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/* Copyright (c) 1997-2001 Miller Puckette and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
/* MIDI. */
#include "m_pd.h"
static t_class *bag_class;
typedef struct _bagelem
{
struct _bagelem *e_next;
t_float e_value;
} t_bagelem;
typedef struct _bag
{
t_object x_obj;
t_float x_velo;
t_bagelem *x_first;
} t_bag;
static void *bag_new(void )
{
t_bag *x = (t_bag *)pd_new(bag_class);
x->x_velo = 0;
floatinlet_new(&x->x_obj, &x->x_velo);
outlet_new(&x->x_obj, &s_float);
x->x_first = 0;
return (x);
}
static void bag_float(t_bag *x, t_float f)
{
t_bagelem *bagelem, *e2, *e3;
if (x->x_velo != 0)
{
bagelem = (t_bagelem *)getbytes(sizeof *bagelem);
bagelem->e_next = 0;
bagelem->e_value = f;
if (!x->x_first) x->x_first = bagelem;
else /* LATER replace with a faster algorithm */
{
for (e2 = x->x_first; e3 = e2->e_next; e2 = e3)
;
e2->e_next = bagelem;
}
}
else
{
if (!x->x_first) return;
if (x->x_first->e_value == f)
{
bagelem = x->x_first;
x->x_first = x->x_first->e_next;
freebytes(bagelem, sizeof(*bagelem));
return;
}
for (e2 = x->x_first; e3 = e2->e_next; e2 = e3)
if (e3->e_value == f)
{
e2->e_next = e3->e_next;
freebytes(e3, sizeof(*e3));
return;
}
}
}
static void bag_flush(t_bag *x)
{
t_bagelem *bagelem;
while (bagelem = x->x_first)
{
outlet_float(x->x_obj.ob_outlet, bagelem->e_value);
x->x_first = bagelem->e_next;
freebytes(bagelem, sizeof(*bagelem));
}
}
static void bag_clear(t_bag *x)
{
t_bagelem *bagelem;
while (bagelem = x->x_first)
{
x->x_first = bagelem->e_next;
freebytes(bagelem, sizeof(*bagelem));
}
}
void bag_setup(void)
{
bag_class = class_new(gensym("bag"),
(t_newmethod)bag_new, (t_method)bag_clear,
sizeof(t_bag), 0, 0);
class_addfloat(bag_class, bag_float);
class_addmethod(bag_class, (t_method)bag_flush, gensym("flush"), 0);
class_addmethod(bag_class, (t_method)bag_clear, gensym("clear"), 0);
}
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