gstreamer: print name of all pipeline elements

gstreamer-print-elements.c

g_print("\nPrint all elements of the pipeline\n");                                                                                                                                                               

GValue item = G_VALUE_INIT;                                                                                                                                                                                      
GstIterator *iter = gst_bin_iterate_elements(GST_BIN(data.pipeline));                                                                                                                                            
GstIteratorResult res = gst_iterator_next (iter, &item);                                                                                                                                                         
                                                                                                                                                                                                                   
while (res == GST_ITERATOR_OK) {                                                                                                                                                                                 
  GstElement* element = GST_ELEMENT_CAST (g_value_get_object (&item));                                                                                                                                           
  gchar *name = gst_object_get_name(GST_OBJECT (element));                                                                                                                                                       
  g_print("\t- %s \n", name);                                                                                                                                                                                    
  res = gst_iterator_next (iter, &item);                                                                                                                                                                         
}                                                                                                                                                                                                                

g_value_unset (&item);                                                                                                                                                                                           
gst_iterator_free (iter);