Hi,
On 8/9/06, Johannes Meixner <jsm...@suse.de> wrote:
>
> Hello,
>
> On Aug 9 13:03 Parag N(????) wrote (shortened):
> > With reference to Johannes Meixner's mail to this mailing list
> > http://lists.alioth.debian.org/pipermail/sane-devel/2006-August/017446.html,
> > I have created a patch that will make sane-find-scanner not to detect
> > Non-Scanner USB devices.
>
> The following in the patch looks wrong for me:
> ----------------------------------------------------------------
> + if (i->bInterfaceClass == 255)
> + {
> + --is_scanner;
> ----------------------------------------------------------------
> because there are USB scanners which have bInterfaceClass = 255
> e.g. my Epson all-in-one device, see my other mail where I
> listed sane-find-scanner and lsusb results on three hosts:
> ----------------------------------------------------------------
> Bus 002 Device 003: ID 04b8:080f Seiko Epson Corp.
> bDeviceClass 0 (Defined at Interface level)
> idVendor 0x04b8 Seiko Epson Corp.
> idProduct 0x080f
> bInterfaceClass 255 Vendor Specific Class
> iInterface 5 EPSON Scanner
> bInterfaceClass 7 Printer
> iInterface 6 USB Printer
> bInterfaceClass 8 Mass Storage
> iInterface 7 USB Mass Storage
> ----------------------------------------------------------------
> and my plain Epson USB scanner has also bInterfaceClass = 255
> ----------------------------------------------------------------
> Bus 001 Device 002: ID 04b8:0121 Seiko Epson Corp.
> bDeviceClass 255 Vendor Specific Class
> idVendor 0x04b8 Seiko Epson Corp.
> idProduct 0x0121
> bInterfaceClass 255 Vendor Specific Class
> iInterface 0
> ----------------------------------------------------------------
Thanks for replying and testing patch. So this is not useful to
make sane-find-scanner not to show up non USB Scanner devices.
I agree only option then to have a proper maintained list from all
supported scanners by sane-backend.
I got an idea how about writing a code that will parse each
vendor's descriptions files and show up its name,usb id's, backend
status like good,basic,complete? I also found not all entries in .desc
files have usb id's.
Regards,
Parag.
