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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 #ifndef MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_ | 5 #ifndef MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_ |
| 6 #define MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_ | 6 #define MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 #include <memory> | 9 #include <memory> |
| 10 #include <set> | 10 #include <set> |
| 11 #include <string> |
| 12 #include <utility> |
| 11 | 13 |
| 12 #include "base/atomic_ref_count.h" | 14 #include "base/atomic_ref_count.h" |
| 13 #include "base/callback.h" | 15 #include "base/callback.h" |
| 14 #include "base/macros.h" | 16 #include "base/macros.h" |
| 15 #include "base/memory/ref_counted.h" | 17 #include "base/memory/ref_counted.h" |
| 16 #include "base/threading/thread_checker.h" | 18 #include "base/threading/thread_checker.h" |
| 17 #include "base/timer/timer.h" | 19 #include "base/timer/timer.h" |
| 18 #include "build/build_config.h" | 20 #include "build/build_config.h" |
| 19 #include "media/audio/audio_io.h" | 21 #include "media/audio/audio_io.h" |
| 20 #include "media/audio/audio_manager.h" | 22 #include "media/audio/audio_manager.h" |
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| 156 // | 158 // |
| 157 // Changing the output device causes the controller to go through | 159 // Changing the output device causes the controller to go through |
| 158 // the same state transition back to the current state as a call to | 160 // the same state transition back to the current state as a call to |
| 159 // OnDeviceChange (unless it is currently diverting, see | 161 // OnDeviceChange (unless it is currently diverting, see |
| 160 // Start/StopDiverting below, in which case the state transition | 162 // Start/StopDiverting below, in which case the state transition |
| 161 // will happen when StopDiverting is called). | 163 // will happen when StopDiverting is called). |
| 162 void SwitchOutputDevice(const std::string& output_device_id, | 164 void SwitchOutputDevice(const std::string& output_device_id, |
| 163 const base::Closure& callback); | 165 const base::Closure& callback); |
| 164 | 166 |
| 165 // AudioSourceCallback implementation. | 167 // AudioSourceCallback implementation. |
| 166 int OnMoreData(AudioBus* dest, | 168 int OnMoreData(base::TimeDelta delay, |
| 167 uint32_t total_bytes_delay, | 169 base::TimeTicks delay_timestamp, |
| 168 uint32_t frames_skipped) override; | 170 int prior_frames_skipped, |
| 171 AudioBus* dest) override; |
| 169 void OnError(AudioOutputStream* stream) override; | 172 void OnError(AudioOutputStream* stream) override; |
| 170 | 173 |
| 171 // AudioDeviceListener implementation. When called AudioOutputController will | 174 // AudioDeviceListener implementation. When called AudioOutputController will |
| 172 // shutdown the existing |stream_|, transition to the kRecreating state, | 175 // shutdown the existing |stream_|, transition to the kRecreating state, |
| 173 // create a new stream, and then transition back to an equivalent state prior | 176 // create a new stream, and then transition back to an equivalent state prior |
| 174 // to being called. | 177 // to being called. |
| 175 void OnDeviceChange() override; | 178 void OnDeviceChange() override; |
| 176 | 179 |
| 177 // AudioSourceDiverter implementation. | 180 // AudioSourceDiverter implementation. |
| 178 const AudioParameters& GetAudioParameters() override; | 181 const AudioParameters& GetAudioParameters() override; |
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| 281 // be accessed while |error_lock_| is held. | 284 // be accessed while |error_lock_| is held. |
| 282 bool ignore_errors_during_stop_close_; | 285 bool ignore_errors_during_stop_close_; |
| 283 base::Lock error_lock_; | 286 base::Lock error_lock_; |
| 284 | 287 |
| 285 DISALLOW_COPY_AND_ASSIGN(AudioOutputController); | 288 DISALLOW_COPY_AND_ASSIGN(AudioOutputController); |
| 286 }; | 289 }; |
| 287 | 290 |
| 288 } // namespace media | 291 } // namespace media |
| 289 | 292 |
| 290 #endif // MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_ | 293 #endif // MEDIA_AUDIO_AUDIO_OUTPUT_CONTROLLER_H_ |
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