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| 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 |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_TRACK_SINK_H_ |
| 6 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_TRACK_SINK_H_ |
| 7 |
| 8 #include <vector> |
| 9 |
| 10 #include "base/logging.h" |
| 11 #include "base/memory/ref_counted.h" |
| 12 #include "base/time/time.h" |
| 13 #include "media/base/audio_parameters.h" |
| 14 #include "third_party/WebKit/public/platform/WebMediaStreamSource.h" |
| 15 |
| 16 namespace media { |
| 17 class AudioBus; |
| 18 } |
| 19 |
| 20 namespace content { |
| 21 |
| 22 class MediaStreamAudioSink; |
| 23 |
| 24 // Interface for reference counted holder of audio stream audio track sink. |
| 25 class MediaStreamAudioTrackSink |
| 26 : public base::RefCountedThreadSafe<MediaStreamAudioTrackSink> { |
| 27 public: |
| 28 // Note: OnData() and OnSetFormat() have the same meaning and semantics as in |
| 29 // content::MediaStreamAudioSink. See comments there for usage info. |
| 30 virtual void OnData(const media::AudioBus& audio_bus, |
| 31 base::TimeTicks estimated_capture_time) = 0; |
| 32 virtual void OnSetFormat(const media::AudioParameters& params) = 0; |
| 33 |
| 34 virtual void OnReadyStateChanged( |
| 35 blink::WebMediaStreamSource::ReadyState state) = 0; |
| 36 |
| 37 virtual void Reset() = 0; |
| 38 |
| 39 virtual bool IsEqual(const MediaStreamAudioSink* other) const = 0; |
| 40 |
| 41 // Wrapper which allows to use std::find_if() when adding and removing |
| 42 // sinks to/from the list. |
| 43 struct WrapsMediaStreamSink { |
| 44 WrapsMediaStreamSink(MediaStreamAudioSink* sink) : sink_(sink) {} |
| 45 bool operator()( |
| 46 const scoped_refptr<MediaStreamAudioTrackSink>& owner) const { |
| 47 return owner->IsEqual(sink_); |
| 48 } |
| 49 MediaStreamAudioSink* sink_; |
| 50 }; |
| 51 |
| 52 protected: |
| 53 virtual ~MediaStreamAudioTrackSink() {} |
| 54 |
| 55 private: |
| 56 friend class base::RefCountedThreadSafe<MediaStreamAudioTrackSink>; |
| 57 }; |
| 58 |
| 59 } // namespace content |
| 60 |
| 61 #endif // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_TRACK_SINK_H_ |
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