[Bug 791353] New: interaudio: Add option to enable/disable gap flags in nullsample buffers

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=791353

            Bug ID: 791353
           Summary: interaudio: Add option to enable/disable gap flags in
                    nullsample buffers
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: dv at pseudoterminal.org
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

If the interaudio channel runs out of data, nullsample buffers are created.
interaudiosrc sets the GAP flag of these buffers. In some cases, it may
be preferable to not set the flag (for example, to produce one continuous
seamless stream even if the other side of the channel is currently paused).

One such case would be a system with a producer and a consumer pipeline, linked
together through an interaudio channel. The consumer pipeline always runs,
while
the producer pipeline may sometimes be stopped, seeking, paused etc. In such a
case, it is necessary to make sure the consumer's interaudiosrc produces a
continuous stream. GAP flags would introduce unnecessary resynchronization
events
inside the consumer pipeline's audio sink.

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