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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.
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
/*
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* Copyright (c) 2023-2025, 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 <AK/RefCounted.h>
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#include <LibGfx/ScalingMode.h>
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#include <LibGfx/Size.h>
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#include <LibJS/Heap/Cell.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/PixelUnits.h>
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namespace Web::HTML {
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// https://html.spec.whatwg.org/multipage/images.html#img-req-data
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class DecodedImageData : public JS::Cell {
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GC_CELL(DecodedImageData, JS::Cell);
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public:
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virtual ~DecodedImageData();
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virtual Optional<Gfx::IntRect> frame_rect([[maybe_unused]] size_t frame_index) const = 0;
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virtual void paint([[maybe_unused]] DisplayListRecordingContext&, [[maybe_unused]] size_t frame_index, [[maybe_unused]] Gfx::IntRect dst_rect, [[maybe_unused]] Gfx::IntRect clip_rect, [[maybe_unused]] Gfx::ScalingMode scaling_mode) const = 0;
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virtual RefPtr<Gfx::ImmutableBitmap> bitmap(size_t frame_index, Gfx::IntSize = {}) const = 0;
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virtual int frame_duration(size_t frame_index) const = 0;
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virtual size_t frame_count() const = 0;
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virtual size_t loop_count() const = 0;
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virtual bool is_animated() const = 0;
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virtual size_t notify_frame_advanced(size_t frame_index) { return frame_index; }
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virtual Optional<CSSPixels> intrinsic_width() const = 0;
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virtual Optional<CSSPixels> intrinsic_height() const = 0;
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virtual Optional<CSSPixelFraction> intrinsic_aspect_ratio() const = 0;
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protected:
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DecodedImageData();
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};
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}
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