On 2001.06.26 23:56:28 +0200 Trent Piepho wrote:
> On Wed, 27 Jun 2001, Alan McIvor wrote:
> > after using VIDIOCSPICT to alter the contrast was so poor.
> >
> > It is better to use is 180/254 (the ratio of the default register
> values)
> > than 201/283 which is an approximation to the range in percent.
>
> I did this long ago, changed the ratio to 90/127 (same as 180/254..),
> from
> 201/237. As far as I can tell, 201/237 is just flat wrong. I'm pretty
> sure I
> mentioned it a few times, but it seems to have fallen on deaf ears.
>
> BTW, how about adding an ioctl to READ the brightness, saturation, color,
> etc.
> values that are currently being used.
Huh? How about VIDIOCGPICT? It has been part of the v4l spec as long as I
can remember?
Doesn't bttv implement this?
Jeroen
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