|
|
| Line 79: |
Line 79: |
| | }; | | }; |
| | #endif | | #endif |
| − | </pre>
| |
| − |
| |
| − |
| |
| − | vlc_on_qt.cpp:
| |
| − | <pre>
| |
| − | /* libVLC and Qt sample code
| |
| − | * Copyright © 2009 Alexander Maringer <maringer@maringer-it.de>
| |
| − | */
| |
| − | #include "vlc_on_qt.h"
| |
| − |
| |
| − | #include <QVBoxLayout>
| |
| − | #include <QWidget>
| |
| − | #include <QSizePolicy>
| |
| − | #include <QPushButton>
| |
| − | #include <QTextEdit>
| |
| − | #include <QSlider>
| |
| − | #include <QCloseEvent>
| |
| − | #include <QTimer>
| |
| − | #include <QDebug>
| |
| − |
| |
| − | Player::Player()
| |
| − | : QWidget()
| |
| − | {
| |
| − | //mise en place des widgets
| |
| − | const char * const vlc_args[] = {
| |
| − | "-I", "dummy", /* Don't use any interface */
| |
| − | "--ignore-config", /* Don't use VLC's config */
| |
| − | "--extraintf=logger", //log anything
| |
| − | "--verbose=2", //be much more verbose then normal for debugging purpose
| |
| − | "--plugin-path=C:\\vlc-0.9.9-win32\\plugins\\" };
| |
| − |
| |
| − | _videoWidget=new QFrame(this);
| |
| − |
| |
| − | _volumeSlider=new QSlider(Qt::Horizontal,this);
| |
| − | _volumeSlider->setMaximum(100); //the volume is between 0 and 100
| |
| − | _volumeSlider->setToolTip("Audio slider");
| |
| − |
| |
| − | // Note: if you use streaming, there is no ability to use the position slider
| |
| − | _positionSlider=new QSlider(Qt::Horizontal,this);
| |
| − | _positionSlider->setMaximum(POSITION_RESOLUTION);
| |
| − |
| |
| − | QVBoxLayout *layout = new QVBoxLayout;
| |
| − | layout->addWidget(_videoWidget);
| |
| − | layout->addWidget(_positionSlider);
| |
| − | layout->addWidget(_volumeSlider);
| |
| − | setLayout(layout);
| |
| − |
| |
| − | _isPlaying=false;
| |
| − | poller=new QTimer(this);
| |
| − |
| |
| − | //Initialize an instance of vlc
| |
| − | //a structure for the exception is neede for this initalization
| |
| − | libvlc_exception_init(&_vlcexcep);
| |
| − |
| |
| − | //create a new libvlc instance
| |
| − | _vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args,&_vlcexcep); //tricky calculation of the char space used
| |
| − | raise (&_vlcexcep);
| |
| − |
| |
| − | // Create a media player playing environement
| |
| − | _mp = libvlc_media_player_new (_vlcinstance, &_vlcexcep);
| |
| − | raise (&_vlcexcep);
| |
| − |
| |
| − | //connect the two sliders to the corresponding slots (uses Qt's signal / slots technology)
| |
| − | connect(poller, SIGNAL(timeout()), this, SLOT(updateInterface()));
| |
| − | connect(_positionSlider, SIGNAL(sliderMoved(int)), this, SLOT(changePosition(int)));
| |
| − | connect(_volumeSlider, SIGNAL(sliderMoved(int)), this, SLOT(changeVolume(int)));
| |
| − |
| |
| − | poller->start(100); //start timer to trigger every 100 ms the updateInterface slot
| |
| − | }
| |
| − |
| |
| − | //desctructor
| |
| − | Player::~Player(){}
| |
| − |
| |
| − | void Player::playFile(QString file)
| |
| − | {
| |
| − | //the file has to be in one of the following formats /perhaps a little bit outdated)
| |
| − | /*
| |
| − | [file://]filename Plain media file
| |
| − | http://ip:port/file HTTP URL
| |
| − | ftp://ip:port/file FTP URL
| |
| − | mms://ip:port/file MMS URL
| |
| − | screen:// Screen capture
| |
| − | [dvd://][device][@raw_device] DVD device
| |
| − | [vcd://][device] VCD device
| |
| − | [cdda://][device] Audio CD device
| |
| − | udp:[[<source address>]@[<bind address>][:<bind port>]]
| |
| − | */
| |
| − |
| |
| − | /* Create a new LibVLC media descriptor */
| |
| − | _m = libvlc_media_new (_vlcinstance, file.toAscii(), &_vlcexcep);
| |
| − | raise(&_vlcexcep);
| |
| − |
| |
| − | libvlc_media_player_set_media (_mp, _m, &_vlcexcep);
| |
| − | raise(&_vlcexcep);
| |
| − |
| |
| − | // /!\ Please note /!\
| |
| − | //
| |
| − | // passing the widget to the lib shows vlc at which position it should show up
| |
| − | // vlc automatically resizes the video to the ´given size of the widget
| |
| − | // and it even resizes it, if the size changes at the playing
| |
| − |
| |
| − | /* Get our media instance to use our window */
| |
| − | libvlc_media_player_set_drawable( _mp, reinterpret_cast<unsigned int>(_videoWidget->winId()), &_vlcexcep );
| |
| − | raise(&_vlcexcep);
| |
| − |
| |
| − | /* Play */
| |
| − | libvlc_media_player_play (_mp, &_vlcexcep );
| |
| − | raise(&_vlcexcep);
| |
| − |
| |
| − | _isPlaying=true;
| |
| − | }
| |
| − |
| |
| − | void Player::changeVolume(int newVolume)
| |
| − | {
| |
| − | libvlc_exception_clear(&_vlcexcep);
| |
| − | libvlc_audio_set_volume (_vlcinstance,newVolume , &_vlcexcep);
| |
| − | raise(&_vlcexcep);
| |
| − | }
| |
| − |
| |
| − | void Player::changePosition(int newPosition)
| |
| − | {
| |
| − | libvlc_exception_clear(&_vlcexcep);
| |
| − | // It's possible, that the vlc doesn't play anything
| |
| − | // so check before
| |
| − | libvlc_media_t *curMedia = libvlc_media_player_get_media (_mp, &_vlcexcep);
| |
| − | libvlc_exception_clear(&_vlcexcep);
| |
| − | if (curMedia == NULL)
| |
| − | return;
| |
| − |
| |
| − | float pos=(newPosition)/POSITION_RESOLUTION;
| |
| − | libvlc_media_player_set_position (_mp, pos, &_vlcexcep);
| |
| − | raise(&_vlcexcep);
| |
| − | }
| |
| − |
| |
| − | void Player::updateInterface()
| |
| − | {
| |
| − | if(!_isPlaying)
| |
| − | return;
| |
| − |
| |
| − | // It's possible, that the vlc doesn't play anything
| |
| − | // so check before
| |
| − | libvlc_media_t *curMedia = libvlc_media_player_get_media (_mp, &_vlcexcep);
| |
| − | libvlc_exception_clear(&_vlcexcep);
| |
| − | if (curMedia == NULL)
| |
| − | return;
| |
| − |
| |
| − | //input sert a recuperer les info sur la lecture en cours
| |
| − | //input sert aussi a controller certains aspect de la lecture
| |
| − | //on recupere la position (entre 0.0f et 1.0f)
| |
| − |
| |
| − | float pos=libvlc_media_player_get_position (_mp, &_vlcexcep);
| |
| − | int siderPos=(int)(pos*(float)(POSITION_RESOLUTION));
| |
| − | _positionSlider->setValue(siderPos);
| |
| − | int volume=libvlc_audio_get_volume (_vlcinstance,&_vlcexcep);
| |
| − | _volumeSlider->setValue(volume);
| |
| − | }
| |
| − | void Player::raise(libvlc_exception_t * ex)
| |
| − | {
| |
| − | if (libvlc_exception_raised (ex))
| |
| − | {
| |
| − | fprintf (stderr, "error: %s\n", libvlc_exception_get_message(ex));
| |
| − | exit (-1);
| |
| − | }
| |
| − | }
| |
| | </pre> | | </pre> |
