VI6_RPF_EXT_INFMT1_PACK_CPOS
ext_infmt1 = VI6_RPF_EXT_INFMT1_PACK_CPOS(0, 10, 20, 0);
ext_infmt1 = VI6_RPF_EXT_INFMT1_PACK_CPOS(0, 10, 20, 30);
ext_infmt1 = VI6_RPF_EXT_INFMT1_PACK_CPOS(2, 12, 22, 0);