1 /* 2 * Copyright (C) 2009 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of 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, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.speech; 18 19 import android.os.Bundle; 20 import android.content.Intent; 21 import android.speech.IRecognitionListener; 22 23 /** 24 * A Service interface to speech recognition. Call startListening when 25 * you want to begin capturing audio; RecognitionService will automatically 26 * determine when the user has finished speaking, stream the audio to the 27 * recognition servers, and notify you when results are ready. In most of the cases, 28 * this class should not be used directly, instead use {@link SpeechRecognizer} for 29 * accessing recognition service. 30 * {@hide} 31 */ 32 oneway interface IRecognitionService { 33 /** 34 * Starts listening for speech. Please note that the recognition service supports 35 * one listener only, therefore, if this function is called from two different threads, 36 * only the latest one will get the notifications 37 * 38 * @param recognizerIntent the intent from which the invocation occurred. Additionally, 39 * this intent can contain extra parameters to manipulate the behavior of the recognition 40 * client. For more information see {@link RecognizerIntent}. 41 * @param listener to receive callbacks, note that this must be non-null 42 */ startListening(in Intent recognizerIntent, in IRecognitionListener listener)43 void startListening(in Intent recognizerIntent, in IRecognitionListener listener); 44 45 /** 46 * Stops listening for speech. Speech captured so far will be recognized as 47 * if the user had stopped speaking at this point. The function has no effect unless it 48 * is called during the speech capturing. 49 * 50 * @param listener to receive callbacks, note that this must be non-null 51 */ stopListening(in IRecognitionListener listener)52 void stopListening(in IRecognitionListener listener); 53 54 /** 55 * Cancels the speech recognition. 56 * 57 * @param listener to receive callbacks, note that this must be non-null 58 */ cancel(in IRecognitionListener listener)59 void cancel(in IRecognitionListener listener); 60 } 61