[gstreamer-bugs] [Bug 433442] New: gst_element_link fails on playing elements in different bins.

GStreamer (bugzilla.gnome.org) bugzilla-daemon at bugzilla.gnome.org
Wed Apr 25 14:32:34 PDT 2007


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  GStreamer | gstreamer (core) | Ver: HEAD CVS
           Summary: gst_element_link fails on playing elements in different
                    bins.
           Product: GStreamer
           Version: HEAD CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: tester at tester.ca
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


I have a bin in a pipeline. With a src inside the bin and the sink outside.  If
I try to link both with gst_element_link while the bin is playing, it doesn't
work with 0.10.12 or CVS HEAD. It works fine with 0.10.11 and below.

I think its linked with the patch from bug #339326. Is linking running elements
even supposed to work?

This small python script exhibits the problem:

import pygtk, gtk, gobject
import pygst
pygst.require("0.10")
import gst

def linkelem():
        src.link(sink)
        sink.set_state(gst.STATE_PLAYING)

gtk.gdk.threads_init()

pipeline = gst.Pipeline()
bin = gst.Bin()
src = gst.element_factory_make("videotestsrc")
sink = gst.element_factory_make("ximagesink");
pipeline.add(bin)
bin.add(src)
pipeline.add(sink)

# Works here
#linkelem()

pipeline.set_state(gst.STATE_PLAYING)

# breaks here
linkelem()

gtk.main()


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