QT 使用Vlc API实现简易播放器

#include "vlcplaywidget.h" #include "CqCommon.h" #include <QDebug> CVlcPlayWidget::CVlcPlayWidget(QWidget *parent) : QWidget(parent) { setAutoFillBackground(true); setPalette(QPalette(QColor(0, 255, 255))); m_pVBoxLayout = new QVBoxLayout(this); m_pVBoxLayout->setObjectName(QString::fromUtf8("verticalLayout")); m_pVlcWidget = new QWidget(); m_pVBoxLayout->addWidget(m_pVlcWidget); m_pHBoxLayout = new QHBoxLayout(); m_pHBoxLayout->setObjectName(QString::fromUtf8("horizontalLayout")); m_pMediaPath = new QLineEdit(this); m_pMediaPath->setObjectName(QString::fromUtf8("lineEdit")); m_pHBoxLayout->addWidget(m_pMediaPath); m_pPlayBtn = new QPushButton(tr("play"), this); m_pPlayBtn->setObjectName(QString::fromUtf8("pushButton")); m_pHBoxLayout->addWidget(m_pPlayBtn); m_pVBoxLayout->addLayout(m_pHBoxLayout); connect(m_pPlayBtn, SIGNAL(clicked()), this, SLOT(play())); initVlc(); } CVlcPlayWidget::~CVlcPlayWidget() { SAFE_DELETE(m_pVBoxLayout); SAFE_DELETE(m_pHBoxLayout); SAFE_DELETE(m_pVlcWidget); SAFE_DELETE(m_pMediaPath); SAFE_DELETE(m_pPlayBtn); unInitVlc(); } /****************************************************************************** ** 调用vlc播放 ** 获取视频文件名进行播放 ******************************************************************************/ void CVlcPlayWidget::play() { if (m_pMediaPath == Q_NULLPTR) { return; } QString strMediaFile(m_pMediaPath->text()); if (strMediaFile.isEmpty()) { return; } while (libvlc_media_player_is_playing(m_pLibMp) == 1) { CQ_DEBUG() << "VideoLabelManage: is playing"; libvlc_media_player_stop(m_pLibMp); CqCommon::sleep(1); } libvlc_media_t *pLibvlcM = libvlc_media_new_path(m_pLibInst, strMediaFile.toStdString().c_str()); libvlc_media_player_set_media(m_pLibMp, pLibvlcM); libvlc_media_release(pLibvlcM); libvlc_media_player_play(m_pLibMp); } /****************************************************************************** ** 初始化Vlc ******************************************************************************/ void CVlcPlayWidget::initVlc() { const char *szVlcArgs[] = {"--ignore-config", "--network-caching=500", "--verbose=0"}; //"--longhelp", //"--advanced"}; m_pLibInst = libvlc_new(sizeof(szVlcArgs) / sizeof(szVlcArgs[0]), szVlcArgs); m_pLibMp = libvlc_media_player_new(m_pLibInst); libvlc_media_player_set_hwnd(m_pLibMp, reinterpret_cast<void *>(m_pVlcWidget->winId())); // libvlc忽略鼠标及键盘消息，由QWidget处理 libvlc_video_set_mouse_input(m_pLibMp, 0); libvlc_video_set_key_input(m_pLibMp, 0); // libvlc_video_set_scale(m_pLibvlcMp, 0.0f); libvlc_video_set_aspect_ratio(m_pLibMp, "16:9"); } /****************************************************************************** ** 去初始化Vlc ******************************************************************************/ void CVlcPlayWidget::unInitVlc() { if (m_pLibMp != Q_NULLPTR) { while (libvlc_media_player_is_playing(m_pLibMp) == 1) { libvlc_media_player_stop(m_pLibMp); CqCommon::sleep(1); } libvlc_media_player_release(m_pLibMp); m_pLibMp = Q_NULLPTR; } if (m_pLibInst != Q_NULLPTR) { libvlc_release(m_pLibInst); m_pLibInst = Q_NULLPTR; } }