1/* lzo1b.h -- public interface of the LZO1B compression algorithm
2
3   This file is part of the LZO real-time data compression library.
4
5   Copyright (C) 2011 Markus Franz Xaver Johannes Oberhumer
6   Copyright (C) 2010 Markus Franz Xaver Johannes Oberhumer
7   Copyright (C) 2009 Markus Franz Xaver Johannes Oberhumer
8   Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer
9   Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer
10   Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer
11   Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer
12   Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer
13   Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer
14   Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
15   Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
16   Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
17   Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
18   Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
19   Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
20   Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
21   All Rights Reserved.
22
23   The LZO library is free software; you can redistribute it and/or
24   modify it under the terms of the GNU General Public License as
25   published by the Free Software Foundation; either version 2 of
26   the License, or (at your option) any later version.
27
28   The LZO library is distributed in the hope that it will be useful,
29   but WITHOUT ANY WARRANTY; without even the implied warranty of
30   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
31   GNU General Public License for more details.
32
33   You should have received a copy of the GNU General Public License
34   along with the LZO library; see the file COPYING.
35   If not, write to the Free Software Foundation, Inc.,
36   51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
37
38   Markus F.X.J. Oberhumer
39   <markus@oberhumer.com>
40   http://www.oberhumer.com/opensource/lzo/
41 */
42
43
44#ifndef __LZO1B_H_INCLUDED
45#define __LZO1B_H_INCLUDED 1
46
47#ifndef __LZOCONF_H_INCLUDED
48#include "lzoconf.h"
49#endif
50
51#ifdef __cplusplus
52extern "C" {
53#endif
54
55
56/***********************************************************************
57//
58************************************************************************/
59
60/* Memory required for the wrkmem parameter.
61 * When the required size is 0, you can also pass a NULL pointer.
62 */
63
64#define LZO1B_MEM_COMPRESS      ((lzo_uint32) (16384L * lzo_sizeof_dict_t))
65#define LZO1B_MEM_DECOMPRESS    (0)
66
67
68/* compression levels */
69#define LZO1B_BEST_SPEED             1
70#define LZO1B_BEST_COMPRESSION       9
71#define LZO1B_DEFAULT_COMPRESSION  (-1)     /* fastest by default */
72
73
74LZO_EXTERN(int)
75lzo1b_compress          ( const lzo_bytep src, lzo_uint  src_len,
76                                lzo_bytep dst, lzo_uintp dst_len,
77                                lzo_voidp wrkmem,
78                                int compression_level );
79
80/* decompression */
81LZO_EXTERN(int)
82lzo1b_decompress        ( const lzo_bytep src, lzo_uint  src_len,
83                                lzo_bytep dst, lzo_uintp dst_len,
84                                lzo_voidp wrkmem /* NOT USED */ );
85
86/* safe decompression with overrun testing */
87LZO_EXTERN(int)
88lzo1b_decompress_safe   ( const lzo_bytep src, lzo_uint  src_len,
89                                lzo_bytep dst, lzo_uintp dst_len,
90                                lzo_voidp wrkmem /* NOT USED */ );
91
92
93/***********************************************************************
94//
95************************************************************************/
96
97LZO_EXTERN(int)
98lzo1b_1_compress        ( const lzo_bytep src, lzo_uint  src_len,
99                                lzo_bytep dst, lzo_uintp dst_len,
100                                lzo_voidp wrkmem );
101LZO_EXTERN(int)
102lzo1b_2_compress        ( const lzo_bytep src, lzo_uint  src_len,
103                                lzo_bytep dst, lzo_uintp dst_len,
104                                lzo_voidp wrkmem );
105LZO_EXTERN(int)
106lzo1b_3_compress        ( const lzo_bytep src, lzo_uint  src_len,
107                                lzo_bytep dst, lzo_uintp dst_len,
108                                lzo_voidp wrkmem );
109LZO_EXTERN(int)
110lzo1b_4_compress        ( const lzo_bytep src, lzo_uint  src_len,
111                                lzo_bytep dst, lzo_uintp dst_len,
112                                lzo_voidp wrkmem );
113LZO_EXTERN(int)
114lzo1b_5_compress        ( const lzo_bytep src, lzo_uint  src_len,
115                                lzo_bytep dst, lzo_uintp dst_len,
116                                lzo_voidp wrkmem );
117LZO_EXTERN(int)
118lzo1b_6_compress        ( const lzo_bytep src, lzo_uint  src_len,
119                                lzo_bytep dst, lzo_uintp dst_len,
120                                lzo_voidp wrkmem );
121LZO_EXTERN(int)
122lzo1b_7_compress        ( const lzo_bytep src, lzo_uint  src_len,
123                                lzo_bytep dst, lzo_uintp dst_len,
124                                lzo_voidp wrkmem );
125LZO_EXTERN(int)
126lzo1b_8_compress        ( const lzo_bytep src, lzo_uint  src_len,
127                                lzo_bytep dst, lzo_uintp dst_len,
128                                lzo_voidp wrkmem );
129LZO_EXTERN(int)
130lzo1b_9_compress        ( const lzo_bytep src, lzo_uint  src_len,
131                                lzo_bytep dst, lzo_uintp dst_len,
132                                lzo_voidp wrkmem );
133
134
135/***********************************************************************
136// better compression ratio at the cost of more memory and time
137************************************************************************/
138
139#define LZO1B_99_MEM_COMPRESS   ((lzo_uint32) (65536L * lzo_sizeof_dict_t))
140
141LZO_EXTERN(int)
142lzo1b_99_compress       ( const lzo_bytep src, lzo_uint  src_len,
143                                lzo_bytep dst, lzo_uintp dst_len,
144                                lzo_voidp wrkmem );
145
146
147#define LZO1B_999_MEM_COMPRESS  ((lzo_uint32) (3 * 65536L * sizeof(lzo_xint)))
148
149LZO_EXTERN(int)
150lzo1b_999_compress      ( const lzo_bytep src, lzo_uint  src_len,
151                                lzo_bytep dst, lzo_uintp dst_len,
152                                lzo_voidp wrkmem );
153
154
155
156#ifdef __cplusplus
157} /* extern "C" */
158#endif
159
160#endif /* already included */
161
162
163/* vim:set ts=4 et: */
164