Fix application crashes when page with QZXing closes

ftylitak / qzxing

Qt/QML wrapper library for the ZXing library. 1D/2D barcode image processing library

Apache License 2.0

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Fix application crashes when page with QZXing closes #237

Open dedkovd opened 1 year ago

dedkovd commented 1 year ago

Sometimes, when page with active scanner closes, QZXingFilter is still processing frame but that frame has already been removed with QVideoSink. So, application may be crashed. Qt::QueuedConnection fixes this problem.