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97986f9739
Add AnimatedDecodedImageData which implements DecodedImageData with an 8-slot buffer pool instead of storing all frames in memory. Frames are requested on demand from the ImageDecoder service as the animation progresses. For a 344-frame animated image at 1920x1080, this reduces WebContent memory from ~1.3 GB to ~66 MB. The streaming class owns frame progression and synchronizes multiple callers (HTMLImageElement and ImageStyleValue) through notify_frame_advanced() returning the authoritative frame index. When a frame isn't in the pool, the last displayed frame is shown as a fallback (brief freeze rather than blank). Rename the old AnimatedBitmapDecodedImageData (which now only handles static/single-frame images) to BitmapDecodedImageData.
49 lines
1.7 KiB
C++
49 lines
1.7 KiB
C++
/*
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* Copyright (c) 2023, Andreas Kling <andreas@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 <LibGfx/Forward.h>
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#include <LibWeb/HTML/DecodedImageData.h>
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namespace Web::HTML {
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class BitmapDecodedImageData final : public DecodedImageData {
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GC_CELL(BitmapDecodedImageData, DecodedImageData);
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GC_DECLARE_ALLOCATOR(BitmapDecodedImageData);
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public:
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struct Frame {
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RefPtr<Gfx::ImmutableBitmap> bitmap;
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int duration { 0 };
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};
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static ErrorOr<GC::Ref<BitmapDecodedImageData>> create(JS::Realm&, Vector<Frame>&&, size_t loop_count, bool animated);
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virtual ~BitmapDecodedImageData() override;
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virtual RefPtr<Gfx::ImmutableBitmap> bitmap(size_t frame_index, Gfx::IntSize = {}) const override;
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virtual int frame_duration(size_t frame_index) const override;
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virtual size_t frame_count() const override { return m_frames.size(); }
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virtual size_t loop_count() const override { return m_loop_count; }
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virtual bool is_animated() const override { return m_animated; }
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virtual Optional<CSSPixels> intrinsic_width() const override;
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virtual Optional<CSSPixels> intrinsic_height() const override;
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virtual Optional<CSSPixelFraction> intrinsic_aspect_ratio() const override;
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virtual Optional<Gfx::IntRect> frame_rect(size_t frame_index) const override;
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virtual void paint(DisplayListRecordingContext&, size_t frame_index, Gfx::IntRect dst_rect, Gfx::IntRect clip_rect, Gfx::ScalingMode scaling_mode) const override;
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private:
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BitmapDecodedImageData(Vector<Frame>&&, size_t loop_count, bool animated);
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Vector<Frame> m_frames;
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size_t m_loop_count { 0 };
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bool m_animated { false };
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};
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}
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