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LibGfx: Make QOIWriter use ErrorOr

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In addition to it now handling allocation failures, the encode() API is
now consistent with PNGWriter.
This commit is contained in:
Nico Weber 2023-03-12 09:05:25 -04:00 • committed by Linus Groh
parent b698d64ee9
commit 9b297c634f
6 changed files with 62 additions and 52 deletions
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19
Userland/Libraries/LibGfx/QOIWriter.h
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@ -6,6 +6,7 @@
#pragma once
#include <AK/Error.h>
#include <AK/Vector.h>
#include <LibGfx/Bitmap.h>
@ -16,20 +17,20 @@ enum class Channels;
class QOIWriter {
public:
static ByteBuffer encode(Gfx::Bitmap const&);
static ErrorOr<ByteBuffer> encode(Gfx::Bitmap const&);
private:
QOIWriter() = default;
Vector<u8> m_data;
void add_header(u32 width, u32 height, Channels, Colorspace);
void add_rgb_chunk(u8, u8, u8);
void add_rgba_chunk(u8, u8, u8, u8);
void add_index_chunk(u32 index);
void add_diff_chunk(i8 red_difference, i8 green_difference, i8 blue_difference);
void add_luma_chunk(i8 relative_red_difference, i8 green_difference, i8 relative_blue_difference);
void add_run_chunk(u32 run_length);
void add_end_marker();
ErrorOr<void> add_header(u32 width, u32 height, Channels, Colorspace);
ErrorOr<void> add_rgb_chunk(u8, u8, u8);
ErrorOr<void> add_rgba_chunk(u8, u8, u8, u8);
ErrorOr<void> add_index_chunk(u32 index);
ErrorOr<void> add_diff_chunk(i8 red_difference, i8 green_difference, i8 blue_difference);
ErrorOr<void> add_luma_chunk(i8 relative_red_difference, i8 green_difference, i8 relative_blue_difference);
ErrorOr<void> add_run_chunk(u32 run_length);
ErrorOr<void> add_end_marker();
Array<Color, 64> running_array;
static u32 pixel_hash_function(Color pixel);