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<TITLE>sane-devel: Re: TODO list</TITLE>
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<META NAME="Author" CONTENT="Henning Meier-Geinitz (hmg-ml@gmx.de)">
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<META NAME="Subject" CONTENT="Re: TODO list">
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<H1>Re: TODO list</H1>
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<!-- received="Tue Nov 7 12:30:54 2000" -->
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<!-- name="Henning Meier-Geinitz" -->
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20TODO%20list&In-Reply-To=<20001107204013.B6747@vortex.swb.de>"><EM>hmg-ml@gmx.de</EM></A>)<BR>
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<STRONG>Date:</STRONG> Tue Nov 07 2000 - 11:40:13 PST
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<P>
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<LI><STRONG>Next message:</STRONG> <A HREF="0127.html">Karsten Festag: "Re: New backends for SANE 1.0.4"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0125.html">Henning Meier-Geinitz: "Re: New backends for SANE 1.0.4"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0114.html">kwlee: "Re: TODO list"</A>
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<LI><STRONG>Next in thread:</STRONG> <A HREF="0131.html">kwlee: "Re: TODO list"</A>
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<P>
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Hi,
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<BR>
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<P>On Tue, Nov 07, 2000 at 11:38:46AM +0800, kwlee wrote:
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<BR>
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<EM>> .Warmup-time: This is almost necessary for most entry level scanners to
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</EM><BR>
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<EM>> warmup
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</EM><BR>
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<EM>> the lamp, in driver level, must have API to report the warmup remain
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</EM><BR>
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<EM>> times, i don't
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</EM><BR>
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<EM>> understand why people under SANE never discuss about that ? this is
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</EM><BR>
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<EM>> pretty common
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</EM><BR>
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<EM>> under Windows.
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</EM><BR>
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<P>I never had this problem so ... If I understand this correctly you
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<BR>
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want to have some sort of mechanism to send messages from the backend
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<BR>
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to the frontend, right? This isn't possible with SANE 1 so it must
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<BR>
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wait for SANE 2. I have added an entry to the LEVEL2 file about this.
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<BR>
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However, I don't know how this could be implemented for command line
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<BR>
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frontends ...
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<BR>
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<P>With the current SANE 1: I don't know if defining an option as
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<BR>
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SANE_CAP_SOFT_DETECT (without any of the _SELECT caps) works. Is this
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<BR>
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warm-up time needed once per scan or only after turning on the scanner?
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<BR>
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If it's only needed after startup, maybe you can add an option which
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<BR>
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says something like "scanner will be ready at <time>" and remove the
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<BR>
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option (or use the string "Scanner is ready now") after the time is
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<BR>
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over.
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<BR>
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<P><EM>> H/W JPEG scanning: simple! the scanner ouput jpeg image without any effort
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</EM><BR>
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<EM>> of driver,
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</EM><BR>
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<EM>> the only effort is that we need to add jpeg
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</EM><BR>
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<EM>> file header to this raw
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</EM><BR>
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<EM>> image data.
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</EM><BR>
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<P>Additional frame types are also an issue for SANE 2 (the standard has
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<BR>
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to be changed for this).
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<BR>
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<P><EM>> S/W JPEG decompress: this is "run time" decompress, you can never predict
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</EM><BR>
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<EM>> the exact
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</EM><BR>
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<EM>> data(after decompress) you will, so many
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</EM><BR>
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<EM>> extra efforts need to
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</EM><BR>
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<EM>> implement.
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</EM><BR>
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<P>I'm not sure if I understood this. You want to decompress the jpeg
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<BR>
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data coming from the scanner in the backend (to solve the problem of
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<BR>
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missing jpeg-support in SANE)? So this is a problem of implementing
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<BR>
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the function in the backend?
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<BR>
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<P><EM>> yep! <A HREF="http://www.abaforum.es/martim/bird/otlinux.htm">http://www.abaforum.es/martim/bird/otlinux.htm</A>
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</EM><BR>
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<P>Ok. I added this backend to the TODO-list.
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<BR>
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<P>If you like you can make a viceo.desc file which can be included in
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<BR>
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the SANE distribution. After SANE 1.0.4 is finished, the SANE website
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<BR>
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would show an entry for your backend in this case. Otherwise I would
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<BR>
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make an entry in the projects file.
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<BR>
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<P>I downloaded your backend for a quick look. I had some problems to
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<BR>
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find the Readme. It looks like the file Readme in readme.tar.gz is
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<BR>
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itsself a tar file (which includes Todo once again).
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<BR>
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<P>Bye,
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<BR>
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Henning
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<BR>
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<P><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?Subject=Re:%20TODO%20list&In-Reply-To=<20001107204013.B6747@vortex.swb.de>">majordomo@mostang.com</A>
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</PRE>
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<!-- next="start" -->
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<LI><STRONG>Next message:</STRONG> <A HREF="0127.html">Karsten Festag: "Re: New backends for SANE 1.0.4"</A>
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<LI><STRONG>Previous message:</STRONG> <A HREF="0125.html">Henning Meier-Geinitz: "Re: New backends for SANE 1.0.4"</A>
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<LI><STRONG>In reply to:</STRONG> <A HREF="0114.html">kwlee: "Re: TODO list"</A>
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<EM>
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This archive was generated by <A HREF="http://www.hypermail.org/">hypermail 2b29</A>
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: <EM>Tue Nov 07 2000 - 12:33:04 PST</EM>
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