BASEVOL            58 libavcodec/adxdec.c         s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
BASEVOL            66 libavcodec/adxdec.c         s0 = (BASEVOL*d*scale + SCALE1*s1 - SCALE2*s2)>>14;
BASEVOL            50 libavcodec/adxenc.c         d = ((s0<<14) - SCALE1*s1 + SCALE2*s2)/BASEVOL;