userlibandfileserver/fileserver/shostmassstorage/msproxy/tmsmemmap.h
author Mike Kinghan <mikek@symbian.org>
Mon, 19 Jul 2010 14:32:36 +0100
branchGCC_SURGE
changeset 210 b592f7984442
parent 109 b3a1d9898418
permissions -rw-r--r--
Fix for bug 3292 - [GCCE] Possible undefined behaviour warning in kerneltest/f32test/server/t_fatcharsetconv_SpecificCases.cpp Fix for bug 3293 - [GCCE] Incorrect operator precedence assumptions in kerneltest/f32test/server/t_fsrv.cpp Fix for bug 3295 - [GCCE] deprecated conversion from string constant to 'char*' in f32test build Fix for bug 3297 - [GCCE] Operator precedence warnings in kerneltest/f32test/demandpaging/t_nandpaging.cpp Fix for bug 3309 - [GCCE] Terminal backslashes in comments are parsed as line-continuations in f32test

// Copyright (c) 2008-2010 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:

	TMsDataMemMap();
    void Reset();

    void InitDataArea(TUint32 aFirstDataSector, TUint32 aNumSectors, TUint32 aSectorSize);
    void InitDataArea(TUint64 aSize);

    TUint32 BlockLength() const;
    TUint64 DataSize() const;

    TInt64 GetDataPos(TInt64 aPos) const;
    TInt TranslateDataPos(TInt64& aPos, TInt& aLength) const;
    TInt CheckBlockInRange(TInt64& aPos, TInt aLength) const;
    TInt FormatSectorShift() const;

private:
    // Whole media
    // Size
    TUint64 iSize;

    // Data Area
    // Offset
    TInt64 iDataOffset;

    // Sector Size (Media Block Size)
    TUint32 iSectorSize;
    
    // Sector-size dependant
    TInt iFormatSectorShift;
	};

#include "tmsmemmap.inl"

#endif // TMSMEMMAP_H