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/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
iem_dp written by IOhannes m zmoelnig, Thomas Musil, Copyright (c) IEM KUG Graz Austria 1999 - 2007 */
/* double precision library */
#include "m_pd.h"
#include "iemlib.h"
#include "iem_dp.h"
/* -------------------------- tabread~~ ------------------------------ */
/* based on miller's tabread~ which is part of pd */
/******************** tabread~ ***********************/
static t_class *tabread_tilde_tilde_class;
typedef struct _tabread_tilde_tilde
{
t_object x_obj;
int x_npoints;
iemarray_t *x_vec;
t_symbol *x_arrayname;
t_float x_f;
} t_tabread_tilde_tilde;
static void *tabread_tilde_tilde_new(t_symbol *s)
{
t_tabread_tilde_tilde *x = (t_tabread_tilde_tilde *)pd_new(tabread_tilde_tilde_class);
x->x_arrayname = s;
x->x_npoints=0;
x->x_vec = 0;
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
outlet_new(&x->x_obj, gensym("signal"));
x->x_f = 0;
return (x);
}
static t_int *tabread_tilde_tilde_perform(t_int *w)
{
t_tabread_tilde_tilde *x = (t_tabread_tilde_tilde *)(w[1]);
t_sample *in0 = (t_sample *)(w[2]);
t_sample *in1 = (t_sample *)(w[3]);
t_sample *out = (t_sample *)(w[4]);
int n = (int)(w[5]);
int maxindexminusone;
iemarray_t *buf = x->x_vec;
int i;
maxindexminusone = x->x_npoints - 1;
if(!buf)
{
while(n--)
*out++ = 0;
return(w+6);
}
for (i = 0; i < n; i++)
{
t_sample in0_s=*in0++;
t_sample in1_s=*in1++;
double findex = iem_dp_calc_sum(in0_s, in1_s);
int index = (int)findex;
if (index < 0)
index = 0;
else if (index > maxindexminusone)
index = maxindexminusone;
*out++ = iemarray_getfloat(buf, index);
}
return (w+6);
}
void tabread_tilde_tilde_set(t_tabread_tilde_tilde *x, t_symbol *s)
{
t_garray *a;
x->x_arrayname = s;
if (!(a = (t_garray *)pd_findbyclass(x->x_arrayname, garray_class)))
{
if (*s->s_name)
pd_error(x, "tabread~: %s: no such array", x->x_arrayname->s_name);
x->x_vec = 0;
}
else if (!iemarray_getarray(a, &x->x_npoints, &x->x_vec))
{
pd_error(x, "%s: bad template for tabread~", x->x_arrayname->s_name);
x->x_vec = 0;
}
else garray_usedindsp(a);
}
static void tabread_tilde_tilde_dsp(t_tabread_tilde_tilde *x, t_signal **sp)
{
tabread_tilde_tilde_set(x, x->x_arrayname);
dsp_add(tabread_tilde_tilde_perform, 5, x,
sp[0]->s_vec, sp[1]->s_vec, sp[2]->s_vec, sp[0]->s_n);
}
static void tabread_tilde_tilde_free(t_tabread_tilde_tilde *x)
{
}
void tabread_tilde_tilde_setup(void)
{
tabread_tilde_tilde_class = class_new(gensym("tabread~~"),
(t_newmethod)tabread_tilde_tilde_new, (t_method)tabread_tilde_tilde_free,
sizeof(t_tabread_tilde_tilde), 0, A_DEFSYM, 0);
CLASS_MAINSIGNALIN(tabread_tilde_tilde_class, t_tabread_tilde_tilde, x_f);
class_addmethod(tabread_tilde_tilde_class, (t_method)tabread_tilde_tilde_dsp,
gensym("dsp"), 0);
class_addmethod(tabread_tilde_tilde_class, (t_method)tabread_tilde_tilde_set,
gensym("set"), A_SYMBOL, 0);
}
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