/* Stream add/delete. */
void pg_stream_del (pg_main_t * pg, uword index);
void pg_stream_add (pg_main_t * pg, pg_stream_t * s_init);
+void pg_stream_change (pg_main_t * pg, pg_stream_t * s);
/* Enable/disable stream. */
void pg_stream_enable_disable (pg_main_t * pg, pg_stream_t * s,