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QMediaStreamsControl ClassThe QMediaStreamsControl class provides a media stream selection control. More... #include <QMediaStreamsControl>Inherits: QMediaControl. Public Types
Public Functions
Signals
Protected Functions
Macros
Additional Inherited Members
Detailed DescriptionThe QMediaStreamsControl class provides a media stream selection control. The QMediaStreamsControl class provides descriptions of the available media streams and allows individual streams to be activated and deactivated. The interface name of QMediaStreamsControl is org.qt-project.qt.mediastreamscontrol/5.0 as defined in QMediaStreamsControl_iid. See also QMediaService::requestControl(). Member Type Documentation
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| Constant | Value | Description |
|---|---|---|
| QMediaStreamsControl::AudioStream | 2 | Audio stream. |
| QMediaStreamsControl::VideoStream | 1 | Video stream. |
| QMediaStreamsControl::SubPictureStream | 3 | Subpicture or teletext stream. |
| QMediaStreamsControl::UnknownStream | 0 | The stream type is unknown. |
| QMediaStreamsControl::DataStream | 4 |
Member Function Documentation
QMediaStreamsControl::QMediaStreamsControl(QObject * parent = 0) [protected]
Constructs a new media streams control with the given parent.
QMediaStreamsControl::~QMediaStreamsControl() [virtual]
Destroys a media streams control.
void QMediaStreamsControl::activeStreamsChanged() [signal]
The signal is emitted when the active streams list is changed.
bool QMediaStreamsControl::isActive(int stream) [pure virtual]
Returns true if the media stream is active.
QVariant QMediaStreamsControl::metaData(int stream, const QString & key) [pure virtual]
Returns the meta-data value of key for a given stream.
Useful metadata keys are QtMultimedia::MetaData::Title, QtMultimedia::MetaData::Description and QtMultimedia::MetaData::Language.
void QMediaStreamsControl::setActive(int stream, bool state) [pure virtual]
Sets the active state of a media stream.
Setting the active state of a media stream to true will activate it. If any other stream of the same type was previously active it will be deactivated. Setting the active state fo a media stream to false will deactivate it.
See also isActive().
int QMediaStreamsControl::streamCount() [pure virtual]
Returns the number of media streams.
StreamType QMediaStreamsControl::streamType(int stream) [pure virtual]
Return the type of a media stream.
void QMediaStreamsControl::streamsChanged() [signal]
The signal is emitted when the available streams list is changed.
Macro Documentation
QMediaStreamsControl_iid
org.qt-project.qt.mediastreamscontrol/5.0
Defines the interface name of the QMediaStreamsControl class.