MediaRouter bluetooth a2dp selection

Remove bluetooth permission check from internal AudioService method
setBluetoothA2dpOn

Manage BT A2DP state in MediaRouter. A2DP is only enabled or disabled
when either the system built-in audio route or the A2DP audio route is
selected; when selecting any other route the current state is left
alone.

Change-Id: Ib14274e206e79bd8762edca1205ecfa87b7a94cf

Author: adamp

media/java/android/media/AudioService.java

@@ -1660,9 +1660,6 @@ public boolean isBluetoothScoOn() {
 
     /** @see AudioManager#setBluetoothA2dpOn() */
     public void setBluetoothA2dpOn(boolean on) {
-        if (!checkAudioSettingsPermission("setBluetoothA2dpOn()")) {
-            return;
-        }
         setBluetoothA2dpOnInt(on);
     }
 

media/java/android/media/MediaRouter.java

@@ -81,9 +81,8 @@ public void dispatchAudioRoutesChanged(final AudioRoutesInfo newRoutes) {
             IBinder b = ServiceManager.getService(Context.AUDIO_SERVICE);
             mAudioService = IAudioService.Stub.asInterface(b);
 
-            // XXX this doesn't deal with locale changes!
-            mSystemCategory = new RouteCategory(mResources.getText(
-                    com.android.internal.R.string.default_audio_route_category_name),
+            mSystemCategory = new RouteCategory(
+                    com.android.internal.R.string.default_audio_route_category_name,
                     ROUTE_TYPE_LIVE_AUDIO, false);
         }
 
@@ -130,6 +129,13 @@ void updateRoutes(AudioRoutesInfo newRoutes) {
                         info.mSupportedTypes = ROUTE_TYPE_LIVE_AUDIO;
                         sStatic.mBluetoothA2dpRoute = info;
                         addRoute(sStatic.mBluetoothA2dpRoute);
+                        try {
+                            if (mAudioService.isBluetoothA2dpOn()) {
+                                selectRouteStatic(ROUTE_TYPE_LIVE_AUDIO, mBluetoothA2dpRoute);
+                            }
+                        } catch (RemoteException e) {
+                            Log.e(TAG, "Error selecting Bluetooth A2DP route", e);
+                        }
                     } else {
                         sStatic.mBluetoothA2dpRoute.mName = mCurRoutesInfo.mBluetoothName;
                         dispatchRouteChanged(sStatic.mBluetoothA2dpRoute);
@@ -279,6 +285,16 @@ static void selectRouteStatic(int types, RouteInfo route) {
             return;
         }
 
+        final RouteInfo btRoute = sStatic.mBluetoothA2dpRoute;
+        if (btRoute != null && (types & ROUTE_TYPE_LIVE_AUDIO) != 0 &&
+                (route == btRoute || route == sStatic.mDefaultAudio)) {
+            try {
+                sStatic.mAudioService.setBluetoothA2dpOn(route == btRoute);
+            } catch (RemoteException e) {
+                Log.e(TAG, "Error changing Bluetooth A2DP state", e);
+            }
+        }
+
         if (sStatic.mSelectedRoute != null) {
             // TODO filter types properly
             dispatchRouteUnselected(types & sStatic.mSelectedRoute.getSupportedTypes(),