internal static FramingLayer Parse(BigEndianBinaryReader buffer)
{
UInt16 flagsAndFramingLength = (UInt16)buffer.ReadInt16();
UInt16 flags = (UInt16)(flagsAndFramingLength & SACNPacket.FIRST_FOUR_BITS_MASK);
Debug.Assert(flags == SACNPacket.FLAGS);
UInt16 length = (UInt16)(flagsAndFramingLength & SACNPacket.LAST_TWELVE_BITS_MASK);
Int32 vector2 = buffer.ReadInt32();
Debug.Assert(vector2 == FRAMING_VECTOR);
byte[] sourceNameBytes = buffer.ReadBytes(64);
string sourceName = new string(Encoding.UTF8.GetChars(sourceNameBytes)).TrimEnd('\0');
byte priority = buffer.ReadByte();
Int16 reserved = buffer.ReadInt16();
Debug.Assert(reserved == RESERVED);
byte sequenceID = buffer.ReadByte();
byte options = buffer.ReadByte();
UInt16 universeID = buffer.ReadUInt16();
FramingLayer framingLayer = new FramingLayer()
{
SourceName = sourceName,
Priority = priority,
SequenceID = sequenceID,
Options = FramingOptions.Parse(options),
UniverseID = universeID,
DMPLayer = DMPLayer.Parse(buffer)
};
return(framingLayer);
}
internal static RootLayer Parse(BigEndianBinaryReader buffer)
{
Int16 preambleLength = buffer.ReadInt16();
Debug.Assert(preambleLength == PREAMBLE_LENGTH);
Int16 postambleLength = buffer.ReadInt16();
Debug.Assert(postambleLength == POSTAMBLE_LENGTH);
byte[] packetIdentifier = buffer.ReadBytes(12);
Debug.Assert(packetIdentifier.SequenceEqual(PACKET_IDENTIFIER));
UInt16 flagsAndRootLength = (UInt16)buffer.ReadInt16();
UInt16 flags = (UInt16)(flagsAndRootLength & SACNPacket.FIRST_FOUR_BITS_MASK);
Debug.Assert(flags == SACNPacket.FLAGS);
UInt16 length = (UInt16)(flagsAndRootLength & SACNPacket.LAST_TWELVE_BITS_MASK);
Int32 vector = buffer.ReadInt32();
Debug.Assert(vector == ROOT_VECTOR);
Guid cid = new Guid(buffer.ReadBytes(16));
RootLayer rootLayer = new RootLayer()
{
UUID = cid,
FramingLayer = FramingLayer.Parse(buffer)
};
return(rootLayer);
}
public byte[] ToArray()
{
using (var stream = new MemoryStream(Length))
using (var buffer = new BigEndianBinaryWriter(stream))
{
buffer.Write(PREAMBLE_LENGTH);
buffer.Write(POSTAMBLE_LENGTH);
buffer.Write(PACKET_IDENTIFIER);
UInt16 flagsAndRootLength = (UInt16)(SACNPacket.FLAGS | (UInt16)(Length - 16));
buffer.Write(flagsAndRootLength);
buffer.Write(ROOT_VECTOR);
buffer.Write(UUID.ToByteArray());
buffer.Write(FramingLayer.ToArray());
return(stream.ToArray());
}
}
public RootLayer(Guid uuid, string sourceName, UInt16 universeID, byte sequenceID, byte[] data, byte priority)
{
UUID = uuid;
FramingLayer = new FramingLayer(sourceName, universeID, sequenceID, data, priority);
}