USED_1ABITS       768 libavcodec/dcaenc.c     int ch, band, ret = USED_26ABITS | USED_1ABITS;
USED_1ABITS       785 libavcodec/dcaenc.c                 ret &= ~USED_1ABITS;
USED_1ABITS       788 libavcodec/dcaenc.c                 ret &= ~(USED_26ABITS | USED_1ABITS);
USED_1ABITS       791 libavcodec/dcaenc.c                 ret &= ~(USED_26ABITS | USED_1ABITS);
USED_1ABITS       797 libavcodec/dcaenc.c                 ret &= ~(USED_26ABITS | USED_1ABITS);
USED_1ABITS       856 libavcodec/dcaenc.c             if (used_abits == USED_1ABITS && forbid_zero) {