114 lines
4.3 KiB
C
114 lines
4.3 KiB
C
/*
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* This file is a part of Pcompress, a chunked parallel multi-
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* algorithm lossless compression and decompression program.
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*
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* Copyright (C) 2012-2013 Moinak Ghosh. All rights reserved.
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* Use is subject to license terms.
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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 Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or (at your option) any later version.
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*
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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 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 program.
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* If not, see <http://www.gnu.org/licenses/>.
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*
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* moinakg@belenix.org, http://moinakg.wordpress.com/
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*
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*/
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/*-----------------------------------------------------------*/
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/* Block Sorting, Lossless Data Compression Library. */
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/* Interface to Lempel Ziv Prediction functions */
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/*-----------------------------------------------------------*/
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/*--
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This file is a part of bsc and/or libbsc, a program and a library for
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lossless, block-sorting data compression.
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Copyright (c) 2009-2012 Ilya Grebnov <ilya.grebnov@gmail.com>
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Copyright (c) 2012 Moinak Ghosh <moinakg@gmail.com>
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See file AUTHORS for a full list of contributors.
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The bsc and libbsc is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at your
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option) any later version.
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The bsc and libbsc is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
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License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with the bsc and libbsc. If not, see http://www.gnu.org/licenses/.
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Please see the files COPYING and COPYING.LIB for full copyright information.
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See also the bsc and libbsc web site:
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http://libbsc.com/ for more information.
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--*/
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#ifndef _LZP_H
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#define _LZP_H
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#define LZP_NO_ERROR 0
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#define LZP_BAD_PARAMETER -1
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#define LZP_NOT_ENOUGH_MEMORY -2
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#define LZP_NOT_COMPRESSIBLE -3
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#define LZP_NOT_SUPPORTED -4
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#define LZP_UNEXPECTED_EOB -5
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#define LZP_DATA_CORRUPT -6
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#define LZP_DEFAULT_LZPHASHSIZE 16
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#define LZP_DEFAULT_LZPMINLEN 128
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#define LZP_MAX_BLOCK (2000000000LL)
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#define ALPHABET_SIZE (256)
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* Preprocess a memory block by LZP algorithm.
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* @param input - the input memory block of n bytes.
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* @param output - the output memory block of n bytes.
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* @param n - the length of the input/output memory blocks.
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* @param hashSize - the hash table size.
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* @param minLen - the minimum match length.
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* @param features - the set of additional features.
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* @return The length of preprocessed memory block if no error occurred, error code otherwise.
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*/
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int64_t lzp_compress(const unsigned char * input, unsigned char * output, int64_t n, int hashSize, int minLen, int features);
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/**
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* Reconstructs the original memory block after LZP algorithm.
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* @param input - the input memory block of n bytes.
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* @param output - the output memory block.
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* @param n - the length of the input memory block.
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* @param hashSize - the hash table size.
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* @param minLen - the minimum match length.
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* @param features - the set of additional features.
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* @return The length of original memory block if no error occurred, error code otherwise.
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*/
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int64_t lzp_decompress(const unsigned char * input, unsigned char * output, int64_t n, int hashSize, int minLen, int features);
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int lzp_hash_size(int level);
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#ifdef __cplusplus
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}
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#endif
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#endif
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/*-----------------------------------------------------------*/
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/* End lzp.h */
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/*-----------------------------------------------------------*/
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