Get deviceHandle used by VideoCapture()

C++
1

Hi,

I’m using VideoCapture() with V4L2 API to grab frames from a camera device.

Ideally I would like to get access to the deviceHandle member so that I can set some parameters directly with ioctl() without using the VideoCapture.set() function.
An alternative would be to open the device again and get a new device handler but I would like to avoid having multiple file descriptors for a same device.

Is there a way to access it ? I was expecting to get access to them through the icap protected member with a new class inheriting from VideoCapture(), but it seems that it’s not hidden there.

Is there a reason why I should not try to access it ?

Thanks for your help.

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2

probably none, and whoever wrote the code hadn’t anticipated the need to access those values.

you could check the issues on github for an existing one, or add a new issue to describe your goal and suggested changes.

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