<![CDATA[unable to get colored image using v4l2 and qt+qml onClicked]]>hi everyone first of all i am very new to Qt and using Qt-Quick Application on Qt-4.8.5 for my 32 bit IMX6-arm7 target and building on 64bit ubuntu12.04.
i want to generate onClicked event to capture camera image using v4l2 api. I am following the referance from this link text and link text but somwhat unable to get colored image as per expected, the output is combination of black and green color. I will feel really glad if u help me to get rid of this issue.

]]>https://forum.qt.io/topic/60253/unable-to-get-colored-image-using-v4l2-and-qt-qml-onclickedRSS for NodeMon, 28 Sep 2026 10:51:06 GMTMon, 02 Nov 2015 13:19:41 GMT60<![CDATA[Reply to unable to get colored image using v4l2 and qt+qml onClicked on Tue, 03 Nov 2015 06:52:49 GMT]]>There already a camera application(qtcam) integrated qtquick and v4l2, please try clone the source from the below link,
https://github.com/econsysqtcam/qtcam.git
Application available in launchpad also for ubuntu 12.04 & 14.04

]]>https://forum.qt.io/post/296322https://forum.qt.io/post/296322Tue, 03 Nov 2015 06:52:49 GMT<![CDATA[Reply to unable to get colored image using v4l2 and qt+qml onClicked on Tue, 03 Nov 2015 06:47:27 GMT]]>thankx for ur reply,

yes i did try sample code from this link text.
but the output was just stream of dots

[root@imx6q 3nov]# ./test1 -h
Usage: ./test1 [options]

Version 1.3
Options:
-d | --device name Video device name [/dev/video0]
-h | --help Print this message
-m | --mmap Use memory mapped buffers [default]
-r | --read Use read() calls
-u | --userp Use application allocated buffers
-o | --output Outputs stream to stdout
-f | --format Force format to 640x480 YUYV
-c | --count Number of frames to grab [70]

[root@imx6q 3nov]# ./test1 -d /dev/video0
YUYV
......................................................................
[root@imx6q 3nov]#

[root@imx6q 3nov]# ./test1 -r
imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00000001
.imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00000001
.imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00000001
.imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00000001
.imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00000001
.imx-ipuv3 imx-ipuv3.0: IPU Warning - IPU_INT_STAT_10 = 0x00000001

[root@imx6q 3nov]# ./test1 -o test.jpg
YUYV
�������������������������������������������������������������������������������������������������������������������������������������������������������������������

[root@imx6q 3nov]# ./test1 -o test.bmp
YUYV
�������������������������������������������������������������������������������������������������������������������������������������������������������������������

some kind of unsupported data. not getting what i am doin wrong.

]]>https://forum.qt.io/post/296321https://forum.qt.io/post/296321Tue, 03 Nov 2015 06:47:27 GMT<![CDATA[Reply to unable to get colored image using v4l2 and qt+qml onClicked on Mon, 02 Nov 2015 23:53:46 GMT]]>Hi and welcome to devnet,

Did you run the v4l2 sample code successfully ?

]]>https://forum.qt.io/post/296295https://forum.qt.io/post/296295Mon, 02 Nov 2015 23:53:46 GMT