Alessandro Zummo wrote:
> On Sun, 3 Jan 2010 15:14:38 +0100
> Rainer Dorsch <rdorsch at web.de> wrote:
>
>> Are these the areas in epson2.c you are refering to:
>>
>> /*
>> * Make sure that the number of lines is correct for color shuffling:
>> * The shuffling alghorithm produces 2xline_distance lines at the
>> * beginning and the same amount at the end of the scan that are not
>> * useable. If s->params.lines gets negative, 0 lines are reported
>> * back to the frontend.
>> */
>> if (s->hw->color_shuffle) {
>> s->params.lines -= 4 * s->line_distance;
>> if (s->params.lines < 0)
>> s->params.lines = 0;
>>
>> DBG(1, "adjusted params.lines for color_shuffle by %d to
>> %d\n",
>> 4 * s->line_distance, s->params.lines);
>> }
>>
>> [snip]
>
> Those are two of the involved sections. However I did not wrote
> them so I can just hope they work nicely ;)
That code does the wrong thing. The epkowa backend fixed the
s.params->lines calculations in, eh, iscan-1.14.0 (released in 2005).
Search epkowa.c of a recent iscan for "finalise the number of scanlines"
to see what should be done.
Hope this helps,
--
Olaf Meeuwissen, LPIC-2 FLOSS Engineer -- AVASYS Corporation
FSF Associate Member #1962 Help support software freedom
http://www.fsf.org/jf?referrer=1962
