[Bug 797100] videoaggregator: allocation query management makes buffering suboptimal when using dynamic/live pipelines
GStreamer (GNOME Bugzilla)
bugzilla at gnome.org
Sun Sep 9 14:55:48 UTC 2018
https://bugzilla.gnome.org/show_bug.cgi?id=797100
--- Comment #5 from Nicolas Dufresne (ndufresne) <nicolas at ndufresne.ca> ---
Ok, looking deeper, the allocation is really dummy. As soon as we get a
reconfigure event from downstream, we will call set_src_caps() again, which
will run a new allocation query. Adding code to skip this if the caps haven't
changed (trading off the details I mention) will greatly improve performance.
I'm pretty sure the caps aren't changing often in GES use case (and most use
cases in fact). Holding on downstream allocation is only an issue for V4L2 and
OMX, which only have 1 set of allocated buffers.
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