[gstreamer-bugs] [Bug 332045] New: GstBus needs API to disable flushing in READY => NULL

[GStreamer (bugzilla.gnome.org)]

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 GStreamer | gstreamer (core) | Ver: HEAD CVS

           Summary: GstBus needs API to disable flushing in READY => NULL
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: t.i.m at zen.co.uk
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


We need some kind of API like

  gst_bus_set_auto_flushing (bus, FALSE);

to disable an element's bus from flushing all messages when going READY =>
NULL.

The flushing when going to NULL is a big pain for all applications that keep
state and update their state via state-changed messages on the bus.


For example, such an application can't just do

 gst_element_set_state (playbin, NULL);

but needs to first go to READY, wait for that to finish, then parse all
messages on the bus (to update state correctly) and then finally go to NULL.


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