class AppManager;
class NodeManager;
class BufferManager;
class NotificationManager;
class MMediaFilesManager;
class AddOnManager;
class FormatManager;

extern AppManager *				gAppManager;
extern NodeManager *			gNodeManager;
extern BufferManager *			gBufferManager;
extern NotificationManager *	gNotificationManager;
extern MMediaFilesManager *		gMMediaFilesManager;
extern AddOnManager *gAddOnManager;
extern FormatManager *gFormatManager;