Rollback of 9961d918a9

*** Original commit ***

Rollback of 8d9c4f4774

*** Original commit ***

Rollback of 43b796b64d

*** Original commit ***

Rollback of 08c5b1cb0a

*** Original commit ***

PiperOrigin-RevId: 430905772

RELEASENOTES.md

@@ -2,6 +2,16 @@
 
 ### dev-v2 (not yet released)
 
+*   Core library:
+    *   Enable support for Android platform diagnostics via
+        `MediaMetricsManager`. ExoPlayer will forward playback events and
+        performance data to the platform, which helps to provide system
+        performance and debugging information on the device. This data may also
+        be collected by Google
+        [if sharing usage and diagnostics data is enabled](https://support.google.com/accounts/answer/6078260)
+        by the user of the device. Apps can opt-out of contributing to platform
+        diagnostics for ExoPlayer with
+        `ExoPlayer.Builder.setUsePlatformDiagnostics(false)`.
 *   Track selection:
     *   Flatten `TrackSelectionOverrides` class into `TrackSelectionParameters`,
         and promote `TrackSelectionOverride` to a top level class.

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

@@ -458,6 +458,7 @@ public interface ExoPlayer extends Player {
     /* package */ long releaseTimeoutMs;
     /* package */ long detachSurfaceTimeoutMs;
     /* package */ boolean pauseAtEndOfMediaItems;
+    /* package */ boolean usePlatformDiagnostics;
     /* package */ boolean buildCalled;
 
     /**
@@ -498,6 +499,7 @@ public interface ExoPlayer extends Player {
      *   <li>{@code releaseTimeoutMs}: {@link #DEFAULT_RELEASE_TIMEOUT_MS}
      *   <li>{@code detachSurfaceTimeoutMs}: {@link #DEFAULT_DETACH_SURFACE_TIMEOUT_MS}
      *   <li>{@code pauseAtEndOfMediaItems}: {@code false}
+     *   <li>{@code usePlatformDiagnostics}: {@code true}
      *   <li>{@link Clock}: {@link Clock#DEFAULT}
      * </ul>
      *
@@ -643,6 +645,7 @@ public interface ExoPlayer extends Player {
       clock = Clock.DEFAULT;
       releaseTimeoutMs = DEFAULT_RELEASE_TIMEOUT_MS;
       detachSurfaceTimeoutMs = DEFAULT_DETACH_SURFACE_TIMEOUT_MS;
+      usePlatformDiagnostics = true;
     }
 
     /**
@@ -1003,6 +1006,27 @@ public interface ExoPlayer extends Player {
       return this;
     }
 
+    /**
+     * Sets whether the player reports diagnostics data to the Android platform.
+     *
+     * <p>If enabled, the player will use the {@link android.media.metrics.MediaMetricsManager} to
+     * create a {@link android.media.metrics.PlaybackSession} and forward playback events and
+     * performance data to this session. This helps to provide system performance and debugging
+     * information for media playback on the device. This data may also be collected by Google <a
+     * href="https://support.google.com/accounts/answer/6078260">if sharing usage and diagnostics
+     * data is enabled</a> by the user of the device.
+     *
+     * @param usePlatformDiagnostics Whether the player reports diagnostics data to the Android
+     *     platform.
+     * @return This builder.
+     * @throws IllegalStateException If {@link #build()} has already been called.
+     */
+    public Builder setUsePlatformDiagnostics(boolean usePlatformDiagnostics) {
+      checkState(!buildCalled);
+      this.usePlatformDiagnostics = usePlatformDiagnostics;
+      return this;
+    }
+
     /**
      * Sets the {@link Clock} that will be used by the player. Should only be set for testing
      * purposes.

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

@@ -56,6 +56,7 @@ import com.google.android.exoplayer2.PlayerMessage.Target;
 import com.google.android.exoplayer2.Renderer.MessageType;
 import com.google.android.exoplayer2.analytics.AnalyticsCollector;
 import com.google.android.exoplayer2.analytics.AnalyticsListener;
+import com.google.android.exoplayer2.analytics.MediaMetricsListener;
 import com.google.android.exoplayer2.analytics.PlayerId;
 import com.google.android.exoplayer2.audio.AudioAttributes;
 import com.google.android.exoplayer2.audio.AudioRendererEventListener;
@@ -306,7 +307,11 @@ import java.util.concurrent.TimeoutException;
               playbackInfoUpdateHandler.post(() -> handlePlaybackInfo(playbackInfoUpdate));
       playbackInfo = PlaybackInfo.createDummy(emptyTrackSelectorResult);
       analyticsCollector.setPlayer(this.wrappingPlayer, applicationLooper);
-      PlayerId playerId = Util.SDK_INT < 31 ? new PlayerId() : Api31.createPlayerId();
+      PlayerId playerId =
+          Util.SDK_INT < 31
+              ? new PlayerId()
+              : Api31.registerMediaMetricsListener(
+                  applicationContext, /* player= */ this, builder.usePlatformDiagnostics);
       internalPlayer =
           new ExoPlayerImplInternal(
               renderers,
@@ -3063,9 +3068,17 @@ import java.util.concurrent.TimeoutException;
     private Api31() {}
 
     @DoNotInline
-    public static PlayerId createPlayerId() {
+    public static PlayerId registerMediaMetricsListener(
-      // TODO: Create a MediaMetricsListener and obtain LogSessionId from it.
+        Context context, ExoPlayerImpl player, boolean usePlatformDiagnostics) {
+      @Nullable MediaMetricsListener listener = MediaMetricsListener.create(context);
+      if (listener == null) {
+        Log.w(TAG, "MediaMetricsService unavailable.");
         return new PlayerId(LogSessionId.LOG_SESSION_ID_NONE);
       }
+      if (usePlatformDiagnostics) {
+        player.addAnalyticsListener(listener);
+      }
+      return new PlayerId(listener.getLogSessionId());
+    }
   }
 }