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/* op~ by Martin Peach 201003123, based on the zexy binop externals: */
/******************************************************
*
* zexy - implementation file
*
* copyleft (c) IOhannes m zmölnig
*
* 1999:forum::für::umläute:2004
*
* institute of electronic music and acoustics (iem)
*
******************************************************
*
* license: GNU General Public License v.2
*
******************************************************/
/* ----------------------------- op_tilde ----------------------------- */
#include "m_pd.h"
static t_class *op_tilde_class;
static char *operator_names[] = {"<=", ">=", "!=", "==", "<", ">", "le", "ge", "ne", "eq", "lt", "gt", "nop"};
static int n_opnames = 13;
typedef enum
{
le = 0,
ge,
ne,
eq,
lt,
gt,
nop,
none
} op_op;
typedef struct _op_tilde
{
t_object x_obj;
t_float x_f;
t_float x_g; /* inlet value */
op_op x_operator;
} t_op_tilde;
static void *op_tilde_new(t_symbol *s, int argc, t_atom *argv);
static t_int *op_tilde_perform(t_int *w);
static void op_tilde_help(t_op_tilde *x);
static void op_tilde_op(t_op_tilde *x, t_symbol *op);
static void op_tilde_dsp(t_op_tilde *x, t_signal **sp);
void op_tilde_setup(void);
static void *op_tilde_new(t_symbol *s, int argc, t_atom *argv)
{
t_symbol *argsym;
if (argc > 1) post("op~: extra arguments ignored");
if (argc == 0) post("op~: need to specify operator");
argsym = atom_getsymbolarg(0, argc, argv);
// post ("op~: %s", argsym->s_name);
t_op_tilde *x = (t_op_tilde *)pd_new(op_tilde_class);
x->x_operator = none;
switch (argsym->s_name[0])
{
case '<':
if (argsym->s_name[1] == 0) x->x_operator = lt;
else if (argsym->s_name[1] == '=') x->x_operator = le;
break;
case '>':
if (argsym->s_name[1] == 0) x->x_operator = gt;
else if (argsym->s_name[1] == '=') x->x_operator = ge;
break;
case '=':
if (argsym->s_name[1] == '=') x->x_operator = eq;
break;
case '!':
if (argsym->s_name[1] == '=') x->x_operator = ne;
break;
case 'n':
if
(
(argsym->s_name[1] == 'o')
&& (argsym->s_name[2] == 'p')
&& (argsym->s_name[3] == '\0')
)
x->x_operator = nop;
break;
}
if (x->x_operator == none)
{
post("op~: unknown operator");
x->x_operator = nop;
}
inlet_new(&x->x_obj, &x->x_obj.ob_pd, &s_signal, &s_signal);
outlet_new(&x->x_obj, &s_signal);
x->x_f = 0;
x->x_g = 0;
return (x);
}
static t_int *op_tilde_perform(t_int *w)
{
t_op_tilde *x = (t_op_tilde *)(w[1]);
t_sample *in1 = (t_sample *)(w[2]);
t_sample *in2 = (t_sample *)(w[3]);
t_sample *out = (t_sample *)(w[4]);
int n = (int)(w[5]);
switch (x->x_operator)
{
case le:
while (n--) *out++ = *in1++ <= *in2++;
break;
case ge:
while (n--) *out++ = *in1++ >= *in2++;
break;
case ne:
while (n--) *out++ = *in1++ != *in2++;
break;
case eq:
while (n--) *out++ = *in1++ == *in2++;
break;
case lt:
while (n--) *out++ = *in1++ < *in2++;
break;
case gt:
while (n--) *out++ = *in1++ > *in2++;
break;
case nop:
default:
while (n--) *out++ = 0;
break;
}
return (w+6);
}
static void op_tilde_help(t_op_tilde *x)
{
int i;
post("op~: available operators:");
for (i = 0; i < n_opnames; ++i)
{
post ("%s", operator_names[i]);
}
}
static void op_tilde_op(t_op_tilde *x, t_symbol *op)
{
int i, j = 0;
while ((op->s_name[j] != '\0') && (j < 3)) ++j;
if ((j < 1) || (j > 3))
{
post("op~: %s is not a valid operator (length %d)", op->s_name, j);
return;
}
for (i = 0; i < n_opnames; ++i)
{
if (operator_names[i][0] != op->s_name[0]) continue;
if ((j == 2) && (operator_names[i][1] != op->s_name[1])) continue;
if ((j == 3) && (operator_names[i][2] != op->s_name[2])) continue;
if ((j == 1) && (operator_names[i][1] != '\0')) continue;
break;
}
if (i == n_opnames)
{
post("op~: %s is not a valid operator (match)", op->s_name);
return;
}
switch(i)
{
/*"0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10", "11", "12"*/
/*"<=", ">=", "!=", "==", "<", ">", "le", "ge", "ne", "eq", "lt", "gt", "nop"*/
case 0:
case 6:
/* "<=" "le" */
x->x_operator = 0;
break;
case 1:
case 7:
/* ">=" "ge" */
x->x_operator = 1;
break;
case 2:
case 8:
/* "!=" "ne" */
x->x_operator = 2;
break;
case 3:
case 9:
/* "==" "eq" */
x->x_operator = 3;
break;
case 4:
case 10:
/* "<" "lt" */
x->x_operator = 4;
break;
case 5:
case 11:
/* ">" "gt" */
x->x_operator = 5;
break;
default:
/* "nop" */
x->x_operator = 6;
break;
}
// post("op~: operator %s", operator_names[i]);
}
static void op_tilde_dsp(t_op_tilde *x, t_signal **sp)
{
t_sample *in1 = sp[0]->s_vec;
t_sample *in2 = sp[1]->s_vec;
t_sample *out = sp[2]->s_vec;
int n = sp[0]->s_n;
dsp_add(op_tilde_perform, 5, x, in1, in2, out, n);
}
void op_tilde_setup(void)
{
op_tilde_class = class_new(gensym("op~"), (t_newmethod)op_tilde_new, 0,
sizeof(t_op_tilde), 0, A_GIMME, 0);
class_addmethod(op_tilde_class, (t_method)op_tilde_dsp, gensym("dsp"), 0);
class_addmethod(op_tilde_class, (t_method)op_tilde_help, gensym("help"), 0);
class_addmethod(op_tilde_class, (t_method)op_tilde_op, gensym("op"), A_DEFSYMBOL, 0);
CLASS_MAINSIGNALIN(op_tilde_class, t_op_tilde, x_f);
}
/* fin op~.c */
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