From: Robert Jarzmik <robert.jarzmik@free.fr>
To: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Cc: video4linux-list@redhat.com
Subject: Re: [soc-camera] about the y_skip_top parameter
Date: Fri, 05 Sep 2008 22:16:40 +0200 [thread overview]
Message-ID: <87zlmm73h3.fsf@free.fr> (raw)
In-Reply-To: <Pine.LNX.4.64.0809051330390.5482@axis700.grange> (Guennadi Liakhovetski's message of "Fri\, 5 Sep 2008 20\:12\:56 +0200 \(CEST\)")
Guennadi Liakhovetski <g.liakhovetski@gmx.de> writes:
> Hm, AFAIR, the reason was different. I was told, that "all" cameras
> corrupt the first line, that's why that parameter has been introduced. I
> don't think it was related to PXA270. In any case, why don't you just set
> this parameter to whatever you need in your hist driver .add method, for
> example, before calling camera's .init?
Actually I think there is now one camera at least which doesn't ... the mt9m111
:)
Maybe it has to do with the chip internals, which uses these first lines to
make its calculation on white balance, gamma auto correction etc ...
--
Robert
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next prev parent reply other threads:[~2008-09-05 20:17 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-05 10:39 [soc-camera] about the y_skip_top parameter Sascha Hauer
2008-09-05 18:12 ` Guennadi Liakhovetski
2008-09-05 20:16 ` Robert Jarzmik [this message]
2008-09-08 10:34 ` Sascha Hauer
2008-09-09 6:38 ` Guennadi Liakhovetski
2008-09-09 7:19 ` Sascha Hauer
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