qt 内嵌vlc 播放 rtsp 流

下面的代码用是的 vlc-1.1.5 的库
main.cpp

/* libVLC and Qt sample code
 * Copyright © 2009 Alexander Maringer <[e-mail]>
 */

#include "vlc_on_qt.h"
#include <QtGui/QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Player p;
    p.resize(640,480);
  // p.playFile("rtsp://192.168.9.111:8554/webcam"); // Replace with what you want to play
//    p.playFile("/media/soft/amusement/movie/aganzhengzhuan_01.rmvb");
    p.show();
    return a.exec();
}

vlc_on_qt.h

/* libVLC and Qt sample code
 * Copyright © 2009 Alexander Maringer <[e-mail]>
 */
#ifndef VLC_ON_QT_H
#define VLC_ON_QT_H

#include <vlc/vlc.h>

#include <QX11EmbedContainer>
#include <QWidget>
#include <QLabel>
#include <QLineEdit>

class QVBoxLayout;
class QPushButton;
class QTimer;
class QFrame;
class QSlider;

#define POSITION_RESOLUTION 10000

class Player : public QWidget
{
    Q_OBJECT
    QSlider *_positionSlider;
    QSlider *_volumeSlider;

    QLabel *labelPath;
    QLineEdit *lineEditPath;
    QPushButton *buttonBrowser;
    QPushButton *buttonPlay;
    QString filename;

    // [20101215 JG]
    // Tested on Linux OpenSuse and VLC 1.2.0. This version of VLC is not completely compatible with previous versions of VLC.
    // [20101201 Ondra Spilka]
    // on Linux/Ubuntu Lucid and VLC >= 1.0 (at least 1.1.5 was tested) XWindow handle have to be passed
    // therefore QX11EmbedContainer have to be used instead of QFrame
#ifdef Q_WS_X11
    QX11EmbedContainer *_videoWidget;
#else
    QFrame *_videoWidget;
#endif
    // [20101215 JG] If KDE is used like unique desktop environment, only use QFrame *_videoWidget;
    QTimer *poller;
    bool _isPlaying;
    //libvlc_exception_t _vlcexcep; // [20101215 JG] Used for versions prior to VLC 1.2.0.
    libvlc_instance_t *_vlcinstance;
    libvlc_media_player_t *_mp;
    libvlc_media_t *_m;

public:
    Player();
    ~Player();
    //void raise(libvlc_exception_t * ex); // [20101215 JG] Used for versions prior to VLC 1.2.0.

public slots:
    void playFile(QString file);
    void updateInterface();
    void changeVolume(int newVolume);
    void changePosition(int newPosition);
    void slotBrowser();
    void slotPlay();

};
#endif

vlc_on_qt.cpp

/* libVLC and Qt sample code
 * Copyright © 2009 Alexander Maringer <[e-mail]>
 */
#include "vlc_on_qt.h"

#include <QX11EmbedContainer>
#include <QVBoxLayout>
#include <QPushButton>
#include <QSlider>
#include <QTimer>
#include <QFrame>
#include <QFileDialog>
#include <QMessageBox>
#include <QDebug>

Player::Player()
: QWidget()
{
    //preparation of the vlc command
    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\\" };

#ifdef Q_WS_X11
    _videoWidget=new QX11EmbedContainer(this);
#else
    _videoWidget=new QFrame(this);
#endif
    // [20101215 JG] If KDE is used like unique desktop environment, only use _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);

    labelPath = new QLabel(tr("PATH"));
    lineEditPath = new QLineEdit();
    buttonBrowser = new QPushButton(tr("Browser"));
    buttonPlay = new QPushButton(tr("Play"));

    QGridLayout *gLayout = new QGridLayout();
    gLayout->addWidget(labelPath, 0, 0);
    gLayout->addWidget(lineEditPath, 0, 1);
    gLayout->addWidget(buttonBrowser, 0, 2);
    gLayout->addWidget(buttonPlay, 1, 2);

    QVBoxLayout *layout = new QVBoxLayout;
    layout->addWidget(_videoWidget);
    layout->addWidget(_positionSlider);
    layout->addWidget(_volumeSlider);
    layout->addLayout(gLayout);
    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); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    //create a new libvlc instance
    _vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args); //tricky calculation of the char space used
    //_vlcinstance=libvlc_new(sizeof(vlc_args) / sizeof(vlc_args[0]), vlc_args,&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    // Create a media player playing environement
    _mp = libvlc_media_player_new (_vlcinstance);
    //_mp = libvlc_media_player_new (_vlcinstance, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    //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

    connect(this->buttonBrowser, SIGNAL(clicked()), this, SLOT(slotBrowser()));
    connect(this->buttonPlay, SIGNAL(clicked()), this, SLOT(slotPlay()));
}

//desctructor
Player::~Player()
{
    /* Stop playing */
    libvlc_media_player_stop (_mp);
    //libvlc_media_player_stop (_mp, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    /* Free the media_player */
    libvlc_media_player_release (_mp);

    libvlc_release (_vlcinstance);
    //raise (&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
}

void Player::slotBrowser()
{
    filename = QFileDialog::getOpenFileName(this, tr("open file"), tr("/"), tr("file(*.avi *.rmvb *.h264)"));
    this->lineEditPath->setText(filename);
}

void Player::slotPlay()
{
    if (filename.isEmpty()) {
        filename = this->lineEditPath->text();

        if (filename.isEmpty()) {
            QMessageBox::warning(this, tr("play video"), tr("the path is null"));
        }
    }

    qDebug() << "************************************" << filename ;
    this->playFile(filename);
}

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_path(_vlcinstance, file.toAscii());
    //_m = libvlc_media_new (_vlcinstance, file.toAscii(), &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    libvlc_media_player_set_media (_mp, _m);
    //libvlc_media_player_set_media (_mp, _m, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    // 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 */
    #if defined(Q_OS_WIN)
        libvlc_media_player_set_drawable(_mp, reinterpret_cast<unsigned int>(_videoWidget->winId()));
        //libvlc_media_player_set_drawable(_mp, reinterpret_cast<unsigned int>(_videoWidget->winId()), &_vlcexcep ); // [20101215 JG] Used for versions prior to VLC 1.2.0.
        //libvlc_media_player_set_hwnd(_mp, _videoWidget->winId(), &_vlcexcep ); // for vlc 1.0
    #elif defined(Q_OS_MAC)
        libvlc_media_player_set_drawable(_mp, _videoWidget->winId());
        //libvlc_media_player_set_drawable(_mp, _videoWidget->winId(), &_vlcexcep ); // [20101215 JG] Used for versions prior to VLC 1.2.0.
        //libvlc_media_player_set_agl (_mp, _videoWidget->winId(), &_vlcexcep); // for vlc 1.0
    #else //Linux
        //[20101201 Ondrej Spilka] obsolete call on libVLC >=1.1.5
        //libvlc_media_player_set_drawable(_mp, _videoWidget->winId(), &_vlcexcep );
        //libvlc_media_player_set_xwindow(_mp, _videoWidget->winId(), &_vlcexcep ); // for vlc 1.0

     /* again note X11 handle on Linux is needed
        winID() returns X11 handle when QX11EmbedContainer us used */

        int windid = _videoWidget->winId();
        libvlc_media_player_set_xwindow (_mp, windid );

    #endif
    //raise(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    /* Play */
    libvlc_media_player_play (_mp);
    //libvlc_media_player_play (_mp, &_vlcexcep ); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.

    _isPlaying=true;
}

void Player::changeVolume(int newVolume)
{
    //libvlc_exception_clear(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    libvlc_audio_set_volume (_mp,newVolume);
    //libvlc_audio_set_volume (_vlcinstance,newVolume , &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
}

void Player::changePosition(int newPosition)
{
    //libvlc_exception_clear(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    // It's possible that the vlc doesn't play anything
    // so check before
    libvlc_media_t *curMedia = libvlc_media_player_get_media (_mp);
    //libvlc_media_t *curMedia = libvlc_media_player_get_media (_mp, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //libvlc_exception_clear(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    if (curMedia == NULL)
        return;

    float pos=(float)(newPosition)/(float)POSITION_RESOLUTION;
    libvlc_media_player_set_position (_mp, pos);
    //libvlc_media_player_set_position (_mp, pos, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //raise(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
}

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);
    //libvlc_media_t *curMedia = libvlc_media_player_get_media (_mp, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    //libvlc_exception_clear(&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    if (curMedia == NULL)
        return;

    float pos=libvlc_media_player_get_position (_mp);
    //float pos=libvlc_media_player_get_position (_mp, &_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    int siderPos=(int)(pos*(float)(POSITION_RESOLUTION));
    _positionSlider->setValue(siderPos);
    int volume=libvlc_audio_get_volume (_mp);
    //int volume=libvlc_audio_get_volume (_vlcinstance,&_vlcexcep); // [20101215 JG] Used for versions prior to VLC 1.2.0.
    _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);
    }
}*/ // [20101215 JG] Used for versions prior to VLC 1.2.0.

vlc_on_qt.pro

######################################################################
# Automatically generated by qmake (2.01a) Tue Apr 30 15:34:04 2013
######################################################################

TEMPLATE = app
TARGET =
DEPENDPATH += .
INCLUDEPATH += .

# Input
HEADERS += vlc_on_qt.h
SOURCES += main.cpp vlc_on_qt.cpp


INCLUDEPATH += /opt/vlc-1.1.5//include/
LIBS += -L/opt/vlc-1.1.5/lib -lvlc

参考：

关于vlc 的编译：http://blog.chinaunix.net/uid-20648944-id-3637113.html