int sporth_delay(sporth_stack *stack, void *ud)
{
plumber_data *pd = ud;
SPFLOAT input;
SPFLOAT out;
SPFLOAT time;
SPFLOAT feedback;
sp_delay *delay;
switch(pd->mode) {
case PLUMBER_CREATE:
#ifdef DEBUG_MODE
fprintf(stderr, "delay: Creating\n");
#endif
sp_delay_create(&delay);
plumber_add_ugen(pd, SPORTH_DELAY, delay);
if(sporth_check_args(stack, "fff") != SPORTH_OK) {
fprintf(stderr,"Not enough arguments for delay\n");
stack->error++;
return PLUMBER_NOTOK;
}
time = sporth_stack_pop_float(stack);
feedback = sporth_stack_pop_float(stack);
input = sporth_stack_pop_float(stack);
sporth_stack_push_float(stack, 0);
break;
case PLUMBER_INIT:
#ifdef DEBUG_MODE
fprintf(stderr, "delay: Initialising\n");
#endif
time = sporth_stack_pop_float(stack);
feedback = sporth_stack_pop_float(stack);
input = sporth_stack_pop_float(stack);
delay = pd->last->ud;
sp_delay_init(pd->sp, delay, time);
sporth_stack_push_float(stack, 0);
break;
case PLUMBER_COMPUTE:
time = sporth_stack_pop_float(stack);
feedback = sporth_stack_pop_float(stack);
input = sporth_stack_pop_float(stack);
delay = pd->last->ud;
delay->feedback = feedback;
sp_delay_compute(pd->sp, delay, &input, &out);
sporth_stack_push_float(stack, out);
break;
case PLUMBER_DESTROY:
delay = pd->last->ud;
sp_delay_destroy(&delay);
break;
default:
fprintf(stderr, "delay: Unknown mode!\n");
break;
}
return PLUMBER_OK;
}
int main() {
srand(1234567);
UserData ud;
sp_data *sp;
sp_create(&sp);
sp_delay_create(&ud.delay);
sp_osc_create(&ud.osc);
sp_ftbl_create(sp, &ud.ft, 2048);
sp_metro_create(&ud.met);
sp_tenv_create(&ud.tenv);
sp_delay_init(sp, ud.delay, 0.75 * 0.5);
ud.delay->feedback = 0.5;
sp_gen_sine(sp, ud.ft);
sp_osc_init(sp, ud.osc, ud.ft, 0);
ud.osc->amp = 0.5;
sp_metro_init(sp, ud.met);
ud.met->freq = 1;
sp_tenv_init(sp, ud.tenv);
ud.tenv->atk = 0.005;
ud.tenv->hold = 0.1;
ud.tenv->rel = 0.1;
sp->len = 44100 * 5;
sp_process(sp, &ud, process);
sp_delay_destroy(&ud.delay);
sp_ftbl_destroy(&ud.ft);
sp_osc_destroy(&ud.osc);
sp_metro_destroy(&ud.met);
sp_tenv_destroy(&ud.tenv);
sp_destroy(&sp);
return 0;
}
