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

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Date:   Mon, 4 Nov 2019 12:52:38 +0100
From:   Hans Verkuil <hverkuil-cisco@...all.nl>
To:     Ricardo Ribalda Delgado <ribalda@...nel.org>
Cc:     linux-media <linux-media@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 4/4] v4l2-ctl: Support setting V4L2_CTRL_TYPE_AREA
 controls

On 11/4/19 12:21 PM, Ricardo Ribalda Delgado wrote:
> Hi Hans
> 
> Sure I will fix this. Shall I resend it once you have updated the
> headers on v4l-utils?

Don't wait for that, just resend. I can merge this as soon as the new
headers are in.

Regards,

	Hans

> 
> Best regards
> 
> On Mon, Nov 4, 2019 at 10:41 AM Hans Verkuil <hverkuil-cisco@...all.nl> wrote:
>>
>> 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);
>>>
>>