[gstreamer-bugs] [Bug 519088] New: gst_mulawdec_chain() may call gst_util_uint64_scale_int() with denom=0

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-good | Ver: HEAD CVS
           Summary: gst_mulawdec_chain() may call
                    gst_util_uint64_scale_int() with denom=0
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: minor
          Priority: Normal
         Component: gst-plugins-good
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: pkj at axis.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


Please describe the problem:
The change in gst-plugins-good/gst/law/mulaw-decode.c:gst_mulawdec_chain() to
calculate the duration from the rate and channels causes an assertion in
gst_util_uint64_scale_int() if there is no caps with these values set (it will
get a denom of 0). I know too little about the linking of a pipeline to tell
whether this should have been prevented already at the time the pipeline was
linked, or if it is allowed to reach gst_mulawdec_chain() without a caps which
does not contains rate or channels.

Steps to reproduce:
gst-launch fakesrc ! mulawdec ! fakesink

Actual results:


Expected results:


Does this happen every time?


Other information:


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