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/******************************************************
*
* zexy - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 1999:forum::für::umläute:2004
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
#include "zexy.h"
#include <string.h>
/* ------------------------- glue ------------------------------- */
/* glue 2 lists together (append) */
static t_class *glue_class;
typedef struct _glue
{
t_object x_obj;
t_atom *ap2, *ap;
t_int n1, n2, n;
t_int changed;
} t_glue;
static void glue_lst2(t_glue *x, t_symbol *s, int argc, t_atom *argv)
{
x->changed = 1;
if (x->n2 != argc) {
freebytes(x->ap2, x->n2 * sizeof(t_atom));
x->n2 = argc;
x->ap2 = copybytes(argv, argc * sizeof(t_atom));
} else memcpy(x->ap2, argv, argc * sizeof(t_atom));
}
static void glue_lst(t_glue *x, t_symbol *s, int argc, t_atom *argv)
{
if (x->n != x->n2+argc) {
freebytes(x->ap, x->n * sizeof(t_atom));
x->n1 = argc;
x->n = x->n1+x->n2;
x->ap = (t_atom *)getbytes(sizeof(t_atom)*x->n);
memcpy(x->ap+argc, x->ap2, x->n2*sizeof(t_atom));
} else if ((x->n1 != argc)||x->changed)memcpy(x->ap+argc, x->ap2, x->n2*sizeof(t_atom));
x->n1 = argc;
memcpy(x->ap, argv, x->n1*sizeof(t_atom));
x->changed=0;
outlet_list(x->x_obj.ob_outlet, gensym("list"), x->n, x->ap);
}
static void glue_bang(t_glue *x)
{
if (x->changed) {
if (x->n1+x->n2 != x->n){
t_atom *ap = (t_atom*)getbytes(sizeof(t_atom)*(x->n1+x->n2));
memcpy(ap, x->ap, x->n1*sizeof(t_atom));
freebytes(x->ap, sizeof(t_atom)*x->n);
x->ap=ap;
x->n=x->n1+x->n2;
}
memcpy(x->ap+x->n1, x->ap2, x->n2*sizeof(t_atom));
x->changed=0;
}
outlet_list(x->x_obj.ob_outlet, gensym("list"), x->n, x->ap);
}
static void glue_free(t_glue *x)
{
freebytes(x->ap, sizeof(t_atom)*x->n);
freebytes(x->ap2, sizeof(t_atom)*x->n2);
}
static void *glue_new(t_symbol *s, int argc, t_atom *argv)
{
t_glue *x = (t_glue *)pd_new(glue_class);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("list"), gensym(""));
outlet_new(&x->x_obj, 0);
x->n =x->n2 = 0;
x->ap=x->ap2 = 0;
x->changed = 0;
if (argc)glue_lst2(x, gensym("list"), argc, argv);
return (x);
}
void glue_setup(void)
{
glue_class = class_new(gensym("glue"), (t_newmethod)glue_new,
(t_method)glue_free, sizeof(t_glue), 0, A_GIMME, 0);
class_addlist(glue_class, glue_lst);
class_addmethod (glue_class, (t_method)glue_lst2, gensym(""), A_GIMME, 0);
class_addbang(glue_class, glue_bang);
class_sethelpsymbol(glue_class, gensym("zexy/glue"));
zexy_register("glue");
}
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