[gstreamer-bugs] [Bug 533365] New: dvdlpcmdec no chainfunction

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-ugly | Ver: 0.10.15
           Summary: dvdlpcmdec no chainfunction
           Product: GStreamer
           Version: 0.10.15
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: blocker
          Priority: Normal
         Component: gst-plugins-ugly
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: chen_yong007 at yahoo.com.cn
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.19/2.20
   GNOME milestone: Unspecified


Please describe the problem:
I write a plugin named "myplugin" to finish source and demux function. it has 2
src pads: current_video and current_audio, audio caps = audio/x-lpcm,
width=(int)16, rate=(int)48000, channels=(int)2, dynamic_range=(int)128,
emphasis=(boolean)false, mute=(boolean)false, while i run the following
command, a error occured:
gst-launch-0.10  myplugin file=/home/everchen/Media/LPCM.mpg audiofmt=2
.current_audio ! queue ! dvdlpcmdec ! audioconvert ! osssink

error information:
/pipeline0/myplugin0.current_audio: caps = audio/x-lpcm, width=(int)16,
rate=(int)48000, channels=(int)2, dynamic_range=(int)128,
emphasis=(boolean)false, mute=(boolean)false
pipeline0/dvdlpcmdec0：Internal GStreamer error: pad problem.  Please file a
bug at http://bugzilla.gnome.org/enter_bug.cgi?product=GStreamer.
Additional debug information：
gstpad.c(3565): gst_pad_chain_unchecked (): /pipeline0/dvdlpcmdec0:
push on pad dvdlpcmdec0:sink but it has no chainfunction
ERROR: pipeline doesn't want to preroll.
Setting pipeline to NULL ...

Note: i can use dvddemux playback this LPCM.mpg, like this:
gst-launch-0.10 filesrc location=/home/everchen/Media/LPCM.mpg ! dvddemux
.current_audio ! queue ! dvdlpcmdec ! audioconvert ! osssink

Can anyboday tell me why?


Steps to reproduce:
1. 
2. 
3. 


Actual results:


Expected results:


Does this happen every time?


Other information:


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You can add comments to this bug at http://bugzilla.gnome.org/show_bug.cgi?id=533365.