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LibGfx/ILBM: Add support for uncompressed files

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This commit is contained in:
Nicolas Ramz 2023-09-11 10:46:15 +02:00 committed by Sam Atkins
parent 80a78c4deb
commit b8f8b22aa5
Notes: sideshowbarker 2024-07-16 21:45:42 +09:00 
Author: https://github.com/warpdesign
Commit: https://github.com/SerenityOS/serenity/commit/b8f8b22aa5
Pull-request: https://github.com/SerenityOS/serenity/pull/21025
Reviewed-by: https://github.com/AtkinsSJ ✅
3 changed files with 21 additions and 8 deletions
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15
Tests/LibGfx/TestImageDecoder.cpp
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@ -95,7 +95,20 @@ TEST_CASE(test_ilbm)
EXPECT(Gfx::ILBMImageDecoderPlugin::sniff(file->bytes()));
auto plugin_decoder = MUST(Gfx::ILBMImageDecoderPlugin::create(file->bytes()));
expect_single_frame_of_size(*plugin_decoder, { 320, 200 });
auto frame = expect_single_frame_of_size(*plugin_decoder, { 320, 200 });
EXPECT_EQ(frame.image->get_pixel(8, 0), Gfx::Color(0xee, 0xbb, 0, 255));
}
TEST_CASE(test_ilbm_uncompressed)
{
auto file = MUST(Core::MappedFile::map(TEST_INPUT("ilbm/gradient-uncompressed.iff"sv)));
EXPECT(Gfx::ILBMImageDecoderPlugin::sniff(file->bytes()));
auto plugin_decoder = MUST(Gfx::ILBMImageDecoderPlugin::create(file->bytes()));
auto frame = expect_single_frame_of_size(*plugin_decoder, { 320, 200 });
EXPECT_EQ(frame.image->get_pixel(8, 0), Gfx::Color(0xee, 0xbb, 0, 255));
}
TEST_CASE(test_jpeg_sof0_one_scan)

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Tests/LibGfx/test-inputs/ilbm/gradient-uncompressed.iff Normal file
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14
Userland/Libraries/LibGfx/ImageFormats/ILBMLoader.cpp
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@ -193,17 +193,17 @@ static ErrorOr<void> decode_body_chunk(Chunk body_chunk, ILBMLoadingContext& con
{
dbgln_if(ILBM_DEBUG, "decode_body_chunk {}", body_chunk.data.size());
if (context.bm_header.compression == CompressionType::ByteRun) {
// these are the uncompressed interleaved bitmap planes
auto plane_data = TRY(uncompress_byte_run(body_chunk.data, context));
// that we need to convert to chunky pixel data
auto pixel_data = TRY(planar_to_chunky(plane_data, context));
ByteBuffer pixel_data;
context.bitmap = TRY(chunky_to_bitmap(context, pixel_data));
if (context.bm_header.compression == CompressionType::ByteRun) {
auto plane_data = TRY(uncompress_byte_run(body_chunk.data, context));
pixel_data = TRY(planar_to_chunky(plane_data, context));
} else {
return Error::from_string_literal("Uncompress body not supported yet");
pixel_data = TRY(planar_to_chunky(body_chunk.data, context));
}
context.bitmap = TRY(chunky_to_bitmap(context, pixel_data));
return {};
}