userlibandfileserver/fileserver/shostmassstorage/msproxy/tmsmemmap.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 07 Jan 2010 13:38:45 +0200
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Revision: 201001 Kit: 201001
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// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of the License "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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//
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/**
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 @file
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 @internalTechnology
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*/
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#ifndef TMSMEMMAP_H
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#define TMSMEMMAP_H
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class TMsDataMemMap
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	{
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public:
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    static const TInt KSectorSize = 0x200; // 512
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    static const TInt KFormatSectorShift = 9;
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	TMsDataMemMap();
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    void Reset();
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    void InitDataArea(TUint32 aFirstDataSector, TUint32 aNumSectors);
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    void InitDataArea(TUint64 aSize);
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    TInt BlockLength() const;
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    TUint64 DataSize() const;
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    TInt64 GetDataPos(TInt64 aPos) const;
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    TInt TranslateDataPos(TInt64& aPos, TInt& aLength) const;
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    TInt CheckBlockInRange(TInt64& aPos, TInt aLength) const;
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private:
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    // Whole media
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    // Size
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    TUint64 iSize;
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    // Data Area
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    // Offset
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    TInt64 iDataOffset;
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	};
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#include "tmsmemmap.inl"
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#endif // TMSMEMMAP_H