Re: Edirol FA-101 and CoreAudio (Jeff Moore)
Re: Edirol FA-101 and CoreAudio (Jeff Moore)
- Subject: Re: Edirol FA-101 and CoreAudio (Jeff Moore)
- From: "Roni Music" <email@hidden>
- Date: Tue, 13 Sep 2005 14:28:14 +0200
> Subject: Re: Edirol FA-101 and CoreAudio
>
> If you look closely, the crash is happening on the IO thread. From
> the back trace, I'd guess that it is happennig inside an
> AudioConverter or the the Render method of an AudioUnit somewhere.
It happens when my input callback calls AudioUnitRender()
(exactly the same as in the "afrecord" example or TN 2091)
>
> My guess is that the reason for the crash is that your app has
> encountered a NULL buffer where it didn't expect to find one and
> passed it to the converter or AU in question.
All memory buffers are valid at this point.
They are deleted as the last thing in my destructor, so they are valid,
unless the following calls returns before they have performed what they are supposed to do.
AudioOutputUnitStop(mInputUnit);
AudioUnitUninitialize(mInputUnit);
CloseComponent(mInputUnit);
At this point the AURenderCallback should never ever be called again, right?
So now it should be safe to destroy all memory.
The crash happens only when closing down the recording stuff, else it works fine.
The custommer also reports that everything worked OK untill he upgraded to Tiger
I have never experienced the problem myself on any version of OS X
My software is built with XCode 2.1 using gcc 3.3 if that matters
Rolf / Roni Music
>
> On Sep 12, 2005, at 2:07 AM, Roni Music wrote:
>
> > I have a crasch that only occurs with the Edirol FA-101 FireWire
> > interface and Tiger for one of my custommers.
>
>
> --
>
> Jeff Moore
> Core Audio
> Apple
>
>
Thread 4 Crashed:
0 <<00000000>> 0xffff8b2c __memcpy + 908 (cpu_capabilities.h:189)
1 ...pple.audio.units.Components 0x9a2efa08 dyld_stub__keymgr_get_and_lock_processwide_ptr + 33288
2 ...pple.audio.units.Components 0x9a2ef974 dyld_stub__keymgr_get_and_lock_processwide_ptr + 33140
3 ...pple.audio.units.Components 0x9a224d10 DefaultOutputAUEntry + 29112
4 ...pple.audio.units.Components 0x9a2210e4 DefaultOutputAUEntry + 13708
5 ...pple.audio.units.Components 0x9a220b3c DefaultOutputAUEntry + 12260
6 ...pple.audio.units.Components 0x9a2f15a4 dyld_stub__keymgr_get_and_lock_processwide_ptr + 40356
7 ...ple.CoreServices.CarbonCore 0x90b51ff0 CallComponent + 260
8 ...apple.audio.units.AudioUnit 0x94179cc4 AudioUnitRender + 56
9 com.ronimusic.audiocompanion 0x00030b9c CMyAudioFileRecorder::InputProc(void*, unsigned long*, AudioTimeStamp const*, unsigned long, unsigned long, AudioBufferList*) + 204 (CMyAudioFileRecorder.cpp:547)
10 ...pple.audio.units.Components 0x9a2245d0 DefaultOutputAUEntry + 27256
11 com.apple.audio.CoreAudio 0x913b74e0 IOA_Device::CallIOProcs(AudioTimeStamp const&, AudioTimeStamp const&, AudioTimeStamp const&) + 376
12 com.apple.audio.CoreAudio 0x913b71f4 HP_IOThread::PerformIO(AudioTimeStamp const&) + 532
13 com.apple.audio.CoreAudio 0x913b5230 HP_IOThread::WorkLoop() + 1156
14 com.apple.audio.CoreAudio 0x913b4d98 HP_IOThread::ThreadEntry(HP_IOThread*) + 16
15 com.apple.audio.CoreAudio 0x913a5f7c CAPThread::Entry(CAPThread*) + 96
16 libSystem.B.dylib 0x9002c3d4 _pthread_body + 96
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