mp4decvopb.c

audio-video-codecs.rar语音编解码器

                            // frame direct mode
                            if (mp4_DecodeMV_Direct(pInfo, pMBinfo->mv, mvForw, mvBack, TRB, TRD, modb, pMBinfo->type) != MP4_STATUS_OK)
                                goto Err_1;
                            if (quarter_sample) {
                                mp4_ComputeChroma4MVQ(mvForw, &mvCbCrF);
                                mp4_Limit4MVQ(mvForw, mvForw, &limitRectL, dx, dy, 8);
                                mp4_ComputeChroma4MVQ(mvBack, &mvCbCrB);
                                mp4_Limit4MVQ(mvBack, mvBack, &limitRectL, dx, dy, 8);
                                pc = pYc;
                                pr = pYp;
                                pn = pYn;
                                mp4_Copy8x8QP_8u(pr, stepYp, pc, stepYc, &mvForw[0], 0);
                                mp4_Copy8x8QP_8u(pn, stepYn, tmpMB, 16, &mvBack[0], 0);
                                mp4_Copy8x8QP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[1], 0);
                                mp4_Copy8x8QP_8u(pn+8, stepYn, tmpMB+8, 16, &mvBack[1], 0);
                                pc = pYc + stepYc * 8;
                                pr = pYp + stepYp * 8;
                                pn = pYn + stepYn * 8;
                                mp4_Copy8x8QP_8u(pr, stepYp, pc, stepYc, &mvForw[2], 0);
                                mp4_Copy8x8QP_8u(pn, stepYn, tmpMB+128, 16, &mvBack[2], 0);
                                mp4_Copy8x8QP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[3], 0);
                                mp4_Copy8x8QP_8u(pn+8, stepYn, tmpMB+136, 16, &mvBack[3], 0);
                            } else {
                                mp4_ComputeChroma4MV(mvForw, &mvCbCrF);
                                mp4_Limit4MV(mvForw, mvForw, &limitRectL, dx, dy, 8);
                                mp4_ComputeChroma4MV(mvBack, &mvCbCrB);
                                mp4_Limit4MV(mvBack, mvBack, &limitRectL, dx, dy, 8);
                                pc = pYc;
                                pr = pYp;
                                pn = pYn;
                                mp4_Copy8x8HP_8u(pr, stepYp, pc, stepYc, &mvForw[0], 0);
                                mp4_Copy8x8HP_8u(pn, stepYn, tmpMB, 16, &mvBack[0], 0);
                                mp4_Copy8x8HP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[1], 0);
                                mp4_Copy8x8HP_8u(pn+8, stepYn, tmpMB+8, 16, &mvBack[1], 0);
                                pc = pYc + stepYc * 8;
                                pr = pYp + stepYp * 8;
                                pn = pYn + stepYn * 8;
                                mp4_Copy8x8HP_8u(pr, stepYp, pc, stepYc, &mvForw[2], 0);
                                mp4_Copy8x8HP_8u(pn, stepYn, tmpMB+128, 16, &mvBack[2], 0);
                                mp4_Copy8x8HP_8u(pr+8, stepYp, pc+8, stepYc, &mvForw[3], 0);
                                mp4_Copy8x8HP_8u(pn+8, stepYn, tmpMB+136, 16, &mvBack[3], 0);
                            }
                            mp4_LimitMV(&mvCbCrF, &mvCbCrF, &limitRectC, dx >> 1, dy >> 1, 8);
                            mp4_LimitMV(&mvCbCrB, &mvCbCrB, &limitRectC, dx >> 1, dy >> 1, 8);
                        } else {
                            mb_ftfr = (pMBinfo->field_info >> 1) & 1;
                            mb_fbfr = (pMBinfo->field_info >> 2) & 1;
                            if (mp4_DecodeMV_DirectField(pInfo, mb_ftfr, mb_fbfr, &mvField[0], &mvField[1], &mvForw[0], &mvForw[2], &mvBack[0], &mvBack[2], TRB, TRD, modb) != MP4_STATUS_OK)
                                goto Err_1;
                            if (quarter_sample) {
                                mp4_LimitFMVQ(&mvForw[0], &mvForw[0], &limitRectL, dx, dy, 16);
                                mp4_LimitFMVQ(&mvForw[2], &mvForw[2], &limitRectL, dx, dy, 16);
                                mp4_LimitFMVQ(&mvBack[0], &mvBack[0], &limitRectL, dx, dy, 16);
                                mp4_LimitFMVQ(&mvBack[2], &mvBack[2], &limitRectL, dx, dy, 16);
                                mp4_Copy16x8QP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
                                mp4_Copy16x8QP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
                                mp4_Copy16x8QP_8u(pYn/*+stepYn*mb_btfr*/, stepYn*2, tmpMB, 32, &mvBack[0], 0);
                                mp4_Copy16x8QP_8u(pYn+stepYn/**mb_bbfr*/, stepYn*2, tmpMB+16, 32, &mvBack[2], 0);
                                mvForw[0].dx = (Ipp16s)mp4_Div2(mvForw[0].dx);
                                mvForw[0].dy = (Ipp16s)(mp4_Div2(mvForw[0].dy*2) >> 1);
                                mvForw[2].dx = (Ipp16s)mp4_Div2(mvForw[2].dx);
                                mvForw[2].dy = (Ipp16s)(mp4_Div2(mvForw[2].dy*2) >> 1);
                                mvBack[0].dx = (Ipp16s)mp4_Div2(mvBack[0].dx);
                                mvBack[0].dy = (Ipp16s)(mp4_Div2(mvBack[0].dy*2) >> 1);
                                mvBack[2].dx = (Ipp16s)mp4_Div2(mvBack[2].dx);
                                mvBack[2].dy = (Ipp16s)(mp4_Div2(mvBack[2].dy*2) >> 1);
                            } else {
                                mp4_LimitFMV(&mvForw[0], &mvForw[0], &limitRectL, dx, dy, 16);
                                mp4_LimitFMV(&mvForw[2], &mvForw[2], &limitRectL, dx, dy, 16);
                                mp4_LimitFMV(&mvBack[0], &mvBack[0], &limitRectL, dx, dy, 16);
                                mp4_LimitFMV(&mvBack[2], &mvBack[2], &limitRectL, dx, dy, 16);
                                mp4_Copy16x8HP_8u(pYp+(mb_ftfr ? stepYp : 0), stepYp*2, pYc, stepYc*2, &mvForw[0], 0);
                                mp4_Copy16x8HP_8u(pYp+(mb_fbfr ? stepYp : 0), stepYp*2, pYc+stepYc, stepYc*2, &mvForw[2], 0);
                                mp4_Copy16x8HP_8u(pYn/*+stepYn*mb_btfr*/, stepYn*2, tmpMB, 32, &mvBack[0], 0);
                                mp4_Copy16x8HP_8u(pYn+stepYn/**mb_bbfr*/, stepYn*2, tmpMB+16, 32, &mvBack[2], 0);
                            }
                            mp4_ComputeChromaMV(&mvForw[0], &mvCbCrFFT);
                            mp4_ComputeChromaMV(&mvForw[2], &mvCbCrFFB);
                            mp4_ComputeChromaMV(&mvBack[0], &mvCbCrBFT);
                            mp4_ComputeChromaMV(&mvBack[2], &mvCbCrBFB);
                        }
                        ippiAverage16x16_8u_C1IR(tmpMB, 16, pYc, stepYc);
                        if (mp4_DecodeInterMB(pInfo, coeffMB, quant, cbpb, scan) != MP4_STATUS_OK)
                            goto Err_1;
                        if (!dct_type) {
                            mp4_AddResidual(cbpb & 32, pYc, stepYc, coeffMB);
                            mp4_AddResidual(cbpb & 16, pYc+8, stepYc, coeffMB+64);
                            mp4_AddResidual(cbpb & 8, pYc+stepYc*8, stepYc, coeffMB+128);
                            mp4_AddResidual(cbpb & 4, pYc+stepYc*8+8, stepYc, coeffMB+192);
                        } else {
                            mp4_AddResidual(cbpb & 32, pYc, stepYc*2, coeffMB);
                            mp4_AddResidual(cbpb & 16, pYc+8, stepYc*2, coeffMB+64);
                            mp4_AddResidual(cbpb & 8, pYc+stepYc, stepYc*2, coeffMB+128);
                            mp4_AddResidual(cbpb & 4, pYc+stepYc+8, stepYc*2, coeffMB+192);
                        }
                        if (!field_prediction) {
                            mp4_Copy8x8HP_8u(pCbp, stepCbp, pCbc, stepCbc, &mvCbCrF, 0);
                            mp4_Copy8x8HP_8u(pCrp, stepCrp, pCrc, stepCrc, &mvCbCrF, 0);
                            mp4_Copy8x8HP_8u(pCbn, stepCbn, tmpMB, 8, &mvCbCrB, 0);
                            mp4_Copy8x8HP_8u(pCrn, stepCrn, tmpMB+64, 8, &mvCbCrB, 0);
                        } else {
                            mp4_Copy8x4HP_8u(pCbp+(mb_ftfr ? stepCbp : 0), stepCbp*2, pCbc, stepCbc*2, &mvCbCrFFT, 0);
                            mp4_Copy8x4HP_8u(pCrp+(mb_ftfr ? stepCrp : 0), stepCrp*2, pCrc, stepCrc*2, &mvCbCrFFT, 0);
                            mp4_Copy8x4HP_8u(pCbp+(mb_fbfr ? stepCbp : 0), stepCbp*2, pCbc+stepCbc, stepCbc*2, &mvCbCrFFB, 0);
                            mp4_Copy8x4HP_8u(pCrp+(mb_fbfr ? stepCrp : 0), stepCrp*2, pCrc+stepCrc, stepCrc*2, &mvCbCrFFB, 0);
                            mp4_Copy8x4HP_8u(pCbn/*+(mb_btfr ? stepCbn : 0)*/, stepCbn*2, tmpMB, 16, &mvCbCrBFT, 0);
                            mp4_Copy8x4HP_8u(pCrn/*+(mb_btfr ? stepCrn : 0)*/, stepCrn*2, tmpMB+64, 16, &mvCbCrBFT, 0);
                            mp4_Copy8x4HP_8u(pCbn+/*(mb_bbfr ? */stepCbn/* : 0)*/, stepCbn*2, tmpMB+8, 16, &mvCbCrBFB, 0);
                            mp4_Copy8x4HP_8u(pCrn+/*(mb_bbfr ? */stepCrn/* : 0)*/, stepCrn*2, tmpMB+64+8, 16, &mvCbCrBFB, 0);
                        }
                        ippiAverage8x8_8u_C1IR(tmpMB, 8, pCbc, stepCbc);
                        ippiAverage8x8_8u_C1IR(tmpMB+64, 8, pCrc, stepCrc);
                        mp4_AddResidual(cbpb & 2, pCbc, stepCbc, coeffMB+256);
                        mp4_AddResidual(cbpb & 1, pCrc, stepCrc, coeffMB+320);
                    }
                }
                //mbCurr ++;
                mbInVideoPacket ++;
                colNum ++;
                pMBinfo ++;
                mvField += 2;
                if (colNum == mbPerRow) {
                    colNum = 0;
                    rowNum ++;
                    if (rowNum == mbPerCol)
                        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;
                    pYp += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYp << 4) - stepYp;
                    pCbp += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbp << 3) - stepCbp;
                    pCrp += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrp << 3) - stepCrp;
                    pYn += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYn << 4) - stepYn;
                    pCbn += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbn << 3) - stepCbn;
                    pCrn += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrn << 3) - stepCrn;
                    // reset MV predictors at new row
                    mvForwT.dx = mvForwT.dy = mvBackT.dx = mvBackT.dy = mvForwB.dx = mvForwB.dy = mvBackB.dx = mvBackB.dy = 0;
                } else {
                    pYc += 16; pCrc += 8; pCbc += 8;
                    pYp += 16; pCrp += 8; pCbp += 8;
                    pYn += 16; pCrn += 8; pCbn += 8;
                }
                if (!pInfo->VisualObject.VideoObject.resync_marker_disable) {
                    Ipp32s  found;
ErrRet_1:
                    if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK) {
                        if (found) {
                            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;
                            pYp = pInfo->VisualObject.rFrame.pY + (rowNum * stepYp + colNum) * 16; pCbp = pInfo->VisualObject.rFrame.pCb + (rowNum * stepCbp + colNum) * 8; pCrp = pInfo->VisualObject.rFrame.pCr + (rowNum * stepCrp + colNum) * 8;
                            pYn = pInfo->VisualObject.nFrame.pY + (rowNum * stepYn + colNum) * 16; pCbn = pInfo->VisualObject.nFrame.pCb + (rowNum * stepCbn + colNum) * 8; pCrn = pInfo->VisualObject.nFrame.pCr + (rowNum * stepCrn + colNum) * 8;
                            pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
                            break;
                        }
                    } else
                        goto Err_1;
                }
            }
        }
Err_1:
        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_1;
    }
// decode usual B-VOP
    for (;;) {
        IppMotionVector mvCbCrF, mvCbCrB, mvForw, mvBack, mvForwLim, mvBackLim;

        mbInVideoPacket = 0;
        // reset MV predictors at new VideoPacket
        mvForw.dx = mvForw.dy = mvBack.dx = mvBack.dy = 0;
        // decode B-VOP macroblocks
        for (;;) {
            if (pMBinfo->not_coded) {
                ippiCopy16x16_8u_C1R(pYp, stepYp, pYc, stepYc);
                ippiCopy8x8_8u_C1R(pCbp, stepCbp, pCbc, stepCbc);
                ippiCopy8x8_8u_C1R(pCrp, stepCrp, pCrc, stepCrc);
                mp4_StatisticInc_(&pInfo->VisualObject.Statistic.nMB_NOTCODED);
            } else {
                cbpb = 0;
                if (mp4_GetBit(pInfo)) {
                    modb = 2;
                    mb_type = IPPVC_MBTYPE_DIRECT;
                } else {
                    modb = mp4_GetBit(pInfo);