also update LV2 output port displays as part of periodic updates

diff --git a/gtk2_ardour/lv2_plugin_ui.cc b/gtk2_ardour/lv2_plugin_ui.cc
index e2c446ef20555de5b9ee6d1a46e40e67a55f85ad..33fa2c746d1b94468d30fa5d8b65ad453c889abc 100644 (file)
--- a/gtk2_ardour/lv2_plugin_ui.cc
+++ b/gtk2_ardour/lv2_plugin_ui.cc
@@ -180,14 +180,26 @@ LV2PluginUI::output_update()
                }
        }
 
-       if (_inst) {
-               for (Updates::iterator i = _updates.begin(); i != _updates.end(); ++i) {
-                       float val = _lv2->get_parameter (*i);
-                       /* push current value to the GUI */
-                       suil_instance_port_event ((SuilInstance*)_inst, (*i), 4, 0, &val);
-               }
-               _updates.clear ();
+       if (!_inst) {
+               return;
        }
+       
+       /* output ports (values set by DSP) need propagating to GUI */
+
+       uint32_t nports = _output_ports.size();
+       for (uint32_t i = 0; i < nports; ++i) {
+               uint32_t index = _output_ports[i];
+               float val = _lv2->get_parameter(index);
+               suil_instance_port_event ((SuilInstance*)_inst, index, 4, 0, &val);
+       }
+
+       for (Updates::iterator i = _updates.begin(); i != _updates.end(); ++i) {
+               float val = _lv2->get_parameter (*i);
+               /* push current value to the GUI */
+               suil_instance_port_event ((SuilInstance*)_inst, (*i), 4, 0, &val);
+       }
+
+       _updates.clear ();
 }
 
 LV2PluginUI::LV2PluginUI(boost::shared_ptr<PluginInsert> pi,
@@ -359,9 +371,10 @@ LV2PluginUI::lv2ui_instantiate(const std::string& title)
                        _controllables[port] = boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (
                                insert->control(Evoral::Parameter(PluginAutomation, 0, port)));
 
-                       /* FIXME only works with control output ports (which is all we support now anyway) */
-                       if (_controllables[port] && _lv2->parameter_is_control(port) && _lv2->parameter_is_input(port)) {
-                               _controllables[port]->Changed.connect (control_connections, invalidator (*this), boost::bind (&LV2PluginUI::control_changed, this, port), gui_context());
+                       if (_lv2->parameter_is_control(port) && _lv2->parameter_is_input(port)) {
+                               if (_controllables[port]) {
+                                       _controllables[port]->Changed.connect (control_connections, invalidator (*this), boost::bind (&LV2PluginUI::control_changed, this, port), gui_context());
+                               }
                                /* queue for first update ("push") to GUI */
                                _updates.insert (port);
                        }