[Bug 662777] Caps negotiation got a lot slow since the last release

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=662777
  GStreamer | gstreamer (core) | git

Vincent Penquerc'h <vincent.penquerch> changed:

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--- Comment #22 from Vincent Penquerc'h <vincent.penquerch at collabora.co.uk> 2011-11-07 14:11:05 UTC ---
Created an attachment (id=200883)
 View: https://bugzilla.gnome.org/attachment.cgi?id=200883
 Review: https://bugzilla.gnome.org/review?bug=662777&attachment=200883

gstvalue: quicker test for substraction emptiness

When we do not care about the actual resulting set,
but only whether it is empty of not, we can skip a fair bit
of GValue juggling.

Add a function that does so, since we cannot just pass NULL
to the existing API as it may be part of the API contract.

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