SpeechToTextFactory.ts•1.96 kB
/**
* Copyright (C) 2025 by Fonoster Inc (https://fonoster.com)
* http://github.com/fonoster/fonoster
*
* This file is part of Fonoster
*
* Licensed under the MIT License (the "License");
* you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://opensource.org/licenses/MIT
*
* 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.
*/
import { getLogger } from "@fonoster/logger";
import { AbstractSpeechToText } from "./AbstractSpeechToText";
import { Deepgram, ENGINE_NAME as DEEPGRAM_ENGINE_NAME } from "./Deepgram";
import { Google, ENGINE_NAME as GOOGLE_ENGINE_NAME } from "./Google";
import { SttConfig } from "./types";
const logger = getLogger({ service: "apiserver", filePath: __filename });
type EngineConstructor<T extends SttConfig = SttConfig> = new (
options: T
) => AbstractSpeechToText<string>;
class SpeechToTextFactory {
private static engines: Map<string, EngineConstructor> = new Map();
static registerEngine<T extends SttConfig>(
name: string,
ctor: EngineConstructor<T>
) {
logger.verbose("registering stt engine", { name });
this.engines.set(name, ctor);
}
static getEngine<T extends SttConfig>(
engineName: string,
config: T
): AbstractSpeechToText<string> {
const EngineConstructor = this.engines.get(engineName);
if (!EngineConstructor) {
throw new Error(`Engine ${engineName} not found`);
}
return new EngineConstructor(config);
}
}
// Register engines
SpeechToTextFactory.registerEngine(GOOGLE_ENGINE_NAME, Google);
SpeechToTextFactory.registerEngine(DEEPGRAM_ENGINE_NAME, Deepgram);
export { SpeechToTextFactory };