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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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/sounds/audio_stream_handler.h" | 5 #include "media/audio/sounds/audio_stream_handler.h" |
6 | 6 |
7 #include <string> | 7 #include <string> |
8 | 8 |
9 #include "base/cancelable_callback.h" | 9 #include "base/cancelable_callback.h" |
10 #include "base/logging.h" | 10 #include "base/logging.h" |
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98 if (stream_) | 98 if (stream_) |
99 stream_->Close(); | 99 stream_->Close(); |
100 stream_ = NULL; | 100 stream_ = NULL; |
101 stop_closure_.Cancel(); | 101 stop_closure_.Cancel(); |
102 } | 102 } |
103 | 103 |
104 private: | 104 private: |
105 // AudioOutputStream::AudioSourceCallback overrides: | 105 // AudioOutputStream::AudioSourceCallback overrides: |
106 // Following methods could be called from *ANY* thread. | 106 // Following methods could be called from *ANY* thread. |
107 virtual int OnMoreData(AudioBus* dest, | 107 virtual int OnMoreData(AudioBus* dest, |
108 uint32 /* total_bytes_delay */) OVERRIDE { | 108 uint32 /* total_bytes_delay */) override { |
109 base::AutoLock al(state_lock_); | 109 base::AutoLock al(state_lock_); |
110 size_t bytes_written = 0; | 110 size_t bytes_written = 0; |
111 | 111 |
112 if (wav_audio_.AtEnd(cursor_) || | 112 if (wav_audio_.AtEnd(cursor_) || |
113 !wav_audio_.CopyTo(dest, cursor_, &bytes_written)) { | 113 !wav_audio_.CopyTo(dest, cursor_, &bytes_written)) { |
114 if (delayed_stop_posted_) | 114 if (delayed_stop_posted_) |
115 return 0; | 115 return 0; |
116 delayed_stop_posted_ = true; | 116 delayed_stop_posted_ = true; |
117 AudioManager::Get()->GetTaskRunner()->PostDelayedTask( | 117 AudioManager::Get()->GetTaskRunner()->PostDelayedTask( |
118 FROM_HERE, | 118 FROM_HERE, |
119 stop_closure_.callback(), | 119 stop_closure_.callback(), |
120 base::TimeDelta::FromMilliseconds(kKeepAliveMs)); | 120 base::TimeDelta::FromMilliseconds(kKeepAliveMs)); |
121 return 0; | 121 return 0; |
122 } | 122 } |
123 cursor_ += bytes_written; | 123 cursor_ += bytes_written; |
124 return dest->frames(); | 124 return dest->frames(); |
125 } | 125 } |
126 | 126 |
127 virtual void OnError(AudioOutputStream* /* stream */) OVERRIDE { | 127 virtual void OnError(AudioOutputStream* /* stream */) override { |
128 LOG(ERROR) << "Error during system sound reproduction."; | 128 LOG(ERROR) << "Error during system sound reproduction."; |
129 } | 129 } |
130 | 130 |
131 void StopStream() { | 131 void StopStream() { |
132 DCHECK(AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); | 132 DCHECK(AudioManager::Get()->GetTaskRunner()->BelongsToCurrentThread()); |
133 | 133 |
134 if (stream_ && started_) { | 134 if (stream_ && started_) { |
135 // Do not hold the |state_lock_| while stopping the output stream. | 135 // Do not hold the |state_lock_| while stopping the output stream. |
136 stream_->Stop(); | 136 stream_->Stop(); |
137 if (g_observer_for_testing) | 137 if (g_observer_for_testing) |
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210 g_observer_for_testing = observer; | 210 g_observer_for_testing = observer; |
211 } | 211 } |
212 | 212 |
213 // static | 213 // static |
214 void AudioStreamHandler::SetAudioSourceForTesting( | 214 void AudioStreamHandler::SetAudioSourceForTesting( |
215 AudioOutputStream::AudioSourceCallback* source) { | 215 AudioOutputStream::AudioSourceCallback* source) { |
216 g_audio_source_for_testing = source; | 216 g_audio_source_for_testing = source; |
217 } | 217 } |
218 | 218 |
219 } // namespace media | 219 } // namespace media |
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