Convert Disksteam & Playlists from old 2.x sessions

libs/ardour/ardour/session.h

@@ -1817,6 +1817,9 @@ private:
 	/* CURVES and AUTOMATION LISTS */
 	std::map<PBD::ID, AutomationList*> automation_lists;
 
+	/** load 2.X Sessions. Diskstream-ID to playlist-name mapping */
+	std::map<PBD::ID, std::string> _diskstreams_2X;
+
 	/* DEFAULT FADE CURVES */
 
 	float default_fade_steepness;

libs/ardour/ardour/session_playlists.h

@@ -75,6 +75,8 @@ private:
 	void track (bool, boost::weak_ptr<Playlist>);
 	void update_tracking ();
 
+	void update_orig_2X (PBD::ID, PBD::ID);
+
 	void find_equivalent_playlist_regions (boost::shared_ptr<Region>, std::vector<boost::shared_ptr<Region> >& result);
 	void update_after_tempo_map_change ();
 	void add_state (XMLNode*, bool save_template, bool include_unused);

libs/ardour/playlist.cc

@@ -2289,8 +2289,9 @@ Playlist::set_state (const XMLNode& node, int version)
 		_set_sort_id ();
 	}
 
-	/* XXX legacy session: fix up later */
+	/* XXX legacy session: fix up later - :: update_orig_2X() */
 	node.get_property (X_("orig-diskstream-id"), _orig_track_id);
+	node.get_property (X_("orig_diskstream_id"), _orig_track_id);
 
 	node.get_property (X_("orig-track-id"), _orig_track_id);
 	node.get_property (X_("frozen"), _frozen);

libs/ardour/session_playlists.cc

@@ -244,6 +244,24 @@ SessionPlaylists::unassigned (std::list<boost::shared_ptr<Playlist> > & list)
 	}
 }
 
+void
+SessionPlaylists::update_orig_2X (PBD::ID old_orig, PBD::ID new_orig)
+{
+	Glib::Threads::Mutex::Lock lm (lock);
+
+	for (List::iterator i = playlists.begin(); i != playlists.end(); ++i) {
+		if ((*i)->get_orig_track_id() == old_orig) {
+			(*i)->set_orig_track_id (new_orig);
+		}
+	}
+
+	for (List::iterator i = unused_playlists.begin(); i != unused_playlists.end(); ++i) {
+		if ((*i)->get_orig_track_id() == old_orig) {
+			(*i)->set_orig_track_id (new_orig);
+		}
+	}
+}
+
 void
 SessionPlaylists::get (vector<boost::shared_ptr<Playlist> >& s) const
 {

libs/ardour/session_state.cc

@@ -1685,6 +1685,20 @@ Session::set_state (const XMLNode& node, int version)
 		_vca_manager->set_state (*child, version);
 	}
 
+	if (version < 3000) {
+		if ((child = find_named_node (node, "DiskStreams"))) {
+			for (XMLNodeList::const_iterator n = child->children ().begin (); n != child->children ().end (); ++n) {
+				if ((*n)->name() == "AudioDiskstream" || (*n)->name() == "DiskStream") {
+					std::string diskstream_id;
+					std::string playlist_name;
+					if ((*n)->get_property ("playlist", playlist_name) && (*n)->get_property ("id", diskstream_id)) {
+						_diskstreams_2X [PBD::ID(diskstream_id)] = playlist_name;
+					}
+				}
+			}
+		}
+	}
+
 	if ((child = find_named_node (node, "Routes")) == 0) {
 		error << _("Session: XML state has no routes section") << endmsg;
 		goto out;
@@ -1695,6 +1709,8 @@ Session::set_state (const XMLNode& node, int version)
 	/* Now that we Tracks have been loaded and playlists are assigned */
 	_playlists->update_tracking ();
 
+	_diskstreams_2X.clear ();
+
 	/* Now that we have Routes and masters loaded, connect them if appropriate */
 
 	Slavable::Assign (_vca_manager); /* EMIT SIGNAL */
@@ -1941,12 +1957,15 @@ Session::XMLRouteFactory_2X (const XMLNode& node, int version)
 
 	if (ds_prop) {
 
-		/* see comment in current ::set_state() regarding diskstream
-		 * state and DiskReader/DiskWRiter.
-		 */
+		PBD::ID ds_id (ds_prop->value ());
+		std::string playlist_name = _diskstreams_2X[ds_id];
 
-		error << _("Could not find diskstream for route") << endmsg;
-		return boost::shared_ptr<Route> ();
+		boost::shared_ptr<Playlist> pl = playlists()->by_name (playlist_name);
+
+		if (playlist_name.empty () || !pl) {
+			error << _("Could not find diskstream for route") << endmsg;
+			return boost::shared_ptr<Route> ();
+		}
 
 		boost::shared_ptr<Track> track;
 
@@ -1960,10 +1979,15 @@ Session::XMLRouteFactory_2X (const XMLNode& node, int version)
 			return ret;
 		}
 
+		track->use_playlist (DataType::AUDIO, pl);
+
 		if (track->set_state (node, version)) {
 			return ret;
 		}
 
+		pl->set_orig_track_id (track->id());
+		playlists()->update_orig_2X (ds_id, track->id());
+
 		BOOST_MARK_TRACK (track);
 		ret = track;