AudioTrack and AudioRecord: getNotificationPeriodInFrames()

This is needed for AAudioStream_getFramesPerBurst(),
which is needed for callbacks to work correctly.

Bug: 34716038
Bug: 36489240
Test: CTS test_aaudio.cpp
Change-Id: I0e3f3f18a22bf6da8c288f0d2caec0bff0153f2f
Signed-off-by: Phil Burk <philburk@google.com>
4 files changed