[sane-devel] Re: HP 2400 Status

[Parag N]

Hello Stef,
         So are you working on 2400 scanner backend development? who else
are there on sane-devel also working on development of 2400 scanner?
        I want to know that, is development of driver code for GL646 chipset
and then development of scanners using that chipset are different things?
       That mean to have backend support, first chipset support code must
have included and then specific hardware info for scanner is needed to
include it in driver code. is that right?
      Correct me if i am wrong.
So what is exaclty remaining? whatever i understood from code and mails on
this list archive is that both GL646 and HP 2400 support is still in
development and half implemented only right?

Regards,
Parag.

On 12/1/05, Stéphane VOLTZ <stefdev at modulonet.fr> wrote:
>
>         Hello,
>
>         the HP2400 is no yet supported. There early elements in the
> genesys backend
> but it won't work. In theory, the 2400 is supposed to be like the 2300,
> but
> with a 1200 dpi max resolution instead of 600.
>         What is left to do is to put the exact values needed in
> genesys_devices.c .
> These values will have to be found in usb logs of the scanner operating
> under
> windows.
>         Then, you can use all HP2300 constants as a guide to find all the
> places
> where you'll have to update the code for 2400 handling. Be aware that
> doing
> such will use the 'old methods' for building slope tables and computing
> exposure. It is worth evaluating the 'new methods' used in the gl841,
> since
> we may swith the 2300 and MD5345 to it some time in the futur.
>         One problem I got with the 2300 was the way it sets the frontend.
> I couldn't
> get it work like in the usb logs, and fall back to the working current
> method
> which modelled after the MD5345 method.
>         I used usbsniff+ a bunch of awk scripts to decode them. They are
> appended to
> the message.
>
> Regards,
>         Stef
>
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.alioth.debian.org/pipermail/sane-devel/attachments/20051201/2d4f8cac/attachment.html