lainTSX/scripts/extract/extract_voice.mjs

import { FileWriter } from "wav";
import { execSync } from "child_process";
import { readFileSync, mkdirSync, writeFileSync } from "fs";
import { join } from "path";

export function extract_voice(tempdir, jpsxdec_jar, disc1_index) {
  execSync(
    `java -jar ${jpsxdec_jar} -x "${disc1_index}" -i VOICE.BIN -dir "${tempdir}"`,
    { stdio: "inherit" }
  );
  const voice_files = JSON.parse(readFileSync("voice.json"));

  let voice_data = readFileSync(join(tempdir, "VOICE.BIN"));
  let output_folder = join("..", "..", "src", "static", "voice");

  mkdirSync(output_folder, { recursive: true });

  for (let voice_file of voice_files) {
    let path = join(output_folder, voice_file.translated_name);
    let data = voice_data.slice(
      voice_file.offset,
      voice_file.offset + voice_file.size
    );
    if (["BYA.WAV", "BYO.WAV", "BYU.WAV"].includes(voice_file.original_name)) {
      writeFileSync(path, data);
    } else {
      let wav_file = new FileWriter(path, {
        sampleRate: 22050,
        channels: 1,
        bitDepth: 16,
      });
      wav_file.write(data);
      wav_file.end();
    }
  }
}