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#include "zexy.h"
#ifdef NT
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif
/* ------------------------ nop~ ----------------------------- */
/* this will pass trough the signal unchanged except for a delay of 1 block */
static t_class *nop_class;
typedef struct _nop
{
t_object x_obj;
t_float *buf;
int n;
int toggle;
} t_nop;
static t_int *nop_perform(t_int *w)
{
t_float *in = (t_float *)w[1];
t_float *out = (t_float *)w[2];
t_nop *x = (t_nop *)w[3];
int n = x->n;
t_float *rp = x->buf + n * x->toggle, *wp = x->buf + n * (x->toggle ^= 1);
while (n--) {
*wp++ = *in++;
*out++ = *rp++;
}
return (w+4);
}
static void nop_dsp(t_nop *x, t_signal **sp)
{
if (x->n != sp[0]->s_n)
{
freebytes(x->buf, x->n * 2 * sizeof(t_float));
x->buf = (t_float *)getbytes(sizeof(t_float) * 2 * (x->n = sp[0]->s_n));
}
dsp_add(nop_perform, 3, sp[0]->s_vec, sp[1]->s_vec, x);
}
static void helper(t_nop *x)
{
post("%c nop~-object ::\tdo_nothing but delay a signal for 1 block\n"
"\t\t this might be helpful for synchronising signals", HEARTSYMBOL);
}
static void nop_free(t_nop *x)
{
freebytes(x->buf, x->n * sizeof(t_float));
}
static void *nop_new()
{
t_nop *x = (t_nop *)pd_new(nop_class);
outlet_new(&x->x_obj, gensym("signal"));
x->toggle = 0;
x->n = 0;
return (x);
}
void z_nop_setup(void)
{
nop_class = class_new(gensym("nop~"), (t_newmethod)nop_new, (t_method)nop_free,
sizeof(t_nop), 0, A_DEFFLOAT, 0);
class_addmethod(nop_class, nullfn, gensym("signal"), 0);
class_addmethod(nop_class, (t_method)nop_dsp, gensym("dsp"), 0);
class_addmethod(nop_class, (t_method)helper, gensym("help"), 0);
class_sethelpsymbol(nop_class, gensym("zexy/nop~"));
}
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