fix wavhead reader; modify punc input to int32; add vad/punc/offline-stream...

lyblsgo

2023-05-08 11f0ed89afb2ec16e022cef0ce50d11c534fe028

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c    1
cc    2
ccc    3
cd    4
d    5
dc    6
dcc    7
dccc    8
cm    9