[gstreamer-bugs] [Bug 637419] New: using appsrc through playbin2 does not work

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=637419
  GStreamer | gst-plugins-base | 0.10.28

           Summary: using appsrc through playbin2 does not work
    Classification: Desktop
           Product: GStreamer
           Version: 0.10.28
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-plugins-base
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: qedguy at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
      GNOME target: ---
     GNOME version: ---


Ok so i use the following snippet of code so that i can use the appsrc
element for media playback in playbin2.

m_playbin is a playbin2.


g_object_set(G_OBJECT(m_playbin), "uri", "appsrc://", NULL);
g_signal_connect(G_OBJECT(m_playbin), "deep-notify::source", (GCallback)
&QGstreamerPlayerSession::appSrcElementReady, this);

//static class method
void QGstreamerPlayerSession::appSrcElementReady(GObject* object, GObject
*orig,
                                           GParamSpec *pspec,
QGstreamerPlayerSession* _this)
{
    if (_this == 0)
        return;
    // get handle to appsrc
    GstElement *appsrc = 0; 
    g_object_get(orig, "source", appsrc, NULL);
    if (appsrc == 0)
        qDebug()<<"appsrc is null ";

    if (!_this->appsrc()->configure(GST_APP_SRC(appsrc))) {
        qWarning()<<"could not configure appsrc element";
    }
}

The callback appSrcElementReady is invoked. But i get a NULL appsrc
element from the "source" property.

I get this warning too: (<unknown>:16850): GLib-GObject-WARNING **:
IA__g_object_get_valist: value location for `GstElement' passed as NULL


Idea taken from:
http://gst-plugins-bad0.10.sourcearchive.com/documentation/0.10.9-1/appsrc-stream2_8c-source.html

Are there any work around's for this? Unfortunately I'm constrained to
gstreamer-0.10.28 as the later versions are too unstable for us in general.

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