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<!-- received="Sat May 1 12:30:52 1999 PDT" -->
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<!-- sent="Sat, 01 May 1999 20:34:59 +0200" -->
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<!-- name="Oliver Rauch" -->
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<!-- email="oliver.rauch@Wolfsburg.DE" -->
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<!-- subject="Re: May sane_init fail?" -->
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<!-- inreplyto="May sane_init fail?" -->
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<title>sane-devel: Re: May sane_init fail?</title>
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<h1>Re: May sane_init fail?</h1>
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<b>Oliver Rauch</b> (<a href="mailto:oliver.rauch@Wolfsburg.DE"><i>oliver.rauch@Wolfsburg.DE</i></a>)<br>
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<i>Sat, 01 May 1999 20:34:59 +0200</i>
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<p>
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<ul>
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<li> <b>Messages sorted by:</b> <a href="date.html#5">[ date ]</a><a href="index.html#5">[ thread ]</a><a href="subject.html#5">[ subject ]</a><a href="author.html#5">[ author ]</a>
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<li> <b>Next message:</b> <a href="0006.html">ekaiser: "probs with AGFA Snapscan 600"</a>
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<li> <b>Previous message:</b> <a href="0004.html">Oliver Rauch: "Re: xsane default sizes"</a>
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</ul>
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Ingo Wilken wrote:<br>
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<p>
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<i>> > Anyway. I'm now writing a patch to sane 1.0.1 with my suggested</i><br>
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<i>> > change. I suggest three valid responses from sane_init():</i><br>
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<i>> > SANE_STATUS_GOOD - Success</i><br>
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<i>> > SANE_STATUS_NO_MEM - Ran out of memory</i><br>
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<i>> > SANE_STATUS_UNSUPPORTED - Not supported on this machines current</i><br>
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<i>> > configuration</i><br>
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<i>> > Would there be need for more return values?</i><br>
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<i>></i><br>
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<i>> What's the suggested return values for a backend/SANE version mismatch?</i><br>
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<i>> I'm currently using SANE_STATUS_UNSUPPORTED (seems logical), but</i><br>
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<i>> SANE_STATUS_INVAL could be used too.</i><br>
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<i>></i><br>
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<i>> BTW, it seems that almost no backend checks the version number, and most</i><br>
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<i>> backends distributed with 1.0.x are listed as version 0.something in the</i><br>
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<i>> "supported scanners" webpage - not good.</i><br>
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<i>></i><br>
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<p>
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Hi Ingo,<br>
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<p>
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the frontends do have to chacke the version numbers, a backend is not able to do<br>
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<p>
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a right test for it.<br>
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<p>
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xsane does test it and if the backend responds with a sane major version != 1,<br>
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xsane aborts with an error message!<br>
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<p>
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Bye<br>
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Oliver<br>
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<p>
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<p>
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<pre>
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--
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EMAIL: <a href="mailto:Oliver.Rauch@Wolfsburg.DE">Oliver.Rauch@Wolfsburg.DE</a>
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WWW: <a href="http://www.wolfsburg.de/~rauch">http://www.wolfsburg.de/~rauch</a>
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<p>
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<p>
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<p>
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<p>
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<pre>
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--
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Source code, list archive, and docs: <a href="http://www.mostang.com/sane/">http://www.mostang.com/sane/</a>
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</pre>
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<p>
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<ul>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0006.html">ekaiser: "probs with AGFA Snapscan 600"</a>
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<li> <b>Previous message:</b> <a href="0004.html">Oliver Rauch: "Re: xsane default sizes"</a>
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