Prevent adding aux-sends to master or monitor

diff --git a/gtk2_ardour/processor_box.cc b/gtk2_ardour/processor_box.cc
index 9beb7336174aaf39aadaa1fb4be09d496076b2f4..1eb68259b61c208292e6eeceeee6d8c56354a34d 100644 (file)
--- a/gtk2_ardour/processor_box.cc
+++ b/gtk2_ardour/processor_box.cc
@@ -2025,9 +2025,15 @@ ProcessorBox::build_possible_aux_menu ()
        MenuList& items = menu->items();
 
        for (RouteList::iterator r = rl->begin(); r != rl->end(); ++r) {
-               if (!_route->internal_send_for (*r) && *r != _route) {
-                       items.push_back (MenuElemNoMnemonic ((*r)->name(), sigc::bind (sigc::ptr_fun (ProcessorBox::rb_choose_aux), boost::weak_ptr<Route>(*r))));
+               if ((*r)->is_master() || (*r)->is_monitor () || *r == _route) {
+                       /* don't allow sending to master or monitor or to self */
+                       continue;
+               }
+               if (_route->internal_send_for (*r)) {
+                       /* aux-send to target already exists */
+                       continue;
                }
+               items.push_back (MenuElemNoMnemonic ((*r)->name(), sigc::bind (sigc::ptr_fun (ProcessorBox::rb_choose_aux), boost::weak_ptr<Route>(*r))));
        }
 
        return menu;