[sane-devel] epson2 problem

m. allan noah kitno455 at gmail.com
Tue Aug 18 13:40:05 UTC 2009


2009/8/17 Kåre Särs <kare.sars at iki.fi>:
> Hi,
>
> In libksane I try to figure out a suitable scanning resolution by starting with
> 100 DPI, increasing the DPI with 100 until I reach 300 pixels height or width.
> The problem with epson2 is that the "pixels_per_line" parameter returned by
> sane_get_parameters() is always 0. This means that the hard-coded limit of 900
> DPI is always reached (or the closest one).
>
> From the standard I understood that the value would be "best-effort estimates"
> before scan_start().

Yes- the backend should make an attempt to at least guess the width of
the scan prior to sane_start(). Does the original epson backend do
this?

allan
-- 
"The truth is an offense, but not a sin"



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