mirror of
https://git.do.srb2.org/STJr/SRB2.git
synced 2024-12-03 01:32:22 +00:00
75 lines
2.7 KiB
C
75 lines
2.7 KiB
C
// SONIC ROBO BLAST 2
|
|
//-----------------------------------------------------------------------------
|
|
// Copyright (C) 2000-2005 by Marc Alexander Lehmann <schmorp@schmorp.de>
|
|
//
|
|
// This program is free software distributed under the
|
|
// terms of the GNU General Public License, version 2.
|
|
// See the 'LICENSE' file for more details.
|
|
//-----------------------------------------------------------------------------
|
|
/// \file lzf.h
|
|
/// \brief LZF de/compression routines
|
|
|
|
#ifndef LZF_H
|
|
#define LZF_H
|
|
#include <stdio.h>
|
|
|
|
/***********************************************************************
|
|
**
|
|
** lzf -- an extremely fast/free compression/decompression-method
|
|
** http://liblzf.plan9.de/
|
|
**
|
|
** This algorithm is believed to be patent-free.
|
|
**
|
|
***********************************************************************/
|
|
|
|
#define LZF_VERSION 0x0105 /* 1.5 */
|
|
|
|
/*
|
|
* Compress in_len bytes stored at the memory block starting at
|
|
* in_data and write the result to out_data, up to a maximum length
|
|
* of out_len bytes.
|
|
*
|
|
* If the output buffer is not large enough or any error occurs
|
|
* return 0, otherwise return the number of bytes used (which might
|
|
* be considerably larger than in_len, so it makes sense to always
|
|
* use out_len == in_len - 1), to ensure _some_ compression, and store
|
|
* the data uncompressed otherwise.
|
|
*
|
|
* lzf_compress might use different algorithms on different systems and
|
|
* even diferent runs, thus might result in different compressed strings
|
|
* depending on the phase of the moon or similar factors. However, all
|
|
* these strings are architecture-independent and will result in the
|
|
* original data when decompressed using lzf_decompress.
|
|
*
|
|
* The buffers must not be overlapping.
|
|
*
|
|
* If the option LZF_STATE_ARG is enabled, an extra argument must be
|
|
* supplied which is not reflected in this header file. Refer to lzfP.h
|
|
* and lzf_c.c.
|
|
*
|
|
*/
|
|
size_t
|
|
lzf_compress (const void *const in_data, size_t in_len,
|
|
void *out_data, size_t out_len);
|
|
|
|
/*
|
|
* Decompress data compressed with some version of the lzf_compress
|
|
* function and stored at location in_data and length in_len. The result
|
|
* will be stored at out_data up to a maximum of out_len characters.
|
|
*
|
|
* If the output buffer is not large enough to hold the decompressed
|
|
* data, a 0 is returned and errno is set to E2BIG. Otherwise the number
|
|
* of decompressed bytes (i.e. the original length of the data) is
|
|
* returned.
|
|
*
|
|
* If an error in the compressed data is detected, a zero is returned and
|
|
* errno is set to EINVAL.
|
|
*
|
|
* This function is very fast, about as fast as a copying loop.
|
|
*/
|
|
size_t
|
|
lzf_decompress (const void *const in_data, size_t in_len,
|
|
void *out_data, size_t out_len);
|
|
|
|
#endif
|
|
|