Re: jpg reader

[eaiu636@rigel.oac.uci.edu (Leif Strand)]

In article <3irbhd$3sj@pcnet1.pcnet.com>,
David Hickey-Schiappa <altair4@pcnet.com> wrote:
>     I have found and am successfully using iigif, but since so many pics 
>seem to be posted in jpg format, I'm wondering if someone has written a 
>program, which will run on an apple IIe, to either read or convert jpg's to 
>gif's or some other format which can then be processed for reading by the 
>apple?  Failing that, how about a conversion program which I can run from 
>the Unix C-shell?  Thanks.

There is a program on one of my Unix shell accounts here at the university
called "djpeg".  You can use it to convert from jpeg to gif using the "G"
option:

  djpeg -G foo.jpeg >foo.gif

Even though I have a GS, I use this all the time, because the jpeg reader
for the GS can't save the conversion, and the GS jpeg-to-gif converters are
slow and buggy.  So even if there is a jpeg converter/reader for the //e,
you probably wouldn't want to use it (it would probably be worse than the
GS ones, which is pretty damn bad).

The only problem is that djpeg is apparently not standard on all Unix
systems.  In the "man" page, there are the following lines:

>AVAILABILITY
>     Available on the Suns and Sequents.

Which I guess is why it's on my computer science account (a Sun account)
and not on my general university account (neither a Sun nor a Sequent
account).  I assume if it isn't available on the Unix account you use, you
could get the source somewhere and compile it; I don't know where the
source is available, but here are some informative lines from the very end
of the "man" page:

>BUGS
>     Please report any  problems  with  this  software  to  jpeg-
>     info@uunet.uu.net.
>
>AUTHOR
>     This software is the work of  Tom  Lane,  Philip  Gladstone,
>     Luis Ortiz, and other members of the independent JPEG group.
>
>Public Software   Last change: 9 December 1991                  1


--Leif Strand