1 /* zutil.h -- internal interface and configuration of the compression library
2 * Copyright (C) 1995-2012 Jean-loup Gailly.
3 * For conditions of distribution and use, see copyright notice in zlib.h
6 /* WARNING: this file should *not* be used by applications. It is
7 part of the implementation of the compression library and is
8 subject to change. Applications should only use zlib.h.
16 #define GCC_VER ((__GNUC__-0) * 100 + __GNUC_MINOR__-0)
17 #if ((GCC_VER >= 303 && !defined(__APPLE__)) || GCC_VER >= 400) && !defined(NO_VIZ)
18 # define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
20 # define ZLIB_INTERNAL
25 #if defined(STDC) && !defined(Z_SOLO)
26 # if !(defined(_WIN32_WCE) && defined(_MSC_VER))
34 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
40 /* compile with -Dlocal if your debugger can't find static symbols */
42 typedef unsigned char uch;
44 typedef unsigned short ush;
46 typedef unsigned long ulg;
48 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
49 /* (size given to avoid silly warnings with Visual C++) */
51 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
53 #define ERR_RETURN(strm,err) \
54 return (strm->msg = (char*)ERR_MSG(err), (err))
55 /* To be used only when the state is known to be valid */
57 /* common constants */
60 # define DEF_WBITS MAX_WBITS
62 /* default windowBits for decompression. MAX_WBITS is for compression only */
64 #if MAX_MEM_LEVEL >= 8
65 # define DEF_MEM_LEVEL 8
67 # define DEF_MEM_LEVEL MAX_MEM_LEVEL
69 /* default memLevel */
71 #define STORED_BLOCK 0
72 #define STATIC_TREES 1
74 /* The three kinds of block type */
78 /* The minimum and maximum match lengths */
80 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
82 /* target dependencies */
84 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
87 # if defined(__TURBOC__) || defined(__BORLANDC__)
88 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
89 /* Allow compilation with ANSI keywords only enabled */
90 void _Cdecl farfree( void *block );
91 void *_Cdecl farmalloc( unsigned long nbytes );
95 # else /* MSC or DJGPP */
102 # define OS_CODE 0x01
105 #if defined(VAXC) || defined(VMS)
106 # define OS_CODE 0x02
107 # define F_OPEN(name, mode) \
108 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
111 #if defined(ATARI) || defined(atarist)
112 # define OS_CODE 0x05
116 # define OS_CODE 0x06
117 # if defined(M_I86) && !defined(Z_SOLO)
122 #if defined(MACOS) || defined(TARGET_OS_MAC)
123 # define OS_CODE 0x07
125 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
126 # include <unix.h> /* for fdopen */
129 # define fdopen(fd,mode) NULL /* No fdopen() */
136 # define OS_CODE 0x0a
140 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
141 # define OS_CODE 0x0b
145 #ifdef __50SERIES /* Prime/PRIMOS */
146 # define OS_CODE 0x0f
149 #if defined(_BEOS_) || defined(RISCOS)
150 # define fdopen(fd,mode) NULL /* No fdopen() */
153 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
154 # if defined(_WIN32_WCE)
155 # define fdopen(fd,mode) NULL /* No fdopen() */
156 # ifndef _PTRDIFF_T_DEFINED
157 typedef int ptrdiff_t;
158 # define _PTRDIFF_T_DEFINED
161 # define fdopen(fd,type) _fdopen(fd,type)
165 #if defined(__BORLANDC__) && !defined(MSDOS)
171 /* provide prototypes for these when building zlib without LFS */
172 #if !defined(_WIN32) && (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
173 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
174 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
177 /* common defaults */
180 # define OS_CODE 0x03 /* assume Unix */
184 # define F_OPEN(name, mode) fopen((name), (mode))
189 #if defined(pyr) || defined(Z_SOLO)
192 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
193 /* Use our own functions for small and medium model with MSC <= 5.0.
194 * You may have to use the same strategy for Borland C (untested).
195 * The __SC__ check is for Symantec.
199 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
203 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */
204 # define zmemcpy _fmemcpy
205 # define zmemcmp _fmemcmp
206 # define zmemzero(dest, len) _fmemset(dest, 0, len)
208 # define zmemcpy memcpy
209 # define zmemcmp memcmp
210 # define zmemzero(dest, len) memset(dest, 0, len)
213 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
214 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
215 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
218 /* Diagnostic functions */
221 extern int ZLIB_INTERNAL z_verbose;
222 extern void ZLIB_INTERNAL z_error OF((char *m));
223 # define Assert(cond,msg) {if(!(cond)) z_error(msg);}
224 # define Trace(x) {if (z_verbose>=0) fprintf x ;}
225 # define Tracev(x) {if (z_verbose>0) fprintf x ;}
226 # define Tracevv(x) {if (z_verbose>1) fprintf x ;}
227 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
228 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
230 # define Assert(cond,msg)
235 # define Tracecv(c,x)
239 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
241 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
244 #define ZALLOC(strm, items, size) \
245 (*((strm)->zalloc))((strm)->opaque, (items), (size))
246 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
247 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
249 /* Reverse the bytes in a 32-bit value */
251 # if defined(_WIN32) && (_MSC_VER >= 1300) && (defined(_M_IX86) || defined(_M_X64))
253 # pragma intrinsic(_byteswap_ulong)
254 # define ZSWAP32(q) _byteswap_ulong(q)
255 # elif defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
256 # define ZSWAP32(q) __builtin_bswap32(q)
260 # define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
261 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))