public void Parse(INalUnitReader reader, IResultNodeState resultState)
{
reader.GetFixedBits(1, 0, Attribute.ForbiddenZeroBit);
reader.State.NalRefIdc = reader.GetBits(2, Attribute.NalRefIdc);
reader.State.NalUnitType = (NalUnitType)reader.GetBits(5, Attribute.NalUnitType);
INalUnitPayloadParser nalUnitPayloadParser;
if (!_nalUnitParsers.TryGetValue(reader.State.NalUnitType, out nalUnitPayloadParser))
{
resultState.Invalidate();
return;
}
//Parse remainder with specific nalunitparser (NOTE: Is not a sub-object)
nalUnitPayloadParser.Parse(reader, resultState);
if (!resultState.Valid)
{
return; // Stop processing of invalid NAL unit.
}
if (!CanParseNalUnitType(reader.State.SliceState, reader.State.NalUnitType))
{
// Forward to the estimated end of the NAL unit
reader.Position = reader.Length;
resultState.Invalidate(); // Invalidates the result
resultState.Recover(); // Revalidates the reader state so parsing can continue!
return;
}
if (reader.State.NalUnitType == NalUnitType.SequenceParameterSet)
{
return; // Note: SPS validate their own data!
}
if (reader.State.NalUnitType == NalUnitType.PictureParameterSet)
{
return; // Note: PPS validate their own data!
}
if (!IsSlice(reader.State.NalUnitType) || !reader.State.SliceState.PictureState.EntropyCodingMode)
{
if (reader.GetBits(1) != 1) // rbsp_stop_one_bit (equal to 1)
{
resultState.Invalidate();
return;
}
}
if (IsSlice(reader.State.NalUnitType) && resultState.Valid)
{
return; // Random (e.g. audio) data is allowed after a valid slice
}
reader.ReadZeroAlignmentBits();
}