Objective-C

NS_INLINE NSString *MPPRunningModeDisplayName(MPPRunningMode runningMode) {
  switch (runningMode) {
    case MPPRunningModeImage:
      return @"Image";
    case MPPRunningModeVideo:
      return @"Video";
    case MPPRunningModeLiveStream:
      return @"Live Stream";
    default:
      return nil;
  }
}