mirror of
https://github.com/LadybirdBrowser/ladybird.git
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356 lines
15 KiB
C++
356 lines
15 KiB
C++
/*
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* Copyright (c) 2024, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/MemoryStream.h>
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#include <LibGfx/Bitmap.h>
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#include <LibGfx/ICC/BinaryWriter.h>
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#include <LibGfx/ICC/Profile.h>
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#include <LibGfx/ICC/WellKnownProfiles.h>
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#include <LibGfx/ImageFormats/AnimationWriter.h>
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#include <LibGfx/ImageFormats/BMPLoader.h>
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#include <LibGfx/ImageFormats/BMPWriter.h>
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#include <LibGfx/ImageFormats/GIFLoader.h>
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#include <LibGfx/ImageFormats/GIFWriter.h>
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#include <LibGfx/ImageFormats/JPEGLoader.h>
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#include <LibGfx/ImageFormats/JPEGWriter.h>
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#include <LibGfx/ImageFormats/PNGLoader.h>
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#include <LibGfx/ImageFormats/PNGWriter.h>
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#include <LibGfx/ImageFormats/WebPLoader.h>
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#include <LibGfx/ImageFormats/WebPWriter.h>
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#include <LibTest/TestCase.h>
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static ErrorOr<NonnullRefPtr<Gfx::Bitmap>> expect_single_frame(Gfx::ImageDecoderPlugin& plugin_decoder)
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{
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EXPECT_EQ(plugin_decoder.frame_count(), 1u);
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EXPECT(!plugin_decoder.is_animated());
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EXPECT(!plugin_decoder.loop_count());
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auto frame_descriptor = TRY(plugin_decoder.frame(0));
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EXPECT_EQ(frame_descriptor.duration, 0);
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return *frame_descriptor.image;
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}
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static ErrorOr<NonnullRefPtr<Gfx::Bitmap>> expect_single_frame_of_size(Gfx::ImageDecoderPlugin& plugin_decoder, Gfx::IntSize size)
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{
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EXPECT_EQ(plugin_decoder.size(), size);
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auto frame = TRY(expect_single_frame(plugin_decoder));
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EXPECT_EQ(frame->size(), size);
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return frame;
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}
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template<class Writer, class... ExtraArgs>
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static ErrorOr<ByteBuffer> encode_bitmap(Gfx::Bitmap const& bitmap, ExtraArgs... extra_args)
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{
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if constexpr (requires(AllocatingMemoryStream stream) { Writer::encode(stream, bitmap, extra_args...); }) {
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AllocatingMemoryStream stream;
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TRY(Writer::encode(stream, bitmap, extra_args...));
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return stream.read_until_eof();
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} else {
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return Writer::encode(bitmap, extra_args...);
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}
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}
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template<class Writer, class Loader>
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static ErrorOr<NonnullRefPtr<Gfx::Bitmap>> get_roundtrip_bitmap(Gfx::Bitmap const& bitmap)
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{
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auto encoded_data = TRY(encode_bitmap<Writer>(bitmap));
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return expect_single_frame_of_size(*TRY(Loader::create(encoded_data)), bitmap.size());
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}
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static void expect_bitmaps_equal(Gfx::Bitmap const& a, Gfx::Bitmap const& b)
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{
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VERIFY(a.size() == b.size());
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for (int y = 0; y < a.height(); ++y)
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for (int x = 0; x < a.width(); ++x)
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EXPECT_EQ(a.get_pixel(x, y), b.get_pixel(x, y));
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}
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template<class Writer, class Loader>
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static ErrorOr<void> test_roundtrip(Gfx::Bitmap const& bitmap)
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{
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auto decoded = TRY((get_roundtrip_bitmap<Writer, Loader>(bitmap)));
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expect_bitmaps_equal(*decoded, bitmap);
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return {};
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}
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static ErrorOr<AK::NonnullRefPtr<Gfx::Bitmap>> create_test_rgb_bitmap()
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{
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auto bitmap = TRY(Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { 47, 33 }));
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for (int y = 0; y < bitmap->height(); ++y)
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for (int x = 0; x < bitmap->width(); ++x)
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bitmap->set_pixel(x, y, Gfx::Color((x * 255) / bitmap->width(), (y * 255) / bitmap->height(), x + y));
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return bitmap;
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}
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static ErrorOr<AK::NonnullRefPtr<Gfx::Bitmap>> create_test_rgba_bitmap()
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{
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auto bitmap = TRY(create_test_rgb_bitmap());
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for (int y = 0; y < bitmap->height(); ++y) {
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for (int x = 0; x < bitmap->width(); ++x) {
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Color pixel = bitmap->get_pixel(x, y);
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pixel.set_alpha(255 - x);
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bitmap->set_pixel(x, y, pixel);
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}
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}
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return bitmap;
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}
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TEST_CASE(test_bmp)
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{
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TRY_OR_FAIL((test_roundtrip<Gfx::BMPWriter, Gfx::BMPImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgb_bitmap()))));
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TRY_OR_FAIL((test_roundtrip<Gfx::BMPWriter, Gfx::BMPImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgba_bitmap()))));
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}
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TEST_CASE(test_gif)
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{
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// Let's limit the size of the image so every color can fit in a color table of 256 elements.
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auto bitmap = TRY_OR_FAIL(TRY_OR_FAIL(create_test_rgb_bitmap())->cropped({ 0, 0, 16, 16 }));
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auto encoded_bitmap = TRY_OR_FAIL((encode_bitmap<Gfx::GIFWriter>(bitmap)));
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auto decoder = TRY_OR_FAIL(Gfx::GIFImageDecoderPlugin::create(encoded_bitmap));
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EXPECT_EQ(decoder->size(), bitmap->size());
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EXPECT_EQ(decoder->frame_count(), 1u);
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EXPECT(!decoder->is_animated());
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expect_bitmaps_equal(*TRY_OR_FAIL(decoder->frame(0)).image, bitmap);
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}
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TEST_CASE(test_gif_animated)
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{
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auto bitmap_1 = TRY_OR_FAIL(TRY_OR_FAIL(create_test_rgb_bitmap())->cropped({ 0, 0, 16, 16 }));
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auto bitmap_2 = TRY_OR_FAIL(TRY_OR_FAIL(create_test_rgb_bitmap())->cropped({ 16, 16, 16, 16 }));
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auto bitmap_3 = TRY_OR_FAIL(bitmap_2->clone());
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bitmap_3->scanline(3)[3] = Color(Color::NamedColor::Red).value();
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auto stream_buffer = TRY_OR_FAIL(ByteBuffer::create_uninitialized(3072));
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FixedMemoryStream stream { Bytes { stream_buffer } };
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auto animation_writer = TRY_OR_FAIL(Gfx::GIFWriter::start_encoding_animation(stream, bitmap_1->size(), 0));
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TRY_OR_FAIL(animation_writer->add_frame(*bitmap_1, 100));
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TRY_OR_FAIL(animation_writer->add_frame(*bitmap_2, 200));
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TRY_OR_FAIL(animation_writer->add_frame_relative_to_last_frame(*bitmap_3, 200, *bitmap_2));
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auto encoded_animation = ReadonlyBytes { stream_buffer.data(), stream.offset() };
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auto decoder = TRY_OR_FAIL(Gfx::GIFImageDecoderPlugin::create(encoded_animation));
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EXPECT_EQ(decoder->size(), bitmap_1->size());
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EXPECT_EQ(decoder->frame_count(), 3u);
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EXPECT_EQ(decoder->loop_count(), 0u);
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EXPECT(decoder->is_animated());
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auto const frame_1 = TRY_OR_FAIL(decoder->frame(0));
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EXPECT_EQ(frame_1.duration, 100);
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expect_bitmaps_equal(*frame_1.image, bitmap_1);
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auto const frame_2 = TRY_OR_FAIL(decoder->frame(1));
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EXPECT_EQ(frame_2.duration, 200);
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expect_bitmaps_equal(*frame_2.image, bitmap_2);
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auto const frame_3 = TRY_OR_FAIL(decoder->frame(2));
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EXPECT_EQ(frame_3.duration, 200);
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expect_bitmaps_equal(*frame_3.image, bitmap_3);
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}
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TEST_CASE(test_jpeg)
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{
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// JPEG is lossy, so the roundtripped bitmap won't match the original bitmap. But it should still have the same size.
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(void)TRY_OR_FAIL((get_roundtrip_bitmap<Gfx::JPEGWriter, Gfx::JPEGImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgb_bitmap()))));
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}
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TEST_CASE(test_png)
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{
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TRY_OR_FAIL((test_roundtrip<Gfx::PNGWriter, Gfx::PNGImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgb_bitmap()))));
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TRY_OR_FAIL((test_roundtrip<Gfx::PNGWriter, Gfx::PNGImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgba_bitmap()))));
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}
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TEST_CASE(test_webp)
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{
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TRY_OR_FAIL((test_roundtrip<Gfx::WebPWriter, Gfx::WebPImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgb_bitmap()))));
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TRY_OR_FAIL((test_roundtrip<Gfx::WebPWriter, Gfx::WebPImageDecoderPlugin>(TRY_OR_FAIL(create_test_rgba_bitmap()))));
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}
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TEST_CASE(test_webp_color_indexing_transform)
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{
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Array<Color, 256> colors;
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for (size_t i = 0; i < colors.size(); ++i) {
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colors[i].set_red(i);
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colors[i].set_green(255 - i);
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colors[i].set_blue(128);
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colors[i].set_alpha(255 - i / 16);
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}
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for (int bits_per_pixel : { 1, 2, 4, 8 }) {
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int number_of_colors = 1 << bits_per_pixel;
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auto bitmap = TRY_OR_FAIL(Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { 47, 33 }));
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for (int y = 0; y < bitmap->height(); ++y)
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for (int x = 0; x < bitmap->width(); ++x)
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bitmap->set_pixel(x, y, colors[(x * bitmap->width() + y) % number_of_colors]);
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auto encoded_data = TRY_OR_FAIL(encode_bitmap<Gfx::WebPWriter>(bitmap));
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auto decoded_bitmap = TRY_OR_FAIL(expect_single_frame_of_size(*TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_data)), bitmap->size()));
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expect_bitmaps_equal(*decoded_bitmap, *bitmap);
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Gfx::WebPEncoderOptions options;
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options.vp8l_options.allowed_transforms = 0;
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auto encoded_data_without_color_indexing = TRY_OR_FAIL(encode_bitmap<Gfx::WebPWriter>(bitmap, options));
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EXPECT(encoded_data.size() < encoded_data_without_color_indexing.size());
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auto decoded_bitmap_without_color_indexing = TRY_OR_FAIL(expect_single_frame_of_size(*TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_data)), bitmap->size()));
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expect_bitmaps_equal(*decoded_bitmap_without_color_indexing, *decoded_bitmap);
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}
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}
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TEST_CASE(test_webp_color_indexing_transform_single_channel)
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{
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Array<Color, 256> colors;
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for (size_t i = 0; i < colors.size(); ++i) {
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colors[i].set_red(0);
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colors[i].set_green(255 - i);
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colors[i].set_blue(128);
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colors[i].set_alpha(255);
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}
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for (int bits_per_pixel : { 1, 2, 4, 8 }) {
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int number_of_colors = 1 << bits_per_pixel;
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auto bitmap = TRY_OR_FAIL(Gfx::Bitmap::create(Gfx::BitmapFormat::BGRA8888, { 47, 33 }));
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for (int y = 0; y < bitmap->height(); ++y)
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for (int x = 0; x < bitmap->width(); ++x)
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bitmap->set_pixel(x, y, colors[(x * bitmap->width() + y) % number_of_colors]);
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auto encoded_data = TRY_OR_FAIL(encode_bitmap<Gfx::WebPWriter>(bitmap));
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auto decoded_bitmap = TRY_OR_FAIL(expect_single_frame_of_size(*TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_data)), bitmap->size()));
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expect_bitmaps_equal(*decoded_bitmap, *bitmap);
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Gfx::WebPEncoderOptions options;
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options.vp8l_options.allowed_transforms = 0;
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auto encoded_data_without_color_indexing = TRY_OR_FAIL(encode_bitmap<Gfx::WebPWriter>(bitmap, options));
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if (bits_per_pixel == 8)
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EXPECT(encoded_data.size() <= encoded_data_without_color_indexing.size());
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else
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EXPECT(encoded_data.size() < encoded_data_without_color_indexing.size());
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auto decoded_bitmap_without_color_indexing = TRY_OR_FAIL(expect_single_frame_of_size(*TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_data)), bitmap->size()));
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expect_bitmaps_equal(*decoded_bitmap_without_color_indexing, *decoded_bitmap);
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}
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}
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TEST_CASE(test_webp_icc)
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{
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auto sRGB_icc_profile = MUST(Gfx::ICC::sRGB());
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auto sRGB_icc_data = MUST(Gfx::ICC::encode(sRGB_icc_profile));
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auto rgba_bitmap = TRY_OR_FAIL(create_test_rgba_bitmap());
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Gfx::WebPEncoderOptions options;
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options.icc_data = sRGB_icc_data;
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auto encoded_rgba_bitmap = TRY_OR_FAIL((encode_bitmap<Gfx::WebPWriter>(rgba_bitmap, options)));
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auto decoded_rgba_plugin = TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_rgba_bitmap));
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expect_bitmaps_equal(*TRY_OR_FAIL(expect_single_frame_of_size(*decoded_rgba_plugin, rgba_bitmap->size())), rgba_bitmap);
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auto decoded_rgba_profile = TRY_OR_FAIL(Gfx::ICC::Profile::try_load_from_externally_owned_memory(TRY_OR_FAIL(decoded_rgba_plugin->icc_data()).value()));
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auto reencoded_icc_data = TRY_OR_FAIL(Gfx::ICC::encode(decoded_rgba_profile));
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EXPECT_EQ(sRGB_icc_data, reencoded_icc_data);
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}
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TEST_CASE(test_webp_animation)
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{
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auto rgb_bitmap = TRY_OR_FAIL(create_test_rgb_bitmap());
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auto rgba_bitmap = TRY_OR_FAIL(create_test_rgba_bitmap());
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// 20 kiB is enough for two 47x33 frames.
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auto stream_buffer = TRY_OR_FAIL(ByteBuffer::create_uninitialized(20 * 1024));
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FixedMemoryStream stream { Bytes { stream_buffer } };
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auto animation_writer = TRY_OR_FAIL(Gfx::WebPWriter::start_encoding_animation(stream, rgb_bitmap->size()));
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TRY_OR_FAIL(animation_writer->add_frame(*rgb_bitmap, 100));
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TRY_OR_FAIL(animation_writer->add_frame(*rgba_bitmap, 200));
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auto encoded_animation = ReadonlyBytes { stream_buffer.data(), stream.offset() };
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auto decoded_animation_plugin = TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_animation));
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EXPECT(decoded_animation_plugin->is_animated());
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EXPECT_EQ(decoded_animation_plugin->frame_count(), 2u);
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EXPECT_EQ(decoded_animation_plugin->loop_count(), 0u);
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EXPECT_EQ(decoded_animation_plugin->size(), rgb_bitmap->size());
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auto frame0 = TRY_OR_FAIL(decoded_animation_plugin->frame(0));
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EXPECT_EQ(frame0.duration, 100);
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expect_bitmaps_equal(*frame0.image, *rgb_bitmap);
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auto frame1 = TRY_OR_FAIL(decoded_animation_plugin->frame(1));
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EXPECT_EQ(frame1.duration, 200);
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expect_bitmaps_equal(*frame1.image, *rgba_bitmap);
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}
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TEST_CASE(test_webp_incremental_animation)
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{
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auto rgb_bitmap_1 = TRY_OR_FAIL(create_test_rgb_bitmap());
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auto rgb_bitmap_2 = TRY_OR_FAIL(create_test_rgb_bitmap());
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// WebP frames can't be at odd coordinates. Make a pixel at an odd coordinate different to make sure we handle this.
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rgb_bitmap_2->scanline(3)[3] = Gfx::Color(Color::Red).value();
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// 20 kiB is enough for two 47x33 frames.
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auto stream_buffer = TRY_OR_FAIL(ByteBuffer::create_uninitialized(20 * 1024));
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FixedMemoryStream stream { Bytes { stream_buffer } };
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auto animation_writer = TRY_OR_FAIL(Gfx::WebPWriter::start_encoding_animation(stream, rgb_bitmap_1->size()));
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TRY_OR_FAIL(animation_writer->add_frame(*rgb_bitmap_1, 100));
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TRY_OR_FAIL(animation_writer->add_frame_relative_to_last_frame(*rgb_bitmap_2, 200, *rgb_bitmap_1));
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auto encoded_animation = ReadonlyBytes { stream_buffer.data(), stream.offset() };
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auto decoded_animation_plugin = TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_animation));
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EXPECT(decoded_animation_plugin->is_animated());
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EXPECT_EQ(decoded_animation_plugin->frame_count(), 2u);
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EXPECT_EQ(decoded_animation_plugin->loop_count(), 0u);
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EXPECT_EQ(decoded_animation_plugin->size(), rgb_bitmap_1->size());
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auto frame0 = TRY_OR_FAIL(decoded_animation_plugin->frame(0));
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EXPECT_EQ(frame0.duration, 100);
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expect_bitmaps_equal(*frame0.image, *rgb_bitmap_1);
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auto frame1 = TRY_OR_FAIL(decoded_animation_plugin->frame(1));
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EXPECT_EQ(frame1.duration, 200);
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expect_bitmaps_equal(*frame1.image, *rgb_bitmap_2);
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}
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TEST_CASE(test_webp_incremental_animation_two_identical_frames)
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{
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auto rgb_bitmap = TRY_OR_FAIL(create_test_rgba_bitmap());
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rgb_bitmap = TRY_OR_FAIL(rgb_bitmap->cropped({ 0, 0, 40, 20 })); // Even-sized.
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// 20 kiB is enough for two 47x33 frames.
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auto stream_buffer = TRY_OR_FAIL(ByteBuffer::create_uninitialized(20 * 1024));
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FixedMemoryStream stream { Bytes { stream_buffer } };
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auto animation_writer = TRY_OR_FAIL(Gfx::WebPWriter::start_encoding_animation(stream, rgb_bitmap->size()));
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TRY_OR_FAIL(animation_writer->add_frame(*rgb_bitmap, 100));
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TRY_OR_FAIL(animation_writer->add_frame_relative_to_last_frame(*rgb_bitmap, 200, *rgb_bitmap));
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auto encoded_animation = ReadonlyBytes { stream_buffer.data(), stream.offset() };
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auto decoded_animation_plugin = TRY_OR_FAIL(Gfx::WebPImageDecoderPlugin::create(encoded_animation));
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EXPECT(decoded_animation_plugin->is_animated());
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EXPECT_EQ(decoded_animation_plugin->frame_count(), 2u);
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EXPECT_EQ(decoded_animation_plugin->loop_count(), 0u);
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EXPECT_EQ(decoded_animation_plugin->size(), rgb_bitmap->size());
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auto frame0 = TRY_OR_FAIL(decoded_animation_plugin->frame(0));
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EXPECT_EQ(frame0.duration, 100);
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expect_bitmaps_equal(*frame0.image, *rgb_bitmap);
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auto frame1 = TRY_OR_FAIL(decoded_animation_plugin->frame(1));
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EXPECT_EQ(frame1.duration, 200);
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expect_bitmaps_equal(*frame1.image, *rgb_bitmap);
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}
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