randi
Files: randi.h, randi.c

Line segments between random values within a range

Functions

sp_randi_create(sp_randi **randi)
sp_randi_init(sp_data *sp, sp_randi *randi)
sp_randi_compute(sp_data *sp, sp_randi *randi, SPFLOAT *dummy, SPFLOAT *out)
sp_randi_destroy(sp_randi **randi)

Optional Parameters

min: Minimum value
(Default value: 0)
max: Maximum value
(Default value: 1)
cps: Frequency to change values.
(Default value: 3)
mode: Randi mode (not yet implemented yet.)
(Default value: 0)

Outputs

out: Signal out.

Example Code

#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include "soundpipe.h"

typedef struct {
    sp_osc *osc;
    sp_ftbl *ft; 
    sp_randi *rnd;
} UserData;

void write_osc(sp_data *sp, void *udata) {
    UserData *ud = udata;
    SPFLOAT freq;
    sp_randi_compute(sp, ud->rnd, NULL, &freq);
    ud->osc->freq = freq;
    sp_osc_compute(sp, ud->osc, NULL, &sp->out[0]);
}

int main() {
    UserData ud;
    sp_data *sp;
    sp_create(&sp);
    sp_srand(sp, 12345);
    sp_ftbl_create(sp, &ud.ft, 1024);
    sp_osc_create(&ud.osc);
    sp_randi_create(&ud.rnd);

    sp_gen_sine(sp, ud.ft);
    sp_osc_init(sp, ud.osc, ud.ft, 0);
    sp_randi_init(sp, ud.rnd);
    
    ud.rnd->min = 300;  
    ud.rnd->max = 3000;  

    sp->len = 44100 * 5;

    sp_process(sp, &ud, write_osc);

    sp_ftbl_destroy(&ud.ft);
    sp_osc_destroy(&ud.osc);
    sp_randi_destroy(&ud.rnd);
    sp_destroy(&sp);
    return 0;
}