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[libpng15] Imported from libpng-1.5.18beta04.tar

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Glenn Randers-Pehrson
2014-01-10 10:37:56 -06:00
parent 62c3f9f0fe
commit 101a87cb0f
12 changed files with 35 additions and 37 deletions
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17
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 1.5.18beta04 - January 1, 2014
libpng version 1.5.18beta04 - January 10, 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 1.5.18beta04 - January 1, 2014
libpng versions 0.97, January 1998, through 1.5.18beta04 - January 10, 2014
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2013 Glenn Randers-Pehrson
@@ -4183,6 +4183,7 @@ 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.
The incorrect macro was removed from libpng-1.4.5.
Checking for invalid palette index on write was added at libpng
1.5.10. If a pixel contains an invalid (out-of-range) index libpng issues
@@ -4307,11 +4308,6 @@ reset by pngusr.h or by explicit settings on the compiler command line.
These settings may produce compiler warnings or errors in 1.5.0 because
of macro redefinition.
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. libpng 1.5.0
is consistent with the implementation in 1.4.5 and 1.2.x (where the macro
did not exist.)
Applications can now choose whether to use these macros or to call the
corresponding function by defining PNG_USE_READ_MACROS or
PNG_NO_USE_READ_MACROS before including png.h. Notice that this is
@@ -4329,7 +4325,10 @@ option was off by default, and slightly inaccurate scaling occurred.
This option can no longer be turned off, and the choice of accurate
or inaccurate 16-to-8 scaling is by using the new png_set_scale_16_to_8()
API for accurate scaling or the old png_set_strip_16_to_8() API for simple
chopping.
chopping. In libpng-1.5.4, the PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
macro became PNG_READ_SCALE_16_TO_8_SUPPORTED, and the PNG_READ_16_TO_8
macro became PNG_READ_STRIP_16_TO_8_SUPPORTED, to enable the two
png_set_*_16_to_8() functions separately.
Prior to libpng-1.5.4, the png_set_user_limits() function could only be
used to reduce the width and height limits from the value of
@@ -4668,7 +4667,7 @@ Other rules can be inferred by inspecting the libpng source.
XIV. Y2K Compliance in libpng
January 1, 2014
January 10, 2014
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.