add StartTouch and EndTouch signals to Plugin class; make PluginInsert handle these...

[ardour.git] / libs / ardour / audio_unit.cc

diff --git a/libs/ardour/audio_unit.cc b/libs/ardour/audio_unit.cc
index a76bcc4aaefea98f9b31861dabedba13627f00b7..431fb99a481630ed5c843d5cccd7a1bbefcf0a4c 100644 (file)
--- a/libs/ardour/audio_unit.cc
+++ b/libs/ardour/audio_unit.cc
@@ -2753,6 +2753,26 @@ AUPlugin::listen_to_parameter (uint32_t param_id)
                return -1;
        } 
 
+       event.mEventType = kAudioUnitEvent_BeginParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerAddEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
+       event.mEventType = kAudioUnitEvent_EndParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerAddEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
        return 0;
 }
 
@@ -2775,6 +2795,26 @@ AUPlugin::end_listen_to_parameter (uint32_t param_id)
                return -1;
        } 
 
+       event.mEventType = kAudioUnitEvent_BeginParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerRemoveEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
+       event.mEventType = kAudioUnitEvent_EndParameterChangeGesture;
+       event.mArgument.mParameter.mAudioUnit = unit->AU();
+       event.mArgument.mParameter.mParameterID = descriptors[param_id].id;
+       event.mArgument.mParameter.mScope = descriptors[param_id].scope;
+       event.mArgument.mParameter.mElement = descriptors[param_id].element;
+
+       if (AUEventListenerRemoveEventType (_parameter_listener, _parameter_listener_arg, &event) != noErr) {
+               return -1;
+       } 
+
        return 0;
 }
 
@@ -2789,17 +2829,19 @@ AUPlugin::parameter_change_listener (void* /*arg*/, void* /*src*/, const AudioUn
 {
         ParameterMap::iterator i;
 
+        if ((i = parameter_map.find (event->mArgument.mParameter.mParameterID)) == parameter_map.end()) {
+                return;
+        }
+        
         switch (event->mEventType) {
         case kAudioUnitEvent_BeginParameterChangeGesture:
+                StartTouch (i->second);
                 break;
         case kAudioUnitEvent_EndParameterChangeGesture:
+                EndTouch (i->second);
                 break;
         case kAudioUnitEvent_ParameterValueChange:
-                i = parameter_map.find (event->mArgument.mParameter.mParameterID);
-
-                if (i != parameter_map.end()) {
-                        ParameterChanged (i->second, new_value);
-                }
+                ParameterChanged (i->second, new_value);
                 break;
         default:
                 break;