Hi Vijay,
Interesting requirement,
You can think about media entities in OData. Check the Gateway blog on how to access a Employee Photo from backend, http://scn.sap.com/community/netweaver-gateway/blog/2013/02/22/how-to-read-photo-from-sap-system-using-sap-netweaver-gateway
What does this BAPI return?You definitely need to do some coding for this and most probably you cannot use the BAPI rightaway for mapping.
Thanks
Krishna