[gstreamer-bugs] [Bug 321790] New: [mpegstream] improve packetize to detect incorrect data

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gst-plugins-ugly | Ver: HEAD CVS

           Summary: [mpegstream] improve packetize to detect incorrect data
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: enhancement
          Priority: Normal
         Component: gst-plugins-ugly
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: josef.zlomek at xeris.cz
         QAContact: gstreamer-bugs at lists.sourceforge.net
                CC: all-bugs at bugzilla.gnome.org


The attached patch makes MPEG packetize to detect invalid data in the MPEG
stream (in most cases) and skip it.

It finds out the length of the current chjunk in the MPEG stream. Then it finds
out whether there is a start code after the current chunk. If there is not the
start chunk, some data in the stream are probably missing, i.e. the current
chunk is cut. So packetize skips one byte of current chunk and looks for the
next start code. Therefore it effectively skips the cur current chunk.

This improves stability when the source of MPEG stream is UDP, but not
completely, unfortunatelly.

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