void QMediaRecorderPrivate::restartCamera()
{
    //restart camera if it can't apply new settings in the Active state
    QCamera *camera = qobject_cast<QCamera*>(mediaObject);
    if (camera && camera->captureMode() == QCamera::CaptureVideo) {
        QMetaObject::invokeMethod(camera,
                                  "_q_preparePropertyChange",
                                  Qt::DirectConnection,
                                  Q_ARG(int, QCameraControl::VideoEncodingSettings));
    }
void tst_QCameraBackend::testCaptureMode()
{
    QCamera camera;

    QSignalSpy errorSignal(&camera, SIGNAL(error(QCamera::Error)));
    QSignalSpy stateChangedSignal(&camera, SIGNAL(stateChanged(QCamera::State)));
    QSignalSpy captureModeSignal(&camera, SIGNAL(captureModeChanged(QCamera::CaptureModes)));

    QCOMPARE(camera.captureMode(), QCamera::CaptureStillImage);

    if (!camera.isCaptureModeSupported(QCamera::CaptureVideo)) {
        camera.setCaptureMode(QCamera::CaptureVideo);
        QCOMPARE(camera.captureMode(), QCamera::CaptureStillImage);
        QSKIP("Video capture not supported");
    }

    camera.setCaptureMode(QCamera::CaptureVideo);
    QCOMPARE(camera.captureMode(), QCamera::CaptureVideo);
    QTRY_COMPARE(captureModeSignal.size(), 1);
    QCOMPARE(captureModeSignal.last().first().value<QCamera::CaptureModes>(), QCamera::CaptureVideo);
    captureModeSignal.clear();

    camera.load();
    QTRY_COMPARE(camera.status(), QCamera::LoadedStatus);
    //capture mode should still be video
    QCOMPARE(camera.captureMode(), QCamera::CaptureVideo);

    //it should be possible to switch capture mode in Loaded state
    camera.setCaptureMode(QCamera::CaptureStillImage);
    QTRY_COMPARE(captureModeSignal.size(), 1);
    QCOMPARE(captureModeSignal.last().first().value<QCamera::CaptureModes>(), QCamera::CaptureStillImage);
    captureModeSignal.clear();

    camera.setCaptureMode(QCamera::CaptureVideo);
    QTRY_COMPARE(captureModeSignal.size(), 1);
    QCOMPARE(captureModeSignal.last().first().value<QCamera::CaptureModes>(), QCamera::CaptureVideo);
    captureModeSignal.clear();

    camera.start();
    QTRY_COMPARE(camera.status(), QCamera::ActiveStatus);
    //capture mode should still be video
    QCOMPARE(camera.captureMode(), QCamera::CaptureVideo);

    stateChangedSignal.clear();
    //it should be possible to switch capture mode in Active state
    camera.setCaptureMode(QCamera::CaptureStillImage);
    //camera may leave Active status, but should return to Active
    QTest::qWait(10); //camera may leave Active status async
    QTRY_COMPARE(camera.status(), QCamera::ActiveStatus);
    QCOMPARE(camera.captureMode(), QCamera::CaptureStillImage);
    QVERIFY2(stateChangedSignal.isEmpty(), "camera should not change the state during capture mode changes");

    QCOMPARE(captureModeSignal.size(), 1);
    QCOMPARE(captureModeSignal.last().first().value<QCamera::CaptureModes>(), QCamera::CaptureStillImage);
    captureModeSignal.clear();

    camera.setCaptureMode(QCamera::CaptureVideo);
    //camera may leave Active status, but should return to Active
    QTest::qWait(10); //camera may leave Active status async
    QTRY_COMPARE(camera.status(), QCamera::ActiveStatus);
    QCOMPARE(camera.captureMode(), QCamera::CaptureVideo);

    QVERIFY2(stateChangedSignal.isEmpty(), "camera should not change the state during capture mode changes");

    QCOMPARE(captureModeSignal.size(), 1);
    QCOMPARE(captureModeSignal.last().first().value<QCamera::CaptureModes>(), QCamera::CaptureVideo);
    captureModeSignal.clear();

    camera.stop();
    QCOMPARE(camera.captureMode(), QCamera::CaptureVideo);
    camera.unload();
    QCOMPARE(camera.captureMode(), QCamera::CaptureVideo);

    QVERIFY2(errorSignal.isEmpty(), QString("Camera error: %1").arg(camera.errorString()).toLocal8Bit());
}