[digikam] [Bug 338783] New: No EXIF/XMP info in "Metadata" sideview

[Peter Albrecht-2]

https://bugs.kde.org/show_bug.cgi?id=338783

            Bug ID: 338783
           Summary: No EXIF/XMP info in "Metadata" sideview
           Product: digikam
           Version: 4.2.0
          Platform: Gentoo Packages
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: Metadata
          Assignee: [hidden email]
          Reporter: [hidden email]

If I select a photo (e.g. "myPhoto.jpg") in Album-View, the
"Metadata" side view on the right side does not show any
EXIF or XMP information of this image. The list of metadata
is totally blank.

On the console
   # exiv2 -p a myPhoto.jpg
lists lots of "Exif...." and "Xmp..." lines.

The strang thing is: The "Metadata" side view does show
"Makernote" and "IPTC" metadata for "myPhoto.jpg"


I tried all filter modes in the "Metadata" side view:
  - "No filter"
  - "Photograph"
  - "Custom"
=> the list of metadata keeps blank.

The "Search..." filter-input-control is empty.

I went to "Settings -> Configure digikam... -> Metadata ->
Display" and for EXIF viewer, I...
  - selected all ("Select All" Button)
  - selected none ("Clear" Button)
  - tried the default ("Default" Button)
=> the list of EXIF metadata keeps empty all the time.


On the other hand, digiKam could read the metadata some way:
The tooltip in album view does show sane values for
"Aperture", "Focal", "Exposure" and "Sensitivity".


I use digiKam 4.2.0 with KDE 4.12.5 on gentoo linux.

-------------------------------------------------- 8<
--------------------------------------------------
digiKam version 4.2.0
CPU cores: 2
Demosaic GPL2 pack support: Unknown
Demosaic GPL3 pack support: Unknown
Exiv2 can write to Jp2: Yes
Exiv2 can write to Jpeg: Yes
Exiv2 can write to Pgf: Yes
Exiv2 can write to Png: Yes
Exiv2 can write to Tiff: Yes
Exiv2 supports XMP metadata: Yes
LibCImg: 130
LibEigen: 3.0.6
LibExiv2: 0.23
LibJPEG: 62
LibJasper: 1.900.1
LibKDE: 4.12.5
LibKExiv2: 2.3.1
LibKGeoMap: 2.0.0
LibKdcraw: 2.4.2
LibLCMS: 2060
LibLensFun: 0.2.8-0
LibPGF: 6.12.27 - external shared library
LibPNG: 1.6.12
LibQt: 4.8.5
LibRaw: 0.15.4
LibTIFF: LIBTIFF, Version 4.0.3 Copyright (c) 1988-1996 Sam
Leffler Copyright (c) 1991-1996 Silicon Graphics, Inc.
Marble Widget: 0.17.0 (stable version)
Parallelized PGF codec: No
Parallelized demosaicing: Unknown
RawSpeed codec support: Unknown
Database backend: QSQLITE
Kipi-Plugins: 3.5.0
LibKface: 3.0.0
LibKipi: 2.1.0
LibOpenCV: 2.4.5
-------------------------------------------------- >8
--------------------------------------------------

Reproducible: Always

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |[hidden email]

--- Comment #1 from Gilles Caulier <[hidden email]> ---
In Setup/Metadata panel, do you turn on "Read from sidecar files" option ?

Gilles Caulier

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

Gilles Caulier <[hidden email]> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|No EXIF/XMP info in         |No EXIF/XMP info in
                   |"Metadata" sideview         |"Metadata" right side-bar
                   |                            |tabs

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

[hidden email] changed:

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----------------------------------------------------------------------------
                 CC|                            |jean-pierre.verrue@laposte.
                   |                            |net

--- Comment #2 from [hidden email] ---
I have exactly the same behavior.
I use digiKam 4.2.0 with KDE 4.11.5 on opensuse 13.1

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #3 from Gilles Caulier <[hidden email]> ---
Jean Pierre,

Do you seen my question from Comment #1 ?

Gilles Caulier

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #4 from [hidden email] ---
(In reply to Gilles Caulier from comment #1)
> In Setup/Metadata panel, do you turn on "Read from sidecar files" option ?
>
> Gilles Caulier

Yes, in Setup/Metadata panel I have
read from sidecar files (In reply to Gilles Caulier from comment #3)
> Jean Pierre,
>
> Do you seen my question from Comment #1 ?
>
> Gilles Caulier

Yes, I was drafting my reply ;-)
Yes, I have "Read from sidecar files" turned on.

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #5 from Gilles Caulier <[hidden email]> ---
Jean Pierre,

Well, please turn off this option and look if problem is reproducible in this
case.

If not, please provide the files relevant (image + side-car)

Gilles Caulier

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #6 from [hidden email] ---
I turned off the "Read from sidecar files" option. the behavior is the same.

If we go into details, it's a little more complicated than what was written
peter. As he says exiv2 displays meta data correctly. Digikam also shows them
in the PROPERTIES tab and in the Metadata tab -> maker notes, but nothing in
the metadata tab -> EXIFS, metadata -> IPTC and metadata -> XMP.

On the other hand, all my photos are affected; none displayed metadata. What
have been taken yesterday, there one month, one year or 10 years. Whether they
are JPEG, NEF or DNG.

One NEF file and the associated XMP are here: http://ovh.to/ZLagmZ

Sorry, I'm very bad English writer and Google translate sometimes produces
strange results

JP

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #7 from Gilles Caulier <[hidden email]> ---
Jean Pierre,

Can you go to Help/Components Info dialog and copy/paste content in this report
?

Gilles Caulier

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #8 from Gilles Caulier <[hidden email]> ---
Jean Pierre,

I cannot reproduce the problem here using last digiKam implementation from
git/master and Exiv2 library 0.24 with your NEF + sidecar file.

I take 2 screenshots :

https://www.flickr.com/photos/digikam/14951914319/sizes/o/

With this first one, i can see Exif and Makernotes tabs filled. IPTC and XMP
are empty. In this case, XMP sidecar is not used to populate metadata views.

https://www.flickr.com/photos/digikam/15138234432/sizes/o/

With this first one, i can see Exif and Makernotes, IPTC, and XMP tabs filled.
In this case, XMP sidecar is used to populate metadata views.

Which Exiv2 and libkexiv2 shared libs version you use exactly on your computer
to run digiKam ?

Gilles Caulier

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[Peter Albrecht-2]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #9 from Peter Albrecht <[hidden email]> ---
(In reply to Gilles Caulier from comment #1)
> In Setup/Metadata panel, do you turn on "Read from sidecar files" option ?

My "Setttings -> Metadata -> Behavior":

 Write This Information to the Metadata
  [x] Image tags
  [x] Captions and title
  [x] Rating
  [ ] Pick label
  [ ] Color label
  [x] Timestamps
  [x] Metadata templates
  [ ] Face Tags

 Reading and Writing Metadata
  [ ] Read from sidecar files
  [ ] Write to sidecar files
  [ ] If possible write Metadata to RAW files
  [ ] Update file timestamp when files are modified

=> I don't use sidecar files.


(In reply to jean-pierre.verrue from comment #6)
> ... Digikam also shows them in the PROPERTIES tab ....
>
> On the other hand, all my photos are affected; none displayed metadata. What
> have been taken yesterday, there one month, one year or 10 years.

That's also true for me:
EXIF information like Aperture, Focal, Exposure or Sensitivity is correctly
shown in the "Properties" tab of the right side view, but not in the "Metadata"
tab
of the right side view. So I guess, reading the data from the image file is not
the
problem.
And the bug effects all of my images, even those, taken 10 years ago.


The EXIF and XMP tags are not shown for
 - images, newly imported from the SD-card and
 - images, edited and tagged with digiKam
 - old images, edited with digiKam 3.5.0


I use JPGs, coming from a Canon EOS 500D, imported from a SD-Card
via USB card reader.


From the menu:
 Image -> Write Metadata to Image
and
 Image -> Reread Metadata from Image
does no change this bugs effect.


Maybe one interesting point:
After installing digiKam 4.2.0, I deleted all my digiKam settings:
  ~/.kde4/share/apps/digikam
  ~/.kde4/share/config/digikamrc
  ~/.kde4/share/config/digikam_tagsmanagerrc
and the digiKam dbs:
  - digikam4.db
  - thumbnails-digikam.db
To do a fresh, clean, new restart.
Since I have all important Metadata written to the JPG files,
a fresh new digikam4.db (version 4.2.0) was build from those.

@Jean Pierre:
Did you recently delete your digiKam settings, too?

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #10 from [hidden email] ---
(In reply to Gilles Caulier from comment #7)
> Jean Pierre,
>
> Can you go to Help/Components Info dialog and copy/paste content in this
> report ?
>
> Gilles Caulier

Here is the list of components

digiKam version 4.2.0
CPU cores: 4
Codec PGF parallélisé: Non
Composant graphique Marble: 0.16.5 (stable version)
Dématriçage parallélisé: Non
Exiv2 peut écrire dans un fichier JP2: Oui
Exiv2 peut écrire dans un fichier JPEG: Oui
Exiv2 peut écrire dans un fichier PGF: Oui
Exiv2 peut écrire dans un fichier PNG: Oui
Exiv2 peut écrire dans un fichier TIFF: Oui
Exiv2 prend en charge les métadonnées XMP: Oui
LibCImg: 130
LibEigen: 3.2.0
LibExiv2: 0.23
LibJPEG: 80
LibJasper: 1.900.1
LibKDE: 4.11.5
LibKExiv2: 2.3.1
LibKGeoMap: 2.0.0
LibKdcraw: 2.3.1
LibLCMS: 119
LibLensFun: 0.2.8-0
LibPGF: 6.12.24 - bibliothèque partagée externe
LibPNG: 1.6.6
LibQt: 4.8.5
LibRaw: 0.15.3
LibTIFF: LIBTIFF, Version 4.0.3 Copyright (c) 1988-1996 Sam Leffler Copyright
(c) 1991-1996 Silicon Graphics, Inc.
Prise en charge du codec RawSpeed: Non
LibGphoto2: 2.5.2.1
LibKface: 3.0.0
LibKipi: 2.1.0
LibOpenCV: 2.4.6.1
Modules externes KIPI: 4.2.0
Moteur de base de données: QSQLITE

JP

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #11 from Gilles Caulier <[hidden email]> ---
Thi si s the most important part for this bug :

LibExiv2: 0.23 ==> this is not the last one, and it's very old now. Bug come
from this lib. Me i use 0.24 (the last one)
LibKExiv2: 2.3.1 : sound like the last implementation.

This bug is not related to database. Metadata views are populated with tags
list and gived from Exiv2 shared lib.

Important : I changed the ways to apply metadata filter over this view, since
4.0.0. The settings of this filter are in Setup/Metadata panel. I recommend to
reset these filter to use default value and try again.

Metadata filter settings is stored in digikamrc file.

Gilles Caulier

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #12 from [hidden email] ---
after posting the components list, I realized that libexiv2 is 2.3 release,
which is probably the bug origin.
Then I looked at the list of installed packages. On my opensuse 13.1. I have:

Name: libexiv2-12
Version: 0.23-9.1.3
Arch: x86_64

AND

Name: libexiv2-13
Version: 0.24-5.1
Arch: x86_64

Digikam therefore uses the wrong library.

I have tried uninstalling libexiv2-12, but alas, this release is required by
nepomuk-core. I did not want to break my system, so how force Digikam to use
good lib?

@peter
No, I did not delete my digikam settings for many years. Did I even deleted one
day? I do not remember... (I use Digikam for 10 years)

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #13 from [hidden email] ---
(In reply to Gilles Caulier from comment #11)

> Thi si s the most important part for this bug :
>
> LibExiv2: 0.23 ==> this is not the last one, and it's very old now. Bug come
> from this lib. Me i use 0.24 (the last one)
> LibKExiv2: 2.3.1 : sound like the last implementation.
>
> This bug is not related to database. Metadata views are populated with tags
> list and gived from Exiv2 shared lib.
>
> Important : I changed the ways to apply metadata filter over this view,
> since 4.0.0. The settings of this filter are in Setup/Metadata panel. I
> recommend to reset these filter to use default value and try again.
>
> Metadata filter settings is stored in digikamrc file.
>
> Gilles Caulier

J'ai vu l'onglet setup --> métadonnées --> affichage. J'ai essayé les deux
boutons : "sélectionner tout" et "défaut". Mais cela ne change rien

JP

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #14 from [hidden email] ---
Oops, bad copy / paste ;-)
I saw the setup tab -> Metadata -> display. I tried the two buttons: "select
all" and "default". But that does not change

JP

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #15 from Gilles Caulier <[hidden email]> ---
Here my system has Exiv2 0.23 (Mageia).

I use Exiv2 0.24 to :

- 1 recompile Exiv2 myself and install it (you can install more than one
version of Exiv2 at the same time)
- 2 recompile digiKam WITH libkexiv2 against Exiv2 0.24 (the more recent
version found will be used)

Gilles Caulier

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[jean-pierre.verrue]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #16 from [hidden email] ---
(In reply to Gilles Caulier from comment #15)

> Here my system has Exiv2 0.23 (Mageia).
>
> I use Exiv2 0.24 to :
>
> - 1 recompile Exiv2 myself and install it (you can install more than one
> version of Exiv2 at the same time)
> - 2 recompile digiKam WITH libkexiv2 against Exiv2 0.24 (the more recent
> version found will be used)
>
> Gilles Caulier

Well, the bug is not blocking, recompile take a lot of time and energy. After
all, I can see the basic data on the properties tab.
I'll wait for the next release of opensuse (13.2 in November). Hoping the
libexiv2 0.23 492 dependencies are resolved !
There is still something I do not understand. Why exif data is displayed in
Properties tab and not in metadata tab? Also, why are displayed MakerNotes? In
my little mind, the data should be displayed everywhere ... or not at all.
Where is the subtlety?

JP

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[Gilles Caulier-4]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #17 from Gilles Caulier <[hidden email]> ---
Metadata Views (Exif, Maker-notes, IPTC, and XMP) are raw view where contents
is taken as well from file and filtered or not.

Properties view is a synthesis of most important metadata really stored in
database. We don't store whole Exif, Maker-notes, IPTC, and XMP.

maker-notes are a subsection from Exif. In fact Exif working group has
dedicated this place to camera makers to host private data which cannot be
cataloged by standard Exif. This is why maker-notes are displayed in dedicated
view.

Note : maker-notes are just like RAW format : a pure shame against
standardization. Nothing is documented and reverse engineering must be
processed to understand these data.

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[Peter Albrecht-2]

https://bugs.kde.org/show_bug.cgi?id=338783

--- Comment #18 from Peter Albrecht <[hidden email]> ---
(In reply to Gilles Caulier from comment #11)
> LibExiv2: 0.23 ==> this is not the last one, and it's very old now. Bug come
> from this lib. Me i use 0.24 (the last one)
> LibKExiv2: 2.3.1 : sound like the last implementation.

Same old lib seems to apply to me:
My digiKam says:
------------------ 8< ------------------
[...]
LibExiv2: 0.23
[...]
LibKDE: 4.12.5
LibKExiv2: 2.3.1
[...]
------------------ >8 ------------------

There is a media-gfx/exiv2-0.24 in gentoo's portage tree. So I started
compiling... ;)
I am not shure, if I can finish it this evening, but I hope I find time this
weekend.
I will report...

Another question:
I used media-gfx/exiv2-0.23 since "23. Feb 2013" together with
 - media-gfx/digikam-2.9.0
 - media-gfx/digikam-3.1.0
 - media-gfx/digikam-3.5.0
In all this time, I can't remember to have encountered this bug. So did digiKam
4.x break compatibility with media-gfx/exiv2-0.23?

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