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/* Copyright (c) 2002-2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include <string.h>
#include "m_pd.h"
#include "common/grow.h"
#define CLIP_INISIZE 32 /* LATER rethink */
#define CLIP_MAXSIZE 256
typedef struct _clip
{
t_object x_ob;
float x_f1;
float x_f2;
int x_size; /* as allocated */
t_atom *x_message;
t_atom x_messini[CLIP_INISIZE];
int x_entered;
} t_clip;
static t_class *clip_class;
/* CHECKED case of f1 > f2: x <= f2 => f1, x > f2 => f2
(Pd implementation of clip has it the other way around) */
static void clip_float(t_clip *x, t_float f)
{
outlet_float(((t_object *)x)->ob_outlet,
(f > x->x_f2 ? x->x_f2 : (f < x->x_f1 ? x->x_f1 : f)));
}
static void clip_list(t_clip *x, t_symbol *s, int ac, t_atom *av)
{
if (ac)
{
int docopy = 0;
int i;
t_atom *ap;
t_float f1 = x->x_f1;
t_float f2 = x->x_f2;
for (i = 0, ap = av; i < ac; i++, ap++)
{
t_float f;
if (ap->a_type == A_FLOAT)
f = ap->a_w.w_float;
else
{
docopy = 1;
/* CHECKED: symbols inside lists are converted to zeros */
f = 0;
}
if (f < f1 || f > f2) docopy = 1;
}
if (docopy)
{
t_atom *buf;
t_atom *bp;
int reentered = x->x_entered;
int prealloc = !reentered;
x->x_entered = 1;
if (prealloc && ac > x->x_size)
{
if (ac > CLIP_MAXSIZE)
prealloc = 0;
else
x->x_message = grow_nodata(&ac, &x->x_size, x->x_message,
CLIP_INISIZE, x->x_messini,
sizeof(*x->x_message));
}
if (prealloc) buf = x->x_message;
else
/* LATER consider using the stack if ntotal <= MAXSTACK */
buf = getbytes(ac * sizeof(*buf));
if (buf)
{
for (i = 0, ap = av, bp = buf; i < ac; i++, ap++, bp++)
{
t_float f = (ap->a_type == A_FLOAT ? ap->a_w.w_float : 0);
if (f < f1)
f = f1;
else if (f > f2)
f = f2;
SETFLOAT(bp, f);
}
outlet_list(((t_object *)x)->ob_outlet, &s_list, ac, buf);
if (buf != x->x_message)
freebytes(buf, ac * sizeof(*buf));
}
if (!reentered)
{
x->x_entered = 0;
}
}
else outlet_list(((t_object *)x)->ob_outlet, &s_list, ac, av);
}
}
static void clip_set(t_clip *x, t_symbol *s, int ac, t_atom *av)
{
x->x_f1 = 0;
x->x_f2 = 0;
if (ac) /* CHECKED: 'set' without arguments sets both values to 0 */
{
if (av->a_type == A_FLOAT) /* CHECKED: symbol is converted to 0 */
x->x_f1 = av->a_w.w_float;
av++;
if (--ac)
{
if (av->a_type == A_FLOAT)
x->x_f2 = av->a_w.w_float;
}
else x->x_f2 = x->x_f1; /* CHECKED */
}
}
static void clip_free(t_clip *x)
{
if (x->x_message != x->x_messini)
freebytes(x->x_message, x->x_size * sizeof(*x->x_message));
}
static void *clip_new(t_symbol *s, int ac, t_atom *av)
{
t_clip *x = (t_clip *)pd_new(clip_class);
x->x_f1 = 0;
x->x_f2 = 0;
x->x_size = CLIP_INISIZE;
x->x_message = x->x_messini;
x->x_entered = 0;
floatinlet_new((t_object *)x, &x->x_f1);
floatinlet_new((t_object *)x, &x->x_f2);
outlet_new(&x->x_ob, &s_anything);
clip_set(x, 0, ac, av);
return (x);
}
void Clip_setup(void)
{
clip_class = class_new(gensym("Clip"),
(t_newmethod)clip_new,
(t_method)clip_free,
sizeof(t_clip), 0,
A_GIMME, 0);
class_addfloat(clip_class, clip_float);
class_addlist(clip_class, clip_list);
class_addmethod(clip_class, (t_method)clip_set,
gensym("set"), A_GIMME, 0);
}
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