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// Copyright 2015 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 CHROME_RENDERER_MEDIA_CAST_RECEIVER_AUDIO_VALVE_H_
#define CHROME_RENDERER_MEDIA_CAST_RECEIVER_AUDIO_VALVE_H_
#include "base/synchronization/lock.h"
#include "media/base/audio_capturer_source.h"
namespace media {
class AudioBus;
}
// Forwards calls to |cb| until Stop is called.
// Thread-safe.
// All functions may block depending on contention.
class CastReceiverAudioValve :
public media::AudioCapturerSource::CaptureCallback,
public base::RefCountedThreadSafe<CastReceiverAudioValve> {
public:
explicit CastReceiverAudioValve(
media::AudioCapturerSource::CaptureCallback* cb);
// AudioCapturerSource::CaptureCallback implementation.
void Capture(const media::AudioBus* audio_source,
int audio_delay_milliseconds,
double volume,
bool key_pressed) override;
void OnCaptureError() override;
// When this returns, no more calls will be forwarded to |cb|.
void Stop();
private:
friend class base::RefCountedThreadSafe<CastReceiverAudioValve>;
~CastReceiverAudioValve() override;
media::AudioCapturerSource::CaptureCallback* cb_;
base::Lock lock_;
};
#endif // CHROME_RENDERER_MEDIA_CAST_RECEIVER_AUDIO_VALVE_H_
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