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LibGfx/PortableFormat+image: Make encode take a Stream

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As we directly write to the stream, we don't need to store a copy of the
entire image in memory. However, writing to a stream is heavier on the
CPU than to a ByteBuffer. This commit unfortunately makes `add_pixels`
two times slower.
This commit is contained in:
Lucas CHOLLET 2023-04-30 21:13:50 -04:00 • committed by Andreas Kling
parent af6dc267d3
commit d4d3c3f262
3 changed files with 29 additions and 28 deletions
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6
Userland/Libraries/LibGfx/ImageFormats/PortableFormatWriter.h
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@ -26,13 +26,13 @@ class PortableFormatWriter {
public:
using Options = PortableFormatWriterOptions;
static ErrorOr<ByteBuffer> encode(Bitmap const&, Options options = Options {});
static ErrorOr<void> encode(Stream&, Bitmap const&, Options options = Options {});
private:
PortableFormatWriter() = delete;
static ErrorOr<void> add_header(ByteBuffer&, Options const& options, u32 width, u32 height, u32 max_value);
static ErrorOr<void> add_pixels(ByteBuffer&, Options const& options, Bitmap const&);
static ErrorOr<void> add_header(Stream&, Options const& options, u32 width, u32 height, u32 max_value);
static ErrorOr<void> add_pixels(Stream&, Options const& options, Bitmap const&);
};
}