pynetdicom.pdu.P_DATA_TF¶
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class
pynetdicom.pdu.
P_DATA_TF
¶ A P-DATA-TF PDU.
A P-DATA-TF PDU is used once an association has been established to send DIMSE message data.
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pdu_length
¶ The number of bytes from the first byte following the PDU Length field to the last byte of the PDU.
Type: int
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pdu_type
¶ The PDU Type field value (0x04).
Type: int
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presentation_data_value_items
¶ The Presentation Data Value Item(s) field value.
Type: list of pdu.PresentationDataValueItem
Notes
A P-DATA-TF PDU requires the following parameters:
- PDU type (1, fixed value, 0x04)
- PDU length (1)
- Presentation data value Item(s) (1 or more)
Encoding
When encoded, a P-DATA-TF PDU has the following structure, taken from Table 9-22 [1] (offsets shown with Python indexing). PDUs are always encoded using Big Endian [2].
Offset Length Description 0 1 PDU type 1 1 Reserved 2 4 PDU length 6 Variable Presentation data value items References
[1] DICOM Standard, Part 8, Section 9.3.5 [2] DICOM Standard, Part 8, Section 9.3.1 -
__init__
()¶ Initialise a new P-DATA-TF PDU.
Methods
__init__
()Initialise a new P-DATA-TF PDU. decode
(bytestream)Decode bytestream and use the result to set the field values of the PDU. encode
()Return the encoded PDU as bytes. from_primitive
(primitive)Setup the current PDU using a P-DATA primitive. to_primitive
()Return a P-DATA primitive from the current PDU. Attributes
pdu_length
Return the PDU Length field value as an int. pdu_type
Return the PDU Type field value an int. -
decode
(bytestream)¶ Decode bytestream and use the result to set the field values of the PDU.
Parameters: bytestream (bytes) – The PDU data to be decoded.
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encode
()¶ Return the encoded PDU as bytes.
Returns: The encoded PDU. Return type: bytes
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from_primitive
(primitive)¶ Setup the current PDU using a P-DATA primitive.
Parameters: primitive (pdu_primitives.P_DATA) – The primitive to use to set the current PDU field values.
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pdu_length
Return the PDU Length field value as an int.
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pdu_type
Return the PDU Type field value an int.
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to_primitive
()¶ Return a P-DATA primitive from the current PDU.
Returns: The primitive representation of the current PDU. Return type: pdu_primitives.P_DATA
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