/*************************************************************************/
/*  audio_effect_limiter.h                                               */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                    http://www.godotengine.org                         */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md)    */
/*                                                                       */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the       */
/* "Software"), to deal in the Software without restriction, including   */
/* without limitation the rights to use, copy, modify, merge, publish,   */
/* distribute, sublicense, and/or sell copies of the Software, and to    */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions:                                             */
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/* included in all copies or substantial portions of the Software.       */
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/*************************************************************************/
#ifndef AUDIO_EFFECT_LIMITER_H
#define AUDIO_EFFECT_LIMITER_H

#include "servers/audio/audio_effect.h"

class AudioEffectLimiter;

class AudioEffectLimiterInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectLimiterInstance, AudioEffectInstance)
	friend class AudioEffectLimiter;
	Ref<AudioEffectLimiter> base;

	float mix_volume_db;

public:
	virtual void process(const AudioFrame *p_src_frames, AudioFrame *p_dst_frames, int p_frame_count);
};

class AudioEffectLimiter : public AudioEffect {
	GDCLASS(AudioEffectLimiter, AudioEffect)

	friend class AudioEffectLimiterInstance;
	float threshold;
	float ceiling;
	float soft_clip;
	float soft_clip_ratio;

protected:
	static void _bind_methods();

public:
	void set_threshold_db(float p_threshold);
	float get_threshold_db() const;

	void set_ceiling_db(float p_ceiling);
	float get_ceiling_db() const;

	void set_soft_clip_db(float p_soft_clip);
	float get_soft_clip_db() const;

	void set_soft_clip_ratio(float p_soft_clip);
	float get_soft_clip_ratio() const;

	Ref<AudioEffectInstance> instance();
	void set_volume_db(float p_volume);
	float get_volume_db() const;

	AudioEffectLimiter();
};

#endif // AUDIO_EFFECT_LIMITER_H