Works only with default camera

[shokarta]

testing in Windows, when i debug list of cameras then properly:

// `[${i}] desc="${dev.description}", id="${dev.id}", default=${dev.isDefault}, position=${dev.position}`
qml: [0] desc="Integrated Camera", id="\\?\usb#vid_5986&pid_212b&mi_00#6&4c4a6fc&0&0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\global", default=false, position=0
qml: [1] desc="Microsoft® LifeCam HD-3000", id="\\?\usb#vid_045e&pid_0779&mi_00#a&33614a15&0&0000#{e5323777-f976-4f5b-9b55-b94699c46e44}\global", default=false, position=0

where defailt is the Integrated Camera.

however when i set the other one:

MediaDevices { id: mediaDevices }
Camera {
	id: myCamera
	cameraDevice: mediaDevices.videoInputs[1]
}
SBarcodeScanner {
	id: barcodeScanner
	camera: myCamera
	captureRect: Qt.rect(1/4, 1/4, 1/2, 1/2)
	...
}

then I am being spammed with:

zxing-cpp deprecation warning: ImageView(nullptr, ...) will throw in the future, use ImageView()
SCodes Error: "ZXing exception: ImageView is null/empty"

however this happes no matter which cameraDevice i set (so same issue when i set mediaDevices.videoInputs[0] or even mediaDevices.defaultVideoInput)

so what is the proper way to set specific camera?

[shokarta]

so I created some calculation of capureRect to provide proper placement of where the scan area is when, it works fine as far as I keep default (not set) camera inside SBarcodeScanner{} (also qDebug of cRect (SBarcodeScanner.cpp on line 63) properly shows proper scan area as i calculated:
QRect(547,267 187x188)

however still, when i set camera myself, then i no longer have any error or debug, however the created cRect in SBarcodeScanner::tryProcessFrame(const QVideoFrame& frame) debugs me:
QRect(0,0 0x0)

which at the end works, it collect the image from camera which I set, however it does not take the scanning area in account, so it looks for barcode in all over the image