doc/libvlc/QtPlayer/player.cpp

   1 /******************************
   2  * Qt player using libVLC     *
   3  * By protonux                *
   4  *                            *
   5  * Under WTFPL                *
   6  ******************************/
   7 #include "player.h"
   8 #include <vlc/vlc.h>
   9
  10 #define qtu( i ) ((i).toUtf8().constData())
  11
  12 #include <QtGui>
  13
  14 Mwindow::Mwindow() {
  15     vlcPlayer = NULL;
  16
  17     /* Init libVLC */
  18     if((vlcObject = libvlc_new(0,NULL)) == NULL) {
  19         printf("Could not init libVLC");
  20         exit(1);
  21     }
  22
  23     /* Display libVLC version */
  24     printf("libVLC version: %s\n",libvlc_get_version());
  25
  26     /* Interface initialisation */
  27     initMenus();
  28     initComponents();
  29 }
  30
  31 Mwindow::~Mwindow() {
  32     if(vlcObject)
  33         libvlc_release(vlcObject);
  34 }
  35
  36 void Mwindow::initMenus() {
  37
  38     centralWidget = new QWidget;
  39
  40     videoWidget = new QWidget;
  41     videoWidget->setAutoFillBackground( true );
  42     QPalette plt = palette();
  43     plt.setColor( QPalette::Window, Qt::black );
  44     videoWidget->setPalette( plt );
  45
  46     QMenu *fileMenu = menuBar()->addMenu("&File");
  47     QMenu *editMenu = menuBar()->addMenu("&Edit");
  48
  49     QAction *Open = new QAction("&Open", this);
  50     QAction *Quit = new QAction("&Quit", this);
  51     QAction *playAc = new QAction("&Play/Pause", this);
  52
  53     Open->setShortcut(QKeySequence("Ctrl+O"));
  54     Quit->setShortcut(QKeySequence("Ctrl+Q"));
  55
  56     fileMenu->addAction(Open);
  57     fileMenu->addAction(Quit);
  58     editMenu->addAction(playAc);
  59
  60     connect(Open, SIGNAL(triggered()), this, SLOT(openFile()));
  61     connect(playAc, SIGNAL(triggered()), this, SLOT(play()));
  62     connect(Quit, SIGNAL(triggered()), qApp, SLOT(quit()));
  63 }
  64
  65 void Mwindow::initComponents() {
  66
  67     playBut = new QPushButton("Play");
  68     QObject::connect(playBut, SIGNAL(clicked()), this, SLOT(play()));
  69
  70     stopBut = new QPushButton("Stop");
  71     QObject::connect(stopBut, SIGNAL(clicked()), this, SLOT(stop()));
  72
  73     muteBut = new QPushButton("Mute");
  74     QObject::connect(muteBut, SIGNAL(clicked()), this, SLOT(mute()));
  75
  76     volumeSlider = new QSlider(Qt::Horizontal);
  77     QObject::connect(volumeSlider, SIGNAL(sliderMoved(int)), this, SLOT(changeVolume(int)));
  78     volumeSlider->setValue(80);
  79
  80     slider = new QSlider(Qt::Horizontal);
  81     slider->setMaximum(1000);
  82     QObject::connect(slider, SIGNAL(sliderMoved(int)), this, SLOT(changePosition(int)));
  83
  84     QTimer *timer = new QTimer(this);
  85     connect(timer, SIGNAL(timeout()), this, SLOT(updateInterface()));
  86     timer->start(100);
  87
  88     QHBoxLayout *layout = new QHBoxLayout;
  89     layout->addWidget(playBut);
  90     layout->addWidget(stopBut);
  91     layout->addWidget(muteBut);
  92     layout->addWidget(volumeSlider);
  93
  94     QVBoxLayout *layout2 = new QVBoxLayout;
  95     layout2->addWidget(videoWidget);
  96     layout2->addWidget(slider);
  97     layout2->addLayout(layout);
  98
  99     centralWidget->setLayout(layout2);
 100     setCentralWidget(centralWidget);
 101     resize( 600, 400);
 102 }
 103
 104 void Mwindow::openFile() {
 105     /* Just the basic file-select box */
 106     QString fileOpen = QFileDialog::getOpenFileName(this,tr("Load a file"), "~");
 107
 108     /* Stop if something is playing */
 109     if( vlcPlayer && libvlc_media_player_is_playing(vlcPlayer) )
 110         stop();
 111
 112     /* New Media */
 113     libvlc_media_t *vlcMedia = libvlc_media_new_path(vlcObject,qtu(fileOpen));
 114     if( !vlcMedia )
 115         return;
 116
 117     vlcPlayer = libvlc_media_player_new_from_media (vlcMedia);
 118     libvlc_media_release(vlcMedia);
 119
 120     /* Integrate the video in the interface */
 121 #if defined(Q_OS_MAC)
 122     libvlc_media_player_set_nsobject(vlcPlayer, (void *) videoWidget->winId());
 123 #elif defined(Q_OS_UNIX)
 124     libvlc_media_player_set_xwindow(vlcPlayer, videoWidget->winId());
 125 #elif defined(Q_OS_WIN)
 126     libvlc_media_player_set_hwnd(vlcPlayer, videoWidget->winId());
 127 #endif
 128
 129     /* And play */
 130     libvlc_media_player_play (vlcPlayer);
 131
 132     //Set vars and text correctly
 133     playBut->setText("Pause");
 134 }
 135
 136 void Mwindow::play() {
 137
 138     if(vlcPlayer)
 139     {
 140         if (libvlc_media_player_is_playing(vlcPlayer))
 141         {
 142             libvlc_media_player_pause(vlcPlayer);
 143             playBut->setText("Play");
 144         }
 145         else
 146         {
 147             libvlc_media_player_play(vlcPlayer);
 148             playBut->setText("Pause");
 149         }
 150     }
 151 }
 152
 153 int Mwindow::changeVolume(int vol) { //Called if you change the volume slider
 154
 155     if(vlcPlayer)
 156         return libvlc_audio_set_volume (vlcPlayer,vol);
 157
 158     return 0;
 159 }
 160
 161 void Mwindow::changePosition(int pos) { //Called if you change the position slider
 162
 163     if(vlcPlayer) //It segfault if vlcPlayer don't exist
 164         libvlc_media_player_set_position(vlcPlayer,(float)pos/(float)1000);
 165 }
 166
 167 void Mwindow::updateInterface() { //Update interface and check if song is finished
 168
 169     if(vlcPlayer) //It segfault if vlcPlayer don't exist
 170     {
 171         /* update the timeline */
 172         float pos = libvlc_media_player_get_position(vlcPlayer);
 173         int siderPos=(int)(pos*(float)(1000));
 174         slider->setValue(siderPos);
 175
 176         /* Stop the media */
 177         if (libvlc_media_player_get_state(vlcPlayer) == 6) { this->stop(); }
 178     }
 179 }
 180
 181 void Mwindow::stop() {
 182     if(vlcPlayer) {
 183         libvlc_media_player_stop(vlcPlayer);
 184         libvlc_media_player_release(vlcPlayer);
 185         slider->setValue(0);
 186         playBut->setText("Play");
 187     }
 188     vlcPlayer = NULL;
 189 }
 190
 191 void Mwindow::mute() {
 192     if(vlcPlayer) {
 193         if(volumeSlider->value() == 0) { //if already muted...
 194
 195                 this->changeVolume(80);
 196                 volumeSlider->setValue(80);
 197
 198         } else { //else mute volume
 199
 200                 this->changeVolume(0);
 201                 volumeSlider->setValue(0);
 202
 203         }
 204     }
 205 }
 206
 207 void Mwindow::closeEvent(QCloseEvent *event) {
 208     stop();
 209     event->accept();
 210 }