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

Thu Oct 11 12:41:21 BST 2012

=>> 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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>>
>
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