/**
* Decode the PDU
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodePDU(CDicomStreamReader $stream_reader)
{
$stream_reader->skip(1);
$this->result = $stream_reader->readUInt8();
$this->source = $stream_reader->readUInt8();
$this->diagnostic = $stream_reader->readUInt8();
}
/**
* Decode the Presentation Syntax
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return void
*/
function decodeItem(CDicomStreamReader $stream_reader)
{
$this->id = $stream_reader->readUInt8();
$stream_reader->skip(3);
$this->abstract_syntax = CDicomPDUItemFactory::decodeItem($stream_reader);
$this->transfer_syntaxes = CDicomPDUItemFactory::decodeConsecutiveItemsByType($stream_reader, 0x40);
}
/**
* Decode the Sop Class Extended Negociation
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodeItem(CDicomStreamReader $stream_reader)
{
$this->uid_length = $stream_reader->readUInt16();
$this->sop_class_uid = $stream_reader->readUID($this->uid_length);
$this->sca_support = $stream_reader->readUInt8();
$stream_reader->skip(1);
$this->sca_digital_signature_support = $stream_reader->readUInt8();
$stream_reader->skip(1);
$this->sca_element_coercion = $stream_reader->readUInt8();
$stream_reader->skip(1);
}
/**
* Decode the Presentation Syntax
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodeItem(CDicomStreamReader $stream_reader)
{
$this->id = $stream_reader->readUInt8();
$stream_reader->skip(1);
$this->reason = $stream_reader->readUInt8();
$stream_reader->skip(1);
$this->transfer_syntax = CDicomPDUItemFactory::decodeItem($stream_reader);
}
/**
* Read the type of the PDU from the stream
*
* @param CDicomStreamReader $stream The stream reader
*
* @return string
*/
static function readType(CDicomStreamReader $stream)
{
$tmp = $stream->readUInt8();
$stream->skip(1);
return self::getPDUClass($tmp);
}
/**
* Decode the data set with the explicit VR
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @param string $endianness The endianness, must be equal to "BE" (Big Endian) or "LE" (Little Endian)
*
* @return null
*/
protected function decodeExplicit(CDicomStreamReader $stream_reader, $endianness)
{
$this->group_number = $stream_reader->readUInt16($endianness);
$this->element_number = $stream_reader->readUInt16($endianness);
$this->vr = $stream_reader->readString(2);
if (in_array($this->vr, array("OB", "OW", "OF", "SQ", "UT", "UN"))) {
$stream_reader->skip(2);
$stream_reader->readUInt32($this->length, $endianness);
} else {
$stream_reader->readUInt16($this->length, $endianness);
}
if ($this->length > 0 && $this->length < 0xffffffff || $this->vr == "SQ") {
$this->decodeValue($stream_reader, $endianness);
}
}
/**
* Check if the message is well formed
*
* @param string $msg The message
*
* @param CInteropActor $actor The actor who sent the message
*
* @return boolean
*/
function isWellFormed($msg, CInteropActor $actor = null)
{
$stream = fopen("php://temp", 'w+');
fwrite($stream, $msg);
$stream_reader = new CDicomStreamReader($stream);
$stream_reader->rewind();
$type = $stream_reader->readHexByte();
if ($type != "04") {
$stream_reader->close();
return false;
}
$stream_reader->skip(1);
$length = $stream_reader->readUInt32();
$stream_reader->close();
if (strlen($msg) != $length + 6) {
return false;
}
return true;
}
/**
* Decode the PDU
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return null
*/
function decodePDU(CDicomStreamReader $stream_reader)
{
$stream_reader->skip(4);
}
/**
* Read the type of an item. If a item type has been read but not decoded, it returns this type.
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return string The name of the item class
*/
static function readItemType(CDicomStreamReader $stream_reader)
{
$item_type = null;
if (!self::$next_item) {
$tmp = $stream_reader->readUInt8();
$stream_reader->skip(1);
if (!$tmp) {
return false;
}
$item_type = self::getItemClass($tmp);
//$stream_reader->readHexByte()];
} else {
$item_type = self::$next_item;
self::$next_item = null;
}
return $item_type;
}
/**
* Decode the PDU
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return void
*/
function decodePDU(CDicomStreamReader $stream_reader)
{
$this->protocol_version = $stream_reader->readUInt16();
$stream_reader->skip(2);
$this->called_AE_title = $stream_reader->readString(16);
// On test si called_AE_title = AE title du serveur
$this->calling_AE_title = $stream_reader->readString(16);
// On passe 32 octets, réservés par Dicom
$stream_reader->skip(32);
$this->application_context = CDicomPDUItemFactory::decodeItem($stream_reader);
$this->presentation_contexts = CDicomPDUItemFactory::decodeConsecutiveItemsByType($stream_reader, 0x20);
$this->user_info = CDicomPDUItemFactory::decodeItem($stream_reader);
}
/**
* Decode the PDU
*
* @param CDicomStreamReader $stream_reader The stream reader
*
* @return void
*/
function decodePDU(CDicomStreamReader $stream_reader)
{
$this->protocol_version = $stream_reader->readUInt16();
// On vérifie que la version du protocole est bien 0001
if ($this->protocol_version != 0x1) {
// Erreur
echo "Protocol version differente de 1";
}
$stream_reader->skip(2);
$this->called_AE_title = $stream_reader->readString(16);
// On test si called_AE_title = AE title du serveur
$this->calling_AE_title = $stream_reader->readString(16);
// On passe 32 octets, réservés par Dicom
$stream_reader->skip(32);
$this->application_context = CDicomPDUItemFactory::decodeItem($stream_reader);
$this->presentation_contexts = CDicomPDUItemFactory::decodeConsecutiveItemsByType($stream_reader, 0x21);
$this->user_info = CDicomPDUItemFactory::decodeItem($stream_reader);
}