On Sun, 28 Feb 2010 19:38:14 +0100
Jean-Francois Moine <moin...@free.fr> wrote:

> On Sat, 27 Feb 2010 21:20:22 +0100
> Antonio Ospite <osp...@studenti.unina.it> wrote:
> 
> > Exposure is now a u16 value, both MSB and LSB are set, but values in
> > the v4l2 control are limited to the interval [0,506] as 0x01fa (506)
> > is the maximum observed value with AEC enabled.
>       [snip]
> >         .type    = V4L2_CTRL_TYPE_INTEGER,
> >         .name    = "Exposure",
> >         .minimum = 0,
> > -       .maximum = 255,
> > +       .maximum = 506,
> >         .step    = 1,
> >  #define EXPO_DEF 120
> >         .default_value = EXPO_DEF,
> 
> Hi Antonio,
> 
> Do we need a so high precision for the exposure? Just setting the
> maximum value to 253 should solve the problem.
>

JF, the intent here is to cover all the range of values available in
Auto Exposure mode too, doesn't this make sense to you?

I could set .maximum to 253 to limit the "UI" control precision but then
I should use 2*value when setting the registers in order to cover the
actual max value, this looks a little unclean.

Anyhow, let me know what you prefer, I have no strong feelings on that.
If you want to save a byte, I'll agree.

Regards,
   Antonio

-- 
Antonio Ospite
http://ao2.it

PGP public key ID: 0x4553B001

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