/*************************************************************************/
/*  audio_effect_reverb.h                                                */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
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/*************************************************************************/

#ifndef AUDIO_EFFECT_REVERB_H
#define AUDIO_EFFECT_REVERB_H

#include "servers/audio/audio_effect.h"
#include "servers/audio/effects/reverb_filter.h"

class AudioEffectReverb;

class AudioEffectReverbInstance : public AudioEffectInstance {
	GDCLASS(AudioEffectReverbInstance, AudioEffectInstance);

	Ref<AudioEffectReverb> base;

	float tmp_src[Reverb::INPUT_BUFFER_MAX_SIZE];
	float tmp_dst[Reverb::INPUT_BUFFER_MAX_SIZE];

	friend class AudioEffectReverb;

	Reverb reverb[2];

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

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

	friend class AudioEffectReverbInstance;

	float predelay;
	float predelay_fb;
	float hpf;
	float room_size;
	float damping;
	float spread;
	float dry;
	float wet;

protected:
	static void _bind_methods();

public:
	void set_predelay_msec(float p_msec);
	void set_predelay_feedback(float p_feedback);
	void set_room_size(float p_size);
	void set_damping(float p_damping);
	void set_spread(float p_spread);
	void set_dry(float p_dry);
	void set_wet(float p_wet);
	void set_hpf(float p_hpf);

	float get_predelay_msec() const;
	float get_predelay_feedback() const;
	float get_room_size() const;
	float get_damping() const;
	float get_spread() const;
	float get_dry() const;
	float get_wet() const;
	float get_hpf() const;

	Ref<AudioEffectInstance> instantiate() override;

	AudioEffectReverb();
};

#endif // AUDIO_EFFECT_REVERB_H