umc_vc1_dec_ppic_adv.cpp

audio-video-codecs.rar语音编解码器

/* /////////////////////////////////////////////////////////////////////////////
//
//                  INTEL CORPORATION PROPRIETARY INFORMATION
//     This software is supplied under the terms of a license agreement or
//     nondisclosure agreement with Intel Corporation and may not be copied
//     or disclosed except in accordance with the terms of that agreement.
//          Copyright(c) 2004-2007 Intel Corporation. All Rights Reserved.
//
//
//          VC-1 decoder, P picture layer for advanced profile
//
*/
#include "umc_defs.h"

#if defined (UMC_ENABLE_VC1_VIDEO_DECODER)

#include "umc_vc1_dec_seq.h"
#include "umc_vc1_dec_debug.h"

#include "umc_vc1_dec_time_statistics.h"

static const Ipp32u bc_lut_1[] = {4,0,1,3};
static const Ipp32u bc_lut_2[] = {0,1,2,3};
static const Ipp32u bc_lut_4[] = {0,1,2};
static const Ipp32u bc_lut_5[] = {0,0,1};

typedef void (*ExpandIntens)(VC1Context* pContext, Frame* pFrame);

static const ExpandIntens ExpandIntens_table[] =
             {
               (ExpandIntens)(ExpandFrame_Adv),
               (ExpandIntens)(ExpandFrame_Interlace),
               (ExpandIntens)(ExpandFrame_Interlace)
             };

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

    Ipp32u LUMSCALE;
    Ipp32u LUMSHIFT;

    ChooseTTMB_TTBLK_SBP(pContext);

#ifdef VC1_DEBUG_ON
    VM_Debug::GetInstance(VC1DebugRoutine).vm_debug_frame(-1,VC1_BFRAMES,
        VM_STRING("P frame type  \n"));
#endif
    if (!pContext->m_picLayerHeader->is_slice)
        memset(pContext->savedMV,0X7F,sizeof(Ipp16s)*seqLayerHeader->heightMB*seqLayerHeader->widthMB*4*2);

    //extended MV range flag
    MVRangeDecode(pContext);

    //motion vector mode
    if(picLayerHeader->PQUANT > 12)
    {
        //VC-1 Table 45: P Picture Low rate (PQUANT > 12) MVMODE codetable
        //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;
                //VC-1 Table 48: P Picture Low rate (PQUANT > 12) MVMODE2 codetable
                //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;
                //Luma scale
                VC1_GET_BITS(6, picLayerHeader->LUMSCALE);

                //Luma shift
                VC1_GET_BITS(6, picLayerHeader->LUMSHIFT);
                STATISTICS_START_TIME(m_timeStatistics->intensity_StartTime);

                FillTablesForIntensityCompensation_Adv(pContext,
                                                       picLayerHeader->LUMSCALE,
                                                       picLayerHeader->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]);

            pContext->m_picLayerHeader->MVMODE2 = pContext->m_picLayerHeader->MVMODE;
        }
    }
    else
    {
        //VC-1 Table 46: P Picture High rate (PQUANT <= 12) MVMODE codetable
        //MVMODE VLC    Mode
        //1                1 MV
        //01            Mixed MV
        //001            1 MV Half-pel
        //0000            1 MV Half-pel bilinear
        //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_2);
        else
            if(picLayerHeader->MVMODE == 0)
                picLayerHeader->MVMODE = VC1_MVMODE_HPELBI_1MV;
            else
            {
                pContext->m_bIntensityCompensation = 1;
                picLayerHeader->MVMODE = VC1_MVMODE_INTENSCOMP;
                //VC-1 Table 49: P Picture High rate (PQUANT <= 12) MVMODE2 codetable
                //MVMODE VLC    Mode
                //1                1 MV
                //01            Mixed MV
                //001            1 MV Half-pel
                //000            1 MV Half-pel bilinear
                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_4);
                else
                    if(picLayerHeader->MVMODE == 0)
                        picLayerHeader->MVMODE = VC1_MVMODE_HPELBI_1MV;
                    else
                        picLayerHeader->MVMODE = VC1_MVMODE_HPEL_1MV;

                //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,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]);
            pContext->m_picLayerHeader->MVMODE2 = pContext->m_picLayerHeader->MVMODE;
            }
    }

    //motion vector type bitplane
    if(picLayerHeader->MVMODE == VC1_MVMODE_MIXED_MV)
    {
        DecodeBitplane(pContext, &picLayerHeader->MVTYPEMB,
                        seqLayerHeader->widthMB, seqLayerHeader->heightMB,0);
    }

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

    //motion vector table
    VC1_GET_BITS(2, picLayerHeader->MVTAB);       //MVTAB

    picLayerHeader->m_pCurrMVDifftbl =
        pContext->m_vlcTbl->MVDIFF_PB_TABLES[picLayerHeader->MVTAB];  //MVTAB


    //coded block pattern table
    VC1_GET_BITS(2, picLayerHeader->CBPTAB);       //CBPTAB

    picLayerHeader->m_pCurrCBPCYtbl = pContext->m_vlcTbl->CBPCY_PB_TABLES[picLayerHeader->CBPTAB];       //CBPTAB

    vc1Res = VOPDQuant(pContext);

    if(seqLayerHeader->VSTRANSFORM)
    {
        //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
        {
            //_MAYBE_ see reference decoder - vc1decpic.c vc1DECPIC_UnpackPictureLayerPBAdvanced function
            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++;
    }
    picLayerHeader->TRANSACFRM2 = picLayerHeader->TRANSACFRM;
    ChooseACTable(picLayerHeader, picLayerHeader->TRANSACFRM, picLayerHeader->TRANSACFRM);//TRANSACFRM

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

    return vc1Res;
}

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

    Ipp32u tempValue;
    Ipp32u LUMSCALE;
    Ipp32u LUMSHIFT;


    ChooseTTMB_TTBLK_SBP(pContext);

#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)
        memset(pContext->savedMV,0X7F,sizeof(Ipp16s)*seqLayerHeader->heightMB*seqLayerHeader->widthMB*4*2*2);

    //extended MV range flag
    MVRangeDecode(pContext);

    //extended differential MV Range Flag
    if(seqLayerHeader->EXTENDED_DMV == 1)
    {
        VC1_GET_BITS(1, picLayerHeader->DMVRANGE);
        if(picLayerHeader->DMVRANGE==0)
        {
            //binary code 0
            picLayerHeader->DMVRANGE = VC1_DMVRANGE_NONE;