[Bug 646868] New: Provide Creative Commons helper functions

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=646868
  GStreamer | gst-plugins-base | unspecified

           Summary: Provide Creative Commons helper functions
    Classification: Platform
           Product: GStreamer
           Version: unspecified
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: hadess at hadess.net
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


In the same way that we provide iso-codes helper functions in
gst_tag_get_language_*().

liblicense (packaged by most distributions), provides a simple RDF file per
license URL.

So one would:
- grab the GST_TAG_LICENSE_URI (eg.
http://creativecommons.org/licenses/by/2.5/it/)
- and from it, deduce the RDF filename (eg.
creativecommons.org_licenses_by_2.5_it_.rdf) and parse it

And give access to various fields of that file, for example:
- identifier
- translated name
- translated description
- permits, requires and prohibits [1]
- version

from [1] and the identifier, front-ends applications could easily show the
"usual" CC icons.

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