/* This code is placed in the public domain. */ #include <stdlib.h>#include "soundpipe.h" int sp_tgate_create(sp_tgate **p){    *p = malloc(sizeof(sp_tgate));    return SP_OK;} int sp_tgate_destroy(sp_tgate **p){    free(*p);    return SP_OK;} int sp_tgate_init(sp_data *sp, sp_tgate *p){    USED(sp);     p->time = 0;    p->timer = 0;    return SP_OK;} int sp_tgate_compute(sp_data *sp, sp_tgate *p, SPFLOAT *in, SPFLOAT *out){    *out = 0;    if(*in != 0) {        p->timer = p->time * sp->sr;    }    if(p->timer != 0) {        *out = 1;        p->timer--;    }    return SP_OK;}