linux-kernel - Re: [PATCH 4/4] v4l2-ctl: Support setting V4L2_CTRL_TYPE

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Message-ID: <31815641-550c-88ab-c037-2e743cea59b3@xs4all.nl>
Date:   Mon, 4 Nov 2019 10:41:20 +0100
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Ricardo Ribalda Delgado <ribalda@...nel.org>,
        linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/4] v4l2-ctl: Support setting V4L2_CTRL_TYPE_AREA
 controls

On 11/1/19 12:25 PM, Ricardo Ribalda Delgado wrote:
> $ v4l2-ctl  -d /dev/video1  -c area=123123x233
> 
> Signed-off-by: Ricardo Ribalda Delgado <ribalda@...nel.org>
> ---
>  utils/v4l2-ctl/v4l2-ctl-common.cpp | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/utils/v4l2-ctl/v4l2-ctl-common.cpp b/utils/v4l2-ctl/v4l2-ctl-common.cpp
> index 95339561..676b05e0 100644
> --- a/utils/v4l2-ctl/v4l2-ctl-common.cpp
> +++ b/utils/v4l2-ctl/v4l2-ctl-common.cpp
> @@ -973,6 +973,10 @@ void common_set(cv4l_fd &_fd)
>  					strncpy(ctrl.string, iter->second.c_str(), qc.maximum);
>  					ctrl.string[qc.maximum] = 0;
>  					break;
> +				case V4L2_CTRL_TYPE_AREA:
> +					sscanf(iter->second.c_str(), "%dx%d",

Use %ux%u since these are unsigned values.

Regards,

	Hans

> +					       &ctrl.p_area->width, &ctrl.p_area->height);
> +					break;
>  				default:
>  					fprintf(stderr, "%s: unsupported payload type\n",
>  							qc.name);
>