if (mRendererCallbacksWeakReference != null && mRendererCallbacksWeakReference.get() != null) { mRendererCallbacksWeakReference.get().onSurfaceDestroyed();
if (mRendererCallbacksWeakReference != null && mRendererCallbacksWeakReference.get() != null) { mRendererCallbacksWeakReference.get().onSurfaceDestroyed();