Make availability of hotword hardware known to hotword component extension.

chrome/browser/resources/hotword/constants.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 cr.define('hotword.constants', function() {
 'use strict';
 
 /**
  * Number of seconds of audio to record when logging is enabled.
  * @const {number}
  */
 var AUDIO_LOG_SECONDS = 2;
 
 /**
+ * Timeout in seconds, for detecting false positives with a hotword stream.
+ * @const {number}
+ */
+var HOTWORD_STREAM_TIMEOUT_SECONDS = 2;
+
+/**
  * Hotword data shared module extension's ID.
  * @const {string}
  */
 var SHARED_MODULE_ID = 'lccekmodgklaepjeofjdjpbminllajkg';
 
 /**
  * Path to shared module data.
  * @const {string}
  */
 var SHARED_MODULE_ROOT = '_modules/' + SHARED_MODULE_ID;
@@ skipping 85 matching lines @@
  * Messages for communicating with the NaCl recognizer plugin. These must match
  * constants in <google3>/hotword_plugin.c
  * @enum {string}
  */
 var NaClPlugin = {
   RESTART: 'r',
   SAMPLE_RATE_PREFIX: 'h',
   MODEL_PREFIX: 'm',
   STOP: 's',
   LOG: 'l',
+  DSP: 'd',
   BEGIN_SPEAKER_MODEL: 'b',
   ADAPT_SPEAKER_MODEL: 'a',
   FINISH_SPEAKER_MODEL: 'f',
   SPEAKER_MODEL_SAVED: 'sm_saved',
   REQUEST_MODEL: 'model',
   MODEL_LOADED: 'model_loaded',
   READY_FOR_AUDIO: 'audio',
   STOPPED: 'stopped',
   HOTWORD_DETECTED: 'hotword',
   MS_CONFIGURED: 'ms_configured',
@@ skipping 139 matching lines @@
  * @const {string}
  */
 var UI_LANGUAGE = (chrome.i18n && chrome.i18n.getUILanguage) ?
       chrome.i18n.getUILanguage() : '';
 
 return {
   AUDIO_LOG_SECONDS: AUDIO_LOG_SECONDS,
   CLIENT_PORT_NAME: CLIENT_PORT_NAME,
   COMMAND_FIELD_NAME: COMMAND_FIELD_NAME,
   FILE_SYSTEM_SIZE_BYTES: FILE_SYSTEM_SIZE_BYTES,
+  HOTWORD_STREAM_TIMEOUT_SECONDS: HOTWORD_STREAM_TIMEOUT_SECONDS,
   NUM_TRAINING_UTTERANCES: NUM_TRAINING_UTTERANCES,
   SHARED_MODULE_ID: SHARED_MODULE_ID,
   SHARED_MODULE_ROOT: SHARED_MODULE_ROOT,
   SPEAKER_MODEL_FILE_NAME: SPEAKER_MODEL_FILE_NAME,
   UI_LANGUAGE: UI_LANGUAGE,
   UTTERANCE_FILE_EXTENSION: UTTERANCE_FILE_EXTENSION,
   UTTERANCE_FILE_PREFIX: UTTERANCE_FILE_PREFIX,
   CommandToPage: CommandToPage,
   CommandFromPage: CommandFromPage,
   Error: Error,
   Event: Event,
   File: File,
   NaClPlugin: NaClPlugin,
   RecognizerStartMode: RecognizerStartMode,
   SessionSource: SessionSource,
   TimeoutMs: TimeoutMs,
   UmaMediaStreamOpenResult: UmaMediaStreamOpenResult,
   UmaMetrics: UmaMetrics,
   UmaNaClMessageTimeout: UmaNaClMessageTimeout,
   UmaNaClPluginLoadResult: UmaNaClPluginLoadResult,
   UmaTriggerSource: UmaTriggerSource
 };
 
 });