quicklevel: thread safety (oops), don't run if no UI instance

notes

@@ -41,15 +41,17 @@ TODO {
         add ,XX support to global tempo
     }
     
-    - actual config file loading/saving
+    solo gadget {
+        interprets incoming commands as monophonic with portamento
+        probably not super useful for tracked things but good for playing live
+    }
+    
     color scheme load/save
     
-    - indexer abstraction for audioports (assign/add std::pair<float, float>)
     maybe a similar abstraction for processing notes to what commandreader does
     
     maybe interpolate between LUT levels
     
-    
     bugs to fix {
         PLAYBACK BREAKS AFTER FIRST PLAY??? {
             doesn't happen in Lovely Storm; only where Capaxitor is used??
@@ -58,6 +60,7 @@ TODO {
             seems to be only with the Maybe sample??? idk
         }
         playback after stopping immediately after a note in the first pattern played sometimes skips that note
+        ^ probably due to note IDs; randomize starting point on each playback start?
         things can apparently be hooked up cyclically, which completely breaks the queue
         
         pattern switching is slow when changing (especially increasing) number of rows; set fixed page size to avoid reallocation?
@@ -86,13 +89,15 @@ TODO {
         (the simple things:)
         - gain and panning gadget
         - note transpose
-        volume meter
+        - volume meter
         
         "wrap clipper" (gain up, then wrap around +-1.0, then gain down)
         
         Polyplexer (splits a single command input into several monophonic outputs and keeps track of individual notes between them)
         
-        probably three sorts of sampler (quick drum sequencer, quick single-sample "wavetable", then the full-on tracker sampler later on)
+        - quick drum sequencer (BeatPad)
+        - quick single-sample "wavetable" (Capaxitor)
+        full-fat tracker sampler at some point
     }
 }
 

xybrid/nodes/gadget/quicklevel.cpp

@@ -64,10 +64,11 @@ void QuickLevel::release() {
     lv[1][0] = 0;
     lv[1][1] = 0;
 
-    if (obj) obj->scene()->update();
+    if (obj) QMetaObject::invokeMethod(obj->scene(), "update", Qt::QueuedConnection);
 }
 
 void QuickLevel::process() {
+    if (!obj) return;
     auto in = std::static_pointer_cast<AudioPort>(port(Port::Input, Port::Audio, 0));
     in->pull();
     size_t ts = audioEngine->curTickSize();
@@ -90,7 +91,7 @@ void QuickLevel::process() {
         lv[1][1] = std::max(lv[1][1], f.r);
     }
 
-    if (obj) obj->scene()->update();
+    if (obj) QMetaObject::invokeMethod(obj->scene(), "update", Qt::QueuedConnection);
 }
 
 // clear levels on port disconnect