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[libpng16] Updated man page about png_get_palette_max().

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Glenn Randers-Pehrson 2013-02-08 09:06:08 -06:00
parent 1f8e81738a
commit a4081f2990
2 changed files with 24 additions and 16 deletions
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16
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 1.6.0rc05 - February 7, 2013
libpng version 1.6.0rc05 - February 8, 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 1.6.0rc05 - February 7, 2013
libpng versions 0.97, January 1998, through 1.6.0rc05 - February 8, 2013
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -4591,12 +4591,16 @@ any invalid pixels are decoded as opaque black by the decoder and written
as-is by the encoder.
Retrieving the maximum palette index found was added at libpng-1.5.15.
This statement must appear after png_read_png() or png_read_image().
This statement must appear after png_read_png() or png_read_image() while
reading, and after png_write_png() or png_write_image() while writing.
int max_palette = png_get_palette_max(png_ptr, info_ptr);
This will return the maximum palette index found, or "-1" if the palette
was not checked, or "0" if no palette was found.
This will return the maximum palette index found in the image, or "-1" if
the palette was not checked, or "0" if no palette was found. Note that this
does not account for any palette index used by ancillary chunks such as the
bKGD chunk; you must check those separately to determine the maximum
palette index actually used.
A. Changes that affect users of libpng
@ -5137,7 +5141,7 @@ Other rules can be inferred by inspecting the libpng source.
XVI. Y2K Compliance in libpng
February 7, 2013
February 8, 2013
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.

24
libpng.3
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@ -1,4 +1,4 @@
.TH LIBPNG 3 "February 7, 2013"
.TH LIBPNG 3 "February 8, 2013"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.0rc05
.SH SYNOPSIS
@ -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 1.6.0rc05 - February 7, 2013
libpng version 1.6.0rc05 - February 8, 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 1.6.0rc05 - February 7, 2013
libpng versions 0.97, January 1998, through 1.6.0rc05 - February 8, 2013
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@ -5096,12 +5096,16 @@ any invalid pixels are decoded as opaque black by the decoder and written
as-is by the encoder.
Retrieving the maximum palette index found was added at libpng-1.5.15.
This statement must appear after png_read_png() or png_read_image().
This statement must appear after png_read_png() or png_read_image() while
reading, and after png_write_png() or png_write_image() while writing.
int max_palette = png_get_palette_max(png_ptr, info_ptr);
This will return the maximum palette index found, or "-1" if the palette
was not checked, or "0" if no palette was found.
This will return the maximum palette index found in the image, or "-1" if
the palette was not checked, or "0" if no palette was found. Note that this
does not account for any palette index used by ancillary chunks such as the
bKGD chunk; you must check those separately to determine the maximum
palette index actually used.
A. Changes that affect users of libpng
@ -5642,7 +5646,7 @@ Other rules can be inferred by inspecting the libpng source.
.SH XVI. Y2K Compliance in libpng
February 7, 2013
February 8, 2013
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
@ -5911,7 +5915,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.6.0rc05 - February 7, 2013:
Libpng version 1.6.0rc05 - February 8, 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).
@ -5934,7 +5938,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.2.6, August 15, 2004, through 1.6.0rc05, February 7, 2013, are
libpng versions 1.2.6, August 15, 2004, through 1.6.0rc05, February 8, 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
@ -6033,7 +6037,7 @@ certification mark of the Open Source Initiative.
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
February 7, 2013
February 8, 2013
.\" end of man page