Add DefaultExtractorsFactory.setTsSubtitleFormats

ExoPlayer is unable to detect the presence of subtitle tracks in some
MPEG-TS files that don't fully declare them. It's possible for a
developer to provide the list instead, but doing so is quite awkward
without this helper method. This is consistent for how
`DefaultExtractorsFactory` allows other aspects of the delegate
`Extractor` implementations to be customised.

* Issue: google/ExoPlayer#10175
* Issue: google/ExoPlayer#10505

#minor-release

PiperOrigin-RevId: 490214619

libraries/extractor/src/main/java/androidx/media3/extractor/DefaultExtractorsFactory.java

@@ -22,6 +22,7 @@
 import androidx.annotation.GuardedBy;
 import androidx.annotation.Nullable;
 import androidx.media3.common.FileTypes;
+import androidx.media3.common.Format;
 import androidx.media3.common.PlaybackException;
 import androidx.media3.common.Player;
 import androidx.media3.common.util.TimestampAdjuster;
@@ -44,6 +45,7 @@
 import androidx.media3.extractor.ts.TsExtractor;
 import androidx.media3.extractor.ts.TsPayloadReader;
 import androidx.media3.extractor.wav.WavExtractor;
+import com.google.common.collect.ImmutableList;
 import com.google.errorprone.annotations.CanIgnoreReturnValue;
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
@@ -128,11 +130,13 @@ public final class DefaultExtractorsFactory implements ExtractorsFactory {
   private @Mp3Extractor.Flags int mp3Flags;
   private @TsExtractor.Mode int tsMode;
   private @DefaultTsPayloadReaderFactory.Flags int tsFlags;
+  private ImmutableList<Format> tsSubtitleFormats;
   private int tsTimestampSearchBytes;
 
   public DefaultExtractorsFactory() {
     tsMode = TsExtractor.MODE_SINGLE_PMT;
     tsTimestampSearchBytes = TsExtractor.DEFAULT_TIMESTAMP_SEARCH_BYTES;
+    tsSubtitleFormats = ImmutableList.of();
   }
 
   /**
@@ -303,6 +307,20 @@ public synchronized DefaultExtractorsFactory setTsExtractorFlags(
     return this;
   }
 
+  /**
+   * Sets a list of subtitle formats to pass to the {@link DefaultTsPayloadReaderFactory} used by
+   * {@link TsExtractor} instances created by the factory.
+   *
+   * @see DefaultTsPayloadReaderFactory#DefaultTsPayloadReaderFactory(int, List)
+   * @param subtitleFormats The subtitle formats.
+   * @return The factory, for convenience.
+   */
+  @CanIgnoreReturnValue
+  public synchronized DefaultExtractorsFactory setTsSubtitleFormats(List<Format> subtitleFormats) {
+    tsSubtitleFormats = ImmutableList.copyOf(subtitleFormats);
+    return this;
+  }
+
   /**
    * Sets the number of bytes searched to find a timestamp for {@link TsExtractor} instances created
    * by the factory.
@@ -416,7 +434,12 @@ private void addExtractorsForFileType(@FileTypes.Type int fileType, List<Extract
         extractors.add(new PsExtractor());
         break;
       case FileTypes.TS:
-        extractors.add(new TsExtractor(tsMode, tsFlags, tsTimestampSearchBytes));
+        extractors.add(
+            new TsExtractor(
+                tsMode,
+                new TimestampAdjuster(0),
+                new DefaultTsPayloadReaderFactory(tsFlags, tsSubtitleFormats),
+                tsTimestampSearchBytes));
         break;
       case FileTypes.WAV:
         extractors.add(new WavExtractor());