/* png.h - header file for PNG reference library * * libpng version 1.6.43 * * Copyright (c) 2018-2024 Cosmin Truta * Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson * Copyright (c) 1996-1997 Andreas Dilger * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. * * This code is released under the libpng license. (See LICENSE, below.) * * Authors and maintainers: * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat * libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger * libpng versions 0.97, January 1998, through 1.6.35, July 2018: * Glenn Randers-Pehrson * libpng versions 1.6.36, December 2018, through 1.6.43, February 2024: * Cosmin Truta * See also "Contributing Authors", below. */ /* * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE * ========================================= * * PNG Reference Library License version 2 * --------------------------------------- * * * Copyright (c) 1995-2024 The PNG Reference Library Authors. * * Copyright (c) 2018-2024 Cosmin Truta. * * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson. * * Copyright (c) 1996-1997 Andreas Dilger. * * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. * * The software is supplied "as is", without warranty of any kind, * express or implied, including, without limitation, the warranties * of merchantability, fitness for a particular purpose, title, and * non-infringement. In no event shall the Copyright owners, or * anyone distributing the software, be liable for any damages or * other liability, whether in contract, tort or otherwise, arising * from, out of, or in connection with the software, or the use or * other dealings in the software, even if advised of the possibility * of such damage. * * Permission is hereby granted to use, copy, modify, and distribute * this software, or portions hereof, for any purpose, without fee, * subject to the following restrictions: * * 1. The origin of this software must not be misrepresented; you * must not claim that you wrote the original software. If you * use this software in a product, an acknowledgment in the product * documentation would be appreciated, but is not required. * * 2. Altered source versions must be plainly marked as such, and must * not be misrepresented as being the original software. * * 3. This Copyright notice may not be removed or altered from any * source or altered source distribution. * * * PNG Reference Library License version 1 (for libpng 0.5 through 1.6.35) * ----------------------------------------------------------------------- * * libpng versions 1.0.7, July 1, 2000, through 1.6.35, July 15, 2018 are * Copyright (c) 2000-2002, 2004, 2006-2018 Glenn Randers-Pehrson, are * derived from libpng-1.0.6, and are distributed according to the same * disclaimer and license as libpng-1.0.6 with the following individuals * added to the list of Contributing Authors: * * Simon-Pierre Cadieux * Eric S. Raymond * Mans Rullgard * Cosmin Truta * Gilles Vollant * James Yu * Mandar Sahastrabuddhe * Google Inc. * Vadim Barkov * * and with the following additions to the disclaimer: * * There is no warranty against interference with your enjoyment of * the library or against infringement. There is no warranty that our * efforts or the library will fulfill any of your particular purposes * or needs. This library is provided with all faults, and the entire * risk of satisfactory quality, performance, accuracy, and effort is * with the user. * * Some files in the "contrib" directory and some configure-generated * files that are distributed with libpng have other copyright owners, and * are released under other open source licenses. * * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are * Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from * libpng-0.96, and are distributed according to the same disclaimer and * license as libpng-0.96, with the following individuals added to the * list of Contributing Authors: * * Tom Lane * Glenn Randers-Pehrson * Willem van Schaik * * libpng versions 0.89, June 1996, through 0.96, May 1997, are * Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88, * and are distributed according to the same disclaimer and license as * libpng-0.88, with the following individuals added to the list of * Contributing Authors: * * John Bowler * Kevin Bracey * Sam Bushell * Magnus Holmgren * Greg Roelofs * Tom Tanner * * Some files in the "scripts" directory have other copyright owners, * but are released under this license. * * libpng versions 0.5, May 1995, through 0.88, January 1996, are * Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc. * * For the purposes of this copyright and license, "Contributing Authors" * is defined as the following set of individuals: * * Andreas Dilger * Dave Martindale * Guy Eric Schalnat * Paul Schmidt * Tim Wegner * * The PNG Reference Library is supplied "AS IS". The Contributing * Authors and Group 42, Inc. disclaim all warranties, expressed or * implied, including, without limitation, the warranties of * merchantability and of fitness for any purpose. The Contributing * Authors and Group 42, Inc. assume no liability for direct, indirect, * incidental, special, exemplary, or consequential damages, which may * result from the use of the PNG Reference Library, even if advised of * the possibility of such damage. * * Permission is hereby granted to use, copy, modify, and distribute this * source code, or portions hereof, for any purpose, without fee, subject * to the following restrictions: * * 1. The origin of this source code must not be misrepresented. * * 2. Altered versions must be plainly marked as such and must not * be misrepresented as being the original source. * * 3. This Copyright notice may not be removed or altered from any * source or altered source distribution. * * The Contributing Authors and Group 42, Inc. specifically permit, * without fee, and encourage the use of this source code as a component * to supporting the PNG file format in commercial products. If you use * this source code in a product, acknowledgment is not required but would * be appreciated. * * END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE. * * TRADEMARK * ========= * * The name "libpng" has not been registered by the Copyright owners * as a trademark in any jurisdiction. However, because libpng has * been distributed and maintained world-wide, continually since 1995, * the Copyright owners claim "common-law trademark protection" in any * jurisdiction where common-law trademark is recognized. */ /* * A "png_get_copyright" function is available, for convenient use in "about" * boxes and the like: * * printf("%s", png_get_copyright(NULL)); * * Also, the PNG logo (in PNG format, of course) is supplied in the * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31). */ /* * The contributing authors would like to thank all those who helped * with testing, bug fixes, and patience. This wouldn't have been * possible without all of you. * * Thanks to Frank J. T. Wojcik for helping with the documentation. */ /* Note about libpng version numbers: * * Due to various miscommunications, unforeseen code incompatibilities * and occasional factors outside the authors' control, version numbering * on the library has not always been consistent and straightforward. * The following table summarizes matters since version 0.89c, which was * the first widely used release: * * source png.h png.h shared-lib * version string int version * ------- ------ ----- ---------- * 0.89c "1.0 beta 3" 0.89 89 1.0.89 * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90] * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95] * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96] * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97] * 0.97c 0.97 97 2.0.97 * 0.98 0.98 98 2.0.98 * 0.99 0.99 98 2.0.99 * 0.99a-m 0.99 99 2.0.99 * 1.00 1.00 100 2.1.0 [100 should be 10000] * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000] * 1.0.1 png.h string is 10001 2.1.0 * 1.0.1a-e identical to the 10002 from here on, the shared library * 1.0.2 source version) 10002 is 2.V where V is the source code * 1.0.2a-b 10003 version, except as noted. * 1.0.3 10003 * 1.0.3a-d 10004 * 1.0.4 10004 * 1.0.4a-f 10005 * 1.0.5 (+ 2 patches) 10005 * 1.0.5a-d 10006 * 1.0.5e-r 10100 (not source compatible) * 1.0.5s-v 10006 (not binary compatible) * 1.0.6 (+ 3 patches) 10006 (still binary incompatible) * 1.0.6d-f 10007 (still binary incompatible) * 1.0.6g 10007 * 1.0.6h 10007 10.6h (testing xy.z so-numbering) * 1.0.6i 10007 10.6i * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0) * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible) * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible) * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible) * 1.0.7 1 10007 (still compatible) * ... * 1.0.69 10 10069 10.so.0.69[.0] * ... * 1.2.59 13 10259 12.so.0.59[.0] * ... * 1.4.20 14 10420 14.so.0.20[.0] * ... * 1.5.30 15 10530 15.so.15.30[.0] * ... * 1.6.43 16 10643 16.so.16.43[.0] * * Henceforth the source version will match the shared-library major and * minor numbers; the shared-library major version number will be used for * changes in backward compatibility, as it is intended. * The PNG_LIBPNG_VER macro, which is not used within libpng but is * available for applications, is an unsigned integer of the form XYYZZ * corresponding to the source version X.Y.Z (leading zeros in Y and Z). * Beta versions were given the previous public release number plus a * letter, until version 1.0.6j; from then on they were given the upcoming * public release number plus "betaNN" or "rcNN". * * Binary incompatibility exists only when applications make direct access * to the info_ptr or png_ptr members through png.h, and the compiled * application is loaded with a different version of the library. * * See libpng.txt or libpng.3 for more information. The PNG specification * is available as a W3C Recommendation and as an ISO/IEC Standard; see * <https://www.w3.org/TR/2003/REC-PNG-20031110/> */ #ifndef PNG_H #define PNG_H /* This is not the place to learn how to use libpng. The file libpng-manual.txt * describes how to use libpng, and the file example.c summarizes it * with some code on which to build. This file is useful for looking * at the actual function definitions and structure components. If that * file has been stripped from your copy of libpng, you can find it at * <http://www.libpng.org/pub/png/libpng-manual.txt> * * If you just need to read a PNG file and don't want to read the documentation * skip to the end of this file and read the section entitled 'simplified API'. */ /* Version information for png.h - this should match the version in png.c */ #define PNG_LIBPNG_VER_STRING … #define PNG_HEADER_VERSION_STRING … /* The versions of shared library builds should stay in sync, going forward */ #define PNG_LIBPNG_VER_SHAREDLIB … #define PNG_LIBPNG_VER_SONUM … #define PNG_LIBPNG_VER_DLLNUM … /* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */ #define PNG_LIBPNG_VER_MAJOR … #define PNG_LIBPNG_VER_MINOR … #define PNG_LIBPNG_VER_RELEASE … /* This should be zero for a public release, or non-zero for a * development version. */ #define PNG_LIBPNG_VER_BUILD … /* Release Status */ #define PNG_LIBPNG_BUILD_ALPHA … #define PNG_LIBPNG_BUILD_BETA … #define PNG_LIBPNG_BUILD_RC … #define PNG_LIBPNG_BUILD_STABLE … #define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK … /* Release-Specific Flags */ #define PNG_LIBPNG_BUILD_PATCH … #define PNG_LIBPNG_BUILD_PRIVATE … #define PNG_LIBPNG_BUILD_SPECIAL … #define PNG_LIBPNG_BUILD_BASE_TYPE … /* Careful here. At one time, Guy wanted to use 082, but that * would be octal. We must not include leading zeros. * Versions 0.7 through 1.0.0 were in the range 0 to 100 here * (only version 1.0.0 was mis-numbered 100 instead of 10000). * From version 1.0.1 it is: * XXYYZZ, where XX=major, YY=minor, ZZ=release */ #define PNG_LIBPNG_VER … /* Library configuration: these options cannot be changed after * the library has been built. */ #ifndef PNGLCONF_H /* If pnglibconf.h is missing, you can * copy scripts/pnglibconf.h.prebuilt to pnglibconf.h */ # include "pnglibconf.h" #endif #ifndef PNG_VERSION_INFO_ONLY /* Machine specific configuration. */ # include "pngconf.h" #endif /* * Added at libpng-1.2.8 * * Ref MSDN: Private as priority over Special * VS_FF_PRIVATEBUILD File *was not* built using standard release * procedures. If this value is given, the StringFileInfo block must * contain a PrivateBuild string. * * VS_FF_SPECIALBUILD File *was* built by the original company using * standard release procedures but is a variation of the standard * file of the same version number. If this value is given, the * StringFileInfo block must contain a SpecialBuild string. */ #ifdef PNG_USER_PRIVATEBUILD /* From pnglibconf.h */ #define PNG_LIBPNG_BUILD_TYPE … #else # ifdef PNG_LIBPNG_SPECIALBUILD #define PNG_LIBPNG_BUILD_TYPE … # else #define PNG_LIBPNG_BUILD_TYPE … # endif #endif #ifndef PNG_VERSION_INFO_ONLY /* Inhibit C++ name-mangling for libpng functions but not for system calls. */ #ifdef __cplusplus extern … #endif #endif /* PNG_VERSION_INFO_ONLY */ /* Do not put anything past this line */ #endif /* PNG_H */
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