struct btr_node *btrn = fn->btrn;
size_t iqs = btr_get_input_queue_size(btrn);
int ret;
char *header, *buf;
int32_t rate, ch;
struct btr_node *btrn = fn->btrn;
size_t iqs = btr_get_input_queue_size(btrn);
int ret;
char *header, *buf;
int32_t rate, ch;