怎么创建公司的个人网站,ps做的网站,企业网站建设浩森宇特,腾讯企业邮箱浙江服务中心在实现播放器的时候#xff0c;我们需要捕获键盘、鼠标事件进行视频快进、快退#xff0c;或者双击全屏/退出全屏窗口、鼠标右键弹出菜单栏。默认情况下#xff0c;在使用libVLC库的时候#xff0c;我们无法捕获这些事件#xff0c;因为我们将Qt的视频窗口传递给了libVLC。…在实现播放器的时候我们需要捕获键盘、鼠标事件进行视频快进、快退或者双击全屏/退出全屏窗口、鼠标右键弹出菜单栏。默认情况下在使用libVLC库的时候我们无法捕获这些事件因为我们将Qt的视频窗口传递给了libVLC。 libvlc_media_player_set_hwnd(vlc_mediaPlayer, (void *)ui.widgetShow-winId()); 但是libVLC提供了两个接口使得忽略了对鼠标键盘事件的处理让事件返回到原始Qt的widget上。 libvlc_video_set_mouse_input(vlc_mediaPlayer, 0);libvlc_video_set_key_input(vlc_mediaPlayer, 0); 好了知道了如何操作了之后下面开始实现代码。 首先打开文件的时候禁用鼠标、键盘事件并且设置视频窗口为Qt的Widget控件libvlc_media_player_set_hwnd。 void showWidget::slotOpenFile() {/*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(\\));vlc_base libvlc_new(0, NULL);vlc_media libvlc_media_new_path(vlc_base, filename.toUtf8().data());if (!vlc_media) {return;}// 创建libvlc实例和媒体播放器vlc_mediaPlayer libvlc_media_player_new_from_media(vlc_media);if (!vlc_mediaPlayer) {return;}// 等待元数据加载完成libvlc_media_parse(vlc_media);m_defalutRate libvlc_video_get_aspect_ratio(vlc_mediaPlayer);m_defalutCrop libvlc_video_get_crop_geometry(vlc_mediaPlayer);libvlc_video_set_mouse_input(vlc_mediaPlayer, 0);libvlc_video_set_key_input(vlc_mediaPlayer, 0);// 获取各种元数据const char *title libvlc_media_get_meta(vlc_media, libvlc_meta_Title);const char *artist libvlc_media_get_meta(vlc_media, libvlc_meta_Artist);const char *album libvlc_media_get_meta(vlc_media, libvlc_meta_Album);const char *url libvlc_media_get_meta(vlc_media, libvlc_meta_URL);const char *date libvlc_media_get_meta(vlc_media, libvlc_meta_Date);const char *lang libvlc_media_get_meta(vlc_media, libvlc_meta_Language);int duration libvlc_media_get_duration(vlc_media); // 获取时长单位毫秒qDebug(Title: %s, title ? title : N/A);qDebug(Artist: %s, artist ? artist : N/A);qDebug(Album: %s, album ? album : N/A);qDebug(Duration: %d ms, duration);qDebug(url: %s, url ? url : N/A);qDebug(date: %s, date ? date : N/A);qDebug(lang: %s, lang ? lang : N/A);libvlc_media_track_t **tracks;int track_count libvlc_media_tracks_get(vlc_media,tracks);for (unsigned i 0; i track_count; i) {libvlc_media_track_t* track tracks[i];// 显示轨道信息printf(Track #%u: %s\n, i, track-psz_description);// 这里可以获取到每一个轨道的信息比如轨道类型 track-i_type// 可能是 libvlc_track_video, libvlc_track_audio 或者 libvlc_track_text (字幕)if (track-i_type libvlc_track_video) {// 处理视频轨道信息qDebug(width %d,track-video-i_width);qDebug(height %d, track-video-i_height);qDebug(rate_num %d, track-video-i_frame_rate_num);qDebug(rate_den %d, track-video-i_frame_rate_den);}else if (track-i_type libvlc_track_audio) {// 处理音频轨道信息qDebug(channels %d, track-audio-i_channels);qDebug(rate %d, track-audio-i_rate);}else if (track-i_type libvlc_track_text) {// 处理字幕轨道信息}}//获取事件管理器libvlc_event_manager_t *em libvlc_media_player_event_manager(vlc_mediaPlayer);// 注册事件监听器libvlc_event_attach(em, libvlc_MediaPlayerTimeChanged, vlcEvents, this);libvlc_event_attach(em, libvlc_MediaPlayerEndReached, vlcEvents, this);libvlc_event_attach(em, libvlc_MediaPlayerStopped, vlcEvents, this);libvlc_event_attach(em, libvlc_MediaPlayerPlaying, vlcEvents, this);libvlc_event_attach(em, libvlc_MediaPlayerPaused, vlcEvents, this);libvlc_media_player_set_hwnd(vlc_mediaPlayer, (void *)ui.widgetShow-winId());QTimer::singleShot(1000, this, showWidget::slotPlay); } 然后鼠标右键显示菜单 代码实现 //.hQMenu *m_menu nullptr;QAction *m_video nullptr;QAction *m_scaleAction nullptr; //缩放QAction *m_aspectRatioAction nullptr; //宽高比QAction *m_cropAction nullptr; //裁剪QMenu *m_videoMenu nullptr;//.cpp//总菜单m_menu new QMenu(this);m_video m_menu-addAction(视频);//视频菜单m_videoMenu new QMenu(this);m_scaleAction m_videoMenu-addAction(缩放);m_aspectRatioAction m_videoMenu-addAction(宽高比);m_cropAction m_videoMenu-addAction(裁剪);m_video-setMenu(m_videoMenu);//宽高比菜单m_aspectRatioMenu new QMenu(this);m_aspectRatioAction-setMenu(m_aspectRatioMenu); 重写鼠标和键盘事件。 protected:virtual void mousePressEvent(QMouseEvent *event);virtual void mouseDoubleClickEvent(QMouseEvent *event);virtual void keyPressEvent(QKeyEvent *event); 鼠标双击全屏。 void showWidget::mouseDoubleClickEvent(QMouseEvent *event) {if (this-isFullScreen()){this-showNormal();}else{this-showFullScreen();} }键盘事件调节W、S键音量大小和space键暂停和播放。 void showWidget::keyPressEvent(QKeyEvent *event) {if (!vlc_mediaPlayer)return;int value ui.hSliderVolumn-value();if (event-key() Qt::Key_W) //添加音量{qDebug() up;slotValueChanged(value10);}else if (event-key() Qt::Key_S) //减小音量{slotValueChanged(value - 10);}else if (event-key() Qt::Key_Space){if (vlc_mediaPlayer libvlc_media_player_get_state(vlc_mediaPlayer) libvlc_Playing){libvlc_media_player_pause(vlc_mediaPlayer);}else if (vlc_mediaPlayer libvlc_media_player_get_state(vlc_mediaPlayer) libvlc_Paused){libvlc_media_player_play(vlc_mediaPlayer);}} }void showWidget::slotValueChanged(int value) {if (vlc_mediaPlayer)libvlc_audio_set_volume(vlc_mediaPlayer, value); } 鼠标点击弹出菜单。 void showWidget::mousePressEvent(QMouseEvent *event) {switch (event-button()){case Qt::RightButton://this-setWindowState(Qt::WindowMinimized);m_menu-exec(event-globalPos());break;default:QWidget::mousePressEvent(event);} } 更多参考 libVLC 事件机制-CSDN博客 libVLC windows开发环境搭建-CSDN博客 https://sunnnnnn666.blog.csdn.net/article/details/136854500 libVLC 元数据-CSDN博客 libVLC 添加图片和文本水印-CSDN博客 https://sunnnnnn666.blog.csdn.net/article/details/136920169 https://sunnnnnn666.blog.csdn.net/article/details/137023036