| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ |
| #define MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/time/time.h" |
| #include "media/base/audio_renderer_sink.h" |
| |
| namespace base { |
| class MessageLoopProxy; |
| } |
| |
| namespace media { |
| class AudioBus; |
| class ClocklessAudioSinkThread; |
| |
| // Implementation of an AudioRendererSink that consumes the audio as fast as |
| // possible. This class does not support multiple Play()/Pause() events. |
| class MEDIA_EXPORT ClocklessAudioSink |
| : NON_EXPORTED_BASE(public AudioRendererSink) { |
| public: |
| ClocklessAudioSink(); |
| |
| // AudioRendererSink implementation. |
| virtual void Initialize(const AudioParameters& params, |
| RenderCallback* callback) OVERRIDE; |
| virtual void Start() OVERRIDE; |
| virtual void Stop() OVERRIDE; |
| virtual void Pause() OVERRIDE; |
| virtual void Play() OVERRIDE; |
| virtual bool SetVolume(double volume) OVERRIDE; |
| |
| // Returns the time taken to consume all the audio. |
| base::TimeDelta render_time() { return playback_time_; } |
| |
| protected: |
| virtual ~ClocklessAudioSink(); |
| |
| private: |
| scoped_ptr<ClocklessAudioSinkThread> thread_; |
| bool initialized_; |
| bool playing_; |
| |
| // Time taken in last set of Render() calls. |
| base::TimeDelta playback_time_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ClocklessAudioSink); |
| }; |
| |
| } // namespace media |
| |
| #endif // MEDIA_AUDIO_CLOCKLESS_AUDIO_SINK_H_ |