fix unity log call from native.

Plugins/uDesktopDuplication/uDesktopDuplication/Debug.cpp

@@ -4,15 +4,19 @@
 #include "Debug.h"
 
 
-decltype(Debug::mode_)    Debug::mode_ = Debug::Mode::File;
-decltype(Debug::logFunc_) Debug::logFunc_ = nullptr;
-decltype(Debug::errFunc_) Debug::errFunc_ = nullptr;
-decltype(Debug::fs_)      Debug::fs_;
-decltype(Debug::ss_)      Debug::ss_;
+decltype(Debug::isInitialized_) Debug::isInitialized_ = false;
+decltype(Debug::mode_)          Debug::mode_ = Debug::Mode::File;
+decltype(Debug::logFunc_)       Debug::logFunc_ = nullptr;
+decltype(Debug::errFunc_)       Debug::errFunc_ = nullptr;
+decltype(Debug::fs_)            Debug::fs_;
+decltype(Debug::ss_)            Debug::ss_;
 
 
 void Debug::Initialize()
 {
+    if (isInitialized_) return;
+    isInitialized_ = true;
+    
     if (mode_ == Mode::File)
     {
         fs_.open("uDesktopDuplication.log");
@@ -23,6 +27,9 @@ void Debug::Initialize()
 
 void Debug::Finalize()
 {
+    if (!isInitialized_) return;
+    isInitialized_ = false;
+
     if (mode_ == Mode::File)
     {
         Debug::Log("Stop");

Plugins/uDesktopDuplication/uDesktopDuplication/Debug.h

@@ -64,8 +64,12 @@ private:
                 {
                     switch (level)
                     {
-                        case Level::Log   : logFunc_(ss_.str().c_str()); break;
-                        case Level::Error : errFunc_(ss_.str().c_str()); break;
+                        case Level::Log   : 
+                            if (logFunc_) logFunc_(ss_.str().c_str()); 
+                            break;
+                        case Level::Error : 
+                            if (errFunc_) errFunc_(ss_.str().c_str()); 
+                            break;
                     }
                 }
                 break;
@@ -119,6 +123,7 @@ public:
     }
 
 private:
+    static bool isInitialized_;
     static Mode mode_;
     static std::ofstream fs_;
     static std::ostringstream ss_;

Plugins/uDesktopDuplication/uDesktopDuplication/main.cpp

@@ -25,7 +25,7 @@ std::queue<Message> g_messages;
 
 extern "C"
 {
-    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API InitializeUDD()
+    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API Initialize()
     {
         if (g_unity && !g_manager)
         {
@@ -34,7 +34,7 @@ extern "C"
         }
     }
 
-    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API FinalizeUDD()
+    UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API Finalize()
     {
         if (!g_manager) return;
 
@@ -52,12 +52,12 @@ extern "C"
         {
             case kUnityGfxDeviceEventInitialize:
             {
-                InitializeUDD();
+                Initialize();
                 break;
             }
             case kUnityGfxDeviceEventShutdown:
             {
-                FinalizeUDD();
+                Finalize();
                 break;
             }
         }
@@ -66,8 +66,6 @@ extern "C"
     UNITY_INTERFACE_EXPORT void UNITY_INTERFACE_API UnityPluginLoad(IUnityInterfaces* unityInterfaces)
     {
         g_unity = unityInterfaces;
-        InitializeUDD();
-
         auto unityGraphics = g_unity->Get<IUnityGraphics>();
         unityGraphics->RegisterDeviceEventCallback(OnGraphicsDeviceEvent);
     }
@@ -76,8 +74,6 @@ extern "C"
     {
         auto unityGraphics = g_unity->Get<IUnityGraphics>();
         unityGraphics->UnregisterDeviceEventCallback(OnGraphicsDeviceEvent);
-
-        FinalizeUDD();
         g_unity = nullptr;
     }