Playing audio using thread

jsulm

@goshantry said in Playing audio using thread:

also player->deleteLater(); always crashes the application no matter where i put it

That's because player has a parent and parent deletes its children when it is deleted, so you have a double delete. Do not pass "this" to player as parent (or do not call delete later).
And why do you try to call deleteLater BEFORE you actually use it?! You should do it when you don't need it anymore.
See https://doc.qt.io/qt-5/objecttrees.html

kuzulis

AFAIK, QtMM is not designed to use in separate threads (look to QMediaPlayer source code).

goshantry

I was reading about QPointers and I tried the following

QPointer<QMediaPlayer> player = new QMediaPlayer(this);

    //player = new QMediaPlayer(this);

the part which I wrote in comments works fine
The part with QPointer crashes my application

It comes in the following function

void QMediaPlayer::setMedia(const QMediaContent &media, QIODevice *stream)
{
    Q_D(QMediaPlayer);
    stop();

    QMediaContent oldMedia = d->rootMedia;
    d->disconnectPlaylist();
    d->playlist = 0;
    d->rootMedia = media;
    d->nestedPlaylists = 0;

    if (oldMedia != media)
        emit mediaChanged(d->rootMedia);

    if (media.playlist()) {
        // reset playlist to the 1st item
        media.playlist()->setCurrentIndex(0);
        d->setPlaylist(media.playlist());
    } else {
        d->setMedia(media, stream);
    }
}

I get the segmentation fault error and the program crashes

jsulm

@goshantry said in Playing audio using thread:

I get the segmentation fault error

Where exactly?

goshantry

@jsulm the current debugger location is on the starting brackets of the setmedia function.