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