[gstreamer-bugs] [Bug 588915] New: audioresample's output offset counter's initialization could maybe be improved

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-plugins-base | Ver: git
           Summary: audioresample's output offset counter's initialization
                    could maybe be improved
           Product: GStreamer
           Version: git
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: kcannon at ligo.caltech.edu
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


audioresample initializes its output sample counter (for populating the output
buffer offsets) by scaling the timestamp of the first input buffer by the input
stream's sample rate.  For streams whose timestamps are derived from some
external absolute clock (e.g. security camera feeds, data from scientific
instruments) and therefore don't start at 0, this results in the audioresample
element generating output buffers with "crazy" offsets.

I request that instead of scaling the timestamp of the first buffer by the
sample rate, the ->next_offset field be initialized by scaling the offset of
the burst buffer by the ratio of output to input sample rates.  This reproduces
the current behaviour for streams whose timestamps and offsets start at 0 but
produces more useful buffer offsets in streams whose timestamps don't start at
0.


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