Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!math.fu-berlin.de!fauern!faui43.informatik.uni-erlangen.de!lsmichae
From: lsmichae@immd4.informatik.uni-erlangen.de (Lars Michael)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: GIF to SPC convertors
Message-ID: <1991Apr9.134525.24039@informatik.uni-erlangen.de>
Date: 9 Apr 91 13:45:25 GMT
References: <1991Apr9.105007.10362@newcastle.ac.uk>
Organization: CSD., University of Erlangen, Germany
Lines: 53

D.M.Johnson@newcastle.ac.uk (Dave Johnson) writes:

>Hi, Having been sent some gif pictures, I decided to view them on my ST.

>I looked around the PD site and found a few viewers, and also GIFSPC and
>SPLINDEX.

>When the gifs were viewed using FASTGIF the pictures came out ok (In 16
>colours) but I decided I would like to see them in full colour glory and so
>feed them through GIFSPC and viewed the result on SPLINDEX - The result was a
>completely messed up picture. Could be the convertor me tinks and so tried
>BGIF. The resulting SPU picture was better but still not perfect as it was
>still corrupt in places, (odd lines missing etc)

>Has anyone else had this problem, if so has any one cured the problem. what is
>the problem. etc etc etc?

>My Machine is a 520STFM with 1.02 OS and 2.5M of memory

>Dave Johnson

I had these problems, too.

I got several GIF->SP? converters from atari.archive but no one was ok.
GIFSPC has the effects a described above. It seems that the color
computation is buggy. I tried to convert the baywatch4 GIF pic and
noticed a wrong background color in some areain the SPC pic. It should
be light blue but was dark blue. And the same with Erikas body  8-(  ...

BGIF seems better as GIFSPC, but doesn't use all y-resolution. The
resulting SP? pics are teeny weeny itsy bitsy ones.

VGIF has a build-in converter which seems to be the best of them, but
(my version) converts only the top left edge (320 x 200) of the picture.
What a mess if you want the baywatch* GIF pics convert to SP?  8-((

I have coded a good RGB2SPU converter, but 'til now I have *no* GIF2RGB
converter. I 've started last month, but got no result 'til now. The
GIF pic format is very *tricky*  8-(((

BTW:   I'm using a MEGA ST2 with TOS 1.4 (new notation: 1.04) and 4 Megs

Any comments, ideas?
								Lars

+----------------------------------------+----------------------------------+
|     lsmichae@faui43.uni-erlangen.de    |    | | |                         |
|             Lars Michael               |    | | |   "Down with ATARI,     |
|  Graduate Student of Computer Science  |   /  |  \  Long live the ST !"   |
|    at University of Erlangen/Germany   |  /   |   \                       |
+----------------------------------------+----------------------------------|
|  "May the Schwartz be with you!"                                          |
+---------------------------------------------------------------------------+