ILIAS  eassessment Revision 61809
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module.graphic.jpg.php
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1 <?php
4 // available at http://getid3.sourceforge.net //
5 // or http://www.getid3.org //
7 // See readme.txt for more details //
9 // //
10 // module.graphic.jpg.php //
11 // module for analyzing JPEG Image files //
12 // dependencies: NONE //
13 // ///
15 
16 
17 class getid3_jpg
18 {
19 
20 
21  function getid3_jpg(&$fd, &$ThisFileInfo) {
22  $ThisFileInfo['fileformat'] = 'jpg';
23  $ThisFileInfo['video']['dataformat'] = 'jpg';
24  $ThisFileInfo['video']['lossless'] = false;
25  $ThisFileInfo['video']['bits_per_sample'] = 24;
26  $ThisFileInfo['video']['pixel_aspect_ratio'] = (float) 1;
27 
28  fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
29 
30  list($width, $height, $type) = getid3_lib::GetDataImageSize(fread($fd, $ThisFileInfo['filesize']));
31  if ($type == 2) {
32 
33  $ThisFileInfo['video']['resolution_x'] = $width;
34  $ThisFileInfo['video']['resolution_y'] = $height;
35 
36  if (version_compare(phpversion(), '4.2.0', '>=')) {
37 
38  if (function_exists('exif_read_data')) {
39 
40  ob_start();
41  $ThisFileInfo['jpg']['exif'] = exif_read_data($ThisFileInfo['filenamepath'], '', true, false);
42  $errors = ob_get_contents();
43  if ($errors) {
44  $ThisFileInfo['error'][] = strip_tags($errors);
45  unset($ThisFileInfo['jpg']['exif']);
46  }
47  ob_end_clean();
48 
49  } else {
50 
51  $ThisFileInfo['warning'][] = 'EXIF parsing only available when '.(GETID3_OS_ISWINDOWS ? 'php_exif.dll enabled' : 'compiled with --enable-exif');
52 
53  }
54 
55  } else {
56 
57  $ThisFileInfo['warning'][] = 'EXIF parsing only available in PHP v4.2.0 and higher compiled with --enable-exif (or php_exif.dll enabled for Windows). You are using PHP v'.phpversion();
58 
59  }
60 
61  return true;
62 
63  }
64 
65  unset($ThisFileInfo['fileformat']);
66  return false;
67  }
68 
69 }
70 
71 
72 ?>