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Bug 3435

Summary: Failed to start CoreAudio on macOS 10.12
Product: SDL Reporter: Kyungdahm Yun <tomyun>
Component: audioAssignee: Ryan C. Gordon <icculus>
Status: RESOLVED FIXED QA Contact: Sam Lantinga <slouken>
Severity: critical    
Priority: P2    
Version: 1.2.15   
Hardware: x86_64   
OS: Mac OS X (All)   

Description Kyungdahm Yun 2016-09-29 02:52:20 UTC 
Some applications have errors when initializing SDL audio system (SDL_openAudio()) on the latest macOS 10.11. The error message looks like "Failed to start CoreAudio: AudioUnitSetProperty (kAudioUnitProperty_StreamFormat)". The property name may be different, i.e. kAudioUnitProperty_SetInputCallback.

I encountered this problem when running NeoPop-SDL, but it seems others also experience the same problem: https://github.com/FrozenSand/UrbanTerror4/issues/295
Comment 1 Ryan C. Gordon 2017-04-01 04:26:49 UTC 
We've replaced the macOS audio code in the latest version of SDL entirely; it uses Apple's newer AudioQueues API instead of AudioUnits now, and will probably fix this bug.

--ryan.
Comment 2 Ryan C. Gordon 2017-04-01 04:39:58 UTC 
Actually, marking this bug fixed, since the problem code is totally gone.  :)

--ryan.