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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/loud.h"
#define ANAL_DEFSIZE 128
#define ANAL_MAXSIZE 1024
typedef struct _anal
{
t_object x_ob;
int x_value; /* negative, if initialized or reset */
int x_size;
int x_bytesize;
int *x_table;
/* CHECKED: the 'weight' count is a signed short (2 bytes),
wrapping into negative domain without any warning.
LATER consider complaining at == SHRT_MAX. */
} t_anal;
static t_class *anal_class;
static void anal_reset(t_anal *x)
{
x->x_value = -1;
}
static void anal_clear(t_anal *x)
{
memset(x->x_table, 0, x->x_bytesize);
}
static void anal_float(t_anal *x, t_float f)
{
int value;
if (loud_checkint((t_pd *)x, f, &value, &s_float)) /* CHECKED */
{
/* CHECKED: any input negative or >= size is ignored with an error
-- there is no output, and a previous state is kept. */
if (value >= 0 && value < x->x_size)
{
if (x->x_value >= 0)
{
t_atom at[3];
int ndx = x->x_value * x->x_size + value;
x->x_table[ndx]++;
SETFLOAT(at, x->x_value);
SETFLOAT(&at[1], value);
SETFLOAT(&at[2], x->x_table[ndx]);
outlet_list(((t_object *)x)->ob_outlet, &s_list, 3, at);
}
x->x_value = value;
}
else loud_error((t_pd *)x, "%d outside of table bounds", value);
}
}
static void anal_free(t_anal *x)
{
if (x->x_table)
freebytes(x->x_table, x->x_bytesize);
}
static void *anal_new(t_floatarg f)
{
t_anal *x;
int size = (int)f;
int bytesize;
int *table;
if (size < 1)
/* CHECKED: 1 is allowed (such an object rejects any nonzero input) */
size = ANAL_DEFSIZE;
else if (size > ANAL_MAXSIZE)
{
/* CHECKED: */
loud_warning(&anal_class, "size too large, using %d", ANAL_MAXSIZE);
size = ANAL_MAXSIZE; /* LATER switch into a 'sparse' mode */
}
/* CHECKED: actually the bytesize is size * size * sizeof(short),
and it shows up in */
bytesize = size * size * sizeof(*table);
if (!(table = (int *)getbytes(bytesize)))
return (0);
x = (t_anal *)pd_new(anal_class);
x->x_size = size;
x->x_bytesize = bytesize;
x->x_table = table;
outlet_new((t_object *)x, &s_list);
anal_reset(x);
anal_clear(x);
return (x);
}
void anal_setup(void)
{
anal_class = class_new(gensym("anal"),
(t_newmethod)anal_new,
(t_method)anal_free,
sizeof(t_anal), 0, A_DEFFLOAT, 0);
class_addfloat(anal_class, anal_float);
class_addmethod(anal_class, (t_method)anal_reset,
gensym("reset"), 0);
class_addmethod(anal_class, (t_method)anal_clear,
gensym("clear"), 0);
}
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