1*4882a593Smuzhiyun /* zutil.h -- internal interface and configuration of the compression library 2*4882a593Smuzhiyun * Copyright (C) 1995-2005 Jean-loup Gailly. 3*4882a593Smuzhiyun * For conditions of distribution and use, see copyright notice in zlib.h 4*4882a593Smuzhiyun */ 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun /* WARNING: this file should *not* be used by applications. It is 7*4882a593Smuzhiyun part of the implementation of the compression library and is 8*4882a593Smuzhiyun subject to change. Applications should only use zlib.h. 9*4882a593Smuzhiyun */ 10*4882a593Smuzhiyun 11*4882a593Smuzhiyun /* @(#) $Id$ */ 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #ifndef ZUTIL_H 14*4882a593Smuzhiyun #define ZUTIL_H 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun #define ZLIB_INTERNAL 17*4882a593Smuzhiyun #include "zlib.h" 18*4882a593Smuzhiyun 19*4882a593Smuzhiyun #ifdef STDC 20*4882a593Smuzhiyun # ifndef _WIN32_WCE 21*4882a593Smuzhiyun # include <stddef.h> 22*4882a593Smuzhiyun # endif 23*4882a593Smuzhiyun # include <string.h> 24*4882a593Smuzhiyun # include <stdlib.h> 25*4882a593Smuzhiyun #endif 26*4882a593Smuzhiyun #ifdef NO_ERRNO_H 27*4882a593Smuzhiyun # ifdef _WIN32_WCE 28*4882a593Smuzhiyun /* The Microsoft C Run-Time Library for Windows CE doesn't have 29*4882a593Smuzhiyun * errno. We define it as a global variable to simplify porting. 30*4882a593Smuzhiyun * Its value is always 0 and should not be used. We rename it to 31*4882a593Smuzhiyun * avoid conflict with other libraries that use the same workaround. 32*4882a593Smuzhiyun */ 33*4882a593Smuzhiyun # define errno z_errno 34*4882a593Smuzhiyun # endif 35*4882a593Smuzhiyun extern int errno; 36*4882a593Smuzhiyun #else 37*4882a593Smuzhiyun # ifndef _WIN32_WCE 38*4882a593Smuzhiyun # include <errno.h> 39*4882a593Smuzhiyun # endif 40*4882a593Smuzhiyun #endif 41*4882a593Smuzhiyun 42*4882a593Smuzhiyun #ifndef local 43*4882a593Smuzhiyun # define local static 44*4882a593Smuzhiyun #endif 45*4882a593Smuzhiyun /* compile with -Dlocal if your debugger can't find static symbols */ 46*4882a593Smuzhiyun 47*4882a593Smuzhiyun typedef unsigned char uch; 48*4882a593Smuzhiyun typedef uch FAR uchf; 49*4882a593Smuzhiyun typedef unsigned short ush; 50*4882a593Smuzhiyun typedef ush FAR ushf; 51*4882a593Smuzhiyun typedef unsigned long ulg; 52*4882a593Smuzhiyun 53*4882a593Smuzhiyun extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ 54*4882a593Smuzhiyun /* (size given to avoid silly warnings with Visual C++) */ 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] 57*4882a593Smuzhiyun 58*4882a593Smuzhiyun #define ERR_RETURN(strm,err) \ 59*4882a593Smuzhiyun return (strm->msg = (char*)ERR_MSG(err), (err)) 60*4882a593Smuzhiyun /* To be used only when the state is known to be valid */ 61*4882a593Smuzhiyun 62*4882a593Smuzhiyun /* common constants */ 63*4882a593Smuzhiyun 64*4882a593Smuzhiyun #ifndef DEF_WBITS 65*4882a593Smuzhiyun # define DEF_WBITS MAX_WBITS 66*4882a593Smuzhiyun #endif 67*4882a593Smuzhiyun /* default windowBits for decompression. MAX_WBITS is for compression only */ 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun #if MAX_MEM_LEVEL >= 8 70*4882a593Smuzhiyun # define DEF_MEM_LEVEL 8 71*4882a593Smuzhiyun #else 72*4882a593Smuzhiyun # define DEF_MEM_LEVEL MAX_MEM_LEVEL 73*4882a593Smuzhiyun #endif 74*4882a593Smuzhiyun /* default memLevel */ 75*4882a593Smuzhiyun 76*4882a593Smuzhiyun #define STORED_BLOCK 0 77*4882a593Smuzhiyun #define STATIC_TREES 1 78*4882a593Smuzhiyun #define DYN_TREES 2 79*4882a593Smuzhiyun /* The three kinds of block type */ 80*4882a593Smuzhiyun 81*4882a593Smuzhiyun #define MIN_MATCH 3 82*4882a593Smuzhiyun #define MAX_MATCH 258 83*4882a593Smuzhiyun /* The minimum and maximum match lengths */ 84*4882a593Smuzhiyun 85*4882a593Smuzhiyun /* functions */ 86*4882a593Smuzhiyun #ifdef CONFIG_GZIP_COMPRESSED 87*4882a593Smuzhiyun #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ 88*4882a593Smuzhiyun # define OS_CODE 0x03 /* assume Unix */ 89*4882a593Smuzhiyun #endif 90*4882a593Smuzhiyun 91*4882a593Smuzhiyun #include <linux/string.h> 92*4882a593Smuzhiyun #define zmemcpy memcpy 93*4882a593Smuzhiyun #define zmemcmp memcmp 94*4882a593Smuzhiyun #define zmemzero(dest, len) memset(dest, 0, len) 95*4882a593Smuzhiyun 96*4882a593Smuzhiyun /* Diagnostic functions */ 97*4882a593Smuzhiyun #ifdef DEBUG 98*4882a593Smuzhiyun /* Not valid for U-Boot 99*4882a593Smuzhiyun # include <stdio.h> */ 100*4882a593Smuzhiyun extern int z_verbose; 101*4882a593Smuzhiyun extern void z_error OF((char *m)); 102*4882a593Smuzhiyun # define Assert(cond,msg) {if(!(cond)) z_error(msg);} 103*4882a593Smuzhiyun # define Trace(x) {if (z_verbose>=0) fprintf x ;} 104*4882a593Smuzhiyun # define Tracev(x) {if (z_verbose>0) fprintf x ;} 105*4882a593Smuzhiyun # define Tracevv(x) {if (z_verbose>1) fprintf x ;} 106*4882a593Smuzhiyun # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} 107*4882a593Smuzhiyun # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} 108*4882a593Smuzhiyun #else 109*4882a593Smuzhiyun # define Assert(cond,msg) 110*4882a593Smuzhiyun # define Trace(x) 111*4882a593Smuzhiyun # define Tracev(x) 112*4882a593Smuzhiyun # define Tracevv(x) 113*4882a593Smuzhiyun # define Tracec(c,x) 114*4882a593Smuzhiyun # define Tracecv(c,x) 115*4882a593Smuzhiyun #endif 116*4882a593Smuzhiyun 117*4882a593Smuzhiyun 118*4882a593Smuzhiyun voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); 119*4882a593Smuzhiyun void zcfree OF((voidpf opaque, voidpf ptr, unsigned size)); 120*4882a593Smuzhiyun 121*4882a593Smuzhiyun #define ZALLOC(strm, items, size) \ 122*4882a593Smuzhiyun (*((strm)->zalloc))((strm)->opaque, (items), (size)) 123*4882a593Smuzhiyun #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr), 0) 124*4882a593Smuzhiyun #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} 125*4882a593Smuzhiyun 126*4882a593Smuzhiyun #endif /* ZUTIL_H */ 127