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media3/docs/doc/reference/com/google/android/exoplayer2/TracksInfo.TrackGroupInfo.html
tonihei 468e4aa0c4 Update Javadoc for 2.16.0 
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2021-11-04 01:03:22 +00:00

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<title>TracksInfo.TrackGroupInfo (ExoPlayer library)</title>
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<div class="subTitle"><span class="packageLabelInType">Package</span>&nbsp;<a href="package-summary.html">com.google.android.exoplayer2</a></div>
<h2 title="Class TracksInfo.TrackGroupInfo" class="title">Class TracksInfo.TrackGroupInfo</h2>
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<ul class="inheritance">
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<li>com.google.android.exoplayer2.TracksInfo.TrackGroupInfo</li>
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<dt>Enclosing class:</dt>
<dd><a href="TracksInfo.html" title="class in com.google.android.exoplayer2">TracksInfo</a></dd>
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<pre>public static final class <span class="typeNameLabel">TracksInfo.TrackGroupInfo</span>
extends <a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>
implements <a href="Bundleable.html" title="interface in com.google.android.exoplayer2">Bundleable</a></pre>
<div class="block">Information about tracks in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>: their <a href="C.TrackType.html" title="annotation in com.google.android.exoplayer2"><code>C.TrackType</code></a>, if their format is
supported by the player and if they are selected for playback.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;com.google.android.exoplayer2.<a href="Bundleable.html" title="interface in com.google.android.exoplayer2">Bundleable</a></h3>
<code><a href="Bundleable.Creator.html" title="interface in com.google.android.exoplayer2">Bundleable.Creator</a>&lt;<a href="Bundleable.Creator.html" title="type parameter in Bundleable.Creator">T</a> extends <a href="Bundleable.html" title="interface in com.google.android.exoplayer2">Bundleable</a>&gt;</code></li>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Field</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tr class="altColor">
<td class="colFirst"><code>static <a href="Bundleable.Creator.html" title="interface in com.google.android.exoplayer2">Bundleable.Creator</a>&lt;<a href="TracksInfo.TrackGroupInfo.html" title="class in com.google.android.exoplayer2">TracksInfo.TrackGroupInfo</a>&gt;</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#CREATOR">CREATOR</a></span></code></th>
<td class="colLast">
<div class="block">Object that can restores a <code>TracksInfo</code> from a <a href="https://developer.android.com/reference/android/os/Bundle.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Bundle</code></a>.</div>
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<th class="colFirst" scope="col">Constructor</th>
<th class="colLast" scope="col">Description</th>
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<tr class="altColor">
<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(com.google.android.exoplayer2.source.TrackGroup,int%5B%5D,@com.google.android.exoplayer2.C.TrackTypeint,boolean%5B%5D)">TrackGroupInfo</a></span>&#8203;(<a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a>&nbsp;trackGroup,
int[]&nbsp;trackSupport,
@com.google.android.exoplayer2.C.TrackType int&nbsp;trackType,
boolean[]&nbsp;tracksSelected)</code></th>
<td class="colLast">
<div class="block">Constructs a TrackGroupInfo.</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colSecond" scope="col">Method</th>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#equals(java.lang.Object)">equals</a></span>&#8203;(<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>&nbsp;other)</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTrackGroup()">getTrackGroup</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> described by this <code>TrackGroupInfo</code>.</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTrackSupport(int)">getTrackSupport</a></span>&#8203;(int&nbsp;trackIndex)</code></th>
<td class="colLast">
<div class="block">Returns the level of support for a track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>.</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>@com.google.android.exoplayer2.C.TrackType int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getTrackType()">getTrackType</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns the <a href="C.TrackType.html" title="annotation in com.google.android.exoplayer2"><code>C.TrackType</code></a> of the tracks in the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>.</div>
</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>int</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#hashCode()">hashCode</a></span>()</code></th>
<td class="colLast">&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isSelected()">isSelected</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns if at least one track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is selected for playback.</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isSupported()">isSupported</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns if at least one track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is supported.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isTrackSelected(int)">isTrackSelected</a></span>&#8203;(int&nbsp;trackIndex)</code></th>
<td class="colLast">
<div class="block">Returns if a track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is selected for playback.</div>
</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#isTrackSupported(int)">isTrackSupported</a></span>&#8203;(int&nbsp;trackIndex)</code></th>
<td class="colLast">
<div class="block">Returns if a track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is supported for playback.</div>
</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code><a href="https://developer.android.com/reference/android/os/Bundle.html" title="class or interface in android.os" class="externalLink" target="_top">Bundle</a></code></td>
<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#toBundle()">toBundle</a></span>()</code></th>
<td class="colLast">
<div class="block">Returns a <a href="https://developer.android.com/reference/android/os/Bundle.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Bundle</code></a> representing the information stored in this object.</div>
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<h3>Methods inherited from class&nbsp;java.lang.<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a></h3>
<code><a href="https://developer.android.com/reference/java/lang/Object.html#clone()" title="class or interface in java.lang" class="externalLink">clone</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink">finalize</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink">getClass</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink">notify</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink">notifyAll</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink">toString</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink">wait</a>, <a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_top">wait</a></code></li>
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<a id="CREATOR">
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<h4>CREATOR</h4>
<pre>public static final&nbsp;<a href="Bundleable.Creator.html" title="interface in com.google.android.exoplayer2">Bundleable.Creator</a>&lt;<a href="TracksInfo.TrackGroupInfo.html" title="class in com.google.android.exoplayer2">TracksInfo.TrackGroupInfo</a>&gt; CREATOR</pre>
<div class="block">Object that can restores a <code>TracksInfo</code> from a <a href="https://developer.android.com/reference/android/os/Bundle.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Bundle</code></a>.</div>
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<h3>Constructor Detail</h3>
<a id="&lt;init&gt;(com.google.android.exoplayer2.source.TrackGroup,int[],@com.google.android.exoplayer2.C.TrackTypeint,boolean[])">
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<h4>TrackGroupInfo</h4>
<pre>public&nbsp;TrackGroupInfo&#8203;(<a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a>&nbsp;trackGroup,
<a href="C.FormatSupport.html" title="annotation in com.google.android.exoplayer2">@FormatSupport</a>
int[]&nbsp;trackSupport,
@com.google.android.exoplayer2.C.TrackType int&nbsp;trackType,
boolean[]&nbsp;tracksSelected)</pre>
<div class="block">Constructs a TrackGroupInfo.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>trackGroup</code> - The <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> described.</dd>
<dd><code>trackSupport</code> - The <a href="C.FormatSupport.html" title="annotation in com.google.android.exoplayer2"><code>C.FormatSupport</code></a> of each track in the <code>trackGroup</code>.</dd>
<dd><code>trackType</code> - The <a href="C.TrackType.html" title="annotation in com.google.android.exoplayer2"><code>C.TrackType</code></a> of the tracks in the <code>trackGroup</code>.</dd>
<dd><code>tracksSelected</code> - Whether a track is selected for each track in <code>trackGroup</code>.</dd>
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<h4>getTrackGroup</h4>
<pre class="methodSignature">public&nbsp;<a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a>&nbsp;getTrackGroup()</pre>
<div class="block">Returns the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> described by this <code>TrackGroupInfo</code>.</div>
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<a id="getTrackSupport(int)">
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<h4>getTrackSupport</h4>
<pre class="methodSignature"><a href="C.FormatSupport.html" title="annotation in com.google.android.exoplayer2">@FormatSupport</a>
public&nbsp;int&nbsp;getTrackSupport&#8203;(int&nbsp;trackIndex)</pre>
<div class="block">Returns the level of support for a track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>trackIndex</code> - The index of the track in the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>The <a href="C.FormatSupport.html" title="annotation in com.google.android.exoplayer2"><code>C.FormatSupport</code></a> of the track.</dd>
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<h4>isTrackSupported</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isTrackSupported&#8203;(int&nbsp;trackIndex)</pre>
<div class="block">Returns if a track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is supported for playback.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>trackIndex</code> - The index of the track in the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>True if the track's format can be played, false otherwise.</dd>
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<h4>isSelected</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isSelected()</pre>
<div class="block">Returns if at least one track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is selected for playback.</div>
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<h4>isSupported</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isSupported()</pre>
<div class="block">Returns if at least one track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is supported.</div>
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<h4>isTrackSelected</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;isTrackSelected&#8203;(int&nbsp;trackIndex)</pre>
<div class="block">Returns if a track in a <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a> is selected for playback.
<p>Multiple tracks of a track group may be selected. This is common in adaptive streaming,
where multiple tracks of different quality are selected and the player switches between them
depending on the network and the <a href="trackselection/TrackSelectionParameters.html" title="class in com.google.android.exoplayer2.trackselection"><code>TrackSelectionParameters</code></a>.
<p>While this class doesn't provide which selected track is currently playing, some player
implementations have ways of getting such information. For example ExoPlayer provides this
information in <code>ExoTrackSelection.getSelectedFormat</code>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>trackIndex</code> - The index of the track in the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if the track is selected, false otherwise.</dd>
</dl>
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<h4>getTrackType</h4>
<pre class="methodSignature">public&nbsp;@com.google.android.exoplayer2.C.TrackType int&nbsp;getTrackType()</pre>
<div class="block">Returns the <a href="C.TrackType.html" title="annotation in com.google.android.exoplayer2"><code>C.TrackType</code></a> of the tracks in the <a href="source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Tracks in a group
are all of the same type.</div>
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<h4>equals</h4>
<pre class="methodSignature">public&nbsp;boolean&nbsp;equals&#8203;(@Nullable
<a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a>&nbsp;other)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://developer.android.com/reference/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink">equals</a></code>&nbsp;in class&nbsp;<code><a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_top">Object</a></code></dd>
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<h4>hashCode</h4>
<pre class="methodSignature">public&nbsp;int&nbsp;hashCode()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://developer.android.com/reference/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="externalLink">hashCode</a></code>&nbsp;in class&nbsp;<code><a href="https://developer.android.com/reference/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_top">Object</a></code></dd>
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<h4>toBundle</h4>
<pre class="methodSignature">public&nbsp;<a href="https://developer.android.com/reference/android/os/Bundle.html" title="class or interface in android.os" class="externalLink" target="_top">Bundle</a>&nbsp;toBundle()</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="Bundleable.html#toBundle()">Bundleable</a></code></span></div>
<div class="block">Returns a <a href="https://developer.android.com/reference/android/os/Bundle.html" title="class or interface in android.os" class="externalLink" target="_top"><code>Bundle</code></a> representing the information stored in this object.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="Bundleable.html#toBundle()">toBundle</a></code>&nbsp;in interface&nbsp;<code><a href="Bundleable.html" title="interface in com.google.android.exoplayer2">Bundleable</a></code></dd>
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