release/src/router/lzo/include/lzo/lzo1z.h

   1 /* lzo1z.h -- public interface of the LZO1Z 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 __LZO1Z_H_INCLUDED
  45 #define __LZO1Z_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 LZO1Z_MEM_COMPRESS      ((lzo_uint32) (16384L * lzo_sizeof_dict_t))
  65 #define LZO1Z_MEM_DECOMPRESS    (0)
  66 #define LZO1Z_MEM_OPTIMIZE      (0)
  67
  68
  69 /* decompression */
  70 LZO_EXTERN(int)
  71 lzo1z_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 lzo1z_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 #if 0
  87 /* not yet implemented */
  88 LZO_EXTERN(int)
  89 lzo1z_1_compress        ( const lzo_bytep src, lzo_uint  src_len,
  90                                 lzo_bytep dst, lzo_uintp dst_len,
  91                                 lzo_voidp wrkmem );
  92 #endif
  93
  94
  95 /***********************************************************************
  96 // better compression ratio at the cost of more memory and time
  97 ************************************************************************/
  98
  99 #define LZO1Z_999_MEM_COMPRESS  ((lzo_uint32) (14 * 16384L * sizeof(short)))
 100
 101 LZO_EXTERN(int)
 102 lzo1z_999_compress      ( const lzo_bytep src, lzo_uint  src_len,
 103                                 lzo_bytep dst, lzo_uintp dst_len,
 104                                 lzo_voidp wrkmem );
 105
 106
 107 /***********************************************************************
 108 //
 109 ************************************************************************/
 110
 111 LZO_EXTERN(int)
 112 lzo1z_999_compress_dict     ( const lzo_bytep src, lzo_uint  src_len,
 113                                     lzo_bytep dst, lzo_uintp dst_len,
 114                                     lzo_voidp wrkmem,
 115                               const lzo_bytep dict, lzo_uint dict_len );
 116
 117 LZO_EXTERN(int)
 118 lzo1z_999_compress_level    ( const lzo_bytep src, lzo_uint  src_len,
 119                                     lzo_bytep dst, lzo_uintp dst_len,
 120                                     lzo_voidp wrkmem,
 121                               const lzo_bytep dict, lzo_uint dict_len,
 122                                     lzo_callback_p cb,
 123                                     int compression_level );
 124
 125 LZO_EXTERN(int)
 126 lzo1z_decompress_dict_safe ( const lzo_bytep src, lzo_uint  src_len,
 127                                    lzo_bytep dst, lzo_uintp dst_len,
 128                                    lzo_voidp wrkmem /* NOT USED */,
 129                              const lzo_bytep dict, lzo_uint dict_len );
 130
 131
 132 /***********************************************************************
 133 // optimize a compressed data block
 134 ************************************************************************/
 135
 136 #if 0
 137 /* not yet implemented */
 138 LZO_EXTERN(int)
 139 lzo1z_optimize          (       lzo_bytep src, lzo_uint  src_len,
 140                                 lzo_bytep dst, lzo_uintp dst_len,
 141                                 lzo_voidp wrkmem /* NOT USED */ );
 142 #endif
 143
 144
 145
 146 #ifdef __cplusplus
 147 } /* extern "C" */
 148 #endif
 149
 150 #endif /* already included */
 151
 152
 153 /* vim:set ts=4 et: */