[gstreamer-bugs] [Bug 548652] New: unclear location tag

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gstreamer (core) | Ver: HEAD CVS
           Summary: unclear location tag
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: ensonic at sonicpulse.de
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


We have GST_TAG_LOCATION, which according to the docs that is:
"original location of file as a URI (string)"

First we should probably fix plugins that are not using it as such or redefine
it.

/home/ensonic/projects/gstreamer/gst-plugins-base/gst-libs/gst/tag/gstvorbistag.c
LOCATION : Location where track was recorded

/home/ensonic/projects/gstreamer/gst-plugins-base/tests/check/libs/tag.c
ASSERT_TAG_LIST_HAS_STRING (list, GST_TAG_LOCATION, "Bristol, UK");


I'd like to support location information from EXIF and MP4/3GP tags:

In MP4/3GP we have 'loci' udta atom which among other things defines
Name            String  Text of place name
Longitude       Unsigned int(32)        Fixed-point value of the longitude
Latitude        Unsigned int(32)        Fixed-point value of the latitude
Altitude        Unsigned int(32)        Fixed-point value of the altitude
AstronomicalBody        String  Text of astronomical body

we could map name to GST_TAG_LOCATION and define
GST_TAG_LOCATION_{LONGITUDE,LATITUDE,ALTITUDE} for the GSP location.

I think we can live for a while without AstronomicalBody.

EXIF has a lot more
http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/GPS.html


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