read_bfraction    658 libavcodec/vc1.c         if (read_bfraction(v, gb) < 0)
read_bfraction    944 libavcodec/vc1.c             if (read_bfraction(v, gb) < 0)
read_bfraction    957 libavcodec/vc1.c             if (read_bfraction(v, gb) < 0)
read_bfraction   1199 libavcodec/vc1.c             if (read_bfraction(v, gb) < 0)