Apply Android studio code analysis suggestions.

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=120326293

demo/src/main/java/com/google/android/exoplayer/demo/PlayerActivity.java

@@ -16,7 +16,6 @@
 package com.google.android.exoplayer.demo;
 
 import com.google.android.exoplayer.AspectRatioFrameLayout;
-import com.google.android.exoplayer.DefaultTrackSelector;
 import com.google.android.exoplayer.DefaultTrackSelector.TrackInfo;
 import com.google.android.exoplayer.ExoPlaybackException;
 import com.google.android.exoplayer.ExoPlayer;
@@ -106,7 +105,6 @@ public class PlayerActivity extends Activity implements SurfaceHolder.Callback,
 
   private DataSourceFactory dataSourceFactory;
   private DemoPlayer player;
-  private DefaultTrackSelector trackSelector;
   private TrackSelectionHelper trackSelectionHelper;
   private DebugTextViewHelper debugViewHelper;
   private boolean playerNeedsSource;
@@ -137,11 +135,8 @@ public class PlayerActivity extends Activity implements SurfaceHolder.Callback,
     root.setOnKeyListener(new OnKeyListener() {
       @Override
       public boolean onKey(View v, int keyCode, KeyEvent event) {
-        if (keyCode == KeyEvent.KEYCODE_BACK || keyCode == KeyEvent.KEYCODE_ESCAPE
-            || keyCode == KeyEvent.KEYCODE_MENU) {
-          return false;
-        }
-        return mediaController.dispatchKeyEvent(event);
+        return keyCode != KeyEvent.KEYCODE_BACK && keyCode != KeyEvent.KEYCODE_ESCAPE
+            && keyCode != KeyEvent.KEYCODE_MENU && mediaController.dispatchKeyEvent(event);
       }
     });
 
@@ -287,8 +282,7 @@ public class PlayerActivity extends Activity implements SurfaceHolder.Callback,
       player.setCaptionListener(this);
       player.setMetadataListener(this);
       player.seekTo(playerPosition);
-      trackSelector = player.getTrackSelector();
-      trackSelectionHelper = new TrackSelectionHelper(trackSelector);
+      trackSelectionHelper = new TrackSelectionHelper(player.getTrackSelector());
       playerNeedsSource = true;
       mediaController.setMediaPlayer(player.getPlayerControl());
       mediaController.setEnabled(true);

demo/src/main/res/values/constants.xml

-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2014 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<resources xmlns:android="http://schemas.android.com/apk/res/android">
-
-  <!-- The minimum subtitle font size. -->
-  <dimen name="subtitle_minimum_font_size">13sp</dimen>
-
-</resources>

extensions/opus/src/main/java/com/google/android/exoplayer/ext/opus/OpusDecoder.java

@@ -108,9 +108,7 @@ import java.util.List;
       // Read the channel mapping.
       numStreams = headerBytes[19] & 0xFF;
       numCoupled = headerBytes[20] & 0xFF;
-      for (int i = 0; i < channelCount; i++) {
-        streamMap[i] = headerBytes[21 + i];
-      }
+      System.arraycopy(headerBytes, 21, streamMap, 0, channelCount);
     }
     if (initializationData.size() == 3) {
       if (initializationData.get(1).length != 8 || initializationData.get(2).length != 8) {

extensions/vp9/src/main/java/com/google/android/exoplayer/ext/vp9/LibvpxVideoTrackRenderer.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer.ext.vp9;
 
 import com.google.android.exoplayer.CodecCounters;
+import com.google.android.exoplayer.DecoderInputBuffer;
 import com.google.android.exoplayer.ExoPlaybackException;
 import com.google.android.exoplayer.ExoPlayer;
 import com.google.android.exoplayer.Format;
@@ -121,7 +122,7 @@ public final class LibvpxVideoTrackRenderer extends TrackRenderer {
 
   private Format format;
   private VpxDecoder decoder;
-  private VpxInputBuffer inputBuffer;
+  private DecoderInputBuffer inputBuffer;
   private VpxOutputBuffer outputBuffer;
   private VpxOutputBuffer nextOutputBuffer;
 
@@ -335,9 +336,6 @@ public final class LibvpxVideoTrackRenderer extends TrackRenderer {
     }
     if (inputBuffer.isEndOfStream()) {
       inputStreamEnded = true;
-    } else {
-      inputBuffer.width = format.width;
-      inputBuffer.height = format.height;
     }
     decoder.queueInputBuffer(inputBuffer);
     inputBuffer = null;

extensions/vp9/src/main/java/com/google/android/exoplayer/ext/vp9/VpxDecoder.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer.ext.vp9;
 
 import com.google.android.exoplayer.C;
+import com.google.android.exoplayer.DecoderInputBuffer;
 import com.google.android.exoplayer.util.extensions.SimpleDecoder;
 
 import java.nio.ByteBuffer;
@@ -24,7 +25,7 @@ import java.nio.ByteBuffer;
  * JNI wrapper for the libvpx VP9 decoder.
  */
 /* package */ final class VpxDecoder extends
-    SimpleDecoder<VpxInputBuffer, VpxOutputBuffer, VpxDecoderException> {
+    SimpleDecoder<DecoderInputBuffer, VpxOutputBuffer, VpxDecoderException> {
 
   public static final int OUTPUT_MODE_UNKNOWN = -1;
   public static final int OUTPUT_MODE_YUV = 0;
@@ -65,7 +66,7 @@ import java.nio.ByteBuffer;
    */
   public VpxDecoder(int numInputBuffers, int numOutputBuffers, int initialInputBufferSize)
       throws VpxDecoderException {
-    super(new VpxInputBuffer[numInputBuffers], new VpxOutputBuffer[numOutputBuffers]);
+    super(new DecoderInputBuffer[numInputBuffers], new VpxOutputBuffer[numOutputBuffers]);
     vpxDecContext = vpxInit();
     if (vpxDecContext == 0) {
       throw new VpxDecoderException("Failed to initialize decoder");
@@ -84,8 +85,8 @@ import java.nio.ByteBuffer;
   }
 
   @Override
-  protected VpxInputBuffer createInputBuffer() {
-    return new VpxInputBuffer();
+  protected DecoderInputBuffer createInputBuffer() {
+    return new DecoderInputBuffer(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT);
   }
 
   @Override
@@ -99,7 +100,7 @@ import java.nio.ByteBuffer;
   }
 
   @Override
-  protected VpxDecoderException decode(VpxInputBuffer inputBuffer, VpxOutputBuffer outputBuffer,
+  protected VpxDecoderException decode(DecoderInputBuffer inputBuffer, VpxOutputBuffer outputBuffer,
       boolean reset) {
     outputBuffer.timestampUs = inputBuffer.timeUs;
     inputBuffer.data.position(inputBuffer.data.position() - inputBuffer.size);

extensions/vp9/src/main/java/com/google/android/exoplayer/ext/vp9/VpxInputBuffer.java

-/*
- * Copyright (C) 2014 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-package com.google.android.exoplayer.ext.vp9;
-
-import com.google.android.exoplayer.DecoderInputBuffer;
-
-/**
- * Input buffer to a {@link VpxDecoder}.
- */
-/* package */ final class VpxInputBuffer extends DecoderInputBuffer {
-
-  public int width;
-  public int height;
-
-  public VpxInputBuffer() {
-    super(DecoderInputBuffer.BUFFER_REPLACEMENT_MODE_DIRECT);
-  }
-}

extensions/vp9/src/main/java/com/google/android/exoplayer/ext/vp9/VpxRenderer.java

@@ -78,7 +78,6 @@ import javax.microedition.khronos.opengles.GL10;
   private int program;
   private int texLocation;
   private int colorMatrixLocation;
-  private FloatBuffer textureCoords;
   private int previousWidth;
   private int previousStride;
 
@@ -171,7 +170,7 @@ import javax.microedition.khronos.opengles.GL10;
     // Set cropping of stride if either width or stride has changed.
     if (previousWidth != outputBuffer.width || previousStride != outputBuffer.yuvStrides[0]) {
       float crop = (float) outputBuffer.width / outputBuffer.yuvStrides[0];
-      textureCoords = nativeFloatBuffer(
+      FloatBuffer textureCoords = nativeFloatBuffer(
           0.0f, 0.0f,
           0.0f, 1.0f,
           crop, 0.0f,

library/build.gradle

+import com.android.builder.core.BuilderConstants
+
 // Copyright (C) 2014 The Android Open Source Project
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
@@ -48,7 +50,7 @@ dependencies {
 
 android.libraryVariants.all { variant ->
     def name = variant.buildType.name
-    if (name.equals(com.android.builder.core.BuilderConstants.DEBUG)) {
+    if (name.equals(BuilderConstants.DEBUG)) {
         return; // Skip debug builds.
     }
     def task = project.tasks.create "jar${name.capitalize()}", Jar

library/src/androidTest/java/com/google/android/exoplayer/CTest.java

@@ -26,7 +26,7 @@ import junit.framework.TestCase;
 public class CTest extends TestCase {
 
   @SuppressLint("InlinedApi")
-  public static final void testContants() {
+  public static void testConstants() {
     // Sanity check that constant values match those defined by the platform.
     assertEquals(MediaCodec.BUFFER_FLAG_KEY_FRAME, C.BUFFER_FLAG_KEY_FRAME);
     assertEquals(MediaCodec.BUFFER_FLAG_END_OF_STREAM, C.BUFFER_FLAG_END_OF_STREAM);

library/src/androidTest/java/com/google/android/exoplayer/extractor/ExtractorTest.java

@@ -24,7 +24,7 @@ import junit.framework.TestCase;
  */
 public class ExtractorTest extends TestCase {
 
-  public static final void testContants() {
+  public static void testContants() {
     // Sanity check that constant values match those defined by {@link C}.
     assertEquals(C.RESULT_END_OF_INPUT, Extractor.RESULT_END_OF_INPUT);
     // Sanity check that the other constant values don't overlap.

library/src/androidTest/java/com/google/android/exoplayer/extractor/mkv/MatroskaExtractorTest.java

@@ -794,15 +794,8 @@ public final class MatroskaExtractorTest extends InstrumentationTestCase {
     output.assertSample(index, expectedMedia, timeUs, flags, encryptionKey);
   }
 
-  private byte[] getVorbisCodecPrivate() {
-    byte[] codecPrivate = new byte[4207];
-    try {
-      getInstrumentation().getContext().getResources().getAssets().open(TEST_VORBIS_CODEC_PRIVATE)
-          .read(codecPrivate);
-    } catch (IOException e) {
-      fail(); // should never happen
-    }
-    return codecPrivate;
+  private byte[] getVorbisCodecPrivate() throws IOException {
+    return TestUtil.getByteArray(getInstrumentation(), TEST_VORBIS_CODEC_PRIVATE);
   }
 
   private static byte[] createFrameData(int size) {

library/src/androidTest/java/com/google/android/exoplayer/extractor/mkv/StreamBuilder.java

@@ -65,10 +65,11 @@ import java.util.List;
 
   private static final int NO_VALUE = -1;
 
+  private final List<EbmlElement> trackEntries;
+  private final List<EbmlElement> mediaSegments;
+
   private EbmlElement header;
   private EbmlElement info;
-  private List<EbmlElement> trackEntries;
-  private List<EbmlElement> mediaSegments;
 
   public StreamBuilder() {
     trackEntries = new LinkedList<>();
@@ -185,13 +186,13 @@ import java.util.List;
     Assertions.checkNotNull(header);
     Assertions.checkNotNull(info);
 
-    EbmlElement tracks = element(0x1654AE6B, trackEntries.toArray(new EbmlElement[0]));
+    EbmlElement tracks = element(0x1654AE6B,
+        trackEntries.toArray(new EbmlElement[trackEntries.size()]));
     EbmlElement[] children;
 
     if (cuePointCount == 0) {
       children = new EbmlElement[2 + mediaSegments.size()];
-      System.arraycopy(mediaSegments.toArray(new EbmlElement[0]), 0, children, 2,
-          mediaSegments.size());
+      System.arraycopy(mediaSegments.toArray(), 0, children, 2, mediaSegments.size());
       children[0] = info;
       children[1] = tracks;
     } else {
@@ -211,8 +212,7 @@ import java.util.List;
 
       // Build the top-level segment element.
       children = new EbmlElement[3 + mediaSegments.size()];
-      System.arraycopy(mediaSegments.toArray(new EbmlElement[0]), 0, children, 3,
-          mediaSegments.size());
+      System.arraycopy(mediaSegments.toArray(), 0, children, 3, mediaSegments.size());
       children[0] = info;
       children[1] = tracks;
       children[2] = cues;

library/src/androidTest/java/com/google/android/exoplayer/extractor/mp4/Mp4ExtractorTest.java

@@ -88,7 +88,7 @@ public final class Mp4ExtractorTest extends TestCase {
   /** Video frame timestamps in time units. */
   private static final int[] SAMPLE_TIMESTAMPS = {0, 2, 3, 5, 6, 7};
   /** Video frame sizes in bytes, including a very large sample. */
-  private static final int[] SAMPLE_SIZES = {100, 20, 20, 44, 100, 1 * 1024 * 1024};
+  private static final int[] SAMPLE_SIZES = {100, 20, 20, 44, 100, 1024 * 1024};
   /** Indices of key-frames. */
   private static final boolean[] SAMPLE_IS_SYNC = {true, false, false, false, true, true};
   /** Indices of video frame chunk offsets. */
@@ -260,8 +260,8 @@ public final class Mp4ExtractorTest extends TestCase {
 
   private static byte[] getStss() {
     int synchronizationSampleCount = 0;
-    for (int i = 0; i < SAMPLE_IS_SYNC.length; i++) {
-      if (SAMPLE_IS_SYNC[i]) {
+    for (boolean sampleIsSync : SAMPLE_IS_SYNC) {
+      if (sampleIsSync) {
         synchronizationSampleCount++;
       }
     }
@@ -364,7 +364,7 @@ public final class Mp4ExtractorTest extends TestCase {
     return CHUNK_OFFSETS[chunkIndex] + offsetInChunk;
   }
 
-  private static final byte[] getTestInputData(boolean includeStss, boolean mp4vFormat) {
+  private static byte[] getTestInputData(boolean includeStss, boolean mp4vFormat) {
     return includeStss ? getTestMp4File(mp4vFormat)
         : getTestMp4FileWithoutSynchronizationData(mp4vFormat);
   }

library/src/androidTest/java/com/google/android/exoplayer/extractor/ogg/OggUtilTest.java

@@ -32,7 +32,7 @@ import java.util.Random;
  */
 public final class OggUtilTest extends TestCase {
 
-  private Random random = new Random(0);
+  private final Random random = new Random(0);
 
   public void testReadBits() throws Exception {
     assertEquals(0, OggUtil.readBits((byte) 0x00, 2, 2));

library/src/androidTest/java/com/google/android/exoplayer/extractor/ogg/TestData.java

@@ -34,7 +34,7 @@ import com.google.android.exoplayer.testutil.TestUtil;
         0x4F, 0x67, 0x67, 0x53, // Oggs.
         0x00, // Stream revision.
         headerType,
-        (int) (granule >> 0) & 0xFF,
+        (int) (granule) & 0xFF,
         (int) (granule >> 8) & 0xFF,
         (int) (granule >> 16) & 0xFF,
         (int) (granule >> 24) & 0xFF,
@@ -46,7 +46,7 @@ import com.google.android.exoplayer.testutil.TestUtil;
         0x10,
         0x00,
         0x00, // MSB of data serial number.
-        (pageSequenceCounter >> 0) & 0xFF,
+        (pageSequenceCounter) & 0xFF,
         (pageSequenceCounter >> 8) & 0xFF,
         (pageSequenceCounter >> 16) & 0xFF,
         (pageSequenceCounter >> 24) & 0xFF,

library/src/androidTest/java/com/google/android/exoplayer/testutil/FakeDataSource.java

@@ -60,7 +60,7 @@ public final class FakeDataSource implements DataSource {
       totalLength += segment.length;
     }
     this.totalLength = totalLength;
-    openedDataSpecs = new ArrayList<DataSpec>();
+    openedDataSpecs = new ArrayList<>();
   }
 
   @Override

library/src/androidTest/java/com/google/android/exoplayer/text/webvtt/Mp4WebvttParserTest.java

@@ -105,7 +105,7 @@ public final class Mp4WebvttParserTest extends TestCase {
 
   public void testNoCueSample() throws IOException {
     Subtitle result = parser.decode(NO_CUE_SAMPLE, NO_CUE_SAMPLE.length);
-    assertMp4WebvttSubtitleEquals(result, new Cue[] {});
+    assertMp4WebvttSubtitleEquals(result, new Cue[0]);
   }
 
   // Negative tests.

library/src/androidTest/java/com/google/android/exoplayer/text/webvtt/WebvttSubtitleTest.java

@@ -20,6 +20,7 @@ import com.google.android.exoplayer.text.Cue;
 import junit.framework.TestCase;
 
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.List;
 
 /**
@@ -32,37 +33,38 @@ public class WebvttSubtitleTest extends TestCase {
   private static final String FIRST_AND_SECOND_SUBTITLE_STRING =
       FIRST_SUBTITLE_STRING + "\n" + SECOND_SUBTITLE_STRING;
 
-  private WebvttSubtitle emptySubtitle = new WebvttSubtitle(new ArrayList<WebvttCue>());
+  private static final WebvttSubtitle emptySubtitle = new WebvttSubtitle(
+      Collections.<WebvttCue>emptyList());
 
-  private ArrayList<WebvttCue> simpleSubtitleCues = new ArrayList<>();
-  {
+  private static final WebvttSubtitle simpleSubtitle;
+  static {
+    ArrayList<WebvttCue> simpleSubtitleCues = new ArrayList<>();
     WebvttCue firstCue = new WebvttCue(1000000, 2000000, FIRST_SUBTITLE_STRING);
     simpleSubtitleCues.add(firstCue);
-
     WebvttCue secondCue = new WebvttCue(3000000, 4000000, SECOND_SUBTITLE_STRING);
     simpleSubtitleCues.add(secondCue);
+    simpleSubtitle = new WebvttSubtitle(simpleSubtitleCues);
   }
-  private WebvttSubtitle simpleSubtitle = new WebvttSubtitle(simpleSubtitleCues);
 
-  private ArrayList<WebvttCue> overlappingSubtitleCues = new ArrayList<>();
-  {
+  private static final WebvttSubtitle overlappingSubtitle;
+  static {
+    ArrayList<WebvttCue> overlappingSubtitleCues = new ArrayList<>();
     WebvttCue firstCue = new WebvttCue(1000000, 3000000, FIRST_SUBTITLE_STRING);
     overlappingSubtitleCues.add(firstCue);
-
     WebvttCue secondCue = new WebvttCue(2000000, 4000000, SECOND_SUBTITLE_STRING);
     overlappingSubtitleCues.add(secondCue);
+    overlappingSubtitle = new WebvttSubtitle(overlappingSubtitleCues);
   }
-  private WebvttSubtitle overlappingSubtitle = new WebvttSubtitle(overlappingSubtitleCues);
 
-  private ArrayList<WebvttCue> nestedSubtitleCues = new ArrayList<>();
-  {
+  private static final WebvttSubtitle nestedSubtitle;
+  static {
+    ArrayList<WebvttCue> nestedSubtitleCues = new ArrayList<>();
     WebvttCue firstCue = new WebvttCue(1000000, 4000000, FIRST_SUBTITLE_STRING);
     nestedSubtitleCues.add(firstCue);
-
     WebvttCue secondCue = new WebvttCue(2000000, 3000000, SECOND_SUBTITLE_STRING);
     nestedSubtitleCues.add(secondCue);
+    nestedSubtitle = new WebvttSubtitle(nestedSubtitleCues);
   }
-  private WebvttSubtitle nestedSubtitle = new WebvttSubtitle(nestedSubtitleCues);
 
   public void testEventCount() {
     assertEquals(0, emptySubtitle.getEventTimeCount());
@@ -71,13 +73,6 @@ public class WebvttSubtitleTest extends TestCase {
     assertEquals(4, nestedSubtitle.getEventTimeCount());
   }
 
-  public void testLastEventTime() {
-    assertEquals(-1, emptySubtitle.getLastEventTime());
-    assertEquals(4000000, simpleSubtitle.getLastEventTime());
-    assertEquals(4000000, overlappingSubtitle.getLastEventTime());
-    assertEquals(4000000, nestedSubtitle.getLastEventTime());
-  }
-
   public void testSimpleSubtitleEventTimes() {
     testSubtitleEventTimesHelper(simpleSubtitle);
   }

library/src/main/java/com/google/android/exoplayer/BehindLiveWindowException.java

@@ -26,8 +26,4 @@ public final class BehindLiveWindowException extends IOException {
     super();
   }
 
-  public BehindLiveWindowException(String message) {
-    super(message);
-  }
-
 }

library/src/main/java/com/google/android/exoplayer/CodecCounters.java

@@ -46,17 +46,15 @@ public final class CodecCounters {
 
   public String getDebugString() {
     ensureUpdated();
-    StringBuilder builder = new StringBuilder();
-    builder.append("cic:").append(codecInitCount);
-    builder.append(" crc:").append(codecReleaseCount);
-    builder.append(" ibc:").append(inputBufferCount);
-    builder.append(" ofc:").append(outputFormatChangedCount);
-    builder.append(" obc:").append(outputBuffersChangedCount);
-    builder.append(" ren:").append(renderedOutputBufferCount);
-    builder.append(" sob:").append(skippedOutputBufferCount);
-    builder.append(" dob:").append(droppedOutputBufferCount);
-    builder.append(" mcdob:").append(maxConsecutiveDroppedOutputBufferCount);
-    return builder.toString();
+    return "cic:" + codecInitCount
+        + " crc:" + codecReleaseCount
+        + " ibc:" + inputBufferCount
+        + " ofc:" + outputFormatChangedCount
+        + " obc:" + outputBuffersChangedCount
+        + " ren:" + renderedOutputBufferCount
+        + " sob:" + skippedOutputBufferCount
+        + " dob:" + droppedOutputBufferCount
+        + " mcdob:" + maxConsecutiveDroppedOutputBufferCount;
   }
 
 }

library/src/main/java/com/google/android/exoplayer/DecoderInfo.java

@@ -148,11 +148,7 @@ public final class DecoderInfo {
   }
 
   private static boolean isAdaptive(CodecCapabilities capabilities) {
-    if (Util.SDK_INT >= 19) {
-      return isAdaptiveV19(capabilities);
-    } else {
-      return false;
-    }
+    return Util.SDK_INT >= 19 && isAdaptiveV19(capabilities);
   }
 
   @TargetApi(19)

library/src/main/java/com/google/android/exoplayer/ExoPlayerImplInternal.java

@@ -503,12 +503,9 @@ import java.util.concurrent.atomic.AtomicInteger;
         if (renderer.getState() == TrackRenderer.STATE_ENABLED) {
           renderer.disable();
         }
-      } catch (ExoPlaybackException e) {
+      } catch (ExoPlaybackException | RuntimeException e) {
         // There's nothing we can do.
         Log.e(TAG, "Stop failed.", e);
-      } catch (RuntimeException e) {
-        // Ditto.
-        Log.e(TAG, "Stop failed.", e);
       }
     }
     if (source != null) {

library/src/main/java/com/google/android/exoplayer/Format.java

@@ -403,24 +403,21 @@ public final class Format {
   }
 
   @TargetApi(16)
-  private static final void maybeSetStringV16(MediaFormat format, String key,
-      String value) {
+  private static void maybeSetStringV16(MediaFormat format, String key, String value) {
     if (value != null) {
       format.setString(key, value);
     }
   }
 
   @TargetApi(16)
-  private static final void maybeSetIntegerV16(MediaFormat format, String key,
-      int value) {
+  private static void maybeSetIntegerV16(MediaFormat format, String key, int value) {
     if (value != NO_VALUE) {
       format.setInteger(key, value);
     }
   }
 
   @TargetApi(16)
-  private static final void maybeSetFloatV16(MediaFormat format, String key,
-      float value) {
+  private static void maybeSetFloatV16(MediaFormat format, String key, float value) {
     if (value != NO_VALUE) {
       format.setFloat(key, value);
     }

library/src/main/java/com/google/android/exoplayer/FrameworkSampleSource.java

@@ -98,6 +98,7 @@ public final class FrameworkSampleSource implements SampleSource {
     fileDescriptor = null;
     fileDescriptorOffset = 0;
     fileDescriptorLength = 0;
+    durationUs = C.UNSET_TIME_US;
   }
 
   /**
@@ -117,6 +118,7 @@ public final class FrameworkSampleSource implements SampleSource {
     context = null;
     uri = null;
     headers = null;
+    durationUs = C.UNSET_TIME_US;
   }
 
   // SampleSource implementation.
@@ -132,7 +134,6 @@ public final class FrameworkSampleSource implements SampleSource {
     } else {
       extractor.setDataSource(fileDescriptor, fileDescriptorOffset, fileDescriptorLength);
     }
-    durationUs = C.UNSET_TIME_US;
     trackStates = new int[extractor.getTrackCount()];
     pendingResets = new boolean[trackStates.length];
     TrackGroup[] trackArray = new TrackGroup[trackStates.length];
@@ -150,7 +151,7 @@ public final class FrameworkSampleSource implements SampleSource {
 
   @Override
   public long getDurationUs() {
-    return C.UNSET_TIME_US;
+    return durationUs;
   }
 
   @Override

library/src/main/java/com/google/android/exoplayer/MediaCodecTrackRenderer.java

@@ -667,11 +667,8 @@ public abstract class MediaCodecTrackRenderer extends TrackRenderer {
     if (drmManagerState == DrmSessionManager.STATE_ERROR) {
       throw ExoPlaybackException.createForRenderer(drmSessionManager.getError(), getIndex());
     }
-    if (drmManagerState != DrmSessionManager.STATE_OPENED_WITH_KEYS &&
-        (bufferEncrypted || !playClearSamplesWithoutKeys)) {
-      return true;
-    }
-    return false;
+    return drmManagerState != DrmSessionManager.STATE_OPENED_WITH_KEYS
+        && (bufferEncrypted || !playClearSamplesWithoutKeys);
   }
 
   /**
@@ -840,10 +837,8 @@ public abstract class MediaCodecTrackRenderer extends TrackRenderer {
 
   /**
    * Processes a new output format.
-   *
-   * @throws ExoPlaybackException If an error occurs processing the output format.
    */
-  private void processOutputFormat() throws ExoPlaybackException {
+  private void processOutputFormat() {
     android.media.MediaFormat format = codec.getOutputFormat();
     if (codecNeedsMonoChannelCountWorkaround) {
       format.setInteger(android.media.MediaFormat.KEY_CHANNEL_COUNT, 1);
@@ -917,7 +912,7 @@ public abstract class MediaCodecTrackRenderer extends TrackRenderer {
   private int getDecodeOnlyIndex(long presentationTimeUs) {
     final int size = decodeOnlyPresentationTimestamps.size();
     for (int i = 0; i < size; i++) {
-      if (decodeOnlyPresentationTimestamps.get(i).longValue() == presentationTimeUs) {
+      if (decodeOnlyPresentationTimestamps.get(i) == presentationTimeUs) {
         return i;
       }
     }

library/src/main/java/com/google/android/exoplayer/MediaCodecUtil.java

@@ -126,8 +126,7 @@ public final class MediaCodecUtil {
       String codecName = info.getName();
       if (isCodecUsableDecoder(info, codecName, secureDecodersExplicit)) {
         String[] supportedTypes = info.getSupportedTypes();
-        for (int j = 0; j < supportedTypes.length; j++) {
-          String supportedType = supportedTypes[j];
+        for (String supportedType : supportedTypes) {
           if (supportedType.equalsIgnoreCase(mimeType)) {
             CodecCapabilities capabilities = info.getCapabilitiesForType(supportedType);
             boolean secure = mediaCodecList.isSecurePlaybackSupported(key.mimeType, capabilities);
@@ -291,25 +290,25 @@ public final class MediaCodecUtil {
     /**
      * The number of codecs in the list.
      */
-    public int getCodecCount();
+    int getCodecCount();
 
     /**
      * The info at the specified index in the list.
      *
      * @param index The index.
      */
-    public MediaCodecInfo getCodecInfoAt(int index);
+    MediaCodecInfo getCodecInfoAt(int index);
 
     /**
      * @return Returns whether secure decoders are explicitly listed, if present.
      */
-    public boolean secureDecodersExplicit();
+    boolean secureDecodersExplicit();
 
     /**
      * Whether secure playback is supported for the given {@link CodecCapabilities}, which should
      * have been obtained from a {@link MediaCodecInfo} obtained from this list.
      */
-    public boolean isSecurePlaybackSupported(String mimeType, CodecCapabilities capabilities);
+    boolean isSecurePlaybackSupported(String mimeType, CodecCapabilities capabilities);
 
   }
 

library/src/main/java/com/google/android/exoplayer/MultiSampleSource.java

@@ -192,10 +192,10 @@ public final class MultiSampleSource implements SampleSource {
 
   private Pair<SampleSource, Integer> getSourceAndGroup(int group) {
     int totalTrackGroupCount = 0;
-    for (int i = 0; i < sources.length; i++) {
-      int sourceTrackGroupCount = sources[i].getTrackGroups().length;
+    for (SampleSource source : sources) {
+      int sourceTrackGroupCount = source.getTrackGroups().length;
       if (group < totalTrackGroupCount + sourceTrackGroupCount) {
-        return Pair.create(sources[i], group - totalTrackGroupCount);
+        return Pair.create(source, group - totalTrackGroupCount);
       }
       totalTrackGroupCount += sourceTrackGroupCount;
     }

library/src/main/java/com/google/android/exoplayer/TrackRenderer.java

@@ -227,7 +227,6 @@ public abstract class TrackRenderer implements ExoPlayerComponent {
     long resetPositionUs = stream.readReset();
     if (resetPositionUs != C.UNSET_TIME_US) {
       reset(resetPositionUs);
-      return;
     }
   }
 

library/src/main/java/com/google/android/exoplayer/chunk/ContainerMediaChunk.java

@@ -36,9 +36,9 @@ public class ContainerMediaChunk extends BaseMediaChunk implements SingleTrackMe
 
   private final ChunkExtractorWrapper extractorWrapper;
   private final long sampleOffsetUs;
+  private final Format sampleFormat;
 
   private volatile DrmInitData drmInitData;
-  private volatile Format sampleFormat;
   private volatile int bytesLoaded;
   private volatile boolean loadCanceled;
 

library/src/main/java/com/google/android/exoplayer/chunk/FormatEvaluator.java

@@ -70,7 +70,7 @@ public interface FormatEvaluator {
   /**
    * A format evaluation.
    */
-  public static final class Evaluation {
+  final class Evaluation {
 
     /**
      * The selected format.
@@ -99,7 +99,7 @@ public interface FormatEvaluator {
   /**
    * Selects randomly between the available formats, excluding those that are blacklisted.
    */
-  public static final class RandomEvaluator implements FormatEvaluator {
+  final class RandomEvaluator implements FormatEvaluator {
 
     private final Random random;
 
@@ -131,8 +131,8 @@ public interface FormatEvaluator {
         Evaluation evaluation) {
       // Count the number of non-blacklisted formats.
       int nonBlacklistedFormatCount = 0;
-      for (int i = 0; i < blacklistFlags.length; i++) {
-        if (!blacklistFlags[i]) {
+      for (boolean blacklistFlag : blacklistFlags) {
+        if (!blacklistFlag) {
           nonBlacklistedFormatCount++;
         }
       }
@@ -171,7 +171,7 @@ public interface FormatEvaluator {
    * reference implementation only. It is recommended that application developers implement their
    * own adaptive evaluator to more precisely suit their use case.
    */
-  public static final class AdaptiveEvaluator implements FormatEvaluator {
+  final class AdaptiveEvaluator implements FormatEvaluator {
 
     public static final int DEFAULT_MAX_INITIAL_BITRATE = 800000;
 

library/src/main/java/com/google/android/exoplayer/dash/DashChunkSource.java

@@ -371,7 +371,6 @@ public class DashChunkSource implements ChunkSource {
       }
     } catch (BehindLiveWindowException e) {
       fatalError = e;
-      return;
     }
   }
 

library/src/main/java/com/google/android/exoplayer/dash/mpd/MediaPresentationDescriptionParser.java

@@ -90,8 +90,7 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
   // MPD parsing.
 
   @Override
-  public MediaPresentationDescription parse(Uri uri, InputStream inputStream)
-      throws IOException, ParserException {
+  public MediaPresentationDescription parse(Uri uri, InputStream inputStream) throws IOException {
     try {
       XmlPullParser xpp = xmlParserFactory.newPullParser();
       xpp.setInput(inputStream, null);
@@ -101,9 +100,7 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
             "inputStream does not contain a valid media presentation description");
       }
       return parseMediaPresentationDescription(xpp, uri.toString());
-    } catch (XmlPullParserException e) {
-      throw new ParserException(e);
-    } catch (ParseException e) {
+    } catch (XmlPullParserException | ParseException e) {
       throw new ParserException(e);
     }
   }
@@ -114,7 +111,7 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
     long durationMs = parseDuration(xpp, "mediaPresentationDuration", -1);
     long minBufferTimeMs = parseDuration(xpp, "minBufferTime", -1);
     String typeString = xpp.getAttributeValue(null, "type");
-    boolean dynamic = (typeString != null) ? typeString.equals("dynamic") : false;
+    boolean dynamic = typeString != null && typeString.equals("dynamic");
     long minUpdateTimeMs = (dynamic) ? parseDuration(xpp, "minimumUpdatePeriod", -1) : -1;
     long timeShiftBufferDepthMs = (dynamic) ? parseDuration(xpp, "timeShiftBufferDepth", -1) : -1;
     UtcTimingElement utcTiming = null;
@@ -372,7 +369,6 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
     float frameRate = parseFrameRate(xpp, adaptationSetFrameRate);
     int audioChannels = adaptationSetAudioChannels;
     int audioSamplingRate = parseInt(xpp, "audioSamplingRate", adaptationSetAudioSamplingRate);
-    String language = adaptationSetLanguage;
 
     boolean seenFirstBaseUrl = false;
     do {
@@ -399,7 +395,7 @@ public class MediaPresentationDescriptionParser extends DefaultHandler
     } while (!ParserUtil.isEndTag(xpp, "Representation"));
 
     Format format = buildFormat(id, mimeType, width, height, frameRate, audioChannels,
-        audioSamplingRate, bandwidth, language, codecs);
+        audioSamplingRate, bandwidth, adaptationSetLanguage, codecs);
     return buildRepresentation(contentId, -1, format,
         segmentBase != null ? segmentBase : new SingleSegmentBase(baseUrl));
   }

library/src/main/java/com/google/android/exoplayer/dash/mpd/Representation.java

@@ -30,8 +30,8 @@ public abstract class Representation {
   /**
    * Identifies the piece of content to which this {@link Representation} belongs.
    * <p>
-   * For example, all {@link Representation}s belonging to a video should have the same
-   * {@link #contentId}, which should uniquely identify that video.
+   * For example, all {@link Representation}s belonging to a video should have the same content
+   * identifier that uniquely identifies that video.
    */
   public final String contentId;
   /**

library/src/main/java/com/google/android/exoplayer/dash/mpd/SegmentBase.java

@@ -327,7 +327,7 @@ public abstract class SegmentBase {
 
     @Override
     public RangedUri getSegmentUrl(Representation representation, int sequenceNumber) {
-      long time = 0;
+      long time;
       if (segmentTimeline != null) {
         time = segmentTimeline.get(sequenceNumber - startNumber).startTime;
       } else {
@@ -357,8 +357,8 @@ public abstract class SegmentBase {
    */
   public static class SegmentTimelineElement {
 
-    /* package */ long startTime;
-    /* package */ long duration;
+    /* package */ final long startTime;
+    /* package */ final long duration;
 
     /**
      * @param startTime The start time of the element. The value in seconds is the division of this

library/src/main/java/com/google/android/exoplayer/dash/mpd/UrlTemplate.java

@@ -144,14 +144,18 @@ public final class UrlTemplate {
             }
             identifier = identifier.substring(0, formatTagIndex);
           }
-          if (identifier.equals(NUMBER)) {
-            identifiers[identifierCount] = NUMBER_ID;
-          } else if (identifier.equals(BANDWIDTH)) {
-            identifiers[identifierCount] = BANDWIDTH_ID;
-          } else if (identifier.equals(TIME)) {
-            identifiers[identifierCount] = TIME_ID;
-          } else {
-            throw new IllegalArgumentException("Invalid template: " + template);
+          switch (identifier) {
+            case NUMBER:
+              identifiers[identifierCount] = NUMBER_ID;
+              break;
+            case BANDWIDTH:
+              identifiers[identifierCount] = BANDWIDTH_ID;
+              break;
+            case TIME:
+              identifiers[identifierCount] = TIME_ID;
+              break;
+            default:
+              throw new IllegalArgumentException("Invalid template: " + template);
           }
           identifierFormatTags[identifierCount] = formatTag;
         }

library/src/main/java/com/google/android/exoplayer/dash/mpd/UtcTimingElementResolver.java

@@ -154,7 +154,7 @@ public final class UtcTimingElementResolver implements Loader.Callback {
   private static class XsDateTimeParser implements UriLoadable.Parser<Long> {
 
     @Override
-    public Long parse(Uri uri, InputStream inputStream) throws ParserException, IOException {
+    public Long parse(Uri uri, InputStream inputStream) throws IOException {
       String firstLine = new BufferedReader(new InputStreamReader(inputStream)).readLine();
       try {
         return Util.parseXsDateTime(firstLine);
@@ -168,7 +168,7 @@ public final class UtcTimingElementResolver implements Loader.Callback {
   private static class Iso8601Parser implements UriLoadable.Parser<Long> {
 
     @Override
-    public Long parse(Uri uri, InputStream inputStream) throws ParserException, IOException {
+    public Long parse(Uri uri, InputStream inputStream) throws IOException {
       String firstLine = new BufferedReader(new InputStreamReader(inputStream)).readLine();
       try {
         // TODO: It may be necessary to handle timestamp offsets from UTC.

library/src/main/java/com/google/android/exoplayer/drm/DrmInitData.java

@@ -35,12 +35,12 @@ public interface DrmInitData {
    * @param schemeUuid The DRM scheme's UUID.
    * @return The initialization data for the scheme, or null if the scheme is not supported.
    */
-  public abstract SchemeInitData get(UUID schemeUuid);
+  SchemeInitData get(UUID schemeUuid);
 
   /**
    * A {@link DrmInitData} implementation that maps UUID onto scheme specific data.
    */
-  public static final class Mapped implements DrmInitData {
+  final class Mapped implements DrmInitData {
 
     private final Map<UUID, SchemeInitData> schemeData;
 
@@ -68,9 +68,9 @@ public interface DrmInitData {
   /**
    * A {@link DrmInitData} implementation that returns the same initialization data for all schemes.
    */
-  public static final class Universal implements DrmInitData {
+  final class Universal implements DrmInitData {
 
-    private SchemeInitData data;
+    private final SchemeInitData data;
 
     public Universal(SchemeInitData data) {
       this.data = data;
@@ -86,7 +86,7 @@ public interface DrmInitData {
   /**
    * Scheme initialization data.
    */
-  public static final class SchemeInitData {
+  final class SchemeInitData {
 
     /**
      * The mimeType of {@link #data}.

library/src/main/java/com/google/android/exoplayer/drm/DrmSessionManager.java

@@ -27,24 +27,24 @@ public interface DrmSessionManager {
   /**
    * The error state. {@link #getError()} can be used to retrieve the cause.
    */
-  public static final int STATE_ERROR = 0;
+  int STATE_ERROR = 0;
   /**
    * The session is closed.
    */
-  public static final int STATE_CLOSED = 1;
+  int STATE_CLOSED = 1;
   /**
    * The session is being opened (i.e. {@link #open(DrmInitData)} has been called, but the session
    * is not yet open).
    */
-  public static final int STATE_OPENING = 2;
+  int STATE_OPENING = 2;
   /**
    * The session is open, but does not yet have the keys required for decryption.
    */
-  public static final int STATE_OPENED = 3;
+  int STATE_OPENED = 3;
   /**
    * The session is open and has the keys required for decryption.
    */
-  public static final int STATE_OPENED_WITH_KEYS = 4;
+  int STATE_OPENED_WITH_KEYS = 4;
 
   /**
    * Opens the session, possibly asynchronously.

library/src/main/java/com/google/android/exoplayer/extractor/Extractor.java

@@ -29,18 +29,18 @@ public interface Extractor {
    * to the next {@link #read(ExtractorInput, PositionHolder)} is required to provide data
    * continuing from the position in the stream reached by the returning call.
    */
-  public static final int RESULT_CONTINUE = 0;
+  int RESULT_CONTINUE = 0;
   /**
    * Returned by {@link #read(ExtractorInput, PositionHolder)} if the {@link ExtractorInput} passed
    * to the next {@link #read(ExtractorInput, PositionHolder)} is required to provide data starting
    * from a specified position in the stream.
    */
-  public static final int RESULT_SEEK = 1;
+  int RESULT_SEEK = 1;
   /**
    * Returned by {@link #read(ExtractorInput, PositionHolder)} if the end of the
    * {@link ExtractorInput} was reached. Equal to {@link C#RESULT_END_OF_INPUT}.
    */
-  public static final int RESULT_END_OF_INPUT = C.RESULT_END_OF_INPUT;
+  int RESULT_END_OF_INPUT = C.RESULT_END_OF_INPUT;
 
   /**
    * Initializes the extractor with an {@link ExtractorOutput}.

library/src/main/java/com/google/android/exoplayer/extractor/ExtractorSampleSource.java

@@ -315,9 +315,7 @@ public final class ExtractorSampleSource implements SampleSource, ExtractorOutpu
       for (int i = 0; i < extractors.length; i++) {
         try {
           extractors[i] = DEFAULT_EXTRACTOR_CLASSES.get(i).newInstance();
-        } catch (InstantiationException e) {
-          throw new IllegalStateException("Unexpected error creating default extractor", e);
-        } catch (IllegalAccessException e) {
+        } catch (Exception e) {
           throw new IllegalStateException("Unexpected error creating default extractor", e);
         }
       }
@@ -569,7 +567,7 @@ public final class ExtractorSampleSource implements SampleSource, ExtractorOutpu
     // If we're not pending a reset, see if we can seek within the sample queues.
     boolean seekInsideBuffer = !isPendingReset();
     for (int i = 0; seekInsideBuffer && i < sampleQueues.length; i++) {
-      seekInsideBuffer &= sampleQueues[i].skipToKeyframeBefore(positionUs);
+      seekInsideBuffer = sampleQueues[i].skipToKeyframeBefore(positionUs);
     }
     // If we failed to seek within the sample queues, we need to restart.
     if (!seekInsideBuffer) {
@@ -827,7 +825,7 @@ public final class ExtractorSampleSource implements SampleSource, ExtractorOutpu
      * @throws InterruptedException Thrown if the thread was interrupted.
      */
     public Extractor selectExtractor(ExtractorInput input)
-        throws UnrecognizedInputFormatException, IOException, InterruptedException {
+        throws IOException, InterruptedException {
       if (extractor != null) {
         return extractor;
       }

library/src/main/java/com/google/android/exoplayer/extractor/flv/VideoTagPayloadReader.java

@@ -137,10 +137,8 @@ import java.util.List;
    * Builds initialization data for a {@link Format} from H.264 (AVC) codec private data.
    *
    * @return The AvcSequenceHeader data needed to initialize the video codec.
-   * @throws ParserException If the initialization data could not be built.
    */
-  private AvcSequenceHeaderData parseAvcCodecPrivate(ParsableByteArray buffer)
-      throws ParserException {
+  private AvcSequenceHeaderData parseAvcCodecPrivate(ParsableByteArray buffer) {
     // TODO: Deduplicate with AtomParsers.parseAvcCFromParent.
     buffer.setPosition(4);
     int nalUnitLengthFieldLength = (buffer.readUnsignedByte() & 0x03) + 1;

library/src/main/java/com/google/android/exoplayer/extractor/mkv/DefaultEbmlReader.java

@@ -145,8 +145,8 @@ import java.util.Stack;
    * @throws IOException If an error occurs reading from the input.
    * @throws InterruptedException If the thread is interrupted.
    */
-  private long maybeResyncToNextLevel1Element(ExtractorInput input) throws EOFException,
-      IOException, InterruptedException {
+  private long maybeResyncToNextLevel1Element(ExtractorInput input) throws IOException,
+      InterruptedException {
     input.resetPeekPosition();
     while (true) {
       input.peekFully(scratch, 0, MAX_ID_BYTES);

library/src/main/java/com/google/android/exoplayer/extractor/mkv/EbmlReader.java

@@ -32,34 +32,34 @@ import java.io.IOException;
   /**
    * Type for unknown elements.
    */
-  public static final int TYPE_UNKNOWN = 0;
+  int TYPE_UNKNOWN = 0;
   /**
    * Type for elements that contain child elements.
    */
-  public static final int TYPE_MASTER = 1;
+  int TYPE_MASTER = 1;
   /**
    * Type for integer value elements of up to 8 bytes.
    */
-  public static final int TYPE_UNSIGNED_INT = 2;
+  int TYPE_UNSIGNED_INT = 2;
   /**
    * Type for string elements.
    */
-  public static final int TYPE_STRING = 3;
+  int TYPE_STRING = 3;
   /**
    * Type for binary elements.
    */
-  public static final int TYPE_BINARY = 4;
+  int TYPE_BINARY = 4;
   /**
    * Type for IEEE floating point value elements of either 4 or 8 bytes.
    */
-  public static final int TYPE_FLOAT = 5;
+  int TYPE_FLOAT = 5;
 
   /**
    * Initializes the extractor with an {@link EbmlReaderOutput}.
    *
    * @param output An {@link EbmlReaderOutput} to receive events.
    */
-  public void init(EbmlReaderOutput output);
+  void init(EbmlReaderOutput output);
 
   /**
    * Resets the state of the reader.
@@ -67,7 +67,7 @@ import java.io.IOException;
    * Subsequent calls to {@link #read(ExtractorInput)} will start reading a new EBML structure
    * from scratch.
    */
-  public void reset();
+  void reset();
 
   /**
    * Reads from an {@link ExtractorInput}, invoking an event callback if possible.
@@ -78,7 +78,6 @@ import java.io.IOException;
    * @throws IOException If an error occurs reading from the input.
    * @throws InterruptedException If the thread is interrupted.
    */
-  public boolean read(ExtractorInput input) throws ParserException, IOException,
-      InterruptedException;
+  boolean read(ExtractorInput input) throws IOException, InterruptedException;
 
 }

library/src/main/java/com/google/android/exoplayer/extractor/mkv/EbmlReaderOutput.java

@@ -112,6 +112,6 @@ import java.io.IOException;
    * @throws InterruptedException If the thread is interrupted.
    */
   void binaryElement(int id, int contentsSize, ExtractorInput input)
-      throws ParserException, IOException, InterruptedException;
+      throws IOException, InterruptedException;
 
 }

library/src/main/java/com/google/android/exoplayer/extractor/mp3/Id3Util.java

@@ -100,7 +100,7 @@ import java.nio.charset.Charset;
       if (extendedHeaderSize > frame.bytesLeft()) {
         return null;
       }
-      int paddingSize = 0;
+      int paddingSize;
       if (extendedHeaderSize >= 6) {
         frame.skipBytes(2); // extended flags
         paddingSize = frame.readUnsignedIntToInt();

library/src/main/java/com/google/android/exoplayer/extractor/mp4/Atom.java

@@ -260,8 +260,8 @@ import java.util.List;
     @Override
     public String toString() {
       return getAtomTypeString(type)
-          + " leaves: " + Arrays.toString(leafChildren.toArray(new LeafAtom[0]))
-          + " containers: " + Arrays.toString(containerChildren.toArray(new ContainerAtom[0]));
+          + " leaves: " + Arrays.toString(leafChildren.toArray())
+          + " containers: " + Arrays.toString(containerChildren.toArray());
     }
 
   }

library/src/main/java/com/google/android/exoplayer/extractor/mp4/Mp4Extractor.java

@@ -69,7 +69,6 @@ public final class Mp4Extractor implements Extractor, SeekMap {
   private int atomHeaderBytesRead;
   private ParsableByteArray atomData;
 
-  private int sampleSize;
   private int sampleBytesWritten;
   private int sampleCurrentNalBytesRemaining;
 
@@ -341,7 +340,7 @@ public final class Mp4Extractor implements Extractor, SeekMap {
       }
     }
     this.durationUs = durationUs;
-    this.tracks = tracks.toArray(new Mp4Track[0]);
+    this.tracks = tracks.toArray(new Mp4Track[tracks.size()]);
     extractorOutput.endTracks();
     extractorOutput.seekMap(this);
   }
@@ -378,7 +377,7 @@ public final class Mp4Extractor implements Extractor, SeekMap {
       return RESULT_SEEK;
     }
     input.skipFully((int) skipAmount);
-    sampleSize = track.sampleTable.sizes[sampleIndex];
+    int sampleSize = track.sampleTable.sizes[sampleIndex];
     if (track.track.nalUnitLengthFieldLength != -1) {
       // Zero the top three bytes of the array that we'll use to parse nal unit lengths, in case
       // they're only 1 or 2 bytes long.

library/src/main/java/com/google/android/exoplayer/extractor/ogg/VorbisBitArray.java

@@ -26,7 +26,9 @@ import com.google.android.exoplayer.util.Assertions;
 /* package */ final class VorbisBitArray {
 
   public final byte[] data;
-  private int limit;
+
+  private final int limit;
+
   private int byteOffset;
   private int bitOffset;
 

library/src/main/java/com/google/android/exoplayer/extractor/ogg/VorbisUtil.java

@@ -174,7 +174,7 @@ import java.util.Arrays;
     bitArray.skipBits(headerData.getPosition() * 8);
 
     for (int i = 0; i < numberOfBooks; i++) {
-      readBook(bitArray);
+      skipBook(bitArray);
     }
 
     int timeCount = bitArray.readBits(6) + 1;
@@ -336,7 +336,7 @@ import java.util.Arrays;
     }
   }
 
-  private static CodeBook readBook(VorbisBitArray bitArray) throws ParserException {
+  private static void skipBook(VorbisBitArray bitArray) throws ParserException {
     if (bitArray.readBits(24) != 0x564342) {
       throw new ParserException("expected code book to start with [0x56, 0x43, 0x42] at "
           + bitArray.getPosition());
@@ -393,7 +393,6 @@ import java.util.Arrays;
       // discard (no decoding required yet)
       bitArray.skipBits((int) (lookupValuesCount * valueBits));
     }
-    return new CodeBook(dimensions, entries, lengthMap, lookupType, isOrdered);
   }
 
   /**
@@ -403,25 +402,6 @@ import java.util.Arrays;
     return (long) Math.floor(Math.pow(entries, 1.d / dimension));
   }
 
-  public static final class CodeBook {
-
-    public final int dimensions;
-    public final int entries;
-    public final long[] lengthMap;
-    public final int lookupType;
-    public final boolean isOrdered;
-
-    public CodeBook(int dimensions, int entries, long[] lengthMap, int lookupType,
-        boolean isOrdered) {
-      this.dimensions = dimensions;
-      this.entries = entries;
-      this.lengthMap = lengthMap;
-      this.lookupType = lookupType;
-      this.isOrdered = isOrdered;
-    }
-
-  }
-
   public static final class CommentHeader {
 
     public final String vendor;

library/src/main/java/com/google/android/exoplayer/extractor/ts/H262Reader.java

@@ -85,71 +85,69 @@ import java.util.Collections;
 
   @Override
   public void consume(ParsableByteArray data) {
-    while (data.bytesLeft() > 0) {
-      int offset = data.getPosition();
-      int limit = data.limit();
-      byte[] dataArray = data.data;
-
-      // Append the data to the buffer.
-      totalBytesWritten += data.bytesLeft();
-      output.sampleData(data, data.bytesLeft());
-
-      int searchOffset = offset;
-      while (true) {
-        int startCodeOffset = NalUnitUtil.findNalUnit(dataArray, searchOffset, limit, prefixFlags);
-
-        if (startCodeOffset == limit) {
-          // We've scanned to the end of the data without finding another start code.
-          if (!hasOutputFormat) {
-            csdBuffer.onData(dataArray, offset, limit);
-          }
-          return;
-        }
+    int offset = data.getPosition();
+    int limit = data.limit();
+    byte[] dataArray = data.data;
+
+    // Append the data to the buffer.
+    totalBytesWritten += data.bytesLeft();
+    output.sampleData(data, data.bytesLeft());
 
-        // We've found a start code with the following value.
-        int startCodeValue = data.data[startCodeOffset + 3] & 0xFF;
+    int searchOffset = offset;
+    while (true) {
+      int startCodeOffset = NalUnitUtil.findNalUnit(dataArray, searchOffset, limit, prefixFlags);
 
+      if (startCodeOffset == limit) {
+        // We've scanned to the end of the data without finding another start code.
         if (!hasOutputFormat) {
-          // This is the number of bytes from the current offset to the start of the next start
-          // code. It may be negative if the start code started in the previously consumed data.
-          int lengthToStartCode = startCodeOffset - offset;
-          if (lengthToStartCode > 0) {
-            csdBuffer.onData(dataArray, offset, startCodeOffset);
-          }
-          // This is the number of bytes belonging to the next start code that have already been
-          // passed to csdDataTargetBuffer.
-          int bytesAlreadyPassed = lengthToStartCode < 0 ? -lengthToStartCode : 0;
-          if (csdBuffer.onStartCode(startCodeValue, bytesAlreadyPassed)) {
-            // The csd data is complete, so we can parse and output the media format.
-            Pair<Format, Long> result = parseCsdBuffer(csdBuffer);
-            output.format(result.first);
-            frameDurationUs = result.second;
-            hasOutputFormat = true;
-          }
+          csdBuffer.onData(dataArray, offset, limit);
         }
+        return;
+      }
+
+      // We've found a start code with the following value.
+      int startCodeValue = data.data[startCodeOffset + 3] & 0xFF;
 
-        if (hasOutputFormat && (startCodeValue == START_GROUP || startCodeValue == START_PICTURE)) {
-          int bytesWrittenPastStartCode = limit - startCodeOffset;
-          if (foundFirstFrameInGroup) {
-            int flags = isKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0;
-            int size = (int) (totalBytesWritten - framePosition) - bytesWrittenPastStartCode;
-            output.sampleMetadata(frameTimeUs, flags, size, bytesWrittenPastStartCode, null);
-            isKeyframe = false;
-          }
-          if (startCodeValue == START_GROUP) {
-            foundFirstFrameInGroup = false;
-            isKeyframe = true;
-          } else /* startCode == START_PICTURE */ {
-            frameTimeUs = pesPtsUsAvailable ? pesTimeUs : (frameTimeUs + frameDurationUs);
-            framePosition = totalBytesWritten - bytesWrittenPastStartCode;
-            pesPtsUsAvailable = false;
-            foundFirstFrameInGroup = true;
-          }
+      if (!hasOutputFormat) {
+        // This is the number of bytes from the current offset to the start of the next start
+        // code. It may be negative if the start code started in the previously consumed data.
+        int lengthToStartCode = startCodeOffset - offset;
+        if (lengthToStartCode > 0) {
+          csdBuffer.onData(dataArray, offset, startCodeOffset);
         }
+        // This is the number of bytes belonging to the next start code that have already been
+        // passed to csdDataTargetBuffer.
+        int bytesAlreadyPassed = lengthToStartCode < 0 ? -lengthToStartCode : 0;
+        if (csdBuffer.onStartCode(startCodeValue, bytesAlreadyPassed)) {
+          // The csd data is complete, so we can parse and output the media format.
+          Pair<Format, Long> result = parseCsdBuffer(csdBuffer);
+          output.format(result.first);
+          frameDurationUs = result.second;
+          hasOutputFormat = true;
+        }
+      }
 
-        offset = startCodeOffset;
-        searchOffset = offset + 3;
+      if (hasOutputFormat && (startCodeValue == START_GROUP || startCodeValue == START_PICTURE)) {
+        int bytesWrittenPastStartCode = limit - startCodeOffset;
+        if (foundFirstFrameInGroup) {
+          int flags = isKeyframe ? C.BUFFER_FLAG_KEY_FRAME : 0;
+          int size = (int) (totalBytesWritten - framePosition) - bytesWrittenPastStartCode;
+          output.sampleMetadata(frameTimeUs, flags, size, bytesWrittenPastStartCode, null);
+          isKeyframe = false;
+        }
+        if (startCodeValue == START_GROUP) {
+          foundFirstFrameInGroup = false;
+          isKeyframe = true;
+        } else /* startCode == START_PICTURE */ {
+          frameTimeUs = pesPtsUsAvailable ? pesTimeUs : (frameTimeUs + frameDurationUs);
+          framePosition = totalBytesWritten - bytesWrittenPastStartCode;
+          pesPtsUsAvailable = false;
+          foundFirstFrameInGroup = true;
+        }
       }
+
+      offset = startCodeOffset;
+      searchOffset = offset + 3;
     }
   }
 

library/src/main/java/com/google/android/exoplayer/extractor/ts/H264Reader.java

@@ -94,46 +94,44 @@ import java.util.List;
 
   @Override
   public void consume(ParsableByteArray data) {
-    while (data.bytesLeft() > 0) {
-      int offset = data.getPosition();
-      int limit = data.limit();
-      byte[] dataArray = data.data;
-
-      // Append the data to the buffer.
-      totalBytesWritten += data.bytesLeft();
-      output.sampleData(data, data.bytesLeft());
-
-      // Scan the appended data, processing NAL units as they are encountered
-      while (true) {
-        int nalUnitOffset = NalUnitUtil.findNalUnit(dataArray, offset, limit, prefixFlags);
-
-        if (nalUnitOffset == limit) {
-          // We've scanned to the end of the data without finding the start of another NAL unit.
-          nalUnitData(dataArray, offset, limit);
-          return;
-        }
+    int offset = data.getPosition();
+    int limit = data.limit();
+    byte[] dataArray = data.data;
 
-        // We've seen the start of a NAL unit of the following type.
-        int nalUnitType = NalUnitUtil.getNalUnitType(dataArray, nalUnitOffset);
+    // Append the data to the buffer.
+    totalBytesWritten += data.bytesLeft();
+    output.sampleData(data, data.bytesLeft());
 
-        // This is the number of bytes from the current offset to the start of the next NAL unit.
-        // It may be negative if the NAL unit started in the previously consumed data.
-        int lengthToNalUnit = nalUnitOffset - offset;
-        if (lengthToNalUnit > 0) {
-          nalUnitData(dataArray, offset, nalUnitOffset);
-        }
-        int bytesWrittenPastPosition = limit - nalUnitOffset;
-        long absolutePosition = totalBytesWritten - bytesWrittenPastPosition;
-        // Indicate the end of the previous NAL unit. If the length to the start of the next unit
-        // is negative then we wrote too many bytes to the NAL buffers. Discard the excess bytes
-        // when notifying that the unit has ended.
-        endNalUnit(absolutePosition, bytesWrittenPastPosition,
-            lengthToNalUnit < 0 ? -lengthToNalUnit : 0, pesTimeUs);
-        // Indicate the start of the next NAL unit.
-        startNalUnit(absolutePosition, nalUnitType, pesTimeUs);
-        // Continue scanning the data.
-        offset = nalUnitOffset + 3;
+    // Scan the appended data, processing NAL units as they are encountered
+    while (true) {
+      int nalUnitOffset = NalUnitUtil.findNalUnit(dataArray, offset, limit, prefixFlags);
+
+      if (nalUnitOffset == limit) {
+        // We've scanned to the end of the data without finding the start of another NAL unit.
+        nalUnitData(dataArray, offset, limit);
+        return;
+      }
+
+      // We've seen the start of a NAL unit of the following type.
+      int nalUnitType = NalUnitUtil.getNalUnitType(dataArray, nalUnitOffset);
+
+      // This is the number of bytes from the current offset to the start of the next NAL unit.
+      // It may be negative if the NAL unit started in the previously consumed data.
+      int lengthToNalUnit = nalUnitOffset - offset;
+      if (lengthToNalUnit > 0) {
+        nalUnitData(dataArray, offset, nalUnitOffset);
       }
+      int bytesWrittenPastPosition = limit - nalUnitOffset;
+      long absolutePosition = totalBytesWritten - bytesWrittenPastPosition;
+      // Indicate the end of the previous NAL unit. If the length to the start of the next unit
+      // is negative then we wrote too many bytes to the NAL buffers. Discard the excess bytes
+      // when notifying that the unit has ended.
+      endNalUnit(absolutePosition, bytesWrittenPastPosition,
+          lengthToNalUnit < 0 ? -lengthToNalUnit : 0, pesTimeUs);
+      // Indicate the start of the next NAL unit.
+      startNalUnit(absolutePosition, nalUnitType, pesTimeUs);
+      // Continue scanning the data.
+      offset = nalUnitOffset + 3;
     }
   }
 

library/src/main/java/com/google/android/exoplayer/extractor/ts/H265Reader.java

@@ -342,8 +342,8 @@ import java.util.Collections;
   private static void skipShortTermRefPicSets(ParsableNalUnitBitArray bitArray) {
     int numShortTermRefPicSets = bitArray.readUnsignedExpGolombCodedInt();
     boolean interRefPicSetPredictionFlag = false;
-    int numNegativePics = 0;
-    int numPositivePics = 0;
+    int numNegativePics;
+    int numPositivePics;
     // As this method applies in a SPS, the only element of NumDeltaPocs accessed is the previous
     // one, so we just keep track of that rather than storing the whole array.
     // RefRpsIdx = stRpsIdx - (delta_idx_minus1 + 1) and delta_idx_minus1 is always zero in SPS.

library/src/main/java/com/google/android/exoplayer/extractor/ts/PsExtractor.java

@@ -216,7 +216,7 @@ public final class PsExtractor implements Extractor {
       input.readFully(psPacketBuffer.data, 0, pesLength);
       psPacketBuffer.setPosition(6);
       psPacketBuffer.setLimit(pesLength);
-      payloadReader.consume(psPacketBuffer, output);
+      payloadReader.consume(psPacketBuffer);
       psPacketBuffer.setLimit(psPacketBuffer.capacity());
     }
 
@@ -253,8 +253,8 @@ public final class PsExtractor implements Extractor {
      * Notifies the reader that a seek has occurred.
      * <p>
      * Following a call to this method, the data passed to the next invocation of
-     * {@link #consume(ParsableByteArray, ExtractorOutput)} will not be a continuation of
-     * the data that was previously passed. Hence the reader should reset any internal state.
+     * {@link #consume(ParsableByteArray)} will not be a continuation of the data that was
+     * previously passed. Hence the reader should reset any internal state.
      */
     public void seek() {
       seenFirstDts = false;
@@ -265,9 +265,8 @@ public final class PsExtractor implements Extractor {
      * Consumes the payload of a PS packet.
      *
      * @param data The PES packet. The position will be set to the start of the payload.
-     * @param output The output to which parsed data should be written.
      */
-    public void consume(ParsableByteArray data, ExtractorOutput output) {
+    public void consume(ParsableByteArray data) {
       data.readBytes(pesScratch.data, 0, 3);
       pesScratch.setPosition(0);
       parseHeader();

library/src/main/java/com/google/android/exoplayer/extractor/wav/WavHeaderReader.java

@@ -39,14 +39,13 @@ import java.io.IOException;
    * Peeks and returns a {@code WavHeader}.
    *
    * @param input Input stream to peek the WAV header from.
+   * @throws ParserException If the input file is an incorrect RIFF WAV.
    * @throws IOException If peeking from the input fails.
    * @throws InterruptedException If interrupted while peeking from input.
-   * @throws ParserException If the input file is an incorrect RIFF WAV.
    * @return A new {@code WavHeader} peeked from {@code input}, or null if the input is not a
    *     supported WAV format.
    */
-  public static WavHeader peek(ExtractorInput input)
-      throws IOException, InterruptedException, ParserException {
+  public static WavHeader peek(ExtractorInput input) throws IOException, InterruptedException {
     Assertions.checkNotNull(input);
 
     // Allocate a scratch buffer large enough to store the format chunk.
@@ -117,12 +116,12 @@ import java.io.IOException;
    * @param input Input stream to skip to the data chunk in. Its peek position must be pointing to
    *     a valid chunk header.
    * @param wavHeader WAV header to populate with data bounds.
+   * @throws ParserException If an error occurs parsing chunks.
    * @throws IOException If reading from the input fails.
    * @throws InterruptedException If interrupted while reading from input.
-   * @throws ParserException If an error occurs parsing chunks.
    */
   public static void skipToData(ExtractorInput input, WavHeader wavHeader)
-      throws IOException, InterruptedException, ParserException {
+      throws IOException, InterruptedException {
     Assertions.checkNotNull(input);
     Assertions.checkNotNull(wavHeader);
 

library/src/main/java/com/google/android/exoplayer/hls/Aes128DataSource.java

@@ -68,9 +68,7 @@ import javax.crypto.spec.SecretKeySpec;
     Cipher cipher;
     try {
       cipher = Cipher.getInstance("AES/CBC/PKCS7Padding");
-    } catch (NoSuchAlgorithmException e) {
-      throw new RuntimeException(e);
-    } catch (NoSuchPaddingException e) {
+    } catch (NoSuchAlgorithmException | NoSuchPaddingException e) {
       throw new RuntimeException(e);
     }
 
@@ -79,9 +77,7 @@ import javax.crypto.spec.SecretKeySpec;
 
     try {
       cipher.init(Cipher.DECRYPT_MODE, cipherKey, cipherIV);
-    } catch (InvalidKeyException e) {
-      throw new RuntimeException(e);
-    } catch (InvalidAlgorithmParameterException e) {
+    } catch (InvalidKeyException | InvalidAlgorithmParameterException e) {
       throw new RuntimeException(e);
     }
 

library/src/main/java/com/google/android/exoplayer/hls/HlsChunkSource.java

@@ -663,8 +663,8 @@ public class HlsChunkSource {
   }
 
   private boolean allEnabledVariantsBlacklisted() {
-    for (int i = 0; i < enabledVariantBlacklistFlags.length; i++) {
-      if (!enabledVariantBlacklistFlags[i]) {
+    for (boolean enabledVariantBlacklistFlag : enabledVariantBlacklistFlags) {
+      if (!enabledVariantBlacklistFlag) {
         return false;
       }
     }

library/src/main/java/com/google/android/exoplayer/hls/HlsSampleSource.java

@@ -60,7 +60,7 @@ public final class HlsSampleSource implements SampleSource, Loader.Callback {
 
   private final Loader loader;
   private final HlsChunkSource chunkSource;
-  private final LinkedList<HlsMediaChunk> mediaChunks = new LinkedList<HlsMediaChunk>();
+  private final LinkedList<HlsMediaChunk> mediaChunks = new LinkedList<>();
   private final HlsOutput output;
   private final int bufferSizeContribution;
   private final ChunkHolder nextChunkHolder;
@@ -262,13 +262,7 @@ public final class HlsSampleSource implements SampleSource, Loader.Callback {
 
   /* package */ boolean isReady(int group) {
     Assertions.checkState(groupEnabledStates[group]);
-    if (loadingFinished) {
-      return true;
-    }
-    if (isPendingReset()) {
-      return false;
-    }
-    return !sampleQueues[group].isEmpty();
+    return loadingFinished || (!isPendingReset() && !sampleQueues[group].isEmpty());
   }
 
   /* package */ void maybeThrowError() throws IOException {

library/src/main/java/com/google/android/exoplayer/hls/playlist/HlsParserUtil.java

@@ -25,9 +25,6 @@ import java.util.regex.Pattern;
  */
 /* package */ final class HlsParserUtil {
 
-  private static final String BOOLEAN_YES = "YES";
-  private static final String BOOLEAN_NO = "NO";
-
   private HlsParserUtil() {}
 
   public static String parseStringAttr(String line, Pattern pattern, String tag)
@@ -57,16 +54,4 @@ import java.util.regex.Pattern;
     return null;
   }
 
-  public static boolean parseOptionalBooleanAttr(String line, Pattern pattern) {
-    Matcher matcher = pattern.matcher(line);
-    if (matcher.find()) {
-      return BOOLEAN_YES.equals(matcher.group(1));
-    }
-    return false;
-  }
-
-  public static Pattern compileBooleanAttrPattern(String attrName) {
-    return Pattern.compile(attrName + "=(" + BOOLEAN_YES + "|" + BOOLEAN_NO + ")");
-  }
-
 }

library/src/main/java/com/google/android/exoplayer/hls/playlist/HlsPlaylistParser.java

@@ -109,7 +109,7 @@ public final class HlsPlaylistParser implements UriLoadable.Parser<HlsPlaylist>
   //     HlsParserUtil.compileBooleanAttrPattern(DEFAULT_ATTR);
 
   @Override
-  public HlsPlaylist parse(Uri uri, InputStream inputStream) throws IOException, ParserException {
+  public HlsPlaylist parse(Uri uri, InputStream inputStream) throws IOException {
     BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
     Queue<String> extraLines = new LinkedList<>();
     String line;

library/src/main/java/com/google/android/exoplayer/metadata/MetadataParser.java

@@ -30,7 +30,7 @@ public interface MetadataParser<T> {
    * @param mimeType A metadata mime type.
    * @return Whether the mime type is supported.
    */
-  public boolean canParse(String mimeType);
+  boolean canParse(String mimeType);
 
   /**
    * Parses metadata objects of type <T> from the provided binary data.
@@ -40,6 +40,6 @@ public interface MetadataParser<T> {
    * @return @return A parsed metadata object of type <T>.
    * @throws IOException If a problem occurred parsing the data.
    */
-  public T parse(byte[] data, int size) throws IOException;
+  T parse(byte[] data, int size) throws IOException;
 
 }

library/src/main/java/com/google/android/exoplayer/smoothstreaming/SmoothStreamingChunkSource.java

@@ -266,10 +266,9 @@ public class SmoothStreamingChunkSource implements ChunkSource {
     int manifestTrackIndex = getManifestTrackIndex(streamElement, selectedFormat);
     Uri uri = streamElement.buildRequestUri(manifestTrackIndex, chunkIndex);
 
-    Chunk mediaChunk = newMediaChunk(selectedFormat, dataSource, uri, null,
-        currentAbsoluteChunkIndex, chunkStartTimeUs, chunkEndTimeUs, evaluation.trigger,
-        extractorWrapper, drmInitData, selectedFormat);
-    out.chunk = mediaChunk;
+    out.chunk = newMediaChunk(selectedFormat, dataSource, uri, null, currentAbsoluteChunkIndex,
+        chunkStartTimeUs, chunkEndTimeUs, evaluation.trigger, extractorWrapper, drmInitData,
+        selectedFormat);
   }
 
   @Override

library/src/main/java/com/google/android/exoplayer/smoothstreaming/SmoothStreamingManifestParser.java

@@ -63,8 +63,7 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
   }
 
   @Override
-  public SmoothStreamingManifest parse(Uri uri, InputStream inputStream)
-      throws IOException, ParserException {
+  public SmoothStreamingManifest parse(Uri uri, InputStream inputStream) throws IOException {
     try {
       XmlPullParser xmlParser = xmlParserFactory.newPullParser();
       xmlParser.setInput(inputStream, null);
@@ -105,8 +104,7 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
       this.normalizedAttributes = new LinkedList<>();
     }
 
-    public final Object parse(XmlPullParser xmlParser) throws XmlPullParserException, IOException,
-        ParserException {
+    public final Object parse(XmlPullParser xmlParser) throws XmlPullParserException, IOException {
       String tagName;
       boolean foundStartTag = false;
       int skippingElementDepth = 0;
@@ -224,17 +222,15 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
 
     /**
      * @param xmlParser The underlying {@link XmlPullParser}
-     * @throws ParserException
      */
-    protected void parseText(XmlPullParser xmlParser) throws ParserException {
+    protected void parseText(XmlPullParser xmlParser) {
       // Do nothing.
     }
 
     /**
      * @param xmlParser The underlying {@link XmlPullParser}
-     * @throws ParserException
      */
-    protected void parseEndTag(XmlPullParser xmlParser) throws ParserException {
+    protected void parseEndTag(XmlPullParser xmlParser) {
       // Do nothing.
     }
 
@@ -335,6 +331,8 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
     private static final String KEY_LOOKAHEAD_COUNT = "LookaheadCount";
     private static final String KEY_IS_LIVE = "IsLive";
 
+    private final List<StreamElement> streamElements;
+
     private int majorVersion;
     private int minorVersion;
     private long timescale;
@@ -343,7 +341,6 @@ public class SmoothStreamingManifestParser implements UriLoadable.Parser<SmoothS
     private int lookAheadCount;
     private boolean isLive;
     private ProtectionElement protectionElement;
-    private List<StreamElement> streamElements;
 
     public SmoothStreamMediaParser(ElementParser parent, String baseUri) {
       super(parent, baseUri, TAG);

library/src/main/java/com/google/android/exoplayer/text/CuePainter.java

@@ -233,7 +233,6 @@ import android.util.Log;
     }
 
     int textTop;
-    int textBottom;
     if (cueLine != Cue.DIMEN_UNSET) {
       int anchorPosition;
       if (cueLineType == Cue.LINE_TYPE_FRACTION) {
@@ -250,17 +249,13 @@ import android.util.Log;
       textTop = cueLineAnchor == Cue.ANCHOR_TYPE_END ? anchorPosition - textHeight
           : cueLineAnchor == Cue.ANCHOR_TYPE_MIDDLE ? (anchorPosition * 2 - textHeight) / 2
           : anchorPosition;
-      textBottom = textTop + textHeight;
-      if (textBottom > parentBottom) {
+      if (textTop + textHeight > parentBottom) {
         textTop = parentBottom - textHeight;
-        textBottom = parentBottom;
       } else if (textTop < parentTop) {
         textTop = parentTop;
-        textBottom = parentTop + textHeight;
       }
     } else {
       textTop = parentBottom - textHeight - (int) (parentHeight * bottomPaddingFraction);
-      textBottom = textTop + textHeight;
     }
 
     textWidth = textRight - textLeft;

library/src/main/java/com/google/android/exoplayer/text/Subtitle.java

@@ -28,7 +28,7 @@ public interface Subtitle {
    * @param timeUs The time in microseconds.
    * @return The index of the next event, or -1 if there are no events after the specified time.
    */
-  public int getNextEventTimeIndex(long timeUs);
+  int getNextEventTimeIndex(long timeUs);
 
   /**
    * Gets the number of event times, where events are defined as points in time at which the cues
@@ -36,7 +36,7 @@ public interface Subtitle {
    *
    * @return The number of event times.
    */
-  public int getEventTimeCount();
+  int getEventTimeCount();
 
   /**
    * Gets the event time at a specified index.
@@ -44,14 +44,7 @@ public interface Subtitle {
    * @param index The index of the event time to obtain.
    * @return The event time in microseconds.
    */
-  public long getEventTime(int index);
-
-  /**
-   * Convenience method for obtaining the last event time.
-   *
-   * @return The time of the last event in microseconds, or -1 if {@code getEventTimeCount() == 0}.
-   */
-  public long getLastEventTime();
+  long getEventTime(int index);
 
   /**
    * Retrieve the subtitle cues that should be displayed at a given time.
@@ -59,6 +52,6 @@ public interface Subtitle {
    * @param timeUs The time in microseconds.
    * @return A list of cues that should be displayed, possibly empty.
    */
-  public List<Cue> getCues(long timeUs);
+  List<Cue> getCues(long timeUs);
 
 }

library/src/main/java/com/google/android/exoplayer/text/SubtitleOutputBuffer.java

@@ -51,11 +51,6 @@ import java.util.List;
     return subtitle.getEventTime(index) + offsetUs;
   }
 
-  @Override
-  public long getLastEventTime() {
-    return subtitle.getLastEventTime() + offsetUs;
-  }
-
   @Override
   public int getNextEventTimeIndex(long timeUs) {
     return subtitle.getNextEventTimeIndex(timeUs - offsetUs);

library/src/main/java/com/google/android/exoplayer/text/SubtitleParserFactory.java

@@ -53,7 +53,7 @@ public interface SubtitleParserFactory {
    * <li>TX3G ({@link com.google.android.exoplayer.text.tx3g.Tx3gParser})</li>
    * </ul>
    */
-  final SubtitleParserFactory DEFAULT = new SubtitleParserFactory() {
+  SubtitleParserFactory DEFAULT = new SubtitleParserFactory() {
 
     @Override
     public boolean supportsFormat(Format format) {
@@ -68,7 +68,7 @@ public interface SubtitleParserFactory {
           throw new IllegalArgumentException("Attempted to create parser for unsupported format");
         }
         return clazz.asSubclass(SubtitleParser.class).newInstance();
-      } catch (InstantiationException | IllegalAccessException e) {
+      } catch (Exception e) {
         throw new IllegalStateException("Unexpected error instantiating parser", e);
       }
     }

library/src/main/java/com/google/android/exoplayer/text/TextTrackRenderer.java

@@ -140,11 +140,10 @@ public final class TextTrackRenderer extends TrackRenderer implements Callback {
     }
 
     boolean textRendererNeedsUpdate = false;
-    long subtitleNextEventTimeUs = Long.MAX_VALUE;
     if (subtitle != null) {
       // We're iterating through the events in a subtitle. Set textRendererNeedsUpdate if we
       // advance to the next event.
-      subtitleNextEventTimeUs = getNextEventTime();
+      long subtitleNextEventTimeUs = getNextEventTime();
       while (subtitleNextEventTimeUs <= positionUs) {
         nextSubtitleEventIndex++;
         subtitleNextEventTimeUs = getNextEventTime();

library/src/main/java/com/google/android/exoplayer/text/eia608/ClosedCaptionCtrl.java

@@ -18,38 +18,36 @@ package com.google.android.exoplayer.text.eia608;
 /* package */ final class ClosedCaptionCtrl extends ClosedCaption {
 
   /**
-   * The receipt of the {@link #RESUME_CAPTION_LOADING} command initiates pop-on style captioning.
-   * Subsequent data should be loaded into a non-displayed memory and held there until the
-   * {@link #END_OF_CAPTION} command is received, at which point the non-displayed memory becomes
-   * the displayed memory (and vice versa).
+   * Command initiating pop-on style captioning. Subsequent data should be loaded into a
+   * non-displayed memory and held there until the {@link #END_OF_CAPTION} command is received, at
+   * which point the non-displayed memory becomes the displayed memory (and vice versa).
    */
   public static final byte RESUME_CAPTION_LOADING = 0x20;
   /**
-   * The receipt of the {@link #ROLL_UP_CAPTIONS_2_ROWS} command initiates roll-up style
-   * captioning, with the maximum of 2 rows displayed simultaneously.
+   * Command initiating roll-up style captioning, with the maximum of 2 rows displayed
+   * simultaneously.
    */
   public static final byte ROLL_UP_CAPTIONS_2_ROWS = 0x25;
   /**
-   * The receipt of the {@link #ROLL_UP_CAPTIONS_3_ROWS} command initiates roll-up style
-   * captioning, with the maximum of 3 rows displayed simultaneously.
+   * Command initiating roll-up style captioning, with the maximum of 3 rows displayed
+   * simultaneously.
    */
   public static final byte ROLL_UP_CAPTIONS_3_ROWS = 0x26;
   /**
-   * The receipt of the {@link #ROLL_UP_CAPTIONS_4_ROWS} command initiates roll-up style
-   * captioning, with the maximum of 4 rows displayed simultaneously.
+   * Command initiating roll-up style captioning, with the maximum of 4 rows displayed
+   * simultaneously.
    */
   public static final byte ROLL_UP_CAPTIONS_4_ROWS = 0x27;
   /**
-   * The receipt of the {@link #RESUME_DIRECT_CAPTIONING} command initiates paint-on style
-   * captioning. Subsequent data should be addressed immediately to displayed memory without need
-   * for the {@link #RESUME_CAPTION_LOADING} command.
+   * Command initiating paint-on style captioning. Subsequent data should be addressed immediately
+   * to displayed memory without need for the {@link #RESUME_CAPTION_LOADING} command.
    */
   public static final byte RESUME_DIRECT_CAPTIONING = 0x29;
   /**
-   * The receipt of the {@link #END_OF_CAPTION} command indicates the end of pop-on style caption,
-   * at this point already loaded in non-displayed memory caption should become the displayed
-   * memory (and vice versa). If no {@link #RESUME_CAPTION_LOADING} command has been received,
-   * {@link #END_OF_CAPTION} command forces the receiver into pop-on style.
+   * Command indicating the end of a pop-on style caption. At this point the caption loaded in
+   * non-displayed memory should be swapped with the one in displayed memory. If no
+   * {@link #RESUME_CAPTION_LOADING} command has been received, this command forces the receiver
+   * into pop-on style.
    */
   public static final byte END_OF_CAPTION = 0x2F;
 

library/src/main/java/com/google/android/exoplayer/text/subrip/SubripSubtitle.java

@@ -58,20 +58,12 @@ import java.util.List;
     return cueTimesUs[index];
   }
 
-  @Override
-  public long getLastEventTime() {
-    if (getEventTimeCount() == 0) {
-      return -1;
-    }
-    return cueTimesUs[cueTimesUs.length - 1];
-  }
-
   @Override
   public List<Cue> getCues(long timeUs) {
     int index = Util.binarySearchFloor(cueTimesUs, timeUs, true, false);
     if (index == -1 || cues[index] == null) {
       // timeUs is earlier than the start of the first cue, or we have an empty cue.
-      return Collections.<Cue>emptyList();
+      return Collections.emptyList();
     } else {
       return Collections.singletonList(cues[index]);
     }

library/src/main/java/com/google/android/exoplayer/text/ttml/TtmlNode.java

@@ -74,7 +74,7 @@ import java.util.TreeSet;
   public final long startTimeUs;
   public final long endTimeUs;
   public final TtmlStyle style;
-  private String[] styleIds;
+  private final String[] styleIds;
 
   private List<TtmlNode> children;
   private int start;

library/src/main/java/com/google/android/exoplayer/text/ttml/TtmlParser.java

@@ -280,23 +280,29 @@ public final class TtmlParser extends SubtitleParser {
     for (int i = 0; i < attributeCount; i++) {
       String attr = ParserUtil.removeNamespacePrefix(parser.getAttributeName(i));
       String value = parser.getAttributeValue(i);
-      if (attr.equals(ATTR_BEGIN)) {
-        startTime = parseTimeExpression(value,
-            DEFAULT_FRAMERATE, DEFAULT_SUBFRAMERATE, DEFAULT_TICKRATE);
-      } else if (attr.equals(ATTR_END)) {
-        endTime = parseTimeExpression(value,
-            DEFAULT_FRAMERATE, DEFAULT_SUBFRAMERATE, DEFAULT_TICKRATE);
-      } else if (attr.equals(ATTR_DURATION)) {
-        duration = parseTimeExpression(value,
-            DEFAULT_FRAMERATE, DEFAULT_SUBFRAMERATE, DEFAULT_TICKRATE);
-      } else if (attr.equals(ATTR_STYLE)) {
-        // IDREFS: potentially multiple space delimited ids
-        String[] ids = parseStyleIds(value);
-        if (ids.length > 0) {
-          styleIds = ids;
-        }
-      } else {
-        // Do nothing.
+      switch (attr) {
+        case ATTR_BEGIN:
+          startTime = parseTimeExpression(value,
+              DEFAULT_FRAMERATE, DEFAULT_SUBFRAMERATE, DEFAULT_TICKRATE);
+          break;
+        case ATTR_END:
+          endTime = parseTimeExpression(value,
+              DEFAULT_FRAMERATE, DEFAULT_SUBFRAMERATE, DEFAULT_TICKRATE);
+          break;
+        case ATTR_DURATION:
+          duration = parseTimeExpression(value,
+              DEFAULT_FRAMERATE, DEFAULT_SUBFRAMERATE, DEFAULT_TICKRATE);
+          break;
+        case ATTR_STYLE:
+          // IDREFS: potentially multiple space delimited ids
+          String[] ids = parseStyleIds(value);
+          if (ids.length > 0) {
+            styleIds = ids;
+          }
+          break;
+        default:
+          // Do nothing.
+          break;
       }
     }
     if (parent != null && parent.startTimeUs != TtmlNode.UNDEFINED_TIME) {
@@ -320,7 +326,7 @@ public final class TtmlParser extends SubtitleParser {
   }
 
   private static boolean isSupportedTag(String tag) {
-    if (tag.equals(TtmlNode.TAG_TT)
+    return tag.equals(TtmlNode.TAG_TT)
         || tag.equals(TtmlNode.TAG_HEAD)
         || tag.equals(TtmlNode.TAG_BODY)
         || tag.equals(TtmlNode.TAG_DIV)
@@ -334,10 +340,7 @@ public final class TtmlParser extends SubtitleParser {
         || tag.equals(TtmlNode.TAG_METADATA)
         || tag.equals(TtmlNode.TAG_SMPTE_IMAGE)
         || tag.equals(TtmlNode.TAG_SMPTE_DATA)
-        || tag.equals(TtmlNode.TAG_SMPTE_INFORMATION)) {
-      return true;
-    }
-    return false;
+        || tag.equals(TtmlNode.TAG_SMPTE_INFORMATION);
   }
 
   private static void parseFontSize(String expression, TtmlStyle out) throws ParserException {
@@ -411,18 +414,25 @@ public final class TtmlParser extends SubtitleParser {
       String timeValue = matcher.group(1);
       double offsetSeconds = Double.parseDouble(timeValue);
       String unit = matcher.group(2);
-      if (unit.equals("h")) {
-        offsetSeconds *= 3600;
-      } else if (unit.equals("m")) {
-        offsetSeconds *= 60;
-      } else if (unit.equals("s")) {
-        // Do nothing.
-      } else if (unit.equals("ms")) {
-        offsetSeconds /= 1000;
-      } else if (unit.equals("f")) {
-        offsetSeconds /= frameRate;
-      } else if (unit.equals("t")) {
-        offsetSeconds /= tickRate;
+      switch (unit) {
+        case "h":
+          offsetSeconds *= 3600;
+          break;
+        case "m":
+          offsetSeconds *= 60;
+          break;
+        case "s":
+          // Do nothing.
+          break;
+        case "ms":
+          offsetSeconds /= 1000;
+          break;
+        case "f":
+          offsetSeconds /= frameRate;
+          break;
+        case "t":
+          offsetSeconds /= tickRate;
+          break;
       }
       return (long) (offsetSeconds * C.MICROS_PER_SECOND);
     }

library/src/main/java/com/google/android/exoplayer/text/ttml/TtmlSubtitle.java

@@ -55,11 +55,6 @@ public final class TtmlSubtitle implements Subtitle {
     return eventTimesUs[index];
   }
 
-  @Override
-  public long getLastEventTime() {
-    return (eventTimesUs.length == 0 ? -1 : eventTimesUs[eventTimesUs.length - 1]);
-  }
-
   /* @VisibleForTesting */
   /* package */ TtmlNode getRoot() {
     return root;
@@ -69,7 +64,7 @@ public final class TtmlSubtitle implements Subtitle {
   public List<Cue> getCues(long timeUs) {
     CharSequence cueText = root.getText(timeUs, globalStyles);
     if (cueText == null) {
-      return Collections.<Cue>emptyList();
+      return Collections.emptyList();
     } else {
       Cue cue = new Cue(cueText);
       return Collections.singletonList(cue);

library/src/main/java/com/google/android/exoplayer/text/tx3g/Tx3gSubtitle.java

@@ -49,11 +49,6 @@ import java.util.List;
     return 0;
   }
 
-  @Override
-  public long getLastEventTime() {
-    return 0;
-  }
-
   @Override
   public List<Cue> getCues(long timeUs) {
     return timeUs >= 0 ? cues : Collections.<Cue>emptyList();

library/src/main/java/com/google/android/exoplayer/text/webvtt/CssParser.java

@@ -286,10 +286,6 @@ import java.util.Map;
     return false;
   }
 
-  boolean commentEndsInPosition(byte[] data, int pos) {
-    return data[pos] == '/' && data[pos - 1] == '*';
-  }
-
   private static String parseIdentifier(ParsableByteArray input, StringBuilder stringBuilder) {
     stringBuilder.setLength(0);
     int position = input.getPosition();

library/src/main/java/com/google/android/exoplayer/text/webvtt/Mp4WebvttSubtitle.java

@@ -49,11 +49,6 @@ import java.util.List;
     return 0;
   }
 
-  @Override
-  public long getLastEventTime() {
-    return 0;
-  }
-
   @Override
   public List<Cue> getCues(long timeUs) {
     return timeUs >= 0 ? cues : Collections.<Cue>emptyList();

library/src/main/java/com/google/android/exoplayer/text/webvtt/WebvttSubtitle.java

@@ -72,14 +72,6 @@ public final class WebvttSubtitle implements Subtitle {
     return sortedCueTimesUs[index];
   }
 
-  @Override
-  public long getLastEventTime() {
-    if (getEventTimeCount() == 0) {
-      return -1;
-    }
-    return sortedCueTimesUs[sortedCueTimesUs.length - 1];
-  }
-
   @Override
   public List<Cue> getCues(long timeUs) {
     ArrayList<Cue> list = null;
@@ -120,7 +112,7 @@ public final class WebvttSubtitle implements Subtitle {
     if (list != null) {
       return list;
     } else {
-      return Collections.<Cue>emptyList();
+      return Collections.emptyList();
     }
   }
 

library/src/main/java/com/google/android/exoplayer/upstream/AssetDataSource.java

@@ -110,7 +110,7 @@ public final class AssetDataSource implements DataSource {
     if (bytesRemaining == 0) {
       return C.RESULT_END_OF_INPUT;
     } else {
-      int bytesRead = 0;
+      int bytesRead;
       try {
         int bytesToRead = bytesRemaining == C.LENGTH_UNBOUNDED ? readLength
             : (int) Math.min(bytesRemaining, readLength);

library/src/main/java/com/google/android/exoplayer/upstream/BandwidthMeter.java

@@ -23,7 +23,7 @@ public interface BandwidthMeter extends TransferListener {
   /**
    * Interface definition for a callback to be notified of {@link BandwidthMeter} events.
    */
-  public interface EventListener {
+  interface EventListener {
 
     /**
      * Invoked periodically to indicate that bytes have been transferred.
@@ -40,7 +40,7 @@ public interface BandwidthMeter extends TransferListener {
   /**
    * Indicates no bandwidth estimate is available.
    */
-  final long NO_ESTIMATE = -1;
+  long NO_ESTIMATE = -1;
 
   /**
    * Gets the estimated bandwidth, in bits/sec.

library/src/main/java/com/google/android/exoplayer/upstream/ContentDataSource.java

@@ -108,7 +108,7 @@ public final class ContentDataSource implements DataSource {
     if (bytesRemaining == 0) {
       return C.RESULT_END_OF_INPUT;
     } else {
-      int bytesRead = 0;
+      int bytesRead;
       try {
         int bytesToRead = bytesRemaining == C.LENGTH_UNBOUNDED ? readLength
             : (int) Math.min(bytesRemaining, readLength);

library/src/main/java/com/google/android/exoplayer/upstream/DataSink.java

@@ -23,21 +23,20 @@ import java.io.IOException;
 public interface DataSink {
 
   /**
-   * Opens the {@link DataSink} to consume the specified data. Calls to {@link #open(DataSpec)} and
-   * {@link #close()} must be balanced.
+   * Opens the {@link DataSink} to consume the specified data.
    *
    * @param dataSpec Defines the data to be consumed.
    * @return This {@link DataSink}, for convenience.
    * @throws IOException
    */
-  public DataSink open(DataSpec dataSpec) throws IOException;
+  DataSink open(DataSpec dataSpec) throws IOException;
 
   /**
    * Closes the {@link DataSink}.
    *
    * @throws IOException
    */
-  public void close() throws IOException;
+  void close() throws IOException;
 
   /**
    * Consumes the provided data.
@@ -47,6 +46,6 @@ public interface DataSink {
    * @param length The length of the data to consume, in bytes.
    * @throws IOException
    */
-  public void write(byte[] buffer, int offset, int length) throws IOException;
+  void write(byte[] buffer, int offset, int length) throws IOException;
 
 }

library/src/main/java/com/google/android/exoplayer/upstream/DataSource.java

@@ -27,13 +27,11 @@ import java.io.IOException;
 public interface DataSource {
 
   /**
-   * Opens the {@link DataSource} to read the specified data. Calls to {@link #open(DataSpec)} and
-   * {@link #close()} must be balanced.
+   * Opens the {@link DataSource} to read the specified data.
    * <p>
-   * Note: If {@link #open(DataSpec)} throws an {@link IOException}, callers must still call
-   * {@link #close()} to ensure that any partial effects of the {@link #open(DataSpec)} invocation
-   * are cleaned up. Implementations of this class can assume that callers will call
-   * {@link #close()} in this case.
+   * Note: If an {@link IOException} is thrown, callers must still call {@link #close()} to ensure
+   * that any partial effects of the invocation are cleaned up. Implementations of this class can
+   * assume that callers will call {@link #close()} in this case.
    *
    * @param dataSpec Defines the data to be read.
    * @throws IOException If an error occurs opening the source.

library/src/main/java/com/google/android/exoplayer/upstream/DefaultHttpDataSource.java

@@ -339,9 +339,7 @@ public class DefaultHttpDataSource implements HttpDataSource {
     if (!allowCrossProtocolRedirects) {
       // HttpURLConnection disallows cross-protocol redirects, but otherwise performs redirection
       // automatically. This is the behavior we want, so use it.
-      HttpURLConnection connection = makeConnection(
-          url, postBody, position, length, allowGzip, true /* followRedirects */);
-      return connection;
+      return makeConnection(url, postBody, position, length, allowGzip, true /* followRedirects */);
     }
 
     // We need to handle redirects ourselves to allow cross-protocol redirects.

library/src/main/java/com/google/android/exoplayer/upstream/FileDataSource.java

@@ -90,7 +90,7 @@ public final class FileDataSource implements DataSource {
     if (bytesRemaining == 0) {
       return C.RESULT_END_OF_INPUT;
     } else {
-      int bytesRead = 0;
+      int bytesRead;
       try {
         bytesRead = file.read(buffer, offset, (int) Math.min(bytesRemaining, readLength));
       } catch (IOException e) {

library/src/main/java/com/google/android/exoplayer/upstream/HttpDataSource.java

@@ -32,7 +32,7 @@ public interface HttpDataSource extends DataSource {
   /**
    * A {@link Predicate} that rejects content types often used for pay-walls.
    */
-  public static final Predicate<String> REJECT_PAYWALL_TYPES = new Predicate<String>() {
+  Predicate<String> REJECT_PAYWALL_TYPES = new Predicate<String>() {
 
     @Override
     public boolean evaluate(String contentType) {
@@ -47,7 +47,7 @@ public interface HttpDataSource extends DataSource {
   /**
    * Thrown when an error is encountered when trying to read from a {@link HttpDataSource}.
    */
-  public static class HttpDataSourceException extends IOException {
+  class HttpDataSourceException extends IOException {
 
     /*
      * The {@link DataSpec} associated with the current connection.
@@ -79,7 +79,7 @@ public interface HttpDataSource extends DataSource {
   /**
    * Thrown when the content type is invalid.
    */
-  public static final class InvalidContentTypeException extends HttpDataSourceException {
+  final class InvalidContentTypeException extends HttpDataSourceException {
 
     public final String contentType;
 
@@ -93,7 +93,7 @@ public interface HttpDataSource extends DataSource {
   /**
    * Thrown when an attempt to open a connection results in a response code not in the 2xx range.
    */
-  public static final class InvalidResponseCodeException extends HttpDataSourceException {
+  final class InvalidResponseCodeException extends HttpDataSourceException {
 
     /**
      * The response code that was outside of the 2xx range.

library/src/main/java/com/google/android/exoplayer/upstream/UdpDataSource.java

@@ -37,10 +37,6 @@ public final class UdpDataSource implements DataSource {
    */
   public static final class UdpDataSourceException extends IOException {
 
-    public UdpDataSourceException(String message) {
-      super(message);
-    }
-
     public UdpDataSourceException(IOException cause) {
       super(cause);
     }
@@ -58,8 +54,9 @@ public final class UdpDataSource implements DataSource {
   public static final int DEAFULT_SOCKET_TIMEOUT_MILLIS = 8 * 1000;
 
   private final TransferListener listener;
-  private final DatagramPacket packet;
   private final int socketTimeoutMillis;
+  private final byte[] packetBuffer;
+  private final DatagramPacket packet;
 
   private Uri uri;
   private DatagramSocket socket;
@@ -68,7 +65,6 @@ public final class UdpDataSource implements DataSource {
   private InetSocketAddress socketAddress;
   private boolean opened;
 
-  private byte[] packetBuffer;
   private int packetRemaining;
 
   /**

library/src/main/java/com/google/android/exoplayer/upstream/UriLoadable.java

@@ -44,7 +44,7 @@ public final class UriLoadable<T> implements Loadable {
      * @throws ParserException If an error occurs parsing the data.
      * @throws IOException If an error occurs reading data from the stream.
      */
-    T parse(Uri uri, InputStream inputStream) throws ParserException, IOException;
+    T parse(Uri uri, InputStream inputStream) throws IOException;
 
   }
 

library/src/main/java/com/google/android/exoplayer/upstream/cache/Cache.java

@@ -27,7 +27,7 @@ public interface Cache {
   /**
    * Interface definition for a callback to be notified of {@link Cache} events.
    */
-  public interface Listener {
+  interface Listener {
 
     /**
      * Invoked when a {@link CacheSpan} is added to the cache.

library/src/main/java/com/google/android/exoplayer/upstream/cache/SimpleCache.java

@@ -359,9 +359,7 @@ public final class SimpleCache implements Cache {
       // floorSpan covers the queried region.
       return true;
     }
-    Iterator<CacheSpan> iterator = entries.tailSet(floorSpan, false).iterator();
-    while (iterator.hasNext()) {
-      CacheSpan next = iterator.next();
+    for (CacheSpan next : entries.tailSet(floorSpan, false)) {
       if (next.position > currentEndPosition) {
         // There's a hole in the cache within the queried region.
         return false;

library/src/main/java/com/google/android/exoplayer/util/CodecSpecificDataUtil.java

@@ -67,8 +67,6 @@ public final class CodecSpecificDataUtil {
         AUDIO_SPECIFIC_CONFIG_CHANNEL_CONFIGURATION_INVALID
       };
 
-  // Advanced Audio Coding Low-Complexity profile.
-  private static final int AUDIO_OBJECT_TYPE_AAC_LC = 2;
   // Spectral Band Replication.
   private static final int AUDIO_OBJECT_TYPE_SBR = 5;
   // Error Resilient Bit-Sliced Arithmetic Coding.
@@ -136,33 +134,6 @@ public final class CodecSpecificDataUtil {
     return audioSpecificConfig;
   }
 
-  /**
-   * Builds a simple HE-AAC LC AudioSpecificConfig, as defined in ISO 14496-3 1.6.2.1
-   *
-   * @param sampleRate The sample rate in Hz.
-   * @param numChannels The number of channels.
-   * @return The AudioSpecificConfig.
-   */
-  public static byte[] buildAacAudioSpecificConfig(int sampleRate, int numChannels) {
-    int sampleRateIndex = -1;
-    for (int i = 0; i < AUDIO_SPECIFIC_CONFIG_SAMPLING_RATE_TABLE.length; ++i) {
-      if (sampleRate == AUDIO_SPECIFIC_CONFIG_SAMPLING_RATE_TABLE[i]) {
-        sampleRateIndex = i;
-      }
-    }
-    int channelConfig = -1;
-    for (int i = 0; i < AUDIO_SPECIFIC_CONFIG_CHANNEL_COUNT_TABLE.length; ++i) {
-      if (numChannels == AUDIO_SPECIFIC_CONFIG_CHANNEL_COUNT_TABLE[i]) {
-        channelConfig = i;
-      }
-    }
-    // The full specification for AudioSpecificConfig is stated in ISO 14496-3 Section 1.6.2.1
-    byte[] csd = new byte[2];
-    csd[0] = (byte) ((AUDIO_OBJECT_TYPE_AAC_LC << 3) | (sampleRateIndex >> 1));
-    csd[1] = (byte) (((sampleRateIndex & 0x1) << 7) | (channelConfig << 3));
-    return csd;
-  }
-
   /**
    * Constructs a NAL unit consisting of the NAL start code followed by the specified data.
    *

library/src/main/java/com/google/android/exoplayer/util/ManifestFetcher.java

@@ -47,11 +47,11 @@ public class ManifestFetcher<T> implements Loader.Callback {
    */
   public interface EventListener {
 
-    public void onManifestRefreshStarted();
+    void onManifestRefreshStarted();
 
-    public void onManifestRefreshed();
+    void onManifestRefreshed();
 
-    public void onManifestError(IOException e);
+    void onManifestError(IOException e);
 
   }
 
@@ -65,7 +65,7 @@ public class ManifestFetcher<T> implements Loader.Callback {
      * Returns the {@link Uri} from which subsequent manifests should be requested, or null to
      * continue using the current {@link Uri}.
      */
-    public Uri getNextManifestUri();
+    Uri getNextManifestUri();
 
   }
 

library/src/main/java/com/google/android/exoplayer/util/UriUtil.java

@@ -163,7 +163,7 @@ public final class UriUtil {
     int segmentStart = offset;
     int i = offset;
     while (i <= limit) {
-      int nextSegmentStart = -1;
+      int nextSegmentStart;
       if (i == limit) {
         nextSegmentStart = i;
       } else if (uri.charAt(i) == '/') {

library/src/main/java/com/google/android/exoplayer/util/Util.java

@@ -384,20 +384,6 @@ public final class Util {
     return stayInBounds ? Math.min(list.size() - 1, index) : index;
   }
 
-  /**
-   * Creates an integer array containing the integers from 0 to {@code length - 1}.
-   *
-   * @param length The length of the array.
-   * @return The array.
-   */
-  public static int[] firstIntegersArray(int length) {
-    int[] firstIntegers = new int[length];
-    for (int i = 0; i < length; i++) {
-      firstIntegers[i] = i;
-    }
-    return firstIntegers;
-  }
-
   /**
    * Parses an xs:duration attribute value, returning the parsed duration in milliseconds.
    *
@@ -876,8 +862,8 @@ public final class Util {
    * <p>See {@link #escapeFileName(String)} for more information.
    *
    * @param fileName File name to be unescaped.
-   * @return The original value of the file name before it was escaped,
-   *    or null if the escaped fileName seems invalid.
+   * @return The original value of the file name before it was escaped, or null if the escaped
+   *     fileName seems invalid.
    */
   public static String unescapeFileName(String fileName) {
     int length = fileName.length();