/* This code is placed in the public domain. */ #include <stdlib.h>#include "soundpipe.h" int sp_switch_create(sp_switch **p){    *p = malloc(sizeof(sp_switch));    return SP_OK;} int sp_switch_destroy(sp_switch **p){    free(*p);    return SP_OK;} int sp_switch_init(sp_data *sp, sp_switch *p){    USED(sp);     p->mode = 0;    return SP_OK;} int sp_switch_compute(sp_data *sp, sp_switch *p, SPFLOAT *trig,    SPFLOAT *in1, SPFLOAT *in2, SPFLOAT *out){    USED(sp);     if (*trig) {        p->mode = p->mode == 0 ? 1 : 0;    }     if(p->mode == 0) {        *out = *in1;    } else {        *out = *in2;    }     return SP_OK;}