Allow module registrations + log player release

-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=162223981

extensions/cronet/src/main/java/com/google/android/exoplayer2/ext/cronet/CronetDataSource.java

@@ -20,6 +20,7 @@ import android.os.ConditionVariable;
 import android.text.TextUtils;
 import android.util.Log;
 import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.upstream.DataSourceException;
 import com.google.android.exoplayer2.upstream.DataSpec;
 import com.google.android.exoplayer2.upstream.HttpDataSource;
@@ -74,6 +75,10 @@ public class CronetDataSource extends UrlRequest.Callback implements HttpDataSou
 
   }
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.cronet");
+  }
+
   /**
    * The default connection timeout, in milliseconds.
    */

extensions/ffmpeg/src/main/java/com/google/android/exoplayer2/ext/ffmpeg/FfmpegLibrary.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.ext.ffmpeg;
 
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.util.LibraryLoader;
 import com.google.android.exoplayer2.util.MimeTypes;
 
@@ -23,6 +24,10 @@ import com.google.android.exoplayer2.util.MimeTypes;
  */
 public final class FfmpegLibrary {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.ffmpeg");
+  }
+
   private static final LibraryLoader LOADER =
       new LibraryLoader("avutil", "avresample", "avcodec", "ffmpeg");
 

extensions/flac/src/main/java/com/google/android/exoplayer2/ext/flac/FlacLibrary.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.ext.flac;
 
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.util.LibraryLoader;
 
 /**
@@ -22,6 +23,10 @@ import com.google.android.exoplayer2.util.LibraryLoader;
  */
 public final class FlacLibrary {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.flac");
+  }
+
   private static final LibraryLoader LOADER = new LibraryLoader("flacJNI");
 
   private FlacLibrary() {}

extensions/gvr/src/main/java/com/google/android/exoplayer2/ext/gvr/GvrAudioProcessor.java

@@ -16,6 +16,7 @@
 package com.google.android.exoplayer2.ext.gvr;
 
 import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.Format;
 import com.google.android.exoplayer2.audio.AudioProcessor;
 import com.google.vr.sdk.audio.GvrAudioSurround;
@@ -28,6 +29,10 @@ import java.nio.ByteOrder;
  */
 public final class GvrAudioProcessor implements AudioProcessor {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.gvr");
+  }
+
   private static final int FRAMES_PER_OUTPUT_BUFFER = 1024;
   private static final int OUTPUT_CHANNEL_COUNT = 2;
   private static final int OUTPUT_FRAME_SIZE = OUTPUT_CHANNEL_COUNT * 2; // 16-bit stereo output.

extensions/ima/src/main/java/com/google/android/exoplayer2/ext/ima/ImaAdsLoader.java

@@ -57,9 +57,6 @@ import java.util.List;
 public final class ImaAdsLoader implements ExoPlayer.EventListener, VideoAdPlayer,
     ContentProgressProvider, AdErrorListener, AdsLoadedListener, AdEventListener {
 
-  private static final boolean DEBUG = false;
-  private static final String TAG = "ImaAdsLoader";
-
   /**
    * Listener for ad loader events. All methods are called on the main thread.
    */
@@ -81,6 +78,13 @@ public final class ImaAdsLoader implements ExoPlayer.EventListener, VideoAdPlaye
 
   }
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.ima");
+  }
+
+  private static final boolean DEBUG = false;
+  private static final String TAG = "ImaAdsLoader";
+
   /**
    * Whether to enable preloading of ads in {@link AdsRenderingSettings}.
    */

extensions/okhttp/src/main/java/com/google/android/exoplayer2/ext/okhttp/OkHttpDataSource.java

@@ -19,6 +19,7 @@ import android.net.Uri;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.upstream.DataSourceException;
 import com.google.android.exoplayer2.upstream.DataSpec;
 import com.google.android.exoplayer2.upstream.HttpDataSource;
@@ -45,6 +46,10 @@ import okhttp3.Response;
  */
 public class OkHttpDataSource implements HttpDataSource {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.okhttp");
+  }
+
   private static final AtomicReference<byte[]> skipBufferReference = new AtomicReference<>();
 
   @NonNull private final Call.Factory callFactory;

extensions/opus/src/main/java/com/google/android/exoplayer2/ext/opus/OpusLibrary.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.ext.opus;
 
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.util.LibraryLoader;
 
 /**
@@ -22,6 +23,10 @@ import com.google.android.exoplayer2.util.LibraryLoader;
  */
 public final class OpusLibrary {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.opus");
+  }
+
   private static final LibraryLoader LOADER = new LibraryLoader("opus", "opusJNI");
 
   private OpusLibrary() {}

extensions/rtmp/src/main/java/com/google/android/exoplayer2/ext/rtmp/RtmpDataSource.java

@@ -18,6 +18,7 @@ package com.google.android.exoplayer2.ext.rtmp;
 import android.net.Uri;
 import android.support.annotation.Nullable;
 import com.google.android.exoplayer2.C;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.DataSpec;
 import com.google.android.exoplayer2.upstream.TransferListener;
@@ -30,6 +31,10 @@ import net.butterflytv.rtmp_client.RtmpClient.RtmpIOException;
  */
 public final class RtmpDataSource implements DataSource {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.rtmp");
+  }
+
   @Nullable private final TransferListener<? super RtmpDataSource> listener;
 
   private RtmpClient rtmpClient;

extensions/vp9/src/main/java/com/google/android/exoplayer2/ext/vp9/VpxLibrary.java

@@ -15,6 +15,7 @@
  */
 package com.google.android.exoplayer2.ext.vp9;
 
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.util.LibraryLoader;
 
 /**
@@ -22,6 +23,10 @@ import com.google.android.exoplayer2.util.LibraryLoader;
  */
 public final class VpxLibrary {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.vpx");
+  }
+
   private static final LibraryLoader LOADER = new LibraryLoader("vpx", "vpxJNI");
 
   private VpxLibrary() {}
@@ -70,4 +75,5 @@ public final class VpxLibrary {
   private static native String vpxGetVersion();
   private static native String vpxGetBuildConfig();
   public static native boolean vpxIsSecureDecodeSupported();
+
 }

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerImpl.java

@@ -80,7 +80,8 @@ import java.util.concurrent.CopyOnWriteArraySet;
    */
   @SuppressLint("HandlerLeak")
   public ExoPlayerImpl(Renderer[] renderers, TrackSelector trackSelector, LoadControl loadControl) {
-    Log.i(TAG, "Init " + ExoPlayerLibraryInfo.VERSION_SLASHY + " [" + Util.DEVICE_DEBUG_INFO + "]");
+    Log.i(TAG, "Init " + Integer.toHexString(System.identityHashCode(this)) + " ["
+        + ExoPlayerLibraryInfo.VERSION_SLASHY + "] [" + Util.DEVICE_DEBUG_INFO + "]");
     Assertions.checkState(renderers.length > 0);
     this.renderers = Assertions.checkNotNull(renderers);
     this.trackSelector = Assertions.checkNotNull(trackSelector);
@@ -263,6 +264,9 @@ import java.util.concurrent.CopyOnWriteArraySet;
 
   @Override
   public void release() {
+    Log.i(TAG, "Release " + Integer.toHexString(System.identityHashCode(this)) + " ["
+        + ExoPlayerLibraryInfo.VERSION_SLASHY + "] [" + Util.DEVICE_DEBUG_INFO + "] ["
+        + ExoPlayerLibraryInfo.registeredModules() + "]");
     internalPlayer.release();
     eventHandler.removeCallbacksAndMessages(null);
   }

library/core/src/main/java/com/google/android/exoplayer2/ExoPlayerLibraryInfo.java

@@ -15,22 +15,29 @@
  */
 package com.google.android.exoplayer2;
 
+import java.util.HashSet;
+
 /**
  * Information about the ExoPlayer library.
  */
-public interface ExoPlayerLibraryInfo {
+public final class ExoPlayerLibraryInfo {
+
+  /**
+   * A tag to use when logging library information.
+   */
+  public static final String TAG = "ExoPlayer";
 
   /**
    * The version of the library expressed as a string, for example "1.2.3".
    */
   // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION_INT) or vice versa.
-  String VERSION = "2.4.3";
+  public static final String VERSION = "2.4.3";
 
   /**
    * The version of the library expressed as {@code "ExoPlayerLib/" + VERSION}.
    */
   // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa.
-  String VERSION_SLASHY = "ExoPlayerLib/2.4.3";
+  public static final String VERSION_SLASHY = "ExoPlayerLib/2.4.3";
 
   /**
    * The version of the library expressed as an integer, for example 1002003.
@@ -40,18 +47,41 @@ public interface ExoPlayerLibraryInfo {
    * integer version 123045006 (123-045-006).
    */
   // Intentionally hardcoded. Do not derive from other constants (e.g. VERSION) or vice versa.
-  int VERSION_INT = 2004003;
+  public static final int VERSION_INT = 2004003;
 
   /**
    * Whether the library was compiled with {@link com.google.android.exoplayer2.util.Assertions}
    * checks enabled.
    */
-  boolean ASSERTIONS_ENABLED = true;
+  public static final boolean ASSERTIONS_ENABLED = true;
 
   /**
    * Whether the library was compiled with {@link com.google.android.exoplayer2.util.TraceUtil}
    * trace enabled.
    */
-  boolean TRACE_ENABLED = true;
+  public static final boolean TRACE_ENABLED = true;
+
+  private static final HashSet<String> registeredModules = new HashSet<>();
+  private static String registeredModulesString = "goog.exo.core";
+
+  private ExoPlayerLibraryInfo() {} // Prevents instantiation.
+
+  /**
+   * Returns a string consisting of registered module names separated by ", ".
+   */
+  public static synchronized String registeredModules() {
+    return registeredModulesString;
+  }
+
+  /**
+   * Registers a module to be returned in the {@link #registeredModules()} string.
+   *
+   * @param name The name of the module being registered.
+   */
+  public static synchronized void registerModule(String name) {
+    if (registeredModules.add(name)) {
+      registeredModulesString = registeredModulesString + ", " + name;
+    }
+  }
 
 }

library/dash/src/main/java/com/google/android/exoplayer2/source/dash/DashMediaSource.java

@@ -22,6 +22,7 @@ import android.util.Log;
 import android.util.SparseArray;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.ParserException;
 import com.google.android.exoplayer2.Timeline;
 import com.google.android.exoplayer2.source.AdaptiveMediaSourceEventListener;
@@ -52,6 +53,10 @@ import java.util.TimeZone;
  */
 public final class DashMediaSource implements MediaSource {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.dash");
+  }
+
   /**
    * The default minimum number of times to retry loading data prior to failing.
    */

library/hls/src/main/java/com/google/android/exoplayer2/source/hls/HlsMediaSource.java

@@ -19,6 +19,7 @@ import android.net.Uri;
 import android.os.Handler;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.source.AdaptiveMediaSourceEventListener;
 import com.google.android.exoplayer2.source.AdaptiveMediaSourceEventListener.EventDispatcher;
 import com.google.android.exoplayer2.source.MediaPeriod;
@@ -38,6 +39,10 @@ import java.util.List;
 public final class HlsMediaSource implements MediaSource,
     HlsPlaylistTracker.PrimaryPlaylistListener {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.hls");
+  }
+
   /**
    * The default minimum number of times to retry loading data prior to failing.
    */

library/smoothstreaming/src/main/java/com/google/android/exoplayer2/source/smoothstreaming/SsMediaSource.java

@@ -20,6 +20,7 @@ import android.os.Handler;
 import android.os.SystemClock;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.ParserException;
 import com.google.android.exoplayer2.Timeline;
 import com.google.android.exoplayer2.source.AdaptiveMediaSourceEventListener;
@@ -46,6 +47,10 @@ import java.util.ArrayList;
 public final class SsMediaSource implements MediaSource,
     Loader.Callback<ParsingLoadable<SsManifest>> {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.smoothstreaming");
+  }
+
   /**
    * The default minimum number of times to retry loading data prior to failing.
    */

library/ui/src/main/java/com/google/android/exoplayer2/ui/PlaybackControlView.java

@@ -33,6 +33,7 @@ import android.widget.TextView;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlaybackException;
 import com.google.android.exoplayer2.ExoPlayer;
+import com.google.android.exoplayer2.ExoPlayerLibraryInfo;
 import com.google.android.exoplayer2.PlaybackParameters;
 import com.google.android.exoplayer2.Timeline;
 import com.google.android.exoplayer2.source.TrackGroupArray;
@@ -165,6 +166,10 @@ import java.util.Locale;
  */
 public class PlaybackControlView extends FrameLayout {
 
+  static {
+    ExoPlayerLibraryInfo.registerModule("goog.exo.ui");
+  }
+
   /**
    * Listener to be notified about changes of the visibility of the UI control.
    */