Difference between revisions of "Phonon"

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#include <phonon/audiooutput.h>
#include <phonon/audiooutput.h>
#include <QFileDialog>
#include <QtGui/QApplication>
#include <QtGui/QApplication>
#include <QtGui/QMainWindow>
#include <QtGui/QMainWindow>

Revision as of 08:27, 26 September 2011

Tutorial Factbox
Time to replay 20 min
Example Distro SUSE Linux 11.4
Type Howto
Happy readers 2
Unhappy readers 0


The following is based on the documentation available here.

By getting involved with Phonon, you can choose between three different main tasks.

  • Using the Phonon API, which allows you to develop your own multimedia application. Start here.
  • Hacking the Phonon library.
  • Writing Phonon backend, this consists in writing interfaces that allows Phonon to use different sound/video engine. This usually requires good skills and knowledge of the engine you interface with.

Using the phonon API

The following example is taken from englishbreakfastnetwork. It lets you select a music file and plays it. To change the sound device that is used by default, use the command systemsettings.


You need a file CMakeLists.txt to compile the software later:

project (tutorial2)
find_package(KDE4 REQUIRED)
include (KDE4Defaults)
set(tutorial1_SRCS main.cpp)
kde4_add_executable(tutorial2 ${tutorial1_SRCS})
target_link_libraries(tutorial2 ${KDE4_KDEUI_LIBS} phonon)


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

#include <QFileDialog>
#include <QtGui/QApplication>
#include <QtGui/QMainWindow>
#include <QUrl>

class MainWindow : public QMainWindow

    Phonon::MediaObject* media = new Phonon::MediaObject(this);
    Phonon::createPath(media, new Phonon::AudioOutput(Phonon::MusicCategory, this));
    media->setCurrentSource(QFileDialog::getOpenFileName(0,QString("Select a file to play"),QString()));

int main(int argc, char **argv)
    QApplication app(argc, argv);
    QApplication::setApplicationName("Phonon Tutorial 2");
    MainWindow mw;
    return app.exec();

#include "main.moc"

Compile and run it

cmake . && make && ./tutorial2

Getting more help

To talk among phonon experts, point your irc client to the server irc.freenode.org, channel #phonon.

See also

Content is available under Creative Commons License SA 4.0 unless otherwise noted.