- int move_track_up(Track *track); // move recordable tracks up
- int move_track_down(Track *track); // move recordable tracks down
- int move_tracks_up(); // move recordable tracks up
- int move_tracks_down(); // move recordable tracks down
+ void roll_tracks(Track *src, Track *dst, int n);
+ int roll_track_up(Track *track);
+ int roll_track_down(Track *track);
+ int roll_tracks_up();
+ int roll_tracks_down();
+ int move_track_up(Track *track);
+ int move_track_down(Track *track);
+ int move_tracks_up();
+ int move_tracks_down();