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LibGfx/WebPWriter: Add a toggle for disabling individual transforms

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This commit is contained in:
Nico Weber
2024-05-29 18:24:41 -04:00
committed by Jelle Raaijmakers
parent 4a327d98a4
commit 533b29dde7
Notes: sideshowbarker 2024-07-17 20:58:35 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/533b29dde7
Pull-request: https://github.com/SerenityOS/serenity/pull/24483
Reviewed-by: https://github.com/gmta ✅
5 changed files with 22 additions and 11 deletions
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9
Userland/Libraries/LibGfx/ImageFormats/WebPWriterLossless.cpp
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@@ -411,13 +411,14 @@ static ErrorOr<NonnullRefPtr<Bitmap>> maybe_write_color_indexing_transform(Littl
return new_bitmap;
}
static ErrorOr<void> write_VP8L_image_data(Stream& stream, NonnullRefPtr<Bitmap> bitmap, IsOpaque& is_fully_opaque)
static ErrorOr<void> write_VP8L_image_data(Stream& stream, NonnullRefPtr<Bitmap> bitmap, VP8LEncoderOptions const& options, IsOpaque& is_fully_opaque)
{
LittleEndianOutputBitStream bit_stream { MaybeOwned<Stream>(stream) };
// image-stream = optional-transform spatially-coded-image
// optional-transform = (%b1 transform optional-transform) / %b0
bitmap = TRY(maybe_write_color_indexing_transform(bit_stream, bitmap, is_fully_opaque));
if (options.allowed_transforms & (1u << COLOR_INDEXING_TRANSFORM))
bitmap = TRY(maybe_write_color_indexing_transform(bit_stream, bitmap, is_fully_opaque));
TRY(bit_stream.write_bits(0u, 1u)); // No further transforms for now.
TRY(write_VP8L_coded_image(ImageKind::SpatiallyCoded, bit_stream, *bitmap, is_fully_opaque));
@@ -429,11 +430,11 @@ static ErrorOr<void> write_VP8L_image_data(Stream& stream, NonnullRefPtr<Bitmap>
return {};
}
ErrorOr<ByteBuffer> compress_VP8L_image_data(Bitmap const& bitmap, bool& is_fully_opaque)
ErrorOr<ByteBuffer> compress_VP8L_image_data(Bitmap const& bitmap, VP8LEncoderOptions const& options, bool& is_fully_opaque)
{
AllocatingMemoryStream vp8l_data_stream;
IsOpaque is_opaque_struct;
TRY(write_VP8L_image_data(vp8l_data_stream, bitmap, is_opaque_struct));
TRY(write_VP8L_image_data(vp8l_data_stream, bitmap, options, is_opaque_struct));
VERIFY(is_opaque_struct.is_opacity_known);
is_fully_opaque = is_opaque_struct.is_fully_opaque;
return vp8l_data_stream.read_until_eof();