QtAv player 视频播放器

/****************************************************************************** Simple Player: this file is part of QtAV examples Copyright (C) 2012-2014 Wang Bin <wbsecg1@gmail.com> * This file is part of QtAV This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. ******************************************************************************/ #include "playerwindow.h" #include <QPushButton> #include <QSlider> #include <QLayout> #include <QLabel> #include <QMessageBox> #include <QFileDialog> #include <QDebug> #include <QtAV/VideoRenderer.h> using namespace QtAV; PlayerWindow::PlayerWindow(QWidget *parent) : QWidget(parent) { setWindowTitle("QtAV simple player example"); InitQtAV(); CreateUI(); } void PlayerWindow::openMedia() { QString file = QFileDialog::getOpenFileName(0, "Open a video","","*.mp4 *.rmvb *.mkv *.avi"); if (file.isEmpty()) return; m_player->play(file); } void PlayerWindow::seek(int pos) { if (!m_player->isPlaying()) return; m_player->seek(pos*1000LL); // to msecs } void PlayerWindow::playPause() { if (!m_player->isPlaying()) { m_player->play(); return; } m_player->pause(!m_player->isPaused()); } void PlayerWindow::stop() { m_player->stop(); m_slider->setValue(0); m_TotalDurationLab->setText("00:00"); m_CurrentDurationLab->setText("00:00"); } void PlayerWindow::imageCaptured(QImage image) { QString savepath = QFileDialog::getSaveFileName(this,"Save Picture","captured","(*.png);; (*.jpg);; (*.jpge);; (*.bmp)"); if(!savepath.isEmpty()) image.save(savepath); } void PlayerWindow::InitQtAV() { //AV初始化 m_player = new AVPlayer(this); m_vo = new VideoOutput(this); if (!m_vo->widget()) { QMessageBox::warning(0, "QtAV error", "Can not create video renderer"); return; } m_player->setRenderer(m_vo); } void PlayerWindow::CreateUI() { //控制按钮 m_openBtn = new QPushButton("Open"); m_playBtn = new QPushButton("Play/Pause"); m_stopBtn = new QPushButton("Stop"); m_captureBtn = new QPushButton("Capture"); QHBoxLayout* hlayout = new QHBoxLayout; hlayout->addWidget(m_openBtn); hlayout->addWidget(m_playBtn); hlayout->addWidget(m_stopBtn); hlayout->addWidget(m_captureBtn); //时间进度条 m_slider = new QSlider(); m_slider->setOrientation(Qt::Horizontal); m_TotalDurationLab = new QLabel("00:00"); m_CurrentDurationLab = new QLabel("00:00"); m_TotalDurationLab->setFixedHeight(25); QHBoxLayout* hlayout1 = new QHBoxLayout; hlayout1->addWidget(m_CurrentDurationLab); hlayout1->addSpacing(3); hlayout1->addWidget(m_slider); hlayout1->addSpacing(3); hlayout1->addWidget(m_TotalDurationLab); QVBoxLayout* mainlayout = new QVBoxLayout(this); mainlayout->addWidget(m_vo->widget()); mainlayout->addLayout(hlayout1); mainlayout->addLayout(hlayout); connect(m_slider, SIGNAL(sliderMoved(int)), SLOT(seek(int))); connect(m_player, SIGNAL(positionChanged(qint64)), SLOT(updateSlider())); connect(m_player, SIGNAL(started()), SLOT(updateSlider())); connect(m_player, SIGNAL(loaded()), SLOT(loadFinish())); connect(m_openBtn, SIGNAL(clicked()), SLOT(openMedia())); connect(m_playBtn, SIGNAL(clicked()), SLOT(playPause())); connect(m_stopBtn, SIGNAL(clicked()), SLOT(stop())); connect(m_captureBtn, SIGNAL(clicked()),m_player->videoCapture(), SLOT(request())); connect(m_player->videoCapture(), SIGNAL(imageCaptured(QImage)), SLOT(imageCaptured(QImage))); } QString PlayerWindow::SwitchTimes(const int &total) { QString hhs,mms,sss; int hh = total/3600; int mm = (total-hh*3600)/60; int ss = (total-hh*3600)%60; if(hh < 10) hhs = QString("0%1").arg(hh); else hhs = QString("%1").arg(hh); if(mm < 10) mms = QString("0%1").arg(mm); else mms = QString("%1").arg(mm); if(ss < 10) sss = QString("0%1").arg(ss); else sss = QString("%1").arg(ss); if(hh == 0) return QString("%1:%2").arg(mms).arg(sss); else return QString("%1:%2:%3").arg(hhs).arg(mms).arg(sss); } void PlayerWindow::updateSlider() { m_slider->setRange(0, int(m_player->duration()/1000LL)); m_slider->setValue(int(m_player->position()/1000LL)); m_CurrentDurationLab->setText(SwitchTimes(m_player->position()/1000LL)); } void PlayerWindow::loadFinish() { m_TotalDurationLab->setText(SwitchTimes(m_player->duration()/1000LL)); }