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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_SINK_H_ | 5 #ifndef MEDIA_BASE_AUDIO_RENDERER_SINK_H_ |
6 #define MEDIA_BASE_AUDIO_RENDERER_SINK_H_ | 6 #define MEDIA_BASE_AUDIO_RENDERER_SINK_H_ |
7 | 7 |
8 #include <stdint.h> | 8 #include <stdint.h> |
9 | 9 |
10 #include <string> | 10 #include <string> |
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23 // periodically call Render() on a callback object. | 23 // periodically call Render() on a callback object. |
24 | 24 |
25 class AudioRendererSink | 25 class AudioRendererSink |
26 : public base::RefCountedThreadSafe<media::AudioRendererSink> { | 26 : public base::RefCountedThreadSafe<media::AudioRendererSink> { |
27 public: | 27 public: |
28 class RenderCallback { | 28 class RenderCallback { |
29 public: | 29 public: |
30 // Attempts to completely fill all channels of |dest|, returns actual | 30 // Attempts to completely fill all channels of |dest|, returns actual |
31 // number of frames filled. |frames_skipped| contains the number of frames | 31 // number of frames filled. |frames_skipped| contains the number of frames |
32 // the consumer has skipped, if any. | 32 // the consumer has skipped, if any. |
| 33 // TODO(jameswest): Change to use the same signature as |
| 34 // AudioOutputStream::AudioSourceCallback::OnMoreData. |
33 virtual int Render(AudioBus* dest, | 35 virtual int Render(AudioBus* dest, |
34 uint32_t frames_delayed, | 36 uint32_t frames_delayed, |
35 uint32_t frames_skipped) = 0; | 37 uint32_t frames_skipped) = 0; |
36 | 38 |
37 // Signals an error has occurred. | 39 // Signals an error has occurred. |
38 virtual void OnRenderError() = 0; | 40 virtual void OnRenderError() = 0; |
39 | 41 |
40 protected: | 42 protected: |
41 virtual ~RenderCallback() {} | 43 virtual ~RenderCallback() {} |
42 }; | 44 }; |
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101 const url::Origin& security_origin, | 103 const url::Origin& security_origin, |
102 const OutputDeviceStatusCB& callback) = 0; | 104 const OutputDeviceStatusCB& callback) = 0; |
103 | 105 |
104 protected: | 106 protected: |
105 ~SwitchableAudioRendererSink() override {} | 107 ~SwitchableAudioRendererSink() override {} |
106 }; | 108 }; |
107 | 109 |
108 } // namespace media | 110 } // namespace media |
109 | 111 |
110 #endif // MEDIA_BASE_AUDIO_RENDERER_SINK_H_ | 112 #endif // MEDIA_BASE_AUDIO_RENDERER_SINK_H_ |
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