Transcription Server 2

server.ts

import { google } from "@google-cloud/speech/build/protos/protos";
import { Server, Socket } from "socket.io";
import speechToTextUtils from "./speechToTextUtils";

io.on("connection", (socket: Socket) => {
  console.log("Socket Connection: ", socket.connected);
  console.log("Socket Id: ", socket.id);
  speechToTextUtils._socket = socket;
  
  // Define socket eventListeners.
  socket.on(
    "startGoogleCloudStream",
    (request: google.cloud.speech.v1.IStreamingRecognitionConfig) => {
      // Very long type, but alas that's what Google decided to use.
      speechToTextUtils._request = request;
      console.log("Starting Google Cloud Transcription");
      speechToTextUtils.startRecognitionStream();
    }
  );
  
  // Receive audio data from front-end
  socket.on("binaryAudioData", (data: DataView) => {
    speechToTextUtils.receiveData(data);
  });

  // End the audio stream
  socket.on("endGoogleCloudStream", () => {
    speechToTextUtils.stopRecognitionStream();
  });
});