jiti-meet/react/features/transcribing/functions.ts

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import i18next from 'i18next';
import { IConfig } from '../base/config/configType';
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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.
*
* @param {*} config - Application config.
* @returns {string}
*/
export function determineTranscriptionLanguage(config: IConfig) {
const { transcription } = config;
// if transcriptions are not enabled nothing to determine
if (!transcription?.enabled) {
return undefined;
}
// Depending on the config either use the language that the app automatically detected or the hardcoded
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// 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 = transcription?.useAppLanguage ?? true
? JITSI_TO_BCP47_MAP[i18next.language as keyof typeof JITSI_TO_BCP47_MAP]
: transcription?.preferredLanguage;
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// Check if the obtained language is supported by the transcriber
let safeBCP47Locale = TRANSCRIBER_LANGS[bcp47Locale as keyof typeof TRANSCRIBER_LANGS] && bcp47Locale;
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if (!safeBCP47Locale) {
safeBCP47Locale = DEFAULT_TRANSCRIBER_LANG;
logger.warn(`Transcriber language ${bcp47Locale} is not supported, using default ${DEFAULT_TRANSCRIBER_LANG}`);
}
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logger.info(`Transcriber language set to ${safeBCP47Locale}`);
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return safeBCP47Locale;
}