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42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*
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* BWT.h
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*
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* Copyright (c) 2017-present, MacPaw Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*/
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#ifndef __BWT_H__
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#define __BWT_H__
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#include <stdint.h>
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#include <stdbool.h>
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void CalculateInverseBWT(uint32_t *transform,uint8_t *block,int blocklen);
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void UnsortBWT(uint8_t *dest,uint8_t *src,int blocklen,int firstindex,uint32_t *transformbuf);
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bool UnsortST4(uint8_t *dest,uint8_t *src,int blocklen,int firstindex,uint32_t *transformbuf);
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typedef struct MTFState
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{
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int table[256];
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} MTFState;
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void ResetMTFDecoder(MTFState *self);
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int DecodeMTF(MTFState *self,int symbol);
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void DecodeMTFBlock(uint8_t *block,int blocklen);
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void DecodeM1FFNBlock(uint8_t *block,int blocklen,int order);
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#endif
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