Added piping for sending audio packets from host to client.

remoting/protocol/connection_to_client.h

 // Copyright (c) 2012 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 REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_
 #define REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_
 
 #include <deque>
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/synchronization/lock.h"
 #include "base/threading/non_thread_safe.h"
+#include "remoting/protocol/audio_writer.h"
 #include "remoting/protocol/session.h"
 #include "remoting/protocol/video_writer.h"
 
 namespace net {
 class IPEndPoint;
 }  // namespace net
 
 namespace remoting {
 namespace protocol {
 
@@ skipping 51 matching lines @@
   // Disconnect the client connection.
   virtual void Disconnect();
 
   // Update the sequence number when received from the client. EventHandler
   // will be called.
   virtual void UpdateSequenceNumber(int64 sequence_number);
 
   // Send encoded update stream data to the viewer.
   virtual VideoStub* video_stub();
 
+  // Send audio stream data to the viewer.
+  virtual AudioStub* audio_stub();
+
   // Send control data to the viewer/client.
   virtual ClientStub* client_stub();
 
   // Stubs for receiving data from the client.
   // These three setters should be called before Init().
   virtual void set_clipboard_stub(ClipboardStub* clipboard_stub);
   virtual void set_host_stub(HostStub* host_stub);
   virtual void set_input_stub(InputStub* input_stub);
 
  private:
   // Callback for protocol Session.
   void OnSessionStateChange(Session::State state);
 
   void OnSessionRouteChange(const std::string& channel_name,
                             const TransportRoute& route);
 
   // Callback for channel initialization.
   void OnChannelInitialized(bool successful);
 
   void NotifyIfChannelsReady();
 
   void Close(ErrorCode error);
 
   // Stops writing in the channels.
   void CloseChannels();
 
+  // Returns true when audio stream is present.
+  bool AudioEnabled();
+
   // Event handler for handling events sent from this object.
   EventHandler* handler_;
 
   // Stubs that are called for incoming messages.
   ClipboardStub* clipboard_stub_;
   HostStub* host_stub_;
   InputStub* input_stub_;
 
   // The libjingle channel used to send and receive data from the remote client.
   scoped_ptr<Session> session_;
 
   scoped_ptr<HostControlDispatcher> control_dispatcher_;
   scoped_ptr<HostEventDispatcher> event_dispatcher_;
   scoped_ptr<VideoWriter> video_writer_;
+  scoped_ptr<AudioWriter> audio_writer_;
 
   DISALLOW_COPY_AND_ASSIGN(ConnectionToClient);
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_CONNECTION_TO_CLIENT_H_