Plumb PlayerId to renderers.

We can rename the existing setIndex method to a more generic init
as this method is only called by EPII and implemented by BaseRenderer
anyway.

PiperOrigin-RevId: 408616055

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/BaseRenderer.java

@@ -15,6 +15,7 @@
  */
 package androidx.media3.exoplayer;
 
+import static androidx.media3.common.util.Assertions.checkNotNull;
 import static java.lang.Math.max;
 
 import androidx.annotation.Nullable;
@@ -25,10 +26,12 @@ import androidx.media3.common.util.Assertions;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.decoder.DecoderInputBuffer;
 import androidx.media3.decoder.DecoderInputBuffer.InsufficientCapacityException;
+import androidx.media3.exoplayer.analytics.PlayerId;
 import androidx.media3.exoplayer.source.SampleStream;
 import androidx.media3.exoplayer.source.SampleStream.ReadDataResult;
 import androidx.media3.exoplayer.source.SampleStream.ReadFlags;
 import java.io.IOException;
+import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
 
 /** An abstract base class suitable for most {@link Renderer} implementations. */
 @UnstableApi
@@ -39,6 +42,7 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
 
   @Nullable private RendererConfiguration configuration;
   private int index;
+  private @MonotonicNonNull PlayerId playerId;
   private int state;
   @Nullable private SampleStream stream;
   @Nullable private Format[] streamFormats;
@@ -69,8 +73,9 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
   }
 
   @Override
-  public final void setIndex(int index) {
+  public final void init(int index, PlayerId playerId) {
     this.index = index;
+    this.playerId = playerId;
   }
 
   @Override
@@ -332,11 +337,24 @@ public abstract class BaseRenderer implements Renderer, RendererCapabilities {
     return Assertions.checkNotNull(configuration);
   }
 
-  /** Returns the index of the renderer within the player. */
+  /**
+   * Returns the index of the renderer within the player.
+   *
+   * <p>Must only be used after the renderer has been initialized by the player.
+   */
   protected final int getIndex() {
     return index;
   }
 
+  /**
+   * Returns the {@link PlayerId} of the player using this renderer.
+   *
+   * <p>Must only be used after the renderer has been initialized by the player.
+   */
+  protected final PlayerId getPlayerId() {
+    return checkNotNull(playerId);
+  }
+
   /**
    * Creates an {@link ExoPlaybackException} of type {@link ExoPlaybackException#TYPE_RENDERER} for
    * this renderer.

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/ExoPlayerImpl.java

@@ -22,6 +22,7 @@ import static java.lang.Math.max;
 import static java.lang.Math.min;
 
 import android.annotation.SuppressLint;
+import android.media.metrics.LogSessionId;
 import android.os.Handler;
 import android.os.Looper;
 import android.util.Pair;
@@ -30,6 +31,7 @@ import android.view.SurfaceHolder;
 import android.view.SurfaceView;
 import android.view.TextureView;
 import androidx.annotation.Nullable;
+import androidx.annotation.RequiresApi;
 import androidx.media3.common.AudioAttributes;
 import androidx.media3.common.BasePlayer;
 import androidx.media3.common.C;
@@ -60,6 +62,7 @@ import androidx.media3.common.util.Util;
 import androidx.media3.exoplayer.ExoPlayer.AudioOffloadListener;
 import androidx.media3.exoplayer.PlayerMessage.Target;
 import androidx.media3.exoplayer.analytics.AnalyticsCollector;
+import androidx.media3.exoplayer.analytics.PlayerId;
 import androidx.media3.exoplayer.source.MediaSource;
 import androidx.media3.exoplayer.source.MediaSource.MediaPeriodId;
 import androidx.media3.exoplayer.source.MediaSourceFactory;
@@ -259,6 +262,7 @@ import java.util.concurrent.CopyOnWriteArraySet;
       addListener(analyticsCollector);
       bandwidthMeter.addEventListener(new Handler(applicationLooper), analyticsCollector);
     }
+    PlayerId playerId = Util.SDK_INT < 31 ? new PlayerId() : Api31.createPlayerId();
     internalPlayer =
         new ExoPlayerImplInternal(
             renderers,
@@ -275,7 +279,8 @@ import java.util.concurrent.CopyOnWriteArraySet;
             pauseAtEndOfMediaItems,
             applicationLooper,
             clock,
-            playbackInfoUpdateListener);
+            playbackInfoUpdateListener,
+            playerId);
   }
 
   /**
@@ -1869,4 +1874,14 @@ import java.util.concurrent.CopyOnWriteArraySet;
       return timeline;
     }
   }
+
+  @RequiresApi(31)
+  private static final class Api31 {
+    private Api31() {}
+
+    public static PlayerId createPlayerId() {
+      // TODO: Create a MediaMetricsListener and obtain LogSessionId from it.
+      return new PlayerId(LogSessionId.LOG_SESSION_ID_NONE);
+    }
+  }
 }

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/ExoPlayerImplInternal.java

@@ -52,6 +52,7 @@ import androidx.media3.common.util.Util;
 import androidx.media3.datasource.DataSourceException;
 import androidx.media3.exoplayer.DefaultMediaClock.PlaybackParametersListener;
 import androidx.media3.exoplayer.analytics.AnalyticsCollector;
+import androidx.media3.exoplayer.analytics.PlayerId;
 import androidx.media3.exoplayer.drm.DrmSession;
 import androidx.media3.exoplayer.source.BehindLiveWindowException;
 import androidx.media3.exoplayer.source.MediaPeriod;
@@ -237,7 +238,8 @@ import java.util.concurrent.atomic.AtomicBoolean;
       boolean pauseAtEndOfWindow,
       Looper applicationLooper,
       Clock clock,
-      PlaybackInfoUpdateListener playbackInfoUpdateListener) {
+      PlaybackInfoUpdateListener playbackInfoUpdateListener,
+      PlayerId playerId) {
     this.playbackInfoUpdateListener = playbackInfoUpdateListener;
     this.renderers = renderers;
     this.trackSelector = trackSelector;
@@ -260,7 +262,7 @@ import java.util.concurrent.atomic.AtomicBoolean;
     playbackInfoUpdate = new PlaybackInfoUpdate(playbackInfo);
     rendererCapabilities = new RendererCapabilities[renderers.length];
     for (int i = 0; i < renderers.length; i++) {
-      renderers[i].setIndex(i);
+      renderers[i].init(/* index= */ i, playerId);
       rendererCapabilities[i] = renderers[i].getCapabilities();
     }
     mediaClock = new DefaultMediaClock(this, clock);

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/NoSampleRenderer.java

@@ -20,6 +20,7 @@ import androidx.media3.common.C;
 import androidx.media3.common.Format;
 import androidx.media3.common.util.Assertions;
 import androidx.media3.common.util.UnstableApi;
+import androidx.media3.exoplayer.analytics.PlayerId;
 import androidx.media3.exoplayer.source.SampleStream;
 import java.io.IOException;
 import org.checkerframework.checker.nullness.qual.MonotonicNonNull;
@@ -48,7 +49,7 @@ public abstract class NoSampleRenderer implements Renderer, RendererCapabilities
   }
 
   @Override
-  public final void setIndex(int index) {
+  public final void init(int index, PlayerId playerId) {
     this.index = index;
   }
 

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/Renderer.java

@@ -27,6 +27,7 @@ import androidx.media3.common.Player;
 import androidx.media3.common.util.UnstableApi;
 import androidx.media3.common.util.Util;
 import androidx.media3.exoplayer.PlayerMessage.Target;
+import androidx.media3.exoplayer.analytics.PlayerId;
 import androidx.media3.exoplayer.source.SampleStream;
 import androidx.media3.exoplayer.video.VideoDecoderOutputBufferRenderer;
 import androidx.media3.exoplayer.video.VideoFrameMetadataListener;
@@ -252,11 +253,12 @@ public interface Renderer extends PlayerMessage.Target {
   RendererCapabilities getCapabilities();
 
   /**
-   * Sets the index of this renderer within the player.
+   * Initializes the renderer for playback with a player.
    *
-   * @param index The renderer index.
+   * @param index The renderer index within the player.
+   * @param playerId The {@link PlayerId} of the player.
    */
-  void setIndex(int index);
+  void init(int index, PlayerId playerId);
 
   /**
    * If the renderer advances its own playback position then this method returns a corresponding