/// <summary>
/// Encode payload data delta frame
/// </summary>
/// <param name="binaryEncoder"></param>
private void EncodeMessageDataDeltaFrame(BinaryEncoder binaryEncoder)
{
// calculate the number of fields that will be written
int fieldCount = DataSet.Fields.Count(f => f != null);
// The field count is written for RadData encoding too unlike for KeyFrame message
binaryEncoder.WriteUInt16("FieldCount", (UInt16)fieldCount);
FieldTypeEncodingMask fieldType = (FieldTypeEncodingMask)(((byte)DataSetFlags1 & kFieldTypeUsedBits) >> 1);
for (int i = 0; i < DataSet.Fields.Length; i++)
{
Field field = DataSet.Fields[i];
if (field == null)
{
continue; // ignore null fields
}
// write field index
binaryEncoder.WriteUInt16("FieldIndex", (UInt16)i);
switch (fieldType)
{
case FieldTypeEncodingMask.Variant:
// 00 Variant type
binaryEncoder.WriteVariant("FieldValue", field.Value.WrappedValue);
break;
case FieldTypeEncodingMask.DataValue:
// 10 DataValue type
binaryEncoder.WriteDataValue("FieldValue", field.Value);
break;
case FieldTypeEncodingMask.RawData:
EncodeFieldAsRawData(binaryEncoder, field);
break;
case FieldTypeEncodingMask.Reserved:
// ignore
break;
}
}
}
/// <summary>
/// Encode payload data
/// </summary>
/// <param name="binaryEncoder"></param>
private void EncodeMessageDataKeyFrame(BinaryEncoder binaryEncoder)
{
FieldTypeEncodingMask fieldType = (FieldTypeEncodingMask)(((byte)DataSetFlags1 & kFieldTypeUsedBits) >> 1);
switch (fieldType)
{
case FieldTypeEncodingMask.Variant:
binaryEncoder.WriteUInt16("DataSetFieldCount", (UInt16)DataSet.Fields.Length);
foreach (Field field in DataSet.Fields)
{
// 00 Variant type
binaryEncoder.WriteVariant("Variant", field.Value.WrappedValue);
}
break;
case FieldTypeEncodingMask.DataValue:
binaryEncoder.WriteUInt16("DataSetFieldCount", (UInt16)DataSet.Fields.Length);
foreach (Field field in DataSet.Fields)
{
// 10 DataValue type
binaryEncoder.WriteDataValue("DataValue", field.Value);
}
break;
case FieldTypeEncodingMask.RawData:
// DataSetFieldCount is not persisted for RawData
foreach (Field field in DataSet.Fields)
{
EncodeFieldAsRawData(binaryEncoder, field);
}
break;
case FieldTypeEncodingMask.Reserved:
// ignore
break;
}
}
