Otherwise if there is a huge gap it will only be considered a
discontinuity after another discont-time amount of buffers has passed.
Like this it will be immediately a discontinuity if the gap between the
expected and received time becomes bigger than the discont-time.
The last part of the test was actually testing for this behaviour and
expected the previous behaviour. Most other tests also had to be
adjusted because discont will now happen at slightly different times
than before.
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5759>
Don't call wait_event() at all for gap events, as basesink will
end up waiting for the time that the gap event would be rendered
out at the audio device. There's no need to render it at all,
just treat it as a handy point to resync the audio if needed,
let the ringbuffer render silence, and place the next buffer
into the ringbuffer where it belongs.
The only thing we really need to do is make sure the ringbuffer
and clock are running, and wait for preroll.
Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/2749
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5178>
