release/src/router/lzo/include/lzo/lzo1b.h

   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
  52 extern "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
  74 LZO_EXTERN(int)
  75 lzo1b_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 */
  81 LZO_EXTERN(int)
  82 lzo1b_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 */
  87 LZO_EXTERN(int)
  88 lzo1b_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
  97 LZO_EXTERN(int)
  98 lzo1b_1_compress        ( const lzo_bytep src, lzo_uint  src_len,
  99                                 lzo_bytep dst, lzo_uintp dst_len,
 100                                 lzo_voidp wrkmem );
 101 LZO_EXTERN(int)
 102 lzo1b_2_compress        ( const lzo_bytep src, lzo_uint  src_len,
 103                                 lzo_bytep dst, lzo_uintp dst_len,
 104                                 lzo_voidp wrkmem );
 105 LZO_EXTERN(int)
 106 lzo1b_3_compress        ( const lzo_bytep src, lzo_uint  src_len,
 107                                 lzo_bytep dst, lzo_uintp dst_len,
 108                                 lzo_voidp wrkmem );
 109 LZO_EXTERN(int)
 110 lzo1b_4_compress        ( const lzo_bytep src, lzo_uint  src_len,
 111                                 lzo_bytep dst, lzo_uintp dst_len,
 112                                 lzo_voidp wrkmem );
 113 LZO_EXTERN(int)
 114 lzo1b_5_compress        ( const lzo_bytep src, lzo_uint  src_len,
 115                                 lzo_bytep dst, lzo_uintp dst_len,
 116                                 lzo_voidp wrkmem );
 117 LZO_EXTERN(int)
 118 lzo1b_6_compress        ( const lzo_bytep src, lzo_uint  src_len,
 119                                 lzo_bytep dst, lzo_uintp dst_len,
 120                                 lzo_voidp wrkmem );
 121 LZO_EXTERN(int)
 122 lzo1b_7_compress        ( const lzo_bytep src, lzo_uint  src_len,
 123                                 lzo_bytep dst, lzo_uintp dst_len,
 124                                 lzo_voidp wrkmem );
 125 LZO_EXTERN(int)
 126 lzo1b_8_compress        ( const lzo_bytep src, lzo_uint  src_len,
 127                                 lzo_bytep dst, lzo_uintp dst_len,
 128                                 lzo_voidp wrkmem );
 129 LZO_EXTERN(int)
 130 lzo1b_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
 141 LZO_EXTERN(int)
 142 lzo1b_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
 149 LZO_EXTERN(int)
 150 lzo1b_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: */