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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" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 #include "base/string16.h" | 12 #include "base/string16.h" |
13 #include "media/audio/audio_device_name.h" | 13 #include "media/audio/audio_device_name.h" |
14 #include "media/audio/audio_parameters.h" | 14 #include "media/audio/audio_parameters.h" |
15 | 15 |
16 class AudioInputStream; | 16 class AudioInputStream; |
17 class AudioOutputStream; | 17 class AudioOutputStream; |
18 class MessageLoop; | 18 class MessageLoop; |
| 19 namespace base { |
| 20 class MessageLoopProxy; |
| 21 } |
19 | 22 |
20 // Manages all audio resources. In particular it owns the AudioOutputStream | 23 // Manages all audio resources. In particular it owns the AudioOutputStream |
21 // objects. Provides some convenience functions that avoid the need to provide | 24 // objects. Provides some convenience functions that avoid the need to provide |
22 // iterators over the existing streams. | 25 // iterators over the existing streams. |
23 // TODO(tommi): Make the manager non-refcounted when it's safe to do so. | 26 // TODO(tommi): Make the manager non-refcounted when it's safe to do so. |
24 // -> Bug 107087. | 27 // -> Bug 107087. |
25 class MEDIA_EXPORT AudioManager | 28 class MEDIA_EXPORT AudioManager |
26 : public base::RefCountedThreadSafe<AudioManager> { | 29 : public base::RefCountedThreadSafe<AudioManager> { |
27 public: | 30 public: |
28 AudioManager(); | 31 AudioManager(); |
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114 | 117 |
115 // Muting continues playback but effectively the volume is set to zero. | 118 // Muting continues playback but effectively the volume is set to zero. |
116 // Un-muting returns the volume to the previous level. | 119 // Un-muting returns the volume to the previous level. |
117 virtual void MuteAll() = 0; | 120 virtual void MuteAll() = 0; |
118 virtual void UnMuteAll() = 0; | 121 virtual void UnMuteAll() = 0; |
119 | 122 |
120 // Used to determine if something else is currently making use of audio input. | 123 // Used to determine if something else is currently making use of audio input. |
121 virtual bool IsRecordingInProcess() = 0; | 124 virtual bool IsRecordingInProcess() = 0; |
122 | 125 |
123 // Returns message loop used for audio IO. | 126 // Returns message loop used for audio IO. |
124 virtual MessageLoop* GetMessageLoop() = 0; | 127 virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() = 0; |
125 | 128 |
126 protected: | 129 protected: |
127 // Called from Create() to initialize the instance. | 130 // Called from Create() to initialize the instance. |
128 virtual void Init() = 0; | 131 virtual void Init() = 0; |
129 | 132 |
130 friend class base::RefCountedThreadSafe<AudioManager>; | 133 friend class base::RefCountedThreadSafe<AudioManager>; |
131 virtual ~AudioManager(); | 134 virtual ~AudioManager(); |
132 }; | 135 }; |
133 | 136 |
134 #endif // MEDIA_AUDIO_AUDIO_MANAGER_H_ | 137 #endif // MEDIA_AUDIO_AUDIO_MANAGER_H_ |
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