void QMediaPlayerPrivate::setPlaylistMedia()
{
// This function loads current playlist media into backend.
// If current media is a playlist, the function recursively
// loads media from the playlist.
// It also makes sure the correct playlist signals are connected.
Q_Q(QMediaPlayer);
if (playlist) {
connectPlaylist();
if (playlist->currentMedia().playlist()) {
if (nestedPlaylists < MAX_NESTED_PLAYLISTS) {
emit q->currentMediaChanged(playlist->currentMedia());
// rewind nested playlist to start
playlist->currentMedia().playlist()->setCurrentIndex(0);
nestedPlaylists++;
setPlaylist(playlist->currentMedia().playlist());
} else {
playlist->next();
}
return;
} else if (control != 0) {
// If we've just switched to a new playlist,
// then last emited currentMediaChanged was a playlist.
// Make sure we emit currentMediaChanged if new playlist has
// the same media as the previous one:
// sample.m3u
// test.wav -- processed by backend
// nested.m3u -- processed by frontend
// test.wav -- processed by backend,
// media is not changed,
// frontend needs to emit currentMediaChanged
bool isSameMedia = (control->media() == playlist->currentMedia());
control->setMedia(playlist->currentMedia(), 0);
if (isSameMedia) {
emit q->currentMediaChanged(control->media());
}
}
} else {
q->setMedia(QMediaContent(), 0);
}
}
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());
}
