Bug 273366

Summary:	KDE applications cannot open PGF files (progressive graphics format)
Product:	[Unmaintained] kdelibs	Reporter:	S. Burmeister <sven.burmeister>
Component:	kimgio	Assignee:	kdelibs bugs <kdelibs-bugs-null>
Status:	RESOLVED UNMAINTAINED
Severity:	wishlist	CC:	caulier.gilles, jtamate, robert
Priority:	NOR
Version First Reported In:	4.6
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description S. Burmeister 2011-05-15 21:21:19 UTC

Version:           2.6 (using KDE 4.6.2) 
OS:                Linux

While digikam can open and handle PGF files fine gwenview does not. I'm not sure what libraries KDE-apps share but maybe gwenview can use digikam's code.

Reproducible: Always

Comment 1 Aurelien Gateau 2011-05-31 09:59:02 UTC

Gwenview uses Qt and kdelibs image plugins to decode image formats. Such a format should be added to kdelibs image plugins.

Comment 2 caulier.gilles 2011-06-27 11:59:29 UTC

*** Bug 276428 has been marked as a duplicate of this bug. ***

Comment 3 caulier.gilles 2011-06-27 12:01:05 UTC

*** Bug 273351 has been marked as a duplicate of this bug. ***

Comment 4 caulier.gilles 2011-06-27 12:06:34 UTC

For information

PGF image loader in digiKam core is here :

https://projects.kde.org/projects/extragear/graphics/digikam/repository/revisions/fd157019ae3dab52cb4570c221471a1444f6aad9/entry/libs/dimg/loaders/pgfloader.cpp

PGF lib is here, last version patched a lots (OpenMP support bugs)

https://projects.kde.org/projects/extragear/graphics/digikam/repository/revisions/master/show/libs/3rdparty/libpgf

As digiKam support 16 bits colors depth, we cannot use Qt image loader mechanism here.

Note : Exiv2 shared lib, used to manipulate metadata support PGF image format

Gilles Caulier

Comment 5 caulier.gilles 2011-06-30 10:18:32 UTC

Mostly all code to read PGF image data to QImage and vis-versa are already written on digiKam core with these methods :

to decode PGF image data from a QByteArray and store it to a QImage :

https://projects.kde.org/projects/extragear/graphics/digikam/repository/revisions/master/entry/libs/threadimageio/pgfutils.cpp#L53

to encode PGF image data from a QImage and store it to a QByteArray :

https://projects.kde.org/projects/extragear/graphics/digikam/repository/revisions/master/entry/libs/threadimageio/pgfutils.cpp#L108

Gilles Caulier

Comment 6 Christoph Feck 2011-07-18 19:21:32 UTC

*** Bug 277843 has been marked as a duplicate of this bug. ***

Comment 7 Robert Riemann 2014-09-08 19:17:05 UTC

would be nice to have pgf support. :)

Comment 8 caulier.gilles 2014-09-08 21:28:51 UTC

*** Bug 338887 has been marked as a duplicate of this bug. ***

Comment 9 caulier.gilles 2019-07-27 20:01:08 UTC

Please test with 6.2.0 pre-release bundles available here :

https://files.kde.org/digikam/

Thanks in advance

Gilles Caulier

Comment 10 Christoph Cullmann 2024-09-14 16:18:30 UTC

Hi,

kdelibs (version 4 and earlier) is no longer maintained since a few years.

KDE Frameworks 5 or 6 might already have implemented this wish.

If not, please re-open against the matching framework if feasible or against the application that shows the issue.

We then can still dispatch it to the right Bugzilla product or component.

Greetings
Christoph Cullmann