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/* ------------------------- 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);
class_sethelpsymbol(ignore_class, gensym("help-ignore.pd"));
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/help-ignore.pd"));
}
#endif
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