content: /*
   * 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 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;
      public static final int HINT_CONTEXT_LAUNCHER = 3;
  
      private Recognition() { }   // don't instantiate
  }
  