| | 1 | |
| | 2 | /* pngconf.h - machine configurable file for libpng |
| | 3 | * |
| | 4 | * libpng 1.0.3 - January 14, 1999 |
| | 5 | * For conditions of distribution and use, see copyright notice in png.h |
| | 6 | * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. |
| | 7 | * Copyright (c) 1996, 1997 Andreas Dilger |
| | 8 | * Copyright (c) 1998, 1999 Glenn Randers-Pehrson |
| | 9 | */ |
| | 10 | |
| | 11 | /* Any machine specific code is near the front of this file, so if you |
| | 12 | * are configuring libpng for a machine, you may want to read the section |
| | 13 | * starting here down to where it starts to typedef png_color, png_text, |
| | 14 | * and png_info. |
| | 15 | */ |
| | 16 | |
| | 17 | #ifndef PNGCONF_H |
| | 18 | #define PNGCONF_H |
| | 19 | |
| | 20 | |
| | 21 | /* This is the size of the compression buffer, and thus the size of |
| | 22 | * an IDAT chunk. Make this whatever size you feel is best for your |
| | 23 | * machine. One of these will be allocated per png_struct. When this |
| | 24 | * is full, it writes the data to the disk, and does some other |
| | 25 | * calculations. Making this an extremely small size will slow |
| | 26 | * the library down, but you may want to experiment to determine |
| | 27 | * where it becomes significant, if you are concerned with memory |
| | 28 | * usage. Note that zlib allocates at least 32Kb also. For readers, |
| | 29 | * this describes the size of the buffer available to read the data in. |
| | 30 | * Unless this gets smaller than the size of a row (compressed), |
| | 31 | * it should not make much difference how big this is. |
| | 32 | */ |
| | 33 | |
| | 34 | #ifndef PNG_ZBUF_SIZE |
| | 35 | #define PNG_ZBUF_SIZE 8192 |
| | 36 | #endif |
| | 37 | |
| | 38 | /* If you are running on a machine where you cannot allocate more |
| | 39 | * than 64K of memory at once, uncomment this. While libpng will not |
| | 40 | * normally need that much memory in a chunk (unless you load up a very |
| | 41 | * large file), zlib needs to know how big of a chunk it can use, and |
| | 42 | * libpng thus makes sure to check any memory allocation to verify it |
| | 43 | * will fit into memory. |
| | 44 | #define PNG_MAX_MALLOC_64K |
| | 45 | */ |
| | 46 | #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) |
| | 47 | #define PNG_MAX_MALLOC_64K |
| | 48 | #endif |
| | 49 | |
| | 50 | /* This protects us against compilers that run on a windowing system |
| | 51 | * and thus don't have or would rather us not use the stdio types: |
| | 52 | * stdin, stdout, and stderr. The only one currently used is stderr |
| | 53 | * in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will |
| | 54 | * prevent these from being compiled and used. #defining PNG_NO_STDIO |
| | 55 | * will also prevent these, plus will prevent the entire set of stdio |
| | 56 | * macros and functions (FILE *, printf, etc.) from being compiled and used, |
| | 57 | * unless PNG_DEBUG has been #defined. |
| | 58 | * |
| | 59 | * #define PNG_NO_CONSOLE_IO |
| | 60 | * #define PNG_NO_STDIO |
| | 61 | */ |
| | 62 | |
| | 63 | #ifdef PNG_DEBUG |
| | 64 | # if (PNG_DEBUG > 0) |
| | 65 | # include <stdio.h> |
| | 66 | # endif |
| | 67 | #else |
| | 68 | # ifdef PNG_NO_STDIO |
| | 69 | # ifndef PNG_NO_CONSOLE_IO |
| | 70 | # define PNG_NO_CONSOLE_IO |
| | 71 | # endif |
| | 72 | # else |
| | 73 | # include <stdio.h> |
| | 74 | # endif |
| | 75 | #endif |
| | 76 | |
| | 77 | /* This macro protects us against machines that don't have function |
| | 78 | * prototypes (ie K&R style headers). If your compiler does not handle |
| | 79 | * function prototypes, define this macro and use the included ansi2knr. |
| | 80 | * I've always been able to use _NO_PROTO as the indicator, but you may |
| | 81 | * need to drag the empty declaration out in front of here, or change the |
| | 82 | * ifdef to suit your own needs. |
| | 83 | */ |
| | 84 | #ifndef PNGARG |
| | 85 | |
| | 86 | #ifdef OF /* zlib prototype munger */ |
| | 87 | #define PNGARG(arglist) OF(arglist) |
| | 88 | #else |
| | 89 | |
| | 90 | #ifdef _NO_PROTO |
| | 91 | #define PNGARG(arglist) () |
| | 92 | #else |
| | 93 | #define PNGARG(arglist) arglist |
| | 94 | #endif /* _NO_PROTO */ |
| | 95 | |
| | 96 | #endif /* OF */ |
| | 97 | |
| | 98 | #endif /* PNGARG */ |
| | 99 | |
| | 100 | /* Try to determine if we are compiling on a Mac. Note that testing for |
| | 101 | * just __MWERKS__ is not good enough, because the Codewarrior is now used |
| | 102 | * on non-Mac platforms. |
| | 103 | */ |
| | 104 | #ifndef MACOS |
| | 105 | #if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ |
| | 106 | defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) |
| | 107 | #define MACOS |
| | 108 | #endif |
| | 109 | #endif |
| | 110 | |
| | 111 | /* enough people need this for various reasons to include it here */ |
| | 112 | #if !defined(MACOS) && !defined(RISCOS) |
| | 113 | #include <sys/types.h> |
| | 114 | #endif |
| | 115 | |
| | 116 | /* This is an attempt to force a single setjmp behaviour on Linux. If |
| | 117 | * the X config stuff didn't define _BSD_SOURCE we wouldn't need this. |
| | 118 | */ |
| | 119 | #ifdef __linux__ |
| | 120 | #ifdef _BSD_SOURCE |
| | 121 | #define _PNG_SAVE_BSD_SOURCE |
| | 122 | #undef _BSD_SOURCE |
| | 123 | #endif |
| | 124 | #ifdef _SETJMP_H |
| | 125 | __png.h__ already includes setjmp.h |
| | 126 | __dont__ include it again |
| | 127 | #endif |
| | 128 | #endif /* __linux__ */ |
| | 129 | |
| | 130 | /* include setjmp.h for error handling */ |
| | 131 | #include <setjmp.h> |
| | 132 | |
| | 133 | #ifdef __linux__ |
| | 134 | #ifdef _PNG_SAVE_BSD_SOURCE |
| | 135 | #define _BSD_SOURCE |
| | 136 | #undef _PNG_SAVE_BSD_SOURCE |
| | 137 | #endif |
| | 138 | #endif /* __linux__ */ |
| | 139 | |
| | 140 | #ifdef BSD |
| | 141 | #include <strings.h> |
| | 142 | #else |
| | 143 | #include <string.h> |
| | 144 | #endif |
| | 145 | |
| | 146 | /* Other defines for things like memory and the like can go here. */ |
| | 147 | #ifdef PNG_INTERNAL |
| | 148 | #include <stdlib.h> |
| | 149 | |
| | 150 | /* The functions exported by PNG_EXTERN are PNG_INTERNAL functions, which |
| | 151 | * aren't usually used outside the library (as far as I know), so it is |
| | 152 | * debatable if they should be exported at all. In the future, when it is |
| | 153 | * possible to have run-time registry of chunk-handling functions, some of |
| | 154 | * these will be made available again. |
| | 155 | #define PNG_EXTERN extern |
| | 156 | */ |
| | 157 | #define PNG_EXTERN |
| | 158 | |
| | 159 | /* Other defines specific to compilers can go here. Try to keep |
| | 160 | * them inside an appropriate ifdef/endif pair for portability. |
| | 161 | */ |
| | 162 | |
| | 163 | #if defined(MACOS) |
| | 164 | /* We need to check that <math.h> hasn't already been included earlier |
| | 165 | * as it seems it doesn't agree with <fp.h>, yet we should really use |
| | 166 | * <fp.h> if possible. |
| | 167 | */ |
| | 168 | #if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) |
| | 169 | #include <fp.h> |
| | 170 | #endif |
| | 171 | #else |
| | 172 | #include <math.h> |
| | 173 | #endif |
| | 174 | |
| | 175 | /* Codewarrior on NT has linking problems without this. */ |
| | 176 | #if defined(__MWERKS__) && defined(WIN32) |
| | 177 | #define PNG_ALWAYS_EXTERN |
| | 178 | #endif |
| | 179 | |
| | 180 | /* For some reason, Borland C++ defines memcmp, etc. in mem.h, not |
| | 181 | * stdlib.h like it should (I think). Or perhaps this is a C++ |
| | 182 | * "feature"? |
| | 183 | */ |
| | 184 | #ifdef __TURBOC__ |
| | 185 | #include <mem.h> |
| | 186 | #include "alloc.h" |
| | 187 | #endif |
| | 188 | |
| | 189 | #ifdef _MSC_VER |
| | 190 | #include <malloc.h> |
| | 191 | #endif |
| | 192 | |
| | 193 | /* This controls how fine the dithering gets. As this allocates |
| | 194 | * a largish chunk of memory (32K), those who are not as concerned |
| | 195 | * with dithering quality can decrease some or all of these. |
| | 196 | */ |
| | 197 | #ifndef PNG_DITHER_RED_BITS |
| | 198 | #define PNG_DITHER_RED_BITS 5 |
| | 199 | #endif |
| | 200 | #ifndef PNG_DITHER_GREEN_BITS |
| | 201 | #define PNG_DITHER_GREEN_BITS 5 |
| | 202 | #endif |
| | 203 | #ifndef PNG_DITHER_BLUE_BITS |
| | 204 | #define PNG_DITHER_BLUE_BITS 5 |
| | 205 | #endif |
| | 206 | |
| | 207 | /* This controls how fine the gamma correction becomes when you |
| | 208 | * are only interested in 8 bits anyway. Increasing this value |
| | 209 | * results in more memory being used, and more pow() functions |
| | 210 | * being called to fill in the gamma tables. Don't set this value |
| | 211 | * less then 8, and even that may not work (I haven't tested it). |
| | 212 | */ |
| | 213 | |
| | 214 | #ifndef PNG_MAX_GAMMA_8 |
| | 215 | #define PNG_MAX_GAMMA_8 11 |
| | 216 | #endif |
| | 217 | |
| | 218 | /* This controls how much a difference in gamma we can tolerate before |
| | 219 | * we actually start doing gamma conversion. |
| | 220 | */ |
| | 221 | #ifndef PNG_GAMMA_THRESHOLD |
| | 222 | #define PNG_GAMMA_THRESHOLD 0.05 |
| | 223 | #endif |
| | 224 | |
| | 225 | #endif /* PNG_INTERNAL */ |
| | 226 | |
| | 227 | /* The following uses const char * instead of char * for error |
| | 228 | * and warning message functions, so some compilers won't complain. |
| | 229 | * If you do not want to use const, define PNG_NO_CONST here. |
| | 230 | */ |
| | 231 | |
| | 232 | #ifndef PNG_NO_CONST |
| | 233 | # define PNG_CONST const |
| | 234 | #else |
| | 235 | # define PNG_CONST |
| | 236 | #endif |
| | 237 | |
| | 238 | /* The following defines give you the ability to remove code from the |
| | 239 | * library that you will not be using. I wish I could figure out how to |
| | 240 | * automate this, but I can't do that without making it seriously hard |
| | 241 | * on the users. So if you are not using an ability, change the #define |
| | 242 | * to and #undef, and that part of the library will not be compiled. If |
| | 243 | * your linker can't find a function, you may want to make sure the |
| | 244 | * ability is defined here. Some of these depend upon some others being |
| | 245 | * defined. I haven't figured out all the interactions here, so you may |
| | 246 | * have to experiment awhile to get everything to compile. If you are |
| | 247 | * creating or using a shared library, you probably shouldn't touch this, |
| | 248 | * as it will affect the size of the structures, and this will cause bad |
| | 249 | * things to happen if the library and/or application ever change. |
| | 250 | */ |
| | 251 | |
| | 252 | /* Any transformations you will not be using can be undef'ed here */ |
| | 253 | |
| | 254 | /* GR-P, 0.96a: Set "*TRANSFORMS_SUPPORTED as default but allow user |
| | 255 | to turn it off with "*TRANSFORMS_NOT_SUPPORTED" or *PNG_NO_*_TRANSFORMS |
| | 256 | on the compile line, then pick and choose which ones to define without |
| | 257 | having to edit this file. It is safe to use the *TRANSFORMS_NOT_SUPPORTED |
| | 258 | if you only want to have a png-compliant reader/writer but don't need |
| | 259 | any of the extra transformations. This saves about 80 kbytes in a |
| | 260 | typical installation of the library. (PNG_NO_* form added in version |
| | 261 | 1.0.1c, for consistency) |
| | 262 | */ |
| | 263 | |
| | 264 | |
| | 265 | #if !defined(PNG_READ_TRANSFORMS_NOT_SUPPORTED) && \ |
| | 266 | !defined(PNG_NO_READ_TRANSFORMS) |
| | 267 | #define PNG_READ_TRANSFORMS_SUPPORTED |
| | 268 | #endif |
| | 269 | #if !defined(PNG_WRITE_TRANSFORMS_NOT_SUPPORTED) && \ |
| | 270 | !defined(PNG_NO_WRITE_TRANSFORMS) |
| | 271 | #define PNG_WRITE_TRANSFORMS_SUPPORTED |
| | 272 | #endif |
| | 273 | |
| | 274 | #ifdef PNG_READ_TRANSFORMS_SUPPORTED |
| | 275 | #ifndef PNG_NO_READ_EXPAND |
| | 276 | #define PNG_READ_EXPAND_SUPPORTED |
| | 277 | #endif |
| | 278 | #ifndef PNG_NO_READ_SHIFT |
| | 279 | #define PNG_READ_SHIFT_SUPPORTED |
| | 280 | #endif |
| | 281 | #ifndef PNG_NO_READ_PACK |
| | 282 | #define PNG_READ_PACK_SUPPORTED |
| | 283 | #endif |
| | 284 | #ifndef PNG_NO_READ_BGR |
| | 285 | #define PNG_READ_BGR_SUPPORTED |
| | 286 | #endif |
| | 287 | #ifndef PNG_NO_READ_SWAP |
| | 288 | #define PNG_READ_SWAP_SUPPORTED |
| | 289 | #endif |
| | 290 | #ifndef PNG_NO_READ_PACKSWAP |
| | 291 | #define PNG_READ_PACKSWAP_SUPPORTED |
| | 292 | #endif |
| | 293 | #ifndef PNG_NO_READ_INVERT |
| | 294 | #define PNG_READ_INVERT_SUPPORTED |
| | 295 | #endif |
| | 296 | #ifndef PNG_NO_READ_DITHER |
| | 297 | #define PNG_READ_DITHER_SUPPORTED |
| | 298 | #endif |
| | 299 | #ifndef PNG_NO_READ_BACKGROUND |
| | 300 | #define PNG_READ_BACKGROUND_SUPPORTED |
| | 301 | #endif |
| | 302 | #ifndef PNG_NO_READ_16_TO_8 |
| | 303 | #define PNG_READ_16_TO_8_SUPPORTED |
| | 304 | #endif |
| | 305 | #ifndef PNG_NO_READ_FILLER |
| | 306 | #define PNG_READ_FILLER_SUPPORTED |
| | 307 | #endif |
| | 308 | #ifndef PNG_NO_READ_GAMMA |
| | 309 | #define PNG_READ_GAMMA_SUPPORTED |
| | 310 | #endif |
| | 311 | #ifndef PNG_NO_READ_GRAY_TO_RGB |
| | 312 | #define PNG_READ_GRAY_TO_RGB_SUPPORTED |
| | 313 | #endif |
| | 314 | #ifndef PNG_NO_READ_SWAP_ALPHA |
| | 315 | #define PNG_READ_SWAP_ALPHA_SUPPORTED |
| | 316 | #endif |
| | 317 | #ifndef PNG_NO_READ_INVERT_ALPHA |
| | 318 | #define PNG_READ_INVERT_ALPHA_SUPPORTED |
| | 319 | #endif |
| | 320 | #ifndef PNG_NO_READ_STRIP_ALPHA |
| | 321 | #define PNG_READ_STRIP_ALPHA_SUPPORTED |
| | 322 | #endif |
| | 323 | #ifndef PNG_NO_READ_USER_TRANSFORM |
| | 324 | #define PNG_READ_USER_TRANSFORM_SUPPORTED |
| | 325 | #endif |
| | 326 | #ifndef PNG_NO_READ_RGB_TO_GRAY |
| | 327 | #define PNG_READ_RGB_TO_GRAY_SUPPORTED |
| | 328 | #endif |
| | 329 | #endif /* PNG_READ_TRANSFORMS_SUPPORTED */ |
| | 330 | |
| | 331 | #if !defined(PNG_NO_PROGRESSIVE_READ) && \ |
| | 332 | !defined(PNG_PROGRESSIVE_READ_NOT_SUPPORTED) /* if you don't do progressive */ |
| | 333 | #define PNG_PROGRESSIVE_READ_SUPPORTED /* reading. This is not talking */ |
| | 334 | #endif /* about interlacing capability! You'll */ |
| | 335 | /* still have interlacing unless you change the following line: */ |
| | 336 | #define PNG_READ_INTERLACING_SUPPORTED /* required for PNG-compliant decoders */ |
| | 337 | |
| | 338 | #ifndef PNG_NO_READ_COMPOSITED_NODIV |
| | 339 | #define PNG_READ_COMPOSITE_NODIV_SUPPORTED /* well tested on Intel and SGI */ |
| | 340 | #endif |
| | 341 | |
| | 342 | #ifdef PNG_WRITE_TRANSFORMS_SUPPORTED |
| | 343 | #ifndef PNG_NO_WRITE_SHIFT |
| | 344 | #define PNG_WRITE_SHIFT_SUPPORTED |
| | 345 | #endif |
| | 346 | #ifndef PNG_NO_WRITE_PACK |
| | 347 | #define PNG_WRITE_PACK_SUPPORTED |
| | 348 | #endif |
| | 349 | #ifndef PNG_NO_WRITE_BGR |
| | 350 | #define PNG_WRITE_BGR_SUPPORTED |
| | 351 | #endif |
| | 352 | #ifndef PNG_NO_WRITE_SWAP |
| | 353 | #define PNG_WRITE_SWAP_SUPPORTED |
| | 354 | #endif |
| | 355 | #ifndef PNG_NO_WRITE_PACKSWAP |
| | 356 | #define PNG_WRITE_PACKSWAP_SUPPORTED |
| | 357 | #endif |
| | 358 | #ifndef PNG_NO_WRITE_INVERT |
| | 359 | #define PNG_WRITE_INVERT_SUPPORTED |
| | 360 | #endif |
| | 361 | #ifndef PNG_NO_WRITE_FILLER |
| | 362 | #define PNG_WRITE_FILLER_SUPPORTED /* This is the same as WRITE_STRIP_ALPHA */ |
| | 363 | #endif |
| | 364 | #ifndef PNG_NO_WRITE_SWAP_ALPHA |
| | 365 | #define PNG_WRITE_SWAP_ALPHA_SUPPORTED |
| | 366 | #endif |
| | 367 | #ifndef PNG_NO_WRITE_INVERT_ALPHA |
| | 368 | #define PNG_WRITE_INVERT_ALPHA_SUPPORTED |
| | 369 | #endif |
| | 370 | #ifndef PNG_NO_WRITE_USER_TRANSFORM |
| | 371 | #define PNG_WRITE_USER_TRANSFORM_SUPPORTED |
| | 372 | #endif |
| | 373 | #endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */ |
| | 374 | |
| | 375 | #define PNG_WRITE_INTERLACING_SUPPORTED /* not required for PNG-compliant |
| | 376 | encoders, but can cause trouble |
| | 377 | if left undefined */ |
| | 378 | |
| | 379 | #ifndef PNG_NO_WRITE_WEIGHTED_FILTER |
| | 380 | #define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED |
| | 381 | #endif |
| | 382 | |
| | 383 | #ifndef PNG_NO_WRITE_FLUSH |
| | 384 | #define PNG_WRITE_FLUSH_SUPPORTED |
| | 385 | #endif |
| | 386 | |
| | 387 | #ifndef PNG_NO_STDIO |
| | 388 | #define PNG_TIME_RFC1123_SUPPORTED |
| | 389 | #endif |
| | 390 | |
| | 391 | /* This adds extra functions in pngget.c for accessing data from the |
| | 392 | * info pointer (added in version 0.99) |
| | 393 | * png_get_image_width() |
| | 394 | * png_get_image_height() |
| | 395 | * png_get_bit_depth() |
| | 396 | * png_get_color_type() |
| | 397 | * png_get_compression_type() |
| | 398 | * png_get_filter_type() |
| | 399 | * png_get_interlace_type() |
| | 400 | * png_get_pixel_aspect_ratio() |
| | 401 | * png_get_pixels_per_meter() |
| | 402 | * png_get_x_offset_pixels() |
| | 403 | * png_get_y_offset_pixels() |
| | 404 | * png_get_x_offset_microns() |
| | 405 | * png_get_y_offset_microns() |
| | 406 | */ |
| | 407 | #ifndef PNG_NO_EASY_ACCESS |
| | 408 | #define PNG_EASY_ACCESS_SUPPORTED |
| | 409 | #endif |
| | 410 | |
| | 411 | /* These are currently experimental features, define them if you want */ |
| | 412 | |
| | 413 | /* very little testing */ |
| | 414 | /* |
| | 415 | #define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED |
| | 416 | #define PNG_USER_MEM_SUPPORTED |
| | 417 | */ |
| | 418 | |
| | 419 | /* This is only for PowerPC big-endian and 680x0 systems */ |
| | 420 | /* some testing */ |
| | 421 | /* |
| | 422 | #define PNG_READ_BIG_ENDIAN_SUPPORTED |
| | 423 | */ |
| | 424 | |
| | 425 | /* These functions are turned off by default, as they will be phased out. */ |
| | 426 | /* |
| | 427 | #define PNG_USELESS_TESTS_SUPPORTED |
| | 428 | #define PNG_CORRECT_PALETTE_SUPPORTED |
| | 429 | */ |
| | 430 | |
| | 431 | /* Any chunks you are not interested in, you can undef here. The |
| | 432 | * ones that allocate memory may be expecially important (hIST, |
| | 433 | * tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info |
| | 434 | * a bit smaller. |
| | 435 | */ |
| | 436 | |
| | 437 | #if !defined(PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ |
| | 438 | !defined(PNG_NO_READ_ANCILLARY_CHUNKS) |
| | 439 | #define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED |
| | 440 | #endif |
| | 441 | #if !defined(PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED) && \ |
| | 442 | !defined(PNG_NO_WRITE_ANCILLARY_CHUNKS) |
| | 443 | #define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED |
| | 444 | #endif |
| | 445 | |
| | 446 | #ifdef PNG_READ_ANCILLARY_CHUNKS_SUPPORTED |
| | 447 | #ifndef PNG_NO_READ_bKGD |
| | 448 | #define PNG_READ_bKGD_SUPPORTED |
| | 449 | #endif |
| | 450 | #ifndef PNG_NO_READ_cHRM |
| | 451 | #define PNG_READ_cHRM_SUPPORTED |
| | 452 | #endif |
| | 453 | #ifndef PNG_NO_READ_gAMA |
| | 454 | #define PNG_READ_gAMA_SUPPORTED |
| | 455 | #endif |
| | 456 | #ifndef PNG_NO_READ_hIST |
| | 457 | #define PNG_READ_hIST_SUPPORTED |
| | 458 | #endif |
| | 459 | #ifndef PNG_NO_READ_oFFs |
| | 460 | #define PNG_READ_oFFs_SUPPORTED |
| | 461 | #endif |
| | 462 | #ifndef PNG_NO_READ_pCAL |
| | 463 | #define PNG_READ_pCAL_SUPPORTED |
| | 464 | #endif |
| | 465 | #ifndef PNG_NO_READ_pHYs |
| | 466 | #define PNG_READ_pHYs_SUPPORTED |
| | 467 | #endif |
| | 468 | #ifndef PNG_NO_READ_sBIT |
| | 469 | #define PNG_READ_sBIT_SUPPORTED |
| | 470 | #endif |
| | 471 | #ifndef PNG_NO_READ_sRGB |
| | 472 | #define PNG_READ_sRGB_SUPPORTED |
| | 473 | #endif |
| | 474 | #ifndef PNG_NO_READ_tEXt |
| | 475 | #define PNG_READ_tEXt_SUPPORTED |
| | 476 | #endif |
| | 477 | #ifndef PNG_NO_READ_tIME |
| | 478 | #define PNG_READ_tIME_SUPPORTED |
| | 479 | #endif |
| | 480 | #ifndef PNG_NO_READ_tRNS |
| | 481 | #define PNG_READ_tRNS_SUPPORTED |
| | 482 | #endif |
| | 483 | #ifndef PNG_NO_READ_zTXt |
| | 484 | #define PNG_READ_zTXt_SUPPORTED |
| | 485 | #endif |
| | 486 | #ifndef PNG_NO_READ_OPT_PLTE |
| | 487 | #define PNG_READ_OPT_PLTE_SUPPORTED /* only affects support of the optional */ |
| | 488 | #endif /* PLTE chunk in RGB and RGBA images */ |
| | 489 | #endif /* PNG_READ_ANCILLARY_CHUNKS_SUPPORTED */ |
| | 490 | |
| | 491 | #ifdef PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED |
| | 492 | #ifndef PNG_NO_WRITE_bKGD |
| | 493 | #define PNG_WRITE_bKGD_SUPPORTED |
| | 494 | #endif |
| | 495 | #ifndef PNG_NO_WRITE_cHRM |
| | 496 | #define PNG_WRITE_cHRM_SUPPORTED |
| | 497 | #endif |
| | 498 | #ifndef PNG_NO_WRITE_gAMA |
| | 499 | #define PNG_WRITE_gAMA_SUPPORTED |
| | 500 | #endif |
| | 501 | #ifndef PNG_NO_WRITE_hIST |
| | 502 | #define PNG_WRITE_hIST_SUPPORTED |
| | 503 | #endif |
| | 504 | #ifndef PNG_NO_WRITE_oFFs |
| | 505 | #define PNG_WRITE_oFFs_SUPPORTED |
| | 506 | #endif |
| | 507 | #ifndef PNG_NO_WRITE_pCAL |
| | 508 | #define PNG_WRITE_pCAL_SUPPORTED |
| | 509 | #endif |
| | 510 | #ifndef PNG_NO_WRITE_pHYs |
| | 511 | #define PNG_WRITE_pHYs_SUPPORTED |
| | 512 | #endif |
| | 513 | #ifndef PNG_NO_WRITE_sBIT |
| | 514 | #define PNG_WRITE_sBIT_SUPPORTED |
| | 515 | #endif |
| | 516 | #ifndef PNG_NO_WRITE_sRGB |
| | 517 | #define PNG_WRITE_sRGB_SUPPORTED |
| | 518 | #endif |
| | 519 | #ifndef PNG_NO_WRITE_tEXt |
| | 520 | #define PNG_WRITE_tEXt_SUPPORTED |
| | 521 | #endif |
| | 522 | #ifndef PNG_NO_WRITE_tIME |
| | 523 | #define PNG_WRITE_tIME_SUPPORTED |
| | 524 | #endif |
| | 525 | #ifndef PNG_NO_WRITE_tRNS |
| | 526 | #define PNG_WRITE_tRNS_SUPPORTED |
| | 527 | #endif |
| | 528 | #ifndef PNG_NO_WRITE_zTXt |
| | 529 | #define PNG_WRITE_zTXt_SUPPORTED |
| | 530 | #endif |
| | 531 | #endif /* PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED */ |
| | 532 | |
| | 533 | /* need the time information for reading tIME chunks */ |
| | 534 | #if defined(PNG_READ_tIME_SUPPORTED) || defined(PNG_WRITE_tIME_SUPPORTED) |
| | 535 | #include <time.h> |
| | 536 | #endif |
| | 537 | |
| | 538 | /* Some typedefs to get us started. These should be safe on most of the |
| | 539 | * common platforms. The typedefs should be at least as large as the |
| | 540 | * numbers suggest (a png_uint_32 must be at least 32 bits long), but they |
| | 541 | * don't have to be exactly that size. Some compilers dislike passing |
| | 542 | * unsigned shorts as function parameters, so you may be better off using |
| | 543 | * unsigned int for png_uint_16. Likewise, for 64-bit systems, you may |
| | 544 | * want to have unsigned int for png_uint_32 instead of unsigned long. |
| | 545 | */ |
| | 546 | |
| | 547 | typedef unsigned long png_uint_32; |
| | 548 | typedef long png_int_32; |
| | 549 | typedef unsigned short png_uint_16; |
| | 550 | typedef short png_int_16; |
| | 551 | typedef unsigned char png_byte; |
| | 552 | |
| | 553 | /* This is usually size_t. It is typedef'ed just in case you need it to |
| | 554 | change (I'm not sure if you will or not, so I thought I'd be safe) */ |
| | 555 | typedef size_t png_size_t; |
| | 556 | |
| | 557 | /* The following is needed for medium model support. It cannot be in the |
| | 558 | * PNG_INTERNAL section. Needs modification for other compilers besides |
| | 559 | * MSC. Model independent support declares all arrays and pointers to be |
| | 560 | * large using the far keyword. The zlib version used must also support |
| | 561 | * model independent data. As of version zlib 1.0.4, the necessary changes |
| | 562 | * have been made in zlib. The USE_FAR_KEYWORD define triggers other |
| | 563 | * changes that are needed. (Tim Wegner) |
| | 564 | */ |
| | 565 | |
| | 566 | /* Separate compiler dependencies (problem here is that zlib.h always |
| | 567 | defines FAR. (SJT) */ |
| | 568 | #ifdef __BORLANDC__ |
| | 569 | #if defined(__LARGE__) || defined(__HUGE__) || defined(__COMPACT__) |
| | 570 | #define LDATA 1 |
| | 571 | #else |
| | 572 | #define LDATA 0 |
| | 573 | #endif |
| | 574 | |
| | 575 | #if !defined(__WIN32__) && !defined(__FLAT__) |
| | 576 | #define PNG_MAX_MALLOC_64K |
| | 577 | #if (LDATA != 1) |
| | 578 | #ifndef FAR |
| | 579 | #define FAR __far |
| | 580 | #endif |
| | 581 | #define USE_FAR_KEYWORD |
| | 582 | #endif /* LDATA != 1 */ |
| | 583 | |
| | 584 | /* Possibly useful for moving data out of default segment. |
| | 585 | * Uncomment it if you want. Could also define FARDATA as |
| | 586 | * const if your compiler supports it. (SJT) |
| | 587 | # define FARDATA FAR |
| | 588 | */ |
| | 589 | #endif /* __WIN32__, __FLAT__ */ |
| | 590 | |
| | 591 | #endif /* __BORLANDC__ */ |
| | 592 | |
| | 593 | |
| | 594 | /* Suggest testing for specific compiler first before testing for |
| | 595 | * FAR. The Watcom compiler defines both __MEDIUM__ and M_I86MM, |
| | 596 | * making reliance oncertain keywords suspect. (SJT) |
| | 597 | */ |
| | 598 | |
| | 599 | /* MSC Medium model */ |
| | 600 | #if defined(FAR) |
| | 601 | # if defined(M_I86MM) |
| | 602 | # define USE_FAR_KEYWORD |
| | 603 | # define FARDATA FAR |
| | 604 | # include <dos.h> |
| | 605 | # endif |
| | 606 | #endif |
| | 607 | |
| | 608 | /* SJT: default case */ |
| | 609 | #ifndef FAR |
| | 610 | # define FAR |
| | 611 | #endif |
| | 612 | |
| | 613 | /* At this point FAR is always defined */ |
| | 614 | #ifndef FARDATA |
| | 615 | #define FARDATA |
| | 616 | #endif |
| | 617 | |
| | 618 | /* Add typedefs for pointers */ |
| | 619 | typedef void FAR * png_voidp; |
| | 620 | typedef png_byte FAR * png_bytep; |
| | 621 | typedef png_uint_32 FAR * png_uint_32p; |
| | 622 | typedef png_int_32 FAR * png_int_32p; |
| | 623 | typedef png_uint_16 FAR * png_uint_16p; |
| | 624 | typedef png_int_16 FAR * png_int_16p; |
| | 625 | typedef PNG_CONST char FAR * png_const_charp; |
| | 626 | typedef char FAR * png_charp; |
| | 627 | typedef double FAR * png_doublep; |
| | 628 | |
| | 629 | /* Pointers to pointers; i.e. arrays */ |
| | 630 | typedef png_byte FAR * FAR * png_bytepp; |
| | 631 | typedef png_uint_32 FAR * FAR * png_uint_32pp; |
| | 632 | typedef png_int_32 FAR * FAR * png_int_32pp; |
| | 633 | typedef png_uint_16 FAR * FAR * png_uint_16pp; |
| | 634 | typedef png_int_16 FAR * FAR * png_int_16pp; |
| | 635 | typedef PNG_CONST char FAR * FAR * png_const_charpp; |
| | 636 | typedef char FAR * FAR * png_charpp; |
| | 637 | typedef double FAR * FAR * png_doublepp; |
| | 638 | |
| | 639 | /* Pointers to pointers to pointers; i.e. pointer to array */ |
| | 640 | typedef char FAR * FAR * FAR * png_charppp; |
| | 641 | |
| | 642 | /* libpng typedefs for types in zlib. If zlib changes |
| | 643 | * or another compression library is used, then change these. |
| | 644 | * Eliminates need to change all the source files. |
| | 645 | */ |
| | 646 | typedef charf * png_zcharp; |
| | 647 | typedef charf * FAR * png_zcharpp; |
| | 648 | typedef z_stream FAR * png_zstreamp; |
| | 649 | |
| | 650 | /* allow for compilation as dll under MS Windows */ |
| | 651 | #ifdef __WIN32DLL__ |
| | 652 | #define PNG_EXPORT(type,symbol) __declspec(dllexport) type symbol |
| | 653 | #endif |
| | 654 | |
| | 655 | /* allow for compilation as dll with BORLAND C++ 5.0 */ |
| | 656 | #if defined(__BORLANDC__) && defined(_Windows) && defined(__DLL__) |
| | 657 | # define PNG_EXPORT(type,symbol) type _export symbol |
| | 658 | #endif |
| | 659 | |
| | 660 | /* allow for compilation as shared lib under BeOS */ |
| | 661 | #ifdef __BEOSDLL__ |
| | 662 | #define PNG_EXPORT(type,symbol) __declspec(export) type symbol |
| | 663 | #endif |
| | 664 | |
| | 665 | #ifndef PNG_EXPORT |
| | 666 | #define PNG_EXPORT(type,symbol) type symbol |
| | 667 | #endif |
| | 668 | |
| | 669 | |
| | 670 | /* User may want to use these so not in PNG_INTERNAL. Any library functions |
| | 671 | * that are passed far data must be model independent. |
| | 672 | */ |
| | 673 | |
| | 674 | #if defined(USE_FAR_KEYWORD) /* memory model independent fns */ |
| | 675 | /* use this to make far-to-near assignments */ |
| | 676 | # define CHECK 1 |
| | 677 | # define NOCHECK 0 |
| | 678 | # define CVT_PTR(ptr) (png_far_to_near(png_ptr,ptr,CHECK)) |
| | 679 | # define CVT_PTR_NOCHECK(ptr) (png_far_to_near(png_ptr,ptr,NOCHECK)) |
| | 680 | # define png_strcpy _fstrcpy |
| | 681 | # define png_strlen _fstrlen |
| | 682 | # define png_memcmp _fmemcmp /* SJT: added */ |
| | 683 | # define png_memcpy _fmemcpy |
| | 684 | # define png_memset _fmemset |
| | 685 | #else /* use the usual functions */ |
| | 686 | # define CVT_PTR(ptr) (ptr) |
| | 687 | # define CVT_PTR_NOCHECK(ptr) (ptr) |
| | 688 | # define png_strcpy strcpy |
| | 689 | # define png_strlen strlen |
| | 690 | # define png_memcmp memcmp /* SJT: added */ |
| | 691 | # define png_memcpy memcpy |
| | 692 | # define png_memset memset |
| | 693 | #endif |
| | 694 | /* End of memory model independent support */ |
| | 695 | |
| | 696 | /* Just a double check that someone hasn't tried to define something |
| | 697 | * contradictory. |
| | 698 | */ |
| | 699 | #if (PNG_ZBUF_SIZE > 65536) && defined(PNG_MAX_MALLOC_64K) |
| | 700 | #undef PNG_ZBUF_SIZE |
| | 701 | #define PNG_ZBUF_SIZE 65536 |
| | 702 | #endif |
| | 703 | |
| | 704 | #endif /* PNGCONF_H */ |
| | 705 | |
projects / wxWidgets.git / blame_incremental