Metadata Object permits authors to store stream-based metadata in * a file. This object supports the same types of metadata information as the * Extended Content Description Object except that it also allows a * stream number to be specified. * * @package php-reader * @subpackage ASF * @author Sven Vollbehr * @copyright Copyright (c) 2008 The PHP Reader Project Workgroup * @license http://code.google.com/p/php-reader/wiki/License New BSD License * @version $Rev: 102 $ */ final class ASF_Object_Metadata extends ASF_Object { /** @var Array */ private $_descriptions = array(); /** * Constructs the class with given parameters and reads object related data * from the ASF file. * * @param Reader $reader The reader object. * @param Array $options The options array. */ public function __construct($reader, &$options = array()) { parent::__construct($reader, $options); $descriptionRecordsCount = $this->_reader->readUInt16LE(); for ($i = 0; $i < $descriptionRecordsCount; $i++) { $this->_reader->skip(2); $record = array("streamNumber" => $this->_reader->readUInt16LE()); $nameLength = $this->_reader->readUInt16LE(); $dataType = $this->_reader->readUInt16LE(); $dataLength = $this->_reader->readUInt32LE(); $record["name"] = iconv ("utf-16le", $this->getOption("encoding"), $this->_reader->readString16LE($nameLength)); switch ($dataType) { case 0: $record["data"] = iconv ("utf-16le", $this->getOption("encoding"), $this->_reader->readString16LE($dataLength)); break; case 1: $record["data"] = $this->_reader->readString16LE($dataLength); break; case 2: $record["data"] = $this->_reader->readUInt16LE() ? true : false; break; case 3: $record["data"] = $this->_reader->readUInt32LE(); break; case 4: $record["data"] = $this->_reader->readInt64LE(); break; case 5: $record["data"] = $this->_reader->readUInt16LE(); break; } $this->_descriptions[] = $record; } } /** * Returns the array of description records. * * @return Array */ public function getDescriptions() { return $this->_descriptions; } }