Move Diskstream ownership to Track, so that Session no longer holds lists of Diskstreams. Breaks 3.0 file format again.

git-svn-id: svn://localhost/ardour2/branches/3.0@6945 d708f5d6-7413-0410-9779-e7cbd77b26cf

1 files changed, 3 insertions, 0 deletions

diff --git a/libs/ardour/ardour/midi_track.h b/libs/ardour/ardour/midi_track.h
index f4f29398b2..0399492a02 100644
--- a/libs/ardour/ardour/midi_track.h
+++ b/libs/ardour/ardour/midi_track.h
@@ -31,6 +31,7 @@ class Session;
 class MidiDiskstream;
 class MidiPlaylist;
 class RouteGroup;
+class SMFSource;	
 
 class MidiTrack : public Track
 {
@@ -90,6 +91,8 @@ public:
 	bool midi_thru() const { return _midi_thru; }
 	void set_midi_thru (bool yn);
 
+	boost::shared_ptr<SMFSource> write_source (uint32_t n = 0);
+	
 protected:
 	XMLNode& state (bool full);