tree 48a23cdf0dcc1e554e75c2fe35f8140d2b6d54d8
parent 1b08a4a8a3271f04b98c34747fe077610b7ee534
author Jean-Michel Trivi <jmtrivi@google.com> 1503191286 -0700
committer Jean-Michel Trivi <jmtrivi@google.com> 1503590720 -0700

Audio event logging

New class AudioEventLogger to store a configurable number of the
  last audio events. It hosts a circular buffer of lightweight
  event objects, an abstract class whose implementations are
  event-specific, and does the heavier string manipulations
  at the time of the dump, not during normal operation.
Add logging for:
  - phone state (a.k.a. audio mode) changes
  - wired device connections
  - playback activity monitor
  - force use

Test: adb shell dumpsys audio
Bug: 64470715
Change-Id: I8dbd936e2ffec39134f1a8837191c74f5cb9fc56