Misc cleanups and enhancements on loop restoration
Includes: Some cleanups/refactoring Better buffer management. Some preps for future chrominance restoration. Change-Id: Ia264b8989b5f4a53c0764ed3e8258ddc212723fc
Includes: Some cleanups/refactoring Better buffer management. Some preps for future chrominance restoration. Change-Id: Ia264b8989b5f4a53c0764ed3e8258ddc212723fc