godot/servers/audio/effects/audio_effect_stereo_enhance.h

/**************************************************************************/
/*  audio_effect_stereo_enhance.h                                         */
/**************************************************************************/
/*                         This file is part of:                          */
/*                             GODOT ENGINE                               */
/*                        https://godotengine.org                         */
/**************************************************************************/
/* Copyright (c) 2014-present Godot Engine contributors (see AUTHORS.md). */
/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                  */
/*                                                                        */
/* 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 AUDIO_EFFECT_STEREO_ENHANCE_H
#define AUDIO_EFFECT_STEREO_ENHANCE_H

#include "servers/audio/audio_effect.h"

class AudioEffectStereoEnhance;

class AudioEffectStereoEnhanceInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectStereoEnhanceInstance, AudioEffectInstance);
	friend class AudioEffectStereoEnhance;
	Ref<AudioEffectStereoEnhance> base;

	enum {
		MAX_DELAY_MS = 50
	};

	float *delay_ringbuff = nullptr;
	unsigned int ringbuff_pos = 0;
	unsigned int ringbuff_mask = 0;

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

	~AudioEffectStereoEnhanceInstance();
};

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

	friend class AudioEffectStereoEnhanceInstance;
	float volume_db = 0.0f;

	float pan_pullout = 1.0f;
	float time_pullout = 0.0f;
	float surround = 0.0f;

protected:
	static void _bind_methods();

public:
	Ref<AudioEffectInstance> instantiate() override;

	void set_pan_pullout(float p_amount);
	float get_pan_pullout() const;

	void set_time_pullout(float p_amount);
	float get_time_pullout() const;

	void set_surround(float p_amount);
	float get_surround() const;

	AudioEffectStereoEnhance();
};

#endif // AUDIO_EFFECT_STEREO_ENHANCE_H