Bug 123604

Summary:	recent documents: preview image (jpg) with wrong colors
Product:	[Applications] krita	Reporter:	sts
Component:	General	Assignee:	Halla Rempt <halla>
Status:	RESOLVED DUPLICATE
Severity:	normal
Priority:	NOR
Version:	unspecified
Target Milestone:	---
Platform:	unspecified
OS:	Linux
Latest Commit:		Version Fixed In:

Description sts 2006-03-14 11:48:50 UTC

Version:           1.5-beta2 (using KDE 3.5.1 Level "a" , SUSE 10.0 UNSUPPORTED)
Compiler:          Target: x86_64-suse-linux
OS:                Linux (x86_64) release 2.6.13-15.8-default

Start krita and I see this jpg in preview with wrong colors. If I open this image.. the colors are correct.

Attachment follows..

Comment 1 sts 2006-03-14 11:52:23 UTC

ok.. I can't upload this file because it's to big

Comment 2 Halla Rempt 2006-03-14 11:52:57 UTC

Is that a cmyk jpeg? See http://bugs.kde.org/show_bug.cgi?id=105006, http://bugs.kde.org/show_bug.cgi?id=35420. I think this is not a Krita bug, but a kfile-plugins one.

Comment 3 sts 2006-03-14 12:03:56 UTC

yes.. correct.

Comment 4 Halla Rempt 2006-03-14 12:07:06 UTC

I'll mark this bug a duplicate of the kfile-plugins bug. Maybe Brad knows how to fix it there.

*** This bug has been marked as a duplicate of 105006 ***

Comment 5 rgpublic 2006-03-14 19:59:07 UTC

Mmmm, Bug 35420 you mentioned is marked wontfix because this is supposed to be a bug in libjpeg. This is not really a bug, but a problem with Photoshop JPEGs which are the most common CMYK JPEGs unforunately.

On this URL:

http://ou800doc.caldera.com/en/jpeg/libjpeg.txt

it is explained that they will never fix this, because it would break other applications. They recommend that the problem is fixed outside libjpeg.
I only know this has sth. to do with the so called Adobe "APP14" marker inside
JPEG files. If present, it has to be inverted by the application.
It certainly isnt useful if KDE says they wontfix it because it has to
be fixed in libjpeg and libjpeg says it must be fixed in KDE. 
Hope this is helpful to overcome the deadlock. Dont know who
must be informed of this, so I'm noting it down here for the record ;-)

Comment 6 Halla Rempt 2006-03-14 20:29:56 UTC

Since Krita uses libjpeg to read those files, and does so quite well, I'd argue that the problem is with kde. It should be easy enough to fix.