[gstreamer-bugs] [Bug 589991] New: [queue] limited error handling might cause pipeline appearing to hang

[GStreamer (bugzilla.gnome.org)]

If you have any questions why you received this email, please see the text at
the end of this email. Replies to this email are NOT read, please see the text
at the end of this email. You can add comments to this bug at:
  http://bugzilla.gnome.org/show_bug.cgi?id=589991

  GStreamer | gstreamer (core) | Ver: git
           Summary: [queue] limited error handling might cause pipeline
                    appearing to hang
           Product: GStreamer
           Version: git
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: manauw at skynet.be
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


If a downstream element returns an error while upstream has already put all
data into queue (including EOS), queue will simply pause without raising an
error message and not send EOS downstream either. Since upstream will no longer
call chain function, it will be unaware of any error and not perform any EOS or
error posting logic either.  So, application receives neither EOS nor any error
message although streaming has stopped (making it typically appear to "hang").

Note that there may be downstream fatal errors (e.g. negotiation) that do not
warrant an error message already having been posted (by downstream).

Also note that the same issue affects queue2 as well.


-- 
See http://bugzilla.gnome.org/page.cgi?id=email.html for more info about why you received
this email, why you can't respond via email, how to stop receiving
emails (or reduce the number you receive), and how to contact someone
if you are having problems with the system.

You can add comments to this bug at http://bugzilla.gnome.org/show_bug.cgi?id=589991.