Need Help with GStreamer and Invalid URI in QT Multimedia

[xtiwix]

Hello, I am trying to create a replica of Itunes for my class. I am using taglib to get the tags of a ".mp3" file to populate my application. Also I am trying to create a player using Qtmultimedia but it seems to be giving some sort of error;
{
GStreamer; Unable to pause - "/home/xtiwix/Music/Drake Feat Aaliyah - Enough Said.mp3"
Error: "Invalid URI "/home/xtiwix/Music/Drake%20Feat%20Aaliyah%20-%20Enough%20Said.mp3"."
}

I have been working on this for quite a while now, and I seem not to be able to get it right, is there any hints, help or tips that might guide me in the right path.

here I attached the two function responsible for these tasks.
void MainWindow::create_player()
{
// Create new Media Player
m_player = new QMediaPlayer(this);

// Create new playlist
m_playlist = new QMediaPlaylist(this);

m_playlist->setPlaybackMode(QMediaPlaylist::Loop);

// boolean variable for functions
m_hasSong = false;

// Create time display of the media
m_timedisplay = new QLCDNumber;
m_timedisplay->display("00:00");

// Self defined functions
connect(m_player, SIGNAL(durationChanged(qint64)), SLOT(durationChanged(qint64)));

// the m_timedisplay updater
connect(m_player, SIGNAL(positionChanged(qint64)),this, SLOT(tick(qint64)));

// Song Progress slider
m_songslider = new QSlider(Qt::Horizontal, this);

// the song progress slider updater
connect(m_player, SIGNAL(positionChanged(qint64)),this, SLOT(progress(qint64)));

// HBoxLayout for songslider(progress) and timedisplay(progress)
m_songinfo_layout = new QHBoxLayout;
m_songinfo_layout->addWidget(m_songslider);
m_songinfo_layout->addWidget(m_timedisplay);

// Another Layout containing buttons and songinfo layout
m_toplayout = new QVBoxLayout;
m_topwidget = new QWidget;
m_toplayout->addLayout(m_switchingbutton_layout);
m_toplayout->addLayout(m_songinfo_layout);

// final product of the top layout
m_topwidget->setLayout(m_toplayout);

}

void MainWindow::traverseDirs(QString path)
{
QString key, val;
QStringList list;

// init listDirs with subdirectories of path
QDir dir(path);
dir.setFilter(QDir::AllDirs | QDir::NoDotAndDotDot);
QFileInfoList listDirs = dir.entryInfoList();

// init listFiles with all *.mp3 files in path

QDir files(path);
files.setFilter(QDir::Files);
files.setNameFilters(QStringList("*.mp3"));
QFileInfoList listFiles = files.entryInfoList();

for(int i=0; i < listFiles.size(); i++)
{
    // init list with default values: ""
    for(int j=0; j<=COLS; j++)
        list.insert(j, "");

    // store file pathname into 0th position in list
    QFileInfo fileInfo = listFiles.at(i);
    list.replace(PATH, fileInfo.filePath());

    qDebug()  << i << "   " << fileInfo.filePath();

    QString filePathASCII = fileInfo.filePath();

    QByteArray filePatharray = filePathASCII.toLocal8Bit();
    char* filePathchar = filePatharray.data();


            TagLib::FileRef f(filePathchar);
            TagLib::Tag *tag = f.tag();

  qDebug() << tag->genre().to8Bit(true).data();


            // process all song tags
            // Note: this uses audiere. Replace with function from Qt5 multimedia module
            for(int j=0; j<10; j++) {
                // get tag key and value
                key =  j;
                val =  j;
                if(val.isEmpty()  ) val = "Unknown";

                // store tag value in proper position in list
               list.replace(GENRE , tag->genre().to8Bit(true).data());
               list.replace(ARTIST, tag->artist().to8Bit(true).data());
               list.replace(ALBUM , tag->album().to8Bit(true).data());
               list.replace(TITLE , tag->title().to8Bit(true).data());
               
            }

            // append list (song data) into songlist m_listSongs;
            // uninitialized fields are empty strings
            m_listSongs << list;
        }

        // base case: no more subdirectories
        if(listDirs.size() == 0) return;

        // recursively descend through all subdirectories
        for(int i=0; i<listDirs.size(); i++) {
            QFileInfo fileInfo = listDirs.at(i);
            traverseDirs( fileInfo.filePath() );
        }

        // Populate QListWidgets and QTableWidget
        populateListWidgets(m_listSongs);
        populateTableWidget(m_listSongs);
        return;

}

[SGaist]

Hi and welcome to devnet,

IIRC, when passing local file to the media player, you need to use the "file://" scheme so it knows it has to look in to the file system.

Hope it helps

[Bob van de Vijver]

The solution from SGaist helped me out when I had the same error messages, many thanks!