1 files changed, 6 insertions, 0 deletions
diff --git a/libs/ardour/ardour/speaker.h b/libs/ardour/ardour/speaker.h
index 8bf1556936..7387a03c38 100644
--- a/libs/ardour/ardour/speaker.h
+++ b/libs/ardour/ardour/speaker.h
@@ -20,12 +20,15 @@
 #define __libardour_speaker_h__
 
 #include "pbd/cartesian.h"
+#include "pbd/signals.h"
 
 namespace ARDOUR { 
 
 class Speaker {
 public:
 	Speaker (int, const PBD::AngularVector& position);
+	Speaker (const Speaker &);
+	Speaker& operator= (const Speaker &);
         
 	void move (const PBD::AngularVector& new_position);
 
@@ -34,6 +37,9 @@ public:
 
 	int id;
 
+	/** emitted when this speaker's position has changed */
+	PBD::Signal0<void> PositionChanged;
+
 private:
 	PBD::CartesianVector _coords;
 	PBD::AngularVector   _angles;