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1 |
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2 /* pngconf.h - machine configurable file for libpng |
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3 * |
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4 * libpng version 1.2.32 - September 18, 2008 |
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5 * For conditions of distribution and use, see copyright notice in png.h |
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6 * Copyright (c) 1998-2008 Glenn Randers-Pehrson |
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7 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
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8 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
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9 */ |
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10 |
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11 /* Any machine specific code is near the front of this file, so if you |
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12 * are configuring libpng for a machine, you may want to read the section |
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13 * starting here down to where it starts to typedef png_color, png_text, |
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14 * and png_info. |
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15 */ |
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16 |
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17 #ifndef PNGCONF_H |
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18 #define PNGCONF_H |
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19 |
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20 #define PNG_1_2_X |
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21 |
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22 /* |
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23 * PNG_USER_CONFIG has to be defined on the compiler command line. This |
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24 * includes the resource compiler for Windows DLL configurations. |
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25 */ |
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26 #ifdef PNG_USER_CONFIG |
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27 # ifndef PNG_USER_PRIVATEBUILD |
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28 # define PNG_USER_PRIVATEBUILD |
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29 # endif |
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30 #include "pngusr.h" |
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31 #endif |
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32 |
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33 /* PNG_CONFIGURE_LIBPNG is set by the "configure" script. */ |
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34 #ifdef PNG_CONFIGURE_LIBPNG |
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35 #ifdef HAVE_CONFIG_H |
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36 #include "config.h" |
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37 #endif |
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38 #endif |
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39 |
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40 /* |
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41 * Added at libpng-1.2.8 |
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42 * |
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43 * If you create a private DLL you need to define in "pngusr.h" the followings: |
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44 * #define PNG_USER_PRIVATEBUILD <Describes by whom and why this version of |
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45 * the DLL was built> |
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46 * e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons." |
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47 * #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to |
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48 * distinguish your DLL from those of the official release. These |
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49 * correspond to the trailing letters that come after the version |
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50 * number and must match your private DLL name> |
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51 * e.g. // private DLL "libpng13gx.dll" |
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52 * #define PNG_USER_DLLFNAME_POSTFIX "gx" |
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53 * |
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54 * The following macros are also at your disposal if you want to complete the |
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55 * DLL VERSIONINFO structure. |
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56 * - PNG_USER_VERSIONINFO_COMMENTS |
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57 * - PNG_USER_VERSIONINFO_COMPANYNAME |
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58 * - PNG_USER_VERSIONINFO_LEGALTRADEMARKS |
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59 */ |
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60 |
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61 #ifdef __STDC__ |
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62 #ifdef SPECIALBUILD |
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63 # pragma message("PNG_LIBPNG_SPECIALBUILD (and deprecated SPECIALBUILD)\ |
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64 are now LIBPNG reserved macros. Use PNG_USER_PRIVATEBUILD instead.") |
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65 #endif |
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66 |
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67 #ifdef PRIVATEBUILD |
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68 # pragma message("PRIVATEBUILD is deprecated.\ |
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69 Use PNG_USER_PRIVATEBUILD instead.") |
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70 # define PNG_USER_PRIVATEBUILD PRIVATEBUILD |
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71 #endif |
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72 #endif /* __STDC__ */ |
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73 |
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74 #ifndef PNG_VERSION_INFO_ONLY |
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75 |
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76 /* End of material added to libpng-1.2.8 */ |
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77 |
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78 /* Added at libpng-1.2.19, removed at libpng-1.2.20 because it caused trouble |
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79 Restored at libpng-1.2.21 */ |
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80 #if !defined(PNG_NO_WARN_UNINITIALIZED_ROW) && \ |
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81 !defined(PNG_WARN_UNINITIALIZED_ROW) |
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82 # define PNG_WARN_UNINITIALIZED_ROW 1 |
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83 #endif |
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84 /* End of material added at libpng-1.2.19/1.2.21 */ |
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85 |
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86 /* This is the size of the compression buffer, and thus the size of |
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87 * an IDAT chunk. Make this whatever size you feel is best for your |
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88 * machine. One of these will be allocated per png_struct. When this |
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89 * is full, it writes the data to the disk, and does some other |
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90 * calculations. Making this an extremely small size will slow |
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91 * the library down, but you may want to experiment to determine |
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92 * where it becomes significant, if you are concerned with memory |
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93 * usage. Note that zlib allocates at least 32Kb also. For readers, |
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94 * this describes the size of the buffer available to read the data in. |
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95 * Unless this gets smaller than the size of a row (compressed), |
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96 * it should not make much difference how big this is. |
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97 */ |
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98 |
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99 #ifndef PNG_ZBUF_SIZE |
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100 # define PNG_ZBUF_SIZE 8192 |
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101 #endif |
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102 |
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103 /* Enable if you want a write-only libpng */ |
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104 |
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105 #ifndef PNG_NO_READ_SUPPORTED |
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106 # define PNG_READ_SUPPORTED |
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107 #endif |
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108 |
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109 /* Enable if you want a read-only libpng */ |
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110 |
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111 #ifndef PNG_NO_WRITE_SUPPORTED |
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112 # define PNG_WRITE_SUPPORTED |
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113 #endif |
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114 |
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115 /* Enabled by default in 1.2.0. You can disable this if you don't need to |
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116 support PNGs that are embedded in MNG datastreams */ |
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117 #if !defined(PNG_1_0_X) && !defined(PNG_NO_MNG_FEATURES) |
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118 # ifndef PNG_MNG_FEATURES_SUPPORTED |
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119 # define PNG_MNG_FEATURES_SUPPORTED |
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120 # endif |
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121 #endif |
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122 |
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123 #ifndef PNG_NO_FLOATING_POINT_SUPPORTED |
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124 # ifndef PNG_FLOATING_POINT_SUPPORTED |
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125 # define PNG_FLOATING_POINT_SUPPORTED |
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126 # endif |
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127 #endif |
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128 |
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129 /* If you are running on a machine where you cannot allocate more |
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130 * than 64K of memory at once, uncomment this. While libpng will not |
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131 * normally need that much memory in a chunk (unless you load up a very |
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132 * large file), zlib needs to know how big of a chunk it can use, and |
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133 * libpng thus makes sure to check any memory allocation to verify it |
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134 * will fit into memory. |
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135 #define PNG_MAX_MALLOC_64K |
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136 */ |
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137 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) |
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138 # define PNG_MAX_MALLOC_64K |
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139 #endif |
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140 |
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141 /* Special munging to support doing things the 'cygwin' way: |
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142 * 'Normal' png-on-win32 defines/defaults: |
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143 * PNG_BUILD_DLL -- building dll |
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144 * PNG_USE_DLL -- building an application, linking to dll |
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145 * (no define) -- building static library, or building an |
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146 * application and linking to the static lib |
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147 * 'Cygwin' defines/defaults: |
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148 * PNG_BUILD_DLL -- (ignored) building the dll |
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149 * (no define) -- (ignored) building an application, linking to the dll |
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150 * PNG_STATIC -- (ignored) building the static lib, or building an |
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151 * application that links to the static lib. |
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152 * ALL_STATIC -- (ignored) building various static libs, or building an |
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153 * application that links to the static libs. |
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154 * Thus, |
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155 * a cygwin user should define either PNG_BUILD_DLL or PNG_STATIC, and |
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156 * this bit of #ifdefs will define the 'correct' config variables based on |
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157 * that. If a cygwin user *wants* to define 'PNG_USE_DLL' that's okay, but |
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158 * unnecessary. |
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159 * |
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160 * Also, the precedence order is: |
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161 * ALL_STATIC (since we can't #undef something outside our namespace) |
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162 * PNG_BUILD_DLL |
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163 * PNG_STATIC |
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164 * (nothing) == PNG_USE_DLL |
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165 * |
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166 * CYGWIN (2002-01-20): The preceding is now obsolete. With the advent |
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167 * of auto-import in binutils, we no longer need to worry about |
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168 * __declspec(dllexport) / __declspec(dllimport) and friends. Therefore, |
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169 * we don't need to worry about PNG_STATIC or ALL_STATIC when it comes |
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170 * to __declspec() stuff. However, we DO need to worry about |
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171 * PNG_BUILD_DLL and PNG_STATIC because those change some defaults |
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172 * such as CONSOLE_IO and whether GLOBAL_ARRAYS are allowed. |
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173 */ |
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174 #if defined(__CYGWIN__) |
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175 # if defined(ALL_STATIC) |
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176 # if defined(PNG_BUILD_DLL) |
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177 # undef PNG_BUILD_DLL |
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178 # endif |
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179 # if defined(PNG_USE_DLL) |
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180 # undef PNG_USE_DLL |
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181 # endif |
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182 # if defined(PNG_DLL) |
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183 # undef PNG_DLL |
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184 # endif |
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185 # if !defined(PNG_STATIC) |
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186 # define PNG_STATIC |
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187 # endif |
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188 # else |
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189 # if defined (PNG_BUILD_DLL) |
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190 # if defined(PNG_STATIC) |
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191 # undef PNG_STATIC |
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192 # endif |
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193 # if defined(PNG_USE_DLL) |
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194 # undef PNG_USE_DLL |
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195 # endif |
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196 # if !defined(PNG_DLL) |
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197 # define PNG_DLL |
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198 # endif |
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199 # else |
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200 # if defined(PNG_STATIC) |
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201 # if defined(PNG_USE_DLL) |
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202 # undef PNG_USE_DLL |
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203 # endif |
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204 # if defined(PNG_DLL) |
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205 # undef PNG_DLL |
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206 # endif |
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207 # else |
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208 # if !defined(PNG_USE_DLL) |
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209 # define PNG_USE_DLL |
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210 # endif |
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211 # if !defined(PNG_DLL) |
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212 # define PNG_DLL |
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213 # endif |
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214 # endif |
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215 # endif |
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216 # endif |
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217 #endif |
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218 |
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219 /* This protects us against compilers that run on a windowing system |
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220 * and thus don't have or would rather us not use the stdio types: |
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221 * stdin, stdout, and stderr. The only one currently used is stderr |
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222 * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will |
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223 * prevent these from being compiled and used. #defining PNG_NO_STDIO |
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224 * will also prevent these, plus will prevent the entire set of stdio |
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225 * macros and functions (FILE *, printf, etc.) from being compiled and used, |
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226 * unless (PNG_DEBUG > 0) has been #defined. |
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227 * |
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228 * #define PNG_NO_CONSOLE_IO |
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229 * #define PNG_NO_STDIO |
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230 */ |
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231 |
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232 #if defined(_WIN32_WCE) |
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233 # include <windows.h> |
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234 /* Console I/O functions are not supported on WindowsCE */ |
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235 # define PNG_NO_CONSOLE_IO |
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236 # ifdef PNG_DEBUG |
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237 # undef PNG_DEBUG |
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238 # endif |
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239 #endif |
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240 |
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241 #ifdef PNG_BUILD_DLL |
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242 # ifndef PNG_CONSOLE_IO_SUPPORTED |
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243 # ifndef PNG_NO_CONSOLE_IO |
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244 # define PNG_NO_CONSOLE_IO |
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245 # endif |
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246 # endif |
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247 #endif |
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248 |
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249 # ifdef PNG_NO_STDIO |
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250 # ifndef PNG_NO_CONSOLE_IO |
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251 # define PNG_NO_CONSOLE_IO |
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252 # endif |
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253 # ifdef PNG_DEBUG |
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254 # if (PNG_DEBUG > 0) |
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255 # include <stdio.h> |
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256 # endif |
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257 # endif |
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258 # else |
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259 # if !defined(_WIN32_WCE) |
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260 /* "stdio.h" functions are not supported on WindowsCE */ |
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261 # include <stdio.h> |
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262 # endif |
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263 # endif |
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264 |
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265 /* This macro protects us against machines that don't have function |
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266 * prototypes (ie K&R style headers). If your compiler does not handle |
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267 * function prototypes, define this macro and use the included ansi2knr. |
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268 * I've always been able to use _NO_PROTO as the indicator, but you may |
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269 * need to drag the empty declaration out in front of here, or change the |
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270 * ifdef to suit your own needs. |
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271 */ |
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272 #ifndef PNGARG |
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273 |
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274 #ifdef OF /* zlib prototype munger */ |
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275 # define PNGARG(arglist) OF(arglist) |
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276 #else |
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277 |
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278 #ifdef _NO_PROTO |
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279 # define PNGARG(arglist) () |
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280 # ifndef PNG_TYPECAST_NULL |
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281 # define PNG_TYPECAST_NULL |
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282 # endif |
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283 #else |
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284 # define PNGARG(arglist) arglist |
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285 #endif /* _NO_PROTO */ |
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286 |
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287 |
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288 #endif /* OF */ |
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289 |
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290 #endif /* PNGARG */ |
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291 |
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292 /* Try to determine if we are compiling on a Mac. Note that testing for |
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293 * just __MWERKS__ is not good enough, because the Codewarrior is now used |
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294 * on non-Mac platforms. |
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295 */ |
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296 #ifndef MACOS |
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297 # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ |
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298 defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) |
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299 # define MACOS |
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300 # endif |
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301 #endif |
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302 |
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303 /* enough people need this for various reasons to include it here */ |
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304 #if !defined(MACOS) && !defined(RISCOS) && !defined(_WIN32_WCE) |
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305 # include <sys/types.h> |
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306 #endif |
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307 |
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308 #if !defined(PNG_SETJMP_NOT_SUPPORTED) && !defined(PNG_NO_SETJMP_SUPPORTED) |
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309 # define PNG_SETJMP_SUPPORTED |
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310 #endif |
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311 |
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312 #ifdef PNG_SETJMP_SUPPORTED |
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313 /* This is an attempt to force a single setjmp behaviour on Linux. If |
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314 * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. |
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315 */ |
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316 |
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317 # ifdef __linux__ |
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318 # ifdef _BSD_SOURCE |
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319 # define PNG_SAVE_BSD_SOURCE |
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320 # undef _BSD_SOURCE |
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321 # endif |
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322 # ifdef _SETJMP_H |
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323 /* If you encounter a compiler error here, see the explanation |
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324 * near the end of INSTALL. |
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325 */ |
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326 __pngconf.h__ already includes setjmp.h; |
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327 __dont__ include it again.; |
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328 # endif |
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329 # endif /* __linux__ */ |
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330 |
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331 /* include setjmp.h for error handling */ |
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332 # include <setjmp.h> |
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333 |
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334 # ifdef __linux__ |
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335 # ifdef PNG_SAVE_BSD_SOURCE |
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336 # ifndef _BSD_SOURCE |
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337 # define _BSD_SOURCE |
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338 # endif |
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339 # undef PNG_SAVE_BSD_SOURCE |
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340 # endif |
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341 # endif /* __linux__ */ |
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342 #endif /* PNG_SETJMP_SUPPORTED */ |
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343 |
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344 #ifdef BSD |
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345 # include <strings.h> |
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346 #else |
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347 # include <string.h> |
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348 #endif |
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349 |
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350 /* Other defines for things like memory and the like can go here. */ |
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351 #ifdef PNG_INTERNAL |
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352 |
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353 #include <stdlib.h> |
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354 |
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355 /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which |
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356 * aren't usually used outside the library (as far as I know), so it is |
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357 * debatable if they should be exported at all. In the future, when it is |
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358 * possible to have run-time registry of chunk-handling functions, some of |
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359 * these will be made available again. |
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360 #define PNG_EXTERN extern |
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361 */ |
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362 #define PNG_EXTERN |
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363 |
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364 /* Other defines specific to compilers can go here. Try to keep |
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365 * them inside an appropriate ifdef/endif pair for portability. |
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366 */ |
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367 |
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368 #if defined(PNG_FLOATING_POINT_SUPPORTED) |
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369 # if defined(MACOS) |
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370 /* We need to check that <math.h> hasn't already been included earlier |
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371 * as it seems it doesn't agree with <fp.h>, yet we should really use |
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372 * <fp.h> if possible. |
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373 */ |
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374 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) |
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375 # include <fp.h> |
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376 # endif |
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377 # else |
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378 # include <math.h> |
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379 # endif |
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380 # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) |
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381 /* Amiga SAS/C: We must include builtin FPU functions when compiling using |
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382 * MATH=68881 |
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383 */ |
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384 # include <m68881.h> |
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385 # endif |
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386 #endif |
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387 |
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388 /* Codewarrior on NT has linking problems without this. */ |
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389 #if (defined(__MWERKS__) && defined(WIN32)) || defined(__STDC__) |
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390 # define PNG_ALWAYS_EXTERN |
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391 #endif |
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392 |
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393 /* This provides the non-ANSI (far) memory allocation routines. */ |
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394 #if defined(__TURBOC__) && defined(__MSDOS__) |
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395 # include <mem.h> |
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396 # include <alloc.h> |
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397 #endif |
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398 |
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399 /* I have no idea why is this necessary... */ |
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400 #if defined(_MSC_VER) && (defined(WIN32) || defined(_Windows) || \ |
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401 defined(_WINDOWS) || defined(_WIN32) || defined(__WIN32__)) |
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402 # include <malloc.h> |
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403 #endif |
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404 |
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405 /* This controls how fine the dithering gets. As this allocates |
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406 * a largish chunk of memory (32K), those who are not as concerned |
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407 * with dithering quality can decrease some or all of these. |
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408 */ |
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409 #ifndef PNG_DITHER_RED_BITS |
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410 # define PNG_DITHER_RED_BITS 5 |
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411 #endif |
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412 #ifndef PNG_DITHER_GREEN_BITS |
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413 # define PNG_DITHER_GREEN_BITS 5 |
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414 #endif |
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415 #ifndef PNG_DITHER_BLUE_BITS |
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416 # define PNG_DITHER_BLUE_BITS 5 |
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417 #endif |
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418 |
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419 /* This controls how fine the gamma correction becomes when you |
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420 * are only interested in 8 bits anyway. Increasing this value |
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421 * results in more memory being used, and more pow() functions |
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422 * being called to fill in the gamma tables. Don't set this value |
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423 * less then 8, and even that may not work (I haven't tested it). |
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424 */ |
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425 |
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426 #ifndef PNG_MAX_GAMMA_8 |
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427 # define PNG_MAX_GAMMA_8 11 |
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428 #endif |
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429 |
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430 /* This controls how much a difference in gamma we can tolerate before |
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431 * we actually start doing gamma conversion. |
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432 */ |
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433 #ifndef PNG_GAMMA_THRESHOLD |
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434 # define PNG_GAMMA_THRESHOLD 0.05 |
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435 #endif |
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436 |
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437 #endif /* PNG_INTERNAL */ |
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438 |
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439 /* The following uses const char * instead of char * for error |
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440 * and warning message functions, so some compilers won't complain. |
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441 * If you do not want to use const, define PNG_NO_CONST here. |
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442 */ |
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443 |
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444 #ifndef PNG_NO_CONST |
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445 # define PNG_CONST const |
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446 #else |
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447 # define PNG_CONST |
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448 #endif |
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449 |
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450 /* The following defines give you the ability to remove code from the |
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451 * library that you will not be using. I wish I could figure out how to |
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452 * automate this, but I can't do that without making it seriously hard |
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453 * on the users. So if you are not using an ability, change the #define |
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454 * to and #undef, and that part of the library will not be compiled. If |
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455 * your linker can't find a function, you may want to make sure the |
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456 * ability is defined here. Some of these depend upon some others being |
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457 * defined. I haven't figured out all the interactions here, so you may |
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458 * have to experiment awhile to get everything to compile. If you are |
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459 * creating or using a shared library, you probably shouldn't touch this, |
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460 * as it will affect the size of the structures, and this will cause bad |
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461 * things to happen if the library and/or application ever change. |
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462 */ |
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463 |
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464 /* Any features you will not be using can be undef'ed here */ |
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465 |
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466 /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user |
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467 * to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS |
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468 * on the compile line, then pick and choose which ones to define without |
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469 * having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED |
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470 * if you only want to have a png-compliant reader/writer but don't need |
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471 * any of the extra transformations. This saves about 80 kbytes in a |
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472 * typical installation of the library. (PNG_NO_* form added in version |
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473 * 1.0.1c, for consistency) |
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474 */ |
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475 |
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476 /* The size of the png_text structure changed in libpng-1.0.6 when |
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477 * iTXt support was added. iTXt support was turned off by default through |
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478 * libpng-1.2.x, to support old apps that malloc the png_text structure |
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479 * instead of calling png_set_text() and letting libpng malloc it. It |
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480 * was turned on by default in libpng-1.3.0. |
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481 */ |
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482 |
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483 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) |
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484 # ifndef PNG_NO_iTXt_SUPPORTED |
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485 # define PNG_NO_iTXt_SUPPORTED |
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486 # endif |
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487 # ifndef PNG_NO_READ_iTXt |
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488 # define PNG_NO_READ_iTXt |
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489 # endif |
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490 # ifndef PNG_NO_WRITE_iTXt |
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491 # define PNG_NO_WRITE_iTXt |
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492 # endif |
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493 #endif |
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494 |
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495 #if !defined(PNG_NO_iTXt_SUPPORTED) |
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496 # if !defined(PNG_READ_iTXt_SUPPORTED) && !defined(PNG_NO_READ_iTXt) |
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497 # define PNG_READ_iTXt |
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498 # endif |
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499 # if !defined(PNG_WRITE_iTXt_SUPPORTED) && !defined(PNG_NO_WRITE_iTXt) |
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500 # define PNG_WRITE_iTXt |
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501 # endif |
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502 #endif |
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503 |
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504 /* The following support, added after version 1.0.0, can be turned off here en |
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505 * masse by defining PNG_LEGACY_SUPPORTED in case you need binary compatibility |
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506 * with old applications that require the length of png_struct and png_info |
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507 * to remain unchanged. |
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508 */ |
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509 |
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510 #ifdef PNG_LEGACY_SUPPORTED |
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511 # define PNG_NO_FREE_ME |
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512 # define PNG_NO_READ_UNKNOWN_CHUNKS |
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513 # define PNG_NO_WRITE_UNKNOWN_CHUNKS |
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514 # define PNG_NO_READ_USER_CHUNKS |
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515 # define PNG_NO_READ_iCCP |
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516 # define PNG_NO_WRITE_iCCP |
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517 # define PNG_NO_READ_iTXt |
|
518 # define PNG_NO_WRITE_iTXt |
|
519 # define PNG_NO_READ_sCAL |
|
520 # define PNG_NO_WRITE_sCAL |
|
521 # define PNG_NO_READ_sPLT |
|
522 # define PNG_NO_WRITE_sPLT |
|
523 # define PNG_NO_INFO_IMAGE |
|
524 # define PNG_NO_READ_RGB_TO_GRAY |
|
525 # define PNG_NO_READ_USER_TRANSFORM |
|
526 # define PNG_NO_WRITE_USER_TRANSFORM |
|
527 # define PNG_NO_USER_MEM |
|
528 # define PNG_NO_READ_EMPTY_PLTE |
|
529 # define PNG_NO_MNG_FEATURES |
|
530 # define PNG_NO_FIXED_POINT_SUPPORTED |
|
531 #endif |
|
532 |
|
533 /* Ignore attempt to turn off both floating and fixed point support */ |
|
534 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \ |
|
535 !defined(PNG_NO_FIXED_POINT_SUPPORTED) |
|
536 # define PNG_FIXED_POINT_SUPPORTED |
|
537 #endif |
|
538 |
|
539 #ifndef PNG_NO_FREE_ME |
|
540 # define PNG_FREE_ME_SUPPORTED |
|
541 #endif |
|
542 |
|
543 #if defined(PNG_READ_SUPPORTED) |
|
544 |
|
545 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ |
|
546 !defined(PNG_NO_READ_TRANSFORMS) |
|
547 # define PNG_READ_TRANSFORMS_SUPPORTED |
|
548 #endif |
|
549 |
|
550 #ifdef PNG_READ_TRANSFORMS_SUPPORTED |
|
551 # ifndef PNG_NO_READ_EXPAND |
|
552 # define PNG_READ_EXPAND_SUPPORTED |
|
553 # endif |
|
554 # ifndef PNG_NO_READ_SHIFT |
|
555 # define PNG_READ_SHIFT_SUPPORTED |
|
556 # endif |
|
557 # ifndef PNG_NO_READ_PACK |
|
558 # define PNG_READ_PACK_SUPPORTED |
|
559 # endif |
|
560 # ifndef PNG_NO_READ_BGR |
|
561 # define PNG_READ_BGR_SUPPORTED |
|
562 # endif |
|
563 # ifndef PNG_NO_READ_SWAP |
|
564 # define PNG_READ_SWAP_SUPPORTED |
|
565 # endif |
|
566 # ifndef PNG_NO_READ_PACKSWAP |
|
567 # define PNG_READ_PACKSWAP_SUPPORTED |
|
568 # endif |
|
569 # ifndef PNG_NO_READ_INVERT |
|
570 # define PNG_READ_INVERT_SUPPORTED |
|
571 # endif |
|
572 # ifndef PNG_NO_READ_DITHER |
|
573 # define PNG_READ_DITHER_SUPPORTED |
|
574 # endif |
|
575 # ifndef PNG_NO_READ_BACKGROUND |
|
576 # define PNG_READ_BACKGROUND_SUPPORTED |
|
577 # endif |
|
578 # ifndef PNG_NO_READ_16_TO_8 |
|
579 # define PNG_READ_16_TO_8_SUPPORTED |
|
580 # endif |
|
581 # ifndef PNG_NO_READ_FILLER |
|
582 # define PNG_READ_FILLER_SUPPORTED |
|
583 # endif |
|
584 # ifndef PNG_NO_READ_GAMMA |
|
585 # define PNG_READ_GAMMA_SUPPORTED |
|
586 # endif |
|
587 # ifndef PNG_NO_READ_GRAY_TO_RGB |
|
588 # define PNG_READ_GRAY_TO_RGB_SUPPORTED |
|
589 # endif |
|
590 # ifndef PNG_NO_READ_SWAP_ALPHA |
|
591 # define PNG_READ_SWAP_ALPHA_SUPPORTED |
|
592 # endif |
|
593 # ifndef PNG_NO_READ_INVERT_ALPHA |
|
594 # define PNG_READ_INVERT_ALPHA_SUPPORTED |
|
595 # endif |
|
596 # ifndef PNG_NO_READ_STRIP_ALPHA |
|
597 # define PNG_READ_STRIP_ALPHA_SUPPORTED |
|
598 # endif |
|
599 # ifndef PNG_NO_READ_USER_TRANSFORM |
|
600 # define PNG_READ_USER_TRANSFORM_SUPPORTED |
|
601 # endif |
|
602 # ifndef PNG_NO_READ_RGB_TO_GRAY |
|
603 # define PNG_READ_RGB_TO_GRAY_SUPPORTED |
|
604 # endif |
|
605 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ |
|
606 |
|
607 #if !defined(PNG_NO_PROGRESSIVE_READ) && \ |
|
608 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */ |
|
609 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ |
|
610 #endif /* about interlacing capability! You'll */ |
|
611 /* still have interlacing unless you change the following line: */ |
|
612 |
|
613 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */ |
|
614 |
|
615 #ifndef PNG_NO_READ_COMPOSITE_NODIV |
|
616 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */ |
|
617 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */ |
|
618 # endif |
|
619 #endif |
|
620 |
|
621 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) |
|
622 /* Deprecated, will be removed from version 2.0.0. |
|
623 Use PNG_MNG_FEATURES_SUPPORTED instead. */ |
|
624 #ifndef PNG_NO_READ_EMPTY_PLTE |
|
625 # define PNG_READ_EMPTY_PLTE_SUPPORTED |
|
626 #endif |
|
627 #endif |
|
628 |
|
629 #endif /* PNG_READ_SUPPORTED */ |
|
630 |
|
631 #if defined(PNG_WRITE_SUPPORTED) |
|
632 |
|
633 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ |
|
634 !defined(PNG_NO_WRITE_TRANSFORMS) |
|
635 # define PNG_WRITE_TRANSFORMS_SUPPORTED |
|
636 #endif |
|
637 |
|
638 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED |
|
639 # ifndef PNG_NO_WRITE_SHIFT |
|
640 # define PNG_WRITE_SHIFT_SUPPORTED |
|
641 # endif |
|
642 # ifndef PNG_NO_WRITE_PACK |
|
643 # define PNG_WRITE_PACK_SUPPORTED |
|
644 # endif |
|
645 # ifndef PNG_NO_WRITE_BGR |
|
646 # define PNG_WRITE_BGR_SUPPORTED |
|
647 # endif |
|
648 # ifndef PNG_NO_WRITE_SWAP |
|
649 # define PNG_WRITE_SWAP_SUPPORTED |
|
650 # endif |
|
651 # ifndef PNG_NO_WRITE_PACKSWAP |
|
652 # define PNG_WRITE_PACKSWAP_SUPPORTED |
|
653 # endif |
|
654 # ifndef PNG_NO_WRITE_INVERT |
|
655 # define PNG_WRITE_INVERT_SUPPORTED |
|
656 # endif |
|
657 # ifndef PNG_NO_WRITE_FILLER |
|
658 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */ |
|
659 # endif |
|
660 # ifndef PNG_NO_WRITE_SWAP_ALPHA |
|
661 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED |
|
662 # endif |
|
663 # ifndef PNG_NO_WRITE_INVERT_ALPHA |
|
664 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED |
|
665 # endif |
|
666 # ifndef PNG_NO_WRITE_USER_TRANSFORM |
|
667 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED |
|
668 # endif |
|
669 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ |
|
670 |
|
671 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \ |
|
672 !defined(PNG_WRITE_INTERLACING_SUPPORTED) |
|
673 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant |
|
674 encoders, but can cause trouble |
|
675 if left undefined */ |
|
676 #endif |
|
677 |
|
678 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \ |
|
679 !defined(PNG_WRITE_WEIGHTED_FILTER) && \ |
|
680 defined(PNG_FLOATING_POINT_SUPPORTED) |
|
681 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED |
|
682 #endif |
|
683 |
|
684 #ifndef PNG_NO_WRITE_FLUSH |
|
685 # define PNG_WRITE_FLUSH_SUPPORTED |
|
686 #endif |
|
687 |
|
688 #if defined(PNG_1_0_X) || defined (PNG_1_2_X) |
|
689 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */ |
|
690 #ifndef PNG_NO_WRITE_EMPTY_PLTE |
|
691 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED |
|
692 #endif |
|
693 #endif |
|
694 |
|
695 #endif /* PNG_WRITE_SUPPORTED */ |
|
696 |
|
697 #ifndef PNG_1_0_X |
|
698 # ifndef PNG_NO_ERROR_NUMBERS |
|
699 # define PNG_ERROR_NUMBERS_SUPPORTED |
|
700 # endif |
|
701 #endif /* PNG_1_0_X */ |
|
702 |
|
703 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ |
|
704 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) |
|
705 # ifndef PNG_NO_USER_TRANSFORM_PTR |
|
706 # define PNG_USER_TRANSFORM_PTR_SUPPORTED |
|
707 # endif |
|
708 #endif |
|
709 |
|
710 #ifndef PNG_NO_STDIO |
|
711 # define PNG_TIME_RFC1123_SUPPORTED |
|
712 #endif |
|
713 |
|
714 /* This adds extra functions in pngget.c for accessing data from the |
|
715 * info pointer (added in version 0.99) |
|
716 * png_get_image_width() |
|
717 * png_get_image_height() |
|
718 * png_get_bit_depth() |
|
719 * png_get_color_type() |
|
720 * png_get_compression_type() |
|
721 * png_get_filter_type() |
|
722 * png_get_interlace_type() |
|
723 * png_get_pixel_aspect_ratio() |
|
724 * png_get_pixels_per_meter() |
|
725 * png_get_x_offset_pixels() |
|
726 * png_get_y_offset_pixels() |
|
727 * png_get_x_offset_microns() |
|
728 * png_get_y_offset_microns() |
|
729 */ |
|
730 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED) |
|
731 # define PNG_EASY_ACCESS_SUPPORTED |
|
732 #endif |
|
733 |
|
734 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0 |
|
735 * and removed from version 1.2.20. The following will be removed |
|
736 * from libpng-1.4.0 |
|
737 */ |
|
738 |
|
739 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE) |
|
740 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED |
|
741 # define PNG_OPTIMIZED_CODE_SUPPORTED |
|
742 # endif |
|
743 #endif |
|
744 |
|
745 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE) |
|
746 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED |
|
747 # define PNG_ASSEMBLER_CODE_SUPPORTED |
|
748 # endif |
|
749 |
|
750 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4) |
|
751 /* work around 64-bit gcc compiler bugs in gcc-3.x */ |
|
752 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) |
|
753 # define PNG_NO_MMX_CODE |
|
754 # endif |
|
755 # endif |
|
756 |
|
757 # if defined(__APPLE__) |
|
758 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) |
|
759 # define PNG_NO_MMX_CODE |
|
760 # endif |
|
761 # endif |
|
762 |
|
763 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh)) |
|
764 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) |
|
765 # define PNG_NO_MMX_CODE |
|
766 # endif |
|
767 # endif |
|
768 |
|
769 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE) |
|
770 # define PNG_MMX_CODE_SUPPORTED |
|
771 # endif |
|
772 |
|
773 #endif |
|
774 /* end of obsolete code to be removed from libpng-1.4.0 */ |
|
775 |
|
776 #if !defined(PNG_1_0_X) |
|
777 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED) |
|
778 # define PNG_USER_MEM_SUPPORTED |
|
779 #endif |
|
780 #endif /* PNG_1_0_X */ |
|
781 |
|
782 /* Added at libpng-1.2.6 */ |
|
783 #if !defined(PNG_1_0_X) |
|
784 #ifndef PNG_SET_USER_LIMITS_SUPPORTED |
|
785 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED) |
|
786 # define PNG_SET_USER_LIMITS_SUPPORTED |
|
787 #endif |
|
788 #endif |
|
789 #endif /* PNG_1_0_X */ |
|
790 |
|
791 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter |
|
792 * how large, set these limits to 0x7fffffffL |
|
793 */ |
|
794 #ifndef PNG_USER_WIDTH_MAX |
|
795 # define PNG_USER_WIDTH_MAX 1000000L |
|
796 #endif |
|
797 #ifndef PNG_USER_HEIGHT_MAX |
|
798 # define PNG_USER_HEIGHT_MAX 1000000L |
|
799 #endif |
|
800 |
|
801 /* These are currently experimental features, define them if you want */ |
|
802 |
|
803 /* very little testing */ |
|
804 /* |
|
805 #ifdef PNG_READ_SUPPORTED |
|
806 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED |
|
807 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED |
|
808 # endif |
|
809 #endif |
|
810 */ |
|
811 |
|
812 /* This is only for PowerPC big-endian and 680x0 systems */ |
|
813 /* some testing */ |
|
814 /* |
|
815 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED |
|
816 # define PNG_READ_BIG_ENDIAN_SUPPORTED |
|
817 #endif |
|
818 */ |
|
819 |
|
820 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */ |
|
821 /* |
|
822 #define PNG_NO_POINTER_INDEXING |
|
823 */ |
|
824 |
|
825 /* These functions are turned off by default, as they will be phased out. */ |
|
826 /* |
|
827 #define PNG_USELESS_TESTS_SUPPORTED |
|
828 #define PNG_CORRECT_PALETTE_SUPPORTED |
|
829 */ |
|
830 |
|
831 /* Any chunks you are not interested in, you can undef here. The |
|
832 * ones that allocate memory may be expecially important (hIST, |
|
833 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info |
|
834 * a bit smaller. |
|
835 */ |
|
836 |
|
837 #if defined(PNG_READ_SUPPORTED) && \ |
|
838 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ |
|
839 !defined(PNG_NO_READ_ANCILLARY_CHUNKS) |
|
840 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED |
|
841 #endif |
|
842 |
|
843 #if defined(PNG_WRITE_SUPPORTED) && \ |
|
844 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ |
|
845 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) |
|
846 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED |
|
847 #endif |
|
848 |
|
849 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED |
|
850 |
|
851 #ifdef PNG_NO_READ_TEXT |
|
852 # define PNG_NO_READ_iTXt |
|
853 # define PNG_NO_READ_tEXt |
|
854 # define PNG_NO_READ_zTXt |
|
855 #endif |
|
856 #ifndef PNG_NO_READ_bKGD |
|
857 # define PNG_READ_bKGD_SUPPORTED |
|
858 # define PNG_bKGD_SUPPORTED |
|
859 #endif |
|
860 #ifndef PNG_NO_READ_cHRM |
|
861 # define PNG_READ_cHRM_SUPPORTED |
|
862 # define PNG_cHRM_SUPPORTED |
|
863 #endif |
|
864 #ifndef PNG_NO_READ_gAMA |
|
865 # define PNG_READ_gAMA_SUPPORTED |
|
866 # define PNG_gAMA_SUPPORTED |
|
867 #endif |
|
868 #ifndef PNG_NO_READ_hIST |
|
869 # define PNG_READ_hIST_SUPPORTED |
|
870 # define PNG_hIST_SUPPORTED |
|
871 #endif |
|
872 #ifndef PNG_NO_READ_iCCP |
|
873 # define PNG_READ_iCCP_SUPPORTED |
|
874 # define PNG_iCCP_SUPPORTED |
|
875 #endif |
|
876 #ifndef PNG_NO_READ_iTXt |
|
877 # ifndef PNG_READ_iTXt_SUPPORTED |
|
878 # define PNG_READ_iTXt_SUPPORTED |
|
879 # endif |
|
880 # ifndef PNG_iTXt_SUPPORTED |
|
881 # define PNG_iTXt_SUPPORTED |
|
882 # endif |
|
883 #endif |
|
884 #ifndef PNG_NO_READ_oFFs |
|
885 # define PNG_READ_oFFs_SUPPORTED |
|
886 # define PNG_oFFs_SUPPORTED |
|
887 #endif |
|
888 #ifndef PNG_NO_READ_pCAL |
|
889 # define PNG_READ_pCAL_SUPPORTED |
|
890 # define PNG_pCAL_SUPPORTED |
|
891 #endif |
|
892 #ifndef PNG_NO_READ_sCAL |
|
893 # define PNG_READ_sCAL_SUPPORTED |
|
894 # define PNG_sCAL_SUPPORTED |
|
895 #endif |
|
896 #ifndef PNG_NO_READ_pHYs |
|
897 # define PNG_READ_pHYs_SUPPORTED |
|
898 # define PNG_pHYs_SUPPORTED |
|
899 #endif |
|
900 #ifndef PNG_NO_READ_sBIT |
|
901 # define PNG_READ_sBIT_SUPPORTED |
|
902 # define PNG_sBIT_SUPPORTED |
|
903 #endif |
|
904 #ifndef PNG_NO_READ_sPLT |
|
905 # define PNG_READ_sPLT_SUPPORTED |
|
906 # define PNG_sPLT_SUPPORTED |
|
907 #endif |
|
908 #ifndef PNG_NO_READ_sRGB |
|
909 # define PNG_READ_sRGB_SUPPORTED |
|
910 # define PNG_sRGB_SUPPORTED |
|
911 #endif |
|
912 #ifndef PNG_NO_READ_tEXt |
|
913 # define PNG_READ_tEXt_SUPPORTED |
|
914 # define PNG_tEXt_SUPPORTED |
|
915 #endif |
|
916 #ifndef PNG_NO_READ_tIME |
|
917 # define PNG_READ_tIME_SUPPORTED |
|
918 # define PNG_tIME_SUPPORTED |
|
919 #endif |
|
920 #ifndef PNG_NO_READ_tRNS |
|
921 # define PNG_READ_tRNS_SUPPORTED |
|
922 # define PNG_tRNS_SUPPORTED |
|
923 #endif |
|
924 #ifndef PNG_NO_READ_zTXt |
|
925 # define PNG_READ_zTXt_SUPPORTED |
|
926 # define PNG_zTXt_SUPPORTED |
|
927 #endif |
|
928 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS |
|
929 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED |
|
930 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED |
|
931 # define PNG_UNKNOWN_CHUNKS_SUPPORTED |
|
932 # endif |
|
933 # ifndef PNG_NO_HANDLE_AS_UNKNOWN |
|
934 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
|
935 # endif |
|
936 #endif |
|
937 #if !defined(PNG_NO_READ_USER_CHUNKS) && \ |
|
938 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) |
|
939 # define PNG_READ_USER_CHUNKS_SUPPORTED |
|
940 # define PNG_USER_CHUNKS_SUPPORTED |
|
941 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS |
|
942 # undef PNG_NO_READ_UNKNOWN_CHUNKS |
|
943 # endif |
|
944 # ifdef PNG_NO_HANDLE_AS_UNKNOWN |
|
945 # undef PNG_NO_HANDLE_AS_UNKNOWN |
|
946 # endif |
|
947 #endif |
|
948 #ifndef PNG_NO_READ_OPT_PLTE |
|
949 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */ |
|
950 #endif /* optional PLTE chunk in RGB and RGBA images */ |
|
951 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \ |
|
952 defined(PNG_READ_zTXt_SUPPORTED) |
|
953 # define PNG_READ_TEXT_SUPPORTED |
|
954 # define PNG_TEXT_SUPPORTED |
|
955 #endif |
|
956 |
|
957 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ |
|
958 |
|
959 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED |
|
960 |
|
961 #ifdef PNG_NO_WRITE_TEXT |
|
962 # define PNG_NO_WRITE_iTXt |
|
963 # define PNG_NO_WRITE_tEXt |
|
964 # define PNG_NO_WRITE_zTXt |
|
965 #endif |
|
966 #ifndef PNG_NO_WRITE_bKGD |
|
967 # define PNG_WRITE_bKGD_SUPPORTED |
|
968 # ifndef PNG_bKGD_SUPPORTED |
|
969 # define PNG_bKGD_SUPPORTED |
|
970 # endif |
|
971 #endif |
|
972 #ifndef PNG_NO_WRITE_cHRM |
|
973 # define PNG_WRITE_cHRM_SUPPORTED |
|
974 # ifndef PNG_cHRM_SUPPORTED |
|
975 # define PNG_cHRM_SUPPORTED |
|
976 # endif |
|
977 #endif |
|
978 #ifndef PNG_NO_WRITE_gAMA |
|
979 # define PNG_WRITE_gAMA_SUPPORTED |
|
980 # ifndef PNG_gAMA_SUPPORTED |
|
981 # define PNG_gAMA_SUPPORTED |
|
982 # endif |
|
983 #endif |
|
984 #ifndef PNG_NO_WRITE_hIST |
|
985 # define PNG_WRITE_hIST_SUPPORTED |
|
986 # ifndef PNG_hIST_SUPPORTED |
|
987 # define PNG_hIST_SUPPORTED |
|
988 # endif |
|
989 #endif |
|
990 #ifndef PNG_NO_WRITE_iCCP |
|
991 # define PNG_WRITE_iCCP_SUPPORTED |
|
992 # ifndef PNG_iCCP_SUPPORTED |
|
993 # define PNG_iCCP_SUPPORTED |
|
994 # endif |
|
995 #endif |
|
996 #ifndef PNG_NO_WRITE_iTXt |
|
997 # ifndef PNG_WRITE_iTXt_SUPPORTED |
|
998 # define PNG_WRITE_iTXt_SUPPORTED |
|
999 # endif |
|
1000 # ifndef PNG_iTXt_SUPPORTED |
|
1001 # define PNG_iTXt_SUPPORTED |
|
1002 # endif |
|
1003 #endif |
|
1004 #ifndef PNG_NO_WRITE_oFFs |
|
1005 # define PNG_WRITE_oFFs_SUPPORTED |
|
1006 # ifndef PNG_oFFs_SUPPORTED |
|
1007 # define PNG_oFFs_SUPPORTED |
|
1008 # endif |
|
1009 #endif |
|
1010 #ifndef PNG_NO_WRITE_pCAL |
|
1011 # define PNG_WRITE_pCAL_SUPPORTED |
|
1012 # ifndef PNG_pCAL_SUPPORTED |
|
1013 # define PNG_pCAL_SUPPORTED |
|
1014 # endif |
|
1015 #endif |
|
1016 #ifndef PNG_NO_WRITE_sCAL |
|
1017 # define PNG_WRITE_sCAL_SUPPORTED |
|
1018 # ifndef PNG_sCAL_SUPPORTED |
|
1019 # define PNG_sCAL_SUPPORTED |
|
1020 # endif |
|
1021 #endif |
|
1022 #ifndef PNG_NO_WRITE_pHYs |
|
1023 # define PNG_WRITE_pHYs_SUPPORTED |
|
1024 # ifndef PNG_pHYs_SUPPORTED |
|
1025 # define PNG_pHYs_SUPPORTED |
|
1026 # endif |
|
1027 #endif |
|
1028 #ifndef PNG_NO_WRITE_sBIT |
|
1029 # define PNG_WRITE_sBIT_SUPPORTED |
|
1030 # ifndef PNG_sBIT_SUPPORTED |
|
1031 # define PNG_sBIT_SUPPORTED |
|
1032 # endif |
|
1033 #endif |
|
1034 #ifndef PNG_NO_WRITE_sPLT |
|
1035 # define PNG_WRITE_sPLT_SUPPORTED |
|
1036 # ifndef PNG_sPLT_SUPPORTED |
|
1037 # define PNG_sPLT_SUPPORTED |
|
1038 # endif |
|
1039 #endif |
|
1040 #ifndef PNG_NO_WRITE_sRGB |
|
1041 # define PNG_WRITE_sRGB_SUPPORTED |
|
1042 # ifndef PNG_sRGB_SUPPORTED |
|
1043 # define PNG_sRGB_SUPPORTED |
|
1044 # endif |
|
1045 #endif |
|
1046 #ifndef PNG_NO_WRITE_tEXt |
|
1047 # define PNG_WRITE_tEXt_SUPPORTED |
|
1048 # ifndef PNG_tEXt_SUPPORTED |
|
1049 # define PNG_tEXt_SUPPORTED |
|
1050 # endif |
|
1051 #endif |
|
1052 #ifndef PNG_NO_WRITE_tIME |
|
1053 # define PNG_WRITE_tIME_SUPPORTED |
|
1054 # ifndef PNG_tIME_SUPPORTED |
|
1055 # define PNG_tIME_SUPPORTED |
|
1056 # endif |
|
1057 #endif |
|
1058 #ifndef PNG_NO_WRITE_tRNS |
|
1059 # define PNG_WRITE_tRNS_SUPPORTED |
|
1060 # ifndef PNG_tRNS_SUPPORTED |
|
1061 # define PNG_tRNS_SUPPORTED |
|
1062 # endif |
|
1063 #endif |
|
1064 #ifndef PNG_NO_WRITE_zTXt |
|
1065 # define PNG_WRITE_zTXt_SUPPORTED |
|
1066 # ifndef PNG_zTXt_SUPPORTED |
|
1067 # define PNG_zTXt_SUPPORTED |
|
1068 # endif |
|
1069 #endif |
|
1070 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS |
|
1071 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED |
|
1072 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED |
|
1073 # define PNG_UNKNOWN_CHUNKS_SUPPORTED |
|
1074 # endif |
|
1075 # ifndef PNG_NO_HANDLE_AS_UNKNOWN |
|
1076 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
|
1077 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED |
|
1078 # endif |
|
1079 # endif |
|
1080 #endif |
|
1081 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \ |
|
1082 defined(PNG_WRITE_zTXt_SUPPORTED) |
|
1083 # define PNG_WRITE_TEXT_SUPPORTED |
|
1084 # ifndef PNG_TEXT_SUPPORTED |
|
1085 # define PNG_TEXT_SUPPORTED |
|
1086 # endif |
|
1087 #endif |
|
1088 |
|
1089 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ |
|
1090 |
|
1091 /* Turn this off to disable png_read_png() and |
|
1092 * png_write_png() and leave the row_pointers member |
|
1093 * out of the info structure. |
|
1094 */ |
|
1095 #ifndef PNG_NO_INFO_IMAGE |
|
1096 # define PNG_INFO_IMAGE_SUPPORTED |
|
1097 #endif |
|
1098 |
|
1099 /* need the time information for reading tIME chunks */ |
|
1100 #if defined(PNG_tIME_SUPPORTED) |
|
1101 # if !defined(_WIN32_WCE) |
|
1102 /* "time.h" functions are not supported on WindowsCE */ |
|
1103 # include <time.h> |
|
1104 # endif |
|
1105 #endif |
|
1106 |
|
1107 /* Some typedefs to get us started. These should be safe on most of the |
|
1108 * common platforms. The typedefs should be at least as large as the |
|
1109 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they |
|
1110 * don't have to be exactly that size. Some compilers dislike passing |
|
1111 * unsigned shorts as function parameters, so you may be better off using |
|
1112 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may |
|
1113 * want to have unsigned int for png_uint_32 instead of unsigned long. |
|
1114 */ |
|
1115 |
|
1116 typedef unsigned long png_uint_32; |
|
1117 typedef long png_int_32; |
|
1118 typedef unsigned short png_uint_16; |
|
1119 typedef short png_int_16; |
|
1120 typedef unsigned char png_byte; |
|
1121 |
|
1122 /* This is usually size_t. It is typedef'ed just in case you need it to |
|
1123 change (I'm not sure if you will or not, so I thought I'd be safe) */ |
|
1124 #ifdef PNG_SIZE_T |
|
1125 typedef PNG_SIZE_T png_size_t; |
|
1126 # define png_sizeof(x) png_convert_size(sizeof(x)) |
|
1127 #else |
|
1128 typedef size_t png_size_t; |
|
1129 # define png_sizeof(x) sizeof(x) |
|
1130 #endif |
|
1131 |
|
1132 /* The following is needed for medium model support. It cannot be in the |
|
1133 * PNG_INTERNAL section. Needs modification for other compilers besides |
|
1134 * MSC. Model independent support declares all arrays and pointers to be |
|
1135 * large using the far keyword. The zlib version used must also support |
|
1136 * model independent data. As of version zlib 1.0.4, the necessary changes |
|
1137 * have been made in zlib. The USE_FAR_KEYWORD define triggers other |
|
1138 * changes that are needed. (Tim Wegner) |
|
1139 */ |
|
1140 |
|
1141 /* Separate compiler dependencies (problem here is that zlib.h always |
|
1142 defines FAR. (SJT) */ |
|
1143 #ifdef __BORLANDC__ |
|
1144 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) |
|
1145 # define LDATA 1 |
|
1146 # else |
|
1147 # define LDATA 0 |
|
1148 # endif |
|
1149 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */ |
|
1150 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__) |
|
1151 # define PNG_MAX_MALLOC_64K |
|
1152 # if (LDATA != 1) |
|
1153 # ifndef FAR |
|
1154 # define FAR __far |
|
1155 # endif |
|
1156 # define USE_FAR_KEYWORD |
|
1157 # endif /* LDATA != 1 */ |
|
1158 /* Possibly useful for moving data out of default segment. |
|
1159 * Uncomment it if you want. Could also define FARDATA as |
|
1160 * const if your compiler supports it. (SJT) |
|
1161 # define FARDATA FAR |
|
1162 */ |
|
1163 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */ |
|
1164 #endif /* __BORLANDC__ */ |
|
1165 |
|
1166 |
|
1167 /* Suggest testing for specific compiler first before testing for |
|
1168 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, |
|
1169 * making reliance oncertain keywords suspect. (SJT) |
|
1170 */ |
|
1171 |
|
1172 /* MSC Medium model */ |
|
1173 #if defined(FAR) |
|
1174 # if defined(M_I86MM) |
|
1175 # define USE_FAR_KEYWORD |
|
1176 # define FARDATA FAR |
|
1177 # include <dos.h> |
|
1178 # endif |
|
1179 #endif |
|
1180 |
|
1181 /* SJT: default case */ |
|
1182 #ifndef FAR |
|
1183 # define FAR |
|
1184 #endif |
|
1185 |
|
1186 /* At this point FAR is always defined */ |
|
1187 #ifndef FARDATA |
|
1188 # define FARDATA |
|
1189 #endif |
|
1190 |
|
1191 /* Typedef for floating-point numbers that are converted |
|
1192 to fixed-point with a multiple of 100,000, e.g., int_gamma */ |
|
1193 typedef png_int_32 png_fixed_point; |
|
1194 |
|
1195 /* Add typedefs for pointers */ |
|
1196 typedef void FAR * png_voidp; |
|
1197 typedef png_byte FAR * png_bytep; |
|
1198 typedef png_uint_32 FAR * png_uint_32p; |
|
1199 typedef png_int_32 FAR * png_int_32p; |
|
1200 typedef png_uint_16 FAR * png_uint_16p; |
|
1201 typedef png_int_16 FAR * png_int_16p; |
|
1202 typedef PNG_CONST char FAR * png_const_charp; |
|
1203 typedef char FAR * png_charp; |
|
1204 typedef png_fixed_point FAR * png_fixed_point_p; |
|
1205 |
|
1206 #ifndef PNG_NO_STDIO |
|
1207 #if defined(_WIN32_WCE) |
|
1208 typedef HANDLE png_FILE_p; |
|
1209 #else |
|
1210 typedef FILE * png_FILE_p; |
|
1211 #endif |
|
1212 #endif |
|
1213 |
|
1214 #ifdef PNG_FLOATING_POINT_SUPPORTED |
|
1215 typedef double FAR * png_doublep; |
|
1216 #endif |
|
1217 |
|
1218 /* Pointers to pointers; i.e. arrays */ |
|
1219 typedef png_byte FAR * FAR * png_bytepp; |
|
1220 typedef png_uint_32 FAR * FAR * png_uint_32pp; |
|
1221 typedef png_int_32 FAR * FAR * png_int_32pp; |
|
1222 typedef png_uint_16 FAR * FAR * png_uint_16pp; |
|
1223 typedef png_int_16 FAR * FAR * png_int_16pp; |
|
1224 typedef PNG_CONST char FAR * FAR * png_const_charpp; |
|
1225 typedef char FAR * FAR * png_charpp; |
|
1226 typedef png_fixed_point FAR * FAR * png_fixed_point_pp; |
|
1227 #ifdef PNG_FLOATING_POINT_SUPPORTED |
|
1228 typedef double FAR * FAR * png_doublepp; |
|
1229 #endif |
|
1230 |
|
1231 /* Pointers to pointers to pointers; i.e., pointer to array */ |
|
1232 typedef char FAR * FAR * FAR * png_charppp; |
|
1233 |
|
1234 #if defined(PNG_1_0_X) || defined(PNG_1_2_X) |
|
1235 /* SPC - Is this stuff deprecated? */ |
|
1236 /* It'll be removed as of libpng-1.3.0 - GR-P */ |
|
1237 /* libpng typedefs for types in zlib. If zlib changes |
|
1238 * or another compression library is used, then change these. |
|
1239 * Eliminates need to change all the source files. |
|
1240 */ |
|
1241 typedef charf * png_zcharp; |
|
1242 typedef charf * FAR * png_zcharpp; |
|
1243 typedef z_stream FAR * png_zstreamp; |
|
1244 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */ |
|
1245 |
|
1246 /* |
|
1247 * Define PNG_BUILD_DLL if the module being built is a Windows |
|
1248 * LIBPNG DLL. |
|
1249 * |
|
1250 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL. |
|
1251 * It is equivalent to Microsoft predefined macro _DLL that is |
|
1252 * automatically defined when you compile using the share |
|
1253 * version of the CRT (C Run-Time library) |
|
1254 * |
|
1255 * The cygwin mods make this behavior a little different: |
|
1256 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin |
|
1257 * Define PNG_STATIC if you are building a static library for use with cygwin, |
|
1258 * -or- if you are building an application that you want to link to the |
|
1259 * static library. |
|
1260 * PNG_USE_DLL is defined by default (no user action needed) unless one of |
|
1261 * the other flags is defined. |
|
1262 */ |
|
1263 |
|
1264 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL)) |
|
1265 # define PNG_DLL |
|
1266 #endif |
|
1267 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib. |
|
1268 * When building a static lib, default to no GLOBAL ARRAYS, but allow |
|
1269 * command-line override |
|
1270 */ |
|
1271 #if defined(__CYGWIN__) |
|
1272 # if !defined(PNG_STATIC) |
|
1273 # if defined(PNG_USE_GLOBAL_ARRAYS) |
|
1274 # undef PNG_USE_GLOBAL_ARRAYS |
|
1275 # endif |
|
1276 # if !defined(PNG_USE_LOCAL_ARRAYS) |
|
1277 # define PNG_USE_LOCAL_ARRAYS |
|
1278 # endif |
|
1279 # else |
|
1280 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS) |
|
1281 # if defined(PNG_USE_GLOBAL_ARRAYS) |
|
1282 # undef PNG_USE_GLOBAL_ARRAYS |
|
1283 # endif |
|
1284 # endif |
|
1285 # endif |
|
1286 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) |
|
1287 # define PNG_USE_LOCAL_ARRAYS |
|
1288 # endif |
|
1289 #endif |
|
1290 |
|
1291 /* Do not use global arrays (helps with building DLL's) |
|
1292 * They are no longer used in libpng itself, since version 1.0.5c, |
|
1293 * but might be required for some pre-1.0.5c applications. |
|
1294 */ |
|
1295 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS) |
|
1296 # if defined(PNG_NO_GLOBAL_ARRAYS) || \ |
|
1297 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER) |
|
1298 # define PNG_USE_LOCAL_ARRAYS |
|
1299 # else |
|
1300 # define PNG_USE_GLOBAL_ARRAYS |
|
1301 # endif |
|
1302 #endif |
|
1303 |
|
1304 #if defined(__CYGWIN__) |
|
1305 # undef PNGAPI |
|
1306 # define PNGAPI __cdecl |
|
1307 # undef PNG_IMPEXP |
|
1308 # define PNG_IMPEXP |
|
1309 #endif |
|
1310 |
|
1311 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall", |
|
1312 * you may get warnings regarding the linkage of png_zalloc and png_zfree. |
|
1313 * Don't ignore those warnings; you must also reset the default calling |
|
1314 * convention in your compiler to match your PNGAPI, and you must build |
|
1315 * zlib and your applications the same way you build libpng. |
|
1316 */ |
|
1317 |
|
1318 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF) |
|
1319 # ifndef PNG_NO_MODULEDEF |
|
1320 # define PNG_NO_MODULEDEF |
|
1321 # endif |
|
1322 #endif |
|
1323 |
|
1324 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF) |
|
1325 # define PNG_IMPEXP |
|
1326 #endif |
|
1327 |
|
1328 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \ |
|
1329 (( defined(_Windows) || defined(_WINDOWS) || \ |
|
1330 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) )) |
|
1331 |
|
1332 # ifndef PNGAPI |
|
1333 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800)) |
|
1334 # define PNGAPI __cdecl |
|
1335 # else |
|
1336 # define PNGAPI _cdecl |
|
1337 # endif |
|
1338 # endif |
|
1339 |
|
1340 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \ |
|
1341 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */) |
|
1342 # define PNG_IMPEXP |
|
1343 # endif |
|
1344 |
|
1345 # if !defined(PNG_IMPEXP) |
|
1346 |
|
1347 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol |
|
1348 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol |
|
1349 |
|
1350 /* Borland/Microsoft */ |
|
1351 # if defined(_MSC_VER) || defined(__BORLANDC__) |
|
1352 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500) |
|
1353 # define PNG_EXPORT PNG_EXPORT_TYPE1 |
|
1354 # else |
|
1355 # define PNG_EXPORT PNG_EXPORT_TYPE2 |
|
1356 # if defined(PNG_BUILD_DLL) |
|
1357 # define PNG_IMPEXP __export |
|
1358 # else |
|
1359 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in |
|
1360 VC++ */ |
|
1361 # endif /* Exists in Borland C++ for |
|
1362 C++ classes (== huge) */ |
|
1363 # endif |
|
1364 # endif |
|
1365 |
|
1366 # if !defined(PNG_IMPEXP) |
|
1367 # if defined(PNG_BUILD_DLL) |
|
1368 # define PNG_IMPEXP __declspec(dllexport) |
|
1369 # else |
|
1370 # define PNG_IMPEXP __declspec(dllimport) |
|
1371 # endif |
|
1372 # endif |
|
1373 # endif /* PNG_IMPEXP */ |
|
1374 #else /* !(DLL || non-cygwin WINDOWS) */ |
|
1375 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__) |
|
1376 # ifndef PNGAPI |
|
1377 # define PNGAPI _System |
|
1378 # endif |
|
1379 # else |
|
1380 # if 0 /* ... other platforms, with other meanings */ |
|
1381 # endif |
|
1382 # endif |
|
1383 #endif |
|
1384 |
|
1385 #ifndef PNGAPI |
|
1386 # define PNGAPI |
|
1387 #endif |
|
1388 #ifndef PNG_IMPEXP |
|
1389 # define PNG_IMPEXP |
|
1390 #endif |
|
1391 |
|
1392 #ifdef PNG_BUILDSYMS |
|
1393 # ifndef PNG_EXPORT |
|
1394 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END |
|
1395 # endif |
|
1396 # ifdef PNG_USE_GLOBAL_ARRAYS |
|
1397 # ifndef PNG_EXPORT_VAR |
|
1398 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT |
|
1399 # endif |
|
1400 # endif |
|
1401 #endif |
|
1402 |
|
1403 #ifndef PNG_EXPORT |
|
1404 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol |
|
1405 #endif |
|
1406 |
|
1407 #ifdef PNG_USE_GLOBAL_ARRAYS |
|
1408 # ifndef PNG_EXPORT_VAR |
|
1409 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type |
|
1410 # endif |
|
1411 #endif |
|
1412 |
|
1413 /* User may want to use these so they are not in PNG_INTERNAL. Any library |
|
1414 * functions that are passed far data must be model independent. |
|
1415 */ |
|
1416 |
|
1417 #ifndef PNG_ABORT |
|
1418 # define PNG_ABORT() abort() |
|
1419 #endif |
|
1420 |
|
1421 #ifdef PNG_SETJMP_SUPPORTED |
|
1422 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf) |
|
1423 #else |
|
1424 # define png_jmpbuf(png_ptr) \ |
|
1425 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED) |
|
1426 #endif |
|
1427 |
|
1428 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */ |
|
1429 /* use this to make far-to-near assignments */ |
|
1430 # define CHECK 1 |
|
1431 # define NOCHECK 0 |
|
1432 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) |
|
1433 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) |
|
1434 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */ |
|
1435 # define png_strlen _fstrlen |
|
1436 # define png_memcmp _fmemcmp /* SJT: added */ |
|
1437 # define png_memcpy _fmemcpy |
|
1438 # define png_memset _fmemset |
|
1439 #else /* use the usual functions */ |
|
1440 # define CVT_PTR(ptr) (ptr) |
|
1441 # define CVT_PTR_NOCHECK(ptr) (ptr) |
|
1442 # ifndef PNG_NO_SNPRINTF |
|
1443 # ifdef _MSC_VER |
|
1444 # define png_snprintf _snprintf /* Added to v 1.2.19 */ |
|
1445 # define png_snprintf2 _snprintf |
|
1446 # define png_snprintf6 _snprintf |
|
1447 # else |
|
1448 # define png_snprintf snprintf /* Added to v 1.2.19 */ |
|
1449 # define png_snprintf2 snprintf |
|
1450 # define png_snprintf6 snprintf |
|
1451 # endif |
|
1452 # else |
|
1453 /* You don't have or don't want to use snprintf(). Caution: Using |
|
1454 * sprintf instead of snprintf exposes your application to accidental |
|
1455 * or malevolent buffer overflows. If you don't have snprintf() |
|
1456 * as a general rule you should provide one (you can get one from |
|
1457 * Portable OpenSSH). */ |
|
1458 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1) |
|
1459 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2) |
|
1460 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \ |
|
1461 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6) |
|
1462 # endif |
|
1463 # define png_strlen strlen |
|
1464 # define png_memcmp memcmp /* SJT: added */ |
|
1465 # define png_memcpy memcpy |
|
1466 # define png_memset memset |
|
1467 #endif |
|
1468 /* End of memory model independent support */ |
|
1469 |
|
1470 /* Just a little check that someone hasn't tried to define something |
|
1471 * contradictory. |
|
1472 */ |
|
1473 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) |
|
1474 # undef PNG_ZBUF_SIZE |
|
1475 # define PNG_ZBUF_SIZE 65536L |
|
1476 #endif |
|
1477 |
|
1478 /* Added at libpng-1.2.8 */ |
|
1479 #endif /* PNG_VERSION_INFO_ONLY */ |
|
1480 |
|
1481 #endif /* PNGCONF_H */ |