[Bug 741146] aggregator: deadline based aggregation

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=741146
  GStreamer | gst-plugins-bad | git

--- Comment #4 from Sebastian Dröge (slomo) <slomo at coaxion.net> 2014-12-06 15:42:44 UTC ---
Even when the buffer comes from a bufferpool, it wouldn't contain any useful
information that would allow to get a timestamp. I think Olivier's proposal of
a get_next_time() or similar makes sense in this situation, as we want to wait
until we create the next buffer.


Independent of that there is also something missing to make this useful in
combination with videoaggregator. videoaggregator currently drops frames that
arrive too late. But this can mean that an even older frame is kept around and
not updated, and even if there is no older frame it means that instead of
showing an old frame we show nothing. I think for live mode (and in general
maybe?) it should always keep around the latest buffer, but if it's too old it
should just not trigger rendering with that buffer until the deadline.

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