Anbarasan R. focused on improving API correctness for Dolby Vision mode handling across the rdkcentral/entservices-inputoutput and rdkcentral/rdkservices repositories. He enhanced the getDolbyVisionMode API by implementing strict validation logic in C++ to ensure that Dolby Vision mode information is only returned for actual Dolby Vision content, while clear errors are raised for non-Dolby Vision scenarios. This approach eliminated the risk of exposing incorrect data, reduced downstream UI confusion, and improved the reliability of DV-related features. His work emphasized robust error handling, cross-repo consistency, and traceable commits, demonstrating strong skills in API development, debugging, and embedded systems.