From e727d21431bf1f2d276b684f43d405cbb17ec6bb Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Thu, 15 Apr 2021 23:33:20 +0200
Subject: [PATCH] Format detection for Audio Unit

---
 plugins/vst/SfizzVstEditor.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/plugins/vst/SfizzVstEditor.cpp b/plugins/vst/SfizzVstEditor.cpp
index b7bb01e7..e577eb9f 100644
--- a/plugins/vst/SfizzVstEditor.cpp
+++ b/plugins/vst/SfizzVstEditor.cpp
@@ -12,6 +12,7 @@
 #include "editor/EditIds.h"
 #include "plugin/SfizzFileScan.h"
 #include "plugin/InstrumentDescription.h"
+#include "pluginterfaces/vst/ivsthostapplication.h"
 #include "IdleUpdateHandler.h"
 #if !defined(__APPLE__) && !defined(_WIN32)
 #include "X11RunLoop.h"
@@ -98,14 +99,20 @@ bool PLUGIN_API SfizzVstEditor::open(void* parent, const VSTGUI::PlatformType& p
         update->deferUpdate();
 
     // let the editor know about plugin format
-    uiReceiveValue(EditId::PluginFormat, std::string("VST3"));
+    absl::string_view pluginFormatName = "VST3";
 
     if (FUnknownPtr<Vst::IHostApplication> app { controller->getHostContext() }) {
         Vst::String128 name;
         app->getName(name);
         uiReceiveValue(EditId::PluginHost, std::string(Steinberg::String(name).text8()));
+
+        void* interfacePtr;
+        if (app->queryInterface(Vst::IVst3ToAUWrapper_iid, &interfacePtr) == kResultTrue)
+            pluginFormatName = "Audio Unit";
     }
 
+    uiReceiveValue(EditId::PluginFormat, std::string(pluginFormatName));
+
     absl::optional<fs::path> userFilesDir = SfizzPaths::getSfzConfigDefaultPath();
     uiReceiveValue(EditId::CanEditUserFilesDir, 1);
     uiReceiveValue(EditId::UserFilesDir, userFilesDir.value_or(fs::path()).u8string());