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