[Bug 743905] multiqueue: handle the BUFFERING query

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=743905

--- Comment #9 from Duncan Palmer <dpalmer at digisoft.tv> ---
(In reply to Thiago Sousa Santos from comment #6)

> Why isn't just getting the buffering level from the messages enough here?
> What do you gain by using queries?

The reason we do this is because we have a module which creates our pipeline,
and hands it off to another module to manage (one of those historical things
we'd like to change now...). So, the simplest way for the module managing the
pipeline to know whether it's buffering is to query it.

So, in answer to your question, I think the only thing to be gained is
flexibility in making use of the pipeline.

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