- if (p) {
- p->parser()->any.connect_same_thread (_parser_connection, boost::bind (&MidiTracer::tracer, this, _1, _2, _3));
+ boost::shared_ptr<ARDOUR::MidiPort> mp = boost::dynamic_pointer_cast<ARDOUR::MidiPort> (p);
+
+ if (mp) {
+ mp->self_parser().any.connect_same_thread (_parser_connection, boost::bind (&MidiTracer::tracer, this, _1, _2, _3));
+ mp->set_trace_on (true);
+ traced_port = mp;
+ }
+
+ } else {
+ async->parser()->any.connect_same_thread (_parser_connection, boost::bind (&MidiTracer::tracer, this, _1, _2, _3));