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[libpng16] Updated manual to mention that warnings about iTXt language tag

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and translated keyword are no longer issued when these are empty, which
is allowed by the PNG specification.
This commit is contained in:
Glenn Randers-Pehrson 2013-07-14 18:34:13 -05:00
parent b23afad4a1
commit 2b87a54d07
2 changed files with 21 additions and 13 deletions
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12
libpng-manual.txt
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@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.3rc01 - July 11, 2013
libpng version 1.6.3rc02 - July 14, 2013
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.3rc01 - July 11, 2013
libpng versions 0.97, January 1998, through 1.6.3rc02 - July 14, 2013
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -5019,6 +5019,10 @@ even if the image only contains gray pixels, only RGB profiles may appear
in images with color type 2, 3, or 6, is now enforced. The sRGB chunk
is allowed to appear in images with any color type.
Prior to libpng-1.6.0 a warning would be issued if the iTXt chunk contained
an empty language field or an empty translated keyword. Both of these
are allowed by the PNG specification, so these warnings are no longer issued.
The library now issues an error if the application attempts to set a
transform after it calls png_read_update_info().
@ -5218,13 +5222,13 @@ Other rules can be inferred by inspecting the libpng source.
XVI. Y2K Compliance in libpng
July 11, 2013
July 14, 2013
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.3rc01 are Y2K compliant. It is my belief that earlier
upward through 1.6.3rc02 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer

22
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "July 11, 2013"
.TH LIBPNG 3 "July 14, 2013"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.3rc01
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.3rc02
.SH SYNOPSIS
\fB
#include <png.h>\fP
@ -504,7 +504,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.3rc01 - July 11, 2013
libpng version 1.6.3rc02 - July 14, 2013
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -515,7 +515,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.3rc01 - July 11, 2013
libpng versions 0.97, January 1998, through 1.6.3rc02 - July 14, 2013
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -5524,6 +5524,10 @@ even if the image only contains gray pixels, only RGB profiles may appear
in images with color type 2, 3, or 6, is now enforced. The sRGB chunk
is allowed to appear in images with any color type.
Prior to libpng-1.6.0 a warning would be issued if the iTXt chunk contained
an empty language field or an empty translated keyword. Both of these
are allowed by the PNG specification, so these warnings are no longer issued.
The library now issues an error if the application attempts to set a
transform after it calls png_read_update_info().
@ -5723,13 +5727,13 @@ Other rules can be inferred by inspecting the libpng source.
.SH XVI. Y2K Compliance in libpng
July 11, 2013
July 14, 2013
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.3rc01 are Y2K compliant. It is my belief that earlier
upward through 1.6.3rc02 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer
@ -6001,7 +6005,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.6.3rc01 - July 11, 2013:
Libpng version 1.6.3rc02 - July 14, 2013:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -6024,7 +6028,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.6.3rc01, July 11, 2013, are
libpng versions 1.2.6, August 15, 2004, through 1.6.3rc02, July 14, 2013, are
Copyright (c) 2004,2006-2007 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
@ -6123,7 +6127,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
July 11, 2013
July 14, 2013
.\" end of man page