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/* copyleft (c) 2003 forum::für::umläute -- IOhannes m zmölnig @ IEM
* based on d_delay.c from pd:
* 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. */
/* del16read~, del16write~, vd16~ */
#include "iem16_delay.h"
/* ----------------------------- del16write~ ----------------------------- */
/* routine to check that all del16writes/del16reads/vds have same vecsize */
void sigdel16write_checkvecsize(t_sigdel16write *x, int vecsize){
if (x->x_rsortno != ugen_getsortno()) {
x->x_vecsize = vecsize;
x->x_rsortno = ugen_getsortno();
}
else if (vecsize != x->x_vecsize)
pd_error(x, "del16read/del16write/vd vector size mismatch");
}
static void *sigdel16write_new(t_symbol *s, t_floatarg msec){
int nsamps;
t_sigdel16write *x = (t_sigdel16write *)pd_new(sigdel16write_class);
if (!*s->s_name) s = gensym("del16write~");
pd_bind(&x->x_obj.ob_pd, s);
x->x_sym = s;
nsamps = msec * sys_getsr() * (float)(0.001f);
if (nsamps < 1) nsamps = 1;
nsamps += ((- nsamps) & (SAMPBLK - 1));
nsamps += DEFDELVS;
x->x_cspace.c_n = nsamps;
x->x_cspace.c_vec =
(t_iem16_16bit *)getbytes((nsamps + XTRASAMPS) * sizeof(t_iem16_16bit));
x->x_cspace.c_phase = XTRASAMPS;
x->x_sortno = 0;
x->x_vecsize = 0;
x->x_f = 0;
return (x);
}
static t_int *sigdel16write_perform(t_int *w){
t_float *in = (t_float *)(w[1]);
t_del16writectl *c = (t_del16writectl *)(w[2]);
int n = (int)(w[3]);
int phase = c->c_phase, nsamps = c->c_n;
t_iem16_16bit *vp = c->c_vec, *bp = vp + phase, *ep = vp + (c->c_n + XTRASAMPS);
phase += n;
while (n--) {
*bp++ = (*in++*IEM16_SCALE_UP);
if (bp == ep) {
vp[0] = ep[-4];
vp[1] = ep[-3];
vp[2] = ep[-2];
vp[3] = ep[-1];
bp = vp + XTRASAMPS;
phase -= nsamps;
}
}
c->c_phase = phase;
return (w+4);
}
static void sigdel16write_dsp(t_sigdel16write *x, t_signal **sp){
dsp_add(sigdel16write_perform, 3, sp[0]->s_vec, &x->x_cspace, sp[0]->s_n);
x->x_sortno = ugen_getsortno();
sigdel16write_checkvecsize(x, sp[0]->s_n);
}
static void sigdel16write_free(t_sigdel16write *x){
pd_unbind(&x->x_obj.ob_pd, x->x_sym);
freebytes(x->x_cspace.c_vec,
(x->x_cspace.c_n + XTRASAMPS) * sizeof(t_iem16_16bit));
}
static void sigdel16write_setup(void){
sigdel16write_class = class_new(gensym("del16write~"),
(t_newmethod)sigdel16write_new, (t_method)sigdel16write_free,
sizeof(t_sigdel16write), 0, A_DEFSYM, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(sigdel16write_class, t_sigdel16write, x_f);
class_addmethod(sigdel16write_class, (t_method)sigdel16write_dsp,
gensym("dsp"), 0);
}
// G.Holzmann: for PD-extended build system
void del16write_tilde_setup(void)
{
sigdel16write_setup();
}
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