Qt 视频播放源码

QT 视频播放，支持多种视频播放，可以快进，快退，暂停，停止，调节声音。如初次运行请执行，文件夹下的mplayer的mplayer.exe即可。

#include 
#include “implayer.h“
#include “ui_implayer.h“



IMplayer::IMplayer（QWidget *parent） :
    QMainWindow（parent）
    ui（new Ui::IMplayer）
{
    isMute = 0;
    isPlay = 1;
    isLength = 1;
    timePos = 0;
    timeLength = 0;

    ui->setupUi（this）;
    ui->scheduleSlider->setRange（0999）;
    ui->voiceSlider->setRange（0 99）;

    mplayerProcess = new QProcess（this）;
    mplayerProcess->setProcessChannelMode（QProcess::MergedChannels）;
    //mplayerProgram = tr（“D:/workstation/IMplayer/mplayer/mplayer.exe“）;
    mplayerProgram = tr（“../mplayer/mplayer.exe“）;
    timeClock = new QTimer（this）;

    connect（mplayerProcess SIGNAL（readyReadStandardOutput（）） this SLOT（back_Message_slot（）））;
    connect（timeClock SIGNAL（timeout（）） this SLOT（back_posMessage_slot（）））;

}

IMplayer::~IMplayer（）
{
    delete ui;
}

void IMplayer::setUI（）
{

}

void IMplayer::play（QString fileName）
{
    mplayerProcess->close（）;

    ui->posTimeLineEdit->setText（“00:00:00“）;
    ui->lengthTimeLineEdit->setText（“00:00:00“）;
    ui->scheduleSlider->setValue（0）;
    ui->voiceSlider->setValue（99）;
    ui->playPushButton->setEnabled（1）;
    ui->pausePushButton->setEnabled（1）;
    ui->stopPushButton->setEnabled（1）;
    ui->stepPushButton->setEnabled（1）;
    ui->backPushButton->setEnabled（1）;
    ui->scheduleSlider->setEnabled（1）;
    ui->voiceSlider->setEnabled（1）;
    ui->quietPushButton->setEnabled（1）;

    QStringList args;
    args << tr（“-slave“）;
    args << “-quiet“;
    args << “-zoom“;
    args << tr（“-wid“） << QString::number（（unsigned int）（ui->widget->winId（）））;
    args << “-vo“ << “directx:noaccel“;
    args << fileName;

    timePos = 0;
    //ui->posTimeLineEdit->setText（“00:00:00“）;
    timeLength = 1;
    isLength = 1;

    mplayerProcess->start（mplayerProgram args）;

    mplayerProcess->write（“get_time_length\n“）;
}

void IMplayer::on_playPushButton_clicked（）
{

    if（isPlay == 0）
    {
        mplayerProcess->write（“pause\n“）;
        isPlay = 1;
        timeClock->start（）;
    }
}

void IMplayer::on_pausePushButton_clicked（）
{
    if（isPlay == 1）
    {
        mplayerProcess->write（“pause\n“）;
        //timeClock->isActive（）= false;
        isPlay = 0;
        timeClock->stop（）;

    }
}

void IMplayer::on_stopPushButton_clicked（）
{
    timeClock->stop（）;
    mplayerProcess->write（“pausing_keep stop\n“）;

    ui->posTimeLineEdit->setText（“00:00:00“）;
    ui->lengthTimeLineEdit->setText（“00:00:00“）;
    ui->scheduleSlider->setValue（0）;
    ui->voiceSlider->setValue（99）;
    ui->playPushButton->setDisabled（1）;
    ui->pausePushButton->setDisabled（1）;
    ui->stopPushButton->setDisabled（1）;
    ui->stepPushButton->setDisabled（1）;
    ui->backPushButton->setDisabled（1）;
    ui->scheduleSlider->setDisabled（1）;
    ui->voiceSlider->setDisabled（1）;
    ui->quietPushButton->setIcon（QIcon（tr（“:/images/images/voice.png“）））;
    ui-

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件       9972  2009-11-02 14:45  IMplayer\implayer\images\backward.png

     文件      10781  2009-11-02 14:45  IMplayer\implayer\images\mute.png

     文件       2073  2006-10-20 15:26  IMplayer\implayer\images\openfile.png

     文件       9057  2009-11-02 14:45  IMplayer\implayer\images\pause.png

     文件       9748  2009-11-02 14:45  IMplayer\implayer\images\play.png

     文件      17669  2010-08-17 11:04  IMplayer\implayer\images\quiet.png

     文件      10015  2009-11-02 14:45  IMplayer\implayer\images\step.png

     文件       9351  2009-11-02 14:45  IMplayer\implayer\images\stop.png

     文件       5896  2009-11-02 14:46  IMplayer\implayer\images\vocal.png

     文件      18217  2010-08-17 10:59  IMplayer\implayer\images\voice.png

     文件        445  2010-08-17 11:06  IMplayer\implayer\images.qrc

     文件       7209  2010-09-03 11:28  IMplayer\implayer\implayer.cpp

     文件       1401  2010-09-01 08:45  IMplayer\implayer\implayer.h

     文件        362  2010-08-19 15:55  IMplayer\implayer\implayer.pro

     文件      37243  2013-04-03 13:39  IMplayer\implayer\implayer.pro.user

     文件      13571  2010-09-03 11:40  IMplayer\implayer\implayer.pro.user.2.1pre1

     文件      16997  2010-08-30 09:33  IMplayer\implayer\implayer.ui

     文件        191  2010-09-01 13:09  IMplayer\implayer\main.cpp

     文件    1149147  2010-09-03 11:28  IMplayer\implayer-build-desktop\debug\implayer.exe

     文件     489974  2010-09-03 11:28  IMplayer\implayer-build-desktop\debug\implayer.o

     文件     114801  2010-09-03 10:50  IMplayer\implayer-build-desktop\debug\main.o

     文件       4030  2010-09-03 10:50  IMplayer\implayer-build-desktop\debug\moc_implayer.cpp

     文件     129484  2010-09-03 10:50  IMplayer\implayer-build-desktop\debug\moc_implayer.o

     文件        500  2010-08-16 11:00  IMplayer\implayer-build-desktop\debug\play.o

     文件     535942  2010-08-17 11:21  IMplayer\implayer-build-desktop\debug\qrc_images.cpp

     文件     110762  2010-08-17 11:21  IMplayer\implayer-build-desktop\debug\qrc_images.o

     文件       6245  2010-08-19 16:04  IMplayer\implayer-build-desktop\Makefile

     文件       6748  2010-08-19 16:04  IMplayer\implayer-build-desktop\Makefile.Debug

     文件       6843  2010-08-19 16:04  IMplayer\implayer-build-desktop\Makefile.Release

     文件      16528  2010-08-30 09:33  IMplayer\implayer-build-desktop\ui_implayer.h

............此处省略68个文件信息