pred_block_mode  1179 libavcodec/diracdec.c     block->ref  = pred_block_mode(block, stride, x, y, DIRAC_REF_MASK_REF1);
pred_block_mode  1183 libavcodec/diracdec.c         block->ref |= pred_block_mode(block, stride, x, y, DIRAC_REF_MASK_REF2);
pred_block_mode  1195 libavcodec/diracdec.c         block->ref |= pred_block_mode(block, stride, x, y, DIRAC_REF_MASK_GLOBAL);