[gstreamer-bugs] [Bug 516436] New: [dvdsub] segfault on display of 1st subpicture in 2nd chapter [Japanese Harry Potter DVD]

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-bad | Ver: HEAD CVS
           Summary: [dvdsub] segfault on display of 1st subpicture in 2nd
                    chapter [Japanese Harry Potter DVD]
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: tal_gnome at shalif.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Please describe the problem:
Watching the first Harry Potter movie (Japanese, NTSC), with the default
(Japanese) subpictures turned-on works fine through the 1st chapter. At the
beginning of the 2nd chapter, right before the first subpicture is about to be
displayed, a segfault occurs in gstdvdspu-render.c

Steps to reproduce:
Note: I was only able to reproduce it with the one DVD: Japanese version of
"Harry Potter and the Philosopher's stone"
1. gst-launch dvdreadsrc ! queue ! dvddemux name=demux .current_video ! queue !
mpeg2dec ! ffmpegcolorspace ! dvdspu name=mix ! ffmpegcolorspace ! xvimagesink 
demux.current_subpicture ! mix.subpicture
2. watch until it crashes, just before displaying the first Japanese subtitle
in second chapter (English equivalent is "Up!")
3. 


Actual results:
application throws segfault

Expected results:
normal play

Does this happen every time?
Yes, providing the Japanese subtitle is turned on (current_subpicture or
subpicture_00, subpicture_01 are all Japanese). It does not happen if the
English subpicture is turned on (i.e. subpicture_02)

Other information:
Checking for "state->line_ctrl_i != 0" seems to work around this problem.


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