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// 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_
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