[iOS] Problems with mixerSuspend and mixerResume

[li_fmod]

Hi,

Thank you for sharing the detailed information and log output.

@rhdr

[LOG] SystemI::mixerResume                     : Resuming output.
[LOG] OutputCoreAudio::init                    : Hardware buffer size: 1024 samples, hardware sample rate: 48000Hz, hardware channels: 2
[LOG] OutputCoreAudio::init                    : Maximum hardware read size: 4096 samples, Software buffer size: 512 samples, Number of software buffers: 4.
[WRN] OutputCoreAudio::init                    : DSP buffer size * DSP num buffers is potentially too small.
[LOG] SystemI::startDriver                     : Output requires a sample rate of 48000Hz, resampling will occur.
[LOG] Thread::initThread                       : Init FMOD mixer thread. Affinity: 0x4000000000000001, Priority: 0xFFFF7FFA, Stack Size: 81920, Semaphore: Yes, Sleep Time: 0, Looping: Yes.

These log messages suggest that the DSP buffer size may be insufficient. Could you please try using System::setDSPBufferSize to configure the buffer size to (1024, 4) before initializing FMOD, and check if the issue persists?

Additionally, I found a related discussion that might be relevant to your case: Event callbacks don't work if other audio is playing on iOS - #4 by Leah_FMOD