94 lines
3.8 KiB
C
94 lines
3.8 KiB
C
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/*-----------------------------------------------------------*/
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/* Block Sorting, Lossless Data Compression Library. */
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/* Interface to Quantized Local Frequency Coding 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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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 _LIBBSC_QLFC_H
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#define _LIBBSC_QLFC_H
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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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* You should call this function before you call any of the other functions in qlfc.
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* @param features - the set of additional features.
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* @return LIBBSC_NO_ERROR if no error occurred, error code otherwise.
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*/
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int bsc_qlfc_init(int features);
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/**
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* Compress a memory block using Quantized Local Frequency Coding 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 inputSize - the length of the input memory block.
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* @param outputSize - the length of the output memory block.
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* @return the length of compressed memory block if no error occurred, error code otherwise.
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*/
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int bsc_qlfc_static_encode_block(const unsigned char * input, unsigned char * output, int inputSize, int outputSize);
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/**
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* Decompress a memory block using Quantized Local Frequency Coding 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 inputSize - the length of the input memory block.
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* @param outputSize - the length of the output memory block.
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* @return the length of decompressed memory block if no error occurred, error code otherwise.
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*/
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int bsc_qlfc_adaptive_encode_block(const unsigned char * input, unsigned char * output, int inputSize, int outputSize);
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/**
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* Compress a memory block using Quantized Local Frequency Coding 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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* @return the length of compressed memory block if no error occurred, error code otherwise.
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*/
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int bsc_qlfc_static_decode_block(const unsigned char * input, unsigned char * output);
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/**
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* Decompress a memory block using Quantized Local Frequency Coding 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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* @return the length of decompressed memory block if no error occurred, error code otherwise.
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*/
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int bsc_qlfc_adaptive_decode_block(const unsigned char * input, unsigned char * output);
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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 qlfc.h */
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/*-----------------------------------------------------------*/
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