remoting/host/ipc_audio_capturer.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_IPC_AUDIO_CAPTURER_H_
#define REMOTING_HOST_IPC_AUDIO_CAPTURER_H_

#include "base/basictypes.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "remoting/host/audio_capturer.h"

namespace remoting {

class AudioPacket;
class DesktopSessionProxy;

class IpcAudioCapturer : public AudioCapturer {
 public:
  explicit IpcAudioCapturer(
      scoped_refptr<DesktopSessionProxy> desktop_session_proxy);
  virtual ~IpcAudioCapturer();

  // AudioCapturer interface.
  virtual bool Start(const PacketCapturedCallback& callback) OVERRIDE;
  virtual void Stop() OVERRIDE;
  virtual bool IsStarted() OVERRIDE;

  // Called by DesktopSessionProxy when an audio packet is received.
  void OnAudioPacket(scoped_ptr<AudioPacket> packet);

 private:
  // Invoked when an audio packet was received.
  PacketCapturedCallback callback_;

  // Wraps the IPC channel to the desktop session agent.
  scoped_refptr<DesktopSessionProxy> desktop_session_proxy_;

  // Used to cancel tasks pending on the capturer when it is stopped.
  base::WeakPtrFactory<IpcAudioCapturer> weak_factory_;

  DISALLOW_COPY_AND_ASSIGN(IpcAudioCapturer);
};

}  // namespace remoting

#endif  // REMOTING_HOST_IPC_AUDIO_CAPTURER_H_