Decouple Media Service

content/common/gpu/media/media_channel.h

+// 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_MEDIA_MEDIA_CHANNEL_H_
+#define CONTENT_COMMON_GPU_MEDIA_MEDIA_CHANNEL_H_
+
+#include "content/common/gpu/media/gpu_jpeg_decode_accelerator.h"
+#include "ipc/ipc_listener.h"
+#include "ipc/ipc_sender.h"
+#include "media/video/video_decode_accelerator.h"
+
+namespace content {
+
+namespace {
+class DispatchHelper;
+}
+
+class GpuChannel;
+class GpuCommandBufferStub;
+struct CreateVideoEncoderParams;
+
+class MediaChannel : public IPC::Listener, public IPC::Sender {
+ public:
+  explicit MediaChannel(GpuChannel* channel);
+  ~MediaChannel() override;
+
+  // IPC::Sender implementation:
+  bool Send(IPC::Message* msg) override;
+
+ private:
+  friend class DispatchHelper;
+
+  // IPC::Listener implementation:
+  bool OnMessageReceived(const IPC::Message& message) override;
+
+  // Message handlers.
+  void OnCreateJpegDecoder(int32_t route_id, IPC::Message* reply_msg);
+  void OnCreateVideoDecoder(int32_t command_buffer_route_id,
+                            const media::VideoDecodeAccelerator::Config& config,
+                            int32_t route_id,
+                            IPC::Message* reply_message);
+  void OnCreateVideoEncoder(int command_buffer_route_id,
+                            const CreateVideoEncoderParams& params,
+                            IPC::Message* reply_message);
+
+  GpuChannel* const channel_;
+  scoped_ptr<GpuJpegDecodeAccelerator> jpeg_decoder_;
+  DISALLOW_COPY_AND_ASSIGN(MediaChannel);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_COMMON_GPU_MEDIA_MEDIA_CHANNEL_H_