dv_calculate_mb_xy  403 libavcodec/dvdec.c         dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);
dv_calculate_mb_xy  440 libavcodec/dvenc.c         dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);