This is a method which can be optionally implemented
by a stream in case it can provide more exact position,
for example by taking into account data in intermediate
buffers.
Implemented this method for StreamAlsa and StreamRemoteSubmix.
Bug: 264712385
Test: atest VtsHalAudioCoreTargetTest
Change-Id: I392933f8f6b22d784726925199db00dcb0313648
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
