readme.txt - third_party/libpng - Git at Google

 readme.txt - for libpng 0.71

 This is the first beta version of libpng 1.0.  By beta, I mean that
 all the code for 1.0 is there, and it works on all the machines
 I have running all the tests I have devised.  However, there is
 always one more bug (at least), and I don't have many #define's in
 the code (yet) for various platforms that I do not have.  Also, I'd
 like to see if I can get the code to compile with as few warnings
 as possible.  Finally, as people use my code, they may have
 suggestions for additions that will make pnglib easier to port.

 For a detailed description on using libpng, read libpng.txt.  For
 usage information and restrictions (what little they are) on libpng,
 see png.h.  For a description on using zlib (the compression library
 used by libpng) and zlib's restrictions, see zlib.h

 I have included a make file, but you will probably have to modify it
 for your own needs.  I'm using Borland C++, running large memory
 model on Windows 3.11, but it should work on almost anything.  Support
 for medium memory model is planned, but is not in 1.0 (probably in 1.1).

 You will need zlib 0.93 to run this.  zlib is a compression
 library that is useful for more things then just png files.  If
 you need a compression library, check out zlib.h

 zlib should be available at the same place that libpng is.
 If not, it should be at ftp.uu.net in /graphics/png
 Eventually, it will be at ftp.uu.net in /pub/archiving/zip/zlib

 You will also want a copy of the PNG specification.  It should
 be available at the same place you picked up libpng.  If it is
 not there, try ftp.uu.net in the /graphics/png directory.

 This code is currently being archived at ftp.uu.net in the
 /graphics/png directory, and at ftp.group42.com in the /pub/png
 directory, and on CompuServe, Lib 20 (PNG) at GO GRAPHSUP.
 If you can't find it in any of those places, e-mail me, and I'll
 tell you where it is.

 If you have any code changes, requests, problems, etc., please e-mail
 them to me.  Also, I'd appreciate any make files or project files,
 and any modifications you needed to make to get libpng to compile,
 along with a #define variable to tell what compiler/system you are on.
 If you needed to add transformations to libpng, or wish libpng would
 provide the image in a different way, drop me a note (and code, if
 possible), so I can consider supporting the transformation.
 Finally, if you get any warning messages when compiling libpng
 (note: not zlib), and they are easy to fix, I'd appreciate the
 fix.  Please mention "libpng" somewhere in the subject line.  Thanks.

 You can reach me at:

 internet: schalnat&group42.com
 CompuServe: 75501,1625

 Please do not send me general questions about PNG.  Send them to
 the address in the specification.  At the same time, please do
 not send libpng questions to that address, send them to me.  I'll
 get them in the end anyway.  If you have a question about something
 in the PNG specification that is related to using libpng, send it
 to me.  Send me any questions that start with "I was using libpng,
 and ...".  If in doubt, send questions to me.  I'll bounce them
 to others, if necessary.

 Please do not send suggestions on how to change PNG.  We have
 been discussing PNG for 6 months now, and it is official and
 finished.  If you have suggestions for libpng, however, I'll
 gladly listen.  Even if your suggestion is not used for version
 1.0, it may be used later.

 Good luck, and happy coding.

 -Guy Eric Schalnat
  Group 42, Inc.
  Internet: schalnat@group42.com
  CompuServe: 75501,1625
  Web: www.group42.com
  FTP: ftp.group42.com
	readme.txt - for libpng 0.71

	This is the first beta version of libpng 1.0. By beta, I mean that
	all the code for 1.0 is there, and it works on all the machines
	I have running all the tests I have devised. However, there is
	always one more bug (at least), and I don't have many #define's in
	the code (yet) for various platforms that I do not have. Also, I'd
	like to see if I can get the code to compile with as few warnings
	as possible. Finally, as people use my code, they may have
	suggestions for additions that will make pnglib easier to port.

	For a detailed description on using libpng, read libpng.txt. For
	usage information and restrictions (what little they are) on libpng,
	see png.h. For a description on using zlib (the compression library
	used by libpng) and zlib's restrictions, see zlib.h

	I have included a make file, but you will probably have to modify it
	for your own needs. I'm using Borland C++, running large memory
	model on Windows 3.11, but it should work on almost anything. Support
	for medium memory model is planned, but is not in 1.0 (probably in 1.1).

	You will need zlib 0.93 to run this. zlib is a compression
	library that is useful for more things then just png files. If
	you need a compression library, check out zlib.h

	zlib should be available at the same place that libpng is.
	If not, it should be at ftp.uu.net in /graphics/png
	Eventually, it will be at ftp.uu.net in /pub/archiving/zip/zlib

	You will also want a copy of the PNG specification. It should
	be available at the same place you picked up libpng. If it is
	not there, try ftp.uu.net in the /graphics/png directory.

	This code is currently being archived at ftp.uu.net in the
	/graphics/png directory, and at ftp.group42.com in the /pub/png
	directory, and on CompuServe, Lib 20 (PNG) at GO GRAPHSUP.
	If you can't find it in any of those places, e-mail me, and I'll
	tell you where it is.

	If you have any code changes, requests, problems, etc., please e-mail
	them to me. Also, I'd appreciate any make files or project files,
	and any modifications you needed to make to get libpng to compile,
	along with a #define variable to tell what compiler/system you are on.
	If you needed to add transformations to libpng, or wish libpng would
	provide the image in a different way, drop me a note (and code, if
	possible), so I can consider supporting the transformation.
	Finally, if you get any warning messages when compiling libpng
	(note: not zlib), and they are easy to fix, I'd appreciate the
	fix. Please mention "libpng" somewhere in the subject line. Thanks.

	You can reach me at:

	internet: schalnat&group42.com
	CompuServe: 75501,1625

	Please do not send me general questions about PNG. Send them to
	the address in the specification. At the same time, please do
	not send libpng questions to that address, send them to me. I'll
	get them in the end anyway. If you have a question about something
	in the PNG specification that is related to using libpng, send it
	to me. Send me any questions that start with "I was using libpng,
	and ...". If in doubt, send questions to me. I'll bounce them
	to others, if necessary.

	Please do not send suggestions on how to change PNG. We have
	been discussing PNG for 6 months now, and it is official and
	finished. If you have suggestions for libpng, however, I'll
	gladly listen. Even if your suggestion is not used for version
	1.0, it may be used later.

	Good luck, and happy coding.

	-Guy Eric Schalnat
	Group 42, Inc.
	Internet: schalnat@group42.com
	CompuServe: 75501,1625
	Web: www.group42.com
	FTP: ftp.group42.com