[Digikam-users] Digikam 2.9: Save image comments to file

Thu Oct 11 13:15:10 BST 2012

I turned on exiv2 debugging, giving me the following output when saving 
metadata:
-------------------

digikam(18633)/KEXIV2 KExiv2Iface::KExiv2::save: KExiv2::metadataWritingMode 2

digikam(18633)/KEXIV2 KExiv2Iface::KExiv2::save: Will write Metadata to file "01_Philadelphia-1.JPG"

digikam(18633)/KEXIV2 KExiv2Iface::KExiv2::KExiv2Priv::saveToFile: File Extension:  "jpg"  is supported for writing mode

...

digikam(18633)/KEXIV2 KExiv2Iface::KExiv2::save: Metadata for file "01_Philadelphia-1.JPG" written to file.

digikam(18633)/KEXIV2 KExiv2Iface::KExiv2::save: Will write XMP sidecar for file "01_Philadelphia-1.JPG"

-------------------

So KExiv2 itself works, but still only x-default is saved.
Is there a way to test by a console command if the language support in 
exiv2 is somehow broken?
Btw, I am using exiv2 version 0.23-6.1 and libkexiv2 version 4.9.2-42.1.

Regards,
Markus

Am 11.10.2012 13:41, schrieb Gilles Caulier:
> =>> Exiv2 supports XMP metadata: Yes
>
> This can be the problem. I remember a bug where this info is show as
> "Yes", where it's "No" in fact.
>
> Bug is in libkexiv2, already fixed of course.
>
> Multi-language Caption is managed through Exiv2 library using XMP metadata...
>
> Gilles Caulier
>
> 2012/10/11 Markus Ebert <strohhirn at gmx.de>:
>> Hi,
>>
>> thanks for your help, I made at least a littele progress.
>> Firstly,  the output of "Components Information":
>> --------------------------------
>>
>>
>> digiKam version 2.9.0
>>
>> 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
>>
>> LibClapack: internal library
>>
>> LibExiv2: 0.23
>>
>> LibJPEG: 62
>>
>> LibJasper: 1.900.1
>>
>> LibKDE: 4.9.2 "release 511"
>>
>> LibKExiv2: 2.3.0
>>
>> LibKGeoMap: 2.0.0
>>
>> LibKdcraw: 2.1.0
>>
>>
>> LibLCMS: 119
>>
>> LibLensFun: external shared library
>>
>> LibLqr: internal library
>>
>> LibPGF: 6.12.27 - internal library
>>
>> LibPNG: 1.4.11
>>
>> LibQt: 4.8.3
>>
>> LibRaw: 0.14.6
>>
>>
>> LibTIFF: LIBTIFF, Version 4.0.2 Copyright (c) 1988-1996 Sam Leffler
>> Copyright (c) 1991-1996 Silicon Graphics, Inc.
>>
>> Marble Widget: 0.14.1 (stable release)
>>
>>
>> Parallelized PGF codec: No
>>
>> Parallelized demosaicing: Yes
>>
>> Database backend: QSQLITE
>>
>> LibGphoto2: 2.4.14
>>
>> LibKface: 2.0.0
>>
>> LibKipi: 1.6.0
>>
>> LibOpenCV: 2.4.2
>>
>> Libface: 0.2
>>
>> --------------------------------
>>
>> It seems to contain everything.
>>
>>
>> In the mean time, I figured out that saving comments with language
>> "x-default" works, but using "lang=de-DE" does not. When saving the title,
>> the language does not matter.
>> Here's the debugging output for both cases:
>>
>> 1) Using "lang=x-default" (working)
>> --------------
>>
>> digikam(3612)/digikam (core) Digikam::DMetadata::setImageTitles:
>> "/home/user/bilder/DSC_1229.JPG"  ==> Title:  QMap(("de-DE",
>> CaptionValues::caption: "mytitle", CaptionValues::author: "",
>> CaptionValues::date: QDateTime("")  ) )
>>
>> digikam(3612)/digikam (core) Digikam::DMetadata::setImageComments:
>> "/home/user/bilder/DSC_1229.JPG"  ==> Comment:  QMap(("x-default",
>> CaptionValues::caption: "mycaption", CaptionValues::author: "",
>> CaptionValues::date: QDateTime("Thu Oct 11 12:24:26 2012")  ) )
>>
>> --------------
>>
>> 2) Using "lang=de-DE" (not working)
>> --------------
>>
>> digikam(3612)/digikam (core) Digikam::DMetadata::setImageTitles:
>> "/home/user/bilder/DSC_1229.JPG"  ==> Title:  QMap(("de-DE",
>> CaptionValues::caption: "mytitle", CaptionValues::author: "",
>> CaptionValues::date: QDateTime("")  ) )
>> digikam(3612)/digikam (core) Digikam::DMetadata::setImageComments:
>> "/home/user/bilder/DSC_1229.JPG"  ==> Comment:  QMap(("de-DE",
>> CaptionValues::caption: "mycaption", CaptionValues::author: "",
>> CaptionValues::date: QDateTime("Thu Oct 11 12:23:48 2012")  ) )
>>
>> -----------------
>>
>> At least now I know how to do a workaround by using only x-default. However
>> it would be great to get de-DE to work since I don't want to switch the
>> language of ~3000 captions by hand.
>>
>>
>> Regards,
>> Markus
>>
>>
>>
>> Am 11.10.2012 09:55, schrieb Peter Albrecht:
>>
>>> On 10.10.2012 22:05, Markus Ebert wrote:
>>>> I suspect that something is wrong with a tool digikam relies
>>>> on (e.g. exiftool did not work out box as it turned out
>>>> dependencies were wrong),
>>> In DigiKam, go to "Help" -> "Components Information" and
>>> post the output on the mailing list.
>>>
>>> Mine looks like:
>>> -------------------------- 8< ------------------------------
>>>> digiKam version 2.9.0
>>>> 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
>>>> LibClapack: external shared library
>>>> LibExiv2: 0.21.1
>>>> LibJPEG: 80
>>>> LibJasper: 1.900.1
>>>> LibKDE: 4.8.5 (4.8.5)
>>>> LibKExiv2: 2.1.0
>>>> LibKGeoMap: 2.0.0
>>>> LibKdcraw: 2.0.1
>>>> LibLCMS: 119
>>>> LibLensFun: external shared library
>>>> LibLqr: internal library
>>>> LibPGF: 6.12.27 - external shared library
>>>> LibPNG: 1.5.10
>>>> LibQt: 4.8.2
>>>> LibRaw: 0.14.4
>>>> LibTIFF: LIBTIFF, Version 4.0.2 Copyright (c) 1988-1996 Sam Leffler
>>>> Copyright (c) 1991-1996 Silicon Graphics, Inc.
>>>> Marble Widget: 0.13.4 (stable release)
>>>> Parallelized PGF codec: No
>>>> Parallelized demosaicing: Yes
>>>> Database backend: QSQLITE
>>>> LibGphoto2: 2.4.12
>>>> LibKface: 2.0.0
>>>> LibKipi: 1.3.0
>>>> LibOpenCV: 2.3.1
>>>> Libface: 0.2
>>> -------------------------- >8 ------------------------------
>>>
>>> Maybe this helps identifying an old library.
>>>
>>>
>>>> ... so is there a possibility to turn
>>>> on a debug mode such that I can see what happens when
>>>> digikam tries to write the metadata? Or maybe a logfile?
>>>> (Starting in console doesn't reveal anything)
>>> To enable debug output: Start the programm "kdebugdialog",
>>> search for "digikam" and select all checkboxes. Click "OK"
>>> and start digikam from your terminal.
>>>
>>> Applying title ("mytitle") and caption ("mycaption"), I get
>>> the following debug output:
>>> -------------------------- 8< ------------------------------
>>>> digikam(3572)/digikam (core) Digikam::DMetadata::setImageTitles:
>>>> "/home/user/pictures/Pow-img_1418.jpg"  ==> Title:  QMap(("x-default",
>>>> CaptionValues::caption: "mytitle", CaptionValues::author: "",
>>>> CaptionValues::date: QDateTime("")  ) )
>>>> digikam(3572)/digikam (core) Digikam::DMetadata::setImageComments:
>>>> "/home/user/pictures/Pow-img_1418.jpg"  ==> Comment:  QMap(("x-default",
>>>> CaptionValues::caption: "mycaption", CaptionValues::author: "",
>>>> CaptionValues::date: QDateTime("Do. Okt 11 09:50:17 2012")  ) )
>>>> digikam(3572)/digikam (core) Digikam::DMetadata::setImageRating: Rating
>>>> value to write is out of range!
>>>> digikam(3572)/KEXIV2 KExiv2Iface::KExiv2::KExiv2Priv::saveToFile: File
>>>> Extension:  "jpg"  is supported for writing mode
>>>> digikam(3572)/digikam (core) Digikam::AlbumWatch::rescanDirectory:
>>>> Detected change, triggering rescan of directory "/home/px79/daten/Bilder
>>>> (private)/Fotos unsortiert/Incoming"
>>>> digikam(3572)/digikam (core) Digikam::AlbumWatch::rescanDirectory:
>>>> Detected change, triggering rescan of directory "/home/px79/daten/Bilder
>>>> (private)/Fotos unsortiert/Incoming"
>>>> digikam(3572)/digikam (core) Digikam::AlbumWatch::rescanDirectory:
>>>> Detected change, triggering rescan of directory "/home/px79/daten/Bilder
>>>> (private)/Fotos unsortiert/Incoming"
>>>> digikam(3572)/digikam (core) Digikam::AlbumWatch::rescanDirectory:
>>>> Detected change, triggering rescan of directory "/home/px79/daten/Bilder
>>>> (private)/Fotos unsortiert/Incoming"
>>>> digikam(3572)/digikam (core) Digikam::AlbumWatch::rescanDirectory:
>>>> Detected change, triggering rescan of directory "/home/px79/daten/Bilder
>>>> (private)/Fotos unsortiert/Incoming"
>>>> digikam(3572)/KEXIV2 KExiv2Iface::KExiv2::save: Metadata for file '
>>>> Pow-img_1418.jpg ' written to file.
>>> -------------------------- >8 ------------------------------
>>>
>>> Regards,
>>>          Peter
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>>> Digikam-users at kde.org
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