DVCPROHDAudio.plugin freezes at instantiation
DVCPROHDAudio.plugin freezes at instantiation
- Subject: DVCPROHDAudio.plugin freezes at instantiation
- From: Martin Hairer <email@hidden>
- Date: Tue, 20 Apr 2010 11:47:55 +0100
Hi,
I was just wondering if this is a known problem or if there's a fault somewhere with my software...
On some user's machines, my software freezes upon launch, which is obviously rather annoying.
In every single instance where this happened, the problem was resolved by removing the
"DVCPROHDAudio.plugin" from the user's Library folder. The problem seems to be triggered
by this plug-in only under certain circumstances (certain devices attached to the computer),
so I actually haven't been able to reproduce it myself on any of my machines. However, I got
about a dozen or so user's reports and they can all generate traces that are similar to the one
shown at the end of this email (essentially it gets stuck in APW::Mux::DVCProHD::Muxer::Muxer).
If this is a known problem, does Apple have a fix for this or should I try to file a bug report? Also,
does anyone have an idea why this doesn't cause every single Audio related software on these
user's machines to freeze? After all, most of these would probably make a call to
AudioHardwareAddPropertyListener at startup. The offending method in MTCoreAudioDevice is
+ (void) load
{
_MTCoreAudioHardwareDelegate = nil;
AudioHardwareAddPropertyListener ( kAudioPropertyWildcardPropertyID, _MTCoreAudioHardwarePropertyListener, NULL );
}
Is there anything wrong with calling AudioHardwareAddPropertyListener in the "load" method of
an Objective-C class? (i.e. should I try to defer that call to a later time?) Regards,
Martin
HairerSoft
http://www.hairersoft.com/
---------------------------------------------
Sampling process 920 for 3 seconds with 1 millisecond of run time between samples
Sampling completed, processing symbols...
Analysis of sampling Amadeus Pro (pid 920) every 1 millisecond
Call graph:
2429 Thread_40083 DispatchQueue_1: com.apple.main-thread (serial)
2429 _dyld_start
2429 dyldbootstrap::start(macho_header const*, int, char const**, long)
2429 dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**)
2429 dyld::initializeMainExecutable()
2429 ImageLoader::runInitializers(ImageLoader::LinkContext const&)
2429 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int)
2429 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int)
2429 ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int)
2429 dyld::notifySingle(dyld_image_states, ImageLoader const*)
2429 load_images
2429 call_load_methods
2429 +[MTCoreAudioDevice load]
2429 AudioHardwareAddPropertyListener
2429 HALSystem::CheckOutInstance()
2429 HALSystem::InitializeDevices()
2429 HALPlugInManagement::Initialize()
2429 HALPlugInManagement::CreateHALPlugIn(HALCFPlugIn const*)
2429 std::_Rb_tree<unsigned long, std::pair<unsigned long const, HPStream*>, std::_Select1st<std::pair<unsigned long const, HPStream*> >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, HPStream*> > >::insert_unique(std::pair<unsigned long const, HPStream*> const&)
2429 APW::CA::HALPlugIn::DVCProHD::PlugIn::Initialize()
2429 OpenComponent
2429 OpenAComponent
2429 CallComponentOpen
2429 CallComponentDispatch
2429 MuxerComponentComponentDispatch(ComponentParameters*, APW::Mux::DVCProHD::MuxerComponentGlobals*)
2429 CallComponentFunctionCommonWithStorage(char**, ComponentParameters*, long (*)(), unsigned long)
2429 MuxerComponentOpen(APW::Mux::DVCProHD::MuxerComponentGlobals*, ComponentInstanceRecord*)
2429 APW::Mux::DVCProHD::Muxer::Muxer()
2429 AVS::CreateAVCDeviceController(AVS::AVCDeviceController**, int (*)(AVS::AVCDeviceController*, void*, AVS::AVCDevice*), void*, int (*)(AVS::AVCDevice*, unsigned int, void*, void*))
2428 usleep$UNIX2003
2422 nanosleep$UNIX2003
2420 __semwait_signal
2 __spin_lock
6 cerror
6 cthread_set_errno_self
4 __error
2 cthread_set_errno_self
1 AVS::CreateAVCDeviceController(AVS::AVCDeviceController**, int (*)(AVS::AVCDeviceController*, void*, AVS::AVCDevice*), void*, int (*)(AVS::AVCDevice*, unsigned int, void*, void*))
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