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) 1996-2015 Markus Franz Xaver Johannes Oberhumer
   6    All Rights Reserved.
   7
   8    The LZO library is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2 of
  11    the License, or (at your option) any later version.
  12
  13    The LZO library is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with the LZO library; see the file COPYING.
  20    If not, write to the Free Software Foundation, Inc.,
  21    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22
  23    Markus F.X.J. Oberhumer
  24    <markus@oberhumer.com>
  25    http://www.oberhumer.com/opensource/lzo/
  26  */
  27
  28
  29 #ifndef __LZO1Y_H_INCLUDED
  30 #define __LZO1Y_H_INCLUDED 1
  31
  32 #ifndef __LZOCONF_H_INCLUDED
  33 #include <lzo/lzoconf.h>
  34 #endif
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /***********************************************************************
  42 //
  43 ************************************************************************/
  44
  45 /* Memory required for the wrkmem parameter.
  46  * When the required size is 0, you can also pass a NULL pointer.
  47  */
  48
  49 #define LZO1Y_MEM_COMPRESS      ((lzo_uint32_t) (16384L * lzo_sizeof_dict_t))
  50 #define LZO1Y_MEM_DECOMPRESS    (0)
  51 #define LZO1Y_MEM_OPTIMIZE      (0)
  52
  53
  54 /* decompression */
  55 LZO_EXTERN(int)
  56 lzo1y_decompress        ( const lzo_bytep src, lzo_uint  src_len,
  57                                 lzo_bytep dst, lzo_uintp dst_len,
  58                                 lzo_voidp wrkmem /* NOT USED */ );
  59
  60 /* safe decompression with overrun testing */
  61 LZO_EXTERN(int)
  62 lzo1y_decompress_safe   ( const lzo_bytep src, lzo_uint  src_len,
  63                                 lzo_bytep dst, lzo_uintp dst_len,
  64                                 lzo_voidp wrkmem /* NOT USED */ );
  65
  66
  67 /***********************************************************************
  68 //
  69 ************************************************************************/
  70
  71 LZO_EXTERN(int)
  72 lzo1y_1_compress        ( const lzo_bytep src, lzo_uint  src_len,
  73                                 lzo_bytep dst, lzo_uintp dst_len,
  74                                 lzo_voidp wrkmem );
  75
  76
  77 /***********************************************************************
  78 // better compression ratio at the cost of more memory and time
  79 ************************************************************************/
  80
  81 #define LZO1Y_999_MEM_COMPRESS  ((lzo_uint32_t) (14 * 16384L * sizeof(short)))
  82
  83 LZO_EXTERN(int)
  84 lzo1y_999_compress      ( const lzo_bytep src, lzo_uint  src_len,
  85                                 lzo_bytep dst, lzo_uintp dst_len,
  86                                 lzo_voidp wrkmem );
  87
  88
  89
  90 /***********************************************************************
  91 //
  92 ************************************************************************/
  93
  94 LZO_EXTERN(int)
  95 lzo1y_999_compress_dict     ( const lzo_bytep src, lzo_uint  src_len,
  96                                     lzo_bytep dst, lzo_uintp dst_len,
  97                                     lzo_voidp wrkmem,
  98                               const lzo_bytep dict, lzo_uint dict_len );
  99
 100 LZO_EXTERN(int)
 101 lzo1y_999_compress_level    ( const lzo_bytep src, lzo_uint  src_len,
 102                                     lzo_bytep dst, lzo_uintp dst_len,
 103                                     lzo_voidp wrkmem,
 104                               const lzo_bytep dict, lzo_uint dict_len,
 105                                     lzo_callback_p cb,
 106                                     int compression_level );
 107
 108 LZO_EXTERN(int)
 109 lzo1y_decompress_dict_safe ( const lzo_bytep src, lzo_uint  src_len,
 110                                    lzo_bytep dst, lzo_uintp dst_len,
 111                                    lzo_voidp wrkmem /* NOT USED */,
 112                              const lzo_bytep dict, lzo_uint dict_len );
 113
 114
 115 /***********************************************************************
 116 // optimize a compressed data block
 117 ************************************************************************/
 118
 119 LZO_EXTERN(int)
 120 lzo1y_optimize          (       lzo_bytep src, lzo_uint  src_len,
 121                                 lzo_bytep dst, lzo_uintp dst_len,
 122                                 lzo_voidp wrkmem /* NOT USED */ );
 123
 124
 125
 126 #ifdef __cplusplus
 127 } /* extern "C" */
 128 #endif
 129
 130 #endif /* already included */
 131
 132
 133 /* vim:set ts=4 sw=4 et: */