From b2d4c731e82c5267bc41d91de9104bef04316380 Mon Sep 17 00:00:00 2001
From: Paul Davis <paul@linuxaudiosystems.com>
Date: Tue, 10 Feb 2015 19:48:28 -0500
Subject: [PATCH] properly activating MIDI parsing for traced ports

---
 gtk2_ardour/midi_tracer.cc | 7 +++++++
 gtk2_ardour/midi_tracer.h  | 6 ++++++
 2 files changed, 13 insertions(+)

diff --git a/gtk2_ardour/midi_tracer.cc b/gtk2_ardour/midi_tracer.cc
index cbf500ff99..aeb6c987e3 100644
--- a/gtk2_ardour/midi_tracer.cc
+++ b/gtk2_ardour/midi_tracer.cc
@@ -179,6 +179,8 @@ MidiTracer::port_changed ()
 
 		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 {
@@ -190,6 +192,11 @@ void
 MidiTracer::disconnect ()
 {
 	_parser_connection.disconnect ();
+
+	if (traced_port) {
+		traced_port->set_trace_on (false);
+		traced_port.reset ();
+	}
 }
 
 void
diff --git a/gtk2_ardour/midi_tracer.h b/gtk2_ardour/midi_tracer.h
index 14234d6528..8a7d8762d9 100644
--- a/gtk2_ardour/midi_tracer.h
+++ b/gtk2_ardour/midi_tracer.h
@@ -39,6 +39,10 @@ namespace MIDI {
 	class Parser;
 }
 
+namespace ARDOUR {
+	class MidiPort;
+}
+
 class MidiTracer : public ArdourWindow
 {
   public:
@@ -87,6 +91,8 @@ class MidiTracer : public ArdourWindow
 	void disconnect ();
 	PBD::ScopedConnection _parser_connection;
 	PBD::ScopedConnection _manager_connection;
+
+	boost::shared_ptr<ARDOUR::MidiPort> traced_port;
 };
 
 #endif /* __ardour_gtk_midi_tracer_h__ */