void QMediaPlayerPrivate::loadPlaylist()
{
Q_Q(QMediaPlayer);
Q_ASSERT(pendingPlaylist.isNull());
// Do not load a playlist if there are more than MAX_NESTED_PLAYLISTS in the chain already,
// or if the playlist URL is already in the chain, i.e. do not allow recursive playlists and loops.
if (nestedPlaylists < MAX_NESTED_PLAYLISTS && !q->currentMedia().canonicalUrl().isEmpty() && !isInChain(q->currentMedia().canonicalUrl())) {
pendingPlaylist = QMediaContent(new QMediaPlaylist, q->currentMedia().canonicalUrl(), true);
QObject::connect(pendingPlaylist.playlist(), SIGNAL(loaded()), q, SLOT(_q_handlePlaylistLoaded()));
QObject::connect(pendingPlaylist.playlist(), SIGNAL(loadFailed()), q, SLOT(_q_handlePlaylistLoadFailed()));
pendingPlaylist.playlist()->load(pendingPlaylist.canonicalRequest());
} else if (playlist) {
playlist->next();
}
}
void QMediaPlayerPrivate::_q_updateMedia(const QMediaContent &media)
{
Q_Q(QMediaPlayer);
if (!control)
return;
// check if the current playlist is a top-level playlist
Q_ASSERT(playlist);
if (media.isNull() && playlist != rootMedia.playlist()) {
// switch back to parent playlist
QMediaPlaylist *pls = parentPlaylist(playlist);
Q_ASSERT(pls);
disconnectPlaylist();
playlist = pls;
connectPlaylist();
Q_ASSERT(!pendingPlaylist.playlist());
nestedPlaylists--;
Q_ASSERT(nestedPlaylists >= 0);
playlist->next();
return;
}
if (media.playlist()) {
if (nestedPlaylists < MAX_NESTED_PLAYLISTS) {
nestedPlaylists++;
Q_ASSERT(!pendingPlaylist.playlist());
// disconnect current playlist
disconnectPlaylist();
// new playlist signals are connected
// in the call to setPlaylist() in _q_handlePlaylistLoaded()
playlist = media.playlist();
emit q->currentMediaChanged(media);
_q_handlePlaylistLoaded();
return;
} else if (playlist) {
playlist->next();
}
return;
}
const QMediaPlayer::State currentState = state;
setMedia(media, 0);
if (!media.isNull()) {
switch (currentState) {
case QMediaPlayer::PlayingState:
control->play();
break;
case QMediaPlayer::PausedState:
control->pause();
break;
default:
break;
}
}
_q_stateChanged(control->state());
}