f8640d813a
DecodedImageFrame only wraps a ref-counted Bitmap and color-space metadata. The frame object itself does not provide shared mutable state or lifetime ownership beyond those members, so ref-counting it adds an unnecessary layer of indirection.
65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
/*
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* Copyright (c) 2026, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
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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/HashFunctions.h>
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#include <AK/HashMap.h>
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#include <AK/RefPtr.h>
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#include <AK/Types.h>
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#include <LibGfx/DecodedImageFrame.h>
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#include <LibGfx/Forward.h>
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#include <core/SkRefCnt.h>
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class SkColorSpace;
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class SkImage;
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namespace Gfx {
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class DecodedImageFrameSkiaImageCache final {
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public:
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DecodedImageFrameSkiaImageCache();
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explicit DecodedImageFrameSkiaImageCache(RefPtr<SkiaBackendContext>);
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~DecodedImageFrameSkiaImageCache();
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sk_sp<SkImage> image_for_frame(DecodedImageFrame const&);
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void prune();
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private:
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struct DecodedImageFrameKeyTraits : public Traits<DecodedImageFrame> {
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static unsigned hash(DecodedImageFrame const& frame)
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{
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return pair_int_hash(
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ptr_hash(&frame.bitmap()),
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ptr_hash(color_space_pointer(frame)));
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}
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static bool equals(DecodedImageFrame const& a, DecodedImageFrame const& b)
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{
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return &a.bitmap() == &b.bitmap()
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&& color_space_pointer(a) == color_space_pointer(b);
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}
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static constexpr bool may_have_slow_equality_check() { return false; }
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private:
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static SkColorSpace const* color_space_pointer(DecodedImageFrame const& frame)
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{
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return frame.color_space().color_space<sk_sp<SkColorSpace>>().get();
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}
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};
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struct CachedImage {
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sk_sp<SkImage> image;
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u64 last_used_generation { 0 };
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};
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RefPtr<SkiaBackendContext> m_skia_backend_context;
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HashMap<DecodedImageFrame, CachedImage, DecodedImageFrameKeyTraits> m_images;
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u64 m_generation { 0 };
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};
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}
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