[Digikam-devel] [Bug 220545] Cannot write XMP sidecar files

[Gilles Caulier]

https://bugs.kde.org/show_bug.cgi?id=220545





--- Comment #11 from Gilles Caulier <caulier gilles gmail com>  2010-04-01 09:17:36 ---
about XMP sidecar support, see below my proposal :

1/ read XMP sidecar : 
 - must be used when metadata must be imported to database (scan at startup for
ex.).
 - in first image metadata must be check, including makernotes. if nothing is
find, XMP sidecar is the alternative.
 - this include all file format as images and video files.

2/ Write XMP sidecar :
 - must be used to sync image metadata with database contents.
 - in first metadata must be written in image file. If image format is read
only or not supported by Exiv2, XMP sidecar must be created. This is the case
of RAW files or video files for ex.

To manage these rules, 2 implementation must be fixed :

1/ libkexiv2, especially read and write method.
2/ digiKam MetadataHub which is the core metadata management from digiKam.
3/ digiKam metadata settings pannel where option must be added to play with XMP
sidecar.

links to code :

1/ =>
http://websvn.kde.org/trunk/KDE/kdegraphics/libs/libkexiv2/libkexiv2/kexiv2.cpp?revision=1070289&view=markup
2/ =>
http://websvn.kde.org/trunk/extragear/graphics/digikam/digikam/metadatahub.cpp?revision=1050241&view=markup
3/ =>
http://websvn.kde.org/trunk/extragear/graphics/digikam/utilities/setup/setupmetadata.cpp?revision=1075046&view=markup

Important : only libkexiv2 and digiKam from trunk must be fixed in this way.

Marcel, i forget something there ?

Gilles Caulier

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