default camera application(Qt-5.2.0) is not working on embedded device

[sanjeet]

Hi all,

My this post is similar related to earlier post, but this time for embedded device.
Earlier post link is below :

http://www.qtcentre.org/threads/61373-default-camera-application%28Qt-5-2-0%29-is-not-running-on-linux

I am trying to run same camera example application(examples/multimediawidgets/camera) on my
embedded device, but i m getting something diff issue.

Application is running, even device is detected in "Device" menu as "vivi", but streaming not starts.
I found that in "File" menu, "Start camera" is disabled and "Capture" button of "Image" tab of right panel,
is also disabled.
In "video" tab only "stop" is disabled(i.e. OK), eventhough camera is not streaming.

My device is i.MX6SL based embedded device.

Can you guide anybody, what would be the problem ?

[anda_skoa]

Since you are saying that this is a new question we have to assume that the difference is the used operating system.
Your other question was about Linux, which operating system does this system run?

Cheers,
_

[sanjeet]

Hi anda_skoa,

First of all thanks for responding !
My earlier post was for desktop and there OS is ubuntu-12.04 and kernel version is 3.11.0-26-generic.

But my this post is for embedded device so there is no specific OS is running here.
In embedded device, there is a customized kernel and so OS.
Im my device, we are using kernel of version-3.0.35.

So, my device is also linux based and of arm architecture and i.MX6SL

Now can you guide me what could be the problem ?

[anda_skoa]

Since both operating systems are Linux, it is very likely that the same software stack is involved, potentially just different versions.

Have you tried any other software, to check if the problem is the Qt specific parts or if it is somewhere lower in the stack, e.g. driver?

Cheers,
_

[sanjeet]

Hi anda_skoa,

This camera application is not working neither in desktop nor my embedded device, and both
places i am getting different issues.

We have checked camera(h/w), in our embedded device, it's fine because we are having
other application using v4l2 in Qt-5.2.0, that is working properly, only default camera application
given by qt-example is not working.

So, i don't think so there is a driver related issues.

At the same many other example given by Qt is working fine in device.
Right now our priority is for embedded device.

[anda_skoa]

If you have another Qt application which works you should have a starting point for your investigation.
You'll need to find out what this application does different to the one that does not work.

Cheers,
_