additional bcp47 languages

config.js

@@ -242,8 +242,9 @@ var config = {
     // transcribeWithAppLanguage: true,
 
     // Transcriber language. This settings will only work if "transcribeWithAppLanguage" is explicitly set to false.
-    // Available languages can be found in lang/language.json.
-    // preferredTranscribeLanguage: 'en',
+    // Available languages can be found in
+    // ./src/react/features/transcribing/transcriber-langs.json.
+    // preferredTranscribeLanguage: 'en-US',
 
     // Enables automatic turning on captions when recording is started
     // autoCaptionOnRecord: false,

react/features/transcribing/functions.js

@@ -2,11 +2,12 @@
 
 import i18next from 'i18next';
 
-import JITSI_TO_BCP47_MAP from './jitsiToBCP47LocaleMap.json';
+import JITSI_TO_BCP47_MAP from './jitsi-bcp47-map.json';
+import logger from './logger';
+import TRANSCRIBER_LANGS from './transcriber-langs.json';
 
 const DEFAULT_TRANSCRIBER_LANG = 'en-US';
 
-
 /**
  * Determine which language to use for transcribing.
  *
@@ -14,17 +15,23 @@ const DEFAULT_TRANSCRIBER_LANG = 'en-US';
  * @returns {string}
  */
 export function determineTranscriptionLanguage(config: Object) {
-
     const { preferredTranscribeLanguage, transcribeWithAppLanguage = true } = config;
 
     // Depending on the config either use the language that the app automatically detected or the hardcoded
-    // config value.
-    const jitsiLocale = transcribeWithAppLanguage ? i18next.language : preferredTranscribeLanguage;
+    // config BCP47 value.
+    // Jitsi language detections uses custom language tags, but the transcriber expects BCP-47 compliant tags,
+    // we use a mapping file to convert them.
+    const bcp47Locale = transcribeWithAppLanguage ? JITSI_TO_BCP47_MAP[i18next.language] : preferredTranscribeLanguage;
+
+    // Check if the obtained language is supported by the transcriber
+    let safeBCP47Locale = TRANSCRIBER_LANGS[bcp47Locale] && bcp47Locale;
+
+    if (!safeBCP47Locale) {
+        safeBCP47Locale = DEFAULT_TRANSCRIBER_LANG;
+        logger.warn(`Transcriber language ${bcp47Locale} is not supported, using default ${DEFAULT_TRANSCRIBER_LANG}`);
+    }
 
-    // Jitsi uses custom language tags, but the transcriber expects BCP-47 compliant tags. We use a mapping file
-    // to convert them.
-    // Not all languages that the app might detect are supported by the transcriber in which case use the default.
-    const { [jitsiLocale]: bcp47Locale = DEFAULT_TRANSCRIBER_LANG } = JITSI_TO_BCP47_MAP;
+    logger.info(`Transcriber language set to ${safeBCP47Locale}`);
 
-    return bcp47Locale;
+    return safeBCP47Locale;
 }

react/features/transcribing/jitsi-bcp47-map.json

@@ -46,6 +46,6 @@
     "tr": "tr-TR",
     "uk": "uk-UA",
     "vi": "vi-VN",
-    "zhCN": "zh (cmn-Hans-CN)",
-    "zhTW": "zh-TW (cmn-Hant-TW)"
+    "zhCN": "zh",
+    "zhTW": "zh-TW"
 }

react/features/transcribing/logger.js

@@ -0,0 +1,5 @@
+// @flow
+
+import { getLogger } from '../base/logging/functions';
+
+export default getLogger('features/transcribing');

react/features/transcribing/transcriber-langs.json

@@ -0,0 +1,89 @@
+{
+    "af-ZA": "Afrikaans (South Africa)",
+    "id-ID": "Indonesian (Indonesia)",
+    "ms-MY": "Malay (Malaysia)",
+    "ca-ES": "Catalan (Spain)",
+    "cs-CZ": "Czech (Czech Republic)",
+    "da-DK": "Danish (Denmark)",
+    "de-DE": "German (Germany)",
+    "en-AU": "English (Australia)",
+    "en-CA": "English (Canada)",
+    "en-GB": "English (United Kingdom)",
+    "en-IN": "English (India)",
+    "en-IE": "English (Ireland)",
+    "en-NZ": "English (New Zealand)",
+    "en-PH": "English (Philippines)",
+    "en-ZA": "English (South Africa)",
+    "en-US": "English (United States)",
+    "es-AR": "Spanish (Argentina)",
+    "es-BO": "Spanish (Bolivia)",
+    "es-CL": "Spanish (Chile)",
+    "es-CO": "Spanish (Colombia)",
+    "es-CR": "Spanish (Costa Rica)",
+    "es-EC": "Spanish (Ecuador)",
+    "es-SV": "Spanish (El Salvador)",
+    "es-ES": "Spanish (Spain)",
+    "es-US": "Spanish (United States)",
+    "es-GT": "Spanish (Guatemala)",
+    "es-HN": "Spanish (Honduras)",
+    "es-MX": "Spanish (Mexico)",
+    "es-NI": "Spanish (Nicaragua)",
+    "es-PA": "Spanish (Panama)",
+    "es-PY": "Spanish (Paraguay)",
+    "es-PE": "Spanish (Peru)",
+    "es-PR": "Spanish (Puerto Rico)",
+    "es-DO": "Spanish (Dominican Republic)",
+    "es-UY": "Spanish (Uruguay)",
+    "es-VE": "Spanish (Venezuela)",
+    "eu-ES": "Basque (Spain)",
+    "fil-PH": "Filipino (Philippines)",
+    "fr-CA": "French (Canada)",
+    "fr-FR": "French (France)",
+    "gl-ES": "Galician (Spain)",
+    "hr-HR": "Croatian (Croatia)",
+    "zu-ZA": "Zulu (South Africa)",
+    "is-IS": "Icelandic (Iceland)",
+    "it-IT": "Italian (Italy)",
+    "lt-LT": "Lithuanian (Lithuania)",
+    "hu-HU": "Hungarian (Hungary)",
+    "nl-NL": "Dutch (Netherlands)",
+    "no-NO": "Norwegian Bokmål (Norway)",
+    "pl-PL": "Polish (Poland)",
+    "pt-BR": "Portuguese (Brazil)",
+    "pt-PT": "Portuguese (Portugal)",
+    "ro-RO": "Romanian (Romania)",
+    "sk-SK": "Slovak (Slovakia)",
+    "sl-SI": "Slovenian (Slovenia)",
+    "fi-FI": "Finnish (Finland)",
+    "sv-SE": "Swedish (Sweden)",
+    "vi-VN": "Vietnamese (Vietnam)",
+    "tr-TR": "Turkish (Turkey)",
+    "el-GR": "Greek (Greece)",
+    "bg-BG": "Bulgarian (Bulgaria)",
+    "ru-RU": "Russian (Russia)",
+    "sr-RS": "Serbian (Serbia)",
+    "uk-UA": "Ukrainian (Ukraine)",
+    "iw-IL": "Hebrew",
+    "ar-IL": "Arabic (Israel)",
+    "ar-JO": "Arabic (Jordan)",
+    "ar-AE": "Arabic (United Arab Emirates)",
+    "ar-BH": "Arabic (Bahrain)",
+    "ar-DZ": "Arabic (Algeria)",
+    "ar-SA": "Arabic (Saudi Arabia)",
+    "ar-IQ": "Arabic (Iraq)",
+    "ar-KW": "Arabic (Kuwait)",
+    "ar-MA": "Arabic (Morocco)",
+    "ar-TN": "Arabic (Tunisia)",
+    "ar-OM": "Arabic (Oman)",
+    "ar-PS": "Arabic (State of Palestine)",
+    "ar-QA": "Arabic (Qatar)",
+    "ar-LB": "Arabic (Lebanon)",
+    "ar-EG": "Arabic (Egypt)",
+    "fa-IR": "Persian (Iran)",
+    "hi-IN": "Hindi (India)",
+    "th-TH": "Thai (Thailand)",
+    "ko-KR": "Korean (South Korea)",
+    "zh-TW": "Chinese Mandarin (Traditional, Taiwan)",
+    "ja-JP": "Japanese (Japan)",
+    "zh": "Chinese Mandarin (Simplified, China)"
+}