Ip camera mjpg to QT Embedded app

[Remco]

Hello,

I'm trying to create a QT program to display the mjpg frames of my ip camera. For this i used QHttp without succes. On the internet i found out that it was also possible with QNetworkAccessManager. Now i've managed to show single images by using QNetworkReply and put it in a QPixmap. I'm sure it als must be possible for mjpg images but i can't figure out how.

Can anyone give me some advise. I can't use Opencv because finaly the application has to be written in QT embedded. If i'm right, i have to use the virtual framebuffer to show the mjpg images of the camera.

Below you can see my code.

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    m_netwManager = new QNetworkAccessManager(this);
    connect(m_netwManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(slot_netwManagerFinished(QNetworkReply*)));
    connect(m_netwManager,SIGNAL(authenticationRequired(QNetworkReply*,QAuthenticator*)),this,SLOT(slot_netwManagerFinished(QNetworkReply*,QAuthenticator*)));
}
 
void MainWindow::on_action_Download_triggered()
{
    QUrl url(ui->txtImageAddress->text());
    QNetworkRequest request(url);
    m_netwManager->get(request);
}
 
void MainWindow::slot_netwManagerFinished(QNetworkReply*,QAuthenticator* auth)
{
    auth->setUser("admin");
    auth->setPassword("admin");
}
 
void MainWindow::slot_netwManagerFinished(QNetworkReply *reply)
{
 
    if (reply->error() != QNetworkReply::NoError) {
        reply->deleteLater();
        return;
    }
 
    QString contentType = reply->header( QNetworkRequest::ContentTypeHeader ).toString();
 
    if (contentType == "image/jpeg")
    {
 
        QVariant redir = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
        if (redir.isValid()) {
            QUrl url = redir.toUrl();
            if (url.isRelative()) {
                url.setScheme(reply->url().scheme());
                url.setEncodedHost(reply->url().encodedHost());
            }
            QNetworkRequest req(url);
            m_netwManager->get(req);
            reply->deleteLater();
            return;
        }
 
        QByteArray jpegData = reply->readAll();
 
        QPixmap pixmap;
        pixmap.loadFromData(jpegData);
        ui->lblImage->setPixmap(pixmap);
 
        reply->deleteLater();
 
    }
    else
    {
       //VIDEO MJPG DATA
 
 
    }
}

MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    m_netwManager = new QNetworkAccessManager(this);
    connect(m_netwManager, SIGNAL(finished(QNetworkReply*)), this, SLOT(slot_netwManagerFinished(QNetworkReply*)));
    connect(m_netwManager,SIGNAL(authenticationRequired(QNetworkReply*,QAuthenticator*)),this,SLOT(slot_netwManagerFinished(QNetworkReply*,QAuthenticator*)));
}

void MainWindow::on_action_Download_triggered()
{
    QUrl url(ui->txtImageAddress->text());
    QNetworkRequest request(url);
    m_netwManager->get(request);
}

void MainWindow::slot_netwManagerFinished(QNetworkReply*,QAuthenticator* auth)
{
    auth->setUser("admin");
    auth->setPassword("admin");
}

void MainWindow::slot_netwManagerFinished(QNetworkReply *reply)
{

    if (reply->error() != QNetworkReply::NoError) {
        reply->deleteLater();
        return;
    }

    QString contentType = reply->header( QNetworkRequest::ContentTypeHeader ).toString();

    if (contentType == "image/jpeg")
    {

        QVariant redir = reply->attribute(QNetworkRequest::RedirectionTargetAttribute);
        if (redir.isValid()) {
            QUrl url = redir.toUrl();
            if (url.isRelative()) {
                url.setScheme(reply->url().scheme());
                url.setEncodedHost(reply->url().encodedHost());
            }
            QNetworkRequest req(url);
            m_netwManager->get(req);
            reply->deleteLater();
            return;
        }

        QByteArray jpegData = reply->readAll();

        QPixmap pixmap;
        pixmap.loadFromData(jpegData);
        ui->lblImage->setPixmap(pixmap);

        reply->deleteLater();

    }
    else
    {
       //VIDEO MJPG DATA


    }
}

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[AndresR8]

Use this widget:
https://github.com/jgehring/qmpwidge.../qmpwidget.cpp

install mplayer and use the rtsp option