linux-kernel - Re: [PATCH v17 00/17] media: uvcvideo: Implement UVC v1.5 ROI

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Message-ID: <6b472224-0789-46c8-bfd0-7c1c4ea67246@redhat.com>
Date: Mon, 10 Feb 2025 17:07:36 +0100
From: Hans de Goede <hdegoede@...hat.com>
To: Ricardo Ribalda <ribalda@...omium.org>,
 Laurent Pinchart <laurent.pinchart@...asonboard.com>,
 Mauro Carvalho Chehab <mchehab@...nel.org>,
 Sakari Ailus <sakari.ailus@...ux.intel.com>,
 Hans Verkuil <hverkuil@...all.nl>
Cc: Yunke Cao <yunkec@...omium.org>, linux-media@...r.kernel.org,
 linux-kernel@...r.kernel.org, Yunke Cao <yunkec@...gle.com>,
 Sergey Senozhatsky <senozhatsky@...omium.org>,
 Daniel Scally <dan.scally@...asonboard.com>
Subject: Re: [PATCH v17 00/17] media: uvcvideo: Implement UVC v1.5 ROI

Hi Ricardo,

On 3-Feb-25 12:55 PM, Ricardo Ribalda wrote:
> This patchset implements UVC v1.5 region of interest using V4L2
> control API.
> 
> ROI control is consisted two uvc specific controls.
> 1. A rectangle control with a newly added type V4L2_CTRL_TYPE_RECT.
> 2. An auto control with type bitmask.
> 
> V4L2_CTRL_WHICH_MIN/MAX_VAL is added to support the rectangle control.
> 
> The corresponding v4l-utils series can be found at
> https://patchwork.linuxtv.org/project/linux-media/list/?series=11069 .
> 
> Tested with v4l2-compliance, v4l2-ctl, calling ioctls on usb cameras and
> VIVID with a newly added V4L2_CTRL_TYPE_RECT control.
> 
> This set includes also the patch:
> media: uvcvideo: Fix event flags in uvc_ctrl_send_events
> It is not technically part of this change, but we conflict with it.
> 
> I am continuing the work that Yunke did.
> 
> Changes in v17:
> - Rebase on latest media-committers/next
> - Link to v16: https://lore.kernel.org/r/20241210-uvc-roi-v16-0-e8201f7e8e57@chromium.org

Thank you for the rebased series.

I've merge the entire series into:
https://gitlab.freedesktop.org/linux-media/users/uvc/ -next now.

Regards,

Hans







> Changes in v16:
> - add documentation
> - discard re-style
> - refactor -ENOMEM
> - remove "Use the camera to clamp compound controls"
> - move uvc_rect
> - data_out = 0
> - s/max/min in uvc_set_rect()
> - Return -EINVAL in uvc_ioctl_xu_ctrl_map instead of -ENOTTY.
> - Use switch inside uvc_set_le_value.
> - Link to v15: https://lore.kernel.org/r/20241114-uvc-roi-v15-0-64cfeb56b6f8@chromium.org
> 
> Changes in v15:
> - Modify mapping set/get to support any size
> - Remove v4l2_size field. It is not needed, we can use the v4l2_type to
>   infer it.
> - Improve documentation.
> - Lots of refactoring, now adding compound and roi are very small
>   patches.
> - Remove rectangle clamping, not supported by some firmware.
> - Remove init, we can add it later.
> - Move uvc_cid to USER_BASE
> 
> - Link to v14: https://lore.kernel.org/linux-media/20231201071907.3080126-1-yunkec@google.com/
> 
> Signed-off-by: Ricardo Ribalda <ribalda@...omium.org>
> ---
> Hans Verkuil (1):
>       media: v4l2-ctrls: add support for V4L2_CTRL_WHICH_MIN/MAX_VAL
> 
> Ricardo Ribalda (10):
>       media: uvcvideo: Handle uvc menu translation inside uvc_get_le_value
>       media: uvcvideo: Handle uvc menu translation inside uvc_set_le_value
>       media: uvcvideo: refactor uvc_ioctl_g_ext_ctrls
>       media: uvcvideo: uvc_ioctl_(g|s)_ext_ctrls: handle NoP case
>       media: uvcvideo: Support any size for mapping get/set
>       media: uvcvideo: Factor out clamping from uvc_ctrl_set
>       media: uvcvideo: Factor out query_boundaries from query_ctrl
>       media: uvcvideo: let v4l2_query_v4l2_ctrl() work with v4l2_query_ext_ctrl
>       media: uvcvideo: Introduce uvc_mapping_v4l2_size
>       media: uvcvideo: Add sanity check to uvc_ioctl_xu_ctrl_map
> 
> Yunke Cao (6):
>       media: v4l2_ctrl: Add V4L2_CTRL_TYPE_RECT
>       media: vivid: Add a rectangle control
>       media: uvcvideo: add support for compound controls
>       media: uvcvideo: support V4L2_CTRL_WHICH_MIN/MAX_VAL
>       media: uvcvideo: implement UVC v1.5 ROI
>       media: uvcvideo: document UVC v1.5 ROI
> 
>  .../userspace-api/media/drivers/uvcvideo.rst       |  64 ++
>  .../userspace-api/media/v4l/vidioc-g-ext-ctrls.rst |  26 +-
>  .../userspace-api/media/v4l/vidioc-queryctrl.rst   |  14 +
>  .../userspace-api/media/videodev2.h.rst.exceptions |   4 +
>  drivers/media/i2c/imx214.c                         |   4 +-
>  drivers/media/platform/qcom/venus/venc_ctrls.c     |   9 +-
>  drivers/media/test-drivers/vivid/vivid-ctrls.c     |  34 +
>  drivers/media/usb/uvc/uvc_ctrl.c                   | 799 ++++++++++++++++-----
>  drivers/media/usb/uvc/uvc_v4l2.c                   |  77 +-
>  drivers/media/usb/uvc/uvcvideo.h                   |  25 +-
>  drivers/media/v4l2-core/v4l2-ctrls-api.c           |  54 +-
>  drivers/media/v4l2-core/v4l2-ctrls-core.c          | 167 ++++-
>  drivers/media/v4l2-core/v4l2-ioctl.c               |   4 +-
>  include/media/v4l2-ctrls.h                         |  38 +-
>  include/uapi/linux/usb/video.h                     |   1 +
>  include/uapi/linux/uvcvideo.h                      |  13 +
>  include/uapi/linux/v4l2-controls.h                 |   7 +
>  include/uapi/linux/videodev2.h                     |   5 +
>  18 files changed, 1058 insertions(+), 287 deletions(-)
> ---
> base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b
> change-id: 20241113-uvc-roi-66bd6cfa1e64
> 
> Best regards,