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/* cd4015.c MP 20070315 */
/* Emulate a cd4015b */
#include "m_pd.h"
typedef struct _cd4015
{
t_object x_obj;
int x_D;
int x_R;
int x_Clk;
int x_Q;
t_outlet *x_outQ1;
t_outlet *x_outQ2;
t_outlet *x_outQ3;
t_outlet *x_outQ4;
t_inlet *x_inD;/* extra inlets are 'live' like the first */
t_inlet *x_inR;
} t_cd4015;
static t_class *cd4015_class;
void cd4015_setup(void);
static void *cd4015_new(t_symbol *s, int argc, t_atom *argv);
static void cd4015_free(t_cd4015 *x);
static void cd4015_float(t_cd4015 *x, t_float f);
static void cd4015_bang(t_cd4015 *x);
static void cd4015_inD(t_cd4015 *x, t_float f);
static void cd4015_inR(t_cd4015 *x, t_float f);
static void cd4015_update_outlets(t_cd4015 *x);
static void cd4015_float(t_cd4015 *x, t_float f)
{
if (f == 1)
{
if (x->x_Clk == 0)
{
x->x_Clk = 1;
cd4015_bang(x);
}
}
else if (f == 0) x->x_Clk = 0;
else
{
post("cd4015 Clock inlet accepts 1 or 0.");
return;
}
}
static void cd4015_bang(t_cd4015 *x)
{
if (x->x_R == 0)
{ /* shift left by one */
x->x_Q <<= 1;
x->x_Q |= x->x_D;
cd4015_update_outlets(x);
}
}
static void cd4015_inD(t_cd4015 *x, t_float f)
{
if (f == 1) x->x_D = 1;
else if (f == 0) x->x_D = 0;
else
{
post("cd4015 D inlet accepts 1 or 0.");
return;
}
}
static void cd4015_inR(t_cd4015 *x, t_float f)
{
if (f == 1)
{
x->x_R = 1;
x->x_Q = 0;
cd4015_update_outlets(x);
}
else if (f == 0) x->x_R = 0;
else
{
post("cd4015 R inlet accepts 1 or 0.");
return;
}
}
static void cd4015_update_outlets(t_cd4015 *x)
{
outlet_float(x->x_outQ4, ((x->x_Q & 8) != 0)?1:0);
outlet_float(x->x_outQ3, ((x->x_Q & 4) != 0)?1:0);
outlet_float(x->x_outQ2, ((x->x_Q & 2) != 0)?1:0);
outlet_float(x->x_outQ1, ((x->x_Q & 1) != 0)?1:0);
}
static void cd4015_free(t_cd4015 *x)
{
return;
}
static void *cd4015_new(t_symbol *s, int argc, t_atom *argv)
{
t_cd4015 *x;
x = (t_cd4015 *)pd_new(cd4015_class);
if (x == NULL) return (x);
x->x_outQ1 = outlet_new((t_object *)x, &s_float);
x->x_outQ2 = outlet_new((t_object *)x, &s_float);
x->x_outQ3 = outlet_new((t_object *)x, &s_float);
x->x_outQ4 = outlet_new((t_object *)x, &s_float);
x->x_inD = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("D"));
x->x_inR = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("R"));
return (x);
}
void cd4015_setup(void)
{
cd4015_class = class_new(gensym("cd4015"),
(t_newmethod)cd4015_new,
(t_method)cd4015_free,
sizeof(t_cd4015), 0, 0); /* no arguments */
class_addfloat(cd4015_class, cd4015_float);
class_addbang(cd4015_class, cd4015_bang);
class_addmethod(cd4015_class, (t_method)cd4015_inD, gensym("D"), A_FLOAT, 0);
class_addmethod(cd4015_class, (t_method)cd4015_inR, gensym("R"), A_FLOAT, 0);
}
/* end cd4015.c */
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