/**
* Decode the PDU
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodePDU(CDicomStreamReader $stream_reader)
{
$this->pdvs = array();
$stream_reader->setStreamLength($this->getTotalLength());
while ($stream_reader->getPos() < $stream_reader->getStreamLength()) {
$pdv_length = $stream_reader->readUInt32();
// + 4;
//$stream_reader->seek(-4);
$pdv_content = $stream_reader->read($pdv_length);
$pdv_handle = fopen('php://temp', 'w+');
fwrite($pdv_handle, $pdv_content, $pdv_length);
$pdv_stream = new CDicomStreamReader($pdv_handle);
$pdv_stream->rewind();
$pdv = new CDicomPDV(array("presentation_contexts" => $this->presentation_contexts, "length" => $pdv_length));
$pdv->decode($pdv_stream);
$this->pdvs[] = $pdv;
}
}
/**
* Decode the SOP class common extended negociation item
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodeItem(CDicomStreamReader $stream_reader)
{
$this->sop_uid_length = $stream_reader->readUInt16();
$this->sop_class_uid = $stream_reader->readUID($this->sop_uid_length);
$this->service_uid_length = $stream_reader->readUInt16();
$this->service_class_uid = $stream_reader->readUID($this->service_uid_length);
$this->related_sop_classes_id_length = $stream_reader->readUInt16();
if ($this->related_sop_classes_id_length > 0) {
$related_sop_classes_content = $stream_reader->read($this->related_sop_classes_id_length);
$handle = fopen("php://temp", "w+");
fwrite($handle, $related_sop_classes_content);
$related_sop_classes_stream = new CDicomStreamReader($handle);
$this->related_sop_classes_id = array();
while ($related_sop_classes_stream->tell() <= $this->related_sop_classes_id_length) {
$related_sop_class_id = new CDicomSubFieldRelatedSopClassIdentification();
$related_sop_class_id->decodeField($related_sop_classes_stream);
}
}
}
/**
* Decode the PDV
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decode(CDicomStreamReader $stream_reader)
{
// On fait un stream temp pour le message
//$this->length = $stream_reader->readUInt32();
$this->pres_context_id = $stream_reader->readUInt8();
$this->message_control_header = $stream_reader->readUInt8();
$message_length = $this->length - 2;
$message_content = $stream_reader->read($message_length);
$handle = fopen("php://temp", "w+");
fwrite($handle, $message_content);
$message_stream = new CDicomStreamReader($handle);
$message_stream->rewind();
$message_stream->setStreamLength($message_length);
if (!($this->transfer_syntax = $this->getTransferSyntax())) {
/** @todo throw exception **/
}
$this->message = CDicomMessageFactory::decodeMessage($message_stream, $this->message_control_header, $this->transfer_syntax);
$message_stream->close();
$content = substr($stream_reader->buf, 13) . $message_stream->buf;
$this->setBinaryContent($content);
}
