[Bug 784044] basesrc: Should not re-allocate buffers on EOS

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=784044

--- Comment #5 from Nicolas Dufresne (stormer) <nicolas at ndufresne.ca> ---
Did a quick implementation, it speed up a little bit the EOS handling with UVC
driver, but it does not workaround the driver race described in bug #783945.
Flushing the pool still trigger a flush on the driver side, which is a quick
trigger of STREAMOFF/STREAMON, which seems to be triggering the race. This is a
terrible bug in the driver/hw imho. That basically means, if you want to work
around this, you need to detach streaming state from the pool, that's a lot
more work, but likely a good idea.

I'll post of my fix later after some more testing, it's does not matter if
another bug is fixed or not by this one.

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