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<h2 title="Class RandomTrackSelection" class="title">Class RandomTrackSelection</h2>
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<li><a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html" title="class in com.google.android.exoplayer2.trackselection">com.google.android.exoplayer2.trackselection.BaseTrackSelection</a></li>
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<dd><code><a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html" title="interface in com.google.android.exoplayer2.trackselection">ExoTrackSelection</a></code>, <code><a href="../../../../../com/google/android/exoplayer2/trackselection/TrackSelection.html" title="interface in com.google.android.exoplayer2.trackselection">TrackSelection</a></code></dd>
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<pre>public final class <span class="typeNameLabel">RandomTrackSelection</span>
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extends <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html" title="class in com.google.android.exoplayer2.trackselection">BaseTrackSelection</a></pre>
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<div class="block">An <a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html" title="interface in com.google.android.exoplayer2.trackselection"><code>ExoTrackSelection</code></a> whose selected track is updated randomly.</div>
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<td class="colFirst"><code>static class </code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.Factory.html" title="class in com.google.android.exoplayer2.trackselection">RandomTrackSelection.Factory</a></span></code></th>
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<div class="block">Factory for <a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html" title="class in com.google.android.exoplayer2.trackselection"><code>RandomTrackSelection</code></a> instances.</div>
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<h3>Nested classes/interfaces inherited from interface com.google.android.exoplayer2.trackselection.<a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html" title="interface in com.google.android.exoplayer2.trackselection">ExoTrackSelection</a></h3>
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<code><a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.Definition.html" title="class in com.google.android.exoplayer2.trackselection">ExoTrackSelection.Definition</a></code></li>
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<h3>Fields inherited from class com.google.android.exoplayer2.trackselection.<a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html" title="class in com.google.android.exoplayer2.trackselection">BaseTrackSelection</a></h3>
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<code><a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#group">group</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#length">length</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#tracks">tracks</a></code></li>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#RandomTrackSelection-com.google.android.exoplayer2.source.TrackGroup-int...-">RandomTrackSelection</a></span>​(<a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a> group,
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int... tracks)</code></th>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#RandomTrackSelection-com.google.android.exoplayer2.source.TrackGroup-int:A-long-">RandomTrackSelection</a></span>​(<a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a> group,
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int[] tracks,
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long seed)</code></th>
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<td class="colLast"> </td>
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<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#RandomTrackSelection-com.google.android.exoplayer2.source.TrackGroup-int:A-java.util.Random-">RandomTrackSelection</a></span>​(<a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a> group,
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int[] tracks,
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<a href="https://developer.android.com/reference/java/util/Random.html" title="class or interface in java.util" class="externalLink" target="_top">Random</a> random)</code></th>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption>
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#getSelectedIndex--">getSelectedIndex</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Returns the index of the selected track.</div>
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</td>
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<tr id="i1" class="rowColor">
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<td class="colFirst"><code><a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a></code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#getSelectionData--">getSelectionData</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Returns optional data associated with the current track selection.</div>
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<tr id="i2" class="altColor">
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<td class="colFirst"><code>int</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#getSelectionReason--">getSelectionReason</a></span>()</code></th>
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<td class="colLast">
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<div class="block">Returns the reason for the current track selection.</div>
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<td class="colFirst"><code>void</code></td>
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<th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="../../../../../com/google/android/exoplayer2/trackselection/RandomTrackSelection.html#updateSelectedTrack-long-long-long-java.util.List-com.google.android.exoplayer2.source.chunk.MediaChunkIterator:A-">updateSelectedTrack</a></span>​(long playbackPositionUs,
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long bufferedDurationUs,
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long availableDurationUs,
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<a href="https://developer.android.com/reference/java/util/List.html" title="class or interface in java.util" class="externalLink">List</a><? extends <a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunk.html" title="class in com.google.android.exoplayer2.source.chunk" target="_top">MediaChunk</a>> queue,
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<a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunkIterator.html" title="interface in com.google.android.exoplayer2.source.chunk">MediaChunkIterator</a>[] mediaChunkIterators)</code></th>
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<td class="colLast">
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<div class="block">Updates the selected track for sources that load media in discrete <a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunk.html" title="class in com.google.android.exoplayer2.source.chunk"><code>MediaChunk</code></a>s.</div>
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<h3>Methods inherited from class com.google.android.exoplayer2.trackselection.<a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html" title="class in com.google.android.exoplayer2.trackselection">BaseTrackSelection</a></h3>
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<code><a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#blacklist-int-long-">blacklist</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#disable--">disable</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#enable--">enable</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#equals-java.lang.Object-">equals</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#evaluateQueueSize-long-java.util.List-">evaluateQueueSize</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#getFormat-int-">getFormat</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#getIndexInTrackGroup-int-">getIndexInTrackGroup</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#getSelectedFormat--">getSelectedFormat</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#getSelectedIndexInTrackGroup--">getSelectedIndexInTrackGroup</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#getTrackGroup--">getTrackGroup</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#hashCode--">hashCode</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#indexOf-int-">indexOf</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#indexOf-com.google.android.exoplayer2.Format-">indexOf</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#isBlacklisted-int-long-">isBlacklisted</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#length--">length</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/BaseTrackSelection.html#onPlaybackSpeed-float-">onPlaybackSpeed</a></code></li>
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<h3>Methods inherited from interface com.google.android.exoplayer2.trackselection.<a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html" title="interface in com.google.android.exoplayer2.trackselection">ExoTrackSelection</a></h3>
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<code><a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html#onDiscontinuity--">onDiscontinuity</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html#onPlayWhenReadyChanged-boolean-">onPlayWhenReadyChanged</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html#onRebuffer--">onRebuffer</a>, <a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html#shouldCancelChunkLoad-long-com.google.android.exoplayer2.source.chunk.Chunk-java.util.List-">shouldCancelChunkLoad</a></code></li>
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<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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<pre>public RandomTrackSelection​(<a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a> group,
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int... tracks)</pre>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>group</code> - The <a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Must not be null.</dd>
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<dd><code>tracks</code> - The indices of the selected tracks within the <a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Must not be
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<pre>public RandomTrackSelection​(<a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a> group,
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int[] tracks,
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long seed)</pre>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>group</code> - The <a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Must not be null.</dd>
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<dd><code>tracks</code> - The indices of the selected tracks within the <a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Must not be
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null or empty. May be in any order.</dd>
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<dd><code>seed</code> - A seed for the <a href="https://developer.android.com/reference/java/util/Random.html" title="class or interface in java.util" class="externalLink" target="_top"><code>Random</code></a> instance used to update the selected track.</dd>
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<pre>public RandomTrackSelection​(<a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source">TrackGroup</a> group,
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int[] tracks,
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<a href="https://developer.android.com/reference/java/util/Random.html" title="class or interface in java.util" class="externalLink" target="_top">Random</a> random)</pre>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>group</code> - The <a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Must not be null.</dd>
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<dd><code>tracks</code> - The indices of the selected tracks within the <a href="../../../../../com/google/android/exoplayer2/source/TrackGroup.html" title="class in com.google.android.exoplayer2.source"><code>TrackGroup</code></a>. Must not be
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null or empty. May be in any order.</dd>
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<dd><code>random</code> - A source of random numbers.</dd>
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<h4>updateSelectedTrack</h4>
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<pre>public void updateSelectedTrack​(long playbackPositionUs,
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long bufferedDurationUs,
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long availableDurationUs,
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<a href="https://developer.android.com/reference/java/util/List.html" title="class or interface in java.util" class="externalLink">List</a><? extends <a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunk.html" title="class in com.google.android.exoplayer2.source.chunk" target="_top">MediaChunk</a>> queue,
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<a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunkIterator.html" title="interface in com.google.android.exoplayer2.source.chunk">MediaChunkIterator</a>[] mediaChunkIterators)</pre>
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<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html#updateSelectedTrack-long-long-long-java.util.List-com.google.android.exoplayer2.source.chunk.MediaChunkIterator:A-">ExoTrackSelection</a></code></span></div>
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<div class="block">Updates the selected track for sources that load media in discrete <a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunk.html" title="class in com.google.android.exoplayer2.source.chunk"><code>MediaChunk</code></a>s.
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<p>This method will only be called when the selection is enabled.</div>
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<dl>
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<dt><span class="paramLabel">Parameters:</span></dt>
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<dd><code>playbackPositionUs</code> - The current playback position in microseconds. If playback of the
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period to which this track selection belongs has not yet started, the value will be the
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starting position in the period minus the duration of any media in previous periods still
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to be played.</dd>
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<dd><code>bufferedDurationUs</code> - The duration of media currently buffered from the current playback
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position, in microseconds. Note that the next load position can be calculated as <code>
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(playbackPositionUs + bufferedDurationUs)</code>.</dd>
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<dd><code>availableDurationUs</code> - The duration of media available for buffering from the current
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playback position, in microseconds, or <a href="../../../../../com/google/android/exoplayer2/C.html#TIME_UNSET"><code>C.TIME_UNSET</code></a> if media can be buffered to the
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end of the current period. Note that if not set to <a href="../../../../../com/google/android/exoplayer2/C.html#TIME_UNSET"><code>C.TIME_UNSET</code></a>, the position up to
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which media is available for buffering can be calculated as <code>(playbackPositionUs +
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availableDurationUs)</code>.</dd>
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<dd><code>queue</code> - The queue of already buffered <a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunk.html" title="class in com.google.android.exoplayer2.source.chunk"><code>MediaChunk</code></a>s. Must not be modified.</dd>
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<dd><code>mediaChunkIterators</code> - An array of <a href="../../../../../com/google/android/exoplayer2/source/chunk/MediaChunkIterator.html" title="interface in com.google.android.exoplayer2.source.chunk"><code>MediaChunkIterator</code></a>s providing information about
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the sequence of upcoming media chunks for each track in the selection. All iterators start
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from the media chunk which will be loaded next if the respective track is selected. Note
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that this information may not be available for all tracks, and so some iterators may be
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<div class="block">Returns the index of the selected track.</div>
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<pre>public int getSelectionReason()</pre>
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<div class="block">Returns the reason for the current track selection.</div>
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<h4>getSelectionData</h4>
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<pre>@Nullable
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public <a href="https://developer.android.com/reference/java/lang/Object.html" title="class or interface in java.lang" class="externalLink" target="_top">Object</a> getSelectionData()</pre>
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<div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../com/google/android/exoplayer2/trackselection/ExoTrackSelection.html#getSelectionData--">ExoTrackSelection</a></code></span></div>
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<div class="block">Returns optional data associated with the current track selection.</div>
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