tree 0e89ff4a5be97c07c81bc11c36f5e8741fca9eed
parent 28355761d73f1495bba8994dc3c0dc631ae245a8
author Jean-Michel Trivi <jmtrivi@google.com> 1566340924 -0700
committer Jean-Michel Trivi <jmtrivi@google.com> 1566860434 -0700

AudioFlinger: enforce OP_RECORD_AUDIO during recording

  Fix issue where RecordTrack silencing didn't silence the
full buffer: the memset to 0 was using the RecordThread frame
size, not the RecordTrack frame size.
  OP_RECORD_AUDIO was only enforced at the start of a recording
which would fail if not granted. This patch silences the recording
(i.e. silence is recorded instead) when it is lost, and undoes that
when granted again. This requires:
- propagating the package name of the client to the RecordTrack class
- registering an appOp callback in RecordTrack (through a new
  OpRecordAudioMonitor class) to (un)silence the recording
- update the isSilenced() method to take into account the appOp.

Bug: 138968594
Test: run app that records audio, then "adb shell appops __pack_name__ 27 2"
     and verify recording is silent after that.

Change-Id: Ib33f5b592185a67204997213bab1ac2594d90d37