DCORE_VDEC_OFFSET
dec_id * DCORE_VDEC_OFFSET;
offset = dcore_id * DCORE_OFFSET + dec_id * DCORE_VDEC_OFFSET;
dec_id * DCORE_VDEC_OFFSET;
dec_id * DCORE_VDEC_OFFSET;
DCORE_VDEC_OFFSET * (dec_index % NUM_OF_DEC_PER_DCORE);