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/* Copyright (c) 2002-2003 krzYszcz and others.
* For information on usage and redistribution, and for a DISCLAIMER OF ALL
* WARRANTIES, see the file, "LICENSE.txt," in this distribution. */
#include "m_pd.h"
#include "common/loud.h"
#define GATE_MINOUTS 1
#define GATE_C74MAXOUTS 100
#define GATE_DEFOUTS 1
typedef struct _gate
{
t_object x_ob;
int x_open;
t_pd *x_proxy;
int x_nouts; /* requested + 1 (as allocated) */
t_outlet **x_outs;
} t_gate;
typedef struct _gate_proxy
{
t_object p_ob;
t_gate *p_master;
} t_gate_proxy;
static t_class *gate_class;
static t_class *gate_proxy_class;
static void gate_proxy_bang(t_gate_proxy *x)
{
t_gate *master = x->p_master;
if (master->x_open)
outlet_bang(master->x_outs[master->x_open]);
}
static void gate_proxy_float(t_gate_proxy *x, t_float f)
{
t_gate *master = x->p_master;
if (master->x_open)
outlet_float(master->x_outs[master->x_open], f);
}
static void gate_proxy_symbol(t_gate_proxy *x, t_symbol *s)
{
t_gate *master = x->p_master;
if (master->x_open)
outlet_symbol(master->x_outs[master->x_open], s);
}
static void gate_proxy_pointer(t_gate_proxy *x, t_gpointer *gp)
{
t_gate *master = x->p_master;
if (master->x_open)
outlet_pointer(master->x_outs[master->x_open], gp);
}
static void gate_proxy_list(t_gate_proxy *x,
t_symbol *s, int ac, t_atom *av)
{
t_gate *master = x->p_master;
if (master->x_open)
outlet_list(master->x_outs[master->x_open], s, ac, av);
}
static void gate_proxy_anything(t_gate_proxy *x,
t_symbol *s, int ac, t_atom *av)
{
t_gate *master = x->p_master;
if (master->x_open)
outlet_anything(master->x_outs[master->x_open], s, ac, av);
}
static void gate_float(t_gate *x, t_float f)
{
int i = (int)f;
if (i < 0) i = 1;
if (i >= x->x_nouts) i = x->x_nouts - 1;
x->x_open = i;
}
static void gate_bang(t_gate *x)
{
outlet_float(x->x_outs[1], x->x_open);
}
static void gate_free(t_gate *x)
{
if (x->x_proxy) pd_free(x->x_proxy);
if (x->x_outs)
freebytes(x->x_outs, x->x_nouts * sizeof(*x->x_outs));
}
static void *gate_new(t_floatarg f1, t_floatarg f2)
{
t_gate *x;
int i, nouts = (int)f1;
t_outlet **outs;
t_pd *proxy;
if (nouts < GATE_MINOUTS)
nouts = GATE_DEFOUTS;
if (nouts > GATE_C74MAXOUTS)
loud_incompatible_max(gate_class, GATE_C74MAXOUTS, "outlets");
nouts++; /* for convenience (the cost is one pointer) */
if (!(outs = (t_outlet **)getbytes(nouts * sizeof(*outs))))
return (0);
if (!(proxy = pd_new(gate_proxy_class)))
{
freebytes(outs, nouts * sizeof(*outs));
return (0);
}
x = (t_gate *)pd_new(gate_class);
x->x_nouts = nouts;
x->x_outs = outs;
x->x_proxy = proxy;
((t_gate_proxy *)proxy)->p_master = x;
/* from max sdk manual: ``The dst parameter can be changed (or set to 0)
dynamically with the inlet_to function... The gate object uses this
technique to assign its inlet to one of several outlets, or no outlet
at all.'' We have to use a proxy, because Pd's outlet is not a t_pd
(besides, Pd does not handle inlets with null destination). */
inlet_new((t_object *)x, proxy, 0, 0);
for (i = 1; i < nouts; i++)
x->x_outs[i] = outlet_new((t_object *)x, &s_anything);
gate_float(x, (f2 > 0 ? f2 : 0)); /* CHECKED */
return (x);
}
void gate_setup(void)
{
gate_class = class_new(gensym("gate"),
(t_newmethod)gate_new,
(t_method)gate_free,
sizeof(t_gate), 0,
A_DEFFLOAT, A_DEFFLOAT, 0);
class_addfloat(gate_class, gate_float);
class_addbang(gate_class, gate_bang);
gate_proxy_class = class_new(gensym("_gate_proxy"), 0, 0,
sizeof(t_gate_proxy),
CLASS_PD | CLASS_NOINLET, 0);
class_addfloat(gate_proxy_class, gate_proxy_float);
class_addbang(gate_proxy_class, gate_proxy_bang);
class_addsymbol(gate_proxy_class, gate_proxy_symbol);
class_addpointer(gate_proxy_class, gate_proxy_pointer);
class_addlist(gate_proxy_class, gate_proxy_list);
class_addanything(gate_proxy_class, gate_proxy_anything);
}
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