Hi,

I am using the alsa driver on the arm linux platform, when the system are
decoding or encoding video with ffmpeg(using vpu driver), the data of sound
which are read from alsa driver may be randomly incorrect, almost all the
wrong data are 0xffff or 0x81C0. It is a independent thread to read the
sound data.

Any suggestions would be appreciated.

BR,
JunLiu
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