AC3_CHMODE_3F1R   389 libavcodec/ac3dec.c     if (s->channel_mode == AC3_CHMODE_2F1R || s->channel_mode == AC3_CHMODE_3F1R) {
AC3_CHMODE_3F1R   741 libavcodec/ac3dec.c     case AC3_CHMODE_3F1R:
AC3_CHMODE_3F1R  2088 libavcodec/ac3enc.c     case AV_CH_LAYOUT_4POINT0:        s->channel_mode = AC3_CHMODE_3F1R;   break;