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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en_US" lang="en_US">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<!-- phonon-api.qdoc -->
  <title>Qt 4.8: MediaController Class Reference</title>
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<body>
<div class="header" id="qtdocheader">
  <div class="content"> 
    <a href="index.html" class="qtref"><span>Qt Reference Documentation</span></a>
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    <ul>
      <li class="first"><a href="index.html">Home</a></li>
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<li><a href="modules.html">Modules</a></li>
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<li>MediaController</li>
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<div class="content mainContent">
<div class="toc">
<h3><a name="toc">Contents</a></h3>
<ul>
<li class="level1"><a href="#public-types">Public Types</a></li>
<li class="level1"><a href="#public-functions">Public Functions</a></li>
<li class="level1"><a href="#public-slots">Public Slots</a></li>
<li class="level1"><a href="#signals">Signals</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
</ul>
</div>
<h1 class="title">MediaController Class Reference</h1>
<span class="small-subtitle">(Phonon::MediaController)<br/></span>
<!-- $$$MediaController-brief -->
<p>The MediaController class controls optional features of a media file/device. <a href="#details">More...</a></p>
<!-- @@@MediaController -->
<pre class="cpp"> <span class="preprocessor">#include &lt;Phonon/MediaController&gt;</span></pre><p><b>Inherits: </b><a href="qobject.html">QObject</a>.</p>
<p>This class was introduced in Qt 4.4.</p>
<ul>
<li><a href="phonon-mediacontroller-members.html">List of all members, including inherited members</a></li>
</ul>
<a name="public-types"></a>
<h2>Public Types</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> enum </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a></b> { Angles, Chapters, Titles }</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> flags </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#Feature-enum">Features</a></b></td></tr>
</table>
<a name="public-functions"></a>
<h2>Public Functions</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#MediaController">MediaController</a></b> ( MediaObject * <i>parent</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#dtor.MediaController">~MediaController</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> bool </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#autoplayTitles">autoplayTitles</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#availableAngles">availableAngles</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#availableChapters">availableChapters</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#availableTitles">availableTitles</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#currentAngle">currentAngle</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#currentChapter">currentChapter</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> int </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#currentTitle">currentTitle</a></b> () const</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> Features </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#supportedFeatures">supportedFeatures</a></b> () const</td></tr>
</table>
<ul>
<li class="fn">29 public functions inherited from <a href="qobject.html#public-functions">QObject</a></li>
</ul>
<a name="public-slots"></a>
<h2>Public Slots</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#nextTitle">nextTitle</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#previousTitle">previousTitle</a></b> ()</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#setAutoplayTitles">setAutoplayTitles</a></b> ( bool <i>enable</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#setCurrentAngle">setCurrentAngle</a></b> ( int <i>angleNumber</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#setCurrentChapter">setCurrentChapter</a></b> ( int <i>chapterNumber</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#setCurrentTitle">setCurrentTitle</a></b> ( int <i>titleNumber</i> )</td></tr>
</table>
<ul>
<li class="fn">1 public slot inherited from <a href="qobject.html#public-slots">QObject</a></li>
</ul>
<a name="signals"></a>
<h2>Signals</h2>
<table class="alignedsummary">
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#angleChanged">angleChanged</a></b> ( int <i>angleNumber</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#availableAnglesChanged">availableAnglesChanged</a></b> ( int <i>availableAngles</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#availableChaptersChanged">availableChaptersChanged</a></b> ( int <i>availableChapters</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#availableTitlesChanged">availableTitlesChanged</a></b> ( int <i>availableTitles</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#chapterChanged">chapterChanged</a></b> ( int <i>chapterNumber</i> )</td></tr>
<tr><td class="memItemLeft rightAlign topAlign"> void </td><td class="memItemRight bottomAlign"><b><a href="phonon-mediacontroller.html#titleChanged">titleChanged</a></b> ( int <i>titleNumber</i> )</td></tr>
</table>
<ul>
<li class="fn">1 signal inherited from <a href="qobject.html#signals">QObject</a></li>
</ul>
<h3>Additional Inherited Members</h3>
<ul>
<li class="fn">1 property inherited from <a href="qobject.html#properties">QObject</a></li>
<li class="fn">7 static public members inherited from <a href="qobject.html#static-public-members">QObject</a></li>
<li class="fn">8 protected functions inherited from <a href="qobject.html#protected-functions">QObject</a></li>
</ul>
<a name="details"></a>
<!-- $$$MediaController-description -->
<div class="descr">
<h2>Detailed Description</h2>
<p>The MediaController class controls optional features of a media file/device.</p>
<p>Some media sources have content that the <a href="phonon-mediaobject.html">MediaObject</a> does not provide control over, for instance, chapters in a DVD file. The functionality the media controller offers is dependent on the type of media source that is played back. Commonly, the media controller allows you to:</p>
<ul>
<li>Navigate between <b>chapters</b>.</li>
<li>Navigate between <b>titles</b>.</li>
<li>Select between <b>angles</b>.</li>
</ul>
<p>The <a href="phonon-mediacontroller.html#Feature-enum">Feature</a> enum explains these terms in more detail, and their context in playback of CD and DVD.</p>
<p>The media controller keeps a <a href="phonon-mediaobject.html">MediaObject</a>, of which <a href="phonon-mediaobject.html#currentSource">media source</a> is played back. You can still call the media object's functions, e.g&#x2e;, <a href="phonon-mediaobject.html#stop">stop()</a>; this is all handled correctly by the media controller. You have the option of letting the media controller play all titles of a source in sequence by setting the <a href="phonon-mediacontroller.html#autoplayTitles">autoplay titles</a> option.</p>
<p>To start a playback using a media object, you call <a href="phonon-mediaobject.html#play">play()</a> on the media object. To play a specific title, use <a href="phonon-mediacontroller.html#setCurrentTitle">setCurrentTitle</a>() and then call <a href="phonon-mediaobject.html#play">play()</a>.</p>
<p><b>Warning:</b> The Phonon::MediaController class is not yet supported by Qt backends.</p>
</div>
<p><b>See also </b><a href="phonon-module.html">Phonon Module</a>.</p>
<!-- @@@MediaController -->
<div class="types">
<h2>Member Type Documentation</h2>
<!-- $$$Feature$$$Angles$$$Chapters$$$Titles -->
<h3 class="flags"><a name="Feature-enum"></a>enum MediaController::<span class="name">Feature</span><br/>flags MediaController::<span class="name">Features</span></h3>
<p>The values of this enum are interpreted differently depending on the type of media source, e.g&#x2e;, DVD or CD. We give examples for these sources.</p>
<table class="valuelist"><tr valign="top" class="odd"><th class="tblConst">Constant</th><th class="tblval">Value</th><th class="tbldscr">Description</th></tr>
<tr><td class="topAlign"><tt>Phonon::MediaController::Angles</tt></td><td class="topAlign"><tt>1</tt></td><td class="topAlign">In the VOB (DVD) format, it is possible to to give several video streams of the same scene, each of which displays the scene from a different angle. The DVD viewer can then change between these angles.</td></tr>
<tr><td class="topAlign"><tt>Phonon::MediaController::Chapters</tt></td><td class="topAlign"><tt>2</tt></td><td class="topAlign">In the VOB format, chapters are points in a single video stream that can be played and seeked to separately.</td></tr>
<tr><td class="topAlign"><tt>Phonon::MediaController::Titles</tt></td><td class="topAlign"><tt>4</tt></td><td class="topAlign">On a CD, a title is a separate sound track. On DVD, a title is a separate VOB file.</td></tr>
</table>
<p>The Features type is a typedef for <a href="qflags.html">QFlags</a>&lt;Feature&gt;. It stores an OR combination of Feature values.</p>
<!-- @@@Feature -->
</div>
<div class="func">
<h2>Member Function Documentation</h2>
<!-- $$$MediaController[overload1]$$$MediaControllerMediaObject* -->
<h3 class="fn"><a name="MediaController"></a>MediaController::<span class="name">MediaController</span> ( <span class="type"><a href="phonon-mediaobject.html">MediaObject</a></span> * <i>parent</i> )</h3>
<p>Constructs a new <a href="phonon-mediacontroller.html">MediaController</a> with the media object (<i>parent</i>) to be used by the media controller.</p>
<p><b>See also </b><a href="phonon-mediaobject.html">MediaObject</a> and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@MediaController -->
<!-- $$$~MediaController[overload1]$$$~MediaController -->
<h3 class="fn"><a name="dtor.MediaController"></a>MediaController::<span class="name">~MediaController</span> ()</h3>
<!-- @@@~MediaController -->
<!-- $$$angleChanged[overload1]$$$angleChangedint -->
<h3 class="fn"><a name="angleChanged"></a><span class="type">void</span> MediaController::<span class="name">angleChanged</span> ( <span class="type">int</span> <i>angleNumber</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted whenever the current angle changes. The new angle number is given by <i>angleNumber</i>.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@angleChanged -->
<!-- $$$autoplayTitles[overload1]$$$autoplayTitles -->
<h3 class="fn"><a name="autoplayTitles"></a><span class="type">bool</span> MediaController::<span class="name">autoplayTitles</span> () const</h3>
<p>Returns true if titles will automatically be played when the media is played; otherwise returns false.</p>
<p>The media controller will play the titles of the media source in sequence when the media object's <a href="phonon-mediaobject.html#play">play()</a> function is called. If the autoplay option is disabled, the media object will play the <a href="phonon-mediacontroller.html#currentTitle">MediaController::currentTitle()</a>{current title} and then finish the playback.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#setAutoplayTitles">setAutoplayTitles</a>() and <a href="phonon-mediacontroller.html#currentTitle">currentTitle</a>().</p>
<!-- @@@autoplayTitles -->
<!-- $$$availableAngles[overload1]$$$availableAngles -->
<h3 class="fn"><a name="availableAngles"></a><span class="type">int</span> MediaController::<span class="name">availableAngles</span> () const</h3>
<p>Returns the available angles that is available for the current media source.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@availableAngles -->
<!-- $$$availableAnglesChanged[overload1]$$$availableAnglesChangedint -->
<h3 class="fn"><a name="availableAnglesChanged"></a><span class="type">void</span> MediaController::<span class="name">availableAnglesChanged</span> ( <span class="type">int</span> <i>availableAngles</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted whenever the number of available angles changes. The new number of available angles is given by <i>availableAngles</i>.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@availableAnglesChanged -->
<!-- $$$availableChapters[overload1]$$$availableChapters -->
<h3 class="fn"><a name="availableChapters"></a><span class="type">int</span> MediaController::<span class="name">availableChapters</span> () const</h3>
<p>Returns the number of chapters the current media source contains.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@availableChapters -->
<!-- $$$availableChaptersChanged[overload1]$$$availableChaptersChangedint -->
<h3 class="fn"><a name="availableChaptersChanged"></a><span class="type">void</span> MediaController::<span class="name">availableChaptersChanged</span> ( <span class="type">int</span> <i>availableChapters</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted whenever the number of available chapters changes. The new number of available chapters is given by <i>availableChapters</i>.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@availableChaptersChanged -->
<!-- $$$availableTitles[overload1]$$$availableTitles -->
<h3 class="fn"><a name="availableTitles"></a><span class="type">int</span> MediaController::<span class="name">availableTitles</span> () const</h3>
<p>Returns the number of titles that the current media source contains.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@availableTitles -->
<!-- $$$availableTitlesChanged[overload1]$$$availableTitlesChangedint -->
<h3 class="fn"><a name="availableTitlesChanged"></a><span class="type">void</span> MediaController::<span class="name">availableTitlesChanged</span> ( <span class="type">int</span> <i>availableTitles</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted whenever the number of available titles changes. The new number of available titles is given by <i>availableTitles</i>.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@availableTitlesChanged -->
<!-- $$$chapterChanged[overload1]$$$chapterChangedint -->
<h3 class="fn"><a name="chapterChanged"></a><span class="type">void</span> MediaController::<span class="name">chapterChanged</span> ( <span class="type">int</span> <i>chapterNumber</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted whenever the current chapter changes. The new chapter number is given by <i>chapterNumber</i>.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@chapterChanged -->
<!-- $$$currentAngle[overload1]$$$currentAngle -->
<h3 class="fn"><a name="currentAngle"></a><span class="type">int</span> MediaController::<span class="name">currentAngle</span> () const</h3>
<p>Returns the angle that is currently used.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#setCurrentAngle">setCurrentAngle</a>() and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@currentAngle -->
<!-- $$$currentChapter[overload1]$$$currentChapter -->
<h3 class="fn"><a name="currentChapter"></a><span class="type">int</span> MediaController::<span class="name">currentChapter</span> () const</h3>
<p>Returns the chapter that is currently being played back.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#setCurrentChapter">setCurrentChapter</a>() and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@currentChapter -->
<!-- $$$currentTitle[overload1]$$$currentTitle -->
<h3 class="fn"><a name="currentTitle"></a><span class="type">int</span> MediaController::<span class="name">currentTitle</span> () const</h3>
<p>Returns the title that is currently played back.</p>
<p>The current title is 0 (the first) by default.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#setCurrentTitle">setCurrentTitle</a>() and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@currentTitle -->
<!-- $$$nextTitle[overload1]$$$nextTitle -->
<h3 class="fn"><a name="nextTitle"></a><span class="type">void</span> MediaController::<span class="name">nextTitle</span> ()<tt> [slot]</tt></h3>
<p>Skips to the next title.</p>
<p>If it was playing before the title change it will start playback on the next title if autoplayTitles is enabled.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@nextTitle -->
<!-- $$$previousTitle[overload1]$$$previousTitle -->
<h3 class="fn"><a name="previousTitle"></a><span class="type">void</span> MediaController::<span class="name">previousTitle</span> ()<tt> [slot]</tt></h3>
<p>Skips to the previous title.</p>
<p>If it was playing before the title change it will start playback on the previous title if autoplayTitles is enabled.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@previousTitle -->
<!-- $$$setAutoplayTitles[overload1]$$$setAutoplayTitlesbool -->
<h3 class="fn"><a name="setAutoplayTitles"></a><span class="type">void</span> MediaController::<span class="name">setAutoplayTitles</span> ( <span class="type">bool</span> <i>enable</i> )<tt> [slot]</tt></h3>
<p>Sets the titles to play automatically when the media is played if <i>enable</i> is true; otherwise disables this option.</p>
<p>The media controller will play the titles of the media source in sequence when the media object's <a href="phonon-mediaobject.html#play">play()</a> function is called. If the autoplay option is disabled, the media object will play the <a href="phonon-mediacontroller.html#currentTitle">MediaController::currentTitle()</a>{current title} and then finish the playback.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#autoplayTitles">autoplayTitles</a>() and <a href="phonon-mediacontroller.html#currentTitle">currentTitle</a>().</p>
<!-- @@@setAutoplayTitles -->
<!-- $$$setCurrentAngle[overload1]$$$setCurrentAngleint -->
<h3 class="fn"><a name="setCurrentAngle"></a><span class="type">void</span> MediaController::<span class="name">setCurrentAngle</span> ( <span class="type">int</span> <i>angleNumber</i> )<tt> [slot]</tt></h3>
<p>Sets the current angle to the given <i>angleNumber</i> if the media file or device supports navigation by angle number.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#currentAngle">currentAngle</a>() and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@setCurrentAngle -->
<!-- $$$setCurrentChapter[overload1]$$$setCurrentChapterint -->
<h3 class="fn"><a name="setCurrentChapter"></a><span class="type">void</span> MediaController::<span class="name">setCurrentChapter</span> ( <span class="type">int</span> <i>chapterNumber</i> )<tt> [slot]</tt></h3>
<p>Sets the current chapter to the given <i>chapterNumber</i> if the media file or device supports navigation by chapter number.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#currentChapter">currentChapter</a>() and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@setCurrentChapter -->
<!-- $$$setCurrentTitle[overload1]$$$setCurrentTitleint -->
<h3 class="fn"><a name="setCurrentTitle"></a><span class="type">void</span> MediaController::<span class="name">setCurrentTitle</span> ( <span class="type">int</span> <i>titleNumber</i> )<tt> [slot]</tt></h3>
<p>Skips to the given title <i>titleNumber</i>.</p>
<p>If it was playing before the title change it will start playback on the new title if autoplayTitles is enabled.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#currentTitle">currentTitle</a>() and <a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@setCurrentTitle -->
<!-- $$$supportedFeatures[overload1]$$$supportedFeatures -->
<h3 class="fn"><a name="supportedFeatures"></a><span class="type"><a href="phonon-mediacontroller.html#Feature-enum">Features</a></span> MediaController::<span class="name">supportedFeatures</span> () const</h3>
<!-- @@@supportedFeatures -->
<!-- $$$titleChanged[overload1]$$$titleChangedint -->
<h3 class="fn"><a name="titleChanged"></a><span class="type">void</span> MediaController::<span class="name">titleChanged</span> ( <span class="type">int</span> <i>titleNumber</i> )<tt> [signal]</tt></h3>
<p>This signal is emitted whenever the current title changes. The new title number is given by <i>titleNumber</i>.</p>
<p><b>See also </b><a href="phonon-mediacontroller.html#Feature-enum">Feature</a>.</p>
<!-- @@@titleChanged -->
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