kAudioHardwareServiceDeviceProperty_VirtualMainVolume ANR

Question

Created Jan ’22

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Participants 1

Using

let address = AudioObjectPropertyAddress(
   mSelector:kAudioHardwareServiceDeviceProperty_VirtualMainVolume,
   mScope: kAudioObjectPropertyScopeOutput,
   mElement: kAudioObjectPropertyElementMaster
  )

Using Xcode13.1, App freezes.

Tips: Using Xcode12, mSelector using kAudioHardwareServiceDeviceProperty_VirtualMasterVolume is worked.

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Answer 1

miniLV OP

Jan ’22

ANR stack:

main thread is 259
Call Backtrace of 25/32 threads:
Backtrace of Thread 259:
libsystem_kernel_dylib     0x1ae629954 mach_msg_trap + 8
libsystem_kernel_dylib     0x1ae629d00 mach_msg + 76
0x0000000000000000   ***
...
MyApp        0x102892d20 $18setDefaultD12OutputVolumeySbSfF + 380

So this issue related Xcode13? And what's the different between kAudioHardwareServiceDeviceProperty_VirtualMainVolume and kAudioHardwareServiceDeviceProperty_VirtualMasterVolume?

0