release/src/router/lzo/include/lzo/lzo1y.h

   1 /* lzo1y.h -- public interface of the LZO1Y 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 __LZO1Y_H_INCLUDED
  45 #define __LZO1Y_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 LZO1Y_MEM_COMPRESS      ((lzo_uint32) (16384L * lzo_sizeof_dict_t))
  65 #define LZO1Y_MEM_DECOMPRESS    (0)
  66 #define LZO1Y_MEM_OPTIMIZE      (0)
  67
  68
  69 /* decompression */
  70 LZO_EXTERN(int)
  71 lzo1y_decompress        ( const lzo_bytep src, lzo_uint  src_len,
  72                                 lzo_bytep dst, lzo_uintp dst_len,
  73                                 lzo_voidp wrkmem /* NOT USED */ );
  74
  75 /* safe decompression with overrun testing */
  76 LZO_EXTERN(int)
  77 lzo1y_decompress_safe   ( const lzo_bytep src, lzo_uint  src_len,
  78                                 lzo_bytep dst, lzo_uintp dst_len,
  79                                 lzo_voidp wrkmem /* NOT USED */ );
  80
  81
  82 /***********************************************************************
  83 //
  84 ************************************************************************/
  85
  86 LZO_EXTERN(int)
  87 lzo1y_1_compress        ( const lzo_bytep src, lzo_uint  src_len,
  88                                 lzo_bytep dst, lzo_uintp dst_len,
  89                                 lzo_voidp wrkmem );
  90
  91
  92 /***********************************************************************
  93 // better compression ratio at the cost of more memory and time
  94 ************************************************************************/
  95
  96 #define LZO1Y_999_MEM_COMPRESS  ((lzo_uint32) (14 * 16384L * sizeof(short)))
  97
  98 LZO_EXTERN(int)
  99 lzo1y_999_compress      ( const lzo_bytep src, lzo_uint  src_len,
 100                                 lzo_bytep dst, lzo_uintp dst_len,
 101                                 lzo_voidp wrkmem );
 102
 103
 104
 105 /***********************************************************************
 106 //
 107 ************************************************************************/
 108
 109 LZO_EXTERN(int)
 110 lzo1y_999_compress_dict     ( const lzo_bytep src, lzo_uint  src_len,
 111                                     lzo_bytep dst, lzo_uintp dst_len,
 112                                     lzo_voidp wrkmem,
 113                               const lzo_bytep dict, lzo_uint dict_len );
 114
 115 LZO_EXTERN(int)
 116 lzo1y_999_compress_level    ( const lzo_bytep src, lzo_uint  src_len,
 117                                     lzo_bytep dst, lzo_uintp dst_len,
 118                                     lzo_voidp wrkmem,
 119                               const lzo_bytep dict, lzo_uint dict_len,
 120                                     lzo_callback_p cb,
 121                                     int compression_level );
 122
 123 LZO_EXTERN(int)
 124 lzo1y_decompress_dict_safe ( const lzo_bytep src, lzo_uint  src_len,
 125                                    lzo_bytep dst, lzo_uintp dst_len,
 126                                    lzo_voidp wrkmem /* NOT USED */,
 127                              const lzo_bytep dict, lzo_uint dict_len );
 128
 129
 130 /***********************************************************************
 131 // optimize a compressed data block
 132 ************************************************************************/
 133
 134 LZO_EXTERN(int)
 135 lzo1y_optimize          (       lzo_bytep src, lzo_uint  src_len,
 136                                 lzo_bytep dst, lzo_uintp dst_len,
 137                                 lzo_voidp wrkmem /* NOT USED */ );
 138
 139
 140
 141 #ifdef __cplusplus
 142 } /* extern "C" */
 143 #endif
 144
 145 #endif /* already included */
 146
 147
 148 /* vim:set ts=4 et: */