ILIAS  eassessment Revision 61809
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getid3.php
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1 <?php
4 // available at http://getid3.sourceforge.net //
5 // or http://www.getid3.org //
7 // //
8 // Please see readme.txt for more information //
9 // ///
11 
12 // Defines
13 define('GETID3_VERSION', '1.7.7');
14 define('GETID3_FREAD_BUFFER_SIZE', 16384); // read buffer size in bytes
15 
16 
17 
18 class getID3
19 {
20  // public: Settings
21  var $encoding = 'ISO-8859-1'; // CASE SENSITIVE! - i.e. (must be supported by iconv())
22  // Examples: ISO-8859-1 UTF-8 UTF-16 UTF-16BE
23 
24  var $encoding_id3v1 = 'ISO-8859-1'; // Should always be 'ISO-8859-1', but some tags may be written in other encodings such as 'EUC-CN'
25 
26  var $tempdir = '*'; // default '*' should use system temp dir
27 
28  // public: Optional tag checks - disable for speed.
29  var $option_tag_id3v1 = true; // Read and process ID3v1 tags
30  var $option_tag_id3v2 = true; // Read and process ID3v2 tags
31  var $option_tag_lyrics3 = true; // Read and process Lyrics3 tags
32  var $option_tag_apetag = true; // Read and process APE tags
33  var $option_tags_process = true; // Copy tags to root key 'tags' and encode to $this->encoding
34  var $option_tags_html = true; // Copy tags to root key 'tags_html' properly translated from various encodings to HTML entities
35 
36  // public: Optional tag/comment calucations
37  var $option_extra_info = true; // Calculate additional info such as bitrate, channelmode etc
38 
39  // public: Optional calculations
40  var $option_md5_data = false; // Get MD5 sum of data part - slow
41  var $option_md5_data_source = false; // Use MD5 of source file if availble - only FLAC and OptimFROG
42  var $option_sha1_data = false; // Get SHA1 sum of data part - slow
43  var $option_max_2gb_check = true; // Check whether file is larger than 2 Gb and thus not supported by PHP
44 
45  // private
46  var $filename;
47 
48 
49  // public: constructor
50  function getID3()
51  {
52 
53  $this->startup_error = '';
54  $this->startup_warning = '';
55 
56  // Check for PHP version >= 4.1.0
57  if (phpversion() < '4.1.0') {
58  $this->startup_error .= 'getID3() requires PHP v4.1.0 or higher - you are running v'.phpversion();
59  }
60 
61  // Check memory
62  $memory_limit = ini_get('memory_limit');
63  if (eregi('([0-9]+)M', $memory_limit, $matches)) {
64  // could be stored as "16M" rather than 16777216 for example
65  $memory_limit = $matches[1] * 1048576;
66  }
67  if ($memory_limit <= 0) {
68  // memory limits probably disabled
69  } elseif ($memory_limit <= 3145728) {
70  $this->startup_error .= 'PHP has less than 3MB available memory and will very likely run out. Increase memory_limit in php.ini';
71  } elseif ($memory_limit <= 12582912) {
72  $this->startup_warning .= 'PHP has less than 12MB available memory and might run out if all modules are loaded. Increase memory_limit in php.ini';
73  }
74 
75  // Check safe_mode off
76  if ((bool) ini_get('safe_mode')) {
77  $this->warning('WARNING: Safe mode is on, shorten support disabled, md5data/sha1data for ogg vorbis disabled, ogg vorbos/flac tag writing disabled.');
78  }
79 
80 
81  // define a constant rather than looking up every time it is needed
82  if (!defined('GETID3_OS_ISWINDOWS')) {
83  if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN') {
84  define('GETID3_OS_ISWINDOWS', true);
85  } else {
86  define('GETID3_OS_ISWINDOWS', false);
87  }
88  }
89 
90  // Get base path of getID3() - ONCE
91  if (!defined('GETID3_INCLUDEPATH')) {
92  foreach (get_included_files() as $key => $val) {
93  if (basename($val) == 'getid3.php') {
94  define('GETID3_INCLUDEPATH', dirname($val).DIRECTORY_SEPARATOR);
95  break;
96  }
97  }
98  }
99 
100  // Load support library
101  if (!include_once(GETID3_INCLUDEPATH.'getid3.lib.php')) {
102  $this->startup_error .= 'getid3.lib.php is missing or corrupt';
103  }
104 
105 
106  // Needed for Windows only:
107  // Define locations of helper applications for Shorten, VorbisComment, MetaFLAC
108  // as well as other helper functions such as head, tail, md5sum, etc
109  // IMPORTANT: This path cannot have spaces in it. If neccesary, use the 8dot3 equivalent
110  // ie for "C:/Program Files/Apache/" put "C:/PROGRA~1/APACHE/"
111  // IMPORTANT: This path must include the trailing slash
112  if (GETID3_OS_ISWINDOWS && !defined('GETID3_HELPERAPPSDIR')) {
113  $helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path
114 
115  if (!is_dir($helperappsdir)) {
116 
117  $this->startup_error .= '"'.$helperappsdir.'" cannot be defined as GETID3_HELPERAPPSDIR because it does not exist';
118 
119  } elseif (strpos(realpath($helperappsdir), ' ') !== false) {
120 
121  $DirPieces = explode(DIRECTORY_SEPARATOR, realpath($helperappsdir));
122  $DirPieces8 = $DirPieces;
123 
124  $CLIdir = $DirPieces[0].' && cd \\';
125  for ($i = 1; $i < count($DirPieces); $i++) {
126  if (strpos($DirPieces[$i], ' ') === false) {
127  $CLIdir .= ' && cd '.$DirPieces[$i];
128  } else {
129  ob_start();
130  system($CLIdir.' && dir /ad /x');
131  $subdirsraw = explode("\n", ob_get_contents());
132  ob_end_clean();
133  foreach ($subdirsraw as $dummy => $line) {
134  if (eregi('^[0-9]{4}/[0-9]{2}/[0-9]{2} [0-9]{2}:[0-9]{2} [AP]M <DIR> ([^ ]{8}) '.preg_quote($DirPieces[$i]).'$', trim($line), $matches)) {
135  $CLIdir .= ' && cd '.$matches[1];
136  break;
137  }
138  }
139  $DirPieces8[$i] = $matches[1];
140  }
141  }
142  $helperappsdir = implode(DIRECTORY_SEPARATOR, $DirPieces8);
143 
144  }
145  define('GETID3_HELPERAPPSDIR', realpath($helperappsdir).DIRECTORY_SEPARATOR);
146 
147  }
148 
149  }
150 
151 
152  // public: setOption
153  function setOption($optArray) {
154  if (!is_array($optArray) || empty($optArray)) {
155  return false;
156  }
157  foreach ($optArray as $opt => $val) {
158  if (isset($this, $opt) === false) {
159  continue;
160  }
161  $this->$opt = $val;
162  }
163  return true;
164  }
165 
166 
167  // public: analyze file - replaces GetAllFileInfo() and GetTagOnly()
168  function analyze($filename) {
169 
170  if (!empty($this->startup_error)) {
171  return $this->error($this->startup_error);
172  }
173  if (!empty($this->startup_warning)) {
174  $this->warning($this->startup_warning);
175  }
176 
177  // init result array and set parameters
178  $this->info = array();
179  $this->info['GETID3_VERSION'] = GETID3_VERSION;
180 
181  // Check encoding/iconv support
182  if (!function_exists('iconv') && !in_array($this->encoding, array('ISO-8859-1', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'UTF-16'))) {
183  $errormessage = 'iconv() support is needed for encodings other than ISO-8859-1, UTF-8, UTF-16LE, UTF16-BE, UTF-16. ';
184  if (GETID3_OS_ISWINDOWS) {
185  $errormessage .= 'PHP does not have iconv() support. Please enable php_iconv.dll in php.ini, and copy iconv.dll from c:/php/dlls to c:/windows/system32';
186  } else {
187  $errormessage .= 'PHP is not compiled with iconv() support. Please recompile with the --with-iconv switch';
188  }
189  return $this->error($errormessage);
190  }
191 
192  // Disable magic_quotes_runtime, if neccesary
193  $old_magic_quotes_runtime = get_magic_quotes_runtime(); // store current setting of magic_quotes_runtime
194  if ($old_magic_quotes_runtime) {
195  set_magic_quotes_runtime(0); // turn off magic_quotes_runtime
196  if (get_magic_quotes_runtime()) {
197  return $this->error('Could not disable magic_quotes_runtime - getID3() cannot work properly with this setting enabled');
198  }
199  }
200 
201  // remote files not supported
202  if (preg_match('/^(ht|f)tp:\/\//', $filename)) {
203  return $this->error('Remote files are not supported in this version of getID3() - please copy the file locally first');
204  }
205 
206  // open local file
207  if (!$fp = @fopen($filename, 'rb')) {
208  return $this->error('Could not open file "'.$filename.'"');
209  }
210 
211  // set parameters
212  $this->info['filesize'] = filesize($filename);
213 
214  // option_max_2gb_check
215  if ($this->option_max_2gb_check) {
216  // PHP doesn't support integers larger than 31-bit (~2GB)
217  // filesize() simply returns (filesize % (pow(2, 32)), no matter the actual filesize
218  // ftell() returns 0 if seeking to the end is beyond the range of unsigned integer
219  fseek($fp, 0, SEEK_END);
220  if ((($this->info['filesize'] != 0) && (ftell($fp) == 0)) ||
221  ($this->info['filesize'] < 0) ||
222  (ftell($fp) < 0)) {
223  unset($this->info['filesize']);
224  fclose($fp);
225  return $this->error('File is most likely larger than 2GB and is not supported by PHP');
226  }
227  }
228 
229  // set more parameters
230  $this->info['avdataoffset'] = 0;
231  $this->info['avdataend'] = $this->info['filesize'];
232  $this->info['fileformat'] = ''; // filled in later
233  $this->info['audio']['dataformat'] = ''; // filled in later, unset if not used
234  $this->info['video']['dataformat'] = ''; // filled in later, unset if not used
235  $this->info['tags'] = array(); // filled in later, unset if not used
236  $this->info['error'] = array(); // filled in later, unset if not used
237  $this->info['warning'] = array(); // filled in later, unset if not used
238  $this->info['comments'] = array(); // filled in later, unset if not used
239  $this->info['encoding'] = $this->encoding; // required by id3v2 and iso modules - can be unset at the end if desired
240 
241  // set redundant parameters - might be needed in some include file
242  $this->info['filename'] = basename($filename);
243  $this->info['filepath'] = str_replace('\\', '/', realpath(dirname($filename)));
244  $this->info['filenamepath'] = $this->info['filepath'].'/'.$this->info['filename'];
245 
246 
247  // handle ID3v2 tag - done first - already at beginning of file
248  // ID3v2 detection (even if not parsing) is always done otherwise fileformat is much harder to detect
249  if ($this->option_tag_id3v2) {
250 
251  $GETID3_ERRORARRAY = &$this->info['warning'];
252  if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v2.php', __FILE__, false)) {
253  $tag = new getid3_id3v2($fp, $this->info);
254  }
255 
256  } else {
257 
258  fseek($fp, 0, SEEK_SET);
259  $header = fread($fp, 10);
260  if (substr($header, 0, 3) == 'ID3') {
261  $this->info['id3v2']['header'] = true;
262  $this->info['id3v2']['majorversion'] = ord($header{3});
263  $this->info['id3v2']['minorversion'] = ord($header{4});
264  $this->info['id3v2']['headerlength'] = getid3_lib::BigEndian2Int(substr($header, 6, 4), 1) + 10; // length of ID3v2 tag in 10-byte header doesn't include 10-byte header length
265 
266  $this->info['id3v2']['tag_offset_start'] = 0;
267  $this->info['id3v2']['tag_offset_end'] = $this->info['id3v2']['tag_offset_start'] + $this->info['id3v2']['headerlength'];
268  $this->info['avdataoffset'] = $this->info['id3v2']['tag_offset_end'];
269  }
270 
271  }
272 
273 
274  // handle ID3v1 tag
275  if ($this->option_tag_id3v1) {
276  if (!@include_once(GETID3_INCLUDEPATH.'module.tag.id3v1.php')) {
277  return $this->error('module.tag.id3v1.php is missing - you may disable option_tag_id3v1.');
278  }
279  $tag = new getid3_id3v1($fp, $this->info);
280  }
281 
282  // handle APE tag
283  if ($this->option_tag_apetag) {
284  if (!@include_once(GETID3_INCLUDEPATH.'module.tag.apetag.php')) {
285  return $this->error('module.tag.apetag.php is missing - you may disable option_tag_apetag.');
286  }
287  $tag = new getid3_apetag($fp, $this->info);
288  }
289 
290  // handle lyrics3 tag
291  if ($this->option_tag_lyrics3) {
292  if (!@include_once(GETID3_INCLUDEPATH.'module.tag.lyrics3.php')) {
293  return $this->error('module.tag.lyrics3.php is missing - you may disable option_tag_lyrics3.');
294  }
295  $tag = new getid3_lyrics3($fp, $this->info);
296  }
297 
298  // read 32 kb file data
299  fseek($fp, $this->info['avdataoffset'], SEEK_SET);
300  $formattest = fread($fp, 32774);
301 
302  // determine format
303  $determined_format = $this->GetFileFormat($formattest, $filename);
304 
305  // unable to determine file format
306  if (!$determined_format) {
307  fclose($fp);
308  return $this->error('unable to determine file format');
309  }
310 
311  // check for illegal ID3 tags
312  if (isset($determined_format['fail_id3']) && (in_array('id3v1', $this->info['tags']) || in_array('id3v2', $this->info['tags']))) {
313  if ($determined_format['fail_id3'] === 'ERROR') {
314  fclose($fp);
315  return $this->error('ID3 tags not allowed on this file type.');
316  } elseif ($determined_format['fail_id3'] === 'WARNING') {
317  $this->info['warning'][] = 'ID3 tags not allowed on this file type.';
318  }
319  }
320 
321  // check for illegal APE tags
322  if (isset($determined_format['fail_ape']) && in_array('ape', $this->info['tags'])) {
323  if ($determined_format['fail_ape'] === 'ERROR') {
324  fclose($fp);
325  return $this->error('APE tags not allowed on this file type.');
326  } elseif ($determined_format['fail_ape'] === 'WARNING') {
327  $this->info['warning'][] = 'APE tags not allowed on this file type.';
328  }
329  }
330 
331  // set mime type
332  $this->info['mime_type'] = $determined_format['mime_type'];
333 
334  // supported format signature pattern detected, but module deleted
335  if (!file_exists(GETID3_INCLUDEPATH.$determined_format['include'])) {
336  fclose($fp);
337  return $this->error('Format not supported, module, '.$determined_format['include'].', was removed.');
338  }
339 
340  // module requires iconv support
341  if (!function_exists('iconv') && @$determined_format['iconv_req']) {
342  return $this->error('iconv support is required for this module ('.$determined_format['include'].').');
343  }
344 
345  // include module
346  include_once(GETID3_INCLUDEPATH.$determined_format['include']);
347 
348  // instantiate module class
349  $class_name = 'getid3_'.$determined_format['module'];
350  if (!class_exists($class_name)) {
351  return $this->error('Format not supported, module, '.$determined_format['include'].', is corrupt.');
352  }
353  if (isset($determined_format['option'])) {
354  $class = new $class_name($fp, $this->info, $determined_format['option']);
355  } else {
356  $class = new $class_name($fp, $this->info);
357  }
358 
359  // close file
360  fclose($fp);
361 
362  // process all tags - copy to 'tags' and convert charsets
363  if ($this->option_tags_process) {
364  $this->HandleAllTags();
365  }
366 
367  // perform more calculations
368  if ($this->option_extra_info) {
369  $this->ChannelsBitratePlaytimeCalculations();
370  $this->CalculateCompressionRatioVideo();
371  $this->CalculateCompressionRatioAudio();
372  $this->CalculateReplayGain();
373  $this->ProcessAudioStreams();
374  }
375 
376  // get the MD5 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
377  if ($this->option_md5_data) {
378  // do not cald md5_data if md5_data_source is present - set by flac only - future MPC/SV8 too
379  if (!$this->option_md5_data_source || empty($this->info['md5_data_source'])) {
380  $this->getHashdata('md5');
381  }
382  }
383 
384  // get the SHA1 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
385  if ($this->option_sha1_data) {
386  $this->getHashdata('sha1');
387  }
388 
389  // remove undesired keys
390  $this->CleanUp();
391 
392  // restore magic_quotes_runtime setting
393  set_magic_quotes_runtime($old_magic_quotes_runtime);
394 
395  // return info array
396  return $this->info;
397  }
398 
399 
400  // private: error handling
401  function error($message) {
402 
403  $this->CleanUp();
404 
405  $this->info['error'][] = $message;
406  return $this->info;
407  }
408 
409 
410  // private: warning handling
411  function warning($message) {
412  $this->info['warning'][] = $message;
413  return true;
414  }
415 
416 
417  // private: CleanUp
418  function CleanUp() {
419 
420  // remove possible empty keys
421  $AVpossibleEmptyKeys = array('dataformat', 'bits_per_sample', 'encoder_options', 'streams');
422  foreach ($AVpossibleEmptyKeys as $dummy => $key) {
423  if (empty($this->info['audio'][$key]) && isset($this->info['audio'][$key])) {
424  unset($this->info['audio'][$key]);
425  }
426  if (empty($this->info['video'][$key]) && isset($this->info['video'][$key])) {
427  unset($this->info['video'][$key]);
428  }
429  }
430 
431  // remove empty root keys
432  if (!empty($this->info)) {
433  foreach ($this->info as $key => $value) {
434  if (empty($this->info[$key]) && ($this->info[$key] !== 0) && ($this->info[$key] !== '0')) {
435  unset($this->info[$key]);
436  }
437  }
438  }
439 
440  // remove meaningless entries from unknown-format files
441  if (empty($this->info['fileformat'])) {
442  if (isset($this->info['avdataoffset'])) {
443  unset($this->info['avdataoffset']);
444  }
445  if (isset($this->info['avdataend'])) {
446  unset($this->info['avdataend']);
447  }
448  }
449  }
450 
451 
452  // return array containing information about all supported formats
453  function GetFileFormatArray() {
454  static $format_info = array();
455  if (empty($format_info)) {
456  $format_info = array(
457 
458  // Audio formats
459 
460  // AC-3 - audio - Dolby AC-3 / Dolby Digital
461  'ac3' => array(
462  'pattern' => '^\x0B\x77',
463  'group' => 'audio',
464  'module' => 'ac3',
465  'mime_type' => 'audio/ac3',
466  ),
467 
468  // AAC - audio - Advanced Audio Coding (AAC) - ADIF format
469  'adif' => array(
470  'pattern' => '^ADIF',
471  'group' => 'audio',
472  'module' => 'aac',
473  'option' => 'adif',
474  'mime_type' => 'application/octet-stream',
475  'fail_ape' => 'WARNING',
476  ),
477 
478 
479  // AAC - audio - Advanced Audio Coding (AAC) - ADTS format (very similar to MP3)
480  'adts' => array(
481  'pattern' => '^\xFF[\xF0-\xF1\xF8-\xF9]',
482  'group' => 'audio',
483  'module' => 'aac',
484  'option' => 'adts',
485  'mime_type' => 'application/octet-stream',
486  'fail_ape' => 'WARNING',
487  ),
488 
489 
490  // AU - audio - NeXT/Sun AUdio (AU)
491  'au' => array(
492  'pattern' => '^\.snd',
493  'group' => 'audio',
494  'module' => 'au',
495  'mime_type' => 'audio/basic',
496  ),
497 
498  // AVR - audio - Audio Visual Research
499  'avr' => array(
500  'pattern' => '^2BIT',
501  'group' => 'audio',
502  'module' => 'avr',
503  'mime_type' => 'application/octet-stream',
504  ),
505 
506  // BONK - audio - Bonk v0.9+
507  'bonk' => array(
508  'pattern' => '^\x00(BONK|INFO|META| ID3)',
509  'group' => 'audio',
510  'module' => 'bonk',
511  'mime_type' => 'audio/xmms-bonk',
512  ),
513 
514  // FLAC - audio - Free Lossless Audio Codec
515  'flac' => array(
516  'pattern' => '^fLaC',
517  'group' => 'audio',
518  'module' => 'flac',
519  'mime_type' => 'audio/x-flac',
520  ),
521 
522  // LA - audio - Lossless Audio (LA)
523  'la' => array(
524  'pattern' => '^LA0[2-4]',
525  'group' => 'audio',
526  'module' => 'la',
527  'mime_type' => 'application/octet-stream',
528  ),
529 
530  // LPAC - audio - Lossless Predictive Audio Compression (LPAC)
531  'lpac' => array(
532  'pattern' => '^LPAC',
533  'group' => 'audio',
534  'module' => 'lpac',
535  'mime_type' => 'application/octet-stream',
536  ),
537 
538  // MIDI - audio - MIDI (Musical Instrument Digital Interface)
539  'midi' => array(
540  'pattern' => '^MThd',
541  'group' => 'audio',
542  'module' => 'midi',
543  'mime_type' => 'audio/midi',
544  ),
545 
546  // MAC - audio - Monkey's Audio Compressor
547  'mac' => array(
548  'pattern' => '^MAC ',
549  'group' => 'audio',
550  'module' => 'monkey',
551  'mime_type' => 'application/octet-stream',
552  ),
553 
554  // MOD - audio - MODule (assorted sub-formats)
555  'mod' => array(
556  'pattern' => '^.{1080}(M.K.|[5-9]CHN|[1-3][0-9]CH)',
557  'group' => 'audio',
558  'module' => 'mod',
559  'option' => 'mod',
560  'mime_type' => 'audio/mod',
561  ),
562 
563  // MOD - audio - MODule (Impulse Tracker)
564  'it' => array(
565  'pattern' => '^IMPM',
566  'group' => 'audio',
567  'module' => 'mod',
568  'option' => 'it',
569  'mime_type' => 'audio/it',
570  ),
571 
572  // MOD - audio - MODule (eXtended Module, various sub-formats)
573  'xm' => array(
574  'pattern' => '^Extended Module',
575  'group' => 'audio',
576  'module' => 'mod',
577  'option' => 'xm',
578  'mime_type' => 'audio/xm',
579  ),
580 
581  // MOD - audio - MODule (ScreamTracker)
582  's3m' => array(
583  'pattern' => '^.{44}SCRM',
584  'group' => 'audio',
585  'module' => 'mod',
586  'option' => 's3m',
587  'mime_type' => 'audio/s3m',
588  ),
589 
590  // MPC - audio - Musepack / MPEGplus
591  'mpc' => array(
592  'pattern' => '^(MP\+|[\x00\x01\x10\x11\x40\x41\x50\x51\x80\x81\x90\x91\xC0\xC1\xD0\xD1][\x20-37][\x00\x20\x40\x60\x80\xA0\xC0\xE0])',
593  'group' => 'audio',
594  'module' => 'mpc',
595  'mime_type' => 'application/octet-stream',
596  ),
597 
598  // MP3 - audio - MPEG-audio Layer 3 (very similar to AAC-ADTS)
599  'mp3' => array(
600  'pattern' => '^\xFF[\xE2-\xE7\xF2-\xF7\xFA-\xFF][\x00-\xEB]',
601  'group' => 'audio',
602  'module' => 'mp3',
603  'mime_type' => 'audio/mpeg',
604  ),
605 
606  // OFR - audio - OptimFROG
607  'ofr' => array(
608  'pattern' => '^(\*RIFF|OFR)',
609  'group' => 'audio',
610  'module' => 'optimfrog',
611  'mime_type' => 'application/octet-stream',
612  ),
613 
614  // RKAU - audio - RKive AUdio compressor
615  'rkau' => array(
616  'pattern' => '^RKA',
617  'group' => 'audio',
618  'module' => 'rkau',
619  'mime_type' => 'application/octet-stream',
620  ),
621 
622  // SHN - audio - Shorten
623  'shn' => array(
624  'pattern' => '^ajkg',
625  'group' => 'audio',
626  'module' => 'shorten',
627  'mime_type' => 'audio/xmms-shn',
628  'fail_id3' => 'ERROR',
629  'fail_ape' => 'ERROR',
630  ),
631 
632  // TTA - audio - TTA Lossless Audio Compressor (http://tta.corecodec.org)
633  'tta' => array(
634  'pattern' => '^TTA', // could also be '^TTA(\x01|\x02|\x03|2|1)'
635  'group' => 'audio',
636  'module' => 'tta',
637  'mime_type' => 'application/octet-stream',
638  ),
639 
640  // VOC - audio - Creative Voice (VOC)
641  'voc' => array(
642  'pattern' => '^Creative Voice File',
643  'group' => 'audio',
644  'module' => 'voc',
645  'mime_type' => 'audio/voc',
646  ),
647 
648  // VQF - audio - transform-domain weighted interleave Vector Quantization Format (VQF)
649  'vqf' => array(
650  'pattern' => '^TWIN',
651  'group' => 'audio',
652  'module' => 'vqf',
653  'mime_type' => 'application/octet-stream',
654  ),
655 
656  // WV - audio - WavPack (v4.0+)
657  'wv' => array(
658  'pattern' => '^wvpk',
659  'group' => 'audio',
660  'module' => 'wavpack',
661  'mime_type' => 'application/octet-stream',
662  ),
663 
664 
665  // Audio-Video formats
666 
667  // ASF - audio/video - Advanced Streaming Format, Windows Media Video, Windows Media Audio
668  'asf' => array(
669  'pattern' => '^\x30\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C',
670  'group' => 'audio-video',
671  'module' => 'asf',
672  'mime_type' => 'video/x-ms-asf',
673  'iconv_req' => false,
674  ),
675 
676  // BINK - audio/video - Bink / Smacker
677  'bink' => array(
678  'pattern' => '^(BIK|SMK)',
679  'group' => 'audio-video',
680  'module' => 'bink',
681  'mime_type' => 'application/octet-stream',
682  ),
683 
684  // FLV - audio/video - FLash Video
685  'flv' => array(
686  'pattern' => '^FLV\x01',
687  'group' => 'audio-video',
688  'module' => 'flv',
689  'mime_type' => 'video/x-flv',
690  ),
691 
692  // MKAV - audio/video - Mastroka
693  'matroska' => array(
694  'pattern' => '^\x1A\x45\xDF\xA3',
695  'group' => 'audio-video',
696  'module' => 'matroska',
697  'mime_type' => 'application/octet-stream',
698  ),
699 
700  // MPEG - audio/video - MPEG (Moving Pictures Experts Group)
701  'mpeg' => array(
702  'pattern' => '^\x00\x00\x01(\xBA|\xB3)',
703  'group' => 'audio-video',
704  'module' => 'mpeg',
705  'mime_type' => 'video/mpeg',
706  ),
707 
708  // NSV - audio/video - Nullsoft Streaming Video (NSV)
709  'nsv' => array(
710  'pattern' => '^NSV[sf]',
711  'group' => 'audio-video',
712  'module' => 'nsv',
713  'mime_type' => 'application/octet-stream',
714  ),
715 
716  // Ogg - audio/video - Ogg (Ogg-Vorbis, Ogg-FLAC, Speex, Ogg-Theora(*), Ogg-Tarkin(*))
717  'ogg' => array(
718  'pattern' => '^OggS',
719  'group' => 'audio',
720  'module' => 'ogg',
721  'mime_type' => 'application/ogg',
722  'fail_id3' => 'WARNING',
723  'fail_ape' => 'WARNING',
724  ),
725 
726  // QT - audio/video - Quicktime
727  'quicktime' => array(
728  'pattern' => '^.{4}(cmov|free|ftyp|mdat|moov|pnot|skip|wide)',
729  'group' => 'audio-video',
730  'module' => 'quicktime',
731  'mime_type' => 'video/quicktime',
732  ),
733 
734  // RIFF - audio/video - Resource Interchange File Format (RIFF) / WAV / AVI / CD-audio / SDSS = renamed variant used by SmartSound QuickTracks (www.smartsound.com) / FORM = Audio Interchange File Format (AIFF)
735  'riff' => array(
736  'pattern' => '^(RIFF|SDSS|FORM)',
737  'group' => 'audio-video',
738  'module' => 'riff',
739  'mime_type' => 'audio/x-wave',
740  'fail_ape' => 'WARNING',
741  ),
742 
743  // Real - audio/video - RealAudio, RealVideo
744  'real' => array(
745  'pattern' => '^(\.RMF|.ra)',
746  'group' => 'audio-video',
747  'module' => 'real',
748  'mime_type' => 'audio/x-realaudio',
749  ),
750 
751  // SWF - audio/video - ShockWave Flash
752  'swf' => array(
753  'pattern' => '^(F|C)WS',
754  'group' => 'audio-video',
755  'module' => 'swf',
756  'mime_type' => 'application/x-shockwave-flash',
757  ),
758 
759 
760  // Still-Image formats
761 
762  // BMP - still image - Bitmap (Windows, OS/2; uncompressed, RLE8, RLE4)
763  'bmp' => array(
764  'pattern' => '^BM',
765  'group' => 'graphic',
766  'module' => 'bmp',
767  'mime_type' => 'image/bmp',
768  'fail_id3' => 'ERROR',
769  'fail_ape' => 'ERROR',
770  ),
771 
772  // GIF - still image - Graphics Interchange Format
773  'gif' => array(
774  'pattern' => '^GIF',
775  'group' => 'graphic',
776  'module' => 'gif',
777  'mime_type' => 'image/gif',
778  'fail_id3' => 'ERROR',
779  'fail_ape' => 'ERROR',
780  ),
781 
782  // JPEG - still image - Joint Photographic Experts Group (JPEG)
783  'jpg' => array(
784  'pattern' => '^\xFF\xD8\xFF',
785  'group' => 'graphic',
786  'module' => 'jpg',
787  'mime_type' => 'image/jpeg',
788  'fail_id3' => 'ERROR',
789  'fail_ape' => 'ERROR',
790  ),
791 
792  // PCD - still image - Kodak Photo CD
793  'pcd' => array(
794  'pattern' => '^.{2048}PCD_IPI\x00',
795  'group' => 'graphic',
796  'module' => 'pcd',
797  'mime_type' => 'image/x-photo-cd',
798  'fail_id3' => 'ERROR',
799  'fail_ape' => 'ERROR',
800  ),
801 
802 
803  // PNG - still image - Portable Network Graphics (PNG)
804  'png' => array(
805  'pattern' => '^\x89\x50\x4E\x47\x0D\x0A\x1A\x0A',
806  'group' => 'graphic',
807  'module' => 'png',
808  'mime_type' => 'image/png',
809  'fail_id3' => 'ERROR',
810  'fail_ape' => 'ERROR',
811  ),
812 
813 
814  // TIFF - still image - Tagged Information File Format (TIFF)
815  'tiff' => array(
816  'pattern' => '^(II\x2A\x00|MM\x00\x2A)',
817  'group' => 'graphic',
818  'module' => 'tiff',
819  'mime_type' => 'image/tiff',
820  'fail_id3' => 'ERROR',
821  'fail_ape' => 'ERROR',
822  ),
823 
824 
825  // Data formats
826 
827  // ISO - data - International Standards Organization (ISO) CD-ROM Image
828  'iso' => array(
829  'pattern' => '^.{32769}CD001',
830  'group' => 'misc',
831  'module' => 'iso',
832  'mime_type' => 'application/octet-stream',
833  'fail_id3' => 'ERROR',
834  'fail_ape' => 'ERROR',
835  'iconv_req' => false,
836  ),
837 
838  // RAR - data - RAR compressed data
839  'rar' => array(
840  'pattern' => '^Rar\!',
841  'group' => 'archive',
842  'module' => 'rar',
843  'mime_type' => 'application/octet-stream',
844  'fail_id3' => 'ERROR',
845  'fail_ape' => 'ERROR',
846  ),
847 
848  // SZIP - audio/data - SZIP compressed data
849  'szip' => array(
850  'pattern' => '^SZ\x0A\x04',
851  'group' => 'archive',
852  'module' => 'szip',
853  'mime_type' => 'application/octet-stream',
854  'fail_id3' => 'ERROR',
855  'fail_ape' => 'ERROR',
856  ),
857 
858  // TAR - data - TAR compressed data
859  'tar' => array(
860  'pattern' => '^.{100}[0-9\x20]{7}\x00[0-9\x20]{7}\x00[0-9\x20]{7}\x00[0-9\x20\x00]{12}[0-9\x20\x00]{12}',
861  'group' => 'archive',
862  'module' => 'tar',
863  'mime_type' => 'application/x-tar',
864  'fail_id3' => 'ERROR',
865  'fail_ape' => 'ERROR',
866  ),
867 
868  // GZIP - data - GZIP compressed data
869  'gz' => array(
870  'pattern' => '^\x1F\x8B\x08',
871  'group' => 'archive',
872  'module' => 'gzip',
873  'mime_type' => 'application/x-gzip',
874  'fail_id3' => 'ERROR',
875  'fail_ape' => 'ERROR',
876  ),
877 
878  // ZIP - data - ZIP compressed data
879  'zip' => array(
880  'pattern' => '^PK\x03\x04',
881  'group' => 'archive',
882  'module' => 'zip',
883  'mime_type' => 'application/zip',
884  'fail_id3' => 'ERROR',
885  'fail_ape' => 'ERROR',
886  ),
887 
888 
889  // Misc other formats
890 
891  // PDF - data - ZIP compressed data
892  'pdf' => array(
893  'pattern' => '^\x25PDF',
894  'group' => 'misc',
895  'module' => 'pdf',
896  'mime_type' => 'application/pdf',
897  'fail_id3' => 'ERROR',
898  'fail_ape' => 'ERROR',
899  ),
900 
901  // MSOFFICE - data - ZIP compressed data
902  'msoffice' => array(
903  'pattern' => '^\xD0\xCF\x11\xE0', // D0CF11E == DOCFILE == Microsoft Office Document
904  'group' => 'misc',
905  'module' => 'msoffice',
906  'mime_type' => 'application/octet-stream',
907  'fail_id3' => 'ERROR',
908  'fail_ape' => 'ERROR',
909  ),
910  );
911  }
912 
913  return $format_info;
914  }
915 
916 
917 
918  function GetFileFormat(&$filedata, $filename='') {
919  // this function will determine the format of a file based on usually
920  // the first 2-4 bytes of the file (8 bytes for PNG, 16 bytes for JPG,
921  // and in the case of ISO CD image, 6 bytes offset 32kb from the start
922  // of the file).
923 
924  // Identify file format - loop through $format_info and detect with reg expr
925  foreach ($this->GetFileFormatArray() as $format_name => $info) {
926  // Using preg_match() instead of ereg() - much faster
927  // The /s switch on preg_match() forces preg_match() NOT to treat
928  // newline (0x0A) characters as special chars but do a binary match
929  if (preg_match('/'.$info['pattern'].'/s', $filedata)) {
930  $info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
931  return $info;
932  }
933  }
934 
935 
936  if (preg_match('/\.mp[123a]$/i', $filename)) {
937  // Too many mp3 encoders on the market put gabage in front of mpeg files
938  // use assume format on these if format detection failed
939  $GetFileFormatArray = $this->GetFileFormatArray();
940  $info = $GetFileFormatArray['mp3'];
941  $info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
942  return $info;
943  }
944 
945  return false;
946  }
947 
948 
949  // converts array to $encoding charset from $this->encoding
950  function CharConvert(&$array, $encoding) {
951 
952  // identical encoding - end here
953  if ($encoding == $this->encoding) {
954  return;
955  }
956 
957  // loop thru array
958  foreach ($array as $key => $value) {
959 
960  // go recursive
961  if (is_array($value)) {
962  $this->CharConvert($array[$key], $encoding);
963  }
964 
965  // convert string
966  elseif (is_string($value)) {
967  $array[$key] = trim(getid3_lib::iconv_fallback($encoding, $this->encoding, $value));
968  }
969  }
970  }
971 
972 
973  function HandleAllTags() {
974 
975  // key name => array (tag name, character encoding)
976  static $tags;
977  if (empty($tags)) {
978  $tags = array(
979  'asf' => array('asf' , 'UTF-16LE'),
980  'midi' => array('midi' , 'ISO-8859-1'),
981  'nsv' => array('nsv' , 'ISO-8859-1'),
982  'ogg' => array('vorbiscomment' , 'UTF-8'),
983  'png' => array('png' , 'UTF-8'),
984  'tiff' => array('tiff' , 'ISO-8859-1'),
985  'quicktime' => array('quicktime' , 'ISO-8859-1'),
986  'real' => array('real' , 'ISO-8859-1'),
987  'vqf' => array('vqf' , 'ISO-8859-1'),
988  'zip' => array('zip' , 'ISO-8859-1'),
989  'riff' => array('riff' , 'ISO-8859-1'),
990  'lyrics3' => array('lyrics3' , 'ISO-8859-1'),
991  'id3v1' => array('id3v1' , $this->encoding_id3v1),
992  'id3v2' => array('id3v2' , 'UTF-8'), // not according to the specs (every frame can have a different encoding), but getID3() force-converts all encodings to UTF-8
993  'ape' => array('ape' , 'UTF-8')
994  );
995  }
996 
997  // loop thru comments array
998  foreach ($tags as $comment_name => $tagname_encoding_array) {
999  list($tag_name, $encoding) = $tagname_encoding_array;
1000 
1001  // fill in default encoding type if not already present
1002  if (isset($this->info[$comment_name]) && !isset($this->info[$comment_name]['encoding'])) {
1003  $this->info[$comment_name]['encoding'] = $encoding;
1004  }
1005 
1006  // copy comments if key name set
1007  if (!empty($this->info[$comment_name]['comments'])) {
1008 
1009  foreach ($this->info[$comment_name]['comments'] as $tag_key => $valuearray) {
1010  foreach ($valuearray as $key => $value) {
1011  if (strlen(trim($value)) > 0) {
1012  $this->info['tags'][trim($tag_name)][trim($tag_key)][] = $value; // do not trim!! Unicode characters will get mangled if trailing nulls are removed!
1013  }
1014  }
1015  }
1016 
1017  if (!isset($this->info['tags'][$tag_name])) {
1018  // comments are set but contain nothing but empty strings, so skip
1019  continue;
1020  }
1021 
1022  if ($this->option_tags_html) {
1023  foreach ($this->info['tags'][$tag_name] as $tag_key => $valuearray) {
1024  foreach ($valuearray as $key => $value) {
1025  if (is_string($value)) {
1026  //$this->info['tags_html'][$tag_name][$tag_key][$key] = getid3_lib::MultiByteCharString2HTML($value, $encoding);
1027  $this->info['tags_html'][$tag_name][$tag_key][$key] = str_replace('&#0;', '', getid3_lib::MultiByteCharString2HTML($value, $encoding));
1028  } else {
1029  $this->info['tags_html'][$tag_name][$tag_key][$key] = $value;
1030  }
1031  }
1032  }
1033  }
1034 
1035  $this->CharConvert($this->info['tags'][$tag_name], $encoding); // only copy gets converted!
1036  }
1037 
1038  }
1039  return true;
1040  }
1041 
1042 
1043  function getHashdata($algorithm) {
1044  switch ($algorithm) {
1045  case 'md5':
1046  case 'sha1':
1047  break;
1048 
1049  default:
1050  return $this->error('bad algorithm "'.$algorithm.'" in getHashdata()');
1051  break;
1052  }
1053 
1054  if ((@$this->info['fileformat'] == 'ogg') && (@$this->info['audio']['dataformat'] == 'vorbis')) {
1055 
1056  // We cannot get an identical md5_data value for Ogg files where the comments
1057  // span more than 1 Ogg page (compared to the same audio data with smaller
1058  // comments) using the normal getID3() method of MD5'ing the data between the
1059  // end of the comments and the end of the file (minus any trailing tags),
1060  // because the page sequence numbers of the pages that the audio data is on
1061  // do not match. Under normal circumstances, where comments are smaller than
1062  // the nominal 4-8kB page size, then this is not a problem, but if there are
1063  // very large comments, the only way around it is to strip off the comment
1064  // tags with vorbiscomment and MD5 that file.
1065  // This procedure must be applied to ALL Ogg files, not just the ones with
1066  // comments larger than 1 page, because the below method simply MD5's the
1067  // whole file with the comments stripped, not just the portion after the
1068  // comments block (which is the standard getID3() method.
1069 
1070  // The above-mentioned problem of comments spanning multiple pages and changing
1071  // page sequence numbers likely happens for OggSpeex and OggFLAC as well, but
1072  // currently vorbiscomment only works on OggVorbis files.
1073 
1074  if ((bool) ini_get('safe_mode')) {
1075 
1076  $this->info['warning'][] = 'Failed making system call to vorbiscomment.exe - '.$algorithm.'_data is incorrect - error returned: PHP running in Safe Mode (backtick operator not available)';
1077  $this->info[$algorithm.'_data'] = false;
1078 
1079  } else {
1080 
1081  // Prevent user from aborting script
1082  $old_abort = ignore_user_abort(true);
1083 
1084  // Create empty file
1085  $empty = tempnam('*', 'getID3');
1086  touch($empty);
1087 
1088 
1089  // Use vorbiscomment to make temp file without comments
1090  $temp = tempnam('*', 'getID3');
1091  $file = $this->info['filenamepath'];
1092 
1093  if (GETID3_OS_ISWINDOWS) {
1094 
1095  if (file_exists(GETID3_HELPERAPPSDIR.'vorbiscomment.exe')) {
1096 
1097  $commandline = '"'.GETID3_HELPERAPPSDIR.'vorbiscomment.exe" -w -c "'.$empty.'" "'.$file.'" "'.$temp.'"';
1098  $VorbisCommentError = `$commandline`;
1099 
1100  } else {
1101 
1102  $VorbisCommentError = 'vorbiscomment.exe not found in '.GETID3_HELPERAPPSDIR;
1103 
1104  }
1105 
1106  } else {
1107 
1108  $commandline = 'vorbiscomment -w -c "'.$empty.'" "'.$file.'" "'.$temp.'" 2>&1';
1109  $commandline = 'vorbiscomment -w -c '.escapeshellarg($empty).' '.escapeshellarg($file).' '.escapeshellarg($temp).' 2>&1';
1110  $VorbisCommentError = `$commandline`;
1111 
1112  }
1113 
1114  if (!empty($VorbisCommentError)) {
1115 
1116  $this->info['warning'][] = 'Failed making system call to vorbiscomment(.exe) - '.$algorithm.'_data will be incorrect. If vorbiscomment is unavailable, please download from http://www.vorbis.com/download.psp and put in the getID3() directory. Error returned: '.$VorbisCommentError;
1117  $this->info[$algorithm.'_data'] = false;
1118 
1119  } else {
1120 
1121  // Get hash of newly created file
1122  switch ($algorithm) {
1123  case 'md5':
1124  $this->info[$algorithm.'_data'] = getid3_lib::md5_file($temp);
1125  break;
1126 
1127  case 'sha1':
1128  $this->info[$algorithm.'_data'] = getid3_lib::sha1_file($temp);
1129  break;
1130  }
1131  }
1132 
1133  // Clean up
1134  unlink($empty);
1135  unlink($temp);
1136 
1137  // Reset abort setting
1138  ignore_user_abort($old_abort);
1139 
1140  }
1141 
1142  } else {
1143 
1144  if (!empty($this->info['avdataoffset']) || (isset($this->info['avdataend']) && ($this->info['avdataend'] < $this->info['filesize']))) {
1145 
1146  // get hash from part of file
1147  $this->info[$algorithm.'_data'] = getid3_lib::hash_data($this->info['filenamepath'], $this->info['avdataoffset'], $this->info['avdataend'], $algorithm);
1148 
1149  } else {
1150 
1151  // get hash from whole file
1152  switch ($algorithm) {
1153  case 'md5':
1154  $this->info[$algorithm.'_data'] = getid3_lib::md5_file($this->info['filenamepath']);
1155  break;
1156 
1157  case 'sha1':
1158  $this->info[$algorithm.'_data'] = getid3_lib::sha1_file($this->info['filenamepath']);
1159  break;
1160  }
1161  }
1162 
1163  }
1164  return true;
1165  }
1166 
1167 
1168  function ChannelsBitratePlaytimeCalculations() {
1169 
1170  // set channelmode on audio
1171  if (@$this->info['audio']['channels'] == '1') {
1172  $this->info['audio']['channelmode'] = 'mono';
1173  } elseif (@$this->info['audio']['channels'] == '2') {
1174  $this->info['audio']['channelmode'] = 'stereo';
1175  }
1176 
1177  // Calculate combined bitrate - audio + video
1178  $CombinedBitrate = 0;
1179  $CombinedBitrate += (isset($this->info['audio']['bitrate']) ? $this->info['audio']['bitrate'] : 0);
1180  $CombinedBitrate += (isset($this->info['video']['bitrate']) ? $this->info['video']['bitrate'] : 0);
1181  if (($CombinedBitrate > 0) && empty($this->info['bitrate'])) {
1182  $this->info['bitrate'] = $CombinedBitrate;
1183  }
1184  //if ((isset($this->info['video']) && !isset($this->info['video']['bitrate'])) || (isset($this->info['audio']) && !isset($this->info['audio']['bitrate']))) {
1185  // // for example, VBR MPEG video files cannot determine video bitrate:
1186  // // should not set overall bitrate and playtime from audio bitrate only
1187  // unset($this->info['bitrate']);
1188  //}
1189 
1190  if (!isset($this->info['playtime_seconds']) && !empty($this->info['bitrate'])) {
1191  $this->info['playtime_seconds'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['bitrate'];
1192  }
1193 
1194  // Set playtime string
1195  if (!empty($this->info['playtime_seconds']) && empty($this->info['playtime_string'])) {
1196  $this->info['playtime_string'] = getid3_lib::PlaytimeString($this->info['playtime_seconds']);
1197  }
1198  }
1199 
1200 
1201  function CalculateCompressionRatioVideo() {
1202  if (empty($this->info['video'])) {
1203  return false;
1204  }
1205  if (empty($this->info['video']['resolution_x']) || empty($this->info['video']['resolution_y'])) {
1206  return false;
1207  }
1208  if (empty($this->info['video']['bits_per_sample'])) {
1209  return false;
1210  }
1211 
1212  switch ($this->info['video']['dataformat']) {
1213  case 'bmp':
1214  case 'gif':
1215  case 'jpeg':
1216  case 'jpg':
1217  case 'png':
1218  case 'tiff':
1219  $FrameRate = 1;
1220  $PlaytimeSeconds = 1;
1221  $BitrateCompressed = $this->info['filesize'] * 8;
1222  break;
1223 
1224  default:
1225  if (!empty($this->info['video']['frame_rate'])) {
1226  $FrameRate = $this->info['video']['frame_rate'];
1227  } else {
1228  return false;
1229  }
1230  if (!empty($this->info['playtime_seconds'])) {
1231  $PlaytimeSeconds = $this->info['playtime_seconds'];
1232  } else {
1233  return false;
1234  }
1235  if (!empty($this->info['video']['bitrate'])) {
1236  $BitrateCompressed = $this->info['video']['bitrate'];
1237  } else {
1238  return false;
1239  }
1240  break;
1241  }
1242  $BitrateUncompressed = $this->info['video']['resolution_x'] * $this->info['video']['resolution_y'] * $this->info['video']['bits_per_sample'] * $FrameRate;
1243 
1244  $this->info['video']['compression_ratio'] = $BitrateCompressed / $BitrateUncompressed;
1245  return true;
1246  }
1247 
1248 
1249  function CalculateCompressionRatioAudio() {
1250  if (empty($this->info['audio']['bitrate']) || empty($this->info['audio']['channels']) || empty($this->info['audio']['sample_rate'])) {
1251  return false;
1252  }
1253  $this->info['audio']['compression_ratio'] = $this->info['audio']['bitrate'] / ($this->info['audio']['channels'] * $this->info['audio']['sample_rate'] * (!empty($this->info['audio']['bits_per_sample']) ? $this->info['audio']['bits_per_sample'] : 16));
1254 
1255  if (!empty($this->info['audio']['streams'])) {
1256  foreach ($this->info['audio']['streams'] as $streamnumber => $streamdata) {
1257  if (!empty($streamdata['bitrate']) && !empty($streamdata['channels']) && !empty($streamdata['sample_rate'])) {
1258  $this->info['audio']['streams'][$streamnumber]['compression_ratio'] = $streamdata['bitrate'] / ($streamdata['channels'] * $streamdata['sample_rate'] * (!empty($streamdata['bits_per_sample']) ? $streamdata['bits_per_sample'] : 16));
1259  }
1260  }
1261  }
1262  return true;
1263  }
1264 
1265 
1266  function CalculateReplayGain() {
1267  if (isset($this->info['replay_gain'])) {
1268  $this->info['replay_gain']['reference_volume'] = 89;
1269  if (isset($this->info['replay_gain']['track']['adjustment'])) {
1270  $this->info['replay_gain']['track']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['track']['adjustment'];
1271  }
1272  if (isset($this->info['replay_gain']['album']['adjustment'])) {
1273  $this->info['replay_gain']['album']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['album']['adjustment'];
1274  }
1275 
1276  if (isset($this->info['replay_gain']['track']['peak'])) {
1277  $this->info['replay_gain']['track']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['track']['peak']);
1278  }
1279  if (isset($this->info['replay_gain']['album']['peak'])) {
1280  $this->info['replay_gain']['album']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['album']['peak']);
1281  }
1282  }
1283  return true;
1284  }
1285 
1286  function ProcessAudioStreams() {
1287  if (!empty($this->info['audio']['bitrate']) || !empty($this->info['audio']['channels']) || !empty($this->info['audio']['sample_rate'])) {
1288  if (!isset($this->info['audio']['streams'])) {
1289  foreach ($this->info['audio'] as $key => $value) {
1290  if ($key != 'streams') {
1291  $this->info['audio']['streams'][0][$key] = $value;
1292  }
1293  }
1294  }
1295  }
1296  return true;
1297  }
1298 
1299  function getid3_tempnam() {
1300  return tempnam($this->tempdir, 'gI3');
1301  }
1302 
1303 }
1304 
1305 ?>