[Bug 796737] ASYNC_DONE message is dropped leading to hanging application

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796737

--- Comment #11 from Sebastian Dröge (slomo) <slomo at coaxion.net> ---
(In reply to Joakim Johansson from comment #10)

> I will see if I can solve our problem from the application side

It would be a workaround, yes :)

> but then
> again, you still have a race condition in gstreamer where the async_done can
> be dropped.

Agreed, but I'm not sure at this point what the correct behaviour would even be
in this case. There are conflicting requirements here.

Generally you will run into problems with the current state design if you have
bottom-up state changes (flushing/lost-state and async-start) mixed with
top-down state changes (set_state()). And giving preference to either of the
two over the other, or even performing them both, can lead to wrong situations
from what I can see.

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