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1995-02-12
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Short: View IFF,JPG,GIF,BMP,PNM on OCS,ECS,AGA,Picasso,A2024
Author: jow@hcast.franken.de
Uploader: jow@rz.uni-wuerzburg.de
Type: gfx/show
JIV is a picture viewer. I can imagine that you're wondering
now why I had to write yet another one... well, here's a list
of features that should answer your question:
· JIV supports many different file formats:
- GIF (full GIF87a standard plus a subset of GIF89a).
- BMP (MS-Windows and OS/2 variants, currently only
uncompressed).
- IFF-ILBM (including HAM6, EHB and 24bit formats),
but currently not HAM8 format.
- PNM pictures (PBM, PGM and PPM in both binary and
ASCII format).
- JPEG/JFIF, if the JPEG CODEC is installed.
· JIV supports several types of display hardware:
- all native graphics chipsets (OCS, ECS and AGA).
- A2024.
- Picasso-II.
- Generic mode, should work with every graphics board that
emulates Workbench/Intuition. Tested with the Picasso-II
emulation.
· JIV supports displaying over-sized images using autoscroll.
· JIV supports multiple filenames and AmigaDOS pattern
matching.
· JIV can dither pictures that use more colors than your
display hardware supports.
· JIV offers an endless/slideshow mode that can be used for
(non-interactive) advertising, for example in a shop window.
Please note that JIV is probably not the best choice for
"small" Amiga configurations. It will need a lot of memory and
(in some cases) quite a bit of computing power as well.
The minimum configuration for JIV is:
· 68000 or better.
· AmigaOS 2.04 (V37) or better.
· 1 MByte or more of RAM.
This configuration will allow you to view small to medium-sized
pictures (640x480x8 should just be possible).
The suggested configuration for JIV is:
· 68030 or better.
· AmigaOS 3.1 (V40) or better.
· 4 MBytes of RAM or more.
· Hard disk drive.
This configuration will allow you to view most pictures you're
likely to find. A bit more RAM wouldn't hurt, though. :-) And
of course you'll need a graphics board (Picasso-II) to display
true-color pictures without dithering.
Distribution License
This version of JIV may be distributed freely for
non-commercial purposes only. You must distribute the entire
archive intact and unchanged, that is, you are not allowed
to add files to the archive or remove files from the archive
or change files in the archive.
Specifically, you're allowed to:
· Distribute JIV on floppy-disk-based collections of
PD software.
· Distribute JIV on CDROM-based collections of PD software in
archived form only, unless you obtain a specific license
from the author.
· Distribute JIV electronically, for example through email or
FTP, or through BBS systems.
BBS sysops, do not add those pesky BBS advertisments
to the archive!
Specifically, you're not allowed to:
· Distribute parts of the archive or changed/patched versions
of the files in this archive.
· Distribute JIV on CDROM in ready-to-run form, unless you
obtain a specific license from the author first.
· Distribute JIV in any form on CDROMs that contain
picture collections, unless you obtain a specific license
from the author first.¹
· Distribute JIV bundled together with a commercial product
(software, hardware or other), unless you obtain a specific
license from the author first.
I have been informed that exporting this program to the USA
may violate USA law because of a patent that has been granted
for the LZW compression algorithm used in the GIF file format.
(I have also been informed that software patents are invalid
under German law). Therefore I will not directly export JIV
to the USA, and I will not ask for any shareware fees from USA
users of JIV (until the situation has become more transparent).
Please do not confuse this distribution license, which details
the terms and conditions for distributing JIV, with the
shareware license, which details the terms and conditions
for using JIV.
¹ Permission is granted to include archived versions of JIV on
the following CDROMs even if these CDROMs contain picture
collections:
· Aminet
· Fish
· Meeting Pearls
· Saar/AMOK
Todo:
· the color selection / dithering algorithms are not too clever.
Guess I'll have to use one of the standard algorithms instead
of my do-it-yourself code. :-)
· support for additional display devices (esp. CyberGraphics)
· support for additional image file formats:
- TIFF
- PCX
- Icon
- XBM
- Targa
- others
· AREXX port
· Image manipulation and format conversion.
Known problems:
· If you're using an A4000/040 kickstart file on a computer
with a CPU <= 68020, the DISPLAY=GENERIC may crash your
machine. This is not a bug in JIV. The BestModeIDA() system
call in the A4000 kickfile seems to contain an instruction
that is only available on 68030 and above.
There are only two kinds of people who use A4000 kickstart
files on CPUs below 68030: former registered developers
and software pirates.
· The "DISPLAY=GENERIC" mode will be very slow if you're
using older versions of AmigaOS (before 3.0/V39). JIV uses
WritePixelLine8() in GENERIC mode; WritePixelLine8() is
much faster in AmigaOS 3.0 (V39) and later than in the
older versions.
============================= Archive contents =============================
Original Packed Ratio Date Time Name
-------- ------- ----- --------- -------- -------------
215 89 58.6% 06-Feb-95 00:24:34 .displayme
1524 217 85.7% 03-Feb-95 00:07:00 JIV.info
17335 3961 77.1% 07-Feb-95 18:55:54 JIV/Changes
865 416 51.9% 03-Feb-95 00:04:16 JIV/Changes.info
72580 34676 52.2% 07-Feb-95 19:10:26 JIV/JIV
122628 56234 54.1% 27-Jan-95 02:42:46 JIV/JIV.iff
1075 634 41.0% 03-Feb-95 00:04:16 JIV/JIV.iff.info
4187 872 79.1% 03-Feb-95 00:04:16 JIV/JIV.info
5319 2434 54.2% 02-Feb-95 01:55:08 JIV/JIV.readme
33170 12383 62.6% 07-Feb-95 19:08:56 JIV/JIV_d.guide
870 429 50.6% 03-Feb-95 12:16:04 JIV/JIV_d.guide.info
28200 9988 64.5% 07-Feb-95 19:07:26 JIV/JIV_e.guide
870 432 50.3% 03-Feb-95 12:16:14 JIV/JIV_e.guide.info
1524 223 85.3% 03-Feb-95 00:04:16 JIV/jpeg_cdc.info
1224 858 29.9% 19-Dec-94 16:15:26 JIV/jpeg_cdc/Classes/codec.class
69420 37643 45.7% 19-Dec-94 16:15:26 JIV/jpeg_cdc/Classes/Codecs/jpeg.codec
1908 1368 28.3% 19-Dec-94 16:15:26 JIV/jpeg_cdc/Classes/Codecs/picture.codec
3097 1143 63.0% 19-Dec-94 16:15:22 JIV/jpeg_cdc/Install
555 290 47.7% 19-Dec-94 16:15:22 JIV/jpeg_cdc/Install.info
7900 5371 32.0% 19-Dec-94 16:15:26 JIV/jpeg_cdc/Libs/tower.library
442 282 36.1% 19-Dec-94 16:15:22 JIV/jpeg_cdc/ReadMe
433 213 50.8% 19-Dec-94 16:15:22 JIV/jpeg_cdc/ReadMe.info
4033 1454 63.9% 06-Feb-95 00:21:08 JIV/registration_d.txt
865 441 49.0% 03-Feb-95 12:15:54 JIV/registration_d.txt.info
3773 1256 66.7% 06-Feb-95 00:21:46 JIV/registration_e.txt
865 441 49.0% 03-Feb-95 00:04:16 JIV/registration_e.txt.info
-------- ------- ----- --------- --------
384877 173748 54.8% 08-Feb-95 13:11:46 26 files