fbs/fontandbitmapserver/sfbs/CompressionBookmark.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Thu, 19 Aug 2010 11:11:18 +0300
branchRCL_3
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// Copyright (c) 2003-2009 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 "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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// CompressionBookmark
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// 
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//
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#ifndef __COMPRESSIONBOOKMARK_H_
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#define __COMPRESSIONBOOKMARK_H_
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class TCompressionBookMark
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	{
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public:
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	TCompressionBookMark();
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public:
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	inline void CalculateCheckSum();
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	inline TBool IsCheckSumOk() const;
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	TInt iSrcDataOffset;
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	TInt iCursorPos;
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	TUint32 iCheckSum;
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	TInt iCheckSum2;
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	};
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inline TCompressionBookMark::TCompressionBookMark() :
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	iSrcDataOffset(0), iCursorPos(0)
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	{
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	CalculateCheckSum();
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	}
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inline void TCompressionBookMark::CalculateCheckSum()
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	{
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	iCheckSum=((TUint32) iSrcDataOffset)^((TUint32) iCursorPos);
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	iCheckSum2=(1-iSrcDataOffset)+(1-iCursorPos);
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	}
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inline TBool TCompressionBookMark::IsCheckSumOk() const
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	{
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	TBool check1=(iCheckSum==(((TUint32) iSrcDataOffset)^((TUint32) iCursorPos)));
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	TBool check2=(iCheckSum2==((1-iSrcDataOffset)+(1-iCursorPos)));
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	return (check1 && check2);
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	}
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#endif//__COMPRESSIONBOOKMARK_H_