code: public static int getDecompressedLength(byte[] src, int srcOff) {
      return (src[srcOff] & 0xFF) | (src[srcOff + 1] & 0xFF) << 8 | (src[srcOff + 2] & 0xFF) << 16 | src[srcOff + 3] << 24;
    }
docs: Returns the decompressed length of compressed data in <code>src[srcOff:]</code>.
  
  @param src the compressed data
  @param srcOff the start offset in src
  @return the decompressed length