taglib-wasm/dist/src/web-utils/data-url.js

TagLib-Wasm is the universal tagging library for TypeScript/JavaScript platforms: Browsers, Node.js, Deno, Bun, Cloudflare Workers, and Electron apps

import { InvalidFormatError } from "../errors/classes.js";
function pictureToDataURL(picture) {
  let binary = "";
  for (const byte of picture.data) {
    binary += String.fromCodePoint(byte);
  }
  const base64 = btoa(binary);
  return `data:${picture.mimeType};base64,${base64}`;
}
function dataURLToPicture(dataURL, type = "FrontCover", description) {
  const regex = /^data:([^;]+);base64,(.+)$/;
  const matches = regex.exec(dataURL);
  if (!matches) {
    throw new InvalidFormatError("Invalid data URL format");
  }
  const [, mimeType, base64] = matches;
  const binaryString = atob(base64);
  const data = new Uint8Array(binaryString.length);
  for (let i = 0; i < binaryString.length; i++) {
    data[i] = binaryString.codePointAt(i);
  }
  return {
    mimeType,
    data,
    type,
    description
  };
}
export {
  dataURLToPicture,
  pictureToDataURL
};