107 lines
2.5 KiB
C
107 lines
2.5 KiB
C
|
|
||
|
|
#include <m_pd.h>
|
||
|
|
#include <m_fixed.h>
|
||
|
|
|
||
|
|
|
||
|
|
static t_class *tabread4_tilde_class;
|
||
|
|
|
||
|
|
typedef struct _tabread4_tilde
|
||
|
|
{
|
||
|
|
t_object x_obj;
|
||
|
|
int x_npoints;
|
||
|
|
t_sample *x_vec;
|
||
|
|
t_symbol *x_arrayname;
|
||
|
|
float x_f;
|
||
|
|
} t_tabread4_tilde;
|
||
|
|
|
||
|
|
static void *tabread4_tilde_new(t_symbol *s)
|
||
|
|
{
|
||
|
|
t_tabread4_tilde *x = (t_tabread4_tilde *)pd_new(tabread4_tilde_class);
|
||
|
|
x->x_arrayname = s;
|
||
|
|
x->x_vec = 0;
|
||
|
|
outlet_new(&x->x_obj, gensym("signal"));
|
||
|
|
x->x_f = 0;
|
||
|
|
return (x);
|
||
|
|
}
|
||
|
|
|
||
|
|
static t_int *tabread4_tilde_perform(t_int *w)
|
||
|
|
{
|
||
|
|
t_tabread4_tilde *x = (t_tabread4_tilde *)(w[1]);
|
||
|
|
t_sample *in = (t_sample *)(w[2]);
|
||
|
|
t_sample *out = (t_sample *)(w[3]);
|
||
|
|
int n = (int)(w[4]);
|
||
|
|
int maxindex;
|
||
|
|
t_sample *buf = x->x_vec, *fp;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
maxindex = x->x_npoints - 3;
|
||
|
|
|
||
|
|
if (!buf) goto zero;
|
||
|
|
|
||
|
|
for (i = 0; i < n; i++)
|
||
|
|
{
|
||
|
|
t_time findex = ((long long) mult((*in++),ftofix(44.1)));
|
||
|
|
int index = fixtoi(findex);
|
||
|
|
t_sample frac;
|
||
|
|
// post("%d: index %d f %lld",index,findex,*in);
|
||
|
|
|
||
|
|
if (index < 1)
|
||
|
|
index = 1, frac = 0;
|
||
|
|
else if (index > maxindex)
|
||
|
|
index = maxindex, frac = 1;
|
||
|
|
else frac = findex - itofix(index);
|
||
|
|
fp = buf + index;
|
||
|
|
*out++ = fp[0] + mult(frac,fp[1]-fp[0]);
|
||
|
|
}
|
||
|
|
return (w+5);
|
||
|
|
zero:
|
||
|
|
while (n--) *out++ = 0;
|
||
|
|
|
||
|
|
return (w+5);
|
||
|
|
}
|
||
|
|
|
||
|
|
void tabread4_tilde_set(t_tabread4_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)
|
||
|
|
error("tabread4~: %s: no such array", x->x_arrayname->s_name);
|
||
|
|
x->x_vec = 0;
|
||
|
|
}
|
||
|
|
else if (!garray_getfloatarray(a, &x->x_npoints, &x->x_vec))
|
||
|
|
{
|
||
|
|
error("%s: bad template for tabread4~", x->x_arrayname->s_name);
|
||
|
|
x->x_vec = 0;
|
||
|
|
}
|
||
|
|
else garray_usedindsp(a);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void tabread4_tilde_dsp(t_tabread4_tilde *x, t_signal **sp)
|
||
|
|
{
|
||
|
|
tabread4_tilde_set(x, x->x_arrayname);
|
||
|
|
|
||
|
|
dsp_add(tabread4_tilde_perform, 4, x,
|
||
|
|
sp[0]->s_vec, sp[1]->s_vec, sp[0]->s_n);
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
static void tabread4_tilde_free(t_tabread4_tilde *x)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
|
||
|
|
void tabread4_tilde_setup(void)
|
||
|
|
{
|
||
|
|
tabread4_tilde_class = class_new(gensym("tabread4~"),
|
||
|
|
(t_newmethod)tabread4_tilde_new, (t_method)tabread4_tilde_free,
|
||
|
|
sizeof(t_tabread4_tilde), 0, A_DEFSYM, 0);
|
||
|
|
CLASS_MAINSIGNALIN(tabread4_tilde_class, t_tabread4_tilde, x_f);
|
||
|
|
class_addmethod(tabread4_tilde_class, (t_method)tabread4_tilde_dsp,
|
||
|
|
gensym("dsp"), 0);
|
||
|
|
class_addmethod(tabread4_tilde_class, (t_method)tabread4_tilde_set,
|
||
|
|
gensym("set"), A_SYMBOL, 0);
|
||
|
|
}
|
||
|
|
|