AudioTrack: add setBufferSizeInFrames()

Also add getBufferCapacityInFrames().
These can be used to dynamically raise or lower latency.

Bug: 21019153
Change-Id: I3403982894c5fe101f45d0466b00ff3036b28417
Signed-off-by: Phil Burk <philburk@google.com>
2 files changed