MEASURE_ZERO_CROSSINGS  134 libavfilter/af_astats.c       { "Zero_crossings"            , "", 0, AV_OPT_TYPE_CONST, {.i64=MEASURE_ZERO_CROSSINGS      }, 0, 0, FLAGS, "measure" },
MEASURE_ZERO_CROSSINGS  499 libavfilter/af_astats.c         if (s->measure_perchannel & MEASURE_ZERO_CROSSINGS)
MEASURE_ZERO_CROSSINGS  748 libavfilter/af_astats.c         if (s->measure_perchannel & MEASURE_ZERO_CROSSINGS)