To support multi-instance in multi-thread environment.
Released under the BSD 2-Clause License
Most of source codes are under the following ITU notice:
ITU-T G.729 Software Package Release 2 (November 2006)
ITU-T G.729A Speech Coder ANSI-C Source Code Version 1.1 Last modified: September 1996
Copyright (c) 1996, AT&T, France Telecom, NTT, Universite de Sherbrooke All rights reserved.