Duplicate mutex in Android

[graycatdeveloper]

Why do you need a copy of mutex in AudioBuffer on Android, if it is native? The call will be blocked anyway. And it's easier to make static mutex for thread safety.

[teamclouday]

Yea I see your point. It's more like a personal preference. Is there any performance related issues if I'm not making it static? I assume oboe will prevent recording start twice so there'll be only one mutex each time.