зеркало из https://github.com/mozilla/gecko-dev.git
67 строки
2.4 KiB
C++
67 строки
2.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=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_GFX_RENDERTEXTUREHOSTWRAPPER_H
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#define MOZILLA_GFX_RENDERTEXTUREHOSTWRAPPER_H
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#include "RenderTextureHostSWGL.h"
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namespace mozilla {
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namespace wr {
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/**
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* RenderTextureHost of GPUVideoTextureHost.
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*
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* GPUVideoTextureHost wraps TextureHost. This class wraps RenderTextureHost of
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* the wrapped TextureHost. Lifetime of the wrapped TextureHost is usually
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* longer than GPUVideoTextureHost and the wrapped TextureHost is used by
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* multiple GPUVideoTextureHosts. This class is used to reduce recreations of
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* the wrappded RenderTextureHost. Initializations of some
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* RenderTextureHosts(RenderDXGITextureHost and
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* RenderDXGIYCbCrTextureHost) have overhead.
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*/
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class RenderTextureHostWrapper final : public RenderTextureHostSWGL {
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public:
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explicit RenderTextureHostWrapper(ExternalImageId aExternalImageId);
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// RenderTextureHost
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wr::WrExternalImage Lock(uint8_t aChannelIndex, gl::GLContext* aGL,
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wr::ImageRendering aRendering) override;
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void Unlock() override;
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void ClearCachedResources() override;
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RenderMacIOSurfaceTextureHost* AsRenderMacIOSurfaceTextureHost() override;
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RenderDXGITextureHost* AsRenderDXGITextureHost() override;
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RenderDXGIYCbCrTextureHost* AsRenderDXGIYCbCrTextureHost() override;
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// RenderTextureHostSWGL
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size_t GetPlaneCount() const override;
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gfx::SurfaceFormat GetFormat() const override;
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gfx::ColorDepth GetColorDepth() const override;
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gfx::YUVRangedColorSpace GetYUVColorSpace() const override;
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bool MapPlane(RenderCompositor* aCompositor, uint8_t aChannelIndex,
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PlaneInfo& aPlaneInfo) override;
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void UnmapPlanes() override;
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// This is just a wrapper, so doesn't need to report the
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// size of the wrapped object (which reports itself).
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size_t Bytes() override { return 0; }
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private:
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~RenderTextureHostWrapper() override;
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void EnsureTextureHost() const;
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RenderTextureHostSWGL* EnsureRenderTextureHostSWGL() const;
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const ExternalImageId mExternalImageId;
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mutable RefPtr<RenderTextureHost> mTextureHost;
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};
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} // namespace wr
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} // namespace mozilla
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#endif // MOZILLA_GFX_RENDERTEXTUREHOSTWRAPPER_H
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