Currently unused -
set_device()
corresponds to
set_parameters()
with key AUDIO_PARAMETER_STREAM_ROUTING for both input and output. AUDIO_PARAMETER_STREAM_INPUT_SOURCE is an additional information used by input streams only.
Put the audio hardware input/output into standby mode. Driver should exit from standby mode at the next I/O operation. Returns 0 on success and <0 on failure.
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Last updated 2019-10-02 UTC.
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