c
2 JPEGSetupEncode(TIFF* tif) {
3     TIFFDirectory *td = &tif->tif_dir;
4     JPEGState *sp = (JPEGState*) tif->tif_data;
5     if (td->td_ycbcrsubsampling[0] == 0 || td->td_ycbcrsubsampling[1] == 0) {
6         TIFFErrorExt(tif->tif_clientdata, module,
7                      "Subsampling factors must not be zero");
8         return (0);
9     }
// Continue with the existing setup and checks
