obs-vst: Clear VST effect if user selects empty plugin

Author: walker-WSH

VSTPlugin.cpp

@@ -133,7 +133,6 @@ void VSTPlugin::cleanupChannelBuffers()
 void VSTPlugin::loadEffectFromPath(std::string path)
 {
 	if (this->pluginPath.compare(path) != 0) {
-		closeEditor();
 		unloadEffect();
 		blog(LOG_INFO, "User selected new VST plugin: '%s'", path.c_str());
 	}
@@ -264,6 +263,8 @@ obs_audio_data *VSTPlugin::process(struct obs_audio_data *audio)
 
 void VSTPlugin::unloadEffect()
 {
+	closeEditor();
+
 	{
 		std::lock_guard<std::recursive_mutex> lock(lockEffect);
 
@@ -279,6 +280,8 @@ void VSTPlugin::unloadEffect()
 	}
 
 	unloadLibrary();
+
+	pluginPath = "";
 }
 
 bool VSTPlugin::isEditorOpen()

obs-vst.cpp

@@ -99,6 +99,7 @@ static void vst_update(void *data, obs_data_t *settings)
 	const char *path = obs_data_get_string(settings, "plugin_path");
 
 	if (strcmp(path, "") == 0) {
+		vstPlugin->unloadEffect();
 		return;
 	}
 	vstPlugin->loadEffectFromPath(std::string(path));