Re: Reading/writing controls from different classes in a single VIDIOC_[GS]_EXT_CTRLS call

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On Friday, December 17, 2010 17:17:05 Laurent Pinchart wrote:
> Hi Hans,
> 
> I've recently run into an issue when porting a sensor driver to the control 
> framework.
> 
> A userspace application using that driver using VIDIOC_G_EXT_CTRLS to retrieve 
> the value of a bunch of controls in a single call. Those controls don't belong 
> to the same class, and the application started failing.
> 
> What's the rationale behind forbidding that ?

Which driver? The control framework doesn't have that limitation anymore.
Originally the API had that limitation, mostly to reduce driver complexity,
but that limitation is lifted in the control framework.

Regards,

	Hans

-- 
Hans Verkuil - video4linux developer - sponsored by Cisco
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