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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_H_ | 5 #ifndef MEDIA_AUDIO_AUDIO_MANAGER_H_ |
6 #define MEDIA_AUDIO_AUDIO_MANAGER_H_ | 6 #define MEDIA_AUDIO_AUDIO_MANAGER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/basictypes.h" | 10 #include "base/basictypes.h" |
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110 virtual bool IsRecordingInProcess() = 0; | 110 virtual bool IsRecordingInProcess() = 0; |
111 | 111 |
112 // Returns message loop used for audio IO. | 112 // Returns message loop used for audio IO. |
113 virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() = 0; | 113 virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() = 0; |
114 | 114 |
115 // Allows clients to listen for device state changes; e.g. preferred sample | 115 // Allows clients to listen for device state changes; e.g. preferred sample |
116 // rate or channel layout changes. The typical response to receiving this | 116 // rate or channel layout changes. The typical response to receiving this |
117 // callback is to recreate the stream. | 117 // callback is to recreate the stream. |
118 class AudioDeviceListener { | 118 class AudioDeviceListener { |
119 public: | 119 public: |
120 virtual ~AudioDeviceListener() { } | |
121 | |
122 virtual void OnDeviceChange() = 0; | 120 virtual void OnDeviceChange() = 0; |
123 }; | 121 }; |
124 | 122 |
125 virtual void AddOutputDeviceChangeListener(AudioDeviceListener* listener) = 0; | 123 virtual void AddOutputDeviceChangeListener(AudioDeviceListener* listener) = 0; |
126 virtual void RemoveOutputDeviceChangeListener( | 124 virtual void RemoveOutputDeviceChangeListener( |
127 AudioDeviceListener* listener) = 0; | 125 AudioDeviceListener* listener) = 0; |
128 | 126 |
129 protected: | 127 protected: |
130 AudioManager(); | 128 AudioManager(); |
131 | 129 |
132 private: | 130 private: |
133 DISALLOW_COPY_AND_ASSIGN(AudioManager); | 131 DISALLOW_COPY_AND_ASSIGN(AudioManager); |
134 }; | 132 }; |
135 | 133 |
136 } // namespace media | 134 } // namespace media |
137 | 135 |
138 #endif // MEDIA_AUDIO_AUDIO_MANAGER_H_ | 136 #endif // MEDIA_AUDIO_AUDIO_MANAGER_H_ |
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