_primary.vhd

this come from alter ,you can look and find it on line about h263.

library verilog;
use verilog.vl_types.all;
entity vittest is
    generic(
        add_errors      : integer := 1;
        error_rate      : integer := 10;
        out_of_sync     : integer := 0;
        testencpause    : integer := 0;
        testdecpause    : integer := 1;
        len             : integer := 6400;
        lenwidth        : integer := 13;
        period          : integer := 20;
        asyncrststart   : integer := 107;
        asyncrst        : integer := 36;
        st_start        : integer := 1;
        st_enc          : integer := 2;
        st_enclast      : integer := 3;
        st_adderrors    : integer := 4;
        st_desync       : integer := 5;
        st_dec          : integer := 6;
        st_decwait      : integer := 7;
        st_final        : integer := 8;
        rxst_0          : integer := 0;
        rxst_1          : integer := 1;
        rxst_2          : integer := 2
    );
end vittest;