Hi all, I'm working on a backend for scanners based on the 'niash' chipset, found in scanners like the HP3300, HP3400, HP4300, (HP5400?) and the Agfa Snapscan Touch.
Until now I've used libusb to provide platform independent USB access which works mostly fine. I know there's also the sanei_usb functions, but I have some issues using them. When I do a control transfer I need to pass some parameters involving (for example) USB_TYPE_VENDOR, USB_RECIP_DEVICE and USB_DIR_IN which are defined in linux/usb.h, obviously not platform independent. I see that the canon630u backend solved this by defining those symbols locally. I suspect that the symbols mentioned above are really part of the USB specification, so they are not platform specific. Maybe it's a good idea to add them to sanei_usb.h? What is actually the preferred USB access method for SANE? And for what reasons? Kind regards, Bertrik Sikken
