linux-kernel - Re: [PATCHv5 0/5] media: uvcvideo: implement UVC 1.5 ROI

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Message-ID: <8583ed26-ef35-3341-5058-32dbf219d10c@xs4all.nl>
Date:   Wed, 26 May 2021 12:38:53 +0200
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Ricardo Ribalda <ribalda@...omium.org>
Cc:     Tomasz Figa <tfiga@...omium.org>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv5 0/5] media: uvcvideo: implement UVC 1.5 ROI

Hi Sergey,

On 01/05/2021 10:19, Sergey Senozhatsky wrote:
> Hello,
> 
> 	This patch set implements UVC 1.5 ROI using v4l2_selection API.
> 
> v5:
> -- fixed UAPI typo: STABILIXATION
> -- moved V4L2_CID_REGION_OF_INTEREST_AUTO to V4L2_CID_CAMERA_CLASS_BASE+36
> -- added more comments (Ricardo)
> -- added V4L2_CID_REGION_OF_INTEREST_AUTO to v4l2_ctrl_get_name() (Ricardo)
> 
> Sergey Senozhatsky (5):
>   media: v4l UAPI: add ROI selection targets

As mentioned in my reply to v4 0/5, I am quite strongly opposed to using the
Selection API for this as opposed to using controls. Unless someone can provide
strong arguments for using the Selection API, I am inclined to reject this.

Sorry about that, I probably should have been reviewing this series sooner.

Regards,

	Hans

>   media: v4l UAPI: document ROI selection targets
>   media: uvcvideo: add ROI auto controls
>   media: v4l UAPI: document ROI auto_controls
>   media: uvcvideo: add UVC 1.5 ROI control
> 
>  .../media/v4l/ext-ctrls-camera.rst            |  23 +++
>  .../media/v4l/selection-api-configuration.rst |  22 ++
>  .../media/v4l/selection-api-examples.rst      |  27 +++
>  .../media/v4l/v4l2-selection-targets.rst      |  24 +++
>  drivers/media/usb/uvc/uvc_ctrl.c              |  19 ++
>  drivers/media/usb/uvc/uvc_v4l2.c              | 189 +++++++++++++++++-
>  drivers/media/v4l2-core/v4l2-ctrls.c          |   1 +
>  include/uapi/linux/usb/video.h                |   1 +
>  include/uapi/linux/v4l2-common.h              |   8 +
>  include/uapi/linux/v4l2-controls.h            |  10 +
>  10 files changed, 321 insertions(+), 3 deletions(-)
>