1 /* 2 * Copyright (C) 2016 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); you may not 5 * use this file except in compliance with the License. You may obtain a copy of 6 * the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 12 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 13 * License for the specific language governing permissions and limitations under 14 * the License. 15 */ 16 17 package com.googlecode.android_scripting.facade; 18 19 import android.os.SystemClock; 20 import android.speech.tts.TextToSpeech; 21 import android.speech.tts.TextToSpeech.OnInitListener; 22 23 import com.googlecode.android_scripting.jsonrpc.RpcReceiver; 24 import com.googlecode.android_scripting.rpc.Rpc; 25 import com.googlecode.android_scripting.rpc.RpcParameter; 26 27 import java.util.concurrent.CountDownLatch; 28 29 /** 30 * Provides Text To Speech services 31 */ 32 33 public class TextToSpeechFacade extends RpcReceiver { 34 35 private final TextToSpeech mTts; 36 private final CountDownLatch mOnInitLock; 37 TextToSpeechFacade(FacadeManager manager)38 public TextToSpeechFacade(FacadeManager manager) { 39 super(manager); 40 mOnInitLock = new CountDownLatch(1); 41 mTts = new TextToSpeech(manager.getService(), new OnInitListener() { 42 @Override 43 public void onInit(int arg0) { 44 mOnInitLock.countDown(); 45 } 46 }); 47 } 48 49 @Override shutdown()50 public void shutdown() { 51 while (mTts.isSpeaking()) { 52 SystemClock.sleep(100); 53 } 54 mTts.shutdown(); 55 } 56 57 @Rpc(description = "Speaks the provided message via TTS.") ttsSpeak(@pcParametername = "message") String message)58 public void ttsSpeak(@RpcParameter(name = "message") String message) throws InterruptedException { 59 mOnInitLock.await(); 60 if (message != null) { 61 mTts.speak(message, TextToSpeech.QUEUE_ADD, null); 62 } 63 } 64 65 @Rpc(description = "Returns True if speech is currently in progress.") ttsIsSpeaking()66 public Boolean ttsIsSpeaking() throws InterruptedException { 67 mOnInitLock.await(); 68 return mTts.isSpeaking(); 69 } 70 71 } 72