15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png.h - header file for PNG reference library 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng version 1.2.45 - July 7, 2011 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 1998-2011 Glenn Randers-Pehrson 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This code is released under the libpng license (See LICENSE, below) 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Authors and maintainers: 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 0.97, January 1998, through 1.2.45 - July 7, 2011: Glenn 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * See also "Contributing Authors", below. 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Note about libpng version numbers: 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Due to various miscommunications, unforeseen code incompatibilities 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and occasional factors outside the authors' control, version numbering 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * on the library has not always been consistent and straightforward. 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The following table summarizes matters since version 0.89c, which was 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the first widely used release: 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * source png.h png.h shared-lib 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * version string int version 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ------- ------ ----- ---------- 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.89c "1.0 beta 3" 0.89 89 1.0.89 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90] 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95] 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96] 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97] 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.97c 0.97 97 2.0.97 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.98 0.98 98 2.0.98 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.99 0.99 98 2.0.99 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0.99a-m 0.99 99 2.0.99 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.00 1.00 100 2.1.0 [100 should be 10000] 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000] 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.1 png.h string is 10001 2.1.0 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.1a-e identical to the 10002 from here on, the shared library 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.2 source version) 10002 is 2.V where V is the source code 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.2a-b 10003 version, except as noted. 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.3 10003 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.3a-d 10004 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.4 10004 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.4a-f 10005 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.5 (+ 2 patches) 10005 475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.5a-d 10006 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.5e-r 10100 (not source compatible) 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.5s-v 10006 (not binary compatible) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.6 (+ 3 patches) 10006 (still binary incompatible) 515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.6d-f 10007 (still binary incompatible) 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.6g 10007 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.6h 10007 10.6h (testing xy.z so-numbering) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.6i 10007 10.6i 555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0) 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible) 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible) 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.7 1 10007 (still compatible) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.8beta1-4 1 10008 2.1.0.8beta1-4 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.8rc1 1 10008 2.1.0.8rc1 625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.8 1 10008 2.1.0.8 635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.9beta1-6 1 10009 2.1.0.9beta1-6 645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.9rc1 1 10009 2.1.0.9rc1 655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.9beta7-10 1 10009 2.1.0.9beta7-10 665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.9rc2 1 10009 2.1.0.9rc2 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.9 1 10009 2.1.0.9 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.10beta1 1 10010 2.1.0.10beta1 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.10rc1 1 10010 2.1.0.10rc1 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.10 1 10010 2.1.0.10 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.11beta1-3 1 10011 2.1.0.11beta1-3 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.11rc1 1 10011 2.1.0.11rc1 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.11 1 10011 2.1.0.11 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.12beta1-2 2 10012 2.1.0.12beta1-2 755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.12rc1 2 10012 2.1.0.12rc1 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.12 2 10012 2.1.0.12 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned) 785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.0beta1-2 2 10200 2.1.2.0beta1-2 795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.0beta3-5 3 10200 3.1.2.0beta3-5 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.0rc1 3 10200 3.1.2.0rc1 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.0 3 10200 3.1.2.0 825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.1beta1-4 3 10201 3.1.2.1beta1-4 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.1rc1-2 3 10201 3.1.2.1rc1-2 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.1 3 10201 3.1.2.1 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.13beta1 10 10013 10.so.0.1.0.13beta1 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.13rc1 10 10013 10.so.0.1.0.13rc1 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.2rc1 12 10202 12.so.0.1.2.2rc1 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.13 10 10013 10.so.0.1.0.13 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.2 12 10202 12.so.0.1.2.2 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.3 12 10203 12.so.0.1.2.3 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.14rc1 13 10014 10.so.0.1.0.14rc1 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.4rc1 13 10204 12.so.0.1.2.4rc1 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.14 10 10014 10.so.0.1.0.14 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.4 13 10204 12.so.0.1.2.4 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.15rc1-3 10 10015 10.so.0.1.0.15rc1-3 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.5rc1-3 13 10205 12.so.0.1.2.5rc1-3 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.15 10 10015 10.so.0.1.0.15 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.5 13 10205 12.so.0.1.2.5 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.16 10 10016 10.so.0.1.0.16 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.6 13 10206 12.so.0.1.2.6 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.17rc1 10 10017 10.so.0.1.0.17rc1 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.7rc1 13 10207 12.so.0.1.2.7rc1 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.17 10 10017 10.so.0.1.0.17 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.7 13 10207 12.so.0.1.2.7 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.18rc1-5 10 10018 10.so.0.1.0.18rc1-5 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.18 10 10018 10.so.0.1.0.18 1155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.8 13 10208 12.so.0.1.2.8 1165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3 1175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.9beta4-11 13 10209 12.so.0.9[.0] 1185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.9rc1 13 10209 12.so.0.9[.0] 1195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.9 13 10209 12.so.0.9[.0] 1205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.10beta1-8 13 10210 12.so.0.10[.0] 1215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.10rc1-3 13 10210 12.so.0.10[.0] 1225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.10 13 10210 12.so.0.10[.0] 1235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.11beta1-4 13 10211 12.so.0.11[.0] 1245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.19rc1-5 10 10019 10.so.0.19[.0] 1255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.11rc1-5 13 10211 12.so.0.11[.0] 1265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.19 10 10019 10.so.0.19[.0] 1275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.11 13 10211 12.so.0.11[.0] 1285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.20 10 10020 10.so.0.20[.0] 1295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.12 13 10212 12.so.0.12[.0] 1305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.13beta1 13 10213 12.so.0.13[.0] 1315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.21 10 10021 10.so.0.21[.0] 1325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.13 13 10213 12.so.0.13[.0] 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.14beta1-2 13 10214 12.so.0.14[.0] 1345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.22rc1 10 10022 10.so.0.22[.0] 1355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.14rc1 13 10214 12.so.0.14[.0] 1365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.22 10 10022 10.so.0.22[.0] 1375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.14 13 10214 12.so.0.14[.0] 1385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.15beta1-6 13 10215 12.so.0.15[.0] 1395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.23rc1-5 10 10023 10.so.0.23[.0] 1405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.15rc1-5 13 10215 12.so.0.15[.0] 1415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.23 10 10023 10.so.0.23[.0] 1425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.15 13 10215 12.so.0.15[.0] 1435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.16beta1-2 13 10216 12.so.0.16[.0] 1445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.16rc1 13 10216 12.so.0.16[.0] 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.24 10 10024 10.so.0.24[.0] 1465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.16 13 10216 12.so.0.16[.0] 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.17beta1-2 13 10217 12.so.0.17[.0] 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.25rc1 10 10025 10.so.0.25[.0] 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.17rc1-3 13 10217 12.so.0.17[.0] 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.25 10 10025 10.so.0.25[.0] 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.17 13 10217 12.so.0.17[.0] 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.26 10 10026 10.so.0.26[.0] 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.18 13 10218 12.so.0.18[.0] 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.19beta1-31 13 10219 12.so.0.19[.0] 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.27rc1-6 10 10027 10.so.0.27[.0] 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.19rc1-6 13 10219 12.so.0.19[.0] 1575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.27 10 10027 10.so.0.27[.0] 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.19 13 10219 12.so.0.19[.0] 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.20beta01-04 13 10220 12.so.0.20[.0] 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.28rc1-6 10 10028 10.so.0.28[.0] 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.20rc1-6 13 10220 12.so.0.20[.0] 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.28 10 10028 10.so.0.28[.0] 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.20 13 10220 12.so.0.20[.0] 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.21beta1-2 13 10221 12.so.0.21[.0] 1655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.21rc1-3 13 10221 12.so.0.21[.0] 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.29 10 10029 10.so.0.29[.0] 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.21 13 10221 12.so.0.21[.0] 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.22beta1-4 13 10222 12.so.0.22[.0] 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.30rc1 10 10030 10.so.0.30[.0] 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.22rc1 13 10222 12.so.0.22[.0] 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.30 10 10030 10.so.0.30[.0] 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.22 13 10222 12.so.0.22[.0] 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.23beta01-05 13 10223 12.so.0.23[.0] 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.23rc01 13 10223 12.so.0.23[.0] 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.23 13 10223 12.so.0.23[.0] 1765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.24beta01-02 13 10224 12.so.0.24[.0] 1775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.24rc01 13 10224 12.so.0.24[.0] 1785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.24 13 10224 12.so.0.24[.0] 1795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.25beta01-06 13 10225 12.so.0.25[.0] 1805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.25rc01-02 13 10225 12.so.0.25[.0] 1815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.31 10 10031 10.so.0.31[.0] 1825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.25 13 10225 12.so.0.25[.0] 1835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.26beta01-06 13 10226 12.so.0.26[.0] 1845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.26rc01 13 10226 12.so.0.26[.0] 1855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.26 13 10226 12.so.0.26[.0] 1865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.32 10 10032 10.so.0.32[.0] 1875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.27beta01-06 13 10227 12.so.0.27[.0] 1885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.27rc01 13 10227 12.so.0.27[.0] 1895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.33 10 10033 10.so.0.33[.0] 1905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.27 13 10227 12.so.0.27[.0] 1915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.34 10 10034 10.so.0.34[.0] 1925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.28 13 10228 12.so.0.28[.0] 1935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.29beta01-03 13 10229 12.so.0.29[.0] 1945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.29rc01 13 10229 12.so.0.29[.0] 1955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.35 10 10035 10.so.0.35[.0] 1965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.29 13 10229 12.so.0.29[.0] 1975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.37 10 10037 10.so.0.37[.0] 1985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.30beta01-04 13 10230 12.so.0.30[.0] 1995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.38rc01-08 10 10038 10.so.0.38[.0] 2005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.30rc01-08 13 10230 12.so.0.30[.0] 2015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.38 10 10038 10.so.0.38[.0] 2025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.30 13 10230 12.so.0.30[.0] 2035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.39rc01-03 10 10039 10.so.0.39[.0] 2045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.31rc01-03 13 10231 12.so.0.31[.0] 2055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.39 10 10039 10.so.0.39[.0] 2065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.31 13 10231 12.so.0.31[.0] 2075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.32beta01-02 13 10232 12.so.0.32[.0] 2085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.40rc01 10 10040 10.so.0.40[.0] 2095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.32rc01 13 10232 12.so.0.32[.0] 2105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.40 10 10040 10.so.0.40[.0] 2115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.32 13 10232 12.so.0.32[.0] 2125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.33beta01-02 13 10233 12.so.0.33[.0] 2135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.33rc01-02 13 10233 12.so.0.33[.0] 2145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.41rc01 10 10041 10.so.0.41[.0] 2155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.33 13 10233 12.so.0.33[.0] 2165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.41 10 10041 10.so.0.41[.0] 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.34beta01-07 13 10234 12.so.0.34[.0] 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.42rc01 10 10042 10.so.0.42[.0] 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.34rc01 13 10234 12.so.0.34[.0] 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.42 10 10042 10.so.0.42[.0] 2215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.34 13 10234 12.so.0.34[.0] 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.35beta01-03 13 10235 12.so.0.35[.0] 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.43rc01-02 10 10043 10.so.0.43[.0] 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.35rc01-02 13 10235 12.so.0.35[.0] 2255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.43 10 10043 10.so.0.43[.0] 2265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.35 13 10235 12.so.0.35[.0] 2275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.36beta01-05 13 10236 12.so.0.36[.0] 2285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.36rc01 13 10236 12.so.0.36[.0] 2295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.44 10 10044 10.so.0.44[.0] 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.36 13 10236 12.so.0.36[.0] 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.37beta01-03 13 10237 12.so.0.37[.0] 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.37rc01 13 10237 12.so.0.37[.0] 2335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.37 13 10237 12.so.0.37[.0] 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.45 10 10045 12.so.0.45[.0] 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.46 10 10046 10.so.0.46[.0] 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.38beta01 13 10238 12.so.0.38[.0] 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.38rc01-03 13 10238 12.so.0.38[.0] 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.47 10 10047 10.so.0.47[.0] 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.38 13 10238 12.so.0.38[.0] 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.39beta01-05 13 10239 12.so.0.39[.0] 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.39rc01 13 10239 12.so.0.39[.0] 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.48 10 10048 10.so.0.48[.0] 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.39 13 10239 12.so.0.39[.0] 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.40beta01 13 10240 12.so.0.40[.0] 2455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.40rc01 13 10240 12.so.0.40[.0] 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.49 10 10049 10.so.0.49[.0] 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.40 13 10240 12.so.0.40[.0] 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.41beta01-18 13 10241 12.so.0.41[.0] 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.51rc01 10 10051 10.so.0.51[.0] 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.41rc01-03 13 10241 12.so.0.41[.0] 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.51 10 10051 10.so.0.51[.0] 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.41 13 10241 12.so.0.41[.0] 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.42beta01-02 13 10242 12.so.0.42[.0] 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.42rc01-05 13 10242 12.so.0.42[.0] 2555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.52 10 10052 10.so.0.52[.0] 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.42 13 10242 12.so.0.42[.0] 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.43beta01-05 13 10243 12.so.0.43[.0] 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.53rc01-02 10 10053 10.so.0.53[.0] 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.43rc01-02 13 10243 12.so.0.43[.0] 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.53 10 10053 10.so.0.53[.0] 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.43 13 10243 12.so.0.43[.0] 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.44beta01-03 13 10244 12.so.0.44[.0] 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.44rc01-03 13 10244 12.so.0.44[.0] 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.44 13 10244 12.so.0.44[.0] 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.45beta01-03 13 10245 12.so.0.45[.0] 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.55rc01 13 10055 10.so.0.55[.0] 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.45rc01 13 10245 12.so.0.45[.0] 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.0.55 13 10055 10.so.0.55[.0] 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1.2.45 13 10245 12.so.0.45[.0] 2705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Henceforth the source version will match the shared-library major 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and minor numbers; the shared-library major version number will be 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * used for changes in backward compatibility, as it is intended. The 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * PNG_LIBPNG_VER macro, which is not used within libpng but is available 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * for applications, is an unsigned integer of the form xyyzz corresponding 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to the source version x.y.z (leading zeros in y and z). Beta versions 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * were given the previous public release number plus a letter, until 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * version 1.0.6j; from then on they were given the upcoming public 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * release number plus "betaNN" or "rcNN". 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Binary incompatibility exists only when applications make direct access 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to the info_ptr or png_ptr members through png.h, and the compiled 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * application is loaded with a different version of the library. 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * DLLNUM will change each time there are forward or backward changes 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in binary compatibility (e.g., when a new feature is added). 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * See libpng.txt or libpng.3 for more information. The PNG specification 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * is available as a W3C Recommendation and as an ISO Specification, 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * <http://www.w3.org/TR/2003/REC-PNG-20031110/ 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If you modify libpng you may insert additional notices immediately following 2975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * this sentence. 2985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This code is released under the libpng license. 3005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 1.2.6, August 15, 2004, through 1.2.45, July 7, 2011, are 3025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are 3035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * distributed according to the same disclaimer and license as libpng-1.2.5 3045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * with the following individual added to the list of Contributing Authors: 3055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Cosmin Truta 3075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are 3095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are 3105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * distributed according to the same disclaimer and license as libpng-1.0.6 3115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * with the following individuals added to the list of Contributing Authors: 3125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Simon-Pierre Cadieux 3145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Eric S. Raymond 3155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Gilles Vollant 3165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and with the following additions to the disclaimer: 3185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * There is no warranty against interference with your enjoyment of the 3205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * library or against infringement. There is no warranty that our 3215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * efforts or the library will fulfill any of your particular purposes 3225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * or needs. This library is provided with all faults, and the entire 3235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * risk of satisfactory quality, performance, accuracy, and effort is with 3245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the user. 3255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are 3275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, and are 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * distributed according to the same disclaimer and license as libpng-0.96, 3295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * with the following individuals added to the list of Contributing Authors: 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Tom Lane 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Glenn Randers-Pehrson 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Willem van Schaik 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 0.89, June 1996, through 0.96, May 1997, are 3365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 1996, 1997 Andreas Dilger 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Distributed according to the same disclaimer and license as libpng-0.88, 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * with the following individuals added to the list of Contributing Authors: 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * John Bowler 3415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Kevin Bracey 3425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Sam Bushell 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Magnus Holmgren 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Greg Roelofs 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Tom Tanner 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng versions 0.5, May 1995, through 0.88, January 1996, are 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc. 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * For the purposes of this copyright and license, "Contributing Authors" 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * is defined as the following set of individuals: 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Andreas Dilger 3545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Dave Martindale 3555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Guy Eric Schalnat 3565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Paul Schmidt 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Tim Wegner 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The PNG Reference Library is supplied "AS IS". The Contributing Authors 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and Group 42, Inc. disclaim all warranties, expressed or implied, 3615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * including, without limitation, the warranties of merchantability and of 3625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * fitness for any purpose. The Contributing Authors and Group 42, Inc. 3635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * assume no liability for direct, indirect, incidental, special, exemplary, 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * or consequential damages, which may result from the use of the PNG 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Reference Library, even if advised of the possibility of such damage. 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Permission is hereby granted to use, copy, modify, and distribute this 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * source code, or portions hereof, for any purpose, without fee, subject 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to the following restrictions: 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 1. The origin of this source code must not be misrepresented. 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 2. Altered versions must be plainly marked as such and 3745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * must not be misrepresented as being the original source. 3755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3. This Copyright notice may not be removed or altered from 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * any source or altered source distribution. 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The Contributing Authors and Group 42, Inc. specifically permit, without 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * fee, and encourage the use of this source code as a component to 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * supporting the PNG file format in commercial products. If you use this 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * source code in a product, acknowledgment is not required but would be 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * appreciated. 3845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 3855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * A "png_get_copyright" function is available, for convenient use in "about" 3885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * boxes and the like: 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * printf("%s",png_get_copyright(NULL)); 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Also, the PNG logo (in PNG format, of course) is supplied in the 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31). 3945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Libpng is OSI Certified Open Source Software. OSI Certified is a 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * certification mark of the Open Source Initiative. 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 4025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The contributing authors would like to thank all those who helped 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * with testing, bug fixes, and patience. This wouldn't have been 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * possible without all of you. 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Thanks to Frank J. T. Wojcik for helping with the documentation. 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Y2K compliance in libpng: 4115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ========================= 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * July 7, 2011 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Since the PNG Development group is an ad-hoc body, we can't make 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * an official declaration. 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * This is your unofficial assurance that libpng from version 0.71 and 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * upward through 1.2.45 are Y2K compliant. It is my belief that earlier 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * versions were also Y2K compliant. 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Libpng only has three year fields. One is a 2-byte unsigned integer 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * that will hold years up to 65535. The other two hold the date in text 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * format, and will hold years up to 9999. 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The integer is 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "png_uint_16 year" in png_time_struct. 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The strings are 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "png_charp time_buffer" in png_struct and 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "near_time_buffer", which is a local character string in png.c. 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * There are seven time-related functions: 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png.c: png_convert_to_rfc_1123() in png.c 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (formerly png_convert_to_rfc_1152() in error) 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_convert_from_time_t() in pngwrite.c 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_get_tIME() in pngget.c 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_handle_tIME() in pngrutil.c, called in pngread.c 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_set_tIME() in pngset.c 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_write_tIME() in pngwutil.c, called in pngwrite.c 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * All handle dates properly in a Y2K environment. The 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_convert_from_time_t() function calls gmtime() to convert from system 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * clock time, which returns (year - 1900), which we properly convert to 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the full 4-digit year. There is a possibility that applications using 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng are not passing 4-digit years into the png_convert_to_rfc_1123() 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * function, or that they are incorrectly passing only a 2-digit year 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * instead of "year - 1900" into the png_convert_from_struct_tm() function, 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * but this is not under our control. The libpng documentation has always 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * stated that it works with 4-digit years, and the APIs have been 4525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * documented as such. 4535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * integer to hold the year, and can hold years as large as 65535. 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * zlib, upon which libpng depends, is also Y2K compliant. It contains 4585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * no date-related code. 4595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 4605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Glenn Randers-Pehrson 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng maintainer 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * PNG Development Group 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_H 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_H 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This is not the place to learn how to use libpng. The file libpng.txt 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * describes how to use libpng, and the file example.c summarizes it 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * with some code on which to build. This file is useful for looking 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * at the actual function definitions and structure components. 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Version information for png.h - this should match the version in png.c */ 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_STRING "1.2.45" 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HEADER_VERSION_STRING \ 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) " libpng version 1.2.45 - July 7, 2011\n" 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_SONUM 0 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_DLLNUM 13 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_MAJOR 1 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_MINOR 2 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_RELEASE 45 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This should match the numeric part of the final component of 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * PNG_LIBPNG_VER_STRING, omitting any leading zero: 4885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER_BUILD 0 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Release Status */ 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_ALPHA 1 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_BETA 2 4955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_RC 3 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_STABLE 4 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Release-Specific Flags */ 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_LIBPNG_BUILD_STABLE only */ 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with 5035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_LIBPNG_BUILD_SPECIAL */ 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_LIBPNG_BUILD_PRIVATE */ 5065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE 5085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Careful here. At one time, Guy wanted to use 082, but that would be octal. 5105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * We must not include leading zeros. 5115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only 5125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * version 1.0.0 was mis-numbered 100 instead of 10000). From 5135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release 5145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 5155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_LIBPNG_VER 10245 /* 1.2.45 */ 5165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_VERSION_INFO_ONLY 5185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Include the compression library's header */ 5195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "zlib.h" 5205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Include all user configurable info, including optional assembler routines */ 5235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "pngconf.h" 5245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 5265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Added at libpng-1.2.8 */ 5275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Ref MSDN: Private as priority over Special 5285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * VS_FF_PRIVATEBUILD File *was not* built using standard release 5295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * procedures. If this value is given, the StringFileInfo block must 5305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * contain a PrivateBuild string. 5315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 5325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * VS_FF_SPECIALBUILD File *was* built by the original company using 5335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * standard release procedures but is a variation of the standard 5345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * file of the same version number. If this value is given, the 5355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * StringFileInfo block must contain a SpecialBuild string. 5365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 5375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_PRIVATEBUILD 5395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define PNG_LIBPNG_BUILD_TYPE \ 5405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE) 5415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 5425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifdef PNG_LIBPNG_SPECIALBUILD 5435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define PNG_LIBPNG_BUILD_TYPE \ 5445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL) 5455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# else 5465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE) 5475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 5485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_VERSION_INFO_ONLY 5515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Inhibit C++ name-mangling for libpng functions but not for system calls. */ 5535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef __cplusplus 5545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern "C" { 5555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* __cplusplus */ 5565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This file is arranged in several sections. The first section contains 5585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * structure and type definitions. The second section contains the external 5595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * library functions, while the third has the internal library functions, 5605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * which applications aren't expected to use directly. 5615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 5625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_TYPECAST_NULL 5645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define int_p_NULL (int *)NULL 5655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_bytep_NULL (png_bytep)NULL 5665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_bytepp_NULL (png_bytepp)NULL 5675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_doublep_NULL (png_doublep)NULL 5685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_error_ptr_NULL (png_error_ptr)NULL 5695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_flush_ptr_NULL (png_flush_ptr)NULL 5705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_free_ptr_NULL (png_free_ptr)NULL 5715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_infopp_NULL (png_infopp)NULL 5725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_malloc_ptr_NULL (png_malloc_ptr)NULL 5735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_read_status_ptr_NULL (png_read_status_ptr)NULL 5745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_rw_ptr_NULL (png_rw_ptr)NULL 5755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_structp_NULL (png_structp)NULL 5765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_uint_16p_NULL (png_uint_16p)NULL 5775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_voidp_NULL (png_voidp)NULL 5785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_write_status_ptr_NULL (png_write_status_ptr)NULL 5795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 5805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define int_p_NULL NULL 5815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_bytep_NULL NULL 5825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_bytepp_NULL NULL 5835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_doublep_NULL NULL 5845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_error_ptr_NULL NULL 5855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_flush_ptr_NULL NULL 5865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_free_ptr_NULL NULL 5875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_infopp_NULL NULL 5885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_malloc_ptr_NULL NULL 5895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_read_status_ptr_NULL NULL 5905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_rw_ptr_NULL NULL 5915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_structp_NULL NULL 5925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_uint_16p_NULL NULL 5935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_voidp_NULL NULL 5945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_write_status_ptr_NULL NULL 5955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 5965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */ 5985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) 5995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Version information for C files, stored in png.c. This had better match 6005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the version above. 6015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USE_GLOBAL_ARRAYS 6035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST char) png_libpng_ver[18]; 6045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Need room for 99.99.99beta99z */ 6055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 6065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_libpng_ver png_get_header_ver(NULL) 6075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 6085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USE_GLOBAL_ARRAYS 6105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This was removed in version 1.0.5c */ 6115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Structures to facilitate easy interlacing. See png.c for more details */ 6125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_start[7]; 6135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_inc[7]; 6145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_ystart[7]; 6155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_yinc[7]; 6165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_mask[7]; 6175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_dsp_mask[7]; 6185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This isn't currently used. If you need it, see png.c for more details. 6195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (PNG_CONST int FARDATA) png_pass_height[7]; 6205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 6215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 6225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_NO_EXTERN */ 6245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Three color definitions. The order of the red, green, and blue, (and the 6265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * exact size) is not important, although the size of the fields need to 6275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * be png_byte or png_uint_16 (as defined below). 6285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_color_struct 6305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte red; 6325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte green; 6335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte blue; 6345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_color; 6355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_color FAR * png_colorp; 6365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_color FAR * FAR * png_colorpp; 6375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_color_16_struct 6395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte index; /* used for palette files */ 6415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 red; /* for use in red green blue files */ 6425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 green; 6435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 blue; 6445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 gray; /* for use in grayscale files */ 6455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_color_16; 6465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_color_16 FAR * png_color_16p; 6475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_color_16 FAR * FAR * png_color_16pp; 6485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_color_8_struct 6505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte red; /* for use in red green blue files */ 6525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte green; 6535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte blue; 6545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte gray; /* for use in grayscale files */ 6555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte alpha; /* for alpha channel files */ 6565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_color_8; 6575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_color_8 FAR * png_color_8p; 6585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_color_8 FAR * FAR * png_color_8pp; 6595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 6615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The following two structures are used for the in-core representation 6625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * of sPLT chunks. 6635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_sPLT_entry_struct 6655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 red; 6675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 green; 6685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 blue; 6695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 alpha; 6705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 frequency; 6715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_sPLT_entry; 6725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_sPLT_entry FAR * png_sPLT_entryp; 6735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_sPLT_entry FAR * FAR * png_sPLT_entrypp; 6745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* When the depth of the sPLT palette is 8 bits, the color and alpha samples 6765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * occupy the LSB of their respective members, and the MSB of each member 6775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * is zero-filled. The frequency member always occupies the full 16 bits. 6785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_sPLT_struct 6815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 6825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp name; /* palette name */ 6835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte depth; /* depth of palette samples */ 6845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_sPLT_entryp entries; /* palette entries */ 6855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 nentries; /* number of palette entries */ 6865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_sPLT_t; 6875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_sPLT_t FAR * png_sPLT_tp; 6885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_sPLT_t FAR * FAR * png_sPLT_tpp; 6895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 6905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TEXT_SUPPORTED 6915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file, 6925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and whether that contents is compressed or not. The "key" field 6935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * points to a regular zero-terminated C string. The "text", "lang", and 6945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "lang_key" fields can be regular C strings, empty strings, or NULL pointers. 6955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * However, the * structure returned by png_get_text() will always contain 6965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * regular zero-terminated C strings (possibly empty), never NULL pointers, 6975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * so they can be safely used in printf() and other string-handling functions. 6985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 6995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_text_struct 7005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 7015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int compression; /* compression value: 7025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) -1: tEXt, none 7035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 0: zTXt, deflate 7045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1: iTXt, none 7055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2: iTXt, deflate */ 7065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp key; /* keyword, 1-79 character description of "text" */ 7075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp text; /* comment, may be an empty string (ie "") 7085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) or a NULL pointer */ 7095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t text_length; /* length of the text string */ 7105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_iTXt_SUPPORTED 7115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t itxt_length; /* length of the itxt string */ 7125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp lang; /* language code, 0-79 characters 7135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) or a NULL pointer */ 7145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp lang_key; /* keyword translated UTF-8 string, 0 or more 7155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) chars or a NULL pointer */ 7165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 7175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_text; 7185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_text FAR * png_textp; 7195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_text FAR * FAR * png_textpp; 7205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 7215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Supported compression types for text in PNG files (tEXt, and zTXt). 7235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. 7245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 7255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TEXT_COMPRESSION_NONE_WR -3 7265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TEXT_COMPRESSION_zTXt_WR -2 7275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TEXT_COMPRESSION_NONE -1 7285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TEXT_COMPRESSION_zTXt 0 7295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ITXT_COMPRESSION_NONE 1 7305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ITXT_COMPRESSION_zTXt 2 7315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */ 7325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png_time is a way to hold the time in an machine independent way. 7345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Two conversions are provided, both from time_t and struct tm. There 7355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * is no portable way to convert to either of these structures, as far 7365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * as I know. If you know of a portable way, send it to me. As a side 7375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * note - PNG has always been Year 2000 compliant! 7385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 7395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_time_struct 7405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 7415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 year; /* full year, as in, 1995 */ 7425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte month; /* month of year, 1 - 12 */ 7435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte day; /* day of month, 1 - 31 */ 7445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte hour; /* hour of day, 0 - 23 */ 7455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte minute; /* minute of hour, 0 - 59 */ 7465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte second; /* second of minute, 0 - 60 (for leap seconds) */ 7475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_time; 7485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_time FAR * png_timep; 7495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_time FAR * FAR * png_timepp; 7505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \ 7525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) 7535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png_unknown_chunk is a structure to hold queued chunks for which there is 7545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * no specific support. The idea is that we can use this to queue 7555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * up private chunks for output even though the library doesn't actually 7565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * know about their semantics. 7575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 7585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CHUNK_NAME_LENGTH 5 7595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_unknown_chunk_t 7605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 7615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte name[PNG_CHUNK_NAME_LENGTH]; 7625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte *data; 7635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t size; 7645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* libpng-using applications should NOT directly modify this byte. */ 7665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte location; /* mode of operation at read time */ 7675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 7685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_unknown_chunk; 7695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_unknown_chunk FAR * png_unknown_chunkp; 7705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_unknown_chunk FAR * FAR * png_unknown_chunkpp; 7715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 7725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png_info is a structure that holds the information in a PNG file so 7745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * that the application can find out the characteristics of the image. 7755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If you are reading the file, this structure will tell you what is 7765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in the PNG file. If you are writing the file, fill in the information 7775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * you want to put into the PNG file, then call png_write_info(). 7785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The names chosen should be very close to the PNG specification, so 7795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * consult that document for information about the meaning of each field. 7805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 7815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * With libpng < 0.95, it was only possible to directly set and read the 7825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the values in the png_info_struct, which meant that the contents and 7835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * order of the values had to remain fixed. With libpng 0.95 and later, 7845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * however, there are now functions that abstract the contents of 7855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_info_struct from the application, so this makes it easier to use 7865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng with dynamic libraries, and even makes it possible to use 7875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libraries that don't have all of the libpng ancillary chunk-handing 7885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * functionality. 7895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 7905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * In any case, the order of the parameters in png_info_struct should NOT 7915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * be changed for as long as possible to keep compatibility with applications 7925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * that use the old direct-access method with png_info_struct. 7935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 7945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The following members may have allocated storage attached that should be 7955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * cleaned up before the structure is discarded: palette, trans, text, 7965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile, 7975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these 7985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * are automatically freed when the info structure is deallocated, if they were 7995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * allocated internally by libpng. This behavior can be changed by means 8005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * of the png_data_freer() function. 8015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 8025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * More allocation details: all the chunk-reading functions that 8035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * change these members go through the corresponding png_set_* 8045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * functions. A function to clear these members is available: see 8055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_free_data(). The png_set_* functions do not depend on being 8065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * able to point info structure members to any of the storage they are 8075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * passed (they make their own copies), EXCEPT that the png_set_text 8085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * functions use the same storage passed to them in the text_ptr or 8095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns 8105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * functions do not make their own copies. 8115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_info_struct 8135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 8145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The following are necessary for every PNG file */ 8155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels (from IHDR) */ 8165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels (from IHDR) */ 8175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 valid PNG_DEPSTRUCT; /* valid chunk data (see PNG_INFO_ below) */ 8185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 rowbytes PNG_DEPSTRUCT; /* bytes needed to hold an untransformed row */ 8195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_colorp palette PNG_DEPSTRUCT; /* array of color values (valid & PNG_INFO_PLTE) */ 8205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in "palette" (PLTE) */ 8215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparent palette color (tRNS) */ 8225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte bit_depth PNG_DEPSTRUCT; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */ 8235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte color_type PNG_DEPSTRUCT; /* see PNG_COLOR_TYPE_ below (from IHDR) */ 8245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The following three should have been named *_method not *_type */ 8255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte compression_type PNG_DEPSTRUCT; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */ 8265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte filter_type PNG_DEPSTRUCT; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */ 8275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte interlace_type PNG_DEPSTRUCT; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ 8285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The following is informational only on read, and not used on writes. */ 8305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte channels PNG_DEPSTRUCT; /* number of data channels per pixel (1, 2, 3, 4) */ 8315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */ 8325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte spare_byte PNG_DEPSTRUCT; /* to align the data, and for future use */ 8335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte signature[8] PNG_DEPSTRUCT; /* magic bytes read by libpng from start of file */ 8345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The rest of the data is optional. If you are reading, check the 8365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * valid field to see if the information in these are valid. If you 8375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * are writing, set the valid field to those chunks you want written, 8385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and initialize the appropriate fields below. 8395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_gAMA_SUPPORTED) && defined(PNG_FLOATING_POINT_SUPPORTED) 8425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The gAMA chunk describes the gamma characteristics of the system 8435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * on which the image was created, normally in the range [1.0, 2.5]. 8445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Data is valid if (valid & PNG_INFO_gAMA) is non-zero. 8455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float gamma PNG_DEPSTRUCT; /* gamma value of image, if (valid & PNG_INFO_gAMA) */ 8475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 8485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sRGB_SUPPORTED 8505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* GR-P, 0.96a */ 8515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Data valid if (valid & PNG_INFO_sRGB) non-zero. */ 8525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte srgb_intent PNG_DEPSTRUCT; /* sRGB rendering intent [0, 1, 2, or 3] */ 8535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 8545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TEXT_SUPPORTED 8565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The tEXt, and zTXt chunks contain human-readable textual data in 8575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * uncompressed, compressed, and optionally compressed forms, respectively. 8585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The data in "text" is an array of pointers to uncompressed, 8595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * null-terminated C strings. Each chunk has a keyword that describes the 8605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * textual data contained in that chunk. Keywords are not required to be 8615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * unique, and the text string may be empty. Any number of text chunks may 8625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * be in an image. 8635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_text PNG_DEPSTRUCT; /* number of comments read/to write */ 8655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int max_text PNG_DEPSTRUCT; /* current size of text array */ 8665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_textp text PNG_DEPSTRUCT; /* array of comments read/to write */ 8675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_TEXT_SUPPORTED */ 8685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_tIME_SUPPORTED 8705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The tIME chunk holds the last time the displayed image data was 8715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * modified. See the png_time struct for the contents of this struct. 8725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_time mod_time PNG_DEPSTRUCT; 8745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 8755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sBIT_SUPPORTED 8775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The sBIT chunk specifies the number of significant high-order bits 8785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in the pixel data. Values are in the range [1, bit_depth], and are 8795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * only specified for the channels in the pixel data. The contents of 8805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the low-order bits is not specified. Data is valid if 8815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (valid & PNG_INFO_sBIT) is non-zero. 8825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in color channels */ 8845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 8855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 8865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \ 8875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)defined(PNG_READ_BACKGROUND_SUPPORTED) 8885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The tRNS chunk supplies transparency data for paletted images and 8895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * other image types that don't need a full alpha channel. There are 8905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "num_trans" transparency values for a paletted image, stored in the 8915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * same order as the palette colors, starting from index 0. Values 8925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * for the data are in the range [0, 255], ranging from fully transparent 8935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to fully opaque, respectively. For non-paletted images, there is a 8945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * single color specified that should be treated as fully transparent. 8955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Data is valid if (valid & PNG_INFO_tRNS) is non-zero. 8965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 8975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep trans PNG_DEPSTRUCT; /* transparent values for paletted image */ 8985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16 trans_values PNG_DEPSTRUCT; /* transparent color for non-palette image */ 8995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) 9025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The bKGD chunk gives the suggested image background color if the 9035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * display program does not have its own background color and the image 9045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * is needs to composited onto a background before display. The colors 9055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in "background" are normally in the same color space/depth as the 9065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero. 9075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16 background PNG_DEPSTRUCT; 9095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_oFFs_SUPPORTED 9125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards 9135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and downwards from the top-left corner of the display, page, or other 9145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * application-specific co-ordinate space. See the PNG_OFFSET_ defines 9155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero. 9165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 x_offset PNG_DEPSTRUCT; /* x offset on page */ 9185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 y_offset PNG_DEPSTRUCT; /* y offset on page */ 9195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte offset_unit_type PNG_DEPSTRUCT; /* offset units type */ 9205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pHYs_SUPPORTED 9235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The pHYs chunk gives the physical pixel density of the image for 9245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_ 9255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero. 9265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 x_pixels_per_unit PNG_DEPSTRUCT; /* horizontal pixel density */ 9285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 y_pixels_per_unit PNG_DEPSTRUCT; /* vertical pixel density */ 9295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte phys_unit_type PNG_DEPSTRUCT; /* resolution type (see PNG_RESOLUTION_ below) */ 9305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_hIST_SUPPORTED 9335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The hIST chunk contains the relative frequency or importance of the 9345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * various palette entries, so that a viewer can intelligently select a 9355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * reduced-color palette, if required. Data is an array of "num_palette" 9365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST) 9375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * is non-zero. 9385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p hist PNG_DEPSTRUCT; 9405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_cHRM_SUPPORTED 9435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The cHRM chunk describes the CIE color characteristics of the monitor 9445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * on which the PNG was created. This data allows the viewer to do gamut 9455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * mapping of the input image to ensure that the viewer sees the same 9465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * colors in the image as the creator. Values are in the range 9475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * [0.0, 0.8]. Data valid if (valid & PNG_INFO_cHRM) non-zero. 9485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 9505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float x_white PNG_DEPSTRUCT; 9515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float y_white PNG_DEPSTRUCT; 9525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float x_red PNG_DEPSTRUCT; 9535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float y_red PNG_DEPSTRUCT; 9545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float x_green PNG_DEPSTRUCT; 9555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float y_green PNG_DEPSTRUCT; 9565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float x_blue PNG_DEPSTRUCT; 9575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float y_blue PNG_DEPSTRUCT; 9585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pCAL_SUPPORTED 9625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The pCAL chunk describes a transformation between the stored pixel 9635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * values and original physical data values used to create the image. 9645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The integer range [0, 2^bit_depth - 1] maps to the floating-point 9655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * range given by [pcal_X0, pcal_X1], and are further transformed by a 9665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (possibly non-linear) transformation function given by "pcal_type" 9675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_ 9685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * defines below, and the PNG-Group's PNG extensions document for a 9695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * complete description of the transformations and how they should be 9705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * implemented, and for a description of the ASCII parameter strings. 9715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Data values are valid if (valid & PNG_INFO_pCAL) non-zero. 9725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 9735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp pcal_purpose PNG_DEPSTRUCT; /* pCAL chunk description string */ 9745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 pcal_X0 PNG_DEPSTRUCT; /* minimum value */ 9755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 pcal_X1 PNG_DEPSTRUCT; /* maximum value */ 9765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp pcal_units PNG_DEPSTRUCT; /* Latin-1 string giving physical units */ 9775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charpp pcal_params PNG_DEPSTRUCT; /* ASCII strings containing parameter values */ 9785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte pcal_type PNG_DEPSTRUCT; /* equation type (see PNG_EQUATION_ below) */ 9795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte pcal_nparams PNG_DEPSTRUCT; /* number of parameters given in pcal_params */ 9805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.0.6 */ 9835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FREE_ME_SUPPORTED 9845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is responsible for freeing */ 9855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED) || \ 9885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_HANDLE_AS_UNKNOWN_SUPPORTED) 9895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Storage for unknown chunks that the library doesn't recognize. */ 9905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_unknown_chunkp unknown_chunks PNG_DEPSTRUCT; 9915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t unknown_chunks_num PNG_DEPSTRUCT; 9925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 9935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 9945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_iCCP_SUPPORTED 9955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* iCCP chunk data. */ 9965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp iccp_name PNG_DEPSTRUCT; /* profile name */ 9975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp iccp_profile PNG_DEPSTRUCT; /* International Color Consortium profile data */ 9985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Note to maintainer: should be png_bytep */ 9995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 iccp_proflen PNG_DEPSTRUCT; /* ICC profile data length */ 10005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte iccp_compression PNG_DEPSTRUCT; /* Always zero */ 10015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sPLT_SUPPORTED 10045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Data on sPLT chunks (there may be more than one). */ 10055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_sPLT_tp splt_palettes PNG_DEPSTRUCT; 10065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 splt_palettes_num PNG_DEPSTRUCT; 10075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sCAL_SUPPORTED 10105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* The sCAL chunk describes the actual physical dimensions of the 10115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * subject matter of the graphic. The chunk contains a unit specification 10125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * a byte value, and two ASCII strings representing floating-point 10135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * values. The values are width and height corresponsing to one pixel 10145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in the image. This external representation is converted to double 10155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * here. Data values are valid if (valid & PNG_INFO_sCAL) is non-zero. 10165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 10175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte scal_unit PNG_DEPSTRUCT; /* unit of physical scale */ 10185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 10195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double scal_pixel_width PNG_DEPSTRUCT; /* width of one pixel */ 10205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double scal_pixel_height PNG_DEPSTRUCT; /* height of one pixel */ 10215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 10235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp scal_s_width PNG_DEPSTRUCT; /* string containing height */ 10245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp scal_s_height PNG_DEPSTRUCT; /* string containing width */ 10255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_INFO_IMAGE_SUPPORTED 10295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS) non-zero */ 10305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Data valid if (valid & PNG_INFO_IDAT) non-zero */ 10315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytepp row_pointers PNG_DEPSTRUCT; /* the image bits */ 10325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_FIXED_POINT_SUPPORTED) && defined(PNG_gAMA_SUPPORTED) 10355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_gamma PNG_DEPSTRUCT; /* gamma of image, if (valid & PNG_INFO_gAMA) */ 10365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_cHRM_SUPPORTED) && defined(PNG_FIXED_POINT_SUPPORTED) 10395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_x_white PNG_DEPSTRUCT; 10405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_y_white PNG_DEPSTRUCT; 10415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_x_red PNG_DEPSTRUCT; 10425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_y_red PNG_DEPSTRUCT; 10435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_x_green PNG_DEPSTRUCT; 10445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_y_green PNG_DEPSTRUCT; 10455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_x_blue PNG_DEPSTRUCT; 10465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_y_blue PNG_DEPSTRUCT; 10475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_info; 10505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_info FAR * png_infop; 10525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_info FAR * FAR * png_infopp; 10535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Maximum positive integer used in PNG is (2^31)-1 */ 10555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL) 10565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_UINT_32_MAX ((png_uint_32)(-1)) 10575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SIZE_MAX ((png_size_t)(-1)) 10585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 10595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* PNG_MAX_UINT is deprecated; use PNG_UINT_31_MAX instead. */ 10605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_MAX_UINT PNG_UINT_31_MAX 10615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 10625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These describe the color_type field in png_info. */ 10645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* color type masks */ 10655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_MASK_PALETTE 1 10665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_MASK_COLOR 2 10675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_MASK_ALPHA 4 10685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* color types. Note that not all combinations are legal */ 10705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_GRAY 0 10715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE) 10725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR) 10735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA) 10745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA) 10755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* aliases */ 10765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA 10775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA 10785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This is for compression type. PNG 1.0-1.2 only define the single type. */ 10805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */ 10815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE 10825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This is for filter type. PNG 1.0-1.2 only define the single type. */ 10845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */ 10855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */ 10865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE 10875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are for the interlacing type. These values should NOT be changed. */ 10895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */ 10905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */ 10915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INTERLACE_LAST 2 /* Not a valid value */ 10925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are for the oFFs chunk. These values should NOT be changed. */ 10945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */ 10955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */ 10965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_OFFSET_LAST 2 /* Not a valid value */ 10975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 10985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are for the pCAL chunk. These values should NOT be changed. */ 10995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EQUATION_LINEAR 0 /* Linear transformation */ 11005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */ 11015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */ 11025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */ 11035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EQUATION_LAST 4 /* Not a valid value */ 11045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are for the sCAL chunk. These values should NOT be changed. */ 11065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */ 11075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SCALE_METER 1 /* meters per pixel */ 11085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SCALE_RADIAN 2 /* radians per pixel */ 11095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SCALE_LAST 3 /* Not a valid value */ 11105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are for the pHYs chunk. These values should NOT be changed. */ 11125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */ 11135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RESOLUTION_METER 1 /* pixels/meter */ 11145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RESOLUTION_LAST 2 /* Not a valid value */ 11155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are for the sRGB chunk. These values should NOT be changed. */ 11175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sRGB_INTENT_PERCEPTUAL 0 11185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sRGB_INTENT_RELATIVE 1 11195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sRGB_INTENT_SATURATION 2 11205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sRGB_INTENT_ABSOLUTE 3 11215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */ 11225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This is for text chunks */ 11245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_KEYWORD_MAX_LENGTH 79 11255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Maximum number of entries in PLTE/sPLT/tRNS arrays */ 11275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_MAX_PALETTE_LENGTH 256 11285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These determine if an ancillary chunk's data has been successfully read 11305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * from the PNG header, or if the application has filled in the corresponding 11315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * data in the info_struct to be written into the output file. The values 11325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * of the PNG_INFO_<chunk> defines should NOT be changed. 11335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 11345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_gAMA 0x0001 11355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_sBIT 0x0002 11365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_cHRM 0x0004 11375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_PLTE 0x0008 11385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_tRNS 0x0010 11395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_bKGD 0x0020 11405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_hIST 0x0040 11415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_pHYs 0x0080 11425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_oFFs 0x0100 11435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_tIME 0x0200 11445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_pCAL 0x0400 11455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */ 11465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */ 11475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */ 11485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */ 11495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INFO_IDAT 0x8000L /* ESR, 1.0.6 */ 11505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This is used for the transformation routines, as some of them 11525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * change these values for the row. It also should enable using 11535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the routines for other purposes. 11545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 11555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_row_info_struct 11565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 11575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 width; /* width of row */ 11585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 rowbytes; /* number of bytes in row */ 11595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte color_type; /* color type of row */ 11605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte bit_depth; /* bit depth of row */ 11615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte channels; /* number of channels (1, 2, 3, or 4) */ 11625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte pixel_depth; /* bits per pixel (depth * channels) */ 11635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} png_row_info; 11645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_row_info FAR * png_row_infop; 11665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_row_info FAR * FAR * png_row_infopp; 11675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are the function types for the I/O functions and for the functions 11695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * that allow the user to override the default I/O functions with his or her 11705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * own. The png_error_ptr type should match that of user-supplied warning 11715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and error functions, while the png_rw_ptr type should match that of the 11725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * user read/write data functions. 11735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 11745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef struct png_struct_def png_struct; 11755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_struct FAR * png_structp; 11765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_error_ptr) PNGARG((png_structp, png_const_charp)); 11785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_rw_ptr) PNGARG((png_structp, png_bytep, png_size_t)); 11795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_flush_ptr) PNGARG((png_structp)); 11805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_read_status_ptr) PNGARG((png_structp, png_uint_32, 11815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int)); 11825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_write_status_ptr) PNGARG((png_structp, png_uint_32, 11835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int)); 11845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_PROGRESSIVE_READ_SUPPORTED 11865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_progressive_info_ptr) PNGARG((png_structp, png_infop)); 11875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_progressive_end_ptr) PNGARG((png_structp, png_infop)); 11885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_progressive_row_ptr) PNGARG((png_structp, png_bytep, 11895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32, int)); 11905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 11915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 11935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ 11945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_LEGACY_SUPPORTED) 11955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_user_transform_ptr) PNGARG((png_structp, 11965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_row_infop, png_bytep)); 11975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 11985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_CHUNKS_SUPPORTED 12005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef int (PNGAPI *png_user_chunk_ptr) PNGARG((png_structp, png_unknown_chunkp)); 12015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED 12035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (PNGAPI *png_unknown_chunk_ptr) PNGARG((png_structp)); 12045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Transform masks for the high-level interface */ 12075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */ 12085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */ 12095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */ 12105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */ 12115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */ 12125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */ 12135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */ 12145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */ 12155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_BGR 0x0080 /* read and write */ 12165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */ 12175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */ 12185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */ 12195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only, deprecated */ 12205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added to libpng-1.2.34 */ 12215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_STRIP_FILLER_BEFORE 0x0800 /* write only */ 12225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */ 12235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added to libpng-1.2.41 */ 12245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */ 12255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flags for MNG supported features */ 12275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_MNG_EMPTY_PLTE 0x01 12285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_MNG_FILTER_64 0x04 12295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ALL_MNG_FEATURES 0x05 12305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_voidp (*png_malloc_ptr) PNGARG((png_structp, png_size_t)); 12325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef void (*png_free_ptr) PNGARG((png_structp, png_voidp)); 12335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The structure that holds the information to read and write PNG files. 12355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The only people who need to care about what is inside of this are the 12365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * people who will be modifying the library for their own special needs. 12375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * It should NOT be accessed directly by an application, except to store 12385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the jmp_buf. 12395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 12405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)struct png_struct_def 12425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles){ 12435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_SETJMP_SUPPORTED 12445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) jmp_buf jmpbuf; /* used in png_error */ 12455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_error_ptr error_fn PNG_DEPSTRUCT; /* function for printing errors and aborting */ 12475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_error_ptr warning_fn PNG_DEPSTRUCT; /* function for printing warnings */ 12485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp error_ptr PNG_DEPSTRUCT; /* user supplied struct for error functions */ 12495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_rw_ptr write_data_fn PNG_DEPSTRUCT; /* function for writing output data */ 12505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_rw_ptr read_data_fn PNG_DEPSTRUCT; /* function for reading input data */ 12515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp io_ptr PNG_DEPSTRUCT; /* ptr to application struct for I/O functions */ 12525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED 12545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_user_transform_ptr read_user_transform_fn PNG_DEPSTRUCT; /* user read transform */ 12555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED 12585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_user_transform_ptr write_user_transform_fn PNG_DEPSTRUCT; /* user write transform */ 12595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These were added in libpng-1.0.2 */ 12625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED 12635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 12645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) 12655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp user_transform_ptr PNG_DEPSTRUCT; /* user supplied struct for user transform */ 12665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte user_transform_depth PNG_DEPSTRUCT; /* bit depth of user transformed pixels */ 12675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte user_transform_channels PNG_DEPSTRUCT; /* channels in user transformed pixels */ 12685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 mode PNG_DEPSTRUCT; /* tells us where we are in the PNG file */ 12725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 flags PNG_DEPSTRUCT; /* flags indicating various things to libpng */ 12735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 transformations PNG_DEPSTRUCT; /* which transformations to perform */ 12745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) z_stream zstream PNG_DEPSTRUCT; /* pointer to decompression structure (below) */ 12765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep zbuf PNG_DEPSTRUCT; /* buffer for zlib */ 12775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t zbuf_size PNG_DEPSTRUCT; /* size of zbuf */ 12785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int zlib_level PNG_DEPSTRUCT; /* holds zlib compression level */ 12795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int zlib_method PNG_DEPSTRUCT; /* holds zlib compression method */ 12805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int zlib_window_bits PNG_DEPSTRUCT; /* holds zlib compression window bits */ 12815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int zlib_mem_level PNG_DEPSTRUCT; /* holds zlib compression memory level */ 12825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int zlib_strategy PNG_DEPSTRUCT; /* holds zlib compression strategy */ 12835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 12845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 width PNG_DEPSTRUCT; /* width of image in pixels */ 12855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 height PNG_DEPSTRUCT; /* height of image in pixels */ 12865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 num_rows PNG_DEPSTRUCT; /* number of rows in current pass */ 12875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 usr_width PNG_DEPSTRUCT; /* width of row at start of write */ 12885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 rowbytes PNG_DEPSTRUCT; /* size of row in bytes */ 12895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if 0 /* Replaced with the following in libpng-1.2.43 */ 12905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t irowbytes PNG_DEPSTRUCT; 12915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added in libpng-1.2.43 */ 12935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_LIMITS_SUPPORTED 12945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown 12955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * chunks that can be stored (0 means unlimited). 12965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 12975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 user_chunk_cache_max PNG_DEPSTRUCT; 12985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 12995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 iwidth PNG_DEPSTRUCT; /* width of current interlaced row in pixels */ 13005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 row_number PNG_DEPSTRUCT; /* current row in interlace pass */ 13015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep prev_row PNG_DEPSTRUCT; /* buffer to save previous (unfiltered) row */ 13025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row_buf PNG_DEPSTRUCT; /* buffer to save current (unfiltered) row */ 13035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_WRITE_FILTER 13045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep sub_row PNG_DEPSTRUCT; /* buffer to save "sub" row when filtering */ 13055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep up_row PNG_DEPSTRUCT; /* buffer to save "up" row when filtering */ 13065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep avg_row PNG_DEPSTRUCT; /* buffer to save "avg" row when filtering */ 13075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep paeth_row PNG_DEPSTRUCT; /* buffer to save "Paeth" row when filtering */ 13085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_row_info row_info PNG_DEPSTRUCT; /* used for transformation routines */ 13105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 idat_size PNG_DEPSTRUCT; /* current IDAT size for read */ 13125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 crc PNG_DEPSTRUCT; /* current chunk CRC value */ 13135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_colorp palette PNG_DEPSTRUCT; /* palette from the input file */ 13145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 num_palette PNG_DEPSTRUCT; /* number of color entries in palette */ 13155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 num_trans PNG_DEPSTRUCT; /* number of transparency values */ 13165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte chunk_name[5] PNG_DEPSTRUCT; /* null-terminated name of current chunk */ 13175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte compression PNG_DEPSTRUCT; /* file compression type (always 0) */ 13185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte filter PNG_DEPSTRUCT; /* file filter type (always 0) */ 13195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte interlaced PNG_DEPSTRUCT; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */ 13205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte pass PNG_DEPSTRUCT; /* current interlace pass (0 - 6) */ 13215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte do_filter PNG_DEPSTRUCT; /* row filter flags (see PNG_FILTER_ below ) */ 13225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte color_type PNG_DEPSTRUCT; /* color type of file */ 13235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte bit_depth PNG_DEPSTRUCT; /* bit depth of file */ 13245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte usr_bit_depth PNG_DEPSTRUCT; /* bit depth of users row */ 13255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte pixel_depth PNG_DEPSTRUCT; /* number of bits per pixel */ 13265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte channels PNG_DEPSTRUCT; /* number of channels in file */ 13275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte usr_channels PNG_DEPSTRUCT; /* channels at start of write */ 13285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte sig_bytes PNG_DEPSTRUCT; /* magic bytes read/written from start of file */ 13295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) 13315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_LEGACY_SUPPORTED 13325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte filler PNG_DEPSTRUCT; /* filler byte for pixel expansion */ 13335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 13345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 filler PNG_DEPSTRUCT; /* filler bytes for pixel expansion */ 13355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_bKGD_SUPPORTED 13395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte background_gamma_type PNG_DEPSTRUCT; 13405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifdef PNG_FLOATING_POINT_SUPPORTED 13415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float background_gamma PNG_DEPSTRUCT; 13425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 13435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16 background PNG_DEPSTRUCT; /* background color in screen gamma space */ 13445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GAMMA_SUPPORTED 13455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16 background_1 PNG_DEPSTRUCT; /* background normalized to gamma 1.0 */ 13465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_bKGD_SUPPORTED */ 13485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_FLUSH_SUPPORTED 13505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_flush_ptr output_flush_fn PNG_DEPSTRUCT; /* Function for flushing output */ 13515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 flush_dist PNG_DEPSTRUCT; /* how many rows apart to flush, 0 - no flush */ 13525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 flush_rows PNG_DEPSTRUCT; /* number of rows written since last flush */ 13535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) 13565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int gamma_shift PNG_DEPSTRUCT; /* number of "insignificant" bits 16-bit gamma */ 13575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 13585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float gamma PNG_DEPSTRUCT; /* file gamma value */ 13595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float screen_gamma PNG_DEPSTRUCT; /* screen gamma value (display_exponent) */ 13605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) 13645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep gamma_table PNG_DEPSTRUCT; /* gamma table for 8-bit depth files */ 13655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep gamma_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */ 13665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep gamma_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */ 13675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16pp gamma_16_table PNG_DEPSTRUCT; /* gamma table for 16-bit depth files */ 13685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16pp gamma_16_from_1 PNG_DEPSTRUCT; /* converts from 1.0 to screen */ 13695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16pp gamma_16_to_1 PNG_DEPSTRUCT; /* converts from file to 1.0 */ 13705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED) 13735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_8 sig_bit PNG_DEPSTRUCT; /* significant bits in each available channel */ 13745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) 13775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_8 shift PNG_DEPSTRUCT; /* shift for significant bit tranformation */ 13785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \ 13815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) 13825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep trans PNG_DEPSTRUCT; /* transparency values for paletted files */ 13835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16 trans_values PNG_DEPSTRUCT; /* transparency values for non-paletted files */ 13845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 13855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 13865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_read_status_ptr read_row_fn PNG_DEPSTRUCT; /* called after each row is decoded */ 13875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_write_status_ptr write_row_fn PNG_DEPSTRUCT; /* called after each row is encoded */ 13885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_PROGRESSIVE_READ_SUPPORTED 13895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_progressive_info_ptr info_fn PNG_DEPSTRUCT; /* called after header data fully read */ 13905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_progressive_row_ptr row_fn PNG_DEPSTRUCT; /* called after each prog. row is decoded */ 13915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_progressive_end_ptr end_fn PNG_DEPSTRUCT; /* called after image is complete */ 13925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep save_buffer_ptr PNG_DEPSTRUCT; /* current location in save_buffer */ 13935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep save_buffer PNG_DEPSTRUCT; /* buffer for previously read data */ 13945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep current_buffer_ptr PNG_DEPSTRUCT; /* current location in current_buffer */ 13955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep current_buffer PNG_DEPSTRUCT; /* buffer for recently used data */ 13965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 push_length PNG_DEPSTRUCT; /* size of current input chunk */ 13975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 skip_length PNG_DEPSTRUCT; /* bytes to skip in input data */ 13985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t save_buffer_size PNG_DEPSTRUCT; /* amount of data now in save_buffer */ 13995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t save_buffer_max PNG_DEPSTRUCT; /* total size of save_buffer */ 14005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t buffer_size PNG_DEPSTRUCT; /* total amount of available input data */ 14015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t current_buffer_size PNG_DEPSTRUCT; /* amount of data now in current_buffer */ 14025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int process_mode PNG_DEPSTRUCT; /* what push library is currently doing */ 14035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int cur_palette PNG_DEPSTRUCT; /* current push library palette index */ 14045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifdef PNG_TEXT_SUPPORTED 14065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t current_text_size PNG_DEPSTRUCT; /* current size of text input data */ 14075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t current_text_left PNG_DEPSTRUCT; /* how much text left to read in input */ 14085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp current_text PNG_DEPSTRUCT; /* current text chunk buffer */ 14095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp current_text_ptr PNG_DEPSTRUCT; /* current location in current_text */ 14105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif /* PNG_TEXT_SUPPORTED */ 14115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ 14125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__) 14145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* for the Borland special 64K segment handler */ 14155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytepp offset_table_ptr PNG_DEPSTRUCT; 14165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep offset_table PNG_DEPSTRUCT; 14175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 offset_table_number PNG_DEPSTRUCT; 14185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 offset_table_count PNG_DEPSTRUCT; 14195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 offset_table_count_free PNG_DEPSTRUCT; 14205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_DITHER_SUPPORTED 14235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep palette_lookup PNG_DEPSTRUCT; /* lookup table for dithering */ 14245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep dither_index PNG_DEPSTRUCT; /* index translation for palette files */ 14255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_DITHER_SUPPORTED) || defined(PNG_hIST_SUPPORTED) 14285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p hist PNG_DEPSTRUCT; /* histogram */ 14295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED 14325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte heuristic_method PNG_DEPSTRUCT; /* heuristic for row filter selection */ 14335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte num_prev_filters PNG_DEPSTRUCT; /* number of weights for previous rows */ 14345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep prev_filters PNG_DEPSTRUCT; /* filter type(s) of previous row(s) */ 14355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p filter_weights PNG_DEPSTRUCT; /* weight(s) for previous line(s) */ 14365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p inv_filter_weights PNG_DEPSTRUCT; /* 1/weight(s) for previous line(s) */ 14375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p filter_costs PNG_DEPSTRUCT; /* relative filter calculation cost */ 14385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p inv_filter_costs PNG_DEPSTRUCT; /* 1/relative filter calculation cost */ 14395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TIME_RFC1123_SUPPORTED 14425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp time_buffer PNG_DEPSTRUCT; /* String to hold RFC 1123 time text */ 14435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.0.6 */ 14465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FREE_ME_SUPPORTED 14485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 free_me PNG_DEPSTRUCT; /* flags items libpng is responsible for freeing */ 14495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_CHUNKS_SUPPORTED 14525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp user_chunk_ptr PNG_DEPSTRUCT; 14535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_user_chunk_ptr read_user_chunk_fn PNG_DEPSTRUCT; /* user read chunk handler */ 14545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 14575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_chunk_list PNG_DEPSTRUCT; 14585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep chunk_list PNG_DEPSTRUCT; 14595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.0.3 */ 14625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED 14635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte rgb_to_gray_status PNG_DEPSTRUCT; 14645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* These were changed from png_byte in libpng-1.0.6 */ 14655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 rgb_to_gray_red_coeff PNG_DEPSTRUCT; 14665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 rgb_to_gray_green_coeff PNG_DEPSTRUCT; 14675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16 rgb_to_gray_blue_coeff PNG_DEPSTRUCT; 14685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.0.4 (renamed in 1.0.9) */ 14715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_MNG_FEATURES_SUPPORTED) || \ 14725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ 14735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) 14745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Changed from png_byte to png_uint_32 at version 1.2.0 */ 14755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_1_0_X 14765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte mng_features_permitted PNG_DEPSTRUCT; 14775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 14785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 mng_features_permitted PNG_DEPSTRUCT; 14795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_1_0_X */ 14805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.0.7 */ 14835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) 14845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_gamma PNG_DEPSTRUCT; 14855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */ 14885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_MNG_FEATURES_SUPPORTED 14895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte filter_type PNG_DEPSTRUCT; 14905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_1_0_X 14935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.0.10, ifdef'ed out in 1.2.0 */ 14945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 row_buf_size PNG_DEPSTRUCT; 14955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 14965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 14975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.2.0 */ 14985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_ASSEMBLER_CODE_SUPPORTED 14995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef PNG_1_0_X 15005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifdef PNG_MMX_CODE_SUPPORTED 15015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte mmx_bitdepth_threshold PNG_DEPSTRUCT; 15025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 mmx_rowbytes_threshold PNG_DEPSTRUCT; 15035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 15045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 asm_flags PNG_DEPSTRUCT; 15055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 15065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 15075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */ 15095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_MEM_SUPPORTED 15105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp mem_ptr PNG_DEPSTRUCT; /* user supplied struct for mem functions */ 15115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_malloc_ptr malloc_fn PNG_DEPSTRUCT; /* function for allocating memory */ 15125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_free_ptr free_fn PNG_DEPSTRUCT; /* function for freeing memory */ 15135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 15145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.0.13 and 1.2.0 */ 15165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep big_row_buf PNG_DEPSTRUCT; /* buffer to save current (unfiltered) row */ 15175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_DITHER_SUPPORTED 15195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The following three members were added at version 1.0.14 and 1.2.4 */ 15205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep dither_sort PNG_DEPSTRUCT; /* working sort array */ 15215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep index_to_palette PNG_DEPSTRUCT; /* where the original index currently is */ 15225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* in the palette */ 15235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep palette_to_index PNG_DEPSTRUCT; /* which original index points to this */ 15245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* palette color */ 15255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 15265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.0.16 and 1.2.6 */ 15285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_byte compression_type PNG_DEPSTRUCT; 15295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_LIMITS_SUPPORTED 15315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 user_width_max PNG_DEPSTRUCT; 15325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 user_height_max PNG_DEPSTRUCT; 15335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 15345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.0.25 and 1.2.17 */ 15365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED 15375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Storage for unknown chunk that the library doesn't recognize. */ 15385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_unknown_chunk unknown_chunk PNG_DEPSTRUCT; 15395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 15405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New members added in libpng-1.2.26 */ 15425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 old_big_row_buf_size PNG_DEPSTRUCT; 15435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 old_prev_row_size PNG_DEPSTRUCT; 15445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New member added in libpng-1.2.30 */ 15465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp chunkdata PNG_DEPSTRUCT; /* buffer for reading chunk data */ 15475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 15505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* This triggers a compiler error in png.c, if png.c and png.h 15535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * do not agree upon the version number. 15545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 15555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_structp version_1_2_45; 15565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)typedef png_struct FAR * FAR * png_structpp; 15585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Here are the function definitions most commonly used. This is not 15605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the place to find out how to use libpng. See libpng.txt for the 15615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * full explanation, see example.c for the summary. This just provides 15625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * a simple one line description of the use of each function. 15635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 15645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns the version number of the library */ 15665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_access_version_number) PNGARG((void)); 15675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Tell lib we have already handled the first <num_bytes> magic bytes. 15695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Handling more than 8 bytes from the beginning of the file is an error. 15705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 15715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sig_bytes) PNGARG((png_structp png_ptr, 15725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_bytes)); 15735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a 15755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * PNG file. Returns zero if the supplied bytes match the 8-byte PNG 15765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * signature, and non-zero otherwise. Having num_to_check == 0 or 15775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * start > 7 will always fail (ie return non-zero). 15785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 15795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(int,png_sig_cmp) PNGARG((png_bytep sig, png_size_t start, 15805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t num_to_check)); 15815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Simple signature checking function. This is the same as calling 15835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n). 15845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 15855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(int,png_check_sig) PNGARG((png_bytep sig, int num)) PNG_DEPRECATED; 15865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Allocate and initialize png_ptr struct for reading, and any other memory. */ 15885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_structp,png_create_read_struct) 15895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, 15905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED; 15915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Allocate and initialize png_ptr struct for writing, and any other memory */ 15935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_structp,png_create_write_struct) 15945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, 15955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_error_ptr error_fn, png_error_ptr warn_fn)) PNG_ALLOCATED; 15965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 15975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_SUPPORTED 15985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_compression_buffer_size) 15995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)); 16005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_SUPPORTED 16035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_compression_buffer_size) 16045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, png_uint_32 size)); 16055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Reset the compression stream */ 16085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(int,png_reset_zstream) PNGARG((png_structp png_ptr)); 16095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */ 16115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_MEM_SUPPORTED 16125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_structp,png_create_read_struct_2) 16135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, 16145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, 16155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_malloc_ptr malloc_fn, png_free_ptr free_fn)) PNG_ALLOCATED; 16165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_structp,png_create_write_struct_2) 16175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_const_charp user_png_ver, png_voidp error_ptr, 16185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, 16195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_malloc_ptr malloc_fn, png_free_ptr free_fn)) PNG_ALLOCATED; 16205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write a PNG chunk - size, type, (optional) data, CRC. */ 16235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_chunk) PNGARG((png_structp png_ptr, 16245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep chunk_name, png_bytep data, png_size_t length)); 16255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write the start of a PNG chunk - length and chunk name. */ 16275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_chunk_start) PNGARG((png_structp png_ptr, 16285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep chunk_name, png_uint_32 length)); 16295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write the data of a PNG chunk started with png_write_chunk_start(). */ 16315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_chunk_data) PNGARG((png_structp png_ptr, 16325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep data, png_size_t length)); 16335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Finish a chunk started with png_write_chunk_start() (includes CRC). */ 16355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_chunk_end) PNGARG((png_structp png_ptr)); 16365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Allocate and initialize the info structure */ 16385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_infop,png_create_info_struct) 16395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)) PNG_ALLOCATED; 16405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 16425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Initialize the info structure (old interface - DEPRECATED) */ 16435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_info_init) PNGARG((png_infop info_ptr)) 16445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_DEPRECATED; 16455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef png_info_init 16465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_info_init(info_ptr) png_info_init_3(&info_ptr,\ 16475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_sizeof(png_info)); 16485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_info_init_3) PNGARG((png_infopp info_ptr, 16515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t png_info_struct_size)); 16525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Writes all the PNG information before the image. */ 16545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_info_before_PLTE) PNGARG((png_structp png_ptr, 16555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)); 16565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_info) PNGARG((png_structp png_ptr, 16575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)); 16585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_SEQUENTIAL_READ_SUPPORTED 16605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read the information before the actual image data. */ 16615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_info) PNGARG((png_structp png_ptr, 16625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)); 16635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TIME_RFC1123_SUPPORTED 16665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_charp,png_convert_to_rfc1123) 16675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, png_timep ptime)); 16685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_CONVERT_tIME_SUPPORTED 16715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Convert from a struct tm to png_time */ 16725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_convert_from_struct_tm) PNGARG((png_timep ptime, 16735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) struct tm FAR * ttime)); 16745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Convert from time_t to png_time. Uses gmtime() */ 16765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_convert_from_time_t) PNGARG((png_timep ptime, 16775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) time_t ttime)); 16785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_CONVERT_tIME_SUPPORTED */ 16795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_EXPAND_SUPPORTED 16815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */ 16825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_expand) PNGARG((png_structp png_ptr)); 16835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_1_0_X 16845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_expand_gray_1_2_4_to_8) PNGARG((png_structp 16855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr)); 16865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_palette_to_rgb) PNGARG((png_structp png_ptr)); 16885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_tRNS_to_alpha) PNGARG((png_structp png_ptr)); 16895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 16905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Deprecated */ 16915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_gray_1_2_4_to_8) PNGARG((png_structp 16925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr)) PNG_DEPRECATED; 16935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 16955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 16965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) 16975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Use blue, green, red order for pixels. */ 16985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_bgr) PNGARG((png_structp png_ptr)); 16995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED 17025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Expand the grayscale to 24-bit RGB if necessary. */ 17035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_gray_to_rgb) PNGARG((png_structp png_ptr)); 17045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED 17075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Reduce RGB to grayscale. */ 17085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 17095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_rgb_to_gray) PNGARG((png_structp png_ptr, 17105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int error_action, double red, double green )); 17115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_rgb_to_gray_fixed) PNGARG((png_structp png_ptr, 17135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int error_action, png_fixed_point red, png_fixed_point green )); 17145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte,png_get_rgb_to_gray_status) PNGARG((png_structp 17155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr)); 17165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_build_grayscale_palette) PNGARG((int bit_depth, 17195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_colorp palette)); 17205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED 17225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_strip_alpha) PNGARG((png_structp png_ptr)); 17235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \ 17265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED) 17275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_swap_alpha) PNGARG((png_structp png_ptr)); 17285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \ 17315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED) 17325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_invert_alpha) PNGARG((png_structp png_ptr)); 17335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED) 17365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */ 17375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_filler) PNGARG((png_structp png_ptr, 17385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 filler, int flags)); 17395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The values of the PNG_FILLER_ defines should NOT be changed */ 17405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILLER_BEFORE 0 17415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILLER_AFTER 1 17425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */ 17435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_1_0_X 17445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_add_alpha) PNGARG((png_structp png_ptr, 17455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 filler, int flags)); 17465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */ 17485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) 17505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Swap bytes in 16-bit depth files. */ 17515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_swap) PNGARG((png_structp png_ptr)); 17525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED) 17555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */ 17565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_packing) PNGARG((png_structp png_ptr)); 17575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED) 17605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Swap packing order of pixels in bytes. */ 17615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_packswap) PNGARG((png_structp png_ptr)); 17625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED) 17655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Converts files to legal bit depths. */ 17665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_shift) PNGARG((png_structp png_ptr, 17675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_8p true_bits)); 17685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_INTERLACING_SUPPORTED) || \ 17715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_INTERLACING_SUPPORTED) 17725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Have the code handle the interlacing. Returns the number of passes. */ 17735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(int,png_set_interlace_handling) PNGARG((png_structp png_ptr)); 17745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) 17775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Invert monochrome files */ 17785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_invert_mono) PNGARG((png_structp png_ptr)); 17795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_BACKGROUND_SUPPORTED 17825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Handle alpha and tRNS by replacing with a background color. */ 17835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 17845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_background) PNGARG((png_structp png_ptr, 17855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p background_color, int background_gamma_code, 17865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int need_expand, double background_gamma)); 17875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND_GAMMA_UNKNOWN 0 17895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND_GAMMA_SCREEN 1 17905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND_GAMMA_FILE 2 17915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND_GAMMA_UNIQUE 3 17925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_16_TO_8_SUPPORTED 17955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Strip the second byte of information from a 16-bit depth file. */ 17965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_strip_16) PNGARG((png_structp png_ptr)); 17975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 17985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 17995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_DITHER_SUPPORTED 18005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Turn on dithering, and reduce the palette to the number of colors available. */ 18015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_dither) PNGARG((png_structp png_ptr, 18025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_colorp palette, int num_palette, int maximum_colors, 18035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16p histogram, int full_dither)); 18045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GAMMA_SUPPORTED 18075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Handle gamma correction. Screen_gamma=(display_exponent) */ 18085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 18095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_gamma) PNGARG((png_structp png_ptr, 18105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double screen_gamma, double default_file_gamma)); 18115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 18155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \ 18165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED) 18175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Permit or disallow empty PLTE (0: not permitted, 1: permitted) */ 18185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Deprecated and will be removed. Use png_permit_mng_features() instead. */ 18195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_permit_empty_plte) PNGARG((png_structp png_ptr, 18205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int empty_plte_permitted)) PNG_DEPRECATED; 18215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_FLUSH_SUPPORTED 18255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Set how many lines between output flushes - 0 for no flushing */ 18265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_flush) PNGARG((png_structp png_ptr, int nrows)); 18275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flush the current PNG output buffer */ 18285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_flush) PNGARG((png_structp png_ptr)); 18295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Optional update palette with requested transformations */ 18325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_start_read_image) PNGARG((png_structp png_ptr)); 18335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Optional call to update the users info structure */ 18355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_update_info) PNGARG((png_structp png_ptr, 18365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)); 18375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED 18395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read one or more rows of image data. */ 18405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_rows) PNGARG((png_structp png_ptr, 18415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytepp row, png_bytepp display_row, png_uint_32 num_rows)); 18425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED 18455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read a row of data. */ 18465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_row) PNGARG((png_structp png_ptr, 18475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, 18485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep display_row)); 18495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED 18525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read the whole image into memory at once. */ 18535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_image) PNGARG((png_structp png_ptr, 18545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytepp image)); 18555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write a row of image data */ 18585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_row) PNGARG((png_structp png_ptr, 18595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)); 18605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write a few rows of image data */ 18625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_rows) PNGARG((png_structp png_ptr, 18635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytepp row, png_uint_32 num_rows)); 18645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write the image data */ 18665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_image) PNGARG((png_structp png_ptr, 18675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytepp image)); 18685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Writes the end of the PNG file. */ 18705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_end) PNGARG((png_structp png_ptr, 18715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)); 18725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_SEQUENTIAL_READ_SUPPORTED 18745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read the end of the PNG file. */ 18755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_end) PNGARG((png_structp png_ptr, 18765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)); 18775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 18785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free any memory associated with the png_info_struct */ 18805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_destroy_info_struct) PNGARG((png_structp png_ptr, 18815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infopp info_ptr_ptr)); 18825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free any memory associated with the png_struct and the png_info_structs */ 18845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_destroy_read_struct) PNGARG((png_structpp 18855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr)); 18865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free all memory used by the read (old method - NOT DLL EXPORTED) */ 18885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern void png_read_destroy PNGARG((png_structp png_ptr, png_infop info_ptr, 18895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop end_info_ptr)) PNG_DEPRECATED; 18905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free any memory associated with the png_struct and the png_info_structs */ 18925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_destroy_write_struct) 18935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)); 18945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free any memory used in png_ptr struct (old method - NOT DLL EXPORTED) */ 18965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern void png_write_destroy PNGARG((png_structp png_ptr)) PNG_DEPRECATED; 18975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 18985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Set the libpng method of handling chunk CRC errors */ 18995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr, 19005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int crit_action, int ancil_action)); 19015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Values for png_set_crc_action() to say how to handle CRC errors in 19035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ancillary and critical chunks, and whether to use the data contained 19045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * therein. Note that it is impossible to "discard" data in a critical 19055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * chunk. For versions prior to 0.90, the action was always error/quit, 19065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * whereas in version 0.90 and later, the action for CRC errors in ancillary 19075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * chunks is warn/discard. These values should NOT be changed. 19085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 19095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * value action:critical action:ancillary 19105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */ 19125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */ 19135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */ 19145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */ 19155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */ 19165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */ 19175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These functions give the user control over the scan-line filtering in 19195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng and the compression methods used by zlib. These functions are 19205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * mainly useful for testing, as the defaults should work with most users. 19215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Those users who are tight on memory or want faster performance at the 19225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * expense of compression can modify them. See the compression library 19235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * header file (zlib.h) for an explination of the compression functions. 19245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Set the filtering method(s) used by libpng. Currently, the only valid 19275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * value for "method" is 0. 19285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_filter) PNGARG((png_structp png_ptr, int method, 19305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int filters)); 19315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flags for png_set_filter() to say which filters to use. The flags 19335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * are chosen so that they don't conflict with real filter types 19345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * below, in case they are supplied instead of the #defined constants. 19355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * These values should NOT be changed. 19365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_NO_FILTERS 0x00 19385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_NONE 0x08 19395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_SUB 0x10 19405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_UP 0x20 19415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_AVG 0x40 19425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_PAETH 0x80 19435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \ 19445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_FILTER_AVG | PNG_FILTER_PAETH) 19455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now. 19475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * These defines should NOT be changed. 19485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_VALUE_NONE 0 19505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_VALUE_SUB 1 19515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_VALUE_UP 2 19525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_VALUE_AVG 3 19535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_VALUE_PAETH 4 19545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_VALUE_LAST 5 19555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_WRITE_WEIGHTED_FILTER_SUPPORTED) /* EXPERIMENTAL */ 19575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_ 19585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * defines, either the default (minimum-sum-of-absolute-differences), or 19595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the experimental method (weighted-minimum-sum-of-absolute-differences). 19605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 19615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Weights are factors >= 1.0, indicating how important it is to keep the 19625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * filter type consistent between rows. Larger numbers mean the current 19635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * filter is that many times as likely to be the same as the "num_weights" 19645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * previous filters. This is cumulative for each previous row with a weight. 19655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * There needs to be "num_weights" values in "filter_weights", or it can be 19665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * NULL if the weights aren't being specified. Weights have no influence on 19675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the selection of the first row filter. Well chosen weights can (in theory) 19685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * improve the compression for a given image. 19695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 19705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Costs are factors >= 1.0 indicating the relative decoding costs of a 19715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * filter type. Higher costs indicate more decoding expense, and are 19725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * therefore less likely to be selected over a filter with lower computational 19735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * costs. There needs to be a value in "filter_costs" for each valid filter 19745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * type (given by PNG_FILTER_VALUE_LAST), or it can be NULL if you aren't 19755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * setting the costs. Costs try to improve the speed of decompression without 19765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * unduly increasing the compressed image size. 19775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 19785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * A negative weight or cost indicates the default value is to be used, and 19795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * values in the range [0.0, 1.0) indicate the value is to remain unchanged. 19805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The default values for both weights and costs are currently 1.0, but may 19815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * change if good general weighting/cost heuristics can be found. If both 19825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * the weights and costs are set to 1.0, this degenerates the WEIGHTED method 19835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to the UNWEIGHTED method, but with added encoding time/computation. 19845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 19865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_filter_heuristics) PNGARG((png_structp png_ptr, 19875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int heuristic_method, int num_weights, png_doublep filter_weights, 19885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_doublep filter_costs)); 19895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 19905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */ 19915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 19925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Heuristic used for row filter selection. These defines should NOT be 19935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * changed. 19945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 19955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */ 19965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */ 19975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */ 19985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */ 19995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Set the library compression level. Currently, valid values range from 20015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 0 - 9, corresponding directly to the zlib compression levels 0 - 9 20025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (0 - no compression, 9 - "maximal" compression). Note that tests have 20035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shown that zlib compression levels 3-6 usually perform as well as level 9 20045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * for PNG images, and do considerably fewer caclulations. In the future, 20055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * these values may not correspond directly to the zlib compression levels. 20065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 20075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_compression_level) PNGARG((png_structp png_ptr, 20085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int level)); 20095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_compression_mem_level) 20115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, int mem_level)); 20125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_compression_strategy) 20145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, int strategy)); 20155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_compression_window_bits) 20175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, int window_bits)); 20185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_compression_method) PNGARG((png_structp png_ptr, 20205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int method)); 20215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These next functions are called for input/output, memory, and error 20235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * handling. They are in the file pngrio.c, pngwio.c, and pngerror.c, 20245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * and call standard C I/O routines such as fread(), fwrite(), and 20255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * fprintf(). These functions can be made to use other I/O routines 20265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * at run time for those applications that need to handle I/O in a 20275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * different manner by calling png_set_???_fn(). See libpng.txt for 20285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * more information. 20295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 20305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_STDIO_SUPPORTED 20325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Initialize the input/output for the PNG file to the default functions. */ 20335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_init_io) PNGARG((png_structp png_ptr, png_FILE_p fp)); 20345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 20355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Replace the (error and abort), and warning functions with user 20375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * supplied functions. If no messages are to be printed you must still 20385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * write and use replacement functions. The replacement error_fn should 20395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * still do a longjmp to the last setjmp location if you are using this 20405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * method of error handling. If error_fn or warning_fn is NULL, the 20415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * default function will be used. 20425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 20435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_error_fn) PNGARG((png_structp png_ptr, 20455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn)); 20465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Return the user pointer associated with the error functions */ 20485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_get_error_ptr) PNGARG((png_structp png_ptr)); 20495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Replace the default data output functions with a user supplied one(s). 20515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If buffered output is not used, then output_flush_fn can be set to NULL. 20525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time 20535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * output_flush_fn will be ignored (and thus can be NULL). 20545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * It is probably a mistake to use NULL for output_flush_fn if 20555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * write_data_fn is not also NULL unless you have built libpng with 20565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's 20575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * default flush function, which uses the standard *FILE structure, will 20585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * be used. 20595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 20605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_write_fn) PNGARG((png_structp png_ptr, 20615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)); 20625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Replace the default data input function with a user supplied one. */ 20645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_read_fn) PNGARG((png_structp png_ptr, 20655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp io_ptr, png_rw_ptr read_data_fn)); 20665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Return the user pointer associated with the I/O functions */ 20685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_get_io_ptr) PNGARG((png_structp png_ptr)); 20695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_read_status_fn) PNGARG((png_structp png_ptr, 20715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_read_status_ptr read_row_fn)); 20725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_write_status_fn) PNGARG((png_structp png_ptr, 20745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_write_status_ptr write_row_fn)); 20755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_MEM_SUPPORTED 20775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Replace the default memory allocation functions with user supplied one(s). */ 20785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_mem_fn) PNGARG((png_structp png_ptr, 20795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn)); 20805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Return the user pointer associated with the memory functions */ 20815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_get_mem_ptr) PNGARG((png_structp png_ptr)); 20825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 20835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 20855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_LEGACY_SUPPORTED) 20865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_read_user_transform_fn) PNGARG((png_structp 20875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_user_transform_ptr read_user_transform_fn)); 20885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 20895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ 20915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_LEGACY_SUPPORTED) 20925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_write_user_transform_fn) PNGARG((png_structp 20935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_user_transform_ptr write_user_transform_fn)); 20945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 20955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 20965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \ 20975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED) || \ 20985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_LEGACY_SUPPORTED) 20995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_user_transform_info) PNGARG((png_structp 21005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_voidp user_transform_ptr, int user_transform_depth, 21015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int user_transform_channels)); 21025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Return the user pointer associated with the user transform functions */ 21035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_get_user_transform_ptr) 21045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)); 21055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 21065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_CHUNKS_SUPPORTED 21085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_read_user_chunk_fn) PNGARG((png_structp png_ptr, 21095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)); 21105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_get_user_chunk_ptr) PNGARG((png_structp 21115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr)); 21125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 21135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_PROGRESSIVE_READ_SUPPORTED 21155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Sets the function callbacks for the push reader, and a pointer to a 21165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * user-defined structure available to the callback functions. 21175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 21185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_progressive_read_fn) PNGARG((png_structp png_ptr, 21195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp progressive_ptr, 21205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, 21215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_progressive_end_ptr end_fn)); 21225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns the user pointer associated with the push read functions */ 21245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_get_progressive_ptr) 21255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)); 21265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function to be called when data becomes available */ 21285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_process_data) PNGARG((png_structp png_ptr, 21295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_bytep buffer, png_size_t buffer_size)); 21305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function that combines rows. Not very much different than the 21325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_combine_row() call. Is this even used????? 21335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 21345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_progressive_combine_row) PNGARG((png_structp png_ptr, 21355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep old_row, png_bytep new_row)); 21365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ 21375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_malloc) PNGARG((png_structp png_ptr, 21395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 size)) PNG_ALLOCATED; 21405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_1_0_X 21425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_malloc_warn png_malloc 21435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 21445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added at libpng version 1.2.4 */ 21455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_malloc_warn) PNGARG((png_structp png_ptr, 21465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 size)) PNG_ALLOCATED; 21475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 21485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Frees a pointer allocated by png_malloc() */ 21505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_free) PNGARG((png_structp png_ptr, png_voidp ptr)); 21515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_1_0_X 21535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function to allocate memory for zlib. */ 21545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(voidpf,png_zalloc) PNGARG((voidpf png_ptr, uInt items, 21555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uInt size)); 21565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function to free memory for zlib */ 21585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_zfree) PNGARG((voidpf png_ptr, voidpf ptr)); 21595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 21605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free data that was allocated internally */ 21625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_free_data) PNGARG((png_structp png_ptr, 21635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 free_me, int num)); 21645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FREE_ME_SUPPORTED 21655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Reassign responsibility for freeing existing data, whether allocated 21665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * by libpng or by the application 21675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 21685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_data_freer) PNGARG((png_structp png_ptr, 21695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int freer, png_uint_32 mask)); 21705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 21715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Assignments for png_data_freer */ 21725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_DESTROY_WILL_FREE_DATA 1 21735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SET_WILL_FREE_DATA 1 21745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_USER_WILL_FREE_DATA 2 21755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flags for png_ptr->free_me and info_ptr->free_me */ 21765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_HIST 0x0008 21775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_ICCP 0x0010 21785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_SPLT 0x0020 21795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_ROWS 0x0040 21805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_PCAL 0x0080 21815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_SCAL 0x0100 21825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_UNKN 0x0200 21835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_LIST 0x0400 21845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_PLTE 0x1000 21855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_TRNS 0x2000 21865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_TEXT 0x4000 21875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_ALL 0x7fff 21885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */ 21895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USER_MEM_SUPPORTED 21915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_malloc_default) PNGARG((png_structp png_ptr, 21925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 size)) PNG_ALLOCATED; 21935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_free_default) PNGARG((png_structp png_ptr, 21945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp ptr)); 21955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 21965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 21975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_memcpy_check) PNGARG((png_structp png_ptr, 21985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp s1, png_voidp s2, png_uint_32 size)) PNG_DEPRECATED; 21995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_voidp,png_memset_check) PNGARG((png_structp png_ptr, 22015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp s1, int value, png_uint_32 size)) PNG_DEPRECATED; 22025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(USE_FAR_KEYWORD) /* memory model conversion function */ 22045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern void *png_far_to_near PNGARG((png_structp png_ptr,png_voidp ptr, 22055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int check)); 22065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* USE_FAR_KEYWORD */ 22075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_ERROR_TEXT 22095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Fatal error in PNG image of libpng - can't continue */ 22105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_error) PNGARG((png_structp png_ptr, 22115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp error_message)) PNG_NORETURN; 22125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The same, but the chunk name is prepended to the error string. */ 22145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_chunk_error) PNGARG((png_structp png_ptr, 22155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp error_message)) PNG_NORETURN; 22165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 22175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Fatal error in PNG image of libpng - can't continue */ 22185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_err) PNGARG((png_structp png_ptr)) PNG_NORETURN; 22195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 22205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_NO_WARNINGS 22225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Non-fatal error in libpng. Can continue, but may have a problem. */ 22235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_warning) PNGARG((png_structp png_ptr, 22245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp warning_message)); 22255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_SUPPORTED 22275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Non-fatal error in libpng, chunk name is prepended to message. */ 22285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_chunk_warning) PNGARG((png_structp png_ptr, 22295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp warning_message)); 22305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_READ_SUPPORTED */ 22315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_NO_WARNINGS */ 22325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The png_set_<chunk> functions are for storing values in the png_info_struct. 22345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Similarly, the png_get_<chunk> calls are used to read values from the 22355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_info_struct, either storing the parameters in the passed variables, or 22365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * setting pointers into the png_info_struct where the data is stored. The 22375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_get_<chunk> functions return a non-zero value if the data was available 22385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in info_ptr, or return zero and do not change any of the parameters if the 22395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * data was not available. 22405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 22415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * These functions should be used instead of directly accessing png_info 22425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * to avoid problems with future changes in the size and internal layout of 22435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * png_info_struct. 22445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 22455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns "flag" if chunk data is valid in info_ptr. */ 22465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_valid) PNGARG((png_structp png_ptr, 22475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr, png_uint_32 flag)); 22485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns number of bytes needed to hold a transformed row. */ 22505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_rowbytes) PNGARG((png_structp png_ptr, 22515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 22525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_INFO_IMAGE_SUPPORTED 22545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns row_pointers, which is an array of pointers to scanlines that was 22555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * returned from png_read_png(). 22565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 22575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_bytepp,png_get_rows) PNGARG((png_structp png_ptr, 22585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 22595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Set row_pointers, which is an array of pointers to scanlines for use 22605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * by png_write_png(). 22615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 22625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_rows) PNGARG((png_structp png_ptr, 22635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_bytepp row_pointers)); 22645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 22655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns number of color channels in image. */ 22675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte,png_get_channels) PNGARG((png_structp png_ptr, 22685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 22695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_EASY_ACCESS_SUPPORTED 22715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image width in pixels. */ 22725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32, png_get_image_width) PNGARG((png_structp 22735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image height in pixels. */ 22765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32, png_get_image_height) PNGARG((png_structp 22775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image bit_depth. */ 22805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte, png_get_bit_depth) PNGARG((png_structp 22815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image color_type. */ 22845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte, png_get_color_type) PNGARG((png_structp 22855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image filter_type. */ 22885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte, png_get_filter_type) PNGARG((png_structp 22895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image interlace_type. */ 22925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte, png_get_interlace_type) PNGARG((png_structp 22935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image compression_type. */ 22965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte, png_get_compression_type) PNGARG((png_structp 22975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 22985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image resolution in pixels per meter, from pHYs chunk data. */ 23005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32, png_get_pixels_per_meter) PNGARG((png_structp 23015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32, png_get_x_pixels_per_meter) PNGARG((png_structp 23035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32, png_get_y_pixels_per_meter) PNGARG((png_structp 23055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns pixel aspect ratio, computed from pHYs chunk data. */ 23085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 23095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(float, png_get_pixel_aspect_ratio) PNGARG((png_structp 23105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */ 23145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_int_32, png_get_x_offset_pixels) PNGARG((png_structp 23155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_int_32, png_get_y_offset_pixels) PNGARG((png_structp 23175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_int_32, png_get_x_offset_microns) PNGARG((png_structp 23195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_int_32, png_get_y_offset_microns) PNGARG((png_structp 23215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_ptr, png_infop info_ptr)); 23225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_EASY_ACCESS_SUPPORTED */ 23245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Returns pointer to signature string read from PNG header */ 23265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_bytep,png_get_signature) PNGARG((png_structp png_ptr, 23275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 23285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_bKGD_SUPPORTED 23305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_bKGD) PNGARG((png_structp png_ptr, 23315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_color_16p *background)); 23325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_bKGD_SUPPORTED 23355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_bKGD) PNGARG((png_structp png_ptr, 23365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_color_16p background)); 23375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_cHRM_SUPPORTED 23405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 23415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_cHRM) PNGARG((png_structp png_ptr, 23425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, double *white_x, double *white_y, double *red_x, 23435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double *red_y, double *green_x, double *green_y, double *blue_x, 23445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double *blue_y)); 23455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 23475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_cHRM_fixed) PNGARG((png_structp png_ptr, 23485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_fixed_point *int_white_x, png_fixed_point 23495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *int_white_y, png_fixed_point *int_red_x, png_fixed_point *int_red_y, 23505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point *int_green_x, png_fixed_point *int_green_y, png_fixed_point 23515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) *int_blue_x, png_fixed_point *int_blue_y)); 23525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_cHRM_SUPPORTED 23565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 23575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_cHRM) PNGARG((png_structp png_ptr, 23585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, double white_x, double white_y, double red_x, 23595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double red_y, double green_x, double green_y, double blue_x, double blue_y)); 23605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 23625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_cHRM_fixed) PNGARG((png_structp png_ptr, 23635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_fixed_point int_white_x, png_fixed_point int_white_y, 23645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point 23655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, 23665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_blue_y)); 23675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_gAMA_SUPPORTED 23715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 23725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_gAMA) PNGARG((png_structp png_ptr, 23735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, double *file_gamma)); 23745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_gAMA_fixed) PNGARG((png_structp png_ptr, 23765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_fixed_point *int_file_gamma)); 23775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_gAMA_SUPPORTED 23805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 23815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_gAMA) PNGARG((png_structp png_ptr, 23825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, double file_gamma)); 23835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_gAMA_fixed) PNGARG((png_structp png_ptr, 23855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_fixed_point int_file_gamma)); 23865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_hIST_SUPPORTED 23895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_hIST) PNGARG((png_structp png_ptr, 23905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_16p *hist)); 23915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_hIST_SUPPORTED 23945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_hIST) PNGARG((png_structp png_ptr, 23955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_16p hist)); 23965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 23975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 23985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_IHDR) PNGARG((png_structp png_ptr, 23995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 *width, png_uint_32 *height, 24005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int *bit_depth, int *color_type, int *interlace_method, 24015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int *compression_method, int *filter_method)); 24025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_IHDR) PNGARG((png_structp png_ptr, 24045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, 24055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int color_type, int interlace_method, int compression_method, 24065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int filter_method)); 24075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_oFFs_SUPPORTED 24095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_oFFs) PNGARG((png_structp png_ptr, 24105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, 24115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int *unit_type)); 24125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_oFFs_SUPPORTED 24155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_oFFs) PNGARG((png_structp png_ptr, 24165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y, 24175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int unit_type)); 24185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pCAL_SUPPORTED 24215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_pCAL) PNGARG((png_structp png_ptr, 24225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_charp *purpose, png_int_32 *X0, png_int_32 *X1, 24235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int *type, int *nparams, png_charp *units, png_charpp *params)); 24245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pCAL_SUPPORTED 24275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_pCAL) PNGARG((png_structp png_ptr, 24285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1, 24295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int type, int nparams, png_charp units, png_charpp params)); 24305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pHYs_SUPPORTED 24335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_pHYs) PNGARG((png_structp png_ptr, 24345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)); 24355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pHYs_SUPPORTED 24385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_pHYs) PNGARG((png_structp png_ptr, 24395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)); 24405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_PLTE) PNGARG((png_structp png_ptr, 24435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_colorp *palette, int *num_palette)); 24445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_PLTE) PNGARG((png_structp png_ptr, 24465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_colorp palette, int num_palette)); 24475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sBIT_SUPPORTED 24495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_sBIT) PNGARG((png_structp png_ptr, 24505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_color_8p *sig_bit)); 24515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sBIT_SUPPORTED 24545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sBIT) PNGARG((png_structp png_ptr, 24555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_color_8p sig_bit)); 24565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sRGB_SUPPORTED 24595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_sRGB) PNGARG((png_structp png_ptr, 24605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int *intent)); 24615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sRGB_SUPPORTED 24645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sRGB) PNGARG((png_structp png_ptr, 24655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int intent)); 24665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sRGB_gAMA_and_cHRM) PNGARG((png_structp png_ptr, 24675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int intent)); 24685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_iCCP_SUPPORTED 24715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_iCCP) PNGARG((png_structp png_ptr, 24725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_charpp name, int *compression_type, 24735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charpp profile, png_uint_32 *proflen)); 24745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Note to maintainer: profile should be png_bytepp */ 24755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_iCCP_SUPPORTED 24785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_iCCP) PNGARG((png_structp png_ptr, 24795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_charp name, int compression_type, 24805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp profile, png_uint_32 proflen)); 24815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Note to maintainer: profile should be png_bytep */ 24825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sPLT_SUPPORTED 24855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_sPLT) PNGARG((png_structp png_ptr, 24865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_sPLT_tpp entries)); 24875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sPLT_SUPPORTED 24905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sPLT) PNGARG((png_structp png_ptr, 24915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_sPLT_tp entries, int nentries)); 24925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TEXT_SUPPORTED 24955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png_get_text also returns the number of text chunks in *num_text */ 24965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_text) PNGARG((png_structp png_ptr, 24975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_textp *text_ptr, int *num_text)); 24985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 24995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* 25015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Note while png_set_text() will accept a structure whose text, 25025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * language, and translated keywords are NULL pointers, the structure 25035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * returned by png_get_text will always contain regular 25045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * zero-terminated C strings. They might be empty strings but 25055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * they will never be NULL pointers. 25065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 25075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TEXT_SUPPORTED 25095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_text) PNGARG((png_structp png_ptr, 25105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_textp text_ptr, int num_text)); 25115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_tIME_SUPPORTED 25145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_tIME) PNGARG((png_structp png_ptr, 25155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_timep *mod_time)); 25165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_tIME_SUPPORTED 25195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_tIME) PNGARG((png_structp png_ptr, 25205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_timep mod_time)); 25215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_tRNS_SUPPORTED 25245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_tRNS) PNGARG((png_structp png_ptr, 25255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_bytep *trans, int *num_trans, 25265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p *trans_values)); 25275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_tRNS_SUPPORTED 25305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_tRNS) PNGARG((png_structp png_ptr, 25315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_bytep trans, int num_trans, 25325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p trans_values)); 25335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_tRNS_SUPPORTED 25365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sCAL_SUPPORTED 25395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 25405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_sCAL) PNGARG((png_structp png_ptr, 25415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int *unit, double *width, double *height)); 25425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 25435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 25445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_sCAL_s) PNGARG((png_structp png_ptr, 25455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int *unit, png_charpp swidth, png_charpp sheight)); 25465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_sCAL_SUPPORTED */ 25495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_sCAL_SUPPORTED 25515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 25525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sCAL) PNGARG((png_structp png_ptr, 25535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int unit, double width, double height)); 25545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 25555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 25565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_sCAL_s) PNGARG((png_structp png_ptr, 25575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int unit, png_charp swidth, png_charp sheight)); 25585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_sCAL_SUPPORTED || PNG_WRITE_sCAL_SUPPORTED */ 25615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED 25635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Provide a list of chunks and how they are to be handled, if the built-in 25645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) handling or default unknown chunk handling is not desired. Any chunks not 25655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) listed will be handled in the default manner. The IHDR and IEND chunks 25665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) must not be listed. 25675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) keep = 0: follow default behaviour 25685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) = 1: do not keep 25695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) = 2: keep only if safe-to-copy 25705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) = 3: keep even if unsafe-to-copy 25715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)*/ 25725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void, png_set_keep_unknown_chunks) PNGARG((png_structp 25735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, int keep, png_bytep chunk_list, int num_chunks)); 25745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT(int,png_handle_as_unknown) PNGARG((png_structp png_ptr, png_bytep 25755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) chunk_name)); 25765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED 25785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void, png_set_unknown_chunks) PNGARG((png_structp png_ptr, 25795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)); 25805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void, png_set_unknown_chunk_location) 25815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, png_infop info_ptr, int chunk, int location)); 25825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_unknown_chunks) PNGARG((png_structp 25835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_infop info_ptr, png_unknown_chunkpp entries)); 25845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 25855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Png_free_data() will turn off the "valid" flag for anything it frees. 25875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * If you need to turn it off for a chunk that your application has freed, 25885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK); 25895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 25905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void, png_set_invalid) PNGARG((png_structp png_ptr, 25915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, int mask)); 25925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 25935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_INFO_IMAGE_SUPPORTED 25945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The "params" pointer is currently not used and is for future expansion. */ 25955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void, png_read_png) PNGARG((png_structp png_ptr, 25965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, 25975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int transforms, 25985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp params)); 25995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void, png_write_png) PNGARG((png_structp png_ptr, 26005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, 26015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int transforms, 26025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_voidp params)); 26035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 26045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 26055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Define PNG_DEBUG at compile time for debugging information. Higher 26065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * numbers for PNG_DEBUG mean more debugging information. This has 26075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * only been added since version 0.95 so it is not implemented throughout 26085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * libpng yet, but more support will be added as needed. 26095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 26105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_DEBUG 26115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if (PNG_DEBUG > 0) 26125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER) 26135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <crtdbg.h> 26145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if (PNG_DEBUG > 1) 26155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef _DEBUG 26165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define _DEBUG 26175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 26185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef png_debug 26195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE) 26205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 26215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef png_debug1 26225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1) 26235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 26245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef png_debug2 26255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_debug2(l,m,p1,p2) _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2) 26265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 26275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 26285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else /* PNG_DEBUG_FILE || !_MSC_VER */ 26295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_DEBUG_FILE 26305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_DEBUG_FILE stderr 26315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_DEBUG_FILE */ 26325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 26335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if (PNG_DEBUG > 1) 26345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on non-ISO 26355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * compilers. 26365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 26375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifdef __STDC__ 26385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef png_debug 26395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_debug(l,m) \ 26405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { \ 26415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_tabs=l; \ 26425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ 26435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \ 26445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 26455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 26465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef png_debug1 26475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_debug1(l,m,p1) \ 26485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { \ 26495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_tabs=l; \ 26505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ 26515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \ 26525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 26535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 26545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef png_debug2 26555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_debug2(l,m,p1,p2) \ 26565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { \ 26575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_tabs=l; \ 26585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \ 26595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \ 26605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 26615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 26625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# else /* __STDC __ */ 26635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef png_debug 26645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_debug(l,m) \ 26655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { \ 26665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_tabs=l; \ 26675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char format[256]; \ 26685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ 26695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ 26705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) m,PNG_STRING_NEWLINE); \ 26715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(PNG_DEBUG_FILE,format); \ 26725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 26735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 26745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef png_debug1 26755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_debug1(l,m,p1) \ 26765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { \ 26775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_tabs=l; \ 26785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char format[256]; \ 26795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ 26805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ 26815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) m,PNG_STRING_NEWLINE); \ 26825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(PNG_DEBUG_FILE,format,p1); \ 26835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 26845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 26855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifndef png_debug2 26865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_debug2(l,m,p1,p2) \ 26875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { \ 26885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_tabs=l; \ 26895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) char format[256]; \ 26905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \ 26915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \ 26925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) m,PNG_STRING_NEWLINE); \ 26935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fprintf(PNG_DEBUG_FILE,format,p1,p2); \ 26945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 26955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 26965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif /* __STDC __ */ 26975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* (PNG_DEBUG > 1) */ 26985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 26995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* _MSC_VER */ 27005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* (PNG_DEBUG > 0) */ 27015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_DEBUG */ 27025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef png_debug 27035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_debug(l, m) 27045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 27055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef png_debug1 27065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_debug1(l, m, p1) 27075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 27085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef png_debug2 27095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_debug2(l, m, p1, p2) 27105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 27115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_charp,png_get_copyright) PNGARG((png_structp png_ptr)); 27135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_charp,png_get_header_ver) PNGARG((png_structp png_ptr)); 27145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_charp,png_get_header_version) PNGARG((png_structp png_ptr)); 27155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_charp,png_get_libpng_ver) PNGARG((png_structp png_ptr)); 27165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_MNG_FEATURES_SUPPORTED 27185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_permit_mng_features) PNGARG((png_structp 27195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_uint_32 mng_features_permitted)); 27205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 27215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* For use in png_set_keep_unknown, added to version 1.2.6 */ 27235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HANDLE_CHUNK_AS_DEFAULT 0 27245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HANDLE_CHUNK_NEVER 1 27255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HANDLE_CHUNK_IF_SAFE 2 27265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HANDLE_CHUNK_ALWAYS 3 27275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added to version 1.2.0 */ 27295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_ASSEMBLER_CODE_SUPPORTED 27305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_MMX_CODE_SUPPORTED 27315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_SUPPORT_COMPILED 0x01 /* not user-settable */ 27325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU 0x02 /* not user-settable */ 27335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_READ_COMBINE_ROW 0x04 27345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_READ_INTERLACE 0x08 27355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_READ_FILTER_SUB 0x10 27365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_READ_FILTER_UP 0x20 27375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_READ_FILTER_AVG 0x40 27385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAG_MMX_READ_FILTER_PAETH 0x80 27395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ASM_FLAGS_INITIALIZED 0x80000000 /* not user-settable */ 27405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_MMX_READ_FLAGS ( PNG_ASM_FLAG_MMX_READ_COMBINE_ROW \ 27425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_ASM_FLAG_MMX_READ_INTERLACE \ 27435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_ASM_FLAG_MMX_READ_FILTER_SUB \ 27445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_ASM_FLAG_MMX_READ_FILTER_UP \ 27455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_ASM_FLAG_MMX_READ_FILTER_AVG \ 27465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_ASM_FLAG_MMX_READ_FILTER_PAETH ) 27475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_MMX_WRITE_FLAGS ( 0 ) 27485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_MMX_FLAGS ( PNG_ASM_FLAG_MMX_SUPPORT_COMPILED \ 27505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU \ 27515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_MMX_READ_FLAGS \ 27525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) | PNG_MMX_WRITE_FLAGS ) 27535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SELECT_READ 1 27555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SELECT_WRITE 2 27565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_MMX_CODE_SUPPORTED */ 27575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_1_0_X 27595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngget.c */ 27605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_mmx_flagmask) 27615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((int flag_select, int *compilerID)); 27625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngget.c */ 27645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_asm_flagmask) 27655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((int flag_select)); 27665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngget.c */ 27685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_asm_flags) 27695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)); 27705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngget.c */ 27725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_byte,png_get_mmx_bitdepth_threshold) 27735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)); 27745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngget.c */ 27765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_mmx_rowbytes_threshold) 27775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)); 27785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngset.c */ 27805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_asm_flags) 27815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, png_uint_32 asm_flags)); 27825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* pngset.c */ 27845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_mmx_thresholds) 27855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, png_byte mmx_bitdepth_threshold, 27865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 mmx_rowbytes_threshold)); 27875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_1_0_X */ 27895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_1_0_X 27915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png.c, pnggccrd.c, or pngvcrd.c */ 27925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(int,png_mmx_support) PNGARG((void)); 27935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_1_0_X */ 27945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_ASSEMBLER_CODE_SUPPORTED */ 27955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Strip the prepended error numbers ("#nnn ") from error and warning 27975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * messages before passing them to the error or warning handler. 27985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 27995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_ERROR_NUMBERS_SUPPORTED 28005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_strip_error_numbers) PNGARG((png_structp 28015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_uint_32 strip_mode)); 28025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 28035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added at libpng-1.2.6 */ 28055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_SET_USER_LIMITS_SUPPORTED 28065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_set_user_limits) PNGARG((png_structp 28075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max)); 28085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_user_width_max) PNGARG((png_structp 28095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr)); 28105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_user_height_max) PNGARG((png_structp 28115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_ptr)); 28125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 28135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Maintainer: Put new public prototypes here ^, in libpng.3, and in 28145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * project defs 28155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 28165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED 28185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* With these routines we avoid an integer divide, which will be slower on 28195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * most machines. However, it does take more operations than the corresponding 28205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * divide method, so it may be slower on a few RISC systems. There are two 28215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shifts (by 8 or 16 bits) and an addition, versus a single integer divide. 28225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 28235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * Note that the rounding factors are NOT supposed to be the same! 128 and 28245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 32768 are correct for the NODIV code; 127 and 32767 are correct for the 28255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * standard method. 28265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * 28275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ] 28285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 28295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */ 28315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_composite(composite, fg, alpha, bg) \ 28335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) * (png_uint_16)(alpha) \ 28345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) + (png_uint_16)(bg)*(png_uint_16)(255 - \ 28355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (png_uint_16)(alpha)) + (png_uint_16)128); \ 28365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (composite) = (png_byte)((temp + (temp >> 8)) >> 8); } 28375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_composite_16(composite, fg, alpha, bg) \ 28395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) { png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) * (png_uint_32)(alpha) \ 28405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) + (png_uint_32)(bg)*(png_uint_32)(65535L - \ 28415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (png_uint_32)(alpha)) + (png_uint_32)32768L); \ 28425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); } 28435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else /* Standard method using integer division */ 28455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_composite(composite, fg, alpha, bg) \ 28475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \ 28485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \ 28495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (png_uint_16)127) / 255) 28505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_composite_16(composite, fg, alpha, bg) \ 28525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (composite) = (png_uint_16)(((png_uint_32)(fg) * (png_uint_32)(alpha) + \ 28535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (png_uint_32)(bg)*(png_uint_32)(65535L - (png_uint_32)(alpha)) + \ 28545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (png_uint_32)32767) / (png_uint_32)65535L) 28555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */ 28575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Inline macros to do direct reads of bytes from the input buffer. These 28595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * require that you are using an architecture that uses PNG byte ordering 28605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (MSB first) and supports unaligned data storage. I think that PowerPC 28615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * in big-endian mode and 680x0 are the only ones that will support this. 28625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The x86 line of processors definitely do not. The png_get_int_32() 28635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * routine also assumes we are using two's complement format for negative 28645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * values, which is almost certainly true. 28655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 28665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_BIG_ENDIAN_SUPPORTED 28675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_get_uint_32(buf) ( *((png_uint_32p) (buf))) 28685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_get_uint_16(buf) ( *((png_uint_16p) (buf))) 28695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# define png_get_int_32(buf) ( *((png_int_32p) (buf))) 28705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 28715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_uint_32) PNGARG((png_bytep buf)); 28725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_16,png_get_uint_16) PNGARG((png_bytep buf)); 28735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_int_32,png_get_int_32) PNGARG((png_bytep buf)); 28745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* !PNG_READ_BIG_ENDIAN_SUPPORTED */ 28755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(png_uint_32,png_get_uint_31) 28765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr, png_bytep buf)); 28775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* No png_get_int_16 -- may be added if there's a real need for it. */ 28785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Place a 32-bit number into a buffer in PNG byte order (big-endian). 28805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 28815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_save_uint_32) 28825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_bytep buf, png_uint_32 i)); 28835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_save_int_32) 28845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_bytep buf, png_int_32 i)); 28855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Place a 16-bit number into a buffer in PNG byte order. 28875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * The parameter is declared unsigned int, not png_uint_16, 28885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * just to avoid potential problems on pre-ANSI C compilers. 28895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 28905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_save_uint_16) 28915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_bytep buf, unsigned int i)); 28925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* No png_save_int_16 -- may be added if there's a real need for it. */ 28935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* ************************************************************************* */ 28955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 28965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These next functions are used internally in the code. They generally 28975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * shouldn't be used unless you are writing code to add or replace some 28985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * functionality in libpng. More information about most functions can 28995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * be found in the files where the functions are located. 29005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 29015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Various modes of operation, that are visible to applications because 29045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * they are used for unknown chunk location. 29055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 29065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_IHDR 0x01 29075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_PLTE 0x02 29085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_IDAT 0x04 29095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_AFTER_IDAT 0x08 /* Have complete zlib datastream */ 29105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_IEND 0x10 29115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_INTERNAL 29135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* More modes of operation. Note that after an init, mode is set to 29155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * zero automatically when the structure is created. 29165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 29175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_gAMA 0x20 29185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_cHRM 0x40 29195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_sRGB 0x80 29205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_CHUNK_HEADER 0x100 29215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_WROTE_tIME 0x200 29225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_WROTE_INFO_BEFORE_PLTE 0x400 29235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND_IS_GRAY 0x800 29245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_PNG_SIGNATURE 0x1000 29255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */ 29265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flags for the transformations the PNG library does on the image data */ 29285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BGR 0x0001 29295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INTERLACE 0x0002 29305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_PACK 0x0004 29315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SHIFT 0x0008 29325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SWAP_BYTES 0x0010 29335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INVERT_MONO 0x0020 29345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_DITHER 0x0040 29355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND 0x0080 29365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_BACKGROUND_EXPAND 0x0100 29375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x0200 unused */ 29385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_16_TO_8 0x0400 29395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RGBA 0x0800 29405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EXPAND 0x1000 29415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_GAMMA 0x2000 29425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_GRAY_TO_RGB 0x4000 29435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FILLER 0x8000L 29445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_PACKSWAP 0x10000L 29455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_SWAP_ALPHA 0x20000L 29465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_STRIP_ALPHA 0x40000L 29475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_INVERT_ALPHA 0x80000L 29485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_USER_TRANSFORM 0x100000L 29495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RGB_TO_GRAY_ERR 0x200000L 29505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RGB_TO_GRAY_WARN 0x400000L 29515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_RGB_TO_GRAY 0x600000L /* two bits, RGB_TO_GRAY_ERR|WARN */ 29525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x800000L Unused */ 29535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ADD_ALPHA 0x1000000L /* Added to libpng-1.2.7 */ 29545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_EXPAND_tRNS 0x2000000L /* Added to libpng-1.2.9 */ 29555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_PREMULTIPLY_ALPHA 0x4000000L /* Added to libpng-1.2.41 */ 29565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* by volker */ 29575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x8000000L unused */ 29585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x10000000L unused */ 29595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x20000000L unused */ 29605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x40000000L unused */ 29615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flags for png_create_struct */ 29635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_STRUCT_PNG 0x0001 29645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_STRUCT_INFO 0x0002 29655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Scaling factor for filter heuristic weighting calculations */ 29675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_WEIGHT_SHIFT 8 29685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT)) 29695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COST_SHIFT 3 29705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT)) 29715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 29725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Flags for the png_ptr->flags rather than declaring a byte for each one */ 29735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001 29745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ZLIB_CUSTOM_LEVEL 0x0002 29755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ZLIB_CUSTOM_MEM_LEVEL 0x0004 29765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ZLIB_CUSTOM_WINDOW_BITS 0x0008 29775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ZLIB_CUSTOM_METHOD 0x0010 29785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ZLIB_FINISHED 0x0020 29795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ROW_INIT 0x0040 29805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_FILLER_AFTER 0x0080 29815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100 29825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200 29835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_CRITICAL_USE 0x0400 29845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800 29855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_FREE_PLTE 0x1000 29865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_FREE_TRNS 0x2000 29875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_FREE_HIST 0x4000 29885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000L 29895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000L 29905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_LIBRARY_MISMATCH 0x20000L 29915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000L 29925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000L 29935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_MALLOC_NULL_MEM_OK 0x100000L 29945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_ADD_ALPHA 0x200000L /* Added to libpng-1.2.8 */ 29955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_STRIP_ALPHA 0x400000L /* Added to libpng-1.2.8 */ 29965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x800000L unused */ 29975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x1000000L unused */ 29985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x2000000L unused */ 29995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x4000000L unused */ 30005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x8000000L unused */ 30015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x10000000L unused */ 30025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x20000000L unused */ 30035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* 0x40000000L unused */ 30045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \ 30065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_FLAG_CRC_ANCILLARY_NOWARN) 30075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \ 30095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_FLAG_CRC_CRITICAL_IGNORE) 30105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \ 30125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_FLAG_CRC_CRITICAL_MASK) 30135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Save typing and make code easier to understand */ 30155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \ 30175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) abs((int)((c1).green) - (int)((c2).green)) + \ 30185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) abs((int)((c1).blue) - (int)((c2).blue))) 30195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added to libpng-1.2.6 JB */ 30215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_ROWBYTES(pixel_bits, width) \ 30225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ((pixel_bits) >= 8 ? \ 30235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ((width) * (((png_uint_32)(pixel_bits)) >> 3)) : \ 30245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) (( ((width) * ((png_uint_32)(pixel_bits))) + 7) >> 3) ) 30255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* PNG_OUT_OF_RANGE returns true if value is outside the range 30275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * ideal-delta..ideal+delta. Each argument is evaluated twice. 30285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * "ideal" and "delta" should be constants, normally simple 30295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * integers, "value" a variable. Added to libpng-1.2.6 JB 30305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 30315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_OUT_OF_RANGE(value, ideal, delta) \ 30325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) ) 30335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Variables declared in png.c - only it needs to define PNG_NO_EXTERN */ 30355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(PNG_NO_EXTERN) || defined(PNG_ALWAYS_EXTERN) 30365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Place to hold the signature string for a PNG file. */ 30375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USE_GLOBAL_ARRAYS 30385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_EXPORT_VAR (PNG_CONST png_byte FARDATA) png_sig[8]; 30395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 30405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 30415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_NO_EXTERN */ 30425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Constant strings for known chunk types. If you need to add a chunk, 30445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * define the name here, and add an invocation of the macro in png.c and 30455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * wherever it's needed. 30465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 30475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_IHDR png_byte png_IHDR[5] = { 73, 72, 68, 82, '\0'} 30485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_IDAT png_byte png_IDAT[5] = { 73, 68, 65, 84, '\0'} 30495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_IEND png_byte png_IEND[5] = { 73, 69, 78, 68, '\0'} 30505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_PLTE png_byte png_PLTE[5] = { 80, 76, 84, 69, '\0'} 30515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_bKGD png_byte png_bKGD[5] = { 98, 75, 71, 68, '\0'} 30525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_cHRM png_byte png_cHRM[5] = { 99, 72, 82, 77, '\0'} 30535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_gAMA png_byte png_gAMA[5] = {103, 65, 77, 65, '\0'} 30545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_hIST png_byte png_hIST[5] = {104, 73, 83, 84, '\0'} 30555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_iCCP png_byte png_iCCP[5] = {105, 67, 67, 80, '\0'} 30565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_iTXt png_byte png_iTXt[5] = {105, 84, 88, 116, '\0'} 30575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_oFFs png_byte png_oFFs[5] = {111, 70, 70, 115, '\0'} 30585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_pCAL png_byte png_pCAL[5] = {112, 67, 65, 76, '\0'} 30595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sCAL png_byte png_sCAL[5] = {115, 67, 65, 76, '\0'} 30605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_pHYs png_byte png_pHYs[5] = {112, 72, 89, 115, '\0'} 30615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sBIT png_byte png_sBIT[5] = {115, 66, 73, 84, '\0'} 30625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sPLT png_byte png_sPLT[5] = {115, 80, 76, 84, '\0'} 30635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_sRGB png_byte png_sRGB[5] = {115, 82, 71, 66, '\0'} 30645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_tEXt png_byte png_tEXt[5] = {116, 69, 88, 116, '\0'} 30655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_tIME png_byte png_tIME[5] = {116, 73, 77, 69, '\0'} 30665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_tRNS png_byte png_tRNS[5] = {116, 82, 78, 83, '\0'} 30675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define PNG_zTXt png_byte png_zTXt[5] = {122, 84, 88, 116, '\0'} 30685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_USE_GLOBAL_ARRAYS 30705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_IHDR[5]; 30715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_IDAT[5]; 30725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_IEND[5]; 30735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_PLTE[5]; 30745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_bKGD[5]; 30755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_cHRM[5]; 30765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_gAMA[5]; 30775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_hIST[5]; 30785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_iCCP[5]; 30795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_iTXt[5]; 30805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_oFFs[5]; 30815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_pCAL[5]; 30825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_sCAL[5]; 30835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_pHYs[5]; 30845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_sBIT[5]; 30855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_sPLT[5]; 30865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_sRGB[5]; 30875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_tEXt[5]; 30885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_tIME[5]; 30895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_tRNS[5]; 30905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXPORT_VAR (png_byte FARDATA) png_zTXt[5]; 30915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_USE_GLOBAL_ARRAYS */ 30925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 30935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 30945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Initialize png_ptr struct for reading, and allocate any other memory. 30955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (old interface - DEPRECATED - use png_create_read_struct instead). 30965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 30975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_init) PNGARG((png_structp png_ptr)) 30985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_DEPRECATED; 30995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef png_read_init 31005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_read_init(png_ptr) png_read_init_3(&png_ptr, \ 31015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_LIBPNG_VER_STRING, png_sizeof(png_struct)); 31025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_init_3) PNGARG((png_structpp ptr_ptr, 31055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp user_png_ver, png_size_t png_struct_size)); 31065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 31075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_read_init_2) PNGARG((png_structp png_ptr, 31085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t 31095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_info_size)); 31105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_1_0_X) || defined (PNG_1_2_X) 31135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Initialize png_ptr struct for writing, and allocate any other memory. 31145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * (old interface - DEPRECATED - use png_create_write_struct instead). 31155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 31165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_init) PNGARG((png_structp png_ptr)) 31175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_DEPRECATED; 31185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#undef png_write_init 31195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define png_write_init(png_ptr) png_write_init_3(&png_ptr, \ 31205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_LIBPNG_VER_STRING, png_sizeof(png_struct)); 31215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_init_3) PNGARG((png_structpp ptr_ptr, 31245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp user_png_ver, png_size_t png_struct_size)); 31255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern PNG_EXPORT(void,png_write_init_2) PNGARG((png_structp png_ptr, 31265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t 31275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_info_size)); 31285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Allocate memory for an internal libpng struct */ 31305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_voidp png_create_struct PNGARG((int type)) PNG_PRIVATE; 31315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free memory from internal libpng struct */ 31335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_destroy_struct PNGARG((png_voidp struct_ptr)) PNG_PRIVATE; 31345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_voidp png_create_struct_2 PNGARG((int type, png_malloc_ptr 31365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) malloc_fn, png_voidp mem_ptr)) PNG_PRIVATE; 31375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_destroy_struct_2 PNGARG((png_voidp struct_ptr, 31385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_free_ptr free_fn, png_voidp mem_ptr)) PNG_PRIVATE; 31395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Free any memory that info_ptr points to and reset struct. */ 31415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_info_destroy PNGARG((png_structp png_ptr, 31425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 31435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef PNG_1_0_X 31455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function to allocate memory for zlib. */ 31465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN voidpf png_zalloc PNGARG((voidpf png_ptr, uInt items, 31475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) uInt size)) PNG_PRIVATE; 31485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function to free memory for zlib */ 31505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_zfree PNGARG((voidpf png_ptr, voidpf ptr)) PNG_PRIVATE; 31515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_SIZE_T 31535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Function to convert a sizeof an item to png_sizeof item */ 31545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_EXTERN png_size_t PNGAPI png_convert_size PNGARG((size_t size)) 31555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_PRIVATE; 31565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Next four functions are used internally as callbacks. PNGAPI is required 31595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3. 31605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 31615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void PNGAPI png_default_read_data PNGARG((png_structp png_ptr, 31635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep data, png_size_t length)) PNG_PRIVATE; 31645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_PROGRESSIVE_READ_SUPPORTED 31665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void PNGAPI png_push_fill_buffer PNGARG((png_structp png_ptr, 31675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep buffer, png_size_t length)) PNG_PRIVATE; 31685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void PNGAPI png_default_write_data PNGARG((png_structp png_ptr, 31715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep data, png_size_t length)) PNG_PRIVATE; 31725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_FLUSH_SUPPORTED 31745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_STDIO_SUPPORTED 31755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void PNGAPI png_default_flush PNGARG((png_structp png_ptr)) 31765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_PRIVATE; 31775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else /* PNG_1_0_X */ 31805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_PROGRESSIVE_READ_SUPPORTED 31815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_fill_buffer PNGARG((png_structp png_ptr, 31825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep buffer, png_size_t length)) PNG_PRIVATE; 31835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 31845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_1_0_X */ 31855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Reset the CRC variable */ 31875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_reset_crc PNGARG((png_structp png_ptr)) PNG_PRIVATE; 31885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write the "data" buffer to whatever output you are using. */ 31905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_data PNGARG((png_structp png_ptr, png_bytep data, 31915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t length)) PNG_PRIVATE; 31925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read data from whatever input you are using into the "data" buffer */ 31945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_read_data PNGARG((png_structp png_ptr, png_bytep data, 31955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t length)) PNG_PRIVATE; 31965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 31975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read bytes into buf, and update png_ptr->crc */ 31985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_crc_read PNGARG((png_structp png_ptr, png_bytep buf, 31995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t length)) PNG_PRIVATE; 32005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Decompress data in a chunk that uses compression */ 32025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_zTXt_SUPPORTED) || defined(PNG_iTXt_SUPPORTED) || \ 32035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_iCCP_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) 32045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_decompress_chunk PNGARG((png_structp png_ptr, 32055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int comp_type, png_size_t chunklength, 32065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t prefix_length, png_size_t *data_length)) PNG_PRIVATE; 32075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */ 32105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN int png_crc_finish PNGARG((png_structp png_ptr, png_uint_32 skip) 32115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_PRIVATE); 32125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read the CRC from the file and compare it to the libpng calculated CRC */ 32145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN int png_crc_error PNGARG((png_structp png_ptr)) PNG_PRIVATE; 32155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Calculate the CRC over a section of data. Note that we are only 32175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * passing a maximum of 64K on systems that have this as a memory limit, 32185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * since this is the maximum buffer size we can specify. 32195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 32205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_calculate_crc PNGARG((png_structp png_ptr, png_bytep ptr, 32215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t length)) PNG_PRIVATE; 32225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_FLUSH_SUPPORTED 32245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_flush PNGARG((png_structp png_ptr)) PNG_PRIVATE; 32255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Simple function to write the signature */ 32285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_sig PNGARG((png_structp png_ptr)) PNG_PRIVATE; 32295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write various chunks */ 32315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write the IHDR chunk, and update the png_struct with the necessary 32335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * information. 32345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 32355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_IHDR PNGARG((png_structp png_ptr, png_uint_32 width, 32365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 height, 32375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int bit_depth, int color_type, int compression_method, int filter_method, 32385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int interlace_method)) PNG_PRIVATE; 32395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_PLTE PNGARG((png_structp png_ptr, png_colorp palette, 32415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 num_pal)) PNG_PRIVATE; 32425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_IDAT PNGARG((png_structp png_ptr, png_bytep data, 32445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_size_t length)) PNG_PRIVATE; 32455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_IEND PNGARG((png_structp png_ptr)) PNG_PRIVATE; 32475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_gAMA_SUPPORTED 32495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 32505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_gAMA PNGARG((png_structp png_ptr, double file_gamma)) 32515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNG_PRIVATE; 32525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 32545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_gAMA_fixed PNGARG((png_structp png_ptr, 32555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point file_gamma)) PNG_PRIVATE; 32565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_sBIT_SUPPORTED 32605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_sBIT PNGARG((png_structp png_ptr, png_color_8p sbit, 32615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int color_type)) PNG_PRIVATE; 32625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_cHRM_SUPPORTED 32655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FLOATING_POINT_SUPPORTED 32665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_cHRM PNGARG((png_structp png_ptr, 32675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double white_x, double white_y, 32685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double red_x, double red_y, double green_x, double green_y, 32695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) double blue_x, double blue_y)) PNG_PRIVATE; 32705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 32725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_cHRM_fixed PNGARG((png_structp png_ptr, 32735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_white_x, png_fixed_point int_white_y, 32745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point 32755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, 32765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_blue_y)) PNG_PRIVATE; 32775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_sRGB_SUPPORTED 32815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_sRGB PNGARG((png_structp png_ptr, 32825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int intent)) PNG_PRIVATE; 32835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_iCCP_SUPPORTED 32865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_iCCP PNGARG((png_structp png_ptr, 32875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp name, int compression_type, 32885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp profile, int proflen)) PNG_PRIVATE; 32895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) /* Note to maintainer: profile should be png_bytep */ 32905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_sPLT_SUPPORTED 32935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_sPLT PNGARG((png_structp png_ptr, 32945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_sPLT_tp palette)) PNG_PRIVATE; 32955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 32965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 32975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_tRNS_SUPPORTED 32985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_tRNS PNGARG((png_structp png_ptr, png_bytep trans, 32995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p values, int number, int color_type)) PNG_PRIVATE; 33005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_bKGD_SUPPORTED 33035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_bKGD PNGARG((png_structp png_ptr, 33045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p values, int color_type)) PNG_PRIVATE; 33055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_hIST_SUPPORTED 33085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_hIST PNGARG((png_structp png_ptr, png_uint_16p hist, 33095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_hist)) PNG_PRIVATE; 33105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \ 33135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED) 33145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_size_t png_check_keyword PNGARG((png_structp png_ptr, 33155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp key, png_charpp new_key)) PNG_PRIVATE; 33165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_tEXt_SUPPORTED 33195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_tEXt PNGARG((png_structp png_ptr, png_charp key, 33205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp text, png_size_t text_len)) PNG_PRIVATE; 33215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_zTXt_SUPPORTED 33245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_zTXt PNGARG((png_structp png_ptr, png_charp key, 33255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp text, png_size_t text_len, int compression)) PNG_PRIVATE; 33265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_iTXt_SUPPORTED 33295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_iTXt PNGARG((png_structp png_ptr, 33305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int compression, png_charp key, png_charp lang, png_charp lang_key, 33315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp text)) PNG_PRIVATE; 33325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */ 33355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN int png_set_text_2 PNGARG((png_structp png_ptr, 33365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_textp text_ptr, int num_text)) PNG_PRIVATE; 33375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_oFFs_SUPPORTED 33405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_oFFs PNGARG((png_structp png_ptr, 33415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 x_offset, png_int_32 y_offset, int unit_type)) PNG_PRIVATE; 33425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_pCAL_SUPPORTED 33455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_pCAL PNGARG((png_structp png_ptr, png_charp purpose, 33465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_int_32 X0, png_int_32 X1, int type, int nparams, 33475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_charp units, png_charpp params)) PNG_PRIVATE; 33485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_pHYs_SUPPORTED 33515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_pHYs PNGARG((png_structp png_ptr, 33525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit, 33535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int unit_type)) PNG_PRIVATE; 33545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_tIME_SUPPORTED 33575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_tIME PNGARG((png_structp png_ptr, 33585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_timep mod_time)) PNG_PRIVATE; 33595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_sCAL_SUPPORTED 33625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_FLOATING_POINT_SUPPORTED) && !defined(PNG_NO_STDIO) 33635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_sCAL PNGARG((png_structp png_ptr, 33645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int unit, double width, double height)) PNG_PRIVATE; 33655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 33665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_FIXED_POINT_SUPPORTED 33675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_sCAL_s PNGARG((png_structp png_ptr, 33685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int unit, png_charp width, png_charp height)) PNG_PRIVATE; 33695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Called when finished processing a row of data */ 33745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_finish_row PNGARG((png_structp png_ptr)) PNG_PRIVATE; 33755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Internal use only. Called before first row of data */ 33775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_start_row PNGARG((png_structp png_ptr)) PNG_PRIVATE; 33785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GAMMA_SUPPORTED 33805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_build_gamma_table PNGARG((png_structp png_ptr)) PNG_PRIVATE; 33815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Combine a row of data, dealing with alpha, etc. if requested */ 33845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_combine_row PNGARG((png_structp png_ptr, png_bytep row, 33855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int mask)) PNG_PRIVATE; 33865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_INTERLACING_SUPPORTED 33885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Expand an interlaced row */ 33895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* OLD pre-1.0.9 interface: 33905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_interlace PNGARG((png_row_infop row_info, 33915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, int pass, png_uint_32 transformations)) PNG_PRIVATE; 33925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 33935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_interlace PNGARG((png_structp png_ptr)) PNG_PRIVATE; 33945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 33955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */ 33975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 33985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_INTERLACING_SUPPORTED 33995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Grab pixels out of a row for an interlaced pass */ 34005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_write_interlace PNGARG((png_row_infop row_info, 34015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, int pass)) PNG_PRIVATE; 34025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Unfilter a row */ 34055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_read_filter_row PNGARG((png_structp png_ptr, 34065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_row_infop row_info, png_bytep row, png_bytep prev_row, 34075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int filter)) PNG_PRIVATE; 34085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Choose the best filter to use and filter the row data */ 34105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_find_filter PNGARG((png_structp png_ptr, 34115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_row_infop row_info)) PNG_PRIVATE; 34125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Write out the filtered row. */ 34145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_write_filtered_row PNGARG((png_structp png_ptr, 34155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep filtered_row)) PNG_PRIVATE; 34165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Finish a row while reading, dealing with interlacing passes, etc. */ 34175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_read_finish_row PNGARG((png_structp png_ptr)); 34185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Initialize the row buffers, etc. */ 34205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_read_start_row PNGARG((png_structp png_ptr)) PNG_PRIVATE; 34215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Optional call to update the users info structure */ 34225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_read_transform_info PNGARG((png_structp png_ptr, 34235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 34245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* These are the functions that do the transformations */ 34265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_FILLER_SUPPORTED 34275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_filler PNGARG((png_row_infop row_info, 34285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, png_uint_32 filler, png_uint_32 flags)) PNG_PRIVATE; 34295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED 34325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_swap_alpha PNGARG((png_row_infop row_info, 34335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED 34375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_write_swap_alpha PNGARG((png_row_infop row_info, 34385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED 34425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_invert_alpha PNGARG((png_row_infop row_info, 34435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED 34475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_write_invert_alpha PNGARG((png_row_infop row_info, 34485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_WRITE_FILLER_SUPPORTED) || \ 34525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) defined(PNG_READ_STRIP_ALPHA_SUPPORTED) 34535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_strip_filler PNGARG((png_row_infop row_info, 34545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, png_uint_32 flags)) PNG_PRIVATE; 34555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED) 34585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_swap PNGARG((png_row_infop row_info, 34595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_PACKSWAP_SUPPORTED) || defined(PNG_WRITE_PACKSWAP_SUPPORTED) 34635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_packswap PNGARG((png_row_infop row_info, 34645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED 34685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN int png_do_rgb_to_gray PNGARG((png_structp png_ptr, png_row_infop 34695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) row_info, png_bytep row)) PNG_PRIVATE; 34705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED 34735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_gray_to_rgb PNGARG((png_row_infop row_info, 34745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_PACK_SUPPORTED 34785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_unpack PNGARG((png_row_infop row_info, 34795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_SHIFT_SUPPORTED 34835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_unshift PNGARG((png_row_infop row_info, png_bytep row, 34845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_8p sig_bits)) PNG_PRIVATE; 34855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED) 34885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_invert PNGARG((png_row_infop row_info, 34895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_16_TO_8_SUPPORTED 34935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_chop PNGARG((png_row_infop row_info, 34945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 34955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 34965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 34975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_DITHER_SUPPORTED 34985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_dither PNGARG((png_row_infop row_info, 34995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, png_bytep palette_lookup, 35005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep dither_lookup)) PNG_PRIVATE; 35015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# ifdef PNG_CORRECT_PALETTE_SUPPORTED 35035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_correct_palette PNGARG((png_structp png_ptr, 35045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_colorp palette, int num_palette)) PNG_PRIVATE; 35055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)# endif 35065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED) 35095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_bgr PNGARG((png_row_infop row_info, 35105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 35115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_PACK_SUPPORTED 35145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_pack PNGARG((png_row_infop row_info, 35155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, png_uint_32 bit_depth)) PNG_PRIVATE; 35165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_WRITE_SHIFT_SUPPORTED 35195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_shift PNGARG((png_row_infop row_info, png_bytep row, 35205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_8p bit_depth)) PNG_PRIVATE; 35215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_BACKGROUND_SUPPORTED 35245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GAMMA_SUPPORTED 35255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, 35265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p trans_values, png_color_16p background, 35275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p background_1, 35285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep gamma_table, png_bytep gamma_from_1, png_bytep gamma_to_1, 35295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16pp gamma_16, png_uint_16pp gamma_16_from_1, 35305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_16pp gamma_16_to_1, int gamma_shift)) PNG_PRIVATE; 35315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#else 35325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_background PNGARG((png_row_infop row_info, png_bytep row, 35335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_color_16p trans_values, png_color_16p background)) PNG_PRIVATE; 35345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_GAMMA_SUPPORTED 35385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_gamma PNGARG((png_row_infop row_info, png_bytep row, 35395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep gamma_table, png_uint_16pp gamma_16_table, 35405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int gamma_shift)) PNG_PRIVATE; 35415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_EXPAND_SUPPORTED 35445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_expand_palette PNGARG((png_row_infop row_info, 35455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, png_colorp palette, png_bytep trans, 35465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int num_trans)) PNG_PRIVATE; 35475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_expand PNGARG((png_row_infop row_info, 35485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row, png_color_16p trans_value)) PNG_PRIVATE; 35495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The following decodes the appropriate chunks, and does error correction, 35525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) * then calls the appropriate callback for the chunk if it is valid. 35535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) */ 35545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Decode the IHDR chunk */ 35565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_IHDR PNGARG((png_structp png_ptr, png_infop info_ptr, 35575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_PLTE PNGARG((png_structp png_ptr, png_infop info_ptr, 35595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)); 35605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_IEND PNGARG((png_structp png_ptr, png_infop info_ptr, 35615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)); 35625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_bKGD_SUPPORTED 35645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_bKGD PNGARG((png_structp png_ptr, png_infop info_ptr, 35655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_cHRM_SUPPORTED 35695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_cHRM PNGARG((png_structp png_ptr, png_infop info_ptr, 35705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_gAMA_SUPPORTED 35745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_gAMA PNGARG((png_structp png_ptr, png_infop info_ptr, 35755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_hIST_SUPPORTED 35795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_hIST PNGARG((png_structp png_ptr, png_infop info_ptr, 35805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_iCCP_SUPPORTED 35845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern void png_handle_iCCP PNGARG((png_structp png_ptr, png_infop info_ptr, 35855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)); 35865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_READ_iCCP_SUPPORTED */ 35875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_iTXt_SUPPORTED 35895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_iTXt PNGARG((png_structp png_ptr, png_infop info_ptr, 35905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_oFFs_SUPPORTED 35945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_oFFs PNGARG((png_structp png_ptr, png_infop info_ptr, 35955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 35965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 35975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 35985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_pCAL_SUPPORTED 35995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_pCAL PNGARG((png_structp png_ptr, png_infop info_ptr, 36005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_pHYs_SUPPORTED 36045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_pHYs PNGARG((png_structp png_ptr, png_infop info_ptr, 36055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_sBIT_SUPPORTED 36095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_sBIT PNGARG((png_structp png_ptr, png_infop info_ptr, 36105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_sCAL_SUPPORTED 36145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_sCAL PNGARG((png_structp png_ptr, png_infop info_ptr, 36155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_sPLT_SUPPORTED 36195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)extern void png_handle_sPLT PNGARG((png_structp png_ptr, png_infop info_ptr, 36205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_READ_sPLT_SUPPORTED */ 36225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_sRGB_SUPPORTED 36245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_sRGB PNGARG((png_structp png_ptr, png_infop info_ptr, 36255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_tEXt_SUPPORTED 36295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_tEXt PNGARG((png_structp png_ptr, png_infop info_ptr, 36305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_tIME_SUPPORTED 36345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_tIME PNGARG((png_structp png_ptr, png_infop info_ptr, 36355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_tRNS_SUPPORTED 36395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_tRNS PNGARG((png_structp png_ptr, png_infop info_ptr, 36405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_zTXt_SUPPORTED 36445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_zTXt PNGARG((png_structp png_ptr, png_infop info_ptr, 36455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_handle_unknown PNGARG((png_structp png_ptr, 36495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 length)) PNG_PRIVATE; 36505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_check_chunk_name PNGARG((png_structp png_ptr, 36525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep chunk_name)) PNG_PRIVATE; 36535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Handle the transformations for reading and writing */ 36555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_transformations 36565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_write_transformations 36585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_init_read_transformations 36615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_PROGRESSIVE_READ_SUPPORTED 36645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_chunk PNGARG((png_structp png_ptr, 36655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_sig PNGARG((png_structp png_ptr, 36675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_check_crc PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_crc_skip PNGARG((png_structp png_ptr, 36705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 length)) PNG_PRIVATE; 36715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_crc_finish PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_save_buffer PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_restore_buffer PNGARG((png_structp png_ptr, 36745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep buffer, png_size_t buffer_length)) PNG_PRIVATE; 36755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_IDAT PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_process_IDAT_data PNGARG((png_structp png_ptr, 36775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep buffer, png_size_t buffer_length)) PNG_PRIVATE; 36785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_process_row PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_handle_unknown PNGARG((png_structp png_ptr, 36805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 length)) PNG_PRIVATE; 36815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_have_info PNGARG((png_structp png_ptr, 36825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_have_end PNGARG((png_structp png_ptr, 36845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_have_row PNGARG((png_structp png_ptr, 36865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 36875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_end PNGARG((png_structp png_ptr, 36885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_process_some_data PNGARG((png_structp png_ptr, 36905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_read_push_finish_row 36925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)) PNG_PRIVATE; 36935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_tEXt_SUPPORTED 36945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_handle_tEXt PNGARG((png_structp png_ptr, 36955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 length)) PNG_PRIVATE; 36965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_tEXt PNGARG((png_structp png_ptr, 36975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 36985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 36995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_zTXt_SUPPORTED 37005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_handle_zTXt PNGARG((png_structp png_ptr, 37015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 length)) PNG_PRIVATE; 37025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_zTXt PNGARG((png_structp png_ptr, 37035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 37045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_READ_iTXt_SUPPORTED 37065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_handle_iTXt PNGARG((png_structp png_ptr, 37075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr, png_uint_32 length)) PNG_PRIVATE; 37085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_push_read_iTXt PNGARG((png_structp png_ptr, 37095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_infop info_ptr)) PNG_PRIVATE; 37105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */ 37135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_MNG_FEATURES_SUPPORTED 37155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_read_intrapixel PNGARG((png_row_infop row_info, 37165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 37175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_do_write_intrapixel PNGARG((png_row_infop row_info, 37185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_bytep row)) PNG_PRIVATE; 37195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_ASSEMBLER_CODE_SUPPORTED 37225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_MMX_CODE_SUPPORTED 37235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* png.c */ /* PRIVATE */ 37245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_init_mmx_flags PNGARG((png_structp png_ptr)) PNG_PRIVATE; 37255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* The following six functions will be exported in libpng-1.4.0. */ 37305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED) 37315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_uint_32 png_get_pixels_per_inch PNGARG((png_structp png_ptr, 37325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 37335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_uint_32 png_get_x_pixels_per_inch PNGARG((png_structp png_ptr, 37355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 37365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_uint_32 png_get_y_pixels_per_inch PNGARG((png_structp png_ptr, 37385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 37395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN float png_get_x_offset_inches PNGARG((png_structp png_ptr, 37415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 37425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN float png_get_y_offset_inches PNGARG((png_structp png_ptr, 37445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr)); 37455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_pHYs_SUPPORTED 37475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_uint_32 png_get_pHYs_dpi PNGARG((png_structp png_ptr, 37485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)); 37495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_pHYs_SUPPORTED */ 37505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */ 37515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Read the chunk header (length + type name) */ 37535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_uint_32 png_read_chunk_header 37545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) PNGARG((png_structp png_ptr)) PNG_PRIVATE; 37555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added at libpng version 1.2.34 */ 37575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_cHRM_SUPPORTED 37585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN int png_check_cHRM_fixed PNGARG((png_structp png_ptr, 37595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_white_x, png_fixed_point int_white_y, 37605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_red_x, png_fixed_point int_red_y, png_fixed_point 37615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int_green_x, png_fixed_point int_green_y, png_fixed_point int_blue_x, 37625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_fixed_point int_blue_y)) PNG_PRIVATE; 37635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_cHRM_SUPPORTED 37665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef PNG_CHECK_cHRM_SUPPORTED 37675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added at libpng version 1.2.34 */ 37685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_64bit_product PNGARG((long v1, long v2, 37695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) unsigned long *hi_product, unsigned long *lo_product)) PNG_PRIVATE; 37705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added at libpng version 1.2.41 */ 37745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN void png_check_IHDR PNGARG((png_structp png_ptr, 37755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 width, png_uint_32 height, int bit_depth, 37765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int color_type, int interlace_type, int compression_type, 37775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int filter_type)) PNG_PRIVATE; 37785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Added at libpng version 1.2.41 */ 37805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PNG_EXTERN png_voidp png_calloc PNGARG((png_structp png_ptr, 37815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) png_uint_32 size)); 37825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Maintainer: Put new private prototypes here ^ and in libpngpf.3 */ 37845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_INTERNAL */ 37865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifdef __cplusplus 37885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 37895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 37905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_VERSION_INFO_ONLY */ 37925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)/* Do not put anything past this line */ 37935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif /* PNG_H */ 3794