Hi everybody,
we are currently experiencing a problem with an LC application that is simply
trying to catch a picture from a webcam.
The executable works properly if it’s not code signed.
After I sign the application it crashes at the very first camera access attempt
(when the application should get the access privileges to the device).
I.E. the following causes the crash:
cameraControlCreate myCameraControlName
put cameraControlGet(myCameraControlName, "devices") into cameraDevices
The application returns me the a log after the crash (i am not able to attach
it due to the list file size limitation).
From line 35 of the log you can see some error related to
com.apple.avfoundation.
This is why I think it’s related to it.
Can someone provide information about this or had the same problem?
Is there a workaround or suggestion about it?
Here follows an extract of the error log:
0 libsystem_kernel.dylib 0x00007fff620c71ee __open + 10
1 com.apple.CoreFoundation 0x00007fff36054ba3
_CFBundleGrokFileType + 239
2 com.apple.CoreFoundation 0x00007fff36054a6c
_CFBundleGrokBinaryType + 64
3 com.apple.CoreFoundation 0x00007fff3612ccfd
_CFBundleLoadExecutableAndReturnError + 405
4 com.apple.CoreFoundation 0x00007fff3608d8a1
CFBundleGetFunctionPointerForName + 27
5 com.apple.CoreMedia 0x00007fff3713147e
FigRegistryItemGetFactory + 68
6 com.apple.CoreMediaIO 0x00007fff372698f1
CMIOUnitCreateFromDescription + 1351
7 com.apple.CoreMediaIO 0x00007fff37256aa9
CMIOUnitNodeInfo::Open() + 59
8 com.apple.CoreMediaIO 0x00007fff37245aca
CMIOGraph::CreateNode(unsigned int, unsigned int, OpaqueCMIOUnit*,
CMIOUnitDescription const&, void const*, int&) + 174
9 com.apple.CoreMediaIO 0x00007fff372458f7 CMIOGraphCreateNode
+ 333
10 com.apple.avfoundation 0x00007fff3212a1a1
-[AVCaptureDeviceInput
addInputUnitsForInputPort:toGraph:ofCaptureSession:error:] + 609
11 com.apple.avfoundation 0x00007fff32129df2 -[AVCaptureSession
_buildGraphUnitsForInputPort:error:] + 727
12 com.apple.avfoundation 0x00007fff320f8280 -[AVCaptureSession
_buildAndRunGraph] + 659
13 com.apple.avfoundation 0x00007fff320fcb48 -[AVCaptureSession
_setRunning:] + 247
14 com.apple.avfoundation 0x00007fff320fc9e7 -[AVCaptureSession
startRunning] + 97
65 com.apple.AppKit 0x00007fff3385821a
-[NSWindow(NSEventRouting) _reallySendEvent:isDelayedEvent:] + 1899
66 com.apple.AppKit 0x00007fff33857867
-[NSWindow(NSEventRouting) sendEvent:] + 478
67 com.apple.AppKit 0x00007fff336f704f
-[NSApplication(NSEvent) sendEvent:] + 331
74 com.apple.Foundation 0x00007fff383137aa
__NSFireDelayedPerform + 411
75 com.apple.CoreFoundation 0x00007fff36086a60
__CFRUNLOOP_IS_CALLING_OUT_TO_A_TIMER_CALLBACK_FUNCTION__ + 20
76 com.apple.CoreFoundation 0x00007fff3608660c __CFRunLoopDoTimer +
851
77 com.apple.CoreFoundation 0x00007fff36086152 __CFRunLoopDoTimers
+ 330
78 com.apple.CoreFoundation 0x00007fff36067362 __CFRunLoopRun + 2130
79 com.apple.CoreFoundation 0x00007fff360668be CFRunLoopRunSpecific
+ 455
80 com.apple.HIToolbox 0x00007fff3535296b
RunCurrentEventLoopInMode + 292
81 com.apple.HIToolbox 0x00007fff353525ad
ReceiveNextEventCommon + 355
82 com.apple.HIToolbox 0x00007fff35352436
_BlockUntilNextEventMatchingListInModeWithFilter + 64
83 com.apple.AppKit 0x00007fff336ec987 _DPSNextEvent + 965
84 com.apple.AppKit 0x00007fff336eb71f
-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:]
+ 1361
85 com.apple.AppKit 0x00007fff336e583c -[NSApplication run]
+ 699
87 libdyld.dylib 0x00007fff61f913d5 start + 1
Thank you
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