[digiKam-users] Sidecar XMPs not read for TIFF

[Gilles Caulier]

Hi,

N:/ is a local drive or a remote drive ?

What's about the naming scheme used with image file and xmp sidecar ?

What's about the DK setup metadata settings exactly ?

There is no reason to see a difference between JPEG and TIFF about the XMP
sidecar.

Can you share the images including the XMP sidecars to try to reproduce
under linux ?

About the code, the core implementation of metadata management is delegate
to Exiv2 shared library. For all bundles, we use last stable 0.26.

In DK core, we have a Qt wrapper located here :

https://phabricator.kde.org/source/digikam/browse/master/core/libs/dmetadata/

The read/write operation, including XMP sidecar management is routed in
this implementation :

https://phabricator.kde.org/source/digikam/browse/master/core/libs/dmetadata/metaengine.cpp$268

You have a section about XMP support which will call dedicated methods from
Exiv2.

In top level of this class we have a hub to branch metadata type depending
of user settings from DK setup dialog. It's more complicated, but as i see,
the problem is more in low level for the moment.

Best

Gilles Caulier

2018-06-30 3:24 GMT+02:00 Frank Uzzolino <frank.jpf1 at gmail.com>:

> Hi everyone,
>
> I've been playing around with digikam for about a year and am ready to
> convert my Picasa library.  While testing, the face and name metadata for
> JPGs converted fine, however the TIFF file info was not.  I have XMP
> sidecar files for every photo, and the data is present in the XMPs for both
> JPG and TIFF files.
>
> From the debug log, it appears the metaengine is not reading all the data
> from the XMPs. (I've included pieces of the debug log at the end of this
> email).
>
> I just started digging through the code, but if anyone has seen this
> before, it would be a big help.
>
> Thanks,
>
> -Frank
>
> ---------
>
> "Good" file (i.e. JPG)
>
> *00456102    1692.69323730    [6224] digikam.dimg:
> "N:/MediaDk/Master/Pictures/Scanned Prints/testfile1.jpg"  : JPEG file
> identified
> *00456103    1692.69677734    [6224] digikam.database: Adding new item
> "N:/MediaDk/Master/Pictures/Scanned Prints/testfile1.jpg"
>  00456104    1692.69714355    [6224] digikam.metaengine: DateTime =>
> Xmp.xmp.ModifyDate => QDateTime(2017-04-17 00:37:54.000 UTC-04:00
> Qt::TimeSpec(OffsetFromUTC) -14400 s )
>  00456105    1692.69726563    [6224] digikam.metaengine: DateTime =>
> Xmp.xmp.ModifyDate => QDateTime(2017-04-17 00:37:54.000 UTC-04:00
> Qt::TimeSpec(OffsetFromUTC) -14400 s )
>  00456106    1692.69934082    [6224] digikam.metaengine:
> "N:/MediaDk/Master/Pictures/Scanned Prints/testfile1.jpg"  ==> Read Iptc
> Keywords:  ()
>  00456107    1692.69970703    [6224] digikam.metaengine: Found new rect
> "Last1, FirstName1"   QRectF(0.602719,0.240537 0.10423x0.11931)
>  00456108    1692.69982910    [6224] digikam.metaengine: Found new rect
> "Last2, FirstName2"   QRectF(0.588117,0.428845 0.103223x0.117393)
>  00456109    1692.69995117    [6224] digikam.metaengine: Found new rect
> "Last3, FirstName3"   QRectF(0.47583,0.511739 0.109265x0.124581)
>  00456110    1692.70007324    [6224] digikam.metaengine: Loading image
> history  ""
> *00456111    1692.70031738    [6224] digikam.database: Scanning took 7
> ms
>  00456112    1692.70043945    [6224] digikam.database: Candidate with set
> full name: 87 "Last1, FirstName1"
>  00456113    1692.70043945    [6224] digikam.database: Adding face with
> rectangle   QRect(1197,502 207x249)  to database
>  00456114    1692.70080566    [6224] digikam.database: Candidate with set
> full name: 29 "Last2, FirstName2"
>  00456115    1692.70092773    [6224] digikam.database: Adding face with
> rectangle   QRect(1168,895 205x245)  to database
>  00456116    1692.70104980    [6224] digikam.database: Candidate with set
> full name: 63 "Last3, FirstName3"
>  00456117    1692.70129395    [6224] digikam.database: Adding face with
> rectangle   QRect(945,1068 217x260)  to database
> *00456118    1692.70141602    [6224] digikam.database: Finishing took 0
> ms
>
>
> "Bad" file (i.e. TIFF)
>
> *00483002    1786.14965820    [6224] digikam.dimg:
> "N:/MediaDk/Master/Pictures/Scanned Prints/testfile2..tif"  : TIFF file
> identified
> *00483003    1786.15100098    [6224] digikam.database: Adding new item
> "N:/MediaDk/Master/Pictures/Scanned Prints/testfile2.tif"
>  00483004    1786.15136719    [6224] digikam.metaengine: Orientation =>
> Exif.Image.Orientation => 1
> *00483005    1786.15234375    [6224] digikam.database: Scanning took 16
> ms
> *00483006    1786.15283203    [6224] digikam.database: Finishing took 0
> ms
>
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