/**
* Encode the Transfer Syntax
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @return null
*/
function encodeItem(CDicomStreamWriter $stream_writer)
{
$stream_writer->writeUInt8($this->type);
$stream_writer->skip(1);
$stream_writer->writeUInt16($this->length);
$stream_writer->writeUID($this->name, $this->length);
}
/**
* Encode the Iplementation Class UID
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @return null
*/
function encodeItem(CDicomStreamWriter $stream_writer)
{
$this->calculateLength();
$stream_writer->writeUint8($this->type);
$stream_writer->skip(1);
$stream_writer->writeUInt16($this->length);
$stream_writer->writeUID($this->uid, $this->length);
}
/**
* Encode the Sop Class Extended Negociation
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @return null
*/
function encodeItem(CDicomStreamWriter $stream_writer)
{
$this->calculateLength();
$stream_writer->writeUInt8($this->type);
$stream_writer->skip(1);
$stream_writer->writeUInt16($this->length);
$stream_writer->writeUInt16($this->uid_length);
$stream_writer->writeUID($this->sop_class_uid, $this->uid_length);
$stream_writer->writeUInt8($this->sca_support);
$stream_writer->skip(1);
$stream_writer->writeUInt8($this->sca_digital_signature_support);
$stream_writer->skip(1);
$stream_writer->writeUInt8($this->sca_element_coercion);
$stream_writer->skip(1);
}
/**
* Encode the value
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @param string $endianness The endianness, must be equal to "BE" (Big Endian) or "LE" (Little Endian)
*
* @return null
*
* @todo traiter les cas FL, FD, OB, OW, OF, SQ
*/
protected function encodeValue(CDicomStreamWriter $stream_writer, $endianness)
{
switch ($this->vr) {
case 'AE':
case 'AS':
case 'CS':
case 'DA':
case 'DS':
case 'DT':
case 'FL':
case 'FD':
case 'IS':
case 'LO':
case 'LT':
case 'OB':
case 'OF':
case 'OX':
case 'OW':
case 'PN':
case 'SH':
case 'ST':
case 'TM':
case 'UN':
case 'UT':
if ($this->length & 1) {
$this->value .= " ";
$this->length++;
}
$stream_writer->writeString($this->value, $this->length);
break;
case 'AT':
$stream_writer->writeUInt16($this->value[0], $endianness);
$stream_writer->writeUInt16($this->value[1], $endianness);
break;
case 'SL':
$stream_writer->writeInt32($this->value, $endianness);
break;
case 'SS':
$stream_writer->writeInt16($this->value, $endianness);
break;
case 'UI':
$stream_writer->writeUID($this->value, $this->length);
if ($this->length & 1) {
$stream_writer->writeUInt8(0x0);
$this->length++;
}
break;
case 'UL':
$stream_writer->writeUInt32($this->value, $endianness);
break;
case 'US':
$stream_writer->writeUInt16($this->value, $endianness);
break;
case 'SQ':
$value_stream = new CDicomStreamWriter();
$value_tmp = array();
if (is_array($this->value)) {
foreach ($this->value as $_sequence) {
$sequence = array();
$sequence_stream = new CDicomStreamWriter();
foreach ($_sequence as $_item) {
$dataset = new CDicomDataSet($_item);
$dataset->encode($sequence_stream, $this->transfer_syntax);
$sequence[] = $dataset;
}
$sequence_length = strlen($sequence_stream->buf);
$value_stream->writeUInt16(0xfffe, $endianness);
$value_stream->writeUInt16(0xe000, $endianness);
$value_stream->writeUInt32($sequence_length, $endianness);
$value_stream->write($sequence_stream->buf, $sequence_length);
$this->length += 8 + $sequence_length;
$value_tmp[] = $sequence;
}
$stream_writer->write($value_stream->buf, $this->length);
$this->value = $value_tmp;
} else {
$this->length = 8;
$stream_writer->writeUInt16(0xfffe, $endianness);
$stream_writer->writeUInt16(0xe000, $endianness);
$stream_writer->writeUInt32(0, $endianness);
}
break;
default:
break;
}
}
/**
* Encode the SOP class common extended negociation item
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @return null
*/
function encodeItem(CDicomStreamWriter $stream_writer)
{
$this->calculateLength();
$stream_writer->writeUInt8($this->type);
$stream_writer->skip(1);
$stream_writer->writeUInt16($this->length);
$stream_writer->writeUInt16($this->sop_uid_length);
$stream_writer->writeUID($this->sop_class_uid, $this->sop_uid_length);
$stream_writer->writeUInt16($this->service_uid_length);
$stream_writer->writeUID($this->service_class_uid, $this->service_uid_length);
$stream_writer->writeUInt16($this->related_sop_classes_id_length);
foreach ($this->related_sop_classes_id as $_related_sop_class_id) {
$_related_sop_class_id->encodeItem($stream_writer);
}
}
/**
* Encode the field
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @return null
*/
function encodeField(CDicomStreamWriter $stream_writer)
{
$stream_writer->writeUInt8($this->class_uid_length);
$stream_writer->writeUID($this->class_uid, $this->class_uid_length);
}
