Sample code: IPC Transport object for GPU

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

Index: content/common/gpu/client/ipc/chrome/chrome_gpu_video_encode_accelerator_host_ipc_transport.h
diff --git a/content/common/gpu/client/ipc/chrome/chrome_gpu_video_encode_accelerator_host_ipc_transport.h b/content/common/gpu/client/ipc/chrome/chrome_gpu_video_encode_accelerator_host_ipc_transport.h
new file mode 100644
index 0000000000000000000000000000000000000000..2568051a70b50e82b5c2a4316cbdd6b185a33b1c
--- /dev/null
+++ b/content/common/gpu/client/ipc/chrome/chrome_gpu_video_encode_accelerator_host_ipc_transport.h
@@ -0,0 +1,77 @@
+// 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_ENCODE_ACCELERATOR_HOST_IPC_TRANSPORT_H_
+#define CONTENT_COMMON_GPU_CLIENT_IPC_CHROME_CHROME_GPU_VIDEO_ENCODE_ACCELERATOR_HOST_IPC_TRANSPORT_H_
+
+#include "content/common/gpu/client/ipc/gpu_video_encode_accelerator_host_ipc_transport.h"
+
+#include "ipc/ipc_listener.h"
+#include "ipc/ipc_sender.h"
+
+namespace content {
+
+class ChromeGpuChannelHostIPCTransport;
+
+class ChromeGpuVideoEncodeAcceleratorHostIPCTransport
+    : public GpuVideoEncodeAcceleratorHostIPCTransport,
+      public IPC::Listener,
+      public IPC::Sender {
+ public:
+  static scoped_ptr<GpuVideoEncodeAcceleratorHostIPCTransport> Create();
+
+  ~ChromeGpuVideoEncodeAcceleratorHostIPCTransport() override;
+
+  void BindToService(ChromeGpuChannelHostIPCTransport* channel_transport);
+
+  base::WeakPtr<ChromeGpuVideoEncodeAcceleratorHostIPCTransport> AsWeakPtr();
+
+  int32_t route_id() const { return route_id_; }
+
+ private:
+  ChromeGpuVideoEncodeAcceleratorHostIPCTransport();
+
+  // 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::VideoEncodeAccelerator::Error error);
+
+  // GpuVideoEncodeAcceleratorHostIPCTransport implementation:
+  bool Destroy() override;
+  bool Encode(const content::VideoEncodeParams& params) override;
+  bool Encode2(const content::VideoEncodeParams2& params) override;
+  bool RequestEncodingParametersChange(uint32_t bitrate,
+                                       uint32_t framerate) override;
+  void SetClient(
+      GpuVideoEncodeAcceleratorHostIPCTransport::Client* client) override;
+  bool UseOutputBitstreamBuffer(int32_t buffer_id,
+                                const base::SharedMemoryHandle& buffer_handle,
+                                uint32_t buffer_size) override;
+
+  // Message handlers.
+  void OnRequireBitstreamBuffers(uint32_t input_count,
+                                 const gfx::Size& input_coded_size,
+                                 uint32_t output_buffer_size);
+  void OnNotifyInputDone(int32_t frame_id);
+  void OnBitstreamBufferReady(int32_t bitstream_buffer_id,
+                              uint32_t payload_size,
+                              bool key_frame);
+  void OnNotifyError(media::VideoEncodeAccelerator::Error error);
+
+  ChromeGpuChannelHostIPCTransport* channel_transport_;
+  int route_id_;
+  GpuVideoEncodeAcceleratorHostIPCTransport::Client* client_;
+  base::WeakPtrFactory<ChromeGpuVideoEncodeAcceleratorHostIPCTransport>
+      weak_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(ChromeGpuVideoEncodeAcceleratorHostIPCTransport);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_CLIENT_IPC_CHROME_CHROME_GPU_VIDEO_ENCODE_ACCELERATOR_HOST_IPC_TRANSPORT_H_