--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/graphicscomposition/surfaceupdate/inc/updateserverprovider.h	Tue Feb 02 01:47:50 2010 +0200
@@ -0,0 +1,85 @@
+// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+
+#ifndef __UPDATESERVERPROVIDER_H__
+#define __UPDATESERVERPROVIDER_H__
+
+#include <e32cmn.h>
+
+class TSurfaceId;
+
+
+
+/**
+@publishedPartner
+
+
+The class is aimed for use within WSERV process only by the Content update receiver. 
+It provides interface for registering Content update receiver instances for each screen. 
+*/
+class MSurfaceUpdateServerProvider
+	{
+public:	
+	/**
+	Assign Content update receiver instance to particular screen. 
+	The following calls of this function for the same screen will override the previous.
+	
+	@param aScreen - screen number, associated with the output, 
+		varies from 0 to number of screens present - 1
+	@param aUpdateReceiver - pointer to a Content update receiver interface associated 
+		with the aScreen. NULL signifies that particular screen doesn't 
+		correspond any composition receiver. The ownership of this parameter 
+		will not be transferred.
+	@param aPriority - priority of the Content update receiver. 
+        The higher the number is the higher the priority of the screen. 
+		This number will be used to identify the master screen for any particular surface. 
+		It is not acceptable to have more than one screen with the same priority.
+	@return KErrNone if an operation is successful. 
+	@return KErrArgument Arguments don’t lie in expected range.
+	@return KErrNotReady The server has not been started.
+	@return KErrAlreadyExists Another Content update receiver with the same priority number has already been registered with the SUS. Any other system error codes otherwise.
+	@panic EUpdateServPanicRegister If another registration method has already been used.
+	*/
+	virtual TInt Register(TInt aScreen, CBase* aUpdateReceiver, TInt aPriority) = 0;
+private:
+	friend class CTSurfaceUpdateStep;	
+	/**
+	Close the Surface Update Server
+	This function is intended for test/debugging only
+	The implementation will do nothing in released builds 	
+	
+	WARNING: Function for internal use ONLY. Compatibility is not guaranteed in future releases.
+	*/
+	virtual void Terminate() = 0;
+	};
+
+/**
+Spawn a thread within WSERV process. This will lead to starting the surface update server in it 
+@publishedPartner
+
+	
+@param aUpdateProvider - [out] reference pointer to surface update server provider, 
+		which will be set when the server is started. The variable will be used to registry 
+		content update receiver instances. The caller doesn't acquire the ownership of this instance,
+		thus mustn't delete it. The pointer will be valid until server is operating, 
+		i.e. system is up.
+		
+@return KErrNone if an operation is successful, any other system error codes otherwise
+*/
+IMPORT_C TInt StartSurfaceUpdateServer(MSurfaceUpdateServerProvider*& aSurfaceUpdateServerProvider);
+
+
+
+#endif