Rename Listener for timeline update to avoid confusion with MediaSourceEventListener.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=187313128

extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsMediaSource.java

@@ -38,7 +38,7 @@ public final class ImaAdsMediaSource extends BaseMediaSource {
 
   private final AdsMediaSource adsMediaSource;
 
-  private Listener adsMediaSourceListener;
+  private SourceInfoRefreshListener adsMediaSourceListener;
 
   /**
    * Constructs a new source that inserts ads linearly with the content specified by
@@ -79,7 +79,7 @@ public final class ImaAdsMediaSource extends BaseMediaSource {
   @Override
   public void prepareSourceInternal(final ExoPlayer player, boolean isTopLevelSource) {
     adsMediaSourceListener =
-        new Listener() {
+        new SourceInfoRefreshListener() {
           @Override
           public void onSourceInfoRefreshed(
               MediaSource source, Timeline timeline, @Nullable Object manifest) {

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImplInternal.java

@@ -48,7 +48,7 @@ import java.util.Collections;
     implements Handler.Callback,
         MediaPeriod.Callback,
         TrackSelector.InvalidationListener,
-        MediaSource.Listener,
+        MediaSource.SourceInfoRefreshListener,
         PlaybackParameterListener,
         PlayerMessage.Sender {
 
@@ -243,7 +243,7 @@ import java.util.Collections;
     return internalPlaybackThread.getLooper();
   }
 
-  // MediaSource.Listener implementation.
+  // MediaSource.SourceInfoRefreshListener implementation.
 
   @Override
   public void onSourceInfoRefreshed(MediaSource source, Timeline timeline, Object manifest) {

library/core/src/main/java/com/google/android/exoplayer2/source/BaseMediaSource.java

@@ -29,7 +29,7 @@ import java.util.ArrayList;
  */
 public abstract class BaseMediaSource implements MediaSource {
 
-  private final ArrayList<Listener> sourceInfoListeners;
+  private final ArrayList<SourceInfoRefreshListener> sourceInfoListeners;
 
   private ExoPlayer player;
   private Timeline timeline;
@@ -65,13 +65,14 @@ public abstract class BaseMediaSource implements MediaSource {
   protected final void refreshSourceInfo(Timeline timeline, @Nullable Object manifest) {
     this.timeline = timeline;
     this.manifest = manifest;
-    for (Listener listener : sourceInfoListeners) {
+    for (SourceInfoRefreshListener listener : sourceInfoListeners) {
       listener.onSourceInfoRefreshed(/* source= */ this, timeline, manifest);
     }
   }
 
   @Override
-  public final void prepareSource(ExoPlayer player, boolean isTopLevelSource, Listener listener) {
+  public final void prepareSource(
+      ExoPlayer player, boolean isTopLevelSource, SourceInfoRefreshListener listener) {
     Assertions.checkArgument(this.player == null || this.player == player);
     sourceInfoListeners.add(listener);
     if (this.player == null) {
@@ -83,7 +84,7 @@ public abstract class BaseMediaSource implements MediaSource {
   }
 
   @Override
-  public final void releaseSource(Listener listener) {
+  public final void releaseSource(SourceInfoRefreshListener listener) {
     sourceInfoListeners.remove(listener);
     if (sourceInfoListeners.isEmpty()) {
       player = null;

library/core/src/main/java/com/google/android/exoplayer2/source/CompositeMediaSource.java

@@ -88,8 +88,8 @@ public abstract class CompositeMediaSource<T> extends BaseMediaSource {
    */
   protected final void prepareChildSource(@Nullable final T id, MediaSource mediaSource) {
     Assertions.checkArgument(!childSources.containsKey(id));
-    Listener sourceListener =
-        new Listener() {
+    SourceInfoRefreshListener sourceListener =
+        new SourceInfoRefreshListener() {
           @Override
           public void onSourceInfoRefreshed(
               MediaSource source, Timeline timeline, @Nullable Object manifest) {
@@ -113,9 +113,9 @@ public abstract class CompositeMediaSource<T> extends BaseMediaSource {
   private static final class MediaSourceAndListener {
 
     public final MediaSource mediaSource;
-    public final Listener listener;
+    public final SourceInfoRefreshListener listener;
 
-    public MediaSourceAndListener(MediaSource mediaSource, Listener listener) {
+    public MediaSourceAndListener(MediaSource mediaSource, SourceInfoRefreshListener listener) {
       this.mediaSource = mediaSource;
       this.listener = listener;
     }

library/core/src/main/java/com/google/android/exoplayer2/source/MediaPeriod.java

@@ -53,8 +53,9 @@ public interface MediaPeriod extends SequenceableLoader {
    * {@link #maybeThrowPrepareError()} will throw an {@link IOException}.
    *
    * <p>If preparation succeeds and results in a source timeline change (e.g. the period duration
-   * becoming known), {@link MediaSource.Listener#onSourceInfoRefreshed(MediaSource, Timeline,
-   * Object)} will be called before {@code callback.onPrepared}.
+   * becoming known), {@link
+   * MediaSource.SourceInfoRefreshListener#onSourceInfoRefreshed(MediaSource, Timeline, Object)}
+   * will be called before {@code callback.onPrepared}.
    *
    * @param callback Callback to receive updates from this period, including being notified when
    *     preparation completes.

library/core/src/main/java/com/google/android/exoplayer2/source/MediaSource.java

@@ -29,8 +29,9 @@ import java.io.IOException;
  * <ul>
  *   <li>To provide the player with a {@link Timeline} defining the structure of its media, and to
  *       provide a new timeline whenever the structure of the media changes. The MediaSource
- *       provides these timelines by calling {@link Listener#onSourceInfoRefreshed} on the {@link
- *       Listener}s passed to {@link #prepareSource(ExoPlayer, boolean, Listener)}.
+ *       provides these timelines by calling {@link SourceInfoRefreshListener#onSourceInfoRefreshed}
+ *       on the {@link SourceInfoRefreshListener}s passed to {@link #prepareSource(ExoPlayer,
+ *       boolean, SourceInfoRefreshListener)}.
  *   <li>To provide {@link MediaPeriod} instances for the periods in its timeline. MediaPeriods are
  *       obtained by calling {@link #createPeriod(MediaPeriodId, Allocator)}, and provide a way for
  *       the player to load and read the media.
@@ -42,10 +43,8 @@ import java.io.IOException;
  */
 public interface MediaSource {
 
-  /**
-   * Listener for source events.
-   */
-  interface Listener {
+  /** Listener for source events. */
+  interface SourceInfoRefreshListener {
 
     /**
      * Called when manifest and/or timeline has been refreshed.
@@ -180,17 +179,18 @@ public interface MediaSource {
    *
    * <p>The listener will be also be notified if the source already has a timeline and/or manifest.
    *
-   * <p>For each call to this method, a call to {@link #releaseSource(Listener)} is needed to remove
-   * the listener and to release the source if no longer required.
+   * <p>For each call to this method, a call to {@link #releaseSource(SourceInfoRefreshListener)} is
+   * needed to remove the listener and to release the source if no longer required.
    *
    * @param player The player for which this source is being prepared.
    * @param isTopLevelSource Whether this source has been passed directly to {@link
    *     ExoPlayer#prepare(MediaSource)} or {@link ExoPlayer#prepare(MediaSource, boolean,
    *     boolean)}. If {@code false}, this source is being prepared by another source (e.g. {@link
    *     ConcatenatingMediaSource}) for composition.
-   * @param listener The listener for source info updates to be added.
+   * @param listener The listener to be added.
    */
-  void prepareSource(ExoPlayer player, boolean isTopLevelSource, Listener listener);
+  void prepareSource(
+      ExoPlayer player, boolean isTopLevelSource, SourceInfoRefreshListener listener);
 
   /**
    * Throws any pending error encountered while loading or refreshing source information.
@@ -227,7 +227,7 @@ public interface MediaSource {
    *
    * <p>Should not be called directly from application code.
    *
-   * @param listener The listener for source info updates to be removed.
+   * @param listener The listener to be removed.
    */
-  void releaseSource(Listener listener);
+  void releaseSource(SourceInfoRefreshListener listener);
 }

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java

@@ -256,8 +256,8 @@ public final class DashMediaSource extends BaseMediaSource {
   public static final long DEFAULT_LIVE_PRESENTATION_DELAY_FIXED_MS = 30000;
 
   /**
-   * The interval in milliseconds between invocations of
-   * {@link MediaSource.Listener#onSourceInfoRefreshed(MediaSource, Timeline, Object)} when the
+   * The interval in milliseconds between invocations of {@link
+   * SourceInfoRefreshListener#onSourceInfoRefreshed(MediaSource, Timeline, Object)} when the
    * source's {@link Timeline} is changing dynamically (for example, for incomplete live streams).
    */
   private static final int NOTIFY_MANIFEST_INTERVAL_MS = 5000;

testutils_robolectric/src/main/java/com/google/android/exoplayer2/testutil/MediaSourceTestRunner.java

@@ -193,7 +193,10 @@ public class MediaSourceTestRunner {
         });
   }
 
-  /** Calls {@link MediaSource#releaseSource(Listener)} on the playback thread. */
+  /**
+   * Calls {@link MediaSource#releaseSource(MediaSource.SourceInfoRefreshListener)} on the playback
+   * thread.
+   */
   public void releaseSource() {
     runOnPlaybackThread(
         new Runnable() {
@@ -282,7 +285,7 @@ public class MediaSourceTestRunner {
     playbackThread.quit();
   }
 
-  private class MediaSourceListener implements MediaSource.Listener {
+  private class MediaSourceListener implements MediaSource.SourceInfoRefreshListener {
 
     @Override
     public void onSourceInfoRefreshed(MediaSource source, Timeline timeline, Object manifest) {