Vlc playing status

[abhay]

Hello..I am building a media player using vlc-qt.How can I know the current status(whether the video is playing or not) of player?I want to use that status and change icons of pause and play?Or how can I change the play/pause buttons when the video is running?Thanks..

[mrjj]

Hi
What player?
https://github.com/vlc-qt/examples/tree/master/simple-player
You supply more details and code for us to help. :)

[abhay]

@mrjj Hello..I am using that vlc-qt code only.This is my play/pause function

void SimplePlayer::on_pause_clicked(bool checked)
{
    QIcon icon;
    icon.addPixmap(QPixmap("://icons/play.png"),QIcon::Normal,QIcon::On);
    icon.addPixmap(QPixmap("://icons/pause.png"),QIcon::Normal,QIcon::Off);
    ui->pause->setIcon(icon);
    ui->pause->setCheckable(true);
}

Problem with this code is if I didn't select file and click play button it changes to pause and then if i select a file,play/pause buttons are toggled(I mean they are interchanged as I clicked it before selecting the video file).So,how this problem can be sorted?

[mrjj]

Hi
It seems you use On/off state, which as far as I remember if for checked/unchecked?

so this part
QIcon icon;
icon.addPixmap(QPixmap("://icons/play.png"),QIcon::Normal,QIcon::On);
icon.addPixmap(QPixmap("://icons/pause.png"),QIcon::Normal,QIcon::Off);
ui->pause->setIcon(icon);

should be moved to SimplePlayer constructor and set up once.

then
void SimplePlayer::on_pause_clicked(bool checked)
{
if ( ui->pause->isChecked() ... ( its on play currently)
}

[abhay]

@mrjj Could you explain the on_pause_clicked function briefly? Thanks

[mrjj]

@abhay said in Vlc playing status:

on_pause_clicked

Im guessing a bit. It seems you have used buttons
Checked feature and switch between 2 bitmaps if checked or not
checked?

So checking / unchecking the button should flip flop play/pause right ?

So if u check the button its play else is pause or reverse.

the on_pause_clicked is called when you click on the button.

So in my world, the on_pause_clicked should start or stop the
video and button should handle its icons on its own.

But with a single function its hard to tell how you made it work. :)

so I imagine something like
void SimplePlayer::on_pause_clicked(bool checked)
{
if ( ui->pause->isChecked()
STOPVIDEO()
else
STARTVIDEO()
}

Kind of.

[abhay]

@mrjj Thanks for sharing your suggestions :)
Here is my changed simpleplayer.cpp code.I did what you said to do.But the same problem repeats again.

#include <QFileDialog>
#include <QInputDialog>

#include <VLCQtCore/Common.h>
#include <VLCQtCore/Instance.h>
#include <VLCQtCore/Media.h>
#include <VLCQtCore/MediaPlayer.h>
#include <VLCQtCore/Enums.h>

//#include "EqualizerDialog.h"

#include "SimplePlayer.h"
#include "ui_SimplePlayer.h"

SimplePlayer::SimplePlayer(QWidget *parent)
    : QMainWindow(parent),
      ui(new Ui::SimplePlayer),
      _media(0)
//      _equalizerDialog(new EqualizerDialog(this))
{
    ui->setupUi(this);

    _instance = new VlcInstance(VlcCommon::args(), this);
    _player = new VlcMediaPlayer(_instance);
    _player->setVideoWidget(ui->video);
//    _equalizerDialog->setMediaPlayer(_player);

    ui->video->setMediaPlayer(_player);
    ui->volume->setMediaPlayer(_player);
    ui->volume->setVolume(50);
//    ui->seek->setMediaPlayer(_player);

    connect(ui->actionOpenLocal, &QAction::triggered, this, &SimplePlayer::openLocal);
//    connect(ui->actionOpenUrl, &QAction::triggered, this, &SimplePlayer::openUrl);


    connect(ui->openLocal, &QPushButton::clicked, this, &SimplePlayer::openLocal);
//    connect(ui->openUrl, &QPushButton::clicked, this, &SimplePlayer::openUrl);
    connect(ui->pause, &QPushButton::toggled, ui->actionPause, &QAction::toggle);
    connect(ui->stop, &QPushButton::clicked, _player, &VlcMediaPlayer::stop);
    QIcon icon;
    icon.addPixmap(QPixmap("://icons/play.png"),QIcon::Normal,QIcon::On);
    icon.addPixmap(QPixmap("://icons/pause.png"),QIcon::Normal,QIcon::Off);
    ui->pause->setIcon(icon);
    ui->pause->setCheckable(true);

}
SimplePlayer::~SimplePlayer()
{
    delete _player;
    delete _media;
    delete _instance;
    delete ui;
}

void SimplePlayer::openLocal()
{
    QString file =
            QFileDialog::getOpenFileName(this, tr("Open file"),
                                         QDir::homePath(),
                                         tr("Multimedia files(*)"));

    if (file.isEmpty())
        return;

    _media = new VlcMedia(file, true, _instance);

    _player->open(_media);
}

void VlcWidgetVolumeSlider::mousePressEvent(QMouseEvent *event)
{
   // ...
    QSlider::mousePressEvent(event);
   // ...
}
void VlcWidgetVolumeSlider::mouseReleaseEvent(QMouseEvent *event)
{
    // ...
    QSlider::mouseReleaseEvent(event);
   // ...
}

void SimplePlayer::on_checkBox_clicked(bool checked)
{
    ui->checkBox->setCheckable(true);
    QObject::connect(ui->checkBox, SIGNAL(clicked(bool)), ui->groupBox, SLOT(setVisible(bool)));

}

void SimplePlayer::on_fullscreen_clicked(bool checked)
{

    isFullScreen() ? showNormal() : showFullScreen();
    QIcon ico;
    ico.addPixmap(QPixmap("://icons/full_in.png"),QIcon::Normal,QIcon::On);
    ico.addPixmap(QPixmap("://icons/full_out.png"),QIcon::Normal,QIcon::Off);
    ui->fullscreen->setIcon(ico);
    ui->fullscreen->setCheckable(true);
}

void SimplePlayer::on_pause_clicked(bool checked)
{
    
    if(ui->pause->isChecked()){
       connect(ui->stop, &QPushButton::clicked, _player, &VlcMediaPlayer::stop);
    }
    else{
        connect(ui->actionPause, &QAction::toggled, _player, &VlcMediaPlayer::togglePause);
    }
}

What may be the problem?

[mrjj]

Hi
That would only try to connect some signals , but not really do anything.

I would expect something like

void SimplePlayer::on_pause_clicked(bool checked)
{
   
    if(ui->pause->isChecked()){
     _player ->stop();
    }
    else{
    _player ->togglePause();
    }
}

[abhay]

@mrjj that's not working and the whole video stops while clickng the button.I want it to just pause at that moment.There's a separate button for stop

[mrjj]

@abhay
ok then just call
player ->togglePause(); ?

[abhay]

@mrjj I found that there's play and pause functions in core library.I changed to

if(ui->pause->isChecked()){
        _player ->pause();
       }
       else{
       _player ->play();
       }

and it worked.Thanks :)

[mrjj]

@abhay
super :)