public MacroBlockPrediction(byte mbtype, MacroBlockLayer mbl)
{
_mbType = mbtype;
_mbLayer = mbl;
}
public void Read(BitReader bitReader)
{
if (_pps.EntropyCodingModeFlag)
{
while (!bitReader.ByteAligned)
{
if ((CABACAlignmentOneBit = bitReader.GetNextBit()) == false)
{
throw new Exception("Invalid entropy coding start for slice data");
}
}
}
CurrMbAddr = _header.FirstMBInSlice * (1u + (_header.MBaffFrameFlag ? 1u : 0u));
moreDataFlag = true;
prevMbSkipped = false;
do
{
if ((_header.SliceType != SliceTypes.I) && (_header.SliceType != SliceTypes.SI))
{
if (!_pps.EntropyCodingModeFlag)
{
MBSkipRun = bitReader.DecodeUnsignedExpGolomb();
prevMbSkipped = (MBSkipRun > 0);
for (int i = 0; i < MBSkipRun; i++)
{
CurrMbAddr = NextMBAddress(CurrMbAddr);
}
moreDataFlag = _nalu.MoreRBSPData(bitReader);
}
else
{
mbSkipFlag = false; // FIXME: CABAC value bitReader.GetNextBit();
moreDataFlag = !mbSkipFlag;
}
}
if (moreDataFlag)
{
if (_header.MBaffFrameFlag && (CurrMbAddr % 2 == 0 || (CurrMbAddr % 2 == 1 && prevMbSkipped)))
{
mbFieldDecodingFlag = false; // FIXME: CABAC value bitReader.GetNextBit();
}
MacroBlockLayer mbLayer = new MacroBlockLayer(_sps, _pps, _header, this);
mbLayer.Read(bitReader);
}
if (!_pps.EntropyCodingModeFlag)
{
moreDataFlag = _nalu.MoreRBSPData(bitReader);
}
else
{
if (_header.SliceType != SliceTypes.I && _header.SliceType != SliceTypes.SI)
{
prevMbSkipped = mbSkipFlag;
}
if (_header.MBaffFrameFlag && CurrMbAddr % 2 == 0)
{
moreDataFlag = true;
}
else
{
endOfSliceFlag = bitReader.GetNextBit(); // FIXME: random bit bec. residual is not read
moreDataFlag = !endOfSliceFlag;
}
}
CurrMbAddr = NextMBAddress(CurrMbAddr);
} while (moreDataFlag);
}
public MacroBlockPrediction(byte mbtype, MacroBlockLayer mbl)
{
_mbType = mbtype;
_mbLayer = mbl;
}
public void Read(BitReader bitReader)
{
if (_pps.EntropyCodingModeFlag)
{
while (!bitReader.ByteAligned)
if ((CABACAlignmentOneBit = bitReader.GetNextBit()) == false)
throw new Exception("Invalid entropy coding start for slice data");
}
CurrMbAddr = _header.FirstMBInSlice * (1u + (_header.MBaffFrameFlag ? 1u : 0u));
moreDataFlag = true;
prevMbSkipped = false;
do
{
if ((_header.SliceType != SliceTypes.I) && (_header.SliceType != SliceTypes.SI))
{
if (!_pps.EntropyCodingModeFlag)
{
MBSkipRun = bitReader.DecodeUnsignedExpGolomb();
prevMbSkipped = (MBSkipRun > 0);
for (int i = 0; i < MBSkipRun; i++)
{
CurrMbAddr = NextMBAddress(CurrMbAddr);
}
moreDataFlag = _nalu.MoreRBSPData(bitReader);
}
else
{
mbSkipFlag = false; // FIXME: CABAC value bitReader.GetNextBit();
moreDataFlag = !mbSkipFlag;
}
}
if (moreDataFlag)
{
if (_header.MBaffFrameFlag && (CurrMbAddr % 2 == 0 || (CurrMbAddr % 2 == 1 && prevMbSkipped)))
{
mbFieldDecodingFlag = false; // FIXME: CABAC value bitReader.GetNextBit();
}
MacroBlockLayer mbLayer = new MacroBlockLayer(_sps, _pps, _header, this);
mbLayer.Read(bitReader);
}
if (!_pps.EntropyCodingModeFlag)
moreDataFlag = _nalu.MoreRBSPData(bitReader);
else
{
if (_header.SliceType != SliceTypes.I && _header.SliceType != SliceTypes.SI)
prevMbSkipped = mbSkipFlag;
if (_header.MBaffFrameFlag && CurrMbAddr % 2 == 0)
moreDataFlag = true;
else
{
endOfSliceFlag = bitReader.GetNextBit(); // FIXME: random bit bec. residual is not read
moreDataFlag = !endOfSliceFlag;
}
}
CurrMbAddr = NextMBAddress(CurrMbAddr);
} while (moreDataFlag);
}
