采用libvlc做一个视频播放器

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    //创建并初始化libvlc实例
    vlc_base=libvlc_new(0,nullptr);

    this->setWindowTitle("libvlc设计的视频播放器");
}


Widget::~Widget()
{
    delete ui;
}

//选择视频
void Widget::on_pushButton_open_clicked()
{
    /*选择文件*/
    QString filename=QFileDialog::getOpenFileName(this,"选择打开的文件","D:/",tr("*.*"));

    std::replace(filename.begin(), filename.end(), QChar('/'), QChar('\\'));
    qDebug()<<"播放的媒体:"<<filename;

    /*为特定文件路径创建媒体*/
    if(vlc_media)libvlc_media_release(vlc_media);
    vlc_media=libvlc_media_new_path(vlc_base,filename.toUtf8().data());
    if(vlc_media==nullptr)
    {
        qDebug()<<"libvlc_media_new_path 执行错误.";
        return;
    }

    /*根据给定的媒体对象创建一个播放器对象*/
    if(vlc_mediaPlayer)libvlc_media_player_release(vlc_mediaPlayer);
    vlc_mediaPlayer=libvlc_media_player_new_from_media(vlc_media);

    /*设置给予媒体播放器媒体输出的win32/win64窗口句柄*/
    libvlc_media_player_set_hwnd(vlc_mediaPlayer, (void *)ui->widget->winId());

    /*播放媒体文件*/
    if(vlc_mediaPlayer)libvlc_media_player_play(vlc_mediaPlayer);
}


//暂停与继续
void Widget::on_pushButton_pause_clicked()
{
    if(vlc_mediaPlayer)libvlc_media_player_pause(vlc_mediaPlayer);
}

//停止
void Widget::on_pushButton_stop_clicked()
{
    if(vlc_mediaPlayer)libvlc_media_player_stop(vlc_mediaPlayer);
}

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <vlc/vlc.h>
#include <QDebug>
#include <QFileDialog>
#include <QMoveEvent>


QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();

private slots:
    void on_pushButton_open_clicked();

    void on_pushButton_pause_clicked();

    void on_pushButton_stop_clicked();
private:
    Ui::Widget *ui;

    libvlc_instance_t *vlc_base=nullptr;
    libvlc_media_t *vlc_media=nullptr;
    libvlc_media_player_t *vlc_mediaPlayer=nullptr;

     Form *form;
};
#endif // WIDGET_H

QT       += core gui

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

INCLUDEPATH += $$PWD\VLC\sdk\include   #VLC头文件包含目录
INCLUDEPATH += $$PWD\VLC\sdk\include\vlc\plugins   #VLC头文件包含目录可选
INCLUDEPATH += $$PWD\VLC\sdk\include\vlc   #VLC头文件包含目录 可选
LIBS +=$$PWD\VLC\sdk\lib\libvlc.lib    #VLC库文件路径
LIBS +=$$PWD\VLC\sdk\lib\libvlccore.lib  #可选

SOURCES += \
    main.cpp \
    widget.cpp

HEADERS += \
    widget.h

FORMS += \
    widget.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target