Sample code: IPC Transport object for GPU

content/common/gpu/client/ipc/chrome/chrome_gpu_video_decode_accelerator_host_ipc_transport.h

Index: content/common/gpu/client/ipc/chrome/chrome_gpu_video_decode_accelerator_host_ipc_transport.h
diff --git a/content/common/gpu/client/ipc/chrome/chrome_gpu_video_decode_accelerator_host_ipc_transport.h b/content/common/gpu/client/ipc/chrome/chrome_gpu_video_decode_accelerator_host_ipc_transport.h
new file mode 100644
index 0000000000000000000000000000000000000000..ca492dd93682e4c34dfce57d5b3da59d23554738
--- /dev/null
+++ b/content/common/gpu/client/ipc/chrome/chrome_gpu_video_decode_accelerator_host_ipc_transport.h
@@ -0,0 +1,85 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CONTENT_COMMON_GPU_CLIENT_IPC_CHROME_CHROME_GPU_VIDEO_DECODE_ACCELERATOR_HOST_IPC_TRANSPORT_H_
+#define CONTENT_COMMON_GPU_CLIENT_IPC_CHROME_CHROME_GPU_VIDEO_DECODE_ACCELERATOR_HOST_IPC_TRANSPORT_H_
+
+#include "content/common/gpu/client/ipc/gpu_video_decode_accelerator_host_ipc_transport.h"
+
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "ipc/ipc_listener.h"
+#include "ipc/ipc_sender.h"
+#include "media/video/video_decode_accelerator.h"
+
+namespace content {
+
+class ChromeGpuChannelHostIPCTransport;
+
+class ChromeGpuVideoDecodeAcceleratorHostIPCTransport
+    : public GpuVideoDecodeAcceleratorHostIPCTransport,
+      public IPC::Listener,
+      public IPC::Sender {
+ public:
+  static scoped_ptr<GpuVideoDecodeAcceleratorHostIPCTransport> Create();
+
+  ~ChromeGpuVideoDecodeAcceleratorHostIPCTransport() override;
+
+  void BindToService(ChromeGpuChannelHostIPCTransport* channel_transport);
+
+  base::WeakPtr<ChromeGpuVideoDecodeAcceleratorHostIPCTransport> AsWeakPtr();
+
+  int32_t route_id() const { return route_id_; }
+
+ private:
+  ChromeGpuVideoDecodeAcceleratorHostIPCTransport();
+
+  // IPC::Listener implementation.
+  void OnChannelError() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+  // IPC::Sender implementation:
+  bool Send(IPC::Message* message) override;
+
+  void PostNotifyError(media::VideoDecodeAccelerator::Error error);
+
+  // GpuVideoDecodeAcceleratorHostIPCTransport implementation
+  bool AssignPictureBuffers(const std::vector<int32_t>& buffer_ids,
+                            const std::vector<uint32_t>& texture_ids) override;
+  bool Decode(const VideoDecodeParams& params) override;
+  bool Destroy() override;
+  bool Flush() override;
+  bool Reset() override;
+  bool ReusePictureBuffer(int32_t picture_buffer_id) override;
+  bool SetCdm(int cdm_id) override;
+  void SetClient(
+      GpuVideoDecodeAcceleratorHostIPCTransport::Client* client) override;
+
+  // Message handlers.
+  void OnCdmAttached(bool success);
+  void OnBitstreamBufferProcessed(int32_t bitstream_buffer_id);
+  void OnProvidePictureBuffer(uint32_t num_requested_buffers,
+                              const gfx::Size& dimensions,
+                              uint32_t texture_target);
+  void OnDismissPictureBuffer(int32_t picture_buffer_id);
+  void OnPictureReady(int32_t picture_buffer_id,
+                      int32_t bitstream_buffer_id,
+                      const gfx::Rect& visible_rect,
+                      bool allow_overlay);
+  void OnFlushDone();
+  void OnResetDone();
+  void OnNotifyError(uint32_t error);
+
+  ChromeGpuChannelHostIPCTransport* channel_transport_;
+  int route_id_;
+  GpuVideoDecodeAcceleratorHostIPCTransport::Client* client_;
+  base::WeakPtrFactory<ChromeGpuVideoDecodeAcceleratorHostIPCTransport>
+      weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeGpuVideoDecodeAcceleratorHostIPCTransport);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_CLIENT_IPC_CHROME_CHROME_GPU_VIDEO_DECODE_ACCELERATOR_HOST_IPC_TRANSPORT_H_