I am trying to communicate with usb webcam.While sniffing with usb sniffer under request column I found strange requests,and I can not send them using usb4j api.These are(exact words under request column in usb sniffer ) 1.Class Interface 2.Select Interface 3.Set Power While using device.createUsbControlIrp() and device.syncSubmit(usbcontrolirp) sniffer always shows 'control transfer' text under request column.And I can not copy above 3 in anyway with this So why & what are these requests and how can I issue them?
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