Auto Grant access to Mic and Camera with Qt WebEngine - c++

Question

I am building a home security system with RPi and WebRTC. I simply need a way to trigger a browser to open at a given URL and to auto-grant access to the Microphone and Camera. I had hoped to use the WebEngine library with PyQt but WebEngine is not supported in PyQt for RPi. So I am trying Qt itself now. Unfortunately I am not familiar with C++, so i am struggling.
The example here has 90% of what I need. The code is replicated below. I just need to tweak it to grant access to the mic and camera when it is requested. I am hoping someone can assist me with this?
#include <QApplication>
#include <QWebEngineView>
QUrl commandLineUrlArgument()
{
const QStringList args = QCoreApplication::arguments();
for (const QString &arg : args.mid(1)) {
if (!arg.startsWith(QLatin1Char('-')))
return QUrl::fromUserInput(arg);
}
return QUrl(QStringLiteral("https://www.qt.io"));
}
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication app(argc, argv);
QWebEngineView view;
view.setUrl(commandLineUrlArgument());
view.resize(1024, 750);
view.show();
return app.exec();
}

Answer 1

I answered this question but for PyQt5: Grant access to Cam & Mic using Python for PyQt WebEngine, I will only do a C ++ translation to Python, the base is the same.
#include <QApplication>
#include <QUrl>
#include <QWebEngineView>
class WebEnginePage: public QWebEnginePage{
Q_OBJECT
public:
WebEnginePage(QObject *parent = Q_NULLPTR):QWebEnginePage(parent){
connect(this, &WebEnginePage::featurePermissionRequested, this, &WebEnginePage::onFeaturePermissionRequested);
}
private Q_SLOTS:
void onFeaturePermissionRequested(const QUrl &securityOrigin, QWebEnginePage::Feature feature){
if(feature == QWebEnginePage::MediaAudioCapture
|| feature == QWebEnginePage::MediaVideoCapture
|| feature == QWebEnginePage::MediaAudioVideoCapture)
setFeaturePermission(securityOrigin, feature, QWebEnginePage::PermissionGrantedByUser);
else
setFeaturePermission(securityOrigin, feature, QWebEnginePage::PermissionDeniedByUser);
}
};
QUrl commandLineUrlArgument()
{
const QStringList args = QCoreApplication::arguments();
for (const QString &arg : args.mid(1)) {
if (!arg.startsWith(QLatin1Char('-')))
return QUrl::fromUserInput(arg);
}
return QUrl(QStringLiteral("https://www.qt.io"));
}
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QApplication app(argc, argv);
QWebEngineView view;
view.setPage(new WebEnginePage);
view.setUrl(commandLineUrlArgument());
view.resize(1024, 750);
view.show();
return app.exec();
}
#include "main.moc"