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Hi,<br>
<br>
<div class="moz-cite-prefix">On 2022-10-23 23:43, Вассисуалий Пупкин
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1666592623.0745960000.xhh1lk12@frv55.fwdcdn.com">
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<div><span
style="font-family:Arial;font-size:12pt;line-height:14pt;">Hello.</span></div>
<div><br>
</div>
<div><span
style="font-family:Arial;font-size:12pt;line-height:14pt;">Did
the scan report intercepted by wareshark help? How can I
additionally help to resolve the issue with the drivers
on the Canon MF112?</span></div>
<div><span
style="font-family:Arial;font-size:12pt;line-height:14pt;"><span
style="font-family:Arial;font-size:12pt;line-height:14pt;">Sending
another report from Wareshark.</span></span></div>
<div><span
style="font-family:Arial;font-size:12pt;line-height:14pt;"><br>
</span></div>
<div><span
style="font-size:12pt;line-height:14pt;font-family:Arial;">Many
thanks!</span></div>
</span></div>
</span>
</blockquote>
<br>
I have decoded the data stream from the PCAP and converted it into a
PNM file to see what it looks like and I can see what you see. For
RAW data, there aren't enough bytes for the dimensions requested
(150dpi at 1280x2100 geometry) and I get a mostly empty document
with a strip of fuzz at the top.<br>
<br>
I did wonder if the data was JPEG because some pixma machines output
JPEG but I do not see a JFIF header in the data.<br>
If you wish, you could set the machine definition to expect JPEG in
the entry in pixma_imageclass.c for your machine, at the bottom of
the file:<br>
<br>
DEV ("Canon i-SENSYS MF110/910 Series", "MF110", MF110_PID, 600,
0, 640, 1050, PIXMA_CAP_JPEG),<br>
<br>
...and rebuild the backend. Then see if it works for you. I don't
know if the JFIF header requirement is strictly necessary. This is
something that I am learning about at the moment. If you need help
on building the backend then let us know and we can help.<br>
<br>
Some pixma machines (like in the mp150 family) support JPEG only on
the ADF. I don't see such a restriction in the code for imageClass
machines however.<br>
<br>
Cheers,<br>
Ralph<br>
<br>
<br>
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