Fix init data loading for non-reused extractors

PiperOrigin-RevId: 317322247

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/BundledHlsMediaChunkExtractor.java

@@ -27,6 +27,7 @@ import com.google.android.exoplayer2.extractor.ts.Ac3Extractor;
 import com.google.android.exoplayer2.extractor.ts.Ac4Extractor;
 import com.google.android.exoplayer2.extractor.ts.AdtsExtractor;
 import com.google.android.exoplayer2.extractor.ts.TsExtractor;
+import com.google.android.exoplayer2.util.Assertions;
 import com.google.android.exoplayer2.util.TimestampAdjuster;
 import java.io.IOException;
 
@@ -75,11 +76,13 @@ public final class BundledHlsMediaChunkExtractor implements HlsMediaChunkExtract
   }
 
   @Override
-  public HlsMediaChunkExtractor reuseOrRecreate() {
-    if (extractor instanceof TsExtractor || extractor instanceof FragmentedMp4Extractor) {
-      // We can reuse this instance.
-      return this;
-    }
+  public boolean isReusable() {
+    return extractor instanceof TsExtractor || extractor instanceof FragmentedMp4Extractor;
+  }
+
+  @Override
+  public HlsMediaChunkExtractor recreate() {
+    Assertions.checkState(!isReusable());
     Extractor newExtractorInstance;
     if (extractor instanceof WebvttExtractor) {
       newExtractorInstance = new WebvttExtractor(masterPlaylistFormat.language, timestampAdjuster);
@@ -93,7 +96,7 @@ public final class BundledHlsMediaChunkExtractor implements HlsMediaChunkExtract
       newExtractorInstance = new Mp3Extractor();
     } else {
       throw new IllegalStateException(
-          "Unexpected previousExtractor type: " + extractor.getClass().getSimpleName());
+          "Unexpected extractor type for recreation: " + extractor.getClass().getSimpleName());
     }
     return new BundledHlsMediaChunkExtractor(
         newExtractorInstance, masterPlaylistFormat, timestampAdjuster);

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsMediaChunk.java

@@ -134,10 +134,12 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
     boolean shouldSpliceIn;
     ImmutableMap<SampleQueue, Integer> sampleQueueDiscardFromIndices = ImmutableMap.of();
     if (previousChunk != null) {
+      boolean isFollowingChunk =
+          playlistUrl.equals(previousChunk.playlistUrl) && previousChunk.loadCompleted;
       id3Decoder = previousChunk.id3Decoder;
       scratchId3Data = previousChunk.scratchId3Data;
       boolean canContinueWithoutSplice =
-          (playlistUrl.equals(previousChunk.playlistUrl) && previousChunk.loadCompleted)
+          isFollowingChunk
               || (mediaPlaylist.hasIndependentSegments
                   && segmentStartTimeInPeriodUs >= previousChunk.endTimeUs);
       shouldSpliceIn = !canContinueWithoutSplice;
@@ -145,8 +147,8 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
         sampleQueueDiscardFromIndices = previousChunk.sampleQueueDiscardFromIndices;
       }
       previousExtractor =
-          previousChunk.discontinuitySequenceNumber == discontinuitySequenceNumber
-                  && !shouldSpliceIn
+          isFollowingChunk
+                  && previousChunk.discontinuitySequenceNumber == discontinuitySequenceNumber
               ? previousChunk.extractor
               : null;
     } else {
@@ -334,9 +336,9 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
   public void load() throws IOException {
     // output == null means init() hasn't been called.
     Assertions.checkNotNull(output);
-    if (extractor == null && previousExtractor != null) {
-      extractor = previousExtractor.reuseOrRecreate();
-      initDataLoadRequired = extractor != previousExtractor;
+    if (extractor == null && previousExtractor != null && previousExtractor.isReusable()) {
+      extractor = previousExtractor;
+      initDataLoadRequired = false;
     }
     maybeLoadInitData();
     if (!loadCanceled) {
@@ -426,13 +428,15 @@ import org.checkerframework.checker.nullness.qual.RequiresNonNull;
       extractorInput.resetPeekPosition();
 
       extractor =
-          extractorFactory.createExtractor(
-              dataSpec.uri,
-              trackFormat,
-              muxedCaptionFormats,
-              timestampAdjuster,
-              dataSource.getResponseHeaders(),
-              extractorInput);
+          previousExtractor != null
+              ? previousExtractor.recreate()
+              : extractorFactory.createExtractor(
+                  dataSpec.uri,
+                  trackFormat,
+                  muxedCaptionFormats,
+                  timestampAdjuster,
+                  dataSource.getResponseHeaders(),
+                  extractorInput);
       if (extractor.isPackedAudioExtractor()) {
         output.setSampleOffsetUs(
             id3Timestamp != C.TIME_UNSET

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsMediaChunkExtractor.java

@@ -51,9 +51,12 @@ public interface HlsMediaChunkExtractor {
   /** Returns whether this is a packed audio extractor, as defined in RFC 8216, Section 3.4. */
   boolean isPackedAudioExtractor();
 
+  /** Returns whether this instance can be used for extracting multiple continuous segments. */
+  boolean isReusable();
+
   /**
-   * If this instance can be used for extracting multiple continuous segments, returns itself.
-   * Otherwise, returns a new instance for extracting the same type of media.
+   * Returns a new instance for extracting the same type of media as this one. Can only be called on
+   * instances that are not {@link #isReusable() reusable}.
    */
-  HlsMediaChunkExtractor reuseOrRecreate();
+  HlsMediaChunkExtractor recreate();
 }