Use lambdas where possible

PiperOrigin-RevId: 320960833

extensions/media2/src/androidTest/java/com/google/android/exoplayer2/ext/media2/SessionPlayerConnectorTest.java

@@ -1146,17 +1146,16 @@ public class SessionPlayerConnectorTest {
     assertPlayerResultSuccess(sessionPlayerConnector.prepare());
     InstrumentationRegistry.getInstrumentation()
         .runOnMainSync(
-            () -> {
-              simpleExoPlayer.addListener(
-                  new Player.EventListener() {
-                    @Override
-                    public void onPlayWhenReadyChanged(boolean playWhenReady, int reason) {
-                      if (playWhenReady) {
-                        simpleExoPlayer.setPlayWhenReady(false);
+            () ->
+                simpleExoPlayer.addListener(
+                    new Player.EventListener() {
+                      @Override
+                      public void onPlayWhenReadyChanged(boolean playWhenReady, int reason) {
+                        if (playWhenReady) {
+                          simpleExoPlayer.setPlayWhenReady(false);
+                        }
                       }
-                    }
-                  });
-            });
+                    }));
 
     assertPlayerResultSuccess(sessionPlayerConnector.play());
     assertThat(

extensions/media2/src/main/java/com/google/android/exoplayer2/ext/media2/SessionPlayerConnector.java

@@ -149,19 +149,19 @@ public final class SessionPlayerConnector extends SessionPlayer {
   @Override
   public ListenableFuture<PlayerResult> play() {
     return playerCommandQueue.addCommand(
-        PlayerCommandQueue.COMMAND_CODE_PLAYER_PLAY, /* command= */ () -> player.play());
+        PlayerCommandQueue.COMMAND_CODE_PLAYER_PLAY, /* command= */ player::play);
   }
 
   @Override
   public ListenableFuture<PlayerResult> pause() {
     return playerCommandQueue.addCommand(
-        PlayerCommandQueue.COMMAND_CODE_PLAYER_PAUSE, /* command= */ () -> player.pause());
+        PlayerCommandQueue.COMMAND_CODE_PLAYER_PAUSE, /* command= */ player::pause);
   }
 
   @Override
   public ListenableFuture<PlayerResult> prepare() {
     return playerCommandQueue.addCommand(
-        PlayerCommandQueue.COMMAND_CODE_PLAYER_PREPARE, /* command= */ () -> player.prepare());
+        PlayerCommandQueue.COMMAND_CODE_PLAYER_PREPARE, /* command= */ player::prepare);
   }
 
   @Override

library/core/src/main/java/com/google/android/exoplayer2/drm/DefaultDrmSessionManager.java

@@ -771,9 +771,7 @@ public class DefaultDrmSessionManager implements DrmSessionManager {
         keepaliveSessions.add(session);
         Assertions.checkNotNull(sessionReleasingHandler)
             .postAtTime(
-                () -> {
-                  session.release(/* eventDispatcher= */ null);
-                },
+                () -> session.release(/* eventDispatcher= */ null),
                 session,
                 /* uptimeMillis= */ SystemClock.uptimeMillis() + sessionKeepaliveMs);
       } else if (newReferenceCount == 0) {

library/core/src/main/java/com/google/android/exoplayer2/drm/FrameworkMediaDrm.java

@@ -156,9 +156,8 @@ public final class FrameworkMediaDrm implements ExoMediaDrm {
     mediaDrm.setOnExpirationUpdateListener(
         listener == null
             ? null
-            : (mediaDrm, sessionId, expirationTimeMs) -> {
-              listener.onExpirationUpdate(FrameworkMediaDrm.this, sessionId, expirationTimeMs);
-            },
+            : (mediaDrm, sessionId, expirationTimeMs) ->
+                listener.onExpirationUpdate(FrameworkMediaDrm.this, sessionId, expirationTimeMs),
         /* handler= */ null);
   }
 

library/core/src/test/java/com/google/android/exoplayer2/ExoPlayerTest.java

@@ -1913,9 +1913,7 @@ public final class ExoPlayerTest {
             .waitForTimelineChanged()
             .pause()
             .sendMessage(
-                (messageType, payload) -> {
-                  counter.getAndIncrement();
-                },
+                (messageType, payload) -> counter.getAndIncrement(),
                 /* windowIndex= */ 0,
                 /* positionMs= */ 2000,
                 /* deleteAfterDelivery= */ false)

library/core/src/test/java/com/google/android/exoplayer2/audio/MediaCodecAudioRendererTest.java

@@ -40,7 +40,6 @@ import com.google.android.exoplayer2.testutil.FakeSampleStream;
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.common.collect.ImmutableList;
 import java.util.Collections;
-import java.util.List;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -78,11 +77,8 @@ public class MediaCodecAudioRendererTest {
     when(audioSink.handleBuffer(any(), anyLong(), anyInt())).thenReturn(true);
 
     mediaCodecSelector =
-        new MediaCodecSelector() {
-          @Override
-          public List<MediaCodecInfo> getDecoderInfos(
-              String mimeType, boolean requiresSecureDecoder, boolean requiresTunnelingDecoder) {
-            return Collections.singletonList(
+        (mimeType, requiresSecureDecoder, requiresTunnelingDecoder) ->
+            Collections.singletonList(
                 MediaCodecInfo.newInstance(
                     /* name= */ "name",
                     /* mimeType= */ mimeType,
@@ -93,8 +89,6 @@ public class MediaCodecAudioRendererTest {
                     /* vendor= */ false,
                     /* forceDisableAdaptive= */ false,
                     /* forceSecure= */ false));
-          }
-        };
 
     mediaCodecAudioRenderer =
         new MediaCodecAudioRenderer(

library/core/src/test/java/com/google/android/exoplayer2/offline/DownloadManagerTest.java

@@ -711,19 +711,13 @@ public class DownloadManagerTest {
 
   private List<Download> postGetCurrentDownloads() {
     AtomicReference<List<Download>> currentDownloadsReference = new AtomicReference<>();
-    runOnMainThread(
-        () -> {
-          currentDownloadsReference.set(downloadManager.getCurrentDownloads());
-        });
+    runOnMainThread(() -> currentDownloadsReference.set(downloadManager.getCurrentDownloads()));
     return currentDownloadsReference.get();
   }
 
   private DownloadIndex postGetDownloadIndex() {
     AtomicReference<DownloadIndex> downloadIndexReference = new AtomicReference<>();
-    runOnMainThread(
-        () -> {
-          downloadIndexReference.set(downloadManager.getDownloadIndex());
-        });
+    runOnMainThread(() -> downloadIndexReference.set(downloadManager.getDownloadIndex()));
     return downloadIndexReference.get();
   }
 

library/core/src/test/java/com/google/android/exoplayer2/video/MediaCodecVideoRendererTest.java

@@ -50,7 +50,6 @@ import com.google.android.exoplayer2.testutil.FakeSampleStream.FakeSampleStreamI
 import com.google.android.exoplayer2.util.MimeTypes;
 import com.google.common.collect.ImmutableList;
 import java.util.Collections;
-import java.util.List;
 import org.junit.Before;
 import org.junit.Rule;
 import org.junit.Test;
@@ -82,11 +81,8 @@ public class MediaCodecVideoRendererTest {
   @Before
   public void setUp() throws Exception {
     MediaCodecSelector mediaCodecSelector =
-        new MediaCodecSelector() {
-          @Override
-          public List<MediaCodecInfo> getDecoderInfos(
-              String mimeType, boolean requiresSecureDecoder, boolean requiresTunnelingDecoder) {
-            return Collections.singletonList(
+        (mimeType, requiresSecureDecoder, requiresTunnelingDecoder) ->
+            Collections.singletonList(
                 MediaCodecInfo.newInstance(
                     /* name= */ "name",
                     /* mimeType= */ mimeType,
@@ -97,8 +93,6 @@ public class MediaCodecVideoRendererTest {
                     /* vendor= */ false,
                     /* forceDisableAdaptive= */ false,
                     /* forceSecure= */ false));
-          }
-        };
 
     mediaCodecVideoRenderer =
         new MediaCodecVideoRenderer(