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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 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_MAC_AUDIO_OUTPUT_MAC_H_ | 5 #ifndef MEDIA_AUDIO_MAC_AUDIO_OUTPUT_MAC_H_ |
6 #define MEDIA_AUDIO_MAC_AUDIO_OUTPUT_MAC_H_ | 6 #define MEDIA_AUDIO_MAC_AUDIO_OUTPUT_MAC_H_ |
7 | 7 |
8 #include <AudioToolbox/AudioFormat.h> | 8 #include <AudioToolbox/AudioFormat.h> |
9 #include <AudioToolbox/AudioQueue.h> | 9 #include <AudioToolbox/AudioQueue.h> |
10 #include <AudioUnit/AudioUnit.h> | 10 #include <AudioUnit/AudioUnit.h> |
11 | 11 |
12 #include "base/compiler_specific.h" | 12 #include "base/compiler_specific.h" |
13 #include "base/synchronization/lock.h" | 13 #include "base/synchronization/lock.h" |
14 #include "media/audio/audio_io.h" | 14 #include "media/audio/audio_io.h" |
15 #include "media/audio/audio_parameters.h" | 15 #include "media/audio/audio_parameters.h" |
16 | 16 |
| 17 namespace media { |
| 18 |
17 class AudioManagerMac; | 19 class AudioManagerMac; |
18 | 20 |
19 // Implementation of AudioOuputStream for Mac OS X using the audio queue service | 21 // Implementation of AudioOuputStream for Mac OS X using the audio queue service |
20 // present in OS 10.5 and later. Audioqueue is the successor to the SoundManager | 22 // present in OS 10.5 and later. Audioqueue is the successor to the SoundManager |
21 // services but it is supported in 64 bits. | 23 // services but it is supported in 64 bits. |
22 class PCMQueueOutAudioOutputStream : public AudioOutputStream { | 24 class PCMQueueOutAudioOutputStream : public AudioOutputStream { |
23 public: | 25 public: |
24 // The ctor takes all the usual parameters, plus |manager| which is the | 26 // The ctor takes all the usual parameters, plus |manager| which is the |
25 // the audio manager who is creating this object. | 27 // the audio manager who is creating this object. |
26 PCMQueueOutAudioOutputStream(AudioManagerMac* manager, | 28 PCMQueueOutAudioOutputStream(AudioManagerMac* manager, |
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90 // Number of channels in device layout. | 92 // Number of channels in device layout. |
91 int num_core_channels_; | 93 int num_core_channels_; |
92 // A flag to determine if swizzle is needed from source to device layouts. | 94 // A flag to determine if swizzle is needed from source to device layouts. |
93 bool should_swizzle_; | 95 bool should_swizzle_; |
94 // A flag to determine if downmix is needed from source to device layouts. | 96 // A flag to determine if downmix is needed from source to device layouts. |
95 bool should_down_mix_; | 97 bool should_down_mix_; |
96 | 98 |
97 DISALLOW_COPY_AND_ASSIGN(PCMQueueOutAudioOutputStream); | 99 DISALLOW_COPY_AND_ASSIGN(PCMQueueOutAudioOutputStream); |
98 }; | 100 }; |
99 | 101 |
| 102 } // namespace media |
| 103 |
100 #endif // MEDIA_AUDIO_MAC_AUDIO_OUTPUT_MAC_H_ | 104 #endif // MEDIA_AUDIO_MAC_AUDIO_OUTPUT_MAC_H_ |
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