Restore equivalence

README.md

@@ -38,8 +38,8 @@ repositories {
 }
 ```
 
-Next add a gradle compile dependency to the `build.gradle` file of your app
-module. The following will add a dependency to the full library:
+Next add a dependency in the `build.gradle` file of your app module. The
+following will add a dependency to the full library:
 
 ```gradle
 implementation 'com.google.android.exoplayer:exoplayer:2.X.X'

library/core/src/main/java/com/google/android/exoplayer2/extractor/mkv/MatroskaExtractor.java

@@ -1929,12 +1929,12 @@ public final class MatroskaExtractor implements Extractor {
 
     /**
      * Builds initialization data for a {@link Format} from FourCC codec private data.
-     * <p>
-     * VC1 and H263 are the only supported compression types.
      *
-     * @return A pair object with the first object being the codec mime type
-     * and the second object the initialization data for the {@link Format},
-     * or null if the compression type is not a currently supported type (VC1 or H263).
+     * <p>VC1 and H263 are the only supported compression types.
+     *
+     * @return The codec mime type and initialization data. If the compression type is not supported
+     *     then the mime type is set to {@link MimeTypes#VIDEO_UNKNOWN} and the initialization data
+     *     is {@code null}.
      * @throws ParserException If the initialization data could not be built.
      */
     private static Pair<String, List<byte[]>> parseFourCcPrivate(ParsableByteArray buffer)
@@ -1944,14 +1944,16 @@ public final class MatroskaExtractor implements Extractor {
         long compression = buffer.readLittleEndianUnsignedInt();
         if (compression == FOURCC_COMPRESSION_DIVX) {
           return new Pair<>(MimeTypes.VIDEO_H263, null);
-        } else if (compression == FOURCC_COMPRESSION_VC1)  {
+        } else if (compression == FOURCC_COMPRESSION_VC1) {
           // Search for the initialization data from the end of the BITMAPINFOHEADER. The last 20
           // bytes of which are: sizeImage(4), xPel/m (4), yPel/m (4), clrUsed(4), clrImportant(4).
           int startOffset = buffer.getPosition() + 20;
           byte[] bufferData = buffer.data;
           for (int offset = startOffset; offset < bufferData.length - 4; offset++) {
-            if (bufferData[offset] == 0x00 && bufferData[offset + 1] == 0x00
-             && bufferData[offset + 2] == 0x01 && bufferData[offset + 3] == 0x0F) {
+            if (bufferData[offset] == 0x00
+                && bufferData[offset + 1] == 0x00
+                && bufferData[offset + 2] == 0x01
+                && bufferData[offset + 3] == 0x0F) {
               // We've found the initialization data.
               byte[] initializationData = Arrays.copyOfRange(bufferData, offset, bufferData.length);
               return new Pair<>(MimeTypes.VIDEO_VC1, Collections.singletonList(initializationData));

library/core/src/main/java/com/google/android/exoplayer2/offline/DownloadService.java

@@ -289,6 +289,7 @@ public abstract class DownloadService extends Service implements DownloadManager
   @Override
   public void onIdle(DownloadManager downloadManager) {
     // Make sure startForeground is called before stopping.
+    // Workaround for https://buganizer.corp.google.com/issues/69424260
     if (Util.SDK_INT >= 26) {
       Builder notificationBuilder = new Builder(this, getNotificationChannelId());
       Notification foregroundNotification = notificationBuilder.build();

library/core/src/main/java/com/google/android/exoplayer2/upstream/DefaultHttpDataSource.java

@@ -614,8 +614,8 @@ public class DefaultHttpDataSource implements HttpDataSource {
       }
       String className = inputStream.getClass().getName();
       if ("com.android.okhttp.internal.http.HttpTransport$ChunkedInputStream".equals(className)
-          || "com.android.okhttp.internal.http.HttpTransport$FixedLengthInputStream".equals(
-          className)) {
+          || "com.android.okhttp.internal.http.HttpTransport$FixedLengthInputStream"
+              .equals(className)) {
         Class<?> superclass = inputStream.getClass().getSuperclass();
         Method unexpectedEndOfInput = superclass.getDeclaredMethod("unexpectedEndOfInput");
         unexpectedEndOfInput.setAccessible(true);