code: def read_png_or_jpeg2000(fobj, start_length, size):
      (start, length) = start_length
      fobj.seek(start)
      sig = fobj.read(12)
      if sig[:8] == b"\x89PNG\x0d\x0a\x1a\x0a":
          fobj.seek(start)
          im = PngImagePlugin.PngImageFile(fobj)
          Image._decompression_bomb_check(im.size)
          return {"RGBA": im}
      elif (
          sig[:4] == b"\xff\x4f\xff\x51"
          or sig[:4] == b"\x0d\x0a\x87\x0a"
          or sig == b"\x00\x00\x00\x0cjP  \x0d\x0a\x87\x0a"
      ):
          if not enable_jpeg2k:
              msg = (
                  "Unsupported icon subimage format (rebuild PIL "
                  "with JPEG 2000 support to fix this)"
              )
              raise ValueError(msg)
          # j2k, jpc or j2c
          fobj.seek(start)
          jp2kstream = fobj.read(length)
          f = io.BytesIO(jp2kstream)
          im = Jpeg2KImagePlugin.Jpeg2KImageFile(f)
          Image._decompression_bomb_check(im.size)
          if im.mode != "RGBA":
              im = im.convert("RGBA")
          return {"RGBA": im}
      else:
          msg = "Unsupported icon subimage format"
          raise ValueError(msg)
  
imports: import io
  import os
  import struct
  import sys
  from .None import Image, ImageFile, PngImagePlugin, features
label_desc: Use image node_id 5 for calling a global function with example usage: read_png_or_jpeg2000(fobj, start_length, size) and returns: dict, dict