libusb, emphatically _wont_ tell him what chipset is in use with the camera.
Vendor x, could use chip_zelda in a webcam and have a Vendor/Device ID,
completely different to Vendor y, using chip_zelda again.
Example being a camera I dealt with recently called the PCL w310, which
is sold in PC World. The Vendor/Device ID, is not matched up to anything
google will return for you, however, if you take the time to check out
the chipset, you'll find that there are any number of devices that use
the same chipset, and thus can reasonably be said to _most_ likely work,
with whatever driver the guys involved has managed to develop for that
camera's chipset.
So, no, libusb, just won't help you there.
Best
Bryan
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