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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_MAC_AUDIO_MANAGER_MAC_H_
#define MEDIA_AUDIO_MAC_AUDIO_MANAGER_MAC_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/message_loop_proxy.h"
#include "media/audio/audio_manager_base.h"
namespace media {
// Mac OS X 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 AudioManagerMac : public AudioManagerBase {
public:
AudioManagerMac();
// Implementation of AudioManager.
virtual bool HasAudioOutputDevices() OVERRIDE;
virtual bool HasAudioInputDevices() OVERRIDE;
virtual void GetAudioInputDeviceNames(media::AudioDeviceNames* device_names)
OVERRIDE;
// Implementation of AudioManagerBase.
virtual AudioOutputStream* MakeLinearOutputStream(
const AudioParameters& params) OVERRIDE;
virtual AudioOutputStream* MakeLowLatencyOutputStream(
const AudioParameters& params) OVERRIDE;
virtual AudioInputStream* MakeLinearInputStream(
const AudioParameters& params, const std::string& device_id) OVERRIDE;
virtual AudioInputStream* MakeLowLatencyInputStream(
const AudioParameters& params, const std::string& device_id) OVERRIDE;
virtual AudioParameters GetPreferredLowLatencyOutputStreamParameters(
const AudioParameters& input_params) OVERRIDE;
// Called by an internal device change listener. Must be called on
// |creating_message_loop_|.
void OnDeviceChange();
protected:
virtual ~AudioManagerMac();
private:
bool listener_registered_;
scoped_refptr<base::MessageLoopProxy> creating_message_loop_;
DISALLOW_COPY_AND_ASSIGN(AudioManagerMac);
};
} // namespace media
#endif // MEDIA_AUDIO_MAC_AUDIO_MANAGER_MAC_H_
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