808f5921685152ea0f65b9ea8ceec175b758c48e
2 /////////////////////////////////////////////////////////////////
3 /// getID3() by James Heinrich <info@getid3.org> //
4 // available at http://getid3.sourceforge.net //
5 // or http://www.getid3.org //
6 // also https://github.com/JamesHeinrich/getID3 //
7 /////////////////////////////////////////////////////////////////
9 // getid3.lib.php - part of getID3() //
10 // See readme.txt for more details //
12 /////////////////////////////////////////////////////////////////
18 public static function PrintHexBytes($string, $hex=true, $spaces=true, $htmlencoding='UTF-8') {
20 for ($i = 0; $i < strlen($string); $i++
) {
22 $returnstring .= str_pad(dechex(ord($string{$i})), 2, '0', STR_PAD_LEFT
);
24 $returnstring .= ' '.(preg_match("#[\x20-\x7E]#", $string{$i}) ?
$string{$i} : 'ยค');
30 if (!empty($htmlencoding)) {
31 if ($htmlencoding === true) {
32 $htmlencoding = 'UTF-8'; // prior to getID3 v1.9.0 the function's 4th parameter was boolean
34 $returnstring = htmlentities($returnstring, ENT_QUOTES
, $htmlencoding);
39 public static function trunc($floatnumber) {
40 // truncates a floating-point number at the decimal point
41 // returns int (if possible, otherwise float)
42 if ($floatnumber >= 1) {
43 $truncatednumber = floor($floatnumber);
44 } elseif ($floatnumber <= -1) {
45 $truncatednumber = ceil($floatnumber);
49 if (self
::intValueSupported($truncatednumber)) {
50 $truncatednumber = (int) $truncatednumber;
52 return $truncatednumber;
56 public static function safe_inc(&$variable, $increment=1) {
57 if (isset($variable)) {
58 $variable +
= $increment;
60 $variable = $increment;
65 public static function CastAsInt($floatnum) {
66 // convert to float if not already
67 $floatnum = (float) $floatnum;
69 // convert a float to type int, only if possible
70 if (self
::trunc($floatnum) == $floatnum) {
71 // it's not floating point
72 if (self
::intValueSupported($floatnum)) {
73 // it's within int range
74 $floatnum = (int) $floatnum;
80 public static function intValueSupported($num) {
81 // check if integers are 64-bit
82 static $hasINT64 = null;
83 if ($hasINT64 === null) { // 10x faster than is_null()
84 $hasINT64 = is_int(pow(2, 31)); // 32-bit int are limited to (2^31)-1
85 if (!$hasINT64 && !defined('PHP_INT_MIN')) {
86 define('PHP_INT_MIN', ~PHP_INT_MAX
);
89 // if integers are 64-bit - no other check required
90 if ($hasINT64 ||
(($num <= PHP_INT_MAX
) && ($num >= PHP_INT_MIN
))) {
96 public static function DecimalizeFraction($fraction) {
97 list($numerator, $denominator) = explode('/', $fraction);
98 return $numerator / ($denominator ?
$denominator : 1);
102 public static function DecimalBinary2Float($binarynumerator) {
103 $numerator = self
::Bin2Dec($binarynumerator);
104 $denominator = self
::Bin2Dec('1'.str_repeat('0', strlen($binarynumerator)));
105 return ($numerator / $denominator);
109 public static function NormalizeBinaryPoint($binarypointnumber, $maxbits=52) {
110 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
111 if (strpos($binarypointnumber, '.') === false) {
112 $binarypointnumber = '0.'.$binarypointnumber;
113 } elseif ($binarypointnumber{0} == '.') {
114 $binarypointnumber = '0'.$binarypointnumber;
117 while (($binarypointnumber{0} != '1') ||
(substr($binarypointnumber, 1, 1) != '.')) {
118 if (substr($binarypointnumber, 1, 1) == '.') {
120 $binarypointnumber = substr($binarypointnumber, 2, 1).'.'.substr($binarypointnumber, 3);
122 $pointpos = strpos($binarypointnumber, '.');
123 $exponent +
= ($pointpos - 1);
124 $binarypointnumber = str_replace('.', '', $binarypointnumber);
125 $binarypointnumber = $binarypointnumber{0}.'.'.substr($binarypointnumber, 1);
128 $binarypointnumber = str_pad(substr($binarypointnumber, 0, $maxbits +
2), $maxbits +
2, '0', STR_PAD_RIGHT
);
129 return array('normalized'=>$binarypointnumber, 'exponent'=>(int) $exponent);
133 public static function Float2BinaryDecimal($floatvalue) {
134 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/binary.html
135 $maxbits = 128; // to how many bits of precision should the calculations be taken?
136 $intpart = self
::trunc($floatvalue);
137 $floatpart = abs($floatvalue - $intpart);
138 $pointbitstring = '';
139 while (($floatpart != 0) && (strlen($pointbitstring) < $maxbits)) {
141 $pointbitstring .= (string) self
::trunc($floatpart);
142 $floatpart -= self
::trunc($floatpart);
144 $binarypointnumber = decbin($intpart).'.'.$pointbitstring;
145 return $binarypointnumber;
149 public static function Float2String($floatvalue, $bits) {
150 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee-expl.html
166 if ($floatvalue >= 0) {
171 $normalizedbinary = self
::NormalizeBinaryPoint(self
::Float2BinaryDecimal($floatvalue), $fractionbits);
172 $biasedexponent = pow(2, $exponentbits - 1) - 1 +
$normalizedbinary['exponent']; // (127 or 1023) +/- exponent
173 $exponentbitstring = str_pad(decbin($biasedexponent), $exponentbits, '0', STR_PAD_LEFT
);
174 $fractionbitstring = str_pad(substr($normalizedbinary['normalized'], 2), $fractionbits, '0', STR_PAD_RIGHT
);
176 return self
::BigEndian2String(self
::Bin2Dec($signbit.$exponentbitstring.$fractionbitstring), $bits %
8, false);
180 public static function LittleEndian2Float($byteword) {
181 return self
::BigEndian2Float(strrev($byteword));
185 public static function BigEndian2Float($byteword) {
186 // ANSI/IEEE Standard 754-1985, Standard for Binary Floating Point Arithmetic
187 // http://www.psc.edu/general/software/packages/ieee/ieee.html
188 // http://www.scri.fsu.edu/~jac/MAD3401/Backgrnd/ieee.html
190 $bitword = self
::BigEndian2Bin($byteword);
194 $signbit = $bitword{0};
196 switch (strlen($byteword) * 8) {
208 // 80-bit Apple SANE format
209 // http://www.mactech.com/articles/mactech/Vol.06/06.01/SANENormalized/
210 $exponentstring = substr($bitword, 1, 15);
211 $isnormalized = intval($bitword{16});
212 $fractionstring = substr($bitword, 17, 63);
213 $exponent = pow(2, self
::Bin2Dec($exponentstring) - 16383);
214 $fraction = $isnormalized + self
::DecimalBinary2Float($fractionstring);
215 $floatvalue = $exponent * $fraction;
216 if ($signbit == '1') {
226 $exponentstring = substr($bitword, 1, $exponentbits);
227 $fractionstring = substr($bitword, $exponentbits +
1, $fractionbits);
228 $exponent = self
::Bin2Dec($exponentstring);
229 $fraction = self
::Bin2Dec($fractionstring);
231 if (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction != 0)) {
234 } elseif (($exponent == (pow(2, $exponentbits) - 1)) && ($fraction == 0)) {
235 if ($signbit == '1') {
236 $floatvalue = '-infinity';
238 $floatvalue = '+infinity';
240 } elseif (($exponent == 0) && ($fraction == 0)) {
241 if ($signbit == '1') {
246 $floatvalue = ($signbit ?
0 : -0);
247 } elseif (($exponent == 0) && ($fraction != 0)) {
248 // These are 'unnormalized' values
249 $floatvalue = pow(2, (-1 * (pow(2, $exponentbits - 1) - 2))) * self
::DecimalBinary2Float($fractionstring);
250 if ($signbit == '1') {
253 } elseif ($exponent != 0) {
254 $floatvalue = pow(2, ($exponent - (pow(2, $exponentbits - 1) - 1))) * (1 + self
::DecimalBinary2Float($fractionstring));
255 if ($signbit == '1') {
259 return (float) $floatvalue;
263 public static function BigEndian2Int($byteword, $synchsafe=false, $signed=false) {
265 $bytewordlen = strlen($byteword);
266 if ($bytewordlen == 0) {
269 for ($i = 0; $i < $bytewordlen; $i++
) {
270 if ($synchsafe) { // disregard MSB, effectively 7-bit bytes
271 //$intvalue = $intvalue | (ord($byteword{$i}) & 0x7F) << (($bytewordlen - 1 - $i) * 7); // faster, but runs into problems past 2^31 on 32-bit systems
272 $intvalue +
= (ord($byteword{$i}) & 0x7F) * pow(2, ($bytewordlen - 1 - $i) * 7);
274 $intvalue +
= ord($byteword{$i}) * pow(256, ($bytewordlen - 1 - $i));
277 if ($signed && !$synchsafe) {
278 // synchsafe ints are not allowed to be signed
279 if ($bytewordlen <= PHP_INT_SIZE
) {
280 $signMaskBit = 0x80 << (8 * ($bytewordlen - 1));
281 if ($intvalue & $signMaskBit) {
282 $intvalue = 0 - ($intvalue & ($signMaskBit - 1));
285 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE
).'-bits ('.strlen($byteword).') in self::BigEndian2Int()');
288 return self
::CastAsInt($intvalue);
292 public static function LittleEndian2Int($byteword, $signed=false) {
293 return self
::BigEndian2Int(strrev($byteword), false, $signed);
297 public static function BigEndian2Bin($byteword) {
299 $bytewordlen = strlen($byteword);
300 for ($i = 0; $i < $bytewordlen; $i++
) {
301 $binvalue .= str_pad(decbin(ord($byteword{$i})), 8, '0', STR_PAD_LEFT
);
307 public static function BigEndian2String($number, $minbytes=1, $synchsafe=false, $signed=false) {
309 throw new Exception('ERROR: self::BigEndian2String() does not support negative numbers');
311 $maskbyte = (($synchsafe ||
$signed) ?
0x7F : 0xFF);
314 if ($minbytes > PHP_INT_SIZE
) {
315 throw new Exception('ERROR: Cannot have signed integers larger than '.(8 * PHP_INT_SIZE
).'-bits in self::BigEndian2String()');
317 $number = $number & (0x80 << (8 * ($minbytes - 1)));
319 while ($number != 0) {
320 $quotient = ($number / ($maskbyte +
1));
321 $intstring = chr(ceil(($quotient - floor($quotient)) * $maskbyte)).$intstring;
322 $number = floor($quotient);
324 return str_pad($intstring, $minbytes, "\x00", STR_PAD_LEFT
);
328 public static function Dec2Bin($number) {
329 while ($number >= 256) {
330 $bytes[] = (($number / 256) - (floor($number / 256))) * 256;
331 $number = floor($number / 256);
335 for ($i = 0; $i < count($bytes); $i++
) {
336 $binstring = (($i == count($bytes) - 1) ?
decbin($bytes[$i]) : str_pad(decbin($bytes[$i]), 8, '0', STR_PAD_LEFT
)).$binstring;
342 public static function Bin2Dec($binstring, $signed=false) {
345 if ($binstring{0} == '1') {
348 $binstring = substr($binstring, 1);
351 for ($i = 0; $i < strlen($binstring); $i++
) {
352 $decvalue +
= ((int) substr($binstring, strlen($binstring) - $i - 1, 1)) * pow(2, $i);
354 return self
::CastAsInt($decvalue * $signmult);
358 public static function Bin2String($binstring) {
359 // return 'hi' for input of '0110100001101001'
361 $binstringreversed = strrev($binstring);
362 for ($i = 0; $i < strlen($binstringreversed); $i +
= 8) {
363 $string = chr(self
::Bin2Dec(strrev(substr($binstringreversed, $i, 8)))).$string;
369 public static function LittleEndian2String($number, $minbytes=1, $synchsafe=false) {
371 while ($number > 0) {
373 $intstring = $intstring.chr($number & 127);
376 $intstring = $intstring.chr($number & 255);
380 return str_pad($intstring, $minbytes, "\x00", STR_PAD_RIGHT
);
384 public static function array_merge_clobber($array1, $array2) {
385 // written by kcรhireability*com
386 // taken from http://www.php.net/manual/en/function.array-merge-recursive.php
387 if (!is_array($array1) ||
!is_array($array2)) {
391 foreach ($array2 as $key => $val) {
392 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
393 $newarray[$key] = self
::array_merge_clobber($newarray[$key], $val);
395 $newarray[$key] = $val;
402 public static function array_merge_noclobber($array1, $array2) {
403 if (!is_array($array1) ||
!is_array($array2)) {
407 foreach ($array2 as $key => $val) {
408 if (is_array($val) && isset($newarray[$key]) && is_array($newarray[$key])) {
409 $newarray[$key] = self
::array_merge_noclobber($newarray[$key], $val);
410 } elseif (!isset($newarray[$key])) {
411 $newarray[$key] = $val;
417 public static function flipped_array_merge_noclobber($array1, $array2) {
418 if (!is_array($array1) ||
!is_array($array2)) {
421 # naturally, this only works non-recursively
422 $newarray = array_flip($array1);
423 foreach (array_flip($array2) as $key => $val) {
424 if (!isset($newarray[$key])) {
425 $newarray[$key] = count($newarray);
428 return array_flip($newarray);
432 public static function ksort_recursive(&$theArray) {
434 foreach ($theArray as $key => $value) {
435 if (is_array($value)) {
436 self
::ksort_recursive($theArray[$key]);
442 public static function fileextension($filename, $numextensions=1) {
443 if (strstr($filename, '.')) {
444 $reversedfilename = strrev($filename);
446 for ($i = 0; $i < $numextensions; $i++
) {
447 $offset = strpos($reversedfilename, '.', $offset +
1);
448 if ($offset === false) {
452 return strrev(substr($reversedfilename, 0, $offset));
458 public static function PlaytimeString($seconds) {
459 $sign = (($seconds < 0) ?
'-' : '');
460 $seconds = round(abs($seconds));
461 $H = (int) floor( $seconds / 3600);
462 $M = (int) floor(($seconds - (3600 * $H) ) / 60);
463 $S = (int) round( $seconds - (3600 * $H) - (60 * $M) );
464 return $sign.($H ?
$H.':' : '').($H ?
str_pad($M, 2, '0', STR_PAD_LEFT
) : intval($M)).':'.str_pad($S, 2, 0, STR_PAD_LEFT
);
468 public static function DateMac2Unix($macdate) {
469 // Macintosh timestamp: seconds since 00:00h January 1, 1904
470 // UNIX timestamp: seconds since 00:00h January 1, 1970
471 return self
::CastAsInt($macdate - 2082844800);
475 public static function FixedPoint8_8($rawdata) {
476 return self
::BigEndian2Int(substr($rawdata, 0, 1)) +
(float) (self
::BigEndian2Int(substr($rawdata, 1, 1)) / pow(2, 8));
480 public static function FixedPoint16_16($rawdata) {
481 return self
::BigEndian2Int(substr($rawdata, 0, 2)) +
(float) (self
::BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
485 public static function FixedPoint2_30($rawdata) {
486 $binarystring = self
::BigEndian2Bin($rawdata);
487 return self
::Bin2Dec(substr($binarystring, 0, 2)) +
(float) (self
::Bin2Dec(substr($binarystring, 2, 30)) / pow(2, 30));
491 public static function CreateDeepArray($ArrayPath, $Separator, $Value) {
492 // assigns $Value to a nested array path:
493 // $foo = self::CreateDeepArray('/path/to/my', '/', 'file.txt')
495 // $foo = array('path'=>array('to'=>'array('my'=>array('file.txt'))));
497 // $foo['path']['to']['my'] = 'file.txt';
498 $ArrayPath = ltrim($ArrayPath, $Separator);
499 if (($pos = strpos($ArrayPath, $Separator)) !== false) {
500 $ReturnedArray[substr($ArrayPath, 0, $pos)] = self
::CreateDeepArray(substr($ArrayPath, $pos +
1), $Separator, $Value);
502 $ReturnedArray[$ArrayPath] = $Value;
504 return $ReturnedArray;
507 public static function array_max($arraydata, $returnkey=false) {
510 foreach ($arraydata as $key => $value) {
511 if (!is_array($value)) {
512 if ($value > $maxvalue) {
518 return ($returnkey ?
$maxkey : $maxvalue);
521 public static function array_min($arraydata, $returnkey=false) {
524 foreach ($arraydata as $key => $value) {
525 if (!is_array($value)) {
526 if ($value > $minvalue) {
532 return ($returnkey ?
$minkey : $minvalue);
535 public static function XML2array($XMLstring) {
536 if (function_exists('simplexml_load_string') && function_exists('libxml_disable_entity_loader')) {
537 // http://websec.io/2012/08/27/Preventing-XEE-in-PHP.html
538 // https://core.trac.wordpress.org/changeset/29378
539 $loader = libxml_disable_entity_loader(true);
540 $XMLobject = simplexml_load_string($XMLstring, 'SimpleXMLElement', LIBXML_NOENT
);
541 $return = self
::SimpleXMLelement2array($XMLobject);
542 libxml_disable_entity_loader($loader);
548 public static function SimpleXMLelement2array($XMLobject) {
549 if (!is_object($XMLobject) && !is_array($XMLobject)) {
552 $XMLarray = (is_object($XMLobject) ?
get_object_vars($XMLobject) : $XMLobject);
553 foreach ($XMLarray as $key => $value) {
554 $XMLarray[$key] = self
::SimpleXMLelement2array($value);
560 // Allan Hansen <ahรartemis*dk>
561 // self::md5_data() - returns md5sum for a file from startuing position to absolute end position
562 public static function hash_data($file, $offset, $end, $algorithm) {
563 static $tempdir = '';
564 if (!self
::intValueSupported($end)) {
567 switch ($algorithm) {
569 $hash_function = 'md5_file';
570 $unix_call = 'md5sum';
571 $windows_call = 'md5sum.exe';
576 $hash_function = 'sha1_file';
577 $unix_call = 'sha1sum';
578 $windows_call = 'sha1sum.exe';
583 throw new Exception('Invalid algorithm ('.$algorithm.') in self::hash_data()');
586 $size = $end - $offset;
588 if (GETID3_OS_ISWINDOWS
) {
590 // It seems that sha1sum.exe for Windows only works on physical files, does not accept piped data
591 // Fall back to create-temp-file method:
592 if ($algorithm == 'sha1') {
596 $RequiredFiles = array('cygwin1.dll', 'head.exe', 'tail.exe', $windows_call);
597 foreach ($RequiredFiles as $required_file) {
598 if (!is_readable(GETID3_HELPERAPPSDIR
.$required_file)) {
599 // helper apps not available - fall back to old method
603 $commandline = GETID3_HELPERAPPSDIR
.'head.exe -c '.$end.' '.escapeshellarg(str_replace('/', DIRECTORY_SEPARATOR
, $file)).' | ';
604 $commandline .= GETID3_HELPERAPPSDIR
.'tail.exe -c '.$size.' | ';
605 $commandline .= GETID3_HELPERAPPSDIR
.$windows_call;
609 $commandline = 'head -c'.$end.' '.escapeshellarg($file).' | ';
610 $commandline .= 'tail -c'.$size.' | ';
611 $commandline .= $unix_call;
614 if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
615 //throw new Exception('PHP running in Safe Mode - backtick operator not available, using slower non-system-call '.$algorithm.' algorithm');
618 return substr(`
$commandline`
, 0, $hash_length);
621 if (empty($tempdir)) {
622 // yes this is ugly, feel free to suggest a better way
623 require_once(dirname(__FILE__
).'/getid3.php');
624 $getid3_temp = new getID3();
625 $tempdir = $getid3_temp->tempdir
;
628 // try to create a temporary file in the system temp directory - invalid dirname should force to system temp dir
629 if (($data_filename = tempnam($tempdir, 'gI3')) === false) {
630 // can't find anywhere to create a temp file, just fail
637 // copy parts of file
639 self
::CopyFileParts($file, $data_filename, $offset, $end - $offset);
640 $result = $hash_function($data_filename);
641 } catch (Exception
$e) {
642 throw new Exception('self::CopyFileParts() failed in getid_lib::hash_data(): '.$e->getMessage());
644 unlink($data_filename);
648 public static function CopyFileParts($filename_source, $filename_dest, $offset, $length) {
649 if (!self
::intValueSupported($offset +
$length)) {
650 throw new Exception('cannot copy file portion, it extends beyond the '.round(PHP_INT_MAX
/ 1073741824).'GB limit');
652 if (is_readable($filename_source) && is_file($filename_source) && ($fp_src = fopen($filename_source, 'rb'))) {
653 if (($fp_dest = fopen($filename_dest, 'wb'))) {
654 if (fseek($fp_src, $offset) == 0) {
655 $byteslefttowrite = $length;
656 while (($byteslefttowrite > 0) && ($buffer = fread($fp_src, min($byteslefttowrite, getID3
::FREAD_BUFFER_SIZE
)))) {
657 $byteswritten = fwrite($fp_dest, $buffer, $byteslefttowrite);
658 $byteslefttowrite -= $byteswritten;
662 throw new Exception('failed to seek to offset '.$offset.' in '.$filename_source);
666 throw new Exception('failed to create file for writing '.$filename_dest);
670 throw new Exception('failed to open file for reading '.$filename_source);
675 public static function iconv_fallback_int_utf8($charval) {
676 if ($charval < 128) {
678 $newcharstring = chr($charval);
679 } elseif ($charval < 2048) {
681 $newcharstring = chr(($charval >> 6) |
0xC0);
682 $newcharstring .= chr(($charval & 0x3F) |
0x80);
683 } elseif ($charval < 65536) {
684 // 1110bbbb 10bbbbbb 10bbbbbb
685 $newcharstring = chr(($charval >> 12) |
0xE0);
686 $newcharstring .= chr(($charval >> 6) |
0xC0);
687 $newcharstring .= chr(($charval & 0x3F) |
0x80);
689 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
690 $newcharstring = chr(($charval >> 18) |
0xF0);
691 $newcharstring .= chr(($charval >> 12) |
0xC0);
692 $newcharstring .= chr(($charval >> 6) |
0xC0);
693 $newcharstring .= chr(($charval & 0x3F) |
0x80);
695 return $newcharstring;
698 // ISO-8859-1 => UTF-8
699 public static function iconv_fallback_iso88591_utf8($string, $bom=false) {
700 if (function_exists('utf8_encode')) {
701 return utf8_encode($string);
703 // utf8_encode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
706 $newcharstring .= "\xEF\xBB\xBF";
708 for ($i = 0; $i < strlen($string); $i++
) {
709 $charval = ord($string{$i});
710 $newcharstring .= self
::iconv_fallback_int_utf8($charval);
712 return $newcharstring;
715 // ISO-8859-1 => UTF-16BE
716 public static function iconv_fallback_iso88591_utf16be($string, $bom=false) {
719 $newcharstring .= "\xFE\xFF";
721 for ($i = 0; $i < strlen($string); $i++
) {
722 $newcharstring .= "\x00".$string{$i};
724 return $newcharstring;
727 // ISO-8859-1 => UTF-16LE
728 public static function iconv_fallback_iso88591_utf16le($string, $bom=false) {
731 $newcharstring .= "\xFF\xFE";
733 for ($i = 0; $i < strlen($string); $i++
) {
734 $newcharstring .= $string{$i}."\x00";
736 return $newcharstring;
739 // ISO-8859-1 => UTF-16LE (BOM)
740 public static function iconv_fallback_iso88591_utf16($string) {
741 return self
::iconv_fallback_iso88591_utf16le($string, true);
744 // UTF-8 => ISO-8859-1
745 public static function iconv_fallback_utf8_iso88591($string) {
746 if (function_exists('utf8_decode')) {
747 return utf8_decode($string);
749 // utf8_decode() unavailable, use getID3()'s iconv_fallback() conversions (possibly PHP is compiled without XML support)
752 $stringlength = strlen($string);
753 while ($offset < $stringlength) {
754 if ((ord($string{$offset}) |
0x07) == 0xF7) {
755 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
756 $charval = ((ord($string{($offset +
0)}) & 0x07) << 18) &
757 ((ord($string{($offset +
1)}) & 0x3F) << 12) &
758 ((ord($string{($offset +
2)}) & 0x3F) << 6) &
759 (ord($string{($offset +
3)}) & 0x3F);
761 } elseif ((ord($string{$offset}) |
0x0F) == 0xEF) {
762 // 1110bbbb 10bbbbbb 10bbbbbb
763 $charval = ((ord($string{($offset +
0)}) & 0x0F) << 12) &
764 ((ord($string{($offset +
1)}) & 0x3F) << 6) &
765 (ord($string{($offset +
2)}) & 0x3F);
767 } elseif ((ord($string{$offset}) |
0x1F) == 0xDF) {
769 $charval = ((ord($string{($offset +
0)}) & 0x1F) << 6) &
770 (ord($string{($offset +
1)}) & 0x3F);
772 } elseif ((ord($string{$offset}) |
0x7F) == 0x7F) {
774 $charval = ord($string{$offset});
777 // error? throw some kind of warning here?
781 if ($charval !== false) {
782 $newcharstring .= (($charval < 256) ?
chr($charval) : '?');
785 return $newcharstring;
789 public static function iconv_fallback_utf8_utf16be($string, $bom=false) {
792 $newcharstring .= "\xFE\xFF";
795 $stringlength = strlen($string);
796 while ($offset < $stringlength) {
797 if ((ord($string{$offset}) |
0x07) == 0xF7) {
798 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
799 $charval = ((ord($string{($offset +
0)}) & 0x07) << 18) &
800 ((ord($string{($offset +
1)}) & 0x3F) << 12) &
801 ((ord($string{($offset +
2)}) & 0x3F) << 6) &
802 (ord($string{($offset +
3)}) & 0x3F);
804 } elseif ((ord($string{$offset}) |
0x0F) == 0xEF) {
805 // 1110bbbb 10bbbbbb 10bbbbbb
806 $charval = ((ord($string{($offset +
0)}) & 0x0F) << 12) &
807 ((ord($string{($offset +
1)}) & 0x3F) << 6) &
808 (ord($string{($offset +
2)}) & 0x3F);
810 } elseif ((ord($string{$offset}) |
0x1F) == 0xDF) {
812 $charval = ((ord($string{($offset +
0)}) & 0x1F) << 6) &
813 (ord($string{($offset +
1)}) & 0x3F);
815 } elseif ((ord($string{$offset}) |
0x7F) == 0x7F) {
817 $charval = ord($string{$offset});
820 // error? throw some kind of warning here?
824 if ($charval !== false) {
825 $newcharstring .= (($charval < 65536) ? self
::BigEndian2String($charval, 2) : "\x00".'?');
828 return $newcharstring;
832 public static function iconv_fallback_utf8_utf16le($string, $bom=false) {
835 $newcharstring .= "\xFF\xFE";
838 $stringlength = strlen($string);
839 while ($offset < $stringlength) {
840 if ((ord($string{$offset}) |
0x07) == 0xF7) {
841 // 11110bbb 10bbbbbb 10bbbbbb 10bbbbbb
842 $charval = ((ord($string{($offset +
0)}) & 0x07) << 18) &
843 ((ord($string{($offset +
1)}) & 0x3F) << 12) &
844 ((ord($string{($offset +
2)}) & 0x3F) << 6) &
845 (ord($string{($offset +
3)}) & 0x3F);
847 } elseif ((ord($string{$offset}) |
0x0F) == 0xEF) {
848 // 1110bbbb 10bbbbbb 10bbbbbb
849 $charval = ((ord($string{($offset +
0)}) & 0x0F) << 12) &
850 ((ord($string{($offset +
1)}) & 0x3F) << 6) &
851 (ord($string{($offset +
2)}) & 0x3F);
853 } elseif ((ord($string{$offset}) |
0x1F) == 0xDF) {
855 $charval = ((ord($string{($offset +
0)}) & 0x1F) << 6) &
856 (ord($string{($offset +
1)}) & 0x3F);
858 } elseif ((ord($string{$offset}) |
0x7F) == 0x7F) {
860 $charval = ord($string{$offset});
863 // error? maybe throw some warning here?
867 if ($charval !== false) {
868 $newcharstring .= (($charval < 65536) ? self
::LittleEndian2String($charval, 2) : '?'."\x00");
871 return $newcharstring;
874 // UTF-8 => UTF-16LE (BOM)
875 public static function iconv_fallback_utf8_utf16($string) {
876 return self
::iconv_fallback_utf8_utf16le($string, true);
880 public static function iconv_fallback_utf16be_utf8($string) {
881 if (substr($string, 0, 2) == "\xFE\xFF") {
883 $string = substr($string, 2);
886 for ($i = 0; $i < strlen($string); $i +
= 2) {
887 $charval = self
::BigEndian2Int(substr($string, $i, 2));
888 $newcharstring .= self
::iconv_fallback_int_utf8($charval);
890 return $newcharstring;
894 public static function iconv_fallback_utf16le_utf8($string) {
895 if (substr($string, 0, 2) == "\xFF\xFE") {
897 $string = substr($string, 2);
900 for ($i = 0; $i < strlen($string); $i +
= 2) {
901 $charval = self
::LittleEndian2Int(substr($string, $i, 2));
902 $newcharstring .= self
::iconv_fallback_int_utf8($charval);
904 return $newcharstring;
907 // UTF-16BE => ISO-8859-1
908 public static function iconv_fallback_utf16be_iso88591($string) {
909 if (substr($string, 0, 2) == "\xFE\xFF") {
911 $string = substr($string, 2);
914 for ($i = 0; $i < strlen($string); $i +
= 2) {
915 $charval = self
::BigEndian2Int(substr($string, $i, 2));
916 $newcharstring .= (($charval < 256) ?
chr($charval) : '?');
918 return $newcharstring;
921 // UTF-16LE => ISO-8859-1
922 public static function iconv_fallback_utf16le_iso88591($string) {
923 if (substr($string, 0, 2) == "\xFF\xFE") {
925 $string = substr($string, 2);
928 for ($i = 0; $i < strlen($string); $i +
= 2) {
929 $charval = self
::LittleEndian2Int(substr($string, $i, 2));
930 $newcharstring .= (($charval < 256) ?
chr($charval) : '?');
932 return $newcharstring;
935 // UTF-16 (BOM) => ISO-8859-1
936 public static function iconv_fallback_utf16_iso88591($string) {
937 $bom = substr($string, 0, 2);
938 if ($bom == "\xFE\xFF") {
939 return self
::iconv_fallback_utf16be_iso88591(substr($string, 2));
940 } elseif ($bom == "\xFF\xFE") {
941 return self
::iconv_fallback_utf16le_iso88591(substr($string, 2));
946 // UTF-16 (BOM) => UTF-8
947 public static function iconv_fallback_utf16_utf8($string) {
948 $bom = substr($string, 0, 2);
949 if ($bom == "\xFE\xFF") {
950 return self
::iconv_fallback_utf16be_utf8(substr($string, 2));
951 } elseif ($bom == "\xFF\xFE") {
952 return self
::iconv_fallback_utf16le_utf8(substr($string, 2));
957 public static function iconv_fallback($in_charset, $out_charset, $string) {
959 if ($in_charset == $out_charset) {
963 // mb_convert_encoding() availble
964 if (function_exists('mb_convert_encoding')) {
965 if ($converted_string = @mb_convert_encoding
($string, $out_charset, $in_charset)) {
966 switch ($out_charset) {
968 $converted_string = rtrim($converted_string, "\x00");
971 return $converted_string;
976 else if (function_exists('iconv')) {
977 if ($converted_string = @iconv
($in_charset, $out_charset.'//TRANSLIT', $string)) {
978 switch ($out_charset) {
980 $converted_string = rtrim($converted_string, "\x00");
983 return $converted_string;
986 // iconv() may sometimes fail with "illegal character in input string" error message
987 // and return an empty string, but returning the unconverted string is more useful
992 // neither mb_convert_encoding or iconv() is available
993 static $ConversionFunctionList = array();
994 if (empty($ConversionFunctionList)) {
995 $ConversionFunctionList['ISO-8859-1']['UTF-8'] = 'iconv_fallback_iso88591_utf8';
996 $ConversionFunctionList['ISO-8859-1']['UTF-16'] = 'iconv_fallback_iso88591_utf16';
997 $ConversionFunctionList['ISO-8859-1']['UTF-16BE'] = 'iconv_fallback_iso88591_utf16be';
998 $ConversionFunctionList['ISO-8859-1']['UTF-16LE'] = 'iconv_fallback_iso88591_utf16le';
999 $ConversionFunctionList['UTF-8']['ISO-8859-1'] = 'iconv_fallback_utf8_iso88591';
1000 $ConversionFunctionList['UTF-8']['UTF-16'] = 'iconv_fallback_utf8_utf16';
1001 $ConversionFunctionList['UTF-8']['UTF-16BE'] = 'iconv_fallback_utf8_utf16be';
1002 $ConversionFunctionList['UTF-8']['UTF-16LE'] = 'iconv_fallback_utf8_utf16le';
1003 $ConversionFunctionList['UTF-16']['ISO-8859-1'] = 'iconv_fallback_utf16_iso88591';
1004 $ConversionFunctionList['UTF-16']['UTF-8'] = 'iconv_fallback_utf16_utf8';
1005 $ConversionFunctionList['UTF-16LE']['ISO-8859-1'] = 'iconv_fallback_utf16le_iso88591';
1006 $ConversionFunctionList['UTF-16LE']['UTF-8'] = 'iconv_fallback_utf16le_utf8';
1007 $ConversionFunctionList['UTF-16BE']['ISO-8859-1'] = 'iconv_fallback_utf16be_iso88591';
1008 $ConversionFunctionList['UTF-16BE']['UTF-8'] = 'iconv_fallback_utf16be_utf8';
1010 if (isset($ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)])) {
1011 $ConversionFunction = $ConversionFunctionList[strtoupper($in_charset)][strtoupper($out_charset)];
1012 return self
::$ConversionFunction($string);
1014 throw new Exception('PHP does not has mb_convert_encoding() or iconv() support - cannot convert from '.$in_charset.' to '.$out_charset);
1017 public static function recursiveMultiByteCharString2HTML($data, $charset='ISO-8859-1') {
1018 if (is_string($data)) {
1019 return self
::MultiByteCharString2HTML($data, $charset);
1020 } elseif (is_array($data)) {
1021 $return_data = array();
1022 foreach ($data as $key => $value) {
1023 $return_data[$key] = self
::recursiveMultiByteCharString2HTML($value, $charset);
1025 return $return_data;
1027 // integer, float, objects, resources, etc
1031 public static function MultiByteCharString2HTML($string, $charset='ISO-8859-1') {
1032 $string = (string) $string; // in case trying to pass a numeric (float, int) string, would otherwise return an empty string
1035 switch (strtolower($charset)) {
1061 case 'windows-1251':
1062 case 'windows-1252':
1063 $HTMLstring = htmlentities($string, ENT_COMPAT
, $charset);
1067 $strlen = strlen($string);
1068 for ($i = 0; $i < $strlen; $i++
) {
1069 $char_ord_val = ord($string{$i});
1071 if ($char_ord_val < 0x80) {
1072 $charval = $char_ord_val;
1073 } elseif ((($char_ord_val & 0xF0) >> 4) == 0x0F && $i+
3 < $strlen) {
1074 $charval = (($char_ord_val & 0x07) << 18);
1075 $charval +
= ((ord($string{++
$i}) & 0x3F) << 12);
1076 $charval +
= ((ord($string{++
$i}) & 0x3F) << 6);
1077 $charval +
= (ord($string{++
$i}) & 0x3F);
1078 } elseif ((($char_ord_val & 0xE0) >> 5) == 0x07 && $i+
2 < $strlen) {
1079 $charval = (($char_ord_val & 0x0F) << 12);
1080 $charval +
= ((ord($string{++
$i}) & 0x3F) << 6);
1081 $charval +
= (ord($string{++
$i}) & 0x3F);
1082 } elseif ((($char_ord_val & 0xC0) >> 6) == 0x03 && $i+
1 < $strlen) {
1083 $charval = (($char_ord_val & 0x1F) << 6);
1084 $charval +
= (ord($string{++
$i}) & 0x3F);
1086 if (($charval >= 32) && ($charval <= 127)) {
1087 $HTMLstring .= htmlentities(chr($charval));
1089 $HTMLstring .= '&#'.$charval.';';
1095 for ($i = 0; $i < strlen($string); $i +
= 2) {
1096 $charval = self
::LittleEndian2Int(substr($string, $i, 2));
1097 if (($charval >= 32) && ($charval <= 127)) {
1098 $HTMLstring .= chr($charval);
1100 $HTMLstring .= '&#'.$charval.';';
1106 for ($i = 0; $i < strlen($string); $i +
= 2) {
1107 $charval = self
::BigEndian2Int(substr($string, $i, 2));
1108 if (($charval >= 32) && ($charval <= 127)) {
1109 $HTMLstring .= chr($charval);
1111 $HTMLstring .= '&#'.$charval.';';
1117 $HTMLstring = 'ERROR: Character set "'.$charset.'" not supported in MultiByteCharString2HTML()';
1125 public static function RGADnameLookup($namecode) {
1126 static $RGADname = array();
1127 if (empty($RGADname)) {
1128 $RGADname[0] = 'not set';
1129 $RGADname[1] = 'Track Gain Adjustment';
1130 $RGADname[2] = 'Album Gain Adjustment';
1133 return (isset($RGADname[$namecode]) ?
$RGADname[$namecode] : '');
1137 public static function RGADoriginatorLookup($originatorcode) {
1138 static $RGADoriginator = array();
1139 if (empty($RGADoriginator)) {
1140 $RGADoriginator[0] = 'unspecified';
1141 $RGADoriginator[1] = 'pre-set by artist/producer/mastering engineer';
1142 $RGADoriginator[2] = 'set by user';
1143 $RGADoriginator[3] = 'determined automatically';
1146 return (isset($RGADoriginator[$originatorcode]) ?
$RGADoriginator[$originatorcode] : '');
1150 public static function RGADadjustmentLookup($rawadjustment, $signbit) {
1151 $adjustment = $rawadjustment / 10;
1152 if ($signbit == 1) {
1155 return (float) $adjustment;
1159 public static function RGADgainString($namecode, $originatorcode, $replaygain) {
1160 if ($replaygain < 0) {
1165 $storedreplaygain = intval(round($replaygain * 10));
1166 $gainstring = str_pad(decbin($namecode), 3, '0', STR_PAD_LEFT
);
1167 $gainstring .= str_pad(decbin($originatorcode), 3, '0', STR_PAD_LEFT
);
1168 $gainstring .= $signbit;
1169 $gainstring .= str_pad(decbin($storedreplaygain), 9, '0', STR_PAD_LEFT
);
1174 public static function RGADamplitude2dB($amplitude) {
1175 return 20 * log10($amplitude);
1179 public static function GetDataImageSize($imgData, &$imageinfo=array()) {
1180 static $tempdir = '';
1181 if (empty($tempdir)) {
1182 if (function_exists('sys_get_temp_dir')) {
1183 $tempdir = sys_get_temp_dir(); // https://github.com/JamesHeinrich/getID3/issues/52
1186 // yes this is ugly, feel free to suggest a better way
1187 if (include_once(dirname(__FILE__
).'/getid3.php')) {
1188 if ($getid3_temp = new getID3()) {
1189 if ($getid3_temp_tempdir = $getid3_temp->tempdir
) {
1190 $tempdir = $getid3_temp_tempdir;
1192 unset($getid3_temp, $getid3_temp_tempdir);
1196 $GetDataImageSize = false;
1197 if ($tempfilename = tempnam($tempdir, 'gI3')) {
1198 if (is_writable($tempfilename) && is_file($tempfilename) && ($tmp = fopen($tempfilename, 'wb'))) {
1199 fwrite($tmp, $imgData);
1201 $GetDataImageSize = @getimagesize
($tempfilename, $imageinfo);
1202 if (($GetDataImageSize === false) ||
!isset($GetDataImageSize[0]) ||
!isset($GetDataImageSize[1])) {
1205 $GetDataImageSize['height'] = $GetDataImageSize[0];
1206 $GetDataImageSize['width'] = $GetDataImageSize[1];
1208 unlink($tempfilename);
1210 return $GetDataImageSize;
1213 public static function ImageExtFromMime($mime_type) {
1214 // temporary way, works OK for now, but should be reworked in the future
1215 return str_replace(array('image/', 'x-', 'jpeg'), array('', '', 'jpg'), $mime_type);
1218 public static function ImageTypesLookup($imagetypeid) {
1219 static $ImageTypesLookup = array();
1220 if (empty($ImageTypesLookup)) {
1221 $ImageTypesLookup[1] = 'gif';
1222 $ImageTypesLookup[2] = 'jpeg';
1223 $ImageTypesLookup[3] = 'png';
1224 $ImageTypesLookup[4] = 'swf';
1225 $ImageTypesLookup[5] = 'psd';
1226 $ImageTypesLookup[6] = 'bmp';
1227 $ImageTypesLookup[7] = 'tiff (little-endian)';
1228 $ImageTypesLookup[8] = 'tiff (big-endian)';
1229 $ImageTypesLookup[9] = 'jpc';
1230 $ImageTypesLookup[10] = 'jp2';
1231 $ImageTypesLookup[11] = 'jpx';
1232 $ImageTypesLookup[12] = 'jb2';
1233 $ImageTypesLookup[13] = 'swc';
1234 $ImageTypesLookup[14] = 'iff';
1236 return (isset($ImageTypesLookup[$imagetypeid]) ?
$ImageTypesLookup[$imagetypeid] : '');
1239 public static function CopyTagsToComments(&$ThisFileInfo) {
1241 // Copy all entries from ['tags'] into common ['comments']
1242 if (!empty($ThisFileInfo['tags'])) {
1243 foreach ($ThisFileInfo['tags'] as $tagtype => $tagarray) {
1244 foreach ($tagarray as $tagname => $tagdata) {
1245 foreach ($tagdata as $key => $value) {
1246 if (!empty($value)) {
1247 if (empty($ThisFileInfo['comments'][$tagname])) {
1249 // fall through and append value
1251 } elseif ($tagtype == 'id3v1') {
1253 $newvaluelength = strlen(trim($value));
1254 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1255 $oldvaluelength = strlen(trim($existingvalue));
1256 if (($newvaluelength <= $oldvaluelength) && (substr($existingvalue, 0, $newvaluelength) == trim($value))) {
1257 // new value is identical but shorter-than (or equal-length to) one already in comments - skip
1262 } elseif (!is_array($value)) {
1264 $newvaluelength = strlen(trim($value));
1265 foreach ($ThisFileInfo['comments'][$tagname] as $existingkey => $existingvalue) {
1266 $oldvaluelength = strlen(trim($existingvalue));
1267 if ((strlen($existingvalue) > 10) && ($newvaluelength > $oldvaluelength) && (substr(trim($value), 0, strlen($existingvalue)) == $existingvalue)) {
1268 $ThisFileInfo['comments'][$tagname][$existingkey] = trim($value);
1275 if (is_array($value) ||
empty($ThisFileInfo['comments'][$tagname]) ||
!in_array(trim($value), $ThisFileInfo['comments'][$tagname])) {
1276 $value = (is_string($value) ?
trim($value) : $value);
1277 if (!is_int($key) && !ctype_digit($key)) {
1278 $ThisFileInfo['comments'][$tagname][$key] = $value;
1280 if (isset($ThisFileInfo['comments'][$tagname])) {
1281 $ThisFileInfo['comments'][$tagname] = array($value);
1283 $ThisFileInfo['comments'][$tagname][] = $value;
1292 // attempt to standardize spelling of returned keys
1293 $StandardizeFieldNames = array(
1294 'tracknumber' => 'track_number',
1295 'track' => 'track_number',
1297 foreach ($StandardizeFieldNames as $badkey => $goodkey) {
1298 if (array_key_exists($badkey, $ThisFileInfo['comments']) && !array_key_exists($goodkey, $ThisFileInfo['comments'])) {
1299 $ThisFileInfo['comments'][$goodkey] = $ThisFileInfo['comments'][$badkey];
1300 unset($ThisFileInfo['comments'][$badkey]);
1304 // Copy to ['comments_html']
1305 if (!empty($ThisFileInfo['comments'])) {
1306 foreach ($ThisFileInfo['comments'] as $field => $values) {
1307 if ($field == 'picture') {
1308 // pictures can take up a lot of space, and we don't need multiple copies of them
1309 // let there be a single copy in [comments][picture], and not elsewhere
1312 foreach ($values as $index => $value) {
1313 if (is_array($value)) {
1314 $ThisFileInfo['comments_html'][$field][$index] = $value;
1316 $ThisFileInfo['comments_html'][$field][$index] = str_replace('�', '', self
::MultiByteCharString2HTML($value, $ThisFileInfo['encoding']));
1327 public static function EmbeddedLookup($key, $begin, $end, $file, $name) {
1331 if (isset($cache[$file][$name])) {
1332 return (isset($cache[$file][$name][$key]) ?
$cache[$file][$name][$key] : '');
1336 $keylength = strlen($key);
1337 $line_count = $end - $begin - 7;
1340 $fp = fopen($file, 'r');
1342 // Discard $begin lines
1343 for ($i = 0; $i < ($begin +
3); $i++
) {
1348 while (0 < $line_count--) {
1351 $line = ltrim(fgets($fp, 1024), "\t ");
1353 // METHOD A: only cache the matching key - less memory but slower on next lookup of not-previously-looked-up key
1354 //$keycheck = substr($line, 0, $keylength);
1355 //if ($key == $keycheck) {
1356 // $cache[$file][$name][$keycheck] = substr($line, $keylength + 1);
1360 // METHOD B: cache all keys in this lookup - more memory but faster on next lookup of not-previously-looked-up key
1361 //$cache[$file][$name][substr($line, 0, $keylength)] = trim(substr($line, $keylength + 1));
1362 $explodedLine = explode("\t", $line, 2);
1363 $ThisKey = (isset($explodedLine[0]) ?
$explodedLine[0] : '');
1364 $ThisValue = (isset($explodedLine[1]) ?
$explodedLine[1] : '');
1365 $cache[$file][$name][$ThisKey] = trim($ThisValue);
1370 return (isset($cache[$file][$name][$key]) ?
$cache[$file][$name][$key] : '');
1373 public static function IncludeDependency($filename, $sourcefile, $DieOnFailure=false) {
1374 global $GETID3_ERRORARRAY;
1376 if (file_exists($filename)) {
1377 if (include_once($filename)) {
1380 $diemessage = basename($sourcefile).' depends on '.$filename.', which has errors';
1383 $diemessage = basename($sourcefile).' depends on '.$filename.', which is missing';
1385 if ($DieOnFailure) {
1386 throw new Exception($diemessage);
1388 $GETID3_ERRORARRAY[] = $diemessage;
1393 public static function trimNullByte($string) {
1394 return trim($string, "\x00");
1397 public static function getFileSizeSyscall($path) {
1400 if (GETID3_OS_ISWINDOWS
) {
1401 if (class_exists('COM')) { // From PHP 5.3.15 and 5.4.5, COM and DOTNET is no longer built into the php core.you have to add COM support in php.ini:
1402 $filesystem = new COM('Scripting.FileSystemObject');
1403 $file = $filesystem->GetFile($path);
1404 $filesize = $file->Size();
1405 unset($filesystem, $file);
1407 $commandline = 'for %I in ('.escapeshellarg($path).') do @echo %~zI';
1410 $commandline = 'ls -l '.escapeshellarg($path).' | awk \'{print $5}\'';
1412 if (isset($commandline)) {
1413 $output = trim(`
$commandline`
);
1414 if (ctype_digit($output)) {
1415 $filesize = (float) $output;
1423 * Workaround for Bug #37268 (https://bugs.php.net/bug.php?id=37268)
1424 * @param string $path A path.
1425 * @param string $suffix If the name component ends in suffix this will also be cut off.
1428 public static function mb_basename($path, $suffix = null) {
1429 $splited = preg_split('#/#', rtrim($path, '/ '));
1430 return substr(basename('X'.$splited[count($splited) - 1], $suffix), 1);