tree 21a3acded57017b702e5a147bce19421d16a6148
parent 0d888e5216875967de29d52d1e2bb792fcc9e12b
author Cheney Ni <cheneyni@google.com> 1541551315 +0800
committer Hansong Zhang <hsz@google.com> 1549400913 +0000

Add generic audio HW module for Bluetooth audio HAL V2

This is loaded from audio HAL when initials the audio HW module,
bluetooth_audio, and uses Bluetooth audio HAL V2 to provide stream APIs
for control and data path. When the audio framework opens different
input or output streams, it uses the audio device type to choose which
SessionType is and pass to Bluetooth audio HAL so associates with the
Provider / Port pair and communicate with the Bluetooth stack.

* Audio contrl path uses IBluetoothAudioPort interface to interact with
  the Bluetooth stack.
* Audio data path uses HIDL Fast Message Queue that is maintained within
  IBluetoothAudioProvider HIDL and is ready after session started.

Bug: 111519504
Bug: 122503379
Test: manual

Change-Id: Ie668456179357c26397f5c6234ff46b5308dfe24