function __construct($tmp_filename_or_string = "", &$tmp_p = "")
{
parent::__construct($this);
$this->boxInfo->type = "ROOT";
if (is_resource($tmp_p)) {
$this->_fromFile($tmp_p);
} else {
if (strlen($tmp_filename_or_string) < 300) {
$this->_fromFile(fopen($tmp_filename_or_string, "r"));
} else {
$this->_fromString($tmp_filename_or_string);
}
}
}
public function read()
{
if ($this->boxInfo->type != "ROOT") {
$this->boxInfo->position = ftell($this->mp4->readP);
$this->boxInfo->size = pReadInt32($this->mp4->readP);
$this->boxInfo->type = fread($this->mp4->readP, 4);
if ($this->boxInfo->size == 1) {
$this->boxInfo->headerLength = 16;
$this->boxInfo->size = pReadInt64($this->mp4->readP);
} else {
$this->boxInfo->headerLength = 8;
}
}
if ($this->isContainer()) {
if (MP4_DEBUG) {
$string_representation = $this->toString();
if ($string_representation != "") {
echo str_repeat(" ", $this->boxInfo->depth * 4) . $string_representation . "<br>";
}
}
$i = 0;
while ($this->_keepReadingChildren() && $i++ < 10) {
$pos = ftell($this->mp4->readP);
fseek($this->mp4->readP, $pos + 4);
$next_type = fread($this->mp4->readP, 4);
fseek($this->mp4->readP, $pos);
switch ($next_type) {
case "stco":
case "co64":
$child = new Mp4Box_stco($this->mp4, $this->boxInfo->depth + 1);
break;
case "ctts":
$child = new Mp4Box_ctts($this->mp4, $this->boxInfo->depth + 1);
break;
case "mdhd":
$child = new Mp4Box_mdhd($this->mp4, $this->boxInfo->depth + 1);
break;
case "mvhd":
$child = new Mp4Box_mvhd($this->mp4, $this->boxInfo->depth + 1);
break;
case "stsd":
$child = new Mp4Box_stsd($this->mp4, $this->boxInfo->depth + 1);
break;
case "stss":
$child = new Mp4Box_stss($this->mp4, $this->boxInfo->depth + 1);
break;
case "stsz":
$child = new Mp4Box_stsz($this->mp4, $this->boxInfo->depth + 1);
break;
case "tkhd":
$child = new Mp4Box_tkhd($this->mp4, $this->boxInfo->depth + 1);
break;
case "trak":
$child = new Mp4Box_trak($this->mp4, $this->boxInfo->depth + 1);
break;
case "stsc":
$child = new Mp4Box_stsc($this->mp4, $this->boxInfo->depth + 1);
break;
case "stts":
$child = new Mp4Box_stts($this->mp4, $this->boxInfo->depth + 1);
break;
case "mdat":
$child = new Mp4Box_mdat($this->mp4, $this->boxInfo->depth + 1);
break;
default:
$child = new Mp4AbstractBox($this->mp4, $this->boxInfo->depth + 1);
break;
}
$child->parent = $this;
$child->read();
$this->children[] = $child;
}
} else {
$this->readContent();
fseek($this->mp4->readP, $this->boxInfo->position + $this->boxInfo->size);
if (MP4_DEBUG) {
$string_representation = $this->toString();
if ($string_representation != "") {
echo str_repeat(" ", $this->boxInfo->depth * 4) . $string_representation . " (" . $this->boxInfo->size . ")<br>";
}
}
}
}
