message = gst_bus_poll (bus, GST_MESSAGE_ANY,-1); g_assert (message !=NULL);switch(message->type) {caseGST_MESSAGE_EOS:gst_message_unref(message);return;caseGST_MESSAGE_WARNING:caseGST_MESSAGE_ERROR:{ GError *gerror; gchar *debug; gst_message_parse_error (message, &gerror, &debug)...