On Wed, Aug 09, 2023 at 10:35:46AM +0200, Hans Verkuil wrote:
> On 8/9/23 08:51, Hans Verkuil wrote:
> > On 26/04/2023 10:29, Yunke Cao wrote:
> >> Add p_rect to struct v4l2_ext_control with basic support in
> >> v4l2-ctrls.
> >>
> >> Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
> >> Reviewed-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
> >> Reviewed-by: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
> >> Reviewed-by: Daniel Scally <dan.scally@xxxxxxxxxxxxxxxx>
> >> Signed-off-by: Yunke Cao <yunkec@xxxxxxxxxx>
> >
> > Reviewed-by: Hans Verkuil <hverkuil-cisco@xxxxxxxxx>
> >
> > Regards,
> >
> > Hans
> >
> >> ---
> >> Changelog since v10:
> >> - Added reviewed-by from Sergey and Daniel.
> >> Changelog since v9:
> >> - No Change.
> >> Changelog since v8:
> >> - No change.
> >> Changelog since v7:
> >> - Document V4L2_CTRL_TYPE_RECT in vidioc-queryctrl.rst.
> >> - Rebased to media-stage master.
> >> - Do not assign each field in std_equal
> >>
> >> .../media/v4l/vidioc-g-ext-ctrls.rst | 4 ++++
> >> .../userspace-api/media/v4l/vidioc-queryctrl.rst | 7 +++++++
> >> .../media/videodev2.h.rst.exceptions | 1 +
> >> drivers/media/v4l2-core/v4l2-ctrls-core.c | 15 +++++++++++++++
> >> include/media/v4l2-ctrls.h | 2 ++
> >> include/uapi/linux/videodev2.h | 2 ++
> >> 6 files changed, 31 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 892cfeb8b988..927ef397f1ce 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/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
> >> index a20dfa2a933b..58982cd382e3 100644
> >> --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
> >> +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst
> >> @@ -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
>
> Actually, the min/max entries here should be 'optional'.
>
> >> + - 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.
>
> And here add something along the lines of:
>
> "Support for ``V4L2_CTRL_WHICH_MIN_VAL`` and ``V4L2_CTRL_WHICH_MAX_VAL`` is optional
> and depends on the ``V4L2_CTRL_FLAG_HAS_WHICH_MIN_MAX`` flag. See the documentation
> of the specific control on how to interpret the minimum and maximum values."
Did you mean optional as in decided for each individual control of this
type (that is, a V4L2_CID_FOO of type RECT would define in its
documentation if the MIN/MAX API is used or not, and all instances of
that control must comply), or each control instance ?
> This change should be made to patch 06/11 which introduces WHICH_MIN/MAX_VAL.
>
> >> * - ``V4L2_CTRL_TYPE_H264_SPS``
> >> - n/a
> >> - n/a
> >> diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> >> index 2a589d34b80e..828cca8e2daa 100644
> >> --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> >> +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions
> >> @@ -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`
> >> diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> >> index 29169170880a..e7f232842376 100644
> >> --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c
> >> +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c
> >> @@ -350,6 +350,11 @@ void v4l2_ctrl_type_op_log(const struct v4l2_ctrl *ctrl)
> >> case V4L2_CTRL_TYPE_HEVC_DECODE_PARAMS:
> >> pr_cont("HEVC_DECODE_PARAMS");
> >> 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;
> >> @@ -569,6 +574,7 @@ 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;
> >>
> >> @@ -918,6 +924,12 @@ 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;
> >> }
> >> @@ -1605,6 +1617,9 @@ 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 e59d9a234631..1846caf9dd53 100644
> >> --- a/include/media/v4l2-ctrls.h
> >> +++ b/include/media/v4l2-ctrls.h
> >> @@ -52,6 +52,7 @@ 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.
> >> */
> >> @@ -81,6 +82,7 @@ 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 17a9b975177a..ce2bd9ac4c47 100644
> >> --- a/include/uapi/linux/videodev2.h
> >> +++ b/include/uapi/linux/videodev2.h
> >> @@ -1797,6 +1797,7 @@ struct v4l2_ext_control {
> >> __u32 __user *p_s32;
> >> __u32 __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 *p_h264_pps;
> >> struct v4l2_ctrl_h264_scaling_matrix __user *p_h264_scaling_matrix;
> >> @@ -1861,6 +1862,7 @@ 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,
Laurent Pinchart
