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Amiga computer related discussion => Amiga Software Issues and Discussion => Topic started by: scafe on October 02, 2003, 12:18:47 PM

Title: JPEG backdrops on wb3.0
Post by: scafe on October 02, 2003, 12:18:47 PM

Having followed previous advice i downloaded and installed the JPEG-DT file from aminet to allow me to use JPEGs in WB3.0. However it still dont work, i can now select the files in the WBBACKGROUND prefs tool, but when i go to save or use the settings it comes up with an error "can't open xxx.jpg"

Title: Re: JPEG backdrops on wb3.0
Post by: Linchpin on October 02, 2003, 12:40:54 PM

Aint it easier to convert it to an amiga format file on PSP or something?

If you have a PC.... :-)

Title: Re: JPEG backdrops on wb3.0
Post by: xeron on October 02, 2003, 12:43:44 PM

I think datatype background support was introduced in OS3.5.

Title: Re: JPEG backdrops on wb3.0
Post by: scafe on October 02, 2003, 12:46:15 PM

I use linux and only have the Gimp which i am told has pretty poor support for IFF file types with avalible plug-ins

Title: Re: JPEG backdrops on wb3.0
Post by: lempkee on October 02, 2003, 12:46:21 PM

i have heard this from others lately aswell , so i guess its impossible atm.

go for 3.9 dood....u wont regret it.!

Title: Re: JPEG backdrops on wb3.0
Post by: Varthall on October 02, 2003, 12:54:17 PM

In the past I used jpg backdrops without problems on my a1200 with wb 3.0. If it says that it couldn't open the file, maybe it's in a jpeg format (progressive?) that the datatype doesn't recognise. I would suggest to try with other jpgs, or some other jpg datatype.

Varthall

Title: Re: JPEG backdrops on wb3.0
Post by: lorddef on October 02, 2003, 01:32:42 PM

Yeh I used jpeg backdrops with 3.0 before too.  Check that the installer is putting the datatytpe files in the right places.

Title: Re: JPEG backdrops on wb3.0
Post by: graffias79 on October 02, 2003, 02:49:44 PM

I used jpg backgrounds with wb 3.1.  I do remember the datatype that I had wouldn't load a certain flavor of jpeg.  I thought I saw somewhere they were called photoshop jpegs.  Not sure though it's been a while since I used my 1200 for the internet...

Title: Re: JPEG backdrops on wb3.0
Post by: that_punk_guy on October 02, 2003, 03:09:44 PM

Quote

lorddef wrote:
Yeh I used jpeg backdrops with 3.0 before too.  Check that the installer is putting the datatytpe files in the right places.

Me too. But JPEG decoding and colour reduction took so long on each boot that in the end I converted the backdrop to ILBM so I'd have the backdrop straight away.

Title: Re: JPEG backdrops on wb3.0
Post by: Thomas on October 02, 2003, 05:34:01 PM

Quote

I use linux and only have the Gimp which i am told has pretty poor support for IFF file types with avalible plug-ins

Do it on the Amiga. There are lots of tools for reading JPEGs and saving IFFs. E.g. PPaint or GfxCon. Search Aminet.

Bye,
Thomas

Title: Re: JPEG backdrops on wb3.0
Post by: olegil on October 02, 2003, 07:17:15 PM

I would guess it's in one of the later additions to the jpeg standard which your datatype doesn't support. Load it in gimp and save it back without any fancy settings enabled :-)

Title: Re: JPEG backdrops on wb3.0
Post by: cecilia on October 03, 2003, 02:27:06 AM

Quote

scafe wrote:
I use linux and only have the Gimp which i am told has pretty poor support for IFF file types with avalible plug-ins

not true.
go to http://registry.gimp.org/plugin?id=914 (http://registry.gimp.org/plugin?id=914) and download "gimp-ilbm-0.9.4-1.i386.rpm".

I did for my red hat system. it's an IFF loader/saver and i've loaded iff's with no problem. just tried it today to  make sure.

Title: Re: JPEG backdrops on wb3.0
Post by: Amiga1200PPC on October 03, 2003, 03:24:33 AM

Try loading it with Multiview, then you will see if your jpeg datatype can handle it.

Title: Re: JPEG backdrops on wb3.0
Post by: Druideck on October 03, 2003, 06:34:48 AM

Sometimes JFIF's are named JPG and some
datatypes don't load JFIF. Save them out
again or try different datatype, test with
multiview as suggested.

Title: Re: JPEG backdrops on wb3.0
Post by: scafe on October 03, 2003, 12:57:23 PM

Thanx i try some of your sugg.