AT1_SU_SIZE        48 libavcodec/atrac1.c #define AT1_FRAME_SIZE   AT1_SU_SIZE * 2
AT1_SU_SIZE        49 libavcodec/atrac1.c #define AT1_SU_MAX_BITS  AT1_SU_SIZE * 8
AT1_SU_SIZE        86 libavformat/aea.c     st->codecpar->block_align = AT1_SU_SIZE * st->codecpar->channels;