MYSQL query with if-else statement

Hi I have below table structure shown in image

I am trying to write query in mysql to fetch

name,address,mono from customer table or vendortable depend on whoseid value from transportsticker table

I tried as

 SELECT transportsticker.* ,AA.name,AA.address,AA.mono FROM transportsticker INNER JOIN (case when (transportsticker.whoseid='vendor') then (vendortable) else (customertable) end) AA   ON AA.id=transportsticker.vorcid AND transportsticker.id=1

But it is giving syntax error. can anybody help me...?