godot/servers/audio/effects/audio_effect_distortion.h

/*************************************************************************/
/*  audio_effect_distortion.h                                            */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2020 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2020 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:                                             */
/*                                                                       */
/* The above copyright notice and this permission notice shall be        */
/* included in all copies or substantial portions of the Software.       */
/*                                                                       */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
/*************************************************************************/

#ifndef AUDIOEFFECTDISTORTION_H
#define AUDIOEFFECTDISTORTION_H

#include "servers/audio/audio_effect.h"

class AudioEffectDistortion;

class AudioEffectDistortionInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectDistortionInstance, AudioEffectInstance);
	friend class AudioEffectDistortion;
	Ref<AudioEffectDistortion> base;
	float h[2];

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

class AudioEffectDistortion : public AudioEffect {
	GDCLASS(AudioEffectDistortion, AudioEffect);

public:
	enum Mode {
		MODE_CLIP,
		MODE_ATAN,
		MODE_LOFI,
		MODE_OVERDRIVE,
		MODE_WAVESHAPE,
	};

	friend class AudioEffectDistortionInstance;
	Mode mode;
	float pre_gain;
	float post_gain;
	float keep_hf_hz;
	float drive;

protected:
	static void _bind_methods();

public:
	Ref<AudioEffectInstance> instance();

	void set_mode(Mode p_mode);
	Mode get_mode() const;

	void set_pre_gain(float p_pre_gain);
	float get_pre_gain() const;

	void set_keep_hf_hz(float p_keep_hf_hz);
	float get_keep_hf_hz() const;

	void set_drive(float p_drive);
	float get_drive() const;

	void set_post_gain(float p_post_gain);
	float get_post_gain() const;

	AudioEffectDistortion();
};

VARIANT_ENUM_CAST(AudioEffectDistortion::Mode)

#endif // AUDIOEFFECTDISTORTION_H