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[master] Imported from libpng-1.5.10beta03.tar

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Glenn Randers-Pehrson
2012-03-04 22:25:10 -06:00
parent 3484a760f4
commit 187694b9ec
38 changed files with 440 additions and 141 deletions
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31
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 1.5.10beta01 - February 21, 2012
libpng version 1.5.10beta03 - March 5, 2012
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2011 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 1.5.10beta01 - February 21, 2012
libpng versions 0.97, January 1998, through 1.5.10beta03 - March 5, 2012
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2011 Glenn Randers-Pehrson
@@ -4142,6 +4142,15 @@ X. Changes to Libpng from version 1.4.x to 1.5.x
From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
function) incorrectly returned a value of type png_uint_32.
Checking for invalid palette index on read or write was added at libpng
1.5.10. This is enabled by default but can be disabled in each png_ptr with
png_set_check_for_invalid_index(png_ptr, allowed);
allowed - one of
0: disable
1: enable
A. Changes that affect users of libpng
There are no substantial API changes between the non-deprecated parts of
@@ -4260,6 +4269,20 @@ PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
that it could be used to override them. Now this function will reduce or
increase the limits.
Starting in libpng-1.5.10, the user limits can be set en masse with the
configuration option PNG_SAFE_LIMITS_SUPPORTED. If this option is enabled,
a set of "safe" limits is applied in pngpriv.h. These can be overridden by
application calls to png_set_user_limits(), png_set_user_chunk_cache_max(),
and/or png_set_user_malloc_max() that increase or decrease the limits. Also,
in libpng-1.5.10 the default width and height limits were increased
from 1,000,000 to 0x7ffffff (i.e., made unlimited). Therefore, the
limits are now
default safe
png_user_width_max 0x7fffffff 1,000,000
png_user_height_max 0x7fffffff 1,000,000
png_user_chunk_cache_max 0 (unlimited) 128
png_user_chunk_malloc_max 0 (unlimited) 8,000,000
B. Changes to the build and configuration of libpng
Details of internal changes to the library code can be found in the CHANGES
@@ -4573,13 +4596,13 @@ Other rules can be inferred by inspecting the libpng source.
XIV. Y2K Compliance in libpng
February 21, 2012
March 5, 2012
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 1.5.10beta01 are Y2K compliant. It is my belief that earlier
upward through 1.5.10beta03 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has three year fields. One is a 2-byte unsigned integer that