shithub: soundpipe

ref: 0df3039072e1eb47d710348117063fa45cfaf2dd
dir: /modules/random.c/

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/* This code is placed in the public domain. */

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

int sp_random_create(sp_random **p)
{
    *p = malloc(sizeof(sp_random));
    return SP_OK;
}

int sp_random_destroy(sp_random **p)
{
    free(*p);
    return SP_OK;
}

int sp_random_init(sp_data *sp, sp_random *p)
{
    USED(sp);

    p->min = -1;
    p->max = 1;
    return SP_OK;
}

int sp_random_compute(sp_data *sp, sp_random *p, SPFLOAT *in, SPFLOAT *out)
{
    USED(sp, in);

    /* Send the signal's input to the output */
    SPFLOAT rnd = ((sp_rand(sp) % RAND_MAX) / (RAND_MAX * 1.0));
    rnd *= (p->max - p->min);
    rnd += p->min;
    *out = rnd;
    return SP_OK;
}