ref: 4ac70bd7d3378d5caa3a610c9c2dcda65fcfe026
parent: 39a90bc8e879738c336304960dfcee6a17fee057
author: Dmitry Kovalev <dkovalev@google.com>
date: Mon May 20 11:59:39 EDT 2013
Adding get_ref_frame_idx function. Change-Id: I4f1a4eca6794cda78d00512196caacd5567e2dcc