- void use () { _in_use++; }
- void disuse () { if (_in_use) { _in_use--; } }
-
- void add_playlist (boost::shared_ptr<ARDOUR::Playlist>);
- void remove_playlist (boost::weak_ptr<ARDOUR::Playlist>);
-
- uint32_t used() const;
-
- static sigc::signal<void,Source*> SourceCreated;
- sigc::signal<void,boost::shared_ptr<Source> > Switched;
+ static PBD::Signal1<void,Source*> SourceCreated;
+ PBD::Signal1<void,boost::shared_ptr<Source> > Switched;