static int check_intra_pred_mode(int mode, int mb_x, int mb_y) { if (mode == DC_PRED8x8) { if (!(mb_x|mb_y)) mode = DC_128_PRED8x8; else if (!mb_y) mode = LEFT_DC_PRED8x8; else if (!mb_x) mode = TOP_DC_PRED8x8; } return mode; }