Merge "Add additional acquired constants"

     */

    TOO_SIMILAR = 15,

    /**

     * The magnitude of the pan angle of the user’s face with respect to the sensor’s

     * capture plane is too high.

     *

     * The pan angle is defined as the angle swept out by the user’s face turning

     * their neck left and right. The pan angle would be zero if the user faced the

     * camera directly.

     *

     * The user should be informed to look more directly at the camera.

     */

    PAN_TOO_EXTREME = 16,

    /**

     * The magnitude of the tilt angle of the user’s face with respect to the sensor’s

     * capture plane is too high.

     *

     * The tilt angle is defined as the angle swept out by the user’s face looking up

     * and down. The pan angle would be zero if the user faced the camera directly.

     *

     * The user should be informed to look more directly at the camera.

     */

    TILT_TOO_EXTREME = 17,

    /**

     * The magnitude of the roll angle of the user’s face with respect to the sensor’s

     * capture plane is too high.

     *

     * The roll angle is defined as the angle swept out by the user’s face tilting their head

     * towards their shoulders to the left and right. The pan angle would be zero if the user

     * faced the camera directly.

     *

     * The user should be informed to look more directly at the camera.

     */

    ROLL_TOO_EXTREME = 18,

   /**

     * The user’s face has been obscured by some object.

     *

     * The user should be informed to remove any objects from the line of sight from

     * the sensor to the user’s face.

     */

    FACE_OBSCURED = 19,

    /**

     * Used to enable a vendor-specific acquisition message.

     */

    VENDOR = 16

    VENDOR = 20

};

/**