Server implementation of WallpaperEffectsService API.

Test: cts tests
Bug: 213238425
CTS-Coverage-Bug: 213238425
Change-Id: Id94764483b80a62a9fcaf8b2205b63e5cb66473c
diff --git a/services/Android.bp b/services/Android.bp
index af70692..b0a5c66 100644
--- a/services/Android.bp
+++ b/services/Android.bp
@@ -102,6 +102,7 @@
         ":services.usage-sources",
         ":services.usb-sources",
         ":services.voiceinteraction-sources",
+        ":services.wallpapereffectsgeneration-sources",
         ":services.wifi-sources",
     ],
     visibility: ["//visibility:private"],
@@ -158,6 +159,7 @@
         "services.usage",
         "services.usb",
         "services.voiceinteraction",
+        "services.wallpapereffectsgeneration",
         "services.wifi",
         "service-blobstore",
         "service-jobscheduler",
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 74e04ed..1a54496 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -369,6 +369,8 @@
             "com.android.server.adb.AdbService$Lifecycle";
     private static final String SPEECH_RECOGNITION_MANAGER_SERVICE_CLASS =
             "com.android.server.speech.SpeechRecognitionManagerService";
+    private static final String WALLPAPER_EFFECTS_GENERATION_MANAGER_SERVICE_CLASS =
+            "com.android.server.wallpapereffectsgeneration.WallpaperEffectsGenerationManagerService";
     private static final String APP_PREDICTION_MANAGER_SERVICE_CLASS =
             "com.android.server.appprediction.AppPredictionManagerService";
     private static final String CONTENT_SUGGESTIONS_SERVICE_CLASS =
@@ -1891,7 +1893,6 @@
             }
             t.traceEnd();
 
-
             t.traceBegin("StartIpSecService");
             try {
                 ipSecService = IpSecService.create(context);
@@ -2132,6 +2133,14 @@
                 Slog.i(TAG, "Wallpaper service disabled by config");
             }
 
+            // WallpaperEffectsGeneration manager service
+            // TODO (b/135218095): Use deviceHasConfigString(context,
+            //  R.string.config_defaultWallpaperEffectsGenerationService)
+            t.traceBegin("StartWallpaperEffectsGenerationService");
+            mSystemServiceManager.startService(
+                    WALLPAPER_EFFECTS_GENERATION_MANAGER_SERVICE_CLASS);
+            t.traceEnd();
+
             t.traceBegin("StartAudioService");
             if (!isArc) {
                 mSystemServiceManager.startService(AudioService.Lifecycle.class);
diff --git a/services/wallpapereffectsgeneration/Android.bp b/services/wallpapereffectsgeneration/Android.bp
new file mode 100644
index 0000000..4dbb0fd
--- /dev/null
+++ b/services/wallpapereffectsgeneration/Android.bp
@@ -0,0 +1,22 @@
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "frameworks_base_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["frameworks_base_license"],
+}
+
+filegroup {
+    name: "services.wallpapereffectsgeneration-sources",
+    srcs: ["java/**/*.java"],
+    path: "java",
+    visibility: ["//frameworks/base/services"],
+}
+
+java_library_static {
+    name: "services.wallpapereffectsgeneration",
+    defaults: ["platform_service_defaults"],
+    srcs: [":services.wallpapereffectsgeneration-sources"],
+    libs: ["services.core"],
+}
diff --git a/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/RemoteWallpaperEffectsGenerationService.java b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/RemoteWallpaperEffectsGenerationService.java
new file mode 100644
index 0000000..c228daf
--- /dev/null
+++ b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/RemoteWallpaperEffectsGenerationService.java
@@ -0,0 +1,113 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.server.wallpapereffectsgeneration;
+
+import android.annotation.NonNull;
+import android.content.ComponentName;
+import android.content.Context;
+import android.os.IBinder;
+import android.service.wallpapereffectsgeneration.IWallpaperEffectsGenerationService;
+import android.service.wallpapereffectsgeneration.WallpaperEffectsGenerationService;
+import android.text.format.DateUtils;
+
+import com.android.internal.infra.AbstractMultiplePendingRequestsRemoteService;
+
+
+/**
+ * Proxy to the
+ * {@link android.service.wallpapereffectsgeneration.WallpaperEffectsGenerationService}
+ * implementation in another process.
+ */
+public class RemoteWallpaperEffectsGenerationService extends
+        AbstractMultiplePendingRequestsRemoteService<RemoteWallpaperEffectsGenerationService,
+                IWallpaperEffectsGenerationService> {
+
+    private static final String TAG =
+            RemoteWallpaperEffectsGenerationService.class.getSimpleName();
+
+    private static final long TIMEOUT_REMOTE_REQUEST_MILLIS = 2 * DateUtils.SECOND_IN_MILLIS;
+
+    private final RemoteWallpaperEffectsGenerationServiceCallback mCallback;
+
+    public RemoteWallpaperEffectsGenerationService(Context context,
+            ComponentName componentName, int userId,
+            RemoteWallpaperEffectsGenerationServiceCallback callback,
+            boolean bindInstantServiceAllowed,
+            boolean verbose) {
+        super(context, WallpaperEffectsGenerationService.SERVICE_INTERFACE,
+                componentName, userId, callback,
+                context.getMainThreadHandler(),
+                bindInstantServiceAllowed ? Context.BIND_ALLOW_INSTANT : 0,
+                verbose, /* initialCapacity= */ 1);
+        mCallback = callback;
+    }
+
+    @Override
+    protected IWallpaperEffectsGenerationService getServiceInterface(IBinder service) {
+        return IWallpaperEffectsGenerationService.Stub.asInterface(service);
+    }
+
+    @Override
+    protected long getTimeoutIdleBindMillis() {
+        return PERMANENT_BOUND_TIMEOUT_MS;
+    }
+
+    @Override
+    protected long getRemoteRequestMillis() {
+        return TIMEOUT_REMOTE_REQUEST_MILLIS;
+    }
+
+    /**
+     * Schedules a request to bind to the remote service.
+     */
+    public void reconnect() {
+        super.scheduleBind();
+    }
+
+    /**
+     * Schedule async request on remote service.
+     */
+    public void scheduleOnResolvedService(
+            @NonNull AsyncRequest<IWallpaperEffectsGenerationService> request) {
+        scheduleAsyncRequest(request);
+    }
+
+    /**
+     * Execute async request on remote service immediately instead of sending it to Handler queue.
+     */
+    public void executeOnResolvedService(
+            @NonNull AsyncRequest<IWallpaperEffectsGenerationService> request) {
+        executeAsyncRequest(request);
+    }
+
+    /**
+     * Notifies server (WallpaperEffectsGenerationPerUserService) about unexpected events..
+     */
+    public interface RemoteWallpaperEffectsGenerationServiceCallback
+            extends VultureCallback<RemoteWallpaperEffectsGenerationService> {
+        /**
+         * Notifies change in connected state of the remote service.
+         */
+        void onConnectedStateChanged(boolean connected);
+    }
+
+    @Override // from AbstractRemoteService
+    protected void handleOnConnectedStateChanged(boolean connected) {
+        if (mCallback != null) {
+            mCallback.onConnectedStateChanged(connected);
+        }
+    }
+}
diff --git a/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationManagerService.java b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationManagerService.java
new file mode 100644
index 0000000..0d0b3e0
--- /dev/null
+++ b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationManagerService.java
@@ -0,0 +1,185 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.wallpapereffectsgeneration;
+
+import static android.Manifest.permission.MANAGE_WALLPAPER_EFFECTS_GENERATION;
+import static android.app.ActivityManagerInternal.ALLOW_NON_FULL;
+import static android.content.Context.WALLPAPER_EFFECTS_GENERATION_SERVICE;
+import static android.content.pm.PackageManager.PERMISSION_GRANTED;
+
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.annotation.UserIdInt;
+import android.app.ActivityManagerInternal;
+import android.app.wallpapereffectsgeneration.CinematicEffectRequest;
+import android.app.wallpapereffectsgeneration.CinematicEffectResponse;
+import android.app.wallpapereffectsgeneration.ICinematicEffectListener;
+import android.app.wallpapereffectsgeneration.IWallpaperEffectsGenerationManager;
+import android.content.Context;
+import android.os.Binder;
+import android.os.RemoteException;
+import android.os.ResultReceiver;
+import android.os.ShellCallback;
+import android.util.Slog;
+
+import com.android.server.LocalServices;
+import com.android.server.infra.AbstractMasterSystemService;
+import com.android.server.infra.FrameworkResourcesServiceNameResolver;
+import com.android.server.wm.ActivityTaskManagerInternal;
+
+import java.io.FileDescriptor;
+import java.util.function.Consumer;
+
+/**
+ * A service used to return wallpaper effect given a request.
+ */
+public class WallpaperEffectsGenerationManagerService extends
+        AbstractMasterSystemService<WallpaperEffectsGenerationManagerService,
+                WallpaperEffectsGenerationPerUserService> {
+    private static final String TAG =
+            WallpaperEffectsGenerationManagerService.class.getSimpleName();
+    private static final boolean DEBUG = false;
+    private static final int MAX_TEMP_SERVICE_DURATION_MS = 1_000 * 60 * 2; // 2 minutes
+    private final ActivityTaskManagerInternal mActivityTaskManagerInternal;
+
+    public WallpaperEffectsGenerationManagerService(Context context) {
+        super(context,
+                new FrameworkResourcesServiceNameResolver(context,
+                        com.android.internal.R.string.config_defaultWallpaperEffectsGenerationService),
+                null,
+                PACKAGE_UPDATE_POLICY_NO_REFRESH | PACKAGE_RESTART_POLICY_NO_REFRESH);
+        mActivityTaskManagerInternal = LocalServices.getService(ActivityTaskManagerInternal.class);
+    }
+
+    @Override
+    protected WallpaperEffectsGenerationPerUserService newServiceLocked(int resolvedUserId,
+            boolean disabled) {
+        return new WallpaperEffectsGenerationPerUserService(this, mLock, resolvedUserId);
+    }
+
+    @Override
+    public void onStart() {
+        publishBinderService(WALLPAPER_EFFECTS_GENERATION_SERVICE,
+                new WallpaperEffectsGenerationManagerStub());
+    }
+
+    @Override
+    protected void enforceCallingPermissionForManagement() {
+        getContext().enforceCallingPermission(MANAGE_WALLPAPER_EFFECTS_GENERATION, TAG);
+    }
+
+    @Override // from AbstractMasterSystemService
+    protected void onServicePackageUpdatedLocked(@UserIdInt int userId) {
+        final WallpaperEffectsGenerationPerUserService service = peekServiceForUserLocked(userId);
+        if (service != null) {
+            service.onPackageUpdatedLocked();
+        }
+    }
+
+    @Override // from AbstractMasterSystemService
+    protected void onServicePackageRestartedLocked(@UserIdInt int userId) {
+        final WallpaperEffectsGenerationPerUserService service = peekServiceForUserLocked(userId);
+        if (service != null) {
+            service.onPackageRestartedLocked();
+        }
+    }
+
+    @Override
+    protected int getMaximumTemporaryServiceDurationMs() {
+        return MAX_TEMP_SERVICE_DURATION_MS;
+    }
+
+    private class WallpaperEffectsGenerationManagerStub
+            extends IWallpaperEffectsGenerationManager.Stub {
+        @Override
+        public void generateCinematicEffect(@NonNull CinematicEffectRequest request,
+                @NonNull ICinematicEffectListener listener) {
+            if (!runForUserLocked("generateCinematicEffect", (service) ->
+                    service.onGenerateCinematicEffectLocked(request, listener))) {
+                try {
+                    listener.onCinematicEffectGenerated(
+                            new CinematicEffectResponse.Builder(
+                                    CinematicEffectResponse.CINEMATIC_EFFECT_STATUS_ERROR,
+                                    request.getTaskId()).build());
+                } catch (RemoteException e) {
+                    if (DEBUG) {
+                        Slog.d(TAG, "fail to invoke cinematic effect listener for task["
+                                + request.getTaskId() + "]");
+                    }
+                }
+            }
+        }
+
+        @Override
+        public void returnCinematicEffectResponse(@NonNull CinematicEffectResponse response) {
+            runForUserLocked("returnCinematicResponse", (service) ->
+                    service.onReturnCinematicEffectResponseLocked(response));
+        }
+
+        public void onShellCommand(@Nullable FileDescriptor in, @Nullable FileDescriptor out,
+                @Nullable FileDescriptor err,
+                @NonNull String[] args, @Nullable ShellCallback callback,
+                @NonNull ResultReceiver resultReceiver) {
+            new WallpaperEffectsGenerationManagerServiceShellCommand(
+                    WallpaperEffectsGenerationManagerService.this)
+                    .exec(this, in, out, err, args, callback, resultReceiver);
+        }
+
+        /**
+         * Execute the operation for the user locked. Return true if
+         * WallpaperEffectsGenerationPerUserService is found for the user.
+         * Otherwise return false.
+         */
+        private boolean runForUserLocked(@NonNull final String func,
+                @NonNull final Consumer<WallpaperEffectsGenerationPerUserService> c) {
+            ActivityManagerInternal am = LocalServices.getService(ActivityManagerInternal.class);
+            final int userId = am.handleIncomingUser(Binder.getCallingPid(), Binder.getCallingUid(),
+                    Binder.getCallingUserHandle().getIdentifier(), false, ALLOW_NON_FULL,
+                    null, null);
+            if (DEBUG) {
+                Slog.d(TAG, "runForUserLocked:" + func + " from pid=" + Binder.getCallingPid()
+                        + ", uid=" + Binder.getCallingUid());
+            }
+            Context ctx = getContext();
+            if (!(ctx.checkCallingPermission(MANAGE_WALLPAPER_EFFECTS_GENERATION)
+                    == PERMISSION_GRANTED
+                    || mServiceNameResolver.isTemporary(userId)
+                    || mActivityTaskManagerInternal.isCallerRecents(Binder.getCallingUid()))) {
+                String msg = "Permission Denial: Cannot call " + func + " from pid="
+                        + Binder.getCallingPid() + ", uid=" + Binder.getCallingUid();
+                Slog.w(TAG, msg);
+                throw new SecurityException(msg);
+            }
+            final long origId = Binder.clearCallingIdentity();
+            boolean accepted = false;
+            try {
+                synchronized (mLock) {
+                    final WallpaperEffectsGenerationPerUserService service =
+                            getServiceForUserLocked(userId);
+                    if (service != null) {
+                        accepted = true;
+                        c.accept(service);
+                    }
+                }
+            } finally {
+                Binder.restoreCallingIdentity(origId);
+            }
+
+            return accepted;
+        }
+    }
+}
diff --git a/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationManagerServiceShellCommand.java b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationManagerServiceShellCommand.java
new file mode 100644
index 0000000..fc6f75f
--- /dev/null
+++ b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationManagerServiceShellCommand.java
@@ -0,0 +1,85 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.wallpapereffectsgeneration;
+
+import android.annotation.NonNull;
+import android.os.ShellCommand;
+
+import java.io.PrintWriter;
+
+/**
+ * The shell command implementation for the WallpaperEffectsGenerationService.
+ */
+public class WallpaperEffectsGenerationManagerServiceShellCommand extends ShellCommand {
+
+    private static final String TAG =
+            WallpaperEffectsGenerationManagerServiceShellCommand.class.getSimpleName();
+
+    private final WallpaperEffectsGenerationManagerService mService;
+
+    public WallpaperEffectsGenerationManagerServiceShellCommand(
+            @NonNull WallpaperEffectsGenerationManagerService service) {
+        mService = service;
+    }
+
+    @Override
+    public int onCommand(String cmd) {
+        if (cmd == null) {
+            return handleDefaultCommands(cmd);
+        }
+        final PrintWriter pw = getOutPrintWriter();
+        switch (cmd) {
+            case "set": {
+                final String what = getNextArgRequired();
+                switch (what) {
+                    case "temporary-service": {
+                        final int userId = Integer.parseInt(getNextArgRequired());
+                        String serviceName = getNextArg();
+                        if (serviceName == null) {
+                            mService.resetTemporaryService(userId);
+                            pw.println("WallpaperEffectsGenerationService temporarily reset. ");
+                            return 0;
+                        }
+                        final int duration = Integer.parseInt(getNextArgRequired());
+                        mService.setTemporaryService(userId, serviceName, duration);
+                        pw.println("WallpaperEffectsGenerationService temporarily set to "
+                                + serviceName + " for " + duration + "ms");
+                        break;
+                    }
+                }
+            }
+            break;
+            default:
+                return handleDefaultCommands(cmd);
+        }
+        return 0;
+    }
+
+    @Override
+    public void onHelp() {
+        try (PrintWriter pw = getOutPrintWriter()) {
+            pw.println("WallpaperEffectsGenerationService commands:");
+            pw.println("  help");
+            pw.println("    Prints this help text.");
+            pw.println("");
+            pw.println("  set temporary-service USER_ID [COMPONENT_NAME DURATION]");
+            pw.println("    Temporarily (for DURATION ms) changes the service implemtation.");
+            pw.println("    To reset, call with just the USER_ID argument.");
+            pw.println("");
+        }
+    }
+}
diff --git a/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationPerUserService.java b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationPerUserService.java
new file mode 100644
index 0000000..d541051
--- /dev/null
+++ b/services/wallpapereffectsgeneration/java/com/android/server/wallpapereffectsgeneration/WallpaperEffectsGenerationPerUserService.java
@@ -0,0 +1,274 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.server.wallpapereffectsgeneration;
+
+import android.Manifest;
+import android.annotation.NonNull;
+import android.annotation.Nullable;
+import android.app.AppGlobals;
+import android.app.wallpapereffectsgeneration.CinematicEffectRequest;
+import android.app.wallpapereffectsgeneration.CinematicEffectResponse;
+import android.app.wallpapereffectsgeneration.ICinematicEffectListener;
+import android.content.ComponentName;
+import android.content.pm.PackageManager;
+import android.content.pm.PackageManager.NameNotFoundException;
+import android.content.pm.ServiceInfo;
+import android.os.RemoteException;
+import android.util.Slog;
+
+import com.android.internal.annotations.GuardedBy;
+import com.android.server.infra.AbstractPerUserSystemService;
+
+/**
+ * Per-user instance of {@link WallpaperEffectsGenerationManagerService}.
+ */
+public class WallpaperEffectsGenerationPerUserService extends
+        AbstractPerUserSystemService<WallpaperEffectsGenerationPerUserService,
+                WallpaperEffectsGenerationManagerService> implements
+        RemoteWallpaperEffectsGenerationService.RemoteWallpaperEffectsGenerationServiceCallback {
+
+    private static final String TAG =
+            WallpaperEffectsGenerationPerUserService.class.getSimpleName();
+
+    @GuardedBy("mLock")
+    private CinematicEffectListenerWrapper mCinematicEffectListenerWrapper;
+
+    @Nullable
+    @GuardedBy("mLock")
+    private RemoteWallpaperEffectsGenerationService mRemoteService;
+
+    protected WallpaperEffectsGenerationPerUserService(
+            WallpaperEffectsGenerationManagerService master,
+            Object lock, int userId) {
+        super(master, lock, userId);
+    }
+
+    @Override // from PerUserSystemService
+    protected ServiceInfo newServiceInfoLocked(@NonNull ComponentName serviceComponent)
+            throws NameNotFoundException {
+        ServiceInfo si;
+        try {
+            si = AppGlobals.getPackageManager().getServiceInfo(serviceComponent,
+                    PackageManager.GET_META_DATA, mUserId);
+        } catch (RemoteException e) {
+            throw new NameNotFoundException("Could not get service for " + serviceComponent);
+        }
+        if (!Manifest.permission.BIND_WALLPAPER_EFFECTS_GENERATION_SERVICE.equals(si.permission)) {
+            Slog.w(TAG, "WallpaperEffectsGenerationService from '" + si.packageName
+                    + "' does not require permission "
+                    + Manifest.permission.BIND_WALLPAPER_EFFECTS_GENERATION_SERVICE);
+            throw new SecurityException("Service does not require permission "
+                    + Manifest.permission.BIND_WALLPAPER_EFFECTS_GENERATION_SERVICE);
+        }
+        return si;
+    }
+
+    @GuardedBy("mLock")
+    @Override // from PerUserSystemService
+    protected boolean updateLocked(boolean disabled) {
+        final boolean enabledChanged = super.updateLocked(disabled);
+        updateRemoteServiceLocked();
+        return enabledChanged;
+    }
+
+    /**
+     * Notifies the service of a new cinematic effect generation request.
+     */
+    @GuardedBy("mLock")
+    public void onGenerateCinematicEffectLocked(
+            @NonNull CinematicEffectRequest cinematicEffectRequest,
+            @NonNull ICinematicEffectListener cinematicEffectListener) {
+        String newTaskId = cinematicEffectRequest.getTaskId();
+        // Previous request is still being processed.
+        if (mCinematicEffectListenerWrapper != null) {
+            if (mCinematicEffectListenerWrapper.mTaskId.equals(newTaskId)) {
+                invokeCinematicListenerAndCleanup(
+                        new CinematicEffectResponse.Builder(
+                                CinematicEffectResponse.CINEMATIC_EFFECT_STATUS_PENDING, newTaskId)
+                                .build()
+                );
+            } else {
+                invokeCinematicListenerAndCleanup(
+                        new CinematicEffectResponse.Builder(
+                                CinematicEffectResponse.CINEMATIC_EFFECT_STATUS_TOO_MANY_REQUESTS,
+                                newTaskId).build()
+                );
+            }
+            return;
+        }
+        RemoteWallpaperEffectsGenerationService remoteService = ensureRemoteServiceLocked();
+        if (remoteService != null) {
+            remoteService.executeOnResolvedService(
+                    s -> s.onGenerateCinematicEffect(cinematicEffectRequest));
+            mCinematicEffectListenerWrapper =
+                    new CinematicEffectListenerWrapper(newTaskId, cinematicEffectListener);
+        } else {
+            if (isDebug()) {
+                Slog.d(TAG, "Remote service not found");
+            }
+            try {
+                cinematicEffectListener.onCinematicEffectGenerated(
+                        createErrorCinematicEffectResponse(newTaskId));
+            } catch (RemoteException e) {
+                if (isDebug()) {
+                    Slog.d(TAG, "Failed to invoke cinematic effect listener for task [" + newTaskId
+                            + "]");
+                }
+            }
+        }
+    }
+
+    /**
+     * Notifies the service of a generated cinematic effect response.
+     */
+    @GuardedBy("mLock")
+    public void onReturnCinematicEffectResponseLocked(
+            @NonNull CinematicEffectResponse cinematicEffectResponse) {
+        invokeCinematicListenerAndCleanup(cinematicEffectResponse);
+    }
+
+    @GuardedBy("mLock")
+    private void updateRemoteServiceLocked() {
+        if (mRemoteService != null) {
+            mRemoteService.destroy();
+            mRemoteService = null;
+        }
+        // End existing response and clean up listener for next request.
+        if (mCinematicEffectListenerWrapper != null) {
+            invokeCinematicListenerAndCleanup(
+                    createErrorCinematicEffectResponse(mCinematicEffectListenerWrapper.mTaskId));
+        }
+
+    }
+
+    void onPackageUpdatedLocked() {
+        if (isDebug()) {
+            Slog.v(TAG, "onPackageUpdatedLocked()");
+        }
+        destroyAndRebindRemoteService();
+    }
+
+    void onPackageRestartedLocked() {
+        if (isDebug()) {
+            Slog.v(TAG, "onPackageRestartedLocked()");
+        }
+        destroyAndRebindRemoteService();
+    }
+
+    private void destroyAndRebindRemoteService() {
+        if (mRemoteService == null) {
+            return;
+        }
+
+        if (isDebug()) {
+            Slog.d(TAG, "Destroying the old remote service.");
+        }
+        mRemoteService.destroy();
+        mRemoteService = null;
+        mRemoteService = ensureRemoteServiceLocked();
+        if (mRemoteService != null) {
+            if (isDebug()) {
+                Slog.d(TAG, "Rebinding to the new remote service.");
+            }
+            mRemoteService.reconnect();
+        }
+        // Clean up listener for next request.
+        if (mCinematicEffectListenerWrapper != null) {
+            invokeCinematicListenerAndCleanup(
+                    createErrorCinematicEffectResponse(mCinematicEffectListenerWrapper.mTaskId));
+        }
+    }
+
+    private CinematicEffectResponse createErrorCinematicEffectResponse(String taskId) {
+        return new CinematicEffectResponse.Builder(
+                CinematicEffectResponse.CINEMATIC_EFFECT_STATUS_ERROR,
+                taskId).build();
+    }
+
+    @GuardedBy("mLock")
+    private void invokeCinematicListenerAndCleanup(
+            CinematicEffectResponse cinematicEffectResponse) {
+        try {
+            if (mCinematicEffectListenerWrapper != null
+                    && mCinematicEffectListenerWrapper.mListener != null) {
+                mCinematicEffectListenerWrapper.mListener.onCinematicEffectGenerated(
+                        cinematicEffectResponse);
+            } else {
+                if (isDebug()) {
+                    Slog.w(TAG, "Cinematic effect listener not found for task["
+                            + mCinematicEffectListenerWrapper.mTaskId + "]");
+                }
+            }
+        } catch (RemoteException e) {
+            if (isDebug()) {
+                Slog.w(TAG, "Error invoking cinematic effect listener for task["
+                        + mCinematicEffectListenerWrapper.mTaskId + "]");
+            }
+        } finally {
+            mCinematicEffectListenerWrapper = null;
+        }
+    }
+
+    @GuardedBy("mLock")
+    @Nullable
+    private RemoteWallpaperEffectsGenerationService ensureRemoteServiceLocked() {
+        if (mRemoteService == null) {
+            final String serviceName = getComponentNameLocked();
+            if (serviceName == null) {
+                if (mMaster.verbose) {
+                    Slog.v(TAG, "ensureRemoteServiceLocked(): not set");
+                }
+                return null;
+            }
+            ComponentName serviceComponent = ComponentName.unflattenFromString(serviceName);
+
+            mRemoteService = new RemoteWallpaperEffectsGenerationService(getContext(),
+                    serviceComponent, mUserId, this,
+                    mMaster.isBindInstantServiceAllowed(), mMaster.verbose);
+        }
+
+        return mRemoteService;
+    }
+
+    @Override // from RemoteWallpaperEffectsGenerationService
+    public void onServiceDied(RemoteWallpaperEffectsGenerationService service) {
+        Slog.w(TAG, "remote wallpaper effects generation service died");
+        updateRemoteServiceLocked();
+    }
+
+    @Override // from RemoteWallpaperEffectsGenerationService
+    public void onConnectedStateChanged(boolean connected) {
+        if (!connected) {
+            Slog.w(TAG, "remote wallpaper effects generation service disconnected");
+            updateRemoteServiceLocked();
+        }
+    }
+
+    private static final class CinematicEffectListenerWrapper {
+        @NonNull
+        private final String mTaskId;
+        @NonNull
+        private final ICinematicEffectListener mListener;
+
+        CinematicEffectListenerWrapper(
+                @NonNull final String taskId,
+                @NonNull final ICinematicEffectListener listener) {
+            mTaskId = taskId;
+            mListener = listener;
+        }
+    }
+}