Add possibility to update ExtractorOutput duration

PiperOrigin-RevId: 292912511

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

@@ -653,8 +653,7 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 
   @Override
   public void seekMap(SeekMap seekMap) {
-    this.seekMap = icyHeaders == null ? seekMap : new Unseekable(/* durationUs */ C.TIME_UNSET);
-    handler.post(maybeFinishPrepareRunnable);
+    handler.post(() -> setSeekMap(seekMap));
   }
 
   // Icy metadata. Called by the loading thread.
@@ -691,6 +690,20 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     return trackOutput;
   }
 
+  private void setSeekMap(SeekMap seekMap) {
+    this.seekMap = icyHeaders == null ? seekMap : new Unseekable(/* durationUs */ C.TIME_UNSET);
+    if (preparedState == null) {
+      maybeFinishPrepare();
+    } else {
+      preparedState =
+          new PreparedState(seekMap, preparedState.tracks, preparedState.trackIsAudioVideoFlags);
+    }
+    durationUs = seekMap.getDurationUs();
+    isLive = length == C.LENGTH_UNSET && seekMap.getDurationUs() == C.TIME_UNSET;
+    dataType = isLive ? C.DATA_TYPE_MEDIA_PROGRESSIVE_LIVE : C.DATA_TYPE_MEDIA;
+    listener.onSourceInfoRefreshed(durationUs, seekMap.isSeekable(), isLive);
+  }
+
   private void maybeFinishPrepare() {
     SeekMap seekMap = this.seekMap;
     if (released || preparedState != null || !sampleQueuesBuilt || seekMap == null) {
@@ -705,7 +718,6 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
     int trackCount = sampleQueues.length;
     TrackGroup[] trackArray = new TrackGroup[trackCount];
     boolean[] trackIsAudioVideoFlags = new boolean[trackCount];
-    durationUs = seekMap.getDurationUs();
     for (int i = 0; i < trackCount; i++) {
       Format trackFormat = sampleQueues[i].getUpstreamFormat();
       String mimeType = trackFormat.sampleMimeType;
@@ -731,11 +743,8 @@ import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
       }
       trackArray[i] = new TrackGroup(trackFormat);
     }
-    isLive = length == C.LENGTH_UNSET && seekMap.getDurationUs() == C.TIME_UNSET;
-    dataType = isLive ? C.DATA_TYPE_MEDIA_PROGRESSIVE_LIVE : C.DATA_TYPE_MEDIA;
     preparedState =
         new PreparedState(seekMap, new TrackGroupArray(trackArray), trackIsAudioVideoFlags);
-    listener.onSourceInfoRefreshed(durationUs, seekMap.isSeekable(), isLive);
     Assertions.checkNotNull(callback).onPrepared(this);
   }
 

library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/IndexSeeker.java

@@ -27,11 +27,12 @@ import com.google.android.exoplayer2.util.Util;
   @VisibleForTesting
   /* package */ static final long MIN_TIME_BETWEEN_POINTS_US = C.MICROS_PER_SECOND / 10;
 
-  private final long durationUs;
   private final long dataEndPosition;
   private final LongArray timesUs;
   private final LongArray positions;
 
+  private long durationUs;
+
   public IndexSeeker(long durationUs, long dataStartPosition, long dataEndPosition) {
     this.durationUs = durationUs;
     this.dataEndPosition = dataEndPosition;
@@ -104,4 +105,8 @@ import com.google.android.exoplayer2.util.Util;
     long lastIndexedTimeUs = timesUs.get(timesUs.size() - 1);
     return timeUs - lastIndexedTimeUs < MIN_TIME_BETWEEN_POINTS_US;
   }
+
+  /* package */ void setDurationUs(long durationUs) {
+    this.durationUs = durationUs;
+  }
 }

library/extractor/src/main/java/com/google/android/exoplayer2/extractor/mp3/Mp3Extractor.java

@@ -216,6 +216,31 @@ public final class Mp3Extractor implements Extractor {
   public int read(ExtractorInput input, PositionHolder seekPosition)
       throws IOException, InterruptedException {
     assertInitialized();
+    int readResult = readInternal(input);
+    if (readResult == RESULT_END_OF_INPUT && seeker instanceof IndexSeeker) {
+      // Duration is exact when index seeker is used.
+      long durationUs = computeTimeUs(samplesRead);
+      if (seeker.getDurationUs() != durationUs) {
+        ((IndexSeeker) seeker).setDurationUs(durationUs);
+        extractorOutput.seekMap(seeker);
+      }
+    }
+    return readResult;
+  }
+
+  /**
+   * Disables the extractor from being able to seek through the media.
+   *
+   * <p>Please note that this needs to be called before {@link #read}.
+   */
+  public void disableSeeking() {
+    disableSeeking = true;
+  }
+
+  // Internal methods.
+
+  @RequiresNonNull({"extractorOutput", "currentTrackOutput", "realTrackOutput"})
+  private int readInternal(ExtractorInput input) throws IOException, InterruptedException {
     if (synchronizedHeaderData == 0) {
       try {
         synchronize(input, false);
@@ -254,17 +279,6 @@ public final class Mp3Extractor implements Extractor {
     return readSample(input);
   }
 
-  /**
-   * Disables the extractor from being able to seek through the media.
-   *
-   * <p>Please note that this needs to be called before {@link #read}.
-   */
-  public void disableSeeking() {
-    disableSeeking = true;
-  }
-
-  // Internal methods.
-
   @RequiresNonNull({"currentTrackOutput", "realTrackOutput", "seeker"})
   private int readSample(ExtractorInput extractorInput) throws IOException, InterruptedException {
     if (sampleBytesRemaining == 0) {

library/extractor/src/test/assets/mp3/bear-vbr-no-seek-table.mp3.0.dump

 seekMap:
   isSeekable = true
-  duration = UNSET TIME
+  duration = 2808000
   getPosition(0) = [[timeUs=0, position=224]]
 numberOfTracks = 1
 track 0:

library/extractor/src/test/assets/mp3/bear-vbr-no-seek-table.mp3.1.dump

 seekMap:
   isSeekable = true
-  duration = UNSET TIME
+  duration = 2808000
   getPosition(0) = [[timeUs=0, position=224]]
 numberOfTracks = 1
 track 0:

library/extractor/src/test/assets/mp3/bear-vbr-no-seek-table.mp3.2.dump

 seekMap:
   isSeekable = true
-  duration = UNSET TIME
+  duration = 2808000
   getPosition(0) = [[timeUs=0, position=224]]
 numberOfTracks = 1
 track 0:

library/extractor/src/test/assets/mp3/bear-vbr-no-seek-table.mp3.3.dump

 seekMap:
   isSeekable = true
-  duration = UNSET TIME
+  duration = 2808000
   getPosition(0) = [[timeUs=0, position=224]]
 numberOfTracks = 1
 track 0: