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<TITLE>sane-devel: Re: newbie tryin to use SANE w/ webcam</TITLE>
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<H1>Re: newbie tryin to use SANE w/ webcam</H1>
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<STRONG>From:</STRONG> Henning Meier-Geinitz (<A HREF="mailto:hmg-ml@gmx.de?Subject=Re:%20newbie%20tryin%20to%20use%20SANE%20w/%20webcam&In-Reply-To=&lt;20000917194231.A397@hmg1.vortex.swb.de&gt;"><EM>hmg-ml@gmx.de</EM></A>)<BR>
<STRONG>Date:</STRONG> Sun Sep 17 2000 - 10:42:31 PDT
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On Sun, Sep 17, 2000 at 09:31:02AM -0400, Keith Warno wrote:
<BR>
<EM>&gt; I grabbed SANE 1.0.3 yesterday and I must say the compile process
</EM><BR>
<EM>&gt; produced a LOT of warnings, mostly about unused variables and
</EM><BR>
<EM>&gt; comparisons between signed and unsigned.
</EM><BR>
<P>This isn't nice but it isn't not unusual either. If you want to see some
<BR>
more warnings try ./configure --enable-warnings :^) I try to fix the
<BR>
warnings in my backend and the global parts of sane I understand. The rest
<BR>
must be done by the other backend maintainers. But not all backends are
<BR>
maintained, so ...
<BR>
<P><EM>&gt; egcs-2.91.66 19990314/Linux (egcs-1.1.2 release)&quot;). The compile
</EM><BR>
<EM>&gt; process was also pretty slow; my machine is lightly loaded and
</EM><BR>
<EM>&gt; relatively fast (pIII 500, 256MB RAM, blah blah).
</EM><BR>
<P>There are many different backends to compile and link ...
<BR>
If you know what backend(s) you want to use you can change the
<BR>
&quot;PRELOADABLE_BACKENDS=&quot; line in backend/Makefile to only include the
<BR>
backends you need.
<BR>
<P><EM>&gt; On to the real issue. I have an old US Robotics Big Picture
</EM><BR>
<EM>&gt; camera. This thing comes with a video capture board made by
</EM><BR>
<EM>&gt; Hauppaugue Computer Works, the Win/TV people. The board is the
</EM><BR>
<EM>&gt; &quot;Brooktree Bt848 (rev 17)&quot;. The kernel (2.2.17) has the bttv built
</EM><BR>
<EM>&gt; in but I haven't been able to get the camera to do anything at all
</EM><BR>
<EM>&gt; with SANE, or with any programs for that matter.
</EM><BR>
<P>I don't have much experience with cameras but I think if your camera isn't
<BR>
supported by the kernel you won't have success with SANE. SANE has direct
<BR>
support for some cameras (see README) but the rest is supported by the v4l
<BR>
backend which is an interface to the Video for Linux kernel driver. So if
<BR>
your camera doesn't work with e.g. KWinTv and Video for Linux you probably
<BR>
won't have success with SANE.
<BR>
<P><EM>&gt; I tried using xcam but it gives me nothing. I would have expected
</EM><BR>
<EM>&gt; the capture board to show up in xcam's device list but it
</EM><BR>
<EM>&gt; doesn't. It's no where to be found.
</EM><BR>
<P>Is it found by the kernel?
<BR>
<P><EM>&gt; xcam seems to have a few issues. It's segfaulted on me a number of
</EM><BR>
<EM>&gt; times. Namely when attempting to change stuff in the Preferences
</EM><BR>
<EM>&gt; menu (like &quot;Show Advanced Options&quot;). Maybe my gtk version is
</EM><BR>
<EM>&gt; flaky? I have both glib and gtk version 1.2.8. :/
</EM><BR>
<P>I don't think that gtk is the reason. Since 2 1/2 years nobody touched xcam
<BR>
and it's without a maintainer. Would you like to maintain this program?
<BR>
<P>Bye,
<BR>
&nbsp;&nbsp;Henning
<BR>
<P><PRE>
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