private static void WriteScalingList(H264BitStreamWriter Writer, byte[] List, int Start, int Count)
{
byte[] Scan = Count == 16 ? ZigZagScan : ZigZagDirect;
int LastScale = 8;
for (int Index = 0; Index < Count; Index++)
{
byte Value = List[Start + Scan[Index]];
int DeltaScale = Value - LastScale;
Writer.WriteSe(DeltaScale);
LastScale = Value;
}
}
private static void WriteScalingList(H264BitStreamWriter writer, byte[] list, int start, int count)
{
byte[] scan = count == 16 ? ZigZagScan : ZigZagDirect;
int lastScale = 8;
for (int index = 0; index < count; index++)
{
byte value = list[start + scan[index]];
int deltaScale = value - lastScale;
writer.WriteSe(deltaScale);
lastScale = value;
}
}
private byte[] EncodeHeader()
{
using (MemoryStream Data = new MemoryStream())
{
H264BitStreamWriter Writer = new H264BitStreamWriter(Data);
//Sequence Parameter Set.
Writer.WriteU(1, 24);
Writer.WriteU(0, 1);
Writer.WriteU(3, 2);
Writer.WriteU(7, 5);
Writer.WriteU(100, 8);
Writer.WriteU(0, 8);
Writer.WriteU(31, 8);
Writer.WriteUe(0);
Writer.WriteUe(ChromaFormatIdc);
if (ChromaFormatIdc == 3)
{
Writer.WriteBit(false);
}
Writer.WriteUe(0);
Writer.WriteUe(0);
Writer.WriteBit(false);
Writer.WriteBit(false); //Scaling matrix present flag
Writer.WriteUe(Log2MaxFrameNumMinus4);
Writer.WriteUe(PicOrderCntType);
if (PicOrderCntType == 0)
{
Writer.WriteUe(Log2MaxPicOrderCntLsbMinus4);
}
else if (PicOrderCntType == 1)
{
Writer.WriteBit(DeltaPicOrderAlwaysZeroFlag);
Writer.WriteSe(0);
Writer.WriteSe(0);
Writer.WriteUe(0);
}
int PicHeightInMbs = PicHeightInMapUnits / (FrameMbsOnlyFlag ? 1 : 2);
Writer.WriteUe(16);
Writer.WriteBit(false);
Writer.WriteUe(PicWidthInMbs - 1);
Writer.WriteUe(PicHeightInMbs - 1);
Writer.WriteBit(FrameMbsOnlyFlag);
if (!FrameMbsOnlyFlag)
{
Writer.WriteBit(MbAdaptiveFrameFieldFlag);
}
Writer.WriteBit(Direct8x8InferenceFlag);
Writer.WriteBit(false); //Frame cropping flag
Writer.WriteBit(false); //VUI parameter present flag
Writer.End();
//Picture Parameter Set.
Writer.WriteU(1, 24);
Writer.WriteU(0, 1);
Writer.WriteU(3, 2);
Writer.WriteU(8, 5);
Writer.WriteUe(0);
Writer.WriteUe(0);
Writer.WriteBit(EntropyCodingModeFlag);
Writer.WriteBit(false);
Writer.WriteUe(0);
Writer.WriteUe(NumRefIdxL0DefaultActiveMinus1);
Writer.WriteUe(NumRefIdxL1DefaultActiveMinus1);
Writer.WriteBit(WeightedPredFlag);
Writer.WriteU(WeightedBipredIdc, 2);
Writer.WriteSe(PicInitQpMinus26);
Writer.WriteSe(0);
Writer.WriteSe(ChromaQpIndexOffset);
Writer.WriteBit(DeblockingFilterControlPresentFlag);
Writer.WriteBit(ConstrainedIntraPredFlag);
Writer.WriteBit(RedundantPicCntPresentFlag);
Writer.WriteBit(Transform8x8ModeFlag);
Writer.WriteBit(true);
for (int Index = 0; Index < 6; Index++)
{
Writer.WriteBit(true);
WriteScalingList(Writer, ScalingMatrix4, Index * 16, 16);
}
if (Transform8x8ModeFlag)
{
for (int Index = 0; Index < 2; Index++)
{
Writer.WriteBit(true);
WriteScalingList(Writer, ScalingMatrix8, Index * 64, 64);
}
}
Writer.WriteSe(ChromaQpIndexOffset2);
Writer.End();
return(Data.ToArray());
}
}
private byte[] EncodeHeader()
{
using (MemoryStream data = new MemoryStream())
{
H264BitStreamWriter writer = new H264BitStreamWriter(data);
// Sequence Parameter Set.
writer.WriteU(1, 24);
writer.WriteU(0, 1);
writer.WriteU(3, 2);
writer.WriteU(7, 5);
writer.WriteU(100, 8);
writer.WriteU(0, 8);
writer.WriteU(31, 8);
writer.WriteUe(0);
writer.WriteUe(_chromaFormatIdc);
if (_chromaFormatIdc == 3)
{
writer.WriteBit(false);
}
writer.WriteUe(0);
writer.WriteUe(0);
writer.WriteBit(false);
writer.WriteBit(false); //Scaling matrix present flag
writer.WriteUe(_log2MaxFrameNumMinus4);
writer.WriteUe(_picOrderCntType);
if (_picOrderCntType == 0)
{
writer.WriteUe(_log2MaxPicOrderCntLsbMinus4);
}
else if (_picOrderCntType == 1)
{
writer.WriteBit(_deltaPicOrderAlwaysZeroFlag);
writer.WriteSe(0);
writer.WriteSe(0);
writer.WriteUe(0);
}
int picHeightInMbs = _picHeightInMapUnits / (_frameMbsOnlyFlag ? 1 : 2);
writer.WriteUe(16);
writer.WriteBit(false);
writer.WriteUe(_picWidthInMbs - 1);
writer.WriteUe(picHeightInMbs - 1);
writer.WriteBit(_frameMbsOnlyFlag);
if (!_frameMbsOnlyFlag)
{
writer.WriteBit(_mbAdaptiveFrameFieldFlag);
}
writer.WriteBit(_direct8x8InferenceFlag);
writer.WriteBit(false); //Frame cropping flag
writer.WriteBit(false); //VUI parameter present flag
writer.End();
// Picture Parameter Set.
writer.WriteU(1, 24);
writer.WriteU(0, 1);
writer.WriteU(3, 2);
writer.WriteU(8, 5);
writer.WriteUe(0);
writer.WriteUe(0);
writer.WriteBit(_entropyCodingModeFlag);
writer.WriteBit(false);
writer.WriteUe(0);
writer.WriteUe(_numRefIdxL0DefaultActiveMinus1);
writer.WriteUe(_numRefIdxL1DefaultActiveMinus1);
writer.WriteBit(_weightedPredFlag);
writer.WriteU(_weightedBipredIdc, 2);
writer.WriteSe(_picInitQpMinus26);
writer.WriteSe(0);
writer.WriteSe(_chromaQpIndexOffset);
writer.WriteBit(_deblockingFilterControlPresentFlag);
writer.WriteBit(_constrainedIntraPredFlag);
writer.WriteBit(_redundantPicCntPresentFlag);
writer.WriteBit(_transform8x8ModeFlag);
writer.WriteBit(true);
for (int index = 0; index < 6; index++)
{
writer.WriteBit(true);
WriteScalingList(writer, _scalingMatrix4, index * 16, 16);
}
if (_transform8x8ModeFlag)
{
for (int index = 0; index < 2; index++)
{
writer.WriteBit(true);
WriteScalingList(writer, _scalingMatrix8, index * 64, 64);
}
}
writer.WriteSe(_chromaQpIndexOffset2);
writer.End();
return(data.ToArray());
}
}
