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31
libpng.3
31
libpng.3
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.TH LIBPNG 3 "September 25, 2009"
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.TH LIBPNG 3 "September 30, 2009"
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.SH NAME
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libpng \- Portable Network Graphics (PNG) Reference Library 1.2.41beta01
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libpng \- Portable Network Graphics (PNG) Reference Library 1.2.41beta02
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.SH SYNOPSIS
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\fI\fB
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@@ -821,7 +821,7 @@ Following is a copy of the libpng.txt file that accompanies libpng.
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.SH LIBPNG.TXT
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libpng.txt - A description on how to use and modify libpng
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libpng version 1.2.41beta01 - September 25, 2009
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libpng version 1.2.41beta02 - September 30, 2009
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Updated and distributed by Glenn Randers-Pehrson
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<glennrp at users.sourceforge.net>
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Copyright (c) 1998-2009 Glenn Randers-Pehrson
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@@ -832,7 +832,7 @@ libpng.txt - A description on how to use and modify libpng
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Based on:
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libpng versions 0.97, January 1998, through 1.2.41beta01 - September 25, 2009
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libpng versions 0.97, January 1998, through 1.2.41beta02 - September 30, 2009
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Updated and distributed by Glenn Randers-Pehrson
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Copyright (c) 1998-2009 Glenn Randers-Pehrson
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@@ -1451,8 +1451,8 @@ into the info_ptr is returned for any complex types.
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png_get_tRNS(png_ptr, info_ptr, &trans, &num_trans,
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&trans_values);
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trans - array of transparent entries for
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palette (PNG_INFO_tRNS)
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trans - array of transparent
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entries for palette (PNG_INFO_tRNS)
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trans_values - graylevel or color sample values of
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the single transparent color for
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non-paletted images (PNG_INFO_tRNS)
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@@ -2681,8 +2681,8 @@ width, height, bit_depth, and color_type must be the same in each call.
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png_set_tRNS(png_ptr, info_ptr, trans, num_trans,
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trans_values);
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trans - array of transparent entries for
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palette (PNG_INFO_tRNS)
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trans - array of transparent
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entries for palette (PNG_INFO_tRNS)
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trans_values - graylevel or color sample values
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(in order red, green, blue) of the
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single transparent color for
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@@ -3751,7 +3751,6 @@ We replaced all of these functions with simple stubs in libpng-1.2.20,
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when the Intel assembler code was removed due to a licensing issue.
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.SH IX. (Omitted)
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.SH X. Detecting libpng
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The png_get_io_ptr() function has been present since libpng-0.88, has never
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@@ -3868,23 +3867,25 @@ cast, nor do we put one between a function name and the
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left parenthesis that follows it:
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for (i = 2; i > 0; --i)
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x[i] = a(x) + (int)b;
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y[i] = a(x) + (int)b;
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We prefer #ifdef and #ifndef to #if defined() and if !defined()
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when there is only one macro being tested.
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We do not use the TAB character for indentation in the C sources.
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Other rules can be inferred by inspecting the libpng
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source.
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.SH XIII. Y2K Compliance in libpng
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September 25, 2009
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September 30, 2009
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Since the PNG Development group is an ad-hoc body, we can't make
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an official declaration.
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This is your unofficial assurance that libpng from version 0.71 and
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upward through 1.2.41beta01 are Y2K compliant. It is my belief that earlier
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upward through 1.2.41beta02 are Y2K compliant. It is my belief that earlier
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versions were also Y2K compliant.
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Libpng only has three year fields. One is a 2-byte unsigned integer that
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@@ -4224,7 +4225,7 @@ possible without all of you.
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Thanks to Frank J. T. Wojcik for helping with the documentation.
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Libpng version 1.2.41beta01 - September 25, 2009:
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Libpng version 1.2.41beta02 - September 30, 2009:
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Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
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Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
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@@ -4247,7 +4248,7 @@ this sentence.
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This code is released under the libpng license.
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libpng versions 1.2.6, August 15, 2004, through 1.2.41beta01, September 25, 2009, are
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libpng versions 1.2.6, August 15, 2004, through 1.2.41beta02, September 30, 2009, are
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Copyright (c) 2004,2006-2008 Glenn Randers-Pehrson, and are
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distributed according to the same disclaimer and license as libpng-1.2.5
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with the following individual added to the list of Contributing Authors
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@@ -4346,7 +4347,7 @@ certification mark of the Open Source Initiative.
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Glenn Randers-Pehrson
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glennrp at users.sourceforge.net
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September 25, 2009
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September 30, 2009
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.\" end of man page
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