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/* cd4024.c MP 20070319 */
/* Emulate a cd4024b */
#include "m_pd.h"
typedef struct _cd4024
{
t_object x_obj;
int x_reset;
int x_clock;
int x_count;
int x_updating;
t_outlet *x_Q1;
t_outlet *x_Q2;
t_outlet *x_Q3;
t_outlet *x_Q4;
t_outlet *x_Q5;
t_outlet *x_Q6;
t_outlet *x_Q7;
t_inlet *x_resetIn;/* reset */
/* The main inlet (clcok) should accept a bang or a one as valid clocks. */
/* If a one is received, it must be followed by a zero before the clock will work again. */
} t_cd4024;
static t_class *cd4024_class;
void cd4024_setup(void);
static void *cd4024_new(t_symbol *s, int argc, t_atom *argv);
static void cd4024_free(t_cd4024 *x);
static void cd4024_bang(t_cd4024 *x);
static void cd4024_float(t_cd4024 *x, t_float f);
static void cd4024_reset(t_cd4024 *x, t_float f);
static void cd4024_update_outlets(t_cd4024 *x);
static void cd4024_float(t_cd4024 *x, t_float f)
{
if (f == 0)
{ /* if clock is low and was high, clock it. */
if (x->x_clock == 1)
{
x->x_clock = 0;
cd4024_bang(x);
}
}
else if (f == 1) x->x_clock = 1;
else post("cd4024 clock accepts bang, 1 or 0.");
}
static void cd4024_bang(t_cd4024 *x)
{
if (x->x_reset == 0)
{ /* if reset is low, clock forward */
x->x_count = (x->x_count + 1)%128;
cd4024_update_outlets(x);
}
}
static void cd4024_reset(t_cd4024 *x, t_float f)
{
if (f == 1)
{
x->x_count = 0;
x->x_reset = 1;
if (x->x_updating != 0) x->x_updating |= 2;
else cd4024_update_outlets(x);
}
else if (f == 0) x->x_reset = 0;
}
static void cd4024_update_outlets(t_cd4024 *x)
{
reset:
x->x_updating = 1;/* updating outlets */
outlet_float(x->x_Q7, ((x->x_count & 64) != 0)?1:0);
/* we might get reset as a result of feedback from one of these outlets. */
if ((x->x_updating & 2) != 0) goto reset;
outlet_float(x->x_Q6, ((x->x_count & 32) != 0)?1:0);
if ((x->x_updating & 2) != 0) goto reset;
outlet_float(x->x_Q5, ((x->x_count & 16) != 0)?1:0);
if ((x->x_updating & 2) != 0) goto reset;
outlet_float(x->x_Q4, ((x->x_count & 8) != 0)?1:0);
if ((x->x_updating & 2) != 0) goto reset;
outlet_float(x->x_Q3, ((x->x_count & 4) != 0)?1:0);
if ((x->x_updating & 2) != 0) goto reset;
outlet_float(x->x_Q2, ((x->x_count & 2) != 0)?1:0);
if ((x->x_updating & 2) != 0) goto reset;
outlet_float(x->x_Q1, ((x->x_count & 1) != 0)?1:0);
if ((x->x_updating & 2) != 0) goto reset;
x->x_updating = 0; /* finished updating outlets */
}
static void cd4024_free(t_cd4024 *x)
{
return;
}
static void *cd4024_new(t_symbol *s, int argc, t_atom *argv)
{
t_cd4024 *x;
x = (t_cd4024 *)pd_new(cd4024_class);
if (x == NULL) return (x);
x->x_Q1 = outlet_new((t_object *)x, &s_float);
x->x_Q2 = outlet_new((t_object *)x, &s_float);
x->x_Q3 = outlet_new((t_object *)x, &s_float);
x->x_Q4 = outlet_new((t_object *)x, &s_float);
x->x_Q5 = outlet_new((t_object *)x, &s_float);
x->x_Q6 = outlet_new((t_object *)x, &s_float);
x->x_Q7 = outlet_new((t_object *)x, &s_float);
x->x_resetIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("reset"));
return (x);
}
void cd4024_setup(void)
{
cd4024_class = class_new(gensym("cd4024"),
(t_newmethod)cd4024_new,
(t_method)cd4024_free,
sizeof(t_cd4024), 0, 0); /* no arguments */
class_addbang(cd4024_class, cd4024_bang);
class_addfloat(cd4024_class, cd4024_float);
class_addmethod(cd4024_class, (t_method)cd4024_reset, gensym("reset"), A_FLOAT, 0);
}
/* end cd4024.c */
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