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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.
#ifndef MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_
#define MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_
#include <windows.h>
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/gtest_prod_util.h"
#include "media/audio/audio_manager_base.h"
class PCMWaveOutAudioOutputStream;
// Windows implementation of the AudioManager singleton. This class is internal
// to the audio output and only internal users can call methods not exposed by
// the AudioManager class.
class MEDIA_EXPORT AudioManagerWin : public AudioManagerBase {
public:
AudioManagerWin();
// Implementation of AudioManager.
virtual bool HasAudioOutputDevices() OVERRIDE;
virtual bool HasAudioInputDevices() OVERRIDE;
virtual AudioOutputStream* MakeAudioOutputStream(
const AudioParameters& params) OVERRIDE;
virtual AudioInputStream* MakeAudioInputStream(
const AudioParameters& params, const std::string& device_id) OVERRIDE;
virtual void MuteAll() OVERRIDE;
virtual void UnMuteAll() OVERRIDE;
virtual string16 GetAudioInputDeviceModel() OVERRIDE;
virtual bool CanShowAudioInputSettings() OVERRIDE;
virtual void ShowAudioInputSettings() OVERRIDE;
virtual void GetAudioInputDeviceNames(media::AudioDeviceNames* device_names)
OVERRIDE;
// Windows-only methods to free a stream created in MakeAudioStream. These
// are called internally by the audio stream when it has been closed.
void ReleaseOutputStream(AudioOutputStream* stream);
// Called internally by the audio stream when it has been closed.
void ReleaseInputStream(AudioInputStream* stream);
protected:
virtual ~AudioManagerWin();
private:
enum EnumerationType {
kUninitializedEnumeration = 0,
kMMDeviceEnumeration,
kWaveEnumeration,
};
// Allow unit test to modify the utilized enumeration API.
friend class AudioInputDeviceTest;
EnumerationType enumeration_type_;
EnumerationType enumeration_type() { return enumeration_type_; }
void SetEnumerationType(EnumerationType type) {
enumeration_type_ = type;
}
// Number of currently open output streams.
int num_output_streams_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerWin);
};
#endif // MEDIA_AUDIO_WIN_AUDIO_MANAGER_WIN_H_
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