_index, pHuff) \ - do { \ - temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]; \ - if (temp >= 0) { \ - code_len = temp >> 9; \ - if ((code_len) && (num_bits >= code_len)) \ - break; \ - } else if (num_bits > TINFL_FAST_LOOKUP_BITS) { \ - code_len = TINFL_FAST_LOOKUP_BITS; \ - do { \ - temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; \ - } while ((temp < 0) && (num_bits >= (code_len + 1))); if (temp >= 0) break; \ - } TINFL_GET_BYTE(state_index, c); bit_buf |= (((tinfl_bit_buf_t)c) << num_bits); num_bits += 8; \ - } while (num_bits < 15); - -// TINFL_HUFF_DECODE() decodes the next Huffman coded symbol. It's more complex than you would initially expect because the zlib API expects the decompressor to never read -// beyond the final byte of the deflate stream. (In other words, when this macro wants to read another byte from the input, it REALLY needs another byte in order to fully -// decode the next Huffman code.) Handling this properly is particularly important on raw deflate (non-zlib) streams, which aren't followed by a byte aligned adler-32. -// The slow path is only executed at the very end of the input buffer. -#define TINFL_HUFF_DECODE(state_index, sym, pHuff) do { \ - int temp; mz_uint code_len, c; \ - if (num_bits < 15) { \ - if ((pIn_buf_end - pIn_buf_cur) < 2) { \ - TINFL_HUFF_BITBUF_FILL(state_index, pHuff); \ - } else { \ - bit_buf |= (((tinfl_bit_buf_t)pIn_buf_cur[0]) << num_bits) | (((tinfl_bit_buf_t)pIn_buf_cur[1]) << (num_bits + 8)); pIn_buf_cur += 2; num_bits += 16; \ - } \ - } \ - if ((temp = (pHuff)->m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) \ - code_len = temp >> 9, temp &= 511; \ - else { \ - code_len = TINFL_FAST_LOOKUP_BITS; do { temp = (pHuff)->m_tree[~temp + ((bit_buf >> code_len++) & 1)]; } while (temp < 0); \ - } sym = temp; bit_buf >>= code_len; num_bits -= code_len; } MZ_MACRO_END - -tinfl_status tinfl_decompress(tinfl_decompressor *r, const mz_uint8 *pIn_buf_next, size_t *pIn_buf_size, mz_uint8 *pOut_buf_start, mz_uint8 *pOut_buf_next, size_t *pOut_buf_size, const mz_uint32 decomp_flags) -{ - static const int s_length_base[31] = { 3,4,5,6,7,8,9,10,11,13, 15,17,19,23,27,31,35,43,51,59, 67,83,99,115,131,163,195,227,258,0,0 }; - static const int s_length_extra[31]= { 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0,0,0 }; - static const int s_dist_base[32] = { 1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193, 257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0}; - static const int s_dist_extra[32] = { 0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13}; - static const mz_uint8 s_length_dezigzag[19] = { 16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15 }; - static const int s_min_table_sizes[3] = { 257, 1, 4 }; - - tinfl_status status = TINFL_STATUS_FAILED; mz_uint32 num_bits, dist, counter, num_extra; tinfl_bit_buf_t bit_buf; - const mz_uint8 *pIn_buf_cur = pIn_buf_next, *const pIn_buf_end = pIn_buf_next + *pIn_buf_size; - mz_uint8 *pOut_buf_cur = pOut_buf_next, *const pOut_buf_end = pOut_buf_next + *pOut_buf_size; - size_t out_buf_size_mask = (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF) ? (size_t)-1 : ((pOut_buf_next - pOut_buf_start) + *pOut_buf_size) - 1, dist_from_out_buf_start; - - // Ensure the output buffer's size is a power of 2, unless the output buffer is large enough to hold the entire output file (in which case it doesn't matter). - if (((out_buf_size_mask + 1) & out_buf_size_mask) || (pOut_buf_next < pOut_buf_start)) { *pIn_buf_size = *pOut_buf_size = 0; return TINFL_STATUS_BAD_PARAM; } - - num_bits = r->m_num_bits; bit_buf = r->m_bit_buf; dist = r->m_dist; counter = r->m_counter; num_extra = r->m_num_extra; dist_from_out_buf_start = r->m_dist_from_out_buf_start; - TINFL_CR_BEGIN - - bit_buf = num_bits = dist = counter = num_extra = r->m_zhdr0 = r->m_zhdr1 = 0; r->m_z_adler32 = r->m_check_adler32 = 1; - if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) - { - TINFL_GET_BYTE(1, r->m_zhdr0); TINFL_GET_BYTE(2, r->m_zhdr1); - counter = (((r->m_zhdr0 * 256 + r->m_zhdr1) % 31 != 0) || (r->m_zhdr1 & 32) || ((r->m_zhdr0 & 15) != 8)); - if (!(decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) counter |= (((1U << (8U + (r->m_zhdr0 >> 4))) > 32768U) || ((out_buf_size_mask + 1) < (size_t)(1ULL << (8U + (r->m_zhdr0 >> 4))))); - if (counter) { TINFL_CR_RETURN_FOREVER(36, TINFL_STATUS_FAILED); } - } - - do - { - TINFL_GET_BITS(3, r->m_final, 3); r->m_type = r->m_final >> 1; - if (r->m_type == 0) - { - TINFL_SKIP_BITS(5, num_bits & 7); - for (counter = 0; counter < 4; ++counter) { if (num_bits) TINFL_GET_BITS(6, r->m_raw_header[counter], 8); else TINFL_GET_BYTE(7, r->m_raw_header[counter]); } - if ((counter = (r->m_raw_header[0] | (r->m_raw_header[1] << 8))) != (mz_uint)(0xFFFF ^ (r->m_raw_header[2] | (r->m_raw_header[3] << 8)))) { TINFL_CR_RETURN_FOREVER(39, TINFL_STATUS_FAILED); } - while ((counter) && (num_bits)) - { - TINFL_GET_BITS(51, dist, 8); - while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(52, TINFL_STATUS_HAS_MORE_OUTPUT); } - *pOut_buf_cur++ = (mz_uint8)dist; - counter--; - } - while (counter) - { - size_t n; while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(9, TINFL_STATUS_HAS_MORE_OUTPUT); } - while (pIn_buf_cur >= pIn_buf_end) - { - if (decomp_flags & TINFL_FLAG_HAS_MORE_INPUT) - { - TINFL_CR_RETURN(38, TINFL_STATUS_NEEDS_MORE_INPUT); - } - else - { - TINFL_CR_RETURN_FOREVER(40, TINFL_STATUS_FAILED); - } - } - n = MZ_MIN(MZ_MIN((size_t)(pOut_buf_end - pOut_buf_cur), (size_t)(pIn_buf_end - pIn_buf_cur)), counter); - TINFL_MEMCPY(pOut_buf_cur, pIn_buf_cur, n); pIn_buf_cur += n; pOut_buf_cur += n; counter -= (mz_uint)n; - } - } - else if (r->m_type == 3) - { - TINFL_CR_RETURN_FOREVER(10, TINFL_STATUS_FAILED); - } - else - { - if (r->m_type == 1) - { - mz_uint8 *p = r->m_tables[0].m_code_size; mz_uint i; - r->m_table_sizes[0] = 288; r->m_table_sizes[1] = 32; TINFL_MEMSET(r->m_tables[1].m_code_size, 5, 32); - for ( i = 0; i <= 143; ++i) *p++ = 8; for ( ; i <= 255; ++i) *p++ = 9; for ( ; i <= 279; ++i) *p++ = 7; for ( ; i <= 287; ++i) *p++ = 8; - } - else - { - for (counter = 0; counter < 3; counter++) { TINFL_GET_BITS(11, r->m_table_sizes[counter], "\05\05\04"[counter]); r->m_table_sizes[counter] += s_min_table_sizes[counter]; } - MZ_CLEAR_OBJ(r->m_tables[2].m_code_size); for (counter = 0; counter < r->m_table_sizes[2]; counter++) { mz_uint s; TINFL_GET_BITS(14, s, 3); r->m_tables[2].m_code_size[s_length_dezigzag[counter]] = (mz_uint8)s; } - r->m_table_sizes[2] = 19; - } - for ( ; (int)r->m_type >= 0; r->m_type--) - { - int tree_next, tree_cur; tinfl_huff_table *pTable; - mz_uint i, j, used_syms, total, sym_index, next_code[17], total_syms[16]; pTable = &r->m_tables[r->m_type]; MZ_CLEAR_OBJ(total_syms); MZ_CLEAR_OBJ(pTable->m_look_up); MZ_CLEAR_OBJ(pTable->m_tree); - for (i = 0; i < r->m_table_sizes[r->m_type]; ++i) total_syms[pTable->m_code_size[i]]++; - used_syms = 0, total = 0; next_code[0] = next_code[1] = 0; - for (i = 1; i <= 15; ++i) { used_syms += total_syms[i]; next_code[i + 1] = (total = ((total + total_syms[i]) << 1)); } - if ((65536 != total) && (used_syms > 1)) - { - TINFL_CR_RETURN_FOREVER(35, TINFL_STATUS_FAILED); - } - for (tree_next = -1, sym_index = 0; sym_index < r->m_table_sizes[r->m_type]; ++sym_index) - { - mz_uint rev_code = 0, l, cur_code, code_size = pTable->m_code_size[sym_index]; if (!code_size) continue; - cur_code = next_code[code_size]++; for (l = code_size; l > 0; l--, cur_code >>= 1) rev_code = (rev_code << 1) | (cur_code & 1); - if (code_size <= TINFL_FAST_LOOKUP_BITS) { mz_int16 k = (mz_int16)((code_size << 9) | sym_index); while (rev_code < TINFL_FAST_LOOKUP_SIZE) { pTable->m_look_up[rev_code] = k; rev_code += (1 << code_size); } continue; } - if (0 == (tree_cur = pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)])) { pTable->m_look_up[rev_code & (TINFL_FAST_LOOKUP_SIZE - 1)] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; } - rev_code >>= (TINFL_FAST_LOOKUP_BITS - 1); - for (j = code_size; j > (TINFL_FAST_LOOKUP_BITS + 1); j--) - { - tree_cur -= ((rev_code >>= 1) & 1); - if (!pTable->m_tree[-tree_cur - 1]) { pTable->m_tree[-tree_cur - 1] = (mz_int16)tree_next; tree_cur = tree_next; tree_next -= 2; } else tree_cur = pTable->m_tree[-tree_cur - 1]; - } - tree_cur -= ((rev_code >>= 1) & 1); pTable->m_tree[-tree_cur - 1] = (mz_int16)sym_index; - } - if (r->m_type == 2) - { - for (counter = 0; counter < (r->m_table_sizes[0] + r->m_table_sizes[1]); ) - { - mz_uint s; TINFL_HUFF_DECODE(16, dist, &r->m_tables[2]); if (dist < 16) { r->m_len_codes[counter++] = (mz_uint8)dist; continue; } - if ((dist == 16) && (!counter)) - { - TINFL_CR_RETURN_FOREVER(17, TINFL_STATUS_FAILED); - } - num_extra = "\02\03\07"[dist - 16]; TINFL_GET_BITS(18, s, num_extra); s += "\03\03\013"[dist - 16]; - TINFL_MEMSET(r->m_len_codes + counter, (dist == 16) ? r->m_len_codes[counter - 1] : 0, s); counter += s; - } - if ((r->m_table_sizes[0] + r->m_table_sizes[1]) != counter) - { - TINFL_CR_RETURN_FOREVER(21, TINFL_STATUS_FAILED); - } - TINFL_MEMCPY(r->m_tables[0].m_code_size, r->m_len_codes, r->m_table_sizes[0]); TINFL_MEMCPY(r->m_tables[1].m_code_size, r->m_len_codes + r->m_table_sizes[0], r->m_table_sizes[1]); - } - } - for ( ; ; ) - { - mz_uint8 *pSrc; - for ( ; ; ) - { - if (((pIn_buf_end - pIn_buf_cur) < 4) || ((pOut_buf_end - pOut_buf_cur) < 2)) - { - TINFL_HUFF_DECODE(23, counter, &r->m_tables[0]); - if (counter >= 256) - break; - while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(24, TINFL_STATUS_HAS_MORE_OUTPUT); } - *pOut_buf_cur++ = (mz_uint8)counter; - } - else - { - int sym2; mz_uint code_len; -#if TINFL_USE_64BIT_BITBUF - if (num_bits < 30) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE32(pIn_buf_cur)) << num_bits); pIn_buf_cur += 4; num_bits += 32; } -#else - if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; } -#endif - if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) - code_len = sym2 >> 9; - else - { - code_len = TINFL_FAST_LOOKUP_BITS; do { sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; } while (sym2 < 0); - } - counter = sym2; bit_buf >>= code_len; num_bits -= code_len; - if (counter & 256) - break; - -#if !TINFL_USE_64BIT_BITBUF - if (num_bits < 15) { bit_buf |= (((tinfl_bit_buf_t)MZ_READ_LE16(pIn_buf_cur)) << num_bits); pIn_buf_cur += 2; num_bits += 16; } -#endif - if ((sym2 = r->m_tables[0].m_look_up[bit_buf & (TINFL_FAST_LOOKUP_SIZE - 1)]) >= 0) - code_len = sym2 >> 9; - else - { - code_len = TINFL_FAST_LOOKUP_BITS; do { sym2 = r->m_tables[0].m_tree[~sym2 + ((bit_buf >> code_len++) & 1)]; } while (sym2 < 0); - } - bit_buf >>= code_len; num_bits -= code_len; - - pOut_buf_cur[0] = (mz_uint8)counter; - if (sym2 & 256) - { - pOut_buf_cur++; - counter = sym2; - break; - } - pOut_buf_cur[1] = (mz_uint8)sym2; - pOut_buf_cur += 2; - } - } - if ((counter &= 511) == 256) break; - - num_extra = s_length_extra[counter - 257]; counter = s_length_base[counter - 257]; - if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(25, extra_bits, num_extra); counter += extra_bits; } - - TINFL_HUFF_DECODE(26, dist, &r->m_tables[1]); - num_extra = s_dist_extra[dist]; dist = s_dist_base[dist]; - if (num_extra) { mz_uint extra_bits; TINFL_GET_BITS(27, extra_bits, num_extra); dist += extra_bits; } - - dist_from_out_buf_start = pOut_buf_cur - pOut_buf_start; - if ((dist > dist_from_out_buf_start) && (decomp_flags & TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF)) - { - TINFL_CR_RETURN_FOREVER(37, TINFL_STATUS_FAILED); - } - - pSrc = pOut_buf_start + ((dist_from_out_buf_start - dist) & out_buf_size_mask); - - if ((MZ_MAX(pOut_buf_cur, pSrc) + counter) > pOut_buf_end) - { - while (counter--) - { - while (pOut_buf_cur >= pOut_buf_end) { TINFL_CR_RETURN(53, TINFL_STATUS_HAS_MORE_OUTPUT); } - *pOut_buf_cur++ = pOut_buf_start[(dist_from_out_buf_start++ - dist) & out_buf_size_mask]; - } - continue; - } -#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES - else if ((counter >= 9) && (counter <= dist)) - { - const mz_uint8 *pSrc_end = pSrc + (counter & ~7); - do - { - ((mz_uint32 *)pOut_buf_cur)[0] = ((const mz_uint32 *)pSrc)[0]; - ((mz_uint32 *)pOut_buf_cur)[1] = ((const mz_uint32 *)pSrc)[1]; - pOut_buf_cur += 8; - } while ((pSrc += 8) < pSrc_end); - if ((counter &= 7) < 3) - { - if (counter) - { - pOut_buf_cur[0] = pSrc[0]; - if (counter > 1) - pOut_buf_cur[1] = pSrc[1]; - pOut_buf_cur += counter; - } - continue; - } - } -#endif - do - { - pOut_buf_cur[0] = pSrc[0]; - pOut_buf_cur[1] = pSrc[1]; - pOut_buf_cur[2] = pSrc[2]; - pOut_buf_cur += 3; pSrc += 3; - } while ((int)(counter -= 3) > 2); - if ((int)counter > 0) - { - pOut_buf_cur[0] = pSrc[0]; - if ((int)counter > 1) - pOut_buf_cur[1] = pSrc[1]; - pOut_buf_cur += counter; - } - } - } - } while (!(r->m_final & 1)); - if (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) - { - TINFL_SKIP_BITS(32, num_bits & 7); for (counter = 0; counter < 4; ++counter) { mz_uint s; if (num_bits) TINFL_GET_BITS(41, s, 8); else TINFL_GET_BYTE(42, s); r->m_z_adler32 = (r->m_z_adler32 << 8) | s; } - } - TINFL_CR_RETURN_FOREVER(34, TINFL_STATUS_DONE); - TINFL_CR_FINISH - -common_exit: - r->m_num_bits = num_bits; r->m_bit_buf = bit_buf; r->m_dist = dist; r->m_counter = counter; r->m_num_extra = num_extra; r->m_dist_from_out_buf_start = dist_from_out_buf_start; - *pIn_buf_size = pIn_buf_cur - pIn_buf_next; *pOut_buf_size = pOut_buf_cur - pOut_buf_next; - //if ((decomp_flags & (TINFL_FLAG_PARSE_ZLIB_HEADER | TINFL_FLAG_COMPUTE_ADLER32)) && (status >= 0)) - if ((decomp_flags & TINFL_FLAG_COMPUTE_ADLER32) && (status >= 0)) - { - const mz_uint8 *ptr = pOut_buf_next; size_t buf_len = *pOut_buf_size; - mz_uint32 i, s1 = r->m_check_adler32 & 0xffff, s2 = r->m_check_adler32 >> 16; size_t block_len = buf_len % 5552; - while (buf_len) - { - for (i = 0; i + 7 < block_len; i += 8, ptr += 8) - { - s1 += ptr[0], s2 += s1; s1 += ptr[1], s2 += s1; s1 += ptr[2], s2 += s1; s1 += ptr[3], s2 += s1; - s1 += ptr[4], s2 += s1; s1 += ptr[5], s2 += s1; s1 += ptr[6], s2 += s1; s1 += ptr[7], s2 += s1; - } - for ( ; i < block_len; ++i) s1 += *ptr++, s2 += s1; - s1 %= 65521U, s2 %= 65521U; buf_len -= block_len; block_len = 5552; - } - r->m_check_adler32 = (s2 << 16) + s1; - if ((status == TINFL_STATUS_DONE) && (decomp_flags & TINFL_FLAG_PARSE_ZLIB_HEADER) && (r->m_check_adler32 != r->m_z_adler32)) - status = TINFL_STATUS_ADLER32_MISMATCH; - } - return status; -} - -// Higher level helper functions. -void *tinfl_decompress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags) -{ - tinfl_decompressor decomp; void *pBuf = NULL, *pNew_buf; size_t src_buf_ofs = 0, out_buf_capacity = 0; - *pOut_len = 0; - tinfl_init(&decomp); - for ( ; ; ) - { - size_t src_buf_size = src_buf_len - src_buf_ofs, dst_buf_size = out_buf_capacity - *pOut_len, new_out_buf_capacity; - tinfl_status status = tinfl_decompress(&decomp, (const mz_uint8*)pSrc_buf + src_buf_ofs, &src_buf_size, (mz_uint8*)pBuf, pBuf ? (mz_uint8*)pBuf + *pOut_len : NULL, &dst_buf_size, - (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF); - if ((status < 0) || (status == TINFL_STATUS_NEEDS_MORE_INPUT)) - { - MZ_FREE(pBuf); *pOut_len = 0; return NULL; - } - src_buf_ofs += src_buf_size; - *pOut_len += dst_buf_size; - if (status == TINFL_STATUS_DONE) break; - new_out_buf_capacity = out_buf_capacity * 2; if (new_out_buf_capacity < 128) new_out_buf_capacity = 128; - pNew_buf = MZ_REALLOC(pBuf, new_out_buf_capacity); - if (!pNew_buf) - { - MZ_FREE(pBuf); *pOut_len = 0; return NULL; - } - pBuf = pNew_buf; out_buf_capacity = new_out_buf_capacity; - } - return pBuf; -} - -size_t tinfl_decompress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags) -{ - tinfl_decompressor decomp; tinfl_status status; tinfl_init(&decomp); - status = tinfl_decompress(&decomp, (const mz_uint8*)pSrc_buf, &src_buf_len, (mz_uint8*)pOut_buf, (mz_uint8*)pOut_buf, &out_buf_len, (flags & ~TINFL_FLAG_HAS_MORE_INPUT) | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF); - return (status != TINFL_STATUS_DONE) ? TINFL_DECOMPRESS_MEM_TO_MEM_FAILED : out_buf_len; -} - -int tinfl_decompress_mem_to_callback(const void *pIn_buf, size_t *pIn_buf_size, tinfl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags) -{ - int result = 0; - tinfl_decompressor decomp; - mz_uint8 *pDict = (mz_uint8*)MZ_MALLOC(TINFL_LZ_DICT_SIZE); size_t in_buf_ofs = 0, dict_ofs = 0; - if (!pDict) - return TINFL_STATUS_FAILED; - tinfl_init(&decomp); - for ( ; ; ) - { - size_t in_buf_size = *pIn_buf_size - in_buf_ofs, dst_buf_size = TINFL_LZ_DICT_SIZE - dict_ofs; - tinfl_status status = tinfl_decompress(&decomp, (const mz_uint8*)pIn_buf + in_buf_ofs, &in_buf_size, pDict, pDict + dict_ofs, &dst_buf_size, - (flags & ~(TINFL_FLAG_HAS_MORE_INPUT | TINFL_FLAG_USING_NON_WRAPPING_OUTPUT_BUF))); - in_buf_ofs += in_buf_size; - if ((dst_buf_size) && (!(*pPut_buf_func)(pDict + dict_ofs, (int)dst_buf_size, pPut_buf_user))) - break; - if (status != TINFL_STATUS_HAS_MORE_OUTPUT) - { - result = (status == TINFL_STATUS_DONE); - break; - } - dict_ofs = (dict_ofs + dst_buf_size) & (TINFL_LZ_DICT_SIZE - 1); - } - MZ_FREE(pDict); - *pIn_buf_size = in_buf_ofs; - return result; -} - -// ------------------- Low-level Compression (independent from all decompression API's) - -// Purposely making these tables static for faster init and thread safety. -static const mz_uint16 s_tdefl_len_sym[256] = { - 257,258,259,260,261,262,263,264,265,265,266,266,267,267,268,268,269,269,269,269,270,270,270,270,271,271,271,271,272,272,272,272, - 273,273,273,273,273,273,273,273,274,274,274,274,274,274,274,274,275,275,275,275,275,275,275,275,276,276,276,276,276,276,276,276, - 277,277,277,277,277,277,277,277,277,277,277,277,277,277,277,277,278,278,278,278,278,278,278,278,278,278,278,278,278,278,278,278, - 279,279,279,279,279,279,279,279,279,279,279,279,279,279,279,279,280,280,280,280,280,280,280,280,280,280,280,280,280,280,280,280, - 281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281,281, - 282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282,282, - 283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283,283, - 284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,284,285 }; - -static const mz_uint8 s_tdefl_len_extra[256] = { - 0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,0 }; - -static const mz_uint8 s_tdefl_small_dist_sym[512] = { - 0,1,2,3,4,4,5,5,6,6,6,6,7,7,7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11, - 11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13, - 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,14, - 14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14, - 14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15, - 15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,16,16,16,16,16,16,16,16,16,16,16,16,16, - 16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, - 16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16, - 16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,16,17,17,17,17,17,17,17,17,17,17,17,17,17,17, - 17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17, - 17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17, - 17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17,17 }; - -static const mz_uint8 s_tdefl_small_dist_extra[512] = { - 0,0,0,0,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7 }; - -static const mz_uint8 s_tdefl_large_dist_sym[128] = { - 0,0,18,19,20,20,21,21,22,22,22,22,23,23,23,23,24,24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,26,26,26,26, - 26,26,26,26,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,27,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28,28, - 28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29,29 }; - -static const mz_uint8 s_tdefl_large_dist_extra[128] = { - 0,0,8,8,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12, - 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13, - 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13 }; - -// Radix sorts tdefl_sym_freq[] array by 16-bit key m_key. Returns ptr to sorted values. -typedef struct { mz_uint16 m_key, m_sym_index; } tdefl_sym_freq; -static tdefl_sym_freq* tdefl_radix_sort_syms(mz_uint num_syms, tdefl_sym_freq* pSyms0, tdefl_sym_freq* pSyms1) -{ - mz_uint32 total_passes = 2, pass_shift, pass, i, hist[256 * 2]; tdefl_sym_freq* pCur_syms = pSyms0, *pNew_syms = pSyms1; MZ_CLEAR_OBJ(hist); - for (i = 0; i < num_syms; i++) { mz_uint freq = pSyms0[i].m_key; hist[freq & 0xFF]++; hist[256 + ((freq >> 8) & 0xFF)]++; } - while ((total_passes > 1) && (num_syms == hist[(total_passes - 1) * 256])) total_passes--; - for (pass_shift = 0, pass = 0; pass < total_passes; pass++, pass_shift += 8) - { - const mz_uint32* pHist = &hist[pass << 8]; - mz_uint offsets[256], cur_ofs = 0; - for (i = 0; i < 256; i++) { offsets[i] = cur_ofs; cur_ofs += pHist[i]; } - for (i = 0; i < num_syms; i++) pNew_syms[offsets[(pCur_syms[i].m_key >> pass_shift) & 0xFF]++] = pCur_syms[i]; - { tdefl_sym_freq* t = pCur_syms; pCur_syms = pNew_syms; pNew_syms = t; } - } - return pCur_syms; -} - -// tdefl_calculate_minimum_redundancy() originally written by: Alistair Moffat, alistair@cs.mu.oz.au, Jyrki Katajainen, jyrki@diku.dk, November 1996. -static void tdefl_calculate_minimum_redundancy(tdefl_sym_freq *A, int n) -{ - int root, leaf, next, avbl, used, dpth; - if (n==0) return; else if (n==1) { A[0].m_key = 1; return; } - A[0].m_key += A[1].m_key; root = 0; leaf = 2; - for (next=1; next < n-1; next++) - { - if (leaf>=n || A[root].m_key=n || (root=0; next--) A[next].m_key = A[A[next].m_key].m_key+1; - avbl = 1; used = dpth = 0; root = n-2; next = n-1; - while (avbl>0) - { - while (root>=0 && (int)A[root].m_key==dpth) { used++; root--; } - while (avbl>used) { A[next--].m_key = (mz_uint16)(dpth); avbl--; } - avbl = 2*used; dpth++; used = 0; - } -} - -// Limits canonical Huffman code table's max code size. -enum { TDEFL_MAX_SUPPORTED_HUFF_CODESIZE = 32 }; -static void tdefl_huffman_enforce_max_code_size(int *pNum_codes, int code_list_len, int max_code_size) -{ - int i; mz_uint32 total = 0; if (code_list_len <= 1) return; - for (i = max_code_size + 1; i <= TDEFL_MAX_SUPPORTED_HUFF_CODESIZE; i++) pNum_codes[max_code_size] += pNum_codes[i]; - for (i = max_code_size; i > 0; i--) total += (((mz_uint32)pNum_codes[i]) << (max_code_size - i)); - while (total != (1UL << max_code_size)) - { - pNum_codes[max_code_size]--; - for (i = max_code_size - 1; i > 0; i--) if (pNum_codes[i]) { pNum_codes[i]--; pNum_codes[i + 1] += 2; break; } - total--; - } -} - -static void tdefl_optimize_huffman_table(tdefl_compressor *d, int table_num, int table_len, int code_size_limit, int static_table) -{ - int i, j, l, num_codes[1 + TDEFL_MAX_SUPPORTED_HUFF_CODESIZE]; mz_uint next_code[TDEFL_MAX_SUPPORTED_HUFF_CODESIZE + 1]; MZ_CLEAR_OBJ(num_codes); - if (static_table) - { - for (i = 0; i < table_len; i++) num_codes[d->m_huff_code_sizes[table_num][i]]++; - } - else - { - tdefl_sym_freq syms0[TDEFL_MAX_HUFF_SYMBOLS], syms1[TDEFL_MAX_HUFF_SYMBOLS], *pSyms; - int num_used_syms = 0; - const mz_uint16 *pSym_count = &d->m_huff_count[table_num][0]; - for (i = 0; i < table_len; i++) if (pSym_count[i]) { syms0[num_used_syms].m_key = (mz_uint16)pSym_count[i]; syms0[num_used_syms++].m_sym_index = (mz_uint16)i; } - - pSyms = tdefl_radix_sort_syms(num_used_syms, syms0, syms1); tdefl_calculate_minimum_redundancy(pSyms, num_used_syms); - - for (i = 0; i < num_used_syms; i++) num_codes[pSyms[i].m_key]++; - - tdefl_huffman_enforce_max_code_size(num_codes, num_used_syms, code_size_limit); - - MZ_CLEAR_OBJ(d->m_huff_code_sizes[table_num]); MZ_CLEAR_OBJ(d->m_huff_codes[table_num]); - for (i = 1, j = num_used_syms; i <= code_size_limit; i++) - for (l = num_codes[i]; l > 0; l--) d->m_huff_code_sizes[table_num][pSyms[--j].m_sym_index] = (mz_uint8)(i); - } - - next_code[1] = 0; for (j = 0, i = 2; i <= code_size_limit; i++) next_code[i] = j = ((j + num_codes[i - 1]) << 1); - - for (i = 0; i < table_len; i++) - { - mz_uint rev_code = 0, code, code_size; if ((code_size = d->m_huff_code_sizes[table_num][i]) == 0) continue; - code = next_code[code_size]++; for (l = code_size; l > 0; l--, code >>= 1) rev_code = (rev_code << 1) | (code & 1); - d->m_huff_codes[table_num][i] = (mz_uint16)rev_code; - } -} - -#define TDEFL_PUT_BITS(b, l) do { \ - mz_uint bits = b; mz_uint len = l; MZ_ASSERT(bits <= ((1U << len) - 1U)); \ - d->m_bit_buffer |= (bits << d->m_bits_in); d->m_bits_in += len; \ - while (d->m_bits_in >= 8) { \ - if (d->m_pOutput_buf < d->m_pOutput_buf_end) \ - *d->m_pOutput_buf++ = (mz_uint8)(d->m_bit_buffer); \ - d->m_bit_buffer >>= 8; \ - d->m_bits_in -= 8; \ - } \ -} MZ_MACRO_END - -#define TDEFL_RLE_PREV_CODE_SIZE() { if (rle_repeat_count) { \ - if (rle_repeat_count < 3) { \ - d->m_huff_count[2][prev_code_size] = (mz_uint16)(d->m_huff_count[2][prev_code_size] + rle_repeat_count); \ - while (rle_repeat_count--) packed_code_sizes[num_packed_code_sizes++] = prev_code_size; \ - } else { \ - d->m_huff_count[2][16] = (mz_uint16)(d->m_huff_count[2][16] + 1); packed_code_sizes[num_packed_code_sizes++] = 16; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_repeat_count - 3); \ -} rle_repeat_count = 0; } } - -#define TDEFL_RLE_ZERO_CODE_SIZE() { if (rle_z_count) { \ - if (rle_z_count < 3) { \ - d->m_huff_count[2][0] = (mz_uint16)(d->m_huff_count[2][0] + rle_z_count); while (rle_z_count--) packed_code_sizes[num_packed_code_sizes++] = 0; \ - } else if (rle_z_count <= 10) { \ - d->m_huff_count[2][17] = (mz_uint16)(d->m_huff_count[2][17] + 1); packed_code_sizes[num_packed_code_sizes++] = 17; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 3); \ - } else { \ - d->m_huff_count[2][18] = (mz_uint16)(d->m_huff_count[2][18] + 1); packed_code_sizes[num_packed_code_sizes++] = 18; packed_code_sizes[num_packed_code_sizes++] = (mz_uint8)(rle_z_count - 11); \ -} rle_z_count = 0; } } - -static mz_uint8 s_tdefl_packed_code_size_syms_swizzle[] = { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 }; - -static void tdefl_start_dynamic_block(tdefl_compressor *d) -{ - int num_lit_codes, num_dist_codes, num_bit_lengths; mz_uint i, total_code_sizes_to_pack, num_packed_code_sizes, rle_z_count, rle_repeat_count, packed_code_sizes_index; - mz_uint8 code_sizes_to_pack[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], packed_code_sizes[TDEFL_MAX_HUFF_SYMBOLS_0 + TDEFL_MAX_HUFF_SYMBOLS_1], prev_code_size = 0xFF; - - d->m_huff_count[0][256] = 1; - - tdefl_optimize_huffman_table(d, 0, TDEFL_MAX_HUFF_SYMBOLS_0, 15, MZ_FALSE); - tdefl_optimize_huffman_table(d, 1, TDEFL_MAX_HUFF_SYMBOLS_1, 15, MZ_FALSE); - - for (num_lit_codes = 286; num_lit_codes > 257; num_lit_codes--) if (d->m_huff_code_sizes[0][num_lit_codes - 1]) break; - for (num_dist_codes = 30; num_dist_codes > 1; num_dist_codes--) if (d->m_huff_code_sizes[1][num_dist_codes - 1]) break; - - memcpy(code_sizes_to_pack, &d->m_huff_code_sizes[0][0], num_lit_codes); - memcpy(code_sizes_to_pack + num_lit_codes, &d->m_huff_code_sizes[1][0], num_dist_codes); - total_code_sizes_to_pack = num_lit_codes + num_dist_codes; num_packed_code_sizes = 0; rle_z_count = 0; rle_repeat_count = 0; - - memset(&d->m_huff_count[2][0], 0, sizeof(d->m_huff_count[2][0]) * TDEFL_MAX_HUFF_SYMBOLS_2); - for (i = 0; i < total_code_sizes_to_pack; i++) - { - mz_uint8 code_size = code_sizes_to_pack[i]; - if (!code_size) - { - TDEFL_RLE_PREV_CODE_SIZE(); - if (++rle_z_count == 138) { TDEFL_RLE_ZERO_CODE_SIZE(); } - } - else - { - TDEFL_RLE_ZERO_CODE_SIZE(); - if (code_size != prev_code_size) - { - TDEFL_RLE_PREV_CODE_SIZE(); - d->m_huff_count[2][code_size] = (mz_uint16)(d->m_huff_count[2][code_size] + 1); packed_code_sizes[num_packed_code_sizes++] = code_size; - } - else if (++rle_repeat_count == 6) - { - TDEFL_RLE_PREV_CODE_SIZE(); - } - } - prev_code_size = code_size; - } - if (rle_repeat_count) { TDEFL_RLE_PREV_CODE_SIZE(); } else { TDEFL_RLE_ZERO_CODE_SIZE(); } - - tdefl_optimize_huffman_table(d, 2, TDEFL_MAX_HUFF_SYMBOLS_2, 7, MZ_FALSE); - - TDEFL_PUT_BITS(2, 2); - - TDEFL_PUT_BITS(num_lit_codes - 257, 5); - TDEFL_PUT_BITS(num_dist_codes - 1, 5); - - for (num_bit_lengths = 18; num_bit_lengths >= 0; num_bit_lengths--) if (d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[num_bit_lengths]]) break; - num_bit_lengths = MZ_MAX(4, (num_bit_lengths + 1)); TDEFL_PUT_BITS(num_bit_lengths - 4, 4); - for (i = 0; (int)i < num_bit_lengths; i++) TDEFL_PUT_BITS(d->m_huff_code_sizes[2][s_tdefl_packed_code_size_syms_swizzle[i]], 3); - - for (packed_code_sizes_index = 0; packed_code_sizes_index < num_packed_code_sizes; ) - { - mz_uint code = packed_code_sizes[packed_code_sizes_index++]; MZ_ASSERT(code < TDEFL_MAX_HUFF_SYMBOLS_2); - TDEFL_PUT_BITS(d->m_huff_codes[2][code], d->m_huff_code_sizes[2][code]); - if (code >= 16) TDEFL_PUT_BITS(packed_code_sizes[packed_code_sizes_index++], "\02\03\07"[code - 16]); - } -} - -static void tdefl_start_static_block(tdefl_compressor *d) -{ - mz_uint i; - mz_uint8 *p = &d->m_huff_code_sizes[0][0]; - - for (i = 0; i <= 143; ++i) *p++ = 8; - for ( ; i <= 255; ++i) *p++ = 9; - for ( ; i <= 279; ++i) *p++ = 7; - for ( ; i <= 287; ++i) *p++ = 8; - - memset(d->m_huff_code_sizes[1], 5, 32); - - tdefl_optimize_huffman_table(d, 0, 288, 15, MZ_TRUE); - tdefl_optimize_huffman_table(d, 1, 32, 15, MZ_TRUE); - - TDEFL_PUT_BITS(1, 2); -} - -static const mz_uint mz_bitmasks[17] = { 0x0000, 0x0001, 0x0003, 0x0007, 0x000F, 0x001F, 0x003F, 0x007F, 0x00FF, 0x01FF, 0x03FF, 0x07FF, 0x0FFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF }; - -#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS -static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d) -{ - mz_uint flags; - mz_uint8 *pLZ_codes; - mz_uint8 *pOutput_buf = d->m_pOutput_buf; - mz_uint8 *pLZ_code_buf_end = d->m_pLZ_code_buf; - mz_uint64 bit_buffer = d->m_bit_buffer; - mz_uint bits_in = d->m_bits_in; - -#define TDEFL_PUT_BITS_FAST(b, l) { bit_buffer |= (((mz_uint64)(b)) << bits_in); bits_in += (l); } - - flags = 1; - for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < pLZ_code_buf_end; flags >>= 1) - { - if (flags == 1) - flags = *pLZ_codes++ | 0x100; - - if (flags & 1) - { - mz_uint s0, s1, n0, n1, sym, num_extra_bits; - mz_uint match_len = pLZ_codes[0], match_dist = *(const mz_uint16 *)(pLZ_codes + 1); pLZ_codes += 3; - - MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); - TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); - TDEFL_PUT_BITS_FAST(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]); - - // This sequence coaxes MSVC into using cmov's vs. jmp's. - s0 = s_tdefl_small_dist_sym[match_dist & 511]; - n0 = s_tdefl_small_dist_extra[match_dist & 511]; - s1 = s_tdefl_large_dist_sym[match_dist >> 8]; - n1 = s_tdefl_large_dist_extra[match_dist >> 8]; - sym = (match_dist < 512) ? s0 : s1; - num_extra_bits = (match_dist < 512) ? n0 : n1; - - MZ_ASSERT(d->m_huff_code_sizes[1][sym]); - TDEFL_PUT_BITS_FAST(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]); - TDEFL_PUT_BITS_FAST(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits); - } - else - { - mz_uint lit = *pLZ_codes++; - MZ_ASSERT(d->m_huff_code_sizes[0][lit]); - TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]); - - if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) - { - flags >>= 1; - lit = *pLZ_codes++; - MZ_ASSERT(d->m_huff_code_sizes[0][lit]); - TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]); - - if (((flags & 2) == 0) && (pLZ_codes < pLZ_code_buf_end)) - { - flags >>= 1; - lit = *pLZ_codes++; - MZ_ASSERT(d->m_huff_code_sizes[0][lit]); - TDEFL_PUT_BITS_FAST(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]); - } - } - } - - if (pOutput_buf >= d->m_pOutput_buf_end) - return MZ_FALSE; - - *(mz_uint64*)pOutput_buf = bit_buffer; - pOutput_buf += (bits_in >> 3); - bit_buffer >>= (bits_in & ~7); - bits_in &= 7; - } - -#undef TDEFL_PUT_BITS_FAST - - d->m_pOutput_buf = pOutput_buf; - d->m_bits_in = 0; - d->m_bit_buffer = 0; - - while (bits_in) - { - mz_uint32 n = MZ_MIN(bits_in, 16); - TDEFL_PUT_BITS((mz_uint)bit_buffer & mz_bitmasks[n], n); - bit_buffer >>= n; - bits_in -= n; - } - - TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]); - - return (d->m_pOutput_buf < d->m_pOutput_buf_end); -} -#else -static mz_bool tdefl_compress_lz_codes(tdefl_compressor *d) -{ - mz_uint flags; - mz_uint8 *pLZ_codes; - - flags = 1; - for (pLZ_codes = d->m_lz_code_buf; pLZ_codes < d->m_pLZ_code_buf; flags >>= 1) - { - if (flags == 1) - flags = *pLZ_codes++ | 0x100; - if (flags & 1) - { - mz_uint sym, num_extra_bits; - mz_uint match_len = pLZ_codes[0], match_dist = (pLZ_codes[1] | (pLZ_codes[2] << 8)); pLZ_codes += 3; - - MZ_ASSERT(d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); - TDEFL_PUT_BITS(d->m_huff_codes[0][s_tdefl_len_sym[match_len]], d->m_huff_code_sizes[0][s_tdefl_len_sym[match_len]]); - TDEFL_PUT_BITS(match_len & mz_bitmasks[s_tdefl_len_extra[match_len]], s_tdefl_len_extra[match_len]); - - if (match_dist < 512) - { - sym = s_tdefl_small_dist_sym[match_dist]; num_extra_bits = s_tdefl_small_dist_extra[match_dist]; - } - else - { - sym = s_tdefl_large_dist_sym[match_dist >> 8]; num_extra_bits = s_tdefl_large_dist_extra[match_dist >> 8]; - } - MZ_ASSERT(d->m_huff_code_sizes[1][sym]); - TDEFL_PUT_BITS(d->m_huff_codes[1][sym], d->m_huff_code_sizes[1][sym]); - TDEFL_PUT_BITS(match_dist & mz_bitmasks[num_extra_bits], num_extra_bits); - } - else - { - mz_uint lit = *pLZ_codes++; - MZ_ASSERT(d->m_huff_code_sizes[0][lit]); - TDEFL_PUT_BITS(d->m_huff_codes[0][lit], d->m_huff_code_sizes[0][lit]); - } - } - - TDEFL_PUT_BITS(d->m_huff_codes[0][256], d->m_huff_code_sizes[0][256]); - - return (d->m_pOutput_buf < d->m_pOutput_buf_end); -} -#endif // MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN && MINIZ_HAS_64BIT_REGISTERS - -static mz_bool tdefl_compress_block(tdefl_compressor *d, mz_bool static_block) -{ - if (static_block) - tdefl_start_static_block(d); - else - tdefl_start_dynamic_block(d); - return tdefl_compress_lz_codes(d); -} - -static int tdefl_flush_block(tdefl_compressor *d, int flush) -{ - mz_uint saved_bit_buf, saved_bits_in; - mz_uint8 *pSaved_output_buf; - mz_bool comp_block_succeeded = MZ_FALSE; - int n, use_raw_block = ((d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS) != 0) && (d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size; - mz_uint8 *pOutput_buf_start = ((d->m_pPut_buf_func == NULL) && ((*d->m_pOut_buf_size - d->m_out_buf_ofs) >= TDEFL_OUT_BUF_SIZE)) ? ((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs) : d->m_output_buf; - - d->m_pOutput_buf = pOutput_buf_start; - d->m_pOutput_buf_end = d->m_pOutput_buf + TDEFL_OUT_BUF_SIZE - 16; - - MZ_ASSERT(!d->m_output_flush_remaining); - d->m_output_flush_ofs = 0; - d->m_output_flush_remaining = 0; - - *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> d->m_num_flags_left); - d->m_pLZ_code_buf -= (d->m_num_flags_left == 8); - - if ((d->m_flags & TDEFL_WRITE_ZLIB_HEADER) && (!d->m_block_index)) - { - TDEFL_PUT_BITS(0x78, 8); TDEFL_PUT_BITS(0x01, 8); - } - - TDEFL_PUT_BITS(flush == TDEFL_FINISH, 1); - - pSaved_output_buf = d->m_pOutput_buf; saved_bit_buf = d->m_bit_buffer; saved_bits_in = d->m_bits_in; - - if (!use_raw_block) - comp_block_succeeded = tdefl_compress_block(d, (d->m_flags & TDEFL_FORCE_ALL_STATIC_BLOCKS) || (d->m_total_lz_bytes < 48)); - - // If the block gets expanded, forget the current contents of the output buffer and send a raw block instead. - if ( ((use_raw_block) || ((d->m_total_lz_bytes) && ((d->m_pOutput_buf - pSaved_output_buf + 1U) >= d->m_total_lz_bytes))) && - ((d->m_lookahead_pos - d->m_lz_code_buf_dict_pos) <= d->m_dict_size) ) - { - mz_uint i; d->m_pOutput_buf = pSaved_output_buf; d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in; - TDEFL_PUT_BITS(0, 2); - if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); } - for (i = 2; i; --i, d->m_total_lz_bytes ^= 0xFFFF) - { - TDEFL_PUT_BITS(d->m_total_lz_bytes & 0xFFFF, 16); - } - for (i = 0; i < d->m_total_lz_bytes; ++i) - { - TDEFL_PUT_BITS(d->m_dict[(d->m_lz_code_buf_dict_pos + i) & TDEFL_LZ_DICT_SIZE_MASK], 8); - } - } - // Check for the extremely unlikely (if not impossible) case of the compressed block not fitting into the output buffer when using dynamic codes. - else if (!comp_block_succeeded) - { - d->m_pOutput_buf = pSaved_output_buf; d->m_bit_buffer = saved_bit_buf, d->m_bits_in = saved_bits_in; - tdefl_compress_block(d, MZ_TRUE); - } - - if (flush) - { - if (flush == TDEFL_FINISH) - { - if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); } - if (d->m_flags & TDEFL_WRITE_ZLIB_HEADER) { mz_uint i, a = d->m_adler32; for (i = 0; i < 4; i++) { TDEFL_PUT_BITS((a >> 24) & 0xFF, 8); a <<= 8; } } - } - else - { - mz_uint i, z = 0; TDEFL_PUT_BITS(0, 3); if (d->m_bits_in) { TDEFL_PUT_BITS(0, 8 - d->m_bits_in); } for (i = 2; i; --i, z ^= 0xFFFF) { TDEFL_PUT_BITS(z & 0xFFFF, 16); } - } - } - - MZ_ASSERT(d->m_pOutput_buf < d->m_pOutput_buf_end); - - memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0); - memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1); - - d->m_pLZ_code_buf = d->m_lz_code_buf + 1; d->m_pLZ_flags = d->m_lz_code_buf; d->m_num_flags_left = 8; d->m_lz_code_buf_dict_pos += d->m_total_lz_bytes; d->m_total_lz_bytes = 0; d->m_block_index++; - - if ((n = (int)(d->m_pOutput_buf - pOutput_buf_start)) != 0) - { - if (d->m_pPut_buf_func) - { - *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf; - if (!(*d->m_pPut_buf_func)(d->m_output_buf, n, d->m_pPut_buf_user)) - return (d->m_prev_return_status = TDEFL_STATUS_PUT_BUF_FAILED); - } - else if (pOutput_buf_start == d->m_output_buf) - { - int bytes_to_copy = (int)MZ_MIN((size_t)n, (size_t)(*d->m_pOut_buf_size - d->m_out_buf_ofs)); - memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf, bytes_to_copy); - d->m_out_buf_ofs += bytes_to_copy; - if ((n -= bytes_to_copy) != 0) - { - d->m_output_flush_ofs = bytes_to_copy; - d->m_output_flush_remaining = n; - } - } - else - { - d->m_out_buf_ofs += n; - } - } - - return d->m_output_flush_remaining; -} - -#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES -#define TDEFL_READ_UNALIGNED_WORD(p) *(const mz_uint16*)(p) -static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, mz_uint max_match_len, mz_uint *pMatch_dist, mz_uint *pMatch_len) -{ - mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos, probe_len; - mz_uint num_probes_left = d->m_max_probes[match_len >= 32]; - const mz_uint16 *s = (const mz_uint16*)(d->m_dict + pos), *p, *q; - mz_uint16 c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]), s01 = TDEFL_READ_UNALIGNED_WORD(s); - MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); if (max_match_len <= match_len) return; - for ( ; ; ) - { - for ( ; ; ) - { - if (--num_probes_left == 0) return; - #define TDEFL_PROBE \ - next_probe_pos = d->m_next[probe_pos]; \ - if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \ - probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \ - if (TDEFL_READ_UNALIGNED_WORD(&d->m_dict[probe_pos + match_len - 1]) == c01) break; - TDEFL_PROBE; TDEFL_PROBE; TDEFL_PROBE; - } - if (!dist) break; q = (const mz_uint16*)(d->m_dict + probe_pos); if (TDEFL_READ_UNALIGNED_WORD(q) != s01) continue; p = s; probe_len = 32; - do { } while ( (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && - (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (--probe_len > 0) ); - if (!probe_len) - { - *pMatch_dist = dist; *pMatch_len = MZ_MIN(max_match_len, TDEFL_MAX_MATCH_LEN); break; - } - else if ((probe_len = ((mz_uint)(p - s) * 2) + (mz_uint)(*(const mz_uint8*)p == *(const mz_uint8*)q)) > match_len) - { - *pMatch_dist = dist; if ((*pMatch_len = match_len = MZ_MIN(max_match_len, probe_len)) == max_match_len) break; - c01 = TDEFL_READ_UNALIGNED_WORD(&d->m_dict[pos + match_len - 1]); - } - } -} -#else -static MZ_FORCEINLINE void tdefl_find_match(tdefl_compressor *d, mz_uint lookahead_pos, mz_uint max_dist, mz_uint max_match_len, mz_uint *pMatch_dist, mz_uint *pMatch_len) -{ - mz_uint dist, pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK, match_len = *pMatch_len, probe_pos = pos, next_probe_pos, probe_len; - mz_uint num_probes_left = d->m_max_probes[match_len >= 32]; - const mz_uint8 *s = d->m_dict + pos, *p, *q; - mz_uint8 c0 = d->m_dict[pos + match_len], c1 = d->m_dict[pos + match_len - 1]; - MZ_ASSERT(max_match_len <= TDEFL_MAX_MATCH_LEN); if (max_match_len <= match_len) return; - for ( ; ; ) - { - for ( ; ; ) - { - if (--num_probes_left == 0) return; - #define TDEFL_PROBE \ - next_probe_pos = d->m_next[probe_pos]; \ - if ((!next_probe_pos) || ((dist = (mz_uint16)(lookahead_pos - next_probe_pos)) > max_dist)) return; \ - probe_pos = next_probe_pos & TDEFL_LZ_DICT_SIZE_MASK; \ - if ((d->m_dict[probe_pos + match_len] == c0) && (d->m_dict[probe_pos + match_len - 1] == c1)) break; - TDEFL_PROBE; TDEFL_PROBE; TDEFL_PROBE; - } - if (!dist) break; p = s; q = d->m_dict + probe_pos; for (probe_len = 0; probe_len < max_match_len; probe_len++) if (*p++ != *q++) break; - if (probe_len > match_len) - { - *pMatch_dist = dist; if ((*pMatch_len = match_len = probe_len) == max_match_len) return; - c0 = d->m_dict[pos + match_len]; c1 = d->m_dict[pos + match_len - 1]; - } - } -} -#endif // #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES - -#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN -static mz_bool tdefl_compress_fast(tdefl_compressor *d) -{ - // Faster, minimally featured LZRW1-style match+parse loop with better register utilization. Intended for applications where raw throughput is valued more highly than ratio. - mz_uint lookahead_pos = d->m_lookahead_pos, lookahead_size = d->m_lookahead_size, dict_size = d->m_dict_size, total_lz_bytes = d->m_total_lz_bytes, num_flags_left = d->m_num_flags_left; - mz_uint8 *pLZ_code_buf = d->m_pLZ_code_buf, *pLZ_flags = d->m_pLZ_flags; - mz_uint cur_pos = lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK; - - while ((d->m_src_buf_left) || ((d->m_flush) && (lookahead_size))) - { - const mz_uint TDEFL_COMP_FAST_LOOKAHEAD_SIZE = 4096; - mz_uint dst_pos = (lookahead_pos + lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK; - mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(d->m_src_buf_left, TDEFL_COMP_FAST_LOOKAHEAD_SIZE - lookahead_size); - d->m_src_buf_left -= num_bytes_to_process; - lookahead_size += num_bytes_to_process; - - while (num_bytes_to_process) - { - mz_uint32 n = MZ_MIN(TDEFL_LZ_DICT_SIZE - dst_pos, num_bytes_to_process); - memcpy(d->m_dict + dst_pos, d->m_pSrc, n); - if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) - memcpy(d->m_dict + TDEFL_LZ_DICT_SIZE + dst_pos, d->m_pSrc, MZ_MIN(n, (TDEFL_MAX_MATCH_LEN - 1) - dst_pos)); - d->m_pSrc += n; - dst_pos = (dst_pos + n) & TDEFL_LZ_DICT_SIZE_MASK; - num_bytes_to_process -= n; - } - - dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - lookahead_size, dict_size); - if ((!d->m_flush) && (lookahead_size < TDEFL_COMP_FAST_LOOKAHEAD_SIZE)) break; - - while (lookahead_size >= 4) - { - mz_uint cur_match_dist, cur_match_len = 1; - mz_uint8 *pCur_dict = d->m_dict + cur_pos; - mz_uint first_trigram = (*(const mz_uint32 *)pCur_dict) & 0xFFFFFF; - mz_uint hash = (first_trigram ^ (first_trigram >> (24 - (TDEFL_LZ_HASH_BITS - 8)))) & TDEFL_LEVEL1_HASH_SIZE_MASK; - mz_uint probe_pos = d->m_hash[hash]; - d->m_hash[hash] = (mz_uint16)lookahead_pos; - - if (((cur_match_dist = (mz_uint16)(lookahead_pos - probe_pos)) <= dict_size) && ((*(const mz_uint32 *)(d->m_dict + (probe_pos &= TDEFL_LZ_DICT_SIZE_MASK)) & 0xFFFFFF) == first_trigram)) - { - const mz_uint16 *p = (const mz_uint16 *)pCur_dict; - const mz_uint16 *q = (const mz_uint16 *)(d->m_dict + probe_pos); - mz_uint32 probe_len = 32; - do { } while ( (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && - (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (TDEFL_READ_UNALIGNED_WORD(++p) == TDEFL_READ_UNALIGNED_WORD(++q)) && (--probe_len > 0) ); - cur_match_len = ((mz_uint)(p - (const mz_uint16 *)pCur_dict) * 2) + (mz_uint)(*(const mz_uint8 *)p == *(const mz_uint8 *)q); - if (!probe_len) - cur_match_len = cur_match_dist ? TDEFL_MAX_MATCH_LEN : 0; - - if ((cur_match_len < TDEFL_MIN_MATCH_LEN) || ((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U*1024U))) - { - cur_match_len = 1; - *pLZ_code_buf++ = (mz_uint8)first_trigram; - *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1); - d->m_huff_count[0][(mz_uint8)first_trigram]++; - } - else - { - mz_uint32 s0, s1; - cur_match_len = MZ_MIN(cur_match_len, lookahead_size); - - MZ_ASSERT((cur_match_len >= TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 1) && (cur_match_dist <= TDEFL_LZ_DICT_SIZE)); - - cur_match_dist--; - - pLZ_code_buf[0] = (mz_uint8)(cur_match_len - TDEFL_MIN_MATCH_LEN); - *(mz_uint16 *)(&pLZ_code_buf[1]) = (mz_uint16)cur_match_dist; - pLZ_code_buf += 3; - *pLZ_flags = (mz_uint8)((*pLZ_flags >> 1) | 0x80); - - s0 = s_tdefl_small_dist_sym[cur_match_dist & 511]; - s1 = s_tdefl_large_dist_sym[cur_match_dist >> 8]; - d->m_huff_count[1][(cur_match_dist < 512) ? s0 : s1]++; - - d->m_huff_count[0][s_tdefl_len_sym[cur_match_len - TDEFL_MIN_MATCH_LEN]]++; - } - } - else - { - *pLZ_code_buf++ = (mz_uint8)first_trigram; - *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1); - d->m_huff_count[0][(mz_uint8)first_trigram]++; - } - - if (--num_flags_left == 0) { num_flags_left = 8; pLZ_flags = pLZ_code_buf++; } - - total_lz_bytes += cur_match_len; - lookahead_pos += cur_match_len; - dict_size = MZ_MIN(dict_size + cur_match_len, TDEFL_LZ_DICT_SIZE); - cur_pos = (cur_pos + cur_match_len) & TDEFL_LZ_DICT_SIZE_MASK; - MZ_ASSERT(lookahead_size >= cur_match_len); - lookahead_size -= cur_match_len; - - if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) - { - int n; - d->m_lookahead_pos = lookahead_pos; d->m_lookahead_size = lookahead_size; d->m_dict_size = dict_size; - d->m_total_lz_bytes = total_lz_bytes; d->m_pLZ_code_buf = pLZ_code_buf; d->m_pLZ_flags = pLZ_flags; d->m_num_flags_left = num_flags_left; - if ((n = tdefl_flush_block(d, 0)) != 0) - return (n < 0) ? MZ_FALSE : MZ_TRUE; - total_lz_bytes = d->m_total_lz_bytes; pLZ_code_buf = d->m_pLZ_code_buf; pLZ_flags = d->m_pLZ_flags; num_flags_left = d->m_num_flags_left; - } - } - - while (lookahead_size) - { - mz_uint8 lit = d->m_dict[cur_pos]; - - total_lz_bytes++; - *pLZ_code_buf++ = lit; - *pLZ_flags = (mz_uint8)(*pLZ_flags >> 1); - if (--num_flags_left == 0) { num_flags_left = 8; pLZ_flags = pLZ_code_buf++; } - - d->m_huff_count[0][lit]++; - - lookahead_pos++; - dict_size = MZ_MIN(dict_size + 1, TDEFL_LZ_DICT_SIZE); - cur_pos = (cur_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; - lookahead_size--; - - if (pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) - { - int n; - d->m_lookahead_pos = lookahead_pos; d->m_lookahead_size = lookahead_size; d->m_dict_size = dict_size; - d->m_total_lz_bytes = total_lz_bytes; d->m_pLZ_code_buf = pLZ_code_buf; d->m_pLZ_flags = pLZ_flags; d->m_num_flags_left = num_flags_left; - if ((n = tdefl_flush_block(d, 0)) != 0) - return (n < 0) ? MZ_FALSE : MZ_TRUE; - total_lz_bytes = d->m_total_lz_bytes; pLZ_code_buf = d->m_pLZ_code_buf; pLZ_flags = d->m_pLZ_flags; num_flags_left = d->m_num_flags_left; - } - } - } - - d->m_lookahead_pos = lookahead_pos; d->m_lookahead_size = lookahead_size; d->m_dict_size = dict_size; - d->m_total_lz_bytes = total_lz_bytes; d->m_pLZ_code_buf = pLZ_code_buf; d->m_pLZ_flags = pLZ_flags; d->m_num_flags_left = num_flags_left; - return MZ_TRUE; -} -#endif // MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN - -static MZ_FORCEINLINE void tdefl_record_literal(tdefl_compressor *d, mz_uint8 lit) -{ - d->m_total_lz_bytes++; - *d->m_pLZ_code_buf++ = lit; - *d->m_pLZ_flags = (mz_uint8)(*d->m_pLZ_flags >> 1); if (--d->m_num_flags_left == 0) { d->m_num_flags_left = 8; d->m_pLZ_flags = d->m_pLZ_code_buf++; } - d->m_huff_count[0][lit]++; -} - -static MZ_FORCEINLINE void tdefl_record_match(tdefl_compressor *d, mz_uint match_len, mz_uint match_dist) -{ - mz_uint32 s0, s1; - - MZ_ASSERT((match_len >= TDEFL_MIN_MATCH_LEN) && (match_dist >= 1) && (match_dist <= TDEFL_LZ_DICT_SIZE)); - - d->m_total_lz_bytes += match_len; - - d->m_pLZ_code_buf[0] = (mz_uint8)(match_len - TDEFL_MIN_MATCH_LEN); - - match_dist -= 1; - d->m_pLZ_code_buf[1] = (mz_uint8)(match_dist & 0xFF); - d->m_pLZ_code_buf[2] = (mz_uint8)(match_dist >> 8); d->m_pLZ_code_buf += 3; - - *d->m_pLZ_flags = (mz_uint8)((*d->m_pLZ_flags >> 1) | 0x80); if (--d->m_num_flags_left == 0) { d->m_num_flags_left = 8; d->m_pLZ_flags = d->m_pLZ_code_buf++; } - - s0 = s_tdefl_small_dist_sym[match_dist & 511]; s1 = s_tdefl_large_dist_sym[(match_dist >> 8) & 127]; - d->m_huff_count[1][(match_dist < 512) ? s0 : s1]++; - - if (match_len >= TDEFL_MIN_MATCH_LEN) d->m_huff_count[0][s_tdefl_len_sym[match_len - TDEFL_MIN_MATCH_LEN]]++; -} - -static mz_bool tdefl_compress_normal(tdefl_compressor *d) -{ - const mz_uint8 *pSrc = d->m_pSrc; size_t src_buf_left = d->m_src_buf_left; - tdefl_flush flush = d->m_flush; - - while ((src_buf_left) || ((flush) && (d->m_lookahead_size))) - { - mz_uint len_to_move, cur_match_dist, cur_match_len, cur_pos; - // Update dictionary and hash chains. Keeps the lookahead size equal to TDEFL_MAX_MATCH_LEN. - if ((d->m_lookahead_size + d->m_dict_size) >= (TDEFL_MIN_MATCH_LEN - 1)) - { - mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK, ins_pos = d->m_lookahead_pos + d->m_lookahead_size - 2; - mz_uint hash = (d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK]; - mz_uint num_bytes_to_process = (mz_uint)MZ_MIN(src_buf_left, TDEFL_MAX_MATCH_LEN - d->m_lookahead_size); - const mz_uint8 *pSrc_end = pSrc + num_bytes_to_process; - src_buf_left -= num_bytes_to_process; - d->m_lookahead_size += num_bytes_to_process; - while (pSrc != pSrc_end) - { - mz_uint8 c = *pSrc++; d->m_dict[dst_pos] = c; if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c; - hash = ((hash << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1); - d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; d->m_hash[hash] = (mz_uint16)(ins_pos); - dst_pos = (dst_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK; ins_pos++; - } - } - else - { - while ((src_buf_left) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) - { - mz_uint8 c = *pSrc++; - mz_uint dst_pos = (d->m_lookahead_pos + d->m_lookahead_size) & TDEFL_LZ_DICT_SIZE_MASK; - src_buf_left--; - d->m_dict[dst_pos] = c; - if (dst_pos < (TDEFL_MAX_MATCH_LEN - 1)) - d->m_dict[TDEFL_LZ_DICT_SIZE + dst_pos] = c; - if ((++d->m_lookahead_size + d->m_dict_size) >= TDEFL_MIN_MATCH_LEN) - { - mz_uint ins_pos = d->m_lookahead_pos + (d->m_lookahead_size - 1) - 2; - mz_uint hash = ((d->m_dict[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] << (TDEFL_LZ_HASH_SHIFT * 2)) ^ (d->m_dict[(ins_pos + 1) & TDEFL_LZ_DICT_SIZE_MASK] << TDEFL_LZ_HASH_SHIFT) ^ c) & (TDEFL_LZ_HASH_SIZE - 1); - d->m_next[ins_pos & TDEFL_LZ_DICT_SIZE_MASK] = d->m_hash[hash]; d->m_hash[hash] = (mz_uint16)(ins_pos); - } - } - } - d->m_dict_size = MZ_MIN(TDEFL_LZ_DICT_SIZE - d->m_lookahead_size, d->m_dict_size); - if ((!flush) && (d->m_lookahead_size < TDEFL_MAX_MATCH_LEN)) - break; - - // Simple lazy/greedy parsing state machine. - len_to_move = 1; cur_match_dist = 0; cur_match_len = d->m_saved_match_len ? d->m_saved_match_len : (TDEFL_MIN_MATCH_LEN - 1); cur_pos = d->m_lookahead_pos & TDEFL_LZ_DICT_SIZE_MASK; - if (d->m_flags & (TDEFL_RLE_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS)) - { - if ((d->m_dict_size) && (!(d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) - { - mz_uint8 c = d->m_dict[(cur_pos - 1) & TDEFL_LZ_DICT_SIZE_MASK]; - cur_match_len = 0; while (cur_match_len < d->m_lookahead_size) { if (d->m_dict[cur_pos + cur_match_len] != c) break; cur_match_len++; } - if (cur_match_len < TDEFL_MIN_MATCH_LEN) cur_match_len = 0; else cur_match_dist = 1; - } - } - else - { - tdefl_find_match(d, d->m_lookahead_pos, d->m_dict_size, d->m_lookahead_size, &cur_match_dist, &cur_match_len); - } - if (((cur_match_len == TDEFL_MIN_MATCH_LEN) && (cur_match_dist >= 8U*1024U)) || (cur_pos == cur_match_dist) || ((d->m_flags & TDEFL_FILTER_MATCHES) && (cur_match_len <= 5))) - { - cur_match_dist = cur_match_len = 0; - } - if (d->m_saved_match_len) - { - if (cur_match_len > d->m_saved_match_len) - { - tdefl_record_literal(d, (mz_uint8)d->m_saved_lit); - if (cur_match_len >= 128) - { - tdefl_record_match(d, cur_match_len, cur_match_dist); - d->m_saved_match_len = 0; len_to_move = cur_match_len; - } - else - { - d->m_saved_lit = d->m_dict[cur_pos]; d->m_saved_match_dist = cur_match_dist; d->m_saved_match_len = cur_match_len; - } - } - else - { - tdefl_record_match(d, d->m_saved_match_len, d->m_saved_match_dist); - len_to_move = d->m_saved_match_len - 1; d->m_saved_match_len = 0; - } - } - else if (!cur_match_dist) - tdefl_record_literal(d, d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]); - else if ((d->m_greedy_parsing) || (d->m_flags & TDEFL_RLE_MATCHES) || (cur_match_len >= 128)) - { - tdefl_record_match(d, cur_match_len, cur_match_dist); - len_to_move = cur_match_len; - } - else - { - d->m_saved_lit = d->m_dict[MZ_MIN(cur_pos, sizeof(d->m_dict) - 1)]; d->m_saved_match_dist = cur_match_dist; d->m_saved_match_len = cur_match_len; - } - // Move the lookahead forward by len_to_move bytes. - d->m_lookahead_pos += len_to_move; - MZ_ASSERT(d->m_lookahead_size >= len_to_move); - d->m_lookahead_size -= len_to_move; - d->m_dict_size = MZ_MIN(d->m_dict_size + len_to_move, TDEFL_LZ_DICT_SIZE); - // Check if it's time to flush the current LZ codes to the internal output buffer. - if ( (d->m_pLZ_code_buf > &d->m_lz_code_buf[TDEFL_LZ_CODE_BUF_SIZE - 8]) || - ( (d->m_total_lz_bytes > 31*1024) && (((((mz_uint)(d->m_pLZ_code_buf - d->m_lz_code_buf) * 115) >> 7) >= d->m_total_lz_bytes) || (d->m_flags & TDEFL_FORCE_ALL_RAW_BLOCKS))) ) - { - int n; - d->m_pSrc = pSrc; d->m_src_buf_left = src_buf_left; - if ((n = tdefl_flush_block(d, 0)) != 0) - return (n < 0) ? MZ_FALSE : MZ_TRUE; - } - } - - d->m_pSrc = pSrc; d->m_src_buf_left = src_buf_left; - return MZ_TRUE; -} - -static tdefl_status tdefl_flush_output_buffer(tdefl_compressor *d) -{ - if (d->m_pIn_buf_size) - { - *d->m_pIn_buf_size = d->m_pSrc - (const mz_uint8 *)d->m_pIn_buf; - } - - if (d->m_pOut_buf_size) - { - size_t n = MZ_MIN(*d->m_pOut_buf_size - d->m_out_buf_ofs, d->m_output_flush_remaining); - memcpy((mz_uint8 *)d->m_pOut_buf + d->m_out_buf_ofs, d->m_output_buf + d->m_output_flush_ofs, n); - d->m_output_flush_ofs += (mz_uint)n; - d->m_output_flush_remaining -= (mz_uint)n; - d->m_out_buf_ofs += n; - - *d->m_pOut_buf_size = d->m_out_buf_ofs; - } - - return (d->m_finished && !d->m_output_flush_remaining) ? TDEFL_STATUS_DONE : TDEFL_STATUS_OKAY; -} - -tdefl_status tdefl_compress(tdefl_compressor *d, const void *pIn_buf, size_t *pIn_buf_size, void *pOut_buf, size_t *pOut_buf_size, tdefl_flush flush) -{ - if (!d) - { - if (pIn_buf_size) *pIn_buf_size = 0; - if (pOut_buf_size) *pOut_buf_size = 0; - return TDEFL_STATUS_BAD_PARAM; - } - - d->m_pIn_buf = pIn_buf; d->m_pIn_buf_size = pIn_buf_size; - d->m_pOut_buf = pOut_buf; d->m_pOut_buf_size = pOut_buf_size; - d->m_pSrc = (const mz_uint8 *)(pIn_buf); d->m_src_buf_left = pIn_buf_size ? *pIn_buf_size : 0; - d->m_out_buf_ofs = 0; - d->m_flush = flush; - - if ( ((d->m_pPut_buf_func != NULL) == ((pOut_buf != NULL) || (pOut_buf_size != NULL))) || (d->m_prev_return_status != TDEFL_STATUS_OKAY) || - (d->m_wants_to_finish && (flush != TDEFL_FINISH)) || (pIn_buf_size && *pIn_buf_size && !pIn_buf) || (pOut_buf_size && *pOut_buf_size && !pOut_buf) ) - { - if (pIn_buf_size) *pIn_buf_size = 0; - if (pOut_buf_size) *pOut_buf_size = 0; - return (d->m_prev_return_status = TDEFL_STATUS_BAD_PARAM); - } - d->m_wants_to_finish |= (flush == TDEFL_FINISH); - - if ((d->m_output_flush_remaining) || (d->m_finished)) - return (d->m_prev_return_status = tdefl_flush_output_buffer(d)); - -#if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN - if (((d->m_flags & TDEFL_MAX_PROBES_MASK) == 1) && - ((d->m_flags & TDEFL_GREEDY_PARSING_FLAG) != 0) && - ((d->m_flags & (TDEFL_FILTER_MATCHES | TDEFL_FORCE_ALL_RAW_BLOCKS | TDEFL_RLE_MATCHES)) == 0)) - { - if (!tdefl_compress_fast(d)) - return d->m_prev_return_status; - } - else -#endif // #if MINIZ_USE_UNALIGNED_LOADS_AND_STORES && MINIZ_LITTLE_ENDIAN - { - if (!tdefl_compress_normal(d)) - return d->m_prev_return_status; - } - - if ((d->m_flags & (TDEFL_WRITE_ZLIB_HEADER | TDEFL_COMPUTE_ADLER32)) && (pIn_buf)) - d->m_adler32 = (mz_uint32)mz_adler32(d->m_adler32, (const mz_uint8 *)pIn_buf, d->m_pSrc - (const mz_uint8 *)pIn_buf); - - if ((flush) && (!d->m_lookahead_size) && (!d->m_src_buf_left) && (!d->m_output_flush_remaining)) - { - if (tdefl_flush_block(d, flush) < 0) - return d->m_prev_return_status; - d->m_finished = (flush == TDEFL_FINISH); - if (flush == TDEFL_FULL_FLUSH) { MZ_CLEAR_OBJ(d->m_hash); MZ_CLEAR_OBJ(d->m_next); d->m_dict_size = 0; } - } - - return (d->m_prev_return_status = tdefl_flush_output_buffer(d)); -} - -tdefl_status tdefl_compress_buffer(tdefl_compressor *d, const void *pIn_buf, size_t in_buf_size, tdefl_flush flush) -{ - MZ_ASSERT(d->m_pPut_buf_func); return tdefl_compress(d, pIn_buf, &in_buf_size, NULL, NULL, flush); -} - -tdefl_status tdefl_init(tdefl_compressor *d, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags) -{ - d->m_pPut_buf_func = pPut_buf_func; d->m_pPut_buf_user = pPut_buf_user; - d->m_flags = (mz_uint)(flags); d->m_max_probes[0] = 1 + ((flags & 0xFFF) + 2) / 3; d->m_greedy_parsing = (flags & TDEFL_GREEDY_PARSING_FLAG) != 0; - d->m_max_probes[1] = 1 + (((flags & 0xFFF) >> 2) + 2) / 3; - if (!(flags & TDEFL_NONDETERMINISTIC_PARSING_FLAG)) MZ_CLEAR_OBJ(d->m_hash); - d->m_lookahead_pos = d->m_lookahead_size = d->m_dict_size = d->m_total_lz_bytes = d->m_lz_code_buf_dict_pos = d->m_bits_in = 0; - d->m_output_flush_ofs = d->m_output_flush_remaining = d->m_finished = d->m_block_index = d->m_bit_buffer = d->m_wants_to_finish = 0; - d->m_pLZ_code_buf = d->m_lz_code_buf + 1; d->m_pLZ_flags = d->m_lz_code_buf; d->m_num_flags_left = 8; - d->m_pOutput_buf = d->m_output_buf; d->m_pOutput_buf_end = d->m_output_buf; d->m_prev_return_status = TDEFL_STATUS_OKAY; - d->m_saved_match_dist = d->m_saved_match_len = d->m_saved_lit = 0; d->m_adler32 = 1; - d->m_pIn_buf = NULL; d->m_pOut_buf = NULL; - d->m_pIn_buf_size = NULL; d->m_pOut_buf_size = NULL; - d->m_flush = TDEFL_NO_FLUSH; d->m_pSrc = NULL; d->m_src_buf_left = 0; d->m_out_buf_ofs = 0; - memset(&d->m_huff_count[0][0], 0, sizeof(d->m_huff_count[0][0]) * TDEFL_MAX_HUFF_SYMBOLS_0); - memset(&d->m_huff_count[1][0], 0, sizeof(d->m_huff_count[1][0]) * TDEFL_MAX_HUFF_SYMBOLS_1); - return TDEFL_STATUS_OKAY; -} - -tdefl_status tdefl_get_prev_return_status(tdefl_compressor *d) -{ - return d->m_prev_return_status; -} - -mz_uint32 tdefl_get_adler32(tdefl_compressor *d) -{ - return d->m_adler32; -} - -mz_bool tdefl_compress_mem_to_output(const void *pBuf, size_t buf_len, tdefl_put_buf_func_ptr pPut_buf_func, void *pPut_buf_user, int flags) -{ - tdefl_compressor *pComp; mz_bool succeeded; if (((buf_len) && (!pBuf)) || (!pPut_buf_func)) return MZ_FALSE; - pComp = (tdefl_compressor*)MZ_MALLOC(sizeof(tdefl_compressor)); if (!pComp) return MZ_FALSE; - succeeded = (tdefl_init(pComp, pPut_buf_func, pPut_buf_user, flags) == TDEFL_STATUS_OKAY); - succeeded = succeeded && (tdefl_compress_buffer(pComp, pBuf, buf_len, TDEFL_FINISH) == TDEFL_STATUS_DONE); - MZ_FREE(pComp); return succeeded; -} - -typedef struct -{ - size_t m_size, m_capacity; - mz_uint8 *m_pBuf; - mz_bool m_expandable; -} tdefl_output_buffer; - -static mz_bool tdefl_output_buffer_putter(const void *pBuf, int len, void *pUser) -{ - tdefl_output_buffer *p = (tdefl_output_buffer *)pUser; - size_t new_size = p->m_size + len; - if (new_size > p->m_capacity) - { - size_t new_capacity = p->m_capacity; mz_uint8 *pNew_buf; if (!p->m_expandable) return MZ_FALSE; - do { new_capacity = MZ_MAX(128U, new_capacity << 1U); } while (new_size > new_capacity); - pNew_buf = (mz_uint8*)MZ_REALLOC(p->m_pBuf, new_capacity); if (!pNew_buf) return MZ_FALSE; - p->m_pBuf = pNew_buf; p->m_capacity = new_capacity; - } - memcpy((mz_uint8*)p->m_pBuf + p->m_size, pBuf, len); p->m_size = new_size; - return MZ_TRUE; -} - -void *tdefl_compress_mem_to_heap(const void *pSrc_buf, size_t src_buf_len, size_t *pOut_len, int flags) -{ - tdefl_output_buffer out_buf; MZ_CLEAR_OBJ(out_buf); - if (!pOut_len) return MZ_FALSE; else *pOut_len = 0; - out_buf.m_expandable = MZ_TRUE; - if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) return NULL; - *pOut_len = out_buf.m_size; return out_buf.m_pBuf; -} - -size_t tdefl_compress_mem_to_mem(void *pOut_buf, size_t out_buf_len, const void *pSrc_buf, size_t src_buf_len, int flags) -{ - tdefl_output_buffer out_buf; MZ_CLEAR_OBJ(out_buf); - if (!pOut_buf) return 0; - out_buf.m_pBuf = (mz_uint8*)pOut_buf; out_buf.m_capacity = out_buf_len; - if (!tdefl_compress_mem_to_output(pSrc_buf, src_buf_len, tdefl_output_buffer_putter, &out_buf, flags)) return 0; - return out_buf.m_size; -} - -#ifndef MINIZ_NO_ZLIB_APIS -static const mz_uint s_tdefl_num_probes[11] = { 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500 }; - -// level may actually range from [0,10] (10 is a "hidden" max level, where we want a bit more compression and it's fine if throughput to fall off a cliff on some files). -mz_uint tdefl_create_comp_flags_from_zip_params(int level, int window_bits, int strategy) -{ - mz_uint comp_flags = s_tdefl_num_probes[(level >= 0) ? MZ_MIN(10, level) : MZ_DEFAULT_LEVEL] | ((level <= 3) ? TDEFL_GREEDY_PARSING_FLAG : 0); - if (window_bits > 0) comp_flags |= TDEFL_WRITE_ZLIB_HEADER; - - if (!level) comp_flags |= TDEFL_FORCE_ALL_RAW_BLOCKS; - else if (strategy == MZ_FILTERED) comp_flags |= TDEFL_FILTER_MATCHES; - else if (strategy == MZ_HUFFMAN_ONLY) comp_flags &= ~TDEFL_MAX_PROBES_MASK; - else if (strategy == MZ_FIXED) comp_flags |= TDEFL_FORCE_ALL_STATIC_BLOCKS; - else if (strategy == MZ_RLE) comp_flags |= TDEFL_RLE_MATCHES; - - return comp_flags; -} -#endif //MINIZ_NO_ZLIB_APIS - -#ifdef _MSC_VER -#pragma warning (push) -#pragma warning (disable:4204) // nonstandard extension used : non-constant aggregate initializer (also supported by GNU C and C99, so no big deal) -#endif - -// Simple PNG writer function by Alex Evans, 2011. Released into the public domain: https://gist.github.com/908299, more context at -// http://altdevblogaday.org/2011/04/06/a-smaller-jpg-encoder/. -// This is actually a modification of Alex's original code so PNG files generated by this function pass pngcheck. -void *tdefl_write_image_to_png_file_in_memory_ex(const void *pImage, int w, int h, int num_chans, size_t *pLen_out, mz_uint level, mz_bool flip) -{ - // Using a local copy of this array here in case MINIZ_NO_ZLIB_APIS was defined. - static const mz_uint s_tdefl_png_num_probes[11] = { 0, 1, 6, 32, 16, 32, 128, 256, 512, 768, 1500 }; - tdefl_compressor *pComp = (tdefl_compressor *)MZ_MALLOC(sizeof(tdefl_compressor)); tdefl_output_buffer out_buf; int i, bpl = w * num_chans, y, z; mz_uint32 c; *pLen_out = 0; - if (!pComp) return NULL; - MZ_CLEAR_OBJ(out_buf); out_buf.m_expandable = MZ_TRUE; out_buf.m_capacity = 57+MZ_MAX(64, (1+bpl)*h); if (NULL == (out_buf.m_pBuf = (mz_uint8*)MZ_MALLOC(out_buf.m_capacity))) { MZ_FREE(pComp); return NULL; } - // write dummy header - for (z = 41; z; --z) tdefl_output_buffer_putter(&z, 1, &out_buf); - // compress image data - tdefl_init(pComp, tdefl_output_buffer_putter, &out_buf, s_tdefl_png_num_probes[MZ_MIN(10, level)] | TDEFL_WRITE_ZLIB_HEADER | (level <= 3 ? TDEFL_GREEDY_PARSING_FLAG : 0)); - for (y = 0; y < h; ++y) { tdefl_compress_buffer(pComp, &z, 1, TDEFL_NO_FLUSH); tdefl_compress_buffer(pComp, (mz_uint8*)pImage + (flip ? (h - 1 - y) : y) * bpl, bpl, TDEFL_NO_FLUSH); } - if (tdefl_compress_buffer(pComp, NULL, 0, TDEFL_FINISH) != TDEFL_STATUS_DONE) { MZ_FREE(pComp); MZ_FREE(out_buf.m_pBuf); return NULL; } - // write real header - *pLen_out = out_buf.m_size-41; - { - static const mz_uint8 chans[] = {0x00, 0x00, 0x04, 0x02, 0x06}; - mz_uint8 pnghdr[41]={0x89,0x50,0x4e,0x47,0x0d,0x0a,0x1a,0x0a,0x00,0x00,0x00,0x0d,0x49,0x48,0x44,0x52, - 0,0,(mz_uint8)(w>>8),(mz_uint8)w,0,0,(mz_uint8)(h>>8),(mz_uint8)h,8,chans[num_chans],0,0,0,0,0,0,0, - (mz_uint8)(*pLen_out>>24),(mz_uint8)(*pLen_out>>16),(mz_uint8)(*pLen_out>>8),(mz_uint8)*pLen_out,0x49,0x44,0x41,0x54}; - c=(mz_uint32)mz_crc32(MZ_CRC32_INIT,pnghdr+12,17); for (i=0; i<4; ++i, c<<=8) ((mz_uint8*)(pnghdr+29))[i]=(mz_uint8)(c>>24); - memcpy(out_buf.m_pBuf, pnghdr, 41); - } - // write footer (IDAT CRC-32, followed by IEND chunk) - if (!tdefl_output_buffer_putter("\0\0\0\0\0\0\0\0\x49\x45\x4e\x44\xae\x42\x60\x82", 16, &out_buf)) { *pLen_out = 0; MZ_FREE(pComp); MZ_FREE(out_buf.m_pBuf); return NULL; } - c = (mz_uint32)mz_crc32(MZ_CRC32_INIT,out_buf.m_pBuf+41-4, *pLen_out+4); for (i=0; i<4; ++i, c<<=8) (out_buf.m_pBuf+out_buf.m_size-16)[i] = (mz_uint8)(c >> 24); - // compute final size of file, grab compressed data buffer and return - *pLen_out += 57; MZ_FREE(pComp); return out_buf.m_pBuf; -} -void *tdefl_write_image_to_png_file_in_memory(const void *pImage, int w, int h, int num_chans, size_t *pLen_out) -{ - // Level 6 corresponds to TDEFL_DEFAULT_MAX_PROBES or MZ_DEFAULT_LEVEL (but we can't depend on MZ_DEFAULT_LEVEL being available in case the zlib API's where #defined out) - return tdefl_write_image_to_png_file_in_memory_ex(pImage, w, h, num_chans, pLen_out, 6, MZ_FALSE); -} - -#ifdef _MSC_VER -#pragma warning (pop) -#endif - -} // namespace buminiz - -#endif // MINIZ_HEADER_FILE_ONLY - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_ocl_kernels.h b/WickedEngine/Utility/basis_universal/encoder/basisu_ocl_kernels.h deleted file mode 100644 index 46db61bf1..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_ocl_kernels.h +++ /dev/null @@ -1,1439 +0,0 @@ -unsigned char ocl_kernels_cl[] = { - 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0x74, 0x70, 0x75, 0x74, 0x5f, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x73, 0x5b, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x5f, 0x69, 0x6e, 0x64, 0x65, 0x78, 0x5d, 0x20, 0x3d, 0x20, 0x6f, 0x75, 0x74, 0x70, 0x75, - 0x74, 0x5f, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x3b, 0x0d, 0x0a, 0x7d, 0x0d, 0x0a, 0x0d, 0x0a -}; -unsigned int ocl_kernels_cl_len = 45935; diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_opencl.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_opencl.cpp deleted file mode 100644 index 81e3090a2..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_opencl.cpp +++ /dev/null @@ -1,1332 +0,0 @@ -// basisu_opencl.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_opencl.h" - -// If 1, the kernel source code will come from encoders/ocl_kernels.h. Otherwise, it will be read from the "ocl_kernels.cl" file in the current directory (for development). -#define BASISU_USE_OCL_KERNELS_HEADER (1) -#define BASISU_OCL_KERNELS_FILENAME "ocl_kernels.cl" - -#if BASISU_SUPPORT_OPENCL - -#include "basisu_enc.h" - -// We only use OpenCL v1.2 or less. -#define CL_TARGET_OPENCL_VERSION 120 - -#ifdef __APPLE__ -#include -#else -#include -#endif - -#define BASISU_OPENCL_ASSERT_ON_ANY_ERRORS (1) - -namespace basisu -{ -#if BASISU_USE_OCL_KERNELS_HEADER -#include "basisu_ocl_kernels.h" -#endif - - static void ocl_error_printf(const char* pFmt, ...) - { - va_list args; - va_start(args, pFmt); - error_vprintf(pFmt, args); - va_end(args); - -#if BASISU_OPENCL_ASSERT_ON_ANY_ERRORS - assert(0); -#endif - } - - class ocl - { - public: - ocl() - { - memset(&m_dev_fp_config, 0, sizeof(m_dev_fp_config)); - - m_ocl_mutex.lock(); - m_ocl_mutex.unlock(); - } - - ~ocl() - { - } - - bool is_initialized() const { return m_device_id != nullptr; } - - cl_device_id get_device_id() const { return m_device_id; } - cl_context get_context() const { return m_context; } - cl_command_queue get_command_queue() { return m_command_queue; } - cl_program get_program() const { return m_program; } - - bool init(bool force_serialization) - { - deinit(); - - interval_timer tm; - tm.start(); - - cl_uint num_platforms = 0; - cl_int ret = clGetPlatformIDs(0, NULL, &num_platforms); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init: clGetPlatformIDs() failed with %i\n", ret); - return false; - } - - if ((!num_platforms) || (num_platforms > INT_MAX)) - { - ocl_error_printf("ocl::init: clGetPlatformIDs() returned an invalid number of num_platforms\n"); - return false; - } - - std::vector platforms(num_platforms); - - ret = clGetPlatformIDs(num_platforms, platforms.data(), NULL); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init: clGetPlatformIDs() failed\n"); - return false; - } - - cl_uint num_devices = 0; - ret = clGetDeviceIDs(platforms[0], CL_DEVICE_TYPE_GPU, 1, &m_device_id, &num_devices); - - if (ret == CL_DEVICE_NOT_FOUND) - { - ocl_error_printf("ocl::init: Couldn't get any GPU device ID's, trying CL_DEVICE_TYPE_CPU\n"); - - ret = clGetDeviceIDs(platforms[0], CL_DEVICE_TYPE_CPU, 1, &m_device_id, &num_devices); - } - - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init: Unable to get any device ID's\n"); - - m_device_id = nullptr; - return false; - } - - ret = clGetDeviceInfo(m_device_id, - CL_DEVICE_SINGLE_FP_CONFIG, - sizeof(m_dev_fp_config), - &m_dev_fp_config, - nullptr); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init: clGetDeviceInfo() failed\n"); - return false; - } - - char plat_vers[256]; - size_t rv = 0; - ret = clGetPlatformInfo(platforms[0], CL_PLATFORM_VERSION, sizeof(plat_vers), plat_vers, &rv); - if (ret == CL_SUCCESS) - printf("OpenCL platform version: \"%s\"\n", plat_vers); - - // Serialize CL calls with the AMD driver to avoid lockups when multiple command queues per thread are used. This sucks, but what can we do? - m_use_mutex = (strstr(plat_vers, "AMD") != nullptr) || force_serialization; - - printf("Serializing OpenCL calls across threads: %u\n", (uint32_t)m_use_mutex); - - m_context = clCreateContext(nullptr, 1, &m_device_id, nullptr, nullptr, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init: clCreateContext() failed\n"); - - m_device_id = nullptr; - m_context = nullptr; - return false; - } - - m_command_queue = clCreateCommandQueue(m_context, m_device_id, 0, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init: clCreateCommandQueue() failed\n"); - - deinit(); - return false; - } - - printf("OpenCL init time: %3.3f secs\n", tm.get_elapsed_secs()); - - return true; - } - - bool deinit() - { - if (m_program) - { - clReleaseProgram(m_program); - m_program = nullptr; - } - - if (m_command_queue) - { - clReleaseCommandQueue(m_command_queue); - m_command_queue = nullptr; - } - - if (m_context) - { - clReleaseContext(m_context); - m_context = nullptr; - } - - m_device_id = nullptr; - - return true; - } - - cl_command_queue create_command_queue() - { - cl_serializer serializer(this); - - cl_int ret = 0; - cl_command_queue p = clCreateCommandQueue(m_context, m_device_id, 0, &ret); - if (ret != CL_SUCCESS) - return nullptr; - - return p; - } - - void destroy_command_queue(cl_command_queue p) - { - if (p) - { - cl_serializer serializer(this); - - clReleaseCommandQueue(p); - } - } - - bool init_program(const char* pSrc, size_t src_size) - { - cl_int ret; - - if (m_program != nullptr) - { - clReleaseProgram(m_program); - m_program = nullptr; - } - - m_program = clCreateProgramWithSource(m_context, 1, (const char**)&pSrc, (const size_t*)&src_size, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init_program: clCreateProgramWithSource() failed!\n"); - return false; - } - - std::string options; - if (m_dev_fp_config & CL_FP_CORRECTLY_ROUNDED_DIVIDE_SQRT) - { - options += "-cl-fp32-correctly-rounded-divide-sqrt"; - } - - options += " -cl-std=CL1.2"; - //options += " -cl-opt-disable"; - //options += " -cl-mad-enable"; - //options += " -cl-fast-relaxed-math"; - - ret = clBuildProgram(m_program, 1, &m_device_id, - options.size() ? options.c_str() : nullptr, // options - nullptr, // notify - nullptr); // user_data - - if (ret != CL_SUCCESS) - { - const cl_int build_program_result = ret; - - size_t ret_val_size; - ret = clGetProgramBuildInfo(m_program, m_device_id, CL_PROGRAM_BUILD_LOG, 0, NULL, &ret_val_size); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::init_program: clGetProgramBuildInfo() failed!\n"); - return false; - } - - std::vector build_log(ret_val_size + 1); - - ret = clGetProgramBuildInfo(m_program, m_device_id, CL_PROGRAM_BUILD_LOG, ret_val_size, build_log.data(), NULL); - - ocl_error_printf("\nclBuildProgram() failed with error %i:\n%s", build_program_result, build_log.data()); - - return false; - } - - return true; - } - - cl_kernel create_kernel(const char* pName) - { - if (!m_program) - return nullptr; - - cl_serializer serializer(this); - - cl_int ret; - cl_kernel kernel = clCreateKernel(m_program, pName, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::create_kernel: clCreateKernel() failed!\n"); - return nullptr; - } - - return kernel; - } - - bool destroy_kernel(cl_kernel k) - { - if (k) - { - cl_serializer serializer(this); - - cl_int ret = clReleaseKernel(k); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::destroy_kernel: clReleaseKernel() failed!\n"); - return false; - } - } - return true; - } - - cl_mem alloc_read_buffer(size_t size) - { - cl_serializer serializer(this); - - cl_int ret; - cl_mem obj = clCreateBuffer(m_context, CL_MEM_READ_ONLY, size, NULL, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::alloc_read_buffer: clCreateBuffer() failed!\n"); - return nullptr; - } - - return obj; - } - - cl_mem alloc_and_init_read_buffer(cl_command_queue command_queue, const void *pInit, size_t size) - { - cl_serializer serializer(this); - - cl_int ret; - cl_mem obj = clCreateBuffer(m_context, CL_MEM_READ_ONLY, size, NULL, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::alloc_and_init_read_buffer: clCreateBuffer() failed!\n"); - return nullptr; - } - -#if 0 - if (!write_to_buffer(command_queue, obj, pInit, size)) - { - destroy_buffer(obj); - return nullptr; - } -#else - ret = clEnqueueWriteBuffer(command_queue, obj, CL_TRUE, 0, size, pInit, 0, NULL, NULL); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::alloc_and_init_read_buffer: clEnqueueWriteBuffer() failed!\n"); - return nullptr; - } -#endif - - return obj; - } - - cl_mem alloc_write_buffer(size_t size) - { - cl_serializer serializer(this); - - cl_int ret; - cl_mem obj = clCreateBuffer(m_context, CL_MEM_WRITE_ONLY, size, NULL, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::alloc_write_buffer: clCreateBuffer() failed!\n"); - return nullptr; - } - - return obj; - } - - bool destroy_buffer(cl_mem buf) - { - if (buf) - { - cl_serializer serializer(this); - - cl_int ret = clReleaseMemObject(buf); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::destroy_buffer: clReleaseMemObject() failed!\n"); - return false; - } - } - - return true; - } - - bool write_to_buffer(cl_command_queue command_queue, cl_mem clmem, const void* d, const size_t m) - { - cl_serializer serializer(this); - - cl_int ret = clEnqueueWriteBuffer(command_queue, clmem, CL_TRUE, 0, m, d, 0, NULL, NULL); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::write_to_buffer: clEnqueueWriteBuffer() failed!\n"); - return false; - } - - return true; - } - - bool read_from_buffer(cl_command_queue command_queue, const cl_mem clmem, void* d, size_t m) - { - cl_serializer serializer(this); - - cl_int ret = clEnqueueReadBuffer(command_queue, clmem, CL_TRUE, 0, m, d, 0, NULL, NULL); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::read_from_buffer: clEnqueueReadBuffer() failed!\n"); - return false; - } - - return true; - } - - cl_mem create_read_image_u8(uint32_t width, uint32_t height, const void* pPixels, uint32_t bytes_per_pixel, bool normalized) - { - cl_image_format fmt = get_image_format(bytes_per_pixel, normalized); - - cl_image_desc desc; - memset(&desc, 0, sizeof(desc)); - desc.image_type = CL_MEM_OBJECT_IMAGE2D; - desc.image_width = width; - desc.image_height = height; - desc.image_row_pitch = width * bytes_per_pixel; - - cl_serializer serializer(this); - - cl_int ret; - cl_mem img = clCreateImage(m_context, CL_MEM_READ_ONLY | CL_MEM_COPY_HOST_PTR, &fmt, &desc, (void*)pPixels, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::create_read_image_u8: clCreateImage() failed!\n"); - return nullptr; - } - - return img; - } - - cl_mem create_write_image_u8(uint32_t width, uint32_t height, uint32_t bytes_per_pixel, bool normalized) - { - cl_image_format fmt = get_image_format(bytes_per_pixel, normalized); - - cl_image_desc desc; - memset(&desc, 0, sizeof(desc)); - desc.image_type = CL_MEM_OBJECT_IMAGE2D; - desc.image_width = width; - desc.image_height = height; - - cl_serializer serializer(this); - - cl_int ret; - cl_mem img = clCreateImage(m_context, CL_MEM_WRITE_ONLY, &fmt, &desc, nullptr, &ret); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::create_write_image_u8: clCreateImage() failed!\n"); - return nullptr; - } - - return img; - } - - bool read_from_image(cl_command_queue command_queue, cl_mem img, void* pPixels, uint32_t ofs_x, uint32_t ofs_y, uint32_t width, uint32_t height) - { - cl_serializer serializer(this); - - size_t origin[3] = { ofs_x, ofs_y, 0 }, region[3] = { width, height, 1 }; - - cl_int err = clEnqueueReadImage(command_queue, img, CL_TRUE, origin, region, 0, 0, pPixels, 0, NULL, NULL); - if (err != CL_SUCCESS) - { - ocl_error_printf("ocl::read_from_image: clEnqueueReadImage() failed!\n"); - return false; - } - - return true; - } - - bool run_1D(cl_command_queue command_queue, const cl_kernel kernel, size_t num_items) - { - cl_serializer serializer(this); - - cl_int ret = clEnqueueNDRangeKernel(command_queue, kernel, - 1, // work_dim - nullptr, // global_work_offset - &num_items, // global_work_size - nullptr, // local_work_size - 0, // num_events_in_wait_list - nullptr, // event_wait_list - nullptr // event - ); - - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::run_1D: clEnqueueNDRangeKernel() failed!\n"); - return false; - } - - return true; - } - - bool run_2D(cl_command_queue command_queue, const cl_kernel kernel, size_t width, size_t height) - { - cl_serializer serializer(this); - - size_t num_global_items[2] = { width, height }; - //size_t num_local_items[2] = { 1, 1 }; - - cl_int ret = clEnqueueNDRangeKernel(command_queue, kernel, - 2, // work_dim - nullptr, // global_work_offset - num_global_items, // global_work_size - nullptr, // local_work_size - 0, // num_events_in_wait_list - nullptr, // event_wait_list - nullptr // event - ); - - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::run_2D: clEnqueueNDRangeKernel() failed!\n"); - return false; - } - - return true; - } - - bool run_2D(cl_command_queue command_queue, const cl_kernel kernel, size_t ofs_x, size_t ofs_y, size_t width, size_t height) - { - cl_serializer serializer(this); - - size_t global_ofs[2] = { ofs_x, ofs_y }; - size_t num_global_items[2] = { width, height }; - //size_t num_local_items[2] = { 1, 1 }; - - cl_int ret = clEnqueueNDRangeKernel(command_queue, kernel, - 2, // work_dim - global_ofs, // global_work_offset - num_global_items, // global_work_size - nullptr, // local_work_size - 0, // num_events_in_wait_list - nullptr, // event_wait_list - nullptr // event - ); - - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::run_2D: clEnqueueNDRangeKernel() failed!\n"); - return false; - } - - return true; - } - - void flush(cl_command_queue command_queue) - { - cl_serializer serializer(this); - - clFlush(command_queue); - clFinish(command_queue); - } - - template - bool set_kernel_arg(cl_kernel kernel, uint32_t index, const T& obj) - { - cl_serializer serializer(this); - - cl_int ret = clSetKernelArg(kernel, index, sizeof(T), (void*)&obj); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::set_kernel_arg: clSetKernelArg() failed!\n"); - return false; - } - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1) - { - cl_serializer serializer(this); - - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); - if (ret != CL_SUCCESS) - { - ocl_error_printf("ocl::set_kernel_arg: clSetKernelArg() failed!\n"); - return false; - } - return true; - } - -#define BASISU_CHECK_ERR if (ret != CL_SUCCESS) { ocl_error_printf("ocl::set_kernel_args: clSetKernelArg() failed!\n"); return false; } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2, const V& obj3) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 2, sizeof(V), (void*)&obj3); BASISU_CHECK_ERR - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2, const V& obj3, const W& obj4) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 2, sizeof(V), (void*)&obj3); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 3, sizeof(W), (void*)&obj4); BASISU_CHECK_ERR - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2, const V& obj3, const W& obj4, const X& obj5) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 2, sizeof(V), (void*)&obj3); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 3, sizeof(W), (void*)&obj4); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 4, sizeof(X), (void*)&obj5); BASISU_CHECK_ERR - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2, const V& obj3, const W& obj4, const X& obj5, const Y& obj6) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 2, sizeof(V), (void*)&obj3); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 3, sizeof(W), (void*)&obj4); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 4, sizeof(X), (void*)&obj5); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 5, sizeof(Y), (void*)&obj6); BASISU_CHECK_ERR - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2, const V& obj3, const W& obj4, const X& obj5, const Y& obj6, const Z& obj7) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 2, sizeof(V), (void*)&obj3); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 3, sizeof(W), (void*)&obj4); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 4, sizeof(X), (void*)&obj5); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 5, sizeof(Y), (void*)&obj6); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 6, sizeof(Z), (void*)&obj7); BASISU_CHECK_ERR - return true; - } - - template - bool set_kernel_args(cl_kernel kernel, const T& obj1, const U& obj2, const V& obj3, const W& obj4, const X& obj5, const Y& obj6, const Z& obj7, const A& obj8) - { - cl_serializer serializer(this); - cl_int ret = clSetKernelArg(kernel, 0, sizeof(T), (void*)&obj1); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 1, sizeof(U), (void*)&obj2); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 2, sizeof(V), (void*)&obj3); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 3, sizeof(W), (void*)&obj4); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 4, sizeof(X), (void*)&obj5); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 5, sizeof(Y), (void*)&obj6); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 6, sizeof(Z), (void*)&obj7); BASISU_CHECK_ERR - ret = clSetKernelArg(kernel, 7, sizeof(A), (void*)&obj8); BASISU_CHECK_ERR - return true; - } -#undef BASISU_CHECK_ERR - - private: - cl_device_id m_device_id = nullptr; - cl_context m_context = nullptr; - cl_command_queue m_command_queue = nullptr; - cl_program m_program = nullptr; - cl_device_fp_config m_dev_fp_config; - - bool m_use_mutex = false; - std::mutex m_ocl_mutex; - - // This helper object is used to optionally serialize all calls to the CL driver after initialization. - // Currently this is only used to work around race conditions in the Windows AMD driver. - struct cl_serializer - { - inline cl_serializer(const cl_serializer&); - cl_serializer& operator= (const cl_serializer&); - - inline cl_serializer(ocl *p) : m_p(p) - { - if (m_p->m_use_mutex) - m_p->m_ocl_mutex.lock(); - } - - inline ~cl_serializer() - { - if (m_p->m_use_mutex) - m_p->m_ocl_mutex.unlock(); - } - - private: - ocl* m_p; - }; - - cl_image_format get_image_format(uint32_t bytes_per_pixel, bool normalized) - { - cl_image_format fmt; - switch (bytes_per_pixel) - { - case 1: fmt.image_channel_order = CL_LUMINANCE; break; - case 2: fmt.image_channel_order = CL_RG; break; - case 3: fmt.image_channel_order = CL_RGB; break; - case 4: fmt.image_channel_order = CL_RGBA; break; - default: assert(0); fmt.image_channel_order = CL_LUMINANCE; break; - } - - fmt.image_channel_data_type = normalized ? CL_UNORM_INT8 : CL_UNSIGNED_INT8; - return fmt; - } - }; - - // Library blobal state - ocl g_ocl; - - bool opencl_init(bool force_serialization) - { - if (g_ocl.is_initialized()) - { - assert(0); - return false; - } - - if (!g_ocl.init(force_serialization)) - { - ocl_error_printf("opencl_init: Failed initializing OpenCL\n"); - return false; - } - - const char* pKernel_src = nullptr; - size_t kernel_src_size = 0; - uint8_vec kernel_src; - -#if BASISU_USE_OCL_KERNELS_HEADER - pKernel_src = reinterpret_cast(ocl_kernels_cl); - kernel_src_size = ocl_kernels_cl_len; -#else - if (!read_file_to_vec(BASISU_OCL_KERNELS_FILENAME, kernel_src)) - { - ocl_error_printf("opencl_init: Cannot read OpenCL kernel source file \"%s\"\n", BASISU_OCL_KERNELS_FILENAME); - g_ocl.deinit(); - return false; - } - - pKernel_src = (char*)kernel_src.data(); - kernel_src_size = kernel_src.size(); -#endif - - if (!kernel_src_size) - { - ocl_error_printf("opencl_init: Invalid OpenCL kernel source file \"%s\"\n", BASISU_OCL_KERNELS_FILENAME); - g_ocl.deinit(); - return false; - } - - if (!g_ocl.init_program(pKernel_src, kernel_src_size)) - { - ocl_error_printf("opencl_init: Failed compiling OpenCL program\n"); - g_ocl.deinit(); - return false; - } - - printf("OpenCL support initialized successfully\n"); - - return true; - } - - void opencl_deinit() - { - g_ocl.deinit(); - } - - bool opencl_is_available() - { - return g_ocl.is_initialized(); - } - - struct opencl_context - { - uint32_t m_ocl_total_pixel_blocks; - cl_mem m_ocl_pixel_blocks; - - cl_command_queue m_command_queue; - - cl_kernel m_ocl_encode_etc1s_blocks_kernel; - cl_kernel m_ocl_refine_endpoint_clusterization_kernel; - cl_kernel m_ocl_encode_etc1s_from_pixel_cluster_kernel; - cl_kernel m_ocl_find_optimal_selector_clusters_for_each_block_kernel; - cl_kernel m_ocl_determine_selectors_kernel; - }; - - opencl_context_ptr opencl_create_context() - { - if (!opencl_is_available()) - { - ocl_error_printf("opencl_create_context: OpenCL not initialized\n"); - assert(0); - return nullptr; - } - - interval_timer tm; - tm.start(); - - opencl_context* pContext = static_cast(calloc(sizeof(opencl_context), 1)); - if (!pContext) - return nullptr; - - // To avoid driver bugs in some drivers - serialize this. Likely not necessary, we don't know. - // https://community.intel.com/t5/OpenCL-for-CPU/Bug-report-clCreateKernelsInProgram-is-not-thread-safe/td-p/1159771 - - pContext->m_command_queue = g_ocl.create_command_queue(); - if (!pContext->m_command_queue) - { - ocl_error_printf("opencl_create_context: Failed creating OpenCL command queue!\n"); - opencl_destroy_context(pContext); - return nullptr; - } - - pContext->m_ocl_encode_etc1s_blocks_kernel = g_ocl.create_kernel("encode_etc1s_blocks"); - if (!pContext->m_ocl_encode_etc1s_blocks_kernel) - { - ocl_error_printf("opencl_create_context: Failed creating OpenCL kernel encode_etc1s_block\n"); - opencl_destroy_context(pContext); - return nullptr; - } - - pContext->m_ocl_refine_endpoint_clusterization_kernel = g_ocl.create_kernel("refine_endpoint_clusterization"); - if (!pContext->m_ocl_refine_endpoint_clusterization_kernel) - { - ocl_error_printf("opencl_create_context: Failed creating OpenCL kernel refine_endpoint_clusterization\n"); - opencl_destroy_context(pContext); - return nullptr; - } - - pContext->m_ocl_encode_etc1s_from_pixel_cluster_kernel = g_ocl.create_kernel("encode_etc1s_from_pixel_cluster"); - if (!pContext->m_ocl_encode_etc1s_from_pixel_cluster_kernel) - { - ocl_error_printf("opencl_create_context: Failed creating OpenCL kernel encode_etc1s_from_pixel_cluster\n"); - opencl_destroy_context(pContext); - return nullptr; - } - - pContext->m_ocl_find_optimal_selector_clusters_for_each_block_kernel = g_ocl.create_kernel("find_optimal_selector_clusters_for_each_block"); - if (!pContext->m_ocl_find_optimal_selector_clusters_for_each_block_kernel) - { - ocl_error_printf("opencl_create_context: Failed creating OpenCL kernel find_optimal_selector_clusters_for_each_block\n"); - opencl_destroy_context(pContext); - return nullptr; - } - - pContext->m_ocl_determine_selectors_kernel = g_ocl.create_kernel("determine_selectors"); - if (!pContext->m_ocl_determine_selectors_kernel) - { - ocl_error_printf("opencl_create_context: Failed creating OpenCL kernel determine_selectors\n"); - opencl_destroy_context(pContext); - return nullptr; - } - - debug_printf("opencl_create_context: Elapsed time: %f secs\n", tm.get_elapsed_secs()); - - return pContext; - } - - void opencl_destroy_context(opencl_context_ptr pContext) - { - if (!pContext) - return; - - interval_timer tm; - tm.start(); - - g_ocl.destroy_buffer(pContext->m_ocl_pixel_blocks); - - g_ocl.destroy_kernel(pContext->m_ocl_determine_selectors_kernel); - g_ocl.destroy_kernel(pContext->m_ocl_find_optimal_selector_clusters_for_each_block_kernel); - g_ocl.destroy_kernel(pContext->m_ocl_encode_etc1s_from_pixel_cluster_kernel); - g_ocl.destroy_kernel(pContext->m_ocl_encode_etc1s_blocks_kernel); - g_ocl.destroy_kernel(pContext->m_ocl_refine_endpoint_clusterization_kernel); - - g_ocl.destroy_command_queue(pContext->m_command_queue); - - memset(pContext, 0, sizeof(opencl_context)); - - free(pContext); - - debug_printf("opencl_destroy_context: Elapsed time: %f secs\n", tm.get_elapsed_secs()); - } - -#pragma pack(push, 1) - struct cl_encode_etc1s_param_struct - { - int m_total_blocks; - int m_perceptual; - int m_total_perms; - }; -#pragma pack(pop) - - bool opencl_set_pixel_blocks(opencl_context_ptr pContext, uint32_t total_blocks, const cl_pixel_block* pPixel_blocks) - { - if (!opencl_is_available()) - return false; - - if (pContext->m_ocl_pixel_blocks) - { - g_ocl.destroy_buffer(pContext->m_ocl_pixel_blocks); - pContext->m_ocl_pixel_blocks = nullptr; - } - - pContext->m_ocl_pixel_blocks = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pPixel_blocks, sizeof(cl_pixel_block) * total_blocks); - if (!pContext->m_ocl_pixel_blocks) - return false; - - pContext->m_ocl_total_pixel_blocks = total_blocks; - - return true; - } - - bool opencl_encode_etc1s_blocks(opencl_context_ptr pContext, etc_block* pOutput_blocks, bool perceptual, uint32_t total_perms) - { - if (!opencl_is_available()) - return false; - - interval_timer tm; - tm.start(); - - assert(pContext->m_ocl_pixel_blocks); - if (!pContext->m_ocl_pixel_blocks) - return false; - - cl_encode_etc1s_param_struct ps; - ps.m_total_blocks = pContext->m_ocl_total_pixel_blocks; - ps.m_perceptual = perceptual; - ps.m_total_perms = total_perms; - - bool status = false; - - cl_mem vars = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue , &ps, sizeof(ps)); - cl_mem block_buf = g_ocl.alloc_write_buffer(sizeof(etc_block) * pContext->m_ocl_total_pixel_blocks); - - if (!vars || !block_buf) - goto exit; - - if (!g_ocl.set_kernel_args(pContext->m_ocl_encode_etc1s_blocks_kernel, vars, pContext->m_ocl_pixel_blocks, block_buf)) - goto exit; - - if (!g_ocl.run_2D(pContext->m_command_queue, pContext->m_ocl_encode_etc1s_blocks_kernel, pContext->m_ocl_total_pixel_blocks, 1)) - goto exit; - - if (!g_ocl.read_from_buffer(pContext->m_command_queue, block_buf, pOutput_blocks, pContext->m_ocl_total_pixel_blocks * sizeof(etc_block))) - goto exit; - - status = true; - - debug_printf("opencl_encode_etc1s_blocks: Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - -exit: - g_ocl.destroy_buffer(block_buf); - g_ocl.destroy_buffer(vars); - - return status; - } - - bool opencl_encode_etc1s_pixel_clusters( - opencl_context_ptr pContext, - etc_block* pOutput_blocks, - uint32_t total_clusters, - const cl_pixel_cluster* pClusters, - uint64_t total_pixels, - const color_rgba* pPixels, const uint32_t* pPixel_weights, - bool perceptual, uint32_t total_perms) - { - if (!opencl_is_available()) - return false; - - interval_timer tm; - tm.start(); - - cl_encode_etc1s_param_struct ps; - ps.m_total_blocks = total_clusters; - ps.m_perceptual = perceptual; - ps.m_total_perms = total_perms; - - bool status = false; - - if (sizeof(size_t) == sizeof(uint32_t)) - { - if ( ((sizeof(cl_pixel_cluster) * total_clusters) > UINT32_MAX) || - ((sizeof(color_rgba) * total_pixels) > UINT32_MAX) || - ((sizeof(uint32_t) * total_pixels) > UINT32_MAX) ) - { - return false; - } - } - - cl_mem vars = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue , &ps, sizeof(ps)); - cl_mem input_clusters = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pClusters, (size_t)(sizeof(cl_pixel_cluster) * total_clusters)); - cl_mem input_pixels = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pPixels, (size_t)(sizeof(color_rgba) * total_pixels)); - cl_mem weights_buf = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pPixel_weights, (size_t)(sizeof(uint32_t) * total_pixels)); - cl_mem block_buf = g_ocl.alloc_write_buffer(sizeof(etc_block) * total_clusters); - - if (!vars || !input_clusters || !input_pixels || !weights_buf || !block_buf) - goto exit; - - if (!g_ocl.set_kernel_args(pContext->m_ocl_encode_etc1s_from_pixel_cluster_kernel, vars, input_clusters, input_pixels, weights_buf, block_buf)) - goto exit; - - if (!g_ocl.run_2D(pContext->m_command_queue, pContext->m_ocl_encode_etc1s_from_pixel_cluster_kernel, total_clusters, 1)) - goto exit; - - if (!g_ocl.read_from_buffer(pContext->m_command_queue, block_buf, pOutput_blocks, sizeof(etc_block) * total_clusters)) - goto exit; - - status = true; - - debug_printf("opencl_encode_etc1s_pixel_clusters: Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - - exit: - g_ocl.destroy_buffer(block_buf); - g_ocl.destroy_buffer(weights_buf); - g_ocl.destroy_buffer(input_pixels); - g_ocl.destroy_buffer(input_clusters); - g_ocl.destroy_buffer(vars); - - return status; - } - -#pragma pack(push, 1) - struct cl_rec_param_struct - { - int m_total_blocks; - int m_perceptual; - }; -#pragma pack(pop) - - bool opencl_refine_endpoint_clusterization( - opencl_context_ptr pContext, - const cl_block_info_struct* pPixel_block_info, - uint32_t total_clusters, - const cl_endpoint_cluster_struct* pCluster_info, - const uint32_t* pSorted_block_indices, - uint32_t* pOutput_cluster_indices, - bool perceptual) - { - if (!opencl_is_available()) - return false; - - interval_timer tm; - tm.start(); - - assert(pContext->m_ocl_pixel_blocks); - if (!pContext->m_ocl_pixel_blocks) - return false; - - cl_rec_param_struct ps; - ps.m_total_blocks = pContext->m_ocl_total_pixel_blocks; - ps.m_perceptual = perceptual; - - bool status = false; - - cl_mem pixel_block_info = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pPixel_block_info, sizeof(cl_block_info_struct) * pContext->m_ocl_total_pixel_blocks); - cl_mem cluster_info = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pCluster_info, sizeof(cl_endpoint_cluster_struct) * total_clusters); - cl_mem sorted_block_indices = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pSorted_block_indices, sizeof(uint32_t) * pContext->m_ocl_total_pixel_blocks); - cl_mem output_buf = g_ocl.alloc_write_buffer(sizeof(uint32_t) * pContext->m_ocl_total_pixel_blocks); - - if (!pixel_block_info || !cluster_info || !sorted_block_indices || !output_buf) - goto exit; - - if (!g_ocl.set_kernel_args(pContext->m_ocl_refine_endpoint_clusterization_kernel, ps, pContext->m_ocl_pixel_blocks, pixel_block_info, cluster_info, sorted_block_indices, output_buf)) - goto exit; - - if (!g_ocl.run_2D(pContext->m_command_queue, pContext->m_ocl_refine_endpoint_clusterization_kernel, pContext->m_ocl_total_pixel_blocks, 1)) - goto exit; - - if (!g_ocl.read_from_buffer(pContext->m_command_queue, output_buf, pOutput_cluster_indices, pContext->m_ocl_total_pixel_blocks * sizeof(uint32_t))) - goto exit; - - debug_printf("opencl_refine_endpoint_clusterization: Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - - status = true; - -exit: - g_ocl.destroy_buffer(pixel_block_info); - g_ocl.destroy_buffer(cluster_info); - g_ocl.destroy_buffer(sorted_block_indices); - g_ocl.destroy_buffer(output_buf); - - return status; - } - - bool opencl_find_optimal_selector_clusters_for_each_block( - opencl_context_ptr pContext, - const fosc_block_struct* pInput_block_info, // one per block - uint32_t total_input_selectors, - const fosc_selector_struct* pInput_selectors, - const uint32_t* pSelector_cluster_indices, - uint32_t* pOutput_selector_cluster_indices, // one per block - bool perceptual) - { - if (!opencl_is_available()) - return false; - - interval_timer tm; - tm.start(); - - assert(pContext->m_ocl_pixel_blocks); - if (!pContext->m_ocl_pixel_blocks) - return false; - - fosc_param_struct ps; - ps.m_total_blocks = pContext->m_ocl_total_pixel_blocks; - ps.m_perceptual = perceptual; - - bool status = false; - - cl_mem input_block_info = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pInput_block_info, sizeof(fosc_block_struct) * pContext->m_ocl_total_pixel_blocks); - cl_mem input_selectors = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pInput_selectors, sizeof(fosc_selector_struct) * total_input_selectors); - cl_mem selector_cluster_indices = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pSelector_cluster_indices, sizeof(uint32_t) * total_input_selectors); - cl_mem output_selector_cluster_indices = g_ocl.alloc_write_buffer(sizeof(uint32_t) * pContext->m_ocl_total_pixel_blocks); - - if (!input_block_info || !input_selectors || !selector_cluster_indices || !output_selector_cluster_indices) - goto exit; - - if (!g_ocl.set_kernel_args(pContext->m_ocl_find_optimal_selector_clusters_for_each_block_kernel, ps, pContext->m_ocl_pixel_blocks, input_block_info, input_selectors, selector_cluster_indices, output_selector_cluster_indices)) - goto exit; - - if (!g_ocl.run_2D(pContext->m_command_queue, pContext->m_ocl_find_optimal_selector_clusters_for_each_block_kernel, pContext->m_ocl_total_pixel_blocks, 1)) - goto exit; - - if (!g_ocl.read_from_buffer(pContext->m_command_queue, output_selector_cluster_indices, pOutput_selector_cluster_indices, pContext->m_ocl_total_pixel_blocks * sizeof(uint32_t))) - goto exit; - - debug_printf("opencl_find_optimal_selector_clusters_for_each_block: Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - - status = true; - - exit: - g_ocl.destroy_buffer(input_block_info); - g_ocl.destroy_buffer(input_selectors); - g_ocl.destroy_buffer(selector_cluster_indices); - g_ocl.destroy_buffer(output_selector_cluster_indices); - - return status; - } - - bool opencl_determine_selectors( - opencl_context_ptr pContext, - const color_rgba* pInput_etc_color5_and_inten, - etc_block* pOutput_blocks, - bool perceptual) - { - if (!opencl_is_available()) - return false; - - interval_timer tm; - tm.start(); - - assert(pContext->m_ocl_pixel_blocks); - if (!pContext->m_ocl_pixel_blocks) - return false; - - ds_param_struct ps; - ps.m_total_blocks = pContext->m_ocl_total_pixel_blocks; - ps.m_perceptual = perceptual; - - bool status = false; - - cl_mem input_etc_color5_intens = g_ocl.alloc_and_init_read_buffer(pContext->m_command_queue, pInput_etc_color5_and_inten, sizeof(color_rgba) * pContext->m_ocl_total_pixel_blocks); - cl_mem output_blocks = g_ocl.alloc_write_buffer(sizeof(etc_block) * pContext->m_ocl_total_pixel_blocks); - - if (!input_etc_color5_intens || !output_blocks) - goto exit; - - if (!g_ocl.set_kernel_args(pContext->m_ocl_determine_selectors_kernel, ps, pContext->m_ocl_pixel_blocks, input_etc_color5_intens, output_blocks)) - goto exit; - - if (!g_ocl.run_2D(pContext->m_command_queue, pContext->m_ocl_determine_selectors_kernel, pContext->m_ocl_total_pixel_blocks, 1)) - goto exit; - - if (!g_ocl.read_from_buffer(pContext->m_command_queue, output_blocks, pOutput_blocks, pContext->m_ocl_total_pixel_blocks * sizeof(etc_block))) - goto exit; - - debug_printf("opencl_determine_selectors: Elapsed time: %3.3f secs\n", tm.get_elapsed_secs()); - - status = true; - - exit: - g_ocl.destroy_buffer(input_etc_color5_intens); - g_ocl.destroy_buffer(output_blocks); - - return status; - } - -#else -namespace basisu -{ - // No OpenCL support - all dummy functions that return false; - bool opencl_init(bool force_serialization) - { - BASISU_NOTE_UNUSED(force_serialization); - - return false; - } - - void opencl_deinit() - { - } - - bool opencl_is_available() - { - return false; - } - - opencl_context_ptr opencl_create_context() - { - return nullptr; - } - - void opencl_destroy_context(opencl_context_ptr context) - { - BASISU_NOTE_UNUSED(context); - } - - bool opencl_set_pixel_blocks(opencl_context_ptr pContext, uint32_t total_blocks, const cl_pixel_block* pPixel_blocks) - { - BASISU_NOTE_UNUSED(pContext); - BASISU_NOTE_UNUSED(total_blocks); - BASISU_NOTE_UNUSED(pPixel_blocks); - - return false; - } - - bool opencl_encode_etc1s_blocks(opencl_context_ptr pContext, etc_block* pOutput_blocks, bool perceptual, uint32_t total_perms) - { - BASISU_NOTE_UNUSED(pContext); - BASISU_NOTE_UNUSED(pOutput_blocks); - BASISU_NOTE_UNUSED(perceptual); - BASISU_NOTE_UNUSED(total_perms); - - return false; - } - - bool opencl_encode_etc1s_pixel_clusters( - opencl_context_ptr pContext, - etc_block* pOutput_blocks, - uint32_t total_clusters, - const cl_pixel_cluster* pClusters, - uint64_t total_pixels, - const color_rgba* pPixels, const uint32_t *pPixel_weights, - bool perceptual, uint32_t total_perms) - { - BASISU_NOTE_UNUSED(pContext); - BASISU_NOTE_UNUSED(pOutput_blocks); - BASISU_NOTE_UNUSED(total_clusters); - BASISU_NOTE_UNUSED(pClusters); - BASISU_NOTE_UNUSED(total_pixels); - BASISU_NOTE_UNUSED(pPixels); - BASISU_NOTE_UNUSED(pPixel_weights); - BASISU_NOTE_UNUSED(perceptual); - BASISU_NOTE_UNUSED(total_perms); - - return false; - } - - bool opencl_refine_endpoint_clusterization( - opencl_context_ptr pContext, - const cl_block_info_struct* pPixel_block_info, - uint32_t total_clusters, - const cl_endpoint_cluster_struct* pCluster_info, - const uint32_t* pSorted_block_indices, - uint32_t* pOutput_cluster_indices, - bool perceptual) - { - BASISU_NOTE_UNUSED(pContext); - BASISU_NOTE_UNUSED(pPixel_block_info); - BASISU_NOTE_UNUSED(total_clusters); - BASISU_NOTE_UNUSED(pCluster_info); - BASISU_NOTE_UNUSED(pSorted_block_indices); - BASISU_NOTE_UNUSED(pOutput_cluster_indices); - BASISU_NOTE_UNUSED(perceptual); - - return false; - } - - bool opencl_find_optimal_selector_clusters_for_each_block( - opencl_context_ptr pContext, - const fosc_block_struct* pInput_block_info, // one per block - uint32_t total_input_selectors, - const fosc_selector_struct* pInput_selectors, - const uint32_t* pSelector_cluster_indices, - uint32_t* pOutput_selector_cluster_indices, // one per block - bool perceptual) - { - BASISU_NOTE_UNUSED(pContext); - BASISU_NOTE_UNUSED(pInput_block_info); - BASISU_NOTE_UNUSED(total_input_selectors); - BASISU_NOTE_UNUSED(pInput_selectors); - BASISU_NOTE_UNUSED(pSelector_cluster_indices); - BASISU_NOTE_UNUSED(pOutput_selector_cluster_indices); - BASISU_NOTE_UNUSED(perceptual); - - return false; - } - - bool opencl_determine_selectors( - opencl_context_ptr pContext, - const color_rgba* pInput_etc_color5_and_inten, - etc_block* pOutput_blocks, - bool perceptual) - { - BASISU_NOTE_UNUSED(pContext); - BASISU_NOTE_UNUSED(pInput_etc_color5_and_inten); - BASISU_NOTE_UNUSED(pOutput_blocks); - BASISU_NOTE_UNUSED(perceptual); - - return false; - } - -#endif // BASISU_SUPPORT_OPENCL - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_opencl.h b/WickedEngine/Utility/basis_universal/encoder/basisu_opencl.h deleted file mode 100644 index 4194a0841..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_opencl.h +++ /dev/null @@ -1,143 +0,0 @@ -// basisu_opencl.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Note: Undefine or set BASISU_SUPPORT_OPENCL to 0 to completely OpenCL support. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "../transcoder/basisu.h" -#include "basisu_enc.h" -#include "basisu_etc.h" - -namespace basisu -{ - bool opencl_init(bool force_serialization); - void opencl_deinit(); - bool opencl_is_available(); - - struct opencl_context; - - // Each thread calling OpenCL should have its own opencl_context_ptr. This corresponds to a OpenCL command queue. (Confusingly, we only use a single OpenCL device "context".) - typedef opencl_context* opencl_context_ptr; - - opencl_context_ptr opencl_create_context(); - void opencl_destroy_context(opencl_context_ptr context); - -#pragma pack(push, 1) - struct cl_pixel_block - { - color_rgba m_pixels[16]; // [y*4+x] - }; -#pragma pack(pop) - - // Must match BASISU_ETC1_CLUSTER_FIT_ORDER_TABLE_SIZE - const uint32_t OPENCL_ENCODE_ETC1S_MAX_PERMS = 165; - - bool opencl_set_pixel_blocks(opencl_context_ptr pContext, uint32_t total_blocks, const cl_pixel_block* pPixel_blocks); - - bool opencl_encode_etc1s_blocks(opencl_context_ptr pContext, etc_block* pOutput_blocks, bool perceptual, uint32_t total_perms); - - // opencl_encode_etc1s_pixel_clusters - -#pragma pack(push, 1) - struct cl_pixel_cluster - { - uint64_t m_total_pixels; - uint64_t m_first_pixel_index; - }; -#pragma pack(pop) - - bool opencl_encode_etc1s_pixel_clusters( - opencl_context_ptr pContext, - etc_block* pOutput_blocks, - uint32_t total_clusters, - const cl_pixel_cluster *pClusters, - uint64_t total_pixels, - const color_rgba *pPixels, - const uint32_t *pPixel_weights, - bool perceptual, uint32_t total_perms); - - // opencl_refine_endpoint_clusterization - -#pragma pack(push, 1) - struct cl_block_info_struct - { - uint16_t m_first_cluster_ofs; - uint16_t m_num_clusters; - uint16_t m_cur_cluster_index; - uint8_t m_cur_cluster_etc_inten; - }; - - struct cl_endpoint_cluster_struct - { - color_rgba m_unscaled_color; - uint8_t m_etc_inten; - uint16_t m_cluster_index; - }; -#pragma pack(pop) - - bool opencl_refine_endpoint_clusterization( - opencl_context_ptr pContext, - const cl_block_info_struct *pPixel_block_info, - uint32_t total_clusters, - const cl_endpoint_cluster_struct *pCluster_info, - const uint32_t *pSorted_block_indices, - uint32_t* pOutput_cluster_indices, - bool perceptual); - - // opencl_find_optimal_selector_clusters_for_each_block - -#pragma pack(push, 1) - struct fosc_selector_struct - { - uint32_t m_packed_selectors; // 4x4 grid of 2-bit selectors - }; - - struct fosc_block_struct - { - color_rgba m_etc_color5_inten; // unscaled 5-bit block color in RGB, alpha has block's intensity index - uint32_t m_first_selector; // offset into selector table - uint32_t m_num_selectors; // number of selectors to check - }; - - struct fosc_param_struct - { - uint32_t m_total_blocks; - int m_perceptual; - }; -#pragma pack(pop) - - bool opencl_find_optimal_selector_clusters_for_each_block( - opencl_context_ptr pContext, - const fosc_block_struct* pInput_block_info, // one per block - uint32_t total_input_selectors, - const fosc_selector_struct* pInput_selectors, - const uint32_t* pSelector_cluster_indices, - uint32_t* pOutput_selector_cluster_indices, // one per block - bool perceptual); - -#pragma pack(push, 1) - struct ds_param_struct - { - uint32_t m_total_blocks; - int m_perceptual; - }; -#pragma pack(pop) - - bool opencl_determine_selectors( - opencl_context_ptr pContext, - const color_rgba* pInput_etc_color5_and_inten, - etc_block* pOutput_blocks, - bool perceptual); - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_pvrtc1_4.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_pvrtc1_4.cpp deleted file mode 100644 index 596fc197e..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_pvrtc1_4.cpp +++ /dev/null @@ -1,564 +0,0 @@ -// basisu_pvrtc1_4.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_pvrtc1_4.h" - -namespace basisu -{ -#if 0 - static const uint8_t g_pvrtc_5[32] = { 0,8,16,24,33,41,49,57,66,74,82,90,99,107,115,123,132,140,148,156,165,173,181,189,198,206,214,222,231,239,247,255 }; - static const uint8_t g_pvrtc_4[16] = { 0,16,33,49,66,82,99,115,140,156,173,189,206,222,239,255 }; - static const uint8_t g_pvrtc_3[8] = { 0,33,74,107,148,181,222,255 }; - static const uint8_t g_pvrtc_alpha[9] = { 0,34,68,102,136,170,204,238,255 }; -#endif - - static const uint8_t g_pvrtc_5_nearest[256] = { 0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,16,16,16,16,16,16,16,16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19,19,19,19,19,20,20,20,20,20,20,20,20,20,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,23,23,23,23,23,23,23,23,24,24,24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,27,27,27,27,27,27,27,27,28,28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,30,30,30,30,30,30,30,30,31,31,31,31 }; - static const uint8_t g_pvrtc_4_nearest[256] = { 0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15 }; -#if 0 - static const uint8_t g_pvrtc_3_nearest[256] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 }; - static const uint8_t g_pvrtc_alpha_nearest[256] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8 }; -#endif - -#if 0 - static const uint8_t g_pvrtc_5_floor[256] = - { - 0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3, - 3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7, - 7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11, - 11,11,11,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,15,15,15,15,15, - 15,15,15,15,16,16,16,16,16,16,16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19, - 19,19,19,19,19,20,20,20,20,20,20,20,20,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,23,23,23, - 23,23,23,23,23,23,24,24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,27,27, - 27,27,27,27,27,27,27,28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,30,30,30,30,30,30,30,30,31 - }; - - static const uint8_t g_pvrtc_5_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4, - 4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,8,8,8,8,8,8, - 8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,12,12,12,12,12, - 12,12,12,12,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,16,16,16,16, - 16,16,16,16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19,19,19,19,19,20,20,20, - 20,20,20,20,20,20,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,23,23,23,23,23,23,23,23,24,24, - 24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,27,27,27,27,27,27,27,27,28, - 28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,30,30,30,30,30,30,30,30,31,31,31,31,31,31,31,31 - }; - - static const uint8_t g_pvrtc_4_floor[256] = - { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11, - 11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13, - 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,15 - }; - - static const uint8_t g_pvrtc_4_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,10,10,10, - 10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12, - 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14, - 14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15 - }; - - static const uint8_t g_pvrtc_3_floor[256] = - { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7 - }; - - static const uint8_t g_pvrtc_3_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 - }; - - static const uint8_t g_pvrtc_alpha_floor[256] = - { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8 - }; - - static const uint8_t g_pvrtc_alpha_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 - }; -#endif - - uint32_t pvrtc4_swizzle_uv(uint32_t width, uint32_t height, uint32_t x, uint32_t y) - { - assert((x < width) && (y < height) && basisu::is_pow2(height) && basisu::is_pow2(width)); - - uint32_t min_d = width, max_v = y; - if (height < width) - { - min_d = height; - max_v = x; - } - - // Interleave the XY LSB's - uint32_t shift_ofs = 0, swizzled = 0; - for (uint32_t s_bit = 1, d_bit = 1; s_bit < min_d; s_bit <<= 1, d_bit <<= 2, ++shift_ofs) - { - if (y & s_bit) swizzled |= d_bit; - if (x & s_bit) swizzled |= (2 * d_bit); - } - - max_v >>= shift_ofs; - - // OR in the rest of the bits from the largest dimension - swizzled |= (max_v << (2 * shift_ofs)); - - return swizzled; - } - - color_rgba pvrtc4_block::get_endpoint(uint32_t endpoint_index, bool unpack) const - { - assert(endpoint_index < 2); - const uint32_t packed = m_endpoints >> (endpoint_index * 16); - - uint32_t r, g, b, a; - if (packed & 0x8000) - { - // opaque 554 or 555 - if (!endpoint_index) - { - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = (packed >> 1) & 15; - - if (unpack) - { - b = (b << 1) | (b >> 3); - } - } - else - { - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - } - - a = unpack ? 255 : 7; - } - else - { - // translucent 4433 or 4443 - if (!endpoint_index) - { - a = (packed >> 12) & 7; - r = (packed >> 8) & 15; - g = (packed >> 4) & 15; - b = (packed >> 1) & 7; - - if (unpack) - { - a = (a << 1); - a = (a << 4) | a; - - r = (r << 1) | (r >> 3); - g = (g << 1) | (g >> 3); - b = (b << 2) | (b >> 1); - } - } - else - { - a = (packed >> 12) & 7; - r = (packed >> 8) & 15; - g = (packed >> 4) & 15; - b = packed & 15; - - if (unpack) - { - a = (a << 1); - a = (a << 4) | a; - - r = (r << 1) | (r >> 3); - g = (g << 1) | (g >> 3); - b = (b << 1) | (b >> 3); - } - } - } - - if (unpack) - { - r = (r << 3) | (r >> 2); - g = (g << 3) | (g >> 2); - b = (b << 3) | (b >> 2); - } - - assert((r < 256) && (g < 256) && (b < 256) && (a < 256)); - - return color_rgba(r, g, b, a); - } - - color_rgba pvrtc4_block::get_endpoint_5554(uint32_t endpoint_index) const - { - assert(endpoint_index < 2); - const uint32_t packed = m_endpoints >> (endpoint_index * 16); - - uint32_t r, g, b, a; - if (packed & 0x8000) - { - // opaque 554 or 555 - if (!endpoint_index) - { - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = (packed >> 1) & 15; - - b = (b << 1) | (b >> 3); - } - else - { - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - } - - a = 15; - } - else - { - // translucent 4433 or 4443 - if (!endpoint_index) - { - a = (packed >> 12) & 7; - r = (packed >> 8) & 15; - g = (packed >> 4) & 15; - b = (packed >> 1) & 7; - - a = a << 1; - - r = (r << 1) | (r >> 3); - g = (g << 1) | (g >> 3); - b = (b << 2) | (b >> 1); - } - else - { - a = (packed >> 12) & 7; - r = (packed >> 8) & 15; - g = (packed >> 4) & 15; - b = packed & 15; - - a = a << 1; - - r = (r << 1) | (r >> 3); - g = (g << 1) | (g >> 3); - b = (b << 1) | (b >> 3); - } - } - - assert((r < 32) && (g < 32) && (b < 32) && (a < 16)); - - return color_rgba(r, g, b, a); - } - - bool pvrtc4_image::get_interpolated_colors(uint32_t x, uint32_t y, color_rgba* pColors) const - { - assert((x < m_width) && (y < m_height)); - - int block_x0 = (static_cast(x) - 2) >> 2; - int block_x1 = block_x0 + 1; - int block_y0 = (static_cast(y) - 2) >> 2; - int block_y1 = block_y0 + 1; - - block_x0 = posmod(block_x0, m_block_width); - block_x1 = posmod(block_x1, m_block_width); - block_y0 = posmod(block_y0, m_block_height); - block_y1 = posmod(block_y1, m_block_height); - - pColors[0] = interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0)); - pColors[3] = interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1)); - - if (get_block_uses_transparent_modulation(x >> 2, y >> 2)) - { - for (uint32_t c = 0; c < 4; c++) - { - uint32_t m = (pColors[0][c] + pColors[3][c]) / 2; - pColors[1][c] = static_cast(m); - pColors[2][c] = static_cast(m); - } - pColors[2][3] = 0; - return true; - } - - for (uint32_t c = 0; c < 4; c++) - { - pColors[1][c] = static_cast((pColors[0][c] * 5 + pColors[3][c] * 3) / 8); - pColors[2][c] = static_cast((pColors[0][c] * 3 + pColors[3][c] * 5) / 8); - } - - return false; - } - - color_rgba pvrtc4_image::get_pixel(uint32_t x, uint32_t y, uint32_t m) const - { - assert((x < m_width) && (y < m_height)); - - int block_x0 = (static_cast(x) - 2) >> 2; - int block_x1 = block_x0 + 1; - int block_y0 = (static_cast(y) - 2) >> 2; - int block_y1 = block_y0 + 1; - - block_x0 = posmod(block_x0, m_block_width); - block_x1 = posmod(block_x1, m_block_width); - block_y0 = posmod(block_y0, m_block_height); - block_y1 = posmod(block_y1, m_block_height); - - if (get_block_uses_transparent_modulation(x >> 2, y >> 2)) - { - if (m == 0) - return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0)); - else if (m == 3) - return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1)); - - color_rgba l(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0))); - color_rgba h(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1))); - - return color_rgba((l[0] + h[0]) / 2, (l[1] + h[1]) / 2, (l[2] + h[2]) / 2, (m == 2) ? 0 : (l[3] + h[3]) / 2); - } - else - { - if (m == 0) - return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0)); - else if (m == 3) - return interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1)); - - color_rgba l(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(0), m_blocks(block_x1, block_y0).get_endpoint_5554(0), m_blocks(block_x0, block_y1).get_endpoint_5554(0), m_blocks(block_x1, block_y1).get_endpoint_5554(0))); - color_rgba h(interpolate(x, y, m_blocks(block_x0, block_y0).get_endpoint_5554(1), m_blocks(block_x1, block_y0).get_endpoint_5554(1), m_blocks(block_x0, block_y1).get_endpoint_5554(1), m_blocks(block_x1, block_y1).get_endpoint_5554(1))); - - if (m == 2) - return color_rgba((l[0] * 3 + h[0] * 5) / 8, (l[1] * 3 + h[1] * 5) / 8, (l[2] * 3 + h[2] * 5) / 8, (l[3] * 3 + h[3] * 5) / 8); - else - return color_rgba((l[0] * 5 + h[0] * 3) / 8, (l[1] * 5 + h[1] * 3) / 8, (l[2] * 5 + h[2] * 3) / 8, (l[3] * 5 + h[3] * 3) / 8); - } - } - - uint64_t pvrtc4_image::local_endpoint_optimization_opaque(uint32_t bx, uint32_t by, const image& orig_img, bool perceptual) - { - uint64_t initial_error = evaluate_1x1_endpoint_error(bx, by, orig_img, perceptual, false); - if (!initial_error) - return initial_error; - - vec3F c_avg_orig(0); - - for (int y = 0; y < 7; y++) - { - const uint32_t py = wrap_y(by * 4 + y - 1); - for (uint32_t x = 0; x < 7; x++) - { - const uint32_t px = wrap_x(bx * 4 + x - 1); - - const color_rgba& c = orig_img(px, py); - - c_avg_orig[0] += c[0]; - c_avg_orig[1] += c[1]; - c_avg_orig[2] += c[2]; - } - } - - c_avg_orig *= 1.0f / 49.0f; - - vec3F quant_colors[2]; - quant_colors[0].set(c_avg_orig); - quant_colors[0] -= vec3F(.0125f); - - quant_colors[1].set(c_avg_orig); - quant_colors[1] += vec3F(.0125f); - - float total_weight[2]; - - bool success = true; - - for (uint32_t pass = 0; pass < 4; pass++) - { - vec3F new_colors[2] = { vec3F(0), vec3F(0) }; - memset(total_weight, 0, sizeof(total_weight)); - - static const float s_weights[7][7] = - { - { 1.000000f, 1.637089f, 2.080362f, 2.242640f, 2.080362f, 1.637089f, 1.000000f }, - { 1.637089f, 2.414213f, 3.006572f, 3.242640f, 3.006572f, 2.414213f, 1.637089f }, - { 2.080362f, 3.006572f, 3.828426f, 4.242640f, 3.828426f, 3.006572f, 2.080362f }, - { 2.242640f, 3.242640f, 4.242640f, 5.000000f, 4.242640f, 3.242640f, 2.242640f }, - { 2.080362f, 3.006572f, 3.828426f, 4.242640f, 3.828426f, 3.006572f, 2.080362f }, - { 1.637089f, 2.414213f, 3.006572f, 3.242640f, 3.006572f, 2.414213f, 1.637089f }, - { 1.000000f, 1.637089f, 2.080362f, 2.242640f, 2.080362f, 1.637089f, 1.000000f } - }; - - for (int y = 0; y < 7; y++) - { - const uint32_t py = wrap_y(by * 4 + y - 1); - for (uint32_t x = 0; x < 7; x++) - { - const uint32_t px = wrap_x(bx * 4 + x - 1); - - const color_rgba& orig_c = orig_img(px, py); - - vec3F color(orig_c[0], orig_c[1], orig_c[2]); - - uint32_t c = quant_colors[0].squared_distance(color) > quant_colors[1].squared_distance(color); - - const float weight = s_weights[y][x]; - new_colors[c] += color * weight; - - total_weight[c] += weight; - } - } - - if (!total_weight[0] || !total_weight[1]) - success = false; - - quant_colors[0] = new_colors[0] / (float)total_weight[0]; - quant_colors[1] = new_colors[1] / (float)total_weight[1]; - } - - if (!success) - { - quant_colors[0] = c_avg_orig; - quant_colors[1] = c_avg_orig; - } - - vec4F colors[2] = { quant_colors[0], quant_colors[1] }; - - colors[0] += vec3F(.5f); - colors[1] += vec3F(.5f); - color_rgba color_0((int)colors[0][0], (int)colors[0][1], (int)colors[0][2], 0); - color_rgba color_1((int)colors[1][0], (int)colors[1][1], (int)colors[1][2], 0); - - pvrtc4_block cur_blocks[3][3]; - - for (int y = -1; y <= 1; y++) - { - for (int x = -1; x <= 1; x++) - { - const uint32_t block_x = wrap_block_x(bx + x); - const uint32_t block_y = wrap_block_y(by + y); - cur_blocks[x + 1][y + 1] = m_blocks(block_x, block_y); - } - } - - color_rgba l1(0), h1(0); - - l1[0] = g_pvrtc_5_nearest[color_0[0]]; - h1[0] = g_pvrtc_5_nearest[color_1[0]]; - - l1[1] = g_pvrtc_5_nearest[color_0[1]]; - h1[1] = g_pvrtc_5_nearest[color_1[1]]; - - l1[2] = g_pvrtc_4_nearest[color_0[2]]; - h1[2] = g_pvrtc_5_nearest[color_0[2]]; - - l1[3] = 0; - h1[3] = 0; - - m_blocks(bx, by).set_endpoint_raw(0, l1, true); - m_blocks(bx, by).set_endpoint_raw(1, h1, true); - - uint64_t e03_err_0 = remap_pixels_influenced_by_endpoint(bx, by, orig_img, perceptual, false); - - pvrtc4_block blocks0[3][3]; - for (int y = -1; y <= 1; y++) - { - for (int x = -1; x <= 1; x++) - { - const uint32_t block_x = wrap_block_x(bx + x); - const uint32_t block_y = wrap_block_y(by + y); - blocks0[x + 1][y + 1] = m_blocks(block_x, block_y); - } - } - - l1[0] = g_pvrtc_5_nearest[color_1[0]]; - h1[0] = g_pvrtc_5_nearest[color_0[0]]; - - l1[1] = g_pvrtc_5_nearest[color_1[1]]; - h1[1] = g_pvrtc_5_nearest[color_0[1]]; - - l1[2] = g_pvrtc_4_nearest[color_1[2]]; - h1[2] = g_pvrtc_5_nearest[color_0[2]]; - - l1[3] = 0; - h1[3] = 0; - - m_blocks(bx, by).set_endpoint_raw(0, l1, true); - m_blocks(bx, by).set_endpoint_raw(1, h1, true); - - uint64_t e03_err_1 = remap_pixels_influenced_by_endpoint(bx, by, orig_img, perceptual, false); - - if (initial_error < basisu::minimum(e03_err_0, e03_err_1)) - { - for (int y = -1; y <= 1; y++) - { - for (int x = -1; x <= 1; x++) - { - const uint32_t block_x = wrap_block_x(bx + x); - const uint32_t block_y = wrap_block_y(by + y); - m_blocks(block_x, block_y) = cur_blocks[x + 1][y + 1]; - } - } - return initial_error; - } - else if (e03_err_0 < e03_err_1) - { - for (int y = -1; y <= 1; y++) - { - for (int x = -1; x <= 1; x++) - { - const uint32_t block_x = wrap_block_x(bx + x); - const uint32_t block_y = wrap_block_y(by + y); - m_blocks(block_x, block_y) = blocks0[x + 1][y + 1]; - } - } - assert(e03_err_0 == evaluate_1x1_endpoint_error(bx, by, orig_img, perceptual, false)); - return e03_err_0; - } - - assert(e03_err_1 == evaluate_1x1_endpoint_error(bx, by, orig_img, perceptual, false)); - return e03_err_1; - } - -} // basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_pvrtc1_4.h b/WickedEngine/Utility/basis_universal/encoder/basisu_pvrtc1_4.h deleted file mode 100644 index db6985a43..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_pvrtc1_4.h +++ /dev/null @@ -1,457 +0,0 @@ -// basisu_pvrtc1_4.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_gpu_texture.h" - -namespace basisu -{ - enum - { - PVRTC2_MIN_WIDTH = 16, - PVRTC2_MIN_HEIGHT = 8, - PVRTC4_MIN_WIDTH = 8, - PVRTC4_MIN_HEIGHT = 8 - }; - - struct pvrtc4_block - { - uint32_t m_modulation; - uint32_t m_endpoints; - - pvrtc4_block() : m_modulation(0), m_endpoints(0) { } - - inline bool operator== (const pvrtc4_block& rhs) const - { - return (m_modulation == rhs.m_modulation) && (m_endpoints == rhs.m_endpoints); - } - - inline void clear() - { - m_modulation = 0; - m_endpoints = 0; - } - - inline bool get_block_uses_transparent_modulation() const - { - return (m_endpoints & 1) != 0; - } - - inline bool is_endpoint_opaque(uint32_t endpoint_index) const - { - static const uint32_t s_bitmasks[2] = { 0x8000U, 0x80000000U }; - return (m_endpoints & s_bitmasks[open_range_check(endpoint_index, 2U)]) != 0; - } - - // Returns raw endpoint or 8888 - color_rgba get_endpoint(uint32_t endpoint_index, bool unpack) const; - - color_rgba get_endpoint_5554(uint32_t endpoint_index) const; - - static uint32_t get_component_precision_in_bits(uint32_t c, uint32_t endpoint_index, bool opaque_endpoint) - { - static const uint32_t s_comp_prec[4][4] = - { - // R0 G0 B0 A0 R1 G1 B1 A1 - { 4, 4, 3, 3 }, { 4, 4, 4, 3 }, // transparent endpoint - - { 5, 5, 4, 0 }, { 5, 5, 5, 0 } // opaque endpoint - }; - return s_comp_prec[open_range_check(endpoint_index, 2U) + (opaque_endpoint * 2)][open_range_check(c, 4U)]; - } - - static color_rgba get_color_precision_in_bits(uint32_t endpoint_index, bool opaque_endpoint) - { - static const color_rgba s_color_prec[4] = - { - color_rgba(4, 4, 3, 3), color_rgba(4, 4, 4, 3), // transparent endpoint - color_rgba(5, 5, 4, 0), color_rgba(5, 5, 5, 0) // opaque endpoint - }; - return s_color_prec[open_range_check(endpoint_index, 2U) + (opaque_endpoint * 2)]; - } - - inline uint32_t get_modulation(uint32_t x, uint32_t y) const - { - assert((x < 4) && (y < 4)); - return (m_modulation >> ((y * 4 + x) * 2)) & 3; - } - - inline void set_modulation(uint32_t x, uint32_t y, uint32_t s) - { - assert((x < 4) && (y < 4) && (s < 4)); - uint32_t n = (y * 4 + x) * 2; - m_modulation = (m_modulation & (~(3 << n))) | (s << n); - assert(get_modulation(x, y) == s); - } - - // Scaled by 8 - inline const uint32_t* get_scaled_modulation_values(bool block_uses_transparent_modulation) const - { - static const uint32_t s_block_scales[2][4] = { { 0, 3, 5, 8 }, { 0, 4, 4, 8 } }; - return s_block_scales[block_uses_transparent_modulation]; - } - - // Scaled by 8 - inline uint32_t get_scaled_modulation(uint32_t x, uint32_t y) const - { - return get_scaled_modulation_values(get_block_uses_transparent_modulation())[get_modulation(x, y)]; - } - - inline void byte_swap() - { - m_modulation = byteswap32(m_modulation); - m_endpoints = byteswap32(m_endpoints); - } - - // opaque endpoints: 554, 555 - // transparent endpoints: 3443, 3444 - inline void set_endpoint_raw(uint32_t endpoint_index, const color_rgba& c, bool opaque_endpoint) - { - assert(endpoint_index < 2); - const uint32_t m = m_endpoints & 1; - uint32_t r = c[0], g = c[1], b = c[2], a = c[3]; - - uint32_t packed; - - if (opaque_endpoint) - { - if (!endpoint_index) - { - // 554 - // 1RRRRRGGGGGBBBBM - assert((r < 32) && (g < 32) && (b < 16)); - packed = 0x8000 | (r << 10) | (g << 5) | (b << 1) | m; - } - else - { - // 555 - // 1RRRRRGGGGGBBBBB - assert((r < 32) && (g < 32) && (b < 32)); - packed = 0x8000 | (r << 10) | (g << 5) | b; - } - } - else - { - if (!endpoint_index) - { - // 3443 - // 0AAA RRRR GGGG BBBM - assert((r < 16) && (g < 16) && (b < 8) && (a < 8)); - packed = (a << 12) | (r << 8) | (g << 4) | (b << 1) | m; - } - else - { - // 3444 - // 0AAA RRRR GGGG BBBB - assert((r < 16) && (g < 16) && (b < 16) && (a < 8)); - packed = (a << 12) | (r << 8) | (g << 4) | b; - } - } - - assert(packed <= 0xFFFF); - - if (endpoint_index) - m_endpoints = (m_endpoints & 0xFFFFU) | (packed << 16); - else - m_endpoints = (m_endpoints & 0xFFFF0000U) | packed; - } - }; - - typedef vector2D pvrtc4_block_vector2D; - - uint32_t pvrtc4_swizzle_uv(uint32_t XSize, uint32_t YSize, uint32_t XPos, uint32_t YPos); - - class pvrtc4_image - { - public: - inline pvrtc4_image() : - m_width(0), m_height(0), m_block_width(0), m_block_height(0), m_uses_alpha(false) - { - } - - inline pvrtc4_image(uint32_t width, uint32_t height) : - m_width(0), m_height(0), m_block_width(0), m_block_height(0), m_uses_alpha(false) - { - resize(width, height); - } - - inline void clear() - { - m_width = 0; - m_height = 0; - m_block_width = 0; - m_block_height = 0; - m_blocks.clear(); - m_uses_alpha = false; - } - - inline void resize(uint32_t width, uint32_t height) - { - if ((width == m_width) && (height == m_height)) - return; - - m_width = width; - m_height = height; - - m_block_width = (width + 3) >> 2; - m_block_height = (height + 3) >> 2; - - m_blocks.resize(m_block_width, m_block_height); - } - - inline uint32_t get_width() const { return m_width; } - inline uint32_t get_height() const { return m_height; } - - inline uint32_t get_block_width() const { return m_block_width; } - inline uint32_t get_block_height() const { return m_block_height; } - - inline const pvrtc4_block_vector2D &get_blocks() const { return m_blocks; } - inline pvrtc4_block_vector2D &get_blocks() { return m_blocks; } - - inline uint32_t get_total_blocks() const { return m_block_width * m_block_height; } - - inline bool get_uses_alpha() const { return m_uses_alpha; } - inline void set_uses_alpha(bool uses_alpha) { m_uses_alpha = uses_alpha; } - - inline bool are_blocks_equal(const pvrtc4_image& rhs) const - { - return m_blocks == rhs.m_blocks; - } - - inline void set_to_black() - { - memset(m_blocks.get_ptr(), 0, m_blocks.size_in_bytes()); - } - - inline bool get_block_uses_transparent_modulation(uint32_t bx, uint32_t by) const - { - return m_blocks(bx, by).get_block_uses_transparent_modulation(); - } - - inline bool is_endpoint_opaque(uint32_t bx, uint32_t by, uint32_t endpoint_index) const - { - return m_blocks(bx, by).is_endpoint_opaque(endpoint_index); - } - - color_rgba get_endpoint(uint32_t bx, uint32_t by, uint32_t endpoint_index, bool unpack) const - { - assert((bx < m_block_width) && (by < m_block_height)); - return m_blocks(bx, by).get_endpoint(endpoint_index, unpack); - } - - inline uint32_t get_modulation(uint32_t x, uint32_t y) const - { - assert((x < m_width) && (y < m_height)); - return m_blocks(x >> 2, y >> 2).get_modulation(x & 3, y & 3); - } - - // Returns true if the block uses transparent modulation. - bool get_interpolated_colors(uint32_t x, uint32_t y, color_rgba* pColors) const; - - color_rgba get_pixel(uint32_t x, uint32_t y, uint32_t m) const; - - inline color_rgba get_pixel(uint32_t x, uint32_t y) const - { - assert((x < m_width) && (y < m_height)); - return get_pixel(x, y, m_blocks(x >> 2, y >> 2).get_modulation(x & 3, y & 3)); - } - - void deswizzle() - { - pvrtc4_block_vector2D temp(m_blocks); - - for (uint32_t y = 0; y < m_block_height; y++) - for (uint32_t x = 0; x < m_block_width; x++) - m_blocks(x, y) = temp[pvrtc4_swizzle_uv(m_block_width, m_block_height, x, y)]; - } - - void swizzle() - { - pvrtc4_block_vector2D temp(m_blocks); - - for (uint32_t y = 0; y < m_block_height; y++) - for (uint32_t x = 0; x < m_block_width; x++) - m_blocks[pvrtc4_swizzle_uv(m_block_width, m_block_height, x, y)] = temp(x, y); - } - - void unpack_all_pixels(image& img) const - { - img.crop(m_width, m_height); - - for (uint32_t y = 0; y < m_height; y++) - for (uint32_t x = 0; x < m_width; x++) - img(x, y) = get_pixel(x, y); - } - - void unpack_block(image &dst, uint32_t block_x, uint32_t block_y) - { - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - dst(x, y) = get_pixel(block_x * 4 + x, block_y * 4 + y); - } - - inline int wrap_x(int x) const - { - return posmod(x, m_width); - } - - inline int wrap_y(int y) const - { - return posmod(y, m_height); - } - - inline int wrap_block_x(int bx) const - { - return posmod(bx, m_block_width); - } - - inline int wrap_block_y(int by) const - { - return posmod(by, m_block_height); - } - - inline vec2F get_interpolation_factors(uint32_t x, uint32_t y) const - { - // 0 1 2 3 - // 2 3 0 1 - // .5 .75 0 .25 - static const float s_interp[4] = { 2, 3, 0, 1 }; - return vec2F(s_interp[x & 3], s_interp[y & 3]); - } - - inline color_rgba interpolate(int x, int y, - const color_rgba& p, const color_rgba& q, - const color_rgba& r, const color_rgba& s) const - { - static const int s_interp[4] = { 2, 3, 0, 1 }; - const int u_interp = s_interp[x & 3]; - const int v_interp = s_interp[y & 3]; - - color_rgba result; - - for (uint32_t c = 0; c < 4; c++) - { - int t = p[c] * 4 + u_interp * ((int)q[c] - (int)p[c]); - int b = r[c] * 4 + u_interp * ((int)s[c] - (int)r[c]); - int v = t * 4 + v_interp * (b - t); - if (c < 3) - { - v >>= 1; - v += (v >> 5); - } - else - { - v += (v >> 4); - } - assert((v >= 0) && (v < 256)); - result[c] = static_cast(v); - } - - return result; - } - - inline void set_modulation(uint32_t x, uint32_t y, uint32_t s) - { - assert((x < m_width) && (y < m_height)); - return m_blocks(x >> 2, y >> 2).set_modulation(x & 3, y & 3, s); - } - - inline uint64_t map_pixel(uint32_t x, uint32_t y, const color_rgba& c, bool perceptual, bool alpha_is_significant, bool record = true) - { - color_rgba v[4]; - get_interpolated_colors(x, y, v); - - uint64_t best_dist = color_distance(perceptual, c, v[0], alpha_is_significant); - uint32_t best_v = 0; - for (uint32_t i = 1; i < 4; i++) - { - uint64_t dist = color_distance(perceptual, c, v[i], alpha_is_significant); - if (dist < best_dist) - { - best_dist = dist; - best_v = i; - } - } - - if (record) - set_modulation(x, y, best_v); - - return best_dist; - } - - inline uint64_t remap_pixels_influenced_by_endpoint(uint32_t bx, uint32_t by, const image& orig_img, bool perceptual, bool alpha_is_significant) - { - uint64_t total_error = 0; - - for (int yd = -3; yd <= 3; yd++) - { - const int y = wrap_y((int)by * 4 + 2 + yd); - - for (int xd = -3; xd <= 3; xd++) - { - const int x = wrap_x((int)bx * 4 + 2 + xd); - - total_error += map_pixel(x, y, orig_img(x, y), perceptual, alpha_is_significant); - } - } - - return total_error; - } - - inline uint64_t evaluate_1x1_endpoint_error(uint32_t bx, uint32_t by, const image& orig_img, bool perceptual, bool alpha_is_significant, uint64_t threshold_error = 0) const - { - uint64_t total_error = 0; - - for (int yd = -3; yd <= 3; yd++) - { - const int y = wrap_y((int)by * 4 + 2 + yd); - - for (int xd = -3; xd <= 3; xd++) - { - const int x = wrap_x((int)bx * 4 + 2 + xd); - - total_error += color_distance(perceptual, get_pixel(x, y), orig_img(x, y), alpha_is_significant); - - if ((threshold_error) && (total_error >= threshold_error)) - return total_error; - } - } - - return total_error; - } - - uint64_t local_endpoint_optimization_opaque(uint32_t bx, uint32_t by, const image& orig_img, bool perceptual); - - inline uint64_t map_all_pixels(const image& img, bool perceptual, bool alpha_is_significant) - { - assert(m_width == img.get_width()); - assert(m_height == img.get_height()); - - uint64_t total_error = 0; - for (uint32_t y = 0; y < img.get_height(); y++) - for (uint32_t x = 0; x < img.get_width(); x++) - total_error += map_pixel(x, y, img(x, y), perceptual, alpha_is_significant); - - return total_error; - } - - public: - uint32_t m_width, m_height; - pvrtc4_block_vector2D m_blocks; - uint32_t m_block_width, m_block_height; - - bool m_uses_alpha; - }; - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_resample_filters.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_resample_filters.cpp deleted file mode 100644 index 597cb3f61..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_resample_filters.cpp +++ /dev/null @@ -1,340 +0,0 @@ -// basisu_resampler_filters.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_resampler_filters.h" - -#ifndef M_PI - #define M_PI 3.14159265358979323846 -#endif - -namespace basisu -{ -#define BOX_FILTER_SUPPORT (0.5f) - static float box_filter(float t) /* pulse/Fourier window */ - { - // make_clist() calls the filter function with t inverted (pos = left, neg = right) - if ((t >= -0.5f) && (t < 0.5f)) - return 1.0f; - else - return 0.0f; - } - -#define TENT_FILTER_SUPPORT (1.0f) - static float tent_filter(float t) /* box (*) box, bilinear/triangle */ - { - if (t < 0.0f) - t = -t; - - if (t < 1.0f) - return 1.0f - t; - else - return 0.0f; - } - -#define BELL_SUPPORT (1.5f) - static float bell_filter(float t) /* box (*) box (*) box */ - { - if (t < 0.0f) - t = -t; - - if (t < .5f) - return (.75f - (t * t)); - - if (t < 1.5f) - { - t = (t - 1.5f); - return (.5f * (t * t)); - } - - return (0.0f); - } - -#define B_SPLINE_SUPPORT (2.0f) - static float B_spline_filter(float t) /* box (*) box (*) box (*) box */ - { - float tt; - - if (t < 0.0f) - t = -t; - - if (t < 1.0f) - { - tt = t * t; - return ((.5f * tt * t) - tt + (2.0f / 3.0f)); - } - else if (t < 2.0f) - { - t = 2.0f - t; - return ((1.0f / 6.0f) * (t * t * t)); - } - - return (0.0f); - } - - // Dodgson, N., "Quadratic Interpolation for Image Resampling" -#define QUADRATIC_SUPPORT 1.5f - static float quadratic(float t, const float R) - { - if (t < 0.0f) - t = -t; - if (t < QUADRATIC_SUPPORT) - { - float tt = t * t; - if (t <= .5f) - return (-2.0f * R) * tt + .5f * (R + 1.0f); - else - return (R * tt) + (-2.0f * R - .5f) * t + (3.0f / 4.0f) * (R + 1.0f); - } - else - return 0.0f; - } - - static float quadratic_interp_filter(float t) - { - return quadratic(t, 1.0f); - } - - static float quadratic_approx_filter(float t) - { - return quadratic(t, .5f); - } - - static float quadratic_mix_filter(float t) - { - return quadratic(t, .8f); - } - - // Mitchell, D. and A. Netravali, "Reconstruction Filters in Computer Graphics." - // Computer Graphics, Vol. 22, No. 4, pp. 221-228. - // (B, C) - // (1/3, 1/3) - Defaults recommended by Mitchell and Netravali - // (1, 0) - Equivalent to the Cubic B-Spline - // (0, 0.5) - Equivalent to the Catmull-Rom Spline - // (0, C) - The family of Cardinal Cubic Splines - // (B, 0) - Duff's tensioned B-Splines. - static float mitchell(float t, const float B, const float C) - { - float tt; - - tt = t * t; - - if (t < 0.0f) - t = -t; - - if (t < 1.0f) - { - t = (((12.0f - 9.0f * B - 6.0f * C) * (t * tt)) + ((-18.0f + 12.0f * B + 6.0f * C) * tt) + (6.0f - 2.0f * B)); - - return (t / 6.0f); - } - else if (t < 2.0f) - { - t = (((-1.0f * B - 6.0f * C) * (t * tt)) + ((6.0f * B + 30.0f * C) * tt) + ((-12.0f * B - 48.0f * C) * t) + (8.0f * B + 24.0f * C)); - - return (t / 6.0f); - } - - return (0.0f); - } - -#define MITCHELL_SUPPORT (2.0f) - static float mitchell_filter(float t) - { - return mitchell(t, 1.0f / 3.0f, 1.0f / 3.0f); - } - -#define CATMULL_ROM_SUPPORT (2.0f) - static float catmull_rom_filter(float t) - { - return mitchell(t, 0.0f, .5f); - } - - static double sinc(double x) - { - x = (x * M_PI); - - if ((x < 0.01f) && (x > -0.01f)) - return 1.0f + x * x * (-1.0f / 6.0f + x * x * 1.0f / 120.0f); - - return sin(x) / x; - } - - static float clean(double t) - { - const float EPSILON = .0000125f; - if (fabs(t) < EPSILON) - return 0.0f; - return (float)t; - } - - //static double blackman_window(double x) - //{ - // return .42f + .50f * cos(M_PI*x) + .08f * cos(2.0f*M_PI*x); - //} - - static double blackman_exact_window(double x) - { - return 0.42659071f + 0.49656062f * cos(M_PI * x) + 0.07684867f * cos(2.0f * M_PI * x); - } - -#define BLACKMAN_SUPPORT (3.0f) - static float blackman_filter(float t) - { - if (t < 0.0f) - t = -t; - - if (t < 3.0f) - //return clean(sinc(t) * blackman_window(t / 3.0f)); - return clean(sinc(t) * blackman_exact_window(t / 3.0f)); - else - return (0.0f); - } - -#define GAUSSIAN_SUPPORT (1.25f) - static float gaussian_filter(float t) // with blackman window - { - if (t < 0) - t = -t; - if (t < GAUSSIAN_SUPPORT) - return clean(exp(-2.0f * t * t) * sqrt(2.0f / M_PI) * blackman_exact_window(t / GAUSSIAN_SUPPORT)); - else - return 0.0f; - } - - // Windowed sinc -- see "Jimm Blinn's Corner: Dirty Pixels" pg. 26. -#define LANCZOS3_SUPPORT (3.0f) - static float lanczos3_filter(float t) - { - if (t < 0.0f) - t = -t; - - if (t < 3.0f) - return clean(sinc(t) * sinc(t / 3.0f)); - else - return (0.0f); - } - -#define LANCZOS4_SUPPORT (4.0f) - static float lanczos4_filter(float t) - { - if (t < 0.0f) - t = -t; - - if (t < 4.0f) - return clean(sinc(t) * sinc(t / 4.0f)); - else - return (0.0f); - } - -#define LANCZOS6_SUPPORT (6.0f) - static float lanczos6_filter(float t) - { - if (t < 0.0f) - t = -t; - - if (t < 6.0f) - return clean(sinc(t) * sinc(t / 6.0f)); - else - return (0.0f); - } - -#define LANCZOS12_SUPPORT (12.0f) - static float lanczos12_filter(float t) - { - if (t < 0.0f) - t = -t; - - if (t < 12.0f) - return clean(sinc(t) * sinc(t / 12.0f)); - else - return (0.0f); - } - - static double bessel0(double x) - { - const double EPSILON_RATIO = 1E-16; - double xh, sum, pow, ds; - int k; - - xh = 0.5 * x; - sum = 1.0; - pow = 1.0; - k = 0; - ds = 1.0; - while (ds > sum * EPSILON_RATIO) // FIXME: Shouldn't this stop after X iterations for max. safety? - { - ++k; - pow = pow * (xh / k); - ds = pow * pow; - sum = sum + ds; - } - - return sum; - } - - //static const float KAISER_ALPHA = 4.0; - static double kaiser(double alpha, double half_width, double x) - { - const double ratio = (x / half_width); - return bessel0(alpha * sqrt(1 - ratio * ratio)) / bessel0(alpha); - } - -#define KAISER_SUPPORT 3 - static float kaiser_filter(float t) - { - if (t < 0.0f) - t = -t; - - if (t < KAISER_SUPPORT) - { - // db atten - const float att = 40.0f; - const float alpha = (float)(exp(log((double)0.58417 * (att - 20.96)) * 0.4) + 0.07886 * (att - 20.96)); - //const float alpha = KAISER_ALPHA; - return (float)clean(sinc(t) * kaiser(alpha, KAISER_SUPPORT, t)); - } - - return 0.0f; - } - - const resample_filter g_resample_filters[] = - { - { "box", box_filter, BOX_FILTER_SUPPORT }, - { "tent", tent_filter, TENT_FILTER_SUPPORT }, - { "bell", bell_filter, BELL_SUPPORT }, - { "b-spline", B_spline_filter, B_SPLINE_SUPPORT }, - { "mitchell", mitchell_filter, MITCHELL_SUPPORT }, - { "blackman", blackman_filter, BLACKMAN_SUPPORT }, - { "lanczos3", lanczos3_filter, LANCZOS3_SUPPORT }, - { "lanczos4", lanczos4_filter, LANCZOS4_SUPPORT }, - { "lanczos6", lanczos6_filter, LANCZOS6_SUPPORT }, - { "lanczos12", lanczos12_filter, LANCZOS12_SUPPORT }, - { "kaiser", kaiser_filter, KAISER_SUPPORT }, - { "gaussian", gaussian_filter, GAUSSIAN_SUPPORT }, - { "catmullrom", catmull_rom_filter, CATMULL_ROM_SUPPORT }, - { "quadratic_interp", quadratic_interp_filter, QUADRATIC_SUPPORT }, - { "quadratic_approx", quadratic_approx_filter, QUADRATIC_SUPPORT }, - { "quadratic_mix", quadratic_mix_filter, QUADRATIC_SUPPORT }, - }; - - const int g_num_resample_filters = BASISU_ARRAY_SIZE(g_resample_filters); - - int find_resample_filter(const char *pName) - { - for (int i = 0; i < g_num_resample_filters; i++) - if (strcmp(pName, g_resample_filters[i].name) == 0) - return i; - return -1; - } -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_resampler.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_resampler.cpp deleted file mode 100644 index f4cedf003..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_resampler.cpp +++ /dev/null @@ -1,844 +0,0 @@ -// basisu_resampler.cpp -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_resampler.h" -#include "basisu_resampler_filters.h" - -#define RESAMPLER_DEBUG 0 - -namespace basisu -{ - static inline int resampler_range_check(int v, int h) - { - BASISU_NOTE_UNUSED(h); - assert((v >= 0) && (v < h)); - return v; - } - - // Float to int cast with truncation. - static inline int cast_to_int(Resample_Real i) - { - return (int)i; - } - - // Ensure that the contributing source sample is within bounds. If not, reflect, clamp, or wrap. - int Resampler::reflect(const int j, const int src_x, const Boundary_Op boundary_op) - { - int n; - - if (j < 0) - { - if (boundary_op == BOUNDARY_REFLECT) - { - n = -j; - - if (n >= src_x) - n = src_x - 1; - } - else if (boundary_op == BOUNDARY_WRAP) - n = posmod(j, src_x); - else - n = 0; - } - else if (j >= src_x) - { - if (boundary_op == BOUNDARY_REFLECT) - { - n = (src_x - j) + (src_x - 1); - - if (n < 0) - n = 0; - } - else if (boundary_op == BOUNDARY_WRAP) - n = posmod(j, src_x); - else - n = src_x - 1; - } - else - n = j; - - return n; - } - - // The make_clist() method generates, for all destination samples, - // the list of all source samples with non-zero weighted contributions. - Resampler::Contrib_List * Resampler::make_clist( - int src_x, int dst_x, Boundary_Op boundary_op, - Resample_Real(*Pfilter)(Resample_Real), - Resample_Real filter_support, - Resample_Real filter_scale, - Resample_Real src_ofs) - { - struct Contrib_Bounds - { - // The center of the range in DISCRETE coordinates (pixel center = 0.0f). - Resample_Real center; - int left, right; - }; - - int i, j, k, n, left, right; - Resample_Real total_weight; - Resample_Real xscale, center, half_width, weight; - Contrib_List* Pcontrib; - Contrib* Pcpool; - Contrib* Pcpool_next; - Contrib_Bounds* Pcontrib_bounds; - - if ((Pcontrib = (Contrib_List*)calloc(dst_x, sizeof(Contrib_List))) == NULL) - return NULL; - - Pcontrib_bounds = (Contrib_Bounds*)calloc(dst_x, sizeof(Contrib_Bounds)); - if (!Pcontrib_bounds) - { - free(Pcontrib); - return (NULL); - } - - const Resample_Real oo_filter_scale = 1.0f / filter_scale; - - const Resample_Real NUDGE = 0.5f; - xscale = dst_x / (Resample_Real)src_x; - - if (xscale < 1.0f) - { - int total; - (void)total; - - // Handle case when there are fewer destination samples than source samples (downsampling/minification). - - // stretched half width of filter - half_width = (filter_support / xscale) * filter_scale; - - // Find the range of source sample(s) that will contribute to each destination sample. - - for (i = 0, n = 0; i < dst_x; i++) - { - // Convert from discrete to continuous coordinates, scale, then convert back to discrete. - center = ((Resample_Real)i + NUDGE) / xscale; - center -= NUDGE; - center += src_ofs; - - left = cast_to_int((Resample_Real)floor(center - half_width)); - right = cast_to_int((Resample_Real)ceil(center + half_width)); - - Pcontrib_bounds[i].center = center; - Pcontrib_bounds[i].left = left; - Pcontrib_bounds[i].right = right; - - n += (right - left + 1); - } - - // Allocate memory for contributors. - - if ((n == 0) || ((Pcpool = (Contrib*)calloc(n, sizeof(Contrib))) == NULL)) - { - free(Pcontrib); - free(Pcontrib_bounds); - return NULL; - } - total = n; - - Pcpool_next = Pcpool; - - // Create the list of source samples which contribute to each destination sample. - - for (i = 0; i < dst_x; i++) - { - int max_k = -1; - Resample_Real max_w = -1e+20f; - - center = Pcontrib_bounds[i].center; - left = Pcontrib_bounds[i].left; - right = Pcontrib_bounds[i].right; - - Pcontrib[i].n = 0; - Pcontrib[i].p = Pcpool_next; - Pcpool_next += (right - left + 1); - assert((Pcpool_next - Pcpool) <= total); - - total_weight = 0; - - for (j = left; j <= right; j++) - total_weight += (*Pfilter)((center - (Resample_Real)j) * xscale * oo_filter_scale); - const Resample_Real norm = static_cast(1.0f / total_weight); - - total_weight = 0; - -#if RESAMPLER_DEBUG - printf("%i: ", i); -#endif - - for (j = left; j <= right; j++) - { - weight = (*Pfilter)((center - (Resample_Real)j) * xscale * oo_filter_scale) * norm; - if (weight == 0.0f) - continue; - - n = reflect(j, src_x, boundary_op); - -#if RESAMPLER_DEBUG - printf("%i(%f), ", n, weight); -#endif - - // Increment the number of source samples which contribute to the current destination sample. - - k = Pcontrib[i].n++; - - Pcontrib[i].p[k].pixel = (unsigned short)n; /* store src sample number */ - Pcontrib[i].p[k].weight = weight; /* store src sample weight */ - - total_weight += weight; /* total weight of all contributors */ - - if (weight > max_w) - { - max_w = weight; - max_k = k; - } - } - -#if RESAMPLER_DEBUG - printf("\n\n"); -#endif - - //assert(Pcontrib[i].n); - //assert(max_k != -1); - if ((max_k == -1) || (Pcontrib[i].n == 0)) - { - free(Pcpool); - free(Pcontrib); - free(Pcontrib_bounds); - return NULL; - } - - if (total_weight != 1.0f) - Pcontrib[i].p[max_k].weight += 1.0f - total_weight; - } - } - else - { - // Handle case when there are more destination samples than source samples (upsampling). - - half_width = filter_support * filter_scale; - - // Find the source sample(s) that contribute to each destination sample. - - for (i = 0, n = 0; i < dst_x; i++) - { - // Convert from discrete to continuous coordinates, scale, then convert back to discrete. - center = ((Resample_Real)i + NUDGE) / xscale; - center -= NUDGE; - center += src_ofs; - - left = cast_to_int((Resample_Real)floor(center - half_width)); - right = cast_to_int((Resample_Real)ceil(center + half_width)); - - Pcontrib_bounds[i].center = center; - Pcontrib_bounds[i].left = left; - Pcontrib_bounds[i].right = right; - - n += (right - left + 1); - } - - /* Allocate memory for contributors. */ - - int total = n; - if ((total == 0) || ((Pcpool = (Contrib*)calloc(total, sizeof(Contrib))) == NULL)) - { - free(Pcontrib); - free(Pcontrib_bounds); - return NULL; - } - - Pcpool_next = Pcpool; - - // Create the list of source samples which contribute to each destination sample. - - for (i = 0; i < dst_x; i++) - { - int max_k = -1; - Resample_Real max_w = -1e+20f; - - center = Pcontrib_bounds[i].center; - left = Pcontrib_bounds[i].left; - right = Pcontrib_bounds[i].right; - - Pcontrib[i].n = 0; - Pcontrib[i].p = Pcpool_next; - Pcpool_next += (right - left + 1); - assert((Pcpool_next - Pcpool) <= total); - - total_weight = 0; - for (j = left; j <= right; j++) - total_weight += (*Pfilter)((center - (Resample_Real)j) * oo_filter_scale); - - const Resample_Real norm = static_cast(1.0f / total_weight); - - total_weight = 0; - -#if RESAMPLER_DEBUG - printf("%i: ", i); -#endif - - for (j = left; j <= right; j++) - { - weight = (*Pfilter)((center - (Resample_Real)j) * oo_filter_scale) * norm; - if (weight == 0.0f) - continue; - - n = reflect(j, src_x, boundary_op); - -#if RESAMPLER_DEBUG - printf("%i(%f), ", n, weight); -#endif - - // Increment the number of source samples which contribute to the current destination sample. - - k = Pcontrib[i].n++; - - Pcontrib[i].p[k].pixel = (unsigned short)n; /* store src sample number */ - Pcontrib[i].p[k].weight = weight; /* store src sample weight */ - - total_weight += weight; /* total weight of all contributors */ - - if (weight > max_w) - { - max_w = weight; - max_k = k; - } - } - -#if RESAMPLER_DEBUG - printf("\n\n"); -#endif - - //assert(Pcontrib[i].n); - //assert(max_k != -1); - - if ((max_k == -1) || (Pcontrib[i].n == 0)) - { - free(Pcpool); - free(Pcontrib); - free(Pcontrib_bounds); - return NULL; - } - - if (total_weight != 1.0f) - Pcontrib[i].p[max_k].weight += 1.0f - total_weight; - } - } - -#if RESAMPLER_DEBUG - printf("*******\n"); -#endif - - free(Pcontrib_bounds); - - return Pcontrib; - } - - void Resampler::resample_x(Sample * Pdst, const Sample * Psrc) - { - assert(Pdst); - assert(Psrc); - - int i, j; - Sample total; - Contrib_List* Pclist = m_Pclist_x; - Contrib* p; - - for (i = m_resample_dst_x; i > 0; i--, Pclist++) - { -#if BASISU_RESAMPLER_DEBUG_OPS - total_ops += Pclist->n; -#endif - - for (j = Pclist->n, p = Pclist->p, total = 0; j > 0; j--, p++) - total += Psrc[p->pixel] * p->weight; - - *Pdst++ = total; - } - } - - void Resampler::scale_y_mov(Sample * Ptmp, const Sample * Psrc, Resample_Real weight, int dst_x) - { - int i; - -#if BASISU_RESAMPLER_DEBUG_OPS - total_ops += dst_x; -#endif - - // Not += because temp buf wasn't cleared. - for (i = dst_x; i > 0; i--) - * Ptmp++ = *Psrc++ * weight; - } - - void Resampler::scale_y_add(Sample * Ptmp, const Sample * Psrc, Resample_Real weight, int dst_x) - { -#if BASISU_RESAMPLER_DEBUG_OPS - total_ops += dst_x; -#endif - - for (int i = dst_x; i > 0; i--) - (*Ptmp++) += *Psrc++ * weight; - } - - void Resampler::clamp(Sample * Pdst, int n) - { - while (n > 0) - { - Sample x = *Pdst; - *Pdst++ = clamp_sample(x); - n--; - } - } - - void Resampler::resample_y(Sample * Pdst) - { - int i, j; - Sample* Psrc; - Contrib_List* Pclist = &m_Pclist_y[m_cur_dst_y]; - - Sample* Ptmp = m_delay_x_resample ? m_Ptmp_buf : Pdst; - assert(Ptmp); - - /* Process each contributor. */ - - for (i = 0; i < Pclist->n; i++) - { - // locate the contributor's location in the scan buffer -- the contributor must always be found! - for (j = 0; j < MAX_SCAN_BUF_SIZE; j++) - if (m_Pscan_buf->scan_buf_y[j] == Pclist->p[i].pixel) - break; - - assert(j < MAX_SCAN_BUF_SIZE); - - Psrc = m_Pscan_buf->scan_buf_l[j]; - - if (!i) - scale_y_mov(Ptmp, Psrc, Pclist->p[i].weight, m_intermediate_x); - else - scale_y_add(Ptmp, Psrc, Pclist->p[i].weight, m_intermediate_x); - - /* If this source line doesn't contribute to any - * more destination lines then mark the scanline buffer slot - * which holds this source line as free. - * (The max. number of slots used depends on the Y - * axis sampling factor and the scaled filter width.) - */ - - if (--m_Psrc_y_count[resampler_range_check(Pclist->p[i].pixel, m_resample_src_y)] == 0) - { - m_Psrc_y_flag[resampler_range_check(Pclist->p[i].pixel, m_resample_src_y)] = false; - m_Pscan_buf->scan_buf_y[j] = -1; - } - } - - /* Now generate the destination line */ - - if (m_delay_x_resample) // Was X resampling delayed until after Y resampling? - { - assert(Pdst != Ptmp); - resample_x(Pdst, Ptmp); - } - else - { - assert(Pdst == Ptmp); - } - - if (m_lo < m_hi) - clamp(Pdst, m_resample_dst_x); - } - - bool Resampler::put_line(const Sample * Psrc) - { - int i; - - if (m_cur_src_y >= m_resample_src_y) - return false; - - /* Does this source line contribute - * to any destination line? if not, - * exit now. - */ - - if (!m_Psrc_y_count[resampler_range_check(m_cur_src_y, m_resample_src_y)]) - { - m_cur_src_y++; - return true; - } - - /* Find an empty slot in the scanline buffer. (FIXME: Perf. is terrible here with extreme scaling ratios.) */ - - for (i = 0; i < MAX_SCAN_BUF_SIZE; i++) - if (m_Pscan_buf->scan_buf_y[i] == -1) - break; - - /* If the buffer is full, exit with an error. */ - - if (i == MAX_SCAN_BUF_SIZE) - { - m_status = STATUS_SCAN_BUFFER_FULL; - return false; - } - - m_Psrc_y_flag[resampler_range_check(m_cur_src_y, m_resample_src_y)] = true; - m_Pscan_buf->scan_buf_y[i] = m_cur_src_y; - - /* Does this slot have any memory allocated to it? */ - - if (!m_Pscan_buf->scan_buf_l[i]) - { - if ((m_Pscan_buf->scan_buf_l[i] = (Sample*)malloc(m_intermediate_x * sizeof(Sample))) == NULL) - { - m_status = STATUS_OUT_OF_MEMORY; - return false; - } - } - - // Resampling on the X axis first? - if (m_delay_x_resample) - { - assert(m_intermediate_x == m_resample_src_x); - - // Y-X resampling order - memcpy(m_Pscan_buf->scan_buf_l[i], Psrc, m_intermediate_x * sizeof(Sample)); - } - else - { - assert(m_intermediate_x == m_resample_dst_x); - - // X-Y resampling order - resample_x(m_Pscan_buf->scan_buf_l[i], Psrc); - } - - m_cur_src_y++; - - return true; - } - - const Resampler::Sample* Resampler::get_line() - { - int i; - - /* If all the destination lines have been - * generated, then always return NULL. - */ - - if (m_cur_dst_y == m_resample_dst_y) - return NULL; - - /* Check to see if all the required - * contributors are present, if not, - * return NULL. - */ - - for (i = 0; i < m_Pclist_y[m_cur_dst_y].n; i++) - if (!m_Psrc_y_flag[resampler_range_check(m_Pclist_y[m_cur_dst_y].p[i].pixel, m_resample_src_y)]) - return NULL; - - resample_y(m_Pdst_buf); - - m_cur_dst_y++; - - return m_Pdst_buf; - } - - Resampler::~Resampler() - { - int i; - -#if BASISU_RESAMPLER_DEBUG_OPS - printf("actual ops: %i\n", total_ops); -#endif - - free(m_Pdst_buf); - m_Pdst_buf = NULL; - - if (m_Ptmp_buf) - { - free(m_Ptmp_buf); - m_Ptmp_buf = NULL; - } - - /* Don't deallocate a contibutor list - * if the user passed us one of their own. - */ - - if ((m_Pclist_x) && (!m_clist_x_forced)) - { - free(m_Pclist_x->p); - free(m_Pclist_x); - m_Pclist_x = NULL; - } - - if ((m_Pclist_y) && (!m_clist_y_forced)) - { - free(m_Pclist_y->p); - free(m_Pclist_y); - m_Pclist_y = NULL; - } - - free(m_Psrc_y_count); - m_Psrc_y_count = NULL; - - free(m_Psrc_y_flag); - m_Psrc_y_flag = NULL; - - if (m_Pscan_buf) - { - for (i = 0; i < MAX_SCAN_BUF_SIZE; i++) - free(m_Pscan_buf->scan_buf_l[i]); - - free(m_Pscan_buf); - m_Pscan_buf = NULL; - } - } - - void Resampler::restart() - { - if (STATUS_OKAY != m_status) - return; - - m_cur_src_y = m_cur_dst_y = 0; - - int i, j; - for (i = 0; i < m_resample_src_y; i++) - { - m_Psrc_y_count[i] = 0; - m_Psrc_y_flag[i] = false; - } - - for (i = 0; i < m_resample_dst_y; i++) - { - for (j = 0; j < m_Pclist_y[i].n; j++) - m_Psrc_y_count[resampler_range_check(m_Pclist_y[i].p[j].pixel, m_resample_src_y)]++; - } - - for (i = 0; i < MAX_SCAN_BUF_SIZE; i++) - { - m_Pscan_buf->scan_buf_y[i] = -1; - - free(m_Pscan_buf->scan_buf_l[i]); - m_Pscan_buf->scan_buf_l[i] = NULL; - } - } - - Resampler::Resampler(int src_x, int src_y, - int dst_x, int dst_y, - Boundary_Op boundary_op, - Resample_Real sample_low, Resample_Real sample_high, - const char* Pfilter_name, - Contrib_List * Pclist_x, - Contrib_List * Pclist_y, - Resample_Real filter_x_scale, - Resample_Real filter_y_scale, - Resample_Real src_x_ofs, - Resample_Real src_y_ofs) - { - int i, j; - Resample_Real support, (*func)(Resample_Real); - - assert(src_x > 0); - assert(src_y > 0); - assert(dst_x > 0); - assert(dst_y > 0); - -#if BASISU_RESAMPLER_DEBUG_OPS - total_ops = 0; -#endif - - m_lo = sample_low; - m_hi = sample_high; - - m_delay_x_resample = false; - m_intermediate_x = 0; - m_Pdst_buf = NULL; - m_Ptmp_buf = NULL; - m_clist_x_forced = false; - m_Pclist_x = NULL; - m_clist_y_forced = false; - m_Pclist_y = NULL; - m_Psrc_y_count = NULL; - m_Psrc_y_flag = NULL; - m_Pscan_buf = NULL; - m_status = STATUS_OKAY; - - m_resample_src_x = src_x; - m_resample_src_y = src_y; - m_resample_dst_x = dst_x; - m_resample_dst_y = dst_y; - - m_boundary_op = boundary_op; - - if ((m_Pdst_buf = (Sample*)malloc(m_resample_dst_x * sizeof(Sample))) == NULL) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - - // Find the specified filter. - - if (Pfilter_name == NULL) - Pfilter_name = BASISU_RESAMPLER_DEFAULT_FILTER; - - for (i = 0; i < g_num_resample_filters; i++) - if (strcmp(Pfilter_name, g_resample_filters[i].name) == 0) - break; - - if (i == g_num_resample_filters) - { - m_status = STATUS_BAD_FILTER_NAME; - return; - } - - func = g_resample_filters[i].func; - support = g_resample_filters[i].support; - - /* Create contributor lists, unless the user supplied custom lists. */ - - if (!Pclist_x) - { - m_Pclist_x = make_clist(m_resample_src_x, m_resample_dst_x, m_boundary_op, func, support, filter_x_scale, src_x_ofs); - if (!m_Pclist_x) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - } - else - { - m_Pclist_x = Pclist_x; - m_clist_x_forced = true; - } - - if (!Pclist_y) - { - m_Pclist_y = make_clist(m_resample_src_y, m_resample_dst_y, m_boundary_op, func, support, filter_y_scale, src_y_ofs); - if (!m_Pclist_y) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - } - else - { - m_Pclist_y = Pclist_y; - m_clist_y_forced = true; - } - - if ((m_Psrc_y_count = (int*)calloc(m_resample_src_y, sizeof(int))) == NULL) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - - if ((m_Psrc_y_flag = (unsigned char*)calloc(m_resample_src_y, sizeof(unsigned char))) == NULL) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - - // Count how many times each source line contributes to a destination line. - - for (i = 0; i < m_resample_dst_y; i++) - for (j = 0; j < m_Pclist_y[i].n; j++) - m_Psrc_y_count[resampler_range_check(m_Pclist_y[i].p[j].pixel, m_resample_src_y)]++; - - if ((m_Pscan_buf = (Scan_Buf*)malloc(sizeof(Scan_Buf))) == NULL) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - - for (i = 0; i < MAX_SCAN_BUF_SIZE; i++) - { - m_Pscan_buf->scan_buf_y[i] = -1; - m_Pscan_buf->scan_buf_l[i] = NULL; - } - - m_cur_src_y = m_cur_dst_y = 0; - { - // Determine which axis to resample first by comparing the number of multiplies required - // for each possibility. - int x_ops = count_ops(m_Pclist_x, m_resample_dst_x); - int y_ops = count_ops(m_Pclist_y, m_resample_dst_y); - - // Hack 10/2000: Weight Y axis ops a little more than X axis ops. - // (Y axis ops use more cache resources.) - int xy_ops = x_ops * m_resample_src_y + - (4 * y_ops * m_resample_dst_x) / 3; - - int yx_ops = (4 * y_ops * m_resample_src_x) / 3 + - x_ops * m_resample_dst_y; - -#if BASISU_RESAMPLER_DEBUG_OPS - printf("src: %i %i\n", m_resample_src_x, m_resample_src_y); - printf("dst: %i %i\n", m_resample_dst_x, m_resample_dst_y); - printf("x_ops: %i\n", x_ops); - printf("y_ops: %i\n", y_ops); - printf("xy_ops: %i\n", xy_ops); - printf("yx_ops: %i\n", yx_ops); -#endif - - // Now check which resample order is better. In case of a tie, choose the order - // which buffers the least amount of data. - if ((xy_ops > yx_ops) || - ((xy_ops == yx_ops) && (m_resample_src_x < m_resample_dst_x))) - { - m_delay_x_resample = true; - m_intermediate_x = m_resample_src_x; - } - else - { - m_delay_x_resample = false; - m_intermediate_x = m_resample_dst_x; - } -#if BASISU_RESAMPLER_DEBUG_OPS - printf("delaying: %i\n", m_delay_x_resample); -#endif - } - - if (m_delay_x_resample) - { - if ((m_Ptmp_buf = (Sample*)malloc(m_intermediate_x * sizeof(Sample))) == NULL) - { - m_status = STATUS_OUT_OF_MEMORY; - return; - } - } - } - - void Resampler::get_clists(Contrib_List * *ptr_clist_x, Contrib_List * *ptr_clist_y) - { - if (ptr_clist_x) - * ptr_clist_x = m_Pclist_x; - - if (ptr_clist_y) - * ptr_clist_y = m_Pclist_y; - } - - int Resampler::get_filter_num() - { - return g_num_resample_filters; - } - - const char* Resampler::get_filter_name(int filter_num) - { - if ((filter_num < 0) || (filter_num >= g_num_resample_filters)) - return NULL; - else - return g_resample_filters[filter_num].name; - } - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_resampler.h b/WickedEngine/Utility/basis_universal/encoder/basisu_resampler.h deleted file mode 100644 index dc0978cae..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_resampler.h +++ /dev/null @@ -1,196 +0,0 @@ -// basisu_resampler.h -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "../transcoder/basisu.h" - -#define BASISU_RESAMPLER_DEBUG_OPS (0) -#define BASISU_RESAMPLER_DEFAULT_FILTER "lanczos4" -#define BASISU_RESAMPLER_MAX_DIMENSION (16384) - -namespace basisu -{ - // float or double - typedef float Resample_Real; - - class Resampler - { - public: - typedef Resample_Real Sample; - - struct Contrib - { - Resample_Real weight; - uint16_t pixel; - }; - - struct Contrib_List - { - uint16_t n; - Contrib *p; - }; - - enum Boundary_Op - { - BOUNDARY_WRAP = 0, - BOUNDARY_REFLECT = 1, - BOUNDARY_CLAMP = 2 - }; - - enum Status - { - STATUS_OKAY = 0, - STATUS_OUT_OF_MEMORY = 1, - STATUS_BAD_FILTER_NAME = 2, - STATUS_SCAN_BUFFER_FULL = 3 - }; - - // src_x/src_y - Input dimensions - // dst_x/dst_y - Output dimensions - // boundary_op - How to sample pixels near the image boundaries - // sample_low/sample_high - Clamp output samples to specified range, or disable clamping if sample_low >= sample_high - // Pclist_x/Pclist_y - Optional pointers to contributor lists from another instance of a Resampler - // src_x_ofs/src_y_ofs - Offset input image by specified amount (fractional values okay) - Resampler( - int src_x, int src_y, - int dst_x, int dst_y, - Boundary_Op boundary_op = BOUNDARY_CLAMP, - Resample_Real sample_low = 0.0f, Resample_Real sample_high = 0.0f, - const char *Pfilter_name = BASISU_RESAMPLER_DEFAULT_FILTER, - Contrib_List *Pclist_x = NULL, - Contrib_List *Pclist_y = NULL, - Resample_Real filter_x_scale = 1.0f, - Resample_Real filter_y_scale = 1.0f, - Resample_Real src_x_ofs = 0.0f, - Resample_Real src_y_ofs = 0.0f); - - ~Resampler(); - - // Reinits resampler so it can handle another frame. - void restart(); - - // false on out of memory. - bool put_line(const Sample *Psrc); - - // NULL if no scanlines are currently available (give the resampler more scanlines!) - const Sample *get_line(); - - Status status() const - { - return m_status; - } - - // Returned contributor lists can be shared with another Resampler. - void get_clists(Contrib_List **ptr_clist_x, Contrib_List **ptr_clist_y); - Contrib_List *get_clist_x() const - { - return m_Pclist_x; - } - Contrib_List *get_clist_y() const - { - return m_Pclist_y; - } - - // Filter accessors. - static int get_filter_num(); - static const char *get_filter_name(int filter_num); - - static Contrib_List *make_clist( - int src_x, int dst_x, Boundary_Op boundary_op, - Resample_Real(*Pfilter)(Resample_Real), - Resample_Real filter_support, - Resample_Real filter_scale, - Resample_Real src_ofs); - - private: - Resampler(); - Resampler(const Resampler &o); - Resampler &operator=(const Resampler &o); - -#ifdef BASISU_RESAMPLER_DEBUG_OPS - int total_ops; -#endif - - int m_intermediate_x; - - int m_resample_src_x; - int m_resample_src_y; - int m_resample_dst_x; - int m_resample_dst_y; - - Boundary_Op m_boundary_op; - - Sample *m_Pdst_buf; - Sample *m_Ptmp_buf; - - Contrib_List *m_Pclist_x; - Contrib_List *m_Pclist_y; - - bool m_clist_x_forced; - bool m_clist_y_forced; - - bool m_delay_x_resample; - - int *m_Psrc_y_count; - uint8_t *m_Psrc_y_flag; - - // The maximum number of scanlines that can be buffered at one time. - enum - { - MAX_SCAN_BUF_SIZE = BASISU_RESAMPLER_MAX_DIMENSION - }; - - struct Scan_Buf - { - int scan_buf_y[MAX_SCAN_BUF_SIZE]; - Sample *scan_buf_l[MAX_SCAN_BUF_SIZE]; - }; - - Scan_Buf *m_Pscan_buf; - - int m_cur_src_y; - int m_cur_dst_y; - - Status m_status; - - void resample_x(Sample *Pdst, const Sample *Psrc); - void scale_y_mov(Sample *Ptmp, const Sample *Psrc, Resample_Real weight, int dst_x); - void scale_y_add(Sample *Ptmp, const Sample *Psrc, Resample_Real weight, int dst_x); - void clamp(Sample *Pdst, int n); - void resample_y(Sample *Pdst); - - static int reflect(const int j, const int src_x, const Boundary_Op boundary_op); - - inline int count_ops(Contrib_List *Pclist, int k) - { - int i, t = 0; - for (i = 0; i < k; i++) - t += Pclist[i].n; - return (t); - } - - Resample_Real m_lo; - Resample_Real m_hi; - - inline Resample_Real clamp_sample(Resample_Real f) const - { - if (f < m_lo) - f = m_lo; - else if (f > m_hi) - f = m_hi; - return f; - } - }; - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_resampler_filters.h b/WickedEngine/Utility/basis_universal/encoder/basisu_resampler_filters.h deleted file mode 100644 index 0ebb51c33..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_resampler_filters.h +++ /dev/null @@ -1,35 +0,0 @@ -// basisu_resampler_filters.h -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once - -#include "../transcoder/basisu.h" - -namespace basisu -{ - typedef float (*resample_filter_func)(float t); - - struct resample_filter - { - const char *name; - resample_filter_func func; - float support; - }; - - extern const resample_filter g_resample_filters[]; - extern const int g_num_resample_filters; - - int find_resample_filter(const char *pName); - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_ssim.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_ssim.cpp deleted file mode 100644 index cceb400b8..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_ssim.cpp +++ /dev/null @@ -1,408 +0,0 @@ -// basisu_ssim.cpp -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_ssim.h" - -#ifndef M_PI -#define M_PI 3.14159265358979323846 -#endif - -namespace basisu -{ - float gauss(int x, int y, float sigma_sqr) - { - float pow = expf(-((x * x + y * y) / (2.0f * sigma_sqr))); - float g = (1.0f / (sqrtf((float)(2.0f * M_PI * sigma_sqr)))) * pow; - return g; - } - - // size_x/y should be odd - void compute_gaussian_kernel(float *pDst, int size_x, int size_y, float sigma_sqr, uint32_t flags) - { - assert(size_x & size_y & 1); - - if (!(size_x | size_y)) - return; - - int mid_x = size_x / 2; - int mid_y = size_y / 2; - - double sum = 0; - for (int x = 0; x < size_x; x++) - { - for (int y = 0; y < size_y; y++) - { - float g; - if ((x > mid_x) && (y < mid_y)) - g = pDst[(size_x - x - 1) + y * size_x]; - else if ((x < mid_x) && (y > mid_y)) - g = pDst[x + (size_y - y - 1) * size_x]; - else if ((x > mid_x) && (y > mid_y)) - g = pDst[(size_x - x - 1) + (size_y - y - 1) * size_x]; - else - g = gauss(x - mid_x, y - mid_y, sigma_sqr); - - pDst[x + y * size_x] = g; - sum += g; - } - } - - if (flags & cComputeGaussianFlagNormalizeCenterToOne) - { - sum = pDst[mid_x + mid_y * size_x]; - } - - if (flags & (cComputeGaussianFlagNormalizeCenterToOne | cComputeGaussianFlagNormalize)) - { - double one_over_sum = 1.0f / sum; - for (int i = 0; i < size_x * size_y; i++) - pDst[i] = static_cast(pDst[i] * one_over_sum); - - if (flags & cComputeGaussianFlagNormalizeCenterToOne) - pDst[mid_x + mid_y * size_x] = 1.0f; - } - - if (flags & cComputeGaussianFlagPrint) - { - printf("{\n"); - for (int y = 0; y < size_y; y++) - { - printf(" "); - for (int x = 0; x < size_x; x++) - { - printf("%f, ", pDst[x + y * size_x]); - } - printf("\n"); - } - printf("}"); - } - } - - void gaussian_filter(imagef &dst, const imagef &orig_img, uint32_t odd_filter_width, float sigma_sqr, bool wrapping, uint32_t width_divisor, uint32_t height_divisor) - { - assert(odd_filter_width && (odd_filter_width & 1)); - odd_filter_width |= 1; - - vector2D kernel(odd_filter_width, odd_filter_width); - compute_gaussian_kernel(kernel.get_ptr(), odd_filter_width, odd_filter_width, sigma_sqr, cComputeGaussianFlagNormalize); - - const int dst_width = orig_img.get_width() / width_divisor; - const int dst_height = orig_img.get_height() / height_divisor; - - const int H = odd_filter_width / 2; - const int L = -H; - - dst.crop(dst_width, dst_height); - -//#pragma omp parallel for - for (int oy = 0; oy < dst_height; oy++) - { - for (int ox = 0; ox < dst_width; ox++) - { - vec4F c(0.0f); - - for (int yd = L; yd <= H; yd++) - { - int y = oy * height_divisor + (height_divisor >> 1) + yd; - - for (int xd = L; xd <= H; xd++) - { - int x = ox * width_divisor + (width_divisor >> 1) + xd; - - const vec4F &p = orig_img.get_clamped_or_wrapped(x, y, wrapping, wrapping); - - float w = kernel(xd + H, yd + H); - c[0] += p[0] * w; - c[1] += p[1] * w; - c[2] += p[2] * w; - c[3] += p[3] * w; - } - } - - dst(ox, oy).set(c[0], c[1], c[2], c[3]); - } - } - } - - void pow_image(const imagef &src, imagef &dst, const vec4F &power) - { - dst.resize(src); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &p = src(x, y); - - if ((power[0] == 2.0f) && (power[1] == 2.0f) && (power[2] == 2.0f) && (power[3] == 2.0f)) - dst(x, y).set(p[0] * p[0], p[1] * p[1], p[2] * p[2], p[3] * p[3]); - else - dst(x, y).set(powf(p[0], power[0]), powf(p[1], power[1]), powf(p[2], power[2]), powf(p[3], power[3])); - } - } - } - - void mul_image(const imagef &src, imagef &dst, const vec4F &mul) - { - dst.resize(src); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &p = src(x, y); - dst(x, y).set(p[0] * mul[0], p[1] * mul[1], p[2] * mul[2], p[3] * mul[3]); - } - } - } - - void scale_image(const imagef &src, imagef &dst, const vec4F &scale, const vec4F &shift) - { - dst.resize(src); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &p = src(x, y); - - vec4F d; - - for (uint32_t c = 0; c < 4; c++) - d[c] = scale[c] * p[c] + shift[c]; - - dst(x, y).set(d[0], d[1], d[2], d[3]); - } - } - } - - void add_weighted_image(const imagef &src1, const vec4F &alpha, const imagef &src2, const vec4F &beta, const vec4F &gamma, imagef &dst) - { - dst.resize(src1); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &s1 = src1(x, y); - const vec4F &s2 = src2(x, y); - - dst(x, y).set( - s1[0] * alpha[0] + s2[0] * beta[0] + gamma[0], - s1[1] * alpha[1] + s2[1] * beta[1] + gamma[1], - s1[2] * alpha[2] + s2[2] * beta[2] + gamma[2], - s1[3] * alpha[3] + s2[3] * beta[3] + gamma[3]); - } - } - } - - void add_image(const imagef &src1, const imagef &src2, imagef &dst) - { - dst.resize(src1); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &s1 = src1(x, y); - const vec4F &s2 = src2(x, y); - - dst(x, y).set(s1[0] + s2[0], s1[1] + s2[1], s1[2] + s2[2], s1[3] + s2[3]); - } - } - } - - void adds_image(const imagef &src, const vec4F &value, imagef &dst) - { - dst.resize(src); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &p = src(x, y); - - dst(x, y).set(p[0] + value[0], p[1] + value[1], p[2] + value[2], p[3] + value[3]); - } - } - } - - void mul_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale) - { - dst.resize(src1); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &s1 = src1(x, y); - const vec4F &s2 = src2(x, y); - - vec4F d; - - for (uint32_t c = 0; c < 4; c++) - { - float v1 = s1[c]; - float v2 = s2[c]; - d[c] = v1 * v2 * scale[c]; - } - - dst(x, y) = d; - } - } - } - - void div_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale) - { - dst.resize(src1); - -//#pragma omp parallel for - for (int y = 0; y < (int)dst.get_height(); y++) - { - for (uint32_t x = 0; x < dst.get_width(); x++) - { - const vec4F &s1 = src1(x, y); - const vec4F &s2 = src2(x, y); - - vec4F d; - - for (uint32_t c = 0; c < 4; c++) - { - float v = s2[c]; - if (v == 0.0f) - d[c] = 0.0f; - else - d[c] = (s1[c] * scale[c]) / v; - } - - dst(x, y) = d; - } - } - } - - vec4F avg_image(const imagef &src) - { - vec4F avg(0.0f); - - for (uint32_t y = 0; y < src.get_height(); y++) - { - for (uint32_t x = 0; x < src.get_width(); x++) - { - const vec4F &s = src(x, y); - - avg += vec4F(s[0], s[1], s[2], s[3]); - } - } - - avg /= static_cast(src.get_total_pixels()); - - return avg; - } - - // Reference: https://ece.uwaterloo.ca/~z70wang/research/ssim/index.html - vec4F compute_ssim(const imagef &a, const imagef &b) - { - imagef axb, a_sq, b_sq, mu1, mu2, mu1_sq, mu2_sq, mu1_mu2, s1_sq, s2_sq, s12, smap, t1, t2, t3; - - const float C1 = 6.50250f, C2 = 58.52250f; - - pow_image(a, a_sq, vec4F(2)); - pow_image(b, b_sq, vec4F(2)); - mul_image(a, b, axb, vec4F(1.0f)); - - gaussian_filter(mu1, a, 11, 1.5f * 1.5f); - gaussian_filter(mu2, b, 11, 1.5f * 1.5f); - - pow_image(mu1, mu1_sq, vec4F(2)); - pow_image(mu2, mu2_sq, vec4F(2)); - mul_image(mu1, mu2, mu1_mu2, vec4F(1.0f)); - - gaussian_filter(s1_sq, a_sq, 11, 1.5f * 1.5f); - add_weighted_image(s1_sq, vec4F(1), mu1_sq, vec4F(-1), vec4F(0), s1_sq); - - gaussian_filter(s2_sq, b_sq, 11, 1.5f * 1.5f); - add_weighted_image(s2_sq, vec4F(1), mu2_sq, vec4F(-1), vec4F(0), s2_sq); - - gaussian_filter(s12, axb, 11, 1.5f * 1.5f); - add_weighted_image(s12, vec4F(1), mu1_mu2, vec4F(-1), vec4F(0), s12); - - scale_image(mu1_mu2, t1, vec4F(2), vec4F(0)); - adds_image(t1, vec4F(C1), t1); - - scale_image(s12, t2, vec4F(2), vec4F(0)); - adds_image(t2, vec4F(C2), t2); - - mul_image(t1, t2, t3, vec4F(1)); - - add_image(mu1_sq, mu2_sq, t1); - adds_image(t1, vec4F(C1), t1); - - add_image(s1_sq, s2_sq, t2); - adds_image(t2, vec4F(C2), t2); - - mul_image(t1, t2, t1, vec4F(1)); - - div_image(t3, t1, smap, vec4F(1)); - - return avg_image(smap); - } - - vec4F compute_ssim(const image &a, const image &b, bool luma, bool luma_601) - { - image ta(a), tb(b); - - if ((ta.get_width() != tb.get_width()) || (ta.get_height() != tb.get_height())) - { - debug_printf("compute_ssim: Cropping input images to equal dimensions\n"); - - const uint32_t w = minimum(a.get_width(), b.get_width()); - const uint32_t h = minimum(a.get_height(), b.get_height()); - ta.crop(w, h); - tb.crop(w, h); - } - - if (!ta.get_width() || !ta.get_height()) - { - assert(0); - return vec4F(0); - } - - if (luma) - { - for (uint32_t y = 0; y < ta.get_height(); y++) - { - for (uint32_t x = 0; x < ta.get_width(); x++) - { - ta(x, y).set(ta(x, y).get_luma(luma_601), ta(x, y).a); - tb(x, y).set(tb(x, y).get_luma(luma_601), tb(x, y).a); - } - } - } - - imagef fta, ftb; - - fta.set(ta); - ftb.set(tb); - - return compute_ssim(fta, ftb); - } - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_ssim.h b/WickedEngine/Utility/basis_universal/encoder/basisu_ssim.h deleted file mode 100644 index 986ca3bbd..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_ssim.h +++ /dev/null @@ -1,44 +0,0 @@ -// basisu_ssim.h -// Copyright (C) 2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_enc.h" - -namespace basisu -{ - float gauss(int x, int y, float sigma_sqr); - - enum - { - cComputeGaussianFlagNormalize = 1, - cComputeGaussianFlagPrint = 2, - cComputeGaussianFlagNormalizeCenterToOne = 4 - }; - - void compute_gaussian_kernel(float *pDst, int size_x, int size_y, float sigma_sqr, uint32_t flags = 0); - - void scale_image(const imagef &src, imagef &dst, const vec4F &scale, const vec4F &shift); - void add_weighted_image(const imagef &src1, const vec4F &alpha, const imagef &src2, const vec4F &beta, const vec4F &gamma, imagef &dst); - void add_image(const imagef &src1, const imagef &src2, imagef &dst); - void adds_image(const imagef &src, const vec4F &value, imagef &dst); - void mul_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale); - void div_image(const imagef &src1, const imagef &src2, imagef &dst, const vec4F &scale); - vec4F avg_image(const imagef &src); - - void gaussian_filter(imagef &dst, const imagef &orig_img, uint32_t odd_filter_width, float sigma_sqr, bool wrapping = false, uint32_t width_divisor = 1, uint32_t height_divisor = 1); - - vec4F compute_ssim(const imagef &a, const imagef &b); - vec4F compute_ssim(const image &a, const image &b, bool luma, bool luma_601); - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_uastc_enc.cpp b/WickedEngine/Utility/basis_universal/encoder/basisu_uastc_enc.cpp deleted file mode 100644 index 271bbc6f1..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_uastc_enc.cpp +++ /dev/null @@ -1,4195 +0,0 @@ -// basisu_uastc_enc.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include "basisu_uastc_enc.h" - -#if BASISU_USE_ASTC_DECOMPRESS -#include "basisu_astc_decomp.h" -#endif - -#include "basisu_gpu_texture.h" -#include "basisu_bc7enc.h" - -#ifdef _DEBUG -// When BASISU_VALIDATE_UASTC_ENC is 1, we pack and unpack to/from UASTC and ASTC, then validate that each codec returns the exact same results. This is slower. -#define BASISU_VALIDATE_UASTC_ENC 1 -#endif - -#define BASISU_SUPPORT_FORCE_MODE 0 - -using namespace basist; - -namespace basisu -{ - const uint32_t MAX_ENCODE_RESULTS = 512; - -#if BASISU_VALIDATE_UASTC_ENC - static void validate_func(bool condition, int line) - { - if (!condition) - { - fprintf(stderr, "basisu_uastc_enc: Internal validation failed on line %u!\n", line); - } - } - - #define VALIDATE(c) validate_func(c, __LINE__); -#else - #define VALIDATE(c) -#endif - - enum dxt_constants - { - cDXT1SelectorBits = 2U, cDXT1SelectorValues = 1U << cDXT1SelectorBits, cDXT1SelectorMask = cDXT1SelectorValues - 1U, - cDXT5SelectorBits = 3U, cDXT5SelectorValues = 1U << cDXT5SelectorBits, cDXT5SelectorMask = cDXT5SelectorValues - 1U, - }; - - struct dxt1_block - { - enum { cTotalEndpointBytes = 2, cTotalSelectorBytes = 4 }; - - uint8_t m_low_color[cTotalEndpointBytes]; - uint8_t m_high_color[cTotalEndpointBytes]; - uint8_t m_selectors[cTotalSelectorBytes]; - - inline void clear() { basisu::clear_obj(*this); } - - inline uint32_t get_high_color() const { return m_high_color[0] | (m_high_color[1] << 8U); } - inline uint32_t get_low_color() const { return m_low_color[0] | (m_low_color[1] << 8U); } - inline void set_low_color(uint16_t c) { m_low_color[0] = static_cast(c & 0xFF); m_low_color[1] = static_cast((c >> 8) & 0xFF); } - inline void set_high_color(uint16_t c) { m_high_color[0] = static_cast(c & 0xFF); m_high_color[1] = static_cast((c >> 8) & 0xFF); } - inline uint32_t get_selector(uint32_t x, uint32_t y) const { assert((x < 4U) && (y < 4U)); return (m_selectors[y] >> (x * cDXT1SelectorBits))& cDXT1SelectorMask; } - inline void set_selector(uint32_t x, uint32_t y, uint32_t val) { assert((x < 4U) && (y < 4U) && (val < 4U)); m_selectors[y] &= (~(cDXT1SelectorMask << (x * cDXT1SelectorBits))); m_selectors[y] |= (val << (x * cDXT1SelectorBits)); } - - static uint16_t pack_color(const color_rgba& color, bool scaled, uint32_t bias = 127U) - { - uint32_t r = color.r, g = color.g, b = color.b; - if (scaled) - { - r = (r * 31U + bias) / 255U; - g = (g * 63U + bias) / 255U; - b = (b * 31U + bias) / 255U; - } - return static_cast(basisu::minimum(b, 31U) | (basisu::minimum(g, 63U) << 5U) | (basisu::minimum(r, 31U) << 11U)); - } - - static uint16_t pack_unscaled_color(uint32_t r, uint32_t g, uint32_t b) { return static_cast(b | (g << 5U) | (r << 11U)); } - }; - -#define UASTC_WRITE_MODE_DESCS 0 - - static inline void uastc_write_bits(uint8_t* pBuf, uint32_t& bit_offset, uint64_t code, uint32_t codesize, const char* pDesc) - { - (void)pDesc; - -#if UASTC_WRITE_MODE_DESCS - if (pDesc) - printf("%s: %u %u\n", pDesc, bit_offset, codesize); -#endif - - assert((codesize == 64) || (code < (1ULL << codesize))); - - while (codesize) - { - uint32_t byte_bit_offset = bit_offset & 7; - uint32_t bits_to_write = basisu::minimum(codesize, 8 - byte_bit_offset); - - pBuf[bit_offset >> 3] |= (code << byte_bit_offset); - - code >>= bits_to_write; - codesize -= bits_to_write; - bit_offset += bits_to_write; - } - } - - void pack_uastc(basist::uastc_block& blk, const uastc_encode_results& result, const etc_block& etc1_blk, uint32_t etc1_bias, const eac_a8_block& etc_eac_a8_blk, bool bc1_hint0, bool bc1_hint1) - { - if ((g_uastc_mode_has_alpha[result.m_uastc_mode]) && (result.m_uastc_mode != UASTC_MODE_INDEX_SOLID_COLOR)) - { - assert(etc_eac_a8_blk.m_multiplier >= 1); - } - - uint8_t buf[32]; - memset(buf, 0, sizeof(buf)); - - uint32_t block_bit_offset = 0; - -#if UASTC_WRITE_MODE_DESCS - printf("**** Mode: %u\n", result.m_uastc_mode); -#endif - - uastc_write_bits(buf, block_bit_offset, g_uastc_mode_huff_codes[result.m_uastc_mode][0], g_uastc_mode_huff_codes[result.m_uastc_mode][1], "mode"); - - if (result.m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - uastc_write_bits(buf, block_bit_offset, result.m_solid_color.r, 8, "R"); - uastc_write_bits(buf, block_bit_offset, result.m_solid_color.g, 8, "G"); - uastc_write_bits(buf, block_bit_offset, result.m_solid_color.b, 8, "B"); - uastc_write_bits(buf, block_bit_offset, result.m_solid_color.a, 8, "A"); - - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_diff_bit(), 1, "ETC1D"); - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_inten_table(0), 3, "ETC1I"); - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_selector(0, 0), 2, "ETC1S"); - - uint32_t r, g, b; - if (etc1_blk.get_diff_bit()) - etc_block::unpack_color5(r, g, b, etc1_blk.get_base5_color(), false); - else - etc_block::unpack_color4(r, g, b, etc1_blk.get_base4_color(0), false); - - uastc_write_bits(buf, block_bit_offset, r, 5, "ETC1R"); - uastc_write_bits(buf, block_bit_offset, g, 5, "ETC1G"); - uastc_write_bits(buf, block_bit_offset, b, 5, "ETC1B"); - - memcpy(&blk, buf, sizeof(blk)); - return; - } - - if (g_uastc_mode_has_bc1_hint0[result.m_uastc_mode]) - uastc_write_bits(buf, block_bit_offset, bc1_hint0, 1, "BC1H0"); - else - { - assert(bc1_hint0 == false); - } - - if (g_uastc_mode_has_bc1_hint1[result.m_uastc_mode]) - uastc_write_bits(buf, block_bit_offset, bc1_hint1, 1, "BC1H1"); - else - { - assert(bc1_hint1 == false); - } - - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_flip_bit(), 1, "ETC1F"); - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_diff_bit(), 1, "ETC1D"); - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_inten_table(0), 3, "ETC1I0"); - uastc_write_bits(buf, block_bit_offset, etc1_blk.get_inten_table(1), 3, "ETC1I1"); - - if (g_uastc_mode_has_etc1_bias[result.m_uastc_mode]) - uastc_write_bits(buf, block_bit_offset, etc1_bias, 5, "ETC1BIAS"); - else - { - assert(etc1_bias == 0); - } - - if (g_uastc_mode_has_alpha[result.m_uastc_mode]) - { - const uint32_t etc2_hints = etc_eac_a8_blk.m_table | (etc_eac_a8_blk.m_multiplier << 4); - - assert(etc2_hints > 0 && etc2_hints <= 0xFF); - uastc_write_bits(buf, block_bit_offset, etc2_hints, 8, "ETC2TM"); - } - - uint32_t subsets = 1; - switch (result.m_uastc_mode) - { - case 2: - case 4: - case 7: - case 9: - case 16: - uastc_write_bits(buf, block_bit_offset, result.m_common_pattern, 5, "PAT"); - subsets = 2; - break; - case 3: - uastc_write_bits(buf, block_bit_offset, result.m_common_pattern, 4, "PAT"); - subsets = 3; - break; - default: - break; - } - -#ifdef _DEBUG - uint32_t part_seed = 0; - switch (result.m_uastc_mode) - { - case 2: - case 4: - case 9: - case 16: - part_seed = g_astc_bc7_common_partitions2[result.m_common_pattern].m_astc; - break; - case 3: - part_seed = g_astc_bc7_common_partitions3[result.m_common_pattern].m_astc; - break; - case 7: - part_seed = g_bc7_3_astc2_common_partitions[result.m_common_pattern].m_astc2; - break; - default: - break; - } -#endif - - uint32_t total_planes = 1; - switch (result.m_uastc_mode) - { - case 6: - case 11: - case 13: - uastc_write_bits(buf, block_bit_offset, result.m_astc.m_ccs, 2, "COMPSEL"); - total_planes = 2; - break; - case 17: - // CCS field is always 3 for dual plane LA. - assert(result.m_astc.m_ccs == 3); - total_planes = 2; - break; - default: - break; - } - - uint8_t weights[32]; - memcpy(weights, result.m_astc.m_weights, 16 * total_planes); - - uint8_t endpoints[18]; - memcpy(endpoints, result.m_astc.m_endpoints, sizeof(endpoints)); - - const uint32_t total_comps = g_uastc_mode_comps[result.m_uastc_mode]; - - // LLAA - // LLAA LLAA - // LLAA LLAA LLAA - // RRGGBB - // RRGGBB RRGGBB - // RRGGBB RRGGBB RRGGBB - // RRGGBBAA - // RRGGBBAA RRGGBBAA - - const uint32_t weight_bits = g_uastc_mode_weight_bits[result.m_uastc_mode]; - - const uint8_t* pPartition_pattern; - const uint8_t* pSubset_anchor_indices = basist::get_anchor_indices(subsets, result.m_uastc_mode, result.m_common_pattern, pPartition_pattern); - - for (uint32_t plane_index = 0; plane_index < total_planes; plane_index++) - { - for (uint32_t subset_index = 0; subset_index < subsets; subset_index++) - { - const uint32_t anchor_index = pSubset_anchor_indices[subset_index]; - -#ifdef _DEBUG - if (subsets >= 2) - { - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t part_index = astc_compute_texel_partition(part_seed, i & 3, i >> 2, 0, subsets, true); - if (part_index == subset_index) - { - assert(anchor_index == i); - break; - } - } - } - else - { - assert(!anchor_index); - } -#endif - - // Check anchor weight's MSB - if it's set then invert this subset's weights and swap the endpoints - if (weights[anchor_index * total_planes + plane_index] & (1 << (weight_bits - 1))) - { - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t part_index = pPartition_pattern[i]; - -#ifdef _DEBUG - if (subsets >= 2) - { - assert(part_index == (uint32_t)astc_compute_texel_partition(part_seed, i & 3, i >> 2, 0, subsets, true)); - } - else - { - assert(!part_index); - } -#endif - - if (part_index == subset_index) - weights[i * total_planes + plane_index] = ((1 << weight_bits) - 1) - weights[i * total_planes + plane_index]; - } - - if (total_planes == 2) - { - for (int c = 0; c < (int)total_comps; c++) - { - const uint32_t comp_plane = (total_comps == 2) ? c : ((c == result.m_astc.m_ccs) ? 1 : 0); - - if (comp_plane == plane_index) - std::swap(endpoints[c * 2 + 0], endpoints[c * 2 + 1]); - } - } - else - { - for (uint32_t c = 0; c < total_comps; c++) - std::swap(endpoints[subset_index * total_comps * 2 + c * 2 + 0], endpoints[subset_index * total_comps * 2 + c * 2 + 1]); - } - } - } // subset_index - } // plane_index - - const uint32_t total_values = total_comps * 2 * subsets; - const uint32_t endpoint_range = g_uastc_mode_endpoint_ranges[result.m_uastc_mode]; - - uint32_t bit_values[18]; - uint32_t tq_values[8]; - uint32_t total_tq_values = 0; - uint32_t tq_accum = 0; - uint32_t tq_mul = 1; - - const uint32_t ep_bits = g_astc_bise_range_table[endpoint_range][0]; - const uint32_t ep_trits = g_astc_bise_range_table[endpoint_range][1]; - const uint32_t ep_quints = g_astc_bise_range_table[endpoint_range][2]; - - for (uint32_t i = 0; i < total_values; i++) - { - uint32_t val = endpoints[i]; - - uint32_t bits = val & ((1 << ep_bits) - 1); - uint32_t tq = val >> ep_bits; - - bit_values[i] = bits; - - if (ep_trits) - { - assert(tq < 3); - tq_accum += tq * tq_mul; - tq_mul *= 3; - if (tq_mul == 243) - { - tq_values[total_tq_values++] = tq_accum; - tq_accum = 0; - tq_mul = 1; - } - } - else if (ep_quints) - { - assert(tq < 5); - tq_accum += tq * tq_mul; - tq_mul *= 5; - if (tq_mul == 125) - { - tq_values[total_tq_values++] = tq_accum; - tq_accum = 0; - tq_mul = 1; - } - } - } - - uint32_t total_endpoint_bits = 0; - - for (uint32_t i = 0; i < total_tq_values; i++) - { - const uint32_t num_bits = ep_trits ? 8 : 7; - uastc_write_bits(buf, block_bit_offset, tq_values[i], num_bits, "ETQ"); - total_endpoint_bits += num_bits; - } - - if (tq_mul > 1) - { - uint32_t num_bits; - if (ep_trits) - { - if (tq_mul == 3) - num_bits = 2; - else if (tq_mul == 9) - num_bits = 4; - else if (tq_mul == 27) - num_bits = 5; - else //if (tq_mul == 81) - num_bits = 7; - } - else - { - if (tq_mul == 5) - num_bits = 3; - else //if (tq_mul == 25) - num_bits = 5; - } - uastc_write_bits(buf, block_bit_offset, tq_accum, num_bits, "ETQ"); - total_endpoint_bits += num_bits; - } - - for (uint32_t i = 0; i < total_values; i++) - { - uastc_write_bits(buf, block_bit_offset, bit_values[i], ep_bits, "EBITS"); - total_endpoint_bits += ep_bits; - } - -#if UASTC_WRITE_MODE_DESCS - uint32_t weight_start = block_bit_offset; -#endif - - uint32_t total_weight_bits = 0; - const uint32_t plane_shift = (total_planes == 2) ? 1 : 0; - for (uint32_t i = 0; i < 16 * total_planes; i++) - { - uint32_t numbits = weight_bits; - for (uint32_t s = 0; s < subsets; s++) - { - if (pSubset_anchor_indices[s] == (i >> plane_shift)) - { - numbits--; - break; - } - } - - uastc_write_bits(buf, block_bit_offset, weights[i], numbits, nullptr); - - total_weight_bits += numbits; - } - -#if UASTC_WRITE_MODE_DESCS - printf("WEIGHTS: %u %u\n", weight_start, total_weight_bits); -#endif - - assert(block_bit_offset <= 128); - memcpy(&blk, buf, sizeof(blk)); - -#if UASTC_WRITE_MODE_DESCS - printf("Total bits: %u, endpoint bits: %u, weight bits: %u\n", block_bit_offset, total_endpoint_bits, total_weight_bits); -#endif - } - - // MODE 0 - // 0. DualPlane: 0, WeightRange: 8 (16), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 19 (192) MODE6 RGB - // 18. DualPlane: 0, WeightRange: 11 (32), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 11 (32) MODE6 RGB - static void astc_mode0_or_18(uint32_t mode, const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, const uint8_t *pForce_selectors = nullptr) - { - const uint32_t endpoint_range = (mode == 18) ? 11 : 19; - const uint32_t weight_range = (mode == 18) ? 11 : 8; - - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - ccell_params.m_num_pixels = 16; - ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_num_selector_weights = (mode == 18) ? 32 : 16; - ccell_params.m_pSelector_weights = (mode == 18) ? g_astc_weights5 : g_astc_weights4; - ccell_params.m_pSelector_weightsx = (mode == 18) ? (const bc7enc_vec4F*)g_astc_weights5x : (const bc7enc_vec4F*)g_astc_weights4x; - ccell_params.m_astc_endpoint_range = endpoint_range; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - ccell_params.m_pForce_selectors = pForce_selectors; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = weight_range;// (mode == 18) ? 11 : 8; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 1; - astc_results.m_partition_seed = 0; - astc_results.m_cem = 8; - - astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; - - bool invert = false; - - if (pForce_selectors == nullptr) - { - int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - invert = true; - } - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - if (invert) - astc_results.m_weights[x + y * 4] = ((mode == 18) ? 31 : 15) - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = mode; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = part_err; - total_results++; - } - } - - // MODE 1 - // 1-subset, 2-bit indices, 8-bit endpoints, BC7 mode 3 - // DualPlane: 0, WeightRange: 2 (4), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 20 (256) MODE3 or MODE5 RGB - static void astc_mode1(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - ccell_params.m_num_pixels = 16; - ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_num_selector_weights = 4; - ccell_params.m_pSelector_weights = g_bc7_weights2; - ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params.m_astc_endpoint_range = 20; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = 2; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 1; - astc_results.m_partition_seed = 0; - astc_results.m_cem = 8; - - astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; - - const uint32_t range = 20; - - bool invert = false; - - int s0 = g_astc_unquant[range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - if (invert) - astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 1; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = part_err; - total_results++; - } - } - - static uint32_t estimate_partition2(uint32_t num_weights, uint32_t num_comps, const uint32_t* pWeights, const color_rgba block[4][4], const uint32_t weights[4]) - { - assert(pWeights[0] == 0 && pWeights[num_weights - 1] == 64); - - uint64_t best_err = UINT64_MAX; - uint32_t best_common_pattern = 0; - - for (uint32_t common_pattern = 0; common_pattern < TOTAL_ASTC_BC7_COMMON_PARTITIONS2; common_pattern++) - { - const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; - - const uint8_t* pPartition = &g_bc7_partition2[bc7_pattern * 16]; - - color_quad_u8 subset_colors[2][16]; - uint32_t subset_total_colors[2] = { 0, 0 }; - for (uint32_t index = 0; index < 16; index++) - subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; - - uint64_t total_subset_err = 0; - for (uint32_t subset = 0; (subset < 2) && (total_subset_err < best_err); subset++) - total_subset_err += color_cell_compression_est_astc(num_weights, num_comps, pWeights, subset_total_colors[subset], &subset_colors[subset][0], best_err, weights); - - if (total_subset_err < best_err) - { - best_err = total_subset_err; - best_common_pattern = common_pattern; - } - } - - return best_common_pattern; - } - - // MODE 2 - // 2-subset, 3-bit indices, 4-bit endpoints, BC7 mode 1 - // DualPlane: 0, WeightRange: 5 (8), Subsets: 2, CEM: 8 (RGB Direct ), EndpointRange: 8 (16) MODE1 - static void astc_mode2(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) - { - uint32_t first_common_pattern = 0; - uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS2; - - if (estimate_partition) - { - const uint32_t weights[4] = { 1, 1, 1, 1 }; - first_common_pattern = estimate_partition2(8, 3, g_bc7_weights3, block, weights); - last_common_pattern = first_common_pattern + 1; - } - - for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) - { - const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; - - color_rgba part_pixels[2][16]; - uint32_t part_pixel_index[4][4]; - uint32_t num_part_pixels[2] = { 0, 0 }; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; - part_pixel_index[y][x] = num_part_pixels[part]; - part_pixels[part][num_part_pixels[part]++] = block[y][x]; - } - } - - color_cell_compressor_params ccell_params[2]; - color_cell_compressor_results ccell_results[2]; - uint8_t ccell_result_selectors[2][16]; - uint8_t ccell_result_selectors_temp[2][16]; - - uint64_t total_part_err = 0; - for (uint32_t part = 0; part < 2; part++) - { - memset(&ccell_params[part], 0, sizeof(ccell_params[part])); - - ccell_params[part].m_num_pixels = num_part_pixels[part]; - ccell_params[part].m_pPixels = (color_quad_u8*)&part_pixels[part][0]; - ccell_params[part].m_num_selector_weights = 8; - ccell_params[part].m_pSelector_weights = g_bc7_weights3; - ccell_params[part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights3x; - ccell_params[part].m_astc_endpoint_range = 8; - ccell_params[part].m_weights[0] = 1; - ccell_params[part].m_weights[1] = 1; - ccell_params[part].m_weights[2] = 1; - ccell_params[part].m_weights[3] = 1; - - memset(&ccell_results[part], 0, sizeof(ccell_results[part])); - ccell_results[part].m_pSelectors = &ccell_result_selectors[part][0]; - ccell_results[part].m_pSelectors_temp = &ccell_result_selectors_temp[part][0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params[part], &ccell_results[part], &comp_params); - total_part_err += part_err; - } // part - - { - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = 5; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 2; - astc_results.m_partition_seed = g_astc_bc7_common_partitions2[common_pattern].m_astc; - astc_results.m_cem = 8; - - uint32_t p0 = 0; - uint32_t p1 = 1; - if (g_astc_bc7_common_partitions2[common_pattern].m_invert) - std::swap(p0, p1); - - astc_results.m_endpoints[0] = ccell_results[p0].m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results[p0].m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results[p0].m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results[p0].m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results[p0].m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results[p0].m_astc_high_endpoint.m_c[2]; - - const uint32_t range = 8; - - bool invert[2] = { false, false }; - - int s0 = g_astc_unquant[range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - invert[0] = true; - } - - astc_results.m_endpoints[6] = ccell_results[p1].m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[7] = ccell_results[p1].m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[8] = ccell_results[p1].m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[9] = ccell_results[p1].m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[10] = ccell_results[p1].m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[11] = ccell_results[p1].m_astc_high_endpoint.m_c[2]; - - s0 = g_astc_unquant[range][astc_results.m_endpoints[0 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[2 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[4 + 6]].m_unquant; - s1 = g_astc_unquant[range][astc_results.m_endpoints[1 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[3 + 6]].m_unquant + g_astc_unquant[range][astc_results.m_endpoints[5 + 6]].m_unquant; - - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0 + 6], astc_results.m_endpoints[1 + 6]); - std::swap(astc_results.m_endpoints[2 + 6], astc_results.m_endpoints[3 + 6]); - std::swap(astc_results.m_endpoints[4 + 6], astc_results.m_endpoints[5 + 6]); - invert[1] = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t bc7_part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; - - astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; - - uint32_t astc_part = bc7_part; - if (g_astc_bc7_common_partitions2[common_pattern].m_invert) - astc_part = 1 - astc_part; - - if (invert[astc_part]) - astc_results.m_weights[x + y * 4] = 7 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 2; - pResults[total_results].m_common_pattern = common_pattern; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = total_part_err; - total_results++; - } - } - - } // common_pattern - } - - // MODE 3 - // 3-subsets, 2-bit indices, [0,11] endpoints, BC7 mode 2 - // DualPlane: 0, WeightRange: 2 (4), Subsets: 3, CEM: 8 (RGB Direct ), EndpointRange: 7 (12) MODE2 - static void astc_mode3(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) - { - uint32_t first_common_pattern = 0; - uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS3; - - if (estimate_partition) - { - uint64_t best_err = UINT64_MAX; - uint32_t best_common_pattern = 0; - const uint32_t weights[4] = { 1, 1, 1, 1 }; - - for (uint32_t common_pattern = 0; common_pattern < TOTAL_ASTC_BC7_COMMON_PARTITIONS3; common_pattern++) - { - const uint32_t bc7_pattern = g_astc_bc7_common_partitions3[common_pattern].m_bc7; - - const uint8_t* pPartition = &g_bc7_partition3[bc7_pattern * 16]; - - color_quad_u8 subset_colors[3][16]; - uint32_t subset_total_colors[3] = { 0, 0 }; - for (uint32_t index = 0; index < 16; index++) - subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; - - uint64_t total_subset_err = 0; - for (uint32_t subset = 0; (subset < 3) && (total_subset_err < best_err); subset++) - total_subset_err += color_cell_compression_est_astc(4, 3, g_bc7_weights2, subset_total_colors[subset], &subset_colors[subset][0], best_err, weights); - - if (total_subset_err < best_err) - { - best_err = total_subset_err; - best_common_pattern = common_pattern; - } - } - - first_common_pattern = best_common_pattern; - last_common_pattern = best_common_pattern + 1; - } - - for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) - { - const uint32_t endpoint_range = 7; - - const uint32_t bc7_pattern = g_astc_bc7_common_partitions3[common_pattern].m_bc7; - - color_rgba part_pixels[3][16]; - uint32_t part_pixel_index[4][4]; - uint32_t num_part_pixels[3] = { 0, 0, 0 }; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t bc7_part = g_bc7_partition3[16 * bc7_pattern + x + y * 4]; - part_pixel_index[y][x] = num_part_pixels[bc7_part]; - part_pixels[bc7_part][num_part_pixels[bc7_part]++] = block[y][x]; - } - } - - color_cell_compressor_params ccell_params[3]; - color_cell_compressor_results ccell_results[3]; - uint8_t ccell_result_selectors[3][16]; - uint8_t ccell_result_selectors_temp[3][16]; - - uint64_t total_part_err = 0; - for (uint32_t bc7_part = 0; bc7_part < 3; bc7_part++) - { - memset(&ccell_params[bc7_part], 0, sizeof(ccell_params[bc7_part])); - - ccell_params[bc7_part].m_num_pixels = num_part_pixels[bc7_part]; - ccell_params[bc7_part].m_pPixels = (color_quad_u8*)&part_pixels[bc7_part][0]; - ccell_params[bc7_part].m_num_selector_weights = 4; - ccell_params[bc7_part].m_pSelector_weights = g_bc7_weights2; - ccell_params[bc7_part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params[bc7_part].m_astc_endpoint_range = endpoint_range; - ccell_params[bc7_part].m_weights[0] = 1; - ccell_params[bc7_part].m_weights[1] = 1; - ccell_params[bc7_part].m_weights[2] = 1; - ccell_params[bc7_part].m_weights[3] = 1; - - memset(&ccell_results[bc7_part], 0, sizeof(ccell_results[bc7_part])); - ccell_results[bc7_part].m_pSelectors = &ccell_result_selectors[bc7_part][0]; - ccell_results[bc7_part].m_pSelectors_temp = &ccell_result_selectors_temp[bc7_part][0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params[bc7_part], &ccell_results[bc7_part], &comp_params); - total_part_err += part_err; - } // part - - { - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = 2; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 3; - astc_results.m_partition_seed = g_astc_bc7_common_partitions3[common_pattern].m_astc; - astc_results.m_cem = 8; - - uint32_t astc_to_bc7_part[3]; // converts ASTC to BC7 partition index - const uint32_t perm = g_astc_bc7_common_partitions3[common_pattern].m_astc_to_bc7_perm; - astc_to_bc7_part[0] = g_astc_to_bc7_partition_index_perm_tables[perm][0]; - astc_to_bc7_part[1] = g_astc_to_bc7_partition_index_perm_tables[perm][1]; - astc_to_bc7_part[2] = g_astc_to_bc7_partition_index_perm_tables[perm][2]; - - bool invert_astc_part[3] = { false, false, false }; - - for (uint32_t astc_part = 0; astc_part < 3; astc_part++) - { - uint8_t* pEndpoints = &astc_results.m_endpoints[6 * astc_part]; - - pEndpoints[0] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_low_endpoint.m_c[0]; - pEndpoints[1] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_high_endpoint.m_c[0]; - pEndpoints[2] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_low_endpoint.m_c[1]; - pEndpoints[3] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_high_endpoint.m_c[1]; - pEndpoints[4] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_low_endpoint.m_c[2]; - pEndpoints[5] = ccell_results[astc_to_bc7_part[astc_part]].m_astc_high_endpoint.m_c[2]; - - int s0 = g_astc_unquant[endpoint_range][pEndpoints[0]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[2]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][pEndpoints[1]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[3]].m_unquant + g_astc_unquant[endpoint_range][pEndpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(pEndpoints[0], pEndpoints[1]); - std::swap(pEndpoints[2], pEndpoints[3]); - std::swap(pEndpoints[4], pEndpoints[5]); - invert_astc_part[astc_part] = true; - } - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t bc7_part = g_bc7_partition3[16 * bc7_pattern + x + y * 4]; - - astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; - - uint32_t astc_part = 0; - for (uint32_t i = 0; i < 3; i++) - { - if (astc_to_bc7_part[i] == bc7_part) - { - astc_part = i; - break; - } - } - - if (invert_astc_part[astc_part]) - astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 3; - pResults[total_results].m_common_pattern = common_pattern; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = total_part_err; - total_results++; - } - - } - - } // common_pattern - } - - // MODE 4 - // DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 8 (RGB Direct ), EndpointRange: 12 (40) MODE3 - static void astc_mode4(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) - { - //const uint32_t weight_range = 2; - const uint32_t endpoint_range = 12; - - uint32_t first_common_pattern = 0; - uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS2; - - if (estimate_partition) - { - const uint32_t weights[4] = { 1, 1, 1, 1 }; - first_common_pattern = estimate_partition2(4, 3, g_bc7_weights2, block, weights); - last_common_pattern = first_common_pattern + 1; - } - - for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) - { - const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; - - color_rgba part_pixels[2][16]; - uint32_t part_pixel_index[4][4]; - uint32_t num_part_pixels[2] = { 0, 0 }; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; - part_pixel_index[y][x] = num_part_pixels[part]; - part_pixels[part][num_part_pixels[part]++] = block[y][x]; - } - } - - color_cell_compressor_params ccell_params[2]; - color_cell_compressor_results ccell_results[2]; - uint8_t ccell_result_selectors[2][16]; - uint8_t ccell_result_selectors_temp[2][16]; - - uint64_t total_part_err = 0; - for (uint32_t part = 0; part < 2; part++) - { - memset(&ccell_params[part], 0, sizeof(ccell_params[part])); - - ccell_params[part].m_num_pixels = num_part_pixels[part]; - ccell_params[part].m_pPixels = (color_quad_u8*)&part_pixels[part][0]; - ccell_params[part].m_num_selector_weights = 4; - ccell_params[part].m_pSelector_weights = g_bc7_weights2; - ccell_params[part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params[part].m_astc_endpoint_range = endpoint_range; - ccell_params[part].m_weights[0] = 1; - ccell_params[part].m_weights[1] = 1; - ccell_params[part].m_weights[2] = 1; - ccell_params[part].m_weights[3] = 1; - - memset(&ccell_results[part], 0, sizeof(ccell_results[part])); - ccell_results[part].m_pSelectors = &ccell_result_selectors[part][0]; - ccell_results[part].m_pSelectors_temp = &ccell_result_selectors_temp[part][0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params[part], &ccell_results[part], &comp_params); - total_part_err += part_err; - } // part - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = 2; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 2; - astc_results.m_partition_seed = g_astc_bc7_common_partitions2[common_pattern].m_astc; - astc_results.m_cem = 8; - - uint32_t p0 = 0; - uint32_t p1 = 1; - if (g_astc_bc7_common_partitions2[common_pattern].m_invert) - std::swap(p0, p1); - - astc_results.m_endpoints[0] = ccell_results[p0].m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results[p0].m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results[p0].m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results[p0].m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results[p0].m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results[p0].m_astc_high_endpoint.m_c[2]; - - bool invert[2] = { false, false }; - - int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - invert[0] = true; - } - - astc_results.m_endpoints[6] = ccell_results[p1].m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[7] = ccell_results[p1].m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[8] = ccell_results[p1].m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[9] = ccell_results[p1].m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[10] = ccell_results[p1].m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[11] = ccell_results[p1].m_astc_high_endpoint.m_c[2]; - - s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4 + 6]].m_unquant; - s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3 + 6]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5 + 6]].m_unquant; - - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0 + 6], astc_results.m_endpoints[1 + 6]); - std::swap(astc_results.m_endpoints[2 + 6], astc_results.m_endpoints[3 + 6]); - std::swap(astc_results.m_endpoints[4 + 6], astc_results.m_endpoints[5 + 6]); - invert[1] = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t bc7_part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; - - astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; - - uint32_t astc_part = bc7_part; - if (g_astc_bc7_common_partitions2[common_pattern].m_invert) - astc_part = 1 - astc_part; - - if (invert[astc_part]) - astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 4; - pResults[total_results].m_common_pattern = common_pattern; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = total_part_err; - total_results++; - } - - } // common_pattern - } - - // MODE 5 - // DualPlane: 0, WeightRange: 5 (8), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 20 (256) BC7 MODE 6 (or MODE 1 1-subset) - static void astc_mode5(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - const uint32_t weight_range = 5; - const uint32_t endpoint_range = 20; - - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - ccell_params.m_num_pixels = 16; - ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_num_selector_weights = 8; - ccell_params.m_pSelector_weights = g_bc7_weights3; - ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights3x; - ccell_params.m_astc_endpoint_range = endpoint_range; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc blk; - memset(&blk, 0, sizeof(blk)); - - blk.m_dual_plane = false; - blk.m_weight_range = weight_range; - - blk.m_ccs = 0; - blk.m_subsets = 1; - blk.m_partition_seed = 0; - blk.m_cem = 8; - - blk.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - blk.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; - blk.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; - blk.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; - blk.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; - - bool invert = false; - - int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - blk.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - if (invert) - blk.m_weights[x + y * 4] = 7 - blk.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 5; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = blk; - pResults[total_results].m_astc_err = part_err; - total_results++; - } - } - - // MODE 6 - // DualPlane: 1, WeightRange: 2 (4), Subsets: 1, CEM: 8 (RGB Direct ), EndpointRange: 18 (160) BC7 MODE5 - static void astc_mode6(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - for (uint32_t rot_comp = 0; rot_comp < 3; rot_comp++) - { - const uint32_t weight_range = 2; - const uint32_t endpoint_range = 18; - - color_quad_u8 block_rgb[16]; - color_quad_u8 block_a[16]; - for (uint32_t i = 0; i < 16; i++) - { - block_rgb[i] = ((color_quad_u8*)&block[0][0])[i]; - block_a[i] = block_rgb[i]; - - uint8_t c = block_a[i].m_c[rot_comp]; - block_a[i].m_c[0] = c; - block_a[i].m_c[1] = c; - block_a[i].m_c[2] = c; - block_a[i].m_c[3] = 255; - - block_rgb[i].m_c[rot_comp] = 255; - } - - uint8_t ccell_result_selectors_temp[16]; - - color_cell_compressor_params ccell_params_rgb; - memset(&ccell_params_rgb, 0, sizeof(ccell_params_rgb)); - - ccell_params_rgb.m_num_pixels = 16; - ccell_params_rgb.m_pPixels = block_rgb; - ccell_params_rgb.m_num_selector_weights = 4; - ccell_params_rgb.m_pSelector_weights = g_bc7_weights2; - ccell_params_rgb.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params_rgb.m_astc_endpoint_range = endpoint_range; - ccell_params_rgb.m_weights[0] = 1; - ccell_params_rgb.m_weights[1] = 1; - ccell_params_rgb.m_weights[2] = 1; - ccell_params_rgb.m_weights[3] = 1; - - color_cell_compressor_results ccell_results_rgb; - uint8_t ccell_result_selectors_rgb[16]; - memset(&ccell_results_rgb, 0, sizeof(ccell_results_rgb)); - ccell_results_rgb.m_pSelectors = &ccell_result_selectors_rgb[0]; - ccell_results_rgb.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err_rgb = color_cell_compression(255, &ccell_params_rgb, &ccell_results_rgb, &comp_params); - - color_cell_compressor_params ccell_params_a; - memset(&ccell_params_a, 0, sizeof(ccell_params_a)); - - ccell_params_a.m_num_pixels = 16; - ccell_params_a.m_pPixels = block_a; - ccell_params_a.m_num_selector_weights = 4; - ccell_params_a.m_pSelector_weights = g_bc7_weights2; - ccell_params_a.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params_a.m_astc_endpoint_range = endpoint_range; - ccell_params_a.m_weights[0] = 1; - ccell_params_a.m_weights[1] = 1; - ccell_params_a.m_weights[2] = 1; - ccell_params_a.m_weights[3] = 1; - - color_cell_compressor_results ccell_results_a; - uint8_t ccell_result_selectors_a[16]; - memset(&ccell_results_a, 0, sizeof(ccell_results_a)); - ccell_results_a.m_pSelectors = &ccell_result_selectors_a[0]; - ccell_results_a.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err_a = color_cell_compression(255, &ccell_params_a, &ccell_results_a, &comp_params) / 3; - - uint64_t total_err = part_err_rgb + part_err_a; - - // ASTC - astc_block_desc blk; - memset(&blk, 0, sizeof(blk)); - - blk.m_dual_plane = true; - blk.m_weight_range = weight_range; - - blk.m_ccs = rot_comp; - blk.m_subsets = 1; - blk.m_partition_seed = 0; - blk.m_cem = 8; - - blk.m_endpoints[0] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[1] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[0]; - blk.m_endpoints[2] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[1]; - blk.m_endpoints[3] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[1]; - blk.m_endpoints[4] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[2]; - blk.m_endpoints[5] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[2]; - - bool invert = false; - - int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t rgb_index = ccell_result_selectors_rgb[x + y * 4]; - uint32_t a_index = ccell_result_selectors_a[x + y * 4]; - - if (invert) - { - rgb_index = 3 - rgb_index; - a_index = 3 - a_index; - } - - blk.m_weights[(x + y * 4) * 2 + 0] = (uint8_t)rgb_index; - blk.m_weights[(x + y * 4) * 2 + 1] = (uint8_t)a_index; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 6; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = blk; - pResults[total_results].m_astc_err = total_err; - total_results++; - } - } // rot_comp - } - - // MODE 7 - 2 subset ASTC, 3 subset BC7 - // DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 8 (RGB Direct ), EndpointRange: 12 (40) MODE2 - static void astc_mode7(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, bool estimate_partition) - { - uint32_t first_common_pattern = 0; - uint32_t last_common_pattern = TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS; - - if (estimate_partition) - { - uint64_t best_err = UINT64_MAX; - uint32_t best_common_pattern = 0; - const uint32_t weights[4] = { 1, 1, 1, 1 }; - - for (uint32_t common_pattern = 0; common_pattern < TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS; common_pattern++) - { - const uint8_t* pPartition = &g_bc7_3_astc2_patterns2[common_pattern][0]; - -#ifdef _DEBUG - const uint32_t astc_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_astc2; - const uint32_t bc7_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_bc73; - const uint32_t common_pattern_k = g_bc7_3_astc2_common_partitions[common_pattern].k; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t astc_part = bc7_convert_partition_index_3_to_2(g_bc7_partition3[16 * bc7_pattern + x + y * 4], common_pattern_k); - assert((int)astc_part == astc_compute_texel_partition(astc_pattern, x, y, 0, 2, true)); - assert(astc_part == pPartition[x + y * 4]); - } - } -#endif - - color_quad_u8 subset_colors[2][16]; - uint32_t subset_total_colors[2] = { 0, 0 }; - for (uint32_t index = 0; index < 16; index++) - subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; - - uint64_t total_subset_err = 0; - for (uint32_t subset = 0; (subset < 2) && (total_subset_err < best_err); subset++) - total_subset_err += color_cell_compression_est_astc(4, 3, g_bc7_weights2, subset_total_colors[subset], &subset_colors[subset][0], best_err, weights); - - if (total_subset_err < best_err) - { - best_err = total_subset_err; - best_common_pattern = common_pattern; - } - } - - first_common_pattern = best_common_pattern; - last_common_pattern = best_common_pattern + 1; - } - - //const uint32_t weight_range = 2; - const uint32_t endpoint_range = 12; - - for (uint32_t common_pattern = first_common_pattern; common_pattern < last_common_pattern; common_pattern++) - { - const uint32_t astc_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_astc2; - const uint32_t bc7_pattern = g_bc7_3_astc2_common_partitions[common_pattern].m_bc73; - const uint32_t common_pattern_k = g_bc7_3_astc2_common_partitions[common_pattern].k; - - color_rgba part_pixels[2][16]; - uint32_t part_pixel_index[4][4]; - uint32_t num_part_pixels[2] = { 0, 0 }; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t astc_part = bc7_convert_partition_index_3_to_2(g_bc7_partition3[16 * bc7_pattern + x + y * 4], common_pattern_k); -#ifdef _DEBUG - assert((int)astc_part == astc_compute_texel_partition(astc_pattern, x, y, 0, 2, true)); -#endif - - part_pixel_index[y][x] = num_part_pixels[astc_part]; - part_pixels[astc_part][num_part_pixels[astc_part]++] = block[y][x]; - } - } - - color_cell_compressor_params ccell_params[2]; - color_cell_compressor_results ccell_results[2]; - uint8_t ccell_result_selectors[2][16]; - uint8_t ccell_result_selectors_temp[2][16]; - - uint64_t total_part_err = 0; - for (uint32_t part = 0; part < 2; part++) - { - memset(&ccell_params[part], 0, sizeof(ccell_params[part])); - - ccell_params[part].m_num_pixels = num_part_pixels[part]; - ccell_params[part].m_pPixels = (color_quad_u8*)&part_pixels[part][0]; - ccell_params[part].m_num_selector_weights = 4; - ccell_params[part].m_pSelector_weights = g_bc7_weights2; - ccell_params[part].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params[part].m_astc_endpoint_range = endpoint_range; - ccell_params[part].m_weights[0] = 1; - ccell_params[part].m_weights[1] = 1; - ccell_params[part].m_weights[2] = 1; - ccell_params[part].m_weights[3] = 1; - - memset(&ccell_results[part], 0, sizeof(ccell_results[part])); - ccell_results[part].m_pSelectors = &ccell_result_selectors[part][0]; - ccell_results[part].m_pSelectors_temp = &ccell_result_selectors_temp[part][0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params[part], &ccell_results[part], &comp_params); - total_part_err += part_err; - } // part - - // ASTC - astc_block_desc blk; - memset(&blk, 0, sizeof(blk)); - - blk.m_dual_plane = false; - blk.m_weight_range = 2; - - blk.m_ccs = 0; - blk.m_subsets = 2; - blk.m_partition_seed = astc_pattern; - blk.m_cem = 8; - - const uint32_t p0 = 0; - const uint32_t p1 = 1; - - blk.m_endpoints[0] = ccell_results[p0].m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[1] = ccell_results[p0].m_astc_high_endpoint.m_c[0]; - blk.m_endpoints[2] = ccell_results[p0].m_astc_low_endpoint.m_c[1]; - blk.m_endpoints[3] = ccell_results[p0].m_astc_high_endpoint.m_c[1]; - blk.m_endpoints[4] = ccell_results[p0].m_astc_low_endpoint.m_c[2]; - blk.m_endpoints[5] = ccell_results[p0].m_astc_high_endpoint.m_c[2]; - - bool invert[2] = { false, false }; - - int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert[0] = true; - } - - blk.m_endpoints[6] = ccell_results[p1].m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[7] = ccell_results[p1].m_astc_high_endpoint.m_c[0]; - blk.m_endpoints[8] = ccell_results[p1].m_astc_low_endpoint.m_c[1]; - blk.m_endpoints[9] = ccell_results[p1].m_astc_high_endpoint.m_c[1]; - blk.m_endpoints[10] = ccell_results[p1].m_astc_low_endpoint.m_c[2]; - blk.m_endpoints[11] = ccell_results[p1].m_astc_high_endpoint.m_c[2]; - - s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4 + 6]].m_unquant; - s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3 + 6]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5 + 6]].m_unquant; - - if (s1 < s0) - { - std::swap(blk.m_endpoints[0 + 6], blk.m_endpoints[1 + 6]); - std::swap(blk.m_endpoints[2 + 6], blk.m_endpoints[3 + 6]); - std::swap(blk.m_endpoints[4 + 6], blk.m_endpoints[5 + 6]); - invert[1] = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t astc_part = bc7_convert_partition_index_3_to_2(g_bc7_partition3[16 * bc7_pattern + x + y * 4], common_pattern_k); - - blk.m_weights[x + y * 4] = ccell_result_selectors[astc_part][part_pixel_index[y][x]]; - - if (invert[astc_part]) - blk.m_weights[x + y * 4] = 3 - blk.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 7; - pResults[total_results].m_common_pattern = common_pattern; - pResults[total_results].m_astc = blk; - pResults[total_results].m_astc_err = total_part_err; - total_results++; - } - - } // common_pattern - } - - static void estimate_partition2_list(uint32_t num_weights, uint32_t num_comps, const uint32_t* pWeights, const color_rgba block[4][4], uint32_t* pParts, uint32_t max_parts, const uint32_t weights[4]) - { - assert(pWeights[0] == 0 && pWeights[num_weights - 1] == 64); - - const uint32_t MAX_PARTS = 8; - assert(max_parts <= MAX_PARTS); - - uint64_t part_error[MAX_PARTS]; - memset(part_error, 0xFF, sizeof(part_error)); - memset(pParts, 0, sizeof(pParts[0]) * max_parts); - - for (uint32_t common_pattern = 0; common_pattern < TOTAL_ASTC_BC7_COMMON_PARTITIONS2; common_pattern++) - { - const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; - - const uint8_t* pPartition = &g_bc7_partition2[bc7_pattern * 16]; - - color_quad_u8 subset_colors[2][16]; - uint32_t subset_total_colors[2] = { 0, 0 }; - for (uint32_t index = 0; index < 16; index++) - subset_colors[pPartition[index]][subset_total_colors[pPartition[index]]++] = ((const color_quad_u8*)block)[index]; - - uint64_t total_subset_err = 0; - for (uint32_t subset = 0; subset < 2; subset++) - total_subset_err += color_cell_compression_est_astc(num_weights, num_comps, pWeights, subset_total_colors[subset], &subset_colors[subset][0], UINT64_MAX, weights); - - for (int i = 0; i < (int)max_parts; i++) - { - if (total_subset_err < part_error[i]) - { - for (int j = max_parts - 1; j > i; --j) - { - pParts[j] = pParts[j - 1]; - part_error[j] = part_error[j - 1]; - } - - pParts[i] = common_pattern; - part_error[i] = total_subset_err; - - break; - } - } - } - -#ifdef _DEBUG - for (uint32_t i = 0; i < max_parts - 1; i++) - { - assert(part_error[i] <= part_error[i + 1]); - } -#endif - } - - // 9. DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 12 (RGBA Direct), EndpointRange: 8 (16) - BC7 MODE 7 - // 16. DualPlane: 0, WeightRange : 2 (4), Subsets : 2, CEM: 4 (LA Direct), EndpointRange : 20 (256) - BC7 MODE 7 - static void astc_mode9_or_16(uint32_t mode, const color_rgba source_block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params, uint32_t estimate_partition_list_size) - { - assert(mode == 9 || mode == 16); - - const color_rgba* pBlock = &source_block[0][0]; - - color_rgba temp_block[16]; - if (mode == 16) - { - for (uint32_t i = 0; i < 16; i++) - { - if (mode == 16) - { - assert(pBlock[i].r == pBlock[i].g); - assert(pBlock[i].r == pBlock[i].b); - } - - const uint32_t l = pBlock[i].r; - const uint32_t a = pBlock[i].a; - - // Use (l,0,0,a) not (l,l,l,a) so both components are treated equally. - temp_block[i].set_noclamp_rgba(l, 0, 0, a); - } - - pBlock = temp_block; - } - - const uint32_t weights[4] = { 1, 1, 1, 1 }; - - //const uint32_t weight_range = 2; - const uint32_t endpoint_range = (mode == 16) ? 20 : 8; - - uint32_t first_common_pattern = 0; - uint32_t last_common_pattern = TOTAL_ASTC_BC7_COMMON_PARTITIONS2; - bool use_part_list = false; - - const uint32_t MAX_PARTS = 8; - uint32_t parts[MAX_PARTS]; - - if (estimate_partition_list_size == 1) - { - first_common_pattern = estimate_partition2(4, 4, g_bc7_weights2, (const color_rgba(*)[4])pBlock, weights); - last_common_pattern = first_common_pattern + 1; - } - else if (estimate_partition_list_size > 0) - { - assert(estimate_partition_list_size <= MAX_PARTS); - estimate_partition_list_size = basisu::minimum(estimate_partition_list_size, MAX_PARTS); - - estimate_partition2_list(4, 4, g_bc7_weights2, (const color_rgba(*)[4])pBlock, parts, estimate_partition_list_size, weights); - - first_common_pattern = 0; - last_common_pattern = estimate_partition_list_size; - use_part_list = true; - -#ifdef _DEBUG - assert(parts[0] == estimate_partition2(4, 4, g_bc7_weights2, (const color_rgba(*)[4])pBlock, weights)); -#endif - } - - for (uint32_t common_pattern_iter = first_common_pattern; common_pattern_iter < last_common_pattern; common_pattern_iter++) - { - const uint32_t common_pattern = use_part_list ? parts[common_pattern_iter] : common_pattern_iter; - - const uint32_t bc7_pattern = g_astc_bc7_common_partitions2[common_pattern].m_bc7; - - color_rgba part_pixels[2][16]; - uint32_t part_pixel_index[4][4]; - uint32_t num_part_pixels[2] = { 0, 0 }; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; - part_pixel_index[y][x] = num_part_pixels[part]; - part_pixels[part][num_part_pixels[part]++] = pBlock[y * 4 + x]; - } - } - - color_cell_compressor_params ccell_params[2]; - color_cell_compressor_results ccell_results[2]; - uint8_t ccell_result_selectors[2][16]; - uint8_t ccell_result_selectors_temp[2][16]; - - uint64_t total_err = 0; - for (uint32_t subset = 0; subset < 2; subset++) - { - memset(&ccell_params[subset], 0, sizeof(ccell_params[subset])); - - ccell_params[subset].m_num_pixels = num_part_pixels[subset]; - ccell_params[subset].m_pPixels = (color_quad_u8*)&part_pixels[subset][0]; - ccell_params[subset].m_num_selector_weights = 4; - ccell_params[subset].m_pSelector_weights = g_bc7_weights2; - ccell_params[subset].m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params[subset].m_astc_endpoint_range = endpoint_range; - ccell_params[subset].m_weights[0] = weights[0]; - ccell_params[subset].m_weights[1] = weights[1]; - ccell_params[subset].m_weights[2] = weights[2]; - ccell_params[subset].m_weights[3] = weights[3]; - ccell_params[subset].m_has_alpha = true; - - memset(&ccell_results[subset], 0, sizeof(ccell_results[subset])); - ccell_results[subset].m_pSelectors = &ccell_result_selectors[subset][0]; - ccell_results[subset].m_pSelectors_temp = &ccell_result_selectors_temp[subset][0]; - - uint64_t subset_err = color_cell_compression(255, &ccell_params[subset], &ccell_results[subset], &comp_params); - - if (mode == 16) - { - color_rgba colors[4]; - for (uint32_t c = 0; c < 4; c++) - { - colors[0].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results[subset].m_astc_low_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; - colors[3].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results[subset].m_astc_high_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; - } - - for (uint32_t i = 1; i < 4 - 1; i++) - for (uint32_t c = 0; c < 4; c++) - colors[i].m_comps[c] = (uint8_t)astc_interpolate(colors[0].m_comps[c], colors[3].m_comps[c], g_bc7_weights2[i], false); - - for (uint32_t p = 0; p < ccell_params[subset].m_num_pixels; p++) - { - color_rgba orig_pix(part_pixels[subset][p]); - orig_pix.g = orig_pix.r; - orig_pix.b = orig_pix.r; - total_err += color_distance_la(orig_pix, colors[ccell_result_selectors[subset][p]]); - } - } - else - { - total_err += subset_err; - } - } // subset - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = 2; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 2; - astc_results.m_partition_seed = g_astc_bc7_common_partitions2[common_pattern].m_astc; - astc_results.m_cem = (mode == 16) ? 4 : 12; - - uint32_t part[2] = { 0, 1 }; - if (g_astc_bc7_common_partitions2[common_pattern].m_invert) - std::swap(part[0], part[1]); - - bool invert[2] = { false, false }; - - for (uint32_t p = 0; p < 2; p++) - { - if (mode == 16) - { - astc_results.m_endpoints[p * 4 + 0] = ccell_results[part[p]].m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[p * 4 + 1] = ccell_results[part[p]].m_astc_high_endpoint.m_c[0]; - - astc_results.m_endpoints[p * 4 + 2] = ccell_results[part[p]].m_astc_low_endpoint.m_c[3]; - astc_results.m_endpoints[p * 4 + 3] = ccell_results[part[p]].m_astc_high_endpoint.m_c[3]; - } - else - { - for (uint32_t c = 0; c < 4; c++) - { - astc_results.m_endpoints[p * 8 + c * 2] = ccell_results[part[p]].m_astc_low_endpoint.m_c[c]; - astc_results.m_endpoints[p * 8 + c * 2 + 1] = ccell_results[part[p]].m_astc_high_endpoint.m_c[c]; - } - - int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 0]].m_unquant + - g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 2]].m_unquant + - g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 4]].m_unquant; - - int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 1]].m_unquant + - g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 3]].m_unquant + - g_astc_unquant[endpoint_range][astc_results.m_endpoints[p * 8 + 5]].m_unquant; - - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[p * 8 + 0], astc_results.m_endpoints[p * 8 + 1]); - std::swap(astc_results.m_endpoints[p * 8 + 2], astc_results.m_endpoints[p * 8 + 3]); - std::swap(astc_results.m_endpoints[p * 8 + 4], astc_results.m_endpoints[p * 8 + 5]); - std::swap(astc_results.m_endpoints[p * 8 + 6], astc_results.m_endpoints[p * 8 + 7]); - invert[p] = true; - } - } - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t bc7_part = g_bc7_partition2[16 * bc7_pattern + x + y * 4]; - - astc_results.m_weights[x + y * 4] = ccell_result_selectors[bc7_part][part_pixel_index[y][x]]; - - uint32_t astc_part = bc7_part; - if (g_astc_bc7_common_partitions2[common_pattern].m_invert) - astc_part = 1 - astc_part; - - if (invert[astc_part]) - astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = mode; - pResults[total_results].m_common_pattern = common_pattern; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = total_err; - total_results++; - } - - } // common_pattern - } - - // MODE 10 - // DualPlane: 0, WeightRange: 8 (16), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 13 (48) MODE6 - static void astc_mode10(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - const uint32_t weight_range = 8; - const uint32_t endpoint_range = 13; - - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - ccell_params.m_num_pixels = 16; - ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_num_selector_weights = 16; - ccell_params.m_pSelector_weights = g_astc_weights4; - ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_astc_weights4x; - ccell_params.m_astc_endpoint_range = endpoint_range; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - ccell_params.m_has_alpha = true; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = weight_range; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 1; - astc_results.m_partition_seed = 0; - astc_results.m_cem = 12; - - astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; - astc_results.m_endpoints[6] = ccell_results.m_astc_low_endpoint.m_c[3]; - astc_results.m_endpoints[7] = ccell_results.m_astc_high_endpoint.m_c[3]; - - bool invert = false; - - int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - std::swap(astc_results.m_endpoints[6], astc_results.m_endpoints[7]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - if (invert) - astc_results.m_weights[x + y * 4] = 15 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 10; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = part_err; - total_results++; - } - } - - // 11. DualPlane: 1, WeightRange: 2 (4), Subsets: 1, CEM: 12 (RGBA Direct), EndpointRange: 13 (48) MODE5 - // 17. DualPlane: 1, WeightRange : 2 (4), Subsets : 1, CEM : 4 (LA Direct), EndpointRange : 20 (256) BC7 MODE5 - static void astc_mode11_or_17(uint32_t mode, const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - assert((mode == 11) || (mode == 17)); - - const uint32_t weight_range = 2; - const uint32_t endpoint_range = (mode == 17) ? 20 : 13; - - bc7enc_compress_block_params local_comp_params(comp_params); - local_comp_params.m_perceptual = false; - local_comp_params.m_weights[0] = 1; - local_comp_params.m_weights[1] = 1; - local_comp_params.m_weights[2] = 1; - local_comp_params.m_weights[3] = 1; - - const uint32_t last_rot_comp = (mode == 17) ? 1 : 4; - - for (uint32_t rot_comp = 0; rot_comp < last_rot_comp; rot_comp++) - { - color_quad_u8 block_rgb[16]; - color_quad_u8 block_a[16]; - for (uint32_t i = 0; i < 16; i++) - { - block_rgb[i] = ((color_quad_u8*)&block[0][0])[i]; - block_a[i] = block_rgb[i]; - - if (mode == 17) - { - assert(block_rgb[i].m_c[0] == block_rgb[i].m_c[1]); - assert(block_rgb[i].m_c[0] == block_rgb[i].m_c[2]); - - block_a[i].m_c[0] = block_rgb[i].m_c[3]; - block_a[i].m_c[1] = block_rgb[i].m_c[3]; - block_a[i].m_c[2] = block_rgb[i].m_c[3]; - block_a[i].m_c[3] = 255; - - block_rgb[i].m_c[1] = block_rgb[i].m_c[0]; - block_rgb[i].m_c[2] = block_rgb[i].m_c[0]; - block_rgb[i].m_c[3] = 255; - } - else - { - uint8_t c = block_a[i].m_c[rot_comp]; - block_a[i].m_c[0] = c; - block_a[i].m_c[1] = c; - block_a[i].m_c[2] = c; - block_a[i].m_c[3] = 255; - - block_rgb[i].m_c[rot_comp] = block_rgb[i].m_c[3]; - block_rgb[i].m_c[3] = 255; - } - } - - uint8_t ccell_result_selectors_temp[16]; - - color_cell_compressor_params ccell_params_rgb; - memset(&ccell_params_rgb, 0, sizeof(ccell_params_rgb)); - - ccell_params_rgb.m_num_pixels = 16; - ccell_params_rgb.m_pPixels = block_rgb; - ccell_params_rgb.m_num_selector_weights = 4; - ccell_params_rgb.m_pSelector_weights = g_bc7_weights2; - ccell_params_rgb.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params_rgb.m_astc_endpoint_range = endpoint_range; - ccell_params_rgb.m_weights[0] = 1; - ccell_params_rgb.m_weights[1] = 1; - ccell_params_rgb.m_weights[2] = 1; - ccell_params_rgb.m_weights[3] = 1; - - color_cell_compressor_results ccell_results_rgb; - uint8_t ccell_result_selectors_rgb[16]; - memset(&ccell_results_rgb, 0, sizeof(ccell_results_rgb)); - ccell_results_rgb.m_pSelectors = &ccell_result_selectors_rgb[0]; - ccell_results_rgb.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err_rgb = color_cell_compression(255, &ccell_params_rgb, &ccell_results_rgb, &local_comp_params); - - color_cell_compressor_params ccell_params_a; - memset(&ccell_params_a, 0, sizeof(ccell_params_a)); - - ccell_params_a.m_num_pixels = 16; - ccell_params_a.m_pPixels = block_a; - ccell_params_a.m_num_selector_weights = 4; - ccell_params_a.m_pSelector_weights = g_bc7_weights2; - ccell_params_a.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params_a.m_astc_endpoint_range = endpoint_range; - ccell_params_a.m_weights[0] = 1; - ccell_params_a.m_weights[1] = 1; - ccell_params_a.m_weights[2] = 1; - ccell_params_a.m_weights[3] = 1; - - color_cell_compressor_results ccell_results_a; - uint8_t ccell_result_selectors_a[16]; - memset(&ccell_results_a, 0, sizeof(ccell_results_a)); - ccell_results_a.m_pSelectors = &ccell_result_selectors_a[0]; - ccell_results_a.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err_a = color_cell_compression(255, &ccell_params_a, &ccell_results_a, &local_comp_params) / 3; - - uint64_t total_err = (mode == 17) ? ((part_err_rgb / 3) + part_err_a) : (part_err_rgb + part_err_a); - - // ASTC - astc_block_desc blk; - memset(&blk, 0, sizeof(blk)); - - blk.m_dual_plane = true; - blk.m_weight_range = weight_range; - - blk.m_ccs = (mode == 17) ? 3 : rot_comp; - blk.m_subsets = 1; - blk.m_partition_seed = 0; - blk.m_cem = (mode == 17) ? 4 : 12; - - bool invert = false; - - if (mode == 17) - { - assert(ccell_results_rgb.m_astc_low_endpoint.m_c[0] == ccell_results_rgb.m_astc_low_endpoint.m_c[1]); - assert(ccell_results_rgb.m_astc_low_endpoint.m_c[0] == ccell_results_rgb.m_astc_low_endpoint.m_c[2]); - - assert(ccell_results_rgb.m_astc_high_endpoint.m_c[0] == ccell_results_rgb.m_astc_high_endpoint.m_c[1]); - assert(ccell_results_rgb.m_astc_high_endpoint.m_c[0] == ccell_results_rgb.m_astc_high_endpoint.m_c[2]); - - blk.m_endpoints[0] = ccell_results_rgb.m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[1] = ccell_results_rgb.m_astc_high_endpoint.m_c[0]; - - blk.m_endpoints[2] = ccell_results_a.m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[3] = ccell_results_a.m_astc_high_endpoint.m_c[0]; - } - else - { - blk.m_endpoints[0] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[1] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[0]; - blk.m_endpoints[2] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[1]; - blk.m_endpoints[3] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[1]; - blk.m_endpoints[4] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[2]; - blk.m_endpoints[5] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[2]; - if (rot_comp == 3) - { - blk.m_endpoints[6] = ccell_results_a.m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[7] = ccell_results_a.m_astc_high_endpoint.m_c[0]; - } - else - { - blk.m_endpoints[6] = ccell_results_rgb.m_astc_low_endpoint.m_c[rot_comp]; - blk.m_endpoints[7] = ccell_results_rgb.m_astc_high_endpoint.m_c[rot_comp]; - } - - int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - std::swap(blk.m_endpoints[6], blk.m_endpoints[7]); - invert = true; - } - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t rgb_index = ccell_result_selectors_rgb[x + y * 4]; - uint32_t a_index = ccell_result_selectors_a[x + y * 4]; - - if (invert) - { - rgb_index = 3 - rgb_index; - a_index = 3 - a_index; - } - - blk.m_weights[(x + y * 4) * 2 + 0] = (uint8_t)rgb_index; - blk.m_weights[(x + y * 4) * 2 + 1] = (uint8_t)a_index; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = mode; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = blk; - pResults[total_results].m_astc_err = total_err; - total_results++; - } - } // rot_comp - } - - // MODE 12 - // DualPlane: 0, WeightRange: 5 (8), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 19 (192) MODE6 - static void astc_mode12(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - const uint32_t weight_range = 5; - const uint32_t endpoint_range = 19; - - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - ccell_params.m_num_pixels = 16; - ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_num_selector_weights = 8; - ccell_params.m_pSelector_weights = g_bc7_weights3; - ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights3x; - ccell_params.m_astc_endpoint_range = endpoint_range; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - ccell_params.m_has_alpha = true; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = weight_range; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 1; - astc_results.m_partition_seed = 0; - astc_results.m_cem = 12; - - astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; - astc_results.m_endpoints[6] = ccell_results.m_astc_low_endpoint.m_c[3]; - astc_results.m_endpoints[7] = ccell_results.m_astc_high_endpoint.m_c[3]; - - bool invert = false; - - int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - std::swap(astc_results.m_endpoints[6], astc_results.m_endpoints[7]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - if (invert) - astc_results.m_weights[x + y * 4] = 7 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 12; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = part_err; - total_results++; - } - } - - // 13. DualPlane: 1, WeightRange: 0 (2), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 20 (256) MODE5 - static void astc_mode13(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - bc7enc_compress_block_params local_comp_params(comp_params); - local_comp_params.m_perceptual = false; - local_comp_params.m_weights[0] = 1; - local_comp_params.m_weights[1] = 1; - local_comp_params.m_weights[2] = 1; - local_comp_params.m_weights[3] = 1; - - for (uint32_t rot_comp = 0; rot_comp < 4; rot_comp++) - { - const uint32_t weight_range = 0; - const uint32_t endpoint_range = 20; - - color_quad_u8 block_rgb[16]; - color_quad_u8 block_a[16]; - for (uint32_t i = 0; i < 16; i++) - { - block_rgb[i] = ((color_quad_u8*)&block[0][0])[i]; - block_a[i] = block_rgb[i]; - - uint8_t c = block_a[i].m_c[rot_comp]; - block_a[i].m_c[0] = c; - block_a[i].m_c[1] = c; - block_a[i].m_c[2] = c; - block_a[i].m_c[3] = 255; - - block_rgb[i].m_c[rot_comp] = block_rgb[i].m_c[3]; - block_rgb[i].m_c[3] = 255; - } - - uint8_t ccell_result_selectors_temp[16]; - - color_cell_compressor_params ccell_params_rgb; - memset(&ccell_params_rgb, 0, sizeof(ccell_params_rgb)); - - ccell_params_rgb.m_num_pixels = 16; - ccell_params_rgb.m_pPixels = block_rgb; - ccell_params_rgb.m_num_selector_weights = 2; - ccell_params_rgb.m_pSelector_weights = g_bc7_weights1; - ccell_params_rgb.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights1x; - ccell_params_rgb.m_astc_endpoint_range = endpoint_range; - ccell_params_rgb.m_weights[0] = 1; - ccell_params_rgb.m_weights[1] = 1; - ccell_params_rgb.m_weights[2] = 1; - ccell_params_rgb.m_weights[3] = 1; - - color_cell_compressor_results ccell_results_rgb; - uint8_t ccell_result_selectors_rgb[16]; - memset(&ccell_results_rgb, 0, sizeof(ccell_results_rgb)); - ccell_results_rgb.m_pSelectors = &ccell_result_selectors_rgb[0]; - ccell_results_rgb.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err_rgb = color_cell_compression(255, &ccell_params_rgb, &ccell_results_rgb, &local_comp_params); - - color_cell_compressor_params ccell_params_a; - memset(&ccell_params_a, 0, sizeof(ccell_params_a)); - - ccell_params_a.m_num_pixels = 16; - ccell_params_a.m_pPixels = block_a; - ccell_params_a.m_num_selector_weights = 2; - ccell_params_a.m_pSelector_weights = g_bc7_weights1; - ccell_params_a.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights1x; - ccell_params_a.m_astc_endpoint_range = endpoint_range; - ccell_params_a.m_weights[0] = 1; - ccell_params_a.m_weights[1] = 1; - ccell_params_a.m_weights[2] = 1; - ccell_params_a.m_weights[3] = 1; - - color_cell_compressor_results ccell_results_a; - uint8_t ccell_result_selectors_a[16]; - memset(&ccell_results_a, 0, sizeof(ccell_results_a)); - ccell_results_a.m_pSelectors = &ccell_result_selectors_a[0]; - ccell_results_a.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err_a = color_cell_compression(255, &ccell_params_a, &ccell_results_a, &local_comp_params) / 3; - - uint64_t total_err = part_err_rgb + part_err_a; - - // ASTC - astc_block_desc blk; - memset(&blk, 0, sizeof(blk)); - - blk.m_dual_plane = true; - blk.m_weight_range = weight_range; - - blk.m_ccs = rot_comp; - blk.m_subsets = 1; - blk.m_partition_seed = 0; - blk.m_cem = 12; - - blk.m_endpoints[0] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[1] = (rot_comp == 0 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[0]; - blk.m_endpoints[2] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[1]; - blk.m_endpoints[3] = (rot_comp == 1 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[1]; - blk.m_endpoints[4] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_low_endpoint.m_c[2]; - blk.m_endpoints[5] = (rot_comp == 2 ? ccell_results_a : ccell_results_rgb).m_astc_high_endpoint.m_c[2]; - if (rot_comp == 3) - { - blk.m_endpoints[6] = ccell_results_a.m_astc_low_endpoint.m_c[0]; - blk.m_endpoints[7] = ccell_results_a.m_astc_high_endpoint.m_c[0]; - } - else - { - blk.m_endpoints[6] = ccell_results_rgb.m_astc_low_endpoint.m_c[rot_comp]; - blk.m_endpoints[7] = ccell_results_rgb.m_astc_high_endpoint.m_c[rot_comp]; - } - - bool invert = false; - - int s0 = g_astc_unquant[endpoint_range][blk.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][blk.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][blk.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - std::swap(blk.m_endpoints[6], blk.m_endpoints[7]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t rgb_index = ccell_result_selectors_rgb[x + y * 4]; - uint32_t a_index = ccell_result_selectors_a[x + y * 4]; - - if (invert) - { - rgb_index = 1 - rgb_index; - a_index = 1 - a_index; - } - - blk.m_weights[(x + y * 4) * 2 + 0] = (uint8_t)rgb_index; - blk.m_weights[(x + y * 4) * 2 + 1] = (uint8_t)a_index; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 13; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = blk; - pResults[total_results].m_astc_err = total_err; - total_results++; - } - } // rot_comp - } - - // MODE14 - // DualPlane: 0, WeightRange: 2 (4), Subsets: 1, CEM: 12 (RGBA Direct ), EndpointRange: 20 (256) MODE6 - static void astc_mode14(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - const uint32_t weight_range = 2; - const uint32_t endpoint_range = 20; - - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - ccell_params.m_num_pixels = 16; - ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_num_selector_weights = 4; - ccell_params.m_pSelector_weights = g_bc7_weights2; - ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_bc7_weights2x; - ccell_params.m_astc_endpoint_range = endpoint_range; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - ccell_params.m_has_alpha = true; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - uint64_t part_err = color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = weight_range; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 1; - astc_results.m_partition_seed = 0; - astc_results.m_cem = 12; - - astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[1]; - astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[1]; - astc_results.m_endpoints[4] = ccell_results.m_astc_low_endpoint.m_c[2]; - astc_results.m_endpoints[5] = ccell_results.m_astc_high_endpoint.m_c[2]; - astc_results.m_endpoints[6] = ccell_results.m_astc_low_endpoint.m_c[3]; - astc_results.m_endpoints[7] = ccell_results.m_astc_high_endpoint.m_c[3]; - - bool invert = false; - - int s0 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[0]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[2]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[4]].m_unquant; - int s1 = g_astc_unquant[endpoint_range][astc_results.m_endpoints[1]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[3]].m_unquant + g_astc_unquant[endpoint_range][astc_results.m_endpoints[5]].m_unquant; - if (s1 < s0) - { - std::swap(astc_results.m_endpoints[0], astc_results.m_endpoints[1]); - std::swap(astc_results.m_endpoints[2], astc_results.m_endpoints[3]); - std::swap(astc_results.m_endpoints[4], astc_results.m_endpoints[5]); - std::swap(astc_results.m_endpoints[6], astc_results.m_endpoints[7]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - if (invert) - astc_results.m_weights[x + y * 4] = 3 - astc_results.m_weights[x + y * 4]; - } - } - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 14; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = part_err; - total_results++; - } - } - - // MODE 15 - // DualPlane: 0, WeightRange : 8 (16), Subsets : 1, CEM : 4 (LA Direct), EndpointRange : 20 (256) BC7 MODE6 - static void astc_mode15(const color_rgba block[4][4], uastc_encode_results* pResults, uint32_t& total_results, bc7enc_compress_block_params& comp_params) - { - const uint32_t weight_range = 8; - const uint32_t endpoint_range = 20; - - color_cell_compressor_params ccell_params; - memset(&ccell_params, 0, sizeof(ccell_params)); - - color_rgba temp_block[16]; - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t l = ((const color_rgba*)block)[i].r; - const uint32_t a = ((const color_rgba*)block)[i].a; - - // Use (l,0,0,a) not (l,l,l,a) so both components are treated equally. - temp_block[i].set_noclamp_rgba(l, 0, 0, a); - } - - ccell_params.m_num_pixels = 16; - //ccell_params.m_pPixels = (color_quad_u8*)&block[0][0]; - ccell_params.m_pPixels = (color_quad_u8*)temp_block; - ccell_params.m_num_selector_weights = 16; - ccell_params.m_pSelector_weights = g_astc_weights4; - ccell_params.m_pSelector_weightsx = (const bc7enc_vec4F*)g_astc_weights4x; - ccell_params.m_astc_endpoint_range = endpoint_range; - ccell_params.m_weights[0] = 1; - ccell_params.m_weights[1] = 1; - ccell_params.m_weights[2] = 1; - ccell_params.m_weights[3] = 1; - ccell_params.m_has_alpha = true; - - color_cell_compressor_results ccell_results; - uint8_t ccell_result_selectors[16]; - uint8_t ccell_result_selectors_temp[16]; - memset(&ccell_results, 0, sizeof(ccell_results)); - ccell_results.m_pSelectors = &ccell_result_selectors[0]; - ccell_results.m_pSelectors_temp = &ccell_result_selectors_temp[0]; - - color_cell_compression(255, &ccell_params, &ccell_results, &comp_params); - - // ASTC - astc_block_desc astc_results; - memset(&astc_results, 0, sizeof(astc_results)); - - astc_results.m_dual_plane = false; - astc_results.m_weight_range = weight_range; - - astc_results.m_ccs = 0; - astc_results.m_subsets = 1; - astc_results.m_partition_seed = 0; - astc_results.m_cem = 4; - - astc_results.m_endpoints[0] = ccell_results.m_astc_low_endpoint.m_c[0]; - astc_results.m_endpoints[1] = ccell_results.m_astc_high_endpoint.m_c[0]; - - astc_results.m_endpoints[2] = ccell_results.m_astc_low_endpoint.m_c[3]; - astc_results.m_endpoints[3] = ccell_results.m_astc_high_endpoint.m_c[3]; - - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - astc_results.m_weights[x + y * 4] = ccell_result_selectors[x + y * 4]; - - color_rgba colors[16]; - for (uint32_t c = 0; c < 4; c++) - { - colors[0].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results.m_astc_low_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; - colors[15].m_comps[c] = g_astc_unquant[endpoint_range][ccell_results.m_astc_high_endpoint.m_c[(c < 3) ? 0 : 3]].m_unquant; - } - - for (uint32_t i = 1; i < 16 - 1; i++) - for (uint32_t c = 0; c < 4; c++) - colors[i].m_comps[c] = (uint8_t)astc_interpolate(colors[0].m_comps[c], colors[15].m_comps[c], g_astc_weights4[i], false); - - uint64_t total_err = 0; - for (uint32_t p = 0; p < 16; p++) - total_err += color_distance_la(((const color_rgba*)block)[p], colors[ccell_result_selectors[p]]); - - assert(total_results < MAX_ENCODE_RESULTS); - if (total_results < MAX_ENCODE_RESULTS) - { - pResults[total_results].m_uastc_mode = 15; - pResults[total_results].m_common_pattern = 0; - pResults[total_results].m_astc = astc_results; - pResults[total_results].m_astc_err = total_err; - total_results++; - } - } - - static void compute_block_error(const color_rgba block[4][4], const color_rgba decoded_block[4][4], uint64_t &total_rgb_err, uint64_t &total_rgba_err, uint64_t &total_la_err) - { - uint64_t total_err_r = 0, total_err_g = 0, total_err_b = 0, total_err_a = 0; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const int dr = (int)block[y][x].m_comps[0] - (int)decoded_block[y][x].m_comps[0]; - const int dg = (int)block[y][x].m_comps[1] - (int)decoded_block[y][x].m_comps[1]; - const int db = (int)block[y][x].m_comps[2] - (int)decoded_block[y][x].m_comps[2]; - const int da = (int)block[y][x].m_comps[3] - (int)decoded_block[y][x].m_comps[3]; - - total_err_r += dr * dr; - total_err_g += dg * dg; - total_err_b += db * db; - total_err_a += da * da; - } - } - - total_la_err = total_err_r + total_err_a; - total_rgb_err = total_err_r + total_err_g + total_err_b; - total_rgba_err = total_rgb_err + total_err_a; - } - - static void compute_bc1_hints(bool &bc1_hint0, bool &bc1_hint1, const uastc_encode_results &best_results, const color_rgba block[4][4], const color_rgba decoded_uastc_block[4][4]) - { - const uint32_t best_mode = best_results.m_uastc_mode; - const bool perceptual = false; - - bc1_hint0 = false; - bc1_hint1 = false; - - if (best_mode == UASTC_MODE_INDEX_SOLID_COLOR) - return; - - if (!g_uastc_mode_has_bc1_hint0[best_mode] && !g_uastc_mode_has_bc1_hint1[best_mode]) - return; - - color_rgba tblock_bc1[4][4]; - dxt1_block tbc1_block[8]; - basist::encode_bc1(tbc1_block, (const uint8_t*)&decoded_uastc_block[0][0], 0); - unpack_block(texture_format::cBC1, tbc1_block, &tblock_bc1[0][0]); - - color_rgba tblock_hint0_bc1[4][4]; - color_rgba tblock_hint1_bc1[4][4]; - - etc_block etc1_blk; - memset(&etc1_blk, 0, sizeof(etc1_blk)); - - eac_a8_block etc2_blk; - memset(&etc2_blk, 0, sizeof(etc2_blk)); - etc2_blk.m_multiplier = 1; - - // Pack to UASTC, then unpack, because the endpoints may be swapped. - - uastc_block temp_ublock; - pack_uastc(temp_ublock, best_results, etc1_blk, 0, etc2_blk, false, false); - - unpacked_uastc_block temp_ublock_unpacked; - unpack_uastc(temp_ublock, temp_ublock_unpacked, false); - - unpacked_uastc_block ublock; - memset(&ublock, 0, sizeof(ublock)); - ublock.m_mode = best_results.m_uastc_mode; - ublock.m_common_pattern = best_results.m_common_pattern; - ublock.m_astc = temp_ublock_unpacked.m_astc; - - dxt1_block b; - - // HINT1 - if (!g_uastc_mode_has_bc1_hint1[best_mode]) - { - memset(tblock_hint1_bc1, 0, sizeof(tblock_hint1_bc1)); - } - else - { - transcode_uastc_to_bc1_hint1(ublock, (color32 (*)[4]) decoded_uastc_block, &b, false); - - unpack_block(texture_format::cBC1, &b, &tblock_hint1_bc1[0][0]); - } - - // HINT0 - if (!g_uastc_mode_has_bc1_hint0[best_mode]) - { - memset(tblock_hint0_bc1, 0, sizeof(tblock_hint0_bc1)); - } - else - { - transcode_uastc_to_bc1_hint0(ublock, &b); - - unpack_block(texture_format::cBC1, &b, &tblock_hint0_bc1[0][0]); - } - - // Compute block errors - uint64_t total_t_err = 0, total_hint0_err = 0, total_hint1_err = 0; - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - total_t_err += color_distance(perceptual, block[y][x], tblock_bc1[y][x], false); - total_hint0_err += color_distance(perceptual, block[y][x], tblock_hint0_bc1[y][x], false); - total_hint1_err += color_distance(perceptual, block[y][x], tblock_hint1_bc1[y][x], false); - } - } - - const float t_err = sqrtf((float)total_t_err); - const float t_err_hint0 = sqrtf((float)total_hint0_err); - const float t_err_hint1 = sqrtf((float)total_hint1_err); - - const float err_thresh0 = 1.075f; - const float err_thresh1 = 1.075f; - - if ((g_uastc_mode_has_bc1_hint0[best_mode]) && (t_err_hint0 <= t_err * err_thresh0)) - bc1_hint0 = true; - - if ((g_uastc_mode_has_bc1_hint1[best_mode]) && (t_err_hint1 <= t_err * err_thresh1)) - bc1_hint1 = true; - } - - struct ycbcr - { - int32_t m_y; - int32_t m_cb; - int32_t m_cr; - }; - - static inline void rgb_to_y_cb_cr(const color_rgba& c, ycbcr& dst) - { - const int y = c.r * 54 + c.g * 183 + c.b * 19; - dst.m_y = y; - dst.m_cb = (c.b << 8) - y; - dst.m_cr = (c.r << 8) - y; - } - - static inline uint64_t color_diff(const ycbcr& a, const ycbcr& b) - { - const int y_delta = a.m_y - b.m_y; - const int cb_delta = a.m_cb - b.m_cb; - const int cr_delta = a.m_cr - b.m_cr; - return ((int64_t)y_delta * y_delta * 4) + ((int64_t)cr_delta * cr_delta) + ((int64_t)cb_delta * cb_delta); - } - - static inline int gray_distance2(const color_rgba& c, int r, int g, int b) - { - int gray_dist = (((int)c[0] - r) + ((int)c[1] - g) + ((int)c[2] - b) + 1) / 3; - - int gray_point_r = clamp255(r + gray_dist); - int gray_point_g = clamp255(g + gray_dist); - int gray_point_b = clamp255(b + gray_dist); - - int dist_to_gray_point_r = c[0] - gray_point_r; - int dist_to_gray_point_g = c[1] - gray_point_g; - int dist_to_gray_point_b = c[2] - gray_point_b; - - return (dist_to_gray_point_r * dist_to_gray_point_r) + (dist_to_gray_point_g * dist_to_gray_point_g) + (dist_to_gray_point_b * dist_to_gray_point_b); - } - - static bool pack_etc1_estimate_flipped(const color_rgba* pSrc_pixels) - { - int sums[3][2][2]; - -#define GET_XY(x, y, c) pSrc_pixels[(x) + ((y) * 4)][c] - - for (uint32_t c = 0; c < 3; c++) - { - sums[c][0][0] = GET_XY(0, 0, c) + GET_XY(0, 1, c) + GET_XY(1, 0, c) + GET_XY(1, 1, c); - sums[c][1][0] = GET_XY(2, 0, c) + GET_XY(2, 1, c) + GET_XY(3, 0, c) + GET_XY(3, 1, c); - sums[c][0][1] = GET_XY(0, 2, c) + GET_XY(0, 3, c) + GET_XY(1, 2, c) + GET_XY(1, 3, c); - sums[c][1][1] = GET_XY(2, 2, c) + GET_XY(2, 3, c) + GET_XY(3, 2, c) + GET_XY(3, 3, c); - } - - int upper_avg[3], lower_avg[3], left_avg[3], right_avg[3]; - for (uint32_t c = 0; c < 3; c++) - { - upper_avg[c] = (sums[c][0][0] + sums[c][1][0] + 4) / 8; - lower_avg[c] = (sums[c][0][1] + sums[c][1][1] + 4) / 8; - left_avg[c] = (sums[c][0][0] + sums[c][0][1] + 4) / 8; - right_avg[c] = (sums[c][1][0] + sums[c][1][1] + 4) / 8; - } - -#undef GET_XY -#define GET_XY(x, y, a) gray_distance2(pSrc_pixels[(x) + ((y) * 4)], a[0], a[1], a[2]) - - int upper_gray_dist = 0, lower_gray_dist = 0, left_gray_dist = 0, right_gray_dist = 0; - for (uint32_t i = 0; i < 4; i++) - { - for (uint32_t j = 0; j < 2; j++) - { - upper_gray_dist += GET_XY(i, j, upper_avg); - lower_gray_dist += GET_XY(i, 2 + j, lower_avg); - left_gray_dist += GET_XY(j, i, left_avg); - right_gray_dist += GET_XY(2 + j, i, right_avg); - } - } - -#undef GET_XY - - int upper_lower_sum = upper_gray_dist + lower_gray_dist; - int left_right_sum = left_gray_dist + right_gray_dist; - - return upper_lower_sum < left_right_sum; - } - - static void compute_etc1_hints(etc_block& best_etc1_blk, uint32_t& best_etc1_bias, const uastc_encode_results& best_results, const color_rgba block[4][4], const color_rgba decoded_uastc_block[4][4], int level, uint32_t flags) - { - best_etc1_bias = 0; - - if (best_results.m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - pack_etc1_block_solid_color(best_etc1_blk, &best_results.m_solid_color.m_comps[0]); - return; - } - - const bool faster_etc1 = (flags & cPackUASTCETC1FasterHints) != 0; - const bool fastest_etc1 = (flags & cPackUASTCETC1FastestHints) != 0; - - const bool has_bias = g_uastc_mode_has_etc1_bias[best_results.m_uastc_mode]; - - // 0 should be at the top, but we need 13 first because it represents bias (0,0,0). - const uint8_t s_sorted_bias_modes[32] = { 13, 0, 22, 29, 27, 12, 26, 9, 30, 31, 8, 10, 25, 2, 23, 5, 15, 7, 3, 11, 6, 17, 28, 18, 1, 19, 20, 21, 24, 4, 14, 16 }; - - uint32_t last_bias = 1; - bool use_faster_bias_mode_table = false; - const bool flip_estimate = (level <= cPackUASTCLevelFaster) || (faster_etc1) || (fastest_etc1); - if (has_bias) - { - switch (level) - { - case cPackUASTCLevelFastest: - { - last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 1 : 2); - use_faster_bias_mode_table = true; - break; - } - case cPackUASTCLevelFaster: - { - last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 3 : 5); - use_faster_bias_mode_table = true; - break; - } - case cPackUASTCLevelDefault: - { - last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 10 : 20); - use_faster_bias_mode_table = true; - break; - } - case cPackUASTCLevelSlower: - { - last_bias = fastest_etc1 ? 1 : (faster_etc1 ? 16 : 32); - use_faster_bias_mode_table = true; - break; - } - default: - { - last_bias = 32; - break; - } - } - } - - memset(&best_etc1_blk, 0, sizeof(best_etc1_blk)); - uint64_t best_err = UINT64_MAX; - - etc_block trial_block; - memset(&trial_block, 0, sizeof(trial_block)); - - ycbcr block_ycbcr[4][4], decoded_uastc_block_ycbcr[4][4]; - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - rgb_to_y_cb_cr(block[y][x], block_ycbcr[y][x]); - rgb_to_y_cb_cr(decoded_uastc_block[y][x], decoded_uastc_block_ycbcr[y][x]); - } - } - - uint32_t first_flip = 0, last_flip = 2; - uint32_t first_individ = 0, last_individ = 2; - - if (flags & cPackUASTCETC1DisableFlipAndIndividual) - { - last_flip = 1; - last_individ = 1; - } - else if (flip_estimate) - { - if (pack_etc1_estimate_flipped(&decoded_uastc_block[0][0])) - first_flip = 1; - last_flip = first_flip + 1; - } - - for (uint32_t flip = first_flip; flip < last_flip; flip++) - { - trial_block.set_flip_bit(flip != 0); - - for (uint32_t individ = first_individ; individ < last_individ; individ++) - { - const uint32_t mul = individ ? 15 : 31; - - trial_block.set_diff_bit(individ == 0); - - color_rgba unbiased_block_colors[2]; - - int min_r[2] = { 255, 255 }, min_g[2] = { 255, 255 }, min_b[2] = { 255, 255 }, max_r[2] = { 0, 0 }, max_g[2] = { 0, 0 }, max_b[2] = { 0, 0 }; - - for (uint32_t subset = 0; subset < 2; subset++) - { - uint32_t avg_color[3]; - memset(avg_color, 0, sizeof(avg_color)); - - for (uint32_t j = 0; j < 8; j++) - { - const etc_coord2 &c = g_etc1_pixel_coords[flip][subset][j]; - const color_rgba& p = decoded_uastc_block[c.m_y][c.m_x]; - - avg_color[0] += p.r; - avg_color[1] += p.g; - avg_color[2] += p.b; - - min_r[subset] = basisu::minimum(min_r[subset], p.r); - min_g[subset] = basisu::minimum(min_g[subset], p.g); - min_b[subset] = basisu::minimum(min_b[subset], p.b); - - max_r[subset] = basisu::maximum(max_r[subset], p.r); - max_g[subset] = basisu::maximum(max_g[subset], p.g); - max_b[subset] = basisu::maximum(max_b[subset], p.b); - } // j - - unbiased_block_colors[subset][0] = (uint8_t)((avg_color[0] * mul + 1020) / (8 * 255)); - unbiased_block_colors[subset][1] = (uint8_t)((avg_color[1] * mul + 1020) / (8 * 255)); - unbiased_block_colors[subset][2] = (uint8_t)((avg_color[2] * mul + 1020) / (8 * 255)); - unbiased_block_colors[subset][3] = 0; - - } // subset - - for (uint32_t bias_iter = 0; bias_iter < last_bias; bias_iter++) - { - const uint32_t bias = use_faster_bias_mode_table ? s_sorted_bias_modes[bias_iter] : bias_iter; - - color_rgba block_colors[2]; - for (uint32_t subset = 0; subset < 2; subset++) - block_colors[subset] = has_bias ? apply_etc1_bias((color32&)unbiased_block_colors[subset], bias, mul, subset) : unbiased_block_colors[subset]; - - if (individ) - trial_block.set_block_color4(block_colors[0], block_colors[1]); - else - trial_block.set_block_color5_clamp(block_colors[0], block_colors[1]); - - uint32_t range[2]; - for (uint32_t subset = 0; subset < 2; subset++) - { - const color_rgba base_c(trial_block.get_block_color(subset, true)); - - const int pos_r = iabs(max_r[subset] - base_c.r); - const int neg_r = iabs(base_c.r - min_r[subset]); - - const int pos_g = iabs(max_g[subset] - base_c.g); - const int neg_g = iabs(base_c.g - min_g[subset]); - - const int pos_b = iabs(max_b[subset] - base_c.b); - const int neg_b = iabs(base_c.b - min_b[subset]); - - range[subset] = maximum(maximum(pos_r, neg_r, pos_g, neg_g), pos_b, neg_b); - } - - uint32_t best_inten_table[2] = { 0, 0 }; - - for (uint32_t subset = 0; subset < 2; subset++) - { - uint64_t best_subset_err = UINT64_MAX; - - const uint32_t inten_table_limit = (level == cPackUASTCLevelVerySlow) ? 8 : ((range[subset] > 51) ? 8 : (range[subset] >= 7 ? 4 : 2)); - - for (uint32_t inten_table = 0; inten_table < inten_table_limit; inten_table++) - { - trial_block.set_inten_table(subset, inten_table); - - color_rgba color_table[4]; - trial_block.get_block_colors(color_table, subset); - - ycbcr color_table_ycbcr[4]; - for (uint32_t i = 0; i < 4; i++) - rgb_to_y_cb_cr(color_table[i], color_table_ycbcr[i]); - - uint64_t total_error = 0; - if (flip) - { - for (uint32_t y = 0; y < 2; y++) - { - { - const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][0]; - total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); - } - { - const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][1]; - total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); - } - { - const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][2]; - total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); - } - { - const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][3]; - total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); - } - if (total_error >= best_subset_err) - break; - } - } - else - { - for (uint32_t y = 0; y < 4; y++) - { - { - const ycbcr& c = decoded_uastc_block_ycbcr[y][subset * 2 + 0]; - total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); - } - { - const ycbcr& c = decoded_uastc_block_ycbcr[y][subset * 2 + 1]; - total_error += minimum(color_diff(color_table_ycbcr[0], c), color_diff(color_table_ycbcr[1], c), color_diff(color_table_ycbcr[2], c), color_diff(color_table_ycbcr[3], c)); - } - } - if (total_error >= best_subset_err) - break; - } - - if (total_error < best_subset_err) - { - best_subset_err = total_error; - best_inten_table[subset] = inten_table; - } - - } // inten_table - - } // subset - - trial_block.set_inten_table(0, best_inten_table[0]); - trial_block.set_inten_table(1, best_inten_table[1]); - - // Compute error against the ORIGINAL block. - uint64_t err = 0; - - for (uint32_t subset = 0; subset < 2; subset++) - { - color_rgba color_table[4]; - trial_block.get_block_colors(color_table, subset); - - ycbcr color_table_ycbcr[4]; - for (uint32_t i = 0; i < 4; i++) - rgb_to_y_cb_cr(color_table[i], color_table_ycbcr[i]); - - if (flip) - { - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const ycbcr& c = decoded_uastc_block_ycbcr[subset * 2 + y][x]; - const uint64_t best_index_err = minimum(color_diff(color_table_ycbcr[0], c) << 2, (color_diff(color_table_ycbcr[1], c) << 2) + 1, (color_diff(color_table_ycbcr[2], c) << 2) + 2, (color_diff(color_table_ycbcr[3], c) << 2) + 3); - - const uint32_t best_index = (uint32_t)best_index_err & 3; - err += color_diff(block_ycbcr[subset * 2 + y][x], color_table_ycbcr[best_index]); - } - if (err >= best_err) - break; - } - } - else - { - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - const ycbcr& c = decoded_uastc_block_ycbcr[y][subset * 2 + x]; - const uint64_t best_index_err = minimum(color_diff(color_table_ycbcr[0], c) << 2, (color_diff(color_table_ycbcr[1], c) << 2) + 1, (color_diff(color_table_ycbcr[2], c) << 2) + 2, (color_diff(color_table_ycbcr[3], c) << 2) + 3); - - const uint32_t best_index = (uint32_t)best_index_err & 3; - err += color_diff(block_ycbcr[y][subset * 2 + x], color_table_ycbcr[best_index]); - } - if (err >= best_err) - break; - } - } - - } // subset - - if (err < best_err) - { - best_err = err; - - best_etc1_blk = trial_block; - best_etc1_bias = bias; - } - - } // bias_iter - - } // individ - - } // flip - } - - struct uastc_pack_eac_a8_results - { - uint32_t m_base; - uint32_t m_table; - uint32_t m_multiplier; - }; - - static uint64_t uastc_pack_eac_a8(uastc_pack_eac_a8_results& results, const uint8_t* pPixels, uint32_t num_pixels, uint32_t base_search_rad, uint32_t mul_search_rad, uint32_t table_mask) - { - assert(num_pixels <= 16); - - uint32_t min_alpha = 255, max_alpha = 0; - for (uint32_t i = 0; i < num_pixels; i++) - { - const uint32_t a = pPixels[i]; - if (a < min_alpha) min_alpha = a; - if (a > max_alpha) max_alpha = a; - } - - if (min_alpha == max_alpha) - { - results.m_base = min_alpha; - results.m_table = 13; - results.m_multiplier = 1; - return 0; - } - - const uint32_t alpha_range = max_alpha - min_alpha; - - uint64_t best_err = UINT64_MAX; - - for (uint32_t table = 0; table < 16; table++) - { - if ((table_mask & (1U << table)) == 0) - continue; - - const float range = (float)(g_etc2_eac_tables[table][ETC2_EAC_MAX_VALUE_SELECTOR] - g_etc2_eac_tables[table][ETC2_EAC_MIN_VALUE_SELECTOR]); - const int center = (int)roundf(lerp((float)min_alpha, (float)max_alpha, (float)(0 - g_etc2_eac_tables[table][ETC2_EAC_MIN_VALUE_SELECTOR]) / range)); - - const int base_min = clamp255(center - base_search_rad); - const int base_max = clamp255(center + base_search_rad); - - const int mul = (int)roundf(alpha_range / range); - const int mul_low = clamp(mul - mul_search_rad, 1, 15); - const int mul_high = clamp(mul + mul_search_rad, 1, 15); - - for (int base = base_min; base <= base_max; base++) - { - for (int multiplier = mul_low; multiplier <= mul_high; multiplier++) - { - uint64_t total_err = 0; - - for (uint32_t i = 0; i < num_pixels; i++) - { - const int a = pPixels[i]; - - uint32_t best_s_err = UINT32_MAX; - //uint32_t best_s = 0; - for (uint32_t s = 0; s < 8; s++) - { - const int v = clamp255((int)multiplier * g_etc2_eac_tables[table][s] + (int)base); - - uint32_t err = iabs(a - v); - if (err < best_s_err) - { - best_s_err = err; - //best_s = s; - } - } - - total_err += best_s_err * best_s_err; - if (total_err >= best_err) - break; - } - - if (total_err < best_err) - { - best_err = total_err; - results.m_base = base; - results.m_multiplier = multiplier; - results.m_table = table; - if (!best_err) - return best_err; - } - - } // table - - } // multiplier - - } // base - - return best_err; - } - - const int32_t DEFAULT_BC7_ERROR_WEIGHT = 50; - const float UASTC_ERROR_THRESH = 1.3f; - - // TODO: This is a quick hack to favor certain modes when we know we'll be followed up with an RDO postprocess. - static inline float get_uastc_mode_weight(uint32_t mode) - { - const float FAVORED_MODE_WEIGHT = .8f; - - switch (mode) - { - case 0: - case 10: - return FAVORED_MODE_WEIGHT; - default: - break; - } - - return 1.0f; - } - - void encode_uastc(const uint8_t* pRGBAPixels, uastc_block& output_block, uint32_t flags) - { -// printf("encode_uastc: \n"); -// for (int i = 0; i < 16; i++) -// printf("[%u %u %u %u] ", pRGBAPixels[i * 4 + 0], pRGBAPixels[i * 4 + 1], pRGBAPixels[i * 4 + 2], pRGBAPixels[i * 4 + 3]); -// printf("\n"); - - const color_rgba(*block)[4] = reinterpret_cast(pRGBAPixels); - - bool solid_color = true, has_alpha = false, is_la = true; - - const color_rgba first_color(block[0][0]); - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - if (block[y][x].a < 255) - has_alpha = true; - - if (block[y][x] != first_color) - solid_color = false; - - if ((block[y][x].r != block[y][x].g) || (block[y][x].r != block[y][x].b)) - is_la = false; - } - } - - if (solid_color) - { - // Solid color blocks are so common that we handle them specially and as quickly as we can. - uastc_encode_results solid_results; - solid_results.m_uastc_mode = UASTC_MODE_INDEX_SOLID_COLOR; - solid_results.m_astc_err = 0; - solid_results.m_common_pattern = 0; - solid_results.m_solid_color = first_color; - memset(&solid_results.m_astc, 0, sizeof(solid_results.m_astc)); - - etc_block etc1_blk; - uint32_t etc1_bias = 0; - - pack_etc1_block_solid_color(etc1_blk, &first_color.m_comps[0]); - - eac_a8_block eac_a8_blk; - eac_a8_blk.m_table = 0; - eac_a8_blk.m_multiplier = 1; - - pack_uastc(output_block, solid_results, etc1_blk, etc1_bias, eac_a8_blk, false, false); - -// printf(" Solid\n"); - - return; - } - - int level = flags & 7; - const bool favor_uastc_error = (flags & cPackUASTCFavorUASTCError) != 0; - const bool favor_bc7_error = !favor_uastc_error && ((flags & cPackUASTCFavorBC7Error) != 0); - //const bool etc1_perceptual = true; - - uastc_encode_results results[MAX_ENCODE_RESULTS]; - - level = clampi(level, cPackUASTCLevelFastest, cPackUASTCLevelVerySlow); - - // Set all options to slowest, then configure from there depending on the selected level. - uint32_t mode_mask = UINT32_MAX; - uint32_t uber_level = 6; - bool estimate_partition = false; - bool always_try_alpha_modes = true; - uint32_t eac_a8_mul_search_rad = 3; - uint32_t eac_a8_table_mask = UINT32_MAX; - uint32_t least_squares_passes = 2; - bool bc1_hints = true; - bool only_use_la_on_transparent_blocks = false; - - switch (level) - { - case cPackUASTCLevelFastest: - { - mode_mask = (1 << 0) | (1 << 8) | - (1 << 11) | (1 << 12) | - (1 << 15); - always_try_alpha_modes = false; - eac_a8_mul_search_rad = 0; - eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); - uber_level = 0; - least_squares_passes = 1; - bc1_hints = false; - estimate_partition = true; - only_use_la_on_transparent_blocks = true; - break; - } - case cPackUASTCLevelFaster: - { - mode_mask = (1 << 0) | (1 << 4) | (1 << 6) | (1 << 8) | - (1 << 9) | (1 << 11) | (1 << 12) | - (1 << 15) | (1 << 17); - always_try_alpha_modes = false; - eac_a8_mul_search_rad = 0; - eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); - uber_level = 0; - least_squares_passes = 1; - estimate_partition = true; - break; - } - case cPackUASTCLevelDefault: - { - mode_mask = (1 << 0) | (1 << 1) | (1 << 4) | (1 << 5) | (1 << 6) | (1 << 8) | - (1 << 9) | (1 << 10) | (1 << 11) | (1 << 12) | (1 << 13) | - (1 << 15) | (1 << 16) | (1 << 17); - always_try_alpha_modes = false; - eac_a8_mul_search_rad = 1; - eac_a8_table_mask = (1 << 0) | (1 << 2) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 10) | (1 << 11) | (1 << 13); - uber_level = 1; - least_squares_passes = 1; - estimate_partition = true; - break; - } - case cPackUASTCLevelSlower: - { - always_try_alpha_modes = false; - eac_a8_mul_search_rad = 2; - uber_level = 3; - estimate_partition = true; - break; - } - case cPackUASTCLevelVerySlow: - { - break; - } - } - -#if BASISU_SUPPORT_FORCE_MODE - static int force_mode = -1; - force_mode = (force_mode + 1) % TOTAL_UASTC_MODES; - mode_mask = UINT32_MAX; - always_try_alpha_modes = true; - only_use_la_on_transparent_blocks = false; -#endif - - // HACK HACK - //mode_mask &= ~(1 << 18); - //mode_mask = (1 << 18)| (1 << 10); - - uint32_t total_results = 0; - - if (only_use_la_on_transparent_blocks) - { - if ((is_la) && (!has_alpha)) - is_la = false; - } - - const bool try_alpha_modes = has_alpha || always_try_alpha_modes; - - bc7enc_compress_block_params comp_params; - memset(&comp_params, 0, sizeof(comp_params)); - comp_params.m_max_partitions_mode1 = 64; - comp_params.m_least_squares_passes = least_squares_passes; - comp_params.m_weights[0] = 1; - comp_params.m_weights[1] = 1; - comp_params.m_weights[2] = 1; - comp_params.m_weights[3] = 1; - comp_params.m_uber_level = uber_level; - - if (is_la) - { - if (mode_mask & (1U << 15)) - astc_mode15(block, results, total_results, comp_params); - - if (mode_mask & (1U << 16)) - astc_mode9_or_16(16, block, results, total_results, comp_params, estimate_partition ? 4 : 0); - - if (mode_mask & (1U << 17)) - astc_mode11_or_17(17, block, results, total_results, comp_params); - } - - if (!has_alpha) - { - if (mode_mask & (1U << 0)) - astc_mode0_or_18(0, block, results, total_results, comp_params); - - if (mode_mask & (1U << 1)) - astc_mode1(block, results, total_results, comp_params); - - if (mode_mask & (1U << 2)) - astc_mode2(block, results, total_results, comp_params, estimate_partition); - - if (mode_mask & (1U << 3)) - astc_mode3(block, results, total_results, comp_params, estimate_partition); - - if (mode_mask & (1U << 4)) - astc_mode4(block, results, total_results, comp_params, estimate_partition); - - if (mode_mask & (1U << 5)) - astc_mode5(block, results, total_results, comp_params); - - if (mode_mask & (1U << 6)) - astc_mode6(block, results, total_results, comp_params); - - if (mode_mask & (1U << 7)) - astc_mode7(block, results, total_results, comp_params, estimate_partition); - - if (mode_mask & (1U << 18)) - astc_mode0_or_18(18, block, results, total_results, comp_params); - } - - if (try_alpha_modes) - { - if (mode_mask & (1U << 9)) - astc_mode9_or_16(9, block, results, total_results, comp_params, estimate_partition ? 4 : 0); - - if (mode_mask & (1U << 10)) - astc_mode10(block, results, total_results, comp_params); - - if (mode_mask & (1U << 11)) - astc_mode11_or_17(11, block, results, total_results, comp_params); - - if (mode_mask & (1U << 12)) - astc_mode12(block, results, total_results, comp_params); - - if (mode_mask & (1U << 13)) - astc_mode13(block, results, total_results, comp_params); - - if (mode_mask & (1U << 14)) - astc_mode14(block, results, total_results, comp_params); - } - - assert(total_results); - - // Fix up the errors so we consistently have LA, RGB, or RGBA error. - for (uint32_t i = 0; i < total_results; i++) - { - uastc_encode_results& r = results[i]; - if (!is_la) - { - if (g_uastc_mode_is_la[r.m_uastc_mode]) - { - color_rgba unpacked_block[16]; - unpack_uastc(r.m_uastc_mode, r.m_common_pattern, r.m_solid_color.get_color32(), r.m_astc, (basist::color32 *)unpacked_block, false); - - uint64_t total_err = 0; - for (uint32_t j = 0; j < 16; j++) - total_err += color_distance(unpacked_block[j], ((const color_rgba*)block)[j], true); - - r.m_astc_err = total_err; - } - } - else - { - if (!g_uastc_mode_is_la[r.m_uastc_mode]) - { - color_rgba unpacked_block[16]; - unpack_uastc(r.m_uastc_mode, r.m_common_pattern, r.m_solid_color.get_color32(), r.m_astc, (basist::color32 *)unpacked_block, false); - - uint64_t total_err = 0; - for (uint32_t j = 0; j < 16; j++) - total_err += color_distance_la(unpacked_block[j], ((const color_rgba*)block)[j]); - - r.m_astc_err = total_err; - } - } - } - - unpacked_uastc_block unpacked_ublock; - memset(&unpacked_ublock, 0, sizeof(unpacked_ublock)); - - uint64_t total_overall_err[MAX_ENCODE_RESULTS]; - float uastc_err_f[MAX_ENCODE_RESULTS]; - double best_uastc_err_f = 1e+20f; - - int best_index = -1; - - if (total_results == 1) - { - best_index = 0; - } - else - { - const uint32_t bc7_err_weight = favor_bc7_error ? 100 : ((favor_uastc_error ? 0 : DEFAULT_BC7_ERROR_WEIGHT)); - const uint32_t uastc_err_weight = favor_bc7_error ? 0 : 100; - - // Find best overall results, balancing UASTC and UASTC->BC7 error. - // We purposely allow UASTC error to increase a little, if doing so lowers the BC7 error. - for (uint32_t i = 0; i < total_results; i++) - { -#if BASISU_SUPPORT_FORCE_MODE - if (results[i].m_uastc_mode == force_mode) - { - best_index = i; - break; - } -#endif - - unpacked_ublock.m_mode = results[i].m_uastc_mode; - unpacked_ublock.m_astc = results[i].m_astc; - unpacked_ublock.m_common_pattern = results[i].m_common_pattern; - unpacked_ublock.m_solid_color = results[i].m_solid_color.get_color32(); - - color_rgba decoded_uastc_block[4][4]; - bool success = unpack_uastc(results[i].m_uastc_mode, results[i].m_common_pattern, results[i].m_solid_color.get_color32(), results[i].m_astc, (basist::color32 *)&decoded_uastc_block[0][0], false); - (void)success; - VALIDATE(success); - - uint64_t total_uastc_rgb_err, total_uastc_rgba_err, total_uastc_la_err; - compute_block_error(block, decoded_uastc_block, total_uastc_rgb_err, total_uastc_rgba_err, total_uastc_la_err); - - // Validate the computed error, or we're go mad if it's inaccurate. - if (results[i].m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - VALIDATE(total_uastc_rgba_err == 0); - } - else if (is_la) - { - VALIDATE(total_uastc_la_err == results[i].m_astc_err); - } - else if (g_uastc_mode_has_alpha[results[i].m_uastc_mode]) - { - VALIDATE(total_uastc_rgba_err == results[i].m_astc_err); - } - else - { - VALIDATE(total_uastc_rgb_err == results[i].m_astc_err); - } - - // Transcode to BC7 - bc7_optimization_results bc7_results; - transcode_uastc_to_bc7(unpacked_ublock, bc7_results); - - bc7_block bc7_data; - encode_bc7_block(&bc7_data, &bc7_results); - - color_rgba decoded_bc7_block[4][4]; - unpack_block(texture_format::cBC7, &bc7_data, &decoded_bc7_block[0][0]); - - // Compute BC7 error - uint64_t total_bc7_la_err, total_bc7_rgb_err, total_bc7_rgba_err; - compute_block_error(block, decoded_bc7_block, total_bc7_rgb_err, total_bc7_rgba_err, total_bc7_la_err); - - if (results[i].m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - VALIDATE(total_bc7_rgba_err == 0); - - best_index = i; - break; - } - - uint64_t total_uastc_err = 0, total_bc7_err = 0; - if (is_la) - { - total_bc7_err = total_bc7_la_err; - total_uastc_err = total_uastc_la_err; - } - else if (has_alpha) - { - total_bc7_err = total_bc7_rgba_err; - total_uastc_err = total_uastc_rgba_err; - } - else - { - total_bc7_err = total_bc7_rgb_err; - total_uastc_err = total_uastc_rgb_err; - } - - total_overall_err[i] = ((total_bc7_err * bc7_err_weight) / 100) + ((total_uastc_err * uastc_err_weight) / 100); - if (!total_overall_err[i]) - { - best_index = i; - break; - } - - uastc_err_f[i] = sqrtf((float)total_uastc_err); - - if (uastc_err_f[i] < best_uastc_err_f) - { - best_uastc_err_f = uastc_err_f[i]; - } - - } // total_results - - if (best_index < 0) - { - uint64_t best_err = UINT64_MAX; - - if ((best_uastc_err_f == 0.0f) || (favor_bc7_error)) - { - for (uint32_t i = 0; i < total_results; i++) - { - // TODO: This is a quick hack to favor modes 0 or 10 for better RDO compression. - const float err_weight = (flags & cPackUASTCFavorSimplerModes) ? get_uastc_mode_weight(results[i].m_uastc_mode) : 1.0f; - - const uint64_t w = (uint64_t)(total_overall_err[i] * err_weight); - if (w < best_err) - { - best_err = w; - best_index = i; - if (!best_err) - break; - } - } // i - } - else - { - // Scan the UASTC results, and consider all results within a window that has the best UASTC+BC7 error. - for (uint32_t i = 0; i < total_results; i++) - { - double err_delta = uastc_err_f[i] / best_uastc_err_f; - - if (err_delta <= UASTC_ERROR_THRESH) - { - // TODO: This is a quick hack to favor modes 0 or 10 for better RDO compression. - const float err_weight = (flags & cPackUASTCFavorSimplerModes) ? get_uastc_mode_weight(results[i].m_uastc_mode) : 1.0f; - - const uint64_t w = (uint64_t)(total_overall_err[i] * err_weight); - if (w < best_err) - { - best_err = w; - best_index = i; - if (!best_err) - break; - } - } - } // i - } - } - } - - const uastc_encode_results& best_results = results[best_index]; - const uint32_t best_mode = best_results.m_uastc_mode; - const astc_block_desc& best_astc_results = best_results.m_astc; - - color_rgba decoded_uastc_block[4][4]; - bool success = unpack_uastc(best_mode, best_results.m_common_pattern, best_results.m_solid_color.get_color32(), best_astc_results, (basist::color32 *)&decoded_uastc_block[0][0], false); - (void)success; - VALIDATE(success); - -#if BASISU_VALIDATE_UASTC_ENC - // Make sure that the UASTC block unpacks to the same exact pixels as the ASTC block does, using two different decoders. - { - // Round trip to packed UASTC and back, then decode to pixels. - etc_block etc1_blk; - memset(&etc1_blk, 0, sizeof(etc1_blk)); - eac_a8_block etc_eac_a8_blk; - memset(&etc_eac_a8_blk, 0, sizeof(etc_eac_a8_blk)); - etc_eac_a8_blk.m_multiplier = 1; - - basist::uastc_block temp_block; - pack_uastc(temp_block, best_results, etc1_blk, 0, etc_eac_a8_blk, false, false); - - basist::color32 temp_block_unpacked[4][4]; - success = basist::unpack_uastc(temp_block, (basist::color32 *)temp_block_unpacked, false); - VALIDATE(success); - -#if BASISU_USE_ASTC_DECOMPRESS - // Now round trip to packed ASTC and back, then decode to pixels. - uint32_t astc_data[4]; - - if (best_results.m_uastc_mode == UASTC_MODE_INDEX_SOLID_COLOR) - pack_astc_solid_block(astc_data, (color32 &)best_results.m_solid_color); - else - { - success = pack_astc_block(astc_data, &best_astc_results, best_results.m_uastc_mode); - VALIDATE(success); - } - - color_rgba decoded_astc_block[4][4]; - success = basisu_astc::astc::decompress((uint8_t*)decoded_astc_block, (uint8_t*)&astc_data, false, 4, 4); - VALIDATE(success); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - VALIDATE(decoded_astc_block[y][x] == decoded_uastc_block[y][x]); - - VALIDATE(temp_block_unpacked[y][x].c[0] == decoded_uastc_block[y][x].r); - VALIDATE(temp_block_unpacked[y][x].c[1] == decoded_uastc_block[y][x].g); - VALIDATE(temp_block_unpacked[y][x].c[2] == decoded_uastc_block[y][x].b); - VALIDATE(temp_block_unpacked[y][x].c[3] == decoded_uastc_block[y][x].a); - } - } -#endif - } -#endif - - // Compute BC1 hints - bool bc1_hint0 = false, bc1_hint1 = false; - if (bc1_hints) - compute_bc1_hints(bc1_hint0, bc1_hint1, best_results, block, decoded_uastc_block); - - eac_a8_block eac_a8_blk; - if ((g_uastc_mode_has_alpha[best_mode]) && (best_mode != UASTC_MODE_INDEX_SOLID_COLOR)) - { - // Compute ETC2 hints - uint8_t decoded_uastc_block_alpha[16]; - for (uint32_t i = 0; i < 16; i++) - decoded_uastc_block_alpha[i] = decoded_uastc_block[i >> 2][i & 3].a; - - uastc_pack_eac_a8_results eac8_a8_results; - memset(&eac8_a8_results, 0, sizeof(eac8_a8_results)); - uastc_pack_eac_a8(eac8_a8_results, decoded_uastc_block_alpha, 16, 0, eac_a8_mul_search_rad, eac_a8_table_mask); - - // All we care about for hinting is the table and multiplier. - eac_a8_blk.m_table = eac8_a8_results.m_table; - eac_a8_blk.m_multiplier = eac8_a8_results.m_multiplier; - } - else - { - memset(&eac_a8_blk, 0, sizeof(eac_a8_blk)); - } - - // Compute ETC1 hints - etc_block etc1_blk; - uint32_t etc1_bias = 0; - compute_etc1_hints(etc1_blk, etc1_bias, best_results, block, decoded_uastc_block, level, flags); - - // Finally, pack the UASTC block with its hints and we're done. - pack_uastc(output_block, best_results, etc1_blk, etc1_bias, eac_a8_blk, bc1_hint0, bc1_hint1); - -// printf(" Packed: "); -// for (int i = 0; i < 16; i++) -// printf("%X ", output_block.m_bytes[i]); -// printf("\n"); - } - - static bool uastc_recompute_hints(basist::uastc_block* pBlock, const color_rgba* pBlock_pixels, uint32_t flags, const unpacked_uastc_block *pUnpacked_blk) - { - unpacked_uastc_block unpacked_blk; - - if (pUnpacked_blk) - unpacked_blk = *pUnpacked_blk; - else - { - if (!unpack_uastc(*pBlock, unpacked_blk, false, true)) - return false; - } - color_rgba decoded_uastc_block[4][4]; - if (!unpack_uastc(unpacked_blk, (basist::color32 *)decoded_uastc_block, false)) - return false; - uastc_encode_results results; - results.m_uastc_mode = unpacked_blk.m_mode; - results.m_common_pattern = unpacked_blk.m_common_pattern; - results.m_astc = unpacked_blk.m_astc; - results.m_solid_color = unpacked_blk.m_solid_color; - results.m_astc_err = 0; - bool bc1_hints = true; - uint32_t eac_a8_mul_search_rad = 3; - uint32_t eac_a8_table_mask = UINT32_MAX; - const uint32_t level = flags & cPackUASTCLevelMask; - switch (level) - { - case cPackUASTCLevelFastest: - { - eac_a8_mul_search_rad = 0; - eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); - bc1_hints = false; - break; - } - case cPackUASTCLevelFaster: - { - eac_a8_mul_search_rad = 0; - eac_a8_table_mask = (1 << 2) | (1 << 8) | (1 << 11) | (1 << 13); - break; - } - case cPackUASTCLevelDefault: - { - eac_a8_mul_search_rad = 1; - eac_a8_table_mask = (1 << 0) | (1 << 2) | (1 << 6) | (1 << 7) | (1 << 8) | (1 << 10) | (1 << 11) | (1 << 13); - break; - } - case cPackUASTCLevelSlower: - { - eac_a8_mul_search_rad = 2; - break; - } - case cPackUASTCLevelVerySlow: - { - break; - } - } - bool bc1_hint0 = false, bc1_hint1 = false; - if (bc1_hints) - compute_bc1_hints(bc1_hint0, bc1_hint1, results, (color_rgba (*)[4])pBlock_pixels, decoded_uastc_block); - const uint32_t best_mode = unpacked_blk.m_mode; - eac_a8_block eac_a8_blk; - if ((g_uastc_mode_has_alpha[best_mode]) && (best_mode != UASTC_MODE_INDEX_SOLID_COLOR)) - { - uint8_t decoded_uastc_block_alpha[16]; - for (uint32_t i = 0; i < 16; i++) - decoded_uastc_block_alpha[i] = decoded_uastc_block[i >> 2][i & 3].a; - uastc_pack_eac_a8_results eac8_a8_results; - memset(&eac8_a8_results, 0, sizeof(eac8_a8_results)); - uastc_pack_eac_a8(eac8_a8_results, decoded_uastc_block_alpha, 16, 0, eac_a8_mul_search_rad, eac_a8_table_mask); - eac_a8_blk.m_table = eac8_a8_results.m_table; - eac_a8_blk.m_multiplier = eac8_a8_results.m_multiplier; - } - else - { - memset(&eac_a8_blk, 0, sizeof(eac_a8_blk)); - } - etc_block etc1_blk; - uint32_t etc1_bias = 0; - compute_etc1_hints(etc1_blk, etc1_bias, results, (color_rgba (*)[4])pBlock_pixels, decoded_uastc_block, level, flags); - pack_uastc(*pBlock, results, etc1_blk, etc1_bias, eac_a8_blk, bc1_hint0, bc1_hint1); - return true; - } - - static const uint8_t g_uastc_mode_selector_bits[TOTAL_UASTC_MODES][2] = - { - { 65, 63 }, { 69, 31 }, { 73, 46 }, { 89, 29 }, - { 89, 30 }, { 68, 47 }, { 66, 62 }, { 89, 30 }, - { 0, 0 }, { 97, 30 }, { 65, 63 }, { 66, 62 }, - { 81, 47 }, { 94, 30 }, { 92, 31 }, { 62, 63 }, - { 98, 30 }, { 61, 62 }, { 49, 79 } - }; - - static inline uint32_t set_block_bits(uint8_t* pBytes, uint64_t val, uint32_t num_bits, uint32_t cur_ofs) - { - assert(num_bits <= 64); - assert((num_bits == 64) || (val < (1ULL << num_bits))); - uint64_t mask = (num_bits == 64) ? UINT64_MAX : ((1ULL << num_bits) - 1); - while (num_bits) - { - const uint32_t n = basisu::minimum(8U - (cur_ofs & 7U), num_bits); - pBytes[cur_ofs >> 3] &= ~static_cast(mask << (cur_ofs & 7U)); - pBytes[cur_ofs >> 3] |= static_cast(val << (cur_ofs & 7U)); - val >>= n; - mask >>= n; - num_bits -= n; - cur_ofs += n; - } - return cur_ofs; - } - - static const uint8_t g_tdefl_small_dist_extra[512] = - { - 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, - 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, - 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 7, 7, 7, 7, 7 - }; - - static const uint8_t g_tdefl_large_dist_extra[128] = - { - 0, 0, 8, 8, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, - 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, - 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13 - }; - - static inline uint32_t compute_match_cost_estimate(uint32_t dist) - { - uint32_t len_cost = 7; - uint32_t dist_cost = 5; - if (dist < 512) - dist_cost += g_tdefl_small_dist_extra[dist & 511]; - else - { - dist_cost += g_tdefl_large_dist_extra[basisu::minimum(dist, 32767) >> 8]; - while (dist >= 32768) - { - dist_cost++; - dist >>= 1; - } - } - return len_cost + dist_cost; - } - - struct selector_bitsequence - { - uint64_t m_sel; - uint32_t m_ofs; - selector_bitsequence() { } - selector_bitsequence(uint32_t bit_ofs, uint64_t sel) : m_sel(sel), m_ofs(bit_ofs) { } - bool operator== (const selector_bitsequence& other) const - { - return (m_ofs == other.m_ofs) && (m_sel == other.m_sel); - } - - bool operator< (const selector_bitsequence& other) const - { - if (m_ofs < other.m_ofs) - return true; - else if (m_ofs == other.m_ofs) - return m_sel < other.m_sel; - - return false; - } - }; - - struct selector_bitsequence_hash - { - std::size_t operator()(selector_bitsequence const& s) const noexcept - { - return static_cast(hash_hsieh((uint8_t *)&s, sizeof(s)) ^ s.m_sel); - } - }; - - class tracked_stat - { - public: - tracked_stat() { clear(); } - - void clear() { m_num = 0; m_total = 0; m_total2 = 0; } - - void update(uint32_t val) { m_num++; m_total += val; m_total2 += val * val; } - - tracked_stat& operator += (uint32_t val) { update(val); return *this; } - - uint32_t get_number_of_values() { return m_num; } - uint64_t get_total() const { return m_total; } - uint64_t get_total2() const { return m_total2; } - - float get_average() const { return m_num ? (float)m_total / m_num : 0.0f; }; - float get_std_dev() const { return m_num ? sqrtf((float)(m_num * m_total2 - m_total * m_total)) / m_num : 0.0f; } - float get_variance() const { float s = get_std_dev(); return s * s; } - - private: - uint32_t m_num; - uint64_t m_total; - uint64_t m_total2; - }; - - static bool uastc_rdo_blocks(uint32_t first_index, uint32_t last_index, basist::uastc_block* pBlocks, const color_rgba* pBlock_pixels, const uastc_rdo_params& params, uint32_t flags, - uint32_t &total_skipped, uint32_t &total_refined, uint32_t &total_modified, uint32_t &total_smooth) - { - debug_printf("uastc_rdo_blocks: Processing blocks %u to %u\n", first_index, last_index); - - const int total_blocks_to_check = basisu::maximum(1U, params.m_lz_dict_size / sizeof(basist::uastc_block)); - const bool perceptual = false; - - std::unordered_map selector_history; - - for (uint32_t block_index = first_index; block_index < last_index; block_index++) - { - const basist::uastc_block& blk = pBlocks[block_index]; - const color_rgba* pPixels = &pBlock_pixels[16 * block_index]; - - unpacked_uastc_block unpacked_blk; - if (!unpack_uastc(blk, unpacked_blk, false, true)) - return false; - - const uint32_t block_mode = unpacked_blk.m_mode; - if (block_mode == UASTC_MODE_INDEX_SOLID_COLOR) - continue; - - tracked_stat r_stats, g_stats, b_stats, a_stats; - - for (uint32_t i = 0; i < 16; i++) - { - r_stats.update(pPixels[i].r); - g_stats.update(pPixels[i].g); - b_stats.update(pPixels[i].b); - a_stats.update(pPixels[i].a); - } - - const float max_std_dev = basisu::maximum(basisu::maximum(basisu::maximum(r_stats.get_std_dev(), g_stats.get_std_dev()), b_stats.get_std_dev()), a_stats.get_std_dev()); - - float yl = clamp(max_std_dev / params.m_max_smooth_block_std_dev, 0.0f, 1.0f); - yl = yl * yl; - const float smooth_block_error_scale = lerp(params.m_smooth_block_max_error_scale, 1.0f, yl); - if (smooth_block_error_scale > 1.0f) - total_smooth++; - - color_rgba decoded_uastc_block[4][4]; - if (!unpack_uastc(unpacked_blk, (basist::color32*)decoded_uastc_block, false)) - return false; - - uint64_t uastc_err = 0; - for (uint32_t i = 0; i < 16; i++) - uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_uastc_block)[i], true); - - // Transcode to BC7 - bc7_optimization_results b7_results; - if (!transcode_uastc_to_bc7(unpacked_blk, b7_results)) - return false; - - basist::bc7_block b7_block; - basist::encode_bc7_block(&b7_block, &b7_results); - - color_rgba decoded_b7_blk[4][4]; - unpack_block(texture_format::cBC7, &b7_block, &decoded_b7_blk[0][0]); - - uint64_t bc7_err = 0; - for (uint32_t i = 0; i < 16; i++) - bc7_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_b7_blk)[i], true); - - uint64_t cur_err = (uastc_err + bc7_err) / 2; - - // Divide by 16*4 to compute RMS error - const float cur_ms_err = (float)cur_err * (1.0f / 64.0f); - const float cur_rms_err = sqrt(cur_ms_err); - - const uint32_t first_sel_bit = g_uastc_mode_selector_bits[block_mode][0]; - const uint32_t total_sel_bits = g_uastc_mode_selector_bits[block_mode][1]; - assert(first_sel_bit + total_sel_bits <= 128); - assert(total_sel_bits > 0); - - uint32_t cur_bit_offset = first_sel_bit; - uint64_t cur_sel_bits = read_bits((const uint8_t*)&blk, cur_bit_offset, basisu::minimum(64U, total_sel_bits)); - - if (cur_rms_err >= params.m_skip_block_rms_thresh) - { - auto cur_search_res = selector_history.insert(std::make_pair(selector_bitsequence(first_sel_bit, cur_sel_bits), block_index)); - - // Block already has too much error, so don't mess with it. - if (!cur_search_res.second) - (*cur_search_res.first).second = block_index; - - total_skipped++; - continue; - } - - int cur_bits; - auto cur_find_res = selector_history.find(selector_bitsequence(first_sel_bit, cur_sel_bits)); - if (cur_find_res == selector_history.end()) - { - // Wasn't found - wildly estimate literal cost - //cur_bits = (total_sel_bits * 5) / 4; - cur_bits = (total_sel_bits * params.m_lz_literal_cost) / 100; - } - else - { - // Was found - wildly estimate match cost - uint32_t match_block_index = cur_find_res->second; - const int block_dist_in_bytes = (block_index - match_block_index) * 16; - cur_bits = compute_match_cost_estimate(block_dist_in_bytes); - } - - int first_block_to_check = basisu::maximum(first_index, block_index - total_blocks_to_check); - int last_block_to_check = block_index - 1; - - basist::uastc_block best_block(blk); - uint32_t best_block_index = block_index; - - float best_t = cur_ms_err * smooth_block_error_scale + cur_bits * params.m_lambda; - - // Now scan through previous blocks, insert their selector bit patterns into the current block, and find - // selector bit patterns which don't increase the overall block error too much. - for (int prev_block_index = last_block_to_check; prev_block_index >= first_block_to_check; --prev_block_index) - { - const basist::uastc_block& prev_blk = pBlocks[prev_block_index]; - - uint32_t bit_offset = first_sel_bit; - uint64_t sel_bits = read_bits((const uint8_t*)&prev_blk, bit_offset, basisu::minimum(64U, total_sel_bits)); - - int match_block_index = prev_block_index; - auto res = selector_history.find(selector_bitsequence(first_sel_bit, sel_bits)); - if (res != selector_history.end()) - match_block_index = res->second; - // Have we already checked this bit pattern? If so then skip this block. - if (match_block_index > prev_block_index) - continue; - - unpacked_uastc_block unpacked_prev_blk; - if (!unpack_uastc(prev_blk, unpacked_prev_blk, false, true)) - return false; - - basist::uastc_block trial_blk(blk); - - set_block_bits((uint8_t*)&trial_blk, sel_bits, basisu::minimum(64U, total_sel_bits), first_sel_bit); - - if (total_sel_bits > 64) - { - sel_bits = read_bits((const uint8_t*)&prev_blk, bit_offset, total_sel_bits - 64U); - - set_block_bits((uint8_t*)&trial_blk, sel_bits, total_sel_bits - 64U, first_sel_bit + basisu::minimum(64U, total_sel_bits)); - } - - unpacked_uastc_block unpacked_trial_blk; - if (!unpack_uastc(trial_blk, unpacked_trial_blk, false, true)) - continue; - - color_rgba decoded_trial_uastc_block[4][4]; - if (!unpack_uastc(unpacked_trial_blk, (basist::color32*)decoded_trial_uastc_block, false)) - continue; - - uint64_t trial_uastc_err = 0; - for (uint32_t i = 0; i < 16; i++) - trial_uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_trial_uastc_block)[i], true); - - // Transcode trial to BC7, compute error - bc7_optimization_results trial_b7_results; - if (!transcode_uastc_to_bc7(unpacked_trial_blk, trial_b7_results)) - return false; - - basist::bc7_block trial_b7_block; - basist::encode_bc7_block(&trial_b7_block, &trial_b7_results); - - color_rgba decoded_trial_b7_blk[4][4]; - unpack_block(texture_format::cBC7, &trial_b7_block, &decoded_trial_b7_blk[0][0]); - - uint64_t trial_bc7_err = 0; - for (uint32_t i = 0; i < 16; i++) - trial_bc7_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_trial_b7_blk)[i], true); - - uint64_t trial_err = (trial_uastc_err + trial_bc7_err) / 2; - - const float trial_ms_err = (float)trial_err * (1.0f / 64.0f); - const float trial_rms_err = sqrtf(trial_ms_err); - - if (trial_rms_err > cur_rms_err * params.m_max_allowed_rms_increase_ratio) - continue; - - const int block_dist_in_bytes = (block_index - match_block_index) * 16; - const int match_bits = compute_match_cost_estimate(block_dist_in_bytes); - - float t = trial_ms_err * smooth_block_error_scale + match_bits * params.m_lambda; - if (t < best_t) - { - best_t = t; - best_block_index = prev_block_index; - - best_block = trial_blk; - } - - } // prev_block_index - - if (best_block_index != block_index) - { - total_modified++; - - unpacked_uastc_block unpacked_best_blk; - if (!unpack_uastc(best_block, unpacked_best_blk, false, false)) - return false; - - if ((params.m_endpoint_refinement) && (block_mode == 0)) - { - // Attempt to refine mode 0 block's endpoints, using the new selectors. This doesn't help much, but it does help. - // TODO: We could do this with the other modes too. - color_rgba decoded_best_uastc_block[4][4]; - if (!unpack_uastc(unpacked_best_blk, (basist::color32*)decoded_best_uastc_block, false)) - return false; - - // Compute the block's current error (with the modified selectors). - uint64_t best_uastc_err = 0; - for (uint32_t i = 0; i < 16; i++) - best_uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_best_uastc_block)[i], true); - - bc7enc_compress_block_params comp_params; - memset(&comp_params, 0, sizeof(comp_params)); - comp_params.m_max_partitions_mode1 = 64; - comp_params.m_least_squares_passes = 1; - comp_params.m_weights[0] = 1; - comp_params.m_weights[1] = 1; - comp_params.m_weights[2] = 1; - comp_params.m_weights[3] = 1; - comp_params.m_uber_level = 0; - - uastc_encode_results results; - uint32_t total_results = 0; - astc_mode0_or_18(0, (color_rgba(*)[4])pPixels, &results, total_results, comp_params, unpacked_best_blk.m_astc.m_weights); - assert(total_results == 1); - - // See if the overall error has actually gone done. - - color_rgba decoded_trial_uastc_block[4][4]; - bool success = unpack_uastc(results.m_uastc_mode, results.m_common_pattern, results.m_solid_color.get_color32(), results.m_astc, (basist::color32*) & decoded_trial_uastc_block[0][0], false); - assert(success); - - BASISU_NOTE_UNUSED(success); - - uint64_t trial_uastc_err = 0; - for (uint32_t i = 0; i < 16; i++) - trial_uastc_err += color_distance(perceptual, pPixels[i], ((color_rgba*)decoded_trial_uastc_block)[i], true); - - if (trial_uastc_err < best_uastc_err) - { - // The error went down, so accept the new endpoints. - - // Ensure the selectors haven't changed, otherwise we'll invalidate the LZ matches. - for (uint32_t i = 0; i < 16; i++) - assert(unpacked_best_blk.m_astc.m_weights[i] == results.m_astc.m_weights[i]); - - unpacked_best_blk.m_astc = results.m_astc; - - total_refined++; - } - } // if ((params.m_endpoint_refinement) && (block_mode == 0)) - - // The selectors have changed, so go recompute the block hints. - if (!uastc_recompute_hints(&best_block, pPixels, flags, &unpacked_best_blk)) - return false; - - // Write the modified block - pBlocks[block_index] = best_block; - - } // if (best_block_index != block_index) - - { - uint32_t bit_offset = first_sel_bit; - uint64_t sel_bits = read_bits((const uint8_t*)&best_block, bit_offset, basisu::minimum(64U, total_sel_bits)); - - auto res = selector_history.insert(std::make_pair(selector_bitsequence(first_sel_bit, sel_bits), block_index)); - if (!res.second) - (*res.first).second = block_index; - } - - } // block_index - - return true; - } - - // This function implements a basic form of rate distortion optimization (RDO) for UASTC. - // It only changes selectors and then updates the hints. It uses very approximate LZ bitprice estimation. - // There's A LOT that can be done better in here, but it's a start. - // One nice advantage of the method used here is that it works for any input, no matter which or how many modes it uses. - bool uastc_rdo(uint32_t num_blocks, basist::uastc_block* pBlocks, const color_rgba* pBlock_pixels, const uastc_rdo_params& params, uint32_t flags, job_pool* pJob_pool, uint32_t total_jobs) - { - assert(params.m_max_allowed_rms_increase_ratio > 1.0f); - assert(params.m_lz_dict_size > 0); - assert(params.m_lambda > 0.0f); - - uint32_t total_skipped = 0, total_modified = 0, total_refined = 0, total_smooth = 0; - - uint32_t blocks_per_job = total_jobs ? (num_blocks / total_jobs) : 0; - - std::mutex stat_mutex; - - bool status = false; - - if ((!pJob_pool) || (total_jobs <= 1) || (blocks_per_job <= 8)) - { - status = uastc_rdo_blocks(0, num_blocks, pBlocks, pBlock_pixels, params, flags, total_skipped, total_refined, total_modified, total_smooth); - } - else - { - bool all_succeeded = true; - - for (uint32_t block_index_iter = 0; block_index_iter < num_blocks; block_index_iter += blocks_per_job) - { - const uint32_t first_index = block_index_iter; - const uint32_t last_index = minimum(num_blocks, block_index_iter + blocks_per_job); - -#ifndef __EMSCRIPTEN__ - pJob_pool->add_job([first_index, last_index, pBlocks, pBlock_pixels, ¶ms, flags, &total_skipped, &total_modified, &total_refined, &total_smooth, &all_succeeded, &stat_mutex] { -#endif - - uint32_t job_skipped = 0, job_modified = 0, job_refined = 0, job_smooth = 0; - - bool status = uastc_rdo_blocks(first_index, last_index, pBlocks, pBlock_pixels, params, flags, job_skipped, job_refined, job_modified, job_smooth); - - { - std::lock_guard lck(stat_mutex); - - all_succeeded = all_succeeded && status; - total_skipped += job_skipped; - total_modified += job_modified; - total_refined += job_refined; - total_smooth += job_smooth; - } - -#ifndef __EMSCRIPTEN__ - } - ); -#endif - - } // block_index_iter - -#ifndef __EMSCRIPTEN__ - pJob_pool->wait_for_all(); -#endif - - status = all_succeeded; - } - - debug_printf("uastc_rdo: Total modified: %3.2f%%, total skipped: %3.2f%%, total refined: %3.2f%%, total smooth: %3.2f%%\n", total_modified * 100.0f / num_blocks, total_skipped * 100.0f / num_blocks, total_refined * 100.0f / num_blocks, total_smooth * 100.0f / num_blocks); - - return status; - } -} // namespace basisu - - - - - diff --git a/WickedEngine/Utility/basis_universal/encoder/basisu_uastc_enc.h b/WickedEngine/Utility/basis_universal/encoder/basisu_uastc_enc.h deleted file mode 100644 index ba39a558b..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/basisu_uastc_enc.h +++ /dev/null @@ -1,140 +0,0 @@ -// basisu_uastc_enc.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_etc.h" - -#include "../transcoder/basisu_transcoder_uastc.h" - -namespace basisu -{ - const uint32_t TOTAL_PACK_UASTC_LEVELS = 5; - - enum - { - // Fastest is the lowest quality, although it's stil substantially higher quality vs. BC1/ETC1. It supports 5 modes. - // The output may be somewhat blocky because this setting doesn't support 2/3-subset UASTC modes, but it should be less blocky vs. BC1/ETC1. - // This setting doesn't write BC1 hints, so BC1 transcoding will be slower. - // Transcoded ETC1 quality will be lower because it only considers 2 hints out of 32. - // Avg. 43.45 dB - cPackUASTCLevelFastest = 0, - - // Faster is ~3x slower than fastest. It supports 9 modes. - // Avg. 46.49 dB - cPackUASTCLevelFaster = 1, - - // Default is ~5.5x slower than fastest. It supports 14 modes. - // Avg. 47.47 dB - cPackUASTCLevelDefault = 2, - - // Slower is ~14.5x slower than fastest. It supports all 18 modes. - // Avg. 48.01 dB - cPackUASTCLevelSlower = 3, - - // VerySlow is ~200x slower than fastest. - // The best quality the codec is capable of, but you'll need to be patient or have a lot of cores. - // Avg. 48.24 dB - cPackUASTCLevelVerySlow = 4, - - cPackUASTCLevelMask = 0xF, - - // By default the encoder tries to strike a balance between UASTC and transcoded BC7 quality. - // These flags allow you to favor only optimizing for lowest UASTC error, or lowest BC7 error. - cPackUASTCFavorUASTCError = 8, - cPackUASTCFavorBC7Error = 16, - - cPackUASTCETC1FasterHints = 64, - cPackUASTCETC1FastestHints = 128, - cPackUASTCETC1DisableFlipAndIndividual = 256, - - // Favor UASTC modes 0 and 10 more than the others (this is experimental, it's useful for RDO compression) - cPackUASTCFavorSimplerModes = 512, - }; - - // pRGBAPixels: Pointer to source 4x4 block of RGBA pixels (R first in memory). - // block: Reference to destination UASTC block. - // level: Controls compression speed vs. performance tradeoff. - void encode_uastc(const uint8_t* pRGBAPixels, basist::uastc_block& output_block, uint32_t flags = cPackUASTCLevelDefault); - - struct uastc_encode_results - { - uint32_t m_uastc_mode; - uint32_t m_common_pattern; - basist::astc_block_desc m_astc; - color_rgba m_solid_color; - uint64_t m_astc_err; - }; - - void pack_uastc(basist::uastc_block& blk, const uastc_encode_results& result, const etc_block& etc1_blk, uint32_t etc1_bias, const eac_a8_block& etc_eac_a8_blk, bool bc1_hint0, bool bc1_hint1); - - const uint32_t UASCT_RDO_DEFAULT_LZ_DICT_SIZE = 4096; - - const float UASTC_RDO_DEFAULT_MAX_ALLOWED_RMS_INCREASE_RATIO = 10.0f; - const float UASTC_RDO_DEFAULT_SKIP_BLOCK_RMS_THRESH = 8.0f; - - // The RDO encoder computes a smoothness factor, from [0,1], for each block. To do this it computes each block's maximum component variance, then it divides this by this factor and clamps the result. - // Larger values will result in more blocks being protected from too much distortion. - const float UASTC_RDO_DEFAULT_MAX_SMOOTH_BLOCK_STD_DEV = 18.0f; - - // The RDO encoder can artifically boost the error of smooth blocks, in order to suppress distortions on smooth areas of the texture. - // The encoder will use this value as the maximum error scale to use on smooth blocks. The larger this value, the better smooth bocks will look. Set to 1.0 to disable this completely. - const float UASTC_RDO_DEFAULT_SMOOTH_BLOCK_MAX_ERROR_SCALE = 10.0f; - - struct uastc_rdo_params - { - uastc_rdo_params() - { - clear(); - } - - void clear() - { - m_lz_dict_size = UASCT_RDO_DEFAULT_LZ_DICT_SIZE; - m_lambda = 0.5f; - m_max_allowed_rms_increase_ratio = UASTC_RDO_DEFAULT_MAX_ALLOWED_RMS_INCREASE_RATIO; - m_skip_block_rms_thresh = UASTC_RDO_DEFAULT_SKIP_BLOCK_RMS_THRESH; - m_endpoint_refinement = true; - m_lz_literal_cost = 100; - - m_max_smooth_block_std_dev = UASTC_RDO_DEFAULT_MAX_SMOOTH_BLOCK_STD_DEV; - m_smooth_block_max_error_scale = UASTC_RDO_DEFAULT_SMOOTH_BLOCK_MAX_ERROR_SCALE; - } - - // m_lz_dict_size: Size of LZ dictionary to simulate in bytes. The larger this value, the slower the encoder but the higher the quality per LZ compressed bit. - uint32_t m_lz_dict_size; - - // m_lambda: The post-processor tries to reduce distortion+rate*lambda (rate is approximate LZ bits and distortion is scaled MS error). - // Larger values push the postprocessor towards optimizing more for lower rate, and smaller values more for distortion. 0=minimal distortion. - float m_lambda; - - // m_max_allowed_rms_increase_ratio: How much the RMS error of a block is allowed to increase before a trial is rejected. 1.0=no increase allowed, 1.05=5% increase allowed, etc. - float m_max_allowed_rms_increase_ratio; - - // m_skip_block_rms_thresh: Blocks with this much RMS error or more are completely skipped by the RDO encoder. - float m_skip_block_rms_thresh; - - // m_endpoint_refinement: If true, the post-process will attempt to refine the endpoints of blocks with modified selectors. - bool m_endpoint_refinement; - - float m_max_smooth_block_std_dev; - float m_smooth_block_max_error_scale; - - uint32_t m_lz_literal_cost; - }; - - // num_blocks, pBlocks: Number of blocks and pointer to UASTC blocks to process. - // pBlock_pixels: Pointer to an array of 4x4 blocks containing the original texture pixels. This is NOT a raster image, but a pointer to individual 4x4 blocks. - // flags: Pass in the same flags used to encode the UASTC blocks. The flags are used to reencode the transcode hints in the same way. - bool uastc_rdo(uint32_t num_blocks, basist::uastc_block* pBlocks, const color_rgba* pBlock_pixels, const uastc_rdo_params ¶ms, uint32_t flags = cPackUASTCLevelDefault, job_pool* pJob_pool = nullptr, uint32_t total_jobs = 0); -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/encoder/cppspmd_flow.h b/WickedEngine/Utility/basis_universal/encoder/cppspmd_flow.h deleted file mode 100644 index f6930476a..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/cppspmd_flow.h +++ /dev/null @@ -1,590 +0,0 @@ -// Do not include this header directly. -// Control flow functionality in common between all the headers. -// -// Copyright 2020-2021 Binomial LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifdef _DEBUG -CPPSPMD_FORCE_INLINE void spmd_kernel::check_masks() -{ - assert(!any(andnot(m_kernel_exec, m_exec))); -} -#endif - -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_break() -{ -#ifdef _DEBUG - assert(m_in_loop); -#endif - - m_exec = exec_mask::all_off(); -} - -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_continue() -{ -#ifdef _DEBUG - assert(m_in_loop); -#endif - - // Kill any active lanes, and remember which lanes were active so we can re-enable them at the end of the loop body. - m_continue_mask = m_continue_mask | m_exec; - m_exec = exec_mask::all_off(); -} - -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_return() -{ - // Permenantly kill all active lanes - m_kernel_exec = andnot(m_exec, m_kernel_exec); - m_exec = exec_mask::all_off(); -} - -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_unmasked(const UnmaskedBody& unmaskedBody) -{ - exec_mask orig_exec = m_exec, orig_kernel_exec = m_kernel_exec; - - m_kernel_exec = exec_mask::all_on(); - m_exec = exec_mask::all_on(); - - unmaskedBody(); - - m_kernel_exec = m_kernel_exec & orig_kernel_exec; - m_exec = m_exec & orig_exec; - - check_masks(); -} - -struct scoped_unmasked_restorer -{ - spmd_kernel *m_pKernel; - exec_mask m_orig_exec, m_orig_kernel_exec; - - CPPSPMD_FORCE_INLINE scoped_unmasked_restorer(spmd_kernel *pKernel) : - m_pKernel(pKernel), - m_orig_exec(pKernel->m_exec), - m_orig_kernel_exec(pKernel->m_kernel_exec) - { - pKernel->m_kernel_exec = exec_mask::all_on(); - pKernel->m_exec = exec_mask::all_on(); - } - - CPPSPMD_FORCE_INLINE ~scoped_unmasked_restorer() - { - m_pKernel->m_kernel_exec = m_pKernel->m_kernel_exec & m_orig_kernel_exec; - m_pKernel->m_exec = m_pKernel->m_exec & m_orig_exec; - m_pKernel->check_masks(); - } -}; - -#define SPMD_UNMASKED_BEGIN { scoped_unmasked_restorer _unmasked_restorer(this); -#define SPMD_UNMASKED_END } - -#if 0 -template -CPPSPMD_FORCE_INLINE decltype(auto) spmd_kernel::spmd_call(Args&&... args) -{ - SPMDKernel kernel; - kernel.init(m_exec); - return kernel._call(std::forward(args)...); -} -#else -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_call(Args&&... args) -{ - SPMDKernel kernel; - kernel.init(m_exec); - kernel._call(std::forward(args)...); -} -#endif - -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_if_break(const vbool& cond) -{ -#ifdef _DEBUG - assert(m_in_loop); -#endif - - exec_mask cond_exec(cond); - - m_exec = andnot(m_exec & cond_exec, m_exec); - - check_masks(); -} - -// No SPMD breaks, continues, etc. allowed -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_sif(const vbool& cond, const IfBody& ifBody) -{ - exec_mask im = m_exec & exec_mask(cond); - - if (any(im)) - { - const exec_mask orig_exec = m_exec; - m_exec = im; - ifBody(); - m_exec = orig_exec; - } -} - -// No SPMD breaks, continues, etc. allowed -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_sifelse(const vbool& cond, const IfBody& ifBody, const ElseBody &elseBody) -{ - const exec_mask orig_exec = m_exec; - - exec_mask im = m_exec & exec_mask(cond); - - if (any(im)) - { - m_exec = im; - ifBody(); - } - - exec_mask em = orig_exec & exec_mask(!cond); - - if (any(em)) - { - m_exec = em; - elseBody(); - } - - m_exec = orig_exec; -} - -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_if(const vbool& cond, const IfBody& ifBody) -{ - exec_mask cond_exec(cond); - - exec_mask pre_if_exec = cond_exec & m_exec; - - if (any(pre_if_exec)) - { - exec_mask unexecuted_lanes = andnot(cond_exec, m_exec); - m_exec = pre_if_exec; - - ifBody(); - - // Propagate any lanes that got disabled inside the if body into the exec mask outside the if body, but turn on any lanes that didn't execute inside the if body. - m_exec = m_exec | unexecuted_lanes; - - check_masks(); - } -} - -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_ifelse(const vbool& cond, const IfBody& ifBody, const ElseBody& elseBody) -{ - bool all_flag = false; - - exec_mask cond_exec(cond); - - { - exec_mask pre_if_exec = cond_exec & m_exec; - - int mask = pre_if_exec.get_movemask(); - if (mask != 0) - { - all_flag = ((uint32_t)mask == m_exec.get_movemask()); - - exec_mask unexecuted_lanes = andnot(cond_exec, m_exec); - m_exec = pre_if_exec; - - ifBody(); - - // Propagate any lanes that got disabled inside the if body into the exec mask outside the if body, but turn on any lanes that didn't execute inside the if body. - m_exec = m_exec | unexecuted_lanes; - - check_masks(); - } - } - - if (!all_flag) - { - exec_mask pre_if_exec = andnot(cond_exec, m_exec); - - if (any(pre_if_exec)) - { - exec_mask unexecuted_lanes = cond_exec & m_exec; - m_exec = pre_if_exec; - - ifBody(); - - // Propagate any lanes that got disabled inside the if body into the exec mask outside the if body, but turn on any lanes that didn't execute inside the if body. - m_exec = m_exec | unexecuted_lanes; - - check_masks(); - } - } -} - -struct scoped_exec_restorer -{ - exec_mask *m_pMask; - exec_mask m_prev_mask; - CPPSPMD_FORCE_INLINE scoped_exec_restorer(exec_mask *pExec_mask) : m_pMask(pExec_mask), m_prev_mask(*pExec_mask) { } - CPPSPMD_FORCE_INLINE ~scoped_exec_restorer() { *m_pMask = m_prev_mask; } -}; - -// Cannot use SPMD break, continue, or return inside "simple" if/else -#define SPMD_SIF(cond) exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(m_exec & exec_mask(vbool(cond))); if (any(CPPSPMD_GLUER2(_exec_temp, __LINE__))) \ - { CPPSPMD::scoped_exec_restorer CPPSPMD_GLUER2(_exec_restore_, __LINE__)(&m_exec); m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); - -#define SPMD_SELSE(cond) } exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(m_exec & exec_mask(!vbool(cond))); if (any(CPPSPMD_GLUER2(_exec_temp, __LINE__))) \ - { CPPSPMD::scoped_exec_restorer CPPSPMD_GLUER2(_exec_restore_, __LINE__)(&m_exec); m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); - -#define SPMD_SENDIF } - -// Same as SPMD_SIF, except doesn't use a scoped object -#define SPMD_SIF2(cond) exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(m_exec & exec_mask(vbool(cond))); if (any(CPPSPMD_GLUER2(_exec_temp, __LINE__))) \ - { exec_mask _orig_exec = m_exec; m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); - -#define SPMD_SELSE2(cond) m_exec = _orig_exec; } exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(m_exec & exec_mask(!vbool(cond))); if (any(CPPSPMD_GLUER2(_exec_temp, __LINE__))) \ - { exec_mask _orig_exec = m_exec; m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); - -#define SPMD_SEND_IF2 m_exec = _orig_exec; } - -// Same as SPMD_SIF(), except the if/else blocks are always executed -#define SPMD_SAIF(cond) exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(m_exec & exec_mask(vbool(cond))); { CPPSPMD::scoped_exec_restorer CPPSPMD_GLUER2(_exec_restore_, __LINE__)(&m_exec); \ - m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); - -#define SPMD_SAELSE(cond) } exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(m_exec & exec_mask(!vbool(cond))); { CPPSPMD::scoped_exec_restorer CPPSPMD_GLUER2(_exec_restore_, __LINE__)(&m_exec); \ - m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); - -#define SPMD_SAENDIF } - -// Cannot use SPMD break, continue, or return inside sselect -#define SPMD_SSELECT(var) do { vint_t _select_var = var; scoped_exec_restorer _orig_exec(&m_exec); exec_mask _select_executed(exec_mask::all_off()); -#define SPMD_SCASE(value) exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(_orig_exec.m_prev_mask & exec_mask(vbool(_select_var == (value)))); if (any(CPPSPMD_GLUER2(_exec_temp, __LINE__))) \ - { m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); _select_executed = _select_executed | m_exec; - -//#define SPMD_SCASE_END if (_select_executed.get_movemask() == _orig_exec.m_prev_mask.get_movemask()) break; } -#define SPMD_SCASE_END if (!any(_select_executed ^ _orig_exec.m_prev_mask)) break; } -#define SPMD_SDEFAULT exec_mask _all_other_lanes(andnot(_select_executed, _orig_exec.m_prev_mask)); if (any(_all_other_lanes)) { m_exec = _all_other_lanes; -#define SPMD_SDEFAULT_END } -#define SPMD_SSELECT_END } while(0); - -// Same as SPMD_SSELECT, except all cases are executed. -// Cannot use SPMD break, continue, or return inside sselect -#define SPMD_SASELECT(var) do { vint_t _select_var = var; scoped_exec_restorer _orig_exec(&m_exec); exec_mask _select_executed(exec_mask::all_off()); - -#define SPMD_SACASE(value) exec_mask CPPSPMD_GLUER2(_exec_temp, __LINE__)(_orig_exec.m_prev_mask & exec_mask(vbool(_select_var == (value)))); { m_exec = CPPSPMD_GLUER2(_exec_temp, __LINE__); \ - _select_executed = _select_executed | m_exec; - -#define SPMD_SACASE_END } -#define SPMD_SADEFAULT exec_mask _all_other_lanes(andnot(_select_executed, _orig_exec.m_prev_mask)); { m_exec = _all_other_lanes; -#define SPMD_SADEFAULT_END } -#define SPMD_SASELECT_END } while(0); - -struct scoped_exec_restorer2 -{ - spmd_kernel *m_pKernel; - exec_mask m_unexecuted_lanes; - - CPPSPMD_FORCE_INLINE scoped_exec_restorer2(spmd_kernel *pKernel, const vbool &cond) : - m_pKernel(pKernel) - { - exec_mask cond_exec(cond); - m_unexecuted_lanes = andnot(cond_exec, pKernel->m_exec); - pKernel->m_exec = cond_exec & pKernel->m_exec; - } - - CPPSPMD_FORCE_INLINE ~scoped_exec_restorer2() - { - m_pKernel->m_exec = m_pKernel->m_exec | m_unexecuted_lanes; - m_pKernel->check_masks(); - } -}; - -#define SPMD_IF(cond) { CPPSPMD::scoped_exec_restorer2 CPPSPMD_GLUER2(_exec_restore2_, __LINE__)(this, vbool(cond)); if (any(m_exec)) { -#define SPMD_ELSE(cond) } } { CPPSPMD::scoped_exec_restorer2 CPPSPMD_GLUER2(_exec_restore2_, __LINE__)(this, !vbool(cond)); if (any(m_exec)) { -#define SPMD_END_IF } } - -// Same as SPMD_IF, except the conditional block is always executed. -#define SPMD_AIF(cond) { CPPSPMD::scoped_exec_restorer2 CPPSPMD_GLUER2(_exec_restore2_, __LINE__)(this, vbool(cond)); { -#define SPMD_AELSE(cond) } } { CPPSPMD::scoped_exec_restorer2 CPPSPMD_GLUER2(_exec_restore2_, __LINE__)(this, !vbool(cond)); { -#define SPMD_AEND_IF } } - -class scoped_exec_saver -{ - exec_mask m_exec, m_kernel_exec, m_continue_mask; - spmd_kernel *m_pKernel; -#ifdef _DEBUG - bool m_in_loop; -#endif - -public: - inline scoped_exec_saver(spmd_kernel *pKernel) : - m_exec(pKernel->m_exec), m_kernel_exec(pKernel->m_kernel_exec), m_continue_mask(pKernel->m_continue_mask), - m_pKernel(pKernel) - { -#ifdef _DEBUG - m_in_loop = pKernel->m_in_loop; -#endif - } - - inline ~scoped_exec_saver() - { - m_pKernel->m_exec = m_exec; - m_pKernel->m_continue_mask = m_continue_mask; - m_pKernel->m_kernel_exec = m_kernel_exec; -#ifdef _DEBUG - m_pKernel->m_in_loop = m_in_loop; - m_pKernel->check_masks(); -#endif - } -}; - -#define SPMD_BEGIN_CALL scoped_exec_saver CPPSPMD_GLUER2(_begin_call_scoped_exec_saver, __LINE__)(this); m_continue_mask = exec_mask::all_off(); -#define SPMD_BEGIN_CALL_ALL_LANES scoped_exec_saver CPPSPMD_GLUER2(_begin_call_scoped_exec_saver, __LINE__)(this); m_exec = exec_mask::all_on(); m_continue_mask = exec_mask::all_off(); - -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_foreach(int begin, int end, const ForeachBody& foreachBody) -{ - if (begin == end) - return; - - if (!any(m_exec)) - return; - - // We don't support iterating backwards. - if (begin > end) - std::swap(begin, end); - - exec_mask prev_continue_mask = m_continue_mask, prev_exec = m_exec; - - int total_full = (end - begin) / PROGRAM_COUNT; - int total_partial = (end - begin) % PROGRAM_COUNT; - - lint_t loop_index = begin + program_index; - - const int total_loops = total_full + (total_partial ? 1 : 0); - - m_continue_mask = exec_mask::all_off(); - - for (int i = 0; i < total_loops; i++) - { - int n = PROGRAM_COUNT; - if ((i == (total_loops - 1)) && (total_partial)) - { - exec_mask partial_mask = exec_mask(vint_t(total_partial) > vint_t(program_index)); - m_exec = m_exec & partial_mask; - n = total_partial; - } - - foreachBody(loop_index, n); - - m_exec = m_exec | m_continue_mask; - if (!any(m_exec)) - break; - - m_continue_mask = exec_mask::all_off(); - check_masks(); - - store_all(loop_index, loop_index + PROGRAM_COUNT); - } - - m_exec = prev_exec & m_kernel_exec; - m_continue_mask = prev_continue_mask; - check_masks(); -} - -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_while(const WhileCondBody& whileCondBody, const WhileBody& whileBody) -{ - exec_mask orig_exec = m_exec; - - exec_mask orig_continue_mask = m_continue_mask; - m_continue_mask = exec_mask::all_off(); - -#ifdef _DEBUG - const bool prev_in_loop = m_in_loop; - m_in_loop = true; -#endif - - while(true) - { - exec_mask cond_exec = exec_mask(whileCondBody()); - m_exec = m_exec & cond_exec; - - if (!any(m_exec)) - break; - - whileBody(); - - m_exec = m_exec | m_continue_mask; - m_continue_mask = exec_mask::all_off(); - check_masks(); - } - -#ifdef _DEBUG - m_in_loop = prev_in_loop; -#endif - - m_exec = orig_exec & m_kernel_exec; - m_continue_mask = orig_continue_mask; - check_masks(); -} - -struct scoped_while_restorer -{ - spmd_kernel *m_pKernel; - exec_mask m_orig_exec, m_orig_continue_mask; -#ifdef _DEBUG - bool m_prev_in_loop; -#endif - - CPPSPMD_FORCE_INLINE scoped_while_restorer(spmd_kernel *pKernel) : - m_pKernel(pKernel), - m_orig_exec(pKernel->m_exec), - m_orig_continue_mask(pKernel->m_continue_mask) - { - pKernel->m_continue_mask.all_off(); - -#ifdef _DEBUG - m_prev_in_loop = pKernel->m_in_loop; - pKernel->m_in_loop = true; -#endif - } - - CPPSPMD_FORCE_INLINE ~scoped_while_restorer() - { - m_pKernel->m_exec = m_orig_exec & m_pKernel->m_kernel_exec; - m_pKernel->m_continue_mask = m_orig_continue_mask; -#ifdef _DEBUG - m_pKernel->m_in_loop = m_prev_in_loop; - m_pKernel->check_masks(); -#endif - } -}; - -#undef SPMD_WHILE -#undef SPMD_WEND -#define SPMD_WHILE(cond) { scoped_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); while(true) { exec_mask CPPSPMD_GLUER2(cond_exec, __LINE__) = exec_mask(vbool(cond)); \ - m_exec = m_exec & CPPSPMD_GLUER2(cond_exec, __LINE__); if (!any(m_exec)) break; - -#define SPMD_WEND m_exec = m_exec | m_continue_mask; m_continue_mask = exec_mask::all_off(); check_masks(); } } - -// Nesting is not supported (although it will compile, but the results won't make much sense). -#define SPMD_FOREACH(loop_var, bi, ei) if (((bi) != (ei)) && (any(m_exec))) { \ - scoped_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); \ - uint32_t b = (uint32_t)(bi), e = (uint32_t)(ei); if ((b) > (e)) { std::swap(b, e); } const uint32_t total_full = ((e) - (b)) >> PROGRAM_COUNT_SHIFT, total_partial = ((e) - (b)) & (PROGRAM_COUNT - 1); \ - lint_t loop_var = program_index + (int)b; const uint32_t total_loops = total_full + (total_partial ? 1U : 0U); \ - for (uint32_t CPPSPMD_GLUER2(_foreach_counter, __LINE__) = 0; CPPSPMD_GLUER2(_foreach_counter, __LINE__) < total_loops; ++CPPSPMD_GLUER2(_foreach_counter, __LINE__)) { \ - if ((CPPSPMD_GLUER2(_foreach_counter, __LINE__) == (total_loops - 1)) && (total_partial)) { exec_mask partial_mask = exec_mask(vint_t((int)total_partial) > vint_t(program_index)); m_exec = m_exec & partial_mask; } - -#define SPMD_FOREACH_END(loop_var) m_exec = m_exec | m_continue_mask; if (!any(m_exec)) break; m_continue_mask = exec_mask::all_off(); check_masks(); store_all(loop_var, loop_var + PROGRAM_COUNT); } } - -// Okay to use spmd_continue or spmd_return, but not spmd_break -#define SPMD_FOREACH_ACTIVE(index_var) int64_t index_var; { uint64_t _movemask = m_exec.get_movemask(); if (_movemask) { scoped_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); \ - for (uint32_t _i = 0; _i < PROGRAM_COUNT; ++_i) { \ - if (_movemask & (1U << _i)) { \ - m_exec.enable_lane(_i); m_exec = m_exec & m_kernel_exec; \ - (index_var) = _i; \ - -#define SPMD_FOREACH_ACTIVE_END } } } } - -// Okay to use spmd_continue, but not spmd_break/spmd_continue -#define SPMD_FOREACH_UNIQUE_INT(index_var, var) { scoped_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); \ - CPPSPMD_DECL(int_t, _vals[PROGRAM_COUNT]); store_linear_all(_vals, var); std::sort(_vals, _vals + PROGRAM_COUNT); \ - const int _n = (int)(std::unique(_vals, _vals + PROGRAM_COUNT) - _vals); \ - for (int _i = 0; _i < _n; ++_i) { int index_var = _vals[_i]; vbool cond = (vint_t(var) == vint_t(index_var)); m_exec = exec_mask(cond); - -#define SPMD_FOREACH_UNIQUE_INT_END } } - -struct scoped_simple_while_restorer -{ - spmd_kernel* m_pKernel; - exec_mask m_orig_exec; -#ifdef _DEBUG - bool m_prev_in_loop; -#endif - - CPPSPMD_FORCE_INLINE scoped_simple_while_restorer(spmd_kernel* pKernel) : - m_pKernel(pKernel), - m_orig_exec(pKernel->m_exec) - { - -#ifdef _DEBUG - m_prev_in_loop = pKernel->m_in_loop; - pKernel->m_in_loop = true; -#endif - } - - CPPSPMD_FORCE_INLINE ~scoped_simple_while_restorer() - { - m_pKernel->m_exec = m_orig_exec; -#ifdef _DEBUG - m_pKernel->m_in_loop = m_prev_in_loop; - m_pKernel->check_masks(); -#endif - } -}; - -// Cannot use SPMD break, continue, or return inside simple while - -#define SPMD_SWHILE(cond) { scoped_simple_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); \ - while(true) { \ - exec_mask CPPSPMD_GLUER2(cond_exec, __LINE__) = exec_mask(vbool(cond)); m_exec = m_exec & CPPSPMD_GLUER2(cond_exec, __LINE__); if (!any(m_exec)) break; -#define SPMD_SWEND } } - -// Cannot use SPMD break, continue, or return inside simple do -#define SPMD_SDO { scoped_simple_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); while(true) { -#define SPMD_SEND_DO(cond) exec_mask CPPSPMD_GLUER2(cond_exec, __LINE__) = exec_mask(vbool(cond)); m_exec = m_exec & CPPSPMD_GLUER2(cond_exec, __LINE__); if (!any(m_exec)) break; } } - -#undef SPMD_FOR -#undef SPMD_END_FOR -#define SPMD_FOR(for_init, for_cond) { for_init; scoped_while_restorer CPPSPMD_GLUER2(_while_restore_, __LINE__)(this); while(true) { exec_mask CPPSPMD_GLUER2(cond_exec, __LINE__) = exec_mask(vbool(for_cond)); \ - m_exec = m_exec & CPPSPMD_GLUER2(cond_exec, __LINE__); if (!any(m_exec)) break; -#define SPMD_END_FOR(for_inc) m_exec = m_exec | m_continue_mask; m_continue_mask = exec_mask::all_off(); check_masks(); for_inc; } } - -template -CPPSPMD_FORCE_INLINE void spmd_kernel::spmd_for(const ForInitBody& forInitBody, const ForCondBody& forCondBody, const ForIncrBody& forIncrBody, const ForBody& forBody) -{ - exec_mask orig_exec = m_exec; - - forInitBody(); - - exec_mask orig_continue_mask = m_continue_mask; - m_continue_mask = exec_mask::all_off(); - -#ifdef _DEBUG - const bool prev_in_loop = m_in_loop; - m_in_loop = true; -#endif - - while(true) - { - exec_mask cond_exec = exec_mask(forCondBody()); - m_exec = m_exec & cond_exec; - - if (!any(m_exec)) - break; - - forBody(); - - m_exec = m_exec | m_continue_mask; - m_continue_mask = exec_mask::all_off(); - check_masks(); - - forIncrBody(); - } - - m_exec = orig_exec & m_kernel_exec; - m_continue_mask = orig_continue_mask; - -#ifdef _DEBUG - m_in_loop = prev_in_loop; - check_masks(); -#endif -} diff --git a/WickedEngine/Utility/basis_universal/encoder/cppspmd_math.h b/WickedEngine/Utility/basis_universal/encoder/cppspmd_math.h deleted file mode 100644 index e7b3202b8..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/cppspmd_math.h +++ /dev/null @@ -1,725 +0,0 @@ -// Do not include this header directly. -// -// Copyright 2020-2021 Binomial LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// The general goal of these vectorized estimated math functions is scalability/performance. -// There are explictly no checks NaN's/Inf's on the input arguments. There are no assertions either. -// These are fast estimate functions - if you need more than that, use stdlib. Please do a proper -// engineering analysis before relying on them. -// I have chosen functions written by others, ported them to CppSPMD, then measured their abs/rel errors. -// I compared each to the ones in DirectXMath and stdlib's for accuracy/performance. - -CPPSPMD_FORCE_INLINE vfloat fmod_inv(const vfloat& a, const vfloat& b, const vfloat& b_inv) -{ - vfloat c = frac(abs(a * b_inv)) * abs(b); - return spmd_ternaryf(a < 0, -c, c); -} - -CPPSPMD_FORCE_INLINE vfloat fmod_inv_p(const vfloat& a, const vfloat& b, const vfloat& b_inv) -{ - return frac(a * b_inv) * b; -} - -// Avoids dividing by zero or very small values. -CPPSPMD_FORCE_INLINE vfloat safe_div(vfloat a, vfloat b, float fDivThresh = 1e-7f) -{ - return a / spmd_ternaryf( abs(b) > fDivThresh, b, spmd_ternaryf(b < 0.0f, -fDivThresh, fDivThresh) ); -} - -/* - clang 9.0.0 for win /fp:precise release - f range: 0.0000000000001250 10000000000.0000000000000000, vals: 1073741824 - - log2_est(): - max abs err: 0.0000023076808731 - max rel err: 0.0000000756678881 - avg abs err: 0.0000007535452724 - avg rel err: 0.0000000235117843 - - XMVectorLog2(): - max abs err: 0.0000023329709933 - max rel err: 0.0000000826961046 - avg abs err: 0.0000007564889684 - avg rel err: 0.0000000236051899 - - std::log2f(): - max abs err: 0.0000020265979401 - max rel err: 0.0000000626647654 - avg abs err: 0.0000007494445227 - avg rel err: 0.0000000233800985 -*/ - -// See https://tech.ebayinc.com/engineering/fast-approximate-logarithms-part-iii-the-formulas/ -inline vfloat spmd_kernel::log2_est(vfloat v) -{ - vfloat signif, fexp; - - // Just clamp to a very small value, instead of checking for invalid inputs. - vfloat x = max(v, 2.2e-38f); - - /* - * Assume IEEE representation, which is sgn(1):exp(8):frac(23) - * representing (1+frac)*2^(exp-127). Call 1+frac the significand - */ - - // get exponent - vint ux1_i = cast_vfloat_to_vint(x); - - vint exp = VUINT_SHIFT_RIGHT(ux1_i & 0x7F800000, 23); - - // actual exponent is exp-127, will subtract 127 later - - vint ux2_i; - vfloat ux2_f; - - vint greater = ux1_i & 0x00400000; // true if signif > 1.5 - SPMD_SIF(greater != 0) - { - // signif >= 1.5 so need to divide by 2. Accomplish this by stuffing exp = 126 which corresponds to an exponent of -1 - store_all(ux2_i, (ux1_i & 0x007FFFFF) | 0x3f000000); - - store_all(ux2_f, cast_vint_to_vfloat(ux2_i)); - - // 126 instead of 127 compensates for division by 2 - store_all(fexp, vfloat(exp - 126)); - } - SPMD_SELSE(greater != 0) - { - // get signif by stuffing exp = 127 which corresponds to an exponent of 0 - store(ux2_i, (ux1_i & 0x007FFFFF) | 0x3f800000); - - store(ux2_f, cast_vint_to_vfloat(ux2_i)); - - store(fexp, vfloat(exp - 127)); - } - SPMD_SENDIF - - store_all(signif, ux2_f); - store_all(signif, signif - 1.0f); - - const float a = 0.1501692f, b = 3.4226132f, c = 5.0225057f, d = 4.1130283f, e = 3.4813372f; - - vfloat xm1 = signif; - vfloat xm1sqr = xm1 * xm1; - - return fexp + ((a * (xm1sqr * xm1) + b * xm1sqr + c * xm1) / (xm1sqr + d * xm1 + e)); - - // fma lowers accuracy for SSE4.1 - no idea why (compiler reordering?) - //return fexp + ((vfma(a, (xm1sqr * xm1), vfma(b, xm1sqr, c * xm1))) / (xm1sqr + vfma(d, xm1, e))); -} - -// Uses log2_est(), so this function must be <= the precision of that. -inline vfloat spmd_kernel::log_est(vfloat v) -{ - return log2_est(v) * 0.693147181f; -} - -CPPSPMD_FORCE_INLINE void spmd_kernel::reduce_expb(vfloat& arg, vfloat& two_int_a, vint& adjustment) -{ - // Assume we're using equation (2) - store_all(adjustment, 0); - - // integer part of the input argument - vint int_arg = (vint)arg; - - // if frac(arg) is in [0.5, 1.0]... - SPMD_SIF((arg - int_arg) > 0.5f) - { - store(adjustment, 1); - - // then change it to [0.0, 0.5] - store(arg, arg - 0.5f); - } - SPMD_SENDIF - - // arg == just the fractional part - store_all(arg, arg - (vfloat)int_arg); - - // Now compute 2** (int) arg. - store_all(int_arg, min(int_arg + 127, 254)); - - store_all(two_int_a, cast_vint_to_vfloat(VINT_SHIFT_LEFT(int_arg, 23))); -} - -/* - clang 9.0.0 for win /fp:precise release - f range : -50.0000000000000000 49.9999940395355225, vals : 16777216 - - exp2_est(): - Total passed near - zero check : 16777216 - Total sign diffs : 0 - max abs err: 1668910609.7500000000000000 - max rel err: 0.0000015642030031 - avg abs err: 10793794.4007573910057545 - avg rel err: 0.0000003890893282 - - XMVectorExp2(): - Total passed near-zero check: 16777216 - Total sign diffs: 0 - max abs err: 1665552836.8750000000000000 - max rel err: 0.0000114674862370 - avg abs err: 10771868.2627860084176064 - avg rel err: 0.0000011218880770 - - std::exp2f(): - Total passed near-zero check: 16777216 - Total sign diffs: 0 - max abs err: 1591636585.6250000000000000 - max rel err: 0.0000014849731018 - avg abs err: 10775800.3204844966530800 - avg rel err: 0.0000003851496422 -*/ - -// http://www.ganssle.com/item/approximations-c-code-exponentiation-log.htm -inline vfloat spmd_kernel::exp2_est(vfloat arg) -{ - SPMD_BEGIN_CALL - - const vfloat P00 = +7.2152891521493f; - const vfloat P01 = +0.0576900723731f; - const vfloat Q00 = +20.8189237930062f; - const vfloat Q01 = +1.0f; - const vfloat sqrt2 = 1.4142135623730950488f; // sqrt(2) for scaling - - vfloat result = 0.0f; - - // Return 0 if arg is too large. - // We're not introducing inf/nan's into calculations, or risk doing so by returning huge default values. - SPMD_IF(abs(arg) > 126.0f) - { - spmd_return(); - } - SPMD_END_IF - - // 2**(int(a)) - vfloat two_int_a; - - // set to 1 by reduce_expb - vint adjustment; - - // 0 if arg is +; 1 if negative - vint negative = 0; - - // If the input is negative, invert it. At the end we'll take the reciprocal, since n**(-1) = 1/(n**x). - SPMD_SIF(arg < 0.0f) - { - store(arg, -arg); - store(negative, 1); - } - SPMD_SENDIF - - store_all(arg, min(arg, 126.0f)); - - // reduce to [0.0, 0.5] - reduce_expb(arg, two_int_a, adjustment); - - // The format of the polynomial is: - // answer=(Q(x**2) + x*P(x**2))/(Q(x**2) - x*P(x**2)) - // - // The following computes the polynomial in several steps: - - // Q(x**2) - vfloat Q = vfma(Q01, (arg * arg), Q00); - - // x*P(x**2) - vfloat x_P = arg * (vfma(P01, arg * arg, P00)); - - vfloat answer = (Q + x_P) / (Q - x_P); - - // Now correct for the scaling factor of 2**(int(a)) - store_all(answer, answer * two_int_a); - - // If the result had a fractional part > 0.5, correct for that - store_all(answer, spmd_ternaryf(adjustment != 0, answer * sqrt2, answer)); - - // Correct for a negative input - SPMD_SIF(negative != 0) - { - store(answer, 1.0f / answer); - } - SPMD_SENDIF - - store(result, answer); - - return result; -} - -inline vfloat spmd_kernel::exp_est(vfloat arg) -{ - // e^x = exp2(x / log_base_e(2)) - // constant is 1.0/(log(2)/log(e)) or 1/log(2) - return exp2_est(arg * 1.44269504f); -} - -inline vfloat spmd_kernel::pow_est(vfloat arg1, vfloat arg2) -{ - return exp_est(log_est(arg1) * arg2); -} - -/* - clang 9.0.0 for win /fp:precise release - Total near-zero: 144, output above near-zero tresh: 30 - Total near-zero avg: 0.0000067941016621 max: 0.0000134706497192 - Total near-zero sign diffs: 5 - Total passed near-zero check: 16777072 - Total sign diffs: 5 - max abs err: 0.0000031375306036 - max rel err: 0.1140846017075028 - avg abs err: 0.0000003026226621 - avg rel err: 0.0000033564977623 -*/ - -// Math from this web page: http://developer.download.nvidia.com/cg/sin.html -// This is ~2x slower than sin_est() or cos_est(), and less accurate, but I'm keeping it here for comparison purposes to help validate/sanity check sin_est() and cos_est(). -inline vfloat spmd_kernel::sincos_est_a(vfloat a, bool sin_flag) -{ - const float c0_x = 0.0f, c0_y = 0.5f, c0_z = 1.0f; - const float c1_x = 0.25f, c1_y = -9.0f, c1_z = 0.75f, c1_w = 0.159154943091f; - const float c2_x = 24.9808039603f, c2_y = -24.9808039603f, c2_z = -60.1458091736f, c2_w = 60.1458091736f; - const float c3_x = 85.4537887573f, c3_y = -85.4537887573f, c3_z = -64.9393539429f, c3_w = 64.9393539429f; - const float c4_x = 19.7392082214f, c4_y = -19.7392082214f, c4_z = -1.0f, c4_w = 1.0f; - - vfloat r0_x, r0_y, r0_z, r1_x, r1_y, r1_z, r2_x, r2_y, r2_z; - - store_all(r1_x, sin_flag ? vfms(c1_w, a, c1_x) : c1_w * a); - - store_all(r1_y, frac(r1_x)); - - store_all(r2_x, (vfloat)(r1_y < c1_x)); - - store_all(r2_y, (vfloat)(r1_y >= c1_y)); - store_all(r2_z, (vfloat)(r1_y >= c1_z)); - - store_all(r2_y, vfma(r2_x, c4_z, vfma(r2_y, c4_w, r2_z * c4_z))); - - store_all(r0_x, c0_x - r1_y); - store_all(r0_y, c0_y - r1_y); - store_all(r0_z, c0_z - r1_y); - - store_all(r0_x, r0_x * r0_x); - store_all(r0_y, r0_y * r0_y); - store_all(r0_z, r0_z * r0_z); - - store_all(r1_x, vfma(c2_x, r0_x, c2_z)); - store_all(r1_y, vfma(c2_y, r0_y, c2_w)); - store_all(r1_z, vfma(c2_x, r0_z, c2_z)); - - store_all(r1_x, vfma(r1_x, r0_x, c3_x)); - store_all(r1_y, vfma(r1_y, r0_y, c3_y)); - store_all(r1_z, vfma(r1_z, r0_z, c3_x)); - - store_all(r1_x, vfma(r1_x, r0_x, c3_z)); - store_all(r1_y, vfma(r1_y, r0_y, c3_w)); - store_all(r1_z, vfma(r1_z, r0_z, c3_z)); - - store_all(r1_x, vfma(r1_x, r0_x, c4_x)); - store_all(r1_y, vfma(r1_y, r0_y, c4_y)); - store_all(r1_z, vfma(r1_z, r0_z, c4_x)); - - store_all(r1_x, vfma(r1_x, r0_x, c4_z)); - store_all(r1_y, vfma(r1_y, r0_y, c4_w)); - store_all(r1_z, vfma(r1_z, r0_z, c4_z)); - - store_all(r0_x, vfnma(r1_x, r2_x, vfnma(r1_y, r2_y, r1_z * -r2_z))); - - return r0_x; -} - -// positive values only -CPPSPMD_FORCE_INLINE vfloat spmd_kernel::recip_est1(const vfloat& q) -{ - //const int mag = 0x7EF312AC; // 2 NR iters, 3 is 0x7EEEEBB3 - const int mag = 0x7EF311C3; - const float fMinThresh = .0000125f; - - vfloat l = spmd_ternaryf(q >= fMinThresh, q, cast_vint_to_vfloat(vint(mag))); - - vint x_l = vint(mag) - cast_vfloat_to_vint(l); - - vfloat rcp_l = cast_vint_to_vfloat(x_l); - - return rcp_l * vfnma(rcp_l, q, 2.0f); -} - -CPPSPMD_FORCE_INLINE vfloat spmd_kernel::recip_est1_pn(const vfloat& t) -{ - //const int mag = 0x7EF312AC; // 2 NR iters, 3 is 0x7EEEEBB3 - const int mag = 0x7EF311C3; - const float fMinThresh = .0000125f; - - vfloat s = sign(t); - vfloat q = abs(t); - - vfloat l = spmd_ternaryf(q >= fMinThresh, q, cast_vint_to_vfloat(vint(mag))); - - vint x_l = vint(mag) - cast_vfloat_to_vint(l); - - vfloat rcp_l = cast_vint_to_vfloat(x_l); - - return rcp_l * vfnma(rcp_l, q, 2.0f) * s; -} - -// https://basesandframes.files.wordpress.com/2020/04/even_faster_math_functions_green_2020.pdf -// https://github.com/hcs0/Hackers-Delight/blob/master/rsqrt.c.txt -CPPSPMD_FORCE_INLINE vfloat spmd_kernel::rsqrt_est1(vfloat x0) -{ - vfloat xhalf = 0.5f * x0; - vfloat x = cast_vint_to_vfloat(vint(0x5F375A82) - (VINT_SHIFT_RIGHT(cast_vfloat_to_vint(x0), 1))); - return x * vfnma(xhalf * x, x, 1.5008909f); -} - -CPPSPMD_FORCE_INLINE vfloat spmd_kernel::rsqrt_est2(vfloat x0) -{ - vfloat xhalf = 0.5f * x0; - vfloat x = cast_vint_to_vfloat(vint(0x5F37599E) - (VINT_SHIFT_RIGHT(cast_vfloat_to_vint(x0), 1))); - vfloat x1 = x * vfnma(xhalf * x, x, 1.5); - vfloat x2 = x1 * vfnma(xhalf * x1, x1, 1.5); - return x2; -} - -// Math from: http://developer.download.nvidia.com/cg/atan2.html -// TODO: Needs more validation, parameter checking. -CPPSPMD_FORCE_INLINE vfloat spmd_kernel::atan2_est(vfloat y, vfloat x) -{ - vfloat t1 = abs(y); - vfloat t3 = abs(x); - - vfloat t0 = max(t3, t1); - store_all(t1, min(t3, t1)); - - store_all(t3, t1 / t0); - - vfloat t4 = t3 * t3; - store_all(t0, vfma(-0.013480470f, t4, 0.057477314f)); - store_all(t0, vfms(t0, t4, 0.121239071f)); - store_all(t0, vfma(t0, t4, 0.195635925f)); - store_all(t0, vfms(t0, t4, 0.332994597f)); - store_all(t0, vfma(t0, t4, 0.999995630f)); - store_all(t3, t0 * t3); - - store_all(t3, spmd_ternaryf(abs(y) > abs(x), vfloat(1.570796327f) - t3, t3)); - - store_all(t3, spmd_ternaryf(x < 0.0f, vfloat(3.141592654f) - t3, t3)); - store_all(t3, spmd_ternaryf(y < 0.0f, -t3, t3)); - - return t3; -} - -/* - clang 9.0.0 for win /fp:precise release - Tested range: -25.1327412287183449 25.1327382326621169, vals : 16777216 - Skipped angles near 90/270 within +- .001 radians. - Near-zero threshold: .0000125f - Near-zero output above check threshold: 1e-6f - - Total near-zero: 144, output above near-zero tresh: 20 - Total near-zero avg: 0.0000067510751968 max: 0.0000133514404297 - Total near-zero sign diffs: 5 - Total passed near-zero check: 16766400 - Total sign diffs: 5 - max abs err: 1.4982600811139264 - max rel err: 0.1459155900188041 - avg rel err: 0.0000054659502568 - - XMVectorTan() precise: - Total near-zero: 144, output above near-zero tresh: 18 - Total near-zero avg: 0.0000067641216186 max: 0.0000133524126795 - Total near-zero sign diffs: 0 - Total passed near-zero check: 16766400 - Total sign diffs: 0 - max abs err: 1.9883573246424930 - max rel err: 0.1459724171926864 - avg rel err: 0.0000054965766843 - - std::tanf(): - Total near-zero: 144, output above near-zero tresh: 0 - Total near-zero avg: 0.0000067116930779 max: 0.0000127713074107 - Total near-zero sign diffs: 11 - Total passed near-zero check: 16766400 - Total sign diffs: 11 - max abs err: 0.8989131818294709 - max rel err: 0.0573181403173166 - avg rel err: 0.0000030791301203 - - Originally from: - http://www.ganssle.com/approx.htm -*/ - -CPPSPMD_FORCE_INLINE vfloat spmd_kernel::tan82(vfloat x) -{ - // Original double version was 8.2 digits - //double c1 = 211.849369664121f, c2 = -12.5288887278448f, c3 = 269.7350131214121f, c4 = -71.4145309347748f; - // Tuned float constants for lower avg rel error (without using FMA3): - const float c1 = 211.849350f, c2 = -12.5288887f, c3 = 269.734985f, c4 = -71.4145203f; - vfloat x2 = x * x; - return (x * (vfma(c2, x2, c1)) / (vfma(x2, (c4 + x2), c3))); -} - -// Don't call this for angles close to 90/270!. -inline vfloat spmd_kernel::tan_est(vfloat x) -{ - const float fPi = 3.141592653589793f, fOneOverPi = 0.3183098861837907f; - CPPSPMD_DECL(const uint8_t, s_table0[16]) = { 128 + 0, 128 + 2, 128 + -2, 128 + 4, 128 + 0, 128 + 2, 128 + -2, 128 + 4, 128 + 0, 128 + 2, 128 + -2, 128 + 4, 128 + 0, 128 + 2, 128 + -2, 128 + 4 }; - - vint table = init_lookup4(s_table0); // a load - vint sgn = cast_vfloat_to_vint(x) & 0x80000000; - - store_all(x, abs(x)); - vfloat orig_x = x; - - vfloat q = x * fOneOverPi; - store_all(x, q - floor(q)); - - vfloat x4 = x * 4.0f; - vint octant = (vint)(x4); - - vfloat x0 = spmd_ternaryf((octant & 1) != 0, -x4, x4); - - vint k = table_lookup4_8(octant, table) & 0xFF; // a shuffle - - vfloat bias = (vfloat)k + -128.0f; - vfloat y = x0 + bias; - - vfloat z = tan82(y); - - vfloat r; - - vbool octant_one_or_two = (octant == 1) || (octant == 2); - - // SPMD optimization - skip costly divide if we can - if (spmd_any(octant_one_or_two)) - { - const float fDivThresh = .4371e-7f; - vfloat one_over_z = 1.0f / spmd_ternaryf(abs(z) > fDivThresh, z, spmd_ternaryf(z < 0.0f, -fDivThresh, fDivThresh)); - - vfloat b = spmd_ternaryf(octant_one_or_two, one_over_z, z); - store_all(r, spmd_ternaryf((octant & 2) != 0, -b, b)); - } - else - { - store_all(r, spmd_ternaryf(octant == 0, z, -z)); - } - - // Small angle approximation, to decrease the max rel error near Pi. - SPMD_SIF(x >= (1.0f - .0003125f*4.0f)) - { - store(r, vfnma(floor(q) + 1.0f, fPi, orig_x)); - } - SPMD_SENDIF - - return cast_vint_to_vfloat(cast_vfloat_to_vint(r) ^ sgn); -} - -inline void spmd_kernel::seed_rand(rand_context& x, vint seed) -{ - store(x.a, 0xf1ea5eed); - store(x.b, seed ^ 0xd8487b1f); - store(x.c, seed ^ 0xdbadef9a); - store(x.d, seed); - for (int i = 0; i < 20; ++i) - (void)get_randu(x); -} - -// https://burtleburtle.net/bob/rand/smallprng.html -// Returns 32-bit unsigned random numbers. -inline vint spmd_kernel::get_randu(rand_context& x) -{ - vint e = x.a - VINT_ROT(x.b, 27); - store(x.a, x.b ^ VINT_ROT(x.c, 17)); - store(x.b, x.c + x.d); - store(x.c, x.d + e); - store(x.d, e + x.a); - return x.d; -} - -// Returns random numbers between [low, high), or low if low >= high -inline vint spmd_kernel::get_randi(rand_context& x, vint low, vint high) -{ - vint rnd = get_randu(x); - - vint range = high - low; - - vint rnd_range = mulhiu(rnd, range); - - return spmd_ternaryi(low < high, low + rnd_range, low); -} - -// Returns random numbers between [low, high), or low if low >= high -inline vfloat spmd_kernel::get_randf(rand_context& x, vfloat low, vfloat high) -{ - vint rndi = get_randu(x) & 0x7fffff; - - vfloat rnd = (vfloat)(rndi) * (1.0f / 8388608.0f); - - return spmd_ternaryf(low < high, vfma(high - low, rnd, low), low); -} - -CPPSPMD_FORCE_INLINE void spmd_kernel::init_reverse_bits(vint& tab1, vint& tab2) -{ - const uint8_t tab1_bytes[16] = { 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 }; - const uint8_t tab2_bytes[16] = { 0, 8 << 4, 4 << 4, 12 << 4, 2 << 4, 10 << 4, 6 << 4, 14 << 4, 1 << 4, 9 << 4, 5 << 4, 13 << 4, 3 << 4, 11 << 4, 7 << 4, 15 << 4 }; - store_all(tab1, init_lookup4(tab1_bytes)); - store_all(tab2, init_lookup4(tab2_bytes)); -} - -CPPSPMD_FORCE_INLINE vint spmd_kernel::reverse_bits(vint k, vint tab1, vint tab2) -{ - vint r0 = table_lookup4_8(k & 0x7F7F7F7F, tab2); - vint r1 = table_lookup4_8(VUINT_SHIFT_RIGHT(k, 4) & 0x7F7F7F7F, tab1); - vint r3 = r0 | r1; - return byteswap(r3); -} - -CPPSPMD_FORCE_INLINE vint spmd_kernel::count_leading_zeros(vint x) -{ - CPPSPMD_DECL(const uint8_t, s_tab[16]) = { 0, 3, 2, 2, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0 }; - - vint tab = init_lookup4(s_tab); - - //x <= 0x0000ffff - vbool c0 = (x & 0xFFFF0000) == 0; - vint n0 = spmd_ternaryi(c0, 16, 0); - vint x0 = spmd_ternaryi(c0, VINT_SHIFT_LEFT(x, 16), x); - - //x <= 0x00ffffff - vbool c1 = (x0 & 0xFF000000) == 0; - vint n1 = spmd_ternaryi(c1, n0 + 8, n0); - vint x1 = spmd_ternaryi(c1, VINT_SHIFT_LEFT(x0, 8), x0); - - //x <= 0x0fffffff - vbool c2 = (x1 & 0xF0000000) == 0; - vint n2 = spmd_ternaryi(c2, n1 + 4, n1); - vint x2 = spmd_ternaryi(c2, VINT_SHIFT_LEFT(x1, 4), x1); - - return table_lookup4_8(VUINT_SHIFT_RIGHT(x2, 28), tab) + n2; -} - -CPPSPMD_FORCE_INLINE vint spmd_kernel::count_leading_zeros_alt(vint x) -{ - //x <= 0x0000ffff - vbool c0 = (x & 0xFFFF0000) == 0; - vint n0 = spmd_ternaryi(c0, 16, 0); - vint x0 = spmd_ternaryi(c0, VINT_SHIFT_LEFT(x, 16), x); - - //x <= 0x00ffffff - vbool c1 = (x0 & 0xFF000000) == 0; - vint n1 = spmd_ternaryi(c1, n0 + 8, n0); - vint x1 = spmd_ternaryi(c1, VINT_SHIFT_LEFT(x0, 8), x0); - - //x <= 0x0fffffff - vbool c2 = (x1 & 0xF0000000) == 0; - vint n2 = spmd_ternaryi(c2, n1 + 4, n1); - vint x2 = spmd_ternaryi(c2, VINT_SHIFT_LEFT(x1, 4), x1); - - // x <= 0x3fffffff - vbool c3 = (x2 & 0xC0000000) == 0; - vint n3 = spmd_ternaryi(c3, n2 + 2, n2); - vint x3 = spmd_ternaryi(c3, VINT_SHIFT_LEFT(x2, 2), x2); - - // x <= 0x7fffffff - vbool c4 = (x3 & 0x80000000) == 0; - return spmd_ternaryi(c4, n3 + 1, n3); -} - -CPPSPMD_FORCE_INLINE vint spmd_kernel::count_trailing_zeros(vint x) -{ - // cast the least significant bit in v to a float - vfloat f = (vfloat)(x & -x); - - // extract exponent and adjust - return VUINT_SHIFT_RIGHT(cast_vfloat_to_vint(f), 23) - 0x7F; -} - -CPPSPMD_FORCE_INLINE vint spmd_kernel::count_set_bits(vint x) -{ - vint v = x - (VUINT_SHIFT_RIGHT(x, 1) & 0x55555555); - vint v1 = (v & 0x33333333) + (VUINT_SHIFT_RIGHT(v, 2) & 0x33333333); - return VUINT_SHIFT_RIGHT(((v1 + VUINT_SHIFT_RIGHT(v1, 4) & 0xF0F0F0F) * 0x1010101), 24); -} - -CPPSPMD_FORCE_INLINE vint cmple_epu16(const vint &a, const vint &b) -{ - return cmpeq_epi16(subs_epu16(a, b), vint(0)); -} - -CPPSPMD_FORCE_INLINE vint cmpge_epu16(const vint &a, const vint &b) -{ - return cmple_epu16(b, a); -} - -CPPSPMD_FORCE_INLINE vint cmpgt_epu16(const vint &a, const vint &b) -{ - return andnot(cmpeq_epi16(a, b), cmple_epu16(b, a)); -} - -CPPSPMD_FORCE_INLINE vint cmplt_epu16(const vint &a, const vint &b) -{ - return cmpgt_epu16(b, a); -} - -CPPSPMD_FORCE_INLINE vint cmpge_epi16(const vint &a, const vint &b) -{ - return cmpeq_epi16(a, b) | cmpgt_epi16(a, b); -} - -CPPSPMD_FORCE_INLINE vint cmple_epi16(const vint &a, const vint &b) -{ - return cmpge_epi16(b, a); -} - -void spmd_kernel::print_vint(vint v) -{ - for (uint32_t i = 0; i < PROGRAM_COUNT; i++) - printf("%i ", extract(v, i)); - printf("\n"); -} - -void spmd_kernel::print_vbool(vbool v) -{ - for (uint32_t i = 0; i < PROGRAM_COUNT; i++) - printf("%i ", extract(v, i) ? 1 : 0); - printf("\n"); -} - -void spmd_kernel::print_vint_hex(vint v) -{ - for (uint32_t i = 0; i < PROGRAM_COUNT; i++) - printf("0x%X ", extract(v, i)); - printf("\n"); -} - -void spmd_kernel::print_active_lanes(const char *pPrefix) -{ - CPPSPMD_DECL(int, flags[PROGRAM_COUNT]); - memset(flags, 0, sizeof(flags)); - storeu_linear(flags, vint(1)); - - if (pPrefix) - printf("%s", pPrefix); - - for (uint32_t i = 0; i < PROGRAM_COUNT; i++) - { - if (flags[i]) - printf("%u ", i); - } - printf("\n"); -} - -void spmd_kernel::print_vfloat(vfloat v) -{ - for (uint32_t i = 0; i < PROGRAM_COUNT; i++) - printf("%f ", extract(v, i)); - printf("\n"); -} diff --git a/WickedEngine/Utility/basis_universal/encoder/cppspmd_math_declares.h b/WickedEngine/Utility/basis_universal/encoder/cppspmd_math_declares.h deleted file mode 100644 index cdb6447b6..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/cppspmd_math_declares.h +++ /dev/null @@ -1,89 +0,0 @@ -// Do not include this header directly. -// This header defines shared struct spmd_kernel helpers. -// -// Copyright 2020-2021 Binomial LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// See cppspmd_math.h for detailed error statistics. - -CPPSPMD_FORCE_INLINE void reduce_expb(vfloat& arg, vfloat& two_int_a, vint& adjustment); -CPPSPMD_FORCE_INLINE vfloat tan56(vfloat x); -CPPSPMD_FORCE_INLINE vfloat tan82(vfloat x); - -inline vfloat log2_est(vfloat v); - -inline vfloat log_est(vfloat v); - -inline vfloat exp2_est(vfloat arg); - -inline vfloat exp_est(vfloat arg); - -inline vfloat pow_est(vfloat arg1, vfloat arg2); - -CPPSPMD_FORCE_INLINE vfloat recip_est1(const vfloat& q); -CPPSPMD_FORCE_INLINE vfloat recip_est1_pn(const vfloat& q); - -inline vfloat mod_angles(vfloat a); - -inline vfloat sincos_est_a(vfloat a, bool sin_flag); -CPPSPMD_FORCE_INLINE vfloat sin_est_a(vfloat a) { return sincos_est_a(a, true); } -CPPSPMD_FORCE_INLINE vfloat cos_est_a(vfloat a) { return sincos_est_a(a, false); } - -inline vfloat sin_est(vfloat a); - -inline vfloat cos_est(vfloat a); - -// Don't call with values <= 0. -CPPSPMD_FORCE_INLINE vfloat rsqrt_est1(vfloat x0); - -// Don't call with values <= 0. -CPPSPMD_FORCE_INLINE vfloat rsqrt_est2(vfloat x0); - -CPPSPMD_FORCE_INLINE vfloat atan2_est(vfloat y, vfloat x); - -CPPSPMD_FORCE_INLINE vfloat atan_est(vfloat x) { return atan2_est(x, vfloat(1.0f)); } - -// Don't call this for angles close to 90/270! -inline vfloat tan_est(vfloat x); - -// https://burtleburtle.net/bob/rand/smallprng.html -struct rand_context { vint a, b, c, d; }; - -inline void seed_rand(rand_context& x, vint seed); - -// Returns 32-bit unsigned random numbers. -inline vint get_randu(rand_context& x); - -// Returns random numbers between [low, high), or low if low >= high -inline vint get_randi(rand_context& x, vint low, vint high); - -// Returns random numbers between [low, high), or low if low >= high -inline vfloat get_randf(rand_context& x, vfloat low, vfloat high); - -CPPSPMD_FORCE_INLINE void init_reverse_bits(vint& tab1, vint& tab2); -CPPSPMD_FORCE_INLINE vint reverse_bits(vint k, vint tab1, vint tab2); - -CPPSPMD_FORCE_INLINE vint count_leading_zeros(vint x); -CPPSPMD_FORCE_INLINE vint count_leading_zeros_alt(vint x); - -CPPSPMD_FORCE_INLINE vint count_trailing_zeros(vint x); - -CPPSPMD_FORCE_INLINE vint count_set_bits(vint x); - -void print_vint(vint v); -void print_vbool(vbool v); -void print_vint_hex(vint v); -void print_active_lanes(const char *pPrefix); -void print_vfloat(vfloat v); - diff --git a/WickedEngine/Utility/basis_universal/encoder/cppspmd_sse.h b/WickedEngine/Utility/basis_universal/encoder/cppspmd_sse.h deleted file mode 100644 index 4c61bab7b..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/cppspmd_sse.h +++ /dev/null @@ -1,2105 +0,0 @@ -// cppspmd_sse.h -// Copyright 2020-2022 Binomial LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// Notes for Basis Universal: -// All of the "cppspmd" code and headers are OPTIONAL to Basis Universal. if BASISU_SUPPORT_SSE is 0, it will never be included and does not impact compilation. -// The techniques used in this code were originally demonstrated for AVX2 by Nicolas Guillemot, Jefferson Amstutz in their "CppSPMD" project. -// This is new code for use in Basis Universal, although it uses the same general SPMD techniques in SSE 2/4. - -#include -#include -#include -#include -#include -#include - -#if CPPSPMD_SSE2 -#include // SSE -#include // SSE2 -#else -#include // SSE -#include // SSE2 -#include // SSE3 -#include // SSSE3 -#include // SSE4.1 -//#include // SSE4.2 -#endif - -#undef CPPSPMD_SSE -#undef CPPSPMD_AVX1 -#undef CPPSPMD_AVX2 -#undef CPPSPMD_AVX -#undef CPPSPMD_FLOAT4 -#undef CPPSPMD_INT16 - -#define CPPSPMD_SSE 1 -#define CPPSPMD_AVX 0 -#define CPPSPMD_AVX1 0 -#define CPPSPMD_AVX2 0 -#define CPPSPMD_FLOAT4 0 -#define CPPSPMD_INT16 0 - -#ifdef _MSC_VER - #ifndef CPPSPMD_DECL - #define CPPSPMD_DECL(type, name) __declspec(align(16)) type name - #endif - - #ifndef CPPSPMD_ALIGN - #define CPPSPMD_ALIGN(v) __declspec(align(v)) - #endif - - #define _mm_undefined_si128 _mm_setzero_si128 - #define _mm_undefined_ps _mm_setzero_ps -#else - #ifndef CPPSPMD_DECL - #define CPPSPMD_DECL(type, name) type name __attribute__((aligned(32))) - #endif - - #ifndef CPPSPMD_ALIGN - #define CPPSPMD_ALIGN(v) __attribute__((aligned(v))) - #endif -#endif - -#ifndef CPPSPMD_FORCE_INLINE -#ifdef _DEBUG -#define CPPSPMD_FORCE_INLINE inline -#else - #ifdef _MSC_VER - #define CPPSPMD_FORCE_INLINE __forceinline - #else - #define CPPSPMD_FORCE_INLINE inline - #endif -#endif -#endif - -#undef CPPSPMD -#undef CPPSPMD_ARCH - -#if CPPSPMD_SSE2 - #define CPPSPMD_SSE41 0 - #define CPPSPMD cppspmd_sse2 - #define CPPSPMD_ARCH _sse2 -#else - #define CPPSPMD_SSE41 1 - #define CPPSPMD cppspmd_sse41 - #define CPPSPMD_ARCH _sse41 -#endif - -#ifndef CPPSPMD_GLUER - #define CPPSPMD_GLUER(a, b) a##b -#endif - -#ifndef CPPSPMD_GLUER2 - #define CPPSPMD_GLUER2(a, b) CPPSPMD_GLUER(a, b) -#endif - -#ifndef CPPSPMD_NAME -#define CPPSPMD_NAME(a) CPPSPMD_GLUER2(a, CPPSPMD_ARCH) -#endif - -#undef VASSERT -#define VCOND(cond) ((exec_mask(vbool(cond)) & m_exec).get_movemask() == m_exec.get_movemask()) -#define VASSERT(cond) assert( VCOND(cond) ) - -#define CPPSPMD_ALIGNMENT (16) - -#define storeu_si32(p, a) (void)(*(int*)(p) = _mm_cvtsi128_si32((a))) - -namespace CPPSPMD -{ - -const int PROGRAM_COUNT_SHIFT = 2; -const int PROGRAM_COUNT = 1 << PROGRAM_COUNT_SHIFT; - -template inline N* aligned_new() { void* p = _mm_malloc(sizeof(N), 64); new (p) N; return static_cast(p); } -template void aligned_delete(N* p) { if (p) { p->~N(); _mm_free(p); } } - -CPPSPMD_DECL(const uint32_t, g_allones_128[4]) = { UINT32_MAX, UINT32_MAX, UINT32_MAX, UINT32_MAX }; -CPPSPMD_DECL(const uint32_t, g_x_128[4]) = { UINT32_MAX, 0, 0, 0 }; -CPPSPMD_DECL(const float, g_onef_128[4]) = { 1.0f, 1.0f, 1.0f, 1.0f }; -CPPSPMD_DECL(const uint32_t, g_oneu_128[4]) = { 1, 1, 1, 1 }; - -CPPSPMD_DECL(const uint32_t, g_lane_masks_128[4][4]) = -{ - { UINT32_MAX, 0, 0, 0 }, - { 0, UINT32_MAX, 0, 0 }, - { 0, 0, UINT32_MAX, 0 }, - { 0, 0, 0, UINT32_MAX }, -}; - -#if CPPSPMD_SSE41 -CPPSPMD_FORCE_INLINE __m128i _mm_blendv_epi32(__m128i a, __m128i b, __m128i c) { return _mm_castps_si128(_mm_blendv_ps(_mm_castsi128_ps(a), _mm_castsi128_ps(b), _mm_castsi128_ps(c))); } -#endif - -CPPSPMD_FORCE_INLINE __m128i blendv_epi8(__m128i a, __m128i b, __m128i mask) -{ -#if CPPSPMD_SSE2 - return _mm_castps_si128(_mm_or_ps(_mm_and_ps(_mm_castsi128_ps(mask), _mm_castsi128_ps(b)), _mm_andnot_ps(_mm_castsi128_ps(mask), _mm_castsi128_ps(a)))); -#else - return _mm_blendv_epi8(a, b, mask); -#endif -} - -CPPSPMD_FORCE_INLINE __m128 blendv_mask_ps(__m128 a, __m128 b, __m128 mask) -{ -#if CPPSPMD_SSE2 - // We know it's a mask, so we can just emulate the blend. - return _mm_or_ps(_mm_and_ps(mask, b), _mm_andnot_ps(mask, a)); -#else - return _mm_blendv_ps(a, b, mask); -#endif -} - -CPPSPMD_FORCE_INLINE __m128 blendv_ps(__m128 a, __m128 b, __m128 mask) -{ -#if CPPSPMD_SSE2 - // Input is not a mask, but MSB bits - so emulate _mm_blendv_ps() by replicating bit 31. - mask = _mm_castsi128_ps(_mm_srai_epi32(_mm_castps_si128(mask), 31)); - return _mm_or_ps(_mm_and_ps(mask, b), _mm_andnot_ps(mask, a)); -#else - return _mm_blendv_ps(a, b, mask); -#endif -} - -CPPSPMD_FORCE_INLINE __m128i blendv_mask_epi32(__m128i a, __m128i b, __m128i mask) -{ - return _mm_castps_si128(blendv_mask_ps(_mm_castsi128_ps(a), _mm_castsi128_ps(b), _mm_castsi128_ps(mask))); -} - -CPPSPMD_FORCE_INLINE __m128i blendv_epi32(__m128i a, __m128i b, __m128i mask) -{ - return _mm_castps_si128(blendv_ps(_mm_castsi128_ps(a), _mm_castsi128_ps(b), _mm_castsi128_ps(mask))); -} - -#if CPPSPMD_SSE2 -CPPSPMD_FORCE_INLINE int extract_x(const __m128i& vec) { return _mm_cvtsi128_si32(vec); } -CPPSPMD_FORCE_INLINE int extract_y(const __m128i& vec) { return _mm_cvtsi128_si32(_mm_shuffle_epi32(vec, 0x55)); } -CPPSPMD_FORCE_INLINE int extract_z(const __m128i& vec) { return _mm_cvtsi128_si32(_mm_shuffle_epi32(vec, 0xAA)); } -CPPSPMD_FORCE_INLINE int extract_w(const __m128i& vec) { return _mm_cvtsi128_si32(_mm_shuffle_epi32(vec, 0xFF)); } - -// Returns float bits as int, to emulate _mm_extract_ps() -CPPSPMD_FORCE_INLINE int extract_ps_x(const __m128& vec) { float f = _mm_cvtss_f32(vec); return *(const int*)&f; } -CPPSPMD_FORCE_INLINE int extract_ps_y(const __m128& vec) { float f = _mm_cvtss_f32(_mm_shuffle_ps(vec, vec, 0x55)); return *(const int*)&f; } -CPPSPMD_FORCE_INLINE int extract_ps_z(const __m128& vec) { float f = _mm_cvtss_f32(_mm_shuffle_ps(vec, vec, 0xAA)); return *(const int*)&f; } -CPPSPMD_FORCE_INLINE int extract_ps_w(const __m128& vec) { float f = _mm_cvtss_f32(_mm_shuffle_ps(vec, vec, 0xFF)); return *(const int*)&f; } - -// Returns floats -CPPSPMD_FORCE_INLINE float extractf_ps_x(const __m128& vec) { return _mm_cvtss_f32(vec); } -CPPSPMD_FORCE_INLINE float extractf_ps_y(const __m128& vec) { return _mm_cvtss_f32(_mm_shuffle_ps(vec, vec, 0x55)); } -CPPSPMD_FORCE_INLINE float extractf_ps_z(const __m128& vec) { return _mm_cvtss_f32(_mm_shuffle_ps(vec, vec, 0xAA)); } -CPPSPMD_FORCE_INLINE float extractf_ps_w(const __m128& vec) { return _mm_cvtss_f32(_mm_shuffle_ps(vec, vec, 0xFF)); } -#else -CPPSPMD_FORCE_INLINE int extract_x(const __m128i& vec) { return _mm_extract_epi32(vec, 0); } -CPPSPMD_FORCE_INLINE int extract_y(const __m128i& vec) { return _mm_extract_epi32(vec, 1); } -CPPSPMD_FORCE_INLINE int extract_z(const __m128i& vec) { return _mm_extract_epi32(vec, 2); } -CPPSPMD_FORCE_INLINE int extract_w(const __m128i& vec) { return _mm_extract_epi32(vec, 3); } - -// Returns float bits as int -CPPSPMD_FORCE_INLINE int extract_ps_x(const __m128& vec) { return _mm_extract_ps(vec, 0); } -CPPSPMD_FORCE_INLINE int extract_ps_y(const __m128& vec) { return _mm_extract_ps(vec, 1); } -CPPSPMD_FORCE_INLINE int extract_ps_z(const __m128& vec) { return _mm_extract_ps(vec, 2); } -CPPSPMD_FORCE_INLINE int extract_ps_w(const __m128& vec) { return _mm_extract_ps(vec, 3); } - -// Returns floats -CPPSPMD_FORCE_INLINE float extractf_ps_x(const __m128& vec) { int v = extract_ps_x(vec); return *(const float*)&v; } -CPPSPMD_FORCE_INLINE float extractf_ps_y(const __m128& vec) { int v = extract_ps_y(vec); return *(const float*)&v; } -CPPSPMD_FORCE_INLINE float extractf_ps_z(const __m128& vec) { int v = extract_ps_z(vec); return *(const float*)&v; } -CPPSPMD_FORCE_INLINE float extractf_ps_w(const __m128& vec) { int v = extract_ps_w(vec); return *(const float*)&v; } -#endif - -#if CPPSPMD_SSE2 -CPPSPMD_FORCE_INLINE __m128i insert_x(const __m128i& vec, int v) { return _mm_insert_epi16(_mm_insert_epi16(vec, v, 0), (uint32_t)v >> 16U, 1); } -CPPSPMD_FORCE_INLINE __m128i insert_y(const __m128i& vec, int v) { return _mm_insert_epi16(_mm_insert_epi16(vec, v, 2), (uint32_t)v >> 16U, 3); } -CPPSPMD_FORCE_INLINE __m128i insert_z(const __m128i& vec, int v) { return _mm_insert_epi16(_mm_insert_epi16(vec, v, 4), (uint32_t)v >> 16U, 5); } -CPPSPMD_FORCE_INLINE __m128i insert_w(const __m128i& vec, int v) { return _mm_insert_epi16(_mm_insert_epi16(vec, v, 6), (uint32_t)v >> 16U, 7); } -#else -CPPSPMD_FORCE_INLINE __m128i insert_x(const __m128i& vec, int v) { return _mm_insert_epi32(vec, v, 0); } -CPPSPMD_FORCE_INLINE __m128i insert_y(const __m128i& vec, int v) { return _mm_insert_epi32(vec, v, 1); } -CPPSPMD_FORCE_INLINE __m128i insert_z(const __m128i& vec, int v) { return _mm_insert_epi32(vec, v, 2); } -CPPSPMD_FORCE_INLINE __m128i insert_w(const __m128i& vec, int v) { return _mm_insert_epi32(vec, v, 3); } -#endif - -#if CPPSPMD_SSE2 -inline __m128i shuffle_epi8(const __m128i& a, const __m128i& b) -{ - // Just emulate _mm_shuffle_epi8. This is very slow, but what else can we do? - CPPSPMD_ALIGN(16) uint8_t av[16]; - _mm_store_si128((__m128i*)av, a); - - CPPSPMD_ALIGN(16) uint8_t bvi[16]; - _mm_store_ps((float*)bvi, _mm_and_ps(_mm_castsi128_ps(b), _mm_castsi128_ps(_mm_set1_epi32(0x0F0F0F0F)))); - - CPPSPMD_ALIGN(16) uint8_t result[16]; - - result[0] = av[bvi[0]]; - result[1] = av[bvi[1]]; - result[2] = av[bvi[2]]; - result[3] = av[bvi[3]]; - - result[4] = av[bvi[4]]; - result[5] = av[bvi[5]]; - result[6] = av[bvi[6]]; - result[7] = av[bvi[7]]; - - result[8] = av[bvi[8]]; - result[9] = av[bvi[9]]; - result[10] = av[bvi[10]]; - result[11] = av[bvi[11]]; - - result[12] = av[bvi[12]]; - result[13] = av[bvi[13]]; - result[14] = av[bvi[14]]; - result[15] = av[bvi[15]]; - - return _mm_andnot_si128(_mm_cmplt_epi8(b, _mm_setzero_si128()), _mm_load_si128((__m128i*)result)); -} -#else -CPPSPMD_FORCE_INLINE __m128i shuffle_epi8(const __m128i& a, const __m128i& b) -{ - return _mm_shuffle_epi8(a, b); -} -#endif - -#if CPPSPMD_SSE2 -CPPSPMD_FORCE_INLINE __m128i min_epi32(__m128i a, __m128i b) -{ - return blendv_mask_epi32(b, a, _mm_cmplt_epi32(a, b)); -} -CPPSPMD_FORCE_INLINE __m128i max_epi32(__m128i a, __m128i b) -{ - return blendv_mask_epi32(b, a, _mm_cmpgt_epi32(a, b)); -} -CPPSPMD_FORCE_INLINE __m128i min_epu32(__m128i a, __m128i b) -{ - __m128i n = _mm_set1_epi32(0x80000000); - __m128i ac = _mm_add_epi32(a, n); - __m128i bc = _mm_add_epi32(b, n); - return blendv_mask_epi32(b, a, _mm_cmplt_epi32(ac, bc)); -} -CPPSPMD_FORCE_INLINE __m128i max_epu32(__m128i a, __m128i b) -{ - __m128i n = _mm_set1_epi32(0x80000000); - __m128i ac = _mm_add_epi32(a, n); - __m128i bc = _mm_add_epi32(b, n); - return blendv_mask_epi32(b, a, _mm_cmpgt_epi32(ac, bc)); -} -#else -CPPSPMD_FORCE_INLINE __m128i min_epi32(__m128i a, __m128i b) -{ - return _mm_min_epi32(a, b); -} -CPPSPMD_FORCE_INLINE __m128i max_epi32(__m128i a, __m128i b) -{ - return _mm_max_epi32(a, b); -} -CPPSPMD_FORCE_INLINE __m128i min_epu32(__m128i a, __m128i b) -{ - return _mm_min_epu32(a, b); -} -CPPSPMD_FORCE_INLINE __m128i max_epu32(__m128i a, __m128i b) -{ - return _mm_max_epu32(a, b); -} -#endif - -#if CPPSPMD_SSE2 -CPPSPMD_FORCE_INLINE __m128i abs_epi32(__m128i a) -{ - __m128i sign_mask = _mm_srai_epi32(a, 31); - return _mm_sub_epi32(_mm_castps_si128(_mm_xor_ps(_mm_castsi128_ps(a), _mm_castsi128_ps(sign_mask))), sign_mask); -} -#else -CPPSPMD_FORCE_INLINE __m128i abs_epi32(__m128i a) -{ - return _mm_abs_epi32(a); -} -#endif - -#if CPPSPMD_SSE2 -CPPSPMD_FORCE_INLINE __m128i mullo_epi32(__m128i a, __m128i b) -{ - __m128i tmp1 = _mm_mul_epu32(a, b); - __m128i tmp2 = _mm_mul_epu32(_mm_srli_si128(a, 4), _mm_srli_si128(b, 4)); - return _mm_unpacklo_epi32(_mm_shuffle_epi32(tmp1, _MM_SHUFFLE(0, 0, 2, 0)), _mm_shuffle_epi32(tmp2, _MM_SHUFFLE(0, 0, 2, 0))); -} -#else -CPPSPMD_FORCE_INLINE __m128i mullo_epi32(__m128i a, __m128i b) -{ - return _mm_mullo_epi32(a, b); -} -#endif - -CPPSPMD_FORCE_INLINE __m128i mulhi_epu32(__m128i a, __m128i b) -{ - __m128i tmp1 = _mm_mul_epu32(a, b); - __m128i tmp2 = _mm_mul_epu32(_mm_srli_si128(a, 4), _mm_srli_si128(b, 4)); - return _mm_unpacklo_epi32(_mm_shuffle_epi32(tmp1, _MM_SHUFFLE(0, 0, 3, 1)), _mm_shuffle_epi32(tmp2, _MM_SHUFFLE(0, 0, 3, 1))); -} - -#if CPPSPMD_SSE2 -inline __m128i load_rgba32(const void* p) -{ - __m128i xmm = _mm_cvtsi32_si128(*(const int*)p); - xmm = _mm_unpacklo_epi8(xmm, _mm_setzero_si128()); - xmm = _mm_unpacklo_epi16(xmm, _mm_setzero_si128()); - return xmm; -} -#else -inline __m128i load_rgba32(const void* p) -{ - return _mm_cvtepu8_epi32(_mm_castps_si128(_mm_load_ss((const float*)p))); -} -#endif - -inline void transpose4x4(__m128i& x, __m128i& y, __m128i& z, __m128i& w, const __m128i& r0, const __m128i& r1, const __m128i& r2, const __m128i& r3) -{ - __m128i t0 = _mm_unpacklo_epi32(r0, r1); - __m128i t1 = _mm_unpacklo_epi32(r2, r3); - __m128i t2 = _mm_unpackhi_epi32(r0, r1); - __m128i t3 = _mm_unpackhi_epi32(r2, r3); - x = _mm_unpacklo_epi64(t0, t1); - y = _mm_unpackhi_epi64(t0, t1); - z = _mm_unpacklo_epi64(t2, t3); - w = _mm_unpackhi_epi64(t2, t3); -} - -const uint32_t ALL_ON_MOVEMASK = 0xF; - -struct spmd_kernel -{ - struct vint; - struct lint; - struct vbool; - struct vfloat; - - typedef int int_t; - typedef vint vint_t; - typedef lint lint_t; - - // Exec mask - struct exec_mask - { - __m128i m_mask; - - exec_mask() = default; - - CPPSPMD_FORCE_INLINE explicit exec_mask(const vbool& b); - CPPSPMD_FORCE_INLINE explicit exec_mask(const __m128i& mask) : m_mask(mask) { } - - CPPSPMD_FORCE_INLINE void enable_lane(uint32_t lane) { m_mask = _mm_load_si128((const __m128i *)&g_lane_masks_128[lane][0]); } - - static CPPSPMD_FORCE_INLINE exec_mask all_on() { return exec_mask{ _mm_load_si128((const __m128i*)g_allones_128) }; } - static CPPSPMD_FORCE_INLINE exec_mask all_off() { return exec_mask{ _mm_setzero_si128() }; } - - CPPSPMD_FORCE_INLINE uint32_t get_movemask() const { return _mm_movemask_ps(_mm_castsi128_ps(m_mask)); } - }; - - friend CPPSPMD_FORCE_INLINE bool all(const exec_mask& e); - friend CPPSPMD_FORCE_INLINE bool any(const exec_mask& e); - - CPPSPMD_FORCE_INLINE bool spmd_all() const { return all(m_exec); } - CPPSPMD_FORCE_INLINE bool spmd_any() const { return any(m_exec); } - CPPSPMD_FORCE_INLINE bool spmd_none() { return !any(m_exec); } - - // true if cond is true for all active lanes - false if no active lanes - CPPSPMD_FORCE_INLINE bool spmd_all(const vbool& e) { uint32_t m = m_exec.get_movemask(); return (m != 0) && ((exec_mask(e) & m_exec).get_movemask() == m); } - // true if cond is true for any active lanes - CPPSPMD_FORCE_INLINE bool spmd_any(const vbool& e) { return (exec_mask(e) & m_exec).get_movemask() != 0; } - CPPSPMD_FORCE_INLINE bool spmd_none(const vbool& e) { return !spmd_any(e); } - - friend CPPSPMD_FORCE_INLINE exec_mask operator^ (const exec_mask& a, const exec_mask& b); - friend CPPSPMD_FORCE_INLINE exec_mask operator& (const exec_mask& a, const exec_mask& b); - friend CPPSPMD_FORCE_INLINE exec_mask operator| (const exec_mask& a, const exec_mask& b); - - exec_mask m_exec; - exec_mask m_kernel_exec; - exec_mask m_continue_mask; -#ifdef _DEBUG - bool m_in_loop; -#endif - - CPPSPMD_FORCE_INLINE uint32_t get_movemask() const { return m_exec.get_movemask(); } - - void init(const exec_mask& kernel_exec); - - // Varying bool - - struct vbool - { - __m128i m_value; - - vbool() = default; - - CPPSPMD_FORCE_INLINE vbool(bool value) : m_value(_mm_set1_epi32(value ? UINT32_MAX : 0)) { } - - CPPSPMD_FORCE_INLINE explicit vbool(const __m128i& value) : m_value(value) { } - - CPPSPMD_FORCE_INLINE explicit operator vfloat() const; - CPPSPMD_FORCE_INLINE explicit operator vint() const; - - private: - vbool& operator=(const vbool&); - }; - - friend vbool operator!(const vbool& v); - - CPPSPMD_FORCE_INLINE vbool& store(vbool& dst, const vbool& src) - { - dst.m_value = blendv_mask_epi32(dst.m_value, src.m_value, m_exec.m_mask); - return dst; - } - - CPPSPMD_FORCE_INLINE vbool& store_all(vbool& dst, const vbool& src) - { - dst.m_value = src.m_value; - return dst; - } - - // Varying float - struct vfloat - { - __m128 m_value; - - vfloat() = default; - - CPPSPMD_FORCE_INLINE explicit vfloat(const __m128& v) : m_value(v) { } - - CPPSPMD_FORCE_INLINE vfloat(float value) : m_value(_mm_set1_ps(value)) { } - - CPPSPMD_FORCE_INLINE explicit vfloat(int value) : m_value(_mm_set1_ps((float)value)) { } - - private: - vfloat& operator=(const vfloat&); - }; - - CPPSPMD_FORCE_INLINE vfloat& store(vfloat& dst, const vfloat& src) - { - dst.m_value = blendv_mask_ps(dst.m_value, src.m_value, _mm_castsi128_ps(m_exec.m_mask)); - return dst; - } - - CPPSPMD_FORCE_INLINE vfloat& store(vfloat&& dst, const vfloat& src) - { - dst.m_value = blendv_mask_ps(dst.m_value, src.m_value, _mm_castsi128_ps(m_exec.m_mask)); - return dst; - } - - CPPSPMD_FORCE_INLINE vfloat& store_all(vfloat& dst, const vfloat& src) - { - dst.m_value = src.m_value; - return dst; - } - - CPPSPMD_FORCE_INLINE vfloat& store_all(vfloat&& dst, const vfloat& src) - { - dst.m_value = src.m_value; - return dst; - } - - // Linear ref to floats - struct float_lref - { - float* m_pValue; - - private: - float_lref& operator=(const float_lref&); - }; - - CPPSPMD_FORCE_INLINE const float_lref& store(const float_lref& dst, const vfloat& src) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - if (mask == ALL_ON_MOVEMASK) - _mm_storeu_ps(dst.m_pValue, src.m_value); - else - _mm_storeu_ps(dst.m_pValue, blendv_mask_ps(_mm_loadu_ps(dst.m_pValue), src.m_value, _mm_castsi128_ps(m_exec.m_mask))); - return dst; - } - - CPPSPMD_FORCE_INLINE const float_lref& store(const float_lref&& dst, const vfloat& src) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - if (mask == ALL_ON_MOVEMASK) - _mm_storeu_ps(dst.m_pValue, src.m_value); - else - _mm_storeu_ps(dst.m_pValue, blendv_mask_ps(_mm_loadu_ps(dst.m_pValue), src.m_value, _mm_castsi128_ps(m_exec.m_mask))); - return dst; - } - - CPPSPMD_FORCE_INLINE const float_lref& store_all(const float_lref& dst, const vfloat& src) - { - _mm_storeu_ps(dst.m_pValue, src.m_value); - return dst; - } - - CPPSPMD_FORCE_INLINE const float_lref& store_all(const float_lref&& dst, const vfloat& src) - { - _mm_storeu_ps(dst.m_pValue, src.m_value); - return dst; - } - - CPPSPMD_FORCE_INLINE vfloat load(const float_lref& src) - { - return vfloat{ _mm_and_ps(_mm_loadu_ps(src.m_pValue), _mm_castsi128_ps(m_exec.m_mask)) }; - } - - // Varying ref to floats - struct float_vref - { - __m128i m_vindex; - float* m_pValue; - - private: - float_vref& operator=(const float_vref&); - }; - - // Varying ref to varying float - struct vfloat_vref - { - __m128i m_vindex; - vfloat* m_pValue; - - private: - vfloat_vref& operator=(const vfloat_vref&); - }; - - // Varying ref to varying int - struct vint_vref - { - __m128i m_vindex; - vint* m_pValue; - - private: - vint_vref& operator=(const vint_vref&); - }; - - CPPSPMD_FORCE_INLINE const float_vref& store(const float_vref& dst, const vfloat& src); - CPPSPMD_FORCE_INLINE const float_vref& store(const float_vref&& dst, const vfloat& src); - - CPPSPMD_FORCE_INLINE const float_vref& store_all(const float_vref& dst, const vfloat& src); - CPPSPMD_FORCE_INLINE const float_vref& store_all(const float_vref&& dst, const vfloat& src); - - CPPSPMD_FORCE_INLINE vfloat load(const float_vref& src) - { - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i *)vindex, src.m_vindex); - - CPPSPMD_ALIGN(16) float loaded[4]; - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - loaded[i] = src.m_pValue[vindex[i]]; - } - return vfloat{ _mm_and_ps(_mm_castsi128_ps(m_exec.m_mask), _mm_load_ps((const float*)loaded)) }; - } - - CPPSPMD_FORCE_INLINE vfloat load_all(const float_vref& src) - { - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i *)vindex, src.m_vindex); - - CPPSPMD_ALIGN(16) float loaded[4]; - - for (int i = 0; i < 4; i++) - loaded[i] = src.m_pValue[vindex[i]]; - return vfloat{ _mm_load_ps((const float*)loaded) }; - } - - // Linear ref to ints - struct int_lref - { - int* m_pValue; - - private: - int_lref& operator=(const int_lref&); - }; - - CPPSPMD_FORCE_INLINE const int_lref& store(const int_lref& dst, const vint& src) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - if (mask == ALL_ON_MOVEMASK) - { - _mm_storeu_si128((__m128i *)dst.m_pValue, src.m_value); - } - else - { - CPPSPMD_ALIGN(16) int stored[4]; - _mm_store_si128((__m128i *)stored, src.m_value); - - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - dst.m_pValue[i] = stored[i]; - } - } - return dst; - } - - CPPSPMD_FORCE_INLINE vint load(const int_lref& src) - { - __m128i v = _mm_loadu_si128((const __m128i*)src.m_pValue); - - v = _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(v), _mm_castsi128_ps(m_exec.m_mask))); - - return vint{ v }; - } - - // Linear ref to int16's - struct int16_lref - { - int16_t* m_pValue; - - private: - int16_lref& operator=(const int16_lref&); - }; - - CPPSPMD_FORCE_INLINE const int16_lref& store(const int16_lref& dst, const vint& src) - { - CPPSPMD_ALIGN(16) int stored[4]; - _mm_store_si128((__m128i *)stored, src.m_value); - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - dst.m_pValue[i] = static_cast(stored[i]); - } - return dst; - } - - CPPSPMD_FORCE_INLINE const int16_lref& store_all(const int16_lref& dst, const vint& src) - { - CPPSPMD_ALIGN(16) int stored[4]; - _mm_store_si128((__m128i *)stored, src.m_value); - - for (int i = 0; i < 4; i++) - dst.m_pValue[i] = static_cast(stored[i]); - return dst; - } - - CPPSPMD_FORCE_INLINE vint load(const int16_lref& src) - { - CPPSPMD_ALIGN(16) int values[4]; - - for (int i = 0; i < 4; i++) - values[i] = static_cast(src.m_pValue[i]); - - __m128i t = _mm_load_si128( (const __m128i *)values ); - - return vint{ _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps( t ), _mm_castsi128_ps(m_exec.m_mask))) }; - } - - CPPSPMD_FORCE_INLINE vint load_all(const int16_lref& src) - { - CPPSPMD_ALIGN(16) int values[4]; - - for (int i = 0; i < 4; i++) - values[i] = static_cast(src.m_pValue[i]); - - __m128i t = _mm_load_si128( (const __m128i *)values ); - - return vint{ t }; - } - - // Linear ref to constant ints - struct cint_lref - { - const int* m_pValue; - - private: - cint_lref& operator=(const cint_lref&); - }; - - CPPSPMD_FORCE_INLINE vint load(const cint_lref& src) - { - __m128i v = _mm_loadu_si128((const __m128i *)src.m_pValue); - v = _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(v), _mm_castsi128_ps(m_exec.m_mask))); - return vint{ v }; - } - - CPPSPMD_FORCE_INLINE vint load_all(const cint_lref& src) - { - return vint{ _mm_loadu_si128((const __m128i *)src.m_pValue) }; - } - - // Varying ref to ints - struct int_vref - { - __m128i m_vindex; - int* m_pValue; - - private: - int_vref& operator=(const int_vref&); - }; - - // Varying ref to constant ints - struct cint_vref - { - __m128i m_vindex; - const int* m_pValue; - - private: - cint_vref& operator=(const cint_vref&); - }; - - // Varying int - struct vint - { - __m128i m_value; - - vint() = default; - - CPPSPMD_FORCE_INLINE explicit vint(const __m128i& value) : m_value(value) { } - - CPPSPMD_FORCE_INLINE explicit vint(const lint &other) : m_value(other.m_value) { } - - CPPSPMD_FORCE_INLINE vint& operator=(const lint& other) { m_value = other.m_value; return *this; } - - CPPSPMD_FORCE_INLINE vint(int value) : m_value(_mm_set1_epi32(value)) { } - - CPPSPMD_FORCE_INLINE explicit vint(float value) : m_value(_mm_set1_epi32((int)value)) { } - - CPPSPMD_FORCE_INLINE explicit vint(const vfloat& other) : m_value(_mm_cvttps_epi32(other.m_value)) { } - - CPPSPMD_FORCE_INLINE explicit operator vbool() const - { - return vbool{ _mm_xor_si128( _mm_load_si128((const __m128i*)g_allones_128), _mm_cmpeq_epi32(m_value, _mm_setzero_si128())) }; - } - - CPPSPMD_FORCE_INLINE explicit operator vfloat() const - { - return vfloat{ _mm_cvtepi32_ps(m_value) }; - } - - CPPSPMD_FORCE_INLINE int_vref operator[](int* ptr) const - { - return int_vref{ m_value, ptr }; - } - - CPPSPMD_FORCE_INLINE cint_vref operator[](const int* ptr) const - { - return cint_vref{ m_value, ptr }; - } - - CPPSPMD_FORCE_INLINE float_vref operator[](float* ptr) const - { - return float_vref{ m_value, ptr }; - } - - CPPSPMD_FORCE_INLINE vfloat_vref operator[](vfloat* ptr) const - { - return vfloat_vref{ m_value, ptr }; - } - - CPPSPMD_FORCE_INLINE vint_vref operator[](vint* ptr) const - { - return vint_vref{ m_value, ptr }; - } - - private: - vint& operator=(const vint&); - }; - - // Load/store linear int - CPPSPMD_FORCE_INLINE void storeu_linear(int *pDst, const vint& src) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - if (mask == ALL_ON_MOVEMASK) - _mm_storeu_si128((__m128i *)pDst, src.m_value); - else - { - if (mask & 1) pDst[0] = extract_x(src.m_value); - if (mask & 2) pDst[1] = extract_y(src.m_value); - if (mask & 4) pDst[2] = extract_z(src.m_value); - if (mask & 8) pDst[3] = extract_w(src.m_value); - } - } - - CPPSPMD_FORCE_INLINE void storeu_linear_all(int *pDst, const vint& src) - { - _mm_storeu_si128((__m128i*)pDst, src.m_value); - } - - CPPSPMD_FORCE_INLINE void store_linear_all(int *pDst, const vint& src) - { - _mm_store_si128((__m128i*)pDst, src.m_value); - } - - CPPSPMD_FORCE_INLINE vint loadu_linear(const int *pSrc) - { - __m128i v = _mm_loadu_si128((const __m128i*)pSrc); - - v = _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(v), _mm_castsi128_ps(m_exec.m_mask))); - - return vint{ v }; - } - - CPPSPMD_FORCE_INLINE vint loadu_linear_all(const int *pSrc) - { - return vint{ _mm_loadu_si128((__m128i*)pSrc) }; - } - - CPPSPMD_FORCE_INLINE vint load_linear_all(const int *pSrc) - { - return vint{ _mm_load_si128((__m128i*)pSrc) }; - } - - // Load/store linear float - CPPSPMD_FORCE_INLINE void storeu_linear(float *pDst, const vfloat& src) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - if (mask == ALL_ON_MOVEMASK) - _mm_storeu_ps((float*)pDst, src.m_value); - else - { - int *pDstI = (int *)pDst; - if (mask & 1) pDstI[0] = extract_ps_x(src.m_value); - if (mask & 2) pDstI[1] = extract_ps_y(src.m_value); - if (mask & 4) pDstI[2] = extract_ps_z(src.m_value); - if (mask & 8) pDstI[3] = extract_ps_w(src.m_value); - } - } - - CPPSPMD_FORCE_INLINE void storeu_linear_all(float *pDst, const vfloat& src) - { - _mm_storeu_ps((float*)pDst, src.m_value); - } - - CPPSPMD_FORCE_INLINE void store_linear_all(float *pDst, const vfloat& src) - { - _mm_store_ps((float*)pDst, src.m_value); - } - - CPPSPMD_FORCE_INLINE vfloat loadu_linear(const float *pSrc) - { - __m128 v = _mm_loadu_ps((const float*)pSrc); - - v = _mm_and_ps(v, _mm_castsi128_ps(m_exec.m_mask)); - - return vfloat{ v }; - } - - CPPSPMD_FORCE_INLINE vfloat loadu_linear_all(const float *pSrc) - { - return vfloat{ _mm_loadu_ps((float*)pSrc) }; - } - - CPPSPMD_FORCE_INLINE vfloat load_linear_all(const float *pSrc) - { - return vfloat{ _mm_load_ps((float*)pSrc) }; - } - - CPPSPMD_FORCE_INLINE vint& store(vint& dst, const vint& src) - { - dst.m_value = blendv_mask_epi32(dst.m_value, src.m_value, m_exec.m_mask); - return dst; - } - - CPPSPMD_FORCE_INLINE const int_vref& store(const int_vref& dst, const vint& src) - { - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i*)vindex, dst.m_vindex); - - CPPSPMD_ALIGN(16) int stored[4]; - _mm_store_si128((__m128i*)stored, src.m_value); - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - dst.m_pValue[vindex[i]] = stored[i]; - } - return dst; - } - - CPPSPMD_FORCE_INLINE vint& store_all(vint& dst, const vint& src) - { - dst.m_value = src.m_value; - return dst; - } - - CPPSPMD_FORCE_INLINE const int_vref& store_all(const int_vref& dst, const vint& src) - { - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i*)vindex, dst.m_vindex); - - CPPSPMD_ALIGN(16) int stored[4]; - _mm_store_si128((__m128i*)stored, src.m_value); - - for (int i = 0; i < 4; i++) - dst.m_pValue[vindex[i]] = stored[i]; - - return dst; - } - - CPPSPMD_FORCE_INLINE vint load(const int_vref& src) - { - CPPSPMD_ALIGN(16) int values[4]; - - CPPSPMD_ALIGN(16) int indices[4]; - _mm_store_si128((__m128i *)indices, src.m_vindex); - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - values[i] = src.m_pValue[indices[i]]; - } - - return vint{ _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(m_exec.m_mask), _mm_load_ps((const float*)values))) }; - } - - CPPSPMD_FORCE_INLINE vint load_all(const int_vref& src) - { - CPPSPMD_ALIGN(16) int values[4]; - - CPPSPMD_ALIGN(16) int indices[4]; - _mm_store_si128((__m128i *)indices, src.m_vindex); - - for (int i = 0; i < 4; i++) - values[i] = src.m_pValue[indices[i]]; - - return vint{ _mm_castps_si128( _mm_load_ps((const float*)values)) }; - } - - CPPSPMD_FORCE_INLINE vint load(const cint_vref& src) - { - CPPSPMD_ALIGN(16) int values[4]; - - CPPSPMD_ALIGN(16) int indices[4]; - _mm_store_si128((__m128i *)indices, src.m_vindex); - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - values[i] = src.m_pValue[indices[i]]; - } - - return vint{ _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(m_exec.m_mask), _mm_load_ps((const float*)values))) }; - } - - CPPSPMD_FORCE_INLINE vint load_all(const cint_vref& src) - { - CPPSPMD_ALIGN(16) int values[4]; - - CPPSPMD_ALIGN(16) int indices[4]; - _mm_store_si128((__m128i *)indices, src.m_vindex); - - for (int i = 0; i < 4; i++) - values[i] = src.m_pValue[indices[i]]; - - return vint{ _mm_castps_si128( _mm_load_ps((const float*)values)) }; - } - - CPPSPMD_FORCE_INLINE vint load_bytes_all(const cint_vref& src) - { - __m128i v0_l; - - const uint8_t* pSrc = (const uint8_t*)src.m_pValue; - v0_l = insert_x(_mm_undefined_si128(), ((int*)(pSrc + extract_x(src.m_vindex)))[0]); - v0_l = insert_y(v0_l, ((int*)(pSrc + extract_y(src.m_vindex)))[0]); - v0_l = insert_z(v0_l, ((int*)(pSrc + extract_z(src.m_vindex)))[0]); - v0_l = insert_w(v0_l, ((int*)(pSrc + extract_w(src.m_vindex)))[0]); - - return vint{ v0_l }; - } - - CPPSPMD_FORCE_INLINE vint load_words_all(const cint_vref& src) - { - __m128i v0_l; - - const uint8_t* pSrc = (const uint8_t*)src.m_pValue; - v0_l = insert_x(_mm_undefined_si128(), ((int16_t*)(pSrc + 2 * extract_x(src.m_vindex)))[0]); - v0_l = insert_y(v0_l, ((int16_t*)(pSrc + 2 * extract_y(src.m_vindex)))[0]); - v0_l = insert_z(v0_l, ((int16_t*)(pSrc + 2 * extract_z(src.m_vindex)))[0]); - v0_l = insert_w(v0_l, ((int16_t*)(pSrc + 2 * extract_w(src.m_vindex)))[0]); - - return vint{ v0_l }; - } - - CPPSPMD_FORCE_INLINE void store_strided(int *pDst, uint32_t stride, const vint &v) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - - if (mask & 1) pDst[0] = extract_x(v.m_value); - if (mask & 2) pDst[stride] = extract_y(v.m_value); - if (mask & 4) pDst[stride*2] = extract_z(v.m_value); - if (mask & 8) pDst[stride*3] = extract_w(v.m_value); - } - - CPPSPMD_FORCE_INLINE void store_strided(float *pDstF, uint32_t stride, const vfloat &v) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - - if (mask & 1) ((int *)pDstF)[0] = extract_ps_x(v.m_value); - if (mask & 2) ((int *)pDstF)[stride] = extract_ps_y(v.m_value); - if (mask & 4) ((int *)pDstF)[stride*2] = extract_ps_z(v.m_value); - if (mask & 8) ((int *)pDstF)[stride*3] = extract_ps_w(v.m_value); - } - - CPPSPMD_FORCE_INLINE void store_all_strided(int *pDst, uint32_t stride, const vint &v) - { - pDst[0] = extract_x(v.m_value); - pDst[stride] = extract_y(v.m_value); - pDst[stride*2] = extract_z(v.m_value); - pDst[stride*3] = extract_w(v.m_value); - } - - CPPSPMD_FORCE_INLINE void store_all_strided(float *pDstF, uint32_t stride, const vfloat &v) - { - ((int *)pDstF)[0] = extract_ps_x(v.m_value); - ((int *)pDstF)[stride] = extract_ps_y(v.m_value); - ((int *)pDstF)[stride*2] = extract_ps_z(v.m_value); - ((int *)pDstF)[stride*3] = extract_ps_w(v.m_value); - } - - CPPSPMD_FORCE_INLINE vint load_strided(const int *pSrc, uint32_t stride) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - -#if CPPSPMD_SSE2 - CPPSPMD_ALIGN(16) int vals[4] = { 0, 0, 0, 0 }; - if (mask & 1) vals[0] = pSrc[0]; - if (mask & 2) vals[1] = pSrc[stride]; - if (mask & 4) vals[2] = pSrc[stride * 2]; - if (mask & 8) vals[3] = pSrc[stride * 3]; - return vint{ _mm_load_si128((__m128i*)vals) }; -#else - const float* pSrcF = (const float*)pSrc; - __m128 v = _mm_setzero_ps(); - if (mask & 1) v = _mm_load_ss(pSrcF); - if (mask & 2) v = _mm_insert_ps(v, _mm_load_ss(pSrcF + stride), 0x10); - if (mask & 4) v = _mm_insert_ps(v, _mm_load_ss(pSrcF + 2 * stride), 0x20); - if (mask & 8) v = _mm_insert_ps(v, _mm_load_ss(pSrcF + 3 * stride), 0x30); - return vint{ _mm_castps_si128(v) }; -#endif - } - - CPPSPMD_FORCE_INLINE vfloat load_strided(const float *pSrc, uint32_t stride) - { - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - -#if CPPSPMD_SSE2 - CPPSPMD_ALIGN(16) float vals[4] = { 0, 0, 0, 0 }; - if (mask & 1) vals[0] = pSrc[0]; - if (mask & 2) vals[1] = pSrc[stride]; - if (mask & 4) vals[2] = pSrc[stride * 2]; - if (mask & 8) vals[3] = pSrc[stride * 3]; - return vfloat{ _mm_load_ps(vals) }; -#else - __m128 v = _mm_setzero_ps(); - if (mask & 1) v = _mm_load_ss(pSrc); - if (mask & 2) v = _mm_insert_ps(v, _mm_load_ss(pSrc + stride), 0x10); - if (mask & 4) v = _mm_insert_ps(v, _mm_load_ss(pSrc + 2 * stride), 0x20); - if (mask & 8) v = _mm_insert_ps(v, _mm_load_ss(pSrc + 3 * stride), 0x30); - return vfloat{ v }; -#endif - } - - CPPSPMD_FORCE_INLINE vint load_all_strided(const int *pSrc, uint32_t stride) - { -#if CPPSPMD_SSE2 - CPPSPMD_ALIGN(16) int vals[4]; - vals[0] = pSrc[0]; - vals[1] = pSrc[stride]; - vals[2] = pSrc[stride * 2]; - vals[3] = pSrc[stride * 3]; - return vint{ _mm_load_si128((__m128i*)vals) }; -#else - const float* pSrcF = (const float*)pSrc; - __m128 v = _mm_load_ss(pSrcF); - v = _mm_insert_ps(v, _mm_load_ss(pSrcF + stride), 0x10); - v = _mm_insert_ps(v, _mm_load_ss(pSrcF + 2 * stride), 0x20); - v = _mm_insert_ps(v, _mm_load_ss(pSrcF + 3 * stride), 0x30); - return vint{ _mm_castps_si128(v) }; -#endif - } - - CPPSPMD_FORCE_INLINE vfloat load_all_strided(const float *pSrc, uint32_t stride) - { -#if CPPSPMD_SSE2 - CPPSPMD_ALIGN(16) float vals[4]; - vals[0] = pSrc[0]; - vals[1] = pSrc[stride]; - vals[2] = pSrc[stride * 2]; - vals[3] = pSrc[stride * 3]; - return vfloat{ _mm_load_ps(vals) }; -#else - __m128 v = _mm_load_ss(pSrc); - v = _mm_insert_ps(v, _mm_load_ss(pSrc + stride), 0x10); - v = _mm_insert_ps(v, _mm_load_ss(pSrc + 2 * stride), 0x20); - v = _mm_insert_ps(v, _mm_load_ss(pSrc + 3 * stride), 0x30); - return vfloat{ v }; -#endif - } - - CPPSPMD_FORCE_INLINE const vfloat_vref& store(const vfloat_vref& dst, const vfloat& src) - { - // TODO: There's surely a better way - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - - if (mask & 1) ((int *)(&dst.m_pValue[extract_x(dst.m_vindex)]))[0] = extract_x(_mm_castps_si128(src.m_value)); - if (mask & 2) ((int *)(&dst.m_pValue[extract_y(dst.m_vindex)]))[1] = extract_y(_mm_castps_si128(src.m_value)); - if (mask & 4) ((int *)(&dst.m_pValue[extract_z(dst.m_vindex)]))[2] = extract_z(_mm_castps_si128(src.m_value)); - if (mask & 8) ((int *)(&dst.m_pValue[extract_w(dst.m_vindex)]))[3] = extract_w(_mm_castps_si128(src.m_value)); - - return dst; - } - - CPPSPMD_FORCE_INLINE vfloat load(const vfloat_vref& src) - { - // TODO: There's surely a better way - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - - __m128i k = _mm_setzero_si128(); - - if (mask & 1) k = insert_x(k, ((int *)(&src.m_pValue[extract_x(src.m_vindex)]))[0]); - if (mask & 2) k = insert_y(k, ((int *)(&src.m_pValue[extract_y(src.m_vindex)]))[1]); - if (mask & 4) k = insert_z(k, ((int *)(&src.m_pValue[extract_z(src.m_vindex)]))[2]); - if (mask & 8) k = insert_w(k, ((int *)(&src.m_pValue[extract_w(src.m_vindex)]))[3]); - - return vfloat{ _mm_castsi128_ps(k) }; - } - - CPPSPMD_FORCE_INLINE const vint_vref& store(const vint_vref& dst, const vint& src) - { - // TODO: There's surely a better way - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - - if (mask & 1) ((int *)(&dst.m_pValue[extract_x(dst.m_vindex)]))[0] = extract_x(src.m_value); - if (mask & 2) ((int *)(&dst.m_pValue[extract_y(dst.m_vindex)]))[1] = extract_y(src.m_value); - if (mask & 4) ((int *)(&dst.m_pValue[extract_z(dst.m_vindex)]))[2] = extract_z(src.m_value); - if (mask & 8) ((int *)(&dst.m_pValue[extract_w(dst.m_vindex)]))[3] = extract_w(src.m_value); - - return dst; - } - - CPPSPMD_FORCE_INLINE vint load(const vint_vref& src) - { - // TODO: There's surely a better way - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - - __m128i k = _mm_setzero_si128(); - - if (mask & 1) k = insert_x(k, ((int *)(&src.m_pValue[extract_x(src.m_vindex)]))[0]); - if (mask & 2) k = insert_y(k, ((int *)(&src.m_pValue[extract_y(src.m_vindex)]))[1]); - if (mask & 4) k = insert_z(k, ((int *)(&src.m_pValue[extract_z(src.m_vindex)]))[2]); - if (mask & 8) k = insert_w(k, ((int *)(&src.m_pValue[extract_w(src.m_vindex)]))[3]); - - return vint{ k }; - } - - CPPSPMD_FORCE_INLINE vint load_all(const vint_vref& src) - { - // TODO: There's surely a better way - __m128i k; - - k = insert_x(k, ((int*)(&src.m_pValue[extract_x(src.m_vindex)]))[0]); - k = insert_y(k, ((int*)(&src.m_pValue[extract_y(src.m_vindex)]))[1]); - k = insert_z(k, ((int*)(&src.m_pValue[extract_z(src.m_vindex)]))[2]); - k = insert_w(k, ((int*)(&src.m_pValue[extract_w(src.m_vindex)]))[3]); - - return vint{ k }; - } - - // Linear integer - struct lint - { - __m128i m_value; - - CPPSPMD_FORCE_INLINE explicit lint(__m128i value) - : m_value(value) - { } - - CPPSPMD_FORCE_INLINE explicit operator vfloat() const - { - return vfloat{ _mm_cvtepi32_ps(m_value) }; - } - - CPPSPMD_FORCE_INLINE explicit operator vint() const - { - return vint{ m_value }; - } - - CPPSPMD_FORCE_INLINE int get_first_value() const - { - return _mm_cvtsi128_si32(m_value); - } - - CPPSPMD_FORCE_INLINE float_lref operator[](float* ptr) const - { - return float_lref{ ptr + get_first_value() }; - } - - CPPSPMD_FORCE_INLINE int_lref operator[](int* ptr) const - { - return int_lref{ ptr + get_first_value() }; - } - - CPPSPMD_FORCE_INLINE int16_lref operator[](int16_t* ptr) const - { - return int16_lref{ ptr + get_first_value() }; - } - - CPPSPMD_FORCE_INLINE cint_lref operator[](const int* ptr) const - { - return cint_lref{ ptr + get_first_value() }; - } - - private: - lint& operator=(const lint&); - }; - - CPPSPMD_FORCE_INLINE lint& store_all(lint& dst, const lint& src) - { - dst.m_value = src.m_value; - return dst; - } - - const lint program_index = lint{ _mm_set_epi32( 3, 2, 1, 0 ) }; - - // SPMD condition helpers - - template - CPPSPMD_FORCE_INLINE void spmd_if(const vbool& cond, const IfBody& ifBody); - - CPPSPMD_FORCE_INLINE void spmd_if_break(const vbool& cond); - - // No breaks, continues, etc. allowed - template - CPPSPMD_FORCE_INLINE void spmd_sif(const vbool& cond, const IfBody& ifBody); - - // No breaks, continues, etc. allowed - template - CPPSPMD_FORCE_INLINE void spmd_sifelse(const vbool& cond, const IfBody& ifBody, const ElseBody &elseBody); - - template - CPPSPMD_FORCE_INLINE void spmd_ifelse(const vbool& cond, const IfBody& ifBody, const ElseBody& elseBody); - - template - CPPSPMD_FORCE_INLINE void spmd_while(const WhileCondBody& whileCondBody, const WhileBody& whileBody); - - template - CPPSPMD_FORCE_INLINE void spmd_for(const ForInitBody& forInitBody, const ForCondBody& forCondBody, const ForIncrBody& forIncrBody, const ForBody& forBody); - - template - CPPSPMD_FORCE_INLINE void spmd_foreach(int begin, int end, const ForeachBody& foreachBody); - -#ifdef _DEBUG - CPPSPMD_FORCE_INLINE void check_masks(); -#else - CPPSPMD_FORCE_INLINE void check_masks() { } -#endif - - CPPSPMD_FORCE_INLINE void spmd_break(); - CPPSPMD_FORCE_INLINE void spmd_continue(); - - CPPSPMD_FORCE_INLINE void spmd_return(); - - template - CPPSPMD_FORCE_INLINE void spmd_unmasked(const UnmaskedBody& unmaskedBody); - - template - //CPPSPMD_FORCE_INLINE decltype(auto) spmd_call(Args&&... args); - CPPSPMD_FORCE_INLINE void spmd_call(Args&&... args); - - CPPSPMD_FORCE_INLINE void swap(vint &a, vint &b) { vint temp = a; store(a, b); store(b, temp); } - CPPSPMD_FORCE_INLINE void swap(vfloat &a, vfloat &b) { vfloat temp = a; store(a, b); store(b, temp); } - CPPSPMD_FORCE_INLINE void swap(vbool &a, vbool &b) { vbool temp = a; store(a, b); store(b, temp); } - - CPPSPMD_FORCE_INLINE float reduce_add(vfloat v) - { - __m128 k3210 = _mm_castsi128_ps(blendv_mask_epi32(_mm_setzero_si128(), _mm_castps_si128(v.m_value), m_exec.m_mask)); - __m128 temp = _mm_add_ps(_mm_shuffle_ps(k3210, k3210, _MM_SHUFFLE(0, 1, 2, 3)), k3210); - return _mm_cvtss_f32(_mm_add_ss(_mm_movehl_ps(temp, temp), temp)); - } - - CPPSPMD_FORCE_INLINE int reduce_add(vint v) - { - __m128i k3210 = blendv_mask_epi32(_mm_setzero_si128(), v.m_value, m_exec.m_mask); - __m128i temp = _mm_add_epi32(_mm_shuffle_epi32(k3210, _MM_SHUFFLE(0, 1, 2, 3)), k3210); - return extract_x(_mm_add_epi32(_mm_castps_si128(_mm_movehl_ps(_mm_castsi128_ps(temp), _mm_castsi128_ps(temp))), temp)); - } - - #include "cppspmd_math_declares.h" - -}; // struct spmd_kernel - -using exec_mask = spmd_kernel::exec_mask; -using vint = spmd_kernel::vint; -using int_lref = spmd_kernel::int_lref; -using cint_vref = spmd_kernel::cint_vref; -using cint_lref = spmd_kernel::cint_lref; -using int_vref = spmd_kernel::int_vref; -using lint = spmd_kernel::lint; -using vbool = spmd_kernel::vbool; -using vfloat = spmd_kernel::vfloat; -using float_lref = spmd_kernel::float_lref; -using float_vref = spmd_kernel::float_vref; -using vfloat_vref = spmd_kernel::vfloat_vref; -using vint_vref = spmd_kernel::vint_vref; - -CPPSPMD_FORCE_INLINE spmd_kernel::vbool::operator vfloat() const -{ - return vfloat { _mm_and_ps( _mm_castsi128_ps(m_value), *(const __m128 *)g_onef_128 ) }; -} - -// Returns UINT32_MAX's for true, 0 for false. (Should it return 1's?) -CPPSPMD_FORCE_INLINE spmd_kernel::vbool::operator vint() const -{ - return vint { m_value }; -} - -CPPSPMD_FORCE_INLINE vbool operator!(const vbool& v) -{ - return vbool{ _mm_castps_si128(_mm_xor_ps(_mm_load_ps((const float*)g_allones_128), _mm_castsi128_ps(v.m_value))) }; -} - -CPPSPMD_FORCE_INLINE exec_mask::exec_mask(const vbool& b) { m_mask = b.m_value; } - -CPPSPMD_FORCE_INLINE exec_mask operator^(const exec_mask& a, const exec_mask& b) { return exec_mask{ _mm_xor_si128(a.m_mask, b.m_mask) }; } -CPPSPMD_FORCE_INLINE exec_mask operator&(const exec_mask& a, const exec_mask& b) { return exec_mask{ _mm_and_si128(a.m_mask, b.m_mask) }; } -CPPSPMD_FORCE_INLINE exec_mask operator|(const exec_mask& a, const exec_mask& b) { return exec_mask{ _mm_or_si128(a.m_mask, b.m_mask) }; } - -CPPSPMD_FORCE_INLINE bool all(const exec_mask& e) { return _mm_movemask_ps(_mm_castsi128_ps(e.m_mask)) == ALL_ON_MOVEMASK; } -CPPSPMD_FORCE_INLINE bool any(const exec_mask& e) { return _mm_movemask_ps(_mm_castsi128_ps(e.m_mask)) != 0; } - -// Bad pattern - doesn't factor in the current exec mask. Prefer spmd_any() instead. -CPPSPMD_FORCE_INLINE bool all(const vbool& e) { return _mm_movemask_ps(_mm_castsi128_ps(e.m_value)) == ALL_ON_MOVEMASK; } -CPPSPMD_FORCE_INLINE bool any(const vbool& e) { return _mm_movemask_ps(_mm_castsi128_ps(e.m_value)) != 0; } - -CPPSPMD_FORCE_INLINE exec_mask andnot(const exec_mask& a, const exec_mask& b) { return exec_mask{ _mm_andnot_si128(a.m_mask, b.m_mask) }; } -CPPSPMD_FORCE_INLINE vbool operator||(const vbool& a, const vbool& b) { return vbool{ _mm_or_si128(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator&&(const vbool& a, const vbool& b) { return vbool{ _mm_and_si128(a.m_value, b.m_value) }; } - -CPPSPMD_FORCE_INLINE vfloat operator+(const vfloat& a, const vfloat& b) { return vfloat{ _mm_add_ps(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat operator-(const vfloat& a, const vfloat& b) { return vfloat{ _mm_sub_ps(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat operator+(float a, const vfloat& b) { return vfloat(a) + b; } -CPPSPMD_FORCE_INLINE vfloat operator+(const vfloat& a, float b) { return a + vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator-(const vfloat& a, const vint& b) { return a - vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator-(const vint& a, const vfloat& b) { return vfloat(a) - b; } -CPPSPMD_FORCE_INLINE vfloat operator-(const vfloat& a, int b) { return a - vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator-(int a, const vfloat& b) { return vfloat(a) - b; } -CPPSPMD_FORCE_INLINE vfloat operator-(const vfloat& a, float b) { return a - vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator-(float a, const vfloat& b) { return vfloat(a) - b; } - -CPPSPMD_FORCE_INLINE vfloat operator*(const vfloat& a, const vfloat& b) { return vfloat{ _mm_mul_ps(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat operator*(const vfloat& a, float b) { return a * vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator*(float a, const vfloat& b) { return vfloat(a) * b; } -CPPSPMD_FORCE_INLINE vfloat operator*(const vfloat& a, int b) { return a * vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator*(int a, const vfloat& b) { return vfloat(a) * b; } - -CPPSPMD_FORCE_INLINE vfloat operator/(const vfloat& a, const vfloat& b) { return vfloat{ _mm_div_ps(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat operator/(const vfloat& a, int b) { return a / vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator/(int a, const vfloat& b) { return vfloat(a) / b; } -CPPSPMD_FORCE_INLINE vfloat operator/(const vfloat& a, float b) { return a / vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator/(float a, const vfloat& b) { return vfloat(a) / b; } -CPPSPMD_FORCE_INLINE vfloat operator-(const vfloat& v) { return vfloat{ _mm_sub_ps(_mm_xor_ps(v.m_value, v.m_value), v.m_value) }; } - -CPPSPMD_FORCE_INLINE vbool operator==(const vfloat& a, const vfloat& b) { return vbool{ _mm_castps_si128(_mm_cmpeq_ps(a.m_value, b.m_value)) }; } -CPPSPMD_FORCE_INLINE vbool operator==(const vfloat& a, float b) { return a == vfloat(b); } - -CPPSPMD_FORCE_INLINE vbool operator!=(const vfloat& a, const vfloat& b) { return !vbool{ _mm_castps_si128(_mm_cmpeq_ps(a.m_value, b.m_value)) }; } -CPPSPMD_FORCE_INLINE vbool operator!=(const vfloat& a, float b) { return a != vfloat(b); } - -CPPSPMD_FORCE_INLINE vbool operator<(const vfloat& a, const vfloat& b) { return vbool{ _mm_castps_si128(_mm_cmplt_ps(a.m_value, b.m_value)) }; } -CPPSPMD_FORCE_INLINE vbool operator<(const vfloat& a, float b) { return a < vfloat(b); } - -CPPSPMD_FORCE_INLINE vbool operator>(const vfloat& a, const vfloat& b) { return vbool{ _mm_castps_si128(_mm_cmpgt_ps(a.m_value, b.m_value)) }; } -CPPSPMD_FORCE_INLINE vbool operator>(const vfloat& a, float b) { return a > vfloat(b); } - -CPPSPMD_FORCE_INLINE vbool operator<=(const vfloat& a, const vfloat& b) { return vbool{ _mm_castps_si128(_mm_cmple_ps(a.m_value, b.m_value)) }; } -CPPSPMD_FORCE_INLINE vbool operator<=(const vfloat& a, float b) { return a <= vfloat(b); } - -CPPSPMD_FORCE_INLINE vbool operator>=(const vfloat& a, const vfloat& b) { return vbool{ _mm_castps_si128(_mm_cmpge_ps(a.m_value, b.m_value)) }; } -CPPSPMD_FORCE_INLINE vbool operator>=(const vfloat& a, float b) { return a >= vfloat(b); } - -CPPSPMD_FORCE_INLINE vfloat spmd_ternaryf(const vbool& cond, const vfloat& a, const vfloat& b) { return vfloat{ blendv_mask_ps(b.m_value, a.m_value, _mm_castsi128_ps(cond.m_value)) }; } -CPPSPMD_FORCE_INLINE vint spmd_ternaryi(const vbool& cond, const vint& a, const vint& b) { return vint{ blendv_mask_epi32(b.m_value, a.m_value, cond.m_value) }; } - -CPPSPMD_FORCE_INLINE vfloat sqrt(const vfloat& v) { return vfloat{ _mm_sqrt_ps(v.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat abs(const vfloat& v) { return vfloat{ _mm_andnot_ps(_mm_set1_ps(-0.0f), v.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat max(const vfloat& a, const vfloat& b) { return vfloat{ _mm_max_ps(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat min(const vfloat& a, const vfloat& b) { return vfloat{ _mm_min_ps(a.m_value, b.m_value) }; } - -#if CPPSPMD_SSE2 -CPPSPMD_FORCE_INLINE vfloat round_truncate(const vfloat& a) -{ - __m128i abs_a = _mm_and_si128(_mm_castps_si128(a.m_value), _mm_set1_epi32(0x7FFFFFFFU) ); - __m128i has_fractional = _mm_cmplt_epi32(abs_a, _mm_castps_si128(_mm_set1_ps(8388608.0f))); - - __m128i ai = _mm_cvttps_epi32(a.m_value); - - __m128 af = _mm_cvtepi32_ps(ai); - return vfloat{ blendv_mask_ps(a.m_value, af, _mm_castsi128_ps(has_fractional)) }; -} - -CPPSPMD_FORCE_INLINE vfloat floor(const vfloat& a) -{ - __m128i abs_a = _mm_and_si128(_mm_castps_si128(a.m_value), _mm_set1_epi32(0x7FFFFFFFU)); - __m128i has_fractional = _mm_cmplt_epi32(abs_a, _mm_castps_si128(_mm_set1_ps(8388608.0f))); - - __m128i ai = _mm_cvtps_epi32(a.m_value); - __m128 af = _mm_cvtepi32_ps(ai); - __m128 changed = _mm_cvtepi32_ps(_mm_castps_si128(_mm_cmpgt_ps(af, a.m_value))); - - af = _mm_add_ps(af, changed); - - return vfloat{ blendv_mask_ps(a.m_value, af, _mm_castsi128_ps(has_fractional)) }; -} - -CPPSPMD_FORCE_INLINE vfloat ceil(const vfloat& a) -{ - __m128i abs_a = _mm_and_si128(_mm_castps_si128(a.m_value), _mm_set1_epi32(0x7FFFFFFFU)); - __m128i has_fractional = _mm_cmplt_epi32(abs_a, _mm_castps_si128(_mm_set1_ps(8388608.0f))); - - __m128i ai = _mm_cvtps_epi32(a.m_value); - __m128 af = _mm_cvtepi32_ps(ai); - __m128 changed = _mm_cvtepi32_ps(_mm_castps_si128(_mm_cmplt_ps(af, a.m_value))); - - af = _mm_sub_ps(af, changed); - - return vfloat{ blendv_mask_ps(a.m_value, af, _mm_castsi128_ps(has_fractional)) }; -} - -// We need to disable unsafe math optimizations for the key operations used for rounding to nearest. -// I wish there was a better way. -#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !defined(__clang__) -inline __m128 add_sub(__m128 a, __m128 b) __attribute__((optimize("-fno-unsafe-math-optimizations"))) -#elif defined(__clang__) -inline __m128 add_sub(__m128 a, __m128 b) __attribute__((optnone)) -#elif defined (_MSC_VER) -#pragma float_control(push) -#pragma float_control(precise, on) -inline __m128 add_sub(__m128 a, __m128 b) -#else -inline __m128 add_sub(__m128 a, __m128 b) -#endif -{ - return _mm_sub_ps(_mm_add_ps(a, b), b); -} - -#if defined (_MSC_VER) -#pragma float_control(pop) -#endif - -CPPSPMD_FORCE_INLINE vfloat round_nearest(const vfloat& a) -{ - __m128i no_fract_fp_bits = _mm_castps_si128(_mm_set1_ps(8388608.0f)); - - __m128i sign_a = _mm_and_si128(_mm_castps_si128(a.m_value), _mm_set1_epi32(0x80000000U)); - __m128 force_int = _mm_castsi128_ps(_mm_or_si128(no_fract_fp_bits, sign_a)); - - // Can't use individual _mm_add_ps/_mm_sub_ps - this will be optimized out with /fp:fast by clang and probably other compilers. - //__m128 temp1 = _mm_add_ps(a.m_value, force_int); - //__m128 temp2 = _mm_sub_ps(temp1, force_int); - __m128 temp2 = add_sub(a.m_value, force_int); - - __m128i abs_a = _mm_and_si128(_mm_castps_si128(a.m_value), _mm_set1_epi32(0x7FFFFFFFU)); - __m128i has_fractional = _mm_cmplt_epi32(abs_a, no_fract_fp_bits); - return vfloat{ blendv_mask_ps(a.m_value, temp2, _mm_castsi128_ps(has_fractional)) }; -} - -#else -CPPSPMD_FORCE_INLINE vfloat floor(const vfloat& v) { return vfloat{ _mm_floor_ps(v.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat ceil(const vfloat& a) { return vfloat{ _mm_ceil_ps(a.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat round_nearest(const vfloat &a) { return vfloat{ _mm_round_ps(a.m_value, _MM_FROUND_TO_NEAREST_INT | _MM_FROUND_NO_EXC ) }; } -CPPSPMD_FORCE_INLINE vfloat round_truncate(const vfloat &a) { return vfloat{ _mm_round_ps(a.m_value, _MM_FROUND_TO_ZERO | _MM_FROUND_NO_EXC ) }; } -#endif - -CPPSPMD_FORCE_INLINE vfloat frac(const vfloat& a) { return a - floor(a); } -CPPSPMD_FORCE_INLINE vfloat fmod(vfloat a, vfloat b) { vfloat c = frac(abs(a / b)) * abs(b); return spmd_ternaryf(a < 0, -c, c); } -CPPSPMD_FORCE_INLINE vfloat sign(const vfloat& a) { return spmd_ternaryf(a < 0.0f, 1.0f, 1.0f); } - -CPPSPMD_FORCE_INLINE vint max(const vint& a, const vint& b) { return vint{ max_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint min(const vint& a, const vint& b) { return vint{ min_epi32(a.m_value, b.m_value) }; } - -CPPSPMD_FORCE_INLINE vint maxu(const vint& a, const vint& b) { return vint{ max_epu32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint minu(const vint& a, const vint& b) { return vint{ min_epu32(a.m_value, b.m_value) }; } - -CPPSPMD_FORCE_INLINE vint abs(const vint& v) { return vint{ abs_epi32(v.m_value) }; } - -CPPSPMD_FORCE_INLINE vint byteswap(const vint& v) { return vint{ shuffle_epi8(v.m_value, _mm_set_epi8(12, 13, 14, 15, 8, 9, 10, 11, 4, 5, 6, 7, 0, 1, 2, 3)) }; } - -CPPSPMD_FORCE_INLINE vint cast_vfloat_to_vint(const vfloat& v) { return vint{ _mm_castps_si128(v.m_value) }; } -CPPSPMD_FORCE_INLINE vfloat cast_vint_to_vfloat(const vint& v) { return vfloat{ _mm_castsi128_ps(v.m_value) }; } - -CPPSPMD_FORCE_INLINE vfloat clamp(const vfloat& v, const vfloat& a, const vfloat& b) -{ - return vfloat{ _mm_min_ps(b.m_value, _mm_max_ps(v.m_value, a.m_value) ) }; -} - -CPPSPMD_FORCE_INLINE vint clamp(const vint& v, const vint& a, const vint& b) -{ - return vint{ min_epi32(b.m_value, max_epi32(v.m_value, a.m_value) ) }; -} - -CPPSPMD_FORCE_INLINE vfloat vfma(const vfloat& a, const vfloat& b, const vfloat& c) -{ - return vfloat{ _mm_add_ps(_mm_mul_ps(a.m_value, b.m_value), c.m_value) }; -} - -CPPSPMD_FORCE_INLINE vfloat vfms(const vfloat& a, const vfloat& b, const vfloat& c) -{ - return vfloat{ _mm_sub_ps(_mm_mul_ps(a.m_value, b.m_value), c.m_value) }; -} - -CPPSPMD_FORCE_INLINE vfloat vfnma(const vfloat& a, const vfloat& b, const vfloat& c) -{ - return vfloat{ _mm_sub_ps(c.m_value, _mm_mul_ps(a.m_value, b.m_value)) }; -} - -CPPSPMD_FORCE_INLINE vfloat vfnms(const vfloat& a, const vfloat& b, const vfloat& c) -{ - return vfloat{ _mm_sub_ps(_mm_sub_ps(_mm_xor_ps(a.m_value, a.m_value), _mm_mul_ps(a.m_value, b.m_value)), c.m_value) }; -} - -CPPSPMD_FORCE_INLINE vfloat lerp(const vfloat &x, const vfloat &y, const vfloat &s) { return vfma(y - x, s, x); } - -CPPSPMD_FORCE_INLINE lint operator+(int a, const lint& b) { return lint{ _mm_add_epi32(_mm_set1_epi32(a), b.m_value) }; } -CPPSPMD_FORCE_INLINE lint operator+(const lint& a, int b) { return lint{ _mm_add_epi32(a.m_value, _mm_set1_epi32(b)) }; } -CPPSPMD_FORCE_INLINE vfloat operator+(float a, const lint& b) { return vfloat(a) + vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator+(const lint& a, float b) { return vfloat(a) + vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator*(const lint& a, float b) { return vfloat(a) * vfloat(b); } -CPPSPMD_FORCE_INLINE vfloat operator*(float b, const lint& a) { return vfloat(a) * vfloat(b); } - -CPPSPMD_FORCE_INLINE vint operator&(const vint& a, const vint& b) { return vint{ _mm_and_si128(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator&(const vint& a, int b) { return a & vint(b); } -CPPSPMD_FORCE_INLINE vint andnot(const vint& a, const vint& b) { return vint{ _mm_andnot_si128(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator|(const vint& a, const vint& b) { return vint{ _mm_or_si128(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator|(const vint& a, int b) { return a | vint(b); } -CPPSPMD_FORCE_INLINE vint operator^(const vint& a, const vint& b) { return vint{ _mm_xor_si128(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator^(const vint& a, int b) { return a ^ vint(b); } -CPPSPMD_FORCE_INLINE vbool operator==(const vint& a, const vint& b) { return vbool{ _mm_cmpeq_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator!=(const vint& a, const vint& b) { return !vbool{ _mm_cmpeq_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator<(const vint& a, const vint& b) { return vbool{ _mm_cmpgt_epi32(b.m_value, a.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator<=(const vint& a, const vint& b) { return !vbool{ _mm_cmpgt_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator>=(const vint& a, const vint& b) { return !vbool{ _mm_cmpgt_epi32(b.m_value, a.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator>(const vint& a, const vint& b) { return vbool{ _mm_cmpgt_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator+(const vint& a, const vint& b) { return vint{ _mm_add_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator-(const vint& a, const vint& b) { return vint{ _mm_sub_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator+(const vint& a, int b) { return a + vint(b); } -CPPSPMD_FORCE_INLINE vint operator-(const vint& a, int b) { return a - vint(b); } -CPPSPMD_FORCE_INLINE vint operator+(int a, const vint& b) { return vint(a) + b; } -CPPSPMD_FORCE_INLINE vint operator-(int a, const vint& b) { return vint(a) - b; } -CPPSPMD_FORCE_INLINE vint operator*(const vint& a, const vint& b) { return vint{ mullo_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint operator*(const vint& a, int b) { return a * vint(b); } -CPPSPMD_FORCE_INLINE vint operator*(int a, const vint& b) { return vint(a) * b; } - -CPPSPMD_FORCE_INLINE vint mulhiu(const vint& a, const vint& b) { return vint{ mulhi_epu32(a.m_value, b.m_value) }; } - -CPPSPMD_FORCE_INLINE vint operator-(const vint& v) { return vint{ _mm_sub_epi32(_mm_setzero_si128(), v.m_value) }; } - -CPPSPMD_FORCE_INLINE vint operator~(const vint& a) { return vint{ -a - 1 }; } - -// A few of these break the lane-based abstraction model. They are supported in SSE2, so it makes sense to support them and let the user figure it out. -CPPSPMD_FORCE_INLINE vint adds_epu8(const vint& a, const vint& b) { return vint{ _mm_adds_epu8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint subs_epu8(const vint& a, const vint& b) { return vint{ _mm_subs_epu8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint avg_epu8(const vint & a, const vint & b) { return vint{ _mm_avg_epu8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint max_epu8(const vint& a, const vint& b) { return vint{ _mm_max_epu8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint min_epu8(const vint& a, const vint& b) { return vint{ _mm_min_epu8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint sad_epu8(const vint& a, const vint& b) { return vint{ _mm_sad_epu8(a.m_value, b.m_value) }; } - -CPPSPMD_FORCE_INLINE vint add_epi8(const vint& a, const vint& b) { return vint{ _mm_add_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint adds_epi8(const vint& a, const vint& b) { return vint{ _mm_adds_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint sub_epi8(const vint& a, const vint& b) { return vint{ _mm_sub_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint subs_epi8(const vint& a, const vint& b) { return vint{ _mm_subs_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmpeq_epi8(const vint& a, const vint& b) { return vint{ _mm_cmpeq_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmpgt_epi8(const vint& a, const vint& b) { return vint{ _mm_cmpgt_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmplt_epi8(const vint& a, const vint& b) { return vint{ _mm_cmplt_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint unpacklo_epi8(const vint& a, const vint& b) { return vint{ _mm_unpacklo_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint unpackhi_epi8(const vint& a, const vint& b) { return vint{ _mm_unpackhi_epi8(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE int movemask_epi8(const vint& a) { return _mm_movemask_epi8(a.m_value); } -CPPSPMD_FORCE_INLINE int movemask_epi32(const vint& a) { return _mm_movemask_ps(_mm_castsi128_ps(a.m_value)); } - -CPPSPMD_FORCE_INLINE vint cmple_epu8(const vint& a, const vint& b) { return vint{ _mm_cmpeq_epi8(_mm_min_epu8(a.m_value, b.m_value), a.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmpge_epu8(const vint& a, const vint& b) { return vint{ cmple_epu8(b, a) }; } -CPPSPMD_FORCE_INLINE vint cmpgt_epu8(const vint& a, const vint& b) { return vint{ _mm_andnot_si128(_mm_cmpeq_epi8(a.m_value, b.m_value), _mm_cmpeq_epi8(_mm_max_epu8(a.m_value, b.m_value), a.m_value)) }; } -CPPSPMD_FORCE_INLINE vint cmplt_epu8(const vint& a, const vint& b) { return vint{ cmpgt_epu8(b, a) }; } -CPPSPMD_FORCE_INLINE vint absdiff_epu8(const vint& a, const vint& b) { return vint{ _mm_or_si128(_mm_subs_epu8(a.m_value, b.m_value), _mm_subs_epu8(b.m_value, a.m_value)) }; } - -CPPSPMD_FORCE_INLINE vint blendv_epi8(const vint& a, const vint& b, const vint &mask) { return vint{ blendv_epi8(a.m_value, b.m_value, _mm_cmplt_epi8(mask.m_value, _mm_setzero_si128())) }; } -CPPSPMD_FORCE_INLINE vint blendv_epi32(const vint& a, const vint& b, const vint &mask) { return vint{ blendv_epi32(a.m_value, b.m_value, mask.m_value) }; } - -CPPSPMD_FORCE_INLINE vint add_epi16(const vint& a, const vint& b) { return vint{ _mm_add_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint adds_epi16(const vint& a, const vint& b) { return vint{ _mm_adds_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint adds_epu16(const vint& a, const vint& b) { return vint{ _mm_adds_epu16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint avg_epu16(const vint& a, const vint& b) { return vint{ _mm_avg_epu16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint sub_epi16(const vint& a, const vint& b) { return vint{ _mm_sub_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint subs_epi16(const vint& a, const vint& b) { return vint{ _mm_subs_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint subs_epu16(const vint& a, const vint& b) { return vint{ _mm_subs_epu16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint mullo_epi16(const vint& a, const vint& b) { return vint{ _mm_mullo_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint mulhi_epi16(const vint& a, const vint& b) { return vint{ _mm_mulhi_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint mulhi_epu16(const vint& a, const vint& b) { return vint{ _mm_mulhi_epu16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint min_epi16(const vint& a, const vint& b) { return vint{ _mm_min_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint max_epi16(const vint& a, const vint& b) { return vint{ _mm_max_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint madd_epi16(const vint& a, const vint& b) { return vint{ _mm_madd_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmpeq_epi16(const vint& a, const vint& b) { return vint{ _mm_cmpeq_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmpgt_epi16(const vint& a, const vint& b) { return vint{ _mm_cmpgt_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint cmplt_epi16(const vint& a, const vint& b) { return vint{ _mm_cmplt_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint packs_epi16(const vint& a, const vint& b) { return vint{ _mm_packs_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint packus_epi16(const vint& a, const vint& b) { return vint{ _mm_packus_epi16(a.m_value, b.m_value) }; } - -CPPSPMD_FORCE_INLINE vint uniform_shift_left_epi16(const vint& a, const vint& b) { return vint{ _mm_sll_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint uniform_arith_shift_right_epi16(const vint& a, const vint& b) { return vint{ _mm_sra_epi16(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vint uniform_shift_right_epi16(const vint& a, const vint& b) { return vint{ _mm_srl_epi16(a.m_value, b.m_value) }; } - -#define VINT_SHIFT_LEFT_EPI16(a, b) vint(_mm_slli_epi16((a).m_value, b)) -#define VINT_SHIFT_RIGHT_EPI16(a, b) vint(_mm_srai_epi16((a).m_value, b)) -#define VUINT_SHIFT_RIGHT_EPI16(a, b) vint(_mm_srli_epi16((a).m_value, b)) - -CPPSPMD_FORCE_INLINE vint undefined_vint() { return vint{ _mm_undefined_si128() }; } -CPPSPMD_FORCE_INLINE vfloat undefined_vfloat() { return vfloat{ _mm_undefined_ps() }; } - -CPPSPMD_FORCE_INLINE vint zero_vint() { return vint{ _mm_setzero_si128() }; } -CPPSPMD_FORCE_INLINE vfloat zero_vfloat() { return vfloat{ _mm_setzero_ps() }; } - -CPPSPMD_FORCE_INLINE vint vint_lane_set(int v0, int v1, int v2, int v3) { return vint{ _mm_set_epi32(v3, v2, v1, v0) }; } -CPPSPMD_FORCE_INLINE vfloat vfloat_lane_set(float v0, float v1, float v2, float v3) { return vfloat{ _mm_set_ps(v3, v2, v1, v0) }; } -CPPSPMD_FORCE_INLINE vint vint_lane_set_r(int v3, int v2, int v1, int v0) { return vint{ _mm_set_epi32(v3, v2, v1, v0) }; } -CPPSPMD_FORCE_INLINE vfloat vfloat_lane_set_r(float v3, float v2, float v1, float v0) { return vfloat{ _mm_set_ps(v3, v2, v1, v0) }; } -// control is an 8-bit immediate value containing 4 2-bit indices which shuffles the int32's in each 128-bit lane. -#define VINT_LANE_SHUFFLE_EPI32(a, control) vint(_mm_shuffle_epi32((a).m_value, control)) -#define VFLOAT_LANE_SHUFFLE_PS(a, b, control) vfloat(_mm_shuffle_ps((a).m_value, (b).m_value, control)) - -// control is an 8-bit immediate value containing 4 2-bit indices which shuffles the int16's in either the high or low 64-bit lane. -#define VINT_LANE_SHUFFLELO_EPI16(a, control) vint(_mm_shufflelo_epi16((a).m_value, control)) -#define VINT_LANE_SHUFFLEHI_EPI16(a, control) vint(_mm_shufflehi_epi16((a).m_value, control)) - -#define VINT_LANE_SHUFFLE_MASK(a, b, c, d) ((a) | ((b) << 2) | ((c) << 4) | ((d) << 6)) -#define VINT_LANE_SHUFFLE_MASK_R(d, c, b, a) ((a) | ((b) << 2) | ((c) << 4) | ((d) << 6)) - -#define VINT_LANE_SHIFT_LEFT_BYTES(a, l) vint(_mm_slli_si128((a).m_value, l)) -#define VINT_LANE_SHIFT_RIGHT_BYTES(a, l) vint(_mm_srli_si128((a).m_value, l)) - -// Unpack and interleave 8-bit integers from the low or high half of a and b -CPPSPMD_FORCE_INLINE vint vint_lane_unpacklo_epi8(const vint& a, const vint& b) { return vint(_mm_unpacklo_epi8(a.m_value, b.m_value)); } -CPPSPMD_FORCE_INLINE vint vint_lane_unpackhi_epi8(const vint& a, const vint& b) { return vint(_mm_unpackhi_epi8(a.m_value, b.m_value)); } - -// Unpack and interleave 16-bit integers from the low or high half of a and b -CPPSPMD_FORCE_INLINE vint vint_lane_unpacklo_epi16(const vint& a, const vint& b) { return vint(_mm_unpacklo_epi16(a.m_value, b.m_value)); } -CPPSPMD_FORCE_INLINE vint vint_lane_unpackhi_epi16(const vint& a, const vint& b) { return vint(_mm_unpackhi_epi16(a.m_value, b.m_value)); } - -// Unpack and interleave 32-bit integers from the low or high half of a and b -CPPSPMD_FORCE_INLINE vint vint_lane_unpacklo_epi32(const vint& a, const vint& b) { return vint(_mm_unpacklo_epi32(a.m_value, b.m_value)); } -CPPSPMD_FORCE_INLINE vint vint_lane_unpackhi_epi32(const vint& a, const vint& b) { return vint(_mm_unpackhi_epi32(a.m_value, b.m_value)); } - -// Unpack and interleave 64-bit integers from the low or high half of a and b -CPPSPMD_FORCE_INLINE vint vint_lane_unpacklo_epi64(const vint& a, const vint& b) { return vint(_mm_unpacklo_epi64(a.m_value, b.m_value)); } -CPPSPMD_FORCE_INLINE vint vint_lane_unpackhi_epi64(const vint& a, const vint& b) { return vint(_mm_unpackhi_epi64(a.m_value, b.m_value)); } - -CPPSPMD_FORCE_INLINE vint vint_set1_epi8(int8_t a) { return vint(_mm_set1_epi8(a)); } -CPPSPMD_FORCE_INLINE vint vint_set1_epi16(int16_t a) { return vint(_mm_set1_epi16(a)); } -CPPSPMD_FORCE_INLINE vint vint_set1_epi32(int32_t a) { return vint(_mm_set1_epi32(a)); } -CPPSPMD_FORCE_INLINE vint vint_set1_epi64(int64_t a) { return vint(_mm_set1_epi64x(a)); } - -CPPSPMD_FORCE_INLINE vint mul_epu32(const vint &a, const vint& b) { return vint(_mm_mul_epu32(a.m_value, b.m_value)); } - -CPPSPMD_FORCE_INLINE vint div_epi32(const vint &a, const vint& b) -{ - __m128d al = _mm_cvtepi32_pd(a.m_value); - __m128d ah = _mm_cvtepi32_pd(_mm_unpackhi_epi64(a.m_value, a.m_value)); - - __m128d bl = _mm_cvtepi32_pd(b.m_value); - __m128d bh = _mm_cvtepi32_pd(_mm_unpackhi_epi64(b.m_value, b.m_value)); - - __m128d rl = _mm_div_pd(al, bl); - __m128d rh = _mm_div_pd(ah, bh); - - __m128i rli = _mm_cvttpd_epi32(rl); - __m128i rhi = _mm_cvttpd_epi32(rh); - - return vint(_mm_unpacklo_epi64(rli, rhi)); -} - -CPPSPMD_FORCE_INLINE vint mod_epi32(const vint &a, const vint& b) -{ - vint aa = abs(a), ab = abs(b); - vint q = div_epi32(aa, ab); - vint r = aa - q * ab; - return spmd_ternaryi(a < 0, -r, r); -} - -CPPSPMD_FORCE_INLINE vint operator/ (const vint& a, const vint& b) -{ - return div_epi32(a, b); -} - -CPPSPMD_FORCE_INLINE vint operator/ (const vint& a, int b) -{ - return div_epi32(a, vint(b)); -} - -CPPSPMD_FORCE_INLINE vint operator% (const vint& a, const vint& b) -{ - return mod_epi32(a, b); -} - -CPPSPMD_FORCE_INLINE vint operator% (const vint& a, int b) -{ - return mod_epi32(a, vint(b)); -} - -CPPSPMD_FORCE_INLINE vint operator<< (const vint& a, const vint& b) -{ -#if 0 - CPPSPMD_ALIGN(32) int result[4]; - result[0] = extract_x(a.m_value) << extract_x(b.m_value); - result[1] = extract_y(a.m_value) << extract_y(b.m_value); - result[2] = extract_z(a.m_value) << extract_z(b.m_value); - result[3] = extract_w(a.m_value) << extract_w(b.m_value); - - return vint{ _mm_load_si128((__m128i*)result) }; -#elif 0 - int x = extract_x(a.m_value) << extract_x(b.m_value); - int y = extract_y(a.m_value) << extract_y(b.m_value); - int z = extract_z(a.m_value) << extract_z(b.m_value); - int w = extract_w(a.m_value) << extract_w(b.m_value); - - __m128i v = insert_x(_mm_undefined_si128(), x); - v = insert_y(v, y); - v = insert_z(v, z); - return vint{ insert_w(v, w) }; -#else - // What this does: shift left each b lane by 23 bits (to move the shift amount into the FP exponent position), then epi32 add to the integer rep of 1.0f, then cast that to float, then convert that to int to get fast 2^x. - return a * vint(cast_vint_to_vfloat(vint(_mm_slli_epi32(b.m_value, 23)) + cast_vfloat_to_vint(vfloat(1.0f)))); -#endif -} - -// uniform shift left -CPPSPMD_FORCE_INLINE vint operator<< (const vint& a, int b) -{ - __m128i bv = _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(_mm_set1_epi32(b)), _mm_castsi128_ps(_mm_load_si128((const __m128i *)g_x_128)))); - return vint{ _mm_sll_epi32(a.m_value, bv) }; -} - -// uniform arithmetic shift right -CPPSPMD_FORCE_INLINE vint operator>> (const vint& a, int b) -{ - __m128i bv = _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(_mm_set1_epi32(b)), _mm_castsi128_ps(_mm_load_si128((const __m128i *)g_x_128)))); - return vint{ _mm_sra_epi32(a.m_value, bv) }; -} - -// uniform shift right -CPPSPMD_FORCE_INLINE vint vuint_shift_right(const vint& a, int b) -{ - __m128i bv = _mm_castps_si128(_mm_and_ps(_mm_castsi128_ps(_mm_set1_epi32(b)), _mm_castsi128_ps(_mm_load_si128((const __m128i *)g_x_128)))); - return vint{ _mm_srl_epi32(a.m_value, bv) }; -} - -CPPSPMD_FORCE_INLINE vint vuint_shift_right(const vint& a, const vint& b) -{ -#if 0 - CPPSPMD_ALIGN(32) int result[4]; - result[0] = ((uint32_t)extract_x(a.m_value)) >> extract_x(b.m_value); - result[1] = ((uint32_t)extract_y(a.m_value)) >> extract_y(b.m_value); - result[2] = ((uint32_t)extract_z(a.m_value)) >> extract_z(b.m_value); - result[3] = ((uint32_t)extract_w(a.m_value)) >> extract_w(b.m_value); - - return vint{ _mm_load_si128((__m128i*)result) }; -#elif 0 - uint32_t x = ((uint32_t)extract_x(a.m_value)) >> ((uint32_t)extract_x(b.m_value)); - uint32_t y = ((uint32_t)extract_y(a.m_value)) >> ((uint32_t)extract_y(b.m_value)); - uint32_t z = ((uint32_t)extract_z(a.m_value)) >> ((uint32_t)extract_z(b.m_value)); - uint32_t w = ((uint32_t)extract_w(a.m_value)) >> ((uint32_t)extract_w(b.m_value)); - - __m128i v = insert_x(_mm_undefined_si128(), x); - v = insert_y(v, y); - v = insert_z(v, z); - return vint{ insert_w(v, w) }; -#else - //vint inv_shift = 32 - b; - //vfloat f = cast_vint_to_vfloat(vint(_mm_slli_epi32(inv_shift.m_value, 23)) + cast_vfloat_to_vint(vfloat(1.0f))); - - // Take float rep of 1.0f (0x3f800000), subtract (32<<23), subtract (shift<<23), cast to float. - vfloat f = cast_vint_to_vfloat(vint(_mm_sub_epi32(_mm_set1_epi32(0x4f800000), _mm_slli_epi32(b.m_value, 23)))); - - // Now convert scale factor to integer. - vint r = vint(f); - - // mulhi_epu32 (using two _mm_mul_epu32), to emulate varying shift left. - vint q(mulhi_epu32(a.m_value, r.m_value)); - - // Handle shift amounts of 0. - return spmd_ternaryi(b > 0, q, a); -#endif -} - -CPPSPMD_FORCE_INLINE vint vuint_shift_right_not_zero(const vint& a, const vint& b) -{ - //vint inv_shift = 32 - b; - //vfloat f = cast_vint_to_vfloat(vint(_mm_slli_epi32(inv_shift.m_value, 23)) + cast_vfloat_to_vint(vfloat(1.0f))); - - // Take float rep of 1.0f (0x3f800000), subtract (32<<23), subtract (shift<<23), cast to float. - vfloat f = cast_vint_to_vfloat(vint(_mm_sub_epi32(_mm_set1_epi32(0x4f800000), _mm_slli_epi32(b.m_value, 23)))); - - // Now convert scale factor to integer. - vint r = vint(f); - - // mulhi_epu32 (using two _mm_mul_epu32), to emulate varying shift left. - return vint(mulhi_epu32(a.m_value, r.m_value)); -} - -CPPSPMD_FORCE_INLINE vint operator>> (const vint& a, const vint& b) -{ -#if 0 - CPPSPMD_ALIGN(32) int result[4]; - result[0] = extract_x(a.m_value) >> extract_x(b.m_value); - result[1] = extract_y(a.m_value) >> extract_y(b.m_value); - result[2] = extract_z(a.m_value) >> extract_z(b.m_value); - result[3] = extract_w(a.m_value) >> extract_w(b.m_value); - - return vint{ _mm_load_si128((__m128i*)result) }; -#elif 0 - int x = extract_x(a.m_value) >> extract_x(b.m_value); - int y = extract_y(a.m_value) >> extract_y(b.m_value); - int z = extract_z(a.m_value) >> extract_z(b.m_value); - int w = extract_w(a.m_value) >> extract_w(b.m_value); - - __m128i v = insert_x(_mm_undefined_si128(), x); - v = insert_y(v, y); - v = insert_z(v, z); - return vint{ insert_w(v, w) }; -#else - vint sign_mask(_mm_cmplt_epi32(a.m_value, _mm_setzero_si128())); - vint a_shifted = vuint_shift_right(a ^ sign_mask, b) ^ sign_mask; - return a_shifted; -#endif -} - -#undef VINT_SHIFT_LEFT -#undef VINT_SHIFT_RIGHT -#undef VUINT_SHIFT_RIGHT - -// Shift left/right by a uniform immediate constant -#define VINT_SHIFT_LEFT(a, b) vint(_mm_slli_epi32( (a).m_value, (b) ) ) -#define VINT_SHIFT_RIGHT(a, b) vint( _mm_srai_epi32( (a).m_value, (b) ) ) -#define VUINT_SHIFT_RIGHT(a, b) vint( _mm_srli_epi32( (a).m_value, (b) ) ) -#define VINT_ROT(x, k) (VINT_SHIFT_LEFT((x), (k)) | VUINT_SHIFT_RIGHT((x), 32 - (k))) - -CPPSPMD_FORCE_INLINE vbool operator==(const lint& a, const lint& b) { return vbool{ _mm_cmpeq_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator==(const lint& a, int b) { return vint(a) == vint(b); } -CPPSPMD_FORCE_INLINE vbool operator==(int a, const lint& b) { return vint(a) == vint(b); } -CPPSPMD_FORCE_INLINE vbool operator<(const lint& a, const lint& b) { return vbool{ _mm_cmpgt_epi32(b.m_value, a.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator>(const lint& a, const lint& b) { return vbool{ _mm_cmpgt_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator<=(const lint& a, const lint& b) { return !vbool{ _mm_cmpgt_epi32(a.m_value, b.m_value) }; } -CPPSPMD_FORCE_INLINE vbool operator>=(const lint& a, const lint& b) { return !vbool{ _mm_cmpgt_epi32(b.m_value, a.m_value) }; } - -CPPSPMD_FORCE_INLINE float extract(const vfloat& v, int instance) { assert(instance < 4); CPPSPMD_ALIGN(16) float values[4]; _mm_store_ps(values, v.m_value); return values[instance]; } -CPPSPMD_FORCE_INLINE int extract(const vint& v, int instance) { assert(instance < 4); CPPSPMD_ALIGN(16) int values[4]; _mm_store_si128((__m128i*)values, v.m_value); return values[instance]; } -CPPSPMD_FORCE_INLINE int extract(const lint& v, int instance) { assert(instance < 4); CPPSPMD_ALIGN(16) int values[4]; _mm_store_si128((__m128i*)values, v.m_value); return values[instance]; } -CPPSPMD_FORCE_INLINE bool extract(const vbool& v, int instance) { assert(instance < 4); CPPSPMD_ALIGN(16) int values[4]; _mm_store_si128((__m128i*)values, v.m_value); return values[instance] != 0; } - -#undef VINT_EXTRACT -#undef VBOOL_EXTRACT -#undef VFLOAT_EXTRACT - -#if CPPSPMD_SSE2 -// Pass in an immediate constant and the compiler will optimize these expressions. -#define VINT_EXTRACT(v, instance) ( ((instance) == 0) ? extract_x((v).m_value) : (((instance) == 1) ? extract_y((v).m_value) : (((instance) == 2) ? extract_z((v).m_value) : extract_w((v).m_value))) ) -#define VBOOL_EXTRACT(v, instance) ( ((instance) == 0) ? extract_x((v).m_value) : (((instance) == 1) ? extract_y((v).m_value) : (((instance) == 2) ? extract_z((v).m_value) : extract_w((v).m_value))) ) -#define VFLOAT_EXTRACT(v, instance) ( ((instance) == 0) ? extractf_ps_x((v).m_value) : (((instance) == 1) ? extractf_ps_y((v).m_value) : (((instance) == 2) ? extractf_ps_z((v).m_value) : extractf_ps_w((v).m_value))) ) -#else -CPPSPMD_FORCE_INLINE float cast_int_bits_as_float(int v) { return *(const float*)&v; } - -#define VINT_EXTRACT(v, instance) _mm_extract_epi32((v).m_value, instance) -#define VBOOL_EXTRACT(v, instance) _mm_extract_epi32((v).m_value, instance) -#define VFLOAT_EXTRACT(v, instance) cast_int_bits_as_float(_mm_extract_ps((v).m_value, instance)) -#endif - -CPPSPMD_FORCE_INLINE vfloat &insert(vfloat& v, int instance, float f) -{ - assert(instance < 4); - CPPSPMD_ALIGN(16) float values[4]; - _mm_store_ps(values, v.m_value); - values[instance] = f; - v.m_value = _mm_load_ps(values); - return v; -} - -CPPSPMD_FORCE_INLINE vint &insert(vint& v, int instance, int i) -{ - assert(instance < 4); - CPPSPMD_ALIGN(16) int values[4]; - _mm_store_si128((__m128i *)values, v.m_value); - values[instance] = i; - v.m_value = _mm_load_si128((__m128i *)values); - return v; -} - -CPPSPMD_FORCE_INLINE vint init_lookup4(const uint8_t pTab[16]) -{ - __m128i l = _mm_loadu_si128((const __m128i*)pTab); - return vint{ l }; -} - -CPPSPMD_FORCE_INLINE vint table_lookup4_8(const vint& a, const vint& table) -{ - return vint{ shuffle_epi8(table.m_value, a.m_value) }; -} - -CPPSPMD_FORCE_INLINE void init_lookup5(const uint8_t pTab[32], vint& table_0, vint& table_1) -{ - __m128i l = _mm_loadu_si128((const __m128i*)pTab); - __m128i h = _mm_loadu_si128((const __m128i*)(pTab + 16)); - table_0.m_value = l; - table_1.m_value = h; -} - -CPPSPMD_FORCE_INLINE vint table_lookup5_8(const vint& a, const vint& table_0, const vint& table_1) -{ - __m128i l_0 = shuffle_epi8(table_0.m_value, a.m_value); - __m128i h_0 = shuffle_epi8(table_1.m_value, a.m_value); - - __m128i m_0 = _mm_slli_epi32(a.m_value, 31 - 4); - - __m128 v_0 = blendv_ps(_mm_castsi128_ps(l_0), _mm_castsi128_ps(h_0), _mm_castsi128_ps(m_0)); - - return vint{ _mm_castps_si128(v_0) }; -} - -CPPSPMD_FORCE_INLINE void init_lookup6(const uint8_t pTab[64], vint& table_0, vint& table_1, vint& table_2, vint& table_3) -{ - __m128i a = _mm_loadu_si128((const __m128i*)pTab); - __m128i b = _mm_loadu_si128((const __m128i*)(pTab + 16)); - __m128i c = _mm_loadu_si128((const __m128i*)(pTab + 32)); - __m128i d = _mm_loadu_si128((const __m128i*)(pTab + 48)); - - table_0.m_value = a; - table_1.m_value = b; - table_2.m_value = c; - table_3.m_value = d; -} - -CPPSPMD_FORCE_INLINE vint table_lookup6_8(const vint& a, const vint& table_0, const vint& table_1, const vint& table_2, const vint& table_3) -{ - __m128i m_0 = _mm_slli_epi32(a.m_value, 31 - 4); - - __m128 av_0; - { - __m128i al_0 = shuffle_epi8(table_0.m_value, a.m_value); - __m128i ah_0 = shuffle_epi8(table_1.m_value, a.m_value); - av_0 = blendv_ps(_mm_castsi128_ps(al_0), _mm_castsi128_ps(ah_0), _mm_castsi128_ps(m_0)); - } - - __m128 bv_0; - { - __m128i bl_0 = shuffle_epi8(table_2.m_value, a.m_value); - __m128i bh_0 = shuffle_epi8(table_3.m_value, a.m_value); - bv_0 = blendv_ps(_mm_castsi128_ps(bl_0), _mm_castsi128_ps(bh_0), _mm_castsi128_ps(m_0)); - } - - __m128i m2_0 = _mm_slli_epi32(a.m_value, 31 - 5); - __m128 v2_0 = blendv_ps(av_0, bv_0, _mm_castsi128_ps(m2_0)); - - return vint{ _mm_castps_si128(v2_0) }; -} - -#if 0 -template -CPPSPMD_FORCE_INLINE decltype(auto) spmd_call(Args&&... args) -{ - SPMDKernel kernel; - kernel.init(exec_mask::all_on()); - return kernel._call(std::forward(args)...); -} -#else -template -CPPSPMD_FORCE_INLINE void spmd_call(Args&&... args) -{ - SPMDKernel kernel; - kernel.init(exec_mask::all_on()); - kernel._call(std::forward(args)...); -} -#endif - -CPPSPMD_FORCE_INLINE void spmd_kernel::init(const spmd_kernel::exec_mask& kernel_exec) -{ - m_exec = kernel_exec; - m_kernel_exec = kernel_exec; - m_continue_mask = exec_mask::all_off(); - -#ifdef _DEBUG - m_in_loop = false; -#endif -} - -CPPSPMD_FORCE_INLINE const float_vref& spmd_kernel::store(const float_vref& dst, const vfloat& src) -{ - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i*)vindex, dst.m_vindex); - - CPPSPMD_ALIGN(16) float stored[4]; - _mm_store_ps(stored, src.m_value); - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - dst.m_pValue[vindex[i]] = stored[i]; - } - return dst; -} - -CPPSPMD_FORCE_INLINE const float_vref& spmd_kernel::store_all(const float_vref& dst, const vfloat& src) -{ - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i*)vindex, dst.m_vindex); - - CPPSPMD_ALIGN(16) float stored[4]; - _mm_store_ps(stored, src.m_value); - - for (int i = 0; i < 4; i++) - dst.m_pValue[vindex[i]] = stored[i]; - return dst; -} - -CPPSPMD_FORCE_INLINE const float_vref& spmd_kernel::store(const float_vref&& dst, const vfloat& src) -{ - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i*)vindex, dst.m_vindex); - - CPPSPMD_ALIGN(16) float stored[4]; - _mm_store_ps(stored, src.m_value); - - int mask = _mm_movemask_ps(_mm_castsi128_ps(m_exec.m_mask)); - for (int i = 0; i < 4; i++) - { - if (mask & (1 << i)) - dst.m_pValue[vindex[i]] = stored[i]; - } - return dst; -} - -CPPSPMD_FORCE_INLINE const float_vref& spmd_kernel::store_all(const float_vref&& dst, const vfloat& src) -{ - CPPSPMD_ALIGN(16) int vindex[4]; - _mm_store_si128((__m128i*)vindex, dst.m_vindex); - - CPPSPMD_ALIGN(16) float stored[4]; - _mm_store_ps(stored, src.m_value); - - for (int i = 0; i < 4; i++) - dst.m_pValue[vindex[i]] = stored[i]; - return dst; -} - -#include "cppspmd_flow.h" -#include "cppspmd_math.h" - -} // namespace cppspmd_sse41 - diff --git a/WickedEngine/Utility/basis_universal/encoder/cppspmd_type_aliases.h b/WickedEngine/Utility/basis_universal/encoder/cppspmd_type_aliases.h deleted file mode 100644 index 0dfb28b88..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/cppspmd_type_aliases.h +++ /dev/null @@ -1,47 +0,0 @@ -// cppspmd_type_aliases.h -// Do not include this file directly -// -// Copyright 2020-2021 Binomial LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#pragma once - -#ifndef CPPSPMD_TYPES -#define CPPSPMD_TYPES - -using exec_mask = CPPSPMD::exec_mask; - -#if CPPSPMD_INT16 -using vint16 = CPPSPMD::vint16; -using int16_lref = CPPSPMD::int16_lref; -using cint16_vref = CPPSPMD::cint16_vref; -using int16_vref = CPPSPMD::int16_vref; -using lint16 = CPPSPMD::lint16; -using vint16_vref = CPPSPMD::vint16_vref; -#else -using vint = CPPSPMD::vint; -using int_lref = CPPSPMD::int_lref; -using cint_vref = CPPSPMD::cint_vref; -using int_vref = CPPSPMD::int_vref; -using lint = CPPSPMD::lint; -using vint_vref = CPPSPMD::vint_vref; -#endif - -using vbool = CPPSPMD::vbool; -using vfloat = CPPSPMD::vfloat; -using float_lref = CPPSPMD::float_lref; -using float_vref = CPPSPMD::float_vref; -using vfloat_vref = CPPSPMD::vfloat_vref; - -#endif // CPPSPMD_TYPES diff --git a/WickedEngine/Utility/basis_universal/encoder/jpgd.cpp b/WickedEngine/Utility/basis_universal/encoder/jpgd.cpp deleted file mode 100644 index 8ee3d06cf..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/jpgd.cpp +++ /dev/null @@ -1,3230 +0,0 @@ -// jpgd.cpp - C++ class for JPEG decompression. Written by Richard Geldreich between 1994-2020. -// Supports progressive and baseline sequential JPEG image files, and the most common chroma subsampling factors: Y, H1V1, H2V1, H1V2, and H2V2. -// Supports box and linear chroma upsampling. -// -// Released under two licenses. You are free to choose which license you want: -// License 1: -// Public Domain -// -// License 2: -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// -// Alex Evans: Linear memory allocator (taken from jpge.h). -// v1.04, May. 19, 2012: Code tweaks to fix VS2008 static code analysis warnings -// v2.00, March 20, 2020: Fuzzed with zzuf and afl. Fixed several issues, converted most assert()'s to run-time checks. Added chroma upsampling. Removed freq. domain upsampling. gcc/clang warnings. -// - -#include "jpgd.h" -#include -#include -#include - -#ifdef _MSC_VER -#pragma warning (disable : 4611) // warning C4611: interaction between '_setjmp' and C++ object destruction is non-portable -#endif - -#define JPGD_TRUE (1) -#define JPGD_FALSE (0) - -#define JPGD_MAX(a,b) (((a)>(b)) ? (a) : (b)) -#define JPGD_MIN(a,b) (((a)<(b)) ? (a) : (b)) - -namespace jpgd { - - static inline void* jpgd_malloc(size_t nSize) { return malloc(nSize); } - static inline void jpgd_free(void* p) { free(p); } - - // DCT coefficients are stored in this sequence. - static int g_ZAG[64] = { 0,1,8,16,9,2,3,10,17,24,32,25,18,11,4,5,12,19,26,33,40,48,41,34,27,20,13,6,7,14,21,28,35,42,49,56,57,50,43,36,29,22,15,23,30,37,44,51,58,59,52,45,38,31,39,46,53,60,61,54,47,55,62,63 }; - - enum JPEG_MARKER - { - M_SOF0 = 0xC0, M_SOF1 = 0xC1, M_SOF2 = 0xC2, M_SOF3 = 0xC3, M_SOF5 = 0xC5, M_SOF6 = 0xC6, M_SOF7 = 0xC7, M_JPG = 0xC8, - M_SOF9 = 0xC9, M_SOF10 = 0xCA, M_SOF11 = 0xCB, M_SOF13 = 0xCD, M_SOF14 = 0xCE, M_SOF15 = 0xCF, M_DHT = 0xC4, M_DAC = 0xCC, - M_RST0 = 0xD0, M_RST1 = 0xD1, M_RST2 = 0xD2, M_RST3 = 0xD3, M_RST4 = 0xD4, M_RST5 = 0xD5, M_RST6 = 0xD6, M_RST7 = 0xD7, - M_SOI = 0xD8, M_EOI = 0xD9, M_SOS = 0xDA, M_DQT = 0xDB, M_DNL = 0xDC, M_DRI = 0xDD, M_DHP = 0xDE, M_EXP = 0xDF, - M_APP0 = 0xE0, M_APP15 = 0xEF, M_JPG0 = 0xF0, M_JPG13 = 0xFD, M_COM = 0xFE, M_TEM = 0x01, M_ERROR = 0x100, RST0 = 0xD0 - }; - - enum JPEG_SUBSAMPLING { JPGD_GRAYSCALE = 0, JPGD_YH1V1, JPGD_YH2V1, JPGD_YH1V2, JPGD_YH2V2 }; - -#define CONST_BITS 13 -#define PASS1_BITS 2 -#define SCALEDONE ((int32)1) - -#define FIX_0_298631336 ((int32)2446) /* FIX(0.298631336) */ -#define FIX_0_390180644 ((int32)3196) /* FIX(0.390180644) */ -#define FIX_0_541196100 ((int32)4433) /* FIX(0.541196100) */ -#define FIX_0_765366865 ((int32)6270) /* FIX(0.765366865) */ -#define FIX_0_899976223 ((int32)7373) /* FIX(0.899976223) */ -#define FIX_1_175875602 ((int32)9633) /* FIX(1.175875602) */ -#define FIX_1_501321110 ((int32)12299) /* FIX(1.501321110) */ -#define FIX_1_847759065 ((int32)15137) /* FIX(1.847759065) */ -#define FIX_1_961570560 ((int32)16069) /* FIX(1.961570560) */ -#define FIX_2_053119869 ((int32)16819) /* FIX(2.053119869) */ -#define FIX_2_562915447 ((int32)20995) /* FIX(2.562915447) */ -#define FIX_3_072711026 ((int32)25172) /* FIX(3.072711026) */ - -#define DESCALE(x,n) (((x) + (SCALEDONE << ((n)-1))) >> (n)) -#define DESCALE_ZEROSHIFT(x,n) (((x) + (128 << (n)) + (SCALEDONE << ((n)-1))) >> (n)) - -#define MULTIPLY(var, cnst) ((var) * (cnst)) - -#define CLAMP(i) ((static_cast(i) > 255) ? (((~i) >> 31) & 0xFF) : (i)) - - static inline int left_shifti(int val, uint32_t bits) - { - return static_cast(static_cast(val) << bits); - } - - // Compiler creates a fast path 1D IDCT for X non-zero columns - template - struct Row - { - static void idct(int* pTemp, const jpgd_block_t* pSrc) - { - // ACCESS_COL() will be optimized at compile time to either an array access, or 0. Good compilers will then optimize out muls against 0. -#define ACCESS_COL(x) (((x) < NONZERO_COLS) ? (int)pSrc[x] : 0) - - const int z2 = ACCESS_COL(2), z3 = ACCESS_COL(6); - - const int z1 = MULTIPLY(z2 + z3, FIX_0_541196100); - const int tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); - const int tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); - - const int tmp0 = left_shifti(ACCESS_COL(0) + ACCESS_COL(4), CONST_BITS); - const int tmp1 = left_shifti(ACCESS_COL(0) - ACCESS_COL(4), CONST_BITS); - - const int tmp10 = tmp0 + tmp3, tmp13 = tmp0 - tmp3, tmp11 = tmp1 + tmp2, tmp12 = tmp1 - tmp2; - - const int atmp0 = ACCESS_COL(7), atmp1 = ACCESS_COL(5), atmp2 = ACCESS_COL(3), atmp3 = ACCESS_COL(1); - - const int bz1 = atmp0 + atmp3, bz2 = atmp1 + atmp2, bz3 = atmp0 + atmp2, bz4 = atmp1 + atmp3; - const int bz5 = MULTIPLY(bz3 + bz4, FIX_1_175875602); - - const int az1 = MULTIPLY(bz1, -FIX_0_899976223); - const int az2 = MULTIPLY(bz2, -FIX_2_562915447); - const int az3 = MULTIPLY(bz3, -FIX_1_961570560) + bz5; - const int az4 = MULTIPLY(bz4, -FIX_0_390180644) + bz5; - - const int btmp0 = MULTIPLY(atmp0, FIX_0_298631336) + az1 + az3; - const int btmp1 = MULTIPLY(atmp1, FIX_2_053119869) + az2 + az4; - const int btmp2 = MULTIPLY(atmp2, FIX_3_072711026) + az2 + az3; - const int btmp3 = MULTIPLY(atmp3, FIX_1_501321110) + az1 + az4; - - pTemp[0] = DESCALE(tmp10 + btmp3, CONST_BITS - PASS1_BITS); - pTemp[7] = DESCALE(tmp10 - btmp3, CONST_BITS - PASS1_BITS); - pTemp[1] = DESCALE(tmp11 + btmp2, CONST_BITS - PASS1_BITS); - pTemp[6] = DESCALE(tmp11 - btmp2, CONST_BITS - PASS1_BITS); - pTemp[2] = DESCALE(tmp12 + btmp1, CONST_BITS - PASS1_BITS); - pTemp[5] = DESCALE(tmp12 - btmp1, CONST_BITS - PASS1_BITS); - pTemp[3] = DESCALE(tmp13 + btmp0, CONST_BITS - PASS1_BITS); - pTemp[4] = DESCALE(tmp13 - btmp0, CONST_BITS - PASS1_BITS); - } - }; - - template <> - struct Row<0> - { - static void idct(int* pTemp, const jpgd_block_t* pSrc) - { - (void)pTemp; - (void)pSrc; - } - }; - - template <> - struct Row<1> - { - static void idct(int* pTemp, const jpgd_block_t* pSrc) - { - const int dcval = left_shifti(pSrc[0], PASS1_BITS); - - pTemp[0] = dcval; - pTemp[1] = dcval; - pTemp[2] = dcval; - pTemp[3] = dcval; - pTemp[4] = dcval; - pTemp[5] = dcval; - pTemp[6] = dcval; - pTemp[7] = dcval; - } - }; - - // Compiler creates a fast path 1D IDCT for X non-zero rows - template - struct Col - { - static void idct(uint8* pDst_ptr, const int* pTemp) - { - // ACCESS_ROW() will be optimized at compile time to either an array access, or 0. -#define ACCESS_ROW(x) (((x) < NONZERO_ROWS) ? pTemp[x * 8] : 0) - - const int z2 = ACCESS_ROW(2); - const int z3 = ACCESS_ROW(6); - - const int z1 = MULTIPLY(z2 + z3, FIX_0_541196100); - const int tmp2 = z1 + MULTIPLY(z3, -FIX_1_847759065); - const int tmp3 = z1 + MULTIPLY(z2, FIX_0_765366865); - - const int tmp0 = left_shifti(ACCESS_ROW(0) + ACCESS_ROW(4), CONST_BITS); - const int tmp1 = left_shifti(ACCESS_ROW(0) - ACCESS_ROW(4), CONST_BITS); - - const int tmp10 = tmp0 + tmp3, tmp13 = tmp0 - tmp3, tmp11 = tmp1 + tmp2, tmp12 = tmp1 - tmp2; - - const int atmp0 = ACCESS_ROW(7), atmp1 = ACCESS_ROW(5), atmp2 = ACCESS_ROW(3), atmp3 = ACCESS_ROW(1); - - const int bz1 = atmp0 + atmp3, bz2 = atmp1 + atmp2, bz3 = atmp0 + atmp2, bz4 = atmp1 + atmp3; - const int bz5 = MULTIPLY(bz3 + bz4, FIX_1_175875602); - - const int az1 = MULTIPLY(bz1, -FIX_0_899976223); - const int az2 = MULTIPLY(bz2, -FIX_2_562915447); - const int az3 = MULTIPLY(bz3, -FIX_1_961570560) + bz5; - const int az4 = MULTIPLY(bz4, -FIX_0_390180644) + bz5; - - const int btmp0 = MULTIPLY(atmp0, FIX_0_298631336) + az1 + az3; - const int btmp1 = MULTIPLY(atmp1, FIX_2_053119869) + az2 + az4; - const int btmp2 = MULTIPLY(atmp2, FIX_3_072711026) + az2 + az3; - const int btmp3 = MULTIPLY(atmp3, FIX_1_501321110) + az1 + az4; - - int i = DESCALE_ZEROSHIFT(tmp10 + btmp3, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 0] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp10 - btmp3, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 7] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp11 + btmp2, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 1] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp11 - btmp2, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 6] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp12 + btmp1, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 2] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp12 - btmp1, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 5] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp13 + btmp0, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 3] = (uint8)CLAMP(i); - - i = DESCALE_ZEROSHIFT(tmp13 - btmp0, CONST_BITS + PASS1_BITS + 3); - pDst_ptr[8 * 4] = (uint8)CLAMP(i); - } - }; - - template <> - struct Col<1> - { - static void idct(uint8* pDst_ptr, const int* pTemp) - { - int dcval = DESCALE_ZEROSHIFT(pTemp[0], PASS1_BITS + 3); - const uint8 dcval_clamped = (uint8)CLAMP(dcval); - pDst_ptr[0 * 8] = dcval_clamped; - pDst_ptr[1 * 8] = dcval_clamped; - pDst_ptr[2 * 8] = dcval_clamped; - pDst_ptr[3 * 8] = dcval_clamped; - pDst_ptr[4 * 8] = dcval_clamped; - pDst_ptr[5 * 8] = dcval_clamped; - pDst_ptr[6 * 8] = dcval_clamped; - pDst_ptr[7 * 8] = dcval_clamped; - } - }; - - static const uint8 s_idct_row_table[] = - { - 1,0,0,0,0,0,0,0, 2,0,0,0,0,0,0,0, 2,1,0,0,0,0,0,0, 2,1,1,0,0,0,0,0, 2,2,1,0,0,0,0,0, 3,2,1,0,0,0,0,0, 4,2,1,0,0,0,0,0, 4,3,1,0,0,0,0,0, - 4,3,2,0,0,0,0,0, 4,3,2,1,0,0,0,0, 4,3,2,1,1,0,0,0, 4,3,2,2,1,0,0,0, 4,3,3,2,1,0,0,0, 4,4,3,2,1,0,0,0, 5,4,3,2,1,0,0,0, 6,4,3,2,1,0,0,0, - 6,5,3,2,1,0,0,0, 6,5,4,2,1,0,0,0, 6,5,4,3,1,0,0,0, 6,5,4,3,2,0,0,0, 6,5,4,3,2,1,0,0, 6,5,4,3,2,1,1,0, 6,5,4,3,2,2,1,0, 6,5,4,3,3,2,1,0, - 6,5,4,4,3,2,1,0, 6,5,5,4,3,2,1,0, 6,6,5,4,3,2,1,0, 7,6,5,4,3,2,1,0, 8,6,5,4,3,2,1,0, 8,7,5,4,3,2,1,0, 8,7,6,4,3,2,1,0, 8,7,6,5,3,2,1,0, - 8,7,6,5,4,2,1,0, 8,7,6,5,4,3,1,0, 8,7,6,5,4,3,2,0, 8,7,6,5,4,3,2,1, 8,7,6,5,4,3,2,2, 8,7,6,5,4,3,3,2, 8,7,6,5,4,4,3,2, 8,7,6,5,5,4,3,2, - 8,7,6,6,5,4,3,2, 8,7,7,6,5,4,3,2, 8,8,7,6,5,4,3,2, 8,8,8,6,5,4,3,2, 8,8,8,7,5,4,3,2, 8,8,8,7,6,4,3,2, 8,8,8,7,6,5,3,2, 8,8,8,7,6,5,4,2, - 8,8,8,7,6,5,4,3, 8,8,8,7,6,5,4,4, 8,8,8,7,6,5,5,4, 8,8,8,7,6,6,5,4, 8,8,8,7,7,6,5,4, 8,8,8,8,7,6,5,4, 8,8,8,8,8,6,5,4, 8,8,8,8,8,7,5,4, - 8,8,8,8,8,7,6,4, 8,8,8,8,8,7,6,5, 8,8,8,8,8,7,6,6, 8,8,8,8,8,7,7,6, 8,8,8,8,8,8,7,6, 8,8,8,8,8,8,8,6, 8,8,8,8,8,8,8,7, 8,8,8,8,8,8,8,8, - }; - - static const uint8 s_idct_col_table[] = - { - 1, 1, 2, 3, 3, 3, 3, 3, 3, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, - 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8 - }; - - // Scalar "fast pathing" IDCT. - static void idct(const jpgd_block_t* pSrc_ptr, uint8* pDst_ptr, int block_max_zag) - { - assert(block_max_zag >= 1); - assert(block_max_zag <= 64); - - if (block_max_zag <= 1) - { - int k = ((pSrc_ptr[0] + 4) >> 3) + 128; - k = CLAMP(k); - k = k | (k << 8); - k = k | (k << 16); - - for (int i = 8; i > 0; i--) - { - *(int*)&pDst_ptr[0] = k; - *(int*)&pDst_ptr[4] = k; - pDst_ptr += 8; - } - return; - } - - int temp[64]; - - const jpgd_block_t* pSrc = pSrc_ptr; - int* pTemp = temp; - - const uint8* pRow_tab = &s_idct_row_table[(block_max_zag - 1) * 8]; - int i; - for (i = 8; i > 0; i--, pRow_tab++) - { - switch (*pRow_tab) - { - case 0: Row<0>::idct(pTemp, pSrc); break; - case 1: Row<1>::idct(pTemp, pSrc); break; - case 2: Row<2>::idct(pTemp, pSrc); break; - case 3: Row<3>::idct(pTemp, pSrc); break; - case 4: Row<4>::idct(pTemp, pSrc); break; - case 5: Row<5>::idct(pTemp, pSrc); break; - case 6: Row<6>::idct(pTemp, pSrc); break; - case 7: Row<7>::idct(pTemp, pSrc); break; - case 8: Row<8>::idct(pTemp, pSrc); break; - } - - pSrc += 8; - pTemp += 8; - } - - pTemp = temp; - - const int nonzero_rows = s_idct_col_table[block_max_zag - 1]; - for (i = 8; i > 0; i--) - { - switch (nonzero_rows) - { - case 1: Col<1>::idct(pDst_ptr, pTemp); break; - case 2: Col<2>::idct(pDst_ptr, pTemp); break; - case 3: Col<3>::idct(pDst_ptr, pTemp); break; - case 4: Col<4>::idct(pDst_ptr, pTemp); break; - case 5: Col<5>::idct(pDst_ptr, pTemp); break; - case 6: Col<6>::idct(pDst_ptr, pTemp); break; - case 7: Col<7>::idct(pDst_ptr, pTemp); break; - case 8: Col<8>::idct(pDst_ptr, pTemp); break; - } - - pTemp++; - pDst_ptr++; - } - } - - // Retrieve one character from the input stream. - inline uint jpeg_decoder::get_char() - { - // Any bytes remaining in buffer? - if (!m_in_buf_left) - { - // Try to get more bytes. - prep_in_buffer(); - // Still nothing to get? - if (!m_in_buf_left) - { - // Pad the end of the stream with 0xFF 0xD9 (EOI marker) - int t = m_tem_flag; - m_tem_flag ^= 1; - if (t) - return 0xD9; - else - return 0xFF; - } - } - - uint c = *m_pIn_buf_ofs++; - m_in_buf_left--; - - return c; - } - - // Same as previous method, except can indicate if the character is a pad character or not. - inline uint jpeg_decoder::get_char(bool* pPadding_flag) - { - if (!m_in_buf_left) - { - prep_in_buffer(); - if (!m_in_buf_left) - { - *pPadding_flag = true; - int t = m_tem_flag; - m_tem_flag ^= 1; - if (t) - return 0xD9; - else - return 0xFF; - } - } - - *pPadding_flag = false; - - uint c = *m_pIn_buf_ofs++; - m_in_buf_left--; - - return c; - } - - // Inserts a previously retrieved character back into the input buffer. - inline void jpeg_decoder::stuff_char(uint8 q) - { - // This could write before the input buffer, but we've placed another array there. - *(--m_pIn_buf_ofs) = q; - m_in_buf_left++; - } - - // Retrieves one character from the input stream, but does not read past markers. Will continue to return 0xFF when a marker is encountered. - inline uint8 jpeg_decoder::get_octet() - { - bool padding_flag; - int c = get_char(&padding_flag); - - if (c == 0xFF) - { - if (padding_flag) - return 0xFF; - - c = get_char(&padding_flag); - if (padding_flag) - { - stuff_char(0xFF); - return 0xFF; - } - - if (c == 0x00) - return 0xFF; - else - { - stuff_char(static_cast(c)); - stuff_char(0xFF); - return 0xFF; - } - } - - return static_cast(c); - } - - // Retrieves a variable number of bits from the input stream. Does not recognize markers. - inline uint jpeg_decoder::get_bits(int num_bits) - { - if (!num_bits) - return 0; - - uint i = m_bit_buf >> (32 - num_bits); - - if ((m_bits_left -= num_bits) <= 0) - { - m_bit_buf <<= (num_bits += m_bits_left); - - uint c1 = get_char(); - uint c2 = get_char(); - m_bit_buf = (m_bit_buf & 0xFFFF0000) | (c1 << 8) | c2; - - m_bit_buf <<= -m_bits_left; - - m_bits_left += 16; - - assert(m_bits_left >= 0); - } - else - m_bit_buf <<= num_bits; - - return i; - } - - // Retrieves a variable number of bits from the input stream. Markers will not be read into the input bit buffer. Instead, an infinite number of all 1's will be returned when a marker is encountered. - inline uint jpeg_decoder::get_bits_no_markers(int num_bits) - { - if (!num_bits) - return 0; - - assert(num_bits <= 16); - - uint i = m_bit_buf >> (32 - num_bits); - - if ((m_bits_left -= num_bits) <= 0) - { - m_bit_buf <<= (num_bits += m_bits_left); - - if ((m_in_buf_left < 2) || (m_pIn_buf_ofs[0] == 0xFF) || (m_pIn_buf_ofs[1] == 0xFF)) - { - uint c1 = get_octet(); - uint c2 = get_octet(); - m_bit_buf |= (c1 << 8) | c2; - } - else - { - m_bit_buf |= ((uint)m_pIn_buf_ofs[0] << 8) | m_pIn_buf_ofs[1]; - m_in_buf_left -= 2; - m_pIn_buf_ofs += 2; - } - - m_bit_buf <<= -m_bits_left; - - m_bits_left += 16; - - assert(m_bits_left >= 0); - } - else - m_bit_buf <<= num_bits; - - return i; - } - - // Decodes a Huffman encoded symbol. - inline int jpeg_decoder::huff_decode(huff_tables* pH) - { - if (!pH) - stop_decoding(JPGD_DECODE_ERROR); - - int symbol; - // Check first 8-bits: do we have a complete symbol? - if ((symbol = pH->look_up[m_bit_buf >> 24]) < 0) - { - // Decode more bits, use a tree traversal to find symbol. - int ofs = 23; - do - { - unsigned int idx = -(int)(symbol + ((m_bit_buf >> ofs) & 1)); - - // This should never happen, but to be safe I'm turning these asserts into a run-time check. - if ((idx >= JPGD_HUFF_TREE_MAX_LENGTH) || (ofs < 0)) - stop_decoding(JPGD_DECODE_ERROR); - - symbol = pH->tree[idx]; - ofs--; - } while (symbol < 0); - - get_bits_no_markers(8 + (23 - ofs)); - } - else - { - assert(symbol < JPGD_HUFF_CODE_SIZE_MAX_LENGTH); - get_bits_no_markers(pH->code_size[symbol]); - } - - return symbol; - } - - // Decodes a Huffman encoded symbol. - inline int jpeg_decoder::huff_decode(huff_tables* pH, int& extra_bits) - { - int symbol; - - if (!pH) - stop_decoding(JPGD_DECODE_ERROR); - - // Check first 8-bits: do we have a complete symbol? - if ((symbol = pH->look_up2[m_bit_buf >> 24]) < 0) - { - // Use a tree traversal to find symbol. - int ofs = 23; - do - { - unsigned int idx = -(int)(symbol + ((m_bit_buf >> ofs) & 1)); - - // This should never happen, but to be safe I'm turning these asserts into a run-time check. - if ((idx >= JPGD_HUFF_TREE_MAX_LENGTH) || (ofs < 0)) - stop_decoding(JPGD_DECODE_ERROR); - - symbol = pH->tree[idx]; - ofs--; - } while (symbol < 0); - - get_bits_no_markers(8 + (23 - ofs)); - - extra_bits = get_bits_no_markers(symbol & 0xF); - } - else - { - if (symbol & 0x8000) - { - //get_bits_no_markers((symbol >> 8) & 31); - assert(((symbol >> 8) & 31) <= 15); - get_bits_no_markers((symbol >> 8) & 15); - extra_bits = symbol >> 16; - } - else - { - int code_size = (symbol >> 8) & 31; - int num_extra_bits = symbol & 0xF; - int bits = code_size + num_extra_bits; - - if (bits <= 16) - extra_bits = get_bits_no_markers(bits) & ((1 << num_extra_bits) - 1); - else - { - get_bits_no_markers(code_size); - extra_bits = get_bits_no_markers(num_extra_bits); - } - } - - symbol &= 0xFF; - } - - return symbol; - } - - // Tables and macro used to fully decode the DPCM differences. - static const int s_extend_test[16] = { 0, 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080, 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000 }; - static const int s_extend_offset[16] = { 0, -1, -3, -7, -15, -31, -63, -127, -255, -511, -1023, -2047, -4095, -8191, -16383, -32767 }; - //static const int s_extend_mask[] = { 0, (1 << 0), (1 << 1), (1 << 2), (1 << 3), (1 << 4), (1 << 5), (1 << 6), (1 << 7), (1 << 8), (1 << 9), (1 << 10), (1 << 11), (1 << 12), (1 << 13), (1 << 14), (1 << 15), (1 << 16) }; - -#define JPGD_HUFF_EXTEND(x, s) (((x) < s_extend_test[s & 15]) ? ((x) + s_extend_offset[s & 15]) : (x)) - - // Unconditionally frees all allocated m_blocks. - void jpeg_decoder::free_all_blocks() - { - m_pStream = nullptr; - for (mem_block* b = m_pMem_blocks; b; ) - { - mem_block* n = b->m_pNext; - jpgd_free(b); - b = n; - } - m_pMem_blocks = nullptr; - } - - // This method handles all errors. It will never return. - // It could easily be changed to use C++ exceptions. - JPGD_NORETURN void jpeg_decoder::stop_decoding(jpgd_status status) - { - m_error_code = status; - free_all_blocks(); - longjmp(m_jmp_state, status); - } - - void* jpeg_decoder::alloc(size_t nSize, bool zero) - { - nSize = (JPGD_MAX(nSize, 1) + 3) & ~3; - char* rv = nullptr; - for (mem_block* b = m_pMem_blocks; b; b = b->m_pNext) - { - if ((b->m_used_count + nSize) <= b->m_size) - { - rv = b->m_data + b->m_used_count; - b->m_used_count += nSize; - break; - } - } - if (!rv) - { - int capacity = JPGD_MAX(32768 - 256, ((int)nSize + 2047) & ~2047); - mem_block* b = (mem_block*)jpgd_malloc(sizeof(mem_block) + capacity); - if (!b) - { - stop_decoding(JPGD_NOTENOUGHMEM); - } - - b->m_pNext = m_pMem_blocks; - m_pMem_blocks = b; - b->m_used_count = nSize; - b->m_size = capacity; - rv = b->m_data; - } - if (zero) memset(rv, 0, nSize); - return rv; - } - - void jpeg_decoder::word_clear(void* p, uint16 c, uint n) - { - uint8* pD = (uint8*)p; - const uint8 l = c & 0xFF, h = (c >> 8) & 0xFF; - while (n) - { - pD[0] = l; - pD[1] = h; - pD += 2; - n--; - } - } - - // Refill the input buffer. - // This method will sit in a loop until (A) the buffer is full or (B) - // the stream's read() method reports and end of file condition. - void jpeg_decoder::prep_in_buffer() - { - m_in_buf_left = 0; - m_pIn_buf_ofs = m_in_buf; - - if (m_eof_flag) - return; - - do - { - int bytes_read = m_pStream->read(m_in_buf + m_in_buf_left, JPGD_IN_BUF_SIZE - m_in_buf_left, &m_eof_flag); - if (bytes_read == -1) - stop_decoding(JPGD_STREAM_READ); - - m_in_buf_left += bytes_read; - } while ((m_in_buf_left < JPGD_IN_BUF_SIZE) && (!m_eof_flag)); - - m_total_bytes_read += m_in_buf_left; - - // Pad the end of the block with M_EOI (prevents the decompressor from going off the rails if the stream is invalid). - // (This dates way back to when this decompressor was written in C/asm, and the all-asm Huffman decoder did some fancy things to increase perf.) - word_clear(m_pIn_buf_ofs + m_in_buf_left, 0xD9FF, 64); - } - - // Read a Huffman code table. - void jpeg_decoder::read_dht_marker() - { - int i, index, count; - uint8 huff_num[17]; - uint8 huff_val[256]; - - uint num_left = get_bits(16); - - if (num_left < 2) - stop_decoding(JPGD_BAD_DHT_MARKER); - - num_left -= 2; - - while (num_left) - { - index = get_bits(8); - - huff_num[0] = 0; - - count = 0; - - for (i = 1; i <= 16; i++) - { - huff_num[i] = static_cast(get_bits(8)); - count += huff_num[i]; - } - - if (count > 255) - stop_decoding(JPGD_BAD_DHT_COUNTS); - - bool symbol_present[256]; - memset(symbol_present, 0, sizeof(symbol_present)); - - for (i = 0; i < count; i++) - { - const int s = get_bits(8); - - // Check for obviously bogus tables. - if (symbol_present[s]) - stop_decoding(JPGD_BAD_DHT_COUNTS); - - huff_val[i] = static_cast(s); - symbol_present[s] = true; - } - - i = 1 + 16 + count; - - if (num_left < (uint)i) - stop_decoding(JPGD_BAD_DHT_MARKER); - - num_left -= i; - - if ((index & 0x10) > 0x10) - stop_decoding(JPGD_BAD_DHT_INDEX); - - index = (index & 0x0F) + ((index & 0x10) >> 4) * (JPGD_MAX_HUFF_TABLES >> 1); - - if (index >= JPGD_MAX_HUFF_TABLES) - stop_decoding(JPGD_BAD_DHT_INDEX); - - if (!m_huff_num[index]) - m_huff_num[index] = (uint8*)alloc(17); - - if (!m_huff_val[index]) - m_huff_val[index] = (uint8*)alloc(256); - - m_huff_ac[index] = (index & 0x10) != 0; - memcpy(m_huff_num[index], huff_num, 17); - memcpy(m_huff_val[index], huff_val, 256); - } - } - - // Read a quantization table. - void jpeg_decoder::read_dqt_marker() - { - int n, i, prec; - uint num_left; - uint temp; - - num_left = get_bits(16); - - if (num_left < 2) - stop_decoding(JPGD_BAD_DQT_MARKER); - - num_left -= 2; - - while (num_left) - { - n = get_bits(8); - prec = n >> 4; - n &= 0x0F; - - if (n >= JPGD_MAX_QUANT_TABLES) - stop_decoding(JPGD_BAD_DQT_TABLE); - - if (!m_quant[n]) - m_quant[n] = (jpgd_quant_t*)alloc(64 * sizeof(jpgd_quant_t)); - - // read quantization entries, in zag order - for (i = 0; i < 64; i++) - { - temp = get_bits(8); - - if (prec) - temp = (temp << 8) + get_bits(8); - - m_quant[n][i] = static_cast(temp); - } - - i = 64 + 1; - - if (prec) - i += 64; - - if (num_left < (uint)i) - stop_decoding(JPGD_BAD_DQT_LENGTH); - - num_left -= i; - } - } - - // Read the start of frame (SOF) marker. - void jpeg_decoder::read_sof_marker() - { - int i; - uint num_left; - - num_left = get_bits(16); - - /* precision: sorry, only 8-bit precision is supported */ - if (get_bits(8) != 8) - stop_decoding(JPGD_BAD_PRECISION); - - m_image_y_size = get_bits(16); - - if ((m_image_y_size < 1) || (m_image_y_size > JPGD_MAX_HEIGHT)) - stop_decoding(JPGD_BAD_HEIGHT); - - m_image_x_size = get_bits(16); - - if ((m_image_x_size < 1) || (m_image_x_size > JPGD_MAX_WIDTH)) - stop_decoding(JPGD_BAD_WIDTH); - - m_comps_in_frame = get_bits(8); - - if (m_comps_in_frame > JPGD_MAX_COMPONENTS) - stop_decoding(JPGD_TOO_MANY_COMPONENTS); - - if (num_left != (uint)(m_comps_in_frame * 3 + 8)) - stop_decoding(JPGD_BAD_SOF_LENGTH); - - for (i = 0; i < m_comps_in_frame; i++) - { - m_comp_ident[i] = get_bits(8); - m_comp_h_samp[i] = get_bits(4); - m_comp_v_samp[i] = get_bits(4); - - if (!m_comp_h_samp[i] || !m_comp_v_samp[i] || (m_comp_h_samp[i] > 2) || (m_comp_v_samp[i] > 2)) - stop_decoding(JPGD_UNSUPPORTED_SAMP_FACTORS); - - m_comp_quant[i] = get_bits(8); - if (m_comp_quant[i] >= JPGD_MAX_QUANT_TABLES) - stop_decoding(JPGD_DECODE_ERROR); - } - } - - // Used to skip unrecognized markers. - void jpeg_decoder::skip_variable_marker() - { - uint num_left; - - num_left = get_bits(16); - - if (num_left < 2) - stop_decoding(JPGD_BAD_VARIABLE_MARKER); - - num_left -= 2; - - while (num_left) - { - get_bits(8); - num_left--; - } - } - - // Read a define restart interval (DRI) marker. - void jpeg_decoder::read_dri_marker() - { - if (get_bits(16) != 4) - stop_decoding(JPGD_BAD_DRI_LENGTH); - - m_restart_interval = get_bits(16); - } - - // Read a start of scan (SOS) marker. - void jpeg_decoder::read_sos_marker() - { - uint num_left; - int i, ci, n, c, cc; - - num_left = get_bits(16); - - n = get_bits(8); - - m_comps_in_scan = n; - - num_left -= 3; - - if ((num_left != (uint)(n * 2 + 3)) || (n < 1) || (n > JPGD_MAX_COMPS_IN_SCAN)) - stop_decoding(JPGD_BAD_SOS_LENGTH); - - for (i = 0; i < n; i++) - { - cc = get_bits(8); - c = get_bits(8); - num_left -= 2; - - for (ci = 0; ci < m_comps_in_frame; ci++) - if (cc == m_comp_ident[ci]) - break; - - if (ci >= m_comps_in_frame) - stop_decoding(JPGD_BAD_SOS_COMP_ID); - - if (ci >= JPGD_MAX_COMPONENTS) - stop_decoding(JPGD_DECODE_ERROR); - - m_comp_list[i] = ci; - - m_comp_dc_tab[ci] = (c >> 4) & 15; - m_comp_ac_tab[ci] = (c & 15) + (JPGD_MAX_HUFF_TABLES >> 1); - - if (m_comp_dc_tab[ci] >= JPGD_MAX_HUFF_TABLES) - stop_decoding(JPGD_DECODE_ERROR); - - if (m_comp_ac_tab[ci] >= JPGD_MAX_HUFF_TABLES) - stop_decoding(JPGD_DECODE_ERROR); - } - - m_spectral_start = get_bits(8); - m_spectral_end = get_bits(8); - m_successive_high = get_bits(4); - m_successive_low = get_bits(4); - - if (!m_progressive_flag) - { - m_spectral_start = 0; - m_spectral_end = 63; - } - - num_left -= 3; - - /* read past whatever is num_left */ - while (num_left) - { - get_bits(8); - num_left--; - } - } - - // Finds the next marker. - int jpeg_decoder::next_marker() - { - uint c, bytes; - - bytes = 0; - - do - { - do - { - bytes++; - c = get_bits(8); - } while (c != 0xFF); - - do - { - c = get_bits(8); - } while (c == 0xFF); - - } while (c == 0); - - // If bytes > 0 here, there where extra bytes before the marker (not good). - - return c; - } - - // Process markers. Returns when an SOFx, SOI, EOI, or SOS marker is - // encountered. - int jpeg_decoder::process_markers() - { - int c; - - for (; ; ) - { - c = next_marker(); - - switch (c) - { - case M_SOF0: - case M_SOF1: - case M_SOF2: - case M_SOF3: - case M_SOF5: - case M_SOF6: - case M_SOF7: - // case M_JPG: - case M_SOF9: - case M_SOF10: - case M_SOF11: - case M_SOF13: - case M_SOF14: - case M_SOF15: - case M_SOI: - case M_EOI: - case M_SOS: - { - return c; - } - case M_DHT: - { - read_dht_marker(); - break; - } - // No arithmitic support - dumb patents! - case M_DAC: - { - stop_decoding(JPGD_NO_ARITHMITIC_SUPPORT); - break; - } - case M_DQT: - { - read_dqt_marker(); - break; - } - case M_DRI: - { - read_dri_marker(); - break; - } - //case M_APP0: /* no need to read the JFIF marker */ - case M_JPG: - case M_RST0: /* no parameters */ - case M_RST1: - case M_RST2: - case M_RST3: - case M_RST4: - case M_RST5: - case M_RST6: - case M_RST7: - case M_TEM: - { - stop_decoding(JPGD_UNEXPECTED_MARKER); - break; - } - default: /* must be DNL, DHP, EXP, APPn, JPGn, COM, or RESn or APP0 */ - { - skip_variable_marker(); - break; - } - } - } - } - - // Finds the start of image (SOI) marker. - void jpeg_decoder::locate_soi_marker() - { - uint lastchar, thischar; - uint bytesleft; - - lastchar = get_bits(8); - - thischar = get_bits(8); - - /* ok if it's a normal JPEG file without a special header */ - - if ((lastchar == 0xFF) && (thischar == M_SOI)) - return; - - bytesleft = 4096; - - for (; ; ) - { - if (--bytesleft == 0) - stop_decoding(JPGD_NOT_JPEG); - - lastchar = thischar; - - thischar = get_bits(8); - - if (lastchar == 0xFF) - { - if (thischar == M_SOI) - break; - else if (thischar == M_EOI) // get_bits will keep returning M_EOI if we read past the end - stop_decoding(JPGD_NOT_JPEG); - } - } - - // Check the next character after marker: if it's not 0xFF, it can't be the start of the next marker, so the file is bad. - thischar = (m_bit_buf >> 24) & 0xFF; - - if (thischar != 0xFF) - stop_decoding(JPGD_NOT_JPEG); - } - - // Find a start of frame (SOF) marker. - void jpeg_decoder::locate_sof_marker() - { - locate_soi_marker(); - - int c = process_markers(); - - switch (c) - { - case M_SOF2: - { - m_progressive_flag = JPGD_TRUE; - read_sof_marker(); - break; - } - case M_SOF0: /* baseline DCT */ - case M_SOF1: /* extended sequential DCT */ - { - read_sof_marker(); - break; - } - case M_SOF9: /* Arithmitic coding */ - { - stop_decoding(JPGD_NO_ARITHMITIC_SUPPORT); - break; - } - default: - { - stop_decoding(JPGD_UNSUPPORTED_MARKER); - break; - } - } - } - - // Find a start of scan (SOS) marker. - int jpeg_decoder::locate_sos_marker() - { - int c; - - c = process_markers(); - - if (c == M_EOI) - return JPGD_FALSE; - else if (c != M_SOS) - stop_decoding(JPGD_UNEXPECTED_MARKER); - - read_sos_marker(); - - return JPGD_TRUE; - } - - // Reset everything to default/uninitialized state. - void jpeg_decoder::init(jpeg_decoder_stream* pStream, uint32_t flags) - { - m_flags = flags; - m_pMem_blocks = nullptr; - m_error_code = JPGD_SUCCESS; - m_ready_flag = false; - m_image_x_size = m_image_y_size = 0; - m_pStream = pStream; - m_progressive_flag = JPGD_FALSE; - - memset(m_huff_ac, 0, sizeof(m_huff_ac)); - memset(m_huff_num, 0, sizeof(m_huff_num)); - memset(m_huff_val, 0, sizeof(m_huff_val)); - memset(m_quant, 0, sizeof(m_quant)); - - m_scan_type = 0; - m_comps_in_frame = 0; - - memset(m_comp_h_samp, 0, sizeof(m_comp_h_samp)); - memset(m_comp_v_samp, 0, sizeof(m_comp_v_samp)); - memset(m_comp_quant, 0, sizeof(m_comp_quant)); - memset(m_comp_ident, 0, sizeof(m_comp_ident)); - memset(m_comp_h_blocks, 0, sizeof(m_comp_h_blocks)); - memset(m_comp_v_blocks, 0, sizeof(m_comp_v_blocks)); - - m_comps_in_scan = 0; - memset(m_comp_list, 0, sizeof(m_comp_list)); - memset(m_comp_dc_tab, 0, sizeof(m_comp_dc_tab)); - memset(m_comp_ac_tab, 0, sizeof(m_comp_ac_tab)); - - m_spectral_start = 0; - m_spectral_end = 0; - m_successive_low = 0; - m_successive_high = 0; - m_max_mcu_x_size = 0; - m_max_mcu_y_size = 0; - m_blocks_per_mcu = 0; - m_max_blocks_per_row = 0; - m_mcus_per_row = 0; - m_mcus_per_col = 0; - - memset(m_mcu_org, 0, sizeof(m_mcu_org)); - - m_total_lines_left = 0; - m_mcu_lines_left = 0; - m_num_buffered_scanlines = 0; - m_real_dest_bytes_per_scan_line = 0; - m_dest_bytes_per_scan_line = 0; - m_dest_bytes_per_pixel = 0; - - memset(m_pHuff_tabs, 0, sizeof(m_pHuff_tabs)); - - memset(m_dc_coeffs, 0, sizeof(m_dc_coeffs)); - memset(m_ac_coeffs, 0, sizeof(m_ac_coeffs)); - memset(m_block_y_mcu, 0, sizeof(m_block_y_mcu)); - - m_eob_run = 0; - - m_pIn_buf_ofs = m_in_buf; - m_in_buf_left = 0; - m_eof_flag = false; - m_tem_flag = 0; - - memset(m_in_buf_pad_start, 0, sizeof(m_in_buf_pad_start)); - memset(m_in_buf, 0, sizeof(m_in_buf)); - memset(m_in_buf_pad_end, 0, sizeof(m_in_buf_pad_end)); - - m_restart_interval = 0; - m_restarts_left = 0; - m_next_restart_num = 0; - - m_max_mcus_per_row = 0; - m_max_blocks_per_mcu = 0; - m_max_mcus_per_col = 0; - - memset(m_last_dc_val, 0, sizeof(m_last_dc_val)); - m_pMCU_coefficients = nullptr; - m_pSample_buf = nullptr; - m_pSample_buf_prev = nullptr; - m_sample_buf_prev_valid = false; - - m_total_bytes_read = 0; - - m_pScan_line_0 = nullptr; - m_pScan_line_1 = nullptr; - - // Ready the input buffer. - prep_in_buffer(); - - // Prime the bit buffer. - m_bits_left = 16; - m_bit_buf = 0; - - get_bits(16); - get_bits(16); - - for (int i = 0; i < JPGD_MAX_BLOCKS_PER_MCU; i++) - m_mcu_block_max_zag[i] = 64; - } - -#define SCALEBITS 16 -#define ONE_HALF ((int) 1 << (SCALEBITS-1)) -#define FIX(x) ((int) ((x) * (1L<> SCALEBITS; - m_cbb[i] = (FIX(1.77200f) * k + ONE_HALF) >> SCALEBITS; - m_crg[i] = (-FIX(0.71414f)) * k; - m_cbg[i] = (-FIX(0.34414f)) * k + ONE_HALF; - } - } - - // This method throws back into the stream any bytes that where read - // into the bit buffer during initial marker scanning. - void jpeg_decoder::fix_in_buffer() - { - // In case any 0xFF's where pulled into the buffer during marker scanning. - assert((m_bits_left & 7) == 0); - - if (m_bits_left == 16) - stuff_char((uint8)(m_bit_buf & 0xFF)); - - if (m_bits_left >= 8) - stuff_char((uint8)((m_bit_buf >> 8) & 0xFF)); - - stuff_char((uint8)((m_bit_buf >> 16) & 0xFF)); - stuff_char((uint8)((m_bit_buf >> 24) & 0xFF)); - - m_bits_left = 16; - get_bits_no_markers(16); - get_bits_no_markers(16); - } - - void jpeg_decoder::transform_mcu(int mcu_row) - { - jpgd_block_t* pSrc_ptr = m_pMCU_coefficients; - if (mcu_row * m_blocks_per_mcu >= m_max_blocks_per_row) - stop_decoding(JPGD_DECODE_ERROR); - - uint8* pDst_ptr = m_pSample_buf + mcu_row * m_blocks_per_mcu * 64; - - for (int mcu_block = 0; mcu_block < m_blocks_per_mcu; mcu_block++) - { - idct(pSrc_ptr, pDst_ptr, m_mcu_block_max_zag[mcu_block]); - pSrc_ptr += 64; - pDst_ptr += 64; - } - } - - // Loads and dequantizes the next row of (already decoded) coefficients. - // Progressive images only. - void jpeg_decoder::load_next_row() - { - int i; - jpgd_block_t* p; - jpgd_quant_t* q; - int mcu_row, mcu_block, row_block = 0; - int component_num, component_id; - int block_x_mcu[JPGD_MAX_COMPONENTS]; - - memset(block_x_mcu, 0, JPGD_MAX_COMPONENTS * sizeof(int)); - - for (mcu_row = 0; mcu_row < m_mcus_per_row; mcu_row++) - { - int block_x_mcu_ofs = 0, block_y_mcu_ofs = 0; - - for (mcu_block = 0; mcu_block < m_blocks_per_mcu; mcu_block++) - { - component_id = m_mcu_org[mcu_block]; - if (m_comp_quant[component_id] >= JPGD_MAX_QUANT_TABLES) - stop_decoding(JPGD_DECODE_ERROR); - - q = m_quant[m_comp_quant[component_id]]; - - p = m_pMCU_coefficients + 64 * mcu_block; - - jpgd_block_t* pAC = coeff_buf_getp(m_ac_coeffs[component_id], block_x_mcu[component_id] + block_x_mcu_ofs, m_block_y_mcu[component_id] + block_y_mcu_ofs); - jpgd_block_t* pDC = coeff_buf_getp(m_dc_coeffs[component_id], block_x_mcu[component_id] + block_x_mcu_ofs, m_block_y_mcu[component_id] + block_y_mcu_ofs); - p[0] = pDC[0]; - memcpy(&p[1], &pAC[1], 63 * sizeof(jpgd_block_t)); - - for (i = 63; i > 0; i--) - if (p[g_ZAG[i]]) - break; - - m_mcu_block_max_zag[mcu_block] = i + 1; - - for (; i >= 0; i--) - if (p[g_ZAG[i]]) - p[g_ZAG[i]] = static_cast(p[g_ZAG[i]] * q[i]); - - row_block++; - - if (m_comps_in_scan == 1) - block_x_mcu[component_id]++; - else - { - if (++block_x_mcu_ofs == m_comp_h_samp[component_id]) - { - block_x_mcu_ofs = 0; - - if (++block_y_mcu_ofs == m_comp_v_samp[component_id]) - { - block_y_mcu_ofs = 0; - - block_x_mcu[component_id] += m_comp_h_samp[component_id]; - } - } - } - } - - transform_mcu(mcu_row); - } - - if (m_comps_in_scan == 1) - m_block_y_mcu[m_comp_list[0]]++; - else - { - for (component_num = 0; component_num < m_comps_in_scan; component_num++) - { - component_id = m_comp_list[component_num]; - - m_block_y_mcu[component_id] += m_comp_v_samp[component_id]; - } - } - } - - // Restart interval processing. - void jpeg_decoder::process_restart() - { - int i; - int c = 0; - - // Align to a byte boundry - // FIXME: Is this really necessary? get_bits_no_markers() never reads in markers! - //get_bits_no_markers(m_bits_left & 7); - - // Let's scan a little bit to find the marker, but not _too_ far. - // 1536 is a "fudge factor" that determines how much to scan. - for (i = 1536; i > 0; i--) - if (get_char() == 0xFF) - break; - - if (i == 0) - stop_decoding(JPGD_BAD_RESTART_MARKER); - - for (; i > 0; i--) - if ((c = get_char()) != 0xFF) - break; - - if (i == 0) - stop_decoding(JPGD_BAD_RESTART_MARKER); - - // Is it the expected marker? If not, something bad happened. - if (c != (m_next_restart_num + M_RST0)) - stop_decoding(JPGD_BAD_RESTART_MARKER); - - // Reset each component's DC prediction values. - memset(&m_last_dc_val, 0, m_comps_in_frame * sizeof(uint)); - - m_eob_run = 0; - - m_restarts_left = m_restart_interval; - - m_next_restart_num = (m_next_restart_num + 1) & 7; - - // Get the bit buffer going again... - - m_bits_left = 16; - get_bits_no_markers(16); - get_bits_no_markers(16); - } - - static inline int dequantize_ac(int c, int q) { c *= q; return c; } - - // Decodes and dequantizes the next row of coefficients. - void jpeg_decoder::decode_next_row() - { - int row_block = 0; - - for (int mcu_row = 0; mcu_row < m_mcus_per_row; mcu_row++) - { - if ((m_restart_interval) && (m_restarts_left == 0)) - process_restart(); - - jpgd_block_t* p = m_pMCU_coefficients; - for (int mcu_block = 0; mcu_block < m_blocks_per_mcu; mcu_block++, p += 64) - { - int component_id = m_mcu_org[mcu_block]; - if (m_comp_quant[component_id] >= JPGD_MAX_QUANT_TABLES) - stop_decoding(JPGD_DECODE_ERROR); - - jpgd_quant_t* q = m_quant[m_comp_quant[component_id]]; - - int r, s; - s = huff_decode(m_pHuff_tabs[m_comp_dc_tab[component_id]], r); - if (s >= 16) - stop_decoding(JPGD_DECODE_ERROR); - - s = JPGD_HUFF_EXTEND(r, s); - - m_last_dc_val[component_id] = (s += m_last_dc_val[component_id]); - - p[0] = static_cast(s * q[0]); - - int prev_num_set = m_mcu_block_max_zag[mcu_block]; - - huff_tables* pH = m_pHuff_tabs[m_comp_ac_tab[component_id]]; - - int k; - for (k = 1; k < 64; k++) - { - int extra_bits; - s = huff_decode(pH, extra_bits); - - r = s >> 4; - s &= 15; - - if (s) - { - if (r) - { - if ((k + r) > 63) - stop_decoding(JPGD_DECODE_ERROR); - - if (k < prev_num_set) - { - int n = JPGD_MIN(r, prev_num_set - k); - int kt = k; - while (n--) - p[g_ZAG[kt++]] = 0; - } - - k += r; - } - - s = JPGD_HUFF_EXTEND(extra_bits, s); - - if (k >= 64) - stop_decoding(JPGD_DECODE_ERROR); - - p[g_ZAG[k]] = static_cast(dequantize_ac(s, q[k])); //s * q[k]; - } - else - { - if (r == 15) - { - if ((k + 16) > 64) - stop_decoding(JPGD_DECODE_ERROR); - - if (k < prev_num_set) - { - int n = JPGD_MIN(16, prev_num_set - k); - int kt = k; - while (n--) - { - if (kt > 63) - stop_decoding(JPGD_DECODE_ERROR); - p[g_ZAG[kt++]] = 0; - } - } - - k += 16 - 1; // - 1 because the loop counter is k - - if (p[g_ZAG[k & 63]] != 0) - stop_decoding(JPGD_DECODE_ERROR); - } - else - break; - } - } - - if (k < prev_num_set) - { - int kt = k; - while (kt < prev_num_set) - p[g_ZAG[kt++]] = 0; - } - - m_mcu_block_max_zag[mcu_block] = k; - - row_block++; - } - - transform_mcu(mcu_row); - - m_restarts_left--; - } - } - - // YCbCr H1V1 (1x1:1:1, 3 m_blocks per MCU) to RGB - void jpeg_decoder::H1V1Convert() - { - int row = m_max_mcu_y_size - m_mcu_lines_left; - uint8* d = m_pScan_line_0; - uint8* s = m_pSample_buf + row * 8; - - for (int i = m_max_mcus_per_row; i > 0; i--) - { - for (int j = 0; j < 8; j++) - { - int y = s[j]; - int cb = s[64 + j]; - int cr = s[128 + j]; - - d[0] = clamp(y + m_crr[cr]); - d[1] = clamp(y + ((m_crg[cr] + m_cbg[cb]) >> 16)); - d[2] = clamp(y + m_cbb[cb]); - d[3] = 255; - - d += 4; - } - - s += 64 * 3; - } - } - - // YCbCr H2V1 (2x1:1:1, 4 m_blocks per MCU) to RGB - void jpeg_decoder::H2V1Convert() - { - int row = m_max_mcu_y_size - m_mcu_lines_left; - uint8* d0 = m_pScan_line_0; - uint8* y = m_pSample_buf + row * 8; - uint8* c = m_pSample_buf + 2 * 64 + row * 8; - - for (int i = m_max_mcus_per_row; i > 0; i--) - { - for (int l = 0; l < 2; l++) - { - for (int j = 0; j < 4; j++) - { - int cb = c[0]; - int cr = c[64]; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - int yy = y[j << 1]; - d0[0] = clamp(yy + rc); - d0[1] = clamp(yy + gc); - d0[2] = clamp(yy + bc); - d0[3] = 255; - - yy = y[(j << 1) + 1]; - d0[4] = clamp(yy + rc); - d0[5] = clamp(yy + gc); - d0[6] = clamp(yy + bc); - d0[7] = 255; - - d0 += 8; - - c++; - } - y += 64; - } - - y += 64 * 4 - 64 * 2; - c += 64 * 4 - 8; - } - } - - // YCbCr H2V1 (2x1:1:1, 4 m_blocks per MCU) to RGB - void jpeg_decoder::H2V1ConvertFiltered() - { - const uint BLOCKS_PER_MCU = 4; - int row = m_max_mcu_y_size - m_mcu_lines_left; - uint8* d0 = m_pScan_line_0; - - const int half_image_x_size = (m_image_x_size >> 1) - 1; - const int row_x8 = row * 8; - - for (int x = 0; x < m_image_x_size; x++) - { - int y = m_pSample_buf[check_sample_buf_ofs((x >> 4) * BLOCKS_PER_MCU * 64 + ((x & 8) ? 64 : 0) + (x & 7) + row_x8)]; - - int c_x0 = (x - 1) >> 1; - int c_x1 = JPGD_MIN(c_x0 + 1, half_image_x_size); - c_x0 = JPGD_MAX(c_x0, 0); - - int a = (c_x0 >> 3) * BLOCKS_PER_MCU * 64 + (c_x0 & 7) + row_x8 + 128; - int cb0 = m_pSample_buf[check_sample_buf_ofs(a)]; - int cr0 = m_pSample_buf[check_sample_buf_ofs(a + 64)]; - - int b = (c_x1 >> 3) * BLOCKS_PER_MCU * 64 + (c_x1 & 7) + row_x8 + 128; - int cb1 = m_pSample_buf[check_sample_buf_ofs(b)]; - int cr1 = m_pSample_buf[check_sample_buf_ofs(b + 64)]; - - int w0 = (x & 1) ? 3 : 1; - int w1 = (x & 1) ? 1 : 3; - - int cb = (cb0 * w0 + cb1 * w1 + 2) >> 2; - int cr = (cr0 * w0 + cr1 * w1 + 2) >> 2; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d0[0] = clamp(y + rc); - d0[1] = clamp(y + gc); - d0[2] = clamp(y + bc); - d0[3] = 255; - - d0 += 4; - } - } - - // YCbCr H2V1 (1x2:1:1, 4 m_blocks per MCU) to RGB - void jpeg_decoder::H1V2Convert() - { - int row = m_max_mcu_y_size - m_mcu_lines_left; - uint8* d0 = m_pScan_line_0; - uint8* d1 = m_pScan_line_1; - uint8* y; - uint8* c; - - if (row < 8) - y = m_pSample_buf + row * 8; - else - y = m_pSample_buf + 64 * 1 + (row & 7) * 8; - - c = m_pSample_buf + 64 * 2 + (row >> 1) * 8; - - for (int i = m_max_mcus_per_row; i > 0; i--) - { - for (int j = 0; j < 8; j++) - { - int cb = c[0 + j]; - int cr = c[64 + j]; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - int yy = y[j]; - d0[0] = clamp(yy + rc); - d0[1] = clamp(yy + gc); - d0[2] = clamp(yy + bc); - d0[3] = 255; - - yy = y[8 + j]; - d1[0] = clamp(yy + rc); - d1[1] = clamp(yy + gc); - d1[2] = clamp(yy + bc); - d1[3] = 255; - - d0 += 4; - d1 += 4; - } - - y += 64 * 4; - c += 64 * 4; - } - } - - // YCbCr H2V1 (1x2:1:1, 4 m_blocks per MCU) to RGB - void jpeg_decoder::H1V2ConvertFiltered() - { - const uint BLOCKS_PER_MCU = 4; - int y = m_image_y_size - m_total_lines_left; - int row = y & 15; - - const int half_image_y_size = (m_image_y_size >> 1) - 1; - - uint8* d0 = m_pScan_line_0; - - const int w0 = (row & 1) ? 3 : 1; - const int w1 = (row & 1) ? 1 : 3; - - int c_y0 = (y - 1) >> 1; - int c_y1 = JPGD_MIN(c_y0 + 1, half_image_y_size); - - const uint8_t* p_YSamples = m_pSample_buf; - const uint8_t* p_C0Samples = m_pSample_buf; - if ((c_y0 >= 0) && (((row & 15) == 0) || ((row & 15) == 15)) && (m_total_lines_left > 1)) - { - assert(y > 0); - assert(m_sample_buf_prev_valid); - - if ((row & 15) == 15) - p_YSamples = m_pSample_buf_prev; - - p_C0Samples = m_pSample_buf_prev; - } - - const int y_sample_base_ofs = ((row & 8) ? 64 : 0) + (row & 7) * 8; - const int y0_base = (c_y0 & 7) * 8 + 128; - const int y1_base = (c_y1 & 7) * 8 + 128; - - for (int x = 0; x < m_image_x_size; x++) - { - const int base_ofs = (x >> 3) * BLOCKS_PER_MCU * 64 + (x & 7); - - int y_sample = p_YSamples[check_sample_buf_ofs(base_ofs + y_sample_base_ofs)]; - - int a = base_ofs + y0_base; - int cb0_sample = p_C0Samples[check_sample_buf_ofs(a)]; - int cr0_sample = p_C0Samples[check_sample_buf_ofs(a + 64)]; - - int b = base_ofs + y1_base; - int cb1_sample = m_pSample_buf[check_sample_buf_ofs(b)]; - int cr1_sample = m_pSample_buf[check_sample_buf_ofs(b + 64)]; - - int cb = (cb0_sample * w0 + cb1_sample * w1 + 2) >> 2; - int cr = (cr0_sample * w0 + cr1_sample * w1 + 2) >> 2; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d0[0] = clamp(y_sample + rc); - d0[1] = clamp(y_sample + gc); - d0[2] = clamp(y_sample + bc); - d0[3] = 255; - - d0 += 4; - } - } - - // YCbCr H2V2 (2x2:1:1, 6 m_blocks per MCU) to RGB - void jpeg_decoder::H2V2Convert() - { - int row = m_max_mcu_y_size - m_mcu_lines_left; - uint8* d0 = m_pScan_line_0; - uint8* d1 = m_pScan_line_1; - uint8* y; - uint8* c; - - if (row < 8) - y = m_pSample_buf + row * 8; - else - y = m_pSample_buf + 64 * 2 + (row & 7) * 8; - - c = m_pSample_buf + 64 * 4 + (row >> 1) * 8; - - for (int i = m_max_mcus_per_row; i > 0; i--) - { - for (int l = 0; l < 2; l++) - { - for (int j = 0; j < 8; j += 2) - { - int cb = c[0]; - int cr = c[64]; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - int yy = y[j]; - d0[0] = clamp(yy + rc); - d0[1] = clamp(yy + gc); - d0[2] = clamp(yy + bc); - d0[3] = 255; - - yy = y[j + 1]; - d0[4] = clamp(yy + rc); - d0[5] = clamp(yy + gc); - d0[6] = clamp(yy + bc); - d0[7] = 255; - - yy = y[j + 8]; - d1[0] = clamp(yy + rc); - d1[1] = clamp(yy + gc); - d1[2] = clamp(yy + bc); - d1[3] = 255; - - yy = y[j + 8 + 1]; - d1[4] = clamp(yy + rc); - d1[5] = clamp(yy + gc); - d1[6] = clamp(yy + bc); - d1[7] = 255; - - d0 += 8; - d1 += 8; - - c++; - } - y += 64; - } - - y += 64 * 6 - 64 * 2; - c += 64 * 6 - 8; - } - } - - uint32_t jpeg_decoder::H2V2ConvertFiltered() - { - const uint BLOCKS_PER_MCU = 6; - int y = m_image_y_size - m_total_lines_left; - int row = y & 15; - - const int half_image_y_size = (m_image_y_size >> 1) - 1; - - uint8* d0 = m_pScan_line_0; - - int c_y0 = (y - 1) >> 1; - int c_y1 = JPGD_MIN(c_y0 + 1, half_image_y_size); - - const uint8_t* p_YSamples = m_pSample_buf; - const uint8_t* p_C0Samples = m_pSample_buf; - if ((c_y0 >= 0) && (((row & 15) == 0) || ((row & 15) == 15)) && (m_total_lines_left > 1)) - { - assert(y > 0); - assert(m_sample_buf_prev_valid); - - if ((row & 15) == 15) - p_YSamples = m_pSample_buf_prev; - - p_C0Samples = m_pSample_buf_prev; - } - - const int y_sample_base_ofs = ((row & 8) ? 128 : 0) + (row & 7) * 8; - const int y0_base = (c_y0 & 7) * 8 + 256; - const int y1_base = (c_y1 & 7) * 8 + 256; - - const int half_image_x_size = (m_image_x_size >> 1) - 1; - - static const uint8_t s_muls[2][2][4] = - { - { { 1, 3, 3, 9 }, { 3, 9, 1, 3 }, }, - { { 3, 1, 9, 3 }, { 9, 3, 3, 1 } } - }; - - if (((row & 15) >= 1) && ((row & 15) <= 14)) - { - assert((row & 1) == 1); - assert(((y + 1 - 1) >> 1) == c_y0); - - assert(p_YSamples == m_pSample_buf); - assert(p_C0Samples == m_pSample_buf); - - uint8* d1 = m_pScan_line_1; - const int y_sample_base_ofs1 = (((row + 1) & 8) ? 128 : 0) + ((row + 1) & 7) * 8; - - for (int x = 0; x < m_image_x_size; x++) - { - int k = (x >> 4) * BLOCKS_PER_MCU * 64 + ((x & 8) ? 64 : 0) + (x & 7); - int y_sample0 = p_YSamples[check_sample_buf_ofs(k + y_sample_base_ofs)]; - int y_sample1 = p_YSamples[check_sample_buf_ofs(k + y_sample_base_ofs1)]; - - int c_x0 = (x - 1) >> 1; - int c_x1 = JPGD_MIN(c_x0 + 1, half_image_x_size); - c_x0 = JPGD_MAX(c_x0, 0); - - int a = (c_x0 >> 3) * BLOCKS_PER_MCU * 64 + (c_x0 & 7); - int cb00_sample = p_C0Samples[check_sample_buf_ofs(a + y0_base)]; - int cr00_sample = p_C0Samples[check_sample_buf_ofs(a + y0_base + 64)]; - - int cb01_sample = m_pSample_buf[check_sample_buf_ofs(a + y1_base)]; - int cr01_sample = m_pSample_buf[check_sample_buf_ofs(a + y1_base + 64)]; - - int b = (c_x1 >> 3) * BLOCKS_PER_MCU * 64 + (c_x1 & 7); - int cb10_sample = p_C0Samples[check_sample_buf_ofs(b + y0_base)]; - int cr10_sample = p_C0Samples[check_sample_buf_ofs(b + y0_base + 64)]; - - int cb11_sample = m_pSample_buf[check_sample_buf_ofs(b + y1_base)]; - int cr11_sample = m_pSample_buf[check_sample_buf_ofs(b + y1_base + 64)]; - - { - const uint8_t* pMuls = &s_muls[row & 1][x & 1][0]; - int cb = (cb00_sample * pMuls[0] + cb01_sample * pMuls[1] + cb10_sample * pMuls[2] + cb11_sample * pMuls[3] + 8) >> 4; - int cr = (cr00_sample * pMuls[0] + cr01_sample * pMuls[1] + cr10_sample * pMuls[2] + cr11_sample * pMuls[3] + 8) >> 4; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d0[0] = clamp(y_sample0 + rc); - d0[1] = clamp(y_sample0 + gc); - d0[2] = clamp(y_sample0 + bc); - d0[3] = 255; - - d0 += 4; - } - - { - const uint8_t* pMuls = &s_muls[(row + 1) & 1][x & 1][0]; - int cb = (cb00_sample * pMuls[0] + cb01_sample * pMuls[1] + cb10_sample * pMuls[2] + cb11_sample * pMuls[3] + 8) >> 4; - int cr = (cr00_sample * pMuls[0] + cr01_sample * pMuls[1] + cr10_sample * pMuls[2] + cr11_sample * pMuls[3] + 8) >> 4; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d1[0] = clamp(y_sample1 + rc); - d1[1] = clamp(y_sample1 + gc); - d1[2] = clamp(y_sample1 + bc); - d1[3] = 255; - - d1 += 4; - } - - if (((x & 1) == 1) && (x < m_image_x_size - 1)) - { - const int nx = x + 1; - assert(c_x0 == (nx - 1) >> 1); - - k = (nx >> 4) * BLOCKS_PER_MCU * 64 + ((nx & 8) ? 64 : 0) + (nx & 7); - y_sample0 = p_YSamples[check_sample_buf_ofs(k + y_sample_base_ofs)]; - y_sample1 = p_YSamples[check_sample_buf_ofs(k + y_sample_base_ofs1)]; - - { - const uint8_t* pMuls = &s_muls[row & 1][nx & 1][0]; - int cb = (cb00_sample * pMuls[0] + cb01_sample * pMuls[1] + cb10_sample * pMuls[2] + cb11_sample * pMuls[3] + 8) >> 4; - int cr = (cr00_sample * pMuls[0] + cr01_sample * pMuls[1] + cr10_sample * pMuls[2] + cr11_sample * pMuls[3] + 8) >> 4; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d0[0] = clamp(y_sample0 + rc); - d0[1] = clamp(y_sample0 + gc); - d0[2] = clamp(y_sample0 + bc); - d0[3] = 255; - - d0 += 4; - } - - { - const uint8_t* pMuls = &s_muls[(row + 1) & 1][nx & 1][0]; - int cb = (cb00_sample * pMuls[0] + cb01_sample * pMuls[1] + cb10_sample * pMuls[2] + cb11_sample * pMuls[3] + 8) >> 4; - int cr = (cr00_sample * pMuls[0] + cr01_sample * pMuls[1] + cr10_sample * pMuls[2] + cr11_sample * pMuls[3] + 8) >> 4; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d1[0] = clamp(y_sample1 + rc); - d1[1] = clamp(y_sample1 + gc); - d1[2] = clamp(y_sample1 + bc); - d1[3] = 255; - - d1 += 4; - } - - ++x; - } - } - - return 2; - } - else - { - for (int x = 0; x < m_image_x_size; x++) - { - int y_sample = p_YSamples[check_sample_buf_ofs((x >> 4) * BLOCKS_PER_MCU * 64 + ((x & 8) ? 64 : 0) + (x & 7) + y_sample_base_ofs)]; - - int c_x0 = (x - 1) >> 1; - int c_x1 = JPGD_MIN(c_x0 + 1, half_image_x_size); - c_x0 = JPGD_MAX(c_x0, 0); - - int a = (c_x0 >> 3) * BLOCKS_PER_MCU * 64 + (c_x0 & 7); - int cb00_sample = p_C0Samples[check_sample_buf_ofs(a + y0_base)]; - int cr00_sample = p_C0Samples[check_sample_buf_ofs(a + y0_base + 64)]; - - int cb01_sample = m_pSample_buf[check_sample_buf_ofs(a + y1_base)]; - int cr01_sample = m_pSample_buf[check_sample_buf_ofs(a + y1_base + 64)]; - - int b = (c_x1 >> 3) * BLOCKS_PER_MCU * 64 + (c_x1 & 7); - int cb10_sample = p_C0Samples[check_sample_buf_ofs(b + y0_base)]; - int cr10_sample = p_C0Samples[check_sample_buf_ofs(b + y0_base + 64)]; - - int cb11_sample = m_pSample_buf[check_sample_buf_ofs(b + y1_base)]; - int cr11_sample = m_pSample_buf[check_sample_buf_ofs(b + y1_base + 64)]; - - const uint8_t* pMuls = &s_muls[row & 1][x & 1][0]; - int cb = (cb00_sample * pMuls[0] + cb01_sample * pMuls[1] + cb10_sample * pMuls[2] + cb11_sample * pMuls[3] + 8) >> 4; - int cr = (cr00_sample * pMuls[0] + cr01_sample * pMuls[1] + cr10_sample * pMuls[2] + cr11_sample * pMuls[3] + 8) >> 4; - - int rc = m_crr[cr]; - int gc = ((m_crg[cr] + m_cbg[cb]) >> 16); - int bc = m_cbb[cb]; - - d0[0] = clamp(y_sample + rc); - d0[1] = clamp(y_sample + gc); - d0[2] = clamp(y_sample + bc); - d0[3] = 255; - - d0 += 4; - } - - return 1; - } - } - - // Y (1 block per MCU) to 8-bit grayscale - void jpeg_decoder::gray_convert() - { - int row = m_max_mcu_y_size - m_mcu_lines_left; - uint8* d = m_pScan_line_0; - uint8* s = m_pSample_buf + row * 8; - - for (int i = m_max_mcus_per_row; i > 0; i--) - { - *(uint*)d = *(uint*)s; - *(uint*)(&d[4]) = *(uint*)(&s[4]); - - s += 64; - d += 8; - } - } - - // Find end of image (EOI) marker, so we can return to the user the exact size of the input stream. - void jpeg_decoder::find_eoi() - { - if (!m_progressive_flag) - { - // Attempt to read the EOI marker. - //get_bits_no_markers(m_bits_left & 7); - - // Prime the bit buffer - m_bits_left = 16; - get_bits(16); - get_bits(16); - - // The next marker _should_ be EOI - process_markers(); - } - - m_total_bytes_read -= m_in_buf_left; - } - - int jpeg_decoder::decode_next_mcu_row() - { - if (setjmp(m_jmp_state)) - return JPGD_FAILED; - - const bool chroma_y_filtering = (m_flags & cFlagLinearChromaFiltering) && ((m_scan_type == JPGD_YH2V2) || (m_scan_type == JPGD_YH1V2)) && (m_image_x_size >= 2) && (m_image_y_size >= 2); - if (chroma_y_filtering) - { - std::swap(m_pSample_buf, m_pSample_buf_prev); - - m_sample_buf_prev_valid = true; - } - - if (m_progressive_flag) - load_next_row(); - else - decode_next_row(); - - // Find the EOI marker if that was the last row. - if (m_total_lines_left <= m_max_mcu_y_size) - find_eoi(); - - m_mcu_lines_left = m_max_mcu_y_size; - return 0; - } - - int jpeg_decoder::decode(const void** pScan_line, uint* pScan_line_len) - { - if ((m_error_code) || (!m_ready_flag)) - return JPGD_FAILED; - - if (m_total_lines_left == 0) - return JPGD_DONE; - - const bool chroma_y_filtering = (m_flags & cFlagLinearChromaFiltering) && ((m_scan_type == JPGD_YH2V2) || (m_scan_type == JPGD_YH1V2)) && (m_image_x_size >= 2) && (m_image_y_size >= 2); - - bool get_another_mcu_row = false; - bool got_mcu_early = false; - if (chroma_y_filtering) - { - if (m_total_lines_left == m_image_y_size) - get_another_mcu_row = true; - else if ((m_mcu_lines_left == 1) && (m_total_lines_left > 1)) - { - get_another_mcu_row = true; - got_mcu_early = true; - } - } - else - { - get_another_mcu_row = (m_mcu_lines_left == 0); - } - - if (get_another_mcu_row) - { - int status = decode_next_mcu_row(); - if (status != 0) - return status; - } - - switch (m_scan_type) - { - case JPGD_YH2V2: - { - if ((m_flags & cFlagLinearChromaFiltering) && (m_image_x_size >= 2) && (m_image_y_size >= 2)) - { - if (m_num_buffered_scanlines == 1) - { - *pScan_line = m_pScan_line_1; - } - else if (m_num_buffered_scanlines == 0) - { - m_num_buffered_scanlines = H2V2ConvertFiltered(); - *pScan_line = m_pScan_line_0; - } - - m_num_buffered_scanlines--; - } - else - { - if ((m_mcu_lines_left & 1) == 0) - { - H2V2Convert(); - *pScan_line = m_pScan_line_0; - } - else - *pScan_line = m_pScan_line_1; - } - - break; - } - case JPGD_YH2V1: - { - if ((m_flags & cFlagLinearChromaFiltering) && (m_image_x_size >= 2) && (m_image_y_size >= 2)) - H2V1ConvertFiltered(); - else - H2V1Convert(); - *pScan_line = m_pScan_line_0; - break; - } - case JPGD_YH1V2: - { - if (chroma_y_filtering) - { - H1V2ConvertFiltered(); - *pScan_line = m_pScan_line_0; - } - else - { - if ((m_mcu_lines_left & 1) == 0) - { - H1V2Convert(); - *pScan_line = m_pScan_line_0; - } - else - *pScan_line = m_pScan_line_1; - } - - break; - } - case JPGD_YH1V1: - { - H1V1Convert(); - *pScan_line = m_pScan_line_0; - break; - } - case JPGD_GRAYSCALE: - { - gray_convert(); - *pScan_line = m_pScan_line_0; - - break; - } - } - - *pScan_line_len = m_real_dest_bytes_per_scan_line; - - if (!got_mcu_early) - { - m_mcu_lines_left--; - } - - m_total_lines_left--; - - return JPGD_SUCCESS; - } - - // Creates the tables needed for efficient Huffman decoding. - void jpeg_decoder::make_huff_table(int index, huff_tables* pH) - { - int p, i, l, si; - uint8 huffsize[258]; - uint huffcode[258]; - uint code; - uint subtree; - int code_size; - int lastp; - int nextfreeentry; - int currententry; - - pH->ac_table = m_huff_ac[index] != 0; - - p = 0; - - for (l = 1; l <= 16; l++) - { - for (i = 1; i <= m_huff_num[index][l]; i++) - { - if (p >= 257) - stop_decoding(JPGD_DECODE_ERROR); - huffsize[p++] = static_cast(l); - } - } - - assert(p < 258); - huffsize[p] = 0; - - lastp = p; - - code = 0; - si = huffsize[0]; - p = 0; - - while (huffsize[p]) - { - while (huffsize[p] == si) - { - if (p >= 257) - stop_decoding(JPGD_DECODE_ERROR); - huffcode[p++] = code; - code++; - } - - code <<= 1; - si++; - } - - memset(pH->look_up, 0, sizeof(pH->look_up)); - memset(pH->look_up2, 0, sizeof(pH->look_up2)); - memset(pH->tree, 0, sizeof(pH->tree)); - memset(pH->code_size, 0, sizeof(pH->code_size)); - - nextfreeentry = -1; - - p = 0; - - while (p < lastp) - { - i = m_huff_val[index][p]; - - code = huffcode[p]; - code_size = huffsize[p]; - - assert(i < JPGD_HUFF_CODE_SIZE_MAX_LENGTH); - pH->code_size[i] = static_cast(code_size); - - if (code_size <= 8) - { - code <<= (8 - code_size); - - for (l = 1 << (8 - code_size); l > 0; l--) - { - if (code >= 256) - stop_decoding(JPGD_DECODE_ERROR); - - pH->look_up[code] = i; - - bool has_extrabits = false; - int extra_bits = 0; - int num_extra_bits = i & 15; - - int bits_to_fetch = code_size; - if (num_extra_bits) - { - int total_codesize = code_size + num_extra_bits; - if (total_codesize <= 8) - { - has_extrabits = true; - extra_bits = ((1 << num_extra_bits) - 1) & (code >> (8 - total_codesize)); - - if (extra_bits > 0x7FFF) - stop_decoding(JPGD_DECODE_ERROR); - - bits_to_fetch += num_extra_bits; - } - } - - if (!has_extrabits) - pH->look_up2[code] = i | (bits_to_fetch << 8); - else - pH->look_up2[code] = i | 0x8000 | (extra_bits << 16) | (bits_to_fetch << 8); - - code++; - } - } - else - { - subtree = (code >> (code_size - 8)) & 0xFF; - - currententry = pH->look_up[subtree]; - - if (currententry == 0) - { - pH->look_up[subtree] = currententry = nextfreeentry; - pH->look_up2[subtree] = currententry = nextfreeentry; - - nextfreeentry -= 2; - } - - code <<= (16 - (code_size - 8)); - - for (l = code_size; l > 9; l--) - { - if ((code & 0x8000) == 0) - currententry--; - - unsigned int idx = -currententry - 1; - - if (idx >= JPGD_HUFF_TREE_MAX_LENGTH) - stop_decoding(JPGD_DECODE_ERROR); - - if (pH->tree[idx] == 0) - { - pH->tree[idx] = nextfreeentry; - - currententry = nextfreeentry; - - nextfreeentry -= 2; - } - else - { - currententry = pH->tree[idx]; - } - - code <<= 1; - } - - if ((code & 0x8000) == 0) - currententry--; - - if ((-currententry - 1) >= JPGD_HUFF_TREE_MAX_LENGTH) - stop_decoding(JPGD_DECODE_ERROR); - - pH->tree[-currententry - 1] = i; - } - - p++; - } - } - - // Verifies the quantization tables needed for this scan are available. - void jpeg_decoder::check_quant_tables() - { - for (int i = 0; i < m_comps_in_scan; i++) - if (m_quant[m_comp_quant[m_comp_list[i]]] == nullptr) - stop_decoding(JPGD_UNDEFINED_QUANT_TABLE); - } - - // Verifies that all the Huffman tables needed for this scan are available. - void jpeg_decoder::check_huff_tables() - { - for (int i = 0; i < m_comps_in_scan; i++) - { - if ((m_spectral_start == 0) && (m_huff_num[m_comp_dc_tab[m_comp_list[i]]] == nullptr)) - stop_decoding(JPGD_UNDEFINED_HUFF_TABLE); - - if ((m_spectral_end > 0) && (m_huff_num[m_comp_ac_tab[m_comp_list[i]]] == nullptr)) - stop_decoding(JPGD_UNDEFINED_HUFF_TABLE); - } - - for (int i = 0; i < JPGD_MAX_HUFF_TABLES; i++) - if (m_huff_num[i]) - { - if (!m_pHuff_tabs[i]) - m_pHuff_tabs[i] = (huff_tables*)alloc(sizeof(huff_tables)); - - make_huff_table(i, m_pHuff_tabs[i]); - } - } - - // Determines the component order inside each MCU. - // Also calcs how many MCU's are on each row, etc. - bool jpeg_decoder::calc_mcu_block_order() - { - int component_num, component_id; - int max_h_samp = 0, max_v_samp = 0; - - for (component_id = 0; component_id < m_comps_in_frame; component_id++) - { - if (m_comp_h_samp[component_id] > max_h_samp) - max_h_samp = m_comp_h_samp[component_id]; - - if (m_comp_v_samp[component_id] > max_v_samp) - max_v_samp = m_comp_v_samp[component_id]; - } - - for (component_id = 0; component_id < m_comps_in_frame; component_id++) - { - m_comp_h_blocks[component_id] = ((((m_image_x_size * m_comp_h_samp[component_id]) + (max_h_samp - 1)) / max_h_samp) + 7) / 8; - m_comp_v_blocks[component_id] = ((((m_image_y_size * m_comp_v_samp[component_id]) + (max_v_samp - 1)) / max_v_samp) + 7) / 8; - } - - if (m_comps_in_scan == 1) - { - m_mcus_per_row = m_comp_h_blocks[m_comp_list[0]]; - m_mcus_per_col = m_comp_v_blocks[m_comp_list[0]]; - } - else - { - m_mcus_per_row = (((m_image_x_size + 7) / 8) + (max_h_samp - 1)) / max_h_samp; - m_mcus_per_col = (((m_image_y_size + 7) / 8) + (max_v_samp - 1)) / max_v_samp; - } - - if (m_comps_in_scan == 1) - { - m_mcu_org[0] = m_comp_list[0]; - - m_blocks_per_mcu = 1; - } - else - { - m_blocks_per_mcu = 0; - - for (component_num = 0; component_num < m_comps_in_scan; component_num++) - { - int num_blocks; - - component_id = m_comp_list[component_num]; - - num_blocks = m_comp_h_samp[component_id] * m_comp_v_samp[component_id]; - - while (num_blocks--) - m_mcu_org[m_blocks_per_mcu++] = component_id; - } - } - - if (m_blocks_per_mcu > m_max_blocks_per_mcu) - return false; - - for (int mcu_block = 0; mcu_block < m_blocks_per_mcu; mcu_block++) - { - int comp_id = m_mcu_org[mcu_block]; - if (comp_id >= JPGD_MAX_QUANT_TABLES) - return false; - } - - return true; - } - - // Starts a new scan. - int jpeg_decoder::init_scan() - { - if (!locate_sos_marker()) - return JPGD_FALSE; - - if (!calc_mcu_block_order()) - return JPGD_FALSE; - - check_huff_tables(); - - check_quant_tables(); - - memset(m_last_dc_val, 0, m_comps_in_frame * sizeof(uint)); - - m_eob_run = 0; - - if (m_restart_interval) - { - m_restarts_left = m_restart_interval; - m_next_restart_num = 0; - } - - fix_in_buffer(); - - return JPGD_TRUE; - } - - // Starts a frame. Determines if the number of components or sampling factors - // are supported. - void jpeg_decoder::init_frame() - { - int i; - - if (m_comps_in_frame == 1) - { - if ((m_comp_h_samp[0] != 1) || (m_comp_v_samp[0] != 1)) - stop_decoding(JPGD_UNSUPPORTED_SAMP_FACTORS); - - m_scan_type = JPGD_GRAYSCALE; - m_max_blocks_per_mcu = 1; - m_max_mcu_x_size = 8; - m_max_mcu_y_size = 8; - } - else if (m_comps_in_frame == 3) - { - if (((m_comp_h_samp[1] != 1) || (m_comp_v_samp[1] != 1)) || - ((m_comp_h_samp[2] != 1) || (m_comp_v_samp[2] != 1))) - stop_decoding(JPGD_UNSUPPORTED_SAMP_FACTORS); - - if ((m_comp_h_samp[0] == 1) && (m_comp_v_samp[0] == 1)) - { - m_scan_type = JPGD_YH1V1; - - m_max_blocks_per_mcu = 3; - m_max_mcu_x_size = 8; - m_max_mcu_y_size = 8; - } - else if ((m_comp_h_samp[0] == 2) && (m_comp_v_samp[0] == 1)) - { - m_scan_type = JPGD_YH2V1; - m_max_blocks_per_mcu = 4; - m_max_mcu_x_size = 16; - m_max_mcu_y_size = 8; - } - else if ((m_comp_h_samp[0] == 1) && (m_comp_v_samp[0] == 2)) - { - m_scan_type = JPGD_YH1V2; - m_max_blocks_per_mcu = 4; - m_max_mcu_x_size = 8; - m_max_mcu_y_size = 16; - } - else if ((m_comp_h_samp[0] == 2) && (m_comp_v_samp[0] == 2)) - { - m_scan_type = JPGD_YH2V2; - m_max_blocks_per_mcu = 6; - m_max_mcu_x_size = 16; - m_max_mcu_y_size = 16; - } - else - stop_decoding(JPGD_UNSUPPORTED_SAMP_FACTORS); - } - else - stop_decoding(JPGD_UNSUPPORTED_COLORSPACE); - - m_max_mcus_per_row = (m_image_x_size + (m_max_mcu_x_size - 1)) / m_max_mcu_x_size; - m_max_mcus_per_col = (m_image_y_size + (m_max_mcu_y_size - 1)) / m_max_mcu_y_size; - - // These values are for the *destination* pixels: after conversion. - if (m_scan_type == JPGD_GRAYSCALE) - m_dest_bytes_per_pixel = 1; - else - m_dest_bytes_per_pixel = 4; - - m_dest_bytes_per_scan_line = ((m_image_x_size + 15) & 0xFFF0) * m_dest_bytes_per_pixel; - - m_real_dest_bytes_per_scan_line = (m_image_x_size * m_dest_bytes_per_pixel); - - // Initialize two scan line buffers. - m_pScan_line_0 = (uint8*)alloc(m_dest_bytes_per_scan_line, true); - if ((m_scan_type == JPGD_YH1V2) || (m_scan_type == JPGD_YH2V2)) - m_pScan_line_1 = (uint8*)alloc(m_dest_bytes_per_scan_line, true); - - m_max_blocks_per_row = m_max_mcus_per_row * m_max_blocks_per_mcu; - - // Should never happen - if (m_max_blocks_per_row > JPGD_MAX_BLOCKS_PER_ROW) - stop_decoding(JPGD_DECODE_ERROR); - - // Allocate the coefficient buffer, enough for one MCU - m_pMCU_coefficients = (jpgd_block_t*)alloc(m_max_blocks_per_mcu * 64 * sizeof(jpgd_block_t)); - - for (i = 0; i < m_max_blocks_per_mcu; i++) - m_mcu_block_max_zag[i] = 64; - - m_pSample_buf = (uint8*)alloc(m_max_blocks_per_row * 64); - m_pSample_buf_prev = (uint8*)alloc(m_max_blocks_per_row * 64); - - m_total_lines_left = m_image_y_size; - - m_mcu_lines_left = 0; - - create_look_ups(); - } - - // The coeff_buf series of methods originally stored the coefficients - // into a "virtual" file which was located in EMS, XMS, or a disk file. A cache - // was used to make this process more efficient. Now, we can store the entire - // thing in RAM. - jpeg_decoder::coeff_buf* jpeg_decoder::coeff_buf_open(int block_num_x, int block_num_y, int block_len_x, int block_len_y) - { - coeff_buf* cb = (coeff_buf*)alloc(sizeof(coeff_buf)); - - cb->block_num_x = block_num_x; - cb->block_num_y = block_num_y; - cb->block_len_x = block_len_x; - cb->block_len_y = block_len_y; - cb->block_size = (block_len_x * block_len_y) * sizeof(jpgd_block_t); - cb->pData = (uint8*)alloc(cb->block_size * block_num_x * block_num_y, true); - return cb; - } - - inline jpgd_block_t* jpeg_decoder::coeff_buf_getp(coeff_buf* cb, int block_x, int block_y) - { - if ((block_x >= cb->block_num_x) || (block_y >= cb->block_num_y)) - stop_decoding(JPGD_DECODE_ERROR); - - return (jpgd_block_t*)(cb->pData + block_x * cb->block_size + block_y * (cb->block_size * cb->block_num_x)); - } - - // The following methods decode the various types of m_blocks encountered - // in progressively encoded images. - void jpeg_decoder::decode_block_dc_first(jpeg_decoder* pD, int component_id, int block_x, int block_y) - { - int s, r; - jpgd_block_t* p = pD->coeff_buf_getp(pD->m_dc_coeffs[component_id], block_x, block_y); - - if ((s = pD->huff_decode(pD->m_pHuff_tabs[pD->m_comp_dc_tab[component_id]])) != 0) - { - if (s >= 16) - pD->stop_decoding(JPGD_DECODE_ERROR); - - r = pD->get_bits_no_markers(s); - s = JPGD_HUFF_EXTEND(r, s); - } - - pD->m_last_dc_val[component_id] = (s += pD->m_last_dc_val[component_id]); - - p[0] = static_cast(s << pD->m_successive_low); - } - - void jpeg_decoder::decode_block_dc_refine(jpeg_decoder* pD, int component_id, int block_x, int block_y) - { - if (pD->get_bits_no_markers(1)) - { - jpgd_block_t* p = pD->coeff_buf_getp(pD->m_dc_coeffs[component_id], block_x, block_y); - - p[0] |= (1 << pD->m_successive_low); - } - } - - void jpeg_decoder::decode_block_ac_first(jpeg_decoder* pD, int component_id, int block_x, int block_y) - { - int k, s, r; - - if (pD->m_eob_run) - { - pD->m_eob_run--; - return; - } - - jpgd_block_t* p = pD->coeff_buf_getp(pD->m_ac_coeffs[component_id], block_x, block_y); - - for (k = pD->m_spectral_start; k <= pD->m_spectral_end; k++) - { - unsigned int idx = pD->m_comp_ac_tab[component_id]; - if (idx >= JPGD_MAX_HUFF_TABLES) - pD->stop_decoding(JPGD_DECODE_ERROR); - - s = pD->huff_decode(pD->m_pHuff_tabs[idx]); - - r = s >> 4; - s &= 15; - - if (s) - { - if ((k += r) > 63) - pD->stop_decoding(JPGD_DECODE_ERROR); - - r = pD->get_bits_no_markers(s); - s = JPGD_HUFF_EXTEND(r, s); - - p[g_ZAG[k]] = static_cast(s << pD->m_successive_low); - } - else - { - if (r == 15) - { - if ((k += 15) > 63) - pD->stop_decoding(JPGD_DECODE_ERROR); - } - else - { - pD->m_eob_run = 1 << r; - - if (r) - pD->m_eob_run += pD->get_bits_no_markers(r); - - pD->m_eob_run--; - - break; - } - } - } - } - - void jpeg_decoder::decode_block_ac_refine(jpeg_decoder* pD, int component_id, int block_x, int block_y) - { - int s, k, r; - - int p1 = 1 << pD->m_successive_low; - - //int m1 = (-1) << pD->m_successive_low; - int m1 = static_cast((UINT32_MAX << pD->m_successive_low)); - - jpgd_block_t* p = pD->coeff_buf_getp(pD->m_ac_coeffs[component_id], block_x, block_y); - if (pD->m_spectral_end > 63) - pD->stop_decoding(JPGD_DECODE_ERROR); - - k = pD->m_spectral_start; - - if (pD->m_eob_run == 0) - { - for (; k <= pD->m_spectral_end; k++) - { - unsigned int idx = pD->m_comp_ac_tab[component_id]; - if (idx >= JPGD_MAX_HUFF_TABLES) - pD->stop_decoding(JPGD_DECODE_ERROR); - - s = pD->huff_decode(pD->m_pHuff_tabs[idx]); - - r = s >> 4; - s &= 15; - - if (s) - { - if (s != 1) - pD->stop_decoding(JPGD_DECODE_ERROR); - - if (pD->get_bits_no_markers(1)) - s = p1; - else - s = m1; - } - else - { - if (r != 15) - { - pD->m_eob_run = 1 << r; - - if (r) - pD->m_eob_run += pD->get_bits_no_markers(r); - - break; - } - } - - do - { - jpgd_block_t* this_coef = p + g_ZAG[k & 63]; - - if (*this_coef != 0) - { - if (pD->get_bits_no_markers(1)) - { - if ((*this_coef & p1) == 0) - { - if (*this_coef >= 0) - *this_coef = static_cast(*this_coef + p1); - else - *this_coef = static_cast(*this_coef + m1); - } - } - } - else - { - if (--r < 0) - break; - } - - k++; - - } while (k <= pD->m_spectral_end); - - if ((s) && (k < 64)) - { - p[g_ZAG[k]] = static_cast(s); - } - } - } - - if (pD->m_eob_run > 0) - { - for (; k <= pD->m_spectral_end; k++) - { - jpgd_block_t* this_coef = p + g_ZAG[k & 63]; // logical AND to shut up static code analysis - - if (*this_coef != 0) - { - if (pD->get_bits_no_markers(1)) - { - if ((*this_coef & p1) == 0) - { - if (*this_coef >= 0) - *this_coef = static_cast(*this_coef + p1); - else - *this_coef = static_cast(*this_coef + m1); - } - } - } - } - - pD->m_eob_run--; - } - } - - // Decode a scan in a progressively encoded image. - void jpeg_decoder::decode_scan(pDecode_block_func decode_block_func) - { - int mcu_row, mcu_col, mcu_block; - int block_x_mcu[JPGD_MAX_COMPONENTS], block_y_mcu[JPGD_MAX_COMPONENTS]; - - memset(block_y_mcu, 0, sizeof(block_y_mcu)); - - for (mcu_col = 0; mcu_col < m_mcus_per_col; mcu_col++) - { - int component_num, component_id; - - memset(block_x_mcu, 0, sizeof(block_x_mcu)); - - for (mcu_row = 0; mcu_row < m_mcus_per_row; mcu_row++) - { - int block_x_mcu_ofs = 0, block_y_mcu_ofs = 0; - - if ((m_restart_interval) && (m_restarts_left == 0)) - process_restart(); - - for (mcu_block = 0; mcu_block < m_blocks_per_mcu; mcu_block++) - { - component_id = m_mcu_org[mcu_block]; - - decode_block_func(this, component_id, block_x_mcu[component_id] + block_x_mcu_ofs, block_y_mcu[component_id] + block_y_mcu_ofs); - - if (m_comps_in_scan == 1) - block_x_mcu[component_id]++; - else - { - if (++block_x_mcu_ofs == m_comp_h_samp[component_id]) - { - block_x_mcu_ofs = 0; - - if (++block_y_mcu_ofs == m_comp_v_samp[component_id]) - { - block_y_mcu_ofs = 0; - block_x_mcu[component_id] += m_comp_h_samp[component_id]; - } - } - } - } - - m_restarts_left--; - } - - if (m_comps_in_scan == 1) - block_y_mcu[m_comp_list[0]]++; - else - { - for (component_num = 0; component_num < m_comps_in_scan; component_num++) - { - component_id = m_comp_list[component_num]; - block_y_mcu[component_id] += m_comp_v_samp[component_id]; - } - } - } - } - - // Decode a progressively encoded image. - void jpeg_decoder::init_progressive() - { - int i; - - if (m_comps_in_frame == 4) - stop_decoding(JPGD_UNSUPPORTED_COLORSPACE); - - // Allocate the coefficient buffers. - for (i = 0; i < m_comps_in_frame; i++) - { - m_dc_coeffs[i] = coeff_buf_open(m_max_mcus_per_row * m_comp_h_samp[i], m_max_mcus_per_col * m_comp_v_samp[i], 1, 1); - m_ac_coeffs[i] = coeff_buf_open(m_max_mcus_per_row * m_comp_h_samp[i], m_max_mcus_per_col * m_comp_v_samp[i], 8, 8); - } - - // See https://libjpeg-turbo.org/pmwiki/uploads/About/TwoIssueswiththeJPEGStandard.pdf - uint32_t total_scans = 0; - const uint32_t MAX_SCANS_TO_PROCESS = 1000; - - for (; ; ) - { - int dc_only_scan, refinement_scan; - pDecode_block_func decode_block_func; - - if (!init_scan()) - break; - - dc_only_scan = (m_spectral_start == 0); - refinement_scan = (m_successive_high != 0); - - if ((m_spectral_start > m_spectral_end) || (m_spectral_end > 63)) - stop_decoding(JPGD_BAD_SOS_SPECTRAL); - - if (dc_only_scan) - { - if (m_spectral_end) - stop_decoding(JPGD_BAD_SOS_SPECTRAL); - } - else if (m_comps_in_scan != 1) /* AC scans can only contain one component */ - stop_decoding(JPGD_BAD_SOS_SPECTRAL); - - if ((refinement_scan) && (m_successive_low != m_successive_high - 1)) - stop_decoding(JPGD_BAD_SOS_SUCCESSIVE); - - if (dc_only_scan) - { - if (refinement_scan) - decode_block_func = decode_block_dc_refine; - else - decode_block_func = decode_block_dc_first; - } - else - { - if (refinement_scan) - decode_block_func = decode_block_ac_refine; - else - decode_block_func = decode_block_ac_first; - } - - decode_scan(decode_block_func); - - m_bits_left = 16; - get_bits(16); - get_bits(16); - - total_scans++; - if (total_scans > MAX_SCANS_TO_PROCESS) - stop_decoding(JPGD_TOO_MANY_SCANS); - } - - m_comps_in_scan = m_comps_in_frame; - - for (i = 0; i < m_comps_in_frame; i++) - m_comp_list[i] = i; - - if (!calc_mcu_block_order()) - stop_decoding(JPGD_DECODE_ERROR); - } - - void jpeg_decoder::init_sequential() - { - if (!init_scan()) - stop_decoding(JPGD_UNEXPECTED_MARKER); - } - - void jpeg_decoder::decode_start() - { - init_frame(); - - if (m_progressive_flag) - init_progressive(); - else - init_sequential(); - } - - void jpeg_decoder::decode_init(jpeg_decoder_stream* pStream, uint32_t flags) - { - init(pStream, flags); - locate_sof_marker(); - } - - jpeg_decoder::jpeg_decoder(jpeg_decoder_stream* pStream, uint32_t flags) - { - if (setjmp(m_jmp_state)) - return; - decode_init(pStream, flags); - } - - int jpeg_decoder::begin_decoding() - { - if (m_ready_flag) - return JPGD_SUCCESS; - - if (m_error_code) - return JPGD_FAILED; - - if (setjmp(m_jmp_state)) - return JPGD_FAILED; - - decode_start(); - - m_ready_flag = true; - - return JPGD_SUCCESS; - } - - jpeg_decoder::~jpeg_decoder() - { - free_all_blocks(); - } - - jpeg_decoder_file_stream::jpeg_decoder_file_stream() - { - m_pFile = nullptr; - m_eof_flag = false; - m_error_flag = false; - } - - void jpeg_decoder_file_stream::close() - { - if (m_pFile) - { - fclose(m_pFile); - m_pFile = nullptr; - } - - m_eof_flag = false; - m_error_flag = false; - } - - jpeg_decoder_file_stream::~jpeg_decoder_file_stream() - { - close(); - } - - bool jpeg_decoder_file_stream::open(const char* Pfilename) - { - close(); - - m_eof_flag = false; - m_error_flag = false; - -#if defined(_MSC_VER) - m_pFile = nullptr; - fopen_s(&m_pFile, Pfilename, "rb"); -#else - m_pFile = fopen(Pfilename, "rb"); -#endif - return m_pFile != nullptr; - } - - int jpeg_decoder_file_stream::read(uint8* pBuf, int max_bytes_to_read, bool* pEOF_flag) - { - if (!m_pFile) - return -1; - - if (m_eof_flag) - { - *pEOF_flag = true; - return 0; - } - - if (m_error_flag) - return -1; - - int bytes_read = static_cast(fread(pBuf, 1, max_bytes_to_read, m_pFile)); - if (bytes_read < max_bytes_to_read) - { - if (ferror(m_pFile)) - { - m_error_flag = true; - return -1; - } - - m_eof_flag = true; - *pEOF_flag = true; - } - - return bytes_read; - } - - bool jpeg_decoder_mem_stream::open(const uint8* pSrc_data, uint size) - { - close(); - m_pSrc_data = pSrc_data; - m_ofs = 0; - m_size = size; - return true; - } - - int jpeg_decoder_mem_stream::read(uint8* pBuf, int max_bytes_to_read, bool* pEOF_flag) - { - *pEOF_flag = false; - - if (!m_pSrc_data) - return -1; - - uint bytes_remaining = m_size - m_ofs; - if ((uint)max_bytes_to_read > bytes_remaining) - { - max_bytes_to_read = bytes_remaining; - *pEOF_flag = true; - } - - memcpy(pBuf, m_pSrc_data + m_ofs, max_bytes_to_read); - m_ofs += max_bytes_to_read; - - return max_bytes_to_read; - } - - unsigned char* decompress_jpeg_image_from_stream(jpeg_decoder_stream* pStream, int* width, int* height, int* actual_comps, int req_comps, uint32_t flags) - { - if (!actual_comps) - return nullptr; - *actual_comps = 0; - - if ((!pStream) || (!width) || (!height) || (!req_comps)) - return nullptr; - - if ((req_comps != 1) && (req_comps != 3) && (req_comps != 4)) - return nullptr; - - jpeg_decoder decoder(pStream, flags); - if (decoder.get_error_code() != JPGD_SUCCESS) - return nullptr; - - const int image_width = decoder.get_width(), image_height = decoder.get_height(); - *width = image_width; - *height = image_height; - *actual_comps = decoder.get_num_components(); - - if (decoder.begin_decoding() != JPGD_SUCCESS) - return nullptr; - - const int dst_bpl = image_width * req_comps; - - uint8* pImage_data = (uint8*)jpgd_malloc(dst_bpl * image_height); - if (!pImage_data) - return nullptr; - - for (int y = 0; y < image_height; y++) - { - const uint8* pScan_line = nullptr; - uint scan_line_len; - if (decoder.decode((const void**)&pScan_line, &scan_line_len) != JPGD_SUCCESS) - { - jpgd_free(pImage_data); - return nullptr; - } - - uint8* pDst = pImage_data + y * dst_bpl; - - if (((req_comps == 1) && (decoder.get_num_components() == 1)) || ((req_comps == 4) && (decoder.get_num_components() == 3))) - memcpy(pDst, pScan_line, dst_bpl); - else if (decoder.get_num_components() == 1) - { - if (req_comps == 3) - { - for (int x = 0; x < image_width; x++) - { - uint8 luma = pScan_line[x]; - pDst[0] = luma; - pDst[1] = luma; - pDst[2] = luma; - pDst += 3; - } - } - else - { - for (int x = 0; x < image_width; x++) - { - uint8 luma = pScan_line[x]; - pDst[0] = luma; - pDst[1] = luma; - pDst[2] = luma; - pDst[3] = 255; - pDst += 4; - } - } - } - else if (decoder.get_num_components() == 3) - { - if (req_comps == 1) - { - const int YR = 19595, YG = 38470, YB = 7471; - for (int x = 0; x < image_width; x++) - { - int r = pScan_line[x * 4 + 0]; - int g = pScan_line[x * 4 + 1]; - int b = pScan_line[x * 4 + 2]; - *pDst++ = static_cast((r * YR + g * YG + b * YB + 32768) >> 16); - } - } - else - { - for (int x = 0; x < image_width; x++) - { - pDst[0] = pScan_line[x * 4 + 0]; - pDst[1] = pScan_line[x * 4 + 1]; - pDst[2] = pScan_line[x * 4 + 2]; - pDst += 3; - } - } - } - } - - return pImage_data; - } - - unsigned char* decompress_jpeg_image_from_memory(const unsigned char* pSrc_data, int src_data_size, int* width, int* height, int* actual_comps, int req_comps, uint32_t flags) - { - jpgd::jpeg_decoder_mem_stream mem_stream(pSrc_data, src_data_size); - return decompress_jpeg_image_from_stream(&mem_stream, width, height, actual_comps, req_comps, flags); - } - - unsigned char* decompress_jpeg_image_from_file(const char* pSrc_filename, int* width, int* height, int* actual_comps, int req_comps, uint32_t flags) - { - jpgd::jpeg_decoder_file_stream file_stream; - if (!file_stream.open(pSrc_filename)) - return nullptr; - return decompress_jpeg_image_from_stream(&file_stream, width, height, actual_comps, req_comps, flags); - } - -} // namespace jpgd diff --git a/WickedEngine/Utility/basis_universal/encoder/jpgd.h b/WickedEngine/Utility/basis_universal/encoder/jpgd.h deleted file mode 100644 index 86a7814ca..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/jpgd.h +++ /dev/null @@ -1,347 +0,0 @@ -// jpgd.h - C++ class for JPEG decompression. -// Public domain, Rich Geldreich -#ifndef JPEG_DECODER_H -#define JPEG_DECODER_H - -#include -#include -#include -#include -#include - -#ifdef _MSC_VER -#define JPGD_NORETURN __declspec(noreturn) -#elif defined(__GNUC__) -#define JPGD_NORETURN __attribute__ ((noreturn)) -#else -#define JPGD_NORETURN -#endif - -#define JPGD_HUFF_TREE_MAX_LENGTH 512 -#define JPGD_HUFF_CODE_SIZE_MAX_LENGTH 256 - -namespace jpgd -{ - typedef unsigned char uint8; - typedef signed short int16; - typedef unsigned short uint16; - typedef unsigned int uint; - typedef signed int int32; - - // Loads a JPEG image from a memory buffer or a file. - // req_comps can be 1 (grayscale), 3 (RGB), or 4 (RGBA). - // On return, width/height will be set to the image's dimensions, and actual_comps will be set to the either 1 (grayscale) or 3 (RGB). - // Notes: For more control over where and how the source data is read, see the decompress_jpeg_image_from_stream() function below, or call the jpeg_decoder class directly. - // Requesting a 8 or 32bpp image is currently a little faster than 24bpp because the jpeg_decoder class itself currently always unpacks to either 8 or 32bpp. - unsigned char* decompress_jpeg_image_from_memory(const unsigned char* pSrc_data, int src_data_size, int* width, int* height, int* actual_comps, int req_comps, uint32_t flags = 0); - unsigned char* decompress_jpeg_image_from_file(const char* pSrc_filename, int* width, int* height, int* actual_comps, int req_comps, uint32_t flags = 0); - - // Success/failure error codes. - enum jpgd_status - { - JPGD_SUCCESS = 0, JPGD_FAILED = -1, JPGD_DONE = 1, - JPGD_BAD_DHT_COUNTS = -256, JPGD_BAD_DHT_INDEX, JPGD_BAD_DHT_MARKER, JPGD_BAD_DQT_MARKER, JPGD_BAD_DQT_TABLE, - JPGD_BAD_PRECISION, JPGD_BAD_HEIGHT, JPGD_BAD_WIDTH, JPGD_TOO_MANY_COMPONENTS, - JPGD_BAD_SOF_LENGTH, JPGD_BAD_VARIABLE_MARKER, JPGD_BAD_DRI_LENGTH, JPGD_BAD_SOS_LENGTH, - JPGD_BAD_SOS_COMP_ID, JPGD_W_EXTRA_BYTES_BEFORE_MARKER, JPGD_NO_ARITHMITIC_SUPPORT, JPGD_UNEXPECTED_MARKER, - JPGD_NOT_JPEG, JPGD_UNSUPPORTED_MARKER, JPGD_BAD_DQT_LENGTH, JPGD_TOO_MANY_BLOCKS, - JPGD_UNDEFINED_QUANT_TABLE, JPGD_UNDEFINED_HUFF_TABLE, JPGD_NOT_SINGLE_SCAN, JPGD_UNSUPPORTED_COLORSPACE, - JPGD_UNSUPPORTED_SAMP_FACTORS, JPGD_DECODE_ERROR, JPGD_BAD_RESTART_MARKER, - JPGD_BAD_SOS_SPECTRAL, JPGD_BAD_SOS_SUCCESSIVE, JPGD_STREAM_READ, JPGD_NOTENOUGHMEM, JPGD_TOO_MANY_SCANS - }; - - // Input stream interface. - // Derive from this class to read input data from sources other than files or memory. Set m_eof_flag to true when no more data is available. - // The decoder is rather greedy: it will keep on calling this method until its internal input buffer is full, or until the EOF flag is set. - // It the input stream contains data after the JPEG stream's EOI (end of image) marker it will probably be pulled into the internal buffer. - // Call the get_total_bytes_read() method to determine the actual size of the JPEG stream after successful decoding. - class jpeg_decoder_stream - { - public: - jpeg_decoder_stream() { } - virtual ~jpeg_decoder_stream() { } - - // The read() method is called when the internal input buffer is empty. - // Parameters: - // pBuf - input buffer - // max_bytes_to_read - maximum bytes that can be written to pBuf - // pEOF_flag - set this to true if at end of stream (no more bytes remaining) - // Returns -1 on error, otherwise return the number of bytes actually written to the buffer (which may be 0). - // Notes: This method will be called in a loop until you set *pEOF_flag to true or the internal buffer is full. - virtual int read(uint8* pBuf, int max_bytes_to_read, bool* pEOF_flag) = 0; - }; - - // stdio FILE stream class. - class jpeg_decoder_file_stream : public jpeg_decoder_stream - { - jpeg_decoder_file_stream(const jpeg_decoder_file_stream&); - jpeg_decoder_file_stream& operator =(const jpeg_decoder_file_stream&); - - FILE* m_pFile; - bool m_eof_flag, m_error_flag; - - public: - jpeg_decoder_file_stream(); - virtual ~jpeg_decoder_file_stream(); - - bool open(const char* Pfilename); - void close(); - - virtual int read(uint8* pBuf, int max_bytes_to_read, bool* pEOF_flag); - }; - - // Memory stream class. - class jpeg_decoder_mem_stream : public jpeg_decoder_stream - { - const uint8* m_pSrc_data; - uint m_ofs, m_size; - - public: - jpeg_decoder_mem_stream() : m_pSrc_data(NULL), m_ofs(0), m_size(0) { } - jpeg_decoder_mem_stream(const uint8* pSrc_data, uint size) : m_pSrc_data(pSrc_data), m_ofs(0), m_size(size) { } - - virtual ~jpeg_decoder_mem_stream() { } - - bool open(const uint8* pSrc_data, uint size); - void close() { m_pSrc_data = NULL; m_ofs = 0; m_size = 0; } - - virtual int read(uint8* pBuf, int max_bytes_to_read, bool* pEOF_flag); - }; - - // Loads JPEG file from a jpeg_decoder_stream. - unsigned char* decompress_jpeg_image_from_stream(jpeg_decoder_stream* pStream, int* width, int* height, int* actual_comps, int req_comps, uint32_t flags = 0); - - enum - { - JPGD_IN_BUF_SIZE = 8192, JPGD_MAX_BLOCKS_PER_MCU = 10, JPGD_MAX_HUFF_TABLES = 8, JPGD_MAX_QUANT_TABLES = 4, - JPGD_MAX_COMPONENTS = 4, JPGD_MAX_COMPS_IN_SCAN = 4, JPGD_MAX_BLOCKS_PER_ROW = 16384, JPGD_MAX_HEIGHT = 32768, JPGD_MAX_WIDTH = 32768 - }; - - typedef int16 jpgd_quant_t; - typedef int16 jpgd_block_t; - - class jpeg_decoder - { - public: - enum - { - cFlagLinearChromaFiltering = 1 - }; - - // Call get_error_code() after constructing to determine if the stream is valid or not. You may call the get_width(), get_height(), etc. - // methods after the constructor is called. You may then either destruct the object, or begin decoding the image by calling begin_decoding(), then decode() on each scanline. - jpeg_decoder(jpeg_decoder_stream* pStream, uint32_t flags = cFlagLinearChromaFiltering); - - ~jpeg_decoder(); - - // Call this method after constructing the object to begin decompression. - // If JPGD_SUCCESS is returned you may then call decode() on each scanline. - - int begin_decoding(); - - // Returns the next scan line. - // For grayscale images, pScan_line will point to a buffer containing 8-bit pixels (get_bytes_per_pixel() will return 1). - // Otherwise, it will always point to a buffer containing 32-bit RGBA pixels (A will always be 255, and get_bytes_per_pixel() will return 4). - // Returns JPGD_SUCCESS if a scan line has been returned. - // Returns JPGD_DONE if all scan lines have been returned. - // Returns JPGD_FAILED if an error occurred. Call get_error_code() for a more info. - int decode(const void** pScan_line, uint* pScan_line_len); - - inline jpgd_status get_error_code() const { return m_error_code; } - - inline int get_width() const { return m_image_x_size; } - inline int get_height() const { return m_image_y_size; } - - inline int get_num_components() const { return m_comps_in_frame; } - - inline int get_bytes_per_pixel() const { return m_dest_bytes_per_pixel; } - inline int get_bytes_per_scan_line() const { return m_image_x_size * get_bytes_per_pixel(); } - - // Returns the total number of bytes actually consumed by the decoder (which should equal the actual size of the JPEG file). - inline int get_total_bytes_read() const { return m_total_bytes_read; } - - private: - jpeg_decoder(const jpeg_decoder&); - jpeg_decoder& operator =(const jpeg_decoder&); - - typedef void (*pDecode_block_func)(jpeg_decoder*, int, int, int); - - struct huff_tables - { - bool ac_table; - uint look_up[256]; - uint look_up2[256]; - uint8 code_size[JPGD_HUFF_CODE_SIZE_MAX_LENGTH]; - uint tree[JPGD_HUFF_TREE_MAX_LENGTH]; - }; - - struct coeff_buf - { - uint8* pData; - int block_num_x, block_num_y; - int block_len_x, block_len_y; - int block_size; - }; - - struct mem_block - { - mem_block* m_pNext; - size_t m_used_count; - size_t m_size; - char m_data[1]; - }; - - jmp_buf m_jmp_state; - uint32_t m_flags; - mem_block* m_pMem_blocks; - int m_image_x_size; - int m_image_y_size; - jpeg_decoder_stream* m_pStream; - - int m_progressive_flag; - - uint8 m_huff_ac[JPGD_MAX_HUFF_TABLES]; - uint8* m_huff_num[JPGD_MAX_HUFF_TABLES]; // pointer to number of Huffman codes per bit size - uint8* m_huff_val[JPGD_MAX_HUFF_TABLES]; // pointer to Huffman codes per bit size - jpgd_quant_t* m_quant[JPGD_MAX_QUANT_TABLES]; // pointer to quantization tables - int m_scan_type; // Gray, Yh1v1, Yh1v2, Yh2v1, Yh2v2 (CMYK111, CMYK4114 no longer supported) - int m_comps_in_frame; // # of components in frame - int m_comp_h_samp[JPGD_MAX_COMPONENTS]; // component's horizontal sampling factor - int m_comp_v_samp[JPGD_MAX_COMPONENTS]; // component's vertical sampling factor - int m_comp_quant[JPGD_MAX_COMPONENTS]; // component's quantization table selector - int m_comp_ident[JPGD_MAX_COMPONENTS]; // component's ID - int m_comp_h_blocks[JPGD_MAX_COMPONENTS]; - int m_comp_v_blocks[JPGD_MAX_COMPONENTS]; - int m_comps_in_scan; // # of components in scan - int m_comp_list[JPGD_MAX_COMPS_IN_SCAN]; // components in this scan - int m_comp_dc_tab[JPGD_MAX_COMPONENTS]; // component's DC Huffman coding table selector - int m_comp_ac_tab[JPGD_MAX_COMPONENTS]; // component's AC Huffman coding table selector - int m_spectral_start; // spectral selection start - int m_spectral_end; // spectral selection end - int m_successive_low; // successive approximation low - int m_successive_high; // successive approximation high - int m_max_mcu_x_size; // MCU's max. X size in pixels - int m_max_mcu_y_size; // MCU's max. Y size in pixels - int m_blocks_per_mcu; - int m_max_blocks_per_row; - int m_mcus_per_row, m_mcus_per_col; - int m_mcu_org[JPGD_MAX_BLOCKS_PER_MCU]; - int m_total_lines_left; // total # lines left in image - int m_mcu_lines_left; // total # lines left in this MCU - int m_num_buffered_scanlines; - int m_real_dest_bytes_per_scan_line; - int m_dest_bytes_per_scan_line; // rounded up - int m_dest_bytes_per_pixel; // 4 (RGB) or 1 (Y) - huff_tables* m_pHuff_tabs[JPGD_MAX_HUFF_TABLES]; - coeff_buf* m_dc_coeffs[JPGD_MAX_COMPONENTS]; - coeff_buf* m_ac_coeffs[JPGD_MAX_COMPONENTS]; - int m_eob_run; - int m_block_y_mcu[JPGD_MAX_COMPONENTS]; - uint8* m_pIn_buf_ofs; - int m_in_buf_left; - int m_tem_flag; - - uint8 m_in_buf_pad_start[64]; - uint8 m_in_buf[JPGD_IN_BUF_SIZE + 128]; - uint8 m_in_buf_pad_end[64]; - - int m_bits_left; - uint m_bit_buf; - int m_restart_interval; - int m_restarts_left; - int m_next_restart_num; - int m_max_mcus_per_row; - int m_max_blocks_per_mcu; - - int m_max_mcus_per_col; - uint m_last_dc_val[JPGD_MAX_COMPONENTS]; - jpgd_block_t* m_pMCU_coefficients; - int m_mcu_block_max_zag[JPGD_MAX_BLOCKS_PER_MCU]; - uint8* m_pSample_buf; - uint8* m_pSample_buf_prev; - int m_crr[256]; - int m_cbb[256]; - int m_crg[256]; - int m_cbg[256]; - uint8* m_pScan_line_0; - uint8* m_pScan_line_1; - jpgd_status m_error_code; - int m_total_bytes_read; - - bool m_ready_flag; - bool m_eof_flag; - bool m_sample_buf_prev_valid; - - inline int check_sample_buf_ofs(int ofs) const { assert(ofs >= 0); assert(ofs < m_max_blocks_per_row * 64); return ofs; } - void free_all_blocks(); - JPGD_NORETURN void stop_decoding(jpgd_status status); - void* alloc(size_t n, bool zero = false); - void word_clear(void* p, uint16 c, uint n); - void prep_in_buffer(); - void read_dht_marker(); - void read_dqt_marker(); - void read_sof_marker(); - void skip_variable_marker(); - void read_dri_marker(); - void read_sos_marker(); - int next_marker(); - int process_markers(); - void locate_soi_marker(); - void locate_sof_marker(); - int locate_sos_marker(); - void init(jpeg_decoder_stream* pStream, uint32_t flags); - void create_look_ups(); - void fix_in_buffer(); - void transform_mcu(int mcu_row); - coeff_buf* coeff_buf_open(int block_num_x, int block_num_y, int block_len_x, int block_len_y); - inline jpgd_block_t* coeff_buf_getp(coeff_buf* cb, int block_x, int block_y); - void load_next_row(); - void decode_next_row(); - void make_huff_table(int index, huff_tables* pH); - void check_quant_tables(); - void check_huff_tables(); - bool calc_mcu_block_order(); - int init_scan(); - void init_frame(); - void process_restart(); - void decode_scan(pDecode_block_func decode_block_func); - void init_progressive(); - void init_sequential(); - void decode_start(); - void decode_init(jpeg_decoder_stream* pStream, uint32_t flags); - void H2V2Convert(); - uint32_t H2V2ConvertFiltered(); - void H2V1Convert(); - void H2V1ConvertFiltered(); - void H1V2Convert(); - void H1V2ConvertFiltered(); - void H1V1Convert(); - void gray_convert(); - void find_eoi(); - inline uint get_char(); - inline uint get_char(bool* pPadding_flag); - inline void stuff_char(uint8 q); - inline uint8 get_octet(); - inline uint get_bits(int num_bits); - inline uint get_bits_no_markers(int numbits); - inline int huff_decode(huff_tables* pH); - inline int huff_decode(huff_tables* pH, int& extrabits); - - // Clamps a value between 0-255. - static inline uint8 clamp(int i) - { - if (static_cast(i) > 255) - i = (((~i) >> 31) & 0xFF); - return static_cast(i); - } - int decode_next_mcu_row(); - - static void decode_block_dc_first(jpeg_decoder* pD, int component_id, int block_x, int block_y); - static void decode_block_dc_refine(jpeg_decoder* pD, int component_id, int block_x, int block_y); - static void decode_block_ac_first(jpeg_decoder* pD, int component_id, int block_x, int block_y); - static void decode_block_ac_refine(jpeg_decoder* pD, int component_id, int block_x, int block_y); - }; - -} // namespace jpgd - -#endif // JPEG_DECODER_H diff --git a/WickedEngine/Utility/basis_universal/encoder/pvpngreader.cpp b/WickedEngine/Utility/basis_universal/encoder/pvpngreader.cpp deleted file mode 100644 index 46639f279..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/pvpngreader.cpp +++ /dev/null @@ -1,2662 +0,0 @@ -// pngreader.cpp - Public Domain - see unlicense at bottom of file. -// -// Notes: -// This is ancient code from ~1995 ported to C++. It was originally written for a -// DOS app with very limited memory. It's not as fast as it should be, but it works. -// The low-level PNG reader class was written assuming the PNG file could not fit -// entirely into memory, which dictated how it was written/structured. -// It has been modified to use either zlib or miniz. -// It supports all PNG color types/bit depths/interlacing, however 16-bit/component -// images are converted to 8-bit. -// TRNS chunks are converted to alpha as needed. -// GAMA chunk is read, but not applied. - -#include "../transcoder/basisu.h" - -#define MINIZ_HEADER_FILE_ONLY -#define MINIZ_NO_ZLIB_COMPATIBLE_NAMES -#include "basisu_miniz.h" - -#include "pvpngreader.h" - -#include -#include -#include -#include -#include -#include - -#define PVPNG_IDAT_CRC_CHECKING (1) -#define PVPNG_ADLER32_CHECKING (1) - -namespace pv_png -{ - -const uint32_t MIN_PNG_SIZE = 8 + 13 + 8 + 1 + 4 + 12; - -template inline S maximum(S a, S b) { return (a > b) ? a : b; } -template inline S minimum(S a, S b) { return (a < b) ? a : b; } - -template inline void clear_obj(T& obj) { memset(&obj, 0, sizeof(obj)); } - -#define MAX_SUPPORTED_RES (32768) -#define FALSE (0) -#define TRUE (1) -#define PNG_MAX_ALLOC_BLOCKS (16) - -enum -{ - PNG_DECERROR = -3, - PNG_ALLDONE = -5, - PNG_READPASTEOF = -11, - PNG_UNKNOWNTYPE = -16, - PNG_FILEREADERROR = -17, - PNG_NOTENOUGHMEM = -108, - PNG_BAD_CHUNK_CRC32 = -13000, - PNG_NO_IHDR = -13001, - PNG_BAD_WIDTH = -13002, - PNG_BAD_HEIGHT = -13003, - PNG_UNS_COMPRESSION = -13004, - PNG_UNS_FILTER = -13005, - PNG_UNS_ILACE = -13006, - PNG_UNS_COLOR_TYPE = -13007, - PNG_BAD_BIT_DEPTH = -13008, - PNG_BAD_CHUNK_SIZE = -13009, - PNG_UNS_CRITICAL_CHUNK = -13010, - PNG_BAD_TRNS_CHUNK = -13011, - PNG_BAD_PLTE_CHUNK = -13012, - PNG_UNS_RESOLUTION = -13013, - PNG_INVALID_DATA_STREAM = -13014, - PNG_MISSING_PALETTE = -13015, - PNG_UNS_PREDICTOR = -13016, - PNG_INCOMPLETE_IMAGE = -13017, - PNG_TOO_MUCH_DATA = -13018 -}; - -#define PNG_COLOR_TYPE_PAL_MASK (1) -#define PNG_COLOR_TYPE_COL_MASK (2) -#define PNG_COLOR_TYPE_ALP_MASK (4) - -#define PNG_INFLATE_SRC_BUF_SIZE (4096) - -struct ihdr_struct -{ - uint32_t m_width; - uint32_t m_height; - uint8_t m_bit_depth; - uint8_t m_color_type; - uint8_t m_comp_type; - uint8_t m_filter_type; - uint8_t m_ilace_type; -}; - -class png_file -{ -public: - png_file() { } - virtual ~png_file() { } - - virtual bool resize(uint64_t new_size) = 0; - virtual uint64_t get_size() = 0; - virtual uint64_t tell() = 0; - virtual bool seek(uint64_t ofs) = 0; - virtual size_t write(const void* pBuf, size_t len) = 0; - virtual size_t read(void* pBuf, size_t len) = 0; -}; - -class png_memory_file : public png_file -{ -public: - std::vector m_buf; - uint64_t m_ofs; - - png_memory_file() : - png_file(), - m_ofs(0) - { - } - - virtual ~png_memory_file() - { - } - - std::vector& get_buf() { return m_buf; } - const std::vector& get_buf() const { return m_buf; } - - void init() - { - m_ofs = 0; - m_buf.resize(0); - } - - virtual bool resize(uint64_t new_size) - { - if ((sizeof(size_t) == sizeof(uint32_t)) && (new_size >= 0x7FFFFFFF)) - return false; - - m_buf.resize((size_t)new_size); - m_ofs = m_buf.size(); - - return true; - } - - virtual uint64_t get_size() - { - return m_buf.size(); - } - - virtual uint64_t tell() - { - return m_ofs; - } - - virtual bool seek(uint64_t ofs) - { - m_ofs = ofs; - return true; - } - - virtual size_t write(const void* pBuf, size_t len) - { - uint64_t new_size = m_ofs + len; - if (new_size > m_buf.size()) - { - if ((sizeof(size_t) == sizeof(uint32_t)) && (new_size > 0x7FFFFFFFUL)) - return 0; - m_buf.resize(new_size); - } - - memcpy(&m_buf[(size_t)m_ofs], pBuf, len); - m_ofs += len; - - return len; - } - - virtual size_t read(void* pBuf, size_t len) - { - if (m_ofs >= m_buf.size()) - return 0; - - uint64_t max_bytes = minimum(len, m_buf.size() - m_ofs); - memcpy(pBuf, &m_buf[(size_t)m_ofs], max_bytes); - - m_ofs += max_bytes; - - return max_bytes; - } -}; - -class png_readonly_memory_file : public png_file -{ -public: - const uint8_t* m_pBuf; - size_t m_buf_size; - uint64_t m_ofs; - - png_readonly_memory_file() : - png_file(), - m_pBuf(nullptr), - m_buf_size(0), - m_ofs(0) - { - } - - virtual ~png_readonly_memory_file() - { - } - - void init(const void *pBuf, size_t buf_size) - { - m_pBuf = static_cast(pBuf); - m_buf_size = buf_size; - m_ofs = 0; - } - - virtual bool resize(uint64_t new_size) - { - (void)new_size; - assert(0); - return false; - } - - virtual uint64_t get_size() - { - return m_buf_size; - } - - virtual uint64_t tell() - { - return m_ofs; - } - - virtual bool seek(uint64_t ofs) - { - m_ofs = ofs; - return true; - } - - virtual size_t write(const void* pBuf, size_t len) - { - (void)pBuf; - (void)len; - assert(0); - return 0; - } - - virtual size_t read(void* pBuf, size_t len) - { - if (m_ofs >= m_buf_size) - return 0; - - uint64_t max_bytes = minimum(len, m_buf_size - m_ofs); - memcpy(pBuf, &m_pBuf[(size_t)m_ofs], max_bytes); - - m_ofs += max_bytes; - - return max_bytes; - } -}; - -#ifdef _MSC_VER -#define ftell64 _ftelli64 -#define fseek64 _fseeki64 -#else -#define ftell64 ftello -#define fseek64 fseeko -#endif - -class png_cfile : public png_file -{ -public: - FILE* m_pFile; - - png_cfile() : - png_file(), - m_pFile(nullptr) - { - } - - virtual ~png_cfile() - { - close(); - } - - bool init(const char *pFilename, const char *pMode) - { - close(); - - m_pFile = nullptr; - -#ifdef _MSC_VER - fopen_s(&m_pFile, pFilename, pMode); -#else - m_pFile = fopen(pFilename, pMode); -#endif - - return m_pFile != nullptr; - } - - bool close() - { - bool status = true; - if (m_pFile) - { - if (fclose(m_pFile) == EOF) - status = false; - m_pFile = nullptr; - } - return status; - } - - virtual bool resize(uint64_t new_size) - { - if (new_size) - { - if (!seek(new_size - 1)) - return false; - - int v = 0; - if (write(&v, 1) != 1) - return false; - } - else - { - if (!seek(0)) - return false; - } - - return true; - } - - virtual uint64_t get_size() - { - int64_t cur_ofs = ftell64(m_pFile); - if (cur_ofs < 0) - return 0; - - if (fseek64(m_pFile, 0, SEEK_END) != 0) - return 0; - - const int64_t cur_size = ftell64(m_pFile); - if (cur_size < 0) - return 0; - - if (fseek64(m_pFile, cur_ofs, SEEK_SET) != 0) - return 0; - - return cur_size; - } - - virtual uint64_t tell() - { - int64_t cur_ofs = ftell64(m_pFile); - if (cur_ofs < 0) - return 0; - - return cur_ofs; - } - - virtual bool seek(uint64_t ofs) - { - return fseek64(m_pFile, ofs, SEEK_SET) == 0; - } - - virtual size_t write(const void* pBuf, size_t len) - { - return (size_t)fwrite(pBuf, 1, len, m_pFile); - } - - virtual size_t read(void* pBuf, size_t len) - { - return (size_t)fread(pBuf, 1, len, m_pFile); - } -}; - -// This low-level helper class handles the actual decoding of PNG files. -class png_decoder -{ -public: - png_decoder(); - ~png_decoder(); - - // Scans the PNG file, but doesn't decode the IDAT data. - // Returns 0 on success, or an error code. - // If the returned status is non-zero, or m_img_supported_flag==FALSE the image either the image is corrupted/not PNG or is unsupported in some way. - int png_scan(png_file *pFile); - - // Decodes a single scanline of PNG image data. - // Returns a pointer to the scanline's pixel data and its size in bytes. - // This data is only minimally processed from the internal PNG pixel data. - // The caller must use the ihdr, trns_flag and values, and the palette to actually decode the pixel data. - // - // Possible returned pixel formats is somewhat complex due to the history of this code: - // 8-bit RGBA, always 4 bytes/pixel - 24bpp PNG's are converted to 32bpp and TRNS processing is done automatically (8/16bpp RGB or RGBA PNG files) - // 1/2/4/8-bit grayscale, 1 byte per pixel - must convert to [0,255] using the palette or some other means, must optionally use the TRNS chunk for alpha (1/2/4/8 Grayscale PNG files - not 16bpp though!) - // 1/2/4/8-bit palettized, 1 byte per pixel - must convert to RGB using the 24bpp palette and optionally the TRNS chunk for alpha (1/2/4/8bpp palettized PNG files) - // 8-bit grayscale with alpha, 2 bytes per pixel - TRNS processing will be done for you on 16bpp images (there's a special case here for 16bpp Grey files) (8/16bpp Gray-Alpha *or 16bpp Grayscale* PNG files) - // - // Returns 0 on success, a non-zero error code, or PNG_ALLDONE. - int png_decode(void** ppImg_ptr, uint32_t* pImg_len); - - // Starts decoding. Returns 0 on success, otherwise an error code. - int png_decode_start(); - - // Deinitializes the decoder, freeing all allocations. - void png_decode_end(); - - png_file* m_pFile; - - // Image's 24bpp palette - 3 bytes per entry - uint8_t m_plte_flag; - uint8_t m_img_pal[768]; - - int m_img_supported_flag; - - ihdr_struct m_ihdr; - - uint8_t m_chunk_flag; - uint32_t m_chunk_size; - uint32_t m_chunk_left; - uint32_t m_chunk_crc32; - uint8_t m_chunk_name[4]; - - uint8_t m_end_of_idat_chunks; - - void* m_pMalloc_blocks[PNG_MAX_ALLOC_BLOCKS]; - - uint32_t m_dec_bytes_per_pixel; // bytes per pixel decoded from the PNG file (minimum 1 for 1/2/4 bpp), factors in the PNG 8/16 bit/component bit depth, may be up to 8 bytes (2*4) - uint32_t m_dst_bytes_per_pixel; // bytes per pixel returned to the caller (1-4), always has alpha if the PNG has alpha, 16-bit components always converted to 8-bits/component - - uint32_t m_dec_bytes_per_line; // bytes per line decoded from the PNG file (before 1/2/4 expansion), +1 for the filter byte - uint32_t m_src_bytes_per_line; // decoded PNG bytes per line, before 1/2/4 bpp expansion, not counting the filter byte, updated during adam7 deinterlacing - uint32_t m_dst_bytes_per_line; // bytes per line returned to the caller (1-4 times width) - - int (*m_pProcess_func)(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi); - - uint8_t* m_pPre_line_buf; - uint8_t* m_pCur_line_buf; - uint8_t* m_pPro_line_buf; - - uint8_t m_bkgd_flag; - uint32_t m_bkgd_value[3]; - - uint8_t m_gama_flag; - uint32_t m_gama_value; - - uint8_t m_trns_flag; - uint32_t m_trns_value[256]; - - buminiz::mz_stream m_inflator; - - uint8_t inflate_src_buf[PNG_INFLATE_SRC_BUF_SIZE]; - - uint32_t m_inflate_src_buf_ofs; - uint32_t m_inflate_src_buf_size; - uint32_t m_inflate_dst_buf_ofs; - - int m_inflate_eof_flag; - - uint8_t m_gamma_table[256]; - - int m_pass_x_size; - int m_pass_y_left; - - int m_adam7_pass_num; - int m_adam7_pass_y; - int m_adam7_pass_size_x[7]; - int m_adam7_pass_size_y[7]; - - std::vector m_adam7_image_buf; - - int m_adam7_decoded_flag; - - bool m_scanned_flag; - - int m_terminate_status; - -#define TEMP_BUF_SIZE (384) - uint8_t m_temp_buf[TEMP_BUF_SIZE * 4]; - - void clear(); - void uninitialize(); - int terminate(int status); - void* png_malloc(uint32_t i); - void* png_calloc(uint32_t i); - int block_read(void* buf, uint32_t len); - int64_t block_read_dword(); - int fetch_next_chunk_data(uint8_t* buf, int bytes); - int fetch_next_chunk_byte(); - int fetch_next_chunk_word(); - int64_t fetch_next_chunk_dword(); - int fetch_next_chunk_init(); - int unchunk_data(uint8_t* buf, uint32_t bytes, uint32_t* ptr_bytes_read); - inline void adam7_write_pixel_8(int x, int y, int c); - inline void adam7_write_pixel_16(int x, int y, int r, int g); - inline void adam7_write_pixel_24(int x, int y, int r, int g, int b); - inline void adam7_write_pixel_32(int x, int y, int r, int g, int b, int a); - void unpredict_sub(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp); - void unpredict_up(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp); - void unpredict_average(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp); - inline uint8_t paeth_predictor(int a, int b, int c); - void unpredict_paeth(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp); - int adam7_pass_size(int size, int start, int step); - int decompress_line(uint32_t* bytes_decoded); - int find_iend_chunk(); - void calc_gamma_table(); - void create_grey_palette(); - int read_signature(); - int read_ihdr_chunk(); - int read_bkgd_chunk(); - int read_gama_chunk(); - int read_trns_chunk(); - int read_plte_chunk(); - int find_idat_chunk(); -}; - -void png_decoder::uninitialize() -{ - m_pFile = nullptr; - - for (int i = 0; i < PNG_MAX_ALLOC_BLOCKS; i++) - { - free(m_pMalloc_blocks[i]); - m_pMalloc_blocks[i] = nullptr; - } - - mz_inflateEnd(&m_inflator); -} - -int png_decoder::terminate(int status) -{ - if (m_terminate_status == 0) - m_terminate_status = status; - - uninitialize(); - return status; -} - -void* png_decoder::png_malloc(uint32_t len) -{ - if (!len) - len++; - - void* p = malloc(len); - - if (!p) - return nullptr; - - int j; - for (j = 0; j < PNG_MAX_ALLOC_BLOCKS; j++) - if (!m_pMalloc_blocks[j]) - break; - - if (j == PNG_MAX_ALLOC_BLOCKS) - return nullptr; - - m_pMalloc_blocks[j] = p; - - return p; -} - -void* png_decoder::png_calloc(uint32_t len) -{ - void* p = png_malloc(len); - if (!p) - return nullptr; - - if (p) - memset(p, 0, len); - - return p; -} - -int png_decoder::block_read(void* buf, uint32_t len) -{ - size_t bytes_read = m_pFile->read(buf, len); - if (bytes_read != len) - return terminate(PNG_READPASTEOF); - return 0; -} - -int64_t png_decoder::block_read_dword() -{ - uint8_t buf[4]; - - int status = block_read(buf, 4); - if (status != 0) - return status; - - uint32_t v = buf[3] + ((uint32_t)buf[2] << 8) + ((uint32_t)buf[1] << 16) + ((uint32_t)buf[0] << 24); - return (int64_t)v; -} - -int png_decoder::fetch_next_chunk_data(uint8_t* buf, int bytes) -{ - if (!m_chunk_flag) - return 0; - - bytes = minimum(bytes, m_chunk_left); - - int status = block_read(buf, bytes); - if (status != 0) - return status; - -#if PVPNG_IDAT_CRC_CHECKING - bool check_crc32 = true; -#else - const bool is_idat = (m_chunk_name[0] == 'I') && (m_chunk_name[1] == 'D') && (m_chunk_name[2] == 'A') && (m_chunk_name[3] == 'T'); - bool check_crc32 = !is_idat; -#endif - - if (check_crc32) - m_chunk_crc32 = buminiz::mz_crc32(m_chunk_crc32, buf, bytes); - - if ((m_chunk_left -= bytes) == 0) - { - int64_t res = block_read_dword(); - if (res < 0) - return (int)res; - - if (check_crc32) - { - if (m_chunk_crc32 != (uint32_t)res) - return terminate(PNG_BAD_CHUNK_CRC32); - } - - m_chunk_flag = FALSE; - } - - return bytes; -} - -int png_decoder::fetch_next_chunk_byte() -{ - uint8_t buf[1]; - - int status = fetch_next_chunk_data(buf, 1); - if (status < 0) - return status; - - if (status != 1) - return terminate(PNG_BAD_CHUNK_SIZE); - - return buf[0]; -} - -int png_decoder::fetch_next_chunk_word() -{ - uint8_t buf[2]; - - int status = fetch_next_chunk_data(buf, 2); - if (status < 0) - return status; - - if (status != 2) - return terminate(PNG_BAD_CHUNK_SIZE); - - return buf[1] + ((uint32_t)buf[0] << 8); -} - -int64_t png_decoder::fetch_next_chunk_dword() -{ - uint8_t buf[4]; - - int status = fetch_next_chunk_data(buf, 4); - if (status < 0) - return status; - - if (status != 4) - terminate(PNG_BAD_CHUNK_SIZE); - - uint32_t v = buf[3] + ((uint32_t)buf[2] << 8) + ((uint32_t)buf[1] << 16) + ((uint32_t)buf[0] << 24); - return (int64_t)v; -} - -int png_decoder::fetch_next_chunk_init() -{ - while (m_chunk_flag) - { - int status = fetch_next_chunk_data(m_temp_buf, TEMP_BUF_SIZE * 4); - if (status != 0) - return status; - } - - int64_t n = block_read_dword(); - if (n < 0) - return (int)n; - - m_chunk_size = (uint32_t)n; - - m_chunk_flag = TRUE; - m_chunk_left = m_chunk_size + 4; - m_chunk_crc32 = 0; - - int status = fetch_next_chunk_data(m_chunk_name, 4); - if (status < 0) - return status; - - return 0; -} - -int png_decoder::unchunk_data(uint8_t* buf, uint32_t bytes, uint32_t* ptr_bytes_read) -{ - uint32_t bytes_read = 0; - - if ((!bytes) || (m_end_of_idat_chunks)) - { - *ptr_bytes_read = 0; - return TRUE; - } - - while (bytes_read != bytes) - { - if (!m_chunk_flag) - { - int res = fetch_next_chunk_init(); - if (res < 0) - return res; - - if ((m_chunk_name[0] != 'I') || - (m_chunk_name[1] != 'D') || - (m_chunk_name[2] != 'A') || - (m_chunk_name[3] != 'T')) - { - *ptr_bytes_read = bytes_read; - m_end_of_idat_chunks = TRUE; - return TRUE; - } - } - - int res = fetch_next_chunk_data(buf + bytes_read, bytes - bytes_read); - if (res < 0) - return res; - - bytes_read += (uint32_t)res; - } - - *ptr_bytes_read = bytes_read; - - return FALSE; -} - -inline void png_decoder::adam7_write_pixel_8(int x, int y, int c) -{ - m_adam7_image_buf[x + y * m_dst_bytes_per_line] = (uint8_t)c; -} - -inline void png_decoder::adam7_write_pixel_16(int x, int y, int r, int g) -{ - uint32_t ofs = x * 2 + y * m_dst_bytes_per_line; - m_adam7_image_buf[ofs + 0] = (uint8_t)r; - m_adam7_image_buf[ofs + 1] = (uint8_t)g; -} - -inline void png_decoder::adam7_write_pixel_24(int x, int y, int r, int g, int b) -{ - uint32_t ofs = x * 3 + y * m_dst_bytes_per_line; - m_adam7_image_buf[ofs + 0] = (uint8_t)r; - m_adam7_image_buf[ofs + 1] = (uint8_t)g; - m_adam7_image_buf[ofs + 2] = (uint8_t)b; -} - -inline void png_decoder::adam7_write_pixel_32(int x, int y, int r, int g, int b, int a) -{ - uint32_t ofs = x * 4 + y * m_dst_bytes_per_line; - m_adam7_image_buf[ofs + 0] = (uint8_t)r; - m_adam7_image_buf[ofs + 1] = (uint8_t)g; - m_adam7_image_buf[ofs + 2] = (uint8_t)b; - m_adam7_image_buf[ofs + 3] = (uint8_t)a; -} - -static void PixelDePack2(void* src, void* dst, int numbytes) -{ - uint8_t* src8 = (uint8_t*)src; - uint8_t* dst8 = (uint8_t*)dst; - - while (numbytes) - { - uint8_t v = *src8++; - - for (uint32_t i = 0; i < 8; i++) - dst8[7 - i] = (v >> i) & 1; - - dst8 += 8; - numbytes--; - } -} - -static void PixelDePack16(void* src, void* dst, int numbytes) -{ - uint8_t* src8 = (uint8_t*)src; - uint8_t* dst8 = (uint8_t*)dst; - - while (numbytes) - { - uint8_t v = *src8++; - - dst8[0] = (uint8_t)v >> 4; - dst8[1] = (uint8_t)v & 0xF; - dst8 += 2; - - numbytes--; - } -} - -static int unpack_grey_1(uint8_t* src, uint8_t* dst, int pixels, png_decoder *pwi) -{ - (void)pwi; - PixelDePack2(src, dst, pixels >> 3); - - dst += (pixels & 0xFFF8); - - if ((pixels & 7) != 0) - { - uint8_t c = src[pixels >> 3]; - - pixels &= 7; - - while (pixels--) - { - *dst++ = ((c & 128) >> 7); - - c <<= 1; - } - } - - return TRUE; -} - -static int unpack_grey_2(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)pwi; - int i = pixels; - uint8_t c; - - while (i >= 4) - { - c = *src++; - - *dst++ = (c >> 6); - *dst++ = (c >> 4) & 3; - *dst++ = (c >> 2) & 3; - *dst++ = (c) & 3; - - i -= 4; - } - - if (i) - { - c = *src; - - while (i--) - { - *dst++ = (c >> 6); - - c <<= 2; - } - } - - return TRUE; -} - -static int unpack_grey_4(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)pwi; - - PixelDePack16(src, dst, pixels >> 1); - - if (pixels & 1) - dst[pixels & 0xFFFE] = (src[pixels >> 1] >> 4); - - return TRUE; -} - -static int unpack_grey_8(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)src; - (void)dst; - (void)pixels; - (void)pwi; - return FALSE; -} - -static int unpack_grey_16(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)pwi; - while (pixels--) - { - *dst++ = *src++; - - src++; - } - - return TRUE; -} - -static int unpack_grey_16_2(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - if (pwi->m_trns_flag) - { - while (pixels--) - { - uint32_t v = (src[0] << 8) + src[1]; - src += 2; - - *dst++ = (uint8_t)(v >> 8); - *dst++ = (v == pwi->m_trns_value[0]) ? 0 : 255; - } - } - else - { - while (pixels--) - { - *dst++ = *src++; - *dst++ = 0xFF; - - src++; - } - } - - return TRUE; -} - -static int unpack_true_8(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - if (pwi->m_trns_flag) - { - const uint32_t tr = pwi->m_trns_value[0]; - const uint32_t tg = pwi->m_trns_value[1]; - const uint32_t tb = pwi->m_trns_value[2]; - - for (int i = 0; i < pixels; i++) - { - uint8_t r = src[i * 3 + 0]; - uint8_t g = src[i * 3 + 1]; - uint8_t b = src[i * 3 + 2]; - - dst[i * 4 + 0] = r; - dst[i * 4 + 1] = g; - dst[i * 4 + 2] = b; - dst[i * 4 + 3] = ((r == tr) && (g == tg) && (b == tb)) ? 0 : 255; - } - } - else - { - for (int i = 0; i < pixels; i++) - { - dst[i * 4 + 0] = src[i * 3 + 0]; - dst[i * 4 + 1] = src[i * 3 + 1]; - dst[i * 4 + 2] = src[i * 3 + 2]; - dst[i * 4 + 3] = 255; - } - } - - return TRUE; -} - -static int unpack_true_16(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - if (pwi->m_trns_flag) - { - const uint32_t tr = pwi->m_trns_value[0]; - const uint32_t tg = pwi->m_trns_value[1]; - const uint32_t tb = pwi->m_trns_value[2]; - - for (int i = 0; i < pixels; i++) - { - uint32_t r = (src[i * 6 + 0] << 8) + src[i * 6 + 1]; - uint32_t g = (src[i * 6 + 2] << 8) + src[i * 6 + 3]; - uint32_t b = (src[i * 6 + 4] << 8) + src[i * 6 + 5]; - - dst[i * 4 + 0] = (uint8_t)(r >> 8); - dst[i * 4 + 1] = (uint8_t)(g >> 8); - dst[i * 4 + 2] = (uint8_t)(b >> 8); - dst[i * 4 + 3] = ((r == tr) && (g == tg) && (b == tb)) ? 0 : 255; - } - } - else - { - while (pixels--) - { - dst[0] = src[0]; - dst[1] = src[2]; - dst[2] = src[4]; - dst[3] = 255; - - dst += 4; - src += 6; - } - } - - return TRUE; -} - -static int unpack_grey_alpha_8(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)pwi; - while (pixels--) - { - dst[0] = src[0]; - dst[1] = src[1]; - dst += 2; - src += 2; - } - - return TRUE; -} - -static int unpack_grey_alpha_16(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)pwi; - while (pixels--) - { - dst[0] = src[0]; - dst[1] = src[2]; - dst += 2; - src += 4; - } - - return TRUE; -} - -static int unpack_true_alpha_8(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)src; - (void)dst; - (void)pixels; - (void)pwi; - return FALSE; -} - -static int unpack_true_alpha_16(uint8_t* src, uint8_t* dst, int pixels, png_decoder* pwi) -{ - (void)pwi; - while (pixels--) - { - dst[0] = src[0]; - dst[1] = src[2]; - dst[2] = src[4]; - dst[3] = src[6]; - dst += 4; - src += 8; - } - - return TRUE; -} - -void png_decoder::unpredict_sub(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp) -{ - (void)lst; - if (bytes == (uint32_t)bpp) - return; - - cur += bpp; - bytes -= bpp; - - while (bytes--) - { - *cur += *(cur - bpp); - cur++; - } -} - -void png_decoder::unpredict_up(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp) -{ - (void)bpp; - while (bytes--) - *cur++ += *lst++; -} - -void png_decoder::unpredict_average(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp) -{ - int i; - - for (i = 0; i < bpp; i++) - *cur++ += (*lst++ >> 1); - - if (bytes == (uint32_t)bpp) - return; - - bytes -= bpp; - - while (bytes--) - { - *cur += ((*lst++ + *(cur - bpp)) >> 1); - cur++; - } -} - -inline uint8_t png_decoder::paeth_predictor(int a, int b, int c) -{ - int p, pa, pb, pc; - - /* a = left, b = above, c = upper left */ - - p = a + b - c; - - pa = abs(p - a); - pb = abs(p - b); - pc = abs(p - c); - - if ((pa <= pb) && (pa <= pc)) - return (uint8_t)a; - else if (pb <= pc) - return (uint8_t)b; - else - return (uint8_t)c; -} - -void png_decoder::unpredict_paeth(uint8_t* lst, uint8_t* cur, uint32_t bytes, int bpp) -{ - int i; - - for (i = 0; i < bpp; i++) - *cur++ += paeth_predictor(0, *lst++, 0); - - if (bytes == (uint32_t)bpp) - return; - - bytes -= bpp; - - while (bytes--) - { - int p, a, b, c, pa, pb, pc; - - a = *(cur - bpp); - b = *lst; - c = *(lst - bpp); - - p = a + b - c; - - pa = abs(p - a); - pb = abs(p - b); - pc = abs(p - c); - - if ((pa <= pb) && (pa <= pc)) - *cur++ += (uint8_t)a; - else if (pb <= pc) - *cur++ += (uint8_t)b; - else - *cur++ += (uint8_t)c; - - lst++; - } -} - -int png_decoder::adam7_pass_size(int size, int start, int step) -{ - if (size > start) - return 1 + ((size - 1) - start) / step; - else - return 0; -} - -// TRUE if no more data, negative on error, FALSE if OK -int png_decoder::decompress_line(uint32_t* bytes_decoded) -{ - int status; - uint32_t temp, src_bytes_left, dst_bytes_left; - - m_inflate_dst_buf_ofs = 0; - - for (; ; ) - { - if (m_inflate_src_buf_ofs == PNG_INFLATE_SRC_BUF_SIZE) - { - int res = unchunk_data(inflate_src_buf, PNG_INFLATE_SRC_BUF_SIZE, &temp); - if (res < 0) - return res; - m_inflate_eof_flag = res; - - m_inflate_src_buf_size = temp; - - m_inflate_src_buf_ofs = 0; - } - - for (; ; ) - { - src_bytes_left = m_inflate_src_buf_size - m_inflate_src_buf_ofs; - dst_bytes_left = m_dec_bytes_per_line - m_inflate_dst_buf_ofs; - - m_inflator.next_in = inflate_src_buf + m_inflate_src_buf_ofs; - m_inflator.avail_in = src_bytes_left; - - m_inflator.next_out = m_pCur_line_buf + m_inflate_dst_buf_ofs; - m_inflator.avail_out = dst_bytes_left; - - status = buminiz::mz_inflate2(&m_inflator, buminiz::MZ_NO_FLUSH, PVPNG_ADLER32_CHECKING); - - const uint32_t src_bytes_consumed = src_bytes_left - m_inflator.avail_in; - const uint32_t dst_bytes_written = dst_bytes_left - m_inflator.avail_out; - - m_inflate_src_buf_ofs += src_bytes_consumed; - m_inflate_dst_buf_ofs += dst_bytes_written; - - if (status != buminiz::MZ_OK) - { - if (status != buminiz::MZ_STREAM_END) - return terminate(PNG_INVALID_DATA_STREAM); - - if (bytes_decoded) - *bytes_decoded = m_inflate_dst_buf_ofs; - - return TRUE; - } - - if (m_inflate_dst_buf_ofs == m_dec_bytes_per_line) - { - if (bytes_decoded) - *bytes_decoded = m_inflate_dst_buf_ofs; - - return FALSE; - } - - if ((m_inflate_src_buf_ofs == m_inflate_src_buf_size) && - (m_inflate_eof_flag == FALSE)) - break; - } - } -} - -int png_decoder::find_iend_chunk() -{ - uint32_t dummy; - - while (!m_end_of_idat_chunks) - { - int res = unchunk_data(m_temp_buf, TEMP_BUF_SIZE * 4, &dummy); - if (res < 0) - return res; - } - - for (; ; ) - { - if ((m_chunk_name[0] == 'I') && - (m_chunk_name[1] == 'E') && - (m_chunk_name[2] == 'N') && - (m_chunk_name[3] == 'D')) - break; - - int res = fetch_next_chunk_init(); - if (res < 0) - return res; - } - - return 0; -} - -int png_decoder::png_decode(void** ppImg_ptr, uint32_t* pImg_len) -{ - int status; - uint8_t* decoded_line; - uint32_t bytes_decoded; - - if (m_adam7_decoded_flag) - { - if (m_pass_y_left == 0) - return PNG_ALLDONE; - - *ppImg_ptr = &m_adam7_image_buf[(m_ihdr.m_height - m_pass_y_left) * m_dst_bytes_per_line]; - *pImg_len = m_dst_bytes_per_line; - - m_pass_y_left--; - - return 0; - } - - if (m_pass_y_left == 0) - { - if (m_ihdr.m_ilace_type == 0) - { - status = find_iend_chunk(); - if (status < 0) - return status; - - return PNG_ALLDONE; - } - - for (; ; ) - { - if (++m_adam7_pass_num == 7) - { - status = find_iend_chunk(); - if (status < 0) - return status; - - return PNG_ALLDONE; - } - - if (((m_pass_y_left = m_adam7_pass_size_y[m_adam7_pass_num]) != 0) && - ((m_pass_x_size = m_adam7_pass_size_x[m_adam7_pass_num]) != 0)) - break; - } - - switch (m_adam7_pass_num) - { - case 0: - case 1: - case 3: - case 5: - m_adam7_pass_y = 0; - break; - case 2: - m_adam7_pass_y = 4; - break; - case 4: - m_adam7_pass_y = 2; - break; - case 6: - m_adam7_pass_y = 1; - break; - } - - switch (m_ihdr.m_color_type) - { - case PNG_COLOR_TYPE_GREYSCALE: - case PNG_COLOR_TYPE_PALETTIZED: - { - m_src_bytes_per_line = (((uint32_t)m_pass_x_size * m_ihdr.m_bit_depth) + 7) / 8; - break; - } - case PNG_COLOR_TYPE_TRUECOLOR: - { - m_src_bytes_per_line = ((uint32_t)m_pass_x_size * m_dec_bytes_per_pixel); - break; - } - case PNG_COLOR_TYPE_GREYSCALE_ALPHA: - { - m_src_bytes_per_line = ((uint32_t)m_pass_x_size * m_dec_bytes_per_pixel); - break; - } - case PNG_COLOR_TYPE_TRUECOLOR_ALPHA: - { - m_src_bytes_per_line = ((uint32_t)m_pass_x_size * m_dec_bytes_per_pixel); - break; - } - } - - m_dec_bytes_per_line = m_src_bytes_per_line + 1; - - memset(m_pPre_line_buf, 0, m_src_bytes_per_line); - } - - int res = decompress_line(&bytes_decoded); - if (res < 0) - return terminate(res); - - if (res) - { - if (m_ihdr.m_ilace_type == 0) - { - if (m_pass_y_left != 1) - return terminate(PNG_INCOMPLETE_IMAGE); - } - else - { - if ((m_pass_y_left != 1) && (m_adam7_pass_num != 6)) - return terminate(PNG_INCOMPLETE_IMAGE); - } - } - - if (bytes_decoded != m_dec_bytes_per_line) - return terminate(PNG_INCOMPLETE_IMAGE); - - decoded_line = &m_pCur_line_buf[1]; - - switch (m_pCur_line_buf[0]) - { - case 0: - break; - case 1: - { - unpredict_sub(m_pPre_line_buf, m_pCur_line_buf + 1, m_src_bytes_per_line, m_dec_bytes_per_pixel); - break; - } - case 2: - { - unpredict_up(m_pPre_line_buf, m_pCur_line_buf + 1, m_src_bytes_per_line, m_dec_bytes_per_pixel); - break; - } - case 3: - { - unpredict_average(m_pPre_line_buf, m_pCur_line_buf + 1, m_src_bytes_per_line, m_dec_bytes_per_pixel); - break; - } - case 4: - { - unpredict_paeth(m_pPre_line_buf, m_pCur_line_buf + 1, m_src_bytes_per_line, m_dec_bytes_per_pixel); - break; - } - default: - return terminate(PNG_UNS_PREDICTOR); - } - - memmove(m_pPre_line_buf, m_pCur_line_buf + 1, m_src_bytes_per_line); - - if (m_pProcess_func) - { - if ((*m_pProcess_func)(m_pCur_line_buf + 1, m_pPro_line_buf, m_pass_x_size, this)) - decoded_line = m_pPro_line_buf; - } - - if (m_ihdr.m_ilace_type == 0) - { - *ppImg_ptr = decoded_line; - *pImg_len = m_dst_bytes_per_line; - - if (--m_pass_y_left == 0) - { - res = decompress_line(&bytes_decoded); - if (res < 0) - return terminate(res); - - if (res == FALSE) - return terminate(PNG_TOO_MUCH_DATA); - - if (bytes_decoded) - return terminate(PNG_TOO_MUCH_DATA); - } - } - else - { - int i, x_ofs = 0, y_ofs = 0, x_stp = 0; - uint8_t* p = decoded_line; - - switch (m_adam7_pass_num) - { - case 0: { x_ofs = 0; x_stp = 8; break; } - case 1: { x_ofs = 4; x_stp = 8; break; } - case 2: { x_ofs = 0; x_stp = 4; break; } - case 3: { x_ofs = 2; x_stp = 4; break; } - case 4: { x_ofs = 0; x_stp = 2; break; } - case 5: { x_ofs = 1; x_stp = 2; break; } - case 6: { x_ofs = 0; x_stp = 1; break; } - } - - y_ofs = m_adam7_pass_y; - - assert(x_ofs < (int)m_ihdr.m_width); - assert(y_ofs < (int)m_ihdr.m_height); - - if (m_dst_bytes_per_pixel == 1) - { - for (i = m_pass_x_size; i > 0; i--, x_ofs += x_stp) - adam7_write_pixel_8(x_ofs, y_ofs, *p++); - } - else if (m_dst_bytes_per_pixel == 2) - { - for (i = m_pass_x_size; i > 0; i--, x_ofs += x_stp, p += 2) - adam7_write_pixel_16(x_ofs, y_ofs, p[0], p[1]); - } - else if (m_dst_bytes_per_pixel == 3) - { - for (i = m_pass_x_size; i > 0; i--, x_ofs += x_stp, p += 3) - adam7_write_pixel_24(x_ofs, y_ofs, p[0], p[1], p[2]); - } - else if (m_dst_bytes_per_pixel == 4) - { - for (i = m_pass_x_size; i > 0; i--, x_ofs += x_stp, p += 4) - adam7_write_pixel_32(x_ofs, y_ofs, p[0], p[1], p[2], p[3]); - } - else - { - assert(0); - } - - switch (m_adam7_pass_num) - { - case 0: - case 1: - case 2: { m_adam7_pass_y += 8; break; } - case 3: - case 4: { m_adam7_pass_y += 4; break; } - case 5: - case 6: { m_adam7_pass_y += 2; break; } - } - - if ((--m_pass_y_left == 0) && (m_adam7_pass_num == 6)) - { - res = decompress_line(&bytes_decoded); - if (res < 0) - return terminate(res); - - if (res == FALSE) - return terminate(PNG_TOO_MUCH_DATA); - - if (bytes_decoded) - return terminate(PNG_TOO_MUCH_DATA); - } - } - - return 0; -} - -void png_decoder::png_decode_end() -{ - uninitialize(); -} - -int png_decoder::png_decode_start() -{ - int status; - - if (m_img_supported_flag != TRUE) - return terminate(m_img_supported_flag); - - switch (m_ihdr.m_color_type) - { - case PNG_COLOR_TYPE_GREYSCALE: - { - if (m_ihdr.m_bit_depth == 16) - { - // This is a special case. We can't pass back 8-bit samples and let the caller decide on transparency because the PNG is 16-bits. - // So we expand to 8-bit Gray-Alpha and handle transparency during decoding. - // We don't do this with all grayscale cases because that would require more code to deal with 1/2/4bpp expansion. - m_dec_bytes_per_pixel = (m_ihdr.m_bit_depth + 7) / 8; - m_dst_bytes_per_pixel = 2; - - m_src_bytes_per_line = (((uint32_t)m_ihdr.m_width * m_ihdr.m_bit_depth) + 7) / 8; - m_dst_bytes_per_line = 2 * m_ihdr.m_width; - - m_pProcess_func = unpack_grey_16_2; - } - else - { - m_dec_bytes_per_pixel = (m_ihdr.m_bit_depth + 7) / 8; - m_dst_bytes_per_pixel = 1; - - m_src_bytes_per_line = (((uint32_t)m_ihdr.m_width * m_ihdr.m_bit_depth) + 7) / 8; - m_dst_bytes_per_line = m_ihdr.m_width; - - if (m_ihdr.m_bit_depth == 1) - m_pProcess_func = unpack_grey_1; - else if (m_ihdr.m_bit_depth == 2) - m_pProcess_func = unpack_grey_2; - else if (m_ihdr.m_bit_depth == 4) - m_pProcess_func = unpack_grey_4; - else - m_pProcess_func = unpack_grey_8; - } - - break; - } - case PNG_COLOR_TYPE_PALETTIZED: - { - m_dec_bytes_per_pixel = (m_ihdr.m_bit_depth + 7) / 8; - m_dst_bytes_per_pixel = 1; - - m_src_bytes_per_line = (((uint32_t)m_ihdr.m_width * m_ihdr.m_bit_depth) + 7) / 8; - m_dst_bytes_per_line = m_ihdr.m_width; - - if (m_ihdr.m_bit_depth == 1) - m_pProcess_func = unpack_grey_1; - else if (m_ihdr.m_bit_depth == 2) - m_pProcess_func = unpack_grey_2; - else if (m_ihdr.m_bit_depth == 4) - m_pProcess_func = unpack_grey_4; - else if (m_ihdr.m_bit_depth == 8) - m_pProcess_func = unpack_grey_8; - else if (m_ihdr.m_bit_depth == 16) - m_pProcess_func = unpack_grey_16; - - break; - } - case PNG_COLOR_TYPE_TRUECOLOR: - { - // We always pass back alpha with transparency handling. - m_dec_bytes_per_pixel = 3 * (m_ihdr.m_bit_depth / 8); - m_dst_bytes_per_pixel = 4; - - m_src_bytes_per_line = ((uint32_t)m_ihdr.m_width * m_dec_bytes_per_pixel); - m_dst_bytes_per_line = 4 * m_ihdr.m_width; - - if (m_ihdr.m_bit_depth == 8) - m_pProcess_func = unpack_true_8; - else if (m_ihdr.m_bit_depth == 16) - m_pProcess_func = unpack_true_16; - - break; - } - case PNG_COLOR_TYPE_GREYSCALE_ALPHA: - { - m_dec_bytes_per_pixel = 2 * (m_ihdr.m_bit_depth / 8); - m_dst_bytes_per_pixel = 2; - - m_src_bytes_per_line = ((uint32_t)m_ihdr.m_width * m_dec_bytes_per_pixel); - m_dst_bytes_per_line = m_ihdr.m_width * 2; - - if (m_ihdr.m_bit_depth == 8) - m_pProcess_func = unpack_grey_alpha_8; - else if (m_ihdr.m_bit_depth == 16) - m_pProcess_func = unpack_grey_alpha_16; - - break; - } - case PNG_COLOR_TYPE_TRUECOLOR_ALPHA: - { - m_dec_bytes_per_pixel = 4 * (m_ihdr.m_bit_depth / 8); - m_dst_bytes_per_pixel = 4; - - m_src_bytes_per_line = ((uint32_t)m_ihdr.m_width * m_dec_bytes_per_pixel); - m_dst_bytes_per_line = 4 * m_ihdr.m_width; - - if (m_ihdr.m_bit_depth == 8) - m_pProcess_func = unpack_true_alpha_8; - else - m_pProcess_func = unpack_true_alpha_16; - - break; - } - } - - m_dec_bytes_per_line = m_src_bytes_per_line + 1; - - m_pPre_line_buf = (uint8_t*)png_calloc(m_src_bytes_per_line); - m_pCur_line_buf = (uint8_t*)png_calloc(m_dec_bytes_per_line); - m_pPro_line_buf = (uint8_t*)png_calloc(m_dst_bytes_per_line); - - if (!m_pPre_line_buf || !m_pCur_line_buf || !m_pPro_line_buf) - return terminate(PNG_NOTENOUGHMEM); - - m_inflate_src_buf_ofs = PNG_INFLATE_SRC_BUF_SIZE; - - int res = mz_inflateInit(&m_inflator); - if (res != 0) - return terminate(PNG_DECERROR); - - if (m_ihdr.m_ilace_type == 1) - { - int i; - uint32_t total_lines, lines_processed; - - m_adam7_pass_size_x[0] = adam7_pass_size(m_ihdr.m_width, 0, 8); - m_adam7_pass_size_x[1] = adam7_pass_size(m_ihdr.m_width, 4, 8); - m_adam7_pass_size_x[2] = adam7_pass_size(m_ihdr.m_width, 0, 4); - m_adam7_pass_size_x[3] = adam7_pass_size(m_ihdr.m_width, 2, 4); - m_adam7_pass_size_x[4] = adam7_pass_size(m_ihdr.m_width, 0, 2); - m_adam7_pass_size_x[5] = adam7_pass_size(m_ihdr.m_width, 1, 2); - m_adam7_pass_size_x[6] = adam7_pass_size(m_ihdr.m_width, 0, 1); - - m_adam7_pass_size_y[0] = adam7_pass_size(m_ihdr.m_height, 0, 8); - m_adam7_pass_size_y[1] = adam7_pass_size(m_ihdr.m_height, 0, 8); - m_adam7_pass_size_y[2] = adam7_pass_size(m_ihdr.m_height, 4, 8); - m_adam7_pass_size_y[3] = adam7_pass_size(m_ihdr.m_height, 0, 4); - m_adam7_pass_size_y[4] = adam7_pass_size(m_ihdr.m_height, 2, 4); - m_adam7_pass_size_y[5] = adam7_pass_size(m_ihdr.m_height, 0, 2); - m_adam7_pass_size_y[6] = adam7_pass_size(m_ihdr.m_height, 1, 2); - - m_adam7_image_buf.resize(m_dst_bytes_per_line * m_ihdr.m_height); - - m_adam7_pass_num = -1; - - m_pass_y_left = 0; - - total_lines = lines_processed = 0; - - for (i = 0; i < 7; i++) - total_lines += m_adam7_pass_size_y[i]; - - for (; ; ) - { - void* dummy_ptr = nullptr; - uint32_t dummy_len = 0; - - status = png_decode(&dummy_ptr, &dummy_len); - - if (status) - { - if (status == PNG_ALLDONE) - break; - else - { - uninitialize(); - - return status; - } - } - - lines_processed++; - } - - m_adam7_decoded_flag = TRUE; - m_pass_y_left = m_ihdr.m_height; - } - else - { - m_pass_x_size = m_ihdr.m_width; - m_pass_y_left = m_ihdr.m_height; - } - - return 0; -} - -void png_decoder::calc_gamma_table() -{ - if (m_gama_value == 45000) - { - for (int i = 0; i < 256; i++) - m_gamma_table[i] = (uint8_t)i; - return; - } - - float gamma = (float)(m_gama_value) / 100000.0f; - - gamma = 1.0f / (gamma * 2.2f); - - for (int i = 0; i < 256; i++) - { - float temp = powf((float)(i) / 255.0f, gamma) * 255.0f; - - int j = (int)(temp + .5f); - - if (j < 0) - j = 0; - else if (j > 255) - j = 255; - - m_gamma_table[i] = (uint8_t)j; - } -} - -void png_decoder::create_grey_palette() -{ - int i, j; - uint8_t* p = m_img_pal; - - const int img_colors = minimum(256, 1 << m_ihdr.m_bit_depth); - for (i = 0; i < img_colors; i++) - { - j = ((uint32_t)255 * (uint32_t)i) / (img_colors - 1); - - *p++ = (uint8_t)j; - *p++ = (uint8_t)j; - *p++ = (uint8_t)j; - } -} - -int png_decoder::read_signature() -{ - if (m_pFile->read(m_temp_buf, 8) != 8) - return terminate(PNG_UNKNOWNTYPE); - - if ((m_temp_buf[0] != 137) || - (m_temp_buf[1] != 80) || - (m_temp_buf[2] != 78) || - (m_temp_buf[3] != 71) || - (m_temp_buf[4] != 13) || - (m_temp_buf[5] != 10) || - (m_temp_buf[6] != 26) || - (m_temp_buf[7] != 10)) - { - return terminate(PNG_UNKNOWNTYPE); - } - - return 0; -} - -int png_decoder::read_ihdr_chunk() -{ - int res = fetch_next_chunk_init(); - if (res < 0) - return res; - - if ((m_chunk_name[0] != 'I') || (m_chunk_name[1] != 'H') || (m_chunk_name[2] != 'D') || (m_chunk_name[3] != 'R') || (m_chunk_size != 13)) - return terminate(PNG_NO_IHDR); - - int64_t v64 = fetch_next_chunk_dword(); - if (v64 < 0) - return (int)v64; - m_ihdr.m_width = (uint32_t)v64; - - v64 = fetch_next_chunk_dword(); - if (v64 < 0) - return (int)v64; - m_ihdr.m_height = (uint32_t)v64; - - if ((m_ihdr.m_width == 0) || (m_ihdr.m_width > MAX_SUPPORTED_RES)) - return terminate(PNG_BAD_WIDTH); - - if ((m_ihdr.m_height == 0) || (m_ihdr.m_height > MAX_SUPPORTED_RES)) - return terminate(PNG_BAD_HEIGHT); - - int v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_ihdr.m_bit_depth = (uint8_t)v; - - v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_ihdr.m_color_type = (uint8_t)v; - - v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_ihdr.m_comp_type = (uint8_t)v; - - v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_ihdr.m_filter_type = (uint8_t)v; - - v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_ihdr.m_ilace_type = (uint8_t)v; - - if (m_ihdr.m_comp_type != 0) - m_img_supported_flag = PNG_UNS_COMPRESSION; - - if (m_ihdr.m_filter_type != 0) - m_img_supported_flag = PNG_UNS_FILTER; - - if (m_ihdr.m_ilace_type > 1) - m_img_supported_flag = PNG_UNS_ILACE; - - switch (m_ihdr.m_color_type) - { - case PNG_COLOR_TYPE_GREYSCALE: - { - switch (m_ihdr.m_bit_depth) - { - case 1: - case 2: - case 4: - case 8: - case 16: - { - break; - } - default: - return terminate(PNG_BAD_BIT_DEPTH); - } - - break; - } - case PNG_COLOR_TYPE_PALETTIZED: - { - switch (m_ihdr.m_bit_depth) - { - case 1: - case 2: - case 4: - case 8: - { - break; - } - default: - return terminate(PNG_BAD_BIT_DEPTH); - } - - break; - } - case PNG_COLOR_TYPE_TRUECOLOR: - case PNG_COLOR_TYPE_GREYSCALE_ALPHA: - case PNG_COLOR_TYPE_TRUECOLOR_ALPHA: - { - switch (m_ihdr.m_bit_depth) - { - case 8: - case 16: - { - break; - } - default: - return terminate(PNG_BAD_BIT_DEPTH); - } - - break; - } - default: - return terminate(PNG_UNS_COLOR_TYPE); - } - - return 0; -} - -int png_decoder::read_bkgd_chunk() -{ - m_bkgd_flag = TRUE; - - if (m_ihdr.m_color_type == PNG_COLOR_TYPE_PALETTIZED) - { - int v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_bkgd_value[0] = v; - } - else if ((m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE) || (m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE_ALPHA)) - { - int v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_bkgd_value[0] = v; - } - else if ((m_ihdr.m_color_type == PNG_COLOR_TYPE_TRUECOLOR) || (m_ihdr.m_color_type == PNG_COLOR_TYPE_TRUECOLOR_ALPHA)) - { - int v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_bkgd_value[0] = v; - - v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_bkgd_value[1] = v; - - v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_bkgd_value[2] = v; - } - - return 0; -} - -int png_decoder::read_gama_chunk() -{ - m_gama_flag = TRUE; - - int64_t v = fetch_next_chunk_dword(); - if (v < 0) - return (int)v; - - m_gama_value = (uint32_t)v; - - return 0; -} - -int png_decoder::read_trns_chunk() -{ - int i; - - m_trns_flag = TRUE; - - if (m_ihdr.m_color_type == PNG_COLOR_TYPE_PALETTIZED) - { - for (i = 0; i < 256; i++) - m_trns_value[i] = 255; - - const uint32_t img_colors = 1 << m_ihdr.m_bit_depth; - if (m_chunk_size > (uint32_t)img_colors) - return terminate(PNG_BAD_TRNS_CHUNK); - - for (i = 0; i < (int)m_chunk_size; i++) - { - int v = fetch_next_chunk_byte(); - if (v < 0) - return v; - m_trns_value[i] = v; - } - } - else if (m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE) - { - int v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_trns_value[0] = v; - } - else if (m_ihdr.m_color_type == PNG_COLOR_TYPE_TRUECOLOR) - { - int v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_trns_value[0] = v; - - v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_trns_value[1] = v; - - v = fetch_next_chunk_word(); - if (v < 0) - return v; - m_trns_value[2] = v; - } - else - { - return terminate(PNG_BAD_TRNS_CHUNK); - } - return 0; -} - -int png_decoder::read_plte_chunk() -{ - int i, j; - uint8_t* p; - - if (m_plte_flag) - return terminate(PNG_BAD_PLTE_CHUNK); - - m_plte_flag = TRUE; - - memset(m_img_pal, 0, 768); - - if (m_chunk_size % 3) - return terminate(PNG_BAD_PLTE_CHUNK); - - j = m_chunk_size / 3; - - const int img_colors = minimum(256, 1 << m_ihdr.m_bit_depth); - if (j > img_colors) - return terminate(PNG_BAD_PLTE_CHUNK); - - if ((m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE) || - (m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE_ALPHA)) - return terminate(PNG_BAD_PLTE_CHUNK); - - p = m_img_pal; - - for (i = 0; i < j; i++) - { - int v = fetch_next_chunk_byte(); - if (v < 0) - return v; - *p++ = (uint8_t)v; - - v = fetch_next_chunk_byte(); - if (v < 0) - return v; - *p++ = (uint8_t)v; - - v = fetch_next_chunk_byte(); - if (v < 0) - return v; - *p++ = (uint8_t)v; - } - - return 0; -} - -int png_decoder::find_idat_chunk() -{ - for (; ; ) - { - int res = fetch_next_chunk_init(); - if (res < 0) - return res; - - if (m_chunk_name[0] & 32) /* ancillary? */ - { - if ((m_chunk_name[0] == 'b') && (m_chunk_name[1] == 'K') && (m_chunk_name[2] == 'G') && (m_chunk_name[3] == 'D')) - { - res = read_bkgd_chunk(); - if (res < 0) - return res; - } - else if ((m_chunk_name[0] == 'g') && (m_chunk_name[1] == 'A') && (m_chunk_name[2] == 'M') && (m_chunk_name[3] == 'A')) - { - res = read_gama_chunk(); - if (res < 0) - return res; - } - else if ((m_chunk_name[0] == 't') && (m_chunk_name[1] == 'R') && (m_chunk_name[2] == 'N') && (m_chunk_name[3] == 'S')) - { - res = read_trns_chunk(); - if (res < 0) - return res; - } - } - else - { - if ((m_chunk_name[0] == 'P') && (m_chunk_name[1] == 'L') && (m_chunk_name[2] == 'T') && (m_chunk_name[3] == 'E')) - { - res = read_plte_chunk(); - if (res < 0) - return res; - } - else if ((m_chunk_name[0] == 'I') && (m_chunk_name[1] == 'D') && (m_chunk_name[2] == 'A') && (m_chunk_name[3] == 'T')) - { - break; - } - else - { - m_img_supported_flag = PNG_UNS_CRITICAL_CHUNK; - } - } - } - - return 0; -} - -png_decoder::png_decoder() -{ - clear(); -} - -png_decoder::~png_decoder() -{ - uninitialize(); -} - -void png_decoder::clear() -{ - clear_obj(m_pMalloc_blocks); - - m_pFile = nullptr; - - clear_obj(m_img_pal); - - m_img_supported_flag = FALSE; - - m_adam7_image_buf.clear(); - - clear_obj(m_ihdr); - - m_chunk_flag = FALSE; - m_chunk_size = 0; - m_chunk_left = 0; - m_chunk_crc32 = 0; - clear_obj(m_chunk_name); - - m_end_of_idat_chunks = 0; - - m_dec_bytes_per_pixel = 0; - m_dst_bytes_per_pixel = 0; - - m_dec_bytes_per_line = 0; - m_src_bytes_per_line = 0; - m_dst_bytes_per_line = 0; - - m_pProcess_func = nullptr; - - m_pPre_line_buf = nullptr; - m_pCur_line_buf = nullptr; - m_pPro_line_buf = nullptr; - - m_bkgd_flag = FALSE; - clear_obj(m_bkgd_value); - - m_gama_flag = FALSE; - m_gama_value = 0; - - m_plte_flag = FALSE; - - m_trns_flag = FALSE; - clear_obj(m_trns_value); - - clear_obj(m_inflator); - - m_inflate_src_buf_ofs = 0; - m_inflate_src_buf_size = 0; - m_inflate_dst_buf_ofs = 0; - - m_inflate_eof_flag = FALSE; - - clear_obj(m_trns_value); - - m_pass_x_size = 0; - m_pass_y_left = 0; - - m_adam7_pass_num = 0; - m_adam7_pass_y = 0; - clear_obj(m_adam7_pass_size_x); - clear_obj(m_adam7_pass_size_y); - - m_adam7_decoded_flag = FALSE; - - m_scanned_flag = false; - - m_terminate_status = 0; -} - -int png_decoder::png_scan(png_file *pFile) -{ - m_pFile = pFile; - - m_img_supported_flag = TRUE; - m_terminate_status = 0; - - int res = read_signature(); - if (res != 0) - return res; - - res = read_ihdr_chunk(); - if (res != 0) - return res; - - res = find_idat_chunk(); - if (res != 0) - return res; - - if (m_gama_flag) - calc_gamma_table(); - - if (m_ihdr.m_color_type == PNG_COLOR_TYPE_PALETTIZED) - { - if (!m_plte_flag) - return terminate(PNG_MISSING_PALETTE); - } - else if ((m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE) || (m_ihdr.m_color_type == PNG_COLOR_TYPE_GREYSCALE_ALPHA)) - { - create_grey_palette(); - } - - m_scanned_flag = true; - - return 0; -} - -static inline uint8_t get_709_luma(uint32_t r, uint32_t g, uint32_t b) -{ - return (uint8_t)((13938U * r + 46869U * g + 4729U * b + 32768U) >> 16U); -} - -bool get_png_info(const void* pImage_buf, size_t buf_size, png_info &info) -{ - memset(&info, 0, sizeof(info)); - - if ((!pImage_buf) || (buf_size < MIN_PNG_SIZE)) - return false; - - png_readonly_memory_file mf; - mf.init(pImage_buf, buf_size); - - png_decoder dec; - - int status = dec.png_scan(&mf); - if ((status != 0) || (dec.m_img_supported_flag != TRUE)) - return false; - - info.m_width = dec.m_ihdr.m_width; - info.m_height = dec.m_ihdr.m_height; - info.m_bit_depth = dec.m_ihdr.m_bit_depth; - info.m_color_type = dec.m_ihdr.m_color_type; - info.m_has_gamma = dec.m_gama_flag != 0; - info.m_gamma_value = dec.m_gama_value; - info.m_has_trns = dec.m_trns_flag != 0; - - switch (dec.m_ihdr.m_color_type) - { - case PNG_COLOR_TYPE_GREYSCALE: - info.m_num_chans = dec.m_trns_flag ? 2 : 1; - break; - case PNG_COLOR_TYPE_GREYSCALE_ALPHA: - info.m_num_chans = 2; - break; - case PNG_COLOR_TYPE_PALETTIZED: - case PNG_COLOR_TYPE_TRUECOLOR: - info.m_num_chans = dec.m_trns_flag ? 4 : 3; - break; - case PNG_COLOR_TYPE_TRUECOLOR_ALPHA: - info.m_num_chans = 4; - break; - default: - assert(0); - break; - } - - return true; -} - -void* load_png(const void* pImage_buf, size_t buf_size, uint32_t desired_chans, uint32_t& width, uint32_t& height, uint32_t& num_chans) -{ - width = 0; - height = 0; - num_chans = 0; - - if ((!pImage_buf) || (buf_size < MIN_PNG_SIZE)) - { - assert(0); - return nullptr; - } - - if (desired_chans > 4) - { - assert(0); - return nullptr; - } - - png_readonly_memory_file mf; - mf.init(pImage_buf, buf_size); - - png_decoder dec; - - int status = dec.png_scan(&mf); - if ((status != 0) || (dec.m_img_supported_flag != TRUE)) - return nullptr; - - uint32_t colortype = dec.m_ihdr.m_color_type; - switch (colortype) - { - case PNG_COLOR_TYPE_GREYSCALE: - num_chans = dec.m_trns_flag ? 2 : 1; - break; - case PNG_COLOR_TYPE_GREYSCALE_ALPHA: - num_chans = 2; - break; - case PNG_COLOR_TYPE_PALETTIZED: - case PNG_COLOR_TYPE_TRUECOLOR: - num_chans = dec.m_trns_flag ? 4 : 3; - break; - case PNG_COLOR_TYPE_TRUECOLOR_ALPHA: - num_chans = 4; - break; - default: - assert(0); - break; - } - - if (!desired_chans) - desired_chans = num_chans; - -#if 0 - printf("lode_png: %ux%u bitdepth: %u colortype: %u trns: %u ilace: %u\n", - dec.m_ihdr.m_width, - dec.m_ihdr.m_height, - dec.m_ihdr.m_bit_depth, - dec.m_ihdr.m_color_type, - dec.m_trns_flag, - dec.m_ihdr.m_ilace_type); -#endif - - width = dec.m_ihdr.m_width; - height = dec.m_ihdr.m_height; - uint32_t bitdepth = dec.m_ihdr.m_bit_depth; - uint32_t pitch = width * desired_chans; - - uint64_t total_size = (uint64_t)pitch * height; - if (total_size > 0x7FFFFFFFULL) - return nullptr; - - uint8_t* pBuf = (uint8_t*)malloc((size_t)total_size); - if (!pBuf) - return nullptr; - - if (dec.png_decode_start() != 0) - { - free(pBuf); - return nullptr; - } - - uint8_t* pDst = pBuf; - - for (uint32_t y = 0; y < height; y++, pDst += pitch) - { - uint8_t* pLine; - uint32_t line_bytes; - if (dec.png_decode((void**)&pLine, &line_bytes) != 0) - { - free(pBuf); - return nullptr; - } - - // This conversion matrix handles converting RGB->Luma, converting grayscale samples to 8-bit samples, converting palettized images, and PNG transparency. - switch (colortype) - { - case PNG_COLOR_TYPE_GREYSCALE: - { - uint32_t trans_value = dec.m_trns_value[0]; - - switch (desired_chans) - { - case 1: - if (bitdepth == 16) - { - assert(line_bytes == width * 2); - - for (uint32_t i = 0; i < width; i++) - pDst[i] = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - } - else if (bitdepth == 8) - { - assert(line_bytes == width); - memcpy(pDst, pLine, pitch); - } - else - { - assert(line_bytes == width); - for (uint32_t i = 0; i < width; i++) - pDst[i] = dec.m_img_pal[pLine[i] * 3]; - } - break; - case 2: - if (bitdepth == 16) - { - assert(line_bytes == width * 2); - for (uint32_t i = 0; i < width; i++) - { - pDst[i * 2 + 0] = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - pDst[i * 2 + 1] = pLine[i * 2 + 1]; - } - } - else if (dec.m_trns_flag) - { - assert(line_bytes == width); - for (uint32_t i = 0; i < width; i++) - { - pDst[i * 2 + 0] = dec.m_img_pal[pLine[i] * 3]; - pDst[i * 2 + 1] = (pLine[i] == trans_value) ? 0 : 255; - } - } - else - { - assert(line_bytes == width); - for (uint32_t i = 0; i < width; i++) - { - pDst[i * 2 + 0] = dec.m_img_pal[pLine[i] * 3]; - pDst[i * 2 + 1] = 255; - } - } - break; - case 3: - if (bitdepth == 16) - { - assert(line_bytes == width * 2); - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - pDst[i * 3 + 0] = c; - pDst[i * 3 + 1] = c; - pDst[i * 3 + 2] = c; - } - } - else - { - assert(line_bytes == width); - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i] * 3]; - pDst[i * 3 + 0] = c; - pDst[i * 3 + 1] = c; - pDst[i * 3 + 2] = c; - } - } - break; - case 4: - if (bitdepth == 16) - { - assert(line_bytes == width * 2); - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - pDst[i * 4 + 0] = c; - pDst[i * 4 + 1] = c; - pDst[i * 4 + 2] = c; - pDst[i * 4 + 3] = pLine[i * 2 + 1]; - } - } - else if (dec.m_trns_flag) - { - assert(line_bytes == width); - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i] * 3]; - pDst[i * 4 + 0] = c; - pDst[i * 4 + 1] = c; - pDst[i * 4 + 2] = c; - pDst[i * 4 + 3] = (pLine[i] == trans_value) ? 0 : 255; - } - } - else - { - assert(line_bytes == width); - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i] * 3]; - pDst[i * 4 + 0] = c; - pDst[i * 4 + 1] = c; - pDst[i * 4 + 2] = c; - pDst[i * 4 + 3] = 255; - } - } - break; - } - - break; - } - case PNG_COLOR_TYPE_GREYSCALE_ALPHA: - { - assert(line_bytes == width * 2); - - switch (desired_chans) - { - case 1: - for (uint32_t i = 0; i < width; i++) - pDst[i] = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - break; - case 2: - assert(line_bytes == pitch); - if (bitdepth >= 8) - memcpy(pDst, pLine, pitch); - else - { - for (uint32_t i = 0; i < width; i++) - { - pDst[i * 2 + 0] = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - pDst[i * 2 + 1] = pLine[i * 2 + 1]; - } - } - break; - case 3: - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - pDst[i * 3 + 0] = c; - pDst[i * 3 + 1] = c; - pDst[i * 3 + 2] = c; - } - break; - case 4: - for (uint32_t i = 0; i < width; i++) - { - uint8_t c = dec.m_img_pal[pLine[i * 2 + 0] * 3]; - pDst[i * 4 + 0] = c; - pDst[i * 4 + 1] = c; - pDst[i * 4 + 2] = c; - pDst[i * 4 + 3] = pLine[i * 2 + 1]; - } - break; - } - - break; - } - case PNG_COLOR_TYPE_PALETTIZED: - { - assert(line_bytes == width); - - switch (desired_chans) - { - case 1: - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &dec.m_img_pal[pLine[i] * 3]; - pDst[i] = get_709_luma(p[0], p[1], p[2]); - } - break; - case 2: - if (dec.m_trns_flag) - { - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &dec.m_img_pal[pLine[i] * 3]; - pDst[i * 2 + 0] = get_709_luma(p[0], p[1], p[2]); - pDst[i * 2 + 1] = (uint8_t)dec.m_trns_value[pLine[i]]; - } - } - else - { - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &dec.m_img_pal[pLine[i] * 3]; - pDst[i * 2 + 0] = get_709_luma(p[0], p[1], p[2]); - pDst[i * 2 + 1] = 255; - } - } - break; - case 3: - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &dec.m_img_pal[pLine[i] * 3]; - pDst[i * 3 + 0] = p[0]; - pDst[i * 3 + 1] = p[1]; - pDst[i * 3 + 2] = p[2]; - } - break; - case 4: - if (dec.m_trns_flag) - { - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &dec.m_img_pal[pLine[i] * 3]; - pDst[i * 4 + 0] = p[0]; - pDst[i * 4 + 1] = p[1]; - pDst[i * 4 + 2] = p[2]; - pDst[i * 4 + 3] = (uint8_t)dec.m_trns_value[pLine[i]]; - } - } - else - { - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &dec.m_img_pal[pLine[i] * 3]; - pDst[i * 4 + 0] = p[0]; - pDst[i * 4 + 1] = p[1]; - pDst[i * 4 + 2] = p[2]; - pDst[i * 4 + 3] = 255; - } - } - break; - } - - break; - } - case PNG_COLOR_TYPE_TRUECOLOR: - case PNG_COLOR_TYPE_TRUECOLOR_ALPHA: - { - assert(line_bytes == width * 4); - - switch (desired_chans) - { - case 1: - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &pLine[i * 4]; - pDst[i] = get_709_luma(p[0], p[1], p[2]); - } - break; - case 2: - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &pLine[i * 4]; - pDst[i * 2 + 0] = get_709_luma(p[0], p[1], p[2]); - pDst[i * 2 + 1] = p[3]; - } - break; - case 3: - for (uint32_t i = 0; i < width; i++) - { - const uint8_t* p = &pLine[i * 4]; - pDst[i * 3 + 0] = p[0]; - pDst[i * 3 + 1] = p[1]; - pDst[i * 3 + 2] = p[2]; - } - break; - case 4: - memcpy(pDst, pLine, pitch); - break; - } - - break; - } - default: - assert(0); - break; - } - - } // y - - return pBuf; -} - -} // namespace pv_png - -/* - This is free and unencumbered software released into the public domain. - - Anyone is free to copy, modify, publish, use, compile, sell, or - distribute this software, either in source code form or as a compiled - binary, for any purpose, commercial or non-commercial, and by any - means. - - In jurisdictions that recognize copyright laws, the author or authors - of this software dedicate any and all copyright interest in the - software to the public domain. We make this dedication for the benefit - of the public at large and to the detriment of our heirs and - successors. We intend this dedication to be an overt act of - relinquishment in perpetuity of all present and future rights to this - software under copyright law. - - THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, - EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. - IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR - OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR - OTHER DEALINGS IN THE SOFTWARE. - - For more information, please refer to - - Richard Geldreich, Jr. - 1/20/2022 -*/ diff --git a/WickedEngine/Utility/basis_universal/encoder/pvpngreader.h b/WickedEngine/Utility/basis_universal/encoder/pvpngreader.h deleted file mode 100644 index 4f3fe46b8..000000000 --- a/WickedEngine/Utility/basis_universal/encoder/pvpngreader.h +++ /dev/null @@ -1,48 +0,0 @@ -// pngreader.h - Public Domain - see unlicense at bottom of pvpngreader.cpp -#pragma once -#include - -namespace pv_png -{ - // PNG color types - enum - { - PNG_COLOR_TYPE_GREYSCALE = 0, - PNG_COLOR_TYPE_TRUECOLOR = 2, - PNG_COLOR_TYPE_PALETTIZED = 3, - PNG_COLOR_TYPE_GREYSCALE_ALPHA = 4, - PNG_COLOR_TYPE_TRUECOLOR_ALPHA = 6 - }; - - // PNG file description - struct png_info - { - uint32_t m_width; - uint32_t m_height; - - uint32_t m_num_chans; // The number of channels, factoring in transparency. Ranges from [1-4]. - - uint32_t m_bit_depth; // PNG ihdr bit depth: 1, 2, 4, 8 or 16 - uint32_t m_color_type; // PNG ihdr color type, PNG_COLOR_TYPE_GRAYSCALE etc. - - bool m_has_gamma; // true if the PNG file had a GAMA chunk - uint32_t m_gamma_value; // PNG GAMA chunk value, scaled by 100000 - - bool m_has_trns; // true if the PNG file used colorkey transparency - }; - - // Retrieved information about the PNG file. - // Returns false on any errors. - bool get_png_info(const void* pImage_buf, size_t buf_size, png_info& info); - - // Input parameters: - // pImage_buf, buf_size - pointer to PNG image data - // desired_chans - desired number of output channels. 0=auto, 1=grayscale, 2=grayscale alpha, 3=24bpp RGB, 4=32bpp RGBA - // - // Output parameters: - // width, height - PNG image resolution - // num_chans - actual number of channels in PNG, from [1,4] (factoring in transparency) - // - // Returns nullptr on any errors. - void* load_png(const void* pImage_buf, size_t buf_size, uint32_t desired_chans, uint32_t &width, uint32_t &height, uint32_t& num_chans); -} diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu.h b/WickedEngine/Utility/basis_universal/transcoder/basisu.h deleted file mode 100644 index 1230b59ec..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu.h +++ /dev/null @@ -1,478 +0,0 @@ -// basisu.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// Important: If compiling with gcc, be sure strict aliasing is disabled: -fno-strict-aliasing -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once - -#ifdef _MSC_VER - - #pragma warning (disable : 4201) - #pragma warning (disable : 4127) // warning C4127: conditional expression is constant - #pragma warning (disable : 4530) // C++ exception handler used, but unwind semantics are not enabled. - - // Slamming this off always for v1.16 because we've gotten rid of most std containers. - #ifndef BASISU_NO_ITERATOR_DEBUG_LEVEL - #define BASISU_NO_ITERATOR_DEBUG_LEVEL (1) - #endif - - #ifndef BASISU_NO_ITERATOR_DEBUG_LEVEL - //#define _HAS_ITERATOR_DEBUGGING 0 - - #if defined(_DEBUG) || defined(DEBUG) - // This is madness, but we need to disable iterator debugging in debug builds or the encoder is unsable because MSVC's iterator debugging implementation is totally broken. - #ifndef _ITERATOR_DEBUG_LEVEL - #define _ITERATOR_DEBUG_LEVEL 1 - #endif - #ifndef _SECURE_SCL - #define _SECURE_SCL 1 - #endif - #else // defined(_DEBUG) || defined(DEBUG) - #ifndef _SECURE_SCL - #define _SECURE_SCL 0 - #endif - #ifndef _ITERATOR_DEBUG_LEVEL - #define _ITERATOR_DEBUG_LEVEL 0 - #endif - #endif // defined(_DEBUG) || defined(DEBUG) - - #endif // BASISU_NO_ITERATOR_DEBUG_LEVEL - -#endif // _MSC_VER - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include -#include -#include -#include -#include -#include - -#include "basisu_containers.h" - -#ifdef max -#undef max -#endif - -#ifdef min -#undef min -#endif - -#ifdef _WIN32 -#define strcasecmp _stricmp -#endif - -// Set to one to enable debug printf()'s when any errors occur, for development/debugging. Especially useful for WebGL development. -#ifndef BASISU_FORCE_DEVEL_MESSAGES -#define BASISU_FORCE_DEVEL_MESSAGES 0 -#endif - -#define BASISU_NOTE_UNUSED(x) (void)(x) -#define BASISU_ARRAY_SIZE(x) (sizeof(x) / sizeof(x[0])) -#define BASISU_NO_EQUALS_OR_COPY_CONSTRUCT(x) x(const x &) = delete; x& operator= (const x &) = delete; -#define BASISU_ASSUME(x) static_assert(x, #x); -#define BASISU_OFFSETOF(s, m) offsetof(s, m) -#define BASISU_STRINGIZE(x) #x -#define BASISU_STRINGIZE2(x) BASISU_STRINGIZE(x) - -#if BASISU_FORCE_DEVEL_MESSAGES - #define BASISU_DEVEL_ERROR(...) do { basisu::debug_printf(__VA_ARGS__); } while(0) -#else - #define BASISU_DEVEL_ERROR(...) -#endif - -namespace basisu -{ - // Types/utilities - -#ifdef _WIN32 - const char BASISU_PATH_SEPERATOR_CHAR = '\\'; -#else - const char BASISU_PATH_SEPERATOR_CHAR = '/'; -#endif - - typedef basisu::vector uint8_vec; - typedef basisu::vector int16_vec; - typedef basisu::vector uint16_vec; - typedef basisu::vector uint_vec; - typedef basisu::vector uint64_vec; - typedef basisu::vector int_vec; - typedef basisu::vector bool_vec; - - void enable_debug_printf(bool enabled); - void debug_printf(const char *pFmt, ...); - - - template inline void clear_obj(T& obj) { memset(&obj, 0, sizeof(obj)); } - - template inline T0 lerp(T0 a, T0 b, T1 c) { return a + (b - a) * c; } - - template inline S maximum(S a, S b) { return (a > b) ? a : b; } - template inline S maximum(S a, S b, S c) { return maximum(maximum(a, b), c); } - template inline S maximum(S a, S b, S c, S d) { return maximum(maximum(maximum(a, b), c), d); } - - template inline S minimum(S a, S b) { return (a < b) ? a : b; } - template inline S minimum(S a, S b, S c) { return minimum(minimum(a, b), c); } - template inline S minimum(S a, S b, S c, S d) { return minimum(minimum(minimum(a, b), c), d); } - - inline float clampf(float value, float low, float high) { if (value < low) value = low; else if (value > high) value = high; return value; } - inline float saturate(float value) { return clampf(value, 0, 1.0f); } - inline uint8_t minimumub(uint8_t a, uint8_t b) { return (a < b) ? a : b; } - inline uint32_t minimumu(uint32_t a, uint32_t b) { return (a < b) ? a : b; } - inline int32_t minimumi(int32_t a, int32_t b) { return (a < b) ? a : b; } - inline float minimumf(float a, float b) { return (a < b) ? a : b; } - inline uint8_t maximumub(uint8_t a, uint8_t b) { return (a > b) ? a : b; } - inline uint32_t maximumu(uint32_t a, uint32_t b) { return (a > b) ? a : b; } - inline int32_t maximumi(int32_t a, int32_t b) { return (a > b) ? a : b; } - inline float maximumf(float a, float b) { return (a > b) ? a : b; } - inline int squarei(int i) { return i * i; } - inline float squaref(float i) { return i * i; } - template inline T square(T a) { return a * a; } - - template inline S clamp(S value, S low, S high) { return (value < low) ? low : ((value > high) ? high : value); } - - inline uint32_t iabs(int32_t i) { return (i < 0) ? static_cast(-i) : static_cast(i); } - inline uint64_t iabs64(int64_t i) { return (i < 0) ? static_cast(-i) : static_cast(i); } - - template inline void clear_vector(T &vec) { vec.erase(vec.begin(), vec.end()); } - template inline typename T::value_type *enlarge_vector(T &vec, size_t n) { size_t cs = vec.size(); vec.resize(cs + n); return &vec[cs]; } - - inline bool is_pow2(uint32_t x) { return x && ((x & (x - 1U)) == 0U); } - inline bool is_pow2(uint64_t x) { return x && ((x & (x - 1U)) == 0U); } - - template inline T open_range_check(T v, T minv, T maxv) { assert(v >= minv && v < maxv); BASISU_NOTE_UNUSED(minv); BASISU_NOTE_UNUSED(maxv); return v; } - template inline T open_range_check(T v, T maxv) { assert(v < maxv); BASISU_NOTE_UNUSED(maxv); return v; } - - inline uint32_t total_bits(uint32_t v) { uint32_t l = 0; for ( ; v > 0U; ++l) v >>= 1; return l; } - - template inline T saturate(T val) { return clamp(val, 0.0f, 1.0f); } - - template inline void append_vector(T &vec, const R *pObjs, size_t n) - { - if (n) - { - if (vec.size()) - { - assert((pObjs + n) <= vec.begin() || (pObjs >= vec.end())); - } - const size_t cur_s = vec.size(); - vec.resize(cur_s + n); - memcpy(&vec[cur_s], pObjs, sizeof(R) * n); - } - } - - template inline void append_vector(T &vec, const T &other_vec) - { - assert(&vec != &other_vec); - if (other_vec.size()) - append_vector(vec, &other_vec[0], other_vec.size()); - } - - template inline void vector_ensure_element_is_valid(T &vec, size_t idx) - { - if (idx >= vec.size()) - vec.resize(idx + 1); - } - - template inline void vector_sort(T &vec) - { - if (vec.size()) - std::sort(vec.begin(), vec.end()); - } - - template inline bool unordered_set_contains(T& set, const U&obj) - { - return set.find(obj) != set.end(); - } - - template int vector_find(const T &vec, const typename T::value_type &obj) - { - assert(vec.size() <= INT_MAX); - for (size_t i = 0; i < vec.size(); i++) - if (vec[i] == obj) - return static_cast(i); - return -1; - } - - template void vector_set_all(T &vec, const typename T::value_type &obj) - { - for (size_t i = 0; i < vec.size(); i++) - vec[i] = obj; - } - - inline uint64_t read_be64(const void *p) - { - uint64_t val = 0; - for (uint32_t i = 0; i < 8; i++) - val |= (static_cast(static_cast(p)[7 - i]) << (i * 8)); - return val; - } - - inline void write_be64(void *p, uint64_t x) - { - for (uint32_t i = 0; i < 8; i++) - static_cast(p)[7 - i] = static_cast(x >> (i * 8)); - } - - static inline uint16_t byteswap16(uint16_t x) { return static_cast((x << 8) | (x >> 8)); } - static inline uint32_t byteswap32(uint32_t x) { return ((x << 24) | ((x << 8) & 0x00FF0000) | ((x >> 8) & 0x0000FF00) | (x >> 24)); } - - inline uint32_t floor_log2i(uint32_t v) - { - uint32_t b = 0; - for (; v > 1U; ++b) - v >>= 1; - return b; - } - - inline uint32_t ceil_log2i(uint32_t v) - { - uint32_t b = floor_log2i(v); - if ((b != 32) && (v > (1U << b))) - ++b; - return b; - } - - inline int posmod(int x, int y) - { - if (x >= 0) - return (x < y) ? x : (x % y); - int m = (-x) % y; - return (m != 0) ? (y - m) : m; - } - - inline bool do_excl_ranges_overlap(int la, int ha, int lb, int hb) - { - assert(la < ha && lb < hb); - if ((ha <= lb) || (la >= hb)) return false; - return true; - } - - static inline uint32_t read_le_dword(const uint8_t *pBytes) - { - return (pBytes[3] << 24U) | (pBytes[2] << 16U) | (pBytes[1] << 8U) | (pBytes[0]); - } - - static inline void write_le_dword(uint8_t* pBytes, uint32_t val) - { - pBytes[0] = (uint8_t)val; - pBytes[1] = (uint8_t)(val >> 8U); - pBytes[2] = (uint8_t)(val >> 16U); - pBytes[3] = (uint8_t)(val >> 24U); - } - - // Always little endian 1-8 byte unsigned int - template - struct packed_uint - { - uint8_t m_bytes[NumBytes]; - - inline packed_uint() { static_assert(NumBytes <= sizeof(uint64_t), "Invalid NumBytes"); } - inline packed_uint(uint64_t v) { *this = v; } - inline packed_uint(const packed_uint& other) { *this = other; } - - inline packed_uint& operator= (uint64_t v) - { - for (uint32_t i = 0; i < NumBytes; i++) - m_bytes[i] = static_cast(v >> (i * 8)); - return *this; - } - - inline packed_uint& operator= (const packed_uint& rhs) - { - memcpy(m_bytes, rhs.m_bytes, sizeof(m_bytes)); - return *this; - } - - inline operator uint32_t() const - { - switch (NumBytes) - { - case 1: - { - return m_bytes[0]; - } - case 2: - { - return (m_bytes[1] << 8U) | m_bytes[0]; - } - case 3: - { - return (m_bytes[2] << 16U) | (m_bytes[1] << 8U) | m_bytes[0]; - } - case 4: - { - return read_le_dword(m_bytes); - } - case 5: - { - uint32_t l = read_le_dword(m_bytes); - uint32_t h = m_bytes[4]; - return static_cast(l) | (static_cast(h) << 32U); - } - case 6: - { - uint32_t l = read_le_dword(m_bytes); - uint32_t h = (m_bytes[5] << 8U) | m_bytes[4]; - return static_cast(l) | (static_cast(h) << 32U); - } - case 7: - { - uint32_t l = read_le_dword(m_bytes); - uint32_t h = (m_bytes[6] << 16U) | (m_bytes[5] << 8U) | m_bytes[4]; - return static_cast(l) | (static_cast(h) << 32U); - } - case 8: - { - uint32_t l = read_le_dword(m_bytes); - uint32_t h = read_le_dword(m_bytes + 4); - return static_cast(l) | (static_cast(h) << 32U); - } - default: - { - assert(0); - return 0; - } - } - } - }; - - enum eZero { cZero }; - enum eNoClamp { cNoClamp }; - - // Rice/Huffman entropy coding - - // This is basically Deflate-style canonical Huffman, except we allow for a lot more symbols. - enum - { - cHuffmanMaxSupportedCodeSize = 16, cHuffmanMaxSupportedInternalCodeSize = 31, - cHuffmanFastLookupBits = 10, - cHuffmanMaxSymsLog2 = 14, cHuffmanMaxSyms = 1 << cHuffmanMaxSymsLog2, - - // Small zero runs - cHuffmanSmallZeroRunSizeMin = 3, cHuffmanSmallZeroRunSizeMax = 10, cHuffmanSmallZeroRunExtraBits = 3, - - // Big zero run - cHuffmanBigZeroRunSizeMin = 11, cHuffmanBigZeroRunSizeMax = 138, cHuffmanBigZeroRunExtraBits = 7, - - // Small non-zero run - cHuffmanSmallRepeatSizeMin = 3, cHuffmanSmallRepeatSizeMax = 6, cHuffmanSmallRepeatExtraBits = 2, - - // Big non-zero run - cHuffmanBigRepeatSizeMin = 7, cHuffmanBigRepeatSizeMax = 134, cHuffmanBigRepeatExtraBits = 7, - - cHuffmanTotalCodelengthCodes = 21, cHuffmanSmallZeroRunCode = 17, cHuffmanBigZeroRunCode = 18, cHuffmanSmallRepeatCode = 19, cHuffmanBigRepeatCode = 20 - }; - - static const uint8_t g_huffman_sorted_codelength_codes[] = { cHuffmanSmallZeroRunCode, cHuffmanBigZeroRunCode, cHuffmanSmallRepeatCode, cHuffmanBigRepeatCode, 0, 8, 7, 9, 6, 0xA, 5, 0xB, 4, 0xC, 3, 0xD, 2, 0xE, 1, 0xF, 0x10 }; - const uint32_t cHuffmanTotalSortedCodelengthCodes = sizeof(g_huffman_sorted_codelength_codes) / sizeof(g_huffman_sorted_codelength_codes[0]); - - // GPU texture formats - - enum class texture_format - { - cInvalidTextureFormat = -1, - - // Block-based formats - cETC1, // ETC1 - cETC1S, // ETC1 (subset: diff colors only, no subblocks) - cETC2_RGB, // ETC2 color block (basisu doesn't support ETC2 planar/T/H modes - just basic ETC1) - cETC2_RGBA, // ETC2 EAC alpha block followed by ETC2 color block - cETC2_ALPHA, // ETC2 EAC alpha block - cBC1, // DXT1 - cBC3, // DXT5 (BC4/DXT5A block followed by a BC1/DXT1 block) - cBC4, // DXT5A - cBC5, // 3DC/DXN (two BC4/DXT5A blocks) - cBC7, - cASTC4x4, // LDR only - cPVRTC1_4_RGB, - cPVRTC1_4_RGBA, - cATC_RGB, - cATC_RGBA_INTERPOLATED_ALPHA, - cFXT1_RGB, - cPVRTC2_4_RGBA, - cETC2_R11_EAC, - cETC2_RG11_EAC, - cUASTC4x4, - cBC1_NV, - cBC1_AMD, - - // Uncompressed/raw pixels - cRGBA32, - cRGB565, - cBGR565, - cRGBA4444, - cABGR4444 - }; - - inline uint32_t get_bytes_per_block(texture_format fmt) - { - switch (fmt) - { - case texture_format::cETC1: - case texture_format::cETC1S: - case texture_format::cETC2_RGB: - case texture_format::cETC2_ALPHA: - case texture_format::cBC1: - case texture_format::cBC1_NV: - case texture_format::cBC1_AMD: - case texture_format::cBC4: - case texture_format::cPVRTC1_4_RGB: - case texture_format::cPVRTC1_4_RGBA: - case texture_format::cATC_RGB: - case texture_format::cPVRTC2_4_RGBA: - case texture_format::cETC2_R11_EAC: - return 8; - case texture_format::cRGBA32: - return sizeof(uint32_t) * 16; - default: - break; - } - return 16; - } - - inline uint32_t get_qwords_per_block(texture_format fmt) - { - return get_bytes_per_block(fmt) >> 3; - } - - inline uint32_t get_block_width(texture_format fmt) - { - BASISU_NOTE_UNUSED(fmt); - switch (fmt) - { - case texture_format::cFXT1_RGB: - return 8; - default: - break; - } - return 4; - } - - inline uint32_t get_block_height(texture_format fmt) - { - BASISU_NOTE_UNUSED(fmt); - return 4; - } - -} // namespace basisu - diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_containers.h b/WickedEngine/Utility/basis_universal/transcoder/basisu_containers.h deleted file mode 100644 index 67416ee71..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_containers.h +++ /dev/null @@ -1,1983 +0,0 @@ -// basisu_containers.h -#pragma once -#include -#include -#include -#include -#include - -#if defined(__linux__) && !defined(ANDROID) -// Only for malloc_usable_size() in basisu_containers_impl.h -#include -#define HAS_MALLOC_USABLE_SIZE 1 -#endif - -// Set to 1 to always check vector operator[], front(), and back() even in release. -#define BASISU_VECTOR_FORCE_CHECKING 0 - -// If 1, the vector container will not query the CRT to get the size of resized memory blocks. -#define BASISU_VECTOR_DETERMINISTIC 1 - -#ifdef _MSC_VER -#define BASISU_FORCE_INLINE __forceinline -#else -#define BASISU_FORCE_INLINE inline -#endif - -namespace basisu -{ - enum { cInvalidIndex = -1 }; - - namespace helpers - { - inline bool is_power_of_2(uint32_t x) { return x && ((x & (x - 1U)) == 0U); } - inline bool is_power_of_2(uint64_t x) { return x && ((x & (x - 1U)) == 0U); } - template const T& minimum(const T& a, const T& b) { return (b < a) ? b : a; } - template const T& maximum(const T& a, const T& b) { return (a < b) ? b : a; } - - inline uint32_t floor_log2i(uint32_t v) - { - uint32_t l = 0; - while (v > 1U) - { - v >>= 1; - l++; - } - return l; - } - - inline uint32_t next_pow2(uint32_t val) - { - val--; - val |= val >> 16; - val |= val >> 8; - val |= val >> 4; - val |= val >> 2; - val |= val >> 1; - return val + 1; - } - - inline uint64_t next_pow2(uint64_t val) - { - val--; - val |= val >> 32; - val |= val >> 16; - val |= val >> 8; - val |= val >> 4; - val |= val >> 2; - val |= val >> 1; - return val + 1; - } - } // namespace helpers - - template - inline T* construct(T* p) - { - return new (static_cast(p)) T; - } - - template - inline T* construct(T* p, const U& init) - { - return new (static_cast(p)) T(init); - } - - template - inline void construct_array(T* p, size_t n) - { - T* q = p + n; - for (; p != q; ++p) - new (static_cast(p)) T; - } - - template - inline void construct_array(T* p, size_t n, const U& init) - { - T* q = p + n; - for (; p != q; ++p) - new (static_cast(p)) T(init); - } - - template - inline void destruct(T* p) - { - (void)p; - p->~T(); - } - - template inline void destruct_array(T* p, size_t n) - { - T* q = p + n; - for (; p != q; ++p) - p->~T(); - } - - template struct int_traits { enum { cMin = INT32_MIN, cMax = INT32_MAX, cSigned = true }; }; - - template<> struct int_traits { enum { cMin = INT8_MIN, cMax = INT8_MAX, cSigned = true }; }; - template<> struct int_traits { enum { cMin = INT16_MIN, cMax = INT16_MAX, cSigned = true }; }; - template<> struct int_traits { enum { cMin = INT32_MIN, cMax = INT32_MAX, cSigned = true }; }; - - template<> struct int_traits { enum { cMin = 0, cMax = UINT8_MAX, cSigned = false }; }; - template<> struct int_traits { enum { cMin = 0, cMax = UINT16_MAX, cSigned = false }; }; - template<> struct int_traits { enum { cMin = 0, cMax = UINT32_MAX, cSigned = false }; }; - - template - struct scalar_type - { - enum { cFlag = false }; - static inline void construct(T* p) { basisu::construct(p); } - static inline void construct(T* p, const T& init) { basisu::construct(p, init); } - static inline void construct_array(T* p, size_t n) { basisu::construct_array(p, n); } - static inline void destruct(T* p) { basisu::destruct(p); } - static inline void destruct_array(T* p, size_t n) { basisu::destruct_array(p, n); } - }; - - template struct scalar_type - { - enum { cFlag = true }; - static inline void construct(T** p) { memset(p, 0, sizeof(T*)); } - static inline void construct(T** p, T* init) { *p = init; } - static inline void construct_array(T** p, size_t n) { memset(p, 0, sizeof(T*) * n); } - static inline void destruct(T** p) { p; } - static inline void destruct_array(T** p, size_t n) { p, n; } - }; - -#define BASISU_DEFINE_BUILT_IN_TYPE(X) \ - template<> struct scalar_type { \ - enum { cFlag = true }; \ - static inline void construct(X* p) { memset(p, 0, sizeof(X)); } \ - static inline void construct(X* p, const X& init) { memcpy(p, &init, sizeof(X)); } \ - static inline void construct_array(X* p, size_t n) { memset(p, 0, sizeof(X) * n); } \ - static inline void destruct(X* p) { p; } \ - static inline void destruct_array(X* p, size_t n) { p, n; } }; - - BASISU_DEFINE_BUILT_IN_TYPE(bool) - BASISU_DEFINE_BUILT_IN_TYPE(char) - BASISU_DEFINE_BUILT_IN_TYPE(unsigned char) - BASISU_DEFINE_BUILT_IN_TYPE(short) - BASISU_DEFINE_BUILT_IN_TYPE(unsigned short) - BASISU_DEFINE_BUILT_IN_TYPE(int) - BASISU_DEFINE_BUILT_IN_TYPE(unsigned int) - BASISU_DEFINE_BUILT_IN_TYPE(long) - BASISU_DEFINE_BUILT_IN_TYPE(unsigned long) -#ifdef __GNUC__ - BASISU_DEFINE_BUILT_IN_TYPE(long long) - BASISU_DEFINE_BUILT_IN_TYPE(unsigned long long) -#else - BASISU_DEFINE_BUILT_IN_TYPE(__int64) - BASISU_DEFINE_BUILT_IN_TYPE(unsigned __int64) -#endif - BASISU_DEFINE_BUILT_IN_TYPE(float) - BASISU_DEFINE_BUILT_IN_TYPE(double) - BASISU_DEFINE_BUILT_IN_TYPE(long double) - -#undef BASISU_DEFINE_BUILT_IN_TYPE - - template - struct bitwise_movable { enum { cFlag = false }; }; - -#define BASISU_DEFINE_BITWISE_MOVABLE(Q) template<> struct bitwise_movable { enum { cFlag = true }; }; - - template - struct bitwise_copyable { enum { cFlag = false }; }; - -#define BASISU_DEFINE_BITWISE_COPYABLE(Q) template<> struct bitwise_copyable { enum { cFlag = true }; }; - -#define BASISU_IS_POD(T) __is_pod(T) - -#define BASISU_IS_SCALAR_TYPE(T) (scalar_type::cFlag) - -#if !defined(BASISU_HAVE_STD_TRIVIALLY_COPYABLE) && defined(__GNUC__) && __GNUC__<5 - #define BASISU_IS_TRIVIALLY_COPYABLE(...) __has_trivial_copy(__VA_ARGS__) -#else - #define BASISU_IS_TRIVIALLY_COPYABLE(...) std::is_trivially_copyable<__VA_ARGS__>::value -#endif - -// TODO: clean this up -#define BASISU_IS_BITWISE_COPYABLE(T) (BASISU_IS_SCALAR_TYPE(T) || BASISU_IS_POD(T) || BASISU_IS_TRIVIALLY_COPYABLE(T) || (bitwise_copyable::cFlag)) - -#define BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(T) (BASISU_IS_BITWISE_COPYABLE(T) || (bitwise_movable::cFlag)) - -#define BASISU_HAS_DESTRUCTOR(T) ((!scalar_type::cFlag) && (!__is_pod(T))) - - typedef char(&yes_t)[1]; - typedef char(&no_t)[2]; - - template yes_t class_test(int U::*); - template no_t class_test(...); - - template struct is_class - { - enum { value = (sizeof(class_test(0)) == sizeof(yes_t)) }; - }; - - template struct is_pointer - { - enum { value = false }; - }; - - template struct is_pointer - { - enum { value = true }; - }; - - struct empty_type { }; - - BASISU_DEFINE_BITWISE_COPYABLE(empty_type); - BASISU_DEFINE_BITWISE_MOVABLE(empty_type); - - template struct rel_ops - { - friend bool operator!=(const T& x, const T& y) { return (!(x == y)); } - friend bool operator> (const T& x, const T& y) { return (y < x); } - friend bool operator<=(const T& x, const T& y) { return (!(y < x)); } - friend bool operator>=(const T& x, const T& y) { return (!(x < y)); } - }; - - struct elemental_vector - { - void* m_p; - uint32_t m_size; - uint32_t m_capacity; - - typedef void (*object_mover)(void* pDst, void* pSrc, uint32_t num); - - bool increase_capacity(uint32_t min_new_capacity, bool grow_hint, uint32_t element_size, object_mover pRelocate, bool nofail); - }; - - template - class vector : public rel_ops< vector > - { - public: - typedef T* iterator; - typedef const T* const_iterator; - typedef T value_type; - typedef T& reference; - typedef const T& const_reference; - typedef T* pointer; - typedef const T* const_pointer; - - inline vector() : - m_p(NULL), - m_size(0), - m_capacity(0) - { - } - - inline vector(uint32_t n, const T& init) : - m_p(NULL), - m_size(0), - m_capacity(0) - { - increase_capacity(n, false); - construct_array(m_p, n, init); - m_size = n; - } - - inline vector(const vector& other) : - m_p(NULL), - m_size(0), - m_capacity(0) - { - increase_capacity(other.m_size, false); - - m_size = other.m_size; - - if (BASISU_IS_BITWISE_COPYABLE(T)) - { - if ((m_p) && (other.m_p)) - memcpy(m_p, other.m_p, m_size * sizeof(T)); - } - else - { - T* pDst = m_p; - const T* pSrc = other.m_p; - for (uint32_t i = m_size; i > 0; i--) - construct(pDst++, *pSrc++); - } - } - - inline explicit vector(size_t size) : - m_p(NULL), - m_size(0), - m_capacity(0) - { - resize(size); - } - - inline ~vector() - { - if (m_p) - { - scalar_type::destruct_array(m_p, m_size); - free(m_p); - } - } - - inline vector& operator= (const vector& other) - { - if (this == &other) - return *this; - - if (m_capacity >= other.m_size) - resize(0); - else - { - clear(); - increase_capacity(other.m_size, false); - } - - if (BASISU_IS_BITWISE_COPYABLE(T)) - { - if ((m_p) && (other.m_p)) - memcpy(m_p, other.m_p, other.m_size * sizeof(T)); - } - else - { - T* pDst = m_p; - const T* pSrc = other.m_p; - for (uint32_t i = other.m_size; i > 0; i--) - construct(pDst++, *pSrc++); - } - - m_size = other.m_size; - - return *this; - } - - BASISU_FORCE_INLINE const T* begin() const { return m_p; } - BASISU_FORCE_INLINE T* begin() { return m_p; } - - BASISU_FORCE_INLINE const T* end() const { return m_p + m_size; } - BASISU_FORCE_INLINE T* end() { return m_p + m_size; } - - BASISU_FORCE_INLINE bool empty() const { return !m_size; } - BASISU_FORCE_INLINE uint32_t size() const { return m_size; } - BASISU_FORCE_INLINE uint32_t size_in_bytes() const { return m_size * sizeof(T); } - BASISU_FORCE_INLINE uint32_t capacity() const { return m_capacity; } - - // operator[] will assert on out of range indices, but in final builds there is (and will never be) any range checking on this method. - //BASISU_FORCE_INLINE const T& operator[] (uint32_t i) const { assert(i < m_size); return m_p[i]; } - //BASISU_FORCE_INLINE T& operator[] (uint32_t i) { assert(i < m_size); return m_p[i]; } - -#if !BASISU_VECTOR_FORCE_CHECKING - BASISU_FORCE_INLINE const T& operator[] (size_t i) const { assert(i < m_size); return m_p[i]; } - BASISU_FORCE_INLINE T& operator[] (size_t i) { assert(i < m_size); return m_p[i]; } -#else - BASISU_FORCE_INLINE const T& operator[] (size_t i) const - { - if (i >= m_size) - { - fprintf(stderr, "operator[] invalid index: %u, max entries %u, type size %u\n", (uint32_t)i, m_size, (uint32_t)sizeof(T)); - abort(); - } - return m_p[i]; - } - BASISU_FORCE_INLINE T& operator[] (size_t i) - { - if (i >= m_size) - { - fprintf(stderr, "operator[] invalid index: %u, max entries %u, type size %u\n", (uint32_t)i, m_size, (uint32_t)sizeof(T)); - abort(); - } - return m_p[i]; - } -#endif - - // at() always includes range checking, even in final builds, unlike operator []. - // The first element is returned if the index is out of range. - BASISU_FORCE_INLINE const T& at(size_t i) const { assert(i < m_size); return (i >= m_size) ? m_p[0] : m_p[i]; } - BASISU_FORCE_INLINE T& at(size_t i) { assert(i < m_size); return (i >= m_size) ? m_p[0] : m_p[i]; } - -#if !BASISU_VECTOR_FORCE_CHECKING - BASISU_FORCE_INLINE const T& front() const { assert(m_size); return m_p[0]; } - BASISU_FORCE_INLINE T& front() { assert(m_size); return m_p[0]; } - - BASISU_FORCE_INLINE const T& back() const { assert(m_size); return m_p[m_size - 1]; } - BASISU_FORCE_INLINE T& back() { assert(m_size); return m_p[m_size - 1]; } -#else - BASISU_FORCE_INLINE const T& front() const - { - if (!m_size) - { - fprintf(stderr, "front: vector is empty, type size %u\n", (uint32_t)sizeof(T)); - abort(); - } - return m_p[0]; - } - BASISU_FORCE_INLINE T& front() - { - if (!m_size) - { - fprintf(stderr, "front: vector is empty, type size %u\n", (uint32_t)sizeof(T)); - abort(); - } - return m_p[0]; - } - - BASISU_FORCE_INLINE const T& back() const - { - if(!m_size) - { - fprintf(stderr, "back: vector is empty, type size %u\n", (uint32_t)sizeof(T)); - abort(); - } - return m_p[m_size - 1]; - } - BASISU_FORCE_INLINE T& back() - { - if (!m_size) - { - fprintf(stderr, "back: vector is empty, type size %u\n", (uint32_t)sizeof(T)); - abort(); - } - return m_p[m_size - 1]; - } -#endif - - BASISU_FORCE_INLINE const T* get_ptr() const { return m_p; } - BASISU_FORCE_INLINE T* get_ptr() { return m_p; } - - BASISU_FORCE_INLINE const T* data() const { return m_p; } - BASISU_FORCE_INLINE T* data() { return m_p; } - - // clear() sets the container to empty, then frees the allocated block. - inline void clear() - { - if (m_p) - { - scalar_type::destruct_array(m_p, m_size); - free(m_p); - m_p = NULL; - m_size = 0; - m_capacity = 0; - } - } - - inline void clear_no_destruction() - { - if (m_p) - { - free(m_p); - m_p = NULL; - m_size = 0; - m_capacity = 0; - } - } - - inline void reserve(size_t new_capacity_size_t) - { - if (new_capacity_size_t > UINT32_MAX) - { - assert(0); - return; - } - - uint32_t new_capacity = (uint32_t)new_capacity_size_t; - - if (new_capacity > m_capacity) - increase_capacity(new_capacity, false); - else if (new_capacity < m_capacity) - { - // Must work around the lack of a "decrease_capacity()" method. - // This case is rare enough in practice that it's probably not worth implementing an optimized in-place resize. - vector tmp; - tmp.increase_capacity(helpers::maximum(m_size, new_capacity), false); - tmp = *this; - swap(tmp); - } - } - - inline bool try_reserve(size_t new_capacity_size_t) - { - if (new_capacity_size_t > UINT32_MAX) - { - assert(0); - return false; - } - - uint32_t new_capacity = (uint32_t)new_capacity_size_t; - - if (new_capacity > m_capacity) - { - if (!increase_capacity(new_capacity, false)) - return false; - } - else if (new_capacity < m_capacity) - { - // Must work around the lack of a "decrease_capacity()" method. - // This case is rare enough in practice that it's probably not worth implementing an optimized in-place resize. - vector tmp; - tmp.increase_capacity(helpers::maximum(m_size, new_capacity), false); - tmp = *this; - swap(tmp); - } - - return true; - } - - // resize(0) sets the container to empty, but does not free the allocated block. - inline void resize(size_t new_size_size_t, bool grow_hint = false) - { - if (new_size_size_t > UINT32_MAX) - { - assert(0); - return; - } - - uint32_t new_size = (uint32_t)new_size_size_t; - - if (m_size != new_size) - { - if (new_size < m_size) - scalar_type::destruct_array(m_p + new_size, m_size - new_size); - else - { - if (new_size > m_capacity) - increase_capacity(new_size, (new_size == (m_size + 1)) || grow_hint); - - scalar_type::construct_array(m_p + m_size, new_size - m_size); - } - - m_size = new_size; - } - } - - inline bool try_resize(size_t new_size_size_t, bool grow_hint = false) - { - if (new_size_size_t > UINT32_MAX) - { - assert(0); - return false; - } - - uint32_t new_size = (uint32_t)new_size_size_t; - - if (m_size != new_size) - { - if (new_size < m_size) - scalar_type::destruct_array(m_p + new_size, m_size - new_size); - else - { - if (new_size > m_capacity) - { - if (!increase_capacity(new_size, (new_size == (m_size + 1)) || grow_hint, true)) - return false; - } - - scalar_type::construct_array(m_p + m_size, new_size - m_size); - } - - m_size = new_size; - } - - return true; - } - - // If size >= capacity/2, reset() sets the container's size to 0 but doesn't free the allocated block (because the container may be similarly loaded in the future). - // Otherwise it blows away the allocated block. See http://www.codercorner.com/blog/?p=494 - inline void reset() - { - if (m_size >= (m_capacity >> 1)) - resize(0); - else - clear(); - } - - inline T* enlarge(uint32_t i) - { - uint32_t cur_size = m_size; - resize(cur_size + i, true); - return get_ptr() + cur_size; - } - - inline T* try_enlarge(uint32_t i) - { - uint32_t cur_size = m_size; - if (!try_resize(cur_size + i, true)) - return NULL; - return get_ptr() + cur_size; - } - - BASISU_FORCE_INLINE void push_back(const T& obj) - { - assert(!m_p || (&obj < m_p) || (&obj >= (m_p + m_size))); - - if (m_size >= m_capacity) - increase_capacity(m_size + 1, true); - - scalar_type::construct(m_p + m_size, obj); - m_size++; - } - - inline bool try_push_back(const T& obj) - { - assert(!m_p || (&obj < m_p) || (&obj >= (m_p + m_size))); - - if (m_size >= m_capacity) - { - if (!increase_capacity(m_size + 1, true, true)) - return false; - } - - scalar_type::construct(m_p + m_size, obj); - m_size++; - - return true; - } - - inline void push_back_value(T obj) - { - if (m_size >= m_capacity) - increase_capacity(m_size + 1, true); - - scalar_type::construct(m_p + m_size, obj); - m_size++; - } - - inline void pop_back() - { - assert(m_size); - - if (m_size) - { - m_size--; - scalar_type::destruct(&m_p[m_size]); - } - } - - inline void insert(uint32_t index, const T* p, uint32_t n) - { - assert(index <= m_size); - if (!n) - return; - - const uint32_t orig_size = m_size; - resize(m_size + n, true); - - const uint32_t num_to_move = orig_size - index; - - if (BASISU_IS_BITWISE_COPYABLE(T)) - { - // This overwrites the destination object bits, but bitwise copyable means we don't need to worry about destruction. - memmove(m_p + index + n, m_p + index, sizeof(T) * num_to_move); - } - else - { - const T* pSrc = m_p + orig_size - 1; - T* pDst = const_cast(pSrc) + n; - - for (uint32_t i = 0; i < num_to_move; i++) - { - assert((pDst - m_p) < (int)m_size); - *pDst-- = *pSrc--; - } - } - - T* pDst = m_p + index; - - if (BASISU_IS_BITWISE_COPYABLE(T)) - { - // This copies in the new bits, overwriting the existing objects, which is OK for copyable types that don't need destruction. - memcpy(pDst, p, sizeof(T) * n); - } - else - { - for (uint32_t i = 0; i < n; i++) - { - assert((pDst - m_p) < (int)m_size); - *pDst++ = *p++; - } - } - } - - inline void insert(T* p, const T& obj) - { - int64_t ofs = p - begin(); - if ((ofs < 0) || (ofs > UINT32_MAX)) - { - assert(0); - return; - } - - insert((uint32_t)ofs, &obj, 1); - } - - // push_front() isn't going to be very fast - it's only here for usability. - inline void push_front(const T& obj) - { - insert(0, &obj, 1); - } - - vector& append(const vector& other) - { - if (other.m_size) - insert(m_size, &other[0], other.m_size); - return *this; - } - - vector& append(const T* p, uint32_t n) - { - if (n) - insert(m_size, p, n); - return *this; - } - - inline void erase(uint32_t start, uint32_t n) - { - assert((start + n) <= m_size); - if ((start + n) > m_size) - return; - - if (!n) - return; - - const uint32_t num_to_move = m_size - (start + n); - - T* pDst = m_p + start; - - const T* pSrc = m_p + start + n; - - if (BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(T)) - { - // This test is overly cautious. - if ((!BASISU_IS_BITWISE_COPYABLE(T)) || (BASISU_HAS_DESTRUCTOR(T))) - { - // Type has been marked explictly as bitwise movable, which means we can move them around but they may need to be destructed. - // First destroy the erased objects. - scalar_type::destruct_array(pDst, n); - } - - // Copy "down" the objects to preserve, filling in the empty slots. - memmove(pDst, pSrc, num_to_move * sizeof(T)); - } - else - { - // Type is not bitwise copyable or movable. - // Move them down one at a time by using the equals operator, and destroying anything that's left over at the end. - T* pDst_end = pDst + num_to_move; - while (pDst != pDst_end) - *pDst++ = *pSrc++; - - scalar_type::destruct_array(pDst_end, n); - } - - m_size -= n; - } - - inline void erase(uint32_t index) - { - erase(index, 1); - } - - inline void erase(T* p) - { - assert((p >= m_p) && (p < (m_p + m_size))); - erase(static_cast(p - m_p)); - } - - inline void erase(T *pFirst, T *pEnd) - { - assert(pFirst <= pEnd); - assert(pFirst >= begin() && pFirst <= end()); - assert(pEnd >= begin() && pEnd <= end()); - - int64_t ofs = pFirst - begin(); - if ((ofs < 0) || (ofs > UINT32_MAX)) - { - assert(0); - return; - } - - int64_t n = pEnd - pFirst; - if ((n < 0) || (n > UINT32_MAX)) - { - assert(0); - return; - } - - erase((uint32_t)ofs, (uint32_t)n); - } - - void erase_unordered(uint32_t index) - { - assert(index < m_size); - - if ((index + 1) < m_size) - (*this)[index] = back(); - - pop_back(); - } - - inline bool operator== (const vector& rhs) const - { - if (m_size != rhs.m_size) - return false; - else if (m_size) - { - if (scalar_type::cFlag) - return memcmp(m_p, rhs.m_p, sizeof(T) * m_size) == 0; - else - { - const T* pSrc = m_p; - const T* pDst = rhs.m_p; - for (uint32_t i = m_size; i; i--) - if (!(*pSrc++ == *pDst++)) - return false; - } - } - - return true; - } - - inline bool operator< (const vector& rhs) const - { - const uint32_t min_size = helpers::minimum(m_size, rhs.m_size); - - const T* pSrc = m_p; - const T* pSrc_end = m_p + min_size; - const T* pDst = rhs.m_p; - - while ((pSrc < pSrc_end) && (*pSrc == *pDst)) - { - pSrc++; - pDst++; - } - - if (pSrc < pSrc_end) - return *pSrc < *pDst; - - return m_size < rhs.m_size; - } - - inline void swap(vector& other) - { - std::swap(m_p, other.m_p); - std::swap(m_size, other.m_size); - std::swap(m_capacity, other.m_capacity); - } - - inline void sort() - { - std::sort(begin(), end()); - } - - inline void unique() - { - if (!empty()) - { - sort(); - - resize(std::unique(begin(), end()) - begin()); - } - } - - inline void reverse() - { - uint32_t j = m_size >> 1; - for (uint32_t i = 0; i < j; i++) - std::swap(m_p[i], m_p[m_size - 1 - i]); - } - - inline int find(const T& key) const - { - const T* p = m_p; - const T* p_end = m_p + m_size; - - uint32_t index = 0; - - while (p != p_end) - { - if (key == *p) - return index; - - p++; - index++; - } - - return cInvalidIndex; - } - - inline int find_sorted(const T& key) const - { - if (m_size) - { - // Uniform binary search - Knuth Algorithm 6.2.1 U, unrolled twice. - int i = ((m_size + 1) >> 1) - 1; - int m = m_size; - - for (; ; ) - { - assert(i >= 0 && i < (int)m_size); - const T* pKey_i = m_p + i; - int cmp = key < *pKey_i; -#if defined(_DEBUG) || defined(DEBUG) - int cmp2 = *pKey_i < key; - assert((cmp != cmp2) || (key == *pKey_i)); -#endif - if ((!cmp) && (key == *pKey_i)) return i; - m >>= 1; - if (!m) break; - cmp = -cmp; - i += (((m + 1) >> 1) ^ cmp) - cmp; - if (i < 0) - break; - - assert(i >= 0 && i < (int)m_size); - pKey_i = m_p + i; - cmp = key < *pKey_i; -#if defined(_DEBUG) || defined(DEBUG) - cmp2 = *pKey_i < key; - assert((cmp != cmp2) || (key == *pKey_i)); -#endif - if ((!cmp) && (key == *pKey_i)) return i; - m >>= 1; - if (!m) break; - cmp = -cmp; - i += (((m + 1) >> 1) ^ cmp) - cmp; - if (i < 0) - break; - } - } - - return cInvalidIndex; - } - - template - inline int find_sorted(const T& key, Q less_than) const - { - if (m_size) - { - // Uniform binary search - Knuth Algorithm 6.2.1 U, unrolled twice. - int i = ((m_size + 1) >> 1) - 1; - int m = m_size; - - for (; ; ) - { - assert(i >= 0 && i < (int)m_size); - const T* pKey_i = m_p + i; - int cmp = less_than(key, *pKey_i); - if ((!cmp) && (!less_than(*pKey_i, key))) return i; - m >>= 1; - if (!m) break; - cmp = -cmp; - i += (((m + 1) >> 1) ^ cmp) - cmp; - if (i < 0) - break; - - assert(i >= 0 && i < (int)m_size); - pKey_i = m_p + i; - cmp = less_than(key, *pKey_i); - if ((!cmp) && (!less_than(*pKey_i, key))) return i; - m >>= 1; - if (!m) break; - cmp = -cmp; - i += (((m + 1) >> 1) ^ cmp) - cmp; - if (i < 0) - break; - } - } - - return cInvalidIndex; - } - - inline uint32_t count_occurences(const T& key) const - { - uint32_t c = 0; - - const T* p = m_p; - const T* p_end = m_p + m_size; - - while (p != p_end) - { - if (key == *p) - c++; - - p++; - } - - return c; - } - - inline void set_all(const T& o) - { - if ((sizeof(T) == 1) && (scalar_type::cFlag)) - memset(m_p, *reinterpret_cast(&o), m_size); - else - { - T* pDst = m_p; - T* pDst_end = pDst + m_size; - while (pDst != pDst_end) - *pDst++ = o; - } - } - - // Caller assumes ownership of the heap block associated with the container. Container is cleared. - inline void* assume_ownership() - { - T* p = m_p; - m_p = NULL; - m_size = 0; - m_capacity = 0; - return p; - } - - // Caller is granting ownership of the indicated heap block. - // Block must have size constructed elements, and have enough room for capacity elements. - // The block must have been allocated using malloc(). - // Important: This method is used in Basis Universal. If you change how this container allocates memory, you'll need to change any users of this method. - inline bool grant_ownership(T* p, uint32_t size, uint32_t capacity) - { - // To to prevent the caller from obviously shooting themselves in the foot. - if (((p + capacity) > m_p) && (p < (m_p + m_capacity))) - { - // Can grant ownership of a block inside the container itself! - assert(0); - return false; - } - - if (size > capacity) - { - assert(0); - return false; - } - - if (!p) - { - if (capacity) - { - assert(0); - return false; - } - } - else if (!capacity) - { - assert(0); - return false; - } - - clear(); - m_p = p; - m_size = size; - m_capacity = capacity; - return true; - } - - private: - T* m_p; - uint32_t m_size; - uint32_t m_capacity; - - template struct is_vector { enum { cFlag = false }; }; - template struct is_vector< vector > { enum { cFlag = true }; }; - - static void object_mover(void* pDst_void, void* pSrc_void, uint32_t num) - { - T* pSrc = static_cast(pSrc_void); - T* const pSrc_end = pSrc + num; - T* pDst = static_cast(pDst_void); - - while (pSrc != pSrc_end) - { - // placement new - new (static_cast(pDst)) T(*pSrc); - pSrc->~T(); - ++pSrc; - ++pDst; - } - } - - inline bool increase_capacity(uint32_t min_new_capacity, bool grow_hint, bool nofail = false) - { - return reinterpret_cast(this)->increase_capacity( - min_new_capacity, grow_hint, sizeof(T), - (BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(T) || (is_vector::cFlag)) ? NULL : object_mover, nofail); - } - }; - - template struct bitwise_movable< vector > { enum { cFlag = true }; }; - - // Hash map - - template - struct hasher - { - inline size_t operator() (const T& key) const { return static_cast(key); } - }; - - template - struct equal_to - { - inline bool operator()(const T& a, const T& b) const { return a == b; } - }; - - // Important: The Hasher and Equals objects must be bitwise movable! - template, typename Equals = equal_to > - class hash_map - { - public: - class iterator; - class const_iterator; - - private: - friend class iterator; - friend class const_iterator; - - enum state - { - cStateInvalid = 0, - cStateValid = 1 - }; - - enum - { - cMinHashSize = 4U - }; - - public: - typedef hash_map hash_map_type; - typedef std::pair value_type; - typedef Key key_type; - typedef Value referent_type; - typedef Hasher hasher_type; - typedef Equals equals_type; - - hash_map() : - m_hash_shift(32), m_num_valid(0), m_grow_threshold(0) - { - } - - hash_map(const hash_map& other) : - m_values(other.m_values), - m_hash_shift(other.m_hash_shift), - m_hasher(other.m_hasher), - m_equals(other.m_equals), - m_num_valid(other.m_num_valid), - m_grow_threshold(other.m_grow_threshold) - { - } - - hash_map& operator= (const hash_map& other) - { - if (this == &other) - return *this; - - clear(); - - m_values = other.m_values; - m_hash_shift = other.m_hash_shift; - m_num_valid = other.m_num_valid; - m_grow_threshold = other.m_grow_threshold; - m_hasher = other.m_hasher; - m_equals = other.m_equals; - - return *this; - } - - inline ~hash_map() - { - clear(); - } - - const Equals& get_equals() const { return m_equals; } - Equals& get_equals() { return m_equals; } - - void set_equals(const Equals& equals) { m_equals = equals; } - - const Hasher& get_hasher() const { return m_hasher; } - Hasher& get_hasher() { return m_hasher; } - - void set_hasher(const Hasher& hasher) { m_hasher = hasher; } - - inline void clear() - { - if (!m_values.empty()) - { - if (BASISU_HAS_DESTRUCTOR(Key) || BASISU_HAS_DESTRUCTOR(Value)) - { - node* p = &get_node(0); - node* p_end = p + m_values.size(); - - uint32_t num_remaining = m_num_valid; - while (p != p_end) - { - if (p->state) - { - destruct_value_type(p); - num_remaining--; - if (!num_remaining) - break; - } - - p++; - } - } - - m_values.clear_no_destruction(); - - m_hash_shift = 32; - m_num_valid = 0; - m_grow_threshold = 0; - } - } - - inline void reset() - { - if (!m_num_valid) - return; - - if (BASISU_HAS_DESTRUCTOR(Key) || BASISU_HAS_DESTRUCTOR(Value)) - { - node* p = &get_node(0); - node* p_end = p + m_values.size(); - - uint32_t num_remaining = m_num_valid; - while (p != p_end) - { - if (p->state) - { - destruct_value_type(p); - p->state = cStateInvalid; - - num_remaining--; - if (!num_remaining) - break; - } - - p++; - } - } - else if (sizeof(node) <= 32) - { - memset(&m_values[0], 0, m_values.size_in_bytes()); - } - else - { - node* p = &get_node(0); - node* p_end = p + m_values.size(); - - uint32_t num_remaining = m_num_valid; - while (p != p_end) - { - if (p->state) - { - p->state = cStateInvalid; - - num_remaining--; - if (!num_remaining) - break; - } - - p++; - } - } - - m_num_valid = 0; - } - - inline uint32_t size() - { - return m_num_valid; - } - - inline uint32_t get_table_size() - { - return m_values.size(); - } - - inline bool empty() - { - return !m_num_valid; - } - - inline void reserve(uint32_t new_capacity) - { - uint64_t new_hash_size = helpers::maximum(1U, new_capacity); - - new_hash_size = new_hash_size * 2ULL; - - if (!helpers::is_power_of_2(new_hash_size)) - new_hash_size = helpers::next_pow2(new_hash_size); - - new_hash_size = helpers::maximum(cMinHashSize, new_hash_size); - - new_hash_size = helpers::minimum(0x80000000UL, new_hash_size); - - if (new_hash_size > m_values.size()) - rehash((uint32_t)new_hash_size); - } - - class iterator - { - friend class hash_map; - friend class hash_map::const_iterator; - - public: - inline iterator() : m_pTable(NULL), m_index(0) { } - inline iterator(hash_map_type& table, uint32_t index) : m_pTable(&table), m_index(index) { } - inline iterator(const iterator& other) : m_pTable(other.m_pTable), m_index(other.m_index) { } - - inline iterator& operator= (const iterator& other) - { - m_pTable = other.m_pTable; - m_index = other.m_index; - return *this; - } - - // post-increment - inline iterator operator++(int) - { - iterator result(*this); - ++*this; - return result; - } - - // pre-increment - inline iterator& operator++() - { - probe(); - return *this; - } - - inline value_type& operator*() const { return *get_cur(); } - inline value_type* operator->() const { return get_cur(); } - - inline bool operator == (const iterator& b) const { return (m_pTable == b.m_pTable) && (m_index == b.m_index); } - inline bool operator != (const iterator& b) const { return !(*this == b); } - inline bool operator == (const const_iterator& b) const { return (m_pTable == b.m_pTable) && (m_index == b.m_index); } - inline bool operator != (const const_iterator& b) const { return !(*this == b); } - - private: - hash_map_type* m_pTable; - uint32_t m_index; - - inline value_type* get_cur() const - { - assert(m_pTable && (m_index < m_pTable->m_values.size())); - assert(m_pTable->get_node_state(m_index) == cStateValid); - - return &m_pTable->get_node(m_index); - } - - inline void probe() - { - assert(m_pTable); - m_index = m_pTable->find_next(m_index); - } - }; - - class const_iterator - { - friend class hash_map; - friend class hash_map::iterator; - - public: - inline const_iterator() : m_pTable(NULL), m_index(0) { } - inline const_iterator(const hash_map_type& table, uint32_t index) : m_pTable(&table), m_index(index) { } - inline const_iterator(const iterator& other) : m_pTable(other.m_pTable), m_index(other.m_index) { } - inline const_iterator(const const_iterator& other) : m_pTable(other.m_pTable), m_index(other.m_index) { } - - inline const_iterator& operator= (const const_iterator& other) - { - m_pTable = other.m_pTable; - m_index = other.m_index; - return *this; - } - - inline const_iterator& operator= (const iterator& other) - { - m_pTable = other.m_pTable; - m_index = other.m_index; - return *this; - } - - // post-increment - inline const_iterator operator++(int) - { - const_iterator result(*this); - ++*this; - return result; - } - - // pre-increment - inline const_iterator& operator++() - { - probe(); - return *this; - } - - inline const value_type& operator*() const { return *get_cur(); } - inline const value_type* operator->() const { return get_cur(); } - - inline bool operator == (const const_iterator& b) const { return (m_pTable == b.m_pTable) && (m_index == b.m_index); } - inline bool operator != (const const_iterator& b) const { return !(*this == b); } - inline bool operator == (const iterator& b) const { return (m_pTable == b.m_pTable) && (m_index == b.m_index); } - inline bool operator != (const iterator& b) const { return !(*this == b); } - - private: - const hash_map_type* m_pTable; - uint32_t m_index; - - inline const value_type* get_cur() const - { - assert(m_pTable && (m_index < m_pTable->m_values.size())); - assert(m_pTable->get_node_state(m_index) == cStateValid); - - return &m_pTable->get_node(m_index); - } - - inline void probe() - { - assert(m_pTable); - m_index = m_pTable->find_next(m_index); - } - }; - - inline const_iterator begin() const - { - if (!m_num_valid) - return end(); - - return const_iterator(*this, find_next(UINT32_MAX)); - } - - inline const_iterator end() const - { - return const_iterator(*this, m_values.size()); - } - - inline iterator begin() - { - if (!m_num_valid) - return end(); - - return iterator(*this, find_next(UINT32_MAX)); - } - - inline iterator end() - { - return iterator(*this, m_values.size()); - } - - // insert_result.first will always point to inserted key/value (or the already existing key/value). - // insert_resutt.second will be true if a new key/value was inserted, or false if the key already existed (in which case first will point to the already existing value). - typedef std::pair insert_result; - - inline insert_result insert(const Key& k, const Value& v = Value()) - { - insert_result result; - if (!insert_no_grow(result, k, v)) - { - grow(); - - // This must succeed. - if (!insert_no_grow(result, k, v)) - { - fprintf(stderr, "insert() failed"); - abort(); - } - } - - return result; - } - - inline insert_result insert(const value_type& v) - { - return insert(v.first, v.second); - } - - inline const_iterator find(const Key& k) const - { - return const_iterator(*this, find_index(k)); - } - - inline iterator find(const Key& k) - { - return iterator(*this, find_index(k)); - } - - inline bool erase(const Key& k) - { - uint32_t i = find_index(k); - - if (i >= m_values.size()) - return false; - - node* pDst = &get_node(i); - destruct_value_type(pDst); - pDst->state = cStateInvalid; - - m_num_valid--; - - for (; ; ) - { - uint32_t r, j = i; - - node* pSrc = pDst; - - do - { - if (!i) - { - i = m_values.size() - 1; - pSrc = &get_node(i); - } - else - { - i--; - pSrc--; - } - - if (!pSrc->state) - return true; - - r = hash_key(pSrc->first); - - } while ((i <= r && r < j) || (r < j && j < i) || (j < i && i <= r)); - - move_node(pDst, pSrc); - - pDst = pSrc; - } - } - - inline void swap(hash_map_type& other) - { - m_values.swap(other.m_values); - std::swap(m_hash_shift, other.m_hash_shift); - std::swap(m_num_valid, other.m_num_valid); - std::swap(m_grow_threshold, other.m_grow_threshold); - std::swap(m_hasher, other.m_hasher); - std::swap(m_equals, other.m_equals); - } - - private: - struct node : public value_type - { - uint8_t state; - }; - - static inline void construct_value_type(value_type* pDst, const Key& k, const Value& v) - { - if (BASISU_IS_BITWISE_COPYABLE(Key)) - memcpy(&pDst->first, &k, sizeof(Key)); - else - scalar_type::construct(&pDst->first, k); - - if (BASISU_IS_BITWISE_COPYABLE(Value)) - memcpy(&pDst->second, &v, sizeof(Value)); - else - scalar_type::construct(&pDst->second, v); - } - - static inline void construct_value_type(value_type* pDst, const value_type* pSrc) - { - if ((BASISU_IS_BITWISE_COPYABLE(Key)) && (BASISU_IS_BITWISE_COPYABLE(Value))) - { - memcpy(pDst, pSrc, sizeof(value_type)); - } - else - { - if (BASISU_IS_BITWISE_COPYABLE(Key)) - memcpy(&pDst->first, &pSrc->first, sizeof(Key)); - else - scalar_type::construct(&pDst->first, pSrc->first); - - if (BASISU_IS_BITWISE_COPYABLE(Value)) - memcpy(&pDst->second, &pSrc->second, sizeof(Value)); - else - scalar_type::construct(&pDst->second, pSrc->second); - } - } - - static inline void destruct_value_type(value_type* p) - { - scalar_type::destruct(&p->first); - scalar_type::destruct(&p->second); - } - - // Moves *pSrc to *pDst efficiently. - // pDst should NOT be constructed on entry. - static inline void move_node(node* pDst, node* pSrc, bool update_src_state = true) - { - assert(!pDst->state); - - if (BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(Key) && BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(Value)) - { - memcpy(pDst, pSrc, sizeof(node)); - } - else - { - if (BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(Key)) - memcpy(&pDst->first, &pSrc->first, sizeof(Key)); - else - { - scalar_type::construct(&pDst->first, pSrc->first); - scalar_type::destruct(&pSrc->first); - } - - if (BASISU_IS_BITWISE_COPYABLE_OR_MOVABLE(Value)) - memcpy(&pDst->second, &pSrc->second, sizeof(Value)); - else - { - scalar_type::construct(&pDst->second, pSrc->second); - scalar_type::destruct(&pSrc->second); - } - - pDst->state = cStateValid; - } - - if (update_src_state) - pSrc->state = cStateInvalid; - } - - struct raw_node - { - inline raw_node() - { - node* p = reinterpret_cast(this); - p->state = cStateInvalid; - } - - inline ~raw_node() - { - node* p = reinterpret_cast(this); - if (p->state) - hash_map_type::destruct_value_type(p); - } - - inline raw_node(const raw_node& other) - { - node* pDst = reinterpret_cast(this); - const node* pSrc = reinterpret_cast(&other); - - if (pSrc->state) - { - hash_map_type::construct_value_type(pDst, pSrc); - pDst->state = cStateValid; - } - else - pDst->state = cStateInvalid; - } - - inline raw_node& operator= (const raw_node& rhs) - { - if (this == &rhs) - return *this; - - node* pDst = reinterpret_cast(this); - const node* pSrc = reinterpret_cast(&rhs); - - if (pSrc->state) - { - if (pDst->state) - { - pDst->first = pSrc->first; - pDst->second = pSrc->second; - } - else - { - hash_map_type::construct_value_type(pDst, pSrc); - pDst->state = cStateValid; - } - } - else if (pDst->state) - { - hash_map_type::destruct_value_type(pDst); - pDst->state = cStateInvalid; - } - - return *this; - } - - uint8_t m_bits[sizeof(node)]; - }; - - typedef basisu::vector node_vector; - - node_vector m_values; - uint32_t m_hash_shift; - - Hasher m_hasher; - Equals m_equals; - - uint32_t m_num_valid; - - uint32_t m_grow_threshold; - - inline uint32_t hash_key(const Key& k) const - { - assert((1U << (32U - m_hash_shift)) == m_values.size()); - - uint32_t hash = static_cast(m_hasher(k)); - - // Fibonacci hashing - hash = (2654435769U * hash) >> m_hash_shift; - - assert(hash < m_values.size()); - return hash; - } - - inline const node& get_node(uint32_t index) const - { - return *reinterpret_cast(&m_values[index]); - } - - inline node& get_node(uint32_t index) - { - return *reinterpret_cast(&m_values[index]); - } - - inline state get_node_state(uint32_t index) const - { - return static_cast(get_node(index).state); - } - - inline void set_node_state(uint32_t index, bool valid) - { - get_node(index).state = valid; - } - - inline void grow() - { - uint64_t n = m_values.size() * 3ULL; // was * 2 - - if (!helpers::is_power_of_2(n)) - n = helpers::next_pow2(n); - - if (n > 0x80000000UL) - n = 0x80000000UL; - - rehash(helpers::maximum(cMinHashSize, (uint32_t)n)); - } - - inline void rehash(uint32_t new_hash_size) - { - assert(new_hash_size >= m_num_valid); - assert(helpers::is_power_of_2(new_hash_size)); - - if ((new_hash_size < m_num_valid) || (new_hash_size == m_values.size())) - return; - - hash_map new_map; - new_map.m_values.resize(new_hash_size); - new_map.m_hash_shift = 32U - helpers::floor_log2i(new_hash_size); - assert(new_hash_size == (1U << (32U - new_map.m_hash_shift))); - new_map.m_grow_threshold = UINT_MAX; - - node* pNode = reinterpret_cast(m_values.begin()); - node* pNode_end = pNode + m_values.size(); - - while (pNode != pNode_end) - { - if (pNode->state) - { - new_map.move_into(pNode); - - if (new_map.m_num_valid == m_num_valid) - break; - } - - pNode++; - } - - new_map.m_grow_threshold = (new_hash_size + 1U) >> 1U; - - m_values.clear_no_destruction(); - m_hash_shift = 32; - - swap(new_map); - } - - inline uint32_t find_next(uint32_t index) const - { - index++; - - if (index >= m_values.size()) - return index; - - const node* pNode = &get_node(index); - - for (; ; ) - { - if (pNode->state) - break; - - if (++index >= m_values.size()) - break; - - pNode++; - } - - return index; - } - - inline uint32_t find_index(const Key& k) const - { - if (m_num_valid) - { - uint32_t index = hash_key(k); - const node* pNode = &get_node(index); - - if (pNode->state) - { - if (m_equals(pNode->first, k)) - return index; - - const uint32_t orig_index = index; - - for (; ; ) - { - if (!index) - { - index = m_values.size() - 1; - pNode = &get_node(index); - } - else - { - index--; - pNode--; - } - - if (index == orig_index) - break; - - if (!pNode->state) - break; - - if (m_equals(pNode->first, k)) - return index; - } - } - } - - return m_values.size(); - } - - inline bool insert_no_grow(insert_result& result, const Key& k, const Value& v = Value()) - { - if (!m_values.size()) - return false; - - uint32_t index = hash_key(k); - node* pNode = &get_node(index); - - if (pNode->state) - { - if (m_equals(pNode->first, k)) - { - result.first = iterator(*this, index); - result.second = false; - return true; - } - - const uint32_t orig_index = index; - - for (; ; ) - { - if (!index) - { - index = m_values.size() - 1; - pNode = &get_node(index); - } - else - { - index--; - pNode--; - } - - if (orig_index == index) - return false; - - if (!pNode->state) - break; - - if (m_equals(pNode->first, k)) - { - result.first = iterator(*this, index); - result.second = false; - return true; - } - } - } - - if (m_num_valid >= m_grow_threshold) - return false; - - construct_value_type(pNode, k, v); - - pNode->state = cStateValid; - - m_num_valid++; - assert(m_num_valid <= m_values.size()); - - result.first = iterator(*this, index); - result.second = true; - - return true; - } - - inline void move_into(node* pNode) - { - uint32_t index = hash_key(pNode->first); - node* pDst_node = &get_node(index); - - if (pDst_node->state) - { - const uint32_t orig_index = index; - - for (; ; ) - { - if (!index) - { - index = m_values.size() - 1; - pDst_node = &get_node(index); - } - else - { - index--; - pDst_node--; - } - - if (index == orig_index) - { - assert(false); - return; - } - - if (!pDst_node->state) - break; - } - } - - move_node(pDst_node, pNode, false); - - m_num_valid++; - } - }; - - template - struct bitwise_movable< hash_map > { enum { cFlag = true }; }; - -#if BASISU_HASHMAP_TEST - extern void hash_map_test(); -#endif - -} // namespace basisu - -namespace std -{ - template - inline void swap(basisu::vector& a, basisu::vector& b) - { - a.swap(b); - } - - template - inline void swap(basisu::hash_map& a, basisu::hash_map& b) - { - a.swap(b); - } - -} // namespace std diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_containers_impl.h b/WickedEngine/Utility/basis_universal/transcoder/basisu_containers_impl.h deleted file mode 100644 index d5cb61569..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_containers_impl.h +++ /dev/null @@ -1,315 +0,0 @@ -// basisu_containers_impl.h -// Do not include directly - -#ifdef _MSC_VER -#pragma warning (disable:4127) // warning C4127: conditional expression is constant -#endif - -namespace basisu -{ - bool elemental_vector::increase_capacity(uint32_t min_new_capacity, bool grow_hint, uint32_t element_size, object_mover pMover, bool nofail) - { - assert(m_size <= m_capacity); - - if (sizeof(void *) == sizeof(uint64_t)) - assert(min_new_capacity < (0x400000000ULL / element_size)); - else - assert(min_new_capacity < (0x7FFF0000U / element_size)); - - if (m_capacity >= min_new_capacity) - return true; - - size_t new_capacity = min_new_capacity; - if ((grow_hint) && (!helpers::is_power_of_2((uint64_t)new_capacity))) - { - new_capacity = (size_t)helpers::next_pow2((uint64_t)new_capacity); - - assert(new_capacity && (new_capacity > m_capacity)); - - if (new_capacity < min_new_capacity) - { - if (nofail) - return false; - fprintf(stderr, "vector too large\n"); - abort(); - } - } - - const size_t desired_size = element_size * new_capacity; - size_t actual_size = 0; - if (!pMover) - { - void* new_p = realloc(m_p, desired_size); - if (!new_p) - { - if (nofail) - return false; - - char buf[256]; -#ifdef _MSC_VER - sprintf_s(buf, sizeof(buf), "vector: realloc() failed allocating %u bytes", (uint32_t)desired_size); -#else - sprintf(buf, "vector: realloc() failed allocating %u bytes", (uint32_t)desired_size); -#endif - fprintf(stderr, "%s", buf); - abort(); - } - -#if BASISU_VECTOR_DETERMINISTIC - actual_size = desired_size; -#elif defined(_MSC_VER) - actual_size = _msize(new_p); -#elif HAS_MALLOC_USABLE_SIZE - actual_size = malloc_usable_size(new_p); -#else - actual_size = desired_size; -#endif - m_p = new_p; - } - else - { - void* new_p = malloc(desired_size); - if (!new_p) - { - if (nofail) - return false; - - char buf[256]; -#ifdef _MSC_VER - sprintf_s(buf, sizeof(buf), "vector: malloc() failed allocating %u bytes", (uint32_t)desired_size); -#else - sprintf(buf, "vector: malloc() failed allocating %u bytes", (uint32_t)desired_size); -#endif - fprintf(stderr, "%s", buf); - abort(); - } - -#if BASISU_VECTOR_DETERMINISTIC - actual_size = desired_size; -#elif defined(_MSC_VER) - actual_size = _msize(new_p); -#elif HAS_MALLOC_USABLE_SIZE - actual_size = malloc_usable_size(new_p); -#else - actual_size = desired_size; -#endif - - (*pMover)(new_p, m_p, m_size); - - if (m_p) - free(m_p); - - m_p = new_p; - } - - if (actual_size > desired_size) - m_capacity = static_cast(actual_size / element_size); - else - m_capacity = static_cast(new_capacity); - - return true; - } - -#if BASISU_HASHMAP_TEST - -#define HASHMAP_TEST_VERIFY(c) do { if (!(c)) handle_hashmap_test_verify_failure(__LINE__); } while(0) - - static void handle_hashmap_test_verify_failure(int line) - { - fprintf(stderr, "HASHMAP_TEST_VERIFY() faild on line %i\n", line); - abort(); - } - - class counted_obj - { - public: - counted_obj(uint32_t v = 0) : - m_val(v) - { - m_count++; - } - - counted_obj(const counted_obj& obj) : - m_val(obj.m_val) - { - m_count++; - } - - ~counted_obj() - { - assert(m_count > 0); - m_count--; - } - - static uint32_t m_count; - - uint32_t m_val; - - operator size_t() const { return m_val; } - - bool operator== (const counted_obj& rhs) const { return m_val == rhs.m_val; } - bool operator== (const uint32_t rhs) const { return m_val == rhs; } - - }; - - uint32_t counted_obj::m_count; - - static uint32_t urand32() - { - uint32_t a = rand(); - uint32_t b = rand() << 15; - uint32_t c = rand() << (32 - 15); - return a ^ b ^ c; - } - - static int irand32(int l, int h) - { - assert(l < h); - if (l >= h) - return l; - - uint32_t range = static_cast(h - l); - - uint32_t rnd = urand32(); - - uint32_t rnd_range = static_cast((((uint64_t)range) * ((uint64_t)rnd)) >> 32U); - - int result = l + rnd_range; - assert((result >= l) && (result < h)); - return result; - } - - void hash_map_test() - { - { - basisu::hash_map k; - basisu::hash_map l; - std::swap(k, l); - - k.begin(); - k.end(); - k.clear(); - k.empty(); - k.erase(0); - k.insert(0, 1); - k.find(0); - k.get_equals(); - k.get_hasher(); - k.get_table_size(); - k.reset(); - k.reserve(1); - k = l; - k.set_equals(l.get_equals()); - k.set_hasher(l.get_hasher()); - k.get_table_size(); - } - - uint32_t seed = 0; - for (; ; ) - { - seed++; - - typedef basisu::hash_map my_hash_map; - my_hash_map m; - - const uint32_t n = irand32(0, 100000); - - printf("%u\n", n); - - srand(seed); // r1.seed(seed); - - basisu::vector q; - - uint32_t count = 0; - for (uint32_t i = 0; i < n; i++) - { - uint32_t v = urand32() & 0x7FFFFFFF; - my_hash_map::insert_result res = m.insert(counted_obj(v), counted_obj(v ^ 0xdeadbeef)); - if (res.second) - { - count++; - q.push_back(v); - } - } - - HASHMAP_TEST_VERIFY(m.size() == count); - - srand(seed); - - my_hash_map cm(m); - m.clear(); - m = cm; - cm.reset(); - - for (uint32_t i = 0; i < n; i++) - { - uint32_t v = urand32() & 0x7FFFFFFF; - my_hash_map::const_iterator it = m.find(counted_obj(v)); - HASHMAP_TEST_VERIFY(it != m.end()); - HASHMAP_TEST_VERIFY(it->first == v); - HASHMAP_TEST_VERIFY(it->second == (v ^ 0xdeadbeef)); - } - - for (uint32_t t = 0; t < 2; t++) - { - const uint32_t nd = irand32(1, q.size() + 1); - for (uint32_t i = 0; i < nd; i++) - { - uint32_t p = irand32(0, q.size()); - - int k = q[p]; - if (k >= 0) - { - q[p] = -k - 1; - - bool s = m.erase(counted_obj(k)); - HASHMAP_TEST_VERIFY(s); - } - } - - typedef basisu::hash_map uint_hash_set; - uint_hash_set s; - - for (uint32_t i = 0; i < q.size(); i++) - { - int v = q[i]; - - if (v >= 0) - { - my_hash_map::const_iterator it = m.find(counted_obj(v)); - HASHMAP_TEST_VERIFY(it != m.end()); - HASHMAP_TEST_VERIFY(it->first == (uint32_t)v); - HASHMAP_TEST_VERIFY(it->second == ((uint32_t)v ^ 0xdeadbeef)); - - s.insert(v); - } - else - { - my_hash_map::const_iterator it = m.find(counted_obj(-v - 1)); - HASHMAP_TEST_VERIFY(it == m.end()); - } - } - - uint32_t found_count = 0; - for (my_hash_map::const_iterator it = m.begin(); it != m.end(); ++it) - { - HASHMAP_TEST_VERIFY(it->second == ((uint32_t)it->first ^ 0xdeadbeef)); - - uint_hash_set::const_iterator fit(s.find((uint32_t)it->first)); - HASHMAP_TEST_VERIFY(fit != s.end()); - - HASHMAP_TEST_VERIFY(fit->first == it->first); - - found_count++; - } - - HASHMAP_TEST_VERIFY(found_count == s.size()); - } - - HASHMAP_TEST_VERIFY(counted_obj::m_count == m.size() * 2); - } - } - -#endif // BASISU_HASHMAP_TEST - -} // namespace basisu diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_file_headers.h b/WickedEngine/Utility/basis_universal/transcoder/basisu_file_headers.h deleted file mode 100644 index 4316d738e..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_file_headers.h +++ /dev/null @@ -1,142 +0,0 @@ -// basis_file_headers.h -// Copyright (C) 2019-2020 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once -#include "basisu_transcoder_internal.h" - -namespace basist -{ - // Slice desc header flags - enum basis_slice_desc_flags - { - cSliceDescFlagsHasAlpha = 1, - - // Video only: Frame doesn't refer to previous frame (no usage of conditional replenishment pred symbols) - // Currently the first frame is always an I-Frame, all subsequent frames are P-Frames. This will eventually be changed to periodic I-Frames. - cSliceDescFlagsFrameIsIFrame = 2 - }; - -#pragma pack(push) -#pragma pack(1) - struct basis_slice_desc - { - basisu::packed_uint<3> m_image_index; // The index of the source image provided to the encoder (will always appear in order from first to last, first image index is 0, no skipping allowed) - basisu::packed_uint<1> m_level_index; // The mipmap level index (mipmaps will always appear from largest to smallest) - basisu::packed_uint<1> m_flags; // enum basis_slice_desc_flags - - basisu::packed_uint<2> m_orig_width; // The original image width (may not be a multiple of 4 pixels) - basisu::packed_uint<2> m_orig_height; // The original image height (may not be a multiple of 4 pixels) - - basisu::packed_uint<2> m_num_blocks_x; // The slice's block X dimensions. Each block is 4x4 pixels. The slice's pixel resolution may or may not be a power of 2. - basisu::packed_uint<2> m_num_blocks_y; // The slice's block Y dimensions. - - basisu::packed_uint<4> m_file_ofs; // Offset from the start of the file to the start of the slice's data - basisu::packed_uint<4> m_file_size; // The size of the compressed slice data in bytes - - basisu::packed_uint<2> m_slice_data_crc16; // The CRC16 of the compressed slice data, for extra-paranoid use cases - }; - - // File header files - enum basis_header_flags - { - // Always set for ETC1S files. Not set for UASTC files. - cBASISHeaderFlagETC1S = 1, - - // Set if the texture had to be Y flipped before encoding. The actual interpretation of this (is Y up or down?) is up to the user. - cBASISHeaderFlagYFlipped = 2, - - // Set if any slices contain alpha (for ETC1S, if the odd slices contain alpha data) - cBASISHeaderFlagHasAlphaSlices = 4, - - // For ETC1S files, this will be true if the file utilizes a codebook from another .basis file. - cBASISHeaderFlagUsesGlobalCodebook = 8, - - // Set if the texture data is sRGB, otherwise it's linear. - // In reality, we have no idea if the texture data is actually linear or sRGB. This is the m_perceptual parameter passed to the compressor. - cBASISHeaderFlagSRGB = 16, - }; - - // The image type field attempts to describe how to interpret the image data in a Basis file. - // The encoder library doesn't really do anything special or different with these texture types, this is mostly here for the benefit of the user. - // We do make sure the various constraints are followed (2DArray/cubemap/videoframes/volume implies that each image has the same resolution and # of mipmap levels, etc., cubemap implies that the # of image slices is a multiple of 6) - enum basis_texture_type - { - cBASISTexType2D = 0, // An arbitrary array of 2D RGB or RGBA images with optional mipmaps, array size = # images, each image may have a different resolution and # of mipmap levels - cBASISTexType2DArray = 1, // An array of 2D RGB or RGBA images with optional mipmaps, array size = # images, each image has the same resolution and mipmap levels - cBASISTexTypeCubemapArray = 2, // an array of cubemap levels, total # of images must be divisable by 6, in X+, X-, Y+, Y-, Z+, Z- order, with optional mipmaps - cBASISTexTypeVideoFrames = 3, // An array of 2D video frames, with optional mipmaps, # frames = # images, each image has the same resolution and # of mipmap levels - cBASISTexTypeVolume = 4, // A 3D texture with optional mipmaps, Z dimension = # images, each image has the same resolution and # of mipmap levels - - cBASISTexTypeTotal - }; - - enum - { - cBASISMaxUSPerFrame = 0xFFFFFF - }; - - enum class basis_tex_format - { - cETC1S = 0, - cUASTC4x4 = 1 - }; - - struct basis_file_header - { - enum - { - cBASISSigValue = ('B' << 8) | 's', - cBASISFirstVersion = 0x10 - }; - - basisu::packed_uint<2> m_sig; // 2 byte file signature - basisu::packed_uint<2> m_ver; // Baseline file version - basisu::packed_uint<2> m_header_size; // Header size in bytes, sizeof(basis_file_header) - basisu::packed_uint<2> m_header_crc16; // CRC16 of the remaining header data - - basisu::packed_uint<4> m_data_size; // The total size of all data after the header - basisu::packed_uint<2> m_data_crc16; // The CRC16 of all data after the header - - basisu::packed_uint<3> m_total_slices; // The total # of compressed slices (1 slice per image, or 2 for alpha .basis files) - - basisu::packed_uint<3> m_total_images; // The total # of images - - basisu::packed_uint<1> m_tex_format; // enum basis_tex_format - basisu::packed_uint<2> m_flags; // enum basist::header_flags - basisu::packed_uint<1> m_tex_type; // enum basist::basis_texture_type - basisu::packed_uint<3> m_us_per_frame; // Framerate of video, in microseconds per frame - - basisu::packed_uint<4> m_reserved; // For future use - basisu::packed_uint<4> m_userdata0; // For client use - basisu::packed_uint<4> m_userdata1; // For client use - - basisu::packed_uint<2> m_total_endpoints; // The number of endpoints in the endpoint codebook - basisu::packed_uint<4> m_endpoint_cb_file_ofs; // The compressed endpoint codebook's file offset relative to the start of the file - basisu::packed_uint<3> m_endpoint_cb_file_size; // The compressed endpoint codebook's size in bytes - - basisu::packed_uint<2> m_total_selectors; // The number of selectors in the endpoint codebook - basisu::packed_uint<4> m_selector_cb_file_ofs; // The compressed selectors codebook's file offset relative to the start of the file - basisu::packed_uint<3> m_selector_cb_file_size; // The compressed selector codebook's size in bytes - - basisu::packed_uint<4> m_tables_file_ofs; // The file offset of the compressed Huffman codelength tables, for decompressing slices - basisu::packed_uint<4> m_tables_file_size; // The file size in bytes of the compressed huffman codelength tables - - basisu::packed_uint<4> m_slice_desc_file_ofs; // The file offset to the slice description array, usually follows the header - - basisu::packed_uint<4> m_extended_file_ofs; // The file offset of the "extended" header and compressed data, for future use - basisu::packed_uint<4> m_extended_file_size; // The file size in bytes of the "extended" header and compressed data, for future use - }; -#pragma pack (pop) - -} // namespace basist diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder.cpp b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder.cpp deleted file mode 100644 index 3aeba0ee7..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder.cpp +++ /dev/null @@ -1,17479 +0,0 @@ -// basisu_transcoder.cpp -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "basisu_transcoder.h" -#include -#include "basisu_containers_impl.h" - -#ifndef BASISD_IS_BIG_ENDIAN -// TODO: This doesn't work on OSX. How can this be so difficult? -//#if defined(__BIG_ENDIAN__) || defined(_BIG_ENDIAN) || defined(BIG_ENDIAN) -// #define BASISD_IS_BIG_ENDIAN (1) -//#else - #define BASISD_IS_BIG_ENDIAN (0) -//#endif -#endif - -#ifndef BASISD_USE_UNALIGNED_WORD_READS - #ifdef __EMSCRIPTEN__ - // Can't use unaligned loads/stores with WebAssembly. - #define BASISD_USE_UNALIGNED_WORD_READS (0) - #elif defined(_M_AMD64) || defined(_M_IX86) || defined(__i386__) || defined(__x86_64__) - #define BASISD_USE_UNALIGNED_WORD_READS (1) - #else - #define BASISD_USE_UNALIGNED_WORD_READS (0) - #endif -#endif - -// Using unaligned loads and stores causes errors when using UBSan. Jam it off. -#if defined(__has_feature) -#if __has_feature(undefined_behavior_sanitizer) -#undef BASISD_USE_UNALIGNED_WORD_READS -#define BASISD_USE_UNALIGNED_WORD_READS 0 -#endif -#endif - -#define BASISD_SUPPORTED_BASIS_VERSION (0x13) - -#ifndef BASISD_SUPPORT_KTX2 - #error Must have defined BASISD_SUPPORT_KTX2 -#endif - -#ifndef BASISD_SUPPORT_KTX2_ZSTD -#error Must have defined BASISD_SUPPORT_KTX2_ZSTD -#endif - -// Set to 1 for fuzz testing. This will disable all CRC16 checks on headers and compressed data. -#ifndef BASISU_NO_HEADER_OR_DATA_CRC16_CHECKS - #define BASISU_NO_HEADER_OR_DATA_CRC16_CHECKS 0 -#endif - -#ifndef BASISD_SUPPORT_DXT1 - #define BASISD_SUPPORT_DXT1 1 -#endif - -#ifndef BASISD_SUPPORT_DXT5A - #define BASISD_SUPPORT_DXT5A 1 -#endif - -// Disable all BC7 transcoders if necessary (useful when cross compiling to Javascript) -#if defined(BASISD_SUPPORT_BC7) && !BASISD_SUPPORT_BC7 - #ifndef BASISD_SUPPORT_BC7_MODE5 - #define BASISD_SUPPORT_BC7_MODE5 0 - #endif -#endif // !BASISD_SUPPORT_BC7 - -// BC7 mode 5 supports both opaque and opaque+alpha textures, and uses less memory BC1. -#ifndef BASISD_SUPPORT_BC7_MODE5 - #define BASISD_SUPPORT_BC7_MODE5 1 -#endif - -#ifndef BASISD_SUPPORT_PVRTC1 - #define BASISD_SUPPORT_PVRTC1 1 -#endif - -#ifndef BASISD_SUPPORT_ETC2_EAC_A8 - #define BASISD_SUPPORT_ETC2_EAC_A8 1 -#endif - -// Set BASISD_SUPPORT_UASTC to 0 to completely disable support for transcoding UASTC files. -#ifndef BASISD_SUPPORT_UASTC - #define BASISD_SUPPORT_UASTC 1 -#endif - -#ifndef BASISD_SUPPORT_ASTC - #define BASISD_SUPPORT_ASTC 1 -#endif - -// Note that if BASISD_SUPPORT_ATC is enabled, BASISD_SUPPORT_DXT5A should also be enabled for alpha support. -#ifndef BASISD_SUPPORT_ATC - #define BASISD_SUPPORT_ATC 1 -#endif - -// Support for ETC2 EAC R11 and ETC2 EAC RG11 -#ifndef BASISD_SUPPORT_ETC2_EAC_RG11 - #define BASISD_SUPPORT_ETC2_EAC_RG11 1 -#endif - -// If BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY is 1, opaque blocks will be transcoded to ASTC at slightly higher quality (higher than BC1), but the transcoder tables will be 2x as large. -// This impacts grayscale and grayscale+alpha textures the most. -#ifndef BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY - #ifdef __EMSCRIPTEN__ - // Let's assume size matters more than quality when compiling with emscripten. - #define BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY 0 - #else - // Compiling native, so an extra 64K lookup table is probably acceptable. - #define BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY 1 - #endif -#endif - -#ifndef BASISD_SUPPORT_FXT1 - #define BASISD_SUPPORT_FXT1 1 -#endif - -#ifndef BASISD_SUPPORT_PVRTC2 - #define BASISD_SUPPORT_PVRTC2 1 -#endif - -#if BASISD_SUPPORT_PVRTC2 - #if !BASISD_SUPPORT_ATC - #error BASISD_SUPPORT_ATC must be 1 if BASISD_SUPPORT_PVRTC2 is 1 - #endif -#endif - -#if BASISD_SUPPORT_ATC - #if !BASISD_SUPPORT_DXT5A - #error BASISD_SUPPORT_DXT5A must be 1 if BASISD_SUPPORT_ATC is 1 - #endif -#endif - -#define BASISD_WRITE_NEW_BC7_MODE5_TABLES 0 -#define BASISD_WRITE_NEW_DXT1_TABLES 0 -#define BASISD_WRITE_NEW_ETC2_EAC_A8_TABLES 0 -#define BASISD_WRITE_NEW_ASTC_TABLES 0 -#define BASISD_WRITE_NEW_ATC_TABLES 0 -#define BASISD_WRITE_NEW_ETC2_EAC_R11_TABLES 0 - -#ifndef BASISD_ENABLE_DEBUG_FLAGS - #define BASISD_ENABLE_DEBUG_FLAGS 0 -#endif - -// If KTX2 support is enabled, we may need Zstd for decompression of supercompressed UASTC files. Include this header. -#if BASISD_SUPPORT_KTX2 - // If BASISD_SUPPORT_KTX2_ZSTD is 0, UASTC files compressed with Zstd cannot be loaded. - #if BASISD_SUPPORT_KTX2_ZSTD - // We only use two Zstd API's: ZSTD_decompress() and ZSTD_isError() - #include "../zstd/zstd.h" - #endif -#endif - -namespace basisu -{ - bool g_debug_printf; - - void enable_debug_printf(bool enabled) - { - g_debug_printf = enabled; - } - - void debug_printf(const char* pFmt, ...) - { -#if BASISU_FORCE_DEVEL_MESSAGES - g_debug_printf = true; -#endif - if (g_debug_printf) - { - va_list args; - va_start(args, pFmt); - vprintf(pFmt, args); - va_end(args); - } - } -} // namespace basisu - -namespace basist -{ - -#if BASISD_ENABLE_DEBUG_FLAGS - static uint32_t g_debug_flags = 0; -#endif - - uint32_t get_debug_flags() - { -#if BASISD_ENABLE_DEBUG_FLAGS - return g_debug_flags; -#else - return 0; -#endif - } - - void set_debug_flags(uint32_t f) - { - BASISU_NOTE_UNUSED(f); -#if BASISD_ENABLE_DEBUG_FLAGS - g_debug_flags = f; -#endif - } - - inline uint16_t byteswap_uint16(uint16_t v) - { - return static_cast((v >> 8) | (v << 8)); - } - - static inline int32_t clampi(int32_t value, int32_t low, int32_t high) { if (value < low) value = low; else if (value > high) value = high; return value; } - static inline float clampf(float value, float low, float high) { if (value < low) value = low; else if (value > high) value = high; return value; } - static inline float saturate(float value) { return clampf(value, 0, 1.0f); } - - static inline uint8_t mul_8(uint32_t v, uint32_t q) { v = v * q + 128; return (uint8_t)((v + (v >> 8)) >> 8); } - - uint16_t crc16(const void* r, size_t size, uint16_t crc) - { - crc = ~crc; - - const uint8_t* p = static_cast(r); - for (; size; --size) - { - const uint16_t q = *p++ ^ (crc >> 8); - uint16_t k = (q >> 4) ^ q; - crc = (((crc << 8) ^ k) ^ (k << 5)) ^ (k << 12); - } - - return static_cast(~crc); - } - - enum etc_constants - { - cETC1BytesPerBlock = 8U, - - cETC1SelectorBits = 2U, - cETC1SelectorValues = 1U << cETC1SelectorBits, - cETC1SelectorMask = cETC1SelectorValues - 1U, - - cETC1BlockShift = 2U, - cETC1BlockSize = 1U << cETC1BlockShift, - - cETC1LSBSelectorIndicesBitOffset = 0, - cETC1MSBSelectorIndicesBitOffset = 16, - - cETC1FlipBitOffset = 32, - cETC1DiffBitOffset = 33, - - cETC1IntenModifierNumBits = 3, - cETC1IntenModifierValues = 1 << cETC1IntenModifierNumBits, - cETC1RightIntenModifierTableBitOffset = 34, - cETC1LeftIntenModifierTableBitOffset = 37, - - // Base+Delta encoding (5 bit bases, 3 bit delta) - cETC1BaseColorCompNumBits = 5, - cETC1BaseColorCompMax = 1 << cETC1BaseColorCompNumBits, - - cETC1DeltaColorCompNumBits = 3, - cETC1DeltaColorComp = 1 << cETC1DeltaColorCompNumBits, - cETC1DeltaColorCompMax = 1 << cETC1DeltaColorCompNumBits, - - cETC1BaseColor5RBitOffset = 59, - cETC1BaseColor5GBitOffset = 51, - cETC1BaseColor5BBitOffset = 43, - - cETC1DeltaColor3RBitOffset = 56, - cETC1DeltaColor3GBitOffset = 48, - cETC1DeltaColor3BBitOffset = 40, - - // Absolute (non-delta) encoding (two 4-bit per component bases) - cETC1AbsColorCompNumBits = 4, - cETC1AbsColorCompMax = 1 << cETC1AbsColorCompNumBits, - - cETC1AbsColor4R1BitOffset = 60, - cETC1AbsColor4G1BitOffset = 52, - cETC1AbsColor4B1BitOffset = 44, - - cETC1AbsColor4R2BitOffset = 56, - cETC1AbsColor4G2BitOffset = 48, - cETC1AbsColor4B2BitOffset = 40, - - cETC1ColorDeltaMin = -4, - cETC1ColorDeltaMax = 3, - - // Delta3: - // 0 1 2 3 4 5 6 7 - // 000 001 010 011 100 101 110 111 - // 0 1 2 3 -4 -3 -2 -1 - }; - -#define DECLARE_ETC1_INTEN_TABLE(name, N) \ - static const int name[cETC1IntenModifierValues][cETC1SelectorValues] = \ - { \ - { N * -8, N * -2, N * 2, N * 8 },{ N * -17, N * -5, N * 5, N * 17 },{ N * -29, N * -9, N * 9, N * 29 },{ N * -42, N * -13, N * 13, N * 42 }, \ - { N * -60, N * -18, N * 18, N * 60 },{ N * -80, N * -24, N * 24, N * 80 },{ N * -106, N * -33, N * 33, N * 106 },{ N * -183, N * -47, N * 47, N * 183 } \ - }; - - DECLARE_ETC1_INTEN_TABLE(g_etc1_inten_tables, 1); - DECLARE_ETC1_INTEN_TABLE(g_etc1_inten_tables16, 16); - DECLARE_ETC1_INTEN_TABLE(g_etc1_inten_tables48, 3 * 16); - - //const uint8_t g_etc1_to_selector_index[cETC1SelectorValues] = { 2, 3, 1, 0 }; - const uint8_t g_selector_index_to_etc1[cETC1SelectorValues] = { 3, 2, 0, 1 }; - - static const uint8_t g_etc_5_to_8[32] = { 0, 8, 16, 24, 33, 41, 49, 57, 66, 74, 82, 90, 99, 107, 115, 123, 132, 140, 148, 156, 165, 173, 181, 189, 198, 206, 214, 222, 231, 239, 247, 255 }; - - struct decoder_etc_block - { - // big endian uint64: - // bit ofs: 56 48 40 32 24 16 8 0 - // byte ofs: b0, b1, b2, b3, b4, b5, b6, b7 - union - { - uint64_t m_uint64; - - uint32_t m_uint32[2]; - - uint8_t m_bytes[8]; - - struct - { - signed m_dred2 : 3; - uint32_t m_red1 : 5; - - signed m_dgreen2 : 3; - uint32_t m_green1 : 5; - - signed m_dblue2 : 3; - uint32_t m_blue1 : 5; - - uint32_t m_flip : 1; - uint32_t m_diff : 1; - uint32_t m_cw2 : 3; - uint32_t m_cw1 : 3; - - uint32_t m_selectors; - } m_differential; - }; - - inline void clear() - { - assert(sizeof(*this) == 8); - basisu::clear_obj(*this); - } - - inline void set_byte_bits(uint32_t ofs, uint32_t num, uint32_t bits) - { - assert((ofs + num) <= 64U); - assert(num && (num < 32U)); - assert((ofs >> 3) == ((ofs + num - 1) >> 3)); - assert(bits < (1U << num)); - const uint32_t byte_ofs = 7 - (ofs >> 3); - const uint32_t byte_bit_ofs = ofs & 7; - const uint32_t mask = (1 << num) - 1; - m_bytes[byte_ofs] &= ~(mask << byte_bit_ofs); - m_bytes[byte_ofs] |= (bits << byte_bit_ofs); - } - - inline void set_flip_bit(bool flip) - { - m_bytes[3] &= ~1; - m_bytes[3] |= static_cast(flip); - } - - inline void set_diff_bit(bool diff) - { - m_bytes[3] &= ~2; - m_bytes[3] |= (static_cast(diff) << 1); - } - - // Sets intensity modifier table (0-7) used by subblock subblock_id (0 or 1) - inline void set_inten_table(uint32_t subblock_id, uint32_t t) - { - assert(subblock_id < 2); - assert(t < 8); - const uint32_t ofs = subblock_id ? 2 : 5; - m_bytes[3] &= ~(7 << ofs); - m_bytes[3] |= (t << ofs); - } - - // Selector "val" ranges from 0-3 and is a direct index into g_etc1_inten_tables. - inline void set_selector(uint32_t x, uint32_t y, uint32_t val) - { - assert((x | y | val) < 4); - const uint32_t bit_index = x * 4 + y; - - uint8_t* p = &m_bytes[7 - (bit_index >> 3)]; - - const uint32_t byte_bit_ofs = bit_index & 7; - const uint32_t mask = 1 << byte_bit_ofs; - - static const uint8_t s_selector_index_to_etc1[4] = { 3, 2, 0, 1 }; - const uint32_t etc1_val = s_selector_index_to_etc1[val]; - - const uint32_t lsb = etc1_val & 1; - const uint32_t msb = etc1_val >> 1; - - p[0] &= ~mask; - p[0] |= (lsb << byte_bit_ofs); - - p[-2] &= ~mask; - p[-2] |= (msb << byte_bit_ofs); - } - - // Returned encoded selector value ranges from 0-3 (this is NOT a direct index into g_etc1_inten_tables, see get_selector()) - inline uint32_t get_raw_selector(uint32_t x, uint32_t y) const - { - assert((x | y) < 4); - - const uint32_t bit_index = x * 4 + y; - const uint32_t byte_bit_ofs = bit_index & 7; - const uint8_t* p = &m_bytes[7 - (bit_index >> 3)]; - const uint32_t lsb = (p[0] >> byte_bit_ofs) & 1; - const uint32_t msb = (p[-2] >> byte_bit_ofs) & 1; - const uint32_t val = lsb | (msb << 1); - - return val; - } - - // Returned selector value ranges from 0-3 and is a direct index into g_etc1_inten_tables. - inline uint32_t get_selector(uint32_t x, uint32_t y) const - { - static const uint8_t s_etc1_to_selector_index[cETC1SelectorValues] = { 2, 3, 1, 0 }; - return s_etc1_to_selector_index[get_raw_selector(x, y)]; - } - - inline void set_raw_selector_bits(uint32_t bits) - { - m_bytes[4] = static_cast(bits); - m_bytes[5] = static_cast(bits >> 8); - m_bytes[6] = static_cast(bits >> 16); - m_bytes[7] = static_cast(bits >> 24); - } - - inline bool are_all_selectors_the_same() const - { - uint32_t v = *reinterpret_cast(&m_bytes[4]); - - if ((v == 0xFFFFFFFF) || (v == 0xFFFF) || (!v) || (v == 0xFFFF0000)) - return true; - - return false; - } - - inline void set_raw_selector_bits(uint8_t byte0, uint8_t byte1, uint8_t byte2, uint8_t byte3) - { - m_bytes[4] = byte0; - m_bytes[5] = byte1; - m_bytes[6] = byte2; - m_bytes[7] = byte3; - } - - inline uint32_t get_raw_selector_bits() const - { - return m_bytes[4] | (m_bytes[5] << 8) | (m_bytes[6] << 16) | (m_bytes[7] << 24); - } - - inline void set_base4_color(uint32_t idx, uint16_t c) - { - if (idx) - { - set_byte_bits(cETC1AbsColor4R2BitOffset, 4, (c >> 8) & 15); - set_byte_bits(cETC1AbsColor4G2BitOffset, 4, (c >> 4) & 15); - set_byte_bits(cETC1AbsColor4B2BitOffset, 4, c & 15); - } - else - { - set_byte_bits(cETC1AbsColor4R1BitOffset, 4, (c >> 8) & 15); - set_byte_bits(cETC1AbsColor4G1BitOffset, 4, (c >> 4) & 15); - set_byte_bits(cETC1AbsColor4B1BitOffset, 4, c & 15); - } - } - - inline void set_base5_color(uint16_t c) - { - set_byte_bits(cETC1BaseColor5RBitOffset, 5, (c >> 10) & 31); - set_byte_bits(cETC1BaseColor5GBitOffset, 5, (c >> 5) & 31); - set_byte_bits(cETC1BaseColor5BBitOffset, 5, c & 31); - } - - void set_delta3_color(uint16_t c) - { - set_byte_bits(cETC1DeltaColor3RBitOffset, 3, (c >> 6) & 7); - set_byte_bits(cETC1DeltaColor3GBitOffset, 3, (c >> 3) & 7); - set_byte_bits(cETC1DeltaColor3BBitOffset, 3, c & 7); - } - - void set_block_color4(const color32& c0_unscaled, const color32& c1_unscaled) - { - set_diff_bit(false); - - set_base4_color(0, pack_color4(c0_unscaled, false)); - set_base4_color(1, pack_color4(c1_unscaled, false)); - } - - void set_block_color5(const color32& c0_unscaled, const color32& c1_unscaled) - { - set_diff_bit(true); - - set_base5_color(pack_color5(c0_unscaled, false)); - - int dr = c1_unscaled.r - c0_unscaled.r; - int dg = c1_unscaled.g - c0_unscaled.g; - int db = c1_unscaled.b - c0_unscaled.b; - - set_delta3_color(pack_delta3(dr, dg, db)); - } - - bool set_block_color5_check(const color32& c0_unscaled, const color32& c1_unscaled) - { - set_diff_bit(true); - - set_base5_color(pack_color5(c0_unscaled, false)); - - int dr = c1_unscaled.r - c0_unscaled.r; - int dg = c1_unscaled.g - c0_unscaled.g; - int db = c1_unscaled.b - c0_unscaled.b; - - if (((dr < cETC1ColorDeltaMin) || (dr > cETC1ColorDeltaMax)) || - ((dg < cETC1ColorDeltaMin) || (dg > cETC1ColorDeltaMax)) || - ((db < cETC1ColorDeltaMin) || (db > cETC1ColorDeltaMax))) - return false; - - set_delta3_color(pack_delta3(dr, dg, db)); - - return true; - } - - inline uint32_t get_byte_bits(uint32_t ofs, uint32_t num) const - { - assert((ofs + num) <= 64U); - assert(num && (num <= 8U)); - assert((ofs >> 3) == ((ofs + num - 1) >> 3)); - const uint32_t byte_ofs = 7 - (ofs >> 3); - const uint32_t byte_bit_ofs = ofs & 7; - return (m_bytes[byte_ofs] >> byte_bit_ofs) & ((1 << num) - 1); - } - - inline uint16_t get_base5_color() const - { - const uint32_t r = get_byte_bits(cETC1BaseColor5RBitOffset, 5); - const uint32_t g = get_byte_bits(cETC1BaseColor5GBitOffset, 5); - const uint32_t b = get_byte_bits(cETC1BaseColor5BBitOffset, 5); - return static_cast(b | (g << 5U) | (r << 10U)); - } - - inline uint16_t get_base4_color(uint32_t idx) const - { - uint32_t r, g, b; - if (idx) - { - r = get_byte_bits(cETC1AbsColor4R2BitOffset, 4); - g = get_byte_bits(cETC1AbsColor4G2BitOffset, 4); - b = get_byte_bits(cETC1AbsColor4B2BitOffset, 4); - } - else - { - r = get_byte_bits(cETC1AbsColor4R1BitOffset, 4); - g = get_byte_bits(cETC1AbsColor4G1BitOffset, 4); - b = get_byte_bits(cETC1AbsColor4B1BitOffset, 4); - } - return static_cast(b | (g << 4U) | (r << 8U)); - } - - inline color32 get_base5_color_unscaled() const - { - return color32(m_differential.m_red1, m_differential.m_green1, m_differential.m_blue1, 255); - } - - inline bool get_flip_bit() const - { - return (m_bytes[3] & 1) != 0; - } - - inline bool get_diff_bit() const - { - return (m_bytes[3] & 2) != 0; - } - - inline uint32_t get_inten_table(uint32_t subblock_id) const - { - assert(subblock_id < 2); - const uint32_t ofs = subblock_id ? 2 : 5; - return (m_bytes[3] >> ofs) & 7; - } - - inline uint16_t get_delta3_color() const - { - const uint32_t r = get_byte_bits(cETC1DeltaColor3RBitOffset, 3); - const uint32_t g = get_byte_bits(cETC1DeltaColor3GBitOffset, 3); - const uint32_t b = get_byte_bits(cETC1DeltaColor3BBitOffset, 3); - return static_cast(b | (g << 3U) | (r << 6U)); - } - - void get_block_colors(color32* pBlock_colors, uint32_t subblock_index) const - { - color32 b; - - if (get_diff_bit()) - { - if (subblock_index) - unpack_color5(b, get_base5_color(), get_delta3_color(), true, 255); - else - unpack_color5(b, get_base5_color(), true); - } - else - { - b = unpack_color4(get_base4_color(subblock_index), true, 255); - } - - const int* pInten_table = g_etc1_inten_tables[get_inten_table(subblock_index)]; - - pBlock_colors[0].set_noclamp_rgba(clamp255(b.r + pInten_table[0]), clamp255(b.g + pInten_table[0]), clamp255(b.b + pInten_table[0]), 255); - pBlock_colors[1].set_noclamp_rgba(clamp255(b.r + pInten_table[1]), clamp255(b.g + pInten_table[1]), clamp255(b.b + pInten_table[1]), 255); - pBlock_colors[2].set_noclamp_rgba(clamp255(b.r + pInten_table[2]), clamp255(b.g + pInten_table[2]), clamp255(b.b + pInten_table[2]), 255); - pBlock_colors[3].set_noclamp_rgba(clamp255(b.r + pInten_table[3]), clamp255(b.g + pInten_table[3]), clamp255(b.b + pInten_table[3]), 255); - } - - static uint16_t pack_color4(const color32& color, bool scaled, uint32_t bias = 127U) - { - return pack_color4(color.r, color.g, color.b, scaled, bias); - } - - static uint16_t pack_color4(uint32_t r, uint32_t g, uint32_t b, bool scaled, uint32_t bias = 127U) - { - if (scaled) - { - r = (r * 15U + bias) / 255U; - g = (g * 15U + bias) / 255U; - b = (b * 15U + bias) / 255U; - } - - r = basisu::minimum(r, 15U); - g = basisu::minimum(g, 15U); - b = basisu::minimum(b, 15U); - - return static_cast(b | (g << 4U) | (r << 8U)); - } - - static uint16_t pack_color5(const color32& color, bool scaled, uint32_t bias = 127U) - { - return pack_color5(color.r, color.g, color.b, scaled, bias); - } - - static uint16_t pack_color5(uint32_t r, uint32_t g, uint32_t b, bool scaled, uint32_t bias = 127U) - { - if (scaled) - { - r = (r * 31U + bias) / 255U; - g = (g * 31U + bias) / 255U; - b = (b * 31U + bias) / 255U; - } - - r = basisu::minimum(r, 31U); - g = basisu::minimum(g, 31U); - b = basisu::minimum(b, 31U); - - return static_cast(b | (g << 5U) | (r << 10U)); - } - - uint16_t pack_delta3(const color32& color) - { - return pack_delta3(color.r, color.g, color.b); - } - - uint16_t pack_delta3(int r, int g, int b) - { - assert((r >= cETC1ColorDeltaMin) && (r <= cETC1ColorDeltaMax)); - assert((g >= cETC1ColorDeltaMin) && (g <= cETC1ColorDeltaMax)); - assert((b >= cETC1ColorDeltaMin) && (b <= cETC1ColorDeltaMax)); - if (r < 0) r += 8; - if (g < 0) g += 8; - if (b < 0) b += 8; - return static_cast(b | (g << 3) | (r << 6)); - } - - static void unpack_delta3(int& r, int& g, int& b, uint16_t packed_delta3) - { - r = (packed_delta3 >> 6) & 7; - g = (packed_delta3 >> 3) & 7; - b = packed_delta3 & 7; - if (r >= 4) r -= 8; - if (g >= 4) g -= 8; - if (b >= 4) b -= 8; - } - - static color32 unpack_color5(uint16_t packed_color5, bool scaled, uint32_t alpha) - { - uint32_t b = packed_color5 & 31U; - uint32_t g = (packed_color5 >> 5U) & 31U; - uint32_t r = (packed_color5 >> 10U) & 31U; - - if (scaled) - { - b = (b << 3U) | (b >> 2U); - g = (g << 3U) | (g >> 2U); - r = (r << 3U) | (r >> 2U); - } - - assert(alpha <= 255); - - return color32(cNoClamp, r, g, b, alpha); - } - - static void unpack_color5(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color5, bool scaled) - { - color32 c(unpack_color5(packed_color5, scaled, 0)); - r = c.r; - g = c.g; - b = c.b; - } - - static void unpack_color5(color32& result, uint16_t packed_color5, bool scaled) - { - result = unpack_color5(packed_color5, scaled, 255); - } - - static bool unpack_color5(color32& result, uint16_t packed_color5, uint16_t packed_delta3, bool scaled, uint32_t alpha) - { - int dr, dg, db; - unpack_delta3(dr, dg, db, packed_delta3); - - int r = ((packed_color5 >> 10U) & 31U) + dr; - int g = ((packed_color5 >> 5U) & 31U) + dg; - int b = (packed_color5 & 31U) + db; - - bool success = true; - if (static_cast(r | g | b) > 31U) - { - success = false; - r = basisu::clamp(r, 0, 31); - g = basisu::clamp(g, 0, 31); - b = basisu::clamp(b, 0, 31); - } - - if (scaled) - { - b = (b << 3U) | (b >> 2U); - g = (g << 3U) | (g >> 2U); - r = (r << 3U) | (r >> 2U); - } - - result.set_noclamp_rgba(r, g, b, basisu::minimum(alpha, 255U)); - return success; - } - - static color32 unpack_color4(uint16_t packed_color4, bool scaled, uint32_t alpha) - { - uint32_t b = packed_color4 & 15U; - uint32_t g = (packed_color4 >> 4U) & 15U; - uint32_t r = (packed_color4 >> 8U) & 15U; - - if (scaled) - { - b = (b << 4U) | b; - g = (g << 4U) | g; - r = (r << 4U) | r; - } - - return color32(cNoClamp, r, g, b, basisu::minimum(alpha, 255U)); - } - - static void unpack_color4(uint32_t& r, uint32_t& g, uint32_t& b, uint16_t packed_color4, bool scaled) - { - color32 c(unpack_color4(packed_color4, scaled, 0)); - r = c.r; - g = c.g; - b = c.b; - } - - static void get_diff_subblock_colors(color32* pDst, uint16_t packed_color5, uint32_t table_idx) - { - assert(table_idx < cETC1IntenModifierValues); - const int* pInten_modifer_table = &g_etc1_inten_tables[table_idx][0]; - - uint32_t r, g, b; - unpack_color5(r, g, b, packed_color5, true); - - const int ir = static_cast(r), ig = static_cast(g), ib = static_cast(b); - - const int y0 = pInten_modifer_table[0]; - pDst[0].set(clamp255(ir + y0), clamp255(ig + y0), clamp255(ib + y0), 255); - - const int y1 = pInten_modifer_table[1]; - pDst[1].set(clamp255(ir + y1), clamp255(ig + y1), clamp255(ib + y1), 255); - - const int y2 = pInten_modifer_table[2]; - pDst[2].set(clamp255(ir + y2), clamp255(ig + y2), clamp255(ib + y2), 255); - - const int y3 = pInten_modifer_table[3]; - pDst[3].set(clamp255(ir + y3), clamp255(ig + y3), clamp255(ib + y3), 255); - } - - static int clamp255(int x) - { - if (x & 0xFFFFFF00) - { - if (x < 0) - x = 0; - else if (x > 255) - x = 255; - } - - return x; - } - - static void get_block_colors5(color32* pBlock_colors, const color32& base_color5, uint32_t inten_table) - { - color32 b(base_color5); - - b.r = (b.r << 3) | (b.r >> 2); - b.g = (b.g << 3) | (b.g >> 2); - b.b = (b.b << 3) | (b.b >> 2); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[0]), clamp255(b.g + pInten_table[0]), clamp255(b.b + pInten_table[0]), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[1]), clamp255(b.g + pInten_table[1]), clamp255(b.b + pInten_table[1]), 255); - pBlock_colors[2].set(clamp255(b.r + pInten_table[2]), clamp255(b.g + pInten_table[2]), clamp255(b.b + pInten_table[2]), 255); - pBlock_colors[3].set(clamp255(b.r + pInten_table[3]), clamp255(b.g + pInten_table[3]), clamp255(b.b + pInten_table[3]), 255); - } - - static void get_block_color5(const color32& base_color5, uint32_t inten_table, uint32_t index, uint32_t& r, uint32_t &g, uint32_t &b) - { - assert(index < 4); - - uint32_t br = (base_color5.r << 3) | (base_color5.r >> 2); - uint32_t bg = (base_color5.g << 3) | (base_color5.g >> 2); - uint32_t bb = (base_color5.b << 3) | (base_color5.b >> 2); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - r = clamp255(br + pInten_table[index]); - g = clamp255(bg + pInten_table[index]); - b = clamp255(bb + pInten_table[index]); - } - - static void get_block_color5_r(const color32& base_color5, uint32_t inten_table, uint32_t index, uint32_t &r) - { - assert(index < 4); - - uint32_t br = (base_color5.r << 3) | (base_color5.r >> 2); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - r = clamp255(br + pInten_table[index]); - } - - static void get_block_colors5_g(int* pBlock_colors, const color32& base_color5, uint32_t inten_table) - { - const int g = (base_color5.g << 3) | (base_color5.g >> 2); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0] = clamp255(g + pInten_table[0]); - pBlock_colors[1] = clamp255(g + pInten_table[1]); - pBlock_colors[2] = clamp255(g + pInten_table[2]); - pBlock_colors[3] = clamp255(g + pInten_table[3]); - } - - static void get_block_colors5_bounds(color32* pBlock_colors, const color32& base_color5, uint32_t inten_table, uint32_t l = 0, uint32_t h = 3) - { - color32 b(base_color5); - - b.r = (b.r << 3) | (b.r >> 2); - b.g = (b.g << 3) | (b.g >> 2); - b.b = (b.b << 3) | (b.b >> 2); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0].set(clamp255(b.r + pInten_table[l]), clamp255(b.g + pInten_table[l]), clamp255(b.b + pInten_table[l]), 255); - pBlock_colors[1].set(clamp255(b.r + pInten_table[h]), clamp255(b.g + pInten_table[h]), clamp255(b.b + pInten_table[h]), 255); - } - - static void get_block_colors5_bounds_g(uint32_t* pBlock_colors, const color32& base_color5, uint32_t inten_table, uint32_t l = 0, uint32_t h = 3) - { - color32 b(base_color5); - - b.g = (b.g << 3) | (b.g >> 2); - - const int* pInten_table = g_etc1_inten_tables[inten_table]; - - pBlock_colors[0] = clamp255(b.g + pInten_table[l]); - pBlock_colors[1] = clamp255(b.g + pInten_table[h]); - } - }; - - enum dxt_constants - { - cDXT1SelectorBits = 2U, cDXT1SelectorValues = 1U << cDXT1SelectorBits, cDXT1SelectorMask = cDXT1SelectorValues - 1U, - cDXT5SelectorBits = 3U, cDXT5SelectorValues = 1U << cDXT5SelectorBits, cDXT5SelectorMask = cDXT5SelectorValues - 1U, - }; - - static const uint8_t g_etc1_x_selector_unpack[4][256] = - { - { - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, - }, - { - 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, - 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, - 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, - 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, - 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, - 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, - 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, 0, 0, 1, 1, - 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, 2, 2, 3, 3, - }, - - { - 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, - 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, - 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, - 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, - 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, - 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, 1, 1, - 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, - 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, 2, 2, 2, 2, 3, 3, 3, 3, - }, - - { - 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, - 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, - 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, - 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, - 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, - } - }; - - struct dxt1_block - { - enum { cTotalEndpointBytes = 2, cTotalSelectorBytes = 4 }; - - uint8_t m_low_color[cTotalEndpointBytes]; - uint8_t m_high_color[cTotalEndpointBytes]; - uint8_t m_selectors[cTotalSelectorBytes]; - - inline void clear() { basisu::clear_obj(*this); } - - inline uint32_t get_high_color() const { return m_high_color[0] | (m_high_color[1] << 8U); } - inline uint32_t get_low_color() const { return m_low_color[0] | (m_low_color[1] << 8U); } - inline void set_low_color(uint16_t c) { m_low_color[0] = static_cast(c & 0xFF); m_low_color[1] = static_cast((c >> 8) & 0xFF); } - inline void set_high_color(uint16_t c) { m_high_color[0] = static_cast(c & 0xFF); m_high_color[1] = static_cast((c >> 8) & 0xFF); } - inline uint32_t get_selector(uint32_t x, uint32_t y) const { assert((x < 4U) && (y < 4U)); return (m_selectors[y] >> (x * cDXT1SelectorBits)) & cDXT1SelectorMask; } - inline void set_selector(uint32_t x, uint32_t y, uint32_t val) { assert((x < 4U) && (y < 4U) && (val < 4U)); m_selectors[y] &= (~(cDXT1SelectorMask << (x * cDXT1SelectorBits))); m_selectors[y] |= (val << (x * cDXT1SelectorBits)); } - - static uint16_t pack_color(const color32& color, bool scaled, uint32_t bias = 127U) - { - uint32_t r = color.r, g = color.g, b = color.b; - if (scaled) - { - r = (r * 31U + bias) / 255U; - g = (g * 63U + bias) / 255U; - b = (b * 31U + bias) / 255U; - } - return static_cast(basisu::minimum(b, 31U) | (basisu::minimum(g, 63U) << 5U) | (basisu::minimum(r, 31U) << 11U)); - } - - static uint16_t pack_unscaled_color(uint32_t r, uint32_t g, uint32_t b) { return static_cast(b | (g << 5U) | (r << 11U)); } - }; - - struct dxt_selector_range - { - uint32_t m_low; - uint32_t m_high; - }; - - struct etc1_to_dxt1_56_solution - { - uint8_t m_lo; - uint8_t m_hi; - uint16_t m_err; - }; - -#if BASISD_SUPPORT_DXT1 - static dxt_selector_range g_etc1_to_dxt1_selector_ranges[] = - { - { 0, 3 }, - - { 1, 3 }, - { 0, 2 }, - - { 1, 2 }, - - { 2, 3 }, - { 0, 1 }, - }; - - const uint32_t NUM_ETC1_TO_DXT1_SELECTOR_RANGES = sizeof(g_etc1_to_dxt1_selector_ranges) / sizeof(g_etc1_to_dxt1_selector_ranges[0]); - - static uint32_t g_etc1_to_dxt1_selector_range_index[4][4]; - - const uint32_t NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS = 10; - static const uint8_t g_etc1_to_dxt1_selector_mappings[NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS][4] = - { - { 0, 0, 1, 1 }, - { 0, 0, 1, 2 }, - { 0, 0, 1, 3 }, - { 0, 0, 2, 3 }, - { 0, 1, 1, 1 }, - { 0, 1, 2, 2 }, - { 0, 1, 2, 3 }, - { 0, 2, 3, 3 }, - { 1, 2, 2, 2 }, - { 1, 2, 3, 3 }, - }; - - static uint8_t g_etc1_to_dxt1_selector_mappings_raw_dxt1_256[NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS][256]; - static uint8_t g_etc1_to_dxt1_selector_mappings_raw_dxt1_inv_256[NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS][256]; - - static const etc1_to_dxt1_56_solution g_etc1_to_dxt_6[32 * 8 * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS * NUM_ETC1_TO_DXT1_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_dxt1_6.inc" - }; - - static const etc1_to_dxt1_56_solution g_etc1_to_dxt_5[32 * 8 * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS * NUM_ETC1_TO_DXT1_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_dxt1_5.inc" - }; -#endif // BASISD_SUPPORT_DXT1 - -#if BASISD_SUPPORT_DXT1 || BASISD_SUPPORT_UASTC - // First saw the idea for optimal BC1 single-color block encoding using lookup tables in ryg_dxt. - struct bc1_match_entry - { - uint8_t m_hi; - uint8_t m_lo; - }; - static bc1_match_entry g_bc1_match5_equals_1[256], g_bc1_match6_equals_1[256]; // selector 1, allow equals hi/lo - static bc1_match_entry g_bc1_match5_equals_0[256], g_bc1_match6_equals_0[256]; // selector 0, allow equals hi/lo - - static void prepare_bc1_single_color_table(bc1_match_entry* pTable, const uint8_t* pExpand, int size0, int size1, int sel) - { - for (int i = 0; i < 256; i++) - { - int lowest_e = 256; - for (int lo = 0; lo < size0; lo++) - { - for (int hi = 0; hi < size1; hi++) - { - const int lo_e = pExpand[lo], hi_e = pExpand[hi]; - int e; - - if (sel == 1) - { - // Selector 1 - e = basisu::iabs(((hi_e * 2 + lo_e) / 3) - i); - e += (basisu::iabs(hi_e - lo_e) * 3) / 100; - } - else - { - assert(sel == 0); - - // Selector 0 - e = basisu::iabs(hi_e - i); - } - - if (e < lowest_e) - { - pTable[i].m_hi = static_cast(hi); - pTable[i].m_lo = static_cast(lo); - - lowest_e = e; - } - - } // hi - } // lo - } - } -#endif - -#if BASISD_WRITE_NEW_DXT1_TABLES - static void create_etc1_to_dxt1_5_conversion_table() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_dxt1_5.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1_TO_DXT1_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1_to_dxt1_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1_to_dxt1_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 31; hi++) - { - for (uint32_t lo = 0; lo <= 31; lo++) - { - //if (lo == hi) continue; - - uint32_t colors[4]; - - colors[0] = (lo << 3) | (lo >> 2); - colors[3] = (hi << 3) | (hi >> 2); - - colors[1] = (colors[0] * 2 + colors[3]) / 3; - colors[2] = (colors[3] * 2 + colors[0]) / 3; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1_to_dxt1_selector_mappings[m][s]]; - - total_err += err * err; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - assert(best_err <= 0xFFFF); - - //table[g + inten * 32].m_solutions[sr][m].m_lo = static_cast(best_lo); - //table[g + inten * 32].m_solutions[sr][m].m_hi = static_cast(best_hi); - //table[g + inten * 32].m_solutions[sr][m].m_err = static_cast(best_err); - - //assert(best_lo != best_hi); - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); - } - - static void create_etc1_to_dxt1_6_conversion_table() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_dxt1_6.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1_TO_DXT1_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1_to_dxt1_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1_to_dxt1_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 63; hi++) - { - for (uint32_t lo = 0; lo <= 63; lo++) - { - //if (lo == hi) continue; - - uint32_t colors[4]; - - colors[0] = (lo << 2) | (lo >> 4); - colors[3] = (hi << 2) | (hi >> 4); - - colors[1] = (colors[0] * 2 + colors[3]) / 3; - colors[2] = (colors[3] * 2 + colors[0]) / 3; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1_to_dxt1_selector_mappings[m][s]]; - - total_err += err * err; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - assert(best_err <= 0xFFFF); - - //table[g + inten * 32].m_solutions[sr][m].m_lo = static_cast(best_lo); - //table[g + inten * 32].m_solutions[sr][m].m_hi = static_cast(best_hi); - //table[g + inten * 32].m_solutions[sr][m].m_err = static_cast(best_err); - - //assert(best_lo != best_hi); - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - - } // m - } // sr - } // g - } // inten - - fclose(pFile); - } -#endif - - -#if BASISD_SUPPORT_UASTC || BASISD_SUPPORT_ETC2_EAC_A8 || BASISD_SUPPORT_ETC2_EAC_RG11 - static const int8_t g_eac_modifier_table[16][8] = - { - { -3, -6, -9, -15, 2, 5, 8, 14 }, - { -3, -7, -10, -13, 2, 6, 9, 12 }, - { -2, -5, -8, -13, 1, 4, 7, 12 }, - { -2, -4, -6, -13, 1, 3, 5, 12 }, - { -3, -6, -8, -12, 2, 5, 7, 11 }, - { -3, -7, -9, -11, 2, 6, 8, 10 }, - { -4, -7, -8, -11, 3, 6, 7, 10 }, - { -3, -5, -8, -11, 2, 4, 7, 10 }, - - { -2, -6, -8, -10, 1, 5, 7, 9 }, - { -2, -5, -8, -10, 1, 4, 7, 9 }, - { -2, -4, -8, -10, 1, 3, 7, 9 }, - { -2, -5, -7, -10, 1, 4, 6, 9 }, - { -3, -4, -7, -10, 2, 3, 6, 9 }, - { -1, -2, -3, -10, 0, 1, 2, 9 }, // entry 13 - { -4, -6, -8, -9, 3, 5, 7, 8 }, - { -3, -5, -7, -9, 2, 4, 6, 8 } - }; - - // Used by ETC2 EAC A8 and ETC2 EAC R11/RG11. - struct eac_block - { - uint16_t m_base : 8; - - uint16_t m_table : 4; - uint16_t m_multiplier : 4; - - uint8_t m_selectors[6]; - - uint32_t get_selector(uint32_t x, uint32_t y) const - { - assert((x < 4) && (y < 4)); - - const uint32_t ofs = 45 - (y + x * 4) * 3; - - const uint64_t pixels = get_selector_bits(); - - return (pixels >> ofs) & 7; - } - - void set_selector(uint32_t x, uint32_t y, uint32_t s) - { - assert((x < 4) && (y < 4) && (s < 8)); - - const uint32_t ofs = 45 - (y + x * 4) * 3; - - uint64_t pixels = get_selector_bits(); - - pixels &= ~(7ULL << ofs); - pixels |= (static_cast(s) << ofs); - - set_selector_bits(pixels); - } - - uint64_t get_selector_bits() const - { - uint64_t pixels = ((uint64_t)m_selectors[0] << 40) | ((uint64_t)m_selectors[1] << 32) | - ((uint64_t)m_selectors[2] << 24) | - ((uint64_t)m_selectors[3] << 16) | ((uint64_t)m_selectors[4] << 8) | m_selectors[5]; - return pixels; - } - - void set_selector_bits(uint64_t pixels) - { - m_selectors[0] = (uint8_t)(pixels >> 40); - m_selectors[1] = (uint8_t)(pixels >> 32); - m_selectors[2] = (uint8_t)(pixels >> 24); - m_selectors[3] = (uint8_t)(pixels >> 16); - m_selectors[4] = (uint8_t)(pixels >> 8); - m_selectors[5] = (uint8_t)(pixels); - } - }; - -#endif // #if BASISD_SUPPORT_UASTC BASISD_SUPPORT_ETC2_EAC_A8 || BASISD_SUPPORT_ETC2_EAC_RG11 - -#if BASISD_SUPPORT_ETC2_EAC_A8 || BASISD_SUPPORT_ETC2_EAC_RG11 - static const dxt_selector_range s_etc2_eac_selector_ranges[] = - { - { 0, 3 }, - - { 1, 3 }, - { 0, 2 }, - - { 1, 2 }, - }; - - const uint32_t NUM_ETC2_EAC_SELECTOR_RANGES = sizeof(s_etc2_eac_selector_ranges) / sizeof(s_etc2_eac_selector_ranges[0]); - - struct etc1_g_to_eac_conversion - { - uint8_t m_base; - uint8_t m_table_mul; // mul*16+table - uint16_t m_trans; // translates ETC1 selectors to ETC2_EAC_A8 - }; -#endif // BASISD_SUPPORT_ETC2_EAC_A8 || BASISD_SUPPORT_ETC2_EAC_RG11 - -#if BASISD_SUPPORT_ETC2_EAC_A8 - -#if BASISD_WRITE_NEW_ETC2_EAC_A8_TABLES - struct pack_eac_a8_results - { - uint32_t m_base; - uint32_t m_table; - uint32_t m_multiplier; - basisu::vector m_selectors; - basisu::vector m_selectors_temp; - }; - - static uint64_t pack_eac_a8_exhaustive(pack_eac_a8_results& results, const uint8_t* pPixels, uint32_t num_pixels) - { - results.m_selectors.resize(num_pixels); - results.m_selectors_temp.resize(num_pixels); - - uint64_t best_err = UINT64_MAX; - - for (uint32_t base_color = 0; base_color < 256; base_color++) - { - for (uint32_t multiplier = 1; multiplier < 16; multiplier++) - { - for (uint32_t table = 0; table < 16; table++) - { - uint64_t total_err = 0; - - for (uint32_t i = 0; i < num_pixels; i++) - { - const int a = pPixels[i]; - - uint32_t best_s_err = UINT32_MAX; - uint32_t best_s = 0; - for (uint32_t s = 0; s < 8; s++) - { - int v = (int)multiplier * g_eac_modifier_table[table][s] + (int)base_color; - if (v < 0) - v = 0; - else if (v > 255) - v = 255; - - uint32_t err = abs(a - v); - if (err < best_s_err) - { - best_s_err = err; - best_s = s; - } - } - - results.m_selectors_temp[i] = static_cast(best_s); - - total_err += best_s_err * best_s_err; - if (total_err >= best_err) - break; - } - - if (total_err < best_err) - { - best_err = total_err; - results.m_base = base_color; - results.m_multiplier = multiplier; - results.m_table = table; - results.m_selectors.swap(results.m_selectors_temp); - } - - } // table - - } // multiplier - - } // base_color - - return best_err; - } -#endif // BASISD_WRITE_NEW_ETC2_EAC_A8_TABLES - - static -#if !BASISD_WRITE_NEW_ETC2_EAC_A8_TABLES - const -#endif - etc1_g_to_eac_conversion s_etc1_g_to_etc2_a8[32 * 8][NUM_ETC2_EAC_SELECTOR_RANGES] = - { - { { 0,1,3328 },{ 0,1,3328 },{ 0,1,256 },{ 0,1,256 } }, - { { 0,226,3936 },{ 0,226,3936 },{ 0,81,488 },{ 0,81,488 } }, - { { 6,178,4012 },{ 6,178,4008 },{ 0,146,501 },{ 0,130,496 } }, - { { 14,178,4012 },{ 14,178,4008 },{ 8,146,501 },{ 6,82,496 } }, - { { 23,178,4012 },{ 23,178,4008 },{ 17,146,501 },{ 3,228,496 } }, - { { 31,178,4012 },{ 31,178,4008 },{ 25,146,501 },{ 11,228,496 } }, - { { 39,178,4012 },{ 39,178,4008 },{ 33,146,501 },{ 19,228,496 } }, - { { 47,178,4012 },{ 47,178,4008 },{ 41,146,501 },{ 27,228,496 } }, - { { 56,178,4012 },{ 56,178,4008 },{ 50,146,501 },{ 36,228,496 } }, - { { 64,178,4012 },{ 64,178,4008 },{ 58,146,501 },{ 44,228,496 } }, - { { 72,178,4012 },{ 72,178,4008 },{ 66,146,501 },{ 52,228,496 } }, - { { 80,178,4012 },{ 80,178,4008 },{ 74,146,501 },{ 60,228,496 } }, - { { 89,178,4012 },{ 89,178,4008 },{ 83,146,501 },{ 69,228,496 } }, - { { 97,178,4012 },{ 97,178,4008 },{ 91,146,501 },{ 77,228,496 } }, - { { 105,178,4012 },{ 105,178,4008 },{ 99,146,501 },{ 85,228,496 } }, - { { 113,178,4012 },{ 113,178,4008 },{ 107,146,501 },{ 93,228,496 } }, - { { 122,178,4012 },{ 122,178,4008 },{ 116,146,501 },{ 102,228,496 } }, - { { 130,178,4012 },{ 130,178,4008 },{ 124,146,501 },{ 110,228,496 } }, - { { 138,178,4012 },{ 138,178,4008 },{ 132,146,501 },{ 118,228,496 } }, - { { 146,178,4012 },{ 146,178,4008 },{ 140,146,501 },{ 126,228,496 } }, - { { 155,178,4012 },{ 155,178,4008 },{ 149,146,501 },{ 135,228,496 } }, - { { 163,178,4012 },{ 163,178,4008 },{ 157,146,501 },{ 143,228,496 } }, - { { 171,178,4012 },{ 171,178,4008 },{ 165,146,501 },{ 151,228,496 } }, - { { 179,178,4012 },{ 179,178,4008 },{ 173,146,501 },{ 159,228,496 } }, - { { 188,178,4012 },{ 188,178,4008 },{ 182,146,501 },{ 168,228,496 } }, - { { 196,178,4012 },{ 196,178,4008 },{ 190,146,501 },{ 176,228,496 } }, - { { 204,178,4012 },{ 204,178,4008 },{ 198,146,501 },{ 184,228,496 } }, - { { 212,178,4012 },{ 212,178,4008 },{ 206,146,501 },{ 192,228,496 } }, - { { 221,178,4012 },{ 221,178,4008 },{ 215,146,501 },{ 201,228,496 } }, - { { 229,178,4012 },{ 229,178,4008 },{ 223,146,501 },{ 209,228,496 } }, - { { 235,66,4012 },{ 221,100,4008 },{ 231,146,501 },{ 217,228,496 } }, - { { 211,102,4085 },{ 118,31,4080 },{ 211,102,501 },{ 118,31,496 } }, - { { 1,2,3328 },{ 1,2,3328 },{ 0,1,320 },{ 0,1,320 } }, - { { 7,162,3905 },{ 7,162,3904 },{ 1,17,480 },{ 1,17,480 } }, - { { 15,162,3906 },{ 15,162,3904 },{ 1,117,352 },{ 1,117,352 } }, - { { 23,162,3906 },{ 23,162,3904 },{ 5,34,500 },{ 4,53,424 } }, - { { 32,162,3906 },{ 32,162,3904 },{ 14,34,500 },{ 3,69,424 } }, - { { 40,162,3906 },{ 40,162,3904 },{ 22,34,500 },{ 1,133,496 } }, - { { 48,162,3906 },{ 48,162,3904 },{ 30,34,500 },{ 4,85,496 } }, - { { 56,162,3906 },{ 56,162,3904 },{ 38,34,500 },{ 12,85,496 } }, - { { 65,162,3906 },{ 65,162,3904 },{ 47,34,500 },{ 1,106,424 } }, - { { 73,162,3906 },{ 73,162,3904 },{ 55,34,500 },{ 9,106,424 } }, - { { 81,162,3906 },{ 81,162,3904 },{ 63,34,500 },{ 7,234,496 } }, - { { 89,162,3906 },{ 89,162,3904 },{ 71,34,500 },{ 15,234,496 } }, - { { 98,162,3906 },{ 98,162,3904 },{ 80,34,500 },{ 24,234,496 } }, - { { 106,162,3906 },{ 106,162,3904 },{ 88,34,500 },{ 32,234,496 } }, - { { 114,162,3906 },{ 114,162,3904 },{ 96,34,500 },{ 40,234,496 } }, - { { 122,162,3906 },{ 122,162,3904 },{ 104,34,500 },{ 48,234,496 } }, - { { 131,162,3906 },{ 131,162,3904 },{ 113,34,500 },{ 57,234,496 } }, - { { 139,162,3906 },{ 139,162,3904 },{ 121,34,500 },{ 65,234,496 } }, - { { 147,162,3906 },{ 147,162,3904 },{ 129,34,500 },{ 73,234,496 } }, - { { 155,162,3906 },{ 155,162,3904 },{ 137,34,500 },{ 81,234,496 } }, - { { 164,162,3906 },{ 164,162,3904 },{ 146,34,500 },{ 90,234,496 } }, - { { 172,162,3906 },{ 172,162,3904 },{ 154,34,500 },{ 98,234,496 } }, - { { 180,162,3906 },{ 180,162,3904 },{ 162,34,500 },{ 106,234,496 } }, - { { 188,162,3906 },{ 188,162,3904 },{ 170,34,500 },{ 114,234,496 } }, - { { 197,162,3906 },{ 197,162,3904 },{ 179,34,500 },{ 123,234,496 } }, - { { 205,162,3906 },{ 205,162,3904 },{ 187,34,500 },{ 131,234,496 } }, - { { 213,162,3906 },{ 213,162,3904 },{ 195,34,500 },{ 139,234,496 } }, - { { 221,162,3906 },{ 221,162,3904 },{ 203,34,500 },{ 147,234,496 } }, - { { 230,162,3906 },{ 230,162,3904 },{ 212,34,500 },{ 156,234,496 } }, - { { 238,162,3906 },{ 174,106,4008 },{ 220,34,500 },{ 164,234,496 } }, - { { 240,178,4001 },{ 182,106,4008 },{ 228,34,500 },{ 172,234,496 } }, - { { 166,108,4085 },{ 115,31,4080 },{ 166,108,501 },{ 115,31,496 } }, - { { 1,68,3328 },{ 1,68,3328 },{ 0,17,384 },{ 0,17,384 } }, - { { 1,148,3904 },{ 1,148,3904 },{ 1,2,384 },{ 1,2,384 } }, - { { 21,18,3851 },{ 21,18,3848 },{ 1,50,488 },{ 1,50,488 } }, - { { 27,195,3851 },{ 29,18,3848 },{ 0,67,488 },{ 0,67,488 } }, - { { 34,195,3907 },{ 38,18,3848 },{ 20,66,482 },{ 0,3,496 } }, - { { 42,195,3907 },{ 46,18,3848 },{ 28,66,482 },{ 2,6,424 } }, - { { 50,195,3907 },{ 54,18,3848 },{ 36,66,482 },{ 4,22,424 } }, - { { 58,195,3907 },{ 62,18,3848 },{ 44,66,482 },{ 3,73,424 } }, - { { 67,195,3907 },{ 71,18,3848 },{ 53,66,482 },{ 3,22,496 } }, - { { 75,195,3907 },{ 79,18,3848 },{ 61,66,482 },{ 2,137,496 } }, - { { 83,195,3907 },{ 87,18,3848 },{ 69,66,482 },{ 1,89,496 } }, - { { 91,195,3907 },{ 95,18,3848 },{ 77,66,482 },{ 9,89,496 } }, - { { 100,195,3907 },{ 104,18,3848 },{ 86,66,482 },{ 18,89,496 } }, - { { 108,195,3907 },{ 112,18,3848 },{ 94,66,482 },{ 26,89,496 } }, - { { 116,195,3907 },{ 120,18,3848 },{ 102,66,482 },{ 34,89,496 } }, - { { 124,195,3907 },{ 128,18,3848 },{ 110,66,482 },{ 42,89,496 } }, - { { 133,195,3907 },{ 137,18,3848 },{ 119,66,482 },{ 51,89,496 } }, - { { 141,195,3907 },{ 145,18,3848 },{ 127,66,482 },{ 59,89,496 } }, - { { 149,195,3907 },{ 153,18,3848 },{ 135,66,482 },{ 67,89,496 } }, - { { 157,195,3907 },{ 161,18,3848 },{ 143,66,482 },{ 75,89,496 } }, - { { 166,195,3907 },{ 170,18,3848 },{ 152,66,482 },{ 84,89,496 } }, - { { 174,195,3907 },{ 178,18,3848 },{ 160,66,482 },{ 92,89,496 } }, - { { 182,195,3907 },{ 186,18,3848 },{ 168,66,482 },{ 100,89,496 } }, - { { 190,195,3907 },{ 194,18,3848 },{ 176,66,482 },{ 108,89,496 } }, - { { 199,195,3907 },{ 203,18,3848 },{ 185,66,482 },{ 117,89,496 } }, - { { 207,195,3907 },{ 211,18,3848 },{ 193,66,482 },{ 125,89,496 } }, - { { 215,195,3907 },{ 219,18,3848 },{ 201,66,482 },{ 133,89,496 } }, - { { 223,195,3907 },{ 227,18,3848 },{ 209,66,482 },{ 141,89,496 } }, - { { 231,195,3907 },{ 168,89,4008 },{ 218,66,482 },{ 150,89,496 } }, - { { 236,18,3907 },{ 176,89,4008 },{ 226,66,482 },{ 158,89,496 } }, - { { 158,90,4085 },{ 103,31,4080 },{ 158,90,501 },{ 103,31,496 } }, - { { 166,90,4085 },{ 111,31,4080 },{ 166,90,501 },{ 111,31,496 } }, - { { 0,70,3328 },{ 0,70,3328 },{ 0,45,256 },{ 0,45,256 } }, - { { 0,117,3904 },{ 0,117,3904 },{ 0,35,384 },{ 0,35,384 } }, - { { 13,165,3905 },{ 13,165,3904 },{ 3,221,416 },{ 3,221,416 } }, - { { 21,165,3906 },{ 21,165,3904 },{ 11,221,416 },{ 11,221,416 } }, - { { 30,165,3906 },{ 30,165,3904 },{ 7,61,352 },{ 7,61,352 } }, - { { 38,165,3906 },{ 38,165,3904 },{ 2,125,352 },{ 2,125,352 } }, - { { 46,165,3906 },{ 46,165,3904 },{ 2,37,500 },{ 10,125,352 } }, - { { 54,165,3906 },{ 54,165,3904 },{ 10,37,500 },{ 5,61,424 } }, - { { 63,165,3906 },{ 63,165,3904 },{ 19,37,500 },{ 1,189,424 } }, - { { 4,254,4012 },{ 71,165,3904 },{ 27,37,500 },{ 9,189,424 } }, - { { 12,254,4012 },{ 79,165,3904 },{ 35,37,500 },{ 4,77,424 } }, - { { 20,254,4012 },{ 87,165,3904 },{ 43,37,500 },{ 12,77,424 } }, - { { 29,254,4012 },{ 96,165,3904 },{ 52,37,500 },{ 8,93,424 } }, - { { 37,254,4012 },{ 104,165,3904 },{ 60,37,500 },{ 3,141,496 } }, - { { 45,254,4012 },{ 112,165,3904 },{ 68,37,500 },{ 11,141,496 } }, - { { 53,254,4012 },{ 120,165,3904 },{ 76,37,500 },{ 6,93,496 } }, - { { 62,254,4012 },{ 129,165,3904 },{ 85,37,500 },{ 15,93,496 } }, - { { 70,254,4012 },{ 137,165,3904 },{ 93,37,500 },{ 23,93,496 } }, - { { 78,254,4012 },{ 145,165,3904 },{ 101,37,500 },{ 31,93,496 } }, - { { 86,254,4012 },{ 153,165,3904 },{ 109,37,500 },{ 39,93,496 } }, - { { 95,254,4012 },{ 162,165,3904 },{ 118,37,500 },{ 48,93,496 } }, - { { 103,254,4012 },{ 170,165,3904 },{ 126,37,500 },{ 56,93,496 } }, - { { 111,254,4012 },{ 178,165,3904 },{ 134,37,500 },{ 64,93,496 } }, - { { 119,254,4012 },{ 186,165,3904 },{ 142,37,500 },{ 72,93,496 } }, - { { 128,254,4012 },{ 195,165,3904 },{ 151,37,500 },{ 81,93,496 } }, - { { 136,254,4012 },{ 203,165,3904 },{ 159,37,500 },{ 89,93,496 } }, - { { 212,165,3906 },{ 136,77,4008 },{ 167,37,500 },{ 97,93,496 } }, - { { 220,165,3394 },{ 131,93,4008 },{ 175,37,500 },{ 105,93,496 } }, - { { 214,181,4001 },{ 140,93,4008 },{ 184,37,500 },{ 114,93,496 } }, - { { 222,181,4001 },{ 148,93,4008 },{ 192,37,500 },{ 122,93,496 } }, - { { 114,95,4085 },{ 99,31,4080 },{ 114,95,501 },{ 99,31,496 } }, - { { 122,95,4085 },{ 107,31,4080 },{ 122,95,501 },{ 107,31,496 } }, - { { 0,102,3840 },{ 0,102,3840 },{ 0,18,384 },{ 0,18,384 } }, - { { 5,167,3904 },{ 5,167,3904 },{ 0,13,256 },{ 0,13,256 } }, - { { 4,54,3968 },{ 4,54,3968 },{ 1,67,448 },{ 1,67,448 } }, - { { 30,198,3850 },{ 30,198,3848 },{ 0,3,480 },{ 0,3,480 } }, - { { 39,198,3850 },{ 39,198,3848 },{ 3,52,488 },{ 3,52,488 } }, - { { 47,198,3851 },{ 47,198,3848 },{ 3,4,488 },{ 3,4,488 } }, - { { 55,198,3851 },{ 55,198,3848 },{ 1,70,488 },{ 1,70,488 } }, - { { 54,167,3906 },{ 63,198,3848 },{ 3,22,488 },{ 3,22,488 } }, - { { 62,167,3906 },{ 72,198,3848 },{ 24,118,488 },{ 0,6,496 } }, - { { 70,167,3906 },{ 80,198,3848 },{ 32,118,488 },{ 2,89,488 } }, - { { 78,167,3906 },{ 88,198,3848 },{ 40,118,488 },{ 1,73,496 } }, - { { 86,167,3906 },{ 96,198,3848 },{ 48,118,488 },{ 0,28,424 } }, - { { 95,167,3906 },{ 105,198,3848 },{ 57,118,488 },{ 9,28,424 } }, - { { 103,167,3906 },{ 113,198,3848 },{ 65,118,488 },{ 5,108,496 } }, - { { 111,167,3906 },{ 121,198,3848 },{ 73,118,488 },{ 13,108,496 } }, - { { 119,167,3906 },{ 129,198,3848 },{ 81,118,488 },{ 21,108,496 } }, - { { 128,167,3906 },{ 138,198,3848 },{ 90,118,488 },{ 6,28,496 } }, - { { 136,167,3906 },{ 146,198,3848 },{ 98,118,488 },{ 14,28,496 } }, - { { 144,167,3906 },{ 154,198,3848 },{ 106,118,488 },{ 22,28,496 } }, - { { 152,167,3906 },{ 162,198,3848 },{ 114,118,488 },{ 30,28,496 } }, - { { 161,167,3906 },{ 171,198,3848 },{ 123,118,488 },{ 39,28,496 } }, - { { 169,167,3906 },{ 179,198,3848 },{ 131,118,488 },{ 47,28,496 } }, - { { 177,167,3906 },{ 187,198,3848 },{ 139,118,488 },{ 55,28,496 } }, - { { 185,167,3906 },{ 195,198,3848 },{ 147,118,488 },{ 63,28,496 } }, - { { 194,167,3906 },{ 120,12,4008 },{ 156,118,488 },{ 72,28,496 } }, - { { 206,198,3907 },{ 116,28,4008 },{ 164,118,488 },{ 80,28,496 } }, - { { 214,198,3907 },{ 124,28,4008 },{ 172,118,488 },{ 88,28,496 } }, - { { 222,198,3395 },{ 132,28,4008 },{ 180,118,488 },{ 96,28,496 } }, - { { 207,134,4001 },{ 141,28,4008 },{ 189,118,488 },{ 105,28,496 } }, - { { 95,30,4085 },{ 86,31,4080 },{ 95,30,501 },{ 86,31,496 } }, - { { 103,30,4085 },{ 94,31,4080 },{ 103,30,501 },{ 94,31,496 } }, - { { 111,30,4085 },{ 102,31,4080 },{ 111,30,501 },{ 102,31,496 } }, - { { 0,104,3840 },{ 0,104,3840 },{ 0,18,448 },{ 0,18,448 } }, - { { 4,39,3904 },{ 4,39,3904 },{ 0,4,384 },{ 0,4,384 } }, - { { 0,56,3968 },{ 0,56,3968 },{ 0,84,448 },{ 0,84,448 } }, - { { 6,110,3328 },{ 6,110,3328 },{ 0,20,448 },{ 0,20,448 } }, - { { 41,200,3850 },{ 41,200,3848 },{ 1,4,480 },{ 1,4,480 } }, - { { 49,200,3850 },{ 49,200,3848 },{ 1,8,416 },{ 1,8,416 } }, - { { 57,200,3851 },{ 57,200,3848 },{ 1,38,488 },{ 1,38,488 } }, - { { 65,200,3851 },{ 65,200,3848 },{ 1,120,488 },{ 1,120,488 } }, - { { 74,200,3851 },{ 74,200,3848 },{ 2,72,488 },{ 2,72,488 } }, - { { 69,6,3907 },{ 82,200,3848 },{ 2,24,488 },{ 2,24,488 } }, - { { 77,6,3907 },{ 90,200,3848 },{ 26,120,488 },{ 10,24,488 } }, - { { 97,63,3330 },{ 98,200,3848 },{ 34,120,488 },{ 2,8,496 } }, - { { 106,63,3330 },{ 107,200,3848 },{ 43,120,488 },{ 3,92,488 } }, - { { 114,63,3330 },{ 115,200,3848 },{ 51,120,488 },{ 11,92,488 } }, - { { 122,63,3330 },{ 123,200,3848 },{ 59,120,488 },{ 7,76,496 } }, - { { 130,63,3330 },{ 131,200,3848 },{ 67,120,488 },{ 15,76,496 } }, - { { 139,63,3330 },{ 140,200,3848 },{ 76,120,488 },{ 24,76,496 } }, - { { 147,63,3330 },{ 148,200,3848 },{ 84,120,488 },{ 32,76,496 } }, - { { 155,63,3330 },{ 156,200,3848 },{ 92,120,488 },{ 40,76,496 } }, - { { 163,63,3330 },{ 164,200,3848 },{ 100,120,488 },{ 48,76,496 } }, - { { 172,63,3330 },{ 173,200,3848 },{ 109,120,488 },{ 57,76,496 } }, - { { 184,6,3851 },{ 181,200,3848 },{ 117,120,488 },{ 65,76,496 } }, - { { 192,6,3851 },{ 133,28,3936 },{ 125,120,488 },{ 73,76,496 } }, - { { 189,200,3907 },{ 141,28,3936 },{ 133,120,488 },{ 81,76,496 } }, - { { 198,200,3907 },{ 138,108,4000 },{ 142,120,488 },{ 90,76,496 } }, - { { 206,200,3907 },{ 146,108,4000 },{ 150,120,488 },{ 98,76,496 } }, - { { 214,200,3395 },{ 154,108,4000 },{ 158,120,488 },{ 106,76,496 } }, - { { 190,136,4001 },{ 162,108,4000 },{ 166,120,488 },{ 114,76,496 } }, - { { 123,30,4076 },{ 87,15,4080 },{ 123,30,492 },{ 87,15,496 } }, - { { 117,110,4084 },{ 80,31,4080 },{ 117,110,500 },{ 80,31,496 } }, - { { 125,110,4084 },{ 88,31,4080 },{ 125,110,500 },{ 88,31,496 } }, - { { 133,110,4084 },{ 96,31,4080 },{ 133,110,500 },{ 96,31,496 } }, - { { 9,56,3904 },{ 9,56,3904 },{ 0,67,448 },{ 0,67,448 } }, - { { 1,8,3904 },{ 1,8,3904 },{ 1,84,448 },{ 1,84,448 } }, - { { 1,124,3904 },{ 1,124,3904 },{ 0,39,384 },{ 0,39,384 } }, - { { 9,124,3904 },{ 9,124,3904 },{ 1,4,448 },{ 1,4,448 } }, - { { 6,76,3904 },{ 6,76,3904 },{ 0,70,448 },{ 0,70,448 } }, - { { 62,6,3859 },{ 62,6,3856 },{ 2,38,480 },{ 2,38,480 } }, - { { 70,6,3859 },{ 70,6,3856 },{ 5,43,416 },{ 5,43,416 } }, - { { 78,6,3859 },{ 78,6,3856 },{ 2,11,416 },{ 2,11,416 } }, - { { 87,6,3859 },{ 87,6,3856 },{ 0,171,488 },{ 0,171,488 } }, - { { 67,8,3906 },{ 95,6,3856 },{ 8,171,488 },{ 8,171,488 } }, - { { 75,8,3907 },{ 103,6,3856 },{ 5,123,488 },{ 5,123,488 } }, - { { 83,8,3907 },{ 111,6,3856 },{ 2,75,488 },{ 2,75,488 } }, - { { 92,8,3907 },{ 120,6,3856 },{ 0,27,488 },{ 0,27,488 } }, - { { 100,8,3907 },{ 128,6,3856 },{ 8,27,488 },{ 8,27,488 } }, - { { 120,106,3843 },{ 136,6,3856 },{ 100,6,387 },{ 16,27,488 } }, - { { 128,106,3843 },{ 144,6,3856 },{ 108,6,387 },{ 2,11,496 } }, - { { 137,106,3843 },{ 153,6,3856 },{ 117,6,387 },{ 11,11,496 } }, - { { 145,106,3843 },{ 161,6,3856 },{ 125,6,387 },{ 19,11,496 } }, - { { 163,8,3851 },{ 137,43,3904 },{ 133,6,387 },{ 27,11,496 } }, - { { 171,8,3851 },{ 101,11,4000 },{ 141,6,387 },{ 35,11,496 } }, - { { 180,8,3851 },{ 110,11,4000 },{ 150,6,387 },{ 44,11,496 } }, - { { 188,8,3851 },{ 118,11,4000 },{ 158,6,387 },{ 52,11,496 } }, - { { 172,72,3907 },{ 126,11,4000 },{ 166,6,387 },{ 60,11,496 } }, - { { 174,6,3971 },{ 134,11,4000 },{ 174,6,387 },{ 68,11,496 } }, - { { 183,6,3971 },{ 143,11,4000 },{ 183,6,387 },{ 77,11,496 } }, - { { 191,6,3971 },{ 151,11,4000 },{ 191,6,387 },{ 85,11,496 } }, - { { 199,6,3971 },{ 159,11,4000 },{ 199,6,387 },{ 93,11,496 } }, - { { 92,12,4084 },{ 69,15,4080 },{ 92,12,500 },{ 69,15,496 } }, - { { 101,12,4084 },{ 78,15,4080 },{ 101,12,500 },{ 78,15,496 } }, - { { 109,12,4084 },{ 86,15,4080 },{ 109,12,500 },{ 86,15,496 } }, - { { 117,12,4084 },{ 79,31,4080 },{ 117,12,500 },{ 79,31,496 } }, - { { 125,12,4084 },{ 87,31,4080 },{ 125,12,500 },{ 87,31,496 } }, - { { 71,8,3602 },{ 71,8,3600 },{ 2,21,384 },{ 2,21,384 } }, - { { 79,8,3611 },{ 79,8,3608 },{ 0,69,448 },{ 0,69,448 } }, - { { 87,8,3611 },{ 87,8,3608 },{ 0,23,384 },{ 0,23,384 } }, - { { 95,8,3611 },{ 95,8,3608 },{ 1,5,448 },{ 1,5,448 } }, - { { 104,8,3611 },{ 104,8,3608 },{ 0,88,448 },{ 0,88,448 } }, - { { 112,8,3611 },{ 112,8,3608 },{ 0,72,448 },{ 0,72,448 } }, - { { 120,8,3611 },{ 121,8,3608 },{ 36,21,458 },{ 36,21,456 } }, - { { 133,47,3091 },{ 129,8,3608 },{ 44,21,458 },{ 44,21,456 } }, - { { 142,47,3091 },{ 138,8,3608 },{ 53,21,459 },{ 53,21,456 } }, - { { 98,12,3850 },{ 98,12,3848 },{ 61,21,459 },{ 61,21,456 } }, - { { 106,12,3850 },{ 106,12,3848 },{ 10,92,480 },{ 69,21,456 } }, - { { 114,12,3851 },{ 114,12,3848 },{ 18,92,480 },{ 77,21,456 } }, - { { 87,12,3906 },{ 87,12,3904 },{ 3,44,488 },{ 86,21,456 } }, - { { 95,12,3906 },{ 95,12,3904 },{ 11,44,488 },{ 94,21,456 } }, - { { 103,12,3906 },{ 103,12,3904 },{ 19,44,488 },{ 102,21,456 } }, - { { 111,12,3907 },{ 111,12,3904 },{ 27,44,489 },{ 110,21,456 } }, - { { 120,12,3907 },{ 120,12,3904 },{ 36,44,489 },{ 119,21,456 } }, - { { 128,12,3907 },{ 128,12,3904 },{ 44,44,489 },{ 127,21,456 } }, - { { 136,12,3907 },{ 136,12,3904 },{ 52,44,489 },{ 135,21,456 } }, - { { 144,12,3907 },{ 144,12,3904 },{ 60,44,489 },{ 143,21,456 } }, - { { 153,12,3907 },{ 153,12,3904 },{ 69,44,490 },{ 152,21,456 } }, - { { 161,12,3395 },{ 149,188,3968 },{ 77,44,490 },{ 160,21,456 } }, - { { 169,12,3395 },{ 198,21,3928 },{ 85,44,490 },{ 168,21,456 } }, - { { 113,95,4001 },{ 201,69,3992 },{ 125,8,483 },{ 176,21,456 } }, - { { 122,95,4001 },{ 200,21,3984 },{ 134,8,483 },{ 185,21,456 } }, - { { 142,8,4067 },{ 208,21,3984 },{ 142,8,483 },{ 193,21,456 } }, - { { 151,8,4067 },{ 47,15,4080 },{ 151,8,483 },{ 47,15,496 } }, - { { 159,8,4067 },{ 55,15,4080 },{ 159,8,483 },{ 55,15,496 } }, - { { 168,8,4067 },{ 64,15,4080 },{ 168,8,483 },{ 64,15,496 } }, - { { 160,40,4075 },{ 72,15,4080 },{ 160,40,491 },{ 72,15,496 } }, - { { 168,40,4075 },{ 80,15,4080 },{ 168,40,491 },{ 80,15,496 } }, - { { 144,8,4082 },{ 88,15,4080 },{ 144,8,498 },{ 88,15,496 } } - }; -#endif // BASISD_SUPPORT_ETC2_EAC_A8 - -#if BASISD_WRITE_NEW_ETC2_EAC_A8_TABLES - static void create_etc2_eac_a8_conversion_table() - { - FILE* pFile = fopen("basisu_decoder_tables_etc2_eac_a8.inc", "w"); - - for (uint32_t inten = 0; inten < 8; inten++) - { - for (uint32_t base = 0; base < 32; base++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(base, base, base, 255), false), inten); - - fprintf(pFile, "{"); - - for (uint32_t sel_range = 0; sel_range < NUM_ETC2_EAC_SELECTOR_RANGES; sel_range++) - { - const uint32_t low_selector = s_etc2_eac_selector_ranges[sel_range].m_low; - const uint32_t high_selector = s_etc2_eac_selector_ranges[sel_range].m_high; - - // We have a ETC1 base color and intensity, and a used selector range from low_selector-high_selector. - // Now find the best ETC2 EAC A8 base/table/multiplier that fits these colors. - - uint8_t pixels[4]; - uint32_t num_pixels = 0; - for (uint32_t s = low_selector; s <= high_selector; s++) - pixels[num_pixels++] = block_colors[s].g; - - pack_eac_a8_results pack_results; - pack_eac_a8_exhaustive(pack_results, pixels, num_pixels); - - etc1_g_to_eac_conversion& c = s_etc1_g_to_etc2_a8[base + inten * 32][sel_range]; - - c.m_base = pack_results.m_base; - c.m_table_mul = pack_results.m_table * 16 + pack_results.m_multiplier; - c.m_trans = 0; - - for (uint32_t s = 0; s < 4; s++) - { - if ((s < low_selector) || (s > high_selector)) - continue; - - uint32_t etc2_selector = pack_results.m_selectors[s - low_selector]; - - c.m_trans |= (etc2_selector << (s * 3)); - } - - fprintf(pFile, "{%u,%u,%u}", c.m_base, c.m_table_mul, c.m_trans); - if (sel_range < (NUM_ETC2_EAC_SELECTOR_RANGES - 1)) - fprintf(pFile, ","); - } - - fprintf(pFile, "},\n"); - } - } - - fclose(pFile); - } -#endif - -#if BASISD_WRITE_NEW_ETC2_EAC_R11_TABLES - struct pack_eac_r11_results - { - uint32_t m_base; - uint32_t m_table; - uint32_t m_multiplier; - basisu::vector m_selectors; - basisu::vector m_selectors_temp; - }; - - static uint64_t pack_eac_r11_exhaustive(pack_eac_r11_results& results, const uint8_t* pPixels, uint32_t num_pixels) - { - results.m_selectors.resize(num_pixels); - results.m_selectors_temp.resize(num_pixels); - - uint64_t best_err = UINT64_MAX; - - for (uint32_t base_color = 0; base_color < 256; base_color++) - { - for (uint32_t multiplier = 0; multiplier < 16; multiplier++) - { - for (uint32_t table = 0; table < 16; table++) - { - uint64_t total_err = 0; - - for (uint32_t i = 0; i < num_pixels; i++) - { - // Convert 8-bit input to 11-bits - const int a = (pPixels[i] * 2047 + 128) / 255; - - uint32_t best_s_err = UINT32_MAX; - uint32_t best_s = 0; - for (uint32_t s = 0; s < 8; s++) - { - int v = (int)(multiplier ? (multiplier * 8) : 1) * g_eac_modifier_table[table][s] + (int)base_color * 8 + 4; - if (v < 0) - v = 0; - else if (v > 2047) - v = 2047; - - uint32_t err = abs(a - v); - if (err < best_s_err) - { - best_s_err = err; - best_s = s; - } - } - - results.m_selectors_temp[i] = static_cast(best_s); - - total_err += best_s_err * best_s_err; - if (total_err >= best_err) - break; - } - - if (total_err < best_err) - { - best_err = total_err; - results.m_base = base_color; - results.m_multiplier = multiplier; - results.m_table = table; - results.m_selectors.swap(results.m_selectors_temp); - } - - } // table - - } // multiplier - - } // base_color - - return best_err; - } - - static void create_etc2_eac_r11_conversion_table() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_decoder_tables_etc2_eac_r11.inc", "w"); - - for (uint32_t inten = 0; inten < 8; inten++) - { - for (uint32_t base = 0; base < 32; base++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(base, base, base, 255), false), inten); - - fprintf(pFile, "{"); - - for (uint32_t sel_range = 0; sel_range < NUM_ETC2_EAC_SELECTOR_RANGES; sel_range++) - { - const uint32_t low_selector = s_etc2_eac_selector_ranges[sel_range].m_low; - const uint32_t high_selector = s_etc2_eac_selector_ranges[sel_range].m_high; - - // We have a ETC1 base color and intensity, and a used selector range from low_selector-high_selector. - // Now find the best ETC2 EAC R11 base/table/multiplier that fits these colors. - - uint8_t pixels[4]; - uint32_t num_pixels = 0; - for (uint32_t s = low_selector; s <= high_selector; s++) - pixels[num_pixels++] = block_colors[s].g; - - pack_eac_r11_results pack_results; - pack_eac_r11_exhaustive(pack_results, pixels, num_pixels); - - etc1_g_to_eac_conversion c; - - c.m_base = (uint8_t)pack_results.m_base; - c.m_table_mul = (uint8_t)(pack_results.m_table * 16 + pack_results.m_multiplier); - c.m_trans = 0; - - for (uint32_t s = 0; s < 4; s++) - { - if ((s < low_selector) || (s > high_selector)) - continue; - - uint32_t etc2_selector = pack_results.m_selectors[s - low_selector]; - - c.m_trans |= (etc2_selector << (s * 3)); - } - - fprintf(pFile, "{%u,%u,%u}", c.m_base, c.m_table_mul, c.m_trans); - if (sel_range < (NUM_ETC2_EAC_SELECTOR_RANGES - 1)) - fprintf(pFile, ","); - } - - fprintf(pFile, "},\n"); - } - } - - fclose(pFile); - } -#endif // BASISD_WRITE_NEW_ETC2_EAC_R11_TABLES - -#if BASISD_WRITE_NEW_ASTC_TABLES - static void create_etc1_to_astc_conversion_table_0_47(); - static void create_etc1_to_astc_conversion_table_0_255(); -#endif - -#if BASISD_SUPPORT_ASTC - static void transcoder_init_astc(); -#endif - -#if BASISD_WRITE_NEW_BC7_MODE5_TABLES - static void create_etc1_to_bc7_m5_color_conversion_table(); - static void create_etc1_to_bc7_m5_alpha_conversion_table(); -#endif - -#if BASISD_SUPPORT_BC7_MODE5 - static void transcoder_init_bc7_mode5(); -#endif - -#if BASISD_WRITE_NEW_ATC_TABLES - static void create_etc1s_to_atc_conversion_tables(); -#endif - -#if BASISD_SUPPORT_ATC - static void transcoder_init_atc(); -#endif - -#if BASISD_SUPPORT_PVRTC2 - static void transcoder_init_pvrtc2(); -#endif - -#if BASISD_SUPPORT_UASTC - void uastc_init(); -#endif - - static bool g_transcoder_initialized; - - // Library global initialization. Requires ~9 milliseconds when compiled and executed natively on a Core i7 2.2 GHz. - // If this is too slow, these computed tables can easilky be moved to be compiled in. - void basisu_transcoder_init() - { - if (g_transcoder_initialized) - { - BASISU_DEVEL_ERROR("basisu_transcoder::basisu_transcoder_init: Called more than once\n"); - return; - } - - BASISU_DEVEL_ERROR("basisu_transcoder::basisu_transcoder_init: Initializing (this is not an error)\n"); - -#if BASISD_SUPPORT_UASTC - uastc_init(); -#endif - -#if BASISD_SUPPORT_ASTC - transcoder_init_astc(); -#endif - -#if BASISD_WRITE_NEW_ASTC_TABLES - create_etc1_to_astc_conversion_table_0_47(); - create_etc1_to_astc_conversion_table_0_255(); - exit(0); -#endif - -#if BASISD_WRITE_NEW_BC7_MODE5_TABLES - create_etc1_to_bc7_m5_color_conversion_table(); - create_etc1_to_bc7_m5_alpha_conversion_table(); - exit(0); -#endif - -#if BASISD_WRITE_NEW_DXT1_TABLES - create_etc1_to_dxt1_5_conversion_table(); - create_etc1_to_dxt1_6_conversion_table(); - exit(0); -#endif - -#if BASISD_WRITE_NEW_ETC2_EAC_A8_TABLES - create_etc2_eac_a8_conversion_table(); - exit(0); -#endif - -#if BASISD_WRITE_NEW_ATC_TABLES - create_etc1s_to_atc_conversion_tables(); - exit(0); -#endif - -#if BASISD_WRITE_NEW_ETC2_EAC_R11_TABLES - create_etc2_eac_r11_conversion_table(); - exit(0); -#endif - -#if BASISD_SUPPORT_DXT1 || BASISD_SUPPORT_UASTC - uint8_t bc1_expand5[32]; - for (int i = 0; i < 32; i++) - bc1_expand5[i] = static_cast((i << 3) | (i >> 2)); - prepare_bc1_single_color_table(g_bc1_match5_equals_1, bc1_expand5, 32, 32, 1); - prepare_bc1_single_color_table(g_bc1_match5_equals_0, bc1_expand5, 1, 32, 0); - - uint8_t bc1_expand6[64]; - for (int i = 0; i < 64; i++) - bc1_expand6[i] = static_cast((i << 2) | (i >> 4)); - prepare_bc1_single_color_table(g_bc1_match6_equals_1, bc1_expand6, 64, 64, 1); - prepare_bc1_single_color_table(g_bc1_match6_equals_0, bc1_expand6, 1, 64, 0); - -#if 0 - for (uint32_t i = 0; i < 256; i++) - { - printf("%u %u %u\n", i, (i * 63 + 127) / 255, g_bc1_match6_equals_0[i].m_hi); - } - exit(0); -#endif - -#endif - -#if BASISD_SUPPORT_DXT1 - for (uint32_t i = 0; i < NUM_ETC1_TO_DXT1_SELECTOR_RANGES; i++) - { - uint32_t l = g_etc1_to_dxt1_selector_ranges[i].m_low; - uint32_t h = g_etc1_to_dxt1_selector_ranges[i].m_high; - g_etc1_to_dxt1_selector_range_index[l][h] = i; - } - - for (uint32_t sm = 0; sm < NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS; sm++) - { - uint8_t etc1_to_dxt1_selector_mappings_raw_dxt1[4]; - uint8_t etc1_to_dxt1_selector_mappings_raw_dxt1_inv[4]; - - for (uint32_t j = 0; j < 4; j++) - { - static const uint8_t s_linear_dxt1_to_dxt1[4] = { 0, 2, 3, 1 }; - static const uint8_t s_dxt1_inverted_xlat[4] = { 1, 0, 3, 2 }; - - etc1_to_dxt1_selector_mappings_raw_dxt1[j] = (uint8_t)s_linear_dxt1_to_dxt1[g_etc1_to_dxt1_selector_mappings[sm][j]]; - etc1_to_dxt1_selector_mappings_raw_dxt1_inv[j] = (uint8_t)s_dxt1_inverted_xlat[etc1_to_dxt1_selector_mappings_raw_dxt1[j]]; - } - - for (uint32_t i = 0; i < 256; i++) - { - uint32_t k = 0, k_inv = 0; - for (uint32_t s = 0; s < 4; s++) - { - k |= (etc1_to_dxt1_selector_mappings_raw_dxt1[(i >> (s * 2)) & 3] << (s * 2)); - k_inv |= (etc1_to_dxt1_selector_mappings_raw_dxt1_inv[(i >> (s * 2)) & 3] << (s * 2)); - } - g_etc1_to_dxt1_selector_mappings_raw_dxt1_256[sm][i] = (uint8_t)k; - g_etc1_to_dxt1_selector_mappings_raw_dxt1_inv_256[sm][i] = (uint8_t)k_inv; - } - } -#endif - -#if BASISD_SUPPORT_BC7_MODE5 - transcoder_init_bc7_mode5(); -#endif - -#if BASISD_SUPPORT_ATC - transcoder_init_atc(); -#endif - -#if BASISD_SUPPORT_PVRTC2 - transcoder_init_pvrtc2(); -#endif - - g_transcoder_initialized = true; - } - -#if BASISD_SUPPORT_DXT1 - static void convert_etc1s_to_dxt1(dxt1_block* pDst_block, const endpoint *pEndpoints, const selector* pSelector, bool use_threecolor_blocks) - { -#if !BASISD_WRITE_NEW_DXT1_TABLES - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (low_selector == high_selector) - { - uint32_t r, g, b; - decoder_etc_block::get_block_color5(base_color, inten_table, low_selector, r, g, b); - - uint32_t mask = 0xAA; - uint32_t max16 = (g_bc1_match5_equals_1[r].m_hi << 11) | (g_bc1_match6_equals_1[g].m_hi << 5) | g_bc1_match5_equals_1[b].m_hi; - uint32_t min16 = (g_bc1_match5_equals_1[r].m_lo << 11) | (g_bc1_match6_equals_1[g].m_lo << 5) | g_bc1_match5_equals_1[b].m_lo; - - if ((!use_threecolor_blocks) && (min16 == max16)) - { - // This is an annoying edge case that impacts BC3. - // This is to guarantee that BC3 blocks never use punchthrough alpha (3 color) mode, which isn't supported on some (all?) GPU's. - mask = 0; - - // Make l > h - if (min16 > 0) - min16--; - else - { - // l = h = 0 - assert(min16 == max16 && max16 == 0); - - max16 = 1; - min16 = 0; - mask = 0x55; - } - - assert(max16 > min16); - } - - if (max16 < min16) - { - std::swap(max16, min16); - mask ^= 0x55; - } - - pDst_block->set_low_color(static_cast(max16)); - pDst_block->set_high_color(static_cast(min16)); - pDst_block->m_selectors[0] = static_cast(mask); - pDst_block->m_selectors[1] = static_cast(mask); - pDst_block->m_selectors[2] = static_cast(mask); - pDst_block->m_selectors[3] = static_cast(mask); - - return; - } - else if ((inten_table >= 7) && (pSelector->m_num_unique_selectors == 2) && (pSelector->m_lo_selector == 0) && (pSelector->m_hi_selector == 3)) - { - color32 block_colors[4]; - - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - const uint32_t r0 = block_colors[0].r; - const uint32_t g0 = block_colors[0].g; - const uint32_t b0 = block_colors[0].b; - - const uint32_t r1 = block_colors[3].r; - const uint32_t g1 = block_colors[3].g; - const uint32_t b1 = block_colors[3].b; - - uint32_t max16 = (g_bc1_match5_equals_0[r0].m_hi << 11) | (g_bc1_match6_equals_0[g0].m_hi << 5) | g_bc1_match5_equals_0[b0].m_hi; - uint32_t min16 = (g_bc1_match5_equals_0[r1].m_hi << 11) | (g_bc1_match6_equals_0[g1].m_hi << 5) | g_bc1_match5_equals_0[b1].m_hi; - - uint32_t l = 0, h = 1; - - if (min16 == max16) - { - // Make l > h - if (min16 > 0) - { - min16--; - - l = 0; - h = 0; - } - else - { - // l = h = 0 - assert(min16 == max16 && max16 == 0); - - max16 = 1; - min16 = 0; - - l = 1; - h = 1; - } - - assert(max16 > min16); - } - - if (max16 < min16) - { - std::swap(max16, min16); - l = 1; - h = 0; - } - - pDst_block->set_low_color((uint16_t)max16); - pDst_block->set_high_color((uint16_t)min16); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - pDst_block->set_selector(x, y, (s == 3) ? h : l); - } - } - - return; - } - - const uint32_t selector_range_table = g_etc1_to_dxt1_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_dxt1_56_solution* pTable_r = &g_etc1_to_dxt_5[(inten_table * 32 + base_color.r) * (NUM_ETC1_TO_DXT1_SELECTOR_RANGES * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS]; - const etc1_to_dxt1_56_solution* pTable_g = &g_etc1_to_dxt_6[(inten_table * 32 + base_color.g) * (NUM_ETC1_TO_DXT1_SELECTOR_RANGES * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS]; - const etc1_to_dxt1_56_solution* pTable_b = &g_etc1_to_dxt_5[(inten_table * 32 + base_color.b) * (NUM_ETC1_TO_DXT1_SELECTOR_RANGES * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS]; - - uint32_t best_err = UINT_MAX; - uint32_t best_mapping = 0; - - assert(NUM_ETC1_TO_DXT1_SELECTOR_MAPPINGS == 10); -#define DO_ITER(m) { uint32_t total_err = pTable_r[m].m_err + pTable_g[m].m_err + pTable_b[m].m_err; if (total_err < best_err) { best_err = total_err; best_mapping = m; } } - DO_ITER(0); DO_ITER(1); DO_ITER(2); DO_ITER(3); DO_ITER(4); - DO_ITER(5); DO_ITER(6); DO_ITER(7); DO_ITER(8); DO_ITER(9); -#undef DO_ITER - - uint32_t l = dxt1_block::pack_unscaled_color(pTable_r[best_mapping].m_lo, pTable_g[best_mapping].m_lo, pTable_b[best_mapping].m_lo); - uint32_t h = dxt1_block::pack_unscaled_color(pTable_r[best_mapping].m_hi, pTable_g[best_mapping].m_hi, pTable_b[best_mapping].m_hi); - - const uint8_t* pSelectors_xlat_256 = &g_etc1_to_dxt1_selector_mappings_raw_dxt1_256[best_mapping][0]; - - if (l < h) - { - std::swap(l, h); - pSelectors_xlat_256 = &g_etc1_to_dxt1_selector_mappings_raw_dxt1_inv_256[best_mapping][0]; - } - - pDst_block->set_low_color(static_cast(l)); - pDst_block->set_high_color(static_cast(h)); - - if (l == h) - { - uint8_t mask = 0; - - if (!use_threecolor_blocks) - { - // This is an annoying edge case that impacts BC3. - - // Make l > h - if (h > 0) - h--; - else - { - // l = h = 0 - assert(l == h && h == 0); - - h = 0; - l = 1; - mask = 0x55; - } - - assert(l > h); - pDst_block->set_low_color(static_cast(l)); - pDst_block->set_high_color(static_cast(h)); - } - - pDst_block->m_selectors[0] = mask; - pDst_block->m_selectors[1] = mask; - pDst_block->m_selectors[2] = mask; - pDst_block->m_selectors[3] = mask; - - return; - } - - pDst_block->m_selectors[0] = pSelectors_xlat_256[pSelector->m_selectors[0]]; - pDst_block->m_selectors[1] = pSelectors_xlat_256[pSelector->m_selectors[1]]; - pDst_block->m_selectors[2] = pSelectors_xlat_256[pSelector->m_selectors[2]]; - pDst_block->m_selectors[3] = pSelectors_xlat_256[pSelector->m_selectors[3]]; -#endif - } - -#if BASISD_ENABLE_DEBUG_FLAGS - static void convert_etc1s_to_dxt1_vis(dxt1_block* pDst_block, const endpoint* pEndpoints, const selector* pSelector, bool use_threecolor_blocks) - { - convert_etc1s_to_dxt1(pDst_block, pEndpoints, pSelector, use_threecolor_blocks); - - if (g_debug_flags & cDebugFlagVisBC1Sels) - { - uint32_t l = dxt1_block::pack_unscaled_color(31, 63, 31); - uint32_t h = dxt1_block::pack_unscaled_color(0, 0, 0); - pDst_block->set_low_color(static_cast(l)); - pDst_block->set_high_color(static_cast(h)); - } - else if (g_debug_flags & cDebugFlagVisBC1Endpoints) - { - for (uint32_t y = 0; y < 4; y++) - for (uint32_t x = 0; x < 4; x++) - pDst_block->set_selector(x, y, (y < 2) ? 0 : 1); - } - } -#endif -#endif - -#if BASISD_SUPPORT_FXT1 - struct fxt1_block - { - union - { - struct - { - uint64_t m_t00 : 2; - uint64_t m_t01 : 2; - uint64_t m_t02 : 2; - uint64_t m_t03 : 2; - uint64_t m_t04 : 2; - uint64_t m_t05 : 2; - uint64_t m_t06 : 2; - uint64_t m_t07 : 2; - uint64_t m_t08 : 2; - uint64_t m_t09 : 2; - uint64_t m_t10 : 2; - uint64_t m_t11 : 2; - uint64_t m_t12 : 2; - uint64_t m_t13 : 2; - uint64_t m_t14 : 2; - uint64_t m_t15 : 2; - uint64_t m_t16 : 2; - uint64_t m_t17 : 2; - uint64_t m_t18 : 2; - uint64_t m_t19 : 2; - uint64_t m_t20 : 2; - uint64_t m_t21 : 2; - uint64_t m_t22 : 2; - uint64_t m_t23 : 2; - uint64_t m_t24 : 2; - uint64_t m_t25 : 2; - uint64_t m_t26 : 2; - uint64_t m_t27 : 2; - uint64_t m_t28 : 2; - uint64_t m_t29 : 2; - uint64_t m_t30 : 2; - uint64_t m_t31 : 2; - } m_lo; - uint64_t m_lo_bits; - uint8_t m_sels[8]; - }; - union - { - struct - { -#ifdef BASISU_USE_ORIGINAL_3DFX_FXT1_ENCODING - uint64_t m_b1 : 5; - uint64_t m_g1 : 5; - uint64_t m_r1 : 5; - uint64_t m_b0 : 5; - uint64_t m_g0 : 5; - uint64_t m_r0 : 5; - uint64_t m_b3 : 5; - uint64_t m_g3 : 5; - uint64_t m_r3 : 5; - uint64_t m_b2 : 5; - uint64_t m_g2 : 5; - uint64_t m_r2 : 5; -#else - uint64_t m_b0 : 5; - uint64_t m_g0 : 5; - uint64_t m_r0 : 5; - uint64_t m_b1 : 5; - uint64_t m_g1 : 5; - uint64_t m_r1 : 5; - uint64_t m_b2 : 5; - uint64_t m_g2 : 5; - uint64_t m_r2 : 5; - uint64_t m_b3 : 5; - uint64_t m_g3 : 5; - uint64_t m_r3 : 5; -#endif - uint64_t m_alpha : 1; - uint64_t m_glsb : 2; - uint64_t m_mode : 1; - } m_hi; - uint64_t m_hi_bits; - }; - }; - - static uint8_t conv_dxt1_to_fxt1_sels(uint32_t sels) - { - static uint8_t s_conv_table[16] = { 0, 3, 1, 2, 12, 15, 13, 14, 4, 7, 5, 6, 8, 11, 9, 10 }; - return s_conv_table[sels & 15] | (s_conv_table[sels >> 4] << 4); - } - - static void convert_etc1s_to_fxt1(void *pDst, const endpoint *pEndpoints, const selector *pSelectors, uint32_t fxt1_subblock) - { - fxt1_block* pBlock = static_cast(pDst); - - // CC_MIXED is basically DXT1 with different encoding tricks. - // So transcode ETC1S to DXT1, then transcode that to FXT1 which is easy and nearly lossless. - // (It's not completely lossless because FXT1 rounds in its color lerps while DXT1 doesn't, but it should be good enough.) - dxt1_block blk; - convert_etc1s_to_dxt1(&blk, pEndpoints, pSelectors, false); - - const uint32_t l = blk.get_low_color(); - const uint32_t h = blk.get_high_color(); - - color32 color0((l >> 11) & 31, (l >> 5) & 63, l & 31, 255); - color32 color1((h >> 11) & 31, (h >> 5) & 63, h & 31, 255); - - uint32_t g0 = color0.g & 1; - uint32_t g1 = color1.g & 1; - - color0.g >>= 1; - color1.g >>= 1; - - blk.m_selectors[0] = conv_dxt1_to_fxt1_sels(blk.m_selectors[0]); - blk.m_selectors[1] = conv_dxt1_to_fxt1_sels(blk.m_selectors[1]); - blk.m_selectors[2] = conv_dxt1_to_fxt1_sels(blk.m_selectors[2]); - blk.m_selectors[3] = conv_dxt1_to_fxt1_sels(blk.m_selectors[3]); - - if ((blk.get_selector(0, 0) >> 1) != (g0 ^ g1)) - { - std::swap(color0, color1); - std::swap(g0, g1); - - blk.m_selectors[0] ^= 0xFF; - blk.m_selectors[1] ^= 0xFF; - blk.m_selectors[2] ^= 0xFF; - blk.m_selectors[3] ^= 0xFF; - } - - if (fxt1_subblock == 0) - { - pBlock->m_hi.m_mode = 1; - pBlock->m_hi.m_alpha = 0; - pBlock->m_hi.m_glsb = g1 | (g1 << 1); - pBlock->m_hi.m_r0 = color0.r; - pBlock->m_hi.m_g0 = color0.g; - pBlock->m_hi.m_b0 = color0.b; - pBlock->m_hi.m_r1 = color1.r; - pBlock->m_hi.m_g1 = color1.g; - pBlock->m_hi.m_b1 = color1.b; - pBlock->m_hi.m_r2 = color0.r; - pBlock->m_hi.m_g2 = color0.g; - pBlock->m_hi.m_b2 = color0.b; - pBlock->m_hi.m_r3 = color1.r; - pBlock->m_hi.m_g3 = color1.g; - pBlock->m_hi.m_b3 = color1.b; - pBlock->m_sels[0] = blk.m_selectors[0]; - pBlock->m_sels[1] = blk.m_selectors[1]; - pBlock->m_sels[2] = blk.m_selectors[2]; - pBlock->m_sels[3] = blk.m_selectors[3]; - - static const uint8_t s_border_dup[4] = { 0, 85, 170, 255 }; - pBlock->m_sels[4] = s_border_dup[blk.m_selectors[0] >> 6]; - pBlock->m_sels[5] = s_border_dup[blk.m_selectors[1] >> 6]; - pBlock->m_sels[6] = s_border_dup[blk.m_selectors[2] >> 6]; - pBlock->m_sels[7] = s_border_dup[blk.m_selectors[3] >> 6]; - } - else - { - pBlock->m_hi.m_glsb = (pBlock->m_hi.m_glsb & 1) | (g1 << 1); - pBlock->m_hi.m_r2 = color0.r; - pBlock->m_hi.m_g2 = color0.g; - pBlock->m_hi.m_b2 = color0.b; - pBlock->m_hi.m_r3 = color1.r; - pBlock->m_hi.m_g3 = color1.g; - pBlock->m_hi.m_b3 = color1.b; - pBlock->m_sels[4] = blk.m_selectors[0]; - pBlock->m_sels[5] = blk.m_selectors[1]; - pBlock->m_sels[6] = blk.m_selectors[2]; - pBlock->m_sels[7] = blk.m_selectors[3]; - } - } -#endif // BASISD_SUPPORT_FXT1 -#if BASISD_SUPPORT_DXT5A - static dxt_selector_range s_dxt5a_selector_ranges[] = - { - { 0, 3 }, - - { 1, 3 }, - { 0, 2 }, - - { 1, 2 }, - }; - - const uint32_t NUM_DXT5A_SELECTOR_RANGES = sizeof(s_dxt5a_selector_ranges) / sizeof(s_dxt5a_selector_ranges[0]); - - struct etc1_g_to_dxt5a_conversion - { - uint8_t m_lo, m_hi; - uint16_t m_trans; - }; - - static etc1_g_to_dxt5a_conversion g_etc1_g_to_dxt5a[32 * 8][NUM_DXT5A_SELECTOR_RANGES] = - { - { { 8, 0, 393 },{ 8, 0, 392 },{ 2, 0, 9 },{ 2, 0, 8 }, }, { { 6, 16, 710 },{ 16, 6, 328 },{ 0, 10, 96 },{ 10, 6, 8 }, }, - { { 28, 5, 1327 },{ 24, 14, 328 },{ 8, 18, 96 },{ 18, 14, 8 }, }, { { 36, 13, 1327 },{ 32, 22, 328 },{ 16, 26, 96 },{ 26, 22, 8 }, }, - { { 45, 22, 1327 },{ 41, 31, 328 },{ 25, 35, 96 },{ 35, 31, 8 }, }, { { 53, 30, 1327 },{ 49, 39, 328 },{ 33, 43, 96 },{ 43, 39, 8 }, }, - { { 61, 38, 1327 },{ 57, 47, 328 },{ 41, 51, 96 },{ 51, 47, 8 }, }, { { 69, 46, 1327 },{ 65, 55, 328 },{ 49, 59, 96 },{ 59, 55, 8 }, }, - { { 78, 55, 1327 },{ 74, 64, 328 },{ 58, 68, 96 },{ 68, 64, 8 }, }, { { 86, 63, 1327 },{ 82, 72, 328 },{ 66, 76, 96 },{ 76, 72, 8 }, }, - { { 94, 71, 1327 },{ 90, 80, 328 },{ 74, 84, 96 },{ 84, 80, 8 }, }, { { 102, 79, 1327 },{ 98, 88, 328 },{ 82, 92, 96 },{ 92, 88, 8 }, }, - { { 111, 88, 1327 },{ 107, 97, 328 },{ 91, 101, 96 },{ 101, 97, 8 }, }, { { 119, 96, 1327 },{ 115, 105, 328 },{ 99, 109, 96 },{ 109, 105, 8 }, }, - { { 127, 104, 1327 },{ 123, 113, 328 },{ 107, 117, 96 },{ 117, 113, 8 }, }, { { 135, 112, 1327 },{ 131, 121, 328 },{ 115, 125, 96 },{ 125, 121, 8 }, }, - { { 144, 121, 1327 },{ 140, 130, 328 },{ 124, 134, 96 },{ 134, 130, 8 }, }, { { 152, 129, 1327 },{ 148, 138, 328 },{ 132, 142, 96 },{ 142, 138, 8 }, }, - { { 160, 137, 1327 },{ 156, 146, 328 },{ 140, 150, 96 },{ 150, 146, 8 }, }, { { 168, 145, 1327 },{ 164, 154, 328 },{ 148, 158, 96 },{ 158, 154, 8 }, }, - { { 177, 154, 1327 },{ 173, 163, 328 },{ 157, 167, 96 },{ 167, 163, 8 }, }, { { 185, 162, 1327 },{ 181, 171, 328 },{ 165, 175, 96 },{ 175, 171, 8 }, }, - { { 193, 170, 1327 },{ 189, 179, 328 },{ 173, 183, 96 },{ 183, 179, 8 }, }, { { 201, 178, 1327 },{ 197, 187, 328 },{ 181, 191, 96 },{ 191, 187, 8 }, }, - { { 210, 187, 1327 },{ 206, 196, 328 },{ 190, 200, 96 },{ 200, 196, 8 }, }, { { 218, 195, 1327 },{ 214, 204, 328 },{ 198, 208, 96 },{ 208, 204, 8 }, }, - { { 226, 203, 1327 },{ 222, 212, 328 },{ 206, 216, 96 },{ 216, 212, 8 }, }, { { 234, 211, 1327 },{ 230, 220, 328 },{ 214, 224, 96 },{ 224, 220, 8 }, }, - { { 243, 220, 1327 },{ 239, 229, 328 },{ 223, 233, 96 },{ 233, 229, 8 }, }, { { 251, 228, 1327 },{ 247, 237, 328 },{ 231, 241, 96 },{ 241, 237, 8 }, }, - { { 239, 249, 3680 },{ 245, 249, 3648 },{ 239, 249, 96 },{ 249, 245, 8 }, }, { { 247, 253, 4040 },{ 255, 253, 8 },{ 247, 253, 456 },{ 255, 253, 8 }, }, - { { 5, 17, 566 },{ 5, 17, 560 },{ 5, 0, 9 },{ 5, 0, 8 }, }, { { 25, 0, 313 },{ 25, 3, 328 },{ 13, 0, 49 },{ 13, 3, 8 }, }, - { { 39, 0, 1329 },{ 33, 11, 328 },{ 11, 21, 70 },{ 21, 11, 8 }, }, { { 47, 7, 1329 },{ 41, 19, 328 },{ 29, 7, 33 },{ 29, 19, 8 }, }, - { { 50, 11, 239 },{ 50, 28, 328 },{ 38, 16, 33 },{ 38, 28, 8 }, }, { { 92, 13, 2423 },{ 58, 36, 328 },{ 46, 24, 33 },{ 46, 36, 8 }, }, - { { 100, 21, 2423 },{ 66, 44, 328 },{ 54, 32, 33 },{ 54, 44, 8 }, }, { { 86, 7, 1253 },{ 74, 52, 328 },{ 62, 40, 33 },{ 62, 52, 8 }, }, - { { 95, 16, 1253 },{ 83, 61, 328 },{ 71, 49, 33 },{ 71, 61, 8 }, }, { { 103, 24, 1253 },{ 91, 69, 328 },{ 79, 57, 33 },{ 79, 69, 8 }, }, - { { 111, 32, 1253 },{ 99, 77, 328 },{ 87, 65, 33 },{ 87, 77, 8 }, }, { { 119, 40, 1253 },{ 107, 85, 328 },{ 95, 73, 33 },{ 95, 85, 8 }, }, - { { 128, 49, 1253 },{ 116, 94, 328 },{ 104, 82, 33 },{ 104, 94, 8 }, }, { { 136, 57, 1253 },{ 124, 102, 328 },{ 112, 90, 33 },{ 112, 102, 8 }, }, - { { 144, 65, 1253 },{ 132, 110, 328 },{ 120, 98, 33 },{ 120, 110, 8 }, }, { { 152, 73, 1253 },{ 140, 118, 328 },{ 128, 106, 33 },{ 128, 118, 8 }, }, - { { 161, 82, 1253 },{ 149, 127, 328 },{ 137, 115, 33 },{ 137, 127, 8 }, }, { { 169, 90, 1253 },{ 157, 135, 328 },{ 145, 123, 33 },{ 145, 135, 8 }, }, - { { 177, 98, 1253 },{ 165, 143, 328 },{ 153, 131, 33 },{ 153, 143, 8 }, }, { { 185, 106, 1253 },{ 173, 151, 328 },{ 161, 139, 33 },{ 161, 151, 8 }, }, - { { 194, 115, 1253 },{ 182, 160, 328 },{ 170, 148, 33 },{ 170, 160, 8 }, }, { { 202, 123, 1253 },{ 190, 168, 328 },{ 178, 156, 33 },{ 178, 168, 8 }, }, - { { 210, 131, 1253 },{ 198, 176, 328 },{ 186, 164, 33 },{ 186, 176, 8 }, }, { { 218, 139, 1253 },{ 206, 184, 328 },{ 194, 172, 33 },{ 194, 184, 8 }, }, - { { 227, 148, 1253 },{ 215, 193, 328 },{ 203, 181, 33 },{ 203, 193, 8 }, }, { { 235, 156, 1253 },{ 223, 201, 328 },{ 211, 189, 33 },{ 211, 201, 8 }, }, - { { 243, 164, 1253 },{ 231, 209, 328 },{ 219, 197, 33 },{ 219, 209, 8 }, }, { { 183, 239, 867 },{ 239, 217, 328 },{ 227, 205, 33 },{ 227, 217, 8 }, }, - { { 254, 214, 1329 },{ 248, 226, 328 },{ 236, 214, 33 },{ 236, 226, 8 }, }, { { 222, 244, 3680 },{ 234, 244, 3648 },{ 244, 222, 33 },{ 244, 234, 8 }, }, - { { 230, 252, 3680 },{ 242, 252, 3648 },{ 252, 230, 33 },{ 252, 242, 8 }, }, { { 238, 250, 4040 },{ 255, 250, 8 },{ 238, 250, 456 },{ 255, 250, 8 }, }, - { { 9, 29, 566 },{ 9, 29, 560 },{ 9, 0, 9 },{ 9, 0, 8 }, }, { { 17, 37, 566 },{ 17, 37, 560 },{ 17, 0, 9 },{ 17, 0, 8 }, }, - { { 45, 0, 313 },{ 45, 0, 312 },{ 25, 0, 49 },{ 25, 7, 8 }, }, { { 14, 63, 2758 },{ 5, 53, 784 },{ 15, 33, 70 },{ 33, 15, 8 }, }, - { { 71, 6, 1329 },{ 72, 4, 1328 },{ 42, 4, 33 },{ 42, 24, 8 }, }, { { 70, 3, 239 },{ 70, 2, 232 },{ 50, 12, 33 },{ 50, 32, 8 }, }, - { { 0, 98, 2842 },{ 78, 10, 232 },{ 58, 20, 33 },{ 58, 40, 8 }, }, { { 97, 27, 1329 },{ 86, 18, 232 },{ 66, 28, 33 },{ 66, 48, 8 }, }, - { { 0, 94, 867 },{ 95, 27, 232 },{ 75, 37, 33 },{ 75, 57, 8 }, }, { { 8, 102, 867 },{ 103, 35, 232 },{ 83, 45, 33 },{ 83, 65, 8 }, }, - { { 12, 112, 867 },{ 111, 43, 232 },{ 91, 53, 33 },{ 91, 73, 8 }, }, { { 139, 2, 1253 },{ 119, 51, 232 },{ 99, 61, 33 },{ 99, 81, 8 }, }, - { { 148, 13, 1253 },{ 128, 60, 232 },{ 108, 70, 33 },{ 108, 90, 8 }, }, { { 156, 21, 1253 },{ 136, 68, 232 },{ 116, 78, 33 },{ 116, 98, 8 }, }, - { { 164, 29, 1253 },{ 144, 76, 232 },{ 124, 86, 33 },{ 124, 106, 8 }, }, { { 172, 37, 1253 },{ 152, 84, 232 },{ 132, 94, 33 },{ 132, 114, 8 }, }, - { { 181, 46, 1253 },{ 161, 93, 232 },{ 141, 103, 33 },{ 141, 123, 8 }, }, { { 189, 54, 1253 },{ 169, 101, 232 },{ 149, 111, 33 },{ 149, 131, 8 }, }, - { { 197, 62, 1253 },{ 177, 109, 232 },{ 157, 119, 33 },{ 157, 139, 8 }, }, { { 205, 70, 1253 },{ 185, 117, 232 },{ 165, 127, 33 },{ 165, 147, 8 }, }, - { { 214, 79, 1253 },{ 194, 126, 232 },{ 174, 136, 33 },{ 174, 156, 8 }, }, { { 222, 87, 1253 },{ 202, 134, 232 },{ 182, 144, 33 },{ 182, 164, 8 }, }, - { { 230, 95, 1253 },{ 210, 142, 232 },{ 190, 152, 33 },{ 190, 172, 8 }, }, { { 238, 103, 1253 },{ 218, 150, 232 },{ 198, 160, 33 },{ 198, 180, 8 }, }, - { { 247, 112, 1253 },{ 227, 159, 232 },{ 207, 169, 33 },{ 207, 189, 8 }, }, { { 255, 120, 1253 },{ 235, 167, 232 },{ 215, 177, 33 },{ 215, 197, 8 }, }, - { { 146, 243, 867 },{ 243, 175, 232 },{ 223, 185, 33 },{ 223, 205, 8 }, }, { { 184, 231, 3682 },{ 203, 251, 784 },{ 231, 193, 33 },{ 231, 213, 8 }, }, - { { 193, 240, 3682 },{ 222, 240, 3648 },{ 240, 202, 33 },{ 240, 222, 8 }, }, { { 255, 210, 169 },{ 230, 248, 3648 },{ 248, 210, 33 },{ 248, 230, 8 }, }, - { { 218, 238, 4040 },{ 255, 238, 8 },{ 218, 238, 456 },{ 255, 238, 8 }, }, { { 226, 246, 4040 },{ 255, 246, 8 },{ 226, 246, 456 },{ 255, 246, 8 }, }, - { { 13, 42, 566 },{ 13, 42, 560 },{ 13, 0, 9 },{ 13, 0, 8 }, }, { { 50, 0, 329 },{ 50, 0, 328 },{ 21, 0, 9 },{ 21, 0, 8 }, }, - { { 29, 58, 566 },{ 67, 2, 1352 },{ 3, 29, 70 },{ 29, 3, 8 }, }, { { 10, 79, 2758 },{ 76, 11, 1352 },{ 11, 37, 70 },{ 37, 11, 8 }, }, - { { 7, 75, 790 },{ 7, 75, 784 },{ 20, 46, 70 },{ 46, 20, 8 }, }, { { 15, 83, 790 },{ 97, 1, 1328 },{ 28, 54, 70 },{ 54, 28, 8 }, }, - { { 101, 7, 1329 },{ 105, 9, 1328 },{ 62, 0, 39 },{ 62, 36, 8 }, }, { { 99, 1, 239 },{ 99, 3, 232 },{ 1, 71, 98 },{ 70, 44, 8 }, }, - { { 107, 11, 239 },{ 108, 12, 232 },{ 10, 80, 98 },{ 79, 53, 8 }, }, { { 115, 19, 239 },{ 116, 20, 232 },{ 18, 88, 98 },{ 87, 61, 8 }, }, - { { 123, 27, 239 },{ 124, 28, 232 },{ 26, 96, 98 },{ 95, 69, 8 }, }, { { 131, 35, 239 },{ 132, 36, 232 },{ 34, 104, 98 },{ 103, 77, 8 }, }, - { { 140, 44, 239 },{ 141, 45, 232 },{ 43, 113, 98 },{ 112, 86, 8 }, }, { { 148, 52, 239 },{ 149, 53, 232 },{ 51, 121, 98 },{ 120, 94, 8 }, }, - { { 156, 60, 239 },{ 157, 61, 232 },{ 59, 129, 98 },{ 128, 102, 8 }, }, { { 164, 68, 239 },{ 165, 69, 232 },{ 67, 137, 98 },{ 136, 110, 8 }, }, - { { 173, 77, 239 },{ 174, 78, 232 },{ 76, 146, 98 },{ 145, 119, 8 }, }, { { 181, 85, 239 },{ 182, 86, 232 },{ 84, 154, 98 },{ 153, 127, 8 }, }, - { { 189, 93, 239 },{ 190, 94, 232 },{ 92, 162, 98 },{ 161, 135, 8 }, }, { { 197, 101, 239 },{ 198, 102, 232 },{ 100, 170, 98 },{ 169, 143, 8 }, }, - { { 206, 110, 239 },{ 207, 111, 232 },{ 109, 179, 98 },{ 178, 152, 8 }, }, { { 214, 118, 239 },{ 215, 119, 232 },{ 117, 187, 98 },{ 186, 160, 8 }, }, - { { 222, 126, 239 },{ 223, 127, 232 },{ 125, 195, 98 },{ 194, 168, 8 }, }, { { 230, 134, 239 },{ 231, 135, 232 },{ 133, 203, 98 },{ 202, 176, 8 }, }, - { { 239, 143, 239 },{ 240, 144, 232 },{ 142, 212, 98 },{ 211, 185, 8 }, }, { { 247, 151, 239 },{ 180, 248, 784 },{ 150, 220, 98 },{ 219, 193, 8 }, }, - { { 159, 228, 3682 },{ 201, 227, 3648 },{ 158, 228, 98 },{ 227, 201, 8 }, }, { { 181, 249, 3928 },{ 209, 235, 3648 },{ 166, 236, 98 },{ 235, 209, 8 }, }, - { { 255, 189, 169 },{ 218, 244, 3648 },{ 175, 245, 98 },{ 244, 218, 8 }, }, { { 197, 226, 4040 },{ 226, 252, 3648 },{ 183, 253, 98 },{ 252, 226, 8 }, }, - { { 205, 234, 4040 },{ 255, 234, 8 },{ 205, 234, 456 },{ 255, 234, 8 }, }, { { 213, 242, 4040 },{ 255, 242, 8 },{ 213, 242, 456 },{ 255, 242, 8 }, }, - { { 18, 60, 566 },{ 18, 60, 560 },{ 18, 0, 9 },{ 18, 0, 8 }, }, { { 26, 68, 566 },{ 26, 68, 560 },{ 26, 0, 9 },{ 26, 0, 8 }, }, - { { 34, 76, 566 },{ 34, 76, 560 },{ 34, 0, 9 },{ 34, 0, 8 }, }, { { 5, 104, 2758 },{ 98, 5, 1352 },{ 42, 0, 57 },{ 42, 6, 8 }, }, - { { 92, 0, 313 },{ 93, 1, 312 },{ 15, 51, 70 },{ 51, 15, 8 }, }, { { 3, 101, 790 },{ 3, 101, 784 },{ 0, 59, 88 },{ 59, 23, 8 }, }, - { { 14, 107, 790 },{ 11, 109, 784 },{ 31, 67, 70 },{ 67, 31, 8 }, }, { { 19, 117, 790 },{ 19, 117, 784 },{ 39, 75, 70 },{ 75, 39, 8 }, }, - { { 28, 126, 790 },{ 28, 126, 784 },{ 83, 5, 33 },{ 84, 48, 8 }, }, { { 132, 0, 239 },{ 36, 134, 784 },{ 91, 13, 33 },{ 92, 56, 8 }, }, - { { 142, 4, 239 },{ 44, 142, 784 },{ 99, 21, 33 },{ 100, 64, 8 }, }, { { 150, 12, 239 },{ 52, 150, 784 },{ 107, 29, 33 },{ 108, 72, 8 }, }, - { { 159, 21, 239 },{ 61, 159, 784 },{ 116, 38, 33 },{ 117, 81, 8 }, }, { { 167, 29, 239 },{ 69, 167, 784 },{ 124, 46, 33 },{ 125, 89, 8 }, }, - { { 175, 37, 239 },{ 77, 175, 784 },{ 132, 54, 33 },{ 133, 97, 8 }, }, { { 183, 45, 239 },{ 85, 183, 784 },{ 140, 62, 33 },{ 141, 105, 8 }, }, - { { 192, 54, 239 },{ 94, 192, 784 },{ 149, 71, 33 },{ 150, 114, 8 }, }, { { 200, 62, 239 },{ 102, 200, 784 },{ 157, 79, 33 },{ 158, 122, 8 }, }, - { { 208, 70, 239 },{ 110, 208, 784 },{ 165, 87, 33 },{ 166, 130, 8 }, }, { { 216, 78, 239 },{ 118, 216, 784 },{ 173, 95, 33 },{ 174, 138, 8 }, }, - { { 225, 87, 239 },{ 127, 225, 784 },{ 182, 104, 33 },{ 183, 147, 8 }, }, { { 233, 95, 239 },{ 135, 233, 784 },{ 190, 112, 33 },{ 191, 155, 8 }, }, - { { 241, 103, 239 },{ 143, 241, 784 },{ 198, 120, 33 },{ 199, 163, 8 }, }, { { 111, 208, 3682 },{ 151, 249, 784 },{ 206, 128, 33 },{ 207, 171, 8 }, }, - { { 120, 217, 3682 },{ 180, 216, 3648 },{ 215, 137, 33 },{ 216, 180, 8 }, }, { { 128, 225, 3682 },{ 188, 224, 3648 },{ 223, 145, 33 },{ 224, 188, 8 }, }, - { { 155, 253, 3928 },{ 196, 232, 3648 },{ 231, 153, 33 },{ 232, 196, 8 }, }, { { 144, 241, 3682 },{ 204, 240, 3648 },{ 239, 161, 33 },{ 240, 204, 8 }, }, - { { 153, 250, 3682 },{ 213, 249, 3648 },{ 248, 170, 33 },{ 249, 213, 8 }, }, { { 179, 221, 4040 },{ 255, 221, 8 },{ 179, 221, 456 },{ 255, 221, 8 }, }, - { { 187, 229, 4040 },{ 255, 229, 8 },{ 187, 229, 456 },{ 255, 229, 8 }, }, { { 195, 237, 4040 },{ 255, 237, 8 },{ 195, 237, 456 },{ 255, 237, 8 }, }, - { { 24, 80, 566 },{ 24, 80, 560 },{ 24, 0, 9 },{ 24, 0, 8 }, }, { { 32, 88, 566 },{ 32, 88, 560 },{ 32, 0, 9 },{ 32, 0, 8 }, }, - { { 40, 96, 566 },{ 40, 96, 560 },{ 40, 0, 9 },{ 40, 0, 8 }, }, { { 48, 104, 566 },{ 48, 104, 560 },{ 48, 0, 9 },{ 48, 0, 8 }, }, - { { 9, 138, 2758 },{ 130, 7, 1352 },{ 9, 57, 70 },{ 57, 9, 8 }, }, { { 119, 0, 313 },{ 120, 0, 312 },{ 17, 65, 70 },{ 65, 17, 8 }, }, - { { 0, 128, 784 },{ 128, 6, 312 },{ 25, 73, 70 },{ 73, 25, 8 }, }, { { 6, 137, 790 },{ 5, 136, 784 },{ 33, 81, 70 },{ 81, 33, 8 }, }, - { { 42, 171, 2758 },{ 14, 145, 784 },{ 42, 90, 70 },{ 90, 42, 8 }, }, { { 50, 179, 2758 },{ 22, 153, 784 },{ 50, 98, 70 },{ 98, 50, 8 }, }, - { { 58, 187, 2758 },{ 30, 161, 784 },{ 58, 106, 70 },{ 106, 58, 8 }, }, { { 191, 18, 1329 },{ 38, 169, 784 },{ 112, 9, 33 },{ 114, 66, 8 }, }, - { { 176, 0, 239 },{ 47, 178, 784 },{ 121, 18, 33 },{ 123, 75, 8 }, }, { { 187, 1, 239 },{ 55, 186, 784 },{ 129, 26, 33 },{ 131, 83, 8 }, }, - { { 195, 10, 239 },{ 63, 194, 784 },{ 137, 34, 33 },{ 139, 91, 8 }, }, { { 203, 18, 239 },{ 71, 202, 784 },{ 145, 42, 33 },{ 147, 99, 8 }, }, - { { 212, 27, 239 },{ 80, 211, 784 },{ 154, 51, 33 },{ 156, 108, 8 }, }, { { 220, 35, 239 },{ 88, 219, 784 },{ 162, 59, 33 },{ 164, 116, 8 }, }, - { { 228, 43, 239 },{ 96, 227, 784 },{ 170, 67, 33 },{ 172, 124, 8 }, }, { { 236, 51, 239 },{ 104, 235, 784 },{ 178, 75, 33 },{ 180, 132, 8 }, }, - { { 245, 60, 239 },{ 113, 244, 784 },{ 187, 84, 33 },{ 189, 141, 8 }, }, { { 91, 194, 3680 },{ 149, 197, 3648 },{ 195, 92, 33 },{ 197, 149, 8 }, }, - { { 99, 202, 3680 },{ 157, 205, 3648 },{ 203, 100, 33 },{ 205, 157, 8 }, }, { { 107, 210, 3680 },{ 165, 213, 3648 },{ 211, 108, 33 },{ 213, 165, 8 }, }, - { { 119, 249, 3928 },{ 174, 222, 3648 },{ 220, 117, 33 },{ 222, 174, 8 }, }, { { 127, 255, 856 },{ 182, 230, 3648 },{ 228, 125, 33 },{ 230, 182, 8 }, }, - { { 255, 135, 169 },{ 190, 238, 3648 },{ 236, 133, 33 },{ 238, 190, 8 }, }, { { 140, 243, 3680 },{ 198, 246, 3648 },{ 244, 141, 33 },{ 246, 198, 8 }, }, - { { 151, 207, 4040 },{ 255, 207, 8 },{ 151, 207, 456 },{ 255, 207, 8 }, }, { { 159, 215, 4040 },{ 255, 215, 8 },{ 159, 215, 456 },{ 255, 215, 8 }, }, - { { 167, 223, 4040 },{ 255, 223, 8 },{ 167, 223, 456 },{ 255, 223, 8 }, }, { { 175, 231, 4040 },{ 255, 231, 8 },{ 175, 231, 456 },{ 255, 231, 8 }, }, - { { 33, 106, 566 },{ 33, 106, 560 },{ 33, 0, 9 },{ 33, 0, 8 }, }, { { 41, 114, 566 },{ 41, 114, 560 },{ 41, 0, 9 },{ 41, 0, 8 }, }, - { { 49, 122, 566 },{ 49, 122, 560 },{ 49, 0, 9 },{ 49, 0, 8 }, }, { { 57, 130, 566 },{ 57, 130, 560 },{ 57, 0, 9 },{ 57, 0, 8 }, }, - { { 66, 139, 566 },{ 66, 139, 560 },{ 66, 0, 9 },{ 66, 0, 8 }, }, { { 74, 147, 566 },{ 170, 7, 1352 },{ 8, 74, 70 },{ 74, 8, 8 }, }, - { { 152, 0, 313 },{ 178, 15, 1352 },{ 0, 82, 80 },{ 82, 16, 8 }, }, { { 162, 0, 313 },{ 186, 23, 1352 },{ 24, 90, 70 },{ 90, 24, 8 }, }, - { { 0, 171, 784 },{ 195, 32, 1352 },{ 33, 99, 70 },{ 99, 33, 8 }, }, { { 6, 179, 790 },{ 203, 40, 1352 },{ 41, 107, 70 },{ 107, 41, 8 }, }, - { { 15, 187, 790 },{ 211, 48, 1352 },{ 115, 0, 41 },{ 115, 49, 8 }, }, { { 61, 199, 710 },{ 219, 56, 1352 },{ 57, 123, 70 },{ 123, 57, 8 }, }, - { { 70, 208, 710 },{ 228, 65, 1352 },{ 66, 132, 70 },{ 132, 66, 8 }, }, { { 78, 216, 710 },{ 236, 73, 1352 },{ 74, 140, 70 },{ 140, 74, 8 }, }, - { { 86, 224, 710 },{ 244, 81, 1352 },{ 145, 7, 33 },{ 148, 82, 8 }, }, { { 222, 8, 233 },{ 252, 89, 1352 },{ 153, 15, 33 },{ 156, 90, 8 }, }, - { { 235, 0, 239 },{ 241, 101, 328 },{ 166, 6, 39 },{ 165, 99, 8 }, }, { { 32, 170, 3680 },{ 249, 109, 328 },{ 0, 175, 98 },{ 173, 107, 8 }, }, - { { 40, 178, 3680 },{ 115, 181, 3648 },{ 8, 183, 98 },{ 181, 115, 8 }, }, { { 48, 186, 3680 },{ 123, 189, 3648 },{ 16, 191, 98 },{ 189, 123, 8 }, }, - { { 57, 195, 3680 },{ 132, 198, 3648 },{ 25, 200, 98 },{ 198, 132, 8 }, }, { { 67, 243, 3928 },{ 140, 206, 3648 },{ 33, 208, 98 },{ 206, 140, 8 }, }, - { { 76, 251, 3928 },{ 148, 214, 3648 },{ 41, 216, 98 },{ 214, 148, 8 }, }, { { 86, 255, 856 },{ 156, 222, 3648 },{ 49, 224, 98 },{ 222, 156, 8 }, }, - { { 255, 93, 169 },{ 165, 231, 3648 },{ 58, 233, 98 },{ 231, 165, 8 }, }, { { 98, 236, 3680 },{ 173, 239, 3648 },{ 66, 241, 98 },{ 239, 173, 8 }, }, - { { 108, 181, 4040 },{ 181, 247, 3648 },{ 74, 249, 98 },{ 247, 181, 8 }, }, { { 116, 189, 4040 },{ 255, 189, 8 },{ 116, 189, 456 },{ 255, 189, 8 }, }, - { { 125, 198, 4040 },{ 255, 198, 8 },{ 125, 198, 456 },{ 255, 198, 8 }, }, { { 133, 206, 4040 },{ 255, 206, 8 },{ 133, 206, 456 },{ 255, 206, 8 }, }, - { { 141, 214, 4040 },{ 255, 214, 8 },{ 141, 214, 456 },{ 255, 214, 8 }, }, { { 149, 222, 4040 },{ 255, 222, 8 },{ 149, 222, 456 },{ 255, 222, 8 }, }, - { { 47, 183, 566 },{ 47, 183, 560 },{ 47, 0, 9 },{ 47, 0, 8 }, }, { { 55, 191, 566 },{ 55, 191, 560 },{ 55, 0, 9 },{ 55, 0, 8 }, }, - { { 63, 199, 566 },{ 63, 199, 560 },{ 63, 0, 9 },{ 63, 0, 8 }, }, { { 71, 207, 566 },{ 71, 207, 560 },{ 71, 0, 9 },{ 71, 0, 8 }, }, - { { 80, 216, 566 },{ 80, 216, 560 },{ 80, 0, 9 },{ 80, 0, 8 }, }, { { 88, 224, 566 },{ 88, 224, 560 },{ 88, 0, 9 },{ 88, 0, 8 }, }, - { { 3, 233, 710 },{ 3, 233, 704 },{ 2, 96, 70 },{ 96, 2, 8 }, }, { { 11, 241, 710 },{ 11, 241, 704 },{ 10, 104, 70 },{ 104, 10, 8 }, }, - { { 20, 250, 710 },{ 20, 250, 704 },{ 19, 113, 70 },{ 113, 19, 8 }, }, { { 27, 121, 3654 },{ 27, 121, 3648 },{ 27, 121, 70 },{ 121, 27, 8 }, }, - { { 35, 129, 3654 },{ 35, 129, 3648 },{ 35, 129, 70 },{ 129, 35, 8 }, }, { { 43, 137, 3654 },{ 43, 137, 3648 },{ 43, 137, 70 },{ 137, 43, 8 }, }, - { { 52, 146, 3654 },{ 52, 146, 3648 },{ 52, 146, 70 },{ 146, 52, 8 }, }, { { 60, 154, 3654 },{ 60, 154, 3648 },{ 60, 154, 70 },{ 154, 60, 8 }, }, - { { 68, 162, 3654 },{ 68, 162, 3648 },{ 68, 162, 70 },{ 162, 68, 8 }, }, { { 76, 170, 3654 },{ 76, 170, 3648 },{ 76, 170, 70 },{ 170, 76, 8 }, }, - { { 85, 179, 3654 },{ 85, 179, 3648 },{ 85, 179, 70 },{ 179, 85, 8 }, }, { { 93, 187, 3654 },{ 93, 187, 3648 },{ 93, 187, 70 },{ 187, 93, 8 }, }, - { { 101, 195, 3654 },{ 101, 195, 3648 },{ 101, 195, 70 },{ 195, 101, 8 }, }, { { 109, 203, 3654 },{ 109, 203, 3648 },{ 109, 203, 70 },{ 203, 109, 8 }, }, - { { 118, 212, 3654 },{ 118, 212, 3648 },{ 118, 212, 70 },{ 212, 118, 8 }, }, { { 126, 220, 3654 },{ 126, 220, 3648 },{ 126, 220, 70 },{ 220, 126, 8 }, }, - { { 134, 228, 3654 },{ 134, 228, 3648 },{ 134, 228, 70 },{ 228, 134, 8 }, }, { { 5, 236, 3680 },{ 142, 236, 3648 },{ 5, 236, 96 },{ 236, 142, 8 }, }, - { { 14, 245, 3680 },{ 151, 245, 3648 },{ 14, 245, 96 },{ 245, 151, 8 }, }, { { 23, 159, 4040 },{ 159, 253, 3648 },{ 23, 159, 456 },{ 253, 159, 8 }, }, - { { 31, 167, 4040 },{ 255, 167, 8 },{ 31, 167, 456 },{ 255, 167, 8 }, }, { { 39, 175, 4040 },{ 255, 175, 8 },{ 39, 175, 456 },{ 255, 175, 8 }, }, - { { 48, 184, 4040 },{ 255, 184, 8 },{ 48, 184, 456 },{ 255, 184, 8 }, }, { { 56, 192, 4040 },{ 255, 192, 8 },{ 56, 192, 456 },{ 255, 192, 8 }, }, - { { 64, 200, 4040 },{ 255, 200, 8 },{ 64, 200, 456 },{ 255, 200, 8 }, },{ { 72, 208, 4040 },{ 255, 208, 8 },{ 72, 208, 456 },{ 255, 208, 8 }, }, - - }; - - struct dxt5a_block - { - uint8_t m_endpoints[2]; - - enum { cTotalSelectorBytes = 6 }; - uint8_t m_selectors[cTotalSelectorBytes]; - - inline void clear() - { - basisu::clear_obj(*this); - } - - inline uint32_t get_low_alpha() const - { - return m_endpoints[0]; - } - - inline uint32_t get_high_alpha() const - { - return m_endpoints[1]; - } - - inline void set_low_alpha(uint32_t i) - { - assert(i <= UINT8_MAX); - m_endpoints[0] = static_cast(i); - } - - inline void set_high_alpha(uint32_t i) - { - assert(i <= UINT8_MAX); - m_endpoints[1] = static_cast(i); - } - - inline bool is_alpha6_block() const { return get_low_alpha() <= get_high_alpha(); } - - uint32_t get_endpoints_as_word() const { return m_endpoints[0] | (m_endpoints[1] << 8); } - uint32_t get_selectors_as_word(uint32_t index) { assert(index < 3); return m_selectors[index * 2] | (m_selectors[index * 2 + 1] << 8); } - - inline uint32_t get_selector(uint32_t x, uint32_t y) const - { - assert((x < 4U) && (y < 4U)); - - uint32_t selector_index = (y * 4) + x; - uint32_t bit_index = selector_index * cDXT5SelectorBits; - - uint32_t byte_index = bit_index >> 3; - uint32_t bit_ofs = bit_index & 7; - - uint32_t v = m_selectors[byte_index]; - if (byte_index < (cTotalSelectorBytes - 1)) - v |= (m_selectors[byte_index + 1] << 8); - - return (v >> bit_ofs) & 7; - } - - inline void set_selector(uint32_t x, uint32_t y, uint32_t val) - { - assert((x < 4U) && (y < 4U) && (val < 8U)); - - uint32_t selector_index = (y * 4) + x; - uint32_t bit_index = selector_index * cDXT5SelectorBits; - - uint32_t byte_index = bit_index >> 3; - uint32_t bit_ofs = bit_index & 7; - - uint32_t v = m_selectors[byte_index]; - if (byte_index < (cTotalSelectorBytes - 1)) - v |= (m_selectors[byte_index + 1] << 8); - - v &= (~(7 << bit_ofs)); - v |= (val << bit_ofs); - - m_selectors[byte_index] = static_cast(v); - if (byte_index < (cTotalSelectorBytes - 1)) - m_selectors[byte_index + 1] = static_cast(v >> 8); - } - - enum { cMaxSelectorValues = 8 }; - - static uint32_t get_block_values6(color32* pDst, uint32_t l, uint32_t h) - { - pDst[0].a = static_cast(l); - pDst[1].a = static_cast(h); - pDst[2].a = static_cast((l * 4 + h) / 5); - pDst[3].a = static_cast((l * 3 + h * 2) / 5); - pDst[4].a = static_cast((l * 2 + h * 3) / 5); - pDst[5].a = static_cast((l + h * 4) / 5); - pDst[6].a = 0; - pDst[7].a = 255; - return 6; - } - - static uint32_t get_block_values8(color32* pDst, uint32_t l, uint32_t h) - { - pDst[0].a = static_cast(l); - pDst[1].a = static_cast(h); - pDst[2].a = static_cast((l * 6 + h) / 7); - pDst[3].a = static_cast((l * 5 + h * 2) / 7); - pDst[4].a = static_cast((l * 4 + h * 3) / 7); - pDst[5].a = static_cast((l * 3 + h * 4) / 7); - pDst[6].a = static_cast((l * 2 + h * 5) / 7); - pDst[7].a = static_cast((l + h * 6) / 7); - return 8; - } - - static uint32_t get_block_values(color32* pDst, uint32_t l, uint32_t h) - { - if (l > h) - return get_block_values8(pDst, l, h); - else - return get_block_values6(pDst, l, h); - } - }; - - static void convert_etc1s_to_dxt5a(dxt5a_block* pDst_block, const endpoint* pEndpoints, const selector* pSelector) - { - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (low_selector == high_selector) - { - uint32_t r; - decoder_etc_block::get_block_color5_r(base_color, inten_table, low_selector, r); - - pDst_block->set_low_alpha(r); - pDst_block->set_high_alpha(r); - pDst_block->m_selectors[0] = 0; - pDst_block->m_selectors[1] = 0; - pDst_block->m_selectors[2] = 0; - pDst_block->m_selectors[3] = 0; - pDst_block->m_selectors[4] = 0; - pDst_block->m_selectors[5] = 0; - return; - } - else if (pSelector->m_num_unique_selectors == 2) - { - color32 block_colors[4]; - - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - const uint32_t r0 = block_colors[low_selector].r; - const uint32_t r1 = block_colors[high_selector].r; - - pDst_block->set_low_alpha(r0); - pDst_block->set_high_alpha(r1); - - // TODO: Optimize this - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - pDst_block->set_selector(x, y, (s == high_selector) ? 1 : 0); - } - } - - return; - } - - uint32_t selector_range_table = 0; - for (selector_range_table = 0; selector_range_table < NUM_DXT5A_SELECTOR_RANGES; selector_range_table++) - if ((low_selector == s_dxt5a_selector_ranges[selector_range_table].m_low) && (high_selector == s_dxt5a_selector_ranges[selector_range_table].m_high)) - break; - if (selector_range_table >= NUM_DXT5A_SELECTOR_RANGES) - selector_range_table = 0; - - const etc1_g_to_dxt5a_conversion* pTable_entry = &g_etc1_g_to_dxt5a[base_color.r + inten_table * 32][selector_range_table]; - - pDst_block->set_low_alpha(pTable_entry->m_lo); - pDst_block->set_high_alpha(pTable_entry->m_hi); - - // TODO: Optimize this (like ETC1->BC1) - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - - uint32_t ds = (pTable_entry->m_trans >> (s * 3)) & 7; - - pDst_block->set_selector(x, y, ds); - } - } - } -#endif //BASISD_SUPPORT_DXT5A - - // PVRTC - -#if BASISD_SUPPORT_PVRTC1 || BASISD_SUPPORT_UASTC - static const uint16_t g_pvrtc_swizzle_table[256] = - { - 0x0000, 0x0001, 0x0004, 0x0005, 0x0010, 0x0011, 0x0014, 0x0015, 0x0040, 0x0041, 0x0044, 0x0045, 0x0050, 0x0051, 0x0054, 0x0055, 0x0100, 0x0101, 0x0104, 0x0105, 0x0110, 0x0111, 0x0114, 0x0115, 0x0140, 0x0141, 0x0144, 0x0145, 0x0150, 0x0151, 0x0154, 0x0155, - 0x0400, 0x0401, 0x0404, 0x0405, 0x0410, 0x0411, 0x0414, 0x0415, 0x0440, 0x0441, 0x0444, 0x0445, 0x0450, 0x0451, 0x0454, 0x0455, 0x0500, 0x0501, 0x0504, 0x0505, 0x0510, 0x0511, 0x0514, 0x0515, 0x0540, 0x0541, 0x0544, 0x0545, 0x0550, 0x0551, 0x0554, 0x0555, - 0x1000, 0x1001, 0x1004, 0x1005, 0x1010, 0x1011, 0x1014, 0x1015, 0x1040, 0x1041, 0x1044, 0x1045, 0x1050, 0x1051, 0x1054, 0x1055, 0x1100, 0x1101, 0x1104, 0x1105, 0x1110, 0x1111, 0x1114, 0x1115, 0x1140, 0x1141, 0x1144, 0x1145, 0x1150, 0x1151, 0x1154, 0x1155, - 0x1400, 0x1401, 0x1404, 0x1405, 0x1410, 0x1411, 0x1414, 0x1415, 0x1440, 0x1441, 0x1444, 0x1445, 0x1450, 0x1451, 0x1454, 0x1455, 0x1500, 0x1501, 0x1504, 0x1505, 0x1510, 0x1511, 0x1514, 0x1515, 0x1540, 0x1541, 0x1544, 0x1545, 0x1550, 0x1551, 0x1554, 0x1555, - 0x4000, 0x4001, 0x4004, 0x4005, 0x4010, 0x4011, 0x4014, 0x4015, 0x4040, 0x4041, 0x4044, 0x4045, 0x4050, 0x4051, 0x4054, 0x4055, 0x4100, 0x4101, 0x4104, 0x4105, 0x4110, 0x4111, 0x4114, 0x4115, 0x4140, 0x4141, 0x4144, 0x4145, 0x4150, 0x4151, 0x4154, 0x4155, - 0x4400, 0x4401, 0x4404, 0x4405, 0x4410, 0x4411, 0x4414, 0x4415, 0x4440, 0x4441, 0x4444, 0x4445, 0x4450, 0x4451, 0x4454, 0x4455, 0x4500, 0x4501, 0x4504, 0x4505, 0x4510, 0x4511, 0x4514, 0x4515, 0x4540, 0x4541, 0x4544, 0x4545, 0x4550, 0x4551, 0x4554, 0x4555, - 0x5000, 0x5001, 0x5004, 0x5005, 0x5010, 0x5011, 0x5014, 0x5015, 0x5040, 0x5041, 0x5044, 0x5045, 0x5050, 0x5051, 0x5054, 0x5055, 0x5100, 0x5101, 0x5104, 0x5105, 0x5110, 0x5111, 0x5114, 0x5115, 0x5140, 0x5141, 0x5144, 0x5145, 0x5150, 0x5151, 0x5154, 0x5155, - 0x5400, 0x5401, 0x5404, 0x5405, 0x5410, 0x5411, 0x5414, 0x5415, 0x5440, 0x5441, 0x5444, 0x5445, 0x5450, 0x5451, 0x5454, 0x5455, 0x5500, 0x5501, 0x5504, 0x5505, 0x5510, 0x5511, 0x5514, 0x5515, 0x5540, 0x5541, 0x5544, 0x5545, 0x5550, 0x5551, 0x5554, 0x5555 - }; - - // Note we can't use simple calculations to convert PVRTC1 encoded endpoint components to/from 8-bits, due to hardware approximations. - static const uint8_t g_pvrtc_5[32] = { 0,8,16,24,33,41,49,57,66,74,82,90,99,107,115,123,132,140,148,156,165,173,181,189,198,206,214,222,231,239,247,255 }; - static const uint8_t g_pvrtc_4[16] = { 0,16,33,49,66,82,99,115,140,156,173,189,206,222,239,255 }; - static const uint8_t g_pvrtc_3[8] = { 0,33,74,107,148,181,222,255 }; - static const uint8_t g_pvrtc_alpha[9] = { 0,34,68,102,136,170,204,238,255 }; - - static const uint8_t g_pvrtc_5_floor[256] = - { - 0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3, - 3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7, - 7,7,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11, - 11,11,11,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,15,15,15,15,15, - 15,15,15,15,16,16,16,16,16,16,16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19, - 19,19,19,19,19,20,20,20,20,20,20,20,20,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,23,23,23, - 23,23,23,23,23,23,24,24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,27,27, - 27,27,27,27,27,27,27,28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,30,30,30,30,30,30,30,30,31 - }; - - static const uint8_t g_pvrtc_5_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4, - 4,4,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,8,8,8,8,8,8, - 8,8,8,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,12,12,12,12,12, - 12,12,12,12,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,16,16,16,16, - 16,16,16,16,16,17,17,17,17,17,17,17,17,18,18,18,18,18,18,18,18,19,19,19,19,19,19,19,19,20,20,20, - 20,20,20,20,20,20,21,21,21,21,21,21,21,21,22,22,22,22,22,22,22,22,23,23,23,23,23,23,23,23,24,24, - 24,24,24,24,24,24,24,25,25,25,25,25,25,25,25,26,26,26,26,26,26,26,26,27,27,27,27,27,27,27,27,28, - 28,28,28,28,28,28,28,28,29,29,29,29,29,29,29,29,30,30,30,30,30,30,30,30,31,31,31,31,31,31,31,31 - }; - - static const uint8_t g_pvrtc_4_floor[256] = - { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9, - 9,9,9,9,9,9,9,9,9,9,9,9,9,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11, - 11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13, - 13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,15 - }; - - static const uint8_t g_pvrtc_4_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8, - 8,8,8,8,8,8,8,8,8,8,8,8,8,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,10,10,10, - 10,10,10,10,10,10,10,10,10,10,10,10,10,10,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,12,12, - 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,13,14, - 14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15,15 - }; - - static const uint8_t g_pvrtc_3_floor[256] = - { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,1,1,1,1,1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7 - }; - - static const uint8_t g_pvrtc_3_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7 - }; - - static const uint8_t g_pvrtc_alpha_floor[256] = - { - 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, - 0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8 - }; - - static const uint8_t g_pvrtc_alpha_ceil[256] = - { - 0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, - 1,1,1,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, - 2,2,2,2,2,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, - 3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4, - 4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5, - 5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6, - 6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7, - 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8 - }; - - struct pvrtc4_block - { - uint32_t m_modulation; - uint32_t m_endpoints; - - pvrtc4_block() : m_modulation(0), m_endpoints(0) { } - - inline bool operator== (const pvrtc4_block& rhs) const - { - return (m_modulation == rhs.m_modulation) && (m_endpoints == rhs.m_endpoints); - } - - inline void clear() - { - m_modulation = 0; - m_endpoints = 0; - } - - inline bool get_block_uses_transparent_modulation() const - { - return (m_endpoints & 1) != 0; - } - - inline void set_block_uses_transparent_modulation(bool m) - { - m_endpoints = (m_endpoints & ~1U) | static_cast(m); - } - - inline bool is_endpoint_opaque(uint32_t endpoint_index) const - { - static const uint32_t s_bitmasks[2] = { 0x8000U, 0x80000000U }; - return (m_endpoints & s_bitmasks[basisu::open_range_check(endpoint_index, 2U)]) != 0; - } - - inline void set_endpoint_opaque(uint32_t endpoint_index, bool opaque) - { - assert(endpoint_index < 2); - static const uint32_t s_bitmasks[2] = { 0x8000U, 0x80000000U }; - if (opaque) - m_endpoints |= s_bitmasks[endpoint_index]; - else - m_endpoints &= ~s_bitmasks[endpoint_index]; - } - - inline color32 get_endpoint_5554(uint32_t endpoint_index) const - { - assert(endpoint_index < 2); - static const uint32_t s_endpoint_mask[2] = { 0xFFFE, 0xFFFF }; - uint32_t packed = (m_endpoints >> (basisu::open_range_check(endpoint_index, 2U) ? 16 : 0)) & s_endpoint_mask[endpoint_index]; - - uint32_t r, g, b, a; - if (packed & 0x8000) - { - // opaque 554 or 555 - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - - if (!endpoint_index) - b |= (b >> 4); - - a = 0xF; - } - else - { - // translucent 4433 or 4443 - r = (packed >> 7) & 0x1E; - g = (packed >> 3) & 0x1E; - b = (packed & 0xF) << 1; - - r |= (r >> 4); - g |= (g >> 4); - - if (!endpoint_index) - b |= (b >> 3); - else - b |= (b >> 4); - - a = (packed >> 11) & 0xE; - } - - assert((r < 32) && (g < 32) && (b < 32) && (a < 16)); - - return color32(r, g, b, a); - } - - inline color32 get_endpoint_8888(uint32_t endpoint_index) const - { - assert(endpoint_index < 2); - static const uint32_t s_endpoint_mask[2] = { 0xFFFE, 0xFFFF }; - uint32_t packed = (m_endpoints >> (basisu::open_range_check(endpoint_index, 2U) ? 16 : 0)) & s_endpoint_mask[endpoint_index]; - - uint32_t r, g, b, a; - if (packed & 0x8000) - { - // opaque 554 or 555 - // 1RRRRRGGGGGBBBBM - // 1RRRRRGGGGGBBBBB - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - - r = g_pvrtc_5[r]; - g = g_pvrtc_5[g]; - - if (!endpoint_index) - b = g_pvrtc_4[b >> 1]; - else - b = g_pvrtc_5[b]; - - a = 255; - } - else - { - // translucent 4433 or 4443 - // 0AAA RRRR GGGG BBBM - // 0AAA RRRR GGGG BBBB - r = (packed >> 8) & 0xF; - g = (packed >> 4) & 0xF; - b = packed & 0xF; - a = (packed >> 12) & 7; - - r = g_pvrtc_4[r]; - g = g_pvrtc_4[g]; - - if (!endpoint_index) - b = g_pvrtc_3[b >> 1]; - else - b = g_pvrtc_4[b]; - - a = g_pvrtc_alpha[a]; - } - - return color32(r, g, b, a); - } - - inline uint32_t get_endpoint_l8(uint32_t endpoint_index) const - { - color32 c(get_endpoint_8888(endpoint_index)); - return c.r + c.g + c.b + c.a; - } - - inline uint32_t get_opaque_endpoint_l0() const - { - uint32_t packed = m_endpoints & 0xFFFE; - - uint32_t r, g, b; - assert(packed & 0x8000); - - // opaque 554 or 555 - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - b |= (b >> 4); - - return r + g + b; - } - - inline uint32_t get_opaque_endpoint_l1() const - { - uint32_t packed = m_endpoints >> 16; - - uint32_t r, g, b; - assert(packed & 0x8000); - - // opaque 554 or 555 - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - - return r + g + b; - } - - static uint32_t get_component_precision_in_bits(uint32_t c, uint32_t endpoint_index, bool opaque_endpoint) - { - static const uint32_t s_comp_prec[4][4] = - { - // R0 G0 B0 A0 R1 G1 B1 A1 - { 4, 4, 3, 3 },{ 4, 4, 4, 3 }, // transparent endpoint - - { 5, 5, 4, 0 },{ 5, 5, 5, 0 } // opaque endpoint - }; - return s_comp_prec[basisu::open_range_check(endpoint_index, 2U) + (opaque_endpoint * 2)][basisu::open_range_check(c, 4U)]; - } - - static color32 get_color_precision_in_bits(uint32_t endpoint_index, bool opaque_endpoint) - { - static const color32 s_color_prec[4] = - { - color32(4, 4, 3, 3), color32(4, 4, 4, 3), // transparent endpoint - color32(5, 5, 4, 0), color32(5, 5, 5, 0) // opaque endpoint - }; - return s_color_prec[basisu::open_range_check(endpoint_index, 2U) + (opaque_endpoint * 2)]; - } - - inline void set_opaque_endpoint_floor(uint32_t endpoint_index, const color32& c) - { - assert(endpoint_index < 2); - const uint32_t m = m_endpoints & 1; - - uint32_t r = g_pvrtc_5_floor[c[0]], g = g_pvrtc_5_floor[c[1]], b = c[2]; - - if (!endpoint_index) - b = g_pvrtc_4_floor[b] << 1; - else - b = g_pvrtc_5_floor[b]; - - // rgba=555 here - assert((r < 32) && (g < 32) && (b < 32)); - - // 1RRRRRGGGGGBBBBM - // 1RRRRRGGGGGBBBBB - - // opaque 554 or 555 - uint32_t packed = 0x8000 | (r << 10) | (g << 5) | b; - if (!endpoint_index) - packed = (packed & ~1) | m; - - assert(packed <= 0xFFFF); - - if (endpoint_index) - m_endpoints = (m_endpoints & 0xFFFFU) | (packed << 16); - else - m_endpoints = (m_endpoints & 0xFFFF0000U) | packed; - } - - inline void set_opaque_endpoint_ceil(uint32_t endpoint_index, const color32& c) - { - assert(endpoint_index < 2); - const uint32_t m = m_endpoints & 1; - - uint32_t r = g_pvrtc_5_ceil[c[0]], g = g_pvrtc_5_ceil[c[1]], b = c[2]; - - if (!endpoint_index) - b = g_pvrtc_4_ceil[b] << 1; - else - b = g_pvrtc_5_ceil[b]; - - // rgba=555 here - assert((r < 32) && (g < 32) && (b < 32)); - - // 1RRRRRGGGGGBBBBM - // 1RRRRRGGGGGBBBBB - - // opaque 554 or 555 - uint32_t packed = 0x8000 | (r << 10) | (g << 5) | b; - if (!endpoint_index) - packed |= m; - - assert(packed <= 0xFFFF); - - if (endpoint_index) - m_endpoints = (m_endpoints & 0xFFFFU) | (packed << 16); - else - m_endpoints = (m_endpoints & 0xFFFF0000U) | packed; - } - - // opaque endpoints: 554 or 555 - // transparent endpoints: 3443 or 3444 - inline void set_endpoint_raw(uint32_t endpoint_index, const color32& c, bool opaque_endpoint) - { - assert(endpoint_index < 2); - const uint32_t m = m_endpoints & 1; - uint32_t r = c[0], g = c[1], b = c[2], a = c[3]; - - uint32_t packed; - - if (opaque_endpoint) - { - if (!endpoint_index) - { - // 554 - // 1RRRRRGGGGGBBBBM - assert((r < 32) && (g < 32) && (b < 16)); - packed = 0x8000 | (r << 10) | (g << 5) | (b << 1) | m; - } - else - { - // 555 - // 1RRRRRGGGGGBBBBB - assert((r < 32) && (g < 32) && (b < 32)); - packed = 0x8000 | (r << 10) | (g << 5) | b; - } - } - else - { - if (!endpoint_index) - { - // 3443 - // 0AAA RRRR GGGG BBBM - assert((r < 16) && (g < 16) && (b < 8) && (a < 8)); - packed = (a << 12) | (r << 8) | (g << 4) | (b << 1) | m; - } - else - { - // 3444 - // 0AAA RRRR GGGG BBBB - assert((r < 16) && (g < 16) && (b < 16) && (a < 8)); - packed = (a << 12) | (r << 8) | (g << 4) | b; - } - } - - assert(packed <= 0xFFFF); - - if (endpoint_index) - m_endpoints = (m_endpoints & 0xFFFFU) | (packed << 16); - else - m_endpoints = (m_endpoints & 0xFFFF0000U) | packed; - } - - inline void set_endpoint_floor(uint32_t endpoint_index, const color32& c) - { - assert(endpoint_index < 2); - - int a = g_pvrtc_alpha_floor[c.a]; - if (a == 8) - { - // 554 or 555 - uint32_t r = g_pvrtc_5_floor[c[0]], g = g_pvrtc_5_floor[c[1]], b = c[2]; - - if (!endpoint_index) - b = g_pvrtc_4_floor[b]; - else - b = g_pvrtc_5_floor[b]; - - set_endpoint_raw(endpoint_index, color32(r, g, b, a), true); - } - else - { - // 4433 or 4443 - uint32_t r = g_pvrtc_4_floor[c[0]], g = g_pvrtc_4_floor[c[1]], b = c[2]; - - if (!endpoint_index) - b = g_pvrtc_3_floor[b]; - else - b = g_pvrtc_4_floor[b]; - - set_endpoint_raw(endpoint_index, color32(r, g, b, a), false); - } - } - - inline void set_endpoint_ceil(uint32_t endpoint_index, const color32& c) - { - assert(endpoint_index < 2); - - int a = g_pvrtc_alpha_ceil[c.a]; - if (a == 8) - { - // 554 or 555 - uint32_t r = g_pvrtc_5_ceil[c[0]], g = g_pvrtc_5_ceil[c[1]], b = c[2]; - - if (!endpoint_index) - b = g_pvrtc_4_ceil[b]; - else - b = g_pvrtc_5_ceil[b]; - - set_endpoint_raw(endpoint_index, color32(r, g, b, a), true); - } - else - { - // 4433 or 4443 - uint32_t r = g_pvrtc_4_ceil[c[0]], g = g_pvrtc_4_ceil[c[1]], b = c[2]; - - if (!endpoint_index) - b = g_pvrtc_3_ceil[b]; - else - b = g_pvrtc_4_ceil[b]; - - set_endpoint_raw(endpoint_index, color32(r, g, b, a), false); - } - } - - inline uint32_t get_modulation(uint32_t x, uint32_t y) const - { - assert((x < 4) && (y < 4)); - return (m_modulation >> ((y * 4 + x) * 2)) & 3; - } - - // Scaled by 8 - inline const uint32_t* get_scaled_modulation_values(bool block_uses_transparent_modulation) const - { - static const uint32_t s_block_scales[2][4] = { { 0, 3, 5, 8 },{ 0, 4, 4, 8 } }; - return s_block_scales[block_uses_transparent_modulation]; - } - - // Scaled by 8 - inline uint32_t get_scaled_modulation(uint32_t x, uint32_t y) const - { - return get_scaled_modulation_values(get_block_uses_transparent_modulation())[get_modulation(x, y)]; - } - - inline void set_modulation(uint32_t x, uint32_t y, uint32_t s) - { - assert((x < 4) && (y < 4) && (s < 4)); - uint32_t n = (y * 4 + x) * 2; - m_modulation = (m_modulation & (~(3 << n))) | (s << n); - assert(get_modulation(x, y) == s); - } - - // Assumes modulation was initialized to 0 - inline void set_modulation_fast(uint32_t x, uint32_t y, uint32_t s) - { - assert((x < 4) && (y < 4) && (s < 4)); - uint32_t n = (y * 4 + x) * 2; - m_modulation |= (s << n); - assert(get_modulation(x, y) == s); - } - }; - -#if 0 - static const uint8_t g_pvrtc_bilinear_weights[16][4] = - { - { 4, 4, 4, 4 }, { 2, 6, 2, 6 }, { 8, 0, 8, 0 }, { 6, 2, 6, 2 }, - { 2, 2, 6, 6 }, { 1, 3, 3, 9 }, { 4, 0, 12, 0 }, { 3, 1, 9, 3 }, - { 8, 8, 0, 0 }, { 4, 12, 0, 0 }, { 16, 0, 0, 0 }, { 12, 4, 0, 0 }, - { 6, 6, 2, 2 }, { 3, 9, 1, 3 }, { 12, 0, 4, 0 }, { 9, 3, 3, 1 }, - }; -#endif - - struct pvrtc1_temp_block - { - decoder_etc_block m_etc1_block; - uint32_t m_pvrtc_endpoints; - }; - - static inline uint32_t get_opaque_endpoint_l0(uint32_t endpoints) - { - uint32_t packed = endpoints; - - uint32_t r, g, b; - assert(packed & 0x8000); - - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 30; - b |= (b >> 4); - - return r + g + b; - } - - static inline uint32_t get_opaque_endpoint_l1(uint32_t endpoints) - { - uint32_t packed = endpoints >> 16; - - uint32_t r, g, b; - assert(packed & 0x8000); - - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - - return r + g + b; - } - - static color32 get_endpoint_8888(uint32_t endpoints, uint32_t endpoint_index) - { - assert(endpoint_index < 2); - static const uint32_t s_endpoint_mask[2] = { 0xFFFE, 0xFFFF }; - uint32_t packed = (endpoints >> (basisu::open_range_check(endpoint_index, 2U) ? 16 : 0)) & s_endpoint_mask[endpoint_index]; - - uint32_t r, g, b, a; - if (packed & 0x8000) - { - // opaque 554 or 555 - // 1RRRRRGGGGGBBBBM - // 1RRRRRGGGGGBBBBB - r = (packed >> 10) & 31; - g = (packed >> 5) & 31; - b = packed & 31; - - r = g_pvrtc_5[r]; - g = g_pvrtc_5[g]; - - if (!endpoint_index) - b = g_pvrtc_4[b >> 1]; - else - b = g_pvrtc_5[b]; - - a = 255; - } - else - { - // translucent 4433 or 4443 - // 0AAA RRRR GGGG BBBM - // 0AAA RRRR GGGG BBBB - r = (packed >> 8) & 0xF; - g = (packed >> 4) & 0xF; - b = packed & 0xF; - a = (packed >> 12) & 7; - - r = g_pvrtc_4[r]; - g = g_pvrtc_4[g]; - - if (!endpoint_index) - b = g_pvrtc_3[b >> 1]; - else - b = g_pvrtc_4[b]; - - a = g_pvrtc_alpha[a]; - } - - return color32(r, g, b, a); - } - - static uint32_t get_endpoint_l8(uint32_t endpoints, uint32_t endpoint_index) - { - color32 c(get_endpoint_8888(endpoints, endpoint_index)); - return c.r + c.g + c.b + c.a; - } -#endif - -#if BASISD_SUPPORT_PVRTC1 - // TODO: Support decoding a non-pow2 ETC1S texture into the next larger pow2 PVRTC texture. - static void fixup_pvrtc1_4_modulation_rgb(const decoder_etc_block* pETC_Blocks, const uint32_t* pPVRTC_endpoints, void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y) - { - const uint32_t x_mask = num_blocks_x - 1; - const uint32_t y_mask = num_blocks_y - 1; - const uint32_t x_bits = basisu::total_bits(x_mask); - const uint32_t y_bits = basisu::total_bits(y_mask); - const uint32_t min_bits = basisu::minimum(x_bits, y_bits); - //const uint32_t max_bits = basisu::maximum(x_bits, y_bits); - const uint32_t swizzle_mask = (1 << (min_bits * 2)) - 1; - - uint32_t block_index = 0; - - // really 3x3 - int e0[4][4], e1[4][4]; - - for (int y = 0; y < static_cast(num_blocks_y); y++) - { - const uint32_t* pE_rows[3]; - - for (int ey = 0; ey < 3; ey++) - { - int by = y + ey - 1; - - const uint32_t* pE = &pPVRTC_endpoints[(by & y_mask) * num_blocks_x]; - - pE_rows[ey] = pE; - - for (int ex = 0; ex < 3; ex++) - { - int bx = 0 + ex - 1; - - const uint32_t e = pE[bx & x_mask]; - - e0[ex][ey] = (get_opaque_endpoint_l0(e) * 255) / 31; - e1[ex][ey] = (get_opaque_endpoint_l1(e) * 255) / 31; - } - } - - const uint32_t y_swizzle = (g_pvrtc_swizzle_table[y >> 8] << 16) | g_pvrtc_swizzle_table[y & 0xFF]; - - for (int x = 0; x < static_cast(num_blocks_x); x++, block_index++) - { - const decoder_etc_block& src_block = pETC_Blocks[block_index]; - - const uint32_t x_swizzle = (g_pvrtc_swizzle_table[x >> 8] << 17) | (g_pvrtc_swizzle_table[x & 0xFF] << 1); - - uint32_t swizzled = x_swizzle | y_swizzle; - if (num_blocks_x != num_blocks_y) - { - swizzled &= swizzle_mask; - - if (num_blocks_x > num_blocks_y) - swizzled |= ((x >> min_bits) << (min_bits * 2)); - else - swizzled |= ((y >> min_bits) << (min_bits * 2)); - } - - pvrtc4_block* pDst_block = static_cast(pDst_blocks) + swizzled; - pDst_block->m_endpoints = pPVRTC_endpoints[block_index]; - - uint32_t base_r = g_etc_5_to_8[src_block.m_differential.m_red1]; - uint32_t base_g = g_etc_5_to_8[src_block.m_differential.m_green1]; - uint32_t base_b = g_etc_5_to_8[src_block.m_differential.m_blue1]; - - const int* pInten_table48 = g_etc1_inten_tables48[src_block.m_differential.m_cw1]; - int by = (base_r + base_g + base_b) * 16; - int block_colors_y_x16[4]; - block_colors_y_x16[0] = by + pInten_table48[2]; - block_colors_y_x16[1] = by + pInten_table48[3]; - block_colors_y_x16[2] = by + pInten_table48[1]; - block_colors_y_x16[3] = by + pInten_table48[0]; - - { - const uint32_t ex = 2; - int bx = x + ex - 1; - bx &= x_mask; - -#define DO_ROW(ey) \ - { \ - const uint32_t e = pE_rows[ey][bx]; \ - e0[ex][ey] = (get_opaque_endpoint_l0(e) * 255) / 31; \ - e1[ex][ey] = (get_opaque_endpoint_l1(e) * 255) / 31; \ - } - - DO_ROW(0); - DO_ROW(1); - DO_ROW(2); -#undef DO_ROW - } - - uint32_t mod = 0; - - uint32_t lookup_x[4]; - -#define DO_LOOKUP(lx) { \ - const uint32_t byte_ofs = 7 - (((lx) * 4) >> 3); \ - const uint32_t lsb_bits = src_block.m_bytes[byte_ofs] >> (((lx) & 1) * 4); \ - const uint32_t msb_bits = src_block.m_bytes[byte_ofs - 2] >> (((lx) & 1) * 4); \ - lookup_x[lx] = (lsb_bits & 0xF) | ((msb_bits & 0xF) << 4); } - - DO_LOOKUP(0); - DO_LOOKUP(1); - DO_LOOKUP(2); - DO_LOOKUP(3); -#undef DO_LOOKUP - -#define DO_PIX(lx, ly, w0, w1, w2, w3) \ - { \ - int ca_l = a0 * w0 + a1 * w1 + a2 * w2 + a3 * w3; \ - int cb_l = b0 * w0 + b1 * w1 + b2 * w2 + b3 * w3; \ - int cl = block_colors_y_x16[g_etc1_x_selector_unpack[ly][lookup_x[lx]]]; \ - int dl = cb_l - ca_l; \ - int vl = cl - ca_l; \ - int p = vl * 16; \ - if (ca_l > cb_l) { p = -p; dl = -dl; } \ - uint32_t m = 0; \ - if (p > 3 * dl) m = (uint32_t)(1 << ((ly) * 8 + (lx) * 2)); \ - if (p > 8 * dl) m = (uint32_t)(2 << ((ly) * 8 + (lx) * 2)); \ - if (p > 13 * dl) m = (uint32_t)(3 << ((ly) * 8 + (lx) * 2)); \ - mod |= m; \ - } - - { - const uint32_t ex = 0, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 0, 4, 4, 4, 4); - DO_PIX(1, 0, 2, 6, 2, 6); - DO_PIX(0, 1, 2, 2, 6, 6); - DO_PIX(1, 1, 1, 3, 3, 9); - } - - { - const uint32_t ex = 1, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 0, 8, 0, 8, 0); - DO_PIX(3, 0, 6, 2, 6, 2); - DO_PIX(2, 1, 4, 0, 12, 0); - DO_PIX(3, 1, 3, 1, 9, 3); - } - - { - const uint32_t ex = 0, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 2, 8, 8, 0, 0); - DO_PIX(1, 2, 4, 12, 0, 0); - DO_PIX(0, 3, 6, 6, 2, 2); - DO_PIX(1, 3, 3, 9, 1, 3); - } - - { - const uint32_t ex = 1, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 2, 16, 0, 0, 0); - DO_PIX(3, 2, 12, 4, 0, 0); - DO_PIX(2, 3, 12, 0, 4, 0); - DO_PIX(3, 3, 9, 3, 3, 1); - } -#undef DO_PIX - - pDst_block->m_modulation = mod; - - e0[0][0] = e0[1][0]; e0[1][0] = e0[2][0]; - e0[0][1] = e0[1][1]; e0[1][1] = e0[2][1]; - e0[0][2] = e0[1][2]; e0[1][2] = e0[2][2]; - - e1[0][0] = e1[1][0]; e1[1][0] = e1[2][0]; - e1[0][1] = e1[1][1]; e1[1][1] = e1[2][1]; - e1[0][2] = e1[1][2]; e1[1][2] = e1[2][2]; - - } // x - } // y - } - - static void fixup_pvrtc1_4_modulation_rgba( - const decoder_etc_block* pETC_Blocks, - const uint32_t* pPVRTC_endpoints, - void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, void *pAlpha_blocks, - const endpoint* pEndpoints, const selector* pSelectors) - { - const uint32_t x_mask = num_blocks_x - 1; - const uint32_t y_mask = num_blocks_y - 1; - const uint32_t x_bits = basisu::total_bits(x_mask); - const uint32_t y_bits = basisu::total_bits(y_mask); - const uint32_t min_bits = basisu::minimum(x_bits, y_bits); - //const uint32_t max_bits = basisu::maximum(x_bits, y_bits); - const uint32_t swizzle_mask = (1 << (min_bits * 2)) - 1; - - uint32_t block_index = 0; - - // really 3x3 - int e0[4][4], e1[4][4]; - - for (int y = 0; y < static_cast(num_blocks_y); y++) - { - const uint32_t* pE_rows[3]; - - for (int ey = 0; ey < 3; ey++) - { - int by = y + ey - 1; - - const uint32_t* pE = &pPVRTC_endpoints[(by & y_mask) * num_blocks_x]; - - pE_rows[ey] = pE; - - for (int ex = 0; ex < 3; ex++) - { - int bx = 0 + ex - 1; - - const uint32_t e = pE[bx & x_mask]; - - e0[ex][ey] = get_endpoint_l8(e, 0); - e1[ex][ey] = get_endpoint_l8(e, 1); - } - } - - const uint32_t y_swizzle = (g_pvrtc_swizzle_table[y >> 8] << 16) | g_pvrtc_swizzle_table[y & 0xFF]; - - for (int x = 0; x < static_cast(num_blocks_x); x++, block_index++) - { - const decoder_etc_block& src_block = pETC_Blocks[block_index]; - - const uint16_t* pSrc_alpha_block = reinterpret_cast(static_cast(pAlpha_blocks) + x + (y * num_blocks_x)); - const endpoint* pAlpha_endpoints = &pEndpoints[pSrc_alpha_block[0]]; - const selector* pAlpha_selectors = &pSelectors[pSrc_alpha_block[1]]; - - const uint32_t x_swizzle = (g_pvrtc_swizzle_table[x >> 8] << 17) | (g_pvrtc_swizzle_table[x & 0xFF] << 1); - - uint32_t swizzled = x_swizzle | y_swizzle; - if (num_blocks_x != num_blocks_y) - { - swizzled &= swizzle_mask; - - if (num_blocks_x > num_blocks_y) - swizzled |= ((x >> min_bits) << (min_bits * 2)); - else - swizzled |= ((y >> min_bits) << (min_bits * 2)); - } - - pvrtc4_block* pDst_block = static_cast(pDst_blocks) + swizzled; - pDst_block->m_endpoints = pPVRTC_endpoints[block_index]; - - uint32_t base_r = g_etc_5_to_8[src_block.m_differential.m_red1]; - uint32_t base_g = g_etc_5_to_8[src_block.m_differential.m_green1]; - uint32_t base_b = g_etc_5_to_8[src_block.m_differential.m_blue1]; - - const int* pInten_table48 = g_etc1_inten_tables48[src_block.m_differential.m_cw1]; - int by = (base_r + base_g + base_b) * 16; - int block_colors_y_x16[4]; - block_colors_y_x16[0] = basisu::clamp(by + pInten_table48[0], 0, 48 * 255); - block_colors_y_x16[1] = basisu::clamp(by + pInten_table48[1], 0, 48 * 255); - block_colors_y_x16[2] = basisu::clamp(by + pInten_table48[2], 0, 48 * 255); - block_colors_y_x16[3] = basisu::clamp(by + pInten_table48[3], 0, 48 * 255); - - uint32_t alpha_base_g = g_etc_5_to_8[pAlpha_endpoints->m_color5.g] * 16; - const int* pInten_table16 = g_etc1_inten_tables16[pAlpha_endpoints->m_inten5]; - int alpha_block_colors_x16[4]; - alpha_block_colors_x16[0] = basisu::clamp(alpha_base_g + pInten_table16[0], 0, 16 * 255); - alpha_block_colors_x16[1] = basisu::clamp(alpha_base_g + pInten_table16[1], 0, 16 * 255); - alpha_block_colors_x16[2] = basisu::clamp(alpha_base_g + pInten_table16[2], 0, 16 * 255); - alpha_block_colors_x16[3] = basisu::clamp(alpha_base_g + pInten_table16[3], 0, 16 * 255); - - // clamp((base_r + base_g + base_b) * 16 + color_inten[s] * 48) + clamp(alpha_base_g * 16 + alpha_inten[as] * 16) - - { - const uint32_t ex = 2; - int bx = x + ex - 1; - bx &= x_mask; - -#define DO_ROW(ey) \ - { \ - const uint32_t e = pE_rows[ey][bx]; \ - e0[ex][ey] = get_endpoint_l8(e, 0); \ - e1[ex][ey] = get_endpoint_l8(e, 1); \ - } - - DO_ROW(0); - DO_ROW(1); - DO_ROW(2); -#undef DO_ROW - } - - uint32_t mod = 0; - -#define DO_PIX(lx, ly, w0, w1, w2, w3) \ - { \ - int ca_l = a0 * w0 + a1 * w1 + a2 * w2 + a3 * w3; \ - int cb_l = b0 * w0 + b1 * w1 + b2 * w2 + b3 * w3; \ - int cl = block_colors_y_x16[(src_block.m_bytes[4 + ly] >> (lx * 2)) & 3] + alpha_block_colors_x16[(pAlpha_selectors->m_selectors[ly] >> (lx * 2)) & 3]; \ - int dl = cb_l - ca_l; \ - int vl = cl - ca_l; \ - int p = vl * 16; \ - if (ca_l > cb_l) { p = -p; dl = -dl; } \ - uint32_t m = 0; \ - if (p > 3 * dl) m = (uint32_t)(1 << ((ly) * 8 + (lx) * 2)); \ - if (p > 8 * dl) m = (uint32_t)(2 << ((ly) * 8 + (lx) * 2)); \ - if (p > 13 * dl) m = (uint32_t)(3 << ((ly) * 8 + (lx) * 2)); \ - mod |= m; \ - } - - { - const uint32_t ex = 0, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 0, 4, 4, 4, 4); - DO_PIX(1, 0, 2, 6, 2, 6); - DO_PIX(0, 1, 2, 2, 6, 6); - DO_PIX(1, 1, 1, 3, 3, 9); - } - - { - const uint32_t ex = 1, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 0, 8, 0, 8, 0); - DO_PIX(3, 0, 6, 2, 6, 2); - DO_PIX(2, 1, 4, 0, 12, 0); - DO_PIX(3, 1, 3, 1, 9, 3); - } - - { - const uint32_t ex = 0, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 2, 8, 8, 0, 0); - DO_PIX(1, 2, 4, 12, 0, 0); - DO_PIX(0, 3, 6, 6, 2, 2); - DO_PIX(1, 3, 3, 9, 1, 3); - } - - { - const uint32_t ex = 1, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 2, 16, 0, 0, 0); - DO_PIX(3, 2, 12, 4, 0, 0); - DO_PIX(2, 3, 12, 0, 4, 0); - DO_PIX(3, 3, 9, 3, 3, 1); - } -#undef DO_PIX - - pDst_block->m_modulation = mod; - - e0[0][0] = e0[1][0]; e0[1][0] = e0[2][0]; - e0[0][1] = e0[1][1]; e0[1][1] = e0[2][1]; - e0[0][2] = e0[1][2]; e0[1][2] = e0[2][2]; - - e1[0][0] = e1[1][0]; e1[1][0] = e1[2][0]; - e1[0][1] = e1[1][1]; e1[1][1] = e1[2][1]; - e1[0][2] = e1[1][2]; e1[1][2] = e1[2][2]; - - } // x - } // y - } -#endif // BASISD_SUPPORT_PVRTC1 - -#if BASISD_SUPPORT_BC7_MODE5 - static dxt_selector_range g_etc1_to_bc7_m5_selector_ranges[] = - { - { 0, 3 }, - { 1, 3 }, - { 0, 2 }, - { 1, 2 }, - { 2, 3 }, - { 0, 1 }, - }; - - const uint32_t NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES = sizeof(g_etc1_to_bc7_m5_selector_ranges) / sizeof(g_etc1_to_bc7_m5_selector_ranges[0]); - - static uint32_t g_etc1_to_bc7_m5_selector_range_index[4][4]; - - const uint32_t NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS = 10; - static const uint8_t g_etc1_to_bc7_m5_selector_mappings[NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS][4] = - { - { 0, 0, 1, 1 }, - { 0, 0, 1, 2 }, - { 0, 0, 1, 3 }, - { 0, 0, 2, 3 }, - { 0, 1, 1, 1 }, - { 0, 1, 2, 2 }, - { 0, 1, 2, 3 }, - { 0, 2, 3, 3 }, - { 1, 2, 2, 2 }, - { 1, 2, 3, 3 }, - }; - - struct etc1_to_bc7_m5_solution - { - uint8_t m_lo; - uint8_t m_hi; - uint16_t m_err; - }; - - static const etc1_to_bc7_m5_solution g_etc1_to_bc7_m5_color[32 * 8 * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS * NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_bc7_m5_color.inc" - }; - - static dxt_selector_range g_etc1_to_bc7_m5a_selector_ranges[] = - { - { 0, 3 }, - { 1, 3 }, - { 0, 2 }, - { 1, 2 }, - { 2, 3 }, - { 0, 1 } - }; - - const uint32_t NUM_ETC1_TO_BC7_M5A_SELECTOR_RANGES = sizeof(g_etc1_to_bc7_m5a_selector_ranges) / sizeof(g_etc1_to_bc7_m5a_selector_ranges[0]); - - static uint32_t g_etc1_to_bc7_m5a_selector_range_index[4][4]; - - struct etc1_g_to_bc7_m5a_conversion - { - uint8_t m_lo, m_hi; - uint8_t m_trans; - }; - - static etc1_g_to_bc7_m5a_conversion g_etc1_g_to_bc7_m5a[8 * 32 * NUM_ETC1_TO_BC7_M5A_SELECTOR_RANGES] = - { - #include "basisu_transcoder_tables_bc7_m5_alpha.inc" - }; - - static inline uint32_t set_block_bits(uint8_t* pBytes, uint32_t val, uint32_t num_bits, uint32_t cur_ofs) - { - assert(num_bits < 32); - assert(val < (1ULL << num_bits)); - - uint32_t mask = static_cast((1ULL << num_bits) - 1); - - while (num_bits) - { - const uint32_t n = basisu::minimum(8 - (cur_ofs & 7), num_bits); - - pBytes[cur_ofs >> 3] &= ~static_cast(mask << (cur_ofs & 7)); - pBytes[cur_ofs >> 3] |= static_cast(val << (cur_ofs & 7)); - - val >>= n; - mask >>= n; - - num_bits -= n; - cur_ofs += n; - } - - return cur_ofs; - } - - struct bc7_mode_5 - { - union - { - struct - { - uint64_t m_mode : 6; - uint64_t m_rot : 2; - - uint64_t m_r0 : 7; - uint64_t m_r1 : 7; - uint64_t m_g0 : 7; - uint64_t m_g1 : 7; - uint64_t m_b0 : 7; - uint64_t m_b1 : 7; - uint64_t m_a0 : 8; - uint64_t m_a1_0 : 6; - - } m_lo; - - uint64_t m_lo_bits; - }; - - union - { - struct - { - uint64_t m_a1_1 : 2; - - // bit 2 - uint64_t m_c00 : 1; - uint64_t m_c10 : 2; - uint64_t m_c20 : 2; - uint64_t m_c30 : 2; - - uint64_t m_c01 : 2; - uint64_t m_c11 : 2; - uint64_t m_c21 : 2; - uint64_t m_c31 : 2; - - uint64_t m_c02 : 2; - uint64_t m_c12 : 2; - uint64_t m_c22 : 2; - uint64_t m_c32 : 2; - - uint64_t m_c03 : 2; - uint64_t m_c13 : 2; - uint64_t m_c23 : 2; - uint64_t m_c33 : 2; - - // bit 33 - uint64_t m_a00 : 1; - uint64_t m_a10 : 2; - uint64_t m_a20 : 2; - uint64_t m_a30 : 2; - - uint64_t m_a01 : 2; - uint64_t m_a11 : 2; - uint64_t m_a21 : 2; - uint64_t m_a31 : 2; - - uint64_t m_a02 : 2; - uint64_t m_a12 : 2; - uint64_t m_a22 : 2; - uint64_t m_a32 : 2; - - uint64_t m_a03 : 2; - uint64_t m_a13 : 2; - uint64_t m_a23 : 2; - uint64_t m_a33 : 2; - - } m_hi; - - uint64_t m_hi_bits; - }; - }; - -#if BASISD_WRITE_NEW_BC7_MODE5_TABLES - static void create_etc1_to_bc7_m5_color_conversion_table() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_bc7_m5_color.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1_to_bc7_m5_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1_to_bc7_m5_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 127; hi++) - { - for (uint32_t lo = 0; lo <= 127; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 1) | (lo >> 6); - colors[3] = (hi << 1) | (hi >> 6); - - colors[1] = (colors[0] * (64 - 21) + colors[3] * 21 + 32) / 64; - colors[2] = (colors[0] * (64 - 43) + colors[3] * 43 + 32) / 64; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1_to_bc7_m5_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); - } - - static void create_etc1_to_bc7_m5_alpha_conversion_table() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_bc7_m5_alpha.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1_TO_BC7_M5A_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1_to_bc7_m5a_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1_to_bc7_m5a_selector_ranges[sr].m_high; - - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - uint32_t best_output_selectors = 0; - - for (uint32_t hi = 0; hi <= 255; hi++) - { - for (uint32_t lo = 0; lo <= 255; lo++) - { - uint32_t colors[4]; - - colors[0] = lo; - colors[3] = hi; - - colors[1] = (colors[0] * (64 - 21) + colors[3] * 21 + 32) / 64; - colors[2] = (colors[0] * (64 - 43) + colors[3] * 43 + 32) / 64; - - uint64_t total_err = 0; - uint32_t output_selectors = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int best_mapping_err = INT_MAX; - int best_k = 0; - for (int k = 0; k < 4; k++) - { - int mapping_err = block_colors[s].g - colors[k]; - mapping_err *= mapping_err; - - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - mapping_err *= 5; - - if (mapping_err < best_mapping_err) - { - best_mapping_err = mapping_err; - best_k = k; - } - } // k - - total_err += best_mapping_err; - output_selectors |= (best_k << (s * 2)); - } // s - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - best_output_selectors = output_selectors; - } - - } // lo - } // hi - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, best_output_selectors); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - - } // sr - } // g - } // inten - - fclose(pFile); - } -#endif // BASISD_WRITE_NEW_BC7_MODE5_TABLES - - struct bc7_m5_match_entry - { - uint8_t m_hi; - uint8_t m_lo; - }; - - static bc7_m5_match_entry g_bc7_m5_equals_1[256] = - { - {0,0},{1,0},{3,0},{4,0},{6,0},{7,0},{9,0},{10,0},{12,0},{13,0},{15,0},{16,0},{18,0},{20,0},{21,0},{23,0}, - {24,0},{26,0},{27,0},{29,0},{30,0},{32,0},{33,0},{35,0},{36,0},{38,0},{39,0},{41,0},{42,0},{44,0},{45,0},{47,0}, - {48,0},{50,0},{52,0},{53,0},{55,0},{56,0},{58,0},{59,0},{61,0},{62,0},{64,0},{65,0},{66,0},{68,0},{69,0},{71,0}, - {72,0},{74,0},{75,0},{77,0},{78,0},{80,0},{82,0},{83,0},{85,0},{86,0},{88,0},{89,0},{91,0},{92,0},{94,0},{95,0}, - {97,0},{98,0},{100,0},{101,0},{103,0},{104,0},{106,0},{107,0},{109,0},{110,0},{112,0},{114,0},{115,0},{117,0},{118,0},{120,0}, - {121,0},{123,0},{124,0},{126,0},{127,0},{127,1},{126,2},{126,3},{127,3},{127,4},{126,5},{126,6},{127,6},{127,7},{126,8},{126,9}, - {127,9},{127,10},{126,11},{126,12},{127,12},{127,13},{126,14},{125,15},{127,15},{126,16},{126,17},{127,17},{127,18},{126,19},{126,20},{127,20}, - {127,21},{126,22},{126,23},{127,23},{127,24},{126,25},{126,26},{127,26},{127,27},{126,28},{126,29},{127,29},{127,30},{126,31},{126,32},{127,32}, - {127,33},{126,34},{126,35},{127,35},{127,36},{126,37},{126,38},{127,38},{127,39},{126,40},{126,41},{127,41},{127,42},{126,43},{126,44},{127,44}, - {127,45},{126,46},{125,47},{127,47},{126,48},{126,49},{127,49},{127,50},{126,51},{126,52},{127,52},{127,53},{126,54},{126,55},{127,55},{127,56}, - {126,57},{126,58},{127,58},{127,59},{126,60},{126,61},{127,61},{127,62},{126,63},{125,64},{126,64},{126,65},{127,65},{127,66},{126,67},{126,68}, - {127,68},{127,69},{126,70},{126,71},{127,71},{127,72},{126,73},{126,74},{127,74},{127,75},{126,76},{125,77},{127,77},{126,78},{126,79},{127,79}, - {127,80},{126,81},{126,82},{127,82},{127,83},{126,84},{126,85},{127,85},{127,86},{126,87},{126,88},{127,88},{127,89},{126,90},{126,91},{127,91}, - {127,92},{126,93},{126,94},{127,94},{127,95},{126,96},{126,97},{127,97},{127,98},{126,99},{126,100},{127,100},{127,101},{126,102},{126,103},{127,103}, - {127,104},{126,105},{126,106},{127,106},{127,107},{126,108},{125,109},{127,109},{126,110},{126,111},{127,111},{127,112},{126,113},{126,114},{127,114},{127,115}, - {126,116},{126,117},{127,117},{127,118},{126,119},{126,120},{127,120},{127,121},{126,122},{126,123},{127,123},{127,124},{126,125},{126,126},{127,126},{127,127} - }; - - static void transcoder_init_bc7_mode5() - { -#if 0 - // This is a little too much work to do at init time, so precompute it. - for (int i = 0; i < 256; i++) - { - int lowest_e = 256; - for (int lo = 0; lo < 128; lo++) - { - for (int hi = 0; hi < 128; hi++) - { - const int lo_e = (lo << 1) | (lo >> 6); - const int hi_e = (hi << 1) | (hi >> 6); - - // Selector 1 - int v = (lo_e * (64 - 21) + hi_e * 21 + 32) >> 6; - int e = abs(v - i); - - if (e < lowest_e) - { - g_bc7_m5_equals_1[i].m_hi = static_cast(hi); - g_bc7_m5_equals_1[i].m_lo = static_cast(lo); - - lowest_e = e; - } - - } // hi - - } // lo - - printf("{%u,%u},", g_bc7_m5_equals_1[i].m_hi, g_bc7_m5_equals_1[i].m_lo); - if ((i & 15) == 15) printf("\n"); - } -#endif - - for (uint32_t i = 0; i < NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES; i++) - { - uint32_t l = g_etc1_to_bc7_m5_selector_ranges[i].m_low; - uint32_t h = g_etc1_to_bc7_m5_selector_ranges[i].m_high; - g_etc1_to_bc7_m5_selector_range_index[l][h] = i; - } - - for (uint32_t i = 0; i < NUM_ETC1_TO_BC7_M5A_SELECTOR_RANGES; i++) - { - uint32_t l = g_etc1_to_bc7_m5a_selector_ranges[i].m_low; - uint32_t h = g_etc1_to_bc7_m5a_selector_ranges[i].m_high; - g_etc1_to_bc7_m5a_selector_range_index[l][h] = i; - } - } - - static void convert_etc1s_to_bc7_m5_color(void* pDst, const endpoint* pEndpoints, const selector* pSelector) - { - bc7_mode_5* pDst_block = static_cast(pDst); - - // First ensure the block is cleared to all 0's - static_cast(pDst)[0] = 0; - static_cast(pDst)[1] = 0; - - // Set alpha to 255 - pDst_block->m_lo.m_mode = 1 << 5; - pDst_block->m_lo.m_a0 = 255; - pDst_block->m_lo.m_a1_0 = 63; - pDst_block->m_hi.m_a1_1 = 3; - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const uint32_t base_color_r = pEndpoints->m_color5.r; - const uint32_t base_color_g = pEndpoints->m_color5.g; - const uint32_t base_color_b = pEndpoints->m_color5.b; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (pSelector->m_num_unique_selectors == 1) - { - // Solid color block - use precomputed tables and set selectors to 1. - uint32_t r, g, b; - decoder_etc_block::get_block_color5(pEndpoints->m_color5, inten_table, low_selector, r, g, b); - - pDst_block->m_lo.m_r0 = g_bc7_m5_equals_1[r].m_lo; - pDst_block->m_lo.m_g0 = g_bc7_m5_equals_1[g].m_lo; - pDst_block->m_lo.m_b0 = g_bc7_m5_equals_1[b].m_lo; - - pDst_block->m_lo.m_r1 = g_bc7_m5_equals_1[r].m_hi; - pDst_block->m_lo.m_g1 = g_bc7_m5_equals_1[g].m_hi; - pDst_block->m_lo.m_b1 = g_bc7_m5_equals_1[b].m_hi; - - set_block_bits((uint8_t*)pDst, 0x2aaaaaab, 31, 66); - return; - } - else if (pSelector->m_num_unique_selectors == 2) - { - // Only one or two unique selectors, so just switch to block truncation coding (BTC) to avoid quality issues on extreme blocks. - color32 block_colors[4]; - - decoder_etc_block::get_block_colors5(block_colors, color32(base_color_r, base_color_g, base_color_b, 255), inten_table); - - const uint32_t r0 = block_colors[low_selector].r; - const uint32_t g0 = block_colors[low_selector].g; - const uint32_t b0 = block_colors[low_selector].b; - - const uint32_t r1 = block_colors[high_selector].r; - const uint32_t g1 = block_colors[high_selector].g; - const uint32_t b1 = block_colors[high_selector].b; - - pDst_block->m_lo.m_r0 = r0 >> 1; - pDst_block->m_lo.m_g0 = g0 >> 1; - pDst_block->m_lo.m_b0 = b0 >> 1; - - pDst_block->m_lo.m_r1 = r1 >> 1; - pDst_block->m_lo.m_g1 = g1 >> 1; - pDst_block->m_lo.m_b1 = b1 >> 1; - - uint32_t output_low_selector = 0, output_bit_offset = 0, output_bits = 0; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - uint32_t os = (s == low_selector) ? output_low_selector : (3 ^ output_low_selector); - - uint32_t num_bits = 2; - - if ((x | y) == 0) - { - if (os & 2) - { - pDst_block->m_lo.m_r0 = r1 >> 1; - pDst_block->m_lo.m_g0 = g1 >> 1; - pDst_block->m_lo.m_b0 = b1 >> 1; - - pDst_block->m_lo.m_r1 = r0 >> 1; - pDst_block->m_lo.m_g1 = g0 >> 1; - pDst_block->m_lo.m_b1 = b0 >> 1; - - output_low_selector = 3; - os = 0; - } - - num_bits = 1; - } - - output_bits |= (os << output_bit_offset); - output_bit_offset += num_bits; - } - } - - set_block_bits((uint8_t*)pDst, output_bits, 31, 66); - return; - } - - const uint32_t selector_range_table = g_etc1_to_bc7_m5_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_bc7_m5_solution* pTable_r = &g_etc1_to_bc7_m5_color[(inten_table * 32 + base_color_r) * (NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS]; - const etc1_to_bc7_m5_solution* pTable_g = &g_etc1_to_bc7_m5_color[(inten_table * 32 + base_color_g) * (NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS]; - const etc1_to_bc7_m5_solution* pTable_b = &g_etc1_to_bc7_m5_color[(inten_table * 32 + base_color_b) * (NUM_ETC1_TO_BC7_M5_SELECTOR_RANGES * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS]; - - uint32_t best_err = UINT_MAX; - uint32_t best_mapping = 0; - - assert(NUM_ETC1_TO_BC7_M5_SELECTOR_MAPPINGS == 10); -#define DO_ITER(m) { uint32_t total_err = pTable_r[m].m_err + pTable_g[m].m_err + pTable_b[m].m_err; if (total_err < best_err) { best_err = total_err; best_mapping = m; } } - DO_ITER(0); DO_ITER(1); DO_ITER(2); DO_ITER(3); DO_ITER(4); - DO_ITER(5); DO_ITER(6); DO_ITER(7); DO_ITER(8); DO_ITER(9); -#undef DO_ITER - - const uint8_t* pSelectors_xlat = &g_etc1_to_bc7_m5_selector_mappings[best_mapping][0]; - - uint32_t s_inv = 0; - if (pSelectors_xlat[pSelector->get_selector(0, 0)] & 2) - { - pDst_block->m_lo.m_r0 = pTable_r[best_mapping].m_hi; - pDst_block->m_lo.m_g0 = pTable_g[best_mapping].m_hi; - pDst_block->m_lo.m_b0 = pTable_b[best_mapping].m_hi; - - pDst_block->m_lo.m_r1 = pTable_r[best_mapping].m_lo; - pDst_block->m_lo.m_g1 = pTable_g[best_mapping].m_lo; - pDst_block->m_lo.m_b1 = pTable_b[best_mapping].m_lo; - - s_inv = 3; - } - else - { - pDst_block->m_lo.m_r0 = pTable_r[best_mapping].m_lo; - pDst_block->m_lo.m_g0 = pTable_g[best_mapping].m_lo; - pDst_block->m_lo.m_b0 = pTable_b[best_mapping].m_lo; - - pDst_block->m_lo.m_r1 = pTable_r[best_mapping].m_hi; - pDst_block->m_lo.m_g1 = pTable_g[best_mapping].m_hi; - pDst_block->m_lo.m_b1 = pTable_b[best_mapping].m_hi; - } - - uint32_t output_bits = 0, output_bit_ofs = 0; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t s = pSelector->get_selector(x, y); - - const uint32_t os = pSelectors_xlat[s] ^ s_inv; - - output_bits |= (os << output_bit_ofs); - - output_bit_ofs += (((x | y) == 0) ? 1 : 2); - } - } - - set_block_bits((uint8_t*)pDst, output_bits, 31, 66); - } - - static void convert_etc1s_to_bc7_m5_alpha(void* pDst, const endpoint* pEndpoints, const selector* pSelector) - { - bc7_mode_5* pDst_block = static_cast(pDst); - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const uint32_t base_color_r = pEndpoints->m_color5.r; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (pSelector->m_num_unique_selectors == 1) - { - uint32_t r; - decoder_etc_block::get_block_color5_r(pEndpoints->m_color5, inten_table, low_selector, r); - - pDst_block->m_lo.m_a0 = r; - pDst_block->m_lo.m_a1_0 = r & 63; - pDst_block->m_hi.m_a1_1 = r >> 6; - - return; - } - else if (pSelector->m_num_unique_selectors == 2) - { - // Only one or two unique selectors, so just switch to block truncation coding (BTC) to avoid quality issues on extreme blocks. - int block_colors[4]; - - decoder_etc_block::get_block_colors5_g(block_colors, pEndpoints->m_color5, inten_table); - - pDst_block->m_lo.m_a0 = block_colors[low_selector]; - pDst_block->m_lo.m_a1_0 = block_colors[high_selector] & 63; - pDst_block->m_hi.m_a1_1 = block_colors[high_selector] >> 6; - - uint32_t output_low_selector = 0, output_bit_offset = 0, output_bits = 0; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t s = pSelector->get_selector(x, y); - uint32_t os = (s == low_selector) ? output_low_selector : (3 ^ output_low_selector); - - uint32_t num_bits = 2; - - if ((x | y) == 0) - { - if (os & 2) - { - pDst_block->m_lo.m_a0 = block_colors[high_selector]; - pDst_block->m_lo.m_a1_0 = block_colors[low_selector] & 63; - pDst_block->m_hi.m_a1_1 = block_colors[low_selector] >> 6; - - output_low_selector = 3; - os = 0; - } - - num_bits = 1; - } - - output_bits |= (os << output_bit_offset); - output_bit_offset += num_bits; - } - } - - set_block_bits((uint8_t*)pDst, output_bits, 31, 97); - return; - } - - const uint32_t selector_range_table = g_etc1_to_bc7_m5a_selector_range_index[low_selector][high_selector]; - - const etc1_g_to_bc7_m5a_conversion* pTable = &g_etc1_g_to_bc7_m5a[inten_table * (32 * NUM_ETC1_TO_BC7_M5A_SELECTOR_RANGES) + base_color_r * NUM_ETC1_TO_BC7_M5A_SELECTOR_RANGES + selector_range_table]; - - pDst_block->m_lo.m_a0 = pTable->m_lo; - pDst_block->m_lo.m_a1_0 = pTable->m_hi & 63; - pDst_block->m_hi.m_a1_1 = pTable->m_hi >> 6; - - uint32_t output_bit_offset = 0, output_bits = 0, selector_trans = pTable->m_trans; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t s = pSelector->get_selector(x, y); - uint32_t os = (selector_trans >> (s * 2)) & 3; - - uint32_t num_bits = 2; - - if ((x | y) == 0) - { - if (os & 2) - { - pDst_block->m_lo.m_a0 = pTable->m_hi; - pDst_block->m_lo.m_a1_0 = pTable->m_lo & 63; - pDst_block->m_hi.m_a1_1 = pTable->m_lo >> 6; - - selector_trans ^= 0xFF; - os ^= 3; - } - - num_bits = 1; - } - - output_bits |= (os << output_bit_offset); - output_bit_offset += num_bits; - } - } - - set_block_bits((uint8_t*)pDst, output_bits, 31, 97); - } -#endif // BASISD_SUPPORT_BC7_MODE5 - -#if BASISD_SUPPORT_ETC2_EAC_A8 || BASISD_SUPPORT_UASTC - static const uint8_t g_etc2_eac_a8_sel4[6] = { 0x92, 0x49, 0x24, 0x92, 0x49, 0x24 }; -#endif - -#if BASISD_SUPPORT_ETC2_EAC_A8 - static void convert_etc1s_to_etc2_eac_a8(eac_block* pDst_block, const endpoint* pEndpoints, const selector* pSelector) - { - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (low_selector == high_selector) - { - uint32_t r; - decoder_etc_block::get_block_color5_r(base_color, inten_table, low_selector, r); - - // Constant alpha block - // Select table 13, use selector 4 (0), set multiplier to 1 and base color g - pDst_block->m_base = r; - pDst_block->m_table = 13; - pDst_block->m_multiplier = 1; - - // selectors are all 4's - memcpy(pDst_block->m_selectors, g_etc2_eac_a8_sel4, sizeof(g_etc2_eac_a8_sel4)); - - return; - } - - uint32_t selector_range_table = 0; - for (selector_range_table = 0; selector_range_table < NUM_ETC2_EAC_SELECTOR_RANGES; selector_range_table++) - if ((low_selector == s_etc2_eac_selector_ranges[selector_range_table].m_low) && (high_selector == s_etc2_eac_selector_ranges[selector_range_table].m_high)) - break; - if (selector_range_table >= NUM_ETC2_EAC_SELECTOR_RANGES) - selector_range_table = 0; - - const etc1_g_to_eac_conversion* pTable_entry = &s_etc1_g_to_etc2_a8[base_color.r + inten_table * 32][selector_range_table]; - - pDst_block->m_base = pTable_entry->m_base; - pDst_block->m_table = pTable_entry->m_table_mul >> 4; - pDst_block->m_multiplier = pTable_entry->m_table_mul & 15; - - uint64_t selector_bits = 0; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - - uint32_t ds = (pTable_entry->m_trans >> (s * 3)) & 7; - - const uint32_t dst_ofs = 45 - (y + x * 4) * 3; - selector_bits |= (static_cast(ds) << dst_ofs); - } - } - - pDst_block->set_selector_bits(selector_bits); - } -#endif // BASISD_SUPPORT_ETC2_EAC_A8 - -#if BASISD_SUPPORT_ETC2_EAC_RG11 - static const etc1_g_to_eac_conversion s_etc1_g_to_etc2_r11[32 * 8][NUM_ETC2_EAC_SELECTOR_RANGES] = - { - {{0,1,3328},{0,1,3328},{0,16,457},{0,16,456}}, - {{0,226,3936},{0,226,3936},{0,17,424},{8,0,472}}, - {{6,178,4012},{6,178,4008},{0,146,501},{16,0,472}}, - {{14,178,4012},{14,178,4008},{8,146,501},{24,0,472}}, - {{23,178,4012},{23,178,4008},{17,146,501},{33,0,472}}, - {{31,178,4012},{31,178,4008},{25,146,501},{41,0,472}}, - {{39,178,4012},{39,178,4008},{33,146,501},{49,0,472}}, - {{47,178,4012},{47,178,4008},{41,146,501},{27,228,496}}, - {{56,178,4012},{56,178,4008},{50,146,501},{36,228,496}}, - {{64,178,4012},{64,178,4008},{58,146,501},{44,228,496}}, - {{72,178,4012},{72,178,4008},{66,146,501},{52,228,496}}, - {{80,178,4012},{80,178,4008},{74,146,501},{60,228,496}}, - {{89,178,4012},{89,178,4008},{83,146,501},{69,228,496}}, - {{97,178,4012},{97,178,4008},{91,146,501},{77,228,496}}, - {{105,178,4012},{105,178,4008},{99,146,501},{85,228,496}}, - {{113,178,4012},{113,178,4008},{107,146,501},{93,228,496}}, - {{122,178,4012},{122,178,4008},{116,146,501},{102,228,496}}, - {{130,178,4012},{130,178,4008},{124,146,501},{110,228,496}}, - {{138,178,4012},{138,178,4008},{132,146,501},{118,228,496}}, - {{146,178,4012},{146,178,4008},{140,146,501},{126,228,496}}, - {{155,178,4012},{155,178,4008},{149,146,501},{135,228,496}}, - {{163,178,4012},{163,178,4008},{157,146,501},{143,228,496}}, - {{171,178,4012},{171,178,4008},{165,146,501},{151,228,496}}, - {{179,178,4012},{179,178,4008},{173,146,501},{159,228,496}}, - {{188,178,4012},{188,178,4008},{182,146,501},{168,228,496}}, - {{196,178,4012},{196,178,4008},{190,146,501},{176,228,496}}, - {{204,178,4012},{204,178,4008},{198,146,501},{184,228,496}}, - {{212,178,4012},{212,178,4008},{206,146,501},{192,228,496}}, - {{221,178,4012},{221,178,4008},{215,146,501},{201,228,496}}, - {{229,178,4012},{229,178,4008},{223,146,501},{209,228,496}}, - {{235,66,4012},{221,100,4008},{231,146,501},{217,228,496}}, - {{211,102,4085},{254,32,4040},{211,102,501},{254,32,456}}, - {{0,2,3328},{0,2,3328},{0,1,320},{0,1,320}}, - {{7,162,3905},{7,162,3904},{0,17,480},{0,17,480}}, - {{15,162,3906},{15,162,3904},{1,117,352},{1,117,352}}, - {{23,162,3906},{23,162,3904},{5,34,500},{4,53,424}}, - {{32,162,3906},{32,162,3904},{14,34,500},{3,69,424}}, - {{40,162,3906},{40,162,3904},{22,34,500},{1,133,496}}, - {{48,162,3906},{48,162,3904},{30,34,500},{4,85,496}}, - {{56,162,3906},{56,162,3904},{38,34,500},{12,85,496}}, - {{65,162,3906},{65,162,3904},{47,34,500},{1,106,424}}, - {{73,162,3906},{73,162,3904},{55,34,500},{9,106,424}}, - {{81,162,3906},{81,162,3904},{63,34,500},{7,234,496}}, - {{89,162,3906},{89,162,3904},{71,34,500},{15,234,496}}, - {{98,162,3906},{98,162,3904},{80,34,500},{24,234,496}}, - {{106,162,3906},{106,162,3904},{88,34,500},{32,234,496}}, - {{114,162,3906},{114,162,3904},{96,34,500},{40,234,496}}, - {{122,162,3906},{122,162,3904},{104,34,500},{48,234,496}}, - {{131,162,3906},{131,162,3904},{113,34,500},{57,234,496}}, - {{139,162,3906},{139,162,3904},{121,34,500},{65,234,496}}, - {{147,162,3906},{147,162,3904},{129,34,500},{73,234,496}}, - {{155,162,3906},{155,162,3904},{137,34,500},{81,234,496}}, - {{164,162,3906},{164,162,3904},{146,34,500},{90,234,496}}, - {{172,162,3906},{172,162,3904},{154,34,500},{98,234,496}}, - {{180,162,3906},{180,162,3904},{162,34,500},{106,234,496}}, - {{188,162,3906},{188,162,3904},{170,34,500},{114,234,496}}, - {{197,162,3906},{197,162,3904},{179,34,500},{123,234,496}}, - {{205,162,3906},{205,162,3904},{187,34,500},{131,234,496}}, - {{213,162,3906},{213,162,3904},{195,34,500},{139,234,496}}, - {{221,162,3906},{221,162,3904},{203,34,500},{147,234,496}}, - {{230,162,3906},{230,162,3904},{212,34,500},{156,234,496}}, - {{238,162,3906},{174,106,4008},{220,34,500},{164,234,496}}, - {{240,178,4001},{182,106,4008},{228,34,500},{172,234,496}}, - {{166,108,4085},{115,31,4080},{166,108,501},{115,31,496}}, - {{1,68,3328},{1,68,3328},{0,1,384},{0,1,384}}, - {{1,51,3968},{1,51,3968},{0,2,384},{0,2,384}}, - {{21,18,3851},{21,18,3848},{1,50,488},{1,50,488}}, - {{26,195,3851},{29,18,3848},{0,67,488},{0,67,488}}, - {{35,195,3851},{38,18,3848},{12,115,488},{0,3,496}}, - {{43,195,3851},{46,18,3848},{20,115,488},{2,6,424}}, - {{51,195,3851},{54,18,3848},{36,66,482},{4,22,424}}, - {{59,195,3851},{62,18,3848},{44,66,482},{3,73,424}}, - {{68,195,3851},{71,18,3848},{53,66,482},{3,22,496}}, - {{76,195,3851},{79,18,3848},{61,66,482},{2,137,496}}, - {{84,195,3851},{87,18,3848},{69,66,482},{1,89,496}}, - {{92,195,3851},{95,18,3848},{77,66,482},{9,89,496}}, - {{101,195,3851},{104,18,3848},{86,66,482},{18,89,496}}, - {{109,195,3851},{112,18,3848},{94,66,482},{26,89,496}}, - {{117,195,3851},{120,18,3848},{102,66,482},{34,89,496}}, - {{125,195,3851},{128,18,3848},{110,66,482},{42,89,496}}, - {{134,195,3851},{137,18,3848},{119,66,482},{51,89,496}}, - {{141,195,3907},{145,18,3848},{127,66,482},{59,89,496}}, - {{149,195,3907},{153,18,3848},{135,66,482},{67,89,496}}, - {{157,195,3907},{161,18,3848},{143,66,482},{75,89,496}}, - {{166,195,3907},{170,18,3848},{152,66,482},{84,89,496}}, - {{174,195,3907},{178,18,3848},{160,66,482},{92,89,496}}, - {{182,195,3907},{186,18,3848},{168,66,482},{100,89,496}}, - {{190,195,3907},{194,18,3848},{176,66,482},{108,89,496}}, - {{199,195,3907},{203,18,3848},{185,66,482},{117,89,496}}, - {{207,195,3907},{211,18,3848},{193,66,482},{125,89,496}}, - {{215,195,3907},{219,18,3848},{201,66,482},{133,89,496}}, - {{223,195,3907},{227,18,3848},{209,66,482},{141,89,496}}, - {{232,195,3907},{168,89,4008},{218,66,482},{150,89,496}}, - {{236,18,3907},{176,89,4008},{226,66,482},{158,89,496}}, - {{158,90,4085},{103,31,4080},{158,90,501},{103,31,496}}, - {{166,90,4085},{111,31,4080},{166,90,501},{111,31,496}}, - {{0,70,3328},{0,70,3328},{0,17,448},{0,17,448}}, - {{0,117,3904},{0,117,3904},{0,35,384},{0,35,384}}, - {{13,165,3905},{13,165,3904},{2,211,480},{2,211,480}}, - {{21,165,3906},{21,165,3904},{1,51,488},{1,51,488}}, - {{30,165,3906},{30,165,3904},{7,61,352},{7,61,352}}, - {{38,165,3906},{38,165,3904},{2,125,352},{2,125,352}}, - {{46,165,3906},{46,165,3904},{1,37,500},{10,125,352}}, - {{54,165,3906},{54,165,3904},{9,37,500},{5,61,424}}, - {{63,165,3906},{63,165,3904},{18,37,500},{1,189,424}}, - {{71,165,3906},{71,165,3904},{26,37,500},{9,189,424}}, - {{79,165,3906},{79,165,3904},{34,37,500},{4,77,424}}, - {{87,165,3906},{87,165,3904},{42,37,500},{12,77,424}}, - {{96,165,3906},{96,165,3904},{51,37,500},{8,93,424}}, - {{104,165,3906},{104,165,3904},{59,37,500},{3,141,496}}, - {{112,165,3906},{112,165,3904},{68,37,500},{11,141,496}}, - {{120,165,3906},{120,165,3904},{76,37,500},{6,93,496}}, - {{129,165,3906},{129,165,3904},{85,37,500},{15,93,496}}, - {{70,254,4012},{137,165,3904},{93,37,500},{23,93,496}}, - {{145,165,3906},{145,165,3904},{101,37,500},{31,93,496}}, - {{86,254,4012},{153,165,3904},{109,37,500},{39,93,496}}, - {{163,165,3906},{162,165,3904},{118,37,500},{48,93,496}}, - {{171,165,3906},{170,165,3904},{126,37,500},{56,93,496}}, - {{179,165,3906},{178,165,3904},{134,37,500},{64,93,496}}, - {{187,165,3906},{187,165,3904},{142,37,500},{72,93,496}}, - {{196,165,3906},{196,165,3904},{151,37,500},{81,93,496}}, - {{204,165,3906},{204,165,3904},{159,37,500},{89,93,496}}, - {{212,165,3906},{136,77,4008},{167,37,500},{97,93,496}}, - {{220,165,3906},{131,93,4008},{175,37,500},{105,93,496}}, - {{214,181,4001},{140,93,4008},{184,37,500},{114,93,496}}, - {{222,181,4001},{148,93,4008},{192,37,500},{122,93,496}}, - {{115,95,4085},{99,31,4080},{115,95,501},{99,31,496}}, - {{123,95,4085},{107,31,4080},{123,95,501},{107,31,496}}, - {{0,102,3840},{0,102,3840},{0,18,384},{0,18,384}}, - {{5,167,3904},{5,167,3904},{0,13,256},{0,13,256}}, - {{4,54,3968},{4,54,3968},{1,67,448},{1,67,448}}, - {{30,198,3850},{30,198,3848},{0,3,480},{0,3,480}}, - {{39,198,3850},{39,198,3848},{3,52,488},{3,52,488}}, - {{47,198,3851},{47,198,3848},{3,4,488},{3,4,488}}, - {{55,198,3851},{55,198,3848},{1,70,488},{1,70,488}}, - {{53,167,3906},{63,198,3848},{3,22,488},{3,22,488}}, - {{62,167,3906},{72,198,3848},{24,118,488},{0,6,496}}, - {{70,167,3906},{80,198,3848},{32,118,488},{2,89,488}}, - {{78,167,3906},{88,198,3848},{40,118,488},{1,73,496}}, - {{86,167,3906},{96,198,3848},{48,118,488},{0,28,424}}, - {{95,167,3906},{105,198,3848},{57,118,488},{9,28,424}}, - {{103,167,3906},{113,198,3848},{65,118,488},{5,108,496}}, - {{111,167,3906},{121,198,3848},{73,118,488},{13,108,496}}, - {{119,167,3906},{129,198,3848},{81,118,488},{21,108,496}}, - {{128,167,3906},{138,198,3848},{90,118,488},{6,28,496}}, - {{136,167,3906},{146,198,3848},{98,118,488},{14,28,496}}, - {{145,167,3906},{154,198,3848},{106,118,488},{22,28,496}}, - {{153,167,3906},{162,198,3848},{114,118,488},{30,28,496}}, - {{162,167,3906},{171,198,3848},{123,118,488},{39,28,496}}, - {{170,167,3906},{179,198,3848},{131,118,488},{47,28,496}}, - {{178,167,3906},{187,198,3848},{139,118,488},{55,28,496}}, - {{186,167,3906},{195,198,3848},{147,118,488},{63,28,496}}, - {{194,167,3906},{120,12,4008},{156,118,488},{72,28,496}}, - {{206,198,3907},{116,28,4008},{164,118,488},{80,28,496}}, - {{214,198,3907},{124,28,4008},{172,118,488},{88,28,496}}, - {{222,198,3395},{132,28,4008},{180,118,488},{96,28,496}}, - {{207,134,4001},{141,28,4008},{189,118,488},{105,28,496}}, - {{95,30,4085},{86,31,4080},{95,30,501},{86,31,496}}, - {{103,30,4085},{94,31,4080},{103,30,501},{94,31,496}}, - {{111,30,4085},{102,31,4080},{111,30,501},{102,31,496}}, - {{0,104,3840},{0,104,3840},{0,18,448},{0,18,448}}, - {{4,39,3904},{4,39,3904},{0,4,384},{0,4,384}}, - {{0,56,3968},{0,56,3968},{0,84,448},{0,84,448}}, - {{6,110,3328},{6,110,3328},{0,20,448},{0,20,448}}, - {{41,200,3850},{41,200,3848},{1,4,480},{1,4,480}}, - {{49,200,3850},{49,200,3848},{1,8,416},{1,8,416}}, - {{57,200,3851},{57,200,3848},{1,38,488},{1,38,488}}, - {{65,200,3851},{65,200,3848},{1,120,488},{1,120,488}}, - {{74,200,3851},{74,200,3848},{2,72,488},{2,72,488}}, - {{68,6,3907},{82,200,3848},{2,24,488},{2,24,488}}, - {{77,6,3907},{90,200,3848},{26,120,488},{10,24,488}}, - {{97,63,3330},{98,200,3848},{34,120,488},{2,8,496}}, - {{106,63,3330},{107,200,3848},{43,120,488},{3,92,488}}, - {{114,63,3330},{115,200,3848},{51,120,488},{11,92,488}}, - {{122,63,3330},{123,200,3848},{59,120,488},{7,76,496}}, - {{130,63,3330},{131,200,3848},{67,120,488},{15,76,496}}, - {{139,63,3330},{140,200,3848},{76,120,488},{24,76,496}}, - {{147,63,3330},{148,200,3848},{84,120,488},{32,76,496}}, - {{155,63,3330},{156,200,3848},{92,120,488},{40,76,496}}, - {{164,63,3330},{164,200,3848},{100,120,488},{48,76,496}}, - {{173,63,3330},{173,200,3848},{109,120,488},{57,76,496}}, - {{184,6,3851},{181,200,3848},{117,120,488},{65,76,496}}, - {{192,6,3851},{133,28,3936},{125,120,488},{73,76,496}}, - {{189,200,3907},{141,28,3936},{133,120,488},{81,76,496}}, - {{198,200,3907},{138,108,4000},{142,120,488},{90,76,496}}, - {{206,200,3907},{146,108,4000},{150,120,488},{98,76,496}}, - {{214,200,3395},{154,108,4000},{158,120,488},{106,76,496}}, - {{190,136,4001},{162,108,4000},{166,120,488},{114,76,496}}, - {{123,30,4076},{87,15,4080},{123,30,492},{87,15,496}}, - {{117,110,4084},{80,31,4080},{117,110,500},{80,31,496}}, - {{125,110,4084},{88,31,4080},{125,110,500},{88,31,496}}, - {{133,110,4084},{96,31,4080},{133,110,500},{96,31,496}}, - {{9,56,3904},{9,56,3904},{0,67,448},{0,67,448}}, - {{1,8,3904},{1,8,3904},{1,84,448},{1,84,448}}, - {{1,124,3904},{1,124,3904},{0,39,384},{0,39,384}}, - {{9,124,3904},{9,124,3904},{1,4,448},{1,4,448}}, - {{6,76,3904},{6,76,3904},{0,70,448},{0,70,448}}, - {{62,6,3859},{62,6,3856},{2,38,480},{2,38,480}}, - {{70,6,3859},{70,6,3856},{5,43,416},{5,43,416}}, - {{78,6,3859},{78,6,3856},{2,11,416},{2,11,416}}, - {{87,6,3859},{87,6,3856},{0,171,488},{0,171,488}}, - {{67,8,3906},{95,6,3856},{8,171,488},{8,171,488}}, - {{75,8,3907},{103,6,3856},{5,123,488},{5,123,488}}, - {{83,8,3907},{111,6,3856},{2,75,488},{2,75,488}}, - {{92,8,3907},{120,6,3856},{0,27,488},{0,27,488}}, - {{100,8,3907},{128,6,3856},{8,27,488},{8,27,488}}, - {{120,106,3843},{136,6,3856},{99,6,387},{16,27,488}}, - {{128,106,3843},{144,6,3856},{107,6,387},{2,11,496}}, - {{137,106,3843},{153,6,3856},{117,6,387},{11,11,496}}, - {{145,106,3843},{161,6,3856},{125,6,387},{19,11,496}}, - {{163,8,3851},{137,43,3904},{133,6,387},{27,11,496}}, - {{171,8,3851},{145,43,3904},{141,6,387},{35,11,496}}, - {{180,8,3851},{110,11,4000},{150,6,387},{44,11,496}}, - {{188,8,3851},{118,11,4000},{158,6,387},{52,11,496}}, - {{172,72,3907},{126,11,4000},{166,6,387},{60,11,496}}, - {{174,6,3971},{134,11,4000},{174,6,387},{68,11,496}}, - {{183,6,3971},{143,11,4000},{183,6,387},{77,11,496}}, - {{191,6,3971},{151,11,4000},{191,6,387},{85,11,496}}, - {{199,6,3971},{159,11,4000},{199,6,387},{93,11,496}}, - {{92,12,4084},{69,15,4080},{92,12,500},{69,15,496}}, - {{101,12,4084},{78,15,4080},{101,12,500},{78,15,496}}, - {{110,12,4084},{86,15,4080},{110,12,500},{86,15,496}}, - {{118,12,4084},{79,31,4080},{118,12,500},{79,31,496}}, - {{126,12,4084},{87,31,4080},{126,12,500},{87,31,496}}, - {{71,8,3602},{71,8,3600},{2,21,384},{2,21,384}}, - {{79,8,3611},{79,8,3608},{0,69,448},{0,69,448}}, - {{87,8,3611},{87,8,3608},{0,23,384},{0,23,384}}, - {{95,8,3611},{95,8,3608},{1,5,448},{1,5,448}}, - {{104,8,3611},{104,8,3608},{0,88,448},{0,88,448}}, - {{112,8,3611},{112,8,3608},{0,72,448},{0,72,448}}, - {{120,8,3611},{121,8,3608},{36,21,458},{36,21,456}}, - {{133,47,3091},{129,8,3608},{44,21,458},{44,21,456}}, - {{142,47,3091},{138,8,3608},{53,21,459},{53,21,456}}, - {{98,12,3850},{98,12,3848},{61,21,459},{61,21,456}}, - {{106,12,3850},{106,12,3848},{10,92,480},{69,21,456}}, - {{114,12,3851},{114,12,3848},{18,92,480},{77,21,456}}, - {{123,12,3851},{123,12,3848},{3,44,488},{86,21,456}}, - {{95,12,3906},{95,12,3904},{11,44,488},{94,21,456}}, - {{103,12,3906},{103,12,3904},{19,44,488},{102,21,456}}, - {{111,12,3907},{111,12,3904},{27,44,489},{110,21,456}}, - {{120,12,3907},{120,12,3904},{36,44,489},{119,21,456}}, - {{128,12,3907},{128,12,3904},{44,44,489},{127,21,456}}, - {{136,12,3907},{136,12,3904},{52,44,489},{135,21,456}}, - {{144,12,3907},{144,12,3904},{60,44,490},{144,21,456}}, - {{153,12,3907},{153,12,3904},{69,44,490},{153,21,456}}, - {{161,12,3395},{149,188,3968},{77,44,490},{161,21,456}}, - {{169,12,3395},{199,21,3928},{85,44,490},{169,21,456}}, - {{113,95,4001},{202,69,3992},{125,8,483},{177,21,456}}, - {{122,95,4001},{201,21,3984},{134,8,483},{186,21,456}}, - {{143,8,4067},{209,21,3984},{142,8,483},{194,21,456}}, - {{151,8,4067},{47,15,4080},{151,8,483},{47,15,496}}, - {{159,8,4067},{55,15,4080},{159,8,483},{55,15,496}}, - {{168,8,4067},{64,15,4080},{168,8,483},{64,15,496}}, - {{160,40,4075},{72,15,4080},{160,40,491},{72,15,496}}, - {{168,40,4075},{80,15,4080},{168,40,491},{80,15,496}}, - {{144,8,4082},{88,15,4080},{144,8,498},{88,15,496}}, - }; - - static void convert_etc1s_to_etc2_eac_r11(eac_block* pDst_block, const endpoint* pEndpoints, const selector* pSelector) - { - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (low_selector == high_selector) - { - uint32_t r; - decoder_etc_block::get_block_color5_r(base_color, inten_table, low_selector, r); - - // Constant alpha block - // Select table 13, use selector 4 (0), set multiplier to 1 and base color r - pDst_block->m_base = r; - pDst_block->m_table = 13; - pDst_block->m_multiplier = 1; - - // selectors are all 4's - static const uint8_t s_etc2_eac_r11_sel4[6] = { 0x92, 0x49, 0x24, 0x92, 0x49, 0x24 }; - memcpy(pDst_block->m_selectors, s_etc2_eac_r11_sel4, sizeof(s_etc2_eac_r11_sel4)); - - return; - } - - uint32_t selector_range_table = 0; - for (selector_range_table = 0; selector_range_table < NUM_ETC2_EAC_SELECTOR_RANGES; selector_range_table++) - if ((low_selector == s_etc2_eac_selector_ranges[selector_range_table].m_low) && (high_selector == s_etc2_eac_selector_ranges[selector_range_table].m_high)) - break; - if (selector_range_table >= NUM_ETC2_EAC_SELECTOR_RANGES) - selector_range_table = 0; - - const etc1_g_to_eac_conversion* pTable_entry = &s_etc1_g_to_etc2_r11[base_color.r + inten_table * 32][selector_range_table]; - - pDst_block->m_base = pTable_entry->m_base; - pDst_block->m_table = pTable_entry->m_table_mul >> 4; - pDst_block->m_multiplier = pTable_entry->m_table_mul & 15; - - uint64_t selector_bits = 0; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - - uint32_t ds = (pTable_entry->m_trans >> (s * 3)) & 7; - - const uint32_t dst_ofs = 45 - (y + x * 4) * 3; - selector_bits |= (static_cast(ds) << dst_ofs); - } - } - - pDst_block->set_selector_bits(selector_bits); - } -#endif // BASISD_SUPPORT_ETC2_EAC_RG11 - -// ASTC - struct etc1_to_astc_solution - { - uint8_t m_lo; - uint8_t m_hi; - uint16_t m_err; - }; - -#if BASISD_SUPPORT_ASTC - static dxt_selector_range g_etc1_to_astc_selector_ranges[] = - { - { 0, 3 }, - - { 1, 3 }, - { 0, 2 }, - - { 1, 2 }, - - { 2, 3 }, - { 0, 1 }, - }; - - const uint32_t NUM_ETC1_TO_ASTC_SELECTOR_RANGES = sizeof(g_etc1_to_astc_selector_ranges) / sizeof(g_etc1_to_astc_selector_ranges[0]); - - static uint32_t g_etc1_to_astc_selector_range_index[4][4]; - - const uint32_t NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS = 10; - static const uint8_t g_etc1_to_astc_selector_mappings[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS][4] = - { - { 0, 0, 1, 1 }, - { 0, 0, 1, 2 }, - { 0, 0, 1, 3 }, - { 0, 0, 2, 3 }, - { 0, 1, 1, 1 }, - { 0, 1, 2, 2 }, - { 0, 1, 2, 3 }, - { 0, 2, 3, 3 }, - { 1, 2, 2, 2 }, - { 1, 2, 3, 3 }, - }; - - static const etc1_to_astc_solution g_etc1_to_astc[32 * 8 * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS * NUM_ETC1_TO_ASTC_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_astc.inc" - }; - - // The best selector mapping to use given a base base+inten table and used selector range for converting grayscale data. - static uint8_t g_etc1_to_astc_best_grayscale_mapping[32][8][NUM_ETC1_TO_ASTC_SELECTOR_RANGES]; - -#if BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY - static const etc1_to_astc_solution g_etc1_to_astc_0_255[32 * 8 * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS * NUM_ETC1_TO_ASTC_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_astc_0_255.inc" - }; - static uint8_t g_etc1_to_astc_best_grayscale_mapping_0_255[32][8][NUM_ETC1_TO_ASTC_SELECTOR_RANGES]; -#endif - - static uint32_t g_ise_to_unquant[48]; - -#if BASISD_WRITE_NEW_ASTC_TABLES - static void create_etc1_to_astc_conversion_table_0_47() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_astc.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1_TO_ASTC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1_to_astc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1_to_astc_selector_ranges[sr].m_high; - - uint32_t mapping_best_low[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - uint32_t mapping_best_high[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - uint64_t mapping_best_err[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - uint64_t highest_best_err = 0; - - for (uint32_t m = 0; m < NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 47; hi++) - { - for (uint32_t lo = 0; lo <= 47; lo++) - { - uint32_t colors[4]; - - for (uint32_t s = 0; s < 4; s++) - { - uint32_t s_scaled = s | (s << 2) | (s << 4); - if (s_scaled > 32) - s_scaled++; - - uint32_t c0 = g_ise_to_unquant[lo] | (g_ise_to_unquant[lo] << 8); - uint32_t c1 = g_ise_to_unquant[hi] | (g_ise_to_unquant[hi] << 8); - colors[s] = ((c0 * (64 - s_scaled) + c1 * s_scaled + 32) / 64) >> 8; - } - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1_to_astc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 8; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - mapping_best_low[m] = best_lo; - mapping_best_high[m] = best_hi; - mapping_best_err[m] = best_err; - highest_best_err = basisu::maximum(highest_best_err, best_err); - - } // m - - for (uint32_t m = 0; m < NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS; m++) - { - uint64_t err = mapping_best_err[m]; - - err = basisu::minimum(err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", mapping_best_low[m], mapping_best_high[m], (uint32_t)err); - - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - - } // sr - } // g - } // inten - - fclose(pFile); - } - - static void create_etc1_to_astc_conversion_table_0_255() - { - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_astc_0_255.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1_TO_ASTC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1_to_astc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1_to_astc_selector_ranges[sr].m_high; - - uint32_t mapping_best_low[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - uint32_t mapping_best_high[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - uint64_t mapping_best_err[NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - uint64_t highest_best_err = 0; - - for (uint32_t m = 0; m < NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 255; hi++) - { - for (uint32_t lo = 0; lo <= 255; lo++) - { - uint32_t colors[4]; - - for (uint32_t s = 0; s < 4; s++) - { - uint32_t s_scaled = s | (s << 2) | (s << 4); - if (s_scaled > 32) - s_scaled++; - - uint32_t c0 = lo | (lo << 8); - uint32_t c1 = hi | (hi << 8); - colors[s] = ((c0 * (64 - s_scaled) + c1 * s_scaled + 32) / 64) >> 8; - } - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1_to_astc_selector_mappings[m][s]]; - - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - int err_scale = 1; - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 8; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - mapping_best_low[m] = best_lo; - mapping_best_high[m] = best_hi; - mapping_best_err[m] = best_err; - highest_best_err = basisu::maximum(highest_best_err, best_err); - } // m - - for (uint32_t m = 0; m < NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS; m++) - { - uint64_t err = mapping_best_err[m]; - - err = basisu::minimum(err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", mapping_best_low[m], mapping_best_high[m], (uint32_t)err); - - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - - } // sr - } // g - } // inten - - fclose(pFile); - } -#endif - -#endif - -#if BASISD_SUPPORT_UASTC || BASISD_SUPPORT_ASTC - // Table encodes 5 trits to 8 output bits. 3^5 entries. - // Inverse of the trit bit manipulation process in https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#astc-integer-sequence-encoding - static const uint8_t g_astc_trit_encode[243] = { 0, 1, 2, 4, 5, 6, 8, 9, 10, 16, 17, 18, 20, 21, 22, 24, 25, 26, 3, 7, 11, 19, 23, 27, 12, 13, 14, 32, 33, 34, 36, 37, 38, 40, 41, 42, 48, 49, 50, 52, 53, 54, 56, 57, 58, 35, 39, - 43, 51, 55, 59, 44, 45, 46, 64, 65, 66, 68, 69, 70, 72, 73, 74, 80, 81, 82, 84, 85, 86, 88, 89, 90, 67, 71, 75, 83, 87, 91, 76, 77, 78, 128, 129, 130, 132, 133, 134, 136, 137, 138, 144, 145, 146, 148, 149, 150, 152, 153, 154, - 131, 135, 139, 147, 151, 155, 140, 141, 142, 160, 161, 162, 164, 165, 166, 168, 169, 170, 176, 177, 178, 180, 181, 182, 184, 185, 186, 163, 167, 171, 179, 183, 187, 172, 173, 174, 192, 193, 194, 196, 197, 198, 200, 201, 202, - 208, 209, 210, 212, 213, 214, 216, 217, 218, 195, 199, 203, 211, 215, 219, 204, 205, 206, 96, 97, 98, 100, 101, 102, 104, 105, 106, 112, 113, 114, 116, 117, 118, 120, 121, 122, 99, 103, 107, 115, 119, 123, 108, 109, 110, 224, - 225, 226, 228, 229, 230, 232, 233, 234, 240, 241, 242, 244, 245, 246, 248, 249, 250, 227, 231, 235, 243, 247, 251, 236, 237, 238, 28, 29, 30, 60, 61, 62, 92, 93, 94, 156, 157, 158, 188, 189, 190, 220, 221, 222, 31, 63, 95, 159, - 191, 223, 124, 125, 126 }; - - // Extracts bits [low,high] - static inline uint32_t astc_extract_bits(uint32_t bits, int low, int high) - { - return (bits >> low) & ((1 << (high - low + 1)) - 1); - } - - // Writes bits to output in an endian safe way - static inline void astc_set_bits(uint32_t* pOutput, int& bit_pos, uint32_t value, uint32_t total_bits) - { - uint8_t* pBytes = reinterpret_cast(pOutput); - - while (total_bits) - { - const uint32_t bits_to_write = basisu::minimum(total_bits, 8 - (bit_pos & 7)); - - pBytes[bit_pos >> 3] |= static_cast(value << (bit_pos & 7)); - - bit_pos += bits_to_write; - total_bits -= bits_to_write; - value >>= bits_to_write; - } - } - - // Encodes 5 values to output, usable for any range that uses trits and bits - static void astc_encode_trits(uint32_t* pOutput, const uint8_t* pValues, int& bit_pos, int n) - { - // First extract the trits and the bits from the 5 input values - int trits = 0, bits[5]; - const uint32_t bit_mask = (1 << n) - 1; - for (int i = 0; i < 5; i++) - { - static const int s_muls[5] = { 1, 3, 9, 27, 81 }; - - const int t = pValues[i] >> n; - - trits += t * s_muls[i]; - bits[i] = pValues[i] & bit_mask; - } - - // Encode the trits, by inverting the bit manipulations done by the decoder, converting 5 trits into 8-bits. - // See https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#astc-integer-sequence-encoding - - assert(trits < 243); - const int T = g_astc_trit_encode[trits]; - - // Now interleave the 8 encoded trit bits with the bits to form the encoded output. See table 94. - astc_set_bits(pOutput, bit_pos, bits[0] | (astc_extract_bits(T, 0, 1) << n) | (bits[1] << (2 + n)), n * 2 + 2); - - astc_set_bits(pOutput, bit_pos, astc_extract_bits(T, 2, 3) | (bits[2] << 2) | (astc_extract_bits(T, 4, 4) << (2 + n)) | (bits[3] << (3 + n)) | (astc_extract_bits(T, 5, 6) << (3 + n * 2)) | - (bits[4] << (5 + n * 2)) | (astc_extract_bits(T, 7, 7) << (5 + n * 3)), n * 3 + 6); - } -#endif // #if BASISD_SUPPORT_UASTC || BASISD_SUPPORT_ASTC - -#if BASISD_SUPPORT_ASTC - struct astc_block_params - { - // 2 groups of 5, but only a max of 8 are used (RRGGBBAA00) - uint8_t m_endpoints[10]; - uint8_t m_weights[32]; - }; - - // Packs a single format ASTC block using Color Endpoint Mode 12 (LDR RGBA direct), endpoint BISE range 13, 2-bit weights (range 2). - // We're always going to output blocks containing alpha, even if the input doesn't have alpha, for simplicity. - // Each block always has 4x4 weights, uses range 13 BISE encoding on the endpoints (0-47), and each weight ranges from 0-3. This encoding should be roughly equal in quality vs. BC1 for color. - // 8 total endpoints, stored as RGBA LH LH LH LH order, each ranging from 0-47. - // Note the input [0,47] endpoint values are not linear - they are encoded as outlined in the ASTC spec: - // https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#astc-endpoint-unquantization - // 32 total weights, stored as 16 CA CA, each ranging from 0-3. - static void astc_pack_block_cem_12_weight_range2(uint32_t *pOutput, const astc_block_params* pBlock) - { - uint8_t* pBytes = reinterpret_cast(pOutput); - - // Write constant block mode, color component selector, number of partitions, color endpoint mode - // https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#_block_mode - pBytes[0] = 0x42; pBytes[1] = 0x84; pBytes[2] = 0x01; pBytes[3] = 0x00; - pBytes[4] = 0x00; pBytes[5] = 0x00; pBytes[6] = 0x00; pBytes[7] = 0xc0; - - pOutput[2] = 0; - pOutput[3] = 0; - - // Pack 8 endpoints (each ranging between [0,47]) using BISE starting at bit 17 - int bit_pos = 17; - astc_encode_trits(pOutput, pBlock->m_endpoints, bit_pos, 4); - astc_encode_trits(pOutput, pBlock->m_endpoints + 5, bit_pos, 4); - - // Pack 32 2-bit weights, which are stored from the top down into the block in opposite bit order. - - for (uint32_t i = 0; i < 32; i++) - { - static const uint8_t s_reverse_bits[4] = { 0, 2, 1, 3 }; - const uint32_t ofs = 126 - (i * 2); - pBytes[ofs >> 3] |= (s_reverse_bits[pBlock->m_weights[i]] << (ofs & 7)); - } - } - - // CEM mode 12 (LDR RGBA Direct), 8-bit endpoints, 1-bit weights - // This ASTC mode is basically block truncation coding (BTC) using 1-bit weights and 8-bit/component endpoints - very convenient. - static void astc_pack_block_cem_12_weight_range0(uint32_t* pOutput, const astc_block_params* pBlock) - { - uint8_t* pBytes = reinterpret_cast(pOutput); - - // Write constant block mode, color component selector, number of partitions, color endpoint mode - // https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#_block_mode - pBytes[0] = 0x41; pBytes[1] = 0x84; pBytes[2] = 0x01; pBytes[3] = 0x00; - pOutput[1] = 0; - pBytes[8] = 0x00; pBytes[9] = 0x00; pBytes[10] = 0x00; pBytes[11] = 0xc0; - pOutput[3] = 0; - - // Pack 8 endpoints (each ranging between [0,255]) as 8-bits starting at bit 17 - int bit_pos = 17; - for (uint32_t i = 0; i < 8; i++) - astc_set_bits(pOutput, bit_pos, pBlock->m_endpoints[i], 8); - - // Pack 32 1-bit weights, which are stored from the top down into the block in opposite bit order. - for (uint32_t i = 0; i < 32; i++) - { - const uint32_t ofs = 127 - i; - pBytes[ofs >> 3] |= (pBlock->m_weights[i] << (ofs & 7)); - } - } - -#if BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY - // Optional 8-bit endpoint packing functions. - - // CEM mode 4 (LDR Luminance+Alpha Direct), 8-bit endpoints, 2 bit weights - static void astc_pack_block_cem_4_weight_range2(uint32_t* pOutput, const astc_block_params* pBlock) - { - uint8_t* pBytes = reinterpret_cast(pOutput); - - // Write constant block mode, color component selector, number of partitions, color endpoint mode - // https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#_block_mode - pBytes[0] = 0x42; pBytes[1] = 0x84; pBytes[2] = 0x00; pBytes[3] = 0x00; - pBytes[4] = 0x00; pBytes[5] = 0x00; pBytes[6] = 0x00; pBytes[7] = 0xc0; - - pOutput[2] = 0; - pOutput[3] = 0; - - // Pack 4 endpoints (each ranging between [0,255]) as 8-bits starting at bit 17 - int bit_pos = 17; - for (uint32_t i = 0; i < 4; i++) - astc_set_bits(pOutput, bit_pos, pBlock->m_endpoints[i], 8); - - // Pack 32 2-bit weights, which are stored from the top down into the block in opposite bit order. - for (uint32_t i = 0; i < 32; i++) - { - static const uint8_t s_reverse_bits[4] = { 0, 2, 1, 3 }; - const uint32_t ofs = 126 - (i * 2); - pBytes[ofs >> 3] |= (s_reverse_bits[pBlock->m_weights[i]] << (ofs & 7)); - } - } - - // CEM mode 8 (LDR RGB Direct), 8-bit endpoints, 2 bit weights - static void astc_pack_block_cem_8_weight_range2(uint32_t* pOutput, const astc_block_params* pBlock) - { - uint8_t* pBytes = reinterpret_cast(pOutput); - - // Write constant block mode, color component selector, number of partitions, color endpoint mode - // https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#_block_mode - pBytes[0] = 0x42; pBytes[1] = 0x00; pBytes[2] = 0x01; pBytes[3] = 0x00; - - pOutput[1] = 0; - pOutput[2] = 0; - pOutput[3] = 0; - - // Pack 6 endpoints (each ranging between [0,255]) as 8-bits starting at bit 17 - int bit_pos = 17; - for (uint32_t i = 0; i < 6; i++) - astc_set_bits(pOutput, bit_pos, pBlock->m_endpoints[i], 8); - - // Pack 16 2-bit weights, which are stored from the top down into the block in opposite bit order. - for (uint32_t i = 0; i < 16; i++) - { - static const uint8_t s_reverse_bits[4] = { 0, 2, 1, 3 }; - const uint32_t ofs = 126 - (i * 2); - pBytes[ofs >> 3] |= (s_reverse_bits[pBlock->m_weights[i]] << (ofs & 7)); - } - } -#endif - - // Optimal quantized [0,47] entry to use given [0,255] input - static uint8_t g_astc_single_color_encoding_0[256]; - - // Optimal quantized [0,47] low/high values given [0,255] input assuming a selector of 1 - static struct - { - uint8_t m_lo, m_hi; - } g_astc_single_color_encoding_1[256]; - - static void transcoder_init_astc() - { - for (uint32_t base_color = 0; base_color < 32; base_color++) - { - for (uint32_t inten_table = 0; inten_table < 8; inten_table++) - { - for (uint32_t range_index = 0; range_index < NUM_ETC1_TO_ASTC_SELECTOR_RANGES; range_index++) - { - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc[(inten_table * 32 + base_color) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + range_index * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - uint32_t best_mapping = 0; - uint32_t best_err = UINT32_MAX; - for (uint32_t mapping_index = 0; mapping_index < NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS; mapping_index++) - { - if (pTable_g[mapping_index].m_err < best_err) - { - best_err = pTable_g[mapping_index].m_err; - best_mapping = mapping_index; - } - } - - g_etc1_to_astc_best_grayscale_mapping[base_color][inten_table][range_index] = static_cast(best_mapping); - } - } - } - -#if BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY - for (uint32_t base_color = 0; base_color < 32; base_color++) - { - for (uint32_t inten_table = 0; inten_table < 8; inten_table++) - { - for (uint32_t range_index = 0; range_index < NUM_ETC1_TO_ASTC_SELECTOR_RANGES; range_index++) - { - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc_0_255[(inten_table * 32 + base_color) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + range_index * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - uint32_t best_mapping = 0; - uint32_t best_err = UINT32_MAX; - for (uint32_t mapping_index = 0; mapping_index < NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS; mapping_index++) - { - if (pTable_g[mapping_index].m_err < best_err) - { - best_err = pTable_g[mapping_index].m_err; - best_mapping = mapping_index; - } - } - - g_etc1_to_astc_best_grayscale_mapping_0_255[base_color][inten_table][range_index] = static_cast(best_mapping); - } - } - } -#endif - - for (uint32_t i = 0; i < NUM_ETC1_TO_ASTC_SELECTOR_RANGES; i++) - { - uint32_t l = g_etc1_to_astc_selector_ranges[i].m_low; - uint32_t h = g_etc1_to_astc_selector_ranges[i].m_high; - g_etc1_to_astc_selector_range_index[l][h] = i; - } - - // Endpoint dequantization, see: - // https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#astc-endpoint-unquantization - for (uint32_t trit = 0; trit < 3; trit++) - { - for (uint32_t bit = 0; bit < 16; bit++) - { - const uint32_t A = (bit & 1) ? 511 : 0; - const uint32_t B = (bit >> 1) | ((bit >> 1) << 6); - const uint32_t C = 22; - const uint32_t D = trit; - - uint32_t unq = D * C + B; - unq = unq ^ A; - unq = (A & 0x80) | (unq >> 2); - - g_ise_to_unquant[bit | (trit << 4)] = unq; - } - } - - // Compute table used for optimal single color encoding. - for (int i = 0; i < 256; i++) - { - int lowest_e = INT_MAX; - - for (int lo = 0; lo < 48; lo++) - { - for (int hi = 0; hi < 48; hi++) - { - const int lo_v = g_ise_to_unquant[lo]; - const int hi_v = g_ise_to_unquant[hi]; - - int l = lo_v | (lo_v << 8); - int h = hi_v | (hi_v << 8); - - int v = ((l * (64 - 21) + (h * 21) + 32) / 64) >> 8; - - int e = abs(v - i); - - if (e < lowest_e) - { - g_astc_single_color_encoding_1[i].m_hi = static_cast(hi); - g_astc_single_color_encoding_1[i].m_lo = static_cast(lo); - - lowest_e = e; - } - - } // hi - } // lo - } - - for (int i = 0; i < 256; i++) - { - int lowest_e = INT_MAX; - - for (int lo = 0; lo < 48; lo++) - { - const int lo_v = g_ise_to_unquant[lo]; - - int e = abs(lo_v - i); - - if (e < lowest_e) - { - g_astc_single_color_encoding_0[i] = static_cast(lo); - - lowest_e = e; - } - } // lo - } - } - - // Converts opaque or color+alpha ETC1S block to ASTC 4x4. - // This function tries to use the best ASTC mode given the block's actual contents. - static void convert_etc1s_to_astc_4x4(void* pDst_block, const endpoint* pEndpoints, const selector* pSelector, - bool transcode_alpha, const endpoint *pEndpoint_codebook, const selector *pSelector_codebook) - { - astc_block_params blk; - - blk.m_endpoints[8] = 0; - blk.m_endpoints[9] = 0; - - int constant_alpha_val = 255; - int num_unique_alpha_selectors = 1; - - if (transcode_alpha) - { - const selector& alpha_selectors = pSelector_codebook[((uint16_t*)pDst_block)[1]]; - - num_unique_alpha_selectors = alpha_selectors.m_num_unique_selectors; - - if (num_unique_alpha_selectors == 1) - { - const endpoint& alpha_endpoint = pEndpoint_codebook[((uint16_t*)pDst_block)[0]]; - - const color32& alpha_base_color = alpha_endpoint.m_color5; - const uint32_t alpha_inten_table = alpha_endpoint.m_inten5; - - int alpha_block_colors[4]; - decoder_etc_block::get_block_colors5_g(alpha_block_colors, alpha_base_color, alpha_inten_table); - - constant_alpha_val = alpha_block_colors[alpha_selectors.m_lo_selector]; - } - } - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - // Handle solid color or BTC blocks, which can always be encoded from ETC1S to ASTC losslessly. - if ((pSelector->m_num_unique_selectors == 1) && (num_unique_alpha_selectors == 1)) - { - // Both color and alpha are constant, write a solid color block and exit. - // See https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#astc-void-extent-blocks - uint32_t r, g, b; - decoder_etc_block::get_block_color5(base_color, inten_table, low_selector, r, g, b); - - uint32_t* pOutput = static_cast(pDst_block); - uint8_t* pBytes = reinterpret_cast(pDst_block); - - pBytes[0] = 0xfc; pBytes[1] = 0xfd; pBytes[2] = 0xff; pBytes[3] = 0xff; - - pOutput[1] = 0xffffffff; - pOutput[2] = 0; - pOutput[3] = 0; - - int bit_pos = 64; - astc_set_bits(pOutput, bit_pos, r | (r << 8), 16); - astc_set_bits(pOutput, bit_pos, g | (g << 8), 16); - astc_set_bits(pOutput, bit_pos, b | (b << 8), 16); - astc_set_bits(pOutput, bit_pos, constant_alpha_val | (constant_alpha_val << 8), 16); - - return; - } - else if ((pSelector->m_num_unique_selectors <= 2) && (num_unique_alpha_selectors <= 2)) - { - // Both color and alpha use <= 2 unique selectors each. - // Use block truncation coding, which is lossless with ASTC (8-bit endpoints, 1-bit weights). - color32 block_colors[4]; - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - blk.m_endpoints[0] = block_colors[low_selector].r; - blk.m_endpoints[2] = block_colors[low_selector].g; - blk.m_endpoints[4] = block_colors[low_selector].b; - - blk.m_endpoints[1] = block_colors[high_selector].r; - blk.m_endpoints[3] = block_colors[high_selector].g; - blk.m_endpoints[5] = block_colors[high_selector].b; - - int s0 = blk.m_endpoints[0] + blk.m_endpoints[2] + blk.m_endpoints[4]; - int s1 = blk.m_endpoints[1] + blk.m_endpoints[3] + blk.m_endpoints[5]; - bool invert = false; - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - if (transcode_alpha) - { - const endpoint& alpha_endpoint = pEndpoint_codebook[((uint16_t*)pDst_block)[0]]; - const selector& alpha_selectors = pSelector_codebook[((uint16_t*)pDst_block)[1]]; - - const color32& alpha_base_color = alpha_endpoint.m_color5; - const uint32_t alpha_inten_table = alpha_endpoint.m_inten5; - - const uint32_t alpha_low_selector = alpha_selectors.m_lo_selector; - const uint32_t alpha_high_selector = alpha_selectors.m_hi_selector; - - int alpha_block_colors[4]; - decoder_etc_block::get_block_colors5_g(alpha_block_colors, alpha_base_color, alpha_inten_table); - - blk.m_endpoints[6] = static_cast(alpha_block_colors[alpha_low_selector]); - blk.m_endpoints[7] = static_cast(alpha_block_colors[alpha_high_selector]); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = alpha_selectors.get_selector(x, y); - s = (s == alpha_high_selector) ? 1 : 0; - - blk.m_weights[(x + y * 4) * 2 + 1] = static_cast(s); - } // x - } // y - } - else - { - blk.m_endpoints[6] = 255; - blk.m_endpoints[7] = 255; - - for (uint32_t i = 0; i < 16; i++) - blk.m_weights[i * 2 + 1] = 0; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - - s = (s == high_selector) ? 1 : 0; - - if (invert) - s = 1 - s; - - blk.m_weights[(x + y * 4) * 2] = static_cast(s); - } // x - } // y - - astc_pack_block_cem_12_weight_range0(reinterpret_cast(pDst_block), &blk); - - return; - } - - // Either alpha and/or color use > 2 unique selectors each, so we must do something more complex. - -#if BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY - // The optional higher quality modes use 8-bits endpoints vs. [0,47] endpoints. - - // If the block's base color is grayscale, all pixels are grayscale, so encode the block as Luminance+Alpha. - if ((base_color.r == base_color.g) && (base_color.r == base_color.b)) - { - if (transcode_alpha) - { - const endpoint& alpha_endpoint = pEndpoint_codebook[((uint16_t*)pDst_block)[0]]; - const selector& alpha_selectors = pSelector_codebook[((uint16_t*)pDst_block)[1]]; - - const color32& alpha_base_color = alpha_endpoint.m_color5; - const uint32_t alpha_inten_table = alpha_endpoint.m_inten5; - - const uint32_t alpha_low_selector = alpha_selectors.m_lo_selector; - const uint32_t alpha_high_selector = alpha_selectors.m_hi_selector; - - if (num_unique_alpha_selectors <= 2) - { - // Simple alpha block with only 1 or 2 unique values, so use BTC. This is lossless. - int alpha_block_colors[4]; - decoder_etc_block::get_block_colors5_g(alpha_block_colors, alpha_base_color, alpha_inten_table); - - blk.m_endpoints[2] = static_cast(alpha_block_colors[alpha_low_selector]); - blk.m_endpoints[3] = static_cast(alpha_block_colors[alpha_high_selector]); - - for (uint32_t i = 0; i < 16; i++) - { - uint32_t s = alpha_selectors.get_selector(i & 3, i >> 2); - blk.m_weights[i * 2 + 1] = (s == alpha_high_selector) ? 3 : 0; - } - } - else - { - // Convert ETC1S alpha - const uint32_t alpha_selector_range_table = g_etc1_to_astc_selector_range_index[alpha_low_selector][alpha_high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc_0_255[(alpha_inten_table * 32 + alpha_base_color.g) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + alpha_selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - const uint32_t best_mapping = g_etc1_to_astc_best_grayscale_mapping_0_255[alpha_base_color.g][alpha_inten_table][alpha_selector_range_table]; - - blk.m_endpoints[2] = pTable_g[best_mapping].m_lo; - blk.m_endpoints[3] = pTable_g[best_mapping].m_hi; - - const uint8_t* pSelectors_xlat = &g_etc1_to_astc_selector_mappings[best_mapping][0]; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = alpha_selectors.get_selector(x, y); - uint32_t as = pSelectors_xlat[s]; - - blk.m_weights[(x + y * 4) * 2 + 1] = static_cast(as); - } // x - } // y - } - } - else - { - // No alpha slice - set output alpha to all 255's - blk.m_endpoints[2] = 255; - blk.m_endpoints[3] = 255; - - for (uint32_t i = 0; i < 16; i++) - blk.m_weights[i * 2 + 1] = 0; - } - - if (pSelector->m_num_unique_selectors <= 2) - { - // Simple color block with only 1 or 2 unique values, so use BTC. This is lossless. - int block_colors[4]; - decoder_etc_block::get_block_colors5_g(block_colors, base_color, inten_table); - - blk.m_endpoints[0] = static_cast(block_colors[low_selector]); - blk.m_endpoints[1] = static_cast(block_colors[high_selector]); - - for (uint32_t i = 0; i < 16; i++) - { - uint32_t s = pSelector->get_selector(i & 3, i >> 2); - blk.m_weights[i * 2] = (s == high_selector) ? 3 : 0; - } - } - else - { - // Convert ETC1S alpha - const uint32_t selector_range_table = g_etc1_to_astc_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc_0_255[(inten_table * 32 + base_color.g) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - const uint32_t best_mapping = g_etc1_to_astc_best_grayscale_mapping_0_255[base_color.g][inten_table][selector_range_table]; - - blk.m_endpoints[0] = pTable_g[best_mapping].m_lo; - blk.m_endpoints[1] = pTable_g[best_mapping].m_hi; - - const uint8_t* pSelectors_xlat = &g_etc1_to_astc_selector_mappings[best_mapping][0]; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - uint32_t as = pSelectors_xlat[s]; - - blk.m_weights[(x + y * 4) * 2] = static_cast(as); - } // x - } // y - } - - astc_pack_block_cem_4_weight_range2(reinterpret_cast(pDst_block), &blk); - return; - } - - // The block isn't grayscale and it uses > 2 unique selectors for opaque and/or alpha. - // Check for fully opaque blocks, if so use 8-bit endpoints for slightly higher opaque quality (higher than BC1, but lower than BC7 mode 6 opaque). - if ((num_unique_alpha_selectors == 1) && (constant_alpha_val == 255)) - { - // Convert ETC1S color - const uint32_t selector_range_table = g_etc1_to_astc_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_astc_solution* pTable_r = &g_etc1_to_astc_0_255[(inten_table * 32 + base_color.r) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc_0_255[(inten_table * 32 + base_color.g) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - const etc1_to_astc_solution* pTable_b = &g_etc1_to_astc_0_255[(inten_table * 32 + base_color.b) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - uint32_t best_err = UINT_MAX; - uint32_t best_mapping = 0; - - assert(NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS == 10); -#define DO_ITER(m) { uint32_t total_err = pTable_r[m].m_err + pTable_g[m].m_err + pTable_b[m].m_err; if (total_err < best_err) { best_err = total_err; best_mapping = m; } } - DO_ITER(0); DO_ITER(1); DO_ITER(2); DO_ITER(3); DO_ITER(4); - DO_ITER(5); DO_ITER(6); DO_ITER(7); DO_ITER(8); DO_ITER(9); -#undef DO_ITER - - blk.m_endpoints[0] = pTable_r[best_mapping].m_lo; - blk.m_endpoints[1] = pTable_r[best_mapping].m_hi; - - blk.m_endpoints[2] = pTable_g[best_mapping].m_lo; - blk.m_endpoints[3] = pTable_g[best_mapping].m_hi; - - blk.m_endpoints[4] = pTable_b[best_mapping].m_lo; - blk.m_endpoints[5] = pTable_b[best_mapping].m_hi; - - int s0 = blk.m_endpoints[0] + blk.m_endpoints[2] + blk.m_endpoints[4]; - int s1 = blk.m_endpoints[1] + blk.m_endpoints[3] + blk.m_endpoints[5]; - bool invert = false; - - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - const uint8_t* pSelectors_xlat = &g_etc1_to_astc_selector_mappings[best_mapping][0]; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - uint32_t as = pSelectors_xlat[s]; - if (invert) - as = 3 - as; - - blk.m_weights[x + y * 4] = static_cast(as); - } // x - } // y - - // Now pack to ASTC - astc_pack_block_cem_8_weight_range2(reinterpret_cast(pDst_block), &blk); - return; - } -#endif //#if BASISD_SUPPORT_ASTC_HIGHER_OPAQUE_QUALITY - - // Nothing else worked, so fall back to CEM Mode 12 (LDR RGBA Direct), [0,47] endpoints, weight range 2 (2-bit weights), dual planes. - // This mode can handle everything, but at slightly less quality than BC1. - if (transcode_alpha) - { - const endpoint& alpha_endpoint = pEndpoint_codebook[((uint16_t*)pDst_block)[0]]; - const selector& alpha_selectors = pSelector_codebook[((uint16_t*)pDst_block)[1]]; - - const color32& alpha_base_color = alpha_endpoint.m_color5; - const uint32_t alpha_inten_table = alpha_endpoint.m_inten5; - - const uint32_t alpha_low_selector = alpha_selectors.m_lo_selector; - const uint32_t alpha_high_selector = alpha_selectors.m_hi_selector; - - if (alpha_low_selector == alpha_high_selector) - { - // Solid alpha block - use precomputed tables. - int alpha_block_colors[4]; - decoder_etc_block::get_block_colors5_g(alpha_block_colors, alpha_base_color, alpha_inten_table); - - const uint32_t g = alpha_block_colors[alpha_low_selector]; - - blk.m_endpoints[6] = g_astc_single_color_encoding_1[g].m_lo; - blk.m_endpoints[7] = g_astc_single_color_encoding_1[g].m_hi; - - for (uint32_t i = 0; i < 16; i++) - blk.m_weights[i * 2 + 1] = 1; - } - else if ((alpha_inten_table >= 7) && (alpha_selectors.m_num_unique_selectors == 2) && (alpha_low_selector == 0) && (alpha_high_selector == 3)) - { - // Handle outlier case where only the two outer colors are used with inten table 7. - color32 alpha_block_colors[4]; - - decoder_etc_block::get_block_colors5(alpha_block_colors, alpha_base_color, alpha_inten_table); - - const uint32_t g0 = alpha_block_colors[0].g; - const uint32_t g1 = alpha_block_colors[3].g; - - blk.m_endpoints[6] = g_astc_single_color_encoding_0[g0]; - blk.m_endpoints[7] = g_astc_single_color_encoding_0[g1]; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = alpha_selectors.get_selector(x, y); - uint32_t as = (s == alpha_high_selector) ? 3 : 0; - - blk.m_weights[(x + y * 4) * 2 + 1] = static_cast(as); - } // x - } // y - } - else - { - // Convert ETC1S alpha - const uint32_t alpha_selector_range_table = g_etc1_to_astc_selector_range_index[alpha_low_selector][alpha_high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc[(alpha_inten_table * 32 + alpha_base_color.g) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + alpha_selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - const uint32_t best_mapping = g_etc1_to_astc_best_grayscale_mapping[alpha_base_color.g][alpha_inten_table][alpha_selector_range_table]; - - blk.m_endpoints[6] = pTable_g[best_mapping].m_lo; - blk.m_endpoints[7] = pTable_g[best_mapping].m_hi; - - const uint8_t* pSelectors_xlat = &g_etc1_to_astc_selector_mappings[best_mapping][0]; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = alpha_selectors.get_selector(x, y); - uint32_t as = pSelectors_xlat[s]; - - blk.m_weights[(x + y * 4) * 2 + 1] = static_cast(as); - } // x - } // y - } - } - else - { - // No alpha slice - set output alpha to all 255's - // 1 is 255 when dequantized - blk.m_endpoints[6] = 1; - blk.m_endpoints[7] = 1; - - for (uint32_t i = 0; i < 16; i++) - blk.m_weights[i * 2 + 1] = 0; - } - - if (low_selector == high_selector) - { - // Solid color block - use precomputed tables of optimal endpoints assuming selector weights are all 1. - color32 block_colors[4]; - - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - const uint32_t r = block_colors[low_selector].r; - const uint32_t g = block_colors[low_selector].g; - const uint32_t b = block_colors[low_selector].b; - - blk.m_endpoints[0] = g_astc_single_color_encoding_1[r].m_lo; - blk.m_endpoints[1] = g_astc_single_color_encoding_1[r].m_hi; - - blk.m_endpoints[2] = g_astc_single_color_encoding_1[g].m_lo; - blk.m_endpoints[3] = g_astc_single_color_encoding_1[g].m_hi; - - blk.m_endpoints[4] = g_astc_single_color_encoding_1[b].m_lo; - blk.m_endpoints[5] = g_astc_single_color_encoding_1[b].m_hi; - - int s0 = g_ise_to_unquant[blk.m_endpoints[0]] + g_ise_to_unquant[blk.m_endpoints[2]] + g_ise_to_unquant[blk.m_endpoints[4]]; - int s1 = g_ise_to_unquant[blk.m_endpoints[1]] + g_ise_to_unquant[blk.m_endpoints[3]] + g_ise_to_unquant[blk.m_endpoints[5]]; - bool invert = false; - - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - for (uint32_t i = 0; i < 16; i++) - blk.m_weights[i * 2] = invert ? 2 : 1; - } - else if ((inten_table >= 7) && (pSelector->m_num_unique_selectors == 2) && (pSelector->m_lo_selector == 0) && (pSelector->m_hi_selector == 3)) - { - // Handle outlier case where only the two outer colors are used with inten table 7. - color32 block_colors[4]; - - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - const uint32_t r0 = block_colors[0].r; - const uint32_t g0 = block_colors[0].g; - const uint32_t b0 = block_colors[0].b; - - const uint32_t r1 = block_colors[3].r; - const uint32_t g1 = block_colors[3].g; - const uint32_t b1 = block_colors[3].b; - - blk.m_endpoints[0] = g_astc_single_color_encoding_0[r0]; - blk.m_endpoints[1] = g_astc_single_color_encoding_0[r1]; - - blk.m_endpoints[2] = g_astc_single_color_encoding_0[g0]; - blk.m_endpoints[3] = g_astc_single_color_encoding_0[g1]; - - blk.m_endpoints[4] = g_astc_single_color_encoding_0[b0]; - blk.m_endpoints[5] = g_astc_single_color_encoding_0[b1]; - - int s0 = g_ise_to_unquant[blk.m_endpoints[0]] + g_ise_to_unquant[blk.m_endpoints[2]] + g_ise_to_unquant[blk.m_endpoints[4]]; - int s1 = g_ise_to_unquant[blk.m_endpoints[1]] + g_ise_to_unquant[blk.m_endpoints[3]] + g_ise_to_unquant[blk.m_endpoints[5]]; - bool invert = false; - - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - uint32_t as = (s == low_selector) ? 0 : 3; - - if (invert) - as = 3 - as; - - blk.m_weights[(x + y * 4) * 2] = static_cast(as); - } // x - } // y - } - else - { - // Convert ETC1S color - const uint32_t selector_range_table = g_etc1_to_astc_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1_to_astc_solution* pTable_r = &g_etc1_to_astc[(inten_table * 32 + base_color.r) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - const etc1_to_astc_solution* pTable_g = &g_etc1_to_astc[(inten_table * 32 + base_color.g) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - const etc1_to_astc_solution* pTable_b = &g_etc1_to_astc[(inten_table * 32 + base_color.b) * (NUM_ETC1_TO_ASTC_SELECTOR_RANGES * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS]; - - uint32_t best_err = UINT_MAX; - uint32_t best_mapping = 0; - - assert(NUM_ETC1_TO_ASTC_SELECTOR_MAPPINGS == 10); -#define DO_ITER(m) { uint32_t total_err = pTable_r[m].m_err + pTable_g[m].m_err + pTable_b[m].m_err; if (total_err < best_err) { best_err = total_err; best_mapping = m; } } - DO_ITER(0); DO_ITER(1); DO_ITER(2); DO_ITER(3); DO_ITER(4); - DO_ITER(5); DO_ITER(6); DO_ITER(7); DO_ITER(8); DO_ITER(9); -#undef DO_ITER - - blk.m_endpoints[0] = pTable_r[best_mapping].m_lo; - blk.m_endpoints[1] = pTable_r[best_mapping].m_hi; - - blk.m_endpoints[2] = pTable_g[best_mapping].m_lo; - blk.m_endpoints[3] = pTable_g[best_mapping].m_hi; - - blk.m_endpoints[4] = pTable_b[best_mapping].m_lo; - blk.m_endpoints[5] = pTable_b[best_mapping].m_hi; - - int s0 = g_ise_to_unquant[blk.m_endpoints[0]] + g_ise_to_unquant[blk.m_endpoints[2]] + g_ise_to_unquant[blk.m_endpoints[4]]; - int s1 = g_ise_to_unquant[blk.m_endpoints[1]] + g_ise_to_unquant[blk.m_endpoints[3]] + g_ise_to_unquant[blk.m_endpoints[5]]; - bool invert = false; - - if (s1 < s0) - { - std::swap(blk.m_endpoints[0], blk.m_endpoints[1]); - std::swap(blk.m_endpoints[2], blk.m_endpoints[3]); - std::swap(blk.m_endpoints[4], blk.m_endpoints[5]); - invert = true; - } - - const uint8_t* pSelectors_xlat = &g_etc1_to_astc_selector_mappings[best_mapping][0]; - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = pSelector->get_selector(x, y); - uint32_t as = pSelectors_xlat[s]; - if (invert) - as = 3 - as; - - blk.m_weights[(x + y * 4) * 2] = static_cast(as); - } // x - } // y - } - - // Now pack to ASTC - astc_pack_block_cem_12_weight_range2(reinterpret_cast(pDst_block), &blk); - } -#endif - -#if BASISD_SUPPORT_ATC - // ATC and PVRTC2 both use these tables. - struct etc1s_to_atc_solution - { - uint8_t m_lo; - uint8_t m_hi; - uint16_t m_err; - }; - - static dxt_selector_range g_etc1s_to_atc_selector_ranges[] = - { - { 0, 3 }, - { 1, 3 }, - { 0, 2 }, - { 1, 2 }, - { 2, 3 }, - { 0, 1 }, - }; - - const uint32_t NUM_ETC1S_TO_ATC_SELECTOR_RANGES = sizeof(g_etc1s_to_atc_selector_ranges) / sizeof(g_etc1s_to_atc_selector_ranges[0]); - - static uint32_t g_etc1s_to_atc_selector_range_index[4][4]; - - const uint32_t NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS = 10; - static const uint8_t g_etc1s_to_atc_selector_mappings[NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS][4] = - { - { 0, 0, 1, 1 }, - { 0, 0, 1, 2 }, - { 0, 0, 1, 3 }, - { 0, 0, 2, 3 }, - { 0, 1, 1, 1 }, - { 0, 1, 2, 2 }, - { 0, 1, 2, 3 }, //6 - identity - { 0, 2, 3, 3 }, - { 1, 2, 2, 2 }, - { 1, 2, 3, 3 }, - }; - const uint32_t ATC_IDENTITY_SELECTOR_MAPPING_INDEX = 6; - -#if BASISD_SUPPORT_PVRTC2 - static const etc1s_to_atc_solution g_etc1s_to_pvrtc2_45[32 * 8 * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS * NUM_ETC1S_TO_ATC_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_pvrtc2_45.inc" - }; - -#if 0 - static const etc1s_to_atc_solution g_etc1s_to_pvrtc2_alpha_33[32 * 8 * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS * NUM_ETC1S_TO_ATC_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_pvrtc2_alpha_33.inc" - }; -#endif - -#endif - - static const etc1s_to_atc_solution g_etc1s_to_atc_55[32 * 8 * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS * NUM_ETC1S_TO_ATC_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_atc_55.inc" - }; - - static const etc1s_to_atc_solution g_etc1s_to_atc_56[32 * 8 * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS * NUM_ETC1S_TO_ATC_SELECTOR_RANGES] = { -#include "basisu_transcoder_tables_atc_56.inc" - }; - - struct atc_match_entry - { - uint8_t m_lo; - uint8_t m_hi; - }; - static atc_match_entry g_pvrtc2_match45_equals_1[256], g_atc_match55_equals_1[256], g_atc_match56_equals_1[256]; // selector 1 - static atc_match_entry g_pvrtc2_match4[256], g_atc_match5[256], g_atc_match6[256]; - - static void prepare_atc_single_color_table(atc_match_entry* pTable, int size0, int size1, int sel) - { - for (int i = 0; i < 256; i++) - { - int lowest_e = 256; - for (int lo = 0; lo < size0; lo++) - { - int lo_e = lo; - if (size0 == 16) - { - lo_e = (lo_e << 1) | (lo_e >> 3); - lo_e = (lo_e << 3) | (lo_e >> 2); - } - else if (size0 == 32) - lo_e = (lo_e << 3) | (lo_e >> 2); - else - lo_e = (lo_e << 2) | (lo_e >> 4); - - for (int hi = 0; hi < size1; hi++) - { - int hi_e = hi; - if (size1 == 16) - { - // This is only for PVRTC2 - expand to 5 then 8 - hi_e = (hi_e << 1) | (hi_e >> 3); - hi_e = (hi_e << 3) | (hi_e >> 2); - } - else if (size1 == 32) - hi_e = (hi_e << 3) | (hi_e >> 2); - else - hi_e = (hi_e << 2) | (hi_e >> 4); - - int e; - - if (sel == 1) - { - // Selector 1 - e = abs(((lo_e * 5 + hi_e * 3) / 8) - i); - } - else - { - assert(sel == 3); - - // Selector 3 - e = abs(hi_e - i); - } - - if (e < lowest_e) - { - pTable[i].m_lo = static_cast(lo); - pTable[i].m_hi = static_cast(hi); - - lowest_e = e; - } - - } // hi - } // lo - } // i - } - - static void transcoder_init_atc() - { - prepare_atc_single_color_table(g_pvrtc2_match45_equals_1, 16, 32, 1); - prepare_atc_single_color_table(g_atc_match55_equals_1, 32, 32, 1); - prepare_atc_single_color_table(g_atc_match56_equals_1, 32, 64, 1); - - prepare_atc_single_color_table(g_pvrtc2_match4, 1, 16, 3); - prepare_atc_single_color_table(g_atc_match5, 1, 32, 3); - prepare_atc_single_color_table(g_atc_match6, 1, 64, 3); - - for (uint32_t i = 0; i < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; i++) - { - uint32_t l = g_etc1s_to_atc_selector_ranges[i].m_low; - uint32_t h = g_etc1s_to_atc_selector_ranges[i].m_high; - g_etc1s_to_atc_selector_range_index[l][h] = i; - } - } - - struct atc_block - { - uint8_t m_lo[2]; - uint8_t m_hi[2]; - uint8_t m_sels[4]; - - void set_low_color(uint32_t r, uint32_t g, uint32_t b) - { - assert((r < 32) && (g < 32) && (b < 32)); - uint32_t x = (r << 10) | (g << 5) | b; - m_lo[0] = x & 0xFF; - m_lo[1] = (x >> 8) & 0xFF; - } - - void set_high_color(uint32_t r, uint32_t g, uint32_t b) - { - assert((r < 32) && (g < 64) && (b < 32)); - uint32_t x = (r << 11) | (g << 5) | b; - m_hi[0] = x & 0xFF; - m_hi[1] = (x >> 8) & 0xFF; - } - }; - - static void convert_etc1s_to_atc(void* pDst, const endpoint* pEndpoints, const selector* pSelector) - { - atc_block* pBlock = static_cast(pDst); - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (low_selector == high_selector) - { - uint32_t r, g, b; - decoder_etc_block::get_block_color5(base_color, inten_table, low_selector, r, g, b); - - pBlock->set_low_color(g_atc_match55_equals_1[r].m_lo, g_atc_match56_equals_1[g].m_lo, g_atc_match55_equals_1[b].m_lo); - pBlock->set_high_color(g_atc_match55_equals_1[r].m_hi, g_atc_match56_equals_1[g].m_hi, g_atc_match55_equals_1[b].m_hi); - - pBlock->m_sels[0] = 0x55; - pBlock->m_sels[1] = 0x55; - pBlock->m_sels[2] = 0x55; - pBlock->m_sels[3] = 0x55; - - return; - } - else if ((inten_table >= 7) && (pSelector->m_num_unique_selectors == 2) && (pSelector->m_lo_selector == 0) && (pSelector->m_hi_selector == 3)) - { - color32 block_colors[4]; - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - const uint32_t r0 = block_colors[0].r; - const uint32_t g0 = block_colors[0].g; - const uint32_t b0 = block_colors[0].b; - - const uint32_t r1 = block_colors[3].r; - const uint32_t g1 = block_colors[3].g; - const uint32_t b1 = block_colors[3].b; - - pBlock->set_low_color(g_atc_match5[r0].m_hi, g_atc_match5[g0].m_hi, g_atc_match5[b0].m_hi); - pBlock->set_high_color(g_atc_match5[r1].m_hi, g_atc_match6[g1].m_hi, g_atc_match5[b1].m_hi); - - pBlock->m_sels[0] = pSelector->m_selectors[0]; - pBlock->m_sels[1] = pSelector->m_selectors[1]; - pBlock->m_sels[2] = pSelector->m_selectors[2]; - pBlock->m_sels[3] = pSelector->m_selectors[3]; - - return; - } - - const uint32_t selector_range_table = g_etc1s_to_atc_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1s_to_atc_solution* pTable_r = &g_etc1s_to_atc_55[(inten_table * 32 + base_color.r) * (NUM_ETC1S_TO_ATC_SELECTOR_RANGES * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS]; - const etc1s_to_atc_solution* pTable_g = &g_etc1s_to_atc_56[(inten_table * 32 + base_color.g) * (NUM_ETC1S_TO_ATC_SELECTOR_RANGES * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS]; - const etc1s_to_atc_solution* pTable_b = &g_etc1s_to_atc_55[(inten_table * 32 + base_color.b) * (NUM_ETC1S_TO_ATC_SELECTOR_RANGES * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS]; - - uint32_t best_err = UINT_MAX; - uint32_t best_mapping = 0; - - assert(NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS == 10); -#define DO_ITER(m) { uint32_t total_err = pTable_r[m].m_err + pTable_g[m].m_err + pTable_b[m].m_err; if (total_err < best_err) { best_err = total_err; best_mapping = m; } } - DO_ITER(0); DO_ITER(1); DO_ITER(2); DO_ITER(3); DO_ITER(4); - DO_ITER(5); DO_ITER(6); DO_ITER(7); DO_ITER(8); DO_ITER(9); -#undef DO_ITER - - pBlock->set_low_color(pTable_r[best_mapping].m_lo, pTable_g[best_mapping].m_lo, pTable_b[best_mapping].m_lo); - pBlock->set_high_color(pTable_r[best_mapping].m_hi, pTable_g[best_mapping].m_hi, pTable_b[best_mapping].m_hi); - - if (ATC_IDENTITY_SELECTOR_MAPPING_INDEX == best_mapping) - { - pBlock->m_sels[0] = pSelector->m_selectors[0]; - pBlock->m_sels[1] = pSelector->m_selectors[1]; - pBlock->m_sels[2] = pSelector->m_selectors[2]; - pBlock->m_sels[3] = pSelector->m_selectors[3]; - } - else - { - const uint8_t* pSelectors_xlat = &g_etc1s_to_atc_selector_mappings[best_mapping][0]; - - const uint32_t sel_bits0 = pSelector->m_selectors[0]; - const uint32_t sel_bits1 = pSelector->m_selectors[1]; - const uint32_t sel_bits2 = pSelector->m_selectors[2]; - const uint32_t sel_bits3 = pSelector->m_selectors[3]; - - uint32_t atc_sels0 = 0, atc_sels1 = 0, atc_sels2 = 0, atc_sels3 = 0; - -#define DO_X(x) { \ - const uint32_t x_shift = (x) * 2; \ - atc_sels0 |= (pSelectors_xlat[(sel_bits0 >> x_shift) & 3] << x_shift); \ - atc_sels1 |= (pSelectors_xlat[(sel_bits1 >> x_shift) & 3] << x_shift); \ - atc_sels2 |= (pSelectors_xlat[(sel_bits2 >> x_shift) & 3] << x_shift); \ - atc_sels3 |= (pSelectors_xlat[(sel_bits3 >> x_shift) & 3] << x_shift); } - - DO_X(0); - DO_X(1); - DO_X(2); - DO_X(3); -#undef DO_X - - pBlock->m_sels[0] = (uint8_t)atc_sels0; - pBlock->m_sels[1] = (uint8_t)atc_sels1; - pBlock->m_sels[2] = (uint8_t)atc_sels2; - pBlock->m_sels[3] = (uint8_t)atc_sels3; - } - } - -#if BASISD_WRITE_NEW_ATC_TABLES - static void create_etc1s_to_atc_conversion_tables() - { - // ATC 55 - FILE* pFile = nullptr; - fopen_s(&pFile, "basisu_transcoder_tables_atc_55.inc", "w"); - - uint32_t n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1s_to_atc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1s_to_atc_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 31; hi++) - { - for (uint32_t lo = 0; lo <= 31; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 3) | (lo >> 2); - colors[3] = (hi << 3) | (hi >> 2); - - colors[1] = (colors[0] * 5 + colors[3] * 3) / 8; - colors[2] = (colors[3] * 5 + colors[0] * 3) / 8; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1s_to_atc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - //assert(best_err <= 0xFFFF); - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); - pFile = nullptr; - - // ATC 56 - fopen_s(&pFile, "basisu_transcoder_tables_atc_56.inc", "w"); - - n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1s_to_atc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1s_to_atc_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 63; hi++) - { - for (uint32_t lo = 0; lo <= 31; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 3) | (lo >> 2); - colors[3] = (hi << 2) | (hi >> 4); - - colors[1] = (colors[0] * 5 + colors[3] * 3) / 8; - colors[2] = (colors[3] * 5 + colors[0] * 3) / 8; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1s_to_atc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - //assert(best_err <= 0xFFFF); - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); - - // PVRTC2 45 - fopen_s(&pFile, "basisu_transcoder_tables_pvrtc2_45.inc", "w"); - - n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1s_to_atc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1s_to_atc_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 31; hi++) - { - for (uint32_t lo = 0; lo <= 15; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 1) | (lo >> 3); - colors[0] = (colors[0] << 3) | (colors[0] >> 2); - - colors[3] = (hi << 3) | (hi >> 2); - - colors[1] = (colors[0] * 5 + colors[3] * 3) / 8; - colors[2] = (colors[3] * 5 + colors[0] * 3) / 8; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1s_to_atc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - //assert(best_err <= 0xFFFF); - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); - -#if 0 - // PVRTC2 34 - fopen_s(&pFile, "basisu_transcoder_tables_pvrtc2_34.inc", "w"); - - n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1s_to_atc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1s_to_atc_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 15; hi++) - { - for (uint32_t lo = 0; lo <= 7; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 2) | (lo >> 1); - colors[0] = (colors[0] << 3) | (colors[0] >> 2); - - colors[3] = (hi << 1) | (hi >> 3); - colors[3] = (colors[3] << 3) | (colors[3] >> 2); - - colors[1] = (colors[0] * 5 + colors[3] * 3) / 8; - colors[2] = (colors[3] * 5 + colors[0] * 3) / 8; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1s_to_atc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - //assert(best_err <= 0xFFFF); - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); -#endif -#if 0 - // PVRTC2 44 - fopen_s(&pFile, "basisu_transcoder_tables_pvrtc2_44.inc", "w"); - - n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1s_to_atc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1s_to_atc_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 15; hi++) - { - for (uint32_t lo = 0; lo <= 15; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 1) | (lo >> 3); - colors[0] = (colors[0] << 3) | (colors[0] >> 2); - - colors[3] = (hi << 1) | (hi >> 3); - colors[3] = (colors[3] << 3) | (colors[3] >> 2); - - colors[1] = (colors[0] * 5 + colors[3] * 3) / 8; - colors[2] = (colors[3] * 5 + colors[0] * 3) / 8; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1s_to_atc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - //assert(best_err <= 0xFFFF); - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); -#endif - - // PVRTC2 alpha 33 - fopen_s(&pFile, "basisu_transcoder_tables_pvrtc2_alpha_33.inc", "w"); - - n = 0; - - for (int inten = 0; inten < 8; inten++) - { - for (uint32_t g = 0; g < 32; g++) - { - color32 block_colors[4]; - decoder_etc_block::get_diff_subblock_colors(block_colors, decoder_etc_block::pack_color5(color32(g, g, g, 255), false), inten); - - for (uint32_t sr = 0; sr < NUM_ETC1S_TO_ATC_SELECTOR_RANGES; sr++) - { - const uint32_t low_selector = g_etc1s_to_atc_selector_ranges[sr].m_low; - const uint32_t high_selector = g_etc1s_to_atc_selector_ranges[sr].m_high; - - for (uint32_t m = 0; m < NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS; m++) - { - uint32_t best_lo = 0; - uint32_t best_hi = 0; - uint64_t best_err = UINT64_MAX; - - for (uint32_t hi = 0; hi <= 7; hi++) - { - for (uint32_t lo = 0; lo <= 7; lo++) - { - uint32_t colors[4]; - - colors[0] = (lo << 1); - colors[0] = (colors[0] << 4) | colors[0]; - - colors[3] = (hi << 1) | 1; - colors[3] = (colors[3] << 4) | colors[3]; - - colors[1] = (colors[0] * 5 + colors[3] * 3) / 8; - colors[2] = (colors[3] * 5 + colors[0] * 3) / 8; - - uint64_t total_err = 0; - - for (uint32_t s = low_selector; s <= high_selector; s++) - { - int err = block_colors[s].g - colors[g_etc1s_to_atc_selector_mappings[m][s]]; - - int err_scale = 1; - // Special case when the intensity table is 7, low_selector is 0, and high_selector is 3. In this extreme case, it's likely the encoder is trying to strongly favor - // the low/high selectors which are clamping to either 0 or 255. - if (((inten == 7) && (low_selector == 0) && (high_selector == 3)) && ((s == 0) || (s == 3))) - err_scale = 5; - - total_err += (err * err) * err_scale; - } - - if (total_err < best_err) - { - best_err = total_err; - best_lo = lo; - best_hi = hi; - } - } - } - - //assert(best_err <= 0xFFFF); - best_err = basisu::minimum(best_err, 0xFFFF); - - fprintf(pFile, "{%u,%u,%u},", best_lo, best_hi, (uint32_t)best_err); - n++; - if ((n & 31) == 31) - fprintf(pFile, "\n"); - } // m - } // sr - } // g - } // inten - - fclose(pFile); - } -#endif // BASISD_WRITE_NEW_ATC_TABLES - -#endif // BASISD_SUPPORT_ATC - -#if BASISD_SUPPORT_PVRTC2 - struct pvrtc2_block - { - uint8_t m_modulation[4]; - - union - { - union - { - // Opaque mode: RGB colora=554 and colorb=555 - struct - { - uint32_t m_mod_flag : 1; - uint32_t m_blue_a : 4; - uint32_t m_green_a : 5; - uint32_t m_red_a : 5; - uint32_t m_hard_flag : 1; - uint32_t m_blue_b : 5; - uint32_t m_green_b : 5; - uint32_t m_red_b : 5; - uint32_t m_opaque_flag : 1; - - } m_opaque_color_data; - - // Transparent mode: RGBA colora=4433 and colorb=4443 - struct - { - uint32_t m_mod_flag : 1; - uint32_t m_blue_a : 3; - uint32_t m_green_a : 4; - uint32_t m_red_a : 4; - uint32_t m_alpha_a : 3; - uint32_t m_hard_flag : 1; - uint32_t m_blue_b : 4; - uint32_t m_green_b : 4; - uint32_t m_red_b : 4; - uint32_t m_alpha_b : 3; - uint32_t m_opaque_flag : 1; - - } m_trans_color_data; - }; - - uint32_t m_color_data_bits; - }; - - // 554 - void set_low_color(uint32_t r, uint32_t g, uint32_t b) - { - assert((r < 32) && (g < 32) && (b < 16)); - m_opaque_color_data.m_red_a = r; - m_opaque_color_data.m_green_a = g; - m_opaque_color_data.m_blue_a = b; - } - - // 555 - void set_high_color(uint32_t r, uint32_t g, uint32_t b) - { - assert((r < 32) && (g < 32) && (b < 32)); - m_opaque_color_data.m_red_b = r; - m_opaque_color_data.m_green_b = g; - m_opaque_color_data.m_blue_b = b; - } - - // 4433 - void set_trans_low_color(uint32_t r, uint32_t g, uint32_t b, uint32_t a) - { - assert((r < 16) && (g < 16) && (b < 8) && (a < 8)); - m_trans_color_data.m_red_a = r; - m_trans_color_data.m_green_a = g; - m_trans_color_data.m_blue_a = b; - m_trans_color_data.m_alpha_a = a; - } - - // 4443 - void set_trans_high_color(uint32_t r, uint32_t g, uint32_t b, uint32_t a) - { - assert((r < 16) && (g < 16) && (b < 16) && (a < 8)); - m_trans_color_data.m_red_b = r; - m_trans_color_data.m_green_b = g; - m_trans_color_data.m_blue_b = b; - m_trans_color_data.m_alpha_b = a; - } - }; - - static struct - { - uint8_t m_l, m_h; - } g_pvrtc2_trans_match34[256]; - - static struct - { - uint8_t m_l, m_h; - } g_pvrtc2_trans_match44[256]; - - static struct - { - uint8_t m_l, m_h; - } g_pvrtc2_alpha_match33[256]; - - static struct - { - uint8_t m_l, m_h; - } g_pvrtc2_alpha_match33_0[256]; - - static struct - { - uint8_t m_l, m_h; - } g_pvrtc2_alpha_match33_3[256]; - - // PVRTC2 can be forced to look like a slightly weaker variant of ATC/BC1, so that's what we do here for simplicity. - static void convert_etc1s_to_pvrtc2_rgb(void* pDst, const endpoint* pEndpoints, const selector* pSelector) - { - pvrtc2_block* pBlock = static_cast(pDst); - - pBlock->m_opaque_color_data.m_hard_flag = 1; - pBlock->m_opaque_color_data.m_mod_flag = 0; - pBlock->m_opaque_color_data.m_opaque_flag = 1; - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - if (low_selector == high_selector) - { - uint32_t r, g, b; - decoder_etc_block::get_block_color5(base_color, inten_table, low_selector, r, g, b); - - pBlock->set_low_color(g_atc_match55_equals_1[r].m_lo, g_atc_match55_equals_1[g].m_lo, g_pvrtc2_match45_equals_1[b].m_lo); - pBlock->set_high_color(g_atc_match55_equals_1[r].m_hi, g_atc_match55_equals_1[g].m_hi, g_pvrtc2_match45_equals_1[b].m_hi); - - pBlock->m_modulation[0] = 0x55; - pBlock->m_modulation[1] = 0x55; - pBlock->m_modulation[2] = 0x55; - pBlock->m_modulation[3] = 0x55; - - return; - } - else if ((inten_table >= 7) && (pSelector->m_num_unique_selectors == 2) && (pSelector->m_lo_selector == 0) && (pSelector->m_hi_selector == 3)) - { - color32 block_colors[4]; - decoder_etc_block::get_block_colors5(block_colors, base_color, inten_table); - - const uint32_t r0 = block_colors[0].r; - const uint32_t g0 = block_colors[0].g; - const uint32_t b0 = block_colors[0].b; - - const uint32_t r1 = block_colors[3].r; - const uint32_t g1 = block_colors[3].g; - const uint32_t b1 = block_colors[3].b; - - pBlock->set_low_color(g_atc_match5[r0].m_hi, g_atc_match5[g0].m_hi, g_pvrtc2_match4[b0].m_hi); - pBlock->set_high_color(g_atc_match5[r1].m_hi, g_atc_match5[g1].m_hi, g_atc_match5[b1].m_hi); - - pBlock->m_modulation[0] = pSelector->m_selectors[0]; - pBlock->m_modulation[1] = pSelector->m_selectors[1]; - pBlock->m_modulation[2] = pSelector->m_selectors[2]; - pBlock->m_modulation[3] = pSelector->m_selectors[3]; - - return; - } - - const uint32_t selector_range_table = g_etc1s_to_atc_selector_range_index[low_selector][high_selector]; - - //[32][8][RANGES][MAPPING] - const etc1s_to_atc_solution* pTable_r = &g_etc1s_to_atc_55[(inten_table * 32 + base_color.r) * (NUM_ETC1S_TO_ATC_SELECTOR_RANGES * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS]; - const etc1s_to_atc_solution* pTable_g = &g_etc1s_to_atc_55[(inten_table * 32 + base_color.g) * (NUM_ETC1S_TO_ATC_SELECTOR_RANGES * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS]; - const etc1s_to_atc_solution* pTable_b = &g_etc1s_to_pvrtc2_45[(inten_table * 32 + base_color.b) * (NUM_ETC1S_TO_ATC_SELECTOR_RANGES * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS) + selector_range_table * NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS]; - - uint32_t best_err = UINT_MAX; - uint32_t best_mapping = 0; - - assert(NUM_ETC1S_TO_ATC_SELECTOR_MAPPINGS == 10); -#define DO_ITER(m) { uint32_t total_err = pTable_r[m].m_err + pTable_g[m].m_err + pTable_b[m].m_err; if (total_err < best_err) { best_err = total_err; best_mapping = m; } } - DO_ITER(0); DO_ITER(1); DO_ITER(2); DO_ITER(3); DO_ITER(4); - DO_ITER(5); DO_ITER(6); DO_ITER(7); DO_ITER(8); DO_ITER(9); -#undef DO_ITER - - pBlock->set_low_color(pTable_r[best_mapping].m_lo, pTable_g[best_mapping].m_lo, pTable_b[best_mapping].m_lo); - pBlock->set_high_color(pTable_r[best_mapping].m_hi, pTable_g[best_mapping].m_hi, pTable_b[best_mapping].m_hi); - - if (ATC_IDENTITY_SELECTOR_MAPPING_INDEX == best_mapping) - { - pBlock->m_modulation[0] = pSelector->m_selectors[0]; - pBlock->m_modulation[1] = pSelector->m_selectors[1]; - pBlock->m_modulation[2] = pSelector->m_selectors[2]; - pBlock->m_modulation[3] = pSelector->m_selectors[3]; - } - else - { - // TODO: We could make this faster using several precomputed 256 entry tables, like ETC1S->BC1 does. - const uint8_t* pSelectors_xlat = &g_etc1s_to_atc_selector_mappings[best_mapping][0]; - - const uint32_t sel_bits0 = pSelector->m_selectors[0]; - const uint32_t sel_bits1 = pSelector->m_selectors[1]; - const uint32_t sel_bits2 = pSelector->m_selectors[2]; - const uint32_t sel_bits3 = pSelector->m_selectors[3]; - - uint32_t sels0 = 0, sels1 = 0, sels2 = 0, sels3 = 0; - -#define DO_X(x) { \ - const uint32_t x_shift = (x) * 2; \ - sels0 |= (pSelectors_xlat[(sel_bits0 >> x_shift) & 3] << x_shift); \ - sels1 |= (pSelectors_xlat[(sel_bits1 >> x_shift) & 3] << x_shift); \ - sels2 |= (pSelectors_xlat[(sel_bits2 >> x_shift) & 3] << x_shift); \ - sels3 |= (pSelectors_xlat[(sel_bits3 >> x_shift) & 3] << x_shift); } - - DO_X(0); - DO_X(1); - DO_X(2); - DO_X(3); -#undef DO_X - - pBlock->m_modulation[0] = (uint8_t)sels0; - pBlock->m_modulation[1] = (uint8_t)sels1; - pBlock->m_modulation[2] = (uint8_t)sels2; - pBlock->m_modulation[3] = (uint8_t)sels3; - } - } - - typedef struct { float c[4]; } vec4F; - - static inline vec4F* vec4F_set_scalar(vec4F* pV, float x) { pV->c[0] = x; pV->c[1] = x; pV->c[2] = x; pV->c[3] = x; return pV; } - static inline vec4F* vec4F_set(vec4F* pV, float x, float y, float z, float w) { pV->c[0] = x; pV->c[1] = y; pV->c[2] = z; pV->c[3] = w; return pV; } - static inline vec4F* vec4F_saturate_in_place(vec4F* pV) { pV->c[0] = saturate(pV->c[0]); pV->c[1] = saturate(pV->c[1]); pV->c[2] = saturate(pV->c[2]); pV->c[3] = saturate(pV->c[3]); return pV; } - static inline vec4F vec4F_saturate(const vec4F* pV) { vec4F res; res.c[0] = saturate(pV->c[0]); res.c[1] = saturate(pV->c[1]); res.c[2] = saturate(pV->c[2]); res.c[3] = saturate(pV->c[3]); return res; } - static inline vec4F vec4F_from_color(const color32* pC) { vec4F res; vec4F_set(&res, pC->c[0], pC->c[1], pC->c[2], pC->c[3]); return res; } - static inline vec4F vec4F_add(const vec4F* pLHS, const vec4F* pRHS) { vec4F res; vec4F_set(&res, pLHS->c[0] + pRHS->c[0], pLHS->c[1] + pRHS->c[1], pLHS->c[2] + pRHS->c[2], pLHS->c[3] + pRHS->c[3]); return res; } - static inline vec4F vec4F_sub(const vec4F* pLHS, const vec4F* pRHS) { vec4F res; vec4F_set(&res, pLHS->c[0] - pRHS->c[0], pLHS->c[1] - pRHS->c[1], pLHS->c[2] - pRHS->c[2], pLHS->c[3] - pRHS->c[3]); return res; } - static inline float vec4F_dot(const vec4F* pLHS, const vec4F* pRHS) { return pLHS->c[0] * pRHS->c[0] + pLHS->c[1] * pRHS->c[1] + pLHS->c[2] * pRHS->c[2] + pLHS->c[3] * pRHS->c[3]; } - static inline vec4F vec4F_mul(const vec4F* pLHS, float s) { vec4F res; vec4F_set(&res, pLHS->c[0] * s, pLHS->c[1] * s, pLHS->c[2] * s, pLHS->c[3] * s); return res; } - static inline vec4F* vec4F_normalize_in_place(vec4F* pV) { float s = pV->c[0] * pV->c[0] + pV->c[1] * pV->c[1] + pV->c[2] * pV->c[2] + pV->c[3] * pV->c[3]; if (s != 0.0f) { s = 1.0f / sqrtf(s); pV->c[0] *= s; pV->c[1] *= s; pV->c[2] *= s; pV->c[3] *= s; } return pV; } - - static color32 convert_rgba_5554_to_8888(const color32& col) - { - return color32((col[0] << 3) | (col[0] >> 2), (col[1] << 3) | (col[1] >> 2), (col[2] << 3) | (col[2] >> 2), (col[3] << 4) | col[3]); - } - - static inline int sq(int x) { return x * x; } - - // PVRTC2 is a slightly borked format for alpha: In Non-Interpolated mode, the way AlphaB8 is exanded from 4 to 8 bits means it can never be 0. - // This is actually very bad, because on 100% transparent blocks which have non-trivial color pixels, part of the color channel will leak into alpha! - // And there's nothing straightforward we can do because using the other modes is too expensive/complex. I can see why Apple didn't adopt it. - static void convert_etc1s_to_pvrtc2_rgba(void* pDst, const endpoint* pEndpoints, const selector* pSelector, const endpoint* pEndpoint_codebook, const selector* pSelector_codebook) - { - pvrtc2_block* pBlock = static_cast(pDst); - - const endpoint& alpha_endpoint = pEndpoint_codebook[((uint16_t*)pBlock)[0]]; - const selector& alpha_selectors = pSelector_codebook[((uint16_t*)pBlock)[1]]; - - pBlock->m_opaque_color_data.m_hard_flag = 1; - pBlock->m_opaque_color_data.m_mod_flag = 0; - pBlock->m_opaque_color_data.m_opaque_flag = 0; - - const int num_unique_alpha_selectors = alpha_selectors.m_num_unique_selectors; - - const color32& alpha_base_color = alpha_endpoint.m_color5; - const uint32_t alpha_inten_table = alpha_endpoint.m_inten5; - - int constant_alpha_val = -1; - - int alpha_block_colors[4]; - decoder_etc_block::get_block_colors5_g(alpha_block_colors, alpha_base_color, alpha_inten_table); - - if (num_unique_alpha_selectors == 1) - { - constant_alpha_val = alpha_block_colors[alpha_selectors.m_lo_selector]; - } - else - { - constant_alpha_val = alpha_block_colors[alpha_selectors.m_lo_selector]; - - for (uint32_t i = alpha_selectors.m_lo_selector + 1; i <= alpha_selectors.m_hi_selector; i++) - { - if (constant_alpha_val != alpha_block_colors[i]) - { - constant_alpha_val = -1; - break; - } - } - } - - if (constant_alpha_val >= 250) - { - // It's opaque enough, so don't bother trying to encode it as an alpha block. - convert_etc1s_to_pvrtc2_rgb(pDst, pEndpoints, pSelector); - return; - } - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - const int num_unique_color_selectors = pSelector->m_num_unique_selectors; - - // We need to reencode the block at the pixel level, unfortunately, from two ETC1S planes. - // Do 4D incremental PCA, project all pixels to this hyperline, then quantize to packed endpoints and compute the modulation values. - const int br = (base_color.r << 3) | (base_color.r >> 2); - const int bg = (base_color.g << 3) | (base_color.g >> 2); - const int bb = (base_color.b << 3) | (base_color.b >> 2); - - color32 block_cols[4]; - for (uint32_t i = 0; i < 4; i++) - { - const int ci = g_etc1_inten_tables[inten_table][i]; - block_cols[i].set_clamped(br + ci, bg + ci, bb + ci, alpha_block_colors[i]); - } - - bool solid_color_block = true; - if (num_unique_color_selectors > 1) - { - for (uint32_t i = low_selector + 1; i <= high_selector; i++) - { - if ((block_cols[low_selector].r != block_cols[i].r) || (block_cols[low_selector].g != block_cols[i].g) || (block_cols[low_selector].b != block_cols[i].b)) - { - solid_color_block = false; - break; - } - } - } - - if ((solid_color_block) && (constant_alpha_val >= 0)) - { - // Constant color/alpha block. - // This is more complex than it may seem because of the way color and alpha are packed in PVRTC2. We need to evaluate mod0, mod1 and mod3 encodings to find the best one. - uint32_t r, g, b; - decoder_etc_block::get_block_color5(base_color, inten_table, low_selector, r, g, b); - - // Mod 0 - uint32_t lr0 = (r * 15 + 128) / 255, lg0 = (g * 15 + 128) / 255, lb0 = (b * 7 + 128) / 255; - uint32_t la0 = g_pvrtc2_alpha_match33_0[constant_alpha_val].m_l; - - uint32_t cr0 = (lr0 << 1) | (lr0 >> 3); - uint32_t cg0 = (lg0 << 1) | (lg0 >> 3); - uint32_t cb0 = (lb0 << 2) | (lb0 >> 1); - uint32_t ca0 = (la0 << 1); - - cr0 = (cr0 << 3) | (cr0 >> 2); - cg0 = (cg0 << 3) | (cg0 >> 2); - cb0 = (cb0 << 3) | (cb0 >> 2); - ca0 = (ca0 << 4) | ca0; - - uint32_t err0 = sq(cr0 - r) + sq(cg0 - g) + sq(cb0 - b) + sq(ca0 - constant_alpha_val) * 2; - - // If the alpha is < 3 or so we're kinda screwed. It's better to have some RGB error than it is to turn a 100% transparent area slightly opaque. - if ((err0 == 0) || (constant_alpha_val < 3)) - { - pBlock->set_trans_low_color(lr0, lg0, lb0, la0); - pBlock->set_trans_high_color(0, 0, 0, 0); - - pBlock->m_modulation[0] = 0; - pBlock->m_modulation[1] = 0; - pBlock->m_modulation[2] = 0; - pBlock->m_modulation[3] = 0; - return; - } - - // Mod 3 - uint32_t lr3 = (r * 15 + 128) / 255, lg3 = (g * 15 + 128) / 255, lb3 = (b * 15 + 128) / 255; - uint32_t la3 = g_pvrtc2_alpha_match33_3[constant_alpha_val].m_l; - - uint32_t cr3 = (lr3 << 1) | (lr3 >> 3); - uint32_t cg3 = (lg3 << 1) | (lg3 >> 3); - uint32_t cb3 = (lb3 << 1) | (lb3 >> 3); - uint32_t ca3 = (la3 << 1) | 1; - - cr3 = (cr3 << 3) | (cr3 >> 2); - cg3 = (cg3 << 3) | (cg3 >> 2); - cb3 = (cb3 << 3) | (cb3 >> 2); - ca3 = (ca3 << 4) | ca3; - - uint32_t err3 = sq(cr3 - r) + sq(cg3 - g) + sq(cb3 - b) + sq(ca3 - constant_alpha_val) * 2; - - // Mod 1 - uint32_t lr1 = g_pvrtc2_trans_match44[r].m_l, lg1 = g_pvrtc2_trans_match44[g].m_l, lb1 = g_pvrtc2_trans_match34[b].m_l; - uint32_t hr1 = g_pvrtc2_trans_match44[r].m_h, hg1 = g_pvrtc2_trans_match44[g].m_h, hb1 = g_pvrtc2_trans_match34[b].m_h; - uint32_t la1 = g_pvrtc2_alpha_match33[constant_alpha_val].m_l, ha1 = g_pvrtc2_alpha_match33[constant_alpha_val].m_h; - - uint32_t clr1 = (lr1 << 1) | (lr1 >> 3); - uint32_t clg1 = (lg1 << 1) | (lg1 >> 3); - uint32_t clb1 = (lb1 << 2) | (lb1 >> 1); - uint32_t cla1 = (la1 << 1); - - clr1 = (clr1 << 3) | (clr1 >> 2); - clg1 = (clg1 << 3) | (clg1 >> 2); - clb1 = (clb1 << 3) | (clb1 >> 2); - cla1 = (cla1 << 4) | cla1; - - uint32_t chr1 = (hr1 << 1) | (hr1 >> 3); - uint32_t chg1 = (hg1 << 1) | (hg1 >> 3); - uint32_t chb1 = (hb1 << 1) | (hb1 >> 3); - uint32_t cha1 = (ha1 << 1) | 1; - - chr1 = (chr1 << 3) | (chr1 >> 2); - chg1 = (chg1 << 3) | (chg1 >> 2); - chb1 = (chb1 << 3) | (chb1 >> 2); - cha1 = (cha1 << 4) | cha1; - - uint32_t r1 = (clr1 * 5 + chr1 * 3) / 8; - uint32_t g1 = (clg1 * 5 + chg1 * 3) / 8; - uint32_t b1 = (clb1 * 5 + chb1 * 3) / 8; - uint32_t a1 = (cla1 * 5 + cha1 * 3) / 8; - - uint32_t err1 = sq(r1 - r) + sq(g1 - g) + sq(b1 - b) + sq(a1 - constant_alpha_val) * 2; - - if ((err1 < err0) && (err1 < err3)) - { - pBlock->set_trans_low_color(lr1, lg1, lb1, la1); - pBlock->set_trans_high_color(hr1, hg1, hb1, ha1); - - pBlock->m_modulation[0] = 0x55; - pBlock->m_modulation[1] = 0x55; - pBlock->m_modulation[2] = 0x55; - pBlock->m_modulation[3] = 0x55; - } - else if (err0 < err3) - { - pBlock->set_trans_low_color(lr0, lg0, lb0, la0); - pBlock->set_trans_high_color(0, 0, 0, 0); - - pBlock->m_modulation[0] = 0; - pBlock->m_modulation[1] = 0; - pBlock->m_modulation[2] = 0; - pBlock->m_modulation[3] = 0; - } - else - { - pBlock->set_trans_low_color(0, 0, 0, 0); - pBlock->set_trans_high_color(lr3, lg3, lb3, la3); - - pBlock->m_modulation[0] = 0xFF; - pBlock->m_modulation[1] = 0xFF; - pBlock->m_modulation[2] = 0xFF; - pBlock->m_modulation[3] = 0xFF; - } - - return; - } - - // It's a complex block with non-solid color and/or alpha pixels. - vec4F minColor, maxColor; - - if (solid_color_block) - { - // It's a solid color block. - uint32_t low_a = block_cols[alpha_selectors.m_lo_selector].a; - uint32_t high_a = block_cols[alpha_selectors.m_hi_selector].a; - - const float S = 1.0f / 255.0f; - vec4F_set(&minColor, block_cols[low_selector].r * S, block_cols[low_selector].g * S, block_cols[low_selector].b * S, low_a * S); - vec4F_set(&maxColor, block_cols[low_selector].r * S, block_cols[low_selector].g * S, block_cols[low_selector].b * S, high_a * S); - } - else if (constant_alpha_val >= 0) - { - // It's a solid alpha block. - const float S = 1.0f / 255.0f; - vec4F_set(&minColor, block_cols[low_selector].r * S, block_cols[low_selector].g * S, block_cols[low_selector].b * S, constant_alpha_val * S); - vec4F_set(&maxColor, block_cols[high_selector].r * S, block_cols[high_selector].g * S, block_cols[high_selector].b * S, constant_alpha_val * S); - } - // See if any of the block colors got clamped - if so the principle axis got distorted (it's no longer just the ETC1S luma axis). - // To keep quality up we need to use full 4D PCA in this case. - else if ((block_cols[low_selector].c[0] == 0) || (block_cols[high_selector].c[0] == 255) || - (block_cols[low_selector].c[1] == 0) || (block_cols[high_selector].c[1] == 255) || - (block_cols[low_selector].c[2] == 0) || (block_cols[high_selector].c[2] == 255) || - (block_cols[alpha_selectors.m_lo_selector].c[3] == 0) || (block_cols[alpha_selectors.m_hi_selector].c[3] == 255)) - { - // Find principle component of RGBA colors treated as 4D vectors. - color32 pixels[16]; - - uint32_t sum_r = 0, sum_g = 0, sum_b = 0, sum_a = 0; - for (uint32_t i = 0; i < 16; i++) - { - color32 rgb(block_cols[pSelector->get_selector(i & 3, i >> 2)]); - uint32_t a = block_cols[alpha_selectors.get_selector(i & 3, i >> 2)].a; - - pixels[i].set(rgb.r, rgb.g, rgb.b, a); - - sum_r += rgb.r; - sum_g += rgb.g; - sum_b += rgb.b; - sum_a += a; - } - - vec4F meanColor; - vec4F_set(&meanColor, (float)sum_r, (float)sum_g, (float)sum_b, (float)sum_a); - vec4F meanColorScaled = vec4F_mul(&meanColor, 1.0f / 16.0f); - - meanColor = vec4F_mul(&meanColor, 1.0f / (float)(16.0f * 255.0f)); - vec4F_saturate_in_place(&meanColor); - - vec4F axis; - vec4F_set_scalar(&axis, 0.0f); - // Why this incremental method? Because it's stable and predictable. Covar+power method can require a lot of iterations to converge in 4D. - for (uint32_t i = 0; i < 16; i++) - { - vec4F color = vec4F_from_color(&pixels[i]); - color = vec4F_sub(&color, &meanColorScaled); - vec4F a = vec4F_mul(&color, color.c[0]); - vec4F b = vec4F_mul(&color, color.c[1]); - vec4F c = vec4F_mul(&color, color.c[2]); - vec4F d = vec4F_mul(&color, color.c[3]); - vec4F n = i ? axis : color; - vec4F_normalize_in_place(&n); - axis.c[0] += vec4F_dot(&a, &n); - axis.c[1] += vec4F_dot(&b, &n); - axis.c[2] += vec4F_dot(&c, &n); - axis.c[3] += vec4F_dot(&d, &n); - } - - vec4F_normalize_in_place(&axis); - - if (vec4F_dot(&axis, &axis) < .5f) - vec4F_set_scalar(&axis, .5f); - - float l = 1e+9f, h = -1e+9f; - - for (uint32_t i = 0; i < 16; i++) - { - vec4F color = vec4F_from_color(&pixels[i]); - - vec4F q = vec4F_sub(&color, &meanColorScaled); - float d = vec4F_dot(&q, &axis); - - l = basisu::minimum(l, d); - h = basisu::maximum(h, d); - } - - l *= (1.0f / 255.0f); - h *= (1.0f / 255.0f); - - vec4F b0 = vec4F_mul(&axis, l); - vec4F b1 = vec4F_mul(&axis, h); - vec4F c0 = vec4F_add(&meanColor, &b0); - vec4F c1 = vec4F_add(&meanColor, &b1); - minColor = vec4F_saturate(&c0); - maxColor = vec4F_saturate(&c1); - if (minColor.c[3] > maxColor.c[3]) - { - // VS 2019 release Code Generator issue - //std::swap(minColor, maxColor); - - float a = minColor.c[0], b = minColor.c[1], c = minColor.c[2], d = minColor.c[3]; - minColor.c[0] = maxColor.c[0]; minColor.c[1] = maxColor.c[1]; minColor.c[2] = maxColor.c[2]; minColor.c[3] = maxColor.c[3]; - minColor.c[0] = maxColor.c[0]; minColor.c[1] = maxColor.c[1]; minColor.c[2] = maxColor.c[2]; minColor.c[3] = maxColor.c[3]; - maxColor.c[0] = a; maxColor.c[1] = b; maxColor.c[2] = c; maxColor.c[3] = d; - } - } - else - { - // We know the RGB axis is luma, because it's an ETC1S block and none of the block colors got clamped. So we only need to use 2D PCA. - // We project each LA vector onto two 2D lines with axes (1,1) and (1,-1) and find the largest projection to determine if axis A is flipped relative to L. - uint32_t block_cols_l[4], block_cols_a[4]; - for (uint32_t i = 0; i < 4; i++) - { - block_cols_l[i] = block_cols[i].r + block_cols[i].g + block_cols[i].b; - block_cols_a[i] = block_cols[i].a * 3; - } - - int p0_min = INT_MAX, p0_max = INT_MIN; - int p1_min = INT_MAX, p1_max = INT_MIN; - for (uint32_t y = 0; y < 4; y++) - { - const uint32_t cs = pSelector->m_selectors[y]; - const uint32_t as = alpha_selectors.m_selectors[y]; - - { - const int l = block_cols_l[cs & 3]; - const int a = block_cols_a[as & 3]; - const int p0 = l + a; p0_min = basisu::minimum(p0_min, p0); p0_max = basisu::maximum(p0_max, p0); - const int p1 = l - a; p1_min = basisu::minimum(p1_min, p1); p1_max = basisu::maximum(p1_max, p1); - } - { - const int l = block_cols_l[(cs >> 2) & 3]; - const int a = block_cols_a[(as >> 2) & 3]; - const int p0 = l + a; p0_min = basisu::minimum(p0_min, p0); p0_max = basisu::maximum(p0_max, p0); - const int p1 = l - a; p1_min = basisu::minimum(p1_min, p1); p1_max = basisu::maximum(p1_max, p1); - } - { - const int l = block_cols_l[(cs >> 4) & 3]; - const int a = block_cols_a[(as >> 4) & 3]; - const int p0 = l + a; p0_min = basisu::minimum(p0_min, p0); p0_max = basisu::maximum(p0_max, p0); - const int p1 = l - a; p1_min = basisu::minimum(p1_min, p1); p1_max = basisu::maximum(p1_max, p1); - } - { - const int l = block_cols_l[cs >> 6]; - const int a = block_cols_a[as >> 6]; - const int p0 = l + a; p0_min = basisu::minimum(p0_min, p0); p0_max = basisu::maximum(p0_max, p0); - const int p1 = l - a; p1_min = basisu::minimum(p1_min, p1); p1_max = basisu::maximum(p1_max, p1); - } - } - - int dist0 = p0_max - p0_min; - int dist1 = p1_max - p1_min; - - const float S = 1.0f / 255.0f; - - vec4F_set(&minColor, block_cols[low_selector].r * S, block_cols[low_selector].g * S, block_cols[low_selector].b * S, block_cols[alpha_selectors.m_lo_selector].a * S); - vec4F_set(&maxColor, block_cols[high_selector].r * S, block_cols[high_selector].g * S, block_cols[high_selector].b * S, block_cols[alpha_selectors.m_hi_selector].a * S); - - // See if the A component of the principle axis is flipped relative to L. If so, we need to flip either RGB or A bounds. - if (dist1 > dist0) - { - std::swap(minColor.c[0], maxColor.c[0]); - std::swap(minColor.c[1], maxColor.c[1]); - std::swap(minColor.c[2], maxColor.c[2]); - } - } - - // 4433 4443 - color32 trialMinColor, trialMaxColor; - - trialMinColor.set_clamped((int)(minColor.c[0] * 15.0f + .5f), (int)(minColor.c[1] * 15.0f + .5f), (int)(minColor.c[2] * 7.0f + .5f), (int)(minColor.c[3] * 7.0f + .5f)); - trialMaxColor.set_clamped((int)(maxColor.c[0] * 15.0f + .5f), (int)(maxColor.c[1] * 15.0f + .5f), (int)(maxColor.c[2] * 15.0f + .5f), (int)(maxColor.c[3] * 7.0f + .5f)); - - pBlock->set_trans_low_color(trialMinColor.r, trialMinColor.g, trialMinColor.b, trialMinColor.a); - pBlock->set_trans_high_color(trialMaxColor.r, trialMaxColor.g, trialMaxColor.b, trialMaxColor.a); - - color32 color_a((trialMinColor.r << 1) | (trialMinColor.r >> 3), (trialMinColor.g << 1) | (trialMinColor.g >> 3), (trialMinColor.b << 2) | (trialMinColor.b >> 1), trialMinColor.a << 1); - color32 color_b((trialMaxColor.r << 1) | (trialMaxColor.r >> 3), (trialMaxColor.g << 1) | (trialMaxColor.g >> 3), (trialMaxColor.b << 1) | (trialMaxColor.b >> 3), (trialMaxColor.a << 1) | 1); - - color32 color0(convert_rgba_5554_to_8888(color_a)); - color32 color3(convert_rgba_5554_to_8888(color_b)); - - const int lr = color0.r; - const int lg = color0.g; - const int lb = color0.b; - const int la = color0.a; - - const int axis_r = color3.r - lr; - const int axis_g = color3.g - lg; - const int axis_b = color3.b - lb; - const int axis_a = color3.a - la; - const int len_a = (axis_r * axis_r) + (axis_g * axis_g) + (axis_b * axis_b) + (axis_a * axis_a); - - const int thresh01 = (len_a * 3) / 16; - const int thresh12 = len_a >> 1; - const int thresh23 = (len_a * 13) / 16; - - if ((axis_r | axis_g | axis_b) == 0) - { - int ca_sel[4]; - - for (uint32_t i = 0; i < 4; i++) - { - int ca = (block_cols[i].a - la) * axis_a; - ca_sel[i] = (ca >= thresh23) + (ca >= thresh12) + (ca >= thresh01); - } - - for (uint32_t y = 0; y < 4; y++) - { - const uint32_t a_sels = alpha_selectors.m_selectors[y]; - - uint32_t sel = ca_sel[a_sels & 3] | (ca_sel[(a_sels >> 2) & 3] << 2) | (ca_sel[(a_sels >> 4) & 3] << 4) | (ca_sel[a_sels >> 6] << 6); - - pBlock->m_modulation[y] = (uint8_t)sel; - } - } - else - { - int cy[4], ca[4]; - - for (uint32_t i = 0; i < 4; i++) - { - cy[i] = (block_cols[i].r - lr) * axis_r + (block_cols[i].g - lg) * axis_g + (block_cols[i].b - lb) * axis_b; - ca[i] = (block_cols[i].a - la) * axis_a; - } - - for (uint32_t y = 0; y < 4; y++) - { - const uint32_t c_sels = pSelector->m_selectors[y]; - const uint32_t a_sels = alpha_selectors.m_selectors[y]; - - const int d0 = cy[c_sels & 3] + ca[a_sels & 3]; - const int d1 = cy[(c_sels >> 2) & 3] + ca[(a_sels >> 2) & 3]; - const int d2 = cy[(c_sels >> 4) & 3] + ca[(a_sels >> 4) & 3]; - const int d3 = cy[c_sels >> 6] + ca[a_sels >> 6]; - - uint32_t sel = ((d0 >= thresh23) + (d0 >= thresh12) + (d0 >= thresh01)) | - (((d1 >= thresh23) + (d1 >= thresh12) + (d1 >= thresh01)) << 2) | - (((d2 >= thresh23) + (d2 >= thresh12) + (d2 >= thresh01)) << 4) | - (((d3 >= thresh23) + (d3 >= thresh12) + (d3 >= thresh01)) << 6); - - pBlock->m_modulation[y] = (uint8_t)sel; - } - } - } - - static void transcoder_init_pvrtc2() - { - for (uint32_t v = 0; v < 256; v++) - { - int best_l = 0, best_h = 0, lowest_err = INT_MAX; - - for (uint32_t l = 0; l < 8; l++) - { - uint32_t le = (l << 1); - le = (le << 4) | le; - - for (uint32_t h = 0; h < 8; h++) - { - uint32_t he = (h << 1) | 1; - he = (he << 4) | he; - - uint32_t m = (le * 5 + he * 3) / 8; - - int err = (int)labs((int)v - (int)m); - if (err < lowest_err) - { - lowest_err = err; - best_l = l; - best_h = h; - } - } - } - - g_pvrtc2_alpha_match33[v].m_l = (uint8_t)best_l; - g_pvrtc2_alpha_match33[v].m_h = (uint8_t)best_h; - } - - for (uint32_t v = 0; v < 256; v++) - { - int best_l = 0, best_h = 0, lowest_err = INT_MAX; - - for (uint32_t l = 0; l < 8; l++) - { - uint32_t le = (l << 1); - le = (le << 4) | le; - - int err = (int)labs((int)v - (int)le); - if (err < lowest_err) - { - lowest_err = err; - best_l = l; - best_h = l; - } - } - - g_pvrtc2_alpha_match33_0[v].m_l = (uint8_t)best_l; - g_pvrtc2_alpha_match33_0[v].m_h = (uint8_t)best_h; - } - - for (uint32_t v = 0; v < 256; v++) - { - int best_l = 0, best_h = 0, lowest_err = INT_MAX; - - for (uint32_t h = 0; h < 8; h++) - { - uint32_t he = (h << 1) | 1; - he = (he << 4) | he; - - int err = (int)labs((int)v - (int)he); - if (err < lowest_err) - { - lowest_err = err; - best_l = h; - best_h = h; - } - } - - g_pvrtc2_alpha_match33_3[v].m_l = (uint8_t)best_l; - g_pvrtc2_alpha_match33_3[v].m_h = (uint8_t)best_h; - } - - for (uint32_t v = 0; v < 256; v++) - { - int best_l = 0, best_h = 0, lowest_err = INT_MAX; - - for (uint32_t l = 0; l < 8; l++) - { - uint32_t le = (l << 2) | (l >> 1); - le = (le << 3) | (le >> 2); - - for (uint32_t h = 0; h < 16; h++) - { - uint32_t he = (h << 1) | (h >> 3); - he = (he << 3) | (he >> 2); - - uint32_t m = (le * 5 + he * 3) / 8; - - int err = (int)labs((int)v - (int)m); - if (err < lowest_err) - { - lowest_err = err; - best_l = l; - best_h = h; - } - } - } - - g_pvrtc2_trans_match34[v].m_l = (uint8_t)best_l; - g_pvrtc2_trans_match34[v].m_h = (uint8_t)best_h; - } - - for (uint32_t v = 0; v < 256; v++) - { - int best_l = 0, best_h = 0, lowest_err = INT_MAX; - - for (uint32_t l = 0; l < 16; l++) - { - uint32_t le = (l << 1) | (l >> 3); - le = (le << 3) | (le >> 2); - - for (uint32_t h = 0; h < 16; h++) - { - uint32_t he = (h << 1) | (h >> 3); - he = (he << 3) | (he >> 2); - - uint32_t m = (le * 5 + he * 3) / 8; - - int err = (int)labs((int)v - (int)m); - if (err < lowest_err) - { - lowest_err = err; - best_l = l; - best_h = h; - } - } - } - - g_pvrtc2_trans_match44[v].m_l = (uint8_t)best_l; - g_pvrtc2_trans_match44[v].m_h = (uint8_t)best_h; - } - } -#endif // BASISD_SUPPORT_PVRTC2 - - basisu_lowlevel_etc1s_transcoder::basisu_lowlevel_etc1s_transcoder() : - m_pGlobal_codebook(nullptr), - m_selector_history_buf_size(0) - { - } - - bool basisu_lowlevel_etc1s_transcoder::decode_palettes( - uint32_t num_endpoints, const uint8_t* pEndpoints_data, uint32_t endpoints_data_size, - uint32_t num_selectors, const uint8_t* pSelectors_data, uint32_t selectors_data_size) - { - if (m_pGlobal_codebook) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 11\n"); - return false; - } - bitwise_decoder sym_codec; - - huffman_decoding_table color5_delta_model0, color5_delta_model1, color5_delta_model2, inten_delta_model; - - if (!sym_codec.init(pEndpoints_data, endpoints_data_size)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 0\n"); - return false; - } - - if (!sym_codec.read_huffman_table(color5_delta_model0)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 1\n"); - return false; - } - - if (!sym_codec.read_huffman_table(color5_delta_model1)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 1a\n"); - return false; - } - - if (!sym_codec.read_huffman_table(color5_delta_model2)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 2a\n"); - return false; - } - - if (!sym_codec.read_huffman_table(inten_delta_model)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 2b\n"); - return false; - } - - if (!color5_delta_model0.is_valid() || !color5_delta_model1.is_valid() || !color5_delta_model2.is_valid() || !inten_delta_model.is_valid()) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 2b\n"); - return false; - } - - const bool endpoints_are_grayscale = sym_codec.get_bits(1) != 0; - - m_local_endpoints.resize(num_endpoints); - - color32 prev_color5(16, 16, 16, 0); - uint32_t prev_inten = 0; - - for (uint32_t i = 0; i < num_endpoints; i++) - { - uint32_t inten_delta = sym_codec.decode_huffman(inten_delta_model); - m_local_endpoints[i].m_inten5 = static_cast((inten_delta + prev_inten) & 7); - prev_inten = m_local_endpoints[i].m_inten5; - - for (uint32_t c = 0; c < (endpoints_are_grayscale ? 1U : 3U); c++) - { - int delta; - if (prev_color5[c] <= basist::COLOR5_PAL0_PREV_HI) - delta = sym_codec.decode_huffman(color5_delta_model0); - else if (prev_color5[c] <= basist::COLOR5_PAL1_PREV_HI) - delta = sym_codec.decode_huffman(color5_delta_model1); - else - delta = sym_codec.decode_huffman(color5_delta_model2); - - int v = (prev_color5[c] + delta) & 31; - - m_local_endpoints[i].m_color5[c] = static_cast(v); - - prev_color5[c] = static_cast(v); - } - - if (endpoints_are_grayscale) - { - m_local_endpoints[i].m_color5[1] = m_local_endpoints[i].m_color5[0]; - m_local_endpoints[i].m_color5[2] = m_local_endpoints[i].m_color5[0]; - } - } - - sym_codec.stop(); - - m_local_selectors.resize(num_selectors); - - if (!sym_codec.init(pSelectors_data, selectors_data_size)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 5\n"); - return false; - } - - basist::huffman_decoding_table delta_selector_pal_model; - - const bool used_global_selector_cb = (sym_codec.get_bits(1) == 1); - - if (used_global_selector_cb) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: global selector codebooks are unsupported\n"); - return false; - } - else - { - const bool used_hybrid_selector_cb = (sym_codec.get_bits(1) == 1); - - if (used_hybrid_selector_cb) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: hybrid global selector codebooks are unsupported\n"); - return false; - } - - const bool used_raw_encoding = (sym_codec.get_bits(1) == 1); - - if (used_raw_encoding) - { - for (uint32_t i = 0; i < num_selectors; i++) - { - for (uint32_t j = 0; j < 4; j++) - { - uint32_t cur_byte = sym_codec.get_bits(8); - - for (uint32_t k = 0; k < 4; k++) - m_local_selectors[i].set_selector(k, j, (cur_byte >> (k * 2)) & 3); - } - - m_local_selectors[i].init_flags(); - } - } - else - { - if (!sym_codec.read_huffman_table(delta_selector_pal_model)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 10\n"); - return false; - } - - if ((num_selectors > 1) && (!delta_selector_pal_model.is_valid())) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_palettes: fail 10a\n"); - return false; - } - - uint8_t prev_bytes[4] = { 0, 0, 0, 0 }; - - for (uint32_t i = 0; i < num_selectors; i++) - { - if (!i) - { - for (uint32_t j = 0; j < 4; j++) - { - uint32_t cur_byte = sym_codec.get_bits(8); - prev_bytes[j] = static_cast(cur_byte); - - for (uint32_t k = 0; k < 4; k++) - m_local_selectors[i].set_selector(k, j, (cur_byte >> (k * 2)) & 3); - } - m_local_selectors[i].init_flags(); - continue; - } - - for (uint32_t j = 0; j < 4; j++) - { - int delta_byte = sym_codec.decode_huffman(delta_selector_pal_model); - - uint32_t cur_byte = delta_byte ^ prev_bytes[j]; - prev_bytes[j] = static_cast(cur_byte); - - for (uint32_t k = 0; k < 4; k++) - m_local_selectors[i].set_selector(k, j, (cur_byte >> (k * 2)) & 3); - } - m_local_selectors[i].init_flags(); - } - } - } - - sym_codec.stop(); - - return true; - } - - bool basisu_lowlevel_etc1s_transcoder::decode_tables(const uint8_t* pTable_data, uint32_t table_data_size) - { - basist::bitwise_decoder sym_codec; - if (!sym_codec.init(pTable_data, table_data_size)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 0\n"); - return false; - } - - if (!sym_codec.read_huffman_table(m_endpoint_pred_model)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 1\n"); - return false; - } - - if (m_endpoint_pred_model.get_code_sizes().size() == 0) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 1a\n"); - return false; - } - - if (!sym_codec.read_huffman_table(m_delta_endpoint_model)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 2\n"); - return false; - } - - if (m_delta_endpoint_model.get_code_sizes().size() == 0) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 2a\n"); - return false; - } - - if (!sym_codec.read_huffman_table(m_selector_model)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 3\n"); - return false; - } - - if (m_selector_model.get_code_sizes().size() == 0) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 3a\n"); - return false; - } - - if (!sym_codec.read_huffman_table(m_selector_history_buf_rle_model)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 4\n"); - return false; - } - - if (m_selector_history_buf_rle_model.get_code_sizes().size() == 0) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 4a\n"); - return false; - } - - m_selector_history_buf_size = sym_codec.get_bits(13); - // Check for bogus values. - if (!m_selector_history_buf_size) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::decode_tables: fail 5\n"); - return false; - } - - sym_codec.stop(); - - return true; - } - - bool basisu_lowlevel_etc1s_transcoder::transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, const bool is_video, const bool is_alpha_slice, const uint32_t level_index, const uint32_t orig_width, const uint32_t orig_height, uint32_t output_row_pitch_in_blocks_or_pixels, - basisu_transcoder_state* pState, bool transcode_alpha, void *pAlpha_blocks, uint32_t output_rows_in_pixels) - { - // 'pDst_blocks' unused when disabling *all* hardware transcode options - // (and 'bc1_allow_threecolor_blocks' when disabling DXT) - BASISU_NOTE_UNUSED(pDst_blocks); - BASISU_NOTE_UNUSED(bc1_allow_threecolor_blocks); - BASISU_NOTE_UNUSED(transcode_alpha); - BASISU_NOTE_UNUSED(pAlpha_blocks); - - assert(g_transcoder_initialized); - if (!g_transcoder_initialized) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: Transcoder not globally initialized.\n"); - return false; - } - - if (!pState) - pState = &m_def_state; - - const uint32_t total_blocks = num_blocks_x * num_blocks_y; - - if (!output_row_pitch_in_blocks_or_pixels) - { - if (basis_block_format_is_uncompressed(fmt)) - output_row_pitch_in_blocks_or_pixels = orig_width; - else - { - if (fmt == block_format::cFXT1_RGB) - output_row_pitch_in_blocks_or_pixels = (orig_width + 7) / 8; - else - output_row_pitch_in_blocks_or_pixels = num_blocks_x; - } - } - - if (basis_block_format_is_uncompressed(fmt)) - { - if (!output_rows_in_pixels) - output_rows_in_pixels = orig_height; - } - - basisu::vector* pPrev_frame_indices = nullptr; - if (is_video) - { - // TODO: Add check to make sure the caller hasn't tried skipping past p-frames - //const bool alpha_flag = (slice_desc.m_flags & cSliceDescFlagsHasAlpha) != 0; - //const uint32_t level_index = slice_desc.m_level_index; - - if (level_index >= basisu_transcoder_state::cMaxPrevFrameLevels) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: unsupported level_index\n"); - return false; - } - - pPrev_frame_indices = &pState->m_prev_frame_indices[is_alpha_slice][level_index]; - if (pPrev_frame_indices->size() < total_blocks) - pPrev_frame_indices->resize(total_blocks); - } - - basist::bitwise_decoder sym_codec; - - if (!sym_codec.init(pImage_data, image_data_size)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: sym_codec.init failed\n"); - return false; - } - - approx_move_to_front selector_history_buf(m_selector_history_buf_size); - - uint32_t cur_selector_rle_count = 0; - - decoder_etc_block block; - memset(&block, 0, sizeof(block)); - - //block.set_flip_bit(true); - // Setting the flip bit to false to be compatible with the Khronos KDFS. - block.set_flip_bit(false); - - block.set_diff_bit(true); - - void* pPVRTC_work_mem = nullptr; - uint32_t* pPVRTC_endpoints = nullptr; - if ((fmt == block_format::cPVRTC1_4_RGB) || (fmt == block_format::cPVRTC1_4_RGBA)) - { - pPVRTC_work_mem = malloc(num_blocks_x * num_blocks_y * (sizeof(decoder_etc_block) + sizeof(uint32_t))); - if (!pPVRTC_work_mem) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: malloc failed\n"); - return false; - } - pPVRTC_endpoints = (uint32_t*) & ((decoder_etc_block*)pPVRTC_work_mem)[num_blocks_x * num_blocks_y]; - } - - if (pState->m_block_endpoint_preds[0].size() < num_blocks_x) - { - pState->m_block_endpoint_preds[0].resize(num_blocks_x); - pState->m_block_endpoint_preds[1].resize(num_blocks_x); - } - - uint32_t cur_pred_bits = 0; - int prev_endpoint_pred_sym = 0; - int endpoint_pred_repeat_count = 0; - uint32_t prev_endpoint_index = 0; - const endpoint_vec& endpoints = m_pGlobal_codebook ? m_pGlobal_codebook->m_local_endpoints : m_local_endpoints; - const selector_vec& selectors = m_pGlobal_codebook ? m_pGlobal_codebook->m_local_selectors : m_local_selectors; - if (!endpoints.size() || !selectors.size()) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: global codebooks must be unpacked first\n"); - return false; - } - - const uint32_t SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX = (uint32_t)selectors.size(); - const uint32_t SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX = m_selector_history_buf_size + SELECTOR_HISTORY_BUF_FIRST_SYMBOL_INDEX; - - for (uint32_t block_y = 0; block_y < num_blocks_y; block_y++) - { - const uint32_t cur_block_endpoint_pred_array = block_y & 1; - - for (uint32_t block_x = 0; block_x < num_blocks_x; block_x++) - { - // Decode endpoint index predictor symbols - if ((block_x & 1) == 0) - { - if ((block_y & 1) == 0) - { - if (endpoint_pred_repeat_count) - { - endpoint_pred_repeat_count--; - cur_pred_bits = prev_endpoint_pred_sym; - } - else - { - cur_pred_bits = sym_codec.decode_huffman(m_endpoint_pred_model); - if (cur_pred_bits == ENDPOINT_PRED_REPEAT_LAST_SYMBOL) - { - endpoint_pred_repeat_count = sym_codec.decode_vlc(ENDPOINT_PRED_COUNT_VLC_BITS) + ENDPOINT_PRED_MIN_REPEAT_COUNT - 1; - - cur_pred_bits = prev_endpoint_pred_sym; - } - else - { - prev_endpoint_pred_sym = cur_pred_bits; - } - } - - pState->m_block_endpoint_preds[cur_block_endpoint_pred_array ^ 1][block_x].m_pred_bits = (uint8_t)(cur_pred_bits >> 4); - } - else - { - cur_pred_bits = pState->m_block_endpoint_preds[cur_block_endpoint_pred_array][block_x].m_pred_bits; - } - } - - // Decode endpoint index - uint32_t endpoint_index, selector_index = 0; - - const uint32_t pred = cur_pred_bits & 3; - cur_pred_bits >>= 2; - - if (pred == 0) - { - // Left - if (!block_x) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: invalid datastream (0)\n"); - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - return false; - } - - endpoint_index = prev_endpoint_index; - } - else if (pred == 1) - { - // Upper - if (!block_y) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: invalid datastream (1)\n"); - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - return false; - } - - endpoint_index = pState->m_block_endpoint_preds[cur_block_endpoint_pred_array ^ 1][block_x].m_endpoint_index; - } - else if (pred == 2) - { - if (is_video) - { - assert(pred == CR_ENDPOINT_PRED_INDEX); - endpoint_index = (*pPrev_frame_indices)[block_x + block_y * num_blocks_x]; - selector_index = endpoint_index >> 16; - endpoint_index &= 0xFFFFU; - } - else - { - // Upper left - if ((!block_x) || (!block_y)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: invalid datastream (2)\n"); - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - return false; - } - - endpoint_index = pState->m_block_endpoint_preds[cur_block_endpoint_pred_array ^ 1][block_x - 1].m_endpoint_index; - } - } - else - { - // Decode and apply delta - const uint32_t delta_sym = sym_codec.decode_huffman(m_delta_endpoint_model); - - endpoint_index = delta_sym + prev_endpoint_index; - if (endpoint_index >= endpoints.size()) - endpoint_index -= (int)endpoints.size(); - } - - pState->m_block_endpoint_preds[cur_block_endpoint_pred_array][block_x].m_endpoint_index = (uint16_t)endpoint_index; - - prev_endpoint_index = endpoint_index; - - // Decode selector index - if ((!is_video) || (pred != CR_ENDPOINT_PRED_INDEX)) - { - int selector_sym; - if (cur_selector_rle_count > 0) - { - cur_selector_rle_count--; - - selector_sym = (int)selectors.size(); - } - else - { - selector_sym = sym_codec.decode_huffman(m_selector_model); - - if (selector_sym == static_cast(SELECTOR_HISTORY_BUF_RLE_SYMBOL_INDEX)) - { - int run_sym = sym_codec.decode_huffman(m_selector_history_buf_rle_model); - - if (run_sym == (SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL - 1)) - cur_selector_rle_count = sym_codec.decode_vlc(7) + SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH; - else - cur_selector_rle_count = run_sym + SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH; - - if (cur_selector_rle_count > total_blocks) - { - // The file is corrupted or we've got a bug. - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: invalid datastream (3)\n"); - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - return false; - } - - selector_sym = (int)selectors.size(); - - cur_selector_rle_count--; - } - } - - if (selector_sym >= (int)selectors.size()) - { - assert(m_selector_history_buf_size > 0); - - int history_buf_index = selector_sym - (int)selectors.size(); - - if (history_buf_index >= (int)selector_history_buf.size()) - { - // The file is corrupted or we've got a bug. - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: invalid datastream (4)\n"); - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - return false; - } - - selector_index = selector_history_buf[history_buf_index]; - - if (history_buf_index != 0) - selector_history_buf.use(history_buf_index); - } - else - { - selector_index = selector_sym; - - if (m_selector_history_buf_size) - selector_history_buf.add(selector_index); - } - } - - if ((endpoint_index >= endpoints.size()) || (selector_index >= selectors.size())) - { - // The file is corrupted or we've got a bug. - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: invalid datastream (5)\n"); - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - return false; - } - - if (is_video) - (*pPrev_frame_indices)[block_x + block_y * num_blocks_x] = endpoint_index | (selector_index << 16); - -#if BASISD_ENABLE_DEBUG_FLAGS - if ((g_debug_flags & cDebugFlagVisCRs) && ((fmt == block_format::cETC1) || (fmt == block_format::cBC1))) - { - if ((is_video) && (pred == 2)) - { - decoder_etc_block* pDst_block = reinterpret_cast(static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes); - memset(pDst_block, 0xFF, 8); - continue; - } - } -#endif - - const endpoint* pEndpoints = &endpoints[endpoint_index]; - const selector* pSelector = &selectors[selector_index]; - - switch (fmt) - { - case block_format::cETC1: - { - decoder_etc_block* pDst_block = reinterpret_cast(static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes); - - block.set_base5_color(decoder_etc_block::pack_color5(pEndpoints->m_color5, false)); - block.set_inten_table(0, pEndpoints->m_inten5); - block.set_inten_table(1, pEndpoints->m_inten5); - - pDst_block->m_uint32[0] = block.m_uint32[0]; - pDst_block->set_raw_selector_bits(pSelector->m_bytes[0], pSelector->m_bytes[1], pSelector->m_bytes[2], pSelector->m_bytes[3]); - - break; - } - case block_format::cBC1: - { -#if BASISD_SUPPORT_DXT1 - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; -#if BASISD_ENABLE_DEBUG_FLAGS - if (g_debug_flags & (cDebugFlagVisBC1Sels | cDebugFlagVisBC1Endpoints)) - convert_etc1s_to_dxt1_vis(static_cast(pDst_block), pEndpoints, pSelector, bc1_allow_threecolor_blocks); - else -#endif - convert_etc1s_to_dxt1(static_cast(pDst_block), pEndpoints, pSelector, bc1_allow_threecolor_blocks); -#else - assert(0); -#endif - break; - } - case block_format::cBC4: - { -#if BASISD_SUPPORT_DXT5A - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_dxt5a(static_cast(pDst_block), pEndpoints, pSelector); -#else - assert(0); -#endif - break; - } - case block_format::cPVRTC1_4_RGB: - { -#if BASISD_SUPPORT_PVRTC1 - block.set_base5_color(decoder_etc_block::pack_color5(pEndpoints->m_color5, false)); - block.set_inten_table(0, pEndpoints->m_inten5); - block.set_inten_table(1, pEndpoints->m_inten5); - block.set_raw_selector_bits(pSelector->m_bytes[0], pSelector->m_bytes[1], pSelector->m_bytes[2], pSelector->m_bytes[3]); - - ((decoder_etc_block*)pPVRTC_work_mem)[block_x + block_y * num_blocks_x] = block; - - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - - // Get block's RGB bounding box - color32 block_colors[2]; - decoder_etc_block::get_block_colors5_bounds(block_colors, base_color, inten_table, low_selector, high_selector); - - assert(block_colors[0][0] <= block_colors[1][0]); - assert(block_colors[0][1] <= block_colors[1][1]); - assert(block_colors[0][2] <= block_colors[1][2]); - - // Set PVRTC1 endpoints to floor/ceil of bounding box's coordinates. - pvrtc4_block temp; - temp.set_opaque_endpoint_floor(0, block_colors[0]); - temp.set_opaque_endpoint_ceil(1, block_colors[1]); - - pPVRTC_endpoints[block_x + block_y * num_blocks_x] = temp.m_endpoints; -#else - assert(0); -#endif - - break; - } - case block_format::cPVRTC1_4_RGBA: - { -#if BASISD_SUPPORT_PVRTC1 - assert(pAlpha_blocks); - - block.set_base5_color(decoder_etc_block::pack_color5(pEndpoints->m_color5, false)); - block.set_inten_table(0, pEndpoints->m_inten5); - block.set_inten_table(1, pEndpoints->m_inten5); - block.set_raw_selector_bits(pSelector->m_selectors[0], pSelector->m_selectors[1], pSelector->m_selectors[2], pSelector->m_selectors[3]); - - ((decoder_etc_block*)pPVRTC_work_mem)[block_x + block_y * num_blocks_x] = block; - - // Get block's RGBA bounding box - const color32& base_color = pEndpoints->m_color5; - const uint32_t inten_table = pEndpoints->m_inten5; - const uint32_t low_selector = pSelector->m_lo_selector; - const uint32_t high_selector = pSelector->m_hi_selector; - color32 block_colors[2]; - decoder_etc_block::get_block_colors5_bounds(block_colors, base_color, inten_table, low_selector, high_selector); - - assert(block_colors[0][0] <= block_colors[1][0]); - assert(block_colors[0][1] <= block_colors[1][1]); - assert(block_colors[0][2] <= block_colors[1][2]); - - const uint16_t* pAlpha_block = reinterpret_cast(static_cast(pAlpha_blocks) + (block_x + block_y * num_blocks_x) * sizeof(uint32_t)); - - const endpoint* pAlpha_endpoints = &endpoints[pAlpha_block[0]]; - const selector* pAlpha_selector = &selectors[pAlpha_block[1]]; - - const color32& alpha_base_color = pAlpha_endpoints->m_color5; - const uint32_t alpha_inten_table = pAlpha_endpoints->m_inten5; - const uint32_t alpha_low_selector = pAlpha_selector->m_lo_selector; - const uint32_t alpha_high_selector = pAlpha_selector->m_hi_selector; - uint32_t alpha_block_colors[2]; - decoder_etc_block::get_block_colors5_bounds_g(alpha_block_colors, alpha_base_color, alpha_inten_table, alpha_low_selector, alpha_high_selector); - assert(alpha_block_colors[0] <= alpha_block_colors[1]); - block_colors[0].a = (uint8_t)alpha_block_colors[0]; - block_colors[1].a = (uint8_t)alpha_block_colors[1]; - - // Set PVRTC1 endpoints to floor/ceil of bounding box's coordinates. - pvrtc4_block temp; - temp.set_endpoint_floor(0, block_colors[0]); - temp.set_endpoint_ceil(1, block_colors[1]); - - pPVRTC_endpoints[block_x + block_y * num_blocks_x] = temp.m_endpoints; -#else - assert(0); -#endif - - break; - } - case block_format::cBC7: // for more consistency with UASTC - case block_format::cBC7_M5_COLOR: - { -#if BASISD_SUPPORT_BC7_MODE5 - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_bc7_m5_color(pDst_block, pEndpoints, pSelector); -#else - assert(0); -#endif - break; - } - case block_format::cBC7_M5_ALPHA: - { -#if BASISD_SUPPORT_BC7_MODE5 - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_bc7_m5_alpha(pDst_block, pEndpoints, pSelector); -#else - assert(0); -#endif - break; - } - case block_format::cETC2_EAC_A8: - { -#if BASISD_SUPPORT_ETC2_EAC_A8 - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_etc2_eac_a8(static_cast(pDst_block), pEndpoints, pSelector); -#else - assert(0); -#endif - break; - } - case block_format::cASTC_4x4: - { -#if BASISD_SUPPORT_ASTC - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_astc_4x4(pDst_block, pEndpoints, pSelector, transcode_alpha, &endpoints[0], &selectors[0]); -#else - assert(0); -#endif - break; - } - case block_format::cATC_RGB: - { -#if BASISD_SUPPORT_ATC - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_atc(pDst_block, pEndpoints, pSelector); -#else - assert(0); -#endif - break; - } - case block_format::cFXT1_RGB: - { -#if BASISD_SUPPORT_FXT1 - const uint32_t fxt1_block_x = block_x >> 1; - const uint32_t fxt1_block_y = block_y; - const uint32_t fxt1_subblock = block_x & 1; - - void* pDst_block = static_cast(pDst_blocks) + (fxt1_block_x + fxt1_block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - - convert_etc1s_to_fxt1(pDst_block, pEndpoints, pSelector, fxt1_subblock); -#else - assert(0); -#endif - break; - } - case block_format::cPVRTC2_4_RGB: - { -#if BASISD_SUPPORT_PVRTC2 - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_pvrtc2_rgb(pDst_block, pEndpoints, pSelector); -#endif - break; - } - case block_format::cPVRTC2_4_RGBA: - { -#if BASISD_SUPPORT_PVRTC2 - assert(transcode_alpha); - - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - - convert_etc1s_to_pvrtc2_rgba(pDst_block, pEndpoints, pSelector, &endpoints[0], &selectors[0]); -#endif - break; - } - case block_format::cIndices: - { - uint16_t* pDst_block = reinterpret_cast(static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes); - pDst_block[0] = static_cast(endpoint_index); - pDst_block[1] = static_cast(selector_index); - break; - } - case block_format::cA32: - { - assert(sizeof(uint32_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint32_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - int colors[4]; - decoder_etc_block::get_block_colors5_g(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - if (max_x == 4) - { - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - pDst_pixels[3] = static_cast(colors[s & 3]); - pDst_pixels[3+4] = static_cast(colors[(s >> 2) & 3]); - pDst_pixels[3+8] = static_cast(colors[(s >> 4) & 3]); - pDst_pixels[3+12] = static_cast(colors[(s >> 6) & 3]); - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint32_t); - } - } - else - { - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - pDst_pixels[3 + 4 * x] = static_cast(colors[(s >> (x * 2)) & 3]); - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint32_t); - } - } - - break; - } - case block_format::cRGB32: - { - assert(sizeof(uint32_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint32_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - color32 colors[4]; - decoder_etc_block::get_block_colors5(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - { - const color32& c = colors[(s >> (x * 2)) & 3]; - - pDst_pixels[0 + 4 * x] = c.r; - pDst_pixels[1 + 4 * x] = c.g; - pDst_pixels[2 + 4 * x] = c.b; - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint32_t); - } - - break; - } - case block_format::cRGBA32: - { - assert(sizeof(uint32_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint32_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - color32 colors[4]; - decoder_etc_block::get_block_colors5(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - { - const color32& c = colors[(s >> (x * 2)) & 3]; - - pDst_pixels[0 + 4 * x] = c.r; - pDst_pixels[1 + 4 * x] = c.g; - pDst_pixels[2 + 4 * x] = c.b; - pDst_pixels[3 + 4 * x] = 255; - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint32_t); - } - - break; - } - case block_format::cRGB565: - case block_format::cBGR565: - { - assert(sizeof(uint16_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint16_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - color32 colors[4]; - decoder_etc_block::get_block_colors5(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - uint16_t packed_colors[4]; - if (fmt == block_format::cRGB565) - { - for (uint32_t i = 0; i < 4; i++) - { - packed_colors[i] = static_cast((mul_8(colors[i].r, 31) << 11) | (mul_8(colors[i].g, 63) << 5) | mul_8(colors[i].b, 31)); - if (BASISD_IS_BIG_ENDIAN) - packed_colors[i] = byteswap_uint16(packed_colors[i]); - } - } - else - { - for (uint32_t i = 0; i < 4; i++) - { - packed_colors[i] = static_cast((mul_8(colors[i].b, 31) << 11) | (mul_8(colors[i].g, 63) << 5) | mul_8(colors[i].r, 31)); - if (BASISD_IS_BIG_ENDIAN) - packed_colors[i] = byteswap_uint16(packed_colors[i]); - } - } - - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - reinterpret_cast(pDst_pixels)[x] = packed_colors[(s >> (x * 2)) & 3]; - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint16_t); - } - - break; - } - case block_format::cRGBA4444_COLOR: - { - assert(sizeof(uint16_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint16_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - color32 colors[4]; - decoder_etc_block::get_block_colors5(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - uint16_t packed_colors[4]; - for (uint32_t i = 0; i < 4; i++) - { - packed_colors[i] = static_cast((mul_8(colors[i].r, 15) << 12) | (mul_8(colors[i].g, 15) << 8) | (mul_8(colors[i].b, 15) << 4)); - } - - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - { - uint16_t cur = reinterpret_cast(pDst_pixels)[x]; - if (BASISD_IS_BIG_ENDIAN) - cur = byteswap_uint16(cur); - - cur = (cur & 0xF) | packed_colors[(s >> (x * 2)) & 3]; - - if (BASISD_IS_BIG_ENDIAN) - cur = byteswap_uint16(cur); - - reinterpret_cast(pDst_pixels)[x] = cur; - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint16_t); - } - - break; - } - case block_format::cRGBA4444_COLOR_OPAQUE: - { - assert(sizeof(uint16_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint16_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - color32 colors[4]; - decoder_etc_block::get_block_colors5(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - uint16_t packed_colors[4]; - for (uint32_t i = 0; i < 4; i++) - { - packed_colors[i] = static_cast((mul_8(colors[i].r, 15) << 12) | (mul_8(colors[i].g, 15) << 8) | (mul_8(colors[i].b, 15) << 4) | 0xF); - if (BASISD_IS_BIG_ENDIAN) - packed_colors[i] = byteswap_uint16(packed_colors[i]); - } - - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - reinterpret_cast(pDst_pixels)[x] = packed_colors[(s >> (x * 2)) & 3]; - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint16_t); - } - - break; - } - case block_format::cRGBA4444_ALPHA: - { - assert(sizeof(uint16_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint16_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - color32 colors[4]; - decoder_etc_block::get_block_colors5(colors, pEndpoints->m_color5, pEndpoints->m_inten5); - - uint16_t packed_colors[4]; - for (uint32_t i = 0; i < 4; i++) - { - packed_colors[i] = mul_8(colors[i].g, 15); - if (BASISD_IS_BIG_ENDIAN) - packed_colors[i] = byteswap_uint16(packed_colors[i]); - } - - for (uint32_t y = 0; y < max_y; y++) - { - const uint32_t s = pSelector->m_selectors[y]; - - for (uint32_t x = 0; x < max_x; x++) - { - reinterpret_cast(pDst_pixels)[x] = packed_colors[(s >> (x * 2)) & 3]; - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint16_t); - } - - break; - } - case block_format::cETC2_EAC_R11: - { -#if BASISD_SUPPORT_ETC2_EAC_RG11 - void* pDst_block = static_cast(pDst_blocks) + (block_x + block_y * output_row_pitch_in_blocks_or_pixels) * output_block_or_pixel_stride_in_bytes; - convert_etc1s_to_etc2_eac_r11(static_cast(pDst_block), pEndpoints, pSelector); -#else - assert(0); -#endif - break; - } - default: - { - assert(0); - break; - } - } - - } // block_x - - } // block-y - - if (endpoint_pred_repeat_count != 0) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_slice: endpoint_pred_repeat_count != 0. The file is corrupted or this is a bug\n"); - return false; - } - - //assert(endpoint_pred_repeat_count == 0); - -#if BASISD_SUPPORT_PVRTC1 - // PVRTC post process - create per-pixel modulation values. - if (fmt == block_format::cPVRTC1_4_RGB) - fixup_pvrtc1_4_modulation_rgb((decoder_etc_block*)pPVRTC_work_mem, pPVRTC_endpoints, pDst_blocks, num_blocks_x, num_blocks_y); - else if (fmt == block_format::cPVRTC1_4_RGBA) - fixup_pvrtc1_4_modulation_rgba((decoder_etc_block*)pPVRTC_work_mem, pPVRTC_endpoints, pDst_blocks, num_blocks_x, num_blocks_y, pAlpha_blocks, &endpoints[0], &selectors[0]); -#endif // BASISD_SUPPORT_PVRTC1 - - if (pPVRTC_work_mem) - free(pPVRTC_work_mem); - - return true; - } - - bool basis_validate_output_buffer_size(transcoder_texture_format target_format, - uint32_t output_blocks_buf_size_in_blocks_or_pixels, - uint32_t orig_width, uint32_t orig_height, - uint32_t output_row_pitch_in_blocks_or_pixels, - uint32_t output_rows_in_pixels, - uint32_t total_slice_blocks) - { - if (basis_transcoder_format_is_uncompressed(target_format)) - { - // Assume the output buffer is orig_width by orig_height - if (!output_row_pitch_in_blocks_or_pixels) - output_row_pitch_in_blocks_or_pixels = orig_width; - - if (!output_rows_in_pixels) - output_rows_in_pixels = orig_height; - - // Now make sure the output buffer is large enough, or we'll overwrite memory. - if (output_blocks_buf_size_in_blocks_or_pixels < (output_rows_in_pixels * output_row_pitch_in_blocks_or_pixels)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: output_blocks_buf_size_in_blocks_or_pixels < (output_rows_in_pixels * output_row_pitch_in_blocks_or_pixels)\n"); - return false; - } - } - else if (target_format == transcoder_texture_format::cTFFXT1_RGB) - { - const uint32_t num_blocks_fxt1_x = (orig_width + 7) / 8; - const uint32_t num_blocks_fxt1_y = (orig_height + 3) / 4; - const uint32_t total_blocks_fxt1 = num_blocks_fxt1_x * num_blocks_fxt1_y; - - if (output_blocks_buf_size_in_blocks_or_pixels < total_blocks_fxt1) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: output_blocks_buf_size_in_blocks_or_pixels < total_blocks_fxt1\n"); - return false; - } - } - else - { - if (output_blocks_buf_size_in_blocks_or_pixels < total_slice_blocks) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: output_blocks_buf_size_in_blocks_or_pixels < transcode_image\n"); - return false; - } - } - return true; - } - - bool basisu_lowlevel_etc1s_transcoder::transcode_image( - transcoder_texture_format target_format, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - const uint8_t* pCompressed_data, uint32_t compressed_data_length, - uint32_t num_blocks_x, uint32_t num_blocks_y, uint32_t orig_width, uint32_t orig_height, uint32_t level_index, - uint32_t rgb_offset, uint32_t rgb_length, uint32_t alpha_offset, uint32_t alpha_length, - uint32_t decode_flags, - bool basis_file_has_alpha_slices, - bool is_video, - uint32_t output_row_pitch_in_blocks_or_pixels, - basisu_transcoder_state* pState, - uint32_t output_rows_in_pixels) - { - if (((uint64_t)rgb_offset + rgb_length) > (uint64_t)compressed_data_length) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: source data buffer too small (color)\n"); - return false; - } - - if (alpha_length) - { - if (((uint64_t)alpha_offset + alpha_length) > (uint64_t)compressed_data_length) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: source data buffer too small (alpha)\n"); - return false; - } - } - else - { - assert(!basis_file_has_alpha_slices); - } - - if ((target_format == transcoder_texture_format::cTFPVRTC1_4_RGB) || (target_format == transcoder_texture_format::cTFPVRTC1_4_RGBA)) - { - if ((!basisu::is_pow2(num_blocks_x * 4)) || (!basisu::is_pow2(num_blocks_y * 4))) - { - // PVRTC1 only supports power of 2 dimensions - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: PVRTC1 only supports power of 2 dimensions\n"); - return false; - } - } - - if ((target_format == transcoder_texture_format::cTFPVRTC1_4_RGBA) && (!basis_file_has_alpha_slices)) - { - // Switch to PVRTC1 RGB if the input doesn't have alpha. - target_format = transcoder_texture_format::cTFPVRTC1_4_RGB; - } - - const bool transcode_alpha_data_to_opaque_formats = (decode_flags & cDecodeFlagsTranscodeAlphaDataToOpaqueFormats) != 0; - const uint32_t bytes_per_block_or_pixel = basis_get_bytes_per_block_or_pixel(target_format); - const uint32_t total_slice_blocks = num_blocks_x * num_blocks_y; - - if (!basis_validate_output_buffer_size(target_format, output_blocks_buf_size_in_blocks_or_pixels, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, output_rows_in_pixels, total_slice_blocks)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: output buffer size too small\n"); - return false; - } - - bool status = false; - - const uint8_t* pData = pCompressed_data + rgb_offset; - uint32_t data_len = rgb_length; - bool is_alpha_slice = false; - - // If the caller wants us to transcode the mip level's alpha data, then use the next slice. - if ((basis_file_has_alpha_slices) && (transcode_alpha_data_to_opaque_formats)) - { - pData = pCompressed_data + alpha_offset; - data_len = alpha_length; - is_alpha_slice = true; - } - - switch (target_format) - { - case transcoder_texture_format::cTFETC1_RGB: - { - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC1, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cETC1, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ETC1 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBC1_RGB: - { -#if !BASISD_SUPPORT_DXT1 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: BC1/DXT1 unsupported\n"); - return false; -#else - // status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC1, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cBC1, bytes_per_block_or_pixel, true, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC1 failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFBC4_R: - { -#if !BASISD_SUPPORT_DXT5A - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: BC4/DXT5A unsupported\n"); - return false; -#else - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC4, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cBC4, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC4 failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFPVRTC1_4_RGB: - { -#if !BASISD_SUPPORT_PVRTC1 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: PVRTC1 4 unsupported\n"); - return false; -#else - // output_row_pitch_in_blocks_or_pixels is actually ignored because we're transcoding to PVRTC1. (Print a dev warning if it's != 0?) - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC1_4_RGB, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cPVRTC1_4_RGB, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to PVRTC1 4 RGB failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFPVRTC1_4_RGBA: - { -#if !BASISD_SUPPORT_PVRTC1 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: PVRTC1 4 unsupported\n"); - return false; -#else - assert(basis_file_has_alpha_slices); - assert(alpha_length); - - // Temp buffer to hold alpha block endpoint/selector indices - basisu::vector temp_block_indices(total_slice_blocks); - - // First transcode alpha data to temp buffer - //status = transcode_slice(pData, data_size, slice_index + 1, &temp_block_indices[0], total_slice_blocks, block_format::cIndices, sizeof(uint32_t), decode_flags, pSlice_descs[slice_index].m_num_blocks_x, pState); - status = transcode_slice(&temp_block_indices[0], num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cIndices, sizeof(uint32_t), false, is_video, true, level_index, orig_width, orig_height, num_blocks_x, pState, false, nullptr, 0); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to PVRTC1 4 RGBA failed (0)\n"); - } - else - { - // output_row_pitch_in_blocks_or_pixels is actually ignored because we're transcoding to PVRTC1. (Print a dev warning if it's != 0?) - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC1_4_RGBA, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState, &temp_block_indices[0]); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cPVRTC1_4_RGBA, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, &temp_block_indices[0], 0); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to PVRTC1 4 RGBA failed (1)\n"); - } - } - - break; -#endif - } - case transcoder_texture_format::cTFBC7_RGBA: - case transcoder_texture_format::cTFBC7_ALT: - { -#if !BASISD_SUPPORT_BC7_MODE5 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: BC7 unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - // We used to support transcoding just alpha to BC7 - but is that useful at all? - - // First transcode the color slice. The cBC7_M5_COLOR transcoder will output opaque mode 5 blocks. - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC7_M5_COLOR, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cBC7_M5_COLOR, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - - if ((status) && (basis_file_has_alpha_slices)) - { - // Now transcode the alpha slice. The cBC7_M5_ALPHA transcoder will now change the opaque mode 5 blocks to blocks with alpha. - //status = transcode_slice(pData, data_size, slice_index + 1, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC7_M5_ALPHA, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cBC7_M5_ALPHA, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - } - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC7 failed (0)\n"); - } - - break; -#endif - } - case transcoder_texture_format::cTFETC2_RGBA: - { -#if !BASISD_SUPPORT_ETC2_EAC_A8 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: ETC2 EAC A8 unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - - if (basis_file_has_alpha_slices) - { - // First decode the alpha data - //status = transcode_slice(pData, data_size, slice_index + 1, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_A8, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cETC2_EAC_A8, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - } - else - { - //write_opaque_alpha_blocks(pSlice_descs[slice_index].m_num_blocks_x, pSlice_descs[slice_index].m_num_blocks_y, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_A8, 16, output_row_pitch_in_blocks_or_pixels); - basisu_transcoder::write_opaque_alpha_blocks(num_blocks_x, num_blocks_y, pOutput_blocks, block_format::cETC2_EAC_A8, 16, output_row_pitch_in_blocks_or_pixels); - status = true; - } - - if (status) - { - // Now decode the color data - //status = transcode_slice(pData, data_size, slice_index, (uint8_t*)pOutput_blocks + 8, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC1, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice((uint8_t *)pOutput_blocks + 8, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cETC1, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ETC2 RGB failed\n"); - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ETC2 A failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFBC3_RGBA: - { -#if !BASISD_SUPPORT_DXT1 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: DXT1 unsupported\n"); - return false; -#elif !BASISD_SUPPORT_DXT5A - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: DXT5A unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - - // First decode the alpha data - if (basis_file_has_alpha_slices) - { - //status = transcode_slice(pData, data_size, slice_index + 1, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC4, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cBC4, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - } - else - { - basisu_transcoder::write_opaque_alpha_blocks(num_blocks_x, num_blocks_y, pOutput_blocks, block_format::cBC4, 16, output_row_pitch_in_blocks_or_pixels); - status = true; - } - - if (status) - { - // Now decode the color data. Forbid 3 color blocks, which aren't allowed in BC3. - //status = transcode_slice(pData, data_size, slice_index, (uint8_t*)pOutput_blocks + 8, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC1, 16, decode_flags | cDecodeFlagsBC1ForbidThreeColorBlocks, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice((uint8_t *)pOutput_blocks + 8, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cBC1, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC3 RGB failed\n"); - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC3 A failed\n"); - } - - break; -#endif - } - case transcoder_texture_format::cTFBC5_RG: - { -#if !BASISD_SUPPORT_DXT5A - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: DXT5A unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - - //bool transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - // uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, const bool is_video, const bool is_alpha_slice, const uint32_t level_index, const uint32_t orig_width, const uint32_t orig_height, uint32_t output_row_pitch_in_blocks_or_pixels = 0, - // basisu_transcoder_state* pState = nullptr, bool astc_transcode_alpha = false, void* pAlpha_blocks = nullptr, uint32_t output_rows_in_pixels = 0); - - // Decode the R data (actually the green channel of the color data slice in the basis file) - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC4, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cBC4, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (status) - { - if (basis_file_has_alpha_slices) - { - // Decode the G data (actually the green channel of the alpha data slice in the basis file) - //status = transcode_slice(pData, data_size, slice_index + 1, (uint8_t*)pOutput_blocks + 8, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC4, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice((uint8_t *)pOutput_blocks + 8, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cBC4, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC5 1 failed\n"); - } - } - else - { - basisu_transcoder::write_opaque_alpha_blocks(num_blocks_x, num_blocks_y, (uint8_t*)pOutput_blocks + 8, block_format::cBC4, 16, output_row_pitch_in_blocks_or_pixels); - status = true; - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to BC5 channel 0 failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFASTC_4x4_RGBA: - { -#if !BASISD_SUPPORT_ASTC - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: ASTC unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - - if (basis_file_has_alpha_slices) - { - // First decode the alpha data to the output (we're using the output texture as a temp buffer here). - //status = transcode_slice(pData, data_size, slice_index + 1, (uint8_t*)pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cIndices, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cIndices, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (status) - { - // Now decode the color data and transcode to ASTC. The transcoder function will read the alpha selector data from the output texture as it converts and - // transcode both the alpha and color data at the same time to ASTC. - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cASTC_4x4, 16, decode_flags | cDecodeFlagsOutputHasAlphaIndices, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cASTC_4x4, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, true, nullptr, output_rows_in_pixels); - } - } - else - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cASTC_4x4, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cASTC_4x4, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ASTC failed (0)\n"); - } - - break; -#endif - } - case transcoder_texture_format::cTFATC_RGB: - { -#if !BASISD_SUPPORT_ATC - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: ATC unsupported\n"); - return false; -#else - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cATC_RGB, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cATC_RGB, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ATC_RGB failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFATC_RGBA: - { -#if !BASISD_SUPPORT_ATC - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: ATC unsupported\n"); - return false; -#elif !BASISD_SUPPORT_DXT5A - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: DXT5A unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - - // First decode the alpha data - if (basis_file_has_alpha_slices) - { - //status = transcode_slice(pData, data_size, slice_index + 1, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC4, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cBC4, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - } - else - { - basisu_transcoder::write_opaque_alpha_blocks(num_blocks_x, num_blocks_y, pOutput_blocks, block_format::cBC4, 16, output_row_pitch_in_blocks_or_pixels); - status = true; - } - - if (status) - { - //status = transcode_slice(pData, data_size, slice_index, (uint8_t*)pOutput_blocks + 8, output_blocks_buf_size_in_blocks_or_pixels, block_format::cATC_RGB, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice((uint8_t *)pOutput_blocks + 8, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cATC_RGB, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ATC RGB failed\n"); - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ATC A failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFPVRTC2_4_RGB: - { -#if !BASISD_SUPPORT_PVRTC2 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: PVRTC2 unsupported\n"); - return false; -#else - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC2_4_RGB, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cPVRTC2_4_RGB, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to cPVRTC2_4_RGB failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFPVRTC2_4_RGBA: - { -#if !BASISD_SUPPORT_PVRTC2 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: PVRTC2 unsupported\n"); - return false; -#else - if (basis_file_has_alpha_slices) - { - // First decode the alpha data to the output (we're using the output texture as a temp buffer here). - //status = transcode_slice(pData, data_size, slice_index + 1, (uint8_t*)pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cIndices, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cIndices, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to failed\n"); - } - else - { - // Now decode the color data and transcode to PVRTC2 RGBA. - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC2_4_RGBA, bytes_per_block_or_pixel, decode_flags | cDecodeFlagsOutputHasAlphaIndices, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cPVRTC2_4_RGBA, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, true, nullptr, output_rows_in_pixels); - } - } - else - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC2_4_RGB, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cPVRTC2_4_RGB, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to cPVRTC2_4_RGBA failed\n"); - } - - break; -#endif - } - case transcoder_texture_format::cTFRGBA32: - { - // Raw 32bpp pixels, decoded in the usual raster order (NOT block order) into an image in memory. - - // First decode the alpha data - if (basis_file_has_alpha_slices) - //status = transcode_slice(pData, data_size, slice_index + 1, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cA32, sizeof(uint32_t), decode_flags, output_row_pitch_in_blocks_or_pixels, pState, nullptr, output_rows_in_pixels); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cA32, sizeof(uint32_t), false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - else - status = true; - - if (status) - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, basis_file_has_alpha_slices ? block_format::cRGB32 : block_format::cRGBA32, sizeof(uint32_t), decode_flags, output_row_pitch_in_blocks_or_pixels, pState, nullptr, output_rows_in_pixels); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, basis_file_has_alpha_slices ? block_format::cRGB32 : block_format::cRGBA32, sizeof(uint32_t), false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to RGBA32 RGB failed\n"); - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to RGBA32 A failed\n"); - } - - break; - } - case transcoder_texture_format::cTFRGB565: - case transcoder_texture_format::cTFBGR565: - { - // Raw 16bpp pixels, decoded in the usual raster order (NOT block order) into an image in memory. - - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, (fmt == transcoder_texture_format::cTFRGB565) ? block_format::cRGB565 : block_format::cBGR565, sizeof(uint16_t), decode_flags, output_row_pitch_in_blocks_or_pixels, pState, nullptr, output_rows_in_pixels); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, (target_format == transcoder_texture_format::cTFRGB565) ? block_format::cRGB565 : block_format::cBGR565, sizeof(uint16_t), false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to RGB565 RGB failed\n"); - } - - break; - } - case transcoder_texture_format::cTFRGBA4444: - { - // Raw 16bpp pixels, decoded in the usual raster order (NOT block order) into an image in memory. - - // First decode the alpha data - if (basis_file_has_alpha_slices) - //status = transcode_slice(pData, data_size, slice_index + 1, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cRGBA4444_ALPHA, sizeof(uint16_t), decode_flags, output_row_pitch_in_blocks_or_pixels, pState, nullptr, output_rows_in_pixels); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cRGBA4444_ALPHA, sizeof(uint16_t), false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - else - status = true; - - if (status) - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, basis_file_has_alpha_slices ? block_format::cRGBA4444_COLOR : block_format::cRGBA4444_COLOR_OPAQUE, sizeof(uint16_t), decode_flags, output_row_pitch_in_blocks_or_pixels, pState, nullptr, output_rows_in_pixels); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, basis_file_has_alpha_slices ? block_format::cRGBA4444_COLOR : block_format::cRGBA4444_COLOR_OPAQUE, sizeof(uint16_t), false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to RGBA4444 RGB failed\n"); - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to RGBA4444 A failed\n"); - } - - break; - } - case transcoder_texture_format::cTFFXT1_RGB: - { -#if !BASISD_SUPPORT_FXT1 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: FXT1 unsupported\n"); - return false; -#else - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cFXT1_RGB, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cFXT1_RGB, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to FXT1_RGB failed\n"); - } - break; -#endif - } - case transcoder_texture_format::cTFETC2_EAC_R11: - { -#if !BASISD_SUPPORT_ETC2_EAC_RG11 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: EAC_RG11 unsupported\n"); - return false; -#else - //status = transcode_slice(pData, data_size, slice_index_to_decode, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_R11, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pData, data_len, block_format::cETC2_EAC_R11, bytes_per_block_or_pixel, false, is_video, is_alpha_slice, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ETC2_EAC_R11 failed\n"); - } - - break; -#endif - } - case transcoder_texture_format::cTFETC2_EAC_RG11: - { -#if !BASISD_SUPPORT_ETC2_EAC_RG11 - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: EAC_RG11 unsupported\n"); - return false; -#else - assert(bytes_per_block_or_pixel == 16); - - if (basis_file_has_alpha_slices) - { - // First decode the alpha data to G - //status = transcode_slice(pData, data_size, slice_index + 1, (uint8_t*)pOutput_blocks + 8, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_R11, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice((uint8_t *)pOutput_blocks + 8, num_blocks_x, num_blocks_y, pCompressed_data + alpha_offset, alpha_length, block_format::cETC2_EAC_R11, bytes_per_block_or_pixel, false, is_video, true, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - } - else - { - basisu_transcoder::write_opaque_alpha_blocks(num_blocks_x, num_blocks_y, (uint8_t*)pOutput_blocks + 8, block_format::cETC2_EAC_R11, 16, output_row_pitch_in_blocks_or_pixels); - status = true; - } - - if (status) - { - // Now decode the color data to R - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_R11, 16, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + rgb_offset, rgb_length, block_format::cETC2_EAC_R11, bytes_per_block_or_pixel, false, is_video, false, level_index, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, false, nullptr, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ETC2_EAC_R11 R failed\n"); - } - } - else - { - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: transcode_slice() to ETC2_EAC_R11 G failed\n"); - } - - break; -#endif - } - default: - { - assert(0); - BASISU_DEVEL_ERROR("basisu_lowlevel_etc1s_transcoder::transcode_image: Invalid fmt\n"); - break; - } - } - - return status; - } - - basisu_lowlevel_uastc_transcoder::basisu_lowlevel_uastc_transcoder() - { - } - - bool basisu_lowlevel_uastc_transcoder::transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, bool has_alpha, const uint32_t orig_width, const uint32_t orig_height, uint32_t output_row_pitch_in_blocks_or_pixels, - basisu_transcoder_state* pState, uint32_t output_rows_in_pixels, int channel0, int channel1, uint32_t decode_flags) - { - BASISU_NOTE_UNUSED(pState); - BASISU_NOTE_UNUSED(bc1_allow_threecolor_blocks); - - assert(g_transcoder_initialized); - if (!g_transcoder_initialized) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_slice: Transcoder not globally initialized.\n"); - return false; - } - -#if BASISD_SUPPORT_UASTC - const uint32_t total_blocks = num_blocks_x * num_blocks_y; - - if (!output_row_pitch_in_blocks_or_pixels) - { - if (basis_block_format_is_uncompressed(fmt)) - output_row_pitch_in_blocks_or_pixels = orig_width; - else - { - if (fmt == block_format::cFXT1_RGB) - output_row_pitch_in_blocks_or_pixels = (orig_width + 7) / 8; - else - output_row_pitch_in_blocks_or_pixels = num_blocks_x; - } - } - - if (basis_block_format_is_uncompressed(fmt)) - { - if (!output_rows_in_pixels) - output_rows_in_pixels = orig_height; - } - - uint32_t total_expected_block_bytes = sizeof(uastc_block) * total_blocks; - if (image_data_size < total_expected_block_bytes) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_slice: image_data_size < total_expected_block_bytes The file is corrupted or this is a bug.\n"); - return false; - } - - const uastc_block* pSource_block = reinterpret_cast(pImage_data); - - const bool high_quality = (decode_flags & cDecodeFlagsHighQuality) != 0; - const bool from_alpha = has_alpha && (decode_flags & cDecodeFlagsTranscodeAlphaDataToOpaqueFormats) != 0; - - bool status = false; - if ((fmt == block_format::cPVRTC1_4_RGB) || (fmt == block_format::cPVRTC1_4_RGBA)) - { - if (fmt == block_format::cPVRTC1_4_RGBA) - transcode_uastc_to_pvrtc1_4_rgba((const uastc_block*)pImage_data, pDst_blocks, num_blocks_x, num_blocks_y, high_quality); - else - transcode_uastc_to_pvrtc1_4_rgb((const uastc_block *)pImage_data, pDst_blocks, num_blocks_x, num_blocks_y, high_quality, from_alpha); - } - else - { - for (uint32_t block_y = 0; block_y < num_blocks_y; ++block_y) - { - void* pDst_block = (uint8_t*)pDst_blocks + block_y * output_row_pitch_in_blocks_or_pixels * output_block_or_pixel_stride_in_bytes; - - for (uint32_t block_x = 0; block_x < num_blocks_x; ++block_x, ++pSource_block, pDst_block = (uint8_t *)pDst_block + output_block_or_pixel_stride_in_bytes) - { - switch (fmt) - { - case block_format::cUASTC_4x4: - { - memcpy(pDst_block, pSource_block, sizeof(uastc_block)); - status = true; - break; - } - case block_format::cETC1: - { - if (from_alpha) - status = transcode_uastc_to_etc1(*pSource_block, pDst_block, 3); - else - status = transcode_uastc_to_etc1(*pSource_block, pDst_block); - break; - } - case block_format::cETC2_RGBA: - { - status = transcode_uastc_to_etc2_rgba(*pSource_block, pDst_block); - break; - } - case block_format::cBC1: - { - status = transcode_uastc_to_bc1(*pSource_block, pDst_block, high_quality); - break; - } - case block_format::cBC3: - { - status = transcode_uastc_to_bc3(*pSource_block, pDst_block, high_quality); - break; - } - case block_format::cBC4: - { - if (channel0 < 0) - channel0 = 0; - status = transcode_uastc_to_bc4(*pSource_block, pDst_block, high_quality, channel0); - break; - } - case block_format::cBC5: - { - if (channel0 < 0) - channel0 = 0; - if (channel1 < 0) - channel1 = 3; - status = transcode_uastc_to_bc5(*pSource_block, pDst_block, high_quality, channel0, channel1); - break; - } - case block_format::cBC7: - case block_format::cBC7_M5_COLOR: // for consistently with ETC1S - { - status = transcode_uastc_to_bc7(*pSource_block, pDst_block); - break; - } - case block_format::cASTC_4x4: - { - status = transcode_uastc_to_astc(*pSource_block, pDst_block); - break; - } - case block_format::cETC2_EAC_R11: - { - if (channel0 < 0) - channel0 = 0; - status = transcode_uastc_to_etc2_eac_r11(*pSource_block, pDst_block, high_quality, channel0); - break; - } - case block_format::cETC2_EAC_RG11: - { - if (channel0 < 0) - channel0 = 0; - if (channel1 < 0) - channel1 = 3; - status = transcode_uastc_to_etc2_eac_rg11(*pSource_block, pDst_block, high_quality, channel0, channel1); - break; - } - case block_format::cRGBA32: - { - color32 block_pixels[4][4]; - status = unpack_uastc(*pSource_block, (color32 *)block_pixels, false); - - assert(sizeof(uint32_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint32_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - for (uint32_t y = 0; y < max_y; y++) - { - for (uint32_t x = 0; x < max_x; x++) - { - const color32& c = block_pixels[y][x]; - - pDst_pixels[0 + 4 * x] = c.r; - pDst_pixels[1 + 4 * x] = c.g; - pDst_pixels[2 + 4 * x] = c.b; - pDst_pixels[3 + 4 * x] = c.a; - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint32_t); - } - - break; - } - case block_format::cRGB565: - case block_format::cBGR565: - { - color32 block_pixels[4][4]; - status = unpack_uastc(*pSource_block, (color32*)block_pixels, false); - - assert(sizeof(uint16_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint16_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - for (uint32_t y = 0; y < max_y; y++) - { - for (uint32_t x = 0; x < max_x; x++) - { - const color32& c = block_pixels[y][x]; - - const uint16_t packed = (fmt == block_format::cRGB565) ? static_cast((mul_8(c.r, 31) << 11) | (mul_8(c.g, 63) << 5) | mul_8(c.b, 31)) : - static_cast((mul_8(c.b, 31) << 11) | (mul_8(c.g, 63) << 5) | mul_8(c.r, 31)); - - pDst_pixels[x * 2 + 0] = (uint8_t)(packed & 0xFF); - pDst_pixels[x * 2 + 1] = (uint8_t)((packed >> 8) & 0xFF); - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint16_t); - } - - break; - } - case block_format::cRGBA4444: - { - color32 block_pixels[4][4]; - status = unpack_uastc(*pSource_block, (color32*)block_pixels, false); - - assert(sizeof(uint16_t) == output_block_or_pixel_stride_in_bytes); - uint8_t* pDst_pixels = static_cast(pDst_blocks) + (block_x * 4 + block_y * 4 * output_row_pitch_in_blocks_or_pixels) * sizeof(uint16_t); - - const uint32_t max_x = basisu::minimum(4, (int)output_row_pitch_in_blocks_or_pixels - (int)block_x * 4); - const uint32_t max_y = basisu::minimum(4, (int)output_rows_in_pixels - (int)block_y * 4); - - for (uint32_t y = 0; y < max_y; y++) - { - for (uint32_t x = 0; x < max_x; x++) - { - const color32& c = block_pixels[y][x]; - - const uint16_t packed = static_cast((mul_8(c.r, 15) << 12) | (mul_8(c.g, 15) << 8) | (mul_8(c.b, 15) << 4) | mul_8(c.a, 15)); - - pDst_pixels[x * 2 + 0] = (uint8_t)(packed & 0xFF); - pDst_pixels[x * 2 + 1] = (uint8_t)((packed >> 8) & 0xFF); - } - - pDst_pixels += output_row_pitch_in_blocks_or_pixels * sizeof(uint16_t); - } - break; - } - default: - assert(0); - break; - - } - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_slice: Transcoder failed to unpack a UASTC block - this is a bug, or the data was corrupted\n"); - return false; - } - - } // block_x - - } // block_y - } - - return true; -#else - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_slice: UASTC is unsupported\n"); - - BASISU_NOTE_UNUSED(decode_flags); - BASISU_NOTE_UNUSED(channel0); - BASISU_NOTE_UNUSED(channel1); - BASISU_NOTE_UNUSED(output_rows_in_pixels); - BASISU_NOTE_UNUSED(output_row_pitch_in_blocks_or_pixels); - BASISU_NOTE_UNUSED(output_block_or_pixel_stride_in_bytes); - BASISU_NOTE_UNUSED(fmt); - BASISU_NOTE_UNUSED(image_data_size); - BASISU_NOTE_UNUSED(pImage_data); - BASISU_NOTE_UNUSED(num_blocks_x); - BASISU_NOTE_UNUSED(num_blocks_y); - BASISU_NOTE_UNUSED(pDst_blocks); - - return false; -#endif - } - - bool basisu_lowlevel_uastc_transcoder::transcode_image( - transcoder_texture_format target_format, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - const uint8_t* pCompressed_data, uint32_t compressed_data_length, - uint32_t num_blocks_x, uint32_t num_blocks_y, uint32_t orig_width, uint32_t orig_height, uint32_t level_index, - uint32_t slice_offset, uint32_t slice_length, - uint32_t decode_flags, - bool has_alpha, - bool is_video, - uint32_t output_row_pitch_in_blocks_or_pixels, - basisu_transcoder_state* pState, - uint32_t output_rows_in_pixels, - int channel0, int channel1) - { - BASISU_NOTE_UNUSED(is_video); - BASISU_NOTE_UNUSED(level_index); - - if (((uint64_t)slice_offset + slice_length) > (uint64_t)compressed_data_length) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: source data buffer too small\n"); - return false; - } - - if ((target_format == transcoder_texture_format::cTFPVRTC1_4_RGB) || (target_format == transcoder_texture_format::cTFPVRTC1_4_RGBA)) - { - if ((!basisu::is_pow2(num_blocks_x * 4)) || (!basisu::is_pow2(num_blocks_y * 4))) - { - // PVRTC1 only supports power of 2 dimensions - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: PVRTC1 only supports power of 2 dimensions\n"); - return false; - } - } - - if ((target_format == transcoder_texture_format::cTFPVRTC1_4_RGBA) && (!has_alpha)) - { - // Switch to PVRTC1 RGB if the input doesn't have alpha. - target_format = transcoder_texture_format::cTFPVRTC1_4_RGB; - } - - const bool transcode_alpha_data_to_opaque_formats = (decode_flags & cDecodeFlagsTranscodeAlphaDataToOpaqueFormats) != 0; - const uint32_t bytes_per_block_or_pixel = basis_get_bytes_per_block_or_pixel(target_format); - const uint32_t total_slice_blocks = num_blocks_x * num_blocks_y; - - if (!basis_validate_output_buffer_size(target_format, output_blocks_buf_size_in_blocks_or_pixels, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, output_rows_in_pixels, total_slice_blocks)) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: output buffer size too small\n"); - return false; - } - - bool status = false; - - // UASTC4x4 - switch (target_format) - { - case transcoder_texture_format::cTFETC1_RGB: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC1, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cETC1, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, channel0, channel1); - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to ETC1 failed\n"); - } - break; - } - case transcoder_texture_format::cTFETC2_RGBA: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_RGBA, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cETC2_RGBA, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, channel0, channel1); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to ETC2 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBC1_RGB: - { - // TODO: ETC1S allows BC1 from alpha channel. That doesn't seem actually useful, though. - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC1, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cBC1, - bytes_per_block_or_pixel, true, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, channel0, channel1); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to BC1 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBC3_RGBA: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC3, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cBC3, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, channel0, channel1); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to BC3 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBC4_R: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC4, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState, - // nullptr, 0, - // ((has_alpha) && (transcode_alpha_data_to_opaque_formats)) ? 3 : 0); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cBC4, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, - ((has_alpha) && (transcode_alpha_data_to_opaque_formats)) ? 3 : 0); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to BC4 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBC5_RG: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC5, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState, - // nullptr, 0, - // 0, 3); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cBC5, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, - 0, 3); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to BC5 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBC7_RGBA: - case transcoder_texture_format::cTFBC7_ALT: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBC7, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cBC7, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to BC7 failed\n"); - } - break; - } - case transcoder_texture_format::cTFPVRTC1_4_RGB: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC1_4_RGB, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cPVRTC1_4_RGB, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to PVRTC1 RGB 4bpp failed\n"); - } - break; - } - case transcoder_texture_format::cTFPVRTC1_4_RGBA: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cPVRTC1_4_RGBA, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cPVRTC1_4_RGBA, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to PVRTC1 RGBA 4bpp failed\n"); - } - break; - } - case transcoder_texture_format::cTFASTC_4x4_RGBA: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cASTC_4x4, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cASTC_4x4, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to ASTC 4x4 failed\n"); - } - break; - } - case transcoder_texture_format::cTFATC_RGB: - case transcoder_texture_format::cTFATC_RGBA: - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: UASTC->ATC currently unsupported\n"); - return false; - } - case transcoder_texture_format::cTFFXT1_RGB: - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: UASTC->FXT1 currently unsupported\n"); - return false; - } - case transcoder_texture_format::cTFPVRTC2_4_RGB: - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: UASTC->PVRTC2 currently unsupported\n"); - return false; - } - case transcoder_texture_format::cTFPVRTC2_4_RGBA: - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: UASTC->PVRTC2 currently unsupported\n"); - return false; - } - case transcoder_texture_format::cTFETC2_EAC_R11: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_R11, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState, - // nullptr, 0, - // ((has_alpha) && (transcode_alpha_data_to_opaque_formats)) ? 3 : 0); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cETC2_EAC_R11, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, - ((has_alpha) && (transcode_alpha_data_to_opaque_formats)) ? 3 : 0); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to EAC R11 failed\n"); - } - break; - } - case transcoder_texture_format::cTFETC2_EAC_RG11: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cETC2_EAC_RG11, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState, - // nullptr, 0, - // 0, 3); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cETC2_EAC_RG11, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels, - 0, 3); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_basisu_lowlevel_uastc_transcodertranscoder::transcode_image: transcode_slice() to EAC RG11 failed\n"); - } - break; - } - case transcoder_texture_format::cTFRGBA32: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cRGBA32, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cRGBA32, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to RGBA32 failed\n"); - } - break; - } - case transcoder_texture_format::cTFRGB565: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cRGB565, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cRGB565, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to RGB565 failed\n"); - } - break; - } - case transcoder_texture_format::cTFBGR565: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cBGR565, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cBGR565, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to RGB565 failed\n"); - } - break; - } - case transcoder_texture_format::cTFRGBA4444: - { - //status = transcode_slice(pData, data_size, slice_index, pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, block_format::cRGBA4444, bytes_per_block_or_pixel, decode_flags, output_row_pitch_in_blocks_or_pixels, pState); - status = transcode_slice(pOutput_blocks, num_blocks_x, num_blocks_y, pCompressed_data + slice_offset, slice_length, block_format::cRGBA4444, - bytes_per_block_or_pixel, false, has_alpha, orig_width, orig_height, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - if (!status) - { - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: transcode_slice() to RGBA4444 failed\n"); - } - break; - } - default: - { - assert(0); - BASISU_DEVEL_ERROR("basisu_lowlevel_uastc_transcoder::transcode_image: Invalid format\n"); - break; - } - } - - return status; - } - - basisu_transcoder::basisu_transcoder() : - m_ready_to_transcode(false) - { - } - - bool basisu_transcoder::validate_file_checksums(const void* pData, uint32_t data_size, bool full_validation) const - { - if (!validate_header(pData, data_size)) - return false; - - const basis_file_header* pHeader = reinterpret_cast(pData); - -#if !BASISU_NO_HEADER_OR_DATA_CRC16_CHECKS - if (crc16(&pHeader->m_data_size, sizeof(basis_file_header) - BASISU_OFFSETOF(basis_file_header, m_data_size), 0) != pHeader->m_header_crc16) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: header CRC check failed\n"); - return false; - } - - if (full_validation) - { - if (crc16(reinterpret_cast(pData) + sizeof(basis_file_header), pHeader->m_data_size, 0) != pHeader->m_data_crc16) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: data CRC check failed\n"); - return false; - } - } -#endif - - return true; - } - - bool basisu_transcoder::validate_header_quick(const void* pData, uint32_t data_size) const - { - if (data_size <= sizeof(basis_file_header)) - return false; - - const basis_file_header* pHeader = reinterpret_cast(pData); - - if ((pHeader->m_sig != basis_file_header::cBASISSigValue) || (pHeader->m_ver != BASISD_SUPPORTED_BASIS_VERSION) || (pHeader->m_header_size != sizeof(basis_file_header))) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: header has an invalid signature, or file version is unsupported\n"); - return false; - } - - uint32_t expected_file_size = sizeof(basis_file_header) + pHeader->m_data_size; - if (data_size < expected_file_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: source buffer is too small\n"); - return false; - } - - if ((!pHeader->m_total_slices) || (!pHeader->m_total_images)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::validate_header_quick: header is invalid\n"); - return false; - } - - if ((pHeader->m_slice_desc_file_ofs >= data_size) || - ((data_size - pHeader->m_slice_desc_file_ofs) < (sizeof(basis_slice_desc) * pHeader->m_total_slices)) - ) - { - BASISU_DEVEL_ERROR("basisu_transcoder::validate_header_quick: passed in buffer is too small or data is corrupted\n"); - return false; - } - - return true; - } - - bool basisu_transcoder::validate_header(const void* pData, uint32_t data_size) const - { - if (data_size <= sizeof(basis_file_header)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: input source buffer is too small\n"); - return false; - } - - const basis_file_header* pHeader = reinterpret_cast(pData); - - if ((pHeader->m_sig != basis_file_header::cBASISSigValue) || (pHeader->m_ver != BASISD_SUPPORTED_BASIS_VERSION) || (pHeader->m_header_size != sizeof(basis_file_header))) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: header has an invalid signature, or file version is unsupported\n"); - return false; - } - - uint32_t expected_file_size = sizeof(basis_file_header) + pHeader->m_data_size; - if (data_size < expected_file_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: input source buffer is too small, or header is corrupted\n"); - return false; - } - - if ((!pHeader->m_total_images) || (!pHeader->m_total_slices)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: invalid basis file (total images or slices are 0)\n"); - return false; - } - - if (pHeader->m_total_images > pHeader->m_total_slices) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: invalid basis file (too many images)\n"); - return false; - } - - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - { - if (pHeader->m_flags & cBASISHeaderFlagHasAlphaSlices) - { - if (pHeader->m_total_slices & 1) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: invalid alpha .basis file\n"); - return false; - } - } - - // This flag dates back to pre-Basis Universal, when .basis supported full ETC1 too. - if ((pHeader->m_flags & cBASISHeaderFlagETC1S) == 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: Invalid .basis file (ETC1S check)\n"); - return false; - } - } - else - { - if ((pHeader->m_flags & cBASISHeaderFlagETC1S) != 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: Invalid .basis file (ETC1S check)\n"); - return false; - } - } - - if ((pHeader->m_slice_desc_file_ofs >= data_size) || - ((data_size - pHeader->m_slice_desc_file_ofs) < (sizeof(basis_slice_desc) * pHeader->m_total_slices)) - ) - { - BASISU_DEVEL_ERROR("basisu_transcoder::validate_header_quick: passed in buffer is too small or data is corrupted\n"); - return false; - } - - return true; - } - - basis_texture_type basisu_transcoder::get_texture_type(const void* pData, uint32_t data_size) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_texture_type: header validation failed\n"); - return cBASISTexType2DArray; - } - - const basis_file_header* pHeader = static_cast(pData); - - basis_texture_type btt = static_cast(static_cast(pHeader->m_tex_type)); - - if (btt >= cBASISTexTypeTotal) - { - BASISU_DEVEL_ERROR("basisu_transcoder::validate_header_quick: header's texture type field is invalid\n"); - return cBASISTexType2DArray; - } - - return btt; - } - - bool basisu_transcoder::get_userdata(const void* pData, uint32_t data_size, uint32_t& userdata0, uint32_t& userdata1) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_userdata: header validation failed\n"); - return false; - } - - const basis_file_header* pHeader = static_cast(pData); - - userdata0 = pHeader->m_userdata0; - userdata1 = pHeader->m_userdata1; - return true; - } - - uint32_t basisu_transcoder::get_total_images(const void* pData, uint32_t data_size) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: header validation failed\n"); - return 0; - } - - const basis_file_header* pHeader = static_cast(pData); - - return pHeader->m_total_images; - } - - basis_tex_format basisu_transcoder::get_tex_format(const void* pData, uint32_t data_size) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_images: header validation failed\n"); - return basis_tex_format::cETC1S; - } - - const basis_file_header* pHeader = static_cast(pData); - - return (basis_tex_format)(uint32_t)pHeader->m_tex_format; - } - - bool basisu_transcoder::get_image_info(const void* pData, uint32_t data_size, basisu_image_info& image_info, uint32_t image_index) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_info: header validation failed\n"); - return false; - } - - int slice_index = find_first_slice_index(pData, data_size, image_index, 0); - if (slice_index < 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_info: invalid slice index\n"); - return false; - } - - const basis_file_header* pHeader = static_cast(pData); - - if (image_index >= pHeader->m_total_images) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_info: invalid image_index\n"); - return false; - } - - const basis_slice_desc* pSlice_descs = reinterpret_cast(static_cast(pData) + pHeader->m_slice_desc_file_ofs); - - uint32_t total_levels = 1; - for (uint32_t i = slice_index + 1; i < pHeader->m_total_slices; i++) - if (pSlice_descs[i].m_image_index == image_index) - total_levels = basisu::maximum(total_levels, pSlice_descs[i].m_level_index + 1); - else - break; - - if (total_levels > 16) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_info: invalid image_index\n"); - return false; - } - - const basis_slice_desc& slice_desc = pSlice_descs[slice_index]; - - image_info.m_image_index = image_index; - image_info.m_total_levels = total_levels; - - image_info.m_alpha_flag = false; - - // For ETC1S, if anything has alpha all images have alpha. For UASTC, we only report alpha when the image actually has alpha. - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - image_info.m_alpha_flag = (pHeader->m_flags & cBASISHeaderFlagHasAlphaSlices) != 0; - else - image_info.m_alpha_flag = (slice_desc.m_flags & cSliceDescFlagsHasAlpha) != 0; - - image_info.m_iframe_flag = (slice_desc.m_flags & cSliceDescFlagsFrameIsIFrame) != 0; - - image_info.m_width = slice_desc.m_num_blocks_x * 4; - image_info.m_height = slice_desc.m_num_blocks_y * 4; - image_info.m_orig_width = slice_desc.m_orig_width; - image_info.m_orig_height = slice_desc.m_orig_height; - image_info.m_num_blocks_x = slice_desc.m_num_blocks_x; - image_info.m_num_blocks_y = slice_desc.m_num_blocks_y; - image_info.m_total_blocks = image_info.m_num_blocks_x * image_info.m_num_blocks_y; - image_info.m_first_slice_index = slice_index; - - return true; - } - - uint32_t basisu_transcoder::get_total_image_levels(const void* pData, uint32_t data_size, uint32_t image_index) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_image_levels: header validation failed\n"); - return false; - } - - int slice_index = find_first_slice_index(pData, data_size, image_index, 0); - if (slice_index < 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_image_levels: failed finding slice\n"); - return false; - } - - const basis_file_header* pHeader = static_cast(pData); - - if (image_index >= pHeader->m_total_images) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_image_levels: invalid image_index\n"); - return false; - } - - const basis_slice_desc* pSlice_descs = reinterpret_cast(static_cast(pData) + pHeader->m_slice_desc_file_ofs); - - uint32_t total_levels = 1; - for (uint32_t i = slice_index + 1; i < pHeader->m_total_slices; i++) - if (pSlice_descs[i].m_image_index == image_index) - total_levels = basisu::maximum(total_levels, pSlice_descs[i].m_level_index + 1); - else - break; - - const uint32_t cMaxSupportedLevels = 16; - if (total_levels > cMaxSupportedLevels) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_total_image_levels: invalid image levels!\n"); - return false; - } - - return total_levels; - } - - bool basisu_transcoder::get_image_level_desc(const void* pData, uint32_t data_size, uint32_t image_index, uint32_t level_index, uint32_t& orig_width, uint32_t& orig_height, uint32_t& total_blocks) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_level_desc: header validation failed\n"); - return false; - } - - int slice_index = find_first_slice_index(pData, data_size, image_index, level_index); - if (slice_index < 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_level_desc: failed finding slice\n"); - return false; - } - - const basis_file_header* pHeader = static_cast(pData); - - if (image_index >= pHeader->m_total_images) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_level_desc: invalid image_index\n"); - return false; - } - - const basis_slice_desc* pSlice_descs = reinterpret_cast(static_cast(pData) + pHeader->m_slice_desc_file_ofs); - - const basis_slice_desc& slice_desc = pSlice_descs[slice_index]; - - orig_width = slice_desc.m_orig_width; - orig_height = slice_desc.m_orig_height; - total_blocks = slice_desc.m_num_blocks_x * slice_desc.m_num_blocks_y; - - return true; - } - - bool basisu_transcoder::get_image_level_info(const void* pData, uint32_t data_size, basisu_image_level_info& image_info, uint32_t image_index, uint32_t level_index) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_level_info: validate_file_checksums failed\n"); - return false; - } - - int slice_index = find_first_slice_index(pData, data_size, image_index, level_index); - if (slice_index < 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_level_info: failed finding slice\n"); - return false; - } - - const basis_file_header* pHeader = static_cast(pData); - - if (image_index >= pHeader->m_total_images) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_image_level_info: invalid image_index\n"); - return false; - } - - const basis_slice_desc* pSlice_descs = reinterpret_cast(static_cast(pData) + pHeader->m_slice_desc_file_ofs); - - const basis_slice_desc& slice_desc = pSlice_descs[slice_index]; - - image_info.m_image_index = image_index; - image_info.m_level_index = level_index; - - // For ETC1S, if anything has alpha all images have alpha. For UASTC, we only report alpha when the image actually has alpha. - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - image_info.m_alpha_flag = (pHeader->m_flags & cBASISHeaderFlagHasAlphaSlices) != 0; - else - image_info.m_alpha_flag = (slice_desc.m_flags & cSliceDescFlagsHasAlpha) != 0; - - image_info.m_iframe_flag = (slice_desc.m_flags & cSliceDescFlagsFrameIsIFrame) != 0; - image_info.m_width = slice_desc.m_num_blocks_x * 4; - image_info.m_height = slice_desc.m_num_blocks_y * 4; - image_info.m_orig_width = slice_desc.m_orig_width; - image_info.m_orig_height = slice_desc.m_orig_height; - image_info.m_num_blocks_x = slice_desc.m_num_blocks_x; - image_info.m_num_blocks_y = slice_desc.m_num_blocks_y; - image_info.m_total_blocks = image_info.m_num_blocks_x * image_info.m_num_blocks_y; - image_info.m_first_slice_index = slice_index; - - image_info.m_rgb_file_ofs = slice_desc.m_file_ofs; - image_info.m_rgb_file_len = slice_desc.m_file_size; - image_info.m_alpha_file_ofs = 0; - image_info.m_alpha_file_len = 0; - - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - { - if (pHeader->m_flags & cBASISHeaderFlagHasAlphaSlices) - { - assert((slice_index + 1) < (int)pHeader->m_total_slices); - image_info.m_alpha_file_ofs = pSlice_descs[slice_index + 1].m_file_ofs; - image_info.m_alpha_file_len = pSlice_descs[slice_index + 1].m_file_size; - } - } - - return true; - } - - bool basisu_transcoder::get_file_info(const void* pData, uint32_t data_size, basisu_file_info& file_info) const - { - if (!validate_file_checksums(pData, data_size, false)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_file_info: validate_file_checksums failed\n"); - return false; - } - - const basis_file_header* pHeader = static_cast(pData); - const basis_slice_desc* pSlice_descs = reinterpret_cast(static_cast(pData) + pHeader->m_slice_desc_file_ofs); - - file_info.m_version = pHeader->m_ver; - - file_info.m_total_header_size = sizeof(basis_file_header) + pHeader->m_total_slices * sizeof(basis_slice_desc); - - file_info.m_total_selectors = pHeader->m_total_selectors; - file_info.m_selector_codebook_ofs = pHeader->m_selector_cb_file_ofs; - file_info.m_selector_codebook_size = pHeader->m_selector_cb_file_size; - - file_info.m_total_endpoints = pHeader->m_total_endpoints; - file_info.m_endpoint_codebook_ofs = pHeader->m_endpoint_cb_file_ofs; - file_info.m_endpoint_codebook_size = pHeader->m_endpoint_cb_file_size; - - file_info.m_tables_ofs = pHeader->m_tables_file_ofs; - file_info.m_tables_size = pHeader->m_tables_file_size; - - file_info.m_tex_format = static_cast(static_cast(pHeader->m_tex_format)); - - file_info.m_etc1s = (pHeader->m_tex_format == (int)basis_tex_format::cETC1S); - - file_info.m_y_flipped = (pHeader->m_flags & cBASISHeaderFlagYFlipped) != 0; - file_info.m_has_alpha_slices = (pHeader->m_flags & cBASISHeaderFlagHasAlphaSlices) != 0; - - const uint32_t total_slices = pHeader->m_total_slices; - - file_info.m_slice_info.resize(total_slices); - - file_info.m_slices_size = 0; - - file_info.m_tex_type = static_cast(static_cast(pHeader->m_tex_type)); - - if (file_info.m_tex_type > cBASISTexTypeTotal) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_file_info: invalid texture type, file is corrupted\n"); - return false; - } - - file_info.m_us_per_frame = pHeader->m_us_per_frame; - file_info.m_userdata0 = pHeader->m_userdata0; - file_info.m_userdata1 = pHeader->m_userdata1; - - file_info.m_image_mipmap_levels.resize(0); - file_info.m_image_mipmap_levels.resize(pHeader->m_total_images); - - file_info.m_total_images = pHeader->m_total_images; - - for (uint32_t i = 0; i < total_slices; i++) - { - file_info.m_slices_size += pSlice_descs[i].m_file_size; - - basisu_slice_info& slice_info = file_info.m_slice_info[i]; - - slice_info.m_orig_width = pSlice_descs[i].m_orig_width; - slice_info.m_orig_height = pSlice_descs[i].m_orig_height; - slice_info.m_width = pSlice_descs[i].m_num_blocks_x * 4; - slice_info.m_height = pSlice_descs[i].m_num_blocks_y * 4; - slice_info.m_num_blocks_x = pSlice_descs[i].m_num_blocks_x; - slice_info.m_num_blocks_y = pSlice_descs[i].m_num_blocks_y; - slice_info.m_total_blocks = slice_info.m_num_blocks_x * slice_info.m_num_blocks_y; - slice_info.m_compressed_size = pSlice_descs[i].m_file_size; - slice_info.m_slice_index = i; - slice_info.m_image_index = pSlice_descs[i].m_image_index; - slice_info.m_level_index = pSlice_descs[i].m_level_index; - slice_info.m_unpacked_slice_crc16 = pSlice_descs[i].m_slice_data_crc16; - slice_info.m_alpha_flag = (pSlice_descs[i].m_flags & cSliceDescFlagsHasAlpha) != 0; - slice_info.m_iframe_flag = (pSlice_descs[i].m_flags & cSliceDescFlagsFrameIsIFrame) != 0; - - if (pSlice_descs[i].m_image_index >= pHeader->m_total_images) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_file_info: slice desc's image index is invalid\n"); - return false; - } - - file_info.m_image_mipmap_levels[pSlice_descs[i].m_image_index] = basisu::maximum(file_info.m_image_mipmap_levels[pSlice_descs[i].m_image_index], pSlice_descs[i].m_level_index + 1); - - if (file_info.m_image_mipmap_levels[pSlice_descs[i].m_image_index] > 16) - { - BASISU_DEVEL_ERROR("basisu_transcoder::get_file_info: slice mipmap level is invalid\n"); - return false; - } - } - - return true; - } - - bool basisu_transcoder::start_transcoding(const void* pData, uint32_t data_size) - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: header validation failed\n"); - return false; - } - - const basis_file_header* pHeader = reinterpret_cast(pData); - const uint8_t* pDataU8 = static_cast(pData); - - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - { - if (m_lowlevel_etc1s_decoder.m_local_endpoints.size()) - { - m_lowlevel_etc1s_decoder.clear(); - } - - if (pHeader->m_flags & cBASISHeaderFlagUsesGlobalCodebook) - { - if (!m_lowlevel_etc1s_decoder.get_global_codebooks()) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: File uses global codebooks, but set_global_codebooks() has not been called\n"); - return false; - } - if (!m_lowlevel_etc1s_decoder.get_global_codebooks()->get_endpoints().size()) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: Global codebooks must be unpacked first by calling start_transcoding()\n"); - return false; - } - if ((m_lowlevel_etc1s_decoder.get_global_codebooks()->get_endpoints().size() != pHeader->m_total_endpoints) || - (m_lowlevel_etc1s_decoder.get_global_codebooks()->get_selectors().size() != pHeader->m_total_selectors)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: Global codebook size mismatch (wrong codebooks for file).\n"); - return false; - } - if (!pHeader->m_tables_file_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted (2)\n"); - return false; - } - if (pHeader->m_tables_file_ofs > data_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted or passed in buffer too small (4)\n"); - return false; - } - if (pHeader->m_tables_file_size > (data_size - pHeader->m_tables_file_ofs)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted or passed in buffer too small (5)\n"); - return false; - } - } - else - { - if (!pHeader->m_endpoint_cb_file_size || !pHeader->m_selector_cb_file_size || !pHeader->m_tables_file_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted (0)\n"); - return false; - } - - if ((pHeader->m_endpoint_cb_file_ofs > data_size) || (pHeader->m_selector_cb_file_ofs > data_size) || (pHeader->m_tables_file_ofs > data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted or passed in buffer too small (1)\n"); - return false; - } - - if (pHeader->m_endpoint_cb_file_size > (data_size - pHeader->m_endpoint_cb_file_ofs)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted or passed in buffer too small (2)\n"); - return false; - } - - if (pHeader->m_selector_cb_file_size > (data_size - pHeader->m_selector_cb_file_ofs)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted or passed in buffer too small (3)\n"); - return false; - } - - if (pHeader->m_tables_file_size > (data_size - pHeader->m_tables_file_ofs)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: file is corrupted or passed in buffer too small (3)\n"); - return false; - } - - if (!m_lowlevel_etc1s_decoder.decode_palettes( - pHeader->m_total_endpoints, pDataU8 + pHeader->m_endpoint_cb_file_ofs, pHeader->m_endpoint_cb_file_size, - pHeader->m_total_selectors, pDataU8 + pHeader->m_selector_cb_file_ofs, pHeader->m_selector_cb_file_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: decode_palettes failed\n"); - return false; - } - } - - if (!m_lowlevel_etc1s_decoder.decode_tables(pDataU8 + pHeader->m_tables_file_ofs, pHeader->m_tables_file_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::start_transcoding: decode_tables failed\n"); - return false; - } - } - else - { - // Nothing special to do for UASTC. - if (m_lowlevel_etc1s_decoder.m_local_endpoints.size()) - { - m_lowlevel_etc1s_decoder.clear(); - } - } - - m_ready_to_transcode = true; - - return true; - } - - bool basisu_transcoder::stop_transcoding() - { - m_lowlevel_etc1s_decoder.clear(); - - m_ready_to_transcode = false; - - return true; - } - - bool basisu_transcoder::transcode_slice(const void* pData, uint32_t data_size, uint32_t slice_index, void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, uint32_t decode_flags, uint32_t output_row_pitch_in_blocks_or_pixels, basisu_transcoder_state* pState, void *pAlpha_blocks, uint32_t output_rows_in_pixels, int channel0, int channel1) const - { - if (!m_ready_to_transcode) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: must call start_transcoding first\n"); - return false; - } - - if (decode_flags & cDecodeFlagsPVRTCDecodeToNextPow2) - { - // TODO: Not yet supported - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: cDecodeFlagsPVRTCDecodeToNextPow2 currently unsupported\n"); - return false; - } - - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: header validation failed\n"); - return false; - } - - const basis_file_header* pHeader = reinterpret_cast(pData); - - const uint8_t* pDataU8 = static_cast(pData); - - if (slice_index >= pHeader->m_total_slices) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: slice_index >= pHeader->m_total_slices\n"); - return false; - } - - const basis_slice_desc& slice_desc = reinterpret_cast(pDataU8 + pHeader->m_slice_desc_file_ofs)[slice_index]; - - uint32_t total_4x4_blocks = slice_desc.m_num_blocks_x * slice_desc.m_num_blocks_y; - - if (basis_block_format_is_uncompressed(fmt)) - { - // Assume the output buffer is orig_width by orig_height - if (!output_row_pitch_in_blocks_or_pixels) - output_row_pitch_in_blocks_or_pixels = slice_desc.m_orig_width; - - if (!output_rows_in_pixels) - output_rows_in_pixels = slice_desc.m_orig_height; - - // Now make sure the output buffer is large enough, or we'll overwrite memory. - if (output_blocks_buf_size_in_blocks_or_pixels < (output_rows_in_pixels * output_row_pitch_in_blocks_or_pixels)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: output_blocks_buf_size_in_blocks_or_pixels < (output_rows_in_pixels * output_row_pitch_in_blocks_or_pixels)\n"); - return false; - } - } - else if (fmt == block_format::cFXT1_RGB) - { - const uint32_t num_blocks_fxt1_x = (slice_desc.m_orig_width + 7) / 8; - const uint32_t num_blocks_fxt1_y = (slice_desc.m_orig_height + 3) / 4; - const uint32_t total_blocks_fxt1 = num_blocks_fxt1_x * num_blocks_fxt1_y; - - if (output_blocks_buf_size_in_blocks_or_pixels < total_blocks_fxt1) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: output_blocks_buf_size_in_blocks_or_pixels < total_blocks_fxt1\n"); - return false; - } - } - else - { - if (output_blocks_buf_size_in_blocks_or_pixels < total_4x4_blocks) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: output_blocks_buf_size_in_blocks_or_pixels < total_blocks\n"); - return false; - } - } - - if (fmt != block_format::cETC1) - { - if ((fmt == block_format::cPVRTC1_4_RGB) || (fmt == block_format::cPVRTC1_4_RGBA)) - { - if ((!basisu::is_pow2(slice_desc.m_num_blocks_x * 4)) || (!basisu::is_pow2(slice_desc.m_num_blocks_y * 4))) - { - // PVRTC1 only supports power of 2 dimensions - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: PVRTC1 only supports power of 2 dimensions\n"); - return false; - } - } - } - - if (slice_desc.m_file_ofs > data_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: invalid slice_desc.m_file_ofs, or passed in buffer too small\n"); - return false; - } - - const uint32_t data_size_left = data_size - slice_desc.m_file_ofs; - if (data_size_left < slice_desc.m_file_size) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_slice: invalid slice_desc.m_file_size, or passed in buffer too small\n"); - return false; - } - - if (pHeader->m_tex_format == (int)basis_tex_format::cUASTC4x4) - { - return m_lowlevel_uastc_decoder.transcode_slice(pOutput_blocks, slice_desc.m_num_blocks_x, slice_desc.m_num_blocks_y, - pDataU8 + slice_desc.m_file_ofs, slice_desc.m_file_size, - fmt, output_block_or_pixel_stride_in_bytes, (decode_flags & cDecodeFlagsBC1ForbidThreeColorBlocks) == 0, *pHeader, slice_desc, output_row_pitch_in_blocks_or_pixels, pState, - output_rows_in_pixels, channel0, channel1, decode_flags); - } - else - { - return m_lowlevel_etc1s_decoder.transcode_slice(pOutput_blocks, slice_desc.m_num_blocks_x, slice_desc.m_num_blocks_y, - pDataU8 + slice_desc.m_file_ofs, slice_desc.m_file_size, - fmt, output_block_or_pixel_stride_in_bytes, (decode_flags & cDecodeFlagsBC1ForbidThreeColorBlocks) == 0, *pHeader, slice_desc, output_row_pitch_in_blocks_or_pixels, pState, - (decode_flags & cDecodeFlagsOutputHasAlphaIndices) != 0, pAlpha_blocks, output_rows_in_pixels); - } - } - - int basisu_transcoder::find_first_slice_index(const void* pData, uint32_t data_size, uint32_t image_index, uint32_t level_index) const - { - BASISU_NOTE_UNUSED(data_size); - - const basis_file_header* pHeader = reinterpret_cast(pData); - const uint8_t* pDataU8 = static_cast(pData); - - // For very large basis files this search could be painful - // TODO: Binary search this - for (uint32_t slice_iter = 0; slice_iter < pHeader->m_total_slices; slice_iter++) - { - const basis_slice_desc& slice_desc = reinterpret_cast(pDataU8 + pHeader->m_slice_desc_file_ofs)[slice_iter]; - if ((slice_desc.m_image_index == image_index) && (slice_desc.m_level_index == level_index)) - return slice_iter; - } - - BASISU_DEVEL_ERROR("basisu_transcoder::find_first_slice_index: didn't find slice\n"); - - return -1; - } - - int basisu_transcoder::find_slice(const void* pData, uint32_t data_size, uint32_t image_index, uint32_t level_index, bool alpha_data) const - { - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::find_slice: header validation failed\n"); - return false; - } - - const basis_file_header* pHeader = reinterpret_cast(pData); - const uint8_t* pDataU8 = static_cast(pData); - const basis_slice_desc* pSlice_descs = reinterpret_cast(pDataU8 + pHeader->m_slice_desc_file_ofs); - - // For very large basis files this search could be painful - // TODO: Binary search this - for (uint32_t slice_iter = 0; slice_iter < pHeader->m_total_slices; slice_iter++) - { - const basis_slice_desc& slice_desc = pSlice_descs[slice_iter]; - if ((slice_desc.m_image_index == image_index) && (slice_desc.m_level_index == level_index)) - { - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - { - const bool slice_alpha = (slice_desc.m_flags & cSliceDescFlagsHasAlpha) != 0; - if (slice_alpha == alpha_data) - return slice_iter; - } - else - { - return slice_iter; - } - } - } - - BASISU_DEVEL_ERROR("basisu_transcoder::find_slice: didn't find slice\n"); - - return -1; - } - - void basisu_transcoder::write_opaque_alpha_blocks( - uint32_t num_blocks_x, uint32_t num_blocks_y, - void* pOutput_blocks, block_format fmt, - uint32_t block_stride_in_bytes, uint32_t output_row_pitch_in_blocks_or_pixels) - { - // 'num_blocks_y', 'pOutput_blocks' & 'block_stride_in_bytes' unused - // when disabling BASISD_SUPPORT_ETC2_EAC_A8 *and* BASISD_SUPPORT_DXT5A - BASISU_NOTE_UNUSED(num_blocks_y); - BASISU_NOTE_UNUSED(pOutput_blocks); - BASISU_NOTE_UNUSED(block_stride_in_bytes); - - if (!output_row_pitch_in_blocks_or_pixels) - output_row_pitch_in_blocks_or_pixels = num_blocks_x; - - if ((fmt == block_format::cETC2_EAC_A8) || (fmt == block_format::cETC2_EAC_R11)) - { -#if BASISD_SUPPORT_ETC2_EAC_A8 - eac_block blk; - blk.m_base = 255; - blk.m_multiplier = 1; - blk.m_table = 13; - - // Selectors are all 4's - memcpy(&blk.m_selectors, g_etc2_eac_a8_sel4, sizeof(g_etc2_eac_a8_sel4)); - - for (uint32_t y = 0; y < num_blocks_y; y++) - { - uint32_t dst_ofs = y * output_row_pitch_in_blocks_or_pixels * block_stride_in_bytes; - for (uint32_t x = 0; x < num_blocks_x; x++) - { - memcpy((uint8_t*)pOutput_blocks + dst_ofs, &blk, sizeof(blk)); - dst_ofs += block_stride_in_bytes; - } - } -#endif - } - else if (fmt == block_format::cBC4) - { -#if BASISD_SUPPORT_DXT5A - dxt5a_block blk; - blk.m_endpoints[0] = 255; - blk.m_endpoints[1] = 255; - memset(blk.m_selectors, 0, sizeof(blk.m_selectors)); - - for (uint32_t y = 0; y < num_blocks_y; y++) - { - uint32_t dst_ofs = y * output_row_pitch_in_blocks_or_pixels * block_stride_in_bytes; - for (uint32_t x = 0; x < num_blocks_x; x++) - { - memcpy((uint8_t*)pOutput_blocks + dst_ofs, &blk, sizeof(blk)); - dst_ofs += block_stride_in_bytes; - } - } -#endif - } - } - - bool basisu_transcoder::transcode_image_level( - const void* pData, uint32_t data_size, - uint32_t image_index, uint32_t level_index, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - transcoder_texture_format fmt, - uint32_t decode_flags, uint32_t output_row_pitch_in_blocks_or_pixels, basisu_transcoder_state *pState, uint32_t output_rows_in_pixels) const - { - const uint32_t bytes_per_block_or_pixel = basis_get_bytes_per_block_or_pixel(fmt); - - if (!m_ready_to_transcode) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: must call start_transcoding() first\n"); - return false; - } - - //const bool transcode_alpha_data_to_opaque_formats = (decode_flags & cDecodeFlagsTranscodeAlphaDataToOpaqueFormats) != 0; - - if (decode_flags & cDecodeFlagsPVRTCDecodeToNextPow2) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: cDecodeFlagsPVRTCDecodeToNextPow2 currently unsupported\n"); - // TODO: Not yet supported - return false; - } - - if (!validate_header_quick(pData, data_size)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: header validation failed\n"); - return false; - } - - const basis_file_header* pHeader = reinterpret_cast(pData); - - const uint8_t* pDataU8 = static_cast(pData); - - const basis_slice_desc* pSlice_descs = reinterpret_cast(pDataU8 + pHeader->m_slice_desc_file_ofs); - - const bool basis_file_has_alpha_slices = (pHeader->m_flags & cBASISHeaderFlagHasAlphaSlices) != 0; - - int slice_index = find_first_slice_index(pData, data_size, image_index, level_index); - if (slice_index < 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: failed finding slice index\n"); - // Unable to find the requested image/level - return false; - } - - if ((fmt == transcoder_texture_format::cTFPVRTC1_4_RGBA) && (!basis_file_has_alpha_slices)) - { - // Switch to PVRTC1 RGB if the input doesn't have alpha. - fmt = transcoder_texture_format::cTFPVRTC1_4_RGB; - } - - if (pHeader->m_tex_format == (int)basis_tex_format::cETC1S) - { - if (pSlice_descs[slice_index].m_flags & cSliceDescFlagsHasAlpha) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: alpha basis file has out of order alpha slice\n"); - - // The first slice shouldn't have alpha data in a properly formed basis file - return false; - } - - if (basis_file_has_alpha_slices) - { - // The alpha data should immediately follow the color data, and have the same resolution. - if ((slice_index + 1U) >= pHeader->m_total_slices) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: alpha basis file has missing alpha slice\n"); - // basis file is missing the alpha slice - return false; - } - - // Basic sanity checks - if ((pSlice_descs[slice_index + 1].m_flags & cSliceDescFlagsHasAlpha) == 0) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: alpha basis file has missing alpha slice (flag check)\n"); - // This slice should have alpha data - return false; - } - - if ((pSlice_descs[slice_index].m_num_blocks_x != pSlice_descs[slice_index + 1].m_num_blocks_x) || (pSlice_descs[slice_index].m_num_blocks_y != pSlice_descs[slice_index + 1].m_num_blocks_y)) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: alpha basis file slice dimensions bad\n"); - // Alpha slice should have been the same res as the color slice - return false; - } - } - } - - bool status = false; - - const uint32_t total_slice_blocks = pSlice_descs[slice_index].m_num_blocks_x * pSlice_descs[slice_index].m_num_blocks_y; - - if (((fmt == transcoder_texture_format::cTFPVRTC1_4_RGB) || (fmt == transcoder_texture_format::cTFPVRTC1_4_RGBA)) && (output_blocks_buf_size_in_blocks_or_pixels > total_slice_blocks)) - { - // The transcoder doesn't write beyond total_slice_blocks, so we need to clear the rest ourselves. - // For GL usage, PVRTC1 4bpp image size is (max(width, 8)* max(height, 8) * 4 + 7) / 8. - // However, for KTX and internally in Basis this formula isn't used, it's just ((width+3)/4) * ((height+3)/4) * bytes_per_block_or_pixel. This is all the transcoder actually writes to memory. - memset(static_cast(pOutput_blocks) + total_slice_blocks * bytes_per_block_or_pixel, 0, (output_blocks_buf_size_in_blocks_or_pixels - total_slice_blocks) * bytes_per_block_or_pixel); - } - - if (pHeader->m_tex_format == (int)basis_tex_format::cUASTC4x4) - { - const basis_slice_desc* pSlice_desc = &pSlice_descs[slice_index]; - - // Use the container independent image transcode method. - status = m_lowlevel_uastc_decoder.transcode_image(fmt, - pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, - (const uint8_t*)pData, data_size, pSlice_desc->m_num_blocks_x, pSlice_desc->m_num_blocks_y, pSlice_desc->m_orig_width, pSlice_desc->m_orig_height, pSlice_desc->m_level_index, - pSlice_desc->m_file_ofs, pSlice_desc->m_file_size, - decode_flags, basis_file_has_alpha_slices, pHeader->m_tex_type == cBASISTexTypeVideoFrames, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - } - else - { - // ETC1S - const basis_slice_desc* pSlice_desc = &pSlice_descs[slice_index]; - const basis_slice_desc* pAlpha_slice_desc = basis_file_has_alpha_slices ? &pSlice_descs[slice_index + 1] : nullptr; - - assert((pSlice_desc->m_flags & cSliceDescFlagsHasAlpha) == 0); - - if (pAlpha_slice_desc) - { - // Basic sanity checks - assert((pAlpha_slice_desc->m_flags & cSliceDescFlagsHasAlpha) != 0); - assert(pSlice_desc->m_num_blocks_x == pAlpha_slice_desc->m_num_blocks_x); - assert(pSlice_desc->m_num_blocks_y == pAlpha_slice_desc->m_num_blocks_y); - assert(pSlice_desc->m_level_index == pAlpha_slice_desc->m_level_index); - } - - // Use the container independent image transcode method. - status = m_lowlevel_etc1s_decoder.transcode_image(fmt, - pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, - (const uint8_t *)pData, data_size, pSlice_desc->m_num_blocks_x, pSlice_desc->m_num_blocks_y, pSlice_desc->m_orig_width, pSlice_desc->m_orig_height, pSlice_desc->m_level_index, - pSlice_desc->m_file_ofs, pSlice_desc->m_file_size, - (pAlpha_slice_desc != nullptr) ? (uint32_t)pAlpha_slice_desc->m_file_ofs : 0U, (pAlpha_slice_desc != nullptr) ? (uint32_t)pAlpha_slice_desc->m_file_size : 0U, - decode_flags, basis_file_has_alpha_slices, pHeader->m_tex_type == cBASISTexTypeVideoFrames, output_row_pitch_in_blocks_or_pixels, pState, output_rows_in_pixels); - - } // if (pHeader->m_tex_format == (int)basis_tex_format::cUASTC4x4) - - if (!status) - { - BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: Returning false\n"); - } - else - { - //BASISU_DEVEL_ERROR("basisu_transcoder::transcode_image_level: Returning true\n"); - } - - return status; - } - - uint32_t basis_get_bytes_per_block_or_pixel(transcoder_texture_format fmt) - { - switch (fmt) - { - case transcoder_texture_format::cTFETC1_RGB: - case transcoder_texture_format::cTFBC1_RGB: - case transcoder_texture_format::cTFBC4_R: - case transcoder_texture_format::cTFPVRTC1_4_RGB: - case transcoder_texture_format::cTFPVRTC1_4_RGBA: - case transcoder_texture_format::cTFATC_RGB: - case transcoder_texture_format::cTFPVRTC2_4_RGB: - case transcoder_texture_format::cTFPVRTC2_4_RGBA: - case transcoder_texture_format::cTFETC2_EAC_R11: - return 8; - case transcoder_texture_format::cTFBC7_RGBA: - case transcoder_texture_format::cTFBC7_ALT: - case transcoder_texture_format::cTFETC2_RGBA: - case transcoder_texture_format::cTFBC3_RGBA: - case transcoder_texture_format::cTFBC5_RG: - case transcoder_texture_format::cTFASTC_4x4_RGBA: - case transcoder_texture_format::cTFATC_RGBA: - case transcoder_texture_format::cTFFXT1_RGB: - case transcoder_texture_format::cTFETC2_EAC_RG11: - return 16; - case transcoder_texture_format::cTFRGBA32: - return sizeof(uint32_t); - case transcoder_texture_format::cTFRGB565: - case transcoder_texture_format::cTFBGR565: - case transcoder_texture_format::cTFRGBA4444: - return sizeof(uint16_t); - default: - assert(0); - BASISU_DEVEL_ERROR("basis_get_basisu_texture_format: Invalid fmt\n"); - break; - } - return 0; - } - - const char* basis_get_format_name(transcoder_texture_format fmt) - { - switch (fmt) - { - case transcoder_texture_format::cTFETC1_RGB: return "ETC1_RGB"; - case transcoder_texture_format::cTFBC1_RGB: return "BC1_RGB"; - case transcoder_texture_format::cTFBC4_R: return "BC4_R"; - case transcoder_texture_format::cTFPVRTC1_4_RGB: return "PVRTC1_4_RGB"; - case transcoder_texture_format::cTFPVRTC1_4_RGBA: return "PVRTC1_4_RGBA"; - case transcoder_texture_format::cTFBC7_RGBA: return "BC7_RGBA"; - case transcoder_texture_format::cTFBC7_ALT: return "BC7_RGBA"; - case transcoder_texture_format::cTFETC2_RGBA: return "ETC2_RGBA"; - case transcoder_texture_format::cTFBC3_RGBA: return "BC3_RGBA"; - case transcoder_texture_format::cTFBC5_RG: return "BC5_RG"; - case transcoder_texture_format::cTFASTC_4x4_RGBA: return "ASTC_RGBA"; - case transcoder_texture_format::cTFATC_RGB: return "ATC_RGB"; - case transcoder_texture_format::cTFATC_RGBA: return "ATC_RGBA"; - case transcoder_texture_format::cTFRGBA32: return "RGBA32"; - case transcoder_texture_format::cTFRGB565: return "RGB565"; - case transcoder_texture_format::cTFBGR565: return "BGR565"; - case transcoder_texture_format::cTFRGBA4444: return "RGBA4444"; - case transcoder_texture_format::cTFFXT1_RGB: return "FXT1_RGB"; - case transcoder_texture_format::cTFPVRTC2_4_RGB: return "PVRTC2_4_RGB"; - case transcoder_texture_format::cTFPVRTC2_4_RGBA: return "PVRTC2_4_RGBA"; - case transcoder_texture_format::cTFETC2_EAC_R11: return "ETC2_EAC_R11"; - case transcoder_texture_format::cTFETC2_EAC_RG11: return "ETC2_EAC_RG11"; - default: - assert(0); - BASISU_DEVEL_ERROR("basis_get_basisu_texture_format: Invalid fmt\n"); - break; - } - return ""; - } - - const char* basis_get_block_format_name(block_format fmt) - { - switch (fmt) - { - case block_format::cETC1: return "ETC1"; - case block_format::cBC1: return "BC1"; - case block_format::cPVRTC1_4_RGB: return "PVRTC1_4_RGB"; - case block_format::cPVRTC1_4_RGBA: return "PVRTC1_4_RGBA"; - case block_format::cBC7: return "BC7"; - case block_format::cETC2_RGBA: return "ETC2_RGBA"; - case block_format::cBC3: return "BC3"; - case block_format::cASTC_4x4: return "ASTC_4x4"; - case block_format::cATC_RGB: return "ATC_RGB"; - case block_format::cRGBA32: return "RGBA32"; - case block_format::cRGB565: return "RGB565"; - case block_format::cBGR565: return "BGR565"; - case block_format::cRGBA4444: return "RGBA4444"; - case block_format::cUASTC_4x4: return "UASTC_4x4"; - case block_format::cFXT1_RGB: return "FXT1_RGB"; - case block_format::cPVRTC2_4_RGB: return "PVRTC2_4_RGB"; - case block_format::cPVRTC2_4_RGBA: return "PVRTC2_4_RGBA"; - case block_format::cETC2_EAC_R11: return "ETC2_EAC_R11"; - case block_format::cETC2_EAC_RG11: return "ETC2_EAC_RG11"; - default: - assert(0); - BASISU_DEVEL_ERROR("basis_get_basisu_texture_format: Invalid fmt\n"); - break; - } - return ""; - } - - const char* basis_get_texture_type_name(basis_texture_type tex_type) - { - switch (tex_type) - { - case cBASISTexType2D: return "2D"; - case cBASISTexType2DArray: return "2D array"; - case cBASISTexTypeCubemapArray: return "cubemap array"; - case cBASISTexTypeVideoFrames: return "video"; - case cBASISTexTypeVolume: return "3D"; - default: - assert(0); - BASISU_DEVEL_ERROR("basis_get_texture_type_name: Invalid tex_type\n"); - break; - } - return ""; - } - - bool basis_transcoder_format_has_alpha(transcoder_texture_format fmt) - { - switch (fmt) - { - case transcoder_texture_format::cTFETC2_RGBA: - case transcoder_texture_format::cTFBC3_RGBA: - case transcoder_texture_format::cTFASTC_4x4_RGBA: - case transcoder_texture_format::cTFBC7_RGBA: - case transcoder_texture_format::cTFBC7_ALT: - case transcoder_texture_format::cTFPVRTC1_4_RGBA: - case transcoder_texture_format::cTFPVRTC2_4_RGBA: - case transcoder_texture_format::cTFATC_RGBA: - case transcoder_texture_format::cTFRGBA32: - case transcoder_texture_format::cTFRGBA4444: - return true; - default: - break; - } - return false; - } - - basisu::texture_format basis_get_basisu_texture_format(transcoder_texture_format fmt) - { - switch (fmt) - { - case transcoder_texture_format::cTFETC1_RGB: return basisu::texture_format::cETC1; - case transcoder_texture_format::cTFBC1_RGB: return basisu::texture_format::cBC1; - case transcoder_texture_format::cTFBC4_R: return basisu::texture_format::cBC4; - case transcoder_texture_format::cTFPVRTC1_4_RGB: return basisu::texture_format::cPVRTC1_4_RGB; - case transcoder_texture_format::cTFPVRTC1_4_RGBA: return basisu::texture_format::cPVRTC1_4_RGBA; - case transcoder_texture_format::cTFBC7_RGBA: return basisu::texture_format::cBC7; - case transcoder_texture_format::cTFBC7_ALT: return basisu::texture_format::cBC7; - case transcoder_texture_format::cTFETC2_RGBA: return basisu::texture_format::cETC2_RGBA; - case transcoder_texture_format::cTFBC3_RGBA: return basisu::texture_format::cBC3; - case transcoder_texture_format::cTFBC5_RG: return basisu::texture_format::cBC5; - case transcoder_texture_format::cTFASTC_4x4_RGBA: return basisu::texture_format::cASTC4x4; - case transcoder_texture_format::cTFATC_RGB: return basisu::texture_format::cATC_RGB; - case transcoder_texture_format::cTFATC_RGBA: return basisu::texture_format::cATC_RGBA_INTERPOLATED_ALPHA; - case transcoder_texture_format::cTFRGBA32: return basisu::texture_format::cRGBA32; - case transcoder_texture_format::cTFRGB565: return basisu::texture_format::cRGB565; - case transcoder_texture_format::cTFBGR565: return basisu::texture_format::cBGR565; - case transcoder_texture_format::cTFRGBA4444: return basisu::texture_format::cRGBA4444; - case transcoder_texture_format::cTFFXT1_RGB: return basisu::texture_format::cFXT1_RGB; - case transcoder_texture_format::cTFPVRTC2_4_RGB: return basisu::texture_format::cPVRTC2_4_RGBA; - case transcoder_texture_format::cTFPVRTC2_4_RGBA: return basisu::texture_format::cPVRTC2_4_RGBA; - case transcoder_texture_format::cTFETC2_EAC_R11: return basisu::texture_format::cETC2_R11_EAC; - case transcoder_texture_format::cTFETC2_EAC_RG11: return basisu::texture_format::cETC2_RG11_EAC; - default: - assert(0); - BASISU_DEVEL_ERROR("basis_get_basisu_texture_format: Invalid fmt\n"); - break; - } - return basisu::texture_format::cInvalidTextureFormat; - } - - bool basis_transcoder_format_is_uncompressed(transcoder_texture_format tex_type) - { - switch (tex_type) - { - case transcoder_texture_format::cTFRGBA32: - case transcoder_texture_format::cTFRGB565: - case transcoder_texture_format::cTFBGR565: - case transcoder_texture_format::cTFRGBA4444: - return true; - default: - break; - } - return false; - } - - bool basis_block_format_is_uncompressed(block_format blk_fmt) - { - switch (blk_fmt) - { - case block_format::cRGB32: - case block_format::cRGBA32: - case block_format::cA32: - case block_format::cRGB565: - case block_format::cBGR565: - case block_format::cRGBA4444: - case block_format::cRGBA4444_COLOR: - case block_format::cRGBA4444_ALPHA: - case block_format::cRGBA4444_COLOR_OPAQUE: - return true; - default: - break; - } - return false; - } - - uint32_t basis_get_uncompressed_bytes_per_pixel(transcoder_texture_format fmt) - { - switch (fmt) - { - case transcoder_texture_format::cTFRGBA32: - return sizeof(uint32_t); - case transcoder_texture_format::cTFRGB565: - case transcoder_texture_format::cTFBGR565: - case transcoder_texture_format::cTFRGBA4444: - return sizeof(uint16_t); - default: - break; - } - return 0; - } - - uint32_t basis_get_block_width(transcoder_texture_format tex_type) - { - switch (tex_type) - { - case transcoder_texture_format::cTFFXT1_RGB: - return 8; - default: - break; - } - return 4; - } - - uint32_t basis_get_block_height(transcoder_texture_format tex_type) - { - BASISU_NOTE_UNUSED(tex_type); - return 4; - } - - bool basis_is_format_supported(transcoder_texture_format tex_type, basis_tex_format fmt) - { - if (fmt == basis_tex_format::cUASTC4x4) - { -#if BASISD_SUPPORT_UASTC - switch (tex_type) - { - // These niche formats aren't currently supported for UASTC - everything else is. - case transcoder_texture_format::cTFPVRTC2_4_RGB: - case transcoder_texture_format::cTFPVRTC2_4_RGBA: - case transcoder_texture_format::cTFATC_RGB: - case transcoder_texture_format::cTFATC_RGBA: - case transcoder_texture_format::cTFFXT1_RGB: - return false; - default: - return true; - } -#endif - } - else - { - switch (tex_type) - { - // ETC1 and uncompressed are always supported. - case transcoder_texture_format::cTFETC1_RGB: - case transcoder_texture_format::cTFRGBA32: - case transcoder_texture_format::cTFRGB565: - case transcoder_texture_format::cTFBGR565: - case transcoder_texture_format::cTFRGBA4444: - return true; -#if BASISD_SUPPORT_DXT1 - case transcoder_texture_format::cTFBC1_RGB: - return true; -#endif -#if BASISD_SUPPORT_DXT5A - case transcoder_texture_format::cTFBC4_R: - case transcoder_texture_format::cTFBC5_RG: - return true; -#endif -#if BASISD_SUPPORT_DXT1 && BASISD_SUPPORT_DXT5A - case transcoder_texture_format::cTFBC3_RGBA: - return true; -#endif -#if BASISD_SUPPORT_PVRTC1 - case transcoder_texture_format::cTFPVRTC1_4_RGB: - case transcoder_texture_format::cTFPVRTC1_4_RGBA: - return true; -#endif -#if BASISD_SUPPORT_BC7_MODE5 - case transcoder_texture_format::cTFBC7_RGBA: - case transcoder_texture_format::cTFBC7_ALT: - return true; -#endif -#if BASISD_SUPPORT_ETC2_EAC_A8 - case transcoder_texture_format::cTFETC2_RGBA: - return true; -#endif -#if BASISD_SUPPORT_ASTC - case transcoder_texture_format::cTFASTC_4x4_RGBA: - return true; -#endif -#if BASISD_SUPPORT_ATC - case transcoder_texture_format::cTFATC_RGB: - case transcoder_texture_format::cTFATC_RGBA: - return true; -#endif -#if BASISD_SUPPORT_FXT1 - case transcoder_texture_format::cTFFXT1_RGB: - return true; -#endif -#if BASISD_SUPPORT_PVRTC2 - case transcoder_texture_format::cTFPVRTC2_4_RGB: - case transcoder_texture_format::cTFPVRTC2_4_RGBA: - return true; -#endif -#if BASISD_SUPPORT_ETC2_EAC_RG11 - case transcoder_texture_format::cTFETC2_EAC_R11: - case transcoder_texture_format::cTFETC2_EAC_RG11: - return true; -#endif - default: - break; - } - } - - return false; - } - - // ------------------------------------------------------------------------------------------------------ - // UASTC - // ------------------------------------------------------------------------------------------------------ - -#if BASISD_SUPPORT_UASTC - const astc_bc7_common_partition2_desc g_astc_bc7_common_partitions2[TOTAL_ASTC_BC7_COMMON_PARTITIONS2] = - { - { 0, 28, false }, { 1, 20, false }, { 2, 16, true }, { 3, 29, false }, - { 4, 91, true }, { 5, 9, false }, { 6, 107, true }, { 7, 72, true }, - { 8, 149, false }, { 9, 204, true }, { 10, 50, false }, { 11, 114, true }, - { 12, 496, true }, { 13, 17, true }, { 14, 78, false }, { 15, 39, true }, - { 17, 252, true }, { 18, 828, true }, { 19, 43, false }, { 20, 156, false }, - { 21, 116, false }, { 22, 210, true }, { 23, 476, true }, { 24, 273, false }, - { 25, 684, true }, { 26, 359, false }, { 29, 246, true }, { 32, 195, true }, - { 33, 694, true }, { 52, 524, true } - }; - - const bc73_astc2_common_partition_desc g_bc7_3_astc2_common_partitions[TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS] = - { - { 10, 36, 4 }, { 11, 48, 4 }, { 0, 61, 3 }, { 2, 137, 4 }, - { 8, 161, 5 }, { 13, 183, 4 }, { 1, 226, 2 }, { 33, 281, 2 }, - { 40, 302, 3 }, { 20, 307, 4 }, { 21, 479, 0 }, { 58, 495, 3 }, - { 3, 593, 0 }, { 32, 594, 2 }, { 59, 605, 1 }, { 34, 799, 3 }, - { 20, 812, 1 }, { 14, 988, 4 }, { 31, 993, 3 } - }; - - const astc_bc7_common_partition3_desc g_astc_bc7_common_partitions3[TOTAL_ASTC_BC7_COMMON_PARTITIONS3] = - { - { 4, 260, 0 }, { 8, 74, 5 }, { 9, 32, 5 }, { 10, 156, 2 }, - { 11, 183, 2 }, { 12, 15, 0 }, { 13, 745, 4 }, { 20, 0, 1 }, - { 35, 335, 1 }, { 36, 902, 5 }, { 57, 254, 0 } - }; - - const uint8_t g_astc_to_bc7_partition_index_perm_tables[6][3] = { { 0, 1, 2 }, { 1, 2, 0 }, { 2, 0, 1 }, { 2, 1, 0 }, { 0, 2, 1 }, { 1, 0, 2 } }; - - const uint8_t g_bc7_to_astc_partition_index_perm_tables[6][3] = { { 0, 1, 2 }, { 2, 0, 1 }, { 1, 2, 0 }, { 2, 1, 0 }, { 0, 2, 1 }, { 1, 0, 2 } }; - - uint32_t bc7_convert_partition_index_3_to_2(uint32_t p, uint32_t k) - { - assert(k < 6); - switch (k >> 1) - { - case 0: - if (p <= 1) - p = 0; - else - p = 1; - break; - case 1: - if (p == 0) - p = 0; - else - p = 1; - break; - case 2: - if ((p == 0) || (p == 2)) - p = 0; - else - p = 1; - break; - } - if (k & 1) - p = 1 - p; - return p; - } - - static const uint8_t g_zero_pattern[16] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; - - const uint8_t g_astc_bc7_patterns2[TOTAL_ASTC_BC7_COMMON_PARTITIONS2][16] = - { - { 0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1 }, { 0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1 }, { 1,0,0,0,1,0,0,0,1,0,0,0,1,0,0,0 }, { 0,0,0,1,0,0,1,1,0,0,1,1,0,1,1,1 }, - { 1,1,1,1,1,1,1,0,1,1,1,0,1,1,0,0 }, { 0,0,1,1,0,1,1,1,0,1,1,1,1,1,1,1 }, { 1,1,1,0,1,1,0,0,1,0,0,0,0,0,0,0 }, { 1,1,1,1,1,1,1,0,1,1,0,0,1,0,0,0 }, - { 0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,1 }, { 1,1,0,0,1,0,0,0,0,0,0,0,0,0,0,0 }, { 0,0,0,0,0,0,0,1,0,1,1,1,1,1,1,1 }, { 1,1,1,1,1,1,1,1,1,1,1,0,1,0,0,0 }, - { 1,1,1,0,1,0,0,0,0,0,0,0,0,0,0,0 }, { 1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0 }, { 0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1 }, { 1,1,1,1,1,1,1,1,1,1,1,1,0,0,0,0 }, - { 1,0,0,0,1,1,1,0,1,1,1,1,1,1,1,1 }, { 1,1,1,1,1,1,1,1,0,1,1,1,0,0,0,1 }, { 0,1,1,1,0,0,1,1,0,0,0,1,0,0,0,0 }, { 0,0,1,1,0,0,0,1,0,0,0,0,0,0,0,0 }, - { 0,0,0,0,1,0,0,0,1,1,0,0,1,1,1,0 }, { 1,1,1,1,1,1,1,1,0,1,1,1,0,0,1,1 }, { 1,0,0,0,1,1,0,0,1,1,0,0,1,1,1,0 }, { 0,0,1,1,0,0,0,1,0,0,0,1,0,0,0,0 }, - { 1,1,1,1,0,1,1,1,0,1,1,1,0,0,1,1 }, { 0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0 }, { 1,1,1,1,0,0,0,0,0,0,0,0,1,1,1,1 }, { 1,0,1,0,1,0,1,0,1,0,1,0,1,0,1,0 }, - { 1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0 }, { 1,0,0,1,0,0,1,1,0,1,1,0,1,1,0,0 } - }; - - const uint8_t g_astc_bc7_patterns3[TOTAL_ASTC_BC7_COMMON_PARTITIONS3][16] = - { - { 0,0,0,0,0,0,0,0,1,1,2,2,1,1,2,2 }, { 1,1,1,1,1,1,1,1,0,0,0,0,2,2,2,2 }, { 1,1,1,1,0,0,0,0,0,0,0,0,2,2,2,2 }, { 1,1,1,1,2,2,2,2,0,0,0,0,0,0,0,0 }, - { 1,1,2,0,1,1,2,0,1,1,2,0,1,1,2,0 }, { 0,1,1,2,0,1,1,2,0,1,1,2,0,1,1,2 }, { 0,2,1,1,0,2,1,1,0,2,1,1,0,2,1,1 }, { 2,0,0,0,2,0,0,0,2,1,1,1,2,1,1,1 }, - { 2,0,1,2,2,0,1,2,2,0,1,2,2,0,1,2 }, { 1,1,1,1,0,0,0,0,2,2,2,2,1,1,1,1 }, { 0,0,2,2,0,0,1,1,0,0,1,1,0,0,2,2 } - }; - - const uint8_t g_bc7_3_astc2_patterns2[TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS][16] = - { - { 0,0,0,0,1,1,1,1,0,0,0,0,0,0,0,0 }, { 0,0,1,0,0,0,1,0,0,0,1,0,0,0,1,0 }, { 1,1,0,0,1,1,0,0,1,0,0,0,0,0,0,0 }, { 0,0,0,0,0,0,0,1,0,0,1,1,0,0,1,1 }, - { 1,1,1,1,1,1,1,1,0,0,0,0,1,1,1,1 }, { 0,1,0,0,0,1,0,0,0,1,0,0,0,1,0,0 }, { 0,0,0,1,0,0,1,1,1,1,1,1,1,1,1,1 }, { 0,1,1,1,0,0,1,1,0,0,1,1,0,0,1,1 }, - { 1,1,0,0,0,0,0,0,0,0,1,1,1,1,0,0 }, { 0,1,1,1,0,1,1,1,0,0,0,0,0,0,0,0 }, { 0,0,0,0,0,0,0,0,1,1,1,0,1,1,1,0 }, { 1,1,0,0,0,0,0,0,0,0,0,0,1,1,0,0 }, - { 0,1,1,1,0,0,1,1,0,0,0,0,0,0,0,0 }, { 0,0,0,0,0,0,0,1,1,1,1,1,1,1,1,1 }, { 1,1,1,1,1,1,1,1,1,1,1,1,0,1,1,0 }, { 1,1,0,0,1,1,0,0,1,1,0,0,1,0,0,0 }, - { 1,1,1,1,1,1,1,1,1,0,0,0,1,0,0,0 }, { 0,0,1,1,0,1,1,0,1,1,0,0,1,0,0,0 }, { 1,1,1,1,0,1,1,1,0,0,0,0,0,0,0,0 } - }; - - const uint8_t g_astc_bc7_pattern2_anchors[TOTAL_ASTC_BC7_COMMON_PARTITIONS2][3] = - { - { 0, 2 }, { 0, 3 }, { 1, 0 }, { 0, 3 }, { 7, 0 }, { 0, 2 }, { 3, 0 }, { 7, 0 }, - { 0, 11 }, { 2, 0 }, { 0, 7 }, { 11, 0 }, { 3, 0 }, { 8, 0 }, { 0, 4 }, { 12, 0 }, - { 1, 0 }, { 8, 0 }, { 0, 1 }, { 0, 2 }, { 0, 4 }, { 8, 0 }, { 1, 0 }, { 0, 2 }, - { 4, 0 }, { 0, 1 }, { 4, 0 }, { 1, 0 }, { 4, 0 }, { 1, 0 } - }; - - const uint8_t g_astc_bc7_pattern3_anchors[TOTAL_ASTC_BC7_COMMON_PARTITIONS3][3] = - { - { 0, 8, 10 }, { 8, 0, 12 }, { 4, 0, 12 }, { 8, 0, 4 }, { 3, 0, 2 }, { 0, 1, 3 }, { 0, 2, 1 }, { 1, 9, 0 }, { 1, 2, 0 }, { 4, 0, 8 }, { 0, 6, 2 } - }; - - const uint8_t g_bc7_3_astc2_patterns2_anchors[TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS][3] = - { - { 0, 4 }, { 0, 2 }, { 2, 0 }, { 0, 7 }, { 8, 0 }, { 0, 1 }, { 0, 3 }, { 0, 1 }, { 2, 0 }, { 0, 1 }, { 0, 8 }, { 2, 0 }, { 0, 1 }, { 0, 7 }, { 12, 0 }, { 2, 0 }, { 9, 0 }, { 0, 2 }, { 4, 0 } - }; - - const uint32_t g_uastc_mode_huff_codes[TOTAL_UASTC_MODES + 1][2] = - { - { 0x1, 4 }, - { 0x35, 6 }, - { 0x1D, 5 }, - { 0x3, 5 }, - - { 0x13, 5 }, - { 0xB, 5 }, - { 0x1B, 5 }, - { 0x7, 5 }, - - { 0x17, 5 }, - { 0xF, 5 }, - { 0x2, 3 }, - { 0x0, 2 }, - - { 0x6, 3 }, - { 0x1F, 5 }, - { 0xD, 5 }, - { 0x5, 7 }, - - { 0x15, 6 }, - { 0x25, 6 }, - { 0x9, 4 }, - { 0x45, 7 } // future expansion - }; - - // If g_uastc_mode_huff_codes[] changes this table must be updated! - static const uint8_t g_uastc_huff_modes[128] = - { - 11,0,10,3,11,15,12,7,11,18,10,5,11,14,12,9,11,0,10,4,11,16,12,8,11,18,10,6,11,2,12,13,11,0,10,3,11,17,12,7,11,18,10,5,11,14,12,9,11,0,10,4,11,1,12,8,11,18,10,6,11,2,12,13,11,0,10,3,11, - 19,12,7,11,18,10,5,11,14,12,9,11,0,10,4,11,16,12,8,11,18,10,6,11,2,12,13,11,0,10,3,11,17,12,7,11,18,10,5,11,14,12,9,11,0,10,4,11,1,12,8,11,18,10,6,11,2,12,13 - }; - - const uint8_t g_uastc_mode_weight_bits[TOTAL_UASTC_MODES] = { 4, 2, 3, 2, 2, 3, 2, 2, 0, 2, 4, 2, 3, 1, 2, 4, 2, 2, 5 }; - const uint8_t g_uastc_mode_weight_ranges[TOTAL_UASTC_MODES] = { 8, 2, 5, 2, 2, 5, 2, 2, 0, 2, 8, 2, 5, 0, 2, 8, 2, 2, 11 }; - const uint8_t g_uastc_mode_endpoint_ranges[TOTAL_UASTC_MODES] = { 19, 20, 8, 7, 12, 20, 18, 12, 0, 8, 13, 13, 19, 20, 20, 20, 20, 20, 11 }; - const uint8_t g_uastc_mode_subsets[TOTAL_UASTC_MODES] = { 1, 1, 2, 3, 2, 1, 1, 2, 0, 2, 1, 1, 1, 1, 1, 1, 2, 1, 1 }; - const uint8_t g_uastc_mode_planes[TOTAL_UASTC_MODES] = { 1, 1, 1, 1, 1, 1, 2, 1, 0, 1, 1, 2, 1, 2, 1, 1, 1, 2, 1 }; - const uint8_t g_uastc_mode_comps[TOTAL_UASTC_MODES] = { 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 3 }; - const uint8_t g_uastc_mode_has_etc1_bias[TOTAL_UASTC_MODES] = { 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1 }; - const uint8_t g_uastc_mode_has_bc1_hint0[TOTAL_UASTC_MODES] = { 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 }; - const uint8_t g_uastc_mode_has_bc1_hint1[TOTAL_UASTC_MODES] = { 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 1, 1, 1, 1 }; - const uint8_t g_uastc_mode_cem[TOTAL_UASTC_MODES] = { 8, 8, 8, 8, 8, 8, 8, 8, 0, 12, 12, 12, 12, 12, 12, 4, 4, 4, 8 }; - const uint8_t g_uastc_mode_has_alpha[TOTAL_UASTC_MODES] = { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0 }; - const uint8_t g_uastc_mode_is_la[TOTAL_UASTC_MODES] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 0 }; - const uint8_t g_uastc_mode_total_hint_bits[TOTAL_UASTC_MODES] = { 15, 15, 15, 15, 15, 15, 15, 15, 0, 23, 17, 17, 17, 23, 23, 23, 23, 23, 15 }; - - // bits, trits, quints - const int g_astc_bise_range_table[TOTAL_ASTC_RANGES][3] = - { - { 1, 0, 0 }, // 0-1 0 - { 0, 1, 0 }, // 0-2 1 - { 2, 0, 0 }, // 0-3 2 - { 0, 0, 1 }, // 0-4 3 - - { 1, 1, 0 }, // 0-5 4 - { 3, 0, 0 }, // 0-7 5 - { 1, 0, 1 }, // 0-9 6 - { 2, 1, 0 }, // 0-11 7 - - { 4, 0, 0 }, // 0-15 8 - { 2, 0, 1 }, // 0-19 9 - { 3, 1, 0 }, // 0-23 10 - { 5, 0, 0 }, // 0-31 11 - - { 3, 0, 1 }, // 0-39 12 - { 4, 1, 0 }, // 0-47 13 - { 6, 0, 0 }, // 0-63 14 - { 4, 0, 1 }, // 0-79 15 - - { 5, 1, 0 }, // 0-95 16 - { 7, 0, 0 }, // 0-127 17 - { 5, 0, 1 }, // 0-159 18 - { 6, 1, 0 }, // 0-191 19 - - { 8, 0, 0 }, // 0-255 20 - }; - - int astc_get_levels(int range) - { - assert(range < (int)BC7ENC_TOTAL_ASTC_RANGES); - return (1 + 2 * g_astc_bise_range_table[range][1] + 4 * g_astc_bise_range_table[range][2]) << g_astc_bise_range_table[range][0]; - } - - // g_astc_unquant[] is the inverse of g_astc_sorted_order_unquant[] - astc_quant_bin g_astc_unquant[BC7ENC_TOTAL_ASTC_RANGES][256]; // [ASTC encoded endpoint index] - - // Taken right from the ASTC spec. - static struct - { - const char* m_pB_str; - uint32_t m_c; - } g_astc_endpoint_unquant_params[BC7ENC_TOTAL_ASTC_RANGES] = - { - { "", 0 }, - { "", 0 }, - { "", 0 }, - { "", 0 }, - { "000000000", 204, }, // 0-5 - { "", 0 }, - { "000000000", 113, }, // 0-9 - { "b000b0bb0", 93 }, // 0-11 - { "", 0 }, - { "b0000bb00", 54 }, // 0-19 - { "cb000cbcb", 44 }, // 0-23 - { "", 0 }, - { "cb0000cbc", 26 }, // 0-39 - { "dcb000dcb", 22 }, // 0-47 - { "", 0 }, - { "dcb0000dc", 13 }, // 0-79 - { "edcb000ed", 11 }, // 0-95 - { "", 0 }, - { "edcb0000e", 6 }, // 0-159 - { "fedcb000f", 5 }, // 0-191 - { "", 0 }, - }; - - bool astc_is_valid_endpoint_range(uint32_t range) - { - if ((g_astc_bise_range_table[range][1] == 0) && (g_astc_bise_range_table[range][2] == 0)) - return true; - - return g_astc_endpoint_unquant_params[range].m_c != 0; - } - - uint32_t unquant_astc_endpoint(uint32_t packed_bits, uint32_t packed_trits, uint32_t packed_quints, uint32_t range) - { - assert(range < BC7ENC_TOTAL_ASTC_RANGES); - - const uint32_t bits = g_astc_bise_range_table[range][0]; - const uint32_t trits = g_astc_bise_range_table[range][1]; - const uint32_t quints = g_astc_bise_range_table[range][2]; - - uint32_t val = 0; - if ((!trits) && (!quints)) - { - assert(!packed_trits && !packed_quints); - - int bits_left = 8; - while (bits_left > 0) - { - uint32_t v = packed_bits; - - int n = basisu::minimumi(bits_left, bits); - if (n < (int)bits) - v >>= (bits - n); - - assert(v < (1U << n)); - - val |= (v << (bits_left - n)); - bits_left -= n; - } - } - else - { - const uint32_t A = (packed_bits & 1) ? 511 : 0; - const uint32_t C = g_astc_endpoint_unquant_params[range].m_c; - const uint32_t D = trits ? packed_trits : packed_quints; - - assert(C); - - uint32_t B = 0; - for (uint32_t i = 0; i < 9; i++) - { - B <<= 1; - - char c = g_astc_endpoint_unquant_params[range].m_pB_str[i]; - if (c != '0') - { - c -= 'a'; - B |= ((packed_bits >> c) & 1); - } - } - - val = D * C + B; - val = val ^ A; - val = (A & 0x80) | (val >> 2); - } - - return val; - } - - uint32_t unquant_astc_endpoint_val(uint32_t packed_val, uint32_t range) - { - assert(range < BC7ENC_TOTAL_ASTC_RANGES); - assert(packed_val < (uint32_t)astc_get_levels(range)); - - const uint32_t bits = g_astc_bise_range_table[range][0]; - const uint32_t trits = g_astc_bise_range_table[range][1]; - const uint32_t quints = g_astc_bise_range_table[range][2]; - - if ((!trits) && (!quints)) - return unquant_astc_endpoint(packed_val, 0, 0, range); - else if (trits) - return unquant_astc_endpoint(packed_val & ((1 << bits) - 1), packed_val >> bits, 0, range); - else - return unquant_astc_endpoint(packed_val & ((1 << bits) - 1), 0, packed_val >> bits, range); - } - - // BC7 - Various BC7 tables/helpers - const uint32_t g_bc7_weights1[2] = { 0, 64 }; - const uint32_t g_bc7_weights2[4] = { 0, 21, 43, 64 }; - const uint32_t g_bc7_weights3[8] = { 0, 9, 18, 27, 37, 46, 55, 64 }; - const uint32_t g_bc7_weights4[16] = { 0, 4, 9, 13, 17, 21, 26, 30, 34, 38, 43, 47, 51, 55, 60, 64 }; - const uint32_t g_astc_weights4[16] = { 0, 4, 8, 12, 17, 21, 25, 29, 35, 39, 43, 47, 52, 56, 60, 64 }; - const uint32_t g_astc_weights5[32] = { 0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64 }; - const uint32_t g_astc_weights_3levels[3] = { 0, 32, 64 }; - - const uint8_t g_bc7_partition1[16] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }; - - const uint8_t g_bc7_partition2[64 * 16] = - { - 0,0,1,1,0,0,1,1,0,0,1,1,0,0,1,1, 0,0,0,1,0,0,0,1,0,0,0,1,0,0,0,1, 0,1,1,1,0,1,1,1,0,1,1,1,0,1,1,1, 0,0,0,1,0,0,1,1,0,0,1,1,0,1,1,1, 0,0,0,0,0,0,0,1,0,0,0,1,0,0,1,1, 0,0,1,1,0,1,1,1,0,1,1,1,1,1,1,1, 0,0,0,1,0,0,1,1,0,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,1,0,0,1,1,0,1,1,1, - 0,0,0,0,0,0,0,0,0,0,0,1,0,0,1,1, 0,0,1,1,0,1,1,1,1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,1,0,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0,0,0,0,1,0,1,1,1, 0,0,0,1,0,1,1,1,1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0,1,1,1,1,1,1,1,1, 0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1, 0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1, - 0,0,0,0,1,0,0,0,1,1,1,0,1,1,1,1, 0,1,1,1,0,0,0,1,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,1,0,0,0,1,1,1,0, 0,1,1,1,0,0,1,1,0,0,0,1,0,0,0,0, 0,0,1,1,0,0,0,1,0,0,0,0,0,0,0,0, 0,0,0,0,1,0,0,0,1,1,0,0,1,1,1,0, 0,0,0,0,0,0,0,0,1,0,0,0,1,1,0,0, 0,1,1,1,0,0,1,1,0,0,1,1,0,0,0,1, - 0,0,1,1,0,0,0,1,0,0,0,1,0,0,0,0, 0,0,0,0,1,0,0,0,1,0,0,0,1,1,0,0, 0,1,1,0,0,1,1,0,0,1,1,0,0,1,1,0, 0,0,1,1,0,1,1,0,0,1,1,0,1,1,0,0, 0,0,0,1,0,1,1,1,1,1,1,0,1,0,0,0, 0,0,0,0,1,1,1,1,1,1,1,1,0,0,0,0, 0,1,1,1,0,0,0,1,1,0,0,0,1,1,1,0, 0,0,1,1,1,0,0,1,1,0,0,1,1,1,0,0, - 0,1,0,1,0,1,0,1,0,1,0,1,0,1,0,1, 0,0,0,0,1,1,1,1,0,0,0,0,1,1,1,1, 0,1,0,1,1,0,1,0,0,1,0,1,1,0,1,0, 0,0,1,1,0,0,1,1,1,1,0,0,1,1,0,0, 0,0,1,1,1,1,0,0,0,0,1,1,1,1,0,0, 0,1,0,1,0,1,0,1,1,0,1,0,1,0,1,0, 0,1,1,0,1,0,0,1,0,1,1,0,1,0,0,1, 0,1,0,1,1,0,1,0,1,0,1,0,0,1,0,1, - 0,1,1,1,0,0,1,1,1,1,0,0,1,1,1,0, 0,0,0,1,0,0,1,1,1,1,0,0,1,0,0,0, 0,0,1,1,0,0,1,0,0,1,0,0,1,1,0,0, 0,0,1,1,1,0,1,1,1,1,0,1,1,1,0,0, 0,1,1,0,1,0,0,1,1,0,0,1,0,1,1,0, 0,0,1,1,1,1,0,0,1,1,0,0,0,0,1,1, 0,1,1,0,0,1,1,0,1,0,0,1,1,0,0,1, 0,0,0,0,0,1,1,0,0,1,1,0,0,0,0,0, - 0,1,0,0,1,1,1,0,0,1,0,0,0,0,0,0, 0,0,1,0,0,1,1,1,0,0,1,0,0,0,0,0, 0,0,0,0,0,0,1,0,0,1,1,1,0,0,1,0, 0,0,0,0,0,1,0,0,1,1,1,0,0,1,0,0, 0,1,1,0,1,1,0,0,1,0,0,1,0,0,1,1, 0,0,1,1,0,1,1,0,1,1,0,0,1,0,0,1, 0,1,1,0,0,0,1,1,1,0,0,1,1,1,0,0, 0,0,1,1,1,0,0,1,1,1,0,0,0,1,1,0, - 0,1,1,0,1,1,0,0,1,1,0,0,1,0,0,1, 0,1,1,0,0,0,1,1,0,0,1,1,1,0,0,1, 0,1,1,1,1,1,1,0,1,0,0,0,0,0,0,1, 0,0,0,1,1,0,0,0,1,1,1,0,0,1,1,1, 0,0,0,0,1,1,1,1,0,0,1,1,0,0,1,1, 0,0,1,1,0,0,1,1,1,1,1,1,0,0,0,0, 0,0,1,0,0,0,1,0,1,1,1,0,1,1,1,0, 0,1,0,0,0,1,0,0,0,1,1,1,0,1,1,1 - }; - - const uint8_t g_bc7_partition3[64 * 16] = - { - 0,0,1,1,0,0,1,1,0,2,2,1,2,2,2,2, 0,0,0,1,0,0,1,1,2,2,1,1,2,2,2,1, 0,0,0,0,2,0,0,1,2,2,1,1,2,2,1,1, 0,2,2,2,0,0,2,2,0,0,1,1,0,1,1,1, 0,0,0,0,0,0,0,0,1,1,2,2,1,1,2,2, 0,0,1,1,0,0,1,1,0,0,2,2,0,0,2,2, 0,0,2,2,0,0,2,2,1,1,1,1,1,1,1,1, 0,0,1,1,0,0,1,1,2,2,1,1,2,2,1,1, - 0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2, 0,0,0,0,1,1,1,1,1,1,1,1,2,2,2,2, 0,0,0,0,1,1,1,1,2,2,2,2,2,2,2,2, 0,0,1,2,0,0,1,2,0,0,1,2,0,0,1,2, 0,1,1,2,0,1,1,2,0,1,1,2,0,1,1,2, 0,1,2,2,0,1,2,2,0,1,2,2,0,1,2,2, 0,0,1,1,0,1,1,2,1,1,2,2,1,2,2,2, 0,0,1,1,2,0,0,1,2,2,0,0,2,2,2,0, - 0,0,0,1,0,0,1,1,0,1,1,2,1,1,2,2, 0,1,1,1,0,0,1,1,2,0,0,1,2,2,0,0, 0,0,0,0,1,1,2,2,1,1,2,2,1,1,2,2, 0,0,2,2,0,0,2,2,0,0,2,2,1,1,1,1, 0,1,1,1,0,1,1,1,0,2,2,2,0,2,2,2, 0,0,0,1,0,0,0,1,2,2,2,1,2,2,2,1, 0,0,0,0,0,0,1,1,0,1,2,2,0,1,2,2, 0,0,0,0,1,1,0,0,2,2,1,0,2,2,1,0, - 0,1,2,2,0,1,2,2,0,0,1,1,0,0,0,0, 0,0,1,2,0,0,1,2,1,1,2,2,2,2,2,2, 0,1,1,0,1,2,2,1,1,2,2,1,0,1,1,0, 0,0,0,0,0,1,1,0,1,2,2,1,1,2,2,1, 0,0,2,2,1,1,0,2,1,1,0,2,0,0,2,2, 0,1,1,0,0,1,1,0,2,0,0,2,2,2,2,2, 0,0,1,1,0,1,2,2,0,1,2,2,0,0,1,1, 0,0,0,0,2,0,0,0,2,2,1,1,2,2,2,1, - 0,0,0,0,0,0,0,2,1,1,2,2,1,2,2,2, 0,2,2,2,0,0,2,2,0,0,1,2,0,0,1,1, 0,0,1,1,0,0,1,2,0,0,2,2,0,2,2,2, 0,1,2,0,0,1,2,0,0,1,2,0,0,1,2,0, 0,0,0,0,1,1,1,1,2,2,2,2,0,0,0,0, 0,1,2,0,1,2,0,1,2,0,1,2,0,1,2,0, 0,1,2,0,2,0,1,2,1,2,0,1,0,1,2,0, 0,0,1,1,2,2,0,0,1,1,2,2,0,0,1,1, - 0,0,1,1,1,1,2,2,2,2,0,0,0,0,1,1, 0,1,0,1,0,1,0,1,2,2,2,2,2,2,2,2, 0,0,0,0,0,0,0,0,2,1,2,1,2,1,2,1, 0,0,2,2,1,1,2,2,0,0,2,2,1,1,2,2, 0,0,2,2,0,0,1,1,0,0,2,2,0,0,1,1, 0,2,2,0,1,2,2,1,0,2,2,0,1,2,2,1, 0,1,0,1,2,2,2,2,2,2,2,2,0,1,0,1, 0,0,0,0,2,1,2,1,2,1,2,1,2,1,2,1, - 0,1,0,1,0,1,0,1,0,1,0,1,2,2,2,2, 0,2,2,2,0,1,1,1,0,2,2,2,0,1,1,1, 0,0,0,2,1,1,1,2,0,0,0,2,1,1,1,2, 0,0,0,0,2,1,1,2,2,1,1,2,2,1,1,2, 0,2,2,2,0,1,1,1,0,1,1,1,0,2,2,2, 0,0,0,2,1,1,1,2,1,1,1,2,0,0,0,2, 0,1,1,0,0,1,1,0,0,1,1,0,2,2,2,2, 0,0,0,0,0,0,0,0,2,1,1,2,2,1,1,2, - 0,1,1,0,0,1,1,0,2,2,2,2,2,2,2,2, 0,0,2,2,0,0,1,1,0,0,1,1,0,0,2,2, 0,0,2,2,1,1,2,2,1,1,2,2,0,0,2,2, 0,0,0,0,0,0,0,0,0,0,0,0,2,1,1,2, 0,0,0,2,0,0,0,1,0,0,0,2,0,0,0,1, 0,2,2,2,1,2,2,2,0,2,2,2,1,2,2,2, 0,1,0,1,2,2,2,2,2,2,2,2,2,2,2,2, 0,1,1,1,2,0,1,1,2,2,0,1,2,2,2,0, - }; - - const uint8_t g_bc7_table_anchor_index_second_subset[64] = { 15,15,15,15,15,15,15,15, 15,15,15,15,15,15,15,15, 15, 2, 8, 2, 2, 8, 8,15, 2, 8, 2, 2, 8, 8, 2, 2, 15,15, 6, 8, 2, 8,15,15, 2, 8, 2, 2, 2,15,15, 6, 6, 2, 6, 8,15,15, 2, 2, 15,15,15,15,15, 2, 2,15 }; - - const uint8_t g_bc7_table_anchor_index_third_subset_1[64] = - { - 3, 3,15,15, 8, 3,15,15, 8, 8, 6, 6, 6, 5, 3, 3, 3, 3, 8,15, 3, 3, 6,10, 5, 8, 8, 6, 8, 5,15,15, 8,15, 3, 5, 6,10, 8,15, 15, 3,15, 5,15,15,15,15, 3,15, 5, 5, 5, 8, 5,10, 5,10, 8,13,15,12, 3, 3 - }; - - const uint8_t g_bc7_table_anchor_index_third_subset_2[64] = - { - 15, 8, 8, 3,15,15, 3, 8, 15,15,15,15,15,15,15, 8, 15, 8,15, 3,15, 8,15, 8, 3,15, 6,10,15,15,10, 8, 15, 3,15,10,10, 8, 9,10, 6,15, 8,15, 3, 6, 6, 8, 15, 3,15,15,15,15,15,15, 15,15,15,15, 3,15,15, 8 - }; - - const uint8_t g_bc7_num_subsets[8] = { 3, 2, 3, 2, 1, 1, 1, 2 }; - const uint8_t g_bc7_partition_bits[8] = { 4, 6, 6, 6, 0, 0, 0, 6 }; - const uint8_t g_bc7_color_index_bitcount[8] = { 3, 3, 2, 2, 2, 2, 4, 2 }; - - const uint8_t g_bc7_mode_has_p_bits[8] = { 1, 1, 0, 1, 0, 0, 1, 1 }; - const uint8_t g_bc7_mode_has_shared_p_bits[8] = { 0, 1, 0, 0, 0, 0, 0, 0 }; - const uint8_t g_bc7_color_precision_table[8] = { 4, 6, 5, 7, 5, 7, 7, 5 }; - const int8_t g_bc7_alpha_precision_table[8] = { 0, 0, 0, 0, 6, 8, 7, 5 }; - - const uint8_t g_bc7_alpha_index_bitcount[8] = { 0, 0, 0, 0, 3, 2, 4, 2 }; - - endpoint_err g_bc7_mode_6_optimal_endpoints[256][2]; // [c][pbit] - endpoint_err g_bc7_mode_5_optimal_endpoints[256]; // [c] - - static inline void bc7_set_block_bits(uint8_t* pBytes, uint32_t val, uint32_t num_bits, uint32_t* pCur_ofs) - { - assert((num_bits <= 32) && (val < (1ULL << num_bits))); - while (num_bits) - { - const uint32_t n = basisu::minimumu(8 - (*pCur_ofs & 7), num_bits); - pBytes[*pCur_ofs >> 3] |= (uint8_t)(val << (*pCur_ofs & 7)); - val >>= n; - num_bits -= n; - *pCur_ofs += n; - } - assert(*pCur_ofs <= 128); - } - - // TODO: Optimize this. - void encode_bc7_block(void* pBlock, const bc7_optimization_results* pResults) - { - const uint32_t best_mode = pResults->m_mode; - - const uint32_t total_subsets = g_bc7_num_subsets[best_mode]; - const uint32_t total_partitions = 1 << g_bc7_partition_bits[best_mode]; - //const uint32_t num_rotations = 1 << g_bc7_rotation_bits[best_mode]; - //const uint32_t num_index_selectors = (best_mode == 4) ? 2 : 1; - - const uint8_t* pPartition; - if (total_subsets == 1) - pPartition = &g_bc7_partition1[0]; - else if (total_subsets == 2) - pPartition = &g_bc7_partition2[pResults->m_partition * 16]; - else - pPartition = &g_bc7_partition3[pResults->m_partition * 16]; - - uint8_t color_selectors[16]; - memcpy(color_selectors, pResults->m_selectors, 16); - - uint8_t alpha_selectors[16]; - memcpy(alpha_selectors, pResults->m_alpha_selectors, 16); - - color_quad_u8 low[3], high[3]; - memcpy(low, pResults->m_low, sizeof(low)); - memcpy(high, pResults->m_high, sizeof(high)); - - uint32_t pbits[3][2]; - memcpy(pbits, pResults->m_pbits, sizeof(pbits)); - - int anchor[3] = { -1, -1, -1 }; - - for (uint32_t k = 0; k < total_subsets; k++) - { - uint32_t anchor_index = 0; - if (k) - { - if ((total_subsets == 3) && (k == 1)) - anchor_index = g_bc7_table_anchor_index_third_subset_1[pResults->m_partition]; - else if ((total_subsets == 3) && (k == 2)) - anchor_index = g_bc7_table_anchor_index_third_subset_2[pResults->m_partition]; - else - anchor_index = g_bc7_table_anchor_index_second_subset[pResults->m_partition]; - } - - anchor[k] = anchor_index; - - const uint32_t color_index_bits = get_bc7_color_index_size(best_mode, pResults->m_index_selector); - const uint32_t num_color_indices = 1 << color_index_bits; - - if (color_selectors[anchor_index] & (num_color_indices >> 1)) - { - for (uint32_t i = 0; i < 16; i++) - if (pPartition[i] == k) - color_selectors[i] = (uint8_t)((num_color_indices - 1) - color_selectors[i]); - - if (get_bc7_mode_has_seperate_alpha_selectors(best_mode)) - { - for (uint32_t q = 0; q < 3; q++) - { - uint8_t t = low[k].m_c[q]; - low[k].m_c[q] = high[k].m_c[q]; - high[k].m_c[q] = t; - } - } - else - { - color_quad_u8 tmp = low[k]; - low[k] = high[k]; - high[k] = tmp; - } - - if (!g_bc7_mode_has_shared_p_bits[best_mode]) - { - uint32_t t = pbits[k][0]; - pbits[k][0] = pbits[k][1]; - pbits[k][1] = t; - } - } - - if (get_bc7_mode_has_seperate_alpha_selectors(best_mode)) - { - const uint32_t alpha_index_bits = get_bc7_alpha_index_size(best_mode, pResults->m_index_selector); - const uint32_t num_alpha_indices = 1 << alpha_index_bits; - - if (alpha_selectors[anchor_index] & (num_alpha_indices >> 1)) - { - for (uint32_t i = 0; i < 16; i++) - if (pPartition[i] == k) - alpha_selectors[i] = (uint8_t)((num_alpha_indices - 1) - alpha_selectors[i]); - - uint8_t t = low[k].m_c[3]; - low[k].m_c[3] = high[k].m_c[3]; - high[k].m_c[3] = t; - } - } - } - - uint8_t* pBlock_bytes = (uint8_t*)(pBlock); - memset(pBlock_bytes, 0, BC7ENC_BLOCK_SIZE); - - uint32_t cur_bit_ofs = 0; - bc7_set_block_bits(pBlock_bytes, 1 << best_mode, best_mode + 1, &cur_bit_ofs); - - if ((best_mode == 4) || (best_mode == 5)) - bc7_set_block_bits(pBlock_bytes, pResults->m_rotation, 2, &cur_bit_ofs); - - if (best_mode == 4) - bc7_set_block_bits(pBlock_bytes, pResults->m_index_selector, 1, &cur_bit_ofs); - - if (total_partitions > 1) - bc7_set_block_bits(pBlock_bytes, pResults->m_partition, (total_partitions == 64) ? 6 : 4, &cur_bit_ofs); - - const uint32_t total_comps = (best_mode >= 4) ? 4 : 3; - for (uint32_t comp = 0; comp < total_comps; comp++) - { - for (uint32_t subset = 0; subset < total_subsets; subset++) - { - bc7_set_block_bits(pBlock_bytes, low[subset].m_c[comp], (comp == 3) ? g_bc7_alpha_precision_table[best_mode] : g_bc7_color_precision_table[best_mode], &cur_bit_ofs); - bc7_set_block_bits(pBlock_bytes, high[subset].m_c[comp], (comp == 3) ? g_bc7_alpha_precision_table[best_mode] : g_bc7_color_precision_table[best_mode], &cur_bit_ofs); - } - } - - if (g_bc7_mode_has_p_bits[best_mode]) - { - for (uint32_t subset = 0; subset < total_subsets; subset++) - { - bc7_set_block_bits(pBlock_bytes, pbits[subset][0], 1, &cur_bit_ofs); - if (!g_bc7_mode_has_shared_p_bits[best_mode]) - bc7_set_block_bits(pBlock_bytes, pbits[subset][1], 1, &cur_bit_ofs); - } - } - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - int idx = x + y * 4; - - uint32_t n = pResults->m_index_selector ? get_bc7_alpha_index_size(best_mode, pResults->m_index_selector) : get_bc7_color_index_size(best_mode, pResults->m_index_selector); - - if ((idx == anchor[0]) || (idx == anchor[1]) || (idx == anchor[2])) - n--; - - bc7_set_block_bits(pBlock_bytes, pResults->m_index_selector ? alpha_selectors[idx] : color_selectors[idx], n, &cur_bit_ofs); - } - } - - if (get_bc7_mode_has_seperate_alpha_selectors(best_mode)) - { - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - int idx = x + y * 4; - - uint32_t n = pResults->m_index_selector ? get_bc7_color_index_size(best_mode, pResults->m_index_selector) : get_bc7_alpha_index_size(best_mode, pResults->m_index_selector); - - if ((idx == anchor[0]) || (idx == anchor[1]) || (idx == anchor[2])) - n--; - - bc7_set_block_bits(pBlock_bytes, pResults->m_index_selector ? color_selectors[idx] : alpha_selectors[idx], n, &cur_bit_ofs); - } - } - } - - assert(cur_bit_ofs == 128); - } - - // ASTC - static inline void astc_set_bits_1_to_9(uint32_t* pDst, int& bit_offset, uint32_t code, uint32_t codesize) - { - uint8_t* pBuf = reinterpret_cast(pDst); - - assert(codesize <= 9); - if (codesize) - { - uint32_t byte_bit_offset = bit_offset & 7; - uint32_t val = code << byte_bit_offset; - - uint32_t index = bit_offset >> 3; - pBuf[index] |= (uint8_t)val; - - if (codesize > (8 - byte_bit_offset)) - pBuf[index + 1] |= (uint8_t)(val >> 8); - - bit_offset += codesize; - } - } - - void pack_astc_solid_block(void* pDst_block, const color32& color) - { - uint32_t r = color[0], g = color[1], b = color[2]; - uint32_t a = color[3]; - - uint32_t* pOutput = static_cast(pDst_block); - uint8_t* pBytes = reinterpret_cast(pDst_block); - - pBytes[0] = 0xfc; pBytes[1] = 0xfd; pBytes[2] = 0xff; pBytes[3] = 0xff; - - pOutput[1] = 0xffffffff; - pOutput[2] = 0; - pOutput[3] = 0; - - int bit_pos = 64; - astc_set_bits(reinterpret_cast(pDst_block), bit_pos, r | (r << 8), 16); - astc_set_bits(reinterpret_cast(pDst_block), bit_pos, g | (g << 8), 16); - astc_set_bits(reinterpret_cast(pDst_block), bit_pos, b | (b << 8), 16); - astc_set_bits(reinterpret_cast(pDst_block), bit_pos, a | (a << 8), 16); - } - - // See 23.21 https://www.khronos.org/registry/DataFormat/specs/1.3/dataformat.1.3.inline.html#_partition_pattern_generation -#ifdef _DEBUG - static inline uint32_t astc_hash52(uint32_t v) - { - uint32_t p = v; - p ^= p >> 15; p -= p << 17; p += p << 7; p += p << 4; - p ^= p >> 5; p += p << 16; p ^= p >> 7; p ^= p >> 3; - p ^= p << 6; p ^= p >> 17; - return p; - } - - int astc_compute_texel_partition(int seed, int x, int y, int z, int partitioncount, bool small_block) - { - if (small_block) - { - x <<= 1; y <<= 1; z <<= 1; - } - seed += (partitioncount - 1) * 1024; - uint32_t rnum = astc_hash52(seed); - uint8_t seed1 = rnum & 0xF; - uint8_t seed2 = (rnum >> 4) & 0xF; - uint8_t seed3 = (rnum >> 8) & 0xF; - uint8_t seed4 = (rnum >> 12) & 0xF; - uint8_t seed5 = (rnum >> 16) & 0xF; - uint8_t seed6 = (rnum >> 20) & 0xF; - uint8_t seed7 = (rnum >> 24) & 0xF; - uint8_t seed8 = (rnum >> 28) & 0xF; - uint8_t seed9 = (rnum >> 18) & 0xF; - uint8_t seed10 = (rnum >> 22) & 0xF; - uint8_t seed11 = (rnum >> 26) & 0xF; - uint8_t seed12 = ((rnum >> 30) | (rnum << 2)) & 0xF; - - seed1 *= seed1; seed2 *= seed2; - seed3 *= seed3; seed4 *= seed4; - seed5 *= seed5; seed6 *= seed6; - seed7 *= seed7; seed8 *= seed8; - seed9 *= seed9; seed10 *= seed10; - seed11 *= seed11; seed12 *= seed12; - - int sh1, sh2, sh3; - if (seed & 1) - { - sh1 = (seed & 2 ? 4 : 5); sh2 = (partitioncount == 3 ? 6 : 5); - } - else - { - sh1 = (partitioncount == 3 ? 6 : 5); sh2 = (seed & 2 ? 4 : 5); - } - sh3 = (seed & 0x10) ? sh1 : sh2; - - seed1 >>= sh1; seed2 >>= sh2; seed3 >>= sh1; seed4 >>= sh2; - seed5 >>= sh1; seed6 >>= sh2; seed7 >>= sh1; seed8 >>= sh2; - seed9 >>= sh3; seed10 >>= sh3; seed11 >>= sh3; seed12 >>= sh3; - - int a = seed1 * x + seed2 * y + seed11 * z + (rnum >> 14); - int b = seed3 * x + seed4 * y + seed12 * z + (rnum >> 10); - int c = seed5 * x + seed6 * y + seed9 * z + (rnum >> 6); - int d = seed7 * x + seed8 * y + seed10 * z + (rnum >> 2); - - a &= 0x3F; b &= 0x3F; c &= 0x3F; d &= 0x3F; - - if (partitioncount < 4) d = 0; - if (partitioncount < 3) c = 0; - - if (a >= b && a >= c && a >= d) - return 0; - else if (b >= c && b >= d) - return 1; - else if (c >= d) - return 2; - else - return 3; - } -#endif - - static const uint8_t g_astc_quint_encode[125] = - { - 0, 1, 2, 3, 4, 8, 9, 10, 11, 12, 16, 17, 18, 19, 20, 24, 25, 26, 27, 28, 5, 13, 21, 29, 6, 32, 33, 34, 35, 36, 40, 41, 42, 43, 44, 48, 49, 50, 51, 52, 56, 57, - 58, 59, 60, 37, 45, 53, 61, 14, 64, 65, 66, 67, 68, 72, 73, 74, 75, 76, 80, 81, 82, 83, 84, 88, 89, 90, 91, 92, 69, 77, 85, 93, 22, 96, 97, 98, 99, 100, 104, - 105, 106, 107, 108, 112, 113, 114, 115, 116, 120, 121, 122, 123, 124, 101, 109, 117, 125, 30, 102, 103, 70, 71, 38, 110, 111, 78, 79, 46, 118, 119, 86, 87, 54, - 126, 127, 94, 95, 62, 39, 47, 55, 63, 31 - }; - - // Encodes 3 values to output, usable for any range that uses quints and bits - static inline void astc_encode_quints(uint32_t* pOutput, const uint8_t* pValues, int& bit_pos, int n) - { - // First extract the trits and the bits from the 5 input values - int quints = 0, bits[3]; - const uint32_t bit_mask = (1 << n) - 1; - for (int i = 0; i < 3; i++) - { - static const int s_muls[3] = { 1, 5, 25 }; - - const int t = pValues[i] >> n; - - quints += t * s_muls[i]; - bits[i] = pValues[i] & bit_mask; - } - - // Encode the quints, by inverting the bit manipulations done by the decoder, converting 3 quints into 7-bits. - // See https://www.khronos.org/registry/DataFormat/specs/1.2/dataformat.1.2.html#astc-integer-sequence-encoding - - assert(quints < 125); - const int T = g_astc_quint_encode[quints]; - - // Now interleave the 7 encoded quint bits with the bits to form the encoded output. See table 95-96. - astc_set_bits(pOutput, bit_pos, bits[0] | (astc_extract_bits(T, 0, 2) << n) | (bits[1] << (3 + n)) | (astc_extract_bits(T, 3, 4) << (3 + n * 2)) | - (bits[2] << (5 + n * 2)) | (astc_extract_bits(T, 5, 6) << (5 + n * 3)), 7 + n * 3); - } - - // Packs values using ASTC's BISE to output buffer. - static void astc_pack_bise(uint32_t* pDst, const uint8_t* pSrc_vals, int bit_pos, int num_vals, int range) - { - uint32_t temp[5] = { 0, 0, 0, 0, 0 }; - - const int num_bits = g_astc_bise_range_table[range][0]; - - int group_size = 0; - if (g_astc_bise_range_table[range][1]) - group_size = 5; - else if (g_astc_bise_range_table[range][2]) - group_size = 3; - - if (group_size) - { - // Range has trits or quints - pack each group of 5 or 3 values - const int total_groups = (group_size == 5) ? ((num_vals + 4) / 5) : ((num_vals + 2) / 3); - - for (int group_index = 0; group_index < total_groups; group_index++) - { - uint8_t vals[5] = { 0, 0, 0, 0, 0 }; - - const int limit = basisu::minimum(group_size, num_vals - group_index * group_size); - for (int i = 0; i < limit; i++) - vals[i] = pSrc_vals[group_index * group_size + i]; - - if (group_size == 5) - astc_encode_trits(temp, vals, bit_pos, num_bits); - else - astc_encode_quints(temp, vals, bit_pos, num_bits); - } - } - else - { - for (int i = 0; i < num_vals; i++) - astc_set_bits_1_to_9(temp, bit_pos, pSrc_vals[i], num_bits); - } - - pDst[0] |= temp[0]; pDst[1] |= temp[1]; - pDst[2] |= temp[2]; pDst[3] |= temp[3]; - } - - const uint32_t ASTC_BLOCK_MODE_BITS = 11; - const uint32_t ASTC_PART_BITS = 2; - const uint32_t ASTC_CEM_BITS = 4; - const uint32_t ASTC_PARTITION_INDEX_BITS = 10; - const uint32_t ASTC_CCS_BITS = 2; - - const uint32_t g_uastc_mode_astc_block_mode[TOTAL_UASTC_MODES] = { 0x242, 0x42, 0x53, 0x42, 0x42, 0x53, 0x442, 0x42, 0, 0x42, 0x242, 0x442, 0x53, 0x441, 0x42, 0x242, 0x42, 0x442, 0x253 }; - - bool pack_astc_block(uint32_t* pDst, const astc_block_desc* pBlock, uint32_t uastc_mode) - { - assert(uastc_mode < TOTAL_UASTC_MODES); - uint8_t* pDst_bytes = reinterpret_cast(pDst); - - const int total_weights = pBlock->m_dual_plane ? 32 : 16; - - // Set mode bits - see Table 146-147 - uint32_t mode = g_uastc_mode_astc_block_mode[uastc_mode]; - pDst_bytes[0] = (uint8_t)mode; - pDst_bytes[1] = (uint8_t)(mode >> 8); - - memset(pDst_bytes + 2, 0, 16 - 2); - - int bit_pos = ASTC_BLOCK_MODE_BITS; - - // We only support 1-5 bit weight indices - assert(!g_astc_bise_range_table[pBlock->m_weight_range][1] && !g_astc_bise_range_table[pBlock->m_weight_range][2]); - const int bits_per_weight = g_astc_bise_range_table[pBlock->m_weight_range][0]; - - // See table 143 - PART - astc_set_bits_1_to_9(pDst, bit_pos, pBlock->m_subsets - 1, ASTC_PART_BITS); - - if (pBlock->m_subsets == 1) - astc_set_bits_1_to_9(pDst, bit_pos, pBlock->m_cem, ASTC_CEM_BITS); - else - { - // See table 145 - astc_set_bits(pDst, bit_pos, pBlock->m_partition_seed, ASTC_PARTITION_INDEX_BITS); - - // Table 150 - we assume all CEM's are equal, so write 2 0's along with the CEM - astc_set_bits_1_to_9(pDst, bit_pos, (pBlock->m_cem << 2) & 63, ASTC_CEM_BITS + 2); - } - - if (pBlock->m_dual_plane) - { - const int total_weight_bits = total_weights * bits_per_weight; - - // See Illegal Encodings 23.24 - // https://www.khronos.org/registry/DataFormat/specs/1.3/dataformat.1.3.inline.html#_illegal_encodings - assert((total_weight_bits >= 24) && (total_weight_bits <= 96)); - - int ccs_bit_pos = 128 - total_weight_bits - ASTC_CCS_BITS; - astc_set_bits_1_to_9(pDst, ccs_bit_pos, pBlock->m_ccs, ASTC_CCS_BITS); - } - - const int num_cem_pairs = (1 + (pBlock->m_cem >> 2)) * pBlock->m_subsets; - assert(num_cem_pairs <= 9); - - astc_pack_bise(pDst, pBlock->m_endpoints, bit_pos, num_cem_pairs * 2, g_uastc_mode_endpoint_ranges[uastc_mode]); - - // Write the weight bits in reverse bit order. - switch (bits_per_weight) - { - case 1: - { - const uint32_t N = 1; - for (int i = 0; i < total_weights; i++) - { - const uint32_t ofs = 128 - N - i; - assert((ofs >> 3) < 16); - pDst_bytes[ofs >> 3] |= (pBlock->m_weights[i] << (ofs & 7)); - } - break; - } - case 2: - { - const uint32_t N = 2; - for (int i = 0; i < total_weights; i++) - { - static const uint8_t s_reverse_bits2[4] = { 0, 2, 1, 3 }; - const uint32_t ofs = 128 - N - (i * N); - assert((ofs >> 3) < 16); - pDst_bytes[ofs >> 3] |= (s_reverse_bits2[pBlock->m_weights[i]] << (ofs & 7)); - } - break; - } - case 3: - { - const uint32_t N = 3; - for (int i = 0; i < total_weights; i++) - { - static const uint8_t s_reverse_bits3[8] = { 0, 4, 2, 6, 1, 5, 3, 7 }; - - const uint32_t ofs = 128 - N - (i * N); - const uint32_t rev = s_reverse_bits3[pBlock->m_weights[i]] << (ofs & 7); - - uint32_t index = ofs >> 3; - assert(index < 16); - pDst_bytes[index++] |= rev & 0xFF; - if (index < 16) - pDst_bytes[index++] |= (rev >> 8); - } - break; - } - case 4: - { - const uint32_t N = 4; - for (int i = 0; i < total_weights; i++) - { - static const uint8_t s_reverse_bits4[16] = { 0, 8, 4, 12, 2, 10, 6, 14, 1, 9, 5, 13, 3, 11, 7, 15 }; - const int ofs = 128 - N - (i * N); - assert(ofs >= 0 && (ofs >> 3) < 16); - pDst_bytes[ofs >> 3] |= (s_reverse_bits4[pBlock->m_weights[i]] << (ofs & 7)); - } - break; - } - case 5: - { - const uint32_t N = 5; - for (int i = 0; i < total_weights; i++) - { - static const uint8_t s_reverse_bits5[32] = { 0, 16, 8, 24, 4, 20, 12, 28, 2, 18, 10, 26, 6, 22, 14, 30, 1, 17, 9, 25, 5, 21, 13, 29, 3, 19, 11, 27, 7, 23, 15, 31 }; - - const uint32_t ofs = 128 - N - (i * N); - const uint32_t rev = s_reverse_bits5[pBlock->m_weights[i]] << (ofs & 7); - - uint32_t index = ofs >> 3; - assert(index < 16); - pDst_bytes[index++] |= rev & 0xFF; - if (index < 16) - pDst_bytes[index++] |= (rev >> 8); - } - - break; - } - default: - assert(0); - break; - } - - return true; - } - - const uint8_t* get_anchor_indices(uint32_t subsets, uint32_t mode, uint32_t common_pattern, const uint8_t*& pPartition_pattern) - { - const uint8_t* pSubset_anchor_indices = g_zero_pattern; - pPartition_pattern = g_zero_pattern; - - if (subsets >= 2) - { - if (subsets == 3) - { - pPartition_pattern = &g_astc_bc7_patterns3[common_pattern][0]; - pSubset_anchor_indices = &g_astc_bc7_pattern3_anchors[common_pattern][0]; - } - else if (mode == 7) - { - pPartition_pattern = &g_bc7_3_astc2_patterns2[common_pattern][0]; - pSubset_anchor_indices = &g_bc7_3_astc2_patterns2_anchors[common_pattern][0]; - } - else - { - pPartition_pattern = &g_astc_bc7_patterns2[common_pattern][0]; - pSubset_anchor_indices = &g_astc_bc7_pattern2_anchors[common_pattern][0]; - } - } - - return pSubset_anchor_indices; - } - - static inline uint32_t read_bit(const uint8_t* pBuf, uint32_t& bit_offset) - { - uint32_t byte_bits = pBuf[bit_offset >> 3] >> (bit_offset & 7); - bit_offset += 1; - return byte_bits & 1; - } - - static inline uint32_t read_bits1_to_9(const uint8_t* pBuf, uint32_t& bit_offset, uint32_t codesize) - { - assert(codesize <= 9); - if (!codesize) - return 0; - - if ((BASISD_IS_BIG_ENDIAN) || (!BASISD_USE_UNALIGNED_WORD_READS) || (bit_offset >= 112)) - { - const uint8_t* pBytes = &pBuf[bit_offset >> 3U]; - - uint32_t byte_bit_offset = bit_offset & 7U; - - uint32_t bits = pBytes[0] >> byte_bit_offset; - uint32_t bits_read = basisu::minimum(codesize, 8 - byte_bit_offset); - - uint32_t bits_remaining = codesize - bits_read; - if (bits_remaining) - bits |= ((uint32_t)pBytes[1]) << bits_read; - - bit_offset += codesize; - - return bits & ((1U << codesize) - 1U); - } - - uint32_t byte_bit_offset = bit_offset & 7U; - const uint16_t w = *(const uint16_t *)(&pBuf[bit_offset >> 3U]); - bit_offset += codesize; - return (w >> byte_bit_offset) & ((1U << codesize) - 1U); - } - - inline uint64_t read_bits64(const uint8_t* pBuf, uint32_t& bit_offset, uint32_t codesize) - { - assert(codesize <= 64U); - uint64_t bits = 0; - uint32_t total_bits = 0; - - while (total_bits < codesize) - { - uint32_t byte_bit_offset = bit_offset & 7U; - uint32_t bits_to_read = basisu::minimum(codesize - total_bits, 8U - byte_bit_offset); - - uint32_t byte_bits = pBuf[bit_offset >> 3U] >> byte_bit_offset; - byte_bits &= ((1U << bits_to_read) - 1U); - - bits |= ((uint64_t)(byte_bits) << total_bits); - - total_bits += bits_to_read; - bit_offset += bits_to_read; - } - - return bits; - } - - static inline uint32_t read_bits1_to_9_fst(const uint8_t* pBuf, uint32_t& bit_offset, uint32_t codesize) - { - assert(codesize <= 9); - if (!codesize) - return 0; - assert(bit_offset < 112); - - if ((BASISD_IS_BIG_ENDIAN) || (!BASISD_USE_UNALIGNED_WORD_READS)) - { - const uint8_t* pBytes = &pBuf[bit_offset >> 3U]; - - uint32_t byte_bit_offset = bit_offset & 7U; - - uint32_t bits = pBytes[0] >> byte_bit_offset; - uint32_t bits_read = basisu::minimum(codesize, 8 - byte_bit_offset); - - uint32_t bits_remaining = codesize - bits_read; - if (bits_remaining) - bits |= ((uint32_t)pBytes[1]) << bits_read; - - bit_offset += codesize; - - return bits & ((1U << codesize) - 1U); - } - - uint32_t byte_bit_offset = bit_offset & 7U; - const uint16_t w = *(const uint16_t*)(&pBuf[bit_offset >> 3U]); - bit_offset += codesize; - return (w >> byte_bit_offset)& ((1U << codesize) - 1U); - } - - bool unpack_uastc(const uastc_block& blk, unpacked_uastc_block& unpacked, bool blue_contract_check, bool read_hints) - { - //memset(&unpacked, 0, sizeof(unpacked)); - -#if 0 - uint8_t table[128]; - memset(table, 0xFF, sizeof(table)); - - { - for (uint32_t mode = 0; mode <= TOTAL_UASTC_MODES; mode++) - { - const uint32_t code = g_uastc_mode_huff_codes[mode][0]; - const uint32_t codesize = g_uastc_mode_huff_codes[mode][1]; - - table[code] = mode; - - uint32_t bits_left = 7 - codesize; - for (uint32_t i = 0; i < (1 << bits_left); i++) - table[code | (i << codesize)] = mode; - } - - for (uint32_t i = 0; i < 128; i++) - printf("%u,", table[i]); - exit(0); - } -#endif - - const int mode = g_uastc_huff_modes[blk.m_bytes[0] & 127]; - if (mode >= (int)TOTAL_UASTC_MODES) - return false; - - unpacked.m_mode = mode; - - uint32_t bit_ofs = g_uastc_mode_huff_codes[mode][1]; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - unpacked.m_solid_color.r = (uint8_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 8); - unpacked.m_solid_color.g = (uint8_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 8); - unpacked.m_solid_color.b = (uint8_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 8); - unpacked.m_solid_color.a = (uint8_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 8); - - if (read_hints) - { - unpacked.m_etc1_flip = false; - unpacked.m_etc1_diff = read_bit(blk.m_bytes, bit_ofs) != 0; - unpacked.m_etc1_inten0 = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 3); - unpacked.m_etc1_inten1 = 0; - unpacked.m_etc1_selector = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 2); - unpacked.m_etc1_r = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 5); - unpacked.m_etc1_g = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 5); - unpacked.m_etc1_b = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 5); - unpacked.m_etc1_bias = 0; - unpacked.m_etc2_hints = 0; - } - - return true; - } - - if (read_hints) - { - if (g_uastc_mode_has_bc1_hint0[mode]) - unpacked.m_bc1_hint0 = read_bit(blk.m_bytes, bit_ofs) != 0; - else - unpacked.m_bc1_hint0 = false; - - if (g_uastc_mode_has_bc1_hint1[mode]) - unpacked.m_bc1_hint1 = read_bit(blk.m_bytes, bit_ofs) != 0; - else - unpacked.m_bc1_hint1 = false; - - unpacked.m_etc1_flip = read_bit(blk.m_bytes, bit_ofs) != 0; - unpacked.m_etc1_diff = read_bit(blk.m_bytes, bit_ofs) != 0; - unpacked.m_etc1_inten0 = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 3); - unpacked.m_etc1_inten1 = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 3); - - if (g_uastc_mode_has_etc1_bias[mode]) - unpacked.m_etc1_bias = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 5); - else - unpacked.m_etc1_bias = 0; - - if (g_uastc_mode_has_alpha[mode]) - { - unpacked.m_etc2_hints = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 8); - //assert(unpacked.m_etc2_hints > 0); - } - else - unpacked.m_etc2_hints = 0; - } - else - bit_ofs += g_uastc_mode_total_hint_bits[mode]; - - uint32_t subsets = 1; - switch (mode) - { - case 2: - case 4: - case 7: - case 9: - case 16: - unpacked.m_common_pattern = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 5); - subsets = 2; - break; - case 3: - unpacked.m_common_pattern = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 4); - subsets = 3; - break; - default: - break; - } - - uint32_t part_seed = 0; - switch (mode) - { - case 2: - case 4: - case 9: - case 16: - if (unpacked.m_common_pattern >= TOTAL_ASTC_BC7_COMMON_PARTITIONS2) - return false; - - part_seed = g_astc_bc7_common_partitions2[unpacked.m_common_pattern].m_astc; - break; - case 3: - if (unpacked.m_common_pattern >= TOTAL_ASTC_BC7_COMMON_PARTITIONS3) - return false; - - part_seed = g_astc_bc7_common_partitions3[unpacked.m_common_pattern].m_astc; - break; - case 7: - if (unpacked.m_common_pattern >= TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS) - return false; - - part_seed = g_bc7_3_astc2_common_partitions[unpacked.m_common_pattern].m_astc2; - break; - default: - break; - } - - uint32_t total_planes = 1; - switch (mode) - { - case 6: - case 11: - case 13: - unpacked.m_astc.m_ccs = (int)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, 2); - total_planes = 2; - break; - case 17: - unpacked.m_astc.m_ccs = 3; - total_planes = 2; - break; - default: - break; - } - - unpacked.m_astc.m_dual_plane = (total_planes == 2); - - unpacked.m_astc.m_subsets = subsets; - unpacked.m_astc.m_partition_seed = part_seed; - - const uint32_t total_comps = g_uastc_mode_comps[mode]; - - const uint32_t weight_bits = g_uastc_mode_weight_bits[mode]; - - unpacked.m_astc.m_weight_range = g_uastc_mode_weight_ranges[mode]; - - const uint32_t total_values = total_comps * 2 * subsets; - const uint32_t endpoint_range = g_uastc_mode_endpoint_ranges[mode]; - - const uint32_t cem = g_uastc_mode_cem[mode]; - unpacked.m_astc.m_cem = cem; - - const uint32_t ep_bits = g_astc_bise_range_table[endpoint_range][0]; - const uint32_t ep_trits = g_astc_bise_range_table[endpoint_range][1]; - const uint32_t ep_quints = g_astc_bise_range_table[endpoint_range][2]; - - uint32_t total_tqs = 0; - uint32_t bundle_size = 0, mul = 0; - if (ep_trits) - { - total_tqs = (total_values + 4) / 5; - bundle_size = 5; - mul = 3; - } - else if (ep_quints) - { - total_tqs = (total_values + 2) / 3; - bundle_size = 3; - mul = 5; - } - - uint32_t tq_values[8]; - for (uint32_t i = 0; i < total_tqs; i++) - { - uint32_t num_bits = ep_trits ? 8 : 7; - if (i == (total_tqs - 1)) - { - uint32_t num_remaining = total_values - (total_tqs - 1) * bundle_size; - if (ep_trits) - { - switch (num_remaining) - { - case 1: num_bits = 2; break; - case 2: num_bits = 4; break; - case 3: num_bits = 5; break; - case 4: num_bits = 7; break; - default: break; - } - } - else if (ep_quints) - { - switch (num_remaining) - { - case 1: num_bits = 3; break; - case 2: num_bits = 5; break; - default: break; - } - } - } - - tq_values[i] = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, num_bits); - } // i - - uint32_t accum = 0; - uint32_t accum_remaining = 0; - uint32_t next_tq_index = 0; - - for (uint32_t i = 0; i < total_values; i++) - { - uint32_t value = (uint32_t)read_bits1_to_9_fst(blk.m_bytes, bit_ofs, ep_bits); - - if (total_tqs) - { - if (!accum_remaining) - { - assert(next_tq_index < total_tqs); - accum = tq_values[next_tq_index++]; - accum_remaining = bundle_size; - } - - // TODO: Optimize with tables - uint32_t v = accum % mul; - accum /= mul; - accum_remaining--; - - value |= (v << ep_bits); - } - - unpacked.m_astc.m_endpoints[i] = (uint8_t)value; - } - - const uint8_t* pPartition_pattern; - const uint8_t* pSubset_anchor_indices = get_anchor_indices(subsets, mode, unpacked.m_common_pattern, pPartition_pattern); - -#ifdef _DEBUG - for (uint32_t i = 0; i < 16; i++) - assert(pPartition_pattern[i] == astc_compute_texel_partition(part_seed, i & 3, i >> 2, 0, subsets, true)); - - for (uint32_t subset_index = 0; subset_index < subsets; subset_index++) - { - uint32_t anchor_index = 0; - - for (uint32_t i = 0; i < 16; i++) - { - if (pPartition_pattern[i] == subset_index) - { - anchor_index = i; - break; - } - } - - assert(pSubset_anchor_indices[subset_index] == anchor_index); - } -#endif - -#if 0 - const uint32_t total_planes_shift = total_planes - 1; - for (uint32_t i = 0; i < 16 * total_planes; i++) - { - uint32_t num_bits = weight_bits; - for (uint32_t s = 0; s < subsets; s++) - { - if (pSubset_anchor_indices[s] == (i >> total_planes_shift)) - { - num_bits--; - break; - } - } - - unpacked.m_astc.m_weights[i] = (uint8_t)read_bits1_to_9(blk.m_bytes, bit_ofs, num_bits); - } -#endif - - if (mode == 18) - { - // Mode 18 is the only mode with more than 64 weight bits. - for (uint32_t i = 0; i < 16; i++) - unpacked.m_astc.m_weights[i] = (uint8_t)read_bits1_to_9(blk.m_bytes, bit_ofs, i ? weight_bits : (weight_bits - 1)); - } - else - { - // All other modes have <= 64 weight bits. - uint64_t bits; - - // Read the weight bits - if ((BASISD_IS_BIG_ENDIAN) || (!BASISD_USE_UNALIGNED_WORD_READS)) - bits = read_bits64(blk.m_bytes, bit_ofs, basisu::minimum(64, 128 - (int)bit_ofs)); - else - { - bits = blk.m_dwords[2]; - bits |= (((uint64_t)blk.m_dwords[3]) << 32U); - - if (bit_ofs >= 64U) - bits >>= (bit_ofs - 64U); - else - { - assert(bit_ofs >= 56U); - - uint32_t bits_needed = 64U - bit_ofs; - bits <<= bits_needed; - bits |= (blk.m_bytes[7] >> (8U - bits_needed)); - } - } - - bit_ofs = 0; - - const uint32_t mask = (1U << weight_bits) - 1U; - const uint32_t anchor_mask = (1U << (weight_bits - 1U)) - 1U; - - if (total_planes == 2) - { - // Dual plane modes always have a single subset, and the first 2 weights are anchors. - - unpacked.m_astc.m_weights[0] = (uint8_t)((uint32_t)(bits >> bit_ofs) & anchor_mask); - bit_ofs += (weight_bits - 1); - - unpacked.m_astc.m_weights[1] = (uint8_t)((uint32_t)(bits >> bit_ofs) & anchor_mask); - bit_ofs += (weight_bits - 1); - - for (uint32_t i = 2; i < 32; i++) - { - unpacked.m_astc.m_weights[i] = (uint8_t)((uint32_t)(bits >> bit_ofs) & mask); - bit_ofs += weight_bits; - } - } - else - { - if (subsets == 1) - { - // Specialize the single subset case. - if (weight_bits == 4) - { - assert(bit_ofs == 0); - - // Specialize the most common case: 4-bit weights. - unpacked.m_astc.m_weights[0] = (uint8_t)((uint32_t)(bits) & 7); - unpacked.m_astc.m_weights[1] = (uint8_t)((uint32_t)(bits >> 3) & 15); - unpacked.m_astc.m_weights[2] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 1)) & 15); - unpacked.m_astc.m_weights[3] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 2)) & 15); - - unpacked.m_astc.m_weights[4] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 3)) & 15); - unpacked.m_astc.m_weights[5] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 4)) & 15); - unpacked.m_astc.m_weights[6] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 5)) & 15); - unpacked.m_astc.m_weights[7] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 6)) & 15); - - unpacked.m_astc.m_weights[8] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 7)) & 15); - unpacked.m_astc.m_weights[9] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 8)) & 15); - unpacked.m_astc.m_weights[10] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 9)) & 15); - unpacked.m_astc.m_weights[11] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 10)) & 15); - - unpacked.m_astc.m_weights[12] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 11)) & 15); - unpacked.m_astc.m_weights[13] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 12)) & 15); - unpacked.m_astc.m_weights[14] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 13)) & 15); - unpacked.m_astc.m_weights[15] = (uint8_t)((uint32_t)(bits >> (3 + 4 * 14)) & 15); - } - else - { - // First weight is always an anchor. - unpacked.m_astc.m_weights[0] = (uint8_t)((uint32_t)(bits >> bit_ofs) & anchor_mask); - bit_ofs += (weight_bits - 1); - - for (uint32_t i = 1; i < 16; i++) - { - unpacked.m_astc.m_weights[i] = (uint8_t)((uint32_t)(bits >> bit_ofs) & mask); - bit_ofs += weight_bits; - } - } - } - else - { - const uint32_t a0 = pSubset_anchor_indices[0], a1 = pSubset_anchor_indices[1], a2 = pSubset_anchor_indices[2]; - - for (uint32_t i = 0; i < 16; i++) - { - if ((i == a0) || (i == a1) || (i == a2)) - { - unpacked.m_astc.m_weights[i] = (uint8_t)((uint32_t)(bits >> bit_ofs) & anchor_mask); - bit_ofs += (weight_bits - 1); - } - else - { - unpacked.m_astc.m_weights[i] = (uint8_t)((uint32_t)(bits >> bit_ofs) & mask); - bit_ofs += weight_bits; - } - } - } - } - } - - if ((blue_contract_check) && (total_comps >= 3)) - { - // We only need to disable ASTC Blue Contraction when we'll be packing to ASTC. The other transcoders don't care. - bool invert_subset[3] = { false, false, false }; - bool any_flag = false; - - for (uint32_t subset_index = 0; subset_index < subsets; subset_index++) - { - const int s0 = g_astc_unquant[endpoint_range][unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + 0]].m_unquant + - g_astc_unquant[endpoint_range][unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + 2]].m_unquant + - g_astc_unquant[endpoint_range][unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + 4]].m_unquant; - - const int s1 = g_astc_unquant[endpoint_range][unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + 1]].m_unquant + - g_astc_unquant[endpoint_range][unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + 3]].m_unquant + - g_astc_unquant[endpoint_range][unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + 5]].m_unquant; - - if (s1 < s0) - { - for (uint32_t c = 0; c < total_comps; c++) - std::swap(unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + c * 2 + 0], unpacked.m_astc.m_endpoints[subset_index * total_comps * 2 + c * 2 + 1]); - - invert_subset[subset_index] = true; - any_flag = true; - } - } - - if (any_flag) - { - const uint32_t weight_mask = (1 << weight_bits) - 1; - - for (uint32_t i = 0; i < 16; i++) - { - uint32_t subset = pPartition_pattern[i]; - - if (invert_subset[subset]) - { - unpacked.m_astc.m_weights[i * total_planes] = (uint8_t)(weight_mask - unpacked.m_astc.m_weights[i * total_planes]); - - if (total_planes == 2) - unpacked.m_astc.m_weights[i * total_planes + 1] = (uint8_t)(weight_mask - unpacked.m_astc.m_weights[i * total_planes + 1]); - } - } - } - } - - return true; - } - - static const uint32_t* g_astc_weight_tables[6] = { nullptr, g_bc7_weights1, g_bc7_weights2, g_bc7_weights3, g_astc_weights4, g_astc_weights5 }; - - bool unpack_uastc(uint32_t mode, uint32_t common_pattern, const color32& solid_color, const astc_block_desc& astc, color32* pPixels, bool srgb) - { - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - for (uint32_t i = 0; i < 16; i++) - pPixels[i] = solid_color; - return true; - } - - color32 endpoints[3][2]; - - const uint32_t total_subsets = g_uastc_mode_subsets[mode]; - const uint32_t total_comps = basisu::minimum(4U, g_uastc_mode_comps[mode]); - const uint32_t endpoint_range = g_uastc_mode_endpoint_ranges[mode]; - const uint32_t total_planes = g_uastc_mode_planes[mode]; - const uint32_t weight_bits = g_uastc_mode_weight_bits[mode]; - const uint32_t weight_levels = 1 << weight_bits; - - for (uint32_t subset_index = 0; subset_index < total_subsets; subset_index++) - { - if (total_comps == 2) - { - const uint32_t ll = g_astc_unquant[endpoint_range][astc.m_endpoints[subset_index * total_comps * 2 + 0 * 2 + 0]].m_unquant; - const uint32_t lh = g_astc_unquant[endpoint_range][astc.m_endpoints[subset_index * total_comps * 2 + 0 * 2 + 1]].m_unquant; - - const uint32_t al = g_astc_unquant[endpoint_range][astc.m_endpoints[subset_index * total_comps * 2 + 1 * 2 + 0]].m_unquant; - const uint32_t ah = g_astc_unquant[endpoint_range][astc.m_endpoints[subset_index * total_comps * 2 + 1 * 2 + 1]].m_unquant; - - endpoints[subset_index][0].set_noclamp_rgba(ll, ll, ll, al); - endpoints[subset_index][1].set_noclamp_rgba(lh, lh, lh, ah); - } - else - { - for (uint32_t comp_index = 0; comp_index < total_comps; comp_index++) - { - endpoints[subset_index][0][comp_index] = g_astc_unquant[endpoint_range][astc.m_endpoints[subset_index * total_comps * 2 + comp_index * 2 + 0]].m_unquant; - endpoints[subset_index][1][comp_index] = g_astc_unquant[endpoint_range][astc.m_endpoints[subset_index * total_comps * 2 + comp_index * 2 + 1]].m_unquant; - } - for (uint32_t comp_index = total_comps; comp_index < 4; comp_index++) - { - endpoints[subset_index][0][comp_index] = 255; - endpoints[subset_index][1][comp_index] = 255; - } - } - } - - color32 block_colors[3][32]; - - const uint32_t* pWeights = g_astc_weight_tables[weight_bits]; - - for (uint32_t subset_index = 0; subset_index < total_subsets; subset_index++) - { - for (uint32_t l = 0; l < weight_levels; l++) - { - if (total_comps == 2) - { - const uint8_t lc = (uint8_t)astc_interpolate(endpoints[subset_index][0][0], endpoints[subset_index][1][0], pWeights[l], srgb); - const uint8_t ac = (uint8_t)astc_interpolate(endpoints[subset_index][0][3], endpoints[subset_index][1][3], pWeights[l], srgb); - - block_colors[subset_index][l].set(lc, lc, lc, ac); - } - else - { - uint32_t comp_index; - for (comp_index = 0; comp_index < total_comps; comp_index++) - block_colors[subset_index][l][comp_index] = (uint8_t)astc_interpolate(endpoints[subset_index][0][comp_index], endpoints[subset_index][1][comp_index], pWeights[l], srgb); - - for (; comp_index < 4; comp_index++) - block_colors[subset_index][l][comp_index] = 255; - } - } - } - - const uint8_t* pPartition_pattern = g_zero_pattern; - - if (total_subsets >= 2) - { - if (total_subsets == 3) - pPartition_pattern = &g_astc_bc7_patterns3[common_pattern][0]; - else if (mode == 7) - pPartition_pattern = &g_bc7_3_astc2_patterns2[common_pattern][0]; - else - pPartition_pattern = &g_astc_bc7_patterns2[common_pattern][0]; - -#ifdef _DEBUG - for (uint32_t i = 0; i < 16; i++) - { - assert(pPartition_pattern[i] == (uint8_t)astc_compute_texel_partition(astc.m_partition_seed, i & 3, i >> 2, 0, total_subsets, true)); - } -#endif - } - - if (total_planes == 1) - { - if (total_subsets == 1) - { - for (uint32_t i = 0; i < 16; i++) - { - assert(astc.m_weights[i] < weight_levels); - pPixels[i] = block_colors[0][astc.m_weights[i]]; - } - } - else - { - for (uint32_t i = 0; i < 16; i++) - { - assert(astc.m_weights[i] < weight_levels); - pPixels[i] = block_colors[pPartition_pattern[i]][astc.m_weights[i]]; - } - } - } - else - { - assert(total_subsets == 1); - - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t subset_index = 0; // pPartition_pattern[i]; - - const uint32_t weight_index0 = astc.m_weights[i * 2]; - const uint32_t weight_index1 = astc.m_weights[i * 2 + 1]; - - assert(weight_index0 < weight_levels && weight_index1 < weight_levels); - - color32& c = pPixels[i]; - for (uint32_t comp = 0; comp < 4; comp++) - { - if ((int)comp == astc.m_ccs) - c[comp] = block_colors[subset_index][weight_index1][comp]; - else - c[comp] = block_colors[subset_index][weight_index0][comp]; - } - } - } - - return true; - } - - bool unpack_uastc(const unpacked_uastc_block& unpacked_blk, color32* pPixels, bool srgb) - { - return unpack_uastc(unpacked_blk.m_mode, unpacked_blk.m_common_pattern, unpacked_blk.m_solid_color, unpacked_blk.m_astc, pPixels, srgb); - } - - bool unpack_uastc(const uastc_block& blk, color32* pPixels, bool srgb) - { - unpacked_uastc_block unpacked_blk; - - if (!unpack_uastc(blk, unpacked_blk, false, false)) - return false; - - return unpack_uastc(unpacked_blk, pPixels, srgb); - } - - // Determines the best shared pbits to use to encode xl/xh - static void determine_shared_pbits( - uint32_t total_comps, uint32_t comp_bits, float xl[4], float xh[4], - color_quad_u8& bestMinColor, color_quad_u8& bestMaxColor, uint32_t best_pbits[2]) - { - const uint32_t total_bits = comp_bits + 1; - assert(total_bits >= 4 && total_bits <= 8); - - const int iscalep = (1 << total_bits) - 1; - const float scalep = (float)iscalep; - - float best_err = 1e+9f; - - for (int p = 0; p < 2; p++) - { - color_quad_u8 xMinColor, xMaxColor; - for (uint32_t c = 0; c < 4; c++) - { - xMinColor.m_c[c] = (uint8_t)(clampi(((int)((xl[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - xMaxColor.m_c[c] = (uint8_t)(clampi(((int)((xh[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - } - - color_quad_u8 scaledLow, scaledHigh; - - for (uint32_t i = 0; i < 4; i++) - { - scaledLow.m_c[i] = (xMinColor.m_c[i] << (8 - total_bits)); - scaledLow.m_c[i] |= (scaledLow.m_c[i] >> total_bits); - assert(scaledLow.m_c[i] <= 255); - - scaledHigh.m_c[i] = (xMaxColor.m_c[i] << (8 - total_bits)); - scaledHigh.m_c[i] |= (scaledHigh.m_c[i] >> total_bits); - assert(scaledHigh.m_c[i] <= 255); - } - - float err = 0; - for (uint32_t i = 0; i < total_comps; i++) - err += basisu::squaref((scaledLow.m_c[i] / 255.0f) - xl[i]) + basisu::squaref((scaledHigh.m_c[i] / 255.0f) - xh[i]); - - if (err < best_err) - { - best_err = err; - best_pbits[0] = p; - best_pbits[1] = p; - for (uint32_t j = 0; j < 4; j++) - { - bestMinColor.m_c[j] = xMinColor.m_c[j] >> 1; - bestMaxColor.m_c[j] = xMaxColor.m_c[j] >> 1; - } - } - } - } - - // Determines the best unique pbits to use to encode xl/xh - static void determine_unique_pbits( - uint32_t total_comps, uint32_t comp_bits, float xl[4], float xh[4], - color_quad_u8& bestMinColor, color_quad_u8& bestMaxColor, uint32_t best_pbits[2]) - { - const uint32_t total_bits = comp_bits + 1; - const int iscalep = (1 << total_bits) - 1; - const float scalep = (float)iscalep; - - float best_err0 = 1e+9f; - float best_err1 = 1e+9f; - - for (int p = 0; p < 2; p++) - { - color_quad_u8 xMinColor, xMaxColor; - - for (uint32_t c = 0; c < 4; c++) - { - xMinColor.m_c[c] = (uint8_t)(clampi(((int)((xl[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - xMaxColor.m_c[c] = (uint8_t)(clampi(((int)((xh[c] * scalep - p) / 2.0f + .5f)) * 2 + p, p, iscalep - 1 + p)); - } - - color_quad_u8 scaledLow, scaledHigh; - for (uint32_t i = 0; i < 4; i++) - { - scaledLow.m_c[i] = (xMinColor.m_c[i] << (8 - total_bits)); - scaledLow.m_c[i] |= (scaledLow.m_c[i] >> total_bits); - assert(scaledLow.m_c[i] <= 255); - - scaledHigh.m_c[i] = (xMaxColor.m_c[i] << (8 - total_bits)); - scaledHigh.m_c[i] |= (scaledHigh.m_c[i] >> total_bits); - assert(scaledHigh.m_c[i] <= 255); - } - - float err0 = 0, err1 = 0; - for (uint32_t i = 0; i < total_comps; i++) - { - err0 += basisu::squaref(scaledLow.m_c[i] - xl[i] * 255.0f); - err1 += basisu::squaref(scaledHigh.m_c[i] - xh[i] * 255.0f); - } - - if (err0 < best_err0) - { - best_err0 = err0; - best_pbits[0] = p; - - bestMinColor.m_c[0] = xMinColor.m_c[0] >> 1; - bestMinColor.m_c[1] = xMinColor.m_c[1] >> 1; - bestMinColor.m_c[2] = xMinColor.m_c[2] >> 1; - bestMinColor.m_c[3] = xMinColor.m_c[3] >> 1; - } - - if (err1 < best_err1) - { - best_err1 = err1; - best_pbits[1] = p; - - bestMaxColor.m_c[0] = xMaxColor.m_c[0] >> 1; - bestMaxColor.m_c[1] = xMaxColor.m_c[1] >> 1; - bestMaxColor.m_c[2] = xMaxColor.m_c[2] >> 1; - bestMaxColor.m_c[3] = xMaxColor.m_c[3] >> 1; - } - } - } - - bool transcode_uastc_to_astc(const uastc_block& src_blk, void* pDst) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, true, false)) - return false; - - bool success = false; - if (unpacked_src_blk.m_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - pack_astc_solid_block(pDst, unpacked_src_blk.m_solid_color); - success = true; - } - else - { - success = pack_astc_block(static_cast(pDst), &unpacked_src_blk.m_astc, unpacked_src_blk.m_mode); - } - - return success; - } - - bool transcode_uastc_to_bc7(const unpacked_uastc_block& unpacked_src_blk, bc7_optimization_results& dst_blk) - { - memset(&dst_blk, 0, sizeof(dst_blk)); - - const uint32_t mode = unpacked_src_blk.m_mode; - - const uint32_t endpoint_range = g_uastc_mode_endpoint_ranges[mode]; - const uint32_t total_comps = g_uastc_mode_comps[mode]; - - switch (mode) - { - case 0: - case 5: - case 10: - case 12: - case 14: - case 15: - case 18: - { - // MODE 0: DualPlane: 0, WeightRange: 8 (16), Subsets: 1, EndpointRange: 19 (192) - BC7 MODE6 RGB - // MODE 5: DualPlane: 0, WeightRange : 5 (8), Subsets : 1, EndpointRange : 20 (256) - BC7 MODE6 RGB - // MODE 10 DualPlane: 0, WeightRange: 8 (16), Subsets: 1, EndpointRange: 13 (48) - BC7 MODE6 - // MODE 12: DualPlane: 0, WeightRange : 5 (8), Subsets : 1, EndpointRange : 19 (192) - BC7 MODE6 - // MODE 14: DualPlane: 0, WeightRange : 2 (4), Subsets : 1, EndpointRange : 20 (256) - BC7 MODE6 - // MODE 18: DualPlane: 0, WeightRange : 11 (32), Subsets : 1, CEM : 8, EndpointRange : 11 (32) - BC7 MODE6 - // MODE 15: DualPlane: 0, WeightRange : 8 (16), Subsets : 1, CEM : 4 (LA Direct), EndpointRange : 20 (256) - BC7 MODE6 - dst_blk.m_mode = 6; - - float xl[4], xh[4]; - if (total_comps == 2) - { - xl[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[0]].m_unquant / 255.0f; - xh[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[1]].m_unquant / 255.0f; - - xl[1] = xl[0]; - xh[1] = xh[0]; - - xl[2] = xl[0]; - xh[2] = xh[0]; - - xl[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[2]].m_unquant / 255.0f; - xh[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[3]].m_unquant / 255.0f; - } - else - { - xl[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[0]].m_unquant / 255.0f; - xl[1] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[2]].m_unquant / 255.0f; - xl[2] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[4]].m_unquant / 255.0f; - - xh[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[1]].m_unquant / 255.0f; - xh[1] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[3]].m_unquant / 255.0f; - xh[2] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[5]].m_unquant / 255.0f; - - if (total_comps == 4) - { - xl[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[6]].m_unquant / 255.0f; - xh[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[7]].m_unquant / 255.0f; - } - else - { - xl[3] = 1.0f; - xh[3] = 1.0f; - } - } - - uint32_t best_pbits[2]; - color_quad_u8 bestMinColor, bestMaxColor; - determine_unique_pbits((total_comps == 2) ? 4 : total_comps, 7, xl, xh, bestMinColor, bestMaxColor, best_pbits); - - dst_blk.m_low[0] = bestMinColor; - dst_blk.m_high[0] = bestMaxColor; - - if (total_comps == 3) - { - dst_blk.m_low[0].m_c[3] = 127; - dst_blk.m_high[0].m_c[3] = 127; - } - - dst_blk.m_pbits[0][0] = best_pbits[0]; - dst_blk.m_pbits[0][1] = best_pbits[1]; - - if (mode == 18) - { - const uint8_t s_bc7_5_to_4[32] = { 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6, 6, 7, 8, 9, 9, 9, 10, 10, 11, 11, 12, 12, 13, 13, 14, 14, 15, 15 }; - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = s_bc7_5_to_4[unpacked_src_blk.m_astc.m_weights[i]]; - } - else if (mode == 14) - { - const uint8_t s_bc7_2_to_4[4] = { 0, 5, 10, 15 }; - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = s_bc7_2_to_4[unpacked_src_blk.m_astc.m_weights[i]]; - } - else if ((mode == 5) || (mode == 12)) - { - const uint8_t s_bc7_3_to_4[8] = { 0, 2, 4, 6, 9, 11, 13, 15 }; - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = s_bc7_3_to_4[unpacked_src_blk.m_astc.m_weights[i]]; - } - else - { - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - } - - break; - } - case 1: - { - // DualPlane: 0, WeightRange : 2 (4), Subsets : 1, EndpointRange : 20 (256) - BC7 MODE3 - // Mode 1 uses endpoint range 20 - no need to use ASTC dequant tables. - dst_blk.m_mode = 3; - - float xl[4], xh[4]; - xl[0] = unpacked_src_blk.m_astc.m_endpoints[0] / 255.0f; - xl[1] = unpacked_src_blk.m_astc.m_endpoints[2] / 255.0f; - xl[2] = unpacked_src_blk.m_astc.m_endpoints[4] / 255.0f; - xl[3] = 1.0f; - - xh[0] = unpacked_src_blk.m_astc.m_endpoints[1] / 255.0f; - xh[1] = unpacked_src_blk.m_astc.m_endpoints[3] / 255.0f; - xh[2] = unpacked_src_blk.m_astc.m_endpoints[5] / 255.0f; - xh[3] = 1.0f; - - uint32_t best_pbits[2]; - color_quad_u8 bestMinColor, bestMaxColor; - memset(&bestMinColor, 0, sizeof(bestMinColor)); - memset(&bestMaxColor, 0, sizeof(bestMaxColor)); - determine_unique_pbits(3, 7, xl, xh, bestMinColor, bestMaxColor, best_pbits); - - for (uint32_t i = 0; i < 3; i++) - { - dst_blk.m_low[0].m_c[i] = bestMinColor.m_c[i]; - dst_blk.m_high[0].m_c[i] = bestMaxColor.m_c[i]; - dst_blk.m_low[1].m_c[i] = bestMinColor.m_c[i]; - dst_blk.m_high[1].m_c[i] = bestMaxColor.m_c[i]; - } - dst_blk.m_pbits[0][0] = best_pbits[0]; - dst_blk.m_pbits[0][1] = best_pbits[1]; - dst_blk.m_pbits[1][0] = best_pbits[0]; - dst_blk.m_pbits[1][1] = best_pbits[1]; - - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - - break; - } - case 2: - { - // 2. DualPlane: 0, WeightRange : 5 (8), Subsets : 2, EndpointRange : 8 (16) - BC7 MODE1 - dst_blk.m_mode = 1; - dst_blk.m_partition = g_astc_bc7_common_partitions2[unpacked_src_blk.m_common_pattern].m_bc7; - - const bool invert_partition = g_astc_bc7_common_partitions2[unpacked_src_blk.m_common_pattern].m_invert; - - float xl[4], xh[4]; - xl[3] = 1.0f; - xh[3] = 1.0f; - - for (uint32_t subset = 0; subset < 2; subset++) - { - for (uint32_t i = 0; i < 3; i++) - { - uint32_t v = unpacked_src_blk.m_astc.m_endpoints[i * 2 + subset * 6]; - v = (v << 4) | v; - xl[i] = v / 255.0f; - - v = unpacked_src_blk.m_astc.m_endpoints[i * 2 + subset * 6 + 1]; - v = (v << 4) | v; - xh[i] = v / 255.0f; - } - - uint32_t best_pbits[2] = { 0, 0 }; - color_quad_u8 bestMinColor, bestMaxColor; - memset(&bestMinColor, 0, sizeof(bestMinColor)); - memset(&bestMaxColor, 0, sizeof(bestMaxColor)); - determine_shared_pbits(3, 6, xl, xh, bestMinColor, bestMaxColor, best_pbits); - - const uint32_t bc7_subset_index = invert_partition ? (1 - subset) : subset; - - for (uint32_t i = 0; i < 3; i++) - { - dst_blk.m_low[bc7_subset_index].m_c[i] = bestMinColor.m_c[i]; - dst_blk.m_high[bc7_subset_index].m_c[i] = bestMaxColor.m_c[i]; - } - - dst_blk.m_pbits[bc7_subset_index][0] = best_pbits[0]; - } // subset - - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - - break; - } - case 3: - { - // DualPlane: 0, WeightRange : 2 (4), Subsets : 3, EndpointRange : 7 (12) - BC7 MODE2 - dst_blk.m_mode = 2; - dst_blk.m_partition = g_astc_bc7_common_partitions3[unpacked_src_blk.m_common_pattern].m_bc7; - - const uint32_t perm = g_astc_bc7_common_partitions3[unpacked_src_blk.m_common_pattern].m_astc_to_bc7_perm; - - for (uint32_t subset = 0; subset < 3; subset++) - { - for (uint32_t comp = 0; comp < 3; comp++) - { - uint32_t lo = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[comp * 2 + 0 + subset * 6]].m_unquant; - uint32_t hi = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[comp * 2 + 1 + subset * 6]].m_unquant; - - // TODO: I think this can be improved by using tables like Basis Universal does with ETC1S conversion. - lo = (lo * 31 + 127) / 255; - hi = (hi * 31 + 127) / 255; - - const uint32_t bc7_subset_index = g_astc_to_bc7_partition_index_perm_tables[perm][subset]; - - dst_blk.m_low[bc7_subset_index].m_c[comp] = (uint8_t)lo; - dst_blk.m_high[bc7_subset_index].m_c[comp] = (uint8_t)hi; - } - } - - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - - break; - } - case 4: - { - // 4. DualPlane: 0, WeightRange: 2 (4), Subsets: 2, EndpointRange: 12 (40) - BC7 MODE3 - dst_blk.m_mode = 3; - dst_blk.m_partition = g_astc_bc7_common_partitions2[unpacked_src_blk.m_common_pattern].m_bc7; - - const bool invert_partition = g_astc_bc7_common_partitions2[unpacked_src_blk.m_common_pattern].m_invert; - - float xl[4], xh[4]; - xl[3] = 1.0f; - xh[3] = 1.0f; - - for (uint32_t subset = 0; subset < 2; subset++) - { - for (uint32_t i = 0; i < 3; i++) - { - xl[i] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[i * 2 + subset * 6]].m_unquant / 255.0f; - xh[i] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[i * 2 + subset * 6 + 1]].m_unquant / 255.0f; - } - - uint32_t best_pbits[2] = { 0, 0 }; - color_quad_u8 bestMinColor, bestMaxColor; - memset(&bestMinColor, 0, sizeof(bestMinColor)); - memset(&bestMaxColor, 0, sizeof(bestMaxColor)); - determine_unique_pbits(3, 7, xl, xh, bestMinColor, bestMaxColor, best_pbits); - - const uint32_t bc7_subset_index = invert_partition ? (1 - subset) : subset; - - for (uint32_t i = 0; i < 3; i++) - { - dst_blk.m_low[bc7_subset_index].m_c[i] = bestMinColor.m_c[i]; - dst_blk.m_high[bc7_subset_index].m_c[i] = bestMaxColor.m_c[i]; - } - dst_blk.m_low[bc7_subset_index].m_c[3] = 127; - dst_blk.m_high[bc7_subset_index].m_c[3] = 127; - - dst_blk.m_pbits[bc7_subset_index][0] = best_pbits[0]; - dst_blk.m_pbits[bc7_subset_index][1] = best_pbits[1]; - - } // subset - - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - - break; - } - case 6: - case 11: - case 13: - case 17: - { - // MODE 6: DualPlane: 1, WeightRange : 2 (4), Subsets : 1, EndpointRange : 18 (160) - BC7 MODE5 RGB - // MODE 11: DualPlane: 1, WeightRange: 2 (4), Subsets: 1, EndpointRange: 13 (48) - BC7 MODE5 - // MODE 13: DualPlane: 1, WeightRange: 0 (2), Subsets : 1, EndpointRange : 20 (256) - BC7 MODE5 - // MODE 17: DualPlane: 1, WeightRange: 2 (4), Subsets: 1, CEM: 4 (LA Direct), EndpointRange: 20 (256) - BC7 MODE5 - dst_blk.m_mode = 5; - dst_blk.m_rotation = (unpacked_src_blk.m_astc.m_ccs + 1) & 3; - - if (total_comps == 2) - { - assert(unpacked_src_blk.m_astc.m_ccs == 3); - - dst_blk.m_low->m_c[0] = (uint8_t)((g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[0]].m_unquant * 127 + 127) / 255); - dst_blk.m_high->m_c[0] = (uint8_t)((g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[1]].m_unquant * 127 + 127) / 255); - - dst_blk.m_low->m_c[1] = dst_blk.m_low->m_c[0]; - dst_blk.m_high->m_c[1] = dst_blk.m_high->m_c[0]; - - dst_blk.m_low->m_c[2] = dst_blk.m_low->m_c[0]; - dst_blk.m_high->m_c[2] = dst_blk.m_high->m_c[0]; - - dst_blk.m_low->m_c[3] = (uint8_t)(g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[2]].m_unquant); - dst_blk.m_high->m_c[3] = (uint8_t)(g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[3]].m_unquant); - } - else - { - for (uint32_t astc_comp = 0; astc_comp < 4; astc_comp++) - { - uint32_t bc7_comp = astc_comp; - // ASTC and BC7 handle dual plane component rotations differently: - // ASTC: 2nd plane separately interpolates the CCS channel. - // BC7: 2nd plane channel is swapped with alpha, 2nd plane controls alpha interpolation, then we swap alpha with the desired channel. - if (astc_comp == (uint32_t)unpacked_src_blk.m_astc.m_ccs) - bc7_comp = 3; - else if (astc_comp == 3) - bc7_comp = unpacked_src_blk.m_astc.m_ccs; - - uint32_t l = 255, h = 255; - if (astc_comp < total_comps) - { - l = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[astc_comp * 2 + 0]].m_unquant; - h = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[astc_comp * 2 + 1]].m_unquant; - } - - if (bc7_comp < 3) - { - l = (l * 127 + 127) / 255; - h = (h * 127 + 127) / 255; - } - - dst_blk.m_low->m_c[bc7_comp] = (uint8_t)l; - dst_blk.m_high->m_c[bc7_comp] = (uint8_t)h; - } - } - - if (mode == 13) - { - for (uint32_t i = 0; i < 16; i++) - { - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i * 2] ? 3 : 0; - dst_blk.m_alpha_selectors[i] = unpacked_src_blk.m_astc.m_weights[i * 2 + 1] ? 3 : 0; - } - } - else - { - for (uint32_t i = 0; i < 16; i++) - { - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i * 2]; - dst_blk.m_alpha_selectors[i] = unpacked_src_blk.m_astc.m_weights[i * 2 + 1]; - } - } - - break; - } - case 7: - { - // DualPlane: 0, WeightRange : 2 (4), Subsets : 2, EndpointRange : 12 (40) - BC7 MODE2 - dst_blk.m_mode = 2; - dst_blk.m_partition = g_bc7_3_astc2_common_partitions[unpacked_src_blk.m_common_pattern].m_bc73; - - const uint32_t common_pattern_k = g_bc7_3_astc2_common_partitions[unpacked_src_blk.m_common_pattern].k; - - for (uint32_t bc7_part = 0; bc7_part < 3; bc7_part++) - { - const uint32_t astc_part = bc7_convert_partition_index_3_to_2(bc7_part, common_pattern_k); - - for (uint32_t c = 0; c < 3; c++) - { - dst_blk.m_low[bc7_part].m_c[c] = (g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[c * 2 + 0 + astc_part * 6]].m_unquant * 31 + 127) / 255; - dst_blk.m_high[bc7_part].m_c[c] = (g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[c * 2 + 1 + astc_part * 6]].m_unquant * 31 + 127) / 255; - } - } - - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - - break; - } - case UASTC_MODE_INDEX_SOLID_COLOR: - { - // Void-Extent: Solid Color RGBA (BC7 MODE5 or MODE6) - const color32& solid_color = unpacked_src_blk.m_solid_color; - - uint32_t best_err0 = g_bc7_mode_6_optimal_endpoints[solid_color.r][0].m_error + g_bc7_mode_6_optimal_endpoints[solid_color.g][0].m_error + - g_bc7_mode_6_optimal_endpoints[solid_color.b][0].m_error + g_bc7_mode_6_optimal_endpoints[solid_color.a][0].m_error; - - uint32_t best_err1 = g_bc7_mode_6_optimal_endpoints[solid_color.r][1].m_error + g_bc7_mode_6_optimal_endpoints[solid_color.g][1].m_error + - g_bc7_mode_6_optimal_endpoints[solid_color.b][1].m_error + g_bc7_mode_6_optimal_endpoints[solid_color.a][1].m_error; - - if (best_err0 > 0 && best_err1 > 0) - { - dst_blk.m_mode = 5; - - for (uint32_t c = 0; c < 3; c++) - { - dst_blk.m_low[0].m_c[c] = g_bc7_mode_5_optimal_endpoints[solid_color.c[c]].m_lo; - dst_blk.m_high[0].m_c[c] = g_bc7_mode_5_optimal_endpoints[solid_color.c[c]].m_hi; - } - - memset(dst_blk.m_selectors, BC7ENC_MODE_5_OPTIMAL_INDEX, 16); - - dst_blk.m_low[0].m_c[3] = solid_color.c[3]; - dst_blk.m_high[0].m_c[3] = solid_color.c[3]; - - //memset(dst_blk.m_alpha_selectors, 0, 16); - } - else - { - dst_blk.m_mode = 6; - - uint32_t best_p = 0; - if (best_err1 < best_err0) - best_p = 1; - - for (uint32_t c = 0; c < 4; c++) - { - dst_blk.m_low[0].m_c[c] = g_bc7_mode_6_optimal_endpoints[solid_color.c[c]][best_p].m_lo; - dst_blk.m_high[0].m_c[c] = g_bc7_mode_6_optimal_endpoints[solid_color.c[c]][best_p].m_hi; - } - - dst_blk.m_pbits[0][0] = best_p; - dst_blk.m_pbits[0][1] = best_p; - memset(dst_blk.m_selectors, BC7ENC_MODE_6_OPTIMAL_INDEX, 16); - } - - break; - } - case 9: - case 16: - { - // 9. DualPlane: 0, WeightRange : 2 (4), Subsets : 2, EndpointRange : 8 (16) - BC7 MODE7 - // 16. DualPlane: 0, WeightRange: 2 (4), Subsets: 2, CEM: 4 (LA Direct), EndpointRange: 20 (256) - BC7 MODE7 - - dst_blk.m_mode = 7; - dst_blk.m_partition = g_astc_bc7_common_partitions2[unpacked_src_blk.m_common_pattern].m_bc7; - - const bool invert_partition = g_astc_bc7_common_partitions2[unpacked_src_blk.m_common_pattern].m_invert; - - for (uint32_t astc_subset = 0; astc_subset < 2; astc_subset++) - { - float xl[4], xh[4]; - - if (total_comps == 2) - { - xl[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[0 + astc_subset * 4]].m_unquant / 255.0f; - xh[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[1 + astc_subset * 4]].m_unquant / 255.0f; - - xl[1] = xl[0]; - xh[1] = xh[0]; - - xl[2] = xl[0]; - xh[2] = xh[0]; - - xl[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[2 + astc_subset * 4]].m_unquant / 255.0f; - xh[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[3 + astc_subset * 4]].m_unquant / 255.0f; - } - else - { - xl[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[0 + astc_subset * 8]].m_unquant / 255.0f; - xl[1] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[2 + astc_subset * 8]].m_unquant / 255.0f; - xl[2] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[4 + astc_subset * 8]].m_unquant / 255.0f; - xl[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[6 + astc_subset * 8]].m_unquant / 255.0f; - - xh[0] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[1 + astc_subset * 8]].m_unquant / 255.0f; - xh[1] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[3 + astc_subset * 8]].m_unquant / 255.0f; - xh[2] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[5 + astc_subset * 8]].m_unquant / 255.0f; - xh[3] = g_astc_unquant[endpoint_range][unpacked_src_blk.m_astc.m_endpoints[7 + astc_subset * 8]].m_unquant / 255.0f; - } - - uint32_t best_pbits[2] = { 0, 0 }; - color_quad_u8 bestMinColor, bestMaxColor; - memset(&bestMinColor, 0, sizeof(bestMinColor)); - memset(&bestMaxColor, 0, sizeof(bestMaxColor)); - determine_unique_pbits(4, 5, xl, xh, bestMinColor, bestMaxColor, best_pbits); - - const uint32_t bc7_subset_index = invert_partition ? (1 - astc_subset) : astc_subset; - - dst_blk.m_low[bc7_subset_index] = bestMinColor; - dst_blk.m_high[bc7_subset_index] = bestMaxColor; - - dst_blk.m_pbits[bc7_subset_index][0] = best_pbits[0]; - dst_blk.m_pbits[bc7_subset_index][1] = best_pbits[1]; - } // astc_subset - - for (uint32_t i = 0; i < 16; i++) - dst_blk.m_selectors[i] = unpacked_src_blk.m_astc.m_weights[i]; - - break; - } - default: - return false; - } - - return true; - } - - bool transcode_uastc_to_bc7(const uastc_block& src_blk, bc7_optimization_results& dst_blk) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false, false)) - return false; - - return transcode_uastc_to_bc7(unpacked_src_blk, dst_blk); - } - - bool transcode_uastc_to_bc7(const uastc_block& src_blk, void* pDst) - { - bc7_optimization_results temp; - if (!transcode_uastc_to_bc7(src_blk, temp)) - return false; - - encode_bc7_block(pDst, &temp); - return true; - } - - color32 apply_etc1_bias(const color32 &block_color, uint32_t bias, uint32_t limit, uint32_t subblock) - { - color32 result; - - for (uint32_t c = 0; c < 3; c++) - { - static const int s_divs[3] = { 1, 3, 9 }; - - int delta = 0; - - switch (bias) - { - case 2: delta = subblock ? 0 : ((c == 0) ? -1 : 0); break; - case 5: delta = subblock ? 0 : ((c == 1) ? -1 : 0); break; - case 6: delta = subblock ? 0 : ((c == 2) ? -1 : 0); break; - - case 7: delta = subblock ? 0 : ((c == 0) ? 1 : 0); break; - case 11: delta = subblock ? 0 : ((c == 1) ? 1 : 0); break; - case 15: delta = subblock ? 0 : ((c == 2) ? 1 : 0); break; - - case 18: delta = subblock ? ((c == 0) ? -1 : 0) : 0; break; - case 19: delta = subblock ? ((c == 1) ? -1 : 0) : 0; break; - case 20: delta = subblock ? ((c == 2) ? -1 : 0) : 0; break; - - case 21: delta = subblock ? ((c == 0) ? 1 : 0) : 0; break; - case 24: delta = subblock ? ((c == 1) ? 1 : 0) : 0; break; - case 8: delta = subblock ? ((c == 2) ? 1 : 0) : 0; break; - - case 10: delta = -2; break; - - case 27: delta = subblock ? 0 : -1; break; - case 28: delta = subblock ? -1 : 1; break; - case 29: delta = subblock ? 1 : 0; break; - case 30: delta = subblock ? -1 : 0; break; - case 31: delta = subblock ? 0 : 1; break; - - default: - delta = ((bias / s_divs[c]) % 3) - 1; - break; - } - - int v = block_color[c]; - if (v == 0) - { - if (delta == -2) - v += 3; - else - v += delta + 1; - } - else if (v == (int)limit) - { - v += (delta - 1); - } - else - { - v += delta; - if ((v < 0) || (v > (int)limit)) - v = (v - delta) - delta; - } - - assert(v >= 0); - assert(v <= (int)limit); - - result[c] = (uint8_t)v; - } - - return result; - } - - static void etc1_determine_selectors(decoder_etc_block& dst_blk, const color32* pSource_pixels, uint32_t first_subblock, uint32_t last_subblock) - { - static const uint8_t s_tran[4] = { 1, 0, 2, 3 }; - - uint16_t l_bitmask = 0; - uint16_t h_bitmask = 0; - - for (uint32_t subblock = first_subblock; subblock < last_subblock; subblock++) - { - color32 block_colors[4]; - dst_blk.get_block_colors(block_colors, subblock); - - uint32_t block_y[4]; - for (uint32_t i = 0; i < 4; i++) - block_y[i] = block_colors[i][0] * 54 + block_colors[i][1] * 183 + block_colors[i][2] * 19; - - const uint32_t block_y01 = block_y[0] + block_y[1]; - const uint32_t block_y12 = block_y[1] + block_y[2]; - const uint32_t block_y23 = block_y[2] + block_y[3]; - - // X0 X0 X0 X0 X1 X1 X1 X1 X2 X2 X2 X2 X3 X3 X3 X3 - // Y0 Y1 Y2 Y3 Y0 Y1 Y2 Y3 Y0 Y1 Y2 Y3 Y0 Y1 Y2 Y3 - - if (dst_blk.get_flip_bit()) - { - uint32_t ofs = subblock * 2; - - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const color32& c = pSource_pixels[x + (subblock * 2 + y) * 4]; - const uint32_t l = c[0] * 108 + c[1] * 366 + c[2] * 38; - - uint32_t t = s_tran[(l < block_y01) + (l < block_y12) + (l < block_y23)]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ofs += 4; - } - - ofs = (int)ofs + 1 - 4 * 4; - } - } - else - { - uint32_t ofs = (subblock * 2) * 4; - for (uint32_t x = 0; x < 2; x++) - { - for (uint32_t y = 0; y < 4; y++) - { - const color32& c = pSource_pixels[subblock * 2 + x + y * 4]; - const uint32_t l = c[0] * 108 + c[1] * 366 + c[2] * 38; - - uint32_t t = s_tran[(l < block_y01) + (l < block_y12) + (l < block_y23)]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ++ofs; - } - } - } - } - - dst_blk.m_bytes[7] = (uint8_t)(l_bitmask); - dst_blk.m_bytes[6] = (uint8_t)(l_bitmask >> 8); - dst_blk.m_bytes[5] = (uint8_t)(h_bitmask); - dst_blk.m_bytes[4] = (uint8_t)(h_bitmask >> 8); - } - - static const uint8_t s_etc1_solid_selectors[4][4] = { { 255, 255, 255, 255 }, { 255, 255, 0, 0 }, { 0, 0, 0, 0 }, {0, 0, 255, 255 } }; - - struct etc_coord2 - { - uint8_t m_x, m_y; - }; - - // [flip][subblock][pixel_index] - const etc_coord2 g_etc1_pixel_coords[2][2][8] = - { - { - { - { 0, 0 }, { 0, 1 }, { 0, 2 }, { 0, 3 }, - { 1, 0 }, { 1, 1 }, { 1, 2 }, { 1, 3 } - }, - { - { 2, 0 }, { 2, 1 }, { 2, 2 }, { 2, 3 }, - { 3, 0 }, { 3, 1 }, { 3, 2 }, { 3, 3 } - } - }, - { - { - { 0, 0 }, { 1, 0 }, { 2, 0 }, { 3, 0 }, - { 0, 1 }, { 1, 1 }, { 2, 1 }, { 3, 1 } - }, - { - { 0, 2 }, { 1, 2 }, { 2, 2 }, { 3, 2 }, - { 0, 3 }, { 1, 3 }, { 2, 3 }, { 3, 3 } - }, - } - }; - - void transcode_uastc_to_etc1(unpacked_uastc_block& unpacked_src_blk, color32 block_pixels[4][4], void* pDst) - { - decoder_etc_block& dst_blk = *static_cast(pDst); - - if (unpacked_src_blk.m_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - dst_blk.m_bytes[3] = (uint8_t)((unpacked_src_blk.m_etc1_diff << 1) | (unpacked_src_blk.m_etc1_inten0 << 5) | (unpacked_src_blk.m_etc1_inten0 << 2)); - - if (unpacked_src_blk.m_etc1_diff) - { - dst_blk.m_bytes[0] = (uint8_t)(unpacked_src_blk.m_etc1_r << 3); - dst_blk.m_bytes[1] = (uint8_t)(unpacked_src_blk.m_etc1_g << 3); - dst_blk.m_bytes[2] = (uint8_t)(unpacked_src_blk.m_etc1_b << 3); - } - else - { - dst_blk.m_bytes[0] = (uint8_t)(unpacked_src_blk.m_etc1_r | (unpacked_src_blk.m_etc1_r << 4)); - dst_blk.m_bytes[1] = (uint8_t)(unpacked_src_blk.m_etc1_g | (unpacked_src_blk.m_etc1_g << 4)); - dst_blk.m_bytes[2] = (uint8_t)(unpacked_src_blk.m_etc1_b | (unpacked_src_blk.m_etc1_b << 4)); - } - - memcpy(dst_blk.m_bytes + 4, &s_etc1_solid_selectors[unpacked_src_blk.m_etc1_selector][0], 4); - - return; - } - - const bool flip = unpacked_src_blk.m_etc1_flip != 0; - const bool diff = unpacked_src_blk.m_etc1_diff != 0; - - dst_blk.m_bytes[3] = (uint8_t)((int)flip | (diff << 1) | (unpacked_src_blk.m_etc1_inten0 << 5) | (unpacked_src_blk.m_etc1_inten1 << 2)); - - const uint32_t limit = diff ? 31 : 15; - - color32 block_colors[2]; - - for (uint32_t subset = 0; subset < 2; subset++) - { - uint32_t avg_color[3]; - memset(avg_color, 0, sizeof(avg_color)); - - for (uint32_t j = 0; j < 8; j++) - { - const etc_coord2& c = g_etc1_pixel_coords[flip][subset][j]; - - avg_color[0] += block_pixels[c.m_y][c.m_x].r; - avg_color[1] += block_pixels[c.m_y][c.m_x].g; - avg_color[2] += block_pixels[c.m_y][c.m_x].b; - } // j - - block_colors[subset][0] = (uint8_t)((avg_color[0] * limit + 1020) / (8 * 255)); - block_colors[subset][1] = (uint8_t)((avg_color[1] * limit + 1020) / (8 * 255)); - block_colors[subset][2] = (uint8_t)((avg_color[2] * limit + 1020) / (8 * 255)); - block_colors[subset][3] = 0; - - if (g_uastc_mode_has_etc1_bias[unpacked_src_blk.m_mode]) - { - block_colors[subset] = apply_etc1_bias(block_colors[subset], unpacked_src_blk.m_etc1_bias, limit, subset); - } - - } // subset - - if (diff) - { - int dr = block_colors[1].r - block_colors[0].r; - int dg = block_colors[1].g - block_colors[0].g; - int db = block_colors[1].b - block_colors[0].b; - - dr = basisu::clamp(dr, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - dg = basisu::clamp(dg, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - db = basisu::clamp(db, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - - if (dr < 0) dr += 8; - if (dg < 0) dg += 8; - if (db < 0) db += 8; - - dst_blk.m_bytes[0] = (uint8_t)((block_colors[0].r << 3) | dr); - dst_blk.m_bytes[1] = (uint8_t)((block_colors[0].g << 3) | dg); - dst_blk.m_bytes[2] = (uint8_t)((block_colors[0].b << 3) | db); - } - else - { - dst_blk.m_bytes[0] = (uint8_t)(block_colors[1].r | (block_colors[0].r << 4)); - dst_blk.m_bytes[1] = (uint8_t)(block_colors[1].g | (block_colors[0].g << 4)); - dst_blk.m_bytes[2] = (uint8_t)(block_colors[1].b | (block_colors[0].b << 4)); - } - - etc1_determine_selectors(dst_blk, &block_pixels[0][0], 0, 2); - } - - bool transcode_uastc_to_etc1(const uastc_block& src_blk, void* pDst) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - color32 block_pixels[4][4]; - if (unpacked_src_blk.m_mode != UASTC_MODE_INDEX_SOLID_COLOR) - { - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - } - - transcode_uastc_to_etc1(unpacked_src_blk, block_pixels, pDst); - - return true; - } - - static inline int gray_distance2(const uint8_t c, int y) - { - int gray_dist = (int)c - y; - return gray_dist * gray_dist; - } - - static bool pack_etc1_y_estimate_flipped(const uint8_t* pSrc_pixels, - int& upper_avg, int& lower_avg, int& left_avg, int& right_avg) - { - int sums[2][2]; - -#define GET_XY(x, y) pSrc_pixels[(x) + ((y) * 4)] - - sums[0][0] = GET_XY(0, 0) + GET_XY(0, 1) + GET_XY(1, 0) + GET_XY(1, 1); - sums[1][0] = GET_XY(2, 0) + GET_XY(2, 1) + GET_XY(3, 0) + GET_XY(3, 1); - sums[0][1] = GET_XY(0, 2) + GET_XY(0, 3) + GET_XY(1, 2) + GET_XY(1, 3); - sums[1][1] = GET_XY(2, 2) + GET_XY(2, 3) + GET_XY(3, 2) + GET_XY(3, 3); - - upper_avg = (sums[0][0] + sums[1][0] + 4) / 8; - lower_avg = (sums[0][1] + sums[1][1] + 4) / 8; - left_avg = (sums[0][0] + sums[0][1] + 4) / 8; - right_avg = (sums[1][0] + sums[1][1] + 4) / 8; - -#undef GET_XY -#define GET_XY(x, y, a) gray_distance2(pSrc_pixels[(x) + ((y) * 4)], a) - - int upper_gray_dist = 0, lower_gray_dist = 0, left_gray_dist = 0, right_gray_dist = 0; - for (uint32_t i = 0; i < 4; i++) - { - for (uint32_t j = 0; j < 2; j++) - { - upper_gray_dist += GET_XY(i, j, upper_avg); - lower_gray_dist += GET_XY(i, 2 + j, lower_avg); - left_gray_dist += GET_XY(j, i, left_avg); - right_gray_dist += GET_XY(2 + j, i, right_avg); - } - } - -#undef GET_XY - - int upper_lower_sum = upper_gray_dist + lower_gray_dist; - int left_right_sum = left_gray_dist + right_gray_dist; - - return upper_lower_sum < left_right_sum; - } - - // Base Sel Table - // XXXXX XX XXX - static const uint16_t g_etc1_y_solid_block_configs[256] = - { - 0,781,64,161,260,192,33,131,96,320,65,162,261,193,34,291,97,224,66,163,262,194,35,549,98,4,67,653,164,195,523,36,99,5,578,68,165,353,196,37,135,100,324,69,166,354,197,38,295,101,228,70,167, - 355,198,39,553,102,8,71,608,168,199,527,40,103,9,582,72,169,357,200,41,139,104,328,73,170,358,201,42,299,105,232,74,171,359,202,43,557,106,12,75,612,172,203,531,44,107,13,586,76,173,361, - 204,45,143,108,332,77,174,362,205,46,303,109,236,78,175,363,206,47,561,110,16,79,616,176,207,535,48,111,17,590,80,177,365,208,49,147,112,336,81,178,366,209,50,307,113,240,82,179,367,210, - 51,565,114,20,83,620,180,211,539,52,115,21,594,84,181,369,212,53,151,116,340,85,182,370,213,54,311,117,244,86,183,371,214,55,569,118,24,87,624,184,215,543,56,119,25,598,88,185,373,216,57, - 155,120,344,89,186,374,217,58,315,121,248,90,187,375,218,59,573,122,28,91,628,188,219,754,60,123,29,602,92,189,377,220,61,159,124,348,93,190,378,221,62,319,125,252,94,191,379,222,63,882,126 - }; - - // individual - // table base sel0 sel1 sel2 sel3 - static const uint16_t g_etc1_y_solid_block_4i_configs[256] = - { - 0xA000,0xA800,0x540B,0xAA01,0xAA01,0xFE00,0xFF00,0xFF00,0x8,0x5515,0x5509,0x5509,0xAA03,0x5508,0x5508,0x9508,0xA508,0xA908,0xAA08,0x5513,0xAA09,0xAA09,0xAA05,0xFF08,0xFF08,0x10,0x551D,0x5511,0x5511, - 0xAA0B,0x5510,0x5510,0x9510,0xA510,0xA910,0xAA10,0x551B,0xAA11,0xAA11,0xAA0D,0xFF10,0xFF10,0x18,0x5525,0x5519,0x5519,0xAA13,0x5518,0x5518,0x9518,0xA518,0xA918,0xAA18,0x5523,0xAA19,0xAA19,0xAA15, - 0xFF18,0xFF18,0x20,0x552D,0x5521,0x5521,0xAA1B,0x5520,0x5520,0x9520,0xA520,0xA920,0xAA20,0x552B,0xAA21,0xAA21,0xAA1D,0xFF20,0xFF20,0x28,0x5535,0x5529,0x5529,0xAA23,0x5528,0x5528,0x9528,0xA528,0xA928, - 0xAA28,0x5533,0xAA29,0xAA29,0xAA25,0xFF28,0xFF28,0x30,0x553D,0x5531,0x5531,0xAA2B,0x5530,0x5530,0x9530,0xA530,0xA930,0xAA30,0x553B,0xAA31,0xAA31,0xAA2D,0xFF30,0xFF30,0x38,0x5545,0x5539,0x5539,0xAA33, - 0x5538,0x5538,0x9538,0xA538,0xA938,0xAA38,0x5543,0xAA39,0xAA39,0xAA35,0xFF38,0xFF38,0x40,0x554D,0x5541,0x5541,0xAA3B,0x5540,0x5540,0x9540,0xA540,0xA940,0xAA40,0x554B,0xAA41,0xAA41,0xAA3D,0xFF40,0xFF40, - 0x48,0x5555,0x5549,0x5549,0xAA43,0x5548,0x5548,0x9548,0xA548,0xA948,0xAA48,0x5553,0xAA49,0xAA49,0xAA45,0xFF48,0xFF48,0x50,0x555D,0x5551,0x5551,0xAA4B,0x5550,0x5550,0x9550,0xA550,0xA950,0xAA50,0x555B, - 0xAA51,0xAA51,0xAA4D,0xFF50,0xFF50,0x58,0x5565,0x5559,0x5559,0xAA53,0x5558,0x5558,0x9558,0xA558,0xA958,0xAA58,0x5563,0xAA59,0xAA59,0xAA55,0xFF58,0xFF58,0x60,0x556D,0x5561,0x5561,0xAA5B,0x5560,0x5560, - 0x9560,0xA560,0xA960,0xAA60,0x556B,0xAA61,0xAA61,0xAA5D,0xFF60,0xFF60,0x68,0x5575,0x5569,0x5569,0xAA63,0x5568,0x5568,0x9568,0xA568,0xA968,0xAA68,0x5573,0xAA69,0xAA69,0xAA65,0xFF68,0xFF68,0x70,0x557D, - 0x5571,0x5571,0xAA6B,0x5570,0x5570,0x9570,0xA570,0xA970,0xAA70,0x557B,0xAA71,0xAA71,0xAA6D,0xFF70,0xFF70,0x78,0x78,0x5579,0x5579,0xAA73,0x5578,0x9578,0x2578,0xE6E,0x278 - }; - - static const uint16_t g_etc1_y_solid_block_2i_configs[256] = - { - 0x416,0x800,0xA00,0x50B,0xA01,0xA01,0xF00,0xF00,0xF00,0x8,0x515,0x509,0x509,0xA03,0x508,0x508,0xF01,0xF01,0xA08,0xA08,0x513,0xA09,0xA09,0xA05,0xF08,0xF08,0x10,0x51D,0x511,0x511,0xA0B,0x510,0x510,0xF09, - 0xF09,0xA10,0xA10,0x51B,0xA11,0xA11,0xA0D,0xF10,0xF10,0x18,0x525,0x519,0x519,0xA13,0x518,0x518,0xF11,0xF11,0xA18,0xA18,0x523,0xA19,0xA19,0xA15,0xF18,0xF18,0x20,0x52D,0x521,0x521,0xA1B,0x520,0x520,0xF19, - 0xF19,0xA20,0xA20,0x52B,0xA21,0xA21,0xA1D,0xF20,0xF20,0x28,0x535,0x529,0x529,0xA23,0x528,0x528,0xF21,0xF21,0xA28,0xA28,0x533,0xA29,0xA29,0xA25,0xF28,0xF28,0x30,0x53D,0x531,0x531,0xA2B,0x530,0x530,0xF29, - 0xF29,0xA30,0xA30,0x53B,0xA31,0xA31,0xA2D,0xF30,0xF30,0x38,0x545,0x539,0x539,0xA33,0x538,0x538,0xF31,0xF31,0xA38,0xA38,0x543,0xA39,0xA39,0xA35,0xF38,0xF38,0x40,0x54D,0x541,0x541,0xA3B,0x540,0x540,0xF39, - 0xF39,0xA40,0xA40,0x54B,0xA41,0xA41,0xA3D,0xF40,0xF40,0x48,0x555,0x549,0x549,0xA43,0x548,0x548,0xF41,0xF41,0xA48,0xA48,0x553,0xA49,0xA49,0xA45,0xF48,0xF48,0x50,0x55D,0x551,0x551,0xA4B,0x550,0x550,0xF49, - 0xF49,0xA50,0xA50,0x55B,0xA51,0xA51,0xA4D,0xF50,0xF50,0x58,0x565,0x559,0x559,0xA53,0x558,0x558,0xF51,0xF51,0xA58,0xA58,0x563,0xA59,0xA59,0xA55,0xF58,0xF58,0x60,0x56D,0x561,0x561,0xA5B,0x560,0x560,0xF59, - 0xF59,0xA60,0xA60,0x56B,0xA61,0xA61,0xA5D,0xF60,0xF60,0x68,0x575,0x569,0x569,0xA63,0x568,0x568,0xF61,0xF61,0xA68,0xA68,0x573,0xA69,0xA69,0xA65,0xF68,0xF68,0x70,0x57D,0x571,0x571,0xA6B,0x570,0x570,0xF69, - 0xF69,0xA70,0xA70,0x57B,0xA71,0xA71,0xA6D,0xF70,0xF70,0x78,0x78,0x579,0x579,0xA73,0x578,0x578,0xE6E,0x278 - }; - - static const uint16_t g_etc1_y_solid_block_1i_configs[256] = - { - 0x0,0x116,0x200,0x200,0x10B,0x201,0x201,0x300,0x300,0x8,0x115,0x109,0x109,0x203,0x108,0x108,0x114,0x301,0x204,0x208,0x208,0x113,0x209,0x209,0x205,0x308,0x10,0x11D,0x111,0x111,0x20B,0x110,0x110,0x11C,0x309, - 0x20C,0x210,0x210,0x11B,0x211,0x211,0x20D,0x310,0x18,0x125,0x119,0x119,0x213,0x118,0x118,0x124,0x311,0x214,0x218,0x218,0x123,0x219,0x219,0x215,0x318,0x20,0x12D,0x121,0x121,0x21B,0x120,0x120,0x12C,0x319,0x21C, - 0x220,0x220,0x12B,0x221,0x221,0x21D,0x320,0x28,0x135,0x129,0x129,0x223,0x128,0x128,0x134,0x321,0x224,0x228,0x228,0x133,0x229,0x229,0x225,0x328,0x30,0x13D,0x131,0x131,0x22B,0x130,0x130,0x13C,0x329,0x22C,0x230, - 0x230,0x13B,0x231,0x231,0x22D,0x330,0x38,0x145,0x139,0x139,0x233,0x138,0x138,0x144,0x331,0x234,0x238,0x238,0x143,0x239,0x239,0x235,0x338,0x40,0x14D,0x141,0x141,0x23B,0x140,0x140,0x14C,0x339,0x23C,0x240,0x240, - 0x14B,0x241,0x241,0x23D,0x340,0x48,0x155,0x149,0x149,0x243,0x148,0x148,0x154,0x341,0x244,0x248,0x248,0x153,0x249,0x249,0x245,0x348,0x50,0x15D,0x151,0x151,0x24B,0x150,0x150,0x15C,0x349,0x24C,0x250,0x250,0x15B, - 0x251,0x251,0x24D,0x350,0x58,0x165,0x159,0x159,0x253,0x158,0x158,0x164,0x351,0x254,0x258,0x258,0x163,0x259,0x259,0x255,0x358,0x60,0x16D,0x161,0x161,0x25B,0x160,0x160,0x16C,0x359,0x25C,0x260,0x260,0x16B,0x261, - 0x261,0x25D,0x360,0x68,0x175,0x169,0x169,0x263,0x168,0x168,0x174,0x361,0x264,0x268,0x268,0x173,0x269,0x269,0x265,0x368,0x70,0x17D,0x171,0x171,0x26B,0x170,0x170,0x17C,0x369,0x26C,0x270,0x270,0x17B,0x271,0x271, - 0x26D,0x370,0x78,0x78,0x179,0x179,0x273,0x178,0x178,0x26E,0x278 - }; - - // We don't have any useful hints to accelerate single channel ETC1, so we need to real-time encode from scratch. - bool transcode_uastc_to_etc1(const uastc_block& src_blk, void* pDst, uint32_t channel) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - -#if 0 - for (uint32_t individ = 0; individ < 2; individ++) - { - uint32_t overall_error = 0; - - for (uint32_t c = 0; c < 256; c++) - { - uint32_t best_err = UINT32_MAX; - uint32_t best_individ = 0; - uint32_t best_base = 0; - uint32_t best_sels[4] = { 0,0,0,0 }; - uint32_t best_table = 0; - - const uint32_t limit = individ ? 16 : 32; - - for (uint32_t table = 0; table < 8; table++) - { - for (uint32_t base = 0; base < limit; base++) - { - uint32_t total_e = 0; - uint32_t sels[4] = { 0,0,0,0 }; - - const uint32_t N = 4; - for (uint32_t i = 0; i < basisu::minimum(N, (256 - c)); i++) - { - uint32_t best_sel_e = UINT32_MAX; - uint32_t best_sel = 0; - - for (uint32_t sel = 0; sel < 4; sel++) - { - int val = individ ? ((base << 4) | base) : ((base << 3) | (base >> 2)); - val = clamp255(val + g_etc1_inten_tables[table][sel]); - - int e = iabs(val - clamp255(c + i)); - if (e < best_sel_e) - { - best_sel_e = e; - best_sel = sel; - } - - } // sel - - sels[i] = best_sel; - total_e += best_sel_e * best_sel_e; - - } // i - - if (total_e < best_err) - { - best_err = total_e; - best_individ = individ; - best_base = base; - memcpy(best_sels, sels, sizeof(best_sels)); - best_table = table; - } - - } // base - } // table - - //printf("%u: %u,%u,%u,%u,%u,%u,%u,%u\n", c, best_err, best_individ, best_table, best_base, best_sels[0], best_sels[1], best_sels[2], best_sels[3]); - - uint32_t encoded = best_table | (best_base << 3) | - (best_sels[0] << 8) | - (best_sels[1] << 10) | - (best_sels[2] << 12) | - (best_sels[3] << 14); - - printf("0x%X,", encoded); - - overall_error += best_err; - } // c - - printf("\n"); - printf("Overall error: %u\n", overall_error); - - } // individ - - exit(0); -#endif - -#if 0 - for (uint32_t individ = 0; individ < 2; individ++) - { - uint32_t overall_error = 0; - - for (uint32_t c = 0; c < 256; c++) - { - uint32_t best_err = UINT32_MAX; - uint32_t best_individ = 0; - uint32_t best_base = 0; - uint32_t best_sels[4] = { 0,0,0,0 }; - uint32_t best_table = 0; - - const uint32_t limit = individ ? 16 : 32; - - for (uint32_t table = 0; table < 8; table++) - { - for (uint32_t base = 0; base < limit; base++) - { - uint32_t total_e = 0; - uint32_t sels[4] = { 0,0,0,0 }; - - const uint32_t N = 1; - for (uint32_t i = 0; i < basisu::minimum(N, (256 - c)); i++) - { - uint32_t best_sel_e = UINT32_MAX; - uint32_t best_sel = 0; - - for (uint32_t sel = 0; sel < 4; sel++) - { - int val = individ ? ((base << 4) | base) : ((base << 3) | (base >> 2)); - val = clamp255(val + g_etc1_inten_tables[table][sel]); - - int e = iabs(val - clamp255(c + i)); - if (e < best_sel_e) - { - best_sel_e = e; - best_sel = sel; - } - - } // sel - - sels[i] = best_sel; - total_e += best_sel_e * best_sel_e; - - } // i - - if (total_e < best_err) - { - best_err = total_e; - best_individ = individ; - best_base = base; - memcpy(best_sels, sels, sizeof(best_sels)); - best_table = table; - } - - } // base - } // table - - //printf("%u: %u,%u,%u,%u,%u,%u,%u,%u\n", c, best_err, best_individ, best_table, best_base, best_sels[0], best_sels[1], best_sels[2], best_sels[3]); - - uint32_t encoded = best_table | (best_base << 3) | - (best_sels[0] << 8) | - (best_sels[1] << 10) | - (best_sels[2] << 12) | - (best_sels[3] << 14); - - printf("0x%X,", encoded); - - overall_error += best_err; - } // c - - printf("\n"); - printf("Overall error: %u\n", overall_error); - - } // individ - - exit(0); -#endif - - decoder_etc_block& dst_blk = *static_cast(pDst); - - if (unpacked_src_blk.m_mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - const uint32_t y = unpacked_src_blk.m_solid_color[channel]; - const uint32_t encoded_config = g_etc1_y_solid_block_configs[y]; - - const uint32_t base = encoded_config & 31; - const uint32_t sel = (encoded_config >> 5) & 3; - const uint32_t table = encoded_config >> 7; - - dst_blk.m_bytes[3] = (uint8_t)(2 | (table << 5) | (table << 2)); - - dst_blk.m_bytes[0] = (uint8_t)(base << 3); - dst_blk.m_bytes[1] = (uint8_t)(base << 3); - dst_blk.m_bytes[2] = (uint8_t)(base << 3); - - memcpy(dst_blk.m_bytes + 4, &s_etc1_solid_selectors[sel][0], 4); - return true; - } - - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - uint8_t block_y[4][4]; - for (uint32_t i = 0; i < 16; i++) - ((uint8_t*)block_y)[i] = ((color32*)block_pixels)[i][channel]; - - int upper_avg, lower_avg, left_avg, right_avg; - bool flip = pack_etc1_y_estimate_flipped(&block_y[0][0], upper_avg, lower_avg, left_avg, right_avg); - - // non-flipped: | | - // vs. - // flipped: -- - // -- - - uint32_t low[2] = { 255, 255 }, high[2] = { 0, 0 }; - - if (flip) - { - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t v = block_y[y][x]; - low[0] = basisu::minimum(low[0], v); - high[0] = basisu::maximum(high[0], v); - } - } - for (uint32_t y = 2; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const uint32_t v = block_y[y][x]; - low[1] = basisu::minimum(low[1], v); - high[1] = basisu::maximum(high[1], v); - } - } - } - else - { - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - const uint32_t v = block_y[y][x]; - low[0] = basisu::minimum(low[0], v); - high[0] = basisu::maximum(high[0], v); - } - } - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 2; x < 4; x++) - { - const uint32_t v = block_y[y][x]; - low[1] = basisu::minimum(low[1], v); - high[1] = basisu::maximum(high[1], v); - } - } - } - - const uint32_t range[2] = { high[0] - low[0], high[1] - low[1] }; - - dst_blk.m_bytes[3] = (uint8_t)((int)flip); - - if ((range[0] <= 3) && (range[1] <= 3)) - { - // This is primarily for better gradients. - dst_blk.m_bytes[0] = 0; - dst_blk.m_bytes[1] = 0; - dst_blk.m_bytes[2] = 0; - - uint16_t l_bitmask = 0, h_bitmask = 0; - - for (uint32_t subblock = 0; subblock < 2; subblock++) - { - const uint32_t encoded = (range[subblock] == 0) ? g_etc1_y_solid_block_1i_configs[low[subblock]] : ((range[subblock] < 2) ? g_etc1_y_solid_block_2i_configs[low[subblock]] : g_etc1_y_solid_block_4i_configs[low[subblock]]); - - const uint32_t table = encoded & 7; - const uint32_t base = (encoded >> 3) & 31; - assert(base <= 15); - const uint32_t sels[4] = { (encoded >> 8) & 3, (encoded >> 10) & 3, (encoded >> 12) & 3, (encoded >> 14) & 3 }; - - dst_blk.m_bytes[3] |= (uint8_t)(table << (subblock ? 2 : 5)); - - const uint32_t sv = base << (subblock ? 0 : 4); - dst_blk.m_bytes[0] |= (uint8_t)(sv); - dst_blk.m_bytes[1] |= (uint8_t)(sv); - dst_blk.m_bytes[2] |= (uint8_t)(sv); - - if (flip) - { - uint32_t ofs = subblock * 2; - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t t = block_y[y + subblock * 2][x]; - assert(t >= low[subblock] && t <= high[subblock]); - t -= low[subblock]; - assert(t <= 3); - - t = g_selector_index_to_etc1[sels[t]]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ofs += 4; - } - - ofs = (int)ofs + 1 - 4 * 4; - } - } - else - { - uint32_t ofs = (subblock * 2) * 4; - for (uint32_t x = 0; x < 2; x++) - { - for (uint32_t y = 0; y < 4; y++) - { - uint32_t t = block_y[y][x + subblock * 2]; - assert(t >= low[subblock] && t <= high[subblock]); - t -= low[subblock]; - assert(t <= 3); - - t = g_selector_index_to_etc1[sels[t]]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ++ofs; - } - } - } - } // subblock - - dst_blk.m_bytes[7] = (uint8_t)(l_bitmask); - dst_blk.m_bytes[6] = (uint8_t)(l_bitmask >> 8); - dst_blk.m_bytes[5] = (uint8_t)(h_bitmask); - dst_blk.m_bytes[4] = (uint8_t)(h_bitmask >> 8); - - return true; - } - - uint32_t y0 = ((flip ? upper_avg : left_avg) * 31 + 127) / 255; - uint32_t y1 = ((flip ? lower_avg : right_avg) * 31 + 127) / 255; - - bool diff = true; - - int dy = y1 - y0; - - if ((dy < cETC1ColorDeltaMin) || (dy > cETC1ColorDeltaMax)) - { - diff = false; - - y0 = ((flip ? upper_avg : left_avg) * 15 + 127) / 255; - y1 = ((flip ? lower_avg : right_avg) * 15 + 127) / 255; - - dst_blk.m_bytes[0] = (uint8_t)(y1 | (y0 << 4)); - dst_blk.m_bytes[1] = (uint8_t)(y1 | (y0 << 4)); - dst_blk.m_bytes[2] = (uint8_t)(y1 | (y0 << 4)); - } - else - { - dy = basisu::clamp(dy, cETC1ColorDeltaMin, cETC1ColorDeltaMax); - - y1 = y0 + dy; - - if (dy < 0) dy += 8; - - dst_blk.m_bytes[0] = (uint8_t)((y0 << 3) | dy); - dst_blk.m_bytes[1] = (uint8_t)((y0 << 3) | dy); - dst_blk.m_bytes[2] = (uint8_t)((y0 << 3) | dy); - - dst_blk.m_bytes[3] |= 2; - } - - const uint32_t base_y[2] = { diff ? ((y0 << 3) | (y0 >> 2)) : ((y0 << 4) | y0), diff ? ((y1 << 3) | (y1 >> 2)) : ((y1 << 4) | y1) }; - - uint32_t enc_range[2]; - for (uint32_t subset = 0; subset < 2; subset++) - { - const int pos = basisu::iabs((int)high[subset] - (int)base_y[subset]); - const int neg = basisu::iabs((int)base_y[subset] - (int)low[subset]); - - enc_range[subset] = basisu::maximum(pos, neg); - } - - uint16_t l_bitmask = 0, h_bitmask = 0; - for (uint32_t subblock = 0; subblock < 2; subblock++) - { - if ((!diff) && (range[subblock] <= 3)) - { - const uint32_t encoded = (range[subblock] == 0) ? g_etc1_y_solid_block_1i_configs[low[subblock]] : ((range[subblock] < 2) ? g_etc1_y_solid_block_2i_configs[low[subblock]] : g_etc1_y_solid_block_4i_configs[low[subblock]]); - - const uint32_t table = encoded & 7; - const uint32_t base = (encoded >> 3) & 31; - assert(base <= 15); - const uint32_t sels[4] = { (encoded >> 8) & 3, (encoded >> 10) & 3, (encoded >> 12) & 3, (encoded >> 14) & 3 }; - - dst_blk.m_bytes[3] |= (uint8_t)(table << (subblock ? 2 : 5)); - - const uint32_t mask = ~(0xF << (subblock ? 0 : 4)); - - dst_blk.m_bytes[0] &= mask; - dst_blk.m_bytes[1] &= mask; - dst_blk.m_bytes[2] &= mask; - - const uint32_t sv = base << (subblock ? 0 : 4); - dst_blk.m_bytes[0] |= (uint8_t)(sv); - dst_blk.m_bytes[1] |= (uint8_t)(sv); - dst_blk.m_bytes[2] |= (uint8_t)(sv); - - if (flip) - { - uint32_t ofs = subblock * 2; - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t t = block_y[y + subblock * 2][x]; - assert(t >= low[subblock] && t <= high[subblock]); - t -= low[subblock]; - assert(t <= 3); - - t = g_selector_index_to_etc1[sels[t]]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ofs += 4; - } - - ofs = (int)ofs + 1 - 4 * 4; - } - } - else - { - uint32_t ofs = (subblock * 2) * 4; - for (uint32_t x = 0; x < 2; x++) - { - for (uint32_t y = 0; y < 4; y++) - { - uint32_t t = block_y[y][x + subblock * 2]; - assert(t >= low[subblock] && t <= high[subblock]); - t -= low[subblock]; - assert(t <= 3); - - t = g_selector_index_to_etc1[sels[t]]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ++ofs; - } - } - } - - continue; - } // if - - uint32_t best_err = UINT32_MAX; - uint8_t best_sels[8]; - uint32_t best_inten = 0; - - const int base = base_y[subblock]; - - const int low_limit = -base; - const int high_limit = 255 - base; - - assert(low_limit <= 0 && high_limit >= 0); - - uint32_t inten_table_mask = 0xFF; - const uint32_t er = enc_range[subblock]; - // Each one of these tables is expensive to evaluate, so let's only examine the ones we know may be useful. - if (er <= 51) - { - inten_table_mask = 0xF; - - if (er > 22) - inten_table_mask &= ~(1 << 0); - - if ((er < 4) || (er > 39)) - inten_table_mask &= ~(1 << 1); - - if (er < 9) - inten_table_mask &= ~(1 << 2); - - if (er < 12) - inten_table_mask &= ~(1 << 3); - } - else - { - inten_table_mask &= ~((1 << 0) | (1 << 1)); - - if (er > 60) - inten_table_mask &= ~(1 << 2); - - if (er > 89) - inten_table_mask &= ~(1 << 3); - - if (er > 120) - inten_table_mask &= ~(1 << 4); - - if (er > 136) - inten_table_mask &= ~(1 << 5); - - if (er > 174) - inten_table_mask &= ~(1 << 6); - } - - for (uint32_t inten = 0; inten < 8; inten++) - { - if ((inten_table_mask & (1 << inten)) == 0) - continue; - - const int t0 = basisu::maximum(low_limit, g_etc1_inten_tables[inten][0]); - const int t1 = basisu::maximum(low_limit, g_etc1_inten_tables[inten][1]); - const int t2 = basisu::minimum(high_limit, g_etc1_inten_tables[inten][2]); - const int t3 = basisu::minimum(high_limit, g_etc1_inten_tables[inten][3]); - assert((t0 <= t1) && (t1 <= t2) && (t2 <= t3)); - - const int tv[4] = { t2, t3, t1, t0 }; - - const int thresh01 = t0 + t1; - const int thresh12 = t1 + t2; - const int thresh23 = t2 + t3; - - assert(thresh01 <= thresh12 && thresh12 <= thresh23); - - static const uint8_t s_table[4] = { 1, 0, 2, 3 }; - - uint32_t total_err = 0; - uint8_t sels[8]; - - if (flip) - { - if (((int)high[subblock] - base) * 2 < thresh01) - { - memset(sels, 3, 8); - - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const int delta = (int)block_y[y + subblock * 2][x] - base; - - const uint32_t c = 3; - - uint32_t e = basisu::iabs(tv[c] - delta); - total_err += e * e; - } - if (total_err >= best_err) - break; - } - } - else if (((int)low[subblock] - base) * 2 >= thresh23) - { - memset(sels, 1, 8); - - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const int delta = (int)block_y[y + subblock * 2][x] - base; - - const uint32_t c = 1; - - uint32_t e = basisu::iabs(tv[c] - delta); - total_err += e * e; - } - if (total_err >= best_err) - break; - } - } - else - { - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - const int delta = (int)block_y[y + subblock * 2][x] - base; - const int delta2 = delta * 2; - - uint32_t c = s_table[(delta2 < thresh01) + (delta2 < thresh12) + (delta2 < thresh23)]; - sels[y * 4 + x] = (uint8_t)c; - - uint32_t e = basisu::iabs(tv[c] - delta); - total_err += e * e; - } - if (total_err >= best_err) - break; - } - } - } - else - { - if (((int)high[subblock] - base) * 2 < thresh01) - { - memset(sels, 3, 8); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - const int delta = (int)block_y[y][x + subblock * 2] - base; - - const uint32_t c = 3; - - uint32_t e = basisu::iabs(tv[c] - delta); - total_err += e * e; - } - if (total_err >= best_err) - break; - } - } - else if (((int)low[subblock] - base) * 2 >= thresh23) - { - memset(sels, 1, 8); - - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - const int delta = (int)block_y[y][x + subblock * 2] - base; - - const uint32_t c = 1; - - uint32_t e = basisu::iabs(tv[c] - delta); - total_err += e * e; - } - if (total_err >= best_err) - break; - } - } - else - { - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 2; x++) - { - const int delta = (int)block_y[y][x + subblock * 2] - base; - const int delta2 = delta * 2; - - uint32_t c = s_table[(delta2 < thresh01) + (delta2 < thresh12) + (delta2 < thresh23)]; - sels[y * 2 + x] = (uint8_t)c; - - uint32_t e = basisu::iabs(tv[c] - delta); - total_err += e * e; - } - if (total_err >= best_err) - break; - } - } - } - - if (total_err < best_err) - { - best_err = total_err; - best_inten = inten; - memcpy(best_sels, sels, 8); - } - - } // inten - - //g_inten_hist[best_inten][enc_range[subblock]]++; - - dst_blk.m_bytes[3] |= (uint8_t)(best_inten << (subblock ? 2 : 5)); - - if (flip) - { - uint32_t ofs = subblock * 2; - for (uint32_t y = 0; y < 2; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t t = best_sels[y * 4 + x]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ofs += 4; - } - - ofs = (int)ofs + 1 - 4 * 4; - } - } - else - { - uint32_t ofs = (subblock * 2) * 4; - for (uint32_t x = 0; x < 2; x++) - { - for (uint32_t y = 0; y < 4; y++) - { - uint32_t t = best_sels[y * 2 + x]; - - assert(ofs < 16); - l_bitmask |= ((t & 1) << ofs); - h_bitmask |= ((t >> 1) << ofs); - ++ofs; - } - } - } - - } // subblock - - dst_blk.m_bytes[7] = (uint8_t)(l_bitmask); - dst_blk.m_bytes[6] = (uint8_t)(l_bitmask >> 8); - dst_blk.m_bytes[5] = (uint8_t)(h_bitmask); - dst_blk.m_bytes[4] = (uint8_t)(h_bitmask >> 8); - - return true; - } - - const uint32_t ETC2_EAC_MIN_VALUE_SELECTOR = 3, ETC2_EAC_MAX_VALUE_SELECTOR = 7; - - void transcode_uastc_to_etc2_eac_a8(unpacked_uastc_block& unpacked_src_blk, color32 block_pixels[4][4], void* pDst) - { - eac_block& dst = *static_cast(pDst); - const color32* pSrc_pixels = &block_pixels[0][0]; - - if ((!g_uastc_mode_has_alpha[unpacked_src_blk.m_mode]) || (unpacked_src_blk.m_mode == UASTC_MODE_INDEX_SOLID_COLOR)) - { - const uint32_t a = (unpacked_src_blk.m_mode == UASTC_MODE_INDEX_SOLID_COLOR) ? unpacked_src_blk.m_solid_color[3] : 255; - - dst.m_base = a; - dst.m_table = 13; - dst.m_multiplier = 1; - - memcpy(dst.m_selectors, g_etc2_eac_a8_sel4, sizeof(g_etc2_eac_a8_sel4)); - - return; - } - - uint32_t min_a = 255, max_a = 0; - for (uint32_t i = 0; i < 16; i++) - { - min_a = basisu::minimum(min_a, pSrc_pixels[i].a); - max_a = basisu::maximum(max_a, pSrc_pixels[i].a); - } - - if (min_a == max_a) - { - dst.m_base = min_a; - dst.m_table = 13; - dst.m_multiplier = 1; - - memcpy(dst.m_selectors, g_etc2_eac_a8_sel4, sizeof(g_etc2_eac_a8_sel4)); - return; - } - - const uint32_t table = unpacked_src_blk.m_etc2_hints & 0xF; - const int multiplier = unpacked_src_blk.m_etc2_hints >> 4; - - assert(multiplier >= 1); - - dst.m_multiplier = multiplier; - dst.m_table = table; - - const float range = (float)(g_eac_modifier_table[dst.m_table][ETC2_EAC_MAX_VALUE_SELECTOR] - g_eac_modifier_table[dst.m_table][ETC2_EAC_MIN_VALUE_SELECTOR]); - const int center = (int)roundf(basisu::lerp((float)min_a, (float)max_a, (float)(0 - g_eac_modifier_table[dst.m_table][ETC2_EAC_MIN_VALUE_SELECTOR]) / range)); - - dst.m_base = center; - - const int8_t* pTable = &g_eac_modifier_table[dst.m_table][0]; - - uint32_t vals[8]; - for (uint32_t j = 0; j < 8; j++) - vals[j] = clamp255(center + (pTable[j] * multiplier)); - - uint64_t sels = 0; - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t a = block_pixels[i & 3][i >> 2].a; - - const uint32_t err0 = (basisu::iabs(vals[0] - a) << 3) | 0; - const uint32_t err1 = (basisu::iabs(vals[1] - a) << 3) | 1; - const uint32_t err2 = (basisu::iabs(vals[2] - a) << 3) | 2; - const uint32_t err3 = (basisu::iabs(vals[3] - a) << 3) | 3; - const uint32_t err4 = (basisu::iabs(vals[4] - a) << 3) | 4; - const uint32_t err5 = (basisu::iabs(vals[5] - a) << 3) | 5; - const uint32_t err6 = (basisu::iabs(vals[6] - a) << 3) | 6; - const uint32_t err7 = (basisu::iabs(vals[7] - a) << 3) | 7; - - const uint32_t min_err = basisu::minimum(basisu::minimum(basisu::minimum(basisu::minimum(basisu::minimum(basisu::minimum(err0, err1, err2), err3), err4), err5), err6), err7); - - const uint64_t best_index = min_err & 7; - sels |= (best_index << (45 - i * 3)); - } - - dst.set_selector_bits(sels); - } - - bool transcode_uastc_to_etc2_rgba(const uastc_block& src_blk, void* pDst) - { - eac_block& dst_etc2_eac_a8_blk = *static_cast(pDst); - decoder_etc_block& dst_etc1_blk = static_cast(pDst)[1]; - - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - color32 block_pixels[4][4]; - if (unpacked_src_blk.m_mode != UASTC_MODE_INDEX_SOLID_COLOR) - { - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - } - - transcode_uastc_to_etc2_eac_a8(unpacked_src_blk, block_pixels, &dst_etc2_eac_a8_blk); - - transcode_uastc_to_etc1(unpacked_src_blk, block_pixels, &dst_etc1_blk); - - return true; - } - - static const uint8_t s_uastc5_to_bc1[32] = { 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1 }; - static const uint8_t s_uastc4_to_bc1[16] = { 0, 0, 0, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 1, 1, 1 }; - static const uint8_t s_uastc3_to_bc1[8] = { 0, 0, 2, 2, 3, 3, 1, 1 }; - static const uint8_t s_uastc2_to_bc1[4] = { 0, 2, 3, 1 }; - static const uint8_t s_uastc1_to_bc1[2] = { 0, 1 }; - const uint8_t* s_uastc_to_bc1_weights[6] = { nullptr, s_uastc1_to_bc1, s_uastc2_to_bc1, s_uastc3_to_bc1, s_uastc4_to_bc1, s_uastc5_to_bc1 }; - - void encode_bc4(void* pDst, const uint8_t* pPixels, uint32_t stride) - { - uint32_t min0_v, max0_v, min1_v, max1_v,min2_v, max2_v, min3_v, max3_v; - - { - min0_v = max0_v = pPixels[0 * stride]; - min1_v = max1_v = pPixels[1 * stride]; - min2_v = max2_v = pPixels[2 * stride]; - min3_v = max3_v = pPixels[3 * stride]; - } - - { - uint32_t v0 = pPixels[4 * stride]; min0_v = basisu::minimum(min0_v, v0); max0_v = basisu::maximum(max0_v, v0); - uint32_t v1 = pPixels[5 * stride]; min1_v = basisu::minimum(min1_v, v1); max1_v = basisu::maximum(max1_v, v1); - uint32_t v2 = pPixels[6 * stride]; min2_v = basisu::minimum(min2_v, v2); max2_v = basisu::maximum(max2_v, v2); - uint32_t v3 = pPixels[7 * stride]; min3_v = basisu::minimum(min3_v, v3); max3_v = basisu::maximum(max3_v, v3); - } - - { - uint32_t v0 = pPixels[8 * stride]; min0_v = basisu::minimum(min0_v, v0); max0_v = basisu::maximum(max0_v, v0); - uint32_t v1 = pPixels[9 * stride]; min1_v = basisu::minimum(min1_v, v1); max1_v = basisu::maximum(max1_v, v1); - uint32_t v2 = pPixels[10 * stride]; min2_v = basisu::minimum(min2_v, v2); max2_v = basisu::maximum(max2_v, v2); - uint32_t v3 = pPixels[11 * stride]; min3_v = basisu::minimum(min3_v, v3); max3_v = basisu::maximum(max3_v, v3); - } - - { - uint32_t v0 = pPixels[12 * stride]; min0_v = basisu::minimum(min0_v, v0); max0_v = basisu::maximum(max0_v, v0); - uint32_t v1 = pPixels[13 * stride]; min1_v = basisu::minimum(min1_v, v1); max1_v = basisu::maximum(max1_v, v1); - uint32_t v2 = pPixels[14 * stride]; min2_v = basisu::minimum(min2_v, v2); max2_v = basisu::maximum(max2_v, v2); - uint32_t v3 = pPixels[15 * stride]; min3_v = basisu::minimum(min3_v, v3); max3_v = basisu::maximum(max3_v, v3); - } - - const uint32_t min_v = basisu::minimum(min0_v, min1_v, min2_v, min3_v); - const uint32_t max_v = basisu::maximum(max0_v, max1_v, max2_v, max3_v); - - uint8_t* pDst_bytes = static_cast(pDst); - pDst_bytes[0] = (uint8_t)max_v; - pDst_bytes[1] = (uint8_t)min_v; - - if (max_v == min_v) - { - memset(pDst_bytes + 2, 0, 6); - return; - } - - const uint32_t delta = max_v - min_v; - - // min_v is now 0. Compute thresholds between values by scaling max_v. It's x14 because we're adding two x7 scale factors. - const int t0 = delta * 13; - const int t1 = delta * 11; - const int t2 = delta * 9; - const int t3 = delta * 7; - const int t4 = delta * 5; - const int t5 = delta * 3; - const int t6 = delta * 1; - - // BC4 floors in its divisions, which we compensate for with the 4 bias. - // This function is optimal for all possible inputs (i.e. it outputs the same results as checking all 8 values and choosing the closest one). - const int bias = 4 - min_v * 14; - - static const uint32_t s_tran0[8] = { 1U , 7U , 6U , 5U , 4U , 3U , 2U , 0U }; - static const uint32_t s_tran1[8] = { 1U << 3U, 7U << 3U, 6U << 3U, 5U << 3U, 4U << 3U, 3U << 3U, 2U << 3U, 0U << 3U }; - static const uint32_t s_tran2[8] = { 1U << 6U, 7U << 6U, 6U << 6U, 5U << 6U, 4U << 6U, 3U << 6U, 2U << 6U, 0U << 6U }; - static const uint32_t s_tran3[8] = { 1U << 9U, 7U << 9U, 6U << 9U, 5U << 9U, 4U << 9U, 3U << 9U, 2U << 9U, 0U << 9U }; - - uint64_t a0, a1, a2, a3; - { - const int v0 = pPixels[0 * stride] * 14 + bias; - const int v1 = pPixels[1 * stride] * 14 + bias; - const int v2 = pPixels[2 * stride] * 14 + bias; - const int v3 = pPixels[3 * stride] * 14 + bias; - a0 = s_tran0[(v0 >= t0) + (v0 >= t1) + (v0 >= t2) + (v0 >= t3) + (v0 >= t4) + (v0 >= t5) + (v0 >= t6)]; - a1 = s_tran1[(v1 >= t0) + (v1 >= t1) + (v1 >= t2) + (v1 >= t3) + (v1 >= t4) + (v1 >= t5) + (v1 >= t6)]; - a2 = s_tran2[(v2 >= t0) + (v2 >= t1) + (v2 >= t2) + (v2 >= t3) + (v2 >= t4) + (v2 >= t5) + (v2 >= t6)]; - a3 = s_tran3[(v3 >= t0) + (v3 >= t1) + (v3 >= t2) + (v3 >= t3) + (v3 >= t4) + (v3 >= t5) + (v3 >= t6)]; - } - - { - const int v0 = pPixels[4 * stride] * 14 + bias; - const int v1 = pPixels[5 * stride] * 14 + bias; - const int v2 = pPixels[6 * stride] * 14 + bias; - const int v3 = pPixels[7 * stride] * 14 + bias; - a0 |= (s_tran0[(v0 >= t0) + (v0 >= t1) + (v0 >= t2) + (v0 >= t3) + (v0 >= t4) + (v0 >= t5) + (v0 >= t6)] << 12U); - a1 |= (s_tran1[(v1 >= t0) + (v1 >= t1) + (v1 >= t2) + (v1 >= t3) + (v1 >= t4) + (v1 >= t5) + (v1 >= t6)] << 12U); - a2 |= (s_tran2[(v2 >= t0) + (v2 >= t1) + (v2 >= t2) + (v2 >= t3) + (v2 >= t4) + (v2 >= t5) + (v2 >= t6)] << 12U); - a3 |= (s_tran3[(v3 >= t0) + (v3 >= t1) + (v3 >= t2) + (v3 >= t3) + (v3 >= t4) + (v3 >= t5) + (v3 >= t6)] << 12U); - } - - { - const int v0 = pPixels[8 * stride] * 14 + bias; - const int v1 = pPixels[9 * stride] * 14 + bias; - const int v2 = pPixels[10 * stride] * 14 + bias; - const int v3 = pPixels[11 * stride] * 14 + bias; - a0 |= (((uint64_t)s_tran0[(v0 >= t0) + (v0 >= t1) + (v0 >= t2) + (v0 >= t3) + (v0 >= t4) + (v0 >= t5) + (v0 >= t6)]) << 24U); - a1 |= (((uint64_t)s_tran1[(v1 >= t0) + (v1 >= t1) + (v1 >= t2) + (v1 >= t3) + (v1 >= t4) + (v1 >= t5) + (v1 >= t6)]) << 24U); - a2 |= (((uint64_t)s_tran2[(v2 >= t0) + (v2 >= t1) + (v2 >= t2) + (v2 >= t3) + (v2 >= t4) + (v2 >= t5) + (v2 >= t6)]) << 24U); - a3 |= (((uint64_t)s_tran3[(v3 >= t0) + (v3 >= t1) + (v3 >= t2) + (v3 >= t3) + (v3 >= t4) + (v3 >= t5) + (v3 >= t6)]) << 24U); - } - - { - const int v0 = pPixels[12 * stride] * 14 + bias; - const int v1 = pPixels[13 * stride] * 14 + bias; - const int v2 = pPixels[14 * stride] * 14 + bias; - const int v3 = pPixels[15 * stride] * 14 + bias; - a0 |= (((uint64_t)s_tran0[(v0 >= t0) + (v0 >= t1) + (v0 >= t2) + (v0 >= t3) + (v0 >= t4) + (v0 >= t5) + (v0 >= t6)]) << 36U); - a1 |= (((uint64_t)s_tran1[(v1 >= t0) + (v1 >= t1) + (v1 >= t2) + (v1 >= t3) + (v1 >= t4) + (v1 >= t5) + (v1 >= t6)]) << 36U); - a2 |= (((uint64_t)s_tran2[(v2 >= t0) + (v2 >= t1) + (v2 >= t2) + (v2 >= t3) + (v2 >= t4) + (v2 >= t5) + (v2 >= t6)]) << 36U); - a3 |= (((uint64_t)s_tran3[(v3 >= t0) + (v3 >= t1) + (v3 >= t2) + (v3 >= t3) + (v3 >= t4) + (v3 >= t5) + (v3 >= t6)]) << 36U); - } - - const uint64_t f = a0 | a1 | a2 | a3; - - pDst_bytes[2] = (uint8_t)f; - pDst_bytes[3] = (uint8_t)(f >> 8U); - pDst_bytes[4] = (uint8_t)(f >> 16U); - pDst_bytes[5] = (uint8_t)(f >> 24U); - pDst_bytes[6] = (uint8_t)(f >> 32U); - pDst_bytes[7] = (uint8_t)(f >> 40U); - } - - static void bc1_find_sels(const color32 *pSrc_pixels, uint32_t lr, uint32_t lg, uint32_t lb, uint32_t hr, uint32_t hg, uint32_t hb, uint8_t sels[16]) - { - uint32_t block_r[4], block_g[4], block_b[4]; - - block_r[0] = (lr << 3) | (lr >> 2); block_g[0] = (lg << 2) | (lg >> 4); block_b[0] = (lb << 3) | (lb >> 2); - block_r[3] = (hr << 3) | (hr >> 2); block_g[3] = (hg << 2) | (hg >> 4); block_b[3] = (hb << 3) | (hb >> 2); - block_r[1] = (block_r[0] * 2 + block_r[3]) / 3; block_g[1] = (block_g[0] * 2 + block_g[3]) / 3; block_b[1] = (block_b[0] * 2 + block_b[3]) / 3; - block_r[2] = (block_r[3] * 2 + block_r[0]) / 3; block_g[2] = (block_g[3] * 2 + block_g[0]) / 3; block_b[2] = (block_b[3] * 2 + block_b[0]) / 3; - - int ar = block_r[3] - block_r[0], ag = block_g[3] - block_g[0], ab = block_b[3] - block_b[0]; - - int dots[4]; - for (uint32_t i = 0; i < 4; i++) - dots[i] = (int)block_r[i] * ar + (int)block_g[i] * ag + (int)block_b[i] * ab; - - int t0 = dots[0] + dots[1], t1 = dots[1] + dots[2], t2 = dots[2] + dots[3]; - - ar *= 2; ag *= 2; ab *= 2; - - for (uint32_t i = 0; i < 16; i++) - { - const int d = pSrc_pixels[i].r * ar + pSrc_pixels[i].g * ag + pSrc_pixels[i].b * ab; - static const uint8_t s_sels[4] = { 3, 2, 1, 0 }; - - // Rounding matters here! - // d <= t0: <=, not <, to the later LS step "sees" a wider range of selectors. It matters for quality. - sels[i] = s_sels[(d <= t0) + (d < t1) + (d < t2)]; - } - } - - static inline void bc1_find_sels_2(const color32* pSrc_pixels, uint32_t lr, uint32_t lg, uint32_t lb, uint32_t hr, uint32_t hg, uint32_t hb, uint8_t sels[16]) - { - uint32_t block_r[4], block_g[4], block_b[4]; - - block_r[0] = (lr << 3) | (lr >> 2); block_g[0] = (lg << 2) | (lg >> 4); block_b[0] = (lb << 3) | (lb >> 2); - block_r[3] = (hr << 3) | (hr >> 2); block_g[3] = (hg << 2) | (hg >> 4); block_b[3] = (hb << 3) | (hb >> 2); - block_r[1] = (block_r[0] * 2 + block_r[3]) / 3; block_g[1] = (block_g[0] * 2 + block_g[3]) / 3; block_b[1] = (block_b[0] * 2 + block_b[3]) / 3; - block_r[2] = (block_r[3] * 2 + block_r[0]) / 3; block_g[2] = (block_g[3] * 2 + block_g[0]) / 3; block_b[2] = (block_b[3] * 2 + block_b[0]) / 3; - - int ar = block_r[3] - block_r[0], ag = block_g[3] - block_g[0], ab = block_b[3] - block_b[0]; - - int dots[4]; - for (uint32_t i = 0; i < 4; i++) - dots[i] = (int)block_r[i] * ar + (int)block_g[i] * ag + (int)block_b[i] * ab; - - int t0 = dots[0] + dots[1], t1 = dots[1] + dots[2], t2 = dots[2] + dots[3]; - - ar *= 2; ag *= 2; ab *= 2; - - static const uint8_t s_sels[4] = { 3, 2, 1, 0 }; - - for (uint32_t i = 0; i < 16; i += 4) - { - const int d0 = pSrc_pixels[i+0].r * ar + pSrc_pixels[i+0].g * ag + pSrc_pixels[i+0].b * ab; - const int d1 = pSrc_pixels[i+1].r * ar + pSrc_pixels[i+1].g * ag + pSrc_pixels[i+1].b * ab; - const int d2 = pSrc_pixels[i+2].r * ar + pSrc_pixels[i+2].g * ag + pSrc_pixels[i+2].b * ab; - const int d3 = pSrc_pixels[i+3].r * ar + pSrc_pixels[i+3].g * ag + pSrc_pixels[i+3].b * ab; - - sels[i+0] = s_sels[(d0 <= t0) + (d0 < t1) + (d0 < t2)]; - sels[i+1] = s_sels[(d1 <= t0) + (d1 < t1) + (d1 < t2)]; - sels[i+2] = s_sels[(d2 <= t0) + (d2 < t1) + (d2 < t2)]; - sels[i+3] = s_sels[(d3 <= t0) + (d3 < t1) + (d3 < t2)]; - } - } - - struct vec3F { float c[3]; }; - - static bool compute_least_squares_endpoints_rgb(const color32* pColors, const uint8_t* pSelectors, vec3F* pXl, vec3F* pXh) - { - // Derived from bc7enc16's LS function. - // Least squares using normal equations: http://www.cs.cornell.edu/~bindel/class/cs3220-s12/notes/lec10.pdf - // I did this in matrix form first, expanded out all the ops, then optimized it a bit. - uint32_t uq00_r = 0, uq10_r = 0, ut_r = 0, uq00_g = 0, uq10_g = 0, ut_g = 0, uq00_b = 0, uq10_b = 0, ut_b = 0; - - // This table is: 9 * (w * w), 9 * ((1.0f - w) * w), 9 * ((1.0f - w) * (1.0f - w)) - // where w is [0,1/3,2/3,1]. 9 is the perfect multiplier. - static const uint32_t s_weight_vals[4] = { 0x000009, 0x010204, 0x040201, 0x090000 }; - - uint32_t weight_accum = 0; - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t r = pColors[i].c[0], g = pColors[i].c[1], b = pColors[i].c[2]; - const uint32_t sel = pSelectors[i]; - ut_r += r; - ut_g += g; - ut_b += b; - weight_accum += s_weight_vals[sel]; - uq00_r += sel * r; - uq00_g += sel * g; - uq00_b += sel * b; - } - - float q00_r = (float)uq00_r, q10_r = (float)uq10_r, t_r = (float)ut_r; - float q00_g = (float)uq00_g, q10_g = (float)uq10_g, t_g = (float)ut_g; - float q00_b = (float)uq00_b, q10_b = (float)uq10_b, t_b = (float)ut_b; - - q10_r = t_r * 3.0f - q00_r; - q10_g = t_g * 3.0f - q00_g; - q10_b = t_b * 3.0f - q00_b; - - float z00 = (float)((weight_accum >> 16) & 0xFF); - float z10 = (float)((weight_accum >> 8) & 0xFF); - float z11 = (float)(weight_accum & 0xFF); - float z01 = z10; - - float det = z00 * z11 - z01 * z10; - if (fabs(det) < 1e-8f) - return false; - - det = 3.0f / det; - - float iz00, iz01, iz10, iz11; - iz00 = z11 * det; - iz01 = -z01 * det; - iz10 = -z10 * det; - iz11 = z00 * det; - - pXl->c[0] = iz00 * q00_r + iz01 * q10_r; pXh->c[0] = iz10 * q00_r + iz11 * q10_r; - pXl->c[1] = iz00 * q00_g + iz01 * q10_g; pXh->c[1] = iz10 * q00_g + iz11 * q10_g; - pXl->c[2] = iz00 * q00_b + iz01 * q10_b; pXh->c[2] = iz10 * q00_b + iz11 * q10_b; - - // Check and fix channel singularities - might not be needed, but is in UASTC's encoder. - for (uint32_t c = 0; c < 3; c++) - { - if ((pXl->c[c] < 0.0f) || (pXh->c[c] > 255.0f)) - { - uint32_t lo_v = UINT32_MAX, hi_v = 0; - for (uint32_t i = 0; i < 16; i++) - { - lo_v = basisu::minimumu(lo_v, pColors[i].c[c]); - hi_v = basisu::maximumu(hi_v, pColors[i].c[c]); - } - - if (lo_v == hi_v) - { - pXl->c[c] = (float)lo_v; - pXh->c[c] = (float)hi_v; - } - } - } - - return true; - } - - void encode_bc1_solid_block(void* pDst, uint32_t fr, uint32_t fg, uint32_t fb) - { - dxt1_block* pDst_block = static_cast(pDst); - - uint32_t mask = 0xAA; - uint32_t max16 = (g_bc1_match5_equals_1[fr].m_hi << 11) | (g_bc1_match6_equals_1[fg].m_hi << 5) | g_bc1_match5_equals_1[fb].m_hi; - uint32_t min16 = (g_bc1_match5_equals_1[fr].m_lo << 11) | (g_bc1_match6_equals_1[fg].m_lo << 5) | g_bc1_match5_equals_1[fb].m_lo; - - if (min16 == max16) - { - // Always forbid 3 color blocks - // This is to guarantee that BC3 blocks never use punchthrough alpha (3 color) mode, which isn't supported on some (all?) GPU's. - mask = 0; - - // Make l > h - if (min16 > 0) - min16--; - else - { - // l = h = 0 - assert(min16 == max16 && max16 == 0); - - max16 = 1; - min16 = 0; - mask = 0x55; - } - - assert(max16 > min16); - } - - if (max16 < min16) - { - std::swap(max16, min16); - mask ^= 0x55; - } - - pDst_block->set_low_color(static_cast(max16)); - pDst_block->set_high_color(static_cast(min16)); - pDst_block->m_selectors[0] = static_cast(mask); - pDst_block->m_selectors[1] = static_cast(mask); - pDst_block->m_selectors[2] = static_cast(mask); - pDst_block->m_selectors[3] = static_cast(mask); - } - - static inline uint8_t to_5(uint32_t v) { v = v * 31 + 128; return (uint8_t)((v + (v >> 8)) >> 8); } - static inline uint8_t to_6(uint32_t v) { v = v * 63 + 128; return (uint8_t)((v + (v >> 8)) >> 8); } - - // Good references: squish library, stb_dxt. - void encode_bc1(void* pDst, const uint8_t* pPixels, uint32_t flags) - { - const color32* pSrc_pixels = (const color32*)pPixels; - dxt1_block* pDst_block = static_cast(pDst); - - int avg_r = -1, avg_g = 0, avg_b = 0; - int lr = 0, lg = 0, lb = 0, hr = 0, hg = 0, hb = 0; - uint8_t sels[16]; - - const bool use_sels = (flags & cEncodeBC1UseSelectors) != 0; - if (use_sels) - { - // Caller is jamming in their own selectors for us to try. - const uint32_t s = pDst_block->m_selectors[0] | (pDst_block->m_selectors[1] << 8) | (pDst_block->m_selectors[2] << 16) | (pDst_block->m_selectors[3] << 24); - - static const uint8_t s_sel_tran[4] = { 0, 3, 1, 2 }; - - for (uint32_t i = 0; i < 16; i++) - sels[i] = s_sel_tran[(s >> (i * 2)) & 3]; - } - else - { - const uint32_t fr = pSrc_pixels[0].r, fg = pSrc_pixels[0].g, fb = pSrc_pixels[0].b; - - uint32_t j; - for (j = 1; j < 16; j++) - if ((pSrc_pixels[j].r != fr) || (pSrc_pixels[j].g != fg) || (pSrc_pixels[j].b != fb)) - break; - - if (j == 16) - { - encode_bc1_solid_block(pDst, fr, fg, fb); - return; - } - - // Select 2 colors along the principle axis. (There must be a faster/simpler way.) - int total_r = fr, total_g = fg, total_b = fb; - int max_r = fr, max_g = fg, max_b = fb; - int min_r = fr, min_g = fg, min_b = fb; - for (uint32_t i = 1; i < 16; i++) - { - const int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - max_r = basisu::maximum(max_r, r); max_g = basisu::maximum(max_g, g); max_b = basisu::maximum(max_b, b); - min_r = basisu::minimum(min_r, r); min_g = basisu::minimum(min_g, g); min_b = basisu::minimum(min_b, b); - total_r += r; total_g += g; total_b += b; - } - - avg_r = (total_r + 8) >> 4; - avg_g = (total_g + 8) >> 4; - avg_b = (total_b + 8) >> 4; - - int icov[6] = { 0, 0, 0, 0, 0, 0 }; - for (uint32_t i = 0; i < 16; i++) - { - int r = (int)pSrc_pixels[i].r - avg_r; - int g = (int)pSrc_pixels[i].g - avg_g; - int b = (int)pSrc_pixels[i].b - avg_b; - icov[0] += r * r; - icov[1] += r * g; - icov[2] += r * b; - icov[3] += g * g; - icov[4] += g * b; - icov[5] += b * b; - } - - float cov[6]; - for (uint32_t i = 0; i < 6; i++) - cov[i] = static_cast(icov[i])* (1.0f / 255.0f); - -#if 0 - // Seems silly to use full PCA to choose 2 colors. The diff in avg. PSNR between using PCA vs. not is small (~.025 difference). - // TODO: Try 2 or 3 different normalized diagonal vectors, choose the one that results in the largest dot delta - int saxis_r = max_r - min_r; - int saxis_g = max_g - min_g; - int saxis_b = max_b - min_b; -#else - float xr = (float)(max_r - min_r); - float xg = (float)(max_g - min_g); - float xb = (float)(max_b - min_b); - //float xr = (float)(max_r - avg_r); // max-avg is nearly the same, and doesn't require computing min's - //float xg = (float)(max_g - avg_g); - //float xb = (float)(max_b - avg_b); - for (uint32_t power_iter = 0; power_iter < 4; power_iter++) - { - float r = xr * cov[0] + xg * cov[1] + xb * cov[2]; - float g = xr * cov[1] + xg * cov[3] + xb * cov[4]; - float b = xr * cov[2] + xg * cov[4] + xb * cov[5]; - xr = r; xg = g; xb = b; - } - - float k = basisu::maximum(fabsf(xr), fabsf(xg), fabsf(xb)); - int saxis_r = 306, saxis_g = 601, saxis_b = 117; - if (k >= 2) - { - float m = 1024.0f / k; - saxis_r = (int)(xr * m); - saxis_g = (int)(xg * m); - saxis_b = (int)(xb * m); - } -#endif - - int low_dot = INT_MAX, high_dot = INT_MIN, low_c = 0, high_c = 0; - for (uint32_t i = 0; i < 16; i++) - { - int dot = pSrc_pixels[i].r * saxis_r + pSrc_pixels[i].g * saxis_g + pSrc_pixels[i].b * saxis_b; - if (dot < low_dot) - { - low_dot = dot; - low_c = i; - } - if (dot > high_dot) - { - high_dot = dot; - high_c = i; - } - } - - lr = to_5(pSrc_pixels[low_c].r); - lg = to_6(pSrc_pixels[low_c].g); - lb = to_5(pSrc_pixels[low_c].b); - - hr = to_5(pSrc_pixels[high_c].r); - hg = to_6(pSrc_pixels[high_c].g); - hb = to_5(pSrc_pixels[high_c].b); - - bc1_find_sels(pSrc_pixels, lr, lg, lb, hr, hg, hb, sels); - } // if (use_sels) - - const uint32_t total_ls_passes = (flags & cEncodeBC1HigherQuality) ? 3 : (flags & cEncodeBC1HighQuality ? 2 : 1); - for (uint32_t ls_pass = 0; ls_pass < total_ls_passes; ls_pass++) - { - // This is where the real magic happens. We have an array of candidate selectors, so let's use least squares to compute the optimal low/high endpoint colors. - vec3F xl, xh; - if (!compute_least_squares_endpoints_rgb(pSrc_pixels, sels, &xl, &xh)) - { - if (avg_r < 0) - { - int total_r = 0, total_g = 0, total_b = 0; - for (uint32_t i = 0; i < 16; i++) - { - total_r += pSrc_pixels[i].r; - total_g += pSrc_pixels[i].g; - total_b += pSrc_pixels[i].b; - } - - avg_r = (total_r + 8) >> 4; - avg_g = (total_g + 8) >> 4; - avg_b = (total_b + 8) >> 4; - } - - // All selectors equal - treat it as a solid block which should always be equal or better. - lr = g_bc1_match5_equals_1[avg_r].m_hi; - lg = g_bc1_match6_equals_1[avg_g].m_hi; - lb = g_bc1_match5_equals_1[avg_b].m_hi; - - hr = g_bc1_match5_equals_1[avg_r].m_lo; - hg = g_bc1_match6_equals_1[avg_g].m_lo; - hb = g_bc1_match5_equals_1[avg_b].m_lo; - - // In high/higher quality mode, let it try again in case the optimal tables have caused the sels to diverge. - } - else - { - lr = basisu::clamp((int)((xl.c[0]) * (31.0f / 255.0f) + .5f), 0, 31); - lg = basisu::clamp((int)((xl.c[1]) * (63.0f / 255.0f) + .5f), 0, 63); - lb = basisu::clamp((int)((xl.c[2]) * (31.0f / 255.0f) + .5f), 0, 31); - - hr = basisu::clamp((int)((xh.c[0]) * (31.0f / 255.0f) + .5f), 0, 31); - hg = basisu::clamp((int)((xh.c[1]) * (63.0f / 255.0f) + .5f), 0, 63); - hb = basisu::clamp((int)((xh.c[2]) * (31.0f / 255.0f) + .5f), 0, 31); - } - - bc1_find_sels(pSrc_pixels, lr, lg, lb, hr, hg, hb, sels); - } - - uint32_t lc16 = dxt1_block::pack_unscaled_color(lr, lg, lb); - uint32_t hc16 = dxt1_block::pack_unscaled_color(hr, hg, hb); - - // Always forbid 3 color blocks - if (lc16 == hc16) - { - uint8_t mask = 0; - - // Make l > h - if (hc16 > 0) - hc16--; - else - { - // lc16 = hc16 = 0 - assert(lc16 == hc16 && hc16 == 0); - - hc16 = 0; - lc16 = 1; - mask = 0x55; // select hc16 - } - - assert(lc16 > hc16); - pDst_block->set_low_color(static_cast(lc16)); - pDst_block->set_high_color(static_cast(hc16)); - - pDst_block->m_selectors[0] = mask; - pDst_block->m_selectors[1] = mask; - pDst_block->m_selectors[2] = mask; - pDst_block->m_selectors[3] = mask; - } - else - { - uint8_t invert_mask = 0; - if (lc16 < hc16) - { - std::swap(lc16, hc16); - invert_mask = 0x55; - } - - assert(lc16 > hc16); - pDst_block->set_low_color((uint16_t)lc16); - pDst_block->set_high_color((uint16_t)hc16); - - uint32_t packed_sels = 0; - static const uint8_t s_sel_trans[4] = { 0, 2, 3, 1 }; - for (uint32_t i = 0; i < 16; i++) - packed_sels |= ((uint32_t)s_sel_trans[sels[i]] << (i * 2)); - - pDst_block->m_selectors[0] = (uint8_t)packed_sels ^ invert_mask; - pDst_block->m_selectors[1] = (uint8_t)(packed_sels >> 8) ^ invert_mask; - pDst_block->m_selectors[2] = (uint8_t)(packed_sels >> 16) ^ invert_mask; - pDst_block->m_selectors[3] = (uint8_t)(packed_sels >> 24) ^ invert_mask; - } - } - - void encode_bc1_alt(void* pDst, const uint8_t* pPixels, uint32_t flags) - { - const color32* pSrc_pixels = (const color32*)pPixels; - dxt1_block* pDst_block = static_cast(pDst); - - int avg_r = -1, avg_g = 0, avg_b = 0; - int lr = 0, lg = 0, lb = 0, hr = 0, hg = 0, hb = 0; - uint8_t sels[16]; - - const bool use_sels = (flags & cEncodeBC1UseSelectors) != 0; - if (use_sels) - { - // Caller is jamming in their own selectors for us to try. - const uint32_t s = pDst_block->m_selectors[0] | (pDst_block->m_selectors[1] << 8) | (pDst_block->m_selectors[2] << 16) | (pDst_block->m_selectors[3] << 24); - - static const uint8_t s_sel_tran[4] = { 0, 3, 1, 2 }; - - for (uint32_t i = 0; i < 16; i++) - sels[i] = s_sel_tran[(s >> (i * 2)) & 3]; - } - else - { - const uint32_t fr = pSrc_pixels[0].r, fg = pSrc_pixels[0].g, fb = pSrc_pixels[0].b; - - uint32_t j; - for (j = 1; j < 16; j++) - if ((pSrc_pixels[j].r != fr) || (pSrc_pixels[j].g != fg) || (pSrc_pixels[j].b != fb)) - break; - - if (j == 16) - { - encode_bc1_solid_block(pDst, fr, fg, fb); - return; - } - - // Select 2 colors along the principle axis. (There must be a faster/simpler way.) - int total_r = fr, total_g = fg, total_b = fb; - int max_r = fr, max_g = fg, max_b = fb; - int min_r = fr, min_g = fg, min_b = fb; - uint32_t grayscale_flag = (fr == fg) && (fr == fb); - for (uint32_t i = 1; i < 16; i++) - { - const int r = pSrc_pixels[i].r, g = pSrc_pixels[i].g, b = pSrc_pixels[i].b; - grayscale_flag &= ((r == g) && (r == b)); - max_r = basisu::maximum(max_r, r); max_g = basisu::maximum(max_g, g); max_b = basisu::maximum(max_b, b); - min_r = basisu::minimum(min_r, r); min_g = basisu::minimum(min_g, g); min_b = basisu::minimum(min_b, b); - total_r += r; total_g += g; total_b += b; - } - - if (grayscale_flag) - { - // Grayscale blocks are a common enough case to specialize. - if ((max_r - min_r) < 2) - { - lr = lb = hr = hb = to_5(fr); - lg = hg = to_6(fr); - } - else - { - lr = lb = to_5(min_r); - lg = to_6(min_r); - - hr = hb = to_5(max_r); - hg = to_6(max_r); - } - } - else - { - avg_r = (total_r + 8) >> 4; - avg_g = (total_g + 8) >> 4; - avg_b = (total_b + 8) >> 4; - - // Find the shortest vector from a AABB corner to the block's average color. - // This is to help avoid outliers. - - uint32_t dist[3][2]; - dist[0][0] = basisu::square(min_r - avg_r) << 3; dist[0][1] = basisu::square(max_r - avg_r) << 3; - dist[1][0] = basisu::square(min_g - avg_g) << 3; dist[1][1] = basisu::square(max_g - avg_g) << 3; - dist[2][0] = basisu::square(min_b - avg_b) << 3; dist[2][1] = basisu::square(max_b - avg_b) << 3; - - uint32_t min_d0 = (dist[0][0] + dist[1][0] + dist[2][0]); - uint32_t d4 = (dist[0][0] + dist[1][0] + dist[2][1]) | 4; - min_d0 = basisu::minimum(min_d0, d4); - - uint32_t min_d1 = (dist[0][1] + dist[1][0] + dist[2][0]) | 1; - uint32_t d5 = (dist[0][1] + dist[1][0] + dist[2][1]) | 5; - min_d1 = basisu::minimum(min_d1, d5); - - uint32_t d2 = (dist[0][0] + dist[1][1] + dist[2][0]) | 2; - min_d0 = basisu::minimum(min_d0, d2); - - uint32_t d3 = (dist[0][1] + dist[1][1] + dist[2][0]) | 3; - min_d1 = basisu::minimum(min_d1, d3); - - uint32_t d6 = (dist[0][0] + dist[1][1] + dist[2][1]) | 6; - min_d0 = basisu::minimum(min_d0, d6); - - uint32_t d7 = (dist[0][1] + dist[1][1] + dist[2][1]) | 7; - min_d1 = basisu::minimum(min_d1, d7); - - uint32_t min_d = basisu::minimum(min_d0, min_d1); - uint32_t best_i = min_d & 7; - - int delta_r = (best_i & 1) ? (max_r - avg_r) : (avg_r - min_r); - int delta_g = (best_i & 2) ? (max_g - avg_g) : (avg_g - min_g); - int delta_b = (best_i & 4) ? (max_b - avg_b) : (avg_b - min_b); - - // Note: if delta_r/g/b==0, we actually want to choose a single color, so the block average color optimization kicks in. - uint32_t low_c = 0, high_c = 0; - if ((delta_r | delta_g | delta_b) != 0) - { - // Now we have a smaller AABB going from the block's average color to a cornerpoint of the larger AABB. - // Project all pixels colors along the 4 vectors going from a smaller AABB cornerpoint to the opposite cornerpoint, find largest projection. - // One of these vectors will be a decent approximation of the block's PCA. - const int saxis0_r = delta_r, saxis0_g = delta_g, saxis0_b = delta_b; - - int low_dot0 = INT_MAX, high_dot0 = INT_MIN; - int low_dot1 = INT_MAX, high_dot1 = INT_MIN; - int low_dot2 = INT_MAX, high_dot2 = INT_MIN; - int low_dot3 = INT_MAX, high_dot3 = INT_MIN; - - //int low_c0, low_c1, low_c2, low_c3; - //int high_c0, high_c1, high_c2, high_c3; - - for (uint32_t i = 0; i < 16; i++) - { - const int dotx = pSrc_pixels[i].r * saxis0_r; - const int doty = pSrc_pixels[i].g * saxis0_g; - const int dotz = pSrc_pixels[i].b * saxis0_b; - - const int dot0 = ((dotz + dotx + doty) << 4) + i; - const int dot1 = ((dotz - dotx - doty) << 4) + i; - const int dot2 = ((dotz - dotx + doty) << 4) + i; - const int dot3 = ((dotz + dotx - doty) << 4) + i; - - if (dot0 < low_dot0) - { - low_dot0 = dot0; - //low_c0 = i; - } - if ((dot0 ^ 15) > high_dot0) - { - high_dot0 = dot0 ^ 15; - //high_c0 = i; - } - - if (dot1 < low_dot1) - { - low_dot1 = dot1; - //low_c1 = i; - } - if ((dot1 ^ 15) > high_dot1) - { - high_dot1 = dot1 ^ 15; - //high_c1 = i; - } - - if (dot2 < low_dot2) - { - low_dot2 = dot2; - //low_c2 = i; - } - if ((dot2 ^ 15) > high_dot2) - { - high_dot2 = dot2 ^ 15; - //high_c2 = i; - } - - if (dot3 < low_dot3) - { - low_dot3 = dot3; - //low_c3 = i; - } - if ((dot3 ^ 15) > high_dot3) - { - high_dot3 = dot3 ^ 15; - //high_c3 = i; - } - } - - low_c = low_dot0 & 15; - high_c = ~high_dot0 & 15; - uint32_t r = (high_dot0 & ~15) - (low_dot0 & ~15); - - uint32_t tr = (high_dot1 & ~15) - (low_dot1 & ~15); - if (tr > r) { - low_c = low_dot1 & 15; - high_c = ~high_dot1 & 15; - r = tr; - } - - tr = (high_dot2 & ~15) - (low_dot2 & ~15); - if (tr > r) { - low_c = low_dot2 & 15; - high_c = ~high_dot2 & 15; - r = tr; - } - - tr = (high_dot3 & ~15) - (low_dot3 & ~15); - if (tr > r) { - low_c = low_dot3 & 15; - high_c = ~high_dot3 & 15; - } - } - - lr = to_5(pSrc_pixels[low_c].r); - lg = to_6(pSrc_pixels[low_c].g); - lb = to_5(pSrc_pixels[low_c].b); - - hr = to_5(pSrc_pixels[high_c].r); - hg = to_6(pSrc_pixels[high_c].g); - hb = to_5(pSrc_pixels[high_c].b); - } - - bc1_find_sels_2(pSrc_pixels, lr, lg, lb, hr, hg, hb, sels); - } // if (use_sels) - - const uint32_t total_ls_passes = (flags & cEncodeBC1HigherQuality) ? 3 : (flags & cEncodeBC1HighQuality ? 2 : 1); - for (uint32_t ls_pass = 0; ls_pass < total_ls_passes; ls_pass++) - { - int prev_lr = lr, prev_lg = lg, prev_lb = lb, prev_hr = hr, prev_hg = hg, prev_hb = hb; - - // This is where the real magic happens. We have an array of candidate selectors, so let's use least squares to compute the optimal low/high endpoint colors. - vec3F xl, xh; - if (!compute_least_squares_endpoints_rgb(pSrc_pixels, sels, &xl, &xh)) - { - if (avg_r < 0) - { - int total_r = 0, total_g = 0, total_b = 0; - for (uint32_t i = 0; i < 16; i++) - { - total_r += pSrc_pixels[i].r; - total_g += pSrc_pixels[i].g; - total_b += pSrc_pixels[i].b; - } - - avg_r = (total_r + 8) >> 4; - avg_g = (total_g + 8) >> 4; - avg_b = (total_b + 8) >> 4; - } - - // All selectors equal - treat it as a solid block which should always be equal or better. - lr = g_bc1_match5_equals_1[avg_r].m_hi; - lg = g_bc1_match6_equals_1[avg_g].m_hi; - lb = g_bc1_match5_equals_1[avg_b].m_hi; - - hr = g_bc1_match5_equals_1[avg_r].m_lo; - hg = g_bc1_match6_equals_1[avg_g].m_lo; - hb = g_bc1_match5_equals_1[avg_b].m_lo; - - // In high/higher quality mode, let it try again in case the optimal tables have caused the sels to diverge. - } - else - { - lr = basisu::clamp((int)((xl.c[0]) * (31.0f / 255.0f) + .5f), 0, 31); - lg = basisu::clamp((int)((xl.c[1]) * (63.0f / 255.0f) + .5f), 0, 63); - lb = basisu::clamp((int)((xl.c[2]) * (31.0f / 255.0f) + .5f), 0, 31); - - hr = basisu::clamp((int)((xh.c[0]) * (31.0f / 255.0f) + .5f), 0, 31); - hg = basisu::clamp((int)((xh.c[1]) * (63.0f / 255.0f) + .5f), 0, 63); - hb = basisu::clamp((int)((xh.c[2]) * (31.0f / 255.0f) + .5f), 0, 31); - } - - if ((prev_lr == lr) && (prev_lg == lg) && (prev_lb == lb) && (prev_hr == hr) && (prev_hg == hg) && (prev_hb == hb)) - break; - - bc1_find_sels_2(pSrc_pixels, lr, lg, lb, hr, hg, hb, sels); - } - - uint32_t lc16 = dxt1_block::pack_unscaled_color(lr, lg, lb); - uint32_t hc16 = dxt1_block::pack_unscaled_color(hr, hg, hb); - - // Always forbid 3 color blocks - if (lc16 == hc16) - { - uint8_t mask = 0; - - // Make l > h - if (hc16 > 0) - hc16--; - else - { - // lc16 = hc16 = 0 - assert(lc16 == hc16 && hc16 == 0); - - hc16 = 0; - lc16 = 1; - mask = 0x55; // select hc16 - } - - assert(lc16 > hc16); - pDst_block->set_low_color(static_cast(lc16)); - pDst_block->set_high_color(static_cast(hc16)); - - pDst_block->m_selectors[0] = mask; - pDst_block->m_selectors[1] = mask; - pDst_block->m_selectors[2] = mask; - pDst_block->m_selectors[3] = mask; - } - else - { - uint8_t invert_mask = 0; - if (lc16 < hc16) - { - std::swap(lc16, hc16); - invert_mask = 0x55; - } - - assert(lc16 > hc16); - pDst_block->set_low_color((uint16_t)lc16); - pDst_block->set_high_color((uint16_t)hc16); - - uint32_t packed_sels = 0; - static const uint8_t s_sel_trans[4] = { 0, 2, 3, 1 }; - for (uint32_t i = 0; i < 16; i++) - packed_sels |= ((uint32_t)s_sel_trans[sels[i]] << (i * 2)); - - pDst_block->m_selectors[0] = (uint8_t)packed_sels ^ invert_mask; - pDst_block->m_selectors[1] = (uint8_t)(packed_sels >> 8) ^ invert_mask; - pDst_block->m_selectors[2] = (uint8_t)(packed_sels >> 16) ^ invert_mask; - pDst_block->m_selectors[3] = (uint8_t)(packed_sels >> 24) ^ invert_mask; - } - } - - // Scale the UASTC first subset endpoints and first plane's weight indices directly to BC1's - fastest. - void transcode_uastc_to_bc1_hint0(const unpacked_uastc_block& unpacked_src_blk, void* pDst) - { - const uint32_t mode = unpacked_src_blk.m_mode; - const astc_block_desc& astc_blk = unpacked_src_blk.m_astc; - - dxt1_block& b = *static_cast(pDst); - - const uint32_t endpoint_range = g_uastc_mode_endpoint_ranges[mode]; - - const uint32_t total_comps = g_uastc_mode_comps[mode]; - - if (total_comps == 2) - { - const uint32_t l = g_astc_unquant[endpoint_range][astc_blk.m_endpoints[0]].m_unquant; - const uint32_t h = g_astc_unquant[endpoint_range][astc_blk.m_endpoints[1]].m_unquant; - - b.set_low_color(dxt1_block::pack_color(color32(l, l, l, 255), true, 127)); - b.set_high_color(dxt1_block::pack_color(color32(h, h, h, 255), true, 127)); - } - else - { - b.set_low_color(dxt1_block::pack_color( - color32(g_astc_unquant[endpoint_range][astc_blk.m_endpoints[0]].m_unquant, - g_astc_unquant[endpoint_range][astc_blk.m_endpoints[2]].m_unquant, - g_astc_unquant[endpoint_range][astc_blk.m_endpoints[4]].m_unquant, - 255), true, 127) - ); - - b.set_high_color(dxt1_block::pack_color( - color32(g_astc_unquant[endpoint_range][astc_blk.m_endpoints[1]].m_unquant, - g_astc_unquant[endpoint_range][astc_blk.m_endpoints[3]].m_unquant, - g_astc_unquant[endpoint_range][astc_blk.m_endpoints[5]].m_unquant, - 255), true, 127) - ); - } - - if (b.get_low_color() == b.get_high_color()) - { - // Always forbid 3 color blocks - uint16_t lc16 = (uint16_t)b.get_low_color(); - uint16_t hc16 = (uint16_t)b.get_high_color(); - - uint8_t mask = 0; - - // Make l > h - if (hc16 > 0) - hc16--; - else - { - // lc16 = hc16 = 0 - assert(lc16 == hc16 && hc16 == 0); - - hc16 = 0; - lc16 = 1; - mask = 0x55; // select hc16 - } - - assert(lc16 > hc16); - b.set_low_color(static_cast(lc16)); - b.set_high_color(static_cast(hc16)); - - b.m_selectors[0] = mask; - b.m_selectors[1] = mask; - b.m_selectors[2] = mask; - b.m_selectors[3] = mask; - } - else - { - bool invert = false; - if (b.get_low_color() < b.get_high_color()) - { - std::swap(b.m_low_color[0], b.m_high_color[0]); - std::swap(b.m_low_color[1], b.m_high_color[1]); - invert = true; - } - - const uint8_t* pTran = s_uastc_to_bc1_weights[g_uastc_mode_weight_bits[mode]]; - - const uint32_t plane_shift = g_uastc_mode_planes[mode] - 1; - - uint32_t sels = 0; - for (int i = 15; i >= 0; --i) - { - uint32_t s = pTran[astc_blk.m_weights[i << plane_shift]]; - - if (invert) - s ^= 1; - - sels = (sels << 2) | s; - } - b.m_selectors[0] = sels & 0xFF; - b.m_selectors[1] = (sels >> 8) & 0xFF; - b.m_selectors[2] = (sels >> 16) & 0xFF; - b.m_selectors[3] = (sels >> 24) & 0xFF; - } - } - - // Scale the UASTC first plane's weight indices to BC1, use 1 or 2 least squares passes to compute endpoints - no PCA needed. - void transcode_uastc_to_bc1_hint1(const unpacked_uastc_block& unpacked_src_blk, const color32 block_pixels[4][4], void* pDst, bool high_quality) - { - const uint32_t mode = unpacked_src_blk.m_mode; - - const astc_block_desc& astc_blk = unpacked_src_blk.m_astc; - - dxt1_block& b = *static_cast(pDst); - - b.set_low_color(1); - b.set_high_color(0); - - const uint8_t* pTran = s_uastc_to_bc1_weights[g_uastc_mode_weight_bits[mode]]; - - const uint32_t plane_shift = g_uastc_mode_planes[mode] - 1; - - uint32_t sels = 0; - for (int i = 15; i >= 0; --i) - { - sels <<= 2; - sels |= pTran[astc_blk.m_weights[i << plane_shift]]; - } - - b.m_selectors[0] = sels & 0xFF; - b.m_selectors[1] = (sels >> 8) & 0xFF; - b.m_selectors[2] = (sels >> 16) & 0xFF; - b.m_selectors[3] = (sels >> 24) & 0xFF; - - encode_bc1(&b, (const uint8_t*)&block_pixels[0][0].c[0], (high_quality ? cEncodeBC1HighQuality : 0) | cEncodeBC1UseSelectors); - } - - bool transcode_uastc_to_bc1(const uastc_block& src_blk, void* pDst, bool high_quality) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - const uint32_t mode = unpacked_src_blk.m_mode; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - encode_bc1_solid_block(pDst, unpacked_src_blk.m_solid_color.r, unpacked_src_blk.m_solid_color.g, unpacked_src_blk.m_solid_color.b); - return true; - } - - if ((!high_quality) && (unpacked_src_blk.m_bc1_hint0)) - transcode_uastc_to_bc1_hint0(unpacked_src_blk, pDst); - else - { - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - if (unpacked_src_blk.m_bc1_hint1) - transcode_uastc_to_bc1_hint1(unpacked_src_blk, block_pixels, pDst, high_quality); - else - encode_bc1(pDst, &block_pixels[0][0].r, high_quality ? cEncodeBC1HighQuality : 0); - } - - return true; - } - - static void write_bc4_solid_block(uint8_t* pDst, uint32_t a) - { - pDst[0] = (uint8_t)a; - pDst[1] = (uint8_t)a; - memset(pDst + 2, 0, 6); - } - - bool transcode_uastc_to_bc3(const uastc_block& src_blk, void* pDst, bool high_quality) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - const uint32_t mode = unpacked_src_blk.m_mode; - - void* pBC4_block = pDst; - dxt1_block* pBC1_block = &static_cast(pDst)[1]; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - write_bc4_solid_block(static_cast(pBC4_block), unpacked_src_blk.m_solid_color.a); - encode_bc1_solid_block(pBC1_block, unpacked_src_blk.m_solid_color.r, unpacked_src_blk.m_solid_color.g, unpacked_src_blk.m_solid_color.b); - return true; - } - - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - basist::encode_bc4(pBC4_block, &block_pixels[0][0].a, sizeof(color32)); - - if ((!high_quality) && (unpacked_src_blk.m_bc1_hint0)) - transcode_uastc_to_bc1_hint0(unpacked_src_blk, pBC1_block); - else - { - if (unpacked_src_blk.m_bc1_hint1) - transcode_uastc_to_bc1_hint1(unpacked_src_blk, block_pixels, pBC1_block, high_quality); - else - encode_bc1(pBC1_block, &block_pixels[0][0].r, high_quality ? cEncodeBC1HighQuality : 0); - } - - return true; - } - - bool transcode_uastc_to_bc4(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0) - { - BASISU_NOTE_UNUSED(high_quality); - - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - const uint32_t mode = unpacked_src_blk.m_mode; - - void* pBC4_block = pDst; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - write_bc4_solid_block(static_cast(pBC4_block), unpacked_src_blk.m_solid_color.c[chan0]); - return true; - } - - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - basist::encode_bc4(pBC4_block, &block_pixels[0][0].c[chan0], sizeof(color32)); - - return true; - } - - bool transcode_uastc_to_bc5(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0, uint32_t chan1) - { - BASISU_NOTE_UNUSED(high_quality); - - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - const uint32_t mode = unpacked_src_blk.m_mode; - - void* pBC4_block0 = pDst; - void* pBC4_block1 = (uint8_t*)pDst + 8; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - write_bc4_solid_block(static_cast(pBC4_block0), unpacked_src_blk.m_solid_color.c[chan0]); - write_bc4_solid_block(static_cast(pBC4_block1), unpacked_src_blk.m_solid_color.c[chan1]); - return true; - } - - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - basist::encode_bc4(pBC4_block0, &block_pixels[0][0].c[chan0], sizeof(color32)); - basist::encode_bc4(pBC4_block1, &block_pixels[0][0].c[chan1], sizeof(color32)); - - return true; - } - - static const uint8_t s_etc2_eac_bit_ofs[16] = { 45, 33, 21, 9, 42, 30, 18, 6, 39, 27, 15, 3, 36, 24, 12, 0 }; - - static void pack_eac_solid_block(eac_block& blk, uint32_t a) - { - blk.m_base = static_cast(a); - blk.m_table = 13; - blk.m_multiplier = 0; - - memcpy(blk.m_selectors, g_etc2_eac_a8_sel4, sizeof(g_etc2_eac_a8_sel4)); - - return; - } - - // Only checks 4 tables. - static void pack_eac(eac_block& blk, const uint8_t* pPixels, uint32_t stride) - { - uint32_t min_alpha = 255, max_alpha = 0; - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t a = pPixels[i * stride]; - if (a < min_alpha) min_alpha = a; - if (a > max_alpha) max_alpha = a; - } - - if (min_alpha == max_alpha) - { - pack_eac_solid_block(blk, min_alpha); - return; - } - - const uint32_t alpha_range = max_alpha - min_alpha; - - const uint32_t SINGLE_TABLE_THRESH = 5; - if (alpha_range <= SINGLE_TABLE_THRESH) - { - // If alpha_range <= 5 table 13 is lossless - int base = clamp255((int)max_alpha - 2); - - blk.m_base = base; - blk.m_multiplier = 1; - blk.m_table = 13; - - base -= 3; - - uint64_t packed_sels = 0; - for (uint32_t i = 0; i < 16; i++) - { - const int a = pPixels[i * stride]; - - static const uint8_t s_sels[6] = { 2, 1, 0, 4, 5, 6 }; - - int sel = a - base; - assert(sel >= 0 && sel <= 5); - - packed_sels |= (static_cast(s_sels[sel]) << s_etc2_eac_bit_ofs[i]); - } - - blk.set_selector_bits(packed_sels); - - return; - } - - const uint32_t T0 = 2, T1 = 8, T2 = 11, T3 = 13; - static const uint8_t s_tables[4] = { T0, T1, T2, T3 }; - - int base[4], mul[4]; - uint32_t mul_or = 0; - for (uint32_t i = 0; i < 4; i++) - { - const uint32_t table = s_tables[i]; - - const float range = (float)(g_eac_modifier_table[table][ETC2_EAC_MAX_VALUE_SELECTOR] - g_eac_modifier_table[table][ETC2_EAC_MIN_VALUE_SELECTOR]); - - base[i] = clamp255((int)roundf(basisu::lerp((float)min_alpha, (float)max_alpha, (float)(0 - g_eac_modifier_table[table][ETC2_EAC_MIN_VALUE_SELECTOR]) / range))); - mul[i] = clampi((int)roundf(alpha_range / range), 1, 15); - mul_or |= mul[i]; - } - - uint32_t total_err[4] = { 0, 0, 0, 0 }; - uint8_t sels[4][16]; - - for (uint32_t i = 0; i < 16; i++) - { - const int a = pPixels[i * stride]; - - uint32_t l0 = UINT32_MAX, l1 = UINT32_MAX, l2 = UINT32_MAX, l3 = UINT32_MAX; - - if ((a < 7) || (a > (255 - 7))) - { - for (uint32_t s = 0; s < 8; s++) - { - const int v0 = clamp255(mul[0] * g_eac_modifier_table[T0][s] + base[0]); - const int v1 = clamp255(mul[1] * g_eac_modifier_table[T1][s] + base[1]); - const int v2 = clamp255(mul[2] * g_eac_modifier_table[T2][s] + base[2]); - const int v3 = clamp255(mul[3] * g_eac_modifier_table[T3][s] + base[3]); - - l0 = basisu::minimum(l0, (basisu::iabs(v0 - a) << 3) | s); - l1 = basisu::minimum(l1, (basisu::iabs(v1 - a) << 3) | s); - l2 = basisu::minimum(l2, (basisu::iabs(v2 - a) << 3) | s); - l3 = basisu::minimum(l3, (basisu::iabs(v3 - a) << 3) | s); - } - } - else if (mul_or == 1) - { - const int a0 = base[0] - a, a1 = base[1] - a, a2 = base[2] - a, a3 = base[3] - a; - - for (uint32_t s = 0; s < 8; s++) - { - const int v0 = g_eac_modifier_table[T0][s] + a0; - const int v1 = g_eac_modifier_table[T1][s] + a1; - const int v2 = g_eac_modifier_table[T2][s] + a2; - const int v3 = g_eac_modifier_table[T3][s] + a3; - - l0 = basisu::minimum(l0, (basisu::iabs(v0) << 3) | s); - l1 = basisu::minimum(l1, (basisu::iabs(v1) << 3) | s); - l2 = basisu::minimum(l2, (basisu::iabs(v2) << 3) | s); - l3 = basisu::minimum(l3, (basisu::iabs(v3) << 3) | s); - } - } - else - { - const int a0 = base[0] - a, a1 = base[1] - a, a2 = base[2] - a, a3 = base[3] - a; - - for (uint32_t s = 0; s < 8; s++) - { - const int v0 = mul[0] * g_eac_modifier_table[T0][s] + a0; - const int v1 = mul[1] * g_eac_modifier_table[T1][s] + a1; - const int v2 = mul[2] * g_eac_modifier_table[T2][s] + a2; - const int v3 = mul[3] * g_eac_modifier_table[T3][s] + a3; - - l0 = basisu::minimum(l0, (basisu::iabs(v0) << 3) | s); - l1 = basisu::minimum(l1, (basisu::iabs(v1) << 3) | s); - l2 = basisu::minimum(l2, (basisu::iabs(v2) << 3) | s); - l3 = basisu::minimum(l3, (basisu::iabs(v3) << 3) | s); - } - } - - sels[0][i] = l0 & 7; - sels[1][i] = l1 & 7; - sels[2][i] = l2 & 7; - sels[3][i] = l3 & 7; - - total_err[0] += basisu::square(l0 >> 3); - total_err[1] += basisu::square(l1 >> 3); - total_err[2] += basisu::square(l2 >> 3); - total_err[3] += basisu::square(l3 >> 3); - } - - uint32_t min_err = total_err[0], min_index = 0; - for (uint32_t i = 1; i < 4; i++) - { - if (total_err[i] < min_err) - { - min_err = total_err[i]; - min_index = i; - } - } - - blk.m_base = base[min_index]; - blk.m_multiplier = mul[min_index]; - blk.m_table = s_tables[min_index]; - - uint64_t packed_sels = 0; - const uint8_t* pSels = &sels[min_index][0]; - for (uint32_t i = 0; i < 16; i++) - packed_sels |= (static_cast(pSels[i]) << s_etc2_eac_bit_ofs[i]); - - blk.set_selector_bits(packed_sels); - } - - // Checks all 16 tables. Around ~2 dB better vs. pack_eac(), ~1.2 dB less than near-optimal. - static void pack_eac_high_quality(eac_block& blk, const uint8_t* pPixels, uint32_t stride) - { - uint32_t min_alpha = 255, max_alpha = 0; - for (uint32_t i = 0; i < 16; i++) - { - const uint32_t a = pPixels[i * stride]; - if (a < min_alpha) min_alpha = a; - if (a > max_alpha) max_alpha = a; - } - - if (min_alpha == max_alpha) - { - pack_eac_solid_block(blk, min_alpha); - return; - } - - const uint32_t alpha_range = max_alpha - min_alpha; - - const uint32_t SINGLE_TABLE_THRESH = 5; - if (alpha_range <= SINGLE_TABLE_THRESH) - { - // If alpha_range <= 5 table 13 is lossless - int base = clamp255((int)max_alpha - 2); - - blk.m_base = base; - blk.m_multiplier = 1; - blk.m_table = 13; - - base -= 3; - - uint64_t packed_sels = 0; - for (uint32_t i = 0; i < 16; i++) - { - const int a = pPixels[i * stride]; - - static const uint8_t s_sels[6] = { 2, 1, 0, 4, 5, 6 }; - - int sel = a - base; - assert(sel >= 0 && sel <= 5); - - packed_sels |= (static_cast(s_sels[sel]) << s_etc2_eac_bit_ofs[i]); - } - - blk.set_selector_bits(packed_sels); - - return; - } - - int base[16], mul[16]; - for (uint32_t table = 0; table < 16; table++) - { - const float range = (float)(g_eac_modifier_table[table][ETC2_EAC_MAX_VALUE_SELECTOR] - g_eac_modifier_table[table][ETC2_EAC_MIN_VALUE_SELECTOR]); - - base[table] = clamp255((int)roundf(basisu::lerp((float)min_alpha, (float)max_alpha, (float)(0 - g_eac_modifier_table[table][ETC2_EAC_MIN_VALUE_SELECTOR]) / range))); - mul[table] = clampi((int)roundf(alpha_range / range), 1, 15); - } - - uint32_t total_err[16]; - memset(total_err, 0, sizeof(total_err)); - - uint8_t sels[16][16]; - - for (uint32_t table = 0; table < 16; table++) - { - const int8_t* pTable = &g_eac_modifier_table[table][0]; - const int m = mul[table], b = base[table]; - - uint32_t prev_l = 0, prev_a = UINT32_MAX; - - for (uint32_t i = 0; i < 16; i++) - { - const int a = pPixels[i * stride]; - - if ((uint32_t)a == prev_a) - { - sels[table][i] = prev_l & 7; - total_err[table] += basisu::square(prev_l >> 3); - } - else - { - uint32_t l = basisu::iabs(clamp255(m * pTable[0] + b) - a) << 3; - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[1] + b) - a) << 3) | 1); - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[2] + b) - a) << 3) | 2); - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[3] + b) - a) << 3) | 3); - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[4] + b) - a) << 3) | 4); - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[5] + b) - a) << 3) | 5); - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[6] + b) - a) << 3) | 6); - l = basisu::minimum(l, (basisu::iabs(clamp255(m * pTable[7] + b) - a) << 3) | 7); - - sels[table][i] = l & 7; - total_err[table] += basisu::square(l >> 3); - - prev_l = l; - prev_a = a; - } - } - } - - uint32_t min_err = total_err[0], min_index = 0; - for (uint32_t i = 1; i < 16; i++) - { - if (total_err[i] < min_err) - { - min_err = total_err[i]; - min_index = i; - } - } - - blk.m_base = base[min_index]; - blk.m_multiplier = mul[min_index]; - blk.m_table = min_index; - - uint64_t packed_sels = 0; - const uint8_t* pSels = &sels[min_index][0]; - for (uint32_t i = 0; i < 16; i++) - packed_sels |= (static_cast(pSels[i]) << s_etc2_eac_bit_ofs[i]); - - blk.set_selector_bits(packed_sels); - } - - bool transcode_uastc_to_etc2_eac_r11(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - const uint32_t mode = unpacked_src_blk.m_mode; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - pack_eac_solid_block(*static_cast(pDst), unpacked_src_blk.m_solid_color.c[chan0]); - return true; - } - - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - if (chan0 == 3) - transcode_uastc_to_etc2_eac_a8(unpacked_src_blk, block_pixels, pDst); - else - (high_quality ? pack_eac_high_quality : pack_eac)(*static_cast(pDst), &block_pixels[0][0].c[chan0], sizeof(color32)); - - return true; - } - - bool transcode_uastc_to_etc2_eac_rg11(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0, uint32_t chan1) - { - unpacked_uastc_block unpacked_src_blk; - if (!unpack_uastc(src_blk, unpacked_src_blk, false)) - return false; - - const uint32_t mode = unpacked_src_blk.m_mode; - - if (mode == UASTC_MODE_INDEX_SOLID_COLOR) - { - pack_eac_solid_block(static_cast(pDst)[0], unpacked_src_blk.m_solid_color.c[chan0]); - pack_eac_solid_block(static_cast(pDst)[1], unpacked_src_blk.m_solid_color.c[chan1]); - return true; - } - - color32 block_pixels[4][4]; - const bool unpack_srgb = false; - if (!unpack_uastc(unpacked_src_blk, &block_pixels[0][0], unpack_srgb)) - return false; - - if (chan0 == 3) - transcode_uastc_to_etc2_eac_a8(unpacked_src_blk, block_pixels, &static_cast(pDst)[0]); - else - (high_quality ? pack_eac_high_quality : pack_eac)(static_cast(pDst)[0], &block_pixels[0][0].c[chan0], sizeof(color32)); - - if (chan1 == 3) - transcode_uastc_to_etc2_eac_a8(unpacked_src_blk, block_pixels, &static_cast(pDst)[1]); - else - (high_quality ? pack_eac_high_quality : pack_eac)(static_cast(pDst)[1], &block_pixels[0][0].c[chan1], sizeof(color32)); - return true; - } - - // PVRTC1 - static void fixup_pvrtc1_4_modulation_rgb( - const uastc_block* pSrc_blocks, - const uint32_t* pPVRTC_endpoints, - void* pDst_blocks, - uint32_t num_blocks_x, uint32_t num_blocks_y, bool from_alpha) - { - const uint32_t x_mask = num_blocks_x - 1; - const uint32_t y_mask = num_blocks_y - 1; - const uint32_t x_bits = basisu::total_bits(x_mask); - const uint32_t y_bits = basisu::total_bits(y_mask); - const uint32_t min_bits = basisu::minimum(x_bits, y_bits); - //const uint32_t max_bits = basisu::maximum(x_bits, y_bits); - const uint32_t swizzle_mask = (1 << (min_bits * 2)) - 1; - - uint32_t block_index = 0; - - // really 3x3 - int e0[4][4], e1[4][4]; - - for (int y = 0; y < static_cast(num_blocks_y); y++) - { - const uint32_t* pE_rows[3]; - - for (int ey = 0; ey < 3; ey++) - { - int by = y + ey - 1; - - const uint32_t* pE = &pPVRTC_endpoints[(by & y_mask) * num_blocks_x]; - - pE_rows[ey] = pE; - - for (int ex = 0; ex < 3; ex++) - { - int bx = 0 + ex - 1; - - const uint32_t e = pE[bx & x_mask]; - - e0[ex][ey] = (get_opaque_endpoint_l0(e) * 255) / 31; - e1[ex][ey] = (get_opaque_endpoint_l1(e) * 255) / 31; - } - } - - const uint32_t y_swizzle = (g_pvrtc_swizzle_table[y >> 8] << 16) | g_pvrtc_swizzle_table[y & 0xFF]; - - for (int x = 0; x < static_cast(num_blocks_x); x++, block_index++) - { - const uastc_block& src_block = pSrc_blocks[block_index]; - - color32 block_pixels[4][4]; - unpack_uastc(src_block, &block_pixels[0][0], false); - if (from_alpha) - { - // Just set RGB to alpha to avoid adding complexity below. - for (uint32_t i = 0; i < 16; i++) - { - const uint8_t a = ((color32*)block_pixels)[i].a; - ((color32*)block_pixels)[i].set(a, a, a, 255); - } - } - - const uint32_t x_swizzle = (g_pvrtc_swizzle_table[x >> 8] << 17) | (g_pvrtc_swizzle_table[x & 0xFF] << 1); - - uint32_t swizzled = x_swizzle | y_swizzle; - if (num_blocks_x != num_blocks_y) - { - swizzled &= swizzle_mask; - - if (num_blocks_x > num_blocks_y) - swizzled |= ((x >> min_bits) << (min_bits * 2)); - else - swizzled |= ((y >> min_bits) << (min_bits * 2)); - } - - pvrtc4_block* pDst_block = static_cast(pDst_blocks) + swizzled; - pDst_block->m_endpoints = pPVRTC_endpoints[block_index]; - - { - const uint32_t ex = 2; - int bx = x + ex - 1; - bx &= x_mask; - -#define DO_ROW(ey) \ - { \ - const uint32_t e = pE_rows[ey][bx]; \ - e0[ex][ey] = (get_opaque_endpoint_l0(e) * 255) / 31; \ - e1[ex][ey] = (get_opaque_endpoint_l1(e) * 255) / 31; \ - } - - DO_ROW(0); - DO_ROW(1); - DO_ROW(2); -#undef DO_ROW - } - - uint32_t mod = 0; - -#define DO_PIX(lx, ly, w0, w1, w2, w3) \ - { \ - int ca_l = a0 * w0 + a1 * w1 + a2 * w2 + a3 * w3; \ - int cb_l = b0 * w0 + b1 * w1 + b2 * w2 + b3 * w3; \ - int cl = (block_pixels[ly][lx].r + block_pixels[ly][lx].g + block_pixels[ly][lx].b) * 16; \ - int dl = cb_l - ca_l; \ - int vl = cl - ca_l; \ - int p = vl * 16; \ - if (ca_l > cb_l) { p = -p; dl = -dl; } \ - uint32_t m = 0; \ - if (p > 3 * dl) m = (uint32_t)(1 << ((ly) * 8 + (lx) * 2)); \ - if (p > 8 * dl) m = (uint32_t)(2 << ((ly) * 8 + (lx) * 2)); \ - if (p > 13 * dl) m = (uint32_t)(3 << ((ly) * 8 + (lx) * 2)); \ - mod |= m; \ - } - - { - const uint32_t ex = 0, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 0, 4, 4, 4, 4); - DO_PIX(1, 0, 2, 6, 2, 6); - DO_PIX(0, 1, 2, 2, 6, 6); - DO_PIX(1, 1, 1, 3, 3, 9); - } - - { - const uint32_t ex = 1, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 0, 8, 0, 8, 0); - DO_PIX(3, 0, 6, 2, 6, 2); - DO_PIX(2, 1, 4, 0, 12, 0); - DO_PIX(3, 1, 3, 1, 9, 3); - } - - { - const uint32_t ex = 0, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 2, 8, 8, 0, 0); - DO_PIX(1, 2, 4, 12, 0, 0); - DO_PIX(0, 3, 6, 6, 2, 2); - DO_PIX(1, 3, 3, 9, 1, 3); - } - - { - const uint32_t ex = 1, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 2, 16, 0, 0, 0); - DO_PIX(3, 2, 12, 4, 0, 0); - DO_PIX(2, 3, 12, 0, 4, 0); - DO_PIX(3, 3, 9, 3, 3, 1); - } -#undef DO_PIX - - pDst_block->m_modulation = mod; - - e0[0][0] = e0[1][0]; e0[1][0] = e0[2][0]; - e0[0][1] = e0[1][1]; e0[1][1] = e0[2][1]; - e0[0][2] = e0[1][2]; e0[1][2] = e0[2][2]; - - e1[0][0] = e1[1][0]; e1[1][0] = e1[2][0]; - e1[0][1] = e1[1][1]; e1[1][1] = e1[2][1]; - e1[0][2] = e1[1][2]; e1[1][2] = e1[2][2]; - - } // x - } // y - } - - static void fixup_pvrtc1_4_modulation_rgba( - const uastc_block* pSrc_blocks, - const uint32_t* pPVRTC_endpoints, - void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y) - { - const uint32_t x_mask = num_blocks_x - 1; - const uint32_t y_mask = num_blocks_y - 1; - const uint32_t x_bits = basisu::total_bits(x_mask); - const uint32_t y_bits = basisu::total_bits(y_mask); - const uint32_t min_bits = basisu::minimum(x_bits, y_bits); - //const uint32_t max_bits = basisu::maximum(x_bits, y_bits); - const uint32_t swizzle_mask = (1 << (min_bits * 2)) - 1; - - uint32_t block_index = 0; - - // really 3x3 - int e0[4][4], e1[4][4]; - - for (int y = 0; y < static_cast(num_blocks_y); y++) - { - const uint32_t* pE_rows[3]; - - for (int ey = 0; ey < 3; ey++) - { - int by = y + ey - 1; - - const uint32_t* pE = &pPVRTC_endpoints[(by & y_mask) * num_blocks_x]; - - pE_rows[ey] = pE; - - for (int ex = 0; ex < 3; ex++) - { - int bx = 0 + ex - 1; - - const uint32_t e = pE[bx & x_mask]; - - e0[ex][ey] = get_endpoint_l8(e, 0); - e1[ex][ey] = get_endpoint_l8(e, 1); - } - } - - const uint32_t y_swizzle = (g_pvrtc_swizzle_table[y >> 8] << 16) | g_pvrtc_swizzle_table[y & 0xFF]; - - for (int x = 0; x < static_cast(num_blocks_x); x++, block_index++) - { - const uastc_block& src_block = pSrc_blocks[block_index]; - - color32 block_pixels[4][4]; - unpack_uastc(src_block, &block_pixels[0][0], false); - - const uint32_t x_swizzle = (g_pvrtc_swizzle_table[x >> 8] << 17) | (g_pvrtc_swizzle_table[x & 0xFF] << 1); - - uint32_t swizzled = x_swizzle | y_swizzle; - if (num_blocks_x != num_blocks_y) - { - swizzled &= swizzle_mask; - - if (num_blocks_x > num_blocks_y) - swizzled |= ((x >> min_bits) << (min_bits * 2)); - else - swizzled |= ((y >> min_bits) << (min_bits * 2)); - } - - pvrtc4_block* pDst_block = static_cast(pDst_blocks) + swizzled; - pDst_block->m_endpoints = pPVRTC_endpoints[block_index]; - - { - const uint32_t ex = 2; - int bx = x + ex - 1; - bx &= x_mask; - -#define DO_ROW(ey) \ - { \ - const uint32_t e = pE_rows[ey][bx]; \ - e0[ex][ey] = get_endpoint_l8(e, 0); \ - e1[ex][ey] = get_endpoint_l8(e, 1); \ - } - - DO_ROW(0); - DO_ROW(1); - DO_ROW(2); -#undef DO_ROW - } - - uint32_t mod = 0; - -#define DO_PIX(lx, ly, w0, w1, w2, w3) \ - { \ - int ca_l = a0 * w0 + a1 * w1 + a2 * w2 + a3 * w3; \ - int cb_l = b0 * w0 + b1 * w1 + b2 * w2 + b3 * w3; \ - int cl = 16 * (block_pixels[ly][lx].r + block_pixels[ly][lx].g + block_pixels[ly][lx].b + block_pixels[ly][lx].a); \ - int dl = cb_l - ca_l; \ - int vl = cl - ca_l; \ - int p = vl * 16; \ - if (ca_l > cb_l) { p = -p; dl = -dl; } \ - uint32_t m = 0; \ - if (p > 3 * dl) m = (uint32_t)(1 << ((ly) * 8 + (lx) * 2)); \ - if (p > 8 * dl) m = (uint32_t)(2 << ((ly) * 8 + (lx) * 2)); \ - if (p > 13 * dl) m = (uint32_t)(3 << ((ly) * 8 + (lx) * 2)); \ - mod |= m; \ - } - - { - const uint32_t ex = 0, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 0, 4, 4, 4, 4); - DO_PIX(1, 0, 2, 6, 2, 6); - DO_PIX(0, 1, 2, 2, 6, 6); - DO_PIX(1, 1, 1, 3, 3, 9); - } - - { - const uint32_t ex = 1, ey = 0; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 0, 8, 0, 8, 0); - DO_PIX(3, 0, 6, 2, 6, 2); - DO_PIX(2, 1, 4, 0, 12, 0); - DO_PIX(3, 1, 3, 1, 9, 3); - } - - { - const uint32_t ex = 0, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(0, 2, 8, 8, 0, 0); - DO_PIX(1, 2, 4, 12, 0, 0); - DO_PIX(0, 3, 6, 6, 2, 2); - DO_PIX(1, 3, 3, 9, 1, 3); - } - - { - const uint32_t ex = 1, ey = 1; - const int a0 = e0[ex][ey], a1 = e0[ex + 1][ey], a2 = e0[ex][ey + 1], a3 = e0[ex + 1][ey + 1]; - const int b0 = e1[ex][ey], b1 = e1[ex + 1][ey], b2 = e1[ex][ey + 1], b3 = e1[ex + 1][ey + 1]; - DO_PIX(2, 2, 16, 0, 0, 0); - DO_PIX(3, 2, 12, 4, 0, 0); - DO_PIX(2, 3, 12, 0, 4, 0); - DO_PIX(3, 3, 9, 3, 3, 1); - } -#undef DO_PIX - - pDst_block->m_modulation = mod; - - e0[0][0] = e0[1][0]; e0[1][0] = e0[2][0]; - e0[0][1] = e0[1][1]; e0[1][1] = e0[2][1]; - e0[0][2] = e0[1][2]; e0[1][2] = e0[2][2]; - - e1[0][0] = e1[1][0]; e1[1][0] = e1[2][0]; - e1[0][1] = e1[1][1]; e1[1][1] = e1[2][1]; - e1[0][2] = e1[1][2]; e1[1][2] = e1[2][2]; - - } // x - } // y - } - - bool transcode_uastc_to_pvrtc1_4_rgb(const uastc_block* pSrc_blocks, void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, bool high_quality, bool from_alpha) - { - BASISU_NOTE_UNUSED(high_quality); - - if ((!num_blocks_x) || (!num_blocks_y)) - return false; - - const uint32_t width = num_blocks_x * 4; - const uint32_t height = num_blocks_y * 4; - if (!basisu::is_pow2(width) || !basisu::is_pow2(height)) - return false; - - basisu::vector temp_endpoints(num_blocks_x * num_blocks_y); - - for (uint32_t y = 0; y < num_blocks_y; y++) - { - for (uint32_t x = 0; x < num_blocks_x; x++) - { - color32 block_pixels[16]; - if (!unpack_uastc(pSrc_blocks[x + y * num_blocks_x], block_pixels, false)) - return false; - - // Get block's RGB bounding box - color32 low_color(255, 255, 255, 255), high_color(0, 0, 0, 0); - - if (from_alpha) - { - uint32_t low_a = 255, high_a = 0; - for (uint32_t i = 0; i < 16; i++) - { - low_a = basisu::minimum(low_a, block_pixels[i].a); - high_a = basisu::maximum(high_a, block_pixels[i].a); - } - low_color.set(low_a, low_a, low_a, 255); - high_color.set(high_a, high_a, high_a, 255); - } - else - { - for (uint32_t i = 0; i < 16; i++) - { - low_color = color32::comp_min(low_color, block_pixels[i]); - high_color = color32::comp_max(high_color, block_pixels[i]); - } - } - - // Set PVRTC1 endpoints to floor/ceil of bounding box's coordinates. - pvrtc4_block temp; - temp.set_opaque_endpoint_floor(0, low_color); - temp.set_opaque_endpoint_ceil(1, high_color); - - temp_endpoints[x + y * num_blocks_x] = temp.m_endpoints; - } - } - - fixup_pvrtc1_4_modulation_rgb(pSrc_blocks, &temp_endpoints[0], pDst_blocks, num_blocks_x, num_blocks_y, from_alpha); - - return true; - } - - bool transcode_uastc_to_pvrtc1_4_rgba(const uastc_block* pSrc_blocks, void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, bool high_quality) - { - BASISU_NOTE_UNUSED(high_quality); - - if ((!num_blocks_x) || (!num_blocks_y)) - return false; - - const uint32_t width = num_blocks_x * 4; - const uint32_t height = num_blocks_y * 4; - if (!basisu::is_pow2(width) || !basisu::is_pow2(height)) - return false; - - basisu::vector temp_endpoints(num_blocks_x * num_blocks_y); - - for (uint32_t y = 0; y < num_blocks_y; y++) - { - for (uint32_t x = 0; x < num_blocks_x; x++) - { - color32 block_pixels[16]; - if (!unpack_uastc(pSrc_blocks[x + y * num_blocks_x], block_pixels, false)) - return false; - - // Get block's RGBA bounding box - color32 low_color(255, 255, 255, 255), high_color(0, 0, 0, 0); - - for (uint32_t i = 0; i < 16; i++) - { - low_color = color32::comp_min(low_color, block_pixels[i]); - high_color = color32::comp_max(high_color, block_pixels[i]); - } - - // Set PVRTC1 endpoints to floor/ceil of bounding box's coordinates. - pvrtc4_block temp; - temp.set_endpoint_floor(0, low_color); - temp.set_endpoint_ceil(1, high_color); - - temp_endpoints[x + y * num_blocks_x] = temp.m_endpoints; - } - } - - fixup_pvrtc1_4_modulation_rgba(pSrc_blocks, &temp_endpoints[0], pDst_blocks, num_blocks_x, num_blocks_y); - - return true; - } - - void uastc_init() - { - for (uint32_t range = 0; range < BC7ENC_TOTAL_ASTC_RANGES; range++) - { - if (!astc_is_valid_endpoint_range(range)) - continue; - - const uint32_t levels = astc_get_levels(range); - - uint32_t vals[256]; - for (uint32_t i = 0; i < levels; i++) - vals[i] = (unquant_astc_endpoint_val(i, range) << 8) | i; - - std::sort(vals, vals + levels); - - for (uint32_t i = 0; i < levels; i++) - { - const uint32_t order = vals[i] & 0xFF; - const uint32_t unq = vals[i] >> 8; - - g_astc_unquant[range][order].m_unquant = (uint8_t)unq; - g_astc_unquant[range][order].m_index = (uint8_t)i; - - } // i - } - - // TODO: Precompute? - // BC7 777.1 - for (int c = 0; c < 256; c++) - { - for (uint32_t lp = 0; lp < 2; lp++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - - for (uint32_t l = 0; l < 128; l++) - { - const uint32_t low = (l << 1) | lp; - - for (uint32_t h = 0; h < 128; h++) - { - const uint32_t high = (h << 1) | lp; - - const int k = (low * (64 - g_bc7_weights4[BC7ENC_MODE_6_OPTIMAL_INDEX]) + high * g_bc7_weights4[BC7ENC_MODE_6_OPTIMAL_INDEX] + 32) >> 6; - - const int err = (k - c) * (k - c); - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_bc7_mode_6_optimal_endpoints[c][lp] = best; - } // lp - - } // c - - // BC7 777 - for (int c = 0; c < 256; c++) - { - endpoint_err best; - best.m_error = (uint16_t)UINT16_MAX; - - for (uint32_t l = 0; l < 128; l++) - { - const uint32_t low = (l << 1) | (l >> 6); - - for (uint32_t h = 0; h < 128; h++) - { - const uint32_t high = (h << 1) | (h >> 6); - - const int k = (low * (64 - g_bc7_weights2[BC7ENC_MODE_5_OPTIMAL_INDEX]) + high * g_bc7_weights2[BC7ENC_MODE_5_OPTIMAL_INDEX] + 32) >> 6; - - const int err = (k - c) * (k - c); - if (err < best.m_error) - { - best.m_error = (uint16_t)err; - best.m_lo = (uint8_t)l; - best.m_hi = (uint8_t)h; - } - } // h - } // l - - g_bc7_mode_5_optimal_endpoints[c] = best; - - } // c - } - -#endif // #if BASISD_SUPPORT_UASTC - -// ------------------------------------------------------------------------------------------------------ -// KTX2 -// ------------------------------------------------------------------------------------------------------ - -#if BASISD_SUPPORT_KTX2 - const uint8_t g_ktx2_file_identifier[12] = { 0xAB, 0x4B, 0x54, 0x58, 0x20, 0x32, 0x30, 0xBB, 0x0D, 0x0A, 0x1A, 0x0A }; - - ktx2_transcoder::ktx2_transcoder() : - m_etc1s_transcoder() - { - clear(); - } - - void ktx2_transcoder::clear() - { - m_pData = nullptr; - m_data_size = 0; - - memset(&m_header, 0, sizeof(m_header)); - m_levels.clear(); - m_dfd.clear(); - m_key_values.clear(); - memset(&m_etc1s_header, 0, sizeof(m_etc1s_header)); - m_etc1s_image_descs.clear(); - - m_format = basist::basis_tex_format::cETC1S; - - m_dfd_color_model = 0; - m_dfd_color_prims = KTX2_DF_PRIMARIES_UNSPECIFIED; - m_dfd_transfer_func = 0; - m_dfd_flags = 0; - m_dfd_samples = 0; - m_dfd_chan0 = KTX2_DF_CHANNEL_UASTC_RGB; - m_dfd_chan1 = KTX2_DF_CHANNEL_UASTC_RGB; - - m_etc1s_transcoder.clear(); - - m_def_transcoder_state.clear(); - - m_has_alpha = false; - m_is_video = false; - } - - bool ktx2_transcoder::init(const void* pData, uint32_t data_size) - { - clear(); - - if (!pData) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: pData is nullptr\n"); - assert(0); - return false; - } - - if (data_size <= sizeof(ktx2_header)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: File is impossibly too small to be a valid KTX2 file\n"); - return false; - } - - if (memcmp(pData, g_ktx2_file_identifier, sizeof(g_ktx2_file_identifier)) != 0) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: KTX2 file identifier is not present\n"); - return false; - } - - m_pData = static_cast(pData); - m_data_size = data_size; - - memcpy(&m_header, pData, sizeof(m_header)); - - // We only support UASTC and ETC1S - if (m_header.m_vk_format != KTX2_VK_FORMAT_UNDEFINED) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: KTX2 file must be in ETC1S or UASTC format\n"); - return false; - } - - // 3.3: "When format is VK_FORMAT_UNDEFINED, typeSize must equal 1." - if (m_header.m_type_size != 1) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid type_size\n"); - return false; - } - - // We only currently support 2D textures (plain, cubemapped, or texture array), which is by far the most common use case. - // The BasisU library does not support 1D or 3D textures at all. - if ((m_header.m_pixel_width < 1) || (m_header.m_pixel_height < 1) || (m_header.m_pixel_depth > 0)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Only 2D or cubemap textures are supported\n"); - return false; - } - - // Face count must be 1 or 6 - if ((m_header.m_face_count != 1) && (m_header.m_face_count != 6)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid face count, file is corrupted or invalid\n"); - return false; - } - - if (m_header.m_face_count > 1) - { - // 3.4: Make sure cubemaps are square. - if (m_header.m_pixel_width != m_header.m_pixel_height) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Cubemap is not square\n"); - return false; - } - } - - // 3.7 levelCount: "levelCount=0 is allowed, except for block-compressed formats" - if (m_header.m_level_count < 1) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid level count\n"); - return false; - } - - // Sanity check the level count. - if (m_header.m_level_count > KTX2_MAX_SUPPORTED_LEVEL_COUNT) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Too many levels or file is corrupted or invalid\n"); - return false; - } - - if (m_header.m_supercompression_scheme > KTX2_SS_ZSTANDARD) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid/unsupported supercompression or file is corrupted or invalid\n"); - return false; - } - - if (m_header.m_supercompression_scheme == KTX2_SS_BASISLZ) - { - if (m_header.m_sgd_byte_length <= sizeof(ktx2_etc1s_global_data_header)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Supercompression global data is too small\n"); - return false; - } - - if (m_header.m_sgd_byte_offset < sizeof(ktx2_header)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Supercompression global data offset is too low\n"); - return false; - } - - if (m_header.m_sgd_byte_offset + m_header.m_sgd_byte_length > m_data_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Supercompression global data offset and/or length is too high\n"); - return false; - } - } - - if (!m_levels.try_resize(m_header.m_level_count)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Out of memory\n"); - return false; - } - - const uint32_t level_index_size_in_bytes = basisu::maximum(1U, (uint32_t)m_header.m_level_count) * sizeof(ktx2_level_index); - - if ((sizeof(ktx2_header) + level_index_size_in_bytes) > m_data_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: File is too small (can't read level index array)\n"); - return false; - } - - memcpy(&m_levels[0], m_pData + sizeof(ktx2_header), level_index_size_in_bytes); - - // Sanity check the level offsets and byte sizes - for (uint32_t i = 0; i < m_levels.size(); i++) - { - if (m_levels[i].m_byte_offset < sizeof(ktx2_header)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid level offset (too low)\n"); - return false; - } - - if (!m_levels[i].m_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid level byte length\n"); - } - - if ((m_levels[i].m_byte_offset + m_levels[i].m_byte_length) > m_data_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid level offset and/or length\n"); - return false; - } - - const uint64_t MAX_SANE_LEVEL_UNCOMP_SIZE = 2048ULL * 1024ULL * 1024ULL; - - if (m_levels[i].m_uncompressed_byte_length >= MAX_SANE_LEVEL_UNCOMP_SIZE) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid level offset (too large)\n"); - return false; - } - - if (m_header.m_supercompression_scheme == KTX2_SS_BASISLZ) - { - if (m_levels[i].m_uncompressed_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid uncompressed length (0)\n"); - return false; - } - } - else if (m_header.m_supercompression_scheme >= KTX2_SS_ZSTANDARD) - { - if (!m_levels[i].m_uncompressed_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid uncompressed length (1)\n"); - return false; - } - } - } - - const uint32_t DFD_MINIMUM_SIZE = 44, DFD_MAXIMUM_SIZE = 60; - if ((m_header.m_dfd_byte_length != DFD_MINIMUM_SIZE) && (m_header.m_dfd_byte_length != DFD_MAXIMUM_SIZE)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Unsupported DFD size\n"); - return false; - } - - if (((m_header.m_dfd_byte_offset + m_header.m_dfd_byte_length) > m_data_size) || (m_header.m_dfd_byte_offset < sizeof(ktx2_header))) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid DFD offset and/or length\n"); - return false; - } - - const uint8_t* pDFD = m_pData + m_header.m_dfd_byte_offset; - - if (!m_dfd.try_resize(m_header.m_dfd_byte_length)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Out of memory\n"); - return false; - } - - memcpy(m_dfd.data(), pDFD, m_header.m_dfd_byte_length); - - // This is all hard coded for only ETC1S and UASTC. - uint32_t dfd_total_size = basisu::read_le_dword(pDFD); - - // 3.10.3: Sanity check - if (dfd_total_size != m_header.m_dfd_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: DFD size validation failed (1)\n"); - return false; - } - - // 3.10.3: More sanity checking - if (m_header.m_kvd_byte_length) - { - if (dfd_total_size != m_header.m_kvd_byte_offset - m_header.m_dfd_byte_offset) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: DFD size validation failed (2)\n"); - return false; - } - } - - const uint32_t dfd_bits = basisu::read_le_dword(pDFD + 3 * sizeof(uint32_t)); - const uint32_t sample_channel0 = basisu::read_le_dword(pDFD + 7 * sizeof(uint32_t)); - - m_dfd_color_model = dfd_bits & 255; - m_dfd_color_prims = (ktx2_df_color_primaries)((dfd_bits >> 8) & 255); - m_dfd_transfer_func = (dfd_bits >> 16) & 255; - m_dfd_flags = (dfd_bits >> 24) & 255; - - // See 3.10.1.Restrictions - if ((m_dfd_transfer_func != KTX2_KHR_DF_TRANSFER_LINEAR) && (m_dfd_transfer_func != KTX2_KHR_DF_TRANSFER_SRGB)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Invalid DFD transfer function\n"); - return false; - } - - if (m_dfd_color_model == KTX2_KDF_DF_MODEL_ETC1S) - { - m_format = basist::basis_tex_format::cETC1S; - - // 3.10.2: "Whether the image has 1 or 2 slices can be determined from the DFD's sample count." - // If m_has_alpha is true it may be 2-channel RRRG or 4-channel RGBA, but we let the caller deal with that. - m_has_alpha = (m_header.m_dfd_byte_length == 60); - - m_dfd_samples = m_has_alpha ? 2 : 1; - m_dfd_chan0 = (ktx2_df_channel_id)((sample_channel0 >> 24) & 15); - - if (m_has_alpha) - { - const uint32_t sample_channel1 = basisu::read_le_dword(pDFD + 11 * sizeof(uint32_t)); - m_dfd_chan1 = (ktx2_df_channel_id)((sample_channel1 >> 24) & 15); - } - } - else if (m_dfd_color_model == KTX2_KDF_DF_MODEL_UASTC) - { - m_format = basist::basis_tex_format::cUASTC4x4; - - m_dfd_samples = 1; - m_dfd_chan0 = (ktx2_df_channel_id)((sample_channel0 >> 24) & 15); - - // We're assuming "DATA" means RGBA so it has alpha. - m_has_alpha = (m_dfd_chan0 == KTX2_DF_CHANNEL_UASTC_RGBA) || (m_dfd_chan0 == KTX2_DF_CHANNEL_UASTC_RRRG); - } - else - { - // Unsupported DFD color model. - BASISU_DEVEL_ERROR("ktx2_transcoder::init: Unsupported DFD color model\n"); - return false; - } - - if (!read_key_values()) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::init: read_key_values() failed\n"); - return false; - } - - // Check for a KTXanimData key - for (uint32_t i = 0; i < m_key_values.size(); i++) - { - if (strcmp(reinterpret_cast(m_key_values[i].m_key.data()), "KTXanimData") == 0) - { - m_is_video = true; - break; - } - } - - return true; - } - - uint32_t ktx2_transcoder::get_etc1s_image_descs_image_flags(uint32_t level_index, uint32_t layer_index, uint32_t face_index) const - { - const uint32_t etc1s_image_index = - (level_index * basisu::maximum(m_header.m_layer_count, 1) * m_header.m_face_count) + - layer_index * m_header.m_face_count + - face_index; - - if (etc1s_image_index >= get_etc1s_image_descs().size()) - { - assert(0); - return 0; - } - - return get_etc1s_image_descs()[etc1s_image_index].m_image_flags; - } - - const basisu::uint8_vec* ktx2_transcoder::find_key(const std::string& key_name) const - { - for (uint32_t i = 0; i < m_key_values.size(); i++) - if (strcmp((const char *)m_key_values[i].m_key.data(), key_name.c_str()) == 0) - return &m_key_values[i].m_value; - - return nullptr; - } - - bool ktx2_transcoder::start_transcoding() - { - if (!m_pData) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::start_transcoding: Must call init() first\n"); - return false; - } - - if (m_header.m_supercompression_scheme == KTX2_SS_BASISLZ) - { - // Check if we've already decompressed the ETC1S global data. If so don't unpack it again. - if (!m_etc1s_transcoder.get_endpoints().empty()) - return true; - - if (!decompress_etc1s_global_data()) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::start_transcoding: decompress_etc1s_global_data() failed\n"); - return false; - } - - if (!m_is_video) - { - // See if there are any P-frames. If so it must be a video, even if there wasn't a KTXanimData key. - // Video cannot be a cubemap, and it must be a texture array. - if ((m_header.m_face_count == 1) && (m_header.m_layer_count > 1)) - { - for (uint32_t i = 0; i < m_etc1s_image_descs.size(); i++) - { - if (m_etc1s_image_descs[i].m_image_flags & KTX2_IMAGE_IS_P_FRAME) - { - m_is_video = true; - break; - } - } - } - } - } - else if (m_header.m_supercompression_scheme == KTX2_SS_ZSTANDARD) - { -#if !BASISD_SUPPORT_KTX2_ZSTD - BASISU_DEVEL_ERROR("ktx2_transcoder::start_transcoding: File uses zstd supercompression, but zstd support was not enabled at compilation time (BASISD_SUPPORT_KTX2_ZSTD == 0)\n"); - return false; -#endif - } - - return true; - } - - bool ktx2_transcoder::get_image_level_info(ktx2_image_level_info& level_info, uint32_t level_index, uint32_t layer_index, uint32_t face_index) const - { - if (level_index >= m_levels.size()) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::get_image_level_info: level_index >= m_levels.size()\n"); - return false; - } - - if (m_header.m_face_count > 1) - { - if (face_index >= 6) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::get_image_level_info: face_index >= 6\n"); - return false; - } - } - else if (face_index != 0) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::get_image_level_info: face_index != 0\n"); - return false; - } - - if (layer_index >= basisu::maximum(m_header.m_layer_count, 1)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::get_image_level_info: layer_index >= maximum(m_header.m_layer_count, 1)\n"); - return false; - } - - const uint32_t level_width = basisu::maximum(m_header.m_pixel_width >> level_index, 1); - const uint32_t level_height = basisu::maximum(m_header.m_pixel_height >> level_index, 1); - const uint32_t num_blocks_x = (level_width + 3) >> 2; - const uint32_t num_blocks_y = (level_height + 3) >> 2; - - level_info.m_face_index = face_index; - level_info.m_layer_index = layer_index; - level_info.m_level_index = level_index; - level_info.m_orig_width = level_width; - level_info.m_orig_height = level_height; - level_info.m_width = num_blocks_x * 4; - level_info.m_height = num_blocks_y * 4; - level_info.m_num_blocks_x = num_blocks_x; - level_info.m_num_blocks_y = num_blocks_y; - level_info.m_total_blocks = num_blocks_x * num_blocks_y; - level_info.m_alpha_flag = m_has_alpha; - level_info.m_iframe_flag = false; - if (m_etc1s_image_descs.size()) - { - const uint32_t etc1s_image_index = - (level_index * basisu::maximum(m_header.m_layer_count, 1) * m_header.m_face_count) + - layer_index * m_header.m_face_count + - face_index; - - level_info.m_iframe_flag = (m_etc1s_image_descs[etc1s_image_index].m_image_flags & KTX2_IMAGE_IS_P_FRAME) == 0; - } - - return true; - } - - bool ktx2_transcoder::transcode_image_level( - uint32_t level_index, uint32_t layer_index, uint32_t face_index, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - basist::transcoder_texture_format fmt, - uint32_t decode_flags, uint32_t output_row_pitch_in_blocks_or_pixels, uint32_t output_rows_in_pixels, int channel0, int channel1, - ktx2_transcoder_state* pState) - { - if (!m_pData) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: Must call init() first\n"); - return false; - } - - if (!pState) - pState = &m_def_transcoder_state; - - if (level_index >= m_levels.size()) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: level_index >= m_levels.size()\n"); - return false; - } - - if (m_header.m_face_count > 1) - { - if (face_index >= 6) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: face_index >= 6\n"); - return false; - } - } - else if (face_index != 0) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: face_index != 0\n"); - return false; - } - - if (layer_index >= basisu::maximum(m_header.m_layer_count, 1)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: layer_index >= maximum(m_header.m_layer_count, 1)\n"); - return false; - } - - const uint8_t* pComp_level_data = m_pData + m_levels[level_index].m_byte_offset; - uint64_t comp_level_data_size = m_levels[level_index].m_byte_length; - - const uint8_t* pUncomp_level_data = pComp_level_data; - uint64_t uncomp_level_data_size = comp_level_data_size; - - if (uncomp_level_data_size > UINT32_MAX) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: uncomp_level_data_size > UINT32_MAX\n"); - return false; - } - - if (m_header.m_supercompression_scheme == KTX2_SS_ZSTANDARD) - { - // Check if we've already decompressed this level's supercompressed data. - if ((int)level_index != pState->m_uncomp_data_level_index) - { - // Uncompress the entire level's supercompressed data. - if (!decompress_level_data(level_index, pState->m_level_uncomp_data)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: decompress_level_data() failed\n"); - return false; - } - pState->m_uncomp_data_level_index = level_index; - } - - pUncomp_level_data = pState->m_level_uncomp_data.data(); - uncomp_level_data_size = pState->m_level_uncomp_data.size(); - } - - const uint32_t level_width = basisu::maximum(m_header.m_pixel_width >> level_index, 1); - const uint32_t level_height = basisu::maximum(m_header.m_pixel_height >> level_index, 1); - const uint32_t num_blocks_x = (level_width + 3) >> 2; - const uint32_t num_blocks_y = (level_height + 3) >> 2; - - if (m_format == basist::basis_tex_format::cETC1S) - { - // Ensure start_transcoding() was called. - if (m_etc1s_transcoder.get_endpoints().empty()) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: must call start_transcoding() first\n"); - return false; - } - - const uint32_t etc1s_image_index = - (level_index * basisu::maximum(m_header.m_layer_count, 1) * m_header.m_face_count) + - layer_index * m_header.m_face_count + - face_index; - - // Sanity check - if (etc1s_image_index >= m_etc1s_image_descs.size()) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: etc1s_image_index >= m_etc1s_image_descs.size()\n"); - assert(0); - return false; - } - - if (static_cast(m_data_size) != m_data_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: File is too large\n"); - return false; - } - - const ktx2_etc1s_image_desc& image_desc = m_etc1s_image_descs[etc1s_image_index]; - - if (!m_etc1s_transcoder.transcode_image(fmt, - pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, m_pData, static_cast(m_data_size), - num_blocks_x, num_blocks_y, level_width, level_height, - level_index, - m_levels[level_index].m_byte_offset + image_desc.m_rgb_slice_byte_offset, image_desc.m_rgb_slice_byte_length, - image_desc.m_alpha_slice_byte_length ? (m_levels[level_index].m_byte_offset + image_desc.m_alpha_slice_byte_offset) : 0, image_desc.m_alpha_slice_byte_length, - decode_flags, m_has_alpha, - m_is_video, output_row_pitch_in_blocks_or_pixels, &pState->m_transcoder_state, output_rows_in_pixels)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: ETC1S transcode_image() failed, this is either a bug or the file is corrupted/invalid\n"); - return false; - } - } - else if (m_format == basist::basis_tex_format::cUASTC4x4) - { - // Compute length and offset to uncompressed 2D UASTC texture data, given the face/layer indices. - assert(uncomp_level_data_size == m_levels[level_index].m_uncompressed_byte_length); - const uint32_t total_2D_image_size = num_blocks_x * num_blocks_y * KTX2_UASTC_BLOCK_SIZE; - - const uint32_t uncomp_ofs = (layer_index * m_header.m_face_count + face_index) * total_2D_image_size; - - // Sanity checks - if (uncomp_ofs >= uncomp_level_data_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: uncomp_ofs >= total_2D_image_size\n"); - return false; - } - - if ((uncomp_level_data_size - uncomp_ofs) < total_2D_image_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: (uncomp_level_data_size - uncomp_ofs) < total_2D_image_size\n"); - return false; - } - - if (!m_uastc_transcoder.transcode_image(fmt, - pOutput_blocks, output_blocks_buf_size_in_blocks_or_pixels, - (const uint8_t*)pUncomp_level_data + uncomp_ofs, (uint32_t)total_2D_image_size, num_blocks_x, num_blocks_y, level_width, level_height, level_index, - 0, (uint32_t)total_2D_image_size, - decode_flags, m_has_alpha, m_is_video, output_row_pitch_in_blocks_or_pixels, nullptr, output_rows_in_pixels, channel0, channel1)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: UASTC transcode_image() failed, this is either a bug or the file is corrupted/invalid\n"); - return false; - } - } - else - { - // Shouldn't get here. - BASISU_DEVEL_ERROR("ktx2_transcoder::transcode_image_2D: Internal error\n"); - assert(0); - return false; - } - - return true; - } - - bool ktx2_transcoder::decompress_level_data(uint32_t level_index, basisu::uint8_vec& uncomp_data) - { - const uint8_t* pComp_data = m_levels[level_index].m_byte_offset + m_pData; - const uint64_t comp_size = m_levels[level_index].m_byte_length; - - const uint64_t uncomp_size = m_levels[level_index].m_uncompressed_byte_length; - - if (((size_t)comp_size) != comp_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_level_data: Compressed data too large\n"); - return false; - } - if (((size_t)uncomp_size) != uncomp_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_level_data: Uncompressed data too large\n"); - return false; - } - - if (!uncomp_data.try_resize((size_t)uncomp_size)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_level_data: Out of memory\n"); - return false; - } - - if (m_header.m_supercompression_scheme == KTX2_SS_ZSTANDARD) - { -#if BASISD_SUPPORT_KTX2_ZSTD - size_t actualUncompSize = ZSTD_decompress(uncomp_data.data(), (size_t)uncomp_size, pComp_data, (size_t)comp_size); - if (ZSTD_isError(actualUncompSize)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_level_data: Zstd decompression failed, file is invalid or corrupted\n"); - return false; - } - if (actualUncompSize != uncomp_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_level_data: Zstd decompression returned too few bytes, file is invalid or corrupted\n"); - return false; - } -#else - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_level_data: File uses Zstd supercompression, but Zstd support was not enabled at compile time (BASISD_SUPPORT_KTX2_ZSTD is 0)\n"); - return false; -#endif - } - - return true; - } - - bool ktx2_transcoder::decompress_etc1s_global_data() - { - // Note: we don't actually support 3D textures in here yet - //uint32_t layer_pixel_depth = basisu::maximum(m_header.m_pixel_depth, 1); - //for (uint32_t i = 1; i < m_header.m_level_count; i++) - // layer_pixel_depth += basisu::maximum(m_header.m_pixel_depth >> i, 1); - - const uint32_t image_count = basisu::maximum(m_header.m_layer_count, 1) * m_header.m_face_count * m_header.m_level_count; - assert(image_count); - - const uint8_t* pSrc = m_pData + m_header.m_sgd_byte_offset; - - memcpy(&m_etc1s_header, pSrc, sizeof(ktx2_etc1s_global_data_header)); - pSrc += sizeof(ktx2_etc1s_global_data_header); - - if ((!m_etc1s_header.m_endpoints_byte_length) || (!m_etc1s_header.m_selectors_byte_length) || (!m_etc1s_header.m_tables_byte_length)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: Invalid ETC1S global data\n"); - return false; - } - - if ((!m_etc1s_header.m_endpoint_count) || (!m_etc1s_header.m_selector_count)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: endpoint and/or selector count is 0, file is invalid or corrupted\n"); - return false; - } - - // Sanity check the ETC1S header. - if ((sizeof(ktx2_etc1s_global_data_header) + - sizeof(ktx2_etc1s_image_desc) * image_count + - m_etc1s_header.m_endpoints_byte_length + - m_etc1s_header.m_selectors_byte_length + - m_etc1s_header.m_tables_byte_length + - m_etc1s_header.m_extended_byte_length) > m_header.m_sgd_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: SGD byte length is too small, file is invalid or corrupted\n"); - return false; - } - - if (!m_etc1s_image_descs.try_resize(image_count)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: Out of memory\n"); - return false; - } - - memcpy(m_etc1s_image_descs.data(), pSrc, sizeof(ktx2_etc1s_image_desc) * image_count); - pSrc += sizeof(ktx2_etc1s_image_desc) * image_count; - - // Sanity check the ETC1S image descs - for (uint32_t i = 0; i < image_count; i++) - { - // m_etc1s_transcoder.transcode_image() will validate the slice offsets/lengths before transcoding. - - if (!m_etc1s_image_descs[i].m_rgb_slice_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: ETC1S image descs sanity check failed (1)\n"); - return false; - } - - if (m_has_alpha) - { - if (!m_etc1s_image_descs[i].m_alpha_slice_byte_length) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: ETC1S image descs sanity check failed (2)\n"); - return false; - } - } - } - - const uint8_t* pEndpoint_data = pSrc; - const uint8_t* pSelector_data = pSrc + m_etc1s_header.m_endpoints_byte_length; - const uint8_t* pTables_data = pSrc + m_etc1s_header.m_endpoints_byte_length + m_etc1s_header.m_selectors_byte_length; - - if (!m_etc1s_transcoder.decode_tables(pTables_data, m_etc1s_header.m_tables_byte_length)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: decode_tables() failed, file is invalid or corrupted\n"); - return false; - } - - if (!m_etc1s_transcoder.decode_palettes( - m_etc1s_header.m_endpoint_count, pEndpoint_data, m_etc1s_header.m_endpoints_byte_length, - m_etc1s_header.m_selector_count, pSelector_data, m_etc1s_header.m_selectors_byte_length)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::decompress_etc1s_global_data: decode_palettes() failed, file is likely corrupted\n"); - return false; - } - - return true; - } - - bool ktx2_transcoder::read_key_values() - { - if (!m_header.m_kvd_byte_length) - { - if (m_header.m_kvd_byte_offset) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Invalid KVD byte offset (it should be zero when the length is zero)\n"); - return false; - } - - return true; - } - - if (m_header.m_kvd_byte_offset < sizeof(ktx2_header)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Invalid KVD byte offset\n"); - return false; - } - - if ((m_header.m_kvd_byte_offset + m_header.m_kvd_byte_length) > m_data_size) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Invalid KVD byte offset and/or length\n"); - return false; - } - - const uint8_t* pSrc = m_pData + m_header.m_kvd_byte_offset; - uint32_t src_left = m_header.m_kvd_byte_length; - - if (!m_key_values.try_reserve(8)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Out of memory\n"); - return false; - } - - while (src_left > sizeof(uint32_t)) - { - uint32_t l = basisu::read_le_dword(pSrc); - - pSrc += sizeof(uint32_t); - src_left -= sizeof(uint32_t); - - if (l < 2) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Failed reading key value fields (0)\n"); - return false; - } - - if (src_left < l) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Failed reading key value fields (1)\n"); - return false; - } - - if (!m_key_values.try_resize(m_key_values.size() + 1)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Out of memory\n"); - return false; - } - - basisu::uint8_vec& key_data = m_key_values.back().m_key; - basisu::uint8_vec& value_data = m_key_values.back().m_value; - - do - { - if (!l) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Failed reading key value fields (2)\n"); - return false; - } - - if (!key_data.try_push_back(*pSrc++)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Out of memory\n"); - return false; - } - - src_left--; - l--; - - } while (key_data.back()); - - if (!value_data.try_resize(l)) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Out of memory\n"); - return false; - } - - if (l) - { - memcpy(value_data.data(), pSrc, l); - pSrc += l; - src_left -= l; - } - - uint32_t ofs = (uint32_t)(pSrc - m_pData) & 3; - uint32_t alignment_bytes = (4 - ofs) & 3; - - if (src_left < alignment_bytes) - { - BASISU_DEVEL_ERROR("ktx2_transcoder::read_key_values: Failed reading key value fields (3)\n"); - return false; - } - - pSrc += alignment_bytes; - src_left -= alignment_bytes; - } - - return true; - } - -#endif // BASISD_SUPPORT_KTX2 - - bool basisu_transcoder_supports_ktx2() - { -#if BASISD_SUPPORT_KTX2 - return true; -#else - return false; -#endif - } - - bool basisu_transcoder_supports_ktx2_zstd() - { -#if BASISD_SUPPORT_KTX2_ZSTD - return true; -#else - return false; -#endif - } - -} // namespace basist diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder.h b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder.h deleted file mode 100644 index 3327e8ddb..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder.h +++ /dev/null @@ -1,936 +0,0 @@ -// basisu_transcoder.h -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// Important: If compiling with gcc, be sure strict aliasing is disabled: -fno-strict-aliasing -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once - -// By default KTX2 support is enabled to simplify compilation. This implies the need for the Zstandard library (which we distribute as a single source file in the "zstd" directory) by default. -// Set BASISD_SUPPORT_KTX2 to 0 to completely disable KTX2 support as well as Zstd/miniz usage which is only required for UASTC supercompression in KTX2 files. -// Also see BASISD_SUPPORT_KTX2_ZSTD in basisu_transcoder.cpp, which individually disables Zstd usage. -#ifndef BASISD_SUPPORT_KTX2 - #define BASISD_SUPPORT_KTX2 1 -#endif - -// Set BASISD_SUPPORT_KTX2_ZSTD to 0 to disable Zstd usage and KTX2 UASTC Zstd supercompression support -#ifndef BASISD_SUPPORT_KTX2_ZSTD - #define BASISD_SUPPORT_KTX2_ZSTD 1 -#endif - -// Set BASISU_FORCE_DEVEL_MESSAGES to 1 to enable debug printf()'s whenever an error occurs, for easier debugging during development. -#ifndef BASISU_FORCE_DEVEL_MESSAGES - #define BASISU_FORCE_DEVEL_MESSAGES 0 -#endif - -#include "basisu_transcoder_internal.h" -#include "basisu_transcoder_uastc.h" -#include "basisu_file_headers.h" - -namespace basist -{ - // High-level composite texture formats supported by the transcoder. - // Each of these texture formats directly correspond to OpenGL/D3D/Vulkan etc. texture formats. - // Notes: - // - If you specify a texture format that supports alpha, but the .basis file doesn't have alpha, the transcoder will automatically output a - // fully opaque (255) alpha channel. - // - The PVRTC1 texture formats only support power of 2 dimension .basis files, but this may be relaxed in a future version. - // - The PVRTC1 transcoders are real-time encoders, so don't expect the highest quality. We may add a slower encoder with improved quality. - // - These enums must be kept in sync with Javascript code that calls the transcoder. - enum class transcoder_texture_format - { - // Compressed formats - - // ETC1-2 - cTFETC1_RGB = 0, // Opaque only, returns RGB or alpha data if cDecodeFlagsTranscodeAlphaDataToOpaqueFormats flag is specified - cTFETC2_RGBA = 1, // Opaque+alpha, ETC2_EAC_A8 block followed by a ETC1 block, alpha channel will be opaque for opaque .basis files - - // BC1-5, BC7 (desktop, some mobile devices) - cTFBC1_RGB = 2, // Opaque only, no punchthrough alpha support yet, transcodes alpha slice if cDecodeFlagsTranscodeAlphaDataToOpaqueFormats flag is specified - cTFBC3_RGBA = 3, // Opaque+alpha, BC4 followed by a BC1 block, alpha channel will be opaque for opaque .basis files - cTFBC4_R = 4, // Red only, alpha slice is transcoded to output if cDecodeFlagsTranscodeAlphaDataToOpaqueFormats flag is specified - cTFBC5_RG = 5, // XY: Two BC4 blocks, X=R and Y=Alpha, .basis file should have alpha data (if not Y will be all 255's) - cTFBC7_RGBA = 6, // RGB or RGBA, mode 5 for ETC1S, modes (1,2,3,5,6,7) for UASTC - - // PVRTC1 4bpp (mobile, PowerVR devices) - cTFPVRTC1_4_RGB = 8, // Opaque only, RGB or alpha if cDecodeFlagsTranscodeAlphaDataToOpaqueFormats flag is specified, nearly lowest quality of any texture format. - cTFPVRTC1_4_RGBA = 9, // Opaque+alpha, most useful for simple opacity maps. If .basis file doesn't have alpha cTFPVRTC1_4_RGB will be used instead. Lowest quality of any supported texture format. - - // ASTC (mobile, Intel devices, hopefully all desktop GPU's one day) - cTFASTC_4x4_RGBA = 10, // Opaque+alpha, ASTC 4x4, alpha channel will be opaque for opaque .basis files. Transcoder uses RGB/RGBA/L/LA modes, void extent, and up to two ([0,47] and [0,255]) endpoint precisions. - - // ATC (mobile, Adreno devices, this is a niche format) - cTFATC_RGB = 11, // Opaque, RGB or alpha if cDecodeFlagsTranscodeAlphaDataToOpaqueFormats flag is specified. ATI ATC (GL_ATC_RGB_AMD) - cTFATC_RGBA = 12, // Opaque+alpha, alpha channel will be opaque for opaque .basis files. ATI ATC (GL_ATC_RGBA_INTERPOLATED_ALPHA_AMD) - - // FXT1 (desktop, Intel devices, this is a super obscure format) - cTFFXT1_RGB = 17, // Opaque only, uses exclusively CC_MIXED blocks. Notable for having a 8x4 block size. GL_3DFX_texture_compression_FXT1 is supported on Intel integrated GPU's (such as HD 630). - // Punch-through alpha is relatively easy to support, but full alpha is harder. This format is only here for completeness so opaque-only is fine for now. - // See the BASISU_USE_ORIGINAL_3DFX_FXT1_ENCODING macro in basisu_transcoder_internal.h. - - cTFPVRTC2_4_RGB = 18, // Opaque-only, almost BC1 quality, much faster to transcode and supports arbitrary texture dimensions (unlike PVRTC1 RGB). - cTFPVRTC2_4_RGBA = 19, // Opaque+alpha, slower to encode than cTFPVRTC2_4_RGB. Premultiplied alpha is highly recommended, otherwise the color channel can leak into the alpha channel on transparent blocks. - - cTFETC2_EAC_R11 = 20, // R only (ETC2 EAC R11 unsigned) - cTFETC2_EAC_RG11 = 21, // RG only (ETC2 EAC RG11 unsigned), R=opaque.r, G=alpha - for tangent space normal maps - - // Uncompressed (raw pixel) formats - cTFRGBA32 = 13, // 32bpp RGBA image stored in raster (not block) order in memory, R is first byte, A is last byte. - cTFRGB565 = 14, // 16bpp RGB image stored in raster (not block) order in memory, R at bit position 11 - cTFBGR565 = 15, // 16bpp RGB image stored in raster (not block) order in memory, R at bit position 0 - cTFRGBA4444 = 16, // 16bpp RGBA image stored in raster (not block) order in memory, R at bit position 12, A at bit position 0 - - cTFTotalTextureFormats = 22, - - // Old enums for compatibility with code compiled against previous versions - cTFETC1 = cTFETC1_RGB, - cTFETC2 = cTFETC2_RGBA, - cTFBC1 = cTFBC1_RGB, - cTFBC3 = cTFBC3_RGBA, - cTFBC4 = cTFBC4_R, - cTFBC5 = cTFBC5_RG, - - // Previously, the caller had some control over which BC7 mode the transcoder output. We've simplified this due to UASTC, which supports numerous modes. - cTFBC7_M6_RGB = cTFBC7_RGBA, // Opaque only, RGB or alpha if cDecodeFlagsTranscodeAlphaDataToOpaqueFormats flag is specified. Highest quality of all the non-ETC1 formats. - cTFBC7_M5_RGBA = cTFBC7_RGBA, // Opaque+alpha, alpha channel will be opaque for opaque .basis files - cTFBC7_M6_OPAQUE_ONLY = cTFBC7_RGBA, - cTFBC7_M5 = cTFBC7_RGBA, - cTFBC7_ALT = 7, - - cTFASTC_4x4 = cTFASTC_4x4_RGBA, - - cTFATC_RGBA_INTERPOLATED_ALPHA = cTFATC_RGBA, - }; - - // For compressed texture formats, this returns the # of bytes per block. For uncompressed, it returns the # of bytes per pixel. - // NOTE: Previously, this function was called basis_get_bytes_per_block(), and it always returned 16*bytes_per_pixel for uncompressed formats which was confusing. - uint32_t basis_get_bytes_per_block_or_pixel(transcoder_texture_format fmt); - - // Returns format's name in ASCII - const char* basis_get_format_name(transcoder_texture_format fmt); - - // Returns block format name in ASCII - const char* basis_get_block_format_name(block_format fmt); - - // Returns true if the format supports an alpha channel. - bool basis_transcoder_format_has_alpha(transcoder_texture_format fmt); - - // Returns the basisu::texture_format corresponding to the specified transcoder_texture_format. - basisu::texture_format basis_get_basisu_texture_format(transcoder_texture_format fmt); - - // Returns the texture type's name in ASCII. - const char* basis_get_texture_type_name(basis_texture_type tex_type); - - // Returns true if the transcoder texture type is an uncompressed (raw pixel) format. - bool basis_transcoder_format_is_uncompressed(transcoder_texture_format tex_type); - - // Returns the # of bytes per pixel for uncompressed formats, or 0 for block texture formats. - uint32_t basis_get_uncompressed_bytes_per_pixel(transcoder_texture_format fmt); - - // Returns the block width for the specified texture format, which is currently either 4 or 8 for FXT1. - uint32_t basis_get_block_width(transcoder_texture_format tex_type); - - // Returns the block height for the specified texture format, which is currently always 4. - uint32_t basis_get_block_height(transcoder_texture_format tex_type); - - // Returns true if the specified format was enabled at compile time. - bool basis_is_format_supported(transcoder_texture_format tex_type, basis_tex_format fmt = basis_tex_format::cETC1S); - - // Validates that the output buffer is large enough to hold the entire transcoded texture. - // For uncompressed texture formats, most input parameters are in pixels, not blocks. Blocks are 4x4 pixels. - bool basis_validate_output_buffer_size(transcoder_texture_format target_format, - uint32_t output_blocks_buf_size_in_blocks_or_pixels, - uint32_t orig_width, uint32_t orig_height, - uint32_t output_row_pitch_in_blocks_or_pixels, - uint32_t output_rows_in_pixels, - uint32_t total_slice_blocks); - - class basisu_transcoder; - - // This struct holds all state used during transcoding. For video, it needs to persist between image transcodes (it holds the previous frame). - // For threading you can use one state per thread. - struct basisu_transcoder_state - { - struct block_preds - { - uint16_t m_endpoint_index; - uint8_t m_pred_bits; - }; - - basisu::vector m_block_endpoint_preds[2]; - - enum { cMaxPrevFrameLevels = 16 }; - basisu::vector m_prev_frame_indices[2][cMaxPrevFrameLevels]; // [alpha_flag][level_index] - - void clear() - { - for (uint32_t i = 0; i < 2; i++) - { - m_block_endpoint_preds[i].clear(); - - for (uint32_t j = 0; j < cMaxPrevFrameLevels; j++) - m_prev_frame_indices[i][j].clear(); - } - } - }; - - // Low-level helper class that does the actual transcoding. - class basisu_lowlevel_etc1s_transcoder - { - friend class basisu_transcoder; - - public: - basisu_lowlevel_etc1s_transcoder(); - - void set_global_codebooks(const basisu_lowlevel_etc1s_transcoder* pGlobal_codebook) { m_pGlobal_codebook = pGlobal_codebook; } - const basisu_lowlevel_etc1s_transcoder* get_global_codebooks() const { return m_pGlobal_codebook; } - - bool decode_palettes( - uint32_t num_endpoints, const uint8_t* pEndpoints_data, uint32_t endpoints_data_size, - uint32_t num_selectors, const uint8_t* pSelectors_data, uint32_t selectors_data_size); - - bool decode_tables(const uint8_t* pTable_data, uint32_t table_data_size); - - bool transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, const bool is_video, const bool is_alpha_slice, const uint32_t level_index, const uint32_t orig_width, const uint32_t orig_height, uint32_t output_row_pitch_in_blocks_or_pixels = 0, - basisu_transcoder_state* pState = nullptr, bool astc_transcode_alpha = false, void* pAlpha_blocks = nullptr, uint32_t output_rows_in_pixels = 0); - - bool transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, const basis_file_header& header, const basis_slice_desc& slice_desc, uint32_t output_row_pitch_in_blocks_or_pixels = 0, - basisu_transcoder_state* pState = nullptr, bool astc_transcode_alpha = false, void* pAlpha_blocks = nullptr, uint32_t output_rows_in_pixels = 0) - { - return transcode_slice(pDst_blocks, num_blocks_x, num_blocks_y, pImage_data, image_data_size, fmt, output_block_or_pixel_stride_in_bytes, bc1_allow_threecolor_blocks, - header.m_tex_type == cBASISTexTypeVideoFrames, (slice_desc.m_flags & cSliceDescFlagsHasAlpha) != 0, slice_desc.m_level_index, - slice_desc.m_orig_width, slice_desc.m_orig_height, output_row_pitch_in_blocks_or_pixels, pState, - astc_transcode_alpha, - pAlpha_blocks, - output_rows_in_pixels); - } - - // Container independent transcoding - bool transcode_image( - transcoder_texture_format target_format, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - const uint8_t* pCompressed_data, uint32_t compressed_data_length, - uint32_t num_blocks_x, uint32_t num_blocks_y, uint32_t orig_width, uint32_t orig_height, uint32_t level_index, - uint32_t rgb_offset, uint32_t rgb_length, uint32_t alpha_offset, uint32_t alpha_length, - uint32_t decode_flags = 0, - bool basis_file_has_alpha_slices = false, - bool is_video = false, - uint32_t output_row_pitch_in_blocks_or_pixels = 0, - basisu_transcoder_state* pState = nullptr, - uint32_t output_rows_in_pixels = 0); - - void clear() - { - m_local_endpoints.clear(); - m_local_selectors.clear(); - m_endpoint_pred_model.clear(); - m_delta_endpoint_model.clear(); - m_selector_model.clear(); - m_selector_history_buf_rle_model.clear(); - m_selector_history_buf_size = 0; - } - - // Low-level methods - typedef basisu::vector endpoint_vec; - const endpoint_vec& get_endpoints() const { return m_local_endpoints; } - - typedef basisu::vector selector_vec; - const selector_vec& get_selectors() const { return m_local_selectors; } - - private: - const basisu_lowlevel_etc1s_transcoder* m_pGlobal_codebook; - - endpoint_vec m_local_endpoints; - selector_vec m_local_selectors; - - huffman_decoding_table m_endpoint_pred_model, m_delta_endpoint_model, m_selector_model, m_selector_history_buf_rle_model; - - uint32_t m_selector_history_buf_size; - - basisu_transcoder_state m_def_state; - }; - - enum basisu_decode_flags - { - // PVRTC1: decode non-pow2 ETC1S texture level to the next larger power of 2 (not implemented yet, but we're going to support it). Ignored if the slice's dimensions are already a power of 2. - cDecodeFlagsPVRTCDecodeToNextPow2 = 2, - - // When decoding to an opaque texture format, if the basis file has alpha, decode the alpha slice instead of the color slice to the output texture format. - // This is primarily to allow decoding of textures with alpha to multiple ETC1 textures (one for color, another for alpha). - cDecodeFlagsTranscodeAlphaDataToOpaqueFormats = 4, - - // Forbid usage of BC1 3 color blocks (we don't support BC1 punchthrough alpha yet). - // This flag is used internally when decoding to BC3. - cDecodeFlagsBC1ForbidThreeColorBlocks = 8, - - // The output buffer contains alpha endpoint/selector indices. - // Used internally when decoding formats like ASTC that require both color and alpha data to be available when transcoding to the output format. - cDecodeFlagsOutputHasAlphaIndices = 16, - - cDecodeFlagsHighQuality = 32 - }; - - class basisu_lowlevel_uastc_transcoder - { - friend class basisu_transcoder; - - public: - basisu_lowlevel_uastc_transcoder(); - - bool transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, bool has_alpha, const uint32_t orig_width, const uint32_t orig_height, uint32_t output_row_pitch_in_blocks_or_pixels = 0, - basisu_transcoder_state* pState = nullptr, uint32_t output_rows_in_pixels = 0, int channel0 = -1, int channel1 = -1, uint32_t decode_flags = 0); - - bool transcode_slice(void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, const uint8_t* pImage_data, uint32_t image_data_size, block_format fmt, - uint32_t output_block_or_pixel_stride_in_bytes, bool bc1_allow_threecolor_blocks, const basis_file_header& header, const basis_slice_desc& slice_desc, uint32_t output_row_pitch_in_blocks_or_pixels = 0, - basisu_transcoder_state* pState = nullptr, uint32_t output_rows_in_pixels = 0, int channel0 = -1, int channel1 = -1, uint32_t decode_flags = 0) - { - return transcode_slice(pDst_blocks, num_blocks_x, num_blocks_y, pImage_data, image_data_size, fmt, - output_block_or_pixel_stride_in_bytes, bc1_allow_threecolor_blocks, (header.m_flags & cBASISHeaderFlagHasAlphaSlices) != 0, slice_desc.m_orig_width, slice_desc.m_orig_height, output_row_pitch_in_blocks_or_pixels, - pState, output_rows_in_pixels, channel0, channel1, decode_flags); - } - - // Container independent transcoding - bool transcode_image( - transcoder_texture_format target_format, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - const uint8_t* pCompressed_data, uint32_t compressed_data_length, - uint32_t num_blocks_x, uint32_t num_blocks_y, uint32_t orig_width, uint32_t orig_height, uint32_t level_index, - uint32_t slice_offset, uint32_t slice_length, - uint32_t decode_flags = 0, - bool has_alpha = false, - bool is_video = false, - uint32_t output_row_pitch_in_blocks_or_pixels = 0, - basisu_transcoder_state* pState = nullptr, - uint32_t output_rows_in_pixels = 0, - int channel0 = -1, int channel1 = -1); - }; - - struct basisu_slice_info - { - uint32_t m_orig_width; - uint32_t m_orig_height; - - uint32_t m_width; - uint32_t m_height; - - uint32_t m_num_blocks_x; - uint32_t m_num_blocks_y; - uint32_t m_total_blocks; - - uint32_t m_compressed_size; - - uint32_t m_slice_index; // the slice index in the .basis file - uint32_t m_image_index; // the source image index originally provided to the encoder - uint32_t m_level_index; // the mipmap level within this image - - uint32_t m_unpacked_slice_crc16; - - bool m_alpha_flag; // true if the slice has alpha data - bool m_iframe_flag; // true if the slice is an I-Frame - }; - - typedef basisu::vector basisu_slice_info_vec; - - struct basisu_image_info - { - uint32_t m_image_index; - uint32_t m_total_levels; - - uint32_t m_orig_width; - uint32_t m_orig_height; - - uint32_t m_width; - uint32_t m_height; - - uint32_t m_num_blocks_x; - uint32_t m_num_blocks_y; - uint32_t m_total_blocks; - - uint32_t m_first_slice_index; - - bool m_alpha_flag; // true if the image has alpha data - bool m_iframe_flag; // true if the image is an I-Frame - }; - - struct basisu_image_level_info - { - uint32_t m_image_index; - uint32_t m_level_index; - - uint32_t m_orig_width; - uint32_t m_orig_height; - - uint32_t m_width; - uint32_t m_height; - - uint32_t m_num_blocks_x; - uint32_t m_num_blocks_y; - uint32_t m_total_blocks; - - uint32_t m_first_slice_index; - - uint32_t m_rgb_file_ofs; - uint32_t m_rgb_file_len; - uint32_t m_alpha_file_ofs; - uint32_t m_alpha_file_len; - - bool m_alpha_flag; // true if the image has alpha data - bool m_iframe_flag; // true if the image is an I-Frame - }; - - struct basisu_file_info - { - uint32_t m_version; - uint32_t m_total_header_size; - - uint32_t m_total_selectors; - // will be 0 for UASTC or if the file uses global codebooks - uint32_t m_selector_codebook_ofs; - uint32_t m_selector_codebook_size; - - uint32_t m_total_endpoints; - // will be 0 for UASTC or if the file uses global codebooks - uint32_t m_endpoint_codebook_ofs; - uint32_t m_endpoint_codebook_size; - - uint32_t m_tables_ofs; - uint32_t m_tables_size; - - uint32_t m_slices_size; - - basis_texture_type m_tex_type; - uint32_t m_us_per_frame; - - // Low-level slice information (1 slice per image for color-only basis files, 2 for alpha basis files) - basisu_slice_info_vec m_slice_info; - - uint32_t m_total_images; // total # of images - basisu::vector m_image_mipmap_levels; // the # of mipmap levels for each image - - uint32_t m_userdata0; - uint32_t m_userdata1; - - basis_tex_format m_tex_format; // ETC1S, UASTC, etc. - - bool m_y_flipped; // true if the image was Y flipped - bool m_etc1s; // true if the file is ETC1S - bool m_has_alpha_slices; // true if the texture has alpha slices (for ETC1S: even slices RGB, odd slices alpha) - }; - - // High-level transcoder class which accepts .basis file data and allows the caller to query information about the file and transcode image levels to various texture formats. - // If you're just starting out this is the class you care about. - class basisu_transcoder - { - basisu_transcoder(basisu_transcoder&); - basisu_transcoder& operator= (const basisu_transcoder&); - - public: - basisu_transcoder(); - - // Validates the .basis file. This computes a crc16 over the entire file, so it's slow. - bool validate_file_checksums(const void* pData, uint32_t data_size, bool full_validation) const; - - // Quick header validation - no crc16 checks. - bool validate_header(const void* pData, uint32_t data_size) const; - - basis_texture_type get_texture_type(const void* pData, uint32_t data_size) const; - bool get_userdata(const void* pData, uint32_t data_size, uint32_t& userdata0, uint32_t& userdata1) const; - - // Returns the total number of images in the basis file (always 1 or more). - // Note that the number of mipmap levels for each image may differ, and that images may have different resolutions. - uint32_t get_total_images(const void* pData, uint32_t data_size) const; - - basis_tex_format get_tex_format(const void* pData, uint32_t data_size) const; - - // Returns the number of mipmap levels in an image. - uint32_t get_total_image_levels(const void* pData, uint32_t data_size, uint32_t image_index) const; - - // Returns basic information about an image. Note that orig_width/orig_height may not be a multiple of 4. - bool get_image_level_desc(const void* pData, uint32_t data_size, uint32_t image_index, uint32_t level_index, uint32_t& orig_width, uint32_t& orig_height, uint32_t& total_blocks) const; - - // Returns information about the specified image. - bool get_image_info(const void* pData, uint32_t data_size, basisu_image_info& image_info, uint32_t image_index) const; - - // Returns information about the specified image's mipmap level. - bool get_image_level_info(const void* pData, uint32_t data_size, basisu_image_level_info& level_info, uint32_t image_index, uint32_t level_index) const; - - // Get a description of the basis file and low-level information about each slice. - bool get_file_info(const void* pData, uint32_t data_size, basisu_file_info& file_info) const; - - // start_transcoding() must be called before calling transcode_slice() or transcode_image_level(). - // For ETC1S files, this call decompresses the selector/endpoint codebooks, so ideally you would only call this once per .basis file (not each image/mipmap level). - bool start_transcoding(const void* pData, uint32_t data_size); - - bool stop_transcoding(); - - // Returns true if start_transcoding() has been called. - bool get_ready_to_transcode() const { return m_ready_to_transcode; } - - // transcode_image_level() decodes a single mipmap level from the .basis file to any of the supported output texture formats. - // It'll first find the slice(s) to transcode, then call transcode_slice() one or two times to decode both the color and alpha texture data (or RG texture data from two slices for BC5). - // If the .basis file doesn't have alpha slices, the output alpha blocks will be set to fully opaque (all 255's). - // Currently, to decode to PVRTC1 the basis texture's dimensions in pixels must be a power of 2, due to PVRTC1 format requirements. - // output_blocks_buf_size_in_blocks_or_pixels should be at least the image level's total_blocks (num_blocks_x * num_blocks_y), or the total number of output pixels if fmt==cTFRGBA32. - // output_row_pitch_in_blocks_or_pixels: Number of blocks or pixels per row. If 0, the transcoder uses the slice's num_blocks_x or orig_width (NOT num_blocks_x * 4). Ignored for PVRTC1 (due to texture swizzling). - // output_rows_in_pixels: Ignored unless fmt is uncompressed (cRGBA32, etc.). The total number of output rows in the output buffer. If 0, the transcoder assumes the slice's orig_height (NOT num_blocks_y * 4). - // Notes: - // - basisu_transcoder_init() must have been called first to initialize the transcoder lookup tables before calling this function. - // - This method assumes the output texture buffer is readable. In some cases to handle alpha, the transcoder will write temporary data to the output texture in - // a first pass, which will be read in a second pass. - bool transcode_image_level( - const void* pData, uint32_t data_size, - uint32_t image_index, uint32_t level_index, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - transcoder_texture_format fmt, - uint32_t decode_flags = 0, uint32_t output_row_pitch_in_blocks_or_pixels = 0, basisu_transcoder_state* pState = nullptr, uint32_t output_rows_in_pixels = 0) const; - - // Finds the basis slice corresponding to the specified image/level/alpha params, or -1 if the slice can't be found. - int find_slice(const void* pData, uint32_t data_size, uint32_t image_index, uint32_t level_index, bool alpha_data) const; - - // transcode_slice() decodes a single slice from the .basis file. It's a low-level API - most likely you want to use transcode_image_level(). - // This is a low-level API, and will be needed to be called multiple times to decode some texture formats (like BC3, BC5, or ETC2). - // output_blocks_buf_size_in_blocks_or_pixels is just used for verification to make sure the output buffer is large enough. - // output_blocks_buf_size_in_blocks_or_pixels should be at least the image level's total_blocks (num_blocks_x * num_blocks_y), or the total number of output pixels if fmt==cTFRGBA32. - // output_block_stride_in_bytes: Number of bytes between each output block. - // output_row_pitch_in_blocks_or_pixels: Number of blocks or pixels per row. If 0, the transcoder uses the slice's num_blocks_x or orig_width (NOT num_blocks_x * 4). Ignored for PVRTC1 (due to texture swizzling). - // output_rows_in_pixels: Ignored unless fmt is cRGBA32. The total number of output rows in the output buffer. If 0, the transcoder assumes the slice's orig_height (NOT num_blocks_y * 4). - // Notes: - // - basisu_transcoder_init() must have been called first to initialize the transcoder lookup tables before calling this function. - bool transcode_slice(const void* pData, uint32_t data_size, uint32_t slice_index, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - block_format fmt, uint32_t output_block_stride_in_bytes, uint32_t decode_flags = 0, uint32_t output_row_pitch_in_blocks_or_pixels = 0, basisu_transcoder_state* pState = nullptr, void* pAlpha_blocks = nullptr, - uint32_t output_rows_in_pixels = 0, int channel0 = -1, int channel1 = -1) const; - - static void write_opaque_alpha_blocks( - uint32_t num_blocks_x, uint32_t num_blocks_y, - void* pOutput_blocks, block_format fmt, - uint32_t block_stride_in_bytes, uint32_t output_row_pitch_in_blocks_or_pixels); - - void set_global_codebooks(const basisu_lowlevel_etc1s_transcoder* pGlobal_codebook) { m_lowlevel_etc1s_decoder.set_global_codebooks(pGlobal_codebook); } - const basisu_lowlevel_etc1s_transcoder* get_global_codebooks() const { return m_lowlevel_etc1s_decoder.get_global_codebooks(); } - - const basisu_lowlevel_etc1s_transcoder& get_lowlevel_etc1s_decoder() const { return m_lowlevel_etc1s_decoder; } - basisu_lowlevel_etc1s_transcoder& get_lowlevel_etc1s_decoder() { return m_lowlevel_etc1s_decoder; } - - const basisu_lowlevel_uastc_transcoder& get_lowlevel_uastc_decoder() const { return m_lowlevel_uastc_decoder; } - basisu_lowlevel_uastc_transcoder& get_lowlevel_uastc_decoder() { return m_lowlevel_uastc_decoder; } - - private: - mutable basisu_lowlevel_etc1s_transcoder m_lowlevel_etc1s_decoder; - mutable basisu_lowlevel_uastc_transcoder m_lowlevel_uastc_decoder; - - bool m_ready_to_transcode; - - int find_first_slice_index(const void* pData, uint32_t data_size, uint32_t image_index, uint32_t level_index) const; - - bool validate_header_quick(const void* pData, uint32_t data_size) const; - }; - - // basisu_transcoder_init() MUST be called before a .basis file can be transcoded. - void basisu_transcoder_init(); - - enum debug_flags_t - { - cDebugFlagVisCRs = 1, - cDebugFlagVisBC1Sels = 2, - cDebugFlagVisBC1Endpoints = 4 - }; - uint32_t get_debug_flags(); - void set_debug_flags(uint32_t f); - - // ------------------------------------------------------------------------------------------------------ - // Optional .KTX2 file format support - // KTX2 reading optionally requires miniz or Zstd decompressors for supercompressed UASTC files. - // ------------------------------------------------------------------------------------------------------ -#if BASISD_SUPPORT_KTX2 -#pragma pack(push) -#pragma pack(1) - struct ktx2_header - { - uint8_t m_identifier[12]; - basisu::packed_uint<4> m_vk_format; - basisu::packed_uint<4> m_type_size; - basisu::packed_uint<4> m_pixel_width; - basisu::packed_uint<4> m_pixel_height; - basisu::packed_uint<4> m_pixel_depth; - basisu::packed_uint<4> m_layer_count; - basisu::packed_uint<4> m_face_count; - basisu::packed_uint<4> m_level_count; - basisu::packed_uint<4> m_supercompression_scheme; - basisu::packed_uint<4> m_dfd_byte_offset; - basisu::packed_uint<4> m_dfd_byte_length; - basisu::packed_uint<4> m_kvd_byte_offset; - basisu::packed_uint<4> m_kvd_byte_length; - basisu::packed_uint<8> m_sgd_byte_offset; - basisu::packed_uint<8> m_sgd_byte_length; - }; - - struct ktx2_level_index - { - basisu::packed_uint<8> m_byte_offset; - basisu::packed_uint<8> m_byte_length; - basisu::packed_uint<8> m_uncompressed_byte_length; - }; - - struct ktx2_etc1s_global_data_header - { - basisu::packed_uint<2> m_endpoint_count; - basisu::packed_uint<2> m_selector_count; - basisu::packed_uint<4> m_endpoints_byte_length; - basisu::packed_uint<4> m_selectors_byte_length; - basisu::packed_uint<4> m_tables_byte_length; - basisu::packed_uint<4> m_extended_byte_length; - }; - - struct ktx2_etc1s_image_desc - { - basisu::packed_uint<4> m_image_flags; - basisu::packed_uint<4> m_rgb_slice_byte_offset; - basisu::packed_uint<4> m_rgb_slice_byte_length; - basisu::packed_uint<4> m_alpha_slice_byte_offset; - basisu::packed_uint<4> m_alpha_slice_byte_length; - }; - - struct ktx2_animdata - { - basisu::packed_uint<4> m_duration; - basisu::packed_uint<4> m_timescale; - basisu::packed_uint<4> m_loopcount; - }; -#pragma pack(pop) - - const uint32_t KTX2_VK_FORMAT_UNDEFINED = 0; - const uint32_t KTX2_KDF_DF_MODEL_UASTC = 166; - const uint32_t KTX2_KDF_DF_MODEL_ETC1S = 163; - const uint32_t KTX2_IMAGE_IS_P_FRAME = 2; - const uint32_t KTX2_UASTC_BLOCK_SIZE = 16; - const uint32_t KTX2_MAX_SUPPORTED_LEVEL_COUNT = 16; // this is an implementation specific constraint and can be increased - - // The KTX2 transfer functions supported by KTX2 - const uint32_t KTX2_KHR_DF_TRANSFER_LINEAR = 1; - const uint32_t KTX2_KHR_DF_TRANSFER_SRGB = 2; - - enum ktx2_supercompression - { - KTX2_SS_NONE = 0, - KTX2_SS_BASISLZ = 1, - KTX2_SS_ZSTANDARD = 2 - }; - - extern const uint8_t g_ktx2_file_identifier[12]; - - enum ktx2_df_channel_id - { - KTX2_DF_CHANNEL_ETC1S_RGB = 0U, - KTX2_DF_CHANNEL_ETC1S_RRR = 3U, - KTX2_DF_CHANNEL_ETC1S_GGG = 4U, - KTX2_DF_CHANNEL_ETC1S_AAA = 15U, - - KTX2_DF_CHANNEL_UASTC_DATA = 0U, - KTX2_DF_CHANNEL_UASTC_RGB = 0U, - KTX2_DF_CHANNEL_UASTC_RGBA = 3U, - KTX2_DF_CHANNEL_UASTC_RRR = 4U, - KTX2_DF_CHANNEL_UASTC_RRRG = 5U, - KTX2_DF_CHANNEL_UASTC_RG = 6U, - }; - - inline const char* ktx2_get_etc1s_df_channel_id_str(ktx2_df_channel_id id) - { - switch (id) - { - case KTX2_DF_CHANNEL_ETC1S_RGB: return "RGB"; - case KTX2_DF_CHANNEL_ETC1S_RRR: return "RRR"; - case KTX2_DF_CHANNEL_ETC1S_GGG: return "GGG"; - case KTX2_DF_CHANNEL_ETC1S_AAA: return "AAA"; - default: break; - } - return "?"; - } - - inline const char* ktx2_get_uastc_df_channel_id_str(ktx2_df_channel_id id) - { - switch (id) - { - case KTX2_DF_CHANNEL_UASTC_RGB: return "RGB"; - case KTX2_DF_CHANNEL_UASTC_RGBA: return "RGBA"; - case KTX2_DF_CHANNEL_UASTC_RRR: return "RRR"; - case KTX2_DF_CHANNEL_UASTC_RRRG: return "RRRG"; - case KTX2_DF_CHANNEL_UASTC_RG: return "RG"; - default: break; - } - return "?"; - } - - enum ktx2_df_color_primaries - { - KTX2_DF_PRIMARIES_UNSPECIFIED = 0, - KTX2_DF_PRIMARIES_BT709 = 1, - KTX2_DF_PRIMARIES_SRGB = 1, - KTX2_DF_PRIMARIES_BT601_EBU = 2, - KTX2_DF_PRIMARIES_BT601_SMPTE = 3, - KTX2_DF_PRIMARIES_BT2020 = 4, - KTX2_DF_PRIMARIES_CIEXYZ = 5, - KTX2_DF_PRIMARIES_ACES = 6, - KTX2_DF_PRIMARIES_ACESCC = 7, - KTX2_DF_PRIMARIES_NTSC1953 = 8, - KTX2_DF_PRIMARIES_PAL525 = 9, - KTX2_DF_PRIMARIES_DISPLAYP3 = 10, - KTX2_DF_PRIMARIES_ADOBERGB = 11 - }; - - inline const char* ktx2_get_df_color_primaries_str(ktx2_df_color_primaries p) - { - switch (p) - { - case KTX2_DF_PRIMARIES_UNSPECIFIED: return "UNSPECIFIED"; - case KTX2_DF_PRIMARIES_BT709: return "BT709"; - case KTX2_DF_PRIMARIES_BT601_EBU: return "EBU"; - case KTX2_DF_PRIMARIES_BT601_SMPTE: return "SMPTE"; - case KTX2_DF_PRIMARIES_BT2020: return "BT2020"; - case KTX2_DF_PRIMARIES_CIEXYZ: return "CIEXYZ"; - case KTX2_DF_PRIMARIES_ACES: return "ACES"; - case KTX2_DF_PRIMARIES_ACESCC: return "ACESCC"; - case KTX2_DF_PRIMARIES_NTSC1953: return "NTSC1953"; - case KTX2_DF_PRIMARIES_PAL525: return "PAL525"; - case KTX2_DF_PRIMARIES_DISPLAYP3: return "DISPLAYP3"; - case KTX2_DF_PRIMARIES_ADOBERGB: return "ADOBERGB"; - default: break; - } - return "?"; - } - - // Information about a single 2D texture "image" in a KTX2 file. - struct ktx2_image_level_info - { - // The mipmap level index (0=largest), texture array layer index, and cubemap face index of the image. - uint32_t m_level_index; - uint32_t m_layer_index; - uint32_t m_face_index; - - // The image's actual (or the original source image's) width/height in pixels, which may not be divisible by 4 pixels. - uint32_t m_orig_width; - uint32_t m_orig_height; - - // The image's physical width/height, which will always be divisible by 4 pixels. - uint32_t m_width; - uint32_t m_height; - - // The texture's dimensions in 4x4 texel blocks. - uint32_t m_num_blocks_x; - uint32_t m_num_blocks_y; - - // The total number of blocks - uint32_t m_total_blocks; - - // true if the image has alpha data - bool m_alpha_flag; - - // true if the image is an I-Frame. Currently, for ETC1S textures, the first frame will always be an I-Frame, and subsequent frames will always be P-Frames. - bool m_iframe_flag; - }; - - // Thread-specific ETC1S/supercompressed UASTC transcoder state. (If you're not doing multithreading transcoding you can ignore this.) - struct ktx2_transcoder_state - { - basist::basisu_transcoder_state m_transcoder_state; - basisu::uint8_vec m_level_uncomp_data; - int m_uncomp_data_level_index; - - void clear() - { - m_transcoder_state.clear(); - m_level_uncomp_data.clear(); - m_uncomp_data_level_index = -1; - } - }; - - // This class is quite similar to basisu_transcoder. It treats KTX2 files as a simple container for ETC1S/UASTC texture data. - // It does not support 1D or 3D textures. - // It only supports 2D and cubemap textures, with or without mipmaps, texture arrays of 2D/cubemap textures, and texture video files. - // It only supports raw non-supercompressed UASTC, ETC1S, UASTC+Zstd, or UASTC+zlib compressed files. - // DFD (Data Format Descriptor) parsing is purposely as simple as possible. - // If you need to know how to interpret the texture channels you'll need to parse the DFD yourself after calling get_dfd(). - class ktx2_transcoder - { - public: - ktx2_transcoder(); - - // Frees all allocations, resets object. - void clear(); - - // init() parses the KTX2 header, level index array, DFD, and key values, but nothing else. - // Importantly, it does not parse or decompress the ETC1S global supercompressed data, so some things (like which frames are I/P-Frames) won't be available until start_transcoding() is called. - // This method holds a pointer to the file data until clear() is called. - bool init(const void* pData, uint32_t data_size); - - // Returns the data/size passed to init(). - const uint8_t* get_data() const { return m_pData; } - uint32_t get_data_size() const { return m_data_size; } - - // Returns the KTX2 header. Valid after init(). - const ktx2_header& get_header() const { return m_header; } - - // Returns the KTX2 level index array. There will be one entry for each mipmap level. Valid after init(). - const basisu::vector& get_level_index() const { return m_levels; } - - // Returns the texture's width in texels. Always non-zero, might not be divisible by 4. Valid after init(). - uint32_t get_width() const { return m_header.m_pixel_width; } - - // Returns the texture's height in texels. Always non-zero, might not be divisible by 4. Valid after init(). - uint32_t get_height() const { return m_header.m_pixel_height; } - - // Returns the texture's number of mipmap levels. Always returns 1 or higher. Valid after init(). - uint32_t get_levels() const { return m_header.m_level_count; } - - // Returns the number of faces. Returns 1 for 2D textures and or 6 for cubemaps. Valid after init(). - uint32_t get_faces() const { return m_header.m_face_count; } - - // Returns 0 or the number of layers in the texture array or texture video. Valid after init(). - uint32_t get_layers() const { return m_header.m_layer_count; } - - // Returns cETC1S or cUASTC4x4. Valid after init(). - basist::basis_tex_format get_format() const { return m_format; } - - bool is_etc1s() const { return get_format() == basist::basis_tex_format::cETC1S; } - - bool is_uastc() const { return get_format() == basist::basis_tex_format::cUASTC4x4; } - - // Returns true if the ETC1S file has two planes (typically RGBA, or RRRG), or true if the UASTC file has alpha data. Valid after init(). - uint32_t get_has_alpha() const { return m_has_alpha; } - - // Returns the entire Data Format Descriptor (DFD) from the KTX2 file. Valid after init(). - // See https://www.khronos.org/registry/DataFormat/specs/1.3/dataformat.1.3.html#_the_khronos_data_format_descriptor_overview - const basisu::uint8_vec& get_dfd() const { return m_dfd; } - - // Some basic DFD accessors. Valid after init(). - uint32_t get_dfd_color_model() const { return m_dfd_color_model; } - - // Returns the DFD color primary. - // We do not validate the color primaries, so the returned value may not be in the ktx2_df_color_primaries enum. - ktx2_df_color_primaries get_dfd_color_primaries() const { return m_dfd_color_prims; } - - // Returns KTX2_KHR_DF_TRANSFER_LINEAR or KTX2_KHR_DF_TRANSFER_SRGB. - uint32_t get_dfd_transfer_func() const { return m_dfd_transfer_func; } - - uint32_t get_dfd_flags() const { return m_dfd_flags; } - - // Returns 1 (ETC1S/UASTC) or 2 (ETC1S with an internal alpha channel). - uint32_t get_dfd_total_samples() const { return m_dfd_samples; } - - // Returns the channel mapping for each DFD "sample". UASTC always has 1 sample, ETC1S can have one or two. - // Note the returned value SHOULD be one of the ktx2_df_channel_id enums, but we don't validate that. - // It's up to the caller to decide what to do if the value isn't in the enum. - ktx2_df_channel_id get_dfd_channel_id0() const { return m_dfd_chan0; } - ktx2_df_channel_id get_dfd_channel_id1() const { return m_dfd_chan1; } - - // Key value field data. - struct key_value - { - // The key field is UTF8 and always zero terminated. - basisu::uint8_vec m_key; - - // The value may be empty. It consists of raw bytes which may or may not be zero terminated. - basisu::uint8_vec m_value; - - bool operator< (const key_value& rhs) const { return strcmp((const char*)m_key.data(), (const char *)rhs.m_key.data()) < 0; } - }; - typedef basisu::vector key_value_vec; - - // Returns the array of key-value entries. This may be empty. Valid after init(). - // The order of key values fields in this array exactly matches the order they were stored in the file. The keys are supposed to be sorted by their Unicode code points. - const key_value_vec& get_key_values() const { return m_key_values; } - - const basisu::uint8_vec *find_key(const std::string& key_name) const; - - // Low-level ETC1S specific accessors - - // Returns the ETC1S global supercompression data header, which is only valid after start_transcoding() is called. - const ktx2_etc1s_global_data_header& get_etc1s_header() const { return m_etc1s_header; } - - // Returns the array of ETC1S image descriptors, which is only valid after get_etc1s_image_descs() is called. - const basisu::vector& get_etc1s_image_descs() const { return m_etc1s_image_descs; } - - // Must have called startTranscoding() first - uint32_t get_etc1s_image_descs_image_flags(uint32_t level_index, uint32_t layer_index, uint32_t face_index) const; - - // is_video() is only valid after start_transcoding() is called. - // For ETC1S data, if this returns true you must currently transcode the file from first to last frame, in order, without skipping any frames. - bool is_video() const { return m_is_video; } - - // start_transcoding() MUST be called before calling transcode_image(). - // This method decompresses the ETC1S global endpoint/selector codebooks, which is not free, so try to avoid calling it excessively. - bool start_transcoding(); - - // get_image_level_info() be called after init(), but the m_iframe_flag's won't be valid until start_transcoding() is called. - // You can call this method before calling transcode_image_level() to retrieve basic information about the mipmap level's dimensions, etc. - bool get_image_level_info(ktx2_image_level_info& level_info, uint32_t level_index, uint32_t layer_index, uint32_t face_index) const; - - // transcode_image_level() transcodes a single 2D texture or cubemap face from the KTX2 file. - // Internally it uses the same low-level transcode API's as basisu_transcoder::transcode_image_level(). - // If the file is UASTC and is supercompressed with Zstandard, and the file is a texture array or cubemap, it's highly recommended that each mipmap level is - // completely transcoded before switching to another level. Every time the mipmap level is changed all supercompressed level data must be decompressed using Zstandard as a single unit. - // Currently ETC1S videos must always be transcoded from first to last frame (or KTX2 "layer"), in order, with no skipping of frames. - // By default this method is not thread safe unless you specify a pointer to a user allocated thread-specific transcoder_state struct. - bool transcode_image_level( - uint32_t level_index, uint32_t layer_index, uint32_t face_index, - void* pOutput_blocks, uint32_t output_blocks_buf_size_in_blocks_or_pixels, - basist::transcoder_texture_format fmt, - uint32_t decode_flags = 0, uint32_t output_row_pitch_in_blocks_or_pixels = 0, uint32_t output_rows_in_pixels = 0, int channel0 = -1, int channel1 = -1, - ktx2_transcoder_state *pState = nullptr); - - private: - const uint8_t* m_pData; - uint32_t m_data_size; - - ktx2_header m_header; - basisu::vector m_levels; - basisu::uint8_vec m_dfd; - key_value_vec m_key_values; - - ktx2_etc1s_global_data_header m_etc1s_header; - basisu::vector m_etc1s_image_descs; - - basist::basis_tex_format m_format; - - uint32_t m_dfd_color_model; - ktx2_df_color_primaries m_dfd_color_prims; - uint32_t m_dfd_transfer_func; - uint32_t m_dfd_flags; - uint32_t m_dfd_samples; - ktx2_df_channel_id m_dfd_chan0, m_dfd_chan1; - - basist::basisu_lowlevel_etc1s_transcoder m_etc1s_transcoder; - basist::basisu_lowlevel_uastc_transcoder m_uastc_transcoder; - - ktx2_transcoder_state m_def_transcoder_state; - - bool m_has_alpha; - bool m_is_video; - - bool decompress_level_data(uint32_t level_index, basisu::uint8_vec& uncomp_data); - bool decompress_etc1s_global_data(); - bool read_key_values(); - }; - -#endif // BASISD_SUPPORT_KTX2 - - // Returns true if the transcoder was compiled with KTX2 support. - bool basisu_transcoder_supports_ktx2(); - - // Returns true if the transcoder was compiled with Zstandard support. - bool basisu_transcoder_supports_ktx2_zstd(); - -} // namespace basisu - diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_internal.h b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_internal.h deleted file mode 100644 index aa3bee351..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_internal.h +++ /dev/null @@ -1,796 +0,0 @@ -// basisu_transcoder_internal.h - Universal texture format transcoder library. -// Copyright (C) 2019-2021 Binomial LLC. All Rights Reserved. -// -// Important: If compiling with gcc, be sure strict aliasing is disabled: -fno-strict-aliasing -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#pragma once - -#ifdef _MSC_VER -#pragma warning (disable: 4127) // conditional expression is constant -#endif - -#define BASISD_LIB_VERSION 116 -#define BASISD_VERSION_STRING "01.16" - -#ifdef _DEBUG -#define BASISD_BUILD_DEBUG -#else -#define BASISD_BUILD_RELEASE -#endif - -#include "basisu.h" - -#define BASISD_znew (z = 36969 * (z & 65535) + (z >> 16)) - -namespace basisu -{ - extern bool g_debug_printf; -} - -namespace basist -{ - // Low-level formats directly supported by the transcoder (other supported texture formats are combinations of these low-level block formats). - // You probably don't care about these enum's unless you are going pretty low-level and calling the transcoder to decode individual slices. - enum class block_format - { - cETC1, // ETC1S RGB - cETC2_RGBA, // full ETC2 EAC RGBA8 block - cBC1, // DXT1 RGB - cBC3, // BC4 block followed by a four color BC1 block - cBC4, // DXT5A (alpha block only) - cBC5, // two BC4 blocks - cPVRTC1_4_RGB, // opaque-only PVRTC1 4bpp - cPVRTC1_4_RGBA, // PVRTC1 4bpp RGBA - cBC7, // Full BC7 block, any mode - cBC7_M5_COLOR, // RGB BC7 mode 5 color (writes an opaque mode 5 block) - cBC7_M5_ALPHA, // alpha portion of BC7 mode 5 (cBC7_M5_COLOR output data must have been written to the output buffer first to set the mode/rot fields etc.) - cETC2_EAC_A8, // alpha block of ETC2 EAC (first 8 bytes of the 16-bit ETC2 EAC RGBA format) - cASTC_4x4, // ASTC 4x4 (either color-only or color+alpha). Note that the transcoder always currently assumes sRGB is not enabled when outputting ASTC - // data. If you use a sRGB ASTC format you'll get ~1 LSB of additional error, because of the different way ASTC decoders scale 8-bit endpoints to 16-bits during unpacking. - - cATC_RGB, - cATC_RGBA_INTERPOLATED_ALPHA, - cFXT1_RGB, // Opaque-only, has oddball 8x4 pixel block size - - cPVRTC2_4_RGB, - cPVRTC2_4_RGBA, - - cETC2_EAC_R11, - cETC2_EAC_RG11, - - cIndices, // Used internally: Write 16-bit endpoint and selector indices directly to output (output block must be at least 32-bits) - - cRGB32, // Writes RGB components to 32bpp output pixels - cRGBA32, // Writes RGB255 components to 32bpp output pixels - cA32, // Writes alpha component to 32bpp output pixels - - cRGB565, - cBGR565, - - cRGBA4444_COLOR, - cRGBA4444_ALPHA, - cRGBA4444_COLOR_OPAQUE, - cRGBA4444, - - cUASTC_4x4, - - cTotalBlockFormats - }; - - const int COLOR5_PAL0_PREV_HI = 9, COLOR5_PAL0_DELTA_LO = -9, COLOR5_PAL0_DELTA_HI = 31; - const int COLOR5_PAL1_PREV_HI = 21, COLOR5_PAL1_DELTA_LO = -21, COLOR5_PAL1_DELTA_HI = 21; - const int COLOR5_PAL2_PREV_HI = 31, COLOR5_PAL2_DELTA_LO = -31, COLOR5_PAL2_DELTA_HI = 9; - const int COLOR5_PAL_MIN_DELTA_B_RUNLEN = 3, COLOR5_PAL_DELTA_5_RUNLEN_VLC_BITS = 3; - - const uint32_t ENDPOINT_PRED_TOTAL_SYMBOLS = (4 * 4 * 4 * 4) + 1; - const uint32_t ENDPOINT_PRED_REPEAT_LAST_SYMBOL = ENDPOINT_PRED_TOTAL_SYMBOLS - 1; - const uint32_t ENDPOINT_PRED_MIN_REPEAT_COUNT = 3; - const uint32_t ENDPOINT_PRED_COUNT_VLC_BITS = 4; - - const uint32_t NUM_ENDPOINT_PREDS = 3;// BASISU_ARRAY_SIZE(g_endpoint_preds); - const uint32_t CR_ENDPOINT_PRED_INDEX = NUM_ENDPOINT_PREDS - 1; - const uint32_t NO_ENDPOINT_PRED_INDEX = 3;//NUM_ENDPOINT_PREDS; - const uint32_t MAX_SELECTOR_HISTORY_BUF_SIZE = 64; - const uint32_t SELECTOR_HISTORY_BUF_RLE_COUNT_THRESH = 3; - const uint32_t SELECTOR_HISTORY_BUF_RLE_COUNT_BITS = 6; - const uint32_t SELECTOR_HISTORY_BUF_RLE_COUNT_TOTAL = (1 << SELECTOR_HISTORY_BUF_RLE_COUNT_BITS); - - uint16_t crc16(const void *r, size_t size, uint16_t crc); - - class huffman_decoding_table - { - friend class bitwise_decoder; - - public: - huffman_decoding_table() - { - } - - void clear() - { - basisu::clear_vector(m_code_sizes); - basisu::clear_vector(m_lookup); - basisu::clear_vector(m_tree); - } - - bool init(uint32_t total_syms, const uint8_t *pCode_sizes, uint32_t fast_lookup_bits = basisu::cHuffmanFastLookupBits) - { - if (!total_syms) - { - clear(); - return true; - } - - m_code_sizes.resize(total_syms); - memcpy(&m_code_sizes[0], pCode_sizes, total_syms); - - const uint32_t huffman_fast_lookup_size = 1 << fast_lookup_bits; - - m_lookup.resize(0); - m_lookup.resize(huffman_fast_lookup_size); - - m_tree.resize(0); - m_tree.resize(total_syms * 2); - - uint32_t syms_using_codesize[basisu::cHuffmanMaxSupportedInternalCodeSize + 1]; - basisu::clear_obj(syms_using_codesize); - for (uint32_t i = 0; i < total_syms; i++) - { - if (pCode_sizes[i] > basisu::cHuffmanMaxSupportedInternalCodeSize) - return false; - syms_using_codesize[pCode_sizes[i]]++; - } - - uint32_t next_code[basisu::cHuffmanMaxSupportedInternalCodeSize + 1]; - next_code[0] = next_code[1] = 0; - - uint32_t used_syms = 0, total = 0; - for (uint32_t i = 1; i < basisu::cHuffmanMaxSupportedInternalCodeSize; i++) - { - used_syms += syms_using_codesize[i]; - next_code[i + 1] = (total = ((total + syms_using_codesize[i]) << 1)); - } - - if (((1U << basisu::cHuffmanMaxSupportedInternalCodeSize) != total) && (used_syms != 1U)) - return false; - - for (int tree_next = -1, sym_index = 0; sym_index < (int)total_syms; ++sym_index) - { - uint32_t rev_code = 0, l, cur_code, code_size = pCode_sizes[sym_index]; - if (!code_size) - continue; - - cur_code = next_code[code_size]++; - - for (l = code_size; l > 0; l--, cur_code >>= 1) - rev_code = (rev_code << 1) | (cur_code & 1); - - if (code_size <= fast_lookup_bits) - { - uint32_t k = (code_size << 16) | sym_index; - while (rev_code < huffman_fast_lookup_size) - { - if (m_lookup[rev_code] != 0) - { - // Supplied codesizes can't create a valid prefix code. - return false; - } - - m_lookup[rev_code] = k; - rev_code += (1 << code_size); - } - continue; - } - - int tree_cur; - if (0 == (tree_cur = m_lookup[rev_code & (huffman_fast_lookup_size - 1)])) - { - const uint32_t idx = rev_code & (huffman_fast_lookup_size - 1); - if (m_lookup[idx] != 0) - { - // Supplied codesizes can't create a valid prefix code. - return false; - } - - m_lookup[idx] = tree_next; - tree_cur = tree_next; - tree_next -= 2; - } - - if (tree_cur >= 0) - { - // Supplied codesizes can't create a valid prefix code. - return false; - } - - rev_code >>= (fast_lookup_bits - 1); - - for (int j = code_size; j > ((int)fast_lookup_bits + 1); j--) - { - tree_cur -= ((rev_code >>= 1) & 1); - - const int idx = -tree_cur - 1; - if (idx < 0) - return false; - else if (idx >= (int)m_tree.size()) - m_tree.resize(idx + 1); - - if (!m_tree[idx]) - { - m_tree[idx] = (int16_t)tree_next; - tree_cur = tree_next; - tree_next -= 2; - } - else - { - tree_cur = m_tree[idx]; - if (tree_cur >= 0) - { - // Supplied codesizes can't create a valid prefix code. - return false; - } - } - } - - tree_cur -= ((rev_code >>= 1) & 1); - - const int idx = -tree_cur - 1; - if (idx < 0) - return false; - else if (idx >= (int)m_tree.size()) - m_tree.resize(idx + 1); - - if (m_tree[idx] != 0) - { - // Supplied codesizes can't create a valid prefix code. - return false; - } - - m_tree[idx] = (int16_t)sym_index; - } - - return true; - } - - const basisu::uint8_vec &get_code_sizes() const { return m_code_sizes; } - const basisu::int_vec &get_lookup() const { return m_lookup; } - const basisu::int16_vec &get_tree() const { return m_tree; } - - bool is_valid() const { return m_code_sizes.size() > 0; } - - private: - basisu::uint8_vec m_code_sizes; - basisu::int_vec m_lookup; - basisu::int16_vec m_tree; - }; - - class bitwise_decoder - { - public: - bitwise_decoder() : - m_buf_size(0), - m_pBuf(nullptr), - m_pBuf_start(nullptr), - m_pBuf_end(nullptr), - m_bit_buf(0), - m_bit_buf_size(0) - { - } - - void clear() - { - m_buf_size = 0; - m_pBuf = nullptr; - m_pBuf_start = nullptr; - m_pBuf_end = nullptr; - m_bit_buf = 0; - m_bit_buf_size = 0; - } - - bool init(const uint8_t *pBuf, uint32_t buf_size) - { - if ((!pBuf) && (buf_size)) - return false; - - m_buf_size = buf_size; - m_pBuf = pBuf; - m_pBuf_start = pBuf; - m_pBuf_end = pBuf + buf_size; - m_bit_buf = 0; - m_bit_buf_size = 0; - return true; - } - - void stop() - { - } - - inline uint32_t peek_bits(uint32_t num_bits) - { - if (!num_bits) - return 0; - - assert(num_bits <= 25); - - while (m_bit_buf_size < num_bits) - { - uint32_t c = 0; - if (m_pBuf < m_pBuf_end) - c = *m_pBuf++; - - m_bit_buf |= (c << m_bit_buf_size); - m_bit_buf_size += 8; - assert(m_bit_buf_size <= 32); - } - - return m_bit_buf & ((1 << num_bits) - 1); - } - - void remove_bits(uint32_t num_bits) - { - assert(m_bit_buf_size >= num_bits); - - m_bit_buf >>= num_bits; - m_bit_buf_size -= num_bits; - } - - uint32_t get_bits(uint32_t num_bits) - { - if (num_bits > 25) - { - assert(num_bits <= 32); - - const uint32_t bits0 = peek_bits(25); - m_bit_buf >>= 25; - m_bit_buf_size -= 25; - num_bits -= 25; - - const uint32_t bits = peek_bits(num_bits); - m_bit_buf >>= num_bits; - m_bit_buf_size -= num_bits; - - return bits0 | (bits << 25); - } - - const uint32_t bits = peek_bits(num_bits); - - m_bit_buf >>= num_bits; - m_bit_buf_size -= num_bits; - - return bits; - } - - uint32_t decode_truncated_binary(uint32_t n) - { - assert(n >= 2); - - const uint32_t k = basisu::floor_log2i(n); - const uint32_t u = (1 << (k + 1)) - n; - - uint32_t result = get_bits(k); - - if (result >= u) - result = ((result << 1) | get_bits(1)) - u; - - return result; - } - - uint32_t decode_rice(uint32_t m) - { - assert(m); - - uint32_t q = 0; - for (;;) - { - uint32_t k = peek_bits(16); - - uint32_t l = 0; - while (k & 1) - { - l++; - k >>= 1; - } - - q += l; - - remove_bits(l); - - if (l < 16) - break; - } - - return (q << m) + (get_bits(m + 1) >> 1); - } - - inline uint32_t decode_vlc(uint32_t chunk_bits) - { - assert(chunk_bits); - - const uint32_t chunk_size = 1 << chunk_bits; - const uint32_t chunk_mask = chunk_size - 1; - - uint32_t v = 0; - uint32_t ofs = 0; - - for ( ; ; ) - { - uint32_t s = get_bits(chunk_bits + 1); - v |= ((s & chunk_mask) << ofs); - ofs += chunk_bits; - - if ((s & chunk_size) == 0) - break; - - if (ofs >= 32) - { - assert(0); - break; - } - } - - return v; - } - - inline uint32_t decode_huffman(const huffman_decoding_table &ct, int fast_lookup_bits = basisu::cHuffmanFastLookupBits) - { - assert(ct.m_code_sizes.size()); - - const uint32_t huffman_fast_lookup_size = 1 << fast_lookup_bits; - - while (m_bit_buf_size < 16) - { - uint32_t c = 0; - if (m_pBuf < m_pBuf_end) - c = *m_pBuf++; - - m_bit_buf |= (c << m_bit_buf_size); - m_bit_buf_size += 8; - assert(m_bit_buf_size <= 32); - } - - int code_len; - - int sym; - if ((sym = ct.m_lookup[m_bit_buf & (huffman_fast_lookup_size - 1)]) >= 0) - { - code_len = sym >> 16; - sym &= 0xFFFF; - } - else - { - code_len = fast_lookup_bits; - do - { - sym = ct.m_tree[~sym + ((m_bit_buf >> code_len++) & 1)]; // ~sym = -sym - 1 - } while (sym < 0); - } - - m_bit_buf >>= code_len; - m_bit_buf_size -= code_len; - - return sym; - } - - bool read_huffman_table(huffman_decoding_table &ct) - { - ct.clear(); - - const uint32_t total_used_syms = get_bits(basisu::cHuffmanMaxSymsLog2); - - if (!total_used_syms) - return true; - if (total_used_syms > basisu::cHuffmanMaxSyms) - return false; - - uint8_t code_length_code_sizes[basisu::cHuffmanTotalCodelengthCodes]; - basisu::clear_obj(code_length_code_sizes); - - const uint32_t num_codelength_codes = get_bits(5); - if ((num_codelength_codes < 1) || (num_codelength_codes > basisu::cHuffmanTotalCodelengthCodes)) - return false; - - for (uint32_t i = 0; i < num_codelength_codes; i++) - code_length_code_sizes[basisu::g_huffman_sorted_codelength_codes[i]] = static_cast(get_bits(3)); - - huffman_decoding_table code_length_table; - if (!code_length_table.init(basisu::cHuffmanTotalCodelengthCodes, code_length_code_sizes)) - return false; - - if (!code_length_table.is_valid()) - return false; - - basisu::uint8_vec code_sizes(total_used_syms); - - uint32_t cur = 0; - while (cur < total_used_syms) - { - int c = decode_huffman(code_length_table); - - if (c <= 16) - code_sizes[cur++] = static_cast(c); - else if (c == basisu::cHuffmanSmallZeroRunCode) - cur += get_bits(basisu::cHuffmanSmallZeroRunExtraBits) + basisu::cHuffmanSmallZeroRunSizeMin; - else if (c == basisu::cHuffmanBigZeroRunCode) - cur += get_bits(basisu::cHuffmanBigZeroRunExtraBits) + basisu::cHuffmanBigZeroRunSizeMin; - else - { - if (!cur) - return false; - - uint32_t l; - if (c == basisu::cHuffmanSmallRepeatCode) - l = get_bits(basisu::cHuffmanSmallRepeatExtraBits) + basisu::cHuffmanSmallRepeatSizeMin; - else - l = get_bits(basisu::cHuffmanBigRepeatExtraBits) + basisu::cHuffmanBigRepeatSizeMin; - - const uint8_t prev = code_sizes[cur - 1]; - if (prev == 0) - return false; - do - { - if (cur >= total_used_syms) - return false; - code_sizes[cur++] = prev; - } while (--l > 0); - } - } - - if (cur != total_used_syms) - return false; - - return ct.init(total_used_syms, &code_sizes[0]); - } - - private: - uint32_t m_buf_size; - const uint8_t *m_pBuf; - const uint8_t *m_pBuf_start; - const uint8_t *m_pBuf_end; - - uint32_t m_bit_buf; - uint32_t m_bit_buf_size; - }; - - inline uint32_t basisd_rand(uint32_t seed) - { - if (!seed) - seed++; - uint32_t z = seed; - BASISD_znew; - return z; - } - - // Returns random number in [0,limit). Max limit is 0xFFFF. - inline uint32_t basisd_urand(uint32_t& seed, uint32_t limit) - { - seed = basisd_rand(seed); - return (((seed ^ (seed >> 16)) & 0xFFFF) * limit) >> 16; - } - - class approx_move_to_front - { - public: - approx_move_to_front(uint32_t n) - { - init(n); - } - - void init(uint32_t n) - { - m_values.resize(n); - m_rover = n / 2; - } - - const basisu::int_vec& get_values() const { return m_values; } - basisu::int_vec& get_values() { return m_values; } - - uint32_t size() const { return (uint32_t)m_values.size(); } - - const int& operator[] (uint32_t index) const { return m_values[index]; } - int operator[] (uint32_t index) { return m_values[index]; } - - void add(int new_value) - { - m_values[m_rover++] = new_value; - if (m_rover == m_values.size()) - m_rover = (uint32_t)m_values.size() / 2; - } - - void use(uint32_t index) - { - if (index) - { - //std::swap(m_values[index / 2], m_values[index]); - int x = m_values[index / 2]; - int y = m_values[index]; - m_values[index / 2] = y; - m_values[index] = x; - } - } - - // returns -1 if not found - int find(int value) const - { - for (uint32_t i = 0; i < m_values.size(); i++) - if (m_values[i] == value) - return i; - return -1; - } - - void reset() - { - const uint32_t n = (uint32_t)m_values.size(); - - m_values.clear(); - - init(n); - } - - private: - basisu::int_vec m_values; - uint32_t m_rover; - }; - - struct decoder_etc_block; - - inline uint8_t clamp255(int32_t i) - { - return (uint8_t)((i & 0xFFFFFF00U) ? (~(i >> 31)) : i); - } - - enum eNoClamp - { - cNoClamp = 0 - }; - - struct color32 - { - union - { - struct - { - uint8_t r; - uint8_t g; - uint8_t b; - uint8_t a; - }; - - uint8_t c[4]; - - uint32_t m; - }; - - color32() { } - - color32(uint32_t vr, uint32_t vg, uint32_t vb, uint32_t va) { set(vr, vg, vb, va); } - color32(eNoClamp unused, uint32_t vr, uint32_t vg, uint32_t vb, uint32_t va) { (void)unused; set_noclamp_rgba(vr, vg, vb, va); } - - void set(uint32_t vr, uint32_t vg, uint32_t vb, uint32_t va) { c[0] = static_cast(vr); c[1] = static_cast(vg); c[2] = static_cast(vb); c[3] = static_cast(va); } - - void set_noclamp_rgb(uint32_t vr, uint32_t vg, uint32_t vb) { c[0] = static_cast(vr); c[1] = static_cast(vg); c[2] = static_cast(vb); } - void set_noclamp_rgba(uint32_t vr, uint32_t vg, uint32_t vb, uint32_t va) { set(vr, vg, vb, va); } - - void set_clamped(int vr, int vg, int vb, int va) { c[0] = clamp255(vr); c[1] = clamp255(vg); c[2] = clamp255(vb); c[3] = clamp255(va); } - - uint8_t operator[] (uint32_t idx) const { assert(idx < 4); return c[idx]; } - uint8_t &operator[] (uint32_t idx) { assert(idx < 4); return c[idx]; } - - bool operator== (const color32&rhs) const { return m == rhs.m; } - - static color32 comp_min(const color32& a, const color32& b) { return color32(cNoClamp, basisu::minimum(a[0], b[0]), basisu::minimum(a[1], b[1]), basisu::minimum(a[2], b[2]), basisu::minimum(a[3], b[3])); } - static color32 comp_max(const color32& a, const color32& b) { return color32(cNoClamp, basisu::maximum(a[0], b[0]), basisu::maximum(a[1], b[1]), basisu::maximum(a[2], b[2]), basisu::maximum(a[3], b[3])); } - }; - - struct endpoint - { - color32 m_color5; - uint8_t m_inten5; - bool operator== (const endpoint& rhs) const - { - return (m_color5.r == rhs.m_color5.r) && (m_color5.g == rhs.m_color5.g) && (m_color5.b == rhs.m_color5.b) && (m_inten5 == rhs.m_inten5); - } - bool operator!= (const endpoint& rhs) const { return !(*this == rhs); } - }; - - struct selector - { - // Plain selectors (2-bits per value) - uint8_t m_selectors[4]; - - // ETC1 selectors - uint8_t m_bytes[4]; - - uint8_t m_lo_selector, m_hi_selector; - uint8_t m_num_unique_selectors; - bool operator== (const selector& rhs) const - { - return (m_selectors[0] == rhs.m_selectors[0]) && - (m_selectors[1] == rhs.m_selectors[1]) && - (m_selectors[2] == rhs.m_selectors[2]) && - (m_selectors[3] == rhs.m_selectors[3]); - } - bool operator!= (const selector& rhs) const - { - return !(*this == rhs); - } - - void init_flags() - { - uint32_t hist[4] = { 0, 0, 0, 0 }; - for (uint32_t y = 0; y < 4; y++) - { - for (uint32_t x = 0; x < 4; x++) - { - uint32_t s = get_selector(x, y); - hist[s]++; - } - } - - m_lo_selector = 3; - m_hi_selector = 0; - m_num_unique_selectors = 0; - - for (uint32_t i = 0; i < 4; i++) - { - if (hist[i]) - { - m_num_unique_selectors++; - if (i < m_lo_selector) m_lo_selector = static_cast(i); - if (i > m_hi_selector) m_hi_selector = static_cast(i); - } - } - } - - // Returned selector value ranges from 0-3 and is a direct index into g_etc1_inten_tables. - inline uint32_t get_selector(uint32_t x, uint32_t y) const - { - assert((x < 4) && (y < 4)); - return (m_selectors[y] >> (x * 2)) & 3; - } - - void set_selector(uint32_t x, uint32_t y, uint32_t val) - { - static const uint8_t s_selector_index_to_etc1[4] = { 3, 2, 0, 1 }; - - assert((x | y | val) < 4); - - m_selectors[y] &= ~(3 << (x * 2)); - m_selectors[y] |= (val << (x * 2)); - - const uint32_t etc1_bit_index = x * 4 + y; - - uint8_t *p = &m_bytes[3 - (etc1_bit_index >> 3)]; - - const uint32_t byte_bit_ofs = etc1_bit_index & 7; - const uint32_t mask = 1 << byte_bit_ofs; - - const uint32_t etc1_val = s_selector_index_to_etc1[val]; - - const uint32_t lsb = etc1_val & 1; - const uint32_t msb = etc1_val >> 1; - - p[0] &= ~mask; - p[0] |= (lsb << byte_bit_ofs); - - p[-2] &= ~mask; - p[-2] |= (msb << byte_bit_ofs); - } - }; - - bool basis_block_format_is_uncompressed(block_format tex_type); - -} // namespace basist - - - diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_astc.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_astc.inc deleted file mode 100644 index cd634c0df..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_astc.inc +++ /dev/null @@ -1,481 +0,0 @@ -{0,2,18},{0,32,2},{0,16,10},{0,16,10},{0,32,35},{0,16,27},{0,16,11},{0,16,27},{0,16,36},{0,16,28},{0,2,18},{0,32,2},{0,16,10},{0,16,10},{16,0,35},{0,16,27},{0,16,11},{0,16,27},{32,0,35},{0,16,27},{0,16,1},{0,16,1},{0,16,1},{0,16,1},{0,16,2},{0,16,2},{0,16,2},{0,0,4},{0,0,4},{0,0,4},{0,16,1}, -{0,16,1},{0,16,1},{0,16,1},{0,16,2},{0,16,2},{0,16,2},{0,0,4},{16,0,2},{0,0,4},{0,2,18},{0,32,2},{0,16,10},{0,16,10},{0,2,18},{2,0,18},{0,16,10},{0,16,18},{2,0,18},{0,16,18},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{16,4,44},{16,18,27},{16,2,30}, -{16,2,30},{0,4,52},{0,18,20},{0,2,1},{0,32,27},{0,2,77},{0,32,36},{16,4,19},{16,18,2},{16,2,5},{16,2,5},{32,32,51},{0,18,20},{0,2,1},{0,32,27},{32,32,51},{0,32,27},{16,18,26},{16,18,26},{16,18,26},{16,32,27},{0,34,8},{0,2,1},{0,2,1},{0,32,2},{0,32,19},{0,32,11},{16,18,1},{16,18,1},{16,18,1},{16,32,2},{16,2,8}, -{0,2,1},{0,2,1},{0,32,2},{34,0,8},{0,32,2},{16,4,18},{16,18,1},{16,2,4},{0,2,0},{16,4,18},{4,16,18},{0,2,0},{0,32,26},{4,16,18},{0,32,26},{16,0,26},{16,0,26},{16,0,26},{16,0,26},{0,18,0},{0,18,0},{0,18,0},{0,32,1},{0,16,10},{0,16,10},{32,36,36},{32,4,20},{32,34,31},{32,18,28},{16,6,60},{32,34,31},{32,18,19}, -{16,18,28},{0,34,52},{0,18,22},{2,4,22},{2,34,6},{2,18,14},{2,18,14},{18,2,51},{32,34,22},{32,18,10},{0,18,18},{38,0,51},{0,18,18},{32,4,19},{32,4,19},{32,4,19},{32,18,19},{32,34,17},{32,18,10},{32,18,10},{32,2,13},{16,18,14},{16,2,8},{2,18,5},{2,18,5},{2,18,5},{2,18,5},{2,2,8},{32,18,1},{32,18,1},{32,2,4},{2,2,8}, -{32,2,4},{4,0,18},{32,4,2},{2,18,10},{0,34,9},{4,0,18},{8,0,18},{0,34,9},{0,18,18},{8,0,18},{0,18,18},{32,0,18},{32,0,18},{32,0,18},{32,0,18},{32,18,9},{32,18,9},{32,18,9},{32,2,9},{16,2,4},{16,2,4},{18,6,44},{18,20,26},{18,4,30},{18,4,30},{2,6,52},{2,20,21},{2,4,1},{2,34,27},{16,20,52},{32,34,27},{18,6,19}, -{18,20,1},{18,4,5},{18,4,5},{20,16,51},{2,20,21},{2,4,1},{2,34,27},{16,20,51},{2,34,27},{18,20,26},{18,20,26},{18,20,26},{18,34,27},{2,36,8},{2,4,1},{2,4,1},{2,34,2},{32,4,11},{32,34,2},{18,20,1},{18,20,1},{18,20,1},{18,34,2},{18,4,8},{2,4,1},{2,4,1},{2,34,2},{36,2,8},{2,34,2},{36,0,18},{18,20,0},{18,4,4}, -{2,4,0},{36,0,18},{6,18,18},{2,4,0},{0,34,26},{6,18,18},{0,34,26},{18,0,26},{18,0,26},{18,0,26},{18,0,26},{2,4,1},{2,4,1},{2,4,1},{2,34,1},{32,34,1},{32,34,1},{34,8,40},{34,6,21},{34,36,33},{34,36,28},{34,22,55},{34,36,25},{34,36,13},{34,20,31},{32,6,55},{18,20,20},{4,6,21},{4,36,5},{4,36,5},{4,20,11},{22,0,51}, -{34,36,21},{34,36,9},{2,20,19},{32,6,51},{2,20,19},{34,6,21},{34,6,21},{34,6,21},{34,20,21},{34,6,14},{34,20,6},{34,20,6},{34,4,14},{18,20,11},{18,20,11},{4,36,1},{4,36,1},{4,36,1},{4,20,2},{2,24,8},{34,20,2},{34,20,2},{4,4,10},{28,0,8},{4,4,10},{22,16,18},{34,6,1},{4,36,4},{18,36,4},{22,16,18},{44,16,18},{18,36,4}, -{0,20,18},{44,16,18},{0,20,18},{34,0,20},{34,0,20},{34,0,20},{34,0,20},{34,20,5},{34,20,5},{34,20,5},{34,4,5},{18,20,2},{18,20,2},{20,8,46},{20,22,27},{20,6,31},{20,6,28},{4,24,52},{4,22,19},{4,6,7},{4,6,36},{18,22,56},{34,6,31},{20,8,21},{20,22,2},{20,6,6},{20,6,3},{36,6,51},{4,22,18},{4,6,6},{18,6,26},{31,0,51}, -{18,6,26},{20,22,26},{20,22,26},{20,22,26},{20,6,27},{4,38,9},{4,6,6},{4,6,6},{4,36,1},{34,6,9},{4,36,4},{20,22,1},{20,22,1},{20,22,1},{20,6,2},{22,2,8},{20,36,4},{20,36,4},{4,36,0},{42,2,8},{4,36,0},{22,4,18},{20,22,1},{36,6,2},{4,6,2},{22,4,18},{15,0,18},{4,6,2},{0,6,26},{15,0,18},{0,6,26},{20,0,26}, -{20,0,26},{20,0,26},{20,0,26},{4,22,1},{4,22,1},{4,22,1},{4,36,1},{4,36,4},{4,36,4},{36,40,38},{36,8,22},{36,38,33},{36,38,28},{36,24,55},{36,38,25},{36,38,13},{20,22,28},{34,8,55},{4,22,23},{6,8,21},{6,38,5},{6,38,5},{6,22,11},{24,2,51},{36,38,21},{20,38,9},{4,22,19},{13,0,51},{4,22,19},{36,8,21},{36,8,21},{36,8,21}, -{36,22,21},{36,8,14},{36,22,6},{36,22,6},{36,6,14},{4,38,10},{4,22,14},{6,38,1},{6,38,1},{6,38,1},{6,22,2},{8,2,8},{36,22,2},{36,22,2},{6,6,10},{30,2,8},{6,6,10},{10,0,18},{36,8,2},{6,38,4},{4,38,5},{10,0,18},{4,8,18},{4,38,5},{0,22,18},{4,8,18},{0,22,18},{36,0,20},{36,0,20},{36,0,20},{36,0,20},{36,22,5}, -{36,22,5},{36,22,5},{36,6,5},{4,22,5},{4,22,5},{22,10,46},{22,24,26},{22,8,30},{22,8,30},{6,26,52},{6,24,21},{6,8,5},{6,38,37},{20,24,53},{6,38,40},{22,10,21},{22,24,1},{22,8,5},{22,8,5},{16,11,51},{6,24,20},{6,8,4},{6,38,36},{25,0,51},{6,38,36},{22,24,26},{22,24,26},{22,24,26},{22,8,30},{6,40,9},{6,8,5},{6,8,5}, -{6,38,1},{36,8,11},{6,38,4},{22,24,1},{22,24,1},{22,24,1},{22,8,5},{24,4,8},{6,8,4},{6,8,4},{6,38,0},{11,0,8},{6,38,0},{42,0,18},{22,24,0},{22,8,4},{6,8,0},{42,0,18},{9,0,18},{6,8,0},{0,8,36},{9,0,18},{0,8,36},{22,0,26},{22,0,26},{22,0,26},{22,0,26},{6,24,1},{6,24,1},{6,24,1},{6,38,1},{6,38,4}, -{6,38,4},{38,12,44},{38,10,30},{38,40,46},{38,40,34},{38,26,53},{38,40,21},{38,40,9},{38,24,25},{6,10,57},{22,24,22},{8,10,21},{8,40,5},{8,40,5},{8,24,17},{28,0,51},{38,40,20},{38,40,8},{6,24,21},{37,0,51},{6,24,21},{38,26,26},{38,26,26},{38,26,26},{38,24,30},{38,10,9},{38,40,5},{38,40,5},{38,24,9},{22,24,11},{22,24,6},{8,40,1}, -{8,40,1},{8,40,1},{8,24,1},{38,10,8},{8,24,4},{8,24,4},{6,24,5},{23,0,8},{6,24,5},{16,7,18},{38,10,4},{8,40,4},{6,40,5},{16,7,18},{21,0,18},{6,40,5},{0,24,20},{21,0,18},{0,24,20},{38,0,26},{38,0,26},{38,0,26},{38,0,26},{38,40,1},{38,40,1},{38,40,1},{38,8,2},{22,24,2},{22,24,2},{24,12,38},{24,26,22},{24,10,30}, -{24,10,22},{8,28,52},{8,26,19},{8,10,6},{8,40,37},{38,26,55},{38,10,30},{24,12,22},{24,26,6},{24,10,14},{24,10,6},{42,6,51},{8,26,18},{24,10,3},{22,10,26},{19,0,51},{22,10,26},{24,26,21},{24,26,21},{24,26,21},{24,10,21},{8,42,9},{8,10,5},{8,10,5},{8,40,1},{38,10,8},{8,40,4},{24,26,5},{24,26,5},{24,26,5},{24,10,5},{28,2,8}, -{24,10,2},{24,10,2},{8,40,0},{42,8,8},{8,40,0},{26,8,18},{24,26,2},{40,10,2},{8,10,1},{26,8,18},{15,6,18},{8,10,1},{0,10,26},{15,6,18},{0,10,26},{24,0,20},{24,0,20},{24,0,20},{24,0,20},{8,26,1},{8,26,1},{8,26,1},{8,40,1},{38,10,4},{38,10,4},{40,14,40},{40,12,21},{40,42,33},{40,42,33},{40,28,55},{40,42,23},{40,42,18}, -{40,26,33},{8,12,57},{24,26,22},{10,12,21},{10,42,5},{10,42,5},{10,26,17},{30,2,51},{40,42,19},{24,42,14},{8,26,21},{35,2,51},{8,26,21},{40,12,21},{40,12,21},{40,12,21},{40,26,21},{40,12,14},{40,26,6},{40,26,6},{40,10,14},{8,42,10},{24,26,6},{10,42,1},{10,42,1},{10,42,1},{10,26,1},{16,3,8},{40,26,2},{40,26,2},{8,26,5},{17,0,8}, -{8,26,5},{16,1,18},{40,12,1},{10,42,4},{8,42,5},{16,1,18},{19,2,18},{8,42,5},{0,26,20},{19,2,18},{0,26,20},{40,0,20},{40,0,20},{40,0,20},{40,0,20},{40,26,5},{40,26,5},{40,26,5},{40,10,5},{24,26,2},{24,26,2},{26,14,38},{26,28,22},{26,12,30},{26,12,22},{10,30,52},{10,28,21},{10,12,6},{10,42,37},{24,28,53},{40,12,31},{26,14,22}, -{26,28,6},{26,12,14},{26,12,6},{47,2,51},{10,28,20},{26,12,3},{24,12,26},{17,2,51},{24,12,26},{26,28,21},{26,28,21},{26,28,21},{26,12,21},{10,44,9},{10,12,5},{10,12,5},{10,42,1},{40,12,9},{40,42,2},{26,28,5},{26,28,5},{26,28,5},{26,12,5},{30,4,8},{26,12,2},{26,12,2},{10,42,0},{15,8,8},{10,42,0},{15,0,18},{26,28,2},{42,12,5}, -{10,12,1},{15,0,18},{5,4,18},{10,12,1},{0,12,26},{5,4,18},{0,12,26},{26,0,20},{26,0,20},{26,0,20},{26,0,20},{10,28,1},{10,28,1},{10,28,1},{10,42,1},{40,42,2},{40,42,2},{42,47,46},{42,14,31},{12,44,37},{42,44,31},{42,46,52},{42,44,21},{42,44,6},{42,28,25},{10,14,51},{26,28,20},{12,30,18},{12,14,2},{12,44,1},{12,44,10},{29,0,51}, -{42,44,20},{42,44,5},{26,28,20},{37,6,51},{26,28,20},{42,30,26},{42,30,26},{42,30,26},{42,28,30},{42,14,9},{42,44,5},{42,44,5},{42,28,9},{10,44,9},{26,28,4},{12,44,0},{12,44,0},{12,44,0},{12,28,0},{45,0,8},{12,28,4},{12,28,4},{26,28,4},{27,8,8},{26,28,4},{45,2,18},{12,14,2},{12,44,1},{26,44,1},{45,2,18},{25,8,18},{26,44,1}, -{0,28,20},{25,8,18},{0,28,20},{42,0,26},{42,0,26},{42,0,26},{42,0,26},{42,44,1},{42,44,1},{42,44,1},{42,12,5},{26,28,0},{26,28,0},{28,47,38},{28,30,22},{28,14,33},{28,14,25},{12,31,55},{12,30,23},{12,14,18},{12,14,33},{42,30,55},{42,14,21},{28,47,22},{28,30,6},{44,14,14},{28,14,9},{46,10,51},{12,30,19},{28,14,6},{26,14,21},{23,8,51}, -{26,14,21},{28,30,21},{28,30,21},{28,30,21},{28,14,21},{12,46,14},{12,14,14},{12,14,14},{12,44,6},{42,14,10},{12,44,6},{28,30,5},{28,30,5},{28,30,5},{28,14,5},{29,2,8},{28,14,2},{28,14,2},{12,44,2},{35,6,8},{12,44,2},{8,7,18},{28,30,2},{44,14,5},{12,14,5},{8,7,18},{33,6,18},{12,14,5},{0,14,20},{33,6,18},{0,14,20},{28,0,20}, -{28,0,20},{28,0,20},{28,0,20},{12,30,5},{12,30,5},{12,30,5},{12,44,5},{42,14,1},{42,14,1},{44,15,46},{44,47,27},{14,46,37},{44,46,31},{44,31,53},{44,46,21},{44,46,6},{44,30,25},{42,47,55},{28,30,22},{14,31,20},{14,47,8},{14,46,1},{14,46,10},{38,3,51},{44,46,20},{44,46,5},{12,30,21},{35,8,51},{12,30,21},{44,31,26},{44,31,26},{44,31,26}, -{44,30,30},{44,47,11},{44,46,5},{44,46,5},{44,30,9},{12,46,9},{28,30,6},{14,46,0},{14,46,0},{14,46,0},{14,30,0},{43,2,8},{14,30,4},{14,30,4},{12,30,5},{21,8,8},{12,30,5},{41,0,18},{44,47,1},{14,46,1},{28,46,1},{41,0,18},{19,8,18},{28,46,1},{0,30,20},{19,8,18},{0,30,20},{44,0,26},{44,0,26},{44,0,26},{44,0,26},{44,46,1}, -{44,46,1},{44,46,1},{44,14,5},{28,30,2},{28,30,2},{30,45,38},{30,31,21},{30,47,24},{30,47,24},{14,29,55},{14,31,22},{14,47,8},{14,46,55},{28,31,53},{44,47,41},{30,45,22},{30,31,5},{30,47,8},{30,47,8},{41,2,51},{14,31,18},{14,47,4},{12,47,37},{17,8,51},{12,47,37},{30,31,20},{30,31,20},{30,31,20},{30,47,24},{14,15,14},{14,47,8},{14,47,8}, -{14,46,6},{44,47,9},{14,46,6},{30,31,4},{30,31,4},{30,31,4},{30,47,8},{38,1,8},{14,47,4},{14,47,4},{14,46,2},{43,28,8},{14,46,2},{9,0,18},{30,31,1},{46,47,1},{14,47,0},{9,0,18},{0,9,18},{14,47,0},{0,47,36},{0,9,18},{0,47,36},{30,0,20},{30,0,20},{30,0,20},{30,0,20},{14,31,4},{14,31,4},{14,31,4},{14,46,5},{14,46,5}, -{14,46,5},{46,43,54},{46,45,41},{47,15,55},{46,15,44},{46,13,51},{46,15,20},{46,15,8},{46,31,24},{14,45,56},{30,31,21},{47,29,21},{47,15,6},{47,15,6},{47,31,17},{23,0,51},{46,15,20},{46,15,8},{30,31,20},{18,9,51},{30,31,20},{46,13,37},{46,13,37},{46,13,37},{46,15,40},{46,45,8},{46,15,4},{46,15,4},{46,31,8},{14,15,14},{30,31,5},{47,15,2}, -{47,15,2},{47,15,2},{47,31,1},{39,0,8},{46,15,4},{46,15,4},{30,31,4},{9,28,8},{30,31,4},{39,2,18},{47,15,5},{47,15,5},{30,15,4},{39,2,18},{34,9,18},{30,15,4},{0,31,20},{34,9,18},{0,31,20},{46,0,36},{46,0,36},{46,0,36},{46,0,36},{46,15,0},{46,15,0},{46,15,0},{46,47,1},{30,31,1},{30,31,1},{31,43,38},{31,29,22},{31,45,25}, -{31,45,22},{47,43,53},{47,29,19},{47,45,6},{47,15,37},{46,29,52},{46,45,27},{31,43,22},{31,29,6},{31,45,9},{31,45,6},{9,6,51},{47,29,18},{47,45,5},{30,45,26},{32,7,51},{30,45,26},{31,13,21},{31,13,21},{31,13,21},{31,45,21},{47,13,9},{47,45,5},{47,45,5},{47,15,1},{46,45,10},{46,15,8},{31,13,5},{31,13,5},{31,13,5},{31,45,5},{23,2,8}, -{31,15,4},{31,15,4},{47,15,0},{20,9,8},{47,15,0},{47,11,18},{31,29,2},{15,45,5},{47,45,1},{47,11,18},{22,9,18},{47,45,1},{0,45,26},{22,9,18},{0,45,26},{31,0,20},{31,0,20},{31,0,20},{31,0,20},{47,29,1},{47,29,1},{47,29,1},{47,15,1},{46,45,1},{46,45,1},{15,11,38},{15,43,21},{15,13,33},{15,13,33},{15,27,55},{15,13,23},{15,13,18}, -{15,29,33},{47,13,59},{31,29,22},{45,27,21},{45,13,6},{45,13,6},{45,29,17},{21,2,51},{15,13,19},{15,13,14},{31,29,21},{24,9,51},{31,29,21},{15,27,21},{15,27,21},{15,27,21},{15,29,21},{15,13,14},{15,29,6},{15,29,6},{15,45,14},{47,13,10},{31,29,6},{45,13,2},{45,13,2},{45,13,2},{45,29,1},{37,2,8},{15,29,2},{15,29,2},{31,29,5},{34,7,8}, -{31,29,5},{35,0,18},{15,43,1},{45,13,5},{31,13,5},{35,0,18},{36,7,18},{31,13,5},{0,29,20},{36,7,18},{0,29,20},{15,0,20},{15,0,20},{15,0,20},{15,0,20},{15,13,5},{15,13,5},{15,13,5},{15,45,5},{31,29,2},{31,29,2},{29,41,38},{29,27,20},{29,43,25},{29,43,25},{45,41,53},{45,27,21},{45,43,6},{45,13,37},{31,27,53},{15,43,31},{29,41,22}, -{29,27,4},{29,43,9},{29,43,9},{35,2,51},{45,27,20},{45,43,5},{31,43,26},{34,5,51},{31,43,26},{29,27,20},{29,27,20},{29,27,20},{29,13,24},{45,11,9},{45,43,5},{45,43,5},{45,13,1},{15,43,9},{15,13,2},{29,27,4},{29,27,4},{29,27,4},{29,13,8},{44,1,8},{29,13,4},{29,13,4},{45,13,0},{26,9,8},{45,13,0},{3,0,18},{29,27,0},{13,43,5}, -{45,43,1},{3,0,18},{0,3,18},{45,43,1},{0,43,26},{0,3,18},{0,43,26},{29,0,20},{29,0,20},{29,0,20},{29,0,20},{45,27,1},{45,27,1},{45,27,1},{45,13,1},{15,13,2},{15,13,2},{13,9,46},{13,41,31},{43,11,37},{13,11,31},{13,25,53},{13,11,21},{13,11,6},{13,27,30},{29,11,56},{29,27,22},{43,25,18},{43,41,2},{43,11,1},{43,27,16},{17,0,51}, -{13,11,20},{13,11,5},{29,27,21},{18,3,51},{29,27,21},{13,25,26},{13,25,26},{13,25,26},{13,27,27},{13,41,9},{13,27,3},{13,27,3},{13,27,14},{45,11,9},{29,27,6},{43,11,0},{43,11,0},{43,11,0},{43,27,0},{31,5,8},{13,27,2},{13,27,2},{29,27,5},{14,9,8},{29,27,5},{31,3,18},{43,41,2},{43,11,1},{29,11,1},{31,3,18},{34,3,18},{29,11,1}, -{0,27,20},{34,3,18},{0,27,20},{13,0,26},{13,0,26},{13,0,26},{13,0,26},{13,11,1},{13,11,1},{13,11,1},{13,43,5},{29,27,2},{29,27,2},{27,39,38},{27,25,22},{27,41,33},{27,41,25},{43,23,55},{43,25,23},{43,41,18},{43,41,33},{13,25,55},{13,41,21},{27,39,22},{27,25,6},{11,41,14},{27,41,9},{27,9,51},{43,25,19},{27,41,6},{13,41,21},{14,7,51}, -{13,41,21},{27,9,21},{27,9,21},{27,9,21},{27,41,21},{43,9,14},{43,25,14},{43,25,14},{43,11,5},{13,41,10},{43,11,5},{27,9,5},{27,9,5},{27,9,5},{27,41,5},{17,2,8},{27,41,2},{27,41,2},{43,11,1},{16,1,8},{43,11,1},{43,7,18},{27,25,2},{11,41,5},{27,41,5},{43,7,18},{18,1,18},{27,41,5},{0,41,20},{18,1,18},{0,41,20},{27,0,20}, 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-{12,1,3690},{12,1,3690},{8,1,50},{0,1,1241},{0,1,1241},{45,1,65535},{14,1,33274},{42,1,19608},{42,1,13375},{47,1,62627},{42,1,22211},{10,1,6045},{24,1,138},{36,1,39015},{0,1,1732},{35,1,1048},{5,1,766},{5,1,666},{37,1,212},{3,3,1473},{7,1,675},{23,1,410},{14,1,1},{3,3,1473},{14,1,1},{13,1,14121},{13,1,14121},{13,1,14121},{45,1,10571},{45,1,11434},{30,1,6081},{30,1,6081}, -{40,1,137},{36,1,6926},{2,1,1445},{5,1,666},{5,1,666},{5,1,666},{37,1,212},{35,3,1105},{23,1,410},{23,1,410},{14,1,1},{25,1,1105},{14,1,1},{1,1,0},{1,1,0},{1,1,0},{1,1,0},{1,1,0},{1,1,0},{1,1,0},{0,1,0},{1,1,0},{0,1,0},{15,0,9256},{15,0,9256},{15,0,9256},{15,0,9256},{14,1,3985},{14,1,3985},{14,1,3985},{40,1,137},{2,1,1445}, -{2,1,1445}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_astc_0_255.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_astc_0_255.inc deleted file mode 100644 index da4e7fee9..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_astc_0_255.inc +++ /dev/null @@ -1,481 +0,0 @@ -{0,16,18},{0,12,1},{0,8,0},{0,7,5},{0,10,35},{0,6,21},{0,6,9},{0,4,24},{1,4,36},{0,4,25},{0,16,18},{0,12,1},{0,8,0},{0,7,5},{5,0,35},{0,6,21},{0,6,9},{0,4,24},{10,0,35},{0,4,24},{0,7,0},{0,7,0},{0,7,0},{0,3,0},{0,4,2},{0,3,0},{0,3,0},{0,1,1},{0,2,2},{0,1,1},{0,7,0}, -{0,7,0},{0,7,0},{0,3,0},{2,0,2},{0,3,0},{0,3,0},{0,1,1},{4,0,2},{0,1,1},{8,0,18},{0,12,1},{0,8,0},{0,7,5},{8,0,18},{16,0,18},{0,7,5},{0,5,18},{16,0,18},{0,5,18},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{3,34,36},{3,23,19},{4,17,25}, -{3,16,19},{0,34,51},{0,20,18},{0,16,1},{0,13,22},{0,15,68},{0,12,33},{6,28,18},{6,21,0},{6,16,1},{5,15,3},{17,0,51},{1,19,18},{2,15,1},{0,13,22},{34,0,51},{0,13,22},{3,25,18},{3,25,18},{3,25,18},{3,14,18},{0,25,8},{0,16,1},{0,16,1},{0,10,0},{0,12,17},{0,9,5},{6,19,0},{6,19,0},{6,19,0},{6,12,0},{12,0,8}, 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b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_atc_55.inc deleted file mode 100644 index 7acedd6a6..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_atc_55.inc +++ /dev/null @@ -1,481 +0,0 @@ -{0,2,20},{0,1,10},{0,1,1},{0,1,9},{0,1,35},{0,1,27},{0,1,18},{0,1,61},{0,1,52},{0,0,68},{0,2,20},{0,1,10},{0,1,1},{0,1,9},{0,1,35},{0,1,27},{0,1,18},{0,1,61},{1,0,35},{0,1,61},{0,1,1},{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,1,1}, -{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{1,0,18},{0,1,10},{0,1,1},{0,1,9},{1,0,18},{0,1,18},{0,1,9},{0,1,36},{0,1,18},{0,1,36},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,4,56},{0,3,38},{0,2,52}, 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-{15,0,9250},{15,0,9250},{15,0,9250},{10,31,2792},{10,31,2792},{10,31,2792},{7,31,145},{0,31,2610},{0,31,2610},{16,31,63318},{14,31,42019},{12,31,25930},{11,31,19324},{16,31,59178},{11,31,28845},{9,31,8605},{8,31,276},{6,31,56253},{0,30,6420},{27,31,1366},{27,31,1094},{26,31,872},{25,31,397},{30,27,2017},{25,31,1298},{23,31,794},{13,31,1},{30,28,2017},{13,31,1},{19,31,14244},{19,31,14244},{19,31,14244}, -{17,31,11312},{16,31,11037},{13,31,6429},{13,31,6429},{8,31,260},{6,31,10457},{0,31,2642},{26,31,872},{26,31,872},{26,31,872},{25,31,397},{31,22,1513},{23,31,794},{23,31,794},{13,31,1},{29,27,1513},{13,31,1},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{0,31,0},{31,31,0},{0,31,0},{16,0,9248},{16,0,9248},{16,0,9248},{16,0,9248},{12,31,3074}, -{12,31,3074},{12,31,3074},{8,31,260},{0,31,2642},{0,31,2642},{17,31,58848},{15,31,39619},{13,31,24975},{12,31,19007},{16,31,54474},{13,31,27057},{10,31,8569},{9,31,461},{8,31,51302},{0,31,5046},{28,31,979},{27,31,806},{27,31,637},{26,31,292},{31,26,1473},{26,31,953},{24,31,605},{16,31,0},{29,29,1473},{16,31,0},{19,31,13604},{19,31,13604},{19,31,13604},{18,31,11057},{16,31,10429},{14,31,6339},{14,31,6339}, -{10,31,424},{8,31,9713},{1,31,2900},{27,31,637},{27,31,637},{27,31,637},{26,31,292},{30,25,1105},{24,31,605},{24,31,605},{16,31,0},{30,27,1105},{16,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{0,31,0},{31,31,0},{0,31,0},{17,0,9248},{17,0,9248},{17,0,9248},{17,0,9248},{12,31,3330},{12,31,3330},{12,31,3330},{10,31,424},{1,31,2900}, -{1,31,2900}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_atc_56.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_atc_56.inc deleted file mode 100644 index 2b56c0944..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_atc_56.inc +++ /dev/null @@ -1,481 +0,0 @@ -{0,3,20},{0,3,5},{0,2,1},{0,2,9},{0,2,35},{0,2,27},{0,1,17},{0,1,24},{0,1,41},{0,1,25},{0,3,20},{0,3,5},{0,2,1},{0,2,9},{0,2,35},{0,2,27},{0,1,17},{0,1,24},{1,0,35},{0,1,24},{0,1,1},{0,1,1},{0,1,1},{0,1,0},{0,1,2},{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{0,1,1}, -{0,1,1},{0,1,1},{0,1,0},{0,1,2},{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{1,0,18},{0,3,5},{0,2,1},{0,2,9},{1,0,18},{1,1,18},{0,2,9},{0,1,20},{1,1,18},{0,1,20},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,9,54},{0,7,37},{0,4,52}, -{0,4,36},{0,7,52},{0,5,21},{0,4,0},{0,3,21},{0,4,88},{0,3,37},{1,5,24},{1,5,9},{1,4,5},{1,4,13},{2,1,51},{0,5,21},{0,4,0},{0,3,21},{3,1,51},{0,3,21},{0,7,36},{0,7,36},{0,7,36},{0,4,36},{0,5,10},{0,4,0},{0,4,0},{0,2,5},{0,3,26},{0,2,14},{1,3,5},{1,3,5},{1,3,5},{1,3,4},{1,2,8}, -{0,4,0},{0,4,0},{0,2,5},{2,1,8},{0,2,5},{2,2,18},{0,7,1},{1,4,1},{0,4,0},{2,2,18},{2,3,18},{0,4,0},{0,3,20},{2,3,18},{0,3,20},{0,0,36},{0,0,36},{0,0,36},{0,0,36},{0,4,0},{0,4,0},{0,4,0},{0,2,1},{0,2,10},{0,2,10},{1,11,54},{1,9,37},{1,6,52},{1,6,36},{1,9,52},{1,7,21},{1,6,0}, -{1,5,21},{0,7,63},{0,5,25},{2,7,24},{2,7,9},{2,6,5},{2,6,13},{3,3,51},{1,7,21},{1,6,0},{1,5,21},{4,3,51},{1,5,21},{1,9,36},{1,9,36},{1,9,36},{1,6,36},{1,7,10},{1,6,0},{1,6,0},{1,4,5},{0,6,11},{0,5,9},{2,5,5},{2,5,5},{2,5,5},{2,5,4},{3,1,8},{1,6,0},{1,6,0},{1,4,5},{3,3,8}, -{1,4,5},{3,4,18},{1,9,1},{2,6,1},{1,6,0},{3,4,18},{7,0,18},{1,6,0},{0,5,20},{7,0,18},{0,5,20},{1,0,36},{1,0,36},{1,0,36},{1,0,36},{1,6,0},{1,6,0},{1,6,0},{1,4,1},{0,6,2},{0,6,2},{2,13,54},{2,11,37},{2,8,52},{2,8,36},{2,11,52},{2,9,21},{2,8,0},{2,7,21},{0,11,51},{1,7,25},{3,9,24}, -{3,9,9},{3,8,5},{3,8,13},{5,1,51},{2,9,21},{2,8,0},{2,7,21},{9,0,51},{2,7,21},{2,11,36},{2,11,36},{2,11,36},{2,8,36},{2,9,10},{2,8,0},{2,8,0},{2,6,5},{1,8,11},{1,7,9},{3,7,5},{3,7,5},{3,7,5},{3,7,4},{3,6,8},{2,8,0},{2,8,0},{2,6,5},{8,0,8},{2,6,5},{4,6,18},{2,11,1},{3,8,1}, -{2,8,0},{4,6,18},{8,2,18},{2,8,0},{0,7,20},{8,2,18},{0,7,20},{2,0,36},{2,0,36},{2,0,36},{2,0,36},{2,8,0},{2,8,0},{2,8,0},{2,6,1},{1,8,2},{1,8,2},{3,15,70},{3,13,51},{4,10,69},{3,10,52},{3,14,52},{3,12,25},{3,10,4},{3,9,27},{1,13,53},{2,10,26},{4,12,22},{4,11,12},{4,10,5},{4,10,9},{6,4,51}, -{2,13,22},{3,10,3},{3,9,26},{11,1,51},{3,9,26},{3,13,51},{3,13,51},{3,13,51},{3,10,51},{3,12,9},{3,11,2},{3,11,2},{3,9,2},{2,11,9},{3,9,10},{4,10,4},{4,10,4},{4,10,4},{4,9,5},{6,2,8},{3,11,1},{3,11,1},{3,9,1},{11,0,8},{3,9,1},{7,2,18},{3,13,1},{4,10,1},{3,10,2},{7,2,18},{11,2,18},{3,10,2}, -{0,9,26},{11,2,18},{0,9,26},{3,0,50},{3,0,50},{3,0,50},{3,0,50},{3,11,1},{3,11,1},{3,11,1},{3,9,1},{2,10,0},{2,10,0},{4,17,54},{4,15,36},{4,13,54},{4,12,38},{4,15,52},{4,14,24},{4,12,3},{4,11,26},{2,15,53},{3,12,26},{5,14,22},{5,13,12},{5,12,5},{5,12,9},{8,2,51},{3,15,22},{4,12,3},{4,11,26},{12,3,51}, -{4,11,26},{4,15,36},{4,15,36},{4,15,36},{4,12,37},{4,14,8},{4,12,2},{4,12,2},{4,11,1},{3,13,9},{3,11,14},{5,12,4},{5,12,4},{5,12,4},{5,11,5},{8,0,8},{4,12,2},{4,12,2},{4,11,1},{11,3,8},{4,11,1},{9,0,18},{4,15,0},{5,12,1},{4,12,2},{9,0,18},{15,0,18},{4,12,2},{0,11,26},{15,0,18},{0,11,26},{4,0,36}, -{4,0,36},{4,0,36},{4,0,36},{4,12,1},{4,12,1},{4,12,1},{4,11,0},{3,12,0},{3,12,0},{5,19,54},{5,17,37},{5,15,54},{5,14,38},{5,17,52},{5,15,27},{5,14,3},{5,13,26},{3,17,52},{4,14,26},{6,15,24},{6,15,12},{6,14,5},{6,14,9},{10,1,51},{4,17,21},{5,14,3},{5,13,26},{17,0,51},{5,13,26},{5,17,36},{5,17,36},{5,17,36}, -{5,14,37},{5,15,10},{5,14,2},{5,14,2},{5,13,1},{4,15,12},{4,13,11},{6,14,4},{6,14,4},{6,14,4},{6,13,5},{9,2,8},{5,14,2},{5,14,2},{5,13,1},{16,0,8},{5,13,1},{10,2,18},{5,17,1},{6,14,1},{5,14,2},{10,2,18},{16,2,18},{5,14,2},{0,13,26},{16,2,18},{0,13,26},{5,0,36},{5,0,36},{5,0,36},{5,0,36},{5,14,1}, -{5,14,1},{5,14,1},{5,13,0},{4,14,0},{4,14,0},{6,21,54},{6,19,37},{6,16,52},{6,16,36},{6,19,52},{6,17,21},{6,16,0},{6,15,26},{4,19,51},{5,15,36},{7,17,24},{7,17,9},{7,16,5},{7,16,13},{11,3,51},{6,17,21},{6,16,0},{6,15,26},{18,2,51},{6,15,26},{6,19,36},{6,19,36},{6,19,36},{6,16,36},{6,17,10},{6,16,0},{6,16,0}, -{6,15,1},{5,16,11},{5,15,11},{7,15,5},{7,15,5},{7,15,5},{7,15,5},{11,1,8},{6,16,0},{6,16,0},{6,15,1},{17,2,8},{6,15,1},{11,4,18},{6,19,1},{7,16,1},{6,16,0},{11,4,18},{17,4,18},{6,16,0},{0,15,26},{17,4,18},{0,15,26},{6,0,36},{6,0,36},{6,0,36},{6,0,36},{6,16,0},{6,16,0},{6,16,0},{6,15,0},{5,16,2}, -{5,16,2},{7,23,70},{7,21,51},{8,18,69},{7,18,52},{7,22,52},{7,20,25},{7,18,4},{7,17,27},{5,21,53},{6,18,26},{8,20,22},{8,19,12},{8,18,5},{8,18,9},{13,2,51},{6,21,22},{7,18,3},{7,17,26},{21,2,51},{7,17,26},{7,21,51},{7,21,51},{7,21,51},{7,18,51},{7,20,9},{7,19,2},{7,19,2},{7,17,2},{6,19,9},{7,17,10},{8,18,4}, -{8,18,4},{8,18,4},{8,17,5},{13,0,8},{7,19,1},{7,19,1},{7,17,1},{20,2,8},{7,17,1},{14,0,18},{7,21,1},{8,18,1},{7,18,2},{14,0,18},{20,4,18},{7,18,2},{0,17,26},{20,4,18},{0,17,26},{7,0,50},{7,0,50},{7,0,50},{7,0,50},{7,19,1},{7,19,1},{7,19,1},{7,17,1},{6,18,0},{6,18,0},{8,25,54},{8,23,36},{8,21,54}, -{8,20,38},{8,24,51},{8,22,24},{8,20,3},{8,19,26},{6,23,53},{7,20,26},{9,22,22},{9,21,12},{9,20,5},{9,20,9},{14,4,51},{7,23,22},{8,20,3},{8,19,26},{25,0,51},{8,19,26},{8,23,36},{8,23,36},{8,23,36},{8,20,37},{8,22,8},{8,20,2},{8,20,2},{8,19,1},{7,21,9},{7,19,14},{9,20,4},{9,20,4},{9,20,4},{9,19,5},{14,2,8}, -{8,20,2},{8,20,2},{8,19,1},{24,0,8},{8,19,1},{15,2,18},{8,23,0},{9,20,1},{8,20,2},{15,2,18},{25,1,18},{8,20,2},{0,19,26},{25,1,18},{0,19,26},{8,0,36},{8,0,36},{8,0,36},{8,0,36},{8,20,1},{8,20,1},{8,20,1},{8,19,0},{7,20,0},{7,20,0},{9,27,54},{9,25,36},{9,23,54},{9,22,38},{9,26,51},{9,24,24},{9,22,3}, -{9,21,26},{7,25,53},{8,22,26},{10,24,22},{10,23,12},{10,22,5},{10,22,9},{16,2,51},{8,25,19},{9,22,3},{9,21,26},{27,1,51},{9,21,26},{9,25,36},{9,25,36},{9,25,36},{9,22,37},{9,24,8},{9,22,2},{9,22,2},{9,21,1},{8,23,12},{8,21,11},{10,22,4},{10,22,4},{10,22,4},{10,21,5},{16,0,8},{9,22,2},{9,22,2},{9,21,1},{26,1,8}, -{9,21,1},{17,0,18},{9,25,0},{10,22,1},{9,22,2},{17,0,18},{26,3,18},{9,22,2},{0,21,26},{26,3,18},{0,21,26},{9,0,36},{9,0,36},{9,0,36},{9,0,36},{9,22,1},{9,22,1},{9,22,1},{9,21,0},{8,22,0},{8,22,0},{10,29,54},{10,27,36},{10,25,54},{10,24,38},{10,28,51},{10,26,24},{10,24,3},{10,23,26},{8,27,52},{9,24,26},{11,26,22}, -{11,25,12},{11,24,5},{11,24,9},{17,4,51},{9,27,19},{10,24,3},{10,23,26},{27,4,51},{10,23,26},{10,27,36},{10,27,36},{10,27,36},{10,24,37},{10,26,8},{10,24,2},{10,24,2},{10,23,1},{9,25,12},{9,23,11},{11,24,4},{11,24,4},{11,24,4},{11,23,5},{17,2,8},{10,24,2},{10,24,2},{10,23,1},{27,3,8},{10,23,1},{18,2,18},{10,27,0},{11,24,1}, -{10,24,2},{18,2,18},{31,0,18},{10,24,2},{0,23,26},{31,0,18},{0,23,26},{10,0,36},{10,0,36},{10,0,36},{10,0,36},{10,24,1},{10,24,1},{10,24,1},{10,23,0},{9,24,0},{9,24,0},{11,31,70},{11,29,52},{11,27,70},{11,27,54},{11,30,53},{11,28,20},{11,27,5},{11,26,25},{10,28,56},{10,26,22},{12,28,22},{12,27,9},{12,26,8},{12,26,9},{19,3,51}, -{11,28,19},{11,27,4},{10,26,21},{30,4,51},{10,26,21},{11,30,50},{11,30,50},{11,30,50},{11,27,50},{11,28,11},{11,27,1},{11,27,1},{11,25,2},{10,27,11},{11,25,10},{12,26,4},{12,26,4},{12,26,4},{12,25,5},{19,1,8},{11,27,0},{11,27,0},{11,25,1},{29,4,8},{11,25,1},{20,1,18},{11,29,2},{12,26,4},{11,27,4},{20,1,18},{29,6,18},{11,27,4}, -{0,26,20},{29,6,18},{0,26,20},{11,0,50},{11,0,50},{11,0,50},{11,0,50},{11,27,1},{11,27,1},{11,27,1},{11,25,2},{10,26,2},{10,26,2},{12,33,54},{12,31,37},{12,29,56},{12,29,41},{12,32,51},{12,30,22},{12,29,5},{12,28,24},{11,30,56},{11,28,22},{13,30,22},{13,29,9},{13,28,8},{13,28,9},{20,5,51},{12,30,22},{12,29,5},{11,28,21},{31,6,51}, -{11,28,21},{12,31,37},{12,31,37},{12,31,37},{12,29,37},{12,30,8},{12,29,1},{12,29,1},{12,27,0},{11,29,11},{12,27,9},{13,28,4},{13,28,4},{13,28,4},{13,27,5},{20,3,8},{12,29,1},{12,29,1},{12,27,0},{30,6,8},{12,27,0},{21,3,18},{12,31,1},{13,28,4},{13,28,5},{21,3,18},{30,8,18},{13,28,5},{0,28,20},{30,8,18},{0,28,20},{12,0,36}, -{12,0,36},{12,0,36},{12,0,36},{12,29,0},{12,29,0},{12,29,0},{12,27,0},{11,28,2},{11,28,2},{13,35,54},{13,33,36},{13,31,56},{13,31,41},{13,34,51},{13,32,24},{13,31,5},{13,30,24},{11,33,53},{12,30,21},{14,32,22},{14,31,9},{14,30,8},{14,30,9},{23,0,51},{12,33,19},{13,31,5},{12,30,21},{31,9,51},{12,30,21},{13,33,36},{13,33,36},{13,33,36}, -{13,31,37},{13,32,8},{13,31,1},{13,31,1},{13,29,0},{12,31,9},{13,29,9},{14,30,4},{14,30,4},{14,30,4},{14,29,5},{21,5,8},{13,31,1},{13,31,1},{13,29,0},{31,8,8},{13,29,0},{22,5,18},{13,33,0},{14,30,4},{14,30,5},{22,5,18},{31,10,18},{14,30,5},{0,30,20},{31,10,18},{0,30,20},{13,0,36},{13,0,36},{13,0,36},{13,0,36},{13,31,0}, -{13,31,0},{13,31,0},{13,29,0},{12,30,1},{12,30,1},{14,37,54},{14,35,36},{14,33,54},{14,32,38},{14,36,51},{14,34,24},{14,32,3},{14,32,35},{12,35,52},{13,32,26},{15,34,22},{15,33,12},{15,32,5},{15,32,9},{24,2,51},{13,35,19},{14,32,3},{13,32,26},{27,17,51},{13,32,26},{14,35,36},{14,35,36},{14,35,36},{14,32,37},{14,34,8},{14,32,2},{14,32,2}, -{14,31,0},{13,33,12},{14,31,9},{15,32,4},{15,32,4},{15,32,4},{15,31,5},{24,0,8},{14,32,2},{14,32,2},{14,31,0},{31,11,8},{14,31,0},{25,0,18},{14,35,0},{15,32,1},{14,32,2},{25,0,18},{31,13,18},{14,32,2},{0,32,26},{31,13,18},{0,32,26},{14,0,36},{14,0,36},{14,0,36},{14,0,36},{14,32,1},{14,32,1},{14,32,1},{14,31,0},{13,32,0}, 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-{12,63,3074},{12,63,3074},{8,63,260},{0,63,2642},{0,63,2642},{17,63,58848},{15,63,39619},{13,63,24975},{12,63,19007},{16,63,54474},{13,63,27057},{10,63,8569},{9,63,461},{8,63,51302},{0,63,5046},{28,63,979},{27,63,806},{27,63,637},{26,63,292},{30,56,1473},{26,63,953},{24,63,605},{16,63,0},{30,58,1473},{16,63,0},{19,63,13604},{19,63,13604},{19,63,13604},{18,63,11057},{16,63,10429},{14,63,6339},{14,63,6339}, -{10,63,424},{8,63,9713},{1,63,2900},{27,63,637},{27,63,637},{27,63,637},{26,63,292},{31,48,1105},{24,63,605},{24,63,605},{16,63,0},{31,54,1105},{16,63,0},{31,63,0},{31,63,0},{31,63,0},{31,63,0},{31,63,0},{31,63,0},{31,63,0},{0,63,0},{31,63,0},{0,63,0},{17,0,9248},{17,0,9248},{17,0,9248},{17,0,9248},{12,63,3330},{12,63,3330},{12,63,3330},{10,63,424},{1,63,2900}, -{1,63,2900}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_bc7_m5_alpha.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_bc7_m5_alpha.inc deleted file mode 100644 index 666985292..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_bc7_m5_alpha.inc +++ /dev/null @@ -1,49 +0,0 @@ -{7,0,47},{7,0,44},{2,0,15},{2,0,12},{8,2,48},{0,0,0},{15,0,27},{15,1,24},{9,0,7},{15,1,24},{23,3,96},{6,0,3},{24,7,27},{24,7,24},{18,3,6},{18,5,4},{24,5,16},{21,1,6},{32,15,27},{32,15,24},{26,11,6},{26,13,4},{32,13,16},{22,3,1},{41,24,27},{41,24,24},{35,20,6},{35,22,4},{41,22,16},{31,12,1},{49,32,27}, -{49,32,24},{43,28,6},{43,30,4},{49,30,16},{39,20,1},{57,40,27},{57,40,24},{51,36,6},{51,38,4},{57,38,16},{47,28,1},{65,48,27},{65,48,24},{59,44,6},{59,46,4},{65,46,16},{55,36,1},{74,57,27},{74,57,24},{68,53,6},{68,55,4},{74,55,16},{64,45,1},{82,65,27},{82,65,24},{76,61,6},{76,63,4},{82,63,16},{72,53,1},{90,73,27},{90,73,24},{84,69,6}, -{84,71,4},{90,71,16},{80,61,1},{98,81,27},{98,81,24},{92,77,6},{92,79,4},{98,79,16},{88,69,1},{107,90,27},{107,90,24},{101,86,6},{101,88,4},{107,88,16},{97,78,1},{115,98,27},{115,98,24},{109,94,6},{109,96,4},{115,96,16},{105,86,1},{123,106,27},{123,106,24},{117,102,6},{117,104,4},{123,104,16},{113,94,1},{131,114,27},{131,114,24},{125,110,6},{125,112,4},{131,112,16}, -{121,102,1},{140,123,27},{140,123,24},{134,119,6},{134,121,4},{140,121,16},{130,111,1},{148,131,27},{148,131,24},{142,127,6},{142,129,4},{148,129,16},{138,119,1},{156,139,27},{156,139,24},{150,135,6},{150,137,4},{156,137,16},{146,127,1},{164,147,27},{164,147,24},{158,143,6},{158,145,4},{164,145,16},{154,135,1},{173,156,27},{173,156,24},{167,152,6},{167,154,4},{173,154,16},{163,144,1},{181,164,27}, -{181,164,24},{175,160,6},{175,162,4},{181,162,16},{171,152,1},{189,172,27},{189,172,24},{183,168,6},{183,170,4},{189,170,16},{179,160,1},{197,180,27},{197,180,24},{191,176,6},{191,178,4},{197,178,16},{187,168,1},{206,189,27},{206,189,24},{200,185,6},{200,187,4},{206,187,16},{196,177,1},{214,197,27},{214,197,24},{208,193,6},{208,195,4},{214,195,16},{204,185,1},{222,205,27},{222,205,24},{216,201,6}, -{216,203,4},{222,203,16},{212,193,1},{230,213,27},{230,213,24},{224,209,6},{224,211,4},{230,211,16},{220,201,1},{239,222,27},{239,222,24},{233,218,6},{233,220,4},{239,220,16},{229,210,1},{247,230,27},{247,230,24},{241,226,6},{241,228,4},{247,228,16},{237,218,1},{255,238,27},{255,238,24},{249,234,6},{249,236,4},{255,236,16},{245,226,1},{255,247,7},{255,248,4},{255,247,7},{255,248,4},{255,0,0}, 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-{255,129,28},{209,0,7},{220,80,8},{255,147,16},{126,0,3},{246,0,7},{255,138,28},{218,0,7},{228,88,8},{255,172,16},{134,0,3},{249,3,7},{245,91,8},{228,3,7},{236,96,8},{255,196,16},{142,6,3},{251,14,7},{250,102,8},{237,12,7},{245,105,8},{255,223,16},{151,15,3},{253,22,7},{254,112,8},{245,20,7},{253,113,8},{255,248,16},{159,23,3},{253,31,7},{255,124,8},{249,28,7}, -{255,124,8},{255,0,0},{167,31,3},{254,39,7},{255,10,4},{252,37,7},{255,10,4},{255,0,0},{175,39,3},{255,48,7},{255,38,4},{254,48,7},{255,38,4},{255,0,0},{184,48,3},{255,56,7},{255,62,4},{255,56,7},{255,62,4},{255,0,0},{192,56,3},{255,65,7},{255,86,4},{255,65,7},{255,86,4},{255,0,0},{200,64,3},{255,74,7},{255,111,4},{255,77,7},{255,111,4},{255,0,0}, -{208,5,2}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_bc7_m5_color.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_bc7_m5_color.inc deleted file mode 100644 index c0780988d..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_bc7_m5_color.inc +++ /dev/null @@ -1,481 +0,0 @@ -{0,7,18},{0,5,2},{0,4,1},{0,3,8},{0,4,35},{0,3,24},{0,3,12},{0,2,29},{0,2,36},{0,2,30},{0,7,18},{0,5,2},{0,4,1},{0,3,8},{2,0,35},{0,3,24},{0,3,12},{0,2,29},{4,0,35},{0,2,29},{0,3,0},{0,3,0},{0,3,0},{0,1,1},{0,1,2},{0,1,2},{0,1,2},{0,1,1},{1,0,3},{0,1,2},{0,3,0}, -{0,3,0},{0,3,0},{0,1,1},{1,0,2},{1,0,2},{1,0,2},{0,1,1},{1,0,2},{0,1,1},{4,0,18},{0,5,2},{0,4,1},{0,3,8},{4,0,18},{7,0,18},{0,3,8},{0,2,20},{7,0,18},{0,2,20},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{2,15,38},{2,11,20},{2,8,24}, -{1,8,21},{0,16,51},{0,10,19},{0,8,2},{0,6,24},{0,8,76},{0,6,40},{3,13,18},{3,10,2},{3,8,1},{3,7,5},{8,0,51},{1,9,19},{0,8,2},{0,6,24},{16,0,51},{0,6,24},{2,11,20},{2,11,20},{2,11,20},{1,7,20},{0,12,8},{0,7,2},{0,7,2},{0,5,1},{0,5,19},{0,5,10},{3,9,0},{3,9,0},{3,9,0},{3,6,0},{6,0,8}, -{1,7,0},{1,7,0},{0,5,1},{12,0,8},{0,5,1},{10,0,18},{2,11,0},{3,8,1},{0,8,1},{10,0,18},{20,0,18},{0,8,1},{0,6,20},{20,0,18},{0,6,20},{1,0,20},{1,0,20},{1,0,20},{1,0,20},{0,9,0},{0,9,0},{0,9,0},{0,4,1},{0,3,8},{0,3,8},{6,19,38},{6,15,20},{6,12,24},{5,12,21},{4,20,51},{4,14,19},{4,12,2}, -{4,10,24},{0,14,52},{1,10,20},{7,17,18},{7,14,2},{7,12,1},{7,11,5},{14,0,51},{5,13,19},{4,12,2},{1,10,20},{29,0,51},{1,10,20},{6,15,20},{6,15,20},{6,15,20},{5,11,20},{4,16,8},{4,11,2},{4,11,2},{4,9,1},{0,12,8},{1,9,2},{7,13,0},{7,13,0},{7,13,0},{7,10,0},{12,0,8},{5,11,0},{5,11,0},{3,9,0},{24,0,8}, -{3,9,0},{15,1,18},{6,15,0},{7,12,1},{3,12,0},{15,1,18},{32,0,18},{3,12,0},{0,10,20},{32,0,18},{0,10,20},{5,0,20},{5,0,20},{5,0,20},{5,0,20},{4,13,0},{4,13,0},{4,13,0},{4,8,1},{1,10,0},{1,10,0},{10,23,38},{10,19,20},{10,16,24},{9,16,21},{8,24,51},{8,18,19},{8,16,2},{8,14,24},{3,18,52},{5,14,20},{11,21,18}, 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b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_dxt1_5.inc deleted file mode 100644 index 824455095..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_dxt1_5.inc +++ /dev/null @@ -1,494 +0,0 @@ -// Copyright (C) 2017-2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -{0,2,18},{0,1,9},{0,1,0},{0,1,9},{0,1,40},{0,1,22},{0,1,13},{0,1,61},{0,1,47},{0,1,65},{0,2,18},{0,1,9},{0,1,0},{0,1,9},{0,1,40},{0,1,22},{0,1,13},{0,1,61},{1,0,40},{0,1,61},{0,1,0},{0,1,0},{0,1,0},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,1,0}, 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-{16,31,1717},{16,31,1717},{0,30,61},{27,24,4418},{0,30,61},{31,31,4},{31,31,4},{31,31,4},{30,31,1},{31,31,4},{31,31,4},{30,31,1},{0,31,4},{31,31,4},{0,31,4},{11,0,9250},{11,0,9250},{11,0,9250},{11,0,9250},{6,31,2440},{6,31,2440},{6,31,2440},{3,27,10},{0,25,2509},{0,25,2509},{18,31,24418},{16,31,19831},{15,31,18144},{13,31,11876},{16,31,23685},{11,31,10015},{8,31,6638}, -{3,31,170},{3,31,16879},{0,30,2738},{25,31,3699},{24,31,2766},{24,31,2405},{21,31,820},{31,20,5164},{20,31,2584},{18,31,1552},{0,31,9},{30,26,5164},{0,31,9},{15,31,18144},{15,31,18144},{15,31,18144},{13,31,11876},{12,31,15696},{8,31,6638},{8,31,6638},{4,30,132},{0,31,10150},{0,29,2624},{24,31,2405},{24,31,2405},{24,31,2405},{21,31,820},{31,15,3872},{18,31,1552},{18,31,1552},{0,31,9},{31,23,3872}, 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-{0,31,0},{31,31,0},{0,31,0},{14,0,9250},{14,0,9250},{14,0,9250},{14,0,9250},{9,31,3176},{9,31,3176},{9,31,3176},{6,31,5},{0,30,1556},{0,30,1556},{20,31,19810},{19,31,16741},{18,31,15584},{16,31,11057},{19,31,18721},{14,31,8860},{12,31,6234},{7,31,10},{7,31,13210},{0,31,1325},{27,31,1868},{26,31,1464},{26,31,1268},{24,31,397},{31,23,2649},{23,31,1329},{22,31,794},{8,31,0},{31,27,2649}, -{8,31,0},{18,31,15584},{18,31,15584},{18,31,15584},{16,31,11057},{15,31,12858},{12,31,6234},{12,31,6234},{7,31,10},{3,31,8150},{0,31,1325},{26,31,1268},{26,31,1268},{26,31,1268},{24,31,397},{31,19,1989},{22,31,794},{22,31,794},{8,31,0},{31,25,1989},{8,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{0,31,0},{31,31,0},{0,31,0},{15,0,9250}, -{15,0,9250},{15,0,9250},{15,0,9250},{11,31,3365},{11,31,3365},{11,31,3365},{7,31,10},{0,31,1325},{0,31,1325},{20,31,18626},{19,31,15845},{19,31,14756},{17,31,10897},{19,31,17297},{15,31,8442},{13,31,6285},{8,31,68},{8,31,12227},{0,31,1341},{27,31,1452},{27,31,1089},{27,31,968},{25,31,325},{31,24,2018},{24,31,1011},{23,31,605},{11,31,0},{30,28,2018},{11,31,0},{19,31,14756},{19,31,14756},{19,31,14756}, -{17,31,10897},{16,31,12077},{13,31,6285},{13,31,6285},{8,31,68},{4,31,7686},{0,31,1341},{27,31,968},{27,31,968},{27,31,968},{25,31,325},{31,21,1513},{23,31,605},{23,31,605},{11,31,0},{31,26,1513},{11,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{0,31,0},{31,31,0},{0,31,0},{16,0,9248},{16,0,9248},{16,0,9248},{16,0,9248},{12,31,3626}, -{12,31,3626},{12,31,3626},{8,31,68},{0,31,1341},{0,31,1341},{21,31,17476},{20,31,14998},{20,31,14098},{18,31,10672},{20,31,16018},{15,31,8154},{15,31,6218},{9,31,200},{10,31,11338},{0,31,1613},{28,31,1041},{27,31,801},{27,31,680},{26,31,232},{29,29,1473},{26,31,753},{24,31,442},{14,31,0},{31,28,1473},{14,31,0},{20,31,14098},{20,31,14098},{20,31,14098},{18,31,10672},{17,31,11453},{15,31,6218},{15,31,6218}, -{9,31,200},{6,31,7270},{0,31,1613},{27,31,680},{27,31,680},{27,31,680},{26,31,232},{28,28,1105},{24,31,442},{24,31,442},{14,31,0},{28,28,1105},{14,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{31,31,0},{0,31,0},{31,31,0},{0,31,0},{17,0,9248},{17,0,9248},{17,0,9248},{17,0,9248},{13,31,3929},{13,31,3929},{13,31,3929},{9,31,200},{0,31,1613}, -{0,31,1613}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_dxt1_6.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_dxt1_6.inc deleted file mode 100644 index fad45fe22..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_dxt1_6.inc +++ /dev/null @@ -1,494 +0,0 @@ -// Copyright (C) 2017-2019 Binomial LLC. All Rights Reserved. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -{0,4,18},{0,3,4},{0,2,0},{0,2,9},{0,3,36},{0,2,22},{0,2,13},{0,1,24},{0,1,41},{0,1,25},{0,4,18},{0,3,4},{0,2,0},{0,2,9},{1,1,36},{0,2,22},{0,2,13},{0,1,24},{3,0,36},{0,1,24},{0,2,0},{0,2,0},{0,2,0},{0,1,0},{0,1,2},{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{0,2,0}, -{0,2,0},{0,2,0},{0,1,0},{0,1,2},{0,1,1},{0,1,1},{0,0,4},{1,0,2},{0,0,4},{2,0,18},{0,3,4},{0,2,0},{0,2,9},{2,0,18},{4,0,18},{0,2,9},{0,1,20},{4,0,18},{0,1,20},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{1,8,38},{1,6,21},{1,4,24}, -{1,4,24},{0,8,52},{0,5,18},{0,4,1},{0,3,24},{0,4,77},{0,3,40},{2,6,22},{1,6,5},{2,4,4},{1,4,8},{4,0,52},{0,5,18},{0,4,1},{0,3,24},{8,0,52},{0,3,24},{1,6,20},{1,6,20},{1,6,20},{1,3,21},{0,6,8},{0,4,1},{0,4,1},{0,2,5},{0,3,24},{0,2,9},{2,4,4},{2,4,4},{2,4,4},{2,3,4},{3,0,8}, -{1,3,1},{1,3,1},{1,2,4},{6,0,8},{1,2,4},{5,0,18},{1,6,1},{2,4,0},{0,4,0},{5,0,18},{10,0,18},{0,4,0},{0,3,20},{10,0,18},{0,3,20},{1,0,20},{1,0,20},{1,0,20},{1,0,20},{0,5,0},{0,5,0},{0,5,0},{0,2,1},{0,2,5},{0,2,5},{3,10,38},{3,8,21},{3,6,24},{3,6,24},{2,10,52},{2,7,18},{2,6,1}, -{2,5,24},{0,7,53},{1,5,21},{4,8,22},{3,8,5},{4,6,4},{3,6,8},{7,0,52},{2,7,18},{2,6,1},{1,5,20},{14,0,52},{1,5,20},{3,8,20},{3,8,20},{3,8,20},{3,5,21},{2,8,8},{2,6,1},{2,6,1},{2,4,5},{0,6,8},{1,5,5},{4,6,4},{4,6,4},{4,6,4},{4,5,4},{6,0,8},{3,5,1},{3,5,1},{3,4,4},{12,0,8}, -{3,4,4},{8,0,18},{3,8,1},{4,6,0},{2,6,0},{8,0,18},{16,0,18},{2,6,0},{0,5,20},{16,0,18},{0,5,20},{3,0,20},{3,0,20},{3,0,20},{3,0,20},{2,7,0},{2,7,0},{2,7,0},{2,4,1},{1,5,1},{1,5,1},{5,12,38},{5,10,21},{5,8,24},{5,8,24},{4,12,52},{4,9,18},{4,8,1},{4,7,24},{2,9,53},{3,7,21},{6,10,22}, -{5,10,5},{6,8,4},{5,8,8},{2,16,51},{4,9,18},{4,8,1},{3,7,20},{20,0,51},{3,7,20},{5,10,20},{5,10,20},{5,10,20},{5,7,21},{4,10,8},{4,8,1},{4,8,1},{4,6,5},{2,8,8},{3,7,5},{6,8,4},{6,8,4},{6,8,4},{6,7,4},{9,0,8},{5,7,1},{5,7,1},{5,6,4},{18,0,8},{5,6,4},{11,0,18},{5,10,1},{6,8,0}, -{4,8,0},{11,0,18},{22,0,18},{4,8,0},{0,7,20},{22,0,18},{0,7,20},{5,0,20},{5,0,20},{5,0,20},{5,0,20},{4,9,0},{4,9,0},{4,9,0},{4,6,1},{3,7,1},{3,7,1},{7,15,36},{7,12,19},{7,10,28},{7,10,20},{6,15,52},{6,11,22},{6,10,7},{6,9,28},{3,12,52},{5,9,27},{8,13,19},{8,11,3},{8,10,3},{8,10,6},{13,1,51}, -{6,11,21},{7,10,3},{5,9,27},{27,0,51},{5,9,27},{7,12,19},{7,12,19},{7,12,19},{7,10,19},{6,13,9},{6,10,6},{6,10,6},{6,9,3},{5,10,9},{5,9,2},{8,10,2},{8,10,2},{8,10,2},{8,9,2},{12,1,8},{7,10,2},{7,10,2},{5,9,2},{25,0,8},{5,9,2},{14,1,18},{7,12,1},{8,10,2},{6,10,2},{14,1,18},{15,7,18},{6,10,2}, -{0,9,26},{15,7,18},{0,9,26},{7,0,18},{7,0,18},{7,0,18},{7,0,18},{6,11,2},{6,11,2},{6,11,2},{6,9,2},{5,9,1},{5,9,1},{9,16,38},{9,14,19},{9,12,28},{9,12,20},{8,17,52},{8,13,22},{8,12,7},{8,11,28},{5,14,52},{7,11,27},{10,15,19},{10,13,3},{10,12,3},{10,12,6},{16,1,51},{8,13,21},{9,12,3},{7,11,27},{33,0,51}, -{7,11,27},{9,14,19},{9,14,19},{9,14,19},{9,12,19},{8,15,9},{8,12,6},{8,12,6},{8,11,3},{7,12,9},{7,11,2},{10,12,2},{10,12,2},{10,12,2},{10,11,2},{15,1,8},{9,12,2},{9,12,2},{7,11,2},{31,0,8},{7,11,2},{17,0,18},{9,14,1},{10,12,2},{8,12,2},{17,0,18},{34,0,18},{8,12,2},{0,11,26},{34,0,18},{0,11,26},{9,0,18}, -{9,0,18},{9,0,18},{9,0,18},{8,13,2},{8,13,2},{8,13,2},{8,11,2},{7,11,1},{7,11,1},{11,18,38},{11,16,19},{11,14,28},{11,14,20},{10,19,52},{10,15,22},{10,14,7},{10,13,28},{7,16,52},{9,13,27},{12,16,21},{12,15,3},{12,14,3},{12,14,6},{19,1,51},{10,15,21},{11,14,3},{9,13,27},{39,0,51},{9,13,27},{11,16,18},{11,16,18},{11,16,18}, -{11,14,19},{10,17,9},{10,14,6},{10,14,6},{10,13,3},{9,14,9},{9,13,2},{12,14,2},{12,14,2},{12,14,2},{12,13,2},{15,7,8},{11,14,2},{11,14,2},{9,13,2},{31,3,8},{9,13,2},{20,0,18},{11,16,1},{12,14,2},{10,14,2},{20,0,18},{40,0,18},{10,14,2},{0,13,26},{40,0,18},{0,13,26},{11,0,18},{11,0,18},{11,0,18},{11,0,18},{10,15,2}, 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-{23,63,3650},{23,63,3650},{17,63,74},{0,63,1341},{0,63,1341},{43,63,17392},{40,63,15021},{40,63,14060},{37,63,10673},{40,63,16013},{32,63,8261},{29,63,6166},{19,63,194},{20,63,11338},{1,63,1594},{57,63,1041},{56,63,822},{54,63,697},{52,63,234},{63,51,1473},{51,63,737},{49,63,442},{28,63,1},{63,57,1473},{28,63,1},{40,63,14060},{40,63,14060},{40,63,14060},{37,63,10673},{34,63,11401},{29,63,6166},{29,63,6166}, -{19,63,194},{12,63,7270},{1,63,1594},{54,63,697},{54,63,697},{54,63,697},{52,63,234},{63,46,1105},{49,63,442},{49,63,442},{28,63,1},{63,54,1105},{28,63,1},{63,63,0},{63,63,0},{63,63,0},{63,63,0},{63,63,0},{63,63,0},{63,63,0},{0,63,0},{63,63,0},{0,63,0},{34,0,9256},{34,0,9256},{34,0,9256},{34,0,9256},{26,63,3898},{26,63,3898},{26,63,3898},{19,63,194},{1,63,1594}, -{1,63,1594}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_pvrtc2_45.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_pvrtc2_45.inc deleted file mode 100644 index fbaf988d7..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_pvrtc2_45.inc +++ /dev/null @@ -1,481 +0,0 @@ -{0,2,20},{0,1,10},{0,1,1},{0,1,9},{0,1,35},{0,1,27},{0,1,18},{0,1,61},{0,1,52},{0,0,68},{0,2,20},{0,1,10},{0,1,1},{0,1,9},{0,1,35},{0,1,27},{0,1,18},{0,1,61},{0,1,43},{0,1,61},{0,1,1},{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,1,1}, -{0,1,1},{0,1,1},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,0,4},{0,2,20},{0,1,10},{0,1,1},{0,1,9},{0,2,20},{0,1,18},{0,1,9},{0,1,36},{0,1,18},{0,1,36},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,0,0},{0,4,56},{0,3,38},{0,2,52}, -{0,2,36},{0,4,56},{0,3,35},{0,2,0},{0,2,52},{0,2,88},{0,1,78},{0,4,56},{0,3,38},{0,2,52},{0,2,36},{1,0,52},{0,3,35},{0,2,0},{0,2,52},{1,1,51},{0,2,52},{0,3,37},{0,3,37},{0,3,37},{0,2,36},{0,3,10},{0,2,0},{0,2,0},{0,1,5},{0,1,35},{0,1,14},{0,3,37},{0,3,37},{0,3,37},{0,2,36},{0,3,10}, -{0,2,0},{0,2,0},{0,1,5},{1,0,16},{0,1,5},{1,1,18},{0,3,2},{0,2,16},{0,2,0},{1,1,18},{2,0,20},{0,2,0},{0,2,36},{2,0,20},{0,2,36},{0,0,36},{0,0,36},{0,0,36},{0,0,36},{0,2,0},{0,2,0},{0,2,0},{0,1,1},{0,1,10},{0,1,10},{1,4,88},{1,3,78},{1,3,69},{1,3,77},{1,3,115},{0,4,88},{0,3,98}, -{0,3,101},{0,4,72},{0,3,38},{1,4,24},{1,3,14},{1,3,5},{1,3,13},{1,3,51},{0,4,24},{0,3,34},{0,3,37},{3,0,52},{0,3,37},{1,3,69},{1,3,69},{1,3,69},{1,2,72},{1,2,72},{1,2,72},{1,2,72},{1,2,72},{0,3,11},{0,2,24},{1,3,5},{1,3,5},{1,3,5},{1,2,8},{1,2,8},{1,2,8},{1,2,8},{1,2,8},{1,2,8}, -{1,2,8},{0,7,18},{1,3,10},{1,3,1},{0,3,9},{0,7,18},{1,3,18},{0,3,9},{0,3,36},{1,3,18},{0,3,36},{1,0,68},{1,0,68},{1,0,68},{1,0,68},{1,1,65},{1,1,65},{1,1,65},{0,3,65},{0,3,2},{0,3,2},{1,6,56},{1,5,38},{1,4,53},{1,4,37},{1,6,56},{1,5,35},{1,4,1},{1,4,66},{0,5,60},{0,4,70},{1,6,56}, 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-{5,31,424},{4,31,9713},{0,31,2930},{13,31,637},{13,31,637},{13,31,637},{12,31,365},{14,27,1105},{12,31,617},{12,31,617},{8,31,9},{13,29,1105},{8,31,9},{15,31,0},{15,31,0},{15,31,0},{15,31,0},{15,31,0},{15,31,0},{15,31,0},{0,31,0},{15,31,0},{0,31,0},{8,0,9248},{8,0,9248},{8,0,9248},{8,0,9248},{6,31,3330},{6,31,3330},{6,31,3330},{5,31,424},{0,31,2930}, -{0,31,2930}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_pvrtc2_alpha_33.inc b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_pvrtc2_alpha_33.inc deleted file mode 100644 index 3b9d7022e..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_tables_pvrtc2_alpha_33.inc +++ /dev/null @@ -1,481 +0,0 @@ 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-{6,7,2265},{6,7,1865},{5,7,1049},{7,6,4288},{5,7,2724},{5,7,1700},{1,7,9},{7,6,4272},{1,7,9},{4,7,16555},{4,7,16555},{4,7,16555},{3,7,12662},{3,7,13441},{2,7,7251},{2,7,7251},{1,7,34},{0,7,12608},{0,7,3392},{6,7,1865},{6,7,1865},{6,7,1865},{5,7,1049},{7,5,3218},{5,7,1700},{5,7,1700},{1,7,9},{6,6,3202},{1,7,9},{7,7,242},{7,7,170},{7,7,121}, -{7,7,49},{7,7,242},{7,7,98},{7,7,49},{0,7,0},{7,7,98},{0,7,0},{3,0,9298},{3,0,9298},{3,0,9298},{3,0,9298},{2,7,2210},{2,7,2210},{2,7,2210},{1,7,34},{0,6,3218},{0,6,3218},{4,7,65535},{3,7,47340},{2,7,29145},{2,7,20497},{3,7,65535},{2,7,34362},{2,7,9157},{1,7,1124},{1,7,64598},{0,7,11670},{6,7,2448},{6,7,1824},{6,7,1424},{6,7,800},{7,6,3361}, -{6,7,2321},{5,7,1313},{2,7,0},{6,7,3401},{2,7,0},{4,7,15673},{4,7,15673},{4,7,15673},{4,7,12073},{3,7,12757},{3,7,6905},{3,7,6905},{1,7,340},{1,7,11657},{0,7,2834},{6,7,1424},{6,7,1424},{6,7,1424},{6,7,800},{7,5,2525},{5,7,1313},{5,7,1313},{2,7,0},{5,7,2545},{2,7,0},{7,7,242},{7,7,170},{7,7,121},{7,7,49},{7,7,242},{7,7,98},{7,7,49}, -{0,7,0},{7,7,98},{0,7,0},{3,0,9640},{3,0,9640},{3,0,9640},{3,0,9640},{2,7,2516},{2,7,2516},{2,7,2516},{1,7,340},{0,7,2834},{0,7,2834},{4,7,65535},{3,7,44716},{3,7,27896},{2,7,21137},{4,7,65535},{3,7,31853},{2,7,8677},{2,7,784},{1,7,59734},{0,7,8694},{6,7,2192},{6,7,1568},{6,7,1168},{6,7,544},{7,6,2673},{6,7,1761},{5,7,1105},{3,7,25},{6,7,2649}, -{3,7,25},{4,7,15161},{4,7,15161},{4,7,15161},{4,7,11561},{4,7,12169},{3,7,6569},{3,7,6569},{2,7,208},{1,7,10889},{0,7,2610},{6,7,1168},{6,7,1168},{6,7,1168},{6,7,544},{6,7,1985},{5,7,1105},{5,7,1105},{3,7,25},{5,7,1985},{3,7,25},{7,7,242},{7,7,170},{7,7,121},{7,7,49},{7,7,242},{7,7,98},{7,7,49},{0,7,0},{7,7,98},{0,7,0},{4,0,9536}, -{4,0,9536},{4,0,9536},{4,0,9536},{2,7,3060},{2,7,3060},{2,7,3060},{2,7,208},{0,7,2610},{0,7,2610},{4,7,63766},{3,7,42860},{3,7,26040},{3,7,20188},{4,7,60070},{3,7,29085},{2,7,8965},{2,7,336},{1,7,55638},{0,7,6486},{7,7,1686},{6,7,1440},{6,7,1040},{6,7,416},{7,6,2113},{6,7,1329},{6,7,929},{3,7,9},{6,7,2025},{3,7,9},{4,7,14905},{4,7,14905},{4,7,14905}, -{4,7,11305},{4,7,11209},{3,7,6489},{3,7,6489},{2,7,272},{1,7,10377},{0,7,2642},{6,7,1040},{6,7,1040},{6,7,1040},{6,7,416},{7,6,1537},{6,7,929},{6,7,929},{3,7,9},{7,6,1513},{3,7,9},{7,7,242},{7,7,170},{7,7,121},{7,7,49},{7,7,242},{7,7,98},{7,7,49},{0,7,0},{7,7,98},{0,7,0},{4,0,9280},{4,0,9280},{4,0,9280},{4,0,9280},{3,7,3125}, -{3,7,3125},{3,7,3125},{2,7,272},{0,7,2642},{0,7,2642},{4,7,59414},{4,7,41414},{3,7,24952},{3,7,19100},{4,7,55014},{3,7,27085},{2,7,10021},{2,7,656},{1,7,52310},{0,7,5046},{7,7,1142},{7,7,1070},{7,7,1021},{6,7,416},{7,7,1538},{6,7,1025},{6,7,625},{4,7,4},{6,7,1529},{4,7,4},{5,7,13964},{5,7,13964},{5,7,13964},{4,7,11305},{4,7,10505},{3,7,6665},{3,7,6665}, -{2,7,592},{2,7,9973},{0,7,2930},{7,7,1021},{7,7,1021},{7,7,1021},{6,7,416},{7,6,1105},{6,7,625},{6,7,625},{4,7,4},{6,7,1129},{4,7,4},{7,7,242},{7,7,170},{7,7,121},{7,7,49},{7,7,242},{7,7,98},{7,7,49},{0,7,0},{7,7,98},{0,7,0},{4,0,9280},{4,0,9280},{4,0,9280},{4,0,9280},{3,7,3301},{3,7,3301},{3,7,3301},{2,7,592},{0,7,2930}, -{0,7,2930}, diff --git a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_uastc.h b/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_uastc.h deleted file mode 100644 index f91314f4f..000000000 --- a/WickedEngine/Utility/basis_universal/transcoder/basisu_transcoder_uastc.h +++ /dev/null @@ -1,293 +0,0 @@ -// basisu_transcoder_uastc.h -#pragma once -#include "basisu_transcoder_internal.h" - -namespace basist -{ - struct color_quad_u8 - { - uint8_t m_c[4]; - }; - - const uint32_t TOTAL_UASTC_MODES = 19; - const uint32_t UASTC_MODE_INDEX_SOLID_COLOR = 8; - - const uint32_t TOTAL_ASTC_BC7_COMMON_PARTITIONS2 = 30; - const uint32_t TOTAL_ASTC_BC7_COMMON_PARTITIONS3 = 11; - const uint32_t TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS = 19; - - extern const uint8_t g_uastc_mode_weight_bits[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_weight_ranges[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_endpoint_ranges[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_subsets[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_planes[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_comps[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_has_etc1_bias[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_has_bc1_hint0[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_has_bc1_hint1[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_has_alpha[TOTAL_UASTC_MODES]; - extern const uint8_t g_uastc_mode_is_la[TOTAL_UASTC_MODES]; - - struct astc_bc7_common_partition2_desc - { - uint8_t m_bc7; - uint16_t m_astc; - bool m_invert; - }; - - extern const astc_bc7_common_partition2_desc g_astc_bc7_common_partitions2[TOTAL_ASTC_BC7_COMMON_PARTITIONS2]; - - struct bc73_astc2_common_partition_desc - { - uint8_t m_bc73; - uint16_t m_astc2; - uint8_t k; // 0-5 - how to modify the BC7 3-subset pattern to match the ASTC pattern (LSB=invert) - }; - - extern const bc73_astc2_common_partition_desc g_bc7_3_astc2_common_partitions[TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS]; - - struct astc_bc7_common_partition3_desc - { - uint8_t m_bc7; - uint16_t m_astc; - uint8_t m_astc_to_bc7_perm; // converts ASTC to BC7 partition using g_astc_bc7_partition_index_perm_tables[][] - }; - - extern const astc_bc7_common_partition3_desc g_astc_bc7_common_partitions3[TOTAL_ASTC_BC7_COMMON_PARTITIONS3]; - - extern const uint8_t g_astc_bc7_patterns2[TOTAL_ASTC_BC7_COMMON_PARTITIONS2][16]; - extern const uint8_t g_astc_bc7_patterns3[TOTAL_ASTC_BC7_COMMON_PARTITIONS3][16]; - extern const uint8_t g_bc7_3_astc2_patterns2[TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS][16]; - - extern const uint8_t g_astc_bc7_pattern2_anchors[TOTAL_ASTC_BC7_COMMON_PARTITIONS2][3]; - extern const uint8_t g_astc_bc7_pattern3_anchors[TOTAL_ASTC_BC7_COMMON_PARTITIONS3][3]; - extern const uint8_t g_bc7_3_astc2_patterns2_anchors[TOTAL_BC7_3_ASTC2_COMMON_PARTITIONS][3]; - - extern const uint32_t g_uastc_mode_huff_codes[TOTAL_UASTC_MODES + 1][2]; - - extern const uint8_t g_astc_to_bc7_partition_index_perm_tables[6][3]; - extern const uint8_t g_bc7_to_astc_partition_index_perm_tables[6][3]; // inverse of g_astc_to_bc7_partition_index_perm_tables - - extern const uint8_t* s_uastc_to_bc1_weights[6]; - - uint32_t bc7_convert_partition_index_3_to_2(uint32_t p, uint32_t k); - - inline uint32_t astc_interpolate(uint32_t l, uint32_t h, uint32_t w, bool srgb) - { - if (srgb) - { - l = (l << 8) | 0x80; - h = (h << 8) | 0x80; - } - else - { - l = (l << 8) | l; - h = (h << 8) | h; - } - - uint32_t k = (l * (64 - w) + h * w + 32) >> 6; - - return k >> 8; - } - - struct astc_block_desc - { - int m_weight_range; // weight BISE range - - int m_subsets; // number of ASTC partitions - int m_partition_seed; // partition pattern seed - int m_cem; // color endpoint mode used by all subsets - - int m_ccs; // color component selector (dual plane only) - bool m_dual_plane; // true if dual plane - - // Weight and endpoint BISE values. - // Note these values are NOT linear, they must be BISE encoded. See Table 97 and Table 107. - uint8_t m_endpoints[18]; // endpoint values, in RR GG BB etc. order - uint8_t m_weights[64]; // weight index values, raster order, in P0 P1, P0 P1, etc. or P0, P0, P0, P0, etc. order - }; - - const uint32_t BC7ENC_TOTAL_ASTC_RANGES = 21; - - // See tables 81, 93, 18.13.Endpoint Unquantization - const uint32_t TOTAL_ASTC_RANGES = 21; - extern const int g_astc_bise_range_table[TOTAL_ASTC_RANGES][3]; - - struct astc_quant_bin - { - uint8_t m_unquant; // unquantized value - uint8_t m_index; // sorted index - }; - - extern astc_quant_bin g_astc_unquant[BC7ENC_TOTAL_ASTC_RANGES][256]; // [ASTC encoded endpoint index] - - int astc_get_levels(int range); - bool astc_is_valid_endpoint_range(uint32_t range); - uint32_t unquant_astc_endpoint(uint32_t packed_bits, uint32_t packed_trits, uint32_t packed_quints, uint32_t range); - uint32_t unquant_astc_endpoint_val(uint32_t packed_val, uint32_t range); - - const uint8_t* get_anchor_indices(uint32_t subsets, uint32_t mode, uint32_t common_pattern, const uint8_t*& pPartition_pattern); - - // BC7 - const uint32_t BC7ENC_BLOCK_SIZE = 16; - - struct bc7_block - { - uint64_t m_qwords[2]; - }; - - struct bc7_optimization_results - { - uint32_t m_mode; - uint32_t m_partition; - uint8_t m_selectors[16]; - uint8_t m_alpha_selectors[16]; - color_quad_u8 m_low[3]; - color_quad_u8 m_high[3]; - uint32_t m_pbits[3][2]; - uint32_t m_index_selector; - uint32_t m_rotation; - }; - - extern const uint32_t g_bc7_weights1[2]; - extern const uint32_t g_bc7_weights2[4]; - extern const uint32_t g_bc7_weights3[8]; - extern const uint32_t g_bc7_weights4[16]; - extern const uint32_t g_astc_weights4[16]; - extern const uint32_t g_astc_weights5[32]; - extern const uint32_t g_astc_weights_3levels[3]; - extern const uint8_t g_bc7_partition1[16]; - extern const uint8_t g_bc7_partition2[64 * 16]; - extern const uint8_t g_bc7_partition3[64 * 16]; - extern const uint8_t g_bc7_table_anchor_index_second_subset[64]; - extern const uint8_t g_bc7_table_anchor_index_third_subset_1[64]; - extern const uint8_t g_bc7_table_anchor_index_third_subset_2[64]; - extern const uint8_t g_bc7_num_subsets[8]; - extern const uint8_t g_bc7_partition_bits[8]; - extern const uint8_t g_bc7_color_index_bitcount[8]; - extern const uint8_t g_bc7_mode_has_p_bits[8]; - extern const uint8_t g_bc7_mode_has_shared_p_bits[8]; - extern const uint8_t g_bc7_color_precision_table[8]; - extern const int8_t g_bc7_alpha_precision_table[8]; - extern const uint8_t g_bc7_alpha_index_bitcount[8]; - - inline bool get_bc7_mode_has_seperate_alpha_selectors(int mode) { return (mode == 4) || (mode == 5); } - inline int get_bc7_color_index_size(int mode, int index_selection_bit) { return g_bc7_color_index_bitcount[mode] + index_selection_bit; } - inline int get_bc7_alpha_index_size(int mode, int index_selection_bit) { return g_bc7_alpha_index_bitcount[mode] - index_selection_bit; } - - struct endpoint_err - { - uint16_t m_error; uint8_t m_lo; uint8_t m_hi; - }; - - extern endpoint_err g_bc7_mode_6_optimal_endpoints[256][2]; // [c][pbit] - const uint32_t BC7ENC_MODE_6_OPTIMAL_INDEX = 5; - - extern endpoint_err g_bc7_mode_5_optimal_endpoints[256]; // [c] - const uint32_t BC7ENC_MODE_5_OPTIMAL_INDEX = 1; - - // Packs a BC7 block from a high-level description. Handles all BC7 modes. - void encode_bc7_block(void* pBlock, const bc7_optimization_results* pResults); - - // Packs an ASTC block - // Constraints: Always 4x4, all subset CEM's must be equal, only tested with LDR CEM's. - bool pack_astc_block(uint32_t* pDst, const astc_block_desc* pBlock, uint32_t mode); - - void pack_astc_solid_block(void* pDst_block, const color32& color); - -#ifdef _DEBUG - int astc_compute_texel_partition(int seed, int x, int y, int z, int partitioncount, bool small_block); -#endif - - struct uastc_block - { - union - { - uint8_t m_bytes[16]; - uint32_t m_dwords[4]; - }; - }; - - struct unpacked_uastc_block - { - astc_block_desc m_astc; - - uint32_t m_mode; - uint32_t m_common_pattern; - - color32 m_solid_color; - - bool m_bc1_hint0; - bool m_bc1_hint1; - - bool m_etc1_flip; - bool m_etc1_diff; - uint32_t m_etc1_inten0; - uint32_t m_etc1_inten1; - - uint32_t m_etc1_bias; - - uint32_t m_etc2_hints; - - uint32_t m_etc1_selector; - uint32_t m_etc1_r, m_etc1_g, m_etc1_b; - }; - - color32 apply_etc1_bias(const color32 &block_color, uint32_t bias, uint32_t limit, uint32_t subblock); - - struct decoder_etc_block; - struct eac_block; - - bool unpack_uastc(uint32_t mode, uint32_t common_pattern, const color32& solid_color, const astc_block_desc& astc, color32* pPixels, bool srgb); - bool unpack_uastc(const unpacked_uastc_block& unpacked_blk, color32* pPixels, bool srgb); - - bool unpack_uastc(const uastc_block& blk, color32* pPixels, bool srgb); - bool unpack_uastc(const uastc_block& blk, unpacked_uastc_block& unpacked, bool undo_blue_contract, bool read_hints = true); - - bool transcode_uastc_to_astc(const uastc_block& src_blk, void* pDst); - - bool transcode_uastc_to_bc7(const unpacked_uastc_block& unpacked_src_blk, bc7_optimization_results& dst_blk); - bool transcode_uastc_to_bc7(const uastc_block& src_blk, bc7_optimization_results& dst_blk); - bool transcode_uastc_to_bc7(const uastc_block& src_blk, void* pDst); - - void transcode_uastc_to_etc1(unpacked_uastc_block& unpacked_src_blk, color32 block_pixels[4][4], void* pDst); - bool transcode_uastc_to_etc1(const uastc_block& src_blk, void* pDst); - bool transcode_uastc_to_etc1(const uastc_block& src_blk, void* pDst, uint32_t channel); - - void transcode_uastc_to_etc2_eac_a8(unpacked_uastc_block& unpacked_src_blk, color32 block_pixels[4][4], void* pDst); - bool transcode_uastc_to_etc2_rgba(const uastc_block& src_blk, void* pDst); - - // Packs 16 scalar values to BC4. Same PSNR as stb_dxt's BC4 encoder, around 13% faster. - void encode_bc4(void* pDst, const uint8_t* pPixels, uint32_t stride); - - void encode_bc1_solid_block(void* pDst, uint32_t fr, uint32_t fg, uint32_t fb); - - enum - { - cEncodeBC1HighQuality = 1, - cEncodeBC1HigherQuality = 2, - cEncodeBC1UseSelectors = 4, - }; - void encode_bc1(void* pDst, const uint8_t* pPixels, uint32_t flags); - - // Alternate PCA-free encoder, around 15% faster, same (or slightly higher) avg. PSNR - void encode_bc1_alt(void* pDst, const uint8_t* pPixels, uint32_t flags); - - void transcode_uastc_to_bc1_hint0(const unpacked_uastc_block& unpacked_src_blk, void* pDst); - void transcode_uastc_to_bc1_hint1(const unpacked_uastc_block& unpacked_src_blk, const color32 block_pixels[4][4], void* pDst, bool high_quality); - - bool transcode_uastc_to_bc1(const uastc_block& src_blk, void* pDst, bool high_quality); - bool transcode_uastc_to_bc3(const uastc_block& src_blk, void* pDst, bool high_quality); - bool transcode_uastc_to_bc4(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0); - bool transcode_uastc_to_bc5(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0, uint32_t chan1); - - bool transcode_uastc_to_etc2_eac_r11(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0); - bool transcode_uastc_to_etc2_eac_rg11(const uastc_block& src_blk, void* pDst, bool high_quality, uint32_t chan0, uint32_t chan1); - - bool transcode_uastc_to_pvrtc1_4_rgb(const uastc_block* pSrc_blocks, void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, bool high_quality, bool from_alpha); - bool transcode_uastc_to_pvrtc1_4_rgba(const uastc_block* pSrc_blocks, void* pDst_blocks, uint32_t num_blocks_x, uint32_t num_blocks_y, bool high_quality); - - // uastc_init() MUST be called before using this module. - void uastc_init(); - -} // namespace basist diff --git a/WickedEngine/Utility/basis_universal/zstd/zstddeclib.c b/WickedEngine/Utility/basis_universal/zstd/zstddeclib.c deleted file mode 100644 index e06ad172d..000000000 --- a/WickedEngine/Utility/basis_universal/zstd/zstddeclib.c +++ /dev/null @@ -1,15033 +0,0 @@ -/** - * \file zstddeclib.c - * Single-file Zstandard decompressor. - * - * Generate using: - * \code - * combine.sh -r ../../lib -o zstddeclib.c zstddeclib-in.c - * \endcode - */ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ -/* - * Settings to bake for the standalone decompressor. - * - * Note: It's important that none of these affects 'zstd.h' (only the - * implementation files we're amalgamating). - * - * Note: MEM_MODULE stops xxhash redefining BYTE, U16, etc., which are also - * defined in mem.h (breaking C99 compatibility). - * - * Note: the undefs for xxHash allow Zstd's implementation to coinside with with - * standalone xxHash usage (with global defines). - */ -#define DEBUGLEVEL 0 -#define MEM_MODULE -#undef XXH_NAMESPACE -#define XXH_NAMESPACE ZSTD_ -#undef XXH_PRIVATE_API -#define XXH_PRIVATE_API -#undef XXH_INLINE_ALL -#define XXH_INLINE_ALL -#define ZSTD_LEGACY_SUPPORT 0 -#define ZSTD_STRIP_ERROR_STRINGS -#define ZSTD_TRACE 0 - -/* Include zstd_deps.h first with all the options we need enabled. */ -#define ZSTD_DEPS_NEED_MALLOC -/**** start inlining common/zstd_deps.h ****/ -/* - * Copyright (c) 2016-2021, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* This file provides common libc dependencies that zstd requires. - * The purpose is to allow replacing this file with a custom implementation - * to compile zstd without libc support. - */ - -/* Need: - * NULL - * INT_MAX - * UINT_MAX - * ZSTD_memcpy() - * ZSTD_memset() - * ZSTD_memmove() - */ -#ifndef ZSTD_DEPS_COMMON -#define ZSTD_DEPS_COMMON - -#include -#include -#include - -#if defined(__GNUC__) && __GNUC__ >= 4 -# define ZSTD_memcpy(d,s,l) __builtin_memcpy((d),(s),(l)) -# define ZSTD_memmove(d,s,l) __builtin_memmove((d),(s),(l)) -# define ZSTD_memset(p,v,l) __builtin_memset((p),(v),(l)) -#else -# define ZSTD_memcpy(d,s,l) memcpy((d),(s),(l)) -# define ZSTD_memmove(d,s,l) memmove((d),(s),(l)) -# define ZSTD_memset(p,v,l) memset((p),(v),(l)) -#endif - -#endif /* ZSTD_DEPS_COMMON */ - -/* Need: - * ZSTD_malloc() - * ZSTD_free() - * ZSTD_calloc() - */ -#ifdef ZSTD_DEPS_NEED_MALLOC -#ifndef ZSTD_DEPS_MALLOC -#define ZSTD_DEPS_MALLOC - -#include - -#define ZSTD_malloc(s) malloc(s) -#define ZSTD_calloc(n,s) calloc((n), (s)) -#define ZSTD_free(p) free((p)) - -#endif /* ZSTD_DEPS_MALLOC */ -#endif /* ZSTD_DEPS_NEED_MALLOC */ - -/* - * Provides 64-bit math support. - * Need: - * U64 ZSTD_div64(U64 dividend, U32 divisor) - */ -#ifdef ZSTD_DEPS_NEED_MATH64 -#ifndef ZSTD_DEPS_MATH64 -#define ZSTD_DEPS_MATH64 - -#define ZSTD_div64(dividend, divisor) ((dividend) / (divisor)) - -#endif /* ZSTD_DEPS_MATH64 */ -#endif /* ZSTD_DEPS_NEED_MATH64 */ - -/* Need: - * assert() - */ -#ifdef ZSTD_DEPS_NEED_ASSERT -#ifndef ZSTD_DEPS_ASSERT -#define ZSTD_DEPS_ASSERT - -#include - -#endif /* ZSTD_DEPS_ASSERT */ -#endif /* ZSTD_DEPS_NEED_ASSERT */ - -/* Need: - * ZSTD_DEBUG_PRINT() - */ -#ifdef ZSTD_DEPS_NEED_IO -#ifndef ZSTD_DEPS_IO -#define ZSTD_DEPS_IO - -#include -#define ZSTD_DEBUG_PRINT(...) fprintf(stderr, __VA_ARGS__) - -#endif /* ZSTD_DEPS_IO */ -#endif /* ZSTD_DEPS_NEED_IO */ - -/* Only requested when is known to be present. - * Need: - * intptr_t - */ -#ifdef ZSTD_DEPS_NEED_STDINT -#ifndef ZSTD_DEPS_STDINT -#define ZSTD_DEPS_STDINT - -#include - -#endif /* ZSTD_DEPS_STDINT */ -#endif /* ZSTD_DEPS_NEED_STDINT */ -/**** ended inlining common/zstd_deps.h ****/ - -/**** start inlining common/debug.c ****/ -/* ****************************************************************** - * debug - * Part of FSE library - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -/* - * This module only hosts one global variable - * which can be used to dynamically influence the verbosity of traces, - * such as DEBUGLOG and RAWLOG - */ - -/**** start inlining debug.h ****/ -/* ****************************************************************** - * debug - * Part of FSE library - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -/* - * The purpose of this header is to enable debug functions. - * They regroup assert(), DEBUGLOG() and RAWLOG() for run-time, - * and DEBUG_STATIC_ASSERT() for compile-time. - * - * By default, DEBUGLEVEL==0, which means run-time debug is disabled. - * - * Level 1 enables assert() only. - * Starting level 2, traces can be generated and pushed to stderr. - * The higher the level, the more verbose the traces. - * - * It's possible to dynamically adjust level using variable g_debug_level, - * which is only declared if DEBUGLEVEL>=2, - * and is a global variable, not multi-thread protected (use with care) - */ - -#ifndef DEBUG_H_12987983217 -#define DEBUG_H_12987983217 - -#if defined (__cplusplus) -extern "C" { -#endif - - -/* static assert is triggered at compile time, leaving no runtime artefact. - * static assert only works with compile-time constants. - * Also, this variant can only be used inside a function. */ -#define DEBUG_STATIC_ASSERT(c) (void)sizeof(char[(c) ? 1 : -1]) - - -/* DEBUGLEVEL is expected to be defined externally, - * typically through compiler command line. - * Value must be a number. */ -#ifndef DEBUGLEVEL -# define DEBUGLEVEL 0 -#endif - - -/* recommended values for DEBUGLEVEL : - * 0 : release mode, no debug, all run-time checks disabled - * 1 : enables assert() only, no display - * 2 : reserved, for currently active debug path - * 3 : events once per object lifetime (CCtx, CDict, etc.) - * 4 : events once per frame - * 5 : events once per block - * 6 : events once per sequence (verbose) - * 7+: events at every position (*very* verbose) - * - * It's generally inconvenient to output traces > 5. - * In which case, it's possible to selectively trigger high verbosity levels - * by modifying g_debug_level. - */ - -#if (DEBUGLEVEL>=1) -# define ZSTD_DEPS_NEED_ASSERT -/**** skipping file: zstd_deps.h ****/ -#else -# ifndef assert /* assert may be already defined, due to prior #include */ -# define assert(condition) ((void)0) /* disable assert (default) */ -# endif -#endif - -#if (DEBUGLEVEL>=2) -# define ZSTD_DEPS_NEED_IO -/**** skipping file: zstd_deps.h ****/ -extern int g_debuglevel; /* the variable is only declared, - it actually lives in debug.c, - and is shared by the whole process. - It's not thread-safe. - It's useful when enabling very verbose levels - on selective conditions (such as position in src) */ - -# define RAWLOG(l, ...) { \ - if (l<=g_debuglevel) { \ - ZSTD_DEBUG_PRINT(__VA_ARGS__); \ - } } -# define DEBUGLOG(l, ...) { \ - if (l<=g_debuglevel) { \ - ZSTD_DEBUG_PRINT(__FILE__ ": " __VA_ARGS__); \ - ZSTD_DEBUG_PRINT(" \n"); \ - } } -#else -# define RAWLOG(l, ...) {} /* disabled */ -# define DEBUGLOG(l, ...) {} /* disabled */ -#endif - - -#if defined (__cplusplus) -} -#endif - -#endif /* DEBUG_H_12987983217 */ -/**** ended inlining debug.h ****/ - -int g_debuglevel = DEBUGLEVEL; -/**** ended inlining common/debug.c ****/ -/**** start inlining common/entropy_common.c ****/ -/* ****************************************************************** - * Common functions of New Generation Entropy library - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - FSE+HUF source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - Public forum : https://groups.google.com/forum/#!forum/lz4c - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - -/* ************************************* -* Dependencies -***************************************/ -/**** start inlining mem.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef MEM_H_MODULE -#define MEM_H_MODULE - -#if defined (__cplusplus) -extern "C" { -#endif - -/*-**************************************** -* Dependencies -******************************************/ -#include /* size_t, ptrdiff_t */ -/**** start inlining compiler.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_COMPILER_H -#define ZSTD_COMPILER_H - -/*-******************************************************* -* Compiler specifics -*********************************************************/ -/* force inlining */ - -#if !defined(ZSTD_NO_INLINE) -#if (defined(__GNUC__) && !defined(__STRICT_ANSI__)) || defined(__cplusplus) || defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L /* C99 */ -# define INLINE_KEYWORD inline -#else -# define INLINE_KEYWORD -#endif - -#if defined(__GNUC__) || defined(__ICCARM__) -# define FORCE_INLINE_ATTR __attribute__((always_inline)) -#elif defined(_MSC_VER) -# define FORCE_INLINE_ATTR __forceinline -#else -# define FORCE_INLINE_ATTR -#endif - -#else - -#define INLINE_KEYWORD -#define FORCE_INLINE_ATTR - -#endif - -/** - On MSVC qsort requires that functions passed into it use the __cdecl calling conversion(CC). - This explictly marks such functions as __cdecl so that the code will still compile - if a CC other than __cdecl has been made the default. -*/ -#if defined(_MSC_VER) -# define WIN_CDECL __cdecl -#else -# define WIN_CDECL -#endif - -/** - * FORCE_INLINE_TEMPLATE is used to define C "templates", which take constant - * parameters. They must be inlined for the compiler to eliminate the constant - * branches. - */ -#define FORCE_INLINE_TEMPLATE static INLINE_KEYWORD FORCE_INLINE_ATTR -/** - * HINT_INLINE is used to help the compiler generate better code. It is *not* - * used for "templates", so it can be tweaked based on the compilers - * performance. - * - * gcc-4.8 and gcc-4.9 have been shown to benefit from leaving off the - * always_inline attribute. - * - * clang up to 5.0.0 (trunk) benefit tremendously from the always_inline - * attribute. - */ -#if !defined(__clang__) && defined(__GNUC__) && __GNUC__ >= 4 && __GNUC_MINOR__ >= 8 && __GNUC__ < 5 -# define HINT_INLINE static INLINE_KEYWORD -#else -# define HINT_INLINE static INLINE_KEYWORD FORCE_INLINE_ATTR -#endif - -/* UNUSED_ATTR tells the compiler it is okay if the function is unused. */ -#if defined(__GNUC__) -# define UNUSED_ATTR __attribute__((unused)) -#else -# define UNUSED_ATTR -#endif - -/* force no inlining */ -#ifdef _MSC_VER -# define FORCE_NOINLINE static __declspec(noinline) -#else -# if defined(__GNUC__) || defined(__ICCARM__) -# define FORCE_NOINLINE static __attribute__((__noinline__)) -# else -# define FORCE_NOINLINE static -# endif -#endif - - -/* target attribute */ -#ifndef __has_attribute - #define __has_attribute(x) 0 /* Compatibility with non-clang compilers. */ -#endif -#if defined(__GNUC__) || defined(__ICCARM__) -# define TARGET_ATTRIBUTE(target) __attribute__((__target__(target))) -#else -# define TARGET_ATTRIBUTE(target) -#endif - -/* Enable runtime BMI2 dispatch based on the CPU. - * Enabled for clang & gcc >=4.8 on x86 when BMI2 isn't enabled by default. - */ -#ifndef DYNAMIC_BMI2 - #if ((defined(__clang__) && __has_attribute(__target__)) \ - || (defined(__GNUC__) \ - && (__GNUC__ >= 5 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)))) \ - && (defined(__x86_64__) || defined(_M_X86)) \ - && !defined(__BMI2__) - # define DYNAMIC_BMI2 1 - #else - # define DYNAMIC_BMI2 0 - #endif -#endif - -/* prefetch - * can be disabled, by declaring NO_PREFETCH build macro */ -#if defined(NO_PREFETCH) -# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */ -# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */ -#else -# if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_I86)) /* _mm_prefetch() is not defined outside of x86/x64 */ -# include /* https://msdn.microsoft.com/fr-fr/library/84szxsww(v=vs.90).aspx */ -# define PREFETCH_L1(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T0) -# define PREFETCH_L2(ptr) _mm_prefetch((const char*)(ptr), _MM_HINT_T1) -# elif defined(__GNUC__) && ( (__GNUC__ >= 4) || ( (__GNUC__ == 3) && (__GNUC_MINOR__ >= 1) ) ) -# define PREFETCH_L1(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 3 /* locality */) -# define PREFETCH_L2(ptr) __builtin_prefetch((ptr), 0 /* rw==read */, 2 /* locality */) -# elif defined(__aarch64__) -# define PREFETCH_L1(ptr) __asm__ __volatile__("prfm pldl1keep, %0" ::"Q"(*(ptr))) -# define PREFETCH_L2(ptr) __asm__ __volatile__("prfm pldl2keep, %0" ::"Q"(*(ptr))) -# else -# define PREFETCH_L1(ptr) (void)(ptr) /* disabled */ -# define PREFETCH_L2(ptr) (void)(ptr) /* disabled */ -# endif -#endif /* NO_PREFETCH */ - -#define CACHELINE_SIZE 64 - -#define PREFETCH_AREA(p, s) { \ - const char* const _ptr = (const char*)(p); \ - size_t const _size = (size_t)(s); \ - size_t _pos; \ - for (_pos=0; _pos<_size; _pos+=CACHELINE_SIZE) { \ - PREFETCH_L2(_ptr + _pos); \ - } \ -} - -/* vectorization - * older GCC (pre gcc-4.3 picked as the cutoff) uses a different syntax */ -#if !defined(__INTEL_COMPILER) && !defined(__clang__) && defined(__GNUC__) -# if (__GNUC__ == 4 && __GNUC_MINOR__ > 3) || (__GNUC__ >= 5) -# define DONT_VECTORIZE __attribute__((optimize("no-tree-vectorize"))) -# else -# define DONT_VECTORIZE _Pragma("GCC optimize(\"no-tree-vectorize\")") -# endif -#else -# define DONT_VECTORIZE -#endif - -/* Tell the compiler that a branch is likely or unlikely. - * Only use these macros if it causes the compiler to generate better code. - * If you can remove a LIKELY/UNLIKELY annotation without speed changes in gcc - * and clang, please do. - */ -#if defined(__GNUC__) -#define LIKELY(x) (__builtin_expect((x), 1)) -#define UNLIKELY(x) (__builtin_expect((x), 0)) -#else -#define LIKELY(x) (x) -#define UNLIKELY(x) (x) -#endif - -/* disable warnings */ -#ifdef _MSC_VER /* Visual Studio */ -# include /* For Visual 2005 */ -# pragma warning(disable : 4100) /* disable: C4100: unreferenced formal parameter */ -# pragma warning(disable : 4127) /* disable: C4127: conditional expression is constant */ -# pragma warning(disable : 4204) /* disable: C4204: non-constant aggregate initializer */ -# pragma warning(disable : 4214) /* disable: C4214: non-int bitfields */ -# pragma warning(disable : 4324) /* disable: C4324: padded structure */ -#endif - -/*Like DYNAMIC_BMI2 but for compile time determination of BMI2 support*/ -#ifndef STATIC_BMI2 -# if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_I86)) -# ifdef __AVX2__ //MSVC does not have a BMI2 specific flag, but every CPU that supports AVX2 also supports BMI2 -# define STATIC_BMI2 1 -# endif -# endif -#endif - -#ifndef STATIC_BMI2 - #define STATIC_BMI2 0 -#endif - -/* compat. with non-clang compilers */ -#ifndef __has_builtin -# define __has_builtin(x) 0 -#endif - -/* compat. with non-clang compilers */ -#ifndef __has_feature -# define __has_feature(x) 0 -#endif - -/* detects whether we are being compiled under msan */ -#ifndef ZSTD_MEMORY_SANITIZER -# if __has_feature(memory_sanitizer) -# define ZSTD_MEMORY_SANITIZER 1 -# else -# define ZSTD_MEMORY_SANITIZER 0 -# endif -#endif - -#if ZSTD_MEMORY_SANITIZER -/* Not all platforms that support msan provide sanitizers/msan_interface.h. - * We therefore declare the functions we need ourselves, rather than trying to - * include the header file... */ -#include /* size_t */ -#define ZSTD_DEPS_NEED_STDINT -/**** skipping file: zstd_deps.h ****/ - -/* Make memory region fully initialized (without changing its contents). */ -void __msan_unpoison(const volatile void *a, size_t size); - -/* Make memory region fully uninitialized (without changing its contents). - This is a legacy interface that does not update origin information. Use - __msan_allocated_memory() instead. */ -void __msan_poison(const volatile void *a, size_t size); - -/* Returns the offset of the first (at least partially) poisoned byte in the - memory range, or -1 if the whole range is good. */ -intptr_t __msan_test_shadow(const volatile void *x, size_t size); -#endif - -/* detects whether we are being compiled under asan */ -#ifndef ZSTD_ADDRESS_SANITIZER -# if __has_feature(address_sanitizer) -# define ZSTD_ADDRESS_SANITIZER 1 -# elif defined(__SANITIZE_ADDRESS__) -# define ZSTD_ADDRESS_SANITIZER 1 -# else -# define ZSTD_ADDRESS_SANITIZER 0 -# endif -#endif - -#if ZSTD_ADDRESS_SANITIZER -/* Not all platforms that support asan provide sanitizers/asan_interface.h. - * We therefore declare the functions we need ourselves, rather than trying to - * include the header file... */ -#include /* size_t */ - -/** - * Marks a memory region ([addr, addr+size)) as unaddressable. - * - * This memory must be previously allocated by your program. Instrumented - * code is forbidden from accessing addresses in this region until it is - * unpoisoned. This function is not guaranteed to poison the entire region - - * it could poison only a subregion of [addr, addr+size) due to ASan - * alignment restrictions. - * - * \note This function is not thread-safe because no two threads can poison or - * unpoison memory in the same memory region simultaneously. - * - * \param addr Start of memory region. - * \param size Size of memory region. */ -void __asan_poison_memory_region(void const volatile *addr, size_t size); - -/** - * Marks a memory region ([addr, addr+size)) as addressable. - * - * This memory must be previously allocated by your program. Accessing - * addresses in this region is allowed until this region is poisoned again. - * This function could unpoison a super-region of [addr, addr+size) due - * to ASan alignment restrictions. - * - * \note This function is not thread-safe because no two threads can - * poison or unpoison memory in the same memory region simultaneously. - * - * \param addr Start of memory region. - * \param size Size of memory region. */ -void __asan_unpoison_memory_region(void const volatile *addr, size_t size); -#endif - -#endif /* ZSTD_COMPILER_H */ -/**** ended inlining compiler.h ****/ -/**** skipping file: debug.h ****/ -/**** skipping file: zstd_deps.h ****/ - - -/*-**************************************** -* Compiler specifics -******************************************/ -#if defined(_MSC_VER) /* Visual Studio */ -# include /* _byteswap_ulong */ -# include /* _byteswap_* */ -#endif -#if defined(__GNUC__) -# define MEM_STATIC static __inline __attribute__((unused)) -#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) -# define MEM_STATIC static inline -#elif defined(_MSC_VER) -# define MEM_STATIC static __inline -#else -# define MEM_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */ -#endif - -/*-************************************************************** -* Basic Types -*****************************************************************/ -#if !defined (__VMS) && (defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) ) -# if defined(_AIX) -# include -# else -# include /* intptr_t */ -# endif - typedef uint8_t BYTE; - typedef uint16_t U16; - typedef int16_t S16; - typedef uint32_t U32; - typedef int32_t S32; - typedef uint64_t U64; - typedef int64_t S64; -#else -# include -#if CHAR_BIT != 8 -# error "this implementation requires char to be exactly 8-bit type" -#endif - typedef unsigned char BYTE; -#if USHRT_MAX != 65535 -# error "this implementation requires short to be exactly 16-bit type" -#endif - typedef unsigned short U16; - typedef signed short S16; -#if UINT_MAX != 4294967295 -# error "this implementation requires int to be exactly 32-bit type" -#endif - typedef unsigned int U32; - typedef signed int S32; -/* note : there are no limits defined for long long type in C90. - * limits exist in C99, however, in such case, is preferred */ - typedef unsigned long long U64; - typedef signed long long S64; -#endif - - -/*-************************************************************** -* Memory I/O API -*****************************************************************/ -/*=== Static platform detection ===*/ -MEM_STATIC unsigned MEM_32bits(void); -MEM_STATIC unsigned MEM_64bits(void); -MEM_STATIC unsigned MEM_isLittleEndian(void); - -/*=== Native unaligned read/write ===*/ -MEM_STATIC U16 MEM_read16(const void* memPtr); -MEM_STATIC U32 MEM_read32(const void* memPtr); -MEM_STATIC U64 MEM_read64(const void* memPtr); -MEM_STATIC size_t MEM_readST(const void* memPtr); - -MEM_STATIC void MEM_write16(void* memPtr, U16 value); -MEM_STATIC void MEM_write32(void* memPtr, U32 value); -MEM_STATIC void MEM_write64(void* memPtr, U64 value); - -/*=== Little endian unaligned read/write ===*/ -MEM_STATIC U16 MEM_readLE16(const void* memPtr); -MEM_STATIC U32 MEM_readLE24(const void* memPtr); -MEM_STATIC U32 MEM_readLE32(const void* memPtr); -MEM_STATIC U64 MEM_readLE64(const void* memPtr); -MEM_STATIC size_t MEM_readLEST(const void* memPtr); - -MEM_STATIC void MEM_writeLE16(void* memPtr, U16 val); -MEM_STATIC void MEM_writeLE24(void* memPtr, U32 val); -MEM_STATIC void MEM_writeLE32(void* memPtr, U32 val32); -MEM_STATIC void MEM_writeLE64(void* memPtr, U64 val64); -MEM_STATIC void MEM_writeLEST(void* memPtr, size_t val); - -/*=== Big endian unaligned read/write ===*/ -MEM_STATIC U32 MEM_readBE32(const void* memPtr); -MEM_STATIC U64 MEM_readBE64(const void* memPtr); -MEM_STATIC size_t MEM_readBEST(const void* memPtr); - -MEM_STATIC void MEM_writeBE32(void* memPtr, U32 val32); -MEM_STATIC void MEM_writeBE64(void* memPtr, U64 val64); -MEM_STATIC void MEM_writeBEST(void* memPtr, size_t val); - -/*=== Byteswap ===*/ -MEM_STATIC U32 MEM_swap32(U32 in); -MEM_STATIC U64 MEM_swap64(U64 in); -MEM_STATIC size_t MEM_swapST(size_t in); - - -/*-************************************************************** -* Memory I/O Implementation -*****************************************************************/ -/* MEM_FORCE_MEMORY_ACCESS : - * By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable. - * Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal. - * The below switch allow to select different access method for improved performance. - * Method 0 (default) : use `memcpy()`. Safe and portable. - * Method 1 : `__packed` statement. It depends on compiler extension (i.e., not portable). - * This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`. - * Method 2 : direct access. This method is portable but violate C standard. - * It can generate buggy code on targets depending on alignment. - * In some circumstances, it's the only known way to get the most performance (i.e. GCC + ARMv6) - * See http://fastcompression.blogspot.fr/2015/08/accessing-unaligned-memory.html for details. - * Prefer these methods in priority order (0 > 1 > 2) - */ -#ifndef MEM_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */ -# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) ) -# define MEM_FORCE_MEMORY_ACCESS 2 -# elif defined(__INTEL_COMPILER) || defined(__GNUC__) || defined(__ICCARM__) -# define MEM_FORCE_MEMORY_ACCESS 1 -# endif -#endif - -MEM_STATIC unsigned MEM_32bits(void) { return sizeof(size_t)==4; } -MEM_STATIC unsigned MEM_64bits(void) { return sizeof(size_t)==8; } - -MEM_STATIC unsigned MEM_isLittleEndian(void) -{ - const union { U32 u; BYTE c[4]; } one = { 1 }; /* don't use static : performance detrimental */ - return one.c[0]; -} - -#if defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==2) - -/* violates C standard, by lying on structure alignment. -Only use if no other choice to achieve best performance on target platform */ -MEM_STATIC U16 MEM_read16(const void* memPtr) { return *(const U16*) memPtr; } -MEM_STATIC U32 MEM_read32(const void* memPtr) { return *(const U32*) memPtr; } -MEM_STATIC U64 MEM_read64(const void* memPtr) { return *(const U64*) memPtr; } -MEM_STATIC size_t MEM_readST(const void* memPtr) { return *(const size_t*) memPtr; } - -MEM_STATIC void MEM_write16(void* memPtr, U16 value) { *(U16*)memPtr = value; } -MEM_STATIC void MEM_write32(void* memPtr, U32 value) { *(U32*)memPtr = value; } -MEM_STATIC void MEM_write64(void* memPtr, U64 value) { *(U64*)memPtr = value; } - -#elif defined(MEM_FORCE_MEMORY_ACCESS) && (MEM_FORCE_MEMORY_ACCESS==1) - -/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */ -/* currently only defined for gcc and icc */ -#if defined(_MSC_VER) || (defined(__INTEL_COMPILER) && defined(WIN32)) - __pragma( pack(push, 1) ) - typedef struct { U16 v; } unalign16; - typedef struct { U32 v; } unalign32; - typedef struct { U64 v; } unalign64; - typedef struct { size_t v; } unalignArch; - __pragma( pack(pop) ) -#else - typedef struct { U16 v; } __attribute__((packed)) unalign16; - typedef struct { U32 v; } __attribute__((packed)) unalign32; - typedef struct { U64 v; } __attribute__((packed)) unalign64; - typedef struct { size_t v; } __attribute__((packed)) unalignArch; -#endif - -MEM_STATIC U16 MEM_read16(const void* ptr) { return ((const unalign16*)ptr)->v; } -MEM_STATIC U32 MEM_read32(const void* ptr) { return ((const unalign32*)ptr)->v; } -MEM_STATIC U64 MEM_read64(const void* ptr) { return ((const unalign64*)ptr)->v; } -MEM_STATIC size_t MEM_readST(const void* ptr) { return ((const unalignArch*)ptr)->v; } - -MEM_STATIC void MEM_write16(void* memPtr, U16 value) { ((unalign16*)memPtr)->v = value; } -MEM_STATIC void MEM_write32(void* memPtr, U32 value) { ((unalign32*)memPtr)->v = value; } -MEM_STATIC void MEM_write64(void* memPtr, U64 value) { ((unalign64*)memPtr)->v = value; } - -#else - -/* default method, safe and standard. - can sometimes prove slower */ - -MEM_STATIC U16 MEM_read16(const void* memPtr) -{ - U16 val; ZSTD_memcpy(&val, memPtr, sizeof(val)); return val; -} - -MEM_STATIC U32 MEM_read32(const void* memPtr) -{ - U32 val; ZSTD_memcpy(&val, memPtr, sizeof(val)); return val; -} - -MEM_STATIC U64 MEM_read64(const void* memPtr) -{ - U64 val; ZSTD_memcpy(&val, memPtr, sizeof(val)); return val; -} - -MEM_STATIC size_t MEM_readST(const void* memPtr) -{ - size_t val; ZSTD_memcpy(&val, memPtr, sizeof(val)); return val; -} - -MEM_STATIC void MEM_write16(void* memPtr, U16 value) -{ - ZSTD_memcpy(memPtr, &value, sizeof(value)); -} - -MEM_STATIC void MEM_write32(void* memPtr, U32 value) -{ - ZSTD_memcpy(memPtr, &value, sizeof(value)); -} - -MEM_STATIC void MEM_write64(void* memPtr, U64 value) -{ - ZSTD_memcpy(memPtr, &value, sizeof(value)); -} - -#endif /* MEM_FORCE_MEMORY_ACCESS */ - -MEM_STATIC U32 MEM_swap32(U32 in) -{ -#if defined(_MSC_VER) /* Visual Studio */ - return _byteswap_ulong(in); -#elif (defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)) \ - || (defined(__clang__) && __has_builtin(__builtin_bswap32)) - return __builtin_bswap32(in); -#else - return ((in << 24) & 0xff000000 ) | - ((in << 8) & 0x00ff0000 ) | - ((in >> 8) & 0x0000ff00 ) | - ((in >> 24) & 0x000000ff ); -#endif -} - -MEM_STATIC U64 MEM_swap64(U64 in) -{ -#if defined(_MSC_VER) /* Visual Studio */ - return _byteswap_uint64(in); -#elif (defined (__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__ >= 403)) \ - || (defined(__clang__) && __has_builtin(__builtin_bswap64)) - return __builtin_bswap64(in); -#else - return ((in << 56) & 0xff00000000000000ULL) | - ((in << 40) & 0x00ff000000000000ULL) | - ((in << 24) & 0x0000ff0000000000ULL) | - ((in << 8) & 0x000000ff00000000ULL) | - ((in >> 8) & 0x00000000ff000000ULL) | - ((in >> 24) & 0x0000000000ff0000ULL) | - ((in >> 40) & 0x000000000000ff00ULL) | - ((in >> 56) & 0x00000000000000ffULL); -#endif -} - -MEM_STATIC size_t MEM_swapST(size_t in) -{ - if (MEM_32bits()) - return (size_t)MEM_swap32((U32)in); - else - return (size_t)MEM_swap64((U64)in); -} - -/*=== Little endian r/w ===*/ - -MEM_STATIC U16 MEM_readLE16(const void* memPtr) -{ - if (MEM_isLittleEndian()) - return MEM_read16(memPtr); - else { - const BYTE* p = (const BYTE*)memPtr; - return (U16)(p[0] + (p[1]<<8)); - } -} - -MEM_STATIC void MEM_writeLE16(void* memPtr, U16 val) -{ - if (MEM_isLittleEndian()) { - MEM_write16(memPtr, val); - } else { - BYTE* p = (BYTE*)memPtr; - p[0] = (BYTE)val; - p[1] = (BYTE)(val>>8); - } -} - -MEM_STATIC U32 MEM_readLE24(const void* memPtr) -{ - return MEM_readLE16(memPtr) + (((const BYTE*)memPtr)[2] << 16); -} - -MEM_STATIC void MEM_writeLE24(void* memPtr, U32 val) -{ - MEM_writeLE16(memPtr, (U16)val); - ((BYTE*)memPtr)[2] = (BYTE)(val>>16); -} - -MEM_STATIC U32 MEM_readLE32(const void* memPtr) -{ - if (MEM_isLittleEndian()) - return MEM_read32(memPtr); - else - return MEM_swap32(MEM_read32(memPtr)); -} - -MEM_STATIC void MEM_writeLE32(void* memPtr, U32 val32) -{ - if (MEM_isLittleEndian()) - MEM_write32(memPtr, val32); - else - MEM_write32(memPtr, MEM_swap32(val32)); -} - -MEM_STATIC U64 MEM_readLE64(const void* memPtr) -{ - if (MEM_isLittleEndian()) - return MEM_read64(memPtr); - else - return MEM_swap64(MEM_read64(memPtr)); -} - -MEM_STATIC void MEM_writeLE64(void* memPtr, U64 val64) -{ - if (MEM_isLittleEndian()) - MEM_write64(memPtr, val64); - else - MEM_write64(memPtr, MEM_swap64(val64)); -} - -MEM_STATIC size_t MEM_readLEST(const void* memPtr) -{ - if (MEM_32bits()) - return (size_t)MEM_readLE32(memPtr); - else - return (size_t)MEM_readLE64(memPtr); -} - -MEM_STATIC void MEM_writeLEST(void* memPtr, size_t val) -{ - if (MEM_32bits()) - MEM_writeLE32(memPtr, (U32)val); - else - MEM_writeLE64(memPtr, (U64)val); -} - -/*=== Big endian r/w ===*/ - -MEM_STATIC U32 MEM_readBE32(const void* memPtr) -{ - if (MEM_isLittleEndian()) - return MEM_swap32(MEM_read32(memPtr)); - else - return MEM_read32(memPtr); -} - -MEM_STATIC void MEM_writeBE32(void* memPtr, U32 val32) -{ - if (MEM_isLittleEndian()) - MEM_write32(memPtr, MEM_swap32(val32)); - else - MEM_write32(memPtr, val32); -} - -MEM_STATIC U64 MEM_readBE64(const void* memPtr) -{ - if (MEM_isLittleEndian()) - return MEM_swap64(MEM_read64(memPtr)); - else - return MEM_read64(memPtr); -} - -MEM_STATIC void MEM_writeBE64(void* memPtr, U64 val64) -{ - if (MEM_isLittleEndian()) - MEM_write64(memPtr, MEM_swap64(val64)); - else - MEM_write64(memPtr, val64); -} - -MEM_STATIC size_t MEM_readBEST(const void* memPtr) -{ - if (MEM_32bits()) - return (size_t)MEM_readBE32(memPtr); - else - return (size_t)MEM_readBE64(memPtr); -} - -MEM_STATIC void MEM_writeBEST(void* memPtr, size_t val) -{ - if (MEM_32bits()) - MEM_writeBE32(memPtr, (U32)val); - else - MEM_writeBE64(memPtr, (U64)val); -} - -/* code only tested on 32 and 64 bits systems */ -MEM_STATIC void MEM_check(void) { DEBUG_STATIC_ASSERT((sizeof(size_t)==4) || (sizeof(size_t)==8)); } - - -#if defined (__cplusplus) -} -#endif - -#endif /* MEM_H_MODULE */ -/**** ended inlining mem.h ****/ -/**** start inlining error_private.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* Note : this module is expected to remain private, do not expose it */ - -#ifndef ERROR_H_MODULE -#define ERROR_H_MODULE - -#if defined (__cplusplus) -extern "C" { -#endif - - -/* **************************************** -* Dependencies -******************************************/ -/**** skipping file: zstd_deps.h ****/ -/**** start inlining zstd_errors.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_ERRORS_H_398273423 -#define ZSTD_ERRORS_H_398273423 - -#if defined (__cplusplus) -extern "C" { -#endif - -/*===== dependency =====*/ -#include /* size_t */ - - -/* ===== ZSTDERRORLIB_API : control library symbols visibility ===== */ -#ifndef ZSTDERRORLIB_VISIBILITY -# if defined(__GNUC__) && (__GNUC__ >= 4) -# define ZSTDERRORLIB_VISIBILITY __attribute__ ((visibility ("default"))) -# else -# define ZSTDERRORLIB_VISIBILITY -# endif -#endif -#if defined(ZSTD_DLL_EXPORT) && (ZSTD_DLL_EXPORT==1) -# define ZSTDERRORLIB_API __declspec(dllexport) ZSTDERRORLIB_VISIBILITY -#elif defined(ZSTD_DLL_IMPORT) && (ZSTD_DLL_IMPORT==1) -# define ZSTDERRORLIB_API __declspec(dllimport) ZSTDERRORLIB_VISIBILITY /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/ -#else -# define ZSTDERRORLIB_API ZSTDERRORLIB_VISIBILITY -#endif - -/*-********************************************* - * Error codes list - *-********************************************* - * Error codes _values_ are pinned down since v1.3.1 only. - * Therefore, don't rely on values if you may link to any version < v1.3.1. - * - * Only values < 100 are considered stable. - * - * note 1 : this API shall be used with static linking only. - * dynamic linking is not yet officially supported. - * note 2 : Prefer relying on the enum than on its value whenever possible - * This is the only supported way to use the error list < v1.3.1 - * note 3 : ZSTD_isError() is always correct, whatever the library version. - **********************************************/ -typedef enum { - ZSTD_error_no_error = 0, - ZSTD_error_GENERIC = 1, - ZSTD_error_prefix_unknown = 10, - ZSTD_error_version_unsupported = 12, - ZSTD_error_frameParameter_unsupported = 14, - ZSTD_error_frameParameter_windowTooLarge = 16, - ZSTD_error_corruption_detected = 20, - ZSTD_error_checksum_wrong = 22, - ZSTD_error_dictionary_corrupted = 30, - ZSTD_error_dictionary_wrong = 32, - ZSTD_error_dictionaryCreation_failed = 34, - ZSTD_error_parameter_unsupported = 40, - ZSTD_error_parameter_outOfBound = 42, - ZSTD_error_tableLog_tooLarge = 44, - ZSTD_error_maxSymbolValue_tooLarge = 46, - ZSTD_error_maxSymbolValue_tooSmall = 48, - ZSTD_error_stage_wrong = 60, - ZSTD_error_init_missing = 62, - ZSTD_error_memory_allocation = 64, - ZSTD_error_workSpace_tooSmall= 66, - ZSTD_error_dstSize_tooSmall = 70, - ZSTD_error_srcSize_wrong = 72, - ZSTD_error_dstBuffer_null = 74, - /* following error codes are __NOT STABLE__, they can be removed or changed in future versions */ - ZSTD_error_frameIndex_tooLarge = 100, - ZSTD_error_seekableIO = 102, - ZSTD_error_dstBuffer_wrong = 104, - ZSTD_error_srcBuffer_wrong = 105, - ZSTD_error_maxCode = 120 /* never EVER use this value directly, it can change in future versions! Use ZSTD_isError() instead */ -} ZSTD_ErrorCode; - -/*! ZSTD_getErrorCode() : - convert a `size_t` function result into a `ZSTD_ErrorCode` enum type, - which can be used to compare with enum list published above */ -ZSTDERRORLIB_API ZSTD_ErrorCode ZSTD_getErrorCode(size_t functionResult); -ZSTDERRORLIB_API const char* ZSTD_getErrorString(ZSTD_ErrorCode code); /**< Same as ZSTD_getErrorName, but using a `ZSTD_ErrorCode` enum argument */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_ERRORS_H_398273423 */ -/**** ended inlining zstd_errors.h ****/ - - -/* **************************************** -* Compiler-specific -******************************************/ -#if defined(__GNUC__) -# define ERR_STATIC static __attribute__((unused)) -#elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) -# define ERR_STATIC static inline -#elif defined(_MSC_VER) -# define ERR_STATIC static __inline -#else -# define ERR_STATIC static /* this version may generate warnings for unused static functions; disable the relevant warning */ -#endif - - -/*-**************************************** -* Customization (error_public.h) -******************************************/ -typedef ZSTD_ErrorCode ERR_enum; -#define PREFIX(name) ZSTD_error_##name - - -/*-**************************************** -* Error codes handling -******************************************/ -#undef ERROR /* already defined on Visual Studio */ -#define ERROR(name) ZSTD_ERROR(name) -#define ZSTD_ERROR(name) ((size_t)-PREFIX(name)) - -ERR_STATIC unsigned ERR_isError(size_t code) { return (code > ERROR(maxCode)); } - -ERR_STATIC ERR_enum ERR_getErrorCode(size_t code) { if (!ERR_isError(code)) return (ERR_enum)0; return (ERR_enum) (0-code); } - -/* check and forward error code */ -#define CHECK_V_F(e, f) size_t const e = f; if (ERR_isError(e)) return e -#define CHECK_F(f) { CHECK_V_F(_var_err__, f); } - - -/*-**************************************** -* Error Strings -******************************************/ - -const char* ERR_getErrorString(ERR_enum code); /* error_private.c */ - -ERR_STATIC const char* ERR_getErrorName(size_t code) -{ - return ERR_getErrorString(ERR_getErrorCode(code)); -} - -#if defined (__cplusplus) -} -#endif - -#endif /* ERROR_H_MODULE */ -/**** ended inlining error_private.h ****/ -#define FSE_STATIC_LINKING_ONLY /* FSE_MIN_TABLELOG */ -/**** start inlining fse.h ****/ -/* ****************************************************************** - * FSE : Finite State Entropy codec - * Public Prototypes declaration - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - -#if defined (__cplusplus) -extern "C" { -#endif - -#ifndef FSE_H -#define FSE_H - - -/*-***************************************** -* Dependencies -******************************************/ -/**** skipping file: zstd_deps.h ****/ - - -/*-***************************************** -* FSE_PUBLIC_API : control library symbols visibility -******************************************/ -#if defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) && defined(__GNUC__) && (__GNUC__ >= 4) -# define FSE_PUBLIC_API __attribute__ ((visibility ("default"))) -#elif defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) /* Visual expected */ -# define FSE_PUBLIC_API __declspec(dllexport) -#elif defined(FSE_DLL_IMPORT) && (FSE_DLL_IMPORT==1) -# define FSE_PUBLIC_API __declspec(dllimport) /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/ -#else -# define FSE_PUBLIC_API -#endif - -/*------ Version ------*/ -#define FSE_VERSION_MAJOR 0 -#define FSE_VERSION_MINOR 9 -#define FSE_VERSION_RELEASE 0 - -#define FSE_LIB_VERSION FSE_VERSION_MAJOR.FSE_VERSION_MINOR.FSE_VERSION_RELEASE -#define FSE_QUOTE(str) #str -#define FSE_EXPAND_AND_QUOTE(str) FSE_QUOTE(str) -#define FSE_VERSION_STRING FSE_EXPAND_AND_QUOTE(FSE_LIB_VERSION) - -#define FSE_VERSION_NUMBER (FSE_VERSION_MAJOR *100*100 + FSE_VERSION_MINOR *100 + FSE_VERSION_RELEASE) -FSE_PUBLIC_API unsigned FSE_versionNumber(void); /**< library version number; to be used when checking dll version */ - - -/*-**************************************** -* FSE simple functions -******************************************/ -/*! FSE_compress() : - Compress content of buffer 'src', of size 'srcSize', into destination buffer 'dst'. - 'dst' buffer must be already allocated. Compression runs faster is dstCapacity >= FSE_compressBound(srcSize). - @return : size of compressed data (<= dstCapacity). - Special values : if return == 0, srcData is not compressible => Nothing is stored within dst !!! - if return == 1, srcData is a single byte symbol * srcSize times. Use RLE compression instead. - if FSE_isError(return), compression failed (more details using FSE_getErrorName()) -*/ -FSE_PUBLIC_API size_t FSE_compress(void* dst, size_t dstCapacity, - const void* src, size_t srcSize); - -/*! FSE_decompress(): - Decompress FSE data from buffer 'cSrc', of size 'cSrcSize', - into already allocated destination buffer 'dst', of size 'dstCapacity'. - @return : size of regenerated data (<= maxDstSize), - or an error code, which can be tested using FSE_isError() . - - ** Important ** : FSE_decompress() does not decompress non-compressible nor RLE data !!! - Why ? : making this distinction requires a header. - Header management is intentionally delegated to the user layer, which can better manage special cases. -*/ -FSE_PUBLIC_API size_t FSE_decompress(void* dst, size_t dstCapacity, - const void* cSrc, size_t cSrcSize); - - -/*-***************************************** -* Tool functions -******************************************/ -FSE_PUBLIC_API size_t FSE_compressBound(size_t size); /* maximum compressed size */ - -/* Error Management */ -FSE_PUBLIC_API unsigned FSE_isError(size_t code); /* tells if a return value is an error code */ -FSE_PUBLIC_API const char* FSE_getErrorName(size_t code); /* provides error code string (useful for debugging) */ - - -/*-***************************************** -* FSE advanced functions -******************************************/ -/*! FSE_compress2() : - Same as FSE_compress(), but allows the selection of 'maxSymbolValue' and 'tableLog' - Both parameters can be defined as '0' to mean : use default value - @return : size of compressed data - Special values : if return == 0, srcData is not compressible => Nothing is stored within cSrc !!! - if return == 1, srcData is a single byte symbol * srcSize times. Use RLE compression. - if FSE_isError(return), it's an error code. -*/ -FSE_PUBLIC_API size_t FSE_compress2 (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog); - - -/*-***************************************** -* FSE detailed API -******************************************/ -/*! -FSE_compress() does the following: -1. count symbol occurrence from source[] into table count[] (see hist.h) -2. normalize counters so that sum(count[]) == Power_of_2 (2^tableLog) -3. save normalized counters to memory buffer using writeNCount() -4. build encoding table 'CTable' from normalized counters -5. encode the data stream using encoding table 'CTable' - -FSE_decompress() does the following: -1. read normalized counters with readNCount() -2. build decoding table 'DTable' from normalized counters -3. decode the data stream using decoding table 'DTable' - -The following API allows targeting specific sub-functions for advanced tasks. -For example, it's possible to compress several blocks using the same 'CTable', -or to save and provide normalized distribution using external method. -*/ - -/* *** COMPRESSION *** */ - -/*! FSE_optimalTableLog(): - dynamically downsize 'tableLog' when conditions are met. - It saves CPU time, by using smaller tables, while preserving or even improving compression ratio. - @return : recommended tableLog (necessarily <= 'maxTableLog') */ -FSE_PUBLIC_API unsigned FSE_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue); - -/*! FSE_normalizeCount(): - normalize counts so that sum(count[]) == Power_of_2 (2^tableLog) - 'normalizedCounter' is a table of short, of minimum size (maxSymbolValue+1). - useLowProbCount is a boolean parameter which trades off compressed size for - faster header decoding. When it is set to 1, the compressed data will be slightly - smaller. And when it is set to 0, FSE_readNCount() and FSE_buildDTable() will be - faster. If you are compressing a small amount of data (< 2 KB) then useLowProbCount=0 - is a good default, since header deserialization makes a big speed difference. - Otherwise, useLowProbCount=1 is a good default, since the speed difference is small. - @return : tableLog, - or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_normalizeCount(short* normalizedCounter, unsigned tableLog, - const unsigned* count, size_t srcSize, unsigned maxSymbolValue, unsigned useLowProbCount); - -/*! FSE_NCountWriteBound(): - Provides the maximum possible size of an FSE normalized table, given 'maxSymbolValue' and 'tableLog'. - Typically useful for allocation purpose. */ -FSE_PUBLIC_API size_t FSE_NCountWriteBound(unsigned maxSymbolValue, unsigned tableLog); - -/*! FSE_writeNCount(): - Compactly save 'normalizedCounter' into 'buffer'. - @return : size of the compressed table, - or an errorCode, which can be tested using FSE_isError(). */ -FSE_PUBLIC_API size_t FSE_writeNCount (void* buffer, size_t bufferSize, - const short* normalizedCounter, - unsigned maxSymbolValue, unsigned tableLog); - -/*! Constructor and Destructor of FSE_CTable. - Note that FSE_CTable size depends on 'tableLog' and 'maxSymbolValue' */ -typedef unsigned FSE_CTable; /* don't allocate that. It's only meant to be more restrictive than void* */ -FSE_PUBLIC_API FSE_CTable* FSE_createCTable (unsigned maxSymbolValue, unsigned tableLog); -FSE_PUBLIC_API void FSE_freeCTable (FSE_CTable* ct); - -/*! FSE_buildCTable(): - Builds `ct`, which must be already allocated, using FSE_createCTable(). - @return : 0, or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_buildCTable(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog); - -/*! FSE_compress_usingCTable(): - Compress `src` using `ct` into `dst` which must be already allocated. - @return : size of compressed data (<= `dstCapacity`), - or 0 if compressed data could not fit into `dst`, - or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_compress_usingCTable (void* dst, size_t dstCapacity, const void* src, size_t srcSize, const FSE_CTable* ct); - -/*! -Tutorial : ----------- -The first step is to count all symbols. FSE_count() does this job very fast. -Result will be saved into 'count', a table of unsigned int, which must be already allocated, and have 'maxSymbolValuePtr[0]+1' cells. -'src' is a table of bytes of size 'srcSize'. All values within 'src' MUST be <= maxSymbolValuePtr[0] -maxSymbolValuePtr[0] will be updated, with its real value (necessarily <= original value) -FSE_count() will return the number of occurrence of the most frequent symbol. -This can be used to know if there is a single symbol within 'src', and to quickly evaluate its compressibility. -If there is an error, the function will return an ErrorCode (which can be tested using FSE_isError()). - -The next step is to normalize the frequencies. -FSE_normalizeCount() will ensure that sum of frequencies is == 2 ^'tableLog'. -It also guarantees a minimum of 1 to any Symbol with frequency >= 1. -You can use 'tableLog'==0 to mean "use default tableLog value". -If you are unsure of which tableLog value to use, you can ask FSE_optimalTableLog(), -which will provide the optimal valid tableLog given sourceSize, maxSymbolValue, and a user-defined maximum (0 means "default"). - -The result of FSE_normalizeCount() will be saved into a table, -called 'normalizedCounter', which is a table of signed short. -'normalizedCounter' must be already allocated, and have at least 'maxSymbolValue+1' cells. -The return value is tableLog if everything proceeded as expected. -It is 0 if there is a single symbol within distribution. -If there is an error (ex: invalid tableLog value), the function will return an ErrorCode (which can be tested using FSE_isError()). - -'normalizedCounter' can be saved in a compact manner to a memory area using FSE_writeNCount(). -'buffer' must be already allocated. -For guaranteed success, buffer size must be at least FSE_headerBound(). -The result of the function is the number of bytes written into 'buffer'. -If there is an error, the function will return an ErrorCode (which can be tested using FSE_isError(); ex : buffer size too small). - -'normalizedCounter' can then be used to create the compression table 'CTable'. -The space required by 'CTable' must be already allocated, using FSE_createCTable(). -You can then use FSE_buildCTable() to fill 'CTable'. -If there is an error, both functions will return an ErrorCode (which can be tested using FSE_isError()). - -'CTable' can then be used to compress 'src', with FSE_compress_usingCTable(). -Similar to FSE_count(), the convention is that 'src' is assumed to be a table of char of size 'srcSize' -The function returns the size of compressed data (without header), necessarily <= `dstCapacity`. -If it returns '0', compressed data could not fit into 'dst'. -If there is an error, the function will return an ErrorCode (which can be tested using FSE_isError()). -*/ - - -/* *** DECOMPRESSION *** */ - -/*! FSE_readNCount(): - Read compactly saved 'normalizedCounter' from 'rBuffer'. - @return : size read from 'rBuffer', - or an errorCode, which can be tested using FSE_isError(). - maxSymbolValuePtr[0] and tableLogPtr[0] will also be updated with their respective values */ -FSE_PUBLIC_API size_t FSE_readNCount (short* normalizedCounter, - unsigned* maxSymbolValuePtr, unsigned* tableLogPtr, - const void* rBuffer, size_t rBuffSize); - -/*! FSE_readNCount_bmi2(): - * Same as FSE_readNCount() but pass bmi2=1 when your CPU supports BMI2 and 0 otherwise. - */ -FSE_PUBLIC_API size_t FSE_readNCount_bmi2(short* normalizedCounter, - unsigned* maxSymbolValuePtr, unsigned* tableLogPtr, - const void* rBuffer, size_t rBuffSize, int bmi2); - -/*! Constructor and Destructor of FSE_DTable. - Note that its size depends on 'tableLog' */ -typedef unsigned FSE_DTable; /* don't allocate that. It's just a way to be more restrictive than void* */ -FSE_PUBLIC_API FSE_DTable* FSE_createDTable(unsigned tableLog); -FSE_PUBLIC_API void FSE_freeDTable(FSE_DTable* dt); - -/*! FSE_buildDTable(): - Builds 'dt', which must be already allocated, using FSE_createDTable(). - return : 0, or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_buildDTable (FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog); - -/*! FSE_decompress_usingDTable(): - Decompress compressed source `cSrc` of size `cSrcSize` using `dt` - into `dst` which must be already allocated. - @return : size of regenerated data (necessarily <= `dstCapacity`), - or an errorCode, which can be tested using FSE_isError() */ -FSE_PUBLIC_API size_t FSE_decompress_usingDTable(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, const FSE_DTable* dt); - -/*! -Tutorial : ----------- -(Note : these functions only decompress FSE-compressed blocks. - If block is uncompressed, use memcpy() instead - If block is a single repeated byte, use memset() instead ) - -The first step is to obtain the normalized frequencies of symbols. -This can be performed by FSE_readNCount() if it was saved using FSE_writeNCount(). -'normalizedCounter' must be already allocated, and have at least 'maxSymbolValuePtr[0]+1' cells of signed short. -In practice, that means it's necessary to know 'maxSymbolValue' beforehand, -or size the table to handle worst case situations (typically 256). -FSE_readNCount() will provide 'tableLog' and 'maxSymbolValue'. -The result of FSE_readNCount() is the number of bytes read from 'rBuffer'. -Note that 'rBufferSize' must be at least 4 bytes, even if useful information is less than that. -If there is an error, the function will return an error code, which can be tested using FSE_isError(). - -The next step is to build the decompression tables 'FSE_DTable' from 'normalizedCounter'. -This is performed by the function FSE_buildDTable(). -The space required by 'FSE_DTable' must be already allocated using FSE_createDTable(). -If there is an error, the function will return an error code, which can be tested using FSE_isError(). - -`FSE_DTable` can then be used to decompress `cSrc`, with FSE_decompress_usingDTable(). -`cSrcSize` must be strictly correct, otherwise decompression will fail. -FSE_decompress_usingDTable() result will tell how many bytes were regenerated (<=`dstCapacity`). -If there is an error, the function will return an error code, which can be tested using FSE_isError(). (ex: dst buffer too small) -*/ - -#endif /* FSE_H */ - -#if defined(FSE_STATIC_LINKING_ONLY) && !defined(FSE_H_FSE_STATIC_LINKING_ONLY) -#define FSE_H_FSE_STATIC_LINKING_ONLY - -/* *** Dependency *** */ -/**** start inlining bitstream.h ****/ -/* ****************************************************************** - * bitstream - * Part of FSE library - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ -#ifndef BITSTREAM_H_MODULE -#define BITSTREAM_H_MODULE - -#if defined (__cplusplus) -extern "C" { -#endif -/* -* This API consists of small unitary functions, which must be inlined for best performance. -* Since link-time-optimization is not available for all compilers, -* these functions are defined into a .h to be included. -*/ - -/*-**************************************** -* Dependencies -******************************************/ -/**** skipping file: mem.h ****/ -/**** skipping file: compiler.h ****/ -/**** skipping file: debug.h ****/ -/**** skipping file: error_private.h ****/ - - -/*========================================= -* Target specific -=========================================*/ -#ifndef ZSTD_NO_INTRINSICS -# if defined(__BMI__) && defined(__GNUC__) -# include /* support for bextr (experimental) */ -# elif defined(__ICCARM__) -# include -# endif -#endif - -#define STREAM_ACCUMULATOR_MIN_32 25 -#define STREAM_ACCUMULATOR_MIN_64 57 -#define STREAM_ACCUMULATOR_MIN ((U32)(MEM_32bits() ? STREAM_ACCUMULATOR_MIN_32 : STREAM_ACCUMULATOR_MIN_64)) - - -/*-****************************************** -* bitStream encoding API (write forward) -********************************************/ -/* bitStream can mix input from multiple sources. - * A critical property of these streams is that they encode and decode in **reverse** direction. - * So the first bit sequence you add will be the last to be read, like a LIFO stack. - */ -typedef struct { - size_t bitContainer; - unsigned bitPos; - char* startPtr; - char* ptr; - char* endPtr; -} BIT_CStream_t; - -MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC, void* dstBuffer, size_t dstCapacity); -MEM_STATIC void BIT_addBits(BIT_CStream_t* bitC, size_t value, unsigned nbBits); -MEM_STATIC void BIT_flushBits(BIT_CStream_t* bitC); -MEM_STATIC size_t BIT_closeCStream(BIT_CStream_t* bitC); - -/* Start with initCStream, providing the size of buffer to write into. -* bitStream will never write outside of this buffer. -* `dstCapacity` must be >= sizeof(bitD->bitContainer), otherwise @return will be an error code. -* -* bits are first added to a local register. -* Local register is size_t, hence 64-bits on 64-bits systems, or 32-bits on 32-bits systems. -* Writing data into memory is an explicit operation, performed by the flushBits function. -* Hence keep track how many bits are potentially stored into local register to avoid register overflow. -* After a flushBits, a maximum of 7 bits might still be stored into local register. -* -* Avoid storing elements of more than 24 bits if you want compatibility with 32-bits bitstream readers. -* -* Last operation is to close the bitStream. -* The function returns the final size of CStream in bytes. -* If data couldn't fit into `dstBuffer`, it will return a 0 ( == not storable) -*/ - - -/*-******************************************** -* bitStream decoding API (read backward) -**********************************************/ -typedef struct { - size_t bitContainer; - unsigned bitsConsumed; - const char* ptr; - const char* start; - const char* limitPtr; -} BIT_DStream_t; - -typedef enum { BIT_DStream_unfinished = 0, - BIT_DStream_endOfBuffer = 1, - BIT_DStream_completed = 2, - BIT_DStream_overflow = 3 } BIT_DStream_status; /* result of BIT_reloadDStream() */ - /* 1,2,4,8 would be better for bitmap combinations, but slows down performance a bit ... :( */ - -MEM_STATIC size_t BIT_initDStream(BIT_DStream_t* bitD, const void* srcBuffer, size_t srcSize); -MEM_STATIC size_t BIT_readBits(BIT_DStream_t* bitD, unsigned nbBits); -MEM_STATIC BIT_DStream_status BIT_reloadDStream(BIT_DStream_t* bitD); -MEM_STATIC unsigned BIT_endOfDStream(const BIT_DStream_t* bitD); - - -/* Start by invoking BIT_initDStream(). -* A chunk of the bitStream is then stored into a local register. -* Local register size is 64-bits on 64-bits systems, 32-bits on 32-bits systems (size_t). -* You can then retrieve bitFields stored into the local register, **in reverse order**. -* Local register is explicitly reloaded from memory by the BIT_reloadDStream() method. -* A reload guarantee a minimum of ((8*sizeof(bitD->bitContainer))-7) bits when its result is BIT_DStream_unfinished. -* Otherwise, it can be less than that, so proceed accordingly. -* Checking if DStream has reached its end can be performed with BIT_endOfDStream(). -*/ - - -/*-**************************************** -* unsafe API -******************************************/ -MEM_STATIC void BIT_addBitsFast(BIT_CStream_t* bitC, size_t value, unsigned nbBits); -/* faster, but works only if value is "clean", meaning all high bits above nbBits are 0 */ - -MEM_STATIC void BIT_flushBitsFast(BIT_CStream_t* bitC); -/* unsafe version; does not check buffer overflow */ - -MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits); -/* faster, but works only if nbBits >= 1 */ - - - -/*-************************************************************** -* Internal functions -****************************************************************/ -MEM_STATIC unsigned BIT_highbit32 (U32 val) -{ - assert(val != 0); - { -# if defined(_MSC_VER) /* Visual */ -# if STATIC_BMI2 == 1 - return _lzcnt_u32(val) ^ 31; -# else - unsigned long r = 0; - return _BitScanReverse(&r, val) ? (unsigned)r : 0; -# endif -# elif defined(__GNUC__) && (__GNUC__ >= 3) /* Use GCC Intrinsic */ - return __builtin_clz (val) ^ 31; -# elif defined(__ICCARM__) /* IAR Intrinsic */ - return 31 - __CLZ(val); -# else /* Software version */ - static const unsigned DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, - 11, 14, 16, 18, 22, 25, 3, 30, - 8, 12, 20, 28, 15, 17, 24, 7, - 19, 27, 23, 6, 26, 5, 4, 31 }; - U32 v = val; - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - return DeBruijnClz[ (U32) (v * 0x07C4ACDDU) >> 27]; -# endif - } -} - -/*===== Local Constants =====*/ -static const unsigned BIT_mask[] = { - 0, 1, 3, 7, 0xF, 0x1F, - 0x3F, 0x7F, 0xFF, 0x1FF, 0x3FF, 0x7FF, - 0xFFF, 0x1FFF, 0x3FFF, 0x7FFF, 0xFFFF, 0x1FFFF, - 0x3FFFF, 0x7FFFF, 0xFFFFF, 0x1FFFFF, 0x3FFFFF, 0x7FFFFF, - 0xFFFFFF, 0x1FFFFFF, 0x3FFFFFF, 0x7FFFFFF, 0xFFFFFFF, 0x1FFFFFFF, - 0x3FFFFFFF, 0x7FFFFFFF}; /* up to 31 bits */ -#define BIT_MASK_SIZE (sizeof(BIT_mask) / sizeof(BIT_mask[0])) - -/*-************************************************************** -* bitStream encoding -****************************************************************/ -/*! BIT_initCStream() : - * `dstCapacity` must be > sizeof(size_t) - * @return : 0 if success, - * otherwise an error code (can be tested using ERR_isError()) */ -MEM_STATIC size_t BIT_initCStream(BIT_CStream_t* bitC, - void* startPtr, size_t dstCapacity) -{ - bitC->bitContainer = 0; - bitC->bitPos = 0; - bitC->startPtr = (char*)startPtr; - bitC->ptr = bitC->startPtr; - bitC->endPtr = bitC->startPtr + dstCapacity - sizeof(bitC->bitContainer); - if (dstCapacity <= sizeof(bitC->bitContainer)) return ERROR(dstSize_tooSmall); - return 0; -} - -/*! BIT_addBits() : - * can add up to 31 bits into `bitC`. - * Note : does not check for register overflow ! */ -MEM_STATIC void BIT_addBits(BIT_CStream_t* bitC, - size_t value, unsigned nbBits) -{ - DEBUG_STATIC_ASSERT(BIT_MASK_SIZE == 32); - assert(nbBits < BIT_MASK_SIZE); - assert(nbBits + bitC->bitPos < sizeof(bitC->bitContainer) * 8); - bitC->bitContainer |= (value & BIT_mask[nbBits]) << bitC->bitPos; - bitC->bitPos += nbBits; -} - -/*! BIT_addBitsFast() : - * works only if `value` is _clean_, - * meaning all high bits above nbBits are 0 */ -MEM_STATIC void BIT_addBitsFast(BIT_CStream_t* bitC, - size_t value, unsigned nbBits) -{ - assert((value>>nbBits) == 0); - assert(nbBits + bitC->bitPos < sizeof(bitC->bitContainer) * 8); - bitC->bitContainer |= value << bitC->bitPos; - bitC->bitPos += nbBits; -} - -/*! BIT_flushBitsFast() : - * assumption : bitContainer has not overflowed - * unsafe version; does not check buffer overflow */ -MEM_STATIC void BIT_flushBitsFast(BIT_CStream_t* bitC) -{ - size_t const nbBytes = bitC->bitPos >> 3; - assert(bitC->bitPos < sizeof(bitC->bitContainer) * 8); - assert(bitC->ptr <= bitC->endPtr); - MEM_writeLEST(bitC->ptr, bitC->bitContainer); - bitC->ptr += nbBytes; - bitC->bitPos &= 7; - bitC->bitContainer >>= nbBytes*8; -} - -/*! BIT_flushBits() : - * assumption : bitContainer has not overflowed - * safe version; check for buffer overflow, and prevents it. - * note : does not signal buffer overflow. - * overflow will be revealed later on using BIT_closeCStream() */ -MEM_STATIC void BIT_flushBits(BIT_CStream_t* bitC) -{ - size_t const nbBytes = bitC->bitPos >> 3; - assert(bitC->bitPos < sizeof(bitC->bitContainer) * 8); - assert(bitC->ptr <= bitC->endPtr); - MEM_writeLEST(bitC->ptr, bitC->bitContainer); - bitC->ptr += nbBytes; - if (bitC->ptr > bitC->endPtr) bitC->ptr = bitC->endPtr; - bitC->bitPos &= 7; - bitC->bitContainer >>= nbBytes*8; -} - -/*! BIT_closeCStream() : - * @return : size of CStream, in bytes, - * or 0 if it could not fit into dstBuffer */ -MEM_STATIC size_t BIT_closeCStream(BIT_CStream_t* bitC) -{ - BIT_addBitsFast(bitC, 1, 1); /* endMark */ - BIT_flushBits(bitC); - if (bitC->ptr >= bitC->endPtr) return 0; /* overflow detected */ - return (bitC->ptr - bitC->startPtr) + (bitC->bitPos > 0); -} - - -/*-******************************************************** -* bitStream decoding -**********************************************************/ -/*! BIT_initDStream() : - * Initialize a BIT_DStream_t. - * `bitD` : a pointer to an already allocated BIT_DStream_t structure. - * `srcSize` must be the *exact* size of the bitStream, in bytes. - * @return : size of stream (== srcSize), or an errorCode if a problem is detected - */ -MEM_STATIC size_t BIT_initDStream(BIT_DStream_t* bitD, const void* srcBuffer, size_t srcSize) -{ - if (srcSize < 1) { ZSTD_memset(bitD, 0, sizeof(*bitD)); return ERROR(srcSize_wrong); } - - bitD->start = (const char*)srcBuffer; - bitD->limitPtr = bitD->start + sizeof(bitD->bitContainer); - - if (srcSize >= sizeof(bitD->bitContainer)) { /* normal case */ - bitD->ptr = (const char*)srcBuffer + srcSize - sizeof(bitD->bitContainer); - bitD->bitContainer = MEM_readLEST(bitD->ptr); - { BYTE const lastByte = ((const BYTE*)srcBuffer)[srcSize-1]; - bitD->bitsConsumed = lastByte ? 8 - BIT_highbit32(lastByte) : 0; /* ensures bitsConsumed is always set */ - if (lastByte == 0) return ERROR(GENERIC); /* endMark not present */ } - } else { - bitD->ptr = bitD->start; - bitD->bitContainer = *(const BYTE*)(bitD->start); - switch(srcSize) - { - case 7: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[6]) << (sizeof(bitD->bitContainer)*8 - 16); - /* fall-through */ - - case 6: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[5]) << (sizeof(bitD->bitContainer)*8 - 24); - /* fall-through */ - - case 5: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[4]) << (sizeof(bitD->bitContainer)*8 - 32); - /* fall-through */ - - case 4: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[3]) << 24; - /* fall-through */ - - case 3: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[2]) << 16; - /* fall-through */ - - case 2: bitD->bitContainer += (size_t)(((const BYTE*)(srcBuffer))[1]) << 8; - /* fall-through */ - - default: break; - } - { BYTE const lastByte = ((const BYTE*)srcBuffer)[srcSize-1]; - bitD->bitsConsumed = lastByte ? 8 - BIT_highbit32(lastByte) : 0; - if (lastByte == 0) return ERROR(corruption_detected); /* endMark not present */ - } - bitD->bitsConsumed += (U32)(sizeof(bitD->bitContainer) - srcSize)*8; - } - - return srcSize; -} - -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getUpperBits(size_t bitContainer, U32 const start) -{ - return bitContainer >> start; -} - -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getMiddleBits(size_t bitContainer, U32 const start, U32 const nbBits) -{ - U32 const regMask = sizeof(bitContainer)*8 - 1; - /* if start > regMask, bitstream is corrupted, and result is undefined */ - assert(nbBits < BIT_MASK_SIZE); - return (bitContainer >> (start & regMask)) & BIT_mask[nbBits]; -} - -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_getLowerBits(size_t bitContainer, U32 const nbBits) -{ -#if defined(STATIC_BMI2) && STATIC_BMI2 == 1 - return _bzhi_u64(bitContainer, nbBits); -#else - assert(nbBits < BIT_MASK_SIZE); - return bitContainer & BIT_mask[nbBits]; -#endif -} - -/*! BIT_lookBits() : - * Provides next n bits from local register. - * local register is not modified. - * On 32-bits, maxNbBits==24. - * On 64-bits, maxNbBits==56. - * @return : value extracted */ -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_lookBits(const BIT_DStream_t* bitD, U32 nbBits) -{ - /* arbitrate between double-shift and shift+mask */ -#if 1 - /* if bitD->bitsConsumed + nbBits > sizeof(bitD->bitContainer)*8, - * bitstream is likely corrupted, and result is undefined */ - return BIT_getMiddleBits(bitD->bitContainer, (sizeof(bitD->bitContainer)*8) - bitD->bitsConsumed - nbBits, nbBits); -#else - /* this code path is slower on my os-x laptop */ - U32 const regMask = sizeof(bitD->bitContainer)*8 - 1; - return ((bitD->bitContainer << (bitD->bitsConsumed & regMask)) >> 1) >> ((regMask-nbBits) & regMask); -#endif -} - -/*! BIT_lookBitsFast() : - * unsafe version; only works if nbBits >= 1 */ -MEM_STATIC size_t BIT_lookBitsFast(const BIT_DStream_t* bitD, U32 nbBits) -{ - U32 const regMask = sizeof(bitD->bitContainer)*8 - 1; - assert(nbBits >= 1); - return (bitD->bitContainer << (bitD->bitsConsumed & regMask)) >> (((regMask+1)-nbBits) & regMask); -} - -MEM_STATIC FORCE_INLINE_ATTR void BIT_skipBits(BIT_DStream_t* bitD, U32 nbBits) -{ - bitD->bitsConsumed += nbBits; -} - -/*! BIT_readBits() : - * Read (consume) next n bits from local register and update. - * Pay attention to not read more than nbBits contained into local register. - * @return : extracted value. */ -MEM_STATIC FORCE_INLINE_ATTR size_t BIT_readBits(BIT_DStream_t* bitD, unsigned nbBits) -{ - size_t const value = BIT_lookBits(bitD, nbBits); - BIT_skipBits(bitD, nbBits); - return value; -} - -/*! BIT_readBitsFast() : - * unsafe version; only works only if nbBits >= 1 */ -MEM_STATIC size_t BIT_readBitsFast(BIT_DStream_t* bitD, unsigned nbBits) -{ - size_t const value = BIT_lookBitsFast(bitD, nbBits); - assert(nbBits >= 1); - BIT_skipBits(bitD, nbBits); - return value; -} - -/*! BIT_reloadDStreamFast() : - * Similar to BIT_reloadDStream(), but with two differences: - * 1. bitsConsumed <= sizeof(bitD->bitContainer)*8 must hold! - * 2. Returns BIT_DStream_overflow when bitD->ptr < bitD->limitPtr, at this - * point you must use BIT_reloadDStream() to reload. - */ -MEM_STATIC BIT_DStream_status BIT_reloadDStreamFast(BIT_DStream_t* bitD) -{ - if (UNLIKELY(bitD->ptr < bitD->limitPtr)) - return BIT_DStream_overflow; - assert(bitD->bitsConsumed <= sizeof(bitD->bitContainer)*8); - bitD->ptr -= bitD->bitsConsumed >> 3; - bitD->bitsConsumed &= 7; - bitD->bitContainer = MEM_readLEST(bitD->ptr); - return BIT_DStream_unfinished; -} - -/*! BIT_reloadDStream() : - * Refill `bitD` from buffer previously set in BIT_initDStream() . - * This function is safe, it guarantees it will not read beyond src buffer. - * @return : status of `BIT_DStream_t` internal register. - * when status == BIT_DStream_unfinished, internal register is filled with at least 25 or 57 bits */ -MEM_STATIC BIT_DStream_status BIT_reloadDStream(BIT_DStream_t* bitD) -{ - if (bitD->bitsConsumed > (sizeof(bitD->bitContainer)*8)) /* overflow detected, like end of stream */ - return BIT_DStream_overflow; - - if (bitD->ptr >= bitD->limitPtr) { - return BIT_reloadDStreamFast(bitD); - } - if (bitD->ptr == bitD->start) { - if (bitD->bitsConsumed < sizeof(bitD->bitContainer)*8) return BIT_DStream_endOfBuffer; - return BIT_DStream_completed; - } - /* start < ptr < limitPtr */ - { U32 nbBytes = bitD->bitsConsumed >> 3; - BIT_DStream_status result = BIT_DStream_unfinished; - if (bitD->ptr - nbBytes < bitD->start) { - nbBytes = (U32)(bitD->ptr - bitD->start); /* ptr > start */ - result = BIT_DStream_endOfBuffer; - } - bitD->ptr -= nbBytes; - bitD->bitsConsumed -= nbBytes*8; - bitD->bitContainer = MEM_readLEST(bitD->ptr); /* reminder : srcSize > sizeof(bitD->bitContainer), otherwise bitD->ptr == bitD->start */ - return result; - } -} - -/*! BIT_endOfDStream() : - * @return : 1 if DStream has _exactly_ reached its end (all bits consumed). - */ -MEM_STATIC unsigned BIT_endOfDStream(const BIT_DStream_t* DStream) -{ - return ((DStream->ptr == DStream->start) && (DStream->bitsConsumed == sizeof(DStream->bitContainer)*8)); -} - -#if defined (__cplusplus) -} -#endif - -#endif /* BITSTREAM_H_MODULE */ -/**** ended inlining bitstream.h ****/ - - -/* ***************************************** -* Static allocation -*******************************************/ -/* FSE buffer bounds */ -#define FSE_NCOUNTBOUND 512 -#define FSE_BLOCKBOUND(size) ((size) + ((size)>>7) + 4 /* fse states */ + sizeof(size_t) /* bitContainer */) -#define FSE_COMPRESSBOUND(size) (FSE_NCOUNTBOUND + FSE_BLOCKBOUND(size)) /* Macro version, useful for static allocation */ - -/* It is possible to statically allocate FSE CTable/DTable as a table of FSE_CTable/FSE_DTable using below macros */ -#define FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) (1 + (1<<((maxTableLog)-1)) + (((maxSymbolValue)+1)*2)) -#define FSE_DTABLE_SIZE_U32(maxTableLog) (1 + (1<<(maxTableLog))) - -/* or use the size to malloc() space directly. Pay attention to alignment restrictions though */ -#define FSE_CTABLE_SIZE(maxTableLog, maxSymbolValue) (FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) * sizeof(FSE_CTable)) -#define FSE_DTABLE_SIZE(maxTableLog) (FSE_DTABLE_SIZE_U32(maxTableLog) * sizeof(FSE_DTable)) - - -/* ***************************************** - * FSE advanced API - ***************************************** */ - -unsigned FSE_optimalTableLog_internal(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue, unsigned minus); -/**< same as FSE_optimalTableLog(), which used `minus==2` */ - -/* FSE_compress_wksp() : - * Same as FSE_compress2(), but using an externally allocated scratch buffer (`workSpace`). - * FSE_COMPRESS_WKSP_SIZE_U32() provides the minimum size required for `workSpace` as a table of FSE_CTable. - */ -#define FSE_COMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) ( FSE_CTABLE_SIZE_U32(maxTableLog, maxSymbolValue) + ((maxTableLog > 12) ? (1 << (maxTableLog - 2)) : 1024) ) -size_t FSE_compress_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); - -size_t FSE_buildCTable_raw (FSE_CTable* ct, unsigned nbBits); -/**< build a fake FSE_CTable, designed for a flat distribution, where each symbol uses nbBits */ - -size_t FSE_buildCTable_rle (FSE_CTable* ct, unsigned char symbolValue); -/**< build a fake FSE_CTable, designed to compress always the same symbolValue */ - -/* FSE_buildCTable_wksp() : - * Same as FSE_buildCTable(), but using an externally allocated scratch buffer (`workSpace`). - * `wkspSize` must be >= `FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog)` of `unsigned`. - */ -#define FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog) (maxSymbolValue + 2 + (1ull << (tableLog - 2))) -#define FSE_BUILD_CTABLE_WORKSPACE_SIZE(maxSymbolValue, tableLog) (sizeof(unsigned) * FSE_BUILD_CTABLE_WORKSPACE_SIZE_U32(maxSymbolValue, tableLog)) -size_t FSE_buildCTable_wksp(FSE_CTable* ct, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); - -#define FSE_BUILD_DTABLE_WKSP_SIZE(maxTableLog, maxSymbolValue) (sizeof(short) * (maxSymbolValue + 1) + (1ULL << maxTableLog) + 8) -#define FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) ((FSE_BUILD_DTABLE_WKSP_SIZE(maxTableLog, maxSymbolValue) + sizeof(unsigned) - 1) / sizeof(unsigned)) -FSE_PUBLIC_API size_t FSE_buildDTable_wksp(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); -/**< Same as FSE_buildDTable(), using an externally allocated `workspace` produced with `FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxSymbolValue)` */ - -size_t FSE_buildDTable_raw (FSE_DTable* dt, unsigned nbBits); -/**< build a fake FSE_DTable, designed to read a flat distribution where each symbol uses nbBits */ - -size_t FSE_buildDTable_rle (FSE_DTable* dt, unsigned char symbolValue); -/**< build a fake FSE_DTable, designed to always generate the same symbolValue */ - -#define FSE_DECOMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) (FSE_DTABLE_SIZE_U32(maxTableLog) + FSE_BUILD_DTABLE_WKSP_SIZE_U32(maxTableLog, maxSymbolValue)) -#define FSE_DECOMPRESS_WKSP_SIZE(maxTableLog, maxSymbolValue) (FSE_DECOMPRESS_WKSP_SIZE_U32(maxTableLog, maxSymbolValue) * sizeof(unsigned)) -size_t FSE_decompress_wksp(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize); -/**< same as FSE_decompress(), using an externally allocated `workSpace` produced with `FSE_DECOMPRESS_WKSP_SIZE_U32(maxLog, maxSymbolValue)` */ - -size_t FSE_decompress_wksp_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize, int bmi2); -/**< Same as FSE_decompress_wksp() but with dynamic BMI2 support. Pass 1 if your CPU supports BMI2 or 0 if it doesn't. */ - -typedef enum { - FSE_repeat_none, /**< Cannot use the previous table */ - FSE_repeat_check, /**< Can use the previous table but it must be checked */ - FSE_repeat_valid /**< Can use the previous table and it is assumed to be valid */ - } FSE_repeat; - -/* ***************************************** -* FSE symbol compression API -*******************************************/ -/*! - This API consists of small unitary functions, which highly benefit from being inlined. - Hence their body are included in next section. -*/ -typedef struct { - ptrdiff_t value; - const void* stateTable; - const void* symbolTT; - unsigned stateLog; -} FSE_CState_t; - -static void FSE_initCState(FSE_CState_t* CStatePtr, const FSE_CTable* ct); - -static void FSE_encodeSymbol(BIT_CStream_t* bitC, FSE_CState_t* CStatePtr, unsigned symbol); - -static void FSE_flushCState(BIT_CStream_t* bitC, const FSE_CState_t* CStatePtr); - -/**< -These functions are inner components of FSE_compress_usingCTable(). -They allow the creation of custom streams, mixing multiple tables and bit sources. - -A key property to keep in mind is that encoding and decoding are done **in reverse direction**. -So the first symbol you will encode is the last you will decode, like a LIFO stack. - -You will need a few variables to track your CStream. They are : - -FSE_CTable ct; // Provided by FSE_buildCTable() -BIT_CStream_t bitStream; // bitStream tracking structure -FSE_CState_t state; // State tracking structure (can have several) - - -The first thing to do is to init bitStream and state. - size_t errorCode = BIT_initCStream(&bitStream, dstBuffer, maxDstSize); - FSE_initCState(&state, ct); - -Note that BIT_initCStream() can produce an error code, so its result should be tested, using FSE_isError(); -You can then encode your input data, byte after byte. -FSE_encodeSymbol() outputs a maximum of 'tableLog' bits at a time. -Remember decoding will be done in reverse direction. - FSE_encodeByte(&bitStream, &state, symbol); - -At any time, you can also add any bit sequence. -Note : maximum allowed nbBits is 25, for compatibility with 32-bits decoders - BIT_addBits(&bitStream, bitField, nbBits); - -The above methods don't commit data to memory, they just store it into local register, for speed. -Local register size is 64-bits on 64-bits systems, 32-bits on 32-bits systems (size_t). -Writing data to memory is a manual operation, performed by the flushBits function. - BIT_flushBits(&bitStream); - -Your last FSE encoding operation shall be to flush your last state value(s). - FSE_flushState(&bitStream, &state); - -Finally, you must close the bitStream. -The function returns the size of CStream in bytes. -If data couldn't fit into dstBuffer, it will return a 0 ( == not compressible) -If there is an error, it returns an errorCode (which can be tested using FSE_isError()). - size_t size = BIT_closeCStream(&bitStream); -*/ - - -/* ***************************************** -* FSE symbol decompression API -*******************************************/ -typedef struct { - size_t state; - const void* table; /* precise table may vary, depending on U16 */ -} FSE_DState_t; - - -static void FSE_initDState(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD, const FSE_DTable* dt); - -static unsigned char FSE_decodeSymbol(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD); - -static unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr); - -/**< -Let's now decompose FSE_decompress_usingDTable() into its unitary components. -You will decode FSE-encoded symbols from the bitStream, -and also any other bitFields you put in, **in reverse order**. - -You will need a few variables to track your bitStream. They are : - -BIT_DStream_t DStream; // Stream context -FSE_DState_t DState; // State context. Multiple ones are possible -FSE_DTable* DTablePtr; // Decoding table, provided by FSE_buildDTable() - -The first thing to do is to init the bitStream. - errorCode = BIT_initDStream(&DStream, srcBuffer, srcSize); - -You should then retrieve your initial state(s) -(in reverse flushing order if you have several ones) : - errorCode = FSE_initDState(&DState, &DStream, DTablePtr); - -You can then decode your data, symbol after symbol. -For information the maximum number of bits read by FSE_decodeSymbol() is 'tableLog'. -Keep in mind that symbols are decoded in reverse order, like a LIFO stack (last in, first out). - unsigned char symbol = FSE_decodeSymbol(&DState, &DStream); - -You can retrieve any bitfield you eventually stored into the bitStream (in reverse order) -Note : maximum allowed nbBits is 25, for 32-bits compatibility - size_t bitField = BIT_readBits(&DStream, nbBits); - -All above operations only read from local register (which size depends on size_t). -Refueling the register from memory is manually performed by the reload method. - endSignal = FSE_reloadDStream(&DStream); - -BIT_reloadDStream() result tells if there is still some more data to read from DStream. -BIT_DStream_unfinished : there is still some data left into the DStream. -BIT_DStream_endOfBuffer : Dstream reached end of buffer. Its container may no longer be completely filled. -BIT_DStream_completed : Dstream reached its exact end, corresponding in general to decompression completed. -BIT_DStream_tooFar : Dstream went too far. Decompression result is corrupted. - -When reaching end of buffer (BIT_DStream_endOfBuffer), progress slowly, notably if you decode multiple symbols per loop, -to properly detect the exact end of stream. -After each decoded symbol, check if DStream is fully consumed using this simple test : - BIT_reloadDStream(&DStream) >= BIT_DStream_completed - -When it's done, verify decompression is fully completed, by checking both DStream and the relevant states. -Checking if DStream has reached its end is performed by : - BIT_endOfDStream(&DStream); -Check also the states. There might be some symbols left there, if some high probability ones (>50%) are possible. - FSE_endOfDState(&DState); -*/ - - -/* ***************************************** -* FSE unsafe API -*******************************************/ -static unsigned char FSE_decodeSymbolFast(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD); -/* faster, but works only if nbBits is always >= 1 (otherwise, result will be corrupted) */ - - -/* ***************************************** -* Implementation of inlined functions -*******************************************/ -typedef struct { - int deltaFindState; - U32 deltaNbBits; -} FSE_symbolCompressionTransform; /* total 8 bytes */ - -MEM_STATIC void FSE_initCState(FSE_CState_t* statePtr, const FSE_CTable* ct) -{ - const void* ptr = ct; - const U16* u16ptr = (const U16*) ptr; - const U32 tableLog = MEM_read16(ptr); - statePtr->value = (ptrdiff_t)1<stateTable = u16ptr+2; - statePtr->symbolTT = ct + 1 + (tableLog ? (1<<(tableLog-1)) : 1); - statePtr->stateLog = tableLog; -} - - -/*! FSE_initCState2() : -* Same as FSE_initCState(), but the first symbol to include (which will be the last to be read) -* uses the smallest state value possible, saving the cost of this symbol */ -MEM_STATIC void FSE_initCState2(FSE_CState_t* statePtr, const FSE_CTable* ct, U32 symbol) -{ - FSE_initCState(statePtr, ct); - { const FSE_symbolCompressionTransform symbolTT = ((const FSE_symbolCompressionTransform*)(statePtr->symbolTT))[symbol]; - const U16* stateTable = (const U16*)(statePtr->stateTable); - U32 nbBitsOut = (U32)((symbolTT.deltaNbBits + (1<<15)) >> 16); - statePtr->value = (nbBitsOut << 16) - symbolTT.deltaNbBits; - statePtr->value = stateTable[(statePtr->value >> nbBitsOut) + symbolTT.deltaFindState]; - } -} - -MEM_STATIC void FSE_encodeSymbol(BIT_CStream_t* bitC, FSE_CState_t* statePtr, unsigned symbol) -{ - FSE_symbolCompressionTransform const symbolTT = ((const FSE_symbolCompressionTransform*)(statePtr->symbolTT))[symbol]; - const U16* const stateTable = (const U16*)(statePtr->stateTable); - U32 const nbBitsOut = (U32)((statePtr->value + symbolTT.deltaNbBits) >> 16); - BIT_addBits(bitC, statePtr->value, nbBitsOut); - statePtr->value = stateTable[ (statePtr->value >> nbBitsOut) + symbolTT.deltaFindState]; -} - -MEM_STATIC void FSE_flushCState(BIT_CStream_t* bitC, const FSE_CState_t* statePtr) -{ - BIT_addBits(bitC, statePtr->value, statePtr->stateLog); - BIT_flushBits(bitC); -} - - -/* FSE_getMaxNbBits() : - * Approximate maximum cost of a symbol, in bits. - * Fractional get rounded up (i.e : a symbol with a normalized frequency of 3 gives the same result as a frequency of 2) - * note 1 : assume symbolValue is valid (<= maxSymbolValue) - * note 2 : if freq[symbolValue]==0, @return a fake cost of tableLog+1 bits */ -MEM_STATIC U32 FSE_getMaxNbBits(const void* symbolTTPtr, U32 symbolValue) -{ - const FSE_symbolCompressionTransform* symbolTT = (const FSE_symbolCompressionTransform*) symbolTTPtr; - return (symbolTT[symbolValue].deltaNbBits + ((1<<16)-1)) >> 16; -} - -/* FSE_bitCost() : - * Approximate symbol cost, as fractional value, using fixed-point format (accuracyLog fractional bits) - * note 1 : assume symbolValue is valid (<= maxSymbolValue) - * note 2 : if freq[symbolValue]==0, @return a fake cost of tableLog+1 bits */ -MEM_STATIC U32 FSE_bitCost(const void* symbolTTPtr, U32 tableLog, U32 symbolValue, U32 accuracyLog) -{ - const FSE_symbolCompressionTransform* symbolTT = (const FSE_symbolCompressionTransform*) symbolTTPtr; - U32 const minNbBits = symbolTT[symbolValue].deltaNbBits >> 16; - U32 const threshold = (minNbBits+1) << 16; - assert(tableLog < 16); - assert(accuracyLog < 31-tableLog); /* ensure enough room for renormalization double shift */ - { U32 const tableSize = 1 << tableLog; - U32 const deltaFromThreshold = threshold - (symbolTT[symbolValue].deltaNbBits + tableSize); - U32 const normalizedDeltaFromThreshold = (deltaFromThreshold << accuracyLog) >> tableLog; /* linear interpolation (very approximate) */ - U32 const bitMultiplier = 1 << accuracyLog; - assert(symbolTT[symbolValue].deltaNbBits + tableSize <= threshold); - assert(normalizedDeltaFromThreshold <= bitMultiplier); - return (minNbBits+1)*bitMultiplier - normalizedDeltaFromThreshold; - } -} - - -/* ====== Decompression ====== */ - -typedef struct { - U16 tableLog; - U16 fastMode; -} FSE_DTableHeader; /* sizeof U32 */ - -typedef struct -{ - unsigned short newState; - unsigned char symbol; - unsigned char nbBits; -} FSE_decode_t; /* size == U32 */ - -MEM_STATIC void FSE_initDState(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD, const FSE_DTable* dt) -{ - const void* ptr = dt; - const FSE_DTableHeader* const DTableH = (const FSE_DTableHeader*)ptr; - DStatePtr->state = BIT_readBits(bitD, DTableH->tableLog); - BIT_reloadDStream(bitD); - DStatePtr->table = dt + 1; -} - -MEM_STATIC BYTE FSE_peekSymbol(const FSE_DState_t* DStatePtr) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - return DInfo.symbol; -} - -MEM_STATIC void FSE_updateState(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - size_t const lowBits = BIT_readBits(bitD, nbBits); - DStatePtr->state = DInfo.newState + lowBits; -} - -MEM_STATIC BYTE FSE_decodeSymbol(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - BYTE const symbol = DInfo.symbol; - size_t const lowBits = BIT_readBits(bitD, nbBits); - - DStatePtr->state = DInfo.newState + lowBits; - return symbol; -} - -/*! FSE_decodeSymbolFast() : - unsafe, only works if no symbol has a probability > 50% */ -MEM_STATIC BYTE FSE_decodeSymbolFast(FSE_DState_t* DStatePtr, BIT_DStream_t* bitD) -{ - FSE_decode_t const DInfo = ((const FSE_decode_t*)(DStatePtr->table))[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - BYTE const symbol = DInfo.symbol; - size_t const lowBits = BIT_readBitsFast(bitD, nbBits); - - DStatePtr->state = DInfo.newState + lowBits; - return symbol; -} - -MEM_STATIC unsigned FSE_endOfDState(const FSE_DState_t* DStatePtr) -{ - return DStatePtr->state == 0; -} - - - -#ifndef FSE_COMMONDEFS_ONLY - -/* ************************************************************** -* Tuning parameters -****************************************************************/ -/*!MEMORY_USAGE : -* Memory usage formula : N->2^N Bytes (examples : 10 -> 1KB; 12 -> 4KB ; 16 -> 64KB; 20 -> 1MB; etc.) -* Increasing memory usage improves compression ratio -* Reduced memory usage can improve speed, due to cache effect -* Recommended max value is 14, for 16KB, which nicely fits into Intel x86 L1 cache */ -#ifndef FSE_MAX_MEMORY_USAGE -# define FSE_MAX_MEMORY_USAGE 14 -#endif -#ifndef FSE_DEFAULT_MEMORY_USAGE -# define FSE_DEFAULT_MEMORY_USAGE 13 -#endif -#if (FSE_DEFAULT_MEMORY_USAGE > FSE_MAX_MEMORY_USAGE) -# error "FSE_DEFAULT_MEMORY_USAGE must be <= FSE_MAX_MEMORY_USAGE" -#endif - -/*!FSE_MAX_SYMBOL_VALUE : -* Maximum symbol value authorized. -* Required for proper stack allocation */ -#ifndef FSE_MAX_SYMBOL_VALUE -# define FSE_MAX_SYMBOL_VALUE 255 -#endif - -/* ************************************************************** -* template functions type & suffix -****************************************************************/ -#define FSE_FUNCTION_TYPE BYTE -#define FSE_FUNCTION_EXTENSION -#define FSE_DECODE_TYPE FSE_decode_t - - -#endif /* !FSE_COMMONDEFS_ONLY */ - - -/* *************************************************************** -* Constants -*****************************************************************/ -#define FSE_MAX_TABLELOG (FSE_MAX_MEMORY_USAGE-2) -#define FSE_MAX_TABLESIZE (1U< FSE_TABLELOG_ABSOLUTE_MAX -# error "FSE_MAX_TABLELOG > FSE_TABLELOG_ABSOLUTE_MAX is not supported" -#endif - -#define FSE_TABLESTEP(tableSize) (((tableSize)>>1) + ((tableSize)>>3) + 3) - - -#endif /* FSE_STATIC_LINKING_ONLY */ - - -#if defined (__cplusplus) -} -#endif -/**** ended inlining fse.h ****/ -#define HUF_STATIC_LINKING_ONLY /* HUF_TABLELOG_ABSOLUTEMAX */ -/**** start inlining huf.h ****/ -/* ****************************************************************** - * huff0 huffman codec, - * part of Finite State Entropy library - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - Source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - -#if defined (__cplusplus) -extern "C" { -#endif - -#ifndef HUF_H_298734234 -#define HUF_H_298734234 - -/* *** Dependencies *** */ -/**** skipping file: zstd_deps.h ****/ - - -/* *** library symbols visibility *** */ -/* Note : when linking with -fvisibility=hidden on gcc, or by default on Visual, - * HUF symbols remain "private" (internal symbols for library only). - * Set macro FSE_DLL_EXPORT to 1 if you want HUF symbols visible on DLL interface */ -#if defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) && defined(__GNUC__) && (__GNUC__ >= 4) -# define HUF_PUBLIC_API __attribute__ ((visibility ("default"))) -#elif defined(FSE_DLL_EXPORT) && (FSE_DLL_EXPORT==1) /* Visual expected */ -# define HUF_PUBLIC_API __declspec(dllexport) -#elif defined(FSE_DLL_IMPORT) && (FSE_DLL_IMPORT==1) -# define HUF_PUBLIC_API __declspec(dllimport) /* not required, just to generate faster code (saves a function pointer load from IAT and an indirect jump) */ -#else -# define HUF_PUBLIC_API -#endif - - -/* ========================== */ -/* *** simple functions *** */ -/* ========================== */ - -/** HUF_compress() : - * Compress content from buffer 'src', of size 'srcSize', into buffer 'dst'. - * 'dst' buffer must be already allocated. - * Compression runs faster if `dstCapacity` >= HUF_compressBound(srcSize). - * `srcSize` must be <= `HUF_BLOCKSIZE_MAX` == 128 KB. - * @return : size of compressed data (<= `dstCapacity`). - * Special values : if return == 0, srcData is not compressible => Nothing is stored within dst !!! - * if HUF_isError(return), compression failed (more details using HUF_getErrorName()) - */ -HUF_PUBLIC_API size_t HUF_compress(void* dst, size_t dstCapacity, - const void* src, size_t srcSize); - -/** HUF_decompress() : - * Decompress HUF data from buffer 'cSrc', of size 'cSrcSize', - * into already allocated buffer 'dst', of minimum size 'dstSize'. - * `originalSize` : **must** be the ***exact*** size of original (uncompressed) data. - * Note : in contrast with FSE, HUF_decompress can regenerate - * RLE (cSrcSize==1) and uncompressed (cSrcSize==dstSize) data, - * because it knows size to regenerate (originalSize). - * @return : size of regenerated data (== originalSize), - * or an error code, which can be tested using HUF_isError() - */ -HUF_PUBLIC_API size_t HUF_decompress(void* dst, size_t originalSize, - const void* cSrc, size_t cSrcSize); - - -/* *** Tool functions *** */ -#define HUF_BLOCKSIZE_MAX (128 * 1024) /**< maximum input size for a single block compressed with HUF_compress */ -HUF_PUBLIC_API size_t HUF_compressBound(size_t size); /**< maximum compressed size (worst case) */ - -/* Error Management */ -HUF_PUBLIC_API unsigned HUF_isError(size_t code); /**< tells if a return value is an error code */ -HUF_PUBLIC_API const char* HUF_getErrorName(size_t code); /**< provides error code string (useful for debugging) */ - - -/* *** Advanced function *** */ - -/** HUF_compress2() : - * Same as HUF_compress(), but offers control over `maxSymbolValue` and `tableLog`. - * `maxSymbolValue` must be <= HUF_SYMBOLVALUE_MAX . - * `tableLog` must be `<= HUF_TABLELOG_MAX` . */ -HUF_PUBLIC_API size_t HUF_compress2 (void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog); - -/** HUF_compress4X_wksp() : - * Same as HUF_compress2(), but uses externally allocated `workSpace`. - * `workspace` must have minimum alignment of 4, and be at least as large as HUF_WORKSPACE_SIZE */ -#define HUF_WORKSPACE_SIZE ((6 << 10) + 256) -#define HUF_WORKSPACE_SIZE_U32 (HUF_WORKSPACE_SIZE / sizeof(U32)) -HUF_PUBLIC_API size_t HUF_compress4X_wksp (void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog, - void* workSpace, size_t wkspSize); - -#endif /* HUF_H_298734234 */ - -/* ****************************************************************** - * WARNING !! - * The following section contains advanced and experimental definitions - * which shall never be used in the context of a dynamic library, - * because they are not guaranteed to remain stable in the future. - * Only consider them in association with static linking. - * *****************************************************************/ -#if defined(HUF_STATIC_LINKING_ONLY) && !defined(HUF_H_HUF_STATIC_LINKING_ONLY) -#define HUF_H_HUF_STATIC_LINKING_ONLY - -/* *** Dependencies *** */ -/**** skipping file: mem.h ****/ -#define FSE_STATIC_LINKING_ONLY -/**** skipping file: fse.h ****/ - - -/* *** Constants *** */ -#define HUF_TABLELOG_MAX 12 /* max runtime value of tableLog (due to static allocation); can be modified up to HUF_ABSOLUTEMAX_TABLELOG */ -#define HUF_TABLELOG_DEFAULT 11 /* default tableLog value when none specified */ -#define HUF_SYMBOLVALUE_MAX 255 - -#define HUF_TABLELOG_ABSOLUTEMAX 15 /* absolute limit of HUF_MAX_TABLELOG. Beyond that value, code does not work */ -#if (HUF_TABLELOG_MAX > HUF_TABLELOG_ABSOLUTEMAX) -# error "HUF_TABLELOG_MAX is too large !" -#endif - - -/* **************************************** -* Static allocation -******************************************/ -/* HUF buffer bounds */ -#define HUF_CTABLEBOUND 129 -#define HUF_BLOCKBOUND(size) (size + (size>>8) + 8) /* only true when incompressible is pre-filtered with fast heuristic */ -#define HUF_COMPRESSBOUND(size) (HUF_CTABLEBOUND + HUF_BLOCKBOUND(size)) /* Macro version, useful for static allocation */ - -/* static allocation of HUF's Compression Table */ -/* this is a private definition, just exposed for allocation and strict aliasing purpose. never EVER access its members directly */ -struct HUF_CElt_s { - U16 val; - BYTE nbBits; -}; /* typedef'd to HUF_CElt */ -typedef struct HUF_CElt_s HUF_CElt; /* consider it an incomplete type */ -#define HUF_CTABLE_SIZE_U32(maxSymbolValue) ((maxSymbolValue)+1) /* Use tables of U32, for proper alignment */ -#define HUF_CTABLE_SIZE(maxSymbolValue) (HUF_CTABLE_SIZE_U32(maxSymbolValue) * sizeof(U32)) -#define HUF_CREATE_STATIC_CTABLE(name, maxSymbolValue) \ - HUF_CElt name[HUF_CTABLE_SIZE_U32(maxSymbolValue)] /* no final ; */ - -/* static allocation of HUF's DTable */ -typedef U32 HUF_DTable; -#define HUF_DTABLE_SIZE(maxTableLog) (1 + (1<<(maxTableLog))) -#define HUF_CREATE_STATIC_DTABLEX1(DTable, maxTableLog) \ - HUF_DTable DTable[HUF_DTABLE_SIZE((maxTableLog)-1)] = { ((U32)((maxTableLog)-1) * 0x01000001) } -#define HUF_CREATE_STATIC_DTABLEX2(DTable, maxTableLog) \ - HUF_DTable DTable[HUF_DTABLE_SIZE(maxTableLog)] = { ((U32)(maxTableLog) * 0x01000001) } - - -/* **************************************** -* Advanced decompression functions -******************************************/ -size_t HUF_decompress4X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< single-symbol decoder */ -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< double-symbols decoder */ -#endif - -size_t HUF_decompress4X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< decodes RLE and uncompressed */ -size_t HUF_decompress4X_hufOnly(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< considers RLE and uncompressed as errors */ -size_t HUF_decompress4X_hufOnly_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /**< considers RLE and uncompressed as errors */ -size_t HUF_decompress4X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< single-symbol decoder */ -size_t HUF_decompress4X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /**< single-symbol decoder */ -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< double-symbols decoder */ -size_t HUF_decompress4X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /**< double-symbols decoder */ -#endif - - -/* **************************************** - * HUF detailed API - * ****************************************/ - -/*! HUF_compress() does the following: - * 1. count symbol occurrence from source[] into table count[] using FSE_count() (exposed within "fse.h") - * 2. (optional) refine tableLog using HUF_optimalTableLog() - * 3. build Huffman table from count using HUF_buildCTable() - * 4. save Huffman table to memory buffer using HUF_writeCTable() - * 5. encode the data stream using HUF_compress4X_usingCTable() - * - * The following API allows targeting specific sub-functions for advanced tasks. - * For example, it's possible to compress several blocks using the same 'CTable', - * or to save and regenerate 'CTable' using external methods. - */ -unsigned HUF_optimalTableLog(unsigned maxTableLog, size_t srcSize, unsigned maxSymbolValue); -size_t HUF_buildCTable (HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue, unsigned maxNbBits); /* @return : maxNbBits; CTable and count can overlap. In which case, CTable will overwrite count content */ -size_t HUF_writeCTable (void* dst, size_t maxDstSize, const HUF_CElt* CTable, unsigned maxSymbolValue, unsigned huffLog); -size_t HUF_compress4X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable); -size_t HUF_estimateCompressedSize(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue); -int HUF_validateCTable(const HUF_CElt* CTable, const unsigned* count, unsigned maxSymbolValue); - -typedef enum { - HUF_repeat_none, /**< Cannot use the previous table */ - HUF_repeat_check, /**< Can use the previous table but it must be checked. Note : The previous table must have been constructed by HUF_compress{1, 4}X_repeat */ - HUF_repeat_valid /**< Can use the previous table and it is assumed to be valid */ - } HUF_repeat; -/** HUF_compress4X_repeat() : - * Same as HUF_compress4X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none. - * If it uses hufTable it does not modify hufTable or repeat. - * If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used. - * If preferRepeat then the old table will always be used if valid. */ -size_t HUF_compress4X_repeat(void* dst, size_t dstSize, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog, - void* workSpace, size_t wkspSize, /**< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */ - HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2); - -/** HUF_buildCTable_wksp() : - * Same as HUF_buildCTable(), but using externally allocated scratch buffer. - * `workSpace` must be aligned on 4-bytes boundaries, and its size must be >= HUF_CTABLE_WORKSPACE_SIZE. - */ -#define HUF_CTABLE_WORKSPACE_SIZE_U32 (2*HUF_SYMBOLVALUE_MAX +1 +1) -#define HUF_CTABLE_WORKSPACE_SIZE (HUF_CTABLE_WORKSPACE_SIZE_U32 * sizeof(unsigned)) -size_t HUF_buildCTable_wksp (HUF_CElt* tree, - const unsigned* count, U32 maxSymbolValue, U32 maxNbBits, - void* workSpace, size_t wkspSize); - -/*! HUF_readStats() : - * Read compact Huffman tree, saved by HUF_writeCTable(). - * `huffWeight` is destination buffer. - * @return : size read from `src` , or an error Code . - * Note : Needed by HUF_readCTable() and HUF_readDTableXn() . */ -size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, - U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize); - -/*! HUF_readStats_wksp() : - * Same as HUF_readStats() but takes an external workspace which must be - * 4-byte aligned and its size must be >= HUF_READ_STATS_WORKSPACE_SIZE. - * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0. - */ -#define HUF_READ_STATS_WORKSPACE_SIZE_U32 FSE_DECOMPRESS_WKSP_SIZE_U32(6, HUF_TABLELOG_MAX-1) -#define HUF_READ_STATS_WORKSPACE_SIZE (HUF_READ_STATS_WORKSPACE_SIZE_U32 * sizeof(unsigned)) -size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize, - U32* rankStats, U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workspace, size_t wkspSize, - int bmi2); - -/** HUF_readCTable() : - * Loading a CTable saved with HUF_writeCTable() */ -size_t HUF_readCTable (HUF_CElt* CTable, unsigned* maxSymbolValuePtr, const void* src, size_t srcSize, unsigned *hasZeroWeights); - -/** HUF_getNbBits() : - * Read nbBits from CTable symbolTable, for symbol `symbolValue` presumed <= HUF_SYMBOLVALUE_MAX - * Note 1 : is not inlined, as HUF_CElt definition is private - * Note 2 : const void* used, so that it can provide a statically allocated table as argument (which uses type U32) */ -U32 HUF_getNbBits(const void* symbolTable, U32 symbolValue); - -/* - * HUF_decompress() does the following: - * 1. select the decompression algorithm (X1, X2) based on pre-computed heuristics - * 2. build Huffman table from save, using HUF_readDTableX?() - * 3. decode 1 or 4 segments in parallel using HUF_decompress?X?_usingDTable() - */ - -/** HUF_selectDecoder() : - * Tells which decoder is likely to decode faster, - * based on a set of pre-computed metrics. - * @return : 0==HUF_decompress4X1, 1==HUF_decompress4X2 . - * Assumption : 0 < dstSize <= 128 KB */ -U32 HUF_selectDecoder (size_t dstSize, size_t cSrcSize); - -/** - * The minimum workspace size for the `workSpace` used in - * HUF_readDTableX1_wksp() and HUF_readDTableX2_wksp(). - * - * The space used depends on HUF_TABLELOG_MAX, ranging from ~1500 bytes when - * HUF_TABLE_LOG_MAX=12 to ~1850 bytes when HUF_TABLE_LOG_MAX=15. - * Buffer overflow errors may potentially occur if code modifications result in - * a required workspace size greater than that specified in the following - * macro. - */ -#define HUF_DECOMPRESS_WORKSPACE_SIZE (2 << 10) -#define HUF_DECOMPRESS_WORKSPACE_SIZE_U32 (HUF_DECOMPRESS_WORKSPACE_SIZE / sizeof(U32)) - -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_readDTableX1 (HUF_DTable* DTable, const void* src, size_t srcSize); -size_t HUF_readDTableX1_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize); -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_readDTableX2 (HUF_DTable* DTable, const void* src, size_t srcSize); -size_t HUF_readDTableX2_wksp (HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize); -#endif - -size_t HUF_decompress4X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress4X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif - - -/* ====================== */ -/* single stream variants */ -/* ====================== */ - -size_t HUF_compress1X (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog); -size_t HUF_compress1X_wksp (void* dst, size_t dstSize, const void* src, size_t srcSize, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize); /**< `workSpace` must be a table of at least HUF_WORKSPACE_SIZE_U32 unsigned */ -size_t HUF_compress1X_usingCTable(void* dst, size_t dstSize, const void* src, size_t srcSize, const HUF_CElt* CTable); -/** HUF_compress1X_repeat() : - * Same as HUF_compress1X_wksp(), but considers using hufTable if *repeat != HUF_repeat_none. - * If it uses hufTable it does not modify hufTable or repeat. - * If it doesn't, it sets *repeat = HUF_repeat_none, and it sets hufTable to the table used. - * If preferRepeat then the old table will always be used if valid. */ -size_t HUF_compress1X_repeat(void* dst, size_t dstSize, - const void* src, size_t srcSize, - unsigned maxSymbolValue, unsigned tableLog, - void* workSpace, size_t wkspSize, /**< `workSpace` must be aligned on 4-bytes boundaries, `wkspSize` must be >= HUF_WORKSPACE_SIZE */ - HUF_CElt* hufTable, HUF_repeat* repeat, int preferRepeat, int bmi2); - -size_t HUF_decompress1X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* single-symbol decoder */ -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /* double-symbol decoder */ -#endif - -size_t HUF_decompress1X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); -size_t HUF_decompress1X_DCtx_wksp (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< single-symbol decoder */ -size_t HUF_decompress1X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /**< single-symbol decoder */ -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress1X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); /**< double-symbols decoder */ -size_t HUF_decompress1X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize); /**< double-symbols decoder */ -#endif - -size_t HUF_decompress1X_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); /**< automatic selection of sing or double symbol decoder, based on DTable */ -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress1X2_usingDTable(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable); -#endif - -/* BMI2 variants. - * If the CPU has BMI2 support, pass bmi2=1, otherwise pass bmi2=0. - */ -size_t HUF_decompress1X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_DCtx_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2); -#endif -size_t HUF_decompress4X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2); -size_t HUF_decompress4X_hufOnly_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2); -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2); -#endif - -#endif /* HUF_STATIC_LINKING_ONLY */ - -#if defined (__cplusplus) -} -#endif -/**** ended inlining huf.h ****/ - - -/*=== Version ===*/ -unsigned FSE_versionNumber(void) { return FSE_VERSION_NUMBER; } - - -/*=== Error Management ===*/ -unsigned FSE_isError(size_t code) { return ERR_isError(code); } -const char* FSE_getErrorName(size_t code) { return ERR_getErrorName(code); } - -unsigned HUF_isError(size_t code) { return ERR_isError(code); } -const char* HUF_getErrorName(size_t code) { return ERR_getErrorName(code); } - - -/*-************************************************************** -* FSE NCount encoding-decoding -****************************************************************/ -static U32 FSE_ctz(U32 val) -{ - assert(val != 0); - { -# if defined(_MSC_VER) /* Visual */ - unsigned long r=0; - return _BitScanForward(&r, val) ? (unsigned)r : 0; -# elif defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */ - return __builtin_ctz(val); -# elif defined(__ICCARM__) /* IAR Intrinsic */ - return __CTZ(val); -# else /* Software version */ - U32 count = 0; - while ((val & 1) == 0) { - val >>= 1; - ++count; - } - return count; -# endif - } -} - -FORCE_INLINE_TEMPLATE -size_t FSE_readNCount_body(short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - const BYTE* const istart = (const BYTE*) headerBuffer; - const BYTE* const iend = istart + hbSize; - const BYTE* ip = istart; - int nbBits; - int remaining; - int threshold; - U32 bitStream; - int bitCount; - unsigned charnum = 0; - unsigned const maxSV1 = *maxSVPtr + 1; - int previous0 = 0; - - if (hbSize < 8) { - /* This function only works when hbSize >= 8 */ - char buffer[8] = {0}; - ZSTD_memcpy(buffer, headerBuffer, hbSize); - { size_t const countSize = FSE_readNCount(normalizedCounter, maxSVPtr, tableLogPtr, - buffer, sizeof(buffer)); - if (FSE_isError(countSize)) return countSize; - if (countSize > hbSize) return ERROR(corruption_detected); - return countSize; - } } - assert(hbSize >= 8); - - /* init */ - ZSTD_memset(normalizedCounter, 0, (*maxSVPtr+1) * sizeof(normalizedCounter[0])); /* all symbols not present in NCount have a frequency of 0 */ - bitStream = MEM_readLE32(ip); - nbBits = (bitStream & 0xF) + FSE_MIN_TABLELOG; /* extract tableLog */ - if (nbBits > FSE_TABLELOG_ABSOLUTE_MAX) return ERROR(tableLog_tooLarge); - bitStream >>= 4; - bitCount = 4; - *tableLogPtr = nbBits; - remaining = (1<> 1; - while (repeats >= 12) { - charnum += 3 * 12; - if (LIKELY(ip <= iend-7)) { - ip += 3; - } else { - bitCount -= (int)(8 * (iend - 7 - ip)); - bitCount &= 31; - ip = iend - 4; - } - bitStream = MEM_readLE32(ip) >> bitCount; - repeats = FSE_ctz(~bitStream | 0x80000000) >> 1; - } - charnum += 3 * repeats; - bitStream >>= 2 * repeats; - bitCount += 2 * repeats; - - /* Add the final repeat which isn't 0b11. */ - assert((bitStream & 3) < 3); - charnum += bitStream & 3; - bitCount += 2; - - /* This is an error, but break and return an error - * at the end, because returning out of a loop makes - * it harder for the compiler to optimize. - */ - if (charnum >= maxSV1) break; - - /* We don't need to set the normalized count to 0 - * because we already memset the whole buffer to 0. - */ - - if (LIKELY(ip <= iend-7) || (ip + (bitCount>>3) <= iend-4)) { - assert((bitCount >> 3) <= 3); /* For first condition to work */ - ip += bitCount>>3; - bitCount &= 7; - } else { - bitCount -= (int)(8 * (iend - 4 - ip)); - bitCount &= 31; - ip = iend - 4; - } - bitStream = MEM_readLE32(ip) >> bitCount; - } - { - int const max = (2*threshold-1) - remaining; - int count; - - if ((bitStream & (threshold-1)) < (U32)max) { - count = bitStream & (threshold-1); - bitCount += nbBits-1; - } else { - count = bitStream & (2*threshold-1); - if (count >= threshold) count -= max; - bitCount += nbBits; - } - - count--; /* extra accuracy */ - /* When it matters (small blocks), this is a - * predictable branch, because we don't use -1. - */ - if (count >= 0) { - remaining -= count; - } else { - assert(count == -1); - remaining += count; - } - normalizedCounter[charnum++] = (short)count; - previous0 = !count; - - assert(threshold > 1); - if (remaining < threshold) { - /* This branch can be folded into the - * threshold update condition because we - * know that threshold > 1. - */ - if (remaining <= 1) break; - nbBits = BIT_highbit32(remaining) + 1; - threshold = 1 << (nbBits - 1); - } - if (charnum >= maxSV1) break; - - if (LIKELY(ip <= iend-7) || (ip + (bitCount>>3) <= iend-4)) { - ip += bitCount>>3; - bitCount &= 7; - } else { - bitCount -= (int)(8 * (iend - 4 - ip)); - bitCount &= 31; - ip = iend - 4; - } - bitStream = MEM_readLE32(ip) >> bitCount; - } } - if (remaining != 1) return ERROR(corruption_detected); - /* Only possible when there are too many zeros. */ - if (charnum > maxSV1) return ERROR(maxSymbolValue_tooSmall); - if (bitCount > 32) return ERROR(corruption_detected); - *maxSVPtr = charnum-1; - - ip += (bitCount+7)>>3; - return ip-istart; -} - -/* Avoids the FORCE_INLINE of the _body() function. */ -static size_t FSE_readNCount_body_default( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - return FSE_readNCount_body(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); -} - -#if DYNAMIC_BMI2 -TARGET_ATTRIBUTE("bmi2") static size_t FSE_readNCount_body_bmi2( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - return FSE_readNCount_body(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); -} -#endif - -size_t FSE_readNCount_bmi2( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize, int bmi2) -{ -#if DYNAMIC_BMI2 - if (bmi2) { - return FSE_readNCount_body_bmi2(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); - } -#endif - (void)bmi2; - return FSE_readNCount_body_default(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize); -} - -size_t FSE_readNCount( - short* normalizedCounter, unsigned* maxSVPtr, unsigned* tableLogPtr, - const void* headerBuffer, size_t hbSize) -{ - return FSE_readNCount_bmi2(normalizedCounter, maxSVPtr, tableLogPtr, headerBuffer, hbSize, /* bmi2 */ 0); -} - - -/*! HUF_readStats() : - Read compact Huffman tree, saved by HUF_writeCTable(). - `huffWeight` is destination buffer. - `rankStats` is assumed to be a table of at least HUF_TABLELOG_MAX U32. - @return : size read from `src` , or an error Code . - Note : Needed by HUF_readCTable() and HUF_readDTableX?() . -*/ -size_t HUF_readStats(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize) -{ - U32 wksp[HUF_READ_STATS_WORKSPACE_SIZE_U32]; - return HUF_readStats_wksp(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, wksp, sizeof(wksp), /* bmi2 */ 0); -} - -FORCE_INLINE_TEMPLATE size_t -HUF_readStats_body(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize, - int bmi2) -{ - U32 weightTotal; - const BYTE* ip = (const BYTE*) src; - size_t iSize; - size_t oSize; - - if (!srcSize) return ERROR(srcSize_wrong); - iSize = ip[0]; - /* ZSTD_memset(huffWeight, 0, hwSize); *//* is not necessary, even though some analyzer complain ... */ - - if (iSize >= 128) { /* special header */ - oSize = iSize - 127; - iSize = ((oSize+1)/2); - if (iSize+1 > srcSize) return ERROR(srcSize_wrong); - if (oSize >= hwSize) return ERROR(corruption_detected); - ip += 1; - { U32 n; - for (n=0; n> 4; - huffWeight[n+1] = ip[n/2] & 15; - } } } - else { /* header compressed with FSE (normal case) */ - if (iSize+1 > srcSize) return ERROR(srcSize_wrong); - /* max (hwSize-1) values decoded, as last one is implied */ - oSize = FSE_decompress_wksp_bmi2(huffWeight, hwSize-1, ip+1, iSize, 6, workSpace, wkspSize, bmi2); - if (FSE_isError(oSize)) return oSize; - } - - /* collect weight stats */ - ZSTD_memset(rankStats, 0, (HUF_TABLELOG_MAX + 1) * sizeof(U32)); - weightTotal = 0; - { U32 n; for (n=0; n= HUF_TABLELOG_MAX) return ERROR(corruption_detected); - rankStats[huffWeight[n]]++; - weightTotal += (1 << huffWeight[n]) >> 1; - } } - if (weightTotal == 0) return ERROR(corruption_detected); - - /* get last non-null symbol weight (implied, total must be 2^n) */ - { U32 const tableLog = BIT_highbit32(weightTotal) + 1; - if (tableLog > HUF_TABLELOG_MAX) return ERROR(corruption_detected); - *tableLogPtr = tableLog; - /* determine last weight */ - { U32 const total = 1 << tableLog; - U32 const rest = total - weightTotal; - U32 const verif = 1 << BIT_highbit32(rest); - U32 const lastWeight = BIT_highbit32(rest) + 1; - if (verif != rest) return ERROR(corruption_detected); /* last value must be a clean power of 2 */ - huffWeight[oSize] = (BYTE)lastWeight; - rankStats[lastWeight]++; - } } - - /* check tree construction validity */ - if ((rankStats[1] < 2) || (rankStats[1] & 1)) return ERROR(corruption_detected); /* by construction : at least 2 elts of rank 1, must be even */ - - /* results */ - *nbSymbolsPtr = (U32)(oSize+1); - return iSize+1; -} - -/* Avoids the FORCE_INLINE of the _body() function. */ -static size_t HUF_readStats_body_default(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize) -{ - return HUF_readStats_body(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize, 0); -} - -#if DYNAMIC_BMI2 -static TARGET_ATTRIBUTE("bmi2") size_t HUF_readStats_body_bmi2(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize) -{ - return HUF_readStats_body(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize, 1); -} -#endif - -size_t HUF_readStats_wksp(BYTE* huffWeight, size_t hwSize, U32* rankStats, - U32* nbSymbolsPtr, U32* tableLogPtr, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize, - int bmi2) -{ -#if DYNAMIC_BMI2 - if (bmi2) { - return HUF_readStats_body_bmi2(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize); - } -#endif - (void)bmi2; - return HUF_readStats_body_default(huffWeight, hwSize, rankStats, nbSymbolsPtr, tableLogPtr, src, srcSize, workSpace, wkspSize); -} -/**** ended inlining common/entropy_common.c ****/ -/**** start inlining common/error_private.c ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* The purpose of this file is to have a single list of error strings embedded in binary */ - -/**** skipping file: error_private.h ****/ - -const char* ERR_getErrorString(ERR_enum code) -{ -#ifdef ZSTD_STRIP_ERROR_STRINGS - (void)code; - return "Error strings stripped"; -#else - static const char* const notErrorCode = "Unspecified error code"; - switch( code ) - { - case PREFIX(no_error): return "No error detected"; - case PREFIX(GENERIC): return "Error (generic)"; - case PREFIX(prefix_unknown): return "Unknown frame descriptor"; - case PREFIX(version_unsupported): return "Version not supported"; - case PREFIX(frameParameter_unsupported): return "Unsupported frame parameter"; - case PREFIX(frameParameter_windowTooLarge): return "Frame requires too much memory for decoding"; - case PREFIX(corruption_detected): return "Corrupted block detected"; - case PREFIX(checksum_wrong): return "Restored data doesn't match checksum"; - case PREFIX(parameter_unsupported): return "Unsupported parameter"; - case PREFIX(parameter_outOfBound): return "Parameter is out of bound"; - case PREFIX(init_missing): return "Context should be init first"; - case PREFIX(memory_allocation): return "Allocation error : not enough memory"; - case PREFIX(workSpace_tooSmall): return "workSpace buffer is not large enough"; - case PREFIX(stage_wrong): return "Operation not authorized at current processing stage"; - case PREFIX(tableLog_tooLarge): return "tableLog requires too much memory : unsupported"; - case PREFIX(maxSymbolValue_tooLarge): return "Unsupported max Symbol Value : too large"; - case PREFIX(maxSymbolValue_tooSmall): return "Specified maxSymbolValue is too small"; - case PREFIX(dictionary_corrupted): return "Dictionary is corrupted"; - case PREFIX(dictionary_wrong): return "Dictionary mismatch"; - case PREFIX(dictionaryCreation_failed): return "Cannot create Dictionary from provided samples"; - case PREFIX(dstSize_tooSmall): return "Destination buffer is too small"; - case PREFIX(srcSize_wrong): return "Src size is incorrect"; - case PREFIX(dstBuffer_null): return "Operation on NULL destination buffer"; - /* following error codes are not stable and may be removed or changed in a future version */ - case PREFIX(frameIndex_tooLarge): return "Frame index is too large"; - case PREFIX(seekableIO): return "An I/O error occurred when reading/seeking"; - case PREFIX(dstBuffer_wrong): return "Destination buffer is wrong"; - case PREFIX(srcBuffer_wrong): return "Source buffer is wrong"; - case PREFIX(maxCode): - default: return notErrorCode; - } -#endif -} -/**** ended inlining common/error_private.c ****/ -/**** start inlining common/fse_decompress.c ****/ -/* ****************************************************************** - * FSE : Finite State Entropy decoder - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - FSE source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - Public forum : https://groups.google.com/forum/#!forum/lz4c - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - - -/* ************************************************************** -* Includes -****************************************************************/ -/**** skipping file: debug.h ****/ -/**** skipping file: bitstream.h ****/ -/**** skipping file: compiler.h ****/ -#define FSE_STATIC_LINKING_ONLY -/**** skipping file: fse.h ****/ -/**** skipping file: error_private.h ****/ -#define ZSTD_DEPS_NEED_MALLOC -/**** skipping file: zstd_deps.h ****/ - - -/* ************************************************************** -* Error Management -****************************************************************/ -#define FSE_isError ERR_isError -#define FSE_STATIC_ASSERT(c) DEBUG_STATIC_ASSERT(c) /* use only *after* variable declarations */ - - -/* ************************************************************** -* Templates -****************************************************************/ -/* - designed to be included - for type-specific functions (template emulation in C) - Objective is to write these functions only once, for improved maintenance -*/ - -/* safety checks */ -#ifndef FSE_FUNCTION_EXTENSION -# error "FSE_FUNCTION_EXTENSION must be defined" -#endif -#ifndef FSE_FUNCTION_TYPE -# error "FSE_FUNCTION_TYPE must be defined" -#endif - -/* Function names */ -#define FSE_CAT(X,Y) X##Y -#define FSE_FUNCTION_NAME(X,Y) FSE_CAT(X,Y) -#define FSE_TYPE_NAME(X,Y) FSE_CAT(X,Y) - - -/* Function templates */ -FSE_DTable* FSE_createDTable (unsigned tableLog) -{ - if (tableLog > FSE_TABLELOG_ABSOLUTE_MAX) tableLog = FSE_TABLELOG_ABSOLUTE_MAX; - return (FSE_DTable*)ZSTD_malloc( FSE_DTABLE_SIZE_U32(tableLog) * sizeof (U32) ); -} - -void FSE_freeDTable (FSE_DTable* dt) -{ - ZSTD_free(dt); -} - -static size_t FSE_buildDTable_internal(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog, void* workSpace, size_t wkspSize) -{ - void* const tdPtr = dt+1; /* because *dt is unsigned, 32-bits aligned on 32-bits */ - FSE_DECODE_TYPE* const tableDecode = (FSE_DECODE_TYPE*) (tdPtr); - U16* symbolNext = (U16*)workSpace; - BYTE* spread = (BYTE*)(symbolNext + maxSymbolValue + 1); - - U32 const maxSV1 = maxSymbolValue + 1; - U32 const tableSize = 1 << tableLog; - U32 highThreshold = tableSize-1; - - /* Sanity Checks */ - if (FSE_BUILD_DTABLE_WKSP_SIZE(tableLog, maxSymbolValue) > wkspSize) return ERROR(maxSymbolValue_tooLarge); - if (maxSymbolValue > FSE_MAX_SYMBOL_VALUE) return ERROR(maxSymbolValue_tooLarge); - if (tableLog > FSE_MAX_TABLELOG) return ERROR(tableLog_tooLarge); - - /* Init, lay down lowprob symbols */ - { FSE_DTableHeader DTableH; - DTableH.tableLog = (U16)tableLog; - DTableH.fastMode = 1; - { S16 const largeLimit= (S16)(1 << (tableLog-1)); - U32 s; - for (s=0; s= largeLimit) DTableH.fastMode=0; - symbolNext[s] = normalizedCounter[s]; - } } } - ZSTD_memcpy(dt, &DTableH, sizeof(DTableH)); - } - - /* Spread symbols */ - if (highThreshold == tableSize - 1) { - size_t const tableMask = tableSize-1; - size_t const step = FSE_TABLESTEP(tableSize); - /* First lay down the symbols in order. - * We use a uint64_t to lay down 8 bytes at a time. This reduces branch - * misses since small blocks generally have small table logs, so nearly - * all symbols have counts <= 8. We ensure we have 8 bytes at the end of - * our buffer to handle the over-write. - */ - { - U64 const add = 0x0101010101010101ull; - size_t pos = 0; - U64 sv = 0; - U32 s; - for (s=0; s highThreshold) position = (position + step) & tableMask; /* lowprob area */ - } } - if (position!=0) return ERROR(GENERIC); /* position must reach all cells once, otherwise normalizedCounter is incorrect */ - } - - /* Build Decoding table */ - { U32 u; - for (u=0; utableLog = 0; - DTableH->fastMode = 0; - - cell->newState = 0; - cell->symbol = symbolValue; - cell->nbBits = 0; - - return 0; -} - - -size_t FSE_buildDTable_raw (FSE_DTable* dt, unsigned nbBits) -{ - void* ptr = dt; - FSE_DTableHeader* const DTableH = (FSE_DTableHeader*)ptr; - void* dPtr = dt + 1; - FSE_decode_t* const dinfo = (FSE_decode_t*)dPtr; - const unsigned tableSize = 1 << nbBits; - const unsigned tableMask = tableSize - 1; - const unsigned maxSV1 = tableMask+1; - unsigned s; - - /* Sanity checks */ - if (nbBits < 1) return ERROR(GENERIC); /* min size */ - - /* Build Decoding Table */ - DTableH->tableLog = (U16)nbBits; - DTableH->fastMode = 1; - for (s=0; s sizeof(bitD.bitContainer)*8) /* This test must be static */ - BIT_reloadDStream(&bitD); - - op[1] = FSE_GETSYMBOL(&state2); - - if (FSE_MAX_TABLELOG*4+7 > sizeof(bitD.bitContainer)*8) /* This test must be static */ - { if (BIT_reloadDStream(&bitD) > BIT_DStream_unfinished) { op+=2; break; } } - - op[2] = FSE_GETSYMBOL(&state1); - - if (FSE_MAX_TABLELOG*2+7 > sizeof(bitD.bitContainer)*8) /* This test must be static */ - BIT_reloadDStream(&bitD); - - op[3] = FSE_GETSYMBOL(&state2); - } - - /* tail */ - /* note : BIT_reloadDStream(&bitD) >= FSE_DStream_partiallyFilled; Ends at exactly BIT_DStream_completed */ - while (1) { - if (op>(omax-2)) return ERROR(dstSize_tooSmall); - *op++ = FSE_GETSYMBOL(&state1); - if (BIT_reloadDStream(&bitD)==BIT_DStream_overflow) { - *op++ = FSE_GETSYMBOL(&state2); - break; - } - - if (op>(omax-2)) return ERROR(dstSize_tooSmall); - *op++ = FSE_GETSYMBOL(&state2); - if (BIT_reloadDStream(&bitD)==BIT_DStream_overflow) { - *op++ = FSE_GETSYMBOL(&state1); - break; - } } - - return op-ostart; -} - - -size_t FSE_decompress_usingDTable(void* dst, size_t originalSize, - const void* cSrc, size_t cSrcSize, - const FSE_DTable* dt) -{ - const void* ptr = dt; - const FSE_DTableHeader* DTableH = (const FSE_DTableHeader*)ptr; - const U32 fastMode = DTableH->fastMode; - - /* select fast mode (static) */ - if (fastMode) return FSE_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 1); - return FSE_decompress_usingDTable_generic(dst, originalSize, cSrc, cSrcSize, dt, 0); -} - - -size_t FSE_decompress_wksp(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize) -{ - return FSE_decompress_wksp_bmi2(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, /* bmi2 */ 0); -} - -FORCE_INLINE_TEMPLATE size_t FSE_decompress_wksp_body( - void* dst, size_t dstCapacity, - const void* cSrc, size_t cSrcSize, - unsigned maxLog, void* workSpace, size_t wkspSize, - int bmi2) -{ - const BYTE* const istart = (const BYTE*)cSrc; - const BYTE* ip = istart; - short counting[FSE_MAX_SYMBOL_VALUE+1]; - unsigned tableLog; - unsigned maxSymbolValue = FSE_MAX_SYMBOL_VALUE; - FSE_DTable* const dtable = (FSE_DTable*)workSpace; - - /* normal FSE decoding mode */ - size_t const NCountLength = FSE_readNCount_bmi2(counting, &maxSymbolValue, &tableLog, istart, cSrcSize, bmi2); - if (FSE_isError(NCountLength)) return NCountLength; - if (tableLog > maxLog) return ERROR(tableLog_tooLarge); - assert(NCountLength <= cSrcSize); - ip += NCountLength; - cSrcSize -= NCountLength; - - if (FSE_DECOMPRESS_WKSP_SIZE(tableLog, maxSymbolValue) > wkspSize) return ERROR(tableLog_tooLarge); - workSpace = dtable + FSE_DTABLE_SIZE_U32(tableLog); - wkspSize -= FSE_DTABLE_SIZE(tableLog); - - CHECK_F( FSE_buildDTable_internal(dtable, counting, maxSymbolValue, tableLog, workSpace, wkspSize) ); - - { - const void* ptr = dtable; - const FSE_DTableHeader* DTableH = (const FSE_DTableHeader*)ptr; - const U32 fastMode = DTableH->fastMode; - - /* select fast mode (static) */ - if (fastMode) return FSE_decompress_usingDTable_generic(dst, dstCapacity, ip, cSrcSize, dtable, 1); - return FSE_decompress_usingDTable_generic(dst, dstCapacity, ip, cSrcSize, dtable, 0); - } -} - -/* Avoids the FORCE_INLINE of the _body() function. */ -static size_t FSE_decompress_wksp_body_default(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize) -{ - return FSE_decompress_wksp_body(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, 0); -} - -#if DYNAMIC_BMI2 -TARGET_ATTRIBUTE("bmi2") static size_t FSE_decompress_wksp_body_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize) -{ - return FSE_decompress_wksp_body(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize, 1); -} -#endif - -size_t FSE_decompress_wksp_bmi2(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize, unsigned maxLog, void* workSpace, size_t wkspSize, int bmi2) -{ -#if DYNAMIC_BMI2 - if (bmi2) { - return FSE_decompress_wksp_body_bmi2(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize); - } -#endif - (void)bmi2; - return FSE_decompress_wksp_body_default(dst, dstCapacity, cSrc, cSrcSize, maxLog, workSpace, wkspSize); -} - - -typedef FSE_DTable DTable_max_t[FSE_DTABLE_SIZE_U32(FSE_MAX_TABLELOG)]; - -#ifndef ZSTD_NO_UNUSED_FUNCTIONS -size_t FSE_buildDTable(FSE_DTable* dt, const short* normalizedCounter, unsigned maxSymbolValue, unsigned tableLog) { - U32 wksp[FSE_BUILD_DTABLE_WKSP_SIZE_U32(FSE_TABLELOG_ABSOLUTE_MAX, FSE_MAX_SYMBOL_VALUE)]; - return FSE_buildDTable_wksp(dt, normalizedCounter, maxSymbolValue, tableLog, wksp, sizeof(wksp)); -} - -size_t FSE_decompress(void* dst, size_t dstCapacity, const void* cSrc, size_t cSrcSize) -{ - /* Static analyzer seems unable to understand this table will be properly initialized later */ - U32 wksp[FSE_DECOMPRESS_WKSP_SIZE_U32(FSE_MAX_TABLELOG, FSE_MAX_SYMBOL_VALUE)]; - return FSE_decompress_wksp(dst, dstCapacity, cSrc, cSrcSize, FSE_MAX_TABLELOG, wksp, sizeof(wksp)); -} -#endif - - -#endif /* FSE_COMMONDEFS_ONLY */ -/**** ended inlining common/fse_decompress.c ****/ -/**** start inlining common/zstd_common.c ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - - - -/*-************************************* -* Dependencies -***************************************/ -#define ZSTD_DEPS_NEED_MALLOC -/**** skipping file: zstd_deps.h ****/ -/**** skipping file: error_private.h ****/ -/**** start inlining zstd_internal.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_CCOMMON_H_MODULE -#define ZSTD_CCOMMON_H_MODULE - -/* this module contains definitions which must be identical - * across compression, decompression and dictBuilder. - * It also contains a few functions useful to at least 2 of them - * and which benefit from being inlined */ - -/*-************************************* -* Dependencies -***************************************/ -#if !defined(ZSTD_NO_INTRINSICS) && defined(__ARM_NEON) -#include -#endif -/**** skipping file: compiler.h ****/ -/**** skipping file: mem.h ****/ -/**** skipping file: debug.h ****/ -/**** skipping file: error_private.h ****/ -#define ZSTD_STATIC_LINKING_ONLY -/**** start inlining ../zstd.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ -#if defined (__cplusplus) -extern "C" { -#endif - -#ifndef ZSTD_H_235446 -#define ZSTD_H_235446 - -/* ====== Dependency ======*/ -#include /* INT_MAX */ -#include /* size_t */ - - -/* ===== ZSTDLIB_API : control library symbols visibility ===== */ -#ifndef ZSTDLIB_VISIBILITY -# if defined(__GNUC__) && (__GNUC__ >= 4) -# define ZSTDLIB_VISIBILITY __attribute__ ((visibility ("default"))) -# else -# define ZSTDLIB_VISIBILITY -# endif -#endif -#if defined(ZSTD_DLL_EXPORT) && (ZSTD_DLL_EXPORT==1) -# define ZSTDLIB_API __declspec(dllexport) ZSTDLIB_VISIBILITY -#elif defined(ZSTD_DLL_IMPORT) && (ZSTD_DLL_IMPORT==1) -# define ZSTDLIB_API __declspec(dllimport) ZSTDLIB_VISIBILITY /* It isn't required but allows to generate better code, saving a function pointer load from the IAT and an indirect jump.*/ -#else -# define ZSTDLIB_API ZSTDLIB_VISIBILITY -#endif - - -/******************************************************************************* - Introduction - - zstd, short for Zstandard, is a fast lossless compression algorithm, targeting - real-time compression scenarios at zlib-level and better compression ratios. - The zstd compression library provides in-memory compression and decompression - functions. - - The library supports regular compression levels from 1 up to ZSTD_maxCLevel(), - which is currently 22. Levels >= 20, labeled `--ultra`, should be used with - caution, as they require more memory. The library also offers negative - compression levels, which extend the range of speed vs. ratio preferences. - The lower the level, the faster the speed (at the cost of compression). - - Compression can be done in: - - a single step (described as Simple API) - - a single step, reusing a context (described as Explicit context) - - unbounded multiple steps (described as Streaming compression) - - The compression ratio achievable on small data can be highly improved using - a dictionary. Dictionary compression can be performed in: - - a single step (described as Simple dictionary API) - - a single step, reusing a dictionary (described as Bulk-processing - dictionary API) - - Advanced experimental functions can be accessed using - `#define ZSTD_STATIC_LINKING_ONLY` before including zstd.h. - - Advanced experimental APIs should never be used with a dynamically-linked - library. They are not "stable"; their definitions or signatures may change in - the future. Only static linking is allowed. -*******************************************************************************/ - -/*------ Version ------*/ -#define ZSTD_VERSION_MAJOR 1 -#define ZSTD_VERSION_MINOR 4 -#define ZSTD_VERSION_RELEASE 9 -#define ZSTD_VERSION_NUMBER (ZSTD_VERSION_MAJOR *100*100 + ZSTD_VERSION_MINOR *100 + ZSTD_VERSION_RELEASE) - -/*! ZSTD_versionNumber() : - * Return runtime library version, the value is (MAJOR*100*100 + MINOR*100 + RELEASE). */ -ZSTDLIB_API unsigned ZSTD_versionNumber(void); - -#define ZSTD_LIB_VERSION ZSTD_VERSION_MAJOR.ZSTD_VERSION_MINOR.ZSTD_VERSION_RELEASE -#define ZSTD_QUOTE(str) #str -#define ZSTD_EXPAND_AND_QUOTE(str) ZSTD_QUOTE(str) -#define ZSTD_VERSION_STRING ZSTD_EXPAND_AND_QUOTE(ZSTD_LIB_VERSION) - -/*! ZSTD_versionString() : - * Return runtime library version, like "1.4.5". Requires v1.3.0+. */ -ZSTDLIB_API const char* ZSTD_versionString(void); - -/* ************************************* - * Default constant - ***************************************/ -#ifndef ZSTD_CLEVEL_DEFAULT -# define ZSTD_CLEVEL_DEFAULT 3 -#endif - -/* ************************************* - * Constants - ***************************************/ - -/* All magic numbers are supposed read/written to/from files/memory using little-endian convention */ -#define ZSTD_MAGICNUMBER 0xFD2FB528 /* valid since v0.8.0 */ -#define ZSTD_MAGIC_DICTIONARY 0xEC30A437 /* valid since v0.7.0 */ -#define ZSTD_MAGIC_SKIPPABLE_START 0x184D2A50 /* all 16 values, from 0x184D2A50 to 0x184D2A5F, signal the beginning of a skippable frame */ -#define ZSTD_MAGIC_SKIPPABLE_MASK 0xFFFFFFF0 - -#define ZSTD_BLOCKSIZELOG_MAX 17 -#define ZSTD_BLOCKSIZE_MAX (1<= `ZSTD_compressBound(srcSize)`. - * @return : compressed size written into `dst` (<= `dstCapacity), - * or an error code if it fails (which can be tested using ZSTD_isError()). */ -ZSTDLIB_API size_t ZSTD_compress( void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - int compressionLevel); - -/*! ZSTD_decompress() : - * `compressedSize` : must be the _exact_ size of some number of compressed and/or skippable frames. - * `dstCapacity` is an upper bound of originalSize to regenerate. - * If user cannot imply a maximum upper bound, it's better to use streaming mode to decompress data. - * @return : the number of bytes decompressed into `dst` (<= `dstCapacity`), - * or an errorCode if it fails (which can be tested using ZSTD_isError()). */ -ZSTDLIB_API size_t ZSTD_decompress( void* dst, size_t dstCapacity, - const void* src, size_t compressedSize); - -/*! ZSTD_getFrameContentSize() : requires v1.3.0+ - * `src` should point to the start of a ZSTD encoded frame. - * `srcSize` must be at least as large as the frame header. - * hint : any size >= `ZSTD_frameHeaderSize_max` is large enough. - * @return : - decompressed size of `src` frame content, if known - * - ZSTD_CONTENTSIZE_UNKNOWN if the size cannot be determined - * - ZSTD_CONTENTSIZE_ERROR if an error occurred (e.g. invalid magic number, srcSize too small) - * note 1 : a 0 return value means the frame is valid but "empty". - * note 2 : decompressed size is an optional field, it may not be present, typically in streaming mode. - * When `return==ZSTD_CONTENTSIZE_UNKNOWN`, data to decompress could be any size. - * In which case, it's necessary to use streaming mode to decompress data. - * Optionally, application can rely on some implicit limit, - * as ZSTD_decompress() only needs an upper bound of decompressed size. - * (For example, data could be necessarily cut into blocks <= 16 KB). - * note 3 : decompressed size is always present when compression is completed using single-pass functions, - * such as ZSTD_compress(), ZSTD_compressCCtx() ZSTD_compress_usingDict() or ZSTD_compress_usingCDict(). - * note 4 : decompressed size can be very large (64-bits value), - * potentially larger than what local system can handle as a single memory segment. - * In which case, it's necessary to use streaming mode to decompress data. - * note 5 : If source is untrusted, decompressed size could be wrong or intentionally modified. - * Always ensure return value fits within application's authorized limits. - * Each application can set its own limits. - * note 6 : This function replaces ZSTD_getDecompressedSize() */ -#define ZSTD_CONTENTSIZE_UNKNOWN (0ULL - 1) -#define ZSTD_CONTENTSIZE_ERROR (0ULL - 2) -ZSTDLIB_API unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize); - -/*! ZSTD_getDecompressedSize() : - * NOTE: This function is now obsolete, in favor of ZSTD_getFrameContentSize(). - * Both functions work the same way, but ZSTD_getDecompressedSize() blends - * "empty", "unknown" and "error" results to the same return value (0), - * while ZSTD_getFrameContentSize() gives them separate return values. - * @return : decompressed size of `src` frame content _if known and not empty_, 0 otherwise. */ -ZSTDLIB_API unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize); - -/*! ZSTD_findFrameCompressedSize() : - * `src` should point to the start of a ZSTD frame or skippable frame. - * `srcSize` must be >= first frame size - * @return : the compressed size of the first frame starting at `src`, - * suitable to pass as `srcSize` to `ZSTD_decompress` or similar, - * or an error code if input is invalid */ -ZSTDLIB_API size_t ZSTD_findFrameCompressedSize(const void* src, size_t srcSize); - - -/*====== Helper functions ======*/ -#define ZSTD_COMPRESSBOUND(srcSize) ((srcSize) + ((srcSize)>>8) + (((srcSize) < (128<<10)) ? (((128<<10) - (srcSize)) >> 11) /* margin, from 64 to 0 */ : 0)) /* this formula ensures that bound(A) + bound(B) <= bound(A+B) as long as A and B >= 128 KB */ -ZSTDLIB_API size_t ZSTD_compressBound(size_t srcSize); /*!< maximum compressed size in worst case single-pass scenario */ -ZSTDLIB_API unsigned ZSTD_isError(size_t code); /*!< tells if a `size_t` function result is an error code */ -ZSTDLIB_API const char* ZSTD_getErrorName(size_t code); /*!< provides readable string from an error code */ -ZSTDLIB_API int ZSTD_minCLevel(void); /*!< minimum negative compression level allowed */ -ZSTDLIB_API int ZSTD_maxCLevel(void); /*!< maximum compression level available */ - - -/*************************************** -* Explicit context -***************************************/ -/*= Compression context - * When compressing many times, - * it is recommended to allocate a context just once, - * and re-use it for each successive compression operation. - * This will make workload friendlier for system's memory. - * Note : re-using context is just a speed / resource optimization. - * It doesn't change the compression ratio, which remains identical. - * Note 2 : In multi-threaded environments, - * use one different context per thread for parallel execution. - */ -typedef struct ZSTD_CCtx_s ZSTD_CCtx; -ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx(void); -ZSTDLIB_API size_t ZSTD_freeCCtx(ZSTD_CCtx* cctx); - -/*! ZSTD_compressCCtx() : - * Same as ZSTD_compress(), using an explicit ZSTD_CCtx. - * Important : in order to behave similarly to `ZSTD_compress()`, - * this function compresses at requested compression level, - * __ignoring any other parameter__ . - * If any advanced parameter was set using the advanced API, - * they will all be reset. Only `compressionLevel` remains. - */ -ZSTDLIB_API size_t ZSTD_compressCCtx(ZSTD_CCtx* cctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - int compressionLevel); - -/*= Decompression context - * When decompressing many times, - * it is recommended to allocate a context only once, - * and re-use it for each successive compression operation. - * This will make workload friendlier for system's memory. - * Use one context per thread for parallel execution. */ -typedef struct ZSTD_DCtx_s ZSTD_DCtx; -ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx(void); -ZSTDLIB_API size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx); - -/*! ZSTD_decompressDCtx() : - * Same as ZSTD_decompress(), - * requires an allocated ZSTD_DCtx. - * Compatible with sticky parameters. - */ -ZSTDLIB_API size_t ZSTD_decompressDCtx(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize); - - -/*************************************** -* Advanced compression API -***************************************/ - -/* API design : - * Parameters are pushed one by one into an existing context, - * using ZSTD_CCtx_set*() functions. - * Pushed parameters are sticky : they are valid for next compressed frame, and any subsequent frame. - * "sticky" parameters are applicable to `ZSTD_compress2()` and `ZSTD_compressStream*()` ! - * __They do not apply to "simple" one-shot variants such as ZSTD_compressCCtx()__ . - * - * It's possible to reset all parameters to "default" using ZSTD_CCtx_reset(). - * - * This API supercedes all other "advanced" API entry points in the experimental section. - * In the future, we expect to remove from experimental API entry points which are redundant with this API. - */ - - -/* Compression strategies, listed from fastest to strongest */ -typedef enum { ZSTD_fast=1, - ZSTD_dfast=2, - ZSTD_greedy=3, - ZSTD_lazy=4, - ZSTD_lazy2=5, - ZSTD_btlazy2=6, - ZSTD_btopt=7, - ZSTD_btultra=8, - ZSTD_btultra2=9 - /* note : new strategies _might_ be added in the future. - Only the order (from fast to strong) is guaranteed */ -} ZSTD_strategy; - - -typedef enum { - - /* compression parameters - * Note: When compressing with a ZSTD_CDict these parameters are superseded - * by the parameters used to construct the ZSTD_CDict. - * See ZSTD_CCtx_refCDict() for more info (superseded-by-cdict). */ - ZSTD_c_compressionLevel=100, /* Set compression parameters according to pre-defined cLevel table. - * Note that exact compression parameters are dynamically determined, - * depending on both compression level and srcSize (when known). - * Default level is ZSTD_CLEVEL_DEFAULT==3. - * Special: value 0 means default, which is controlled by ZSTD_CLEVEL_DEFAULT. - * Note 1 : it's possible to pass a negative compression level. - * Note 2 : setting a level does not automatically set all other compression parameters - * to default. Setting this will however eventually dynamically impact the compression - * parameters which have not been manually set. The manually set - * ones will 'stick'. */ - /* Advanced compression parameters : - * It's possible to pin down compression parameters to some specific values. - * In which case, these values are no longer dynamically selected by the compressor */ - ZSTD_c_windowLog=101, /* Maximum allowed back-reference distance, expressed as power of 2. - * This will set a memory budget for streaming decompression, - * with larger values requiring more memory - * and typically compressing more. - * Must be clamped between ZSTD_WINDOWLOG_MIN and ZSTD_WINDOWLOG_MAX. - * Special: value 0 means "use default windowLog". - * Note: Using a windowLog greater than ZSTD_WINDOWLOG_LIMIT_DEFAULT - * requires explicitly allowing such size at streaming decompression stage. */ - ZSTD_c_hashLog=102, /* Size of the initial probe table, as a power of 2. - * Resulting memory usage is (1 << (hashLog+2)). - * Must be clamped between ZSTD_HASHLOG_MIN and ZSTD_HASHLOG_MAX. - * Larger tables improve compression ratio of strategies <= dFast, - * and improve speed of strategies > dFast. - * Special: value 0 means "use default hashLog". */ - ZSTD_c_chainLog=103, /* Size of the multi-probe search table, as a power of 2. - * Resulting memory usage is (1 << (chainLog+2)). - * Must be clamped between ZSTD_CHAINLOG_MIN and ZSTD_CHAINLOG_MAX. - * Larger tables result in better and slower compression. - * This parameter is useless for "fast" strategy. - * It's still useful when using "dfast" strategy, - * in which case it defines a secondary probe table. - * Special: value 0 means "use default chainLog". */ - ZSTD_c_searchLog=104, /* Number of search attempts, as a power of 2. - * More attempts result in better and slower compression. - * This parameter is useless for "fast" and "dFast" strategies. - * Special: value 0 means "use default searchLog". */ - ZSTD_c_minMatch=105, /* Minimum size of searched matches. - * Note that Zstandard can still find matches of smaller size, - * it just tweaks its search algorithm to look for this size and larger. - * Larger values increase compression and decompression speed, but decrease ratio. - * Must be clamped between ZSTD_MINMATCH_MIN and ZSTD_MINMATCH_MAX. - * Note that currently, for all strategies < btopt, effective minimum is 4. - * , for all strategies > fast, effective maximum is 6. - * Special: value 0 means "use default minMatchLength". */ - ZSTD_c_targetLength=106, /* Impact of this field depends on strategy. - * For strategies btopt, btultra & btultra2: - * Length of Match considered "good enough" to stop search. - * Larger values make compression stronger, and slower. - * For strategy fast: - * Distance between match sampling. - * Larger values make compression faster, and weaker. - * Special: value 0 means "use default targetLength". */ - ZSTD_c_strategy=107, /* See ZSTD_strategy enum definition. - * The higher the value of selected strategy, the more complex it is, - * resulting in stronger and slower compression. - * Special: value 0 means "use default strategy". */ - - /* LDM mode parameters */ - ZSTD_c_enableLongDistanceMatching=160, /* Enable long distance matching. - * This parameter is designed to improve compression ratio - * for large inputs, by finding large matches at long distance. - * It increases memory usage and window size. - * Note: enabling this parameter increases default ZSTD_c_windowLog to 128 MB - * except when expressly set to a different value. - * Note: will be enabled by default if ZSTD_c_windowLog >= 128 MB and - * compression strategy >= ZSTD_btopt (== compression level 16+) */ - ZSTD_c_ldmHashLog=161, /* Size of the table for long distance matching, as a power of 2. - * Larger values increase memory usage and compression ratio, - * but decrease compression speed. - * Must be clamped between ZSTD_HASHLOG_MIN and ZSTD_HASHLOG_MAX - * default: windowlog - 7. - * Special: value 0 means "automatically determine hashlog". */ - ZSTD_c_ldmMinMatch=162, /* Minimum match size for long distance matcher. - * Larger/too small values usually decrease compression ratio. - * Must be clamped between ZSTD_LDM_MINMATCH_MIN and ZSTD_LDM_MINMATCH_MAX. - * Special: value 0 means "use default value" (default: 64). */ - ZSTD_c_ldmBucketSizeLog=163, /* Log size of each bucket in the LDM hash table for collision resolution. - * Larger values improve collision resolution but decrease compression speed. - * The maximum value is ZSTD_LDM_BUCKETSIZELOG_MAX. - * Special: value 0 means "use default value" (default: 3). */ - ZSTD_c_ldmHashRateLog=164, /* Frequency of inserting/looking up entries into the LDM hash table. - * Must be clamped between 0 and (ZSTD_WINDOWLOG_MAX - ZSTD_HASHLOG_MIN). - * Default is MAX(0, (windowLog - ldmHashLog)), optimizing hash table usage. - * Larger values improve compression speed. - * Deviating far from default value will likely result in a compression ratio decrease. - * Special: value 0 means "automatically determine hashRateLog". */ - - /* frame parameters */ - ZSTD_c_contentSizeFlag=200, /* Content size will be written into frame header _whenever known_ (default:1) - * Content size must be known at the beginning of compression. - * This is automatically the case when using ZSTD_compress2(), - * For streaming scenarios, content size must be provided with ZSTD_CCtx_setPledgedSrcSize() */ - ZSTD_c_checksumFlag=201, /* A 32-bits checksum of content is written at end of frame (default:0) */ - ZSTD_c_dictIDFlag=202, /* When applicable, dictionary's ID is written into frame header (default:1) */ - - /* multi-threading parameters */ - /* These parameters are only active if multi-threading is enabled (compiled with build macro ZSTD_MULTITHREAD). - * Otherwise, trying to set any other value than default (0) will be a no-op and return an error. - * In a situation where it's unknown if the linked library supports multi-threading or not, - * setting ZSTD_c_nbWorkers to any value >= 1 and consulting the return value provides a quick way to check this property. - */ - ZSTD_c_nbWorkers=400, /* Select how many threads will be spawned to compress in parallel. - * When nbWorkers >= 1, triggers asynchronous mode when invoking ZSTD_compressStream*() : - * ZSTD_compressStream*() consumes input and flush output if possible, but immediately gives back control to caller, - * while compression is performed in parallel, within worker thread(s). - * (note : a strong exception to this rule is when first invocation of ZSTD_compressStream2() sets ZSTD_e_end : - * in which case, ZSTD_compressStream2() delegates to ZSTD_compress2(), which is always a blocking call). - * More workers improve speed, but also increase memory usage. - * Default value is `0`, aka "single-threaded mode" : no worker is spawned, - * compression is performed inside Caller's thread, and all invocations are blocking */ - ZSTD_c_jobSize=401, /* Size of a compression job. This value is enforced only when nbWorkers >= 1. - * Each compression job is completed in parallel, so this value can indirectly impact the nb of active threads. - * 0 means default, which is dynamically determined based on compression parameters. - * Job size must be a minimum of overlap size, or 1 MB, whichever is largest. - * The minimum size is automatically and transparently enforced. */ - ZSTD_c_overlapLog=402, /* Control the overlap size, as a fraction of window size. - * The overlap size is an amount of data reloaded from previous job at the beginning of a new job. - * It helps preserve compression ratio, while each job is compressed in parallel. - * This value is enforced only when nbWorkers >= 1. - * Larger values increase compression ratio, but decrease speed. - * Possible values range from 0 to 9 : - * - 0 means "default" : value will be determined by the library, depending on strategy - * - 1 means "no overlap" - * - 9 means "full overlap", using a full window size. - * Each intermediate rank increases/decreases load size by a factor 2 : - * 9: full window; 8: w/2; 7: w/4; 6: w/8; 5:w/16; 4: w/32; 3:w/64; 2:w/128; 1:no overlap; 0:default - * default value varies between 6 and 9, depending on strategy */ - - /* note : additional experimental parameters are also available - * within the experimental section of the API. - * At the time of this writing, they include : - * ZSTD_c_rsyncable - * ZSTD_c_format - * ZSTD_c_forceMaxWindow - * ZSTD_c_forceAttachDict - * ZSTD_c_literalCompressionMode - * ZSTD_c_targetCBlockSize - * ZSTD_c_srcSizeHint - * ZSTD_c_enableDedicatedDictSearch - * ZSTD_c_stableInBuffer - * ZSTD_c_stableOutBuffer - * ZSTD_c_blockDelimiters - * ZSTD_c_validateSequences - * Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them. - * note : never ever use experimentalParam? names directly; - * also, the enums values themselves are unstable and can still change. - */ - ZSTD_c_experimentalParam1=500, - ZSTD_c_experimentalParam2=10, - ZSTD_c_experimentalParam3=1000, - ZSTD_c_experimentalParam4=1001, - ZSTD_c_experimentalParam5=1002, - ZSTD_c_experimentalParam6=1003, - ZSTD_c_experimentalParam7=1004, - ZSTD_c_experimentalParam8=1005, - ZSTD_c_experimentalParam9=1006, - ZSTD_c_experimentalParam10=1007, - ZSTD_c_experimentalParam11=1008, - ZSTD_c_experimentalParam12=1009 -} ZSTD_cParameter; - -typedef struct { - size_t error; - int lowerBound; - int upperBound; -} ZSTD_bounds; - -/*! ZSTD_cParam_getBounds() : - * All parameters must belong to an interval with lower and upper bounds, - * otherwise they will either trigger an error or be automatically clamped. - * @return : a structure, ZSTD_bounds, which contains - * - an error status field, which must be tested using ZSTD_isError() - * - lower and upper bounds, both inclusive - */ -ZSTDLIB_API ZSTD_bounds ZSTD_cParam_getBounds(ZSTD_cParameter cParam); - -/*! ZSTD_CCtx_setParameter() : - * Set one compression parameter, selected by enum ZSTD_cParameter. - * All parameters have valid bounds. Bounds can be queried using ZSTD_cParam_getBounds(). - * Providing a value beyond bound will either clamp it, or trigger an error (depending on parameter). - * Setting a parameter is generally only possible during frame initialization (before starting compression). - * Exception : when using multi-threading mode (nbWorkers >= 1), - * the following parameters can be updated _during_ compression (within same frame): - * => compressionLevel, hashLog, chainLog, searchLog, minMatch, targetLength and strategy. - * new parameters will be active for next job only (after a flush()). - * @return : an error code (which can be tested using ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_CCtx_setParameter(ZSTD_CCtx* cctx, ZSTD_cParameter param, int value); - -/*! ZSTD_CCtx_setPledgedSrcSize() : - * Total input data size to be compressed as a single frame. - * Value will be written in frame header, unless if explicitly forbidden using ZSTD_c_contentSizeFlag. - * This value will also be controlled at end of frame, and trigger an error if not respected. - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Note 1 : pledgedSrcSize==0 actually means zero, aka an empty frame. - * In order to mean "unknown content size", pass constant ZSTD_CONTENTSIZE_UNKNOWN. - * ZSTD_CONTENTSIZE_UNKNOWN is default value for any new frame. - * Note 2 : pledgedSrcSize is only valid once, for the next frame. - * It's discarded at the end of the frame, and replaced by ZSTD_CONTENTSIZE_UNKNOWN. - * Note 3 : Whenever all input data is provided and consumed in a single round, - * for example with ZSTD_compress2(), - * or invoking immediately ZSTD_compressStream2(,,,ZSTD_e_end), - * this value is automatically overridden by srcSize instead. - */ -ZSTDLIB_API size_t ZSTD_CCtx_setPledgedSrcSize(ZSTD_CCtx* cctx, unsigned long long pledgedSrcSize); - -typedef enum { - ZSTD_reset_session_only = 1, - ZSTD_reset_parameters = 2, - ZSTD_reset_session_and_parameters = 3 -} ZSTD_ResetDirective; - -/*! ZSTD_CCtx_reset() : - * There are 2 different things that can be reset, independently or jointly : - * - The session : will stop compressing current frame, and make CCtx ready to start a new one. - * Useful after an error, or to interrupt any ongoing compression. - * Any internal data not yet flushed is cancelled. - * Compression parameters and dictionary remain unchanged. - * They will be used to compress next frame. - * Resetting session never fails. - * - The parameters : changes all parameters back to "default". - * This removes any reference to any dictionary too. - * Parameters can only be changed between 2 sessions (i.e. no compression is currently ongoing) - * otherwise the reset fails, and function returns an error value (which can be tested using ZSTD_isError()) - * - Both : similar to resetting the session, followed by resetting parameters. - */ -ZSTDLIB_API size_t ZSTD_CCtx_reset(ZSTD_CCtx* cctx, ZSTD_ResetDirective reset); - -/*! ZSTD_compress2() : - * Behave the same as ZSTD_compressCCtx(), but compression parameters are set using the advanced API. - * ZSTD_compress2() always starts a new frame. - * Should cctx hold data from a previously unfinished frame, everything about it is forgotten. - * - Compression parameters are pushed into CCtx before starting compression, using ZSTD_CCtx_set*() - * - The function is always blocking, returns when compression is completed. - * Hint : compression runs faster if `dstCapacity` >= `ZSTD_compressBound(srcSize)`. - * @return : compressed size written into `dst` (<= `dstCapacity), - * or an error code if it fails (which can be tested using ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_compress2( ZSTD_CCtx* cctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize); - - -/*************************************** -* Advanced decompression API -***************************************/ - -/* The advanced API pushes parameters one by one into an existing DCtx context. - * Parameters are sticky, and remain valid for all following frames - * using the same DCtx context. - * It's possible to reset parameters to default values using ZSTD_DCtx_reset(). - * Note : This API is compatible with existing ZSTD_decompressDCtx() and ZSTD_decompressStream(). - * Therefore, no new decompression function is necessary. - */ - -typedef enum { - - ZSTD_d_windowLogMax=100, /* Select a size limit (in power of 2) beyond which - * the streaming API will refuse to allocate memory buffer - * in order to protect the host from unreasonable memory requirements. - * This parameter is only useful in streaming mode, since no internal buffer is allocated in single-pass mode. - * By default, a decompression context accepts window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT). - * Special: value 0 means "use default maximum windowLog". */ - - /* note : additional experimental parameters are also available - * within the experimental section of the API. - * At the time of this writing, they include : - * ZSTD_d_format - * ZSTD_d_stableOutBuffer - * ZSTD_d_forceIgnoreChecksum - * ZSTD_d_refMultipleDDicts - * Because they are not stable, it's necessary to define ZSTD_STATIC_LINKING_ONLY to access them. - * note : never ever use experimentalParam? names directly - */ - ZSTD_d_experimentalParam1=1000, - ZSTD_d_experimentalParam2=1001, - ZSTD_d_experimentalParam3=1002, - ZSTD_d_experimentalParam4=1003 - -} ZSTD_dParameter; - -/*! ZSTD_dParam_getBounds() : - * All parameters must belong to an interval with lower and upper bounds, - * otherwise they will either trigger an error or be automatically clamped. - * @return : a structure, ZSTD_bounds, which contains - * - an error status field, which must be tested using ZSTD_isError() - * - both lower and upper bounds, inclusive - */ -ZSTDLIB_API ZSTD_bounds ZSTD_dParam_getBounds(ZSTD_dParameter dParam); - -/*! ZSTD_DCtx_setParameter() : - * Set one compression parameter, selected by enum ZSTD_dParameter. - * All parameters have valid bounds. Bounds can be queried using ZSTD_dParam_getBounds(). - * Providing a value beyond bound will either clamp it, or trigger an error (depending on parameter). - * Setting a parameter is only possible during frame initialization (before starting decompression). - * @return : 0, or an error code (which can be tested using ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_DCtx_setParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int value); - -/*! ZSTD_DCtx_reset() : - * Return a DCtx to clean state. - * Session and parameters can be reset jointly or separately. - * Parameters can only be reset when no active frame is being decompressed. - * @return : 0, or an error code, which can be tested with ZSTD_isError() - */ -ZSTDLIB_API size_t ZSTD_DCtx_reset(ZSTD_DCtx* dctx, ZSTD_ResetDirective reset); - - -/**************************** -* Streaming -****************************/ - -typedef struct ZSTD_inBuffer_s { - const void* src; /**< start of input buffer */ - size_t size; /**< size of input buffer */ - size_t pos; /**< position where reading stopped. Will be updated. Necessarily 0 <= pos <= size */ -} ZSTD_inBuffer; - -typedef struct ZSTD_outBuffer_s { - void* dst; /**< start of output buffer */ - size_t size; /**< size of output buffer */ - size_t pos; /**< position where writing stopped. Will be updated. Necessarily 0 <= pos <= size */ -} ZSTD_outBuffer; - - - -/*-*********************************************************************** -* Streaming compression - HowTo -* -* A ZSTD_CStream object is required to track streaming operation. -* Use ZSTD_createCStream() and ZSTD_freeCStream() to create/release resources. -* ZSTD_CStream objects can be reused multiple times on consecutive compression operations. -* It is recommended to re-use ZSTD_CStream since it will play nicer with system's memory, by re-using already allocated memory. -* -* For parallel execution, use one separate ZSTD_CStream per thread. -* -* note : since v1.3.0, ZSTD_CStream and ZSTD_CCtx are the same thing. -* -* Parameters are sticky : when starting a new compression on the same context, -* it will re-use the same sticky parameters as previous compression session. -* When in doubt, it's recommended to fully initialize the context before usage. -* Use ZSTD_CCtx_reset() to reset the context and ZSTD_CCtx_setParameter(), -* ZSTD_CCtx_setPledgedSrcSize(), or ZSTD_CCtx_loadDictionary() and friends to -* set more specific parameters, the pledged source size, or load a dictionary. -* -* Use ZSTD_compressStream2() with ZSTD_e_continue as many times as necessary to -* consume input stream. The function will automatically update both `pos` -* fields within `input` and `output`. -* Note that the function may not consume the entire input, for example, because -* the output buffer is already full, in which case `input.pos < input.size`. -* The caller must check if input has been entirely consumed. -* If not, the caller must make some room to receive more compressed data, -* and then present again remaining input data. -* note: ZSTD_e_continue is guaranteed to make some forward progress when called, -* but doesn't guarantee maximal forward progress. This is especially relevant -* when compressing with multiple threads. The call won't block if it can -* consume some input, but if it can't it will wait for some, but not all, -* output to be flushed. -* @return : provides a minimum amount of data remaining to be flushed from internal buffers -* or an error code, which can be tested using ZSTD_isError(). -* -* At any moment, it's possible to flush whatever data might remain stuck within internal buffer, -* using ZSTD_compressStream2() with ZSTD_e_flush. `output->pos` will be updated. -* Note that, if `output->size` is too small, a single invocation with ZSTD_e_flush might not be enough (return code > 0). -* In which case, make some room to receive more compressed data, and call again ZSTD_compressStream2() with ZSTD_e_flush. -* You must continue calling ZSTD_compressStream2() with ZSTD_e_flush until it returns 0, at which point you can change the -* operation. -* note: ZSTD_e_flush will flush as much output as possible, meaning when compressing with multiple threads, it will -* block until the flush is complete or the output buffer is full. -* @return : 0 if internal buffers are entirely flushed, -* >0 if some data still present within internal buffer (the value is minimal estimation of remaining size), -* or an error code, which can be tested using ZSTD_isError(). -* -* Calling ZSTD_compressStream2() with ZSTD_e_end instructs to finish a frame. -* It will perform a flush and write frame epilogue. -* The epilogue is required for decoders to consider a frame completed. -* flush operation is the same, and follows same rules as calling ZSTD_compressStream2() with ZSTD_e_flush. -* You must continue calling ZSTD_compressStream2() with ZSTD_e_end until it returns 0, at which point you are free to -* start a new frame. -* note: ZSTD_e_end will flush as much output as possible, meaning when compressing with multiple threads, it will -* block until the flush is complete or the output buffer is full. -* @return : 0 if frame fully completed and fully flushed, -* >0 if some data still present within internal buffer (the value is minimal estimation of remaining size), -* or an error code, which can be tested using ZSTD_isError(). -* -* *******************************************************************/ - -typedef ZSTD_CCtx ZSTD_CStream; /**< CCtx and CStream are now effectively same object (>= v1.3.0) */ - /* Continue to distinguish them for compatibility with older versions <= v1.2.0 */ -/*===== ZSTD_CStream management functions =====*/ -ZSTDLIB_API ZSTD_CStream* ZSTD_createCStream(void); -ZSTDLIB_API size_t ZSTD_freeCStream(ZSTD_CStream* zcs); - -/*===== Streaming compression functions =====*/ -typedef enum { - ZSTD_e_continue=0, /* collect more data, encoder decides when to output compressed result, for optimal compression ratio */ - ZSTD_e_flush=1, /* flush any data provided so far, - * it creates (at least) one new block, that can be decoded immediately on reception; - * frame will continue: any future data can still reference previously compressed data, improving compression. - * note : multithreaded compression will block to flush as much output as possible. */ - ZSTD_e_end=2 /* flush any remaining data _and_ close current frame. - * note that frame is only closed after compressed data is fully flushed (return value == 0). - * After that point, any additional data starts a new frame. - * note : each frame is independent (does not reference any content from previous frame). - : note : multithreaded compression will block to flush as much output as possible. */ -} ZSTD_EndDirective; - -/*! ZSTD_compressStream2() : - * Behaves about the same as ZSTD_compressStream, with additional control on end directive. - * - Compression parameters are pushed into CCtx before starting compression, using ZSTD_CCtx_set*() - * - Compression parameters cannot be changed once compression is started (save a list of exceptions in multi-threading mode) - * - output->pos must be <= dstCapacity, input->pos must be <= srcSize - * - output->pos and input->pos will be updated. They are guaranteed to remain below their respective limit. - * - endOp must be a valid directive - * - When nbWorkers==0 (default), function is blocking : it completes its job before returning to caller. - * - When nbWorkers>=1, function is non-blocking : it copies a portion of input, distributes jobs to internal worker threads, flush to output whatever is available, - * and then immediately returns, just indicating that there is some data remaining to be flushed. - * The function nonetheless guarantees forward progress : it will return only after it reads or write at least 1+ byte. - * - Exception : if the first call requests a ZSTD_e_end directive and provides enough dstCapacity, the function delegates to ZSTD_compress2() which is always blocking. - * - @return provides a minimum amount of data remaining to be flushed from internal buffers - * or an error code, which can be tested using ZSTD_isError(). - * if @return != 0, flush is not fully completed, there is still some data left within internal buffers. - * This is useful for ZSTD_e_flush, since in this case more flushes are necessary to empty all buffers. - * For ZSTD_e_end, @return == 0 when internal buffers are fully flushed and frame is completed. - * - after a ZSTD_e_end directive, if internal buffer is not fully flushed (@return != 0), - * only ZSTD_e_end or ZSTD_e_flush operations are allowed. - * Before starting a new compression job, or changing compression parameters, - * it is required to fully flush internal buffers. - */ -ZSTDLIB_API size_t ZSTD_compressStream2( ZSTD_CCtx* cctx, - ZSTD_outBuffer* output, - ZSTD_inBuffer* input, - ZSTD_EndDirective endOp); - - -/* These buffer sizes are softly recommended. - * They are not required : ZSTD_compressStream*() happily accepts any buffer size, for both input and output. - * Respecting the recommended size just makes it a bit easier for ZSTD_compressStream*(), - * reducing the amount of memory shuffling and buffering, resulting in minor performance savings. - * - * However, note that these recommendations are from the perspective of a C caller program. - * If the streaming interface is invoked from some other language, - * especially managed ones such as Java or Go, through a foreign function interface such as jni or cgo, - * a major performance rule is to reduce crossing such interface to an absolute minimum. - * It's not rare that performance ends being spent more into the interface, rather than compression itself. - * In which cases, prefer using large buffers, as large as practical, - * for both input and output, to reduce the nb of roundtrips. - */ -ZSTDLIB_API size_t ZSTD_CStreamInSize(void); /**< recommended size for input buffer */ -ZSTDLIB_API size_t ZSTD_CStreamOutSize(void); /**< recommended size for output buffer. Guarantee to successfully flush at least one complete compressed block. */ - - -/* ***************************************************************************** - * This following is a legacy streaming API. - * It can be replaced by ZSTD_CCtx_reset() and ZSTD_compressStream2(). - * It is redundant, but remains fully supported. - * Advanced parameters and dictionary compression can only be used through the - * new API. - ******************************************************************************/ - -/*! - * Equivalent to: - * - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * ZSTD_CCtx_refCDict(zcs, NULL); // clear the dictionary (if any) - * ZSTD_CCtx_setParameter(zcs, ZSTD_c_compressionLevel, compressionLevel); - */ -ZSTDLIB_API size_t ZSTD_initCStream(ZSTD_CStream* zcs, int compressionLevel); -/*! - * Alternative for ZSTD_compressStream2(zcs, output, input, ZSTD_e_continue). - * NOTE: The return value is different. ZSTD_compressStream() returns a hint for - * the next read size (if non-zero and not an error). ZSTD_compressStream2() - * returns the minimum nb of bytes left to flush (if non-zero and not an error). - */ -ZSTDLIB_API size_t ZSTD_compressStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output, ZSTD_inBuffer* input); -/*! Equivalent to ZSTD_compressStream2(zcs, output, &emptyInput, ZSTD_e_flush). */ -ZSTDLIB_API size_t ZSTD_flushStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output); -/*! Equivalent to ZSTD_compressStream2(zcs, output, &emptyInput, ZSTD_e_end). */ -ZSTDLIB_API size_t ZSTD_endStream(ZSTD_CStream* zcs, ZSTD_outBuffer* output); - - -/*-*************************************************************************** -* Streaming decompression - HowTo -* -* A ZSTD_DStream object is required to track streaming operations. -* Use ZSTD_createDStream() and ZSTD_freeDStream() to create/release resources. -* ZSTD_DStream objects can be re-used multiple times. -* -* Use ZSTD_initDStream() to start a new decompression operation. -* @return : recommended first input size -* Alternatively, use advanced API to set specific properties. -* -* Use ZSTD_decompressStream() repetitively to consume your input. -* The function will update both `pos` fields. -* If `input.pos < input.size`, some input has not been consumed. -* It's up to the caller to present again remaining data. -* The function tries to flush all data decoded immediately, respecting output buffer size. -* If `output.pos < output.size`, decoder has flushed everything it could. -* But if `output.pos == output.size`, there might be some data left within internal buffers., -* In which case, call ZSTD_decompressStream() again to flush whatever remains in the buffer. -* Note : with no additional input provided, amount of data flushed is necessarily <= ZSTD_BLOCKSIZE_MAX. -* @return : 0 when a frame is completely decoded and fully flushed, -* or an error code, which can be tested using ZSTD_isError(), -* or any other value > 0, which means there is still some decoding or flushing to do to complete current frame : -* the return value is a suggested next input size (just a hint for better latency) -* that will never request more than the remaining frame size. -* *******************************************************************************/ - -typedef ZSTD_DCtx ZSTD_DStream; /**< DCtx and DStream are now effectively same object (>= v1.3.0) */ - /* For compatibility with versions <= v1.2.0, prefer differentiating them. */ -/*===== ZSTD_DStream management functions =====*/ -ZSTDLIB_API ZSTD_DStream* ZSTD_createDStream(void); -ZSTDLIB_API size_t ZSTD_freeDStream(ZSTD_DStream* zds); - -/*===== Streaming decompression functions =====*/ - -/* This function is redundant with the advanced API and equivalent to: - * - * ZSTD_DCtx_reset(zds, ZSTD_reset_session_only); - * ZSTD_DCtx_refDDict(zds, NULL); - */ -ZSTDLIB_API size_t ZSTD_initDStream(ZSTD_DStream* zds); - -ZSTDLIB_API size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inBuffer* input); - -ZSTDLIB_API size_t ZSTD_DStreamInSize(void); /*!< recommended size for input buffer */ -ZSTDLIB_API size_t ZSTD_DStreamOutSize(void); /*!< recommended size for output buffer. Guarantee to successfully flush at least one complete block in all circumstances. */ - - -/************************** -* Simple dictionary API -***************************/ -/*! ZSTD_compress_usingDict() : - * Compression at an explicit compression level using a Dictionary. - * A dictionary can be any arbitrary data segment (also called a prefix), - * or a buffer with specified information (see dictBuilder/zdict.h). - * Note : This function loads the dictionary, resulting in significant startup delay. - * It's intended for a dictionary used only once. - * Note 2 : When `dict == NULL || dictSize < 8` no dictionary is used. */ -ZSTDLIB_API size_t ZSTD_compress_usingDict(ZSTD_CCtx* ctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict,size_t dictSize, - int compressionLevel); - -/*! ZSTD_decompress_usingDict() : - * Decompression using a known Dictionary. - * Dictionary must be identical to the one used during compression. - * Note : This function loads the dictionary, resulting in significant startup delay. - * It's intended for a dictionary used only once. - * Note : When `dict == NULL || dictSize < 8` no dictionary is used. */ -ZSTDLIB_API size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict,size_t dictSize); - - -/*********************************** - * Bulk processing dictionary API - **********************************/ -typedef struct ZSTD_CDict_s ZSTD_CDict; - -/*! ZSTD_createCDict() : - * When compressing multiple messages or blocks using the same dictionary, - * it's recommended to digest the dictionary only once, since it's a costly operation. - * ZSTD_createCDict() will create a state from digesting a dictionary. - * The resulting state can be used for future compression operations with very limited startup cost. - * ZSTD_CDict can be created once and shared by multiple threads concurrently, since its usage is read-only. - * @dictBuffer can be released after ZSTD_CDict creation, because its content is copied within CDict. - * Note 1 : Consider experimental function `ZSTD_createCDict_byReference()` if you prefer to not duplicate @dictBuffer content. - * Note 2 : A ZSTD_CDict can be created from an empty @dictBuffer, - * in which case the only thing that it transports is the @compressionLevel. - * This can be useful in a pipeline featuring ZSTD_compress_usingCDict() exclusively, - * expecting a ZSTD_CDict parameter with any data, including those without a known dictionary. */ -ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict(const void* dictBuffer, size_t dictSize, - int compressionLevel); - -/*! ZSTD_freeCDict() : - * Function frees memory allocated by ZSTD_createCDict(). */ -ZSTDLIB_API size_t ZSTD_freeCDict(ZSTD_CDict* CDict); - -/*! ZSTD_compress_usingCDict() : - * Compression using a digested Dictionary. - * Recommended when same dictionary is used multiple times. - * Note : compression level is _decided at dictionary creation time_, - * and frame parameters are hardcoded (dictID=yes, contentSize=yes, checksum=no) */ -ZSTDLIB_API size_t ZSTD_compress_usingCDict(ZSTD_CCtx* cctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const ZSTD_CDict* cdict); - - -typedef struct ZSTD_DDict_s ZSTD_DDict; - -/*! ZSTD_createDDict() : - * Create a digested dictionary, ready to start decompression operation without startup delay. - * dictBuffer can be released after DDict creation, as its content is copied inside DDict. */ -ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict(const void* dictBuffer, size_t dictSize); - -/*! ZSTD_freeDDict() : - * Function frees memory allocated with ZSTD_createDDict() */ -ZSTDLIB_API size_t ZSTD_freeDDict(ZSTD_DDict* ddict); - -/*! ZSTD_decompress_usingDDict() : - * Decompression using a digested Dictionary. - * Recommended when same dictionary is used multiple times. */ -ZSTDLIB_API size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const ZSTD_DDict* ddict); - - -/******************************** - * Dictionary helper functions - *******************************/ - -/*! ZSTD_getDictID_fromDict() : - * Provides the dictID stored within dictionary. - * if @return == 0, the dictionary is not conformant with Zstandard specification. - * It can still be loaded, but as a content-only dictionary. */ -ZSTDLIB_API unsigned ZSTD_getDictID_fromDict(const void* dict, size_t dictSize); - -/*! ZSTD_getDictID_fromDDict() : - * Provides the dictID of the dictionary loaded into `ddict`. - * If @return == 0, the dictionary is not conformant to Zstandard specification, or empty. - * Non-conformant dictionaries can still be loaded, but as content-only dictionaries. */ -ZSTDLIB_API unsigned ZSTD_getDictID_fromDDict(const ZSTD_DDict* ddict); - -/*! ZSTD_getDictID_fromFrame() : - * Provides the dictID required to decompressed the frame stored within `src`. - * If @return == 0, the dictID could not be decoded. - * This could for one of the following reasons : - * - The frame does not require a dictionary to be decoded (most common case). - * - The frame was built with dictID intentionally removed. Whatever dictionary is necessary is a hidden information. - * Note : this use case also happens when using a non-conformant dictionary. - * - `srcSize` is too small, and as a result, the frame header could not be decoded (only possible if `srcSize < ZSTD_FRAMEHEADERSIZE_MAX`). - * - This is not a Zstandard frame. - * When identifying the exact failure cause, it's possible to use ZSTD_getFrameHeader(), which will provide a more precise error code. */ -ZSTDLIB_API unsigned ZSTD_getDictID_fromFrame(const void* src, size_t srcSize); - - -/******************************************************************************* - * Advanced dictionary and prefix API - * - * This API allows dictionaries to be used with ZSTD_compress2(), - * ZSTD_compressStream2(), and ZSTD_decompress(). Dictionaries are sticky, and - * only reset with the context is reset with ZSTD_reset_parameters or - * ZSTD_reset_session_and_parameters. Prefixes are single-use. - ******************************************************************************/ - - -/*! ZSTD_CCtx_loadDictionary() : - * Create an internal CDict from `dict` buffer. - * Decompression will have to use same dictionary. - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Special: Loading a NULL (or 0-size) dictionary invalidates previous dictionary, - * meaning "return to no-dictionary mode". - * Note 1 : Dictionary is sticky, it will be used for all future compressed frames. - * To return to "no-dictionary" situation, load a NULL dictionary (or reset parameters). - * Note 2 : Loading a dictionary involves building tables. - * It's also a CPU consuming operation, with non-negligible impact on latency. - * Tables are dependent on compression parameters, and for this reason, - * compression parameters can no longer be changed after loading a dictionary. - * Note 3 :`dict` content will be copied internally. - * Use experimental ZSTD_CCtx_loadDictionary_byReference() to reference content instead. - * In such a case, dictionary buffer must outlive its users. - * Note 4 : Use ZSTD_CCtx_loadDictionary_advanced() - * to precisely select how dictionary content must be interpreted. */ -ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary(ZSTD_CCtx* cctx, const void* dict, size_t dictSize); - -/*! ZSTD_CCtx_refCDict() : - * Reference a prepared dictionary, to be used for all next compressed frames. - * Note that compression parameters are enforced from within CDict, - * and supersede any compression parameter previously set within CCtx. - * The parameters ignored are labelled as "superseded-by-cdict" in the ZSTD_cParameter enum docs. - * The ignored parameters will be used again if the CCtx is returned to no-dictionary mode. - * The dictionary will remain valid for future compressed frames using same CCtx. - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Special : Referencing a NULL CDict means "return to no-dictionary mode". - * Note 1 : Currently, only one dictionary can be managed. - * Referencing a new dictionary effectively "discards" any previous one. - * Note 2 : CDict is just referenced, its lifetime must outlive its usage within CCtx. */ -ZSTDLIB_API size_t ZSTD_CCtx_refCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict); - -/*! ZSTD_CCtx_refPrefix() : - * Reference a prefix (single-usage dictionary) for next compressed frame. - * A prefix is **only used once**. Tables are discarded at end of frame (ZSTD_e_end). - * Decompression will need same prefix to properly regenerate data. - * Compressing with a prefix is similar in outcome as performing a diff and compressing it, - * but performs much faster, especially during decompression (compression speed is tunable with compression level). - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Special: Adding any prefix (including NULL) invalidates any previous prefix or dictionary - * Note 1 : Prefix buffer is referenced. It **must** outlive compression. - * Its content must remain unmodified during compression. - * Note 2 : If the intention is to diff some large src data blob with some prior version of itself, - * ensure that the window size is large enough to contain the entire source. - * See ZSTD_c_windowLog. - * Note 3 : Referencing a prefix involves building tables, which are dependent on compression parameters. - * It's a CPU consuming operation, with non-negligible impact on latency. - * If there is a need to use the same prefix multiple times, consider loadDictionary instead. - * Note 4 : By default, the prefix is interpreted as raw content (ZSTD_dct_rawContent). - * Use experimental ZSTD_CCtx_refPrefix_advanced() to alter dictionary interpretation. */ -ZSTDLIB_API size_t ZSTD_CCtx_refPrefix(ZSTD_CCtx* cctx, - const void* prefix, size_t prefixSize); - -/*! ZSTD_DCtx_loadDictionary() : - * Create an internal DDict from dict buffer, - * to be used to decompress next frames. - * The dictionary remains valid for all future frames, until explicitly invalidated. - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Special : Adding a NULL (or 0-size) dictionary invalidates any previous dictionary, - * meaning "return to no-dictionary mode". - * Note 1 : Loading a dictionary involves building tables, - * which has a non-negligible impact on CPU usage and latency. - * It's recommended to "load once, use many times", to amortize the cost - * Note 2 :`dict` content will be copied internally, so `dict` can be released after loading. - * Use ZSTD_DCtx_loadDictionary_byReference() to reference dictionary content instead. - * Note 3 : Use ZSTD_DCtx_loadDictionary_advanced() to take control of - * how dictionary content is loaded and interpreted. - */ -ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary(ZSTD_DCtx* dctx, const void* dict, size_t dictSize); - -/*! ZSTD_DCtx_refDDict() : - * Reference a prepared dictionary, to be used to decompress next frames. - * The dictionary remains active for decompression of future frames using same DCtx. - * - * If called with ZSTD_d_refMultipleDDicts enabled, repeated calls of this function - * will store the DDict references in a table, and the DDict used for decompression - * will be determined at decompression time, as per the dict ID in the frame. - * The memory for the table is allocated on the first call to refDDict, and can be - * freed with ZSTD_freeDCtx(). - * - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Note 1 : Currently, only one dictionary can be managed. - * Referencing a new dictionary effectively "discards" any previous one. - * Special: referencing a NULL DDict means "return to no-dictionary mode". - * Note 2 : DDict is just referenced, its lifetime must outlive its usage from DCtx. - */ -ZSTDLIB_API size_t ZSTD_DCtx_refDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict); - -/*! ZSTD_DCtx_refPrefix() : - * Reference a prefix (single-usage dictionary) to decompress next frame. - * This is the reverse operation of ZSTD_CCtx_refPrefix(), - * and must use the same prefix as the one used during compression. - * Prefix is **only used once**. Reference is discarded at end of frame. - * End of frame is reached when ZSTD_decompressStream() returns 0. - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - * Note 1 : Adding any prefix (including NULL) invalidates any previously set prefix or dictionary - * Note 2 : Prefix buffer is referenced. It **must** outlive decompression. - * Prefix buffer must remain unmodified up to the end of frame, - * reached when ZSTD_decompressStream() returns 0. - * Note 3 : By default, the prefix is treated as raw content (ZSTD_dct_rawContent). - * Use ZSTD_CCtx_refPrefix_advanced() to alter dictMode (Experimental section) - * Note 4 : Referencing a raw content prefix has almost no cpu nor memory cost. - * A full dictionary is more costly, as it requires building tables. - */ -ZSTDLIB_API size_t ZSTD_DCtx_refPrefix(ZSTD_DCtx* dctx, - const void* prefix, size_t prefixSize); - -/* === Memory management === */ - -/*! ZSTD_sizeof_*() : - * These functions give the _current_ memory usage of selected object. - * Note that object memory usage can evolve (increase or decrease) over time. */ -ZSTDLIB_API size_t ZSTD_sizeof_CCtx(const ZSTD_CCtx* cctx); -ZSTDLIB_API size_t ZSTD_sizeof_DCtx(const ZSTD_DCtx* dctx); -ZSTDLIB_API size_t ZSTD_sizeof_CStream(const ZSTD_CStream* zcs); -ZSTDLIB_API size_t ZSTD_sizeof_DStream(const ZSTD_DStream* zds); -ZSTDLIB_API size_t ZSTD_sizeof_CDict(const ZSTD_CDict* cdict); -ZSTDLIB_API size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict); - -#endif /* ZSTD_H_235446 */ - - -/* ************************************************************************************** - * ADVANCED AND EXPERIMENTAL FUNCTIONS - **************************************************************************************** - * The definitions in the following section are considered experimental. - * They are provided for advanced scenarios. - * They should never be used with a dynamic library, as prototypes may change in the future. - * Use them only in association with static linking. - * ***************************************************************************************/ - -#if defined(ZSTD_STATIC_LINKING_ONLY) && !defined(ZSTD_H_ZSTD_STATIC_LINKING_ONLY) -#define ZSTD_H_ZSTD_STATIC_LINKING_ONLY - -/**************************************************************************************** - * experimental API (static linking only) - **************************************************************************************** - * The following symbols and constants - * are not planned to join "stable API" status in the near future. - * They can still change in future versions. - * Some of them are planned to remain in the static_only section indefinitely. - * Some of them might be removed in the future (especially when redundant with existing stable functions) - * ***************************************************************************************/ - -#define ZSTD_FRAMEHEADERSIZE_PREFIX(format) ((format) == ZSTD_f_zstd1 ? 5 : 1) /* minimum input size required to query frame header size */ -#define ZSTD_FRAMEHEADERSIZE_MIN(format) ((format) == ZSTD_f_zstd1 ? 6 : 2) -#define ZSTD_FRAMEHEADERSIZE_MAX 18 /* can be useful for static allocation */ -#define ZSTD_SKIPPABLEHEADERSIZE 8 - -/* compression parameter bounds */ -#define ZSTD_WINDOWLOG_MAX_32 30 -#define ZSTD_WINDOWLOG_MAX_64 31 -#define ZSTD_WINDOWLOG_MAX ((int)(sizeof(size_t) == 4 ? ZSTD_WINDOWLOG_MAX_32 : ZSTD_WINDOWLOG_MAX_64)) -#define ZSTD_WINDOWLOG_MIN 10 -#define ZSTD_HASHLOG_MAX ((ZSTD_WINDOWLOG_MAX < 30) ? ZSTD_WINDOWLOG_MAX : 30) -#define ZSTD_HASHLOG_MIN 6 -#define ZSTD_CHAINLOG_MAX_32 29 -#define ZSTD_CHAINLOG_MAX_64 30 -#define ZSTD_CHAINLOG_MAX ((int)(sizeof(size_t) == 4 ? ZSTD_CHAINLOG_MAX_32 : ZSTD_CHAINLOG_MAX_64)) -#define ZSTD_CHAINLOG_MIN ZSTD_HASHLOG_MIN -#define ZSTD_SEARCHLOG_MAX (ZSTD_WINDOWLOG_MAX-1) -#define ZSTD_SEARCHLOG_MIN 1 -#define ZSTD_MINMATCH_MAX 7 /* only for ZSTD_fast, other strategies are limited to 6 */ -#define ZSTD_MINMATCH_MIN 3 /* only for ZSTD_btopt+, faster strategies are limited to 4 */ -#define ZSTD_TARGETLENGTH_MAX ZSTD_BLOCKSIZE_MAX -#define ZSTD_TARGETLENGTH_MIN 0 /* note : comparing this constant to an unsigned results in a tautological test */ -#define ZSTD_STRATEGY_MIN ZSTD_fast -#define ZSTD_STRATEGY_MAX ZSTD_btultra2 - - -#define ZSTD_OVERLAPLOG_MIN 0 -#define ZSTD_OVERLAPLOG_MAX 9 - -#define ZSTD_WINDOWLOG_LIMIT_DEFAULT 27 /* by default, the streaming decoder will refuse any frame - * requiring larger than (1< 0: - * If litLength != 0: - * rep == 1 --> offset == repeat_offset_1 - * rep == 2 --> offset == repeat_offset_2 - * rep == 3 --> offset == repeat_offset_3 - * If litLength == 0: - * rep == 1 --> offset == repeat_offset_2 - * rep == 2 --> offset == repeat_offset_3 - * rep == 3 --> offset == repeat_offset_1 - 1 - * - * Note: This field is optional. ZSTD_generateSequences() will calculate the value of - * 'rep', but repeat offsets do not necessarily need to be calculated from an external - * sequence provider's perspective. For example, ZSTD_compressSequences() does not - * use this 'rep' field at all (as of now). - */ -} ZSTD_Sequence; - -typedef struct { - unsigned windowLog; /**< largest match distance : larger == more compression, more memory needed during decompression */ - unsigned chainLog; /**< fully searched segment : larger == more compression, slower, more memory (useless for fast) */ - unsigned hashLog; /**< dispatch table : larger == faster, more memory */ - unsigned searchLog; /**< nb of searches : larger == more compression, slower */ - unsigned minMatch; /**< match length searched : larger == faster decompression, sometimes less compression */ - unsigned targetLength; /**< acceptable match size for optimal parser (only) : larger == more compression, slower */ - ZSTD_strategy strategy; /**< see ZSTD_strategy definition above */ -} ZSTD_compressionParameters; - -typedef struct { - int contentSizeFlag; /**< 1: content size will be in frame header (when known) */ - int checksumFlag; /**< 1: generate a 32-bits checksum using XXH64 algorithm at end of frame, for error detection */ - int noDictIDFlag; /**< 1: no dictID will be saved into frame header (dictID is only useful for dictionary compression) */ -} ZSTD_frameParameters; - -typedef struct { - ZSTD_compressionParameters cParams; - ZSTD_frameParameters fParams; -} ZSTD_parameters; - -typedef enum { - ZSTD_dct_auto = 0, /* dictionary is "full" when starting with ZSTD_MAGIC_DICTIONARY, otherwise it is "rawContent" */ - ZSTD_dct_rawContent = 1, /* ensures dictionary is always loaded as rawContent, even if it starts with ZSTD_MAGIC_DICTIONARY */ - ZSTD_dct_fullDict = 2 /* refuses to load a dictionary if it does not respect Zstandard's specification, starting with ZSTD_MAGIC_DICTIONARY */ -} ZSTD_dictContentType_e; - -typedef enum { - ZSTD_dlm_byCopy = 0, /**< Copy dictionary content internally */ - ZSTD_dlm_byRef = 1 /**< Reference dictionary content -- the dictionary buffer must outlive its users. */ -} ZSTD_dictLoadMethod_e; - -typedef enum { - ZSTD_f_zstd1 = 0, /* zstd frame format, specified in zstd_compression_format.md (default) */ - ZSTD_f_zstd1_magicless = 1 /* Variant of zstd frame format, without initial 4-bytes magic number. - * Useful to save 4 bytes per generated frame. - * Decoder cannot recognise automatically this format, requiring this instruction. */ -} ZSTD_format_e; - -typedef enum { - /* Note: this enum controls ZSTD_d_forceIgnoreChecksum */ - ZSTD_d_validateChecksum = 0, - ZSTD_d_ignoreChecksum = 1 -} ZSTD_forceIgnoreChecksum_e; - -typedef enum { - /* Note: this enum controls ZSTD_d_refMultipleDDicts */ - ZSTD_rmd_refSingleDDict = 0, - ZSTD_rmd_refMultipleDDicts = 1 -} ZSTD_refMultipleDDicts_e; - -typedef enum { - /* Note: this enum and the behavior it controls are effectively internal - * implementation details of the compressor. They are expected to continue - * to evolve and should be considered only in the context of extremely - * advanced performance tuning. - * - * Zstd currently supports the use of a CDict in three ways: - * - * - The contents of the CDict can be copied into the working context. This - * means that the compression can search both the dictionary and input - * while operating on a single set of internal tables. This makes - * the compression faster per-byte of input. However, the initial copy of - * the CDict's tables incurs a fixed cost at the beginning of the - * compression. For small compressions (< 8 KB), that copy can dominate - * the cost of the compression. - * - * - The CDict's tables can be used in-place. In this model, compression is - * slower per input byte, because the compressor has to search two sets of - * tables. However, this model incurs no start-up cost (as long as the - * working context's tables can be reused). For small inputs, this can be - * faster than copying the CDict's tables. - * - * - The CDict's tables are not used at all, and instead we use the working - * context alone to reload the dictionary and use params based on the source - * size. See ZSTD_compress_insertDictionary() and ZSTD_compress_usingDict(). - * This method is effective when the dictionary sizes are very small relative - * to the input size, and the input size is fairly large to begin with. - * - * Zstd has a simple internal heuristic that selects which strategy to use - * at the beginning of a compression. However, if experimentation shows that - * Zstd is making poor choices, it is possible to override that choice with - * this enum. - */ - ZSTD_dictDefaultAttach = 0, /* Use the default heuristic. */ - ZSTD_dictForceAttach = 1, /* Never copy the dictionary. */ - ZSTD_dictForceCopy = 2, /* Always copy the dictionary. */ - ZSTD_dictForceLoad = 3 /* Always reload the dictionary */ -} ZSTD_dictAttachPref_e; - -typedef enum { - ZSTD_lcm_auto = 0, /**< Automatically determine the compression mode based on the compression level. - * Negative compression levels will be uncompressed, and positive compression - * levels will be compressed. */ - ZSTD_lcm_huffman = 1, /**< Always attempt Huffman compression. Uncompressed literals will still be - * emitted if Huffman compression is not profitable. */ - ZSTD_lcm_uncompressed = 2 /**< Always emit uncompressed literals. */ -} ZSTD_literalCompressionMode_e; - - -/*************************************** -* Frame size functions -***************************************/ - -/*! ZSTD_findDecompressedSize() : - * `src` should point to the start of a series of ZSTD encoded and/or skippable frames - * `srcSize` must be the _exact_ size of this series - * (i.e. there should be a frame boundary at `src + srcSize`) - * @return : - decompressed size of all data in all successive frames - * - if the decompressed size cannot be determined: ZSTD_CONTENTSIZE_UNKNOWN - * - if an error occurred: ZSTD_CONTENTSIZE_ERROR - * - * note 1 : decompressed size is an optional field, that may not be present, especially in streaming mode. - * When `return==ZSTD_CONTENTSIZE_UNKNOWN`, data to decompress could be any size. - * In which case, it's necessary to use streaming mode to decompress data. - * note 2 : decompressed size is always present when compression is done with ZSTD_compress() - * note 3 : decompressed size can be very large (64-bits value), - * potentially larger than what local system can handle as a single memory segment. - * In which case, it's necessary to use streaming mode to decompress data. - * note 4 : If source is untrusted, decompressed size could be wrong or intentionally modified. - * Always ensure result fits within application's authorized limits. - * Each application can set its own limits. - * note 5 : ZSTD_findDecompressedSize handles multiple frames, and so it must traverse the input to - * read each contained frame header. This is fast as most of the data is skipped, - * however it does mean that all frame data must be present and valid. */ -ZSTDLIB_API unsigned long long ZSTD_findDecompressedSize(const void* src, size_t srcSize); - -/*! ZSTD_decompressBound() : - * `src` should point to the start of a series of ZSTD encoded and/or skippable frames - * `srcSize` must be the _exact_ size of this series - * (i.e. there should be a frame boundary at `src + srcSize`) - * @return : - upper-bound for the decompressed size of all data in all successive frames - * - if an error occurred: ZSTD_CONTENTSIZE_ERROR - * - * note 1 : an error can occur if `src` contains an invalid or incorrectly formatted frame. - * note 2 : the upper-bound is exact when the decompressed size field is available in every ZSTD encoded frame of `src`. - * in this case, `ZSTD_findDecompressedSize` and `ZSTD_decompressBound` return the same value. - * note 3 : when the decompressed size field isn't available, the upper-bound for that frame is calculated by: - * upper-bound = # blocks * min(128 KB, Window_Size) - */ -ZSTDLIB_API unsigned long long ZSTD_decompressBound(const void* src, size_t srcSize); - -/*! ZSTD_frameHeaderSize() : - * srcSize must be >= ZSTD_FRAMEHEADERSIZE_PREFIX. - * @return : size of the Frame Header, - * or an error code (if srcSize is too small) */ -ZSTDLIB_API size_t ZSTD_frameHeaderSize(const void* src, size_t srcSize); - -typedef enum { - ZSTD_sf_noBlockDelimiters = 0, /* Representation of ZSTD_Sequence has no block delimiters, sequences only */ - ZSTD_sf_explicitBlockDelimiters = 1 /* Representation of ZSTD_Sequence contains explicit block delimiters */ -} ZSTD_sequenceFormat_e; - -/*! ZSTD_generateSequences() : - * Generate sequences using ZSTD_compress2, given a source buffer. - * - * Each block will end with a dummy sequence - * with offset == 0, matchLength == 0, and litLength == length of last literals. - * litLength may be == 0, and if so, then the sequence of (of: 0 ml: 0 ll: 0) - * simply acts as a block delimiter. - * - * zc can be used to insert custom compression params. - * This function invokes ZSTD_compress2 - * - * The output of this function can be fed into ZSTD_compressSequences() with CCtx - * setting of ZSTD_c_blockDelimiters as ZSTD_sf_explicitBlockDelimiters - * @return : number of sequences generated - */ - -ZSTDLIB_API size_t ZSTD_generateSequences(ZSTD_CCtx* zc, ZSTD_Sequence* outSeqs, - size_t outSeqsSize, const void* src, size_t srcSize); - -/*! ZSTD_mergeBlockDelimiters() : - * Given an array of ZSTD_Sequence, remove all sequences that represent block delimiters/last literals - * by merging them into into the literals of the next sequence. - * - * As such, the final generated result has no explicit representation of block boundaries, - * and the final last literals segment is not represented in the sequences. - * - * The output of this function can be fed into ZSTD_compressSequences() with CCtx - * setting of ZSTD_c_blockDelimiters as ZSTD_sf_noBlockDelimiters - * @return : number of sequences left after merging - */ -ZSTDLIB_API size_t ZSTD_mergeBlockDelimiters(ZSTD_Sequence* sequences, size_t seqsSize); - -/*! ZSTD_compressSequences() : - * Compress an array of ZSTD_Sequence, generated from the original source buffer, into dst. - * If a dictionary is included, then the cctx should reference the dict. (see: ZSTD_CCtx_refCDict(), ZSTD_CCtx_loadDictionary(), etc.) - * The entire source is compressed into a single frame. - * - * The compression behavior changes based on cctx params. In particular: - * If ZSTD_c_blockDelimiters == ZSTD_sf_noBlockDelimiters, the array of ZSTD_Sequence is expected to contain - * no block delimiters (defined in ZSTD_Sequence). Block boundaries are roughly determined based on - * the block size derived from the cctx, and sequences may be split. This is the default setting. - * - * If ZSTD_c_blockDelimiters == ZSTD_sf_explicitBlockDelimiters, the array of ZSTD_Sequence is expected to contain - * block delimiters (defined in ZSTD_Sequence). Behavior is undefined if no block delimiters are provided. - * - * If ZSTD_c_validateSequences == 0, this function will blindly accept the sequences provided. Invalid sequences cause undefined - * behavior. If ZSTD_c_validateSequences == 1, then if sequence is invalid (see doc/zstd_compression_format.md for - * specifics regarding offset/matchlength requirements) then the function will bail out and return an error. - * - * In addition to the two adjustable experimental params, there are other important cctx params. - * - ZSTD_c_minMatch MUST be set as less than or equal to the smallest match generated by the match finder. It has a minimum value of ZSTD_MINMATCH_MIN. - * - ZSTD_c_compressionLevel accordingly adjusts the strength of the entropy coder, as it would in typical compression. - * - ZSTD_c_windowLog affects offset validation: this function will return an error at higher debug levels if a provided offset - * is larger than what the spec allows for a given window log and dictionary (if present). See: doc/zstd_compression_format.md - * - * Note: Repcodes are, as of now, always re-calculated within this function, so ZSTD_Sequence::rep is unused. - * Note 2: Once we integrate ability to ingest repcodes, the explicit block delims mode must respect those repcodes exactly, - * and cannot emit an RLE block that disagrees with the repcode history - * @return : final compressed size or a ZSTD error. - */ -ZSTDLIB_API size_t ZSTD_compressSequences(ZSTD_CCtx* const cctx, void* dst, size_t dstSize, - const ZSTD_Sequence* inSeqs, size_t inSeqsSize, - const void* src, size_t srcSize); - - -/*! ZSTD_writeSkippableFrame() : - * Generates a zstd skippable frame containing data given by src, and writes it to dst buffer. - * - * Skippable frames begin with a a 4-byte magic number. There are 16 possible choices of magic number, - * ranging from ZSTD_MAGIC_SKIPPABLE_START to ZSTD_MAGIC_SKIPPABLE_START+15. - * As such, the parameter magicVariant controls the exact skippable frame magic number variant used, so - * the magic number used will be ZSTD_MAGIC_SKIPPABLE_START + magicVariant. - * - * Returns an error if destination buffer is not large enough, if the source size is not representable - * with a 4-byte unsigned int, or if the parameter magicVariant is greater than 15 (and therefore invalid). - * - * @return : number of bytes written or a ZSTD error. - */ -ZSTDLIB_API size_t ZSTD_writeSkippableFrame(void* dst, size_t dstCapacity, - const void* src, size_t srcSize, unsigned magicVariant); - - -/*************************************** -* Memory management -***************************************/ - -/*! ZSTD_estimate*() : - * These functions make it possible to estimate memory usage - * of a future {D,C}Ctx, before its creation. - * - * ZSTD_estimateCCtxSize() will provide a memory budget large enough - * for any compression level up to selected one. - * Note : Unlike ZSTD_estimateCStreamSize*(), this estimate - * does not include space for a window buffer. - * Therefore, the estimation is only guaranteed for single-shot compressions, not streaming. - * The estimate will assume the input may be arbitrarily large, - * which is the worst case. - * - * When srcSize can be bound by a known and rather "small" value, - * this fact can be used to provide a tighter estimation - * because the CCtx compression context will need less memory. - * This tighter estimation can be provided by more advanced functions - * ZSTD_estimateCCtxSize_usingCParams(), which can be used in tandem with ZSTD_getCParams(), - * and ZSTD_estimateCCtxSize_usingCCtxParams(), which can be used in tandem with ZSTD_CCtxParams_setParameter(). - * Both can be used to estimate memory using custom compression parameters and arbitrary srcSize limits. - * - * Note 2 : only single-threaded compression is supported. - * ZSTD_estimateCCtxSize_usingCCtxParams() will return an error code if ZSTD_c_nbWorkers is >= 1. - */ -ZSTDLIB_API size_t ZSTD_estimateCCtxSize(int compressionLevel); -ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCParams(ZSTD_compressionParameters cParams); -ZSTDLIB_API size_t ZSTD_estimateCCtxSize_usingCCtxParams(const ZSTD_CCtx_params* params); -ZSTDLIB_API size_t ZSTD_estimateDCtxSize(void); - -/*! ZSTD_estimateCStreamSize() : - * ZSTD_estimateCStreamSize() will provide a budget large enough for any compression level up to selected one. - * It will also consider src size to be arbitrarily "large", which is worst case. - * If srcSize is known to always be small, ZSTD_estimateCStreamSize_usingCParams() can provide a tighter estimation. - * ZSTD_estimateCStreamSize_usingCParams() can be used in tandem with ZSTD_getCParams() to create cParams from compressionLevel. - * ZSTD_estimateCStreamSize_usingCCtxParams() can be used in tandem with ZSTD_CCtxParams_setParameter(). Only single-threaded compression is supported. This function will return an error code if ZSTD_c_nbWorkers is >= 1. - * Note : CStream size estimation is only correct for single-threaded compression. - * ZSTD_DStream memory budget depends on window Size. - * This information can be passed manually, using ZSTD_estimateDStreamSize, - * or deducted from a valid frame Header, using ZSTD_estimateDStreamSize_fromFrame(); - * Note : if streaming is init with function ZSTD_init?Stream_usingDict(), - * an internal ?Dict will be created, which additional size is not estimated here. - * In this case, get total size by adding ZSTD_estimate?DictSize */ -ZSTDLIB_API size_t ZSTD_estimateCStreamSize(int compressionLevel); -ZSTDLIB_API size_t ZSTD_estimateCStreamSize_usingCParams(ZSTD_compressionParameters cParams); -ZSTDLIB_API size_t ZSTD_estimateCStreamSize_usingCCtxParams(const ZSTD_CCtx_params* params); -ZSTDLIB_API size_t ZSTD_estimateDStreamSize(size_t windowSize); -ZSTDLIB_API size_t ZSTD_estimateDStreamSize_fromFrame(const void* src, size_t srcSize); - -/*! ZSTD_estimate?DictSize() : - * ZSTD_estimateCDictSize() will bet that src size is relatively "small", and content is copied, like ZSTD_createCDict(). - * ZSTD_estimateCDictSize_advanced() makes it possible to control compression parameters precisely, like ZSTD_createCDict_advanced(). - * Note : dictionaries created by reference (`ZSTD_dlm_byRef`) are logically smaller. - */ -ZSTDLIB_API size_t ZSTD_estimateCDictSize(size_t dictSize, int compressionLevel); -ZSTDLIB_API size_t ZSTD_estimateCDictSize_advanced(size_t dictSize, ZSTD_compressionParameters cParams, ZSTD_dictLoadMethod_e dictLoadMethod); -ZSTDLIB_API size_t ZSTD_estimateDDictSize(size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod); - -/*! ZSTD_initStatic*() : - * Initialize an object using a pre-allocated fixed-size buffer. - * workspace: The memory area to emplace the object into. - * Provided pointer *must be 8-bytes aligned*. - * Buffer must outlive object. - * workspaceSize: Use ZSTD_estimate*Size() to determine - * how large workspace must be to support target scenario. - * @return : pointer to object (same address as workspace, just different type), - * or NULL if error (size too small, incorrect alignment, etc.) - * Note : zstd will never resize nor malloc() when using a static buffer. - * If the object requires more memory than available, - * zstd will just error out (typically ZSTD_error_memory_allocation). - * Note 2 : there is no corresponding "free" function. - * Since workspace is allocated externally, it must be freed externally too. - * Note 3 : cParams : use ZSTD_getCParams() to convert a compression level - * into its associated cParams. - * Limitation 1 : currently not compatible with internal dictionary creation, triggered by - * ZSTD_CCtx_loadDictionary(), ZSTD_initCStream_usingDict() or ZSTD_initDStream_usingDict(). - * Limitation 2 : static cctx currently not compatible with multi-threading. - * Limitation 3 : static dctx is incompatible with legacy support. - */ -ZSTDLIB_API ZSTD_CCtx* ZSTD_initStaticCCtx(void* workspace, size_t workspaceSize); -ZSTDLIB_API ZSTD_CStream* ZSTD_initStaticCStream(void* workspace, size_t workspaceSize); /**< same as ZSTD_initStaticCCtx() */ - -ZSTDLIB_API ZSTD_DCtx* ZSTD_initStaticDCtx(void* workspace, size_t workspaceSize); -ZSTDLIB_API ZSTD_DStream* ZSTD_initStaticDStream(void* workspace, size_t workspaceSize); /**< same as ZSTD_initStaticDCtx() */ - -ZSTDLIB_API const ZSTD_CDict* ZSTD_initStaticCDict( - void* workspace, size_t workspaceSize, - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType, - ZSTD_compressionParameters cParams); - -ZSTDLIB_API const ZSTD_DDict* ZSTD_initStaticDDict( - void* workspace, size_t workspaceSize, - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType); - - -/*! Custom memory allocation : - * These prototypes make it possible to pass your own allocation/free functions. - * ZSTD_customMem is provided at creation time, using ZSTD_create*_advanced() variants listed below. - * All allocation/free operations will be completed using these custom variants instead of regular ones. - */ -typedef void* (*ZSTD_allocFunction) (void* opaque, size_t size); -typedef void (*ZSTD_freeFunction) (void* opaque, void* address); -typedef struct { ZSTD_allocFunction customAlloc; ZSTD_freeFunction customFree; void* opaque; } ZSTD_customMem; -static -#ifdef __GNUC__ -__attribute__((__unused__)) -#endif -ZSTD_customMem const ZSTD_defaultCMem = { NULL, NULL, NULL }; /**< this constant defers to stdlib's functions */ - -ZSTDLIB_API ZSTD_CCtx* ZSTD_createCCtx_advanced(ZSTD_customMem customMem); -ZSTDLIB_API ZSTD_CStream* ZSTD_createCStream_advanced(ZSTD_customMem customMem); -ZSTDLIB_API ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem); -ZSTDLIB_API ZSTD_DStream* ZSTD_createDStream_advanced(ZSTD_customMem customMem); - -ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced(const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType, - ZSTD_compressionParameters cParams, - ZSTD_customMem customMem); - -/* ! Thread pool : - * These prototypes make it possible to share a thread pool among multiple compression contexts. - * This can limit resources for applications with multiple threads where each one uses - * a threaded compression mode (via ZSTD_c_nbWorkers parameter). - * ZSTD_createThreadPool creates a new thread pool with a given number of threads. - * Note that the lifetime of such pool must exist while being used. - * ZSTD_CCtx_refThreadPool assigns a thread pool to a context (use NULL argument value - * to use an internal thread pool). - * ZSTD_freeThreadPool frees a thread pool. - */ -typedef struct POOL_ctx_s ZSTD_threadPool; -ZSTDLIB_API ZSTD_threadPool* ZSTD_createThreadPool(size_t numThreads); -ZSTDLIB_API void ZSTD_freeThreadPool (ZSTD_threadPool* pool); -ZSTDLIB_API size_t ZSTD_CCtx_refThreadPool(ZSTD_CCtx* cctx, ZSTD_threadPool* pool); - - -/* - * This API is temporary and is expected to change or disappear in the future! - */ -ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_advanced2( - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType, - const ZSTD_CCtx_params* cctxParams, - ZSTD_customMem customMem); - -ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_advanced( - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType, - ZSTD_customMem customMem); - - -/*************************************** -* Advanced compression functions -***************************************/ - -/*! ZSTD_createCDict_byReference() : - * Create a digested dictionary for compression - * Dictionary content is just referenced, not duplicated. - * As a consequence, `dictBuffer` **must** outlive CDict, - * and its content must remain unmodified throughout the lifetime of CDict. - * note: equivalent to ZSTD_createCDict_advanced(), with dictLoadMethod==ZSTD_dlm_byRef */ -ZSTDLIB_API ZSTD_CDict* ZSTD_createCDict_byReference(const void* dictBuffer, size_t dictSize, int compressionLevel); - -/*! ZSTD_getDictID_fromCDict() : - * Provides the dictID of the dictionary loaded into `cdict`. - * If @return == 0, the dictionary is not conformant to Zstandard specification, or empty. - * Non-conformant dictionaries can still be loaded, but as content-only dictionaries. */ -ZSTDLIB_API unsigned ZSTD_getDictID_fromCDict(const ZSTD_CDict* cdict); - -/*! ZSTD_getCParams() : - * @return ZSTD_compressionParameters structure for a selected compression level and estimated srcSize. - * `estimatedSrcSize` value is optional, select 0 if not known */ -ZSTDLIB_API ZSTD_compressionParameters ZSTD_getCParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize); - -/*! ZSTD_getParams() : - * same as ZSTD_getCParams(), but @return a full `ZSTD_parameters` object instead of sub-component `ZSTD_compressionParameters`. - * All fields of `ZSTD_frameParameters` are set to default : contentSize=1, checksum=0, noDictID=0 */ -ZSTDLIB_API ZSTD_parameters ZSTD_getParams(int compressionLevel, unsigned long long estimatedSrcSize, size_t dictSize); - -/*! ZSTD_checkCParams() : - * Ensure param values remain within authorized range. - * @return 0 on success, or an error code (can be checked with ZSTD_isError()) */ -ZSTDLIB_API size_t ZSTD_checkCParams(ZSTD_compressionParameters params); - -/*! ZSTD_adjustCParams() : - * optimize params for a given `srcSize` and `dictSize`. - * `srcSize` can be unknown, in which case use ZSTD_CONTENTSIZE_UNKNOWN. - * `dictSize` must be `0` when there is no dictionary. - * cPar can be invalid : all parameters will be clamped within valid range in the @return struct. - * This function never fails (wide contract) */ -ZSTDLIB_API ZSTD_compressionParameters ZSTD_adjustCParams(ZSTD_compressionParameters cPar, unsigned long long srcSize, size_t dictSize); - -/*! ZSTD_compress_advanced() : - * Note : this function is now DEPRECATED. - * It can be replaced by ZSTD_compress2(), in combination with ZSTD_CCtx_setParameter() and other parameter setters. - * This prototype will be marked as deprecated and generate compilation warning on reaching v1.5.x */ -ZSTDLIB_API size_t ZSTD_compress_advanced(ZSTD_CCtx* cctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict,size_t dictSize, - ZSTD_parameters params); - -/*! ZSTD_compress_usingCDict_advanced() : - * Note : this function is now REDUNDANT. - * It can be replaced by ZSTD_compress2(), in combination with ZSTD_CCtx_loadDictionary() and other parameter setters. - * This prototype will be marked as deprecated and generate compilation warning in some future version */ -ZSTDLIB_API size_t ZSTD_compress_usingCDict_advanced(ZSTD_CCtx* cctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const ZSTD_CDict* cdict, - ZSTD_frameParameters fParams); - - -/*! ZSTD_CCtx_loadDictionary_byReference() : - * Same as ZSTD_CCtx_loadDictionary(), but dictionary content is referenced, instead of being copied into CCtx. - * It saves some memory, but also requires that `dict` outlives its usage within `cctx` */ -ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_byReference(ZSTD_CCtx* cctx, const void* dict, size_t dictSize); - -/*! ZSTD_CCtx_loadDictionary_advanced() : - * Same as ZSTD_CCtx_loadDictionary(), but gives finer control over - * how to load the dictionary (by copy ? by reference ?) - * and how to interpret it (automatic ? force raw mode ? full mode only ?) */ -ZSTDLIB_API size_t ZSTD_CCtx_loadDictionary_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType); - -/*! ZSTD_CCtx_refPrefix_advanced() : - * Same as ZSTD_CCtx_refPrefix(), but gives finer control over - * how to interpret prefix content (automatic ? force raw mode (default) ? full mode only ?) */ -ZSTDLIB_API size_t ZSTD_CCtx_refPrefix_advanced(ZSTD_CCtx* cctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType); - -/* === experimental parameters === */ -/* these parameters can be used with ZSTD_setParameter() - * they are not guaranteed to remain supported in the future */ - - /* Enables rsyncable mode, - * which makes compressed files more rsync friendly - * by adding periodic synchronization points to the compressed data. - * The target average block size is ZSTD_c_jobSize / 2. - * It's possible to modify the job size to increase or decrease - * the granularity of the synchronization point. - * Once the jobSize is smaller than the window size, - * it will result in compression ratio degradation. - * NOTE 1: rsyncable mode only works when multithreading is enabled. - * NOTE 2: rsyncable performs poorly in combination with long range mode, - * since it will decrease the effectiveness of synchronization points, - * though mileage may vary. - * NOTE 3: Rsyncable mode limits maximum compression speed to ~400 MB/s. - * If the selected compression level is already running significantly slower, - * the overall speed won't be significantly impacted. - */ - #define ZSTD_c_rsyncable ZSTD_c_experimentalParam1 - -/* Select a compression format. - * The value must be of type ZSTD_format_e. - * See ZSTD_format_e enum definition for details */ -#define ZSTD_c_format ZSTD_c_experimentalParam2 - -/* Force back-reference distances to remain < windowSize, - * even when referencing into Dictionary content (default:0) */ -#define ZSTD_c_forceMaxWindow ZSTD_c_experimentalParam3 - -/* Controls whether the contents of a CDict - * are used in place, or copied into the working context. - * Accepts values from the ZSTD_dictAttachPref_e enum. - * See the comments on that enum for an explanation of the feature. */ -#define ZSTD_c_forceAttachDict ZSTD_c_experimentalParam4 - -/* Controls how the literals are compressed (default is auto). - * The value must be of type ZSTD_literalCompressionMode_e. - * See ZSTD_literalCompressionMode_t enum definition for details. - */ -#define ZSTD_c_literalCompressionMode ZSTD_c_experimentalParam5 - -/* Tries to fit compressed block size to be around targetCBlockSize. - * No target when targetCBlockSize == 0. - * There is no guarantee on compressed block size (default:0) */ -#define ZSTD_c_targetCBlockSize ZSTD_c_experimentalParam6 - -/* User's best guess of source size. - * Hint is not valid when srcSizeHint == 0. - * There is no guarantee that hint is close to actual source size, - * but compression ratio may regress significantly if guess considerably underestimates */ -#define ZSTD_c_srcSizeHint ZSTD_c_experimentalParam7 - -/* Controls whether the new and experimental "dedicated dictionary search - * structure" can be used. This feature is still rough around the edges, be - * prepared for surprising behavior! - * - * How to use it: - * - * When using a CDict, whether to use this feature or not is controlled at - * CDict creation, and it must be set in a CCtxParams set passed into that - * construction (via ZSTD_createCDict_advanced2()). A compression will then - * use the feature or not based on how the CDict was constructed; the value of - * this param, set in the CCtx, will have no effect. - * - * However, when a dictionary buffer is passed into a CCtx, such as via - * ZSTD_CCtx_loadDictionary(), this param can be set on the CCtx to control - * whether the CDict that is created internally can use the feature or not. - * - * What it does: - * - * Normally, the internal data structures of the CDict are analogous to what - * would be stored in a CCtx after compressing the contents of a dictionary. - * To an approximation, a compression using a dictionary can then use those - * data structures to simply continue what is effectively a streaming - * compression where the simulated compression of the dictionary left off. - * Which is to say, the search structures in the CDict are normally the same - * format as in the CCtx. - * - * It is possible to do better, since the CDict is not like a CCtx: the search - * structures are written once during CDict creation, and then are only read - * after that, while the search structures in the CCtx are both read and - * written as the compression goes along. This means we can choose a search - * structure for the dictionary that is read-optimized. - * - * This feature enables the use of that different structure. - * - * Note that some of the members of the ZSTD_compressionParameters struct have - * different semantics and constraints in the dedicated search structure. It is - * highly recommended that you simply set a compression level in the CCtxParams - * you pass into the CDict creation call, and avoid messing with the cParams - * directly. - * - * Effects: - * - * This will only have any effect when the selected ZSTD_strategy - * implementation supports this feature. Currently, that's limited to - * ZSTD_greedy, ZSTD_lazy, and ZSTD_lazy2. - * - * Note that this means that the CDict tables can no longer be copied into the - * CCtx, so the dict attachment mode ZSTD_dictForceCopy will no longer be - * useable. The dictionary can only be attached or reloaded. - * - * In general, you should expect compression to be faster--sometimes very much - * so--and CDict creation to be slightly slower. Eventually, we will probably - * make this mode the default. - */ -#define ZSTD_c_enableDedicatedDictSearch ZSTD_c_experimentalParam8 - -/* ZSTD_c_stableInBuffer - * Experimental parameter. - * Default is 0 == disabled. Set to 1 to enable. - * - * Tells the compressor that the ZSTD_inBuffer will ALWAYS be the same - * between calls, except for the modifications that zstd makes to pos (the - * caller must not modify pos). This is checked by the compressor, and - * compression will fail if it ever changes. This means the only flush - * mode that makes sense is ZSTD_e_end, so zstd will error if ZSTD_e_end - * is not used. The data in the ZSTD_inBuffer in the range [src, src + pos) - * MUST not be modified during compression or you will get data corruption. - * - * When this flag is enabled zstd won't allocate an input window buffer, - * because the user guarantees it can reference the ZSTD_inBuffer until - * the frame is complete. But, it will still allocate an output buffer - * large enough to fit a block (see ZSTD_c_stableOutBuffer). This will also - * avoid the memcpy() from the input buffer to the input window buffer. - * - * NOTE: ZSTD_compressStream2() will error if ZSTD_e_end is not used. - * That means this flag cannot be used with ZSTD_compressStream(). - * - * NOTE: So long as the ZSTD_inBuffer always points to valid memory, using - * this flag is ALWAYS memory safe, and will never access out-of-bounds - * memory. However, compression WILL fail if you violate the preconditions. - * - * WARNING: The data in the ZSTD_inBuffer in the range [dst, dst + pos) MUST - * not be modified during compression or you will get data corruption. This - * is because zstd needs to reference data in the ZSTD_inBuffer to find - * matches. Normally zstd maintains its own window buffer for this purpose, - * but passing this flag tells zstd to use the user provided buffer. - */ -#define ZSTD_c_stableInBuffer ZSTD_c_experimentalParam9 - -/* ZSTD_c_stableOutBuffer - * Experimental parameter. - * Default is 0 == disabled. Set to 1 to enable. - * - * Tells he compressor that the ZSTD_outBuffer will not be resized between - * calls. Specifically: (out.size - out.pos) will never grow. This gives the - * compressor the freedom to say: If the compressed data doesn't fit in the - * output buffer then return ZSTD_error_dstSizeTooSmall. This allows us to - * always decompress directly into the output buffer, instead of decompressing - * into an internal buffer and copying to the output buffer. - * - * When this flag is enabled zstd won't allocate an output buffer, because - * it can write directly to the ZSTD_outBuffer. It will still allocate the - * input window buffer (see ZSTD_c_stableInBuffer). - * - * Zstd will check that (out.size - out.pos) never grows and return an error - * if it does. While not strictly necessary, this should prevent surprises. - */ -#define ZSTD_c_stableOutBuffer ZSTD_c_experimentalParam10 - -/* ZSTD_c_blockDelimiters - * Default is 0 == ZSTD_sf_noBlockDelimiters. - * - * For use with sequence compression API: ZSTD_compressSequences(). - * - * Designates whether or not the given array of ZSTD_Sequence contains block delimiters - * and last literals, which are defined as sequences with offset == 0 and matchLength == 0. - * See the definition of ZSTD_Sequence for more specifics. - */ -#define ZSTD_c_blockDelimiters ZSTD_c_experimentalParam11 - -/* ZSTD_c_validateSequences - * Default is 0 == disabled. Set to 1 to enable sequence validation. - * - * For use with sequence compression API: ZSTD_compressSequences(). - * Designates whether or not we validate sequences provided to ZSTD_compressSequences() - * during function execution. - * - * Without validation, providing a sequence that does not conform to the zstd spec will cause - * undefined behavior, and may produce a corrupted block. - * - * With validation enabled, a if sequence is invalid (see doc/zstd_compression_format.md for - * specifics regarding offset/matchlength requirements) then the function will bail out and - * return an error. - * - */ -#define ZSTD_c_validateSequences ZSTD_c_experimentalParam12 - -/*! ZSTD_CCtx_getParameter() : - * Get the requested compression parameter value, selected by enum ZSTD_cParameter, - * and store it into int* value. - * @return : 0, or an error code (which can be tested with ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_CCtx_getParameter(const ZSTD_CCtx* cctx, ZSTD_cParameter param, int* value); - - -/*! ZSTD_CCtx_params : - * Quick howto : - * - ZSTD_createCCtxParams() : Create a ZSTD_CCtx_params structure - * - ZSTD_CCtxParams_setParameter() : Push parameters one by one into - * an existing ZSTD_CCtx_params structure. - * This is similar to - * ZSTD_CCtx_setParameter(). - * - ZSTD_CCtx_setParametersUsingCCtxParams() : Apply parameters to - * an existing CCtx. - * These parameters will be applied to - * all subsequent frames. - * - ZSTD_compressStream2() : Do compression using the CCtx. - * - ZSTD_freeCCtxParams() : Free the memory. - * - * This can be used with ZSTD_estimateCCtxSize_advanced_usingCCtxParams() - * for static allocation of CCtx for single-threaded compression. - */ -ZSTDLIB_API ZSTD_CCtx_params* ZSTD_createCCtxParams(void); -ZSTDLIB_API size_t ZSTD_freeCCtxParams(ZSTD_CCtx_params* params); - -/*! ZSTD_CCtxParams_reset() : - * Reset params to default values. - */ -ZSTDLIB_API size_t ZSTD_CCtxParams_reset(ZSTD_CCtx_params* params); - -/*! ZSTD_CCtxParams_init() : - * Initializes the compression parameters of cctxParams according to - * compression level. All other parameters are reset to their default values. - */ -ZSTDLIB_API size_t ZSTD_CCtxParams_init(ZSTD_CCtx_params* cctxParams, int compressionLevel); - -/*! ZSTD_CCtxParams_init_advanced() : - * Initializes the compression and frame parameters of cctxParams according to - * params. All other parameters are reset to their default values. - */ -ZSTDLIB_API size_t ZSTD_CCtxParams_init_advanced(ZSTD_CCtx_params* cctxParams, ZSTD_parameters params); - -/*! ZSTD_CCtxParams_setParameter() : - * Similar to ZSTD_CCtx_setParameter. - * Set one compression parameter, selected by enum ZSTD_cParameter. - * Parameters must be applied to a ZSTD_CCtx using - * ZSTD_CCtx_setParametersUsingCCtxParams(). - * @result : a code representing success or failure (which can be tested with - * ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_CCtxParams_setParameter(ZSTD_CCtx_params* params, ZSTD_cParameter param, int value); - -/*! ZSTD_CCtxParams_getParameter() : - * Similar to ZSTD_CCtx_getParameter. - * Get the requested value of one compression parameter, selected by enum ZSTD_cParameter. - * @result : 0, or an error code (which can be tested with ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_CCtxParams_getParameter(const ZSTD_CCtx_params* params, ZSTD_cParameter param, int* value); - -/*! ZSTD_CCtx_setParametersUsingCCtxParams() : - * Apply a set of ZSTD_CCtx_params to the compression context. - * This can be done even after compression is started, - * if nbWorkers==0, this will have no impact until a new compression is started. - * if nbWorkers>=1, new parameters will be picked up at next job, - * with a few restrictions (windowLog, pledgedSrcSize, nbWorkers, jobSize, and overlapLog are not updated). - */ -ZSTDLIB_API size_t ZSTD_CCtx_setParametersUsingCCtxParams( - ZSTD_CCtx* cctx, const ZSTD_CCtx_params* params); - -/*! ZSTD_compressStream2_simpleArgs() : - * Same as ZSTD_compressStream2(), - * but using only integral types as arguments. - * This variant might be helpful for binders from dynamic languages - * which have troubles handling structures containing memory pointers. - */ -ZSTDLIB_API size_t ZSTD_compressStream2_simpleArgs ( - ZSTD_CCtx* cctx, - void* dst, size_t dstCapacity, size_t* dstPos, - const void* src, size_t srcSize, size_t* srcPos, - ZSTD_EndDirective endOp); - - -/*************************************** -* Advanced decompression functions -***************************************/ - -/*! ZSTD_isFrame() : - * Tells if the content of `buffer` starts with a valid Frame Identifier. - * Note : Frame Identifier is 4 bytes. If `size < 4`, @return will always be 0. - * Note 2 : Legacy Frame Identifiers are considered valid only if Legacy Support is enabled. - * Note 3 : Skippable Frame Identifiers are considered valid. */ -ZSTDLIB_API unsigned ZSTD_isFrame(const void* buffer, size_t size); - -/*! ZSTD_createDDict_byReference() : - * Create a digested dictionary, ready to start decompression operation without startup delay. - * Dictionary content is referenced, and therefore stays in dictBuffer. - * It is important that dictBuffer outlives DDict, - * it must remain read accessible throughout the lifetime of DDict */ -ZSTDLIB_API ZSTD_DDict* ZSTD_createDDict_byReference(const void* dictBuffer, size_t dictSize); - -/*! ZSTD_DCtx_loadDictionary_byReference() : - * Same as ZSTD_DCtx_loadDictionary(), - * but references `dict` content instead of copying it into `dctx`. - * This saves memory if `dict` remains around., - * However, it's imperative that `dict` remains accessible (and unmodified) while being used, so it must outlive decompression. */ -ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary_byReference(ZSTD_DCtx* dctx, const void* dict, size_t dictSize); - -/*! ZSTD_DCtx_loadDictionary_advanced() : - * Same as ZSTD_DCtx_loadDictionary(), - * but gives direct control over - * how to load the dictionary (by copy ? by reference ?) - * and how to interpret it (automatic ? force raw mode ? full mode only ?). */ -ZSTDLIB_API size_t ZSTD_DCtx_loadDictionary_advanced(ZSTD_DCtx* dctx, const void* dict, size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod, ZSTD_dictContentType_e dictContentType); - -/*! ZSTD_DCtx_refPrefix_advanced() : - * Same as ZSTD_DCtx_refPrefix(), but gives finer control over - * how to interpret prefix content (automatic ? force raw mode (default) ? full mode only ?) */ -ZSTDLIB_API size_t ZSTD_DCtx_refPrefix_advanced(ZSTD_DCtx* dctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType); - -/*! ZSTD_DCtx_setMaxWindowSize() : - * Refuses allocating internal buffers for frames requiring a window size larger than provided limit. - * This protects a decoder context from reserving too much memory for itself (potential attack scenario). - * This parameter is only useful in streaming mode, since no internal buffer is allocated in single-pass mode. - * By default, a decompression context accepts all window sizes <= (1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT) - * @return : 0, or an error code (which can be tested using ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_DCtx_setMaxWindowSize(ZSTD_DCtx* dctx, size_t maxWindowSize); - -/*! ZSTD_DCtx_getParameter() : - * Get the requested decompression parameter value, selected by enum ZSTD_dParameter, - * and store it into int* value. - * @return : 0, or an error code (which can be tested with ZSTD_isError()). - */ -ZSTDLIB_API size_t ZSTD_DCtx_getParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int* value); - -/* ZSTD_d_format - * experimental parameter, - * allowing selection between ZSTD_format_e input compression formats - */ -#define ZSTD_d_format ZSTD_d_experimentalParam1 -/* ZSTD_d_stableOutBuffer - * Experimental parameter. - * Default is 0 == disabled. Set to 1 to enable. - * - * Tells the decompressor that the ZSTD_outBuffer will ALWAYS be the same - * between calls, except for the modifications that zstd makes to pos (the - * caller must not modify pos). This is checked by the decompressor, and - * decompression will fail if it ever changes. Therefore the ZSTD_outBuffer - * MUST be large enough to fit the entire decompressed frame. This will be - * checked when the frame content size is known. The data in the ZSTD_outBuffer - * in the range [dst, dst + pos) MUST not be modified during decompression - * or you will get data corruption. - * - * When this flags is enabled zstd won't allocate an output buffer, because - * it can write directly to the ZSTD_outBuffer, but it will still allocate - * an input buffer large enough to fit any compressed block. This will also - * avoid the memcpy() from the internal output buffer to the ZSTD_outBuffer. - * If you need to avoid the input buffer allocation use the buffer-less - * streaming API. - * - * NOTE: So long as the ZSTD_outBuffer always points to valid memory, using - * this flag is ALWAYS memory safe, and will never access out-of-bounds - * memory. However, decompression WILL fail if you violate the preconditions. - * - * WARNING: The data in the ZSTD_outBuffer in the range [dst, dst + pos) MUST - * not be modified during decompression or you will get data corruption. This - * is because zstd needs to reference data in the ZSTD_outBuffer to regenerate - * matches. Normally zstd maintains its own buffer for this purpose, but passing - * this flag tells zstd to use the user provided buffer. - */ -#define ZSTD_d_stableOutBuffer ZSTD_d_experimentalParam2 - -/* ZSTD_d_forceIgnoreChecksum - * Experimental parameter. - * Default is 0 == disabled. Set to 1 to enable - * - * Tells the decompressor to skip checksum validation during decompression, regardless - * of whether checksumming was specified during compression. This offers some - * slight performance benefits, and may be useful for debugging. - * Param has values of type ZSTD_forceIgnoreChecksum_e - */ -#define ZSTD_d_forceIgnoreChecksum ZSTD_d_experimentalParam3 - -/* ZSTD_d_refMultipleDDicts - * Experimental parameter. - * Default is 0 == disabled. Set to 1 to enable - * - * If enabled and dctx is allocated on the heap, then additional memory will be allocated - * to store references to multiple ZSTD_DDict. That is, multiple calls of ZSTD_refDDict() - * using a given ZSTD_DCtx, rather than overwriting the previous DDict reference, will instead - * store all references. At decompression time, the appropriate dictID is selected - * from the set of DDicts based on the dictID in the frame. - * - * Usage is simply calling ZSTD_refDDict() on multiple dict buffers. - * - * Param has values of byte ZSTD_refMultipleDDicts_e - * - * WARNING: Enabling this parameter and calling ZSTD_DCtx_refDDict(), will trigger memory - * allocation for the hash table. ZSTD_freeDCtx() also frees this memory. - * Memory is allocated as per ZSTD_DCtx::customMem. - * - * Although this function allocates memory for the table, the user is still responsible for - * memory management of the underlying ZSTD_DDict* themselves. - */ -#define ZSTD_d_refMultipleDDicts ZSTD_d_experimentalParam4 - - -/*! ZSTD_DCtx_setFormat() : - * Instruct the decoder context about what kind of data to decode next. - * This instruction is mandatory to decode data without a fully-formed header, - * such ZSTD_f_zstd1_magicless for example. - * @return : 0, or an error code (which can be tested using ZSTD_isError()). */ -ZSTDLIB_API size_t ZSTD_DCtx_setFormat(ZSTD_DCtx* dctx, ZSTD_format_e format); - -/*! ZSTD_decompressStream_simpleArgs() : - * Same as ZSTD_decompressStream(), - * but using only integral types as arguments. - * This can be helpful for binders from dynamic languages - * which have troubles handling structures containing memory pointers. - */ -ZSTDLIB_API size_t ZSTD_decompressStream_simpleArgs ( - ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, size_t* dstPos, - const void* src, size_t srcSize, size_t* srcPos); - - -/******************************************************************** -* Advanced streaming functions -* Warning : most of these functions are now redundant with the Advanced API. -* Once Advanced API reaches "stable" status, -* redundant functions will be deprecated, and then at some point removed. -********************************************************************/ - -/*===== Advanced Streaming compression functions =====*/ - -/*! ZSTD_initCStream_srcSize() : - * This function is deprecated, and equivalent to: - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * ZSTD_CCtx_refCDict(zcs, NULL); // clear the dictionary (if any) - * ZSTD_CCtx_setParameter(zcs, ZSTD_c_compressionLevel, compressionLevel); - * ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize); - * - * pledgedSrcSize must be correct. If it is not known at init time, use - * ZSTD_CONTENTSIZE_UNKNOWN. Note that, for compatibility with older programs, - * "0" also disables frame content size field. It may be enabled in the future. - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t -ZSTD_initCStream_srcSize(ZSTD_CStream* zcs, - int compressionLevel, - unsigned long long pledgedSrcSize); - -/*! ZSTD_initCStream_usingDict() : - * This function is deprecated, and is equivalent to: - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * ZSTD_CCtx_setParameter(zcs, ZSTD_c_compressionLevel, compressionLevel); - * ZSTD_CCtx_loadDictionary(zcs, dict, dictSize); - * - * Creates of an internal CDict (incompatible with static CCtx), except if - * dict == NULL or dictSize < 8, in which case no dict is used. - * Note: dict is loaded with ZSTD_dct_auto (treated as a full zstd dictionary if - * it begins with ZSTD_MAGIC_DICTIONARY, else as raw content) and ZSTD_dlm_byCopy. - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t -ZSTD_initCStream_usingDict(ZSTD_CStream* zcs, - const void* dict, size_t dictSize, - int compressionLevel); - -/*! ZSTD_initCStream_advanced() : - * This function is deprecated, and is approximately equivalent to: - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * // Pseudocode: Set each zstd parameter and leave the rest as-is. - * for ((param, value) : params) { - * ZSTD_CCtx_setParameter(zcs, param, value); - * } - * ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize); - * ZSTD_CCtx_loadDictionary(zcs, dict, dictSize); - * - * dict is loaded with ZSTD_dct_auto and ZSTD_dlm_byCopy. - * pledgedSrcSize must be correct. - * If srcSize is not known at init time, use value ZSTD_CONTENTSIZE_UNKNOWN. - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t -ZSTD_initCStream_advanced(ZSTD_CStream* zcs, - const void* dict, size_t dictSize, - ZSTD_parameters params, - unsigned long long pledgedSrcSize); - -/*! ZSTD_initCStream_usingCDict() : - * This function is deprecated, and equivalent to: - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * ZSTD_CCtx_refCDict(zcs, cdict); - * - * note : cdict will just be referenced, and must outlive compression session - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t ZSTD_initCStream_usingCDict(ZSTD_CStream* zcs, const ZSTD_CDict* cdict); - -/*! ZSTD_initCStream_usingCDict_advanced() : - * This function is DEPRECATED, and is approximately equivalent to: - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * // Pseudocode: Set each zstd frame parameter and leave the rest as-is. - * for ((fParam, value) : fParams) { - * ZSTD_CCtx_setParameter(zcs, fParam, value); - * } - * ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize); - * ZSTD_CCtx_refCDict(zcs, cdict); - * - * same as ZSTD_initCStream_usingCDict(), with control over frame parameters. - * pledgedSrcSize must be correct. If srcSize is not known at init time, use - * value ZSTD_CONTENTSIZE_UNKNOWN. - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t -ZSTD_initCStream_usingCDict_advanced(ZSTD_CStream* zcs, - const ZSTD_CDict* cdict, - ZSTD_frameParameters fParams, - unsigned long long pledgedSrcSize); - -/*! ZSTD_resetCStream() : - * This function is deprecated, and is equivalent to: - * ZSTD_CCtx_reset(zcs, ZSTD_reset_session_only); - * ZSTD_CCtx_setPledgedSrcSize(zcs, pledgedSrcSize); - * - * start a new frame, using same parameters from previous frame. - * This is typically useful to skip dictionary loading stage, since it will re-use it in-place. - * Note that zcs must be init at least once before using ZSTD_resetCStream(). - * If pledgedSrcSize is not known at reset time, use macro ZSTD_CONTENTSIZE_UNKNOWN. - * If pledgedSrcSize > 0, its value must be correct, as it will be written in header, and controlled at the end. - * For the time being, pledgedSrcSize==0 is interpreted as "srcSize unknown" for compatibility with older programs, - * but it will change to mean "empty" in future version, so use macro ZSTD_CONTENTSIZE_UNKNOWN instead. - * @return : 0, or an error code (which can be tested using ZSTD_isError()) - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t ZSTD_resetCStream(ZSTD_CStream* zcs, unsigned long long pledgedSrcSize); - - -typedef struct { - unsigned long long ingested; /* nb input bytes read and buffered */ - unsigned long long consumed; /* nb input bytes actually compressed */ - unsigned long long produced; /* nb of compressed bytes generated and buffered */ - unsigned long long flushed; /* nb of compressed bytes flushed : not provided; can be tracked from caller side */ - unsigned currentJobID; /* MT only : latest started job nb */ - unsigned nbActiveWorkers; /* MT only : nb of workers actively compressing at probe time */ -} ZSTD_frameProgression; - -/* ZSTD_getFrameProgression() : - * tells how much data has been ingested (read from input) - * consumed (input actually compressed) and produced (output) for current frame. - * Note : (ingested - consumed) is amount of input data buffered internally, not yet compressed. - * Aggregates progression inside active worker threads. - */ -ZSTDLIB_API ZSTD_frameProgression ZSTD_getFrameProgression(const ZSTD_CCtx* cctx); - -/*! ZSTD_toFlushNow() : - * Tell how many bytes are ready to be flushed immediately. - * Useful for multithreading scenarios (nbWorkers >= 1). - * Probe the oldest active job, defined as oldest job not yet entirely flushed, - * and check its output buffer. - * @return : amount of data stored in oldest job and ready to be flushed immediately. - * if @return == 0, it means either : - * + there is no active job (could be checked with ZSTD_frameProgression()), or - * + oldest job is still actively compressing data, - * but everything it has produced has also been flushed so far, - * therefore flush speed is limited by production speed of oldest job - * irrespective of the speed of concurrent (and newer) jobs. - */ -ZSTDLIB_API size_t ZSTD_toFlushNow(ZSTD_CCtx* cctx); - - -/*===== Advanced Streaming decompression functions =====*/ - -/*! - * This function is deprecated, and is equivalent to: - * - * ZSTD_DCtx_reset(zds, ZSTD_reset_session_only); - * ZSTD_DCtx_loadDictionary(zds, dict, dictSize); - * - * note: no dictionary will be used if dict == NULL or dictSize < 8 - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t ZSTD_initDStream_usingDict(ZSTD_DStream* zds, const void* dict, size_t dictSize); - -/*! - * This function is deprecated, and is equivalent to: - * - * ZSTD_DCtx_reset(zds, ZSTD_reset_session_only); - * ZSTD_DCtx_refDDict(zds, ddict); - * - * note : ddict is referenced, it must outlive decompression session - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t ZSTD_initDStream_usingDDict(ZSTD_DStream* zds, const ZSTD_DDict* ddict); - -/*! - * This function is deprecated, and is equivalent to: - * - * ZSTD_DCtx_reset(zds, ZSTD_reset_session_only); - * - * re-use decompression parameters from previous init; saves dictionary loading - * Note : this prototype will be marked as deprecated and generate compilation warnings on reaching v1.5.x - */ -ZSTDLIB_API size_t ZSTD_resetDStream(ZSTD_DStream* zds); - - -/********************************************************************* -* Buffer-less and synchronous inner streaming functions -* -* This is an advanced API, giving full control over buffer management, for users which need direct control over memory. -* But it's also a complex one, with several restrictions, documented below. -* Prefer normal streaming API for an easier experience. -********************************************************************* */ - -/** - Buffer-less streaming compression (synchronous mode) - - A ZSTD_CCtx object is required to track streaming operations. - Use ZSTD_createCCtx() / ZSTD_freeCCtx() to manage resource. - ZSTD_CCtx object can be re-used multiple times within successive compression operations. - - Start by initializing a context. - Use ZSTD_compressBegin(), or ZSTD_compressBegin_usingDict() for dictionary compression, - or ZSTD_compressBegin_advanced(), for finer parameter control. - It's also possible to duplicate a reference context which has already been initialized, using ZSTD_copyCCtx() - - Then, consume your input using ZSTD_compressContinue(). - There are some important considerations to keep in mind when using this advanced function : - - ZSTD_compressContinue() has no internal buffer. It uses externally provided buffers only. - - Interface is synchronous : input is consumed entirely and produces 1+ compressed blocks. - - Caller must ensure there is enough space in `dst` to store compressed data under worst case scenario. - Worst case evaluation is provided by ZSTD_compressBound(). - ZSTD_compressContinue() doesn't guarantee recover after a failed compression. - - ZSTD_compressContinue() presumes prior input ***is still accessible and unmodified*** (up to maximum distance size, see WindowLog). - It remembers all previous contiguous blocks, plus one separated memory segment (which can itself consists of multiple contiguous blocks) - - ZSTD_compressContinue() detects that prior input has been overwritten when `src` buffer overlaps. - In which case, it will "discard" the relevant memory section from its history. - - Finish a frame with ZSTD_compressEnd(), which will write the last block(s) and optional checksum. - It's possible to use srcSize==0, in which case, it will write a final empty block to end the frame. - Without last block mark, frames are considered unfinished (hence corrupted) by compliant decoders. - - `ZSTD_CCtx` object can be re-used (ZSTD_compressBegin()) to compress again. -*/ - -/*===== Buffer-less streaming compression functions =====*/ -ZSTDLIB_API size_t ZSTD_compressBegin(ZSTD_CCtx* cctx, int compressionLevel); -ZSTDLIB_API size_t ZSTD_compressBegin_usingDict(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, int compressionLevel); -ZSTDLIB_API size_t ZSTD_compressBegin_advanced(ZSTD_CCtx* cctx, const void* dict, size_t dictSize, ZSTD_parameters params, unsigned long long pledgedSrcSize); /**< pledgedSrcSize : If srcSize is not known at init time, use ZSTD_CONTENTSIZE_UNKNOWN */ -ZSTDLIB_API size_t ZSTD_compressBegin_usingCDict(ZSTD_CCtx* cctx, const ZSTD_CDict* cdict); /**< note: fails if cdict==NULL */ -ZSTDLIB_API size_t ZSTD_compressBegin_usingCDict_advanced(ZSTD_CCtx* const cctx, const ZSTD_CDict* const cdict, ZSTD_frameParameters const fParams, unsigned long long const pledgedSrcSize); /* compression parameters are already set within cdict. pledgedSrcSize must be correct. If srcSize is not known, use macro ZSTD_CONTENTSIZE_UNKNOWN */ -ZSTDLIB_API size_t ZSTD_copyCCtx(ZSTD_CCtx* cctx, const ZSTD_CCtx* preparedCCtx, unsigned long long pledgedSrcSize); /**< note: if pledgedSrcSize is not known, use ZSTD_CONTENTSIZE_UNKNOWN */ - -ZSTDLIB_API size_t ZSTD_compressContinue(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); -ZSTDLIB_API size_t ZSTD_compressEnd(ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - - -/** - Buffer-less streaming decompression (synchronous mode) - - A ZSTD_DCtx object is required to track streaming operations. - Use ZSTD_createDCtx() / ZSTD_freeDCtx() to manage it. - A ZSTD_DCtx object can be re-used multiple times. - - First typical operation is to retrieve frame parameters, using ZSTD_getFrameHeader(). - Frame header is extracted from the beginning of compressed frame, so providing only the frame's beginning is enough. - Data fragment must be large enough to ensure successful decoding. - `ZSTD_frameHeaderSize_max` bytes is guaranteed to always be large enough. - @result : 0 : successful decoding, the `ZSTD_frameHeader` structure is correctly filled. - >0 : `srcSize` is too small, please provide at least @result bytes on next attempt. - errorCode, which can be tested using ZSTD_isError(). - - It fills a ZSTD_frameHeader structure with important information to correctly decode the frame, - such as the dictionary ID, content size, or maximum back-reference distance (`windowSize`). - Note that these values could be wrong, either because of data corruption, or because a 3rd party deliberately spoofs false information. - As a consequence, check that values remain within valid application range. - For example, do not allocate memory blindly, check that `windowSize` is within expectation. - Each application can set its own limits, depending on local restrictions. - For extended interoperability, it is recommended to support `windowSize` of at least 8 MB. - - ZSTD_decompressContinue() needs previous data blocks during decompression, up to `windowSize` bytes. - ZSTD_decompressContinue() is very sensitive to contiguity, - if 2 blocks don't follow each other, make sure that either the compressor breaks contiguity at the same place, - or that previous contiguous segment is large enough to properly handle maximum back-reference distance. - There are multiple ways to guarantee this condition. - - The most memory efficient way is to use a round buffer of sufficient size. - Sufficient size is determined by invoking ZSTD_decodingBufferSize_min(), - which can @return an error code if required value is too large for current system (in 32-bits mode). - In a round buffer methodology, ZSTD_decompressContinue() decompresses each block next to previous one, - up to the moment there is not enough room left in the buffer to guarantee decoding another full block, - which maximum size is provided in `ZSTD_frameHeader` structure, field `blockSizeMax`. - At which point, decoding can resume from the beginning of the buffer. - Note that already decoded data stored in the buffer should be flushed before being overwritten. - - There are alternatives possible, for example using two or more buffers of size `windowSize` each, though they consume more memory. - - Finally, if you control the compression process, you can also ignore all buffer size rules, - as long as the encoder and decoder progress in "lock-step", - aka use exactly the same buffer sizes, break contiguity at the same place, etc. - - Once buffers are setup, start decompression, with ZSTD_decompressBegin(). - If decompression requires a dictionary, use ZSTD_decompressBegin_usingDict() or ZSTD_decompressBegin_usingDDict(). - - Then use ZSTD_nextSrcSizeToDecompress() and ZSTD_decompressContinue() alternatively. - ZSTD_nextSrcSizeToDecompress() tells how many bytes to provide as 'srcSize' to ZSTD_decompressContinue(). - ZSTD_decompressContinue() requires this _exact_ amount of bytes, or it will fail. - - @result of ZSTD_decompressContinue() is the number of bytes regenerated within 'dst' (necessarily <= dstCapacity). - It can be zero : it just means ZSTD_decompressContinue() has decoded some metadata item. - It can also be an error code, which can be tested with ZSTD_isError(). - - A frame is fully decoded when ZSTD_nextSrcSizeToDecompress() returns zero. - Context can then be reset to start a new decompression. - - Note : it's possible to know if next input to present is a header or a block, using ZSTD_nextInputType(). - This information is not required to properly decode a frame. - - == Special case : skippable frames == - - Skippable frames allow integration of user-defined data into a flow of concatenated frames. - Skippable frames will be ignored (skipped) by decompressor. - The format of skippable frames is as follows : - a) Skippable frame ID - 4 Bytes, Little endian format, any value from 0x184D2A50 to 0x184D2A5F - b) Frame Size - 4 Bytes, Little endian format, unsigned 32-bits - c) Frame Content - any content (User Data) of length equal to Frame Size - For skippable frames ZSTD_getFrameHeader() returns zfhPtr->frameType==ZSTD_skippableFrame. - For skippable frames ZSTD_decompressContinue() always returns 0 : it only skips the content. -*/ - -/*===== Buffer-less streaming decompression functions =====*/ -typedef enum { ZSTD_frame, ZSTD_skippableFrame } ZSTD_frameType_e; -typedef struct { - unsigned long long frameContentSize; /* if == ZSTD_CONTENTSIZE_UNKNOWN, it means this field is not available. 0 means "empty" */ - unsigned long long windowSize; /* can be very large, up to <= frameContentSize */ - unsigned blockSizeMax; - ZSTD_frameType_e frameType; /* if == ZSTD_skippableFrame, frameContentSize is the size of skippable content */ - unsigned headerSize; - unsigned dictID; - unsigned checksumFlag; -} ZSTD_frameHeader; - -/*! ZSTD_getFrameHeader() : - * decode Frame Header, or requires larger `srcSize`. - * @return : 0, `zfhPtr` is correctly filled, - * >0, `srcSize` is too small, value is wanted `srcSize` amount, - * or an error code, which can be tested using ZSTD_isError() */ -ZSTDLIB_API size_t ZSTD_getFrameHeader(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize); /**< doesn't consume input */ -/*! ZSTD_getFrameHeader_advanced() : - * same as ZSTD_getFrameHeader(), - * with added capability to select a format (like ZSTD_f_zstd1_magicless) */ -ZSTDLIB_API size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize, ZSTD_format_e format); -ZSTDLIB_API size_t ZSTD_decodingBufferSize_min(unsigned long long windowSize, unsigned long long frameContentSize); /**< when frame content size is not known, pass in frameContentSize == ZSTD_CONTENTSIZE_UNKNOWN */ - -ZSTDLIB_API size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx); -ZSTDLIB_API size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx* dctx, const void* dict, size_t dictSize); -ZSTDLIB_API size_t ZSTD_decompressBegin_usingDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict); - -ZSTDLIB_API size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx); -ZSTDLIB_API size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - -/* misc */ -ZSTDLIB_API void ZSTD_copyDCtx(ZSTD_DCtx* dctx, const ZSTD_DCtx* preparedDCtx); -typedef enum { ZSTDnit_frameHeader, ZSTDnit_blockHeader, ZSTDnit_block, ZSTDnit_lastBlock, ZSTDnit_checksum, ZSTDnit_skippableFrame } ZSTD_nextInputType_e; -ZSTDLIB_API ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx); - - - - -/* ============================ */ -/** Block level API */ -/* ============================ */ - -/*! - Block functions produce and decode raw zstd blocks, without frame metadata. - Frame metadata cost is typically ~12 bytes, which can be non-negligible for very small blocks (< 100 bytes). - But users will have to take in charge needed metadata to regenerate data, such as compressed and content sizes. - - A few rules to respect : - - Compressing and decompressing require a context structure - + Use ZSTD_createCCtx() and ZSTD_createDCtx() - - It is necessary to init context before starting - + compression : any ZSTD_compressBegin*() variant, including with dictionary - + decompression : any ZSTD_decompressBegin*() variant, including with dictionary - + copyCCtx() and copyDCtx() can be used too - - Block size is limited, it must be <= ZSTD_getBlockSize() <= ZSTD_BLOCKSIZE_MAX == 128 KB - + If input is larger than a block size, it's necessary to split input data into multiple blocks - + For inputs larger than a single block, consider using regular ZSTD_compress() instead. - Frame metadata is not that costly, and quickly becomes negligible as source size grows larger than a block. - - When a block is considered not compressible enough, ZSTD_compressBlock() result will be 0 (zero) ! - ===> In which case, nothing is produced into `dst` ! - + User __must__ test for such outcome and deal directly with uncompressed data - + A block cannot be declared incompressible if ZSTD_compressBlock() return value was != 0. - Doing so would mess up with statistics history, leading to potential data corruption. - + ZSTD_decompressBlock() _doesn't accept uncompressed data as input_ !! - + In case of multiple successive blocks, should some of them be uncompressed, - decoder must be informed of their existence in order to follow proper history. - Use ZSTD_insertBlock() for such a case. -*/ - -/*===== Raw zstd block functions =====*/ -ZSTDLIB_API size_t ZSTD_getBlockSize (const ZSTD_CCtx* cctx); -ZSTDLIB_API size_t ZSTD_compressBlock (ZSTD_CCtx* cctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); -ZSTDLIB_API size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); -ZSTDLIB_API size_t ZSTD_insertBlock (ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize); /**< insert uncompressed block into `dctx` history. Useful for multi-blocks decompression. */ - - -#endif /* ZSTD_H_ZSTD_STATIC_LINKING_ONLY */ - -#if defined (__cplusplus) -} -#endif -/**** ended inlining ../zstd.h ****/ -#define FSE_STATIC_LINKING_ONLY -/**** skipping file: fse.h ****/ -#define HUF_STATIC_LINKING_ONLY -/**** skipping file: huf.h ****/ -#ifndef XXH_STATIC_LINKING_ONLY -# define XXH_STATIC_LINKING_ONLY /* XXH64_state_t */ -#endif -/**** start inlining xxhash.h ****/ -/* - * xxHash - Extremely Fast Hash algorithm - * Header File - * Copyright (c) 2012-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - xxHash source repository : https://github.com/Cyan4973/xxHash - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -*/ - -/* Notice extracted from xxHash homepage : - -xxHash is an extremely fast Hash algorithm, running at RAM speed limits. -It also successfully passes all tests from the SMHasher suite. - -Comparison (single thread, Windows Seven 32 bits, using SMHasher on a Core 2 Duo @3GHz) - -Name Speed Q.Score Author -xxHash 5.4 GB/s 10 -CrapWow 3.2 GB/s 2 Andrew -MumurHash 3a 2.7 GB/s 10 Austin Appleby -SpookyHash 2.0 GB/s 10 Bob Jenkins -SBox 1.4 GB/s 9 Bret Mulvey -Lookup3 1.2 GB/s 9 Bob Jenkins -SuperFastHash 1.2 GB/s 1 Paul Hsieh -CityHash64 1.05 GB/s 10 Pike & Alakuijala -FNV 0.55 GB/s 5 Fowler, Noll, Vo -CRC32 0.43 GB/s 9 -MD5-32 0.33 GB/s 10 Ronald L. Rivest -SHA1-32 0.28 GB/s 10 - -Q.Score is a measure of quality of the hash function. -It depends on successfully passing SMHasher test set. -10 is a perfect score. - -A 64-bits version, named XXH64, is available since r35. -It offers much better speed, but for 64-bits applications only. -Name Speed on 64 bits Speed on 32 bits -XXH64 13.8 GB/s 1.9 GB/s -XXH32 6.8 GB/s 6.0 GB/s -*/ - -#if defined (__cplusplus) -extern "C" { -#endif - -#ifndef XXHASH_H_5627135585666179 -#define XXHASH_H_5627135585666179 1 - - -/* **************************** -* Definitions -******************************/ -/**** skipping file: zstd_deps.h ****/ -typedef enum { XXH_OK=0, XXH_ERROR } XXH_errorcode; - - -/* **************************** -* API modifier -******************************/ -/** XXH_PRIVATE_API -* This is useful if you want to include xxhash functions in `static` mode -* in order to inline them, and remove their symbol from the public list. -* Methodology : -* #define XXH_PRIVATE_API -* #include "xxhash.h" -* `xxhash.c` is automatically included. -* It's not useful to compile and link it as a separate module anymore. -*/ -#ifdef XXH_PRIVATE_API -# ifndef XXH_STATIC_LINKING_ONLY -# define XXH_STATIC_LINKING_ONLY -# endif -# if defined(__GNUC__) -# define XXH_PUBLIC_API static __inline __attribute__((unused)) -# elif defined (__cplusplus) || (defined (__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) /* C99 */) -# define XXH_PUBLIC_API static inline -# elif defined(_MSC_VER) -# define XXH_PUBLIC_API static __inline -# else -# define XXH_PUBLIC_API static /* this version may generate warnings for unused static functions; disable the relevant warning */ -# endif -#else -# define XXH_PUBLIC_API /* do nothing */ -#endif /* XXH_PRIVATE_API */ - -/*!XXH_NAMESPACE, aka Namespace Emulation : - -If you want to include _and expose_ xxHash functions from within your own library, -but also want to avoid symbol collisions with another library which also includes xxHash, - -you can use XXH_NAMESPACE, to automatically prefix any public symbol from xxhash library -with the value of XXH_NAMESPACE (so avoid to keep it NULL and avoid numeric values). - -Note that no change is required within the calling program as long as it includes `xxhash.h` : -regular symbol name will be automatically translated by this header. -*/ -#ifdef XXH_NAMESPACE -# define XXH_CAT(A,B) A##B -# define XXH_NAME2(A,B) XXH_CAT(A,B) -# define XXH32 XXH_NAME2(XXH_NAMESPACE, XXH32) -# define XXH64 XXH_NAME2(XXH_NAMESPACE, XXH64) -# define XXH_versionNumber XXH_NAME2(XXH_NAMESPACE, XXH_versionNumber) -# define XXH32_createState XXH_NAME2(XXH_NAMESPACE, XXH32_createState) -# define XXH64_createState XXH_NAME2(XXH_NAMESPACE, XXH64_createState) -# define XXH32_freeState XXH_NAME2(XXH_NAMESPACE, XXH32_freeState) -# define XXH64_freeState XXH_NAME2(XXH_NAMESPACE, XXH64_freeState) -# define XXH32_reset XXH_NAME2(XXH_NAMESPACE, XXH32_reset) -# define XXH64_reset XXH_NAME2(XXH_NAMESPACE, XXH64_reset) -# define XXH32_update XXH_NAME2(XXH_NAMESPACE, XXH32_update) -# define XXH64_update XXH_NAME2(XXH_NAMESPACE, XXH64_update) -# define XXH32_digest XXH_NAME2(XXH_NAMESPACE, XXH32_digest) -# define XXH64_digest XXH_NAME2(XXH_NAMESPACE, XXH64_digest) -# define XXH32_copyState XXH_NAME2(XXH_NAMESPACE, XXH32_copyState) -# define XXH64_copyState XXH_NAME2(XXH_NAMESPACE, XXH64_copyState) -# define XXH32_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH32_canonicalFromHash) -# define XXH64_canonicalFromHash XXH_NAME2(XXH_NAMESPACE, XXH64_canonicalFromHash) -# define XXH32_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH32_hashFromCanonical) -# define XXH64_hashFromCanonical XXH_NAME2(XXH_NAMESPACE, XXH64_hashFromCanonical) -#endif - - -/* ************************************* -* Version -***************************************/ -#define XXH_VERSION_MAJOR 0 -#define XXH_VERSION_MINOR 6 -#define XXH_VERSION_RELEASE 2 -#define XXH_VERSION_NUMBER (XXH_VERSION_MAJOR *100*100 + XXH_VERSION_MINOR *100 + XXH_VERSION_RELEASE) -XXH_PUBLIC_API unsigned XXH_versionNumber (void); - - -/* **************************** -* Simple Hash Functions -******************************/ -typedef unsigned int XXH32_hash_t; -typedef unsigned long long XXH64_hash_t; - -XXH_PUBLIC_API XXH32_hash_t XXH32 (const void* input, size_t length, unsigned int seed); -XXH_PUBLIC_API XXH64_hash_t XXH64 (const void* input, size_t length, unsigned long long seed); - -/*! -XXH32() : - Calculate the 32-bits hash of sequence "length" bytes stored at memory address "input". - The memory between input & input+length must be valid (allocated and read-accessible). - "seed" can be used to alter the result predictably. - Speed on Core 2 Duo @ 3 GHz (single thread, SMHasher benchmark) : 5.4 GB/s -XXH64() : - Calculate the 64-bits hash of sequence of length "len" stored at memory address "input". - "seed" can be used to alter the result predictably. - This function runs 2x faster on 64-bits systems, but slower on 32-bits systems (see benchmark). -*/ - - -/* **************************** -* Streaming Hash Functions -******************************/ -typedef struct XXH32_state_s XXH32_state_t; /* incomplete type */ -typedef struct XXH64_state_s XXH64_state_t; /* incomplete type */ - -/*! State allocation, compatible with dynamic libraries */ - -XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void); -XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr); - -XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void); -XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr); - - -/* hash streaming */ - -XXH_PUBLIC_API XXH_errorcode XXH32_reset (XXH32_state_t* statePtr, unsigned int seed); -XXH_PUBLIC_API XXH_errorcode XXH32_update (XXH32_state_t* statePtr, const void* input, size_t length); -XXH_PUBLIC_API XXH32_hash_t XXH32_digest (const XXH32_state_t* statePtr); - -XXH_PUBLIC_API XXH_errorcode XXH64_reset (XXH64_state_t* statePtr, unsigned long long seed); -XXH_PUBLIC_API XXH_errorcode XXH64_update (XXH64_state_t* statePtr, const void* input, size_t length); -XXH_PUBLIC_API XXH64_hash_t XXH64_digest (const XXH64_state_t* statePtr); - -/* -These functions generate the xxHash of an input provided in multiple segments. -Note that, for small input, they are slower than single-call functions, due to state management. -For small input, prefer `XXH32()` and `XXH64()` . - -XXH state must first be allocated, using XXH*_createState() . - -Start a new hash by initializing state with a seed, using XXH*_reset(). - -Then, feed the hash state by calling XXH*_update() as many times as necessary. -Obviously, input must be allocated and read accessible. -The function returns an error code, with 0 meaning OK, and any other value meaning there is an error. - -Finally, a hash value can be produced anytime, by using XXH*_digest(). -This function returns the nn-bits hash as an int or long long. - -It's still possible to continue inserting input into the hash state after a digest, -and generate some new hashes later on, by calling again XXH*_digest(). - -When done, free XXH state space if it was allocated dynamically. -*/ - - -/* ************************** -* Utils -****************************/ -#if !(defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)) /* ! C99 */ -# define restrict /* disable restrict */ -#endif - -XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* restrict dst_state, const XXH32_state_t* restrict src_state); -XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* restrict dst_state, const XXH64_state_t* restrict src_state); - - -/* ************************** -* Canonical representation -****************************/ -/* Default result type for XXH functions are primitive unsigned 32 and 64 bits. -* The canonical representation uses human-readable write convention, aka big-endian (large digits first). -* These functions allow transformation of hash result into and from its canonical format. -* This way, hash values can be written into a file / memory, and remain comparable on different systems and programs. -*/ -typedef struct { unsigned char digest[4]; } XXH32_canonical_t; -typedef struct { unsigned char digest[8]; } XXH64_canonical_t; - -XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash); -XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash); - -XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src); -XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src); - -#endif /* XXHASH_H_5627135585666179 */ - - - -/* ================================================================================================ - This section contains definitions which are not guaranteed to remain stable. - They may change in future versions, becoming incompatible with a different version of the library. - They shall only be used with static linking. - Never use these definitions in association with dynamic linking ! -=================================================================================================== */ -#if defined(XXH_STATIC_LINKING_ONLY) && !defined(XXH_STATIC_H_3543687687345) -#define XXH_STATIC_H_3543687687345 - -/* These definitions are only meant to allow allocation of XXH state - statically, on stack, or in a struct for example. - Do not use members directly. */ - - struct XXH32_state_s { - unsigned total_len_32; - unsigned large_len; - unsigned v1; - unsigned v2; - unsigned v3; - unsigned v4; - unsigned mem32[4]; /* buffer defined as U32 for alignment */ - unsigned memsize; - unsigned reserved; /* never read nor write, will be removed in a future version */ - }; /* typedef'd to XXH32_state_t */ - - struct XXH64_state_s { - unsigned long long total_len; - unsigned long long v1; - unsigned long long v2; - unsigned long long v3; - unsigned long long v4; - unsigned long long mem64[4]; /* buffer defined as U64 for alignment */ - unsigned memsize; - unsigned reserved[2]; /* never read nor write, will be removed in a future version */ - }; /* typedef'd to XXH64_state_t */ - - -# ifdef XXH_PRIVATE_API -/**** start inlining xxhash.c ****/ -/* - * xxHash - Fast Hash algorithm - * Copyright (c) 2012-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - xxHash homepage: http://www.xxhash.com - * - xxHash source repository : https://github.com/Cyan4973/xxHash - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -*/ - - -/* ************************************* -* Tuning parameters -***************************************/ -/*!XXH_FORCE_MEMORY_ACCESS : - * By default, access to unaligned memory is controlled by `memcpy()`, which is safe and portable. - * Unfortunately, on some target/compiler combinations, the generated assembly is sub-optimal. - * The below switch allow to select different access method for improved performance. - * Method 0 (default) : use `memcpy()`. Safe and portable. - * Method 1 : `__packed` statement. It depends on compiler extension (ie, not portable). - * This method is safe if your compiler supports it, and *generally* as fast or faster than `memcpy`. - * Method 2 : direct access. This method doesn't depend on compiler but violate C standard. - * It can generate buggy code on targets which do not support unaligned memory accesses. - * But in some circumstances, it's the only known way to get the most performance (ie GCC + ARMv6) - * See http://stackoverflow.com/a/32095106/646947 for details. - * Prefer these methods in priority order (0 > 1 > 2) - */ -#ifndef XXH_FORCE_MEMORY_ACCESS /* can be defined externally, on command line for example */ -# if defined(__GNUC__) && ( defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__) || defined(__ARM_ARCH_6T2__) ) -# define XXH_FORCE_MEMORY_ACCESS 2 -# elif (defined(__INTEL_COMPILER) && !defined(WIN32)) || \ - (defined(__GNUC__) && ( defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) )) || \ - defined(__ICCARM__) -# define XXH_FORCE_MEMORY_ACCESS 1 -# endif -#endif - -/*!XXH_ACCEPT_NULL_INPUT_POINTER : - * If the input pointer is a null pointer, xxHash default behavior is to trigger a memory access error, since it is a bad pointer. - * When this option is enabled, xxHash output for null input pointers will be the same as a null-length input. - * By default, this option is disabled. To enable it, uncomment below define : - */ -/* #define XXH_ACCEPT_NULL_INPUT_POINTER 1 */ - -/*!XXH_FORCE_NATIVE_FORMAT : - * By default, xxHash library provides endian-independent Hash values, based on little-endian convention. - * Results are therefore identical for little-endian and big-endian CPU. - * This comes at a performance cost for big-endian CPU, since some swapping is required to emulate little-endian format. - * Should endian-independence be of no importance for your application, you may set the #define below to 1, - * to improve speed for Big-endian CPU. - * This option has no impact on Little_Endian CPU. - */ -#ifndef XXH_FORCE_NATIVE_FORMAT /* can be defined externally */ -# define XXH_FORCE_NATIVE_FORMAT 0 -#endif - -/*!XXH_FORCE_ALIGN_CHECK : - * This is a minor performance trick, only useful with lots of very small keys. - * It means : check for aligned/unaligned input. - * The check costs one initial branch per hash; set to 0 when the input data - * is guaranteed to be aligned. - */ -#ifndef XXH_FORCE_ALIGN_CHECK /* can be defined externally */ -# if defined(__i386) || defined(_M_IX86) || defined(__x86_64__) || defined(_M_X64) -# define XXH_FORCE_ALIGN_CHECK 0 -# else -# define XXH_FORCE_ALIGN_CHECK 1 -# endif -#endif - - -/* ************************************* -* Includes & Memory related functions -***************************************/ -/* Modify the local functions below should you wish to use some other memory routines */ -/* for ZSTD_malloc(), ZSTD_free() */ -#define ZSTD_DEPS_NEED_MALLOC -/**** skipping file: zstd_deps.h ****/ -static void* XXH_malloc(size_t s) { return ZSTD_malloc(s); } -static void XXH_free (void* p) { ZSTD_free(p); } -static void* XXH_memcpy(void* dest, const void* src, size_t size) { return ZSTD_memcpy(dest,src,size); } - -#ifndef XXH_STATIC_LINKING_ONLY -# define XXH_STATIC_LINKING_ONLY -#endif -/**** skipping file: xxhash.h ****/ - - -/* ************************************* -* Compiler Specific Options -***************************************/ -/**** skipping file: compiler.h ****/ - - -/* ************************************* -* Basic Types -***************************************/ -/**** skipping file: mem.h ****/ - -#if (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==2)) - -/* Force direct memory access. Only works on CPU which support unaligned memory access in hardware */ -static U32 XXH_read32(const void* memPtr) { return *(const U32*) memPtr; } -static U64 XXH_read64(const void* memPtr) { return *(const U64*) memPtr; } - -#elif (defined(XXH_FORCE_MEMORY_ACCESS) && (XXH_FORCE_MEMORY_ACCESS==1)) - -/* __pack instructions are safer, but compiler specific, hence potentially problematic for some compilers */ -/* currently only defined for gcc and icc */ -typedef union { U32 u32; U64 u64; } __attribute__((packed)) unalign; - -static U32 XXH_read32(const void* ptr) { return ((const unalign*)ptr)->u32; } -static U64 XXH_read64(const void* ptr) { return ((const unalign*)ptr)->u64; } - -#else - -/* portable and safe solution. Generally efficient. - * see : http://stackoverflow.com/a/32095106/646947 - */ - -static U32 XXH_read32(const void* memPtr) -{ - U32 val; - ZSTD_memcpy(&val, memPtr, sizeof(val)); - return val; -} - -static U64 XXH_read64(const void* memPtr) -{ - U64 val; - ZSTD_memcpy(&val, memPtr, sizeof(val)); - return val; -} - -#endif /* XXH_FORCE_DIRECT_MEMORY_ACCESS */ - - -/* **************************************** -* Compiler-specific Functions and Macros -******************************************/ -#define GCC_VERSION (__GNUC__ * 100 + __GNUC_MINOR__) - -/* Note : although _rotl exists for minGW (GCC under windows), performance seems poor */ -#if defined(_MSC_VER) -# define XXH_rotl32(x,r) _rotl(x,r) -# define XXH_rotl64(x,r) _rotl64(x,r) -#else -#if defined(__ICCARM__) -# include -# define XXH_rotl32(x,r) __ROR(x,(32 - r)) -#else -# define XXH_rotl32(x,r) ((x << r) | (x >> (32 - r))) -#endif -# define XXH_rotl64(x,r) ((x << r) | (x >> (64 - r))) -#endif - -#if defined(_MSC_VER) /* Visual Studio */ -# define XXH_swap32 _byteswap_ulong -# define XXH_swap64 _byteswap_uint64 -#elif GCC_VERSION >= 403 -# define XXH_swap32 __builtin_bswap32 -# define XXH_swap64 __builtin_bswap64 -#else -static U32 XXH_swap32 (U32 x) -{ - return ((x << 24) & 0xff000000 ) | - ((x << 8) & 0x00ff0000 ) | - ((x >> 8) & 0x0000ff00 ) | - ((x >> 24) & 0x000000ff ); -} -static U64 XXH_swap64 (U64 x) -{ - return ((x << 56) & 0xff00000000000000ULL) | - ((x << 40) & 0x00ff000000000000ULL) | - ((x << 24) & 0x0000ff0000000000ULL) | - ((x << 8) & 0x000000ff00000000ULL) | - ((x >> 8) & 0x00000000ff000000ULL) | - ((x >> 24) & 0x0000000000ff0000ULL) | - ((x >> 40) & 0x000000000000ff00ULL) | - ((x >> 56) & 0x00000000000000ffULL); -} -#endif - - -/* ************************************* -* Architecture Macros -***************************************/ -typedef enum { XXH_bigEndian=0, XXH_littleEndian=1 } XXH_endianess; - -/* XXH_CPU_LITTLE_ENDIAN can be defined externally, for example on the compiler command line */ -#ifndef XXH_CPU_LITTLE_ENDIAN - static const int g_one = 1; -# define XXH_CPU_LITTLE_ENDIAN (*(const char*)(&g_one)) -#endif - - -/* *************************** -* Memory reads -*****************************/ -typedef enum { XXH_aligned, XXH_unaligned } XXH_alignment; - -FORCE_INLINE_TEMPLATE U32 XXH_readLE32_align(const void* ptr, XXH_endianess endian, XXH_alignment align) -{ - if (align==XXH_unaligned) - return endian==XXH_littleEndian ? XXH_read32(ptr) : XXH_swap32(XXH_read32(ptr)); - else - return endian==XXH_littleEndian ? *(const U32*)ptr : XXH_swap32(*(const U32*)ptr); -} - -FORCE_INLINE_TEMPLATE U32 XXH_readLE32(const void* ptr, XXH_endianess endian) -{ - return XXH_readLE32_align(ptr, endian, XXH_unaligned); -} - -static U32 XXH_readBE32(const void* ptr) -{ - return XXH_CPU_LITTLE_ENDIAN ? XXH_swap32(XXH_read32(ptr)) : XXH_read32(ptr); -} - -FORCE_INLINE_TEMPLATE U64 XXH_readLE64_align(const void* ptr, XXH_endianess endian, XXH_alignment align) -{ - if (align==XXH_unaligned) - return endian==XXH_littleEndian ? XXH_read64(ptr) : XXH_swap64(XXH_read64(ptr)); - else - return endian==XXH_littleEndian ? *(const U64*)ptr : XXH_swap64(*(const U64*)ptr); -} - -FORCE_INLINE_TEMPLATE U64 XXH_readLE64(const void* ptr, XXH_endianess endian) -{ - return XXH_readLE64_align(ptr, endian, XXH_unaligned); -} - -static U64 XXH_readBE64(const void* ptr) -{ - return XXH_CPU_LITTLE_ENDIAN ? XXH_swap64(XXH_read64(ptr)) : XXH_read64(ptr); -} - - -/* ************************************* -* Macros -***************************************/ -#define XXH_STATIC_ASSERT(c) { enum { XXH_static_assert = 1/(int)(!!(c)) }; } /* use only *after* variable declarations */ - - -/* ************************************* -* Constants -***************************************/ -static const U32 PRIME32_1 = 2654435761U; -static const U32 PRIME32_2 = 2246822519U; -static const U32 PRIME32_3 = 3266489917U; -static const U32 PRIME32_4 = 668265263U; -static const U32 PRIME32_5 = 374761393U; - -static const U64 PRIME64_1 = 11400714785074694791ULL; -static const U64 PRIME64_2 = 14029467366897019727ULL; -static const U64 PRIME64_3 = 1609587929392839161ULL; -static const U64 PRIME64_4 = 9650029242287828579ULL; -static const U64 PRIME64_5 = 2870177450012600261ULL; - -XXH_PUBLIC_API unsigned XXH_versionNumber (void) { return XXH_VERSION_NUMBER; } - - -/* ************************** -* Utils -****************************/ -XXH_PUBLIC_API void XXH32_copyState(XXH32_state_t* restrict dstState, const XXH32_state_t* restrict srcState) -{ - ZSTD_memcpy(dstState, srcState, sizeof(*dstState)); -} - -XXH_PUBLIC_API void XXH64_copyState(XXH64_state_t* restrict dstState, const XXH64_state_t* restrict srcState) -{ - ZSTD_memcpy(dstState, srcState, sizeof(*dstState)); -} - - -/* *************************** -* Simple Hash Functions -*****************************/ - -static U32 XXH32_round(U32 seed, U32 input) -{ - seed += input * PRIME32_2; - seed = XXH_rotl32(seed, 13); - seed *= PRIME32_1; - return seed; -} - -FORCE_INLINE_TEMPLATE U32 XXH32_endian_align(const void* input, size_t len, U32 seed, XXH_endianess endian, XXH_alignment align) -{ - const BYTE* p = (const BYTE*)input; - const BYTE* bEnd = p + len; - U32 h32; -#define XXH_get32bits(p) XXH_readLE32_align(p, endian, align) - -#ifdef XXH_ACCEPT_NULL_INPUT_POINTER - if (p==NULL) { - len=0; - bEnd=p=(const BYTE*)(size_t)16; - } -#endif - - if (len>=16) { - const BYTE* const limit = bEnd - 16; - U32 v1 = seed + PRIME32_1 + PRIME32_2; - U32 v2 = seed + PRIME32_2; - U32 v3 = seed + 0; - U32 v4 = seed - PRIME32_1; - - do { - v1 = XXH32_round(v1, XXH_get32bits(p)); p+=4; - v2 = XXH32_round(v2, XXH_get32bits(p)); p+=4; - v3 = XXH32_round(v3, XXH_get32bits(p)); p+=4; - v4 = XXH32_round(v4, XXH_get32bits(p)); p+=4; - } while (p<=limit); - - h32 = XXH_rotl32(v1, 1) + XXH_rotl32(v2, 7) + XXH_rotl32(v3, 12) + XXH_rotl32(v4, 18); - } else { - h32 = seed + PRIME32_5; - } - - h32 += (U32) len; - - while (p+4<=bEnd) { - h32 += XXH_get32bits(p) * PRIME32_3; - h32 = XXH_rotl32(h32, 17) * PRIME32_4 ; - p+=4; - } - - while (p> 15; - h32 *= PRIME32_2; - h32 ^= h32 >> 13; - h32 *= PRIME32_3; - h32 ^= h32 >> 16; - - return h32; -} - - -XXH_PUBLIC_API unsigned int XXH32 (const void* input, size_t len, unsigned int seed) -{ -#if 0 - /* Simple version, good for code maintenance, but unfortunately slow for small inputs */ - XXH32_CREATESTATE_STATIC(state); - XXH32_reset(state, seed); - XXH32_update(state, input, len); - return XXH32_digest(state); -#else - XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN; - - if (XXH_FORCE_ALIGN_CHECK) { - if ((((size_t)input) & 3) == 0) { /* Input is 4-bytes aligned, leverage the speed benefit */ - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH32_endian_align(input, len, seed, XXH_littleEndian, XXH_aligned); - else - return XXH32_endian_align(input, len, seed, XXH_bigEndian, XXH_aligned); - } } - - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH32_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned); - else - return XXH32_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned); -#endif -} - - -static U64 XXH64_round(U64 acc, U64 input) -{ - acc += input * PRIME64_2; - acc = XXH_rotl64(acc, 31); - acc *= PRIME64_1; - return acc; -} - -static U64 XXH64_mergeRound(U64 acc, U64 val) -{ - val = XXH64_round(0, val); - acc ^= val; - acc = acc * PRIME64_1 + PRIME64_4; - return acc; -} - -FORCE_INLINE_TEMPLATE U64 XXH64_endian_align(const void* input, size_t len, U64 seed, XXH_endianess endian, XXH_alignment align) -{ - const BYTE* p = (const BYTE*)input; - const BYTE* const bEnd = p + len; - U64 h64; -#define XXH_get64bits(p) XXH_readLE64_align(p, endian, align) - -#ifdef XXH_ACCEPT_NULL_INPUT_POINTER - if (p==NULL) { - len=0; - bEnd=p=(const BYTE*)(size_t)32; - } -#endif - - if (len>=32) { - const BYTE* const limit = bEnd - 32; - U64 v1 = seed + PRIME64_1 + PRIME64_2; - U64 v2 = seed + PRIME64_2; - U64 v3 = seed + 0; - U64 v4 = seed - PRIME64_1; - - do { - v1 = XXH64_round(v1, XXH_get64bits(p)); p+=8; - v2 = XXH64_round(v2, XXH_get64bits(p)); p+=8; - v3 = XXH64_round(v3, XXH_get64bits(p)); p+=8; - v4 = XXH64_round(v4, XXH_get64bits(p)); p+=8; - } while (p<=limit); - - h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18); - h64 = XXH64_mergeRound(h64, v1); - h64 = XXH64_mergeRound(h64, v2); - h64 = XXH64_mergeRound(h64, v3); - h64 = XXH64_mergeRound(h64, v4); - - } else { - h64 = seed + PRIME64_5; - } - - h64 += (U64) len; - - while (p+8<=bEnd) { - U64 const k1 = XXH64_round(0, XXH_get64bits(p)); - h64 ^= k1; - h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4; - p+=8; - } - - if (p+4<=bEnd) { - h64 ^= (U64)(XXH_get32bits(p)) * PRIME64_1; - h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3; - p+=4; - } - - while (p> 33; - h64 *= PRIME64_2; - h64 ^= h64 >> 29; - h64 *= PRIME64_3; - h64 ^= h64 >> 32; - - return h64; -} - - -XXH_PUBLIC_API unsigned long long XXH64 (const void* input, size_t len, unsigned long long seed) -{ -#if 0 - /* Simple version, good for code maintenance, but unfortunately slow for small inputs */ - XXH64_CREATESTATE_STATIC(state); - XXH64_reset(state, seed); - XXH64_update(state, input, len); - return XXH64_digest(state); -#else - XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN; - - if (XXH_FORCE_ALIGN_CHECK) { - if ((((size_t)input) & 7)==0) { /* Input is aligned, let's leverage the speed advantage */ - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_aligned); - else - return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_aligned); - } } - - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH64_endian_align(input, len, seed, XXH_littleEndian, XXH_unaligned); - else - return XXH64_endian_align(input, len, seed, XXH_bigEndian, XXH_unaligned); -#endif -} - - -/* ************************************************** -* Advanced Hash Functions -****************************************************/ - -XXH_PUBLIC_API XXH32_state_t* XXH32_createState(void) -{ - return (XXH32_state_t*)XXH_malloc(sizeof(XXH32_state_t)); -} -XXH_PUBLIC_API XXH_errorcode XXH32_freeState(XXH32_state_t* statePtr) -{ - XXH_free(statePtr); - return XXH_OK; -} - -XXH_PUBLIC_API XXH64_state_t* XXH64_createState(void) -{ - return (XXH64_state_t*)XXH_malloc(sizeof(XXH64_state_t)); -} -XXH_PUBLIC_API XXH_errorcode XXH64_freeState(XXH64_state_t* statePtr) -{ - XXH_free(statePtr); - return XXH_OK; -} - - -/*** Hash feed ***/ - -XXH_PUBLIC_API XXH_errorcode XXH32_reset(XXH32_state_t* statePtr, unsigned int seed) -{ - XXH32_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */ - ZSTD_memset(&state, 0, sizeof(state)-4); /* do not write into reserved, for future removal */ - state.v1 = seed + PRIME32_1 + PRIME32_2; - state.v2 = seed + PRIME32_2; - state.v3 = seed + 0; - state.v4 = seed - PRIME32_1; - ZSTD_memcpy(statePtr, &state, sizeof(state)); - return XXH_OK; -} - - -XXH_PUBLIC_API XXH_errorcode XXH64_reset(XXH64_state_t* statePtr, unsigned long long seed) -{ - XXH64_state_t state; /* using a local state to memcpy() in order to avoid strict-aliasing warnings */ - ZSTD_memset(&state, 0, sizeof(state)-8); /* do not write into reserved, for future removal */ - state.v1 = seed + PRIME64_1 + PRIME64_2; - state.v2 = seed + PRIME64_2; - state.v3 = seed + 0; - state.v4 = seed - PRIME64_1; - ZSTD_memcpy(statePtr, &state, sizeof(state)); - return XXH_OK; -} - - -FORCE_INLINE_TEMPLATE XXH_errorcode XXH32_update_endian (XXH32_state_t* state, const void* input, size_t len, XXH_endianess endian) -{ - const BYTE* p = (const BYTE*)input; - const BYTE* const bEnd = p + len; - -#ifdef XXH_ACCEPT_NULL_INPUT_POINTER - if (input==NULL) return XXH_ERROR; -#endif - - state->total_len_32 += (unsigned)len; - state->large_len |= (len>=16) | (state->total_len_32>=16); - - if (state->memsize + len < 16) { /* fill in tmp buffer */ - XXH_memcpy((BYTE*)(state->mem32) + state->memsize, input, len); - state->memsize += (unsigned)len; - return XXH_OK; - } - - if (state->memsize) { /* some data left from previous update */ - XXH_memcpy((BYTE*)(state->mem32) + state->memsize, input, 16-state->memsize); - { const U32* p32 = state->mem32; - state->v1 = XXH32_round(state->v1, XXH_readLE32(p32, endian)); p32++; - state->v2 = XXH32_round(state->v2, XXH_readLE32(p32, endian)); p32++; - state->v3 = XXH32_round(state->v3, XXH_readLE32(p32, endian)); p32++; - state->v4 = XXH32_round(state->v4, XXH_readLE32(p32, endian)); p32++; - } - p += 16-state->memsize; - state->memsize = 0; - } - - if (p <= bEnd-16) { - const BYTE* const limit = bEnd - 16; - U32 v1 = state->v1; - U32 v2 = state->v2; - U32 v3 = state->v3; - U32 v4 = state->v4; - - do { - v1 = XXH32_round(v1, XXH_readLE32(p, endian)); p+=4; - v2 = XXH32_round(v2, XXH_readLE32(p, endian)); p+=4; - v3 = XXH32_round(v3, XXH_readLE32(p, endian)); p+=4; - v4 = XXH32_round(v4, XXH_readLE32(p, endian)); p+=4; - } while (p<=limit); - - state->v1 = v1; - state->v2 = v2; - state->v3 = v3; - state->v4 = v4; - } - - if (p < bEnd) { - XXH_memcpy(state->mem32, p, (size_t)(bEnd-p)); - state->memsize = (unsigned)(bEnd-p); - } - - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode XXH32_update (XXH32_state_t* state_in, const void* input, size_t len) -{ - XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN; - - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH32_update_endian(state_in, input, len, XXH_littleEndian); - else - return XXH32_update_endian(state_in, input, len, XXH_bigEndian); -} - - - -FORCE_INLINE_TEMPLATE U32 XXH32_digest_endian (const XXH32_state_t* state, XXH_endianess endian) -{ - const BYTE * p = (const BYTE*)state->mem32; - const BYTE* const bEnd = (const BYTE*)(state->mem32) + state->memsize; - U32 h32; - - if (state->large_len) { - h32 = XXH_rotl32(state->v1, 1) + XXH_rotl32(state->v2, 7) + XXH_rotl32(state->v3, 12) + XXH_rotl32(state->v4, 18); - } else { - h32 = state->v3 /* == seed */ + PRIME32_5; - } - - h32 += state->total_len_32; - - while (p+4<=bEnd) { - h32 += XXH_readLE32(p, endian) * PRIME32_3; - h32 = XXH_rotl32(h32, 17) * PRIME32_4; - p+=4; - } - - while (p> 15; - h32 *= PRIME32_2; - h32 ^= h32 >> 13; - h32 *= PRIME32_3; - h32 ^= h32 >> 16; - - return h32; -} - - -XXH_PUBLIC_API unsigned int XXH32_digest (const XXH32_state_t* state_in) -{ - XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN; - - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH32_digest_endian(state_in, XXH_littleEndian); - else - return XXH32_digest_endian(state_in, XXH_bigEndian); -} - - - -/* **** XXH64 **** */ - -FORCE_INLINE_TEMPLATE XXH_errorcode XXH64_update_endian (XXH64_state_t* state, const void* input, size_t len, XXH_endianess endian) -{ - const BYTE* p = (const BYTE*)input; - const BYTE* const bEnd = p + len; - -#ifdef XXH_ACCEPT_NULL_INPUT_POINTER - if (input==NULL) return XXH_ERROR; -#endif - - state->total_len += len; - - if (state->memsize + len < 32) { /* fill in tmp buffer */ - if (input != NULL) { - XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, len); - } - state->memsize += (U32)len; - return XXH_OK; - } - - if (state->memsize) { /* tmp buffer is full */ - XXH_memcpy(((BYTE*)state->mem64) + state->memsize, input, 32-state->memsize); - state->v1 = XXH64_round(state->v1, XXH_readLE64(state->mem64+0, endian)); - state->v2 = XXH64_round(state->v2, XXH_readLE64(state->mem64+1, endian)); - state->v3 = XXH64_round(state->v3, XXH_readLE64(state->mem64+2, endian)); - state->v4 = XXH64_round(state->v4, XXH_readLE64(state->mem64+3, endian)); - p += 32-state->memsize; - state->memsize = 0; - } - - if (p+32 <= bEnd) { - const BYTE* const limit = bEnd - 32; - U64 v1 = state->v1; - U64 v2 = state->v2; - U64 v3 = state->v3; - U64 v4 = state->v4; - - do { - v1 = XXH64_round(v1, XXH_readLE64(p, endian)); p+=8; - v2 = XXH64_round(v2, XXH_readLE64(p, endian)); p+=8; - v3 = XXH64_round(v3, XXH_readLE64(p, endian)); p+=8; - v4 = XXH64_round(v4, XXH_readLE64(p, endian)); p+=8; - } while (p<=limit); - - state->v1 = v1; - state->v2 = v2; - state->v3 = v3; - state->v4 = v4; - } - - if (p < bEnd) { - XXH_memcpy(state->mem64, p, (size_t)(bEnd-p)); - state->memsize = (unsigned)(bEnd-p); - } - - return XXH_OK; -} - -XXH_PUBLIC_API XXH_errorcode XXH64_update (XXH64_state_t* state_in, const void* input, size_t len) -{ - XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN; - - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH64_update_endian(state_in, input, len, XXH_littleEndian); - else - return XXH64_update_endian(state_in, input, len, XXH_bigEndian); -} - - - -FORCE_INLINE_TEMPLATE U64 XXH64_digest_endian (const XXH64_state_t* state, XXH_endianess endian) -{ - const BYTE * p = (const BYTE*)state->mem64; - const BYTE* const bEnd = (const BYTE*)state->mem64 + state->memsize; - U64 h64; - - if (state->total_len >= 32) { - U64 const v1 = state->v1; - U64 const v2 = state->v2; - U64 const v3 = state->v3; - U64 const v4 = state->v4; - - h64 = XXH_rotl64(v1, 1) + XXH_rotl64(v2, 7) + XXH_rotl64(v3, 12) + XXH_rotl64(v4, 18); - h64 = XXH64_mergeRound(h64, v1); - h64 = XXH64_mergeRound(h64, v2); - h64 = XXH64_mergeRound(h64, v3); - h64 = XXH64_mergeRound(h64, v4); - } else { - h64 = state->v3 + PRIME64_5; - } - - h64 += (U64) state->total_len; - - while (p+8<=bEnd) { - U64 const k1 = XXH64_round(0, XXH_readLE64(p, endian)); - h64 ^= k1; - h64 = XXH_rotl64(h64,27) * PRIME64_1 + PRIME64_4; - p+=8; - } - - if (p+4<=bEnd) { - h64 ^= (U64)(XXH_readLE32(p, endian)) * PRIME64_1; - h64 = XXH_rotl64(h64, 23) * PRIME64_2 + PRIME64_3; - p+=4; - } - - while (p> 33; - h64 *= PRIME64_2; - h64 ^= h64 >> 29; - h64 *= PRIME64_3; - h64 ^= h64 >> 32; - - return h64; -} - - -XXH_PUBLIC_API unsigned long long XXH64_digest (const XXH64_state_t* state_in) -{ - XXH_endianess endian_detected = (XXH_endianess)XXH_CPU_LITTLE_ENDIAN; - - if ((endian_detected==XXH_littleEndian) || XXH_FORCE_NATIVE_FORMAT) - return XXH64_digest_endian(state_in, XXH_littleEndian); - else - return XXH64_digest_endian(state_in, XXH_bigEndian); -} - - -/* ************************** -* Canonical representation -****************************/ - -/*! Default XXH result types are basic unsigned 32 and 64 bits. -* The canonical representation follows human-readable write convention, aka big-endian (large digits first). -* These functions allow transformation of hash result into and from its canonical format. -* This way, hash values can be written into a file or buffer, and remain comparable across different systems and programs. -*/ - -XXH_PUBLIC_API void XXH32_canonicalFromHash(XXH32_canonical_t* dst, XXH32_hash_t hash) -{ - XXH_STATIC_ASSERT(sizeof(XXH32_canonical_t) == sizeof(XXH32_hash_t)); - if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap32(hash); - ZSTD_memcpy(dst, &hash, sizeof(*dst)); -} - -XXH_PUBLIC_API void XXH64_canonicalFromHash(XXH64_canonical_t* dst, XXH64_hash_t hash) -{ - XXH_STATIC_ASSERT(sizeof(XXH64_canonical_t) == sizeof(XXH64_hash_t)); - if (XXH_CPU_LITTLE_ENDIAN) hash = XXH_swap64(hash); - ZSTD_memcpy(dst, &hash, sizeof(*dst)); -} - -XXH_PUBLIC_API XXH32_hash_t XXH32_hashFromCanonical(const XXH32_canonical_t* src) -{ - return XXH_readBE32(src); -} - -XXH_PUBLIC_API XXH64_hash_t XXH64_hashFromCanonical(const XXH64_canonical_t* src) -{ - return XXH_readBE64(src); -} -/**** ended inlining xxhash.c ****/ -# endif - -#endif /* XXH_STATIC_LINKING_ONLY && XXH_STATIC_H_3543687687345 */ - - -#if defined (__cplusplus) -} -#endif -/**** ended inlining xxhash.h ****/ - -#if defined (__cplusplus) -extern "C" { -#endif - -/* ---- static assert (debug) --- */ -#define ZSTD_STATIC_ASSERT(c) DEBUG_STATIC_ASSERT(c) -#define ZSTD_isError ERR_isError /* for inlining */ -#define FSE_isError ERR_isError -#define HUF_isError ERR_isError - - -/*-************************************* -* shared macros -***************************************/ -#undef MIN -#undef MAX -#define MIN(a,b) ((a)<(b) ? (a) : (b)) -#define MAX(a,b) ((a)>(b) ? (a) : (b)) - -/** - * Ignore: this is an internal helper. - * - * This is a helper function to help force C99-correctness during compilation. - * Under strict compilation modes, variadic macro arguments can't be empty. - * However, variadic function arguments can be. Using a function therefore lets - * us statically check that at least one (string) argument was passed, - * independent of the compilation flags. - */ -static INLINE_KEYWORD UNUSED_ATTR -void _force_has_format_string(const char *format, ...) { - (void)format; -} - -/** - * Ignore: this is an internal helper. - * - * We want to force this function invocation to be syntactically correct, but - * we don't want to force runtime evaluation of its arguments. - */ -#define _FORCE_HAS_FORMAT_STRING(...) \ - if (0) { \ - _force_has_format_string(__VA_ARGS__); \ - } - -/** - * Return the specified error if the condition evaluates to true. - * - * In debug modes, prints additional information. - * In order to do that (particularly, printing the conditional that failed), - * this can't just wrap RETURN_ERROR(). - */ -#define RETURN_ERROR_IF(cond, err, ...) \ - if (cond) { \ - RAWLOG(3, "%s:%d: ERROR!: check %s failed, returning %s", \ - __FILE__, __LINE__, ZSTD_QUOTE(cond), ZSTD_QUOTE(ERROR(err))); \ - _FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \ - RAWLOG(3, ": " __VA_ARGS__); \ - RAWLOG(3, "\n"); \ - return ERROR(err); \ - } - -/** - * Unconditionally return the specified error. - * - * In debug modes, prints additional information. - */ -#define RETURN_ERROR(err, ...) \ - do { \ - RAWLOG(3, "%s:%d: ERROR!: unconditional check failed, returning %s", \ - __FILE__, __LINE__, ZSTD_QUOTE(ERROR(err))); \ - _FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \ - RAWLOG(3, ": " __VA_ARGS__); \ - RAWLOG(3, "\n"); \ - return ERROR(err); \ - } while(0); - -/** - * If the provided expression evaluates to an error code, returns that error code. - * - * In debug modes, prints additional information. - */ -#define FORWARD_IF_ERROR(err, ...) \ - do { \ - size_t const err_code = (err); \ - if (ERR_isError(err_code)) { \ - RAWLOG(3, "%s:%d: ERROR!: forwarding error in %s: %s", \ - __FILE__, __LINE__, ZSTD_QUOTE(err), ERR_getErrorName(err_code)); \ - _FORCE_HAS_FORMAT_STRING(__VA_ARGS__); \ - RAWLOG(3, ": " __VA_ARGS__); \ - RAWLOG(3, "\n"); \ - return err_code; \ - } \ - } while(0); - - -/*-************************************* -* Common constants -***************************************/ -#define ZSTD_OPT_NUM (1<<12) - -#define ZSTD_REP_NUM 3 /* number of repcodes */ -#define ZSTD_REP_MOVE (ZSTD_REP_NUM-1) -static UNUSED_ATTR const U32 repStartValue[ZSTD_REP_NUM] = { 1, 4, 8 }; - -#define KB *(1 <<10) -#define MB *(1 <<20) -#define GB *(1U<<30) - -#define BIT7 128 -#define BIT6 64 -#define BIT5 32 -#define BIT4 16 -#define BIT1 2 -#define BIT0 1 - -#define ZSTD_WINDOWLOG_ABSOLUTEMIN 10 -static UNUSED_ATTR const size_t ZSTD_fcs_fieldSize[4] = { 0, 2, 4, 8 }; -static UNUSED_ATTR const size_t ZSTD_did_fieldSize[4] = { 0, 1, 2, 4 }; - -#define ZSTD_FRAMEIDSIZE 4 /* magic number size */ - -#define ZSTD_BLOCKHEADERSIZE 3 /* C standard doesn't allow `static const` variable to be init using another `static const` variable */ -static UNUSED_ATTR const size_t ZSTD_blockHeaderSize = ZSTD_BLOCKHEADERSIZE; -typedef enum { bt_raw, bt_rle, bt_compressed, bt_reserved } blockType_e; - -#define ZSTD_FRAMECHECKSUMSIZE 4 - -#define MIN_SEQUENCES_SIZE 1 /* nbSeq==0 */ -#define MIN_CBLOCK_SIZE (1 /*litCSize*/ + 1 /* RLE or RAW */ + MIN_SEQUENCES_SIZE /* nbSeq==0 */) /* for a non-null block */ - -#define HufLog 12 -typedef enum { set_basic, set_rle, set_compressed, set_repeat } symbolEncodingType_e; - -#define LONGNBSEQ 0x7F00 - -#define MINMATCH 3 - -#define Litbits 8 -#define MaxLit ((1<= 8 || (ovtype == ZSTD_no_overlap && diff <= -WILDCOPY_VECLEN)); - - if (ovtype == ZSTD_overlap_src_before_dst && diff < WILDCOPY_VECLEN) { - /* Handle short offset copies. */ - do { - COPY8(op, ip) - } while (op < oend); - } else { - assert(diff >= WILDCOPY_VECLEN || diff <= -WILDCOPY_VECLEN); - /* Separate out the first COPY16() call because the copy length is - * almost certain to be short, so the branches have different - * probabilities. Since it is almost certain to be short, only do - * one COPY16() in the first call. Then, do two calls per loop since - * at that point it is more likely to have a high trip count. - */ -#ifdef __aarch64__ - do { - COPY16(op, ip); - } - while (op < oend); -#else - ZSTD_copy16(op, ip); - if (16 >= length) return; - op += 16; - ip += 16; - do { - COPY16(op, ip); - COPY16(op, ip); - } - while (op < oend); -#endif - } -} - -MEM_STATIC size_t ZSTD_limitCopy(void* dst, size_t dstCapacity, const void* src, size_t srcSize) -{ - size_t const length = MIN(dstCapacity, srcSize); - if (length > 0) { - ZSTD_memcpy(dst, src, length); - } - return length; -} - -/* define "workspace is too large" as this number of times larger than needed */ -#define ZSTD_WORKSPACETOOLARGE_FACTOR 3 - -/* when workspace is continuously too large - * during at least this number of times, - * context's memory usage is considered wasteful, - * because it's sized to handle a worst case scenario which rarely happens. - * In which case, resize it down to free some memory */ -#define ZSTD_WORKSPACETOOLARGE_MAXDURATION 128 - -/* Controls whether the input/output buffer is buffered or stable. */ -typedef enum { - ZSTD_bm_buffered = 0, /* Buffer the input/output */ - ZSTD_bm_stable = 1 /* ZSTD_inBuffer/ZSTD_outBuffer is stable */ -} ZSTD_bufferMode_e; - - -/*-******************************************* -* Private declarations -*********************************************/ -typedef struct seqDef_s { - U32 offset; /* Offset code of the sequence */ - U16 litLength; - U16 matchLength; -} seqDef; - -typedef struct { - seqDef* sequencesStart; - seqDef* sequences; /* ptr to end of sequences */ - BYTE* litStart; - BYTE* lit; /* ptr to end of literals */ - BYTE* llCode; - BYTE* mlCode; - BYTE* ofCode; - size_t maxNbSeq; - size_t maxNbLit; - - /* longLengthPos and longLengthID to allow us to represent either a single litLength or matchLength - * in the seqStore that has a value larger than U16 (if it exists). To do so, we increment - * the existing value of the litLength or matchLength by 0x10000. - */ - U32 longLengthID; /* 0 == no longLength; 1 == Represent the long literal; 2 == Represent the long match; */ - U32 longLengthPos; /* Index of the sequence to apply long length modification to */ -} seqStore_t; - -typedef struct { - U32 litLength; - U32 matchLength; -} ZSTD_sequenceLength; - -/** - * Returns the ZSTD_sequenceLength for the given sequences. It handles the decoding of long sequences - * indicated by longLengthPos and longLengthID, and adds MINMATCH back to matchLength. - */ -MEM_STATIC ZSTD_sequenceLength ZSTD_getSequenceLength(seqStore_t const* seqStore, seqDef const* seq) -{ - ZSTD_sequenceLength seqLen; - seqLen.litLength = seq->litLength; - seqLen.matchLength = seq->matchLength + MINMATCH; - if (seqStore->longLengthPos == (U32)(seq - seqStore->sequencesStart)) { - if (seqStore->longLengthID == 1) { - seqLen.litLength += 0xFFFF; - } - if (seqStore->longLengthID == 2) { - seqLen.matchLength += 0xFFFF; - } - } - return seqLen; -} - -/** - * Contains the compressed frame size and an upper-bound for the decompressed frame size. - * Note: before using `compressedSize`, check for errors using ZSTD_isError(). - * similarly, before using `decompressedBound`, check for errors using: - * `decompressedBound != ZSTD_CONTENTSIZE_ERROR` - */ -typedef struct { - size_t compressedSize; - unsigned long long decompressedBound; -} ZSTD_frameSizeInfo; /* decompress & legacy */ - -const seqStore_t* ZSTD_getSeqStore(const ZSTD_CCtx* ctx); /* compress & dictBuilder */ -void ZSTD_seqToCodes(const seqStore_t* seqStorePtr); /* compress, dictBuilder, decodeCorpus (shouldn't get its definition from here) */ - -/* custom memory allocation functions */ -void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem); -void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem); -void ZSTD_customFree(void* ptr, ZSTD_customMem customMem); - - -MEM_STATIC U32 ZSTD_highbit32(U32 val) /* compress, dictBuilder, decodeCorpus */ -{ - assert(val != 0); - { -# if defined(_MSC_VER) /* Visual */ -# if STATIC_BMI2 == 1 - return _lzcnt_u32(val)^31; -# else - unsigned long r=0; - return _BitScanReverse(&r, val) ? (unsigned)r : 0; -# endif -# elif defined(__GNUC__) && (__GNUC__ >= 3) /* GCC Intrinsic */ - return __builtin_clz (val) ^ 31; -# elif defined(__ICCARM__) /* IAR Intrinsic */ - return 31 - __CLZ(val); -# else /* Software version */ - static const U32 DeBruijnClz[32] = { 0, 9, 1, 10, 13, 21, 2, 29, 11, 14, 16, 18, 22, 25, 3, 30, 8, 12, 20, 28, 15, 17, 24, 7, 19, 27, 23, 6, 26, 5, 4, 31 }; - U32 v = val; - v |= v >> 1; - v |= v >> 2; - v |= v >> 4; - v |= v >> 8; - v |= v >> 16; - return DeBruijnClz[(v * 0x07C4ACDDU) >> 27]; -# endif - } -} - - -/* ZSTD_invalidateRepCodes() : - * ensures next compression will not use repcodes from previous block. - * Note : only works with regular variant; - * do not use with extDict variant ! */ -void ZSTD_invalidateRepCodes(ZSTD_CCtx* cctx); /* zstdmt, adaptive_compression (shouldn't get this definition from here) */ - - -typedef struct { - blockType_e blockType; - U32 lastBlock; - U32 origSize; -} blockProperties_t; /* declared here for decompress and fullbench */ - -/*! ZSTD_getcBlockSize() : - * Provides the size of compressed block from block header `src` */ -/* Used by: decompress, fullbench (does not get its definition from here) */ -size_t ZSTD_getcBlockSize(const void* src, size_t srcSize, - blockProperties_t* bpPtr); - -/*! ZSTD_decodeSeqHeaders() : - * decode sequence header from src */ -/* Used by: decompress, fullbench (does not get its definition from here) */ -size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr, - const void* src, size_t srcSize); - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_CCOMMON_H_MODULE */ -/**** ended inlining zstd_internal.h ****/ - - -/*-**************************************** -* Version -******************************************/ -unsigned ZSTD_versionNumber(void) { return ZSTD_VERSION_NUMBER; } - -const char* ZSTD_versionString(void) { return ZSTD_VERSION_STRING; } - - -/*-**************************************** -* ZSTD Error Management -******************************************/ -#undef ZSTD_isError /* defined within zstd_internal.h */ -/*! ZSTD_isError() : - * tells if a return value is an error code - * symbol is required for external callers */ -unsigned ZSTD_isError(size_t code) { return ERR_isError(code); } - -/*! ZSTD_getErrorName() : - * provides error code string from function result (useful for debugging) */ -const char* ZSTD_getErrorName(size_t code) { return ERR_getErrorName(code); } - -/*! ZSTD_getError() : - * convert a `size_t` function result into a proper ZSTD_errorCode enum */ -ZSTD_ErrorCode ZSTD_getErrorCode(size_t code) { return ERR_getErrorCode(code); } - -/*! ZSTD_getErrorString() : - * provides error code string from enum */ -const char* ZSTD_getErrorString(ZSTD_ErrorCode code) { return ERR_getErrorString(code); } - - - -/*=************************************************************** -* Custom allocator -****************************************************************/ -void* ZSTD_customMalloc(size_t size, ZSTD_customMem customMem) -{ - if (customMem.customAlloc) - return customMem.customAlloc(customMem.opaque, size); - return ZSTD_malloc(size); -} - -void* ZSTD_customCalloc(size_t size, ZSTD_customMem customMem) -{ - if (customMem.customAlloc) { - /* calloc implemented as malloc+memset; - * not as efficient as calloc, but next best guess for custom malloc */ - void* const ptr = customMem.customAlloc(customMem.opaque, size); - ZSTD_memset(ptr, 0, size); - return ptr; - } - return ZSTD_calloc(1, size); -} - -void ZSTD_customFree(void* ptr, ZSTD_customMem customMem) -{ - if (ptr!=NULL) { - if (customMem.customFree) - customMem.customFree(customMem.opaque, ptr); - else - ZSTD_free(ptr); - } -} -/**** ended inlining common/zstd_common.c ****/ - -/**** start inlining decompress/huf_decompress.c ****/ -/* ****************************************************************** - * huff0 huffman decoder, - * part of Finite State Entropy library - * Copyright (c) 2013-2021, Yann Collet, Facebook, Inc. - * - * You can contact the author at : - * - FSE+HUF source repository : https://github.com/Cyan4973/FiniteStateEntropy - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. -****************************************************************** */ - -/* ************************************************************** -* Dependencies -****************************************************************/ -/**** skipping file: ../common/zstd_deps.h ****/ -/**** skipping file: ../common/compiler.h ****/ -/**** skipping file: ../common/bitstream.h ****/ -/**** skipping file: ../common/fse.h ****/ -#define HUF_STATIC_LINKING_ONLY -/**** skipping file: ../common/huf.h ****/ -/**** skipping file: ../common/error_private.h ****/ - -/* ************************************************************** -* Macros -****************************************************************/ - -/* These two optional macros force the use one way or another of the two - * Huffman decompression implementations. You can't force in both directions - * at the same time. - */ -#if defined(HUF_FORCE_DECOMPRESS_X1) && \ - defined(HUF_FORCE_DECOMPRESS_X2) -#error "Cannot force the use of the X1 and X2 decoders at the same time!" -#endif - - -/* ************************************************************** -* Error Management -****************************************************************/ -#define HUF_isError ERR_isError - - -/* ************************************************************** -* Byte alignment for workSpace management -****************************************************************/ -#define HUF_ALIGN(x, a) HUF_ALIGN_MASK((x), (a) - 1) -#define HUF_ALIGN_MASK(x, mask) (((x) + (mask)) & ~(mask)) - - -/* ************************************************************** -* BMI2 Variant Wrappers -****************************************************************/ -#if DYNAMIC_BMI2 - -#define HUF_DGEN(fn) \ - \ - static size_t fn##_default( \ - void* dst, size_t dstSize, \ - const void* cSrc, size_t cSrcSize, \ - const HUF_DTable* DTable) \ - { \ - return fn##_body(dst, dstSize, cSrc, cSrcSize, DTable); \ - } \ - \ - static TARGET_ATTRIBUTE("bmi2") size_t fn##_bmi2( \ - void* dst, size_t dstSize, \ - const void* cSrc, size_t cSrcSize, \ - const HUF_DTable* DTable) \ - { \ - return fn##_body(dst, dstSize, cSrc, cSrcSize, DTable); \ - } \ - \ - static size_t fn(void* dst, size_t dstSize, void const* cSrc, \ - size_t cSrcSize, HUF_DTable const* DTable, int bmi2) \ - { \ - if (bmi2) { \ - return fn##_bmi2(dst, dstSize, cSrc, cSrcSize, DTable); \ - } \ - return fn##_default(dst, dstSize, cSrc, cSrcSize, DTable); \ - } - -#else - -#define HUF_DGEN(fn) \ - static size_t fn(void* dst, size_t dstSize, void const* cSrc, \ - size_t cSrcSize, HUF_DTable const* DTable, int bmi2) \ - { \ - (void)bmi2; \ - return fn##_body(dst, dstSize, cSrc, cSrcSize, DTable); \ - } - -#endif - - -/*-***************************/ -/* generic DTableDesc */ -/*-***************************/ -typedef struct { BYTE maxTableLog; BYTE tableType; BYTE tableLog; BYTE reserved; } DTableDesc; - -static DTableDesc HUF_getDTableDesc(const HUF_DTable* table) -{ - DTableDesc dtd; - ZSTD_memcpy(&dtd, table, sizeof(dtd)); - return dtd; -} - - -#ifndef HUF_FORCE_DECOMPRESS_X2 - -/*-***************************/ -/* single-symbol decoding */ -/*-***************************/ -typedef struct { BYTE byte; BYTE nbBits; } HUF_DEltX1; /* single-symbol decoding */ - -/** - * Packs 4 HUF_DEltX1 structs into a U64. This is used to lay down 4 entries at - * a time. - */ -static U64 HUF_DEltX1_set4(BYTE symbol, BYTE nbBits) { - U64 D4; - if (MEM_isLittleEndian()) { - D4 = symbol + (nbBits << 8); - } else { - D4 = (symbol << 8) + nbBits; - } - D4 *= 0x0001000100010001ULL; - return D4; -} - -typedef struct { - U32 rankVal[HUF_TABLELOG_ABSOLUTEMAX + 1]; - U32 rankStart[HUF_TABLELOG_ABSOLUTEMAX + 1]; - U32 statsWksp[HUF_READ_STATS_WORKSPACE_SIZE_U32]; - BYTE symbols[HUF_SYMBOLVALUE_MAX + 1]; - BYTE huffWeight[HUF_SYMBOLVALUE_MAX + 1]; -} HUF_ReadDTableX1_Workspace; - - -size_t HUF_readDTableX1_wksp(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize) -{ - return HUF_readDTableX1_wksp_bmi2(DTable, src, srcSize, workSpace, wkspSize, /* bmi2 */ 0); -} - -size_t HUF_readDTableX1_wksp_bmi2(HUF_DTable* DTable, const void* src, size_t srcSize, void* workSpace, size_t wkspSize, int bmi2) -{ - U32 tableLog = 0; - U32 nbSymbols = 0; - size_t iSize; - void* const dtPtr = DTable + 1; - HUF_DEltX1* const dt = (HUF_DEltX1*)dtPtr; - HUF_ReadDTableX1_Workspace* wksp = (HUF_ReadDTableX1_Workspace*)workSpace; - - DEBUG_STATIC_ASSERT(HUF_DECOMPRESS_WORKSPACE_SIZE >= sizeof(*wksp)); - if (sizeof(*wksp) > wkspSize) return ERROR(tableLog_tooLarge); - - DEBUG_STATIC_ASSERT(sizeof(DTableDesc) == sizeof(HUF_DTable)); - /* ZSTD_memset(huffWeight, 0, sizeof(huffWeight)); */ /* is not necessary, even though some analyzer complain ... */ - - iSize = HUF_readStats_wksp(wksp->huffWeight, HUF_SYMBOLVALUE_MAX + 1, wksp->rankVal, &nbSymbols, &tableLog, src, srcSize, wksp->statsWksp, sizeof(wksp->statsWksp), bmi2); - if (HUF_isError(iSize)) return iSize; - - /* Table header */ - { DTableDesc dtd = HUF_getDTableDesc(DTable); - if (tableLog > (U32)(dtd.maxTableLog+1)) return ERROR(tableLog_tooLarge); /* DTable too small, Huffman tree cannot fit in */ - dtd.tableType = 0; - dtd.tableLog = (BYTE)tableLog; - ZSTD_memcpy(DTable, &dtd, sizeof(dtd)); - } - - /* Compute symbols and rankStart given rankVal: - * - * rankVal already contains the number of values of each weight. - * - * symbols contains the symbols ordered by weight. First are the rankVal[0] - * weight 0 symbols, followed by the rankVal[1] weight 1 symbols, and so on. - * symbols[0] is filled (but unused) to avoid a branch. - * - * rankStart contains the offset where each rank belongs in the DTable. - * rankStart[0] is not filled because there are no entries in the table for - * weight 0. - */ - { - int n; - int nextRankStart = 0; - int const unroll = 4; - int const nLimit = (int)nbSymbols - unroll + 1; - for (n=0; n<(int)tableLog+1; n++) { - U32 const curr = nextRankStart; - nextRankStart += wksp->rankVal[n]; - wksp->rankStart[n] = curr; - } - for (n=0; n < nLimit; n += unroll) { - int u; - for (u=0; u < unroll; ++u) { - size_t const w = wksp->huffWeight[n+u]; - wksp->symbols[wksp->rankStart[w]++] = (BYTE)(n+u); - } - } - for (; n < (int)nbSymbols; ++n) { - size_t const w = wksp->huffWeight[n]; - wksp->symbols[wksp->rankStart[w]++] = (BYTE)n; - } - } - - /* fill DTable - * We fill all entries of each weight in order. - * That way length is a constant for each iteration of the outter loop. - * We can switch based on the length to a different inner loop which is - * optimized for that particular case. - */ - { - U32 w; - int symbol=wksp->rankVal[0]; - int rankStart=0; - for (w=1; wrankVal[w]; - int const length = (1 << w) >> 1; - int uStart = rankStart; - BYTE const nbBits = (BYTE)(tableLog + 1 - w); - int s; - int u; - switch (length) { - case 1: - for (s=0; ssymbols[symbol + s]; - D.nbBits = nbBits; - dt[uStart] = D; - uStart += 1; - } - break; - case 2: - for (s=0; ssymbols[symbol + s]; - D.nbBits = nbBits; - dt[uStart+0] = D; - dt[uStart+1] = D; - uStart += 2; - } - break; - case 4: - for (s=0; ssymbols[symbol + s], nbBits); - MEM_write64(dt + uStart, D4); - uStart += 4; - } - break; - case 8: - for (s=0; ssymbols[symbol + s], nbBits); - MEM_write64(dt + uStart, D4); - MEM_write64(dt + uStart + 4, D4); - uStart += 8; - } - break; - default: - for (s=0; ssymbols[symbol + s], nbBits); - for (u=0; u < length; u += 16) { - MEM_write64(dt + uStart + u + 0, D4); - MEM_write64(dt + uStart + u + 4, D4); - MEM_write64(dt + uStart + u + 8, D4); - MEM_write64(dt + uStart + u + 12, D4); - } - assert(u == length); - uStart += length; - } - break; - } - symbol += symbolCount; - rankStart += symbolCount * length; - } - } - return iSize; -} - -FORCE_INLINE_TEMPLATE BYTE -HUF_decodeSymbolX1(BIT_DStream_t* Dstream, const HUF_DEltX1* dt, const U32 dtLog) -{ - size_t const val = BIT_lookBitsFast(Dstream, dtLog); /* note : dtLog >= 1 */ - BYTE const c = dt[val].byte; - BIT_skipBits(Dstream, dt[val].nbBits); - return c; -} - -#define HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr) \ - *ptr++ = HUF_decodeSymbolX1(DStreamPtr, dt, dtLog) - -#define HUF_DECODE_SYMBOLX1_1(ptr, DStreamPtr) \ - if (MEM_64bits() || (HUF_TABLELOG_MAX<=12)) \ - HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr) - -#define HUF_DECODE_SYMBOLX1_2(ptr, DStreamPtr) \ - if (MEM_64bits()) \ - HUF_DECODE_SYMBOLX1_0(ptr, DStreamPtr) - -HINT_INLINE size_t -HUF_decodeStreamX1(BYTE* p, BIT_DStream_t* const bitDPtr, BYTE* const pEnd, const HUF_DEltX1* const dt, const U32 dtLog) -{ - BYTE* const pStart = p; - - /* up to 4 symbols at a time */ - while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-3)) { - HUF_DECODE_SYMBOLX1_2(p, bitDPtr); - HUF_DECODE_SYMBOLX1_1(p, bitDPtr); - HUF_DECODE_SYMBOLX1_2(p, bitDPtr); - HUF_DECODE_SYMBOLX1_0(p, bitDPtr); - } - - /* [0-3] symbols remaining */ - if (MEM_32bits()) - while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd)) - HUF_DECODE_SYMBOLX1_0(p, bitDPtr); - - /* no more data to retrieve from bitstream, no need to reload */ - while (p < pEnd) - HUF_DECODE_SYMBOLX1_0(p, bitDPtr); - - return pEnd-pStart; -} - -FORCE_INLINE_TEMPLATE size_t -HUF_decompress1X1_usingDTable_internal_body( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - BYTE* op = (BYTE*)dst; - BYTE* const oend = op + dstSize; - const void* dtPtr = DTable + 1; - const HUF_DEltX1* const dt = (const HUF_DEltX1*)dtPtr; - BIT_DStream_t bitD; - DTableDesc const dtd = HUF_getDTableDesc(DTable); - U32 const dtLog = dtd.tableLog; - - CHECK_F( BIT_initDStream(&bitD, cSrc, cSrcSize) ); - - HUF_decodeStreamX1(op, &bitD, oend, dt, dtLog); - - if (!BIT_endOfDStream(&bitD)) return ERROR(corruption_detected); - - return dstSize; -} - -FORCE_INLINE_TEMPLATE size_t -HUF_decompress4X1_usingDTable_internal_body( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - /* Check */ - if (cSrcSize < 10) return ERROR(corruption_detected); /* strict minimum : jump table + 1 byte per stream */ - - { const BYTE* const istart = (const BYTE*) cSrc; - BYTE* const ostart = (BYTE*) dst; - BYTE* const oend = ostart + dstSize; - BYTE* const olimit = oend - 3; - const void* const dtPtr = DTable + 1; - const HUF_DEltX1* const dt = (const HUF_DEltX1*)dtPtr; - - /* Init */ - BIT_DStream_t bitD1; - BIT_DStream_t bitD2; - BIT_DStream_t bitD3; - BIT_DStream_t bitD4; - size_t const length1 = MEM_readLE16(istart); - size_t const length2 = MEM_readLE16(istart+2); - size_t const length3 = MEM_readLE16(istart+4); - size_t const length4 = cSrcSize - (length1 + length2 + length3 + 6); - const BYTE* const istart1 = istart + 6; /* jumpTable */ - const BYTE* const istart2 = istart1 + length1; - const BYTE* const istart3 = istart2 + length2; - const BYTE* const istart4 = istart3 + length3; - const size_t segmentSize = (dstSize+3) / 4; - BYTE* const opStart2 = ostart + segmentSize; - BYTE* const opStart3 = opStart2 + segmentSize; - BYTE* const opStart4 = opStart3 + segmentSize; - BYTE* op1 = ostart; - BYTE* op2 = opStart2; - BYTE* op3 = opStart3; - BYTE* op4 = opStart4; - DTableDesc const dtd = HUF_getDTableDesc(DTable); - U32 const dtLog = dtd.tableLog; - U32 endSignal = 1; - - if (length4 > cSrcSize) return ERROR(corruption_detected); /* overflow */ - CHECK_F( BIT_initDStream(&bitD1, istart1, length1) ); - CHECK_F( BIT_initDStream(&bitD2, istart2, length2) ); - CHECK_F( BIT_initDStream(&bitD3, istart3, length3) ); - CHECK_F( BIT_initDStream(&bitD4, istart4, length4) ); - - /* up to 16 symbols per loop (4 symbols per stream) in 64-bit mode */ - for ( ; (endSignal) & (op4 < olimit) ; ) { - HUF_DECODE_SYMBOLX1_2(op1, &bitD1); - HUF_DECODE_SYMBOLX1_2(op2, &bitD2); - HUF_DECODE_SYMBOLX1_2(op3, &bitD3); - HUF_DECODE_SYMBOLX1_2(op4, &bitD4); - HUF_DECODE_SYMBOLX1_1(op1, &bitD1); - HUF_DECODE_SYMBOLX1_1(op2, &bitD2); - HUF_DECODE_SYMBOLX1_1(op3, &bitD3); - HUF_DECODE_SYMBOLX1_1(op4, &bitD4); - HUF_DECODE_SYMBOLX1_2(op1, &bitD1); - HUF_DECODE_SYMBOLX1_2(op2, &bitD2); - HUF_DECODE_SYMBOLX1_2(op3, &bitD3); - HUF_DECODE_SYMBOLX1_2(op4, &bitD4); - HUF_DECODE_SYMBOLX1_0(op1, &bitD1); - HUF_DECODE_SYMBOLX1_0(op2, &bitD2); - HUF_DECODE_SYMBOLX1_0(op3, &bitD3); - HUF_DECODE_SYMBOLX1_0(op4, &bitD4); - endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished; - endSignal &= BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished; - endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished; - endSignal &= BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished; - } - - /* check corruption */ - /* note : should not be necessary : op# advance in lock step, and we control op4. - * but curiously, binary generated by gcc 7.2 & 7.3 with -mbmi2 runs faster when >=1 test is present */ - if (op1 > opStart2) return ERROR(corruption_detected); - if (op2 > opStart3) return ERROR(corruption_detected); - if (op3 > opStart4) return ERROR(corruption_detected); - /* note : op4 supposed already verified within main loop */ - - /* finish bitStreams one by one */ - HUF_decodeStreamX1(op1, &bitD1, opStart2, dt, dtLog); - HUF_decodeStreamX1(op2, &bitD2, opStart3, dt, dtLog); - HUF_decodeStreamX1(op3, &bitD3, opStart4, dt, dtLog); - HUF_decodeStreamX1(op4, &bitD4, oend, dt, dtLog); - - /* check */ - { U32 const endCheck = BIT_endOfDStream(&bitD1) & BIT_endOfDStream(&bitD2) & BIT_endOfDStream(&bitD3) & BIT_endOfDStream(&bitD4); - if (!endCheck) return ERROR(corruption_detected); } - - /* decoded size */ - return dstSize; - } -} - - -typedef size_t (*HUF_decompress_usingDTable_t)(void *dst, size_t dstSize, - const void *cSrc, - size_t cSrcSize, - const HUF_DTable *DTable); - -HUF_DGEN(HUF_decompress1X1_usingDTable_internal) -HUF_DGEN(HUF_decompress4X1_usingDTable_internal) - - - -size_t HUF_decompress1X1_usingDTable( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - DTableDesc dtd = HUF_getDTableDesc(DTable); - if (dtd.tableType != 0) return ERROR(GENERIC); - return HUF_decompress1X1_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -} - -size_t HUF_decompress1X1_DCtx_wksp(HUF_DTable* DCtx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize) -{ - const BYTE* ip = (const BYTE*) cSrc; - - size_t const hSize = HUF_readDTableX1_wksp(DCtx, cSrc, cSrcSize, workSpace, wkspSize); - if (HUF_isError(hSize)) return hSize; - if (hSize >= cSrcSize) return ERROR(srcSize_wrong); - ip += hSize; cSrcSize -= hSize; - - return HUF_decompress1X1_usingDTable_internal(dst, dstSize, ip, cSrcSize, DCtx, /* bmi2 */ 0); -} - - -size_t HUF_decompress4X1_usingDTable( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - DTableDesc dtd = HUF_getDTableDesc(DTable); - if (dtd.tableType != 0) return ERROR(GENERIC); - return HUF_decompress4X1_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -} - -static size_t HUF_decompress4X1_DCtx_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize, int bmi2) -{ - const BYTE* ip = (const BYTE*) cSrc; - - size_t const hSize = HUF_readDTableX1_wksp_bmi2(dctx, cSrc, cSrcSize, workSpace, wkspSize, bmi2); - if (HUF_isError(hSize)) return hSize; - if (hSize >= cSrcSize) return ERROR(srcSize_wrong); - ip += hSize; cSrcSize -= hSize; - - return HUF_decompress4X1_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx, bmi2); -} - -size_t HUF_decompress4X1_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize) -{ - return HUF_decompress4X1_DCtx_wksp_bmi2(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize, 0); -} - - -#endif /* HUF_FORCE_DECOMPRESS_X2 */ - - -#ifndef HUF_FORCE_DECOMPRESS_X1 - -/* *************************/ -/* double-symbols decoding */ -/* *************************/ - -typedef struct { U16 sequence; BYTE nbBits; BYTE length; } HUF_DEltX2; /* double-symbols decoding */ -typedef struct { BYTE symbol; BYTE weight; } sortedSymbol_t; -typedef U32 rankValCol_t[HUF_TABLELOG_MAX + 1]; -typedef rankValCol_t rankVal_t[HUF_TABLELOG_MAX]; - - -/* HUF_fillDTableX2Level2() : - * `rankValOrigin` must be a table of at least (HUF_TABLELOG_MAX + 1) U32 */ -static void HUF_fillDTableX2Level2(HUF_DEltX2* DTable, U32 sizeLog, const U32 consumed, - const U32* rankValOrigin, const int minWeight, - const sortedSymbol_t* sortedSymbols, const U32 sortedListSize, - U32 nbBitsBaseline, U16 baseSeq) -{ - HUF_DEltX2 DElt; - U32 rankVal[HUF_TABLELOG_MAX + 1]; - - /* get pre-calculated rankVal */ - ZSTD_memcpy(rankVal, rankValOrigin, sizeof(rankVal)); - - /* fill skipped values */ - if (minWeight>1) { - U32 i, skipSize = rankVal[minWeight]; - MEM_writeLE16(&(DElt.sequence), baseSeq); - DElt.nbBits = (BYTE)(consumed); - DElt.length = 1; - for (i = 0; i < skipSize; i++) - DTable[i] = DElt; - } - - /* fill DTable */ - { U32 s; for (s=0; s= 1 */ - - rankVal[weight] += length; - } } -} - - -static void HUF_fillDTableX2(HUF_DEltX2* DTable, const U32 targetLog, - const sortedSymbol_t* sortedList, const U32 sortedListSize, - const U32* rankStart, rankVal_t rankValOrigin, const U32 maxWeight, - const U32 nbBitsBaseline) -{ - U32 rankVal[HUF_TABLELOG_MAX + 1]; - const int scaleLog = nbBitsBaseline - targetLog; /* note : targetLog >= srcLog, hence scaleLog <= 1 */ - const U32 minBits = nbBitsBaseline - maxWeight; - U32 s; - - ZSTD_memcpy(rankVal, rankValOrigin, sizeof(rankVal)); - - /* fill DTable */ - for (s=0; s= minBits) { /* enough room for a second symbol */ - U32 sortedRank; - int minWeight = nbBits + scaleLog; - if (minWeight < 1) minWeight = 1; - sortedRank = rankStart[minWeight]; - HUF_fillDTableX2Level2(DTable+start, targetLog-nbBits, nbBits, - rankValOrigin[nbBits], minWeight, - sortedList+sortedRank, sortedListSize-sortedRank, - nbBitsBaseline, symbol); - } else { - HUF_DEltX2 DElt; - MEM_writeLE16(&(DElt.sequence), symbol); - DElt.nbBits = (BYTE)(nbBits); - DElt.length = 1; - { U32 const end = start + length; - U32 u; - for (u = start; u < end; u++) DTable[u] = DElt; - } } - rankVal[weight] += length; - } -} - -size_t HUF_readDTableX2_wksp(HUF_DTable* DTable, - const void* src, size_t srcSize, - void* workSpace, size_t wkspSize) -{ - U32 tableLog, maxW, sizeOfSort, nbSymbols; - DTableDesc dtd = HUF_getDTableDesc(DTable); - U32 const maxTableLog = dtd.maxTableLog; - size_t iSize; - void* dtPtr = DTable+1; /* force compiler to avoid strict-aliasing */ - HUF_DEltX2* const dt = (HUF_DEltX2*)dtPtr; - U32 *rankStart; - - rankValCol_t* rankVal; - U32* rankStats; - U32* rankStart0; - sortedSymbol_t* sortedSymbol; - BYTE* weightList; - size_t spaceUsed32 = 0; - - rankVal = (rankValCol_t *)((U32 *)workSpace + spaceUsed32); - spaceUsed32 += (sizeof(rankValCol_t) * HUF_TABLELOG_MAX) >> 2; - rankStats = (U32 *)workSpace + spaceUsed32; - spaceUsed32 += HUF_TABLELOG_MAX + 1; - rankStart0 = (U32 *)workSpace + spaceUsed32; - spaceUsed32 += HUF_TABLELOG_MAX + 2; - sortedSymbol = (sortedSymbol_t *)workSpace + (spaceUsed32 * sizeof(U32)) / sizeof(sortedSymbol_t); - spaceUsed32 += HUF_ALIGN(sizeof(sortedSymbol_t) * (HUF_SYMBOLVALUE_MAX + 1), sizeof(U32)) >> 2; - weightList = (BYTE *)((U32 *)workSpace + spaceUsed32); - spaceUsed32 += HUF_ALIGN(HUF_SYMBOLVALUE_MAX + 1, sizeof(U32)) >> 2; - - if ((spaceUsed32 << 2) > wkspSize) return ERROR(tableLog_tooLarge); - - rankStart = rankStart0 + 1; - ZSTD_memset(rankStats, 0, sizeof(U32) * (2 * HUF_TABLELOG_MAX + 2 + 1)); - - DEBUG_STATIC_ASSERT(sizeof(HUF_DEltX2) == sizeof(HUF_DTable)); /* if compiler fails here, assertion is wrong */ - if (maxTableLog > HUF_TABLELOG_MAX) return ERROR(tableLog_tooLarge); - /* ZSTD_memset(weightList, 0, sizeof(weightList)); */ /* is not necessary, even though some analyzer complain ... */ - - iSize = HUF_readStats(weightList, HUF_SYMBOLVALUE_MAX + 1, rankStats, &nbSymbols, &tableLog, src, srcSize); - if (HUF_isError(iSize)) return iSize; - - /* check result */ - if (tableLog > maxTableLog) return ERROR(tableLog_tooLarge); /* DTable can't fit code depth */ - - /* find maxWeight */ - for (maxW = tableLog; rankStats[maxW]==0; maxW--) {} /* necessarily finds a solution before 0 */ - - /* Get start index of each weight */ - { U32 w, nextRankStart = 0; - for (w=1; w> consumed; - } } } } - - HUF_fillDTableX2(dt, maxTableLog, - sortedSymbol, sizeOfSort, - rankStart0, rankVal, maxW, - tableLog+1); - - dtd.tableLog = (BYTE)maxTableLog; - dtd.tableType = 1; - ZSTD_memcpy(DTable, &dtd, sizeof(dtd)); - return iSize; -} - - -FORCE_INLINE_TEMPLATE U32 -HUF_decodeSymbolX2(void* op, BIT_DStream_t* DStream, const HUF_DEltX2* dt, const U32 dtLog) -{ - size_t const val = BIT_lookBitsFast(DStream, dtLog); /* note : dtLog >= 1 */ - ZSTD_memcpy(op, dt+val, 2); - BIT_skipBits(DStream, dt[val].nbBits); - return dt[val].length; -} - -FORCE_INLINE_TEMPLATE U32 -HUF_decodeLastSymbolX2(void* op, BIT_DStream_t* DStream, const HUF_DEltX2* dt, const U32 dtLog) -{ - size_t const val = BIT_lookBitsFast(DStream, dtLog); /* note : dtLog >= 1 */ - ZSTD_memcpy(op, dt+val, 1); - if (dt[val].length==1) BIT_skipBits(DStream, dt[val].nbBits); - else { - if (DStream->bitsConsumed < (sizeof(DStream->bitContainer)*8)) { - BIT_skipBits(DStream, dt[val].nbBits); - if (DStream->bitsConsumed > (sizeof(DStream->bitContainer)*8)) - /* ugly hack; works only because it's the last symbol. Note : can't easily extract nbBits from just this symbol */ - DStream->bitsConsumed = (sizeof(DStream->bitContainer)*8); - } } - return 1; -} - -#define HUF_DECODE_SYMBOLX2_0(ptr, DStreamPtr) \ - ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog) - -#define HUF_DECODE_SYMBOLX2_1(ptr, DStreamPtr) \ - if (MEM_64bits() || (HUF_TABLELOG_MAX<=12)) \ - ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog) - -#define HUF_DECODE_SYMBOLX2_2(ptr, DStreamPtr) \ - if (MEM_64bits()) \ - ptr += HUF_decodeSymbolX2(ptr, DStreamPtr, dt, dtLog) - -HINT_INLINE size_t -HUF_decodeStreamX2(BYTE* p, BIT_DStream_t* bitDPtr, BYTE* const pEnd, - const HUF_DEltX2* const dt, const U32 dtLog) -{ - BYTE* const pStart = p; - - /* up to 8 symbols at a time */ - while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p < pEnd-(sizeof(bitDPtr->bitContainer)-1))) { - HUF_DECODE_SYMBOLX2_2(p, bitDPtr); - HUF_DECODE_SYMBOLX2_1(p, bitDPtr); - HUF_DECODE_SYMBOLX2_2(p, bitDPtr); - HUF_DECODE_SYMBOLX2_0(p, bitDPtr); - } - - /* closer to end : up to 2 symbols at a time */ - while ((BIT_reloadDStream(bitDPtr) == BIT_DStream_unfinished) & (p <= pEnd-2)) - HUF_DECODE_SYMBOLX2_0(p, bitDPtr); - - while (p <= pEnd-2) - HUF_DECODE_SYMBOLX2_0(p, bitDPtr); /* no need to reload : reached the end of DStream */ - - if (p < pEnd) - p += HUF_decodeLastSymbolX2(p, bitDPtr, dt, dtLog); - - return p-pStart; -} - -FORCE_INLINE_TEMPLATE size_t -HUF_decompress1X2_usingDTable_internal_body( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - BIT_DStream_t bitD; - - /* Init */ - CHECK_F( BIT_initDStream(&bitD, cSrc, cSrcSize) ); - - /* decode */ - { BYTE* const ostart = (BYTE*) dst; - BYTE* const oend = ostart + dstSize; - const void* const dtPtr = DTable+1; /* force compiler to not use strict-aliasing */ - const HUF_DEltX2* const dt = (const HUF_DEltX2*)dtPtr; - DTableDesc const dtd = HUF_getDTableDesc(DTable); - HUF_decodeStreamX2(ostart, &bitD, oend, dt, dtd.tableLog); - } - - /* check */ - if (!BIT_endOfDStream(&bitD)) return ERROR(corruption_detected); - - /* decoded size */ - return dstSize; -} - -FORCE_INLINE_TEMPLATE size_t -HUF_decompress4X2_usingDTable_internal_body( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - if (cSrcSize < 10) return ERROR(corruption_detected); /* strict minimum : jump table + 1 byte per stream */ - - { const BYTE* const istart = (const BYTE*) cSrc; - BYTE* const ostart = (BYTE*) dst; - BYTE* const oend = ostart + dstSize; - BYTE* const olimit = oend - (sizeof(size_t)-1); - const void* const dtPtr = DTable+1; - const HUF_DEltX2* const dt = (const HUF_DEltX2*)dtPtr; - - /* Init */ - BIT_DStream_t bitD1; - BIT_DStream_t bitD2; - BIT_DStream_t bitD3; - BIT_DStream_t bitD4; - size_t const length1 = MEM_readLE16(istart); - size_t const length2 = MEM_readLE16(istart+2); - size_t const length3 = MEM_readLE16(istart+4); - size_t const length4 = cSrcSize - (length1 + length2 + length3 + 6); - const BYTE* const istart1 = istart + 6; /* jumpTable */ - const BYTE* const istart2 = istart1 + length1; - const BYTE* const istart3 = istart2 + length2; - const BYTE* const istart4 = istart3 + length3; - size_t const segmentSize = (dstSize+3) / 4; - BYTE* const opStart2 = ostart + segmentSize; - BYTE* const opStart3 = opStart2 + segmentSize; - BYTE* const opStart4 = opStart3 + segmentSize; - BYTE* op1 = ostart; - BYTE* op2 = opStart2; - BYTE* op3 = opStart3; - BYTE* op4 = opStart4; - U32 endSignal = 1; - DTableDesc const dtd = HUF_getDTableDesc(DTable); - U32 const dtLog = dtd.tableLog; - - if (length4 > cSrcSize) return ERROR(corruption_detected); /* overflow */ - CHECK_F( BIT_initDStream(&bitD1, istart1, length1) ); - CHECK_F( BIT_initDStream(&bitD2, istart2, length2) ); - CHECK_F( BIT_initDStream(&bitD3, istart3, length3) ); - CHECK_F( BIT_initDStream(&bitD4, istart4, length4) ); - - /* 16-32 symbols per loop (4-8 symbols per stream) */ - for ( ; (endSignal) & (op4 < olimit); ) { -#if defined(__clang__) && (defined(__x86_64__) || defined(__i386__)) - HUF_DECODE_SYMBOLX2_2(op1, &bitD1); - HUF_DECODE_SYMBOLX2_1(op1, &bitD1); - HUF_DECODE_SYMBOLX2_2(op1, &bitD1); - HUF_DECODE_SYMBOLX2_0(op1, &bitD1); - HUF_DECODE_SYMBOLX2_2(op2, &bitD2); - HUF_DECODE_SYMBOLX2_1(op2, &bitD2); - HUF_DECODE_SYMBOLX2_2(op2, &bitD2); - HUF_DECODE_SYMBOLX2_0(op2, &bitD2); - endSignal &= BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished; - endSignal &= BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished; - HUF_DECODE_SYMBOLX2_2(op3, &bitD3); - HUF_DECODE_SYMBOLX2_1(op3, &bitD3); - HUF_DECODE_SYMBOLX2_2(op3, &bitD3); - HUF_DECODE_SYMBOLX2_0(op3, &bitD3); - HUF_DECODE_SYMBOLX2_2(op4, &bitD4); - HUF_DECODE_SYMBOLX2_1(op4, &bitD4); - HUF_DECODE_SYMBOLX2_2(op4, &bitD4); - HUF_DECODE_SYMBOLX2_0(op4, &bitD4); - endSignal &= BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished; - endSignal &= BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished; -#else - HUF_DECODE_SYMBOLX2_2(op1, &bitD1); - HUF_DECODE_SYMBOLX2_2(op2, &bitD2); - HUF_DECODE_SYMBOLX2_2(op3, &bitD3); - HUF_DECODE_SYMBOLX2_2(op4, &bitD4); - HUF_DECODE_SYMBOLX2_1(op1, &bitD1); - HUF_DECODE_SYMBOLX2_1(op2, &bitD2); - HUF_DECODE_SYMBOLX2_1(op3, &bitD3); - HUF_DECODE_SYMBOLX2_1(op4, &bitD4); - HUF_DECODE_SYMBOLX2_2(op1, &bitD1); - HUF_DECODE_SYMBOLX2_2(op2, &bitD2); - HUF_DECODE_SYMBOLX2_2(op3, &bitD3); - HUF_DECODE_SYMBOLX2_2(op4, &bitD4); - HUF_DECODE_SYMBOLX2_0(op1, &bitD1); - HUF_DECODE_SYMBOLX2_0(op2, &bitD2); - HUF_DECODE_SYMBOLX2_0(op3, &bitD3); - HUF_DECODE_SYMBOLX2_0(op4, &bitD4); - endSignal = (U32)LIKELY( - (BIT_reloadDStreamFast(&bitD1) == BIT_DStream_unfinished) - & (BIT_reloadDStreamFast(&bitD2) == BIT_DStream_unfinished) - & (BIT_reloadDStreamFast(&bitD3) == BIT_DStream_unfinished) - & (BIT_reloadDStreamFast(&bitD4) == BIT_DStream_unfinished)); -#endif - } - - /* check corruption */ - if (op1 > opStart2) return ERROR(corruption_detected); - if (op2 > opStart3) return ERROR(corruption_detected); - if (op3 > opStart4) return ERROR(corruption_detected); - /* note : op4 already verified within main loop */ - - /* finish bitStreams one by one */ - HUF_decodeStreamX2(op1, &bitD1, opStart2, dt, dtLog); - HUF_decodeStreamX2(op2, &bitD2, opStart3, dt, dtLog); - HUF_decodeStreamX2(op3, &bitD3, opStart4, dt, dtLog); - HUF_decodeStreamX2(op4, &bitD4, oend, dt, dtLog); - - /* check */ - { U32 const endCheck = BIT_endOfDStream(&bitD1) & BIT_endOfDStream(&bitD2) & BIT_endOfDStream(&bitD3) & BIT_endOfDStream(&bitD4); - if (!endCheck) return ERROR(corruption_detected); } - - /* decoded size */ - return dstSize; - } -} - -HUF_DGEN(HUF_decompress1X2_usingDTable_internal) -HUF_DGEN(HUF_decompress4X2_usingDTable_internal) - -size_t HUF_decompress1X2_usingDTable( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - DTableDesc dtd = HUF_getDTableDesc(DTable); - if (dtd.tableType != 1) return ERROR(GENERIC); - return HUF_decompress1X2_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -} - -size_t HUF_decompress1X2_DCtx_wksp(HUF_DTable* DCtx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize) -{ - const BYTE* ip = (const BYTE*) cSrc; - - size_t const hSize = HUF_readDTableX2_wksp(DCtx, cSrc, cSrcSize, - workSpace, wkspSize); - if (HUF_isError(hSize)) return hSize; - if (hSize >= cSrcSize) return ERROR(srcSize_wrong); - ip += hSize; cSrcSize -= hSize; - - return HUF_decompress1X2_usingDTable_internal(dst, dstSize, ip, cSrcSize, DCtx, /* bmi2 */ 0); -} - - -size_t HUF_decompress4X2_usingDTable( - void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - DTableDesc dtd = HUF_getDTableDesc(DTable); - if (dtd.tableType != 1) return ERROR(GENERIC); - return HUF_decompress4X2_usingDTable_internal(dst, dstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -} - -static size_t HUF_decompress4X2_DCtx_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize, int bmi2) -{ - const BYTE* ip = (const BYTE*) cSrc; - - size_t hSize = HUF_readDTableX2_wksp(dctx, cSrc, cSrcSize, - workSpace, wkspSize); - if (HUF_isError(hSize)) return hSize; - if (hSize >= cSrcSize) return ERROR(srcSize_wrong); - ip += hSize; cSrcSize -= hSize; - - return HUF_decompress4X2_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx, bmi2); -} - -size_t HUF_decompress4X2_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize) -{ - return HUF_decompress4X2_DCtx_wksp_bmi2(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize, /* bmi2 */ 0); -} - - -#endif /* HUF_FORCE_DECOMPRESS_X1 */ - - -/* ***********************************/ -/* Universal decompression selectors */ -/* ***********************************/ - -size_t HUF_decompress1X_usingDTable(void* dst, size_t maxDstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - DTableDesc const dtd = HUF_getDTableDesc(DTable); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)dtd; - assert(dtd.tableType == 0); - return HUF_decompress1X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)dtd; - assert(dtd.tableType == 1); - return HUF_decompress1X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -#else - return dtd.tableType ? HUF_decompress1X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0) : - HUF_decompress1X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -#endif -} - -size_t HUF_decompress4X_usingDTable(void* dst, size_t maxDstSize, - const void* cSrc, size_t cSrcSize, - const HUF_DTable* DTable) -{ - DTableDesc const dtd = HUF_getDTableDesc(DTable); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)dtd; - assert(dtd.tableType == 0); - return HUF_decompress4X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)dtd; - assert(dtd.tableType == 1); - return HUF_decompress4X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -#else - return dtd.tableType ? HUF_decompress4X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0) : - HUF_decompress4X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, /* bmi2 */ 0); -#endif -} - - -#if !defined(HUF_FORCE_DECOMPRESS_X1) && !defined(HUF_FORCE_DECOMPRESS_X2) -typedef struct { U32 tableTime; U32 decode256Time; } algo_time_t; -static const algo_time_t algoTime[16 /* Quantization */][3 /* single, double, quad */] = -{ - /* single, double, quad */ - {{0,0}, {1,1}, {2,2}}, /* Q==0 : impossible */ - {{0,0}, {1,1}, {2,2}}, /* Q==1 : impossible */ - {{ 38,130}, {1313, 74}, {2151, 38}}, /* Q == 2 : 12-18% */ - {{ 448,128}, {1353, 74}, {2238, 41}}, /* Q == 3 : 18-25% */ - {{ 556,128}, {1353, 74}, {2238, 47}}, /* Q == 4 : 25-32% */ - {{ 714,128}, {1418, 74}, {2436, 53}}, /* Q == 5 : 32-38% */ - {{ 883,128}, {1437, 74}, {2464, 61}}, /* Q == 6 : 38-44% */ - {{ 897,128}, {1515, 75}, {2622, 68}}, /* Q == 7 : 44-50% */ - {{ 926,128}, {1613, 75}, {2730, 75}}, /* Q == 8 : 50-56% */ - {{ 947,128}, {1729, 77}, {3359, 77}}, /* Q == 9 : 56-62% */ - {{1107,128}, {2083, 81}, {4006, 84}}, /* Q ==10 : 62-69% */ - {{1177,128}, {2379, 87}, {4785, 88}}, /* Q ==11 : 69-75% */ - {{1242,128}, {2415, 93}, {5155, 84}}, /* Q ==12 : 75-81% */ - {{1349,128}, {2644,106}, {5260,106}}, /* Q ==13 : 81-87% */ - {{1455,128}, {2422,124}, {4174,124}}, /* Q ==14 : 87-93% */ - {{ 722,128}, {1891,145}, {1936,146}}, /* Q ==15 : 93-99% */ -}; -#endif - -/** HUF_selectDecoder() : - * Tells which decoder is likely to decode faster, - * based on a set of pre-computed metrics. - * @return : 0==HUF_decompress4X1, 1==HUF_decompress4X2 . - * Assumption : 0 < dstSize <= 128 KB */ -U32 HUF_selectDecoder (size_t dstSize, size_t cSrcSize) -{ - assert(dstSize > 0); - assert(dstSize <= 128*1024); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)dstSize; - (void)cSrcSize; - return 0; -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)dstSize; - (void)cSrcSize; - return 1; -#else - /* decoder timing evaluation */ - { U32 const Q = (cSrcSize >= dstSize) ? 15 : (U32)(cSrcSize * 16 / dstSize); /* Q < 16 */ - U32 const D256 = (U32)(dstSize >> 8); - U32 const DTime0 = algoTime[Q][0].tableTime + (algoTime[Q][0].decode256Time * D256); - U32 DTime1 = algoTime[Q][1].tableTime + (algoTime[Q][1].decode256Time * D256); - DTime1 += DTime1 >> 3; /* advantage to algorithm using less memory, to reduce cache eviction */ - return DTime1 < DTime0; - } -#endif -} - - -size_t HUF_decompress4X_hufOnly_wksp(HUF_DTable* dctx, void* dst, - size_t dstSize, const void* cSrc, - size_t cSrcSize, void* workSpace, - size_t wkspSize) -{ - /* validation checks */ - if (dstSize == 0) return ERROR(dstSize_tooSmall); - if (cSrcSize == 0) return ERROR(corruption_detected); - - { U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)algoNb; - assert(algoNb == 0); - return HUF_decompress4X1_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)algoNb; - assert(algoNb == 1); - return HUF_decompress4X2_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize); -#else - return algoNb ? HUF_decompress4X2_DCtx_wksp(dctx, dst, dstSize, cSrc, - cSrcSize, workSpace, wkspSize): - HUF_decompress4X1_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize); -#endif - } -} - -size_t HUF_decompress1X_DCtx_wksp(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize, - void* workSpace, size_t wkspSize) -{ - /* validation checks */ - if (dstSize == 0) return ERROR(dstSize_tooSmall); - if (cSrcSize > dstSize) return ERROR(corruption_detected); /* invalid */ - if (cSrcSize == dstSize) { ZSTD_memcpy(dst, cSrc, dstSize); return dstSize; } /* not compressed */ - if (cSrcSize == 1) { ZSTD_memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; } /* RLE */ - - { U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)algoNb; - assert(algoNb == 0); - return HUF_decompress1X1_DCtx_wksp(dctx, dst, dstSize, cSrc, - cSrcSize, workSpace, wkspSize); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)algoNb; - assert(algoNb == 1); - return HUF_decompress1X2_DCtx_wksp(dctx, dst, dstSize, cSrc, - cSrcSize, workSpace, wkspSize); -#else - return algoNb ? HUF_decompress1X2_DCtx_wksp(dctx, dst, dstSize, cSrc, - cSrcSize, workSpace, wkspSize): - HUF_decompress1X1_DCtx_wksp(dctx, dst, dstSize, cSrc, - cSrcSize, workSpace, wkspSize); -#endif - } -} - - -size_t HUF_decompress1X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2) -{ - DTableDesc const dtd = HUF_getDTableDesc(DTable); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)dtd; - assert(dtd.tableType == 0); - return HUF_decompress1X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)dtd; - assert(dtd.tableType == 1); - return HUF_decompress1X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2); -#else - return dtd.tableType ? HUF_decompress1X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2) : - HUF_decompress1X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2); -#endif -} - -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress1X1_DCtx_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2) -{ - const BYTE* ip = (const BYTE*) cSrc; - - size_t const hSize = HUF_readDTableX1_wksp_bmi2(dctx, cSrc, cSrcSize, workSpace, wkspSize, bmi2); - if (HUF_isError(hSize)) return hSize; - if (hSize >= cSrcSize) return ERROR(srcSize_wrong); - ip += hSize; cSrcSize -= hSize; - - return HUF_decompress1X1_usingDTable_internal(dst, dstSize, ip, cSrcSize, dctx, bmi2); -} -#endif - -size_t HUF_decompress4X_usingDTable_bmi2(void* dst, size_t maxDstSize, const void* cSrc, size_t cSrcSize, const HUF_DTable* DTable, int bmi2) -{ - DTableDesc const dtd = HUF_getDTableDesc(DTable); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)dtd; - assert(dtd.tableType == 0); - return HUF_decompress4X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)dtd; - assert(dtd.tableType == 1); - return HUF_decompress4X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2); -#else - return dtd.tableType ? HUF_decompress4X2_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2) : - HUF_decompress4X1_usingDTable_internal(dst, maxDstSize, cSrc, cSrcSize, DTable, bmi2); -#endif -} - -size_t HUF_decompress4X_hufOnly_wksp_bmi2(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize, void* workSpace, size_t wkspSize, int bmi2) -{ - /* validation checks */ - if (dstSize == 0) return ERROR(dstSize_tooSmall); - if (cSrcSize == 0) return ERROR(corruption_detected); - - { U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)algoNb; - assert(algoNb == 0); - return HUF_decompress4X1_DCtx_wksp_bmi2(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize, bmi2); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)algoNb; - assert(algoNb == 1); - return HUF_decompress4X2_DCtx_wksp_bmi2(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize, bmi2); -#else - return algoNb ? HUF_decompress4X2_DCtx_wksp_bmi2(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize, bmi2) : - HUF_decompress4X1_DCtx_wksp_bmi2(dctx, dst, dstSize, cSrc, cSrcSize, workSpace, wkspSize, bmi2); -#endif - } -} - -#ifndef ZSTD_NO_UNUSED_FUNCTIONS -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_readDTableX1(HUF_DTable* DTable, const void* src, size_t srcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_readDTableX1_wksp(DTable, src, srcSize, - workSpace, sizeof(workSpace)); -} - -size_t HUF_decompress1X1_DCtx(HUF_DTable* DCtx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_decompress1X1_DCtx_wksp(DCtx, dst, dstSize, cSrc, cSrcSize, - workSpace, sizeof(workSpace)); -} - -size_t HUF_decompress1X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - HUF_CREATE_STATIC_DTABLEX1(DTable, HUF_TABLELOG_MAX); - return HUF_decompress1X1_DCtx (DTable, dst, dstSize, cSrc, cSrcSize); -} -#endif - -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_readDTableX2(HUF_DTable* DTable, const void* src, size_t srcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_readDTableX2_wksp(DTable, src, srcSize, - workSpace, sizeof(workSpace)); -} - -size_t HUF_decompress1X2_DCtx(HUF_DTable* DCtx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_decompress1X2_DCtx_wksp(DCtx, dst, dstSize, cSrc, cSrcSize, - workSpace, sizeof(workSpace)); -} - -size_t HUF_decompress1X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - HUF_CREATE_STATIC_DTABLEX2(DTable, HUF_TABLELOG_MAX); - return HUF_decompress1X2_DCtx(DTable, dst, dstSize, cSrc, cSrcSize); -} -#endif - -#ifndef HUF_FORCE_DECOMPRESS_X2 -size_t HUF_decompress4X1_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_decompress4X1_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, - workSpace, sizeof(workSpace)); -} -size_t HUF_decompress4X1 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - HUF_CREATE_STATIC_DTABLEX1(DTable, HUF_TABLELOG_MAX); - return HUF_decompress4X1_DCtx(DTable, dst, dstSize, cSrc, cSrcSize); -} -#endif - -#ifndef HUF_FORCE_DECOMPRESS_X1 -size_t HUF_decompress4X2_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_decompress4X2_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, - workSpace, sizeof(workSpace)); -} - -size_t HUF_decompress4X2 (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - HUF_CREATE_STATIC_DTABLEX2(DTable, HUF_TABLELOG_MAX); - return HUF_decompress4X2_DCtx(DTable, dst, dstSize, cSrc, cSrcSize); -} -#endif - -typedef size_t (*decompressionAlgo)(void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize); - -size_t HUF_decompress (void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ -#if !defined(HUF_FORCE_DECOMPRESS_X1) && !defined(HUF_FORCE_DECOMPRESS_X2) - static const decompressionAlgo decompress[2] = { HUF_decompress4X1, HUF_decompress4X2 }; -#endif - - /* validation checks */ - if (dstSize == 0) return ERROR(dstSize_tooSmall); - if (cSrcSize > dstSize) return ERROR(corruption_detected); /* invalid */ - if (cSrcSize == dstSize) { ZSTD_memcpy(dst, cSrc, dstSize); return dstSize; } /* not compressed */ - if (cSrcSize == 1) { ZSTD_memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; } /* RLE */ - - { U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)algoNb; - assert(algoNb == 0); - return HUF_decompress4X1(dst, dstSize, cSrc, cSrcSize); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)algoNb; - assert(algoNb == 1); - return HUF_decompress4X2(dst, dstSize, cSrc, cSrcSize); -#else - return decompress[algoNb](dst, dstSize, cSrc, cSrcSize); -#endif - } -} - -size_t HUF_decompress4X_DCtx (HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - /* validation checks */ - if (dstSize == 0) return ERROR(dstSize_tooSmall); - if (cSrcSize > dstSize) return ERROR(corruption_detected); /* invalid */ - if (cSrcSize == dstSize) { ZSTD_memcpy(dst, cSrc, dstSize); return dstSize; } /* not compressed */ - if (cSrcSize == 1) { ZSTD_memset(dst, *(const BYTE*)cSrc, dstSize); return dstSize; } /* RLE */ - - { U32 const algoNb = HUF_selectDecoder(dstSize, cSrcSize); -#if defined(HUF_FORCE_DECOMPRESS_X1) - (void)algoNb; - assert(algoNb == 0); - return HUF_decompress4X1_DCtx(dctx, dst, dstSize, cSrc, cSrcSize); -#elif defined(HUF_FORCE_DECOMPRESS_X2) - (void)algoNb; - assert(algoNb == 1); - return HUF_decompress4X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize); -#else - return algoNb ? HUF_decompress4X2_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) : - HUF_decompress4X1_DCtx(dctx, dst, dstSize, cSrc, cSrcSize) ; -#endif - } -} - -size_t HUF_decompress4X_hufOnly(HUF_DTable* dctx, void* dst, size_t dstSize, const void* cSrc, size_t cSrcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_decompress4X_hufOnly_wksp(dctx, dst, dstSize, cSrc, cSrcSize, - workSpace, sizeof(workSpace)); -} - -size_t HUF_decompress1X_DCtx(HUF_DTable* dctx, void* dst, size_t dstSize, - const void* cSrc, size_t cSrcSize) -{ - U32 workSpace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; - return HUF_decompress1X_DCtx_wksp(dctx, dst, dstSize, cSrc, cSrcSize, - workSpace, sizeof(workSpace)); -} -#endif -/**** ended inlining decompress/huf_decompress.c ****/ -/**** start inlining decompress/zstd_ddict.c ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* zstd_ddict.c : - * concentrates all logic that needs to know the internals of ZSTD_DDict object */ - -/*-******************************************************* -* Dependencies -*********************************************************/ -/**** skipping file: ../common/zstd_deps.h ****/ -/**** start inlining ../common/cpu.h ****/ -/* - * Copyright (c) 2018-2021, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_COMMON_CPU_H -#define ZSTD_COMMON_CPU_H - -/** - * Implementation taken from folly/CpuId.h - * https://github.com/facebook/folly/blob/master/folly/CpuId.h - */ - -/**** skipping file: mem.h ****/ - -#ifdef _MSC_VER -#include -#endif - -typedef struct { - U32 f1c; - U32 f1d; - U32 f7b; - U32 f7c; -} ZSTD_cpuid_t; - -MEM_STATIC ZSTD_cpuid_t ZSTD_cpuid(void) { - U32 f1c = 0; - U32 f1d = 0; - U32 f7b = 0; - U32 f7c = 0; -#if defined(_MSC_VER) && (defined(_M_X64) || defined(_M_IX86)) - int reg[4]; - __cpuid((int*)reg, 0); - { - int const n = reg[0]; - if (n >= 1) { - __cpuid((int*)reg, 1); - f1c = (U32)reg[2]; - f1d = (U32)reg[3]; - } - if (n >= 7) { - __cpuidex((int*)reg, 7, 0); - f7b = (U32)reg[1]; - f7c = (U32)reg[2]; - } - } -#elif defined(__i386__) && defined(__PIC__) && !defined(__clang__) && defined(__GNUC__) - /* The following block like the normal cpuid branch below, but gcc - * reserves ebx for use of its pic register so we must specially - * handle the save and restore to avoid clobbering the register - */ - U32 n; - __asm__( - "pushl %%ebx\n\t" - "cpuid\n\t" - "popl %%ebx\n\t" - : "=a"(n) - : "a"(0) - : "ecx", "edx"); - if (n >= 1) { - U32 f1a; - __asm__( - "pushl %%ebx\n\t" - "cpuid\n\t" - "popl %%ebx\n\t" - : "=a"(f1a), "=c"(f1c), "=d"(f1d) - : "a"(1)); - } - if (n >= 7) { - __asm__( - "pushl %%ebx\n\t" - "cpuid\n\t" - "movl %%ebx, %%eax\n\t" - "popl %%ebx" - : "=a"(f7b), "=c"(f7c) - : "a"(7), "c"(0) - : "edx"); - } -#elif defined(__x86_64__) || defined(_M_X64) || defined(__i386__) - U32 n; - __asm__("cpuid" : "=a"(n) : "a"(0) : "ebx", "ecx", "edx"); - if (n >= 1) { - U32 f1a; - __asm__("cpuid" : "=a"(f1a), "=c"(f1c), "=d"(f1d) : "a"(1) : "ebx"); - } - if (n >= 7) { - U32 f7a; - __asm__("cpuid" - : "=a"(f7a), "=b"(f7b), "=c"(f7c) - : "a"(7), "c"(0) - : "edx"); - } -#endif - { - ZSTD_cpuid_t cpuid; - cpuid.f1c = f1c; - cpuid.f1d = f1d; - cpuid.f7b = f7b; - cpuid.f7c = f7c; - return cpuid; - } -} - -#define X(name, r, bit) \ - MEM_STATIC int ZSTD_cpuid_##name(ZSTD_cpuid_t const cpuid) { \ - return ((cpuid.r) & (1U << bit)) != 0; \ - } - -/* cpuid(1): Processor Info and Feature Bits. */ -#define C(name, bit) X(name, f1c, bit) - C(sse3, 0) - C(pclmuldq, 1) - C(dtes64, 2) - C(monitor, 3) - C(dscpl, 4) - C(vmx, 5) - C(smx, 6) - C(eist, 7) - C(tm2, 8) - C(ssse3, 9) - C(cnxtid, 10) - C(fma, 12) - C(cx16, 13) - C(xtpr, 14) - C(pdcm, 15) - C(pcid, 17) - C(dca, 18) - C(sse41, 19) - C(sse42, 20) - C(x2apic, 21) - C(movbe, 22) - C(popcnt, 23) - C(tscdeadline, 24) - C(aes, 25) - C(xsave, 26) - C(osxsave, 27) - C(avx, 28) - C(f16c, 29) - C(rdrand, 30) -#undef C -#define D(name, bit) X(name, f1d, bit) - D(fpu, 0) - D(vme, 1) - D(de, 2) - D(pse, 3) - D(tsc, 4) - D(msr, 5) - D(pae, 6) - D(mce, 7) - D(cx8, 8) - D(apic, 9) - D(sep, 11) - D(mtrr, 12) - D(pge, 13) - D(mca, 14) - D(cmov, 15) - D(pat, 16) - D(pse36, 17) - D(psn, 18) - D(clfsh, 19) - D(ds, 21) - D(acpi, 22) - D(mmx, 23) - D(fxsr, 24) - D(sse, 25) - D(sse2, 26) - D(ss, 27) - D(htt, 28) - D(tm, 29) - D(pbe, 31) -#undef D - -/* cpuid(7): Extended Features. */ -#define B(name, bit) X(name, f7b, bit) - B(bmi1, 3) - B(hle, 4) - B(avx2, 5) - B(smep, 7) - B(bmi2, 8) - B(erms, 9) - B(invpcid, 10) - B(rtm, 11) - B(mpx, 14) - B(avx512f, 16) - B(avx512dq, 17) - B(rdseed, 18) - B(adx, 19) - B(smap, 20) - B(avx512ifma, 21) - B(pcommit, 22) - B(clflushopt, 23) - B(clwb, 24) - B(avx512pf, 26) - B(avx512er, 27) - B(avx512cd, 28) - B(sha, 29) - B(avx512bw, 30) - B(avx512vl, 31) -#undef B -#define C(name, bit) X(name, f7c, bit) - C(prefetchwt1, 0) - C(avx512vbmi, 1) -#undef C - -#undef X - -#endif /* ZSTD_COMMON_CPU_H */ -/**** ended inlining ../common/cpu.h ****/ -/**** skipping file: ../common/mem.h ****/ -#define FSE_STATIC_LINKING_ONLY -/**** skipping file: ../common/fse.h ****/ -#define HUF_STATIC_LINKING_ONLY -/**** skipping file: ../common/huf.h ****/ -/**** start inlining zstd_decompress_internal.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - - -/* zstd_decompress_internal: - * objects and definitions shared within lib/decompress modules */ - - #ifndef ZSTD_DECOMPRESS_INTERNAL_H - #define ZSTD_DECOMPRESS_INTERNAL_H - - -/*-******************************************************* - * Dependencies - *********************************************************/ -/**** skipping file: ../common/mem.h ****/ -/**** skipping file: ../common/zstd_internal.h ****/ -/**** start inlining ../common/zstd_trace.h ****/ -/* - * Copyright (c) 2016-2021, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_TRACE_H -#define ZSTD_TRACE_H - -#if defined (__cplusplus) -extern "C" { -#endif - -#include - -/* weak symbol support */ -#if !defined(ZSTD_HAVE_WEAK_SYMBOLS) && defined(__GNUC__) && \ - !defined(__APPLE__) && !defined(_WIN32) && !defined(__MINGW32__) && \ - !defined(__CYGWIN__) -# define ZSTD_HAVE_WEAK_SYMBOLS 1 -#else -# define ZSTD_HAVE_WEAK_SYMBOLS 0 -#endif -#if ZSTD_HAVE_WEAK_SYMBOLS -# define ZSTD_WEAK_ATTR __attribute__((__weak__)) -#else -# define ZSTD_WEAK_ATTR -#endif - -/* Only enable tracing when weak symbols are available. */ -#ifndef ZSTD_TRACE -# define ZSTD_TRACE ZSTD_HAVE_WEAK_SYMBOLS -#endif - -#if ZSTD_TRACE - -struct ZSTD_CCtx_s; -struct ZSTD_DCtx_s; -struct ZSTD_CCtx_params_s; - -typedef struct { - /** - * ZSTD_VERSION_NUMBER - * - * This is guaranteed to be the first member of ZSTD_trace. - * Otherwise, this struct is not stable between versions. If - * the version number does not match your expectation, you - * should not interpret the rest of the struct. - */ - unsigned version; - /** - * Non-zero if streaming (de)compression is used. - */ - unsigned streaming; - /** - * The dictionary ID. - */ - unsigned dictionaryID; - /** - * Is the dictionary cold? - * Only set on decompression. - */ - unsigned dictionaryIsCold; - /** - * The dictionary size or zero if no dictionary. - */ - size_t dictionarySize; - /** - * The uncompressed size of the data. - */ - size_t uncompressedSize; - /** - * The compressed size of the data. - */ - size_t compressedSize; - /** - * The fully resolved CCtx parameters (NULL on decompression). - */ - struct ZSTD_CCtx_params_s const* params; - /** - * The ZSTD_CCtx pointer (NULL on decompression). - */ - struct ZSTD_CCtx_s const* cctx; - /** - * The ZSTD_DCtx pointer (NULL on compression). - */ - struct ZSTD_DCtx_s const* dctx; -} ZSTD_Trace; - -/** - * A tracing context. It must be 0 when tracing is disabled. - * Otherwise, any non-zero value returned by a tracing begin() - * function is presented to any subsequent calls to end(). - * - * Any non-zero value is treated as tracing is enabled and not - * interpreted by the library. - * - * Two possible uses are: - * * A timestamp for when the begin() function was called. - * * A unique key identifying the (de)compression, like the - * address of the [dc]ctx pointer if you need to track - * more information than just a timestamp. - */ -typedef unsigned long long ZSTD_TraceCtx; - -/** - * Trace the beginning of a compression call. - * @param cctx The dctx pointer for the compression. - * It can be used as a key to map begin() to end(). - * @returns Non-zero if tracing is enabled. The return value is - * passed to ZSTD_trace_compress_end(). - */ -ZSTD_TraceCtx ZSTD_trace_compress_begin(struct ZSTD_CCtx_s const* cctx); - -/** - * Trace the end of a compression call. - * @param ctx The return value of ZSTD_trace_compress_begin(). - * @param trace The zstd tracing info. - */ -void ZSTD_trace_compress_end( - ZSTD_TraceCtx ctx, - ZSTD_Trace const* trace); - -/** - * Trace the beginning of a decompression call. - * @param dctx The dctx pointer for the decompression. - * It can be used as a key to map begin() to end(). - * @returns Non-zero if tracing is enabled. The return value is - * passed to ZSTD_trace_compress_end(). - */ -ZSTD_TraceCtx ZSTD_trace_decompress_begin(struct ZSTD_DCtx_s const* dctx); - -/** - * Trace the end of a decompression call. - * @param ctx The return value of ZSTD_trace_decompress_begin(). - * @param trace The zstd tracing info. - */ -void ZSTD_trace_decompress_end( - ZSTD_TraceCtx ctx, - ZSTD_Trace const* trace); - -#endif /* ZSTD_TRACE */ - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_TRACE_H */ -/**** ended inlining ../common/zstd_trace.h ****/ - - - -/*-******************************************************* - * Constants - *********************************************************/ -static UNUSED_ATTR const U32 LL_base[MaxLL+1] = { - 0, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 18, 20, 22, 24, 28, 32, 40, - 48, 64, 0x80, 0x100, 0x200, 0x400, 0x800, 0x1000, - 0x2000, 0x4000, 0x8000, 0x10000 }; - -static UNUSED_ATTR const U32 OF_base[MaxOff+1] = { - 0, 1, 1, 5, 0xD, 0x1D, 0x3D, 0x7D, - 0xFD, 0x1FD, 0x3FD, 0x7FD, 0xFFD, 0x1FFD, 0x3FFD, 0x7FFD, - 0xFFFD, 0x1FFFD, 0x3FFFD, 0x7FFFD, 0xFFFFD, 0x1FFFFD, 0x3FFFFD, 0x7FFFFD, - 0xFFFFFD, 0x1FFFFFD, 0x3FFFFFD, 0x7FFFFFD, 0xFFFFFFD, 0x1FFFFFFD, 0x3FFFFFFD, 0x7FFFFFFD }; - -static UNUSED_ATTR const U32 OF_bits[MaxOff+1] = { - 0, 1, 2, 3, 4, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, - 16, 17, 18, 19, 20, 21, 22, 23, - 24, 25, 26, 27, 28, 29, 30, 31 }; - -static UNUSED_ATTR const U32 ML_base[MaxML+1] = { - 3, 4, 5, 6, 7, 8, 9, 10, - 11, 12, 13, 14, 15, 16, 17, 18, - 19, 20, 21, 22, 23, 24, 25, 26, - 27, 28, 29, 30, 31, 32, 33, 34, - 35, 37, 39, 41, 43, 47, 51, 59, - 67, 83, 99, 0x83, 0x103, 0x203, 0x403, 0x803, - 0x1003, 0x2003, 0x4003, 0x8003, 0x10003 }; - - -/*-******************************************************* - * Decompression types - *********************************************************/ - typedef struct { - U32 fastMode; - U32 tableLog; - } ZSTD_seqSymbol_header; - - typedef struct { - U16 nextState; - BYTE nbAdditionalBits; - BYTE nbBits; - U32 baseValue; - } ZSTD_seqSymbol; - - #define SEQSYMBOL_TABLE_SIZE(log) (1 + (1 << (log))) - -#define ZSTD_BUILD_FSE_TABLE_WKSP_SIZE (sizeof(S16) * (MaxSeq + 1) + (1u << MaxFSELog) + sizeof(U64)) -#define ZSTD_BUILD_FSE_TABLE_WKSP_SIZE_U32 ((ZSTD_BUILD_FSE_TABLE_WKSP_SIZE + sizeof(U32) - 1) / sizeof(U32)) - -typedef struct { - ZSTD_seqSymbol LLTable[SEQSYMBOL_TABLE_SIZE(LLFSELog)]; /* Note : Space reserved for FSE Tables */ - ZSTD_seqSymbol OFTable[SEQSYMBOL_TABLE_SIZE(OffFSELog)]; /* is also used as temporary workspace while building hufTable during DDict creation */ - ZSTD_seqSymbol MLTable[SEQSYMBOL_TABLE_SIZE(MLFSELog)]; /* and therefore must be at least HUF_DECOMPRESS_WORKSPACE_SIZE large */ - HUF_DTable hufTable[HUF_DTABLE_SIZE(HufLog)]; /* can accommodate HUF_decompress4X */ - U32 rep[ZSTD_REP_NUM]; - U32 workspace[ZSTD_BUILD_FSE_TABLE_WKSP_SIZE_U32]; -} ZSTD_entropyDTables_t; - -typedef enum { ZSTDds_getFrameHeaderSize, ZSTDds_decodeFrameHeader, - ZSTDds_decodeBlockHeader, ZSTDds_decompressBlock, - ZSTDds_decompressLastBlock, ZSTDds_checkChecksum, - ZSTDds_decodeSkippableHeader, ZSTDds_skipFrame } ZSTD_dStage; - -typedef enum { zdss_init=0, zdss_loadHeader, - zdss_read, zdss_load, zdss_flush } ZSTD_dStreamStage; - -typedef enum { - ZSTD_use_indefinitely = -1, /* Use the dictionary indefinitely */ - ZSTD_dont_use = 0, /* Do not use the dictionary (if one exists free it) */ - ZSTD_use_once = 1 /* Use the dictionary once and set to ZSTD_dont_use */ -} ZSTD_dictUses_e; - -/* Hashset for storing references to multiple ZSTD_DDict within ZSTD_DCtx */ -typedef struct { - const ZSTD_DDict** ddictPtrTable; - size_t ddictPtrTableSize; - size_t ddictPtrCount; -} ZSTD_DDictHashSet; - -struct ZSTD_DCtx_s -{ - const ZSTD_seqSymbol* LLTptr; - const ZSTD_seqSymbol* MLTptr; - const ZSTD_seqSymbol* OFTptr; - const HUF_DTable* HUFptr; - ZSTD_entropyDTables_t entropy; - U32 workspace[HUF_DECOMPRESS_WORKSPACE_SIZE_U32]; /* space needed when building huffman tables */ - const void* previousDstEnd; /* detect continuity */ - const void* prefixStart; /* start of current segment */ - const void* virtualStart; /* virtual start of previous segment if it was just before current one */ - const void* dictEnd; /* end of previous segment */ - size_t expected; - ZSTD_frameHeader fParams; - U64 processedCSize; - U64 decodedSize; - blockType_e bType; /* used in ZSTD_decompressContinue(), store blockType between block header decoding and block decompression stages */ - ZSTD_dStage stage; - U32 litEntropy; - U32 fseEntropy; - XXH64_state_t xxhState; - size_t headerSize; - ZSTD_format_e format; - ZSTD_forceIgnoreChecksum_e forceIgnoreChecksum; /* User specified: if == 1, will ignore checksums in compressed frame. Default == 0 */ - U32 validateChecksum; /* if == 1, will validate checksum. Is == 1 if (fParams.checksumFlag == 1) and (forceIgnoreChecksum == 0). */ - const BYTE* litPtr; - ZSTD_customMem customMem; - size_t litSize; - size_t rleSize; - size_t staticSize; - int bmi2; /* == 1 if the CPU supports BMI2 and 0 otherwise. CPU support is determined dynamically once per context lifetime. */ - - /* dictionary */ - ZSTD_DDict* ddictLocal; - const ZSTD_DDict* ddict; /* set by ZSTD_initDStream_usingDDict(), or ZSTD_DCtx_refDDict() */ - U32 dictID; - int ddictIsCold; /* if == 1 : dictionary is "new" for working context, and presumed "cold" (not in cpu cache) */ - ZSTD_dictUses_e dictUses; - ZSTD_DDictHashSet* ddictSet; /* Hash set for multiple ddicts */ - ZSTD_refMultipleDDicts_e refMultipleDDicts; /* User specified: if == 1, will allow references to multiple DDicts. Default == 0 (disabled) */ - - /* streaming */ - ZSTD_dStreamStage streamStage; - char* inBuff; - size_t inBuffSize; - size_t inPos; - size_t maxWindowSize; - char* outBuff; - size_t outBuffSize; - size_t outStart; - size_t outEnd; - size_t lhSize; - void* legacyContext; - U32 previousLegacyVersion; - U32 legacyVersion; - U32 hostageByte; - int noForwardProgress; - ZSTD_bufferMode_e outBufferMode; - ZSTD_outBuffer expectedOutBuffer; - - /* workspace */ - BYTE litBuffer[ZSTD_BLOCKSIZE_MAX + WILDCOPY_OVERLENGTH]; - BYTE headerBuffer[ZSTD_FRAMEHEADERSIZE_MAX]; - - size_t oversizedDuration; - -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - void const* dictContentBeginForFuzzing; - void const* dictContentEndForFuzzing; -#endif - - /* Tracing */ -#if ZSTD_TRACE - ZSTD_TraceCtx traceCtx; -#endif -}; /* typedef'd to ZSTD_DCtx within "zstd.h" */ - - -/*-******************************************************* - * Shared internal functions - *********************************************************/ - -/*! ZSTD_loadDEntropy() : - * dict : must point at beginning of a valid zstd dictionary. - * @return : size of dictionary header (size of magic number + dict ID + entropy tables) */ -size_t ZSTD_loadDEntropy(ZSTD_entropyDTables_t* entropy, - const void* const dict, size_t const dictSize); - -/*! ZSTD_checkContinuity() : - * check if next `dst` follows previous position, where decompression ended. - * If yes, do nothing (continue on current segment). - * If not, classify previous segment as "external dictionary", and start a new segment. - * This function cannot fail. */ -void ZSTD_checkContinuity(ZSTD_DCtx* dctx, const void* dst, size_t dstSize); - - -#endif /* ZSTD_DECOMPRESS_INTERNAL_H */ -/**** ended inlining zstd_decompress_internal.h ****/ -/**** start inlining zstd_ddict.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - - -#ifndef ZSTD_DDICT_H -#define ZSTD_DDICT_H - -/*-******************************************************* - * Dependencies - *********************************************************/ -/**** skipping file: ../common/zstd_deps.h ****/ -/**** skipping file: ../zstd.h ****/ - - -/*-******************************************************* - * Interface - *********************************************************/ - -/* note: several prototypes are already published in `zstd.h` : - * ZSTD_createDDict() - * ZSTD_createDDict_byReference() - * ZSTD_createDDict_advanced() - * ZSTD_freeDDict() - * ZSTD_initStaticDDict() - * ZSTD_sizeof_DDict() - * ZSTD_estimateDDictSize() - * ZSTD_getDictID_fromDict() - */ - -const void* ZSTD_DDict_dictContent(const ZSTD_DDict* ddict); -size_t ZSTD_DDict_dictSize(const ZSTD_DDict* ddict); - -void ZSTD_copyDDictParameters(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict); - - - -#endif /* ZSTD_DDICT_H */ -/**** ended inlining zstd_ddict.h ****/ - -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1) -/**** start inlining ../legacy/zstd_legacy.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_LEGACY_H -#define ZSTD_LEGACY_H - -#if defined (__cplusplus) -extern "C" { -#endif - -/* ************************************* -* Includes -***************************************/ -/**** skipping file: ../common/mem.h ****/ -/**** skipping file: ../common/error_private.h ****/ -/**** skipping file: ../common/zstd_internal.h ****/ - -#if !defined (ZSTD_LEGACY_SUPPORT) || (ZSTD_LEGACY_SUPPORT == 0) -# undef ZSTD_LEGACY_SUPPORT -# define ZSTD_LEGACY_SUPPORT 8 -#endif - -#if (ZSTD_LEGACY_SUPPORT <= 1) -/**** start inlining zstd_v01.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_V01_H_28739879432 -#define ZSTD_V01_H_28739879432 - -#if defined (__cplusplus) -extern "C" { -#endif - -/* ************************************* -* Includes -***************************************/ -#include /* size_t */ - - -/* ************************************* -* Simple one-step function -***************************************/ -/** -ZSTDv01_decompress() : decompress ZSTD frames compliant with v0.1.x format - compressedSize : is the exact source size - maxOriginalSize : is the size of the 'dst' buffer, which must be already allocated. - It must be equal or larger than originalSize, otherwise decompression will fail. - return : the number of bytes decompressed into destination buffer (originalSize) - or an errorCode if it fails (which can be tested using ZSTDv01_isError()) -*/ -size_t ZSTDv01_decompress( void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - - /** - ZSTDv01_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.1.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. - */ -void ZSTDv01_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - -/** -ZSTDv01_isError() : tells if the result of ZSTDv01_decompress() is an error -*/ -unsigned ZSTDv01_isError(size_t code); - - -/* ************************************* -* Advanced functions -***************************************/ -typedef struct ZSTDv01_Dctx_s ZSTDv01_Dctx; -ZSTDv01_Dctx* ZSTDv01_createDCtx(void); -size_t ZSTDv01_freeDCtx(ZSTDv01_Dctx* dctx); - -size_t ZSTDv01_decompressDCtx(void* ctx, - void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - -/* ************************************* -* Streaming functions -***************************************/ -size_t ZSTDv01_resetDCtx(ZSTDv01_Dctx* dctx); - -size_t ZSTDv01_nextSrcSizeToDecompress(ZSTDv01_Dctx* dctx); -size_t ZSTDv01_decompressContinue(ZSTDv01_Dctx* dctx, void* dst, size_t maxDstSize, const void* src, size_t srcSize); -/** - Use above functions alternatively. - ZSTD_nextSrcSizeToDecompress() tells how much bytes to provide as 'srcSize' to ZSTD_decompressContinue(). - ZSTD_decompressContinue() will use previous data blocks to improve compression if they are located prior to current block. - Result is the number of bytes regenerated within 'dst'. - It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some header. -*/ - -/* ************************************* -* Prefix - version detection -***************************************/ -#define ZSTDv01_magicNumber 0xFD2FB51E /* Big Endian version */ -#define ZSTDv01_magicNumberLE 0x1EB52FFD /* Little Endian version */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_V01_H_28739879432 */ -/**** ended inlining zstd_v01.h ****/ -#endif -#if (ZSTD_LEGACY_SUPPORT <= 2) -/**** start inlining zstd_v02.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_V02_H_4174539423 -#define ZSTD_V02_H_4174539423 - -#if defined (__cplusplus) -extern "C" { -#endif - -/* ************************************* -* Includes -***************************************/ -#include /* size_t */ - - -/* ************************************* -* Simple one-step function -***************************************/ -/** -ZSTDv02_decompress() : decompress ZSTD frames compliant with v0.2.x format - compressedSize : is the exact source size - maxOriginalSize : is the size of the 'dst' buffer, which must be already allocated. - It must be equal or larger than originalSize, otherwise decompression will fail. - return : the number of bytes decompressed into destination buffer (originalSize) - or an errorCode if it fails (which can be tested using ZSTDv01_isError()) -*/ -size_t ZSTDv02_decompress( void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - - /** - ZSTDv02_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.2.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. - */ -void ZSTDv02_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - -/** -ZSTDv02_isError() : tells if the result of ZSTDv02_decompress() is an error -*/ -unsigned ZSTDv02_isError(size_t code); - - -/* ************************************* -* Advanced functions -***************************************/ -typedef struct ZSTDv02_Dctx_s ZSTDv02_Dctx; -ZSTDv02_Dctx* ZSTDv02_createDCtx(void); -size_t ZSTDv02_freeDCtx(ZSTDv02_Dctx* dctx); - -size_t ZSTDv02_decompressDCtx(void* ctx, - void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - -/* ************************************* -* Streaming functions -***************************************/ -size_t ZSTDv02_resetDCtx(ZSTDv02_Dctx* dctx); - -size_t ZSTDv02_nextSrcSizeToDecompress(ZSTDv02_Dctx* dctx); -size_t ZSTDv02_decompressContinue(ZSTDv02_Dctx* dctx, void* dst, size_t maxDstSize, const void* src, size_t srcSize); -/** - Use above functions alternatively. - ZSTD_nextSrcSizeToDecompress() tells how much bytes to provide as 'srcSize' to ZSTD_decompressContinue(). - ZSTD_decompressContinue() will use previous data blocks to improve compression if they are located prior to current block. - Result is the number of bytes regenerated within 'dst'. - It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some header. -*/ - -/* ************************************* -* Prefix - version detection -***************************************/ -#define ZSTDv02_magicNumber 0xFD2FB522 /* v0.2 */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_V02_H_4174539423 */ -/**** ended inlining zstd_v02.h ****/ -#endif -#if (ZSTD_LEGACY_SUPPORT <= 3) -/**** start inlining zstd_v03.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_V03_H_298734209782 -#define ZSTD_V03_H_298734209782 - -#if defined (__cplusplus) -extern "C" { -#endif - -/* ************************************* -* Includes -***************************************/ -#include /* size_t */ - - -/* ************************************* -* Simple one-step function -***************************************/ -/** -ZSTDv03_decompress() : decompress ZSTD frames compliant with v0.3.x format - compressedSize : is the exact source size - maxOriginalSize : is the size of the 'dst' buffer, which must be already allocated. - It must be equal or larger than originalSize, otherwise decompression will fail. - return : the number of bytes decompressed into destination buffer (originalSize) - or an errorCode if it fails (which can be tested using ZSTDv01_isError()) -*/ -size_t ZSTDv03_decompress( void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - - /** - ZSTDv03_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.3.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. - */ - void ZSTDv03_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - - /** -ZSTDv03_isError() : tells if the result of ZSTDv03_decompress() is an error -*/ -unsigned ZSTDv03_isError(size_t code); - - -/* ************************************* -* Advanced functions -***************************************/ -typedef struct ZSTDv03_Dctx_s ZSTDv03_Dctx; -ZSTDv03_Dctx* ZSTDv03_createDCtx(void); -size_t ZSTDv03_freeDCtx(ZSTDv03_Dctx* dctx); - -size_t ZSTDv03_decompressDCtx(void* ctx, - void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - -/* ************************************* -* Streaming functions -***************************************/ -size_t ZSTDv03_resetDCtx(ZSTDv03_Dctx* dctx); - -size_t ZSTDv03_nextSrcSizeToDecompress(ZSTDv03_Dctx* dctx); -size_t ZSTDv03_decompressContinue(ZSTDv03_Dctx* dctx, void* dst, size_t maxDstSize, const void* src, size_t srcSize); -/** - Use above functions alternatively. - ZSTD_nextSrcSizeToDecompress() tells how much bytes to provide as 'srcSize' to ZSTD_decompressContinue(). - ZSTD_decompressContinue() will use previous data blocks to improve compression if they are located prior to current block. - Result is the number of bytes regenerated within 'dst'. - It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some header. -*/ - -/* ************************************* -* Prefix - version detection -***************************************/ -#define ZSTDv03_magicNumber 0xFD2FB523 /* v0.3 */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_V03_H_298734209782 */ -/**** ended inlining zstd_v03.h ****/ -#endif -#if (ZSTD_LEGACY_SUPPORT <= 4) -/**** start inlining zstd_v04.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTD_V04_H_91868324769238 -#define ZSTD_V04_H_91868324769238 - -#if defined (__cplusplus) -extern "C" { -#endif - -/* ************************************* -* Includes -***************************************/ -#include /* size_t */ - - -/* ************************************* -* Simple one-step function -***************************************/ -/** -ZSTDv04_decompress() : decompress ZSTD frames compliant with v0.4.x format - compressedSize : is the exact source size - maxOriginalSize : is the size of the 'dst' buffer, which must be already allocated. - It must be equal or larger than originalSize, otherwise decompression will fail. - return : the number of bytes decompressed into destination buffer (originalSize) - or an errorCode if it fails (which can be tested using ZSTDv01_isError()) -*/ -size_t ZSTDv04_decompress( void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - - /** - ZSTDv04_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.4.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. - */ - void ZSTDv04_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - -/** -ZSTDv04_isError() : tells if the result of ZSTDv04_decompress() is an error -*/ -unsigned ZSTDv04_isError(size_t code); - - -/* ************************************* -* Advanced functions -***************************************/ -typedef struct ZSTDv04_Dctx_s ZSTDv04_Dctx; -ZSTDv04_Dctx* ZSTDv04_createDCtx(void); -size_t ZSTDv04_freeDCtx(ZSTDv04_Dctx* dctx); - -size_t ZSTDv04_decompressDCtx(ZSTDv04_Dctx* dctx, - void* dst, size_t maxOriginalSize, - const void* src, size_t compressedSize); - - -/* ************************************* -* Direct Streaming -***************************************/ -size_t ZSTDv04_resetDCtx(ZSTDv04_Dctx* dctx); - -size_t ZSTDv04_nextSrcSizeToDecompress(ZSTDv04_Dctx* dctx); -size_t ZSTDv04_decompressContinue(ZSTDv04_Dctx* dctx, void* dst, size_t maxDstSize, const void* src, size_t srcSize); -/** - Use above functions alternatively. - ZSTD_nextSrcSizeToDecompress() tells how much bytes to provide as 'srcSize' to ZSTD_decompressContinue(). - ZSTD_decompressContinue() will use previous data blocks to improve compression if they are located prior to current block. - Result is the number of bytes regenerated within 'dst'. - It can be zero, which is not an error; it just means ZSTD_decompressContinue() has decoded some header. -*/ - - -/* ************************************* -* Buffered Streaming -***************************************/ -typedef struct ZBUFFv04_DCtx_s ZBUFFv04_DCtx; -ZBUFFv04_DCtx* ZBUFFv04_createDCtx(void); -size_t ZBUFFv04_freeDCtx(ZBUFFv04_DCtx* dctx); - -size_t ZBUFFv04_decompressInit(ZBUFFv04_DCtx* dctx); -size_t ZBUFFv04_decompressWithDictionary(ZBUFFv04_DCtx* dctx, const void* dict, size_t dictSize); - -size_t ZBUFFv04_decompressContinue(ZBUFFv04_DCtx* dctx, void* dst, size_t* maxDstSizePtr, const void* src, size_t* srcSizePtr); - -/** ************************************************ -* Streaming decompression -* -* A ZBUFF_DCtx object is required to track streaming operation. -* Use ZBUFF_createDCtx() and ZBUFF_freeDCtx() to create/release resources. -* Use ZBUFF_decompressInit() to start a new decompression operation. -* ZBUFF_DCtx objects can be reused multiple times. -* -* Optionally, a reference to a static dictionary can be set, using ZBUFF_decompressWithDictionary() -* It must be the same content as the one set during compression phase. -* Dictionary content must remain accessible during the decompression process. -* -* Use ZBUFF_decompressContinue() repetitively to consume your input. -* *srcSizePtr and *maxDstSizePtr can be any size. -* The function will report how many bytes were read or written by modifying *srcSizePtr and *maxDstSizePtr. -* Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again. -* The content of dst will be overwritten (up to *maxDstSizePtr) at each function call, so save its content if it matters or change dst. -* @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to improve latency) -* or 0 when a frame is completely decoded -* or an error code, which can be tested using ZBUFF_isError(). -* -* Hint : recommended buffer sizes (not compulsory) : ZBUFF_recommendedDInSize / ZBUFF_recommendedDOutSize -* output : ZBUFF_recommendedDOutSize==128 KB block size is the internal unit, it ensures it's always possible to write a full block when it's decoded. -* input : ZBUFF_recommendedDInSize==128Kb+3; just follow indications from ZBUFF_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 . -* **************************************************/ -unsigned ZBUFFv04_isError(size_t errorCode); -const char* ZBUFFv04_getErrorName(size_t errorCode); - - -/** The below functions provide recommended buffer sizes for Compression or Decompression operations. -* These sizes are not compulsory, they just tend to offer better latency */ -size_t ZBUFFv04_recommendedDInSize(void); -size_t ZBUFFv04_recommendedDOutSize(void); - - -/* ************************************* -* Prefix - version detection -***************************************/ -#define ZSTDv04_magicNumber 0xFD2FB524 /* v0.4 */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_V04_H_91868324769238 */ -/**** ended inlining zstd_v04.h ****/ -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) -/**** start inlining zstd_v05.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTDv05_H -#define ZSTDv05_H - -#if defined (__cplusplus) -extern "C" { -#endif - -/*-************************************* -* Dependencies -***************************************/ -#include /* size_t */ -/**** skipping file: ../common/mem.h ****/ - - -/* ************************************* -* Simple functions -***************************************/ -/*! ZSTDv05_decompress() : - `compressedSize` : is the _exact_ size of the compressed blob, otherwise decompression will fail. - `dstCapacity` must be large enough, equal or larger than originalSize. - @return : the number of bytes decompressed into `dst` (<= `dstCapacity`), - or an errorCode if it fails (which can be tested using ZSTDv05_isError()) */ -size_t ZSTDv05_decompress( void* dst, size_t dstCapacity, - const void* src, size_t compressedSize); - - /** - ZSTDv05_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.5.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. - */ -void ZSTDv05_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - -/* ************************************* -* Helper functions -***************************************/ -/* Error Management */ -unsigned ZSTDv05_isError(size_t code); /*!< tells if a `size_t` function result is an error code */ -const char* ZSTDv05_getErrorName(size_t code); /*!< provides readable string for an error code */ - - -/* ************************************* -* Explicit memory management -***************************************/ -/** Decompression context */ -typedef struct ZSTDv05_DCtx_s ZSTDv05_DCtx; -ZSTDv05_DCtx* ZSTDv05_createDCtx(void); -size_t ZSTDv05_freeDCtx(ZSTDv05_DCtx* dctx); /*!< @return : errorCode */ - -/** ZSTDv05_decompressDCtx() : -* Same as ZSTDv05_decompress(), but requires an already allocated ZSTDv05_DCtx (see ZSTDv05_createDCtx()) */ -size_t ZSTDv05_decompressDCtx(ZSTDv05_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - - -/*-*********************** -* Simple Dictionary API -*************************/ -/*! ZSTDv05_decompress_usingDict() : -* Decompression using a pre-defined Dictionary content (see dictBuilder). -* Dictionary must be identical to the one used during compression, otherwise regenerated data will be corrupted. -* Note : dict can be NULL, in which case, it's equivalent to ZSTDv05_decompressDCtx() */ -size_t ZSTDv05_decompress_usingDict(ZSTDv05_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict,size_t dictSize); - -/*-************************ -* Advanced Streaming API -***************************/ -typedef enum { ZSTDv05_fast, ZSTDv05_greedy, ZSTDv05_lazy, ZSTDv05_lazy2, ZSTDv05_btlazy2, ZSTDv05_opt, ZSTDv05_btopt } ZSTDv05_strategy; -typedef struct { - U64 srcSize; - U32 windowLog; /* the only useful information to retrieve */ - U32 contentLog; U32 hashLog; U32 searchLog; U32 searchLength; U32 targetLength; ZSTDv05_strategy strategy; -} ZSTDv05_parameters; -size_t ZSTDv05_getFrameParams(ZSTDv05_parameters* params, const void* src, size_t srcSize); - -size_t ZSTDv05_decompressBegin_usingDict(ZSTDv05_DCtx* dctx, const void* dict, size_t dictSize); -void ZSTDv05_copyDCtx(ZSTDv05_DCtx* dstDCtx, const ZSTDv05_DCtx* srcDCtx); -size_t ZSTDv05_nextSrcSizeToDecompress(ZSTDv05_DCtx* dctx); -size_t ZSTDv05_decompressContinue(ZSTDv05_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - - -/*-*********************** -* ZBUFF API -*************************/ -typedef struct ZBUFFv05_DCtx_s ZBUFFv05_DCtx; -ZBUFFv05_DCtx* ZBUFFv05_createDCtx(void); -size_t ZBUFFv05_freeDCtx(ZBUFFv05_DCtx* dctx); - -size_t ZBUFFv05_decompressInit(ZBUFFv05_DCtx* dctx); -size_t ZBUFFv05_decompressInitDictionary(ZBUFFv05_DCtx* dctx, const void* dict, size_t dictSize); - -size_t ZBUFFv05_decompressContinue(ZBUFFv05_DCtx* dctx, - void* dst, size_t* dstCapacityPtr, - const void* src, size_t* srcSizePtr); - -/*-*************************************************************************** -* Streaming decompression -* -* A ZBUFFv05_DCtx object is required to track streaming operations. -* Use ZBUFFv05_createDCtx() and ZBUFFv05_freeDCtx() to create/release resources. -* Use ZBUFFv05_decompressInit() to start a new decompression operation, -* or ZBUFFv05_decompressInitDictionary() if decompression requires a dictionary. -* Note that ZBUFFv05_DCtx objects can be reused multiple times. -* -* Use ZBUFFv05_decompressContinue() repetitively to consume your input. -* *srcSizePtr and *dstCapacityPtr can be any size. -* The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr. -* Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again. -* The content of @dst will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters or change @dst. -* @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to help latency) -* or 0 when a frame is completely decoded -* or an error code, which can be tested using ZBUFFv05_isError(). -* -* Hint : recommended buffer sizes (not compulsory) : ZBUFFv05_recommendedDInSize() / ZBUFFv05_recommendedDOutSize() -* output : ZBUFFv05_recommendedDOutSize==128 KB block size is the internal unit, it ensures it's always possible to write a full block when decoded. -* input : ZBUFFv05_recommendedDInSize==128Kb+3; just follow indications from ZBUFFv05_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 . -* *******************************************************************************/ - - -/* ************************************* -* Tool functions -***************************************/ -unsigned ZBUFFv05_isError(size_t errorCode); -const char* ZBUFFv05_getErrorName(size_t errorCode); - -/** Functions below provide recommended buffer sizes for Compression or Decompression operations. -* These sizes are just hints, and tend to offer better latency */ -size_t ZBUFFv05_recommendedDInSize(void); -size_t ZBUFFv05_recommendedDOutSize(void); - - - -/*-************************************* -* Constants -***************************************/ -#define ZSTDv05_MAGICNUMBER 0xFD2FB525 /* v0.5 */ - - - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTDv0505_H */ -/**** ended inlining zstd_v05.h ****/ -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) -/**** start inlining zstd_v06.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTDv06_H -#define ZSTDv06_H - -#if defined (__cplusplus) -extern "C" { -#endif - -/*====== Dependency ======*/ -#include /* size_t */ - - -/*====== Export for Windows ======*/ -/*! -* ZSTDv06_DLL_EXPORT : -* Enable exporting of functions when building a Windows DLL -*/ -#if defined(_WIN32) && defined(ZSTDv06_DLL_EXPORT) && (ZSTDv06_DLL_EXPORT==1) -# define ZSTDLIBv06_API __declspec(dllexport) -#else -# define ZSTDLIBv06_API -#endif - - -/* ************************************* -* Simple functions -***************************************/ -/*! ZSTDv06_decompress() : - `compressedSize` : is the _exact_ size of the compressed blob, otherwise decompression will fail. - `dstCapacity` must be large enough, equal or larger than originalSize. - @return : the number of bytes decompressed into `dst` (<= `dstCapacity`), - or an errorCode if it fails (which can be tested using ZSTDv06_isError()) */ -ZSTDLIBv06_API size_t ZSTDv06_decompress( void* dst, size_t dstCapacity, - const void* src, size_t compressedSize); - -/** -ZSTDv06_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.6.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. -*/ -void ZSTDv06_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - -/* ************************************* -* Helper functions -***************************************/ -ZSTDLIBv06_API size_t ZSTDv06_compressBound(size_t srcSize); /*!< maximum compressed size (worst case scenario) */ - -/* Error Management */ -ZSTDLIBv06_API unsigned ZSTDv06_isError(size_t code); /*!< tells if a `size_t` function result is an error code */ -ZSTDLIBv06_API const char* ZSTDv06_getErrorName(size_t code); /*!< provides readable string for an error code */ - - -/* ************************************* -* Explicit memory management -***************************************/ -/** Decompression context */ -typedef struct ZSTDv06_DCtx_s ZSTDv06_DCtx; -ZSTDLIBv06_API ZSTDv06_DCtx* ZSTDv06_createDCtx(void); -ZSTDLIBv06_API size_t ZSTDv06_freeDCtx(ZSTDv06_DCtx* dctx); /*!< @return : errorCode */ - -/** ZSTDv06_decompressDCtx() : -* Same as ZSTDv06_decompress(), but requires an already allocated ZSTDv06_DCtx (see ZSTDv06_createDCtx()) */ -ZSTDLIBv06_API size_t ZSTDv06_decompressDCtx(ZSTDv06_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - - -/*-*********************** -* Dictionary API -*************************/ -/*! ZSTDv06_decompress_usingDict() : -* Decompression using a pre-defined Dictionary content (see dictBuilder). -* Dictionary must be identical to the one used during compression, otherwise regenerated data will be corrupted. -* Note : dict can be NULL, in which case, it's equivalent to ZSTDv06_decompressDCtx() */ -ZSTDLIBv06_API size_t ZSTDv06_decompress_usingDict(ZSTDv06_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict,size_t dictSize); - - -/*-************************ -* Advanced Streaming API -***************************/ -struct ZSTDv06_frameParams_s { unsigned long long frameContentSize; unsigned windowLog; }; -typedef struct ZSTDv06_frameParams_s ZSTDv06_frameParams; - -ZSTDLIBv06_API size_t ZSTDv06_getFrameParams(ZSTDv06_frameParams* fparamsPtr, const void* src, size_t srcSize); /**< doesn't consume input */ -ZSTDLIBv06_API size_t ZSTDv06_decompressBegin_usingDict(ZSTDv06_DCtx* dctx, const void* dict, size_t dictSize); -ZSTDLIBv06_API void ZSTDv06_copyDCtx(ZSTDv06_DCtx* dctx, const ZSTDv06_DCtx* preparedDCtx); - -ZSTDLIBv06_API size_t ZSTDv06_nextSrcSizeToDecompress(ZSTDv06_DCtx* dctx); -ZSTDLIBv06_API size_t ZSTDv06_decompressContinue(ZSTDv06_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - - - -/* ************************************* -* ZBUFF API -***************************************/ - -typedef struct ZBUFFv06_DCtx_s ZBUFFv06_DCtx; -ZSTDLIBv06_API ZBUFFv06_DCtx* ZBUFFv06_createDCtx(void); -ZSTDLIBv06_API size_t ZBUFFv06_freeDCtx(ZBUFFv06_DCtx* dctx); - -ZSTDLIBv06_API size_t ZBUFFv06_decompressInit(ZBUFFv06_DCtx* dctx); -ZSTDLIBv06_API size_t ZBUFFv06_decompressInitDictionary(ZBUFFv06_DCtx* dctx, const void* dict, size_t dictSize); - -ZSTDLIBv06_API size_t ZBUFFv06_decompressContinue(ZBUFFv06_DCtx* dctx, - void* dst, size_t* dstCapacityPtr, - const void* src, size_t* srcSizePtr); - -/*-*************************************************************************** -* Streaming decompression howto -* -* A ZBUFFv06_DCtx object is required to track streaming operations. -* Use ZBUFFv06_createDCtx() and ZBUFFv06_freeDCtx() to create/release resources. -* Use ZBUFFv06_decompressInit() to start a new decompression operation, -* or ZBUFFv06_decompressInitDictionary() if decompression requires a dictionary. -* Note that ZBUFFv06_DCtx objects can be re-init multiple times. -* -* Use ZBUFFv06_decompressContinue() repetitively to consume your input. -* *srcSizePtr and *dstCapacityPtr can be any size. -* The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr. -* Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again. -* The content of `dst` will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters, or change `dst`. -* @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to help latency), -* or 0 when a frame is completely decoded, -* or an error code, which can be tested using ZBUFFv06_isError(). -* -* Hint : recommended buffer sizes (not compulsory) : ZBUFFv06_recommendedDInSize() and ZBUFFv06_recommendedDOutSize() -* output : ZBUFFv06_recommendedDOutSize== 128 KB block size is the internal unit, it ensures it's always possible to write a full block when decoded. -* input : ZBUFFv06_recommendedDInSize == 128KB + 3; -* just follow indications from ZBUFFv06_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 . -* *******************************************************************************/ - - -/* ************************************* -* Tool functions -***************************************/ -ZSTDLIBv06_API unsigned ZBUFFv06_isError(size_t errorCode); -ZSTDLIBv06_API const char* ZBUFFv06_getErrorName(size_t errorCode); - -/** Functions below provide recommended buffer sizes for Compression or Decompression operations. -* These sizes are just hints, they tend to offer better latency */ -ZSTDLIBv06_API size_t ZBUFFv06_recommendedDInSize(void); -ZSTDLIBv06_API size_t ZBUFFv06_recommendedDOutSize(void); - - -/*-************************************* -* Constants -***************************************/ -#define ZSTDv06_MAGICNUMBER 0xFD2FB526 /* v0.6 */ - - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTDv06_BUFFERED_H */ -/**** ended inlining zstd_v06.h ****/ -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) -/**** start inlining zstd_v07.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -#ifndef ZSTDv07_H_235446 -#define ZSTDv07_H_235446 - -#if defined (__cplusplus) -extern "C" { -#endif - -/*====== Dependency ======*/ -#include /* size_t */ - - -/*====== Export for Windows ======*/ -/*! -* ZSTDv07_DLL_EXPORT : -* Enable exporting of functions when building a Windows DLL -*/ -#if defined(_WIN32) && defined(ZSTDv07_DLL_EXPORT) && (ZSTDv07_DLL_EXPORT==1) -# define ZSTDLIBv07_API __declspec(dllexport) -#else -# define ZSTDLIBv07_API -#endif - - -/* ************************************* -* Simple API -***************************************/ -/*! ZSTDv07_getDecompressedSize() : -* @return : decompressed size if known, 0 otherwise. - note 1 : if `0`, follow up with ZSTDv07_getFrameParams() to know precise failure cause. - note 2 : decompressed size could be wrong or intentionally modified ! - always ensure results fit within application's authorized limits */ -unsigned long long ZSTDv07_getDecompressedSize(const void* src, size_t srcSize); - -/*! ZSTDv07_decompress() : - `compressedSize` : must be _exact_ size of compressed input, otherwise decompression will fail. - `dstCapacity` must be equal or larger than originalSize. - @return : the number of bytes decompressed into `dst` (<= `dstCapacity`), - or an errorCode if it fails (which can be tested using ZSTDv07_isError()) */ -ZSTDLIBv07_API size_t ZSTDv07_decompress( void* dst, size_t dstCapacity, - const void* src, size_t compressedSize); - -/** -ZSTDv07_findFrameSizeInfoLegacy() : get the source length and decompressed bound of a ZSTD frame compliant with v0.7.x format - srcSize : The size of the 'src' buffer, at least as large as the frame pointed to by 'src' - cSize (output parameter) : the number of bytes that would be read to decompress this frame - or an error code if it fails (which can be tested using ZSTDv01_isError()) - dBound (output parameter) : an upper-bound for the decompressed size of the data in the frame - or ZSTD_CONTENTSIZE_ERROR if an error occurs - - note : assumes `cSize` and `dBound` are _not_ NULL. -*/ -void ZSTDv07_findFrameSizeInfoLegacy(const void *src, size_t srcSize, - size_t* cSize, unsigned long long* dBound); - -/*====== Helper functions ======*/ -ZSTDLIBv07_API unsigned ZSTDv07_isError(size_t code); /*!< tells if a `size_t` function result is an error code */ -ZSTDLIBv07_API const char* ZSTDv07_getErrorName(size_t code); /*!< provides readable string from an error code */ - - -/*-************************************* -* Explicit memory management -***************************************/ -/** Decompression context */ -typedef struct ZSTDv07_DCtx_s ZSTDv07_DCtx; -ZSTDLIBv07_API ZSTDv07_DCtx* ZSTDv07_createDCtx(void); -ZSTDLIBv07_API size_t ZSTDv07_freeDCtx(ZSTDv07_DCtx* dctx); /*!< @return : errorCode */ - -/** ZSTDv07_decompressDCtx() : -* Same as ZSTDv07_decompress(), requires an allocated ZSTDv07_DCtx (see ZSTDv07_createDCtx()) */ -ZSTDLIBv07_API size_t ZSTDv07_decompressDCtx(ZSTDv07_DCtx* ctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize); - - -/*-************************ -* Simple dictionary API -***************************/ -/*! ZSTDv07_decompress_usingDict() : -* Decompression using a pre-defined Dictionary content (see dictBuilder). -* Dictionary must be identical to the one used during compression. -* Note : This function load the dictionary, resulting in a significant startup time */ -ZSTDLIBv07_API size_t ZSTDv07_decompress_usingDict(ZSTDv07_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict,size_t dictSize); - - -/*-************************** -* Advanced Dictionary API -****************************/ -/*! ZSTDv07_createDDict() : -* Create a digested dictionary, ready to start decompression operation without startup delay. -* `dict` can be released after creation */ -typedef struct ZSTDv07_DDict_s ZSTDv07_DDict; -ZSTDLIBv07_API ZSTDv07_DDict* ZSTDv07_createDDict(const void* dict, size_t dictSize); -ZSTDLIBv07_API size_t ZSTDv07_freeDDict(ZSTDv07_DDict* ddict); - -/*! ZSTDv07_decompress_usingDDict() : -* Decompression using a pre-digested Dictionary -* Faster startup than ZSTDv07_decompress_usingDict(), recommended when same dictionary is used multiple times. */ -ZSTDLIBv07_API size_t ZSTDv07_decompress_usingDDict(ZSTDv07_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const ZSTDv07_DDict* ddict); - -typedef struct { - unsigned long long frameContentSize; - unsigned windowSize; - unsigned dictID; - unsigned checksumFlag; -} ZSTDv07_frameParams; - -ZSTDLIBv07_API size_t ZSTDv07_getFrameParams(ZSTDv07_frameParams* fparamsPtr, const void* src, size_t srcSize); /**< doesn't consume input */ - - - - -/* ************************************* -* Streaming functions -***************************************/ -typedef struct ZBUFFv07_DCtx_s ZBUFFv07_DCtx; -ZSTDLIBv07_API ZBUFFv07_DCtx* ZBUFFv07_createDCtx(void); -ZSTDLIBv07_API size_t ZBUFFv07_freeDCtx(ZBUFFv07_DCtx* dctx); - -ZSTDLIBv07_API size_t ZBUFFv07_decompressInit(ZBUFFv07_DCtx* dctx); -ZSTDLIBv07_API size_t ZBUFFv07_decompressInitDictionary(ZBUFFv07_DCtx* dctx, const void* dict, size_t dictSize); - -ZSTDLIBv07_API size_t ZBUFFv07_decompressContinue(ZBUFFv07_DCtx* dctx, - void* dst, size_t* dstCapacityPtr, - const void* src, size_t* srcSizePtr); - -/*-*************************************************************************** -* Streaming decompression howto -* -* A ZBUFFv07_DCtx object is required to track streaming operations. -* Use ZBUFFv07_createDCtx() and ZBUFFv07_freeDCtx() to create/release resources. -* Use ZBUFFv07_decompressInit() to start a new decompression operation, -* or ZBUFFv07_decompressInitDictionary() if decompression requires a dictionary. -* Note that ZBUFFv07_DCtx objects can be re-init multiple times. -* -* Use ZBUFFv07_decompressContinue() repetitively to consume your input. -* *srcSizePtr and *dstCapacityPtr can be any size. -* The function will report how many bytes were read or written by modifying *srcSizePtr and *dstCapacityPtr. -* Note that it may not consume the entire input, in which case it's up to the caller to present remaining input again. -* The content of `dst` will be overwritten (up to *dstCapacityPtr) at each function call, so save its content if it matters, or change `dst`. -* @return : a hint to preferred nb of bytes to use as input for next function call (it's only a hint, to help latency), -* or 0 when a frame is completely decoded, -* or an error code, which can be tested using ZBUFFv07_isError(). -* -* Hint : recommended buffer sizes (not compulsory) : ZBUFFv07_recommendedDInSize() and ZBUFFv07_recommendedDOutSize() -* output : ZBUFFv07_recommendedDOutSize== 128 KB block size is the internal unit, it ensures it's always possible to write a full block when decoded. -* input : ZBUFFv07_recommendedDInSize == 128KB + 3; -* just follow indications from ZBUFFv07_decompressContinue() to minimize latency. It should always be <= 128 KB + 3 . -* *******************************************************************************/ - - -/* ************************************* -* Tool functions -***************************************/ -ZSTDLIBv07_API unsigned ZBUFFv07_isError(size_t errorCode); -ZSTDLIBv07_API const char* ZBUFFv07_getErrorName(size_t errorCode); - -/** Functions below provide recommended buffer sizes for Compression or Decompression operations. -* These sizes are just hints, they tend to offer better latency */ -ZSTDLIBv07_API size_t ZBUFFv07_recommendedDInSize(void); -ZSTDLIBv07_API size_t ZBUFFv07_recommendedDOutSize(void); - - -/*-************************************* -* Constants -***************************************/ -#define ZSTDv07_MAGICNUMBER 0xFD2FB527 /* v0.7 */ - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTDv07_H_235446 */ -/**** ended inlining zstd_v07.h ****/ -#endif - -/** ZSTD_isLegacy() : - @return : > 0 if supported by legacy decoder. 0 otherwise. - return value is the version. -*/ -MEM_STATIC unsigned ZSTD_isLegacy(const void* src, size_t srcSize) -{ - U32 magicNumberLE; - if (srcSize<4) return 0; - magicNumberLE = MEM_readLE32(src); - switch(magicNumberLE) - { -#if (ZSTD_LEGACY_SUPPORT <= 1) - case ZSTDv01_magicNumberLE:return 1; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 2) - case ZSTDv02_magicNumber : return 2; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 3) - case ZSTDv03_magicNumber : return 3; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 4) - case ZSTDv04_magicNumber : return 4; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) - case ZSTDv05_MAGICNUMBER : return 5; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - case ZSTDv06_MAGICNUMBER : return 6; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - case ZSTDv07_MAGICNUMBER : return 7; -#endif - default : return 0; - } -} - - -MEM_STATIC unsigned long long ZSTD_getDecompressedSize_legacy(const void* src, size_t srcSize) -{ - U32 const version = ZSTD_isLegacy(src, srcSize); - if (version < 5) return 0; /* no decompressed size in frame header, or not a legacy format */ -#if (ZSTD_LEGACY_SUPPORT <= 5) - if (version==5) { - ZSTDv05_parameters fParams; - size_t const frResult = ZSTDv05_getFrameParams(&fParams, src, srcSize); - if (frResult != 0) return 0; - return fParams.srcSize; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - if (version==6) { - ZSTDv06_frameParams fParams; - size_t const frResult = ZSTDv06_getFrameParams(&fParams, src, srcSize); - if (frResult != 0) return 0; - return fParams.frameContentSize; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - if (version==7) { - ZSTDv07_frameParams fParams; - size_t const frResult = ZSTDv07_getFrameParams(&fParams, src, srcSize); - if (frResult != 0) return 0; - return fParams.frameContentSize; - } -#endif - return 0; /* should not be possible */ -} - - -MEM_STATIC size_t ZSTD_decompressLegacy( - void* dst, size_t dstCapacity, - const void* src, size_t compressedSize, - const void* dict,size_t dictSize) -{ - U32 const version = ZSTD_isLegacy(src, compressedSize); - (void)dst; (void)dstCapacity; (void)dict; (void)dictSize; /* unused when ZSTD_LEGACY_SUPPORT >= 8 */ - switch(version) - { -#if (ZSTD_LEGACY_SUPPORT <= 1) - case 1 : - return ZSTDv01_decompress(dst, dstCapacity, src, compressedSize); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 2) - case 2 : - return ZSTDv02_decompress(dst, dstCapacity, src, compressedSize); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 3) - case 3 : - return ZSTDv03_decompress(dst, dstCapacity, src, compressedSize); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 4) - case 4 : - return ZSTDv04_decompress(dst, dstCapacity, src, compressedSize); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) - case 5 : - { size_t result; - ZSTDv05_DCtx* const zd = ZSTDv05_createDCtx(); - if (zd==NULL) return ERROR(memory_allocation); - result = ZSTDv05_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize); - ZSTDv05_freeDCtx(zd); - return result; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - case 6 : - { size_t result; - ZSTDv06_DCtx* const zd = ZSTDv06_createDCtx(); - if (zd==NULL) return ERROR(memory_allocation); - result = ZSTDv06_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize); - ZSTDv06_freeDCtx(zd); - return result; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - case 7 : - { size_t result; - ZSTDv07_DCtx* const zd = ZSTDv07_createDCtx(); - if (zd==NULL) return ERROR(memory_allocation); - result = ZSTDv07_decompress_usingDict(zd, dst, dstCapacity, src, compressedSize, dict, dictSize); - ZSTDv07_freeDCtx(zd); - return result; - } -#endif - default : - return ERROR(prefix_unknown); - } -} - -MEM_STATIC ZSTD_frameSizeInfo ZSTD_findFrameSizeInfoLegacy(const void *src, size_t srcSize) -{ - ZSTD_frameSizeInfo frameSizeInfo; - U32 const version = ZSTD_isLegacy(src, srcSize); - switch(version) - { -#if (ZSTD_LEGACY_SUPPORT <= 1) - case 1 : - ZSTDv01_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 2) - case 2 : - ZSTDv02_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 3) - case 3 : - ZSTDv03_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 4) - case 4 : - ZSTDv04_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) - case 5 : - ZSTDv05_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - case 6 : - ZSTDv06_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - case 7 : - ZSTDv07_findFrameSizeInfoLegacy(src, srcSize, - &frameSizeInfo.compressedSize, - &frameSizeInfo.decompressedBound); - break; -#endif - default : - frameSizeInfo.compressedSize = ERROR(prefix_unknown); - frameSizeInfo.decompressedBound = ZSTD_CONTENTSIZE_ERROR; - break; - } - if (!ZSTD_isError(frameSizeInfo.compressedSize) && frameSizeInfo.compressedSize > srcSize) { - frameSizeInfo.compressedSize = ERROR(srcSize_wrong); - frameSizeInfo.decompressedBound = ZSTD_CONTENTSIZE_ERROR; - } - return frameSizeInfo; -} - -MEM_STATIC size_t ZSTD_findFrameCompressedSizeLegacy(const void *src, size_t srcSize) -{ - ZSTD_frameSizeInfo frameSizeInfo = ZSTD_findFrameSizeInfoLegacy(src, srcSize); - return frameSizeInfo.compressedSize; -} - -MEM_STATIC size_t ZSTD_freeLegacyStreamContext(void* legacyContext, U32 version) -{ - switch(version) - { - default : - case 1 : - case 2 : - case 3 : - (void)legacyContext; - return ERROR(version_unsupported); -#if (ZSTD_LEGACY_SUPPORT <= 4) - case 4 : return ZBUFFv04_freeDCtx((ZBUFFv04_DCtx*)legacyContext); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) - case 5 : return ZBUFFv05_freeDCtx((ZBUFFv05_DCtx*)legacyContext); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - case 6 : return ZBUFFv06_freeDCtx((ZBUFFv06_DCtx*)legacyContext); -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - case 7 : return ZBUFFv07_freeDCtx((ZBUFFv07_DCtx*)legacyContext); -#endif - } -} - - -MEM_STATIC size_t ZSTD_initLegacyStream(void** legacyContext, U32 prevVersion, U32 newVersion, - const void* dict, size_t dictSize) -{ - DEBUGLOG(5, "ZSTD_initLegacyStream for v0.%u", newVersion); - if (prevVersion != newVersion) ZSTD_freeLegacyStreamContext(*legacyContext, prevVersion); - switch(newVersion) - { - default : - case 1 : - case 2 : - case 3 : - (void)dict; (void)dictSize; - return 0; -#if (ZSTD_LEGACY_SUPPORT <= 4) - case 4 : - { - ZBUFFv04_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv04_createDCtx() : (ZBUFFv04_DCtx*)*legacyContext; - if (dctx==NULL) return ERROR(memory_allocation); - ZBUFFv04_decompressInit(dctx); - ZBUFFv04_decompressWithDictionary(dctx, dict, dictSize); - *legacyContext = dctx; - return 0; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) - case 5 : - { - ZBUFFv05_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv05_createDCtx() : (ZBUFFv05_DCtx*)*legacyContext; - if (dctx==NULL) return ERROR(memory_allocation); - ZBUFFv05_decompressInitDictionary(dctx, dict, dictSize); - *legacyContext = dctx; - return 0; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - case 6 : - { - ZBUFFv06_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv06_createDCtx() : (ZBUFFv06_DCtx*)*legacyContext; - if (dctx==NULL) return ERROR(memory_allocation); - ZBUFFv06_decompressInitDictionary(dctx, dict, dictSize); - *legacyContext = dctx; - return 0; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - case 7 : - { - ZBUFFv07_DCtx* dctx = (prevVersion != newVersion) ? ZBUFFv07_createDCtx() : (ZBUFFv07_DCtx*)*legacyContext; - if (dctx==NULL) return ERROR(memory_allocation); - ZBUFFv07_decompressInitDictionary(dctx, dict, dictSize); - *legacyContext = dctx; - return 0; - } -#endif - } -} - - - -MEM_STATIC size_t ZSTD_decompressLegacyStream(void* legacyContext, U32 version, - ZSTD_outBuffer* output, ZSTD_inBuffer* input) -{ - DEBUGLOG(5, "ZSTD_decompressLegacyStream for v0.%u", version); - switch(version) - { - default : - case 1 : - case 2 : - case 3 : - (void)legacyContext; (void)output; (void)input; - return ERROR(version_unsupported); -#if (ZSTD_LEGACY_SUPPORT <= 4) - case 4 : - { - ZBUFFv04_DCtx* dctx = (ZBUFFv04_DCtx*) legacyContext; - const void* src = (const char*)input->src + input->pos; - size_t readSize = input->size - input->pos; - void* dst = (char*)output->dst + output->pos; - size_t decodedSize = output->size - output->pos; - size_t const hintSize = ZBUFFv04_decompressContinue(dctx, dst, &decodedSize, src, &readSize); - output->pos += decodedSize; - input->pos += readSize; - return hintSize; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 5) - case 5 : - { - ZBUFFv05_DCtx* dctx = (ZBUFFv05_DCtx*) legacyContext; - const void* src = (const char*)input->src + input->pos; - size_t readSize = input->size - input->pos; - void* dst = (char*)output->dst + output->pos; - size_t decodedSize = output->size - output->pos; - size_t const hintSize = ZBUFFv05_decompressContinue(dctx, dst, &decodedSize, src, &readSize); - output->pos += decodedSize; - input->pos += readSize; - return hintSize; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 6) - case 6 : - { - ZBUFFv06_DCtx* dctx = (ZBUFFv06_DCtx*) legacyContext; - const void* src = (const char*)input->src + input->pos; - size_t readSize = input->size - input->pos; - void* dst = (char*)output->dst + output->pos; - size_t decodedSize = output->size - output->pos; - size_t const hintSize = ZBUFFv06_decompressContinue(dctx, dst, &decodedSize, src, &readSize); - output->pos += decodedSize; - input->pos += readSize; - return hintSize; - } -#endif -#if (ZSTD_LEGACY_SUPPORT <= 7) - case 7 : - { - ZBUFFv07_DCtx* dctx = (ZBUFFv07_DCtx*) legacyContext; - const void* src = (const char*)input->src + input->pos; - size_t readSize = input->size - input->pos; - void* dst = (char*)output->dst + output->pos; - size_t decodedSize = output->size - output->pos; - size_t const hintSize = ZBUFFv07_decompressContinue(dctx, dst, &decodedSize, src, &readSize); - output->pos += decodedSize; - input->pos += readSize; - return hintSize; - } -#endif - } -} - - -#if defined (__cplusplus) -} -#endif - -#endif /* ZSTD_LEGACY_H */ -/**** ended inlining ../legacy/zstd_legacy.h ****/ -#endif - - - -/*-******************************************************* -* Types -*********************************************************/ -struct ZSTD_DDict_s { - void* dictBuffer; - const void* dictContent; - size_t dictSize; - ZSTD_entropyDTables_t entropy; - U32 dictID; - U32 entropyPresent; - ZSTD_customMem cMem; -}; /* typedef'd to ZSTD_DDict within "zstd.h" */ - -const void* ZSTD_DDict_dictContent(const ZSTD_DDict* ddict) -{ - assert(ddict != NULL); - return ddict->dictContent; -} - -size_t ZSTD_DDict_dictSize(const ZSTD_DDict* ddict) -{ - assert(ddict != NULL); - return ddict->dictSize; -} - -void ZSTD_copyDDictParameters(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict) -{ - DEBUGLOG(4, "ZSTD_copyDDictParameters"); - assert(dctx != NULL); - assert(ddict != NULL); - dctx->dictID = ddict->dictID; - dctx->prefixStart = ddict->dictContent; - dctx->virtualStart = ddict->dictContent; - dctx->dictEnd = (const BYTE*)ddict->dictContent + ddict->dictSize; - dctx->previousDstEnd = dctx->dictEnd; -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - dctx->dictContentBeginForFuzzing = dctx->prefixStart; - dctx->dictContentEndForFuzzing = dctx->previousDstEnd; -#endif - if (ddict->entropyPresent) { - dctx->litEntropy = 1; - dctx->fseEntropy = 1; - dctx->LLTptr = ddict->entropy.LLTable; - dctx->MLTptr = ddict->entropy.MLTable; - dctx->OFTptr = ddict->entropy.OFTable; - dctx->HUFptr = ddict->entropy.hufTable; - dctx->entropy.rep[0] = ddict->entropy.rep[0]; - dctx->entropy.rep[1] = ddict->entropy.rep[1]; - dctx->entropy.rep[2] = ddict->entropy.rep[2]; - } else { - dctx->litEntropy = 0; - dctx->fseEntropy = 0; - } -} - - -static size_t -ZSTD_loadEntropy_intoDDict(ZSTD_DDict* ddict, - ZSTD_dictContentType_e dictContentType) -{ - ddict->dictID = 0; - ddict->entropyPresent = 0; - if (dictContentType == ZSTD_dct_rawContent) return 0; - - if (ddict->dictSize < 8) { - if (dictContentType == ZSTD_dct_fullDict) - return ERROR(dictionary_corrupted); /* only accept specified dictionaries */ - return 0; /* pure content mode */ - } - { U32 const magic = MEM_readLE32(ddict->dictContent); - if (magic != ZSTD_MAGIC_DICTIONARY) { - if (dictContentType == ZSTD_dct_fullDict) - return ERROR(dictionary_corrupted); /* only accept specified dictionaries */ - return 0; /* pure content mode */ - } - } - ddict->dictID = MEM_readLE32((const char*)ddict->dictContent + ZSTD_FRAMEIDSIZE); - - /* load entropy tables */ - RETURN_ERROR_IF(ZSTD_isError(ZSTD_loadDEntropy( - &ddict->entropy, ddict->dictContent, ddict->dictSize)), - dictionary_corrupted, ""); - ddict->entropyPresent = 1; - return 0; -} - - -static size_t ZSTD_initDDict_internal(ZSTD_DDict* ddict, - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType) -{ - if ((dictLoadMethod == ZSTD_dlm_byRef) || (!dict) || (!dictSize)) { - ddict->dictBuffer = NULL; - ddict->dictContent = dict; - if (!dict) dictSize = 0; - } else { - void* const internalBuffer = ZSTD_customMalloc(dictSize, ddict->cMem); - ddict->dictBuffer = internalBuffer; - ddict->dictContent = internalBuffer; - if (!internalBuffer) return ERROR(memory_allocation); - ZSTD_memcpy(internalBuffer, dict, dictSize); - } - ddict->dictSize = dictSize; - ddict->entropy.hufTable[0] = (HUF_DTable)((HufLog)*0x1000001); /* cover both little and big endian */ - - /* parse dictionary content */ - FORWARD_IF_ERROR( ZSTD_loadEntropy_intoDDict(ddict, dictContentType) , ""); - - return 0; -} - -ZSTD_DDict* ZSTD_createDDict_advanced(const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType, - ZSTD_customMem customMem) -{ - if ((!customMem.customAlloc) ^ (!customMem.customFree)) return NULL; - - { ZSTD_DDict* const ddict = (ZSTD_DDict*) ZSTD_customMalloc(sizeof(ZSTD_DDict), customMem); - if (ddict == NULL) return NULL; - ddict->cMem = customMem; - { size_t const initResult = ZSTD_initDDict_internal(ddict, - dict, dictSize, - dictLoadMethod, dictContentType); - if (ZSTD_isError(initResult)) { - ZSTD_freeDDict(ddict); - return NULL; - } } - return ddict; - } -} - -/*! ZSTD_createDDict() : -* Create a digested dictionary, to start decompression without startup delay. -* `dict` content is copied inside DDict. -* Consequently, `dict` can be released after `ZSTD_DDict` creation */ -ZSTD_DDict* ZSTD_createDDict(const void* dict, size_t dictSize) -{ - ZSTD_customMem const allocator = { NULL, NULL, NULL }; - return ZSTD_createDDict_advanced(dict, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto, allocator); -} - -/*! ZSTD_createDDict_byReference() : - * Create a digested dictionary, to start decompression without startup delay. - * Dictionary content is simply referenced, it will be accessed during decompression. - * Warning : dictBuffer must outlive DDict (DDict must be freed before dictBuffer) */ -ZSTD_DDict* ZSTD_createDDict_byReference(const void* dictBuffer, size_t dictSize) -{ - ZSTD_customMem const allocator = { NULL, NULL, NULL }; - return ZSTD_createDDict_advanced(dictBuffer, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto, allocator); -} - - -const ZSTD_DDict* ZSTD_initStaticDDict( - void* sBuffer, size_t sBufferSize, - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType) -{ - size_t const neededSpace = sizeof(ZSTD_DDict) - + (dictLoadMethod == ZSTD_dlm_byRef ? 0 : dictSize); - ZSTD_DDict* const ddict = (ZSTD_DDict*)sBuffer; - assert(sBuffer != NULL); - assert(dict != NULL); - if ((size_t)sBuffer & 7) return NULL; /* 8-aligned */ - if (sBufferSize < neededSpace) return NULL; - if (dictLoadMethod == ZSTD_dlm_byCopy) { - ZSTD_memcpy(ddict+1, dict, dictSize); /* local copy */ - dict = ddict+1; - } - if (ZSTD_isError( ZSTD_initDDict_internal(ddict, - dict, dictSize, - ZSTD_dlm_byRef, dictContentType) )) - return NULL; - return ddict; -} - - -size_t ZSTD_freeDDict(ZSTD_DDict* ddict) -{ - if (ddict==NULL) return 0; /* support free on NULL */ - { ZSTD_customMem const cMem = ddict->cMem; - ZSTD_customFree(ddict->dictBuffer, cMem); - ZSTD_customFree(ddict, cMem); - return 0; - } -} - -/*! ZSTD_estimateDDictSize() : - * Estimate amount of memory that will be needed to create a dictionary for decompression. - * Note : dictionary created by reference using ZSTD_dlm_byRef are smaller */ -size_t ZSTD_estimateDDictSize(size_t dictSize, ZSTD_dictLoadMethod_e dictLoadMethod) -{ - return sizeof(ZSTD_DDict) + (dictLoadMethod == ZSTD_dlm_byRef ? 0 : dictSize); -} - -size_t ZSTD_sizeof_DDict(const ZSTD_DDict* ddict) -{ - if (ddict==NULL) return 0; /* support sizeof on NULL */ - return sizeof(*ddict) + (ddict->dictBuffer ? ddict->dictSize : 0) ; -} - -/*! ZSTD_getDictID_fromDDict() : - * Provides the dictID of the dictionary loaded into `ddict`. - * If @return == 0, the dictionary is not conformant to Zstandard specification, or empty. - * Non-conformant dictionaries can still be loaded, but as content-only dictionaries. */ -unsigned ZSTD_getDictID_fromDDict(const ZSTD_DDict* ddict) -{ - if (ddict==NULL) return 0; - return ZSTD_getDictID_fromDict(ddict->dictContent, ddict->dictSize); -} -/**** ended inlining decompress/zstd_ddict.c ****/ -/**** start inlining decompress/zstd_decompress.c ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - - -/* *************************************************************** -* Tuning parameters -*****************************************************************/ -/*! - * HEAPMODE : - * Select how default decompression function ZSTD_decompress() allocates its context, - * on stack (0), or into heap (1, default; requires malloc()). - * Note that functions with explicit context such as ZSTD_decompressDCtx() are unaffected. - */ -#ifndef ZSTD_HEAPMODE -# define ZSTD_HEAPMODE 1 -#endif - -/*! -* LEGACY_SUPPORT : -* if set to 1+, ZSTD_decompress() can decode older formats (v0.1+) -*/ -#ifndef ZSTD_LEGACY_SUPPORT -# define ZSTD_LEGACY_SUPPORT 0 -#endif - -/*! - * MAXWINDOWSIZE_DEFAULT : - * maximum window size accepted by DStream __by default__. - * Frames requiring more memory will be rejected. - * It's possible to set a different limit using ZSTD_DCtx_setMaxWindowSize(). - */ -#ifndef ZSTD_MAXWINDOWSIZE_DEFAULT -# define ZSTD_MAXWINDOWSIZE_DEFAULT (((U32)1 << ZSTD_WINDOWLOG_LIMIT_DEFAULT) + 1) -#endif - -/*! - * NO_FORWARD_PROGRESS_MAX : - * maximum allowed nb of calls to ZSTD_decompressStream() - * without any forward progress - * (defined as: no byte read from input, and no byte flushed to output) - * before triggering an error. - */ -#ifndef ZSTD_NO_FORWARD_PROGRESS_MAX -# define ZSTD_NO_FORWARD_PROGRESS_MAX 16 -#endif - - -/*-******************************************************* -* Dependencies -*********************************************************/ -/**** skipping file: ../common/zstd_deps.h ****/ -/**** skipping file: ../common/cpu.h ****/ -/**** skipping file: ../common/mem.h ****/ -/**** skipping file: ../common/zstd_trace.h ****/ -#define FSE_STATIC_LINKING_ONLY -/**** skipping file: ../common/fse.h ****/ -#define HUF_STATIC_LINKING_ONLY -/**** skipping file: ../common/huf.h ****/ -/**** skipping file: ../common/xxhash.h ****/ -/**** skipping file: ../common/zstd_internal.h ****/ -/**** skipping file: zstd_decompress_internal.h ****/ -/**** skipping file: zstd_ddict.h ****/ -/**** start inlining zstd_decompress_block.h ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - - -#ifndef ZSTD_DEC_BLOCK_H -#define ZSTD_DEC_BLOCK_H - -/*-******************************************************* - * Dependencies - *********************************************************/ -/**** skipping file: ../common/zstd_deps.h ****/ -/**** skipping file: ../zstd.h ****/ -/**** skipping file: ../common/zstd_internal.h ****/ -/**** skipping file: zstd_decompress_internal.h ****/ - - -/* === Prototypes === */ - -/* note: prototypes already published within `zstd.h` : - * ZSTD_decompressBlock() - */ - -/* note: prototypes already published within `zstd_internal.h` : - * ZSTD_getcBlockSize() - * ZSTD_decodeSeqHeaders() - */ - - -/* ZSTD_decompressBlock_internal() : - * decompress block, starting at `src`, - * into destination buffer `dst`. - * @return : decompressed block size, - * or an error code (which can be tested using ZSTD_isError()) - */ -size_t ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, const int frame); - -/* ZSTD_buildFSETable() : - * generate FSE decoding table for one symbol (ll, ml or off) - * this function must be called with valid parameters only - * (dt is large enough, normalizedCounter distribution total is a power of 2, max is within range, etc.) - * in which case it cannot fail. - * The workspace must be 4-byte aligned and at least ZSTD_BUILD_FSE_TABLE_WKSP_SIZE bytes, which is - * defined in zstd_decompress_internal.h. - * Internal use only. - */ -void ZSTD_buildFSETable(ZSTD_seqSymbol* dt, - const short* normalizedCounter, unsigned maxSymbolValue, - const U32* baseValue, const U32* nbAdditionalBits, - unsigned tableLog, void* wksp, size_t wkspSize, - int bmi2); - - -#endif /* ZSTD_DEC_BLOCK_H */ -/**** ended inlining zstd_decompress_block.h ****/ - -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1) -/**** skipping file: ../legacy/zstd_legacy.h ****/ -#endif - - - -/************************************* - * Multiple DDicts Hashset internals * - *************************************/ - -#define DDICT_HASHSET_MAX_LOAD_FACTOR_COUNT_MULT 4 -#define DDICT_HASHSET_MAX_LOAD_FACTOR_SIZE_MULT 3 /* These two constants represent SIZE_MULT/COUNT_MULT load factor without using a float. - * Currently, that means a 0.75 load factor. - * So, if count * COUNT_MULT / size * SIZE_MULT != 0, then we've exceeded - * the load factor of the ddict hash set. - */ - -#define DDICT_HASHSET_TABLE_BASE_SIZE 64 -#define DDICT_HASHSET_RESIZE_FACTOR 2 - -/* Hash function to determine starting position of dict insertion within the table - * Returns an index between [0, hashSet->ddictPtrTableSize] - */ -static size_t ZSTD_DDictHashSet_getIndex(const ZSTD_DDictHashSet* hashSet, U32 dictID) { - const U64 hash = XXH64(&dictID, sizeof(U32), 0); - /* DDict ptr table size is a multiple of 2, use size - 1 as mask to get index within [0, hashSet->ddictPtrTableSize) */ - return hash & (hashSet->ddictPtrTableSize - 1); -} - -/* Adds DDict to a hashset without resizing it. - * If inserting a DDict with a dictID that already exists in the set, replaces the one in the set. - * Returns 0 if successful, or a zstd error code if something went wrong. - */ -static size_t ZSTD_DDictHashSet_emplaceDDict(ZSTD_DDictHashSet* hashSet, const ZSTD_DDict* ddict) { - const U32 dictID = ZSTD_getDictID_fromDDict(ddict); - size_t idx = ZSTD_DDictHashSet_getIndex(hashSet, dictID); - const size_t idxRangeMask = hashSet->ddictPtrTableSize - 1; - RETURN_ERROR_IF(hashSet->ddictPtrCount == hashSet->ddictPtrTableSize, GENERIC, "Hash set is full!"); - DEBUGLOG(4, "Hashed index: for dictID: %u is %zu", dictID, idx); - while (hashSet->ddictPtrTable[idx] != NULL) { - /* Replace existing ddict if inserting ddict with same dictID */ - if (ZSTD_getDictID_fromDDict(hashSet->ddictPtrTable[idx]) == dictID) { - DEBUGLOG(4, "DictID already exists, replacing rather than adding"); - hashSet->ddictPtrTable[idx] = ddict; - return 0; - } - idx &= idxRangeMask; - idx++; - } - DEBUGLOG(4, "Final idx after probing for dictID %u is: %zu", dictID, idx); - hashSet->ddictPtrTable[idx] = ddict; - hashSet->ddictPtrCount++; - return 0; -} - -/* Expands hash table by factor of DDICT_HASHSET_RESIZE_FACTOR and - * rehashes all values, allocates new table, frees old table. - * Returns 0 on success, otherwise a zstd error code. - */ -static size_t ZSTD_DDictHashSet_expand(ZSTD_DDictHashSet* hashSet, ZSTD_customMem customMem) { - size_t newTableSize = hashSet->ddictPtrTableSize * DDICT_HASHSET_RESIZE_FACTOR; - const ZSTD_DDict** newTable = (const ZSTD_DDict**)ZSTD_customCalloc(sizeof(ZSTD_DDict*) * newTableSize, customMem); - const ZSTD_DDict** oldTable = hashSet->ddictPtrTable; - size_t oldTableSize = hashSet->ddictPtrTableSize; - size_t i; - - DEBUGLOG(4, "Expanding DDict hash table! Old size: %zu new size: %zu", oldTableSize, newTableSize); - RETURN_ERROR_IF(!newTable, memory_allocation, "Expanded hashset allocation failed!"); - hashSet->ddictPtrTable = newTable; - hashSet->ddictPtrTableSize = newTableSize; - hashSet->ddictPtrCount = 0; - for (i = 0; i < oldTableSize; ++i) { - if (oldTable[i] != NULL) { - FORWARD_IF_ERROR(ZSTD_DDictHashSet_emplaceDDict(hashSet, oldTable[i]), ""); - } - } - ZSTD_customFree((void*)oldTable, customMem); - DEBUGLOG(4, "Finished re-hash"); - return 0; -} - -/* Fetches a DDict with the given dictID - * Returns the ZSTD_DDict* with the requested dictID. If it doesn't exist, then returns NULL. - */ -static const ZSTD_DDict* ZSTD_DDictHashSet_getDDict(ZSTD_DDictHashSet* hashSet, U32 dictID) { - size_t idx = ZSTD_DDictHashSet_getIndex(hashSet, dictID); - const size_t idxRangeMask = hashSet->ddictPtrTableSize - 1; - DEBUGLOG(4, "Hashed index: for dictID: %u is %zu", dictID, idx); - for (;;) { - size_t currDictID = ZSTD_getDictID_fromDDict(hashSet->ddictPtrTable[idx]); - if (currDictID == dictID || currDictID == 0) { - /* currDictID == 0 implies a NULL ddict entry */ - break; - } else { - idx &= idxRangeMask; /* Goes to start of table when we reach the end */ - idx++; - } - } - DEBUGLOG(4, "Final idx after probing for dictID %u is: %zu", dictID, idx); - return hashSet->ddictPtrTable[idx]; -} - -/* Allocates space for and returns a ddict hash set - * The hash set's ZSTD_DDict* table has all values automatically set to NULL to begin with. - * Returns NULL if allocation failed. - */ -static ZSTD_DDictHashSet* ZSTD_createDDictHashSet(ZSTD_customMem customMem) { - ZSTD_DDictHashSet* ret = (ZSTD_DDictHashSet*)ZSTD_customMalloc(sizeof(ZSTD_DDictHashSet), customMem); - DEBUGLOG(4, "Allocating new hash set"); - ret->ddictPtrTable = (const ZSTD_DDict**)ZSTD_customCalloc(DDICT_HASHSET_TABLE_BASE_SIZE * sizeof(ZSTD_DDict*), customMem); - ret->ddictPtrTableSize = DDICT_HASHSET_TABLE_BASE_SIZE; - ret->ddictPtrCount = 0; - if (!ret || !ret->ddictPtrTable) { - return NULL; - } - return ret; -} - -/* Frees the table of ZSTD_DDict* within a hashset, then frees the hashset itself. - * Note: The ZSTD_DDict* within the table are NOT freed. - */ -static void ZSTD_freeDDictHashSet(ZSTD_DDictHashSet* hashSet, ZSTD_customMem customMem) { - DEBUGLOG(4, "Freeing ddict hash set"); - if (hashSet && hashSet->ddictPtrTable) { - ZSTD_customFree((void*)hashSet->ddictPtrTable, customMem); - } - if (hashSet) { - ZSTD_customFree(hashSet, customMem); - } -} - -/* Public function: Adds a DDict into the ZSTD_DDictHashSet, possibly triggering a resize of the hash set. - * Returns 0 on success, or a ZSTD error. - */ -static size_t ZSTD_DDictHashSet_addDDict(ZSTD_DDictHashSet* hashSet, const ZSTD_DDict* ddict, ZSTD_customMem customMem) { - DEBUGLOG(4, "Adding dict ID: %u to hashset with - Count: %zu Tablesize: %zu", ZSTD_getDictID_fromDDict(ddict), hashSet->ddictPtrCount, hashSet->ddictPtrTableSize); - if (hashSet->ddictPtrCount * DDICT_HASHSET_MAX_LOAD_FACTOR_COUNT_MULT / hashSet->ddictPtrTableSize * DDICT_HASHSET_MAX_LOAD_FACTOR_SIZE_MULT != 0) { - FORWARD_IF_ERROR(ZSTD_DDictHashSet_expand(hashSet, customMem), ""); - } - FORWARD_IF_ERROR(ZSTD_DDictHashSet_emplaceDDict(hashSet, ddict), ""); - return 0; -} - -/*-************************************************************* -* Context management -***************************************************************/ -size_t ZSTD_sizeof_DCtx (const ZSTD_DCtx* dctx) -{ - if (dctx==NULL) return 0; /* support sizeof NULL */ - return sizeof(*dctx) - + ZSTD_sizeof_DDict(dctx->ddictLocal) - + dctx->inBuffSize + dctx->outBuffSize; -} - -size_t ZSTD_estimateDCtxSize(void) { return sizeof(ZSTD_DCtx); } - - -static size_t ZSTD_startingInputLength(ZSTD_format_e format) -{ - size_t const startingInputLength = ZSTD_FRAMEHEADERSIZE_PREFIX(format); - /* only supports formats ZSTD_f_zstd1 and ZSTD_f_zstd1_magicless */ - assert( (format == ZSTD_f_zstd1) || (format == ZSTD_f_zstd1_magicless) ); - return startingInputLength; -} - -static void ZSTD_DCtx_resetParameters(ZSTD_DCtx* dctx) -{ - assert(dctx->streamStage == zdss_init); - dctx->format = ZSTD_f_zstd1; - dctx->maxWindowSize = ZSTD_MAXWINDOWSIZE_DEFAULT; - dctx->outBufferMode = ZSTD_bm_buffered; - dctx->forceIgnoreChecksum = ZSTD_d_validateChecksum; - dctx->refMultipleDDicts = ZSTD_rmd_refSingleDDict; -} - -static void ZSTD_initDCtx_internal(ZSTD_DCtx* dctx) -{ - dctx->staticSize = 0; - dctx->ddict = NULL; - dctx->ddictLocal = NULL; - dctx->dictEnd = NULL; - dctx->ddictIsCold = 0; - dctx->dictUses = ZSTD_dont_use; - dctx->inBuff = NULL; - dctx->inBuffSize = 0; - dctx->outBuffSize = 0; - dctx->streamStage = zdss_init; - dctx->legacyContext = NULL; - dctx->previousLegacyVersion = 0; - dctx->noForwardProgress = 0; - dctx->oversizedDuration = 0; - dctx->bmi2 = ZSTD_cpuid_bmi2(ZSTD_cpuid()); - dctx->ddictSet = NULL; - ZSTD_DCtx_resetParameters(dctx); -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - dctx->dictContentEndForFuzzing = NULL; -#endif -} - -ZSTD_DCtx* ZSTD_initStaticDCtx(void *workspace, size_t workspaceSize) -{ - ZSTD_DCtx* const dctx = (ZSTD_DCtx*) workspace; - - if ((size_t)workspace & 7) return NULL; /* 8-aligned */ - if (workspaceSize < sizeof(ZSTD_DCtx)) return NULL; /* minimum size */ - - ZSTD_initDCtx_internal(dctx); - dctx->staticSize = workspaceSize; - dctx->inBuff = (char*)(dctx+1); - return dctx; -} - -ZSTD_DCtx* ZSTD_createDCtx_advanced(ZSTD_customMem customMem) -{ - if ((!customMem.customAlloc) ^ (!customMem.customFree)) return NULL; - - { ZSTD_DCtx* const dctx = (ZSTD_DCtx*)ZSTD_customMalloc(sizeof(*dctx), customMem); - if (!dctx) return NULL; - dctx->customMem = customMem; - ZSTD_initDCtx_internal(dctx); - return dctx; - } -} - -ZSTD_DCtx* ZSTD_createDCtx(void) -{ - DEBUGLOG(3, "ZSTD_createDCtx"); - return ZSTD_createDCtx_advanced(ZSTD_defaultCMem); -} - -static void ZSTD_clearDict(ZSTD_DCtx* dctx) -{ - ZSTD_freeDDict(dctx->ddictLocal); - dctx->ddictLocal = NULL; - dctx->ddict = NULL; - dctx->dictUses = ZSTD_dont_use; -} - -size_t ZSTD_freeDCtx(ZSTD_DCtx* dctx) -{ - if (dctx==NULL) return 0; /* support free on NULL */ - RETURN_ERROR_IF(dctx->staticSize, memory_allocation, "not compatible with static DCtx"); - { ZSTD_customMem const cMem = dctx->customMem; - ZSTD_clearDict(dctx); - ZSTD_customFree(dctx->inBuff, cMem); - dctx->inBuff = NULL; -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT >= 1) - if (dctx->legacyContext) - ZSTD_freeLegacyStreamContext(dctx->legacyContext, dctx->previousLegacyVersion); -#endif - if (dctx->ddictSet) { - ZSTD_freeDDictHashSet(dctx->ddictSet, cMem); - dctx->ddictSet = NULL; - } - ZSTD_customFree(dctx, cMem); - return 0; - } -} - -/* no longer useful */ -void ZSTD_copyDCtx(ZSTD_DCtx* dstDCtx, const ZSTD_DCtx* srcDCtx) -{ - size_t const toCopy = (size_t)((char*)(&dstDCtx->inBuff) - (char*)dstDCtx); - ZSTD_memcpy(dstDCtx, srcDCtx, toCopy); /* no need to copy workspace */ -} - -/* Given a dctx with a digested frame params, re-selects the correct ZSTD_DDict based on - * the requested dict ID from the frame. If there exists a reference to the correct ZSTD_DDict, then - * accordingly sets the ddict to be used to decompress the frame. - * - * If no DDict is found, then no action is taken, and the ZSTD_DCtx::ddict remains as-is. - * - * ZSTD_d_refMultipleDDicts must be enabled for this function to be called. - */ -static void ZSTD_DCtx_selectFrameDDict(ZSTD_DCtx* dctx) { - assert(dctx->refMultipleDDicts && dctx->ddictSet); - DEBUGLOG(4, "Adjusting DDict based on requested dict ID from frame"); - if (dctx->ddict) { - const ZSTD_DDict* frameDDict = ZSTD_DDictHashSet_getDDict(dctx->ddictSet, dctx->fParams.dictID); - if (frameDDict) { - DEBUGLOG(4, "DDict found!"); - ZSTD_clearDict(dctx); - dctx->dictID = dctx->fParams.dictID; - dctx->ddict = frameDDict; - dctx->dictUses = ZSTD_use_indefinitely; - } - } -} - - -/*-************************************************************* - * Frame header decoding - ***************************************************************/ - -/*! ZSTD_isFrame() : - * Tells if the content of `buffer` starts with a valid Frame Identifier. - * Note : Frame Identifier is 4 bytes. If `size < 4`, @return will always be 0. - * Note 2 : Legacy Frame Identifiers are considered valid only if Legacy Support is enabled. - * Note 3 : Skippable Frame Identifiers are considered valid. */ -unsigned ZSTD_isFrame(const void* buffer, size_t size) -{ - if (size < ZSTD_FRAMEIDSIZE) return 0; - { U32 const magic = MEM_readLE32(buffer); - if (magic == ZSTD_MAGICNUMBER) return 1; - if ((magic & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) return 1; - } -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT >= 1) - if (ZSTD_isLegacy(buffer, size)) return 1; -#endif - return 0; -} - -/** ZSTD_frameHeaderSize_internal() : - * srcSize must be large enough to reach header size fields. - * note : only works for formats ZSTD_f_zstd1 and ZSTD_f_zstd1_magicless. - * @return : size of the Frame Header - * or an error code, which can be tested with ZSTD_isError() */ -static size_t ZSTD_frameHeaderSize_internal(const void* src, size_t srcSize, ZSTD_format_e format) -{ - size_t const minInputSize = ZSTD_startingInputLength(format); - RETURN_ERROR_IF(srcSize < minInputSize, srcSize_wrong, ""); - - { BYTE const fhd = ((const BYTE*)src)[minInputSize-1]; - U32 const dictID= fhd & 3; - U32 const singleSegment = (fhd >> 5) & 1; - U32 const fcsId = fhd >> 6; - return minInputSize + !singleSegment - + ZSTD_did_fieldSize[dictID] + ZSTD_fcs_fieldSize[fcsId] - + (singleSegment && !fcsId); - } -} - -/** ZSTD_frameHeaderSize() : - * srcSize must be >= ZSTD_frameHeaderSize_prefix. - * @return : size of the Frame Header, - * or an error code (if srcSize is too small) */ -size_t ZSTD_frameHeaderSize(const void* src, size_t srcSize) -{ - return ZSTD_frameHeaderSize_internal(src, srcSize, ZSTD_f_zstd1); -} - - -/** ZSTD_getFrameHeader_advanced() : - * decode Frame Header, or require larger `srcSize`. - * note : only works for formats ZSTD_f_zstd1 and ZSTD_f_zstd1_magicless - * @return : 0, `zfhPtr` is correctly filled, - * >0, `srcSize` is too small, value is wanted `srcSize` amount, - * or an error code, which can be tested using ZSTD_isError() */ -size_t ZSTD_getFrameHeader_advanced(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize, ZSTD_format_e format) -{ - const BYTE* ip = (const BYTE*)src; - size_t const minInputSize = ZSTD_startingInputLength(format); - - ZSTD_memset(zfhPtr, 0, sizeof(*zfhPtr)); /* not strictly necessary, but static analyzer do not understand that zfhPtr is only going to be read only if return value is zero, since they are 2 different signals */ - if (srcSize < minInputSize) return minInputSize; - RETURN_ERROR_IF(src==NULL, GENERIC, "invalid parameter"); - - if ( (format != ZSTD_f_zstd1_magicless) - && (MEM_readLE32(src) != ZSTD_MAGICNUMBER) ) { - if ((MEM_readLE32(src) & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) { - /* skippable frame */ - if (srcSize < ZSTD_SKIPPABLEHEADERSIZE) - return ZSTD_SKIPPABLEHEADERSIZE; /* magic number + frame length */ - ZSTD_memset(zfhPtr, 0, sizeof(*zfhPtr)); - zfhPtr->frameContentSize = MEM_readLE32((const char *)src + ZSTD_FRAMEIDSIZE); - zfhPtr->frameType = ZSTD_skippableFrame; - return 0; - } - RETURN_ERROR(prefix_unknown, ""); - } - - /* ensure there is enough `srcSize` to fully read/decode frame header */ - { size_t const fhsize = ZSTD_frameHeaderSize_internal(src, srcSize, format); - if (srcSize < fhsize) return fhsize; - zfhPtr->headerSize = (U32)fhsize; - } - - { BYTE const fhdByte = ip[minInputSize-1]; - size_t pos = minInputSize; - U32 const dictIDSizeCode = fhdByte&3; - U32 const checksumFlag = (fhdByte>>2)&1; - U32 const singleSegment = (fhdByte>>5)&1; - U32 const fcsID = fhdByte>>6; - U64 windowSize = 0; - U32 dictID = 0; - U64 frameContentSize = ZSTD_CONTENTSIZE_UNKNOWN; - RETURN_ERROR_IF((fhdByte & 0x08) != 0, frameParameter_unsupported, - "reserved bits, must be zero"); - - if (!singleSegment) { - BYTE const wlByte = ip[pos++]; - U32 const windowLog = (wlByte >> 3) + ZSTD_WINDOWLOG_ABSOLUTEMIN; - RETURN_ERROR_IF(windowLog > ZSTD_WINDOWLOG_MAX, frameParameter_windowTooLarge, ""); - windowSize = (1ULL << windowLog); - windowSize += (windowSize >> 3) * (wlByte&7); - } - switch(dictIDSizeCode) - { - default: assert(0); /* impossible */ - case 0 : break; - case 1 : dictID = ip[pos]; pos++; break; - case 2 : dictID = MEM_readLE16(ip+pos); pos+=2; break; - case 3 : dictID = MEM_readLE32(ip+pos); pos+=4; break; - } - switch(fcsID) - { - default: assert(0); /* impossible */ - case 0 : if (singleSegment) frameContentSize = ip[pos]; break; - case 1 : frameContentSize = MEM_readLE16(ip+pos)+256; break; - case 2 : frameContentSize = MEM_readLE32(ip+pos); break; - case 3 : frameContentSize = MEM_readLE64(ip+pos); break; - } - if (singleSegment) windowSize = frameContentSize; - - zfhPtr->frameType = ZSTD_frame; - zfhPtr->frameContentSize = frameContentSize; - zfhPtr->windowSize = windowSize; - zfhPtr->blockSizeMax = (unsigned) MIN(windowSize, ZSTD_BLOCKSIZE_MAX); - zfhPtr->dictID = dictID; - zfhPtr->checksumFlag = checksumFlag; - } - return 0; -} - -/** ZSTD_getFrameHeader() : - * decode Frame Header, or require larger `srcSize`. - * note : this function does not consume input, it only reads it. - * @return : 0, `zfhPtr` is correctly filled, - * >0, `srcSize` is too small, value is wanted `srcSize` amount, - * or an error code, which can be tested using ZSTD_isError() */ -size_t ZSTD_getFrameHeader(ZSTD_frameHeader* zfhPtr, const void* src, size_t srcSize) -{ - return ZSTD_getFrameHeader_advanced(zfhPtr, src, srcSize, ZSTD_f_zstd1); -} - - -/** ZSTD_getFrameContentSize() : - * compatible with legacy mode - * @return : decompressed size of the single frame pointed to be `src` if known, otherwise - * - ZSTD_CONTENTSIZE_UNKNOWN if the size cannot be determined - * - ZSTD_CONTENTSIZE_ERROR if an error occurred (e.g. invalid magic number, srcSize too small) */ -unsigned long long ZSTD_getFrameContentSize(const void *src, size_t srcSize) -{ -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT >= 1) - if (ZSTD_isLegacy(src, srcSize)) { - unsigned long long const ret = ZSTD_getDecompressedSize_legacy(src, srcSize); - return ret == 0 ? ZSTD_CONTENTSIZE_UNKNOWN : ret; - } -#endif - { ZSTD_frameHeader zfh; - if (ZSTD_getFrameHeader(&zfh, src, srcSize) != 0) - return ZSTD_CONTENTSIZE_ERROR; - if (zfh.frameType == ZSTD_skippableFrame) { - return 0; - } else { - return zfh.frameContentSize; - } } -} - -static size_t readSkippableFrameSize(void const* src, size_t srcSize) -{ - size_t const skippableHeaderSize = ZSTD_SKIPPABLEHEADERSIZE; - U32 sizeU32; - - RETURN_ERROR_IF(srcSize < ZSTD_SKIPPABLEHEADERSIZE, srcSize_wrong, ""); - - sizeU32 = MEM_readLE32((BYTE const*)src + ZSTD_FRAMEIDSIZE); - RETURN_ERROR_IF((U32)(sizeU32 + ZSTD_SKIPPABLEHEADERSIZE) < sizeU32, - frameParameter_unsupported, ""); - { - size_t const skippableSize = skippableHeaderSize + sizeU32; - RETURN_ERROR_IF(skippableSize > srcSize, srcSize_wrong, ""); - return skippableSize; - } -} - -/** ZSTD_findDecompressedSize() : - * compatible with legacy mode - * `srcSize` must be the exact length of some number of ZSTD compressed and/or - * skippable frames - * @return : decompressed size of the frames contained */ -unsigned long long ZSTD_findDecompressedSize(const void* src, size_t srcSize) -{ - unsigned long long totalDstSize = 0; - - while (srcSize >= ZSTD_startingInputLength(ZSTD_f_zstd1)) { - U32 const magicNumber = MEM_readLE32(src); - - if ((magicNumber & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) { - size_t const skippableSize = readSkippableFrameSize(src, srcSize); - if (ZSTD_isError(skippableSize)) { - return ZSTD_CONTENTSIZE_ERROR; - } - assert(skippableSize <= srcSize); - - src = (const BYTE *)src + skippableSize; - srcSize -= skippableSize; - continue; - } - - { unsigned long long const ret = ZSTD_getFrameContentSize(src, srcSize); - if (ret >= ZSTD_CONTENTSIZE_ERROR) return ret; - - /* check for overflow */ - if (totalDstSize + ret < totalDstSize) return ZSTD_CONTENTSIZE_ERROR; - totalDstSize += ret; - } - { size_t const frameSrcSize = ZSTD_findFrameCompressedSize(src, srcSize); - if (ZSTD_isError(frameSrcSize)) { - return ZSTD_CONTENTSIZE_ERROR; - } - - src = (const BYTE *)src + frameSrcSize; - srcSize -= frameSrcSize; - } - } /* while (srcSize >= ZSTD_frameHeaderSize_prefix) */ - - if (srcSize) return ZSTD_CONTENTSIZE_ERROR; - - return totalDstSize; -} - -/** ZSTD_getDecompressedSize() : - * compatible with legacy mode - * @return : decompressed size if known, 0 otherwise - note : 0 can mean any of the following : - - frame content is empty - - decompressed size field is not present in frame header - - frame header unknown / not supported - - frame header not complete (`srcSize` too small) */ -unsigned long long ZSTD_getDecompressedSize(const void* src, size_t srcSize) -{ - unsigned long long const ret = ZSTD_getFrameContentSize(src, srcSize); - ZSTD_STATIC_ASSERT(ZSTD_CONTENTSIZE_ERROR < ZSTD_CONTENTSIZE_UNKNOWN); - return (ret >= ZSTD_CONTENTSIZE_ERROR) ? 0 : ret; -} - - -/** ZSTD_decodeFrameHeader() : - * `headerSize` must be the size provided by ZSTD_frameHeaderSize(). - * If multiple DDict references are enabled, also will choose the correct DDict to use. - * @return : 0 if success, or an error code, which can be tested using ZSTD_isError() */ -static size_t ZSTD_decodeFrameHeader(ZSTD_DCtx* dctx, const void* src, size_t headerSize) -{ - size_t const result = ZSTD_getFrameHeader_advanced(&(dctx->fParams), src, headerSize, dctx->format); - if (ZSTD_isError(result)) return result; /* invalid header */ - RETURN_ERROR_IF(result>0, srcSize_wrong, "headerSize too small"); - - /* Reference DDict requested by frame if dctx references multiple ddicts */ - if (dctx->refMultipleDDicts == ZSTD_rmd_refMultipleDDicts && dctx->ddictSet) { - ZSTD_DCtx_selectFrameDDict(dctx); - } - -#ifndef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - /* Skip the dictID check in fuzzing mode, because it makes the search - * harder. - */ - RETURN_ERROR_IF(dctx->fParams.dictID && (dctx->dictID != dctx->fParams.dictID), - dictionary_wrong, ""); -#endif - dctx->validateChecksum = (dctx->fParams.checksumFlag && !dctx->forceIgnoreChecksum) ? 1 : 0; - if (dctx->validateChecksum) XXH64_reset(&dctx->xxhState, 0); - dctx->processedCSize += headerSize; - return 0; -} - -static ZSTD_frameSizeInfo ZSTD_errorFrameSizeInfo(size_t ret) -{ - ZSTD_frameSizeInfo frameSizeInfo; - frameSizeInfo.compressedSize = ret; - frameSizeInfo.decompressedBound = ZSTD_CONTENTSIZE_ERROR; - return frameSizeInfo; -} - -static ZSTD_frameSizeInfo ZSTD_findFrameSizeInfo(const void* src, size_t srcSize) -{ - ZSTD_frameSizeInfo frameSizeInfo; - ZSTD_memset(&frameSizeInfo, 0, sizeof(ZSTD_frameSizeInfo)); - -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT >= 1) - if (ZSTD_isLegacy(src, srcSize)) - return ZSTD_findFrameSizeInfoLegacy(src, srcSize); -#endif - - if ((srcSize >= ZSTD_SKIPPABLEHEADERSIZE) - && (MEM_readLE32(src) & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) { - frameSizeInfo.compressedSize = readSkippableFrameSize(src, srcSize); - assert(ZSTD_isError(frameSizeInfo.compressedSize) || - frameSizeInfo.compressedSize <= srcSize); - return frameSizeInfo; - } else { - const BYTE* ip = (const BYTE*)src; - const BYTE* const ipstart = ip; - size_t remainingSize = srcSize; - size_t nbBlocks = 0; - ZSTD_frameHeader zfh; - - /* Extract Frame Header */ - { size_t const ret = ZSTD_getFrameHeader(&zfh, src, srcSize); - if (ZSTD_isError(ret)) - return ZSTD_errorFrameSizeInfo(ret); - if (ret > 0) - return ZSTD_errorFrameSizeInfo(ERROR(srcSize_wrong)); - } - - ip += zfh.headerSize; - remainingSize -= zfh.headerSize; - - /* Iterate over each block */ - while (1) { - blockProperties_t blockProperties; - size_t const cBlockSize = ZSTD_getcBlockSize(ip, remainingSize, &blockProperties); - if (ZSTD_isError(cBlockSize)) - return ZSTD_errorFrameSizeInfo(cBlockSize); - - if (ZSTD_blockHeaderSize + cBlockSize > remainingSize) - return ZSTD_errorFrameSizeInfo(ERROR(srcSize_wrong)); - - ip += ZSTD_blockHeaderSize + cBlockSize; - remainingSize -= ZSTD_blockHeaderSize + cBlockSize; - nbBlocks++; - - if (blockProperties.lastBlock) break; - } - - /* Final frame content checksum */ - if (zfh.checksumFlag) { - if (remainingSize < 4) - return ZSTD_errorFrameSizeInfo(ERROR(srcSize_wrong)); - ip += 4; - } - - frameSizeInfo.compressedSize = (size_t)(ip - ipstart); - frameSizeInfo.decompressedBound = (zfh.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN) - ? zfh.frameContentSize - : nbBlocks * zfh.blockSizeMax; - return frameSizeInfo; - } -} - -/** ZSTD_findFrameCompressedSize() : - * compatible with legacy mode - * `src` must point to the start of a ZSTD frame, ZSTD legacy frame, or skippable frame - * `srcSize` must be at least as large as the frame contained - * @return : the compressed size of the frame starting at `src` */ -size_t ZSTD_findFrameCompressedSize(const void *src, size_t srcSize) -{ - ZSTD_frameSizeInfo const frameSizeInfo = ZSTD_findFrameSizeInfo(src, srcSize); - return frameSizeInfo.compressedSize; -} - -/** ZSTD_decompressBound() : - * compatible with legacy mode - * `src` must point to the start of a ZSTD frame or a skippeable frame - * `srcSize` must be at least as large as the frame contained - * @return : the maximum decompressed size of the compressed source - */ -unsigned long long ZSTD_decompressBound(const void* src, size_t srcSize) -{ - unsigned long long bound = 0; - /* Iterate over each frame */ - while (srcSize > 0) { - ZSTD_frameSizeInfo const frameSizeInfo = ZSTD_findFrameSizeInfo(src, srcSize); - size_t const compressedSize = frameSizeInfo.compressedSize; - unsigned long long const decompressedBound = frameSizeInfo.decompressedBound; - if (ZSTD_isError(compressedSize) || decompressedBound == ZSTD_CONTENTSIZE_ERROR) - return ZSTD_CONTENTSIZE_ERROR; - assert(srcSize >= compressedSize); - src = (const BYTE*)src + compressedSize; - srcSize -= compressedSize; - bound += decompressedBound; - } - return bound; -} - - -/*-************************************************************* - * Frame decoding - ***************************************************************/ - -/** ZSTD_insertBlock() : - * insert `src` block into `dctx` history. Useful to track uncompressed blocks. */ -size_t ZSTD_insertBlock(ZSTD_DCtx* dctx, const void* blockStart, size_t blockSize) -{ - DEBUGLOG(5, "ZSTD_insertBlock: %u bytes", (unsigned)blockSize); - ZSTD_checkContinuity(dctx, blockStart, blockSize); - dctx->previousDstEnd = (const char*)blockStart + blockSize; - return blockSize; -} - - -static size_t ZSTD_copyRawBlock(void* dst, size_t dstCapacity, - const void* src, size_t srcSize) -{ - DEBUGLOG(5, "ZSTD_copyRawBlock"); - RETURN_ERROR_IF(srcSize > dstCapacity, dstSize_tooSmall, ""); - if (dst == NULL) { - if (srcSize == 0) return 0; - RETURN_ERROR(dstBuffer_null, ""); - } - ZSTD_memcpy(dst, src, srcSize); - return srcSize; -} - -static size_t ZSTD_setRleBlock(void* dst, size_t dstCapacity, - BYTE b, - size_t regenSize) -{ - RETURN_ERROR_IF(regenSize > dstCapacity, dstSize_tooSmall, ""); - if (dst == NULL) { - if (regenSize == 0) return 0; - RETURN_ERROR(dstBuffer_null, ""); - } - ZSTD_memset(dst, b, regenSize); - return regenSize; -} - -static void ZSTD_DCtx_trace_end(ZSTD_DCtx const* dctx, U64 uncompressedSize, U64 compressedSize, unsigned streaming) -{ -#if ZSTD_TRACE - if (dctx->traceCtx) { - ZSTD_Trace trace; - ZSTD_memset(&trace, 0, sizeof(trace)); - trace.version = ZSTD_VERSION_NUMBER; - trace.streaming = streaming; - if (dctx->ddict) { - trace.dictionaryID = ZSTD_getDictID_fromDDict(dctx->ddict); - trace.dictionarySize = ZSTD_DDict_dictSize(dctx->ddict); - trace.dictionaryIsCold = dctx->ddictIsCold; - } - trace.uncompressedSize = (size_t)uncompressedSize; - trace.compressedSize = (size_t)compressedSize; - trace.dctx = dctx; - ZSTD_trace_decompress_end(dctx->traceCtx, &trace); - } -#else - (void)dctx; - (void)uncompressedSize; - (void)compressedSize; - (void)streaming; -#endif -} - - -/*! ZSTD_decompressFrame() : - * @dctx must be properly initialized - * will update *srcPtr and *srcSizePtr, - * to make *srcPtr progress by one frame. */ -static size_t ZSTD_decompressFrame(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void** srcPtr, size_t *srcSizePtr) -{ - const BYTE* const istart = (const BYTE*)(*srcPtr); - const BYTE* ip = istart; - BYTE* const ostart = (BYTE*)dst; - BYTE* const oend = dstCapacity != 0 ? ostart + dstCapacity : ostart; - BYTE* op = ostart; - size_t remainingSrcSize = *srcSizePtr; - - DEBUGLOG(4, "ZSTD_decompressFrame (srcSize:%i)", (int)*srcSizePtr); - - /* check */ - RETURN_ERROR_IF( - remainingSrcSize < ZSTD_FRAMEHEADERSIZE_MIN(dctx->format)+ZSTD_blockHeaderSize, - srcSize_wrong, ""); - - /* Frame Header */ - { size_t const frameHeaderSize = ZSTD_frameHeaderSize_internal( - ip, ZSTD_FRAMEHEADERSIZE_PREFIX(dctx->format), dctx->format); - if (ZSTD_isError(frameHeaderSize)) return frameHeaderSize; - RETURN_ERROR_IF(remainingSrcSize < frameHeaderSize+ZSTD_blockHeaderSize, - srcSize_wrong, ""); - FORWARD_IF_ERROR( ZSTD_decodeFrameHeader(dctx, ip, frameHeaderSize) , ""); - ip += frameHeaderSize; remainingSrcSize -= frameHeaderSize; - } - - /* Loop on each block */ - while (1) { - size_t decodedSize; - blockProperties_t blockProperties; - size_t const cBlockSize = ZSTD_getcBlockSize(ip, remainingSrcSize, &blockProperties); - if (ZSTD_isError(cBlockSize)) return cBlockSize; - - ip += ZSTD_blockHeaderSize; - remainingSrcSize -= ZSTD_blockHeaderSize; - RETURN_ERROR_IF(cBlockSize > remainingSrcSize, srcSize_wrong, ""); - - switch(blockProperties.blockType) - { - case bt_compressed: - decodedSize = ZSTD_decompressBlock_internal(dctx, op, (size_t)(oend-op), ip, cBlockSize, /* frame */ 1); - break; - case bt_raw : - decodedSize = ZSTD_copyRawBlock(op, (size_t)(oend-op), ip, cBlockSize); - break; - case bt_rle : - decodedSize = ZSTD_setRleBlock(op, (size_t)(oend-op), *ip, blockProperties.origSize); - break; - case bt_reserved : - default: - RETURN_ERROR(corruption_detected, "invalid block type"); - } - - if (ZSTD_isError(decodedSize)) return decodedSize; - if (dctx->validateChecksum) - XXH64_update(&dctx->xxhState, op, decodedSize); - if (decodedSize != 0) - op += decodedSize; - assert(ip != NULL); - ip += cBlockSize; - remainingSrcSize -= cBlockSize; - if (blockProperties.lastBlock) break; - } - - if (dctx->fParams.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN) { - RETURN_ERROR_IF((U64)(op-ostart) != dctx->fParams.frameContentSize, - corruption_detected, ""); - } - if (dctx->fParams.checksumFlag) { /* Frame content checksum verification */ - RETURN_ERROR_IF(remainingSrcSize<4, checksum_wrong, ""); - if (!dctx->forceIgnoreChecksum) { - U32 const checkCalc = (U32)XXH64_digest(&dctx->xxhState); - U32 checkRead; - checkRead = MEM_readLE32(ip); - RETURN_ERROR_IF(checkRead != checkCalc, checksum_wrong, ""); - } - ip += 4; - remainingSrcSize -= 4; - } - ZSTD_DCtx_trace_end(dctx, (U64)(op-ostart), (U64)(ip-istart), /* streaming */ 0); - /* Allow caller to get size read */ - *srcPtr = ip; - *srcSizePtr = remainingSrcSize; - return (size_t)(op-ostart); -} - -static size_t ZSTD_decompressMultiFrame(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict, size_t dictSize, - const ZSTD_DDict* ddict) -{ - void* const dststart = dst; - int moreThan1Frame = 0; - - DEBUGLOG(5, "ZSTD_decompressMultiFrame"); - assert(dict==NULL || ddict==NULL); /* either dict or ddict set, not both */ - - if (ddict) { - dict = ZSTD_DDict_dictContent(ddict); - dictSize = ZSTD_DDict_dictSize(ddict); - } - - while (srcSize >= ZSTD_startingInputLength(dctx->format)) { - -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT >= 1) - if (ZSTD_isLegacy(src, srcSize)) { - size_t decodedSize; - size_t const frameSize = ZSTD_findFrameCompressedSizeLegacy(src, srcSize); - if (ZSTD_isError(frameSize)) return frameSize; - RETURN_ERROR_IF(dctx->staticSize, memory_allocation, - "legacy support is not compatible with static dctx"); - - decodedSize = ZSTD_decompressLegacy(dst, dstCapacity, src, frameSize, dict, dictSize); - if (ZSTD_isError(decodedSize)) return decodedSize; - - assert(decodedSize <= dstCapacity); - dst = (BYTE*)dst + decodedSize; - dstCapacity -= decodedSize; - - src = (const BYTE*)src + frameSize; - srcSize -= frameSize; - - continue; - } -#endif - - { U32 const magicNumber = MEM_readLE32(src); - DEBUGLOG(4, "reading magic number %08X (expecting %08X)", - (unsigned)magicNumber, ZSTD_MAGICNUMBER); - if ((magicNumber & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) { - size_t const skippableSize = readSkippableFrameSize(src, srcSize); - FORWARD_IF_ERROR(skippableSize, "readSkippableFrameSize failed"); - assert(skippableSize <= srcSize); - - src = (const BYTE *)src + skippableSize; - srcSize -= skippableSize; - continue; - } } - - if (ddict) { - /* we were called from ZSTD_decompress_usingDDict */ - FORWARD_IF_ERROR(ZSTD_decompressBegin_usingDDict(dctx, ddict), ""); - } else { - /* this will initialize correctly with no dict if dict == NULL, so - * use this in all cases but ddict */ - FORWARD_IF_ERROR(ZSTD_decompressBegin_usingDict(dctx, dict, dictSize), ""); - } - ZSTD_checkContinuity(dctx, dst, dstCapacity); - - { const size_t res = ZSTD_decompressFrame(dctx, dst, dstCapacity, - &src, &srcSize); - RETURN_ERROR_IF( - (ZSTD_getErrorCode(res) == ZSTD_error_prefix_unknown) - && (moreThan1Frame==1), - srcSize_wrong, - "At least one frame successfully completed, " - "but following bytes are garbage: " - "it's more likely to be a srcSize error, " - "specifying more input bytes than size of frame(s). " - "Note: one could be unlucky, it might be a corruption error instead, " - "happening right at the place where we expect zstd magic bytes. " - "But this is _much_ less likely than a srcSize field error."); - if (ZSTD_isError(res)) return res; - assert(res <= dstCapacity); - if (res != 0) - dst = (BYTE*)dst + res; - dstCapacity -= res; - } - moreThan1Frame = 1; - } /* while (srcSize >= ZSTD_frameHeaderSize_prefix) */ - - RETURN_ERROR_IF(srcSize, srcSize_wrong, "input not entirely consumed"); - - return (size_t)((BYTE*)dst - (BYTE*)dststart); -} - -size_t ZSTD_decompress_usingDict(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const void* dict, size_t dictSize) -{ - return ZSTD_decompressMultiFrame(dctx, dst, dstCapacity, src, srcSize, dict, dictSize, NULL); -} - - -static ZSTD_DDict const* ZSTD_getDDict(ZSTD_DCtx* dctx) -{ - switch (dctx->dictUses) { - default: - assert(0 /* Impossible */); - /* fall-through */ - case ZSTD_dont_use: - ZSTD_clearDict(dctx); - return NULL; - case ZSTD_use_indefinitely: - return dctx->ddict; - case ZSTD_use_once: - dctx->dictUses = ZSTD_dont_use; - return dctx->ddict; - } -} - -size_t ZSTD_decompressDCtx(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize) -{ - return ZSTD_decompress_usingDDict(dctx, dst, dstCapacity, src, srcSize, ZSTD_getDDict(dctx)); -} - - -size_t ZSTD_decompress(void* dst, size_t dstCapacity, const void* src, size_t srcSize) -{ -#if defined(ZSTD_HEAPMODE) && (ZSTD_HEAPMODE>=1) - size_t regenSize; - ZSTD_DCtx* const dctx = ZSTD_createDCtx(); - RETURN_ERROR_IF(dctx==NULL, memory_allocation, "NULL pointer!"); - regenSize = ZSTD_decompressDCtx(dctx, dst, dstCapacity, src, srcSize); - ZSTD_freeDCtx(dctx); - return regenSize; -#else /* stack mode */ - ZSTD_DCtx dctx; - ZSTD_initDCtx_internal(&dctx); - return ZSTD_decompressDCtx(&dctx, dst, dstCapacity, src, srcSize); -#endif -} - - -/*-************************************** -* Advanced Streaming Decompression API -* Bufferless and synchronous -****************************************/ -size_t ZSTD_nextSrcSizeToDecompress(ZSTD_DCtx* dctx) { return dctx->expected; } - -/** - * Similar to ZSTD_nextSrcSizeToDecompress(), but when when a block input can be streamed, - * we allow taking a partial block as the input. Currently only raw uncompressed blocks can - * be streamed. - * - * For blocks that can be streamed, this allows us to reduce the latency until we produce - * output, and avoid copying the input. - * - * @param inputSize - The total amount of input that the caller currently has. - */ -static size_t ZSTD_nextSrcSizeToDecompressWithInputSize(ZSTD_DCtx* dctx, size_t inputSize) { - if (!(dctx->stage == ZSTDds_decompressBlock || dctx->stage == ZSTDds_decompressLastBlock)) - return dctx->expected; - if (dctx->bType != bt_raw) - return dctx->expected; - return MIN(MAX(inputSize, 1), dctx->expected); -} - -ZSTD_nextInputType_e ZSTD_nextInputType(ZSTD_DCtx* dctx) { - switch(dctx->stage) - { - default: /* should not happen */ - assert(0); - case ZSTDds_getFrameHeaderSize: - case ZSTDds_decodeFrameHeader: - return ZSTDnit_frameHeader; - case ZSTDds_decodeBlockHeader: - return ZSTDnit_blockHeader; - case ZSTDds_decompressBlock: - return ZSTDnit_block; - case ZSTDds_decompressLastBlock: - return ZSTDnit_lastBlock; - case ZSTDds_checkChecksum: - return ZSTDnit_checksum; - case ZSTDds_decodeSkippableHeader: - case ZSTDds_skipFrame: - return ZSTDnit_skippableFrame; - } -} - -static int ZSTD_isSkipFrame(ZSTD_DCtx* dctx) { return dctx->stage == ZSTDds_skipFrame; } - -/** ZSTD_decompressContinue() : - * srcSize : must be the exact nb of bytes expected (see ZSTD_nextSrcSizeToDecompress()) - * @return : nb of bytes generated into `dst` (necessarily <= `dstCapacity) - * or an error code, which can be tested using ZSTD_isError() */ -size_t ZSTD_decompressContinue(ZSTD_DCtx* dctx, void* dst, size_t dstCapacity, const void* src, size_t srcSize) -{ - DEBUGLOG(5, "ZSTD_decompressContinue (srcSize:%u)", (unsigned)srcSize); - /* Sanity check */ - RETURN_ERROR_IF(srcSize != ZSTD_nextSrcSizeToDecompressWithInputSize(dctx, srcSize), srcSize_wrong, "not allowed"); - ZSTD_checkContinuity(dctx, dst, dstCapacity); - - dctx->processedCSize += srcSize; - - switch (dctx->stage) - { - case ZSTDds_getFrameHeaderSize : - assert(src != NULL); - if (dctx->format == ZSTD_f_zstd1) { /* allows header */ - assert(srcSize >= ZSTD_FRAMEIDSIZE); /* to read skippable magic number */ - if ((MEM_readLE32(src) & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) { /* skippable frame */ - ZSTD_memcpy(dctx->headerBuffer, src, srcSize); - dctx->expected = ZSTD_SKIPPABLEHEADERSIZE - srcSize; /* remaining to load to get full skippable frame header */ - dctx->stage = ZSTDds_decodeSkippableHeader; - return 0; - } } - dctx->headerSize = ZSTD_frameHeaderSize_internal(src, srcSize, dctx->format); - if (ZSTD_isError(dctx->headerSize)) return dctx->headerSize; - ZSTD_memcpy(dctx->headerBuffer, src, srcSize); - dctx->expected = dctx->headerSize - srcSize; - dctx->stage = ZSTDds_decodeFrameHeader; - return 0; - - case ZSTDds_decodeFrameHeader: - assert(src != NULL); - ZSTD_memcpy(dctx->headerBuffer + (dctx->headerSize - srcSize), src, srcSize); - FORWARD_IF_ERROR(ZSTD_decodeFrameHeader(dctx, dctx->headerBuffer, dctx->headerSize), ""); - dctx->expected = ZSTD_blockHeaderSize; - dctx->stage = ZSTDds_decodeBlockHeader; - return 0; - - case ZSTDds_decodeBlockHeader: - { blockProperties_t bp; - size_t const cBlockSize = ZSTD_getcBlockSize(src, ZSTD_blockHeaderSize, &bp); - if (ZSTD_isError(cBlockSize)) return cBlockSize; - RETURN_ERROR_IF(cBlockSize > dctx->fParams.blockSizeMax, corruption_detected, "Block Size Exceeds Maximum"); - dctx->expected = cBlockSize; - dctx->bType = bp.blockType; - dctx->rleSize = bp.origSize; - if (cBlockSize) { - dctx->stage = bp.lastBlock ? ZSTDds_decompressLastBlock : ZSTDds_decompressBlock; - return 0; - } - /* empty block */ - if (bp.lastBlock) { - if (dctx->fParams.checksumFlag) { - dctx->expected = 4; - dctx->stage = ZSTDds_checkChecksum; - } else { - dctx->expected = 0; /* end of frame */ - dctx->stage = ZSTDds_getFrameHeaderSize; - } - } else { - dctx->expected = ZSTD_blockHeaderSize; /* jump to next header */ - dctx->stage = ZSTDds_decodeBlockHeader; - } - return 0; - } - - case ZSTDds_decompressLastBlock: - case ZSTDds_decompressBlock: - DEBUGLOG(5, "ZSTD_decompressContinue: case ZSTDds_decompressBlock"); - { size_t rSize; - switch(dctx->bType) - { - case bt_compressed: - DEBUGLOG(5, "ZSTD_decompressContinue: case bt_compressed"); - rSize = ZSTD_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize, /* frame */ 1); - dctx->expected = 0; /* Streaming not supported */ - break; - case bt_raw : - assert(srcSize <= dctx->expected); - rSize = ZSTD_copyRawBlock(dst, dstCapacity, src, srcSize); - FORWARD_IF_ERROR(rSize, "ZSTD_copyRawBlock failed"); - assert(rSize == srcSize); - dctx->expected -= rSize; - break; - case bt_rle : - rSize = ZSTD_setRleBlock(dst, dstCapacity, *(const BYTE*)src, dctx->rleSize); - dctx->expected = 0; /* Streaming not supported */ - break; - case bt_reserved : /* should never happen */ - default: - RETURN_ERROR(corruption_detected, "invalid block type"); - } - FORWARD_IF_ERROR(rSize, ""); - RETURN_ERROR_IF(rSize > dctx->fParams.blockSizeMax, corruption_detected, "Decompressed Block Size Exceeds Maximum"); - DEBUGLOG(5, "ZSTD_decompressContinue: decoded size from block : %u", (unsigned)rSize); - dctx->decodedSize += rSize; - if (dctx->validateChecksum) XXH64_update(&dctx->xxhState, dst, rSize); - dctx->previousDstEnd = (char*)dst + rSize; - - /* Stay on the same stage until we are finished streaming the block. */ - if (dctx->expected > 0) { - return rSize; - } - - if (dctx->stage == ZSTDds_decompressLastBlock) { /* end of frame */ - DEBUGLOG(4, "ZSTD_decompressContinue: decoded size from frame : %u", (unsigned)dctx->decodedSize); - RETURN_ERROR_IF( - dctx->fParams.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN - && dctx->decodedSize != dctx->fParams.frameContentSize, - corruption_detected, ""); - if (dctx->fParams.checksumFlag) { /* another round for frame checksum */ - dctx->expected = 4; - dctx->stage = ZSTDds_checkChecksum; - } else { - ZSTD_DCtx_trace_end(dctx, dctx->decodedSize, dctx->processedCSize, /* streaming */ 1); - dctx->expected = 0; /* ends here */ - dctx->stage = ZSTDds_getFrameHeaderSize; - } - } else { - dctx->stage = ZSTDds_decodeBlockHeader; - dctx->expected = ZSTD_blockHeaderSize; - } - return rSize; - } - - case ZSTDds_checkChecksum: - assert(srcSize == 4); /* guaranteed by dctx->expected */ - { - if (dctx->validateChecksum) { - U32 const h32 = (U32)XXH64_digest(&dctx->xxhState); - U32 const check32 = MEM_readLE32(src); - DEBUGLOG(4, "ZSTD_decompressContinue: checksum : calculated %08X :: %08X read", (unsigned)h32, (unsigned)check32); - RETURN_ERROR_IF(check32 != h32, checksum_wrong, ""); - } - ZSTD_DCtx_trace_end(dctx, dctx->decodedSize, dctx->processedCSize, /* streaming */ 1); - dctx->expected = 0; - dctx->stage = ZSTDds_getFrameHeaderSize; - return 0; - } - - case ZSTDds_decodeSkippableHeader: - assert(src != NULL); - assert(srcSize <= ZSTD_SKIPPABLEHEADERSIZE); - ZSTD_memcpy(dctx->headerBuffer + (ZSTD_SKIPPABLEHEADERSIZE - srcSize), src, srcSize); /* complete skippable header */ - dctx->expected = MEM_readLE32(dctx->headerBuffer + ZSTD_FRAMEIDSIZE); /* note : dctx->expected can grow seriously large, beyond local buffer size */ - dctx->stage = ZSTDds_skipFrame; - return 0; - - case ZSTDds_skipFrame: - dctx->expected = 0; - dctx->stage = ZSTDds_getFrameHeaderSize; - return 0; - - default: - assert(0); /* impossible */ - RETURN_ERROR(GENERIC, "impossible to reach"); /* some compiler require default to do something */ - } -} - - -static size_t ZSTD_refDictContent(ZSTD_DCtx* dctx, const void* dict, size_t dictSize) -{ - dctx->dictEnd = dctx->previousDstEnd; - dctx->virtualStart = (const char*)dict - ((const char*)(dctx->previousDstEnd) - (const char*)(dctx->prefixStart)); - dctx->prefixStart = dict; - dctx->previousDstEnd = (const char*)dict + dictSize; -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION - dctx->dictContentBeginForFuzzing = dctx->prefixStart; - dctx->dictContentEndForFuzzing = dctx->previousDstEnd; -#endif - return 0; -} - -/*! ZSTD_loadDEntropy() : - * dict : must point at beginning of a valid zstd dictionary. - * @return : size of entropy tables read */ -size_t -ZSTD_loadDEntropy(ZSTD_entropyDTables_t* entropy, - const void* const dict, size_t const dictSize) -{ - const BYTE* dictPtr = (const BYTE*)dict; - const BYTE* const dictEnd = dictPtr + dictSize; - - RETURN_ERROR_IF(dictSize <= 8, dictionary_corrupted, "dict is too small"); - assert(MEM_readLE32(dict) == ZSTD_MAGIC_DICTIONARY); /* dict must be valid */ - dictPtr += 8; /* skip header = magic + dictID */ - - ZSTD_STATIC_ASSERT(offsetof(ZSTD_entropyDTables_t, OFTable) == offsetof(ZSTD_entropyDTables_t, LLTable) + sizeof(entropy->LLTable)); - ZSTD_STATIC_ASSERT(offsetof(ZSTD_entropyDTables_t, MLTable) == offsetof(ZSTD_entropyDTables_t, OFTable) + sizeof(entropy->OFTable)); - ZSTD_STATIC_ASSERT(sizeof(entropy->LLTable) + sizeof(entropy->OFTable) + sizeof(entropy->MLTable) >= HUF_DECOMPRESS_WORKSPACE_SIZE); - { void* const workspace = &entropy->LLTable; /* use fse tables as temporary workspace; implies fse tables are grouped together */ - size_t const workspaceSize = sizeof(entropy->LLTable) + sizeof(entropy->OFTable) + sizeof(entropy->MLTable); -#ifdef HUF_FORCE_DECOMPRESS_X1 - /* in minimal huffman, we always use X1 variants */ - size_t const hSize = HUF_readDTableX1_wksp(entropy->hufTable, - dictPtr, dictEnd - dictPtr, - workspace, workspaceSize); -#else - size_t const hSize = HUF_readDTableX2_wksp(entropy->hufTable, - dictPtr, (size_t)(dictEnd - dictPtr), - workspace, workspaceSize); -#endif - RETURN_ERROR_IF(HUF_isError(hSize), dictionary_corrupted, ""); - dictPtr += hSize; - } - - { short offcodeNCount[MaxOff+1]; - unsigned offcodeMaxValue = MaxOff, offcodeLog; - size_t const offcodeHeaderSize = FSE_readNCount(offcodeNCount, &offcodeMaxValue, &offcodeLog, dictPtr, (size_t)(dictEnd-dictPtr)); - RETURN_ERROR_IF(FSE_isError(offcodeHeaderSize), dictionary_corrupted, ""); - RETURN_ERROR_IF(offcodeMaxValue > MaxOff, dictionary_corrupted, ""); - RETURN_ERROR_IF(offcodeLog > OffFSELog, dictionary_corrupted, ""); - ZSTD_buildFSETable( entropy->OFTable, - offcodeNCount, offcodeMaxValue, - OF_base, OF_bits, - offcodeLog, - entropy->workspace, sizeof(entropy->workspace), - /* bmi2 */0); - dictPtr += offcodeHeaderSize; - } - - { short matchlengthNCount[MaxML+1]; - unsigned matchlengthMaxValue = MaxML, matchlengthLog; - size_t const matchlengthHeaderSize = FSE_readNCount(matchlengthNCount, &matchlengthMaxValue, &matchlengthLog, dictPtr, (size_t)(dictEnd-dictPtr)); - RETURN_ERROR_IF(FSE_isError(matchlengthHeaderSize), dictionary_corrupted, ""); - RETURN_ERROR_IF(matchlengthMaxValue > MaxML, dictionary_corrupted, ""); - RETURN_ERROR_IF(matchlengthLog > MLFSELog, dictionary_corrupted, ""); - ZSTD_buildFSETable( entropy->MLTable, - matchlengthNCount, matchlengthMaxValue, - ML_base, ML_bits, - matchlengthLog, - entropy->workspace, sizeof(entropy->workspace), - /* bmi2 */ 0); - dictPtr += matchlengthHeaderSize; - } - - { short litlengthNCount[MaxLL+1]; - unsigned litlengthMaxValue = MaxLL, litlengthLog; - size_t const litlengthHeaderSize = FSE_readNCount(litlengthNCount, &litlengthMaxValue, &litlengthLog, dictPtr, (size_t)(dictEnd-dictPtr)); - RETURN_ERROR_IF(FSE_isError(litlengthHeaderSize), dictionary_corrupted, ""); - RETURN_ERROR_IF(litlengthMaxValue > MaxLL, dictionary_corrupted, ""); - RETURN_ERROR_IF(litlengthLog > LLFSELog, dictionary_corrupted, ""); - ZSTD_buildFSETable( entropy->LLTable, - litlengthNCount, litlengthMaxValue, - LL_base, LL_bits, - litlengthLog, - entropy->workspace, sizeof(entropy->workspace), - /* bmi2 */ 0); - dictPtr += litlengthHeaderSize; - } - - RETURN_ERROR_IF(dictPtr+12 > dictEnd, dictionary_corrupted, ""); - { int i; - size_t const dictContentSize = (size_t)(dictEnd - (dictPtr+12)); - for (i=0; i<3; i++) { - U32 const rep = MEM_readLE32(dictPtr); dictPtr += 4; - RETURN_ERROR_IF(rep==0 || rep > dictContentSize, - dictionary_corrupted, ""); - entropy->rep[i] = rep; - } } - - return (size_t)(dictPtr - (const BYTE*)dict); -} - -static size_t ZSTD_decompress_insertDictionary(ZSTD_DCtx* dctx, const void* dict, size_t dictSize) -{ - if (dictSize < 8) return ZSTD_refDictContent(dctx, dict, dictSize); - { U32 const magic = MEM_readLE32(dict); - if (magic != ZSTD_MAGIC_DICTIONARY) { - return ZSTD_refDictContent(dctx, dict, dictSize); /* pure content mode */ - } } - dctx->dictID = MEM_readLE32((const char*)dict + ZSTD_FRAMEIDSIZE); - - /* load entropy tables */ - { size_t const eSize = ZSTD_loadDEntropy(&dctx->entropy, dict, dictSize); - RETURN_ERROR_IF(ZSTD_isError(eSize), dictionary_corrupted, ""); - dict = (const char*)dict + eSize; - dictSize -= eSize; - } - dctx->litEntropy = dctx->fseEntropy = 1; - - /* reference dictionary content */ - return ZSTD_refDictContent(dctx, dict, dictSize); -} - -size_t ZSTD_decompressBegin(ZSTD_DCtx* dctx) -{ - assert(dctx != NULL); -#if ZSTD_TRACE - dctx->traceCtx = ZSTD_trace_decompress_begin(dctx); -#endif - dctx->expected = ZSTD_startingInputLength(dctx->format); /* dctx->format must be properly set */ - dctx->stage = ZSTDds_getFrameHeaderSize; - dctx->processedCSize = 0; - dctx->decodedSize = 0; - dctx->previousDstEnd = NULL; - dctx->prefixStart = NULL; - dctx->virtualStart = NULL; - dctx->dictEnd = NULL; - dctx->entropy.hufTable[0] = (HUF_DTable)((HufLog)*0x1000001); /* cover both little and big endian */ - dctx->litEntropy = dctx->fseEntropy = 0; - dctx->dictID = 0; - dctx->bType = bt_reserved; - ZSTD_STATIC_ASSERT(sizeof(dctx->entropy.rep) == sizeof(repStartValue)); - ZSTD_memcpy(dctx->entropy.rep, repStartValue, sizeof(repStartValue)); /* initial repcodes */ - dctx->LLTptr = dctx->entropy.LLTable; - dctx->MLTptr = dctx->entropy.MLTable; - dctx->OFTptr = dctx->entropy.OFTable; - dctx->HUFptr = dctx->entropy.hufTable; - return 0; -} - -size_t ZSTD_decompressBegin_usingDict(ZSTD_DCtx* dctx, const void* dict, size_t dictSize) -{ - FORWARD_IF_ERROR( ZSTD_decompressBegin(dctx) , ""); - if (dict && dictSize) - RETURN_ERROR_IF( - ZSTD_isError(ZSTD_decompress_insertDictionary(dctx, dict, dictSize)), - dictionary_corrupted, ""); - return 0; -} - - -/* ====== ZSTD_DDict ====== */ - -size_t ZSTD_decompressBegin_usingDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict) -{ - DEBUGLOG(4, "ZSTD_decompressBegin_usingDDict"); - assert(dctx != NULL); - if (ddict) { - const char* const dictStart = (const char*)ZSTD_DDict_dictContent(ddict); - size_t const dictSize = ZSTD_DDict_dictSize(ddict); - const void* const dictEnd = dictStart + dictSize; - dctx->ddictIsCold = (dctx->dictEnd != dictEnd); - DEBUGLOG(4, "DDict is %s", - dctx->ddictIsCold ? "~cold~" : "hot!"); - } - FORWARD_IF_ERROR( ZSTD_decompressBegin(dctx) , ""); - if (ddict) { /* NULL ddict is equivalent to no dictionary */ - ZSTD_copyDDictParameters(dctx, ddict); - } - return 0; -} - -/*! ZSTD_getDictID_fromDict() : - * Provides the dictID stored within dictionary. - * if @return == 0, the dictionary is not conformant with Zstandard specification. - * It can still be loaded, but as a content-only dictionary. */ -unsigned ZSTD_getDictID_fromDict(const void* dict, size_t dictSize) -{ - if (dictSize < 8) return 0; - if (MEM_readLE32(dict) != ZSTD_MAGIC_DICTIONARY) return 0; - return MEM_readLE32((const char*)dict + ZSTD_FRAMEIDSIZE); -} - -/*! ZSTD_getDictID_fromFrame() : - * Provides the dictID required to decompress frame stored within `src`. - * If @return == 0, the dictID could not be decoded. - * This could for one of the following reasons : - * - The frame does not require a dictionary (most common case). - * - The frame was built with dictID intentionally removed. - * Needed dictionary is a hidden information. - * Note : this use case also happens when using a non-conformant dictionary. - * - `srcSize` is too small, and as a result, frame header could not be decoded. - * Note : possible if `srcSize < ZSTD_FRAMEHEADERSIZE_MAX`. - * - This is not a Zstandard frame. - * When identifying the exact failure cause, it's possible to use - * ZSTD_getFrameHeader(), which will provide a more precise error code. */ -unsigned ZSTD_getDictID_fromFrame(const void* src, size_t srcSize) -{ - ZSTD_frameHeader zfp = { 0, 0, 0, ZSTD_frame, 0, 0, 0 }; - size_t const hError = ZSTD_getFrameHeader(&zfp, src, srcSize); - if (ZSTD_isError(hError)) return 0; - return zfp.dictID; -} - - -/*! ZSTD_decompress_usingDDict() : -* Decompression using a pre-digested Dictionary -* Use dictionary without significant overhead. */ -size_t ZSTD_decompress_usingDDict(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, - const ZSTD_DDict* ddict) -{ - /* pass content and size in case legacy frames are encountered */ - return ZSTD_decompressMultiFrame(dctx, dst, dstCapacity, src, srcSize, - NULL, 0, - ddict); -} - - -/*===================================== -* Streaming decompression -*====================================*/ - -ZSTD_DStream* ZSTD_createDStream(void) -{ - DEBUGLOG(3, "ZSTD_createDStream"); - return ZSTD_createDStream_advanced(ZSTD_defaultCMem); -} - -ZSTD_DStream* ZSTD_initStaticDStream(void *workspace, size_t workspaceSize) -{ - return ZSTD_initStaticDCtx(workspace, workspaceSize); -} - -ZSTD_DStream* ZSTD_createDStream_advanced(ZSTD_customMem customMem) -{ - return ZSTD_createDCtx_advanced(customMem); -} - -size_t ZSTD_freeDStream(ZSTD_DStream* zds) -{ - return ZSTD_freeDCtx(zds); -} - - -/* *** Initialization *** */ - -size_t ZSTD_DStreamInSize(void) { return ZSTD_BLOCKSIZE_MAX + ZSTD_blockHeaderSize; } -size_t ZSTD_DStreamOutSize(void) { return ZSTD_BLOCKSIZE_MAX; } - -size_t ZSTD_DCtx_loadDictionary_advanced(ZSTD_DCtx* dctx, - const void* dict, size_t dictSize, - ZSTD_dictLoadMethod_e dictLoadMethod, - ZSTD_dictContentType_e dictContentType) -{ - RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong, ""); - ZSTD_clearDict(dctx); - if (dict && dictSize != 0) { - dctx->ddictLocal = ZSTD_createDDict_advanced(dict, dictSize, dictLoadMethod, dictContentType, dctx->customMem); - RETURN_ERROR_IF(dctx->ddictLocal == NULL, memory_allocation, "NULL pointer!"); - dctx->ddict = dctx->ddictLocal; - dctx->dictUses = ZSTD_use_indefinitely; - } - return 0; -} - -size_t ZSTD_DCtx_loadDictionary_byReference(ZSTD_DCtx* dctx, const void* dict, size_t dictSize) -{ - return ZSTD_DCtx_loadDictionary_advanced(dctx, dict, dictSize, ZSTD_dlm_byRef, ZSTD_dct_auto); -} - -size_t ZSTD_DCtx_loadDictionary(ZSTD_DCtx* dctx, const void* dict, size_t dictSize) -{ - return ZSTD_DCtx_loadDictionary_advanced(dctx, dict, dictSize, ZSTD_dlm_byCopy, ZSTD_dct_auto); -} - -size_t ZSTD_DCtx_refPrefix_advanced(ZSTD_DCtx* dctx, const void* prefix, size_t prefixSize, ZSTD_dictContentType_e dictContentType) -{ - FORWARD_IF_ERROR(ZSTD_DCtx_loadDictionary_advanced(dctx, prefix, prefixSize, ZSTD_dlm_byRef, dictContentType), ""); - dctx->dictUses = ZSTD_use_once; - return 0; -} - -size_t ZSTD_DCtx_refPrefix(ZSTD_DCtx* dctx, const void* prefix, size_t prefixSize) -{ - return ZSTD_DCtx_refPrefix_advanced(dctx, prefix, prefixSize, ZSTD_dct_rawContent); -} - - -/* ZSTD_initDStream_usingDict() : - * return : expected size, aka ZSTD_startingInputLength(). - * this function cannot fail */ -size_t ZSTD_initDStream_usingDict(ZSTD_DStream* zds, const void* dict, size_t dictSize) -{ - DEBUGLOG(4, "ZSTD_initDStream_usingDict"); - FORWARD_IF_ERROR( ZSTD_DCtx_reset(zds, ZSTD_reset_session_only) , ""); - FORWARD_IF_ERROR( ZSTD_DCtx_loadDictionary(zds, dict, dictSize) , ""); - return ZSTD_startingInputLength(zds->format); -} - -/* note : this variant can't fail */ -size_t ZSTD_initDStream(ZSTD_DStream* zds) -{ - DEBUGLOG(4, "ZSTD_initDStream"); - return ZSTD_initDStream_usingDDict(zds, NULL); -} - -/* ZSTD_initDStream_usingDDict() : - * ddict will just be referenced, and must outlive decompression session - * this function cannot fail */ -size_t ZSTD_initDStream_usingDDict(ZSTD_DStream* dctx, const ZSTD_DDict* ddict) -{ - FORWARD_IF_ERROR( ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only) , ""); - FORWARD_IF_ERROR( ZSTD_DCtx_refDDict(dctx, ddict) , ""); - return ZSTD_startingInputLength(dctx->format); -} - -/* ZSTD_resetDStream() : - * return : expected size, aka ZSTD_startingInputLength(). - * this function cannot fail */ -size_t ZSTD_resetDStream(ZSTD_DStream* dctx) -{ - FORWARD_IF_ERROR(ZSTD_DCtx_reset(dctx, ZSTD_reset_session_only), ""); - return ZSTD_startingInputLength(dctx->format); -} - - -size_t ZSTD_DCtx_refDDict(ZSTD_DCtx* dctx, const ZSTD_DDict* ddict) -{ - RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong, ""); - ZSTD_clearDict(dctx); - if (ddict) { - dctx->ddict = ddict; - dctx->dictUses = ZSTD_use_indefinitely; - if (dctx->refMultipleDDicts == ZSTD_rmd_refMultipleDDicts) { - if (dctx->ddictSet == NULL) { - dctx->ddictSet = ZSTD_createDDictHashSet(dctx->customMem); - if (!dctx->ddictSet) { - RETURN_ERROR(memory_allocation, "Failed to allocate memory for hash set!"); - } - } - assert(!dctx->staticSize); /* Impossible: ddictSet cannot have been allocated if static dctx */ - FORWARD_IF_ERROR(ZSTD_DDictHashSet_addDDict(dctx->ddictSet, ddict, dctx->customMem), ""); - } - } - return 0; -} - -/* ZSTD_DCtx_setMaxWindowSize() : - * note : no direct equivalence in ZSTD_DCtx_setParameter, - * since this version sets windowSize, and the other sets windowLog */ -size_t ZSTD_DCtx_setMaxWindowSize(ZSTD_DCtx* dctx, size_t maxWindowSize) -{ - ZSTD_bounds const bounds = ZSTD_dParam_getBounds(ZSTD_d_windowLogMax); - size_t const min = (size_t)1 << bounds.lowerBound; - size_t const max = (size_t)1 << bounds.upperBound; - RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong, ""); - RETURN_ERROR_IF(maxWindowSize < min, parameter_outOfBound, ""); - RETURN_ERROR_IF(maxWindowSize > max, parameter_outOfBound, ""); - dctx->maxWindowSize = maxWindowSize; - return 0; -} - -size_t ZSTD_DCtx_setFormat(ZSTD_DCtx* dctx, ZSTD_format_e format) -{ - return ZSTD_DCtx_setParameter(dctx, ZSTD_d_format, (int)format); -} - -ZSTD_bounds ZSTD_dParam_getBounds(ZSTD_dParameter dParam) -{ - ZSTD_bounds bounds = { 0, 0, 0 }; - switch(dParam) { - case ZSTD_d_windowLogMax: - bounds.lowerBound = ZSTD_WINDOWLOG_ABSOLUTEMIN; - bounds.upperBound = ZSTD_WINDOWLOG_MAX; - return bounds; - case ZSTD_d_format: - bounds.lowerBound = (int)ZSTD_f_zstd1; - bounds.upperBound = (int)ZSTD_f_zstd1_magicless; - ZSTD_STATIC_ASSERT(ZSTD_f_zstd1 < ZSTD_f_zstd1_magicless); - return bounds; - case ZSTD_d_stableOutBuffer: - bounds.lowerBound = (int)ZSTD_bm_buffered; - bounds.upperBound = (int)ZSTD_bm_stable; - return bounds; - case ZSTD_d_forceIgnoreChecksum: - bounds.lowerBound = (int)ZSTD_d_validateChecksum; - bounds.upperBound = (int)ZSTD_d_ignoreChecksum; - return bounds; - case ZSTD_d_refMultipleDDicts: - bounds.lowerBound = (int)ZSTD_rmd_refSingleDDict; - bounds.upperBound = (int)ZSTD_rmd_refMultipleDDicts; - return bounds; - default:; - } - bounds.error = ERROR(parameter_unsupported); - return bounds; -} - -/* ZSTD_dParam_withinBounds: - * @return 1 if value is within dParam bounds, - * 0 otherwise */ -static int ZSTD_dParam_withinBounds(ZSTD_dParameter dParam, int value) -{ - ZSTD_bounds const bounds = ZSTD_dParam_getBounds(dParam); - if (ZSTD_isError(bounds.error)) return 0; - if (value < bounds.lowerBound) return 0; - if (value > bounds.upperBound) return 0; - return 1; -} - -#define CHECK_DBOUNDS(p,v) { \ - RETURN_ERROR_IF(!ZSTD_dParam_withinBounds(p, v), parameter_outOfBound, ""); \ -} - -size_t ZSTD_DCtx_getParameter(ZSTD_DCtx* dctx, ZSTD_dParameter param, int* value) -{ - switch (param) { - case ZSTD_d_windowLogMax: - *value = (int)ZSTD_highbit32((U32)dctx->maxWindowSize); - return 0; - case ZSTD_d_format: - *value = (int)dctx->format; - return 0; - case ZSTD_d_stableOutBuffer: - *value = (int)dctx->outBufferMode; - return 0; - case ZSTD_d_forceIgnoreChecksum: - *value = (int)dctx->forceIgnoreChecksum; - return 0; - case ZSTD_d_refMultipleDDicts: - *value = (int)dctx->refMultipleDDicts; - return 0; - default:; - } - RETURN_ERROR(parameter_unsupported, ""); -} - -size_t ZSTD_DCtx_setParameter(ZSTD_DCtx* dctx, ZSTD_dParameter dParam, int value) -{ - RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong, ""); - switch(dParam) { - case ZSTD_d_windowLogMax: - if (value == 0) value = ZSTD_WINDOWLOG_LIMIT_DEFAULT; - CHECK_DBOUNDS(ZSTD_d_windowLogMax, value); - dctx->maxWindowSize = ((size_t)1) << value; - return 0; - case ZSTD_d_format: - CHECK_DBOUNDS(ZSTD_d_format, value); - dctx->format = (ZSTD_format_e)value; - return 0; - case ZSTD_d_stableOutBuffer: - CHECK_DBOUNDS(ZSTD_d_stableOutBuffer, value); - dctx->outBufferMode = (ZSTD_bufferMode_e)value; - return 0; - case ZSTD_d_forceIgnoreChecksum: - CHECK_DBOUNDS(ZSTD_d_forceIgnoreChecksum, value); - dctx->forceIgnoreChecksum = (ZSTD_forceIgnoreChecksum_e)value; - return 0; - case ZSTD_d_refMultipleDDicts: - CHECK_DBOUNDS(ZSTD_d_refMultipleDDicts, value); - if (dctx->staticSize != 0) { - RETURN_ERROR(parameter_unsupported, "Static dctx does not support multiple DDicts!"); - } - dctx->refMultipleDDicts = (ZSTD_refMultipleDDicts_e)value; - return 0; - default:; - } - RETURN_ERROR(parameter_unsupported, ""); -} - -size_t ZSTD_DCtx_reset(ZSTD_DCtx* dctx, ZSTD_ResetDirective reset) -{ - if ( (reset == ZSTD_reset_session_only) - || (reset == ZSTD_reset_session_and_parameters) ) { - dctx->streamStage = zdss_init; - dctx->noForwardProgress = 0; - } - if ( (reset == ZSTD_reset_parameters) - || (reset == ZSTD_reset_session_and_parameters) ) { - RETURN_ERROR_IF(dctx->streamStage != zdss_init, stage_wrong, ""); - ZSTD_clearDict(dctx); - ZSTD_DCtx_resetParameters(dctx); - } - return 0; -} - - -size_t ZSTD_sizeof_DStream(const ZSTD_DStream* dctx) -{ - return ZSTD_sizeof_DCtx(dctx); -} - -size_t ZSTD_decodingBufferSize_min(unsigned long long windowSize, unsigned long long frameContentSize) -{ - size_t const blockSize = (size_t) MIN(windowSize, ZSTD_BLOCKSIZE_MAX); - unsigned long long const neededRBSize = windowSize + blockSize + (WILDCOPY_OVERLENGTH * 2); - unsigned long long const neededSize = MIN(frameContentSize, neededRBSize); - size_t const minRBSize = (size_t) neededSize; - RETURN_ERROR_IF((unsigned long long)minRBSize != neededSize, - frameParameter_windowTooLarge, ""); - return minRBSize; -} - -size_t ZSTD_estimateDStreamSize(size_t windowSize) -{ - size_t const blockSize = MIN(windowSize, ZSTD_BLOCKSIZE_MAX); - size_t const inBuffSize = blockSize; /* no block can be larger */ - size_t const outBuffSize = ZSTD_decodingBufferSize_min(windowSize, ZSTD_CONTENTSIZE_UNKNOWN); - return ZSTD_estimateDCtxSize() + inBuffSize + outBuffSize; -} - -size_t ZSTD_estimateDStreamSize_fromFrame(const void* src, size_t srcSize) -{ - U32 const windowSizeMax = 1U << ZSTD_WINDOWLOG_MAX; /* note : should be user-selectable, but requires an additional parameter (or a dctx) */ - ZSTD_frameHeader zfh; - size_t const err = ZSTD_getFrameHeader(&zfh, src, srcSize); - if (ZSTD_isError(err)) return err; - RETURN_ERROR_IF(err>0, srcSize_wrong, ""); - RETURN_ERROR_IF(zfh.windowSize > windowSizeMax, - frameParameter_windowTooLarge, ""); - return ZSTD_estimateDStreamSize((size_t)zfh.windowSize); -} - - -/* ***** Decompression ***** */ - -static int ZSTD_DCtx_isOverflow(ZSTD_DStream* zds, size_t const neededInBuffSize, size_t const neededOutBuffSize) -{ - return (zds->inBuffSize + zds->outBuffSize) >= (neededInBuffSize + neededOutBuffSize) * ZSTD_WORKSPACETOOLARGE_FACTOR; -} - -static void ZSTD_DCtx_updateOversizedDuration(ZSTD_DStream* zds, size_t const neededInBuffSize, size_t const neededOutBuffSize) -{ - if (ZSTD_DCtx_isOverflow(zds, neededInBuffSize, neededOutBuffSize)) - zds->oversizedDuration++; - else - zds->oversizedDuration = 0; -} - -static int ZSTD_DCtx_isOversizedTooLong(ZSTD_DStream* zds) -{ - return zds->oversizedDuration >= ZSTD_WORKSPACETOOLARGE_MAXDURATION; -} - -/* Checks that the output buffer hasn't changed if ZSTD_obm_stable is used. */ -static size_t ZSTD_checkOutBuffer(ZSTD_DStream const* zds, ZSTD_outBuffer const* output) -{ - ZSTD_outBuffer const expect = zds->expectedOutBuffer; - /* No requirement when ZSTD_obm_stable is not enabled. */ - if (zds->outBufferMode != ZSTD_bm_stable) - return 0; - /* Any buffer is allowed in zdss_init, this must be the same for every other call until - * the context is reset. - */ - if (zds->streamStage == zdss_init) - return 0; - /* The buffer must match our expectation exactly. */ - if (expect.dst == output->dst && expect.pos == output->pos && expect.size == output->size) - return 0; - RETURN_ERROR(dstBuffer_wrong, "ZSTD_d_stableOutBuffer enabled but output differs!"); -} - -/* Calls ZSTD_decompressContinue() with the right parameters for ZSTD_decompressStream() - * and updates the stage and the output buffer state. This call is extracted so it can be - * used both when reading directly from the ZSTD_inBuffer, and in buffered input mode. - * NOTE: You must break after calling this function since the streamStage is modified. - */ -static size_t ZSTD_decompressContinueStream( - ZSTD_DStream* zds, char** op, char* oend, - void const* src, size_t srcSize) { - int const isSkipFrame = ZSTD_isSkipFrame(zds); - if (zds->outBufferMode == ZSTD_bm_buffered) { - size_t const dstSize = isSkipFrame ? 0 : zds->outBuffSize - zds->outStart; - size_t const decodedSize = ZSTD_decompressContinue(zds, - zds->outBuff + zds->outStart, dstSize, src, srcSize); - FORWARD_IF_ERROR(decodedSize, ""); - if (!decodedSize && !isSkipFrame) { - zds->streamStage = zdss_read; - } else { - zds->outEnd = zds->outStart + decodedSize; - zds->streamStage = zdss_flush; - } - } else { - /* Write directly into the output buffer */ - size_t const dstSize = isSkipFrame ? 0 : (size_t)(oend - *op); - size_t const decodedSize = ZSTD_decompressContinue(zds, *op, dstSize, src, srcSize); - FORWARD_IF_ERROR(decodedSize, ""); - *op += decodedSize; - /* Flushing is not needed. */ - zds->streamStage = zdss_read; - assert(*op <= oend); - assert(zds->outBufferMode == ZSTD_bm_stable); - } - return 0; -} - -size_t ZSTD_decompressStream(ZSTD_DStream* zds, ZSTD_outBuffer* output, ZSTD_inBuffer* input) -{ - const char* const src = (const char*)input->src; - const char* const istart = input->pos != 0 ? src + input->pos : src; - const char* const iend = input->size != 0 ? src + input->size : src; - const char* ip = istart; - char* const dst = (char*)output->dst; - char* const ostart = output->pos != 0 ? dst + output->pos : dst; - char* const oend = output->size != 0 ? dst + output->size : dst; - char* op = ostart; - U32 someMoreWork = 1; - - DEBUGLOG(5, "ZSTD_decompressStream"); - RETURN_ERROR_IF( - input->pos > input->size, - srcSize_wrong, - "forbidden. in: pos: %u vs size: %u", - (U32)input->pos, (U32)input->size); - RETURN_ERROR_IF( - output->pos > output->size, - dstSize_tooSmall, - "forbidden. out: pos: %u vs size: %u", - (U32)output->pos, (U32)output->size); - DEBUGLOG(5, "input size : %u", (U32)(input->size - input->pos)); - FORWARD_IF_ERROR(ZSTD_checkOutBuffer(zds, output), ""); - - while (someMoreWork) { - switch(zds->streamStage) - { - case zdss_init : - DEBUGLOG(5, "stage zdss_init => transparent reset "); - zds->streamStage = zdss_loadHeader; - zds->lhSize = zds->inPos = zds->outStart = zds->outEnd = 0; - zds->legacyVersion = 0; - zds->hostageByte = 0; - zds->expectedOutBuffer = *output; - /* fall-through */ - - case zdss_loadHeader : - DEBUGLOG(5, "stage zdss_loadHeader (srcSize : %u)", (U32)(iend - ip)); -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1) - if (zds->legacyVersion) { - RETURN_ERROR_IF(zds->staticSize, memory_allocation, - "legacy support is incompatible with static dctx"); - { size_t const hint = ZSTD_decompressLegacyStream(zds->legacyContext, zds->legacyVersion, output, input); - if (hint==0) zds->streamStage = zdss_init; - return hint; - } } -#endif - { size_t const hSize = ZSTD_getFrameHeader_advanced(&zds->fParams, zds->headerBuffer, zds->lhSize, zds->format); - if (zds->refMultipleDDicts && zds->ddictSet) { - ZSTD_DCtx_selectFrameDDict(zds); - } - DEBUGLOG(5, "header size : %u", (U32)hSize); - if (ZSTD_isError(hSize)) { -#if defined(ZSTD_LEGACY_SUPPORT) && (ZSTD_LEGACY_SUPPORT>=1) - U32 const legacyVersion = ZSTD_isLegacy(istart, iend-istart); - if (legacyVersion) { - ZSTD_DDict const* const ddict = ZSTD_getDDict(zds); - const void* const dict = ddict ? ZSTD_DDict_dictContent(ddict) : NULL; - size_t const dictSize = ddict ? ZSTD_DDict_dictSize(ddict) : 0; - DEBUGLOG(5, "ZSTD_decompressStream: detected legacy version v0.%u", legacyVersion); - RETURN_ERROR_IF(zds->staticSize, memory_allocation, - "legacy support is incompatible with static dctx"); - FORWARD_IF_ERROR(ZSTD_initLegacyStream(&zds->legacyContext, - zds->previousLegacyVersion, legacyVersion, - dict, dictSize), ""); - zds->legacyVersion = zds->previousLegacyVersion = legacyVersion; - { size_t const hint = ZSTD_decompressLegacyStream(zds->legacyContext, legacyVersion, output, input); - if (hint==0) zds->streamStage = zdss_init; /* or stay in stage zdss_loadHeader */ - return hint; - } } -#endif - return hSize; /* error */ - } - if (hSize != 0) { /* need more input */ - size_t const toLoad = hSize - zds->lhSize; /* if hSize!=0, hSize > zds->lhSize */ - size_t const remainingInput = (size_t)(iend-ip); - assert(iend >= ip); - if (toLoad > remainingInput) { /* not enough input to load full header */ - if (remainingInput > 0) { - ZSTD_memcpy(zds->headerBuffer + zds->lhSize, ip, remainingInput); - zds->lhSize += remainingInput; - } - input->pos = input->size; - return (MAX((size_t)ZSTD_FRAMEHEADERSIZE_MIN(zds->format), hSize) - zds->lhSize) + ZSTD_blockHeaderSize; /* remaining header bytes + next block header */ - } - assert(ip != NULL); - ZSTD_memcpy(zds->headerBuffer + zds->lhSize, ip, toLoad); zds->lhSize = hSize; ip += toLoad; - break; - } } - - /* check for single-pass mode opportunity */ - if (zds->fParams.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN - && zds->fParams.frameType != ZSTD_skippableFrame - && (U64)(size_t)(oend-op) >= zds->fParams.frameContentSize) { - size_t const cSize = ZSTD_findFrameCompressedSize(istart, (size_t)(iend-istart)); - if (cSize <= (size_t)(iend-istart)) { - /* shortcut : using single-pass mode */ - size_t const decompressedSize = ZSTD_decompress_usingDDict(zds, op, (size_t)(oend-op), istart, cSize, ZSTD_getDDict(zds)); - if (ZSTD_isError(decompressedSize)) return decompressedSize; - DEBUGLOG(4, "shortcut to single-pass ZSTD_decompress_usingDDict()") - ip = istart + cSize; - op += decompressedSize; - zds->expected = 0; - zds->streamStage = zdss_init; - someMoreWork = 0; - break; - } } - - /* Check output buffer is large enough for ZSTD_odm_stable. */ - if (zds->outBufferMode == ZSTD_bm_stable - && zds->fParams.frameType != ZSTD_skippableFrame - && zds->fParams.frameContentSize != ZSTD_CONTENTSIZE_UNKNOWN - && (U64)(size_t)(oend-op) < zds->fParams.frameContentSize) { - RETURN_ERROR(dstSize_tooSmall, "ZSTD_obm_stable passed but ZSTD_outBuffer is too small"); - } - - /* Consume header (see ZSTDds_decodeFrameHeader) */ - DEBUGLOG(4, "Consume header"); - FORWARD_IF_ERROR(ZSTD_decompressBegin_usingDDict(zds, ZSTD_getDDict(zds)), ""); - - if ((MEM_readLE32(zds->headerBuffer) & ZSTD_MAGIC_SKIPPABLE_MASK) == ZSTD_MAGIC_SKIPPABLE_START) { /* skippable frame */ - zds->expected = MEM_readLE32(zds->headerBuffer + ZSTD_FRAMEIDSIZE); - zds->stage = ZSTDds_skipFrame; - } else { - FORWARD_IF_ERROR(ZSTD_decodeFrameHeader(zds, zds->headerBuffer, zds->lhSize), ""); - zds->expected = ZSTD_blockHeaderSize; - zds->stage = ZSTDds_decodeBlockHeader; - } - - /* control buffer memory usage */ - DEBUGLOG(4, "Control max memory usage (%u KB <= max %u KB)", - (U32)(zds->fParams.windowSize >>10), - (U32)(zds->maxWindowSize >> 10) ); - zds->fParams.windowSize = MAX(zds->fParams.windowSize, 1U << ZSTD_WINDOWLOG_ABSOLUTEMIN); - RETURN_ERROR_IF(zds->fParams.windowSize > zds->maxWindowSize, - frameParameter_windowTooLarge, ""); - - /* Adapt buffer sizes to frame header instructions */ - { size_t const neededInBuffSize = MAX(zds->fParams.blockSizeMax, 4 /* frame checksum */); - size_t const neededOutBuffSize = zds->outBufferMode == ZSTD_bm_buffered - ? ZSTD_decodingBufferSize_min(zds->fParams.windowSize, zds->fParams.frameContentSize) - : 0; - - ZSTD_DCtx_updateOversizedDuration(zds, neededInBuffSize, neededOutBuffSize); - - { int const tooSmall = (zds->inBuffSize < neededInBuffSize) || (zds->outBuffSize < neededOutBuffSize); - int const tooLarge = ZSTD_DCtx_isOversizedTooLong(zds); - - if (tooSmall || tooLarge) { - size_t const bufferSize = neededInBuffSize + neededOutBuffSize; - DEBUGLOG(4, "inBuff : from %u to %u", - (U32)zds->inBuffSize, (U32)neededInBuffSize); - DEBUGLOG(4, "outBuff : from %u to %u", - (U32)zds->outBuffSize, (U32)neededOutBuffSize); - if (zds->staticSize) { /* static DCtx */ - DEBUGLOG(4, "staticSize : %u", (U32)zds->staticSize); - assert(zds->staticSize >= sizeof(ZSTD_DCtx)); /* controlled at init */ - RETURN_ERROR_IF( - bufferSize > zds->staticSize - sizeof(ZSTD_DCtx), - memory_allocation, ""); - } else { - ZSTD_customFree(zds->inBuff, zds->customMem); - zds->inBuffSize = 0; - zds->outBuffSize = 0; - zds->inBuff = (char*)ZSTD_customMalloc(bufferSize, zds->customMem); - RETURN_ERROR_IF(zds->inBuff == NULL, memory_allocation, ""); - } - zds->inBuffSize = neededInBuffSize; - zds->outBuff = zds->inBuff + zds->inBuffSize; - zds->outBuffSize = neededOutBuffSize; - } } } - zds->streamStage = zdss_read; - /* fall-through */ - - case zdss_read: - DEBUGLOG(5, "stage zdss_read"); - { size_t const neededInSize = ZSTD_nextSrcSizeToDecompressWithInputSize(zds, (size_t)(iend - ip)); - DEBUGLOG(5, "neededInSize = %u", (U32)neededInSize); - if (neededInSize==0) { /* end of frame */ - zds->streamStage = zdss_init; - someMoreWork = 0; - break; - } - if ((size_t)(iend-ip) >= neededInSize) { /* decode directly from src */ - FORWARD_IF_ERROR(ZSTD_decompressContinueStream(zds, &op, oend, ip, neededInSize), ""); - ip += neededInSize; - /* Function modifies the stage so we must break */ - break; - } } - if (ip==iend) { someMoreWork = 0; break; } /* no more input */ - zds->streamStage = zdss_load; - /* fall-through */ - - case zdss_load: - { size_t const neededInSize = ZSTD_nextSrcSizeToDecompress(zds); - size_t const toLoad = neededInSize - zds->inPos; - int const isSkipFrame = ZSTD_isSkipFrame(zds); - size_t loadedSize; - /* At this point we shouldn't be decompressing a block that we can stream. */ - assert(neededInSize == ZSTD_nextSrcSizeToDecompressWithInputSize(zds, iend - ip)); - if (isSkipFrame) { - loadedSize = MIN(toLoad, (size_t)(iend-ip)); - } else { - RETURN_ERROR_IF(toLoad > zds->inBuffSize - zds->inPos, - corruption_detected, - "should never happen"); - loadedSize = ZSTD_limitCopy(zds->inBuff + zds->inPos, toLoad, ip, (size_t)(iend-ip)); - } - ip += loadedSize; - zds->inPos += loadedSize; - if (loadedSize < toLoad) { someMoreWork = 0; break; } /* not enough input, wait for more */ - - /* decode loaded input */ - zds->inPos = 0; /* input is consumed */ - FORWARD_IF_ERROR(ZSTD_decompressContinueStream(zds, &op, oend, zds->inBuff, neededInSize), ""); - /* Function modifies the stage so we must break */ - break; - } - case zdss_flush: - { size_t const toFlushSize = zds->outEnd - zds->outStart; - size_t const flushedSize = ZSTD_limitCopy(op, (size_t)(oend-op), zds->outBuff + zds->outStart, toFlushSize); - op += flushedSize; - zds->outStart += flushedSize; - if (flushedSize == toFlushSize) { /* flush completed */ - zds->streamStage = zdss_read; - if ( (zds->outBuffSize < zds->fParams.frameContentSize) - && (zds->outStart + zds->fParams.blockSizeMax > zds->outBuffSize) ) { - DEBUGLOG(5, "restart filling outBuff from beginning (left:%i, needed:%u)", - (int)(zds->outBuffSize - zds->outStart), - (U32)zds->fParams.blockSizeMax); - zds->outStart = zds->outEnd = 0; - } - break; - } } - /* cannot complete flush */ - someMoreWork = 0; - break; - - default: - assert(0); /* impossible */ - RETURN_ERROR(GENERIC, "impossible to reach"); /* some compiler require default to do something */ - } } - - /* result */ - input->pos = (size_t)(ip - (const char*)(input->src)); - output->pos = (size_t)(op - (char*)(output->dst)); - - /* Update the expected output buffer for ZSTD_obm_stable. */ - zds->expectedOutBuffer = *output; - - if ((ip==istart) && (op==ostart)) { /* no forward progress */ - zds->noForwardProgress ++; - if (zds->noForwardProgress >= ZSTD_NO_FORWARD_PROGRESS_MAX) { - RETURN_ERROR_IF(op==oend, dstSize_tooSmall, ""); - RETURN_ERROR_IF(ip==iend, srcSize_wrong, ""); - assert(0); - } - } else { - zds->noForwardProgress = 0; - } - { size_t nextSrcSizeHint = ZSTD_nextSrcSizeToDecompress(zds); - if (!nextSrcSizeHint) { /* frame fully decoded */ - if (zds->outEnd == zds->outStart) { /* output fully flushed */ - if (zds->hostageByte) { - if (input->pos >= input->size) { - /* can't release hostage (not present) */ - zds->streamStage = zdss_read; - return 1; - } - input->pos++; /* release hostage */ - } /* zds->hostageByte */ - return 0; - } /* zds->outEnd == zds->outStart */ - if (!zds->hostageByte) { /* output not fully flushed; keep last byte as hostage; will be released when all output is flushed */ - input->pos--; /* note : pos > 0, otherwise, impossible to finish reading last block */ - zds->hostageByte=1; - } - return 1; - } /* nextSrcSizeHint==0 */ - nextSrcSizeHint += ZSTD_blockHeaderSize * (ZSTD_nextInputType(zds) == ZSTDnit_block); /* preload header of next block */ - assert(zds->inPos <= nextSrcSizeHint); - nextSrcSizeHint -= zds->inPos; /* part already loaded*/ - return nextSrcSizeHint; - } -} - -size_t ZSTD_decompressStream_simpleArgs ( - ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, size_t* dstPos, - const void* src, size_t srcSize, size_t* srcPos) -{ - ZSTD_outBuffer output = { dst, dstCapacity, *dstPos }; - ZSTD_inBuffer input = { src, srcSize, *srcPos }; - /* ZSTD_compress_generic() will check validity of dstPos and srcPos */ - size_t const cErr = ZSTD_decompressStream(dctx, &output, &input); - *dstPos = output.pos; - *srcPos = input.pos; - return cErr; -} -/**** ended inlining decompress/zstd_decompress.c ****/ -/**** start inlining decompress/zstd_decompress_block.c ****/ -/* - * Copyright (c) 2016-2021, Yann Collet, Facebook, Inc. - * All rights reserved. - * - * This source code is licensed under both the BSD-style license (found in the - * LICENSE file in the root directory of this source tree) and the GPLv2 (found - * in the COPYING file in the root directory of this source tree). - * You may select, at your option, one of the above-listed licenses. - */ - -/* zstd_decompress_block : - * this module takes care of decompressing _compressed_ block */ - -/*-******************************************************* -* Dependencies -*********************************************************/ -/**** skipping file: ../common/zstd_deps.h ****/ -/**** skipping file: ../common/compiler.h ****/ -/**** skipping file: ../common/cpu.h ****/ -/**** skipping file: ../common/mem.h ****/ -#define FSE_STATIC_LINKING_ONLY -/**** skipping file: ../common/fse.h ****/ -#define HUF_STATIC_LINKING_ONLY -/**** skipping file: ../common/huf.h ****/ -/**** skipping file: ../common/zstd_internal.h ****/ -/**** skipping file: zstd_decompress_internal.h ****/ -/**** skipping file: zstd_ddict.h ****/ -/**** skipping file: zstd_decompress_block.h ****/ - -/*_******************************************************* -* Macros -**********************************************************/ - -/* These two optional macros force the use one way or another of the two - * ZSTD_decompressSequences implementations. You can't force in both directions - * at the same time. - */ -#if defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT) && \ - defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG) -#error "Cannot force the use of the short and the long ZSTD_decompressSequences variants!" -#endif - - -/*_******************************************************* -* Memory operations -**********************************************************/ -static void ZSTD_copy4(void* dst, const void* src) { ZSTD_memcpy(dst, src, 4); } - - -/*-************************************************************* - * Block decoding - ***************************************************************/ - -/*! ZSTD_getcBlockSize() : - * Provides the size of compressed block from block header `src` */ -size_t ZSTD_getcBlockSize(const void* src, size_t srcSize, - blockProperties_t* bpPtr) -{ - RETURN_ERROR_IF(srcSize < ZSTD_blockHeaderSize, srcSize_wrong, ""); - - { U32 const cBlockHeader = MEM_readLE24(src); - U32 const cSize = cBlockHeader >> 3; - bpPtr->lastBlock = cBlockHeader & 1; - bpPtr->blockType = (blockType_e)((cBlockHeader >> 1) & 3); - bpPtr->origSize = cSize; /* only useful for RLE */ - if (bpPtr->blockType == bt_rle) return 1; - RETURN_ERROR_IF(bpPtr->blockType == bt_reserved, corruption_detected, ""); - return cSize; - } -} - - -/* Hidden declaration for fullbench */ -size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx, - const void* src, size_t srcSize); -/*! ZSTD_decodeLiteralsBlock() : - * @return : nb of bytes read from src (< srcSize ) - * note : symbol not declared but exposed for fullbench */ -size_t ZSTD_decodeLiteralsBlock(ZSTD_DCtx* dctx, - const void* src, size_t srcSize) /* note : srcSize < BLOCKSIZE */ -{ - DEBUGLOG(5, "ZSTD_decodeLiteralsBlock"); - RETURN_ERROR_IF(srcSize < MIN_CBLOCK_SIZE, corruption_detected, ""); - - { const BYTE* const istart = (const BYTE*) src; - symbolEncodingType_e const litEncType = (symbolEncodingType_e)(istart[0] & 3); - - switch(litEncType) - { - case set_repeat: - DEBUGLOG(5, "set_repeat flag : re-using stats from previous compressed literals block"); - RETURN_ERROR_IF(dctx->litEntropy==0, dictionary_corrupted, ""); - /* fall-through */ - - case set_compressed: - RETURN_ERROR_IF(srcSize < 5, corruption_detected, "srcSize >= MIN_CBLOCK_SIZE == 3; here we need up to 5 for case 3"); - { size_t lhSize, litSize, litCSize; - U32 singleStream=0; - U32 const lhlCode = (istart[0] >> 2) & 3; - U32 const lhc = MEM_readLE32(istart); - size_t hufSuccess; - switch(lhlCode) - { - case 0: case 1: default: /* note : default is impossible, since lhlCode into [0..3] */ - /* 2 - 2 - 10 - 10 */ - singleStream = !lhlCode; - lhSize = 3; - litSize = (lhc >> 4) & 0x3FF; - litCSize = (lhc >> 14) & 0x3FF; - break; - case 2: - /* 2 - 2 - 14 - 14 */ - lhSize = 4; - litSize = (lhc >> 4) & 0x3FFF; - litCSize = lhc >> 18; - break; - case 3: - /* 2 - 2 - 18 - 18 */ - lhSize = 5; - litSize = (lhc >> 4) & 0x3FFFF; - litCSize = (lhc >> 22) + ((size_t)istart[4] << 10); - break; - } - RETURN_ERROR_IF(litSize > ZSTD_BLOCKSIZE_MAX, corruption_detected, ""); - RETURN_ERROR_IF(litCSize + lhSize > srcSize, corruption_detected, ""); - - /* prefetch huffman table if cold */ - if (dctx->ddictIsCold && (litSize > 768 /* heuristic */)) { - PREFETCH_AREA(dctx->HUFptr, sizeof(dctx->entropy.hufTable)); - } - - if (litEncType==set_repeat) { - if (singleStream) { - hufSuccess = HUF_decompress1X_usingDTable_bmi2( - dctx->litBuffer, litSize, istart+lhSize, litCSize, - dctx->HUFptr, dctx->bmi2); - } else { - hufSuccess = HUF_decompress4X_usingDTable_bmi2( - dctx->litBuffer, litSize, istart+lhSize, litCSize, - dctx->HUFptr, dctx->bmi2); - } - } else { - if (singleStream) { -#if defined(HUF_FORCE_DECOMPRESS_X2) - hufSuccess = HUF_decompress1X_DCtx_wksp( - dctx->entropy.hufTable, dctx->litBuffer, litSize, - istart+lhSize, litCSize, dctx->workspace, - sizeof(dctx->workspace)); -#else - hufSuccess = HUF_decompress1X1_DCtx_wksp_bmi2( - dctx->entropy.hufTable, dctx->litBuffer, litSize, - istart+lhSize, litCSize, dctx->workspace, - sizeof(dctx->workspace), dctx->bmi2); -#endif - } else { - hufSuccess = HUF_decompress4X_hufOnly_wksp_bmi2( - dctx->entropy.hufTable, dctx->litBuffer, litSize, - istart+lhSize, litCSize, dctx->workspace, - sizeof(dctx->workspace), dctx->bmi2); - } - } - - RETURN_ERROR_IF(HUF_isError(hufSuccess), corruption_detected, ""); - - dctx->litPtr = dctx->litBuffer; - dctx->litSize = litSize; - dctx->litEntropy = 1; - if (litEncType==set_compressed) dctx->HUFptr = dctx->entropy.hufTable; - ZSTD_memset(dctx->litBuffer + dctx->litSize, 0, WILDCOPY_OVERLENGTH); - return litCSize + lhSize; - } - - case set_basic: - { size_t litSize, lhSize; - U32 const lhlCode = ((istart[0]) >> 2) & 3; - switch(lhlCode) - { - case 0: case 2: default: /* note : default is impossible, since lhlCode into [0..3] */ - lhSize = 1; - litSize = istart[0] >> 3; - break; - case 1: - lhSize = 2; - litSize = MEM_readLE16(istart) >> 4; - break; - case 3: - lhSize = 3; - litSize = MEM_readLE24(istart) >> 4; - break; - } - - if (lhSize+litSize+WILDCOPY_OVERLENGTH > srcSize) { /* risk reading beyond src buffer with wildcopy */ - RETURN_ERROR_IF(litSize+lhSize > srcSize, corruption_detected, ""); - ZSTD_memcpy(dctx->litBuffer, istart+lhSize, litSize); - dctx->litPtr = dctx->litBuffer; - dctx->litSize = litSize; - ZSTD_memset(dctx->litBuffer + dctx->litSize, 0, WILDCOPY_OVERLENGTH); - return lhSize+litSize; - } - /* direct reference into compressed stream */ - dctx->litPtr = istart+lhSize; - dctx->litSize = litSize; - return lhSize+litSize; - } - - case set_rle: - { U32 const lhlCode = ((istart[0]) >> 2) & 3; - size_t litSize, lhSize; - switch(lhlCode) - { - case 0: case 2: default: /* note : default is impossible, since lhlCode into [0..3] */ - lhSize = 1; - litSize = istart[0] >> 3; - break; - case 1: - lhSize = 2; - litSize = MEM_readLE16(istart) >> 4; - break; - case 3: - lhSize = 3; - litSize = MEM_readLE24(istart) >> 4; - RETURN_ERROR_IF(srcSize<4, corruption_detected, "srcSize >= MIN_CBLOCK_SIZE == 3; here we need lhSize+1 = 4"); - break; - } - RETURN_ERROR_IF(litSize > ZSTD_BLOCKSIZE_MAX, corruption_detected, ""); - ZSTD_memset(dctx->litBuffer, istart[lhSize], litSize + WILDCOPY_OVERLENGTH); - dctx->litPtr = dctx->litBuffer; - dctx->litSize = litSize; - return lhSize+1; - } - default: - RETURN_ERROR(corruption_detected, "impossible"); - } - } -} - -/* Default FSE distribution tables. - * These are pre-calculated FSE decoding tables using default distributions as defined in specification : - * https://github.com/facebook/zstd/blob/release/doc/zstd_compression_format.md#default-distributions - * They were generated programmatically with following method : - * - start from default distributions, present in /lib/common/zstd_internal.h - * - generate tables normally, using ZSTD_buildFSETable() - * - printout the content of tables - * - pretify output, report below, test with fuzzer to ensure it's correct */ - -/* Default FSE distribution table for Literal Lengths */ -static const ZSTD_seqSymbol LL_defaultDTable[(1<tableLog = 0; - DTableH->fastMode = 0; - - cell->nbBits = 0; - cell->nextState = 0; - assert(nbAddBits < 255); - cell->nbAdditionalBits = (BYTE)nbAddBits; - cell->baseValue = baseValue; -} - - -/* ZSTD_buildFSETable() : - * generate FSE decoding table for one symbol (ll, ml or off) - * cannot fail if input is valid => - * all inputs are presumed validated at this stage */ -FORCE_INLINE_TEMPLATE -void ZSTD_buildFSETable_body(ZSTD_seqSymbol* dt, - const short* normalizedCounter, unsigned maxSymbolValue, - const U32* baseValue, const U32* nbAdditionalBits, - unsigned tableLog, void* wksp, size_t wkspSize) -{ - ZSTD_seqSymbol* const tableDecode = dt+1; - U32 const maxSV1 = maxSymbolValue + 1; - U32 const tableSize = 1 << tableLog; - - U16* symbolNext = (U16*)wksp; - BYTE* spread = (BYTE*)(symbolNext + MaxSeq + 1); - U32 highThreshold = tableSize - 1; - - - /* Sanity Checks */ - assert(maxSymbolValue <= MaxSeq); - assert(tableLog <= MaxFSELog); - assert(wkspSize >= ZSTD_BUILD_FSE_TABLE_WKSP_SIZE); - (void)wkspSize; - /* Init, lay down lowprob symbols */ - { ZSTD_seqSymbol_header DTableH; - DTableH.tableLog = tableLog; - DTableH.fastMode = 1; - { S16 const largeLimit= (S16)(1 << (tableLog-1)); - U32 s; - for (s=0; s= largeLimit) DTableH.fastMode=0; - assert(normalizedCounter[s]>=0); - symbolNext[s] = (U16)normalizedCounter[s]; - } } } - ZSTD_memcpy(dt, &DTableH, sizeof(DTableH)); - } - - /* Spread symbols */ - assert(tableSize <= 512); - /* Specialized symbol spreading for the case when there are - * no low probability (-1 count) symbols. When compressing - * small blocks we avoid low probability symbols to hit this - * case, since header decoding speed matters more. - */ - if (highThreshold == tableSize - 1) { - size_t const tableMask = tableSize-1; - size_t const step = FSE_TABLESTEP(tableSize); - /* First lay down the symbols in order. - * We use a uint64_t to lay down 8 bytes at a time. This reduces branch - * misses since small blocks generally have small table logs, so nearly - * all symbols have counts <= 8. We ensure we have 8 bytes at the end of - * our buffer to handle the over-write. - */ - { - U64 const add = 0x0101010101010101ull; - size_t pos = 0; - U64 sv = 0; - U32 s; - for (s=0; s highThreshold) position = (position + step) & tableMask; /* lowprob area */ - } } - assert(position == 0); /* position must reach all cells once, otherwise normalizedCounter is incorrect */ - } - - /* Build Decoding table */ - { - U32 u; - for (u=0; u max, corruption_detected, ""); - { U32 const symbol = *(const BYTE*)src; - U32 const baseline = baseValue[symbol]; - U32 const nbBits = nbAdditionalBits[symbol]; - ZSTD_buildSeqTable_rle(DTableSpace, baseline, nbBits); - } - *DTablePtr = DTableSpace; - return 1; - case set_basic : - *DTablePtr = defaultTable; - return 0; - case set_repeat: - RETURN_ERROR_IF(!flagRepeatTable, corruption_detected, ""); - /* prefetch FSE table if used */ - if (ddictIsCold && (nbSeq > 24 /* heuristic */)) { - const void* const pStart = *DTablePtr; - size_t const pSize = sizeof(ZSTD_seqSymbol) * (SEQSYMBOL_TABLE_SIZE(maxLog)); - PREFETCH_AREA(pStart, pSize); - } - return 0; - case set_compressed : - { unsigned tableLog; - S16 norm[MaxSeq+1]; - size_t const headerSize = FSE_readNCount(norm, &max, &tableLog, src, srcSize); - RETURN_ERROR_IF(FSE_isError(headerSize), corruption_detected, ""); - RETURN_ERROR_IF(tableLog > maxLog, corruption_detected, ""); - ZSTD_buildFSETable(DTableSpace, norm, max, baseValue, nbAdditionalBits, tableLog, wksp, wkspSize, bmi2); - *DTablePtr = DTableSpace; - return headerSize; - } - default : - assert(0); - RETURN_ERROR(GENERIC, "impossible"); - } -} - -size_t ZSTD_decodeSeqHeaders(ZSTD_DCtx* dctx, int* nbSeqPtr, - const void* src, size_t srcSize) -{ - const BYTE* const istart = (const BYTE*)src; - const BYTE* const iend = istart + srcSize; - const BYTE* ip = istart; - int nbSeq; - DEBUGLOG(5, "ZSTD_decodeSeqHeaders"); - - /* check */ - RETURN_ERROR_IF(srcSize < MIN_SEQUENCES_SIZE, srcSize_wrong, ""); - - /* SeqHead */ - nbSeq = *ip++; - if (!nbSeq) { - *nbSeqPtr=0; - RETURN_ERROR_IF(srcSize != 1, srcSize_wrong, ""); - return 1; - } - if (nbSeq > 0x7F) { - if (nbSeq == 0xFF) { - RETURN_ERROR_IF(ip+2 > iend, srcSize_wrong, ""); - nbSeq = MEM_readLE16(ip) + LONGNBSEQ; - ip+=2; - } else { - RETURN_ERROR_IF(ip >= iend, srcSize_wrong, ""); - nbSeq = ((nbSeq-0x80)<<8) + *ip++; - } - } - *nbSeqPtr = nbSeq; - - /* FSE table descriptors */ - RETURN_ERROR_IF(ip+1 > iend, srcSize_wrong, ""); /* minimum possible size: 1 byte for symbol encoding types */ - { symbolEncodingType_e const LLtype = (symbolEncodingType_e)(*ip >> 6); - symbolEncodingType_e const OFtype = (symbolEncodingType_e)((*ip >> 4) & 3); - symbolEncodingType_e const MLtype = (symbolEncodingType_e)((*ip >> 2) & 3); - ip++; - - /* Build DTables */ - { size_t const llhSize = ZSTD_buildSeqTable(dctx->entropy.LLTable, &dctx->LLTptr, - LLtype, MaxLL, LLFSELog, - ip, iend-ip, - LL_base, LL_bits, - LL_defaultDTable, dctx->fseEntropy, - dctx->ddictIsCold, nbSeq, - dctx->workspace, sizeof(dctx->workspace), - dctx->bmi2); - RETURN_ERROR_IF(ZSTD_isError(llhSize), corruption_detected, "ZSTD_buildSeqTable failed"); - ip += llhSize; - } - - { size_t const ofhSize = ZSTD_buildSeqTable(dctx->entropy.OFTable, &dctx->OFTptr, - OFtype, MaxOff, OffFSELog, - ip, iend-ip, - OF_base, OF_bits, - OF_defaultDTable, dctx->fseEntropy, - dctx->ddictIsCold, nbSeq, - dctx->workspace, sizeof(dctx->workspace), - dctx->bmi2); - RETURN_ERROR_IF(ZSTD_isError(ofhSize), corruption_detected, "ZSTD_buildSeqTable failed"); - ip += ofhSize; - } - - { size_t const mlhSize = ZSTD_buildSeqTable(dctx->entropy.MLTable, &dctx->MLTptr, - MLtype, MaxML, MLFSELog, - ip, iend-ip, - ML_base, ML_bits, - ML_defaultDTable, dctx->fseEntropy, - dctx->ddictIsCold, nbSeq, - dctx->workspace, sizeof(dctx->workspace), - dctx->bmi2); - RETURN_ERROR_IF(ZSTD_isError(mlhSize), corruption_detected, "ZSTD_buildSeqTable failed"); - ip += mlhSize; - } - } - - return ip-istart; -} - - -typedef struct { - size_t litLength; - size_t matchLength; - size_t offset; - const BYTE* match; -} seq_t; - -typedef struct { - size_t state; - const ZSTD_seqSymbol* table; -} ZSTD_fseState; - -typedef struct { - BIT_DStream_t DStream; - ZSTD_fseState stateLL; - ZSTD_fseState stateOffb; - ZSTD_fseState stateML; - size_t prevOffset[ZSTD_REP_NUM]; - const BYTE* prefixStart; - const BYTE* dictEnd; - size_t pos; -} seqState_t; - -/*! ZSTD_overlapCopy8() : - * Copies 8 bytes from ip to op and updates op and ip where ip <= op. - * If the offset is < 8 then the offset is spread to at least 8 bytes. - * - * Precondition: *ip <= *op - * Postcondition: *op - *op >= 8 - */ -HINT_INLINE void ZSTD_overlapCopy8(BYTE** op, BYTE const** ip, size_t offset) { - assert(*ip <= *op); - if (offset < 8) { - /* close range match, overlap */ - static const U32 dec32table[] = { 0, 1, 2, 1, 4, 4, 4, 4 }; /* added */ - static const int dec64table[] = { 8, 8, 8, 7, 8, 9,10,11 }; /* subtracted */ - int const sub2 = dec64table[offset]; - (*op)[0] = (*ip)[0]; - (*op)[1] = (*ip)[1]; - (*op)[2] = (*ip)[2]; - (*op)[3] = (*ip)[3]; - *ip += dec32table[offset]; - ZSTD_copy4(*op+4, *ip); - *ip -= sub2; - } else { - ZSTD_copy8(*op, *ip); - } - *ip += 8; - *op += 8; - assert(*op - *ip >= 8); -} - -/*! ZSTD_safecopy() : - * Specialized version of memcpy() that is allowed to READ up to WILDCOPY_OVERLENGTH past the input buffer - * and write up to 16 bytes past oend_w (op >= oend_w is allowed). - * This function is only called in the uncommon case where the sequence is near the end of the block. It - * should be fast for a single long sequence, but can be slow for several short sequences. - * - * @param ovtype controls the overlap detection - * - ZSTD_no_overlap: The source and destination are guaranteed to be at least WILDCOPY_VECLEN bytes apart. - * - ZSTD_overlap_src_before_dst: The src and dst may overlap and may be any distance apart. - * The src buffer must be before the dst buffer. - */ -static void ZSTD_safecopy(BYTE* op, BYTE* const oend_w, BYTE const* ip, ptrdiff_t length, ZSTD_overlap_e ovtype) { - ptrdiff_t const diff = op - ip; - BYTE* const oend = op + length; - - assert((ovtype == ZSTD_no_overlap && (diff <= -8 || diff >= 8 || op >= oend_w)) || - (ovtype == ZSTD_overlap_src_before_dst && diff >= 0)); - - if (length < 8) { - /* Handle short lengths. */ - while (op < oend) *op++ = *ip++; - return; - } - if (ovtype == ZSTD_overlap_src_before_dst) { - /* Copy 8 bytes and ensure the offset >= 8 when there can be overlap. */ - assert(length >= 8); - ZSTD_overlapCopy8(&op, &ip, diff); - assert(op - ip >= 8); - assert(op <= oend); - } - - if (oend <= oend_w) { - /* No risk of overwrite. */ - ZSTD_wildcopy(op, ip, length, ovtype); - return; - } - if (op <= oend_w) { - /* Wildcopy until we get close to the end. */ - assert(oend > oend_w); - ZSTD_wildcopy(op, ip, oend_w - op, ovtype); - ip += oend_w - op; - op = oend_w; - } - /* Handle the leftovers. */ - while (op < oend) *op++ = *ip++; -} - -/* ZSTD_execSequenceEnd(): - * This version handles cases that are near the end of the output buffer. It requires - * more careful checks to make sure there is no overflow. By separating out these hard - * and unlikely cases, we can speed up the common cases. - * - * NOTE: This function needs to be fast for a single long sequence, but doesn't need - * to be optimized for many small sequences, since those fall into ZSTD_execSequence(). - */ -FORCE_NOINLINE -size_t ZSTD_execSequenceEnd(BYTE* op, - BYTE* const oend, seq_t sequence, - const BYTE** litPtr, const BYTE* const litLimit, - const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd) -{ - BYTE* const oLitEnd = op + sequence.litLength; - size_t const sequenceLength = sequence.litLength + sequence.matchLength; - const BYTE* const iLitEnd = *litPtr + sequence.litLength; - const BYTE* match = oLitEnd - sequence.offset; - BYTE* const oend_w = oend - WILDCOPY_OVERLENGTH; - - /* bounds checks : careful of address space overflow in 32-bit mode */ - RETURN_ERROR_IF(sequenceLength > (size_t)(oend - op), dstSize_tooSmall, "last match must fit within dstBuffer"); - RETURN_ERROR_IF(sequence.litLength > (size_t)(litLimit - *litPtr), corruption_detected, "try to read beyond literal buffer"); - assert(op < op + sequenceLength); - assert(oLitEnd < op + sequenceLength); - - /* copy literals */ - ZSTD_safecopy(op, oend_w, *litPtr, sequence.litLength, ZSTD_no_overlap); - op = oLitEnd; - *litPtr = iLitEnd; - - /* copy Match */ - if (sequence.offset > (size_t)(oLitEnd - prefixStart)) { - /* offset beyond prefix */ - RETURN_ERROR_IF(sequence.offset > (size_t)(oLitEnd - virtualStart), corruption_detected, ""); - match = dictEnd - (prefixStart-match); - if (match + sequence.matchLength <= dictEnd) { - ZSTD_memmove(oLitEnd, match, sequence.matchLength); - return sequenceLength; - } - /* span extDict & currentPrefixSegment */ - { size_t const length1 = dictEnd - match; - ZSTD_memmove(oLitEnd, match, length1); - op = oLitEnd + length1; - sequence.matchLength -= length1; - match = prefixStart; - } } - ZSTD_safecopy(op, oend_w, match, sequence.matchLength, ZSTD_overlap_src_before_dst); - return sequenceLength; -} - -HINT_INLINE -size_t ZSTD_execSequence(BYTE* op, - BYTE* const oend, seq_t sequence, - const BYTE** litPtr, const BYTE* const litLimit, - const BYTE* const prefixStart, const BYTE* const virtualStart, const BYTE* const dictEnd) -{ - BYTE* const oLitEnd = op + sequence.litLength; - size_t const sequenceLength = sequence.litLength + sequence.matchLength; - BYTE* const oMatchEnd = op + sequenceLength; /* risk : address space overflow (32-bits) */ - BYTE* const oend_w = oend - WILDCOPY_OVERLENGTH; /* risk : address space underflow on oend=NULL */ - const BYTE* const iLitEnd = *litPtr + sequence.litLength; - const BYTE* match = oLitEnd - sequence.offset; - - assert(op != NULL /* Precondition */); - assert(oend_w < oend /* No underflow */); - /* Handle edge cases in a slow path: - * - Read beyond end of literals - * - Match end is within WILDCOPY_OVERLIMIT of oend - * - 32-bit mode and the match length overflows - */ - if (UNLIKELY( - iLitEnd > litLimit || - oMatchEnd > oend_w || - (MEM_32bits() && (size_t)(oend - op) < sequenceLength + WILDCOPY_OVERLENGTH))) - return ZSTD_execSequenceEnd(op, oend, sequence, litPtr, litLimit, prefixStart, virtualStart, dictEnd); - - /* Assumptions (everything else goes into ZSTD_execSequenceEnd()) */ - assert(op <= oLitEnd /* No overflow */); - assert(oLitEnd < oMatchEnd /* Non-zero match & no overflow */); - assert(oMatchEnd <= oend /* No underflow */); - assert(iLitEnd <= litLimit /* Literal length is in bounds */); - assert(oLitEnd <= oend_w /* Can wildcopy literals */); - assert(oMatchEnd <= oend_w /* Can wildcopy matches */); - - /* Copy Literals: - * Split out litLength <= 16 since it is nearly always true. +1.6% on gcc-9. - * We likely don't need the full 32-byte wildcopy. - */ - assert(WILDCOPY_OVERLENGTH >= 16); - ZSTD_copy16(op, (*litPtr)); - if (UNLIKELY(sequence.litLength > 16)) { - ZSTD_wildcopy(op+16, (*litPtr)+16, sequence.litLength-16, ZSTD_no_overlap); - } - op = oLitEnd; - *litPtr = iLitEnd; /* update for next sequence */ - - /* Copy Match */ - if (sequence.offset > (size_t)(oLitEnd - prefixStart)) { - /* offset beyond prefix -> go into extDict */ - RETURN_ERROR_IF(UNLIKELY(sequence.offset > (size_t)(oLitEnd - virtualStart)), corruption_detected, ""); - match = dictEnd + (match - prefixStart); - if (match + sequence.matchLength <= dictEnd) { - ZSTD_memmove(oLitEnd, match, sequence.matchLength); - return sequenceLength; - } - /* span extDict & currentPrefixSegment */ - { size_t const length1 = dictEnd - match; - ZSTD_memmove(oLitEnd, match, length1); - op = oLitEnd + length1; - sequence.matchLength -= length1; - match = prefixStart; - } } - /* Match within prefix of 1 or more bytes */ - assert(op <= oMatchEnd); - assert(oMatchEnd <= oend_w); - assert(match >= prefixStart); - assert(sequence.matchLength >= 1); - - /* Nearly all offsets are >= WILDCOPY_VECLEN bytes, which means we can use wildcopy - * without overlap checking. - */ - if (LIKELY(sequence.offset >= WILDCOPY_VECLEN)) { - /* We bet on a full wildcopy for matches, since we expect matches to be - * longer than literals (in general). In silesia, ~10% of matches are longer - * than 16 bytes. - */ - ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength, ZSTD_no_overlap); - return sequenceLength; - } - assert(sequence.offset < WILDCOPY_VECLEN); - - /* Copy 8 bytes and spread the offset to be >= 8. */ - ZSTD_overlapCopy8(&op, &match, sequence.offset); - - /* If the match length is > 8 bytes, then continue with the wildcopy. */ - if (sequence.matchLength > 8) { - assert(op < oMatchEnd); - ZSTD_wildcopy(op, match, (ptrdiff_t)sequence.matchLength-8, ZSTD_overlap_src_before_dst); - } - return sequenceLength; -} - -static void -ZSTD_initFseState(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD, const ZSTD_seqSymbol* dt) -{ - const void* ptr = dt; - const ZSTD_seqSymbol_header* const DTableH = (const ZSTD_seqSymbol_header*)ptr; - DStatePtr->state = BIT_readBits(bitD, DTableH->tableLog); - DEBUGLOG(6, "ZSTD_initFseState : val=%u using %u bits", - (U32)DStatePtr->state, DTableH->tableLog); - BIT_reloadDStream(bitD); - DStatePtr->table = dt + 1; -} - -FORCE_INLINE_TEMPLATE void -ZSTD_updateFseState(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD) -{ - ZSTD_seqSymbol const DInfo = DStatePtr->table[DStatePtr->state]; - U32 const nbBits = DInfo.nbBits; - size_t const lowBits = BIT_readBits(bitD, nbBits); - DStatePtr->state = DInfo.nextState + lowBits; -} - -FORCE_INLINE_TEMPLATE void -ZSTD_updateFseStateWithDInfo(ZSTD_fseState* DStatePtr, BIT_DStream_t* bitD, ZSTD_seqSymbol const DInfo) -{ - U32 const nbBits = DInfo.nbBits; - size_t const lowBits = BIT_readBits(bitD, nbBits); - DStatePtr->state = DInfo.nextState + lowBits; -} - -/* We need to add at most (ZSTD_WINDOWLOG_MAX_32 - 1) bits to read the maximum - * offset bits. But we can only read at most (STREAM_ACCUMULATOR_MIN_32 - 1) - * bits before reloading. This value is the maximum number of bytes we read - * after reloading when we are decoding long offsets. - */ -#define LONG_OFFSETS_MAX_EXTRA_BITS_32 \ - (ZSTD_WINDOWLOG_MAX_32 > STREAM_ACCUMULATOR_MIN_32 \ - ? ZSTD_WINDOWLOG_MAX_32 - STREAM_ACCUMULATOR_MIN_32 \ - : 0) - -typedef enum { ZSTD_lo_isRegularOffset, ZSTD_lo_isLongOffset=1 } ZSTD_longOffset_e; -typedef enum { ZSTD_p_noPrefetch=0, ZSTD_p_prefetch=1 } ZSTD_prefetch_e; - -FORCE_INLINE_TEMPLATE seq_t -ZSTD_decodeSequence(seqState_t* seqState, const ZSTD_longOffset_e longOffsets, const ZSTD_prefetch_e prefetch) -{ - seq_t seq; - ZSTD_seqSymbol const llDInfo = seqState->stateLL.table[seqState->stateLL.state]; - ZSTD_seqSymbol const mlDInfo = seqState->stateML.table[seqState->stateML.state]; - ZSTD_seqSymbol const ofDInfo = seqState->stateOffb.table[seqState->stateOffb.state]; - U32 const llBase = llDInfo.baseValue; - U32 const mlBase = mlDInfo.baseValue; - U32 const ofBase = ofDInfo.baseValue; - BYTE const llBits = llDInfo.nbAdditionalBits; - BYTE const mlBits = mlDInfo.nbAdditionalBits; - BYTE const ofBits = ofDInfo.nbAdditionalBits; - BYTE const totalBits = llBits+mlBits+ofBits; - - /* sequence */ - { size_t offset; - if (ofBits > 1) { - ZSTD_STATIC_ASSERT(ZSTD_lo_isLongOffset == 1); - ZSTD_STATIC_ASSERT(LONG_OFFSETS_MAX_EXTRA_BITS_32 == 5); - assert(ofBits <= MaxOff); - if (MEM_32bits() && longOffsets && (ofBits >= STREAM_ACCUMULATOR_MIN_32)) { - U32 const extraBits = ofBits - MIN(ofBits, 32 - seqState->DStream.bitsConsumed); - offset = ofBase + (BIT_readBitsFast(&seqState->DStream, ofBits - extraBits) << extraBits); - BIT_reloadDStream(&seqState->DStream); - if (extraBits) offset += BIT_readBitsFast(&seqState->DStream, extraBits); - assert(extraBits <= LONG_OFFSETS_MAX_EXTRA_BITS_32); /* to avoid another reload */ - } else { - offset = ofBase + BIT_readBitsFast(&seqState->DStream, ofBits/*>0*/); /* <= (ZSTD_WINDOWLOG_MAX-1) bits */ - if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); - } - seqState->prevOffset[2] = seqState->prevOffset[1]; - seqState->prevOffset[1] = seqState->prevOffset[0]; - seqState->prevOffset[0] = offset; - } else { - U32 const ll0 = (llBase == 0); - if (LIKELY((ofBits == 0))) { - if (LIKELY(!ll0)) - offset = seqState->prevOffset[0]; - else { - offset = seqState->prevOffset[1]; - seqState->prevOffset[1] = seqState->prevOffset[0]; - seqState->prevOffset[0] = offset; - } - } else { - offset = ofBase + ll0 + BIT_readBitsFast(&seqState->DStream, 1); - { size_t temp = (offset==3) ? seqState->prevOffset[0] - 1 : seqState->prevOffset[offset]; - temp += !temp; /* 0 is not valid; input is corrupted; force offset to 1 */ - if (offset != 1) seqState->prevOffset[2] = seqState->prevOffset[1]; - seqState->prevOffset[1] = seqState->prevOffset[0]; - seqState->prevOffset[0] = offset = temp; - } } } - seq.offset = offset; - } - - seq.matchLength = mlBase; - if (mlBits > 0) - seq.matchLength += BIT_readBitsFast(&seqState->DStream, mlBits/*>0*/); - - if (MEM_32bits() && (mlBits+llBits >= STREAM_ACCUMULATOR_MIN_32-LONG_OFFSETS_MAX_EXTRA_BITS_32)) - BIT_reloadDStream(&seqState->DStream); - if (MEM_64bits() && UNLIKELY(totalBits >= STREAM_ACCUMULATOR_MIN_64-(LLFSELog+MLFSELog+OffFSELog))) - BIT_reloadDStream(&seqState->DStream); - /* Ensure there are enough bits to read the rest of data in 64-bit mode. */ - ZSTD_STATIC_ASSERT(16+LLFSELog+MLFSELog+OffFSELog < STREAM_ACCUMULATOR_MIN_64); - - seq.litLength = llBase; - if (llBits > 0) - seq.litLength += BIT_readBitsFast(&seqState->DStream, llBits/*>0*/); - - if (MEM_32bits()) - BIT_reloadDStream(&seqState->DStream); - - DEBUGLOG(6, "seq: litL=%u, matchL=%u, offset=%u", - (U32)seq.litLength, (U32)seq.matchLength, (U32)seq.offset); - - if (prefetch == ZSTD_p_prefetch) { - size_t const pos = seqState->pos + seq.litLength; - const BYTE* const matchBase = (seq.offset > pos) ? seqState->dictEnd : seqState->prefixStart; - seq.match = matchBase + pos - seq.offset; /* note : this operation can overflow when seq.offset is really too large, which can only happen when input is corrupted. - * No consequence though : no memory access will occur, offset is only used for prefetching */ - seqState->pos = pos + seq.matchLength; - } - - /* ANS state update - * gcc-9.0.0 does 2.5% worse with ZSTD_updateFseStateWithDInfo(). - * clang-9.2.0 does 7% worse with ZSTD_updateFseState(). - * Naturally it seems like ZSTD_updateFseStateWithDInfo() should be the - * better option, so it is the default for other compilers. But, if you - * measure that it is worse, please put up a pull request. - */ - { -#if defined(__GNUC__) && !defined(__clang__) - const int kUseUpdateFseState = 1; -#else - const int kUseUpdateFseState = 0; -#endif - if (kUseUpdateFseState) { - ZSTD_updateFseState(&seqState->stateLL, &seqState->DStream); /* <= 9 bits */ - ZSTD_updateFseState(&seqState->stateML, &seqState->DStream); /* <= 9 bits */ - if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); /* <= 18 bits */ - ZSTD_updateFseState(&seqState->stateOffb, &seqState->DStream); /* <= 8 bits */ - } else { - ZSTD_updateFseStateWithDInfo(&seqState->stateLL, &seqState->DStream, llDInfo); /* <= 9 bits */ - ZSTD_updateFseStateWithDInfo(&seqState->stateML, &seqState->DStream, mlDInfo); /* <= 9 bits */ - if (MEM_32bits()) BIT_reloadDStream(&seqState->DStream); /* <= 18 bits */ - ZSTD_updateFseStateWithDInfo(&seqState->stateOffb, &seqState->DStream, ofDInfo); /* <= 8 bits */ - } - } - - return seq; -} - -#ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION -MEM_STATIC int ZSTD_dictionaryIsActive(ZSTD_DCtx const* dctx, BYTE const* prefixStart, BYTE const* oLitEnd) -{ - size_t const windowSize = dctx->fParams.windowSize; - /* No dictionary used. */ - if (dctx->dictContentEndForFuzzing == NULL) return 0; - /* Dictionary is our prefix. */ - if (prefixStart == dctx->dictContentBeginForFuzzing) return 1; - /* Dictionary is not our ext-dict. */ - if (dctx->dictEnd != dctx->dictContentEndForFuzzing) return 0; - /* Dictionary is not within our window size. */ - if ((size_t)(oLitEnd - prefixStart) >= windowSize) return 0; - /* Dictionary is active. */ - return 1; -} - -MEM_STATIC void ZSTD_assertValidSequence( - ZSTD_DCtx const* dctx, - BYTE const* op, BYTE const* oend, - seq_t const seq, - BYTE const* prefixStart, BYTE const* virtualStart) -{ -#if DEBUGLEVEL >= 1 - size_t const windowSize = dctx->fParams.windowSize; - size_t const sequenceSize = seq.litLength + seq.matchLength; - BYTE const* const oLitEnd = op + seq.litLength; - DEBUGLOG(6, "Checking sequence: litL=%u matchL=%u offset=%u", - (U32)seq.litLength, (U32)seq.matchLength, (U32)seq.offset); - assert(op <= oend); - assert((size_t)(oend - op) >= sequenceSize); - assert(sequenceSize <= ZSTD_BLOCKSIZE_MAX); - if (ZSTD_dictionaryIsActive(dctx, prefixStart, oLitEnd)) { - size_t const dictSize = (size_t)((char const*)dctx->dictContentEndForFuzzing - (char const*)dctx->dictContentBeginForFuzzing); - /* Offset must be within the dictionary. */ - assert(seq.offset <= (size_t)(oLitEnd - virtualStart)); - assert(seq.offset <= windowSize + dictSize); - } else { - /* Offset must be within our window. */ - assert(seq.offset <= windowSize); - } -#else - (void)dctx, (void)op, (void)oend, (void)seq, (void)prefixStart, (void)virtualStart; -#endif -} -#endif - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG -FORCE_INLINE_TEMPLATE size_t -DONT_VECTORIZE -ZSTD_decompressSequences_body( ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - const BYTE* ip = (const BYTE*)seqStart; - const BYTE* const iend = ip + seqSize; - BYTE* const ostart = (BYTE*)dst; - BYTE* const oend = ostart + maxDstSize; - BYTE* op = ostart; - const BYTE* litPtr = dctx->litPtr; - const BYTE* const litEnd = litPtr + dctx->litSize; - const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart); - const BYTE* const vBase = (const BYTE*) (dctx->virtualStart); - const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd); - DEBUGLOG(5, "ZSTD_decompressSequences_body"); - (void)frame; - - /* Regen sequences */ - if (nbSeq) { - seqState_t seqState; - size_t error = 0; - dctx->fseEntropy = 1; - { U32 i; for (i=0; ientropy.rep[i]; } - RETURN_ERROR_IF( - ERR_isError(BIT_initDStream(&seqState.DStream, ip, iend-ip)), - corruption_detected, ""); - ZSTD_initFseState(&seqState.stateLL, &seqState.DStream, dctx->LLTptr); - ZSTD_initFseState(&seqState.stateOffb, &seqState.DStream, dctx->OFTptr); - ZSTD_initFseState(&seqState.stateML, &seqState.DStream, dctx->MLTptr); - assert(dst != NULL); - - ZSTD_STATIC_ASSERT( - BIT_DStream_unfinished < BIT_DStream_completed && - BIT_DStream_endOfBuffer < BIT_DStream_completed && - BIT_DStream_completed < BIT_DStream_overflow); - -#if defined(__GNUC__) && defined(__x86_64__) - /* Align the decompression loop to 32 + 16 bytes. - * - * zstd compiled with gcc-9 on an Intel i9-9900k shows 10% decompression - * speed swings based on the alignment of the decompression loop. This - * performance swing is caused by parts of the decompression loop falling - * out of the DSB. The entire decompression loop should fit in the DSB, - * when it can't we get much worse performance. You can measure if you've - * hit the good case or the bad case with this perf command for some - * compressed file test.zst: - * - * perf stat -e cycles -e instructions -e idq.all_dsb_cycles_any_uops \ - * -e idq.all_mite_cycles_any_uops -- ./zstd -tq test.zst - * - * If you see most cycles served out of the MITE you've hit the bad case. - * If you see most cycles served out of the DSB you've hit the good case. - * If it is pretty even then you may be in an okay case. - * - * I've been able to reproduce this issue on the following CPUs: - * - Kabylake: Macbook Pro (15-inch, 2019) 2.4 GHz Intel Core i9 - * Use Instruments->Counters to get DSB/MITE cycles. - * I never got performance swings, but I was able to - * go from the good case of mostly DSB to half of the - * cycles served from MITE. - * - Coffeelake: Intel i9-9900k - * - * I haven't been able to reproduce the instability or DSB misses on any - * of the following CPUS: - * - Haswell - * - Broadwell: Intel(R) Xeon(R) CPU E5-2680 v4 @ 2.40GH - * - Skylake - * - * If you are seeing performance stability this script can help test. - * It tests on 4 commits in zstd where I saw performance change. - * - * https://gist.github.com/terrelln/9889fc06a423fd5ca6e99351564473f4 - */ - __asm__(".p2align 5"); - __asm__("nop"); - __asm__(".p2align 4"); -#endif - for ( ; ; ) { - seq_t const sequence = ZSTD_decodeSequence(&seqState, isLongOffset, ZSTD_p_noPrefetch); - size_t const oneSeqSize = ZSTD_execSequence(op, oend, sequence, &litPtr, litEnd, prefixStart, vBase, dictEnd); -#if defined(FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION) && defined(FUZZING_ASSERT_VALID_SEQUENCE) - assert(!ZSTD_isError(oneSeqSize)); - if (frame) ZSTD_assertValidSequence(dctx, op, oend, sequence, prefixStart, vBase); -#endif - DEBUGLOG(6, "regenerated sequence size : %u", (U32)oneSeqSize); - BIT_reloadDStream(&(seqState.DStream)); - op += oneSeqSize; - /* gcc and clang both don't like early returns in this loop. - * Instead break and check for an error at the end of the loop. - */ - if (UNLIKELY(ZSTD_isError(oneSeqSize))) { - error = oneSeqSize; - break; - } - if (UNLIKELY(!--nbSeq)) break; - } - - /* check if reached exact end */ - DEBUGLOG(5, "ZSTD_decompressSequences_body: after decode loop, remaining nbSeq : %i", nbSeq); - if (ZSTD_isError(error)) return error; - RETURN_ERROR_IF(nbSeq, corruption_detected, ""); - RETURN_ERROR_IF(BIT_reloadDStream(&seqState.DStream) < BIT_DStream_completed, corruption_detected, ""); - /* save reps for next block */ - { U32 i; for (i=0; ientropy.rep[i] = (U32)(seqState.prevOffset[i]); } - } - - /* last literal segment */ - { size_t const lastLLSize = litEnd - litPtr; - RETURN_ERROR_IF(lastLLSize > (size_t)(oend-op), dstSize_tooSmall, ""); - if (op != NULL) { - ZSTD_memcpy(op, litPtr, lastLLSize); - op += lastLLSize; - } - } - - return op-ostart; -} - -static size_t -ZSTD_decompressSequences_default(ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - return ZSTD_decompressSequences_body(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); -} -#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG */ - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT -FORCE_INLINE_TEMPLATE size_t -ZSTD_decompressSequencesLong_body( - ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - const BYTE* ip = (const BYTE*)seqStart; - const BYTE* const iend = ip + seqSize; - BYTE* const ostart = (BYTE*)dst; - BYTE* const oend = ostart + maxDstSize; - BYTE* op = ostart; - const BYTE* litPtr = dctx->litPtr; - const BYTE* const litEnd = litPtr + dctx->litSize; - const BYTE* const prefixStart = (const BYTE*) (dctx->prefixStart); - const BYTE* const dictStart = (const BYTE*) (dctx->virtualStart); - const BYTE* const dictEnd = (const BYTE*) (dctx->dictEnd); - (void)frame; - - /* Regen sequences */ - if (nbSeq) { -#define STORED_SEQS 4 -#define STORED_SEQS_MASK (STORED_SEQS-1) -#define ADVANCED_SEQS 4 - seq_t sequences[STORED_SEQS]; - int const seqAdvance = MIN(nbSeq, ADVANCED_SEQS); - seqState_t seqState; - int seqNb; - dctx->fseEntropy = 1; - { int i; for (i=0; ientropy.rep[i]; } - seqState.prefixStart = prefixStart; - seqState.pos = (size_t)(op-prefixStart); - seqState.dictEnd = dictEnd; - assert(dst != NULL); - assert(iend >= ip); - RETURN_ERROR_IF( - ERR_isError(BIT_initDStream(&seqState.DStream, ip, iend-ip)), - corruption_detected, ""); - ZSTD_initFseState(&seqState.stateLL, &seqState.DStream, dctx->LLTptr); - ZSTD_initFseState(&seqState.stateOffb, &seqState.DStream, dctx->OFTptr); - ZSTD_initFseState(&seqState.stateML, &seqState.DStream, dctx->MLTptr); - - /* prepare in advance */ - for (seqNb=0; (BIT_reloadDStream(&seqState.DStream) <= BIT_DStream_completed) && (seqNbentropy.rep[i] = (U32)(seqState.prevOffset[i]); } - } - - /* last literal segment */ - { size_t const lastLLSize = litEnd - litPtr; - RETURN_ERROR_IF(lastLLSize > (size_t)(oend-op), dstSize_tooSmall, ""); - if (op != NULL) { - ZSTD_memcpy(op, litPtr, lastLLSize); - op += lastLLSize; - } - } - - return op-ostart; -} - -static size_t -ZSTD_decompressSequencesLong_default(ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - return ZSTD_decompressSequencesLong_body(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); -} -#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT */ - - - -#if DYNAMIC_BMI2 - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG -static TARGET_ATTRIBUTE("bmi2") size_t -DONT_VECTORIZE -ZSTD_decompressSequences_bmi2(ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - return ZSTD_decompressSequences_body(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); -} -#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG */ - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT -static TARGET_ATTRIBUTE("bmi2") size_t -ZSTD_decompressSequencesLong_bmi2(ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - return ZSTD_decompressSequencesLong_body(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); -} -#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT */ - -#endif /* DYNAMIC_BMI2 */ - -typedef size_t (*ZSTD_decompressSequences_t)( - ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame); - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG -static size_t -ZSTD_decompressSequences(ZSTD_DCtx* dctx, void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - DEBUGLOG(5, "ZSTD_decompressSequences"); -#if DYNAMIC_BMI2 - if (dctx->bmi2) { - return ZSTD_decompressSequences_bmi2(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); - } -#endif - return ZSTD_decompressSequences_default(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); -} -#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG */ - - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT -/* ZSTD_decompressSequencesLong() : - * decompression function triggered when a minimum share of offsets is considered "long", - * aka out of cache. - * note : "long" definition seems overloaded here, sometimes meaning "wider than bitstream register", and sometimes meaning "farther than memory cache distance". - * This function will try to mitigate main memory latency through the use of prefetching */ -static size_t -ZSTD_decompressSequencesLong(ZSTD_DCtx* dctx, - void* dst, size_t maxDstSize, - const void* seqStart, size_t seqSize, int nbSeq, - const ZSTD_longOffset_e isLongOffset, - const int frame) -{ - DEBUGLOG(5, "ZSTD_decompressSequencesLong"); -#if DYNAMIC_BMI2 - if (dctx->bmi2) { - return ZSTD_decompressSequencesLong_bmi2(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); - } -#endif - return ZSTD_decompressSequencesLong_default(dctx, dst, maxDstSize, seqStart, seqSize, nbSeq, isLongOffset, frame); -} -#endif /* ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT */ - - - -#if !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT) && \ - !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG) -/* ZSTD_getLongOffsetsShare() : - * condition : offTable must be valid - * @return : "share" of long offsets (arbitrarily defined as > (1<<23)) - * compared to maximum possible of (1< 22) total += 1; - } - - assert(tableLog <= OffFSELog); - total <<= (OffFSELog - tableLog); /* scale to OffFSELog */ - - return total; -} -#endif - -size_t -ZSTD_decompressBlock_internal(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize, const int frame) -{ /* blockType == blockCompressed */ - const BYTE* ip = (const BYTE*)src; - /* isLongOffset must be true if there are long offsets. - * Offsets are long if they are larger than 2^STREAM_ACCUMULATOR_MIN. - * We don't expect that to be the case in 64-bit mode. - * In block mode, window size is not known, so we have to be conservative. - * (note: but it could be evaluated from current-lowLimit) - */ - ZSTD_longOffset_e const isLongOffset = (ZSTD_longOffset_e)(MEM_32bits() && (!frame || (dctx->fParams.windowSize > (1ULL << STREAM_ACCUMULATOR_MIN)))); - DEBUGLOG(5, "ZSTD_decompressBlock_internal (size : %u)", (U32)srcSize); - - RETURN_ERROR_IF(srcSize >= ZSTD_BLOCKSIZE_MAX, srcSize_wrong, ""); - - /* Decode literals section */ - { size_t const litCSize = ZSTD_decodeLiteralsBlock(dctx, src, srcSize); - DEBUGLOG(5, "ZSTD_decodeLiteralsBlock : %u", (U32)litCSize); - if (ZSTD_isError(litCSize)) return litCSize; - ip += litCSize; - srcSize -= litCSize; - } - - /* Build Decoding Tables */ - { - /* These macros control at build-time which decompressor implementation - * we use. If neither is defined, we do some inspection and dispatch at - * runtime. - */ -#if !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT) && \ - !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG) - int usePrefetchDecoder = dctx->ddictIsCold; -#endif - int nbSeq; - size_t const seqHSize = ZSTD_decodeSeqHeaders(dctx, &nbSeq, ip, srcSize); - if (ZSTD_isError(seqHSize)) return seqHSize; - ip += seqHSize; - srcSize -= seqHSize; - - RETURN_ERROR_IF(dst == NULL && nbSeq > 0, dstSize_tooSmall, "NULL not handled"); - -#if !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT) && \ - !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG) - if ( !usePrefetchDecoder - && (!frame || (dctx->fParams.windowSize > (1<<24))) - && (nbSeq>ADVANCED_SEQS) ) { /* could probably use a larger nbSeq limit */ - U32 const shareLongOffsets = ZSTD_getLongOffsetsShare(dctx->OFTptr); - U32 const minShare = MEM_64bits() ? 7 : 20; /* heuristic values, correspond to 2.73% and 7.81% */ - usePrefetchDecoder = (shareLongOffsets >= minShare); - } -#endif - - dctx->ddictIsCold = 0; - -#if !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT) && \ - !defined(ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG) - if (usePrefetchDecoder) -#endif -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_SHORT - return ZSTD_decompressSequencesLong(dctx, dst, dstCapacity, ip, srcSize, nbSeq, isLongOffset, frame); -#endif - -#ifndef ZSTD_FORCE_DECOMPRESS_SEQUENCES_LONG - /* else */ - return ZSTD_decompressSequences(dctx, dst, dstCapacity, ip, srcSize, nbSeq, isLongOffset, frame); -#endif - } -} - - -void ZSTD_checkContinuity(ZSTD_DCtx* dctx, const void* dst, size_t dstSize) -{ - if (dst != dctx->previousDstEnd && dstSize > 0) { /* not contiguous */ - dctx->dictEnd = dctx->previousDstEnd; - dctx->virtualStart = (const char*)dst - ((const char*)(dctx->previousDstEnd) - (const char*)(dctx->prefixStart)); - dctx->prefixStart = dst; - dctx->previousDstEnd = dst; - } -} - - -size_t ZSTD_decompressBlock(ZSTD_DCtx* dctx, - void* dst, size_t dstCapacity, - const void* src, size_t srcSize) -{ - size_t dSize; - ZSTD_checkContinuity(dctx, dst, dstCapacity); - dSize = ZSTD_decompressBlock_internal(dctx, dst, dstCapacity, src, srcSize, /* frame */ 0); - dctx->previousDstEnd = (char*)dst + dSize; - return dSize; -} -/**** ended inlining decompress/zstd_decompress_block.c ****/ diff --git a/WickedEngine/Utility/dxva.h b/WickedEngine/Utility/dxva.h deleted file mode 100644 index ce002e0d8..000000000 --- a/WickedEngine/Utility/dxva.h +++ /dev/null @@ -1,265 +0,0 @@ -#ifndef DXVA_H -#define DXVA_H -// This is a minimal version of dxva.h from the Windows SDK -// It contains only the bare necessary structures for interoping with DirectX Video APIs - -#pragma pack(push, BeforeDXVApacking, 1) - -// H264 (AVC) - -/* H.264/AVC picture entry data structure */ -typedef struct _DXVA_PicEntry_H264 { - union { - struct { - UCHAR Index7Bits : 7; - UCHAR AssociatedFlag : 1; - }; - UCHAR bPicEntry; - }; -} DXVA_PicEntry_H264, * LPDXVA_PicEntry_H264; /* 1 byte */ - -/* H.264/AVC picture parameters structure */ -typedef struct _DXVA_PicParams_H264 { - USHORT wFrameWidthInMbsMinus1; - USHORT wFrameHeightInMbsMinus1; - DXVA_PicEntry_H264 CurrPic; /* flag is bot field flag */ - UCHAR num_ref_frames; - - union { - struct { - USHORT field_pic_flag : 1; - USHORT MbaffFrameFlag : 1; - USHORT residual_colour_transform_flag : 1; - USHORT sp_for_switch_flag : 1; - USHORT chroma_format_idc : 2; - USHORT RefPicFlag : 1; - USHORT constrained_intra_pred_flag : 1; - - USHORT weighted_pred_flag : 1; - USHORT weighted_bipred_idc : 2; - USHORT MbsConsecutiveFlag : 1; - USHORT frame_mbs_only_flag : 1; - USHORT transform_8x8_mode_flag : 1; - USHORT MinLumaBipredSize8x8Flag : 1; - USHORT IntraPicFlag : 1; - }; - USHORT wBitFields; - }; - UCHAR bit_depth_luma_minus8; - UCHAR bit_depth_chroma_minus8; - - USHORT Reserved16Bits; - UINT StatusReportFeedbackNumber; - - DXVA_PicEntry_H264 RefFrameList[16]; /* flag LT */ - INT CurrFieldOrderCnt[2]; - INT FieldOrderCntList[16][2]; - - CHAR pic_init_qs_minus26; - CHAR chroma_qp_index_offset; /* also used for QScb */ - CHAR second_chroma_qp_index_offset; /* also for QScr */ - UCHAR ContinuationFlag; - - /* remainder for parsing */ - CHAR pic_init_qp_minus26; - UCHAR num_ref_idx_l0_active_minus1; - UCHAR num_ref_idx_l1_active_minus1; - UCHAR Reserved8BitsA; - - USHORT FrameNumList[16]; - UINT UsedForReferenceFlags; - USHORT NonExistingFrameFlags; - USHORT frame_num; - - UCHAR log2_max_frame_num_minus4; - UCHAR pic_order_cnt_type; - UCHAR log2_max_pic_order_cnt_lsb_minus4; - UCHAR delta_pic_order_always_zero_flag; - - UCHAR direct_8x8_inference_flag; - UCHAR entropy_coding_mode_flag; - UCHAR pic_order_present_flag; - UCHAR num_slice_groups_minus1; - - UCHAR slice_group_map_type; - UCHAR deblocking_filter_control_present_flag; - UCHAR redundant_pic_cnt_present_flag; - UCHAR Reserved8BitsB; - - USHORT slice_group_change_rate_minus1; - - UCHAR SliceGroupMap[810]; /* 4b/sgmu, Size BT.601 */ - -} DXVA_PicParams_H264, * LPDXVA_PicParams_H264; - -/* H.264/AVC quantization weighting matrix data structure */ -typedef struct _DXVA_Qmatrix_H264 { - UCHAR bScalingLists4x4[6][16]; - UCHAR bScalingLists8x8[2][64]; - -} DXVA_Qmatrix_H264, * LPDXVA_Qmatrix_H264; - -/* H.264/AVC slice control data structure - short form */ -typedef struct _DXVA_Slice_H264_Short { - UINT BSNALunitDataLocation; /* type 1..5 */ - UINT SliceBytesInBuffer; /* for off-host parse */ - USHORT wBadSliceChopping; /* for off-host parse */ -} DXVA_Slice_H264_Short, * LPDXVA_Slice_H264_Short; - - - - -// H265 (HEVC) - -/* HEVC Picture Entry structure */ -typedef struct _DXVA_PicEntry_HEVC -{ - union - { - struct - { - UCHAR Index7Bits : 7; - UCHAR AssociatedFlag : 1; - }; - UCHAR bPicEntry; - }; -} DXVA_PicEntry_HEVC, * LPDXVA_PicEntry_HEVC; - -/* HEVC Picture Parameter structure */ -typedef struct _DXVA_PicParams_HEVC { - USHORT PicWidthInMinCbsY; - USHORT PicHeightInMinCbsY; - union { - struct { - USHORT chroma_format_idc : 2; - USHORT separate_colour_plane_flag : 1; - USHORT bit_depth_luma_minus8 : 3; - USHORT bit_depth_chroma_minus8 : 3; - USHORT log2_max_pic_order_cnt_lsb_minus4 : 4; - USHORT NoPicReorderingFlag : 1; - USHORT NoBiPredFlag : 1; - USHORT ReservedBits1 : 1; - }; - USHORT wFormatAndSequenceInfoFlags; - }; - DXVA_PicEntry_HEVC CurrPic; - UCHAR sps_max_dec_pic_buffering_minus1; - UCHAR log2_min_luma_coding_block_size_minus3; - UCHAR log2_diff_max_min_luma_coding_block_size; - UCHAR log2_min_transform_block_size_minus2; - UCHAR log2_diff_max_min_transform_block_size; - UCHAR max_transform_hierarchy_depth_inter; - UCHAR max_transform_hierarchy_depth_intra; - UCHAR num_short_term_ref_pic_sets; - UCHAR num_long_term_ref_pics_sps; - UCHAR num_ref_idx_l0_default_active_minus1; - UCHAR num_ref_idx_l1_default_active_minus1; - CHAR init_qp_minus26; - UCHAR ucNumDeltaPocsOfRefRpsIdx; - USHORT wNumBitsForShortTermRPSInSlice; - USHORT ReservedBits2; - - union { - struct { - UINT32 scaling_list_enabled_flag : 1; - UINT32 amp_enabled_flag : 1; - UINT32 sample_adaptive_offset_enabled_flag : 1; - UINT32 pcm_enabled_flag : 1; - UINT32 pcm_sample_bit_depth_luma_minus1 : 4; - UINT32 pcm_sample_bit_depth_chroma_minus1 : 4; - UINT32 log2_min_pcm_luma_coding_block_size_minus3 : 2; - UINT32 log2_diff_max_min_pcm_luma_coding_block_size : 2; - UINT32 pcm_loop_filter_disabled_flag : 1; - UINT32 long_term_ref_pics_present_flag : 1; - UINT32 sps_temporal_mvp_enabled_flag : 1; - UINT32 strong_intra_smoothing_enabled_flag : 1; - UINT32 dependent_slice_segments_enabled_flag : 1; - UINT32 output_flag_present_flag : 1; - UINT32 num_extra_slice_header_bits : 3; - UINT32 sign_data_hiding_enabled_flag : 1; - UINT32 cabac_init_present_flag : 1; - UINT32 ReservedBits3 : 5; - }; - UINT32 dwCodingParamToolFlags; - }; - - union { - struct { - UINT32 constrained_intra_pred_flag : 1; - UINT32 transform_skip_enabled_flag : 1; - UINT32 cu_qp_delta_enabled_flag : 1; - UINT32 pps_slice_chroma_qp_offsets_present_flag : 1; - UINT32 weighted_pred_flag : 1; - UINT32 weighted_bipred_flag : 1; - UINT32 transquant_bypass_enabled_flag : 1; - UINT32 tiles_enabled_flag : 1; - UINT32 entropy_coding_sync_enabled_flag : 1; - UINT32 uniform_spacing_flag : 1; - UINT32 loop_filter_across_tiles_enabled_flag : 1; - UINT32 pps_loop_filter_across_slices_enabled_flag : 1; - UINT32 deblocking_filter_override_enabled_flag : 1; - UINT32 pps_deblocking_filter_disabled_flag : 1; - UINT32 lists_modification_present_flag : 1; - UINT32 slice_segment_header_extension_present_flag : 1; - UINT32 IrapPicFlag : 1; - UINT32 IdrPicFlag : 1; - UINT32 IntraPicFlag : 1; - UINT32 ReservedBits4 : 13; - }; - UINT32 dwCodingSettingPicturePropertyFlags; - }; - CHAR pps_cb_qp_offset; - CHAR pps_cr_qp_offset; - UCHAR num_tile_columns_minus1; - UCHAR num_tile_rows_minus1; - USHORT column_width_minus1[19]; - USHORT row_height_minus1[21]; - UCHAR diff_cu_qp_delta_depth; - CHAR pps_beta_offset_div2; - CHAR pps_tc_offset_div2; - UCHAR log2_parallel_merge_level_minus2; - INT CurrPicOrderCntVal; - DXVA_PicEntry_HEVC RefPicList[15]; - UCHAR ReservedBits5; - INT PicOrderCntValList[15]; - UCHAR RefPicSetStCurrBefore[8]; - UCHAR RefPicSetStCurrAfter[8]; - UCHAR RefPicSetLtCurr[8]; - USHORT ReservedBits6; - USHORT ReservedBits7; - UINT StatusReportFeedbackNumber; -} DXVA_PicParams_HEVC, * LPDXVA_PicParams_HEVC; - -/* HEVC Quantizatiuon Matrix structure */ -typedef struct _DXVA_Qmatrix_HEVC -{ - UCHAR ucScalingLists0[6][16]; - UCHAR ucScalingLists1[6][64]; - UCHAR ucScalingLists2[6][64]; - UCHAR ucScalingLists3[2][64]; - UCHAR ucScalingListDCCoefSizeID2[6]; - UCHAR ucScalingListDCCoefSizeID3[2]; -} DXVA_Qmatrix_HEVC, * LPDXVA_Qmatrix_HEVC; - - -/* HEVC Slice Control Structure */ -typedef struct _DXVA_Slice_HEVC_Short -{ - UINT BSNALunitDataLocation; - UINT SliceBytesInBuffer; - USHORT wBadSliceChopping; -} DXVA_Slice_HEVC_Short, * LPDXVA_Slice_HEVC_Short; - -/* H.265/HEVC status reporting data structure */ -typedef struct _DXVA_Status_HEVC { - USHORT StatusReportFeedbackNumber; - DXVA_PicEntry_HEVC CurrPic; - UCHAR bBufType; - UCHAR bStatus; - UCHAR bReserved8Bits; - USHORT wNumMbsAffected; -} DXVA_Status_HEVC, * LPDXVA_Status_HEVC; - -#pragma pack(pop, BeforeDXVApacking) - -#endif // DXVA_H diff --git a/WickedEngine/Utility/minimp4.h b/WickedEngine/Utility/minimp4.h index 2b47fc44f..ae06c02b5 100644 --- a/WickedEngine/Utility/minimp4.h +++ b/WickedEngine/Utility/minimp4.h @@ -1004,11 +1004,11 @@ static int mp4e_write_fragment_header(MP4E_mux_t *mux, int track_num, int data_b unsigned char **stack = stack_base; unsigned char *pdata_offset; unsigned flags; - enum - { - default_sample_duration_present = 0x000008, - default_sample_flags_present = 0x000020, - } e; + //enum + //{ + // default_sample_duration_present = 0x000008, + // default_sample_flags_present = 0x000020, + //} e; track_t *tr = ((track_t*)mux->tracks.data) + track_num; @@ -1208,7 +1208,7 @@ static int mp4e_flush_index(MP4E_mux_t *mux) #define TRACK_HEADER_BYTES 512 index_bytes = FILE_HEADER_BYTES; if (mux->text_comment) - index_bytes += 128 + strlen(mux->text_comment); + index_bytes += (unsigned)128 + (unsigned)strlen(mux->text_comment); for (ntr = 0; ntr < ntracks; ntr++) { track_t *tr = ((track_t*)mux->tracks.data) + ntr; @@ -3185,7 +3185,7 @@ broken_android_meta_hack: // if box is not envelope, just skip it if (i == NELEM(g_envelope_box)) { - if (payload_bytes > file_size) + if ((int64_t)payload_bytes > file_size) { eof_flag = 1; } else diff --git a/WickedEngine/Utility/qoi.h b/WickedEngine/Utility/qoi.h deleted file mode 100644 index 31d4ce529..000000000 --- a/WickedEngine/Utility/qoi.h +++ /dev/null @@ -1,669 +0,0 @@ -/* - -QOI - The "Quite OK Image" format for fast, lossless image compression - -Dominic Szablewski - https://phoboslab.org - - --- LICENSE: The MIT License(MIT) - -Copyright(c) 2021 Dominic Szablewski - -Permission is hereby granted, free of charge, to any person obtaining a copy of -this software and associated documentation files(the "Software"), to deal in -the Software without restriction, including without limitation the rights to -use, copy, modify, merge, publish, distribute, sublicense, and / or sell copies -of the Software, and to permit persons to whom the Software is furnished to do -so, subject to the following conditions : -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. - - --- About - -QOI encodes and decodes images in a lossless format. Compared to stb_image and -stb_image_write QOI offers 20x-50x faster encoding, 3x-4x faster decoding and -20% better compression. - - --- Synopsis - -// Define `QOI_IMPLEMENTATION` in *one* C/C++ file before including this -// library to create the implementation. - -#define QOI_IMPLEMENTATION -#include "qoi.h" - -// Encode and store an RGBA buffer to the file system. The qoi_desc describes -// the input pixel data. -qoi_write("image_new.qoi", rgba_pixels, &(qoi_desc){ - .width = 1920, - .height = 1080, - .channels = 4, - .colorspace = QOI_SRGB -}); - -// Load and decode a QOI image from the file system into a 32bbp RGBA buffer. -// The qoi_desc struct will be filled with the width, height, number of channels -// and colorspace read from the file header. -qoi_desc desc; -void *rgba_pixels = qoi_read("image.qoi", &desc, 4); - - - --- Documentation - -This library provides the following functions; -- qoi_read -- read and decode a QOI file -- qoi_decode -- decode the raw bytes of a QOI image from memory -- qoi_write -- encode and write a QOI file -- qoi_encode -- encode an rgba buffer into a QOI image in memory - -See the function declaration below for the signature and more information. - -If you don't want/need the qoi_read and qoi_write functions, you can define -QOI_NO_STDIO before including this library. - -This library uses malloc() and free(). To supply your own malloc implementation -you can define QOI_MALLOC and QOI_FREE before including this library. - -This library uses memset() to zero-initialize the index. To supply your own -implementation you can define QOI_ZEROARR before including this library. - - --- Data Format - -A QOI file has a 14 byte header, followed by any number of data "chunks" and an -8-byte end marker. - -struct qoi_header_t { - char magic[4]; // magic bytes "qoif" - uint32_t width; // image width in pixels (BE) - uint32_t height; // image height in pixels (BE) - uint8_t channels; // 3 = RGB, 4 = RGBA - uint8_t colorspace; // 0 = sRGB with linear alpha, 1 = all channels linear -}; - -Images are encoded row by row, left to right, top to bottom. The decoder and -encoder start with {r: 0, g: 0, b: 0, a: 255} as the previous pixel value. An -image is complete when all pixels specified by width * height have been covered. - -Pixels are encoded as - - a run of the previous pixel - - an index into an array of previously seen pixels - - a difference to the previous pixel value in r,g,b - - full r,g,b or r,g,b,a values - -The color channels are assumed to not be premultiplied with the alpha channel -("un-premultiplied alpha"). - -A running array[64] (zero-initialized) of previously seen pixel values is -maintained by the encoder and decoder. Each pixel that is seen by the encoder -and decoder is put into this array at the position formed by a hash function of -the color value. In the encoder, if the pixel value at the index matches the -current pixel, this index position is written to the stream as QOI_OP_INDEX. -The hash function for the index is: - - index_position = (r * 3 + g * 5 + b * 7 + a * 11) % 64 - -Each chunk starts with a 2- or 8-bit tag, followed by a number of data bits. The -bit length of chunks is divisible by 8 - i.e. all chunks are byte aligned. All -values encoded in these data bits have the most significant bit on the left. - -The 8-bit tags have precedence over the 2-bit tags. A decoder must check for the -presence of an 8-bit tag first. - -The byte stream's end is marked with 7 0x00 bytes followed a single 0x01 byte. - - -The possible chunks are: - - -.- QOI_OP_INDEX ----------. -| Byte[0] | -| 7 6 5 4 3 2 1 0 | -|-------+-----------------| -| 0 0 | index | -`-------------------------` -2-bit tag b00 -6-bit index into the color index array: 0..63 - -A valid encoder must not issue 2 or more consecutive QOI_OP_INDEX chunks to the -same index. QOI_OP_RUN should be used instead. - - -.- QOI_OP_DIFF -----------. -| Byte[0] | -| 7 6 5 4 3 2 1 0 | -|-------+-----+-----+-----| -| 0 1 | dr | dg | db | -`-------------------------` -2-bit tag b01 -2-bit red channel difference from the previous pixel between -2..1 -2-bit green channel difference from the previous pixel between -2..1 -2-bit blue channel difference from the previous pixel between -2..1 - -The difference to the current channel values are using a wraparound operation, -so "1 - 2" will result in 255, while "255 + 1" will result in 0. - -Values are stored as unsigned integers with a bias of 2. E.g. -2 is stored as -0 (b00). 1 is stored as 3 (b11). - -The alpha value remains unchanged from the previous pixel. - - -.- QOI_OP_LUMA -------------------------------------. -| Byte[0] | Byte[1] | -| 7 6 5 4 3 2 1 0 | 7 6 5 4 3 2 1 0 | -|-------+-----------------+-------------+-----------| -| 1 0 | green diff | dr - dg | db - dg | -`---------------------------------------------------` -2-bit tag b10 -6-bit green channel difference from the previous pixel -32..31 -4-bit red channel difference minus green channel difference -8..7 -4-bit blue channel difference minus green channel difference -8..7 - -The green channel is used to indicate the general direction of change and is -encoded in 6 bits. The red and blue channels (dr and db) base their diffs off -of the green channel difference and are encoded in 4 bits. I.e.: - dr_dg = (cur_px.r - prev_px.r) - (cur_px.g - prev_px.g) - db_dg = (cur_px.b - prev_px.b) - (cur_px.g - prev_px.g) - -The difference to the current channel values are using a wraparound operation, -so "10 - 13" will result in 253, while "250 + 7" will result in 1. - -Values are stored as unsigned integers with a bias of 32 for the green channel -and a bias of 8 for the red and blue channel. - -The alpha value remains unchanged from the previous pixel. - - -.- QOI_OP_RUN ------------. -| Byte[0] | -| 7 6 5 4 3 2 1 0 | -|-------+-----------------| -| 1 1 | run | -`-------------------------` -2-bit tag b11 -6-bit run-length repeating the previous pixel: 1..62 - -The run-length is stored with a bias of -1. Note that the run-lengths 63 and 64 -(b111110 and b111111) are illegal as they are occupied by the QOI_OP_RGB and -QOI_OP_RGBA tags. - - -.- QOI_OP_RGB ------------------------------------------. -| Byte[0] | Byte[1] | Byte[2] | Byte[3] | -| 7 6 5 4 3 2 1 0 | 7 .. 0 | 7 .. 0 | 7 .. 0 | -|-------------------------+---------+---------+---------| -| 1 1 1 1 1 1 1 0 | red | green | blue | -`-------------------------------------------------------` -8-bit tag b11111110 -8-bit red channel value -8-bit green channel value -8-bit blue channel value - -The alpha value remains unchanged from the previous pixel. - - -.- QOI_OP_RGBA ---------------------------------------------------. -| Byte[0] | Byte[1] | Byte[2] | Byte[3] | Byte[4] | -| 7 6 5 4 3 2 1 0 | 7 .. 0 | 7 .. 0 | 7 .. 0 | 7 .. 0 | -|-------------------------+---------+---------+---------+---------| -| 1 1 1 1 1 1 1 1 | red | green | blue | alpha | -`-----------------------------------------------------------------` -8-bit tag b11111111 -8-bit red channel value -8-bit green channel value -8-bit blue channel value -8-bit alpha channel value - -*/ - - -/* ----------------------------------------------------------------------------- -Header - Public functions */ - -#ifndef QOI_H -#define QOI_H - -#ifdef __cplusplus -extern "C" { -#endif - -/* A pointer to a qoi_desc struct has to be supplied to all of qoi's functions. -It describes either the input format (for qoi_write and qoi_encode), or is -filled with the description read from the file header (for qoi_read and -qoi_decode). - -The colorspace in this qoi_desc is an enum where - 0 = sRGB, i.e. gamma scaled RGB channels and a linear alpha channel - 1 = all channels are linear -You may use the constants QOI_SRGB or QOI_LINEAR. The colorspace is purely -informative. It will be saved to the file header, but does not affect -how chunks are en-/decoded. */ - -#define QOI_SRGB 0 -#define QOI_LINEAR 1 - -typedef struct { - unsigned int width; - unsigned int height; - unsigned char channels; - unsigned char colorspace; -} qoi_desc; - -#ifndef QOI_NO_STDIO - -/* Encode raw RGB or RGBA pixels into a QOI image and write it to the file -system. The qoi_desc struct must be filled with the image width, height, -number of channels (3 = RGB, 4 = RGBA) and the colorspace. - -The function returns 0 on failure (invalid parameters, or fopen or malloc -failed) or the number of bytes written on success. */ - -int qoi_write(const char *filename, const void *data, const qoi_desc *desc); - - -/* Read and decode a QOI image from the file system. If channels is 0, the -number of channels from the file header is used. If channels is 3 or 4 the -output format will be forced into this number of channels. - -The function either returns NULL on failure (invalid data, or malloc or fopen -failed) or a pointer to the decoded pixels. On success, the qoi_desc struct -will be filled with the description from the file header. - -The returned pixel data should be free()d after use. */ - -void *qoi_read(const char *filename, qoi_desc *desc, int channels); - -#endif /* QOI_NO_STDIO */ - - -/* Encode raw RGB or RGBA pixels into a QOI image in memory. - -The function either returns NULL on failure (invalid parameters or malloc -failed) or a pointer to the encoded data on success. On success the out_len -is set to the size in bytes of the encoded data. - -The returned qoi data should be free()d after use. */ - -void *qoi_encode(const void *data, const qoi_desc *desc, int *out_len); - - -/* Decode a QOI image from memory. - -The function either returns NULL on failure (invalid parameters or malloc -failed) or a pointer to the decoded pixels. On success, the qoi_desc struct -is filled with the description from the file header. - -The returned pixel data should be free()d after use. */ - -void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels); - - -#ifdef __cplusplus -} -#endif -#endif /* QOI_H */ - - -/* ----------------------------------------------------------------------------- -Implementation */ - -#ifdef QOI_IMPLEMENTATION -#include -#include - -#ifndef QOI_MALLOC - #define QOI_MALLOC(sz) malloc(sz) - #define QOI_FREE(p) free(p) -#endif -#ifndef QOI_ZEROARR - #define QOI_ZEROARR(a) memset((a),0,sizeof(a)) -#endif - -#define QOI_OP_INDEX 0x00 /* 00xxxxxx */ -#define QOI_OP_DIFF 0x40 /* 01xxxxxx */ -#define QOI_OP_LUMA 0x80 /* 10xxxxxx */ -#define QOI_OP_RUN 0xc0 /* 11xxxxxx */ -#define QOI_OP_RGB 0xfe /* 11111110 */ -#define QOI_OP_RGBA 0xff /* 11111111 */ - -#define QOI_MASK_2 0xc0 /* 11000000 */ - -#define QOI_COLOR_HASH(C) (C.rgba.r*3 + C.rgba.g*5 + C.rgba.b*7 + C.rgba.a*11) -#define QOI_MAGIC \ - (((unsigned int)'q') << 24 | ((unsigned int)'o') << 16 | \ - ((unsigned int)'i') << 8 | ((unsigned int)'f')) -#define QOI_HEADER_SIZE 14 - -/* 2GB is the max file size that this implementation can safely handle. We guard -against anything larger than that, assuming the worst case with 5 bytes per -pixel, rounded down to a nice clean value. 400 million pixels ought to be -enough for anybody. */ -#define QOI_PIXELS_MAX ((unsigned int)400000000) - -typedef union { - struct { unsigned char r, g, b, a; } rgba; - unsigned int v; -} qoi_rgba_t; - -static const unsigned char qoi_padding[8] = {0,0,0,0,0,0,0,1}; - -static void qoi_write_32(unsigned char *bytes, int *p, unsigned int v) { - bytes[(*p)++] = (0xff000000 & v) >> 24; - bytes[(*p)++] = (0x00ff0000 & v) >> 16; - bytes[(*p)++] = (0x0000ff00 & v) >> 8; - bytes[(*p)++] = (0x000000ff & v); -} - -static unsigned int qoi_read_32(const unsigned char *bytes, int *p) { - unsigned int a = bytes[(*p)++]; - unsigned int b = bytes[(*p)++]; - unsigned int c = bytes[(*p)++]; - unsigned int d = bytes[(*p)++]; - return a << 24 | b << 16 | c << 8 | d; -} - -void *qoi_encode(const void *data, const qoi_desc *desc, int *out_len) { - int i, max_size, p, run; - int px_len, px_end, px_pos, channels; - unsigned char *bytes; - const unsigned char *pixels; - qoi_rgba_t index[64]; - qoi_rgba_t px, px_prev; - - if ( - data == NULL || out_len == NULL || desc == NULL || - desc->width == 0 || desc->height == 0 || - desc->channels < 3 || desc->channels > 4 || - desc->colorspace > 1 || - desc->height >= QOI_PIXELS_MAX / desc->width - ) { - return NULL; - } - - max_size = - desc->width * desc->height * (desc->channels + 1) + - QOI_HEADER_SIZE + sizeof(qoi_padding); - - p = 0; - bytes = (unsigned char *) QOI_MALLOC(max_size); - if (!bytes) { - return NULL; - } - - qoi_write_32(bytes, &p, QOI_MAGIC); - qoi_write_32(bytes, &p, desc->width); - qoi_write_32(bytes, &p, desc->height); - bytes[p++] = desc->channels; - bytes[p++] = desc->colorspace; - - - pixels = (const unsigned char *)data; - - QOI_ZEROARR(index); - - run = 0; - px_prev.rgba.r = 0; - px_prev.rgba.g = 0; - px_prev.rgba.b = 0; - px_prev.rgba.a = 255; - px = px_prev; - - px_len = desc->width * desc->height * desc->channels; - px_end = px_len - desc->channels; - channels = desc->channels; - - for (px_pos = 0; px_pos < px_len; px_pos += channels) { - px.rgba.r = pixels[px_pos + 0]; - px.rgba.g = pixels[px_pos + 1]; - px.rgba.b = pixels[px_pos + 2]; - - if (channels == 4) { - px.rgba.a = pixels[px_pos + 3]; - } - - if (px.v == px_prev.v) { - run++; - if (run == 62 || px_pos == px_end) { - bytes[p++] = QOI_OP_RUN | (run - 1); - run = 0; - } - } - else { - int index_pos; - - if (run > 0) { - bytes[p++] = QOI_OP_RUN | (run - 1); - run = 0; - } - - index_pos = QOI_COLOR_HASH(px) % 64; - - if (index[index_pos].v == px.v) { - bytes[p++] = QOI_OP_INDEX | index_pos; - } - else { - index[index_pos] = px; - - if (px.rgba.a == px_prev.rgba.a) { - signed char vr = px.rgba.r - px_prev.rgba.r; - signed char vg = px.rgba.g - px_prev.rgba.g; - signed char vb = px.rgba.b - px_prev.rgba.b; - - signed char vg_r = vr - vg; - signed char vg_b = vb - vg; - - if ( - vr > -3 && vr < 2 && - vg > -3 && vg < 2 && - vb > -3 && vb < 2 - ) { - bytes[p++] = QOI_OP_DIFF | (vr + 2) << 4 | (vg + 2) << 2 | (vb + 2); - } - else if ( - vg_r > -9 && vg_r < 8 && - vg > -33 && vg < 32 && - vg_b > -9 && vg_b < 8 - ) { - bytes[p++] = QOI_OP_LUMA | (vg + 32); - bytes[p++] = (vg_r + 8) << 4 | (vg_b + 8); - } - else { - bytes[p++] = QOI_OP_RGB; - bytes[p++] = px.rgba.r; - bytes[p++] = px.rgba.g; - bytes[p++] = px.rgba.b; - } - } - else { - bytes[p++] = QOI_OP_RGBA; - bytes[p++] = px.rgba.r; - bytes[p++] = px.rgba.g; - bytes[p++] = px.rgba.b; - bytes[p++] = px.rgba.a; - } - } - } - px_prev = px; - } - - for (i = 0; i < (int)sizeof(qoi_padding); i++) { - bytes[p++] = qoi_padding[i]; - } - - *out_len = p; - return bytes; -} - -void *qoi_decode(const void *data, int size, qoi_desc *desc, int channels) { - const unsigned char *bytes; - unsigned int header_magic; - unsigned char *pixels; - qoi_rgba_t index[64]; - qoi_rgba_t px; - int px_len, chunks_len, px_pos; - int p = 0, run = 0; - - if ( - data == NULL || desc == NULL || - (channels != 0 && channels != 3 && channels != 4) || - size < QOI_HEADER_SIZE + (int)sizeof(qoi_padding) - ) { - return NULL; - } - - bytes = (const unsigned char *)data; - - header_magic = qoi_read_32(bytes, &p); - desc->width = qoi_read_32(bytes, &p); - desc->height = qoi_read_32(bytes, &p); - desc->channels = bytes[p++]; - desc->colorspace = bytes[p++]; - - if ( - desc->width == 0 || desc->height == 0 || - desc->channels < 3 || desc->channels > 4 || - desc->colorspace > 1 || - header_magic != QOI_MAGIC || - desc->height >= QOI_PIXELS_MAX / desc->width - ) { - return NULL; - } - - if (channels == 0) { - channels = desc->channels; - } - - px_len = desc->width * desc->height * channels; - pixels = (unsigned char *) QOI_MALLOC(px_len); - if (!pixels) { - return NULL; - } - - QOI_ZEROARR(index); - px.rgba.r = 0; - px.rgba.g = 0; - px.rgba.b = 0; - px.rgba.a = 255; - - chunks_len = size - (int)sizeof(qoi_padding); - for (px_pos = 0; px_pos < px_len; px_pos += channels) { - if (run > 0) { - run--; - } - else if (p < chunks_len) { - int b1 = bytes[p++]; - - if (b1 == QOI_OP_RGB) { - px.rgba.r = bytes[p++]; - px.rgba.g = bytes[p++]; - px.rgba.b = bytes[p++]; - } - else if (b1 == QOI_OP_RGBA) { - px.rgba.r = bytes[p++]; - px.rgba.g = bytes[p++]; - px.rgba.b = bytes[p++]; - px.rgba.a = bytes[p++]; - } - else if ((b1 & QOI_MASK_2) == QOI_OP_INDEX) { - px = index[b1]; - } - else if ((b1 & QOI_MASK_2) == QOI_OP_DIFF) { - px.rgba.r += ((b1 >> 4) & 0x03) - 2; - px.rgba.g += ((b1 >> 2) & 0x03) - 2; - px.rgba.b += ( b1 & 0x03) - 2; - } - else if ((b1 & QOI_MASK_2) == QOI_OP_LUMA) { - int b2 = bytes[p++]; - int vg = (b1 & 0x3f) - 32; - px.rgba.r += vg - 8 + ((b2 >> 4) & 0x0f); - px.rgba.g += vg; - px.rgba.b += vg - 8 + (b2 & 0x0f); - } - else if ((b1 & QOI_MASK_2) == QOI_OP_RUN) { - run = (b1 & 0x3f); - } - - index[QOI_COLOR_HASH(px) % 64] = px; - } - - pixels[px_pos + 0] = px.rgba.r; - pixels[px_pos + 1] = px.rgba.g; - pixels[px_pos + 2] = px.rgba.b; - - if (channels == 4) { - pixels[px_pos + 3] = px.rgba.a; - } - } - - return pixels; -} - -#ifndef QOI_NO_STDIO -#include - -int qoi_write(const char *filename, const void *data, const qoi_desc *desc) { - FILE *f = fopen(filename, "wb"); - int size; - void *encoded; - - if (!f) { - return 0; - } - - encoded = qoi_encode(data, desc, &size); - if (!encoded) { - fclose(f); - return 0; - } - - fwrite(encoded, 1, size, f); - fclose(f); - - QOI_FREE(encoded); - return size; -} - -void *qoi_read(const char *filename, qoi_desc *desc, int channels) { - FILE *f = fopen(filename, "rb"); - int size, bytes_read; - void *pixels, *data; - - if (!f) { - return NULL; - } - - fseek(f, 0, SEEK_END); - size = ftell(f); - if (size <= 0) { - fclose(f); - return NULL; - } - fseek(f, 0, SEEK_SET); - - data = QOI_MALLOC(size); - if (!data) { - fclose(f); - return NULL; - } - - bytes_read = fread(data, 1, size, f); - fclose(f); - - pixels = qoi_decode(data, bytes_read, desc, channels); - QOI_FREE(data); - return pixels; -} - -#endif /* QOI_NO_STDIO */ -#endif /* QOI_IMPLEMENTATION */ diff --git a/WickedEngine/Utility/spirv_reflect.c b/WickedEngine/Utility/spirv_reflect.c index efb1149e1..50986b52d 100644 --- a/WickedEngine/Utility/spirv_reflect.c +++ b/WickedEngine/Utility/spirv_reflect.c @@ -42,12 +42,13 @@ // clang-format off enum { - SPIRV_STARTING_WORD_INDEX = 5, - SPIRV_WORD_SIZE = sizeof(uint32_t), - SPIRV_BYTE_WIDTH = 8, - SPIRV_MINIMUM_FILE_SIZE = SPIRV_STARTING_WORD_INDEX * SPIRV_WORD_SIZE, - SPIRV_DATA_ALIGNMENT = 4 * SPIRV_WORD_SIZE, // 16 - SPIRV_ACCESS_CHAIN_INDEX_OFFSET = 4, + SPIRV_STARTING_WORD_INDEX = 5, + SPIRV_WORD_SIZE = sizeof(uint32_t), + SPIRV_BYTE_WIDTH = 8, + SPIRV_MINIMUM_FILE_SIZE = SPIRV_STARTING_WORD_INDEX * SPIRV_WORD_SIZE, + SPIRV_DATA_ALIGNMENT = 4 * SPIRV_WORD_SIZE, // 16 + SPIRV_ACCESS_CHAIN_INDEX_OFFSET = 4, + SPIRV_PHYSICAL_STORAGE_POINTER_SIZE = 8, // Pointers are defined as 64-bit }; enum { @@ -1986,6 +1987,13 @@ static SpvReflectResult ParseType(SpvReflectPrvParser* p_parser, SpvReflectPrvNo p_type->type_flags |= SPV_REFLECT_TYPE_FLAG_REF; IF_READU32_CAST(result, p_parser, p_node->word_offset + 2, SpvStorageClass, p_type->storage_class); + SpvReflectPrvNode* p_next_node = FindNode(p_parser, p_node->type_id); + if (IsNull(p_next_node)) { + result = SPV_REFLECT_RESULT_ERROR_SPIRV_INVALID_ID_REFERENCE; + SPV_REFLECT_ASSERT(false); + break; + } + bool found_recursion = false; if (p_type->storage_class == SpvStorageClassPhysicalStorageBuffer) { // Need to make sure we haven't started an infinite recursive loop @@ -1997,7 +2005,7 @@ static SpvReflectResult ParseType(SpvReflectPrvParser* p_parser, SpvReflectPrvNo return SPV_REFLECT_RESULT_SUCCESS; } } - if (!found_recursion) { + if (!found_recursion && p_next_node->op == SpvOpTypeStruct) { p_parser->physical_pointer_struct_count++; p_parser->physical_pointer_check[p_parser->physical_pointer_count] = p_type; p_parser->physical_pointer_count++; @@ -2007,12 +2015,7 @@ static SpvReflectResult ParseType(SpvReflectPrvParser* p_parser, SpvReflectPrvNo } } - // Parse type - SpvReflectPrvNode* p_next_node = FindNode(p_parser, p_node->type_id); - if (IsNull(p_next_node)) { - result = SPV_REFLECT_RESULT_ERROR_SPIRV_INVALID_ID_REFERENCE; - SPV_REFLECT_ASSERT(false); - } else if (!found_recursion) { + if (!found_recursion) { if (p_next_node->op == SpvOpTypeStruct) { p_type->struct_type_description = FindType(p_module, p_next_node->result_id); } @@ -2188,7 +2191,8 @@ static SpvReflectResult ParseDescriptorBindings(SpvReflectPrvParser* p_parser, S // from the pointer so that we can use it to deduce deescriptor types. SpvStorageClass pointer_storage_class = SpvStorageClassMax; if (p_type->op == SpvOpTypePointer) { - pointer_storage_class = p_type->storage_class; + assert(p_type->storage_class != -1 && "Pointer types must have a valid storage class."); + pointer_storage_class = (SpvStorageClass)p_type->storage_class; // Find the type's node SpvReflectPrvNode* p_type_node = FindNode(p_parser, p_type->id); if (IsNull(p_type_node)) { @@ -2544,15 +2548,19 @@ static SpvReflectResult ParseDescriptorBlockVariable(SpvReflectPrvParser* p_pars } } if (!found_recursion) { - uint32_t struct_id = FindType(p_module, p_member_type->id)->struct_type_description->id; - p_parser->physical_pointer_structs[p_parser->physical_pointer_struct_count].struct_id = struct_id; - p_parser->physical_pointer_structs[p_parser->physical_pointer_struct_count].p_var = p_member_var; - p_parser->physical_pointer_struct_count++; + SpvReflectTypeDescription* struct_type = FindType(p_module, p_member_type->id); + // could be pointer directly to non-struct type here + if (struct_type->struct_type_description) { + uint32_t struct_id = struct_type->struct_type_description->id; + p_parser->physical_pointer_structs[p_parser->physical_pointer_struct_count].struct_id = struct_id; + p_parser->physical_pointer_structs[p_parser->physical_pointer_struct_count].p_var = p_member_var; + p_parser->physical_pointer_struct_count++; - p_parser->physical_pointer_check[p_parser->physical_pointer_count] = p_member_type; - p_parser->physical_pointer_count++; - if (p_parser->physical_pointer_count >= MAX_RECURSIVE_PHYSICAL_POINTER_CHECK) { - return SPV_REFLECT_RESULT_ERROR_SPIRV_MAX_RECURSIVE_EXCEEDED; + p_parser->physical_pointer_check[p_parser->physical_pointer_count] = p_member_type; + p_parser->physical_pointer_count++; + if (p_parser->physical_pointer_count >= MAX_RECURSIVE_PHYSICAL_POINTER_CHECK) { + return SPV_REFLECT_RESULT_ERROR_SPIRV_MAX_RECURSIVE_EXCEEDED; + } } } @@ -2723,7 +2731,13 @@ static SpvReflectResult ParseDescriptorBlockVariableSizes(SpvReflectPrvParser* p if (IsNull(p_member_type)) { return SPV_REFLECT_RESULT_ERROR_SPIRV_INVALID_ID_REFERENCE; } - assert(p_member_type->op == SpvOpTypeStruct); + + // If we found a struct, we need to fall through and get the size of it or else we grab the size here + if (p_member_type->op != SpvOpTypeStruct) { + // If we hit this, we are seeing a POD pointer and the size is fixed + p_member_var->size = SPIRV_PHYSICAL_STORAGE_POINTER_SIZE; + break; + } FALLTHROUGH; } @@ -2815,19 +2829,11 @@ static void MarkSelfAndAllMemberVarsAsUsed(SpvReflectBlockVariable* p_var) { p_var->flags &= ~SPV_REFLECT_VARIABLE_FLAGS_UNUSED; SpvOp op_type = p_var->type_description->op; - switch (op_type) { - default: - break; - - case SpvOpTypeArray: { - } break; - - case SpvOpTypeStruct: { - for (uint32_t i = 0; i < p_var->member_count; ++i) { - SpvReflectBlockVariable* p_member_var = &p_var->members[i]; - MarkSelfAndAllMemberVarsAsUsed(p_member_var); - } - } break; + if (op_type == SpvOpTypeStruct) { + for (uint32_t i = 0; i < p_var->member_count; ++i) { + SpvReflectBlockVariable* p_member_var = &p_var->members[i]; + MarkSelfAndAllMemberVarsAsUsed(p_member_var); + } } } @@ -2944,7 +2950,10 @@ static SpvReflectResult ParseDescriptorBlockVariableUsage(SpvReflectPrvParser* p if (result != SPV_REFLECT_RESULT_SUCCESS) { return result; } - } else if (!is_pointer_to_pointer) { + } else if (is_pointer_to_pointer) { + // Clear UNUSED flag, but only for the pointer + p_member_var->flags &= ~SPV_REFLECT_VARIABLE_FLAGS_UNUSED; + } else { // Clear UNUSED flag for remaining variables MarkSelfAndAllMemberVarsAsUsed(p_member_var); } @@ -4015,7 +4024,7 @@ static SpvReflectResult ParsePushConstantBlocks(SpvReflectPrvParser* p_parser, S } p_push_constant->name = p_node->name; - result = ParseDescriptorBlockVariableSizes(p_parser, p_module, true, false, false, p_push_constant); + result = ParseDescriptorBlockVariableSizes(p_parser, p_module, true, false, true, p_push_constant); if (result != SPV_REFLECT_RESULT_SUCCESS) { return result; } diff --git a/WickedEngine/Utility/spirv_reflect.h b/WickedEngine/Utility/spirv_reflect.h index 9a42f14ee..eea30bd71 100644 --- a/WickedEngine/Utility/spirv_reflect.h +++ b/WickedEngine/Utility/spirv_reflect.h @@ -393,7 +393,9 @@ typedef struct SpvReflectTypeDescription { const char* type_name; // Non-NULL if type is member of a struct const char* struct_member_name; - SpvStorageClass storage_class; + + // The storage class (SpvStorageClass) if the type, and -1 if it does not have a storage class. + int storage_class; SpvReflectTypeFlags type_flags; SpvReflectDecorationFlags decoration_flags; @@ -429,7 +431,9 @@ typedef struct SpvReflectInterfaceVariable { SpvStorageClass storage_class; const char* semantic; SpvReflectDecorationFlags decoration_flags; - SpvBuiltIn built_in; + + // The builtin id (SpvBuiltIn) if the variable is a builtin, and -1 otherwise. + int built_in; SpvReflectNumericTraits numeric; SpvReflectArrayTraits array; @@ -1801,9 +1805,9 @@ inline const char* ShaderModule::GetEntryPointName() const { return this->GetEntryPointName(0); } -/*! @fn GetEntryPoint +/*! @fn GetSourceFile - @return Returns entry point + @return Returns source file */ inline const char* ShaderModule::GetSourceFile() const { diff --git a/WickedEngine/Utility/utility_common.cpp b/WickedEngine/Utility/utility_common.cpp index 2290fcd95..7aa1dd96a 100644 --- a/WickedEngine/Utility/utility_common.cpp +++ b/WickedEngine/Utility/utility_common.cpp @@ -15,41 +15,10 @@ #define STB_TRUETYPE_IMPLEMENTATION #include "stb_truetype.h" -#define QOI_IMPLEMENTATION -#include "qoi.h" - #define MINIMP4_IMPLEMENTATION #include "minimp4.h" #undef RETURN_ERROR #include "mikktspace.c" - -// Basis Universal library sources are compiled below for simplicity: - -//#define BASISU_FORCE_DEVEL_MESSAGES 1 -#define BASISU_NO_ITERATOR_DEBUG_LEVEL -#include "basis_universal/transcoder/basisu_transcoder.cpp" - -#undef _CRT_SECURE_NO_WARNINGS -#include "basis_universal/encoder/jpgd.cpp" -#include "basis_universal/encoder/basisu_backend.cpp" -#include "basis_universal/encoder/basisu_basis_file.cpp" -#include "basis_universal/encoder/basisu_bc7enc.cpp" -#include "basis_universal/encoder/basisu_comp.cpp" -#include "basis_universal/encoder/basisu_enc.cpp" -#include "basis_universal/encoder/basisu_etc.cpp" -#include "basis_universal/encoder/basisu_frontend.cpp" -#include "basis_universal/encoder/basisu_gpu_texture.cpp" -#include "basis_universal/encoder/basisu_kernels_sse.cpp" -#include "basis_universal/encoder/basisu_opencl.cpp" -#include "basis_universal/encoder/basisu_pvrtc1_4.cpp" -#include "basis_universal/encoder/basisu_resampler.cpp" -#include "basis_universal/encoder/basisu_resample_filters.cpp" -#include "basis_universal/encoder/basisu_ssim.cpp" -#include "basis_universal/encoder/basisu_uastc_enc.cpp" -#include "basis_universal/encoder/pvpngreader.cpp" - -#undef CLAMP -//#include "basis_universal/zstd/zstddeclib.c" -#include "basis_universal/zstd/zstd.c" +#include "zstd/zstd.c" diff --git a/WickedEngine/Utility/basis_universal/zstd/LICENSE b/WickedEngine/Utility/zstd/LICENSE similarity index 100% rename from WickedEngine/Utility/basis_universal/zstd/LICENSE rename to WickedEngine/Utility/zstd/LICENSE diff --git a/WickedEngine/Utility/basis_universal/zstd/zstd.c b/WickedEngine/Utility/zstd/zstd.c similarity index 100% rename from WickedEngine/Utility/basis_universal/zstd/zstd.c rename to WickedEngine/Utility/zstd/zstd.c diff --git a/WickedEngine/Utility/basis_universal/zstd/zstd.h b/WickedEngine/Utility/zstd/zstd.h similarity index 100% rename from WickedEngine/Utility/basis_universal/zstd/zstd.h rename to WickedEngine/Utility/zstd/zstd.h diff --git a/WickedEngine/wiGraphicsDevice_DX12.cpp b/WickedEngine/wiGraphicsDevice_DX12.cpp index 79bf87526..30cb42478 100644 --- a/WickedEngine/wiGraphicsDevice_DX12.cpp +++ b/WickedEngine/wiGraphicsDevice_DX12.cpp @@ -22,7 +22,8 @@ DEFINE_GUID(D3D12_VIDEO_DECODE_PROFILE_H264, 0x1b81be68, 0xa0c7, 0x11d3, 0xb9, 0 #include "Utility/D3D12MemAlloc.cpp" // include this here because we use D3D12MA_D3D12_HEADERS_ALREADY_INCLUDED #include "Utility/h264.h" -#include "Utility/dxva.h" + +#include #include #include diff --git a/WickedEngine/wiHelper.cpp b/WickedEngine/wiHelper.cpp index c6d9ec624..822ede32e 100644 --- a/WickedEngine/wiHelper.cpp +++ b/WickedEngine/wiHelper.cpp @@ -7,9 +7,7 @@ #include "Utility/lodepng.h" #include "Utility/dds.h" #include "Utility/stb_image_write.h" -#include "Utility/basis_universal/encoder/basisu_comp.h" -#include "Utility/basis_universal/encoder/basisu_gpu_texture.h" -#include "Utility/basis_universal/zstd/zstd.h" +#include "Utility/zstd/zstd.h" #include #include @@ -512,11 +510,6 @@ namespace wi::helper mip_depth = std::max(1u, mip_depth / 2); } - bool basis = !extension.compare("BASIS"); - bool ktx2 = !extension.compare("KTX2"); - basisu::image basis_image; - basisu::vector basis_mipmaps; - int dst_channel_count = 4; if (desc.format == Format::R10G10B10A2_UNORM) { @@ -675,124 +668,11 @@ namespace wi::helper // This can be saved by reducing target channel count, no conversion needed dst_channel_count = 2; } - else if (IsFormatBlockCompressed(desc.format)) - { - basisu::texture_format fmt; - switch (desc.format) - { - default: - assert(0); - return false; - case Format::BC1_UNORM: - case Format::BC1_UNORM_SRGB: - fmt = basisu::texture_format::cBC1; - break; - case Format::BC3_UNORM: - case Format::BC3_UNORM_SRGB: - fmt = basisu::texture_format::cBC3; - break; - case Format::BC4_UNORM: - fmt = basisu::texture_format::cBC4; - break; - case Format::BC5_UNORM: - fmt = basisu::texture_format::cBC5; - break; - case Format::BC7_UNORM: - case Format::BC7_UNORM_SRGB: - fmt = basisu::texture_format::cBC7; - break; - } - basisu::gpu_image basis_gpu_image; - basis_gpu_image.init(fmt, desc.width, desc.height); - std::memcpy(basis_gpu_image.get_ptr(), texturedata.data(), std::min(texturedata.size(), (size_t)basis_gpu_image.get_size_in_bytes())); - basis_gpu_image.unpack(basis_image); - } else { assert(desc.format == Format::R8G8B8A8_UNORM || desc.format == Format::R8G8B8A8_UNORM_SRGB); // If you need to save other texture format, implement data conversion for it } - if (basis || ktx2) - { - if (basis_image.get_total_pixels() == 0) - { - basis_image.init(texturedata.data(), desc.width, desc.height, 4); - if (desc.mip_levels > 1) - { - basis_mipmaps.reserve(desc.mip_levels - 1); - for (uint32_t mip = 1; mip < desc.mip_levels; ++mip) - { - basisu::image basis_mip; - const MipDesc& mipdesc = mips[mip]; - basis_mip.init(mipdesc.address, mipdesc.width, mipdesc.height, 4); - basis_mipmaps.push_back(basis_mip); - } - } - } - static bool encoder_initialized = false; - if (!encoder_initialized) - { - encoder_initialized = true; - basisu::basisu_encoder_init(false, false); - } - basisu::basis_compressor_params params; - params.m_source_images.push_back(basis_image); - if (desc.mip_levels > 1) - { - params.m_source_mipmap_images.push_back(basis_mipmaps); - } - if (ktx2) - { - params.m_create_ktx2_file = true; - } - else - { - params.m_create_ktx2_file = false; - } -#if 1 - params.m_compression_level = basisu::BASISU_DEFAULT_COMPRESSION_LEVEL; -#else - params.m_compression_level = basisu::BASISU_MAX_COMPRESSION_LEVEL; -#endif - // Disable CPU mipmap generation: - // instead we provide mipmap data that was downloaded from the GPU with m_source_mipmap_images. - // This is better, because engine specific mipgen options will be retained, such as coverage preserving mipmaps - params.m_mip_gen = false; - params.m_quality_level = basisu::BASISU_QUALITY_MAX; - params.m_multithreading = true; - int num_threads = std::max(1u, std::thread::hardware_concurrency()); - basisu::job_pool jpool(num_threads); - params.m_pJob_pool = &jpool; - basisu::basis_compressor compressor; - if (compressor.init(params)) - { - auto result = compressor.process(); - if (result == basisu::basis_compressor::cECSuccess) - { - if (basis) - { - const auto& basis_file = compressor.get_output_basis_file(); - filedata.resize(basis_file.size()); - std::memcpy(filedata.data(), basis_file.data(), basis_file.size()); - return true; - } - else if (ktx2) - { - const auto& ktx2_file = compressor.get_output_ktx2_file(); - filedata.resize(ktx2_file.size()); - std::memcpy(filedata.data(), ktx2_file.data(), ktx2_file.size()); - return true; - } - } - else - { - wi::backlog::post("basisu::basis_compressor::process() failure!", wi::backlog::LogLevel::Error); - assert(0); - } - } - return false; - } - int write_result = 0; filedata.clear(); diff --git a/WickedEngine/wiResourceManager.cpp b/WickedEngine/wiResourceManager.cpp index 536a79b6e..3492c2ff9 100644 --- a/WickedEngine/wiResourceManager.cpp +++ b/WickedEngine/wiResourceManager.cpp @@ -6,9 +6,7 @@ #include "wiBacklog.h" #include "wiJobSystem.h" -#include "Utility/qoi.h" #include "Utility/stb_image.h" -#include "Utility/basis_universal/transcoder/basisu_transcoder.h" #include "Utility/dds.h" #include @@ -222,15 +220,12 @@ namespace wi FONTSTYLE, }; static const wi::unordered_map types = { - {"BASIS", DataType::IMAGE}, - {"KTX2", DataType::IMAGE}, {"JPG", DataType::IMAGE}, {"JPEG", DataType::IMAGE}, {"PNG", DataType::IMAGE}, {"BMP", DataType::IMAGE}, {"DDS", DataType::IMAGE}, {"TGA", DataType::IMAGE}, - {"QOI", DataType::IMAGE}, {"HDR", DataType::IMAGE}, {"WAV", DataType::SOUND}, {"OGG", DataType::SOUND}, @@ -331,282 +326,7 @@ namespace wi case DataType::IMAGE: { GraphicsDevice* device = wi::graphics::GetDevice(); - if (!ext.compare("KTX2")) - { - flags &= ~Flags::STREAMING; // disable streaming - basist::ktx2_transcoder transcoder; - if (transcoder.init(filedata, (uint32_t)filesize)) - { - TextureDesc desc; - desc.bind_flags = BindFlag::SHADER_RESOURCE; - desc.width = transcoder.get_width(); - desc.height = transcoder.get_height(); - desc.array_size = std::max(desc.array_size, transcoder.get_layers() * transcoder.get_faces()); - desc.mip_levels = transcoder.get_levels(); - desc.misc_flags = ResourceMiscFlag::TYPED_FORMAT_CASTING; - if (transcoder.get_faces() == 6) - { - desc.misc_flags |= ResourceMiscFlag::TEXTURECUBE; - } - - basist::transcoder_texture_format fmt = basist::transcoder_texture_format::cTFRGBA32; - desc.format = Format::R8G8B8A8_UNORM; - - bool import_compressed = has_flag(flags, Flags::IMPORT_BLOCK_COMPRESSED); - if (import_compressed) - { - // BC5 is disabled because it's missing green channel! - //if (has_flag(flags, Flags::IMPORT_NORMALMAP)) - //{ - // fmt = basist::transcoder_texture_format::cTFBC5_RG; - // desc.format = Format::BC5_UNORM; - // desc.swizzle.r = ComponentSwizzle::R; - // desc.swizzle.g = ComponentSwizzle::G; - // desc.swizzle.b = ComponentSwizzle::ONE; - // desc.swizzle.a = ComponentSwizzle::ONE; - //} - //else - { - if (transcoder.get_has_alpha()) - { - fmt = basist::transcoder_texture_format::cTFBC3_RGBA; - desc.format = Format::BC3_UNORM; - } - else - { - fmt = basist::transcoder_texture_format::cTFBC1_RGB; - desc.format = Format::BC1_UNORM; - } - } - } - uint32_t bytes_per_block = basis_get_bytes_per_block_or_pixel(fmt); - - if (transcoder.start_transcoding()) - { - // all subresources will use one allocation for transcoder destination, so compute combined size: - size_t transcoded_data_size = 0; - const uint32_t layers = std::max(1u, transcoder.get_layers()); - const uint32_t faces = transcoder.get_faces(); - const uint32_t levels = transcoder.get_levels(); - for (uint32_t layer = 0; layer < layers; ++layer) - { - for (uint32_t face = 0; face < faces; ++face) - { - for (uint32_t mip = 0; mip < levels; ++mip) - { - basist::ktx2_image_level_info level_info; - if (transcoder.get_image_level_info(level_info, mip, layer, face)) - { - uint32_t pixel_or_block_count = (import_compressed - ? level_info.m_total_blocks - : (level_info.m_orig_width * level_info.m_orig_height)); - transcoded_data_size += bytes_per_block * pixel_or_block_count; - } - } - } - } - wi::vector transcoded_data(transcoded_data_size); - - wi::vector InitData; - size_t transcoded_data_offset = 0; - for (uint32_t layer = 0; layer < layers; ++layer) - { - for (uint32_t face = 0; face < faces; ++face) - { - for (uint32_t mip = 0; mip < levels; ++mip) - { - basist::ktx2_image_level_info level_info; - if (transcoder.get_image_level_info(level_info, mip, layer, face)) - { - void* data_ptr = transcoded_data.data() + transcoded_data_offset; - uint32_t pixel_or_block_count = (import_compressed - ? level_info.m_total_blocks - : (level_info.m_orig_width * level_info.m_orig_height)); - transcoded_data_offset += bytes_per_block * pixel_or_block_count; - if (transcoder.transcode_image_level( - mip, - layer, - face, - data_ptr, - pixel_or_block_count, - fmt - )) - { - SubresourceData subresourceData; - subresourceData.data_ptr = data_ptr; - subresourceData.row_pitch = (import_compressed ? level_info.m_num_blocks_x : level_info.m_orig_width) * bytes_per_block; - subresourceData.slice_pitch = subresourceData.row_pitch * (import_compressed ? level_info.m_num_blocks_y : level_info.m_orig_height); - InitData.push_back(subresourceData); - } - else - { - wi::backlog::post("KTX2 transcoding error while loading image!", wi::backlog::LogLevel::Error); - assert(0); - } - } - else - { - wi::backlog::post("KTX2 transcoding error while loading image level info!", wi::backlog::LogLevel::Error); - assert(0); - } - } - } - } - - if (!InitData.empty()) - { - success = device->CreateTexture(&desc, InitData.data(), &resource->texture); - device->SetName(&resource->texture, name.c_str()); - - Format srgb_format = GetFormatSRGB(desc.format); - if (srgb_format != Format::UNKNOWN && srgb_format != desc.format) - { - resource->srgb_subresource = device->CreateSubresource( - &resource->texture, - SubresourceType::SRV, - 0, -1, - 0, -1, - &srgb_format - ); - } - } - } - transcoder.clear(); - } - } - else if (!ext.compare("BASIS")) - { - flags &= ~Flags::STREAMING; // disable streaming - basist::basisu_transcoder transcoder; - if (transcoder.validate_header(filedata, (uint32_t)filesize)) - { - basist::basisu_file_info fileInfo; - if (transcoder.get_file_info(filedata, (uint32_t)filesize, fileInfo)) - { - uint32_t image_index = 0; - basist::basisu_image_info info; - if (transcoder.get_image_info(filedata, (uint32_t)filesize, info, image_index)) - { - TextureDesc desc; - desc.bind_flags = BindFlag::SHADER_RESOURCE; - desc.width = info.m_width; - desc.height = info.m_height; - desc.mip_levels = info.m_total_levels; - desc.misc_flags = ResourceMiscFlag::TYPED_FORMAT_CASTING; - - basist::transcoder_texture_format fmt = basist::transcoder_texture_format::cTFRGBA32; - desc.format = Format::R8G8B8A8_UNORM; - - bool import_compressed = has_flag(flags, Flags::IMPORT_BLOCK_COMPRESSED); - if (import_compressed) - { - // BC5 is disabled because it's missing green channel! - //if (has_flag(flags, Flags::IMPORT_NORMALMAP)) - //{ - // fmt = basist::transcoder_texture_format::cTFBC5_RG; - // desc.format = Format::BC5_UNORM; - // desc.swizzle.r = ComponentSwizzle::R; - // desc.swizzle.g = ComponentSwizzle::G; - // desc.swizzle.b = ComponentSwizzle::ONE; - // desc.swizzle.a = ComponentSwizzle::ONE; - //} - //else - { - if (info.m_alpha_flag) - { - fmt = basist::transcoder_texture_format::cTFBC3_RGBA; - desc.format = Format::BC3_UNORM; - } - else - { - fmt = basist::transcoder_texture_format::cTFBC1_RGB; - desc.format = Format::BC1_UNORM; - } - } - } - uint32_t bytes_per_block = basis_get_bytes_per_block_or_pixel(fmt); - - if (transcoder.start_transcoding(filedata, (uint32_t)filesize)) - { - // all subresources will use one allocation for transcoder destination, so compute combined size: - size_t transcoded_data_size = 0; - for (uint32_t mip = 0; mip < desc.mip_levels; ++mip) - { - basist::basisu_image_level_info level_info; - if (transcoder.get_image_level_info(filedata, (uint32_t)filesize, level_info, image_index, mip)) - { - uint32_t pixel_or_block_count = (import_compressed - ? level_info.m_total_blocks - : (level_info.m_orig_width * level_info.m_orig_height)); - transcoded_data_size += bytes_per_block * pixel_or_block_count; - } - } - wi::vector transcoded_data(transcoded_data_size); - - wi::vector InitData; - size_t transcoded_data_offset = 0; - for (uint32_t mip = 0; mip < desc.mip_levels; ++mip) - { - basist::basisu_image_level_info level_info; - if (transcoder.get_image_level_info(filedata, (uint32_t)filesize, level_info, 0, mip)) - { - void* data_ptr = transcoded_data.data() + transcoded_data_offset; - uint32_t pixel_or_block_count = (import_compressed - ? level_info.m_total_blocks - : (level_info.m_orig_width * level_info.m_orig_height)); - transcoded_data_offset += pixel_or_block_count * bytes_per_block; - if (transcoder.transcode_image_level( - filedata, - (uint32_t)filesize, - image_index, - mip, - data_ptr, - pixel_or_block_count, - fmt - )) - { - SubresourceData subresourceData; - subresourceData.data_ptr = data_ptr; - subresourceData.row_pitch = (import_compressed ? level_info.m_num_blocks_x : level_info.m_orig_width) * bytes_per_block; - subresourceData.slice_pitch = subresourceData.row_pitch * (import_compressed ? level_info.m_num_blocks_y : level_info.m_orig_height); - InitData.push_back(subresourceData); - } - else - { - wi::backlog::post("BASIS transcoding error while loading image!", wi::backlog::LogLevel::Error); - assert(0); - } - } - else - { - wi::backlog::post("BASIS transcoding error while loading image level info!", wi::backlog::LogLevel::Error); - assert(0); - } - } - - if (!InitData.empty()) - { - success = device->CreateTexture(&desc, InitData.data(), &resource->texture); - device->SetName(&resource->texture, name.c_str()); - - Format srgb_format = GetFormatSRGB(desc.format); - if (srgb_format != Format::UNKNOWN && srgb_format != desc.format) - { - resource->srgb_subresource = device->CreateSubresource( - &resource->texture, - SubresourceType::SRV, - 0, -1, - 0, -1, - &srgb_format - ); - } - } - } - } - } - } - } - else if (!ext.compare("DDS")) + if (!ext.compare("DDS")) { dds::Header header = dds::read_header(filedata, filesize); if (header.is_valid()) @@ -899,7 +619,7 @@ namespace wi } else { - // qoi, png, tga, jpg, etc. loader: + // png, tga, jpg, etc. loader: flags &= ~Flags::STREAMING; // disable streaming int height = 0, width = 0, channels = 0; bool is_16bit = false; @@ -908,109 +628,97 @@ namespace wi Swizzle swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::A }; void* rgba; - if (!ext.compare("QOI")) + if (!has_flag(flags, Flags::IMPORT_COLORGRADINGLUT) && stbi_is_16_bit_from_memory(filedata, (int)filesize)) { - qoi_desc desc = {}; - rgba = qoi_decode(filedata, (int)filesize, &desc, 4); - // redefine width, height to avoid further conditionals - height = desc.height; - width = desc.width; - channels = 4; + is_16bit = true; + rgba = stbi_load_16_from_memory(filedata, (int)filesize, &width, &height, &channels, 0); + switch (channels) + { + case 1: + format = Format::R16_UNORM; + bc_format = Format::BC4_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::ONE }; + break; + case 2: + format = Format::R16G16_UNORM; + bc_format = Format::BC5_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::G }; + break; + case 3: + { + // Graphics API doesn't support 3 channel formats, so need to expand to RGBA: + struct Color3 + { + uint16_t r, g, b; + }; + const Color3* color3 = (const Color3*)rgba; + wi::Color16* color4 = (wi::Color16*)malloc(width * height * sizeof(wi::Color16)); + for (int i = 0; i < width * height; ++i) + { + color4[i].setR(color3[i].r); + color4[i].setG(color3[i].g); + color4[i].setB(color3[i].b); + color4[i].setA(65535); + } + free(rgba); + rgba = color4; + format = Format::R16G16B16A16_UNORM; + bc_format = Format::BC1_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::ONE }; + } + break; + case 4: + default: + format = Format::R16G16B16A16_UNORM; + bc_format = Format::BC3_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::A }; + break; + } } else { - if (!has_flag(flags, Flags::IMPORT_COLORGRADINGLUT) && stbi_is_16_bit_from_memory(filedata, (int)filesize)) + rgba = stbi_load_from_memory(filedata, (int)filesize, &width, &height, &channels, 0); + switch (channels) { - is_16bit = true; - rgba = stbi_load_16_from_memory(filedata, (int)filesize, &width, &height, &channels, 0); - switch (channels) - { - case 1: - format = Format::R16_UNORM; - bc_format = Format::BC4_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::ONE }; - break; - case 2: - format = Format::R16G16_UNORM; - bc_format = Format::BC5_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::G }; - break; - case 3: - { - // Graphics API doesn't support 3 channel formats, so need to expand to RGBA: - struct Color3 - { - uint16_t r, g, b; - }; - const Color3* color3 = (const Color3*)rgba; - wi::Color16* color4 = (wi::Color16*)malloc(width * height * sizeof(wi::Color16)); - for (int i = 0; i < width * height; ++i) - { - color4[i].setR(color3[i].r); - color4[i].setG(color3[i].g); - color4[i].setB(color3[i].b); - color4[i].setA(65535); - } - free(rgba); - rgba = color4; - format = Format::R16G16B16A16_UNORM; - bc_format = Format::BC1_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::ONE }; - } + case 1: + format = Format::R8_UNORM; + bc_format = Format::BC4_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::ONE }; break; - case 4: - default: - format = Format::R16G16B16A16_UNORM; - bc_format = Format::BC3_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::A }; - break; + case 2: + format = Format::R8G8_UNORM; + bc_format = Format::BC5_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::G }; + break; + case 3: + { + // Graphics API doesn't support 3 channel formats, so need to expand to RGBA: + struct Color3 + { + uint8_t r, g, b; + }; + const Color3* color3 = (const Color3*)rgba; + wi::Color* color4 = (wi::Color*)malloc(width * height * sizeof(wi::Color)); + for (int i = 0; i < width * height; ++i) + { + color4[i].setR(color3[i].r); + color4[i].setG(color3[i].g); + color4[i].setB(color3[i].b); + color4[i].setA(255); } + free(rgba); + rgba = color4; + format = Format::R8G8B8A8_UNORM; + bc_format = Format::BC1_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::ONE }; } - else - { - rgba = stbi_load_from_memory(filedata, (int)filesize, &width, &height, &channels, 0); - switch (channels) - { - case 1: - format = Format::R8_UNORM; - bc_format = Format::BC4_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::ONE }; - break; - case 2: - format = Format::R8G8_UNORM; - bc_format = Format::BC5_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::R, ComponentSwizzle::G }; - break; - case 3: - { - // Graphics API doesn't support 3 channel formats, so need to expand to RGBA: - struct Color3 - { - uint8_t r, g, b; - }; - const Color3* color3 = (const Color3*)rgba; - wi::Color* color4 = (wi::Color*)malloc(width * height * sizeof(wi::Color)); - for (int i = 0; i < width * height; ++i) - { - color4[i].setR(color3[i].r); - color4[i].setG(color3[i].g); - color4[i].setB(color3[i].b); - color4[i].setA(255); - } - free(rgba); - rgba = color4; - format = Format::R8G8B8A8_UNORM; - bc_format = Format::BC1_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::ONE }; - } + break; + case 4: + default: + format = Format::R8G8B8A8_UNORM; + bc_format = Format::BC3_UNORM; + swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::A }; break; - case 4: - default: - format = Format::R8G8B8A8_UNORM; - bc_format = Format::BC3_UNORM; - swizzle = { ComponentSwizzle::R, ComponentSwizzle::G, ComponentSwizzle::B, ComponentSwizzle::A }; - break; - } } } @@ -1138,7 +846,7 @@ namespace wi } } } - free(rgba); + stbi_image_free(rgba); } } break; @@ -1202,13 +910,6 @@ namespace wi std::weak_ptr& weak_resource = resources[name]; std::shared_ptr resource = weak_resource.lock(); - static bool basis_init = false; // within lock! - if (!basis_init) - { - basis_init = true; - basist::basisu_transcoder_init(); - } - uint64_t timestamp = 0; if(!container_filename.empty()) { diff --git a/features.txt b/features.txt index ae12b76f8..59a99cc5f 100644 --- a/features.txt +++ b/features.txt @@ -103,7 +103,6 @@ KHR_materials_specular KHR_materials_anisotropy KHR_materials_ior KHR_materials_emissive_strength -KHR_texture_basisu KHR_lights_punctual EXT_lights_image_based diff --git a/third_party_software.txt b/third_party_software.txt index e0da02439..78ad87f62 100644 --- a/third_party_software.txt +++ b/third_party_software.txt @@ -275,7 +275,6 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - ############################################################################################################################### Mesh Optimizer: https://github.com/zeux/meshoptimizer @@ -329,22 +328,6 @@ THE SOFTWARE. ############################################################################################################################### -Basis Universal: https://github.com/BinomialLLC/basis_universal - -Licensed under the Apache License, Version 2.0 (the "License"); -you may not use this file except in compliance with the License. -You may obtain a copy of the License at - - http://www.apache.org/licenses/LICENSE-2.0 - -Unless required by applicable law or agreed to in writing, software -distributed under the License is distributed on an "AS IS" BASIS, -WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -See the License for the specific language governing permissions and -limitations under the License. - -############################################################################################################################### - FNA-XNA/FAudio 21.09: https://github.com/FNA-XNA/FAudio /* FAudio - XAudio Reimplementation for FNA