QMediaMetaData获取媒体文件信息

//媒体信息
    connect(musicPlay->getMediaPlayer(), &QMediaPlayer::metaDataChanged, this, [=](){
        //QMediaPlayer对象将媒体文件准备好了
        if(musicPlay->getMediaPlayer()->isAvailable())
        {   
            //读取信息
            auto data = musicPlay->getMediaPlayer()->metaData();
            qDebug() << data.value(QMediaMetaData::Title).toString();
        }
    });