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/* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution.
iemlib2 written by Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2005 */
#ifdef _MSC_VER
#pragma warning( disable : 4244 )
#pragma warning( disable : 4305 )
#endif
#include "m_pd.h"
#include "iemlib.h"
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
/* ----------------------- speedlim -------------------------- */
/* -- reduces the flow of float-messages to one message per -- */
/* ----------------- initial argument time in ms ------------- */
static t_class *speedlim_class;
typedef struct _speedlim
{
t_object x_obj;
t_clock *x_clock;
float x_delay;
int x_output_is_locked;
int x_there_was_n_event;
float x_curval;
float x_lastout;
} t_speedlim;
static void speedlim_stop(t_speedlim *x)
{
x->x_output_is_locked = 0;
x->x_there_was_n_event = 0;
clock_unset(x->x_clock);
}
static void speedlim_tick(t_speedlim *x)
{
if(x->x_there_was_n_event)
{
x->x_output_is_locked = 1;
x->x_there_was_n_event = 0;
outlet_float(x->x_obj.ob_outlet, x->x_curval);
clock_delay(x->x_clock, x->x_delay);
}
else
{
x->x_output_is_locked = 0;
x->x_there_was_n_event = 0;
}
}
static void speedlim_float(t_speedlim *x, t_float val)
{
x->x_curval = val;
if(!x->x_output_is_locked)
{
x->x_output_is_locked = 1;
x->x_there_was_n_event = 0;
outlet_float(x->x_obj.ob_outlet, x->x_curval);
clock_delay(x->x_clock, x->x_delay);
}
else
x->x_there_was_n_event = 1;
}
static void speedlim_ft1(t_speedlim *x, t_float delay)
{
if(delay < 0.0)
delay = 0.0;
x->x_delay = delay;
}
static void speedlim_free(t_speedlim *x)
{
clock_free(x->x_clock);
}
static void *speedlim_new(t_float delay)
{
t_speedlim *x = (t_speedlim *)pd_new(speedlim_class);
if(delay < 0.0)
delay = 0.0;
x->x_delay = delay;
x->x_curval = 0.0f;
x->x_output_is_locked = 0;
x->x_there_was_n_event = 0;
x->x_clock = clock_new(x, (t_method)speedlim_tick);
outlet_new(&x->x_obj, &s_float);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("ft1"));
return (x);
}
void speedlim_setup(void)
{
speedlim_class = class_new(gensym("speedlim"), (t_newmethod)speedlim_new,
(t_method)speedlim_free, sizeof(t_speedlim), 0, A_DEFFLOAT, 0);
class_addmethod(speedlim_class, (t_method)speedlim_stop, gensym("stop"), 0);
class_addfloat(speedlim_class, (t_method)speedlim_float);
class_addmethod(speedlim_class, (t_method)speedlim_ft1, gensym("ft1"), A_FLOAT, 0);
class_sethelpsymbol(speedlim_class, gensym("iemhelp/help-speedlim"));
}
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