📄 mp4decvops.c
字号:
mp4_ComputeChromaMVQ(mvCur, &mvCbCr);
} else {
mp4_LimitMV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(mvCur, &mvCbCr);
}
mvCur[1] = mvCur[2] = mvCur[3] = mvCur[0];
} else {
if (mp4_PredictDecode4MV(pInfo, pMBinfo, rowNum, colNum) != MP4_STATUS_OK)
goto Err_3;
if (quarter_sample) {
mp4_Limit4MVQ(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MVQ(pMBinfo->mv, &mvCbCr);
} else {
mp4_Limit4MV(pMBinfo->mv, mvCur, &limitRectL, dx, dy, 8);
mp4_ComputeChroma4MV(pMBinfo->mv, &mvCbCr);
}
mp4_LimitMV(&mvCbCr, &mvCbCr, &limitRectC, dx >> 1, dy >> 1, 8);
}
} else {
IppMotionVector mvFT, mvFB;
if (mp4_PredictDecodeFMV(pInfo, pMBinfo, rowNum, colNum, &mvFT, &mvFB) != MP4_STATUS_OK)
goto Err_3;
mvField[0] = mvFT; mvField[1] = mvFB;
if (quarter_sample) {
mp4_LimitFMVQ(&mvFT, &mvCur[0], &limitRectL, dx, dy, 16);
mp4_LimitFMVQ(&mvFB, &mvCur[2], &limitRectL, dx, dy, 16);
mvTmp[0].dx = (Ipp16s)mp4_Div2(mvCur[0].dx);
mvTmp[0].dy = (Ipp16s)(mp4_Div2(mvCur[0].dy << 1) >> 1);
mvTmp[2].dx = (Ipp16s)mp4_Div2(mvCur[2].dx);
mvTmp[2].dy = (Ipp16s)(mp4_Div2(mvCur[2].dy << 1) >> 1);
mp4_ComputeChromaMV(&mvTmp[0], &mvCbCrT);
mp4_ComputeChromaMV(&mvTmp[2], &mvCbCrB);
} else {
mp4_LimitFMV(&mvFT, &mvCur[0], &limitRectL, dx, dy, 16);
mp4_LimitFMV(&mvFB, &mvCur[2], &limitRectL, dx, dy, 16);
mp4_ComputeChromaMV(&mvCur[0], &mvCbCrT);
mp4_ComputeChromaMV(&mvCur[2], &mvCbCrB);
}
}
} else {
ippiCalcGlobalMV_MPEG4(dx, dy, pMBinfo->mv, pInfo->VisualObject.VideoObject.WarpSpec);
pMBinfo->mv[1] = pMBinfo->mv[2] = pMBinfo->mv[3] = pMBinfo->mv[0];
}
}
if (!obmc_disable) {
// OBMC for previous MB
if (colNum > 0)
if (pMBinfo[-1].type < IPPVC_MBTYPE_INTRA && !(pMBinfo[-1].field_info & 1)) // previous is marked as INTRA if it was mcsel
mp4_OBMC(pInfo, pMBinfo - 1, mvPrev, colNum - 1, rowNum, limitRectL, pYc - 16, stepYc, pYr - 16, stepYr, cbpyPrev, coeffMB, dct_typePrev);
if (mb_type < IPPVC_MBTYPE_INTRA && !field_prediction && !mcsel) {
cbpyPrev = cbpy;
dct_typePrev = dct_type;
mvPrev[0] = mvCur[0]; mvPrev[1] = mvCur[1]; mvPrev[2] = mvCur[2]; mvPrev[3] = mvCur[3];
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, (cbpy << 2) + cbpc, scan) != MP4_STATUS_OK)
goto Err_3;
mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
// OBMC current MB if it is the last in the row
if (colNum == mbPerRow - 1)
mp4_OBMC(pInfo, pMBinfo, mvPrev, colNum, rowNum, limitRectL, pYc, stepYc, pYr, stepYr, cbpyPrev, coeffMB, dct_typePrev);
}
}
if (mb_type < IPPVC_MBTYPE_INTRA && (obmc_disable || field_prediction || mcsel)) {
pat = mb_not_coded ? 0 : ((cbpy << 2) + cbpc);
if (pat)
if (mp4_DecodeInterMB(pInfo, coeffMB, quant, pat, scan) != MP4_STATUS_OK)
goto Err_3;
if (!mcsel) {
if (quarter_sample) {
if (!field_prediction) {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
mp4_Copy8x8QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
mp4_Copy8x8QP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
mp4_Copy8x8QP_8u(pYr+stepYr*8, stepYr, pYc+stepYc*8, stepYc, &mvCur[2], rt);
mp4_Copy8x8QP_8u(pYr+8+stepYr*8, stepYr, pYc+8+stepYc*8, stepYc, &mvCur[3], rt);
} else {
mp4_Copy16x16QP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
}
} else {
mp4_Copy16x8QP_8u(pYr+stepYr*mb_ftfr, stepYr*2, pYc, stepYc*2, &mvCur[0], rt);
mp4_Copy16x8QP_8u(pYr+stepYr*mb_fbfr, stepYr*2, pYc+stepYc, stepYc*2, &mvCur[2], rt);
}
} else {
if (!field_prediction) {
if (mb_type == IPPVC_MBTYPE_INTER4V) {
mp4_Copy8x8HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
mp4_Copy8x8HP_8u(pYr+8, stepYr, pYc+8, stepYc, &mvCur[1], rt);
mp4_Copy8x8HP_8u(pYr+stepYr*8, stepYr, pYc+stepYc*8, stepYc, &mvCur[2], rt);
mp4_Copy8x8HP_8u(pYr+8+stepYr*8, stepYr, pYc+8+stepYc*8, stepYc, &mvCur[3], rt);
} else {
mp4_Copy16x16HP_8u(pYr, stepYr, pYc, stepYc, &mvCur[0], rt);
}
} else {
mp4_Copy16x8HP_8u(pYr+stepYr*mb_ftfr, stepYr*2, pYc, stepYc*2, &mvCur[0], rt);
mp4_Copy16x8HP_8u(pYr+stepYr*mb_fbfr, stepYr*2, pYc+stepYc, stepYc*2, &mvCur[2], rt);
}
}
if (!dct_type) {
mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpy & 8, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
if (!field_prediction) {
mp4_MC_HP(cbpc & 2, pCbr, stepCbr, pCbc, stepCbc, coeffMB+256, &mvCbCr, rt);
mp4_MC_HP(cbpc & 1, pCrr, stepCrr, pCrc, stepCrc, coeffMB+320, &mvCbCr, rt);
} else {
mp4_Copy8x4HP_8u(pCbr+(mb_ftfr ? stepCbr : 0), stepCbr*2, pCbc, stepCbc*2, &mvCbCrT, rt);
mp4_Copy8x4HP_8u(pCrr+(mb_ftfr ? stepCrr : 0), stepCrr*2, pCrc, stepCrc*2, &mvCbCrT, rt);
mp4_Copy8x4HP_8u(pCbr+(mb_fbfr ? stepCbr : 0), stepCbr*2, pCbc+stepCbc, stepCbc*2, &mvCbCrB, rt);
mp4_Copy8x4HP_8u(pCrr+(mb_fbfr ? stepCrr : 0), stepCrr*2, pCrc+stepCrc, stepCrc*2, &mvCbCrB, rt);
mp4_AddResidual(cbpc & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpc & 1, pCrc, stepCrc, coeffMB+320);
}
} else {
IppiRect mbRect;
mbRect.x = dx; mbRect.y = dy; mbRect.width = mbRect.height = 16;
ippiWarpLuma_MPEG4_8u_C1R(pInfo->VisualObject.rFrame.pY, stepYr, pYc, stepYc, &mbRect, pInfo->VisualObject.VideoObject.WarpSpec);
mbRect.x >>= 1; mbRect.y >>= 1; mbRect.width = mbRect.height = 8;
ippiWarpChroma_MPEG4_8u_P2R(pInfo->VisualObject.rFrame.pCb, stepCbr, pInfo->VisualObject.rFrame.pCr, stepCrr, pCbc, stepCbc, pCrc, stepCrc, &mbRect, pInfo->VisualObject.VideoObject.WarpSpec);
if (pat) {
if (!dct_type) {
mp4_AddResidual(cbpy & 8, pYc, stepYc, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc*8, stepYc, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc*8+8, stepYc, coeffMB+192);
} else {
mp4_AddResidual(cbpy & 8, pYc, stepYc*2, coeffMB);
mp4_AddResidual(cbpy & 4, pYc+8, stepYc*2, coeffMB+64);
mp4_AddResidual(cbpy & 2, pYc+stepYc, stepYc*2, coeffMB+128);
mp4_AddResidual(cbpy & 1, pYc+stepYc+8, stepYc*2, coeffMB+192);
}
mp4_AddResidual(cbpc & 2, pCbc, stepCbc, coeffMB+256);
mp4_AddResidual(cbpc & 1, pCrc, stepCrc, coeffMB+320);
}
}
}
pMBinfo ++;
mvField += 2;
mbInVideoPacket ++;
colNum ++;
if (colNum == mbPerRow) {
colNum = 0;
rowNum ++;
if (rowNum == mbPerCol) {
// skip stuffing
while (mp4_ShowBits(pInfo, 10) == 1)
mp4_FlushBits(pInfo, 10);
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;
pYr += (2 * MP4_NUM_EXT_MB + 1) * 16 + (stepYr << 4) - stepYr;
pCbr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCbr << 3) - stepCbr;
pCrr += (2 * MP4_NUM_EXT_MB + 1) * 8 + (stepCrr << 3) - stepCrr;
} else {
pYc += 16; pCrc += 8; pCbc += 8;
pYr += 16; pCrr += 8; pCbr += 8;
}
}
if (!pInfo->VisualObject.VideoObject.resync_marker_disable) {
Ipp32s found;
ErrRet_3:
if (mp4_CheckDecodeVideoPacket(pInfo, &found) == MP4_STATUS_OK) {
if (found) {
mbInVideoPacket = pInfo->VisualObject.VideoObject.VideoObjectPlane.macroblock_num - mbCurr;
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;
pYr = pInfo->VisualObject.rFrame.pY + (rowNum * stepYr + colNum) * 16; pCbr = pInfo->VisualObject.rFrame.pCb + (rowNum * stepCbr + colNum) * 8; pCrr = pInfo->VisualObject.rFrame.pCr + (rowNum * stepCrr + colNum) * 8;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + mbCurr;
mvField = pInfo->VisualObject.VideoObject.FieldMV + 2 * mbCurr;
break;
}
} else
goto Err_3;
}
}
// mark MBs the previous videopacket as invalid for prediction
for (i = 1; i <= IPP_MIN(mbInVideoPacket, mbPerRow + 1); i ++) {
pMBinfo[-i].validPred = 0;
}
}
Err_3:
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_3;
}
}
#ifdef _OMP_KARABAS
static mp4_Status mp4_DecodeVOP_S_DecodeSlice(mp4_Info* pInfo, Ipp32s curRow, mp4_MacroBlockMT* pMBinfoMT)
{
Ipp32s mb_not_coded, mb_type, cbpc, cbpy, quant, quantPred, ac_pred_flag, dcVLC;
Ipp32s i, j, mbPerRow, scan, pat;
mp4_MacroBlock *pMBinfo;
Ipp32s mcsel, interlaced, field_prediction, dct_type, mb_ftfr, mb_fbfr;
IppMotionVector *pMVField;
mbPerRow = pInfo->VisualObject.VideoObject.MacroBlockPerRow;
pMBinfo = pInfo->VisualObject.VideoObject.MBinfo + curRow * mbPerRow;
// warning "variable may be used without having been initialized"
cbpc = mb_type = ac_pred_flag = 0;
quant = quantPred = pInfo->VisualObject.VideoObject.VideoObjectPlane.quant;
⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -