OLD | NEW |
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 // Creates an audio output stream based on the PulseAudio asynchronous API; | 5 // Creates an audio output stream based on the PulseAudio asynchronous API; |
6 // specifically using the pa_threaded_mainloop model. | 6 // specifically using the pa_threaded_mainloop model. |
7 // | 7 // |
8 // If the stream is successfully opened, Close() must be called before the | 8 // If the stream is successfully opened, Close() must be called before the |
9 // stream is deleted as Close() is responsible for ensuring resource cleanup | 9 // stream is deleted as Close() is responsible for ensuring resource cleanup |
10 // occurs. | 10 // occurs. |
11 // | 11 // |
12 // This object is designed so that all AudioOutputStream methods will be called | 12 // This object is designed so that all AudioOutputStream methods will be called |
13 // on the same thread that created the object. | 13 // on the same thread that created the object. |
14 // | 14 // |
15 // WARNING: This object blocks on internal PulseAudio calls in Open() while | 15 // WARNING: This object blocks on internal PulseAudio calls in Open() while |
16 // waiting for PulseAudio's context structure to be ready. It also blocks in | 16 // waiting for PulseAudio's context structure to be ready. It also blocks in |
17 // inside PulseAudio in Start() and repeated during playback, waiting for | 17 // inside PulseAudio in Start() and repeated during playback, waiting for |
18 // PulseAudio write callbacks to occur. | 18 // PulseAudio write callbacks to occur. |
19 | 19 |
20 #ifndef MEDIA_AUDIO_PULSE_PULSE_OUTPUT_H_ | 20 #ifndef MEDIA_AUDIO_PULSE_PULSE_OUTPUT_H_ |
21 #define MEDIA_AUDIO_PULSE_PULSE_OUTPUT_H_ | 21 #define MEDIA_AUDIO_PULSE_PULSE_OUTPUT_H_ |
22 | 22 |
| 23 #include <stddef.h> |
| 24 |
23 #include <string> | 25 #include <string> |
24 | 26 |
25 #include "base/macros.h" | 27 #include "base/macros.h" |
26 #include "base/memory/scoped_ptr.h" | 28 #include "base/memory/scoped_ptr.h" |
27 #include "base/threading/thread_checker.h" | 29 #include "base/threading/thread_checker.h" |
28 #include "media/audio/audio_io.h" | 30 #include "media/audio/audio_io.h" |
29 #include "media/audio/audio_parameters.h" | 31 #include "media/audio/audio_parameters.h" |
30 | 32 |
31 struct pa_context; | 33 struct pa_context; |
32 struct pa_operation; | 34 struct pa_operation; |
(...skipping 60 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
93 scoped_ptr<AudioBus> audio_bus_; | 95 scoped_ptr<AudioBus> audio_bus_; |
94 | 96 |
95 base::ThreadChecker thread_checker_; | 97 base::ThreadChecker thread_checker_; |
96 | 98 |
97 DISALLOW_COPY_AND_ASSIGN(PulseAudioOutputStream); | 99 DISALLOW_COPY_AND_ASSIGN(PulseAudioOutputStream); |
98 }; | 100 }; |
99 | 101 |
100 } // namespace media | 102 } // namespace media |
101 | 103 |
102 #endif // MEDIA_AUDIO_PULSE_PULSE_OUTPUT_H_ | 104 #endif // MEDIA_AUDIO_PULSE_PULSE_OUTPUT_H_ |
OLD | NEW |