tree 74a0a030e078c378956b1112de39b0da915a74d3
parent 1209475a29211b3047e4cdbc7c74c15a0bffd019
author sdeng <sdeng@google.com> 1560280788 -0700
committer Sai Deng <sdeng@google.com> 1560465401 +0000

Add RD cost update helper functions

This is a preparation for adding tuning for SSIM.

Change-Id: Iac8d663123a1851589c1e84d7a76fa51a031a16a