diff -r 000000000000 -r 96e5fb8b040d userlibandfileserver/fileserver/shostmassstorage/msproxy/tmsmemmap.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/userlibandfileserver/fileserver/shostmassstorage/msproxy/tmsmemmap.h	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,57 @@
+// 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 the License "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
+ @internalTechnology
+*/
+
+#ifndef TMSMEMMAP_H
+#define TMSMEMMAP_H
+
+
+
+class TMsDataMemMap
+	{
+public:
+    static const TInt KSectorSize = 0x200; // 512
+    static const TInt KFormatSectorShift = 9;
+
+	TMsDataMemMap();
+    void Reset();
+
+    void InitDataArea(TUint32 aFirstDataSector, TUint32 aNumSectors);
+    void InitDataArea(TUint64 aSize);
+
+    TInt BlockLength() const;
+    TUint64 DataSize() const;
+
+    TInt64 GetDataPos(TInt64 aPos) const;
+    TInt TranslateDataPos(TInt64& aPos, TInt& aLength) const;
+    TInt CheckBlockInRange(TInt64& aPos, TInt aLength) const;
+
+private:
+    // Whole media
+    // Size
+    TUint64 iSize;
+
+    // Data Area
+    // Offset
+    TInt64 iDataOffset;
+	};
+
+#include "tmsmemmap.inl"
+
+#endif // TMSMEMMAP_H