How to play sound with Qt

How can I play sound with 开发者_开发百科Qt? I tried this:

QSound::play("sounds/croack.wav");

QSound doesn't work on my ubuntu (seems that it requires NAS, although after I installed it it still doesn't work). Is there a simple one line Qt-only solution or do I need to throw in SDL or something else?

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You can use QMediaPlayer for both files format .mp3 and .wav

#include <QtMultimedia/QMediaPlayer>

QMediaPlayer *player = new QMediaPlayer;
player->setMedia(QUrl::fromLocalFile("/path"));
player->setVolume(50);
player->play();

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Try with phonon. It's far more powerful than QSound. Here's a minimal example to play a video file. If you omit the VideoWidget, it should just play audio.

#include <QApplication>
#include <QUrl>

#include <phonon/audiooutput.h>
#include <phonon/mediaobject.h>
#include <phonon/mediasource.h>
#include <phonon/videowidget.h>

using namespace Phonon;

int main( int argc, char** argv ) {
    QApplication app( argc, argv );
    app.setApplicationName( QLatin1String("testphonon") );
    const QUrl url = QUrl( QLatin1String("file:///somepath/somefile") );
    MediaSource src( url );
    MediaObject obj;
    obj.setCurrentSource( src );
    VideoWidget video;
    video.show();
    AudioOutput audio( VideoCategory );
    Phonon::createPath( &obj, &video );
    Phonon::createPath( &obj, &audio );
    obj.play();
    return app.exec();
}

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You have a few options:

• QSound (which is broken beyond repair - don't use it)
• Phonon (will do what you want, but I found it to be "too much", especially when you just want to play a few notification sounds)
• Other libraries like SDL.

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In QT5, Phonon has been removed from the official build. QSound works for the most part, but note that QSound does not support playing wave files with all sample rates( as I discovered the hard way). QT5 QSound does not play all wave files.

If you use QSound, you can just play a wave like you did; but make sure you are playing a file from a disk; not a QT resource. Since the resources are not supported yet. You can copy a wave file from a resource to a harddrive on the fly and then play it; which is what I am doing in my application.

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Ok I have some progress, I can play ogg files but not wav (dunno why).

#include <QtGui>
#include <phonon/phonon>

int main(int argc, char* argv[]) {
    QApplication app( argc, argv );
    app.setApplicationName("bla");
    Phonon::MediaObject *mediaObject = Phonon::createPlayer(Phonon::NoCategory, Phonon::MediaSource("sounds/4.wav"));
    mediaObject->play();
    return app.exec();
}

Compiled with g++ ``pkg-config QtGui phonon --cflags --libs``.

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I got that trouble too, i've solved it installing this package

qtmultimedia5-dev

and including in the ".pro" file

QT += multimedia