> Hi Hans,
>
> On Tuesday 28 June 2011 17:18:07 Hans Verkuil wrote:
>> Originally no control events would go to the filehandle that called the
>> VIDIOC_S_CTRL/VIDIOC_S_EXT_CTRLS ioctls. This was to prevent a feedback
>> loop.
>>
>> This is now only done if the new V4L2_EVENT_SUB_FL_NO_FEEDBACK flag is
>> set.
>
> What about doing it the other way around ? Most applications won't want
> that
> feedback, you could disable it by default.
I thought about that, but that's harder to explain since that flag would
then suppress an exception to the normal handling of event.
It's easier to say: events are sent to everyone, but if you set this flag,
then we make this exception.
I suspect that most applications do not need to set this flag anyway, only
applications like qv4l2 that create a control panel need it.
Regards,
Hans
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