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delay rds

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This commit is contained in:
KubaPro010
2026-02-15 14:03:10 +01:00
parent c1c97e4883
commit f5505b14e2
4 changed files with 30 additions and 28 deletions
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32
dsp/delay.c
View File

@@ -1,21 +1,25 @@
#include <stdlib.h>
#include <string.h>
#include "delay.h"
void init_delay_line(delay_line_t *delay_line, uint32_t sample_rate) {
delay_line->buffer = malloc(sample_rate * sizeof(float));
memset(delay_line->buffer, 0, sample_rate * sizeof(float));
void init_delay_line(delay_line_t *dl, uint32_t delay_samples) {
dl->delay = delay_samples;
dl->idx = 0;
dl->buffer = calloc(delay_samples, sizeof(float));
}
void set_delay_line(delay_line_t *delay_line, uint32_t new_delay) {
delay_line->delay = new_delay;
float delay_line(delay_line_t *dl, float in) {
float out = dl->buffer[dl->idx]; // read delayed sample
dl->buffer[dl->idx] = in; // write new input
dl->idx++;
if (dl->idx >= dl->delay) dl->idx = 0;
return out;
}
float delay_line(delay_line_t *delay_line, float in) {
delay_line->buffer[delay_line->idx++] = in;
if (delay_line->idx >= delay_line->delay) delay_line->idx = 0;
return delay_line->buffer[delay_line->idx];
}
void exit_delay_line(delay_line_t *delay_line) {
if(delay_line->buffer != NULL) free(delay_line->buffer);
delay_line->buffer = NULL;
void exit_delay_line(delay_line_t *dl) {
if(dl->buffer != NULL) free(dl->buffer);
dl->buffer = NULL;
}

7
dsp/delay.h
View File

@@ -8,7 +8,6 @@ typedef struct delay_line_t {
uint32_t idx;
} delay_line_t;
void init_delay_line(delay_line_t *delay_line, uint32_t sample_rate);
void set_delay_line(delay_line_t *delay_line, uint32_t new_delay);
float delay_line(delay_line_t *delay_line, float in);
void exit_delay_line(delay_line_t *delay_line);
void init_delay_line(delay_line_t *dl, uint32_t delay_samples);
float delay_line(delay_line_t *dl, float in);
void exit_delay_line(delay_line_t *dl);