osd resolution: Add src/gui/osd_helpers.cpp

- Move switch osd resolution from COsdSetup::changeNotify() to
   COsdHelpers::changeOsdResolution()

src/gui/osd_helpers.h

@@ -0,0 +1,29 @@
+
+#ifndef __osd_helpers__
+#define __osd_helpers__
+
+enum {
+	OSDMODE_720  = 0,
+	OSDMODE_1080 = 1
+};
+
+class COsdHelpers
+{
+	private:
+
+	public:
+		COsdHelpers();
+		~COsdHelpers();
+		static COsdHelpers* getInstance();
+
+		int g_settings_osd_resolution_save;
+
+		void changeOsdResolution(uint32_t mode, bool automode=false, bool forceOsdReset=false);
+		void resetOsdResolution(int newSystem);
+		int  isVideoSystem1080(int res);
+		int  getVideoSystem();
+		uint32_t getOsdResolution();
+};
+
+
+#endif //__osd_helpers__