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109 wiersze
4.5 KiB
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<!-- received="Mon Aug 31 08:09:06 1998 PDT" -->
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<!-- sent="Mon, 31 Aug 1998 02:05:39 +0300" -->
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<!-- name="Milon Firikis" -->
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<!-- email="milonf@ariadne-t.gr" -->
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<!-- subject="Re: Windows port" -->
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<!-- inreplyto="Windows port" -->
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<title>sane-devel: Re: Windows port</title>
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<h1>Re: Windows port</h1>
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<b>Milon Firikis</b> (<a href="mailto:milonf@ariadne-t.gr"><i>milonf@ariadne-t.gr</i></a>)<br>
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<i>Mon, 31 Aug 1998 02:05:39 +0300</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#153">[ date ]</a><a href="index.html#153">[ thread ]</a><a href="subject.html#153">[ subject ]</a><a href="author.html#153">[ author ]</a>
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<!-- next="start" -->
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<li> <b>Next message:</b> <a href="0154.html">Marten Feldtmann: "Re: Windows port"</a>
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<li> <b>Previous message:</b> <a href="0152.html">Andreas Cittlau: "Mustek 600 II CD - y limit"</a>
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<li> <b>Maybe in reply to:</b> <a href="0130.html">Arun Tanksali: "Windows port"</a>
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</ul>
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<!-- body="start" -->
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Ian Grant wrote:<br>
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<i>> </i><br>
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<i>> Rather than port SANE to Windows, couldn't someone write a TWAIN driver</i><br>
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<i>> for Windows that talks to saned? This would allow people to use their free</i><br>
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<i>> Windows OCR s/w etc that comes with the scanner, provided they have a</i><br>
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<i>> Windows box on their network. It would also enable their Windows machines</i><br>
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<i>> to scan from any scanner on their network.</i><br>
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<i>> </i><br>
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<i>> Ian</i><br>
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<i>> </i><br>
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<p>
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The above post reflects my opinions almost 100 percent.<br>
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<p>
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Some spots other people missed.<br>
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<p>
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* I don't care if somebody wants to port anything to anywhere since he<br>
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is doing the job and not me.<br>
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<p>
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* Porting issues.<br>
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<p>
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SCSI<br>
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----<br>
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SANE uses a lot the generic SCSI interface. If you miss this you have to<br>
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do one of the followings:<br>
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a) write a generic SCSI driver (with UNIX semantics) for windows<br>
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systems. (ala solaris)<br>
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which means that<br>
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i) you introduce new instabilities to the system.<br>
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ii) you have to maintain different drivers for various Windows<br>
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versions.<br>
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b) implement the sane_scsi_* commands in sane_scsi.c The place is<br>
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already #ifdefed a lot, so some windows #ifdefs won't heart so much.<br>
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<p>
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INTERFACE<br>
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---------<br>
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<p>
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Get prepared to code a lot of networking stuff since GTK does not have a<br>
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native win32 port so you can't use xscanimage to scan, though plain<br>
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scanimage would do it fine I guess. Most of that code should be the<br>
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TWAIN interface that it is so badly wanted from most of us, in order to<br>
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get working Windows applications scanning. While you are there you could<br>
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also code the net middleware that Ian Grant is talking about.<br>
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<p>
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UNIXisms<br>
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--------<br>
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<p>
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Some (most) of the SANE backends (drivers) are using pipe() and fork()<br>
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in order to use asynchronous I/O. I have already stated that I am<br>
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against such UNIXisms in a backend's code, but since I can't code<br>
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something better I am keeping my mouth shut. The guy that he is<br>
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maintaining the OS/2 port of the SANE had an interesting idea about some<br>
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platform independent threading. I certainly believe that a Windows Port<br>
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is a good thing because it will address to these matters in a (I hope)<br>
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platform independent way, at least as much as sane_scsi.c is.<br>
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<p>
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It is also plausible to use the cygnus solution and leave the fork()<br>
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pipe() and other unix stuff as it is. It is ought to work since these<br>
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guys at cygnus have ported more difficult stuff than SANE which I must<br>
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say is almost ANSI compatible.<br>
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<p>
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<p>
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All in all:<br>
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I believe that a windows port will be a good thing for SANE, and that it<br>
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is also feasible for somebody to do it in a non infinite period of time.<br>
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Other than the difficulties I already mentioned, I don't think there<br>
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are any other obstacles in the way to a windows port. Am I missing<br>
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anything?<br>
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<p>
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<p>
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Milon Firikis<br>
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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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To unsubscribe: echo unsubscribe sane-devel | mail <a href="mailto:majordomo@mostang.com">majordomo@mostang.com</a>
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</pre>
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<!-- body="end" -->
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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="0154.html">Marten Feldtmann: "Re: Windows port"</a>
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<li> <b>Previous message:</b> <a href="0152.html">Andreas Cittlau: "Mustek 600 II CD - y limit"</a>
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<li> <b>Maybe in reply to:</b> <a href="0130.html">Arun Tanksali: "Windows port"</a>
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<!-- nextthread="start" -->
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<!-- reply="end" -->
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</ul>
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