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Changes since previous Aminet release:
- Relaxed integrity checks to increase performance. Now 15-20%
faster on 68k, 5-10% faster on OS4, 7% faster on WarpOS and
5% faster on MorphOS.
- Allow images with incorrect CMF bytes to be loaded - such
images should really be fixed with pngfix [BUGID 0002].
- Fixed faulty parsing of the background colour option.
- Fixed incorrect default background colour reading on WarpOS.
- Completely reworked more intelligent detection of features
available in differing picture.datatype versions and a more
robust detection of alpha channel support (OS 3.1.4 no longer
misidentified as alpha aware).
- Changed prefs loading routine due to dos/ReadArgs() on MorphOS not
being fully compatible with AmigaOS, which was causing the prefs
to not always be read properly.
FEATURES
- Supports both normal and interlaced PNG files
- Gamma correction options allow the output image to be changed to
suit your monitor/environment
- Alpha channel handling can be configured to output RGBA bitmaps, or
RGB bitmaps either by combining the alpha information internally
using a configurable background colour or simply stripping it
- Highly optimized datatype dispatch engine, and fast PNG decoder,
resulting in a very efficient, compact and quick PNG datatype
- Asynchronous file i/o and double buffering techniques (WarpOS only),
which speeds up image decoding
- Optimized versions for 68020, 030, 040 and 060
- PowerPC support with native OS4, WarpOS and MorphOS versions
- Alter the pen allocation precision when images are remapped to an
8-bit display
- Specific support for the AmigaOS picture.datatype v44+, when available
- The dithering feature of the AmigaOS picture.datatype v44+ can be
configured to your liking (e.g. disabled for 15/16-bit displays)
- Based on libpng 1.6.37 and zlib 1.2.11
REQUIREMENTS
WarpPNG is a PNG datatype which utilizes and requires the following:
- Kickstart 3.0 or higher
- picture.datatype v43 or higher
(i.e. either of the ones supplied with AmigaOS 3.5+, P96 or CGraphX)
68k version
- Kickstart 3.0 or higher
- 68020 processor or higher (optimized versions included)
- picture.datatype v43 or higher
(supplied with AmigaOS 3.1.4, 3.5, 3.9, CyberGraphX, P96 or AfA OS)
WarpOS version
- Kickstart 3.0 or higher
- PPC accelerator card + 68040/060
- WarpUp Release 5.0 or higher
- picture.datatype v43 or higher
(supplied with AmigaOS 3.1.4, 3.5, 3.9, CyberGraphX, P96 or AfA OS)
OS4 version
- PPC accelerator card / AmigaOne / SAM
- AmigaOS 4.0 or higher
MorphOS version
- PPC accelerator card / Pegasos / Efika
- MorphOS 1.4 or higher
Note that a graphics card is not necessary.
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Contents of util/dtype/WarpPNGdt.lhaPERMISSION UID GID PACKED SIZE RATIO METHOD CRC STAMP NAME
---------- ----------- ------- ------- ------ ---------- ------------ ----------
[unknown] 25617 41568 61.6% -lh5- 85d2 May 11 19:26 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.020
[unknown] 125 140 89.3% -lh5- ebb5 May 11 19:28 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.030.pch
[unknown] 3532 4800 73.6% -lh5- 54c1 May 11 19:28 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.040.pch
[unknown] 6132 8492 72.2% -lh5- d844 May 11 19:28 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.060.pch
[unknown] 18164 36116 50.3% -lh5- 36a1 May 11 19:28 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.mos.pch
[unknown] 35483 66368 53.5% -lh5- 313b May 11 19:26 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.os4
[unknown] 35728 66736 53.5% -lh5- 163b May 11 19:27 WarpPNGdt/Classes/Datatypes/WarpPNG.datatype.wos
[unknown] 119 132 90.2% -lh5- 85ec May 11 19:27 WarpPNGdt/Devs/Datatypes/PNG
[unknown] 1767 2519 70.1% -lh5- 1f25 Jan 3 2000 WarpPNGdt/Devs/Datatypes/PNG.info
[unknown] 5923 18312 32.3% -lh5- 399e Apr 7 13:48 WarpPNGdt/Install_WarpPNG
[unknown] 1540 2025 76.0% -lh5- 001b Jan 3 2000 WarpPNGdt/Install_WarpPNG.info
[unknown] 9285 14636 63.4% -lh5- e89d May 16 1996 WarpPNGdt/spatch
[unknown] 14249 40450 35.2% -lh5- ff77 May 11 20:31 WarpPNGdt/WarpPNG.guide
[unknown] 2308 2924 78.9% -lh5- 9746 Dec 15 1999 WarpPNGdt/WarpPNG.guide.info
[unknown] 2406 3144 76.5% -lh5- 330f Mar 7 2001 WarpPNGdt.info
---------- ----------- ------- ------- ------ ---------- ------------ ----------
Total 15 files 162378 308362 52.7% May 12 05:08
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Aminet © 1992-2021 Urban
Müller and
the Aminet team.
Aminet contact address: <aminet aminet net> |