ref: ec09d67a5fd82c7c2e391a7490f6271dc5570c96
parent: b0f95c47c9df38613cedd5ea00a117fb8af20339
author: xiaotiansf <xiaotianshimail@gmail.com>
date: Wed Oct 30 06:10:33 EDT 2019
add support for NAL with duplicated MBs in threaded decoding mode.