[Bug 747270] avfvideosrc: BUFFER_QUEUE_SIZE too small

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=747270

--- Comment #9 from Nicolas Dufresne (stormer) <nicolas.dufresne at collabora.co.uk> ---
(In reply to Cecill Etheredge (ijsf) from comment #7)
> Thanks, that makes sense for a buffered system.
> 
> On a different note.. why use a buffer at all and not push directly to
> wherever it needs to go?

Queues are useful to ensure a parallelism between the driver processing and the
GStreamer pipeline. So while a buffer is being pushed downstream, the driver
should be preparing the next buffer. (assuming you mean why use queues). AVF
Has quite some code, and I suppose it's not entirely needed. It is likely done
this way to fit the push src model (which is the easiest way to write a source
in GST).

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