load static method

Future<Uint8List?> load(UArtworkRef ref)

Implementation

static Future<Uint8List?> load(UArtworkRef ref) async {
  if (ref.isEmpty) return null;
  final Uint8List? cached = peek(ref);
  if (cached != null) return cached;
  if (!ref.isEmbedded) return null;

  RandomAccessFile? handle;
  try {
    handle = await File(ref.filePath!).open();
    final int length = await handle.length();
    if (ref.offset < 0 || ref.offset >= length) return null;
    final int available = length - ref.offset;
    final int requested = ref.length > available ? available : ref.length;
    if (requested <= 0 || requested > _maxSingleArtwork) return null;
    await handle.setPosition(ref.offset);
    final Uint8List bytes = await handle.read(requested);
    _store(ref.cacheKey, bytes);
    return bytes;
  } on FileSystemException {
    return null;
  } finally {
    await handle?.close();
  }
}