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/* ------------------------- nroute ------------------------------------------ */
/* */
/* Route input according to Nth element. */
/* Written by Olaf Matthes <olaf.matthes@gmx.de> */
/* Based on code found on the web. */
/* Get source at http://www.akustische-kunst.org/puredata/maxlib/ */
/* */
/* This program is free software; you can redistribute it and/or */
/* modify it under the terms of the GNU General Public License */
/* as published by the Free Software Foundation; either version 2 */
/* of the License, or (at your option) any later version. */
/* */
/* This program is distributed in the hope that it will be useful, */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the */
/* GNU General Public License for more details. */
/* */
/* You should have received a copy of the GNU General Public License */
/* along with this program; if not, write to the Free Software */
/* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* */
/* Based on PureData by Miller Puckette and others. */
/* */
/* ---------------------------------------------------------------------------- */
/*
inlet 1: anything to be routed
inlet 2: anything to be matched to
inlet 3: position to match
out 1: input if match found
out 2: input if match not found
*/
#include "m_pd.h"
static char *version = "nroute v0.1, written by Olaf Matthes <olaf.matthes@gmx.de>";
typedef struct nroute
{
t_object x_obj;
t_outlet *out1;
t_outlet *out2;
t_int pos;
t_atom match;
} t_nroute;
typedef struct proxy
{
t_object obj;
t_int index; /* number of proxy inlet(s) */
t_nroute *x; /* we'll put the other struct in here */
} t_proxy;
/* this is the routine that actually does the routing / matching */
/* it get's called by all other routines that get any input and */
/* even handles the second (proxy) inlet ! */
static void nroute_any(t_nroute *x, t_symbol *s, int argc, t_atom *argv)
{
if(s)
{
if (x->pos == 1 && x->match.a_type == A_SYMBOL && x->match.a_w.w_symbol == s)
outlet_anything (x->out1,s,argc,argv);
else if (x->pos > 1 && x->pos <= argc + 1 &&
argv[x->pos-2].a_type == x->match.a_type &&
argv[x->pos-2].a_w.w_float == x->match.a_w.w_float)
outlet_anything (x->out1,s,argc,argv);
else outlet_anything (x->out2,s,argc,argv);
}
else
{
if (x->pos > 0 && x->pos <= argc &&
argv[x->pos-1].a_type == x->match.a_type &&
argv[x->pos-1].a_w.w_float == x->match.a_w.w_float)
outlet_list (x->out1,0,argc,argv);
else outlet_list (x->out2,0,argc,argv);
}
}
static void nroute_float(t_nroute *x, float f)
{
t_atom a;
SETFLOAT (&a,f);
nroute_any(x,0,1,&a);
}
static void nroute_list(t_nroute *x, t_symbol *s, int argc, t_atom *argv)
{
nroute_any(x,0,argc,argv);
}
static void nroute_setmatch(t_proxy *p, t_symbol *s, int argc, t_atom *argv)
{
t_nroute *x = (t_nroute *)(p->x);
if(argc == 0) /* have to match a symbol */
{
x->match.a_type = A_SYMBOL;
x->match.a_w.w_symbol = s;
}
else /* got a float */
{
if(argc > 1)
{
post("nroute: middle inlet accepts only (float,symbol) for match");
return;
}
x->match.a_type = A_FLOAT;
x->match.a_w.w_float = argv[0].a_w.w_float;
}
}
static void nroute_setpos(t_nroute *x, t_floatarg f)
{
x->pos = (t_int)f;
}
static t_class *nroute_class;
static t_class *proxy_class;
static void *nroute_new(t_symbol *s, int argc, t_atom *argv)
{
t_nroute *x = (t_nroute *)pd_new(nroute_class);
t_proxy *inlet = (t_proxy *)pd_new(proxy_class); /* for the proxy inlet */
#ifndef MAXLIB
post(version);
#endif
inlet->x = x; /* make x visible to the proxy inlets */
x->pos = 1;
x->match.a_type = A_NULL;
if (argc > 2) { error ("nroute: extra arguments"); return 0; }
if (argc > 1) {
if (argv[1].a_type == A_FLOAT) x->pos = argv[1].a_w.w_float;
else { post ("nroute: second argument must be (int) position"); return 0; }
}
if (argc > 0) {
x->match.a_type = argv[0].a_type;
x->match.a_w.w_float = argv[0].a_w.w_float;
}
inlet->index = 0; /* we are going to create a proxy inlet no. 0 */
/* it belongs to the object t_nroute but the destination is t_proxy */
inlet_new(&x->x_obj, &inlet->obj.ob_pd, 0,0);
/* and now a 'normal' third inlet */
inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("right"));
x->out1 = outlet_new(&x->x_obj, gensym("list"));
x->out2 = outlet_new(&x->x_obj, gensym("list"));
return (x);
}
void nroute_setup(void)
{
/* the object's class: */
nroute_class = class_new(gensym("nroute"), (t_newmethod)nroute_new,
0, sizeof(t_nroute), 0, A_GIMME, 0);
/* a class for the proxy inlet: */
proxy_class = class_new(gensym("proxy"), NULL, NULL, sizeof(t_proxy),
CLASS_PD|CLASS_NOINLET, A_NULL);
class_addmethod(nroute_class, (t_method)nroute_setpos, gensym("right"), A_FLOAT, 0);
class_addfloat(nroute_class, nroute_float);
class_addlist(nroute_class, nroute_list);
class_addanything(nroute_class, nroute_any);
class_addanything(proxy_class, nroute_setmatch);
#ifndef MAXLIB
class_sethelpsymbol(nroute_class, gensym("help-nroute.pd"));
#else
class_sethelpsymbol(nroute_class, gensym("maxlib/help-nroute.pd"));
#endif
}
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