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util/libs/pngalpha_lib.lha

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Short:Load alpha channel from PNG pictures etc.
Author:Andreas Falkenhahn <andreas at airsoftsoftwair.de>
Uploader:Andreas Falkenhahn <andreas airsoftsoftwair de>
Type:util/libs
Version:2.0
Replaces:util/libs/pngalpha_lib.lha
Requires:68020
Architecture:m68k-amigaos >= 3.0
Date:2007-03-24
Download:http://aminet.net/util/libs/pngalpha_lib.lha - View contents
Readme:http://aminet.net/util/libs/pngalpha_lib.readme
Downloads:1601
pngalpha.library
================

This library can be used on to extract alpha channel information out of PNG
pictures and you can use it to save RGB arrays as PNG pictures (optionally with
alpha channel).
MorphOS, AROS and AmigaOS4 all support alpha channel extraction through the
picture.datatype. On classic Amigas, however, the picture.datatype still does
not support alpha channel handling which is the reason why I have created this
library.

pngalpha.library uses libpng 1.2.8 and zlib 1.2.3.


Copyright
=========

libpng version 1.2.8 - December 3, 2004
Copyright (c) 1998-2004 Glenn Randers-Pehrson
(Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
(Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)

zlib version 1.2.3 (C) 1995-2004 Jean-loup Gailly and Mark Adler

pngalpha.library was compiled by Andreas Falkenhahn. Please contact me with
any questions you may have at andreas at airsoftsoftwair.de. The source code
is available on request but it is really just a front-end for libpng. Nothing
interesting.


History
=======

2.0 (12-05-06)
- added glue code for OS4
- added support for saving RGB data as PNG picture

1.0 (19-11-05)
- initial release


Contents of util/libs/pngalpha_lib.lha
 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                  184     316  58.2% -lh5- e3a8 May 19  2006 pngalpha_library20/Developer/clib/pngalpha_protos.h
[generic]                  120     163  73.6% -lh5- ce0f May 12  2006 pngalpha_library20/Developer/fd/pngalpha_lib.fd
[generic]                   76     107  71.0% -lh5- a79a May 19  2006 pngalpha_library20/Developer/pragmas/pngalpha_pragmas.h
[generic]                  122     170  71.8% -lh5- 3160 Nov 18  2005 pngalpha_library20/Developer/proto/pngalpha.h
[generic]                  254     404  62.9% -lh5- 9f02 May 12  2006 pngalpha_library20/Developer/fd/pngalpha_lib.sfd
[generic]                 1172    2559  45.8% -lh5- 7d2b May 12  2006 pngalpha_library20/Libs/pngalpha.l.main
[generic]                80048  141900  56.4% -lh5- b685 May 19  2006 pngalpha_library20/Libs/pngalpha.library
[generic]                 1787    4010  44.6% -lh5- 6f57 Mar 23 17:19 pngalpha_library20/README
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         8 files   83763  149629  56.0%            Mar 24 11:40

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