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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. */
/* FIXME find a way of setting a 32-bit mask in an argument */
#include "m_pd.h"
#include "unstable/forky.h"
#include "sickle/sic.h"
typedef struct _bitxor
{
t_sic x_sic;
t_glist *x_glist;
t_int x_mask; /* set by a 'bits' message or a creation argument */
int x_mode;
int x_convert1;
} t_bitxor;
static t_class *bitxor_class;
static t_int *bitxor_perform(t_int *w)
{
t_bitxor *x = (t_bitxor *)(w[1]);
int nblock = (int)(w[2]);
t_float *in1 = (t_float *)(w[3]);
t_float *in2 = (t_float *)(w[4]);
t_float *out = (t_float *)(w[5]);
t_int mask = x->x_mask;
switch (x->x_mode)
{
/* LATER think about performance */
case 0:
/* CHECKED */
while (nblock--)
{
t_int i = ((*(t_int *)(t_float *)in1++) ^
(*(t_int *)(t_float *)in2++));
*out++ = *(t_float *)&i;
}
break;
case 1:
/* CHECKED */
while (nblock--)
{
t_int i = (((t_int)*in1++) ^
((t_int)*in2++));
*out++ = (t_float)i;
}
break;
case 2:
/* CHECKED */
while (nblock--)
{
t_int i = (*(t_int *)(t_float *)in1++) ^ ((t_int)*in2++);
*out++ = *(t_float *)&i;
}
break;
case 3:
/* CHECKED */
while (nblock--)
{
t_int i = ((t_int)*in1++) ^ (*(t_int *)(t_float *)in2++);
*out++ = (t_float)i;
}
break;
}
return (w + 6);
}
static t_int *bitxor_perform_noin2(t_int *w)
{
t_bitxor *x = (t_bitxor *)(w[1]);
int nblock = (int)(w[2]);
t_float *in = (t_float *)(w[3]);
t_float *out = (t_float *)(w[4]);
t_int mask = x->x_mask;
/* LATER think about performance */
if (x->x_convert1) while (nblock--)
{
/* CHECKED */
t_int i = ((t_int)*in++) ^ mask;
*out++ = (t_float)i;
}
else while (nblock--)
{
/* CHECKED */
t_int i = (*(t_int *)(t_float *)in++) ^ mask;
*out++ = *(t_float *)&i;
}
return (w + 5);
}
static void bitxor_dsp(t_bitxor *x, t_signal **sp)
{
if (forky_hasfeeders((t_object *)x, x->x_glist, 1, 0))
/* use the mask set by a second inlet's signal or float,
CHECKED (incompatible) second inlet's int is persistent */
dsp_add(bitxor_perform, 5, x, sp[0]->s_n, sp[0]->s_vec,
sp[1]->s_vec, sp[2]->s_vec);
else /* use the mask set by a 'bits' message or a creation argument */
dsp_add(bitxor_perform_noin2, 4, x, sp[0]->s_n, sp[0]->s_vec,
sp[1]->s_vec);
}
static void bitxor_bits(t_bitxor *x, t_symbol *s, int ac, t_atom *av)
{
x->x_mask = forky_getbitmask(ac, av);
}
static void bitxor_mode(t_bitxor *x, t_floatarg f)
{
int i = (int)f;
if (i < 0)
i = 0; /* CHECKED */
else if (i > 3)
i = 3; /* CHECKED */
x->x_mode = i;
x->x_convert1 = (x->x_mode == 1 || x->x_mode == 3);
}
static void *bitxor_new(t_floatarg f1, t_floatarg f2)
{
t_bitxor *x = (t_bitxor *)pd_new(bitxor_class);
x->x_glist = canvas_getcurrent();
inlet_new((t_object *)x, (t_pd *)x, &s_signal, &s_signal);
outlet_new((t_object *)x, &s_signal);
x->x_mask = (t_int)f1; /* FIXME (how?) */
bitxor_mode(x, f2);
return (x);
}
void bitxor_tilde_setup(void)
{
bitxor_class = class_new(gensym("bitxor~"),
(t_newmethod)bitxor_new, 0,
sizeof(t_bitxor), 0,
A_DEFFLOAT, A_DEFFLOAT, 0);
sic_setup(bitxor_class, bitxor_dsp, SIC_FLOATTOSIGNAL);
class_addmethod(bitxor_class, (t_method)bitxor_bits,
gensym("bits"), A_GIMME, 0);
class_addmethod(bitxor_class, (t_method)bitxor_mode,
gensym("mode"), A_FLOAT, 0);
}
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