/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: decode.hxx,v $
 * $Revision: 1.3 $
 *
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 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
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#ifndef _DECODE_HXX
#define _DECODE_HXX

#ifndef _BMPACC_HXX
#include <vcl/bmpacc.hxx>
#endif

namespace binfilter
{

struct GIFLZWTableEntry;

class GIFLZWDecompressor
{
	GIFLZWTableEntry*	pTable;
	HPBYTE				pOutBuf;
	HPBYTE				pOutBufData;
	HPBYTE				pBlockBuf;
	ULONG				nInputBitsBuf;
	USHORT				nTableSize;
	USHORT				nClearCode;
	USHORT				nEOICode;
	USHORT				nCodeSize;
	USHORT				nOldCode;
	USHORT				nOutBufDataLen;
	USHORT				nInputBitsBufSize;
	BOOL				bEOIFound;
	BYTE				nDataSize;
	BYTE				nBlockBufSize;
	BYTE				nBlockBufPos;

	void				AddToTable(USHORT nPrevCode, USHORT nCodeFirstData);
	BOOL				ProcessOneCode();


public:

						GIFLZWDecompressor( BYTE cDataSize );
						~GIFLZWDecompressor();

	HPBYTE				DecompressBlock( HPBYTE pSrc, BYTE cBufSize, ULONG& rCount, BOOL& rEOI );
};

}

#endif
