Code snippet from Lock-Free OpenSL IO module /Engine/Source/Runtime/Online/Voice/VoiceImpl/Private/Android/VoiceModuleAndroid.cpp 2017-03-07T15:34:11.9237074+09:00 Implements lock-free audio IO on Android Needed for voice chat support on Android https://audioprograming.wordpress.com/2012/10/29/lock-free-audio-io-with-opensl-es-on-android/ Licensees Git P4 /Engine/Source/ThirdParty/Licenses/opensl_io_license.txt