void MBPrediction(FRAMEINFO * frame, uint32_t x, uint32_t y, uint32_t mb_width, int16_t qcoeff[6 * 64], const int bound) { int32_t j; int32_t iDcScaler, iQuant; int S = 0; int16_t predictors[6][8]; MACROBLOCK *pMB = &frame->mbs[x + y * mb_width]; iQuant = pMB->quant; if ((pMB->mode == MODE_INTRA) || (pMB->mode == MODE_INTRA_Q)) { for (j = 0; j < 6; j++) { iDcScaler = get_dc_scaler(iQuant, j<4); predict_acdc(frame->mbs, x, y, mb_width, j, &qcoeff[j * 64], iQuant, iDcScaler, predictors[j], bound); if ((frame->vop_flags & XVID_VOP_HQACPRED)) S += calc_acdc_bits(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]); else S += calc_acdc_coeff(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]); } if (S<=0) { /* dont predict */ for (j = 0; j < 6; j++) pMB->acpred_directions[j] = 0; }else{ for (j = 0; j < 6; j++) apply_acdc(pMB, j, &qcoeff[j * 64], predictors[j]); } pMB->cbp = calc_cbp(qcoeff); } }
void MBPrediction(FRAMEINFO * frame, uint32_t x, uint32_t y, uint32_t mb_width, int16_t qcoeff[6 * 64]) { int32_t j; int32_t iDcScaler, iQuant = frame->quant; int32_t S = 0; int16_t predictors[6][8]; MACROBLOCK *pMB = &frame->mbs[x + y * mb_width]; if ((pMB->mode == MODE_INTRA) || (pMB->mode == MODE_INTRA_Q)) { for (j = 0; j < 6; j++) { iDcScaler = get_dc_scaler(iQuant, (j < 4) ? 1 : 0); predict_acdc(frame->mbs, x, y, mb_width, j, &qcoeff[j * 64], iQuant, iDcScaler, predictors[j], 0); S += calc_acdc(pMB, j, &qcoeff[j * 64], iDcScaler, predictors[j]); } if (S < 0) /* dont predict */ { for (j = 0; j < 6; j++) { pMB->acpred_directions[j] = 0; } } else { for (j = 0; j < 6; j++) { apply_acdc(pMB, j, &qcoeff[j * 64], predictors[j]); } } pMB->cbp = calc_cbp(qcoeff); } }
void decoder_mbintra(DECODER * dec, MACROBLOCK * pMB, const uint32 x_pos, const uint32 y_pos, const uint32 acpred_flag, const uint32 cbp, Bitstream * bs, const uint32 quant, const uint32 intra_dc_threshold) { uint32 stride = dec->edged_width; uint32 stride2 = stride / 2; uint32 next_block = stride * 8; uint32 i,j; uint32 iQuant = pMB->quant; uint8 *pY_Cur, *pU_Cur, *pV_Cur; pY_Cur = dec->cur.y + (y_pos << 4) * stride + (x_pos << 4); pU_Cur = dec->cur.u + (y_pos << 3) * stride2 + (x_pos << 3); pV_Cur = dec->cur.v + (y_pos << 3) * stride2 + (x_pos << 3); memset(block, 0, 6 * 64 * sizeof(int16)); int16* tmpBlock = NULL; for (i = 0; i < 6; i++) { uint32 iDcScaler = get_dc_scaler(iQuant, (i < 4) ? 1 : 0); int16 predictors[8]; int start_coeff; start_timer(); predict_acdc(dec->mbs, x_pos, y_pos, dec->mb_width, i, &block[i * 64], iQuant, iDcScaler, predictors, dec->slice); if (!acpred_flag) { pMB->acpred_directions[i] = 0; } stop_prediction_timer(); if (quant < intra_dc_threshold) { int dc_size; int dc_dif; dc_size = i < 4 ? get_dc_size_lum(bs) : get_dc_size_chrom(bs); dc_dif = dc_size ? get_dc_dif(bs, dc_size) : 0; if (dc_size > 8) { BitstreamSkip(bs, 1); // marker } block[i * 64] = dc_dif; start_coeff = 1; } else { start_coeff = 0; } start_timer(); if (cbp & (1 << (5 - i))) // coded { get_intra_block(bs, &block[i * 64], pMB->acpred_directions[i], start_coeff); } stop_coding_timer(); start_timer(); add_acdc(pMB, i, &block[i * 64], iDcScaler, predictors); stop_prediction_timer(); start_timer(); dequant_intra(&data[i * 64], &block[i * 64], iQuant, iDcScaler); stop_iquant_timer(); /*start_timer(); idct(&data[i * 64]); stop_idct_timer();*/ if(tmpBlock!=NULL) { start_timer(); idct_dual(tmpBlock, &data[i * 64]); stop_idct_timer(); tmpBlock = NULL; } else { tmpBlock = &data[i * 64]; } } start_timer(); transfer_16to8copy(pY_Cur, &data[0 * 64], stride); transfer_16to8copy(pY_Cur + 8, &data[1 * 64], stride); transfer_16to8copy(pY_Cur + next_block, &data[2 * 64], stride); transfer_16to8copy(pY_Cur + 8 + next_block, &data[3 * 64], stride); transfer_16to8copy(pU_Cur, &data[4 * 64], stride2); transfer_16to8copy(pV_Cur, &data[5 * 64], stride2); stop_transfer_timer(); #if 0 printf("(%d,%d)\n",x_pos,y_pos); printf("pY_Cur = [\n"); for (j = 0; j < 8; j++) for (i = 0; i < 8; i++) printf(((i+1)%8)? "%5d " : "%5d\n", pY_Cur[j * stride + i]); printf("\n"); printf("pY_Cur + 8 = [\n"); for (j = 0; j < 8; j++) for (i = 0; i < 8; i++) printf(((i+1)%8)? "%5d " : "%5d\n", (pY_Cur+8)[j * stride + i]); printf("\n"); printf("pY_Cur+ next_block = [\n"); for (j = 0; j < 8; j++) for (i = 0; i < 8; i++) printf(((i+1)%8)? "%5d " : "%5d\n", (pY_Cur+ next_block)[j * stride + i]); printf("\n"); printf("pY_Cur+ next_block +8= [\n"); for (j = 0; j < 8; j++) for (i = 0; i < 8; i++) printf(((i+1)%8)? "%5d " : "%5d\n", (pY_Cur+ next_block+8)[j * stride + i]); printf("\n"); #endif }