Move RouteUI::fan_out to Mixer_UI

The previous version had various issues, in particular
when creating Tracks with an instrument, the RouteUI was not
available when the signal was emitted (likely caused by recent
ee-work of Audio+MIDI and Tape track removal).

However as side-effect fanned-out tracks/busses may now
be ordered before the new instrument route.

This also fixes an edge case of multiple fan-out in case
there is more than one RouteUI instance (mixer, editor-mixer,
meter-bridge).

1 files changed, 1 insertions, 104 deletions

diff --git a/gtk2_ardour/route_ui.cc b/gtk2_ardour/route_ui.cc
index b7b2c88faf..0d7110f87d 100644
--- a/gtk2_ardour/route_ui.cc
+++ b/gtk2_ardour/route_ui.cc
@@ -2315,110 +2315,7 @@ RouteUI::manage_pins ()
 void
 RouteUI::fan_out (bool to_busses, bool group)
 {
-	if (!ARDOUR_UI_UTILS::engine_is_running ()) {
-		return;
-	}
-
-	DisplaySuspender ds;
-	boost::shared_ptr<ARDOUR::Route> route = _route;
-	boost::shared_ptr<PluginInsert> pi = boost::dynamic_pointer_cast<PluginInsert> (route->the_instrument ());
-	assert (pi);
-
-	const uint32_t n_outputs = pi->output_streams ().n_audio ();
-	if (route->n_outputs ().n_audio () != n_outputs) {
-		MessageDialog msg (string_compose (
-					_("The Plugin's number of audio outputs ports (%1) does not match the Tracks's number of audio outputs (%2). Cannot fan out."),
-					n_outputs, route->n_outputs ().n_audio ()));
-		msg.run ();
-		return;
-	}
-
-#define BUSNAME  pd.group_name + "(" + route->name () + ")"
-
-	/* count busses and channels/bus */
-	boost::shared_ptr<Plugin> plugin = pi->plugin ();
-	std::map<std::string, uint32_t> busnames;
-	for (uint32_t p = 0; p < n_outputs; ++p) {
-		const Plugin::IOPortDescription& pd (plugin->describe_io_port (DataType::AUDIO, false, p));
-		std::string bn = BUSNAME;
-		busnames[bn]++;
-	}
-
-	if (busnames.size () < 2) {
-		MessageDialog msg (_("Instrument has only 1 output bus. Nothing to fan out."));
-		msg.run ();
-		return;
-	}
-
-	uint32_t outputs = 2;
-	if (_session->master_out ()) {
-		outputs = std::max (outputs, _session->master_out ()->n_inputs ().n_audio ());
-	}
-
-	route->output ()->disconnect (this);
-	route->panner_shell ()->set_bypassed (true);
-
-	boost::shared_ptr<AutomationControl> msac = route->master_send_enable_controllable ();
-	if (msac) {
-		msac->start_touch (msac->session().transport_sample());
-		msac->set_value (0, PBD::Controllable::NoGroup);
-	}
-
-	RouteList to_group;
-	for (uint32_t p = 0; p < n_outputs; ++p) {
-		const Plugin::IOPortDescription& pd (plugin->describe_io_port (DataType::AUDIO, false, p));
-		std::string bn = BUSNAME;
-		boost::shared_ptr<Route> r = _session->route_by_name (bn);
-		if (!r) {
-			try {
-				if (to_busses) {
-					RouteList rl = _session->new_audio_route (busnames[bn], outputs, NULL, 1, bn, PresentationInfo::AudioBus, PresentationInfo::max_order);
-					r = rl.front ();
-					assert (r);
-				} else {
-					list<boost::shared_ptr<AudioTrack> > tl =
-						_session->new_audio_track (busnames[bn], outputs, NULL, 1, bn, PresentationInfo::max_order, Normal);
-					r = tl.front ();
-					assert (r);
-
-					boost::shared_ptr<ControlList> cl (new ControlList);
-					cl->push_back (r->monitoring_control ());
-					_session->set_controls (cl, (double) MonitorInput, Controllable::NoGroup);
-				}
-			} catch (...) {
-				if (!to_group.empty()) {
-					boost::shared_ptr<RouteList> rl (&to_group);
-					_session->remove_routes (rl);
-				}
-				return;
-			}
-			r->input ()->disconnect (this);
-		}
-		to_group.push_back (r);
-		route->output ()->audio (p)->connect (r->input ()->audio (pd.group_channel).get());
-	}
-#undef BUSNAME
-
-	if (group) {
-		RouteGroup* rg = NULL;
-		const std::list<RouteGroup*>& rgs (_session->route_groups ());
-		for (std::list<RouteGroup*>::const_iterator i = rgs.begin (); i != rgs.end (); ++i) {
-			if ((*i)->name () == pi->name ()) {
-				rg = *i;
-				break;
-			}
-		}
-		if (!rg) {
-			rg = new RouteGroup (*_session, pi->name ());
-			_session->add_route_group (rg);
-			rg->set_gain (false);
-		}
-
-		GroupTabs::set_group_color (rg, route->presentation_info().color());
-		for (RouteList::const_iterator i = to_group.begin(); i != to_group.end(); ++i) {
-			rg->add (*i);
-		}
-	}
+	Mixer_UI::instance()->fan_out (_route, to_busses, group);
 }
 
 bool