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1 /* Portions Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies). |
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2 * All rights reserved. |
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3 */ |
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4 |
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5 /* zutil.h -- internal interface and configuration of the compression library |
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6 * Copyright (C) 1995-2005 Jean-loup Gailly. |
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7 * For conditions of distribution and use, see copyright notice in zlib.h |
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8 */ |
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9 |
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10 /* WARNING: this file should *not* be used by applications. It is |
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11 part of the implementation of the compression library and is |
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12 subject to change. Applications should only use zlib.h. |
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13 */ |
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14 |
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15 #ifndef ZUTIL_H |
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16 #define ZUTIL_H |
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17 |
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18 #define ZLIB_INTERNAL |
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19 #include "libzcore.h" |
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20 |
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21 #if defined(SYMBIAN_EZLIB_DEVICE) && !defined(LIBZGZIO_H) |
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22 #include <e32std.h> |
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23 #endif |
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24 |
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25 #if !defined(SYMBIAN_EZLIB_DEVICE) || defined(LIBZGZIO_H) |
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26 |
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27 #ifdef STDC |
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28 # ifndef _WIN32_WCE |
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29 # include <stddef.h> |
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30 # endif |
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31 # include <string.h> |
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32 # include <stdlib.h> |
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33 #endif |
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34 #ifdef NO_ERRNO_H |
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35 # ifdef _WIN32_WCE |
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36 /* The Microsoft C Run-Time Library for Windows CE doesn't have |
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37 * errno. We define it as a global variable to simplify porting. |
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38 * Its value is always 0 and should not be used. We rename it to |
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39 * avoid conflict with other libraries that use the same workaround. |
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40 */ |
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41 # define errno z_errno |
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42 # endif |
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43 extern int errno; |
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44 #else |
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45 # ifndef _WIN32_WCE |
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46 # include <errno.h> |
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47 # endif |
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48 #endif |
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49 |
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50 #endif //SYMBIAN_EZLIB_DEVICE |
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51 |
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52 #ifndef local |
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53 # define local static |
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54 #endif |
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55 /* compile with -Dlocal if your debugger can't find static symbols */ |
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56 |
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57 typedef unsigned char uch; |
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58 typedef uch FAR uchf; |
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59 typedef unsigned short ush; |
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60 typedef ush FAR ushf; |
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61 typedef unsigned long ulg; |
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62 |
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63 extern const char * const z_errmsg[10]; /* indexed by 2-zlib_error */ |
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64 /* (size given to avoid silly warnings with Visual C++) */ |
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65 |
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66 |
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67 |
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68 #define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)] |
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69 |
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70 #define ERR_RETURN(strm,err) \ |
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71 return (strm->msg = (char*)ERR_MSG(err), (err)) |
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72 /* To be used only when the state is known to be valid */ |
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73 |
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74 /* common constants */ |
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75 |
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76 #ifndef DEF_WBITS |
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77 # define DEF_WBITS MAX_WBITS |
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78 #endif |
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79 /* default windowBits for decompression. MAX_WBITS is for compression only */ |
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80 |
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81 #if MAX_MEM_LEVEL >= 8 |
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82 #define DEF_MEM_LEVEL 8 |
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83 #else |
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84 #define DEF_MEM_LEVEL MAX_MEM_LEVEL |
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85 #endif |
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86 |
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87 /* default memLevel */ |
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88 |
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89 #define STORED_BLOCK 0 |
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90 #define STATIC_TREES 1 |
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91 #define DYN_TREES 2 |
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92 /* The three kinds of block type */ |
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93 |
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94 #define MIN_MATCH 3 |
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95 #define MAX_MATCH 258 |
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96 /* The minimum and maximum match lengths */ |
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97 |
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98 #define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */ |
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99 |
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100 /* target dependencies */ |
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101 |
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102 |
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103 #if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32)) |
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104 # define OS_CODE 0x00 |
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105 # if defined(__TURBOC__) || defined(__BORLANDC__) |
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106 # if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__)) |
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107 /* Allow compilation with ANSI keywords only enabled */ |
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108 void _Cdecl farfree( void *block ); |
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109 void *_Cdecl farmalloc( unsigned long nbytes ); |
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110 # else |
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111 # include <alloc.h> |
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112 # endif |
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113 # else /* MSC or DJGPP */ |
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114 # include <malloc.h> |
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115 # endif |
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116 #endif |
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117 |
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118 #ifdef AMIGA |
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119 # define OS_CODE 0x01 |
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120 #endif |
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121 |
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122 #if defined(VAXC) || defined(VMS) |
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123 # define OS_CODE 0x02 |
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124 # define F_OPEN(name, mode) \ |
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125 fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512") |
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126 #endif |
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127 |
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128 #if defined(ATARI) || defined(atarist) |
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129 # define OS_CODE 0x05 |
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130 #endif |
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131 |
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132 #ifdef OS2 |
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133 # define OS_CODE 0x06 |
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134 # ifdef M_I86 |
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135 #include <malloc.h> |
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136 # endif |
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137 #endif |
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138 |
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139 #if defined(MACOS) || defined(TARGET_OS_MAC) |
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140 # define OS_CODE 0x07 |
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141 # if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os |
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142 # include <unix.h> /* for fdopen */ |
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143 # else |
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144 # ifndef fdopen |
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145 # define fdopen(fd,mode) NULL /* No fdopen() */ |
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146 # endif |
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147 # endif |
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148 #endif |
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149 |
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150 #ifdef TOPS20 |
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151 # define OS_CODE 0x0a |
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152 #endif |
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153 |
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154 #ifdef WIN32 |
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155 # ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */ |
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156 # define OS_CODE 0x0b |
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157 # endif |
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158 #endif |
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159 |
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160 #ifdef __50SERIES /* Prime/PRIMOS */ |
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161 # define OS_CODE 0x0f |
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162 #endif |
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163 |
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164 #if defined(_BEOS_) || defined(RISCOS) |
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165 # define fdopen(fd,mode) NULL /* No fdopen() */ |
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166 #endif |
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167 |
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168 #if (defined(_MSC_VER) && (_MSC_VER > 600)) |
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169 # if defined(_WIN32_WCE) |
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170 # define fdopen(fd,mode) NULL /* No fdopen() */ |
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171 # ifndef _PTRDIFF_T_DEFINED |
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172 typedef int ptrdiff_t; |
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173 # define _PTRDIFF_T_DEFINED |
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174 # endif |
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175 # else |
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176 # define fdopen(fd,type) _fdopen(fd,type) |
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177 # endif |
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178 #endif |
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179 |
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180 /* common defaults */ |
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181 |
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182 #ifndef OS_CODE |
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183 # define OS_CODE 0x03 /* assume Unix */ |
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184 #endif |
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185 |
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186 #if !defined(SYMBIAN_EZLIB_DEVICE) || defined(LIBZGZIO_H) |
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187 #ifndef F_OPEN |
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188 # define F_OPEN(name, mode) fopen((name), (mode)) |
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189 #endif |
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190 |
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191 /* functions */ |
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192 |
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193 #if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550) |
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194 # ifndef HAVE_VSNPRINTF |
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195 # define HAVE_VSNPRINTF |
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196 # endif |
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197 #endif |
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198 #if defined(__CYGWIN__) |
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199 # ifndef HAVE_VSNPRINTF |
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200 # define HAVE_VSNPRINTF |
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201 # endif |
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202 #endif |
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203 #ifndef HAVE_VSNPRINTF |
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204 # ifdef MSDOS |
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205 /* vsnprintf may exist on some MS-DOS compilers (DJGPP?), |
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206 but for now we just assume it doesn't. */ |
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207 # define NO_vsnprintf |
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208 # endif |
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209 # ifdef __TURBOC__ |
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210 # define NO_vsnprintf |
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211 # endif |
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212 # ifdef WIN32 |
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213 /* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */ |
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214 # if !defined(vsnprintf) && !defined(NO_vsnprintf) |
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215 #ifndef SYMBIAN_EZLIB_DEVICE |
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216 # define vsnprintf _vsnprintf |
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217 # endif //SYMBIAN_EZLIB_DEVICE |
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218 # endif |
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219 # endif |
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220 # ifdef __SASC |
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221 # define NO_vsnprintf |
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222 # endif |
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223 #endif |
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224 #ifdef VMS |
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225 # define NO_vsnprintf |
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226 #endif |
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227 |
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228 #endif // !SYMBIAN_EZLIB_DEVICE || LIBZGZIO_H |
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229 |
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230 #if defined(pyr) |
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231 # define NO_MEMCPY |
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232 #endif |
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233 #if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__) |
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234 /* Use our own functions for small and medium model with MSC <= 5.0. |
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235 * You may have to use the same strategy for Borland C (untested). |
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236 * The __SC__ check is for Symantec. |
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237 */ |
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238 # define NO_MEMCPY |
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239 #endif |
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240 #if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY) |
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241 # define HAVE_MEMCPY |
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242 #endif |
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243 #ifdef HAVE_MEMCPY |
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244 # ifdef SMALL_MEDIUM /* MSDOS small or medium model */ |
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245 # define zmemcpy _fmemcpy |
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246 # define zmemcmp _fmemcmp |
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247 # define zmemzero(dest, len) _fmemset(dest, 0, len) |
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248 # else |
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249 # define zmemcpy memcpy |
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250 # define zmemcmp memcmp |
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251 # define zmemzero(dest, len) memset(dest, 0, len) |
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252 # endif |
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253 #else |
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254 extern void zmemcpy OF((Bytef* dest, const Bytef* source, uInt len)); |
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255 extern int zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len)); |
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256 extern void zmemzero OF((Bytef* dest, uInt len)); |
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257 #endif |
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258 |
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259 // Native Symbian Memory Functions Symbian |
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260 #if defined(SYMBIAN_EZLIB_DEVICE) && !defined(LIBZGZIO_H) |
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261 #define HAVE_MEMCPY |
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262 #undef zmemcpy |
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263 #undef zmemcmp |
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264 #undef zmemzero |
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265 #define zmemcpy Mem::Copy |
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266 #define zmemcmp(s1,s2,len) Mem::Compare(s1,len,s2,len) |
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267 #define zmemzero(dest, len) Mem::FillZ(dest, len) |
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268 #endif //SYMBIAN_EZLIB_DEVICE && !LIBZGZIO_H |
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269 |
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270 /* Diagnostic functions */ |
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271 #ifdef DEBUG |
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272 # include <stdio.h> |
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273 extern int z_verbose; |
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274 extern void z_error OF((char *m)); |
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275 # define Assert(cond,msg) {if(!(cond)) z_error(msg);} |
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276 # define Trace(x) {if (z_verbose>=0) fprintf x ;} |
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277 # define Tracev(x) {if (z_verbose>0) fprintf x ;} |
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278 # define Tracevv(x) {if (z_verbose>1) fprintf x ;} |
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279 # define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;} |
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280 # define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;} |
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281 #else |
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282 # define Assert(cond,msg) |
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283 # define Trace(x) |
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284 # define Tracev(x) |
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285 # define Tracevv(x) |
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286 # define Tracec(c,x) |
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287 # define Tracecv(c,x) |
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288 #endif |
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289 |
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290 |
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291 voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size)); |
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292 void zcfree OF((voidpf opaque, voidpf ptr)); |
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293 |
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294 #define ZALLOC(strm, items, size) \ |
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295 (*((strm)->zalloc))((strm)->opaque, (items), (size)) |
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296 #define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr)) |
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297 #define TRY_FREE(s, p) {if (p) ZFREE(s, p);} |
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298 |
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299 #endif /* ZUTIL_H */ |