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Diffstat (limited to 'filter/source/graphicfilter/itiff/ccidecom.hxx')
-rw-r--r-- | filter/source/graphicfilter/itiff/ccidecom.hxx | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/filter/source/graphicfilter/itiff/ccidecom.hxx b/filter/source/graphicfilter/itiff/ccidecom.hxx new file mode 100644 index 000000000000..2543be82d052 --- /dev/null +++ b/filter/source/graphicfilter/itiff/ccidecom.hxx @@ -0,0 +1,125 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * 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 + |