Player::Player(QWidget *parent)
    : QWidget(parent)
    , videoWidget(0)
    , coverLabel(0)
    , slider(0)
#ifndef PLAYER_NO_COLOROPTIONS
    , colorDialog(0)
#endif
{
//! [create-objs]
    player = new QMediaPlayer(this);
    // owned by PlaylistModel
    playlist = new QMediaPlaylist();
    player->setPlaylist(playlist);
//! [create-objs]

    connect(player, SIGNAL(durationChanged(qint64)), SLOT(durationChanged(qint64)));
    connect(player, SIGNAL(positionChanged(qint64)), SLOT(positionChanged(qint64)));
    connect(player, SIGNAL(metaDataChanged()), SLOT(metaDataChanged()));
    connect(playlist, SIGNAL(currentIndexChanged(int)), SLOT(playlistPositionChanged(int)));
    connect(player, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)),
            this, SLOT(statusChanged(QMediaPlayer::MediaStatus)));
    connect(player, SIGNAL(bufferStatusChanged(int)), this, SLOT(bufferingProgress(int)));
    connect(player, SIGNAL(videoAvailableChanged(bool)), this, SLOT(videoAvailableChanged(bool)));
    connect(player, SIGNAL(error(QMediaPlayer::Error)), this, SLOT(displayErrorMessage()));

//! [2]
    videoWidget = new VideoWidget(this);
    player->setVideoOutput(videoWidget);

    playlistModel = new PlaylistModel(this);
    playlistModel->setPlaylist(playlist);
//! [2]

    playlistView = new QListView(this);
    playlistView->setModel(playlistModel);
    playlistView->setCurrentIndex(playlistModel->index(playlist->currentIndex(), 0));

    connect(playlistView, SIGNAL(activated(QModelIndex)), this, SLOT(jump(QModelIndex)));

    slider = new QSlider(Qt::Horizontal, this);
    slider->setRange(0, player->duration() / SLIDER_DIVISOR);

    labelDuration = new QLabel(this);
    connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(seek(int)));

    labelHistogram = new QLabel(this);
    labelHistogram->setText("Histogram:");
    histogram = new HistogramWidget(this);
    QHBoxLayout *histogramLayout = new QHBoxLayout;
    histogramLayout->addWidget(labelHistogram);
    histogramLayout->addWidget(histogram, 1);

    probe = new QVideoProbe(this);
    connect(probe, SIGNAL(videoFrameProbed(QVideoFrame)), histogram, SLOT(processFrame(QVideoFrame)));
    probe->setSource(player);

    QPushButton *openButton = new QPushButton(tr("Open"), this);

    connect(openButton, SIGNAL(clicked()), this, SLOT(open()));

    PlayerControls *controls = new PlayerControls(this);
    controls->setState(player->state());
    controls->setVolume(player->volume());
    controls->setMuted(controls->isMuted());

    connect(controls, SIGNAL(play()), player, SLOT(play()));
    connect(controls, SIGNAL(pause()), player, SLOT(pause()));
    connect(controls, SIGNAL(stop()), player, SLOT(stop()));
    connect(controls, SIGNAL(next()), playlist, SLOT(next()));
    connect(controls, SIGNAL(previous()), this, SLOT(previousClicked()));
    connect(controls, SIGNAL(changeVolume(int)), player, SLOT(setVolume(int)));
    connect(controls, SIGNAL(changeMuting(bool)), player, SLOT(setMuted(bool)));
    connect(controls, SIGNAL(changeRate(qreal)), player, SLOT(setPlaybackRate(qreal)));

    connect(controls, SIGNAL(stop()), videoWidget, SLOT(update()));

    connect(player, SIGNAL(stateChanged(QMediaPlayer::State)),
            controls, SLOT(setState(QMediaPlayer::State)));
    connect(player, SIGNAL(volumeChanged(int)), controls, SLOT(setVolume(int)));
    connect(player, SIGNAL(mutedChanged(bool)), controls, SLOT(setMuted(bool)));

    fullScreenButton = new QPushButton(tr("FullScreen"), this);
    fullScreenButton->setCheckable(true);

#ifndef PLAYER_NO_COLOROPTIONS
    colorButton = new QPushButton(tr("Color Options..."), this);
    colorButton->setEnabled(false);
    connect(colorButton, SIGNAL(clicked()), this, SLOT(showColorDialog()));
#endif

    QBoxLayout *displayLayout = new QHBoxLayout;
    displayLayout->addWidget(videoWidget, 2);
    displayLayout->addWidget(playlistView);

    QBoxLayout *controlLayout = new QHBoxLayout;
    controlLayout->setMargin(0);
    controlLayout->addWidget(openButton);
    controlLayout->addStretch(1);
    controlLayout->addWidget(controls);
    controlLayout->addStretch(1);
    controlLayout->addWidget(fullScreenButton);
#ifndef PLAYER_NO_COLOROPTIONS
    controlLayout->addWidget(colorButton);
#endif

    QBoxLayout *layout = new QVBoxLayout;
    layout->addLayout(displayLayout);
    QHBoxLayout *hLayout = new QHBoxLayout;
    hLayout->addWidget(slider);
    hLayout->addWidget(labelDuration);
    layout->addLayout(hLayout);
    layout->addLayout(controlLayout);
    layout->addLayout(histogramLayout);

    setLayout(layout);

    if (!player->isAvailable()) {
        QMessageBox::warning(this, tr("Service not available"),
                             tr("The QMediaPlayer object does not have a valid service.\n"\
                                "Please check the media service plugins are installed."));

        controls->setEnabled(false);
        playlistView->setEnabled(false);
        openButton->setEnabled(false);
#ifndef PLAYER_NO_COLOROPTIONS
        colorButton->setEnabled(false);
#endif
        fullScreenButton->setEnabled(false);
    }

    metaDataChanged();

    QStringList arguments = qApp->arguments();
    arguments.removeAt(0);
    addToPlaylist(arguments);
}
Exemplo n.º 2
0
Player::Player(QWidget *parent)
    : QWidget(parent)
    , videoWidget(0)
    , coverLabel(0)
    , slider(0)
#ifndef PLAYER_NO_COLOROPTIONS
    , colorDialog(0)
#endif
	//, ioDevice(0)
{
//! [create-objs]
    player = new QMediaPlayer(this);
    // owned by PlaylistModel
//! [create-objs]

    connect(player, SIGNAL(durationChanged(qint64)), SLOT(durationChanged(qint64)));
    connect(player, SIGNAL(positionChanged(qint64)), SLOT(positionChanged(qint64)));
    connect(player, SIGNAL(metaDataChanged()), SLOT(metaDataChanged()));
    connect(player, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)),
            this, SLOT(statusChanged(QMediaPlayer::MediaStatus)));
    connect(player, SIGNAL(bufferStatusChanged(int)), this, SLOT(bufferingProgress(int)));
    connect(player, SIGNAL(videoAvailableChanged(bool)), this, SLOT(videoAvailableChanged(bool)));
    connect(player, SIGNAL(error(QMediaPlayer::Error)), this, SLOT(displayErrorMessage()));

//! [2]
    videoWidget = new VideoWidget(this);
    player->setVideoOutput(videoWidget);
//! [2]

    slider = new QSlider(Qt::Horizontal, this);
    slider->setRange(0, player->duration() / 1000);

    labelDuration = new QLabel(this);
    connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(seek(int)));
    
    //QPushButton *openButton = new QPushButton(tr("Open"), this);

    //connect(openButton, SIGNAL(clicked()), this, SLOT(open()));

    PlayerControls *controls = new PlayerControls(this);
    controls->setState(player->state());
    controls->setVolume(player->volume());
    controls->setMuted(controls->isMuted());

    connect(controls, SIGNAL(play()), player, SLOT(play()));
    connect(controls, SIGNAL(pause()), player, SLOT(pause()));
    connect(controls, SIGNAL(stop()), player, SLOT(stop()));
    connect(controls, SIGNAL(changeVolume(int)), player, SLOT(setVolume(int)));
    connect(controls, SIGNAL(changeMuting(bool)), player, SLOT(setMuted(bool)));
    connect(controls, SIGNAL(changeRate(qreal)), player, SLOT(setPlaybackRate(qreal)));

    connect(controls, SIGNAL(stop()), videoWidget, SLOT(update()));

    connect(player, SIGNAL(stateChanged(QMediaPlayer::State)),
            controls, SLOT(setState(QMediaPlayer::State)));
    connect(player, SIGNAL(volumeChanged(int)), controls, SLOT(setVolume(int)));
    connect(player, SIGNAL(mutedChanged(bool)), controls, SLOT(setMuted(bool)));

    fullScreenButton = new QPushButton(tr("FullScreen"), this);
    fullScreenButton->setCheckable(true);

#ifndef PLAYER_NO_COLOROPTIONS
    colorButton = new QPushButton(tr("Color Options..."), this);
    colorButton->setEnabled(false);
    connect(colorButton, SIGNAL(clicked()), this, SLOT(showColorDialog()));
#endif

    QBoxLayout *displayLayout = new QHBoxLayout;
    videoWidget->setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Expanding);
    displayLayout->addWidget(videoWidget, 2);

    QBoxLayout *controlLayout = new QHBoxLayout;
    controlLayout->setMargin(0);
    //controlLayout->addWidget(openButton);
    controlLayout->addStretch(1);
    controlLayout->addWidget(controls);
    controlLayout->addStretch(1);
    controlLayout->addWidget(fullScreenButton);
#ifndef PLAYER_NO_COLOROPTIONS
    controlLayout->addWidget(colorButton);
#endif

    QBoxLayout *layout = new QVBoxLayout;
    layout->addLayout(displayLayout);
    QHBoxLayout *hLayout = new QHBoxLayout;
    hLayout->addWidget(slider);
    hLayout->addWidget(labelDuration);
    layout->addLayout(hLayout);
    layout->addLayout(controlLayout);

    setLayout(layout);

    if (!player->isAvailable()) {
        QMessageBox::warning(this, tr("Service not available"),
                             tr("The QMediaPlayer object does not have a valid service.\n"\
                                "Please check the media service plugins are installed."));

        controls->setEnabled(false);
        //openButton->setEnabled(false);
#ifndef PLAYER_NO_COLOROPTIONS
        colorButton->setEnabled(false);
#endif
        fullScreenButton->setEnabled(false);
    }

    metaDataChanged();
}