| /* |
| * Copyright (C) 2009 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 static android.content.Context.DEVICE_ID_DEFAULT; |
| import static android.media.AudioManager.AUDIO_SESSION_ID_GENERATE; |
| |
| import android.annotation.IntDef; |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.RawRes; |
| import android.annotation.SdkConstant; |
| import android.annotation.SdkConstant.SdkConstantType; |
| import android.companion.virtual.VirtualDevice; |
| import android.companion.virtual.VirtualDeviceManager; |
| import android.compat.annotation.UnsupportedAppUsage; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.ServiceConnection; |
| import android.media.AudioAttributes; |
| import android.media.AudioManager; |
| import android.net.Uri; |
| import android.os.AsyncTask; |
| import android.os.Bundle; |
| import android.os.IBinder; |
| import android.os.ParcelFileDescriptor; |
| import android.os.RemoteException; |
| import android.os.ServiceManager; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.io.IOException; |
| import java.lang.annotation.Retention; |
| import java.lang.annotation.RetentionPolicy; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.MissingResourceException; |
| import java.util.Set; |
| import java.util.concurrent.Executor; |
| |
| /** |
| * |
| * Synthesizes speech from text for immediate playback or to create a sound file. |
| * <p>A TextToSpeech instance can only be used to synthesize text once it has completed its |
| * initialization. Implement the {@link TextToSpeech.OnInitListener} to be |
| * notified of the completion of the initialization.<br> |
| * When you are done using the TextToSpeech instance, call the {@link #shutdown()} method |
| * to release the native resources used by the TextToSpeech engine. |
| * |
| * Apps targeting Android 11 that use text-to-speech should declare {@link |
| * TextToSpeech.Engine#INTENT_ACTION_TTS_SERVICE} in the {@code queries} elements of their |
| * manifest: |
| * |
| * <pre> |
| * <queries> |
| * ... |
| * <intent> |
| * <action android:name="android.intent.action.TTS_SERVICE" /> |
| * </intent> |
| * </queries> |
| * </pre> |
| */ |
| public class TextToSpeech { |
| |
| private static final String TAG = "TextToSpeech"; |
| |
| /** |
| * Denotes a successful operation. |
| */ |
| public static final int SUCCESS = 0; |
| /** |
| * Denotes a generic operation failure. |
| */ |
| public static final int ERROR = -1; |
| |
| /** |
| * Denotes a stop requested by a client. It's used only on the service side of the API, |
| * client should never expect to see this result code. |
| */ |
| public static final int STOPPED = -2; |
| |
| /** @hide */ |
| @IntDef(prefix = { "ERROR_" }, value = { |
| ERROR_SYNTHESIS, |
| ERROR_SERVICE, |
| ERROR_OUTPUT, |
| ERROR_NETWORK, |
| ERROR_NETWORK_TIMEOUT, |
| ERROR_INVALID_REQUEST, |
| ERROR_NOT_INSTALLED_YET |
| }) |
| @Retention(RetentionPolicy.SOURCE) |
| public @interface Error {} |
| |
| /** |
| * Denotes a failure of a TTS engine to synthesize the given input. |
| */ |
| public static final int ERROR_SYNTHESIS = -3; |
| |
| /** |
| * Denotes a failure of a TTS service. |
| */ |
| public static final int ERROR_SERVICE = -4; |
| |
| /** |
| * Denotes a failure related to the output (audio device or a file). |
| */ |
| public static final int ERROR_OUTPUT = -5; |
| |
| /** |
| * Denotes a failure caused by a network connectivity problems. |
| */ |
| public static final int ERROR_NETWORK = -6; |
| |
| /** |
| * Denotes a failure caused by network timeout. |
| */ |
| public static final int ERROR_NETWORK_TIMEOUT = -7; |
| |
| /** |
| * Denotes a failure caused by an invalid request. |
| */ |
| public static final int ERROR_INVALID_REQUEST = -8; |
| |
| /** |
| * Denotes a failure caused by an unfinished download of the voice data. |
| * @see Engine#KEY_FEATURE_NOT_INSTALLED |
| */ |
| public static final int ERROR_NOT_INSTALLED_YET = -9; |
| |
| /** |
| * Queue mode where all entries in the playback queue (media to be played |
| * and text to be synthesized) are dropped and replaced by the new entry. |
| * Queues are flushed with respect to a given calling app. Entries in the queue |
| * from other callees are not discarded. |
| */ |
| public static final int QUEUE_FLUSH = 0; |
| /** |
| * Queue mode where the new entry is added at the end of the playback queue. |
| */ |
| public static final int QUEUE_ADD = 1; |
| /** |
| * Queue mode where the entire playback queue is purged. This is different |
| * from {@link #QUEUE_FLUSH} in that all entries are purged, not just entries |
| * from a given caller. |
| * |
| * @hide |
| */ |
| static final int QUEUE_DESTROY = 2; |
| |
| /** |
| * Denotes the language is available exactly as specified by the locale. |
| */ |
| public static final int LANG_COUNTRY_VAR_AVAILABLE = 2; |
| |
| /** |
| * Denotes the language is available for the language and country specified |
| * by the locale, but not the variant. |
| */ |
| public static final int LANG_COUNTRY_AVAILABLE = 1; |
| |
| /** |
| * Denotes the language is available for the language by the locale, |
| * but not the country and variant. |
| */ |
| public static final int LANG_AVAILABLE = 0; |
| |
| /** |
| * Denotes the language data is missing. |
| */ |
| public static final int LANG_MISSING_DATA = -1; |
| |
| /** |
| * Denotes the language is not supported. |
| */ |
| public static final int LANG_NOT_SUPPORTED = -2; |
| |
| /** |
| * Broadcast Action: The TextToSpeech synthesizer has completed processing |
| * of all the text in the speech queue. |
| * |
| * Note that this notifies callers when the <b>engine</b> has finished has |
| * processing text data. Audio playback might not have completed (or even started) |
| * at this point. If you wish to be notified when this happens, see |
| * {@link OnUtteranceCompletedListener}. |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_TTS_QUEUE_PROCESSING_COMPLETED = |
| "android.speech.tts.TTS_QUEUE_PROCESSING_COMPLETED"; |
| |
| /** |
| * Interface definition of a callback to be invoked indicating the completion of the |
| * TextToSpeech engine initialization. |
| */ |
| public interface OnInitListener { |
| /** |
| * Called to signal the completion of the TextToSpeech engine initialization. |
| * |
| * @param status {@link TextToSpeech#SUCCESS} or {@link TextToSpeech#ERROR}. |
| */ |
| void onInit(int status); |
| } |
| |
| /** |
| * Listener that will be called when the TTS service has |
| * completed synthesizing an utterance. This is only called if the utterance |
| * has an utterance ID (see {@link TextToSpeech.Engine#KEY_PARAM_UTTERANCE_ID}). |
| * |
| * @deprecated Use {@link UtteranceProgressListener} instead. |
| */ |
| @Deprecated |
| public interface OnUtteranceCompletedListener { |
| /** |
| * Called when an utterance has been synthesized. |
| * |
| * @param utteranceId the identifier of the utterance. |
| */ |
| void onUtteranceCompleted(String utteranceId); |
| } |
| |
| /** |
| * Constants and parameter names for controlling text-to-speech. These include: |
| * |
| * <ul> |
| * <li> |
| * Intents to ask engine to install data or check its data and |
| * extras for a TTS engine's check data activity. |
| * </li> |
| * <li> |
| * Keys for the parameters passed with speak commands, e.g. |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID}, {@link Engine#KEY_PARAM_STREAM}. |
| * </li> |
| * <li> |
| * A list of feature strings that engines might support, e.g |
| * {@link Engine#KEY_FEATURE_NETWORK_SYNTHESIS}. These values may be passed in to |
| * {@link TextToSpeech#speak} and {@link TextToSpeech#synthesizeToFile} to modify |
| * engine behaviour. The engine can be queried for the set of features it supports |
| * through {@link TextToSpeech#getFeatures(java.util.Locale)}. |
| * </li> |
| * </ul> |
| * |
| * Apps targeting Android 11 that use text-to-speech should declare {@link |
| * TextToSpeech.Engine#INTENT_ACTION_TTS_SERVICE} in the {@code queries} elements of their |
| * manifest: |
| * |
| * <pre> |
| * <queries> |
| * ... |
| * <intent> |
| * <action android:name="android.intent.action.TTS_SERVICE" /> |
| * </intent> |
| * </queries> |
| * </pre> |
| */ |
| public class Engine { |
| |
| /** |
| * Default speech rate. |
| * @hide |
| */ |
| public static final int DEFAULT_RATE = 100; |
| |
| /** |
| * Default pitch. |
| * @hide |
| */ |
| public static final int DEFAULT_PITCH = 100; |
| |
| /** |
| * Default volume. |
| * @hide |
| */ |
| public static final float DEFAULT_VOLUME = 1.0f; |
| |
| /** |
| * Default pan (centered). |
| * @hide |
| */ |
| public static final float DEFAULT_PAN = 0.0f; |
| |
| /** |
| * Default value for {@link Settings.Secure#TTS_USE_DEFAULTS}. |
| * @hide |
| */ |
| public static final int USE_DEFAULTS = 0; // false |
| |
| /** |
| * Package name of the default TTS engine. |
| * |
| * @hide |
| * @deprecated No longer in use, the default engine is determined by |
| * the sort order defined in {@link TtsEngines}. Note that |
| * this doesn't "break" anything because there is no guarantee that |
| * the engine specified below is installed on a given build, let |
| * alone be the default. |
| */ |
| @Deprecated |
| public static final String DEFAULT_ENGINE = "com.svox.pico"; |
| |
| /** |
| * Default audio stream used when playing synthesized speech. |
| */ |
| public static final int DEFAULT_STREAM = AudioManager.STREAM_MUSIC; |
| |
| /** |
| * Indicates success when checking the installation status of the resources used by the |
| * TextToSpeech engine with the {@link #ACTION_CHECK_TTS_DATA} intent. |
| */ |
| public static final int CHECK_VOICE_DATA_PASS = 1; |
| |
| /** |
| * Indicates failure when checking the installation status of the resources used by the |
| * TextToSpeech engine with the {@link #ACTION_CHECK_TTS_DATA} intent. |
| */ |
| public static final int CHECK_VOICE_DATA_FAIL = 0; |
| |
| /** |
| * Indicates erroneous data when checking the installation status of the resources used by |
| * the TextToSpeech engine with the {@link #ACTION_CHECK_TTS_DATA} intent. |
| * |
| * @deprecated Use CHECK_VOICE_DATA_FAIL instead. |
| */ |
| @Deprecated |
| public static final int CHECK_VOICE_DATA_BAD_DATA = -1; |
| |
| /** |
| * Indicates missing resources when checking the installation status of the resources used |
| * by the TextToSpeech engine with the {@link #ACTION_CHECK_TTS_DATA} intent. |
| * |
| * @deprecated Use CHECK_VOICE_DATA_FAIL instead. |
| */ |
| @Deprecated |
| public static final int CHECK_VOICE_DATA_MISSING_DATA = -2; |
| |
| /** |
| * Indicates missing storage volume when checking the installation status of the resources |
| * used by the TextToSpeech engine with the {@link #ACTION_CHECK_TTS_DATA} intent. |
| * |
| * @deprecated Use CHECK_VOICE_DATA_FAIL instead. |
| */ |
| @Deprecated |
| public static final int CHECK_VOICE_DATA_MISSING_VOLUME = -3; |
| |
| /** |
| * Intent for starting a TTS service. Services that handle this intent must |
| * extend {@link TextToSpeechService}. Normal applications should not use this intent |
| * directly, instead they should talk to the TTS service using the the methods in this |
| * class. |
| */ |
| @SdkConstant(SdkConstantType.SERVICE_ACTION) |
| public static final String INTENT_ACTION_TTS_SERVICE = |
| "android.intent.action.TTS_SERVICE"; |
| |
| /** |
| * Name under which a text to speech engine publishes information about itself. |
| * This meta-data should reference an XML resource containing a |
| * <code><{@link android.R.styleable#TextToSpeechEngine tts-engine}></code> |
| * tag. |
| */ |
| public static final String SERVICE_META_DATA = "android.speech.tts"; |
| |
| // intents to ask engine to install data or check its data |
| /** |
| * Activity Action: Triggers the platform TextToSpeech engine to |
| * start the activity that installs the resource files on the device |
| * that are required for TTS to be operational. Since the installation |
| * of the data can be interrupted or declined by the user, the application |
| * shouldn't expect successful installation upon return from that intent, |
| * and if need be, should check installation status with |
| * {@link #ACTION_CHECK_TTS_DATA}. |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String ACTION_INSTALL_TTS_DATA = |
| "android.speech.tts.engine.INSTALL_TTS_DATA"; |
| |
| /** |
| * Broadcast Action: broadcast to signal the change in the list of available |
| * languages or/and their features. |
| */ |
| @SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION) |
| public static final String ACTION_TTS_DATA_INSTALLED = |
| "android.speech.tts.engine.TTS_DATA_INSTALLED"; |
| |
| /** |
| * Activity Action: Starts the activity from the platform TextToSpeech |
| * engine to verify the proper installation and availability of the |
| * resource files on the system. Upon completion, the activity will |
| * return one of the following codes: |
| * {@link #CHECK_VOICE_DATA_PASS}, |
| * {@link #CHECK_VOICE_DATA_FAIL}, |
| * <p> Moreover, the data received in the activity result will contain the following |
| * fields: |
| * <ul> |
| * <li>{@link #EXTRA_AVAILABLE_VOICES} which contains an ArrayList<String> of all the |
| * available voices. The format of each voice is: lang-COUNTRY-variant where COUNTRY and |
| * variant are optional (ie, "eng" or "eng-USA" or "eng-USA-FEMALE").</li> |
| * <li>{@link #EXTRA_UNAVAILABLE_VOICES} which contains an ArrayList<String> of all the |
| * unavailable voices (ones that user can install). The format of each voice is: |
| * lang-COUNTRY-variant where COUNTRY and variant are optional (ie, "eng" or |
| * "eng-USA" or "eng-USA-FEMALE").</li> |
| * </ul> |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String ACTION_CHECK_TTS_DATA = |
| "android.speech.tts.engine.CHECK_TTS_DATA"; |
| |
| /** |
| * Activity intent for getting some sample text to use for demonstrating TTS. Specific |
| * locale have to be requested by passing following extra parameters: |
| * <ul> |
| * <li>language</li> |
| * <li>country</li> |
| * <li>variant</li> |
| * </ul> |
| * |
| * Upon completion, the activity result may contain the following fields: |
| * <ul> |
| * <li>{@link #EXTRA_SAMPLE_TEXT} which contains an String with sample text.</li> |
| * </ul> |
| */ |
| @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION) |
| public static final String ACTION_GET_SAMPLE_TEXT = |
| "android.speech.tts.engine.GET_SAMPLE_TEXT"; |
| |
| /** |
| * Extra information received with the {@link #ACTION_GET_SAMPLE_TEXT} intent result where |
| * the TextToSpeech engine returns an String with sample text for requested voice |
| */ |
| public static final String EXTRA_SAMPLE_TEXT = "sampleText"; |
| |
| |
| // extras for a TTS engine's check data activity |
| /** |
| * Extra information received with the {@link #ACTION_CHECK_TTS_DATA} intent result where |
| * the TextToSpeech engine returns an ArrayList<String> of all the available voices. |
| * The format of each voice is: lang-COUNTRY-variant where COUNTRY and variant are |
| * optional (ie, "eng" or "eng-USA" or "eng-USA-FEMALE"). |
| */ |
| public static final String EXTRA_AVAILABLE_VOICES = "availableVoices"; |
| |
| /** |
| * Extra information received with the {@link #ACTION_CHECK_TTS_DATA} intent result where |
| * the TextToSpeech engine returns an ArrayList<String> of all the unavailable voices. |
| * The format of each voice is: lang-COUNTRY-variant where COUNTRY and variant are |
| * optional (ie, "eng" or "eng-USA" or "eng-USA-FEMALE"). |
| */ |
| public static final String EXTRA_UNAVAILABLE_VOICES = "unavailableVoices"; |
| |
| /** |
| * Extra information received with the {@link #ACTION_CHECK_TTS_DATA} intent result where |
| * the TextToSpeech engine specifies the path to its resources. |
| * |
| * It may be used by language packages to find out where to put their data. |
| * |
| * @deprecated TTS engine implementation detail, this information has no use for |
| * text-to-speech API client. |
| */ |
| @Deprecated |
| public static final String EXTRA_VOICE_DATA_ROOT_DIRECTORY = "dataRoot"; |
| |
| /** |
| * Extra information received with the {@link #ACTION_CHECK_TTS_DATA} intent result where |
| * the TextToSpeech engine specifies the file names of its resources under the |
| * resource path. |
| * |
| * @deprecated TTS engine implementation detail, this information has no use for |
| * text-to-speech API client. |
| */ |
| @Deprecated |
| public static final String EXTRA_VOICE_DATA_FILES = "dataFiles"; |
| |
| /** |
| * Extra information received with the {@link #ACTION_CHECK_TTS_DATA} intent result where |
| * the TextToSpeech engine specifies the locale associated with each resource file. |
| * |
| * @deprecated TTS engine implementation detail, this information has no use for |
| * text-to-speech API client. |
| */ |
| @Deprecated |
| public static final String EXTRA_VOICE_DATA_FILES_INFO = "dataFilesInfo"; |
| |
| /** |
| * Extra information sent with the {@link #ACTION_CHECK_TTS_DATA} intent where the |
| * caller indicates to the TextToSpeech engine which specific sets of voice data to |
| * check for by sending an ArrayList<String> of the voices that are of interest. |
| * The format of each voice is: lang-COUNTRY-variant where COUNTRY and variant are |
| * optional (ie, "eng" or "eng-USA" or "eng-USA-FEMALE"). |
| * |
| * @deprecated Redundant functionality, checking for existence of specific sets of voice |
| * data can be done on client side. |
| */ |
| @Deprecated |
| public static final String EXTRA_CHECK_VOICE_DATA_FOR = "checkVoiceDataFor"; |
| |
| // extras for a TTS engine's data installation |
| /** |
| * Extra information received with the {@link #ACTION_TTS_DATA_INSTALLED} intent result. |
| * It indicates whether the data files for the synthesis engine were successfully |
| * installed. The installation was initiated with the {@link #ACTION_INSTALL_TTS_DATA} |
| * intent. The possible values for this extra are |
| * {@link TextToSpeech#SUCCESS} and {@link TextToSpeech#ERROR}. |
| * |
| * @deprecated No longer in use. If client is interested in information about what |
| * changed, it should use the ACTION_CHECK_TTS_DATA |
| * intent to discover available voices. |
| */ |
| @Deprecated |
| public static final String EXTRA_TTS_DATA_INSTALLED = "dataInstalled"; |
| |
| // keys for the parameters passed with speak commands. Hidden keys are used internally |
| // to maintain engine state for each TextToSpeech instance. |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_RATE = "rate"; |
| |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_VOICE_NAME = "voiceName"; |
| |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_LANGUAGE = "language"; |
| |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_COUNTRY = "country"; |
| |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_VARIANT = "variant"; |
| |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_ENGINE = "engine"; |
| |
| /** |
| * @hide |
| */ |
| public static final String KEY_PARAM_PITCH = "pitch"; |
| |
| /** |
| * Parameter key to specify the audio stream type to be used when speaking text |
| * or playing back a file. The value should be one of the STREAM_ constants |
| * defined in {@link AudioManager}. |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#playEarcon(String, int, HashMap) |
| */ |
| public static final String KEY_PARAM_STREAM = "streamType"; |
| |
| /** |
| * Parameter key to specify the audio attributes to be used when |
| * speaking text or playing back a file. The value should be set |
| * using {@link TextToSpeech#setAudioAttributes(AudioAttributes)}. |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#playEarcon(String, int, HashMap) |
| * @hide |
| */ |
| public static final String KEY_PARAM_AUDIO_ATTRIBUTES = "audioAttributes"; |
| |
| /** |
| * Parameter key to identify an utterance in the |
| * {@link TextToSpeech.OnUtteranceCompletedListener} after text has been |
| * spoken, a file has been played back or a silence duration has elapsed. |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#playEarcon(String, int, HashMap) |
| * @see TextToSpeech#synthesizeToFile(String, HashMap, String) |
| */ |
| public static final String KEY_PARAM_UTTERANCE_ID = "utteranceId"; |
| |
| /** |
| * Parameter key to specify the speech volume relative to the current stream type |
| * volume used when speaking text. Volume is specified as a float ranging from 0 to 1 |
| * where 0 is silence, and 1 is the maximum volume (the default behavior). |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#playEarcon(String, int, HashMap) |
| */ |
| public static final String KEY_PARAM_VOLUME = "volume"; |
| |
| /** |
| * Parameter key to specify how the speech is panned from left to right when speaking text. |
| * Pan is specified as a float ranging from -1 to +1 where -1 maps to a hard-left pan, |
| * 0 to center (the default behavior), and +1 to hard-right. |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#playEarcon(String, int, HashMap) |
| */ |
| public static final String KEY_PARAM_PAN = "pan"; |
| |
| /** |
| * Feature key for network synthesis. See {@link TextToSpeech#getFeatures(Locale)} |
| * for a description of how feature keys work. If set (and supported by the engine |
| * as per {@link TextToSpeech#getFeatures(Locale)}, the engine must |
| * use network based synthesis. |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#synthesizeToFile(String, java.util.HashMap, String) |
| * @see TextToSpeech#getFeatures(java.util.Locale) |
| * |
| * @deprecated Starting from API level 21, to select network synthesis, call |
| * {@link TextToSpeech#getVoices()}, find a suitable network voice |
| * ({@link Voice#isNetworkConnectionRequired()}) and pass it |
| * to {@link TextToSpeech#setVoice(Voice)}. |
| */ |
| @Deprecated |
| public static final String KEY_FEATURE_NETWORK_SYNTHESIS = "networkTts"; |
| |
| /** |
| * Feature key for embedded synthesis. See {@link TextToSpeech#getFeatures(Locale)} |
| * for a description of how feature keys work. If set and supported by the engine |
| * as per {@link TextToSpeech#getFeatures(Locale)}, the engine must synthesize |
| * text on-device (without making network requests). |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#synthesizeToFile(String, java.util.HashMap, String) |
| * @see TextToSpeech#getFeatures(java.util.Locale) |
| |
| * @deprecated Starting from API level 21, to select embedded synthesis, call |
| * ({@link TextToSpeech#getVoices()}, find a suitable embedded voice |
| * ({@link Voice#isNetworkConnectionRequired()}) and pass it |
| * to {@link TextToSpeech#setVoice(Voice)}). |
| */ |
| @Deprecated |
| public static final String KEY_FEATURE_EMBEDDED_SYNTHESIS = "embeddedTts"; |
| |
| /** |
| * Parameter key to specify an audio session identifier (obtained from |
| * {@link AudioManager#generateAudioSessionId()}) that will be used by the request audio |
| * output. It can be used to associate one of the {@link android.media.audiofx.AudioEffect} |
| * objects with the synthesis (or earcon) output. |
| * |
| * @see TextToSpeech#speak(CharSequence, int, Bundle, String) |
| * @see TextToSpeech#playEarcon(String, int, HashMap) |
| */ |
| public static final String KEY_PARAM_SESSION_ID = "sessionId"; |
| |
| /** |
| * Feature key that indicates that the voice may need to download additional data to be fully |
| * functional. The download will be triggered by calling |
| * {@link TextToSpeech#setVoice(Voice)} or {@link TextToSpeech#setLanguage(Locale)}. |
| * Until download is complete, each synthesis request will either report |
| * {@link TextToSpeech#ERROR_NOT_INSTALLED_YET} error, or use a different voice to synthesize |
| * the request. This feature should NOT be used as a key of a request parameter. |
| * |
| * @see TextToSpeech#getFeatures(java.util.Locale) |
| * @see Voice#getFeatures() |
| */ |
| public static final String KEY_FEATURE_NOT_INSTALLED = "notInstalled"; |
| |
| /** |
| * Feature key that indicate that a network timeout can be set for the request. If set and |
| * supported as per {@link TextToSpeech#getFeatures(Locale)} or {@link Voice#getFeatures()}, |
| * it can be used as request parameter to set the maximum allowed time for a single |
| * request attempt, in milliseconds, before synthesis fails. When used as a key of |
| * a request parameter, its value should be a string with an integer value. |
| * |
| * @see TextToSpeech#getFeatures(java.util.Locale) |
| * @see Voice#getFeatures() |
| */ |
| public static final String KEY_FEATURE_NETWORK_TIMEOUT_MS = "networkTimeoutMs"; |
| |
| /** |
| * Feature key that indicates that network request retries count can be set for the request. |
| * If set and supported as per {@link TextToSpeech#getFeatures(Locale)} or |
| * {@link Voice#getFeatures()}, it can be used as a request parameter to set the |
| * number of network request retries that are attempted in case of failure. When used as |
| * a key of a request parameter, its value should be a string with an integer value. |
| * |
| * @see TextToSpeech#getFeatures(java.util.Locale) |
| * @see Voice#getFeatures() |
| */ |
| public static final String KEY_FEATURE_NETWORK_RETRIES_COUNT = "networkRetriesCount"; |
| } |
| |
| private static final boolean DEBUG = false; |
| |
| private final Context mContext; |
| @UnsupportedAppUsage |
| private Connection mConnectingServiceConnection; |
| private Connection mServiceConnection; |
| @UnsupportedAppUsage |
| private OnInitListener mInitListener; |
| // Written from an unspecified application thread, read from |
| // a binder thread. |
| @Nullable private volatile UtteranceProgressListener mUtteranceProgressListener; |
| private final Object mStartLock = new Object(); |
| |
| private String mRequestedEngine; |
| // Whether to initialize this TTS object with the default engine, |
| // if the requested engine is not available. Valid only if mRequestedEngine |
| // is not null. Used only for testing, though potentially useful API wise |
| // too. |
| private final boolean mUseFallback; |
| private final Map<String, Uri> mEarcons; |
| 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; |
| |
| /** |
| * The constructor for the TextToSpeech class, using the default TTS engine. |
| * This will also initialize the associated TextToSpeech engine if it isn't already running. |
| * |
| * @param context |
| * The context this instance is running in. |
| * @param listener |
| * The {@link TextToSpeech.OnInitListener} that will be called when the |
| * TextToSpeech engine has initialized. In a case of a failure the listener |
| * may be called immediately, before TextToSpeech instance is fully constructed. |
| */ |
| public TextToSpeech(Context context, OnInitListener listener) { |
| this(context, listener, null); |
| } |
| |
| /** |
| * The constructor for the TextToSpeech class, using the given TTS engine. |
| * This will also initialize the associated TextToSpeech engine if it isn't already running. |
| * |
| * @param context |
| * The context this instance is running in. |
| * @param listener |
| * The {@link TextToSpeech.OnInitListener} that will be called when the |
| * TextToSpeech engine has initialized. In a case of a failure the listener |
| * may be called immediately, before TextToSpeech instance is fully constructed. |
| * @param engine Package name of the TTS engine to use. |
| */ |
| public TextToSpeech(Context context, OnInitListener listener, String engine) { |
| this(context, listener, engine, null, true); |
| } |
| |
| /** |
| * Used by the framework to instantiate TextToSpeech objects with a supplied |
| * package name, instead of using {@link android.content.Context#getPackageName()} |
| * |
| * @hide |
| */ |
| 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; |
| mInitExecutor = initExecutor; |
| mInitListener = initListener; |
| mRequestedEngine = engine; |
| mUseFallback = useFallback; |
| |
| mEarcons = new HashMap<String, Uri>(); |
| mUtterances = new HashMap<CharSequence, Uri>(); |
| mUtteranceProgressListener = null; |
| |
| mEnginesHelper = new TtsEngines(mContext); |
| |
| mIsSystem = isSystem; |
| |
| addDeviceSpecificSessionIdToParams(mContext, mParams); |
| initTts(); |
| } |
| |
| /** |
| * Add {@link VirtualDevice} specific playback audio session associated with context to |
| * parameters {@link Bundle} if applicable. |
| * |
| * @param context - {@link Context} context instance to extract the device specific audio |
| * session id from. |
| * @param params - {@link Bundle} to add the device specific audio session id to. |
| */ |
| private static void addDeviceSpecificSessionIdToParams( |
| @NonNull Context context, @NonNull Bundle params) { |
| int audioSessionId = getDeviceSpecificPlaybackSessionId(context); |
| if (audioSessionId != AUDIO_SESSION_ID_GENERATE) { |
| params.putInt(Engine.KEY_PARAM_SESSION_ID, audioSessionId); |
| } |
| } |
| |
| /** |
| * Helper method to fetch {@link VirtualDevice} specific playback audio session id for given |
| * {@link Context} instance. |
| * |
| * @param context - {@link Context} to fetch the audio sesion id for. |
| * @return audio session id corresponding to {@link VirtualDevice} in case the context is |
| * associated with {@link VirtualDevice} configured with specific audio session id, |
| * {@link AudioManager#AUDIO_SESSION_ID_GENERATE} otherwise. |
| * @see android.companion.virtual.VirtualDeviceManager#getAudioPlaybackSessionId(int) |
| */ |
| private static int getDeviceSpecificPlaybackSessionId(@NonNull Context context) { |
| int deviceId = context.getDeviceId(); |
| if (deviceId == DEVICE_ID_DEFAULT) { |
| return AUDIO_SESSION_ID_GENERATE; |
| } |
| VirtualDeviceManager vdm = context.getSystemService(VirtualDeviceManager.class); |
| if (vdm == null) { |
| return AUDIO_SESSION_ID_GENERATE; |
| } |
| return vdm.getAudioPlaybackSessionId(deviceId); |
| } |
| |
| private <R> R runActionNoReconnect(Action<R> action, R errorResult, String method, |
| boolean onlyEstablishedConnection) { |
| return runAction(action, errorResult, method, false, onlyEstablishedConnection); |
| } |
| |
| private <R> R runAction(Action<R> action, R errorResult, String method) { |
| return runAction(action, errorResult, method, true, true); |
| } |
| |
| private <R> R runAction(Action<R> action, R errorResult, String method, |
| boolean reconnect, boolean onlyEstablishedConnection) { |
| synchronized (mStartLock) { |
| if (mServiceConnection == null) { |
| Log.w(TAG, method + " failed: not bound to TTS engine"); |
| return errorResult; |
| } |
| return mServiceConnection.runAction(action, errorResult, method, reconnect, |
| onlyEstablishedConnection); |
| } |
| } |
| |
| private int initTts() { |
| // Step 1: Try connecting to the engine that was requested. |
| if (mRequestedEngine != null) { |
| if (mEnginesHelper.isEngineInstalled(mRequestedEngine)) { |
| if (connectToEngine(mRequestedEngine)) { |
| mCurrentEngine = mRequestedEngine; |
| return SUCCESS; |
| } else if (!mUseFallback) { |
| mCurrentEngine = null; |
| dispatchOnInit(ERROR); |
| return ERROR; |
| } |
| } else if (!mUseFallback) { |
| Log.i(TAG, "Requested engine not installed: " + mRequestedEngine); |
| mCurrentEngine = null; |
| dispatchOnInit(ERROR); |
| return ERROR; |
| } |
| } |
| |
| // Step 2: Try connecting to the user's default engine. |
| final String defaultEngine = getDefaultEngine(); |
| if (defaultEngine != null && !defaultEngine.equals(mRequestedEngine)) { |
| if (connectToEngine(defaultEngine)) { |
| mCurrentEngine = defaultEngine; |
| return SUCCESS; |
| } |
| } |
| |
| // Step 3: Try connecting to the highest ranked engine in the |
| // system. |
| final String highestRanked = mEnginesHelper.getHighestRankedEngineName(); |
| if (highestRanked != null && !highestRanked.equals(mRequestedEngine) && |
| !highestRanked.equals(defaultEngine)) { |
| if (connectToEngine(highestRanked)) { |
| mCurrentEngine = highestRanked; |
| return SUCCESS; |
| } |
| } |
| |
| // NOTE: The API currently does not allow the caller to query whether |
| // they are actually connected to any engine. This might fail for various |
| // reasons like if the user disables all their TTS engines. |
| |
| mCurrentEngine = null; |
| dispatchOnInit(ERROR); |
| return ERROR; |
| } |
| |
| private boolean connectToEngine(String engine) { |
| 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; |
| } else { |
| Log.i(TAG, "Sucessfully bound to " + engine); |
| mConnectingServiceConnection = connection; |
| return true; |
| } |
| } |
| |
| private void dispatchOnInit(int result) { |
| Runnable onInitCommand = () -> { |
| synchronized (mStartLock) { |
| if (mInitListener != null) { |
| mInitListener.onInit(result); |
| mInitListener = null; |
| } |
| } |
| }; |
| |
| if (mInitExecutor != null) { |
| mInitExecutor.execute(onInitCommand); |
| } else { |
| onInitCommand.run(); |
| } |
| } |
| |
| private IBinder getCallerIdentity() { |
| return mServiceConnection.getCallerIdentity(); |
| } |
| |
| /** |
| * Releases the resources used by the TextToSpeech engine. |
| * It is good practice for instance to call this method in the onDestroy() method of an Activity |
| * so the TextToSpeech engine can be cleanly stopped. |
| */ |
| public void shutdown() { |
| // Special case, we are asked to shutdown connection that did finalize its connection. |
| synchronized (mStartLock) { |
| if (mConnectingServiceConnection != null) { |
| mConnectingServiceConnection.disconnect(); |
| mConnectingServiceConnection = null; |
| return; |
| } |
| } |
| |
| // Post connection case |
| runActionNoReconnect((ITextToSpeechService service) -> { |
| service.setCallback(getCallerIdentity(), null); |
| service.stop(getCallerIdentity()); |
| mServiceConnection.disconnect(); |
| // Context#unbindService does not result in a call to |
| // ServiceConnection#onServiceDisconnected. As a result, the |
| // service ends up being destroyed (if there are no other open |
| // connections to it) but the process lives on and the |
| // ServiceConnection continues to refer to the destroyed service. |
| // |
| // This leads to tons of log spam about SynthThread being dead. |
| mServiceConnection = null; |
| mCurrentEngine = null; |
| return null; |
| }, null, "shutdown", false); |
| } |
| |
| /** |
| * Adds a mapping between a string of text and a sound resource in a |
| * package. After a call to this method, subsequent calls to |
| * {@link #speak(CharSequence, int, Bundle, String)} will play the specified sound resource |
| * if it is available, or synthesize the text it is missing. |
| * |
| * @param text |
| * The string of text. Example: <code>"south_south_east"</code> |
| * |
| * @param packagename |
| * Pass the packagename of the application that contains the |
| * resource. If the resource is in your own application (this is |
| * the most common case), then put the packagename of your |
| * application here.<br/> |
| * Example: <b>"com.google.marvin.compass"</b><br/> |
| * The packagename can be found in the AndroidManifest.xml of |
| * your application. |
| * <p> |
| * <code><manifest xmlns:android="..." |
| * package="<b>com.google.marvin.compass</b>"></code> |
| * </p> |
| * |
| * @param resourceId |
| * Example: <code>R.raw.south_south_east</code> |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addSpeech(String text, String packagename, @RawRes int resourceId) { |
| return addSpeech(text, makeResourceUri(packagename, resourceId)); |
| } |
| |
| /** |
| * Adds a mapping between a CharSequence (may be spanned with TtsSpans) of text |
| * and a sound resource in a package. After a call to this method, subsequent calls to |
| * {@link #speak(CharSequence, int, Bundle, String)} will play the specified sound resource |
| * if it is available, or synthesize the text it is missing. |
| * |
| * @param text |
| * The string of text. Example: <code>"south_south_east"</code> |
| * |
| * @param packagename |
| * Pass the packagename of the application that contains the |
| * resource. If the resource is in your own application (this is |
| * the most common case), then put the packagename of your |
| * application here.<br/> |
| * Example: <b>"com.google.marvin.compass"</b><br/> |
| * The packagename can be found in the AndroidManifest.xml of |
| * your application. |
| * <p> |
| * <code><manifest xmlns:android="..." |
| * package="<b>com.google.marvin.compass</b>"></code> |
| * </p> |
| * |
| * @param resourceId |
| * Example: <code>R.raw.south_south_east</code> |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addSpeech(CharSequence text, String packagename, @RawRes int resourceId) { |
| return addSpeech(text, makeResourceUri(packagename, resourceId)); |
| } |
| |
| /** |
| * Adds a mapping between a string of text and a sound file. Using this, it is possible to |
| * add custom pronounciations for a string of text. After a call to this method, subsequent |
| * calls to {@link #speak(CharSequence, int, Bundle, String)} will play the specified sound |
| * resource if it is available, or synthesize the text it is missing. |
| * |
| * @param text |
| * The string of text. Example: <code>"south_south_east"</code> |
| * @param filename |
| * The full path to the sound file (for example: |
| * "/sdcard/mysounds/hello.wav") |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addSpeech(String text, String filename) { |
| return addSpeech(text, Uri.parse(filename)); |
| } |
| |
| /** |
| * Adds a mapping between a CharSequence (may be spanned with TtsSpans) and a sound file. |
| * Using this, it is possible to add custom pronounciations for a string of text. After a call |
| * to this method, subsequent calls to {@link #speak(CharSequence, int, Bundle, String)} |
| * will play the specified sound resource if it is available, or synthesize the text it is |
| * missing. |
| * |
| * @param text |
| * The string of text. Example: <code>"south_south_east"</code> |
| * @param file |
| * File object pointing to the sound file. |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addSpeech(CharSequence text, File file) { |
| return addSpeech(text, Uri.fromFile(file)); |
| } |
| |
| /** |
| * Adds a mapping between a CharSequence (may be spanned with TtsSpans) and a sound file. |
| * Using this, it is possible to add custom pronounciations for a string of text. After a call |
| * to this method, subsequent calls to {@link #speak(CharSequence, int, Bundle, String)} |
| * will play the specified sound resource if it is available, or synthesize the text it is |
| * missing. |
| * |
| * @param text |
| * The string of text. Example: <code>"south_south_east"</code> |
| * @param uri |
| * Uri object pointing to the sound file. |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addSpeech(@NonNull CharSequence text, @NonNull Uri uri) { |
| synchronized (mStartLock) { |
| mUtterances.put(text, uri); |
| return SUCCESS; |
| } |
| } |
| |
| /** |
| * Adds a mapping between a string of text and a sound resource in a |
| * package. Use this to add custom earcons. |
| * |
| * @see #playEarcon(String, int, HashMap) |
| * |
| * @param earcon The name of the earcon. |
| * Example: <code>"[tick]"</code><br/> |
| * |
| * @param packagename |
| * the package name of the application that contains the |
| * resource. This can for instance be the package name of your own application. |
| * Example: <b>"com.google.marvin.compass"</b><br/> |
| * The package name can be found in the AndroidManifest.xml of |
| * the application containing the resource. |
| * <p> |
| * <code><manifest xmlns:android="..." |
| * package="<b>com.google.marvin.compass</b>"></code> |
| * </p> |
| * |
| * @param resourceId |
| * Example: <code>R.raw.tick_snd</code> |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addEarcon(String earcon, String packagename, @RawRes int resourceId) { |
| return addEarcon(earcon, makeResourceUri(packagename, resourceId)); |
| } |
| |
| /** |
| * Adds a mapping between a string of text and a sound file. |
| * Use this to add custom earcons. |
| * |
| * @see #playEarcon(String, int, HashMap) |
| * |
| * @param earcon |
| * The name of the earcon. |
| * Example: <code>"[tick]"</code> |
| * @param filename |
| * The full path to the sound file (for example: |
| * "/sdcard/mysounds/tick.wav") |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| * |
| * @deprecated As of API level 21, replaced by |
| * {@link #addEarcon(String, File)}. |
| */ |
| @Deprecated |
| public int addEarcon(String earcon, String filename) { |
| return addEarcon(earcon, Uri.parse(filename)); |
| } |
| |
| /** |
| * Adds a mapping between a string of text and a sound file. |
| * Use this to add custom earcons. |
| * |
| * @see #playEarcon(String, int, HashMap) |
| * |
| * @param earcon |
| * The name of the earcon. |
| * Example: <code>"[tick]"</code> |
| * @param file |
| * File object pointing to the sound file. |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addEarcon(String earcon, File file) { |
| return addEarcon(earcon, Uri.fromFile(file)); |
| } |
| |
| /** |
| * Adds a mapping between a string of text and a sound file. |
| * Use this to add custom earcons. |
| * |
| * @see #playEarcon(String, int, HashMap) |
| * |
| * @param earcon |
| * The name of the earcon. |
| * Example: <code>"[tick]"</code> |
| * @param uri |
| * Uri object pointing to the sound file. |
| * |
| * @return Code indicating success or failure. See {@link #ERROR} and {@link #SUCCESS}. |
| */ |
| public int addEarcon(@NonNull String earcon, @NonNull Uri uri) { |
| synchronized(mStartLock) { |
| mEarcons.put(earcon, uri); |
| return SUCCESS; |
| } |
| } |
| |
| private Uri makeResourceUri(String packageName, int resourceId) { |
| return new Uri.Builder() |
| .scheme(ContentResolver.SCHEME_ANDROID_RESOURCE) |
| .encodedAuthority(packageName) |
| .appendEncodedPath(String.valueOf(resourceId)) |
| .build(); |
| } |
| |
| /** |
| * Speaks the text using the specified queuing strategy and speech parameters, the text may |
| * be spanned with TtsSpans. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param text The string of text to be spoken. No longer than |
| * {@link #getMaxSpeechInputLength()} characters. |
| * @param queueMode The queuing strategy to use, {@link #QUEUE_ADD} or {@link #QUEUE_FLUSH}. |
| * @param params Parameters for the request. Can be null. |
| * Supported parameter names: |
| * {@link Engine#KEY_PARAM_STREAM}, |
| * {@link Engine#KEY_PARAM_VOLUME}, |
| * {@link Engine#KEY_PARAM_PAN}. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * @param utteranceId An unique identifier for this request. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the speak operation. |
| */ |
| public int speak(final CharSequence text, |
| final int queueMode, |
| final Bundle params, |
| final String utteranceId) { |
| return runAction((ITextToSpeechService service) -> { |
| Uri utteranceUri = mUtterances.get(text); |
| if (utteranceUri != null) { |
| return service.playAudio(getCallerIdentity(), utteranceUri, queueMode, |
| getParams(params), utteranceId); |
| } else { |
| return service.speak(getCallerIdentity(), text, queueMode, getParams(params), |
| utteranceId); |
| } |
| }, ERROR, "speak"); |
| } |
| |
| /** |
| * Speaks the string using the specified queuing strategy and speech parameters. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param text The string of text to be spoken. No longer than |
| * {@link #getMaxSpeechInputLength()} characters. |
| * @param queueMode The queuing strategy to use, {@link #QUEUE_ADD} or {@link #QUEUE_FLUSH}. |
| * @param params Parameters for the request. Can be null. |
| * Supported parameter names: |
| * {@link Engine#KEY_PARAM_STREAM}, |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID}, |
| * {@link Engine#KEY_PARAM_VOLUME}, |
| * {@link Engine#KEY_PARAM_PAN}. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the speak operation. |
| * @deprecated As of API level 21, replaced by |
| * {@link #speak(CharSequence, int, Bundle, String)}. |
| */ |
| @Deprecated |
| public int speak(final String text, final int queueMode, final HashMap<String, String> params) { |
| return speak(text, queueMode, convertParamsHashMaptoBundle(params), |
| params == null ? null : params.get(Engine.KEY_PARAM_UTTERANCE_ID)); |
| } |
| |
| /** |
| * Plays the earcon using the specified queueing mode and parameters. |
| * The earcon must already have been added with {@link #addEarcon(String, String)} or |
| * {@link #addEarcon(String, String, int)}. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param earcon The earcon that should be played |
| * @param queueMode {@link #QUEUE_ADD} or {@link #QUEUE_FLUSH}. |
| * @param params Parameters for the request. Can be null. |
| * Supported parameter names: |
| * {@link Engine#KEY_PARAM_STREAM}, |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the playEarcon operation. |
| */ |
| public int playEarcon(final String earcon, final int queueMode, |
| final Bundle params, final String utteranceId) { |
| return runAction((ITextToSpeechService service) -> { |
| Uri earconUri = mEarcons.get(earcon); |
| if (earconUri == null) { |
| return ERROR; |
| } |
| return service.playAudio(getCallerIdentity(), earconUri, queueMode, |
| getParams(params), utteranceId); |
| }, ERROR, "playEarcon"); |
| } |
| |
| /** |
| * Plays the earcon using the specified queueing mode and parameters. |
| * The earcon must already have been added with {@link #addEarcon(String, String)} or |
| * {@link #addEarcon(String, String, int)}. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param earcon The earcon that should be played |
| * @param queueMode {@link #QUEUE_ADD} or {@link #QUEUE_FLUSH}. |
| * @param params Parameters for the request. Can be null. |
| * Supported parameter names: |
| * {@link Engine#KEY_PARAM_STREAM}, |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID}. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the playEarcon operation. |
| * @deprecated As of API level 21, replaced by |
| * {@link #playEarcon(String, int, Bundle, String)}. |
| */ |
| @Deprecated |
| public int playEarcon(final String earcon, final int queueMode, |
| final HashMap<String, String> params) { |
| return playEarcon(earcon, queueMode, convertParamsHashMaptoBundle(params), |
| params == null ? null : params.get(Engine.KEY_PARAM_UTTERANCE_ID)); |
| } |
| |
| /** |
| * Plays silence for the specified amount of time using the specified |
| * queue mode. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param durationInMs The duration of the silence. |
| * @param queueMode {@link #QUEUE_ADD} or {@link #QUEUE_FLUSH}. |
| * @param utteranceId An unique identifier for this request. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the playSilentUtterance operation. |
| */ |
| public int playSilentUtterance(final long durationInMs, final int queueMode, |
| final String utteranceId) { |
| return runAction((ITextToSpeechService service) -> { |
| return service.playSilence(getCallerIdentity(), durationInMs, |
| queueMode, utteranceId); |
| }, ERROR, "playSilentUtterance"); |
| } |
| |
| /** |
| * Plays silence for the specified amount of time using the specified |
| * queue mode. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param durationInMs The duration of the silence. |
| * @param queueMode {@link #QUEUE_ADD} or {@link #QUEUE_FLUSH}. |
| * @param params Parameters for the request. Can be null. |
| * Supported parameter names: |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID}. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the playSilence operation. |
| * @deprecated As of API level 21, replaced by |
| * {@link #playSilentUtterance(long, int, String)}. |
| */ |
| @Deprecated |
| public int playSilence(final long durationInMs, final int queueMode, |
| final HashMap<String, String> params) { |
| return playSilentUtterance(durationInMs, queueMode, |
| params == null ? null : params.get(Engine.KEY_PARAM_UTTERANCE_ID)); |
| } |
| |
| /** |
| * Queries the engine for the set of features it supports for a given locale. |
| * Features can either be framework defined, e.g. |
| * {@link TextToSpeech.Engine#KEY_FEATURE_NETWORK_SYNTHESIS} or engine specific. |
| * Engine specific keys must be prefixed by the name of the engine they |
| * are intended for. These keys can be used as parameters to |
| * {@link TextToSpeech#speak(String, int, java.util.HashMap)} and |
| * {@link TextToSpeech#synthesizeToFile(String, java.util.HashMap, String)}. |
| * |
| * Features values are strings and their values must meet restrictions described in their |
| * documentation. |
| * |
| * @param locale The locale to query features for. |
| * @return Set instance. May return {@code null} on error. |
| * @deprecated As of API level 21, please use voices. In order to query features of the voice, |
| * call {@link #getVoices()} to retrieve the list of available voices and |
| * {@link Voice#getFeatures()} to retrieve the set of features. |
| */ |
| @Deprecated |
| public Set<String> getFeatures(final Locale locale) { |
| return runAction((ITextToSpeechService service) -> { |
| String[] features = null; |
| try { |
| features = service.getFeaturesForLanguage( |
| locale.getISO3Language(), locale.getISO3Country(), locale.getVariant()); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve 3 letter ISO 639-2/T language and/or ISO 3166 " |
| + "country code for locale: " + locale, e); |
| return null; |
| } |
| |
| if (features != null) { |
| final Set<String> featureSet = new HashSet<String>(); |
| Collections.addAll(featureSet, features); |
| return featureSet; |
| } |
| return null; |
| }, null, "getFeatures"); |
| } |
| |
| /** |
| * Checks whether the TTS engine is busy speaking. Note that a speech item is |
| * considered complete once it's audio data has been sent to the audio mixer, or |
| * written to a file. There might be a finite lag between this point, and when |
| * the audio hardware completes playback. |
| * |
| * @return {@code true} if the TTS engine is speaking. |
| */ |
| public boolean isSpeaking() { |
| return runAction((ITextToSpeechService service) -> { |
| return service.isSpeaking(); |
| }, false, "isSpeaking"); |
| } |
| |
| /** |
| * Interrupts the current utterance (whether played or rendered to file) and discards other |
| * utterances in the queue. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| */ |
| public int stop() { |
| return runAction((ITextToSpeechService service) -> { |
| return service.stop(getCallerIdentity()); |
| }, ERROR, "stop"); |
| } |
| |
| /** |
| * Sets the speech rate. |
| * |
| * This has no effect on any pre-recorded speech. |
| * |
| * @param speechRate Speech rate. {@code 1.0} is the normal speech rate, |
| * lower values slow down the speech ({@code 0.5} is half the normal speech rate), |
| * greater values accelerate it ({@code 2.0} is twice the normal speech rate). |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| */ |
| public int setSpeechRate(float speechRate) { |
| if (speechRate > 0.0f) { |
| int intRate = (int)(speechRate * 100); |
| if (intRate > 0) { |
| synchronized (mStartLock) { |
| mParams.putInt(Engine.KEY_PARAM_RATE, intRate); |
| } |
| return SUCCESS; |
| } |
| } |
| return ERROR; |
| } |
| |
| /** |
| * Sets the speech pitch for the TextToSpeech engine. |
| * |
| * This has no effect on any pre-recorded speech. |
| * |
| * @param pitch Speech pitch. {@code 1.0} is the normal pitch, |
| * lower values lower the tone of the synthesized voice, |
| * greater values increase it. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| */ |
| public int setPitch(float pitch) { |
| if (pitch > 0.0f) { |
| int intPitch = (int)(pitch * 100); |
| if (intPitch > 0) { |
| synchronized (mStartLock) { |
| mParams.putInt(Engine.KEY_PARAM_PITCH, intPitch); |
| } |
| return SUCCESS; |
| } |
| } |
| return ERROR; |
| } |
| |
| /** |
| * Sets the audio attributes to be used when speaking text or playing |
| * back a file. |
| * |
| * @param audioAttributes Valid AudioAttributes instance. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| */ |
| public int setAudioAttributes(AudioAttributes audioAttributes) { |
| if (audioAttributes != null) { |
| synchronized (mStartLock) { |
| mParams.putParcelable(Engine.KEY_PARAM_AUDIO_ATTRIBUTES, |
| audioAttributes); |
| } |
| return SUCCESS; |
| } |
| return ERROR; |
| } |
| |
| /** |
| * @return the engine currently in use by this TextToSpeech instance. |
| * @hide |
| */ |
| @UnsupportedAppUsage |
| public String getCurrentEngine() { |
| return mCurrentEngine; |
| } |
| |
| /** |
| * Returns a Locale instance describing the language currently being used as the default |
| * Text-to-speech language. |
| * |
| * The locale object returned by this method is NOT a valid one. It has identical form to the |
| * one in {@link #getLanguage()}. Please refer to {@link #getLanguage()} for more information. |
| * |
| * @return language, country (if any) and variant (if any) used by the client stored in a |
| * Locale instance, or {@code null} on error. |
| * @deprecated As of API level 21, use <code>getDefaultVoice().getLocale()</code> ({@link |
| * #getDefaultVoice()}) |
| */ |
| @Deprecated |
| public Locale getDefaultLanguage() { |
| return runAction((ITextToSpeechService service) -> { |
| String[] defaultLanguage = service.getClientDefaultLanguage(); |
| |
| return new Locale(defaultLanguage[0], defaultLanguage[1], defaultLanguage[2]); |
| }, null, "getDefaultLanguage"); |
| } |
| |
| /** |
| * Sets the text-to-speech language. |
| * The TTS engine will try to use the closest match to the specified |
| * language as represented by the Locale, but there is no guarantee that the exact same Locale |
| * will be used. Use {@link #isLanguageAvailable(Locale)} to check the level of support |
| * before choosing the language to use for the next utterances. |
| * |
| * This method sets the current voice to the default one for the given Locale; |
| * {@link #getVoice()} can be used to retrieve it. |
| * |
| * @param loc The locale describing the language to be used. |
| * |
| * @return Code indicating the support status for the locale. See {@link #LANG_AVAILABLE}, |
| * {@link #LANG_COUNTRY_AVAILABLE}, {@link #LANG_COUNTRY_VAR_AVAILABLE}, |
| * {@link #LANG_MISSING_DATA} and {@link #LANG_NOT_SUPPORTED}. |
| */ |
| public int setLanguage(final Locale loc) { |
| return runAction((ITextToSpeechService service) -> { |
| if (loc == null) { |
| return LANG_NOT_SUPPORTED; |
| } |
| String language = null, country = null; |
| try { |
| language = loc.getISO3Language(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 639-2/T language code for locale: " + loc, e); |
| return LANG_NOT_SUPPORTED; |
| } |
| |
| try { |
| country = loc.getISO3Country(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 3166 country code for locale: " + loc, e); |
| return LANG_NOT_SUPPORTED; |
| } |
| |
| String variant = loc.getVariant(); |
| |
| // As of API level 21, setLanguage is implemented using setVoice. |
| // (which, in the default implementation, will call loadLanguage on the service |
| // interface). |
| |
| // Sanitize locale using isLanguageAvailable. |
| int result = service.isLanguageAvailable(language, country, variant); |
| if (result >= LANG_AVAILABLE) { |
| // Get the default voice for the locale. |
| String voiceName = service.getDefaultVoiceNameFor(language, country, variant); |
| if (TextUtils.isEmpty(voiceName)) { |
| Log.w(TAG, "Couldn't find the default voice for " + language + "-" |
| + country + "-" + variant); |
| return LANG_NOT_SUPPORTED; |
| } |
| |
| // Load it. |
| if (service.loadVoice(getCallerIdentity(), voiceName) == TextToSpeech.ERROR) { |
| Log.w(TAG, "The service claimed " + language + "-" + country + "-" |
| + variant + " was available with voice name " + voiceName |
| + " but loadVoice returned ERROR"); |
| return LANG_NOT_SUPPORTED; |
| } |
| |
| // Set the language/country/variant of the voice, so #getLanguage will return |
| // the currently set voice locale when called. |
| Voice voice = getVoice(service, voiceName); |
| if (voice == null) { |
| Log.w(TAG, "getDefaultVoiceNameFor returned " + voiceName + " for locale " |
| + language + "-" + country + "-" + variant |
| + " but getVoice returns null"); |
| return LANG_NOT_SUPPORTED; |
| } |
| String voiceLanguage = ""; |
| try { |
| voiceLanguage = voice.getLocale().getISO3Language(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 639-2/T language code for locale: " |
| + voice.getLocale(), e); |
| } |
| |
| String voiceCountry = ""; |
| try { |
| voiceCountry = voice.getLocale().getISO3Country(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 3166 country code for locale: " |
| + voice.getLocale(), e); |
| } |
| mParams.putString(Engine.KEY_PARAM_VOICE_NAME, voiceName); |
| mParams.putString(Engine.KEY_PARAM_LANGUAGE, voiceLanguage); |
| mParams.putString(Engine.KEY_PARAM_COUNTRY, voiceCountry); |
| mParams.putString(Engine.KEY_PARAM_VARIANT, voice.getLocale().getVariant()); |
| } |
| return result; |
| }, LANG_NOT_SUPPORTED, "setLanguage"); |
| } |
| |
| /** |
| * Returns a Locale instance describing the language currently being used for synthesis |
| * requests sent to the TextToSpeech engine. |
| * |
| * In Android 4.2 and before (API <= 17) this function returns the language that is currently |
| * being used by the TTS engine. That is the last language set by this or any other |
| * client by a {@link TextToSpeech#setLanguage} call to the same engine. |
| * |
| * In Android versions after 4.2 this function returns the language that is currently being |
| * used for the synthesis requests sent from this client. That is the last language set |
| * by a {@link TextToSpeech#setLanguage} call on this instance. |
| * |
| * If a voice is set (by {@link #setVoice(Voice)}), getLanguage will return the language of |
| * the currently set voice. |
| * |
| * Please note that the Locale object returned by this method is NOT a valid Locale object. Its |
| * language field contains a three-letter ISO 639-2/T code (where a proper Locale would use |
| * a two-letter ISO 639-1 code), and the country field contains a three-letter ISO 3166 country |
| * code (where a proper Locale would use a two-letter ISO 3166-1 code). |
| * |
| * @return language, country (if any) and variant (if any) used by the client stored in a |
| * Locale instance, or {@code null} on error. |
| * |
| * @deprecated As of API level 21, please use <code>getVoice().getLocale()</code> |
| * ({@link #getVoice()}). |
| */ |
| @Deprecated |
| public Locale getLanguage() { |
| return runAction((ITextToSpeechService service) -> { |
| /* No service call, but we're accessing mParams, hence need for |
| wrapping it as an Action instance */ |
| String lang = mParams.getString(Engine.KEY_PARAM_LANGUAGE, ""); |
| String country = mParams.getString(Engine.KEY_PARAM_COUNTRY, ""); |
| String variant = mParams.getString(Engine.KEY_PARAM_VARIANT, ""); |
| return new Locale(lang, country, variant); |
| }, null, "getLanguage"); |
| } |
| |
| /** |
| * Query the engine about the set of available languages. |
| */ |
| public Set<Locale> getAvailableLanguages() { |
| return runAction((ITextToSpeechService service) -> { |
| List<Voice> voices = service.getVoices(); |
| if (voices == null) { |
| return new HashSet<Locale>(); |
| } |
| HashSet<Locale> locales = new HashSet<Locale>(); |
| for (Voice voice : voices) { |
| locales.add(voice.getLocale()); |
| } |
| return locales; |
| }, null, "getAvailableLanguages"); |
| } |
| |
| /** |
| * Query the engine about the set of available voices. |
| * |
| * Each TTS Engine can expose multiple voices for each locale, each with a different set of |
| * features. |
| * |
| * @see #setVoice(Voice) |
| * @see Voice |
| */ |
| public Set<Voice> getVoices() { |
| return runAction((ITextToSpeechService service) -> { |
| List<Voice> voices = service.getVoices(); |
| return (voices != null) ? new HashSet<Voice>(voices) : new HashSet<Voice>(); |
| }, null, "getVoices"); |
| } |
| |
| /** |
| * Sets the text-to-speech voice. |
| * |
| * @param voice One of objects returned by {@link #getVoices()}. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| * |
| * @see #getVoices |
| * @see Voice |
| */ |
| public int setVoice(final Voice voice) { |
| return runAction((ITextToSpeechService service) -> { |
| int result = service.loadVoice(getCallerIdentity(), voice.getName()); |
| if (result == SUCCESS) { |
| mParams.putString(Engine.KEY_PARAM_VOICE_NAME, voice.getName()); |
| |
| // Set the language/country/variant, so #getLanguage will return the voice |
| // locale when called. |
| String language = ""; |
| try { |
| language = voice.getLocale().getISO3Language(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 639-2/T language code for locale: " |
| + voice.getLocale(), e); |
| } |
| |
| String country = ""; |
| try { |
| country = voice.getLocale().getISO3Country(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 3166 country code for locale: " |
| + voice.getLocale(), e); |
| } |
| mParams.putString(Engine.KEY_PARAM_LANGUAGE, language); |
| mParams.putString(Engine.KEY_PARAM_COUNTRY, country); |
| mParams.putString(Engine.KEY_PARAM_VARIANT, voice.getLocale().getVariant()); |
| } |
| return result; |
| }, LANG_NOT_SUPPORTED, "setVoice"); |
| } |
| |
| /** |
| * Returns a Voice instance describing the voice currently being used for synthesis |
| * requests sent to the TextToSpeech engine. |
| * |
| * @return Voice instance used by the client, or {@code null} if not set or on error. |
| * |
| * @see #getVoices |
| * @see #setVoice |
| * @see Voice |
| */ |
| public Voice getVoice() { |
| return runAction((ITextToSpeechService service) -> { |
| String voiceName = mParams.getString(Engine.KEY_PARAM_VOICE_NAME, ""); |
| if (TextUtils.isEmpty(voiceName)) { |
| return null; |
| } |
| return getVoice(service, voiceName); |
| }, null, "getVoice"); |
| } |
| |
| |
| /** |
| * Returns a Voice instance of the voice with the given voice name. |
| * |
| * @return Voice instance with the given voice name, or {@code null} if not set or on error. |
| * |
| * @see Voice |
| */ |
| private Voice getVoice(ITextToSpeechService service, String voiceName) throws RemoteException { |
| List<Voice> voices = service.getVoices(); |
| if (voices == null) { |
| Log.w(TAG, "getVoices returned null"); |
| return null; |
| } |
| for (Voice voice : voices) { |
| if (voice.getName().equals(voiceName)) { |
| return voice; |
| } |
| } |
| Log.w(TAG, "Could not find voice " + voiceName + " in voice list"); |
| return null; |
| } |
| |
| /** |
| * Returns a Voice instance that's the default voice for the default Text-to-speech language. |
| * @return The default voice instance for the default language, or {@code null} if not set or |
| * on error. |
| */ |
| public Voice getDefaultVoice() { |
| return runAction((ITextToSpeechService service) -> { |
| |
| String[] defaultLanguage = service.getClientDefaultLanguage(); |
| |
| if (defaultLanguage == null || defaultLanguage.length == 0) { |
| Log.e(TAG, "service.getClientDefaultLanguage() returned empty array"); |
| return null; |
| } |
| String language = defaultLanguage[0]; |
| String country = (defaultLanguage.length > 1) ? defaultLanguage[1] : ""; |
| String variant = (defaultLanguage.length > 2) ? defaultLanguage[2] : ""; |
| |
| // Sanitize the locale using isLanguageAvailable. |
| int result = service.isLanguageAvailable(language, country, variant); |
| if (result < LANG_AVAILABLE) { |
| // The default language is not supported. |
| return null; |
| } |
| |
| // Get the default voice name |
| String voiceName = service.getDefaultVoiceNameFor(language, country, variant); |
| if (TextUtils.isEmpty(voiceName)) { |
| return null; |
| } |
| |
| // Find it |
| List<Voice> voices = service.getVoices(); |
| if (voices == null) { |
| return null; |
| } |
| for (Voice voice : voices) { |
| if (voice.getName().equals(voiceName)) { |
| return voice; |
| } |
| } |
| return null; |
| }, null, "getDefaultVoice"); |
| } |
| |
| |
| |
| /** |
| * Checks if the specified language as represented by the Locale is available and supported. |
| * |
| * @param loc The Locale describing the language to be used. |
| * |
| * @return Code indicating the support status for the locale. See {@link #LANG_AVAILABLE}, |
| * {@link #LANG_COUNTRY_AVAILABLE}, {@link #LANG_COUNTRY_VAR_AVAILABLE}, |
| * {@link #LANG_MISSING_DATA} and {@link #LANG_NOT_SUPPORTED}. |
| */ |
| public int isLanguageAvailable(final Locale loc) { |
| return runAction((ITextToSpeechService service) -> { |
| String language = null, country = null; |
| |
| try { |
| language = loc.getISO3Language(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 639-2/T language code for locale: " + loc, e); |
| return LANG_NOT_SUPPORTED; |
| } |
| |
| try { |
| country = loc.getISO3Country(); |
| } catch (MissingResourceException e) { |
| Log.w(TAG, "Couldn't retrieve ISO 3166 country code for locale: " + loc, e); |
| return LANG_NOT_SUPPORTED; |
| } |
| |
| return service.isLanguageAvailable(language, country, loc.getVariant()); |
| }, LANG_NOT_SUPPORTED, "isLanguageAvailable"); |
| } |
| |
| /** |
| * Synthesizes the given text to a ParcelFileDescriptor using the specified parameters. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}). |
| * |
| * @param text The text that should be synthesized. No longer than |
| * {@link #getMaxSpeechInputLength()} characters. |
| * @param params Parameters for the request. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the engine |
| * named "com.svox.pico" if it is being used. |
| * @param fileDescriptor ParcelFileDescriptor to write the generated audio data to. |
| * @param utteranceId An unique identifier for this request. |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the synthesizeToFile operation. |
| */ |
| public int synthesizeToFile(@NonNull final CharSequence text, @NonNull final Bundle params, |
| @NonNull final ParcelFileDescriptor fileDescriptor, @NonNull final String utteranceId) { |
| return runAction((ITextToSpeechService service) -> { |
| return service.synthesizeToFileDescriptor(getCallerIdentity(), text, |
| fileDescriptor, getParams(params), utteranceId); |
| }, ERROR, "synthesizeToFile"); |
| } |
| |
| /** |
| * Synthesizes the given text to a file using the specified parameters. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}). |
| * |
| * @param text The text that should be synthesized. No longer than |
| * {@link #getMaxSpeechInputLength()} characters. |
| * @param params Parameters for the request. Cannot be null. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * @param file File to write the generated audio data to. |
| * @param utteranceId An unique identifier for this request. |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the synthesizeToFile operation. |
| */ |
| public int synthesizeToFile(final CharSequence text, final Bundle params, |
| final File file, final String utteranceId) { |
| if (file.exists() && !file.canWrite()) { |
| Log.e(TAG, "Can't write to " + file); |
| return ERROR; |
| } |
| try ( |
| ParcelFileDescriptor fileDescriptor = ParcelFileDescriptor.open(file, |
| ParcelFileDescriptor.MODE_WRITE_ONLY |
| | ParcelFileDescriptor.MODE_CREATE |
| | ParcelFileDescriptor.MODE_TRUNCATE); |
| ) { |
| int returnValue = synthesizeToFile(text, params, fileDescriptor, utteranceId); |
| fileDescriptor.close(); |
| return returnValue; |
| } catch (FileNotFoundException e) { |
| Log.e(TAG, "Opening file " + file + " failed", e); |
| return ERROR; |
| } catch (IOException e) { |
| Log.e(TAG, "Closing file " + file + " failed", e); |
| return ERROR; |
| } |
| } |
| |
| /** |
| * Synthesizes the given text to a file using the specified parameters. |
| * This method is asynchronous, i.e. the method just adds the request to the queue of TTS |
| * requests and then returns. The synthesis might not have finished (or even started!) at the |
| * time when this method returns. In order to reliably detect errors during synthesis, |
| * we recommend setting an utterance progress listener (see |
| * {@link #setOnUtteranceProgressListener}) and using the |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID} parameter. |
| * |
| * @param text The text that should be synthesized. No longer than |
| * {@link #getMaxSpeechInputLength()} characters. |
| * @param params Parameters for the request. Cannot be null. |
| * Supported parameter names: |
| * {@link Engine#KEY_PARAM_UTTERANCE_ID}. |
| * Engine specific parameters may be passed in but the parameter keys |
| * must be prefixed by the name of the engine they are intended for. For example |
| * the keys "com.svox.pico_foo" and "com.svox.pico:bar" will be passed to the |
| * engine named "com.svox.pico" if it is being used. |
| * @param filename Absolute file filename to write the generated audio data to.It should be |
| * something like "/sdcard/myappsounds/mysound.wav". |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS} of <b>queuing</b> the synthesizeToFile operation. |
| * @deprecated As of API level 21, replaced by |
| * {@link #synthesizeToFile(CharSequence, Bundle, File, String)}. |
| */ |
| @Deprecated |
| public int synthesizeToFile(final String text, final HashMap<String, String> params, |
| final String filename) { |
| return synthesizeToFile(text, convertParamsHashMaptoBundle(params), |
| new File(filename), params.get(Engine.KEY_PARAM_UTTERANCE_ID)); |
| } |
| |
| private Bundle convertParamsHashMaptoBundle(HashMap<String, String> params) { |
| if (params != null && !params.isEmpty()) { |
| Bundle bundle = new Bundle(); |
| copyIntParam(bundle, params, Engine.KEY_PARAM_STREAM); |
| copyIntParam(bundle, params, Engine.KEY_PARAM_SESSION_ID); |
| copyStringParam(bundle, params, Engine.KEY_PARAM_UTTERANCE_ID); |
| copyFloatParam(bundle, params, Engine.KEY_PARAM_VOLUME); |
| copyFloatParam(bundle, params, Engine.KEY_PARAM_PAN); |
| |
| // Copy feature strings defined by the framework. |
| copyStringParam(bundle, params, Engine.KEY_FEATURE_NETWORK_SYNTHESIS); |
| copyStringParam(bundle, params, Engine.KEY_FEATURE_EMBEDDED_SYNTHESIS); |
| copyIntParam(bundle, params, Engine.KEY_FEATURE_NETWORK_TIMEOUT_MS); |
| copyIntParam(bundle, params, Engine.KEY_FEATURE_NETWORK_RETRIES_COUNT); |
| |
| // Copy over all parameters that start with the name of the |
| // engine that we are currently connected to. The engine is |
| // free to interpret them as it chooses. |
| if (!TextUtils.isEmpty(mCurrentEngine)) { |
| for (Map.Entry<String, String> entry : params.entrySet()) { |
| final String key = entry.getKey(); |
| if (key != null && key.startsWith(mCurrentEngine)) { |
| bundle.putString(key, entry.getValue()); |
| } |
| } |
| } |
| |
| return bundle; |
| } |
| return null; |
| } |
| |
| private Bundle getParams(Bundle params) { |
| if (params != null && !params.isEmpty()) { |
| Bundle bundle = new Bundle(mParams); |
| bundle.putAll(params); |
| |
| verifyIntegerBundleParam(bundle, Engine.KEY_PARAM_STREAM); |
| verifyIntegerBundleParam(bundle, Engine.KEY_PARAM_SESSION_ID); |
| verifyStringBundleParam(bundle, Engine.KEY_PARAM_UTTERANCE_ID); |
| verifyFloatBundleParam(bundle, Engine.KEY_PARAM_VOLUME); |
| verifyFloatBundleParam(bundle, Engine.KEY_PARAM_PAN); |
| |
| // Copy feature strings defined by the framework. |
| verifyBooleanBundleParam(bundle, Engine.KEY_FEATURE_NETWORK_SYNTHESIS); |
| verifyBooleanBundleParam(bundle, Engine.KEY_FEATURE_EMBEDDED_SYNTHESIS); |
| verifyIntegerBundleParam(bundle, Engine.KEY_FEATURE_NETWORK_TIMEOUT_MS); |
| verifyIntegerBundleParam(bundle, Engine.KEY_FEATURE_NETWORK_RETRIES_COUNT); |
| |
| return bundle; |
| } else { |
| return mParams; |
| } |
| } |
| |
| private static boolean verifyIntegerBundleParam(Bundle bundle, String key) { |
| if (bundle.containsKey(key)) { |
| if (!(bundle.get(key) instanceof Integer || |
| bundle.get(key) instanceof Long)) { |
| bundle.remove(key); |
| Log.w(TAG, "Synthesis request paramter " + key + " containst value " |
| + " with invalid type. Should be an Integer or a Long"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private static boolean verifyStringBundleParam(Bundle bundle, String key) { |
| if (bundle.containsKey(key)) { |
| if (!(bundle.get(key) instanceof String)) { |
| bundle.remove(key); |
| Log.w(TAG, "Synthesis request paramter " + key + " containst value " |
| + " with invalid type. Should be a String"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private static boolean verifyBooleanBundleParam(Bundle bundle, String key) { |
| if (bundle.containsKey(key)) { |
| if (!(bundle.get(key) instanceof Boolean || |
| bundle.get(key) instanceof String)) { |
| bundle.remove(key); |
| Log.w(TAG, "Synthesis request paramter " + key + " containst value " |
| + " with invalid type. Should be a Boolean or String"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| |
| private static boolean verifyFloatBundleParam(Bundle bundle, String key) { |
| if (bundle.containsKey(key)) { |
| if (!(bundle.get(key) instanceof Float || |
| bundle.get(key) instanceof Double)) { |
| bundle.remove(key); |
| Log.w(TAG, "Synthesis request paramter " + key + " containst value " |
| + " with invalid type. Should be a Float or a Double"); |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private void copyStringParam(Bundle bundle, HashMap<String, String> params, String key) { |
| String value = params.get(key); |
| if (value != null) { |
| bundle.putString(key, value); |
| } |
| } |
| |
| private void copyIntParam(Bundle bundle, HashMap<String, String> params, String key) { |
| String valueString = params.get(key); |
| if (!TextUtils.isEmpty(valueString)) { |
| try { |
| int value = Integer.parseInt(valueString); |
| bundle.putInt(key, value); |
| } catch (NumberFormatException ex) { |
| // don't set the value in the bundle |
| } |
| } |
| } |
| |
| private void copyFloatParam(Bundle bundle, HashMap<String, String> params, String key) { |
| String valueString = params.get(key); |
| if (!TextUtils.isEmpty(valueString)) { |
| try { |
| float value = Float.parseFloat(valueString); |
| bundle.putFloat(key, value); |
| } catch (NumberFormatException ex) { |
| // don't set the value in the bundle |
| } |
| } |
| } |
| |
| /** |
| * Sets the listener that will be notified when synthesis of an utterance completes. |
| * |
| * @param listener The listener to use. |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| * |
| * @deprecated Use {@link #setOnUtteranceProgressListener(UtteranceProgressListener)} |
| * instead. |
| */ |
| @Deprecated |
| public int setOnUtteranceCompletedListener(final OnUtteranceCompletedListener listener) { |
| mUtteranceProgressListener = UtteranceProgressListener.from(listener); |
| return TextToSpeech.SUCCESS; |
| } |
| |
| /** |
| * Sets the listener that will be notified of various events related to the |
| * synthesis of a given utterance. |
| * |
| * See {@link UtteranceProgressListener} and |
| * {@link TextToSpeech.Engine#KEY_PARAM_UTTERANCE_ID}. |
| * |
| * @param listener the listener to use. |
| * @return {@link #ERROR} or {@link #SUCCESS} |
| */ |
| public int setOnUtteranceProgressListener(UtteranceProgressListener listener) { |
| mUtteranceProgressListener = listener; |
| return TextToSpeech.SUCCESS; |
| } |
| |
| /** |
| * Sets the TTS engine to use. |
| * |
| * @deprecated This doesn't inform callers when the TTS engine has been |
| * initialized. {@link #TextToSpeech(Context, OnInitListener, String)} |
| * can be used with the appropriate engine name. Also, there is no |
| * guarantee that the engine specified will be loaded. If it isn't |
| * installed or disabled, the user / system wide defaults will apply. |
| * |
| * @param enginePackageName The package name for the synthesis engine (e.g. "com.svox.pico") |
| * |
| * @return {@link #ERROR} or {@link #SUCCESS}. |
| */ |
| @Deprecated |
| public int setEngineByPackageName(String enginePackageName) { |
| mRequestedEngine = enginePackageName; |
| return initTts(); |
| } |
| |
| /** |
| * Gets the package name of the default speech synthesis engine. |
| * |
| * @return Package name of the TTS engine that the user has chosen |
| * as their default. |
| */ |
| public String getDefaultEngine() { |
| return mEnginesHelper.getDefaultEngine(); |
| } |
| |
| /** |
| * Checks whether the user's settings should override settings requested |
| * by the calling application. As of the Ice cream sandwich release, |
| * user settings never forcibly override the app's settings. |
| */ |
| @Deprecated |
| public boolean areDefaultsEnforced() { |
| return false; |
| } |
| |
| /** |
| * Gets a list of all installed TTS engines. |
| * |
| * @return A list of engine info objects. The list can be empty, but never {@code null}. |
| */ |
| public List<EngineInfo> getEngines() { |
| return mEnginesHelper.getEngines(); |
| } |
| |
| 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) |
| throws RemoteException { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onStop(utteranceId, isStarted); |
| } |
| }; |
| |
| @Override |
| public void onSuccess(String utteranceId) { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onDone(utteranceId); |
| } |
| } |
| |
| @Override |
| public void onError(String utteranceId, int errorCode) { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onError(utteranceId, errorCode); |
| } |
| } |
| |
| @Override |
| public void onStart(String utteranceId) { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onStart(utteranceId); |
| } |
| } |
| |
| @Override |
| public void onBeginSynthesis( |
| String utteranceId, |
| int sampleRateInHz, |
| int audioFormat, |
| int channelCount) { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onBeginSynthesis( |
| utteranceId, sampleRateInHz, audioFormat, channelCount); |
| } |
| } |
| |
| @Override |
| public void onAudioAvailable(String utteranceId, byte[] audio) { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onAudioAvailable(utteranceId, audio); |
| } |
| } |
| |
| @Override |
| public void onRangeStart(String utteranceId, int start, int end, int frame) { |
| UtteranceProgressListener listener = mUtteranceProgressListener; |
| if (listener != null) { |
| listener.onRangeStart(utteranceId, start, end, frame); |
| } |
| } |
| }; |
| |
| private class SetupConnectionAsyncTask extends AsyncTask<Void, Void, Integer> { |
| |
| @Override |
| protected Integer doInBackground(Void... params) { |
| synchronized(mStartLock) { |
| if (isCancelled()) { |
| return null; |
| } |
| |
| try { |
| mService.setCallback(getCallerIdentity(), mCallback); |
| |
| if (mParams.getString(Engine.KEY_PARAM_LANGUAGE) == null) { |
| String[] defaultLanguage = mService.getClientDefaultLanguage(); |
| mParams.putString(Engine.KEY_PARAM_LANGUAGE, defaultLanguage[0]); |
| mParams.putString(Engine.KEY_PARAM_COUNTRY, defaultLanguage[1]); |
| mParams.putString(Engine.KEY_PARAM_VARIANT, defaultLanguage[2]); |
| |
| // Get the default voice for the locale. |
| String defaultVoiceName = mService.getDefaultVoiceNameFor( |
| defaultLanguage[0], defaultLanguage[1], defaultLanguage[2]); |
| mParams.putString(Engine.KEY_PARAM_VOICE_NAME, defaultVoiceName); |
| } |
| |
| Log.i(TAG, "Setting up the connection to TTS engine..."); |
| return SUCCESS; |
| } catch (RemoteException re) { |
| Log.e(TAG, "Error connecting to service, setCallback() failed"); |
| return ERROR; |
| } |
| } |
| } |
| |
| @Override |
| protected void onPostExecute(Integer result) { |
| synchronized(mStartLock) { |
| if (mOnSetupConnectionAsyncTask == this) { |
| mOnSetupConnectionAsyncTask = null; |
| } |
| mEstablished = true; |
| dispatchOnInit(result); |
| } |
| } |
| } |
| |
| @Override |
| public void onServiceConnected(ComponentName componentName, IBinder service) { |
| synchronized(mStartLock) { |
| mConnectingServiceConnection = null; |
| |
| Log.i(TAG, "Connected to TTS engine"); |
| |
| if (mOnSetupConnectionAsyncTask != null) { |
| mOnSetupConnectionAsyncTask.cancel(false); |
| } |
| |
| mService = ITextToSpeechService.Stub.asInterface(service); |
| mServiceConnection = Connection.this; |
| |
| mEstablished = false; |
| mOnSetupConnectionAsyncTask = new SetupConnectionAsyncTask(); |
| mOnSetupConnectionAsyncTask.execute(); |
| } |
| } |
| |
| public IBinder getCallerIdentity() { |
| return mCallback; |
| } |
| |
| /** |
| * Clear connection related fields and cancel mOnServiceConnectedAsyncTask if set. |
| * |
| * @return true if we cancel mOnSetupConnectionAsyncTask in progress. |
| */ |
| protected boolean clearServiceConnection() { |
| synchronized(mStartLock) { |
| boolean result = false; |
| if (mOnSetupConnectionAsyncTask != null) { |
| result = mOnSetupConnectionAsyncTask.cancel(false); |
| mOnSetupConnectionAsyncTask = null; |
| } |
| |
| mService = null; |
| // If this is the active connection, clear it |
| if (mServiceConnection == this) { |
| mServiceConnection = null; |
| } |
| return result; |
| } |
| } |
| |
| @Override |
| 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 |
| * before OnServiceConnectedAsyncTask.onPostExecute. onServiceDisconnected cancels |
| * OnServiceConnectedAsyncTask.onPostExecute and we don't call dispatchOnInit |
| * with ERROR as argument. |
| */ |
| dispatchOnInit(ERROR); |
| } |
| } |
| |
| public boolean isEstablished() { |
| return mService != null && mEstablished; |
| } |
| |
| public <R> R runAction(Action<R> action, R errorResult, String method, |
| boolean reconnect, boolean onlyEstablishedConnection) { |
| synchronized (mStartLock) { |
| try { |
| if (mService == null) { |
| Log.w(TAG, method + " failed: not connected to TTS engine"); |
| return errorResult; |
| } |
| if (onlyEstablishedConnection && !isEstablished()) { |
| Log.w(TAG, method + " failed: TTS engine connection not fully set up"); |
| return errorResult; |
| } |
| return action.run(mService); |
| } catch (RemoteException ex) { |
| Log.e(TAG, method + " failed", ex); |
| if (reconnect) { |
| disconnect(); |
| initTts(); |
| } |
| return errorResult; |
| } |
| } |
| } |
| } |
| |
| // 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); |
| mSession = null; |
| } |
| |
| @Override |
| public void onError(String errorInfo) { |
| Log.w(TAG, "System TTS connection error: " + errorInfo); |
| // There is an error connecting to the engine - notify the listener. |
| dispatchOnInit(ERROR); |
| } |
| }); |
| |
| 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; |
| } |
| |
| /** |
| * Information about an installed text-to-speech engine. |
| * |
| * @see TextToSpeech#getEngines |
| */ |
| public static class EngineInfo { |
| /** |
| * Engine package name.. |
| */ |
| public String name; |
| /** |
| * Localized label for the engine. |
| */ |
| public String label; |
| /** |
| * Icon for the engine. |
| */ |
| public int icon; |
| /** |
| * Whether this engine is a part of the system |
| * image. |
| * |
| * @hide |
| */ |
| public boolean system; |
| /** |
| * The priority the engine declares for the the intent filter |
| * {@code android.intent.action.TTS_SERVICE} |
| * |
| * @hide |
| */ |
| public int priority; |
| |
| @Override |
| public String toString() { |
| return "EngineInfo{name=" + name + "}"; |
| } |
| |
| } |
| |
| /** |
| * Limit of length of input string passed to speak and synthesizeToFile. |
| * |
| * @see #speak |
| * @see #synthesizeToFile |
| */ |
| public static int getMaxSpeechInputLength() { |
| return 4000; |
| } |
| } |
