The VTS test for volume accessors first determines whether
the accessor is supported by calling the getter. The getter
must return `UNSUPPORTED_OPERATION` if the control is not
supported. For this reason, wire the getter to the hardware
mixer implementation.
Bug: 302132812
Test: atest VtsHalAudioCoreTargetTest
Change-Id: Ia50def0d076b6d3c46db55123186eab34bbbb954
Remove alsa::MixerControl. tinyALSA contains utility
functions for setting values in percents, they use
the same logic as used to be there for handling
the "volume" control. Use access serialization at
the mixer level, rather than for each control.
Move the call to 'mixer_open' to alsa::Mixer.
Add controls for capture (mic) mute and gain. They
will be used by the primary HAL.
Bug: 264712385
Test: atest VtsHalAudioCoreTargetTest
Change-Id: I0fad994153de96aceec3eb8f2fec19805ec912f8
Extract code interacting with tinyALSA which is not
specific to USB into "abstract" module and stream
implementations ModuleAlsa and StreamAlsa. Also, move
utility code which does not need module or stream
context into Utils.
This facilitates implementation of the CF core HAL which
also uses tinyALSA, allowing to share common code.
Bug: 264712385
Test: atest VtsHalAudioCoreTargetTest
Change-Id: I2134b15e970c78e8a48b254e15199b8207a8ab34
