#include <string>
#include <set>
+#include <glib.h>
+
#include <boost/utility.hpp>
-#include <sigc++/signal.h>
#include "pbd/statefuldestructible.h"
#include "ardour/ardour.h"
#include "ardour/session_object.h"
#include "ardour/data_type.h"
-#include "ardour/readable.h"
namespace ARDOUR {
class Session;
-class Source : public SessionObject, public boost::noncopyable
+class Source : public SessionObject
{
public:
enum Flag {
time_t timestamp() const { return _timestamp; }
void stamp (time_t when) { _timestamp = when; }
- virtual sframes_t length (sframes_t pos) const = 0;
- virtual void update_length (sframes_t pos, sframes_t cnt) = 0;
+ 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 nframes64_t natural_position() const { return 0; }
+ virtual framepos_t natural_position() const { return 0; }
void mark_for_remove();
virtual bool set_destructive (bool /*yn*/) { return false; }
virtual bool length_mutable() const { return false; }
- void use () { _in_use++; }
- void disuse () { if (_in_use) { _in_use--; } }
-
- 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;
bool has_been_analysed() const;
virtual bool can_be_analysed() const { return false; }
virtual void set_been_analysed (bool yn);
virtual bool check_for_analysis_data_on_disk();
- sigc::signal<void> AnalysisChanged;
+ PBD::Signal0<void> AnalysisChanged;
AnalysisFeatureList transients;
std::string get_transients_path() const;
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;
mutable Glib::Mutex _lock;
mutable Glib::Mutex _analysis_lock;
Glib::Mutex _playlist_lock;
+ gint _use_count; /* atomic */
private:
- uint32_t _in_use;
void fix_writable_flags ();
};