/// <summary>
/// Parse Slow-Path Pointer Update PDU
/// </summary>
/// <param name="updateData">update data (decompressed if were compressed</param>
/// <param name="shareDataHeader">share data header</param>
/// <returns>Slow-Path Pointer Update PDU</returns>
public TS_POINTER_PDU ParseTsPointerPdu(
byte[] updateData,
TS_SHAREDATAHEADER shareDataHeader)
{
// index of update data
int index = 0;
TS_POINTER_PDU pdu = new TS_POINTER_PDU();
// TS_POINTER_PDU: shareDataHeader
pdu.shareDataHeader = shareDataHeader;
// TS_POINTER_PDU: messageType
pdu.messageType = ParseUInt16(updateData, ref index, false);
// TS_POINTER_PDU: pad2Octets
pdu.pad2Octets = ParseUInt16(updateData, ref index, false);
// TS_POINTER_PDU: pointerAttributeData
int remainLength = updateData.Length - index;
switch (pdu.messageType)
{
// TS_PTRMSGTYPE_SYSTEM: 4 bytes
case (ushort)TS_POINTER_PDU_messageType_Values.TS_PTRMSGTYPE_SYSTEM:
pdu.pointerAttributeData = GetBytes(updateData, ref index,
ConstValue.TS_PTRMSGTYPE_SYSTEM_DATA_LENGTH);
break;
// TS_PTRMSGTYPE_POSITION: 4 bytes
case (ushort)TS_POINTER_PDU_messageType_Values.TS_PTRMSGTYPE_POSITION:
pdu.pointerAttributeData = GetBytes(updateData, ref index,
ConstValue.TS_PTRMSGTYPE_POSITION_DATA_LENGTH);
break;
// TS_PTRMSGTYPE_COLOR: variable number of bytes
case (ushort)TS_POINTER_PDU_messageType_Values.TS_PTRMSGTYPE_COLOR:
pdu.pointerAttributeData = GetBytes(updateData, ref index, remainLength);
break;
// TS_PTRMSGTYPE_CACHED: 2 bytes
case (ushort)TS_POINTER_PDU_messageType_Values.TS_PTRMSGTYPE_CACHED:
pdu.pointerAttributeData = GetBytes(updateData, ref index,
ConstValue.TS_PTRMSGTYPE_CACHED_DATA_LENGTH);
break;
// TS_PTRMSGTYPE_POINTER: variable number of bytes
case (ushort)TS_POINTER_PDU_messageType_Values.TS_PTRMSGTYPE_POINTER:
pdu.pointerAttributeData = GetBytes(updateData, ref index, remainLength);
break;
default:
throw new FormatException(ConstValue.ERROR_MESSAGE_ENUM_UNRECOGNIZED);
}
// Check if data length exceeded expectation
VerifyDataLength(updateData.Length, index, ConstValue.ERROR_MESSAGE_DATA_LENGTH_EXCEEDED);
return pdu;
}
private byte[] EncodePtr(TS_POINTER_PDU ptrData)
{
List<byte> totalBuffer = new List<byte>();
RdpbcgrEncoder.EncodeStructure(totalBuffer, ptrData.shareDataHeader);
List<byte> buffer = new List<byte>();
RdpbcgrEncoder.EncodeStructure(buffer, (ushort)ptrData.messageType);
RdpbcgrEncoder.EncodeStructure(buffer, ptrData.pad2Octets);
if (ptrData.pointerAttributeData.GetType() == typeof(byte[]))
{
RdpbcgrEncoder.EncodeBytes(buffer, (byte[])ptrData.pointerAttributeData);
}
else
{
RdpbcgrEncoder.EncodeStructure(buffer, ptrData.pointerAttributeData);
}
if (ptrData.shareDataHeader.compressedType != compressedType_Values.None)
{
RdpbcgrEncoder.EncodeBytes(
totalBuffer, serverSessionContext.Compress(ptrData.shareDataHeader.compressedType, buffer.ToArray()));
}
else
{
RdpbcgrEncoder.EncodeBytes(totalBuffer, buffer.ToArray());
}
return totalBuffer.ToArray();
}
