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-rw-r--r--modules/bitsplit.c107
1 files changed, 107 insertions, 0 deletions
diff --git a/modules/bitsplit.c b/modules/bitsplit.c
new file mode 100644
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--- /dev/null
+++ b/modules/bitsplit.c
@@ -0,0 +1,107 @@
+/*
+ * 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
+{
+ t_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]);
+ t_int n = (t_int)(word[2]);
+ t_float *in = ctl->c_input;
+ t_int outputs = ctl->c_outputs;
+ t_float **out = ctl->c_output;
+ t_int i,j;
+
+ for (i=0;i<n;i++){
+ long word = (in[i] * (float)(0x7fffffff));
+ for (j=0; j<outputs; j++){
+ out[j][i] = (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(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);
+}
+