Phonon Module

Phonon::AudioDataOutput	Access to audio data
Phonon::AudioOutput	Used to send data to audio output devices
Phonon::Effect	Used to transform audio streams
Phonon::EffectParameter	Describes one parameter of an effect
Phonon::EffectWidget	Widget to control the parameters of an Effect
Phonon::MediaController	Controls optional features of a media file/device
Phonon::MediaNode	The base class for all nodes in a media graph
Phonon::MediaObject	Interface for media playback
Phonon::MediaSource	Multimedia data for media objects
Phonon::BackendCapabilities::Notifier
Phonon::ObjectDescription	Information about Phonon objects
Phonon::Path	Describes connections between media nodes
Phonon::SeekSlider	Slider for seeking to positions in media streams
Phonon::VideoPlayer	Used to perform playback of video
Phonon::VideoWidget	Widget that is used to display video
Phonon::VideoWidgetInterface44
Phonon::VolumeSlider	Slider that is used to control the volume of an audio output device

Phonon is a cross-platform multimedia framework that enables the use of audio and video content in Qt applications. The Phonon Overview document provides an introduction to the architecture and features included in Phonon. The Phonon namespace contains a list of all classes, functions and namespaces provided by the module.

Applications that use Phonon's classes need to be configured to be built against the Phonon module. The following declaration in a qmake project file ensures that an application is compiled and linked appropriately:

 QT += phonon

Qt Backends

Qt Backends are currently developed for Phonon version 4.1. The Phonon project has moved on and introduced new features that the Qt Backends do not implement. We have chosen not to document the part of Phonon that we do not support. Any class or function not appearing in our documentation can be considered unsupported.

License Information

Qt Commercial Edition licensees that wish to distribute applications that use the Phonon module need to be aware of their obligations under the GNU Lesser General Public License (LGPL).

Developers using the Open Source Edition can choose to redistribute the module under the appropriate version of the GNU LGPL; version 2.1 for applications and libraries licensed under the GNU GPL version 2, or version 3 for applications and libraries licensed under the GNU GPL version 3.