mirror of
https://github.com/bkaradzic/bimg.git
synced 2026-02-17 20:52:38 +01:00
692 lines
17 KiB
C++
692 lines
17 KiB
C++
/*
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* Copyright 2011-2017 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "bimg_p.h"
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-function")
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BX_PRAGMA_DIAGNOSTIC_PUSH()
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wtype-limits")
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-parameter")
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wunused-value")
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG("-Wdeprecated-declarations")
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BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4100) // error C4100: '' : unreferenced formal parameter
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BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4505) // warning C4505: 'tinyexr::miniz::def_realloc_func': unreferenced local function has been removed
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#if BX_PLATFORM_EMSCRIPTEN
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# include <compat/ctype.h>
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#endif // BX_PLATFORM_EMSCRIPTEN
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#define MINIZ_NO_ARCHIVE_APIS
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#define MINIZ_NO_STDIO
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#define TINYEXR_IMPLEMENTATION
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#include <tinyexr/tinyexr.h>
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BX_PRAGMA_DIAGNOSTIC_POP()
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BX_PRAGMA_DIAGNOSTIC_PUSH();
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BX_PRAGMA_DIAGNOSTIC_IGNORED_MSVC(4127) // warning C4127: conditional expression is constant
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#define LODEPNG_NO_COMPILE_ENCODER
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#define LODEPNG_NO_COMPILE_DISK
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#define LODEPNG_NO_COMPILE_ANCILLARY_CHUNKS
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#define LODEPNG_NO_COMPILE_ALLOCATORS
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#define LODEPNG_NO_COMPILE_CPP
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#include <lodepng/lodepng.cpp>
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BX_PRAGMA_DIAGNOSTIC_POP();
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void* lodepng_malloc(size_t _size)
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{
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return ::malloc(_size);
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}
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void* lodepng_realloc(void* _ptr, size_t _size)
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{
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return ::realloc(_ptr, _size);
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}
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void lodepng_free(void* _ptr)
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{
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::free(_ptr);
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}
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BX_PRAGMA_DIAGNOSTIC_PUSH();
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wmissing-field-initializers");
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wshadow");
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BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wint-to-pointer-cast")
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BX_PRAGMA_DIAGNOSTIC_IGNORED_GCC("-Warray-bounds");
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#if BX_COMPILER_GCC >= 60000
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BX_PRAGMA_DIAGNOSTIC_IGNORED_GCC("-Wmisleading-indentation");
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BX_PRAGMA_DIAGNOSTIC_IGNORED_GCC("-Wshift-negative-value");
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#elif BX_COMPILER_GCC >= 70000
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BX_PRAGMA_DIAGNOSTIC_IGNORED_GCC("-Wimplicit-fallthrough");
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#endif // BX_COMPILER_GCC >= 60000_
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#define STBI_MALLOC(_size) lodepng_malloc(_size)
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#define STBI_REALLOC(_ptr, _size) lodepng_realloc(_ptr, _size)
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#define STBI_FREE(_ptr) lodepng_free(_ptr)
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#define STB_IMAGE_IMPLEMENTATION
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#include <stb/stb_image.h>
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BX_PRAGMA_DIAGNOSTIC_POP();
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namespace bimg
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{
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static ImageContainer* imageParseLodePng(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, bx::Error* _err)
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{
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BX_ERROR_SCOPE(_err);
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static uint8_t pngMagic[] = { 0x89, 0x50, 0x4E, 0x47, 0x0d, 0x0a };
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if (0 != bx::memCmp(_data, pngMagic, sizeof(pngMagic) ) )
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{
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return NULL;
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}
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ImageContainer* output = NULL;
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bimg::TextureFormat::Enum format = bimg::TextureFormat::RGBA8;
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uint32_t width = 0;
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uint32_t height = 0;
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unsigned error;
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LodePNGState state;
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lodepng_state_init(&state);
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state.decoder.color_convert = 0;
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uint8_t* data = NULL;
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error = lodepng_decode(&data, &width, &height, &state, (uint8_t*)_data, _size);
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if (0 != error)
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{
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_err->setError(BIMG_ERROR, lodepng_error_text(error) );
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}
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else
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{
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bool palette = false;
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bool supported = false;
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switch (state.info_raw.bitdepth)
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{
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case 1:
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format = bimg::TextureFormat::R1;
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palette = false;
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supported = true;
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break;
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case 8:
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switch (state.info_raw.colortype)
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{
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case LCT_GREY:
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format = bimg::TextureFormat::R8;
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supported = true;
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break;
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case LCT_GREY_ALPHA:
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format = bimg::TextureFormat::RG8;
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supported = true;
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break;
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case LCT_RGB:
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format = bimg::TextureFormat::RGB8;
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supported = true;
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break;
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case LCT_RGBA:
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format = bimg::TextureFormat::RGBA8;
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supported = true;
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break;
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case LCT_PALETTE:
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format = bimg::TextureFormat::RGBA8;
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palette = true;
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supported = true;
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break;
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}
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break;
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case 16:
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switch (state.info_raw.colortype)
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{
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case LCT_GREY:
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for (uint32_t ii = 0, num = width*height; ii < num; ++ii)
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{
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uint16_t* rgba = (uint16_t*)data + ii;
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rgba[0] = bx::toHostEndian(rgba[0], false);
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}
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format = bimg::TextureFormat::R16;
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supported = true;
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break;
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case LCT_GREY_ALPHA:
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for (uint32_t ii = 0, num = width*height; ii < num; ++ii)
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{
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uint16_t* rgba = (uint16_t*)data + ii*2;
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rgba[0] = bx::toHostEndian(rgba[0], false);
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rgba[1] = bx::toHostEndian(rgba[1], false);
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}
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format = bimg::TextureFormat::RG16;
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supported = true;
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break;
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case LCT_RGB:
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for (uint32_t ii = 0, num = width*height; ii < num; ++ii)
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{
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uint16_t* rgba = (uint16_t*)data + ii*3;
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rgba[0] = bx::toHostEndian(rgba[0], false);
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rgba[1] = bx::toHostEndian(rgba[1], false);
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rgba[2] = bx::toHostEndian(rgba[2], false);
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}
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format = bimg::TextureFormat::RGBA16;
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supported = true;
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break;
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case LCT_RGBA:
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for (uint32_t ii = 0, num = width*height; ii < num; ++ii)
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{
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uint16_t* rgba = (uint16_t*)data + ii*4;
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rgba[0] = bx::toHostEndian(rgba[0], false);
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rgba[1] = bx::toHostEndian(rgba[1], false);
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rgba[2] = bx::toHostEndian(rgba[2], false);
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rgba[3] = bx::toHostEndian(rgba[3], false);
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}
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format = bimg::TextureFormat::RGBA16;
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supported = true;
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break;
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case LCT_PALETTE:
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break;
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}
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break;
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default:
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break;
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}
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if (supported)
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{
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const uint8_t* copyData = data;
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TextureFormat::Enum dstFormat = format;
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if (1 == state.info_raw.bitdepth)
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{
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dstFormat = bimg::TextureFormat::R8;
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copyData = NULL;
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}
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else if (16 == state.info_raw.bitdepth
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&& LCT_RGB == state.info_raw.colortype)
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{
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dstFormat = bimg::TextureFormat::RGBA16;
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copyData = NULL;
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}
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else if (palette)
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{
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copyData = NULL;
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}
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output = imageAlloc(_allocator
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, dstFormat
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, uint16_t(width)
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, uint16_t(height)
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, 0
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, 1
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, false
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, false
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, copyData
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);
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if (1 == state.info_raw.bitdepth)
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{
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for (uint32_t ii = 0, num = width*height/8; ii < num; ++ii)
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{
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uint8_t value = data[ii];
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uint8_t* dst = (uint8_t*)output->m_data + ii * 8;
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dst[0] = value & 0x01 ? 255 : 0;
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dst[1] = value & 0x02 ? 255 : 0;
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dst[2] = value & 0x04 ? 255 : 0;
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dst[3] = value & 0x08 ? 255 : 0;
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dst[4] = value & 0x10 ? 255 : 0;
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dst[5] = value & 0x20 ? 255 : 0;
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dst[6] = value & 0x40 ? 255 : 0;
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dst[7] = value & 0x80 ? 255 : 0;
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}
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}
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else if (16 == state.info_raw.bitdepth
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&& LCT_RGB == state.info_raw.colortype)
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{
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for (uint32_t ii = 0, num = width*height; ii < num; ++ii)
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{
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const uint16_t* src = (uint16_t*)data + ii*3;
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uint16_t* dst = (uint16_t*)output->m_data + ii*4;
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dst[0] = src[0];
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dst[1] = src[1];
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dst[2] = src[2];
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dst[3] = UINT16_MAX;
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}
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}
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else if (palette)
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{
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for (uint32_t ii = 0, num = width*height; ii < num; ++ii)
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{
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bx::memCopy( (uint8_t*)output->m_data + ii*4, state.info_raw.palette + data[ii]*4, 4);
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}
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}
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}
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else
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{
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BX_ERROR_SET(_err, BIMG_ERROR, "PNG: Unsupported format.");
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}
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}
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lodepng_state_cleanup(&state);
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lodepng_free(data);
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return output;
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}
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static ImageContainer* imageParseTinyExr(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, bx::Error* _err)
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{
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BX_ERROR_SCOPE(_err);
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EXRVersion exrVersion;
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int result = ParseEXRVersionFromMemory(&exrVersion, (uint8_t*)_data, _size);
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if (TINYEXR_SUCCESS != result)
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{
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return NULL;
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}
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bimg::TextureFormat::Enum format = bimg::TextureFormat::RGBA8;
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uint32_t width = 0;
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uint32_t height = 0;
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uint8_t* data = NULL;
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const char* err = NULL;
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EXRHeader exrHeader;
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result = ParseEXRHeaderFromMemory(&exrHeader, &exrVersion, (uint8_t*)_data, _size, &err);
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if (TINYEXR_SUCCESS == result)
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{
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EXRImage exrImage;
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InitEXRImage(&exrImage);
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result = LoadEXRImageFromMemory(&exrImage, &exrHeader, (uint8_t*)_data, _size, &err);
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if (TINYEXR_SUCCESS == result)
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{
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uint8_t idxR = UINT8_MAX;
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uint8_t idxG = UINT8_MAX;
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uint8_t idxB = UINT8_MAX;
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uint8_t idxA = UINT8_MAX;
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for (uint8_t ii = 0, num = uint8_t(exrHeader.num_channels); ii < num; ++ii)
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{
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const EXRChannelInfo& channel = exrHeader.channels[ii];
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if (UINT8_MAX == idxR
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&& 0 == bx::strCmp(channel.name, "R") )
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{
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idxR = ii;
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}
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else if (UINT8_MAX == idxG
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&& 0 == bx::strCmp(channel.name, "G") )
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{
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idxG = ii;
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}
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else if (UINT8_MAX == idxB
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&& 0 == bx::strCmp(channel.name, "B") )
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{
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idxB = ii;
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}
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else if (UINT8_MAX == idxA
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&& 0 == bx::strCmp(channel.name, "A") )
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{
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idxA = ii;
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}
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}
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if (UINT8_MAX != idxR)
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{
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const bool asFloat = exrHeader.pixel_types[idxR] == TINYEXR_PIXELTYPE_FLOAT;
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uint32_t srcBpp = 32;
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uint32_t dstBpp = asFloat ? 32 : 16;
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format = asFloat ? TextureFormat::R32F : TextureFormat::R16F;
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uint32_t stepR = 1;
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uint32_t stepG = 0;
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uint32_t stepB = 0;
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uint32_t stepA = 0;
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if (UINT8_MAX != idxG)
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{
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srcBpp += 32;
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dstBpp = asFloat ? 64 : 32;
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format = asFloat ? TextureFormat::RG32F : TextureFormat::RG16F;
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stepG = 1;
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}
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if (UINT8_MAX != idxB)
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{
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srcBpp += 32;
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dstBpp = asFloat ? 128 : 64;
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format = asFloat ? TextureFormat::RGBA32F : TextureFormat::RGBA16F;
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stepB = 1;
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}
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if (UINT8_MAX != idxA)
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{
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srcBpp += 32;
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dstBpp = asFloat ? 128 : 64;
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format = asFloat ? TextureFormat::RGBA32F : TextureFormat::RGBA16F;
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stepA = 1;
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}
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data = (uint8_t*)BX_ALLOC(_allocator, exrImage.width * exrImage.height * dstBpp/8);
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width = exrImage.width;
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height = exrImage.height;
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if (asFloat)
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{
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const float zero = 0.0f;
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const float* srcR = UINT8_MAX == idxR ? &zero : (const float*)(exrImage.images)[idxR];
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const float* srcG = UINT8_MAX == idxG ? &zero : (const float*)(exrImage.images)[idxG];
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const float* srcB = UINT8_MAX == idxB ? &zero : (const float*)(exrImage.images)[idxB];
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const float* srcA = UINT8_MAX == idxA ? &zero : (const float*)(exrImage.images)[idxA];
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const uint32_t bytesPerPixel = dstBpp/8;
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for (uint32_t ii = 0, num = exrImage.width * exrImage.height; ii < num; ++ii)
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{
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float rgba[4] =
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{
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*srcR,
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*srcG,
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*srcB,
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*srcA,
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};
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bx::memCopy(&data[ii * bytesPerPixel], rgba, bytesPerPixel);
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srcR += stepR;
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srcG += stepG;
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srcB += stepB;
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srcA += stepA;
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}
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}
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else
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{
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const uint16_t zero = 0;
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const uint16_t* srcR = UINT8_MAX == idxR ? &zero : (const uint16_t*)(exrImage.images)[idxR];
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const uint16_t* srcG = UINT8_MAX == idxG ? &zero : (const uint16_t*)(exrImage.images)[idxG];
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const uint16_t* srcB = UINT8_MAX == idxB ? &zero : (const uint16_t*)(exrImage.images)[idxB];
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const uint16_t* srcA = UINT8_MAX == idxA ? &zero : (const uint16_t*)(exrImage.images)[idxA];
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const uint32_t bytesPerPixel = dstBpp/8;
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for (uint32_t ii = 0, num = exrImage.width * exrImage.height; ii < num; ++ii)
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{
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uint16_t rgba[4] =
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{
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*srcR,
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*srcG,
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*srcB,
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*srcA,
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};
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bx::memCopy(&data[ii * bytesPerPixel], rgba, bytesPerPixel);
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srcR += stepR;
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srcG += stepG;
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srcB += stepB;
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srcA += stepA;
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}
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}
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}
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else
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{
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BX_ERROR_SET(_err, BIMG_ERROR, "EXR: Couldn't find R channel.");
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}
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FreeEXRImage(&exrImage);
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}
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else
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{
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BX_ERROR_SET(_err, BIMG_ERROR, "EXR: Failed to parse image.");
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}
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FreeEXRHeader(&exrHeader);
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}
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else
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{
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BX_ERROR_SET(_err, BIMG_ERROR, "EXR: Failed to parse header.");
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}
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ImageContainer* output = NULL;
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if (NULL != data)
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{
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output = imageAlloc(_allocator
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, format
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, uint16_t(width)
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, uint16_t(height)
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, 0
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, 1
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, false
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, false
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, data
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);
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BX_FREE(_allocator, data);
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}
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return output;
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}
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static ImageContainer* imageParseStbImage(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, bx::Error* _err)
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{
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BX_ERROR_SCOPE(_err);
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const int isHdr = stbi_is_hdr_from_memory( (const uint8_t*)_data, (int)_size);
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void* data;
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uint32_t width = 0;
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uint32_t height = 0;
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int comp = 0;
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if (isHdr)
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{
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data = stbi_loadf_from_memory( (const uint8_t*)_data, (int)_size, (int*)&width, (int*)&height, &comp, 4);
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}
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else
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{
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data = stbi_load_from_memory ( (const uint8_t*)_data, (int)_size, (int*)&width, (int*)&height, &comp, 0);
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}
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if (NULL == data)
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{
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|
return NULL;
|
|
}
|
|
|
|
bimg::TextureFormat::Enum format = bimg::TextureFormat::RGBA8;
|
|
|
|
if (isHdr)
|
|
{
|
|
format = bimg::TextureFormat::RGBA32F;
|
|
}
|
|
else
|
|
{
|
|
switch (comp)
|
|
{
|
|
case 1: format = bimg::TextureFormat::R8; break;
|
|
case 2: format = bimg::TextureFormat::RG8; break;
|
|
case 3: format = bimg::TextureFormat::RGB8; break;
|
|
default: break;
|
|
}
|
|
}
|
|
|
|
ImageContainer* output = imageAlloc(_allocator
|
|
, format
|
|
, uint16_t(width)
|
|
, uint16_t(height)
|
|
, 0
|
|
, 1
|
|
, false
|
|
, false
|
|
, data
|
|
);
|
|
stbi_image_free(data);
|
|
|
|
return output;
|
|
}
|
|
|
|
static ImageContainer* imageParseJpeg(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, bx::Error* _err)
|
|
{
|
|
bx::MemoryReader reader(_data, _size);
|
|
|
|
bx::Error err;
|
|
|
|
uint16_t magic = 0;
|
|
bx::readHE(&reader, magic, false, &err);
|
|
|
|
if (!err.isOk()
|
|
|| 0xffd8 != magic)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
Orientation::Enum orientation = Orientation::R0;
|
|
|
|
while (err.isOk() )
|
|
{
|
|
bx::readHE(&reader, magic, false, &err);
|
|
|
|
uint16_t size;
|
|
bx::readHE(&reader, size, false, &err);
|
|
|
|
if (!err.isOk() )
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
if (0xffe1 != magic)
|
|
{
|
|
bx::seek(&reader, size-2);
|
|
continue;
|
|
}
|
|
|
|
char exif00[6];
|
|
bx::read(&reader, exif00, 6, &err);
|
|
|
|
if (0 == bx::memCmp(exif00, "Exif\0\0", 6) )
|
|
{
|
|
uint16_t iimm = 0;
|
|
bx::read(&reader, iimm, &err);
|
|
|
|
const bool littleEndian = iimm == 0x4949; //II - Intel - little endian
|
|
if (!err.isOk()
|
|
&& !littleEndian
|
|
&& iimm != 0x4d4d) // MM - Motorola - big endian
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
bx::readHE(&reader, magic, littleEndian, &err);
|
|
if (!err.isOk()
|
|
|| 0x2a != magic)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
uint32_t ifd0;
|
|
bx::readHE(&reader, ifd0, littleEndian, &err);
|
|
|
|
if (!err.isOk()
|
|
|| 8 > ifd0)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
bx::seek(&reader, ifd0-8);
|
|
|
|
uint16_t numEntries;
|
|
bx::readHE(&reader, numEntries, littleEndian, &err);
|
|
|
|
for (uint32_t ii = 0; err.isOk() && ii < numEntries; ++ii)
|
|
{
|
|
// https://sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html
|
|
uint16_t tag;
|
|
bx::readHE(&reader, tag, littleEndian, &err);
|
|
|
|
uint16_t format;
|
|
bx::readHE(&reader, format, littleEndian, &err);
|
|
|
|
uint32_t length;
|
|
bx::readHE(&reader, length, littleEndian, &err);
|
|
|
|
uint32_t data;
|
|
bx::readHE(&reader, data, littleEndian, &err);
|
|
|
|
switch (tag)
|
|
{
|
|
case 0x112: // orientation
|
|
if (3 == format)
|
|
{
|
|
bx::seek(&reader, -4);
|
|
|
|
uint16_t u16;
|
|
bx::readHE(&reader, u16, littleEndian, &err);
|
|
|
|
uint16_t pad;
|
|
bx::read(&reader, pad, &err);
|
|
|
|
switch (u16)
|
|
{
|
|
default:
|
|
case 1: orientation = Orientation::R0; break; // Horizontal (normal)
|
|
case 2: orientation = Orientation::HFlip; break; // Mirror horizontal
|
|
case 3: orientation = Orientation::R180; break; // Rotate 180
|
|
case 4: orientation = Orientation::VFlip; break; // Mirror vertical
|
|
case 5: orientation = Orientation::HFlipR270; break; // Mirror horizontal and rotate 270 CW
|
|
case 6: orientation = Orientation::R90; break; // Rotate 90 CW
|
|
case 7: orientation = Orientation::HFlipR90; break; // Mirror horizontal and rotate 90 CW
|
|
case 8: orientation = Orientation::R270; break; // Rotate 270 CW
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
ImageContainer* image = imageParseStbImage(_allocator, _data, _size, _err);
|
|
if (NULL != image)
|
|
{
|
|
image->m_orientation = orientation;
|
|
}
|
|
|
|
return image;
|
|
}
|
|
|
|
ImageContainer* imageParse(bx::AllocatorI* _allocator, const void* _data, uint32_t _size, TextureFormat::Enum _dstFormat, bx::Error* _err)
|
|
{
|
|
BX_ERROR_SCOPE(_err);
|
|
|
|
ImageContainer* input = imageParseDds (_allocator, _data, _size, _err) ;
|
|
input = NULL == input ? imageParseKtx (_allocator, _data, _size, _err) : input;
|
|
input = NULL == input ? imageParsePvr3 (_allocator, _data, _size, _err) : input;
|
|
input = NULL == input ? imageParseGnf (_allocator, _data, _size, _err) : input;
|
|
input = NULL == input ? imageParseLodePng (_allocator, _data, _size, _err) : input;
|
|
input = NULL == input ? imageParseTinyExr (_allocator, _data, _size, _err) : input;
|
|
input = NULL == input ? imageParseJpeg (_allocator, _data, _size, _err) : input;
|
|
input = NULL == input ? imageParseStbImage(_allocator, _data, _size, _err) : input;
|
|
|
|
if (NULL == input)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
_dstFormat = TextureFormat::Count == _dstFormat
|
|
? input->m_format
|
|
: _dstFormat
|
|
;
|
|
|
|
if (_dstFormat == input->m_format)
|
|
{
|
|
return input;
|
|
}
|
|
|
|
ImageContainer* output = imageConvert(_allocator, _dstFormat, *input);
|
|
imageFree(input);
|
|
|
|
return output;
|
|
}
|
|
|
|
} // namespace bimg
|