Mercurial > repos > blastem
comparison zlib/zutil.h @ 1530:00d788dac91a
Added support for reading gzipped ROMs
author | Michael Pavone <pavone@retrodev.com> |
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date | Fri, 23 Mar 2018 22:30:02 -0700 |
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1529:f7fe240a7da6 | 1530:00d788dac91a |
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1 /* zutil.h -- internal interface and configuration of the compression library | |
2 * Copyright (C) 1995-2016 Jean-loup Gailly, Mark Adler | |
3 * For conditions of distribution and use, see copyright notice in zlib.h | |
4 */ | |
5 | |
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. | |
9 */ | |
10 | |
11 /* @(#) $Id$ */ | |
12 | |
13 #ifndef ZUTIL_H | |
14 #define ZUTIL_H | |
15 | |
16 #ifdef HAVE_HIDDEN | |
17 # define ZLIB_INTERNAL __attribute__((visibility ("hidden"))) | |
18 #else | |
19 # define ZLIB_INTERNAL | |
20 #endif | |
21 | |
22 #include "zlib.h" | |
23 | |
24 #if defined(STDC) && !defined(Z_SOLO) | |
25 # if !(defined(_WIN32_WCE) && defined(_MSC_VER)) | |
26 # include <stddef.h> | |
27 # endif | |
28 # include <string.h> | |
29 # include <stdlib.h> | |
30 #endif | |
31 | |
32 #ifdef Z_SOLO | |
33 typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */ | |
34 #endif | |
35 | |
36 #ifndef local | |
37 # define local static | |
38 #endif | |
39 /* since "static" is used to mean two completely different things in C, we | |
40 define "local" for the non-static meaning of "static", for readability | |
41 (compile with -Dlocal if your debugger can't find static symbols) */ | |
42 | |
43 typedef unsigned char uch; | |
44 typedef uch FAR uchf; | |
45 typedef unsigned short ush; | |
46 typedef ush FAR ushf; | |
47 typedef unsigned long ulg; | |
48 | |
49 extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ | |
50 /* (size given to avoid silly warnings with Visual C++) */ | |
51 | |
52 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] | |
53 | |
54 #define ERR_RETURN(strm,err) \ | |
55 return (strm->msg = ERR_MSG(err), (err)) | |
56 /* To be used only when the state is known to be valid */ | |
57 | |
58 /* common constants */ | |
59 | |
60 #ifndef DEF_WBITS | |
61 # define DEF_WBITS MAX_WBITS | |
62 #endif | |
63 /* default windowBits for decompression. MAX_WBITS is for compression only */ | |
64 | |
65 #if MAX_MEM_LEVEL >= 8 | |
66 # define DEF_MEM_LEVEL 8 | |
67 #else | |
68 # define DEF_MEM_LEVEL MAX_MEM_LEVEL | |
69 #endif | |
70 /* default memLevel */ | |
71 | |
72 #define STORED_BLOCK 0 | |
73 #define STATIC_TREES 1 | |
74 #define DYN_TREES 2 | |
75 /* The three kinds of block type */ | |
76 | |
77 #define MIN_MATCH 3 | |
78 #define MAX_MATCH 258 | |
79 /* The minimum and maximum match lengths */ | |
80 | |
81 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ | |
82 | |
83 /* target dependencies */ | |
84 | |
85 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) | |
86 # define OS_CODE 0x00 | |
87 # ifndef Z_SOLO | |
88 # if defined(__TURBOC__) || defined(__BORLANDC__) | |
89 # if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) | |
90 /* Allow compilation with ANSI keywords only enabled */ | |
91 void _Cdecl farfree( void *block ); | |
92 void *_Cdecl farmalloc( unsigned long nbytes ); | |
93 # else | |
94 # include <alloc.h> | |
95 # endif | |
96 # else /* MSC or DJGPP */ | |
97 # include <malloc.h> | |
98 # endif | |
99 # endif | |
100 #endif | |
101 | |
102 #ifdef AMIGA | |
103 # define OS_CODE 1 | |
104 #endif | |
105 | |
106 #if defined(VAXC) || defined(VMS) | |
107 # define OS_CODE 2 | |
108 # define F_OPEN(name, mode) \ | |
109 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") | |
110 #endif | |
111 | |
112 #ifdef __370__ | |
113 # if __TARGET_LIB__ < 0x20000000 | |
114 # define OS_CODE 4 | |
115 # elif __TARGET_LIB__ < 0x40000000 | |
116 # define OS_CODE 11 | |
117 # else | |
118 # define OS_CODE 8 | |
119 # endif | |
120 #endif | |
121 | |
122 #if defined(ATARI) || defined(atarist) | |
123 # define OS_CODE 5 | |
124 #endif | |
125 | |
126 #ifdef OS2 | |
127 # define OS_CODE 6 | |
128 # if defined(M_I86) && !defined(Z_SOLO) | |
129 # include <malloc.h> | |
130 # endif | |
131 #endif | |
132 | |
133 #if defined(MACOS) || defined(TARGET_OS_MAC) | |
134 # define OS_CODE 7 | |
135 # ifndef Z_SOLO | |
136 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os | |
137 # include <unix.h> /* for fdopen */ | |
138 # else | |
139 # ifndef fdopen | |
140 # define fdopen(fd,mode) NULL /* No fdopen() */ | |
141 # endif | |
142 # endif | |
143 # endif | |
144 #endif | |
145 | |
146 #ifdef __acorn | |
147 # define OS_CODE 13 | |
148 #endif | |
149 | |
150 #if defined(WIN32) && !defined(__CYGWIN__) | |
151 # define OS_CODE 10 | |
152 #endif | |
153 | |
154 #ifdef _BEOS_ | |
155 # define OS_CODE 16 | |
156 #endif | |
157 | |
158 #ifdef __TOS_OS400__ | |
159 # define OS_CODE 18 | |
160 #endif | |
161 | |
162 #ifdef __APPLE__ | |
163 # define OS_CODE 19 | |
164 #endif | |
165 | |
166 #if defined(_BEOS_) || defined(RISCOS) | |
167 # define fdopen(fd,mode) NULL /* No fdopen() */ | |
168 #endif | |
169 | |
170 #if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX | |
171 # if defined(_WIN32_WCE) | |
172 # define fdopen(fd,mode) NULL /* No fdopen() */ | |
173 # ifndef _PTRDIFF_T_DEFINED | |
174 typedef int ptrdiff_t; | |
175 # define _PTRDIFF_T_DEFINED | |
176 # endif | |
177 # else | |
178 # define fdopen(fd,type) _fdopen(fd,type) | |
179 # endif | |
180 #endif | |
181 | |
182 #if defined(__BORLANDC__) && !defined(MSDOS) | |
183 #pragma warn -8004 | |
184 #pragma warn -8008 | |
185 #pragma warn -8066 | |
186 #endif | |
187 | |
188 /* provide prototypes for these when building zlib without LFS */ | |
189 #if !defined(_WIN32) && \ | |
190 (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0) | |
191 ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t)); | |
192 ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t)); | |
193 #endif | |
194 | |
195 /* common defaults */ | |
196 | |
197 #ifndef OS_CODE | |
198 # define OS_CODE 3 /* assume Unix */ | |
199 #endif | |
200 | |
201 #ifndef F_OPEN | |
202 # define F_OPEN(name, mode) fopen((name), (mode)) | |
203 #endif | |
204 | |
205 /* functions */ | |
206 | |
207 #if defined(pyr) || defined(Z_SOLO) | |
208 # define NO_MEMCPY | |
209 #endif | |
210 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) | |
211 /* Use our own functions for small and medium model with MSC <= 5.0. | |
212 * You may have to use the same strategy for Borland C (untested). | |
213 * The __SC__ check is for Symantec. | |
214 */ | |
215 # define NO_MEMCPY | |
216 #endif | |
217 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) | |
218 # define HAVE_MEMCPY | |
219 #endif | |
220 #ifdef HAVE_MEMCPY | |
221 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ | |
222 # define zmemcpy _fmemcpy | |
223 # define zmemcmp _fmemcmp | |
224 # define zmemzero(dest, len) _fmemset(dest, 0, len) | |
225 # else | |
226 # define zmemcpy memcpy | |
227 # define zmemcmp memcmp | |
228 # define zmemzero(dest, len) memset(dest, 0, len) | |
229 # endif | |
230 #else | |
231 void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); | |
232 int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); | |
233 void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len)); | |
234 #endif | |
235 | |
236 /* Diagnostic functions */ | |
237 #ifdef ZLIB_DEBUG | |
238 # include <stdio.h> | |
239 extern int ZLIB_INTERNAL z_verbose; | |
240 extern void ZLIB_INTERNAL z_error OF((char *m)); | |
241 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} | |
242 # define Trace(x) {if (z_verbose>=0) fprintf x ;} | |
243 # define Tracev(x) {if (z_verbose>0) fprintf x ;} | |
244 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} | |
245 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} | |
246 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} | |
247 #else | |
248 # define Assert(cond,msg) | |
249 # define Trace(x) | |
250 # define Tracev(x) | |
251 # define Tracevv(x) | |
252 # define Tracec(c,x) | |
253 # define Tracecv(c,x) | |
254 #endif | |
255 | |
256 #ifndef Z_SOLO | |
257 voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items, | |
258 unsigned size)); | |
259 void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr)); | |
260 #endif | |
261 | |
262 #define ZALLOC(strm, items, size) \ | |
263 (*((strm)->zalloc))((strm)->opaque, (items), (size)) | |
264 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) | |
265 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} | |
266 | |
267 /* Reverse the bytes in a 32-bit value */ | |
268 #define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \ | |
269 (((q) & 0xff00) << 8) + (((q) & 0xff) << 24)) | |
270 | |
271 #endif /* ZUTIL_H */ |