QCamera Android Crash

metaDom

@ QCameraViewfinder * viewFinder;
QCamera * camera;
QAbstractVideoSurface * surface;

QList<QCameraInfo> cameras = QCameraInfo::availableCameras();
foreach (const QCameraInfo &cameraInfo, cameras) {
    if(cameraInfo.deviceName()=="front")
    {
        camera = new QCamera(cameraInfo);
        qDebug() << "found cam";
    }
}

    viewFinder = new QCameraViewfinder;
    camera->setViewfinder(viewFinder);
    //ui->webBox->layout()->addWidget(viewFinder);
    viewFinder->show();
    camera->start();@

It does not matter if I use the QCameraViewfinder or QAbstractVideoSurface, once the camera is started, the application crashes. Any ideas are welcome :)

(void MainWindow::openScanner()): found cam
Fatal signal 11 (SIGSEGV) at 0x00000005 (code=1), thread 15692

metaDom

just tested, it crashes @ camera->setViewfinder(viewFinder);

SGaist

Hi,

So it's not when the camera starts, right ?

Are you sure that camera is really valid at this time ?

metaDom

It was a problem with the viewfinder/surface attached. Anyway now it crashes when the camera starts. I'm now trying to port the C++ version of the camera example to properly work on android, since I do not care about a live preview I'll try to re-render images as they come to the surface. If anyone already got a working example it would be much appreciated :)

SGaist

Just thought about something, IIRC you would need to use QML to have a preview on Android

metaDom

using QML is not an option right now, this should be purely C++/Qt. Grabbing single images from the surface and displaying them in a Label should do the trick :)