ref: a1daf009be1814b62cd9535caa612bdd4d943773
parent: 00bbe342c21a1171e8c12da8c92039406285b91d
parent: e3f0b19f3f12f5a46d485ea4b767fd2885e72012
author: Jingning Han <jingning@google.com>
date: Thu Jan 8 08:58:35 EST 2015
Merge "Use lookup table to find pixel numbers in block"