[sane-devel] ESCL test

Ralph Little skelband at gmail.com
Tue Jan 28 20:41:46 GMT 2020

My emailer garbled that. Here it is as an attachment.
Hopefully, this will be better.


On Tue, Jan 28, 2020 at 12:22 PM Ralph Little <skelband at gmail.com> wrote:

> Hi,
> I finally got around to testing the new escl backend with my HP OfficeJet
> 6978.
> It does appear to be supported on two ports, one encrypted:
> device `escl:' is a ESCL HP-OfficeJet-6978 SSL
> flatbed scanner
> device `escl:' is a ESCL HP-OfficeJet-6978 flatbed
> scanner
> Preview and higher resolution scans are OK.
> However, there appears to be something squiffy about the geometry options.
> I cannot get a full sheet scan.
> This is what I get from scanimage as regards the available options:
> Options specific to device `escl:':
>   Scan mode:
>     --mode Gray|Color [Gray]
>         Selects the scan mode (e.g., lineart, monochrome, or color).
>     --resolution 75|100|200|300|600|1200dpi [75]
>         Sets the resolution of the scanned image.
>     --preview[=(yes|no)] [no]
>         Request a preview-quality scan.
>     --preview-in-gray[=(yes|no)] [no]
>         Request that all previews are done in monochrome mode.  On a
>         three-pass scanner this cuts down the number of passes to one and
> on a
>         one-pass scanner, it reduces the memory requirements and scan-time
> of
>         the preview.
>   Geometry:
>     -l 0..0.0122375pel (in steps of 1.52588e-05) [0.000244141]
>         Top-left x position of scan area.
>     -t 0..0.0156708pel (in steps of 1.52588e-05) [0.000534058]
>         Top-left y position of scan area.
>     -x 0..0.0119934pel (in steps of 1.52588e-05) [0.0386658]
>         Width of scan-area.
>     -y 0..0.0151367pel (in steps of 1.52588e-05) [0.0529785]
>         Height of scan-area.
> Using the current PPA from Rolf as of today, which is probably gonna be *git
> commit 1942c5fd.*
> Cheers,
> Ralph
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