Messages in this thread |  | | From | Ricardo Ribalda Delgado <> | Date | Tue, 17 Feb 2015 13:21:24 +0100 | Subject | Re: [PATCH] media/v4l2-ctrls: Always run s_ctrl on volatile ctrls |
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Hello Hans
On Tue, Feb 17, 2015 at 1:03 PM, Hans Verkuil <hverkuil@xs4all.nl> wrote: > Should be done after the 'ctrl == NULL' check.
Good catch. Fixed on v2
> >> >> if (ctrl == NULL) >> continue; >> > > There is one more change that has to be made: setting a volatile control > should never generate a V4L2_EVENT_CTRL_CH_VALUE event since that makes > no sense. The way to prevent that is to ensure that ctrl->has_changed is > always false for volatile controls. The new_to_cur function looks at that > field to decide whether to send an event. > > The documentation should also be updated: that of V4L2_CTRL_FLAG_VOLATILE > (in VIDIOC_QUERYCTRL), and of V4L2_EVENT_CTRL_CH_VALUE.
I can do this also if you want. It has been a while without contributing to media :)
Regards!
> > Regards, > > Hans
-- Ricardo Ribalda
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