sane-project-website/old-archive/1999-03/0248.html

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<!-- name="Bernd Schroeder" -->
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<title>sane-devel: Update of microtek2 backend available</title>
<h1>Update of microtek2 backend available</h1>
<b>Bernd Schroeder</b> (<a href="mailto:bernd@aquila.muc.de"><i>bernd@aquila.muc.de</i></a>)<br>
<i>Sat, 27 Mar 1999 18:29:02 +0100</i>
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Hi,<br>
<p>
I have uploaded a new release of the microtek2 backend to<br>
<p>
 <a href="ftp://ftp.muc.de/people/bernds/mtek2/microtek2-pre0.6.270399.tar.gz">ftp://ftp.muc.de/people/bernds/mtek2/microtek2-pre0.6.270399.tar.gz</a> .<br>
<p>
Most important changes:<br>
<p>
- This version addresses the problem with transposed colors on some<br>
  models with Firmware-Version 1.x (for example the X6, X6EL, Phantom 636).<br>
  The problem was/is: For a 24-bit color scan the bytes per scanline (bpl)<br>
  should be 3 * pixels per line (ppl) + 1, if the number of pixels per line<br>
  is odd, but it is actually bpl=3 * ppl + 3. This new version assumes, that<br>
  the image data starts at the "beginning of the scanline + 3 bytes", whereas<br>
  previous versions assumed "beginning of scanline + 2 bytes".<br>
<p>
  However, there are apparently people, who never experienced transposed<br>
  colors. This possibly means, that different models (different FW-versions)<br>
  handle these things different. To include the fix for all models I need<br>
  to know, which models with which FW-version have this problem. So, if<br>
  you have this problem, please send me a mail with the model name, the<br>
  FW-version and, if possible, the model code. The model_code is printed<br>
  to stderr, if 'option dump 1' is set in the microtek2.conf file, and<br>
  the FW-revision is printed with 'cat /proc/scsi/scsi' (at least on Linux).<br>
<p>
  This new release fixes the problem for devices with FW-revision 1.20 only.<br>
<p>
  Note: This is not the problem with the random noise scattered over the image<br>
        after one successful color scan, but the latter should be fixed, too,<br>
        for all FW versions known to me.<br>
<p>
- I have included some preliminary support for a ScanMaker V6USL (really USL,<br>
  not USB). Up to now I have heard from one user, who uses this model on<br>
  an SGI machine. This user has a problem, but I assume that this problem<br>
  is SCSI related. If anybody has such a model, you could give it a try,<br>
  and tell me what happens. This model uses a data format, that appears<br>
  for the first time, so the code is partially untested.<br>
<p>
Bernd<br>
<p>
<pre>
-- 
Bernd Schroeder 
Email: <a href="mailto:bernd@aquila.muc.de">mailto:bernd@aquila.muc.de</a>
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