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-/*************************************************************************
- *
- * 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: ccidecom.hxx,v $
- * $Revision: 1.3 $
- *
- * This file is part of OpenOffice.org.
- *
- * OpenOffice.org is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 3
- * only, as published by the Free Software Foundation.
- *
- * OpenOffice.org is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * 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).
- *
- * You should have received a copy of the GNU Lesser General Public License
- * version 3 along with OpenOffice.org. If not, see
- * <http://www.openoffice.org/license.html>
- * for a copy of the LGPLv3 License.
- *
- ************************************************************************/
-
-#ifndef _CCIDECOM_HXX
-#define _CCIDECOM_HXX
-
-#include <tools/stream.hxx>
-
-
-#define CCI_OPTION_2D 1 // 2D-Komprimierung (statt 1D)
-#define CCI_OPTION_EOL 2 // EOL-Codes am Ende jeder Zeile vorhanden
-#define CCI_OPTION_BYTEALIGNEOL 4 // Fuellbits vor jedem EOL-Code, so dass
- // Ende von EOL auf Bytes aligend
-#define CCI_OPTION_BYTEALIGNROW 8 // Rows beginnen immer auf Byte-Grenze
-#define CCI_OPTION_INVERSEBITORDER 16
-
-// Eintrag in eine Huffman-Tabelle:
-struct CCIHuffmanTableEntry {
- USHORT nValue; // Der Daten-Wert.
- USHORT nCode; // Der Code durch den der Daten-Wert repraesentiert wird.
- USHORT nCodeBits; // Laenge des Codes in Bits.
-};
-
-
-// Eintrag in eine Hash-Tabelle zur schnellen Dekodierung
-struct CCILookUpTableEntry {
- USHORT nValue;
- USHORT nCodeBits;
-};
-
-
-class CCIDecompressor {
-
-public:
-
- CCIDecompressor( ULONG nOptions, UINT32 nImageWidth );
- ~CCIDecompressor();
-
- void StartDecompression( SvStream & rIStream );
-
- BOOL DecompressScanline(BYTE * pTarget, ULONG nTargetBits );
-
-private:
-
- void MakeLookUp(const CCIHuffmanTableEntry * pHufTab,
- const CCIHuffmanTableEntry * pHufTabSave,
- CCILookUpTableEntry * pLookUp,
- USHORT nHuffmanTableSize,
- USHORT nMaxCodeBits);
-
- BOOL ReadEOL( UINT32 nMaxFillBits );
-
- BOOL Read2DTag();
-
- BYTE ReadBlackOrWhite();
-
- USHORT ReadCodeAndDecode(const CCILookUpTableEntry * pLookUp,
- USHORT nMaxCodeBits);
-
- void FillBits(BYTE * pTarget, USHORT nTargetBits,
- USHORT nBitPos, USHORT nNumBits,
- BYTE nBlackOrWhite);
-
- USHORT CountBits(const BYTE * pData, USHORT nDataSizeBits,
- USHORT nBitPos, BYTE nBlackOrWhite);
-
- void Read1DScanlineData(BYTE * pTarget, USHORT nTargetBits);
-
- void Read2DScanlineData(BYTE * pTarget, USHORT nTargetBits);
-
- BOOL bTableBad;
-
- BOOL bStatus;
-
- BYTE* pByteSwap;
-
- SvStream * pIStream;
-
- UINT32 nEOLCount;
-
- UINT32 nWidth;
-
- ULONG nOptions;
-
- BOOL bFirstEOL;
-
- CCILookUpTableEntry * pWhiteLookUp;
- CCILookUpTableEntry * pBlackLookUp;
- CCILookUpTableEntry * p2DModeLookUp;
- CCILookUpTableEntry * pUncompLookUp;
-
- ULONG nInputBitsBuf;
- USHORT nInputBitsBufSize;
-
- BYTE * pLastLine;
- ULONG nLastLineSize;
-};
-
-
-#endif
-