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<p>The signal is emited when the active streams list is changed.</p>
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<h3 class="fn"><a name="isActive"></a>bool QMediaStreamsControl::isActive ( int <i>stream</i> )<tt> [pure virtual]</tt></h3>
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<p>Returns true if the media <i>stream</i> is active.</p>
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<h3 class="fn"><a name="metaData"></a>QVariant QMediaStreamsControl::metaData ( int <i>stream</i>, <a href="qtmultimediakit.html#MetaData-enum">QtMultimediaKit::MetaData</a> <i>key</i> )<tt> [pure virtual]</tt></h3>
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<h3 class="fn"><a name="metaData"></a><a href="http://qt.nokia.com/doc/4.6/qvariant.html">QVariant</a> QMediaStreamsControl::metaData ( int <i>stream</i>, <a href="qtmultimediakit.html#MetaData-enum">QtMultimediaKit::MetaData</a> <i>key</i> )<tt> [pure virtual]</tt></h3>
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<p>Returns the meta-data value of <i>key</i> for a given <i>stream</i>.</p>
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<p>Useful metadata keya are <a href="qtmultimediakit.html#MetaData-enum">QtMultimediaKit::Title</a>, <a href="qtmultimediakit.html#MetaData-enum">QtMultimediaKit::Description</a> and <a href="qtmultimediakit.html#MetaData-enum">QtMultimediaKit::Language</a>.</p>
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<h3 class="fn"><a name="setActive"></a>void QMediaStreamsControl::setActive ( int <i>stream</i>, bool <i>state</i> )<tt> [pure virtual]</tt></h3>