On 15/12/2019 10:38, Till Kamppeter wrote:
On 15/12/2019 05:10, Olaf Meeuwissen wrote:
Hi list,
I thought you might like to know that I've merged the escl backend
yesterday. This backend was written by Touboul Nathane and Thierry
Huchard at Ordissimo. It is licensed under the terms of the GPL,
either version 3 or, at your option, any later version.
The backend should support many of the large range of devices that
support Apple's AirPrint protocol. For a long list of potentially
supported devices see
https://support.apple.com/en-us/HT201311
The backend's description file does not list any specific devices yet
but the merge request listed a few devices that are known to work for
some definition of work ;-)
Please note that the escl backend only supports these devices over a
network connection, not via USB or similar connections.
The backend currently only supports image data transfer in JPEG format
but Thierry indicated he wanted to add support for PNG and PDF as well.
For the gory details see merge request 242.
https://gitlab.com/sane-project/backends/merge_requests/242
On a related note, there is another merge request for a canon_lide70
backend. I'll be getting to that shortly, relatively speaking :-)
Hope this helps,
I have the HP DeskJet 2540 MF device here. Its DNS-SD record is:
----------
Found service 'Deskjet 2540 series [E7DDC7]' of type '_uscan._tcp' in domain
'local' on 3.1.
Service data for service 'Deskjet 2540 series [E7DDC7]' of type '_uscan._tcp' in
domain 'local' on 3.0:
Host HP5CB901E7DDC7.local (192.168.223.1), port 8080, TXT data:
['duplex=F', 'is=platen', 'cs=binary,color,grayscale', 'rs=/eSCL',
'representation=', 'UUID=1c852a4d-b800-1f08-abcd-5cb901e7ddc7', 'note=',
'adminurl=http://HP5CB901E7DDC7.local.', 'ty=HP Deskjet 2540 series',
'pdl=application/octet-stream,application/pdf,image/jpeg', 'vers=2.0', 'txtvers=1']
----------
Seems that it also supports eSCL, with JPEG and PDF as output format.
Till
Seeing that my HP does eSCL, I have investigated the source code of HPLIP, the
free software HP printer/MF device driver suite, and it seems to also support
eSCL for scanning, containing the source file
scan/sane/escl.c
scan/sane/escl.h
This could perhaps contain missing pieces for your eSCL backend, like PDF (or
any uncompressed raster) output, USB support, ...
In the list of supported models
data/models/models.dat
on all with "scan-type=9" sSCL is used by HPLIP (see also io/hpmud/hpmud.h), but
there are more models, like ny DeskJet 2540 which supports eSCL according to its
DNS-SD record.
Till
Till
