mirror of
https://github.com/GoogleChromeLabs/squoosh.git
synced 2025-11-16 10:39:53 +00:00
7346511fa1
* wip * doh, whitespace * Updating emscripten, restoring export name * Updating oxipng * Build wasm * Fix oxipng; upgrade Rust * More v2-codec integration * AVIF now working * Non-working JXL * Build hqx with Rust 1.40; refactor build-rust*.sh * Set web target * wp2 wip * wp2 decode options * Better logo height when loading the logo into squoosh * Build oxi * JAKE IS AN IDIOT * wip oxipng * Fixing case sensitive imports * adding log * another log * Abort tasks when compress component removed * Adding progressive option to JXL * Fix bug going to & from original image * Exposing epf in jxl * logs * Bypass initial CSS plugin * Revert "logs" * Adding root * Fix for finding TSC on Windows * Use spawn again * Converting to module paths * Remove spawnP * silly * oops * logs * Fixing glob paths in CSS plugin * Path normalising * Normalise paths for CSS plugin * Normalise again * Use correct func * Adding lossless mode and near lossless (but hidden in UI) * Removing useless comments * Some logging * Update JXL to v0.1. (#846) * Rebuild JXL * Adding slight loss option Co-authored-by: Ingvar Stepanyan <rreverser@google.com> Co-authored-by: Luca Versari <veluca93@gmail.com>
73 lines
2.9 KiB
C++
73 lines
2.9 KiB
C++
#include <emscripten/bind.h>
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#include <emscripten/val.h>
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#include <jxl/decode.h>
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#include "lib/jxl/color_encoding_internal.h"
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#include "skcms.h"
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using namespace emscripten;
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thread_local const val Uint8ClampedArray = val::global("Uint8ClampedArray");
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thread_local const val ImageData = val::global("ImageData");
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// R, G, B, A
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#define COMPONENTS_PER_PIXEL 4
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#define EXPECT_TRUE(a) \
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if (!(a)) { \
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return val::null(); \
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}
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#define EXPECT_EQ(a, b) EXPECT_TRUE((a) == (b));
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val decode(std::string data) {
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std::unique_ptr<JxlDecoder,
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std::integral_constant<decltype(&JxlDecoderDestroy), JxlDecoderDestroy>>
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dec(JxlDecoderCreate(nullptr));
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EXPECT_EQ(JXL_DEC_SUCCESS,
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JxlDecoderSubscribeEvents(
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dec.get(), JXL_DEC_BASIC_INFO | JXL_DEC_COLOR_ENCODING | JXL_DEC_FULL_IMAGE));
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auto next_in = (const uint8_t*)data.c_str();
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auto avail_in = data.size();
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EXPECT_EQ(JXL_DEC_BASIC_INFO, JxlDecoderProcessInput(dec.get(), &next_in, &avail_in));
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JxlBasicInfo info;
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EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderGetBasicInfo(dec.get(), &info));
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size_t pixel_count = info.xsize * info.ysize;
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size_t component_count = pixel_count * COMPONENTS_PER_PIXEL;
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EXPECT_EQ(JXL_DEC_COLOR_ENCODING, JxlDecoderProcessInput(dec.get(), &next_in, &avail_in));
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static const JxlPixelFormat format = {COMPONENTS_PER_PIXEL, JXL_TYPE_FLOAT, JXL_LITTLE_ENDIAN, 0};
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size_t icc_size;
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EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderGetICCProfileSize(dec.get(), &format,
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JXL_COLOR_PROFILE_TARGET_DATA, &icc_size));
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std::vector<uint8_t> icc_profile(icc_size);
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EXPECT_EQ(JXL_DEC_SUCCESS,
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JxlDecoderGetColorAsICCProfile(dec.get(), &format, JXL_COLOR_PROFILE_TARGET_DATA,
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icc_profile.data(), icc_profile.size()));
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auto float_pixels = std::make_unique<float[]>(component_count);
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EXPECT_EQ(JXL_DEC_SUCCESS, JxlDecoderSetImageOutBuffer(dec.get(), &format, float_pixels.get(),
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component_count * sizeof(float)));
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EXPECT_EQ(JXL_DEC_FULL_IMAGE, JxlDecoderProcessInput(dec.get(), &next_in, &avail_in));
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auto byte_pixels = std::make_unique<uint8_t[]>(component_count);
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// Convert to sRGB.
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skcms_ICCProfile jxl_profile;
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EXPECT_TRUE(skcms_Parse(icc_profile.data(), icc_profile.size(), &jxl_profile));
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EXPECT_TRUE(skcms_Transform(
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float_pixels.get(), skcms_PixelFormat_RGBA_ffff,
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info.alpha_premultiplied ? skcms_AlphaFormat_PremulAsEncoded : skcms_AlphaFormat_Unpremul,
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&jxl_profile, byte_pixels.get(), skcms_PixelFormat_RGBA_8888, skcms_AlphaFormat_Unpremul,
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skcms_sRGB_profile(), pixel_count));
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return ImageData.new_(
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Uint8ClampedArray.new_(typed_memory_view(component_count, byte_pixels.get())), info.xsize,
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info.ysize);
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}
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EMSCRIPTEN_BINDINGS(my_module) {
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function("decode", &decode);
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}
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