Re: [PATCH v2 2/3] v4l2-ctl: Support V4L2_CTRL_TYPE_RECT

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On 30/10/2024 10:03, Laurent Pinchart wrote:
> On Wed, Oct 30, 2024 at 11:43:06AM +0900, ming.qian@xxxxxxxxxxx wrote:
>> From: Yunke Cao <yunkec@xxxxxxxxxx>
>>
>> Tested with VIVID
>>
>>  ./v4l2-ctl -C rect -d 0
>> rect: 300x400@200x100
>>
>>  ./v4l2-ctl -c rect=1000x2000@0x0
>>  ./v4l2-ctl -C rect -d 0
>> rect: 1000x2000@0x0
>>
>> Signed-off-by: Yunke Cao <yunkec@xxxxxxxxxx>
>> Signed-off-by: Ming Qian <ming.qian@xxxxxxxxxxx>
>> ---
>>  utils/v4l2-ctl/v4l2-ctl-common.cpp | 12 ++++++++++++
>>  1 file changed, 12 insertions(+)
>>
>> diff --git a/utils/v4l2-ctl/v4l2-ctl-common.cpp b/utils/v4l2-ctl/v4l2-ctl-common.cpp
>> index 40667575fcc7..538e1951cf81 100644
>> --- a/utils/v4l2-ctl/v4l2-ctl-common.cpp
>> +++ b/utils/v4l2-ctl/v4l2-ctl-common.cpp
>> @@ -614,6 +614,10 @@ static void print_value(int fd, const v4l2_query_ext_ctrl &qc, const v4l2_ext_co
>>  		case V4L2_CTRL_TYPE_AREA:
>>  			printf("%dx%d", ctrl.p_area->width, ctrl.p_area->height);
>>  			break;
>> +		case V4L2_CTRL_TYPE_RECT:
>> +			printf("%ux%u@%dx%d", ctrl.p_rect->width, ctrl.p_rect->height,
> 
> I find this notation ambiguous, it's not immediately clear when reading
> 10x10@20x20 if we're looking at a 10x10 rectangle positioned at (20,20)
> or the other way around. media-ctl use (20,20)/10x10 which I think would
> be a better notation.

Good point, I agree.

Ming Qian, can you also update patch 1/4 of the kernel patch series to
use the same formatting when logging the V4L2_CTRL_TYPE_RECT value?

Regards,

	Hans

> 
>> +			       ctrl.p_rect->left, ctrl.p_rect->top);
>> +			break;
>>  		default:
>>  			printf("unsupported payload type");
>>  			break;
>> @@ -702,6 +706,9 @@ static void print_qctrl(int fd, const v4l2_query_ext_ctrl &qc,
>>  	case V4L2_CTRL_TYPE_AREA:
>>  		printf("%31s %#8.8x (area)   :", s.c_str(), qc.id);
>>  		break;
>> +	case V4L2_CTRL_TYPE_RECT:
>> +		printf("%31s %#8.8x (rect)   :", s.c_str(), qc.id);
>> +		break;
>>  	case V4L2_CTRL_TYPE_HDR10_CLL_INFO:
>>  		printf("%31s %#8.8x (hdr10-cll-info):", s.c_str(), qc.id);
>>  		break;
>> @@ -1279,6 +1286,11 @@ void common_set(cv4l_fd &_fd)
>>  					sscanf(set_ctrl.second.c_str(), "%ux%u",
>>  					       &ctrl.p_area->width, &ctrl.p_area->height);
>>  					break;
>> +				case V4L2_CTRL_TYPE_RECT:
>> +					sscanf(set_ctrl.second.c_str(), "%ux%u@%dx%d",
>> +					       &ctrl.p_rect->width, &ctrl.p_rect->height,
>> +					       &ctrl.p_rect->left, &ctrl.p_rect->top);
>> +					break;
>>  				default:
>>  					fprintf(stderr, "%s: unsupported payload type\n",
>>  							qc.name);
> 





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