/* This code is placed in the public domain. */ #include <stdlib.h>#include "soundpipe.h" int sp_clock_create(sp_clock **p){    *p = malloc(sizeof(sp_clock));    return SP_OK;} int sp_clock_destroy(sp_clock **p){    free(*p);    return SP_OK;} int sp_clock_init(sp_data *sp, sp_clock *p){    USED(sp);     p->subdiv = 1.0;    p->bpm = 120;    p->counter = 0;    return SP_OK;} int sp_clock_compute(sp_data *sp, sp_clock *p, SPFLOAT *in, SPFLOAT *out){    *out = 0.0;    if (p->counter == 0 || *in != 0) {        *out = 1.0;        p->counter = (int)(sp->sr * (60.0 / (p->bpm * p->subdiv))) + 1;    }    p->counter--;    return SP_OK;}