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Reply to AUGraph.start crashes on iOS 14 Beta
We’re seeing the exact same issue, minus the logs from augraph and aurioc: HALB_IOBufferManager_Client::GetIOBuffer: the stream index is out of range HALB_IOBufferManager_Client::GetIOBuffer: the stream index is out of range HALB_IOBufferManager_Client::GetIOBuffer: the stream index is out of range [aqme] 255: AQDefaultDevice (1): output stream 0: null buffer [aqme] 1778: EXCEPTION thrown (-50): error != 0 Start: Mach message timeout. Apparently deadlocked. Aborting now. CoreSimulator 725.10.3 - Device: iPad Pro (12.9-inch) (4th generation) - Runtime: iOS 14.0 (18A5301v) - DeviceType: iPad Pro (12.9-inch) (4th generation)
Jun ’20
Reply to AUGraph.start crashes on iOS 14 Beta
Submitted FB7761200: Initializing audio I/O using Xcode 12.0 beta (12A6159) on the iOS Simulator results the app crashing with the following console logs: HALBIOBufferManagerClient::GetIOBuffer: the stream index is out of range HALBIOBufferManagerClient::GetIOBuffer: the stream index is out of range [aqme] 255: AQDefaultDevice (1): output stream 0: null buffer [aqme] 1778: EXCEPTION thrown (-50): error != 0 Initialize: Mach message timeout. Apparently deadlocked. Aborting now. This can be easily reproduced e.g. with the "AUV3Filter iOS" app that is part of this sample project: https://developer.apple.com/documentation/audiotoolbox/audio_unit_v3_plug-ins/creating_custom_audio_effects Steps to reproduce: Launch app Expected results: App launches Actual results: App crashes in AURemoteIO::Initialize() Backtrace: thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGABRT 		frame #0: 0x000000010515f33a libsystem_kernel.dylib`__pthread_kill + 10 		frame #1: 0x00000001051bce60 libsystem_pthread.dylib`pthread_kill + 430 		frame #2: 0x0000000104eb7c24 libsystem_c.dylib`abort + 120 		frame #3: 0x00000001087655c9 AudioToolboxCore`_ReportRPCTimeout(char const*, int) + 90 		frame #4: 0x0000000126a08bd9 libEmbeddedSystemAUs.dylib`_CheckRPCError(char const*, int, int) + 92 		frame #5: 0x0000000126a054e0 libEmbeddedSystemAUs.dylib`AURemoteIO::Initialize() + 1878 		frame #6: 0x0000000126a1eec6 libEmbeddedSystemAUs.dylib`AUBase::DoInitialize() + 36 		frame #7: 0x00000001269a547f libEmbeddedSystemAUs.dylib`AUMethodInitialize(void*) + 59 		frame #8: 0x000000010885a1bb AudioToolboxCore`-[AUAudioUnitV2Bridge allocateRenderResourcesAndReturnError:] + 77 		frame #9: 0x00000001064c5dbf AVFAudio`AUInterfaceBaseV3::Initialize() + 45 		frame #10: 0x0000000106469ef9 AVFAudio`AUGraphNodeBase::Initialize() + 29 		frame #11: 0x00000001064478a1 AVFAudio`AVAudioEngineGraph::PerformCommand(AUGraphNodeBaseV3&, AVAudioEngineGraph::ENodeCommand, void*, unsigned int) const + 365 		frame #12: 0x000000010644f63e AVFAudio`AVAudioEngineGraph::Initialize(NSError) + 1642 		frame #13: 0x00000001064c422f AVFAudio`AVAudioEngineImpl::Initialize(NSError) + 201 		frame #14: 0x00000001064bf36e AVFAudio`-[AVAudioEngine prepare] + 66 	* frame #15: 0x0000000101582aaf AUv3FilterFramework`SimplePlayEngine.init(self=0x0000600002a540c0) at SimplePlayEngine.swift:59:16 ...
Jun ’20