group_id_next
Description:
Return a constantly incrementing group id.
This function is used to generate a new group-id for the stream-start event.
This function never returns gst_group_id_invalid (which is 0)
Returns:
| A constantly incrementing unsigned integer, which might overflow back to 0 at some point. | 
Namespace: Gst.Util
  
  Package: gstreamer-1.0