refine self-automating plugin interface

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

diff --git a/libs/ardour/ardour/source.h b/libs/ardour/ardour/source.h
index 8bf66f8b8d23a6c7356141dd06c69c212b2f7899..eb204715a1fefb7a349a4bd1e3a11cbd082fadc6 100644 (file)
--- a/libs/ardour/ardour/source.h
+++ b/libs/ardour/ardour/source.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2000 Paul Davis 
+    Copyright (C) 2000 Paul Davis
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -15,64 +15,120 @@
     along with this program; if not, write to the Free Software
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
-    $Id$
 */
 
 #ifndef __ardour_source_h__
 #define __ardour_source_h__
 
 #include <string>
+#include <set>
 
-#include <sigc++/signal.h>
+#include <glibmm/threads.h>
 
-#include <pbd/statefuldestructible.h> 
+#include <boost/utility.hpp>
+#include "pbd/statefuldestructible.h"
 
-#include <ardour/ardour.h>
-#include <ardour/data_type.h>
+#include "ardour/ardour.h"
+#include "ardour/session_object.h"
+#include "ardour/data_type.h"
 
 namespace ARDOUR {
 
 class Session;
 
-class Source : public PBD::StatefulDestructible
+class LIBARDOUR_API Source : public SessionObject
 {
   public:
-       Source (Session&, std::string name, DataType type);
+       enum Flag {
+               Writable = 0x1,
+               CanRename = 0x2,
+               Broadcast = 0x4,
+               Removable = 0x8,
+               RemovableIfEmpty = 0x10,
+               RemoveAtDestroy = 0x20,
+               NoPeakFile = 0x40,
+               Destructive = 0x80,
+               Empty = 0x100, /* used for MIDI only */
+               RF64_RIFF = 0x200,
+       };
+
+       typedef Glib::Threads::Mutex::Lock Lock;
+
+       Source (Session&, DataType type, const std::string& name, Flag flags=Flag(0));
        Source (Session&, const XMLNode&);
-       
-       virtual ~Source ();
 
-       std::string name() const { return _name; }
-       int set_name (std::string str, bool destructive);
+       virtual ~Source ();
 
        DataType type() { return _type; }
 
        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; }
+       virtual bool       empty () const = 0;
+       virtual framecnt_t length (framepos_t pos) const = 0;
+       virtual void       update_length (framecnt_t cnt) = 0;
+
+       virtual framepos_t natural_position() const { return 0; }
+
+       void mark_for_remove();
 
-       virtual void mark_for_remove() = 0;
-       virtual void mark_streaming_write_completed () = 0;
+       virtual void mark_streaming_write_started (const Lock& lock) {}
+       virtual void mark_streaming_write_completed (const Lock& lock) = 0;
+
+       virtual void session_saved() {}
 
        XMLNode& get_state ();
-       int set_state (const XMLNode&);
-       
-       static sigc::signal<void,Source*> SourceCreated;
+       int set_state (const XMLNode&, int version);
 
-  protected:
-       void update_length (jack_nframes_t pos, jack_nframes_t cnt);
+       bool         destructive() const       { return (_flags & Destructive); }
+       bool         writable () const;
+       virtual bool set_destructive (bool /*yn*/) { return false; }
+       virtual bool length_mutable() const    { return false; }
+
+       static PBD::Signal1<void,Source*>             SourceCreated;
+
+       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();
 
-       Session&          _session;
-       string            _name;
-       DataType          _type;
-       time_t            _timestamp;
-       jack_nframes_t    _length;
+       PBD::Signal0<void> AnalysisChanged;
+
+       AnalysisFeatureList transients;
+       std::string get_transients_path() const;
+       int load_transients (const std::string&);
+
+       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::Threads::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 (const_cast<gint*>(&_use_count)); }
+       bool used() const { return use_count() > 0; }
+       uint32_t level() const { return _level; }
+
+       std::string ancestor_name() { return _ancestor_name.empty() ? name() : _ancestor_name; }
+       void set_ancestor_name(const std::string& name) { _ancestor_name = name; }
+
+  protected:
+       DataType            _type;
+       Flag                _flags;
+       time_t              _timestamp;
+       framepos_t          _timeline_position;
+       bool                _analysed;
+        mutable Glib::Threads::Mutex _lock;
+        mutable Glib::Threads::Mutex _analysis_lock;
+       gint                _use_count; /* atomic */
+       uint32_t            _level; /* how deeply nested is this source w.r.t a disk file */
+       std::string         _ancestor_name;
 
   private:
+       void fix_writable_flags ();
 };
 
 }