public int GetDiff(EncodeBuffer buffer)
{
int diff = Math.Abs(buffer.offset - offset);
diff = Math.Max(Math.Abs(buffer.serialize_counter - serialize_counter), diff);
return(diff);
}
public static void EncodeSegmentAck(EncodeBuffer buffer, BacnetPduTypes type, byte original_invoke_id, byte sequence_number, byte actual_window_size)
{
buffer.buffer[buffer.offset++] = (byte)type;
buffer.buffer[buffer.offset++] = original_invoke_id;
buffer.buffer[buffer.offset++] = sequence_number;
buffer.buffer[buffer.offset++] = actual_window_size;
}
public EncodeBuffer Copy()
{
EncodeBuffer ret = new EncodeBuffer();
ret.buffer = buffer;
ret.max_offset = max_offset;
ret.min_limit = min_limit;
ret.offset = offset;
ret.result = result;
ret.serialize_counter = serialize_counter;
ret.expandable = expandable;
return(ret);
}
public static void EncodeConfirmedServiceRequest(EncodeBuffer buffer, BacnetPduTypes type, BacnetConfirmedServices service, BacnetMaxSegments max_segments, BacnetMaxApdu max_adpu, byte invoke_id, byte sequence_number, byte proposed_window_size)
{
buffer.buffer[buffer.offset++] = (byte)type;
buffer.buffer[buffer.offset++] = (byte)((byte)max_segments | (byte)max_adpu);
buffer.buffer[buffer.offset++] = invoke_id;
if ((type & BacnetPduTypes.SEGMENTED_MESSAGE) > 0)
{
buffer.buffer[buffer.offset++] = sequence_number;
buffer.buffer[buffer.offset++] = proposed_window_size;
}
buffer.buffer[buffer.offset++] = (byte)service;
}
public static int EncodeComplexAck(EncodeBuffer buffer, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id, byte sequence_number, byte proposed_window_number)
{
int len = 3;
buffer.buffer[buffer.offset++] = (byte)type;
buffer.buffer[buffer.offset++] = invoke_id;
if ((type & BacnetPduTypes.SEGMENTED_MESSAGE) > 0)
{
buffer.buffer[buffer.offset++] = sequence_number;
buffer.buffer[buffer.offset++] = proposed_window_number;
len += 2;
}
buffer.buffer[buffer.offset++] = (byte)service;
return(len);
}
public static void EncodeSimpleAck(EncodeBuffer buffer, BacnetPduTypes type, BacnetConfirmedServices service, byte invoke_id)
{
buffer.buffer[buffer.offset++] = (byte)type;
buffer.buffer[buffer.offset++] = invoke_id;
buffer.buffer[buffer.offset++] = (byte)service;
}
public static void EncodeUnconfirmedServiceRequest(EncodeBuffer buffer, BacnetPduTypes type, BacnetUnconfirmedServices service)
{
buffer.buffer[buffer.offset++] = (byte)type;
buffer.buffer[buffer.offset++] = (byte)service;
}
/// <summary>
/// Also EncodeReject
/// </summary>
/// <param name="buffer"></param>
/// <param name="offset"></param>
/// <param name="type"></param>
/// <param name="invoke_id"></param>
/// <param name="reason"></param>
/// <returns></returns>
public static void EncodeAbort(EncodeBuffer buffer, BacnetPduTypes type, byte invoke_id, byte reason)
{
buffer.buffer[buffer.offset++] = (byte)type;
buffer.buffer[buffer.offset++] = invoke_id;
buffer.buffer[buffer.offset++] = reason;
}
public static void Encode(EncodeBuffer buffer, BacnetNpduControls function, BacnetAddress destination, BacnetAddress source, byte hop_count, BacnetNetworkMessageTypes network_msg_type, ushort vendor_id)
{
// Modif FC
bool has_destination = destination != null && destination.net > 0; // && destination.net != 0xFFFF;
bool has_source = source != null && source.net > 0 && source.net != 0xFFFF;
buffer.buffer[buffer.offset++] = BACNET_PROTOCOL_VERSION;
buffer.buffer[buffer.offset++] = (byte)(function | (has_destination ? BacnetNpduControls.DestinationSpecified : 0) | (has_source ? BacnetNpduControls.SourceSpecified : 0));
if (has_destination)
{
buffer.buffer[buffer.offset++] = (byte)((destination.net & 0xFF00) >> 8);
buffer.buffer[buffer.offset++] = (byte)((destination.net & 0x00FF) >> 0);
if (destination.net == 0xFFFF) //patch by F. Chaxel
{
buffer.buffer[buffer.offset++] = 0;
}
else
{
buffer.buffer[buffer.offset++] = (byte)destination.adr.Length;
if (destination.adr.Length > 0)
{
for (int i = 0; i < destination.adr.Length; i++)
{
buffer.buffer[buffer.offset++] = destination.adr[i];
}
}
}
}
if (has_source)
{
buffer.buffer[buffer.offset++] = (byte)((source.net & 0xFF00) >> 8);
buffer.buffer[buffer.offset++] = (byte)((source.net & 0x00FF) >> 0);
// Modif FC
if (destination.net == 0xFFFF)
{
buffer.buffer[buffer.offset++] = 0;
}
else
{
buffer.buffer[buffer.offset++] = (byte)destination.adr.Length;
if (destination.adr.Length > 0)
{
for (int i = 0; i < destination.adr.Length; i++)
{
buffer.buffer[buffer.offset++] = destination.adr[i];
}
}
}
}
if (has_destination)
{
buffer.buffer[buffer.offset++] = hop_count;
}
/*
* //display warning
* if (has_destination || has_source)
* {
* System.Diagnostics.Trace.TraceWarning("NPDU size is more than 4. This will give an error in the current max_apdu calculation");
* }
*/
if ((function & BacnetNpduControls.NetworkLayerMessage) > 0)
{
buffer.buffer[buffer.offset++] = (byte)network_msg_type;
if (((byte)network_msg_type) >= 0x80)
{
buffer.buffer[buffer.offset++] = (byte)((vendor_id & 0xFF00) >> 8);
buffer.buffer[buffer.offset++] = (byte)((vendor_id & 0x00FF) >> 0);
}
}
}
