CHECK_BIDIR2     1361 libavcodec/motion_est.c             CHECK_BIDIR2(0,0,0,1)
CHECK_BIDIR2     1362 libavcodec/motion_est.c             CHECK_BIDIR2(0,0,1,0)
CHECK_BIDIR2     1363 libavcodec/motion_est.c             CHECK_BIDIR2(0,1,0,0)
CHECK_BIDIR2     1364 libavcodec/motion_est.c             CHECK_BIDIR2(1,0,0,0)