zconf.h
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上传日期:2009-04-28
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- /* 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 */