Phonon Namespace

Type Documentation

typedef Phonon::AudioOutputDevice

This typedef of ObjectDescription describes an audio output device, such as soundcards (with different drivers), sound servers, or other virtual outputs like playback on a different computer on the network.

A list of available devices is given by the backend with Backendcapabilities::availableAudioOutputDevices()

     QList<Phonon::AudioOutputDevice> audioOutputDevices =
             Phonon::BackendCapabilities::availableAudioOutputDevices();

typedef Phonon::AudioOutputDeviceModel

provides an item view model containing available audio output devices.

enum Phonon::Category

Sets the category your program should be listed in in the mixer.

Constant	Value	Description
Phonon::NoCategory	-1	Will make use of the default device.
Phonon::NotificationCategory	0	If the sounds produced are notifications (ping, beep and such) you should use this category.
Phonon::MusicCategory	1	If your application is a music player (like a jukebox or media player playing an audio file).
Phonon::VideoCategory	2	If the sound is the audio channel of a video.
Phonon::CommunicationCategory	3	If your applications produces sounds from communication with somebody else (VoIP, voice chat).
Phonon::GameCategory	4	Sound produced by a computer game should go into this category.
Phonon::AccessibilityCategory	5	Sounds produced for accessibility (e.g., Text-To-Speech) Holds the largest value of categories.

A Jukebox will set this to Music, a VoIP program to Communication, a DVD player to video, and so on.

Note: These categories can also become useful for an application that controls the volumes automatically, like turning down the music when a call comes in, or turning down the notifications when the media player knows it's playing classical music.

enum Phonon::DiscType

Enum to identify the media discs supported by MediaObject.

Constant	Value	Description
Phonon::NoDisc	-1	No disc was selected. This is only useful as a return value from MediaSource::diskType().
Phonon::Cd	0	Identifies Audio CDs.
Phonon::Dvd	1	Identifies DVDs (not arbitrary data DVDs, only movie DVDs).
Phonon::Vcd	2	Identifies Video CDs.

See also MediaSource and MediaObject.

typedef Phonon::EffectDescription

EffectDescription gives a description of an audio effect. It is a typedef of the ObjectDescription class. Please see its class description for details.

EffectDescription is used to create audio Effects, which can be inserted into a media graph, altering an audio stream.

See also Phonon::ObjectDescription, Capabilities Example, and Media Player.

typedef Phonon::EffectDescriptionModel

provides a item view model containing available audio effects.

enum Phonon::ErrorType

This enum describes the severity when an error has occurred during playback.

After a media object has entered the ErrorState, one can query the type of error from MediaObject::errorType(). Note that you should query the error when receiving the MediaObject::stateChanged() signal, because the error type will be lost if the media object leaves the error state.

Constant	Value	Description
Phonon::NoError	0	No error. MediaObject::errorType() returns this if MediaObject::state() != Phonon::ErrorState.
Phonon::NormalError	1	An error has occurred with the playback of the current source. It might be possible to continue playback, for instance, if only the audio stream in a video cannot be played back. The media object will then leave the error state again.
Phonon::FatalError	2	. Something important does not work. Your program cannot continue the playback of the current source, but it might be possible to try another.

See also MediaObject::errorType().

enum Phonon::MetaData

Provided as keys for Phonon::MediaObject::metaData(). The enum values matches strings defined in the Ogg Vorbis specification

Constant	Value
Phonon::ArtistMetaData	0
Phonon::AlbumMetaData	1
Phonon::TitleMetaData	2
Phonon::DateMetaData	3
Phonon::GenreMetaData	4
Phonon::TracknumberMetaData	5
Phonon::DescriptionMetaData	6
Phonon::MusicBrainzDiscIdMetaData	7

enum Phonon::ObjectDescriptionType

This enum defines the type of information that is contained in a ObjectDescription object.

Constant	Value	Description
Phonon::AudioOutputDeviceType	0	An audio output device (AudioOutputDevice). This can be soundcards (with different drivers), sound servers, or other virtual outputs like playback on a different computer on the network.
Phonon::EffectType	1	An audio effect (EffectDescription).

enum Phonon::State

The state enum describes the different states a media object can take. Several functions of MediaObject are asynchronous, so even if a you have requested a state change through a function call, e.g., through play(), you cannot be sure that the change has taken place before you receive the stateChanged() signal.

A media object can at any time change into any state, regardless of the state it previously had.

Constant	Value	Description
Phonon::LoadingState	0	After construction it might take a while before the media object is ready to play(). This state is commonly used by backends to initialize the media graph and loading the source. When the object leaves the loading state, it will enter the StoppedState unless an error occurred or another state is requested through a function call, e.g., MediaObject::play().
Phonon::StoppedState	1	In the stopped state, the media object is ready to play its current media source. The current position in the media stream is then 0.
Phonon::PlayingState	2	The media object is playing back its media source.
Phonon::BufferingState	3	The Player is waiting for data to be able to start or continue playing. This state is commonly used to wait for media data over a network connection.
Phonon::PausedState	4	The media player has currently paused its playback, i.e., it stops playing but keeps the current playback position in the stream.
Phonon::ErrorState	5	When a media object enters the error state a problem with the playback has occurred. The possible errors are grouped into two categories by Phonon::ErrorType, and the type can be queried through errorType(). A FatalError implies that the playback cannot continue, but one can still try with a new media source. With a NormalError it might be possible to continue playback, and a media object may therefore change state from the ErrorState.

This enum was introduced or modified in Qt 4.4.

See also MediaObject.

typedef Phonon::VideoWidgetInterfaceLatest

This typedef was introduced in Qt 4.7.