diff options
Diffstat (limited to 'lifo.c')
| -rw-r--r-- | lifo.c | 109 |
1 files changed, 109 insertions, 0 deletions
@@ -0,0 +1,109 @@ +/* ---------------------------- lifo ------------------------------------------ */
+/* */
+/* lifo 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 fifo.c for Max, */
+/* copyright St. Rainstick, Amsterdam 1995 */
+/* */
+/* ---------------------------------------------------------------------------- */
+
+#include "m_pd.h"
+
+static char *version = "lifo v0.1, written by Olaf Matthes <olaf.matthes@gmx.de>";
+
+typedef struct lifo
+{
+ t_object d_ob;
+ t_float *getal;
+ t_int size, teller;
+ t_outlet *out;
+
+}t_lifo;
+
+static t_class *lifo_class;
+
+static void lifo_int(t_lifo *x, t_floatarg n)
+{ + if(x->teller < x->size ) + { + x->getal[x->teller] = n;
+ x->teller++; + } + else + post("no more lifo memory"); +
+}
+
+static void lifo_bang(t_lifo *x)
+{
+ if (x->teller > 0) + {
+ outlet_float(x->out,x->getal[x->teller-1]);
+ x->teller--;
+ }
+}
+
+static void lifo_clear(t_lifo *x)
+{
+ x->teller = 0;
+}
+
+static void lifo_free(t_lifo *x)
+{
+ freebytes(x->getal, x->size * sizeof(t_float));
+}
+
+static void *lifo_new(t_floatarg n)
+{
+
+ t_lifo *x = (t_lifo *)pd_new(lifo_class);
+ if (n<10) n = 10;
+ x->size = (t_int)n;
+ x->teller = 0;
+ x->getal = (t_float *)getbytes(x->size * sizeof(t_float));
+ x->out = outlet_new(&x->d_ob, gensym("float"));
+
+ return (x);
+}
+
+#ifndef MAXLIB
+void lifo_setup(void)
+{
+ lifo_class = class_new(gensym("lifo"), (t_newmethod)lifo_new,
+ (t_method)lifo_free, sizeof(t_lifo), 0, A_DEFFLOAT, 0);
+ class_addfloat(lifo_class, lifo_int);
+ class_addbang(lifo_class, lifo_bang);
+ class_addmethod(lifo_class, (t_method)lifo_clear, gensym("clear"), 0);
+
+ post(version);
+}
+#else
+void maxlib_lifo_setup(void)
+{
+ lifo_class = class_new(gensym("maxlib_lifo"), (t_newmethod)lifo_new,
+ (t_method)lifo_free, sizeof(t_lifo), 0, A_DEFFLOAT, 0);
+ class_addcreator((t_newmethod)lifo_new, gensym("lifo"), A_DEFFLOAT, 0);
+ class_addfloat(lifo_class, lifo_int);
+ class_addbang(lifo_class, lifo_bang);
+ class_addmethod(lifo_class, (t_method)lifo_clear, gensym("clear"), 0);
+ class_sethelpsymbol(lifo_class, gensym("maxlib/lifo-help.pd"));
+}
+#endif
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