130 lines
4.0 KiB
C++
130 lines
4.0 KiB
C++
#include "videoplayer.h"
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#include <QDir>
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#include <QTimer>
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VideoPlayer::VideoPlayer(QWidget *parent) :
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QWidget(parent)
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{
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player = new QMediaPlayer(this);
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connect(player, &QMediaPlayer::positionChanged,
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this, &VideoPlayer::updatePosition);
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connect(player, &QMediaPlayer::mediaStatusChanged,
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this, &VideoPlayer::mediaStatusChanged);
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connect(player, static_cast<void(QMediaPlayer::*)(QMediaPlayer::Error)>
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(&QMediaPlayer::error), this, &VideoPlayer::showError);
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}
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VideoPlayer::~VideoPlayer()
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{
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if(player != nullptr)
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{
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player->stop();
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player->deleteLater();
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player = nullptr;
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}
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}
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void VideoPlayer::setOutput(QGraphicsVideoItem *videoWidget, int duration)
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{
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video_Duration = duration;
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player->setVideoOutput(videoWidget);
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player->setMuted(true); //视频静音
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player->setPosition(1); //避免首次打开视频是黑屏
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player->play();
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}
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void VideoPlayer::setMediaFile(QString filePath)
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{
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m_filePath = filePath;
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player->setMedia(QMediaContent(QUrl::fromLocalFile(filePath)));
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}
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void VideoPlayer::updatePosition(qint64 position)
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{
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//因为用wps制作的视频用qmediaplayer去获取视频时长有问题，会在视频最后一帧停留很长时间，所以用ffmpeg获取视频时长，手动循环播放视频
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qDebug() << "position =" << position << "player->duration() = " << player->duration() << "duration = " << video_Duration;
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if (video_Duration || player->duration()) {
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if (position && position > (video_Duration > 0 ? video_Duration : player->duration())) {
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player->setMedia(QMediaContent(QUrl::fromLocalFile(m_filePath)));
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player->setPosition(1);
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player->play();
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} else if (position == 0 && player->duration()) { //有些wps做的视频播放到最后一帧会自己跳到0
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player->setMedia(QMediaContent(QUrl::fromLocalFile(m_filePath)));
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player->setPosition(1);
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player->play();
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} else if (position && position == video_Duration) {//视频当前播放帧数 = 视频总时长
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player->setMedia(QMediaContent(QUrl::fromLocalFile(m_filePath)));
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player->setPosition(1);
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player->play();
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}
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}
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}
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void VideoPlayer::mediaStatusChanged(QMediaPlayer::MediaStatus status)
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{
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switch (status) {
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case QMediaPlayer::UnknownMediaStatus:
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qDebug() << "UnknownMediaStatus!!!" ;
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break;
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case QMediaPlayer::NoMedia:
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qDebug() << "NoMedia!!!" ;
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break;
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case QMediaPlayer::BufferingMedia:
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qDebug() << "BufferingMedia!!!" ;
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break;
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case QMediaPlayer::BufferedMedia:
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qDebug() << "The player has fully buffered the current media!!!" ;
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break;
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case QMediaPlayer::LoadingMedia:
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qDebug() << "LoadingMedia!!!" ;
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break;
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case QMediaPlayer::StalledMedia:
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qDebug() << "StalledMedia!!!" ;
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break;
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case QMediaPlayer::EndOfMedia:
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qDebug() << "EndOfMedia!!!" ;
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// player->setPosition(0);
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// player->play();
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break;
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case QMediaPlayer::LoadedMedia:
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qDebug() << "LoadedMedia!!!" ;
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break;
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case QMediaPlayer::InvalidMedia:
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qDebug() << "InvalidMedia!!!" ;
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break;
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default: break;
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}
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}
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void VideoPlayer::showError(QMediaPlayer::Error error)
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{
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switch (error) {
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case QMediaPlayer::NoError:
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qDebug() << "没有错误！" ;
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break;
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case QMediaPlayer::ResourceError:
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qDebug() << "媒体资源无法被解析！";
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break;
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case QMediaPlayer::FormatError:
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qDebug() << "不支持该媒体格式！";
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break;
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case QMediaPlayer::NetworkError:
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qDebug() << "发生了一个网络错误！";
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break;
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case QMediaPlayer::AccessDeniedError:
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qDebug() << "没有播放权限！";
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break;
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case QMediaPlayer::ServiceMissingError:
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qDebug() << "没有发现有效的播放服务！";
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break;
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default: break;
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}
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}
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