os/kernelhwsrv/userlibandfileserver/fileserver/shostmassstorage/msproxy/tmsmemmap.h
author sl
Tue, 10 Jun 2014 14:32:02 +0200
changeset 1 260cb5ec6c19
permissions -rw-r--r--
Update contrib.
     1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
     2 // All rights reserved.
     3 // This component and the accompanying materials are made available
     4 // under the terms of the License "Eclipse Public License v1.0"
     5 // which accompanies this distribution, and is available
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
     7 //
     8 // Initial Contributors:
     9 // Nokia Corporation - initial contribution.
    10 //
    11 // Contributors:
    12 //
    13 // Description:
    14 //
    15 
    16 /**
    17  @file
    18  @internalTechnology
    19 */
    20 
    21 #ifndef TMSMEMMAP_H
    22 #define TMSMEMMAP_H
    23 
    24 
    25 
    26 class TMsDataMemMap
    27 	{
    28 public:
    29     static const TInt KSectorSize = 0x200; // 512
    30     static const TInt KFormatSectorShift = 9;
    31 
    32 	TMsDataMemMap();
    33     void Reset();
    34 
    35     void InitDataArea(TUint32 aFirstDataSector, TUint32 aNumSectors);
    36     void InitDataArea(TUint64 aSize);
    37 
    38     TInt BlockLength() const;
    39     TUint64 DataSize() const;
    40 
    41     TInt64 GetDataPos(TInt64 aPos) const;
    42     TInt TranslateDataPos(TInt64& aPos, TInt& aLength) const;
    43     TInt CheckBlockInRange(TInt64& aPos, TInt aLength) const;
    44 
    45 private:
    46     // Whole media
    47     // Size
    48     TUint64 iSize;
    49 
    50     // Data Area
    51     // Offset
    52     TInt64 iDataOffset;
    53 	};
    54 
    55 #include "tmsmemmap.inl"
    56 
    57 #endif // TMSMEMMAP_H