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)
A constantly incrementing unsigned integer, which might overflow back to 0 at some point.
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)