home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Aminet 45
/
Aminet 45 (2001)(GTI - Schatztruhe)[!][Oct 2001].iso
/
Aminet
/
util
/
dtype
/
WarpJPEGdt.readme
< prev
next >
Wrap
Text File
|
2001-09-05
|
3KB
|
96 lines
Short: JFIF-JPEG datatype V44.23 (68k,WarpOS,MorphOS)
Author: oliver@futaura.co.uk (Oliver Roberts)
Uploader: oliver@futaura.co.uk (Oliver Roberts)
Version: 44.23
Type: util/dtype
Requires: OS 3.0+,picture.datatype v43+
Changes since previous release:
- Added greyscale output mode option.
- Fixed bug in memory manager, which could have caused crashes under
certain low memory conditions.
- Now supports the PDTA_GetNumPictures and PDTA_WhichPicture tags.
- Discovered a bug in the CyberGraphX picture.datatype, concerning
error numbers which would have resulted in an unknown error being
reported by application software if bitmap allocation failed - added
workaround.
FEATURES
- Supports regular JFIF files, and also many JPEG variant formats such
as Exif, Adobe, Photoshop, Mavi, Windows, JCCK/CMYK colorspace files
and other less common formats
- Supports both normal and progressive JPEG files
- Full true colour (24-bit) and high quality reduced colour (256 colours
or less) and greyscale output modes, for graphics cards and native Amiga
displays respectively
- Highly optimized datatype dispatch engine, and fast JPEG decoder,
resulting in a very efficient, compact and quick JPEG 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 WarpOS and native MorphOS versions
- Alter the pen allocation precision when images are remapped to an
8-bit display
- Specific support for the OS 3.5/3.9 picture.datatype, when available
- The dithering feature of the OS 3.5/3.9 picture.datatype can be
configured to your liking (e.g. disabled for 15/16-bit displays)
REQUIREMENTS
WarpJPEG is a JFIF/JPEG 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 3.5/3.9, P96 or CGraphX)
68k version
- 68020 processor or higher (optimized versions included)
WarpOS version
- PPC accelerator card + 68040/060
- WarpUp Release 4 (powerpc.library V15) or higher
MorphOS version
- PPC accelerator card
- MorphOS beta release 1 or higher
Note that a graphics card is not necessary.
============================= Archive contents =============================
Original Packed Ratio Date Time Name
-------- ------- ----- --------- -------- -------------
3144 2408 23.4% 07-Mar-01 16:14:10 WarpJPEGdt.info
45124 27554 38.9% 20-Aug-01 12:51:24 +WarpJPEG.datatype.020
2108 1737 17.5% 20-Aug-01 12:51:26 +WarpJPEG.datatype.030.pch
7352 5373 26.9% 20-Aug-01 12:51:30 +WarpJPEG.datatype.040.pch
5472 4306 21.3% 20-Aug-01 12:51:32 +WarpJPEG.datatype.060.pch
76584 35452 53.7% 20-Aug-01 12:48:58 +WarpJPEG.datatype.elf
67980 33429 50.8% 20-Aug-01 12:47:34 +WarpJPEG.datatype.wos
526 445 15.3% 17-Jul-01 15:17:36 +JPEG
2519 1766 29.8% 15-Dec-99 14:24:28 +JPEG.info
11651 3774 67.6% 20-Jul-01 09:02:40 +Install_WarpJPEG
2026 1542 23.8% 02-Sep-00 00:37:36 +Install_WarpJPEG.info
14636 9285 36.5% 16-May-96 12:42:42 +spatch
31186 11420 63.3% 17-Aug-01 16:03:12 +WarpJPEG.guide
2924 2308 21.0% 15-Dec-99 16:37:44 +WarpJPEG.guide.info
-------- ------- ----- --------- --------
273232 140799 48.4% 25-Aug-101 06:30:30 14 files