[gstreamer-bugs] [Bug 533581] New: [mad] inconsistent use of rate and channels

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-ugly | Ver: HEAD CVS
           Summary: [mad] inconsistent use of rate and channels
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-ugly
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: bilboed at bilboed.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


the mad plugin currently uses values from the mad_frame structure in places
where we risk getting inconsistent values.

For example, when scrubbing on big files, we risk triggering the "failed sync
after seek" case... but the new rate/channels values are not stored until we
get that error three times in a row (see gst_mad_check_caps_reset()). Then when
the chain function is going to calculate the number of samples of the incoming
buffer, it will be using the bogus rate/channels and not the stored values.

This can cause issues as weird as giving negative durations for buffers.


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