/**
* Process the raw data from a binary stream
*
* @return void
*/
public function processData(Woops_Swf_Binary_Stream $stream)
{
// Gets the SWF file signature
$signature = $stream->read(3);
// Checks the SWF file signature
if ($signature === 'FWS') {
// No compression
$this->_isCompressed = false;
} elseif ($signature === 'CWS') {
// SWF file data is compressed
$this->_isCompressed = true;
} else {
// Error - Invalid SWF signature
throw new Woops_Swf_Header_Exception('Invalid SWF file signature (' . $signature . ')', Woops_Swf_Header_Exception::EXCEPTION_BAD_SIGNATURE);
}
// Gets the SWF version
$this->_version = $stream->unsignedChar();
// Do not process the file size
$stream->seek(4, Woops_Swf_Binary_Stream::SEEK_CUR);
// Checks if we have to uncompress the SWF data
if ($this->_isCompressed) {
// Uncompress the SWF data
$stream->uncompressData();
}
// Processes the frame size rectangle
$this->_frameSize->processData($stream);
// Gets the frame rate
$this->_frameRate = $stream->littleEndianFixedPoint(8, 8);
// Gets the number of frames
$this->_frameCount = $stream->littleEndianUnsignedShort();
}
/**
* Process the raw data from a binary stream
*
* @return void
*/
public function processData(Woops_Swf_Binary_Stream $stream)
{
// Gets the sprite ID and the frame count
$this->_spriteId = $stream->littleEndianUnsignedShort();
$this->_frameCount = $stream->littleEndianUnsignedShort();
// Resets the tag array
$this->_tags = array();
// Process the tags
while (!$stream->endOfStream()) {
// Gets thge tag record header
$tagHeader = $stream->littleEndianUnsignedShort();
// Gets the tag type
$tagType = $tagHeader >> 6;
// Gets the tag length
$tagLength = $tagHeader & 0x3f;
// Checks for a 32bit length
if ($tagLength === 0x3f) {
// Tag is long
$tagLength = $stream->littleEndianUnsignedLong();
}
// Creates the tag
$tag = $this->newTag($tagType);
// Creates a binary stream with the tag data
$tagData = new Woops_Swf_Binary_Stream($stream->read($tagLength));
// Processes the tag data
$tag->processData($tagData);
}
}
