ZERO_BT          1403 libavcodec/aacdec.c             if (band_type[idx] == ZERO_BT) {
ZERO_BT          2173 libavcodec/aacdec.c                     if (sce->band_type[idx] != ZERO_BT) {
ZERO_BT          2672 libavcodec/aacdec.c             if (cce->ch[0].band_type[idx] != ZERO_BT) {