mp4decvop.c

audio-video-codecs.rar语音编解码器

    wC = wL >> 1;
    hC = hL >> 1;
#endif
    mp4_ExpandFrameReplicate(pInfo->VisualObject.cFrame.apY, wL, hL, 16 * MP4_NUM_EXT_MB, pInfo->VisualObject.cFrame.stepY);
    mp4_ExpandFrameReplicate(pInfo->VisualObject.cFrame.apCb, wC, hC, 8 * MP4_NUM_EXT_MB, pInfo->VisualObject.cFrame.stepCb);
    mp4_ExpandFrameReplicate(pInfo->VisualObject.cFrame.apCr, wC, hC, 8 * MP4_NUM_EXT_MB, pInfo->VisualObject.cFrame.stepCr);
/*
    if (pInfo->VisualObject.VideoObject.interlaced) {
        Ipp8u *psb, *pdb, *pst, *pdt;
        // pad fields
        psb = pInfo->VisualObject.cFrame.pY + pInfo->VisualObject.cFrame.stepY - 16;
        pdb = psb - (pInfo->VisualObject.cFrame.stepY << 1);
        pst = pInfo->VisualObject.cFrame.pY + pInfo->VisualObject.cFrame.stepY * (pInfo->VisualObject.VideoObject.height - 2) - 16;
        pdt = pst + (pInfo->VisualObject.cFrame.stepY << 1);
        for (i = 0; i < 8; i ++) {
            ippsCopy_8u(psb, pdb, pInfo->VisualObject.cFrame.stepY);
            pdb -= (pInfo->VisualObject.cFrame.stepY << 1);
            ippsCopy_8u(pst, pdt, pInfo->VisualObject.cFrame.stepY);
            pdt += (pInfo->VisualObject.cFrame.stepY << 1);
        }
    }
*/
}

mp4_Status mp4_DecodeVideoObjectPlane(mp4_Info* pInfo)
{
    mp4_Status  status = MP4_STATUS_OK;
    Ipp64s      vop_time;

    // set VOP time
    if (pInfo->VisualObject.VideoObject.short_video_header) {
        vop_time = pInfo->VisualObject.VideoObject.vop_sync_time + pInfo->VisualObject.VideoObject.VideoObjectPlaneH263.temporal_reference * 1001;
        if (pInfo->VisualObject.cFrame.time > vop_time) {
            pInfo->VisualObject.VideoObject.vop_sync_time += 256 * 1001;
            vop_time += 256 * 1001;
        }
    } else {
        if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coding_type == MP4_VOP_TYPE_B) {
            vop_time = pInfo->VisualObject.VideoObject.vop_sync_time_b + pInfo->VisualObject.VideoObject.VideoObjectPlane.modulo_time_base * pInfo->VisualObject.VideoObject.vop_time_increment_resolution + pInfo->VisualObject.VideoObject.VideoObjectPlane.time_increment;
        } else {
            if (pInfo->VisualObject.VideoObject.GroupOfVideoObjectPlane.time_code > pInfo->VisualObject.VideoObject.vop_sync_time)
                pInfo->VisualObject.VideoObject.vop_sync_time = pInfo->VisualObject.VideoObject.GroupOfVideoObjectPlane.time_code;
            vop_time = pInfo->VisualObject.VideoObject.vop_sync_time + pInfo->VisualObject.VideoObject.VideoObjectPlane.modulo_time_base * pInfo->VisualObject.VideoObject.vop_time_increment_resolution + pInfo->VisualObject.VideoObject.VideoObjectPlane.time_increment;
            if (pInfo->VisualObject.VideoObject.vop_sync_time_b < pInfo->VisualObject.VideoObject.vop_sync_time)
                pInfo->VisualObject.VideoObject.vop_sync_time_b = pInfo->VisualObject.VideoObject.vop_sync_time;
            if (pInfo->VisualObject.VideoObject.VideoObjectPlane.modulo_time_base != 0) {
                pInfo->VisualObject.VideoObject.vop_sync_time = vop_time - pInfo->VisualObject.VideoObject.VideoObjectPlane.time_increment;
            }
        }
    }
//  if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coded || vop_time != pInfo->VisualObject.rFrame.time) {
    if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coded ||
        (vop_time != pInfo->VisualObject.cFrame.time &&
         vop_time != pInfo->VisualObject.rFrame.time &&
         vop_time != pInfo->VisualObject.nFrame.time)) {
        switch (pInfo->VisualObject.VideoObject.VideoObjectPlane.coding_type) {
        case MP4_VOP_TYPE_I :
            // set new video frame
            if (pInfo->VisualObject.VideoObject.sprite_enable == MP4_SPRITE_STATIC) {
                mp4_SWAP(mp4_Frame, pInfo->VisualObject.sFrame, pInfo->VisualObject.cFrame);
            } else {
                if (pInfo->noPVOPs) {
                    pInfo->VisualObject.vFrame = &pInfo->VisualObject.cFrame;
                } else if (pInfo->noBVOPs) {
                    mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame);
                    pInfo->VisualObject.vFrame = &pInfo->VisualObject.cFrame;
                } else {
                    if (pInfo->VisualObject.VideoObject.VOPindex > 0) {
                        if (pInfo->VisualObject.VideoObject.prevPlaneIsB) {
                            mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.nFrame);
                            pInfo->VisualObject.VideoObject.prevPlaneIsB = 0;
                        } else {
                            mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame);
                        }
                        pInfo->VisualObject.vFrame = &pInfo->VisualObject.rFrame;
                    }
                }
            }
            if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coded) {
                if (pInfo->VisualObject.VideoObject.shape == MP4_SHAPE_TYPE_RECTANGULAR) {
#ifdef _OMP_KARABAS
                    if (!pInfo->VisualObject.VideoObject.data_partitioned && pInfo->num_threads >= 2)
                        status = mp4_DecodeVOP_I_MT(pInfo);
                    else
#endif
                    status = mp4_DecodeVOP_I(pInfo);
                } //f else
                    //f status = mp4_DecodeVOP_I_Shape(pInfo);
                if (pInfo->VisualObject.VideoObject.sprite_enable == MP4_SPRITE_STATIC && pInfo->VisualObject.VideoObject.VOPindex == 0) {
                    mp4_SWAP(mp4_Frame, pInfo->VisualObject.sFrame, pInfo->VisualObject.cFrame);
                    mp4_ExpandFrameReplicate(pInfo->VisualObject.sFrame.apY, pInfo->VisualObject.VideoObject.sprite_width, pInfo->VisualObject.VideoObject.sprite_height, 16, pInfo->VisualObject.sFrame.stepY);
                    mp4_ExpandFrameReplicate(pInfo->VisualObject.sFrame.apCb, pInfo->VisualObject.VideoObject.sprite_width >> 1, pInfo->VisualObject.VideoObject.sprite_height >> 1, 8, pInfo->VisualObject.sFrame.stepCb);
                    mp4_ExpandFrameReplicate(pInfo->VisualObject.sFrame.apCr, pInfo->VisualObject.VideoObject.sprite_width >> 1, pInfo->VisualObject.VideoObject.sprite_height >> 1, 8, pInfo->VisualObject.sFrame.stepCr);
                } else {
                    mp4_PadFrame(pInfo);
                }
                // set past and future time for B-VOP
                pInfo->VisualObject.VideoObject.rTime = pInfo->VisualObject.VideoObject.nTime;
                pInfo->VisualObject.VideoObject.nTime = vop_time;
#ifdef USE_NOTCODED_STATE
                // Clear not_coded MB state
                if ((pInfo->VisualObject.VideoObject.sprite_enable != MP4_SPRITE_STATIC) && pInfo->VisualObject.VideoObject.obmc_disable && !pInfo->VisualObject.VideoObject.ncStateCleared) {
                    ippsZero_8u(pInfo->VisualObject.VideoObject.ncState, pInfo->VisualObject.VideoObject.MacroBlockPerVOP);
                    pInfo->VisualObject.VideoObject.ncStateCleared = 1;
                }
#endif
            }
            mp4_StatisticInc(&pInfo->VisualObject.Statistic.nVOP_I);
            break;
        case MP4_VOP_TYPE_P :
            // set new video frame
            if (pInfo->noBVOPs) {
                mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame);
                pInfo->VisualObject.vFrame = &pInfo->VisualObject.cFrame;
            } else {
                if (pInfo->VisualObject.VideoObject.VOPindex > 0) {
                    if (pInfo->VisualObject.VideoObject.prevPlaneIsB) {
                        mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.nFrame);
                        pInfo->VisualObject.VideoObject.prevPlaneIsB = 0;
                    } else {
                        mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame);
                    }
                    pInfo->VisualObject.vFrame = &pInfo->VisualObject.rFrame;
                }
            }
            if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coded) {
#ifdef _OMP_KARABAS
                if (!pInfo->VisualObject.VideoObject.data_partitioned && pInfo->num_threads >= 2)
                    status = mp4_DecodeVOP_P_MT(pInfo);
                else
#endif
                status = mp4_DecodeVOP_P(pInfo);
                mp4_PadFrame(pInfo);
                // set past and future time for B-VOP
                pInfo->VisualObject.VideoObject.rTime = pInfo->VisualObject.VideoObject.nTime;
                pInfo->VisualObject.VideoObject.nTime = vop_time;
            }
            mp4_StatisticInc(&pInfo->VisualObject.Statistic.nVOP_P);
#ifdef USE_NOTCODED_STATE
            pInfo->VisualObject.VideoObject.ncStateCleared = 0;
#endif
            break;
        case MP4_VOP_TYPE_B :
            status = MP4_STATUS_OK;
            if (!pInfo->VisualObject.VideoObject.prevPlaneIsB) {
                mp4_SWAP(mp4_Frame, pInfo->VisualObject.nFrame, pInfo->VisualObject.cFrame);
                pInfo->VisualObject.VideoObject.prevPlaneIsB = 1;
            }
            // after reset it is need to skip first B-frames
            pInfo->VisualObject.vFrame = (pInfo->VisualObject.VideoObject.VOPindex < 2) ? NULL : &pInfo->VisualObject.cFrame;
            // set Tframe for direct interlaced mode
            if (!pInfo->VisualObject.VideoObject.Tframe)
                pInfo->VisualObject.VideoObject.Tframe = (Ipp32s)(vop_time - pInfo->VisualObject.rFrame.time);
            if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coded) {
                pInfo->VisualObject.VideoObject.TRB = (Ipp32s)(vop_time - pInfo->VisualObject.VideoObject.rTime);
                pInfo->VisualObject.VideoObject.TRD = (Ipp32s)(pInfo->VisualObject.VideoObject.nTime - pInfo->VisualObject.VideoObject.rTime);
                // defense from bad streams when B-VOPs are before Past and/or Future
                if (pInfo->VisualObject.VideoObject.TRB <= 0)
                    pInfo->VisualObject.VideoObject.TRB = 1;
                if (pInfo->VisualObject.VideoObject.TRD <= 0)
                    pInfo->VisualObject.VideoObject.TRD = 2;
                if (pInfo->VisualObject.VideoObject.TRD <= pInfo->VisualObject.VideoObject.TRB) {
                    pInfo->VisualObject.VideoObject.TRB = 1;
                    pInfo->VisualObject.VideoObject.TRD = 2;
                }
                if (pInfo->VisualObject.VideoObject.Tframe >= pInfo->VisualObject.VideoObject.TRD)
                    pInfo->VisualObject.VideoObject.Tframe = pInfo->VisualObject.VideoObject.TRB;
#ifdef _OMP_KARABAS
                if (pInfo->num_threads >= 2)
                    status = mp4_DecodeVOP_B_MT(pInfo);
                else
#endif
                status = mp4_DecodeVOP_B(pInfo);
            }
            mp4_StatisticInc(&pInfo->VisualObject.Statistic.nVOP_B);
            break;
        case MP4_VOP_TYPE_S :
            // set new video frame
            if (pInfo->VisualObject.VideoObject.sprite_enable == MP4_SPRITE_GMC) {
                if (pInfo->VisualObject.VideoObject.VOPindex > 0) {
                    if (pInfo->VisualObject.VideoObject.prevPlaneIsB) {
                        mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.nFrame);
                        pInfo->VisualObject.VideoObject.prevPlaneIsB = 0;
                    } else {
                        mp4_SWAP(mp4_Frame, pInfo->VisualObject.rFrame, pInfo->VisualObject.cFrame);
                    }
                    pInfo->VisualObject.vFrame = &pInfo->VisualObject.rFrame;
                }
            } else
                pInfo->VisualObject.vFrame = &pInfo->VisualObject.cFrame;
            if (pInfo->VisualObject.VideoObject.VideoObjectPlane.coded) {
#ifdef _OMP_KARABAS
                if (!pInfo->VisualObject.VideoObject.data_partitioned && pInfo->num_threads >= 2)
                    status = mp4_DecodeVOP_S_MT(pInfo);
                else
#endif
                status = mp4_DecodeVOP_S(pInfo);
                if (pInfo->VisualObject.VideoObject.sprite_enable == MP4_SPRITE_GMC) {
                    mp4_PadFrame(pInfo);
                    // set past and future time for B-VOP
                    pInfo->VisualObject.VideoObject.rTime = pInfo->VisualObject.VideoObject.nTime;
                    pInfo->VisualObject.VideoObject.nTime = vop_time;
                }
#ifdef USE_NOTCODED_STATE
                // Clear not_coded MB state
                if ((pInfo->VisualObject.VideoObject.sprite_enable != MP4_SPRITE_STATIC) && pInfo->VisualObject.VideoObject.obmc_disable && !pInfo->VisualObject.VideoObject.ncStateCleared) {
                    ippsZero_8u(pInfo->VisualObject.VideoObject.ncState, pInfo->VisualObject.VideoObject.MacroBlockPerVOP);
                    pInfo->VisualObject.VideoObject.ncStateCleared = 1;
                }
#endif
            }
            mp4_StatisticInc(&pInfo->VisualObject.Statistic.nVOP_S);
            break;
        }
        if (!pInfo->VisualObject.VideoObject.VideoObjectPlane.coded) {
            ippsCopy_8u(pInfo->VisualObject.rFrame.apY, pInfo->VisualObject.cFrame.apY, pInfo->VisualObject.cFrame.stepY * ((pInfo->VisualObject.VideoObject.MacroBlockPerCol + 2) << 4));
            ippsCopy_8u(pInfo->VisualObject.rFrame.apCb, pInfo->VisualObject.cFrame.apCb, pInfo->VisualObject.cFrame.stepCb * ((pInfo->VisualObject.VideoObject.MacroBlockPerCol + 2) << 3));
            ippsCopy_8u(pInfo->VisualObject.rFrame.apCr, pInfo->VisualObject.cFrame.apCr, pInfo->VisualObject.cFrame.stepCr * ((pInfo->VisualObject.VideoObject.MacroBlockPerCol + 2) << 3));
#ifdef USE_NOTCODED_STATE
            ippsSet_8u(1, pInfo->VisualObject.VideoObject.ncState, pInfo->VisualObject.VideoObject.MacroBlockPerVOP);
            pInfo->VisualObject.VideoObject.ncStateCleared = 0;
#endif
        }
        mp4_StatisticInc(&pInfo->VisualObject.Statistic.nVOP);
    }
    // save current VOP type
    pInfo->VisualObject.cFrame.type = pInfo->VisualObject.VideoObject.VideoObjectPlane.coding_type;
    // save current VOP time
    pInfo->VisualObject.cFrame.time = vop_time;
    return status;
}

/*
//  Intra DC and AC reconstruction for SVH macroblock
*/
mp4_Status mp4_DecodeIntraMB_SVH(mp4_Info *pInfo, Ipp32s pat, Ipp32s quant, Ipp8u *pR[], Ipp32s stepR[])
{
    __ALIGN16(Ipp16s, coeff, 64);
    Ipp32s  blockNum, pm = 32, lnz;

    for (blockNum = 0; blockNum < 6; blockNum ++) {
        if (ippiReconstructCoeffsIntra_H263_1u16s(&pInfo->bufptr, &pInfo->bitoff, coeff, &lnz, pat & pm, quant, 0, IPPVC_SCAN_ZIGZAG, 0) != ippStsNoErr) {
            mp4_Error("Error: decoding coefficients of Inter block");
            return MP4_STATUS_ERROR;
        }
        if (lnz > 0) {
            ippiDCT8x8Inv_16s8u_C1R(coeff, pR[blockNum], stepR[blockNum]);
        } else {
            mp4_Set8x8_8u(pR[blockNum], stepR[blockNum], (Ipp8u)((coeff[0] + 4) >> 3));
        }
        if (pat & pm) {
            mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTRA_AC);
        } else {
            mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nB_INTRA_DC);
        }
        pm >>= 1;
    }
    return MP4_STATUS_OK;
}


mp4_Status mp4_DecodeInterMB_SVH(mp4_Info *pInfo, Ipp16s *coeffMB, Ipp32s quant, Ipp32s pat)
{
    Ipp32s   i, lnz, pm = 32;
    Ipp16s *coeff = coeffMB;

    for (i = 0; i < 6; i ++) {
        if ((pat) & pm) {
            if (ippiReconstructCoeffsInter_H263_1u16s(&pInfo->bufptr, &pInfo->bitoff, coeff, &lnz, quant, 0) != ippStsNoErr) {
                mp4_Error("Error: decoding coefficients of Inter block");
                return MP4_STATUS_ERROR;
            }
            if (lnz != 0) {
                if ((lnz <= 4) && (coeff[16] == 0))