1<?php
2/////////////////////////////////////////////////////////////////
3/// getID3() by James Heinrich <info@getid3.org>               //
4//  available at https://github.com/JamesHeinrich/getID3       //
5//            or https://www.getid3.org                        //
6//            or http://getid3.sourceforge.net                 //
7//  see readme.txt for more details                            //
8/////////////////////////////////////////////////////////////////
9//                                                             //
10// module.audio.bink.php                                       //
11// module for analyzing Bink or Smacker audio-video files      //
12// dependencies: NONE                                          //
13//                                                            ///
14/////////////////////////////////////////////////////////////////
15
16if (!defined('GETID3_INCLUDEPATH')) { // prevent path-exposing attacks that access modules directly on public webservers
17	exit;
18}
19
20class getid3_bink extends getid3_handler
21{
22	/**
23	 * @return bool
24	 */
25	public function Analyze() {
26		$info = &$this->getid3->info;
27
28		$this->error('Bink / Smacker files not properly processed by this version of getID3() ['.$this->getid3->version().']');
29
30		$this->fseek($info['avdataoffset']);
31		$fileTypeID = $this->fread(3);
32		switch ($fileTypeID) {
33			case 'BIK':
34				return $this->ParseBink();
35
36			case 'SMK':
37				return $this->ParseSmacker();
38
39			default:
40				$this->error('Expecting "BIK" or "SMK" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($fileTypeID).'"');
41				return false;
42		}
43	}
44
45	/**
46	 * @return bool
47	 */
48	public function ParseBink() {
49		$info = &$this->getid3->info;
50		$info['fileformat']          = 'bink';
51		$info['video']['dataformat'] = 'bink';
52
53		$fileData = 'BIK'.$this->fread(13);
54
55		$info['bink']['data_size']   = getid3_lib::LittleEndian2Int(substr($fileData, 4, 4));
56		$info['bink']['frame_count'] = getid3_lib::LittleEndian2Int(substr($fileData, 8, 2));
57
58		if (($info['avdataend'] - $info['avdataoffset']) != ($info['bink']['data_size'] + 8)) {
59			$this->error('Probably truncated file: expecting '.$info['bink']['data_size'].' bytes, found '.($info['avdataend'] - $info['avdataoffset']));
60		}
61
62		return true;
63	}
64
65	/**
66	 * @return bool
67	 */
68	public function ParseSmacker() {
69		$info = &$this->getid3->info;
70		$info['fileformat']          = 'smacker';
71		$info['video']['dataformat'] = 'smacker';
72
73		return true;
74	}
75
76}
77