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| 1 // Copyright (c) 2010 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2010 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_INPUT_CONTROLLER_H_ | 5 #ifndef MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_ | 
| 6 #define MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_ | 6 #define MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_ | 
| 7 | 7 | 
| 8 #include "base/lock.h" |  | 
| 9 #include "base/ref_counted.h" | 8 #include "base/ref_counted.h" | 
| 10 #include "base/scoped_ptr.h" | 9 #include "base/scoped_ptr.h" | 
|  | 10 #include "base/synchronization/lock.h" | 
| 11 #include "base/threading/thread.h" | 11 #include "base/threading/thread.h" | 
| 12 #include "media/audio/audio_io.h" | 12 #include "media/audio/audio_io.h" | 
| 13 #include "media/audio/audio_manager.h" | 13 #include "media/audio/audio_manager.h" | 
| 14 | 14 | 
| 15 // An AudioInputController controls an AudioInputStream and records data | 15 // An AudioInputController controls an AudioInputStream and records data | 
| 16 // from this input stream. It has an important function that it executes | 16 // from this input stream. It has an important function that it executes | 
| 17 // audio operations like record, pause, stop, etc. on a separate thread. | 17 // audio operations like record, pause, stop, etc. on a separate thread. | 
| 18 // | 18 // | 
| 19 // All the public methods of AudioInputController are non-blocking except | 19 // All the public methods of AudioInputController are non-blocking except | 
| 20 // close, the actual operations are performed on the audio input controller | 20 // close, the actual operations are performed on the audio input controller | 
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| 114   void DoReportError(int code); | 114   void DoReportError(int code); | 
| 115 | 115 | 
| 116   EventHandler* handler_; | 116   EventHandler* handler_; | 
| 117   AudioInputStream* stream_; | 117   AudioInputStream* stream_; | 
| 118 | 118 | 
| 119   // |state_| is written on the audio input controller thread and is read on | 119   // |state_| is written on the audio input controller thread and is read on | 
| 120   // the hardware audio thread. These operations need to be locked. But lock | 120   // the hardware audio thread. These operations need to be locked. But lock | 
| 121   // is not required for reading on the audio input controller thread. | 121   // is not required for reading on the audio input controller thread. | 
| 122   State state_; | 122   State state_; | 
| 123 | 123 | 
| 124   Lock lock_; | 124   base::Lock lock_; | 
| 125 | 125 | 
| 126   // The audio input controller thread that this object runs on. | 126   // The audio input controller thread that this object runs on. | 
| 127   base::Thread thread_; | 127   base::Thread thread_; | 
| 128 | 128 | 
| 129   static Factory* factory_; | 129   static Factory* factory_; | 
| 130 | 130 | 
| 131   DISALLOW_COPY_AND_ASSIGN(AudioInputController); | 131   DISALLOW_COPY_AND_ASSIGN(AudioInputController); | 
| 132 }; | 132 }; | 
| 133 | 133 | 
| 134 }  // namespace media | 134 }  // namespace media | 
| 135 | 135 | 
| 136 #endif  //  MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_ | 136 #endif  //  MEDIA_AUDIO_AUDIO_INPUT_CONTROLLER_H_ | 
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