QAudioBufferOutput Class - audioBufferReceived (for music visualization)

[Wolfspirit]

Hi. I'm currently playing an mp3 via QMediaPlayer. Now I want to get access to the audiobuffer for drawing fancy bars etc while the music plays. So:
header-file:

class MainWindow : public QMainWindow {
   ...
   QMediaPlayer *my_playerB;
   QAudioOutput *my_audioOutputB;
   QAudioBufferOutput *audioBufferOutputB;
   ...
   private slots:
      void Oida(const QAudioBuffer &buffer);
      void Oida2();
}

Sourcecode:

void MainWindow::Oida(const QAudioBuffer &buffer) {
    qDebug() << "Oida";
}

void MainWindow::Oida2() {
    qDebug() << "Oida2";
}

void MainWindow::on_pushButtonOpenGL_clicked()
{
    my_playerB->setSource(QUrl::fromLocalFile("/home/thomas/Musik/coolmusic.mp3"));
    audioBufferOutputB = new QAudioBufferOutput();
    my_playerB->setAudioBufferOutput(audioBufferOutputB);
    connect(audioBufferOutputB, SIGNAL(audioBufferReceived(QAudioBuffer&)),
            this,       SLOT(Oida(QAudioBuffer&)));
    connect(my_playerB, SIGNAL(audioBufferOutputChanged()),
             this,       SLOT(Oida2()));
    my_playerB->play();
}

I'm getting "QObject::connect: No such signal QAudioBufferOutput::audioBufferReceived(QAudioBuffer&)". Why?
And both functions are not called. Again: Why?
I hope someone can help me. Thx in advance.

[Wolfspirit]

connect(audioBufferOutputB, SIGNAL(audioBufferReceived(QAudioBuffer)),
        this,       SLOT(Oida(QAudioBuffer)));

Got it. All I had to do was removing '&' and it works!

[SGaist]

Hi,

An additional suggestion: adopt the new connect style using function address rather than the macro based version. You will have compile time error rather than run-time warnings printed in case of an error.