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// Copyright (c) 2011 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.
//
// A fake implementation of AudioOutputStream. It is used for testing purpose.
// TODO(hclam): Implement a thread in this fake output stream to simulate an
// audio output stream reading from AudioSourceCallback.
#ifndef MEDIA_AUDIO_FAKE_AUDIO_OUTPUT_STREAM_H_
#define MEDIA_AUDIO_FAKE_AUDIO_OUTOUT_STREAM_H_
#include <vector>
#include "base/memory/scoped_ptr.h"
#include "media/audio/audio_io.h"
#include "media/audio/audio_parameters.h"
class MEDIA_EXPORT FakeAudioOutputStream : public AudioOutputStream {
public:
static AudioOutputStream* MakeFakeStream(const AudioParameters& params);
static FakeAudioOutputStream* GetLastFakeStream();
virtual bool Open();
virtual void Start(AudioSourceCallback* callback);
virtual void Stop();
virtual void SetVolume(double volume);
virtual void GetVolume(double* volume);
virtual void Close();
uint8* buffer() { return buffer_.get(); }
double volume() { return volume_; }
private:
explicit FakeAudioOutputStream(const AudioParameters& params);
virtual ~FakeAudioOutputStream();
static void DestroyLastFakeStream(void* param);
static bool has_created_fake_stream_;
static FakeAudioOutputStream* last_fake_stream_;
double volume_;
AudioSourceCallback* callback_;
scoped_array<uint8> buffer_;
uint32 packet_size_;
bool closed_;
DISALLOW_COPY_AND_ASSIGN(FakeAudioOutputStream);
};
#endif // MEDIA_AUDIO_FAKE_AUDIO_OUTPUT_STREAM_H_
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