| From: | Kevin Twyman |
| Date: | 26 Sep 2001 at 19:44:46 |
| Subject: | [amigactive] Re: File recognition |
Hello Neil,
On 26-Sep-01, you wrote:
>>> It won't, unless the pictures are recognised as pict_jpeg by
> DefIcons. NB>> Use SnoopDOS to see which default icon is being
> loaded and then change NB>> that icon. Or do the sensible thing and
> install DOpus.
>> Which doesn't really help the guy. You need to configure DefIcons
>> to recognise the file type.
> We don't know that he hasn't set up DefIcons. It's possible that
> thew file is being mis-recognised, seeing which icon DefIcons is
> picking will tell which filetype it thinks they are.
Cock-up No.1 - I didn't have DefIcons installed (funny that, I had it
in 3.1 before I upgraded to 3.5) I've now rectified that and had a
measure of success, at least the icon I want is now shown.
>> This can be something as simple as recognising the filename
>> extension (.jpg) to reading the file for "give away" details (e.g.
>> ??????JFIF). It really comes down to how much you know, and how
>> much you can do.
> Or just use datatypes. There's no need to work out your own file
> recognition stuff when the OS already has a good system for doing
> so.
How do I go about this Neil? It really is something I ought to be
familiar with by now, but I've never had reason to mess with it
before.
> I suspect it may be the type of JPEG that's causing the problem, as
> Krevin said they were digital camera pictures. These often use the
> JFIF-EXIF format. EXIF = EXtended InFormation, my Nikon sores all
> sorts of information in here, like exposre and zoom settings for
> each picture. not all JPEG datatypes can handle this JPEG variant,
> the AK ones can.
Correct, they are Exif jpegs. I have Opus4 set up to recognise the
filetype OK, but wanted to be able to do the same thing from a window
opened on WB
>> Having said that, Dopus and Dopus Magellan is the best option.
> Yup, but you still may as well use datatype recognition here.
Tutorial time! ;-)
Regards,
Kevin - Est. 1949 http://www.theboyz.freeserve.co.uk
A man with an Amiga A4000T CyberStormPPC 604e/233
A smile CAN make my day...but it usually takes money or sex.
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