2 /* pngconf.h - machine configurable file for libpng
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4 * libpng version 1.2.33 - October 31, 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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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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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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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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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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41 * Added at libpng-1.2.8
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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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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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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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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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72 #endif /* __STDC__ */
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74 #ifndef PNG_VERSION_INFO_ONLY
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76 /* End of material added to libpng-1.2.8 */
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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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84 /* End of material added at libpng-1.2.19/1.2.21 */
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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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99 #ifndef PNG_ZBUF_SIZE
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100 # define PNG_ZBUF_SIZE 8192
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103 /* Enable if you want a write-only libpng */
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105 #ifndef PNG_NO_READ_SUPPORTED
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106 # define PNG_READ_SUPPORTED
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109 /* Enable if you want a read-only libpng */
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111 #ifndef PNG_NO_WRITE_SUPPORTED
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112 # define PNG_WRITE_SUPPORTED
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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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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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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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137 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
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138 # define PNG_MAX_MALLOC_64K
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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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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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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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164 * (nothing) == PNG_USE_DLL
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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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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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179 # if defined(PNG_USE_DLL)
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180 # undef PNG_USE_DLL
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182 # if defined(PNG_DLL)
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185 # if !defined(PNG_STATIC)
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186 # define PNG_STATIC
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189 # if defined (PNG_BUILD_DLL)
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190 # if defined(PNG_STATIC)
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193 # if defined(PNG_USE_DLL)
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194 # undef PNG_USE_DLL
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196 # if !defined(PNG_DLL)
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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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204 # if defined(PNG_DLL)
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208 # if !defined(PNG_USE_DLL)
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209 # define PNG_USE_DLL
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211 # if !defined(PNG_DLL)
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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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228 * #define PNG_NO_CONSOLE_IO
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229 * #define PNG_NO_STDIO
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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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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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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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254 # if (PNG_DEBUG > 0)
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255 # include <stdio.h>
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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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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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274 #ifdef OF /* zlib prototype munger */
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275 # define PNGARG(arglist) OF(arglist)
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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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284 # define PNGARG(arglist) arglist
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285 #endif /* _NO_PROTO */
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290 #endif /* PNGARG */
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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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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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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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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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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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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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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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326 __pngconf.h__ already includes setjmp.h;
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327 __dont__ include it again.;
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329 # endif /* __linux__ */
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331 /* include setjmp.h for error handling */
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332 # include <setjmp.h>
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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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339 # undef PNG_SAVE_BSD_SOURCE
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341 # endif /* __linux__ */
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342 #endif /* PNG_SETJMP_SUPPORTED */
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345 # include <strings.h>
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347 # include <string.h>
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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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353 #include <stdlib.h>
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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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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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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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374 # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
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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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384 # include <m68881.h>
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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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393 /* This provides the non-ANSI (far) memory allocation routines. */
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394 #if defined(__TURBOC__) && defined(__MSDOS__)
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396 # include <alloc.h>
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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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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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409 #ifndef PNG_DITHER_RED_BITS
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410 # define PNG_DITHER_RED_BITS 5
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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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415 #ifndef PNG_DITHER_BLUE_BITS
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416 # define PNG_DITHER_BLUE_BITS 5
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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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426 #ifndef PNG_MAX_GAMMA_8
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427 # define PNG_MAX_GAMMA_8 11
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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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433 #ifndef PNG_GAMMA_THRESHOLD
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434 # define PNG_GAMMA_THRESHOLD 0.05
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437 #endif /* PNG_INTERNAL */
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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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444 #ifndef PNG_NO_CONST
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445 # define PNG_CONST const
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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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464 /* Any features you will not be using can be undef'ed here */
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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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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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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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487 # ifndef PNG_NO_READ_iTXt
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488 # define PNG_NO_READ_iTXt
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490 # ifndef PNG_NO_WRITE_iTXt
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491 # define PNG_NO_WRITE_iTXt
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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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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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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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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
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518 # define PNG_NO_WRITE_iTXt
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519 # define PNG_NO_READ_sCAL
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520 # define PNG_NO_WRITE_sCAL
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521 # define PNG_NO_READ_sPLT
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522 # define PNG_NO_WRITE_sPLT
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523 # define PNG_NO_INFO_IMAGE
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524 # define PNG_NO_READ_RGB_TO_GRAY
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525 # define PNG_NO_READ_USER_TRANSFORM
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526 # define PNG_NO_WRITE_USER_TRANSFORM
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527 # define PNG_NO_USER_MEM
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528 # define PNG_NO_READ_EMPTY_PLTE
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529 # define PNG_NO_MNG_FEATURES
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530 # define PNG_NO_FIXED_POINT_SUPPORTED
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533 /* Ignore attempt to turn off both floating and fixed point support */
\r
534 #if !defined(PNG_FLOATING_POINT_SUPPORTED) || \
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535 !defined(PNG_NO_FIXED_POINT_SUPPORTED)
\r
536 # define PNG_FIXED_POINT_SUPPORTED
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539 #ifndef PNG_NO_FREE_ME
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540 # define PNG_FREE_ME_SUPPORTED
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543 #if defined(PNG_READ_SUPPORTED)
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545 #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \
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546 !defined(PNG_NO_READ_TRANSFORMS)
\r
547 # define PNG_READ_TRANSFORMS_SUPPORTED
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550 #ifdef PNG_READ_TRANSFORMS_SUPPORTED
\r
551 # ifndef PNG_NO_READ_EXPAND
\r
552 # define PNG_READ_EXPAND_SUPPORTED
\r
554 # ifndef PNG_NO_READ_SHIFT
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555 # define PNG_READ_SHIFT_SUPPORTED
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557 # ifndef PNG_NO_READ_PACK
\r
558 # define PNG_READ_PACK_SUPPORTED
\r
560 # ifndef PNG_NO_READ_BGR
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561 # define PNG_READ_BGR_SUPPORTED
\r
563 # ifndef PNG_NO_READ_SWAP
\r
564 # define PNG_READ_SWAP_SUPPORTED
\r
566 # ifndef PNG_NO_READ_PACKSWAP
\r
567 # define PNG_READ_PACKSWAP_SUPPORTED
\r
569 # ifndef PNG_NO_READ_INVERT
\r
570 # define PNG_READ_INVERT_SUPPORTED
\r
572 # ifndef PNG_NO_READ_DITHER
\r
573 # define PNG_READ_DITHER_SUPPORTED
\r
575 # ifndef PNG_NO_READ_BACKGROUND
\r
576 # define PNG_READ_BACKGROUND_SUPPORTED
\r
578 # ifndef PNG_NO_READ_16_TO_8
\r
579 # define PNG_READ_16_TO_8_SUPPORTED
\r
581 # ifndef PNG_NO_READ_FILLER
\r
582 # define PNG_READ_FILLER_SUPPORTED
\r
584 # ifndef PNG_NO_READ_GAMMA
\r
585 # define PNG_READ_GAMMA_SUPPORTED
\r
587 # ifndef PNG_NO_READ_GRAY_TO_RGB
\r
588 # define PNG_READ_GRAY_TO_RGB_SUPPORTED
\r
590 # ifndef PNG_NO_READ_SWAP_ALPHA
\r
591 # define PNG_READ_SWAP_ALPHA_SUPPORTED
\r
593 # ifndef PNG_NO_READ_INVERT_ALPHA
\r
594 # define PNG_READ_INVERT_ALPHA_SUPPORTED
\r
596 # ifndef PNG_NO_READ_STRIP_ALPHA
\r
597 # define PNG_READ_STRIP_ALPHA_SUPPORTED
\r
599 # ifndef PNG_NO_READ_USER_TRANSFORM
\r
600 # define PNG_READ_USER_TRANSFORM_SUPPORTED
\r
602 # ifndef PNG_NO_READ_RGB_TO_GRAY
\r
603 # define PNG_READ_RGB_TO_GRAY_SUPPORTED
\r
605 #endif /* PNG_READ_TRANSFORMS_SUPPORTED */
\r
607 #if !defined(PNG_NO_PROGRESSIVE_READ) && \
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608 !defined(PNG_PROGRESSIVE_READ_SUPPORTED) /* if you don't do progressive */
\r
609 # define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */
\r
610 #endif /* about interlacing capability! You'll */
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611 /* still have interlacing unless you change the following line: */
\r
613 #define PNG_READ_INTERLACING_SUPPORTED /* required in PNG-compliant decoders */
\r
615 #ifndef PNG_NO_READ_COMPOSITE_NODIV
\r
616 # ifndef PNG_NO_READ_COMPOSITED_NODIV /* libpng-1.0.x misspelling */
\r
617 # define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel, SGI */
\r
621 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
\r
622 /* Deprecated, will be removed from version 2.0.0.
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623 Use PNG_MNG_FEATURES_SUPPORTED instead. */
\r
624 #ifndef PNG_NO_READ_EMPTY_PLTE
\r
625 # define PNG_READ_EMPTY_PLTE_SUPPORTED
\r
629 #endif /* PNG_READ_SUPPORTED */
\r
631 #if defined(PNG_WRITE_SUPPORTED)
\r
633 # if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \
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634 !defined(PNG_NO_WRITE_TRANSFORMS)
\r
635 # define PNG_WRITE_TRANSFORMS_SUPPORTED
\r
638 #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
\r
639 # ifndef PNG_NO_WRITE_SHIFT
\r
640 # define PNG_WRITE_SHIFT_SUPPORTED
\r
642 # ifndef PNG_NO_WRITE_PACK
\r
643 # define PNG_WRITE_PACK_SUPPORTED
\r
645 # ifndef PNG_NO_WRITE_BGR
\r
646 # define PNG_WRITE_BGR_SUPPORTED
\r
648 # ifndef PNG_NO_WRITE_SWAP
\r
649 # define PNG_WRITE_SWAP_SUPPORTED
\r
651 # ifndef PNG_NO_WRITE_PACKSWAP
\r
652 # define PNG_WRITE_PACKSWAP_SUPPORTED
\r
654 # ifndef PNG_NO_WRITE_INVERT
\r
655 # define PNG_WRITE_INVERT_SUPPORTED
\r
657 # ifndef PNG_NO_WRITE_FILLER
\r
658 # define PNG_WRITE_FILLER_SUPPORTED /* same as WRITE_STRIP_ALPHA */
\r
660 # ifndef PNG_NO_WRITE_SWAP_ALPHA
\r
661 # define PNG_WRITE_SWAP_ALPHA_SUPPORTED
\r
663 # ifndef PNG_NO_WRITE_INVERT_ALPHA
\r
664 # define PNG_WRITE_INVERT_ALPHA_SUPPORTED
\r
666 # ifndef PNG_NO_WRITE_USER_TRANSFORM
\r
667 # define PNG_WRITE_USER_TRANSFORM_SUPPORTED
\r
669 #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
\r
671 #if !defined(PNG_NO_WRITE_INTERLACING_SUPPORTED) && \
\r
672 !defined(PNG_WRITE_INTERLACING_SUPPORTED)
\r
673 #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant
\r
674 encoders, but can cause trouble
\r
675 if left undefined */
\r
678 #if !defined(PNG_NO_WRITE_WEIGHTED_FILTER) && \
\r
679 !defined(PNG_WRITE_WEIGHTED_FILTER) && \
\r
680 defined(PNG_FLOATING_POINT_SUPPORTED)
\r
681 # define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
\r
684 #ifndef PNG_NO_WRITE_FLUSH
\r
685 # define PNG_WRITE_FLUSH_SUPPORTED
\r
688 #if defined(PNG_1_0_X) || defined (PNG_1_2_X)
\r
689 /* Deprecated, see PNG_MNG_FEATURES_SUPPORTED, above */
\r
690 #ifndef PNG_NO_WRITE_EMPTY_PLTE
\r
691 # define PNG_WRITE_EMPTY_PLTE_SUPPORTED
\r
695 #endif /* PNG_WRITE_SUPPORTED */
\r
698 # ifndef PNG_NO_ERROR_NUMBERS
\r
699 # define PNG_ERROR_NUMBERS_SUPPORTED
\r
701 #endif /* PNG_1_0_X */
\r
703 #if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
\r
704 defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
\r
705 # ifndef PNG_NO_USER_TRANSFORM_PTR
\r
706 # define PNG_USER_TRANSFORM_PTR_SUPPORTED
\r
710 #ifndef PNG_NO_STDIO
\r
711 # define PNG_TIME_RFC1123_SUPPORTED
\r
714 /* This adds extra functions in pngget.c for accessing data from the
\r
715 * info pointer (added in version 0.99)
\r
716 * png_get_image_width()
\r
717 * png_get_image_height()
\r
718 * png_get_bit_depth()
\r
719 * png_get_color_type()
\r
720 * png_get_compression_type()
\r
721 * png_get_filter_type()
\r
722 * png_get_interlace_type()
\r
723 * png_get_pixel_aspect_ratio()
\r
724 * png_get_pixels_per_meter()
\r
725 * png_get_x_offset_pixels()
\r
726 * png_get_y_offset_pixels()
\r
727 * png_get_x_offset_microns()
\r
728 * png_get_y_offset_microns()
\r
730 #if !defined(PNG_NO_EASY_ACCESS) && !defined(PNG_EASY_ACCESS_SUPPORTED)
\r
731 # define PNG_EASY_ACCESS_SUPPORTED
\r
734 /* PNG_ASSEMBLER_CODE was enabled by default in version 1.2.0
\r
735 * and removed from version 1.2.20. The following will be removed
\r
736 * from libpng-1.4.0
\r
739 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_OPTIMIZED_CODE)
\r
740 # ifndef PNG_OPTIMIZED_CODE_SUPPORTED
\r
741 # define PNG_OPTIMIZED_CODE_SUPPORTED
\r
745 #if defined(PNG_READ_SUPPORTED) && !defined(PNG_NO_ASSEMBLER_CODE)
\r
746 # ifndef PNG_ASSEMBLER_CODE_SUPPORTED
\r
747 # define PNG_ASSEMBLER_CODE_SUPPORTED
\r
750 # if defined(__GNUC__) && defined(__x86_64__) && (__GNUC__ < 4)
\r
751 /* work around 64-bit gcc compiler bugs in gcc-3.x */
\r
752 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
\r
753 # define PNG_NO_MMX_CODE
\r
757 # if defined(__APPLE__)
\r
758 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
\r
759 # define PNG_NO_MMX_CODE
\r
763 # if (defined(__MWERKS__) && ((__MWERKS__ < 0x0900) || macintosh))
\r
764 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
\r
765 # define PNG_NO_MMX_CODE
\r
769 # if !defined(PNG_MMX_CODE_SUPPORTED) && !defined(PNG_NO_MMX_CODE)
\r
770 # define PNG_MMX_CODE_SUPPORTED
\r
774 /* end of obsolete code to be removed from libpng-1.4.0 */
\r
776 #if !defined(PNG_1_0_X)
\r
777 #if !defined(PNG_NO_USER_MEM) && !defined(PNG_USER_MEM_SUPPORTED)
\r
778 # define PNG_USER_MEM_SUPPORTED
\r
780 #endif /* PNG_1_0_X */
\r
782 /* Added at libpng-1.2.6 */
\r
783 #if !defined(PNG_1_0_X)
\r
784 #ifndef PNG_SET_USER_LIMITS_SUPPORTED
\r
785 #if !defined(PNG_NO_SET_USER_LIMITS) && !defined(PNG_SET_USER_LIMITS_SUPPORTED)
\r
786 # define PNG_SET_USER_LIMITS_SUPPORTED
\r
789 #endif /* PNG_1_0_X */
\r
791 /* Added at libpng-1.0.16 and 1.2.6. To accept all valid PNGS no matter
\r
792 * how large, set these limits to 0x7fffffffL
\r
794 #ifndef PNG_USER_WIDTH_MAX
\r
795 # define PNG_USER_WIDTH_MAX 1000000L
\r
797 #ifndef PNG_USER_HEIGHT_MAX
\r
798 # define PNG_USER_HEIGHT_MAX 1000000L
\r
801 /* These are currently experimental features, define them if you want */
\r
803 /* very little testing */
\r
805 #ifdef PNG_READ_SUPPORTED
\r
806 # ifndef PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
\r
807 # define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
\r
812 /* This is only for PowerPC big-endian and 680x0 systems */
\r
815 #ifndef PNG_READ_BIG_ENDIAN_SUPPORTED
\r
816 # define PNG_READ_BIG_ENDIAN_SUPPORTED
\r
820 /* Buggy compilers (e.g., gcc 2.7.2.2) need this */
\r
822 #define PNG_NO_POINTER_INDEXING
\r
825 /* These functions are turned off by default, as they will be phased out. */
\r
827 #define PNG_USELESS_TESTS_SUPPORTED
\r
828 #define PNG_CORRECT_PALETTE_SUPPORTED
\r
831 /* Any chunks you are not interested in, you can undef here. The
\r
832 * ones that allocate memory may be expecially important (hIST,
\r
833 * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
\r
837 #if defined(PNG_READ_SUPPORTED) && \
\r
838 !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
\r
839 !defined(PNG_NO_READ_ANCILLARY_CHUNKS)
\r
840 # define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
\r
843 #if defined(PNG_WRITE_SUPPORTED) && \
\r
844 !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \
\r
845 !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS)
\r
846 # define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
\r
849 #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
\r
851 #ifdef PNG_NO_READ_TEXT
\r
852 # define PNG_NO_READ_iTXt
\r
853 # define PNG_NO_READ_tEXt
\r
854 # define PNG_NO_READ_zTXt
\r
856 #ifndef PNG_NO_READ_bKGD
\r
857 # define PNG_READ_bKGD_SUPPORTED
\r
858 # define PNG_bKGD_SUPPORTED
\r
860 #ifndef PNG_NO_READ_cHRM
\r
861 # define PNG_READ_cHRM_SUPPORTED
\r
862 # define PNG_cHRM_SUPPORTED
\r
864 #ifndef PNG_NO_READ_gAMA
\r
865 # define PNG_READ_gAMA_SUPPORTED
\r
866 # define PNG_gAMA_SUPPORTED
\r
868 #ifndef PNG_NO_READ_hIST
\r
869 # define PNG_READ_hIST_SUPPORTED
\r
870 # define PNG_hIST_SUPPORTED
\r
872 #ifndef PNG_NO_READ_iCCP
\r
873 # define PNG_READ_iCCP_SUPPORTED
\r
874 # define PNG_iCCP_SUPPORTED
\r
876 #ifndef PNG_NO_READ_iTXt
\r
877 # ifndef PNG_READ_iTXt_SUPPORTED
\r
878 # define PNG_READ_iTXt_SUPPORTED
\r
880 # ifndef PNG_iTXt_SUPPORTED
\r
881 # define PNG_iTXt_SUPPORTED
\r
884 #ifndef PNG_NO_READ_oFFs
\r
885 # define PNG_READ_oFFs_SUPPORTED
\r
886 # define PNG_oFFs_SUPPORTED
\r
888 #ifndef PNG_NO_READ_pCAL
\r
889 # define PNG_READ_pCAL_SUPPORTED
\r
890 # define PNG_pCAL_SUPPORTED
\r
892 #ifndef PNG_NO_READ_sCAL
\r
893 # define PNG_READ_sCAL_SUPPORTED
\r
894 # define PNG_sCAL_SUPPORTED
\r
896 #ifndef PNG_NO_READ_pHYs
\r
897 # define PNG_READ_pHYs_SUPPORTED
\r
898 # define PNG_pHYs_SUPPORTED
\r
900 #ifndef PNG_NO_READ_sBIT
\r
901 # define PNG_READ_sBIT_SUPPORTED
\r
902 # define PNG_sBIT_SUPPORTED
\r
904 #ifndef PNG_NO_READ_sPLT
\r
905 # define PNG_READ_sPLT_SUPPORTED
\r
906 # define PNG_sPLT_SUPPORTED
\r
908 #ifndef PNG_NO_READ_sRGB
\r
909 # define PNG_READ_sRGB_SUPPORTED
\r
910 # define PNG_sRGB_SUPPORTED
\r
912 #ifndef PNG_NO_READ_tEXt
\r
913 # define PNG_READ_tEXt_SUPPORTED
\r
914 # define PNG_tEXt_SUPPORTED
\r
916 #ifndef PNG_NO_READ_tIME
\r
917 # define PNG_READ_tIME_SUPPORTED
\r
918 # define PNG_tIME_SUPPORTED
\r
920 #ifndef PNG_NO_READ_tRNS
\r
921 # define PNG_READ_tRNS_SUPPORTED
\r
922 # define PNG_tRNS_SUPPORTED
\r
924 #ifndef PNG_NO_READ_zTXt
\r
925 # define PNG_READ_zTXt_SUPPORTED
\r
926 # define PNG_zTXt_SUPPORTED
\r
928 #ifndef PNG_NO_READ_UNKNOWN_CHUNKS
\r
929 # define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
\r
930 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
\r
931 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
\r
933 # ifndef PNG_NO_HANDLE_AS_UNKNOWN
\r
934 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
\r
937 #if !defined(PNG_NO_READ_USER_CHUNKS) && \
\r
938 defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
\r
939 # define PNG_READ_USER_CHUNKS_SUPPORTED
\r
940 # define PNG_USER_CHUNKS_SUPPORTED
\r
941 # ifdef PNG_NO_READ_UNKNOWN_CHUNKS
\r
942 # undef PNG_NO_READ_UNKNOWN_CHUNKS
\r
944 # ifdef PNG_NO_HANDLE_AS_UNKNOWN
\r
945 # undef PNG_NO_HANDLE_AS_UNKNOWN
\r
948 #ifndef PNG_NO_READ_OPT_PLTE
\r
949 # define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the */
\r
950 #endif /* optional PLTE chunk in RGB and RGBA images */
\r
951 #if defined(PNG_READ_iTXt_SUPPORTED) || defined(PNG_READ_tEXt_SUPPORTED) || \
\r
952 defined(PNG_READ_zTXt_SUPPORTED)
\r
953 # define PNG_READ_TEXT_SUPPORTED
\r
954 # define PNG_TEXT_SUPPORTED
\r
957 #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */
\r
959 #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
\r
961 #ifdef PNG_NO_WRITE_TEXT
\r
962 # define PNG_NO_WRITE_iTXt
\r
963 # define PNG_NO_WRITE_tEXt
\r
964 # define PNG_NO_WRITE_zTXt
\r
966 #ifndef PNG_NO_WRITE_bKGD
\r
967 # define PNG_WRITE_bKGD_SUPPORTED
\r
968 # ifndef PNG_bKGD_SUPPORTED
\r
969 # define PNG_bKGD_SUPPORTED
\r
972 #ifndef PNG_NO_WRITE_cHRM
\r
973 # define PNG_WRITE_cHRM_SUPPORTED
\r
974 # ifndef PNG_cHRM_SUPPORTED
\r
975 # define PNG_cHRM_SUPPORTED
\r
978 #ifndef PNG_NO_WRITE_gAMA
\r
979 # define PNG_WRITE_gAMA_SUPPORTED
\r
980 # ifndef PNG_gAMA_SUPPORTED
\r
981 # define PNG_gAMA_SUPPORTED
\r
984 #ifndef PNG_NO_WRITE_hIST
\r
985 # define PNG_WRITE_hIST_SUPPORTED
\r
986 # ifndef PNG_hIST_SUPPORTED
\r
987 # define PNG_hIST_SUPPORTED
\r
990 #ifndef PNG_NO_WRITE_iCCP
\r
991 # define PNG_WRITE_iCCP_SUPPORTED
\r
992 # ifndef PNG_iCCP_SUPPORTED
\r
993 # define PNG_iCCP_SUPPORTED
\r
996 #ifndef PNG_NO_WRITE_iTXt
\r
997 # ifndef PNG_WRITE_iTXt_SUPPORTED
\r
998 # define PNG_WRITE_iTXt_SUPPORTED
\r
1000 # ifndef PNG_iTXt_SUPPORTED
\r
1001 # define PNG_iTXt_SUPPORTED
\r
1004 #ifndef PNG_NO_WRITE_oFFs
\r
1005 # define PNG_WRITE_oFFs_SUPPORTED
\r
1006 # ifndef PNG_oFFs_SUPPORTED
\r
1007 # define PNG_oFFs_SUPPORTED
\r
1010 #ifndef PNG_NO_WRITE_pCAL
\r
1011 # define PNG_WRITE_pCAL_SUPPORTED
\r
1012 # ifndef PNG_pCAL_SUPPORTED
\r
1013 # define PNG_pCAL_SUPPORTED
\r
1016 #ifndef PNG_NO_WRITE_sCAL
\r
1017 # define PNG_WRITE_sCAL_SUPPORTED
\r
1018 # ifndef PNG_sCAL_SUPPORTED
\r
1019 # define PNG_sCAL_SUPPORTED
\r
1022 #ifndef PNG_NO_WRITE_pHYs
\r
1023 # define PNG_WRITE_pHYs_SUPPORTED
\r
1024 # ifndef PNG_pHYs_SUPPORTED
\r
1025 # define PNG_pHYs_SUPPORTED
\r
1028 #ifndef PNG_NO_WRITE_sBIT
\r
1029 # define PNG_WRITE_sBIT_SUPPORTED
\r
1030 # ifndef PNG_sBIT_SUPPORTED
\r
1031 # define PNG_sBIT_SUPPORTED
\r
1034 #ifndef PNG_NO_WRITE_sPLT
\r
1035 # define PNG_WRITE_sPLT_SUPPORTED
\r
1036 # ifndef PNG_sPLT_SUPPORTED
\r
1037 # define PNG_sPLT_SUPPORTED
\r
1040 #ifndef PNG_NO_WRITE_sRGB
\r
1041 # define PNG_WRITE_sRGB_SUPPORTED
\r
1042 # ifndef PNG_sRGB_SUPPORTED
\r
1043 # define PNG_sRGB_SUPPORTED
\r
1046 #ifndef PNG_NO_WRITE_tEXt
\r
1047 # define PNG_WRITE_tEXt_SUPPORTED
\r
1048 # ifndef PNG_tEXt_SUPPORTED
\r
1049 # define PNG_tEXt_SUPPORTED
\r
1052 #ifndef PNG_NO_WRITE_tIME
\r
1053 # define PNG_WRITE_tIME_SUPPORTED
\r
1054 # ifndef PNG_tIME_SUPPORTED
\r
1055 # define PNG_tIME_SUPPORTED
\r
1058 #ifndef PNG_NO_WRITE_tRNS
\r
1059 # define PNG_WRITE_tRNS_SUPPORTED
\r
1060 # ifndef PNG_tRNS_SUPPORTED
\r
1061 # define PNG_tRNS_SUPPORTED
\r
1064 #ifndef PNG_NO_WRITE_zTXt
\r
1065 # define PNG_WRITE_zTXt_SUPPORTED
\r
1066 # ifndef PNG_zTXt_SUPPORTED
\r
1067 # define PNG_zTXt_SUPPORTED
\r
1070 #ifndef PNG_NO_WRITE_UNKNOWN_CHUNKS
\r
1071 # define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
\r
1072 # ifndef PNG_UNKNOWN_CHUNKS_SUPPORTED
\r
1073 # define PNG_UNKNOWN_CHUNKS_SUPPORTED
\r
1075 # ifndef PNG_NO_HANDLE_AS_UNKNOWN
\r
1076 # ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
\r
1077 # define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
\r
1081 #if defined(PNG_WRITE_iTXt_SUPPORTED) || defined(PNG_WRITE_tEXt_SUPPORTED) || \
\r
1082 defined(PNG_WRITE_zTXt_SUPPORTED)
\r
1083 # define PNG_WRITE_TEXT_SUPPORTED
\r
1084 # ifndef PNG_TEXT_SUPPORTED
\r
1085 # define PNG_TEXT_SUPPORTED
\r
1089 #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */
\r
1091 /* Turn this off to disable png_read_png() and
\r
1092 * png_write_png() and leave the row_pointers member
\r
1093 * out of the info structure.
\r
1095 #ifndef PNG_NO_INFO_IMAGE
\r
1096 # define PNG_INFO_IMAGE_SUPPORTED
\r
1099 /* need the time information for reading tIME chunks */
\r
1100 #if defined(PNG_tIME_SUPPORTED)
\r
1101 # if !defined(_WIN32_WCE)
\r
1102 /* "time.h" functions are not supported on WindowsCE */
\r
1103 # include <time.h>
\r
1107 /* Some typedefs to get us started. These should be safe on most of the
\r
1108 * common platforms. The typedefs should be at least as large as the
\r
1109 * numbers suggest (a png_uint_32 must be at least 32 bits long), but they
\r
1110 * don't have to be exactly that size. Some compilers dislike passing
\r
1111 * unsigned shorts as function parameters, so you may be better off using
\r
1112 * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may
\r
1113 * want to have unsigned int for png_uint_32 instead of unsigned long.
\r
1116 typedef unsigned long png_uint_32;
\r
1117 typedef long png_int_32;
\r
1118 typedef unsigned short png_uint_16;
\r
1119 typedef short png_int_16;
\r
1120 typedef unsigned char png_byte;
\r
1122 /* This is usually size_t. It is typedef'ed just in case you need it to
\r
1123 change (I'm not sure if you will or not, so I thought I'd be safe) */
\r
1125 typedef PNG_SIZE_T png_size_t;
\r
1126 # define png_sizeof(x) png_convert_size(sizeof(x))
\r
1128 typedef size_t png_size_t;
\r
1129 # define png_sizeof(x) sizeof(x)
\r
1132 /* The following is needed for medium model support. It cannot be in the
\r
1133 * PNG_INTERNAL section. Needs modification for other compilers besides
\r
1134 * MSC. Model independent support declares all arrays and pointers to be
\r
1135 * large using the far keyword. The zlib version used must also support
\r
1136 * model independent data. As of version zlib 1.0.4, the necessary changes
\r
1137 * have been made in zlib. The USE_FAR_KEYWORD define triggers other
\r
1138 * changes that are needed. (Tim Wegner)
\r
1141 /* Separate compiler dependencies (problem here is that zlib.h always
\r
1142 defines FAR. (SJT) */
\r
1143 #ifdef __BORLANDC__
\r
1144 # if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__)
\r
1149 /* GRR: why is Cygwin in here? Cygwin is not Borland C... */
\r
1150 # if !defined(__WIN32__) && !defined(__FLAT__) && !defined(__CYGWIN__)
\r
1151 # define PNG_MAX_MALLOC_64K
\r
1154 # define FAR __far
\r
1156 # define USE_FAR_KEYWORD
\r
1157 # endif /* LDATA != 1 */
\r
1158 /* Possibly useful for moving data out of default segment.
\r
1159 * Uncomment it if you want. Could also define FARDATA as
\r
1160 * const if your compiler supports it. (SJT)
\r
1161 # define FARDATA FAR
\r
1163 # endif /* __WIN32__, __FLAT__, __CYGWIN__ */
\r
1164 #endif /* __BORLANDC__ */
\r
1167 /* Suggest testing for specific compiler first before testing for
\r
1168 * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM,
\r
1169 * making reliance oncertain keywords suspect. (SJT)
\r
1172 /* MSC Medium model */
\r
1174 # if defined(M_I86MM)
\r
1175 # define USE_FAR_KEYWORD
\r
1176 # define FARDATA FAR
\r
1181 /* SJT: default case */
\r
1186 /* At this point FAR is always defined */
\r
1191 /* Typedef for floating-point numbers that are converted
\r
1192 to fixed-point with a multiple of 100,000, e.g., int_gamma */
\r
1193 typedef png_int_32 png_fixed_point;
\r
1195 /* Add typedefs for pointers */
\r
1196 typedef void FAR * png_voidp;
\r
1197 typedef png_byte FAR * png_bytep;
\r
1198 typedef png_uint_32 FAR * png_uint_32p;
\r
1199 typedef png_int_32 FAR * png_int_32p;
\r
1200 typedef png_uint_16 FAR * png_uint_16p;
\r
1201 typedef png_int_16 FAR * png_int_16p;
\r
1202 typedef PNG_CONST char FAR * png_const_charp;
\r
1203 typedef char FAR * png_charp;
\r
1204 typedef png_fixed_point FAR * png_fixed_point_p;
\r
1206 #ifndef PNG_NO_STDIO
\r
1207 #if defined(_WIN32_WCE)
\r
1208 typedef HANDLE png_FILE_p;
\r
1210 typedef FILE * png_FILE_p;
\r
1214 #ifdef PNG_FLOATING_POINT_SUPPORTED
\r
1215 typedef double FAR * png_doublep;
\r
1218 /* Pointers to pointers; i.e. arrays */
\r
1219 typedef png_byte FAR * FAR * png_bytepp;
\r
1220 typedef png_uint_32 FAR * FAR * png_uint_32pp;
\r
1221 typedef png_int_32 FAR * FAR * png_int_32pp;
\r
1222 typedef png_uint_16 FAR * FAR * png_uint_16pp;
\r
1223 typedef png_int_16 FAR * FAR * png_int_16pp;
\r
1224 typedef PNG_CONST char FAR * FAR * png_const_charpp;
\r
1225 typedef char FAR * FAR * png_charpp;
\r
1226 typedef png_fixed_point FAR * FAR * png_fixed_point_pp;
\r
1227 #ifdef PNG_FLOATING_POINT_SUPPORTED
\r
1228 typedef double FAR * FAR * png_doublepp;
\r
1231 /* Pointers to pointers to pointers; i.e., pointer to array */
\r
1232 typedef char FAR * FAR * FAR * png_charppp;
\r
1234 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
\r
1235 /* SPC - Is this stuff deprecated? */
\r
1236 /* It'll be removed as of libpng-1.3.0 - GR-P */
\r
1237 /* libpng typedefs for types in zlib. If zlib changes
\r
1238 * or another compression library is used, then change these.
\r
1239 * Eliminates need to change all the source files.
\r
1241 typedef charf * png_zcharp;
\r
1242 typedef charf * FAR * png_zcharpp;
\r
1243 typedef z_stream FAR * png_zstreamp;
\r
1244 #endif /* (PNG_1_0_X) || defined(PNG_1_2_X) */
\r
1247 * Define PNG_BUILD_DLL if the module being built is a Windows
\r
1250 * Define PNG_USE_DLL if you want to *link* to the Windows LIBPNG DLL.
\r
1251 * It is equivalent to Microsoft predefined macro _DLL that is
\r
1252 * automatically defined when you compile using the share
\r
1253 * version of the CRT (C Run-Time library)
\r
1255 * The cygwin mods make this behavior a little different:
\r
1256 * Define PNG_BUILD_DLL if you are building a dll for use with cygwin
\r
1257 * Define PNG_STATIC if you are building a static library for use with cygwin,
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1258 * -or- if you are building an application that you want to link to the
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1260 * PNG_USE_DLL is defined by default (no user action needed) unless one of
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1261 * the other flags is defined.
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1264 #if !defined(PNG_DLL) && (defined(PNG_BUILD_DLL) || defined(PNG_USE_DLL))
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1267 /* If CYGWIN, then disallow GLOBAL ARRAYS unless building a static lib.
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1268 * When building a static lib, default to no GLOBAL ARRAYS, but allow
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1269 * command-line override
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1271 #if defined(__CYGWIN__)
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1272 # if !defined(PNG_STATIC)
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1273 # if defined(PNG_USE_GLOBAL_ARRAYS)
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1274 # undef PNG_USE_GLOBAL_ARRAYS
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1276 # if !defined(PNG_USE_LOCAL_ARRAYS)
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1277 # define PNG_USE_LOCAL_ARRAYS
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1280 # if defined(PNG_USE_LOCAL_ARRAYS) || defined(PNG_NO_GLOBAL_ARRAYS)
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1281 # if defined(PNG_USE_GLOBAL_ARRAYS)
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1282 # undef PNG_USE_GLOBAL_ARRAYS
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1286 # if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
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1287 # define PNG_USE_LOCAL_ARRAYS
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1291 /* Do not use global arrays (helps with building DLL's)
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1292 * They are no longer used in libpng itself, since version 1.0.5c,
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1293 * but might be required for some pre-1.0.5c applications.
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1295 #if !defined(PNG_USE_LOCAL_ARRAYS) && !defined(PNG_USE_GLOBAL_ARRAYS)
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1296 # if defined(PNG_NO_GLOBAL_ARRAYS) || \
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1297 (defined(__GNUC__) && defined(PNG_DLL)) || defined(_MSC_VER)
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1298 # define PNG_USE_LOCAL_ARRAYS
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1300 # define PNG_USE_GLOBAL_ARRAYS
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1304 #if defined(__CYGWIN__)
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1306 # define PNGAPI __cdecl
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1307 # undef PNG_IMPEXP
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1308 # define PNG_IMPEXP
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1311 /* If you define PNGAPI, e.g., with compiler option "-DPNGAPI=__stdcall",
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1312 * you may get warnings regarding the linkage of png_zalloc and png_zfree.
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1313 * Don't ignore those warnings; you must also reset the default calling
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1314 * convention in your compiler to match your PNGAPI, and you must build
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1315 * zlib and your applications the same way you build libpng.
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1318 #if defined(__MINGW32__) && !defined(PNG_MODULEDEF)
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1319 # ifndef PNG_NO_MODULEDEF
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1320 # define PNG_NO_MODULEDEF
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1324 #if !defined(PNG_IMPEXP) && defined(PNG_BUILD_DLL) && !defined(PNG_NO_MODULEDEF)
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1325 # define PNG_IMPEXP
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1328 #if defined(PNG_DLL) || defined(_DLL) || defined(__DLL__ ) || \
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1329 (( defined(_Windows) || defined(_WINDOWS) || \
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1330 defined(WIN32) || defined(_WIN32) || defined(__WIN32__) ))
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1333 # if defined(__GNUC__) || (defined (_MSC_VER) && (_MSC_VER >= 800))
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1334 # define PNGAPI __cdecl
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1336 # define PNGAPI _cdecl
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1340 # if !defined(PNG_IMPEXP) && (!defined(PNG_DLL) || \
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1341 0 /* WINCOMPILER_WITH_NO_SUPPORT_FOR_DECLIMPEXP */)
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1342 # define PNG_IMPEXP
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1345 # if !defined(PNG_IMPEXP)
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1347 # define PNG_EXPORT_TYPE1(type,symbol) PNG_IMPEXP type PNGAPI symbol
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1348 # define PNG_EXPORT_TYPE2(type,symbol) type PNG_IMPEXP PNGAPI symbol
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1350 /* Borland/Microsoft */
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1351 # if defined(_MSC_VER) || defined(__BORLANDC__)
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1352 # if (_MSC_VER >= 800) || (__BORLANDC__ >= 0x500)
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1353 # define PNG_EXPORT PNG_EXPORT_TYPE1
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1355 # define PNG_EXPORT PNG_EXPORT_TYPE2
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1356 # if defined(PNG_BUILD_DLL)
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1357 # define PNG_IMPEXP __export
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1359 # define PNG_IMPEXP /*__import */ /* doesn't exist AFAIK in
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1361 # endif /* Exists in Borland C++ for
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1362 C++ classes (== huge) */
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1366 # if !defined(PNG_IMPEXP)
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1367 # if defined(PNG_BUILD_DLL)
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1368 # define PNG_IMPEXP __declspec(dllexport)
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1370 # define PNG_IMPEXP __declspec(dllimport)
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1373 # endif /* PNG_IMPEXP */
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1374 #else /* !(DLL || non-cygwin WINDOWS) */
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1375 # if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
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1377 # define PNGAPI _System
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1380 # if 0 /* ... other platforms, with other meanings */
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1388 #ifndef PNG_IMPEXP
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1389 # define PNG_IMPEXP
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1392 #ifdef PNG_BUILDSYMS
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1393 # ifndef PNG_EXPORT
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1394 # define PNG_EXPORT(type,symbol) PNG_FUNCTION_EXPORT symbol END
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1396 # ifdef PNG_USE_GLOBAL_ARRAYS
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1397 # ifndef PNG_EXPORT_VAR
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1398 # define PNG_EXPORT_VAR(type) PNG_DATA_EXPORT
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1403 #ifndef PNG_EXPORT
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1404 # define PNG_EXPORT(type,symbol) PNG_IMPEXP type PNGAPI symbol
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1407 #ifdef PNG_USE_GLOBAL_ARRAYS
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1408 # ifndef PNG_EXPORT_VAR
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1409 # define PNG_EXPORT_VAR(type) extern PNG_IMPEXP type
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1413 /* User may want to use these so they are not in PNG_INTERNAL. Any library
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1414 * functions that are passed far data must be model independent.
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1418 # define PNG_ABORT() abort()
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1421 #ifdef PNG_SETJMP_SUPPORTED
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1422 # define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
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1424 # define png_jmpbuf(png_ptr) \
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1425 (LIBPNG_WAS_COMPILED_WITH__PNG_SETJMP_NOT_SUPPORTED)
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1428 #if defined(USE_FAR_KEYWORD) /* memory model independent fns */
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1429 /* use this to make far-to-near assignments */
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1431 # define NOCHECK 0
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1432 # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK))
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1433 # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK))
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1434 # define png_snprintf _fsnprintf /* Added to v 1.2.19 */
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1435 # define png_strlen _fstrlen
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1436 # define png_memcmp _fmemcmp /* SJT: added */
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1437 # define png_memcpy _fmemcpy
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1438 # define png_memset _fmemset
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1439 #else /* use the usual functions */
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1440 # define CVT_PTR(ptr) (ptr)
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1441 # define CVT_PTR_NOCHECK(ptr) (ptr)
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1442 # ifndef PNG_NO_SNPRINTF
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1444 # define png_snprintf _snprintf /* Added to v 1.2.19 */
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1445 # define png_snprintf2 _snprintf
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1446 # define png_snprintf6 _snprintf
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1448 # define png_snprintf snprintf /* Added to v 1.2.19 */
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1449 # define png_snprintf2 snprintf
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1450 # define png_snprintf6 snprintf
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1453 /* You don't have or don't want to use snprintf(). Caution: Using
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1454 * sprintf instead of snprintf exposes your application to accidental
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1455 * or malevolent buffer overflows. If you don't have snprintf()
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1456 * as a general rule you should provide one (you can get one from
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1457 * Portable OpenSSH). */
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1458 # define png_snprintf(s1,n,fmt,x1) sprintf(s1,fmt,x1)
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1459 # define png_snprintf2(s1,n,fmt,x1,x2) sprintf(s1,fmt,x1,x2)
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1460 # define png_snprintf6(s1,n,fmt,x1,x2,x3,x4,x5,x6) \
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1461 sprintf(s1,fmt,x1,x2,x3,x4,x5,x6)
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1463 # define png_strlen strlen
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1464 # define png_memcmp memcmp /* SJT: added */
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1465 # define png_memcpy memcpy
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1466 # define png_memset memset
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1468 /* End of memory model independent support */
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1470 /* Just a little check that someone hasn't tried to define something
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1473 #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
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1474 # undef PNG_ZBUF_SIZE
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1475 # define PNG_ZBUF_SIZE 65536L
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1478 /* Added at libpng-1.2.8 */
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1479 #endif /* PNG_VERSION_INFO_ONLY */
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1481 #endif /* PNGCONF_H */
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projects / dosrtxon / blob