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       1             : /* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
       2             :  * This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef gfx_layers_ipc_VideoBridgeParent_h_
       7             : #define gfx_layers_ipc_VideoBridgeParent_h_
       8             : 
       9             : #include "mozilla/layers/PVideoBridgeParent.h"
      10             : #include "mozilla/layers/ISurfaceAllocator.h"
      11             : 
      12             : namespace mozilla {
      13             : namespace layers {
      14             : 
      15             : class CompositorThreadHolder;
      16             : 
      17             : class VideoBridgeParent final : public PVideoBridgeParent,
      18             :                                 public HostIPCAllocator,
      19             :                                 public ShmemAllocator
      20             : {
      21             : public:
      22             :   VideoBridgeParent();
      23             :   ~VideoBridgeParent();
      24             : 
      25             :   static VideoBridgeParent* GetSingleton();
      26             :   TextureHost* LookupTexture(uint64_t aSerial);
      27             : 
      28             :   // PVideoBridgeParent
      29             :   void ActorDestroy(ActorDestroyReason aWhy) override;
      30             :   PTextureParent* AllocPTextureParent(const SurfaceDescriptor& aSharedData,
      31             :                                       const LayersBackend& aLayersBackend,
      32             :                                       const TextureFlags& aFlags,
      33             :                                       const uint64_t& aSerial) override;
      34             :   bool DeallocPTextureParent(PTextureParent* actor) override;
      35             : 
      36             :   // HostIPCAllocator
      37           0 :   base::ProcessId GetChildProcessId() override
      38             :   {
      39           0 :     return OtherPid();
      40             :   }
      41             :   void NotifyNotUsed(PTextureParent* aTexture, uint64_t aTransactionId) override;
      42             :   void SendAsyncMessage(const InfallibleTArray<AsyncParentMessageData>& aMessage) override;
      43             : 
      44             :   // ISurfaceAllocator
      45           0 :   ShmemAllocator* AsShmemAllocator() override { return this; }
      46             :   bool IsSameProcess() const override;
      47           0 :   bool IPCOpen() const override { return !mClosed; }
      48             : 
      49             :   // ShmemAllocator
      50             :   bool AllocShmem(size_t aSize,
      51             :                   ipc::SharedMemory::SharedMemoryType aType,
      52             :                   ipc::Shmem* aShmem) override;
      53             : 
      54             :   bool AllocUnsafeShmem(size_t aSize,
      55             :                         ipc::SharedMemory::SharedMemoryType aType,
      56             :                         ipc::Shmem* aShmem) override;
      57             : 
      58             :   void DeallocShmem(ipc::Shmem& aShmem) override;
      59             : 
      60             : private:
      61             :   void DeallocPVideoBridgeParent() override;
      62             : 
      63             :   // This keeps us alive until ActorDestroy(), at which point we do a
      64             :   // deferred destruction of ourselves.
      65             :   RefPtr<VideoBridgeParent> mSelfRef;
      66             :   RefPtr<CompositorThreadHolder> mCompositorThreadRef;
      67             : 
      68             :   std::map<uint64_t, PTextureParent*> mTextureMap;
      69             : 
      70             :   bool mClosed;
      71             : };
      72             : 
      73             : } // namespace layers
      74             : } // namespace mozilla
      75             : 
      76             : #endif // gfx_layers_ipc_VideoBridgeParent_h_