hexagon search  	dia_size=512 + hexagon size (513 is the normal one used in h264) large to small diamond search         dia_size=256 + diamond size
hexagon search 
	dia_size=512 + hexagon size (513 is the normal one used in h264)
large to small diamond search
        dia_size=256 + diamond size


git-svn-id: a4d7c1866f8397a4106e0b57fc4fbf792bbdaaaf@7204 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg,prajnashi/ffmpeg