[XviD-devel] Fwd: is a bug?

[Michael Militzer]

Hi all,

I received this 'bug report' today by private mail. Actually, it's not
really a bug because it just describes a potential situation where we 
might do a diamond search twice but without any bad side effects (apart
from the speed loss).

I believe the report is correct and it might indeed be possible to 
slightly speed up extsearch by adding some more checks. The question is
just whether the additional checks would really make things faster or
whether the described case(s) are so rare that no speed-up is achieved.
However, the (0,0) case should be rather frequent...

Michael

----- Forwarded message from µËÐÛÊé <dengxiongshu at yulong.com> -----
    Date: Thu, 2 Sep 2004 17:24:47 +0800
    From: µËÐÛÊé <dengxiongshu at yulong.com>
Reply-To: µËÐÛÊé <dengxiongshu at yulong.com>
 Subject: is a bug?
      To: michael at xvid.org

Dear michael:
   When I read xivd source code,and I read function of SearchP in
estimation_pvop.c,and I find when MainSearch start from vector(0,0) used
xvid_me_DiamondSearch, if result motion vector is vector(0,0) and if define
XVID_ME_EXTSEARCH16 , then it will reapt seach from vector(0,0) used
xvid_me_DiamondSearch,it is necessarily? I think it should check
(MVequal(startMV,zeroMV)),and don't neet to search again.
   thanks
   your friends
   xiongshudeng, deng

mobile£º86-13246602770
e_mail£ºdengxiongshu at yulong.com
        xiongshudeng at sohu.com
        xiongshudeng at hotmail.com  
----- End forwarded message -----