protected Nalu(RBSP rbsp, NaluType nalUnitType, NalRefIdc nalRefIdc)
{
startcodeprefixLen = useAnnexbLongStartcode ? 4 : 3;
this.nalUnitType = nalUnitType;
this.nalRefIdc = nalRefIdc;
forbiddenZeroBit = 0;
this.rbsp = rbsp;
useAnnexbLongStartcode = true;
}
public static byte GetNaluTypeByte(NaluType Type)
{
var NaluTypeByte = 0;
var nal_ref_idc = 3;
NaluTypeByte |= nal_ref_idc << 5;
NaluTypeByte |= (int)Type;
return((byte)NaluTypeByte);
}
public static byte[] RawToAnnexb4(byte[] Packet, NaluType Type)
{
var AnnexPacket = new byte[Packet.Length + 5];
Array.Copy(Packet, 0, AnnexPacket, 5, Packet.Length);
AnnexPacket[0] = 0;
AnnexPacket[1] = 0;
AnnexPacket[2] = 0;
AnnexPacket[3] = 1;
AnnexPacket[4] = GetNaluTypeByte(Type);
return(AnnexPacket);
}
public SliceHeader(Slice slice, Nalu nalu, SequenceParameterSet sps, PictureParameterSet pps)
{
this.slice = slice;
// BEGIN: parameters from Nalu, Picture Par Set and Sequence Par Set
picParameterSetId = pps.PicParameterSetId;
log2MaxFrameNumMinus4 = sps.Log2MaxFrameNumMinus4;
frameMbsOnlyFlag = sps.FrameMbsOnlyFlag;
picOrderCntType = sps.PicOrderCntType;
log2MaxPicOrderCntLsbMinus4 = sps.Log2MaxPicOrderCntLsbMinus4;
picInitQpMinus26 = pps.PicInitQpMinus26;
nalRefIdc = nalu.NalRefIdc;
nalUnitType = nalu.NalUnitType;
// END: parameters from Nalu, Picture Par Set and Sequence Par Set
sliceType = slice.Picture.TypeOfSlice;
firstMbInSlice = slice.Picture.CurrentMbNr;
noOutputOfPriorPicsFlag = false;
longTermReferenceFlag = false;
sliceQpDelta = (slice.Qp - 26 - picInitQpMinus26);
}
public NaluByteStream(RBSP rbsp,NaluType nalUnitType,NalRefIdc nalReferenceIdc)
: base(rbsp, nalUnitType, nalReferenceIdc)
{
}