/*************************************************************************/
/*  audio_driver_coreaudio.h                                             */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/*************************************************************************/
/* Copyright (c) 2007-2018 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2018 Godot Engine contributors (cf. AUTHORS.md)    */
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/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
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/*************************************************************************/

#ifdef COREAUDIO_ENABLED

#ifndef AUDIO_DRIVER_COREAUDIO_H
#define AUDIO_DRIVER_COREAUDIO_H

#include "servers/audio_server.h"

#include <AudioUnit/AudioUnit.h>
#ifdef OSX_ENABLED
#include <CoreAudio/AudioHardware.h>
#endif

class AudioDriverCoreAudio : public AudioDriver {

	AudioComponentInstance audio_unit;
#ifdef OSX_ENABLED
	AudioObjectPropertyAddress outputDeviceAddress;
#endif
	bool active;
	Mutex *mutex;

	int mix_rate;
	unsigned int channels;
	unsigned int buffer_frames;
	unsigned int buffer_size;

	Vector<int32_t> samples_in;

	static OSStatus output_callback(void *inRefCon,
			AudioUnitRenderActionFlags *ioActionFlags,
			const AudioTimeStamp *inTimeStamp,
			UInt32 inBusNumber, UInt32 inNumberFrames,
			AudioBufferList *ioData);

	Error initDevice();
	Error finishDevice();

public:
	const char *get_name() const {
		return "CoreAudio";
	};

	virtual Error init();
	virtual void start();
	virtual int get_mix_rate() const;
	virtual SpeakerMode get_speaker_mode() const;
	virtual void lock();
	virtual void unlock();
	virtual void finish();

	bool try_lock();
	Error reopen();

	AudioDriverCoreAudio();
	~AudioDriverCoreAudio();
};

#endif

#endif