cleanup by me
  indention fixed
  second one must be yv12touyvy instead of yv12toyuy2
  replace slow modulo by bitwise and
  move %16!=0 code before the comment saying the code cant handle %16!=0


git-svn-id: file:///var/local/repositories/mplayer/trunk/postproc@15825 b3059339-0415-0410-9bf9-f77b7e298cf2