free_stream_filter 1127 convert.c      	free_stream_filter(cas->one);
free_stream_filter 1128 convert.c      	free_stream_filter(cas->two);
free_stream_filter   62 convert.h      extern void free_stream_filter(struct stream_filter *);
free_stream_filter  188 streaming.c    	free_stream_filter(st->u.filtered.filter);
free_stream_filter  512 streaming.c    			free_stream_filter(filter);