[Bug 658419] New: Add FIR support to rtpsession

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=658419
  GStreamer | gst-plugins-good | git

           Summary: Add FIR support to rtpsession
    Classification: Platform
           Product: GStreamer
           Version: git
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.freedesktop.org
        ReportedBy: olivier.crete at ocrete.ca
         QAContact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---


I have two sets of patches to add support for RFC 5104 RTCP FIR  (Full Intra
Request). The first set is for receiving FIR requests and just emits an
upstream GstForceKeyUnit event with all-headers=TRUE. It also includes a patch
to -base to add the numbers from RFC 5104 to the rtcpbuffer.h header.

The second set adds support for sending FIR requests. I think it should only be
used when the RTP depayloader detects that the codec data is missing. Which
would happen if you switch sources or something. The problem is that the FIR
request has a sequence number that should not be incremented if the same
request is being re-transmitted. So I think this requires adding a count number
to the GstForceKeyUnit event (see bug #607742 comment #24).

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