1 // Copyright (c) 2003-2009 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 "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 // CompressionBookmark

    15 // 

    16 //

    17 

    18 #ifndef __COMPRESSIONBOOKMARK_H_

    19 #define __COMPRESSIONBOOKMARK_H_

    20 

    21 class TCompressionBookMark

    22 	{

    23 public:

    24 	TCompressionBookMark();

    25 

    26 public:

    27 	inline void CalculateCheckSum();

    28 	inline TBool IsCheckSumOk() const;

    29 	TInt iSrcDataOffset;

    30 	TInt iCursorPos;

    31 	TUint32 iCheckSum;

    32 	TInt iCheckSum2;

    33 

    34 	};

    35 

    36 inline TCompressionBookMark::TCompressionBookMark() :

    37 	iSrcDataOffset(0), iCursorPos(0)

    38 	{

    39 	CalculateCheckSum();

    40 	}

    41 

    42 inline void TCompressionBookMark::CalculateCheckSum()

    43 	{

    44 	iCheckSum=((TUint32) iSrcDataOffset)^((TUint32) iCursorPos);

    45 	iCheckSum2=(1-iSrcDataOffset)+(1-iCursorPos);

    46 	}

    47 

    48 inline TBool TCompressionBookMark::IsCheckSumOk() const

    49 	{

    50 	TBool check1=(iCheckSum==(((TUint32) iSrcDataOffset)^((TUint32) iCursorPos)));

    51 	TBool check2=(iCheckSum2==((1-iSrcDataOffset)+(1-iCursorPos)));

    52 	return (check1 && check2);

    53 	}

    54 

    55 

    56 #endif//__COMPRESSIONBOOKMARK_H_