sys/sys/inflate.h

   1 /*
   2  * ----------------------------------------------------------------------------
   3  * "THE BEER-WARE LICENSE" (Revision 42):
   4  * <phk@login.dkuug.dk> wrote this file.  As long as you retain this notice you
   5  * can do whatever you want with this stuff. If we meet some day, and you think
   6  * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
   7  * ----------------------------------------------------------------------------
   8  *
   9  * $FreeBSD: src/sys/sys/inflate.h,v 1.11 1999/12/29 04:24:42 peter Exp $
  10  * $DragonFly: src/sys/sys/inflate.h,v 1.4 2006/05/20 02:42:13 dillon Exp $
  11  *
  12  */
  13 #ifndef _SYS_INFLATE_H_
  14 #define _SYS_INFLATE_H_
  15
  16 #if defined(_KERNEL) || defined(KZIP)
  17
  18 #ifndef _SYS_TYPES_H_
  19 #include <sys/types.h>
  20 #endif
  21
  22 #define GZ_EOF -1
  23
  24 #define GZ_WSIZE 0x8000
  25
  26 /*
  27  * Global variables used by inflate and friends.
  28  * This structure is used in order to make inflate() reentrant.
  29  */
  30 struct inflate {
  31         /* Public part */
  32
  33         /* This pointer is passed along to the two functions below */
  34         void           *gz_private;
  35
  36         /* Fetch next character to be uncompressed */
  37         int             (*gz_input) (void *);
  38
  39         /* Dispose of uncompressed characters */
  40         int             (*gz_output) (void *, u_char *, u_long);
  41
  42         /* Private part */
  43         u_long          gz_bb;  /* bit buffer */
  44         unsigned        gz_bk;  /* bits in bit buffer */
  45         unsigned        gz_hufts;       /* track memory usage */
  46         struct huft    *gz_fixed_tl;    /* must init to NULL !! */
  47         struct huft    *gz_fixed_td;
  48         int             gz_fixed_bl;
  49         int             gz_fixed_bd;
  50         u_char         *gz_slide;
  51         unsigned        gz_wp;
  52 };
  53
  54 int inflate     (struct inflate *);
  55
  56 #endif  /* _KERNEL || KZIP */
  57
  58 #endif  /* ! _SYS_INFLATE_H_ */