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72 lines
2.0 KiB
C
72 lines
2.0 KiB
C
/* zconf.h -- configuration of the zlib compression library
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* Copyright (C) 1995-2002 Jean-loup Gailly.
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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/* This source as presented is a modified version of original zlib for use with SSNES,
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* and must not be confused with the original software. */
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#ifndef _ZCONF_H
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#define _ZCONF_H
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#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
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# define WIN32
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#endif
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/* Some Mac compilers merge all .h files incorrectly: */
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#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__)
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# define NO_DUMMY_DECL
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#endif
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#ifndef MAX_MEM_LEVEL
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# ifdef MAXSEG_64K
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# define MAX_MEM_LEVEL 8
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# else
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# define MAX_MEM_LEVEL 9
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# endif
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#endif
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#ifndef MAX_WBITS
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# define MAX_WBITS 15 /* 32K LZ77 window */
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#endif
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/* The memory requirements for deflate are (in bytes):
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(1 << (windowBits+2)) + (1 << (memLevel+9))
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that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
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plus a few kilobytes for small objects. For example, if you want to reduce
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the default memory requirements from 256K to 128K, compile with
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make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
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Of course this will generally degrade compression (there's no free lunch).
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The memory requirements for inflate are (in bytes) 1 << windowBits
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that is, 32K for windowBits=15 (default value) plus a few kilobytes
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for small objects.
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*/
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/* Type declarations */
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#if !defined(MACOS) && !defined(TARGET_OS_MAC)
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typedef unsigned char Byte; /* 8 bits */
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#endif
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typedef Byte Bytef;
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typedef void *voidpf;
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typedef void *voidp;
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#ifdef HAVE_UNISTD_H
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# include <sys/types.h> /* for off_t */
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# include <unistd.h> /* for SEEK_* and off_t */
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# define z_off_t off_t
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#endif
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#ifndef SEEK_SET
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# define SEEK_SET 0 /* Seek from beginning of file. */
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# define SEEK_CUR 1 /* Seek from current position. */
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# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
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#endif
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#ifndef z_off_t
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# define z_off_t long
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#endif
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#endif /* _ZCONF_H */
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