Use AudioTrack::event_type not int in callback

Change-Id: Ifefc708d46874e04fd0d01cb6e2d43b987ee796c
diff --git a/media/libmediaplayerservice/MediaPlayerService.cpp b/media/libmediaplayerservice/MediaPlayerService.cpp
index eae93ff..0676fcd 100644
--- a/media/libmediaplayerservice/MediaPlayerService.cpp
+++ b/media/libmediaplayerservice/MediaPlayerService.cpp
@@ -1454,7 +1454,7 @@
 
 // static
 void MediaPlayerService::AudioOutput::CallbackWrapper(
-        int event, void *cookie, void *info) {
+        AudioTrack::event_type event, void *cookie, void *info) {
     //LOGV("callbackwrapper");
     if (event != AudioTrack::EVENT_MORE_DATA) {
         return;
diff --git a/media/libmediaplayerservice/MediaPlayerService.h b/media/libmediaplayerservice/MediaPlayerService.h
index 8bab471..573117c 100644
--- a/media/libmediaplayerservice/MediaPlayerService.h
+++ b/media/libmediaplayerservice/MediaPlayerService.h
@@ -103,7 +103,7 @@
     private:
         static void             setMinBufferCount();
         static void             CallbackWrapper(
-                int event, void *me, void *info);
+                AudioTrack::event_type event, void *me, void *info);
 
         AudioTrack*             mTrack;
         AudioCallback           mCallback;