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/*
* bitsplit.c - Convert a signal to a binary vector.
* Copyright (c) 2000-2003 by Tom Schouten
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "m_pd.h"
#include <math.h>
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#define MAXCHANNELS 24
typedef struct bitsplitctl
{
int c_outputs;
t_float *c_input;
t_float **c_output;
} t_bitsplitctl;
typedef struct bitsplit
{
t_object x_obj;
t_float x_f;
t_bitsplitctl x_ctl;
} t_bitsplit;
static t_int *bitsplit_perform(t_int *word)
{
t_bitsplitctl *ctl = (t_bitsplitctl *)(word[1]);
int n = (int)(word[2]);
t_float *in = ctl->c_input;
int outputs = ctl->c_outputs;
t_float **out = ctl->c_output;
int i,j;
for (i=0;i<n;i++){
long word = (in[i] * (t_float)(0x7fffffff));
for (j=0; j<outputs; j++){
out[j][i] = (t_float)((word >> 31) & 1);
word <<= 1;
}
}
return (word+3);
}
static void bitsplit_dsp(t_bitsplit *x, t_signal **sp)
{
int i;
x->x_ctl.c_input = sp[0]->s_vec;
for (i=0;i<x->x_ctl.c_outputs;i++){
x->x_ctl.c_output[i] = sp[i+1]->s_vec;
}
dsp_add(bitsplit_perform, 2, &x->x_ctl, sp[0]->s_n);
}
static void bitsplit_free(t_bitsplit *x)
{
free (x->x_ctl.c_output);
}
t_class *bitsplit_class;
static void *bitsplit_new(t_floatarg channels)
{
int i = (int)channels;
t_bitsplit *x = (t_bitsplit *)pd_new(bitsplit_class);
if (i<1) i = 1;
if (i>MAXCHANNELS) i = MAXCHANNELS;
x->x_ctl.c_outputs = i;
x->x_ctl.c_output = malloc(sizeof(t_float)*i);
while (i--) outlet_new(&x->x_obj, gensym("signal"));
return (void *)x;
}
void bitsplit_tilde_setup(void)
{
bitsplit_class = class_new(gensym("bitsplit~"), (t_newmethod)bitsplit_new,
(t_method)bitsplit_free, sizeof(t_bitsplit), 0, A_DEFFLOAT, 0);
CLASS_MAINSIGNALIN(bitsplit_class, t_bitsplit, x_f);
class_addmethod(bitsplit_class, (t_method)bitsplit_dsp, gensym("dsp"), 0);
}
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