Remove some unused code.

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

diff --git a/libs/ardour/ardour/source.h b/libs/ardour/ardour/source.h
index 83366bbb78ea73eb13bdbab6f080312a445061b0..64dd88d094fd5492326715a0816fbe2c327d0e39 100644 (file)
--- a/libs/ardour/ardour/source.h
+++ b/libs/ardour/ardour/source.h
@@ -23,13 +23,14 @@
 #include <string>
 #include <set>
 
+#include <glib.h>
+
 #include <boost/utility.hpp>
 #include "pbd/statefuldestructible.h"
 
 #include "ardour/ardour.h"
 #include "ardour/session_object.h"
 #include "ardour/data_type.h"
-#include "ardour/readable.h"
 
 namespace ARDOUR {
 
@@ -59,10 +60,11 @@ class Source : public SessionObject
        time_t timestamp() const { return _timestamp; }
        void stamp (time_t when) { _timestamp = when; }
 
+       virtual bool       empty () const = 0;
        virtual framecnt_t length (framepos_t pos) const = 0;
        virtual void       update_length (framepos_t pos, framecnt_t cnt) = 0;
 
-       virtual const Glib::ustring& path() const = 0;
+       virtual const std::string& path() const = 0;
 
        virtual framepos_t natural_position() const { return 0; }
 
@@ -82,7 +84,6 @@ class Source : public SessionObject
        virtual bool length_mutable() const    { return false; }
 
        static PBD::Signal1<void,Source*>             SourceCreated;
-       PBD::Signal1<void,boost::shared_ptr<Source> > Switched;
 
        bool has_been_analysed() const;
        virtual bool can_be_analysed() const { return false; }
@@ -95,23 +96,29 @@ class Source : public SessionObject
        std::string get_transients_path() const;
        int load_transients (const std::string&);
 
-       sframes_t    timeline_position() const { return _timeline_position; }
-       virtual void set_timeline_position (sframes_t pos);
+       framepos_t    timeline_position() const { return _timeline_position; }
+       virtual void set_timeline_position (framepos_t pos);
 
        void set_allow_remove_if_empty (bool yn);
 
        Glib::Mutex& mutex()       { return _lock; }
        Flag         flags() const { return _flags; }
 
+        virtual void inc_use_count ();
+        virtual void dec_use_count ();
+        int  use_count() const { return g_atomic_int_get (&_use_count); }
+        bool used() const { return use_count() > 0; }
+
   protected:
        DataType            _type;
        Flag                _flags;
        time_t              _timestamp;
-       sframes_t           _timeline_position;
+       framepos_t           _timeline_position;
        bool                _analysed;
        mutable Glib::Mutex _lock;
        mutable Glib::Mutex _analysis_lock;
        Glib::Mutex         _playlist_lock;
+        gint                _use_count; /* atomic */
 
   private:
        void fix_writable_flags ();