function parse($swfdata)
{
$reader = new IO_Bit();
$reader->input($swfdata);
$this->_swfdata = $swfdata;
/* SWF Header */
$this->_headers['Signature'] = $reader->getData(3);
$this->_headers['Version'] = $reader->getUI8();
$this->_headers['FileLength'] = $reader->getUI32LE();
if ($this->_headers['Signature'][0] == 'C') {
// CWS の場合、FileLength の後ろが zlib 圧縮されている
$uncompressed_data = gzuncompress(substr($swfdata, 8));
if ($uncompressed_data === false) {
return false;
}
list($byte_offset, $dummy) = $reader->getOffset();
$reader->setOffset(0, 0);
$swfdata = $reader->getData($byte_offset) . $uncompressed_data;
$reader = new IO_Bit();
$reader->input($swfdata);
$this->_swfdata = $swfdata;
$reader->setOffset($byte_offset, 0);
}
/* SWF Movie Header */
$this->_headers['FrameSize'] = IO_SWF_Type_RECT::parse($reader);
$reader->byteAlign();
$this->_headers['FrameRate'] = $reader->getUI16LE();
$this->_headers['FrameCount'] = $reader->getUI16LE();
list($this->_header_size, $dummy) = $reader->getOffset();
/* SWF Tags */
while (true) {
$swfInfo = array('Version' => $this->_headers['Version']);
$tag = new IO_SWF_Tag($swfInfo);
$tag->parse($reader);
$this->_tags[] = $tag;
if ($tag->code == 0) {
// END Tag
break;
}
}
return true;
}
function insertAction($sprite_id, $frame, $pos, $action)
{
if ($sprite_id == 0) {
$tags =& $this->_tags;
} else {
$sprite = $this->findSprite($sprite_id);
if (!$sprite) {
return null;
}
$tags =& $sprite->tag->_controlTags;
}
$action_tag = $this->findActionTagInTags($frame, $tags);
if (!$action_tag) {
if ($pos > 1) {
// 1 origin
return null;
}
$currentFrame = 0;
$found = false;
foreach ($tags as $tagidx => $tag) {
if ($tag->code == 1) {
$currentFrame++;
}
if ($currentFrame >= $frame) {
$found = true;
break;
}
}
if ($found === false) {
return null;
}
$action_tag = new IO_SWF_Tag($tags[0]->swfInfo);
$action_tag->code = 12;
// DoAction
$action_tag->content = '';
$action_tag->parseTagContent();
$action_tag->content = null;
array_splice($tags, $tagidx, 0, array($action_tag));
}
$action_tag->tag->insertAction($pos, $action);
return true;
}
