return relevant AutomationControl for send_level_controllable() in Ardour

diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index ff765ad89d865e0e36489f4dfe96632491429318..9c724980f0e650970c7886c3f2cc0fe773e65654 100644 (file)
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -5512,7 +5512,11 @@ Route::send_level_controllable (uint32_t n) const
        const uint32_t port_id = port_channel_post_aux1_level + (2*n); // gtk2_ardour/mixbus_ports.h
        return boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (plug->control (Evoral::Parameter (ARDOUR::PluginAutomation, 0, port_id)));
 #else
-       return boost::shared_ptr<AutomationControl>();
+       boost::shared_ptr<Send> s = boost::dynamic_pointer_cast<Send>(nth_send (n));
+       if (!s) {
+               return boost::shared_ptr<AutomationControl>();
+       }
+       return s->gain_control ();
 #endif
 }
 
@@ -5531,6 +5535,11 @@ Route::send_enable_controllable (uint32_t n) const
        const uint32_t port_id = port_channel_post_aux1_asgn + (2*n); // gtk2_ardour/mixbus_ports.h
        return boost::dynamic_pointer_cast<ARDOUR::AutomationControl> (plug->control (Evoral::Parameter (ARDOUR::PluginAutomation, 0, port_id)));
 #else
+       /* although Ardour sends have enable/disable as part of the Processor
+          API, it is not exposed as a controllable.
+
+          XXX: we should fix this.
+       */
        return boost::shared_ptr<AutomationControl>();
 #endif
 }