ZERO_BT           677 libavcodec/aac.c             if (band_type[idx] == ZERO_BT) {
ZERO_BT           828 libavcodec/aac.c             if (cur_band_type == ZERO_BT || cur_band_type == INTENSITY_BT2 || cur_band_type == INTENSITY_BT) {
ZERO_BT          1230 libavcodec/aac.c                     if (sce->band_type[idx] != ZERO_BT) {
ZERO_BT          1495 libavcodec/aac.c             if (cce->ch[0].band_type[idx] != ZERO_BT) {