Am Mittwoch, 5. März 2014, 12:50:24 schrieb Steve Boyer:
> I've noticed that photos created in LightRoom when uploaded to FaceBook
> automatically pull copyright information embedded in the EXIF info into the
> comments. Despite putting information in all of the EXIF areas when
> exporting a JPG, I have been unable to replicate this using Darktable.
> 
> Digging through the source, I found in lines 1098 - 1103 of
> src/common/exif.cc:
> 
>       res = dt_metadata_get(imgid, "Xmp.dc.rights", NULL);
>       if(res != NULL)
>       {
>         exifData["Exif.Image.Copyright"] = (char*)res->data;
>         g_list_free_full(res, &g_free);
>       }
> 
> pulling entered information from src/libs/metadata.c:
> 
> line 218:
>       gchar *rights      =
> gtk_combo_box_text_get_active_text(GTK_COMBO_BOX_TEXT(d->rights));
> lines 226-227:
>       if(rights != NULL && (d->multi_rights == FALSE ||
> gtk_combo_box_get_active(GTK_COMBO_BOX(d->rights)) != 0))
>         dt_metadata_set(mouse_over_id, "Xmp.dc.rights", rights);
> 
> My question is should the Xmp.xmpRights.Marked bool be set true (
> http://www.exiv2.org/tags-xmp-xmpRights.html) in addition to this? Or would
> it make more sense if the information be stored in the Xmp.plus section (
> http://www.exiv2.org/tags-xmp-plus.html)?
> 
> I am unfamiliar with how DT, LR, and FaceBook handles this and was hoping
> someone could shed some light on it.

I don't know about LR or FaceBook, but darktable's metadata handling isn't 
exactly where I would like it to be. Since my other pet project (iop 
introspection) made good progress I hope to get back to all this metadata stuff 
soonish. Until then I guess we will not do any quick fixes, just to throw them 
away later.

> Thanks!
> Steven Boyer

Tobias

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