JCS_UNKNOWN       399 jcparam.c        case JCS_UNKNOWN:
JCS_UNKNOWN       400 jcparam.c          jpeg_set_colorspace(cinfo, JCS_UNKNOWN);
JCS_UNKNOWN       479 jcparam.c        case JCS_UNKNOWN:
JCS_UNKNOWN       183 jdapimin.c         cinfo->jpeg_color_space = JCS_UNKNOWN;
JCS_UNKNOWN       184 jdapimin.c         cinfo->out_color_space = JCS_UNKNOWN;
JCS_UNKNOWN       219 jdmarker.c       cinfo->jpeg_color_space = JCS_UNKNOWN;