1 files changed, 115 insertions, 0 deletions
diff --git a/src/demultiplex.c b/src/demultiplex.c
new file mode 100644
index 0000000..ff26b5d
--- /dev/null
+++ b/src/demultiplex.c
@@ -0,0 +1,115 @@
+/******************************************************
+ *
+ * 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
+ *
+ ******************************************************/
+
+
+/* 1509:forum::für::umläute:2000 */
+
+/*
+  demux :  multiplex the input to a specified output  
+
+  TODO::  mux   :  demultiplex a specified input to the output
+*/
+
+#include "zexy.h"
+#include <stdio.h>
+
+/* ------------------------- demux ------------------------------- */
+
+/*
+  a demultiplexer
+*/
+
+static t_class *demux_class;
+
+typedef struct _demux
+{
+  t_object x_obj;
+
+  int n_out;
+  t_outlet **out, *selected;
+
+
+} t_demux;
+
+static void demux_select(t_demux *x, t_float f)
+{
+  int n = ( (f<0) || (f>x->n_out) ) ? 0 : f;
+  x->selected = x->out[n];
+}
+
+static void demux_list(t_demux *x, t_symbol *s, int argc, t_atom *argv)
+{
+  switch (argc) {
+  case 0:
+    outlet_bang(x->selected);
+    break;
+  case 1:
+    switch (argv->a_type) {
+    case A_FLOAT:
+      outlet_float(x->selected, atom_getfloat(argv));
+      break;
+    case A_SYMBOL:
+      outlet_symbol(x->selected, atom_getsymbol(argv));
+      break;
+    case A_POINTER:
+       outlet_pointer(x->selected, argv->a_w.w_gpointer);
+       break;
+    default:
+      outlet_list(x->selected, s, argc, argv);
+    }
+    break;
+  default:
+    outlet_list(x->selected, s, argc, argv);
+  }
+}
+static void demux_any(t_demux *x, t_symbol *s, int argc, t_atom *argv)
+{
+  outlet_anything(x->selected, s, argc, argv);
+}
+
+static void *demux_new(t_symbol *s, int argc, t_atom *argv)
+{
+  t_demux *x = (t_demux *)pd_new(demux_class);
+  int n = (argc < 2)?2:argc;
+
+  x->n_out = n - 1;
+  
+  inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("select"));
+  x->out = (t_outlet **)getbytes(n * sizeof(t_outlet *));
+
+  for (n=0; n<=x->n_out; n++) {
+    x->out[n] = outlet_new(&x->x_obj, 0);
+  }
+
+  x->selected = x->out[0];
+
+  return (x);
+}
+
+void demultiplex_setup(void)
+{
+  demux_class = class_new(gensym("demultiplex"), (t_newmethod)demux_new,
+			      0, sizeof(t_demux), 0, A_GIMME,  0);
+  class_addcreator((t_newmethod)demux_new, gensym("demux"), A_GIMME, 0);
+  
+  class_addanything (demux_class, demux_any);
+  class_addlist     (demux_class, demux_list);
+
+  class_addmethod   (demux_class, (t_method)demux_select, gensym("select"), A_DEFFLOAT, 0);
+
+  class_sethelpsymbol(demux_class, gensym("zexy/demultiplex"));
+  zexy_register("demultiplex");
+}