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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.
iem_t3_lib written by Gerhard Eckel, Thomas Musil, Copyright (c) IEM KUG Graz Austria 2000 - 2006 */
#include "m_pd.h"
#include "iemlib.h"
/* ------------------------ t3_metro ---------------------------- */
static t_class *t3_metro_class;
typedef struct _t3_metro
{
t_object x_obj;
t_clock *x_clock;
double x_metrotime;
double x_ticks2ms;
double x_t3_bang;
int x_hit;
void *x_out_next;
} t_t3_metro;
static void t3_metro_stop(t_t3_metro *x)
{
clock_unset(x->x_clock);
}
static void t3_metro_tick(t_t3_metro *x)
{
double dticks;
int iticks;
x->x_hit = 0;
outlet_float(x->x_out_next, x->x_metrotime);
outlet_float(x->x_obj.ob_outlet, x->x_t3_bang);
dticks = (x->x_metrotime + x->x_t3_bang)/x->x_ticks2ms;
iticks = (int)dticks;
x->x_t3_bang = (dticks - (double)iticks)*x->x_ticks2ms;
if(!x->x_hit)
clock_delay(x->x_clock, (double)iticks*x->x_ticks2ms);
}
static void t3_metro_float(t_t3_metro *x, t_floatarg t3_bang)
{
double dticks;
int iticks;
if(t3_bang < 0)
t3_bang = 0;
dticks = (double)t3_bang/x->x_ticks2ms;
iticks = (int)dticks;
x->x_t3_bang = (dticks - (double)iticks)*x->x_ticks2ms;
clock_delay(x->x_clock, (double)iticks*x->x_ticks2ms);
x->x_hit = 1;
}
static void t3_metro_start(t_t3_metro *x, t_floatarg f)
{
t3_metro_float(x, f);
x->x_hit = 1;
}
static void t3_metro_ft1(t_t3_metro *x, t_floatarg f)
{
if(f < 0.01) f = 0.01;
x->x_metrotime = (double)f;
}
static void t3_metro_list(t_t3_metro *x, t_symbol *s, int ac, t_atom *av)
{
if((ac == 2)&&IS_A_FLOAT(av,0)&&IS_A_FLOAT(av,1))
{
t3_metro_ft1(x, atom_getfloatarg(1, ac, av));
t3_metro_float(x, atom_getfloatarg(0, ac, av));
}
}
static void t3_metro_free(t_t3_metro *x)
{
clock_free(x->x_clock);
}
static void *t3_metro_new(t_symbol *s, int ac, t_atom *av)
{
t_t3_metro *x = (t_t3_metro *)pd_new(t3_metro_class);
x->x_metrotime = 10.0;
x->x_t3_bang = 0.0;
x->x_hit = 0;
if((ac == 1)&&IS_A_FLOAT(av,0))
{
t3_metro_ft1(x, atom_getfloatarg(0, ac, av));
}
x->x_ticks2ms = 1000.0*(double)sys_getblksize()/(double)sys_getsr();
x->x_clock = clock_new(x, (t_method)t3_metro_tick);
outlet_new(&x->x_obj, &s_float);
x->x_out_next = outlet_new(&x->x_obj, &s_float);
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("ft1"));
return (x);
}
void t3_metro_setup(void)
{
t3_metro_class = class_new(gensym("t3_metro"), (t_newmethod)t3_metro_new,
(t_method)t3_metro_free, sizeof(t_t3_metro), 0, A_GIMME, 0);
class_addmethod(t3_metro_class, (t_method)t3_metro_stop, gensym("stop"), 0);
class_addmethod(t3_metro_class, (t_method)t3_metro_start, gensym("start"), A_FLOAT, 0);
class_addmethod(t3_metro_class, (t_method)t3_metro_ft1, gensym("ft1"), A_FLOAT, 0);
class_addfloat(t3_metro_class, (t_method)t3_metro_float);
class_addlist(t3_metro_class, (t_method)t3_metro_list);
// class_sethelpsymbol(t3_metro_class, gensym("iemhelp/help-t3_metro"));
}
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