1 files changed, 82 insertions, 0 deletions
diff --git a/gfx/layers/ipc/VideoBridgeParent.h b/gfx/layers/ipc/VideoBridgeParent.h
new file mode 100644
index 0000000000..855c018df3
--- /dev/null
+++ b/gfx/layers/ipc/VideoBridgeParent.h
@@ -0,0 +1,82 @@
+/* -*- 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 gfx_layers_ipc_VideoBridgeParent_h_
+#define gfx_layers_ipc_VideoBridgeParent_h_
+
+#include "mozilla/layers/ISurfaceAllocator.h"
+#include "mozilla/layers/PVideoBridgeParent.h"
+
+namespace mozilla {
+namespace layers {
+
+enum class VideoBridgeSource : uint8_t;
+class CompositorThreadHolder;
+
+class VideoBridgeParent final : public PVideoBridgeParent,
+                                public HostIPCAllocator,
+                                public mozilla::ipc::IShmemAllocator {
+ public:
+  ~VideoBridgeParent();
+
+  static VideoBridgeParent* GetSingleton(
+      const Maybe<VideoBridgeSource>& aSource);
+
+  static void Open(Endpoint<PVideoBridgeParent>&& aEndpoint,
+                   VideoBridgeSource aSource);
+
+  TextureHost* LookupTexture(uint64_t aSerial);
+
+  // PVideoBridgeParent
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+  PTextureParent* AllocPTextureParent(const SurfaceDescriptor& aSharedData,
+                                      const ReadLockDescriptor& aReadLock,
+                                      const LayersBackend& aLayersBackend,
+                                      const TextureFlags& aFlags,
+                                      const uint64_t& aSerial);
+  bool DeallocPTextureParent(PTextureParent* actor);
+
+  // HostIPCAllocator
+  base::ProcessId GetChildProcessId() override { return OtherPid(); }
+  void NotifyNotUsed(PTextureParent* aTexture,
+                     uint64_t aTransactionId) override;
+  void SendAsyncMessage(
+      const nsTArray<AsyncParentMessageData>& aMessage) override;
+
+  // ISurfaceAllocator
+  IShmemAllocator* AsShmemAllocator() override { return this; }
+  bool IsSameProcess() const override;
+  bool IPCOpen() const override { return !mClosed; }
+
+  // IShmemAllocator
+  bool AllocShmem(size_t aSize, ipc::SharedMemory::SharedMemoryType aType,
+                  ipc::Shmem* aShmem) override;
+
+  bool AllocUnsafeShmem(size_t aSize, ipc::SharedMemory::SharedMemoryType aType,
+                        ipc::Shmem* aShmem) override;
+
+  bool DeallocShmem(ipc::Shmem& aShmem) override;
+
+ private:
+  explicit VideoBridgeParent(VideoBridgeSource aSource);
+  void Bind(Endpoint<PVideoBridgeParent>&& aEndpoint);
+
+  void ActorDealloc() override;
+
+  // This keeps us alive until ActorDestroy(), at which point we do a
+  // deferred destruction of ourselves.
+  RefPtr<VideoBridgeParent> mSelfRef;
+  RefPtr<CompositorThreadHolder> mCompositorThreadHolder;
+
+  std::map<uint64_t, PTextureParent*> mTextureMap;
+
+  bool mClosed;
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif  // gfx_layers_ipc_VideoBridgeParent_h_