Cont'd work on loading old route templates

This builds on top of 51d2bb:
 * v6 routes templates/states have a version per <Route>
 * older route-states are assumed to be from ardour-5
   Stateful::loading_state_version 3002,
   unless specified otherwise

1 files changed, 17 insertions, 1 deletions

diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index c88d85cd77..82b0e14073 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -2948,7 +2948,23 @@ Session::new_route_from_template (uint32_t how_many, PresentationInfo::order_t i
 			*/
 			node_copy.remove_node_and_delete (X_("Controllable"), X_("name"), X_("solo"));
 
-			boost::shared_ptr<Route> route (XMLRouteFactory (node_copy, Stateful::loading_state_version));
+			/* New v6 templates do have a version in the Route-Template,
+			 * we assume that all older, unversioned templates are
+			 * from Ardour 5.x
+			 * when Stateful::loading_state_version was 3002
+			 */
+			int version = 3002;
+			node.get_property (X_("version"), version);
+
+			boost::shared_ptr<Route> route;
+
+			if (version < 3000) {
+				route = XMLRouteFactory_2X (node_copy, version);
+			} else if (version < 5000) {
+				route = XMLRouteFactory_3X (node_copy, version);
+			} else {
+				route = XMLRouteFactory (node_copy, version);
+			}
 
 			if (route == 0) {
 				error << _("Session: cannot create track/bus from template description") << endmsg;