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-/*
- * Copyright (C) 2009 Google Inc.
- *
- * 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;
-
-import android.content.ComponentName;
-import android.content.Intent;
-import android.content.ServiceConnection;
-import android.os.Bundle;
-import android.os.IBinder;
-import android.os.RemoteException;
-import android.speech.RecognitionResult;
-import android.util.Log;
-
-import java.util.List;
-
-/**
- * Utils for Google's network-based speech recognizer, which lets you perform
- * speech-to-text translation through RecognitionService. IRecognitionService
- * and IRecognitionListener are the core interfaces; you begin recognition
- * through IRecognitionService and subscribe to callbacks about when the user
- * stopped speaking, results come in, errors, etc. through IRecognitionListener.
- * RecognitionServiceUtil includes default IRecognitionListener and
- * ServiceConnection implementations to reduce the amount of boilerplate.
- *
- * The Service provides no user interface. See RecognitionActivity if you
- * want the standard voice search UI.
- *
- * Below is a small skeleton of how to use the recognizer:
- *
- * ServiceConnection conn = new RecognitionServiceUtil.Connection();
- * mContext.bindService(RecognitionServiceUtil.sDefaultIntent,
- * conn, Context.BIND_AUTO_CREATE);
- * IRecognitionListener listener = new RecognitionServiceWrapper.NullListener() {
- * public void onResults(List<String> results) {
- * // Do something with recognition transcripts
- * }
- * }
- *
- * // Must wait for conn.mService to be populated, then call below
- * conn.mService.startListening(null, listener);
- *
- * {@hide}
- */
-public class RecognitionServiceUtil {
- public static final Intent sDefaultIntent = new Intent(
- RecognizerIntent.ACTION_RECOGNIZE_SPEECH);
-
- // Recognize request parameters
- public static final String USE_LOCATION = "useLocation";
- public static final String CONTACT_AUTH_TOKEN = "contactAuthToken";
-
- // Bundles
- public static final String NOISE_LEVEL = "NoiseLevel";
- public static final String SIGNAL_NOISE_RATIO = "SignalNoiseRatio";
-
- private RecognitionServiceUtil() {}
-
- /**
- * IRecognitionListener which does nothing in response to recognition
- * callbacks. You can subclass from this and override only the methods
- * whose events you want to respond to.
- */
- public static class NullListener extends IRecognitionListener.Stub {
- public void onReadyForSpeech(Bundle bundle) {}
- public void onBeginningOfSpeech() {}
- public void onRmsChanged(float rmsdB) {}
- public void onBufferReceived(byte[] buf) {}
- public void onEndOfSpeech() {}
- public void onError(int error) {}
- public void onResults(List<RecognitionResult> results, long key) {}
- }
-
- /**
- * Basic ServiceConnection which just records mService variable.
- */
- public static class Connection implements ServiceConnection {
- public IRecognitionService mService;
-
- public synchronized void onServiceConnected(ComponentName name, IBinder service) {
- mService = IRecognitionService.Stub.asInterface(service);
- }
-
- public void onServiceDisconnected(ComponentName name) {
- mService = null;
- }
- }
-}