QT Camera example

tech.hi

Hi,
I am trying to use the qtcamera example application. It worked perfectly while i was using my USB camera. But i have another h/w connected camera which i want to use.
When i looked at the devices only usb camera was detected and hw camera was not.

What changes do you think i should make to make the h/w camera work?

As of now i am using gstreamer commands,
sudo gst-launch-1.0 v4l2src device=/dev/video1 ! 'video/x-raw,format=UYVY,width=1920,height=1080' ! glimagesink
Any help will be appreciated :)
Thanks in advance

SGaist

Hi,

What type of camera is that ?

SGaist

I just remembered that if you use a more recent version of Qt, you can use custom gstreamer pipelines. See the corresponding Qt documentation.

tech.hi

@SGaist Hey thanks for answering.
But i think I might need little more help here.

So when i was going through the code i found the part which is searching for the camera device,
ui->setupUi(this);

//Camera devices:
QByteArray cameraDevice;

QActionGroup *videoDevicesGroup = new QActionGroup(this);
videoDevicesGroup->setExclusive(true);
foreach(const QByteArray &deviceName, QCamera::availableDevices()) {
    QString description = camera->deviceDescription(deviceName);
    QAction *videoDeviceAction = new QAction(description, videoDevicesGroup);
    videoDeviceAction->setCheckable(true);
    videoDeviceAction->setData(QVariant(deviceName));
    if (cameraDevice.isEmpty()) {
        cameraDevice = deviceName;
        videoDeviceAction->setChecked(true);
    }
    ui->menuDevices->addAction(videoDeviceAction);
}

connect(videoDevicesGroup, SIGNAL(triggered(QAction*)), SLOT(updateCameraDevice(QAction*)));
connect(ui->captureWidget, SIGNAL(currentChanged(int)), SLOT(updateCaptureMode()));

#ifdef HAVE_CAMERA_BUTTONS
ui->lockButton->hide();
#endif

setCamera(cameraDevice);

}

So you are saying i should replace the above code with this command " sudo gst-launch-1.0 v4l2src device=/dev/video1 ! 'video/x-raw,format=UYVY,width=1920,height=1080' ! glimagesink " ??
Can you help me out to do this?

SGaist

No, see QMediaPlayer::setMedia.

tech.hi

@SGaist :
So URL should be something like ,
QUrl("gst-pipeline:v4l2src device=/dev/video1 ! 'video/x-raw,format=UYVY,width=1920,height=1080' ! glimagesink "); ?

SGaist

As shown in the documentation I linked, you need a video sink named qtvideosink.