WFUNC_HAMMING      88 libavfilter/avf_showspectrum.c         { "hamming",  "Hamming window",  0, AV_OPT_TYPE_CONST, {.i64 = WFUNC_HAMMING},  0, 0, FLAGS, "win_func" },
WFUNC_HAMMING     225 libavfilter/avf_showspectrum.c         case WFUNC_HAMMING: