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https://github.com/LadybirdBrowser/ladybird
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e6dbcccb99
This saves us from having our own color conversion code, which was taking up a fair amount of time in VideoDataProvider. With this change, we should be able to play high resolution videos without interruptions on machines where the CPU can keep up with decoding. In order to make this change, ImmutableBitmap is now able to be constructed with YUV data instead of an RBG bitmap. It holds onto a YUVData instance that stores the buffers of image data, since Skia itself doesn't take ownership of them. In order to support greater than 8 bits of color depth, we normalize the 10- or 12-bit color values into a 16-bit range.
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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* Copyright (c) 2023-2025, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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* Copyright (c) 2026, Gregory Bertilson <gregory@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/AtomicRefCounted.h>
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#include <AK/Forward.h>
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#include <AK/NonnullOwnPtr.h>
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#include <LibGfx/BitmapExportResult.h>
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#include <LibGfx/Color.h>
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#include <LibGfx/ColorSpace.h>
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#include <LibGfx/Forward.h>
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#include <LibGfx/Rect.h>
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#include <LibGfx/YUVData.h>
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class SkImage;
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namespace Gfx {
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struct ImmutableBitmapImpl;
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#define ENUMERATE_EXPORT_FORMATS(X) \
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X(Gray8) \
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X(Alpha8) \
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X(RGB565) \
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X(RGBA5551) \
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X(RGBA4444) \
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X(RGB888) \
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X(RGBA8888)
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enum class ExportFormat : u8 {
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#define ENUMERATE_EXPORT_FORMAT(format) format,
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ENUMERATE_EXPORT_FORMATS(ENUMERATE_EXPORT_FORMAT)
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#undef ENUMERATE_EXPORT_FORMAT
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};
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[[nodiscard]] StringView export_format_name(ExportFormat);
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struct ExportFlags {
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enum : u8 {
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PremultiplyAlpha = 1 << 0,
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FlipY = 1 << 1,
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};
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};
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class ImmutableBitmap final : public AtomicRefCounted<ImmutableBitmap> {
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public:
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static NonnullRefPtr<ImmutableBitmap> create(NonnullRefPtr<Bitmap> bitmap, ColorSpace color_space = {});
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static NonnullRefPtr<ImmutableBitmap> create(NonnullRefPtr<Bitmap> bitmap, AlphaType, ColorSpace color_space = {});
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static NonnullRefPtr<ImmutableBitmap> create_snapshot_from_painting_surface(NonnullRefPtr<PaintingSurface>);
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static ErrorOr<NonnullRefPtr<ImmutableBitmap>> create_from_yuv(NonnullOwnPtr<YUVData>);
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~ImmutableBitmap();
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bool is_yuv_backed() const;
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bool ensure_sk_image(SkiaBackendContext&) const;
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int width() const;
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int height() const;
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IntRect rect() const;
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IntSize size() const;
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AlphaType alpha_type() const;
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SkImage const* sk_image() const;
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[[nodiscard]] ErrorOr<BitmapExportResult> export_to_byte_buffer(ExportFormat format, int flags, Optional<int> target_width, Optional<int> target_height) const;
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Color get_pixel(int x, int y) const;
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// Returns nullptr for YUV-backed bitmaps
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RefPtr<Bitmap const> bitmap() const;
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private:
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friend class YUVData;
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mutable NonnullOwnPtr<ImmutableBitmapImpl> m_impl;
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explicit ImmutableBitmap(NonnullOwnPtr<ImmutableBitmapImpl> bitmap);
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};
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}
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