Hello Tomasz and all, sorry for the late response - needed to figure several things first.
>>Have tried to wait until camera is in active status? Yes, this is the case. Not that I consciously did that but the cam de facto is in active state. >>And why you set timer interval to 40 ms? Assuming a frame rate of 25 fps the capture interval is 40 ms. In the meantime I figured that this Please find a minimal example app here, which shows my problem decribed below. It works fine on Linux, Windows and also Windows in a virtual Box on OSX but on native OSX I have this delay of 35 seconds until the sytems works: https://www.dropbox.com/s/u6ifh6enco012xk/myCamera.zip?dl=0 Thanks, best Alex -- http://www.carot.de Email : alexan...@carot.de Tel.: +49 (0)177 5719797 > Hi all, > > I have a video related app, which works fine but it takes 35 seconds after > initialization for the cam to work in single-capture modus. The code looks > like this: > > Camera::Camera() : ui(new Ui::Camera){ > ui->setupUi(this); > > QCameraViewfinderSettings cameraSettings; > cameraSettings.setMinimumFrameRate(25); > > camera = new QCamera( QCameraInfo::defaultCamera() ); > imageCapture = new QCameraImageCapture(camera); > > this->connect(imageCapture, &QCameraImageCapture::imageCaptured, this, > &Camera::imageCaptured); > > camera->setViewfinder(ui->viewfinder); > > captureTimer = new QTimer(this); > captureTimer->setInterval(40); > connect(captureTimer, SIGNAL(timeout()), this, SLOT(takePicture())); > captureTimer->start(); > > camera->start(); > } > > void Camera::imageCaptured(){ > cout << "IMAGE PROCESSED" << endl; /// THIS IS TRIGGERED THE FIRST > TIME AFTER 35 SECONDS > } > > void Camera::takePicture(){ > imageCapture->capture(); > } > > This happens on OSX with the default inbuilt cam. I have not tested it on > other OSes yet but is there way to speed this time up or is it even a bug I > am having here ? > > Thanks in advance, > best > > Alex > > > > -- > http://www.carot.de > Email : Alexander at Carot.de > Tel.: +49 (0)177 5719797 > _______________________________________________ _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
