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#include "m_pd.h"
#include <string.h>
#define IS_A_SYMBOL(atom,index) ((atom+index)->a_type == A_SYMBOL)
#define IS_A_FLOAT(atom,index) ((atom+index)->a_type == A_FLOAT)
/* Mode 0: unfold all the list till its end or when banged.
* Mode 1: unfold each element of the list at each bang.
* Mode 0 is by default. Mode 1 is activated when list_unfold is
* created with "wait" or "manually" as only argument.
*/
static t_class *list_unfold_class;
typedef struct _list_unfold {
t_object x_obj;
t_int iterating;
t_outlet* outlet1;
t_outlet* outlet2;
t_int mode;
int memSize;
int ac;
t_atom* av;
} t_list_unfold;
void list_unfold_bang(t_list_unfold *x)
{
//x->i_count = x->i_down;
if ( x->mode == 0) {
x->iterating = 0;
} else {
int i;
if ( x->iterating < x->ac ) {
i = x->iterating;
x->iterating++;
outlet_float(x->outlet2,i);
if ( IS_A_FLOAT(x->av,i) ) {
outlet_float(x->outlet1,atom_getfloat(x->av + i));
} else {
outlet_symbol(x->outlet1,atom_getsymbol(x->av + i));
}
}
}
}
void list_unfold_anything(t_list_unfold *x, t_symbol* s, int ac, t_atom* av)
{
if ( x->mode == 0) {
// Output all
int i =0;
int offset =0;
x->iterating = 1;
if ( s != &s_list && s != &s_float && s != &s_symbol ) {
outlet_float(x->outlet2,0);
outlet_symbol(x->outlet1,s);
offset=1;
}
for ( ; i < ac && x->iterating; i++ ) {
outlet_float(x->outlet2,i+offset);
if ( IS_A_FLOAT(av,0) ) {
outlet_float(x->outlet1,atom_getfloat(av));
} else {
outlet_symbol(x->outlet1,atom_getsymbol(av));
}
av++;
}
} else {
x->iterating = 0;
// Copy and wait for bangs to output
int do_selector = ( s != &s_list && s != &s_float && s != &s_symbol );
x->ac = ac + do_selector; //One more for the selector
// Resize memory if required and add 3 atoms just in case
if(x->ac > x->memSize) {
x->av = resizebytes(x->av, x->memSize * sizeof(*(x->av)),
(3 + x->ac) * sizeof(*(x->av)));
x->memSize = 3 + x->ac;
}
t_atom* dst = x->av;
// Copy selector
if ( do_selector ) {
SETSYMBOL(dst, s);
dst++;
}
// Copy atoms
while(ac--) *dst++ = *av++;
}
}
static void list_unfold_free(t_list_unfold *x)
{
freebytes(x->av, x->memSize * sizeof(*(x->av)));
}
void *list_unfold_new(t_symbol *s, int argc, t_atom *argv)
{
t_list_unfold *x = (t_list_unfold *)pd_new(list_unfold_class);
x->iterating = 0;
x->mode = 0;
if (argc && IS_A_SYMBOL(argv,0) ) {
t_symbol* type = atom_getsymbol(argv);
if (strcmp(type->s_name,"wait")==0 || strcmp(type->s_name,"manually")==0) {
x->mode = 1;
}
}
// Initialize memory
x->memSize = 10;
x->ac = 0;
x->av = getbytes(x->memSize * sizeof(*(x->av)));
x->outlet1 = outlet_new(&x->x_obj, &s_list);
x->outlet2 = outlet_new(&x->x_obj, &s_float);
return (void *)x;
}
void list_unfold_setup(void) {
list_unfold_class = class_new(gensym("list_unfold"),
(t_newmethod)list_unfold_new,
(t_method)list_unfold_free, sizeof(t_list_unfold),
CLASS_DEFAULT,
A_GIMME, 0);
class_addbang (list_unfold_class, list_unfold_bang);
class_addanything (list_unfold_class, list_unfold_anything);
//class_addlist (list_unfold_class, list_unfold_list);
}
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