Hugo Lefeuvre authored Aug 10, 2018 and Adrien Béraud committed Sep 11, 2018

The audioInput class allows easy retrieval of local audio stream
without being in a running call. For now it is only used to record
audio data but might be employed for other purposes with little design
changes.

Change-Id: Icdf6a9799f341367b0c50aaff76b8642f42d0d1c