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/*************************************************************************
*
* 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
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