tree 88252c8d16ae5a70ff11ad490a8cdefafc2badc7
parent 8bd1395881446e807924d6f320966d7c26d3d527
author Svet Ganov <svetoslavganov@google.com> 1516140318 -0800
committer Svet Ganov <svetoslavganov@google.com> 1516263693 -0800

Don't record audio if UID is idle - framework

To protect user's privacy if a UID is in an idle state we allow
recording but report silence (all zeros in the byte array) and once
the process goes in an active state we report the real mic data.
This avoids the race between the app being notified aboout its
lifecycle and the audio system being notified about the state
of a UID.

Test: Added - AudioRecordTest#testRecordNoDataForIdleUids
      Passing - cts-tradefed run cts-dev -m CtsMediaTestCases
             -t android.media.cts.AudioRecordTest

bug:63938985

Change-Id: I8b0a0889c4aee07f4e1d3c7e4cee0821f2f8cd91