1/*
2 * libjingle
3 * Copyright 2011 Google Inc.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 *  1. Redistributions of source code must retain the above copyright notice,
9 *     this list of conditions and the following disclaimer.
10 *  2. Redistributions in binary form must reproduce the above copyright notice,
11 *     this list of conditions and the following disclaimer in the documentation
12 *     and/or other materials provided with the distribution.
13 *  3. The name of the author may not be used to endorse or promote products
14 *     derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28#ifndef TALK_APP_WEBRTC_AUDIOTRACK_H_
29#define TALK_APP_WEBRTC_AUDIOTRACK_H_
30
31#include <string>
32
33#include "talk/app/webrtc/mediastreaminterface.h"
34#include "talk/app/webrtc/mediastreamtrack.h"
35#include "talk/app/webrtc/notifier.h"
36#include "webrtc/base/scoped_ptr.h"
37#include "webrtc/base/scoped_ref_ptr.h"
38#include "webrtc/base/thread_checker.h"
39
40namespace webrtc {
41
42class AudioTrack : public MediaStreamTrack<AudioTrackInterface>,
43                   public ObserverInterface {
44 protected:
45  // Protected ctor to force use of factory method.
46  AudioTrack(const std::string& label,
47             const rtc::scoped_refptr<AudioSourceInterface>& source);
48  ~AudioTrack() override;
49
50 public:
51  static rtc::scoped_refptr<AudioTrack> Create(
52      const std::string& id,
53      const rtc::scoped_refptr<AudioSourceInterface>& source);
54
55 private:
56  // MediaStreamTrack implementation.
57  std::string kind() const override;
58
59  // AudioTrackInterface implementation.
60  AudioSourceInterface* GetSource() const override;
61
62  void AddSink(AudioTrackSinkInterface* sink) override;
63  void RemoveSink(AudioTrackSinkInterface* sink) override;
64
65  // ObserverInterface implementation.
66  void OnChanged() override;
67
68 private:
69  const rtc::scoped_refptr<AudioSourceInterface> audio_source_;
70  rtc::ThreadChecker thread_checker_;
71  RTC_DISALLOW_IMPLICIT_CONSTRUCTORS(AudioTrack);
72};
73
74}  // namespace webrtc
75
76#endif  // TALK_APP_WEBRTC_AUDIOTRACK_H_
77