diff -r 000000000000 -r d0791faffa3f mtpfws/mtpfw/dataproviders/devdp/devdpextnapi/interface/mmtpdevdpextn.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mtpfws/mtpfw/dataproviders/devdp/devdpextnapi/interface/mmtpdevdpextn.h	Tue Feb 02 01:11:40 2010 +0200
@@ -0,0 +1,83 @@
+// Copyright (c) 2008-2009 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:
+//
+
+/**
+ @file
+ @publishedPartner
+ @released
+*/
+#ifndef MMTPDEVDPEXTN_H_
+#define MMTPDEVDPEXTN_H_
+
+#include <e32base.h>
+#include <e32cons.h>
+#include <e32cmn.h>
+#include <ecom/ecom.h>
+#include <mtp/mtpdataproviderapitypes.h>
+#include <mtp/tmtptyperequest.h>
+#include <mtp/mtpprotocolconstants.h>
+
+
+class MExtnDevicePropDp
+{
+public:
+/**
+This interface method is designed to implement GetDevicePropValue (Operation Code EMTPOpCodeGetDevicePropValue).
+This operation returns the current value of the particular device property.
+@param aPropCode : device property code eg: PlaybackObject(D411)
+@param aMMTPtype : out param memory need to be allocated by the implementation.
+				   Owner ship of this param should be with allocator.
+*/
+virtual TInt GetDevPropertyL(const TMTPDevicePropertyCode aPropCode, MMTPType** aMMTPtype) = 0;
+
+
+/**
+This interface method is designed to implement GetDevicePropDesc (Operation Code EMTPOpCodeGetDevicePropDesc).
+This operation returns the current property desc of the particular device property.
+@param aPropCode : device property code eg: PlaybackObject(D411)
+@param aMMTPtype : out param memory need to be allocated by the implementation.
+				   Owner ship of this param should be with allocator.
+*/
+virtual TInt GetDevPropertyDescL(const TMTPDevicePropertyCode aPropCode, MMTPType** aMMTPtype) = 0;
+
+/**
+@param aMMTPtype : out param memory need to be allocated by the implementation.
+				   Owner ship of this param should be with allocator.
+SetDevicePropertyL function uses the allocated memory to set the device property when 
+a EMTPOpCodeSetDevicePropValue operation code comes.				   
+
+*/
+virtual TInt GetDevicePropertyContainerL(TMTPDevicePropertyCode aPropCode, MMTPType** aMMTPtype) = 0;
+
+/**
+This method sets the device property implemented by extension plugin.
+*/
+virtual TMTPResponseCode SetDevicePropertyL() = 0;
+
+/**
+This method returns the supported properties by extension plugin.
+*/
+virtual void Supported (TMTPSupportCategory aCategory, RArray <TUint>& aArray, TMTPOperationalMode aMode) = 0;
+
+/**
+This interface method is designed to implement RessetDevicePropValue. 
+@param aPropCode : device property code .
+*/
+virtual TInt ResetDevPropertyL(const TMTPDevicePropertyCode aPropCode) = 0;
+
+};
+
+
+#endif /*MMTPDEVDPEXTN_H_*/