[KPhotoAlbum] Can't read raw images

[Benny Simonsen]

Den man. 16. aug. 2021 kl. 01.10 skrev Johannes Zarl-Zierl <
johannes at zarl-zierl.at>:

> Hi,
>
> Am Sonntag, 15. August 2021, 09:39:37 CEST schrieb Benny Simonsen:
> > Hi
> > I can't view my old Canon raw .tif images anymore in KPhotoalbum.
> > I can see the newer .crw and .cr2 images works fine.
> >
> > I have upgraded my PC, and it might be long time ago it have worked, so I
> > don't know what have changed.
>
> Are the files correctly displayed in gwenview? We use libkdcraw, just like
> gwenview, so if gwenview works but kphotoalbum doesn't, this is a
> kphotoalbum
> issue...
>
I can't figure out what happened, now I can see the images, even though it
is just a thumbnail.
I am sure that the source image was not missing.

There are some size-issue showing raw images, some of the "wrong" sizes are
in Gewnview, but there happens funny things in KPhotoalbum.

|--------+------+-----------+-----------+----------------------+-----------------------+------------------------|
|    EOS | Raw  |     dcraw |  Gwenview | KPhotoalbum 5.6.1    |
KPhotoalbum 5.8.1 | Kphotoalbum master     |
|--------+------+-----------+-----------+----------------------+-----------------------+------------------------|
|     1D | .tif | 2496x1662 |   288x192 | 288x192              |
    288x192 | 288x192                |
|   300D | .crw | 3088x2056 | 2048x1360 | 3088x2056            |
  3088x2056 | 3088x2056 -> 2048x1360 |
| 1DmkII | .cr2 | 3522x2348 | 1536x1024 | 384x256 -> 1536x1024 |
  1536x1024 | 1536x1024              |
|    70D | .cr2 | 5496x3670 | 5472x3648 | 684x456 -> 1368x912  | 5472x3648
-> 1368x912 | 5472x3648 -> 1368x912  |
|--------+------+-----------+-----------+----------------------+-----------------------+------------------------|

- All optional dependencises for building 5.6.1, 5.8.1 and master=33e7fe80
are installed (according to output from cmake).
- dcraw: Convert image via "dcraw image.<raw>" and open generated ppm file
in Qwenview
- Gwenview: Reported size of raw-image
- Kphotoalbum 5.6.1: Same result no matter if installed via "apt install
kphotoalbum" on linuxmint 20.2 or build from source.
- Kphotoalbum 5.8.1 build from source
- Kphotoalbum master=33e7fe80 build from source

In Kphotoalbum rows the -> is used if the size is changed between
- 1: Initial creation of init.xml, exif-info.db and .thumbnails, Save,
Close KPA
- 2: Reopen KPA viewing the images, Save.

If viewing the images without save, close and reopen, then the size is the
initial size in 5.6.1(installed via apt).
In 5.8.1 and master=33e7fe80 the result is the final size (1368x912) no
matter close+reopen or not.

Each test starts from a directory only with the raw images and executiong
path_to/kphotoalbum --db dir_with_images/index.xml (index.xml does not
exist).

Hope that it makes sense. The issue is not very important, even though it
would be nice to see the full size images :-).

*Missing (optional) dependencies - libkdcraw not installed?*
Is there something I should install prior to re-building KPhotoalbum?

I have installed libraw19, but no libkdcraw, is that a problem, when:
dpkg -l |grep -i '\(libkdcraw\|libraw\)'
ii  libraw1394-11:amd64                           2.1.2-1
            amd64        library for direct access to IEEE 1394 bus (aka
FireWire)
ii  libraw19:amd64                                0.19.5-1ubuntu1
            amd64        raw image decoder library


> > *UFRaw*
> > I have prior used UFRaw + URwaw batch - I don't know if KPhotoalbum have
> > used it, but it have dissaperaed from the linuxmint repo due to
> > unmaintained.
>
> We use libkdcraw, which depends on libraw.
>
I have a .ufraw file placed together with the .tif file, I don't assume it
gives any problems, but just mentioning it.


>
> > *MPlayer2*: Not installed, I can't see it should be a dependency any more
>
> -> This seems to be a packaging error. KPhotoAlbum used to use mplayer/
> mplayer2 for creating video thumbnails, but does not do so anymore.
>
I am not sure I understand you:
If mplayer2 isn't used any more then it is ok that KPhotoalbum not depends
on it.


> Cheers,
>   Johannes
>

Cheers,
Benny
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