umc_h264_deblocking_mbaff.cpp

audio-video-codecs.rar语音编解码器

                VM_ASSERT(-1 == m_pCurrentFrame->m_mbinfo.RefIdxs[1][MBAddr].RefIdxs[nNeighbourBlock]);

                {
                    H264EncoderFrame<PixType> **pRefPicList;
                    Ipp32s index;

                    pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + MBAddr)->slice_id, 0)->m_RefPicList;

                    // select reference index for current block
                    index = m_pCurrentFrame->m_mbinfo.RefIdxs[0][MBAddr].RefIdxs[nBlock];
                    iRefQ = (index < 0) ?
                            (-1) :
                            (pRefPicList[index >> 1]->DeblockPicID(index & 1));

                    // select reference index for previous block
                    index = m_pCurrentFrame->m_mbinfo.RefIdxs[0][MBAddr].RefIdxs[nNeighbourBlock];
                    iRefP = (index < 0) ?
                            (-1) :
                            pRefPicList[index >> 1]->DeblockPicID(index & 1);
                }

                VM_ASSERT((iRefP != -1) || (iRefQ != -1));

                // when reference indexes are equal
                if (iRefQ == iRefP)
                {
                    H264MotionVector *pVectorQ, *pVectorP;

                    pVectorQ = m_pCurrentFrame->m_mbinfo.MV[0][MBAddr].MotionVectors + nBlock;
                    pVectorP = m_pCurrentFrame->m_mbinfo.MV[0][MBAddr].MotionVectors + nNeighbourBlock;

                    // compare motion vectors
                    if ((4 <= abs(pVectorQ->mvx - pVectorP->mvx)) ||
                        (2 <= abs(pVectorQ->mvy - pVectorP->mvy)))
                    {
                        pStrength[idx] = 1;
                        *pDeblockingFlag = 1;
                    }
                    else
                        pStrength[idx] = 0;
                }
                // when reference indexes are different
                else
                {
                    pStrength[idx] = 1;
                    *pDeblockingFlag = 1;
                }
            }
        }
    }

} // void H264CoreEncoder::PrepareDeblockingParametersPSlice4MBAFFField(Ipp32u dir, DeblockingParameters<PixType> *pParams)

template <class PixType, class CoeffsType>
void H264CoreEncoder<PixType,CoeffsType>::PrepareDeblockingParametersBSlice4MBAFFField(Ipp32u dir,
                                                                                       DeblockingParameters<PixType> *pParams)
{
    Ipp32u MBAddr = pParams->nMBAddr;
    Ipp32u cbp_luma = (m_mbinfo.mbs + MBAddr)->cbp_luma;
    Ipp8u *pStrength = pParams->Strength[dir];
    Ipp32u *pDeblockingFlag = &(pParams->DeblockingFlag[dir]);

    //
    // external edge
    //
    if (pParams->ExternalEdgeFlag[dir])
    {
        Ipp32u nNeighbour;

        // select neighbour addres
        nNeighbour = pParams->nNeighbour[dir];

        // when neighbour macroblock isn't intra
        if (!IS_INTRA_MBTYPE((m_pCurrentFrame->m_mbinfo.mbs + nNeighbour)->mbtype))
        {
            H264MacroblockLocalInfo *pNeighbour;
            Ipp32u idx;

            // select neighbour
            pNeighbour = m_mbinfo.mbs + nNeighbour;

            // cicle on blocks
            for (idx = 0;idx < 4;idx += 1)
            {
                Ipp32u blkQ, blkP;

                blkQ = ENCODER_EXTERNAL_BLOCK_MASK[dir][CURRENT_BLOCK][idx];
                blkP = ENCODER_EXTERNAL_BLOCK_MASK[dir][NEIGHBOUR_BLOCK][idx];

                // when one of couple of blocks has coeffs
                if ((cbp_luma & blkQ) ||
                    (pNeighbour->cbp_luma & blkP))
                {
                    pStrength[idx] = 2;
                    *pDeblockingFlag = 1;
                }
                // compare motion vectors & reference indexes
                else
                {
                    Ipp32u nBlock, nNeighbourBlock;
                    Ipp32s iRefQFrw, iRefPFrw, iRefQBck, iRefPBck;

                    // calc block and neighbour block number
                    if (VERTICAL_DEBLOCKING == dir)
                    {
                        nBlock = idx * 4;
                        nNeighbourBlock = nBlock + 3;
                    }
                    else
                    {
                        nBlock = idx;
                        nNeighbourBlock = idx + 12;
                    }

                    {
                        H264EncoderFrame<PixType> **pRefPicList;
                        Ipp32s index;

                        // select reference index for current block
                        index = m_pCurrentFrame->m_mbinfo.RefIdxs[0][MBAddr].RefIdxs[nBlock];
                        if (0 <= index)
                        {
                            pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + MBAddr)->slice_id, 0)->m_RefPicList;
                            iRefQFrw = pRefPicList[index >> 1]->DeblockPicID(index & 1);
                        }
                        else
                            iRefQFrw = -1;
                        index = m_pCurrentFrame->m_mbinfo.RefIdxs[1][MBAddr].RefIdxs[nBlock];
                        if (0 <= index)
                        {
                            pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + MBAddr)->slice_id, 1)->m_RefPicList;
                            iRefQBck = pRefPicList[index >> 1]->DeblockPicID(index & 1);
                        }
                        else
                            iRefQBck = -1;

                        // select reference index for previous block
                        index = m_pCurrentFrame->m_mbinfo.RefIdxs[0][nNeighbour].RefIdxs[nNeighbourBlock];
                        if (0 <= index)
                        {
                            pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + nNeighbour)->slice_id, 0)->m_RefPicList;
                            iRefPFrw = pRefPicList[index >> 1]->DeblockPicID(index & 1);
                        }
                        else
                            iRefPFrw = -1;
                        index = m_pCurrentFrame->m_mbinfo.RefIdxs[1][nNeighbour].RefIdxs[nNeighbourBlock];
                        if (0 <= index)
                        {
                            pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + nNeighbour)->slice_id, 1)->m_RefPicList;
                            iRefPBck = pRefPicList[index >> 1]->DeblockPicID(index & 1);
                        }
                        else
                            iRefPBck = -1;
                    }

                    // when reference indexes are equal
                    if (((iRefQFrw == iRefPFrw) && (iRefQBck == iRefPBck)) ||
                        ((iRefQFrw == iRefPBck) && (iRefQBck == iRefPFrw)))
                    {
                        // set initial value of strength
                        pStrength[idx] = 0;

                        // when forward and backward reference pictures of previous block are different
                        if (iRefPFrw != iRefPBck)
                        {
                            const H264MotionVector *pVectorQFrw, *pVectorQBck;
                            const H264MotionVector *pVectorPFrw, *pVectorPBck;

                            // select current block motion vectors
                            pVectorQFrw = (iRefQFrw < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[0][MBAddr].MotionVectors + nBlock;
                            pVectorQBck = (iRefQBck < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[1][MBAddr].MotionVectors + nBlock;

                            // select previous block motion vectors
                            if (iRefQFrw == iRefPFrw)
                            {
                                pVectorPFrw = (iRefPFrw < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[0][nNeighbour].MotionVectors + nNeighbourBlock;
                                pVectorPBck = (iRefPBck < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[1][nNeighbour].MotionVectors + nNeighbourBlock;
                            }
                            else
                            {
                                pVectorPFrw = (iRefPBck < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[1][nNeighbour].MotionVectors + nNeighbourBlock;
                                pVectorPBck = (iRefPFrw < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[0][nNeighbour].MotionVectors + nNeighbourBlock;
                            }

                            // compare motion vectors
                            if ((4 <= abs(pVectorQFrw->mvx - pVectorPFrw->mvx)) ||
                                (2 <= abs(pVectorQFrw->mvy - pVectorPFrw->mvy)) ||
                                (4 <= abs(pVectorQBck->mvx - pVectorPBck->mvx)) ||
                                (2 <= abs(pVectorQBck->mvy - pVectorPBck->mvy)))
                            {
                                pStrength[idx] = 1;
                                *pDeblockingFlag = 1;
                            }
                        }
                        // when forward and backward reference pictures of previous block are equal
                        else
                        {
                            const H264MotionVector *pVectorQFrw, *pVectorQBck;
                            const H264MotionVector *pVectorPFrw, *pVectorPBck;

                            // select current block motion vectors
                            pVectorQFrw = (iRefQFrw < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[0][MBAddr].MotionVectors + nBlock;
                            pVectorQBck = (iRefQBck < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[1][MBAddr].MotionVectors + nBlock;

                            // select previous block motion vectors
                            pVectorPFrw = (iRefPFrw < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[0][nNeighbour].MotionVectors + nNeighbourBlock;
                            pVectorPBck = (iRefPBck < 0)? &null_mv: m_pCurrentFrame->m_mbinfo.MV[1][nNeighbour].MotionVectors + nNeighbourBlock;

                            // compare motion vectors
                            if ((4 <= abs(pVectorQFrw->mvx - pVectorPFrw->mvx)) ||
                                (2 <= abs(pVectorQFrw->mvy - pVectorPFrw->mvy)) ||
                                (4 <= abs(pVectorQBck->mvx - pVectorPBck->mvx)) ||
                                (2 <= abs(pVectorQBck->mvy - pVectorPBck->mvy)))
                            {
                                if ((4 <= abs(pVectorQFrw->mvx - pVectorPBck->mvx)) ||
                                    (2 <= abs(pVectorQFrw->mvy - pVectorPBck->mvy)) ||
                                    (4 <= abs(pVectorQBck->mvx - pVectorPFrw->mvx)) ||
                                    (2 <= abs(pVectorQBck->mvy - pVectorPFrw->mvy)))
                                {
                                    pStrength[idx] = 1;
                                    *pDeblockingFlag = 1;
                                }
                            }
                        }
                    }
                    // when reference indexes are different
                    else
                    {
                        pStrength[idx] = 1;
                        *pDeblockingFlag = 1;
                    }
                }
            }
        }
        // external edge required in strong filtering
        else
        {
            if (HORIZONTAL_DEBLOCKING == dir)
                SetEdgeStrength(pStrength + 0, 3);
            else
                SetEdgeStrength(pStrength + 0, 4);
            *pDeblockingFlag = 1;
        }
    }

    //
    // internal edge(s)
    //
    {
        Ipp32u idx;

        // cicle of edge(s)
        // we do all edges in one cicle
        for (idx = 4;idx < 16;idx += 1)
        {
            Ipp32u blkQ;

            blkQ = ENCODER_INTERNAL_BLOCKS_MASK[dir][idx - 4];

            if (cbp_luma & blkQ)
            {
                pStrength[idx] = 2;
                *pDeblockingFlag = 1;
            }
            // compare motion vectors & reference indexes
            else
            {
                Ipp32u nBlock, nNeighbourBlock;
                Ipp32s iRefQFrw, iRefQBck, iRefPFrw, iRefPBck;

                // calc block and neighbour block number
                if (VERTICAL_DEBLOCKING == dir)
                {
                    nBlock = (idx & 3) * 4 + (idx >> 2);
                    nNeighbourBlock = nBlock - 1;
                }
                else
                {
                    nBlock = idx;
                    nNeighbourBlock = idx - 4;
                }

                {
                    H264EncoderFrame<PixType> **pRefPicList;
                    Ipp32s index;

                    // select forward reference pictures list
                    pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + MBAddr)->slice_id, 0)->m_RefPicList;
                    // select forward reference index for block(s)
                    index = m_pCurrentFrame->m_mbinfo.RefIdxs[0][MBAddr].RefIdxs[nBlock];
                    iRefQFrw = (index < 0) ?
                            (-1) :
                            (pRefPicList[index >> 1]->DeblockPicID(index & 1));
                    index = m_pCurrentFrame->m_mbinfo.RefIdxs[0][MBAddr].RefIdxs[nNeighbourBlock];
                    iRefPFrw = (index < 0) ?
                            (-1) :
                            pRefPicList[index >> 1]->DeblockPicID(index & 1);

                    // select backward reference pictures list
                    pRefPicList = m_pCurrentFrame->GetRefPicList((m_pCurrentFrame->m_mbinfo.mbs + MBAddr)->slice_id, 1)->m_RefPicList;
                    // select backward reference index for block(s)
                    index = m_pCurrentFrame->m_mbinfo.RefIdxs[1][MBAddr].RefIdxs[nBlock];
                    iRefQBck = (index < 0) ?
                            (-1) :
                            (pRefPicList[index >> 1]->DeblockPicID(index & 1));
                    index = m_pCurrentFrame->m_mbinfo.RefIdxs[1][MBAddr].RefIdxs[nNeighbourBlock];
                    iRefPBck = (index < 0) ?
                            (-1) :
                            pRefPicList[index >> 1]->DeblockPicID(index & 1);