Package: sane-utils
Version: 1.4.0-1
scanimage --device='airscan:e1:HP OfficeJet Pro 8130e series [xxxxxx]'
--format=png --mode Gray --resolution 1200
results in an artefact typical for lossy JPEG compression (namely, 8×8 blocks),
although a lossless format (PNG) is requested. Attached is a screenshot from
GIMP at resolution 1600% and my configuration files in /etc/sane.d. We can't
use eSCL USB connection due to other bugs (in Debian bookworm, scanimage
started the physical scanning but terminated before it was over, and in trixie,
cf. https://bugs.debian.org/1118476).
We wish that the data is transformed possibly losslessly using airscan.
Gratefully!
# sane-airscan example configuration file
# You can add scanners manually, using the following syntax:
# [devices]
# name1 = url1 ; add eSCL device
# name2 = url2, protocol ; protocol can be escl or wsd
# name2 = disable ; disable the device
#
# The airscan-discover utility, typically shipped together with
# driver, can help to discover scanners for manual
# addition (see man airscan-discover for more details)
[devices]
#"Kyocera MFP Scanner" = http://192.168.1.102:9095/eSCL
#"Some Unwanted Scanner" = disable
# Various options
#
# Automatic discovery may be enabled (the default) or disabled:
# discovery = enable ; Enable automatic device discovery
# discovery = disable ; Disable both DNS-SD and WS-Discovery
#
# Protocol choice (eSCL vs WSD if both are available)
# protocol = auto ; Best protocol is chosen automatically, the default
# protocol = manual ; Manual choice is offered
#
# WS-Discovery mode
# ws-discovery = fast ; Fast discovery, the default
# ws-discovery = full ; Full discovery, slow and accurate
# ws-discovery = off ; Disable WS-Discovery
#
# Scanner "model" is a string that most of SANE apps display in a list
# of devices. It may be more convenient to use scanner network name
# for this purpose:
# model = network ; use network device name (default)
# model = hardware ; use hardware model name
#
# socket_dir gives an optional path to a directory where local (UNIX) sockets
# can be found. If an eSCL device's URL is in the form unix://socket/eSCL/,
# traffic will be sent through socket_dir/socket instead of TCP. If not
# specified, sockets will be searched for in /var/run.
#
# Proxy mode
# pretend-local = false ; Remote scanners are marked as such (DEFAULT)
# pretend-local = true ; Remote scanners are treated as if they were local
#
# The SANE network protocol destinguishes between locally attached devices,
# and devices that can only be accessed over the network. While this is
# useful information to have, it isn't always used consistently. In particular,
# the saned daemon refuses to make any scanners available that aren't local
# to the machine. While well-intentioned, there are use-cases where this is
# unexpected; for instance in proxies that translate from eSCL/WSD protocols
# to the SANE protocol. Setting this configuration options instructs
# sane-airscan to treat all eSCL/WSD devices as if they were attached locally.
[options]
#discovery = enable
#model = network
#protocol = auto
#ws-discovery = fast
#socket_dir = /var/run
#pretend-local = false
# Configuration of debug facilities
# trace = path ; enables protocol trace and configures output
# ; directory. The directory will be created
# ; automatically. Path may start with tilde (~)
# ; character, which means user home directory
#
# enable = true|false ; enable or disable console logging
# hexdump = true|false ; hex dump all traffic (very verbose!)
[debug]
#trace = ~/airscan/trace
#enable = true
#hexdump = false
# Blacklisting devices
# model = pattern ; Blacklist devices by model name
# name = pattern ; Blacklist devices by network name
# ip = addr[/mask] ; Blacklist devices by IP addresses
#
# Notes
# In model and network names glob-style wildcards can be used
# (i.e., model = "Xerox*")
#
# Network names come from DNS-SD, WS-Discovery doesn't provide this
# information. For filtering by network name to work, Avahi must be
# enabled and device must be discoverable via DNS-SD (not necessarily
# as a scanner, it's enough if WSD scanner is discoverable as a printer
# via DNS-SD).
#
# If netmask is not set, address assumed to be device address,
# not address of the entire subnet
#
# Blacklisting only affects automatic discovery, and doesn't
# affect manually configured devices
[blacklist]
#model = "Xerox*" ; blacklist by model name
#name = "HP*" ; blacklist by network name
#ip = 192.168.0.1 ; blacklist by address
#ip = 192.168.0.0/24 ; blacklist the whole subnet
# dll.conf - Configuration file for the SANE dynamic backend loader
#
# Backends can also be enabled by configuration snippets under the dll.d/
# directory -- third party backends can drop their configuration file in
# this in this directory, named after the backend.
#
# The next line enables the network backend; comment it out if you don't
# need to use a remote SANE scanner over the network -- see sane-net(5)
# and saned(8) for details.
net
abaton
agfafocus
apple
artec
artec_eplus48u
as6e
avision
bh
canon
canon630u
canon_dr
canon_lide70
#canon_pp
cardscan
coolscan
#coolscan2
coolscan3
#dc210
#dc240
#dc25
dell1600n_net
dmc
epjitsu
#epson
epson2
epsonds
#escl
fujitsu
genesys
#gphoto2
gt68xx
hp
hp3500
hp3900
hp4200
hp5400
hp5590
hpaio
hpljm1005
hpsj5s
hs2p
ibm
kodak
kodakaio
kvs1025
kvs20xx
kvs40xx
leo
lexmark
ma1509
magicolor
matsushita
microtek
microtek2
mustek
#mustek_pp
mustek_usb
mustek_usb2
nec
niash
#p5
pie
pieusb
pint
pixma
plustek
#plustek_pp
#pnm
qcam
ricoh
ricoh2
rts8891
s9036
sceptre
sharp
sm3600
sm3840
snapscan
sp15c
#st400
#stv680
tamarack
teco1
teco2
teco3
#test
u12
umax
umax1220u
#umax_pp
v4l
xerox_mfp
