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/*
* Copyright (C) 2010 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.common.speech;
/**
* Utilities for voice recognition implementations.
*
* @see android.speech.RecognitionService
* @see android.speech.RecognizerIntent
*/
public class Recognition {
/**
* The extra key used in an intent to the speech recognizer for voice search. Not
* generally to be used by developers. The system search dialog uses this, for example,
* to set a calling package for identification by a voice search API. If this extra
* is set by anyone but the system process, it should be overridden by the voice search
* implementation.
*/
public static final String EXTRA_CALLING_PACKAGE = "calling_package";
/**
* The key to the extra in the Bundle returned by
* android.speech.RecognizerIntent#ACTION_GET_LANGUAGE_DETAILS
* which is an ArrayList of CharSequences which are hints that can be shown to
* the user for voice actions currently supported by voice search for the user's current
* language preference for voice search (i.e., the one defined in the extra
* android.speech.RecognizerIntent#EXTRA_LANGUAGE_PREFERENCE).
*
* If this is paired with EXTRA_HINT_CONTEXT, should return a set of hints that are
* appropriate for the provided context.
*
* The CharSequences are SpannedStrings and will contain segments wrapped in
* <annotation action="true"></annotation>. This is to indicate the section of the text
* which represents the voice action, to be highlighted in the UI if so desired.
*/
public static final String EXTRA_HINT_STRINGS = "android.speech.extra.HINT_STRINGS";
/**
* The key to an extra to be included in the request intent for
* android.speech.RecognizerIntent#ACTION_GET_LANGUAGE_DETAILS.
* Should be an int of one of the values defined below. If an
* unknown int value is provided, it should be ignored.
*/
public static final String EXTRA_HINT_CONTEXT = "android.speech.extra.HINT_CONTEXT";
/**
* A set of values for EXTRA_HINT_CONTEXT.
*/
public static final int HINT_CONTEXT_UNKNOWN = 0;
public static final int HINT_CONTEXT_VOICE_SEARCH_HELP = 1;
public static final int HINT_CONTEXT_CAR_HOME = 2;
private Recognition() { } // don't instantiate
}
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