Revert "Update ExoPlayer to 2.18.2"

This commit reverts 1bb166a

app/build.gradle

@@ -102,7 +102,7 @@ ext {
     androidxWorkVersion = '2.7.1'
 
     icepickVersion = '3.2.0'
-    exoPlayerVersion = '2.18.2'
+    exoPlayerVersion = '2.18.1'
     googleAutoServiceVersion = '1.0.1'
     groupieVersion = '2.10.1'
     markwonVersion = '4.6.2'

app/src/main/java/org/schabi/newpipe/player/mediasource/LoadedMediaSource.java

@@ -1,21 +1,27 @@
 package org.schabi.newpipe.player.mediasource;
 
-import androidx.annotation.NonNull;
-
 import com.google.android.exoplayer2.MediaItem;
+import com.google.android.exoplayer2.Timeline;
+import com.google.android.exoplayer2.source.CompositeMediaSource;
+import com.google.android.exoplayer2.source.MediaPeriod;
 import com.google.android.exoplayer2.source.MediaSource;
-import com.google.android.exoplayer2.source.WrappingMediaSource;
+import com.google.android.exoplayer2.upstream.Allocator;
+import com.google.android.exoplayer2.upstream.TransferListener;
 
 import org.schabi.newpipe.player.mediaitem.MediaItemTag;
 import org.schabi.newpipe.player.playqueue.PlayQueueItem;
 
-public class LoadedMediaSource extends WrappingMediaSource implements ManagedMediaSource {
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+public class LoadedMediaSource extends CompositeMediaSource<Integer> implements ManagedMediaSource {
+    private final MediaSource source;
     private final PlayQueueItem stream;
     private final MediaItem mediaItem;
     private final long expireTimestamp;
 
     /**
-     * Uses a {@link WrappingMediaSource} to wrap one child {@link MediaSource}
+     * Uses a {@link CompositeMediaSource} to wrap one or more child {@link MediaSource}s
      * containing actual media. This wrapper {@link LoadedMediaSource} holds the expiration
      * timestamp as a {@link ManagedMediaSource} to allow explicit playlist management under
      * {@link ManagedMediaSourcePlaylist}.
@@ -30,7 +36,7 @@ public class LoadedMediaSource extends WrappingMediaSource implements ManagedMed
                              @NonNull final MediaItemTag tag,
                              @NonNull final PlayQueueItem stream,
                              final long expireTimestamp) {
-        super(source);
+        this.source = source;
         this.stream = stream;
         this.expireTimestamp = expireTimestamp;
 
@@ -45,6 +51,51 @@ public class LoadedMediaSource extends WrappingMediaSource implements ManagedMed
         return System.currentTimeMillis() >= expireTimestamp;
     }
 
+    /**
+     * Delegates the preparation of child {@link MediaSource}s to the
+     * {@link CompositeMediaSource} wrapper. Since all {@link LoadedMediaSource}s use only
+     * a single child media, the child id of 0 is always used (sonar doesn't like null as id here).
+     *
+     * @param mediaTransferListener A data transfer listener that will be registered by the
+     *                              {@link CompositeMediaSource} for child source preparation.
+     */
+    @Override
+    protected void prepareSourceInternal(@Nullable final TransferListener mediaTransferListener) {
+        super.prepareSourceInternal(mediaTransferListener);
+        prepareChildSource(0, source);
+    }
+
+    /**
+     * When any child {@link MediaSource} is prepared, the refreshed {@link Timeline} can
+     * be listened to here. But since {@link LoadedMediaSource} has only a single child source,
+     * this method is called only once until {@link #releaseSourceInternal()} is called.
+     * <br><br>
+     * On refresh, the {@link CompositeMediaSource} delegate will be notified with the
+     * new {@link Timeline}, otherwise {@link #createPeriod(MediaPeriodId, Allocator, long)}
+     * will not be called and playback may be stalled.
+     *
+     * @param id            The unique id used to prepare the child source.
+     * @param mediaSource   The child source whose source info has been refreshed.
+     * @param timeline      The new timeline of the child source.
+     */
+    @Override
+    protected void onChildSourceInfoRefreshed(final Integer id,
+                                              final MediaSource mediaSource,
+                                              final Timeline timeline) {
+        refreshSourceInfo(timeline);
+    }
+
+    @Override
+    public MediaPeriod createPeriod(final MediaPeriodId id, final Allocator allocator,
+                                    final long startPositionUs) {
+        return source.createPeriod(id, allocator, startPositionUs);
+    }
+
+    @Override
+    public void releasePeriod(final MediaPeriod mediaPeriod) {
+        source.releasePeriod(mediaPeriod);
+    }
+
     @NonNull
     @Override
     public MediaItem getMediaItem() {