more tweaks to correctly (or more correctly) reload disk reader buffers when loop fade choice changes

libs/ardour/disk_reader.cc

@@ -794,6 +794,8 @@ DiskReader::audio_read (PBD::PlaybackBuffer<Sample>*rb,
 
 			/* Looping: do something (maybe) about the loop boundaries */
 
+			cerr << name() << " Read with lfc  = " << enum_2_string (Config->get_loop_fade_choice()) << endl;
+
 			switch (Config->get_loop_fade_choice()) {
 			case NoLoopFade:
 				break;

libs/ardour/session.cc

@@ -1415,16 +1415,16 @@ Session::auto_loop_changed (Location* location)
 
 	const bool rolling = transport_rolling ();
 
+	boost::shared_ptr<RouteList> r = routes.reader ();
+
+	for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
+		(*i)->reload_loop ();
+	}
+
 	if (rolling) {
 
 		if (play_loop) {
 
-			boost::shared_ptr<RouteList> r = routes.reader ();
-
-			for (RouteList::iterator i = r->begin(); i != r->end(); ++i) {
-				(*i)->reload_loop ();
-			}
-
 			if (_transport_sample < location->start() || _transport_sample > location->end()) {
 				// new loop range excludes current transport
 				// sample => relocate to beginning of loop and roll.

libs/ardour/session_state.cc

@@ -4148,6 +4148,10 @@ Session::config_changed (std::string p, bool ours)
 				remove_monitor_section ();
 			}
 		}
+	} else if (p == "loop-fade-choice") {
+		cerr << "LFC change, change auto-loop\n";
+		last_loopend = 0; /* force locate to refill buffers with new loop boundary data */
+		auto_loop_changed (_locations->auto_loop_location());
 	}
 
 	set_dirty ();