static private XElement _WriteDataNodes(SequenceBase sequence, Dictionary <Guid, int> effectTableIndex, Dictionary <Guid, int> channelIdTableIndex)
{
// Going to serialize data by channel. Each channel will be represented.
// Intervals will be referenced by the time of each command serialized
// within a given channel.
// Store all in a binary stream converted to base-64.
string data = null;
using (MemoryStream stream = new System.IO.MemoryStream()) {
using (BinaryWriter dataWriter = new BinaryWriter(stream)) {
foreach (CommandNode commandNode in sequence.Data.GetCommands())
{
// Index of the command spec id from the command table (word).
dataWriter.Write((ushort)effectTableIndex[commandNode.Command.Effect.TypeId]);
// Referenced channel count (word).
dataWriter.Write((ushort)commandNode.TargetChannels.Length);
// Parameter count (byte)
dataWriter.Write((byte)commandNode.Command.ParameterValues.Length);
// Start time (dword).
dataWriter.Write(commandNode.StartTime);
// Time span (dword).
dataWriter.Write(commandNode.TimeSpan);
// Referenced channels (index into channel table, word).
foreach (Channel channel in commandNode.TargetChannels)
{
dataWriter.Write((ushort)channelIdTableIndex[channel.Id]);
}
dataWriter.Flush();
// Parameters (various)
foreach (object paramValue in commandNode.Command.ParameterValues)
{
ParameterValue.WriteToStream(stream, paramValue);
}
}
data = Convert.ToBase64String(stream.GetBuffer(), 0, (int)stream.Length);
}
}
return(new XElement("Data", data));
}