When mediaServicesWereReset occurs, a crash happens with AVCaptureSession during startRunning.

[levs42]

Describe the bug

We have a popular crash that looks like this:

*** -[AVCaptureSession startRunning] startRunning may not be called between calls to beginConfiguration and commitConfiguration

Stack trace:

HaishinKit IOCaptureSession.startRunningIfNeeded (IOCaptureSession.swift:182)
HaishinKit IOCaptureSession.sessionRuntimeError (IOCaptureSession.swift:243)
...
App main (AppDelegate.swift:9)

From my understanding this happens because there is a race condition between startRunningIfNeeded and configuration or sessionPreset in IOCaptureSession. There was a fix #1239 for the similar issue before. Maybe wrapping beginConfiguration into a serial queue would solve the problem entirely?

To Reproduce

.mediaServicesWereReset notification is very rare so I don't have exact steps to reproduce it. I saw some people suggest:

Now I'm finally able to reproduce the problem by simply repeating the normal operations of the app thousands of times in an automatic test

Expected behavior

No crash

Version

1.8.1

Smartphone info.

No response

Additional context

No response

Screenshots

No response

Relevant log output

No response

[shogo4405]

Is the focus of this issue on the rare case when the event mediaServicesWereReset occurs?

[levs42]

Yes, that's the case

[shogo4405]

Close as fixed #1526