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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_BASE_AUDIO_RENDERER_MIXER_H_ | 5 #ifndef MEDIA_BASE_AUDIO_RENDERER_MIXER_H_ |
| 6 #define MEDIA_BASE_AUDIO_RENDERER_MIXER_H_ | 6 #define MEDIA_BASE_AUDIO_RENDERER_MIXER_H_ |
| 7 | 7 |
| 8 #include <map> | 8 #include <map> |
| 9 | 9 |
| 10 #include "base/synchronization/lock.h" | 10 #include "base/synchronization/lock.h" |
| (...skipping 24 matching lines...) Expand all Loading... |
| 35 void AddErrorCallback(const base::Closure& error_cb); | 35 void AddErrorCallback(const base::Closure& error_cb); |
| 36 void RemoveErrorCallback(const base::Closure& error_cb); | 36 void RemoveErrorCallback(const base::Closure& error_cb); |
| 37 | 37 |
| 38 void set_pause_delay_for_testing(base::TimeDelta delay) { | 38 void set_pause_delay_for_testing(base::TimeDelta delay) { |
| 39 pause_delay_ = delay; | 39 pause_delay_ = delay; |
| 40 } | 40 } |
| 41 | 41 |
| 42 private: | 42 private: |
| 43 // AudioRendererSink::RenderCallback implementation. | 43 // AudioRendererSink::RenderCallback implementation. |
| 44 virtual int Render(AudioBus* audio_bus, | 44 virtual int Render(AudioBus* audio_bus, |
| 45 int audio_delay_milliseconds) OVERRIDE; | 45 int audio_delay_milliseconds) override; |
| 46 virtual void OnRenderError() OVERRIDE; | 46 virtual void OnRenderError() override; |
| 47 | 47 |
| 48 // Output sink for this mixer. | 48 // Output sink for this mixer. |
| 49 scoped_refptr<AudioRendererSink> audio_sink_; | 49 scoped_refptr<AudioRendererSink> audio_sink_; |
| 50 | 50 |
| 51 // ---------------[ All variables below protected by |lock_| ]--------------- | 51 // ---------------[ All variables below protected by |lock_| ]--------------- |
| 52 base::Lock lock_; | 52 base::Lock lock_; |
| 53 | 53 |
| 54 // List of error callbacks used by this mixer. | 54 // List of error callbacks used by this mixer. |
| 55 typedef std::list<base::Closure> ErrorCallbackList; | 55 typedef std::list<base::Closure> ErrorCallbackList; |
| 56 ErrorCallbackList error_callbacks_; | 56 ErrorCallbackList error_callbacks_; |
| 57 | 57 |
| 58 // Handles mixing and resampling between input and output parameters. | 58 // Handles mixing and resampling between input and output parameters. |
| 59 AudioConverter audio_converter_; | 59 AudioConverter audio_converter_; |
| 60 | 60 |
| 61 // Handles physical stream pause when no inputs are playing. For latency | 61 // Handles physical stream pause when no inputs are playing. For latency |
| 62 // reasons we don't want to immediately pause the physical stream. | 62 // reasons we don't want to immediately pause the physical stream. |
| 63 base::TimeDelta pause_delay_; | 63 base::TimeDelta pause_delay_; |
| 64 base::TimeTicks last_play_time_; | 64 base::TimeTicks last_play_time_; |
| 65 bool playing_; | 65 bool playing_; |
| 66 | 66 |
| 67 DISALLOW_COPY_AND_ASSIGN(AudioRendererMixer); | 67 DISALLOW_COPY_AND_ASSIGN(AudioRendererMixer); |
| 68 }; | 68 }; |
| 69 | 69 |
| 70 } // namespace media | 70 } // namespace media |
| 71 | 71 |
| 72 #endif // MEDIA_BASE_AUDIO_RENDERER_MIXER_H_ | 72 #endif // MEDIA_BASE_AUDIO_RENDERER_MIXER_H_ |
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