mp4decvopp.c

这是在PCA下的基于IPP库示例代码例子,在网上下了IPP的库之后,设置相关参数就可以编译该代码.

                        if (mb_type == IPPVC_MBTYPE_INTER_Q || mb_type == IPPVC_MBTYPE_INTRA_Q)
                            mp4_UpdateQuant(pInfo, quant);
                        dct_type = 0;
                        field_prediction = 0;
                        if (mb_type >= IPPVC_MBTYPE_INTRA || (cbpy + cbpc) != 0)
                            dct_type = mp4_GetBit(pInfo);
                        if (mb_type == IPPVC_MBTYPE_INTER || mb_type == IPPVC_MBTYPE_INTER_Q) {
                            field_prediction = mp4_GetBit(pInfo);
                            if (field_prediction) {
                                mb_ftfr = mp4_GetBit(pInfo);
                                mb_fbfr = mp4_GetBit(pInfo);
                            }
                        }
                    } else {
                        mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
                        mp4_Zero4MV(pMBinfo->mv);
                        field_prediction = 0;
                    }
                    pMBinfo->validPred = 1;
                    pMBinfo->not_coded = (Ipp8u)mb_not_coded;
                    pMBinfo->type = (Ipp8u)mb_type;
                    pMBinfo->field_info = (Ipp8u)(field_prediction + (mb_ftfr << 1) + (mb_fbfr << 2));
                    if (mb_type >= IPPVC_MBTYPE_INTRA) {
                        if (mbCurr == 0)
                            quantPred = quant;
                        dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
                        if (dct_type) {
                            stepY = stepYc * 2;
                            pYoff23 = stepYc;
                        } else {
                            stepY = stepYc;
                            pYoff23 = 8 * stepYc;
                        }
                        stepFc[0] = stepFc[1] = stepFc[2] = stepFc[3] = stepY;
                        pFc[0] = pYc; pFc[1] = pYc + 8; pFc[2] = pYc + pYoff23; pFc[3] = pYc + pYoff23 + 8; pFc[4] = pCbc; pFc[5] = pCrc;
                        if (mp4_DecodeIntraMB(pInfo, colNum, (cbpy << 2) + cbpc, quant, dcVLC, ac_pred_flag, pFc, stepFc) != MP4_STATUS_OK) {
                            mp4_Error("Error when decode coefficients of Intra block");
                            return MP4_STATUS_ERROR;
                        }
                        mp4_Zero4MV(pMBinfo->mv);
                    } else {
                        mp4_UpdateIntraPredBuffInvalid(pInfo, colNum);
                        if (!mb_not_coded) {
                            dx = colNum * 16;
                            dy = rowNum * 16;
                            if (!field_prediction) {
                                if (mb_type != IPPVC_MBTYPE_INTER4V) {
                                    if (mp4_PredictDecode1MV(pInfo, pMBinfo, rowNum, colNum) != MP4_STATUS_OK) {
                                        mp4_Error("Error when decode motion vector");
                                        return MP4_STATUS_ERROR;
                                    }
                                    pMBinfo->mv[1] = pMBinfo->mv[2] = pMBinfo->mv[3] = pMBinfo->mv[0];
                                    if (quarter_sample) {
                                        mp4_LimitMVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
                                        mp4_ComputeChromaMVQ(mvCur, &mvCbCr);
                                    } else {
                                        mp4_LimitMV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
                                        mp4_ComputeChromaMV(mvCur, &mvCbCr);
                                    }
                                    mvCur[1] = mvCur[2] = mvCur[3] = mvCur[0];
                                } else {
                                    if (mp4_PredictDecode4MV(pInfo, pMBinfo, rowNum, colNum) != MP4_STATUS_OK) {
                                        mp4_Error("Error when decode motion vector");
                                        return MP4_STATUS_ERROR;
                                    }
                                    if (quarter_sample) {
                                        mp4_Limit4MVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
                                        mp4_ComputeChroma4MVQ(pMBinfo->mv, &mvCbCr);
                                    } else {
                                        mp4_Limit4MV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
                                        mp4_ComputeChroma4MV(pMBinfo->mv, &mvCbCr);
                                    }
                                    mp4_LimitMV(&mvCbCr, &mvCbCr, &limitRectC, dx >> 1, dy >> 1, 8);
                                }
                            } else {
                                IppMotionVector  mvFT, mvFB;
                                if (mp4_PredictDecodeFMV(pInfo, pMBinfo, rowNum, colNum, &mvFT, &mvFB) != MP4_STATUS_OK) {
                                    mp4_Error("Error when decode motion vector");
                                    return MP4_STATUS_ERROR;
                                }
                                mvField[0] = mvFT; mvField[1] = mvFB;
                                if (quarter_sample) {
                                    mp4_LimitFMVQ(&mvFT, &mvCur[0], &limitRectL, dx, dy, 16);
                                    mp4_LimitFMVQ(&mvFB, &mvCur[2], &limitRectL, dx, dy, 16);
                                    mvTmp[0].dx = (Ipp16s)mp4_Div2(mvCur[0].dx);
                                    mvTmp[0].dy = (Ipp16s)(mp4_Div2(mvCur[0].dy << 1) >> 1);
                                    mvTmp[2].dx = (Ipp16s)mp4_Div2(mvCur[2].dx);
                                    mvTmp[2].dy = (Ipp16s)(mp4_Div2(mvCur[2].dy << 1) >> 1);
                                    mp4_ComputeChromaMV(&mvTmp[0], &mvCbCrT);
                                    mp4_ComputeChromaMV(&mvTmp[2], &mvCbCrB);
                                } else {
                                    mp4_LimitFMV(&mvFT, &mvCur[0], &limitRectL, dx, dy, 16);
                                    mp4_LimitFMV(&mvFB, &mvCur[2], &limitRectL, dx, dy, 16);
                                    mp4_ComputeChromaMV(&mvCur[0], &mvCbCrT);
                                    mp4_ComputeChromaMV(&mvCur[2], &mvCbCrB);
                                }
                            }
                        }
                    }
                    if (!obmc_disable) {
                        // OBMC for previous MB
                        if (colNum > 0)
                            if (pMBinfo[-1].type < IPPVC_MBTYPE_INTRA && !(pMBinfo[-1].field_info & 1))
                                mp4_OBMC(pInfo, pMBinfo - 1, mvPrev, colNum - 1, rowNum, limitRectL, pYc - 16, stepYc, pYr - 16, stepYr, cbpyPrev, coeffMB, dct_typePrev);
                        if (mb_type < IPPVC_MBTYPE_INTRA && !field_prediction) {
                            if (mb_not_coded) {
                                cbpyPrev = 0;
                                mp4_Zero4MV(mvPrev);
                                ippiCopy8x8_8u_C1R(pCbr, stepCbr, pCbc, stepCbc);
                                ippiCopy8x8_8u_C1R(pCrr, stepCrr, pCrc, stepCrc);
                            } else {
                                cbpyPrev = cbpy;
                                dct_typePrev = dct_type;
                                mvPrev[0] = mvCur[0]; mvPrev[1] = mvCur[1]; mvPrev[2] = mvCur[2]; mvPrev[3] = mvCur[3];
                                if (mp4_DecodeInterMB(pInfo, coeffMB, quant, (cbpy << 2) + cbpc, scan) != MP4_STATUS_OK) {
                                    mp4_Error("Error when decode coefficients of Inter block");
                                    return MP4_STATUS_ERROR;
                                }
                                mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
                                mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
                            }
                            // OBMC current MB if it is the last in the row
                            if (colNum == mbPerRow - 1)
                                mp4_OBMC(pInfo, pMBinfo, mvPrev, colNum, rowNum, limitRectL, pYc, stepYc, pYr, stepYr, cbpyPrev, coeffMB, dct_typePrev);
                        }
                    }
                    if (mb_type < IPPVC_MBTYPE_INTRA && (obmc_disable || field_prediction)) {
                        if (mb_not_coded) {
                            ippiCopy16x16_8u_C1R(pYr, stepYr, pYc, stepYc);
                            ippiCopy8x8_8u_C1R(pCbr, stepCbr, pCbc, stepCbc);
                            ippiCopy8x8_8u_C1R(pCrr, stepCrr, pCrc, stepCrc);
                        } else {
                            if (mp4_DecodeInterMB(pInfo, coeffMB, quant, (cbpy << 2) + cbpc, scan) != MP4_STATUS_OK) {
                                mp4_Error("Error when decode coefficients of Inter block");
                                return MP4_STATUS_ERROR;
                            }
                            if (quarter_sample) {
                                if (!field_prediction) {
                                    if (mb_type == IPPVC_MBTYPE_INTER4V) {
                                        mp4_Copy8x8QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
                                        mp4_Copy8x8QP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
                                        mp4_Copy8x8QP_8u(pYr+stepYr*8, stepYr, pYc+stepYc*8, stepYc, &mvCur[2], rt);
                                        mp4_Copy8x8QP_8u(pYr+8+stepYr*8, stepYr, pYc+8+stepYc*8, stepYc, &mvCur[3], rt);
                                    } else
                                        mp4_Copy16x16QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
                                } else {
                                    mp4_Copy16x8QP_8u(pYr+stepYr*mb_ftfr, stepYr*2, pYc, stepYc*2, &mvCur[0], rt);
                                    mp4_Copy16x8QP_8u(pYr+stepYr*mb_fbfr, stepYr*2, pYc+stepYc, stepYc*2, &mvCur[2], rt);
                                }
                            } else {
                                if (!field_prediction) {
                                    if (mb_type == IPPVC_MBTYPE_INTER4V) {
                                        mp4_Copy8x8HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
                                        mp4_Copy8x8HP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
                                        mp4_Copy8x8HP_8u(pYr+stepYr*8, stepYr, pYc+stepYc*8, stepYc, &mvCur[2], rt);
                                        mp4_Copy8x8HP_8u(pYr+8+stepYr*8, stepYr, pYc+8+stepYc*8, stepYc, &mvCur[3], rt);
                                    } else {
                                        mp4_Copy16x16HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
                                    }
                                } else {
                                    mp4_Copy16x8HP_8u(pYr+stepYr*mb_ftfr, stepYr*2, pYc, stepYc*2, &mvCur[0], rt);
                                    mp4_Copy16x8HP_8u(pYr+stepYr*mb_fbfr, stepYr*2, pYc+stepYc, stepYc*2, &mvCur[2], rt);
                                }
                            }
                            if (!dct_type) {
                                mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
                                mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
                                mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
                                mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
                            } else {
                                mp4_AddResidual(cbpy & 8, pYc, stepYc*2, coeffMB);
                                mp4_AddResidual(cbpy & 4, pYc+8, stepYc*2, coeffMB+64);
                                mp4_AddResidual(cbpy & 2, pYc+stepYc, stepYc*2, coeffMB+128);
                                mp4_AddResidual(cbpy & 1, pYc+stepYc+8, stepYc*2, coeffMB+192);
                            }
                            if (!field_prediction) {
                                mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
                                mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
                            } else {
                                mp4_Copy8x4HP_8u(pCbr+(mb_ftfr ? stepCbr : 0), stepCbr*2, pCbc, stepCbc*2, &mvCbCrT, rt);
                                mp4_Copy8x4HP_8u(pCrr+(mb_ftfr ? stepCrr : 0), stepCrr*2, pCrc, stepCrc*2, &mvCbCrT, rt);
                                mp4_Copy8x4HP_8u(pCbr+(mb_fbfr ? stepCbr : 0), stepCbr*2, pCbc+stepCbc, stepCbc*2, &mvCbCrB, rt);
                                mp4_Copy8x4HP_8u(pCrr+(mb_fbfr ? stepCrr : 0), stepCrr*2, pCrc+stepCrc, stepCrc*2, &mvCbCrB, rt);
                                mp4_AddResidual(cbpc & 2, pCbc, stepCbc, coeffMB+256);
                                mp4_AddResidual(cbpc & 1, pCrc, stepCrc, coeffMB+320);
                            }
                        }
                    }
                    mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB);
                    mbCurr ++;
                    if (mbCurr == nmb) {
                        // skip stuffing
                        while (mp4_ShowBits(pInfo, 10) == 1)
                            mp4_FlushBits(pInfo, 10);
                        return MP4_STATUS_OK;
                    }
                    pMBinfo ++;
                    mvField += 2;
                    mbInVideoPacket ++;
                    colNum ++;
                    if (colNum == mbPerRow) {
                        colNum = 0;
                        rowNum ++;
                        pYc += 3 * MP4_NUM_EXT_MB * 16 + (stepYc << 4) - stepYc;
                        pCbc += 3 * MP4_NUM_EXT_MB * 8 + (stepCbc << 3) - stepCbc;
                        pCrc += 3 * MP4_NUM_EXT_MB * 8 + (stepCrc << 3) - stepCrc;
                        pYr += 3 * MP4_NUM_EXT_MB * 16 + (stepYr << 4) - stepYr;
                        pCbr += 3 * MP4_NUM_EXT_MB * 8 + (stepCbr << 3) - stepCbr;
                        pCrr += 3 * MP4_NUM_EXT_MB * 8 + (stepCrr << 3) - stepCrr;
                    } else {
                        pYc += 16; pCrc += 8; pCbc += 8;
                        pYr += 16; pCrr += 8; pCbr += 8;
                    }
                }
                if (!pInfo->VisualObject.VideoObject.resync_marker_disable) {
                    int  found;
                    if (mp4_DecodeVideoPacket(pInfo, &quant, &found) == MP4_STATUS_OK) {
                        if (found)
                            break;
                    } else
                        return MP4_STATUS_ERROR;
                }
            }
            // mark MBs the previous videopacket as invalid for prediction
            for (i = 1; i <= IPP_MIN(mbInVideoPacket, mbPerRow + 1); i ++) {
                pMBinfo[-i].validPred = 0;