1 /* lzo1x.h -- public interface of the LZO1X compression algorithm
3 This file is part of the LZO real-time data compression library.
5 Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
6 Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
7 Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
8 Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
9 Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
10 Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
11 Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
12 Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
13 Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
14 Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
15 Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
16 Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
17 Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
20 The LZO library is free software; you can redistribute it and/or
21 modify it under the terms of the GNU General Public License as
22 published by the Free Software Foundation; either version 2 of
23 the License, or (at your option) any later version.
25 The LZO library is distributed in the hope that it will be useful,
26 but WITHOUT ANY WARRANTY; without even the implied warranty of
27 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28 GNU General Public License for more details.
30 You should have received a copy of the GNU General Public License
31 along with the LZO library; see the file COPYING.
32 If not, write to the Free Software Foundation, Inc.,
33 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
35 Markus F.X.J. Oberhumer
36 <markus@oberhumer.com>
37 http://www.oberhumer.com/opensource/lzo/
41 #ifndef __LZO1X_H_INCLUDED
42 #define __LZO1X_H_INCLUDED
44 #ifndef __LZOCONF_H_INCLUDED
53 /***********************************************************************
55 ************************************************************************/
57 /* Memory required for the wrkmem parameter.
58 * When the required size is 0, you can also pass a NULL pointer.
61 #define LZO1X_MEM_COMPRESS LZO1X_1_MEM_COMPRESS
62 #define LZO1X_MEM_DECOMPRESS (0)
63 #define LZO1X_MEM_OPTIMIZE (0)
68 lzo1x_decompress ( const lzo_bytep src, lzo_uint src_len,
69 lzo_bytep dst, lzo_uintp dst_len,
70 lzo_voidp wrkmem /* NOT USED */ );
72 /* safe decompression with overrun testing */
74 lzo1x_decompress_safe ( const lzo_bytep src, lzo_uint src_len,
75 lzo_bytep dst, lzo_uintp dst_len,
76 lzo_voidp wrkmem /* NOT USED */ );
79 /***********************************************************************
81 ************************************************************************/
83 #define LZO1X_1_MEM_COMPRESS ((lzo_uint32) (16384L * lzo_sizeof_dict_t))
86 lzo1x_1_compress ( const lzo_bytep src, lzo_uint src_len,
87 lzo_bytep dst, lzo_uintp dst_len,
91 /***********************************************************************
92 // special compressor versions
93 ************************************************************************/
95 /* this version needs only 8 kB work memory */
96 #define LZO1X_1_11_MEM_COMPRESS ((lzo_uint32) (2048L * lzo_sizeof_dict_t))
99 lzo1x_1_11_compress ( const lzo_bytep src, lzo_uint src_len,
100 lzo_bytep dst, lzo_uintp dst_len,
104 /* this version needs 16 kB work memory */
105 #define LZO1X_1_12_MEM_COMPRESS ((lzo_uint32) (4096L * lzo_sizeof_dict_t))
108 lzo1x_1_12_compress ( const lzo_bytep src, lzo_uint src_len,
109 lzo_bytep dst, lzo_uintp dst_len,
113 /* use this version if you need a little more compression speed */
114 #define LZO1X_1_15_MEM_COMPRESS ((lzo_uint32) (32768L * lzo_sizeof_dict_t))
117 lzo1x_1_15_compress ( const lzo_bytep src, lzo_uint src_len,
118 lzo_bytep dst, lzo_uintp dst_len,
122 /***********************************************************************
123 // better compression ratio at the cost of more memory and time
124 ************************************************************************/
126 #define LZO1X_999_MEM_COMPRESS ((lzo_uint32) (14 * 16384L * sizeof(short)))
129 lzo1x_999_compress ( const lzo_bytep src, lzo_uint src_len,
130 lzo_bytep dst, lzo_uintp dst_len,
134 /***********************************************************************
136 ************************************************************************/
139 lzo1x_999_compress_dict ( const lzo_bytep in , lzo_uint in_len,
140 lzo_bytep out, lzo_uintp out_len,
142 const lzo_bytep dict, lzo_uint dict_len );
145 lzo1x_999_compress_level ( const lzo_bytep in , lzo_uint in_len,
146 lzo_bytep out, lzo_uintp out_len,
148 const lzo_bytep dict, lzo_uint dict_len,
150 int compression_level );
153 lzo1x_decompress_dict_safe ( const lzo_bytep in, lzo_uint in_len,
154 lzo_bytep out, lzo_uintp out_len,
155 lzo_voidp wrkmem /* NOT USED */,
156 const lzo_bytep dict, lzo_uint dict_len );
159 /***********************************************************************
160 // optimize a compressed data block
161 ************************************************************************/
164 lzo1x_optimize ( lzo_bytep in , lzo_uint in_len,
165 lzo_bytep out, lzo_uintp out_len,
166 lzo_voidp wrkmem /* NOT USED */ );
174 #endif /* already included */
177 /* vim:set ts=4 et: */