beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-26 01:20:25 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

LibGfx/WebPWriter: Extract write_VP8L_coded_image()

Browse source
This commit is contained in:
Nico Weber 2024-05-29 18:24:41 -04:00 committed by Jelle Raaijmakers
parent d9aa594e86
commit 9dfb254c73
Notes: sideshowbarker 2024-07-17 03:00:02 +09:00 
Author: https://github.com/nico
Commit: https://github.com/SerenityOS/serenity/commit/9dfb254c73
Pull-request: https://github.com/SerenityOS/serenity/pull/24483
Reviewed-by: https://github.com/gmta ✅
1 changed files with 14 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

21
Userland/Libraries/LibGfx/ImageFormats/WebPWriterLossless.cpp
View file

@ -213,14 +213,8 @@ static ErrorOr<CanonicalCode> write_normal_code_lengths(LittleEndianOutputBitStr
return CanonicalCode::from_bytes(bit_lengths.span().trim(code_count));
}
static ErrorOr<void> write_VP8L_image_data(Stream& stream, Bitmap const& bitmap, bool& is_fully_opaque)
static ErrorOr<void> write_VP8L_coded_image(LittleEndianOutputBitStream& bit_stream, Bitmap const& bitmap, bool& is_fully_opaque)
{
LittleEndianOutputBitStream bit_stream { MaybeOwned<Stream>(stream) };
// image-stream = optional-transform spatially-coded-image
// optional-transform = (%b1 transform optional-transform) / %b0
TRY(bit_stream.write_bits(0u, 1u)); // No transform for now.
// https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification#5_image_data
// spatially-coded-image = color-cache-info meta-prefix data
@ -303,6 +297,19 @@ static ErrorOr<void> write_VP8L_image_data(Stream& stream, Bitmap const& bitmap,
// Image data.
TRY(write_image_data(bit_stream, bitmap, prefix_code_group));
return {};
}
static ErrorOr<void> write_VP8L_image_data(Stream& stream, Bitmap const& bitmap, bool& is_fully_opaque)
{
LittleEndianOutputBitStream bit_stream { MaybeOwned<Stream>(stream) };
// image-stream = optional-transform spatially-coded-image
// optional-transform = (%b1 transform optional-transform) / %b0
TRY(bit_stream.write_bits(0u, 1u)); // No transform for now.
TRY(write_VP8L_coded_image(bit_stream, bitmap, is_fully_opaque));
// FIXME: Make ~LittleEndianOutputBitStream do this, or make it VERIFY() that it has happened at least.
TRY(bit_stream.align_to_byte_boundary());
TRY(bit_stream.flush_buffer_to_stream());