Hi, I’m am using the newly released Unity FMOD integration (1.08.00), and I am trying to replicate the callback for getting Markers and beats from an event instance, as shown in the documentation below.

This works fine in the editor and on android, however on iOS, I am getting Just In Time errors when I try to set the callback. Unfortunately the problem seems to be in your dll. Do you know of any work around?

ExecutionEngineException: Attempting to JIT compile method ‘(wrapper
native-to-managed) MainTrackController:BeatEventCallback
(FMOD.Studio.EVENT_CALLBACK_TYPE,intptr,intptr)’ while running with

at (wrapper managed-to-native)
at FMOD.Studio.EventInstance.setCallback (FMOD.Studio.EVENT_CALLBACK
callback, EVENT_CALLBACK_TYPE callbackmask) [0x00000] in :0 at MainTrackController.Play () [0x00000] in :0 at GarageGameController.Begin () [0x00000] in :0

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Best Answer

Use IL2CPP for your iOS builds instead of Mono (done on the the Unity Player Settings).

You can’t submit Mono builds to the store anyway because it doesn’t support 64bit apps.

  • Nicholas Wilcox

    You need to add [MonoPInvokeCallback] above your method. It shouldn’t require any changes to our plugin.

  • Jim Waterwash

    MonoPInvokeCallback needs a type specified, at least it does for me.. using AOT; What should be used?

  • Andrew Oaten

    I have the same issue still. A type needs to be specified.
    Could you provide an example piece of code?

  • Nicholas Wilcox

    [MonoPInvokeCallback (typeof (FMOD.Studio.EVENT_CALLBACK))]

  • Stephen Gray

    Side note: this solution also works for getting the FMOD callbacks working on PS4.

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