Store missed latency call and report after activate()

free-audio · Feb 26, 2024 · 45b69bc · 45b69bc
1 parent 91b1d32
commit 45b69bc
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Showing 2 changed files with 17 additions and 3 deletions.
diff --git a/src/wrapasvst3.cpp b/src/wrapasvst3.cpp
@@ -87,6 +87,11 @@ tresult PLUGIN_API ClapAsVst3::setActive(TBool state)
         _expressionmap & clap_supported_note_expressions::AS_VST3_NOTE_EXPRESSION_TUNING);
     updateAudioBusses();
 
+    if (_missedLatencyRequest)
+    {
+      latency_changed();
+    }
+
     _os_attached.on();
   }
   if (!state)
@@ -132,11 +137,19 @@ tresult PLUGIN_API ClapAsVst3::getState(IBStream* state)
 
 uint32 PLUGIN_API ClapAsVst3::getLatencySamples()
 {
-  if (_plugin->_ext._latency && _active)
+  if (!_plugin->_ext._latency)
   {
-    return _plugin->_ext._latency->get(_plugin->_plugin);
+    return 0;
   }
-  return 0;
+
+  if (!_active)
+  {
+    _missedLatencyRequest = true;
+    return 0;
+  }
+
+  _missedLatencyRequest = false;
+  return _plugin->_ext._latency->get(_plugin->_plugin);
 }
 
 uint32 PLUGIN_API ClapAsVst3::getTailSamples()

diff --git a/src/wrapasvst3.h b/src/wrapasvst3.h
@@ -259,6 +259,7 @@ class ClapAsVst3 : public Steinberg::Vst::SingleComponentEffect,
   std::mutex _processingLock;
   std::atomic_bool _requestedFlush = false;
   std::atomic_bool _requestUICallback = false;
+  bool _missedLatencyRequest = false;
 
   // the queue from audiothread to UI thread
   ClapWrapper::detail::shared::fixedqueue<queueEvent, 8192> _queueToUI;