commit ce685406448709895391dcc83a75fa165a72174e
author Andy Hung <hunga@google.com> Fri Oct 05 17:23:27 2018 -0700
committer Andy Hung <hunga@google.com> Mon Oct 15 18:53:25 2018 -0700
tree a4a1490819ffce35bd113ca96b905ff83de168e0
parent b5be68edecd62d8edbf86fd4858d1ceb81a74b6c

AudioRecord: Clean up state handling

Handle spurious wakeups in stop.
Handle track invalidation.
Clarify state.

Note: start and stop should not be called simultaneously from different
binder threads.

Test: audio sanity
Bug: 117303225
Change-Id: I587d9cda7b0eac5215eb6a88f93ee08e396e3ef9

services/audioflinger/TrackBase.h

diff --git a/services/audioflinger/TrackBase.h b/services/audioflinger/TrackBase.h
index 92e79f2..c94639b 100644
--- a/services/audioflinger/TrackBase.h
+++ b/services/audioflinger/TrackBase.h
@@ -25,13 +25,13 @@
 public:
     enum track_state {
         IDLE,
-        FLUSHED,
+        FLUSHED,        // for PlaybackTracks only
         STOPPED,
         // next 2 states are currently used for fast tracks
         // and offloaded tracks only
         STOPPING_1,     // waiting for first underrun
         STOPPING_2,     // waiting for presentation complete
-        RESUMING,
+        RESUMING,       // for PlaybackTracks only
         ACTIVE,
         PAUSING,
         PAUSED,