mewin/libpng
1
0
Fork 0
mirror of https://git.code.sf.net/p/libpng/code.git synced 2025-07-10 18:04:09 +02:00
Code Issues Projects Releases Wiki Activity

[libpng17] Updated documentation about sCAL_s support.

Browse Source
This commit is contained in:
Glenn Randers-Pehrson 2014-02-01 11:14:06 -06:00
parent 302c58b8cf
commit ae14dcd404
2 changed files with 24 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
libpng-manual.txt
View File

@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.7.0beta30 - January 30, 2014
libpng version 1.7.0beta30 - February 1, 2014
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 1.7.0beta30 - January 30, 2014
libpng versions 0.97, January 1998, through 1.7.0beta30 - February 1, 2014
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -4392,6 +4392,9 @@ png_set_error_fn(), which is essentially the same function, but with a new
name to force compilation errors with applications that try to use the old
method.
Support for the sCAL, iCCP, iTXt, and sPLT chunks was added at libpng-1.0.6;
however, iTXt support was not enabled by default.
Starting with version 1.0.7, you can find out which version of the library
you are using at run-time:
@ -4725,7 +4728,10 @@ and the accuracy of PNG fixed point values is insufficient for
representation of these values. Consequently a "string" API
(png_get_sCAL_s and png_set_sCAL_s) is the only reliable way of reading
arbitrary sCAL chunks in the absence of either the floating point API or
internal floating point calculations.
internal floating point calculations. Starting with libpng-1.5.0, both
of these functions are present when PNG_sCAL_SUPPORTED is defined. Prior
to libpng-1.5.0, their presence also depended upon PNG_FIXED_POINT_SUPPORTED
being defined and PNG_FLOATING_POINT_SUPPORTED not being defined.
Applications no longer need to include the optional distribution header
file pngusr.h or define the corresponding macros during application
@ -5264,7 +5270,7 @@ Other rules can be inferred by inspecting the libpng source.
XVII. Y2K Compliance in libpng
January 30, 2014
February 1, 2014
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.

22
libpng.3
View File

@ -1,4 +1,4 @@
.TH LIBPNG 3 "January 30, 2014"
.TH LIBPNG 3 "February 1, 2014"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.7.0beta30
.SH SYNOPSIS
@ -494,7 +494,7 @@ 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 1.7.0beta30 - January 30, 2014
libpng version 1.7.0beta30 - February 1, 2014
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -505,7 +505,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.7.0beta30 - January 30, 2014
libpng versions 0.97, January 1998, through 1.7.0beta30 - February 1, 2014
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -4887,6 +4887,9 @@ png_set_error_fn(), which is essentially the same function, but with a new
name to force compilation errors with applications that try to use the old
method.
Support for the sCAL, iCCP, iTXt, and sPLT chunks was added at libpng-1.0.6;
however, iTXt support was not enabled by default.
Starting with version 1.0.7, you can find out which version of the library
you are using at run-time:
@ -5220,7 +5223,10 @@ and the accuracy of PNG fixed point values is insufficient for
representation of these values. Consequently a "string" API
(png_get_sCAL_s and png_set_sCAL_s) is the only reliable way of reading
arbitrary sCAL chunks in the absence of either the floating point API or
internal floating point calculations.
internal floating point calculations. Starting with libpng-1.5.0, both
of these functions are present when PNG_sCAL_SUPPORTED is defined. Prior
to libpng-1.5.0, their presence also depended upon PNG_FIXED_POINT_SUPPORTED
being defined and PNG_FLOATING_POINT_SUPPORTED not being defined.
Applications no longer need to include the optional distribution header
file pngusr.h or define the corresponding macros during application
@ -5759,7 +5765,7 @@ Other rules can be inferred by inspecting the libpng source.
.SH XVII. Y2K Compliance in libpng
January 30, 2014
February 1, 2014
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
@ -6029,7 +6035,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.7.0beta30 - January 30, 2014:
Libpng version 1.7.0beta30 - February 1, 2014:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -6052,7 +6058,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.7.0beta30, January 30, 2014, are
libpng versions 1.2.6, August 15, 2004, through 1.7.0beta30, February 1, 2014, 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
@ -6151,7 +6157,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
January 30, 2014
February 1, 2014
.\" end of man page