======================================================================== * contrib/pngminus/README ======================================================================== PngMinus -------- (copyright Willem van Schaik, 1999) License ------- Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that copyright notice and this permission notice appear in supporting documentation. This software is provided "as is" without express or implied warranty. Some history ------------ Soon after the creation of PNG in 1995, the need was felt for a set of pnmtopng / pngtopnm utilities. Independantly Alexander Lehmann and I (Willem van Schaik) started such a project. Luckily we discovered this and merged the two together into pnmtopng.tar.gz, which is available from a/o ftp://ftp.simplesystems.org/pub/libpng/png/. These two utilities have many, many options and make use of most of the features of PNG, like gamma, alpha, sbit, text-chunks, etc. This makes the utilities quite complex and by now not anymore very maintainable. When we wrote these programs, libpng was still in an early stage. Therefore, lots of the functionality that we put in our software can now be done using transform-functions in libpng. Finally, to compile these programs, you need to have installed and compiled three libraries: libpng, zlib and netpbm. Especially the latter makes the whole setup a bit bulky. But that's unavoidable given the many features of pnmtopng. What now -------- At this moment libpng is in a very stable state and can do much of the work done in pnmtopng. Also, pnmtopng needs to be upgraded to the new interface of libpng. Hence, it is time for a rewrite from the ground up of pnmtopng and pngtopnm. This will happen in the near future (stay tuned). The new package will get a different name to distinguish it from the old one: PngPlus. To experiment a bit with the new interface of libpng, I started off with a small prototype that contains only the basic functionality. It doesn't have any of the options to read or write special chunks and it will do no gamma correction. But this makes it also a simple program that is quite easy to understand and can serve well as a template for other software developments. (By now there are of course a couple of programs, like Greg Roelofs' rpng/wpng, that can be used just as good.) Can and can not --------------- As this is the small brother of the future PngPlus, I called this fellow PngMinus. Because I started this development in good-old Turbo-C, I avoided the use the netpbm library, which requires DOS extenders. Again, another reason to call it PngMinus (minus netpbm :-). So, part of the program are some elementary routines to read / write pgm- and ppm-files. It does not read b&w pbm-files. The downside of this approach is that you can not use them on images that require blocks of memory bigger than 64k (the DOS version). For larger images you will get an out-of-memory error. As said before, PngMinus doesn't correct for gamma. When reading png-files you can do this just as well by piping the output of png2pnm to pnmgamma, one of the standard PbmPlus tools. This same scenario will most probably also be followed in the full-blown future PngPlus, with the addition of course of the possibility to create gamma-chunks when writing png-files. On the other hand it supports alpha-channels. When reading a png-image you can write the alpha-channel into a pgm-file. And when creating an RGB+A png-image, you just combine a ppm-file with a corresponding pgm-file containing the alpha-channel. When reading, transparency chunks are converted into an alpha-channel and from there on treated the same way. Finally you can opt for writing ascii or binary pgm- and ppm-files. When the bit-depth is 16, the format will always be ascii. Using it -------- To distinguish them from pnmtopng and PngPlus, the utilities are named png2pnm and pnm2png (2 instead of to). The input- and output-files can be given as parameters or through redirection. Therefore the programs can be part of a pipe. To list the options type "png2pnm -h" or "pnm2png -h". Just like Scandinavian furniture -------------------------------- You have to put it together yourself. I did test the software under MS-DOS with Turbo-C 3.0 and under RedHat Linux 4.2 with gcc. In both cases I used libpng-1.0.4 and zlib-1.1.3. Later versions should be OK, however some older libpng versions have a bug in pngmem.c when using Turbo-C 3.0 (see below). You can build it using one of the two makefiles (make -f makefile.###) or use the batch/script files pngminus.bat / pngminus.sh. This assumes that you have built the libraries in ../libpng and ../zlib. Using Linux, make sure that you have built libpng with makefile.std and not makefile.linux (also called .lnx in earlier versions of libpng). The latter creates a .so shared-library, while the PngMinus makefile assumes a normal .a static library. If you create a ../pngsuite directory and then store the basn####.png files from PngSuite (http://www.schaik.com/pngsuite/) in there, you can test in one go the proper functioning of PngMinus, see png2pnm.bat and pnm2png.bat (or the .sh versions). Warranty ------- Please, remember that this was just a small experiment to learn a few things. It will have many unforeseen features . Who said bugs? Use it when you are in need for something simple or when you want to start developing your own stuff. The Turbo bug ------------- ** pngmem.old hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L); hptr += 16L; ** pngmem.c hptr = (png_byte huge *)((long)(hptr) & 0xfffffff0L); hptr = hptr + 16L; ** ** pngmem.old png_ptr->offset_table_ptr[i] = (png_bytep)hptr; hptr += (png_uint_32)65536L; ** pngmem.c png_ptr->offset_table_ptr[i] = (png_bytep)hptr; hptr = hptr + 65536L; ** The end ------- Willem van Schaik mailto:willem@schaik.com http://www.schaik.com/png/ ------- Oct 1999 ======================================================================== * contrib/visupng/README.txt ======================================================================== Microsoft Developer Studio Build File, Format Version 6.00 for VisualPng ------------------------------------------------------------------------ Copyright 2000, Willem van Schaik. This code is released under the libpng license. For conditions of distribution and use, see the disclaimer and license in png.h As a PNG .dll demo VisualPng is finished. More features would only hinder the program's objective. However, further extensions (like support for other graphics formats) are in development. To get these, or for pre-compiled binaries, go to "http://www.schaik.com/png/visualpng.html". ------------------------------------------------------------------------ Assumes that libpng DLLs and LIBs are in ..\..\projects\msvc\win32\libpng zlib DLLs and LIBs are in ..\..\projects\msvc\win32\zlib libpng header files are in ..\..\..\libpng zlib header files are in ..\..\..\zlib the pngsuite images are in ..\pngsuite To build: 1) On the main menu Select "Build|Set Active configuration". Choose the configuration that corresponds to the library you want to test. This library must have been built using the libpng MS project located in the "..\..\mscv" subdirectory. 2) Select "Build|Clean" 3) Select "Build|Rebuild All" 4) After compiling and linking VisualPng will be started to view an image from the PngSuite directory. Press Ctrl-N (and Ctrl-V) for other images. To install: When distributing VisualPng (or a further development) the following options are available: 1) Build the program with the configuration "Win32 LIB" and you only need to include the executable from the ./lib directory in your distribution. 2) Build the program with the configuration "Win32 DLL" and you need to put in your distribution the executable from the ./dll directory and the dll's libpng1.dll, zlib.dll and msvcrt.dll. These need to be in the user's PATH. Willem van Schaik Calgary, June 6th 2000 P.S. VisualPng was written based on preliminary work of: - Simon-Pierre Cadieux - Glenn Randers-Pehrson - Greg Roelofs ======================================================================== * projects/visualc71/README.txt ======================================================================== Microsoft Developer Studio Project File, Format Version 7.10 for libpng. Copyright (C) 2004 Simon-Pierre Cadieux. This code is released under the libpng license. For conditions of distribution and use, see copyright notice in png.h NOTE: This project will be removed from libpng-1.5.0. It has been replaced with the "vstudio" project. Assumptions: * The libpng source files are in ..\.. * The zlib source files are in ..\..\..\zlib * The zlib project file is in . /* Warning: This is until the zlib project files get intergrated into the next zlib release. The final zlib project directory will then be ..\..\..\zlib\projects\visualc71. */ To use: 1) On the main menu, select "File | Open Solution". Open "libpng.sln". 2) Display the Solution Explorer view (Ctrl+Alt+L) 3) Set one of the project as the StartUp project. If you just want to build the binaries set "libpng" as the startup project (Select "libpng" tree view item + Project | Set as StartUp project). If you want to build and test the binaries set it to "pngtest" (Select "pngtest" tree view item + Project | Set as StartUp project) 4) Select "Build | Configuration Manager...". Choose the configuration you wish to build. 5) Select "Build | Clean Solution". 6) Select "Build | Build Solution (Ctrl-Shift-B)" This project builds the libpng binaries as follows: * Win32_DLL_Release\libpng15.dll DLL build * Win32_DLL_Debug\libpng15d.dll DLL build (debug version) * Win32_DLL_VB\libpng15vb.dll DLL build for Visual Basic, using stdcall * Win32_LIB_Release\libpng.lib static build * Win32_LIB_Debug\libpngd.lib static build (debug version) Notes: If you change anything in the source files, or select different compiler settings, please change the DLL name to something different than any of the above names. Also, make sure that in your "pngusr.h" you define PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX according to the instructions provided in "pngconf.h". All DLLs built by this project use the Microsoft dynamic C runtime library MSVCR71.DLL (MSVCR71D.DLL for debug versions). If you distribute any of the above mentioned libraries you may have to include this DLL in your package. For a list of files that are redistributable in Visual Studio see $(VCINSTALLDIR)\redist.txt. ======================================================================== * projects/visualc71/README_zlib.txt ======================================================================== /* WARNING: This file was put in the LibPNG distribution for convenience only. It is expected to be part of the next zlib release under "projects\visualc71\README.txt." */ Microsoft Developer Studio Project File, Format Version 7.10 for zlib. Copyright (C) 2004 Simon-Pierre Cadieux. Copyright (C) 2004 Cosmin Truta. This code is released under the libpng license. For conditions of distribution and use, see copyright notice in zlib.h. NOTE: This project will be removed from libpng-1.5.0. It has been replaced with the "vstudio" project. To use: 1) On the main menu, select "File | Open Solution". Open "zlib.sln". 2) Display the Solution Explorer view (Ctrl+Alt+L) 3) Set one of the project as the StartUp project. If you just want to build the binaries set "zlib" as the startup project (Select "zlib" tree view item + Project | Set as StartUp project). If you want to build and test the binaries set it to "example" (Select "example" tree view item + Project | Set as StartUp project), If you want to build the minigzip utility set it to "minigzip" (Select "minigzip" tree view item + Project | Set as StartUp project 4) Select "Build | Configuration Manager...". Choose the configuration you wish to build. 5) Select "Build | Clean Solution". 6) Select "Build | Build Solution (Ctrl-Shift-B)" This project builds the zlib binaries as follows: * Win32_DLL_Release\zlib1.dll DLL build * Win32_DLL_Debug\zlib1d.dll DLL build (debug version) * Win32_LIB_Release\zlib.lib static build * Win32_LIB_Debug\zlibd.lib static build (debug version) ======================================================================== * projects/vstudio/readme.txt ======================================================================== VisualStudio instructions libpng version 1.5.13 - September 27, 2012 Copyright (c) 1998-2010 Glenn Randers-Pehrson This code is released under the libpng license. For conditions of distribution and use, see the disclaimer and license in png.h This directory contains support for building libpng under MicroSoft VisualStudio 2010. It may also work under later versions of VisualStudio. You should be familiar with VisualStudio before using this directory. Initial preparations ==================== You must enter some information in zlib.props before attempting to build with this 'solution'. Please read and edit zlib.props first. You will probably not be familiar with the contents of zlib.props - do not worry, it is mostly harmless. This is all you need to do to build the 'release' and 'release library' configurations. Debugging ========= The release configurations default to /Ox optimization. Full debugging information is produced (in the .pdb), but if you encounter a problem the optimization may make it difficult to debug. Simply rebuild with a lower optimization level (e.g. /Od.) Linking your application ======================== Normally you should link against the 'release' configuration. This builds a DLL for libpng 1.5 with the default runtime options used by Visual Studio 2010. In particular the runtime library is the "MultiThreaded DLL" version. If you use Visual Studio defaults to build your application you will have no problems. If you don't use the Visual Studio defaults your application must still be built with the default runtime option (/MD). If, for some reason, it is not then your application will crash inside libpng15.dll as soon as libpng tries to read from a file handle you pass in. If you do not want to use the DLL, for example for a very small application, the 'release library' configuration may be more appropriate. This is built with a non-standard runtime library - the "MultiThreaded" version. When you build your application it must be compiled with this option (/MT), otherwise it will not build (if you are lucky) or crash (if you are not.) Stop reading here ================= You have enough information to build a working application. Debug versions have limited support =================================== This solution includes limited support for debug versions of libpng. You do not need these unless your own solution itself uses debug builds (it is far more effective to debug on the release builds, there is no point building a special debug build.) The debug build of libpng is minimally supported. Support for debug builds of zlib is also minimal. You really don't want to do this. ======================================================================== * LICENSE ======================================================================== This copy of the libpng notices is provided for your convenience. In case of any discrepancy between this copy and the notices in the file png.h that is included in the libpng distribution, the latter shall prevail. COPYRIGHT NOTICE, DISCLAIMER, and LICENSE: If you modify libpng you may insert additional notices immediately following this sentence. This code is released under the libpng license. libpng versions 1.2.6, August 15, 2004, through 1.5.13, September 27, 2012, are Copyright (c) 2004, 2006-2012 Glenn Randers-Pehrson, and are distributed according to the same disclaimer and license as libpng-1.2.5 with the following individual added to the list of Contributing Authors Cosmin Truta libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are Copyright (c) 2000-2002 Glenn Randers-Pehrson, 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 Gilles Vollant 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. libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are Copyright (c) 1998, 1999 Glenn Randers-Pehrson, 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 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 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. 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). Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a certification mark of the Open Source Initiative. Glenn Randers-Pehrson glennrp at users.sourceforge.net September 27, 2012 ======================================================================== * contrib/gregbook/COPYING ======================================================================== GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. This General Public License applies to most of the Free Software Foundation's software and to any other program whose authors commit to using it. (Some other Free Software Foundation software is covered by the GNU Library General Public License instead.) You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. Our General Public Licenses are designed to make sure that you have the freedom to distribute copies of free software (and charge for this service if you wish), that you receive source code or can get it if you want it, that you can change the software or use pieces of it in new free programs; and that you know you can do these things. To protect your rights, we need to make restrictions that forbid anyone to deny you these rights or to ask you to surrender the rights. These restrictions translate to certain responsibilities for you if you distribute copies of the software, or if you modify it. For example, if you distribute copies of such a program, whether gratis or for a fee, you must give the recipients all the rights that you have. 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To prevent this, we have made it clear that any patent must be licensed for everyone's free use or not licensed at all. The precise terms and conditions for copying, distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. This License applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License. The "Program", below, refers to any such program or work, and a "work based on the Program" means either the Program or any derivative work under copyright law: that is to say, a work containing the Program or a portion of it, either verbatim or with modifications and/or translated into another language. (Hereinafter, translation is included without limitation in the term "modification".) Each licensee is addressed as "you". 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You may copy and distribute the Program (or a work based on it, under Section 2) in object code or executable form under the terms of Sections 1 and 2 above provided that you also do one of the following: a) Accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, b) Accompany it with a written offer, valid for at least three years, to give any third party, for a charge no more than your cost of physically performing source distribution, a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Sections 1 and 2 above on a medium customarily used for software interchange; or, c) Accompany it with the information you received as to the offer to distribute corresponding source code. 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If the distribution and/or use of the Program is restricted in certain countries either by patents or by copyrighted interfaces, the original copyright holder who places the Program under this License may add an explicit geographical distribution limitation excluding those countries, so that distribution is permitted only in or among countries not thus excluded. In such case, this License incorporates the limitation as if written in the body of this License. 9. The Free Software Foundation may publish revised and/or new versions of the General Public License from time to time. Such new versions will be similar in spirit to the present version, but may differ in detail to address new problems or concerns. Each version is given a distinguishing version number. If the Program specifies a version number of this License which applies to it and "any later version", you have the option of following the terms and conditions either of that version or of any later version published by the Free Software Foundation. If the Program does not specify a version number of this License, you may choose any version ever published by the Free Software Foundation. 10. If you wish to incorporate parts of the Program into other free programs whose distribution conditions are different, write to the author to ask for permission. For software which is copyrighted by the Free Software Foundation, write to the Free Software Foundation; we sometimes make exceptions for this. Our decision will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software generally. NO WARRANTY 11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. END OF TERMS AND CONDITIONS How to Apply These Terms to Your New Programs If you develop a new program, and you want it to be of the greatest possible use to the public, the best way to achieve this is to make it free software which everyone can redistribute and change under these terms. To do so, attach the following notices to the program. It is safest to attach them to the start of each source file to most effectively convey the exclusion of warranty; and each file should have at least the "copyright" line and a pointer to where the full notice is found. Copyright (C) This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Also add information on how to contact you by electronic and paper mail. If the program is interactive, make it output a short notice like this when it starts in an interactive mode: Gnomovision version 69, Copyright (C) year name of author Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'. This is free software, and you are welcome to redistribute it under certain conditions; type `show c' for details. The hypothetical commands `show w' and `show c' should show the appropriate parts of the General Public License. Of course, the commands you use may be called something other than `show w' and `show c'; they could even be mouse-clicks or menu items--whatever suits your program. You should also get your employer (if you work as a programmer) or your school, if any, to sign a "copyright disclaimer" for the program, if necessary. Here is a sample; alter the names: Yoyodyne, Inc., hereby disclaims all copyright interest in the program `Gnomovision' (which makes passes at compilers) written by James Hacker. , 1 April 1989 Ty Coon, President of Vice This General Public License does not permit incorporating your program into proprietary programs. If your program is a subroutine library, you may consider it more useful to permit linking proprietary applications with the library. If this is what you want to do, use the GNU Library General Public License instead of this License. ======================================================================== * contrib/gregbook/LICENSE ======================================================================== --------------------------------------------------------------------------- Copyright (c) 1998-2008 Greg Roelofs. All rights reserved. This software is provided "as is," without warranty of any kind, express or implied. In no event shall the author or contributors be held liable for any damages arising in any way from the use of this software. The contents of this file are DUAL-LICENSED. You may modify and/or redistribute this software according to the terms of one of the following two licenses (at your option): LICENSE 1 ("BSD-like with advertising clause"): Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. Redistributions of source code must retain the above copyright notice, disclaimer, and this list of conditions. 2. Redistributions in binary form must reproduce the above copyright notice, disclaimer, and this list of conditions in the documenta- tion and/or other materials provided with the distribution. 3. All advertising materials mentioning features or use of this software must display the following acknowledgment: This product includes software developed by Greg Roelofs and contributors for the book, "PNG: The Definitive Guide," published by O'Reilly and Associates. LICENSE 2 (GNU GPL v2 or later): This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA ---------------------------------------------------------------------------