Play Audio File Using Qt Mobility

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Play Audio File Using Qt Mobility

Overview

This article shows how to play audio file using "QMediaPlayer":http://doc.qt.nokia.com/qtmobility/qmediaplayer.html from Qt Mobility 1.1.

Project Configuration

Modify the project configuration .pro file by including Qt Mobility support:

<br />CONFIG ''= mobility<br />MOBILITY''= multimedia<br />

Source Code

• .h

Include required headers:

<br />#include &lt;QMediaPlayer&amp;gt;<br />

Declare slot and private members:

<br />private slots:<br /> void statusChanged(QMediaPlayer::MediaStatus status);

private:

QMediaPlayer '''m_pPlayer;<br />

.cpp

Play a file located on the device:

<br />m_pPlayer = new QMediaPlayer(this);<br />connect(m_pPlayer, SIGNAL (positionChanged(qint64)), this, SLOT (statusChanged(qint64)));<br />//Select a file<br />m_pPlayer-&gt;setMedia(QUrl::fromLocalFile&amp;amp;#40;&quot;e:SoundsDigitalGirl_Rules.mp3&amp;quot;&amp;#41;);<br />//Set the volume<br />m_pPlayer-&gt;setVolume(50);<br />m_pPlayer-&gt;play();<br />

Implement the declared slot:

void MainWindow::statusChanged(QMediaPlayer::MediaStatus status)
{
if ( (QMediaPlayer::LoadedMedia == status) && m_pPlayer)
{
m_pPlayer->play();
}
}