QMediaService Class ReferenceThe QMediaService class provides a common base class for media service implementations. More... #include <QMediaService> This class is under development and is subject to change. Inherits QObject. Public Types
Public Functions
Signals
Protected Functions
Additional Inherited Members
Detailed DescriptionThe QMediaService class provides a common base class for media service implementations. Media services provide implementations of the functionality promised by media objects, and allow multiple providers to implement a QMediaObject. To provide the functionality of a QMediaObject media services implement QMediaControl interfaces. Services typically implement one core media control which provides the core feature of a media object, and some number of additional controls which provide either optional features of the media object, or features of a secondary media object or peripheral object. A pointer to media service's QMediaControl implementation can be obtained by passing the control's interface name to the control() function. QMediaPlayerControl *control = qobject_cast<QMediaPlayerControl *>( service->control("com.nokia.Qt.QMediaPlayerControl/1.0")); Media objects can use services loaded dynamically from plug-ins or implemented statically within an applications. Plug-in based services should also implement the QMediaServiceProviderPlugin interface. Static services should implement the QMediaServiceProvider interface. See also QMediaObject, QMediaControl, QMediaServiceProvider, and QMediaServiceProviderPlugin. Member Type Documentation
|
Constant | Value | Description |
---|---|---|
QMediaService::AudioDevice | 0 | An audio device for either input or output. |
Construct a media service with the given parent. This class is meant as a base class for Multimedia services so this constructor is protected.
Destroys a media service.
Returns the active endpoint for endpointType.
See also setActiveEndpoint().
This signal emitted when the active endpoint of type endpointType has been changed to endpoint.
Returns a pointer to the media control implementing interface.
If the service does not implement the control a null pointer is returned instead.
Returns a pointer to the media control of type T implemented by a media service.
If the service does not implment the control a null pointer is returned instead.
Returns the description of the endpoint for the endpointType.
Return true if endpointType is available.
Returns true if set of the active endpoint for endpointType to endpoint succeeds.
See also activeEndpoint().
Returns a list of endpoints available for the endpointType.
This signal is emitted when there is a change in the availability of devices.
Cette page est une traduction d'une page de la documentation de Qt, écrite par Nokia Corporation and/or its subsidiary(-ies). Les éventuels problèmes résultant d'une mauvaise traduction ne sont pas imputables à Nokia. | Qt qtmobility-1.0-tp | |
Copyright © 2012 Developpez LLC. Tous droits réservés Developpez LLC. Aucune reproduction, même partielle, ne peut être faite de ce site et de l'ensemble de son contenu : textes, documents et images sans l'autorisation expresse de Developpez LLC. Sinon, vous encourez selon la loi jusqu'à 3 ans de prison et jusqu'à 300 000 E de dommages et intérêts. Cette page est déposée à la SACD. | ||
Vous avez déniché une erreur ? Un bug ? Une redirection cassée ? Ou tout autre problème, quel qu'il soit ? Ou bien vous désirez participer à ce projet de traduction ? N'hésitez pas à nous contacter ou par MP ! |
Copyright © 2000-2012 - www.developpez.com