QMediaPlayer::setSourceDevice(...) does not work Qt 6.2 Alpha

• Qt 5.15 (work well)
  • https://doc.qt.io/qt-5.15/qmediaplayer.html#setMedia

  •   audioBuffer.setData( data, size );
      if( !audioBuffer.open( QIODevice::ReadOnly ) ) {
        return tr( "Couldn't open audio buffer for reading." );
      }
      player.setMedia( QMediaContent(), &audioBuffer );
      player.play();
    

• Qt 6.2 Alpha (not work)
  • https://doc-snapshots.qt.io/qt6-dev/qmediaplayer.html#setSourceDevice

  •     if (!audioBuffer.open(QIODeviceBase::ReadOnly)) {
            return tr("Couldn't open audio buffer for reading.");
        }    
        player.setSourceDevice(&audioBuffer, QUrl());
        player.play();

We are doing migration from Qt 5.15 to Qt 6.2.0 Alpha.
We try to replace player.setMedia( QMediaContent(), &audioBuffer ); with player.setSourceDevice(&audioBuffer, QUrl());

We compiled QtMultiMedia with the latest dev branch.