[XviD-devel] a new problem!

[张庆先]

I am studying the decoder of Xvid.When I read the following statement, I felt puzzled:

    if (!BitstreamGetBit(bs)) /* complexity_estimation_disable */
    {
     DPRINTF(DPRINTF_ERROR, "complexity_estimation not supported");
     return -1;
    }

According to the bitstream syntax of MEPG4,
it  likes that:
if(!complexity_estimation_disable )
    define_vop_complexity_estimation_header();

So I think the Xvid decoder has not supportted complexity estimation? Why?