[gstreamer-bugs] [Bug 602419] New: [basesink] Regression with position reporting

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=602419
  GStreamer | gstreamer (core) | 0.10.x

           Summary: [basesink] Regression with position reporting
    Classification: Desktop
           Product: GStreamer
           Version: 0.10.x
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: slomo at circular-chaos.org
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Hi,
see bug #585969 comment #7.

This is caused by this commit
http://cgit.freedesktop.org/gstreamer/gstreamer/commit/?id=f83ea8233bf1661bdab0d4ec6f08169d7c664452

Position reporting between the group switch results in:
[...]
0:00:04.913886000 / 0:00:06.965986394
0:00:05.412122000 / 0:00:06.965986394
0:00:01.000000000 / 0:00:05.804988662
0:00:00.420986000 / 0:00:05.804988662
0:00:00.921070000 / 0:00:05.804988662
[...]

That weird 1 second is caused by the base time being larger (6965986394) than
the clock time (6717317000), resulting in GST_CLOCK_DIFF (base, now) < 0.

Then basetime is set to -clocktime and a few times later the position is
calulated as follows:
*cur = time + gst_guint64_to_gdouble (now - base) * rate;

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