138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/*************************************************************************/
|
|
/* reverb.h */
|
|
/*************************************************************************/
|
|
/* This file is part of: */
|
|
/* GODOT ENGINE */
|
|
/* https://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: */
|
|
/* */
|
|
/* 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. */
|
|
/*************************************************************************/
|
|
|
|
// Author: Juan Linietsky <reduzio@gmail.com>, (C) 2006
|
|
|
|
#ifndef REVERB_H
|
|
#define REVERB_H
|
|
|
|
#include "audio_frame.h"
|
|
#include "os/memory.h"
|
|
#include "typedefs.h"
|
|
|
|
class Reverb {
|
|
public:
|
|
enum {
|
|
INPUT_BUFFER_MAX_SIZE = 1024,
|
|
|
|
};
|
|
|
|
private:
|
|
enum {
|
|
|
|
MAX_COMBS = 8,
|
|
MAX_ALLPASS = 4,
|
|
MAX_ECHO_MS = 500
|
|
|
|
};
|
|
|
|
static const float comb_tunings[MAX_COMBS];
|
|
static const float allpass_tunings[MAX_ALLPASS];
|
|
|
|
struct Comb {
|
|
|
|
int size;
|
|
float *buffer;
|
|
float feedback;
|
|
float damp; //lowpass
|
|
float damp_h; //history
|
|
int pos;
|
|
int extra_spread_frames;
|
|
|
|
Comb() {
|
|
size = 0;
|
|
buffer = 0;
|
|
feedback = 0;
|
|
damp_h = 0;
|
|
pos = 0;
|
|
}
|
|
};
|
|
|
|
struct AllPass {
|
|
|
|
int size;
|
|
float *buffer;
|
|
int pos;
|
|
int extra_spread_frames;
|
|
AllPass() {
|
|
size = 0;
|
|
buffer = 0;
|
|
pos = 0;
|
|
}
|
|
};
|
|
|
|
Comb comb[MAX_COMBS];
|
|
AllPass allpass[MAX_ALLPASS];
|
|
float *input_buffer;
|
|
float *echo_buffer;
|
|
int echo_buffer_size;
|
|
int echo_buffer_pos;
|
|
|
|
float hpf_h1, hpf_h2;
|
|
|
|
struct Parameters {
|
|
|
|
float room_size;
|
|
float damp;
|
|
float wet;
|
|
float dry;
|
|
float mix_rate;
|
|
float extra_spread_base;
|
|
float extra_spread;
|
|
float predelay;
|
|
float predelay_fb;
|
|
float hpf;
|
|
} params;
|
|
|
|
void configure_buffers();
|
|
void update_parameters();
|
|
void clear_buffers();
|
|
|
|
public:
|
|
void set_room_size(float p_size);
|
|
void set_damp(float p_damp);
|
|
void set_wet(float p_wet);
|
|
void set_dry(float p_dry);
|
|
void set_predelay(float p_predelay); // in ms
|
|
void set_predelay_feedback(float p_predelay_fb); // in ms
|
|
void set_highpass(float p_frq);
|
|
void set_mix_rate(float p_mix_rate);
|
|
void set_extra_spread(float p_spread);
|
|
void set_extra_spread_base(float p_sec);
|
|
|
|
void process(float *p_src, float *p_dst, int p_frames);
|
|
|
|
Reverb();
|
|
|
|
~Reverb();
|
|
};
|
|
|
|
#endif
|