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[devel] Added a remark about png_get_uint_16 in the libpng-manual.txt

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and libpng.3
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Glenn Randers-Pehrson
2010-11-25 07:16:29 -06:00
parent b93e0326d2
commit 5b40b01319
2 changed files with 40 additions and 18 deletions
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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 1.5.0beta56 - November 21, 2010
libpng version 1.5.0beta56 - November 25, 2010
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2010 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 1.5.0beta56 - November 21, 2010
libpng versions 0.97, January 1998, through 1.5.0beta56 - November 25, 2010
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2010 Glenn Randers-Pehrson
@@ -3191,6 +3191,12 @@ deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
png_set_expand_gray_1_2_4_to_8() because the former function also
expanded palette images.
Macros for png_get_uint_16, png_get_uint_32, and png_get_int_32
were added and are used by default instead of the corresponding
functions. Unfortunately,
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.
We changed the prototype for png_malloc() from
png_malloc(png_structp png_ptr, png_uint_32 size)
to
@@ -3228,7 +3234,12 @@ PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
We removed the trailing '.' from the warning and error messages.
X. Detecting libpng
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.
XI. Detecting libpng
The png_get_io_ptr() function has been present since libpng-0.88, has never
changed, and is unaffected by conditional compilation macros. It is the
@@ -3237,7 +3248,7 @@ libpng version since 0.88. In an autoconf "configure.in" you could use
AC_CHECK_LIB(png, png_get_io_ptr, ...
XI. Source code repository
XII. Source code repository
Since about February 2009, version 1.2.34, libpng has been under "git" source
control. The git repository was built from old libpng-x.y.z.tar.gz files
@@ -3256,7 +3267,7 @@ the libpng bug tracker at
http://libpng.sourceforge.net
XII. Coding style
XIII. Coding style
Our coding style is similar to the "Allman" style, with curly
braces on separate lines:
@@ -3364,9 +3375,9 @@ Lines do not exceed 80 characters.
Other rules can be inferred by inspecting the libpng source.
XIII. Y2K Compliance in libpng
XIV. Y2K Compliance in libpng
November 21, 2010
November 25, 2010
Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.