/**
* Reads and constructs the boxes found within this box.
*
* @todo Does not parse iTunes internal ---- boxes.
*/
protected function constructBoxes($defaultclassname = "ISO14496_Box")
{
$base = $this->getOption("base", "");
if ($this->getType() != "file")
self::$_path[] = $this->getType();
$path = implode(self::$_path, ".");
while (true) {
$offset = $this->_reader->getOffset();
if ($offset >= $this->_offset + $this->_size)
break;
$size = $this->_reader->readUInt32BE();
$type = rtrim($this->_reader->read(4), " ");
if ($size == 1)
$size = $this->_reader->readInt64BE();
if ($size == 0)
$size = $this->_reader->getSize() - $offset;
if (preg_match("/^\xa9?[a-z0-9]{3,4}$/i", $type) &&
substr($base, 0, min(strlen($base), strlen
($tmp = $path . ($path ? "." : "") . $type))) ==
substr($tmp, 0, min(strlen($base), strlen($tmp))))
{
$this->_reader->setOffset($offset);
if (@fopen($filename = "ISO14496/Box/" . strtoupper($type) . ".php",
"r", true) !== false)
require_once($filename);
if (class_exists($classname = "ISO14496_Box_" . strtoupper($type)))
$box = new $classname($this->_reader, $this->_options);
else
$box = new $defaultclassname($this->_reader, $this->_options);
$box->setParent($this);
if (!isset($this->_boxes[$box->getType()]))
$this->_boxes[$box->getType()] = array();
$this->_boxes[$box->getType()][] = $box;
}
$this->_reader->setOffset($offset + $size);
}
array_pop(self::$_path);
}
/**
* Reads and constructs the boxes found within this box.
*
* @todo Does not parse iTunes internal ---- boxes.
*/
protected final function constructBoxes($defaultclassname = 'Zend_Media_Iso14496_Box')
{
$base = $this->getOption('base', '');
if ($this->getType() != 'file') {
self::$_path[] = $this->getType();
}
$path = implode(self::$_path, '.');
while (true) {
$offset = $this->_reader->getOffset();
if ($offset >= $this->_offset + $this->_size) {
break;
}
$size = $this->_reader->readUInt32BE();
$type = rtrim($this->_reader->read(4), ' ');
if ($size == 1) {
$size = $this->_reader->readInt64BE();
}
if ($size == 0) {
$size = $this->_reader->getSize() - $offset;
}
if (preg_match("/^©?[a-z0-9]{3,4}\$/i", $type) && substr($base, 0, min(strlen($base), strlen($tmp = $path . ($path ? '.' : '') . $type))) == substr($tmp, 0, min(strlen($base), strlen($tmp)))) {
$this->_reader->setOffset($offset);
if (@fopen($filename = 'Zend/Media/Iso14496/Box/' . ucfirst($type) . '.php', 'r', true) !== false) {
require_once $filename;
}
if (class_exists($classname = 'Zend_Media_Iso14496_Box_' . ucfirst($type))) {
$box = new $classname($this->_reader, $this->_options);
} else {
$box = new $defaultclassname($this->_reader, $this->_options);
}
$box->setParent($this);
if (!isset($this->_boxes[$box->getType()])) {
$this->_boxes[$box->getType()] = array();
}
$this->_boxes[$box->getType()][] = $box;
}
$this->_reader->setOffset($offset + $size);
}
array_pop(self::$_path);
}
/**
* Returns the recognized MIME type/description of the given file. The type
* is determined by the content using magic bytes characteristic for the
* particular file type.
*
* If the type could not be found, the function returns the default value, or
* <var>false</var>.
*
* @param string $filename The file path whose type to determine.
* @param string $default The default value.
* @return string|false
*/
public function getType($filename, $default = false)
{
$reader = new Reader($filename);
$parentOffset = 0;
foreach (preg_split("/^/m", $this->_magic) as $line) {
$chunks = array();
if (!preg_match("/^(?P<Dependant>>?)(?P<Byte>\d+)\s+(?P<MatchType>\S+)" .
"\s+(?P<MatchData>\S+)(?:\s+(?P<MIMEType>[a-z]+\/[a-z-" .
"0-9]+)?(?:\s+(?P<Description>.+))?)?$/", $line, $chunks))
continue;
if ($chunks["Dependant"]) {
$reader->setOffset($parentOffset);
$reader->skip($chunks["Byte"]);
} else
$reader->setOffset($parentOffset = $chunks["Byte"]);
$matchType = strtolower($chunks["MatchType"]);
$matchData = preg_replace
(array("/\\\\ /", "/\\\\\\\\/", "/\\\\([0-7]{1,3})/e",
"/\\\\x([0-9A-Fa-f]{1,2})/e", "/0x([0-9A-Fa-f]+)/e"),
array(" ", "\\\\", "pack(\"H*\", base_convert(\"$1\", 8, 16));",
"pack(\"H*\", \"$1\");", "hexdec(\"$1\");"),
$chunks["MatchData"]);
switch ($matchType) {
case "byte": // single character
$data = $reader->readInt8();
break;
case "short": // machine-order 16-bit integer
$data = $reader->readInt16();
break;
case "long": // machine-order 32-bit integer
$data = $reader->readInt32();
break;
case "string": // arbitrary-length string
$data = $reader->readString8(strlen($matchData));
break;
case "date": // long integer date (seconds since Unix epoch/1970)
$data = $reader->readInt64BE();
break;
case "beshort": // big-endian 16-bit integer
$data = $reader->readUInt16BE();
break;
case "belong": // big-endian 32-bit integer
case "bedate": // big-endian 32-bit integer date
$data = $reader->readUInt32BE();
break;
case "leshort": // little-endian 16-bit integer
$data = $reader->readUInt16LE();
break;
case "lelong": // little-endian 32-bit integer
case "ledate": // little-endian 32-bit integer date
$data = $reader->readUInt32LE();
break;
default:
$data = null;
break;
}
if (strcmp($data, $matchData) == 0) {
if (!empty($chunks["MIMEType"]))
return $chunks["MIMEType"];
if (!empty($chunks["Description"]))
return $chunks["Description"];
}
}
return $default;
}
