[sane-devel] Lexmark CX510de printer / scanner

2018-04-09 Thread Pierre THOMAS

  
  
Bonjour,
  
  When I use xane with
my HP Scanjet G4050 scanner, it is possible to define a frame (dot lines) in the
preview window
before scanning.
  
When I use xane with my Lexmark CX510de
scanner, it is impossible to select a frame in
the preview window (no
  dot lines), I
  am obliged to scan the
full image.
  How
can I solve this problem
?

 Regards,

Pierre

  


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[sane-devel] Offset problem

2018-04-09 Thread Pierre THOMAS

  
  
Bonjour,
  
  I use HP Scanjet G4050 scanner with
Mageia Linux 6 / xsane version 0.999.
When I select a frame in the preview
  window, the resulting image is
correct for a 100 dpi resolution.
For a 200 dpi resolution there is
  a negative vertical offset, I mean about 2 mm are
  missing at the bottom of the picture (about 2 mm added
  at the top).
  For 200, 400 and 600 dpi
resolution there is a positive offset, I mean about
2 mm are missing at the top of the image (about 2 mm
added at the bottom)

What can I do to solve this
  problem which is very annoying. I do
  not want to have to reboot to Windows ...
  
  When I use the scanner
with Windows (in the same PC), with the HP
software or with the Windows scanning
software the result is correct.
  
  Regards,

Pierre

  


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[sane-devel] Adding support for scanner

2018-04-09 Thread John Oliver
I have a Canon imageCLASS MF416dw that does not appear to be supported
by sane.  How can we get it added?  I'm happy to do whatever legwork I
can.

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Re: [sane-devel] HP5590 and scanbd button recognition

2018-04-09 Thread Cesello
Hi Ilia,
some news about my patch on hp5590.c ? Was usefull ? Un-usefull ? Very 
Bad thing ? :)

Let me know
Damiano


On 13/03/2018 20:56, Ilia Sotnikov wrote:
> Excellent, thanks Damiano! As a quick step you could send the patch over to 
> the DL and I’ll adapt it if needed. Or you could create a merge request, 
> which would be more elegant though require additional steps.
> ---
>  Ilia Sotnikov
>
>> On Mar 13, 2018, at 21:29, Cesello  wrote:
>>
>> Hi Ilia and Jared
>> I'm just registered to this ML to propose my patch to this back end
>> driver made in the past weekend.
>> And I see someone have my same problem :)
>> I've used hp5590 scanner with scanbuttond for years. Some week ago I've
>> upgraded my system to debian 9 and
>> discovered that scanbd does not works anymore with my scanner. I really
>> need this functionality so I've made
>> modifications to hp5590.c code to export the options .
>> Is a first attempt and the backend called by scanbd threads makes
>> buttons quite  responsive
>> without using a self polling thread.
>> I've made a patch file for debian 9  stable version package (yes but the
>> real patch is for hp5590.c only)
>> If you are interested I can send it (or tell me if I have to release
>> into the repo directly I'm new user here :))
>>
>> Damiano
>>
>>> On 07/03/2018 14:01, hostcc at gmail.com (Ilia Sotnikov) wrote:
>>> Hi,
>>> backend author here - it shouldn't be too much of effort to expose
>>> button status so scanbd can use it. Though haven't gone thru its
>>> documentation to understand requirements. As a technical insight -
>>> there is hp5590_read_buttons() function in hp5590_cmds.c that reads
>>> button status.
>>> However, I'll seek for a volunteer to test a change as I don't have
>>> access to HW currently.
>>>
>>> On Wed, Mar 7, 2018 at 12:40 AM, Wilhelm Meier
>>>  wrote:
 Please try the old scanbuttond-backend for this type of scanner - it
 should work. The HP sane backend sadly doesn't support the buttons on
 this scanner.

 Am 06.03.2018 um 15:46 schrieb Jared Hedegaard:
>> Main question: does the HP 5590 support button presses or am I just 
>> setting this up incorrectly?
>>
>> I'm been successful using scanbd with SANE backends to get scanning 
>> working over my network and locally on the host machine, but I can't 
>> seem to get it to recognize button presses, either running scanbd in 
>> foreground or background.
>>
>> For past testing, it seems that actions defined in scanbd.conf are used 
>> to tie to the backend options? From searching /var/log/syslog, I 
>> expected to track button presses or get some sort of trigger feedback, 
>> and I didn't think I needed an action set up for it.
>>
>> Any help on this one would be much appreciated. Thanks.
>>
>> Jared H
>>
> After a bit more research, it looks like doing this with the SANE backend 
> for HP 5590 is not possible. scanbd is used to tie custom actions to the 
> options available on the scanner. In this case, none of the 10 options 
> seem to return values. They all look to be ones that I designate from 
> some client software.
>
> scanbd: found active option[1] tl-x (type: 2) for device 
> hp5590:libusb:001:008
> scanbd: found active option[2] tl-y (type: 2) for device 
> hp5590:libusb:001:008
> scanbd: found active option[3] br-x (type: 2) for device 
> hp5590:libusb:001:008
> scanbd: found active option[4] br-y (type: 2) for device 
> hp5590:libusb:001:008
> scanbd: found active option[5] mode (type: 3) for device 
> hp5590:libusb:001:008
> scanbd: found active option[6] source (type: 3) for device 
> hp5590:libusb:001:008
> scanbd: found active option[7] resolution (type: 1) for device 
> hp5590:libusb:001:008 scanbd: found active option[8] extend-lamp-timeout 
> (type: 0) for device hp5590:libusb:001:008
> scanbd: found active option[9] wait-for-button (type: 0) for device 
> hp5590:libusb:001:008
> scanbd: found active option[10] preview (type: 0) for device 
> hp5590:libusb:001:008
>
> In this case, it looks like I will have to try the old scanbuttond 
> backends for this, or see if there are optional enhancements for the SANE 
> hp5590 backend.
>
> Jared
>
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>>
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Re: [sane-devel] What does basic support mean on the supported devices page for Plustek Opticbook 3600?

2018-04-09 Thread Alex ARNAUD

Le 09/04/2018 à 14:50, Olaf Meeuwissen a écrit :

The meaning of "basic" and other status classifiers are explained in the
Legend at the bottom of the page.  There's a link near the top, BTW.


Thank you very much.


for the latest information.  FWIW, the support status of the scanner you
mentioned has *not* changed.


What is the reason that make a device support to basic? The lack of time 
or the lack of documentation? In another word, if I tell to my user that 
his scanner works, if some feature is missing, could we collaborate 
together to implement them or is it impossible?


Best regards,
Alex.

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Re: [sane-devel] What does basic support mean on the supported devices page for Plustek Opticbook 3600?

2018-04-09 Thread Olaf Meeuwissen
Hi Alex,

Alex ARNAUD writes:

> Hello all,
>
> I'm trying to help a visual-impaired person that wants to switch to
> GNU/Linux.
>
> He has a Plustek Opticbook 3600 and I found on this page:
> https://www.chiark.greenend.org.uk/doc/libsane/supported.html that the
> support of this device is noted as basic but honestly I don't understand
> what this mean.

The meaning of "basic" and other status classifiers are explained in the
Legend at the bottom of the page.  There's a link near the top, BTW.

> What does basic support for such device mean ?

  basic means it works at least in the most important modes but quality
  is not perfect.

> Is the page I've found correct to check if an hardware is compatible
> with Sane?

The page is not wrong but a bit out-of-date.  Have a look at

  https://sane-project.org/sane-backends.html

for the latest information.  FWIW, the support status of the scanner you
mentioned has *not* changed.

Hope this helps,
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[sane-devel] What does basic support mean on the supported devices page for Plustek Opticbook 3600?

2018-04-09 Thread Alex ARNAUD

Hello all,

I'm trying to help a visual-impaired person that wants to switch to 
GNU/Linux.


He has a Plustek Opticbook 3600 and I found on this page: 
https://www.chiark.greenend.org.uk/doc/libsane/supported.html that the 
support of this device is noted as basic but honestly I don't understand 
what this mean.


What does basic support for such device mean ?

Is the page I've found correct to check if an hardware is compatible 
with Sane?


Best regards.
--
Alex ARNAUD
Visual-Impairment Project Manager
Hypra - "Humanizing technology"

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