private int Decode_Service_Request(ref Byte[] request, uint request_len, ref BACNET_SUBSCRIBE_COV_DATA data)
{
int len = 0;
Byte tag_number = 0;
UInt32 len_value = 0;
UInt32 decoded_value = 0; /* for decoding */
UInt16 decoded_type = 0; /* for decoding */
// if (decode_is_context_tag(&apdu[len], 0))
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Unsigned(ref request, len_value, ref decoded_value, len);
data.subscriberProcessIdentifier = decoded_value;
/* tag 1 - monitoredObjectIdentifier */
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Object_Id(ref request, ref decoded_type, ref data.monitoredObjectIdentifier.instance, len);
data.monitoredObjectIdentifier.type = decoded_type;
/* optional parameters - if missing, means cancellation */
if ((uint)len < request_len)
{
if (BasicalProcessor.Decode_Is_Context_Tag(ref request, 2, len))
{
data.cancellationRequest = false;
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
data.issueConfirmedNotifications = BasicalProcessor.Decode_Context_Boolean(ref request, len);
len += (int)len_value;
// if (decode_is_context_tag(&apdu[len], 3))
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Unsigned(ref request, len_value, ref decoded_value, len);
data.lifetime = decoded_value;
}
else
{
data.cancellationRequest = true;
}
}
else
{
data.cancellationRequest = true;
}
return(len);
}
private int Unconfirm_Cov_Decode(ref Byte[] request, uint service_len, ref BACNET_COV_DATA data)
{
int len = 0; /* return value */
Byte tag_number = 0;
UInt32 len_value = 0;
UInt32 decoded_value = 0; /* for decoding */
UInt16 decoded_type = 0; /* for decoding */
UInt32 property = 0; /* for decoding */
/* value in list */
/* tag 0 - subscriberProcessIdentifier */
// if (decode_is_context_tag(&apdu[len], 0))
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Unsigned(ref request, len_value, ref decoded_value, len);
data.subscriberProcessIdentifier = decoded_value;
/* tag 1 - initiatingDeviceIdentifier */
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Object_Id(ref request, ref decoded_type, ref data.initiatingDeviceIdentifier, len);
/* tag 2 - monitoredObjectIdentifier */
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Object_Id(ref request, ref decoded_type, ref data.monitoredObjectIdentifier.instance, len);
/* tag 3 - timeRemaining */
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Unsigned(ref request, len_value, ref decoded_value, len);
data.timeRemaining = decoded_value;
/* tag 4: opening context tag - listOfValues */
// if (!decode_is_opening_tag_number(&apdu[len], 4)) {
len++;
while (true) //应该设置遇到时间戳就BREAK? 下面CLOSING TAG有break
{
BACNET_PROPERTY_VALUE value = new BACNET_PROPERTY_VALUE();
/* tag 0 - propertyIdentifier */
if (BasicalProcessor.Decode_Is_Context_Tag(ref request, 0, len))
{
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Enumerated(ref request, len_value, ref property, len);
value.propertyIdentifier = (BACNET_PROPERTY_ID)property;
}
else
{
return(-1);
}
/* tag 1 - propertyArrayIndex OPTIONAL */
if (BasicalProcessor.Decode_Is_Context_Tag(ref request, 1, len))
{
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Unsigned(ref request, len_value, ref decoded_value, len);
value.propertyArrayIndex = (UInt32)decoded_value;
}
else
{
value.propertyArrayIndex = BacnetConst.BACNET_ARRAY_ALL;//#define BACNET_ARRAY_ALL (~(unsigned int)0)
}
/* tag 2: opening context tag - value */
if (!BasicalProcessor.Decode_Is_Opening_Tag_Number(ref request, 2, len))
{
return(-1);
}
len++;
len += BasicalProcessor.Decode_Application_Data(ref request, (uint)(service_len - len), ref value.value, len);
if (!BasicalProcessor.Decode_Is_Closing_Tag_Number(ref request, 2, len))
{
return(-1);
}
len++;
/* tag 3 - priority OPTIONAL */
if (BasicalProcessor.Decode_Is_Context_Tag(ref request, 3, len))
{
len += BasicalProcessor.Decode_Tag_number_and_Value(ref request, ref tag_number, ref len_value, len);
len += BasicalProcessor.Decode_Unsigned(ref request, len_value, ref decoded_value, len);
value.priority = (Byte)decoded_value;
}
else
{
value.priority = 0;
}
data.listOfValues.Add(value);
if (BasicalProcessor.Decode_Is_Closing_Tag_Number(ref request, 4, len))
{
break;
}
}
return(len);
}
