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#include "defines.h"
/*--------------- vvconv ---------------*/
/* vector convolution
*/
static t_class *vvconv_class;
static t_class *vvconv_scal_class;
typedef struct _vvconv
{
t_object x_obj;
t_int n1, n2;
t_float *buf1, *buf2;
t_float f;
} t_vvconv;
static void vvconv_lst2(t_vvconv *x, t_symbol *s, int argc, t_atom *argv)
{
t_float *fp;
if (x->n2 != argc) {
freebytes(x->buf2, x->n2 * sizeof(t_float));
x->n2 = argc;
x->buf2=(t_float *)getbytes(sizeof(t_float)*x->n2);
};
fp = x->buf2;
while(argc--)*fp++=atom_getfloat(argv++);
}
static void vvconv_lst(t_vvconv *x, t_symbol *s, int argc, t_atom *argv)
{
t_float *fp;
t_atom *ap;
int n;
if (argc){
if (x->n1 != argc) {
freebytes(x->buf1, x->n1 * sizeof(t_float));
x->n1 = argc;
x->buf1=(t_float *)getbytes(sizeof(t_float)*x->n1);
};
fp = x->buf1;
while(argc--)*fp++=atom_getfloat(argv++);
}
if (x->n1*x->n2==1){
outlet_float(x->x_obj.ob_outlet, *x->buf1**x->buf2);
return;
}
if (x->n1==1){
t_atom *a;
int i = x->n2;
t_float f = *x->buf1;
fp = x->buf2;
n = x->n2;
ap = (t_atom *)getbytes(sizeof(t_atom)*n);
a = ap;
while(i--){
SETFLOAT(a, *fp++*f);
a++;
}
} else if (x->n2==1){
t_float f = *x->buf2;
t_atom *a;
int i = x->n1;
n = x->n1;
ap = (t_atom *)getbytes(sizeof(t_atom)*n);
a = ap;
fp = x->buf1;
while(i--){
SETFLOAT(a, *fp++*f);
a++;
}
} else {
t_atom *a;
int i,j,n1,n2;
t_float *f;
t_float *g;
t_float *fp2=x->buf2;
fp = x->buf1;
n1=x->n1;
n2=x->n2;
n = n1 + n2 - 1;
f = (t_float *)getbytes(sizeof(t_float)*n);
g=f;
for(i=0;i<n;i++)
*g++=0.0f;
for(i=0;i<n1;i++)
for(j=0;j<n2;j++)
f[i+j]+=fp[i]*fp2[j];
g=f;
ap = (t_atom *)getbytes(sizeof(t_atom)*n);
a = ap;
i=n;
while(i--){
SETFLOAT(a, *g++);
a++;
}
freebytes(f,sizeof(float)*n);
}
outlet_list(x->x_obj.ob_outlet, gensym("list"), n, ap);
freebytes(ap, sizeof(t_atom)*n);
}
static void vvconv_free(t_vvconv *x)
{
freebytes(x->buf1, sizeof(t_float)*x->n1);
freebytes(x->buf2, sizeof(t_float)*x->n2);
}
static void *vvconv_new(t_symbol *s, int argc, t_atom *argv)
{
t_vvconv *x;
if (argc-1){
x = (t_vvconv *)pd_new(vvconv_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym(""));
} else x = (t_vvconv *)pd_new(vvconv_scal_class);
outlet_new(&x->x_obj, 0);
x->n1 =1;
x->buf1 =(t_float*)getbytes(sizeof(t_float));
*x->buf1=0;
if (argc)vvconv_lst2(x, gensym("list"), argc, argv);
else {
x->n2 =1;
x->buf2 =(t_float*)getbytes(sizeof(t_float));
*x->buf2=0;
}
if (argc==1)floatinlet_new(&x->x_obj, x->buf2);
return (x);
}
void vvconv_setup(void)
{
vvconv_class = class_new(gensym("vvconv"), (t_newmethod)vvconv_new,
(t_method)vvconv_free, sizeof(t_vvconv), 0, A_GIMME, 0);
class_addlist(vvconv_class, vvconv_lst);
class_addmethod (vvconv_class, (t_method)vvconv_lst2, gensym(""), A_GIMME, 0);
vvconv_scal_class = class_new(gensym("vv+"), 0, (t_method)vvconv_free,
sizeof(t_vvconv), 0, 0);
class_addlist(vvconv_scal_class, vvconv_lst);
}
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