Replacing videotestsrc with Playbin2 as video source

[Stefano D. Mtangoo]

Hi,
I have been playing with wxWidgets and Gst and I was unsuccesful for 
some day. Thank God today I made it, but alas it was videotestsrc. Now 
I want to test my code with real video/audio file and every attempt 
have been furtile. Before I put my code below, let me say that am new 
to Gst and that I use 1.x version
Thanks

my code
static GstBusSyncReply
create_window(GstBus * bus, GstMessage * message, gpointer user_data)
{
// ignore anything but 'prepare-window-handle' element messages
	if(!gst_is_video_overlay_prepare_window_handle_message(message))
		return GST_BUS_PASS;

	CustomData *data = reinterpret_cast<CustomData*>(user_data);

	if(data->xid!=NULL)
	{

		GstVideoOverlay *overlay;
		overlay = GST_VIDEO_OVERLAY(GST_MESSAGE_SRC(message));
		gst_video_overlay_set_window_handle(overlay, data->xid);
	}

	return GST_BUS_DROP;
}

and wx thing
wxGStreamer::wxGStreamer(wxWindow* parent, wxWindowID id, const 
wxString& uri) : wxPanel(parent, id)
{
	SetBackgroundColour(*wxBLACK);

	if(!g_thread_supported())
		g_thread_init(NULL);

	int i;
	char **argv = new char*[wxTheApp->argc + 1];

	for(i = 0; i < wxTheApp->argc; i++)
	{
		argv[i] = wxStrdupA(wxTheApp->argv[i].utf8_str());
	}

	argv[wxTheApp->argc] = NULL;

	gst_init(&wxTheApp->argc, &argv);

	// prepare the pipeline
	GstElement *pipeline = gst_pipeline_new("xvoverlay");
	GstElement *src = gst_element_factory_make("videotestsrc", NULL);
	GstElement *sink = gst_element_factory_make("xvimagesink", NULL);
	gst_bin_add_many(GST_BIN(pipeline), src, sink, NULL);
	gst_element_link(src, sink);


	GtkWidget* video_window = GetHandle();
	gtk_widget_realize(GetHandle());
	GdkWindow *videoareaXwindow =  gtk_widget_get_window(video_window);
	guintptr xid = GDK_WINDOW_XID(videoareaXwindow);

	// run the pipeline
	GstStateChangeReturn sret = gst_element_set_state(pipeline,
	                            GST_STATE_PLAYING);

	if(sret == GST_STATE_CHANGE_FAILURE)
	{
		gst_element_set_state(pipeline, GST_STATE_NULL);
		gst_object_unref(pipeline);
	}

	CustomData* data = new CustomData(xid);

	GstBus *bus = gst_pipeline_get_bus(GST_PIPELINE(pipeline));
	gst_bus_set_sync_handler(bus, (GstBusSyncHandler) create_window, data, 
NULL);
	//gst_element_set_state(pipeline, GST_STATE_NULL);
	//gst_object_unref(pipeline);

}
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