Home | History | Annotate | Download | only in src
      1 /* lzo1x_1.c -- LZO1X-1 compression
      2 
      3    This file is part of the LZO real-time data compression library.
      4 
      5    Copyright (C) 1996-2014 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 (at) oberhumer.com>
     25    http://www.oberhumer.com/opensource/lzo/
     26  */
     27 
     28 
     29 #include "lzo_conf.h"
     30 #if 1 && defined(UA_GET_LE32)
     31 #undef  LZO_DICT_USE_PTR
     32 #define LZO_DICT_USE_PTR 0
     33 #undef  lzo_dict_t
     34 #define lzo_dict_t lzo_uint16_t
     35 #endif
     36 
     37 #define LZO_NEED_DICT_H 1
     38 #ifndef D_BITS
     39 #define D_BITS          14
     40 #endif
     41 #define D_INDEX1(d,p)       d = DM(DMUL(0x21,DX3(p,5,5,6)) >> 5)
     42 #define D_INDEX2(d,p)       d = (d & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f)
     43 #if 1
     44 #define DINDEX(dv,p)        DM(((DMUL(0x1824429d,dv)) >> (32-D_BITS)))
     45 #else
     46 #define DINDEX(dv,p)        DM((dv) + ((dv) >> (32-D_BITS)))
     47 #endif
     48 #include "config1x.h"
     49 #define LZO_DETERMINISTIC !(LZO_DICT_USE_PTR)
     50 
     51 #ifndef DO_COMPRESS
     52 #define DO_COMPRESS     lzo1x_1_compress
     53 #endif
     54 
     55 #include "lzo1x_c.ch"
     56