3 files changed, 9 insertions, 0 deletions
diff --git a/libs/ardour/ardour/audio_track.h b/libs/ardour/ardour/audio_track.h
index 01cbb633ae..978a346d11 100644
--- a/libs/ardour/ardour/audio_track.h
+++ b/libs/ardour/ardour/audio_track.h
@@ -70,6 +70,9 @@ class AudioTrack : public Track
 	int _set_state (const XMLNode&, int);
 
   private:
+
+	boost::shared_ptr<Diskstream> diskstream_factory (XMLNode const &);
+	
 	int  deprecated_use_diskstream_connections ();
 	void set_state_part_two ();
 	void set_state_part_three ();
diff --git a/libs/ardour/ardour/midi_track.h b/libs/ardour/ardour/midi_track.h
index 2337cdcbed..3d1ef558dc 100644
--- a/libs/ardour/ardour/midi_track.h
+++ b/libs/ardour/ardour/midi_track.h
@@ -118,6 +118,9 @@ protected:
 	bool send_silence () const;
 
   private:
+
+	virtual boost::shared_ptr<Diskstream> diskstream_factory (XMLNode const &);
+	
 	boost::shared_ptr<MidiDiskstream> midi_diskstream () const;
 
 	void write_out_of_band_data (BufferSet& bufs, framepos_t start_frame, framepos_t end_frame, framecnt_t nframes);
diff --git a/libs/ardour/ardour/track.h b/libs/ardour/ardour/track.h
index 8f94625818..e3ee892986 100644
--- a/libs/ardour/ardour/track.h
+++ b/libs/ardour/ardour/track.h
@@ -217,6 +217,9 @@ class Track : public Route, public PublicDiskstream
 	framecnt_t check_initial_delay (framecnt_t nframes, framecnt_t&);
 
 private:
+
+	virtual boost::shared_ptr<Diskstream> diskstream_factory (XMLNode const &) = 0;
+	
 	void diskstream_playlist_changed ();
 	void diskstream_record_enable_changed ();
 	void diskstream_speed_changed ();