46 строки
1.5 KiB
C
46 строки
1.5 KiB
C
/* zconf.h -- configuration of the zlib compression library
|
|
* Copyright (C) 1995-1998 Jean-loup Gailly.
|
|
* For conditions of distribution and use, see copyright notice in zlib.h
|
|
*/
|
|
|
|
/* @(#) $Id$ */
|
|
|
|
#ifndef _ZCONF_H
|
|
#define _ZCONF_H
|
|
|
|
/* The memory requirements for deflate are (in bytes):
|
|
(1 << (windowBits+2)) + (1 << (memLevel+9))
|
|
that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
|
|
plus a few kilobytes for small objects. For example, if you want to reduce
|
|
the default memory requirements from 256K to 128K, compile with
|
|
make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
|
|
Of course this will generally degrade compression (there's no free lunch).
|
|
|
|
The memory requirements for inflate are (in bytes) 1 << windowBits
|
|
that is, 32K for windowBits=15 (default value) plus a few kilobytes
|
|
for small objects.
|
|
*/
|
|
|
|
/* Maximum value for memLevel in deflateInit2 */
|
|
#ifndef MAX_MEM_LEVEL
|
|
# define MAX_MEM_LEVEL 8
|
|
#endif
|
|
|
|
/* Maximum value for windowBits in deflateInit2 and inflateInit2.
|
|
* WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
|
|
* created by gzip. (Files created by minigzip can still be extracted by
|
|
* gzip.)
|
|
*/
|
|
#ifndef MAX_WBITS
|
|
# define MAX_WBITS 15 /* 32K LZ77 window */
|
|
#endif
|
|
|
|
/* Type declarations */
|
|
|
|
typedef unsigned char Byte; /* 8 bits */
|
|
typedef unsigned int uInt; /* 16 bits or more */
|
|
typedef unsigned long uLong; /* 32 bits or more */
|
|
typedef void *voidp;
|
|
|
|
#endif /* _ZCONF_H */
|