media: gpu process ipc video decoder implementation

chrome/renderer/gpu_video_service_host.h

+// Copyright (c) 2010 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 CHROME_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
+#define CHROME_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
+
+#include <map>
+
+#include "base/singleton.h"
+#include "chrome/common/gpu_video_common.h"
+#include "chrome/renderer/gpu_channel_host.h"
+#include "chrome/renderer/gpu_video_decoder_host.h"
+#include "ipc/ipc_channel.h"
+#include "media/base/buffers.h"
+#include "media/base/video_frame.h"
+
+class GpuVideoServiceHost : public IPC::Channel::Listener,
+                            public Singleton<GpuVideoServiceHost> {
+ public:
+  // IPC::Channel::Listener.
+  virtual void OnChannelConnected(int32 peer_pid) {}
+  virtual void OnChannelError();
+  virtual void OnMessageReceived(const IPC::Message& message);
+
+  void OnRendererThreadInit(MessageLoop* message_loop);
+  void OnGpuChannelConnected(GpuChannelHost* channel_host,
+                             MessageRouter* router,
+                             IPC::SyncChannel* channel);
+
+  // call at RenderThread. one per renderer process.
+  scoped_refptr<GpuVideoDecoderHost> CreateVideoDecoder(
+      GpuVideoDecoderHost::EventHandler* event_handler);
+  void DestroyVideoDecoder(scoped_refptr<GpuVideoDecoderHost>);
+
+ private:
+  GpuVideoServiceHost() : message_loop_(NULL) {
+    service_info_.service_available_ = 0;
+  }
+
+  scoped_refptr<GpuChannelHost> channel_host_;
+  MessageRouter* router_;
+  GpuVideoServiceInfoParam service_info_;
+  MessageLoop* message_loop_;  // Message loop of render thread.
+
+  friend struct DefaultSingletonTraits<GpuVideoServiceHost>;
+  DISALLOW_COPY_AND_ASSIGN(GpuVideoServiceHost);
+};
+
+#endif  // CHROME_RENDERER_GPU_VIDEO_SERVICE_HOST_H_
+