[sane-devel] Reading all buttons on CanoScan LiDE 400

[Jozef Riha]

Hello,

I got CanoScan LiDE 400 (ID 04a9:1912 Canon, Inc. LiDE 400) and trying to
make all front buttons work with scanbd. Scanner is recognized as pixma
device.

$ scanimage -L
device `pixma:04A91912_46710F' is a CANON CanoScan LiDE 400 multi-function
peripheral

There are 5 front buttons (
https://ij.manual.canon/ij/webmanual/ScanUtility/All/LiDE%20400/1.0/EN/SU/screens/su129_c.gif
),
left to right:

 - [Scan start button]
 - [Finish button]
 - [Auto scan]
 - [Copy]
 - [Send]

Scanbd/sane is interpreting those as:
 - [Scan start button] - recognized as Button-1 (PIXMA_EV_BUTTON1 - color
scan)
 - [Finish button] - recognized as Button-2 (PIXMA_EV_BUTTON2 - b/w scan)
 - [Auto scan] - recognized as Button-1 (PIXMA_EV_BUTTON1 - color scan)
 - [Copy] - recognized as Button-1 (PIXMA_EV_BUTTON1 - color scan)
 - [Send] - recognized as Button-1 (PIXMA_EV_BUTTON1 - color scan)

So there is a lot of duplication and instead of 5 buttons one can
effectively use only 2. This is what I see when capturing USB packets with
usbmon loaded.

cat /sys/kernel/debug/usb/usbmon/3u:

 - [Scan start button] - 0:1024 32 = 00000000 01000000 00000000 00000000
00000005 00000000 00000000 00000000
 - [Finish button] - 0:1024 32 = 00000000 01000000 00000000 00000000
00000006 00000000 00000000 00000000
 - [Auto scan] - 0:1024 32 = 00000000 01000000 00000000 00000000 00000002
00000000 00000000 00000000
 - [Copy] - 0:1024 32 = 00000000 01000000 00000000 00000000 00000001
00000000 00000000 00000000
 - [Send] - 00000000 01000000 00000000 00000000 00000003 00000000 00000000
00000000

Would it be possible to add definitions for all buttons based on the
information above?

A few information about my system:

Arch Linux x86_64 (kernel 5.13.6-arch1-1), sane 1.0.32-3, scanbd 1.5.1-5

Thank you, jose
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://alioth-lists.debian.net/pipermail/sane-devel/attachments/20210731/7d7034d4/attachment.htm>