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-rw-r--r--nroute.c179
1 files changed, 179 insertions, 0 deletions
diff --git a/nroute.c b/nroute.c
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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 */
+
+ 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);
+}
+
+#ifndef MAXLIB
+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);
+#else
+void maxlib_nroute_setup(void)
+{
+ /* the object's class: */
+ nroute_class = class_new(gensym("maxlib_nroute"), (t_newmethod)nroute_new,
+ 0, sizeof(t_nroute), 0, A_GIMME, 0);
+ class_addcreator((t_newmethod)nroute_new, gensym("nroute"), A_GIMME, 0);
+#endif
+ /* a class for the proxy inlet: */
+ proxy_class = class_new(gensym("maxlib_nroute_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
+
+ post(version);
+#else
+ class_sethelpsymbol(nroute_class, gensym("maxlib/nroute-help.pd"));
+#endif
+}