MP3: Use bytes field from VBRI frame instead of deriving from ToC

The previous code assumed that the `VBRI` Table of Contents (ToC)
covers all the MP3 data in the file. In a file with an invalid VBRI ToC
where this isn't the case, this results in playback silently stopping
mid-playback (and either advancing to the next item, or continuing to
count up the playback clock forever). This change considers the `bytes`
field to determine the end of the MP3 data, in addition to deriving it
from the ToC. If they disagree we log a warning and take the max value.
This is because we handle accidentally reading non-MP3 data at the end
(or hitting EoF) better than stopping reading valid MP3 data partway
through.

Issue: #1904

#cherrypick

PiperOrigin-RevId: 700319250
(cherry picked from commit 46578ee)

Author: icbaker

RELEASENOTES.md

@@ -26,6 +26,9 @@
     *   Add support for transmuxing into alternative backwards compatible
         formats.
 *   Extractors:
+    *   MP3: Don't stop playback early when a `VBRI` frame's table of contents
+        doesn't cover all the MP3 data in a file
+        ([#1904](https://github.com/androidx/media/issues/1904)).
 *   DataSource:
 *   Audio:
     *   Do not bypass `SonicAudioProcessor` when `SpeedChangingAudioProcessor`

libraries/exoplayer/src/test/java/androidx/media3/exoplayer/e2etest/Mp3PlaybackTest.java

@@ -44,6 +44,7 @@ public static ImmutableList<String> mediaSamples() {
         "bear-id3.mp3",
         "bear-id3-numeric-genre.mp3",
         "bear-vbr-no-seek-table.mp3",
+        "bear-vbr-vbri-header-truncated-toc.mp3",
         "bear-vbr-xing-header.mp3",
         "play-trimmed.mp3",
         "test-cbr-info-header.mp3");

libraries/extractor/src/main/java/androidx/media3/extractor/mp3/VbriSeeker.java

@@ -15,6 +15,8 @@
  */
 package androidx.media3.extractor.mp3;
 
+import static java.lang.Math.max;
+
 import androidx.annotation.Nullable;
 import androidx.media3.common.C;
 import androidx.media3.common.util.Log;
@@ -47,7 +49,9 @@ public static VbriSeeker create(
       long position,
       MpegAudioUtil.Header mpegAudioHeader,
       ParsableByteArray frame) {
-    frame.skipBytes(10);
+    frame.skipBytes(6);
+    int bytes = frame.readInt();
+    long endOfMp3Data = position + mpegAudioHeader.frameSize + bytes;
     int numFrames = frame.readInt();
     if (numFrames <= 0) {
       return null;
@@ -87,11 +91,21 @@ public static VbriSeeker create(
       }
       position += segmentSize * ((long) scale);
     }
-    if (inputLength != C.LENGTH_UNSET && inputLength != position) {
-      Log.w(TAG, "VBRI data size mismatch: " + inputLength + ", " + position);
+    if (inputLength != C.LENGTH_UNSET && inputLength != endOfMp3Data) {
+      Log.w(TAG, "VBRI data size mismatch: " + inputLength + ", " + endOfMp3Data);
+    }
+    if (endOfMp3Data != position) {
+      Log.w(
+          TAG,
+          "VBRI bytes and ToC mismatch (using max): "
+              + endOfMp3Data
+              + ", "
+              + position
+              + "\nSeeking will be inaccurate.");
+      endOfMp3Data = max(endOfMp3Data, position);
     }
-    return new VbriSeeker(
-        timesUs, positions, durationUs, /* dataEndPosition= */ position, mpegAudioHeader.bitrate);
+
+    return new VbriSeeker(timesUs, positions, durationUs, endOfMp3Data, mpegAudioHeader.bitrate);
   }
 
   private final long[] timesUs;

libraries/extractor/src/test/java/androidx/media3/extractor/mp3/Mp3ExtractorTest.java

@@ -77,6 +77,13 @@ public void mp3SampleWithVbriHeader() throws Exception {
         Mp3Extractor::new, "media/mp3/bear-vbr-vbri-header.mp3", simulationConfig);
   }
 
+  // https://github.com/androidx/media/issues/1904
+  @Test
+  public void mp3SampleWithVbriHeaderWithTruncatedToC() throws Exception {
+    ExtractorAsserts.assertBehavior(
+        Mp3Extractor::new, "media/mp3/bear-vbr-vbri-header-truncated-toc.mp3", simulationConfig);
+  }
+
   @Test
   public void mp3SampleWithCbrSeeker() throws Exception {
     ExtractorAsserts.assertBehavior(