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      1 // Copyright 2014 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_WEBRTC_WEBRTC_AUDIO_SINK_ADAPTER_H_
      6 #define CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_AUDIO_SINK_ADAPTER_H_
      7 
      8 #include "base/memory/scoped_ptr.h"
      9 #include "content/public/renderer/media_stream_audio_sink.h"
     10 
     11 namespace webrtc {
     12 class AudioTrackSinkInterface;
     13 }  // namespace webrtc
     14 
     15 namespace content {
     16 
     17 // Adapter to the webrtc::AudioTrackSinkInterface of the audio track.
     18 // This class is used in between the MediaStreamAudioSink and
     19 // webrtc::AudioTrackSinkInterface. It gets data callback via the
     20 // MediaStreamAudioSink::OnData() interface and pass the data to
     21 // webrtc::AudioTrackSinkInterface.
     22 class WebRtcAudioSinkAdapter : public MediaStreamAudioSink {
     23  public:
     24   explicit WebRtcAudioSinkAdapter(
     25       webrtc::AudioTrackSinkInterface* sink);
     26   virtual ~WebRtcAudioSinkAdapter();
     27 
     28   bool IsEqual(const webrtc::AudioTrackSinkInterface* other) const;
     29 
     30  private:
     31   // MediaStreamAudioSink implementation.
     32   virtual void OnData(const int16* audio_data,
     33                       int sample_rate,
     34                       int number_of_channels,
     35                       int number_of_frames) OVERRIDE;
     36   virtual void OnSetFormat(const media::AudioParameters& params) OVERRIDE;
     37 
     38   webrtc::AudioTrackSinkInterface* const sink_;
     39 
     40   DISALLOW_COPY_AND_ASSIGN(WebRtcAudioSinkAdapter);
     41 };
     42 
     43 }  // namespace content
     44 
     45 #endif  // CONTENT_RENDERER_MEDIA_WEBRTC_WEBRTC_AUDIO_SINK_ADAPTER_H_
     46