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Re: Stabilizing AudioQueue
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Re: Stabilizing AudioQueue


  • Subject: Re: Stabilizing AudioQueue
  • From: Nick Zitzmann <email@hidden>
  • Date: Sun, 14 Sep 2008 23:09:09 -0600


On Sep 14, 2008, at 12:38 AM, Nick Zitzmann wrote:

When I examined the thread that's supposed to render the audio, it appears to be throwing a C++ exception of some sort in AUNetSendEntry(), which might explain things, but AudioQueueStart() still returns noErr.


Here's some more information. I tried this again and got a backtrace of the exception this time:

#0  0x9238c201 in __cxa_throw ()
#1  0x70008617 in dyld_stub_ztocD ()
#2  0x7003e6e2 in SystemOutputAUEntry ()
#3  0x936990e3 in AQAUDevice::DoAddRemove ()
#4  0x9369ae3c in AQAUDevice::AQRenderNotify ()
#5  0x70006026 in dyld_stub_ztocD ()
#6  0x70011d37 in AUGenericOutputEntry ()
#7  0x9611afe3 in HP_IOProc::Call ()
#8  0x9611acd4 in IOA_Device::CallIOProcs ()
#9  0x9611abb0 in HP_IOThread::PerformIO ()
#10 0x96118f8b in HP_IOThread::WorkLoop ()
#11 0x96118aaf in HP_IOThread::ThreadEntry ()
#12 0x96109304 in CAPThread::Entry ()
#13 0x90dab6f5 in _pthread_start ()
#14 0x90dab5b2 in thread_start ()

ztocD() appears to be a vDSP function in vecLib. I already tried linking the code using AudioQueue to vecLib and it didn't help... I wish I knew why dyld was throwing that exception.

Nick Zitzmann
<http://seiryu.home.comcast.net/>
S/MIME signature available upon request




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