linux-kernel - Re: [PATCH v3 3/7] Documentation: media: Document V4L2_CTRL_TYPE

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Date:   Thu, 12 Sep 2019 12:51:51 +0200
From:   Ricardo Ribalda Delgado <ribalda@...nel.org>
To:     Jacopo Mondi <jacopo@...ndi.org>
Cc:     Philipp Zabel <p.zabel@...gutronix.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Hans Verkuil <hverkuil-cisco@...all.nl>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        linux-media <linux-media@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 3/7] Documentation: media: Document V4L2_CTRL_TYPE_AREA

HI Jacopo

(Sorry for the late reply, I have been in holidays plus with plenty of
family matters)

On Mon, Aug 26, 2019 at 9:39 AM Jacopo Mondi <jacopo@...ndi.org> wrote:
>
> Hi Ricardo,
>
> On Fri, Aug 23, 2019 at 02:37:33PM +0200, Ricardo Ribalda Delgado wrote:
> > A struct v4l2_area containing the width and the height of a rectangular
> > area.
> >
> > Signed-off-by: Ricardo Ribalda Delgado <ribalda@...nel.org>
> > Suggested-by: Hans Verkuil <hverkuil-cisco@...all.nl>
> > ---
> >  Documentation/media/uapi/v4l/vidioc-queryctrl.rst | 6 ++++++
> >  1 file changed, 6 insertions(+)
> >
> > diff --git a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
> > index a3d56ffbf4cc..c09d06ef2b08 100644
> > --- a/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
> > +++ b/Documentation/media/uapi/v4l/vidioc-queryctrl.rst
> > @@ -443,6 +443,12 @@ See also the examples in :ref:`control`.
> >        - n/a
> >        - A struct :c:type:`v4l2_ctrl_mpeg2_quantization`, containing MPEG-2
> >       quantization matrices for stateless video decoders.
> > +    * - ``V4L2_CTRL_TYPE_AREA``
> > +      - n/a
>
> Can an area be negative ?
> I would set these fields to ">= 0" ">= 1" and ">= 0" respectively.
>

Dont min, max and step only make sense for integer controls?

> Thanks
>    j
>
> > +      - n/a
> > +      - n/a
> > +      - A struct :c:type:`v4l2_area`, containing the width and the height
> > +        of a rectangular area.
> >      * - ``V4L2_CTRL_TYPE_H264_SPS``
> >        - n/a
> >        - n/a
> > --
> > 2.23.0.rc1
> >