Fix AudioEngine to allow re-initialization - DO NOT MERGE

Add AudioEngine::CompareAndSetEngine and change
VariableSpeed::initializeEngine to use this method so it only initializes
a new engine once rather than asserting on subsequent calls.

Change AudioEngine::DeleteEngine so it ignores repeated calls instead of
asserting. Add VariableSpeed::isReadyToPlay so callers can detect when
the audio library has been properly initialized.

Bug:11511992
Change-Id: I4517cb2ab4c186da43dffc7dbc2a9ad49000059f
(cherry picked from commit 8502b724a9fdc104e7b4a3aba1641e101b4c7be9)

1 files changed, 5 insertions, 0 deletions

diff --git a/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java b/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java
index 17692f7..c9a9741 100644
--- a/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java
+++ b/variablespeed/src/com/android/ex/variablespeed/SingleThreadedMediaPlayerProxy.java
@@ -85,6 +85,11 @@ public class SingleThreadedMediaPlayerProxy implements MediaPlayerProxy {
     }
 
     @Override
+    public synchronized boolean isReadyToPlay() {
+        return mDelegate.isReadyToPlay();
+    }
+
+    @Override
     public synchronized boolean isPlaying() {
         return mDelegate.isPlaying();
     }