/** * 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']); }
/** * Create an MP4Info_Box object from data * * @author Tommy Lacroix <*****@*****.**> * @param int $totalSize * @param int $boxType * @param file|string $f * @param MP4Info_Box|false $parent * @return MP4Info_Box * @access public * @static */ public static function factory($totalSize, $boxType, $f, $parent = false) { if (MP4Info_Box_Container::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_Container($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_ftyp::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_ftyp($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_uuid::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_uuid($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_hdlr::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_hdlr($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_mvhd::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_mvhd($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_tkhd::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_tkhd($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_mdhd::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_mdhd($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_meta::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_meta($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_stsd::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_stsd($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_ilst::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_ilst($totalSize, $boxType, $f, $parent); } else { if (MP4Info_Box_ilst_sub::isCompatible($boxType, $parent)) { $box = new MP4Info_Box_ilst_sub($totalSize, $boxType, $f, $parent); } else { // Debug... print '0x' . dechex($boxType) . '-' . pack('N', $boxType); if ($parent !== false) { print ' in ' . $parent->getBoxTypeStr(); } else { print ' in root'; } die; //$box = new MP4Info_Box($totalSize, $boxType, $f, $parent); } } } } } } } } } } } // Return box return $box; }