mp4decvopp.c

audio-video-codecs.rar语音编解码器

                                    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);
                            }
                        }
                    }
#ifdef USE_NOTCODED_STATE
                    ncState ++;
#endif
                    pMBinfo ++;
                    mvField += 2;
                    mbInVideoPacket ++;
                    colNum ++;
                    if (colNum == mbPerRow) {
                        colNum = 0;
                        rowNum ++;
                        if (rowNum == mbPerCol) {
                            // skip stuffing
                            while (mp4_ShowBits(pInfo, 10) == 1)
                                mp4_FlushBits(pInfo, 10);
                            return sts;
                        }
                        pYc += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYc << 4) - stepYc;
                        pCbc += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbc << 3) - stepCbc;
                        pCrc += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrc << 3) - stepCrc;
                        pYr += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYr << 4) - stepYr;
                        pCbr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbr << 3) - stepCbr;
                        pCrr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrr << 3) - stepCrr;
                    } else {
                        pYc += 16; pCrc += 8; pCbc += 8;
                        pYr += 16; pCrr += 8; pCbr += 8;
                    }
                }
                if (!pInfo->VisualObject.VideoObject.resync_marker_disable) {
                    Ipp32s  found;
ErrRet_3:
                    if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK) {
                        if (found) {
                            mbInVideoPacket = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num - mbCurr;
                            quant = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant_scale;
                            mbCurr = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num;
                            mp4_CopyMacroBlocks(&pInfo->VisualObject.rFrame, &pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum, mbCurr - rowNum * mbPerRow - colNum);
                            rowNum = mbCurr / mbPerRow;
                            colNum = mbCurr % mbPerRow;
                            pYc = pInfo->VisualObject.cFrame.pY + (rowNum * stepYc + colNum) * 16; pCbc = pInfo->VisualObject.cFrame.pCb + (rowNum * stepCbc + colNum) * 8; pCrc = pInfo->VisualObject.cFrame.pCr + (rowNum * stepCrc + colNum) * 8;
                            pYr = pInfo->VisualObject.rFrame.pY + (rowNum * stepYr + colNum) * 16; pCbr = pInfo->VisualObject.rFrame.pCb + (rowNum * stepCbr + colNum) * 8; pCrr = pInfo->VisualObject.rFrame.pCr + (rowNum * stepCrr + colNum) * 8;
                            pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
#ifdef USE_NOTCODED_STATE
                            ncState = pInfo->VisualObject.VideoObject.ncState + mbCurr;
#endif
                            mvField = pInfo->VisualObject.VideoObject.FieldMV + 2 * mbCurr;
                            break;
                        }
                    } else
                        goto Err_3;
                }
            }
            // mark MBs the previous videopacket as invalid for prediction
            for (i = 1; i <= IPP_MIN(mbInVideoPacket, mbPerRow + 1); i ++) {
                pMBinfo[-i].validPred = 0;
            }
        }
Err_3:
        sts = MP4_STATUS_ERROR;
        if (pInfo->stopOnErr)
            return sts;
        if (pInfo->VisualObject.VideoObject.resync_marker_disable || !mp4_SeekResyncMarker(pInfo)) {
            mp4_CopyMacroBlocks(&pInfo->VisualObject.rFrame, &pInfo->VisualObject.cFrame, mbPerRow, rowNum, colNum,  pInfo->VisualObject.VideoObject.MacroBlockPerVOP - rowNum * mbPerRow - colNum);
            return sts;
        }
        goto ErrRet_3;
    }
// decode usual P-VOP
    {
        for (;;) {
            // reset Intra prediction buffer on new Video_packet
            mp4_ResetIntraPredBuffer(pInfo);
            mbInVideoPacket = 0;
            // decode blocks
            for (;;) {
                if (colNum == 0) {
                    // reset B-prediction blocks on new row
                    mp4_ResetIntraPredBblock(pInfo);
                }
                mb_not_coded = mp4_GetBit(pInfo);
                mb_type = IPPVC_MBTYPE_INTER;
                if (!mb_not_coded)
                    if (mp4_DecodeMCBPC_P(pInfo, &mb_type, &cbpc, 1) != MP4_STATUS_OK)
                        goto Err_4;
                if (mb_type != IPPVC_MB_STUFFING) {
                    if (!mb_not_coded) {
                        if (mb_type >= IPPVC_MBTYPE_INTRA)
                            ac_pred_flag = mp4_GetBit(pInfo);
                        if (mp4_DecodeCBPY_P(pInfo, &cbpy, mb_type) != MP4_STATUS_OK)
                            goto Err_4;
                        quantPred = quant;
                        if (mb_type == IPPVC_MBTYPE_INTER_Q || mb_type == IPPVC_MBTYPE_INTRA_Q)
                            mp4_UpdateQuant(pInfo, quant);
                    } else {
                        mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
                        mp4_Zero4MV(pMBinfo->mv);
                    }
                    pMBinfo->validPred = 1;
                    pMBinfo->not_coded = (Ipp8u)mb_not_coded;
                    pMBinfo->type = (Ipp8u)mb_type;
                    if (mb_type >= IPPVC_MBTYPE_INTRA) {
                        if (mbInVideoPacket == 0)
                            quantPred = quant;
                        dcVLC = (quantPred < mp4_DC_vlc_Threshold[pInfo->VisualObject.VideoObject.VideoObjectPlane.intra_dc_vlc_thr]) ? 1 : 0;
                        pFc[0] = pYc; pFc[1] = pYc + 8; pFc[2] = pYc + 8 * stepYc; pFc[3] = pYc + 8 * stepYc + 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)
                            goto Err_4;
                        mp4_Zero4MV(pMBinfo->mv);
#ifdef USE_NOTCODED_STATE
                        // clear not_coded MB state
                        *ncState = 0;
#endif
                    } else {
                        mp4_UpdateIntraPredBuffInvalid(pInfo, colNum);
                        if (!mb_not_coded) {
                            dx = colNum * 16;
                            dy = rowNum * 16;
                            if (mb_type != IPPVC_MBTYPE_INTER4V) {
                                if (mp4_PredictDecode1MV(pInfo, pMBinfo, rowNum, colNum) != MP4_STATUS_OK)
                                    goto Err_4;
                                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)
                                    goto Err_4;
                                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);
                            }
                        }
                        if (obmc_disable) {
                            if (mb_not_coded) {
#ifdef USE_NOTCODED_STATE
                                if (!(*ncState)) {
                                    *ncState = 1;
#endif
                                    ippiCopy16x16_8u_C1R(pYr, stepYr, pYc, stepYc);
                                    ippiCopy8x8_8u_C1R(pCbr, stepCbr, pCbc, stepCbc);
                                    ippiCopy8x8_8u_C1R(pCrr, stepCrr, pCrc, stepCrc);
#ifdef USE_NOTCODED_STATE
                                }
#endif
                            } else {
#ifdef USE_NOTCODED_STATE
                                // clear not_coded MB state
                                *ncState = 0;
#endif
                                if (quarter_sample) {
                                    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+8*stepYr, stepYr, pYc+8*stepYc, 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);
                                    mp4_DecodeReconBlockInter_MPEG4(cbpy & 8, pYc, stepYc, Err_4);
                                    mp4_DecodeReconBlockInter_MPEG4(cbpy & 4, pYc+8, stepYc, Err_4);
                                    mp4_DecodeReconBlockInter_MPEG4(cbpy & 2, pYc+8*stepYc, stepYc, Err_4);
                                    mp4_DecodeReconBlockInter_MPEG4(cbpy & 1, pYc+8*stepYc+8, stepYc, Err_4);
                                } else {
                                    if (cbpy || mb_type == IPPVC_MBTYPE_INTER4V) {
                                        mp4_DecodeMCBlockInter_MPEG4(cbpy & 8, pYr, stepYr, pYc, stepYc, mvCur[0], rt, Err_4);
                                        mp4_DecodeMCBlockInter_MPEG4(cbpy & 4, pYr+8, stepYr, pYc+8, stepYc, mvCur[1], rt, Err_4);
                                        mp4_DecodeMCBlockInter_MPEG4(cbpy & 2, pYr+8*stepYr, stepYr, pYc+8*stepYc, stepYc, mvCur[2], rt, Err_4);
                                        mp4_DecodeMCBlockInter_MPEG4(cbpy & 1, pYr+8*stepYr+8, stepYr, pYc+8*stepYc+8, stepYc, mvCur[3], rt, Err_4);
                                    } else {
                                        mp4_Copy16x16HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
                                        mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTER_NC);