Added piping for sending audio packets from host to client.

remoting/host/screen_recorder.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_HOST_SCREEN_RECORDER_H_
 #define REMOTING_HOST_SCREEN_RECORDER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/time.h"
 #include "base/timer.h"
 #include "remoting/base/encoder.h"
 #include "remoting/host/capturer.h"
 #include "remoting/host/capture_scheduler.h"
+#include "remoting/proto/audio.pb.h"
 #include "remoting/proto/video.pb.h"
 
 namespace base {
 class MessageLoopProxy;
 }  // namespace base
 
 namespace remoting {
 
 namespace protocol {
 class ConnectionToClient;
@@ skipping 96 matching lines @@
   void CaptureDoneCallback(scoped_refptr<CaptureData> capture_data);
   void CursorShapeChangedCallback(
       scoped_ptr<protocol::CursorShapeInfo> cursor_data);
   void DoFinishOneRecording();
   void DoInvalidateFullScreen();
 
   // Network thread -----------------------------------------------------------
 
   void DoSendVideoPacket(scoped_ptr<VideoPacket> packet);
 
+  void DoSendAudioPacket(scoped_ptr<AudioPacket> packet);

[Sergey Ulanov, 2012/06/21 17:24:56]

I'm not convinced we should put audio-related code in ScreenRecorder. I think we
will need a separate class that will worry about managing audio (capturing +
encoding), call it e.g. AudioRecorder (though there must be a better name for
it).
For this CL you can just revert all changes in ScreenRecorder - there is nothing
that depends on these changes in this CL anyway.

[kxing, 2012/06/21 18:09:22]

Done.

+
   void DoSendInit(scoped_refptr<protocol::ConnectionToClient> connection,
                   int width, int height);
 
   // Signal network thread to cease activities.
   void DoStopOnNetworkThread(const base::Closure& done_task);
 
   // Callback for VideoStub::ProcessVideoPacket() that is used for
   // each last packet in a frame.
   void VideoFrameSentCallback();
 
+  void AudioSamplesSentCallback();
+
   // Send updated cursor shape to client.
   void DoSendCursorShape(scoped_ptr<protocol::CursorShapeInfo> cursor_shape);
 
   // Encoder thread -----------------------------------------------------------
 
   void DoEncode(scoped_refptr<CaptureData> capture_data);
 
   // Perform stop operations on encode thread.
   void DoStopOnEncodeThread(const base::Closure& done_task);
 
@@ skipping 47 matching lines @@
 
   // An object to schedule capturing.
   CaptureScheduler scheduler_;
 
   DISALLOW_COPY_AND_ASSIGN(ScreenRecorder);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_SCREEN_RECORDER_H_