- Changed IO's vector<Port*>'s to PortList

[ardour.git] / libs / ardour / ardour / source.h

diff --git a/libs/ardour/ardour/source.h b/libs/ardour/ardour/source.h
index f57ea7985447d80930205dd44c9dd1d9adca2695..dc1e93f8f29a8d5c1562fd83e89d2ee2d7a0826c 100644 (file)
--- a/libs/ardour/ardour/source.h
+++ b/libs/ardour/ardour/source.h
@@ -46,9 +46,16 @@ class Source : public Stateful, public sigc::trackable
        uint32_t use_cnt() const { return _use_cnt; }
        void use ();
        void release ();
+       
+       virtual void mark_for_remove() = 0;
 
        time_t timestamp() const { return _timestamp; }
        void stamp (time_t when) { _timestamp = when; }
+       
+       /** @return the number of items in this source */
+       jack_nframes_t length() const { return _length; }
+
+       virtual jack_nframes_t natural_position() const { return 0; }
 
        XMLNode& get_state ();
        int set_state (const XMLNode&);
@@ -56,9 +63,12 @@ class Source : public Stateful, public sigc::trackable
        sigc::signal<void,Source *> GoingAway;
 
   protected:
+       void update_length (jack_nframes_t pos, jack_nframes_t cnt);
+
        string            _name;
        uint32_t          _use_cnt;
        time_t            _timestamp;
+       jack_nframes_t    _length;
 
   private:
        PBD::ID _id;