Use a weak_ptr rather than a bald pointer for _midi_source in MidiModel.

git-svn-id: svn://localhost/ardour2/branches/3.0@8228 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 4 insertions, 4 deletions

diff --git a/libs/ardour/ardour/midi_model.h b/libs/ardour/ardour/midi_model.h
index e959535a36..27ffa4d8a2 100644
--- a/libs/ardour/ardour/midi_model.h
+++ b/libs/ardour/ardour/midi_model.h
@@ -51,7 +51,7 @@ class MidiModel : public AutomatableSequence<Evoral::MusicalTime> {
 public:
 	typedef Evoral::MusicalTime TimeType;
 
-	MidiModel(MidiSource* s);
+	MidiModel (boost::shared_ptr<MidiSource>);
 
 	NoteMode note_mode() const { return (percussive() ? Percussive : Sustained); }
 	void set_note_mode(NoteMode mode) { set_percussive(mode == Percussive); };
@@ -140,8 +140,8 @@ public:
 
 	PBD::Signal0<void> ContentsChanged;
 
-	const MidiSource* midi_source() const { return _midi_source; }
-	void set_midi_source (MidiSource *);
+	boost::shared_ptr<const MidiSource> midi_source ();
+	void set_midi_source (boost::shared_ptr<MidiSource>);
 
 	boost::shared_ptr<Evoral::Note<TimeType> > find_note (NotePtr);
 	boost::shared_ptr<Evoral::Note<TimeType> > find_note (gint note_id);
@@ -181,7 +181,7 @@ private:
 	PBD::ScopedConnectionList _midi_source_connections;
 
 	// We cannot use a boost::shared_ptr here to avoid a retain cycle
-	MidiSource* _midi_source;
+	boost::weak_ptr<MidiSource> _midi_source;
         InsertMergePolicy _insert_merge_policy;
 };