BackendCapabilities Namespace
(Phonon::BackendCapabilities)The BackendCapabilities namespace contains functions to describe the capabilities of the multimedia backend. More...
This namespace was introduced in Qt 4.4.
Classes
| class | Notifier |
Functions
| QList<EffectDescription> | availableAudioEffects () |
| QList<AudioOutputDevice> | availableAudioOutputDevices () |
| QStringList | availableMimeTypes () |
| bool | isMimeTypeAvailable ( const QString & mimeType ) |
| Notifier * | notifier () |
Detailed Description
The BackendCapabilities namespace contains functions to describe the capabilities of the multimedia backend.
Classes
class Notifier
Function Documentation
QList<EffectDescription> BackendCapabilities::availableAudioEffects ()
Returns descriptions for the audio effects the backend supports.
Returns A list of AudioEffectDescription objects that give a name and description for every supported audio effect.
QList<AudioOutputDevice> BackendCapabilities::availableAudioOutputDevices ()
Returns the audio output devices the backend supports.
Returns A list of AudioOutputDevice objects that give a name and description for every supported audio output device.
QStringList BackendCapabilities::availableMimeTypes ()
Returns a list of mime types that the Backend can decode.
See also isMimeTypeAvailable().
bool BackendCapabilities::isMimeTypeAvailable ( const QString & mimeType )
Often all you want to know is whether one given MIME type can be decoded by the backend. Use this method in favor of availableMimeTypes() as it can give you a negative answer without having a backend loaded.
Returns true if the given mimeType is supported by the backend; otherwise, returns false.
See also availableMimeTypes().
Notifier * BackendCapabilities::notifier ()
Use this function to get a QObject pointer to connect to the capabilitiesChanged signal.
Returns a pointer to a QObject.
The capabilitiesChanged signal is emitted if the capabilities have changed. This can happen if the user has requested a backend change.
To connect to this signal do the following:
QObject::connect(BackendCapabilities::notifier(), SIGNAL(capabilitiesChanged()), ...
See also Notifier::capabilitiesChanged().
No notes