/**
* Encode the message
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @param string $transfer_syntax The UID of the transfer syntax
*
* @return null
*/
function encode(CDicomStreamWriter $stream_writer, $transfer_syntax)
{
$handle = fopen("php://temp", "w+");
$group_stream = new CDicomStreamwriter($handle);
$this->setAffectedSopClass();
$this->setCommandField();
$this->setCommandDataSet();
$this->command_field->encode($group_stream, $transfer_syntax);
$this->message_id_request->encode($group_stream, $transfer_syntax);
$this->command_data_set->encode($group_stream, $transfer_syntax);
$group_length = strlen($group_stream->buf);
$this->setCommandGroupLength($group_length);
$this->command_group_length->encode($stream_writer, $transfer_syntax);
$this->setContent($group_stream->buf);
$stream_writer->write($group_stream->buf);
$group_stream->close();
}
/**
* Encode the datas, depending on the transfer syntax
*
* @param CDicomStreamWriter $stream_writer The stream writer
*
* @param string $transfer_syntax The UID of the transfer syntax
*
* @return null
*/
function encode(CDicomStreamWriter $stream_writer, $transfer_syntax)
{
foreach ($this->attributes as $group_number => $group) {
$this->datasets[$group_number] = array();
$handle = fopen("php://temp", "w+");
$group_writer = new CDicomStreamWriter($handle);
foreach ($group as $element_number => $value) {
$dataset = new CDicomDataSet(array("group_number" => $group_number, "element_number" => $element_number, "value" => $value));
$dataset->encode($group_writer, $transfer_syntax);
$this->datasets[$group_number][$element_number] = $dataset;
}
$length = strlen($group_writer->buf);
$group_length_dataset = new CDicomDataSet(array("group_number" => $group_number, "element_number" => 0x0, "value" => $length));
$group_length_dataset->encode($stream_writer, $transfer_syntax);
$this->datasets[$group_number][0x0] = $group_length_dataset;
$stream_writer->write($group_writer->buf);
$group_writer->close();
}
$this->setContent($stream_writer->buf);
}
/**
* 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;
}
}