зеркало из https://github.com/mozilla/gecko-dev.git
54 строки
1.8 KiB
C++
54 строки
1.8 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 "RenderTextureHost.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(RenderDXGITextureHostOGL and
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* RenderDXGIYCbCrTextureHostOGL) have overhead.
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*/
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class RenderTextureHostWrapper final : public RenderTextureHost {
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public:
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explicit RenderTextureHostWrapper(ExternalImageId aExternalImageId);
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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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RenderMacIOSurfaceTextureHostOGL* AsRenderMacIOSurfaceTextureHostOGL()
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override;
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virtual RenderDXGITextureHostOGL* AsRenderDXGITextureHostOGL() override;
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private:
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~RenderTextureHostWrapper() override;
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void EnsureTextureHost();
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const ExternalImageId mExternalImageId;
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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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