aboutsummaryrefslogtreecommitdiff
path: root/ignore.c
diff options
context:
space:
mode:
Diffstat (limited to 'ignore.c')
-rw-r--r--ignore.c119
1 files changed, 119 insertions, 0 deletions
diff --git a/ignore.c b/ignore.c
new file mode 100644
index 0000000..4dda16d
--- /dev/null
+++ b/ignore.c
@@ -0,0 +1,119 @@
+/* ------------------------- ignore ------------------------------------------- */
+/* */
+/* Ignores input that is followed by next value faster than N ms. */
+/* 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. */
+/* */
+/* ---------------------------------------------------------------------------- */
+
+#include "m_pd.h"
+
+static char *version = "ignore v0.1, written by Olaf Matthes <olaf.matthes@gmx.de>";
+
+typedef struct ignore
+{
+ t_object x_ob;
+ t_clock *x_clock;
+ t_inlet *x_intime;
+ t_outlet *x_outfloat;
+ t_float x_input;
+ t_float x_lastinput;
+ t_int x_limit; /* indicates if input is 'blocked' (1) */
+ t_int x_time; /* the time in ms */
+} t_ignore;
+
+static void ignore_tick(t_ignore *x)
+{
+ x->x_limit = 0;
+ /* output in case nothing has changed */
+ if(x->x_lastinput == x->x_input)
+ outlet_float(x->x_outfloat, x->x_lastinput);
+}
+
+static void ignore_float(t_ignore *x, t_floatarg f)
+{
+ x->x_input = f;
+ if(!x->x_limit)
+ {
+ x->x_limit = 1; /* ignore input within next N ms */
+ clock_delay(x->x_clock, x->x_time); /* start clock */
+ }
+ else /* ignore / start clock again */
+ {
+ x->x_lastinput = x->x_input; /* save current as last valid value */
+ clock_unset(x->x_clock); /* throw out last clock */
+ clock_delay(x->x_clock, x->x_time); /* start new clock */
+ }
+}
+
+static void ignore_time(t_ignore *x, t_floatarg f)
+{
+ x->x_time = (t_int)f;
+}
+
+static void ignore_reset(t_ignore *x)
+{
+ x->x_limit = 0;
+ post("ignore: reset");
+}
+
+static void ignore_free(t_ignore *x)
+{
+ clock_free(x->x_clock);
+}
+
+static t_class *ignore_class;
+
+static void *ignore_new(t_floatarg f)
+{
+ t_ignore *x = (t_ignore *)pd_new(ignore_class);
+ x->x_intime = inlet_new(&x->x_ob, &x->x_ob.ob_pd, gensym("float"), gensym("time"));
+ x->x_outfloat = outlet_new(&x->x_ob, gensym("float"));
+ x->x_clock = clock_new(x, (t_method)ignore_tick);
+
+ x->x_time = (t_int)f;
+ x->x_lastinput = 0;
+
+ return (void *)x;
+}
+
+#ifndef MAXLIB
+void ignore_setup(void)
+{
+ ignore_class = class_new(gensym("ignore"), (t_newmethod)ignore_new,
+ (t_method)ignore_free, sizeof(t_ignore), 0, A_DEFFLOAT, 0);
+ class_addmethod(ignore_class, (t_method)ignore_reset, gensym("reset"), 0);
+ class_addmethod(ignore_class, (t_method)ignore_time, gensym("time"), A_FLOAT, 0);
+ class_addfloat(ignore_class, ignore_float);
+
+ post(version);
+}
+#else
+void maxlib_ignore_setup(void)
+{
+ ignore_class = class_new(gensym("maxlib_ignore"), (t_newmethod)ignore_new,
+ (t_method)ignore_free, sizeof(t_ignore), 0, A_DEFFLOAT, 0);
+ class_addcreator((t_newmethod)ignore_new, gensym("ignore"), A_DEFFLOAT, 0);
+ class_addmethod(ignore_class, (t_method)ignore_reset, gensym("reset"), 0);
+ class_addmethod(ignore_class, (t_method)ignore_time, gensym("time"), A_FLOAT, 0);
+ class_addfloat(ignore_class, ignore_float);
+ class_sethelpsymbol(ignore_class, gensym("maxlib/ignore-help.pd"));
+}
+#endif
+