Qt 4.8: mediaplayer.cpp Example File (demos/qmediaplayer/mediaplayer.cpp)

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# mediaplayer.cpp Example File

demos/qmediaplayer/mediaplayer.cpp

     /****************************************************************************
     **
     ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the demonstration applications of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:LGPL$
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     ** accordance with the commercial license agreement provided with the
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     ** use the contact form at http://qt.digia.com/contact-us.
     **
     ** GNU Lesser General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU Lesser
     ** General Public License version 2.1 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.LGPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU Lesser General Public License version 2.1 requirements
     ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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     ** rights.  These rights are described in the Digia Qt LGPL Exception
     ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
     **
     ** GNU General Public License Usage
     ** Alternatively, this file may be used under the terms of the GNU
     ** General Public License version 3.0 as published by the Free Software
     ** Foundation and appearing in the file LICENSE.GPL included in the
     ** packaging of this file.  Please review the following information to
     ** ensure the GNU General Public License version 3.0 requirements will be
     ** met: http://www.gnu.org/copyleft/gpl.html.
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     **
     ** $QT_END_LICENSE$
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     ***************************************************************************/

     #include <QtGui>

     #define SLIDER_RANGE 8

     #include "mediaplayer.h"
     #include "ui_settings.h"

     #ifdef Q_OS_SYMBIAN
     #include <cdbcols.h>
     #include <cdblen.h>
     #include <commdb.h>
     #endif

     MediaVideoWidget::MediaVideoWidget(MediaPlayer *player, QWidget *parent) :
         Phonon::VideoWidget(parent), m_player(player), m_action(this)
     {
         m_action.setCheckable(true);
         m_action.setChecked(false);
         m_action.setShortcut(QKeySequence( Qt::AltModifier + Qt::Key_Return));
         m_action.setShortcutContext(Qt::WindowShortcut);
         connect(&m_action, SIGNAL(toggled(bool)), SLOT(setFullScreen(bool)));
         addAction(&m_action);
         setAcceptDrops(true);
     }

     void MediaVideoWidget::setFullScreen(bool enabled)
     {
         Phonon::VideoWidget::setFullScreen(enabled);
         emit fullScreenChanged(enabled);
     }

     void MediaVideoWidget::mouseDoubleClickEvent(QMouseEvent *e)
     {
         Phonon::VideoWidget::mouseDoubleClickEvent(e);
         setFullScreen(!isFullScreen());
     }

     void MediaVideoWidget::keyPressEvent(QKeyEvent *e)
     {
         if(!e->modifiers()) {
             // On non-QWERTY Symbian key-based devices, there is no space key.
             // The zero key typically is marked with a space character.
             if (e->key() == Qt::Key_Space || e->key() == Qt::Key_0) {
                 m_player->playPause();
                 e->accept();
                 return;
             }

             // On Symbian devices, there is no key which maps to Qt::Key_Escape
             // On devices which lack a backspace key (i.e. non-QWERTY devices),
             // the 'C' key maps to Qt::Key_Backspace
             else if (e->key() == Qt::Key_Escape || e->key() == Qt::Key_Backspace) {
                 setFullScreen(false);
                 e->accept();
                 return;
             }
         }
         Phonon::VideoWidget::keyPressEvent(e);
     }

     bool MediaVideoWidget::event(QEvent *e)
     {
         switch(e->type())
         {
         case QEvent::Close:
             //we just ignore the cose events on the video widget
             //this prevents ALT+F4 from having an effect in fullscreen mode
             e->ignore();
             return true;
         case QEvent::MouseMove:
     #ifndef QT_NO_CURSOR
             unsetCursor();
     #endif
             //fall through
         case QEvent::WindowStateChange:
             {
                 //we just update the state of the checkbox, in case it wasn't already
                 m_action.setChecked(windowState() & Qt::WindowFullScreen);
                 const Qt::WindowFlags flags = m_player->windowFlags();
                 if (windowState() & Qt::WindowFullScreen) {
                     m_timer.start(1000, this);
                 } else {
                     m_timer.stop();
     #ifndef QT_NO_CURSOR
                     unsetCursor();
     #endif
                 }
             }
             break;
         default:
             break;
         }

         return Phonon::VideoWidget::event(e);
     }

     void MediaVideoWidget::timerEvent(QTimerEvent *e)
     {
         if (e->timerId() == m_timer.timerId()) {
             //let's store the cursor shape
     #ifndef QT_NO_CURSOR
             setCursor(Qt::BlankCursor);
     #endif
         }
         Phonon::VideoWidget::timerEvent(e);
     }

     void MediaVideoWidget::dropEvent(QDropEvent *e)
     {
         m_player->handleDrop(e);
     }

     void MediaVideoWidget::dragEnterEvent(QDragEnterEvent *e) {
         if (e->mimeData()->hasUrls())
             e->acceptProposedAction();
     }

     MediaPlayer::MediaPlayer() :
             playButton(0), nextEffect(0), settingsDialog(0), ui(0),
                 m_AudioOutput(Phonon::VideoCategory),
                 m_videoWidget(new MediaVideoWidget(this))
     {
         setWindowTitle(tr("Media Player"));
         setContextMenuPolicy(Qt::CustomContextMenu);
         m_videoWidget->setContextMenuPolicy(Qt::CustomContextMenu);

         QSize buttonSize(34, 28);

         QPushButton *openButton = new QPushButton(this);

         openButton->setIcon(style()->standardIcon(QStyle::SP_DialogOpenButton));
         QPalette bpal;
         QColor arrowcolor = bpal.buttonText().color();
         if (arrowcolor == Qt::black)
             arrowcolor = QColor(80, 80, 80);
         bpal.setBrush(QPalette::ButtonText, arrowcolor);
         openButton->setPalette(bpal);

         rewindButton = new QPushButton(this);
         rewindButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipBackward));

         forwardButton = new QPushButton(this);
         forwardButton->setIcon(style()->standardIcon(QStyle::SP_MediaSkipForward));
         forwardButton->setEnabled(false);

         playButton = new QPushButton(this);
         playIcon = style()->standardIcon(QStyle::SP_MediaPlay);
         pauseIcon = style()->standardIcon(QStyle::SP_MediaPause);
         playButton->setIcon(playIcon);

         slider = new Phonon::SeekSlider(this);
         slider->setMediaObject(&m_MediaObject);
         volume = new Phonon::VolumeSlider(&m_AudioOutput);

         QVBoxLayout *vLayout = new QVBoxLayout(this);
         vLayout->setContentsMargins(8, 8, 8, 8);

         QHBoxLayout *layout = new QHBoxLayout();

         info = new QLabel(this);
         info->setMinimumHeight(70);
         info->setAcceptDrops(false);
         info->setMargin(2);
         info->setFrameStyle(QFrame::StyledPanel | QFrame::Sunken);
         info->setLineWidth(2);
         info->setAutoFillBackground(true);

         QPalette palette;
         palette.setBrush(QPalette::WindowText, Qt::white);
     #ifndef Q_WS_MAC
         openButton->setMinimumSize(54, buttonSize.height());
         rewindButton->setMinimumSize(buttonSize);
         forwardButton->setMinimumSize(buttonSize);
         playButton->setMinimumSize(buttonSize);
     #endif
         info->setStyleSheet("border-image:url(:/images/screen.png) ; border-width:3px");
         info->setPalette(palette);
         info->setText(tr("<center>No media</center>"));

         volume->setFixedWidth(120);

         layout->addWidget(openButton);
         layout->addWidget(rewindButton);
         layout->addWidget(playButton);
         layout->addWidget(forwardButton);

         layout->addStretch();
         layout->addWidget(volume);

         vLayout->addWidget(info);
         initVideoWindow();
         vLayout->addWidget(&m_videoWindow);
         QVBoxLayout *buttonPanelLayout = new QVBoxLayout();
         m_videoWindow.hide();
         buttonPanelLayout->addLayout(layout);

         timeLabel = new QLabel(this);
         progressLabel = new QLabel(this);
         QWidget *sliderPanel = new QWidget(this);
         QHBoxLayout *sliderLayout = new QHBoxLayout();
         sliderLayout->addWidget(slider);
         sliderLayout->addWidget(timeLabel);
         sliderLayout->addWidget(progressLabel);
         sliderLayout->setContentsMargins(0, 0, 0, 0);
         sliderPanel->setLayout(sliderLayout);

         buttonPanelLayout->addWidget(sliderPanel);
         buttonPanelLayout->setContentsMargins(0, 0, 0, 0);
     #ifdef Q_OS_MAC
         layout->setSpacing(4);
         buttonPanelLayout->setSpacing(0);
         info->setMinimumHeight(100);
         info->setFont(QFont("verdana", 15));
         // QStyle *flatButtonStyle = new QWindowsStyle;
         openButton->setFocusPolicy(Qt::NoFocus);
         // openButton->setStyle(flatButtonStyle);
         // playButton->setStyle(flatButtonStyle);
         // rewindButton->setStyle(flatButtonStyle);
         // forwardButton->setStyle(flatButtonStyle);
      #endif
         QWidget *buttonPanelWidget = new QWidget(this);
         buttonPanelWidget->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
         buttonPanelWidget->setLayout(buttonPanelLayout);
         vLayout->addWidget(buttonPanelWidget);

         QHBoxLayout *labelLayout = new QHBoxLayout();

         vLayout->addLayout(labelLayout);
         setLayout(vLayout);

         // Create menu bar:
         fileMenu = new QMenu(this);
         QAction *openFileAction = fileMenu->addAction(tr("Open &File..."));
         QAction *openUrlAction = fileMenu->addAction(tr("Open &Location..."));
     #ifdef Q_OS_SYMBIAN
         QAction *selectIAPAction = fileMenu->addAction(tr("Select &IAP..."));
         connect(selectIAPAction, SIGNAL(triggered(bool)), this, SLOT(selectIAP()));
     #endif
         QAction *const openLinkAction = fileMenu->addAction(tr("Open &RAM File..."));

         connect(openLinkAction, SIGNAL(triggered(bool)), this, SLOT(openRamFile()));

         fileMenu->addSeparator();
         QMenu *aspectMenu = fileMenu->addMenu(tr("&Aspect ratio"));
         QActionGroup *aspectGroup = new QActionGroup(aspectMenu);
         connect(aspectGroup, SIGNAL(triggered(QAction*)), this, SLOT(aspectChanged(QAction*)));
         aspectGroup->setExclusive(true);
         QAction *aspectActionAuto = aspectMenu->addAction(tr("Auto"));
         aspectActionAuto->setCheckable(true);
         aspectActionAuto->setChecked(true);
         aspectGroup->addAction(aspectActionAuto);
         QAction *aspectActionScale = aspectMenu->addAction(tr("Scale"));
         aspectActionScale->setCheckable(true);
         aspectGroup->addAction(aspectActionScale);
         QAction *aspectAction16_9 = aspectMenu->addAction(tr("16/9"));
         aspectAction16_9->setCheckable(true);
         aspectGroup->addAction(aspectAction16_9);
         QAction *aspectAction4_3 = aspectMenu->addAction(tr("4/3"));
         aspectAction4_3->setCheckable(true);
         aspectGroup->addAction(aspectAction4_3);

         QMenu *scaleMenu = fileMenu->addMenu(tr("&Scale mode"));
         QActionGroup *scaleGroup = new QActionGroup(scaleMenu);
         connect(scaleGroup, SIGNAL(triggered(QAction*)), this, SLOT(scaleChanged(QAction*)));
         scaleGroup->setExclusive(true);
         QAction *scaleActionFit = scaleMenu->addAction(tr("Fit in view"));
         scaleActionFit->setCheckable(true);
         scaleActionFit->setChecked(true);
         scaleGroup->addAction(scaleActionFit);
         QAction *scaleActionCrop = scaleMenu->addAction(tr("Scale and crop"));
         scaleActionCrop->setCheckable(true);
         scaleGroup->addAction(scaleActionCrop);

         m_fullScreenAction = fileMenu->addAction(tr("Full screen video"));
         m_fullScreenAction->setCheckable(true);
         m_fullScreenAction->setEnabled(false); // enabled by hasVideoChanged
         bool b = connect(m_fullScreenAction, SIGNAL(toggled(bool)), m_videoWidget, SLOT(setFullScreen(bool)));
         Q_ASSERT(b);
         b = connect(m_videoWidget, SIGNAL(fullScreenChanged(bool)), m_fullScreenAction, SLOT(setChecked(bool)));
         Q_ASSERT(b);

         fileMenu->addSeparator();
         QAction *settingsAction = fileMenu->addAction(tr("&Settings..."));

         // Setup signal connections:
         connect(rewindButton, SIGNAL(clicked()), this, SLOT(rewind()));
         //connect(openButton, SIGNAL(clicked()), this, SLOT(openFile()));
         openButton->setMenu(fileMenu);

         connect(playButton, SIGNAL(clicked()), this, SLOT(playPause()));
         connect(forwardButton, SIGNAL(clicked()), this, SLOT(forward()));
         //connect(openButton, SIGNAL(clicked()), this, SLOT(openFile()));
         connect(settingsAction, SIGNAL(triggered(bool)), this, SLOT(showSettingsDialog()));
         connect(openUrlAction, SIGNAL(triggered(bool)), this, SLOT(openUrl()));
         connect(openFileAction, SIGNAL(triggered(bool)), this, SLOT(openFile()));

         connect(m_videoWidget, SIGNAL(customContextMenuRequested(const QPoint &)), SLOT(showContextMenu(const QPoint &)));
         connect(this, SIGNAL(customContextMenuRequested(const QPoint &)), SLOT(showContextMenu(const QPoint &)));
         connect(&m_MediaObject, SIGNAL(metaDataChanged()), this, SLOT(updateInfo()));
         connect(&m_MediaObject, SIGNAL(totalTimeChanged(qint64)), this, SLOT(updateTime()));
         connect(&m_MediaObject, SIGNAL(tick(qint64)), this, SLOT(updateTime()));
         connect(&m_MediaObject, SIGNAL(finished()), this, SLOT(finished()));
         connect(&m_MediaObject, SIGNAL(stateChanged(Phonon::State,Phonon::State)), this, SLOT(stateChanged(Phonon::State,Phonon::State)));
         connect(&m_MediaObject, SIGNAL(bufferStatus(int)), this, SLOT(bufferStatus(int)));
         connect(&m_MediaObject, SIGNAL(hasVideoChanged(bool)), this, SLOT(hasVideoChanged(bool)));

         rewindButton->setEnabled(false);
         playButton->setEnabled(false);
         setAcceptDrops(true);

         m_audioOutputPath = Phonon::createPath(&m_MediaObject, &m_AudioOutput);
         Phonon::createPath(&m_MediaObject, m_videoWidget);

         resize(minimumSizeHint());
     }

     void MediaPlayer::stateChanged(Phonon::State newstate, Phonon::State oldstate)
     {
         Q_UNUSED(oldstate);

         if (oldstate == Phonon::LoadingState) {
             QRect videoHintRect = QRect(QPoint(0, 0), m_videoWindow.sizeHint());
             QRect newVideoRect = QApplication::desktop()->screenGeometry().intersected(videoHintRect);
             if (!m_smallScreen) {
                 if (m_MediaObject.hasVideo()) {
                     // Flush event que so that sizeHint takes the
                     // recently shown/hidden m_videoWindow into account:
                     qApp->processEvents();
                     resize(sizeHint());
                 } else
                     resize(minimumSize());
             }
         }

         switch (newstate) {
             case Phonon::ErrorState:
                 if (m_MediaObject.errorType() == Phonon::FatalError) {
                     playButton->setEnabled(false);
                     rewindButton->setEnabled(false);
                 } else {
                     m_MediaObject.pause();
                 }
                 QMessageBox::warning(this, "Phonon Mediaplayer", m_MediaObject.errorString(), QMessageBox::Close);
                 break;

             case Phonon::StoppedState:
                 m_videoWidget->setFullScreen(false);
                 // Fall through
             case Phonon::PausedState:
                 playButton->setIcon(playIcon);
                 if (m_MediaObject.currentSource().type() != Phonon::MediaSource::Invalid){
                     playButton->setEnabled(true);
                     rewindButton->setEnabled(true);
                 } else {
                     playButton->setEnabled(false);
                     rewindButton->setEnabled(false);
                 }
                 break;
             case Phonon::PlayingState:
                 playButton->setEnabled(true);
                 playButton->setIcon(pauseIcon);
                 if (m_MediaObject.hasVideo())
                     m_videoWindow.show();
                 // Fall through
             case Phonon::BufferingState:
                 rewindButton->setEnabled(true);
                 break;
             case Phonon::LoadingState:
                 rewindButton->setEnabled(false);
                 break;
         }

     }

     void MediaPlayer::initSettingsDialog()
     {
         settingsDialog = new QDialog(this);
         ui = new Ui_settings();
         ui->setupUi(settingsDialog);

         connect(ui->brightnessSlider, SIGNAL(valueChanged(int)), this, SLOT(setBrightness(int)));
         connect(ui->hueSlider, SIGNAL(valueChanged(int)), this, SLOT(setHue(int)));
         connect(ui->saturationSlider, SIGNAL(valueChanged(int)), this, SLOT(setSaturation(int)));
         connect(ui->contrastSlider , SIGNAL(valueChanged(int)), this, SLOT(setContrast(int)));
         connect(ui->aspectCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(setAspect(int)));
         connect(ui->scalemodeCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(setScale(int)));

         ui->brightnessSlider->setValue(int(m_videoWidget->brightness() * SLIDER_RANGE));
         ui->hueSlider->setValue(int(m_videoWidget->hue() * SLIDER_RANGE));
         ui->saturationSlider->setValue(int(m_videoWidget->saturation() * SLIDER_RANGE));
         ui->contrastSlider->setValue(int(m_videoWidget->contrast() * SLIDER_RANGE));
         ui->aspectCombo->setCurrentIndex(m_videoWidget->aspectRatio());
         ui->scalemodeCombo->setCurrentIndex(m_videoWidget->scaleMode());
         connect(ui->effectButton, SIGNAL(clicked()), this, SLOT(configureEffect()));

     #ifdef Q_WS_X11
         //Cross fading is not currently implemented in the GStreamer backend
         ui->crossFadeSlider->setVisible(false);
         ui->crossFadeLabel->setVisible(false);
         ui->crossFadeLabel1->setVisible(false);
         ui->crossFadeLabel2->setVisible(false);
         ui->crossFadeLabel3->setVisible(false);
     #endif
         ui->crossFadeSlider->setValue((int)(2 * m_MediaObject.transitionTime() / 1000.0f));

         // Insert audio devices:
         QList<Phonon::AudioOutputDevice> devices = Phonon::BackendCapabilities::availableAudioOutputDevices();
         for (int i=0; i<devices.size(); i++){
             QString itemText = devices[i].name();
             if (!devices[i].description().isEmpty()) {
                 itemText += QString::fromLatin1(" (%1)").arg(devices[i].description());
             }
             ui->deviceCombo->addItem(itemText);
             if (devices[i] == m_AudioOutput.outputDevice())
                 ui->deviceCombo->setCurrentIndex(i);
         }

         // Insert audio effects:
         ui->audioEffectsCombo->addItem(tr("<no effect>"));
         QList<Phonon::Effect *> currEffects = m_audioOutputPath.effects();
         Phonon::Effect *currEffect = currEffects.size() ? currEffects[0] : 0;
         QList<Phonon::EffectDescription> availableEffects = Phonon::BackendCapabilities::availableAudioEffects();
         for (int i=0; i<availableEffects.size(); i++){
             ui->audioEffectsCombo->addItem(availableEffects[i].name());
             if (currEffect && availableEffects[i] == currEffect->description())
                 ui->audioEffectsCombo->setCurrentIndex(i+1);
         }
         connect(ui->audioEffectsCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(effectChanged()));

     }

     void MediaPlayer::setVolume(qreal volume)
     {
         m_AudioOutput.setVolume(volume);
     }

     void MediaPlayer::setSmallScreen(bool smallScreen)
     {
         m_smallScreen = smallScreen;
     }

     void MediaPlayer::effectChanged()
     {
         int currentIndex = ui->audioEffectsCombo->currentIndex();
         if (currentIndex) {
             QList<Phonon::EffectDescription> availableEffects = Phonon::BackendCapabilities::availableAudioEffects();
             Phonon::EffectDescription chosenEffect = availableEffects[currentIndex - 1];

             QList<Phonon::Effect *> currEffects = m_audioOutputPath.effects();
             Phonon::Effect *currentEffect = currEffects.size() ? currEffects[0] : 0;

             // Deleting the running effect will stop playback, it is deleted when removed from path
             if (nextEffect && !(currentEffect && (currentEffect->description().name() == nextEffect->description().name())))
                 delete nextEffect;

             nextEffect = new Phonon::Effect(chosenEffect);
         }
         ui->effectButton->setEnabled(currentIndex);
     }

     void MediaPlayer::showSettingsDialog()
     {
         const bool hasPausedForDialog = playPauseForDialog();

         if (!settingsDialog)
             initSettingsDialog();

         float oldBrightness = m_videoWidget->brightness();
         float oldHue = m_videoWidget->hue();
         float oldSaturation = m_videoWidget->saturation();
         float oldContrast = m_videoWidget->contrast();
         Phonon::VideoWidget::AspectRatio oldAspect = m_videoWidget->aspectRatio();
         Phonon::VideoWidget::ScaleMode oldScale = m_videoWidget->scaleMode();
         int currentEffect = ui->audioEffectsCombo->currentIndex();
         settingsDialog->exec();

         if (settingsDialog->result() == QDialog::Accepted){
             m_MediaObject.setTransitionTime((int)(1000 * float(ui->crossFadeSlider->value()) / 2.0f));
             QList<Phonon::AudioOutputDevice> devices = Phonon::BackendCapabilities::availableAudioOutputDevices();
             m_AudioOutput.setOutputDevice(devices[ui->deviceCombo->currentIndex()]);
             QList<Phonon::Effect *> currEffects = m_audioOutputPath.effects();
             QList<Phonon::EffectDescription> availableEffects = Phonon::BackendCapabilities::availableAudioEffects();

             if (ui->audioEffectsCombo->currentIndex() > 0){
                 Phonon::Effect *currentEffect = currEffects.size() ? currEffects[0] : 0;
                 if (!currentEffect || currentEffect->description() != nextEffect->description()){
                     foreach(Phonon::Effect *effect, currEffects) {
                         m_audioOutputPath.removeEffect(effect);
                         delete effect;
                     }
                     m_audioOutputPath.insertEffect(nextEffect);
                 }
             } else {
                 foreach(Phonon::Effect *effect, currEffects) {
                     m_audioOutputPath.removeEffect(effect);
                     delete effect;
                     nextEffect = 0;
                 }
             }
         } else {
             // Restore previous settings
             m_videoWidget->setBrightness(oldBrightness);
             m_videoWidget->setSaturation(oldSaturation);
             m_videoWidget->setHue(oldHue);
             m_videoWidget->setContrast(oldContrast);
             m_videoWidget->setAspectRatio(oldAspect);
             m_videoWidget->setScaleMode(oldScale);
             ui->audioEffectsCombo->setCurrentIndex(currentEffect);
         }

         if (hasPausedForDialog)
             m_MediaObject.play();
     }

     void MediaPlayer::initVideoWindow()
     {
         QVBoxLayout *videoLayout = new QVBoxLayout();
         videoLayout->addWidget(m_videoWidget);
         videoLayout->setContentsMargins(0, 0, 0, 0);
         m_videoWindow.setLayout(videoLayout);
         m_videoWindow.setMinimumSize(100, 100);
     }

     void MediaPlayer::configureEffect()
     {
         if (!nextEffect)
             return;

         QList<Phonon::Effect *> currEffects = m_audioOutputPath.effects();
         const QList<Phonon::EffectDescription> availableEffects = Phonon::BackendCapabilities::availableAudioEffects();
         if (ui->audioEffectsCombo->currentIndex() > 0) {
             Phonon::EffectDescription chosenEffect = availableEffects[ui->audioEffectsCombo->currentIndex() - 1];

             QDialog effectDialog;
             effectDialog.setWindowTitle(tr("Configure effect"));
             QVBoxLayout *topLayout = new QVBoxLayout(&effectDialog);

             QLabel *description = new QLabel("<b>Description:</b><br>" + chosenEffect.description(), &effectDialog);
             description->setWordWrap(true);
             topLayout->addWidget(description);

             QScrollArea *scrollArea = new QScrollArea(&effectDialog);
             topLayout->addWidget(scrollArea);

             QVariantList savedParamValues;
             foreach(Phonon::EffectParameter param, nextEffect->parameters()) {
                 savedParamValues << nextEffect->parameterValue(param);
             }

             QWidget *scrollWidget = new Phonon::EffectWidget(nextEffect);
             scrollWidget->setMinimumWidth(320);
             scrollWidget->setContentsMargins(10, 10, 10,10);
             scrollArea->setWidget(scrollWidget);

             QDialogButtonBox *bbox = new QDialogButtonBox(QDialogButtonBox::Ok | QDialogButtonBox::Cancel, Qt::Horizontal, &effectDialog);
             connect(bbox->button(QDialogButtonBox::Ok), SIGNAL(clicked()), &effectDialog, SLOT(accept()));
             connect(bbox->button(QDialogButtonBox::Cancel), SIGNAL(clicked()), &effectDialog, SLOT(reject()));
             topLayout->addWidget(bbox);

             effectDialog.exec();

             if (effectDialog.result() != QDialog::Accepted) {
                 //we need to restore the parameters values
                 int currentIndex = 0;
                 foreach(Phonon::EffectParameter param, nextEffect->parameters()) {
                     nextEffect->setParameterValue(param, savedParamValues.at(currentIndex++));
                 }

             }
         }
     }

     void MediaPlayer::handleDrop(QDropEvent *e)
     {
         QList<QUrl> urls = e->mimeData()->urls();
         if (e->proposedAction() == Qt::MoveAction){
             // Just add to the queue:
             for (int i=0; i<urls.size(); i++)
                 m_MediaObject.enqueue(Phonon::MediaSource(urls[i].toLocalFile()));
         } else {
             // Create new queue:
             m_MediaObject.clearQueue();
             if (urls.size() > 0) {
                 QString fileName = urls[0].toLocalFile();
                 QDir dir(fileName);
                 if (dir.exists()) {
                     dir.setFilter(QDir::Files);
                     QStringList entries = dir.entryList();
                     if (entries.size() > 0) {
                         setFile(fileName + QDir::separator() +  entries[0]);
                         for (int i=1; i< entries.size(); ++i)
                             m_MediaObject.enqueue(fileName + QDir::separator() + entries[i]);
                     }
                 } else {
                     setFile(fileName);
                     for (int i=1; i<urls.size(); i++)
                         m_MediaObject.enqueue(Phonon::MediaSource(urls[i].toLocalFile()));
                 }
             }
         }
         forwardButton->setEnabled(m_MediaObject.queue().size() > 0);
         m_MediaObject.play();
     }

     void MediaPlayer::dropEvent(QDropEvent *e)
     {
         if (e->mimeData()->hasUrls() && e->proposedAction() != Qt::LinkAction) {
             e->acceptProposedAction();
             handleDrop(e);
         } else {
             e->ignore();
         }
     }

     void MediaPlayer::dragEnterEvent(QDragEnterEvent *e)
     {
         dragMoveEvent(e);
     }

     void MediaPlayer::dragMoveEvent(QDragMoveEvent *e)
     {
         if (e->mimeData()->hasUrls()) {
             if (e->proposedAction() == Qt::CopyAction || e->proposedAction() == Qt::MoveAction){
                 e->acceptProposedAction();
             }
         }
     }

     void MediaPlayer::playPause()
     {
         if (m_MediaObject.state() == Phonon::PlayingState)
             m_MediaObject.pause();
         else {
             if (m_MediaObject.currentTime() == m_MediaObject.totalTime())
                 m_MediaObject.seek(0);
             m_MediaObject.play();
         }
     }

     void MediaPlayer::setFile(const QString &fileName)
     {
         setWindowTitle(fileName.right(fileName.length() - fileName.lastIndexOf('/') - 1));
         m_MediaObject.setCurrentSource(Phonon::MediaSource(fileName));
         m_MediaObject.play();
     }

     void MediaPlayer::setLocation(const QString& location)
     {
         setWindowTitle(location.right(location.length() - location.lastIndexOf('/') - 1));
         m_MediaObject.setCurrentSource(Phonon::MediaSource(QUrl::fromEncoded(location.toUtf8())));
         m_MediaObject.play();
     }

     bool MediaPlayer::playPauseForDialog()
     {
         // If we're running on a small screen, we want to pause the video when
         // popping up dialogs. We neither want to tamper with the state if the
         // user has paused.
         if (m_smallScreen && m_MediaObject.hasVideo()) {
             if (Phonon::PlayingState == m_MediaObject.state()) {
                 m_MediaObject.pause();
                 return true;
             }
         }
         return false;
     }

     void MediaPlayer::openFile()
     {
         const bool hasPausedForDialog = playPauseForDialog();

         QStringList fileNames = QFileDialog::getOpenFileNames(this, QString(),
                                                               QDesktopServices::storageLocation(QDesktopServices::MusicLocation));

         if (hasPausedForDialog)
             m_MediaObject.play();

         m_MediaObject.clearQueue();
         if (fileNames.size() > 0) {
             QString fileName = fileNames[0];
             setFile(fileName);
             for (int i=1; i<fileNames.size(); i++)
                 m_MediaObject.enqueue(Phonon::MediaSource(fileNames[i]));
         }
         forwardButton->setEnabled(m_MediaObject.queue().size() > 0);
     }

     void MediaPlayer::bufferStatus(int percent)
     {
         if (percent == 100)
             progressLabel->setText(QString());
         else {
             QString str = QString::fromLatin1("(%1%)").arg(percent);
             progressLabel->setText(str);
         }
     }

     void MediaPlayer::setSaturation(int val)
     {
         m_videoWidget->setSaturation(val / qreal(SLIDER_RANGE));
     }

     void MediaPlayer::setHue(int val)
     {
         m_videoWidget->setHue(val / qreal(SLIDER_RANGE));
     }

     void MediaPlayer::setAspect(int val)
     {
         m_videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatio(val));
     }

     void MediaPlayer::setScale(int val)
     {
         m_videoWidget->setScaleMode(Phonon::VideoWidget::ScaleMode(val));
     }

     void MediaPlayer::setBrightness(int val)
     {
         m_videoWidget->setBrightness(val / qreal(SLIDER_RANGE));
     }

     void MediaPlayer::setContrast(int val)
     {
         m_videoWidget->setContrast(val / qreal(SLIDER_RANGE));
     }

     void MediaPlayer::updateInfo()
     {
         int maxLength = 30;
         QString font = "<font color=#ffeeaa>";
         QString fontmono = "<font family=\"monospace,courier new\" color=#ffeeaa>";

         QMap <QString, QString> metaData = m_MediaObject.metaData();
         QString trackArtist = metaData.value("ARTIST");
         if (trackArtist.length() > maxLength)
             trackArtist = trackArtist.left(maxLength) + "...";

         QString trackTitle = metaData.value("TITLE");
         int trackBitrate = metaData.value("BITRATE").toInt();

         QString fileName;
         if (m_MediaObject.currentSource().type() == Phonon::MediaSource::Url) {
             fileName = m_MediaObject.currentSource().url().toString();
         } else {
             fileName = m_MediaObject.currentSource().fileName();
             fileName = fileName.right(fileName.length() - fileName.lastIndexOf('/') - 1);
             if (fileName.length() > maxLength)
                 fileName = fileName.left(maxLength) + "...";
         }

         QString title;
         if (!trackTitle.isEmpty()) {
             if (trackTitle.length() > maxLength)
                 trackTitle = trackTitle.left(maxLength) + "...";
             title = "Title: " + font + trackTitle + "<br></font>";
         } else if (!fileName.isEmpty()) {
             if (fileName.length() > maxLength)
                 fileName = fileName.left(maxLength) + "...";
             title = font + fileName + "</font>";
             if (m_MediaObject.currentSource().type() == Phonon::MediaSource::Url) {
                 title.prepend("Url: ");
             } else {
                 title.prepend("File: ");
             }
         }

         QString artist;
         if (!trackArtist.isEmpty())
             artist = "Artist:  " + font + trackArtist + "</font>";

         QString bitrate;
         if (trackBitrate != 0)
             bitrate = "<br>Bitrate:  " + font + QString::number(trackBitrate/1000) + "kbit</font>";

         info->setText(title + artist + bitrate);
     }

     void MediaPlayer::updateTime()
     {
         long len = m_MediaObject.totalTime();
         long pos = m_MediaObject.currentTime();
         QString timeString;
         if (pos || len)
         {
             int sec = pos/1000;
             int min = sec/60;
             int hour = min/60;
             int msec = pos;

             QTime playTime(hour%60, min%60, sec%60, msec%1000);
             sec = len / 1000;
             min = sec / 60;
             hour = min / 60;
             msec = len;

             QTime stopTime(hour%60, min%60, sec%60, msec%1000);
             QString timeFormat = "m:ss";
             if (hour > 0)
                 timeFormat = "h:mm:ss";
             timeString = playTime.toString(timeFormat);
             if (len)
                 timeString += " / " + stopTime.toString(timeFormat);
         }
         timeLabel->setText(timeString);
     }

     void MediaPlayer::rewind()
     {
         m_MediaObject.seek(0);
     }

     void MediaPlayer::forward()
     {
         QList<Phonon::MediaSource> queue = m_MediaObject.queue();
         if (queue.size() > 0) {
             m_MediaObject.setCurrentSource(queue[0]);
             forwardButton->setEnabled(queue.size() > 1);
             m_MediaObject.play();
         }
     }

     void MediaPlayer::openUrl()
     {
         QSettings settings;
         settings.beginGroup(QLatin1String("BrowserMainWindow"));
         QString sourceURL = settings.value("location").toString();
         bool ok = false;
         sourceURL = QInputDialog::getText(this, tr("Open Location"), tr("Please enter a valid address here:"), QLineEdit::Normal, sourceURL, &ok);
         if (ok && !sourceURL.isEmpty()) {
             setLocation(sourceURL);
             settings.setValue("location", sourceURL);
         }
     }

     /*!
      \since 4.6
      */
     void MediaPlayer::openRamFile()
     {
         QSettings settings;
         settings.beginGroup(QLatin1String("BrowserMainWindow"));

         const QStringList fileNameList(QFileDialog::getOpenFileNames(this,
                                                                       QString(),
                                                                       settings.value("openRamFile").toString(),
                                                                       QLatin1String("RAM files (*.ram)")));

         if (fileNameList.isEmpty())
             return;

         QFile linkFile;
         QList<QUrl> list;
         QByteArray sourceURL;
         for (int i = 0; i < fileNameList.count(); i++ ) {
             linkFile.setFileName(fileNameList[i]);
             if (linkFile.open(QIODevice::ReadOnly | QIODevice::Text)) {
                 while (!linkFile.atEnd()) {
                     sourceURL = linkFile.readLine().trimmed();
                     if (!sourceURL.isEmpty()) {
                         const QUrl url(QUrl::fromEncoded(sourceURL));
                         if (url.isValid())
                             list.append(url);
                     }
                 }
                 linkFile.close();
             }
         }

         if (!list.isEmpty()) {
             m_MediaObject.clearQueue();
             setLocation(list[0].toString());
             for (int i = 1; i < list.count(); i++)
                 m_MediaObject.enqueue(Phonon::MediaSource(list[i]));
             m_MediaObject.play();
         }

         forwardButton->setEnabled(!m_MediaObject.queue().isEmpty());
         settings.setValue("openRamFile", fileNameList[0]);
     }

     void MediaPlayer::finished()
     {
     }

     void MediaPlayer::showContextMenu(const QPoint &p)
     {
         fileMenu->popup(m_videoWidget->isFullScreen() ? p : mapToGlobal(p));
     }

     void MediaPlayer::scaleChanged(QAction *act)
     {
         if (act->text() == tr("Scale and crop"))
             m_videoWidget->setScaleMode(Phonon::VideoWidget::ScaleAndCrop);
         else
             m_videoWidget->setScaleMode(Phonon::VideoWidget::FitInView);
     }

     void MediaPlayer::aspectChanged(QAction *act)
     {
         if (act->text() == tr("16/9"))
             m_videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatio16_9);
         else if (act->text() == tr("Scale"))
             m_videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatioWidget);
         else if (act->text() == tr("4/3"))
             m_videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatio4_3);
         else
             m_videoWidget->setAspectRatio(Phonon::VideoWidget::AspectRatioAuto);
     }

     void MediaPlayer::hasVideoChanged(bool bHasVideo)
     {
         info->setVisible(!bHasVideo);
         m_videoWindow.setVisible(bHasVideo);
         m_fullScreenAction->setEnabled(bHasVideo);
     }

     #ifdef Q_OS_SYMBIAN
     void MediaPlayer::selectIAP()
     {
         TRAPD(err, selectIAPL());
         if (KErrNone != err)
             QMessageBox::warning(this, "Phonon Mediaplayer", "Error selecting IAP", QMessageBox::Close);
     }

     void MediaPlayer::selectIAPL()
     {
         QVariant currentIAPValue = m_MediaObject.property("InternetAccessPointName");
         QString currentIAPString = currentIAPValue.toString();
         bool ok = false;
         CCommsDatabase *commsDb = CCommsDatabase::NewL(EDatabaseTypeIAP);
         CleanupStack::PushL(commsDb);
         commsDb->ShowHiddenRecords();
         CCommsDbTableView* view = commsDb->OpenTableLC(TPtrC(IAP));
         QStringList items;
         TInt currentIAP = 0;
         for (TInt l = view->GotoFirstRecord(), i = 0; l != KErrNotFound; l = view->GotoNextRecord(), i++) {
            TBuf<KCommsDbSvrMaxColumnNameLength> iapName;
            view->ReadTextL(TPtrC(COMMDB_NAME), iapName);
            QString iapString = QString::fromUtf16(iapName.Ptr(), iapName.Length());
            items << iapString;
            if (iapString == currentIAPString)
                currentIAP = i;
         }
         currentIAPString = QInputDialog::getItem(this, tr("Select Access Point"), tr("Select Access Point"), items, currentIAP, false, &ok);
         if (ok)
             m_MediaObject.setProperty("InternetAccessPointName", currentIAPString);
         CleanupStack::PopAndDestroy(2); //commsDB, view
     }
     #endif