DELAY             116 libavfilter/af_adelay.c DELAY(s16, int16_t, 0)
DELAY             117 libavfilter/af_adelay.c DELAY(s32, int32_t, 0)
DELAY             118 libavfilter/af_adelay.c DELAY(flt, float,   0)
DELAY             119 libavfilter/af_adelay.c DELAY(dbl, double,  0)