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/* Copyright (c) 1997-1999 Miller Puckette.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* The dac~ and adc~ routines.
*/
#include "m_pd.h"
#include "s_stuff.h"
/* ----------------------------- dac~ --------------------------- */
static t_class *dac_class;
typedef struct _dac
{
t_object x_obj;
t_int x_n;
t_int *x_vec;
t_float x_f;
} t_dac;
static void *dac_new(t_symbol *s, int argc, t_atom *argv)
{
t_dac *x = (t_dac *)pd_new(dac_class);
t_atom defarg[2], *ap;
int i;
if (!argc)
{
argv = defarg;
argc = 2;
SETFLOAT(&defarg[0], 1);
SETFLOAT(&defarg[1], 2);
}
x->x_n = argc;
x->x_vec = (t_int *)getbytes(argc * sizeof(*x->x_vec));
for (i = 0; i < argc; i++)
x->x_vec[i] = atom_getintarg(i, argc, argv);
for (i = 1; i < argc; i++)
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
x->x_f = 0;
return (x);
}
static void dac_dsp(t_dac *x, t_signal **sp)
{
t_int i, *ip;
t_signal **sp2;
for (i = x->x_n, ip = x->x_vec, sp2 = sp; i--; ip++, sp2++)
{
int ch = *ip - 1;
if ((*sp2)->s_n != DEFDACBLKSIZE)
error("dac~: bad vector size");
else if (ch >= 0 && ch < sys_get_outchannels())
dsp_add(plus_perform, 4, sys_soundout + DEFDACBLKSIZE*ch,
(*sp2)->s_vec, sys_soundout + DEFDACBLKSIZE*ch, DEFDACBLKSIZE);
}
}
static void dac_free(t_dac *x)
{
freebytes(x->x_vec, x->x_n * sizeof(*x->x_vec));
}
void dac_tilde_setup(void)
{
dac_class = class_new(gensym("dac~"), (t_newmethod)dac_new,
(t_method)dac_free, sizeof(t_dac), 0, A_GIMME, 0);
CLASS_MAINSIGNALIN(dac_class, t_dac, x_f);
class_addmethod(dac_class, (t_method)dac_dsp, gensym("dsp"), A_CANT, 0);
class_sethelpsymbol(dac_class, gensym("adc~_dac~"));
}
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