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/* cd40193.c MP 20070312 */
/* Emulate a cd40193b */
#include "m_pd.h"
typedef struct _cd40193
{
t_object x_obj;
t_outlet *x_QAOut;
t_outlet *x_QBOut;
t_outlet *x_QCOut;
t_outlet *x_QDOut;
t_outlet *x_CarryOut;
t_outlet *x_BorrowOut;
int x_countUp;
int x_countDown;
int x_dataA;
int x_dataB;
int x_dataC;
int x_dataD;
int x_load;
int x_clear;
int x_count;
t_inlet *x_CountDownIn;/* All inlets take one or zero as acceptable inputs. */
t_inlet *x_ClearIn;
t_inlet *x_LoadIn;
t_inlet *x_DataAIn;
t_inlet *x_DataBIn;
t_inlet *x_DataCIn;
t_inlet *x_DataDIn;
/* The main inlet (clock) 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_cd40193;
static t_class *cd40193_class;
void cd40193_setup(void);
static void *cd40193_new(t_symbol *s, int argc, t_atom *argv);
static void cd40193_free(t_cd40193 *x);
static void cd40193_bang(t_cd40193 *x);
static void cd40193_float(t_cd40193 *x, t_float f);
static void cd40193_clear(t_cd40193 *x, t_float f);
static void cd40193_load(t_cd40193 *x, t_float f);
static void cd40193_count_down(t_cd40193 *x, t_float f);
static void cd40193_data_A(t_cd40193 *x, t_float f);
static void cd40193_data_B(t_cd40193 *x, t_float f);
static void cd40193_data_C(t_cd40193 *x, t_float f);
static void cd40193_data_D(t_cd40193 *x, t_float f);
static void cd40193_update_outlets(t_cd40193 *x);
static void cd40193_float(t_cd40193 *x, t_float f)
{
if (f == 1)
{ /* if clock is high and was low, count up. */
if ((x->x_countUp == 0)&&(x->x_countDown == 1)&&(x->x_clear == 0)&&(x->x_load == 1))
{
x->x_countUp = 1;
x->x_count = (x->x_count + 1)%16;
cd40193_update_outlets(x);
}
}
else if (f == 0)
{
if ((x->x_countUp == 1) && (x->x_count == 15)) outlet_float(x->x_CarryOut, 0);
x->x_countUp = 0;
}
else post("cd40193 accepts bang, 1 or 0.");
}
static void cd40193_bang(t_cd40193 *x)
{
if ((x->x_countDown == 1)&&(x->x_clear == 0)&&(x->x_load == 1))
{
x->x_countUp = 1;
x->x_count = (x->x_count + 1)%16;
cd40193_update_outlets(x);
if (x->x_count == 15) outlet_float(x->x_CarryOut, 0);
}
}
static void cd40193_clear(t_cd40193 *x, t_float f)
{
if (f == 1)
{
if (x->x_clear == 0)
{
x->x_count = 0;
cd40193_update_outlets(x);
x->x_clear = 1;
}
}
else if (f == 0)
{
x->x_clear = 0;
if (x->x_load == 0)
{ /* the strange case of a low-going clear enabling an already low load */
x->x_count = x->x_dataA + 2*x->x_dataB + 4*x->x_dataC + 8*x->x_dataD;
cd40193_update_outlets(x);
}
}
else
{
post("cd40193 clear takes 1 or 0 only.");
return;
}
}
static void cd40193_load(t_cd40193 *x, t_float f)
{
if (f == 1)
{
x->x_load = 1;
}
else if (f == 0)
{
if (x->x_load == 1)
{
x->x_load = 0;
if (x->x_clear == 0)
{
x->x_count = x->x_dataA + 2*x->x_dataB + 4*x->x_dataC + 8*x->x_dataD;
cd40193_update_outlets(x);
}
}
}
else
{
post("cd40193 load takes 1 or 0 only.");
return;
}
}
static void cd40193_count_down(t_cd40193 *x, t_float f)
{
if (f == 1)
{ /* if clock is high and was low, count down. */
if (x->x_countDown == 0)
{
x->x_countDown = 1;
if((x->x_countUp == 1)&&(x->x_clear == 0)&&(x->x_load = 1))
{
x->x_count = (x->x_count - 1)%16;
cd40193_update_outlets(x);
}
}
}
else if (f == 0)
{
if ((x->x_countDown == 1) && (x->x_count == 0)) outlet_float(x->x_BorrowOut, 0);
x->x_countDown = 0;
}
else post("cd40193 count down accepts bang, 1 or 0.");
}
static void cd40193_data_A(t_cd40193 *x, t_float f)
{
if (f == 1) x->x_dataA = 1;
else if (f == 0) x->x_dataA = 0;
else
{
post("cd40193 data A takes 1 or 0 only.");
return;
}
}
static void cd40193_data_B(t_cd40193 *x, t_float f)
{
if (f == 1) x->x_dataB = 1;
else if (f == 0) x->x_dataB = 0;
else
{
post("cd40193 data B takes 1 or 0 only.");
return;
}
}
static void cd40193_data_C(t_cd40193 *x, t_float f)
{
if (f == 1) x->x_dataC = 1;
else if (f == 0) x->x_dataC = 0;
else
{
post("cd40193 data C takes 1 or 0 only.");
return;
}
}
static void cd40193_data_D(t_cd40193 *x, t_float f)
{
if (f == 1) x->x_dataD = 1;
else if (f == 0) x->x_dataD = 0;
else
{
post("cd40193 data D takes 1 or 0 only.");
return;
}
}
static void cd40193_update_outlets(t_cd40193 *x)
{
outlet_float(x->x_BorrowOut, 1);
outlet_float(x->x_CarryOut, 1);
outlet_float(x->x_QDOut, ((x->x_count & 8) != 0)?1:0);
outlet_float(x->x_QCOut, ((x->x_count & 4) != 0)?1:0);
outlet_float(x->x_QBOut, ((x->x_count & 2) != 0)?1:0);
outlet_float(x->x_QAOut, ((x->x_count & 1) != 0)?1:0);
}
static void cd40193_free(t_cd40193 *x)
{
return;
}
static void *cd40193_new(t_symbol *s, int argc, t_atom *argv)
{
t_cd40193 *x;
x = (t_cd40193 *)pd_new(cd40193_class);
if (x == NULL) return (x);
x->x_QAOut = outlet_new((t_object *)x, &s_float);
x->x_QBOut = outlet_new((t_object *)x, &s_float);
x->x_QCOut = outlet_new((t_object *)x, &s_float);
x->x_QDOut = outlet_new((t_object *)x, &s_float);
x->x_CarryOut = outlet_new((t_object *)x, &s_float);
x->x_BorrowOut = outlet_new((t_object *)x, &s_float);
x->x_CountDownIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("countdown"));
x->x_ClearIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("clear"));
x->x_LoadIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("load"));
x->x_DataAIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataA"));
x->x_DataBIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataB"));
x->x_DataCIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataC"));
x->x_DataDIn = inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_float, gensym("dataD"));
return (x);
}
void cd40193_setup(void)
{
cd40193_class = class_new(gensym("cd40193"),
(t_newmethod)cd40193_new,
(t_method)cd40193_free,
sizeof(t_cd40193), 0, 0); /* no arguments */
class_addbang(cd40193_class, cd40193_bang);
class_addfloat(cd40193_class, cd40193_float);
class_addmethod(cd40193_class, (t_method)cd40193_count_down, gensym("countdown"), A_FLOAT, 0);
class_addmethod(cd40193_class, (t_method)cd40193_load, gensym("load"), A_FLOAT, 0);
class_addmethod(cd40193_class, (t_method)cd40193_clear, gensym("clear"), A_FLOAT, 0);
class_addmethod(cd40193_class, (t_method)cd40193_data_A, gensym("dataA"), A_FLOAT, 0);
class_addmethod(cd40193_class, (t_method)cd40193_data_B, gensym("dataB"), A_FLOAT, 0);
class_addmethod(cd40193_class, (t_method)cd40193_data_C, gensym("dataC"), A_FLOAT, 0);
class_addmethod(cd40193_class, (t_method)cd40193_data_D, gensym("dataD"), A_FLOAT, 0);
}
/* end cd40193.c */
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