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QMediaStreamsControl Class Reference

The QMediaStreamsControl class provides a media stream selection control. More...

    #include <QMediaStreamsControl>

This class is under development and is subject to change.

Inherits QMediaControl.


Public Types

enum StreamType { AudioStream, VideoStream, SubPictureStream, UnknownStream, DataStream }

Public Functions

virtual ~QMediaStreamsControl ()
virtual bool isActive ( int stream ) = 0
virtual QVariant metaData ( int stream, QtMultimediaKit::MetaData key ) = 0
virtual void setActive ( int stream, bool state ) = 0
virtual int streamCount () = 0
virtual StreamType streamType ( int stream ) = 0

Signals

void activeStreamsChanged ()
void streamsChanged ()

Protected Functions

QMediaStreamsControl ( QObject * parent = 0 )

Macros

QMediaStreamsControl_iid

Additional Inherited Members


Detailed Description

The 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 com.nokia.Qt.MediaStreamsControl as defined in QMediaStreamsControl_iid.

See also QMediaService::requestControl().


Member Type Documentation

enum QMediaStreamsControl::StreamType

Media stream type.

ConstantValueDescription
QMediaStreamsControl::AudioStream2Audio stream.
QMediaStreamsControl::VideoStream1Video stream.
QMediaStreamsControl::SubPictureStream3Subpicture or teletext stream.
QMediaStreamsControl::UnknownStream0The stream type is unknown.
QMediaStreamsControl::DataStream4 


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 emited 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, QtMultimediaKit::MetaData key )   [pure virtual]

Returns the meta-data value of key for a given stream.

Useful metadata keya are QtMultimediaKit::Title, QtMultimediaKit::Description and QtMultimediaKit::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 emited when the available streams list is changed.


Macro Documentation

QMediaStreamsControl_iid

com.nokia.Qt.MediaStreamsControl

Defines the interface name of the QMediaStreamsControl class.


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Qt Mobility Project 1.0.2