diff options
Diffstat (limited to 'src/fifo.c')
| -rw-r--r-- | src/fifo.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/src/fifo.c b/src/fifo.c new file mode 100644 index 0000000..1e60550 --- /dev/null +++ b/src/fifo.c @@ -0,0 +1,86 @@ +/* ---------------------------- fifo ------------------------------------------ */
+/* */
+/* Fifo buffer of floats, empties itselfe on every bang (in order of coming in) */
+/* Written by Olaf Matthes (olaf.matthes@gmx.de) */
+/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */
+/* */
+/* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+/* */
+/* Based on PureData by Miller Puckette and others. */
+/* */
+/* Fifi-code based St. Rainstick fifi.c for Max, */
+/* copyright St. Rainstick, Amsterdam 1995 */
+/* */
+/* ---------------------------------------------------------------------------- */
+
+#include "m_pd.h"
+
+static char *version = "fifo v0.1, written by Olaf Matthes <olaf.matthes@gmx.de>";
+
+typedef struct fifo
+{
+ t_object d_ob;
+ t_float *getal;
+ t_int count, end, size;
+ t_outlet *out;
+
+}t_fifo;
+
+static t_class *fifo_class;
+
+static void fifo_int(t_fifo *x, t_floatarg n)
+{
+ x->getal[x->count] = n;
+ x->count = (x->count + 1) % x->size;
+}
+
+static void fifo_bang(t_fifo *x)
+{
+ if (x->end != x->count){
+ outlet_float(x->out,x->getal[x->end]);
+ x->end = (x->end + 1) % x->size;
+ }
+}
+
+static void fifo_free(t_fifo *x)
+{
+ freebytes(x->getal, x->size * sizeof(t_float));
+}
+
+static void *fifo_new(t_floatarg n)
+{
+
+ t_fifo *x = (t_fifo *)pd_new(fifo_class);
+ if (n<10) n = 10;
+ x->size = (t_int)n;
+ x->end = 0;
+ x->count = 0;
+ x->getal = (t_float *)getbytes(x->size * sizeof(t_float));
+ x->out = outlet_new(&x->d_ob, gensym("float"));
+
+#ifndef MAXLIB
+ post(version);
+#endif
+ return (x);
+}
+
+void fifo_setup(void)
+{
+ fifo_class = class_new(gensym("fifo"), (t_newmethod)fifo_new,
+ (t_method)fifo_free, sizeof(t_fifo), 0, A_DEFFLOAT, 0);
+ class_addfloat(fifo_class, fifo_int);
+ class_addbang(fifo_class, fifo_bang);
+ class_sethelpsymbol(fifo_class, gensym("maxlib/help-fifo.pd"));
+}
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