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      1 // Copyright (c) 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 cr.define('hotword.constants', function() {
      6 'use strict';
      7 
      8 /**
      9  * Hotword data shared module extension's ID.
     10  * @const {string}
     11  */
     12 var SHARED_MODULE_ID = 'lccekmodgklaepjeofjdjpbminllajkg';
     13 
     14 /**
     15  * Path to shared module data.
     16  * @const {string}
     17  */
     18 var SHARED_MODULE_ROOT = '_modules/' + SHARED_MODULE_ID;
     19 
     20 /**
     21  * Time to wait for expected messages, in milliseconds.
     22  * @enum {number}
     23  */
     24 var TimeoutMs = {
     25   SHORT: 200,
     26   NORMAL: 500,
     27   LONG: 2000
     28 };
     29 
     30 /**
     31  * The URL of the files used by the plugin.
     32  * @enum {string}
     33  */
     34 var File = {
     35   RECOGNIZER_CONFIG: 'hotword.data',
     36 };
     37 
     38 /**
     39  * Errors emitted by the NaClManager.
     40  * @enum {string}
     41  */
     42 var Error = {
     43   NACL_CRASH: 'nacl_crash',
     44   TIMEOUT: 'timeout',
     45 };
     46 
     47 /**
     48  * Event types supported by NaClManager.
     49  * @enum {string}
     50  */
     51 var Event = {
     52   READY: 'ready',
     53   TRIGGER: 'trigger',
     54   ERROR: 'error',
     55 };
     56 
     57 /**
     58  * Messages for communicating with the NaCl recognizer plugin. These must match
     59  * constants in <google3>/hotword_plugin.c
     60  * @enum {string}
     61  */
     62 var NaClPlugin = {
     63   RESTART: 'r',
     64   SAMPLE_RATE_PREFIX: 'h',
     65   MODEL_PREFIX: 'm',
     66   STOP: 's',
     67   REQUEST_MODEL: 'model',
     68   MODEL_LOADED: 'model_loaded',
     69   READY_FOR_AUDIO: 'audio',
     70   STOPPED: 'stopped',
     71   HOTWORD_DETECTED: 'hotword',
     72   MS_CONFIGURED: 'ms_configured'
     73 };
     74 
     75 /**
     76  * Source of a hotwording session request.
     77  * @enum {string}
     78  */
     79 var SessionSource = {
     80   LAUNCHER: 'launcher'
     81 };
     82 
     83 /**
     84  * The browser UI language.
     85  * @const {string}
     86  */
     87 var UI_LANGUAGE = (chrome.i18n && chrome.i18n.getUILanguage) ?
     88       chrome.i18n.getUILanguage() : '';
     89 
     90 return {
     91   SHARED_MODULE_ID: SHARED_MODULE_ID,
     92   SHARED_MODULE_ROOT: SHARED_MODULE_ROOT,
     93   TimeoutMs: TimeoutMs,
     94   File: File,
     95   Error: Error,
     96   Event: Event,
     97   NaClPlugin: NaClPlugin,
     98   SessionSource: SessionSource,
     99   UI_LANGUAGE: UI_LANGUAGE
    100 };
    101 
    102 });
    103