how to wait for QCamera::load() ?

[pauledd]

Hi there,
I have a function that reqests the supported pixelformats from a camera and fills a QComboBox with the results.
But before I can do that the camera needs to be loaded. How can I call "camera->load();" and then wait or check for it to be loaded and only then check for the formats. If I check immediately after load() for the formats it will fail because it seems to need some time to communicate with the camera:

void MainWindow::getCameraFormat(){
	camera->load();
// Will fail
	if(camera->status() == QCamera::LoadedStatus)
	{
		qDebug()<< "camera loaded, filling supported formats";
		foreach (QVideoFrame::PixelFormat fmt, camera->supportedViewfinderPixelFormats())
		{
			comboBoxFormats->addItem(convertToString(fmt),QVariant::fromValue<int>(fmt));
		}
	
	}
}

[raven-worx]

@pauledd
connect to the QCamera::statusChanged() signal and only do your filling when the status changed to QCamera::LoadedStatus.
So move your if(camera->status() == QCamera::LoadedStatus) block to the slot.

[pauledd]

@raven-worx but the problem I see is that the slot then will be called also everytime when I start my camera because it also calles cameraQCamera::statusChanged().

[raven-worx]

@pauledd
of course you should still check in the slot if the status changed to QCamera::LoadedStatus

[pauledd]

alright, I'll try that, thanks.