[theora-dev] theora 1.0a3 opt hint

[Makc]

in lib/blockmap.c,v 1.5 2003/12/03
func CreateMapping, inner loop code:
          if ( i<2 ){
            MB = ( j<2 ? 0 : 1 );
          }else{
            MB = ( j<2 ? 2 : 3 );
          }

          if ( i%2 ){
            B = ( j%2 ? 3 : 2 );
          }else{
            B = ( j%2 ? 1 : 0 );
          }
wouldn't this do better:
          MB = (i >> 1) * 2 + (j >> 1);
          B = (i % 2) * 2 + j % 2;
?

P.S.: I believe it could be optimized even further, but...

<p>--- >8 ----
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