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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 #include "media/audio/mac/audio_output_mac.h" | 5 #include "media/audio/mac/audio_output_mac.h" |
6 | 6 |
7 #include <CoreServices/CoreServices.h> | 7 #include <CoreServices/CoreServices.h> |
8 | 8 |
9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
10 #include "base/debug/trace_event.h" | 10 #include "base/debug/trace_event.h" |
11 #include "base/logging.h" | 11 #include "base/logging.h" |
12 #include "base/memory/scoped_ptr.h" | 12 #include "base/memory/scoped_ptr.h" |
13 #include "media/audio/audio_util.h" | 13 #include "media/audio/audio_util.h" |
14 #include "media/audio/mac/audio_manager_mac.h" | 14 #include "media/audio/mac/audio_manager_mac.h" |
15 | 15 |
| 16 namespace media { |
| 17 |
16 // A custom data structure to store information an AudioQueue buffer. | 18 // A custom data structure to store information an AudioQueue buffer. |
17 struct AudioQueueUserData { | 19 struct AudioQueueUserData { |
18 AudioQueueUserData() : empty_buffer(false) {} | 20 AudioQueueUserData() : empty_buffer(false) {} |
19 bool empty_buffer; | 21 bool empty_buffer; |
20 }; | 22 }; |
21 | 23 |
22 // Overview of operation: | 24 // Overview of operation: |
23 // 1) An object of PCMQueueOutAudioOutputStream is created by the AudioManager | 25 // 1) An object of PCMQueueOutAudioOutputStream is created by the AudioManager |
24 // factory: audio_man->MakeAudioStream(). This just fills some structure. | 26 // factory: audio_man->MakeAudioStream(). This just fills some structure. |
25 // 2) Next some thread will call Open(), at that point the underliying OS | 27 // 2) Next some thread will call Open(), at that point the underliying OS |
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520 void PCMQueueOutAudioOutputStream::SetSource(AudioSourceCallback* source) { | 522 void PCMQueueOutAudioOutputStream::SetSource(AudioSourceCallback* source) { |
521 base::AutoLock lock(source_lock_); | 523 base::AutoLock lock(source_lock_); |
522 source_ = source; | 524 source_ = source; |
523 } | 525 } |
524 | 526 |
525 AudioOutputStream::AudioSourceCallback* | 527 AudioOutputStream::AudioSourceCallback* |
526 PCMQueueOutAudioOutputStream::GetSource() { | 528 PCMQueueOutAudioOutputStream::GetSource() { |
527 base::AutoLock lock(source_lock_); | 529 base::AutoLock lock(source_lock_); |
528 return source_; | 530 return source_; |
529 } | 531 } |
| 532 |
| 533 } // namespace media |
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