mock_audio_manager.h revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_
6#define MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_
7
8#include "media/audio/audio_manager.h"
9
10namespace media {
11
12// This class is a simple mock around AudioManager, used exclusively for tests,
13// which has the following purposes:
14// 1) Avoids to use the actual (system and platform dependent) AudioManager.
15//    Some bots does not have input devices, thus using the actual AudioManager
16//    would causing failures on classes which expect that.
17// 2) Allows the mock audio events to be dispatched on an arbitrary thread,
18//    rather than forcing them on the audio thread, easing their handling in
19//    browser tests (Note: sharing a thread can cause deadlocks on production
20//    classes if WaitableEvents or any other form of lock is used for
21//    synchronization purposes).
22class MockAudioManager : public media::AudioManager {
23 public:
24  explicit MockAudioManager(base::MessageLoopProxy* message_loop_proxy);
25
26  virtual bool HasAudioOutputDevices() OVERRIDE;
27
28  virtual bool HasAudioInputDevices() OVERRIDE;
29
30  virtual string16 GetAudioInputDeviceModel() OVERRIDE;
31
32  virtual void ShowAudioInputSettings() OVERRIDE;
33
34  virtual void GetAudioInputDeviceNames(
35      media::AudioDeviceNames* device_names) OVERRIDE;
36
37  virtual media::AudioOutputStream* MakeAudioOutputStream(
38      const media::AudioParameters& params) OVERRIDE;
39
40  virtual media::AudioOutputStream* MakeAudioOutputStreamProxy(
41      const media::AudioParameters& params) OVERRIDE;
42
43  virtual media::AudioInputStream* MakeAudioInputStream(
44      const media::AudioParameters& params,
45      const std::string& device_id) OVERRIDE;
46
47  virtual bool IsRecordingInProcess() OVERRIDE;
48
49  virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() OVERRIDE;
50
51  virtual void AddOutputDeviceChangeListener(
52      AudioDeviceListener* listener) OVERRIDE;
53  virtual void RemoveOutputDeviceChangeListener(
54      AudioDeviceListener* listener) OVERRIDE;
55
56  virtual AudioParameters GetDefaultOutputStreamParameters() OVERRIDE;
57  virtual AudioParameters GetInputStreamParameters(
58      const std::string& device_id) OVERRIDE;
59
60 private:
61  virtual ~MockAudioManager();
62
63  scoped_refptr<base::MessageLoopProxy> message_loop_proxy_;
64
65  DISALLOW_COPY_AND_ASSIGN(MockAudioManager);
66};
67
68}  // namespace media.
69
70#endif  // MEDIA_AUDIO_MOCK_AUDIO_MANAGER_H_
71