153 lines
4.9 KiB
C
153 lines
4.9 KiB
C
/* zutil.h -- internal interface and configuration of the compression library
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* Copyright (C) 1995-2005 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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/* WARNING: this file should *not* be used by applications. It is
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part of the implementation of the compression library and is
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subject to change. Applications should only use zlib.h.
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*/
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/* @(#) $Id$ */
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#ifndef ZUTIL_H
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#define ZUTIL_H
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#define ZLIB_INTERNAL
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#include "zlib.h"
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#ifdef STDC
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#ifndef _WIN32_WCE
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#include <stddef.h>
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#endif
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#include <string.h>
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#include <stdlib.h>
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#endif
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#ifdef NO_ERRNO_H
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#ifdef _WIN32_WCE
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/* The Microsoft C Run-Time Library for Windows CE doesn't have
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* errno. We define it as a global variable to simplify porting.
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* Its value is always 0 and should not be used. We rename it to
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* avoid conflict with other libraries that use the same workaround.
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*/
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#define errno z_errno
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#endif
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extern int errno;
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#else
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#ifndef _WIN32_WCE
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#include <errno.h>
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#endif
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#endif
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#ifndef local
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#define local static
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#endif
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/* compile with -Dlocal if your debugger can't find static symbols */
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typedef unsigned char uch;
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typedef uch FAR uchf;
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typedef unsigned short ush;
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typedef ush FAR ushf;
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typedef unsigned long ulg;
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extern const char *const z_errmsg[10]; /* indexed by 2-zlib_error */
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/* (size given to avoid silly warnings with Visual C++) */
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#define ERR_MSG(err) z_errmsg[Z_NEED_DICT - (err)]
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#define ERR_RETURN(strm, err) return (strm->msg = (char *)ERR_MSG(err), (err))
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/* To be used only when the state is known to be valid */
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/* common constants */
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#ifndef DEF_WBITS
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#define DEF_WBITS MAX_WBITS
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#endif
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/* default windowBits for decompression. MAX_WBITS is for compression only */
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#if MAX_MEM_LEVEL >= 8
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#define DEF_MEM_LEVEL 8
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#else
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#define DEF_MEM_LEVEL MAX_MEM_LEVEL
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#endif
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/* default memLevel */
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#define STORED_BLOCK 0
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#define STATIC_TREES 1
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#define DYN_TREES 2
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/* The three kinds of block type */
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#define MIN_MATCH 3
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#define MAX_MATCH 258
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/* The minimum and maximum match lengths */
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/* functions */
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#ifdef CONFIG_GZIP_COMPRESSED
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#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
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#define OS_CODE 0x03 /* assume Unix */
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#endif
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// #include <linux/string.h>
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#define zmemcpy memcpy
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#define zmemcmp memcmp
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#define zmemzero(dest, len) memset(dest, 0, len)
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/* Diagnostic functions */
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#ifdef DEBUG
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/* Not valid for U-Boot
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# include <stdio.h> */
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extern int z_verbose;
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extern void z_error OF((char *m));
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#define Assert(cond, msg) \
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{ \
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if (!(cond)) \
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z_error(msg); \
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}
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#define Trace(x) \
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{ \
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if (z_verbose >= 0) \
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fprintf x; \
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}
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#define Tracev(x) \
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{ \
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if (z_verbose > 0) \
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fprintf x; \
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}
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#define Tracevv(x) \
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{ \
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if (z_verbose > 1) \
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fprintf x; \
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}
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#define Tracec(c, x) \
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{ \
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if (z_verbose > 0 && (c)) \
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fprintf x; \
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}
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#define Tracecv(c, x) \
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{ \
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if (z_verbose > 1 && (c)) \
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fprintf x; \
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}
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#else
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#define Assert(cond, msg)
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#define Trace(x)
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#define Tracev(x)
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#define Tracevv(x)
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#define Tracec(c, x)
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#define Tracecv(c, x)
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#endif
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voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
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void zcfree OF((voidpf opaque, voidpf ptr, unsigned size));
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#define ZALLOC(strm, items, size) \
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(*((strm)->zalloc))((strm)->opaque, (items), (size))
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#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), 0)
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#define TRY_FREE(s, p) \
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{ \
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if (p) \
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ZFREE(s, p); \
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}
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#endif /* ZUTIL_H */
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