зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
2.3 KiB
C++
Executable File
86 строки
2.3 KiB
C++
Executable File
/* -*- 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_LAYERS_KNOWSCOMPOSITOR
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#define MOZILLA_LAYERS_KNOWSCOMPOSITOR
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#include "mozilla/layers/LayersTypes.h" // for LayersBackend
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#include "mozilla/layers/CompositorTypes.h"
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namespace mozilla {
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namespace layers {
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class SyncObject;
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class TextureForwarder;
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class LayersIPCActor;
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/**
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* An abstract interface for classes that are tied to a specific Compositor across
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* IPDL and uses TextureFactoryIdentifier to describe this Compositor.
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*/
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class KnowsCompositor {
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public:
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NS_IMETHOD_(MozExternalRefCountType) AddRef(void) = 0;
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NS_IMETHOD_(MozExternalRefCountType) Release(void) = 0;
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KnowsCompositor();
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~KnowsCompositor();
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void IdentifyTextureHost(const TextureFactoryIdentifier& aIdentifier);
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SyncObject* GetSyncObject() { return mSyncObject; }
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int32_t GetMaxTextureSize() const
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{
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return mTextureFactoryIdentifier.mMaxTextureSize;
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}
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/**
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* Returns the type of backend that is used off the main thread.
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* We only don't allow changing the backend type at runtime so this value can
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* be queried once and will not change until Gecko is restarted.
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*/
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LayersBackend GetCompositorBackendType() const
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{
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return mTextureFactoryIdentifier.mParentBackend;
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}
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bool SupportsTextureBlitting() const
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{
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return mTextureFactoryIdentifier.mSupportsTextureBlitting;
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}
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bool SupportsPartialUploads() const
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{
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return mTextureFactoryIdentifier.mSupportsPartialUploads;
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}
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const TextureFactoryIdentifier& GetTextureFactoryIdentifier() const
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{
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return mTextureFactoryIdentifier;
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}
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int32_t GetSerial() { return mSerial; }
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/**
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* Helpers for finding other related interface. These are infallible.
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*/
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virtual TextureForwarder* GetTextureForwarder() = 0;
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virtual LayersIPCActor* GetLayersIPCActor() = 0;
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protected:
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TextureFactoryIdentifier mTextureFactoryIdentifier;
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RefPtr<SyncObject> mSyncObject;
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const int32_t mSerial;
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static mozilla::Atomic<int32_t> sSerialCounter;
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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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