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   int OnData(const int16* audio_data,
  24              int sample_rate,
  25              int number_of_channels,
  26              int number_of_frames,
  27              const std::vector<int>& channels,
  28              int audio_delay_milliseconds,
  29              int current_volume,
  30              bool need_audio_processing,
  31              bool key_pressed) override;
  32   void OnSetFormat(const media::AudioParameters& params) override;
  33   void OnReadyStateChanged(
  34       blink::WebMediaStreamSource::ReadyState state) override;
  35   void Reset() override;
  36   bool IsEqual(const MediaStreamAudioSink* other) const override;
  37   bool IsEqual(const PeerConnectionAudioSink* other) const override;
  38
  39  protected:
  40   ~MediaStreamAudioSinkOwner() override {}
  41
  42  private:
  43   mutable base::Lock lock_;
  44
  45   // Raw pointer to the delegate, the client need to call Reset() to set the
  46   // pointer to NULL before the delegate goes away.
  47   MediaStreamAudioSink* delegate_;
  48
  49   DISALLOW_COPY_AND_ASSIGN(MediaStreamAudioSinkOwner);
  50 };
  51
  52 }  // namespace content
  53
  54 #endif  // CONTENT_RENDERER_MEDIA_MEDIA_STREAM_AUDIO_SINK_OWNER_H_