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media: v4l2_ctrl: Add V4L2_CTRL_TYPE_RECT

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Add p_rect to struct v4l2_ext_control with basic support in
v4l2-ctrls.

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Ricardo Ribalda <ribalda@chromium.org>
Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org>
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Signed-off-by: Yunke Cao <yunkec@google.com>
Reviewed-by: Hans Verkuil <hverkuil@xs4all.nl>
Tested-by: Yunke Cao <yunkec@google.com>
Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
Link: https://lore.kernel.org/r/20250203-uvc-roi-v17-1-5900a9fed613@chromium.org
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
This commit is contained in:
Yunke Cao
2025-02-03 11:55:37 +00:00
committed by Hans Verkuil
parent f4b211714b
commit 3b9d7340cf
6 changed files with 31 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
Documentation/userspace-api/media/v4l/vidioc-g-ext-ctrls.rst
View File

@@ -199,6 +199,10 @@ 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

7
Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
View File

@@ -441,6 +441,13 @@ See also the examples in :ref:`control`.
- n/a
- A struct :c:type:`v4l2_area`, containing the width and the height
of a rectangular area. Units depend on the use case.
* - ``V4L2_CTRL_TYPE_RECT``
- n/a
- n/a
- n/a
- A struct :c:type:`v4l2_rect`, containing a rectangle described by
the position of its top-left corner, the width and the height. Units
depend on the use case.
* - ``V4L2_CTRL_TYPE_H264_SPS``
- n/a
- n/a

1
Documentation/userspace-api/media/videodev2.h.rst.exceptions
View File

@@ -150,6 +150,7 @@ 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`

16
drivers/media/v4l2-core/v4l2-ctrls-core.c
View File

@@ -370,7 +370,11 @@ void v4l2_ctrl_type_op_log(const struct v4l2_ctrl *ctrl)
case V4L2_CTRL_TYPE_AV1_FILM_GRAIN:
pr_cont("AV1_FILM_GRAIN");
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;
@@ -815,6 +819,7 @@ 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;
@@ -1172,6 +1177,12 @@ 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;
}
@@ -1872,6 +1883,9 @@ 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);

2
include/media/v4l2-ctrls.h
View File

@@ -56,6 +56,7 @@ struct video_device;
* @p_av1_tile_group_entry: Pointer to an AV1 tile group entry structure.
* @p_av1_frame: Pointer to an AV1 frame structure.
* @p_av1_film_grain: Pointer to an AV1 film grain structure.
* @p_rect: Pointer to a rectangle.
* @p: Pointer to a compound value.
* @p_const: Pointer to a constant compound value.
*/
@@ -89,6 +90,7 @@ union v4l2_ctrl_ptr {
struct v4l2_ctrl_av1_tile_group_entry *p_av1_tile_group_entry;
struct v4l2_ctrl_av1_frame *p_av1_frame;
struct v4l2_ctrl_av1_film_grain *p_av1_film_grain;
struct v4l2_rect *p_rect;
void *p;
const void *p_const;
};

2
include/uapi/linux/videodev2.h
View File

@@ -1859,6 +1859,7 @@ struct v4l2_ext_control {
__s32 __user *p_s32;
__s64 __user *p_s64;
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 __user *p_h264_pps;
struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
@@ -1929,6 +1930,7 @@ 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,