return null for 2pass other wav_format

雾聪

2023-08-29 3a32a6e878b393a4b2029ae9cff24adda38011e4

1
2
3
4
5
6
7
8
9
X    1
XX    2
XXX    3
XL    4
L    5
LX    6
LXX    7
LXXX    8
XC    9