MirrorType

自动，前置摄像头镜像，后置摄像头不镜像。

前后摄像头均镜像。

前后摄像头均不镜像。

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Returns an array containing the constants of this enum type, in the order they're declared.