# Crash on OSX when using programmer sound

**URL:** <https://qa.fmod.com/t/crash-on-osx-when-using-programmer-sound/15192>\
**Category:** Unity\
**Created:** [November 7, 2019, 6:35am UTC](https://qa.fmod.com/t/crash-on-osx-when-using-programmer-sound/15192 "2019-11-07T06:35:00Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![fluffben](https://avatars.discourse-cdn.com/v4/letter/f/ecccb3/32.png) [@fluffben](https://qa.fmod.com/u/fluffben)\
**Post date:** [November 7, 2019, 6:35am UTC](https://qa.fmod.com/t/crash-on-osx-when-using-programmer-sound/15192/1 "2019-11-07T06:35:00Z")

</div>

Hi all!

We’re using Unity 2019.2.11 and FMOD 2.00.01 and we’re seeing a crash on OSX when trying to play a programmer sound. Here is the stacktrace:

> ```
> <i>OSXPlayer(ANZC02SC05QGQ17)</i> StackOverflowException: The requested operation caused a stack overflow.
> at (wrapper managed-to-native) FMOD.Studio.EventInstance.FMOD_Studio_EventInstance_GetUserData(intptr,intptr&)
> at FMOD.Studio.EventInstance.getUserData (System.IntPtr& userdata) [0x00001] in /Users/soap.build1/Desktop/NWH_macOS/Assets/Plugins/FMOD/src/Runtime/wrapper/fmod_studio.cs:1255 
> at AudioManager.ProgrammerSoundEventCallback (FMOD.Studio.EVENT_CALLBACK_TYPE eventCbType, FMOD.Studio.EventInstance ev, System.IntPtr parameterPtr) [0x00001] in /Users/soap.build1/Desktop/NWH_macOS/Assets/Classes/gameClasses/audio/AudioManager.cs:336 
> at (wrapper native-to-managed) AudioManager.ProgrammerSoundEventCallback(FMOD.Studio.EVENT_CALLBACK_TYPE,FMOD.Studio.EventInstance,intptr)
> UnityEngine.DebugLogHandler:Internal_LogException(Exception, Object)
> UnityEngine.DebugLogHandler:LogException(Exception, Object)
> UnityEngine.Logger:LogException(Exception, Object)
> UnityEngine.Debug:LogException(Exception)
> UnityEngine.UnhandledExceptionHandler:<RegisterUECatcher>m__0(Object, UnhandledExceptionEventArgs) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/UnhandledExceptionHandler.bindings.cs:46)
> FMOD.Studio.EventInstance:FMOD_Studio_EventInstance_GetUserData(IntPtr, IntPtr&)
> FMOD.Studio.EventInstance:getUserData(IntPtr&) (at /Users/soap.build1/Desktop/NWH_macOS/Assets/Plugins/FMOD/src/Runtime/wrapper/fmod_studio.cs:1255)
> AudioManager:ProgrammerSoundEventCallback(EVENT_CALLBACK_TYPE, EventInstance, IntPtr) (at /Users/soap.build1/Desktop/NWH_macOS/Assets/Classes/gameClasses/audio/AudioManager.cs:336)
>  
> (Filename: /Users/soap.build1/Desktop/NWH_macOS/Assets/Plugins/FMOD/src/Runtime/wrapper/fmod_studio.cs Line: 1255)
> 
> ```

We’ve just taken the example from the FMOD’s website to play programmer sounds and removed what seemed unnecessary. It works fine on IOS or TVOS but will crash on MacOSX. Here is the code

> ```
> public static EventInstance PlayProgrammerSound(string key, bool radioFilter)
> {
> EventInstance ev = new EventInstance();
> try
> {
> string audioEventID = radioFilter ? AudioDB.VO_Dialogue_RADIO : AudioDB.VO_Dialogue;
> ev = RuntimeManager.CreateInstance(audioEventID);
> ev.set3DAttributes(RuntimeUtils.To3DAttributes(Vector3.zero));
>         
> if (!voiceOverEnabled)
> {
> return ev;
> }
> 
> GCHandle stringHandle = GCHandle.Alloc(key, GCHandleType.Pinned);
> ev.setUserData(GCHandle.ToIntPtr(stringHandle));
> 
> ev.setCallback(programmerSoundCallback);
> ev.start();
> ev.release();
> 
> }
> catch (EventNotFoundException)
> {
> ev.setPaused(true);
> return ev;
> }
> 
> return ev;
> }
> 
> ```

> ```
> static GCHandle stringHandle;
> // Cleaned up from FMOD website
> [AOT.MonoPInvokeCallback(typeof(EVENT_CALLBACK))]
> static RESULT ProgrammerSoundEventCallback(EVENT_CALLBACK_TYPE eventCbType, EventInstance ev, IntPtr parameterPtr)
> {
> ev.getUserData(out IntPtr stringPtr);
> 
> stringHandle = GCHandle.FromIntPtr(stringPtr);
> string key = stringHandle.Target as string;
> 
> if (eventCbType == EVENT_CALLBACK_TYPE.CREATE_PROGRAMMER_SOUND)
> {
> MODE soundMode = MODE.LOOP_NORMAL | MODE.CREATECOMPRESSEDSAMPLE | MODE.NONBLOCKING;
> PROGRAMMER_SOUND_PROPERTIES parameter = (PROGRAMMER_SOUND_PROPERTIES) Marshal.PtrToStructure(parameterPtr, typeof(PROGRAMMER_SOUND_PROPERTIES));
> 
> RESULT keyResult = RuntimeManager.StudioSystem.getSoundInfo(key, out SOUND_INFO dialogueSoundInfo);
> if (keyResult != RESULT.OK)
> {
> return keyResult;
> }
> 
> RESULT soundResult = RuntimeManager.CoreSystem.createSound(dialogueSoundInfo.name_or_data, soundMode | dialogueSoundInfo.mode, ref dialogueSoundInfo.exinfo, out Sound dialogueSound);
> if (soundResult == RESULT.OK)
> {
> parameter.sound = dialogueSound.handle;
> parameter.subsoundIndex = dialogueSoundInfo.subsoundindex;
> Marshal.StructureToPtr(parameter, parameterPtr, false);
> }
> }
> else if (eventCbType == EVENT_CALLBACK_TYPE.DESTROY_PROGRAMMER_SOUND)
> {
> PROGRAMMER_SOUND_PROPERTIES parameter = (PROGRAMMER_SOUND_PROPERTIES)Marshal.PtrToStructure(parameterPtr, typeof(PROGRAMMER_SOUND_PROPERTIES));
> Sound sound = new Sound { handle = parameter.sound };
> sound.release();
> }
> else if (eventCbType == EVENT_CALLBACK_TYPE.DESTROYED)
> {
> stringHandle.Free();
> }
> 
> return RESULT.OK;
> }
> 
> ```

The stacktrace indicates it’s crashing on _ev.getUserData(out IntPtr stringPtr);_ in ProgrammerSoundEventCallback. the issue we’re having seems a bit similar to [Supersonic C# Wrapper (DSP callback problem)](https://qa.fmod.com/t/supersonic-c-wrapper-dsp-callback-problem/12497) but we’re not sure to understand what needs to be done. Any help will be much appreciated! Thanks!

---

<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [November 12, 2019, 3:14am UTC](https://qa.fmod.com/t/crash-on-osx-when-using-programmer-sound/15192/2 "2019-11-12T03:14:42Z")

</div>

Are you able to update the FMOD version at all? There was a fix put out in 2.00.03 that fixed an issue with callbacks on Mac.

---

<div class="post-metadata">

**Author:** ![fluffben](https://avatars.discourse-cdn.com/v4/letter/f/ecccb3/32.png) [@fluffben](https://qa.fmod.com/u/fluffben)\
**Post date:** [November 13, 2019, 12:53am UTC](https://qa.fmod.com/t/crash-on-osx-when-using-programmer-sound/15192/3 "2019-11-13T00:53:02Z")

</div>

Thanks for getting back to me.  
We’re now hit with that issue: [Linker error with FMOD Studio Unity iOS fmodstudio11009\_v2\_patch2](https://qa.fmod.com/t/linker-error-with-fmod-studio-unity-ios-fmodstudio11009-v2-patch2/14197)

We then changed the wrapper to that. Is there any value you’d advise for exclusive and inclusive?

> ```
> public RESULT getCPUUsage(out uint exclusive, out uint inclusive)
> {
> //return FMOD_Studio_Bus_GetCPUUsage(this.handle, out exclusive, out inclusive);
> exclusive = 1;
> inclusive = 1;
> return RESULT.OK;
> }
> 
> ```

---

<div class="post-metadata">

**Author:** ![cameron-fmod](https://yyz2.discourse-cdn.com/flex036/user_avatar/qa.fmod.com/cameron-fmod/32/261_2.png) [@cameron-fmod](https://qa.fmod.com/u/cameron-fmod)\
**Post date:** [November 13, 2019, 2:33am UTC](https://qa.fmod.com/t/crash-on-osx-when-using-programmer-sound/15192/4 "2019-11-13T02:33:17Z")

</div>

That is an old issue that was resolved before 2.0 was released, there is a similar one with a couple of new getCPUUsage functions:

> [@Build failed Unity 2019.2.8 on Switch, FMOD 2.00.05 (with workaround)](https://qa.fmod.com/t/build-failed-unity-2019-2-8-on-switch-fmod-2-00-05-with-workaround/15126):
>
> Hi, I couldn’t build on Nintendo Switch with Unity 2019.2.8 & latest FMOD 2.00.05 (installed from the unity package) The error is 2 functions not found at link time during the IL2CPP compilation. I had to comment those functions in fmod\_studio.cs: FMOD\_Studio\_Bus\_GetCPUUsage and FMOD\_Studio\_EventInstance\_GetCPUUsage. I deleted+re-unpackaged everything from the plugin, deleted caches (/library, IL2CPP cache etc) but still had the error. Only commenting those functions in the code worked. Extr…