umc_vc1_dec_ppic_adv.cpp

audio-video-codecs.rar语音编解码器

        }
        else
        {
            VC1_GET_BITS(1, picLayerHeader->DMVRANGE);
            if(picLayerHeader->DMVRANGE==0)
            {
               //binary code 10
               picLayerHeader->DMVRANGE = VC1_DMVRANGE_HORIZONTAL_RANGE;
            }
            else
            {
                VC1_GET_BITS(1, picLayerHeader->DMVRANGE);
                if(picLayerHeader->DMVRANGE==0)
                {
                    //binary code 110
                    picLayerHeader->DMVRANGE = VC1_DMVRANGE_VERTICAL_RANGE;
                }
                else
                {
                    //binary code 111
                    picLayerHeader->DMVRANGE = VC1_DMVRANGE_HORIZONTAL_VERTICAL_RANGE;
                }
            }
        }
    }

    //4 motion vector switch
    VC1_GET_BITS(1, picLayerHeader->MV4SWITCH);
    if(picLayerHeader->MV4SWITCH)
       picLayerHeader->MVMODE = VC1_MVMODE_MIXED_MV;
    else
       picLayerHeader->MVMODE = VC1_MVMODE_1MV;

    //intensity compensation
    VC1_GET_BITS(1, tempValue);       //INTCOMP

    if(tempValue)       //INTCOM
    {
        pContext->m_bIntensityCompensation = 1;
        VC1_GET_BITS(6, LUMSCALE);
        VC1_GET_BITS(6, LUMSHIFT);

       STATISTICS_START_TIME(m_timeStatistics->intensity_StartTime);

       FillTablesForIntensityCompensation_Adv(pContext,LUMSCALE,LUMSHIFT,
           0,pContext->m_frmBuff.m_iPrevIndex);

       STATISTICS_END_TIME(m_timeStatistics->intensity_StartTime,
                        m_timeStatistics->intensity_EndTime,
                        m_timeStatistics->intensity_TotalTime);

       //pContext->m_frmBuff.m_pFrames[pContext->m_frmBuff.m_iPrevIndex].m_bIsExpanded = 0;
       //if (pContext->typeOfPreviousFrame != VC1_FieldInterlace)
       //ExpandIntens_table[pContext->typeOfPreviousFrame](pContext, &pContext->m_frmBuff.m_pFrames[pContext->m_frmBuff.m_iPrevIndex]);
       //else
       //ExpandFrame_Interlace(pContext, &pContext->m_frmBuff.m_pFrames[pContext->m_frmBuff.m_iPrevIndex]);
    }


    //skipped macroblock bit syntax element
    DecodeBitplane(pContext, &picLayerHeader->SKIPMB,
                   seqLayerHeader->widthMB, seqLayerHeader->heightMB,0);

    //motion vector table
    VC1_GET_BITS(2, picLayerHeader->MBMODETAB);       //MBMODETAB
    ChooseMBModeInterlaceFrame(pContext, picLayerHeader->MV4SWITCH, picLayerHeader->MBMODETAB);

    //motion vector table
    VC1_GET_BITS(2,picLayerHeader->MVTAB);       //MVTAB
    picLayerHeader->m_pCurrMVDifftbl =
                pContext->m_vlcTbl->MV_INTERLACE_TABLES[8 + picLayerHeader->MVTAB]; //MVTAB


    //coded block pattern table
    VC1_GET_BITS(3,picLayerHeader->CBPTAB);       //CBPTAB
    picLayerHeader->m_pCurrCBPCYtbl =
                 pContext->m_vlcTbl->CBPCY_PB_INTERLACE_TABLES[picLayerHeader->CBPTAB];     //CBPTAB

    VC1_GET_BITS(2, picLayerHeader->MV2BPTAB);       //MV2BPTAB
    picLayerHeader->m_pMV2BP = pContext->m_vlcTbl->MV2BP_TABLES[picLayerHeader->MV2BPTAB];

    if(picLayerHeader->MV4SWITCH)
    {
        VC1_GET_BITS(2, picLayerHeader->MV4BPTAB)        //MV4BPTAB;
        picLayerHeader->m_pMV4BP = pContext->m_vlcTbl->MV4BP_TABLES[picLayerHeader->MV4BPTAB];
    }

    vc1Res = VOPDQuant(pContext);

    if(seqLayerHeader->VSTRANSFORM == 1)
    {
        //macroblock - level transform type flag
        VC1_GET_BITS(1, picLayerHeader->TTMBF);

        if(picLayerHeader->TTMBF)
        {
            //frame-level transform type
            VC1_GET_BITS(2, picLayerHeader->TTFRM_ORIG);
            picLayerHeader->TTFRM = 1 << picLayerHeader->TTFRM_ORIG;
        }
        else
            picLayerHeader->TTFRM = VC1_BLK_INTER;
    }
    else
    {
        picLayerHeader->TTFRM = VC1_BLK_INTER8X8;
    }

    //frame-level transform AC Coding set index
    VC1_GET_BITS(1, picLayerHeader->TRANSACFRM);//TRANSACFRM
    if(picLayerHeader->TRANSACFRM == 1)
    {
        VC1_GET_BITS(1, picLayerHeader->TRANSACFRM);
        picLayerHeader->TRANSACFRM++;
    }
    ChooseACTable(picLayerHeader, picLayerHeader->TRANSACFRM, picLayerHeader->TRANSACFRM);//TRANSACFRM

    VC1_GET_BITS(1, picLayerHeader->TRANSDCTAB);       //TRANSDCTAB
    ChooseDCTable(pContext, picLayerHeader->TRANSDCTAB);       //TRANSDCTAB

    return vc1Res;
}

VC1Status DecodeFieldHeaderParams_InterlaceFieldPpicture_Adv (VC1Context* pContext)
{
    VC1Status vc1Res = VC1_OK;
    VC1PictureLayerHeader* picLayerHeader = pContext->m_picLayerHeader;
    VC1SequenceLayerHeader* seqLayerHeader = pContext->m_seqLayerHeader;

    Ipp32u tempValue;
    Ipp32u LUMSCALE;
    Ipp32u LUMSHIFT;

#ifdef VC1_DEBUG_ON
    VM_Debug::GetInstance(VC1DebugRoutine).vm_debug_frame(-1,VC1_BFRAMES,
                                            VM_STRING("P frame type  \n"));
#endif

    if (!picLayerHeader->is_slice)
    {
        if (!pContext->m_picLayerHeader->CurrField)
            memset(pContext->savedMV,0X7F,sizeof(Ipp16s)*seqLayerHeader->heightMB*seqLayerHeader->widthMB*4*2);
        else
            memset(pContext->savedMV + seqLayerHeader->heightMB*seqLayerHeader->widthMB*4*2,0X7F,
                                sizeof(Ipp16s)*seqLayerHeader->heightMB*seqLayerHeader->widthMB*4*2);
    }


    VC1_GET_BITS(5,picLayerHeader->PQINDEX);
    CalculatePQuant(pContext);

    ChooseTTMB_TTBLK_SBP(pContext);

    if(picLayerHeader->PQINDEX<=8)
    {
        VC1_GET_BITS(1,picLayerHeader->HALFQP);
    }
    else
        picLayerHeader->HALFQP = 0;


    if(seqLayerHeader->QUANTIZER == 1)
    {
        VC1_GET_BITS(1,picLayerHeader->PQUANTIZER);    //PQUANTIZER
    }

    if(seqLayerHeader->POSTPROCFLAG)
    {
         //post processing
          VC1_GET_BITS(2,tempValue);        //POSTPROC
    }

    //NUMREF
    VC1_GET_BITS(1,picLayerHeader->NUMREF);

    if(!picLayerHeader->NUMREF)
    {
        VC1_GET_BITS(1,picLayerHeader->REFFIELD);
    }

    //extended MV range flag
    MVRangeDecode(pContext);

    //for scaling mv predictors
    ChoosePredScaleValuePPictbl(picLayerHeader);

    //extended differential MV Range Flag
    DMVRangeDecode(pContext);

    picLayerHeader->INTCOMFIELD = 0;

    //motion vector mode
    if(picLayerHeader->PQUANT > 12)
    {
        //MVMODE VLC    Mode
        //1             1 MV Half-pel bilinear
        //01            1 MV
        //001           1 MV Half-pel
        //0000          Mixed MV
        //0001          Intensity Compensation
        Ipp32s bit_count = 1;
        VC1_GET_BITS(1, picLayerHeader->MVMODE);
        while((picLayerHeader->MVMODE == 0) && (bit_count < 4))
        {
            VC1_GET_BITS(1, picLayerHeader->MVMODE);
            bit_count++;
        }
        if (bit_count < 4)
            picLayerHeader->MVMODE = VC1_LUT_SET(bit_count,bc_lut_1);
        else
            if(picLayerHeader->MVMODE == 0)
                picLayerHeader->MVMODE = VC1_MVMODE_MIXED_MV;
            else
            {
                pContext->m_bIntensityCompensation = 1;
                picLayerHeader->MVMODE = VC1_MVMODE_INTENSCOMP;

                {
                    Ipp32u is_bottom = 0;
                    Ipp32u is_top    = 0;
                    Ipp32s index_bottom = pContext->m_frmBuff.m_iPrevIndex;
                    Ipp32s index_top    = pContext->m_frmBuff.m_iPrevIndex;
                    //pContext->m_bIntensityCompensation = 0;

                    //MVMODE VLC    Mode
                    //1             1 MV Half-pel bilinear
                    //01            1 MV
                    //001           1 MV Half-pel
                    //000           Mixed MV
                    Ipp32s bit_count = 1;
                    VC1_GET_BITS(1, picLayerHeader->MVMODE);
                    while((picLayerHeader->MVMODE == 0) && (bit_count < 3))
                    {
                        VC1_GET_BITS(1, picLayerHeader->MVMODE);
                        bit_count++;
                    }
                    if (bit_count < 3)
                        picLayerHeader->MVMODE = VC1_LUT_SET(bit_count,bc_lut_5);
                    else
                        if(picLayerHeader->MVMODE == 0)
                            picLayerHeader->MVMODE = VC1_MVMODE_MIXED_MV;
                        else
                            picLayerHeader->MVMODE = VC1_MVMODE_HPEL_1MV;

                    if (picLayerHeader->CurrField)
                    {
                        pContext->m_bNeedToUseCompBuffer = 1;
                        if (picLayerHeader->BottomField)
                            index_top = pContext->m_frmBuff.m_iCurrIndex;
                        else
                            index_bottom = pContext->m_frmBuff.m_iCurrIndex;
                    }

                    //INTCOMPFIELD
                    VC1_GET_BITS(1, picLayerHeader->INTCOMFIELD);
                    if(picLayerHeader->INTCOMFIELD == 1)
                    {
                        //1
                        picLayerHeader->INTCOMFIELD = VC1_INTCOMP_BOTH_FIELD;
                    }
                    else
                    {
                        VC1_GET_BITS(1, picLayerHeader->INTCOMFIELD);
                        if(picLayerHeader->INTCOMFIELD == 1)
                        {
                            //01
                            picLayerHeader->INTCOMFIELD = VC1_INTCOMP_BOTTOM_FIELD;
                        }
                        else
                        {
                            //00
                            picLayerHeader->INTCOMFIELD = VC1_INTCOMP_TOP_FIELD;
                        }
                    }

                    if(VC1_IS_INT_TOP_FIELD(picLayerHeader->INTCOMFIELD))
                    {
                        is_top    = 1;
                        //top
                        //Luma scale
                        VC1_GET_BITS(6, LUMSCALE);
                        //Luma shift
                        VC1_GET_BITS(6, LUMSHIFT);
                        STATISTICS_START_TIME(m_timeStatistics->intensity_StartTime);
                        FillTablesForIntensityCompensation_Adv(pContext, LUMSCALE,LUMSHIFT,
                            0,index_top);

                        STATISTICS_END_TIME(m_timeStatistics->intensity_StartTime,
                                    m_timeStatistics->intensity_EndTime,
                                    m_timeStatistics->intensity_TotalTime);
                    }

                    if(VC1_IS_INT_BOTTOM_FIELD(picLayerHeader->INTCOMFIELD) )