Cast: IPC glue between cast library transport and encoders.

chrome/renderer/media/cast_ipc_dispatcher.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.

[acolwell GONE FROM CHROMIUM, 2014/02/13 19:28:58]

nit: s/(c) 2013/2014/

[hubbe, 2014/02/14 00:03:24]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_RENDERER_MEDIA_CAST_IPC_DISPATCHER_H_
+#define CHROME_RENDERER_MEDIA_CAST_IPC_DISPATCHER_H_
+
+#include "base/callback.h"
+#include "base/id_map.h"
+#include "ipc/ipc_channel_proxy.h"
+#include "media/cast/cast_sender.h"
+#include "media/cast/transport/cast_transport_sender.h"
+
+class CastTransportSenderIPC;
+
+// This dispatcher listens to incoming IPC messages and sends
+// the call to the correct CastTransportSenderIPC instance.
+class CastIPCDispatcher : public IPC::ChannelProxy::MessageFilter {
+ public:
+  explicit CastIPCDispatcher(
+      const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
+
+  static CastIPCDispatcher* Get();
+  void Send(IPC::Message* message);
+  int32 AddSender(CastTransportSenderIPC* sender);
+  void RemoveSender(int32 channel_id);
+
+  // IPC::ChannelProxy::MessageFilter implementation
+  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
+  virtual void OnFilterAdded(IPC::Channel* channel) OVERRIDE;
+  virtual void OnFilterRemoved() OVERRIDE;
+  virtual void OnChannelClosing() OVERRIDE;
+
+ protected:
+  virtual ~CastIPCDispatcher();
+
+ private:
+  void OnReceivedPacket(int32 channel_id, const media::cast::Packet& packet);
+  void OnNotifyStatusChange(
+      int32 channel_id,
+      media::cast::transport::CastTransportStatus status);
+  void OnRtpStatistics(
+      int32 channel_id,
+      bool audio,
+      const media::cast::transport::RtcpSenderInfo& sender_info,
+      base::TimeTicks time_sent,
+      uint32 rtp_timestamp);
+
+  static CastIPCDispatcher* global_instance_;
+
+  // IPC channel for Send(); must only be accesed on |io_message_loop_|.
+  IPC::Channel* channel_;
+
+  // Message loop on which IPC calls are driven.
+  const scoped_refptr<base::MessageLoopProxy> io_message_loop_;
+
+  // A map of stream ids to delegates; must only be accessed on
+  // |io_message_loop_|.
+  IDMap<CastTransportSenderIPC> id_map_;
+  DISALLOW_COPY_AND_ASSIGN(CastIPCDispatcher);
+};
+
+#endif  // CHROME_RENDERER_MEDIA_CAST_IPC_DISPATCHER_H_