[Bug 754567] Gst.Video.calculate_display_ratio should have out parameter

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=754567

Luca Bruno <lucabru at src.gnome.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |lucabru at src.gnome.org
          Component|Bindings: GTK+ GStreamer    |gst-plugins-base
                   |WebKitGTK+                  |
            Version|0.28.x                      |git master
           Assignee|vala-maint at gnome.bugs       |gstreamer-bugs at lists.freede
                   |                            |sktop.org
            Product|vala                        |GStreamer
   Target Milestone|---                         |git master
         QA Contact|vala-maint at gnome.bugs       |gstreamer-bugs at lists.freede
                   |                            |sktop.org

--- Comment #1 from Luca Bruno <lucabru at src.gnome.org> ---
It's indeed missing annotations in the C code:
https://github.com/gstreamer-mirror/gst-plugins-base/blob/19d714fa2f95f67c9ad94db7c359a1c7affe40d4/gst-libs/gst/video/video.c#L64

I think it should be something like:

 * @dar_n: (out) (allow-none): Numerator of the calculated display_ratio
 * @dar_d: (out) (allow-none): Denominator of the calculated display_ratio

Reassigning to gstreamer.

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