[v7,1/7] media: v4l2_ctrl: Add V4L2_CTRL_TYPE_RECT

Message ID 20220628075705.2278044-2-yunkec@google.com (mailing list archive)
State Superseded
Headers
Series media: Implement UVC v1.5 ROI |

Commit Message

Yunke Cao June 28, 2022, 7:56 a.m. UTC
  Add p_rect to struct v4l2_ext_control with basic support in
v4l2-ctrls.

Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Signed-off-by: Yunke Cao <yunkec@google.com>
---
 .../media/v4l/vidioc-g-ext-ctrls.rst          |  4 ++++
 .../media/videodev2.h.rst.exceptions          |  1 +
 drivers/media/v4l2-core/v4l2-ctrls-core.c     | 20 +++++++++++++++++++
 include/media/v4l2-ctrls.h                    |  2 ++
 include/uapi/linux/videodev2.h                |  2 ++
 5 files changed, 29 insertions(+)
  

Comments

Laurent Pinchart Aug. 24, 2022, 8:40 a.m. UTC | #1
Hi Yunke,

Thank you for the patch.

On Tue, Jun 28, 2022 at 04:56:59PM +0900, Yunke Cao wrote:
> Add p_rect to struct v4l2_ext_control with basic support in
> v4l2-ctrls.

This looks good to me, so

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

I'm no expert on the V4L2 control framework though, a review from Hans
would be useful.

> Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
> Signed-off-by: Yunke Cao <yunkec@google.com>
> ---
>  .../media/v4l/vidioc-g-ext-ctrls.rst          |  4 ++++
>  .../media/videodev2.h.rst.exceptions          |  1 +
>  drivers/media/v4l2-core/v4l2-ctrls-core.c     | 20 +++++++++++++++++++
>  include/media/v4l2-ctrls.h                    |  2 ++
>  include/uapi/linux/videodev2.h                |  2 ++
>  5 files changed, 29 insertions(+)
> 
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> index 29971a45a2d4..7473baa4e977 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> @@ -189,6 +189,10 @@ still cause this situation.
>        - ``p_area``
>        - A pointer to a struct :c:type:`v4l2_area`. Valid if this control is
>          of type ``V4L2_CTRL_TYPE_AREA``.
> +    * - struct :c:type:`v4l2_rect` *
> +      - ``p_rect``
> +      - A pointer to a struct :c:type:`v4l2_rect`. Valid if this control is
> +        of type ``V4L2_CTRL_TYPE_RECT``.
>      * - struct :c:type:`v4l2_ctrl_h264_sps` *
>        - ``p_h264_sps``
>        - A pointer to a struct :c:type:`v4l2_ctrl_h264_sps`. Valid if this control is
> diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> index 9cbb7a0c354a..7b423475281d 100644
> --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> @@ -147,6 +147,7 @@ replace symbol V4L2_CTRL_TYPE_HEVC_SPS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_HEVC_PPS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_AREA :c:type:`v4l2_ctrl_type`
> +replace symbol V4L2_CTRL_TYPE_RECT :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_FWHT_PARAMS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_VP8_FRAME :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR :c:type:`v4l2_ctrl_type`
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> index 949c1884d9c1..35d43ba650db 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> @@ -84,6 +84,11 @@ static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
>  		return ptr1.p_u16[idx] == ptr2.p_u16[idx];
>  	case V4L2_CTRL_TYPE_U32:
>  		return ptr1.p_u32[idx] == ptr2.p_u32[idx];
> +	case V4L2_CTRL_TYPE_RECT:
> +		return ptr1.p_rect->top == ptr2.p_rect->top &&
> +		       ptr1.p_rect->left == ptr2.p_rect->left &&
> +		       ptr1.p_rect->height == ptr2.p_rect->height &&
> +		       ptr1.p_rect->width == ptr2.p_rect->width;
>  	default:
>  		if (ctrl->is_int)
>  			return ptr1.p_s32[idx] == ptr2.p_s32[idx];
> @@ -307,6 +312,11 @@ static void std_log(const struct v4l2_ctrl *ctrl)
>  	case V4L2_CTRL_TYPE_VP9_FRAME:
>  		pr_cont("VP9_FRAME");
>  		break;
> +	case V4L2_CTRL_TYPE_RECT:
> +		pr_cont("%ux%u@%dx%d",
> +			ptr.p_rect->width, ptr.p_rect->height,
> +			ptr.p_rect->left, ptr.p_rect->top);
> +		break;
>  	default:
>  		pr_cont("unknown type %d", ctrl->type);
>  		break;
> @@ -525,6 +535,7 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
>  	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
>  	struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
>  	struct v4l2_area *area;
> +	struct v4l2_rect *rect;
>  	void *p = ptr.p + idx * ctrl->elem_size;
>  	unsigned int i;
>  
> @@ -888,6 +899,12 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
>  			return -EINVAL;
>  		break;
>  
> +	case V4L2_CTRL_TYPE_RECT:
> +		rect = p;
> +		if (!rect->width || !rect->height)
> +			return -EINVAL;
> +		break;
> +
>  	default:
>  		return -EINVAL;
>  	}
> @@ -1455,6 +1472,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
>  	case V4L2_CTRL_TYPE_AREA:
>  		elem_size = sizeof(struct v4l2_area);
>  		break;
> +	case V4L2_CTRL_TYPE_RECT:
> +		elem_size = sizeof(struct v4l2_rect);
> +		break;
>  	default:
>  		if (type < V4L2_CTRL_COMPOUND_TYPES)
>  			elem_size = sizeof(s32);
> diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
> index b3ce438f1329..919e104de50b 100644
> --- a/include/media/v4l2-ctrls.h
> +++ b/include/media/v4l2-ctrls.h
> @@ -58,6 +58,7 @@ struct video_device;
>   * @p_hdr10_cll:		Pointer to an HDR10 Content Light Level structure.
>   * @p_hdr10_mastering:		Pointer to an HDR10 Mastering Display structure.
>   * @p_area:			Pointer to an area.
> + * @p_rect:			Pointer to a rectangle.
>   * @p:				Pointer to a compound value.
>   * @p_const:			Pointer to a constant compound value.
>   */
> @@ -87,6 +88,7 @@ union v4l2_ctrl_ptr {
>  	struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll;
>  	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
>  	struct v4l2_area *p_area;
> +	struct v4l2_rect *p_rect;
>  	void *p;
>  	const void *p_const;
>  };
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 343b95107fce..2e36bb610ea6 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1754,6 +1754,7 @@ struct v4l2_ext_control {
>  		__u16 __user *p_u16;
>  		__u32 __user *p_u32;
>  		struct v4l2_area __user *p_area;
> +		struct v4l2_rect __user *p_rect;
>  		struct v4l2_ctrl_h264_sps __user *p_h264_sps;
>  		struct v4l2_ctrl_h264_pps *p_h264_pps;
>  		struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
> @@ -1813,6 +1814,7 @@ enum v4l2_ctrl_type {
>  	V4L2_CTRL_TYPE_U16	     = 0x0101,
>  	V4L2_CTRL_TYPE_U32	     = 0x0102,
>  	V4L2_CTRL_TYPE_AREA          = 0x0106,
> +	V4L2_CTRL_TYPE_RECT	     = 0x0107,
>  
>  	V4L2_CTRL_TYPE_HDR10_CLL_INFO		= 0x0110,
>  	V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY	= 0x0111,
  
Hans Verkuil Aug. 24, 2022, 8:50 a.m. UTC | #2
Hi Yunke,

You will need to rebase this since some of the v4l2-ctrl internals
have changed.

On 28/06/2022 09:56, Yunke Cao wrote:
> Add p_rect to struct v4l2_ext_control with basic support in
> v4l2-ctrls.
> 
> Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
> Signed-off-by: Yunke Cao <yunkec@google.com>
> ---
>  .../media/v4l/vidioc-g-ext-ctrls.rst          |  4 ++++
>  .../media/videodev2.h.rst.exceptions          |  1 +
>  drivers/media/v4l2-core/v4l2-ctrls-core.c     | 20 +++++++++++++++++++
>  include/media/v4l2-ctrls.h                    |  2 ++
>  include/uapi/linux/videodev2.h                |  2 ++
>  5 files changed, 29 insertions(+)
> 
> diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> index 29971a45a2d4..7473baa4e977 100644
> --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> @@ -189,6 +189,10 @@ still cause this situation.
>        - ``p_area``
>        - A pointer to a struct :c:type:`v4l2_area`. Valid if this control is
>          of type ``V4L2_CTRL_TYPE_AREA``.
> +    * - struct :c:type:`v4l2_rect` *
> +      - ``p_rect``
> +      - A pointer to a struct :c:type:`v4l2_rect`. Valid if this control is
> +        of type ``V4L2_CTRL_TYPE_RECT``.
>      * - struct :c:type:`v4l2_ctrl_h264_sps` *
>        - ``p_h264_sps``
>        - A pointer to a struct :c:type:`v4l2_ctrl_h264_sps`. Valid if this control is

You also need to update Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst.

> diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> index 9cbb7a0c354a..7b423475281d 100644
> --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> @@ -147,6 +147,7 @@ replace symbol V4L2_CTRL_TYPE_HEVC_SPS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_HEVC_PPS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_AREA :c:type:`v4l2_ctrl_type`
> +replace symbol V4L2_CTRL_TYPE_RECT :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_FWHT_PARAMS :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_VP8_FRAME :c:type:`v4l2_ctrl_type`
>  replace symbol V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR :c:type:`v4l2_ctrl_type`
> diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> index 949c1884d9c1..35d43ba650db 100644
> --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
> +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> @@ -84,6 +84,11 @@ static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
>  		return ptr1.p_u16[idx] == ptr2.p_u16[idx];
>  	case V4L2_CTRL_TYPE_U32:
>  		return ptr1.p_u32[idx] == ptr2.p_u32[idx];
> +	case V4L2_CTRL_TYPE_RECT:
> +		return ptr1.p_rect->top == ptr2.p_rect->top &&
> +		       ptr1.p_rect->left == ptr2.p_rect->left &&
> +		       ptr1.p_rect->height == ptr2.p_rect->height &&
> +		       ptr1.p_rect->width == ptr2.p_rect->width;

You don't need to do anything here, it will fallback to a memcmp, and
that's fine for struct v4l2_rect.

>  	default:
>  		if (ctrl->is_int)
>  			return ptr1.p_s32[idx] == ptr2.p_s32[idx];
> @@ -307,6 +312,11 @@ static void std_log(const struct v4l2_ctrl *ctrl)
>  	case V4L2_CTRL_TYPE_VP9_FRAME:
>  		pr_cont("VP9_FRAME");
>  		break;
> +	case V4L2_CTRL_TYPE_RECT:
> +		pr_cont("%ux%u@%dx%d",
> +			ptr.p_rect->width, ptr.p_rect->height,
> +			ptr.p_rect->left, ptr.p_rect->top);
> +		break;
>  	default:
>  		pr_cont("unknown type %d", ctrl->type);
>  		break;
> @@ -525,6 +535,7 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
>  	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
>  	struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
>  	struct v4l2_area *area;
> +	struct v4l2_rect *rect;
>  	void *p = ptr.p + idx * ctrl->elem_size;
>  	unsigned int i;
>  
> @@ -888,6 +899,12 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
>  			return -EINVAL;
>  		break;
>  
> +	case V4L2_CTRL_TYPE_RECT:
> +		rect = p;
> +		if (!rect->width || !rect->height)
> +			return -EINVAL;
> +		break;
> +
>  	default:
>  		return -EINVAL;
>  	}
> @@ -1455,6 +1472,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
>  	case V4L2_CTRL_TYPE_AREA:
>  		elem_size = sizeof(struct v4l2_area);
>  		break;
> +	case V4L2_CTRL_TYPE_RECT:
> +		elem_size = sizeof(struct v4l2_rect);
> +		break;
>  	default:
>  		if (type < V4L2_CTRL_COMPOUND_TYPES)
>  			elem_size = sizeof(s32);
> diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
> index b3ce438f1329..919e104de50b 100644
> --- a/include/media/v4l2-ctrls.h
> +++ b/include/media/v4l2-ctrls.h
> @@ -58,6 +58,7 @@ struct video_device;
>   * @p_hdr10_cll:		Pointer to an HDR10 Content Light Level structure.
>   * @p_hdr10_mastering:		Pointer to an HDR10 Mastering Display structure.
>   * @p_area:			Pointer to an area.
> + * @p_rect:			Pointer to a rectangle.
>   * @p:				Pointer to a compound value.
>   * @p_const:			Pointer to a constant compound value.
>   */
> @@ -87,6 +88,7 @@ union v4l2_ctrl_ptr {
>  	struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll;
>  	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
>  	struct v4l2_area *p_area;
> +	struct v4l2_rect *p_rect;
>  	void *p;
>  	const void *p_const;
>  };
> diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> index 343b95107fce..2e36bb610ea6 100644
> --- a/include/uapi/linux/videodev2.h
> +++ b/include/uapi/linux/videodev2.h
> @@ -1754,6 +1754,7 @@ struct v4l2_ext_control {
>  		__u16 __user *p_u16;
>  		__u32 __user *p_u32;
>  		struct v4l2_area __user *p_area;
> +		struct v4l2_rect __user *p_rect;
>  		struct v4l2_ctrl_h264_sps __user *p_h264_sps;
>  		struct v4l2_ctrl_h264_pps *p_h264_pps;
>  		struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
> @@ -1813,6 +1814,7 @@ enum v4l2_ctrl_type {
>  	V4L2_CTRL_TYPE_U16	     = 0x0101,
>  	V4L2_CTRL_TYPE_U32	     = 0x0102,
>  	V4L2_CTRL_TYPE_AREA          = 0x0106,
> +	V4L2_CTRL_TYPE_RECT	     = 0x0107,
>  
>  	V4L2_CTRL_TYPE_HDR10_CLL_INFO		= 0x0110,
>  	V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY	= 0x0111,

Regards,

	Hans
  
Hans Verkuil Aug. 24, 2022, 8:51 a.m. UTC | #3
On 24/08/2022 10:50, Hans Verkuil wrote:
> Hi Yunke,
> 
> You will need to rebase this since some of the v4l2-ctrl internals
> have changed.

Rebase to git://linuxtv.org/media_stage.git, master branch, to be precise.

	Hans
  
Yunke Cao Aug. 25, 2022, 6:15 a.m. UTC | #4
Hi Hans, Hi Laurent,

Thank you for the review!

On Wed, Aug 24, 2022 at 5:50 PM Hans Verkuil <hverkuil-cisco@xs4all.nl> wrote:
>
> Hi Yunke,
>
> You will need to rebase this since some of the v4l2-ctrl internals
> have changed.
>

Thanks, I will rebase for the next version.

> On 28/06/2022 09:56, Yunke Cao wrote:
> > Add p_rect to struct v4l2_ext_control with basic support in
> > v4l2-ctrls.
> >
> > Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
> > Signed-off-by: Yunke Cao <yunkec@google.com>
> > ---
> >  .../media/v4l/vidioc-g-ext-ctrls.rst          |  4 ++++
> >  .../media/videodev2.h.rst.exceptions          |  1 +
> >  drivers/media/v4l2-core/v4l2-ctrls-core.c     | 20 +++++++++++++++++++
> >  include/media/v4l2-ctrls.h                    |  2 ++
> >  include/uapi/linux/videodev2.h                |  2 ++
> >  5 files changed, 29 insertions(+)
> >
> > diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> > index 29971a45a2d4..7473baa4e977 100644
> > --- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> > +++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
> > @@ -189,6 +189,10 @@ still cause this situation.
> >        - ``p_area``
> >        - A pointer to a struct :c:type:`v4l2_area`. Valid if this control is
> >          of type ``V4L2_CTRL_TYPE_AREA``.
> > +    * - struct :c:type:`v4l2_rect` *
> > +      - ``p_rect``
> > +      - A pointer to a struct :c:type:`v4l2_rect`. Valid if this control is
> > +        of type ``V4L2_CTRL_TYPE_RECT``.
> >      * - struct :c:type:`v4l2_ctrl_h264_sps` *
> >        - ``p_h264_sps``
> >        - A pointer to a struct :c:type:`v4l2_ctrl_h264_sps`. Valid if this control is
>
> You also need to update Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst.
>

Ah, I missed that. Will add it in v8.

> > diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> > index 9cbb7a0c354a..7b423475281d 100644
> > --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> > +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> > @@ -147,6 +147,7 @@ replace symbol V4L2_CTRL_TYPE_HEVC_SPS :c:type:`v4l2_ctrl_type`
> >  replace symbol V4L2_CTRL_TYPE_HEVC_PPS :c:type:`v4l2_ctrl_type`
> >  replace symbol V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
> >  replace symbol V4L2_CTRL_TYPE_AREA :c:type:`v4l2_ctrl_type`
> > +replace symbol V4L2_CTRL_TYPE_RECT :c:type:`v4l2_ctrl_type`
> >  replace symbol V4L2_CTRL_TYPE_FWHT_PARAMS :c:type:`v4l2_ctrl_type`
> >  replace symbol V4L2_CTRL_TYPE_VP8_FRAME :c:type:`v4l2_ctrl_type`
> >  replace symbol V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR :c:type:`v4l2_ctrl_type`
> > diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> > index 949c1884d9c1..35d43ba650db 100644
> > --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
> > +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> > @@ -84,6 +84,11 @@ static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
> >               return ptr1.p_u16[idx] == ptr2.p_u16[idx];
> >       case V4L2_CTRL_TYPE_U32:
> >               return ptr1.p_u32[idx] == ptr2.p_u32[idx];
> > +     case V4L2_CTRL_TYPE_RECT:
> > +             return ptr1.p_rect->top == ptr2.p_rect->top &&
> > +                    ptr1.p_rect->left == ptr2.p_rect->left &&
> > +                    ptr1.p_rect->height == ptr2.p_rect->height &&
> > +                    ptr1.p_rect->width == ptr2.p_rect->width;
>
> You don't need to do anything here, it will fallback to a memcmp, and
> that's fine for struct v4l2_rect.
>

Thanks! Will remove it in v8.

Best,
Yunke

> >       default:
> >               if (ctrl->is_int)
> >                       return ptr1.p_s32[idx] == ptr2.p_s32[idx];
> > @@ -307,6 +312,11 @@ static void std_log(const struct v4l2_ctrl *ctrl)
> >       case V4L2_CTRL_TYPE_VP9_FRAME:
> >               pr_cont("VP9_FRAME");
> >               break;
> > +     case V4L2_CTRL_TYPE_RECT:
> > +             pr_cont("%ux%u@%dx%d",
> > +                     ptr.p_rect->width, ptr.p_rect->height,
> > +                     ptr.p_rect->left, ptr.p_rect->top);
> > +             break;
> >       default:
> >               pr_cont("unknown type %d", ctrl->type);
> >               break;
> > @@ -525,6 +535,7 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
> >       struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
> >       struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
> >       struct v4l2_area *area;
> > +     struct v4l2_rect *rect;
> >       void *p = ptr.p + idx * ctrl->elem_size;
> >       unsigned int i;
> >
> > @@ -888,6 +899,12 @@ static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
> >                       return -EINVAL;
> >               break;
> >
> > +     case V4L2_CTRL_TYPE_RECT:
> > +             rect = p;
> > +             if (!rect->width || !rect->height)
> > +                     return -EINVAL;
> > +             break;
> > +
> >       default:
> >               return -EINVAL;
> >       }
> > @@ -1455,6 +1472,9 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
> >       case V4L2_CTRL_TYPE_AREA:
> >               elem_size = sizeof(struct v4l2_area);
> >               break;
> > +     case V4L2_CTRL_TYPE_RECT:
> > +             elem_size = sizeof(struct v4l2_rect);
> > +             break;
> >       default:
> >               if (type < V4L2_CTRL_COMPOUND_TYPES)
> >                       elem_size = sizeof(s32);
> > diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
> > index b3ce438f1329..919e104de50b 100644
> > --- a/include/media/v4l2-ctrls.h
> > +++ b/include/media/v4l2-ctrls.h
> > @@ -58,6 +58,7 @@ struct video_device;
> >   * @p_hdr10_cll:             Pointer to an HDR10 Content Light Level structure.
> >   * @p_hdr10_mastering:               Pointer to an HDR10 Mastering Display structure.
> >   * @p_area:                  Pointer to an area.
> > + * @p_rect:                  Pointer to a rectangle.
> >   * @p:                               Pointer to a compound value.
> >   * @p_const:                 Pointer to a constant compound value.
> >   */
> > @@ -87,6 +88,7 @@ union v4l2_ctrl_ptr {
> >       struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll;
> >       struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
> >       struct v4l2_area *p_area;
> > +     struct v4l2_rect *p_rect;
> >       void *p;
> >       const void *p_const;
> >  };
> > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
> > index 343b95107fce..2e36bb610ea6 100644
> > --- a/include/uapi/linux/videodev2.h
> > +++ b/include/uapi/linux/videodev2.h
> > @@ -1754,6 +1754,7 @@ struct v4l2_ext_control {
> >               __u16 __user *p_u16;
> >               __u32 __user *p_u32;
> >               struct v4l2_area __user *p_area;
> > +             struct v4l2_rect __user *p_rect;
> >               struct v4l2_ctrl_h264_sps __user *p_h264_sps;
> >               struct v4l2_ctrl_h264_pps *p_h264_pps;
> >               struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
> > @@ -1813,6 +1814,7 @@ enum v4l2_ctrl_type {
> >       V4L2_CTRL_TYPE_U16           = 0x0101,
> >       V4L2_CTRL_TYPE_U32           = 0x0102,
> >       V4L2_CTRL_TYPE_AREA          = 0x0106,
> > +     V4L2_CTRL_TYPE_RECT          = 0x0107,
> >
> >       V4L2_CTRL_TYPE_HDR10_CLL_INFO           = 0x0110,
> >       V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY  = 0x0111,
>
> Regards,
>
>         Hans
  

Patch

diff --git a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
index 29971a45a2d4..7473baa4e977 100644
--- a/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
+++ b/Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
@@ -189,6 +189,10 @@  still cause this situation.
       - ``p_area``
       - A pointer to a struct :c:type:`v4l2_area`. Valid if this control is
         of type ``V4L2_CTRL_TYPE_AREA``.
+    * - struct :c:type:`v4l2_rect` *
+      - ``p_rect``
+      - A pointer to a struct :c:type:`v4l2_rect`. Valid if this control is
+        of type ``V4L2_CTRL_TYPE_RECT``.
     * - struct :c:type:`v4l2_ctrl_h264_sps` *
       - ``p_h264_sps``
       - A pointer to a struct :c:type:`v4l2_ctrl_h264_sps`. Valid if this control is
diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
index 9cbb7a0c354a..7b423475281d 100644
--- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
+++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
@@ -147,6 +147,7 @@  replace symbol V4L2_CTRL_TYPE_HEVC_SPS :c:type:`v4l2_ctrl_type`
 replace symbol V4L2_CTRL_TYPE_HEVC_PPS :c:type:`v4l2_ctrl_type`
 replace symbol V4L2_CTRL_TYPE_HEVC_SLICE_PARAMS :c:type:`v4l2_ctrl_type`
 replace symbol V4L2_CTRL_TYPE_AREA :c:type:`v4l2_ctrl_type`
+replace symbol V4L2_CTRL_TYPE_RECT :c:type:`v4l2_ctrl_type`
 replace symbol V4L2_CTRL_TYPE_FWHT_PARAMS :c:type:`v4l2_ctrl_type`
 replace symbol V4L2_CTRL_TYPE_VP8_FRAME :c:type:`v4l2_ctrl_type`
 replace symbol V4L2_CTRL_TYPE_VP9_COMPRESSED_HDR :c:type:`v4l2_ctrl_type`
diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
index 949c1884d9c1..35d43ba650db 100644
--- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
+++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
@@ -84,6 +84,11 @@  static bool std_equal(const struct v4l2_ctrl *ctrl, u32 idx,
 		return ptr1.p_u16[idx] == ptr2.p_u16[idx];
 	case V4L2_CTRL_TYPE_U32:
 		return ptr1.p_u32[idx] == ptr2.p_u32[idx];
+	case V4L2_CTRL_TYPE_RECT:
+		return ptr1.p_rect->top == ptr2.p_rect->top &&
+		       ptr1.p_rect->left == ptr2.p_rect->left &&
+		       ptr1.p_rect->height == ptr2.p_rect->height &&
+		       ptr1.p_rect->width == ptr2.p_rect->width;
 	default:
 		if (ctrl->is_int)
 			return ptr1.p_s32[idx] == ptr2.p_s32[idx];
@@ -307,6 +312,11 @@  static void std_log(const struct v4l2_ctrl *ctrl)
 	case V4L2_CTRL_TYPE_VP9_FRAME:
 		pr_cont("VP9_FRAME");
 		break;
+	case V4L2_CTRL_TYPE_RECT:
+		pr_cont("%ux%u@%dx%d",
+			ptr.p_rect->width, ptr.p_rect->height,
+			ptr.p_rect->left, ptr.p_rect->top);
+		break;
 	default:
 		pr_cont("unknown type %d", ctrl->type);
 		break;
@@ -525,6 +535,7 @@  static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
 	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
 	struct v4l2_ctrl_hevc_decode_params *p_hevc_decode_params;
 	struct v4l2_area *area;
+	struct v4l2_rect *rect;
 	void *p = ptr.p + idx * ctrl->elem_size;
 	unsigned int i;
 
@@ -888,6 +899,12 @@  static int std_validate_compound(const struct v4l2_ctrl *ctrl, u32 idx,
 			return -EINVAL;
 		break;
 
+	case V4L2_CTRL_TYPE_RECT:
+		rect = p;
+		if (!rect->width || !rect->height)
+			return -EINVAL;
+		break;
+
 	default:
 		return -EINVAL;
 	}
@@ -1455,6 +1472,9 @@  static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,
 	case V4L2_CTRL_TYPE_AREA:
 		elem_size = sizeof(struct v4l2_area);
 		break;
+	case V4L2_CTRL_TYPE_RECT:
+		elem_size = sizeof(struct v4l2_rect);
+		break;
 	default:
 		if (type < V4L2_CTRL_COMPOUND_TYPES)
 			elem_size = sizeof(s32);
diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h
index b3ce438f1329..919e104de50b 100644
--- a/include/media/v4l2-ctrls.h
+++ b/include/media/v4l2-ctrls.h
@@ -58,6 +58,7 @@  struct video_device;
  * @p_hdr10_cll:		Pointer to an HDR10 Content Light Level structure.
  * @p_hdr10_mastering:		Pointer to an HDR10 Mastering Display structure.
  * @p_area:			Pointer to an area.
+ * @p_rect:			Pointer to a rectangle.
  * @p:				Pointer to a compound value.
  * @p_const:			Pointer to a constant compound value.
  */
@@ -87,6 +88,7 @@  union v4l2_ctrl_ptr {
 	struct v4l2_ctrl_hdr10_cll_info *p_hdr10_cll;
 	struct v4l2_ctrl_hdr10_mastering_display *p_hdr10_mastering;
 	struct v4l2_area *p_area;
+	struct v4l2_rect *p_rect;
 	void *p;
 	const void *p_const;
 };
diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h
index 343b95107fce..2e36bb610ea6 100644
--- a/include/uapi/linux/videodev2.h
+++ b/include/uapi/linux/videodev2.h
@@ -1754,6 +1754,7 @@  struct v4l2_ext_control {
 		__u16 __user *p_u16;
 		__u32 __user *p_u32;
 		struct v4l2_area __user *p_area;
+		struct v4l2_rect __user *p_rect;
 		struct v4l2_ctrl_h264_sps __user *p_h264_sps;
 		struct v4l2_ctrl_h264_pps *p_h264_pps;
 		struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
@@ -1813,6 +1814,7 @@  enum v4l2_ctrl_type {
 	V4L2_CTRL_TYPE_U16	     = 0x0101,
 	V4L2_CTRL_TYPE_U32	     = 0x0102,
 	V4L2_CTRL_TYPE_AREA          = 0x0106,
+	V4L2_CTRL_TYPE_RECT	     = 0x0107,
 
 	V4L2_CTRL_TYPE_HDR10_CLL_INFO		= 0x0110,
 	V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY	= 0x0111,