Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 1 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 2 | /* pngpriv.h - private declarations for use inside libpng |
Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 3 | * |
Glenn Randers-Pehrson | aa4e359 | 2010-07-06 07:40:47 -0500 | [diff] [blame^] | 4 | * libpng version 1.5.0beta33 - July 6, 2010 |
Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 5 | * For conditions of distribution and use, see copyright notice in png.h |
Glenn Randers-Pehrson | e69b55d | 2010-01-01 10:29:06 -0600 | [diff] [blame] | 6 | * Copyright (c) 1998-2010 Glenn Randers-Pehrson |
Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 7 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) |
| 8 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) |
Glenn Randers-Pehrson | 3e61d79 | 2009-06-24 09:31:28 -0500 | [diff] [blame] | 9 | * |
Glenn Randers-Pehrson | bfbf865 | 2009-06-26 21:46:52 -0500 | [diff] [blame] | 10 | * This code is released under the libpng license. |
Glenn Randers-Pehrson | c332bbc | 2009-06-25 13:43:50 -0500 | [diff] [blame] | 11 | * For conditions of distribution and use, see the disclaimer |
Glenn Randers-Pehrson | 037023b | 2009-06-24 10:27:36 -0500 | [diff] [blame] | 12 | * and license in png.h |
Glenn Randers-Pehrson | d60b8fa | 2006-04-20 21:31:14 -0500 | [diff] [blame] | 13 | */ |
| 14 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 15 | /* The symbols declared in this file (including the functions declared |
| 16 | * as PNG_EXTERN) are PRIVATE. They are not part of the libpng public |
| 17 | * interface, and are not recommended for use by regular applications. |
| 18 | * Some of them may become public in the future; others may stay private, |
| 19 | * change in an incompatible way, or even disappear. |
| 20 | * Although the libpng users are not forbidden to include this header, |
| 21 | * they should be well aware of the issues that may arise from doing so. |
| 22 | */ |
| 23 | |
| 24 | #ifndef PNGPRIV_H |
| 25 | #define PNGPRIV_H |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 26 | |
Glenn Randers-Pehrson | eae8e36 | 2010-03-12 17:36:53 -0600 | [diff] [blame] | 27 | #define PNGLIB_BUILD |
Glenn Randers-Pehrson | aecef09 | 2010-04-17 18:03:02 -0500 | [diff] [blame] | 28 | #ifdef PNG_USER_CONFIG |
| 29 | # include "pngusr.h" |
| 30 | #endif |
Glenn Randers-Pehrson | c3cd22b | 2010-03-08 21:10:25 -0600 | [diff] [blame] | 31 | #include "png.h" |
| 32 | #include "pnginfo.h" |
| 33 | #include "pngstruct.h" |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 34 | |
| 35 | #include <stdlib.h> |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 36 | #ifdef BSD |
| 37 | # include <strings.h> |
| 38 | #else |
| 39 | # include <string.h> |
| 40 | #endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 41 | |
Glenn Randers-Pehrson | dc6182a | 2010-03-09 16:45:06 -0600 | [diff] [blame] | 42 | /* Added at libpng-1.2.9 */ |
| 43 | /* Moved to pngpriv.h at libpng-1.5.0 */ |
| 44 | |
| 45 | /* config.h is created by and PNG_CONFIGURE_LIBPNG is set by the "configure" |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 46 | * script. We may need it here to get the correct configuration on things |
| 47 | * like limits. |
Glenn Randers-Pehrson | dc6182a | 2010-03-09 16:45:06 -0600 | [diff] [blame] | 48 | */ |
| 49 | #ifdef PNG_CONFIGURE_LIBPNG |
| 50 | # ifdef HAVE_CONFIG_H |
| 51 | # include "config.h" |
| 52 | # endif |
| 53 | #endif |
| 54 | |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 55 | /* Moved to pngpriv.h at libpng-1.5.0 */ |
| 56 | /* If you are running on a machine where you cannot allocate more |
| 57 | * than 64K of memory at once, uncomment this. While libpng will not |
| 58 | * normally need that much memory in a chunk (unless you load up a very |
| 59 | * large file), zlib needs to know how big of a chunk it can use, and |
| 60 | * libpng thus makes sure to check any memory allocation to verify it |
| 61 | * will fit into memory. |
| 62 | * |
| 63 | * zlib provides 'MAXSEG_64K' which, if defined, indicates the |
| 64 | * same limit and pngconf.h (already included) sets the limit |
| 65 | * if certain operating systems are detected. |
| 66 | */ |
| 67 | #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K) |
| 68 | # define PNG_MAX_MALLOC_64K |
| 69 | #endif |
| 70 | |
| 71 | /* Moved to pngpriv.h at libpng-1.5.0 */ |
| 72 | /* Feature support: in 1.4 this was in pngconf.h, but these |
| 73 | * features have no affect on the libpng API. Add library |
| 74 | * only features to the end of this list. Add features that |
| 75 | * affect the API to scipts/config.dfn using png_on or png_off |
| 76 | * as determined by the default and update scripts/config.std |
| 77 | */ |
| 78 | /* Added at libpng version 1.4.0 */ |
| 79 | #if !defined(PNG_NO_WARNINGS) && !defined(PNG_WARNINGS_SUPPORTED) |
| 80 | # define PNG_WARNINGS_SUPPORTED |
| 81 | #endif |
| 82 | |
Glenn Randers-Pehrson | aecef09 | 2010-04-17 18:03:02 -0500 | [diff] [blame] | 83 | /* If warnings or errors are turned off the code is disabled |
| 84 | * or redirected here. |
| 85 | */ |
| 86 | #ifndef PNG_WARNINGS_SUPPORTED |
| 87 | # define png_warning(s1,s2) ((void)0) |
| 88 | # define png_chunk_warning(s1,s2) ((void)0) |
| 89 | #endif |
| 90 | #ifndef PNG_ERROR_TEXT_SUPPORTED |
| 91 | # define png_error(s1,s2) png_err(s1) |
| 92 | # define png_chunk_error(s1,s2) png_err(s1) |
| 93 | #endif |
| 94 | |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 95 | /* Added at libpng version 1.4.0 */ |
| 96 | #if !defined(PNG_NO_CHECK_cHRM) && !defined(PNG_CHECK_cHRM_SUPPORTED) |
| 97 | # define PNG_CHECK_cHRM_SUPPORTED |
| 98 | #endif |
| 99 | |
| 100 | /* Added at libpng version 1.4.0 */ |
| 101 | #if !defined(PNG_NO_ALIGNED_MEMORY) && !defined(PNG_ALIGNED_MEMORY_SUPPORTED) |
| 102 | # define PNG_ALIGNED_MEMORY_SUPPORTED |
| 103 | #endif |
| 104 | |
| 105 | /* Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING |
| 106 | * See png[wr]util.c |
| 107 | */ |
| 108 | #if !defined(PNG_NO_POINTER_INDEXING) && \ |
| 109 | !defined(PNG_POINTER_INDEXING_SUPPORTED) |
| 110 | # define PNG_POINTER_INDEXING_SUPPORTED |
| 111 | #endif |
| 112 | |
| 113 | /* Other defines for things like memory and the like can go here. */ |
| 114 | |
Glenn Randers-Pehrson | 7253144 | 2010-04-17 08:17:51 -0500 | [diff] [blame] | 115 | /* This controls how fine the quantizing gets. As this allocates |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 116 | * a largish chunk of memory (32K), those who are not as concerned |
Glenn Randers-Pehrson | 7253144 | 2010-04-17 08:17:51 -0500 | [diff] [blame] | 117 | * with quantizing quality can decrease some or all of these. |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 118 | */ |
Glenn Randers-Pehrson | 7253144 | 2010-04-17 08:17:51 -0500 | [diff] [blame] | 119 | #ifndef PNG_QUANTIZE_RED_BITS |
| 120 | # define PNG_QUANTIZE_RED_BITS 5 |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 121 | #endif |
Glenn Randers-Pehrson | 7253144 | 2010-04-17 08:17:51 -0500 | [diff] [blame] | 122 | #ifndef PNG_QUANTIZE_GREEN_BITS |
| 123 | # define PNG_QUANTIZE_GREEN_BITS 5 |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 124 | #endif |
Glenn Randers-Pehrson | 7253144 | 2010-04-17 08:17:51 -0500 | [diff] [blame] | 125 | #ifndef PNG_QUANTIZE_BLUE_BITS |
| 126 | # define PNG_QUANTIZE_BLUE_BITS 5 |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 127 | #endif |
| 128 | |
| 129 | /* This controls how fine the gamma correction becomes when you |
| 130 | * are only interested in 8 bits anyway. Increasing this value |
| 131 | * results in more memory being used, and more pow() functions |
| 132 | * being called to fill in the gamma tables. Don't set this value |
| 133 | * less then 8, and even that may not work (I haven't tested it). |
| 134 | */ |
| 135 | #ifndef PNG_MAX_GAMMA_8 |
| 136 | # define PNG_MAX_GAMMA_8 11 |
| 137 | #endif |
| 138 | |
| 139 | /* This controls how much a difference in gamma we can tolerate before |
| 140 | * we actually start doing gamma conversion. |
| 141 | */ |
| 142 | #ifndef PNG_GAMMA_THRESHOLD |
| 143 | # define PNG_GAMMA_THRESHOLD 0.05 |
| 144 | #endif |
| 145 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 146 | /* The functions exported by PNG_EXTERN are internal functions, which |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 147 | * aren't usually used outside the library (as far as I know), so it is |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 148 | * debatable if they should be exported at all. In the future, when it |
| 149 | * is possible to have run-time registry of chunk-handling functions, |
| 150 | * some of these will be made available again. |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 151 | #define PNG_EXTERN extern |
| 152 | */ |
| 153 | #define PNG_EXTERN |
| 154 | |
| 155 | /* Other defines specific to compilers can go here. Try to keep |
| 156 | * them inside an appropriate ifdef/endif pair for portability. |
| 157 | */ |
| 158 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 159 | #ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | d00bbb2 | 2010-03-14 09:15:49 -0500 | [diff] [blame] | 160 | # if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \ |
| 161 | defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC) |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 162 | /* We need to check that <math.h> hasn't already been included earlier |
| 163 | * as it seems it doesn't agree with <fp.h>, yet we should really use |
| 164 | * <fp.h> if possible. |
| 165 | */ |
| 166 | # if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__) |
| 167 | # include <fp.h> |
| 168 | # endif |
| 169 | # else |
| 170 | # include <math.h> |
| 171 | # endif |
| 172 | # if defined(_AMIGA) && defined(__SASC) && defined(_M68881) |
| 173 | /* Amiga SAS/C: We must include builtin FPU functions when compiling using |
| 174 | * MATH=68881 |
| 175 | */ |
| 176 | # include <m68881.h> |
| 177 | # endif |
| 178 | #endif |
| 179 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 180 | /* This provides the non-ANSI (far) memory allocation routines. */ |
| 181 | #if defined(__TURBOC__) && defined(__MSDOS__) |
| 182 | # include <mem.h> |
| 183 | # include <alloc.h> |
| 184 | #endif |
| 185 | |
| 186 | #if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \ |
Glenn Randers-Pehrson | f74c5ac | 2009-09-20 07:27:34 -0500 | [diff] [blame] | 187 | defined(_WIN32) || defined(__WIN32__) |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 188 | # include <windows.h> /* defines _WINDOWS_ macro */ |
| 189 | /* I have no idea why is this necessary... */ |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 190 | # ifdef _MSC_VER |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 191 | # include <malloc.h> |
| 192 | # endif |
| 193 | #endif |
| 194 | |
Glenn Randers-Pehrson | 862cb20 | 2010-04-16 22:12:51 -0500 | [diff] [blame] | 195 | /* This is the size of the compression buffer, and thus the size of |
| 196 | * an IDAT chunk. Make this whatever size you feel is best for your |
| 197 | * machine. One of these will be allocated per png_struct. When this |
| 198 | * is full, it writes the data to the disk, and does some other |
| 199 | * calculations. Making this an extremely small size will slow |
| 200 | * the library down, but you may want to experiment to determine |
| 201 | * where it becomes significant, if you are concerned with memory |
| 202 | * usage. Note that zlib allocates at least 32Kb also. For readers, |
| 203 | * this describes the size of the buffer available to read the data in. |
| 204 | * Unless this gets smaller than the size of a row (compressed), |
| 205 | * it should not make much difference how big this is. |
| 206 | */ |
| 207 | |
| 208 | #ifndef PNG_ZBUF_SIZE |
| 209 | # define PNG_ZBUF_SIZE 8192 |
| 210 | #endif |
| 211 | |
| 212 | /* Just a little check that someone hasn't tried to define something |
| 213 | * contradictory. |
| 214 | */ |
| 215 | #if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K) |
| 216 | # undef PNG_ZBUF_SIZE |
| 217 | # define PNG_ZBUF_SIZE 65536L |
| 218 | #endif |
| 219 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 220 | /* Various modes of operation. Note that after an init, mode is set to |
| 221 | * zero automatically when the structure is created. |
| 222 | */ |
| 223 | #define PNG_HAVE_IHDR 0x01 |
| 224 | #define PNG_HAVE_PLTE 0x02 |
| 225 | #define PNG_HAVE_IDAT 0x04 |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 226 | #define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 227 | #define PNG_HAVE_IEND 0x10 |
| 228 | #define PNG_HAVE_gAMA 0x20 |
| 229 | #define PNG_HAVE_cHRM 0x40 |
| 230 | #define PNG_HAVE_sRGB 0x80 |
| 231 | #define PNG_HAVE_CHUNK_HEADER 0x100 |
| 232 | #define PNG_WROTE_tIME 0x200 |
| 233 | #define PNG_WROTE_INFO_BEFORE_PLTE 0x400 |
| 234 | #define PNG_BACKGROUND_IS_GRAY 0x800 |
| 235 | #define PNG_HAVE_PNG_SIGNATURE 0x1000 |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 236 | #define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 237 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 238 | /* Flags for the transformations the PNG library does on the image data */ |
Glenn Randers-Pehrson | 1916f6a | 2008-08-14 13:44:49 -0500 | [diff] [blame] | 239 | #define PNG_BGR 0x0001 |
| 240 | #define PNG_INTERLACE 0x0002 |
| 241 | #define PNG_PACK 0x0004 |
| 242 | #define PNG_SHIFT 0x0008 |
| 243 | #define PNG_SWAP_BYTES 0x0010 |
| 244 | #define PNG_INVERT_MONO 0x0020 |
Glenn Randers-Pehrson | 3cd7cff | 2010-04-16 19:27:08 -0500 | [diff] [blame] | 245 | #define PNG_QUANTIZE 0x0040 |
Glenn Randers-Pehrson | 1916f6a | 2008-08-14 13:44:49 -0500 | [diff] [blame] | 246 | #define PNG_BACKGROUND 0x0080 |
| 247 | #define PNG_BACKGROUND_EXPAND 0x0100 |
| 248 | /* 0x0200 unused */ |
| 249 | #define PNG_16_TO_8 0x0400 |
| 250 | #define PNG_RGBA 0x0800 |
| 251 | #define PNG_EXPAND 0x1000 |
| 252 | #define PNG_GAMMA 0x2000 |
| 253 | #define PNG_GRAY_TO_RGB 0x4000 |
| 254 | #define PNG_FILLER 0x8000L |
| 255 | #define PNG_PACKSWAP 0x10000L |
| 256 | #define PNG_SWAP_ALPHA 0x20000L |
| 257 | #define PNG_STRIP_ALPHA 0x40000L |
| 258 | #define PNG_INVERT_ALPHA 0x80000L |
| 259 | #define PNG_USER_TRANSFORM 0x100000L |
| 260 | #define PNG_RGB_TO_GRAY_ERR 0x200000L |
| 261 | #define PNG_RGB_TO_GRAY_WARN 0x400000L |
| 262 | #define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */ |
| 263 | /* 0x800000L Unused */ |
| 264 | #define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */ |
| 265 | #define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */ |
Glenn Randers-Pehrson | 5876b85 | 2009-11-27 00:24:42 -0600 | [diff] [blame] | 266 | /* 0x4000000L unused */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 267 | /* 0x8000000L unused */ |
| 268 | /* 0x10000000L unused */ |
| 269 | /* 0x20000000L unused */ |
| 270 | /* 0x40000000L unused */ |
| 271 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 272 | /* Flags for png_create_struct */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 273 | #define PNG_STRUCT_PNG 0x0001 |
| 274 | #define PNG_STRUCT_INFO 0x0002 |
| 275 | |
| 276 | /* Scaling factor for filter heuristic weighting calculations */ |
| 277 | #define PNG_WEIGHT_SHIFT 8 |
| 278 | #define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT)) |
| 279 | #define PNG_COST_SHIFT 3 |
| 280 | #define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT)) |
| 281 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 282 | /* Flags for the png_ptr->flags rather than declaring a byte for each one */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 283 | #define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001 |
| 284 | #define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002 |
| 285 | #define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004 |
| 286 | #define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008 |
| 287 | #define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010 |
| 288 | #define PNG_FLAG_ZLIB_FINISHED 0x0020 |
| 289 | #define PNG_FLAG_ROW_INIT 0x0040 |
| 290 | #define PNG_FLAG_FILLER_AFTER 0x0080 |
| 291 | #define PNG_FLAG_CRC_ANCILLARY_USE 0x0100 |
| 292 | #define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200 |
| 293 | #define PNG_FLAG_CRC_CRITICAL_USE 0x0400 |
| 294 | #define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800 |
Glenn Randers-Pehrson | f74c5ac | 2009-09-20 07:27:34 -0500 | [diff] [blame] | 295 | /* 0x1000 unused */ |
| 296 | /* 0x2000 unused */ |
| 297 | /* 0x4000 unused */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 298 | #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L |
| 299 | #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L |
| 300 | #define PNG_FLAG_LIBRARY_MISMATCH 0x20000L |
| 301 | #define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L |
| 302 | #define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L |
| 303 | #define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L |
| 304 | #define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */ |
| 305 | #define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */ |
Glenn Randers-Pehrson | 6bc53be | 2006-06-16 07:52:03 -0500 | [diff] [blame] | 306 | #define PNG_FLAG_BENIGN_ERRORS_WARN 0x800000L /* Added to libpng-1.4.0 */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 307 | /* 0x1000000L unused */ |
| 308 | /* 0x2000000L unused */ |
| 309 | /* 0x4000000L unused */ |
| 310 | /* 0x8000000L unused */ |
| 311 | /* 0x10000000L unused */ |
| 312 | /* 0x20000000L unused */ |
| 313 | /* 0x40000000L unused */ |
| 314 | |
| 315 | #define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \ |
| 316 | PNG_FLAG_CRC_ANCILLARY_NOWARN) |
| 317 | |
| 318 | #define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \ |
| 319 | PNG_FLAG_CRC_CRITICAL_IGNORE) |
| 320 | |
| 321 | #define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \ |
| 322 | PNG_FLAG_CRC_CRITICAL_MASK) |
| 323 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 324 | /* Save typing and make code easier to understand */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 325 | |
| 326 | #define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ |
| 327 | abs((int)((c1).green) - (int)((c2).green)) + \ |
| 328 | abs((int)((c1).blue) - (int)((c2).blue))) |
| 329 | |
| 330 | /* Added to libpng-1.2.6 JB */ |
| 331 | #define PNG_ROWBYTES(pixel_bits, width) \ |
| 332 | ((pixel_bits) >= 8 ? \ |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 333 | ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \ |
| 334 | (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) ) |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 335 | |
| 336 | /* PNG_OUT_OF_RANGE returns true if value is outside the range |
Glenn Randers-Pehrson | 9bf6083 | 2009-09-20 13:37:50 -0500 | [diff] [blame] | 337 | * ideal-delta..ideal+delta. Each argument is evaluated twice. |
| 338 | * "ideal" and "delta" should be constants, normally simple |
| 339 | * integers, "value" a variable. Added to libpng-1.2.6 JB |
| 340 | */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 341 | #define PNG_OUT_OF_RANGE(value, ideal, delta) \ |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 342 | ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) ) |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 343 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 344 | /* Constant strings for known chunk types. If you need to add a chunk, |
Glenn Randers-Pehrson | 9bf6083 | 2009-09-20 13:37:50 -0500 | [diff] [blame] | 345 | * define the name here, and add an invocation of the macro wherever it's |
| 346 | * needed. |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 347 | */ |
Glenn Randers-Pehrson | 9bf6083 | 2009-09-20 13:37:50 -0500 | [diff] [blame] | 348 | #define PNG_IHDR PNG_CONST png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'} |
| 349 | #define PNG_IDAT PNG_CONST png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'} |
| 350 | #define PNG_IEND PNG_CONST png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'} |
| 351 | #define PNG_PLTE PNG_CONST png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'} |
| 352 | #define PNG_bKGD PNG_CONST png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'} |
| 353 | #define PNG_cHRM PNG_CONST png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'} |
| 354 | #define PNG_gAMA PNG_CONST png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'} |
| 355 | #define PNG_hIST PNG_CONST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'} |
| 356 | #define PNG_iCCP PNG_CONST png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'} |
| 357 | #define PNG_iTXt PNG_CONST png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'} |
| 358 | #define PNG_oFFs PNG_CONST png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'} |
| 359 | #define PNG_pCAL PNG_CONST png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'} |
| 360 | #define PNG_sCAL PNG_CONST png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'} |
| 361 | #define PNG_pHYs PNG_CONST png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'} |
| 362 | #define PNG_sBIT PNG_CONST png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'} |
| 363 | #define PNG_sPLT PNG_CONST png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'} |
| 364 | #define PNG_sRGB PNG_CONST png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'} |
| 365 | #define PNG_sTER PNG_CONST png_byte png_sTER[5] = {115, 84, 69, 82, '\0'} |
| 366 | #define PNG_tEXt PNG_CONST png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'} |
| 367 | #define PNG_tIME PNG_CONST png_byte png_tIME[5] = {116, 73, 77, 69, '\0'} |
| 368 | #define PNG_tRNS PNG_CONST png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'} |
| 369 | #define PNG_zTXt PNG_CONST png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'} |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 370 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 371 | |
| 372 | /* Inhibit C++ name-mangling for libpng functions but not for system calls. */ |
| 373 | #ifdef __cplusplus |
| 374 | extern "C" { |
| 375 | #endif /* __cplusplus */ |
| 376 | |
| 377 | /* These functions are used internally in the code. They generally |
| 378 | * shouldn't be used unless you are writing code to add or replace some |
| 379 | * functionality in libpng. More information about most functions can |
| 380 | * be found in the files where the functions are located. |
| 381 | */ |
| 382 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 383 | /* Allocate memory for an internal libpng struct */ |
| 384 | PNG_EXTERN png_voidp png_create_struct PNGARG((int type)); |
| 385 | |
| 386 | /* Free memory from internal libpng struct */ |
| 387 | PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr)); |
| 388 | |
| 389 | PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 390 | malloc_fn, png_voidp mem_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 391 | PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 392 | png_free_ptr free_fn, png_voidp mem_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 393 | |
| 394 | /* Free any memory that info_ptr points to and reset struct. */ |
| 395 | PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 396 | png_infop info_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 397 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 398 | /* Function to allocate memory for zlib. PNGAPI is disallowed. */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 399 | PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, uInt size)); |
| 400 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 401 | /* Function to free memory for zlib. PNGAPI is disallowed. */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 402 | PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr)); |
| 403 | |
Glenn Randers-Pehrson | eae8e36 | 2010-03-12 17:36:53 -0600 | [diff] [blame] | 404 | /* Next four functions are used internally as callbacks. PNGCBAPI is required |
| 405 | * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to PNGCBAPI |
| 406 | * at 1.5.0 |
| 407 | */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 408 | |
Glenn Randers-Pehrson | eae8e36 | 2010-03-12 17:36:53 -0600 | [diff] [blame] | 409 | PNG_EXTERN void PNGCBAPI png_default_read_data PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 410 | png_bytep data, png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 411 | |
| 412 | #ifdef PNG_PROGRESSIVE_READ_SUPPORTED |
Glenn Randers-Pehrson | eae8e36 | 2010-03-12 17:36:53 -0600 | [diff] [blame] | 413 | PNG_EXTERN void PNGCBAPI png_push_fill_buffer PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 414 | png_bytep buffer, png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 415 | #endif |
| 416 | |
Glenn Randers-Pehrson | eae8e36 | 2010-03-12 17:36:53 -0600 | [diff] [blame] | 417 | PNG_EXTERN void PNGCBAPI png_default_write_data PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 418 | png_bytep data, png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 419 | |
Glenn Randers-Pehrson | dbd4014 | 2009-08-31 08:42:02 -0500 | [diff] [blame] | 420 | #ifdef PNG_WRITE_FLUSH_SUPPORTED |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 421 | # ifdef PNG_STDIO_SUPPORTED |
Glenn Randers-Pehrson | eae8e36 | 2010-03-12 17:36:53 -0600 | [diff] [blame] | 422 | PNG_EXTERN void PNGCBAPI png_default_flush PNGARG((png_structp png_ptr)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 423 | # endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 424 | #endif |
| 425 | |
| 426 | /* Reset the CRC variable */ |
| 427 | PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr)); |
| 428 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 429 | /* Write the "data" buffer to whatever output you are using */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 430 | PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 431 | png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 432 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 433 | /* Read the chunk header (length + type name) */ |
| 434 | PNG_EXTERN png_uint_32 png_read_chunk_header PNGARG((png_structp png_ptr)); |
| 435 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 436 | /* Read data from whatever input you are using into the "data" buffer */ |
| 437 | PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 438 | png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 439 | |
| 440 | /* Read bytes into buf, and update png_ptr->crc */ |
| 441 | PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 442 | png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 443 | |
| 444 | /* Decompress data in a chunk that uses compression */ |
| 445 | #if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \ |
| 446 | defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) |
Glenn Randers-Pehrson | 895a9c9 | 2008-07-25 08:51:18 -0500 | [diff] [blame] | 447 | PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 448 | int comp_type, png_size_t chunklength, png_size_t prefix_length, |
| 449 | png_size_t *data_length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 450 | #endif |
| 451 | |
| 452 | /* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ |
| 453 | PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip)); |
| 454 | |
| 455 | /* Read the CRC from the file and compare it to the libpng calculated CRC */ |
| 456 | PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr)); |
| 457 | |
| 458 | /* Calculate the CRC over a section of data. Note that we are only |
| 459 | * passing a maximum of 64K on systems that have this as a memory limit, |
| 460 | * since this is the maximum buffer size we can specify. |
| 461 | */ |
| 462 | PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 463 | png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 464 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 465 | #ifdef PNG_WRITE_FLUSH_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 466 | PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)); |
| 467 | #endif |
| 468 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 469 | /* Write various chunks */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 470 | |
| 471 | /* Write the IHDR chunk, and update the png_struct with the necessary |
| 472 | * information. |
| 473 | */ |
| 474 | PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 475 | png_uint_32 height, |
| 476 | int bit_depth, int color_type, int compression_method, int filter_method, |
| 477 | int interlace_method)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 478 | |
| 479 | PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 480 | png_uint_32 num_pal)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 481 | |
| 482 | PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 483 | png_size_t length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 484 | |
| 485 | PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr)); |
| 486 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 487 | #ifdef PNG_WRITE_gAMA_SUPPORTED |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 488 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 489 | PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 490 | # endif |
| 491 | # ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 492 | PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, |
| 493 | png_fixed_point file_gamma)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 494 | # endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 495 | #endif |
| 496 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 497 | #ifdef PNG_WRITE_sBIT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 498 | PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 499 | int color_type)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 500 | #endif |
| 501 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 502 | #ifdef PNG_WRITE_cHRM_SUPPORTED |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 503 | # ifdef PNG_FLOATING_POINT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 504 | PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 505 | double white_x, double white_y, |
| 506 | double red_x, double red_y, double green_x, double green_y, |
| 507 | double blue_x, double blue_y)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 508 | # endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 509 | PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 510 | png_fixed_point int_white_x, png_fixed_point int_white_y, |
| 511 | png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point |
| 512 | int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, |
| 513 | png_fixed_point int_blue_y)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 514 | #endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 515 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 516 | #ifdef PNG_WRITE_sRGB_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 517 | PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 518 | int intent)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 519 | #endif |
| 520 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 521 | #ifdef PNG_WRITE_iCCP_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 522 | PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 523 | png_charp name, int compression_type, |
| 524 | png_charp profile, int proflen)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 525 | /* Note to maintainer: profile should be png_bytep */ |
| 526 | #endif |
| 527 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 528 | #ifdef PNG_WRITE_sPLT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 529 | PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 530 | png_sPLT_tp palette)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 531 | #endif |
| 532 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 533 | #ifdef PNG_WRITE_tRNS_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 534 | PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 535 | png_color_16p values, int number, int color_type)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 536 | #endif |
| 537 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 538 | #ifdef PNG_WRITE_bKGD_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 539 | PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 540 | png_color_16p values, int color_type)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 541 | #endif |
| 542 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 543 | #ifdef PNG_WRITE_hIST_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 544 | PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 545 | int num_hist)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 546 | #endif |
| 547 | |
| 548 | #if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \ |
| 549 | defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) |
| 550 | PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 551 | png_charp key, png_charpp new_key)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 552 | #endif |
| 553 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 554 | #ifdef PNG_WRITE_tEXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 555 | PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 556 | png_charp text, png_size_t text_len)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 557 | #endif |
| 558 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 559 | #ifdef PNG_WRITE_zTXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 560 | PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 561 | png_charp text, png_size_t text_len, int compression)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 562 | #endif |
| 563 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 564 | #ifdef PNG_WRITE_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 565 | PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 566 | int compression, png_charp key, png_charp lang, png_charp lang_key, |
| 567 | png_charp text)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 568 | #endif |
| 569 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 570 | #ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 571 | PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 572 | png_infop info_ptr, png_textp text_ptr, int num_text)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 573 | #endif |
| 574 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 575 | #ifdef PNG_WRITE_oFFs_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 576 | PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 577 | png_int_32 x_offset, png_int_32 y_offset, int unit_type)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 578 | #endif |
| 579 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 580 | #ifdef PNG_WRITE_pCAL_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 581 | PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 582 | png_int_32 X0, png_int_32 X1, int type, int nparams, |
| 583 | png_charp units, png_charpp params)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 584 | #endif |
| 585 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 586 | #ifdef PNG_WRITE_pHYs_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 587 | PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 588 | png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, |
| 589 | int unit_type)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 590 | #endif |
| 591 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 592 | #ifdef PNG_WRITE_tIME_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 593 | PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 594 | png_timep mod_time)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 595 | #endif |
| 596 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 597 | #ifdef PNG_WRITE_sCAL_SUPPORTED |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 598 | # if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_STDIO_SUPPORTED) |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 599 | PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 600 | int unit, double width, double height)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 601 | # else |
| 602 | # ifdef PNG_FIXED_POINT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 603 | PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 604 | int unit, png_charp width, png_charp height)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 605 | # endif |
| 606 | # endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 607 | #endif |
| 608 | |
| 609 | /* Called when finished processing a row of data */ |
| 610 | PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr)); |
| 611 | |
| 612 | /* Internal use only. Called before first row of data */ |
| 613 | PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr)); |
| 614 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 615 | #ifdef PNG_READ_GAMMA_SUPPORTED |
Glenn Randers-Pehrson | ffa8924 | 2009-12-13 08:14:40 -0600 | [diff] [blame] | 616 | PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 617 | png_byte bit_depth)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 618 | #endif |
| 619 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 620 | /* Combine a row of data, dealing with alpha, etc. if requested */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 621 | PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 622 | int mask)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 623 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 624 | #ifdef PNG_READ_INTERLACING_SUPPORTED |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 625 | /* Expand an interlaced row */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 626 | /* OLD pre-1.0.9 interface: |
| 627 | PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 628 | png_bytep row, int pass, png_uint_32 transformations)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 629 | */ |
| 630 | PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr)); |
| 631 | #endif |
| 632 | |
| 633 | /* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ |
| 634 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 635 | #ifdef PNG_WRITE_INTERLACING_SUPPORTED |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 636 | /* Grab pixels out of a row for an interlaced pass */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 637 | PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 638 | png_bytep row, int pass)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 639 | #endif |
| 640 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 641 | /* Unfilter a row */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 642 | PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 643 | png_row_infop row_info, png_bytep row, png_bytep prev_row, int filter)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 644 | |
| 645 | /* Choose the best filter to use and filter the row data */ |
| 646 | PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 647 | png_row_infop row_info)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 648 | |
| 649 | /* Write out the filtered row. */ |
| 650 | PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 651 | png_bytep filtered_row)); |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 652 | /* Finish a row while reading, dealing with interlacing passes, etc. */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 653 | PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr)); |
| 654 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 655 | /* Initialize the row buffers, etc. */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 656 | PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr)); |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 657 | /* Optional call to update the users info structure */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 658 | PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 659 | png_infop info_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 660 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 661 | /* These are the functions that do the transformations */ |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 662 | #ifdef PNG_READ_FILLER_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 663 | PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 664 | png_bytep row, png_uint_32 filler, png_uint_32 flags)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 665 | #endif |
| 666 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 667 | #ifdef PNG_READ_SWAP_ALPHA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 668 | PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 669 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 670 | #endif |
| 671 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 672 | #ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 673 | PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 674 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 675 | #endif |
| 676 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 677 | #ifdef PNG_READ_INVERT_ALPHA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 678 | PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 679 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 680 | #endif |
| 681 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 682 | #ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 683 | PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 684 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 685 | #endif |
| 686 | |
| 687 | #if defined(PNG_WRITE_FILLER_SUPPORTED) || \ |
| 688 | defined(PNG_READ_STRIP_ALPHA_SUPPORTED) |
| 689 | PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 690 | png_bytep row, png_uint_32 flags)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 691 | #endif |
| 692 | |
| 693 | #if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) |
| 694 | PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, png_bytep row)); |
| 695 | #endif |
| 696 | |
Glenn Randers-Pehrson | e3f3c4e | 2010-02-07 18:08:50 -0600 | [diff] [blame] | 697 | #if defined(PNG_READ_PACKSWAP_SUPPORTED) || \ |
| 698 | defined(PNG_WRITE_PACKSWAP_SUPPORTED) |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 699 | PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, png_bytep row)); |
| 700 | #endif |
| 701 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 702 | #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 703 | PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 704 | row_info, png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 705 | #endif |
| 706 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 707 | #ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 708 | PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 709 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 710 | #endif |
| 711 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 712 | #ifdef PNG_READ_PACK_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 713 | PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, png_bytep row)); |
| 714 | #endif |
| 715 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 716 | #ifdef PNG_READ_SHIFT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 717 | PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 718 | png_color_8p sig_bits)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 719 | #endif |
| 720 | |
| 721 | #if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) |
| 722 | PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, png_bytep row)); |
| 723 | #endif |
| 724 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 725 | #ifdef PNG_READ_16_TO_8_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 726 | PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, png_bytep row)); |
| 727 | #endif |
| 728 | |
Glenn Randers-Pehrson | 3cd7cff | 2010-04-16 19:27:08 -0500 | [diff] [blame] | 729 | #ifdef PNG_READ_QUANTIZE_SUPPORTED |
| 730 | PNG_EXTERN void png_do_quantize PNGARG((png_row_infop row_info, |
| 731 | png_bytep row, png_bytep palette_lookup, png_bytep quantize_lookup)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 732 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 733 | # ifdef PNG_CORRECT_PALETTE_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 734 | PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 735 | png_colorp palette, int num_palette)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 736 | # endif |
| 737 | #endif |
| 738 | |
| 739 | #if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) |
| 740 | PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, png_bytep row)); |
| 741 | #endif |
| 742 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 743 | #ifdef PNG_WRITE_PACK_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 744 | PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info, |
| 745 | png_bytep row, png_uint_32 bit_depth)); |
| 746 | #endif |
| 747 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 748 | #ifdef PNG_WRITE_SHIFT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 749 | PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 750 | png_color_8p bit_depth)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 751 | #endif |
| 752 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 753 | #ifdef PNG_READ_BACKGROUND_SUPPORTED |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 754 | # ifdef PNG_READ_GAMMA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 755 | PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 756 | png_color_16p trans_color, png_color_16p background, |
| 757 | png_color_16p background_1, |
| 758 | png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, |
| 759 | png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, |
| 760 | png_uint_16pp gamma_16_to_1, int gamma_shift)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 761 | # else |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 762 | PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 763 | png_color_16p trans_color, png_color_16p background)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 764 | # endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 765 | #endif |
| 766 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 767 | #ifdef PNG_READ_GAMMA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 768 | PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 769 | png_bytep gamma_table, png_uint_16pp gamma_16_table, |
| 770 | int gamma_shift)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 771 | #endif |
| 772 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 773 | #ifdef PNG_READ_EXPAND_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 774 | PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 775 | png_bytep row, png_colorp palette, png_bytep trans, int num_trans)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 776 | PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 777 | png_bytep row, png_color_16p trans_value)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 778 | #endif |
| 779 | |
| 780 | /* The following decodes the appropriate chunks, and does error correction, |
| 781 | * then calls the appropriate callback for the chunk if it is valid. |
| 782 | */ |
| 783 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 784 | /* Decode the IHDR chunk */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 785 | PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 786 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 787 | PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 788 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 789 | PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 790 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 791 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 792 | #ifdef PNG_READ_bKGD_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 793 | PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 794 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 795 | #endif |
| 796 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 797 | #ifdef PNG_READ_cHRM_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 798 | PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 799 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 800 | #endif |
| 801 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 802 | #ifdef PNG_READ_gAMA_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 803 | PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 804 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 805 | #endif |
| 806 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 807 | #ifdef PNG_READ_hIST_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 808 | PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 809 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 810 | #endif |
| 811 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 812 | #ifdef PNG_READ_iCCP_SUPPORTED |
Glenn Randers-Pehrson | aa4e359 | 2010-07-06 07:40:47 -0500 | [diff] [blame^] | 813 | PNG_EXTERN void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 814 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 815 | #endif /* PNG_READ_iCCP_SUPPORTED */ |
| 816 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 817 | #ifdef PNG_READ_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 818 | PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 819 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 820 | #endif |
| 821 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 822 | #ifdef PNG_READ_oFFs_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 823 | PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 824 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 825 | #endif |
| 826 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 827 | #ifdef PNG_READ_pCAL_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 828 | PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 829 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 830 | #endif |
| 831 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 832 | #ifdef PNG_READ_pHYs_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 833 | PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 834 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 835 | #endif |
| 836 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 837 | #ifdef PNG_READ_sBIT_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 838 | PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 839 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 840 | #endif |
| 841 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 842 | #ifdef PNG_READ_sCAL_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 843 | PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 844 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 845 | #endif |
| 846 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 847 | #ifdef PNG_READ_sPLT_SUPPORTED |
Glenn Randers-Pehrson | aa4e359 | 2010-07-06 07:40:47 -0500 | [diff] [blame^] | 848 | PNG_EXTERN void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 849 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 850 | #endif /* PNG_READ_sPLT_SUPPORTED */ |
| 851 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 852 | #ifdef PNG_READ_sRGB_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 853 | PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 854 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 855 | #endif |
| 856 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 857 | #ifdef PNG_READ_tEXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 858 | PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 859 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 860 | #endif |
| 861 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 862 | #ifdef PNG_READ_tIME_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 863 | PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 864 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 865 | #endif |
| 866 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 867 | #ifdef PNG_READ_tRNS_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 868 | PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 869 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 870 | #endif |
| 871 | |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 872 | #ifdef PNG_READ_zTXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 873 | PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 874 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 875 | #endif |
| 876 | |
| 877 | PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 878 | png_infop info_ptr, png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 879 | |
| 880 | PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 881 | png_bytep chunk_name)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 882 | |
Glenn Randers-Pehrson | 6c7a09a | 2009-06-15 21:57:39 -0500 | [diff] [blame] | 883 | /* Handle the transformations for reading and writing */ |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 884 | PNG_EXTERN void png_do_read_transformations PNGARG((png_structp png_ptr)); |
| 885 | PNG_EXTERN void png_do_write_transformations PNGARG((png_structp png_ptr)); |
| 886 | |
| 887 | PNG_EXTERN void png_init_read_transformations PNGARG((png_structp png_ptr)); |
| 888 | |
| 889 | #ifdef PNG_PROGRESSIVE_READ_SUPPORTED |
| 890 | PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 891 | png_infop info_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 892 | PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 893 | png_infop info_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 894 | PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr)); |
| 895 | PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 896 | png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 897 | PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr)); |
| 898 | PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr)); |
| 899 | PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 900 | png_bytep buffer, png_size_t buffer_length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 901 | PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr)); |
| 902 | PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 903 | png_bytep buffer, png_size_t buffer_length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 904 | PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr)); |
| 905 | PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr, |
| 906 | png_infop info_ptr, png_uint_32 length)); |
| 907 | PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr, |
| 908 | png_infop info_ptr)); |
| 909 | PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr, |
| 910 | png_infop info_ptr)); |
| 911 | PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, png_bytep row)); |
| 912 | PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 913 | png_infop info_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 914 | PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 915 | png_infop info_ptr)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 916 | PNG_EXTERN void png_read_push_finish_row PNGARG((png_structp png_ptr)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 917 | # ifdef PNG_READ_tEXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 918 | PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 919 | png_infop info_ptr, png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 920 | PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 921 | png_infop info_ptr)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 922 | # endif |
| 923 | # ifdef PNG_READ_zTXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 924 | PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 925 | png_infop info_ptr, png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 926 | PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 927 | png_infop info_ptr)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 928 | # endif |
| 929 | # ifdef PNG_READ_iTXt_SUPPORTED |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 930 | PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 931 | png_infop info_ptr, png_uint_32 length)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 932 | PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 933 | png_infop info_ptr)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 934 | # endif |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 935 | |
| 936 | #endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ |
| 937 | |
| 938 | #ifdef PNG_MNG_FEATURES_SUPPORTED |
| 939 | PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 940 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 941 | PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 942 | png_bytep row)); |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 943 | #endif |
| 944 | |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 945 | /* Added at libpng version 1.4.0 */ |
Glenn Randers-Pehrson | 4e6b5e9 | 2009-09-23 10:24:53 -0500 | [diff] [blame] | 946 | #ifdef PNG_cHRM_SUPPORTED |
Glenn Randers-Pehrson | 134bbe4 | 2009-09-24 18:10:49 -0500 | [diff] [blame] | 947 | PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 948 | png_fixed_point int_white_x, png_fixed_point int_white_y, |
| 949 | png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point |
| 950 | int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, |
| 951 | png_fixed_point int_blue_y)); |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 952 | #endif |
Glenn Randers-Pehrson | f783101 | 2008-11-13 06:05:13 -0600 | [diff] [blame] | 953 | |
Glenn Randers-Pehrson | 7ec330d | 2009-09-25 11:45:42 -0500 | [diff] [blame] | 954 | #ifdef PNG_cHRM_SUPPORTED |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 955 | # ifdef PNG_CHECK_cHRM_SUPPORTED |
Glenn Randers-Pehrson | 7ec330d | 2009-09-25 11:45:42 -0500 | [diff] [blame] | 956 | /* Added at libpng version 1.2.34 and 1.4.0 */ |
| 957 | PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 958 | unsigned long *hi_product, unsigned long *lo_product)); |
Glenn Randers-Pehrson | d4df36c | 2010-03-06 10:45:55 -0600 | [diff] [blame] | 959 | # endif |
Glenn Randers-Pehrson | 7ec330d | 2009-09-25 11:45:42 -0500 | [diff] [blame] | 960 | #endif |
| 961 | |
Glenn Randers-Pehrson | 134bbe4 | 2009-09-24 18:10:49 -0500 | [diff] [blame] | 962 | /* Added at libpng version 1.4.0 */ |
| 963 | PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 964 | png_uint_32 width, png_uint_32 height, int bit_depth, |
| 965 | int color_type, int interlace_type, int compression_type, |
| 966 | int filter_type)); |
Glenn Randers-Pehrson | 134bbe4 | 2009-09-24 18:10:49 -0500 | [diff] [blame] | 967 | |
Glenn Randers-Pehrson | d29033f | 2009-11-07 10:46:42 -0600 | [diff] [blame] | 968 | /* Free all memory used by the read (old method - NOT DLL EXPORTED) */ |
Glenn Randers-Pehrson | aa4e359 | 2010-07-06 07:40:47 -0500 | [diff] [blame^] | 969 | PNG_EXTERN void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 970 | png_infop end_info_ptr)); |
Glenn Randers-Pehrson | d29033f | 2009-11-07 10:46:42 -0600 | [diff] [blame] | 971 | |
| 972 | /* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ |
Glenn Randers-Pehrson | aa4e359 | 2010-07-06 07:40:47 -0500 | [diff] [blame^] | 973 | PNG_EXTERN void png_write_destroy PNGARG((png_structp png_ptr)); |
Glenn Randers-Pehrson | d29033f | 2009-11-07 10:46:42 -0600 | [diff] [blame] | 974 | |
| 975 | #ifdef USE_FAR_KEYWORD /* memory model conversion function */ |
Glenn Randers-Pehrson | aa4e359 | 2010-07-06 07:40:47 -0500 | [diff] [blame^] | 976 | PNG_EXTERN void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr, |
Glenn Randers-Pehrson | e8b1aa0 | 2010-03-06 11:39:29 -0600 | [diff] [blame] | 977 | int check)); |
Glenn Randers-Pehrson | d29033f | 2009-11-07 10:46:42 -0600 | [diff] [blame] | 978 | #endif /* USE_FAR_KEYWORD */ |
| 979 | |
Glenn Randers-Pehrson | c3cd22b | 2010-03-08 21:10:25 -0600 | [diff] [blame] | 980 | #include "pngdebug.h" |
Glenn Randers-Pehrson | d29033f | 2009-11-07 10:46:42 -0600 | [diff] [blame] | 981 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 982 | /* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */ |
| 983 | |
Glenn Randers-Pehrson | 1721829 | 2006-04-20 07:20:46 -0500 | [diff] [blame] | 984 | #ifdef __cplusplus |
| 985 | } |
| 986 | #endif |
| 987 | |
Glenn Randers-Pehrson | beb572e | 2006-08-19 13:59:24 -0500 | [diff] [blame] | 988 | #endif /* PNGPRIV_H */ |