getid3_asf::ASF_WMpicture

	 *
	 * @return array
	 */
	public function ASF_WMpicture(&$data) {
		//typedef struct _WMPicture{
		//  LPWSTR  pwszMIMEType;
		//  BYTE  bPictureType;
		//  LPWSTR  pwszDescription;
		//  DWORD  dwDataLen;
		//  BYTE*  pbData;
		//} WM_PICTURE;

		$WMpicture = array();

		$offset = 0;
		$WMpicture['image_type_id'] = getid3_lib::LittleEndian2Int(substr($data, $offset, 1));
		$offset += 1;
		$WMpicture['image_type']    = self::WMpictureTypeLookup($WMpicture['image_type_id']);
		$WMpicture['image_size']    = getid3_lib::LittleEndian2Int(substr($data, $offset, 4));
		$offset += 4;

		$WMpicture['image_mime'] = '';
		do {
			$next_byte_pair = substr($data, $offset, 2);
			$offset += 2;
			$WMpicture['image_mime'] .= $next_byte_pair;
		} while ($next_byte_pair !== "\x00\x00");

		$WMpicture['image_description'] = '';
		do {
			$next_byte_pair = substr($data, $offset, 2);
			$offset += 2;
			$WMpicture['image_description'] .= $next_byte_pair;
		} while ($next_byte_pair !== "\x00\x00");

		$WMpicture['dataoffset'] = $offset;
		$WMpicture['data'] = substr($data, $offset);

		$imageinfo = array();
		$WMpicture['image_mime'] = '';
		$imagechunkcheck = getid3_lib::GetDataImageSize($WMpicture['data'], $imageinfo);
		unset($imageinfo);
		if (!empty($imagechunkcheck)) {
			$WMpicture['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
		}
		if (!isset($this->getid3->info['asf']['comments']['picture'])) {
			$this->getid3->info['asf']['comments']['picture'] = array();
		}
		$this->getid3->info['asf']['comments']['picture'][] = array('data'=>$WMpicture['data'], 'image_mime'=>$WMpicture['image_mime']);