78 lines
2.6 KiB
C
Executable File
78 lines
2.6 KiB
C
Executable File
/*
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* lib.h - LZSA library definitions
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*
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* Copyright (C) 2019 Emmanuel Marty
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*/
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/*
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* Uses the libdivsufsort library Copyright (c) 2003-2008 Yuta Mori
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*
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* Inspired by LZ4 by Yann Collet. https://github.com/lz4/lz4
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* With help, ideas, optimizations and speed measurements by spke <zxintrospec@gmail.com>
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* With ideas from Lizard by Przemyslaw Skibinski and Yann Collet. https://github.com/inikep/lizard
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* Also with ideas from smallz4 by Stephan Brumme. https://create.stephan-brumme.com/smallz4/
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*
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*/
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#ifndef _LIB_H
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#define _LIB_H
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#include "stream.h"
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#include "dictionary.h"
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#include "frame.h"
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#include "format.h"
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#include "shrink_context.h"
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#include "shrink_streaming.h"
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#include "shrink_inmem.h"
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#include "expand_context.h"
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#include "expand_streaming.h"
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#include "expand_inmem.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Compression flags */
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#define LZSA_FLAG_FAVOR_RATIO (1<<0) /**< 1 to compress with the best ratio, 0 to trade some compression ratio for extra decompression speed */
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#define LZSA_FLAG_RAW_BLOCK (1<<1) /**< 1 to emit raw block */
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#define LZSA_FLAG_RAW_BACKWARD (1<<2) /**< 1 to compress or decompress raw block backward */
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/**
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* Reverse bytes in the specified buffer
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*
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* @param pBuffer pointer to buffer whose contents are to be reversed
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* @param nBufferSize size of buffer in bytes
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*/
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static inline void lzsa_reverse_buffer(unsigned char *pBuffer, const int nBufferSize) {
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const int nMidPoint = nBufferSize / 2;
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int i, j;
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for (i = 0, j = nBufferSize - 1; i < nMidPoint; i++, j--) {
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const unsigned char c = pBuffer[i];
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pBuffer[i] = pBuffer[j];
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pBuffer[j] = c;
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}
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIB_H */
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