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#include "videoplayer.h"
#include "ui_videoplayer.h"

VideoPlayer::VideoPlayer(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::VideoPlayer)
{
    ui->setupUi(this);

    _player = new QMediaPlayer(this);
    _videoWidget = new QVideoWidget();
    _slower = new QPushButton("slow down");
    _faster = new QPushButton("speed up");

    connect(_slower, SIGNAL(clicked()), this, SLOT(slowDown()));
    connect(_faster, SIGNAL(clicked()), this, SLOT(speedUp()));

    QString fileName = QFileDialog::getOpenFileName(this,"Open",QDir::homePath());

    _player->setMedia(QUrl::fromLocalFile(fileName));

    qDebug()<<fileName;

    //create layout
    _player->setVideoOutput(_videoWidget);
    QBoxLayout* layout = new QVBoxLayout();
    layout->addWidget(_videoWidget);
    layout->addWidget(_slower);
    layout->addWidget(_faster);

    ui->centralWidget->setLayout(layout);

    _player->play();

    qDebug()<<_player->errorString();
    qDebug()<<_player->mediaStatus();
    qDebug()<<_player->duration();
    qDebug()<<_player->playbackRate();
}

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

void VideoPlayer::slowDown(void)
{
    _speed = _speed-0.10;
    _player->setPlaybackRate(_speed);
    qDebug()<<_player->duration();
    qDebug()<<_player->playbackRate();
}

void VideoPlayer::speedUp(void)
{
    _speed = _speed+0.10;
    _player->setPlaybackRate(_speed);
    qDebug()<<_player->duration();
    qDebug()<<_player->playbackRate();
}