kopia lustrzana https://gitlab.com/sane-project/website
69 wiersze
3.0 KiB
HTML
69 wiersze
3.0 KiB
HTML
<!-- received="Wed Aug 5 02:04:53 1998 PDT" -->
|
|
<!-- sent="Wed, 5 Aug 1998 09:06:08 +0000" -->
|
|
<!-- name="Dieter Urban" -->
|
|
<!-- email="dieter.urban@amc.de" -->
|
|
<!-- subject="Mustek ScanExpress Backend" -->
|
|
<!-- id="98Aug5.101210gmt.27792@internet01.amc.de" -->
|
|
<!-- inreplyto="" -->
|
|
<title>sane-devel: Mustek ScanExpress Backend</title>
|
|
<h1>Mustek ScanExpress Backend</h1>
|
|
<b>Dieter Urban</b> (<a href="mailto:dieter.urban@amc.de"><i>dieter.urban@amc.de</i></a>)<br>
|
|
<i>Wed, 5 Aug 1998 09:06:08 +0000</i>
|
|
<p>
|
|
<ul>
|
|
<li> <b>Messages sorted by:</b> <a href="date.html#10">[ date ]</a><a href="index.html#10">[ thread ]</a><a href="subject.html#10">[ subject ]</a><a href="author.html#10">[ author ]</a>
|
|
<!-- next="start" -->
|
|
<li> <b>Next message:</b> <a href="0011.html">Dr. Andreas Bolsch: "Re: Mustek ScanExpress Backend"</a>
|
|
<li> <b>Previous message:</b> <a href="0009.html">Matto Marjanovic: "Re: SANE release 0.74 available"</a>
|
|
<!-- nextthread="start" -->
|
|
<li> <b>Next in thread:</b> <a href="0011.html">Dr. Andreas Bolsch: "Re: Mustek ScanExpress Backend"</a>
|
|
<li> <b>Reply:</b> <a href="0011.html">Dr. Andreas Bolsch: "Re: Mustek ScanExpress Backend"</a>
|
|
<!-- reply="end" -->
|
|
</ul>
|
|
<!-- body="start" -->
|
|
Another time the color skew problem with my mustek 12000 SE.<br>
|
|
I did some tests in the backend code to reduce the latency time due to<br>
|
|
memory allocation but nothing changed.<br>
|
|
<p>
|
|
Does the backend possibly has a bug in fix_line_distance_se() ? What<br>
|
|
happens, if at high resolution the 'lines_per_buffer' (e.g. I got 7<br>
|
|
lines per buffer at 600dpi, SCSI-BUFFER = 64k) is less than actual<br>
|
|
line_distance (16 at 600dpi for 12000 SE) ? <br>
|
|
My understanding is, that lines from the temporary buffer are retrieved<br>
|
|
to fast (allways with the seconed call of fix_line_distance_se). This<br>
|
|
would explain the shift of colors for high resolutions and wide images.<br>
|
|
<p>
|
|
<p>
|
|
# of call to lines lines lines lines<br>
|
|
fix_line_.. skipped retrieved stored saved<br>
|
|
from directly to <br>
|
|
buffer buffer<br>
|
|
<p>
|
|
1 7 7 0 0 0 0 0 0 0 0 0 7<br>
|
|
2 7 1 0 0 0 7 !!! 0 0 0 0 6 7<br>
|
|
3 2 0 0 0 6 7 5 0 0 0 7 7<br>
|
|
4 0 0 0 0 7 7 7 0 0 0 7 7 <br>
|
|
.<br>
|
|
<p>
|
|
(7 lines_per_buffer, line_distance = 0 | 8 | 16)<br>
|
|
(three values each for colors 0 1 2 )<br>
|
|
<p>
|
|
Dieter<br>
|
|
<p>
|
|
<pre>
|
|
--
|
|
Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
|
|
To unsubscribe: echo unsubscribe sane-devel | mail <a href="mailto:majordomo@mostang.com">majordomo@mostang.com</a>
|
|
</pre>
|
|
<!-- body="end" -->
|
|
<p>
|
|
<ul>
|
|
<!-- next="start" -->
|
|
<li> <b>Next message:</b> <a href="0011.html">Dr. Andreas Bolsch: "Re: Mustek ScanExpress Backend"</a>
|
|
<li> <b>Previous message:</b> <a href="0009.html">Matto Marjanovic: "Re: SANE release 0.74 available"</a>
|
|
<!-- nextthread="start" -->
|
|
<li> <b>Next in thread:</b> <a href="0011.html">Dr. Andreas Bolsch: "Re: Mustek ScanExpress Backend"</a>
|
|
<li> <b>Reply:</b> <a href="0011.html">Dr. Andreas Bolsch: "Re: Mustek ScanExpress Backend"</a>
|
|
<!-- reply="end" -->
|
|
</ul>
|