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// Copyright (c) 2012 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_FAKE_AUDIO_OUTPUT_STREAM_H_
#define MEDIA_AUDIO_FAKE_AUDIO_OUTOUT_STREAM_H_
#include "base/memory/scoped_ptr.h"
#include "media/audio/audio_io.h"
#include "media/audio/audio_parameters.h"
#include "media/audio/fake_audio_consumer.h"
namespace media {
class AudioManagerBase;
// A fake implementation of AudioOutputStream. Used for testing and when a real
// audio output device is unavailable or refusing output (e.g. remote desktop).
// Callbacks are driven on the AudioManager's message loop.
class MEDIA_EXPORT FakeAudioOutputStream : public AudioOutputStream {
public:
static AudioOutputStream* MakeFakeStream(AudioManagerBase* manager,
const AudioParameters& params);
// AudioOutputStream implementation.
virtual bool Open() OVERRIDE;
virtual void Start(AudioSourceCallback* callback) OVERRIDE;
virtual void Stop() OVERRIDE;
virtual void SetVolume(double volume) OVERRIDE;
virtual void GetVolume(double* volume) OVERRIDE;
virtual void Close() OVERRIDE;
private:
FakeAudioOutputStream(AudioManagerBase* manager,
const AudioParameters& params);
virtual ~FakeAudioOutputStream();
// Task that periodically calls OnMoreData() to consume audio data.
void CallOnMoreData(AudioBus* audio_bus);
AudioManagerBase* audio_manager_;
AudioSourceCallback* callback_;
FakeAudioConsumer fake_consumer_;
DISALLOW_COPY_AND_ASSIGN(FakeAudioOutputStream);
};
} // namespace media
#endif // MEDIA_AUDIO_FAKE_AUDIO_OUTPUT_STREAM_H_
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