taglib-wasm/dist/src/taglib/load-audio-data.js

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

import {
  getFileSize,
  readFileData,
  readPartialFileData
} from "../utils/file.js";
import {
  metadataFitsInHeader,
  trailerFitsInFooter
} from "./metadata-extent.js";
async function loadAudioData(input, opts) {
  if (opts.partial && typeof File !== "undefined" && input instanceof File) {
    const headerSize = Math.min(opts.maxHeaderSize, input.size);
    const footerSize = Math.min(opts.maxFooterSize, input.size);
    if (input.size <= headerSize + footerSize) {
      return { data: await readFileData(input), isPartiallyLoaded: false };
    }
    const header = new Uint8Array(
      await input.slice(0, headerSize).arrayBuffer()
    );
    if (!metadataFitsInHeader(header, headerSize)) {
      return { data: await readFileData(input), isPartiallyLoaded: false };
    }
    const footerStart = Math.max(0, input.size - footerSize);
    const footer = new Uint8Array(await input.slice(footerStart).arrayBuffer());
    if (!trailerFitsInFooter(footer, footerSize)) {
      return { data: await readFileData(input), isPartiallyLoaded: false };
    }
    const combined = new Uint8Array(header.byteLength + footer.byteLength);
    combined.set(header, 0);
    combined.set(footer, header.byteLength);
    return { data: combined, isPartiallyLoaded: true };
  }
  if (opts.partial && typeof input === "string") {
    const fileSize = await getFileSize(input);
    if (fileSize > opts.maxHeaderSize + opts.maxFooterSize) {
      const data = await readPartialFileData(
        input,
        opts.maxHeaderSize,
        opts.maxFooterSize
      );
      if (metadataFitsInHeader(data, opts.maxHeaderSize) && trailerFitsInFooter(data, opts.maxFooterSize)) {
        return { data, isPartiallyLoaded: true };
      }
    }
    return { data: await readFileData(input), isPartiallyLoaded: false };
  }
  return { data: await readFileData(input), isPartiallyLoaded: false };
}
export {
  loadAudioData
};