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<!-- name="Svend Daugaard Pedersen" -->
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<title>sane-devel: SnapScan backend</title>
<h1>SnapScan backend</h1>
<b>Svend Daugaard Pedersen</b> (<a href="mailto:sdp@vip.cybercity.dk"><i>sdp@vip.cybercity.dk</i></a>)<br>
<i>Sat, 13 Mar 1999 16:40:08 +0100</i>
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<li> <b>Next message:</b> <a href="0130.html">Kaz Sasayama: "Re: Epson backend"</a>
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I have during my port of the SnapScan backend (v0.6) to the<br>
Amiga found two errors.<br>
<p>
The first error is that there seems to be a difference in the<br>
number of lines returned by sane_get_parameters and the number<br>
of lines actually send during scanning. In a color scanning,<br>
for example the number returned by sane_get_parameters was<br>
682, but the actual number of lines was 683 (I have the<br>
debugging output).<br>
<p>
For B/W scanning (LineArt) it is worse. The number returned<br>
by sane_get_parameters was 590 (this is approximately the<br>
correct line number for that scanning), but the actual number<br>
of lines was 197 (note that 3 times 197 is 591 which is again<br>
one more than returned by sane_get_parameters).<br>
<p>
The second error is also in sane_get_parameters. The format<br>
field is not set if you are scanning LineArt.<br>
<p>
regards<br>
<p>
Svend Daugaard Pedersen<br>
<p>
<p>
<pre>
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<li> <b>Next message:</b> <a href="0130.html">Kaz Sasayama: "Re: Epson backend"</a>
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