DlgAudioUnit: Wait for instantiation before loading UI

This fixes a race condition
mixxxdj · Nov 30, 2024 · fbdc633 · fbdc633
1 parent 750aa99
commit fbdc633
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/src/effects/backends/audiounit/dlgaudiounit.mm b/src/effects/backends/audiounit/dlgaudiounit.mm
@@ -25,6 +25,13 @@
     qDebug() << "Loading UI of Audio Unit" << name << "with width" << size.width
              << "and height" << size.height;
 
+    const int TIMEOUT_MS = 2000;
+    if (!manager->waitForAudioUnit(TIMEOUT_MS)) {
+        return "Instantiating the UI took more than " +
+                QString::number(TIMEOUT_MS) +
+                "ms, try closing and reopening the UI!";
+    }
+
     AudioUnit _Nullable audioUnit = manager->getAudioUnit();
 
     if (audioUnit == nil) {