MIDDLE_BITS 226 libavformat/mp3dec.c if (MIDDLE_BITS(v, 13, 15) == 1) { MIDDLE_BITS 227 libavformat/mp3dec.c r_gain = MIDDLE_BITS(v, 0, 8) * 10000; MIDDLE_BITS 236 libavformat/mp3dec.c if (MIDDLE_BITS(v, 13, 15) == 2) { MIDDLE_BITS 237 libavformat/mp3dec.c a_gain = MIDDLE_BITS(v, 0, 8) * 10000;