Play Audio Files using Qt Mobility

ID		Creation date	31st Mar 2010
Platform	S60 5th Edition	Tested on devices	Nokia N97 Mini
Category	Qt	Subcategory	Qt Mobility API

Keywords (APIs, classes, methods, functions): QMediaPlayer, QMediaPlaylist

Tip: Read this article before moving forward: Setting up environment for Qt Mobility API

Overview

This article shows how to Play Audio Files(supported) using Qt Mobility.

Project configuration file (.Pro file)

• Add the Qt Mobility project configuration option in the .Pro file as shown below

CONFIG += mobility
MOBILITY += multimedia

Header File

#include <qmediaplayer.h>
#include <qmediaplaylist.h>
 
private slots:
    void statusChanged(QMediaPlayer::MediaStatus status);   
private:
    QMediaPlayer *player;
    QMediaPlaylist *playlist;

Source File

#include <qurl.h>
 
 
player = new QMediaPlayer(this);
player->setVolume(50); // set Volume
playlist = new QMediaPlaylist(this);
playlist->setMediaObject(player);
 
connect(player, SIGNAL(mediaStatusChanged(QMediaPlayer::MediaStatus)),
        this, SLOT(statusChanged(QMediaPlayer::MediaStatus)));
 
playlist->addMedia(QUrl::fromLocalFile("c:\\data\sample.mp3"));  // you can add as many media files as you want
 
player->play();

void QtPlayerAudio::statusChanged(QMediaPlayer::MediaStatus status) {
    switch (status) {
    case QMediaPlayer::LoadedMedia:
        player->play();
        break;
    default:
    	break;
    }
}

Classes

• QMediaPlayer
• QMediaPlaylist

Reference links

• Qt - cross-platform application and UI framework
• Qt Mobility API
• New Qt APIs Beta - Mobility Project
• SDK help

--skumar_rao 16:50, 31 March 2010 (UTC)