SWR_FILTER_TYPE_BLACKMAN_NUTTALL 121 libswresample/options.c { "blackman_nuttall", "select Blackman Nuttall windowed sinc", 0 , AV_OPT_TYPE_CONST, { .i64 = SWR_FILTER_TYPE_BLACKMAN_NUTTALL }, INT_MIN, INT_MAX, PARAM, "filter_type" }, SWR_FILTER_TYPE_BLACKMAN_NUTTALL 184 libswresample/resample.c case SWR_FILTER_TYPE_BLACKMAN_NUTTALL: