From d41e58e6cd71fdacdca69ba78c29d42dc7d330d5 Mon Sep 17 00:00:00 2001 From: Hans-Christoph Steiner Date: Wed, 20 Nov 2002 17:46:33 +0000 Subject: This commit was generated by cvs2svn to compensate for changes in r224, which included commits to RCS files with non-trunk default branches. svn path=/trunk/externals/maxlib/; revision=225 --- src/lifo.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 src/lifo.c (limited to 'src/lifo.c') diff --git a/src/lifo.c b/src/lifo.c new file mode 100644 index 0000000..e25203a --- /dev/null +++ b/src/lifo.c @@ -0,0 +1,95 @@ +/* ---------------------------- 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 fifi.c for Max, */ +/* copyright St. Rainstick, Amsterdam 1995 */ +/* */ +/* ---------------------------------------------------------------------------- */ + +#include "m_pd.h" + +static char *version = "lifo v0.1, written by Olaf Matthes "; + +typedef struct lifo +{ + t_object d_ob; + t_float *getal; + t_int count, end, size, teller; + t_outlet *out; + +}t_lifo; + +static t_class *lifo_class; + +static void lifo_int(t_lifo *x, t_floatarg n) +{ + x->getal[x->count] = n; + x->end = x->count; + if (x->teller < x->size) x->teller++; + x->count = (x->count + 1) % x->size; +} + +static void lifo_bang(t_lifo *x) +{ + if (x->teller > 0){ + outlet_float(x->out,x->getal[x->end]); + x->teller--; + x->end = (x->end + x->size - 1) % x->size; + } +} + +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->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 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); + class_sethelpsymbol(lifo_class, gensym("maxlib/help-lifo.pd")); +} -- cgit v1.2.1