[Bug 797308] vaapiencoder: Surface concurrency issues, failed to encode frame due to 'surface in use'

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=797308

--- Comment #2 from Myles Inglis <myles.inglis at vcatechnology.com> ---
Hi,

Sorry for the delayed response.

The problem is that we have quite a complex pipeline with many custom elements.
I've tried to find a pipeline with standard gstreamer elements that
demonstrates this but most of my attempts have just resulted in a deadlock...

In theory you should see the problem if a GstBuffer is mapped in one thread
while another tries to encode it. I tried to write a small program to prove
this but again I only saw deadlocks.

I'll get back to you if I find a reliable way to reproduce the issue.

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