I’m writing a system to forward all of the audio coming out of FMOD to FFMPEG, for video recording. Right now I have achieved this with a custom DSP attached to the tail of the master channel group. Functionally, everything works, except that after this DSP is added, at the end of gameplay I get a s…

I haven’t been able to reproduce the problem you are describing. Could you provide a simple Unity project that demonstrates it happening?

Was this issue fixed? I have literally the exact same bug as described by OP – a custom C# DSP on the master group causes a pop when the studio system shuts down and a buffer starvation warning (which subsequently causes Unity to freeze upon play again). I hope there’s an easy resolution to this bu…

Unfortunately I have not yet solved it. It isn’t a blocking issue for us, and our project is rather challenging to distill down into a simple project to send to Matthew. Maybe your project is smaller?

If anyone is able to provide a simple demo that shows this happening it will go a long way towards us being able to solve it.

So I made a simple demo that uses the same code that breaks my main project but the bug actually does not happen. I would guess this is because my main project has much more complex behavior overall and uses more CPU to start and stop a scene, and as far as I can tell the bug happens because FMOD ge…

Do you have the problem if you run your game as a standalone build using IL2CPP?

When building a standalone to OSX using IL2CPP I get the following error: NotSupportedException: IL2CPP does not support marshaling delegates that point to instance methods to native code. The method we're attempting to marshal is: FMOD_CustomDSP::ReadAudioData > FMOD.System.FMOD5_System_RegisterDS…

Even with your project I am unable to reproduce the small buffer size == hang scenario. I can see you are hand coding the buffer size to 256 x 4, this works fine in my tests, going lower seems okay too. Additionally building standalone windows with your project produces no errors when switched to I…

Interesting – setting the buffer size to 128 x 4 causes a hang on the consequent editor Play every time I test it. I just tested this in my test project and it reproduces consistently for me. Unfortunately I only have a Mac testing environment right now so I am not sure if it reproduces to Windows.…

Testing on Mac I can see setting the buffer to 128x4 isn’t workable. You should be seeing lots of warnings in the Unity console explaining what’s going on. For my Mac at least, a minimum of 1024 samples is required to service the operating system requests. 256x4 works, just, 128x4 gives a warning sa…

Adding DSP Causes WASAPI Starvation

FMOD Engine

mathew October 11, 2024, 4:21am 25

For anyone following this response follow through to Adding signal DSP causes starvation - Unity - FMOD Forums

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Adding DSP Causes WASAPI Starvation

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