[Bug 724131] colorbalance: add colorbalance meta API

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=724131
  GStreamer | gst-plugins-base | git

--- Comment #6 from Matthieu Bouron <matthieu.bouron at collabora.com> 2014-02-11 19:17:34 UTC ---
(In reply to comment #5)
> You could do the negotiation about which channels are supported with the
> allocation query with the second parameter of gst_query_add_allocation_meta().
> 
> I think in general this approach is good, but you shouldn't limit the powers of
> the colorbalance interface :) Even if nobody uses anything else than the 4
> channels.

So do you think that having contrast, brightness, hue and saturation in the
meta is enough or not ?

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