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Fix crash when polling for non-existent Kinects.

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If no Kinects are present, crash can result from
stepping beyond end of device list. Now we check
to ensure this does not happen.
This commit is contained in:
Sam Bromley 2012-07-26 12:36:21 -02:30
parent 49b55a7245
commit 966a652142
1 changed files with 6 additions and 1 deletions
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7
modules/highgui/src/cap_openni.cpp
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@ -575,7 +575,12 @@ CvCapture_OpenNI::CvCapture_OpenNI( int index )
// Chose device according to index
xn::NodeInfoList::Iterator it = devicesList.Begin();
for( int i = 0; i < index; ++i ) it++;
for( int i = 0; i < index && it!=devicesList.End(); ++i ) it++;
if ( it == devicesList.End() )
{
std::cerr << "CvCapture_OpenNI::CvCapture_OpenNI : Faile
return;
}
xn::NodeInfo deviceNode = *it;
status = context.CreateProductionTree( deviceNode, productionNode );