[gstreamer-bugs] [Bug 569673] New: [Mpegtsparse] PAT changes not always signaled

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-bad | Ver: 0.10.10
           Summary: [Mpegtsparse] PAT changes not always signaled
           Product: GStreamer
           Version: 0.10.10
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: mutex at runbox.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Please describe the problem:
While reading a MPTS file, there is some cases where PAT changes are not always
signals (via a gst_post_message).


Steps to reproduce:
1. take 2 MPTS file stream (recorded from a dvb device)
2. Use a MPTS file which mix 2 MPTS stream. A such file can be created with dd
:  dd bs=188 count=100000 if=stream1.ts of=mix.ts ; dd bs=188 count=100000
if=stream2.ts >> mix.ts ; dd bs=188 count=100000 if=stream1.ts >> mix.ts
3. run the following command: gst-launch -m filesrc location=mix.ts !
mpegtsparse | grep pat


Actual results:
There are only two pat changes reported. There should be three : one for each
part of the file.
In fact the last pat change (when mpegtsparse is back to the stream1) is
ignored.

Expected results:
There should be three PAT announcement.

Does this happen every time?
yes

Other information:
In fact, subtables are decoded for the PAT table which doesn't make sense.
A proposed patch inhibits the subtable mechanism when parsing the PAT.

It also clean mpegtspacketizer stream's structure when streams are out of date
(on pat change).

Note: I can send a mix.ts file on demand.


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