Deprecate LoopingMediaSource.

There is no use case left where we couldn't use a better
alternative (either looping in the player, using the Player
playlist API, or ConcatenatingMediaSource for advanced cases)

PiperOrigin-RevId: 367990981

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

@@ -26,16 +26,10 @@ import com.google.android.exoplayer2.audio.AudioSink;
 import com.google.android.exoplayer2.audio.DefaultAudioSink;
 import com.google.android.exoplayer2.audio.MediaCodecAudioRenderer;
 import com.google.android.exoplayer2.metadata.MetadataRenderer;
-import com.google.android.exoplayer2.source.ClippingMediaSource;
-import com.google.android.exoplayer2.source.ConcatenatingMediaSource;
 import com.google.android.exoplayer2.source.DefaultMediaSourceFactory;
-import com.google.android.exoplayer2.source.LoopingMediaSource;
 import com.google.android.exoplayer2.source.MediaSource;
 import com.google.android.exoplayer2.source.MediaSourceFactory;
-import com.google.android.exoplayer2.source.MergingMediaSource;
-import com.google.android.exoplayer2.source.ProgressiveMediaSource;
 import com.google.android.exoplayer2.source.ShuffleOrder;
-import com.google.android.exoplayer2.source.SingleSampleMediaSource;
 import com.google.android.exoplayer2.text.TextRenderer;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
 import com.google.android.exoplayer2.trackselection.TrackSelector;
@@ -61,15 +55,13 @@ import java.util.List;
  * Components common to all ExoPlayer implementations are:
  *
  * <ul>
- *   <li>A <b>{@link MediaSource}</b> that defines the media to be played, loads the media, and from
- *       which the loaded media can be read. A MediaSource is injected via {@link
- *       #setMediaSource(MediaSource)} at the start of playback. The library modules provide default
- *       implementations for progressive media files ({@link ProgressiveMediaSource}), DASH
- *       (DashMediaSource), SmoothStreaming (SsMediaSource) and HLS (HlsMediaSource), an
- *       implementation for loading single media samples ({@link SingleSampleMediaSource}) that's
- *       most often used for side-loaded subtitle files, and implementations for building more
- *       complex MediaSources from simpler ones ({@link MergingMediaSource}, {@link
- *       ConcatenatingMediaSource}, {@link LoopingMediaSource} and {@link ClippingMediaSource}).
+ *   <li><b>{@link MediaSource MediaSources}</b> that define the media to be played, load the media,
+ *       and from which the loaded media can be read. MediaSources are created from {@link MediaItem
+ *       MediaItems} by the {@link MediaSourceFactory} injected in the {@link
+ *       Builder#setMediaSourceFactory Builder}, or can be added directly by methods like {@link
+ *       #setMediaSource(MediaSource)}. The library provides a {@link DefaultMediaSourceFactory} for
+ *       progressive media files, DASH, SmoothStreaming and HLS, including functionality for
+ *       side-loading subtitle files and clipping media.
  *   <li><b>{@link Renderer}</b>s that render individual components of the media. The library
  *       provides default implementations for common media types ({@link MediaCodecVideoRenderer},
  *       {@link MediaCodecAudioRenderer}, {@link TextRenderer} and {@link MetadataRenderer}). A

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

@@ -32,9 +32,15 @@ import java.util.Map;
 /**
  * Loops a {@link MediaSource} a specified number of times.
  *
- * <p>Note: To loop a {@link MediaSource} indefinitely, it is usually better to use {@link
- * ExoPlayer#setRepeatMode(int)} instead of this class.
+ * @deprecated To loop a {@link MediaSource} indefinitely, use {@link Player#setRepeatMode(int)}
+ *     instead of this class. To add a {@link MediaSource} a specific number of times to the
+ *     playlist, use {@link ExoPlayer#addMediaSource} in a loop with the same {@link MediaSource}.
+ *     To combine repeated {@link MediaSource} instances into one {@link MediaSource}, for example
+ *     to further wrap it in another {@link MediaSource}, use {@link ConcatenatingMediaSource} with
+ *     the same {@link MediaSource} {@link ConcatenatingMediaSource#addMediaSource added} multiple
+ *     times.
  */
+@Deprecated
 public final class LoopingMediaSource extends CompositeMediaSource<Void> {
 
   private final MaskingMediaSource maskingMediaSource;

library/core/src/test/java/com/google/android/exoplayer2/ExoPlayerTest.java

@@ -88,7 +88,6 @@ import com.google.android.exoplayer2.robolectric.TestPlayerRunHelper;
 import com.google.android.exoplayer2.source.ClippingMediaSource;
 import com.google.android.exoplayer2.source.CompositeMediaSource;
 import com.google.android.exoplayer2.source.ConcatenatingMediaSource;
-import com.google.android.exoplayer2.source.LoopingMediaSource;
 import com.google.android.exoplayer2.source.MaskingMediaSource;
 import com.google.android.exoplayer2.source.MediaPeriod;
 import com.google.android.exoplayer2.source.MediaSource;
@@ -3643,7 +3642,6 @@ public final class ExoPlayerTest {
   public void seekTo_windowIndexIsReset_deprecated() throws Exception {
     FakeTimeline fakeTimeline = new FakeTimeline();
     FakeMediaSource mediaSource = new FakeMediaSource(fakeTimeline);
-    LoopingMediaSource loopingMediaSource = new LoopingMediaSource(mediaSource, 2);
     final int[] windowIndex = {C.INDEX_UNSET};
     final long[] positionMs = {C.TIME_UNSET, C.TIME_UNSET, C.TIME_UNSET};
     final long[] bufferedPositions = {C.TIME_UNSET, C.TIME_UNSET, C.TIME_UNSET};
@@ -3677,7 +3675,7 @@ public final class ExoPlayerTest {
                 })
             .build();
     new ExoPlayerTestRunner.Builder(context)
-        .setMediaSources(loopingMediaSource)
+        .setMediaSources(mediaSource, mediaSource)
         .setActionSchedule(actionSchedule)
         .build()
         .start()
@@ -3697,7 +3695,6 @@ public final class ExoPlayerTest {
   public void seekTo_windowIndexIsReset() throws Exception {
     FakeTimeline fakeTimeline = new FakeTimeline();
     FakeMediaSource mediaSource = new FakeMediaSource(fakeTimeline);
-    LoopingMediaSource loopingMediaSource = new LoopingMediaSource(mediaSource, 2);
     final int[] windowIndex = {C.INDEX_UNSET};
     final long[] positionMs = {C.TIME_UNSET, C.TIME_UNSET, C.TIME_UNSET};
     final long[] bufferedPositions = {C.TIME_UNSET, C.TIME_UNSET, C.TIME_UNSET};
@@ -3731,7 +3728,7 @@ public final class ExoPlayerTest {
                 })
             .build();
     new ExoPlayerTestRunner.Builder(context)
-        .setMediaSources(loopingMediaSource)
+        .setMediaSources(mediaSource, mediaSource)
         .setActionSchedule(actionSchedule)
         .build()
         .start()

library/core/src/test/java/com/google/android/exoplayer2/source/LoopingMediaSourceTest.java

@@ -30,6 +30,7 @@ import org.junit.Test;
 import org.junit.runner.RunWith;
 
 /** Unit tests for {@link LoopingMediaSource}. */
+@SuppressWarnings("deprecation") // Testing deprecated class.
 @RunWith(AndroidJUnit4.class)
 public class LoopingMediaSourceTest {