/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef MOZILLA_LAYERS_TEXTUREFORWARDER #define MOZILLA_LAYERS_TEXTUREFORWARDER #include <stdint.h> // for int32_t, uint64_t #include "gfxTypes.h" #include "mozilla/layers/LayersTypes.h" // for LayersBackend #include "mozilla/layers/TextureClient.h" // for TextureClient #include "mozilla/layers/KnowsCompositor.h" namespace mozilla { namespace ipc { class IShmemAllocator; } namespace layers { /** * An abstract interface for classes that implement the autogenerated * IPDL actor class. Lets us check if they are still valid for IPC. */ class LayersIPCActor { public: virtual bool IPCOpen() const { return true; } }; /** * An abstract interface for LayersIPCActors that implement a top-level * IPDL protocol so also have their own channel. * Has their own MessageLoop for message dispatch, and can allocate * shmem. */ class LayersIPCChannel : public LayersIPCActor , public mozilla::ipc::IShmemAllocator { public: NS_IMETHOD_(MozExternalRefCountType) AddRef(void) = 0; NS_IMETHOD_(MozExternalRefCountType) Release(void) = 0; virtual bool IsSameProcess() const = 0; virtual bool UsesImageBridge() const { return false; } virtual base::ProcessId GetParentPid() const = 0; virtual MessageLoop* GetMessageLoop() const = 0; virtual FixedSizeSmallShmemSectionAllocator* GetTileLockAllocator() { return nullptr; } virtual void CancelWaitForRecycle(uint64_t aTextureId) = 0; protected: virtual ~LayersIPCChannel() {} }; /** * An abstract interface for classes that can allocate PTexture objects * across IPDL. Currently a sub-class of LayersIPCChannel for simplicity * since all our implementations use both, but could be independant if needed. */ class TextureForwarder : public LayersIPCChannel { public: /** * Create a TextureChild/Parent pair as as well as the TextureHost on the parent side. */ virtual PTextureChild* CreateTexture( const SurfaceDescriptor& aSharedData, LayersBackend aLayersBackend, TextureFlags aFlags, uint64_t aSerial) = 0; }; } // namespace layers } // namespace mozilla #endif