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64 lines
1.5 KiB
C++
64 lines
1.5 KiB
C++
/* ScummVM - Scumm Interpreter
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* Copyright (C) 2003-2006 The ScummVM project
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* $URL$
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* $Id$
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*
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*/
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#ifndef SKY_RNC_DECO_H
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#define SKY_RNC_DECO_H
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#include "common/stdafx.h"
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#define RNC_SIGNATURE 0x524E4301 // "RNC\001"
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namespace Sky {
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class RncDecoder {
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protected:
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uint16 _rawTable[64];
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uint16 _posTable[64];
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uint16 _lenTable[64];
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uint16 _crcTable[256];
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uint16 _bitBuffl;
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uint16 _bitBuffh;
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uint8 _bitCount;
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const uint8 *_srcPtr;
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uint8 *_dstPtr;
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public:
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RncDecoder();
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~RncDecoder();
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int32 unpackM1(const void *input, void *output, uint16 key);
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protected:
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void initCrc();
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uint16 crcBlock(const uint8 *block, uint32 size);
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uint16 inputBits(uint8 amount);
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void makeHufftable(uint16 *table);
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uint16 inputValue(uint16 *table);
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};
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} // End of namespace Sky
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#endif
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