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getid3.php @ 3544

Last change on this file since 3544 was 3544, checked in by vdigital, 15 years ago
Change: getid3 upgraded to -> 1.7.9
Property svn:eol-style set to `LF` Property svn:keywords set to `Author Date Id Revision`
File size: 47.9 KB

Line
1	<?php
2	/////////////////////////////////////////////////////////////////
3	/// getID3() by James Heinrich <info@getid3.org> //
4	// available at http://getid3.sourceforge.net //
5	// or http://www.getid3.org //
6	/////////////////////////////////////////////////////////////////
7	// //
8	// Please see readme.txt for more information //
9	// ///
10	/////////////////////////////////////////////////////////////////
11
12	// Defines
13	define('GETID3_VERSION', '1.7.9-20090308');
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 >= 4.2.0
57	if (phpversion() < '4.2.0') {
58	$this->startup_error .= 'getID3() requires PHP v4.2.0 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
114	$helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path
115
116	if (!is_dir($helperappsdir)) {
117	$this->startup_error .= '"'.$helperappsdir.'" cannot be defined as GETID3_HELPERAPPSDIR because it does not exist';
118	} elseif (strpos(realpath($helperappsdir), ' ') !== false) {
119	$DirPieces = explode(DIRECTORY_SEPARATOR, realpath($helperappsdir));
120	foreach ($DirPieces as $key => $value) {
121	if ((strpos($value, '.') !== false) && (strpos($value, ' ') === false)) {
122	if (strpos($value, '.') > 8) {
123	$value = substr($value, 0, 6).'~1';
124	}
125	} elseif ((strpos($value, ' ') !== false) \|\| strlen($value) > 8) {
126	$value = substr($value, 0, 6).'~1';
127	}
128	$DirPieces[$key] = strtoupper($value);
129	}
130	$this->startup_error .= 'GETID3_HELPERAPPSDIR must not have any spaces in it - use 8dot3 naming convention if neccesary (on this server that would be something like "'.implode(DIRECTORY_SEPARATOR, $DirPieces).'" - NOTE: this may or may not be the actual 8.3 equivalent of "'.$helperappsdir.'", please double-check). You can run "dir /x" from the commandline to see the correct 8.3-style names.';
131	}
132	define('GETID3_HELPERAPPSDIR', realpath($helperappsdir).DIRECTORY_SEPARATOR);
133	}
134
135	}
136
137
138	// public: setOption
139	function setOption($optArray) {
140	if (!is_array($optArray) \|\| empty($optArray)) {
141	return false;
142	}
143	foreach ($optArray as $opt => $val) {
144	//if (isset($this, $opt) === false) {
145	if (isset($this->$opt) === false) {
146	continue;
147	}
148	$this->$opt = $val;
149	}
150	return true;
151	}
152
153
154	// public: analyze file - replaces GetAllFileInfo() and GetTagOnly()
155	function analyze($filename) {
156
157	if (!empty($this->startup_error)) {
158	return $this->error($this->startup_error);
159	}
160	if (!empty($this->startup_warning)) {
161	$this->warning($this->startup_warning);
162	}
163
164	// init result array and set parameters
165	$this->info = array();
166	$this->info['GETID3_VERSION'] = GETID3_VERSION;
167
168	// Check encoding/iconv support
169	if (!function_exists('iconv') && !in_array($this->encoding, array('ISO-8859-1', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'UTF-16'))) {
170	$errormessage = 'iconv() support is needed for encodings other than ISO-8859-1, UTF-8, UTF-16LE, UTF16-BE, UTF-16. ';
171	if (GETID3_OS_ISWINDOWS) {
172	$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';
173	} else {
174	$errormessage .= 'PHP is not compiled with iconv() support. Please recompile with the --with-iconv switch';
175	}
176	return $this->error($errormessage);
177	}
178
179	// Disable magic_quotes_runtime, if neccesary
180	$old_magic_quotes_runtime = get_magic_quotes_runtime(); // store current setting of magic_quotes_runtime
181	if ($old_magic_quotes_runtime) {
182	set_magic_quotes_runtime(0); // turn off magic_quotes_runtime
183	if (get_magic_quotes_runtime()) {
184	return $this->error('Could not disable magic_quotes_runtime - getID3() cannot work properly with this setting enabled');
185	}
186	}
187
188	// remote files not supported
189	if (preg_match('/^(ht\|f)tp:\/\//', $filename)) {
190	return $this->error('Remote files are not supported in this version of getID3() - please copy the file locally first');
191	}
192
193	$filename = str_replace('/', DIRECTORY_SEPARATOR, $filename);
194	$filename = preg_replace('#'.preg_quote(DIRECTORY_SEPARATOR).'{2,}#', DIRECTORY_SEPARATOR, $filename);
195
196	// open local file
197	if (file_exists($filename) && ($fp = @fopen($filename, 'rb'))) {
198	// great
199	} else {
200	return $this->error('Could not open file "'.$filename.'"');
201	}
202
203	// set parameters
204	$this->info['filesize'] = filesize($filename);
205
206	// option_max_2gb_check
207	if ($this->option_max_2gb_check) {
208	// PHP doesn't support integers larger than 31-bit (~2GB)
209	// filesize() simply returns (filesize % (pow(2, 32)), no matter the actual filesize
210	// ftell() returns 0 if seeking to the end is beyond the range of unsigned integer
211	fseek($fp, 0, SEEK_END);
212	if ((($this->info['filesize'] != 0) && (ftell($fp) == 0)) \|\|
213	($this->info['filesize'] < 0) \|\|
214	(ftell($fp) < 0)) {
215	$real_filesize = false;
216	if (GETID3_OS_ISWINDOWS) {
217	$commandline = 'dir /-C "'.str_replace('/', DIRECTORY_SEPARATOR, $filename).'"';
218	$dir_output = `$commandline`;
219	if (eregi('1 File$s$[ ]+([0-9]+) bytes', $dir_output, $matches)) {
220	$real_filesize = (float) $matches[1];
221	}
222	} else {
223	$commandline = 'ls -o -g -G --time-style=long-iso '.escapeshellarg($filename);
224	$dir_output = `$commandline`;
225	if (eregi('([0-9]+) ([0-9]{4}-[0-9]{2}\-[0-9]{2} [0-9]{2}:[0-9]{2}) '.preg_quote($filename).'$', $dir_output, $matches)) {
226	$real_filesize = (float) $matches[1];
227	}
228	}
229	if ($real_filesize === false) {
230	unset($this->info['filesize']);
231	fclose($fp);
232	return $this->error('File is most likely larger than 2GB and is not supported by PHP');
233	} elseif ($real_filesize < pow(2, 31)) {
234	unset($this->info['filesize']);
235	fclose($fp);
236	return $this->error('PHP seems to think the file is larger than 2GB, but filesystem reports it as '.number_format($real_filesize, 3).'GB, please report to info@getid3.org');
237	}
238	$this->info['filesize'] = $real_filesize;
239	$this->error('File is larger than 2GB (filesystem reports it as '.number_format($real_filesize, 3).'GB) and is not properly supported by PHP.');
240	}
241	}
242
243	// set more parameters
244	$this->info['avdataoffset'] = 0;
245	$this->info['avdataend'] = $this->info['filesize'];
246	$this->info['fileformat'] = ''; // filled in later
247	$this->info['audio']['dataformat'] = ''; // filled in later, unset if not used
248	$this->info['video']['dataformat'] = ''; // filled in later, unset if not used
249	$this->info['tags'] = array(); // filled in later, unset if not used
250	$this->info['error'] = array(); // filled in later, unset if not used
251	$this->info['warning'] = array(); // filled in later, unset if not used
252	$this->info['comments'] = array(); // filled in later, unset if not used
253	$this->info['encoding'] = $this->encoding; // required by id3v2 and iso modules - can be unset at the end if desired
254
255	// set redundant parameters - might be needed in some include file
256	$this->info['filename'] = basename($filename);
257	$this->info['filepath'] = str_replace('\\', '/', realpath(dirname($filename)));
258	$this->info['filenamepath'] = $this->info['filepath'].'/'.$this->info['filename'];
259
260
261	// handle ID3v2 tag - done first - already at beginning of file
262	// ID3v2 detection (even if not parsing) is always done otherwise fileformat is much harder to detect
263	if ($this->option_tag_id3v2) {
264
265	$GETID3_ERRORARRAY = &$this->info['warning'];
266	if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v2.php', __FILE__, false)) {
267	$tag = new getid3_id3v2($fp, $this->info);
268	unset($tag);
269	}
270
271	} else {
272
273	fseek($fp, 0, SEEK_SET);
274	$header = fread($fp, 10);
275	if (substr($header, 0, 3) == 'ID3' && strlen($header) == 10) {
276	$this->info['id3v2']['header'] = true;
277	$this->info['id3v2']['majorversion'] = ord($header{3});
278	$this->info['id3v2']['minorversion'] = ord($header{4});
279	$this->info['id3v2']['headerlength'] = getid3_lib::BigEndian2Int(substr($header, 6, 4), 1) + 10; // length of ID3v2 tag in 10-byte header doesn't include 10-byte header length
280
281	$this->info['id3v2']['tag_offset_start'] = 0;
282	$this->info['id3v2']['tag_offset_end'] = $this->info['id3v2']['tag_offset_start'] + $this->info['id3v2']['headerlength'];
283	$this->info['avdataoffset'] = $this->info['id3v2']['tag_offset_end'];
284	}
285
286	}
287
288
289	// handle ID3v1 tag
290	if ($this->option_tag_id3v1) {
291	if (!@include_once(GETID3_INCLUDEPATH.'module.tag.id3v1.php')) {
292	return $this->error('module.tag.id3v1.php is missing - you may disable option_tag_id3v1.');
293	}
294	$tag = new getid3_id3v1($fp, $this->info);
295	unset($tag);
296	}
297
298	// handle APE tag
299	if ($this->option_tag_apetag) {
300	if (!@include_once(GETID3_INCLUDEPATH.'module.tag.apetag.php')) {
301	return $this->error('module.tag.apetag.php is missing - you may disable option_tag_apetag.');
302	}
303	$tag = new getid3_apetag($fp, $this->info);
304	unset($tag);
305	}
306
307	// handle lyrics3 tag
308	if ($this->option_tag_lyrics3) {
309	if (!@include_once(GETID3_INCLUDEPATH.'module.tag.lyrics3.php')) {
310	return $this->error('module.tag.lyrics3.php is missing - you may disable option_tag_lyrics3.');
311	}
312	$tag = new getid3_lyrics3($fp, $this->info);
313	unset($tag);
314	}
315
316	// read 32 kb file data
317	fseek($fp, $this->info['avdataoffset'], SEEK_SET);
318	$formattest = fread($fp, 32774);
319
320	// determine format
321	$determined_format = $this->GetFileFormat($formattest, $filename);
322
323	// unable to determine file format
324	if (!$determined_format) {
325	fclose($fp);
326	return $this->error('unable to determine file format');
327	}
328
329	// check for illegal ID3 tags
330	if (isset($determined_format['fail_id3']) && (in_array('id3v1', $this->info['tags']) \|\| in_array('id3v2', $this->info['tags']))) {
331	if ($determined_format['fail_id3'] === 'ERROR') {
332	fclose($fp);
333	return $this->error('ID3 tags not allowed on this file type.');
334	} elseif ($determined_format['fail_id3'] === 'WARNING') {
335	$this->info['warning'][] = 'ID3 tags not allowed on this file type.';
336	}
337	}
338
339	// check for illegal APE tags
340	if (isset($determined_format['fail_ape']) && in_array('ape', $this->info['tags'])) {
341	if ($determined_format['fail_ape'] === 'ERROR') {
342	fclose($fp);
343	return $this->error('APE tags not allowed on this file type.');
344	} elseif ($determined_format['fail_ape'] === 'WARNING') {
345	$this->info['warning'][] = 'APE tags not allowed on this file type.';
346	}
347	}
348
349	// set mime type
350	$this->info['mime_type'] = $determined_format['mime_type'];
351
352	// supported format signature pattern detected, but module deleted
353	if (!file_exists(GETID3_INCLUDEPATH.$determined_format['include'])) {
354	fclose($fp);
355	return $this->error('Format not supported, module "'.$determined_format['include'].'" was removed.');
356	}
357
358	// module requires iconv support
359	if (!function_exists('iconv') && @$determined_format['iconv_req']) {
360	return $this->error('iconv support is required for this module ('.$determined_format['include'].').');
361	}
362
363	// include module
364	include_once(GETID3_INCLUDEPATH.$determined_format['include']);
365
366	// instantiate module class
367	$class_name = 'getid3_'.$determined_format['module'];
368	if (!class_exists($class_name)) {
369	return $this->error('Format not supported, module "'.$determined_format['include'].'" is corrupt.');
370	}
371	if (isset($determined_format['option'])) {
372	$class = new $class_name($fp, $this->info, $determined_format['option']);
373	} else {
374	$class = new $class_name($fp, $this->info);
375	}
376	unset($class);
377
378	// close file
379	fclose($fp);
380
381	// process all tags - copy to 'tags' and convert charsets
382	if ($this->option_tags_process) {
383	$this->HandleAllTags();
384	}
385
386	// perform more calculations
387	if ($this->option_extra_info) {
388	$this->ChannelsBitratePlaytimeCalculations();
389	$this->CalculateCompressionRatioVideo();
390	$this->CalculateCompressionRatioAudio();
391	$this->CalculateReplayGain();
392	$this->ProcessAudioStreams();
393	}
394
395	// get the MD5 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
396	if ($this->option_md5_data) {
397	// do not cald md5_data if md5_data_source is present - set by flac only - future MPC/SV8 too
398	if (!$this->option_md5_data_source \|\| empty($this->info['md5_data_source'])) {
399	$this->getHashdata('md5');
400	}
401	}
402
403	// get the SHA1 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
404	if ($this->option_sha1_data) {
405	$this->getHashdata('sha1');
406	}
407
408	// remove undesired keys
409	$this->CleanUp();
410
411	// restore magic_quotes_runtime setting
412	set_magic_quotes_runtime($old_magic_quotes_runtime);
413
414	// return info array
415	return $this->info;
416	}
417
418
419	// private: error handling
420	function error($message) {
421
422	$this->CleanUp();
423
424	$this->info['error'][] = $message;
425	return $this->info;
426	}
427
428
429	// private: warning handling
430	function warning($message) {
431	$this->info['warning'][] = $message;
432	return true;
433	}
434
435
436	// private: CleanUp
437	function CleanUp() {
438
439	// remove possible empty keys
440	$AVpossibleEmptyKeys = array('dataformat', 'bits_per_sample', 'encoder_options', 'streams', 'bitrate');
441	foreach ($AVpossibleEmptyKeys as $dummy => $key) {
442	if (empty($this->info['audio'][$key]) && isset($this->info['audio'][$key])) {
443	unset($this->info['audio'][$key]);
444	}
445	if (empty($this->info['video'][$key]) && isset($this->info['video'][$key])) {
446	unset($this->info['video'][$key]);
447	}
448	}
449
450	// remove empty root keys
451	if (!empty($this->info)) {
452	foreach ($this->info as $key => $value) {
453	if (empty($this->info[$key]) && ($this->info[$key] !== 0) && ($this->info[$key] !== '0')) {
454	unset($this->info[$key]);
455	}
456	}
457	}
458
459	// remove meaningless entries from unknown-format files
460	if (empty($this->info['fileformat'])) {
461	if (isset($this->info['avdataoffset'])) {
462	unset($this->info['avdataoffset']);
463	}
464	if (isset($this->info['avdataend'])) {
465	unset($this->info['avdataend']);
466	}
467	}
468	}
469
470
471	// return array containing information about all supported formats
472	function GetFileFormatArray() {
473	static $format_info = array();
474	if (empty($format_info)) {
475	$format_info = array(
476
477	// Audio formats
478
479	// AC-3 - audio - Dolby AC-3 / Dolby Digital
480	'ac3' => array(
481	'pattern' => '^\x0B\x77',
482	'group' => 'audio',
483	'module' => 'ac3',
484	'mime_type' => 'audio/ac3',
485	),
486
487	// AAC - audio - Advanced Audio Coding (AAC) - ADIF format
488	'adif' => array(
489	'pattern' => '^ADIF',
490	'group' => 'audio',
491	'module' => 'aac',
492	'option' => 'adif',
493	'mime_type' => 'application/octet-stream',
494	'fail_ape' => 'WARNING',
495	),
496
497
498	// AAC - audio - Advanced Audio Coding (AAC) - ADTS format (very similar to MP3)
499	'adts' => array(
500	'pattern' => '^\xFF[\xF0-\xF1\xF8-\xF9]',
501	'group' => 'audio',
502	'module' => 'aac',
503	'option' => 'adts',
504	'mime_type' => 'application/octet-stream',
505	'fail_ape' => 'WARNING',
506	),
507
508
509	// AU - audio - NeXT/Sun AUdio (AU)
510	'au' => array(
511	'pattern' => '^\.snd',
512	'group' => 'audio',
513	'module' => 'au',
514	'mime_type' => 'audio/basic',
515	),
516
517	// AVR - audio - Audio Visual Research
518	'avr' => array(
519	'pattern' => '^2BIT',
520	'group' => 'audio',
521	'module' => 'avr',
522	'mime_type' => 'application/octet-stream',
523	),
524
525	// BONK - audio - Bonk v0.9+
526	'bonk' => array(
527	'pattern' => '^\x00(BONK\|INFO\|META\| ID3)',
528	'group' => 'audio',
529	'module' => 'bonk',
530	'mime_type' => 'audio/xmms-bonk',
531	),
532
533	// DSS - audio - Digital Speech Standard
534	'dss' => array(
535	'pattern' => '^[\x02]dss',
536	'group' => 'audio',
537	'module' => 'dss',
538	'mime_type' => 'application/octet-stream',
539	),
540
541	// DTS - audio - Dolby Theatre System
542	'dts' => array(
543	'pattern' => '^\x7F\xFE\x80\x01',
544	'group' => 'audio',
545	'module' => 'dts',
546	'mime_type' => 'audio/dts',
547	),
548
549	// FLAC - audio - Free Lossless Audio Codec
550	'flac' => array(
551	'pattern' => '^fLaC',
552	'group' => 'audio',
553	'module' => 'flac',
554	'mime_type' => 'audio/x-flac',
555	),
556
557	// LA - audio - Lossless Audio (LA)
558	'la' => array(
559	'pattern' => '^LA0[2-4]',
560	'group' => 'audio',
561	'module' => 'la',
562	'mime_type' => 'application/octet-stream',
563	),
564
565	// LPAC - audio - Lossless Predictive Audio Compression (LPAC)
566	'lpac' => array(
567	'pattern' => '^LPAC',
568	'group' => 'audio',
569	'module' => 'lpac',
570	'mime_type' => 'application/octet-stream',
571	),
572
573	// MIDI - audio - MIDI (Musical Instrument Digital Interface)
574	'midi' => array(
575	'pattern' => '^MThd',
576	'group' => 'audio',
577	'module' => 'midi',
578	'mime_type' => 'audio/midi',
579	),
580
581	// MAC - audio - Monkey's Audio Compressor
582	'mac' => array(
583	'pattern' => '^MAC ',
584	'group' => 'audio',
585	'module' => 'monkey',
586	'mime_type' => 'application/octet-stream',
587	),
588
589	// has been known to produce false matches in random files (e.g. JPEGs), leave out until more precise matching available
590	// // MOD - audio - MODule (assorted sub-formats)
591	// 'mod' => array(
592	// 'pattern' => '^.{1080}(M\\.K\\.\|M!K!\|FLT4\|FLT8\|[5-9]CHN\|[1-3][0-9]CH)',
593	// 'group' => 'audio',
594	// 'module' => 'mod',
595	// 'option' => 'mod',
596	// 'mime_type' => 'audio/mod',
597	// ),
598
599	// MOD - audio - MODule (Impulse Tracker)
600	'it' => array(
601	'pattern' => '^IMPM',
602	'group' => 'audio',
603	'module' => 'mod',
604	'option' => 'it',
605	'mime_type' => 'audio/it',
606	),
607
608	// MOD - audio - MODule (eXtended Module, various sub-formats)
609	'xm' => array(
610	'pattern' => '^Extended Module',
611	'group' => 'audio',
612	'module' => 'mod',
613	'option' => 'xm',
614	'mime_type' => 'audio/xm',
615	),
616
617	// MOD - audio - MODule (ScreamTracker)
618	's3m' => array(
619	'pattern' => '^.{44}SCRM',
620	'group' => 'audio',
621	'module' => 'mod',
622	'option' => 's3m',
623	'mime_type' => 'audio/s3m',
624	),
625
626	// MPC - audio - Musepack / MPEGplus
627	'mpc' => array(
628	'pattern' => '^(MPCK\|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])',
629	'group' => 'audio',
630	'module' => 'mpc',
631	'mime_type' => 'audio/x-musepack',
632	),
633
634	// MP3 - audio - MPEG-audio Layer 3 (very similar to AAC-ADTS)
635	'mp3' => array(
636	'pattern' => '^\xFF[\xE2-\xE7\xF2-\xF7\xFA-\xFF][\x00-\xEB]',
637	'group' => 'audio',
638	'module' => 'mp3',
639	'mime_type' => 'audio/mpeg',
640	),
641
642	// OFR - audio - OptimFROG
643	'ofr' => array(
644	'pattern' => '^(\*RIFF\|OFR)',
645	'group' => 'audio',
646	'module' => 'optimfrog',
647	'mime_type' => 'application/octet-stream',
648	),
649
650	// RKAU - audio - RKive AUdio compressor
651	'rkau' => array(
652	'pattern' => '^RKA',
653	'group' => 'audio',
654	'module' => 'rkau',
655	'mime_type' => 'application/octet-stream',
656	),
657
658	// SHN - audio - Shorten
659	'shn' => array(
660	'pattern' => '^ajkg',
661	'group' => 'audio',
662	'module' => 'shorten',
663	'mime_type' => 'audio/xmms-shn',
664	'fail_id3' => 'ERROR',
665	'fail_ape' => 'ERROR',
666	),
667
668	// TTA - audio - TTA Lossless Audio Compressor (http://tta.corecodec.org)
669	'tta' => array(
670	'pattern' => '^TTA', // could also be '^TTA(\x01\|\x02\|\x03\|2\|1)'
671	'group' => 'audio',
672	'module' => 'tta',
673	'mime_type' => 'application/octet-stream',
674	),
675
676	// VOC - audio - Creative Voice (VOC)
677	'voc' => array(
678	'pattern' => '^Creative Voice File',
679	'group' => 'audio',
680	'module' => 'voc',
681	'mime_type' => 'audio/voc',
682	),
683
684	// VQF - audio - transform-domain weighted interleave Vector Quantization Format (VQF)
685	'vqf' => array(
686	'pattern' => '^TWIN',
687	'group' => 'audio',
688	'module' => 'vqf',
689	'mime_type' => 'application/octet-stream',
690	),
691
692	// WV - audio - WavPack (v4.0+)
693	'wv' => array(
694	'pattern' => '^wvpk',
695	'group' => 'audio',
696	'module' => 'wavpack',
697	'mime_type' => 'application/octet-stream',
698	),
699
700
701	// Audio-Video formats
702
703	// ASF - audio/video - Advanced Streaming Format, Windows Media Video, Windows Media Audio
704	'asf' => array(
705	'pattern' => '^\x30\x26\xB2\x75\x8E\x66\xCF\x11\xA6\xD9\x00\xAA\x00\x62\xCE\x6C',
706	'group' => 'audio-video',
707	'module' => 'asf',
708	'mime_type' => 'video/x-ms-asf',
709	'iconv_req' => false,
710	),
711
712	// BINK - audio/video - Bink / Smacker
713	'bink' => array(
714	'pattern' => '^(BIK\|SMK)',
715	'group' => 'audio-video',
716	'module' => 'bink',
717	'mime_type' => 'application/octet-stream',
718	),
719
720	// FLV - audio/video - FLash Video
721	'flv' => array(
722	'pattern' => '^FLV\x01',
723	'group' => 'audio-video',
724	'module' => 'flv',
725	'mime_type' => 'video/x-flv',
726	),
727
728	// MKAV - audio/video - Mastroka
729	'matroska' => array(
730	'pattern' => '^\x1A\x45\xDF\xA3',
731	'group' => 'audio-video',
732	'module' => 'matroska',
733	'mime_type' => 'video/x-matroska', // may also be audio/x-matroska
734	),
735
736	// MPEG - audio/video - MPEG (Moving Pictures Experts Group)
737	'mpeg' => array(
738	'pattern' => '^\x00\x00\x01(\xBA\|\xB3)',
739	'group' => 'audio-video',
740	'module' => 'mpeg',
741	'mime_type' => 'video/mpeg',
742	),
743
744	// NSV - audio/video - Nullsoft Streaming Video (NSV)
745	'nsv' => array(
746	'pattern' => '^NSV[sf]',
747	'group' => 'audio-video',
748	'module' => 'nsv',
749	'mime_type' => 'application/octet-stream',
750	),
751
752	// Ogg - audio/video - Ogg (Ogg-Vorbis, Ogg-FLAC, Speex, Ogg-Theora(), Ogg-Tarkin())
753	'ogg' => array(
754	'pattern' => '^OggS',
755	'group' => 'audio',
756	'module' => 'ogg',
757	'mime_type' => 'application/ogg',
758	'fail_id3' => 'WARNING',
759	'fail_ape' => 'WARNING',
760	),
761
762	// QT - audio/video - Quicktime
763	'quicktime' => array(
764	'pattern' => '^.{4}(cmov\|free\|ftyp\|mdat\|moov\|pnot\|skip\|wide)',
765	'group' => 'audio-video',
766	'module' => 'quicktime',
767	'mime_type' => 'video/quicktime',
768	),
769
770	// 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)
771	'riff' => array(
772	'pattern' => '^(RIFF\|SDSS\|FORM)',
773	'group' => 'audio-video',
774	'module' => 'riff',
775	'mime_type' => 'audio/x-wave',
776	'fail_ape' => 'WARNING',
777	),
778
779	// Real - audio/video - RealAudio, RealVideo
780	'real' => array(
781	'pattern' => '^(\\.RMF\|\\.ra)',
782	'group' => 'audio-video',
783	'module' => 'real',
784	'mime_type' => 'audio/x-realaudio',
785	),
786
787	// SWF - audio/video - ShockWave Flash
788	'swf' => array(
789	'pattern' => '^(F\|C)WS',
790	'group' => 'audio-video',
791	'module' => 'swf',
792	'mime_type' => 'application/x-shockwave-flash',
793	),
794
795
796	// Still-Image formats
797
798	// BMP - still image - Bitmap (Windows, OS/2; uncompressed, RLE8, RLE4)
799	'bmp' => array(
800	'pattern' => '^BM',
801	'group' => 'graphic',
802	'module' => 'bmp',
803	'mime_type' => 'image/bmp',
804	'fail_id3' => 'ERROR',
805	'fail_ape' => 'ERROR',
806	),
807
808	// GIF - still image - Graphics Interchange Format
809	'gif' => array(
810	'pattern' => '^GIF',
811	'group' => 'graphic',
812	'module' => 'gif',
813	'mime_type' => 'image/gif',
814	'fail_id3' => 'ERROR',
815	'fail_ape' => 'ERROR',
816	),
817
818	// JPEG - still image - Joint Photographic Experts Group (JPEG)
819	'jpg' => array(
820	'pattern' => '^\xFF\xD8\xFF',
821	'group' => 'graphic',
822	'module' => 'jpg',
823	'mime_type' => 'image/jpeg',
824	'fail_id3' => 'ERROR',
825	'fail_ape' => 'ERROR',
826	),
827
828	// PCD - still image - Kodak Photo CD
829	'pcd' => array(
830	'pattern' => '^.{2048}PCD_IPI\x00',
831	'group' => 'graphic',
832	'module' => 'pcd',
833	'mime_type' => 'image/x-photo-cd',
834	'fail_id3' => 'ERROR',
835	'fail_ape' => 'ERROR',
836	),
837
838
839	// PNG - still image - Portable Network Graphics (PNG)
840	'png' => array(
841	'pattern' => '^\x89\x50\x4E\x47\x0D\x0A\x1A\x0A',
842	'group' => 'graphic',
843	'module' => 'png',
844	'mime_type' => 'image/png',
845	'fail_id3' => 'ERROR',
846	'fail_ape' => 'ERROR',
847	),
848
849
850	// SVG - still image - Scalable Vector Graphics (SVG)
851	'svg' => array(
852	'pattern' => '<!DOCTYPE svg PUBLIC ',
853	'group' => 'graphic',
854	'module' => 'svg',
855	'mime_type' => 'image/svg+xml',
856	'fail_id3' => 'ERROR',
857	'fail_ape' => 'ERROR',
858	),
859
860
861	// TIFF - still image - Tagged Information File Format (TIFF)
862	'tiff' => array(
863	'pattern' => '^(II\x2A\x00\|MM\x00\x2A)',
864	'group' => 'graphic',
865	'module' => 'tiff',
866	'mime_type' => 'image/tiff',
867	'fail_id3' => 'ERROR',
868	'fail_ape' => 'ERROR',
869	),
870
871
872	// Data formats
873
874	// ISO - data - International Standards Organization (ISO) CD-ROM Image
875	'iso' => array(
876	'pattern' => '^.{32769}CD001',
877	'group' => 'misc',
878	'module' => 'iso',
879	'mime_type' => 'application/octet-stream',
880	'fail_id3' => 'ERROR',
881	'fail_ape' => 'ERROR',
882	'iconv_req' => false,
883	),
884
885	// RAR - data - RAR compressed data
886	'rar' => array(
887	'pattern' => '^Rar\!',
888	'group' => 'archive',
889	'module' => 'rar',
890	'mime_type' => 'application/octet-stream',
891	'fail_id3' => 'ERROR',
892	'fail_ape' => 'ERROR',
893	),
894
895	// SZIP - audio/data - SZIP compressed data
896	'szip' => array(
897	'pattern' => '^SZ\x0A\x04',
898	'group' => 'archive',
899	'module' => 'szip',
900	'mime_type' => 'application/octet-stream',
901	'fail_id3' => 'ERROR',
902	'fail_ape' => 'ERROR',
903	),
904
905	// TAR - data - TAR compressed data
906	'tar' => array(
907	'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}',
908	'group' => 'archive',
909	'module' => 'tar',
910	'mime_type' => 'application/x-tar',
911	'fail_id3' => 'ERROR',
912	'fail_ape' => 'ERROR',
913	),
914
915	// GZIP - data - GZIP compressed data
916	'gz' => array(
917	'pattern' => '^\x1F\x8B\x08',
918	'group' => 'archive',
919	'module' => 'gzip',
920	'mime_type' => 'application/x-gzip',
921	'fail_id3' => 'ERROR',
922	'fail_ape' => 'ERROR',
923	),
924
925	// ZIP - data - ZIP compressed data
926	'zip' => array(
927	'pattern' => '^PK\x03\x04',
928	'group' => 'archive',
929	'module' => 'zip',
930	'mime_type' => 'application/zip',
931	'fail_id3' => 'ERROR',
932	'fail_ape' => 'ERROR',
933	),
934
935
936	// Misc other formats
937
938	// PAR2 - data - Parity Volume Set Specification 2.0
939	'par2' => array (
940	'pattern' => '^PAR2\x00PKT',
941	'group' => 'misc',
942	'module' => 'par2',
943	'mime_type' => 'application/octet-stream',
944	'fail_id3' => 'ERROR',
945	'fail_ape' => 'ERROR',
946	),
947
948	// PDF - data - Portable Document Format
949	'pdf' => array(
950	'pattern' => '^\x25PDF',
951	'group' => 'misc',
952	'module' => 'pdf',
953	'mime_type' => 'application/pdf',
954	'fail_id3' => 'ERROR',
955	'fail_ape' => 'ERROR',
956	),
957
958	// MSOFFICE - data - ZIP compressed data
959	'msoffice' => array(
960	'pattern' => '^\xD0\xCF\x11\xE0', // D0CF11E == DOCFILE == Microsoft Office Document
961	'group' => 'misc',
962	'module' => 'msoffice',
963	'mime_type' => 'application/octet-stream',
964	'fail_id3' => 'ERROR',
965	'fail_ape' => 'ERROR',
966	),
967	);
968	}
969
970	return $format_info;
971	}
972
973
974
975	function GetFileFormat(&$filedata, $filename='') {
976	// this function will determine the format of a file based on usually
977	// the first 2-4 bytes of the file (8 bytes for PNG, 16 bytes for JPG,
978	// and in the case of ISO CD image, 6 bytes offset 32kb from the start
979	// of the file).
980
981	// Identify file format - loop through $format_info and detect with reg expr
982	foreach ($this->GetFileFormatArray() as $format_name => $info) {
983	// Using preg_match() instead of ereg() - much faster
984	// The /s switch on preg_match() forces preg_match() NOT to treat
985	// newline (0x0A) characters as special chars but do a binary match
986	if (preg_match('/'.$info['pattern'].'/s', $filedata)) {
987	$info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
988	return $info;
989	}
990	}
991
992
993	if (preg_match('/\.mp[123a]$/i', $filename)) {
994	// Too many mp3 encoders on the market put gabage in front of mpeg files
995	// use assume format on these if format detection failed
996	$GetFileFormatArray = $this->GetFileFormatArray();
997	$info = $GetFileFormatArray['mp3'];
998	$info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
999	return $info;
1000	}
1001
1002	return false;
1003	}
1004
1005
1006	// converts array to $encoding charset from $this->encoding
1007	function CharConvert(&$array, $encoding) {
1008
1009	// identical encoding - end here
1010	if ($encoding == $this->encoding) {
1011	return;
1012	}
1013
1014	// loop thru array
1015	foreach ($array as $key => $value) {
1016
1017	// go recursive
1018	if (is_array($value)) {
1019	$this->CharConvert($array[$key], $encoding);
1020	}
1021
1022	// convert string
1023	elseif (is_string($value)) {
1024	$array[$key] = trim(getid3_lib::iconv_fallback($encoding, $this->encoding, $value));
1025	}
1026	}
1027	}
1028
1029
1030	function HandleAllTags() {
1031
1032	// key name => array (tag name, character encoding)
1033	static $tags;
1034	if (empty($tags)) {
1035	$tags = array(
1036	'asf' => array('asf' , 'UTF-16LE'),
1037	'midi' => array('midi' , 'ISO-8859-1'),
1038	'nsv' => array('nsv' , 'ISO-8859-1'),
1039	'ogg' => array('vorbiscomment' , 'UTF-8'),
1040	'png' => array('png' , 'UTF-8'),
1041	'tiff' => array('tiff' , 'ISO-8859-1'),
1042	'quicktime' => array('quicktime' , 'ISO-8859-1'),
1043	'real' => array('real' , 'ISO-8859-1'),
1044	'vqf' => array('vqf' , 'ISO-8859-1'),
1045	'zip' => array('zip' , 'ISO-8859-1'),
1046	'riff' => array('riff' , 'ISO-8859-1'),
1047	'lyrics3' => array('lyrics3' , 'ISO-8859-1'),
1048	'id3v1' => array('id3v1' , $this->encoding_id3v1),
1049	'id3v2' => array('id3v2' , 'UTF-8'), // not according to the specs (every frame can have a different encoding), but getID3() force-converts all encodings to UTF-8
1050	'ape' => array('ape' , 'UTF-8')
1051	);
1052	}
1053
1054	// loop thru comments array
1055	foreach ($tags as $comment_name => $tagname_encoding_array) {
1056	list($tag_name, $encoding) = $tagname_encoding_array;
1057
1058	// fill in default encoding type if not already present
1059	if (isset($this->info[$comment_name]) && !isset($this->info[$comment_name]['encoding'])) {
1060	$this->info[$comment_name]['encoding'] = $encoding;
1061	}
1062
1063	// copy comments if key name set
1064	if (!empty($this->info[$comment_name]['comments'])) {
1065
1066	foreach ($this->info[$comment_name]['comments'] as $tag_key => $valuearray) {
1067	foreach ($valuearray as $key => $value) {
1068	if (strlen(trim($value)) > 0) {
1069	$this->info['tags'][trim($tag_name)][trim($tag_key)][] = $value; // do not trim!! Unicode characters will get mangled if trailing nulls are removed!
1070	}
1071	}
1072	}
1073
1074	if (!isset($this->info['tags'][$tag_name])) {
1075	// comments are set but contain nothing but empty strings, so skip
1076	continue;
1077	}
1078
1079	if ($this->option_tags_html) {
1080	foreach ($this->info['tags'][$tag_name] as $tag_key => $valuearray) {
1081	foreach ($valuearray as $key => $value) {
1082	if (is_string($value)) {
1083	//$this->info['tags_html'][$tag_name][$tag_key][$key] = getid3_lib::MultiByteCharString2HTML($value, $encoding);
1084	$this->info['tags_html'][$tag_name][$tag_key][$key] = str_replace('', '', getid3_lib::MultiByteCharString2HTML($value, $encoding));
1085	} else {
1086	$this->info['tags_html'][$tag_name][$tag_key][$key] = $value;
1087	}
1088	}
1089	}
1090	}
1091
1092	$this->CharConvert($this->info['tags'][$tag_name], $encoding); // only copy gets converted!
1093	}
1094
1095	}
1096	return true;
1097	}
1098
1099
1100	function getHashdata($algorithm) {
1101	switch ($algorithm) {
1102	case 'md5':
1103	case 'sha1':
1104	break;
1105
1106	default:
1107	return $this->error('bad algorithm "'.$algorithm.'" in getHashdata()');
1108	break;
1109	}
1110
1111	if ((@$this->info['fileformat'] == 'ogg') && (@$this->info['audio']['dataformat'] == 'vorbis')) {
1112
1113	// We cannot get an identical md5_data value for Ogg files where the comments
1114	// span more than 1 Ogg page (compared to the same audio data with smaller
1115	// comments) using the normal getID3() method of MD5'ing the data between the
1116	// end of the comments and the end of the file (minus any trailing tags),
1117	// because the page sequence numbers of the pages that the audio data is on
1118	// do not match. Under normal circumstances, where comments are smaller than
1119	// the nominal 4-8kB page size, then this is not a problem, but if there are
1120	// very large comments, the only way around it is to strip off the comment
1121	// tags with vorbiscomment and MD5 that file.
1122	// This procedure must be applied to ALL Ogg files, not just the ones with
1123	// comments larger than 1 page, because the below method simply MD5's the
1124	// whole file with the comments stripped, not just the portion after the
1125	// comments block (which is the standard getID3() method.
1126
1127	// The above-mentioned problem of comments spanning multiple pages and changing
1128	// page sequence numbers likely happens for OggSpeex and OggFLAC as well, but
1129	// currently vorbiscomment only works on OggVorbis files.
1130
1131	if ((bool) ini_get('safe_mode')) {
1132
1133	$this->info['warning'][] = 'Failed making system call to vorbiscomment.exe - '.$algorithm.'_data is incorrect - error returned: PHP running in Safe Mode (backtick operator not available)';
1134	$this->info[$algorithm.'_data'] = false;
1135
1136	} else {
1137
1138	// Prevent user from aborting script
1139	$old_abort = ignore_user_abort(true);
1140
1141	// Create empty file
1142	$empty = tempnam('*', 'getID3');
1143	touch($empty);
1144
1145
1146	// Use vorbiscomment to make temp file without comments
1147	$temp = tempnam('*', 'getID3');
1148	$file = $this->info['filenamepath'];
1149
1150	if (GETID3_OS_ISWINDOWS) {
1151
1152	if (file_exists(GETID3_HELPERAPPSDIR.'vorbiscomment.exe')) {
1153
1154	$commandline = '"'.GETID3_HELPERAPPSDIR.'vorbiscomment.exe" -w -c "'.$empty.'" "'.$file.'" "'.$temp.'"';
1155	$VorbisCommentError = `$commandline`;
1156
1157	} else {
1158
1159	$VorbisCommentError = 'vorbiscomment.exe not found in '.GETID3_HELPERAPPSDIR;
1160
1161	}
1162
1163	} else {
1164
1165	$commandline = 'vorbiscomment -w -c "'.$empty.'" "'.$file.'" "'.$temp.'" 2>&1';
1166	$commandline = 'vorbiscomment -w -c '.escapeshellarg($empty).' '.escapeshellarg($file).' '.escapeshellarg($temp).' 2>&1';
1167	$VorbisCommentError = `$commandline`;
1168
1169	}
1170
1171	if (!empty($VorbisCommentError)) {
1172
1173	$this->info['warning'][] = 'Failed making system call to vorbiscomment(.exe) - '.$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;
1174	$this->info[$algorithm.'_data'] = false;
1175
1176	} else {
1177
1178	// Get hash of newly created file
1179	switch ($algorithm) {
1180	case 'md5':
1181	$this->info[$algorithm.'_data'] = getid3_lib::md5_file($temp);
1182	break;
1183
1184	case 'sha1':
1185	$this->info[$algorithm.'_data'] = getid3_lib::sha1_file($temp);
1186	break;
1187	}
1188	}
1189
1190	// Clean up
1191	unlink($empty);
1192	unlink($temp);
1193
1194	// Reset abort setting
1195	ignore_user_abort($old_abort);
1196
1197	}
1198
1199	} else {
1200
1201	if (!empty($this->info['avdataoffset']) \|\| (isset($this->info['avdataend']) && ($this->info['avdataend'] < $this->info['filesize']))) {
1202
1203	// get hash from part of file
1204	$this->info[$algorithm.'_data'] = getid3_lib::hash_data($this->info['filenamepath'], $this->info['avdataoffset'], $this->info['avdataend'], $algorithm);
1205
1206	} else {
1207
1208	// get hash from whole file
1209	switch ($algorithm) {
1210	case 'md5':
1211	$this->info[$algorithm.'_data'] = getid3_lib::md5_file($this->info['filenamepath']);
1212	break;
1213
1214	case 'sha1':
1215	$this->info[$algorithm.'_data'] = getid3_lib::sha1_file($this->info['filenamepath']);
1216	break;
1217	}
1218	}
1219
1220	}
1221	return true;
1222	}
1223
1224
1225	function ChannelsBitratePlaytimeCalculations() {
1226
1227	// set channelmode on audio
1228	if (@$this->info['audio']['channels'] == '1') {
1229	$this->info['audio']['channelmode'] = 'mono';
1230	} elseif (@$this->info['audio']['channels'] == '2') {
1231	$this->info['audio']['channelmode'] = 'stereo';
1232	}
1233
1234	// Calculate combined bitrate - audio + video
1235	$CombinedBitrate = 0;
1236	$CombinedBitrate += (isset($this->info['audio']['bitrate']) ? $this->info['audio']['bitrate'] : 0);
1237	$CombinedBitrate += (isset($this->info['video']['bitrate']) ? $this->info['video']['bitrate'] : 0);
1238	if (($CombinedBitrate > 0) && empty($this->info['bitrate'])) {
1239	$this->info['bitrate'] = $CombinedBitrate;
1240	}
1241	//if ((isset($this->info['video']) && !isset($this->info['video']['bitrate'])) \|\| (isset($this->info['audio']) && !isset($this->info['audio']['bitrate']))) {
1242	// // for example, VBR MPEG video files cannot determine video bitrate:
1243	// // should not set overall bitrate and playtime from audio bitrate only
1244	// unset($this->info['bitrate']);
1245	//}
1246
1247	// video bitrate undetermined, but calculable
1248	if (isset($this->info['video']['dataformat']) && $this->info['video']['dataformat'] && (!isset($this->info['video']['bitrate']) \|\| ($this->info['video']['bitrate'] == 0))) {
1249	// if video bitrate not set
1250	if (isset($this->info['audio']['bitrate']) && ($this->info['audio']['bitrate'] > 0) && ($this->info['audio']['bitrate'] == $this->info['bitrate'])) {
1251	// AND if audio bitrate is set to same as overall bitrate
1252	if (isset($this->info['playtime_seconds']) && ($this->info['playtime_seconds'] > 0)) {
1253	// AND if playtime is set
1254	if (isset($this->info['avdataend']) && isset($this->info['avdataoffset'])) {
1255	// AND if AV data offset start/end is known
1256	// THEN we can calculate the video bitrate
1257	$this->info['bitrate'] = round((($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['playtime_seconds']);
1258	$this->info['video']['bitrate'] = $this->info['bitrate'] - $this->info['audio']['bitrate'];
1259	}
1260	}
1261	}
1262	}
1263
1264	if ((!isset($this->info['playtime_seconds']) \|\| ($this->info['playtime_seconds'] <= 0)) && !empty($this->info['bitrate'])) {
1265	$this->info['playtime_seconds'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['bitrate'];
1266	}
1267
1268	if (!isset($this->info['bitrate']) && !empty($this->info['playtime_seconds'])) {
1269	$this->info['bitrate'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['playtime_seconds'];
1270	}
1271	//echo '<pre>';
1272	//var_dump($this->info['bitrate']);
1273	//var_dump($this->info['audio']['bitrate']);
1274	//var_dump($this->info['video']['bitrate']);
1275	//echo '</pre>';
1276	if (isset($this->info['bitrate']) && empty($this->info['audio']['bitrate']) && empty($this->info['video']['bitrate'])) {
1277	if (isset($this->info['audio']['dataformat']) && empty($this->info['video']['resolution_x'])) {
1278	// audio only
1279	$this->info['audio']['bitrate'] = $this->info['bitrate'];
1280	} elseif (isset($this->info['video']['resolution_x']) && empty($this->info['audio']['dataformat'])) {
1281	// video only
1282	$this->info['video']['bitrate'] = $this->info['bitrate'];
1283	}
1284	}
1285
1286	// Set playtime string
1287	if (!empty($this->info['playtime_seconds']) && empty($this->info['playtime_string'])) {
1288	$this->info['playtime_string'] = getid3_lib::PlaytimeString($this->info['playtime_seconds']);
1289	}
1290	}
1291
1292
1293	function CalculateCompressionRatioVideo() {
1294	if (empty($this->info['video'])) {
1295	return false;
1296	}
1297	if (empty($this->info['video']['resolution_x']) \|\| empty($this->info['video']['resolution_y'])) {
1298	return false;
1299	}
1300	if (empty($this->info['video']['bits_per_sample'])) {
1301	return false;
1302	}
1303
1304	switch ($this->info['video']['dataformat']) {
1305	case 'bmp':
1306	case 'gif':
1307	case 'jpeg':
1308	case 'jpg':
1309	case 'png':
1310	case 'tiff':
1311	$FrameRate = 1;
1312	$PlaytimeSeconds = 1;
1313	$BitrateCompressed = $this->info['filesize'] * 8;
1314	break;
1315
1316	default:
1317	if (!empty($this->info['video']['frame_rate'])) {
1318	$FrameRate = $this->info['video']['frame_rate'];
1319	} else {
1320	return false;
1321	}
1322	if (!empty($this->info['playtime_seconds'])) {
1323	$PlaytimeSeconds = $this->info['playtime_seconds'];
1324	} else {
1325	return false;
1326	}
1327	if (!empty($this->info['video']['bitrate'])) {
1328	$BitrateCompressed = $this->info['video']['bitrate'];
1329	} else {
1330	return false;
1331	}
1332	break;
1333	}
1334	$BitrateUncompressed = $this->info['video']['resolution_x'] * $this->info['video']['resolution_y'] * $this->info['video']['bits_per_sample'] * $FrameRate;
1335
1336	$this->info['video']['compression_ratio'] = $BitrateCompressed / $BitrateUncompressed;
1337	return true;
1338	}
1339
1340
1341	function CalculateCompressionRatioAudio() {
1342	if (empty($this->info['audio']['bitrate']) \|\| empty($this->info['audio']['channels']) \|\| empty($this->info['audio']['sample_rate'])) {
1343	return false;
1344	}
1345	$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']) ? $this->info['audio']['bits_per_sample'] : 16));
1346
1347	if (!empty($this->info['audio']['streams'])) {
1348	foreach ($this->info['audio']['streams'] as $streamnumber => $streamdata) {
1349	if (!empty($streamdata['bitrate']) && !empty($streamdata['channels']) && !empty($streamdata['sample_rate'])) {
1350	$this->info['audio']['streams'][$streamnumber]['compression_ratio'] = $streamdata['bitrate'] / ($streamdata['channels'] * $streamdata['sample_rate'] * (!empty($streamdata['bits_per_sample']) ? $streamdata['bits_per_sample'] : 16));
1351	}
1352	}
1353	}
1354	return true;
1355	}
1356
1357
1358	function CalculateReplayGain() {
1359	if (isset($this->info['replay_gain'])) {
1360	$this->info['replay_gain']['reference_volume'] = 89;
1361	if (isset($this->info['replay_gain']['track']['adjustment'])) {
1362	$this->info['replay_gain']['track']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['track']['adjustment'];
1363	}
1364	if (isset($this->info['replay_gain']['album']['adjustment'])) {
1365	$this->info['replay_gain']['album']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['album']['adjustment'];
1366	}
1367
1368	if (isset($this->info['replay_gain']['track']['peak'])) {
1369	$this->info['replay_gain']['track']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['track']['peak']);
1370	}
1371	if (isset($this->info['replay_gain']['album']['peak'])) {
1372	$this->info['replay_gain']['album']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['album']['peak']);
1373	}
1374	}
1375	return true;
1376	}
1377
1378	function ProcessAudioStreams() {
1379	if (!empty($this->info['audio']['bitrate']) \|\| !empty($this->info['audio']['channels']) \|\| !empty($this->info['audio']['sample_rate'])) {
1380	if (!isset($this->info['audio']['streams'])) {
1381	foreach ($this->info['audio'] as $key => $value) {
1382	if ($key != 'streams') {
1383	$this->info['audio']['streams'][0][$key] = $value;
1384	}
1385	}
1386	}
1387	}
1388	return true;
1389	}
1390
1391	function getid3_tempnam() {
1392	return tempnam($this->tempdir, 'gI3');
1393	}
1394
1395	}
1396
1397	?>

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source: extensions/charlies_content/getid3/getid3/getid3.php @ 3544

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