hal layer summary

1 Once there is no stream recording or playback, mOutputDevices mInputDevice is set to 0, and the input and output devices are turned off.
2 The mic analog gain step is 6, if the gain is adjusted to 7, the analog gain is 5 divisions and the digital gain is 1

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Origin blog.csdn.net/aningxiaoxixi/article/details/114377214