diff --git a/apex/media/framework/Android.bp b/apex/media/framework/Android.bp
index 1bf732b..d963e68 100644
--- a/apex/media/framework/Android.bp
+++ b/apex/media/framework/Android.bp
@@ -120,7 +120,7 @@
     srcs: [
         "java/android/media/ApplicationMediaCapabilities.java",
         "java/android/media/MediaFeature.java",
-        "java/android/media/MediaTranscodeManager.java",
+        "java/android/media/MediaTranscodingManager.java",
     ],
     path: "java",
 }
diff --git a/apex/media/framework/api/system-current.txt b/apex/media/framework/api/system-current.txt
index ce68447..6eea769 100644
--- a/apex/media/framework/api/system-current.txt
+++ b/apex/media/framework/api/system-current.txt
@@ -1,15 +1,15 @@
 // Signature format: 2.0
 package android.media {
 
-  public final class MediaTranscodeManager {
-    method @Nullable public android.media.MediaTranscodeManager.TranscodingSession enqueueRequest(@NonNull android.media.MediaTranscodeManager.TranscodingRequest, @NonNull java.util.concurrent.Executor, @NonNull android.media.MediaTranscodeManager.OnTranscodingFinishedListener);
+  public final class MediaTranscodingManager {
+    method @Nullable public android.media.MediaTranscodingManager.TranscodingSession enqueueRequest(@NonNull android.media.MediaTranscodingManager.TranscodingRequest, @NonNull java.util.concurrent.Executor, @NonNull android.media.MediaTranscodingManager.OnTranscodingFinishedListener);
   }
 
-  @java.lang.FunctionalInterface public static interface MediaTranscodeManager.OnTranscodingFinishedListener {
-    method public void onTranscodingFinished(@NonNull android.media.MediaTranscodeManager.TranscodingSession);
+  @java.lang.FunctionalInterface public static interface MediaTranscodingManager.OnTranscodingFinishedListener {
+    method public void onTranscodingFinished(@NonNull android.media.MediaTranscodingManager.TranscodingSession);
   }
 
-  public abstract static class MediaTranscodeManager.TranscodingRequest {
+  public abstract static class MediaTranscodingManager.TranscodingRequest {
     method public int getClientPid();
     method public int getClientUid();
     method @Nullable public android.os.ParcelFileDescriptor getDestinationFileDescriptor();
@@ -18,13 +18,13 @@
     method @NonNull public android.net.Uri getSourceUri();
   }
 
-  public static class MediaTranscodeManager.TranscodingRequest.VideoFormatResolver {
-    ctor public MediaTranscodeManager.TranscodingRequest.VideoFormatResolver(@NonNull android.media.ApplicationMediaCapabilities, @NonNull android.media.MediaFormat);
+  public static class MediaTranscodingManager.TranscodingRequest.VideoFormatResolver {
+    ctor public MediaTranscodingManager.TranscodingRequest.VideoFormatResolver(@NonNull android.media.ApplicationMediaCapabilities, @NonNull android.media.MediaFormat);
     method @Nullable public android.media.MediaFormat resolveVideoFormat();
     method public boolean shouldTranscode();
   }
 
-  public static final class MediaTranscodeManager.TranscodingSession {
+  public static final class MediaTranscodingManager.TranscodingSession {
     method public boolean addClientUid(int);
     method public void cancel();
     method @NonNull public java.util.List<java.lang.Integer> getClientUids();
@@ -33,7 +33,7 @@
     method public int getResult();
     method public int getSessionId();
     method public int getStatus();
-    method public void setOnProgressUpdateListener(@NonNull java.util.concurrent.Executor, @Nullable android.media.MediaTranscodeManager.TranscodingSession.OnProgressUpdateListener);
+    method public void setOnProgressUpdateListener(@NonNull java.util.concurrent.Executor, @Nullable android.media.MediaTranscodingManager.TranscodingSession.OnProgressUpdateListener);
     field public static final int ERROR_DROPPED_BY_SERVICE = 1; // 0x1
     field public static final int ERROR_NONE = 0; // 0x0
     field public static final int ERROR_SERVICE_DIED = 2; // 0x2
@@ -47,21 +47,21 @@
     field public static final int STATUS_RUNNING = 2; // 0x2
   }
 
-  @java.lang.FunctionalInterface public static interface MediaTranscodeManager.TranscodingSession.OnProgressUpdateListener {
-    method public void onProgressUpdate(@NonNull android.media.MediaTranscodeManager.TranscodingSession, @IntRange(from=0, to=100) int);
+  @java.lang.FunctionalInterface public static interface MediaTranscodingManager.TranscodingSession.OnProgressUpdateListener {
+    method public void onProgressUpdate(@NonNull android.media.MediaTranscodingManager.TranscodingSession, @IntRange(from=0, to=100) int);
   }
 
-  public static final class MediaTranscodeManager.VideoTranscodingRequest extends android.media.MediaTranscodeManager.TranscodingRequest {
+  public static final class MediaTranscodingManager.VideoTranscodingRequest extends android.media.MediaTranscodingManager.TranscodingRequest {
     method @NonNull public android.media.MediaFormat getVideoTrackFormat();
   }
 
-  public static final class MediaTranscodeManager.VideoTranscodingRequest.Builder {
-    ctor public MediaTranscodeManager.VideoTranscodingRequest.Builder(@NonNull android.net.Uri, @NonNull android.net.Uri, @NonNull android.media.MediaFormat);
-    method @NonNull public android.media.MediaTranscodeManager.VideoTranscodingRequest build();
-    method @NonNull public android.media.MediaTranscodeManager.VideoTranscodingRequest.Builder setClientPid(int);
-    method @NonNull public android.media.MediaTranscodeManager.VideoTranscodingRequest.Builder setClientUid(int);
-    method @NonNull public android.media.MediaTranscodeManager.VideoTranscodingRequest.Builder setDestinationFileDescriptor(@NonNull android.os.ParcelFileDescriptor);
-    method @NonNull public android.media.MediaTranscodeManager.VideoTranscodingRequest.Builder setSourceFileDescriptor(@NonNull android.os.ParcelFileDescriptor);
+  public static final class MediaTranscodingManager.VideoTranscodingRequest.Builder {
+    ctor public MediaTranscodingManager.VideoTranscodingRequest.Builder(@NonNull android.net.Uri, @NonNull android.net.Uri, @NonNull android.media.MediaFormat);
+    method @NonNull public android.media.MediaTranscodingManager.VideoTranscodingRequest build();
+    method @NonNull public android.media.MediaTranscodingManager.VideoTranscodingRequest.Builder setClientPid(int);
+    method @NonNull public android.media.MediaTranscodingManager.VideoTranscodingRequest.Builder setClientUid(int);
+    method @NonNull public android.media.MediaTranscodingManager.VideoTranscodingRequest.Builder setDestinationFileDescriptor(@NonNull android.os.ParcelFileDescriptor);
+    method @NonNull public android.media.MediaTranscodingManager.VideoTranscodingRequest.Builder setSourceFileDescriptor(@NonNull android.os.ParcelFileDescriptor);
   }
 
 }
diff --git a/apex/media/framework/java/android/media/MediaFrameworkInitializer.java b/apex/media/framework/java/android/media/MediaFrameworkInitializer.java
index de2924e..75a56b72 100644
--- a/apex/media/framework/java/android/media/MediaFrameworkInitializer.java
+++ b/apex/media/framework/java/android/media/MediaFrameworkInitializer.java
@@ -75,8 +75,8 @@
     public static void registerServiceWrappers() {
         SystemServiceRegistry.registerContextAwareService(
                 Context.MEDIA_TRANSCODING_SERVICE,
-                MediaTranscodeManager.class,
-                context -> new MediaTranscodeManager(context)
+                MediaTranscodingManager.class,
+                context -> new MediaTranscodingManager(context)
         );
         if (SdkLevel.isAtLeastS()) {
             SystemServiceRegistry.registerContextAwareService(
diff --git a/apex/media/framework/java/android/media/MediaTranscodeManager.java b/apex/media/framework/java/android/media/MediaTranscodingManager.java
similarity index 98%
rename from apex/media/framework/java/android/media/MediaTranscodeManager.java
rename to apex/media/framework/java/android/media/MediaTranscodingManager.java
index 5742d43..93d58d0 100644
--- a/apex/media/framework/java/android/media/MediaTranscodeManager.java
+++ b/apex/media/framework/java/android/media/MediaTranscodingManager.java
@@ -54,7 +54,7 @@
 /**
  Android 12 introduces Compatible media transcoding feature.  See
  <a href="https://developer.android.com/about/versions/12/features#compatible_media_transcoding">
- Compatible media transcoding</a>. MediaTranscodeManager provides an interface to the system's media
+ Compatible media transcoding</a>. MediaTranscodingManager provides an interface to the system's media
  transcoding service and can be used to transcode media files, e.g. transcoding a video from HEVC to
  AVC.
 
@@ -69,7 +69,7 @@
  <p>
  To transcode a media file, first create a {@link TranscodingRequest} through its builder class
  {@link VideoTranscodingRequest.Builder}. Transcode requests are then enqueue to the manager through
- {@link MediaTranscodeManager#enqueueRequest(
+ {@link MediaTranscodingManager#enqueueRequest(
          TranscodingRequest, Executor, OnTranscodingFinishedListener)}
  TranscodeRequest are processed based on client process's priority and request priority. When a
  transcode operation is completed the caller is notified via its
@@ -87,8 +87,8 @@
  */
 @MinSdk(Build.VERSION_CODES.S)
 @SystemApi
-public final class MediaTranscodeManager {
-    private static final String TAG = "MediaTranscodeManager";
+public final class MediaTranscodingManager {
+    private static final String TAG = "MediaTranscodingManager";
 
     /** Maximum number of retry to connect to the service. */
     private static final int CONNECT_SERVICE_RETRY_COUNT = 100;
@@ -127,7 +127,7 @@
     private final Object mLock = new Object();
     @GuardedBy("mLock")
     @NonNull private ITranscodingClient mTranscodingClient = null;
-    private static MediaTranscodeManager sMediaTranscodeManager;
+    private static MediaTranscodingManager sMediaTranscodingManager;
 
     private void handleTranscodingFinished(int sessionId, TranscodingResultParcel result) {
         synchronized (mPendingTranscodingSessions) {
@@ -306,7 +306,7 @@
                 }
 
                 try {
-                    // Do not set hasRetried for retry initiated by MediaTranscodeManager.
+                    // Do not set hasRetried for retry initiated by MediaTranscodingManager.
                     session.retryInternal(false /*setHasRetried*/);
                 } catch (Exception re) {
                     // TODO(hkuang): Return correct error code to the client.
@@ -423,7 +423,7 @@
     /**
      * @hide
      */
-    public MediaTranscodeManager(@NonNull Context context) {
+    public MediaTranscodingManager(@NonNull Context context) {
         mContext = context;
         mContentResolver = mContext.getContentResolver();
         mPackageName = mContext.getPackageName();
@@ -1348,7 +1348,7 @@
                     @IntRange(from = 0, to = 100) int progress);
         }
 
-        private final MediaTranscodeManager mManager;
+        private final MediaTranscodingManager mManager;
         private Executor mListenerExecutor;
         private OnTranscodingFinishedListener mListener;
         private int mSessionId = -1;
@@ -1374,7 +1374,7 @@
         private final TranscodingRequest mRequest;
 
         private TranscodingSession(
-                @NonNull MediaTranscodeManager manager,
+                @NonNull MediaTranscodingManager manager,
                 @NonNull TranscodingRequest request,
                 @NonNull TranscodingSessionParcel parcel,
                 @NonNull @CallbackExecutor Executor executor,
@@ -1675,10 +1675,10 @@
 
     /**
      * Enqueues a TranscodingRequest for execution.
-     * <p> Upon successfully accepting the request, MediaTranscodeManager will return a
+     * <p> Upon successfully accepting the request, MediaTranscodingManager will return a
      * {@link TranscodingSession} to the client. Client should use {@link TranscodingSession} to
      * track the progress and get the result.
-     * <p> MediaTranscodeManager will return null if fails to accept the request due to service
+     * <p> MediaTranscodingManager will return null if fails to accept the request due to service
      * rebooting. Client could retry again after receiving null.
      *
      * @param transcodingRequest The TranscodingRequest to enqueue.
diff --git a/core/java/android/app/Service.java b/core/java/android/app/Service.java
index 7cb1d89..3363872 100644
--- a/core/java/android/app/Service.java
+++ b/core/java/android/app/Service.java
@@ -387,6 +387,13 @@
      * <p>This mode makes sense for things that will be explicitly started
      * and stopped to run for arbitrary periods of time, such as a service
      * performing background music playback.
+     *
+     * <p>Since Android version {@link Build.VERSION_CODES#S}, apps
+     * targeting {@link Build.VERSION_CODES#S} or above are disallowed
+     * to start a foreground service from the background, but the restriction
+     * doesn't impact <em>restarts</em> of a sticky foreground service. However,
+     * when apps start a sticky foreground service from the background,
+     * the same restriction still applies.
      */
     public static final int START_STICKY = 1;
     
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index c02dcfd..2702772 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -4464,11 +4464,11 @@
 
     /**
      * Use with {@link #getSystemService(String)} to retrieve a {@link
-     * android.media.MediaTranscodeManager} for transcoding media.
+     * android.media.MediaTranscodingManager} for transcoding media.
      *
      * @hide
      * @see #getSystemService(String)
-     * @see android.media.MediaTranscodeManager
+     * @see android.media.MediaTranscodingManager
      */
     @SystemApi
     public static final String MEDIA_TRANSCODING_SERVICE = "media_transcoding";
diff --git a/location/java/android/location/CorrelationVector.java b/location/java/android/location/CorrelationVector.java
index 718977f..5493e25 100644
--- a/location/java/android/location/CorrelationVector.java
+++ b/location/java/android/location/CorrelationVector.java
@@ -94,8 +94,6 @@
                 "FrequencyOffsetMetersPerSecond must be non-negative (greater than or equal to 0)");
         Preconditions.checkArgument(builder.mSamplingWidthMeters > 0.0,
                 "SamplingWidthMeters must be positive (greater than 0)");
-        Preconditions.checkArgument(builder.mSamplingStartMeters >= 0.0,
-                "SamplingStartMeters must be non-negative (greater than or equal to 0)");
         mMagnitude = builder.mMagnitude;
         mFrequencyOffsetMetersPerSecond = builder.mFrequencyOffsetMetersPerSecond;
         mSamplingWidthMeters = builder.mSamplingWidthMeters;
diff --git a/services/core/java/com/android/server/am/ActiveServices.java b/services/core/java/com/android/server/am/ActiveServices.java
index f41036c..a2fec27 100644
--- a/services/core/java/com/android/server/am/ActiveServices.java
+++ b/services/core/java/com/android/server/am/ActiveServices.java
@@ -6314,10 +6314,17 @@
             final String msg = "Background started FGS: "
                     + ((r.mAllowStartForeground != REASON_DENIED) ? "Allowed " : "Disallowed ")
                     + r.mInfoAllowStartForeground;
-            Slog.wtfQuiet(TAG, msg);
             if (r.mAllowStartForeground != REASON_DENIED) {
+                if (ActivityManagerUtils.shouldSamplePackageForAtom(r.packageName,
+                        mAm.mConstants.mFgsStartAllowedLogSampleRate)) {
+                    Slog.wtfQuiet(TAG, msg);
+                }
                 Slog.i(TAG, msg);
             } else {
+                if (ActivityManagerUtils.shouldSamplePackageForAtom(r.packageName,
+                        mAm.mConstants.mFgsStartDeniedLogSampleRate)) {
+                    Slog.wtfQuiet(TAG, msg);
+                }
                 Slog.w(TAG, msg);
             }
             r.mLoggedInfoAllowStartForeground = true;
diff --git a/services/core/java/com/android/server/am/ActivityManagerConstants.java b/services/core/java/com/android/server/am/ActivityManagerConstants.java
index ac0a198..eeb41a3 100644
--- a/services/core/java/com/android/server/am/ActivityManagerConstants.java
+++ b/services/core/java/com/android/server/am/ActivityManagerConstants.java
@@ -108,6 +108,8 @@
     static final String KEY_FG_TO_BG_FGS_GRACE_DURATION = "fg_to_bg_fgs_grace_duration";
     static final String KEY_FGS_START_FOREGROUND_TIMEOUT = "fgs_start_foreground_timeout";
     static final String KEY_FGS_ATOM_SAMPLE_RATE = "fgs_atom_sample_rate";
+    static final String KEY_FGS_START_ALLOWED_LOG_SAMPLE_RATE = "fgs_start_allowed_log_sample_rate";
+    static final String KEY_FGS_START_DENIED_LOG_SAMPLE_RATE = "fgs_start_denied_log_sample_rate";
     static final String KEY_FGS_ALLOW_OPT_OUT = "fgs_allow_opt_out";
 
     private static final int DEFAULT_MAX_CACHED_PROCESSES = 32;
@@ -152,6 +154,8 @@
     private static final long DEFAULT_FG_TO_BG_FGS_GRACE_DURATION = 5 * 1000;
     private static final int DEFAULT_FGS_START_FOREGROUND_TIMEOUT_MS = 10 * 1000;
     private static final float DEFAULT_FGS_ATOM_SAMPLE_RATE = 1; // 100 %
+    private static final float DEFAULT_FGS_START_ALLOWED_LOG_SAMPLE_RATE = 0.25f; // 25%
+    private static final float DEFAULT_FGS_START_DENIED_LOG_SAMPLE_RATE = 1; // 100%
     /**
      * Same as {@link TEMPORARY_ALLOW_LIST_TYPE_FOREGROUND_SERVICE_NOT_ALLOWED}
      */
@@ -496,6 +500,20 @@
     volatile float mFgsAtomSampleRate = DEFAULT_FGS_ATOM_SAMPLE_RATE;
 
     /**
+     * Sample rate for the allowed FGS start WTF logs.
+     *
+     * If the value is 0.1, 10% of the logs would be sampled.
+     */
+    volatile float mFgsStartAllowedLogSampleRate = DEFAULT_FGS_START_ALLOWED_LOG_SAMPLE_RATE;
+
+    /**
+     * Sample rate for the denied FGS start WTF logs.
+     *
+     * If the value is 0.1, 10% of the logs would be sampled.
+     */
+    volatile float mFgsStartDeniedLogSampleRate = DEFAULT_FGS_START_DENIED_LOG_SAMPLE_RATE;
+
+    /**
      * Whether to allow "opt-out" from the foreground service restrictions.
      * (https://developer.android.com/about/versions/12/foreground-services)
      */
@@ -711,6 +729,12 @@
                             case KEY_FGS_ATOM_SAMPLE_RATE:
                                 updateFgsAtomSamplePercent();
                                 break;
+                            case KEY_FGS_START_ALLOWED_LOG_SAMPLE_RATE:
+                                updateFgsStartAllowedLogSamplePercent();
+                                break;
+                            case KEY_FGS_START_DENIED_LOG_SAMPLE_RATE:
+                                updateFgsStartDeniedLogSamplePercent();
+                                break;
                             case KEY_FGS_ALLOW_OPT_OUT:
                                 updateFgsAllowOptOut();
                                 break;
@@ -1057,6 +1081,20 @@
                 DEFAULT_FGS_ATOM_SAMPLE_RATE);
     }
 
+    private void updateFgsStartAllowedLogSamplePercent() {
+        mFgsStartAllowedLogSampleRate = DeviceConfig.getFloat(
+                DeviceConfig.NAMESPACE_ACTIVITY_MANAGER,
+                KEY_FGS_START_ALLOWED_LOG_SAMPLE_RATE,
+                DEFAULT_FGS_START_ALLOWED_LOG_SAMPLE_RATE);
+    }
+
+    private void updateFgsStartDeniedLogSamplePercent() {
+        mFgsStartDeniedLogSampleRate = DeviceConfig.getFloat(
+                DeviceConfig.NAMESPACE_ACTIVITY_MANAGER,
+                KEY_FGS_START_DENIED_LOG_SAMPLE_RATE,
+                DEFAULT_FGS_START_DENIED_LOG_SAMPLE_RATE);
+    }
+
     private void updateFgsAllowOptOut() {
         mFgsAllowOptOut = DeviceConfig.getBoolean(
                 DeviceConfig.NAMESPACE_ACTIVITY_MANAGER,
@@ -1285,6 +1323,10 @@
         pw.print("="); pw.println(mFgsStartRestrictionCheckCallerTargetSdk);
         pw.print("  "); pw.print(KEY_FGS_ATOM_SAMPLE_RATE);
         pw.print("="); pw.println(mFgsAtomSampleRate);
+        pw.print("  "); pw.print(KEY_FGS_START_ALLOWED_LOG_SAMPLE_RATE);
+        pw.print("="); pw.println(mFgsStartAllowedLogSampleRate);
+        pw.print("  "); pw.print(KEY_FGS_START_DENIED_LOG_SAMPLE_RATE);
+        pw.print("="); pw.println(mFgsStartDeniedLogSampleRate);
         pw.print("  "); pw.print(KEY_PUSH_MESSAGING_OVER_QUOTA_BEHAVIOR);
         pw.print("="); pw.println(mPushMessagingOverQuotaBehavior);
         pw.print("  "); pw.print(KEY_FGS_ALLOW_OPT_OUT);
diff --git a/services/core/java/com/android/server/wm/WallpaperController.java b/services/core/java/com/android/server/wm/WallpaperController.java
index 95e5fc2..4ff6d3c 100644
--- a/services/core/java/com/android/server/wm/WallpaperController.java
+++ b/services/core/java/com/android/server/wm/WallpaperController.java
@@ -549,6 +549,9 @@
         final WindowState prevWallpaperTarget = mWallpaperTarget;
         mWallpaperTarget = wallpaperTarget;
 
+        if (prevWallpaperTarget == null && wallpaperTarget != null) {
+            updateWallpaperOffsetLocked(mWallpaperTarget, false);
+        }
         if (wallpaperTarget == null || prevWallpaperTarget == null) {
             return;
         }