зеркало из https://github.com/mozilla/gecko-dev.git
84 строки
2.9 KiB
C++
84 строки
2.9 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_SHAREDSURFACESCHILD_H
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#define MOZILLA_GFX_SHAREDSURFACESCHILD_H
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#include <stddef.h> // for size_t
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#include <stdint.h> // for uint32_t, uint64_t
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#include "mozilla/Attributes.h" // for override
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#include "mozilla/RefPtr.h" // for already_AddRefed
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#include "mozilla/StaticPtr.h" // for StaticRefPtr
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#include "mozilla/webrender/WebRenderTypes.h" // for wr::ImageKey
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namespace mozilla {
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namespace gfx {
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class SourceSurfaceSharedData;
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} // namespace gfx
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namespace wr {
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class IpcResourceUpdateQueue;
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} // namespace wr
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namespace layers {
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class CompositorManagerChild;
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class ImageContainer;
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class WebRenderLayerManager;
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class SharedSurfacesChild final
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{
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public:
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/**
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* Request that the surface be mapped into the compositor thread's memory
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* space. This is useful for when the caller itself has no present need for
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* the surface to be mapped, but knows there will be such a need in the
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* future. This may be called from any thread, but it may cause a dispatch to
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* the main thread.
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*/
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static void Share(gfx::SourceSurfaceSharedData* aSurface);
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/**
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* Request that the surface be mapped into the compositor thread's memory
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* space, and a valid ImageKey be generated for it for use with WebRender.
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* This must be called from the main thread.
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*/
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static nsresult Share(gfx::SourceSurfaceSharedData* aSurface,
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WebRenderLayerManager* aManager,
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wr::IpcResourceUpdateQueue& aResources,
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wr::ImageKey& aKey);
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/**
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* Request that the first surface in the image container's current images be
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* mapped into the compositor thread's memory space, and a valid ImageKey be
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* generated for it for use with WebRender. If a different method should be
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* used to share the image data for this particular container, it will return
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* NS_ERROR_NOT_IMPLEMENTED. This must be called from the main thread.
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*/
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static nsresult Share(ImageContainer* aContainer,
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WebRenderLayerManager* aManager,
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wr::IpcResourceUpdateQueue& aResources,
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wr::ImageKey& aKey);
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private:
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SharedSurfacesChild() = delete;
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~SharedSurfacesChild() = delete;
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class ImageKeyData;
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class SharedUserData;
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static nsresult ShareInternal(gfx::SourceSurfaceSharedData* aSurface,
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SharedUserData** aUserData);
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static void Unshare(const wr::ExternalImageId& aId, nsTArray<ImageKeyData>& aKeys);
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static void DestroySharedUserData(void* aClosure);
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};
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} // namespace layers
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} // namespace mozilla
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#endif
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