[sane-devel] Q: improving epson2 for Epson 12000XL
wsa at kernel.org
Sun Sep 27 11:46:53 BST 2020
> Sorry for not chiming in earlier.
No worries, I'm happy you gave me additional pointers.
> I have been involved with development of the third-party epkowa and
> utsushi backends for many years. A lot of the protocol is documented in
> the code for the utsushi backend via doxygen source comments. See
Ok, more documentation sounds nice. I still have questions about the
gamma tables. I will check.
One thing I could not find out yet: are there any advantages for me when
I use epkowa? I think epson2 does a nice job and it can easily be extended?
> # I guess I could add a job to publish the documentation in a more
> # accessible format via GitLab Pages. Please submit an issue if you
> # would like that.
Well, if it is just for me, I like to read code, so not really needed.
But for others, it might be helpful. Then again, you probably are not
short of tasks.
> There are two documented values: 0xff for autofocus and 0x40 for setting
> it to the glass plate. Other values appear to be allowed.
And they make sense. Using the extreme values I get blurred images.
> > The only question left for me now: Should focus/autofocus settings
> > really have CAP_ADVANCED?
> That's debatable indeed but I'd say CAP_ADVANCED is appropriate for most
Ok, then, I'll keep it!
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