Merge " Add a system TextToSpeech implementation that initiates the connection through the system server." into sc-dev
diff --git a/core/java/android/content/Context.java b/core/java/android/content/Context.java
index 5166943..10b00f2 100644
--- a/core/java/android/content/Context.java
+++ b/core/java/android/content/Context.java
@@ -4583,6 +4583,14 @@
public static final String AUTOFILL_MANAGER_SERVICE = "autofill";
/**
+ * Official published name of the (internal) text to speech manager service.
+ *
+ * @hide
+ * @see #getSystemService(String)
+ */
+ public static final String TEXT_TO_SPEECH_MANAGER_SERVICE = "texttospeech";
+
+ /**
* Official published name of the content capture service.
*
* @hide
diff --git a/core/java/android/speech/tts/ITextToSpeechManager.aidl b/core/java/android/speech/tts/ITextToSpeechManager.aidl
new file mode 100644
index 0000000..e6b63df
--- /dev/null
+++ b/core/java/android/speech/tts/ITextToSpeechManager.aidl
@@ -0,0 +1,29 @@
+/*
+ * Copyright (C) 2021 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 android.speech.tts;
+
+import android.speech.tts.ITextToSpeechSessionCallback;
+
+/**
+ * TextToSpeechManagerService interface. Allows opening {@link TextToSpeech} session with the
+ * specified provider proxied by the system service.
+ *
+ * @hide
+ */
+oneway interface ITextToSpeechManager {
+ void createSession(in String engine, in ITextToSpeechSessionCallback managerCallback);
+}
diff --git a/core/java/android/speech/tts/ITextToSpeechSession.aidl b/core/java/android/speech/tts/ITextToSpeechSession.aidl
new file mode 100644
index 0000000..b2afeb0
--- /dev/null
+++ b/core/java/android/speech/tts/ITextToSpeechSession.aidl
@@ -0,0 +1,33 @@
+/*
+ * Copyright (C) 2021 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 android.speech.tts;
+
+/**
+ * TextToSpeech session interface. Allows to control remote TTS service session once connected.
+ *
+ * @see ITextToSpeechManager
+ * @see ITextToSpeechSessionCallback
+ *
+ * {@hide}
+ */
+oneway interface ITextToSpeechSession {
+
+ /**
+ * Disconnects the client from the TTS provider.
+ */
+ void disconnect();
+}
\ No newline at end of file
diff --git a/core/java/android/speech/tts/ITextToSpeechSessionCallback.aidl b/core/java/android/speech/tts/ITextToSpeechSessionCallback.aidl
new file mode 100644
index 0000000..545622a
--- /dev/null
+++ b/core/java/android/speech/tts/ITextToSpeechSessionCallback.aidl
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2021 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 android.speech.tts;
+import android.speech.tts.ITextToSpeechSession;
+
+/**
+ * Callback interface for a session created by {@link ITextToSpeechManager} API.
+ *
+ * @hide
+ */
+oneway interface ITextToSpeechSessionCallback {
+
+ void onConnected(in ITextToSpeechSession session, in IBinder serviceBinder);
+
+ void onDisconnected();
+
+ void onError(in String errorInfo);
+}
\ No newline at end of file
diff --git a/core/java/android/speech/tts/TextToSpeech.java b/core/java/android/speech/tts/TextToSpeech.java
index 7a18538..5d66dc7 100644
--- a/core/java/android/speech/tts/TextToSpeech.java
+++ b/core/java/android/speech/tts/TextToSpeech.java
@@ -35,6 +35,7 @@
import android.os.IBinder;
import android.os.ParcelFileDescriptor;
import android.os.RemoteException;
+import android.os.ServiceManager;
import android.text.TextUtils;
import android.util.Log;
@@ -51,6 +52,7 @@
import java.util.Map;
import java.util.MissingResourceException;
import java.util.Set;
+import java.util.concurrent.Executor;
/**
*
@@ -695,6 +697,8 @@
public static final String KEY_FEATURE_NETWORK_RETRIES_COUNT = "networkRetriesCount";
}
+ private static final boolean DEBUG = false;
+
private final Context mContext;
@UnsupportedAppUsage
private Connection mConnectingServiceConnection;
@@ -716,6 +720,9 @@
private final Map<CharSequence, Uri> mUtterances;
private final Bundle mParams = new Bundle();
private final TtsEngines mEnginesHelper;
+ private final boolean mIsSystem;
+ @Nullable private final Executor mInitExecutor;
+
@UnsupportedAppUsage
private volatile String mCurrentEngine = null;
@@ -758,8 +765,21 @@
*/
public TextToSpeech(Context context, OnInitListener listener, String engine,
String packageName, boolean useFallback) {
+ this(context, /* initExecutor= */ null, listener, engine, packageName,
+ useFallback, /* isSystem= */ true);
+ }
+
+ /**
+ * Used internally to instantiate TextToSpeech objects.
+ *
+ * @hide
+ */
+ private TextToSpeech(Context context, @Nullable Executor initExecutor,
+ OnInitListener initListener, String engine, String packageName, boolean useFallback,
+ boolean isSystem) {
mContext = context;
- mInitListener = listener;
+ mInitExecutor = initExecutor;
+ mInitListener = initListener;
mRequestedEngine = engine;
mUseFallback = useFallback;
@@ -768,6 +788,9 @@
mUtteranceProgressListener = null;
mEnginesHelper = new TtsEngines(mContext);
+
+ mIsSystem = isSystem;
+
initTts();
}
@@ -842,10 +865,14 @@
}
private boolean connectToEngine(String engine) {
- Connection connection = new Connection();
- Intent intent = new Intent(Engine.INTENT_ACTION_TTS_SERVICE);
- intent.setPackage(engine);
- boolean bound = mContext.bindService(intent, connection, Context.BIND_AUTO_CREATE);
+ Connection connection;
+ if (mIsSystem) {
+ connection = new SystemConnection();
+ } else {
+ connection = new DirectConnection();
+ }
+
+ boolean bound = connection.connect(engine);
if (!bound) {
Log.e(TAG, "Failed to bind to " + engine);
return false;
@@ -857,11 +884,19 @@
}
private void dispatchOnInit(int result) {
- synchronized (mStartLock) {
- if (mInitListener != null) {
- mInitListener.onInit(result);
- mInitListener = null;
+ Runnable onInitCommand = () -> {
+ synchronized (mStartLock) {
+ if (mInitListener != null) {
+ mInitListener.onInit(result);
+ mInitListener = null;
+ }
}
+ };
+
+ if (mInitExecutor != null) {
+ mInitExecutor.execute(onInitCommand);
+ } else {
+ onInitCommand.run();
}
}
@@ -2127,13 +2162,17 @@
return mEnginesHelper.getEngines();
}
- private class Connection implements ServiceConnection {
+ private abstract class Connection implements ServiceConnection {
private ITextToSpeechService mService;
private SetupConnectionAsyncTask mOnSetupConnectionAsyncTask;
private boolean mEstablished;
+ abstract boolean connect(String engine);
+
+ abstract void disconnect();
+
private final ITextToSpeechCallback.Stub mCallback =
new ITextToSpeechCallback.Stub() {
public void onStop(String utteranceId, boolean isStarted)
@@ -2199,11 +2238,6 @@
};
private class SetupConnectionAsyncTask extends AsyncTask<Void, Void, Integer> {
- private final ComponentName mName;
-
- public SetupConnectionAsyncTask(ComponentName name) {
- mName = name;
- }
@Override
protected Integer doInBackground(Void... params) {
@@ -2227,7 +2261,7 @@
mParams.putString(Engine.KEY_PARAM_VOICE_NAME, defaultVoiceName);
}
- Log.i(TAG, "Set up connection to " + mName);
+ Log.i(TAG, "Setting up the connection to TTS engine...");
return SUCCESS;
} catch (RemoteException re) {
Log.e(TAG, "Error connecting to service, setCallback() failed");
@@ -2249,11 +2283,11 @@
}
@Override
- public void onServiceConnected(ComponentName name, IBinder service) {
+ public void onServiceConnected(ComponentName componentName, IBinder service) {
synchronized(mStartLock) {
mConnectingServiceConnection = null;
- Log.i(TAG, "Connected to " + name);
+ Log.i(TAG, "Connected to TTS engine");
if (mOnSetupConnectionAsyncTask != null) {
mOnSetupConnectionAsyncTask.cancel(false);
@@ -2263,7 +2297,7 @@
mServiceConnection = Connection.this;
mEstablished = false;
- mOnSetupConnectionAsyncTask = new SetupConnectionAsyncTask(name);
+ mOnSetupConnectionAsyncTask = new SetupConnectionAsyncTask();
mOnSetupConnectionAsyncTask.execute();
}
}
@@ -2277,7 +2311,7 @@
*
* @return true if we cancel mOnSetupConnectionAsyncTask in progress.
*/
- private boolean clearServiceConnection() {
+ protected boolean clearServiceConnection() {
synchronized(mStartLock) {
boolean result = false;
if (mOnSetupConnectionAsyncTask != null) {
@@ -2295,8 +2329,8 @@
}
@Override
- public void onServiceDisconnected(ComponentName name) {
- Log.i(TAG, "Asked to disconnect from " + name);
+ public void onServiceDisconnected(ComponentName componentName) {
+ Log.i(TAG, "Disconnected from TTS engine");
if (clearServiceConnection()) {
/* We need to protect against a rare case where engine
* dies just after successful connection - and we process onServiceDisconnected
@@ -2308,11 +2342,6 @@
}
}
- public void disconnect() {
- mContext.unbindService(this);
- clearServiceConnection();
- }
-
public boolean isEstablished() {
return mService != null && mEstablished;
}
@@ -2342,6 +2371,91 @@
}
}
+ // Currently all the clients are routed through the System connection. Direct connection
+ // is left for debugging, testing and benchmarking purposes.
+ // TODO(b/179599071): Remove direct connection once system one is fully tested.
+ private class DirectConnection extends Connection {
+ @Override
+ boolean connect(String engine) {
+ Intent intent = new Intent(Engine.INTENT_ACTION_TTS_SERVICE);
+ intent.setPackage(engine);
+ return mContext.bindService(intent, this, Context.BIND_AUTO_CREATE);
+ }
+
+ @Override
+ void disconnect() {
+ mContext.unbindService(this);
+ clearServiceConnection();
+ }
+ }
+
+ private class SystemConnection extends Connection {
+
+ @Nullable
+ private volatile ITextToSpeechSession mSession;
+
+ @Override
+ boolean connect(String engine) {
+ IBinder binder = ServiceManager.getService(Context.TEXT_TO_SPEECH_MANAGER_SERVICE);
+
+ ITextToSpeechManager manager = ITextToSpeechManager.Stub.asInterface(binder);
+
+ if (manager == null) {
+ Log.e(TAG, "System service is not available!");
+ return false;
+ }
+
+ if (DEBUG) {
+ Log.d(TAG, "Connecting to engine: " + engine);
+ }
+
+ try {
+ manager.createSession(engine, new ITextToSpeechSessionCallback.Stub() {
+ @Override
+ public void onConnected(ITextToSpeechSession session, IBinder serviceBinder) {
+ mSession = session;
+ onServiceConnected(
+ /* componentName= */ null,
+ serviceBinder);
+ }
+
+ @Override
+ public void onDisconnected() {
+ onServiceDisconnected(/* componentName= */ null);
+ }
+
+ @Override
+ public void onError(String errorInfo) {
+ Log.w(TAG, "System TTS connection error: " + errorInfo);
+ // The connection was not established successfully - handle as
+ // disconnection: clear the state and notify the user.
+ onServiceDisconnected(/* componentName= */ null);
+ }
+ });
+
+ return true;
+ } catch (RemoteException ex) {
+ Log.e(TAG, "Error communicating with the System Server: ", ex);
+ throw ex.rethrowFromSystemServer();
+ }
+ }
+
+ @Override
+ void disconnect() {
+ ITextToSpeechSession session = mSession;
+
+ if (session != null) {
+ try {
+ session.disconnect();
+ } catch (RemoteException ex) {
+ Log.w(TAG, "Error disconnecting session", ex);
+ }
+
+ clearServiceConnection();
+ }
+ }
+ }
+
private interface Action<R> {
R run(ITextToSpeechService service) throws RemoteException;
}
diff --git a/services/Android.bp b/services/Android.bp
index 61591c2..3154628 100644
--- a/services/Android.bp
+++ b/services/Android.bp
@@ -33,6 +33,7 @@
":services.startop.iorap-sources",
":services.systemcaptions-sources",
":services.translation-sources",
+ ":services.texttospeech-sources",
":services.usage-sources",
":services.usb-sources",
":services.voiceinteraction-sources",
@@ -83,6 +84,7 @@
"services.startop",
"services.systemcaptions",
"services.translation",
+ "services.texttospeech",
"services.usage",
"services.usb",
"services.voiceinteraction",
diff --git a/services/core/java/com/android/server/infra/AbstractMasterSystemService.java b/services/core/java/com/android/server/infra/AbstractMasterSystemService.java
index c4c0f68..bd577f3 100644
--- a/services/core/java/com/android/server/infra/AbstractMasterSystemService.java
+++ b/services/core/java/com/android/server/infra/AbstractMasterSystemService.java
@@ -371,6 +371,9 @@
int durationMs) {
Slog.i(mTag, "setTemporaryService(" + userId + ") to " + componentName + " for "
+ durationMs + "ms");
+ if (mServiceNameResolver == null) {
+ return;
+ }
enforceCallingPermissionForManagement();
Objects.requireNonNull(componentName);
@@ -404,6 +407,9 @@
enforceCallingPermissionForManagement();
synchronized (mLock) {
+ if (mServiceNameResolver == null) {
+ return false;
+ }
final boolean changed = mServiceNameResolver.setDefaultServiceEnabled(userId, enabled);
if (!changed) {
if (verbose) {
@@ -434,6 +440,10 @@
public final boolean isDefaultServiceEnabled(@UserIdInt int userId) {
enforceCallingPermissionForManagement();
+ if (mServiceNameResolver == null) {
+ return false;
+ }
+
synchronized (mLock) {
return mServiceNameResolver.isDefaultServiceEnabled(userId);
}
@@ -958,6 +968,10 @@
public void onPackageModified(String packageName) {
if (verbose) Slog.v(mTag, "onPackageModified(): " + packageName);
+ if (mServiceNameResolver == null) {
+ return;
+ }
+
final int userId = getChangingUserId();
final String serviceName = mServiceNameResolver.getDefaultServiceName(userId);
if (serviceName == null) {
diff --git a/services/java/com/android/server/SystemServer.java b/services/java/com/android/server/SystemServer.java
index 2b09d12..dd2dd81 100644
--- a/services/java/com/android/server/SystemServer.java
+++ b/services/java/com/android/server/SystemServer.java
@@ -326,6 +326,8 @@
"com.android.server.musicrecognition.MusicRecognitionManagerService";
private static final String SYSTEM_CAPTIONS_MANAGER_SERVICE_CLASS =
"com.android.server.systemcaptions.SystemCaptionsManagerService";
+ private static final String TEXT_TO_SPEECH_MANAGER_SERVICE_CLASS =
+ "com.android.server.texttospeech.TextToSpeechManagerService";
private static final String TIME_ZONE_RULES_MANAGER_SERVICE_CLASS =
"com.android.server.timezone.RulesManagerService$Lifecycle";
private static final String IOT_SERVICE_CLASS =
@@ -1713,6 +1715,7 @@
startAttentionService(context, t);
startRotationResolverService(context, t);
startSystemCaptionsManagerService(context, t);
+ startTextToSpeechManagerService(context, t);
// System Speech Recognition Service
if (deviceHasConfigString(context,
@@ -2918,6 +2921,13 @@
t.traceEnd();
}
+ private void startTextToSpeechManagerService(@NonNull Context context,
+ @NonNull TimingsTraceAndSlog t) {
+ t.traceBegin("StartTextToSpeechManagerService");
+ mSystemServiceManager.startService(TEXT_TO_SPEECH_MANAGER_SERVICE_CLASS);
+ t.traceEnd();
+ }
+
private void startContentCaptureService(@NonNull Context context,
@NonNull TimingsTraceAndSlog t) {
// First check if it was explicitly enabled by DeviceConfig
diff --git a/services/texttospeech/Android.bp b/services/texttospeech/Android.bp
new file mode 100644
index 0000000..bacc932
--- /dev/null
+++ b/services/texttospeech/Android.bp
@@ -0,0 +1,13 @@
+filegroup {
+ name: "services.texttospeech-sources",
+ srcs: ["java/**/*.java"],
+ path: "java",
+ visibility: ["//frameworks/base/services"],
+}
+
+java_library_static {
+ name: "services.texttospeech",
+ defaults: ["platform_service_defaults"],
+ srcs: [":services.texttospeech-sources"],
+ libs: ["services.core"],
+}
\ No newline at end of file
diff --git a/services/texttospeech/java/com/android/server/texttospeech/TextToSpeechManagerPerUserService.java b/services/texttospeech/java/com/android/server/texttospeech/TextToSpeechManagerPerUserService.java
new file mode 100644
index 0000000..f805904
--- /dev/null
+++ b/services/texttospeech/java/com/android/server/texttospeech/TextToSpeechManagerPerUserService.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright (C) 2020 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.texttospeech;
+
+import static com.android.internal.infra.AbstractRemoteService.PERMANENT_BOUND_TIMEOUT_MS;
+
+import android.annotation.NonNull;
+import android.annotation.UserIdInt;
+import android.app.AppGlobals;
+import android.content.ComponentName;
+import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.content.pm.ServiceInfo;
+import android.os.IBinder.DeathRecipient;
+import android.os.RemoteException;
+import android.speech.tts.ITextToSpeechService;
+import android.speech.tts.ITextToSpeechSession;
+import android.speech.tts.ITextToSpeechSessionCallback;
+import android.speech.tts.TextToSpeech;
+import android.util.Slog;
+
+import com.android.internal.annotations.GuardedBy;
+import com.android.internal.infra.ServiceConnector;
+import com.android.server.infra.AbstractPerUserSystemService;
+
+import java.util.NoSuchElementException;
+
+/**
+ * Manages per-user text to speech session activated by {@link TextToSpeechManagerService}.
+ * Creates {@link TtsClient} interface object with direct connection to
+ * {@link android.speech.tts.TextToSpeechService} provider.
+ *
+ * @see ITextToSpeechSession
+ * @see TextToSpeech
+ */
+final class TextToSpeechManagerPerUserService extends
+ AbstractPerUserSystemService<TextToSpeechManagerPerUserService,
+ TextToSpeechManagerService> {
+
+ private static final String TAG = TextToSpeechManagerPerUserService.class.getSimpleName();
+
+ TextToSpeechManagerPerUserService(
+ @NonNull TextToSpeechManagerService master,
+ @NonNull Object lock, @UserIdInt int userId) {
+ super(master, lock, userId);
+ }
+
+ void createSessionLocked(String engine, ITextToSpeechSessionCallback sessionCallback) {
+ TextToSpeechSessionConnection.start(getContext(), mUserId, engine, sessionCallback);
+ }
+
+ @GuardedBy("mLock")
+ @Override // from PerUserSystemService
+ @NonNull
+ protected ServiceInfo newServiceInfoLocked(
+ @SuppressWarnings("unused") @NonNull ComponentName serviceComponent)
+ throws PackageManager.NameNotFoundException {
+ try {
+ return AppGlobals.getPackageManager().getServiceInfo(serviceComponent,
+ PackageManager.GET_META_DATA, mUserId);
+ } catch (RemoteException e) {
+ throw new PackageManager.NameNotFoundException(
+ "Could not get service for " + serviceComponent);
+ }
+ }
+
+ private static class TextToSpeechSessionConnection extends
+ ServiceConnector.Impl<ITextToSpeechService> {
+
+ private final String mEngine;
+ private final ITextToSpeechSessionCallback mCallback;
+ private final DeathRecipient mUnbindOnDeathHandler;
+
+ static void start(Context context, @UserIdInt int userId, String engine,
+ ITextToSpeechSessionCallback callback) {
+ new TextToSpeechSessionConnection(context, userId, engine, callback).start();
+ }
+
+ private TextToSpeechSessionConnection(Context context, @UserIdInt int userId, String engine,
+ ITextToSpeechSessionCallback callback) {
+ super(context,
+ new Intent(TextToSpeech.Engine.INTENT_ACTION_TTS_SERVICE).setPackage(engine),
+ Context.BIND_AUTO_CREATE,
+ userId,
+ ITextToSpeechService.Stub::asInterface);
+ mEngine = engine;
+ mCallback = callback;
+ mUnbindOnDeathHandler = () -> unbindEngine("client process death is reported");
+ }
+
+ private void start() {
+ Slog.d(TAG, "Trying to start connection to TTS engine: " + mEngine);
+
+ connect()
+ .thenAccept(
+ serviceBinder -> {
+ if (serviceBinder != null) {
+ Slog.d(TAG,
+ "Connected successfully to TTS engine: " + mEngine);
+ try {
+ mCallback.onConnected(new ITextToSpeechSession.Stub() {
+ @Override
+ public void disconnect() {
+ unbindEngine("client disconnection request");
+ }
+ }, serviceBinder.asBinder());
+
+ mCallback.asBinder().linkToDeath(mUnbindOnDeathHandler, 0);
+ } catch (RemoteException ex) {
+ Slog.w(TAG, "Error notifying the client on connection", ex);
+
+ unbindEngine(
+ "failed communicating with the client - process "
+ + "is dead");
+ }
+ } else {
+ Slog.w(TAG, "Failed to obtain TTS engine binder");
+ runSessionCallbackMethod(
+ () -> mCallback.onError("Failed creating TTS session"));
+ }
+ })
+ .exceptionally(ex -> {
+ Slog.w(TAG, "TTS engine binding error", ex);
+ runSessionCallbackMethod(
+ () -> mCallback.onError(
+ "Failed creating TTS session: " + ex.getCause()));
+
+ return null;
+ });
+ }
+
+ @Override // from ServiceConnector.Impl
+ protected void onServiceConnectionStatusChanged(
+ ITextToSpeechService service, boolean connected) {
+ if (!connected) {
+ Slog.w(TAG, "Disconnected from TTS engine");
+ runSessionCallbackMethod(mCallback::onDisconnected);
+
+ try {
+ mCallback.asBinder().unlinkToDeath(mUnbindOnDeathHandler, 0);
+ } catch (NoSuchElementException ex) {
+ Slog.d(TAG, "The death recipient was not linked.");
+ }
+ }
+ }
+
+ @Override // from ServiceConnector.Impl
+ protected long getAutoDisconnectTimeoutMs() {
+ return PERMANENT_BOUND_TIMEOUT_MS;
+ }
+
+ private void unbindEngine(String reason) {
+ Slog.d(TAG, "Unbinding TTS engine: " + mEngine + ". Reason: " + reason);
+ unbind();
+ }
+ }
+
+ static void runSessionCallbackMethod(ThrowingRunnable callbackRunnable) {
+ try {
+ callbackRunnable.runOrThrow();
+ } catch (RemoteException ex) {
+ Slog.w(TAG, "Failed running callback method", ex);
+ }
+ }
+
+ interface ThrowingRunnable {
+ void runOrThrow() throws RemoteException;
+ }
+}
diff --git a/services/texttospeech/java/com/android/server/texttospeech/TextToSpeechManagerService.java b/services/texttospeech/java/com/android/server/texttospeech/TextToSpeechManagerService.java
new file mode 100644
index 0000000..9015563
--- /dev/null
+++ b/services/texttospeech/java/com/android/server/texttospeech/TextToSpeechManagerService.java
@@ -0,0 +1,77 @@
+/*
+ * Copyright (C) 2020 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.texttospeech;
+
+import static com.android.server.texttospeech.TextToSpeechManagerPerUserService.runSessionCallbackMethod;
+
+import android.annotation.NonNull;
+import android.annotation.UserIdInt;
+import android.content.Context;
+import android.os.UserHandle;
+import android.speech.tts.ITextToSpeechManager;
+import android.speech.tts.ITextToSpeechSessionCallback;
+
+import com.android.server.infra.AbstractMasterSystemService;
+
+
+/**
+ * A service that allows secured synthesizing of text to speech audio. Upon request creates a
+ * session
+ * that is managed by {@link TextToSpeechManagerPerUserService}.
+ *
+ * @see ITextToSpeechManager
+ */
+public final class TextToSpeechManagerService extends
+ AbstractMasterSystemService<TextToSpeechManagerService,
+ TextToSpeechManagerPerUserService> {
+
+ private static final String TAG = TextToSpeechManagerService.class.getSimpleName();
+
+ public TextToSpeechManagerService(@NonNull Context context) {
+ super(context, /* serviceNameResolver= */ null,
+ /* disallowProperty = */null);
+ }
+
+ @Override // from SystemService
+ public void onStart() {
+ publishBinderService(Context.TEXT_TO_SPEECH_MANAGER_SERVICE,
+ new TextToSpeechManagerServiceStub());
+ }
+
+ @Override
+ protected TextToSpeechManagerPerUserService newServiceLocked(
+ @UserIdInt int resolvedUserId, boolean disabled) {
+ return new TextToSpeechManagerPerUserService(this, mLock, resolvedUserId);
+ }
+
+ private final class TextToSpeechManagerServiceStub extends ITextToSpeechManager.Stub {
+ @Override
+ public void createSession(String engine,
+ ITextToSpeechSessionCallback sessionCallback) {
+ synchronized (mLock) {
+ TextToSpeechManagerPerUserService perUserService = getServiceForUserLocked(
+ UserHandle.getCallingUserId());
+ if (perUserService != null) {
+ perUserService.createSessionLocked(engine, sessionCallback);
+ } else {
+ runSessionCallbackMethod(
+ () -> sessionCallback.onError("Service is not available for user"));
+ }
+ }
+ }
+ }
+}