Only run the wifi display RTSP server on demand, and only on the wifi direct

interface.

Change-Id: I7d3c44cb79cd40e73499f2d7ccf35c69b628e6d7
diff --git a/media/libmedia/IMediaPlayerService.cpp b/media/libmedia/IMediaPlayerService.cpp
index 41969b1..d3e2e19 100644
--- a/media/libmedia/IMediaPlayerService.cpp
+++ b/media/libmedia/IMediaPlayerService.cpp
@@ -121,10 +121,17 @@
         return interface_cast<ICrypto>(reply.readStrongBinder());
     }
 
-    virtual status_t enableRemoteDisplay(bool enable) {
+    virtual status_t enableRemoteDisplay(const char *iface) {
         Parcel data, reply;
         data.writeInterfaceToken(IMediaPlayerService::getInterfaceDescriptor());
-        data.writeInt32(enable);
+
+        if (iface != NULL) {
+            data.writeInt32(1);
+            data.writeCString(iface);
+        } else {
+            data.writeInt32(0);
+        }
+
         remote()->transact(ENABLE_REMOTE_DISPLAY, data, &reply);
         return reply.readInt32();
     }
@@ -217,8 +224,11 @@
         } break;
         case ENABLE_REMOTE_DISPLAY: {
             CHECK_INTERFACE(IMediaPlayerService, data, reply);
-            bool enable = data.readInt32();
-            reply->writeInt32(enableRemoteDisplay(enable));
+            const char *iface = NULL;
+            if (data.readInt32()) {
+                iface = data.readCString();
+            }
+            reply->writeInt32(enableRemoteDisplay(iface));
             return NO_ERROR;
         } break;
         case ADD_BATTERY_DATA: {