content/renderer/media/media_stream_audio_sink_owner.h

   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_SINK_OWNER_H_
   6 #define CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_SINK_OWNER_H_
   7
   8 #include <vector>
   9
  10 #include "base/synchronization/lock.h"
  11 #include "content/renderer/media/media_stream_audio_track_sink.h"
  12
  13 namespace content {
  14
  15 class MediaStreamAudioSink;
  16
  17 // Reference counted holder of MediaStreamAudioSink sinks.
  18 class MediaStreamAudioSinkOwner : public MediaStreamAudioTrackSink {
  19  public:
  20   explicit MediaStreamAudioSinkOwner(MediaStreamAudioSink* sink);
  21
  22   // MediaStreamAudioTrackSink implementation.
  23   void OnData(const media::AudioBus& audio_bus,
  24               base::TimeTicks estimated_capture_time) override;
  25   void OnSetFormat(const media::AudioParameters& params) override;
  26   void OnReadyStateChanged(
  27       blink::WebMediaStreamSource::ReadyState state) override;
  28   void Reset() override;
  29   bool IsEqual(const MediaStreamAudioSink* other) const override;
  30
  31  protected:
  32   ~MediaStreamAudioSinkOwner() override {}
  33
  34  private:
  35   mutable base::Lock lock_;
  36
  37   // Raw pointer to the delegate, the client need to call Reset() to set the
  38   // pointer to NULL before the delegate goes away.
  39   MediaStreamAudioSink* delegate_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(MediaStreamAudioSinkOwner);
  42 };
  43
  44 }  // namespace content
  45
  46 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_SINK_OWNER_H_