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3DMixer and AudioFile crash

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3DMixer and AudioFile crash

Subject: 3DMixer and AudioFile crash
From: Corwin Light-Williams <email@hidden>
Date: Mon, 15 May 2006 00:13:52 -0700

I have an app that works fine using the AudioFile API and a kAudioUnitSubType_StereoMixer. I can play sounds, update, stop, start, etc. On a whim, I copied the code from TN2112 and made the mixer a kAudioUnitSubType_3DMixer. However, this causes a crash. Shortly after I call AUGraphUpdate to reflect a new connection to the graph, I get a crash in another thread.

I also tried just adding a mixer unit in between the output and audiofile of the PlayFile example code, and it crashes there too.

I have no idea what I'm doing wrong, but I'm sure it's something pretty silly.

Thanks!

Corwin

(here's the stack trace of the crash.)

#0 0xffff06b0 in ___bzero () at /System/Library/Frameworks/ System.framework/PrivateHeaders/i386/cpu_capabilities.h:184 #1 0x700814f8 in AUScheduledSoundPlayerEntry () #2 0x700085ac in DefaultOutputAUEntry () #3 0x7000fa5c in AUHighShelfFilterEntry () #4 0x70042b0d in AUPeakLimiterEntry () #5 0x70042c5e in AUPeakLimiterEntry () #6 0x7004650a in AUMixer3DEntry () #7 0x7004752e in AUMixer3DEntry () #8 0x700085ac in DefaultOutputAUEntry () #9 0x7000fa5c in AUHighShelfFilterEntry () #10 0x70008e45 in DefaultOutputAUEntry () #11 0x700d9e09 in AUNetSendEntry () #12 0x700d94bb in AUNetSendEntry () #13 0x93e79e81 in AudioConverterChain::CallInputProc () #14 0x93e79b1e in AudioConverterChain::FillBufferFromInputProc () #15 0x93e79ac2 in BufferedInputAudioConverter::CallInputProc () #16 0x93e79822 in BufferedInputAudioConverter::GetAllInputBytes () #17 0x93e79755 in Resampler2Wrapper::RenderOutput () #18 0x93e78f6b in BufferedAudioConverter::FillBuffer () #19 0x93e7932a in BufferedAudioConverter::GetInputBytes () #20 0x93e79207 in CBRConverter::RenderOutput () #21 0x93e78f6b in BufferedAudioConverter::FillBuffer () #22 0x93e790f9 in AudioConverterChain::RenderOutput () #23 0x93e78f6b in BufferedAudioConverter::FillBuffer () #24 0x93e78df8 in AudioConverterFillComplexBuffer () #25 0x700089dd in DefaultOutputAUEntry () #26 0x700085ac in DefaultOutputAUEntry () #27 0x70007a51 in DefaultOutputAUEntry () #28 0x91462c76 in HP_IOProc::Call () #29 0x9146229e in IOA_Device::CallIOProcs () #30 0x91462029 in HP_IOThread::PerformIO () #31 0x9146057b in HP_IOThread::WorkLoop () #32 0x914601d1 in HP_IOThread::ThreadEntry () #33 0x9145480d in CAPThread::Entry () #34 0x90024a27 in _pthread_body ()

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