基于QT和VisualStudio的慕影音乐播放器（源代码）-计算机专业精品毕业设计和课程设计

#include "MYPlay.h" #include <QDebug> #include <QSettings> #include <QFileInfo> #include <QPointer> #include "MYDemuxThread.h" #include "MYVideoOutput.h" #include "MYSubTitle.h" static QScopedPointer<MYDemuxThread> dt; static QScopedPointer<MYSubTitle> st; MYPlay::MYPlay() { dt.reset(new MYDemuxThread); st.reset(new MYSubTitle); dt->Start(); startTimer(40); setBackGround(NULL); setVideoPath(NULL); setSubTitlePath(NULL); } MYPlay::~MYPlay() { qDebug()<<"close"; if(m_mOpenSuccess) { QSettings *settingIni = new QSettings("setting.ini",QSettings::IniFormat); qDebug()<<m_strTheVideoPath; settingIni->setValue("Progress/" + m_strTheVideoPath,dt->pts); delete settingIni; } dt->Close(); } void MYPlay::testFunc() { setDemoNum(demoNum() + 1); } //打开线程，传输文件路径 void MYPlay::urlPass(QString url) { MYVideoOutput* video =qobject_cast<MYVideoOutput*>(source()); qDebug() << (video == nullptr) <<endl; m_strTheVideoPath = url; if(video != nullptr) { QFileInfo fileInfo(url); QString subTitleP = url.left(url.length() - fileInfo.suffix().length()); QSettings *settingIni = new QSettings("setting.ini",QSettings::IniFormat); QString saveProgress = settingIni->value("Progress/" + url).toString(); qDebug()<<saveProgress; delete settingIni; //qDebug()<<subTitleP; fileInfo = QFileInfo(subTitleP+"srt"); //打开视频时自动查找视频所在文件夹有对应名称的无字幕文件，有则打开 if(fileInfo.exists()) { st->Open(fileInfo.absoluteFilePath()); } else qDebug()<<"there is no srt file"; //if(fileInfo.exists()) //st->Open(fileInfo); if(!dt->Open(url.toLocal8Bit(),video)) return; if(saveProgress != "") dt->Seek(saveProgress.toDouble() / (double)dt->totalMs); } qDebug() << url; setIsPlay(!dt->isPause); setOpenSuccess(dt->getOpenSuccess()); } //播放进度条 void MYPlay::posFind(double value) { double pos = ((double)(int)(((double)dt->pts / (double)dt->totalMs) * 1000)) / 1000; double newValue = ((double)(int)(value * 1000)) / 1000; qDebug() << "pos value = " << pos; dt->Seek(newValue); } void MYPlay::timerEvent(QTimerEvent *e) { //if (isSliderPress)return; setTestNum(m_mTestNum + 1); long long total = dt->totalMs; //qDebug()<<dt->pts; int currentTime = (int)dt->pts; //qDebug()<<st->isOpen(); if(st->isOpen()) { if(!(st->nodeStartTime() <= currentTime && st->nodeEndTime() >= currentTime) || (st->nodeEndTime() == st->nodeStartTime())) //如果已经读取到现在的节点则没必要在read，或者处于刚开始时需要执行read if(st->Read(currentTime)) setSubTitleText(st->text()); else setSubTitleText(""); } if (total > 0) { double pos = ((double)(int)(((double)dt->pts / (double)total) * 1000)) / 1000; //保留三位小数，后面置0，方便比较 setPosNum(pos); } } //播放暂停 void MYPlay::playOrPause() { bool isPause = !dt->isPause; setIsPlay(!isPause); dt->SetPause(isPause); } //快进 void MYPlay::goOn() { double pos = ((double)(int)(((double)dt->pts / (double)dt->totalMs) * 1000)) / 1000 + 0.02; //依照需求调整快进的程度 dt->Seek(pos); } //快退 void MYPlay::goBack() { double pos = ((double)(int)(((double)dt->pts / (double)dt->totalMs) * 1000)) / 1000 - 0.02; //依照需求调整快退的程度 dt->Seek(pos); } //改变并储存背景 void MYPlay::changeBackground(QString url) { setBackGround(url); } //改变视频选择路径 void MYPlay::changeVideoPath(QString url) { setVideoPath(url); } //改变字幕选择路径 void MYPlay::changeSubTitlePath(QString url) { setSubTitlePath(url); } //改变音量 void MYPlay::setVolume(double newVolume) { dt->SetVolume(((double)(int)(newVolume*100))/100); } //停止 void MYPlay::setStop() { if(m_mOpenSuccess) { dt->Close(); dt.reset(new MYDemuxThread); dt->Start(); if(st->isOpen()) { st.reset(new MYSubTitle); setSubTitleText(""); } setOpenSuccess(false); } } //加载字幕 void MYPlay::loadSubTitle(QString url) { if(m_mOpenSuccess) { st.reset(new MYSubTitle); st->Open(url); } } // demoNum int MYPlay::demoNum() const { return m_mDemoNum; } void MYPlay::setDemoNum(int newValue) { if (m_mDemoNum != newValue) { m_mDemoNum = newValue; emit demoNumChanged(m_mDemoNum); } } int MYPlay::testNum() const { return m_mTestNum; } void MYPlay::setTestNum(int newValue) { if (m_mTestNum != newValue) { m_mTestNum = newValue; emit testNumChanged(m_mTestNum); } } double MYPlay::posNum() const { return m_mPosNum; } void MYPlay::setPosNum(double newValue) { if (m_mPosNum != newValue) { m_mPosNum = newValue; emit posNumChanged(m_mPosNum); } } bool MYPlay::isPlay() const { return m_mIsPlaying; } void MYPlay::setIsPlay(bool isPlaying) { if(m_mIsPlaying != isPlaying) { m_mIsPlaying = isPlaying; emit isPlayingChanged(m_mIsPlaying); } } bool MYPlay::openSuccess() const { return m_mOpenSuccess; } void MYPlay::setOpenSuccess(bool openSuccess) { if(m_mOpenSuccess != openSuccess) { m_mOpenSuccess = openSuccess; emit openSuccessChanged(m_mOpenSuccess); } } QObject* MYPlay::source() const { return m_mSource; } void MYPlay::setSource(QObject *source) { if(m_mSource != source) { m_mSource = source; emit sourceChanged(m_mSource); } } //背景图片路径 QString MYPlay::backGround() const { return m_strBackgroundPath; } void MYPlay::setBackGround(QString url) { QSettings *settingIni = new QSettings("setting.ini",QSettings::IniFormat); QString backGroundpath = settingIni->value("Path/Background").toString(); if(url == NULL) { if(backGroundpath == NULL) { delete settingIni; return; } else { m_strBackgroundPath = backGroundpath; QFileInfo fileInfo(backGroundpath); m_strBackGroundChoosePath = fileInfo.path(); qDebug()<<m_strBackGroundChoosePath<<endl; delete settingIni; emit backGroundChanged(m_strBackgroundPath); emit backGroundChooseChanged(m_strBackGroundChoosePath); return; } } if(m_strBackgroundPath != url) { settingIni->setValue("Path/Background",url); m_strBackgroundPath = url; QFileInfo fileInfo(url); //qDebug()<<fileInfo.suffix(); m_strBackGroundChoosePath = fileInfo.path(); emit backGroundChanged(m_strBackgroundPath); emit backGroundChooseChanged(m_strBackGroundChoosePath); } delete settingIni; } //选择背景路径 QString MYPlay::backGroundChoose() const { return m_strBackGroundChoosePath; } //选择视频路径 QString MYPlay::videoPath() const { return m_strVideoPath; } void MYPlay::setVideoPath(QString url) { QSettings *settingIni = new QSettings("setting.ini",QSettings::IniFormat); QString videoPath = settingIni->value("Path/VideoChoose").toString(); if(url == NULL) { if(videoPath == NULL) { delete settingIni; return; } else {