PRED              317 libavcodec/tta.c         case 1: *p += PRED(*predictor, 4); break;
PRED              319 libavcodec/tta.c         case 3: *p += PRED(*predictor, 5); break;
PRED              149 libavcodec/ttaenc.c         case 1: value -= PRED(c->predictor, 4); break;
PRED              151 libavcodec/ttaenc.c         case 3: value -= PRED(c->predictor, 5); break;