diff --git a/libs/WindowManager/Jetpack/Android.bp b/libs/WindowManager/Jetpack/Android.bp
index dc4b563..a5b192c 100644
--- a/libs/WindowManager/Jetpack/Android.bp
+++ b/libs/WindowManager/Jetpack/Android.bp
@@ -63,6 +63,12 @@
     sdk_version: "current",
 }
 
+android_library_import {
+    name: "window-extensions-core",
+    aars: ["window-extensions-core-release.aar"],
+    sdk_version: "current",
+}
+
 java_library {
     name: "androidx.window.extensions",
     srcs: [
@@ -70,7 +76,10 @@
         "src/androidx/window/util/**/*.java",
         "src/androidx/window/common/**/*.java",
     ],
-    static_libs: ["window-extensions"],
+    static_libs: [
+        "window-extensions",
+        "window-extensions-core",
+    ],
     installable: true,
     sdk_version: "core_platform",
     system_ext_specific: true,
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitController.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitController.java
index 1af1313..85812ea 100644
--- a/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitController.java
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitController.java
@@ -75,7 +75,10 @@
 import androidx.annotation.Nullable;
 import androidx.window.common.CommonFoldingFeature;
 import androidx.window.common.EmptyLifecycleCallbacksAdapter;
+import androidx.window.extensions.WindowExtensionsImpl;
 import androidx.window.extensions.WindowExtensionsProvider;
+import androidx.window.extensions.core.util.function.Consumer;
+import androidx.window.extensions.core.util.function.Function;
 import androidx.window.extensions.embedding.TransactionManager.TransactionRecord;
 import androidx.window.extensions.layout.WindowLayoutComponentImpl;
 
@@ -86,7 +89,6 @@
 import java.util.Objects;
 import java.util.Set;
 import java.util.concurrent.Executor;
-import java.util.function.Consumer;
 
 /**
  * Main controller class that manages split states and presentation.
@@ -112,7 +114,7 @@
     /**
      * A developer-defined {@link SplitAttributes} calculator to compute the current
      * {@link SplitAttributes} with the current device and window states.
-     * It is registered via {@link #setSplitAttributesCalculator(SplitAttributesCalculator)}
+     * It is registered via {@link #setSplitAttributesCalculator(Function)}
      * and unregistered via {@link #clearSplitAttributesCalculator()}.
      * This is called when:
      * <ul>
@@ -125,7 +127,7 @@
      */
     @GuardedBy("mLock")
     @Nullable
-    private SplitAttributesCalculator mSplitAttributesCalculator;
+    private Function<SplitAttributesCalculatorParams, SplitAttributes> mSplitAttributesCalculator;
 
     /**
      * Map from Task id to {@link TaskContainer} which contains all TaskFragment and split pair info
@@ -138,6 +140,7 @@
     final SparseArray<TaskContainer> mTaskContainers = new SparseArray<>();
 
     /** Callback to Jetpack to notify about changes to split states. */
+    @GuardedBy("mLock")
     @Nullable
     private Consumer<List<SplitInfo>> mEmbeddingCallback;
     private final List<SplitInfo> mLastReportedSplitStates = new ArrayList<>();
@@ -171,7 +174,8 @@
         mWindowLayoutComponent.addFoldingStateChangedCallback(new FoldingFeatureListener());
     }
 
-    private class FoldingFeatureListener implements Consumer<List<CommonFoldingFeature>> {
+    private class FoldingFeatureListener
+            implements java.util.function.Consumer<List<CommonFoldingFeature>> {
         @Override
         public void accept(List<CommonFoldingFeature> foldingFeatures) {
             synchronized (mLock) {
@@ -212,7 +216,8 @@
     }
 
     @Override
-    public void setSplitAttributesCalculator(@NonNull SplitAttributesCalculator calculator) {
+    public void setSplitAttributesCalculator(
+            @NonNull Function<SplitAttributesCalculatorParams, SplitAttributes> calculator) {
         synchronized (mLock) {
             mSplitAttributesCalculator = calculator;
         }
@@ -227,7 +232,7 @@
 
     @GuardedBy("mLock")
     @Nullable
-    SplitAttributesCalculator getSplitAttributesCalculator() {
+    Function<SplitAttributesCalculatorParams, SplitAttributes> getSplitAttributesCalculator() {
         return mSplitAttributesCalculator;
     }
 
@@ -240,9 +245,22 @@
 
     /**
      * Registers the split organizer callback to notify about changes to active splits.
+     * @deprecated Use {@link #setSplitInfoCallback(Consumer)} starting with
+     * {@link WindowExtensionsImpl#getVendorApiLevel()} 2.
      */
+    @Deprecated
     @Override
-    public void setSplitInfoCallback(@NonNull Consumer<List<SplitInfo>> callback) {
+    public void setSplitInfoCallback(
+            @NonNull java.util.function.Consumer<List<SplitInfo>> callback) {
+        Consumer<List<SplitInfo>> oemConsumer = callback::accept;
+        setSplitInfoCallback(oemConsumer);
+    }
+
+    /**
+     * Registers the split organizer callback to notify about changes to active splits.
+     * @since {@link WindowExtensionsImpl#getVendorApiLevel()} 2
+     */
+    public void setSplitInfoCallback(Consumer<List<SplitInfo>> callback) {
         synchronized (mLock) {
             mEmbeddingCallback = callback;
             updateCallbackIfNecessary();
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitPresenter.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitPresenter.java
index 9db9f87..41580a0 100644
--- a/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitPresenter.java
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/embedding/SplitPresenter.java
@@ -42,11 +42,11 @@
 import androidx.annotation.IntDef;
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
+import androidx.window.extensions.core.util.function.Function;
 import androidx.window.extensions.embedding.SplitAttributes.SplitType;
 import androidx.window.extensions.embedding.SplitAttributes.SplitType.ExpandContainersSplitType;
 import androidx.window.extensions.embedding.SplitAttributes.SplitType.HingeSplitType;
 import androidx.window.extensions.embedding.SplitAttributes.SplitType.RatioSplitType;
-import androidx.window.extensions.embedding.SplitAttributesCalculator.SplitAttributesCalculatorParams;
 import androidx.window.extensions.embedding.TaskContainer.TaskProperties;
 import androidx.window.extensions.layout.DisplayFeature;
 import androidx.window.extensions.layout.FoldingFeature;
@@ -522,7 +522,8 @@
             @NonNull SplitRule rule, @Nullable Pair<Size, Size> minDimensionsPair) {
         final Configuration taskConfiguration = taskProperties.getConfiguration();
         final WindowMetrics taskWindowMetrics = getTaskWindowMetrics(taskConfiguration);
-        final SplitAttributesCalculator calculator = mController.getSplitAttributesCalculator();
+        final Function<SplitAttributesCalculatorParams, SplitAttributes> calculator =
+                mController.getSplitAttributesCalculator();
         final SplitAttributes defaultSplitAttributes = rule.getDefaultSplitAttributes();
         final boolean isDefaultMinSizeSatisfied = rule.checkParentMetrics(taskWindowMetrics);
         if (calculator == null) {
@@ -538,7 +539,7 @@
         final SplitAttributesCalculatorParams params = new SplitAttributesCalculatorParams(
                 taskWindowMetrics, taskConfiguration, defaultSplitAttributes,
                 isDefaultMinSizeSatisfied, windowLayoutInfo, rule.getTag());
-        final SplitAttributes splitAttributes = calculator.computeSplitAttributesForParams(params);
+        final SplitAttributes splitAttributes = calculator.apply(params);
         return sanitizeSplitAttributes(taskProperties, splitAttributes, minDimensionsPair);
     }
 
diff --git a/libs/WindowManager/Jetpack/src/androidx/window/extensions/layout/WindowLayoutComponentImpl.java b/libs/WindowManager/Jetpack/src/androidx/window/extensions/layout/WindowLayoutComponentImpl.java
index 84b2bfc..32b915c 100644
--- a/libs/WindowManager/Jetpack/src/androidx/window/extensions/layout/WindowLayoutComponentImpl.java
+++ b/libs/WindowManager/Jetpack/src/androidx/window/extensions/layout/WindowLayoutComponentImpl.java
@@ -44,6 +44,7 @@
 import androidx.window.common.DeviceStateManagerFoldingFeatureProducer;
 import androidx.window.common.EmptyLifecycleCallbacksAdapter;
 import androidx.window.common.RawFoldingFeatureProducer;
+import androidx.window.extensions.core.util.function.Consumer;
 import androidx.window.util.DataProducer;
 
 import java.util.ArrayList;
@@ -51,7 +52,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.Set;
-import java.util.function.Consumer;
 
 /**
  * Reference implementation of androidx.window.extensions.layout OEM interface for use with
@@ -80,6 +80,10 @@
     private final Map<IBinder, ConfigurationChangeListener> mConfigurationChangeListeners =
             new ArrayMap<>();
 
+    @GuardedBy("mLock")
+    private final Map<java.util.function.Consumer<WindowLayoutInfo>, Consumer<WindowLayoutInfo>>
+            mJavaToExtConsumers = new ArrayMap<>();
+
     public WindowLayoutComponentImpl(@NonNull Context context) {
         ((Application) context.getApplicationContext())
                 .registerActivityLifecycleCallbacks(new NotifyOnConfigurationChanged());
@@ -90,7 +94,8 @@
     }
 
     /** Registers to listen to {@link CommonFoldingFeature} changes */
-    public void addFoldingStateChangedCallback(Consumer<List<CommonFoldingFeature>> consumer) {
+    public void addFoldingStateChangedCallback(
+            java.util.function.Consumer<List<CommonFoldingFeature>> consumer) {
         synchronized (mLock) {
             mFoldingFeatureProducer.addDataChangedCallback(consumer);
         }
@@ -104,13 +109,17 @@
      */
     @Override
     public void addWindowLayoutInfoListener(@NonNull Activity activity,
-            @NonNull Consumer<WindowLayoutInfo> consumer) {
-        addWindowLayoutInfoListener((Context) activity, consumer);
+            @NonNull java.util.function.Consumer<WindowLayoutInfo> consumer) {
+        final Consumer<WindowLayoutInfo> extConsumer = consumer::accept;
+        synchronized (mLock) {
+            mJavaToExtConsumers.put(consumer, extConsumer);
+        }
+        addWindowLayoutInfoListener(activity, extConsumer);
     }
 
     /**
-     * Similar to {@link #addWindowLayoutInfoListener(Activity, Consumer)}, but takes a UI Context
-     * as a parameter.
+     * Similar to {@link #addWindowLayoutInfoListener(Activity, java.util.function.Consumer)}, but
+     * takes a UI Context as a parameter.
      *
      * Jetpack {@link androidx.window.layout.ExtensionWindowLayoutInfoBackend} makes sure all
      * consumers related to the same {@link Context} gets updated {@link WindowLayoutInfo}
@@ -151,6 +160,18 @@
         }
     }
 
+    @Override
+    public void removeWindowLayoutInfoListener(
+            @NonNull java.util.function.Consumer<WindowLayoutInfo> consumer) {
+        final Consumer<WindowLayoutInfo> extConsumer;
+        synchronized (mLock) {
+            extConsumer = mJavaToExtConsumers.remove(consumer);
+        }
+        if (extConsumer != null) {
+            removeWindowLayoutInfoListener(extConsumer);
+        }
+    }
+
     /**
      * Removes a listener no longer interested in receiving updates.
      *
diff --git a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/EmbeddingTestUtils.java b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/EmbeddingTestUtils.java
index 2f92a57..459ec9f 100644
--- a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/EmbeddingTestUtils.java
+++ b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/EmbeddingTestUtils.java
@@ -34,9 +34,11 @@
 import android.graphics.Point;
 import android.graphics.Rect;
 import android.util.Pair;
+import android.view.WindowMetrics;
 import android.window.TaskFragmentInfo;
 import android.window.WindowContainerToken;
 
+import androidx.window.extensions.core.util.function.Predicate;
 import androidx.window.extensions.embedding.SplitAttributes.SplitType;
 import androidx.window.extensions.layout.DisplayFeature;
 import androidx.window.extensions.layout.FoldingFeature;
@@ -107,7 +109,7 @@
     static SplitRule createSplitRule(@NonNull Activity primaryActivity,
             @NonNull Intent secondaryIntent, boolean clearTop) {
         final Pair<Activity, Intent> targetPair = new Pair<>(primaryActivity, secondaryIntent);
-        return new SplitPairRule.Builder(
+        return createSplitPairRuleBuilder(
                 activityPair -> false,
                 targetPair::equals,
                 w -> true)
@@ -144,7 +146,7 @@
             @NonNull Activity secondaryActivity, int finishPrimaryWithSecondary,
             int finishSecondaryWithPrimary, boolean clearTop) {
         final Pair<Activity, Activity> targetPair = new Pair<>(primaryActivity, secondaryActivity);
-        return new SplitPairRule.Builder(
+        return createSplitPairRuleBuilder(
                 targetPair::equals,
                 activityIntentPair -> false,
                 w -> true)
@@ -223,4 +225,26 @@
         displayFeatures.add(foldingFeature);
         return new WindowLayoutInfo(displayFeatures);
     }
+
+    static ActivityRule.Builder createActivityBuilder(
+            @NonNull Predicate<Activity> activityPredicate,
+            @NonNull Predicate<Intent> intentPredicate) {
+        return new ActivityRule.Builder(activityPredicate, intentPredicate);
+    }
+
+    static SplitPairRule.Builder createSplitPairRuleBuilder(
+            @NonNull Predicate<Pair<Activity, Activity>> activitiesPairPredicate,
+            @NonNull Predicate<Pair<Activity, Intent>> activityIntentPairPredicate,
+            @NonNull Predicate<WindowMetrics> windowMetricsPredicate) {
+        return new SplitPairRule.Builder(activitiesPairPredicate, activityIntentPairPredicate,
+                windowMetricsPredicate);
+    }
+
+    static SplitPlaceholderRule.Builder createSplitPlaceholderRuleBuilder(
+            @NonNull Intent placeholderIntent, @NonNull Predicate<Activity> activityPredicate,
+            @NonNull Predicate<Intent> intentPredicate,
+            @NonNull Predicate<WindowMetrics> windowMetricsPredicate) {
+        return new SplitPlaceholderRule.Builder(placeholderIntent, activityPredicate,
+                intentPredicate, windowMetricsPredicate);
+    }
 }
diff --git a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitControllerTest.java b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitControllerTest.java
index 3cc31f9..f9cbb5c 100644
--- a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitControllerTest.java
+++ b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitControllerTest.java
@@ -34,8 +34,11 @@
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.TASK_BOUNDS;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.TASK_ID;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.TEST_TAG;
+import static androidx.window.extensions.embedding.EmbeddingTestUtils.createActivityBuilder;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createActivityInfoWithMinDimensions;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createMockTaskFragmentInfo;
+import static androidx.window.extensions.embedding.EmbeddingTestUtils.createSplitPairRuleBuilder;
+import static androidx.window.extensions.embedding.EmbeddingTestUtils.createSplitPlaceholderRuleBuilder;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createSplitRule;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createTestTaskContainer;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.getSplitBounds;
@@ -429,7 +432,7 @@
     @Test
     public void testResolveStartActivityIntent_withoutLaunchingActivity() {
         final Intent intent = new Intent();
-        final ActivityRule expandRule = new ActivityRule.Builder(r -> false, i -> i == intent)
+        final ActivityRule expandRule = createActivityBuilder(r -> false, i -> i == intent)
                 .setShouldAlwaysExpand(true)
                 .build();
         mSplitController.setEmbeddingRules(Collections.singleton(expandRule));
@@ -1167,7 +1170,7 @@
 
     @Test
     public void testHasSamePresentation() {
-        SplitPairRule splitRule1 = new SplitPairRule.Builder(
+        SplitPairRule splitRule1 = createSplitPairRuleBuilder(
                 activityPair -> true,
                 activityIntentPair -> true,
                 windowMetrics -> true)
@@ -1175,7 +1178,7 @@
                 .setFinishPrimaryWithSecondary(DEFAULT_FINISH_PRIMARY_WITH_SECONDARY)
                 .setDefaultSplitAttributes(SPLIT_ATTRIBUTES)
                 .build();
-        SplitPairRule splitRule2 = new SplitPairRule.Builder(
+        SplitPairRule splitRule2 = createSplitPairRuleBuilder(
                 activityPair -> true,
                 activityIntentPair -> true,
                 windowMetrics -> true)
@@ -1188,7 +1191,7 @@
                 SplitController.haveSamePresentation(splitRule1, splitRule2,
                         new WindowMetrics(TASK_BOUNDS, WindowInsets.CONSUMED)));
 
-        splitRule2 = new SplitPairRule.Builder(
+        splitRule2 = createSplitPairRuleBuilder(
                 activityPair -> true,
                 activityIntentPair -> true,
                 windowMetrics -> true)
@@ -1352,7 +1355,7 @@
 
     /** Setups a rule to always expand the given intent. */
     private void setupExpandRule(@NonNull Intent expandIntent) {
-        final ActivityRule expandRule = new ActivityRule.Builder(r -> false, expandIntent::equals)
+        final ActivityRule expandRule = createActivityBuilder(r -> false, expandIntent::equals)
                 .setShouldAlwaysExpand(true)
                 .build();
         mSplitController.setEmbeddingRules(Collections.singleton(expandRule));
@@ -1360,7 +1363,7 @@
 
     /** Setups a rule to always expand the given activity. */
     private void setupExpandRule(@NonNull Activity expandActivity) {
-        final ActivityRule expandRule = new ActivityRule.Builder(expandActivity::equals, i -> false)
+        final ActivityRule expandRule = createActivityBuilder(expandActivity::equals, i -> false)
                 .setShouldAlwaysExpand(true)
                 .build();
         mSplitController.setEmbeddingRules(Collections.singleton(expandRule));
@@ -1368,7 +1371,7 @@
 
     /** Setups a rule to launch placeholder for the given activity. */
     private void setupPlaceholderRule(@NonNull Activity primaryActivity) {
-        final SplitRule placeholderRule = new SplitPlaceholderRule.Builder(PLACEHOLDER_INTENT,
+        final SplitRule placeholderRule = createSplitPlaceholderRuleBuilder(PLACEHOLDER_INTENT,
                 primaryActivity::equals, i -> false, w -> true)
                 .setDefaultSplitAttributes(SPLIT_ATTRIBUTES)
                 .build();
diff --git a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitPresenterTest.java b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitPresenterTest.java
index 6dae0a1..cbb6e31 100644
--- a/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitPresenterTest.java
+++ b/libs/WindowManager/Jetpack/tests/unittest/src/androidx/window/extensions/embedding/SplitPresenterTest.java
@@ -27,6 +27,7 @@
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.TASK_ID;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createActivityInfoWithMinDimensions;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createMockTaskFragmentInfo;
+import static androidx.window.extensions.embedding.EmbeddingTestUtils.createSplitPairRuleBuilder;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createSplitRule;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.createWindowLayoutInfo;
 import static androidx.window.extensions.embedding.EmbeddingTestUtils.getSplitBounds;
@@ -473,7 +474,7 @@
         final Activity secondaryActivity = createMockActivity();
         final TaskFragmentContainer bottomTf = mController.newContainer(secondaryActivity, TASK_ID);
         final TaskFragmentContainer primaryTf = mController.newContainer(mActivity, TASK_ID);
-        final SplitPairRule rule = new SplitPairRule.Builder(pair ->
+        final SplitPairRule rule = createSplitPairRuleBuilder(pair ->
                 pair.first == mActivity && pair.second == secondaryActivity, pair -> false,
                 metrics -> true)
                 .setDefaultSplitAttributes(SPLIT_ATTRIBUTES)
@@ -491,7 +492,7 @@
 
     @Test
     public void testComputeSplitAttributes() {
-        final SplitPairRule splitPairRule = new SplitPairRule.Builder(
+        final SplitPairRule splitPairRule = createSplitPairRuleBuilder(
                 activityPair -> true,
                 activityIntentPair -> true,
                 windowMetrics -> windowMetrics.getBounds().equals(TASK_BOUNDS))
diff --git a/libs/WindowManager/Jetpack/window-extensions-core-release.aar b/libs/WindowManager/Jetpack/window-extensions-core-release.aar
new file mode 100644
index 0000000..4c08074
--- /dev/null
+++ b/libs/WindowManager/Jetpack/window-extensions-core-release.aar
Binary files differ
diff --git a/libs/WindowManager/Jetpack/window-extensions-release.aar b/libs/WindowManager/Jetpack/window-extensions-release.aar
index 4978e04..6fd8d29 100644
--- a/libs/WindowManager/Jetpack/window-extensions-release.aar
+++ b/libs/WindowManager/Jetpack/window-extensions-release.aar
Binary files differ