1 files changed, 96 insertions, 0 deletions
diff --git a/dom/media/ipc/VideoDecoderManagerChild.h b/dom/media/ipc/VideoDecoderManagerChild.h
new file mode 100644
index 000000000..1e67a590e
--- /dev/null
+++ b/dom/media/ipc/VideoDecoderManagerChild.h
@@ -0,0 +1,96 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=99: */
+/* 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 include_dom_ipc_VideoDecoderManagerChild_h
+#define include_dom_ipc_VideoDecoderManagerChild_h
+
+#include "mozilla/RefPtr.h"
+#include "mozilla/dom/PVideoDecoderManagerChild.h"
+
+namespace mozilla {
+namespace gfx {
+class SourceSurface;
+}
+namespace dom {
+
+class VideoDecoderManagerChild final : public PVideoDecoderManagerChild
+                                     , public mozilla::ipc::IShmemAllocator
+{
+public:
+  NS_INLINE_DECL_THREADSAFE_REFCOUNTING(VideoDecoderManagerChild)
+
+  // Can only be called from the manager thread
+  static VideoDecoderManagerChild* GetSingleton();
+
+  // Can be called from any thread.
+  static nsIThread* GetManagerThread();
+  static AbstractThread* GetManagerAbstractThread();
+
+  // Can be called from any thread, dispatches the request to the IPDL thread internally
+  // and will be ignored if the IPDL actor has been destroyed.
+  already_AddRefed<gfx::SourceSurface> Readback(const SurfaceDescriptorGPUVideo& aSD);
+  void DeallocateSurfaceDescriptorGPUVideo(const SurfaceDescriptorGPUVideo& aSD);
+
+  bool AllocShmem(size_t aSize,
+                  mozilla::ipc::SharedMemory::SharedMemoryType aShmType,
+                  mozilla::ipc::Shmem* aShmem) override
+  {
+    return PVideoDecoderManagerChild::AllocShmem(aSize, aShmType, aShmem);
+  }
+  bool AllocUnsafeShmem(size_t aSize,
+                        mozilla::ipc::SharedMemory::SharedMemoryType aShmType,
+                        mozilla::ipc::Shmem* aShmem) override
+  {
+    return PVideoDecoderManagerChild::AllocUnsafeShmem(aSize, aShmType, aShmem);
+  }
+
+  // Can be called from any thread, dispatches the request to the IPDL thread internally
+  // and will be ignored if the IPDL actor has been destroyed.
+  bool DeallocShmem(mozilla::ipc::Shmem& aShmem) override;
+
+  // Main thread only
+  static void InitForContent(Endpoint<PVideoDecoderManagerChild>&& aVideoManager);
+  static void Shutdown();
+
+  // Run aTask (on the manager thread) when we next attempt to create a new manager
+  // (even if creation fails). Intended to be called from ActorDestroy when we get
+  // notified that the old manager is being destroyed.
+  // Can only be called from the manager thread.
+  void RunWhenRecreated(already_AddRefed<Runnable> aTask);
+
+  bool CanSend();
+
+protected:
+  void InitIPDL();
+
+  void ActorDestroy(ActorDestroyReason aWhy) override;
+  void DeallocPVideoDecoderManagerChild() override;
+
+  void HandleFatalError(const char* aName, const char* aMsg) const override;
+
+  PVideoDecoderChild* AllocPVideoDecoderChild() override;
+  bool DeallocPVideoDecoderChild(PVideoDecoderChild* actor) override;
+
+private:
+  // Main thread only
+  static void InitializeThread();
+
+  VideoDecoderManagerChild()
+    : mCanSend(false)
+  {}
+  ~VideoDecoderManagerChild() {}
+
+  static void Open(Endpoint<PVideoDecoderManagerChild>&& aEndpoint);
+
+  RefPtr<VideoDecoderManagerChild> mIPDLSelfRef;
+
+  // Should only ever be accessed on the manager thread.
+  bool mCanSend;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // include_dom_ipc_VideoDecoderManagerChild_h