Sometimes it's trial and error.
$ lldb
(lldb) p/T -536870212 (int) $0 = '?\0\x02?'
nope, not a 4CC
(lldb) p/x -536870212 (int) $1 = 0xe00002bc
aha, that looks like an IOKit error.
$ grep -r 2bc /System/Library/Frameworks/IOKit.framework/Headers /System/Library/Frameworks/IOKit.framework/Headers/IOReturn.h:#define kIOReturnError iokit_common_err(0x2bc) // general error
Sorry I don't know anything about that...
On Nov 7, 2012, at 12:22 , Dominic Feira < email@hidden> wrote: When you get an error back from core audio that doesn't translate to a 4 char error code, like this one, it usually means that you passed an invalid component instance. So, in this case the variable that should be a valid Audio Unit is most likely garbage.
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