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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" |
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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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