зеркало из https://github.com/mozilla/gecko-dev.git
64 строки
2.2 KiB
C++
64 строки
2.2 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_image_RecyclingSourceSurface_h
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#define mozilla_image_RecyclingSourceSurface_h
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#include "mozilla/gfx/2D.h"
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namespace mozilla {
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namespace image {
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class imgFrame;
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/**
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* This surface subclass will prevent the underlying surface from being recycled
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* as long as it is still alive. We will create this surface to wrap imgFrame's
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* mLockedSurface, if we are accessing it on a path that will keep the surface
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* alive for an indeterminate period of time (e.g. imgFrame::GetSourceSurface,
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* imgFrame::Draw with a recording or capture DrawTarget).
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*/
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class RecyclingSourceSurface final : public gfx::DataSourceSurface {
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public:
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RecyclingSourceSurface(imgFrame* aParent, gfx::DataSourceSurface* aSurface);
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MOZ_DECLARE_REFCOUNTED_VIRTUAL_TYPENAME(RecyclingSourceSurface, override);
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uint8_t* GetData() override { return mSurface->GetData(); }
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int32_t Stride() override { return mSurface->Stride(); }
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gfx::SurfaceType GetType() const override { return mType; }
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gfx::IntSize GetSize() const override { return mSurface->GetSize(); }
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gfx::SurfaceFormat GetFormat() const override {
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return mSurface->GetFormat();
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}
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void AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf, size_t& aHeapSizeOut,
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size_t& aNonHeapSizeOut, size_t& aExtHandlesOut,
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uint64_t& aExtIdOut) const override {}
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bool OnHeap() const override { return mSurface->OnHeap(); }
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bool Map(MapType aType, MappedSurface* aMappedSurface) override {
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return mSurface->Map(aType, aMappedSurface);
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}
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void Unmap() override { mSurface->Unmap(); }
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gfx::DataSourceSurface* GetChildSurface() const { return mSurface; }
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protected:
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void GuaranteePersistance() override {}
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~RecyclingSourceSurface() override;
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RefPtr<imgFrame> mParent;
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RefPtr<DataSourceSurface> mSurface;
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gfx::SurfaceType mType;
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};
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} // namespace image
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} // namespace mozilla
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#endif // mozilla_image_RecyclingSourceSurface_h
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