APP0_DATA_LEN     630 jdmarker.c       if (datalen >= APP0_DATA_LEN &&
APP0_DATA_LEN     660 jdmarker.c         totallen -= APP0_DATA_LEN;
APP0_DATA_LEN    1366 jdmarker.c         if (marker_code == (int) M_APP0 && length_limit < APP0_DATA_LEN)
APP0_DATA_LEN    1367 jdmarker.c           length_limit = APP0_DATA_LEN;