/**
* Constructor
*
* @author Tommy Lacroix <*****@*****.**>
* @param int $totalSize
* @param int $boxType
* @param file|string $data
* @param MP4Info_Box $parent
* @return MP4Info_Box_mvhd
* @access public
* @throws MP4Info_Exception
*/
public function __construct($totalSize, $boxType, $data, $parent)
{
if (!self::isCompatible($boxType)) {
throw new Exception('This box isn\'t "mvhd"');
}
// Get timezone
if (self::$timezone === false) {
self::$timezone = date('Z');
}
// Call ancestor's constructor
parent::__construct($totalSize, $boxType, '', $parent);
// Unpack
$ar = unpack('Cversion/C3flags', $data);
if ($ar['version'] == 0) {
// 32 bit
$ar2 = unpack('Nctime/Nmtime/NtimeScale/Nduration/Nrate/nvolume/ndummy/N2dummy2/N9matrix/N3dummy3/NnextTrack', substr($data, 4));
} else {
if ($ar['version'] == 1) {
// 64 bit
$ar2 = unpack('N2ctime/N2mtime/NtimeScale/N2duration/Nrate/nvolume/ndummy/N2dummy2/N9matrix/N3dummy3/NnextTrack', substr($data, 4));
} else {
throw new Exception('Unhandled version: ' . $ar['version']);
}
}
// Save
$this->version = $ar['version'];
$this->flags = $ar['flags1'] * 65536 + $ar['flags1'] * 256 + $ar['flags1'] * 1;
$this->ctime = date('r', (isset($ar2['ctime']) ? $ar2['ctime'] : $ar2['ctime1']) - 2082826800 - self::$timezone);
$this->mtime = date('r', (isset($ar2['mtime']) ? $ar2['mtime'] : $ar2['mtime1']) - 2082826800 - self::$timezone);
$this->timeScale = $ar2['timeScale'];
$this->duration = isset($ar2['duration']) ? $ar2['duration'] : $ar2['duration1'];
$this->rate = MP4Info_Helper::fromFixed16($ar2['rate']);
$this->volume = MP4Info_Helper::fromFixed8($ar2['volume']);
}
/**
* Constructor
*
* @author Tommy Lacroix <*****@*****.**>
* @param int $totalSize
* @param int $boxType
* @param file|string $data
* @param MP4Info_Box $parent
* @return MP4Info_Box_tkhd
* @access public
* @throws MP4Info_Exception
*/
public function __construct($totalSize, $boxType, $data, $parent = false)
{
if (!self::isCompatible($boxType, $parent)) {
throw new Exception('This box isn\'t "tkhd"');
}
// Get timezone
if (self::$timezone === false) {
self::$timezone = date('Z');
}
// Call ancestor's constructor
parent::__construct($totalSize, $boxType, '', $parent);
// Get data
$data = self::getDataFrom3rd($data, $totalSize);
// Unpack
$ar = unpack('Cversion/C3flags', $data);
if ($ar['version'] == 0) {
// 32 bit
$ar2 = unpack('Nctime/Nmtime/NtrackId/Ndummy/Nduration/N2dummy1/nlayer/naltGroup/nvolume/ndummy2/N9matrix/Nwidth/Nheight', substr($data, 4));
} else {
if ($ar['version'] == 1) {
// 64 bit
$ar2 = unpack('N2ctime/N2mtime/NtrackId/Ndummy/N2duration/N2dummy1/nlayer/naltGroup/nvolume/ndummy2/N9matrix/Nwidth/Nheight', substr($data, 4));
} else {
throw new Exception('Unhandled version: ' . $ar['version']);
}
}
// Save
$this->version = $ar['version'];
$this->flags = $ar['flags1'] * 65536 + $ar['flags1'] * 256 + $ar['flags1'] * 1;
$this->ctime = date('r', (isset($ar2['ctime']) ? $ar2['ctime'] : $ar2['ctime1']) - 2082826800 - self::$timezone);
$this->mtime = date('r', (isset($ar2['mtime']) ? $ar2['mtime'] : $ar2['mtime1']) - 2082826800 - self::$timezone);
$this->trackId = $ar2['trackId'];
$this->duration = isset($ar2['duration']) ? $ar2['duration'] : $ar2['duration1'];
$this->layer = $ar2['layer'] > 32767 ? $ar2['layer'] - 65536 : $ar2['layer'];
$this->volume = MP4Info_Helper::fromFixed8($ar2['volume']);
$this->width = MP4Info_Helper::fromFixed16($ar2['width']);
$this->height = MP4Info_Helper::fromFixed16($ar2['height']);
}
