gfx/layers/ipc/VideoBridgeChild.h
author Bas Schouten <bschouten@mozilla.com>
Thu, 13 Dec 2018 15:59:22 +0100
changeset 509994 4c1fade7ceeb6407592d43ad0276c4b8090c3e7a
parent 505383 6f3709b3878117466168c40affa7bca0b60cf75b
child 515313 09c24f46810fa8c6ebd5879d32db87132e72a06e
permissions -rw-r--r--
Bug 1501442 - Part 1: Add CompositionPayload type and allow submitting it as part of a transaction. r=mstange

/* -*- 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_GFX_VIDEOBRIDGECHILD_H
#define MOZILLA_GFX_VIDEOBRIDGECHILD_H

#include "mozilla/layers/PVideoBridgeChild.h"
#include "ISurfaceAllocator.h"
#include "TextureForwarder.h"

namespace mozilla {
namespace layers {

class VideoBridgeChild final : public PVideoBridgeChild,
                               public TextureForwarder {
 public:
  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VideoBridgeChild, override);

  static void Startup();
  static void Shutdown();

  static VideoBridgeChild* GetSingleton();

  // PVideoBridgeChild
  PTextureChild* AllocPTextureChild(const SurfaceDescriptor& aSharedData,
                                    const ReadLockDescriptor& aReadLock,
                                    const LayersBackend& aLayersBackend,
                                    const TextureFlags& aFlags,
                                    const uint64_t& aSerial) override;
  bool DeallocPTextureChild(PTextureChild* actor) override;

  void ActorDestroy(ActorDestroyReason aWhy) override;
  void DeallocPVideoBridgeChild() override;

  // ISurfaceAllocator
  bool AllocUnsafeShmem(size_t aSize,
                        mozilla::ipc::SharedMemory::SharedMemoryType aShmType,
                        mozilla::ipc::Shmem* aShmem) override;
  bool AllocShmem(size_t aSize,
                  mozilla::ipc::SharedMemory::SharedMemoryType aShmType,
                  mozilla::ipc::Shmem* aShmem) override;
  bool DeallocShmem(mozilla::ipc::Shmem& aShmem) override;

  // TextureForwarder
  PTextureChild* CreateTexture(const SurfaceDescriptor& aSharedData,
                               const ReadLockDescriptor& aReadLock,
                               LayersBackend aLayersBackend,
                               TextureFlags aFlags, uint64_t aSerial,
                               wr::MaybeExternalImageId& aExternalImageId,
                               nsIEventTarget* aTarget = nullptr) override;

  // ClientIPCAllocator
  base::ProcessId GetParentPid() const override { return OtherPid(); }
  MessageLoop* GetMessageLoop() const override { return mMessageLoop; }
  void CancelWaitForRecycle(uint64_t aTextureId) override {
    MOZ_ASSERT(false, "NO RECYCLING HERE");
  }

  // ISurfaceAllocator
  bool IsSameProcess() const override;

  bool CanSend() { return mCanSend; }

 private:
  VideoBridgeChild();
  ~VideoBridgeChild();

  RefPtr<VideoBridgeChild> mIPDLSelfRef;
  MessageLoop* mMessageLoop;
  bool mCanSend;
};

}  // namespace layers
}  // namespace mozilla

#endif