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Edit File : getid3.php \| Size : 65.01 KB
<?php ///////////////////////////////////////////////////////////////// /// getID3() by James Heinrich <info@getid3.org> // // available at http://getid3.sourceforge.net // // or http://www.getid3.org // // also https://github.com/JamesHeinrich/getID3 // ///////////////////////////////////////////////////////////////// // // // Please see readme.txt for more information // // /// ///////////////////////////////////////////////////////////////// // define a constant rather than looking up every time it is needed if (!defined('GETID3_OS_ISWINDOWS')) { define('GETID3_OS_ISWINDOWS', (stripos(PHP_OS, 'WIN') === 0)); } // Get base path of getID3() - ONCE if (!defined('GETID3_INCLUDEPATH')) { define('GETID3_INCLUDEPATH', dirname(__FILE__).DIRECTORY_SEPARATOR); } // Workaround Bug #39923 (https://bugs.php.net/bug.php?id=39923) if (!defined('IMG_JPG') && defined('IMAGETYPE_JPEG')) { define('IMG_JPG', IMAGETYPE_JPEG); } if (!defined('ENT_SUBSTITUTE')) { // PHP5.3 adds ENT_IGNORE, PHP5.4 adds ENT_SUBSTITUTE define('ENT_SUBSTITUTE', (defined('ENT_IGNORE') ? ENT_IGNORE : 8)); } // attempt to define temp dir as something flexible but reliable $temp_dir = ini_get('upload_tmp_dir'); if ($temp_dir && (!is_dir($temp_dir) \|\| !is_readable($temp_dir))) { $temp_dir = ''; } if (!$temp_dir && function_exists('sys_get_temp_dir')) { // sys_get_temp_dir added in PHP v5.2.1 // sys_get_temp_dir() may give inaccessible temp dir, e.g. with open_basedir on virtual hosts $temp_dir = sys_get_temp_dir(); } $temp_dir = @realpath($temp_dir); // see https://github.com/JamesHeinrich/getID3/pull/10 $open_basedir = ini_get('open_basedir'); if ($open_basedir) { // e.g. "/var/www/vhosts/getid3.org/httpdocs/:/tmp/" $temp_dir = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $temp_dir); $open_basedir = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $open_basedir); if (substr($temp_dir, -1, 1) != DIRECTORY_SEPARATOR) { $temp_dir .= DIRECTORY_SEPARATOR; } $found_valid_tempdir = false; $open_basedirs = explode(PATH_SEPARATOR, $open_basedir); foreach ($open_basedirs as $basedir) { if (substr($basedir, -1, 1) != DIRECTORY_SEPARATOR) { $basedir .= DIRECTORY_SEPARATOR; } if (preg_match('#^'.preg_quote($basedir).'#', $temp_dir)) { $found_valid_tempdir = true; break; } } if (!$found_valid_tempdir) { $temp_dir = ''; } unset($open_basedirs, $found_valid_tempdir, $basedir); } if (!$temp_dir) { $temp_dir = ''; // invalid directory name should force tempnam() to use system default temp dir } // $temp_dir = '/something/else/'; // feel free to override temp dir here if it works better for your system if (!defined('GETID3_TEMP_DIR')) { define('GETID3_TEMP_DIR', $temp_dir); } unset($open_basedir, $temp_dir); // End: Defines class getID3 { // public: Settings public $encoding = 'UTF-8'; // CASE SENSITIVE! - i.e. (must be supported by iconv()). Examples: ISO-8859-1 UTF-8 UTF-16 UTF-16BE public $encoding_id3v1 = 'ISO-8859-1'; // Should always be 'ISO-8859-1', but some tags may be written in other encodings such as 'EUC-CN' or 'CP1252' // public: Optional tag checks - disable for speed. public $option_tag_id3v1 = true; // Read and process ID3v1 tags public $option_tag_id3v2 = true; // Read and process ID3v2 tags public $option_tag_lyrics3 = true; // Read and process Lyrics3 tags public $option_tag_apetag = true; // Read and process APE tags public $option_tags_process = true; // Copy tags to root key 'tags' and encode to $this->encoding public $option_tags_html = true; // Copy tags to root key 'tags_html' properly translated from various encodings to HTML entities // public: Optional tag/comment calucations public $option_extra_info = true; // Calculate additional info such as bitrate, channelmode etc // public: Optional handling of embedded attachments (e.g. images) public $option_save_attachments = true; // defaults to true (ATTACHMENTS_INLINE) for backward compatibility // public: Optional calculations public $option_md5_data = false; // Get MD5 sum of data part - slow public $option_md5_data_source = false; // Use MD5 of source file if availble - only FLAC and OptimFROG public $option_sha1_data = false; // Get SHA1 sum of data part - slow public $option_max_2gb_check = null; // Check whether file is larger than 2GB and thus not supported by 32-bit PHP (null: auto-detect based on PHP_INT_MAX) // public: Read buffer size in bytes public $option_fread_buffer_size = 32768; // Public variables public $filename; // Filename of file being analysed. public $fp; // Filepointer to file being analysed. public $info; // Result array. public $tempdir = GETID3_TEMP_DIR; public $memory_limit = 0; // Protected variables protected $startup_error = ''; protected $startup_warning = ''; const VERSION = '1.9.14-201706111222'; const FREAD_BUFFER_SIZE = 32768; const ATTACHMENTS_NONE = false; const ATTACHMENTS_INLINE = true; // public: constructor public function __construct() { // Check memory $this->memory_limit = ini_get('memory_limit'); if (preg_match('#([0-9]+) ?M#i', $this->memory_limit, $matches)) { // could be stored as "16M" rather than 16777216 for example $this->memory_limit = $matches[1] 1048576; } elseif (preg_match('#([0-9]+) ?G#i', $this->memory_limit, $matches)) { // The 'G' modifier is available since PHP 5.1.0 // could be stored as "2G" rather than 2147483648 for example $this->memory_limit = $matches[1] * 1073741824; } if ($this->memory_limit <= 0) { // memory limits probably disabled } elseif ($this->memory_limit <= 4194304) { $this->startup_error .= 'PHP has less than 4MB available memory and will very likely run out. Increase memory_limit in php.ini'."\n"; } elseif ($this->memory_limit <= 12582912) { $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'."\n"; } // Check safe_mode off if (preg_match('#(1\|ON)#i', ini_get('safe_mode'))) { $this->warning('WARNING: Safe mode is on, shorten support disabled, md5data/sha1data for ogg vorbis disabled, ogg vorbos/flac tag writing disabled.'); } if (($mbstring_func_overload = ini_get('mbstring.func_overload')) && ($mbstring_func_overload & 0x02)) { // http://php.net/manual/en/mbstring.overload.php // "mbstring.func_overload in php.ini is a positive value that represents a combination of bitmasks specifying the categories of functions to be overloaded. It should be set to 1 to overload the mail() function. 2 for string functions, 4 for regular expression functions" // getID3 cannot run when string functions are overloaded. It doesn't matter if mail() or ereg* functions are overloaded since getID3 does not use those. $this->startup_error .= 'WARNING: php.ini contains "mbstring.func_overload = '.ini_get('mbstring.func_overload').'", getID3 cannot run with this setting (bitmask 2 (string functions) cannot be set). Recommended to disable entirely.'."\n"; } // Check for magic_quotes_runtime if (function_exists('get_magic_quotes_runtime')) { if (get_magic_quotes_runtime()) { $this->startup_error .= 'magic_quotes_runtime must be disabled before running getID3(). Surround getid3 block by set_magic_quotes_runtime(0) and set_magic_quotes_runtime(1).'."\n"; } } // Check for magic_quotes_gpc if (function_exists('magic_quotes_gpc')) { if (get_magic_quotes_gpc()) { $this->startup_error .= 'magic_quotes_gpc must be disabled before running getID3(). Surround getid3 block by set_magic_quotes_gpc(0) and set_magic_quotes_gpc(1).'."\n"; } } // Load support library if (!include_once(GETID3_INCLUDEPATH.'getid3.lib.php')) { $this->startup_error .= 'getid3.lib.php is missing or corrupt'."\n"; } if ($this->option_max_2gb_check === null) { $this->option_max_2gb_check = (PHP_INT_MAX <= 2147483647); } // Needed for Windows only: // Define locations of helper applications for Shorten, VorbisComment, MetaFLAC // as well as other helper functions such as head, tail, md5sum, etc // This path cannot contain spaces, but the below code will attempt to get the // 8.3-equivalent path automatically // IMPORTANT: This path must include the trailing slash if (GETID3_OS_ISWINDOWS && !defined('GETID3_HELPERAPPSDIR')) { $helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path if (!is_dir($helperappsdir)) { $this->startup_warning .= '"'.$helperappsdir.'" cannot be defined as GETID3_HELPERAPPSDIR because it does not exist'."\n"; } elseif (strpos(realpath($helperappsdir), ' ') !== false) { $DirPieces = explode(DIRECTORY_SEPARATOR, realpath($helperappsdir)); $path_so_far = array(); foreach ($DirPieces as $key => $value) { if (strpos($value, ' ') !== false) { if (!empty($path_so_far)) { $commandline = 'dir /x '.escapeshellarg(implode(DIRECTORY_SEPARATOR, $path_so_far)); $dir_listing = `$commandline`; $lines = explode("\n", $dir_listing); foreach ($lines as $line) { $line = trim($line); if (preg_match('#^([0-9/]{10}) +([0-9:]{4,5}( [AP]M)?) +(<DIR>\|[0-9,]+) +([^ ]{0,11}) +(.+)$#', $line, $matches)) { list($dummy, $date, $time, $ampm, $filesize, $shortname, $filename) = $matches; if ((strtoupper($filesize) == '<DIR>') && (strtolower($filename) == strtolower($value))) { $value = $shortname; } } } } else { $this->startup_warning .= 'GETID3_HELPERAPPSDIR must not have any spaces in it - use 8dot3 naming convention if neccesary. You can run "dir /x" from the commandline to see the correct 8.3-style names.'."\n"; } } $path_so_far[] = $value; } $helperappsdir = implode(DIRECTORY_SEPARATOR, $path_so_far); } define('GETID3_HELPERAPPSDIR', $helperappsdir.DIRECTORY_SEPARATOR); } if (!empty($this->startup_error)) { echo $this->startup_error; throw new getid3_exception($this->startup_error); } return true; } public function version() { return self::VERSION; } public function fread_buffer_size() { return $this->option_fread_buffer_size; } // public: setOption public function setOption($optArray) { if (!is_array($optArray) \|\| empty($optArray)) { return false; } foreach ($optArray as $opt => $val) { if (isset($this->$opt) === false) { continue; } $this->$opt = $val; } return true; } public function openfile($filename, $filesize=null) { try { if (!empty($this->startup_error)) { throw new getid3_exception($this->startup_error); } if (!empty($this->startup_warning)) { foreach (explode("\n", $this->startup_warning) as $startup_warning) { $this->warning($startup_warning); } } // init result array and set parameters $this->filename = $filename; $this->info = array(); $this->info['GETID3_VERSION'] = $this->version(); $this->info['php_memory_limit'] = (($this->memory_limit > 0) ? $this->memory_limit : false); // remote files not supported if (preg_match('#^(ht\|f)tp://#', $filename)) { throw new getid3_exception('Remote files are not supported - please copy the file locally first'); } $filename = str_replace('/', DIRECTORY_SEPARATOR, $filename); $filename = preg_replace('#(?<!gs:)('.preg_quote(DIRECTORY_SEPARATOR).'{2,})#', DIRECTORY_SEPARATOR, $filename); // open local file //if (is_readable($filename) && is_file($filename) && ($this->fp = fopen($filename, 'rb'))) { // see http://www.getid3.org/phpBB3/viewtopic.php?t=1720 if ((is_readable($filename) \|\| file_exists($filename)) && is_file($filename) && ($this->fp = fopen($filename, 'rb'))) { // great } else { $errormessagelist = array(); if (!is_readable($filename)) { $errormessagelist[] = '!is_readable'; } if (!is_file($filename)) { $errormessagelist[] = '!is_file'; } if (!file_exists($filename)) { $errormessagelist[] = '!file_exists'; } if (empty($errormessagelist)) { $errormessagelist[] = 'fopen failed'; } throw new getid3_exception('Could not open "'.$filename.'" ('.implode('; ', $errormessagelist).')'); } $this->info['filesize'] = (!is_null($filesize) ? $filesize : filesize($filename)); // set redundant parameters - might be needed in some include file // filenames / filepaths in getID3 are always expressed with forward slashes (unix-style) for both Windows and other to try and minimize confusion $filename = str_replace('\\', '/', $filename); $this->info['filepath'] = str_replace('\\', '/', realpath(dirname($filename))); $this->info['filename'] = getid3_lib::mb_basename($filename); $this->info['filenamepath'] = $this->info['filepath'].'/'.$this->info['filename']; // set more parameters $this->info['avdataoffset'] = 0; $this->info['avdataend'] = $this->info['filesize']; $this->info['fileformat'] = ''; // filled in later $this->info['audio']['dataformat'] = ''; // filled in later, unset if not used $this->info['video']['dataformat'] = ''; // filled in later, unset if not used $this->info['tags'] = array(); // filled in later, unset if not used $this->info['error'] = array(); // filled in later, unset if not used $this->info['warning'] = array(); // filled in later, unset if not used $this->info['comments'] = array(); // filled in later, unset if not used $this->info['encoding'] = $this->encoding; // required by id3v2 and iso modules - can be unset at the end if desired // option_max_2gb_check if ($this->option_max_2gb_check) { // PHP (32-bit all, and 64-bit Windows) doesn't support integers larger than 2^31 (~2GB) // filesize() simply returns (filesize % (pow(2, 32)), no matter the actual filesize // ftell() returns 0 if seeking to the end is beyond the range of unsigned integer $fseek = fseek($this->fp, 0, SEEK_END); if (($fseek < 0) \|\| (($this->info['filesize'] != 0) && (ftell($this->fp) == 0)) \|\| ($this->info['filesize'] < 0) \|\| (ftell($this->fp) < 0)) { $real_filesize = getid3_lib::getFileSizeSyscall($this->info['filenamepath']); if ($real_filesize === false) { unset($this->info['filesize']); fclose($this->fp); throw new getid3_exception('Unable to determine actual filesize. File is most likely larger than '.round(PHP_INT_MAX / 1073741824).'GB and is not supported by PHP.'); } elseif (getid3_lib::intValueSupported($real_filesize)) { unset($this->info['filesize']); fclose($this->fp); throw new getid3_exception('PHP seems to think the file is larger than '.round(PHP_INT_MAX / 1073741824).'GB, but filesystem reports it as '.number_format($real_filesize, 3).'GB, please report to info@getid3.org'); } $this->info['filesize'] = $real_filesize; $this->warning('File is larger than '.round(PHP_INT_MAX / 1073741824).'GB (filesystem reports it as '.number_format($real_filesize, 3).'GB) and is not properly supported by PHP.'); } } return true; } catch (Exception $e) { $this->error($e->getMessage()); } return false; } // public: analyze file public function analyze($filename, $filesize=null, $original_filename='') { try { if (!$this->openfile($filename, $filesize)) { return $this->info; } // Handle tags foreach (array('id3v2'=>'id3v2', 'id3v1'=>'id3v1', 'apetag'=>'ape', 'lyrics3'=>'lyrics3') as $tag_name => $tag_key) { $option_tag = 'option_tag_'.$tag_name; if ($this->$option_tag) { $this->include_module('tag.'.$tag_name); try { $tag_class = 'getid3_'.$tag_name; $tag = new $tag_class($this); $tag->Analyze(); } catch (getid3_exception $e) { throw $e; } } } if (isset($this->info['id3v2']['tag_offset_start'])) { $this->info['avdataoffset'] = max($this->info['avdataoffset'], $this->info['id3v2']['tag_offset_end']); } foreach (array('id3v1'=>'id3v1', 'apetag'=>'ape', 'lyrics3'=>'lyrics3') as $tag_name => $tag_key) { if (isset($this->info[$tag_key]['tag_offset_start'])) { $this->info['avdataend'] = min($this->info['avdataend'], $this->info[$tag_key]['tag_offset_start']); } } // ID3v2 detection (NOT parsing), even if ($this->option_tag_id3v2 == false) done to make fileformat easier if (!$this->option_tag_id3v2) { fseek($this->fp, 0); $header = fread($this->fp, 10); if ((substr($header, 0, 3) == 'ID3') && (strlen($header) == 10)) { $this->info['id3v2']['header'] = true; $this->info['id3v2']['majorversion'] = ord($header[3]); $this->info['id3v2']['minorversion'] = ord($header[4]); $this->info['avdataoffset'] += getid3_lib::BigEndian2Int(substr($header, 6, 4), 1) + 10; // length of ID3v2 tag in 10-byte header doesn't include 10-byte header length } } // read 32 kb file data fseek($this->fp, $this->info['avdataoffset']); $formattest = fread($this->fp, 32774); // determine format $determined_format = $this->GetFileFormat($formattest, ($original_filename ? $original_filename : $filename)); // unable to determine file format if (!$determined_format) { fclose($this->fp); return $this->error('unable to determine file format'); } // check for illegal ID3 tags if (isset($determined_format['fail_id3']) && (in_array('id3v1', $this->info['tags']) \|\| in_array('id3v2', $this->info['tags']))) { if ($determined_format['fail_id3'] === 'ERROR') { fclose($this->fp); return $this->error('ID3 tags not allowed on this file type.'); } elseif ($determined_format['fail_id3'] === 'WARNING') { $this->warning('ID3 tags not allowed on this file type.'); } } // check for illegal APE tags if (isset($determined_format['fail_ape']) && in_array('ape', $this->info['tags'])) { if ($determined_format['fail_ape'] === 'ERROR') { fclose($this->fp); return $this->error('APE tags not allowed on this file type.'); } elseif ($determined_format['fail_ape'] === 'WARNING') { $this->warning('APE tags not allowed on this file type.'); } } // set mime type $this->info['mime_type'] = $determined_format['mime_type']; // supported format signature pattern detected, but module deleted if (!file_exists(GETID3_INCLUDEPATH.$determined_format['include'])) { fclose($this->fp); return $this->error('Format not supported, module "'.$determined_format['include'].'" was removed.'); } // module requires mb_convert_encoding/iconv support // Check encoding/iconv support if (!empty($determined_format['iconv_req']) && !function_exists('mb_convert_encoding') && !function_exists('iconv') && !in_array($this->encoding, array('ISO-8859-1', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'UTF-16'))) { $errormessage = 'mb_convert_encoding() or iconv() support is required for this module ('.$determined_format['include'].') for encodings other than ISO-8859-1, UTF-8, UTF-16LE, UTF16-BE, UTF-16. '; if (GETID3_OS_ISWINDOWS) { $errormessage .= 'PHP does not have mb_convert_encoding() or iconv() support. Please enable php_mbstring.dll / php_iconv.dll in php.ini, and copy php_mbstring.dll / iconv.dll from c:/php/dlls to c:/windows/system32'; } else { $errormessage .= 'PHP is not compiled with mb_convert_encoding() or iconv() support. Please recompile with the --enable-mbstring / --with-iconv switch'; } return $this->error($errormessage); } // include module include_once(GETID3_INCLUDEPATH.$determined_format['include']); // instantiate module class $class_name = 'getid3_'.$determined_format['module']; if (!class_exists($class_name)) { return $this->error('Format not supported, module "'.$determined_format['include'].'" is corrupt.'); } $class = new $class_name($this); $class->Analyze(); unset($class); // close file fclose($this->fp); // process all tags - copy to 'tags' and convert charsets if ($this->option_tags_process) { $this->HandleAllTags(); } // perform more calculations if ($this->option_extra_info) { $this->ChannelsBitratePlaytimeCalculations(); $this->CalculateCompressionRatioVideo(); $this->CalculateCompressionRatioAudio(); $this->CalculateReplayGain(); $this->ProcessAudioStreams(); } // get the MD5 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags if ($this->option_md5_data) { // do not calc md5_data if md5_data_source is present - set by flac only - future MPC/SV8 too if (!$this->option_md5_data_source \|\| empty($this->info['md5_data_source'])) { $this->getHashdata('md5'); } } // get the SHA1 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags if ($this->option_sha1_data) { $this->getHashdata('sha1'); } // remove undesired keys $this->CleanUp(); } catch (Exception $e) { $this->error('Caught exception: '.$e->getMessage()); } // return info array return $this->info; } // private: error handling public function error($message) { $this->CleanUp(); if (!isset($this->info['error'])) { $this->info['error'] = array(); } $this->info['error'][] = $message; return $this->info; } // private: warning handling public function warning($message) { $this->info['warning'][] = $message; return true; } // private: CleanUp private function CleanUp() { // remove possible empty keys $AVpossibleEmptyKeys = array('dataformat', 'bits_per_sample', 'encoder_options', 'streams', 'bitrate'); foreach ($AVpossibleEmptyKeys as $dummy => $key) { if (empty($this->info['audio'][$key]) && isset($this->info['audio'][$key])) { unset($this->info['audio'][$key]); } if (empty($this->info['video'][$key]) && isset($this->info['video'][$key])) { unset($this->info['video'][$key]); } } // remove empty root keys if (!empty($this->info)) { foreach ($this->info as $key => $value) { if (empty($this->info[$key]) && ($this->info[$key] !== 0) && ($this->info[$key] !== '0')) { unset($this->info[$key]); } } } // remove meaningless entries from unknown-format files if (empty($this->info['fileformat'])) { if (isset($this->info['avdataoffset'])) { unset($this->info['avdataoffset']); } if (isset($this->info['avdataend'])) { unset($this->info['avdataend']); } } // remove possible duplicated identical entries if (!empty($this->info['error'])) { $this->info['error'] = array_values(array_unique($this->info['error'])); } if (!empty($this->info['warning'])) { $this->info['warning'] = array_values(array_unique($this->info['warning'])); } // remove "global variable" type keys unset($this->info['php_memory_limit']); return true; } // return array containing information about all supported formats public function GetFileFormatArray() { static $format_info = array(); if (empty($format_info)) { $format_info = array( // Audio formats // AC-3 - audio - Dolby AC-3 / Dolby Digital 'ac3' => array( 'pattern' => '^\\x0B\\x77', 'group' => 'audio', 'module' => 'ac3', 'mime_type' => 'audio/ac3', ), // AAC - audio - Advanced Audio Coding (AAC) - ADIF format 'adif' => array( 'pattern' => '^ADIF', 'group' => 'audio', 'module' => 'aac', 'mime_type' => 'application/octet-stream', 'fail_ape' => 'WARNING', ), /* // AA - audio - Audible Audiobook 'aa' => array( 'pattern' => '^.{4}\\x57\\x90\\x75\\x36', 'group' => 'audio', 'module' => 'aa', 'mime_type' => 'audio/audible', ), / // AAC - audio - Advanced Audio Coding (AAC) - ADTS format (very similar to MP3) 'adts' => array( 'pattern' => '^\\xFF[\\xF0-\\xF1\\xF8-\\xF9]', 'group' => 'audio', 'module' => 'aac', 'mime_type' => 'application/octet-stream', 'fail_ape' => 'WARNING', ), // AU - audio - NeXT/Sun AUdio (AU) 'au' => array( 'pattern' => '^\\.snd', 'group' => 'audio', 'module' => 'au', 'mime_type' => 'audio/basic', ), // AMR - audio - Adaptive Multi Rate 'amr' => array( 'pattern' => '^\\x23\\x21AMR\\x0A', // #!AMR[0A] 'group' => 'audio', 'module' => 'amr', 'mime_type' => 'audio/amr', ), // AVR - audio - Audio Visual Research 'avr' => array( 'pattern' => '^2BIT', 'group' => 'audio', 'module' => 'avr', 'mime_type' => 'application/octet-stream', ), // BONK - audio - Bonk v0.9+ 'bonk' => array( 'pattern' => '^\\x00(BONK\|INFO\|META\| ID3)', 'group' => 'audio', 'module' => 'bonk', 'mime_type' => 'audio/xmms-bonk', ), // DSF - audio - Direct Stream Digital (DSD) Storage Facility files (DSF) - https://en.wikipedia.org/wiki/Direct_Stream_Digital 'dsf' => array( 'pattern' => '^DSD ', // including trailing space: 44 53 44 20 'group' => 'audio', 'module' => 'dsf', 'mime_type' => 'audio/dsd', ), // DSS - audio - Digital Speech Standard 'dss' => array( 'pattern' => '^[\\x02-\\x06]ds[s2]', 'group' => 'audio', 'module' => 'dss', 'mime_type' => 'application/octet-stream', ), // DTS - audio - Dolby Theatre System 'dts' => array( 'pattern' => '^\\x7F\\xFE\\x80\\x01', 'group' => 'audio', 'module' => 'dts', 'mime_type' => 'audio/dts', ), // FLAC - audio - Free Lossless Audio Codec 'flac' => array( 'pattern' => '^fLaC', 'group' => 'audio', 'module' => 'flac', 'mime_type' => 'audio/x-flac', ), // LA - audio - Lossless Audio (LA) 'la' => array( 'pattern' => '^LA0[2-4]', 'group' => 'audio', 'module' => 'la', 'mime_type' => 'application/octet-stream', ), // LPAC - audio - Lossless Predictive Audio Compression (LPAC) 'lpac' => array( 'pattern' => '^LPAC', 'group' => 'audio', 'module' => 'lpac', 'mime_type' => 'application/octet-stream', ), // MIDI - audio - MIDI (Musical Instrument Digital Interface) 'midi' => array( 'pattern' => '^MThd', 'group' => 'audio', 'module' => 'midi', 'mime_type' => 'audio/midi', ), // MAC - audio - Monkey's Audio Compressor 'mac' => array( 'pattern' => '^MAC ', 'group' => 'audio', 'module' => 'monkey', 'mime_type' => 'application/octet-stream', ), // has been known to produce false matches in random files (e.g. JPEGs), leave out until more precise matching available // // MOD - audio - MODule (assorted sub-formats) // 'mod' => array( // 'pattern' => '^.{1080}(M\\.K\\.\|M!K!\|FLT4\|FLT8\|[5-9]CHN\|[1-3][0-9]CH)', // 'group' => 'audio', // 'module' => 'mod', // 'option' => 'mod', // 'mime_type' => 'audio/mod', // ), // MOD - audio - MODule (Impulse Tracker) 'it' => array( 'pattern' => '^IMPM', 'group' => 'audio', 'module' => 'mod', //'option' => 'it', 'mime_type' => 'audio/it', ), // MOD - audio - MODule (eXtended Module, various sub-formats) 'xm' => array( 'pattern' => '^Extended Module', 'group' => 'audio', 'module' => 'mod', //'option' => 'xm', 'mime_type' => 'audio/xm', ), // MOD - audio - MODule (ScreamTracker) 's3m' => array( 'pattern' => '^.{44}SCRM', 'group' => 'audio', 'module' => 'mod', //'option' => 's3m', 'mime_type' => 'audio/s3m', ), // MPC - audio - Musepack / MPEGplus 'mpc' => array( 'pattern' => '^(MPCK\|MP\\+\|[\\x00\\x01\\x10\\x11\\x40\\x41\\x50\\x51\\x80\\x81\\x90\\x91\\xC0\\xC1\\xD0\\xD1][\\x20-\\x37][\\x00\\x20\\x40\\x60\\x80\\xA0\\xC0\\xE0])', 'group' => 'audio', 'module' => 'mpc', 'mime_type' => 'audio/x-musepack', ), // MP3 - audio - MPEG-audio Layer 3 (very similar to AAC-ADTS) 'mp3' => array( 'pattern' => '^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\x0B\\x10-\\x1B\\x20-\\x2B\\x30-\\x3B\\x40-\\x4B\\x50-\\x5B\\x60-\\x6B\\x70-\\x7B\\x80-\\x8B\\x90-\\x9B\\xA0-\\xAB\\xB0-\\xBB\\xC0-\\xCB\\xD0-\\xDB\\xE0-\\xEB\\xF0-\\xFB]', 'group' => 'audio', 'module' => 'mp3', 'mime_type' => 'audio/mpeg', ), // OFR - audio - OptimFROG 'ofr' => array( 'pattern' => '^(\\RIFF\|OFR)', 'group' => 'audio', 'module' => 'optimfrog', 'mime_type' => 'application/octet-stream', ), // RKAU - audio - RKive AUdio compressor 'rkau' => array( 'pattern' => '^RKA', 'group' => 'audio', 'module' => 'rkau', 'mime_type' => 'application/octet-stream', ), // SHN - audio - Shorten 'shn' => array( 'pattern' => '^ajkg', 'group' => 'audio', 'module' => 'shorten', 'mime_type' => 'audio/xmms-shn', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // TTA - audio - TTA Lossless Audio Compressor (http://tta.corecodec.org) 'tta' => array( 'pattern' => '^TTA', // could also be '^TTA(\\x01\|\\x02\|\\x03\|2\|1)' 'group' => 'audio', 'module' => 'tta', 'mime_type' => 'application/octet-stream', ), // VOC - audio - Creative Voice (VOC) 'voc' => array( 'pattern' => '^Creative Voice File', 'group' => 'audio', 'module' => 'voc', 'mime_type' => 'audio/voc', ), // VQF - audio - transform-domain weighted interleave Vector Quantization Format (VQF) 'vqf' => array( 'pattern' => '^TWIN', 'group' => 'audio', 'module' => 'vqf', 'mime_type' => 'application/octet-stream', ), // WV - audio - WavPack (v4.0+) 'wv' => array( 'pattern' => '^wvpk', 'group' => 'audio', 'module' => 'wavpack', 'mime_type' => 'application/octet-stream', ), // Audio-Video formats // ASF - audio/video - Advanced Streaming Format, Windows Media Video, Windows Media Audio 'asf' => array( 'pattern' => '^\\x30\\x26\\xB2\\x75\\x8E\\x66\\xCF\\x11\\xA6\\xD9\\x00\\xAA\\x00\\x62\\xCE\\x6C', 'group' => 'audio-video', 'module' => 'asf', 'mime_type' => 'video/x-ms-asf', 'iconv_req' => false, ), // BINK - audio/video - Bink / Smacker 'bink' => array( 'pattern' => '^(BIK\|SMK)', 'group' => 'audio-video', 'module' => 'bink', 'mime_type' => 'application/octet-stream', ), // FLV - audio/video - FLash Video 'flv' => array( 'pattern' => '^FLV[\\x01]', 'group' => 'audio-video', 'module' => 'flv', 'mime_type' => 'video/x-flv', ), // MKAV - audio/video - Mastroka 'matroska' => array( 'pattern' => '^\\x1A\\x45\\xDF\\xA3', 'group' => 'audio-video', 'module' => 'matroska', 'mime_type' => 'video/x-matroska', // may also be audio/x-matroska ), // MPEG - audio/video - MPEG (Moving Pictures Experts Group) 'mpeg' => array( 'pattern' => '^\\x00\\x00\\x01[\\xB3\\xBA]', 'group' => 'audio-video', 'module' => 'mpeg', 'mime_type' => 'video/mpeg', ), // NSV - audio/video - Nullsoft Streaming Video (NSV) 'nsv' => array( 'pattern' => '^NSV[sf]', 'group' => 'audio-video', 'module' => 'nsv', 'mime_type' => 'application/octet-stream', ), // Ogg - audio/video - Ogg (Ogg-Vorbis, Ogg-FLAC, Speex, Ogg-Theora(), Ogg-Tarkin()) 'ogg' => array( 'pattern' => '^OggS', 'group' => 'audio', 'module' => 'ogg', 'mime_type' => 'application/ogg', 'fail_id3' => 'WARNING', 'fail_ape' => 'WARNING', ), // QT - audio/video - Quicktime 'quicktime' => array( 'pattern' => '^.{4}(cmov\|free\|ftyp\|mdat\|moov\|pnot\|skip\|wide)', 'group' => 'audio-video', 'module' => 'quicktime', 'mime_type' => 'video/quicktime', ), // 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) 'riff' => array( 'pattern' => '^(RIFF\|SDSS\|FORM)', 'group' => 'audio-video', 'module' => 'riff', 'mime_type' => 'audio/x-wav', 'fail_ape' => 'WARNING', ), // Real - audio/video - RealAudio, RealVideo 'real' => array( 'pattern' => '^\\.(RMF\|ra)', 'group' => 'audio-video', 'module' => 'real', 'mime_type' => 'audio/x-realaudio', ), // SWF - audio/video - ShockWave Flash 'swf' => array( 'pattern' => '^(F\|C)WS', 'group' => 'audio-video', 'module' => 'swf', 'mime_type' => 'application/x-shockwave-flash', ), // TS - audio/video - MPEG-2 Transport Stream 'ts' => array( 'pattern' => '^(\\x47.{187}){10,}', // packets are 188 bytes long and start with 0x47 "G". Check for at least 10 packets matching this pattern 'group' => 'audio-video', 'module' => 'ts', 'mime_type' => 'video/MP2T', ), // Still-Image formats // BMP - still image - Bitmap (Windows, OS/2; uncompressed, RLE8, RLE4) 'bmp' => array( 'pattern' => '^BM', 'group' => 'graphic', 'module' => 'bmp', 'mime_type' => 'image/bmp', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // GIF - still image - Graphics Interchange Format 'gif' => array( 'pattern' => '^GIF', 'group' => 'graphic', 'module' => 'gif', 'mime_type' => 'image/gif', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // JPEG - still image - Joint Photographic Experts Group (JPEG) 'jpg' => array( 'pattern' => '^\\xFF\\xD8\\xFF', 'group' => 'graphic', 'module' => 'jpg', 'mime_type' => 'image/jpeg', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // PCD - still image - Kodak Photo CD 'pcd' => array( 'pattern' => '^.{2048}PCD_IPI\\x00', 'group' => 'graphic', 'module' => 'pcd', 'mime_type' => 'image/x-photo-cd', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // PNG - still image - Portable Network Graphics (PNG) 'png' => array( 'pattern' => '^\\x89\\x50\\x4E\\x47\\x0D\\x0A\\x1A\\x0A', 'group' => 'graphic', 'module' => 'png', 'mime_type' => 'image/png', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // SVG - still image - Scalable Vector Graphics (SVG) 'svg' => array( 'pattern' => '(<!DOCTYPE svg PUBLIC \|xmlns="http://www\\.w3\\.org/2000/svg")', 'group' => 'graphic', 'module' => 'svg', 'mime_type' => 'image/svg+xml', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // TIFF - still image - Tagged Information File Format (TIFF) 'tiff' => array( 'pattern' => '^(II\\x2A\\x00\|MM\\x00\\x2A)', 'group' => 'graphic', 'module' => 'tiff', 'mime_type' => 'image/tiff', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // EFAX - still image - eFax (TIFF derivative) 'efax' => array( 'pattern' => '^\\xDC\\xFE', 'group' => 'graphic', 'module' => 'efax', 'mime_type' => 'image/efax', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // Data formats // ISO - data - International Standards Organization (ISO) CD-ROM Image 'iso' => array( 'pattern' => '^.{32769}CD001', 'group' => 'misc', 'module' => 'iso', 'mime_type' => 'application/octet-stream', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', 'iconv_req' => false, ), // RAR - data - RAR compressed data 'rar' => array( 'pattern' => '^Rar\\!', 'group' => 'archive', 'module' => 'rar', 'mime_type' => 'application/octet-stream', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // SZIP - audio/data - SZIP compressed data 'szip' => array( 'pattern' => '^SZ\\x0A\\x04', 'group' => 'archive', 'module' => 'szip', 'mime_type' => 'application/octet-stream', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // TAR - data - TAR compressed data 'tar' => array( '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}', 'group' => 'archive', 'module' => 'tar', 'mime_type' => 'application/x-tar', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // GZIP - data - GZIP compressed data 'gz' => array( 'pattern' => '^\\x1F\\x8B\\x08', 'group' => 'archive', 'module' => 'gzip', 'mime_type' => 'application/x-gzip', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // ZIP - data - ZIP compressed data 'zip' => array( 'pattern' => '^PK\\x03\\x04', 'group' => 'archive', 'module' => 'zip', 'mime_type' => 'application/zip', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // Misc other formats // PAR2 - data - Parity Volume Set Specification 2.0 'par2' => array ( 'pattern' => '^PAR2\\x00PKT', 'group' => 'misc', 'module' => 'par2', 'mime_type' => 'application/octet-stream', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // PDF - data - Portable Document Format 'pdf' => array( 'pattern' => '^\\x25PDF', 'group' => 'misc', 'module' => 'pdf', 'mime_type' => 'application/pdf', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // MSOFFICE - data - ZIP compressed data 'msoffice' => array( 'pattern' => '^\\xD0\\xCF\\x11\\xE0\\xA1\\xB1\\x1A\\xE1', // D0CF11E == DOCFILE == Microsoft Office Document 'group' => 'misc', 'module' => 'msoffice', 'mime_type' => 'application/octet-stream', 'fail_id3' => 'ERROR', 'fail_ape' => 'ERROR', ), // CUE - data - CUEsheet (index to single-file disc images) 'cue' => array( 'pattern' => '', // empty pattern means cannot be automatically detected, will fall through all other formats and match based on filename and very basic file contents 'group' => 'misc', 'module' => 'cue', 'mime_type' => 'application/octet-stream', ), ); } return $format_info; } public function GetFileFormat(&$filedata, $filename='') { // this function will determine the format of a file based on usually // the first 2-4 bytes of the file (8 bytes for PNG, 16 bytes for JPG, // and in the case of ISO CD image, 6 bytes offset 32kb from the start // of the file). // Identify file format - loop through $format_info and detect with reg expr foreach ($this->GetFileFormatArray() as $format_name => $info) { // The /s switch on preg_match() forces preg_match() NOT to treat // newline (0x0A) characters as special chars but do a binary match if (!empty($info['pattern']) && preg_match('#'.$info['pattern'].'#s', $filedata)) { $info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php'; return $info; } } if (preg_match('#\\.mp[123a]$#i', $filename)) { // Too many mp3 encoders on the market put gabage in front of mpeg files // use assume format on these if format detection failed $GetFileFormatArray = $this->GetFileFormatArray(); $info = $GetFileFormatArray['mp3']; $info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php'; return $info; } elseif (preg_match('#\\.cue$#i', $filename) && preg_match('#FILE "[^"]+" (BINARY\|MOTOROLA\|AIFF\|WAVE\|MP3)#', $filedata)) { // there's not really a useful consistent "magic" at the beginning of .cue files to identify them // so until I think of something better, just go by filename if all other format checks fail // and verify there's at least one instance of "TRACK xx AUDIO" in the file $GetFileFormatArray = $this->GetFileFormatArray(); $info = $GetFileFormatArray['cue']; $info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php'; return $info; } return false; } // converts array to $encoding charset from $this->encoding public function CharConvert(&$array, $encoding) { // identical encoding - end here if ($encoding == $this->encoding) { return; } // loop thru array foreach ($array as $key => $value) { // go recursive if (is_array($value)) { $this->CharConvert($array[$key], $encoding); } // convert string elseif (is_string($value)) { $array[$key] = trim(getid3_lib::iconv_fallback($encoding, $this->encoding, $value)); } } } public function HandleAllTags() { // key name => array (tag name, character encoding) static $tags; if (empty($tags)) { $tags = array( 'asf' => array('asf' , 'UTF-16LE'), 'midi' => array('midi' , 'ISO-8859-1'), 'nsv' => array('nsv' , 'ISO-8859-1'), 'ogg' => array('vorbiscomment' , 'UTF-8'), 'png' => array('png' , 'UTF-8'), 'tiff' => array('tiff' , 'ISO-8859-1'), 'quicktime' => array('quicktime' , 'UTF-8'), 'real' => array('real' , 'ISO-8859-1'), 'vqf' => array('vqf' , 'ISO-8859-1'), 'zip' => array('zip' , 'ISO-8859-1'), 'riff' => array('riff' , 'ISO-8859-1'), 'lyrics3' => array('lyrics3' , 'ISO-8859-1'), 'id3v1' => array('id3v1' , $this->encoding_id3v1), 'id3v2' => array('id3v2' , 'UTF-8'), // not according to the specs (every frame can have a different encoding), but getID3() force-converts all encodings to UTF-8 'ape' => array('ape' , 'UTF-8'), 'cue' => array('cue' , 'ISO-8859-1'), 'matroska' => array('matroska' , 'UTF-8'), 'flac' => array('vorbiscomment' , 'UTF-8'), 'divxtag' => array('divx' , 'ISO-8859-1'), 'iptc' => array('iptc' , 'ISO-8859-1'), ); } // loop through comments array foreach ($tags as $comment_name => $tagname_encoding_array) { list($tag_name, $encoding) = $tagname_encoding_array; // fill in default encoding type if not already present if (isset($this->info[$comment_name]) && !isset($this->info[$comment_name]['encoding'])) { $this->info[$comment_name]['encoding'] = $encoding; } // copy comments if key name set if (!empty($this->info[$comment_name]['comments'])) { foreach ($this->info[$comment_name]['comments'] as $tag_key => $valuearray) { foreach ($valuearray as $key => $value) { if (is_string($value)) { $value = trim($value, " \r\n\t"); // do not trim nulls from $value!! Unicode characters will get mangled if trailing nulls are removed! } if ($value) { if (!is_numeric($key)) { $this->info['tags'][trim($tag_name)][trim($tag_key)][$key] = $value; } else { $this->info['tags'][trim($tag_name)][trim($tag_key)][] = $value; } } } if ($tag_key == 'picture') { unset($this->info[$comment_name]['comments'][$tag_key]); } } if (!isset($this->info['tags'][$tag_name])) { // comments are set but contain nothing but empty strings, so skip continue; } $this->CharConvert($this->info['tags'][$tag_name], $this->info[$comment_name]['encoding']); // only copy gets converted! if ($this->option_tags_html) { foreach ($this->info['tags'][$tag_name] as $tag_key => $valuearray) { $this->info['tags_html'][$tag_name][$tag_key] = getid3_lib::recursiveMultiByteCharString2HTML($valuearray, $this->info[$comment_name]['encoding']); } } } } // pictures can take up a lot of space, and we don't need multiple copies of them // let there be a single copy in [comments][picture], and not elsewhere if (!empty($this->info['tags'])) { $unset_keys = array('tags', 'tags_html'); foreach ($this->info['tags'] as $tagtype => $tagarray) { foreach ($tagarray as $tagname => $tagdata) { if ($tagname == 'picture') { foreach ($tagdata as $key => $tagarray) { $this->info['comments']['picture'][] = $tagarray; if (isset($tagarray['data']) && isset($tagarray['image_mime'])) { if (isset($this->info['tags'][$tagtype][$tagname][$key])) { unset($this->info['tags'][$tagtype][$tagname][$key]); } if (isset($this->info['tags_html'][$tagtype][$tagname][$key])) { unset($this->info['tags_html'][$tagtype][$tagname][$key]); } } } } } foreach ($unset_keys as $unset_key) { // remove possible empty keys from (e.g. [tags][id3v2][picture]) if (empty($this->info[$unset_key][$tagtype]['picture'])) { unset($this->info[$unset_key][$tagtype]['picture']); } if (empty($this->info[$unset_key][$tagtype])) { unset($this->info[$unset_key][$tagtype]); } if (empty($this->info[$unset_key])) { unset($this->info[$unset_key]); } } // remove duplicate copy of picture data from (e.g. [id3v2][comments][picture]) if (isset($this->info[$tagtype]['comments']['picture'])) { unset($this->info[$tagtype]['comments']['picture']); } if (empty($this->info[$tagtype]['comments'])) { unset($this->info[$tagtype]['comments']); } if (empty($this->info[$tagtype])) { unset($this->info[$tagtype]); } } } return true; } public function getHashdata($algorithm) { switch ($algorithm) { case 'md5': case 'sha1': break; default: return $this->error('bad algorithm "'.$algorithm.'" in getHashdata()'); break; } if (!empty($this->info['fileformat']) && !empty($this->info['dataformat']) && ($this->info['fileformat'] == 'ogg') && ($this->info['audio']['dataformat'] == 'vorbis')) { // We cannot get an identical md5_data value for Ogg files where the comments // span more than 1 Ogg page (compared to the same audio data with smaller // comments) using the normal getID3() method of MD5'ing the data between the // end of the comments and the end of the file (minus any trailing tags), // because the page sequence numbers of the pages that the audio data is on // do not match. Under normal circumstances, where comments are smaller than // the nominal 4-8kB page size, then this is not a problem, but if there are // very large comments, the only way around it is to strip off the comment // tags with vorbiscomment and MD5 that file. // This procedure must be applied to ALL Ogg files, not just the ones with // comments larger than 1 page, because the below method simply MD5's the // whole file with the comments stripped, not just the portion after the // comments block (which is the standard getID3() method. // The above-mentioned problem of comments spanning multiple pages and changing // page sequence numbers likely happens for OggSpeex and OggFLAC as well, but // currently vorbiscomment only works on OggVorbis files. if (preg_match('#(1\|ON)#i', ini_get('safe_mode'))) { $this->warning('Failed making system call to vorbiscomment.exe - '.$algorithm.'_data is incorrect - error returned: PHP running in Safe Mode (backtick operator not available)'); $this->info[$algorithm.'_data'] = false; } else { // Prevent user from aborting script $old_abort = ignore_user_abort(true); // Create empty file $empty = tempnam(GETID3_TEMP_DIR, 'getID3'); touch($empty); // Use vorbiscomment to make temp file without comments $temp = tempnam(GETID3_TEMP_DIR, 'getID3'); $file = $this->info['filenamepath']; if (GETID3_OS_ISWINDOWS) { if (file_exists(GETID3_HELPERAPPSDIR.'vorbiscomment.exe')) { $commandline = '"'.GETID3_HELPERAPPSDIR.'vorbiscomment.exe" -w -c "'.$empty.'" "'.$file.'" "'.$temp.'"'; $VorbisCommentError = `$commandline`; } else { $VorbisCommentError = 'vorbiscomment.exe not found in '.GETID3_HELPERAPPSDIR; } } else { $commandline = 'vorbiscomment -w -c "'.$empty.'" "'.$file.'" "'.$temp.'" 2>&1'; $commandline = 'vorbiscomment -w -c '.escapeshellarg($empty).' '.escapeshellarg($file).' '.escapeshellarg($temp).' 2>&1'; $VorbisCommentError = `$commandline`; } if (!empty($VorbisCommentError)) { $this->warning('Failed making system call to vorbiscomment(.exe) - '.$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); $this->info[$algorithm.'_data'] = false; } else { // Get hash of newly created file switch ($algorithm) { case 'md5': $this->info[$algorithm.'_data'] = md5_file($temp); break; case 'sha1': $this->info[$algorithm.'_data'] = sha1_file($temp); break; } } // Clean up unlink($empty); unlink($temp); // Reset abort setting ignore_user_abort($old_abort); } } else { if (!empty($this->info['avdataoffset']) \|\| (isset($this->info['avdataend']) && ($this->info['avdataend'] < $this->info['filesize']))) { // get hash from part of file $this->info[$algorithm.'_data'] = getid3_lib::hash_data($this->info['filenamepath'], $this->info['avdataoffset'], $this->info['avdataend'], $algorithm); } else { // get hash from whole file switch ($algorithm) { case 'md5': $this->info[$algorithm.'_data'] = md5_file($this->info['filenamepath']); break; case 'sha1': $this->info[$algorithm.'_data'] = sha1_file($this->info['filenamepath']); break; } } } return true; } public function ChannelsBitratePlaytimeCalculations() { // set channelmode on audio if (!empty($this->info['audio']['channelmode']) \|\| !isset($this->info['audio']['channels'])) { // ignore } elseif ($this->info['audio']['channels'] == 1) { $this->info['audio']['channelmode'] = 'mono'; } elseif ($this->info['audio']['channels'] == 2) { $this->info['audio']['channelmode'] = 'stereo'; } // Calculate combined bitrate - audio + video $CombinedBitrate = 0; $CombinedBitrate += (isset($this->info['audio']['bitrate']) ? $this->info['audio']['bitrate'] : 0); $CombinedBitrate += (isset($this->info['video']['bitrate']) ? $this->info['video']['bitrate'] : 0); if (($CombinedBitrate > 0) && empty($this->info['bitrate'])) { $this->info['bitrate'] = $CombinedBitrate; } //if ((isset($this->info['video']) && !isset($this->info['video']['bitrate'])) \|\| (isset($this->info['audio']) && !isset($this->info['audio']['bitrate']))) { // // for example, VBR MPEG video files cannot determine video bitrate: // // should not set overall bitrate and playtime from audio bitrate only // unset($this->info['bitrate']); //} // video bitrate undetermined, but calculable if (isset($this->info['video']['dataformat']) && $this->info['video']['dataformat'] && (!isset($this->info['video']['bitrate']) \|\| ($this->info['video']['bitrate'] == 0))) { // if video bitrate not set if (isset($this->info['audio']['bitrate']) && ($this->info['audio']['bitrate'] > 0) && ($this->info['audio']['bitrate'] == $this->info['bitrate'])) { // AND if audio bitrate is set to same as overall bitrate if (isset($this->info['playtime_seconds']) && ($this->info['playtime_seconds'] > 0)) { // AND if playtime is set if (isset($this->info['avdataend']) && isset($this->info['avdataoffset'])) { // AND if AV data offset start/end is known // THEN we can calculate the video bitrate $this->info['bitrate'] = round((($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['playtime_seconds']); $this->info['video']['bitrate'] = $this->info['bitrate'] - $this->info['audio']['bitrate']; } } } } if ((!isset($this->info['playtime_seconds']) \|\| ($this->info['playtime_seconds'] <= 0)) && !empty($this->info['bitrate'])) { $this->info['playtime_seconds'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['bitrate']; } if (!isset($this->info['bitrate']) && !empty($this->info['playtime_seconds'])) { $this->info['bitrate'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['playtime_seconds']; } if (isset($this->info['bitrate']) && empty($this->info['audio']['bitrate']) && empty($this->info['video']['bitrate'])) { if (isset($this->info['audio']['dataformat']) && empty($this->info['video']['resolution_x'])) { // audio only $this->info['audio']['bitrate'] = $this->info['bitrate']; } elseif (isset($this->info['video']['resolution_x']) && empty($this->info['audio']['dataformat'])) { // video only $this->info['video']['bitrate'] = $this->info['bitrate']; } } // Set playtime string if (!empty($this->info['playtime_seconds']) && empty($this->info['playtime_string'])) { $this->info['playtime_string'] = getid3_lib::PlaytimeString($this->info['playtime_seconds']); } } public function CalculateCompressionRatioVideo() { if (empty($this->info['video'])) { return false; } if (empty($this->info['video']['resolution_x']) \|\| empty($this->info['video']['resolution_y'])) { return false; } if (empty($this->info['video']['bits_per_sample'])) { return false; } switch ($this->info['video']['dataformat']) { case 'bmp': case 'gif': case 'jpeg': case 'jpg': case 'png': case 'tiff': $FrameRate = 1; $PlaytimeSeconds = 1; $BitrateCompressed = $this->info['filesize'] * 8; break; default: if (!empty($this->info['video']['frame_rate'])) { $FrameRate = $this->info['video']['frame_rate']; } else { return false; } if (!empty($this->info['playtime_seconds'])) { $PlaytimeSeconds = $this->info['playtime_seconds']; } else { return false; } if (!empty($this->info['video']['bitrate'])) { $BitrateCompressed = $this->info['video']['bitrate']; } else { return false; } break; } $BitrateUncompressed = $this->info['video']['resolution_x'] * $this->info['video']['resolution_y'] * $this->info['video']['bits_per_sample'] * $FrameRate; $this->info['video']['compression_ratio'] = $BitrateCompressed / $BitrateUncompressed; return true; } public function CalculateCompressionRatioAudio() { if (empty($this->info['audio']['bitrate']) \|\| empty($this->info['audio']['channels']) \|\| empty($this->info['audio']['sample_rate']) \|\| !is_numeric($this->info['audio']['sample_rate'])) { return false; } $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']) ? $this->info['audio']['bits_per_sample'] : 16)); if (!empty($this->info['audio']['streams'])) { foreach ($this->info['audio']['streams'] as $streamnumber => $streamdata) { if (!empty($streamdata['bitrate']) && !empty($streamdata['channels']) && !empty($streamdata['sample_rate'])) { $this->info['audio']['streams'][$streamnumber]['compression_ratio'] = $streamdata['bitrate'] / ($streamdata['channels'] * $streamdata['sample_rate'] * (!empty($streamdata['bits_per_sample']) ? $streamdata['bits_per_sample'] : 16)); } } } return true; } public function CalculateReplayGain() { if (isset($this->info['replay_gain'])) { if (!isset($this->info['replay_gain']['reference_volume'])) { $this->info['replay_gain']['reference_volume'] = (double) 89.0; } if (isset($this->info['replay_gain']['track']['adjustment'])) { $this->info['replay_gain']['track']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['track']['adjustment']; } if (isset($this->info['replay_gain']['album']['adjustment'])) { $this->info['replay_gain']['album']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['album']['adjustment']; } if (isset($this->info['replay_gain']['track']['peak'])) { $this->info['replay_gain']['track']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['track']['peak']); } if (isset($this->info['replay_gain']['album']['peak'])) { $this->info['replay_gain']['album']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['album']['peak']); } } return true; } public function ProcessAudioStreams() { if (!empty($this->info['audio']['bitrate']) \|\| !empty($this->info['audio']['channels']) \|\| !empty($this->info['audio']['sample_rate'])) { if (!isset($this->info['audio']['streams'])) { foreach ($this->info['audio'] as $key => $value) { if ($key != 'streams') { $this->info['audio']['streams'][0][$key] = $value; } } } } return true; } public function getid3_tempnam() { return tempnam($this->tempdir, 'gI3'); } public function include_module($name) { //if (!file_exists($this->include_path.'module.'.$name.'.php')) { if (!file_exists(GETID3_INCLUDEPATH.'module.'.$name.'.php')) { throw new getid3_exception('Required module.'.$name.'.php is missing.'); } include_once(GETID3_INCLUDEPATH.'module.'.$name.'.php'); return true; } public static function is_writable ($filename) { $ret = is_writable($filename); if (!$ret) { $perms = fileperms($filename); $ret = ($perms & 0x0080) \|\| ($perms & 0x0010) \|\| ($perms & 0x0002); } return $ret; } } abstract class getid3_handler { /** * @var getID3 / protected $getid3; // pointer protected $data_string_flag = false; // analyzing filepointer or string protected $data_string = ''; // string to analyze protected $data_string_position = 0; // seek position in string protected $data_string_length = 0; // string length private $dependency_to = null; public function __construct(getID3 $getid3, $call_module=null) { $this->getid3 = $getid3; if ($call_module) { $this->dependency_to = str_replace('getid3_', '', $call_module); } } // Analyze from file pointer abstract public function Analyze(); // Analyze from string instead public function AnalyzeString($string) { // Enter string mode $this->setStringMode($string); // Save info $saved_avdataoffset = $this->getid3->info['avdataoffset']; $saved_avdataend = $this->getid3->info['avdataend']; $saved_filesize = (isset($this->getid3->info['filesize']) ? $this->getid3->info['filesize'] : null); // may be not set if called as dependency without openfile() call // Reset some info $this->getid3->info['avdataoffset'] = 0; $this->getid3->info['avdataend'] = $this->getid3->info['filesize'] = $this->data_string_length; // Analyze $this->Analyze(); // Restore some info $this->getid3->info['avdataoffset'] = $saved_avdataoffset; $this->getid3->info['avdataend'] = $saved_avdataend; $this->getid3->info['filesize'] = $saved_filesize; // Exit string mode $this->data_string_flag = false; } public function setStringMode($string) { $this->data_string_flag = true; $this->data_string = $string; $this->data_string_length = strlen($string); } protected function ftell() { if ($this->data_string_flag) { return $this->data_string_position; } return ftell($this->getid3->fp); } protected function fread($bytes) { if ($this->data_string_flag) { $this->data_string_position += $bytes; return substr($this->data_string, $this->data_string_position - $bytes, $bytes); } $pos = $this->ftell() + $bytes; if (!getid3_lib::intValueSupported($pos)) { throw new getid3_exception('cannot fread('.$bytes.' from '.$this->ftell().') because beyond PHP filesystem limit', 10); } //return fread($this->getid3->fp, $bytes); / * http://www.getid3.org/phpBB3/viewtopic.php?t=1930 * "I found out that the root cause for the problem was how getID3 uses the PHP system function fread(). * It seems to assume that fread() would always return as many bytes as were requested. * However, according the PHP manual (http://php.net/manual/en/function.fread.php), this is the case only with regular local files, but not e.g. with Linux pipes. * The call may return only part of the requested data and a new call is needed to get more." */ $contents = ''; do { $part = fread($this->getid3->fp, $bytes); $partLength = strlen($part); $bytes -= $partLength; $contents .= $part; } while (($bytes > 0) && ($partLength > 0)); return $contents; } protected function fseek($bytes, $whence=SEEK_SET) { if ($this->data_string_flag) { switch ($whence) { case SEEK_SET: $this->data_string_position = $bytes; break; case SEEK_CUR: $this->data_string_position += $bytes; break; case SEEK_END: $this->data_string_position = $this->data_string_length + $bytes; break; } return 0; } else { $pos = $bytes; if ($whence == SEEK_CUR) { $pos = $this->ftell() + $bytes; } elseif ($whence == SEEK_END) { $pos = $this->getid3->info['filesize'] + $bytes; } if (!getid3_lib::intValueSupported($pos)) { throw new getid3_exception('cannot fseek('.$pos.') because beyond PHP filesystem limit', 10); } } return fseek($this->getid3->fp, $bytes, $whence); } protected function feof() { if ($this->data_string_flag) { return $this->data_string_position >= $this->data_string_length; } return feof($this->getid3->fp); } final protected function isDependencyFor($module) { return $this->dependency_to == $module; } protected function error($text) { $this->getid3->info['error'][] = $text; return false; } protected function warning($text) { return $this->getid3->warning($text); } protected function notice($text) { // does nothing for now } public function saveAttachment($name, $offset, $length, $image_mime=null) { try { // do not extract at all if ($this->getid3->option_save_attachments === getID3::ATTACHMENTS_NONE) { $attachment = null; // do not set any // extract to return array } elseif ($this->getid3->option_save_attachments === getID3::ATTACHMENTS_INLINE) { $this->fseek($offset); $attachment = $this->fread($length); // get whole data in one pass, till it is anyway stored in memory if ($attachment === false \|\| strlen($attachment) != $length) { throw new Exception('failed to read attachment data'); } // assume directory path is given } else { // set up destination path $dir = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->getid3->option_save_attachments), DIRECTORY_SEPARATOR); if (!is_dir($dir) \|\| !getID3::is_writable($dir)) { // check supplied directory throw new Exception('supplied path ('.$dir.') does not exist, or is not writable'); } $dest = $dir.DIRECTORY_SEPARATOR.$name.($image_mime ? '.'.getid3_lib::ImageExtFromMime($image_mime) : ''); // create dest file if (($fp_dest = fopen($dest, 'wb')) == false) { throw new Exception('failed to create file '.$dest); } // copy data $this->fseek($offset); $buffersize = ($this->data_string_flag ? $length : $this->getid3->fread_buffer_size()); $bytesleft = $length; while ($bytesleft > 0) { if (($buffer = $this->fread(min($buffersize, $bytesleft))) === false \|\| ($byteswritten = fwrite($fp_dest, $buffer)) === false \|\| ($byteswritten === 0)) { throw new Exception($buffer === false ? 'not enough data to read' : 'failed to write to destination file, may be not enough disk space'); } $bytesleft -= $byteswritten; } fclose($fp_dest); $attachment = $dest; } } catch (Exception $e) { // close and remove dest file if created if (isset($fp_dest) && is_resource($fp_dest)) { fclose($fp_dest); unlink($dest); } // do not set any is case of error $attachment = null; $this->warning('Failed to extract attachment '.$name.': '.$e->getMessage()); } // seek to the end of attachment $this->fseek($offset + $length); return $attachment; } } class getid3_exception extends Exception { public $message; } Back

Edit File : getid3.php | Size : 65.01 KB

<?php
/////////////////////////////////////////////////////////////////
/// getID3() by James Heinrich <info@getid3.org>               //
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
//          also https://github.com/JamesHeinrich/getID3       //
/////////////////////////////////////////////////////////////////
//                                                             //
// Please see readme.txt for more information                  //
//                                                            ///
/////////////////////////////////////////////////////////////////

// define a constant rather than looking up every time it is needed
if (!defined('GETID3_OS_ISWINDOWS')) {
	define('GETID3_OS_ISWINDOWS', (stripos(PHP_OS, 'WIN') === 0));
}
// Get base path of getID3() - ONCE
if (!defined('GETID3_INCLUDEPATH')) {
	define('GETID3_INCLUDEPATH', dirname(__FILE__).DIRECTORY_SEPARATOR);
}
// Workaround Bug #39923 (https://bugs.php.net/bug.php?id=39923)
if (!defined('IMG_JPG') && defined('IMAGETYPE_JPEG')) {
	define('IMG_JPG', IMAGETYPE_JPEG);
}
if (!defined('ENT_SUBSTITUTE')) { // PHP5.3 adds ENT_IGNORE, PHP5.4 adds ENT_SUBSTITUTE
	define('ENT_SUBSTITUTE', (defined('ENT_IGNORE') ? ENT_IGNORE : 8));
}

// attempt to define temp dir as something flexible but reliable
$temp_dir = ini_get('upload_tmp_dir');
if ($temp_dir && (!is_dir($temp_dir) || !is_readable($temp_dir))) {
	$temp_dir = '';
}
if (!$temp_dir && function_exists('sys_get_temp_dir')) { // sys_get_temp_dir added in PHP v5.2.1
	// sys_get_temp_dir() may give inaccessible temp dir, e.g. with open_basedir on virtual hosts
	$temp_dir = sys_get_temp_dir();
}
$temp_dir = @realpath($temp_dir); // see https://github.com/JamesHeinrich/getID3/pull/10
$open_basedir = ini_get('open_basedir');
if ($open_basedir) {
	// e.g. "/var/www/vhosts/getid3.org/httpdocs/:/tmp/"
	$temp_dir     = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $temp_dir);
	$open_basedir = str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $open_basedir);
	if (substr($temp_dir, -1, 1) != DIRECTORY_SEPARATOR) {
		$temp_dir .= DIRECTORY_SEPARATOR;
	}
	$found_valid_tempdir = false;
	$open_basedirs = explode(PATH_SEPARATOR, $open_basedir);
	foreach ($open_basedirs as $basedir) {
		if (substr($basedir, -1, 1) != DIRECTORY_SEPARATOR) {
			$basedir .= DIRECTORY_SEPARATOR;
		}
		if (preg_match('#^'.preg_quote($basedir).'#', $temp_dir)) {
			$found_valid_tempdir = true;
			break;
		}
	}
	if (!$found_valid_tempdir) {
		$temp_dir = '';
	}
	unset($open_basedirs, $found_valid_tempdir, $basedir);
}
if (!$temp_dir) {
	$temp_dir = '*'; // invalid directory name should force tempnam() to use system default temp dir
}
// $temp_dir = '/something/else/';  // feel free to override temp dir here if it works better for your system
if (!defined('GETID3_TEMP_DIR')) {
	define('GETID3_TEMP_DIR', $temp_dir);
}
unset($open_basedir, $temp_dir);

// End: Defines

class getID3
{
	// public: Settings
	public $encoding        = 'UTF-8';        // CASE SENSITIVE! - i.e. (must be supported by iconv()). Examples:  ISO-8859-1  UTF-8  UTF-16  UTF-16BE
	public $encoding_id3v1  = 'ISO-8859-1';   // Should always be 'ISO-8859-1', but some tags may be written in other encodings such as 'EUC-CN' or 'CP1252'

// public: Optional tag checks - disable for speed.
	public $option_tag_id3v1         = true;  // Read and process ID3v1 tags
	public $option_tag_id3v2         = true;  // Read and process ID3v2 tags
	public $option_tag_lyrics3       = true;  // Read and process Lyrics3 tags
	public $option_tag_apetag        = true;  // Read and process APE tags
	public $option_tags_process      = true;  // Copy tags to root key 'tags' and encode to $this->encoding
	public $option_tags_html         = true;  // Copy tags to root key 'tags_html' properly translated from various encodings to HTML entities

// public: Optional tag/comment calucations
	public $option_extra_info        = true;  // Calculate additional info such as bitrate, channelmode etc

// public: Optional handling of embedded attachments (e.g. images)
	public $option_save_attachments  = true; // defaults to true (ATTACHMENTS_INLINE) for backward compatibility

// public: Optional calculations
	public $option_md5_data          = false; // Get MD5 sum of data part - slow
	public $option_md5_data_source   = false; // Use MD5 of source file if availble - only FLAC and OptimFROG
	public $option_sha1_data         = false; // Get SHA1 sum of data part - slow
	public $option_max_2gb_check     = null;  // Check whether file is larger than 2GB and thus not supported by 32-bit PHP (null: auto-detect based on PHP_INT_MAX)

// public: Read buffer size in bytes
	public $option_fread_buffer_size = 32768;

// Public variables
	public $filename;                         // Filename of file being analysed.
	public $fp;                               // Filepointer to file being analysed.
	public $info;                             // Result array.
	public $tempdir = GETID3_TEMP_DIR;
	public $memory_limit = 0;

// Protected variables
	protected $startup_error   = '';
	protected $startup_warning = '';

const VERSION           = '1.9.14-201706111222';
	const FREAD_BUFFER_SIZE = 32768;

const ATTACHMENTS_NONE   = false;
	const ATTACHMENTS_INLINE = true;

// public: constructor
	public function __construct() {

// Check memory
		$this->memory_limit = ini_get('memory_limit');
		if (preg_match('#([0-9]+) ?M#i', $this->memory_limit, $matches)) {
			// could be stored as "16M" rather than 16777216 for example
			$this->memory_limit = $matches[1] * 1048576;
		} elseif (preg_match('#([0-9]+) ?G#i', $this->memory_limit, $matches)) { // The 'G' modifier is available since PHP 5.1.0
			// could be stored as "2G" rather than 2147483648 for example
			$this->memory_limit = $matches[1] * 1073741824;
		}
		if ($this->memory_limit <= 0) {
			// memory limits probably disabled
		} elseif ($this->memory_limit <= 4194304) {
			$this->startup_error .= 'PHP has less than 4MB available memory and will very likely run out. Increase memory_limit in php.ini'."\n";
		} elseif ($this->memory_limit <= 12582912) {
			$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'."\n";
		}

// Check safe_mode off
		if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {
			$this->warning('WARNING: Safe mode is on, shorten support disabled, md5data/sha1data for ogg vorbis disabled, ogg vorbos/flac tag writing disabled.');
		}

if (($mbstring_func_overload = ini_get('mbstring.func_overload')) && ($mbstring_func_overload & 0x02)) {
			// http://php.net/manual/en/mbstring.overload.php
			// "mbstring.func_overload in php.ini is a positive value that represents a combination of bitmasks specifying the categories of functions to be overloaded. It should be set to 1 to overload the mail() function. 2 for string functions, 4 for regular expression functions"
			// getID3 cannot run when string functions are overloaded. It doesn't matter if mail() or ereg* functions are overloaded since getID3 does not use those.
			$this->startup_error .= 'WARNING: php.ini contains "mbstring.func_overload = '.ini_get('mbstring.func_overload').'", getID3 cannot run with this setting (bitmask 2 (string functions) cannot be set). Recommended to disable entirely.'."\n";
		}

// Check for magic_quotes_runtime
		if (function_exists('get_magic_quotes_runtime')) {
			if (get_magic_quotes_runtime()) {
				$this->startup_error .= 'magic_quotes_runtime must be disabled before running getID3(). Surround getid3 block by set_magic_quotes_runtime(0) and set_magic_quotes_runtime(1).'."\n";
			}
		}

// Check for magic_quotes_gpc
		if (function_exists('magic_quotes_gpc')) {
			if (get_magic_quotes_gpc()) {
				$this->startup_error .= 'magic_quotes_gpc must be disabled before running getID3(). Surround getid3 block by set_magic_quotes_gpc(0) and set_magic_quotes_gpc(1).'."\n";
			}
		}

// Load support library
		if (!include_once(GETID3_INCLUDEPATH.'getid3.lib.php')) {
			$this->startup_error .= 'getid3.lib.php is missing or corrupt'."\n";
		}

if ($this->option_max_2gb_check === null) {
			$this->option_max_2gb_check = (PHP_INT_MAX <= 2147483647);
		}

// Needed for Windows only:
		// Define locations of helper applications for Shorten, VorbisComment, MetaFLAC
		//   as well as other helper functions such as head, tail, md5sum, etc
		// This path cannot contain spaces, but the below code will attempt to get the
		//   8.3-equivalent path automatically
		// IMPORTANT: This path must include the trailing slash
		if (GETID3_OS_ISWINDOWS && !defined('GETID3_HELPERAPPSDIR')) {

$helperappsdir = GETID3_INCLUDEPATH.'..'.DIRECTORY_SEPARATOR.'helperapps'; // must not have any space in this path

if (!is_dir($helperappsdir)) {
				$this->startup_warning .= '"'.$helperappsdir.'" cannot be defined as GETID3_HELPERAPPSDIR because it does not exist'."\n";
			} elseif (strpos(realpath($helperappsdir), ' ') !== false) {
				$DirPieces = explode(DIRECTORY_SEPARATOR, realpath($helperappsdir));
				$path_so_far = array();
				foreach ($DirPieces as $key => $value) {
					if (strpos($value, ' ') !== false) {
						if (!empty($path_so_far)) {
							$commandline = 'dir /x '.escapeshellarg(implode(DIRECTORY_SEPARATOR, $path_so_far));
							$dir_listing = `$commandline`;
							$lines = explode("\n", $dir_listing);
							foreach ($lines as $line) {
								$line = trim($line);
								if (preg_match('#^([0-9/]{10}) +([0-9:]{4,5}( [AP]M)?) +(<DIR>|[0-9,]+) +([^ ]{0,11}) +(.+)$#', $line, $matches)) {
									list($dummy, $date, $time, $ampm, $filesize, $shortname, $filename) = $matches;
									if ((strtoupper($filesize) == '<DIR>') && (strtolower($filename) == strtolower($value))) {
										$value = $shortname;
									}
								}
							}
						} else {
							$this->startup_warning .= 'GETID3_HELPERAPPSDIR must not have any spaces in it - use 8dot3 naming convention if neccesary. You can run "dir /x" from the commandline to see the correct 8.3-style names.'."\n";
						}
					}
					$path_so_far[] = $value;
				}
				$helperappsdir = implode(DIRECTORY_SEPARATOR, $path_so_far);
			}
			define('GETID3_HELPERAPPSDIR', $helperappsdir.DIRECTORY_SEPARATOR);
		}

if (!empty($this->startup_error)) {
			echo $this->startup_error;
			throw new getid3_exception($this->startup_error);
		}

return true;
	}

public function version() {
		return self::VERSION;
	}

public function fread_buffer_size() {
		return $this->option_fread_buffer_size;
	}

// public: setOption
	public function setOption($optArray) {
		if (!is_array($optArray) || empty($optArray)) {
			return false;
		}
		foreach ($optArray as $opt => $val) {
			if (isset($this->$opt) === false) {
				continue;
			}
			$this->$opt = $val;
		}
		return true;
	}

public function openfile($filename, $filesize=null) {
		try {
			if (!empty($this->startup_error)) {
				throw new getid3_exception($this->startup_error);
			}
			if (!empty($this->startup_warning)) {
				foreach (explode("\n", $this->startup_warning) as $startup_warning) {
					$this->warning($startup_warning);
				}
			}

// init result array and set parameters
			$this->filename = $filename;
			$this->info = array();
			$this->info['GETID3_VERSION']   = $this->version();
			$this->info['php_memory_limit'] = (($this->memory_limit > 0) ? $this->memory_limit : false);

// remote files not supported
			if (preg_match('#^(ht|f)tp://#', $filename)) {
				throw new getid3_exception('Remote files are not supported - please copy the file locally first');
			}

$filename = str_replace('/', DIRECTORY_SEPARATOR, $filename);
			$filename = preg_replace('#(?<!gs:)('.preg_quote(DIRECTORY_SEPARATOR).'{2,})#', DIRECTORY_SEPARATOR, $filename);

// open local file
			//if (is_readable($filename) && is_file($filename) && ($this->fp = fopen($filename, 'rb'))) { // see http://www.getid3.org/phpBB3/viewtopic.php?t=1720
			if ((is_readable($filename) || file_exists($filename)) && is_file($filename) && ($this->fp = fopen($filename, 'rb'))) {
				// great
			} else {
				$errormessagelist = array();
				if (!is_readable($filename)) {
					$errormessagelist[] = '!is_readable';
				}
				if (!is_file($filename)) {
					$errormessagelist[] = '!is_file';
				}
				if (!file_exists($filename)) {
					$errormessagelist[] = '!file_exists';
				}
				if (empty($errormessagelist)) {
					$errormessagelist[] = 'fopen failed';
				}
				throw new getid3_exception('Could not open "'.$filename.'" ('.implode('; ', $errormessagelist).')');
			}

$this->info['filesize'] = (!is_null($filesize) ? $filesize : filesize($filename));
			// set redundant parameters - might be needed in some include file
			// filenames / filepaths in getID3 are always expressed with forward slashes (unix-style) for both Windows and other to try and minimize confusion
			$filename = str_replace('\\', '/', $filename);
			$this->info['filepath']     = str_replace('\\', '/', realpath(dirname($filename)));
			$this->info['filename']     = getid3_lib::mb_basename($filename);
			$this->info['filenamepath'] = $this->info['filepath'].'/'.$this->info['filename'];

// set more parameters
			$this->info['avdataoffset']        = 0;
			$this->info['avdataend']           = $this->info['filesize'];
			$this->info['fileformat']          = '';                // filled in later
			$this->info['audio']['dataformat'] = '';                // filled in later, unset if not used
			$this->info['video']['dataformat'] = '';                // filled in later, unset if not used
			$this->info['tags']                = array();           // filled in later, unset if not used
			$this->info['error']               = array();           // filled in later, unset if not used
			$this->info['warning']             = array();           // filled in later, unset if not used
			$this->info['comments']            = array();           // filled in later, unset if not used
			$this->info['encoding']            = $this->encoding;   // required by id3v2 and iso modules - can be unset at the end if desired

// option_max_2gb_check
			if ($this->option_max_2gb_check) {
				// PHP (32-bit all, and 64-bit Windows) doesn't support integers larger than 2^31 (~2GB)
				// filesize() simply returns (filesize % (pow(2, 32)), no matter the actual filesize
				// ftell() returns 0 if seeking to the end is beyond the range of unsigned integer
				$fseek = fseek($this->fp, 0, SEEK_END);
				if (($fseek < 0) || (($this->info['filesize'] != 0) && (ftell($this->fp) == 0)) ||
					($this->info['filesize'] < 0) ||
					(ftell($this->fp) < 0)) {
						$real_filesize = getid3_lib::getFileSizeSyscall($this->info['filenamepath']);

if ($real_filesize === false) {
							unset($this->info['filesize']);
							fclose($this->fp);
							throw new getid3_exception('Unable to determine actual filesize. File is most likely larger than '.round(PHP_INT_MAX / 1073741824).'GB and is not supported by PHP.');
						} elseif (getid3_lib::intValueSupported($real_filesize)) {
							unset($this->info['filesize']);
							fclose($this->fp);
							throw new getid3_exception('PHP seems to think the file is larger than '.round(PHP_INT_MAX / 1073741824).'GB, but filesystem reports it as '.number_format($real_filesize, 3).'GB, please report to info@getid3.org');
						}
						$this->info['filesize'] = $real_filesize;
						$this->warning('File is larger than '.round(PHP_INT_MAX / 1073741824).'GB (filesystem reports it as '.number_format($real_filesize, 3).'GB) and is not properly supported by PHP.');
				}
			}

return true;

} catch (Exception $e) {
			$this->error($e->getMessage());
		}
		return false;
	}

// public: analyze file
	public function analyze($filename, $filesize=null, $original_filename='') {
		try {
			if (!$this->openfile($filename, $filesize)) {
				return $this->info;
			}

// Handle tags
			foreach (array('id3v2'=>'id3v2', 'id3v1'=>'id3v1', 'apetag'=>'ape', 'lyrics3'=>'lyrics3') as $tag_name => $tag_key) {
				$option_tag = 'option_tag_'.$tag_name;
				if ($this->$option_tag) {
					$this->include_module('tag.'.$tag_name);
					try {
						$tag_class = 'getid3_'.$tag_name;
						$tag = new $tag_class($this);
						$tag->Analyze();
					}
					catch (getid3_exception $e) {
						throw $e;
					}
				}
			}
			if (isset($this->info['id3v2']['tag_offset_start'])) {
				$this->info['avdataoffset'] = max($this->info['avdataoffset'], $this->info['id3v2']['tag_offset_end']);
			}
			foreach (array('id3v1'=>'id3v1', 'apetag'=>'ape', 'lyrics3'=>'lyrics3') as $tag_name => $tag_key) {
				if (isset($this->info[$tag_key]['tag_offset_start'])) {
					$this->info['avdataend'] = min($this->info['avdataend'], $this->info[$tag_key]['tag_offset_start']);
				}
			}

// ID3v2 detection (NOT parsing), even if ($this->option_tag_id3v2 == false) done to make fileformat easier
			if (!$this->option_tag_id3v2) {
				fseek($this->fp, 0);
				$header = fread($this->fp, 10);
				if ((substr($header, 0, 3) == 'ID3') && (strlen($header) == 10)) {
					$this->info['id3v2']['header']        = true;
					$this->info['id3v2']['majorversion']  = ord($header[3]);
					$this->info['id3v2']['minorversion']  = ord($header[4]);
					$this->info['avdataoffset']          += getid3_lib::BigEndian2Int(substr($header, 6, 4), 1) + 10; // length of ID3v2 tag in 10-byte header doesn't include 10-byte header length
				}
			}

// read 32 kb file data
			fseek($this->fp, $this->info['avdataoffset']);
			$formattest = fread($this->fp, 32774);

// determine format
			$determined_format = $this->GetFileFormat($formattest, ($original_filename ? $original_filename : $filename));

// unable to determine file format
			if (!$determined_format) {
				fclose($this->fp);
				return $this->error('unable to determine file format');
			}

// check for illegal ID3 tags
			if (isset($determined_format['fail_id3']) && (in_array('id3v1', $this->info['tags']) || in_array('id3v2', $this->info['tags']))) {
				if ($determined_format['fail_id3'] === 'ERROR') {
					fclose($this->fp);
					return $this->error('ID3 tags not allowed on this file type.');
				} elseif ($determined_format['fail_id3'] === 'WARNING') {
					$this->warning('ID3 tags not allowed on this file type.');
				}
			}

// check for illegal APE tags
			if (isset($determined_format['fail_ape']) && in_array('ape', $this->info['tags'])) {
				if ($determined_format['fail_ape'] === 'ERROR') {
					fclose($this->fp);
					return $this->error('APE tags not allowed on this file type.');
				} elseif ($determined_format['fail_ape'] === 'WARNING') {
					$this->warning('APE tags not allowed on this file type.');
				}
			}

// set mime type
			$this->info['mime_type'] = $determined_format['mime_type'];

// supported format signature pattern detected, but module deleted
			if (!file_exists(GETID3_INCLUDEPATH.$determined_format['include'])) {
				fclose($this->fp);
				return $this->error('Format not supported, module "'.$determined_format['include'].'" was removed.');
			}

// module requires mb_convert_encoding/iconv support
			// Check encoding/iconv support
			if (!empty($determined_format['iconv_req']) && !function_exists('mb_convert_encoding') && !function_exists('iconv') && !in_array($this->encoding, array('ISO-8859-1', 'UTF-8', 'UTF-16LE', 'UTF-16BE', 'UTF-16'))) {
				$errormessage = 'mb_convert_encoding() or iconv() support is required for this module ('.$determined_format['include'].') for encodings other than ISO-8859-1, UTF-8, UTF-16LE, UTF16-BE, UTF-16. ';
				if (GETID3_OS_ISWINDOWS) {
					$errormessage .= 'PHP does not have mb_convert_encoding() or iconv() support. Please enable php_mbstring.dll / php_iconv.dll in php.ini, and copy php_mbstring.dll / iconv.dll from c:/php/dlls to c:/windows/system32';
				} else {
					$errormessage .= 'PHP is not compiled with mb_convert_encoding() or iconv() support. Please recompile with the --enable-mbstring / --with-iconv switch';
				}
				return $this->error($errormessage);
			}

// include module
			include_once(GETID3_INCLUDEPATH.$determined_format['include']);

// instantiate module class
			$class_name = 'getid3_'.$determined_format['module'];
			if (!class_exists($class_name)) {
				return $this->error('Format not supported, module "'.$determined_format['include'].'" is corrupt.');
			}
			$class = new $class_name($this);
			$class->Analyze();
			unset($class);

// close file
			fclose($this->fp);

// process all tags - copy to 'tags' and convert charsets
			if ($this->option_tags_process) {
				$this->HandleAllTags();
			}

// perform more calculations
			if ($this->option_extra_info) {
				$this->ChannelsBitratePlaytimeCalculations();
				$this->CalculateCompressionRatioVideo();
				$this->CalculateCompressionRatioAudio();
				$this->CalculateReplayGain();
				$this->ProcessAudioStreams();
			}

// get the MD5 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
			if ($this->option_md5_data) {
				// do not calc md5_data if md5_data_source is present - set by flac only - future MPC/SV8 too
				if (!$this->option_md5_data_source || empty($this->info['md5_data_source'])) {
					$this->getHashdata('md5');
				}
			}

// get the SHA1 sum of the audio/video portion of the file - without ID3/APE/Lyrics3/etc header/footer tags
			if ($this->option_sha1_data) {
				$this->getHashdata('sha1');
			}

// remove undesired keys
			$this->CleanUp();

} catch (Exception $e) {
			$this->error('Caught exception: '.$e->getMessage());
		}

// return info array
		return $this->info;
	}

// private: error handling
	public function error($message) {
		$this->CleanUp();
		if (!isset($this->info['error'])) {
			$this->info['error'] = array();
		}
		$this->info['error'][] = $message;
		return $this->info;
	}

// private: warning handling
	public function warning($message) {
		$this->info['warning'][] = $message;
		return true;
	}

// private: CleanUp
	private function CleanUp() {

// remove possible empty keys
		$AVpossibleEmptyKeys = array('dataformat', 'bits_per_sample', 'encoder_options', 'streams', 'bitrate');
		foreach ($AVpossibleEmptyKeys as $dummy => $key) {
			if (empty($this->info['audio'][$key]) && isset($this->info['audio'][$key])) {
				unset($this->info['audio'][$key]);
			}
			if (empty($this->info['video'][$key]) && isset($this->info['video'][$key])) {
				unset($this->info['video'][$key]);
			}
		}

// remove empty root keys
		if (!empty($this->info)) {
			foreach ($this->info as $key => $value) {
				if (empty($this->info[$key]) && ($this->info[$key] !== 0) && ($this->info[$key] !== '0')) {
					unset($this->info[$key]);
				}
			}
		}

// remove meaningless entries from unknown-format files
		if (empty($this->info['fileformat'])) {
			if (isset($this->info['avdataoffset'])) {
				unset($this->info['avdataoffset']);
			}
			if (isset($this->info['avdataend'])) {
				unset($this->info['avdataend']);
			}
		}

// remove possible duplicated identical entries
		if (!empty($this->info['error'])) {
			$this->info['error'] = array_values(array_unique($this->info['error']));
		}
		if (!empty($this->info['warning'])) {
			$this->info['warning'] = array_values(array_unique($this->info['warning']));
		}

// remove "global variable" type keys
		unset($this->info['php_memory_limit']);

return true;
	}

// return array containing information about all supported formats
	public function GetFileFormatArray() {
		static $format_info = array();
		if (empty($format_info)) {
			$format_info = array(

// Audio formats

// AC-3   - audio      - Dolby AC-3 / Dolby Digital
				'ac3'  => array(
							'pattern'   => '^\\x0B\\x77',
							'group'     => 'audio',
							'module'    => 'ac3',
							'mime_type' => 'audio/ac3',
						),

// AAC  - audio       - Advanced Audio Coding (AAC) - ADIF format
				'adif' => array(
							'pattern'   => '^ADIF',
							'group'     => 'audio',
							'module'    => 'aac',
							'mime_type' => 'application/octet-stream',
							'fail_ape'  => 'WARNING',
						),

/*
				// AA   - audio       - Audible Audiobook
				'aa'   => array(
							'pattern'   => '^.{4}\\x57\\x90\\x75\\x36',
							'group'     => 'audio',
							'module'    => 'aa',
							'mime_type' => 'audio/audible',
						),
*/
				// AAC  - audio       - Advanced Audio Coding (AAC) - ADTS format (very similar to MP3)
				'adts' => array(
							'pattern'   => '^\\xFF[\\xF0-\\xF1\\xF8-\\xF9]',
							'group'     => 'audio',
							'module'    => 'aac',
							'mime_type' => 'application/octet-stream',
							'fail_ape'  => 'WARNING',
						),

// AU   - audio       - NeXT/Sun AUdio (AU)
				'au'   => array(
							'pattern'   => '^\\.snd',
							'group'     => 'audio',
							'module'    => 'au',
							'mime_type' => 'audio/basic',
						),

// AMR  - audio       - Adaptive Multi Rate
				'amr'  => array(
							'pattern'   => '^\\x23\\x21AMR\\x0A', // #!AMR[0A]
							'group'     => 'audio',
							'module'    => 'amr',
							'mime_type' => 'audio/amr',
						),

// AVR  - audio       - Audio Visual Research
				'avr'  => array(
							'pattern'   => '^2BIT',
							'group'     => 'audio',
							'module'    => 'avr',
							'mime_type' => 'application/octet-stream',
						),

// BONK - audio       - Bonk v0.9+
				'bonk' => array(
							'pattern'   => '^\\x00(BONK|INFO|META| ID3)',
							'group'     => 'audio',
							'module'    => 'bonk',
							'mime_type' => 'audio/xmms-bonk',
						),

// DSF  - audio       - Direct Stream Digital (DSD) Storage Facility files (DSF) - https://en.wikipedia.org/wiki/Direct_Stream_Digital
				'dsf'  => array(
							'pattern'   => '^DSD ',  // including trailing space: 44 53 44 20
							'group'     => 'audio',
							'module'    => 'dsf',
							'mime_type' => 'audio/dsd',
						),

// DSS  - audio       - Digital Speech Standard
				'dss'  => array(
							'pattern'   => '^[\\x02-\\x06]ds[s2]',
							'group'     => 'audio',
							'module'    => 'dss',
							'mime_type' => 'application/octet-stream',
						),

// DTS  - audio       - Dolby Theatre System
				'dts'  => array(
							'pattern'   => '^\\x7F\\xFE\\x80\\x01',
							'group'     => 'audio',
							'module'    => 'dts',
							'mime_type' => 'audio/dts',
						),

// FLAC - audio       - Free Lossless Audio Codec
				'flac' => array(
							'pattern'   => '^fLaC',
							'group'     => 'audio',
							'module'    => 'flac',
							'mime_type' => 'audio/x-flac',
						),

// LA   - audio       - Lossless Audio (LA)
				'la'   => array(
							'pattern'   => '^LA0[2-4]',
							'group'     => 'audio',
							'module'    => 'la',
							'mime_type' => 'application/octet-stream',
						),

// LPAC - audio       - Lossless Predictive Audio Compression (LPAC)
				'lpac' => array(
							'pattern'   => '^LPAC',
							'group'     => 'audio',
							'module'    => 'lpac',
							'mime_type' => 'application/octet-stream',
						),

// MIDI - audio       - MIDI (Musical Instrument Digital Interface)
				'midi' => array(
							'pattern'   => '^MThd',
							'group'     => 'audio',
							'module'    => 'midi',
							'mime_type' => 'audio/midi',
						),

// MAC  - audio       - Monkey's Audio Compressor
				'mac'  => array(
							'pattern'   => '^MAC ',
							'group'     => 'audio',
							'module'    => 'monkey',
							'mime_type' => 'application/octet-stream',
						),

// has been known to produce false matches in random files (e.g. JPEGs), leave out until more precise matching available
//				// MOD  - audio       - MODule (assorted sub-formats)
//				'mod'  => array(
//							'pattern'   => '^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)',
//							'group'     => 'audio',
//							'module'    => 'mod',
//							'option'    => 'mod',
//							'mime_type' => 'audio/mod',
//						),

// MOD  - audio       - MODule (Impulse Tracker)
				'it'   => array(
							'pattern'   => '^IMPM',
							'group'     => 'audio',
							'module'    => 'mod',
							//'option'    => 'it',
							'mime_type' => 'audio/it',
						),

// MOD  - audio       - MODule (eXtended Module, various sub-formats)
				'xm'   => array(
							'pattern'   => '^Extended Module',
							'group'     => 'audio',
							'module'    => 'mod',
							//'option'    => 'xm',
							'mime_type' => 'audio/xm',
						),

// MOD  - audio       - MODule (ScreamTracker)
				's3m'  => array(
							'pattern'   => '^.{44}SCRM',
							'group'     => 'audio',
							'module'    => 'mod',
							//'option'    => 's3m',
							'mime_type' => 'audio/s3m',
						),

// MPC  - audio       - Musepack / MPEGplus
				'mpc'  => array(
							'pattern'   => '^(MPCK|MP\\+|[\\x00\\x01\\x10\\x11\\x40\\x41\\x50\\x51\\x80\\x81\\x90\\x91\\xC0\\xC1\\xD0\\xD1][\\x20-\\x37][\\x00\\x20\\x40\\x60\\x80\\xA0\\xC0\\xE0])',
							'group'     => 'audio',
							'module'    => 'mpc',
							'mime_type' => 'audio/x-musepack',
						),

// MP3  - audio       - MPEG-audio Layer 3 (very similar to AAC-ADTS)
				'mp3'  => array(
							'pattern'   => '^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\x0B\\x10-\\x1B\\x20-\\x2B\\x30-\\x3B\\x40-\\x4B\\x50-\\x5B\\x60-\\x6B\\x70-\\x7B\\x80-\\x8B\\x90-\\x9B\\xA0-\\xAB\\xB0-\\xBB\\xC0-\\xCB\\xD0-\\xDB\\xE0-\\xEB\\xF0-\\xFB]',
							'group'     => 'audio',
							'module'    => 'mp3',
							'mime_type' => 'audio/mpeg',
						),

// OFR  - audio       - OptimFROG
				'ofr'  => array(
							'pattern'   => '^(\\*RIFF|OFR)',
							'group'     => 'audio',
							'module'    => 'optimfrog',
							'mime_type' => 'application/octet-stream',
						),

// RKAU - audio       - RKive AUdio compressor
				'rkau' => array(
							'pattern'   => '^RKA',
							'group'     => 'audio',
							'module'    => 'rkau',
							'mime_type' => 'application/octet-stream',
						),

// SHN  - audio       - Shorten
				'shn'  => array(
							'pattern'   => '^ajkg',
							'group'     => 'audio',
							'module'    => 'shorten',
							'mime_type' => 'audio/xmms-shn',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// TTA  - audio       - TTA Lossless Audio Compressor (http://tta.corecodec.org)
				'tta'  => array(
							'pattern'   => '^TTA',  // could also be '^TTA(\\x01|\\x02|\\x03|2|1)'
							'group'     => 'audio',
							'module'    => 'tta',
							'mime_type' => 'application/octet-stream',
						),

// VOC  - audio       - Creative Voice (VOC)
				'voc'  => array(
							'pattern'   => '^Creative Voice File',
							'group'     => 'audio',
							'module'    => 'voc',
							'mime_type' => 'audio/voc',
						),

// VQF  - audio       - transform-domain weighted interleave Vector Quantization Format (VQF)
				'vqf'  => array(
							'pattern'   => '^TWIN',
							'group'     => 'audio',
							'module'    => 'vqf',
							'mime_type' => 'application/octet-stream',
						),

// WV  - audio        - WavPack (v4.0+)
				'wv'   => array(
							'pattern'   => '^wvpk',
							'group'     => 'audio',
							'module'    => 'wavpack',
							'mime_type' => 'application/octet-stream',
						),

// Audio-Video formats

// ASF  - audio/video - Advanced Streaming Format, Windows Media Video, Windows Media Audio
				'asf'  => array(
							'pattern'   => '^\\x30\\x26\\xB2\\x75\\x8E\\x66\\xCF\\x11\\xA6\\xD9\\x00\\xAA\\x00\\x62\\xCE\\x6C',
							'group'     => 'audio-video',
							'module'    => 'asf',
							'mime_type' => 'video/x-ms-asf',
							'iconv_req' => false,
						),

// BINK - audio/video - Bink / Smacker
				'bink' => array(
							'pattern'   => '^(BIK|SMK)',
							'group'     => 'audio-video',
							'module'    => 'bink',
							'mime_type' => 'application/octet-stream',
						),

// FLV  - audio/video - FLash Video
				'flv' => array(
							'pattern'   => '^FLV[\\x01]',
							'group'     => 'audio-video',
							'module'    => 'flv',
							'mime_type' => 'video/x-flv',
						),

// MKAV - audio/video - Mastroka
				'matroska' => array(
							'pattern'   => '^\\x1A\\x45\\xDF\\xA3',
							'group'     => 'audio-video',
							'module'    => 'matroska',
							'mime_type' => 'video/x-matroska', // may also be audio/x-matroska
						),

// MPEG - audio/video - MPEG (Moving Pictures Experts Group)
				'mpeg' => array(
							'pattern'   => '^\\x00\\x00\\x01[\\xB3\\xBA]',
							'group'     => 'audio-video',
							'module'    => 'mpeg',
							'mime_type' => 'video/mpeg',
						),

// NSV  - audio/video - Nullsoft Streaming Video (NSV)
				'nsv'  => array(
							'pattern'   => '^NSV[sf]',
							'group'     => 'audio-video',
							'module'    => 'nsv',
							'mime_type' => 'application/octet-stream',
						),

// Ogg  - audio/video - Ogg (Ogg-Vorbis, Ogg-FLAC, Speex, Ogg-Theora(*), Ogg-Tarkin(*))
				'ogg'  => array(
							'pattern'   => '^OggS',
							'group'     => 'audio',
							'module'    => 'ogg',
							'mime_type' => 'application/ogg',
							'fail_id3'  => 'WARNING',
							'fail_ape'  => 'WARNING',
						),

// QT   - audio/video - Quicktime
				'quicktime' => array(
							'pattern'   => '^.{4}(cmov|free|ftyp|mdat|moov|pnot|skip|wide)',
							'group'     => 'audio-video',
							'module'    => 'quicktime',
							'mime_type' => 'video/quicktime',
						),

// 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)
				'riff' => array(
							'pattern'   => '^(RIFF|SDSS|FORM)',
							'group'     => 'audio-video',
							'module'    => 'riff',
							'mime_type' => 'audio/x-wav',
							'fail_ape'  => 'WARNING',
						),

// Real - audio/video - RealAudio, RealVideo
				'real' => array(
							'pattern'   => '^\\.(RMF|ra)',
							'group'     => 'audio-video',
							'module'    => 'real',
							'mime_type' => 'audio/x-realaudio',
						),

// SWF - audio/video - ShockWave Flash
				'swf' => array(
							'pattern'   => '^(F|C)WS',
							'group'     => 'audio-video',
							'module'    => 'swf',
							'mime_type' => 'application/x-shockwave-flash',
						),

// TS - audio/video - MPEG-2 Transport Stream
				'ts' => array(
							'pattern'   => '^(\\x47.{187}){10,}', // packets are 188 bytes long and start with 0x47 "G".  Check for at least 10 packets matching this pattern
							'group'     => 'audio-video',
							'module'    => 'ts',
							'mime_type' => 'video/MP2T',
						),

// Still-Image formats

// BMP  - still image - Bitmap (Windows, OS/2; uncompressed, RLE8, RLE4)
				'bmp'  => array(
							'pattern'   => '^BM',
							'group'     => 'graphic',
							'module'    => 'bmp',
							'mime_type' => 'image/bmp',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// GIF  - still image - Graphics Interchange Format
				'gif'  => array(
							'pattern'   => '^GIF',
							'group'     => 'graphic',
							'module'    => 'gif',
							'mime_type' => 'image/gif',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// JPEG - still image - Joint Photographic Experts Group (JPEG)
				'jpg'  => array(
							'pattern'   => '^\\xFF\\xD8\\xFF',
							'group'     => 'graphic',
							'module'    => 'jpg',
							'mime_type' => 'image/jpeg',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// PCD  - still image - Kodak Photo CD
				'pcd'  => array(
							'pattern'   => '^.{2048}PCD_IPI\\x00',
							'group'     => 'graphic',
							'module'    => 'pcd',
							'mime_type' => 'image/x-photo-cd',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// PNG  - still image - Portable Network Graphics (PNG)
				'png'  => array(
							'pattern'   => '^\\x89\\x50\\x4E\\x47\\x0D\\x0A\\x1A\\x0A',
							'group'     => 'graphic',
							'module'    => 'png',
							'mime_type' => 'image/png',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// SVG  - still image - Scalable Vector Graphics (SVG)
				'svg'  => array(
							'pattern'   => '(<!DOCTYPE svg PUBLIC |xmlns="http://www\\.w3\\.org/2000/svg")',
							'group'     => 'graphic',
							'module'    => 'svg',
							'mime_type' => 'image/svg+xml',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// TIFF - still image - Tagged Information File Format (TIFF)
				'tiff' => array(
							'pattern'   => '^(II\\x2A\\x00|MM\\x00\\x2A)',
							'group'     => 'graphic',
							'module'    => 'tiff',
							'mime_type' => 'image/tiff',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// EFAX - still image - eFax (TIFF derivative)
				'efax'  => array(
							'pattern'   => '^\\xDC\\xFE',
							'group'     => 'graphic',
							'module'    => 'efax',
							'mime_type' => 'image/efax',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// Data formats

// ISO  - data        - International Standards Organization (ISO) CD-ROM Image
				'iso'  => array(
							'pattern'   => '^.{32769}CD001',
							'group'     => 'misc',
							'module'    => 'iso',
							'mime_type' => 'application/octet-stream',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
							'iconv_req' => false,
						),

// RAR  - data        - RAR compressed data
				'rar'  => array(
							'pattern'   => '^Rar\\!',
							'group'     => 'archive',
							'module'    => 'rar',
							'mime_type' => 'application/octet-stream',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// SZIP - audio/data  - SZIP compressed data
				'szip' => array(
							'pattern'   => '^SZ\\x0A\\x04',
							'group'     => 'archive',
							'module'    => 'szip',
							'mime_type' => 'application/octet-stream',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// TAR  - data        - TAR compressed data
				'tar'  => array(
							'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}',
							'group'     => 'archive',
							'module'    => 'tar',
							'mime_type' => 'application/x-tar',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// GZIP  - data        - GZIP compressed data
				'gz'  => array(
							'pattern'   => '^\\x1F\\x8B\\x08',
							'group'     => 'archive',
							'module'    => 'gzip',
							'mime_type' => 'application/x-gzip',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// ZIP  - data         - ZIP compressed data
				'zip'  => array(
							'pattern'   => '^PK\\x03\\x04',
							'group'     => 'archive',
							'module'    => 'zip',
							'mime_type' => 'application/zip',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// Misc other formats

// PAR2 - data        - Parity Volume Set Specification 2.0
				'par2' => array (
							'pattern'   => '^PAR2\\x00PKT',
							'group'     => 'misc',
							'module'    => 'par2',
							'mime_type' => 'application/octet-stream',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// PDF  - data        - Portable Document Format
				'pdf'  => array(
							'pattern'   => '^\\x25PDF',
							'group'     => 'misc',
							'module'    => 'pdf',
							'mime_type' => 'application/pdf',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// MSOFFICE  - data   - ZIP compressed data
				'msoffice' => array(
							'pattern'   => '^\\xD0\\xCF\\x11\\xE0\\xA1\\xB1\\x1A\\xE1', // D0CF11E == DOCFILE == Microsoft Office Document
							'group'     => 'misc',
							'module'    => 'msoffice',
							'mime_type' => 'application/octet-stream',
							'fail_id3'  => 'ERROR',
							'fail_ape'  => 'ERROR',
						),

// CUE  - data       - CUEsheet (index to single-file disc images)
				 'cue' => array(
							'pattern'   => '', // empty pattern means cannot be automatically detected, will fall through all other formats and match based on filename and very basic file contents
							'group'     => 'misc',
							'module'    => 'cue',
							'mime_type' => 'application/octet-stream',
						   ),

);
		}

return $format_info;
	}

public function GetFileFormat(&$filedata, $filename='') {
		// this function will determine the format of a file based on usually
		// the first 2-4 bytes of the file (8 bytes for PNG, 16 bytes for JPG,
		// and in the case of ISO CD image, 6 bytes offset 32kb from the start
		// of the file).

// Identify file format - loop through $format_info and detect with reg expr
		foreach ($this->GetFileFormatArray() as $format_name => $info) {
			// The /s switch on preg_match() forces preg_match() NOT to treat
			// newline (0x0A) characters as special chars but do a binary match
			if (!empty($info['pattern']) && preg_match('#'.$info['pattern'].'#s', $filedata)) {
				$info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
				return $info;
			}
		}

if (preg_match('#\\.mp[123a]$#i', $filename)) {
			// Too many mp3 encoders on the market put gabage in front of mpeg files
			// use assume format on these if format detection failed
			$GetFileFormatArray = $this->GetFileFormatArray();
			$info = $GetFileFormatArray['mp3'];
			$info['include'] = 'module.'.$info['group'].'.'.$info['module'].'.php';
			return $info;
		} elseif (preg_match('#\\.cue$#i', $filename) && preg_match('#FILE "[^"]+" (BINARY|MOTOROLA|AIFF|WAVE|MP3)#', $filedata)) {
			// there's not really a useful consistent "magic" at the beginning of .cue files to identify them
			// so until I think of something better, just go by filename if all other format checks fail
			// and verify there's at least one instance of "TRACK xx AUDIO" in the file
			$GetFileFormatArray = $this->GetFileFormatArray();
			$info = $GetFileFormatArray['cue'];
			$info['include']   = 'module.'.$info['group'].'.'.$info['module'].'.php';
			return $info;
		}

return false;
	}

// converts array to $encoding charset from $this->encoding
	public function CharConvert(&$array, $encoding) {

// identical encoding - end here
		if ($encoding == $this->encoding) {
			return;
		}

// loop thru array
		foreach ($array as $key => $value) {

// go recursive
			if (is_array($value)) {
				$this->CharConvert($array[$key], $encoding);
			}

// convert string
			elseif (is_string($value)) {
				$array[$key] = trim(getid3_lib::iconv_fallback($encoding, $this->encoding, $value));
			}
		}
	}

public function HandleAllTags() {

// key name => array (tag name, character encoding)
		static $tags;
		if (empty($tags)) {
			$tags = array(
				'asf'       => array('asf'           , 'UTF-16LE'),
				'midi'      => array('midi'          , 'ISO-8859-1'),
				'nsv'       => array('nsv'           , 'ISO-8859-1'),
				'ogg'       => array('vorbiscomment' , 'UTF-8'),
				'png'       => array('png'           , 'UTF-8'),
				'tiff'      => array('tiff'          , 'ISO-8859-1'),
				'quicktime' => array('quicktime'     , 'UTF-8'),
				'real'      => array('real'          , 'ISO-8859-1'),
				'vqf'       => array('vqf'           , 'ISO-8859-1'),
				'zip'       => array('zip'           , 'ISO-8859-1'),
				'riff'      => array('riff'          , 'ISO-8859-1'),
				'lyrics3'   => array('lyrics3'       , 'ISO-8859-1'),
				'id3v1'     => array('id3v1'         , $this->encoding_id3v1),
				'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
				'ape'       => array('ape'           , 'UTF-8'),
				'cue'       => array('cue'           , 'ISO-8859-1'),
				'matroska'  => array('matroska'      , 'UTF-8'),
				'flac'      => array('vorbiscomment' , 'UTF-8'),
				'divxtag'   => array('divx'          , 'ISO-8859-1'),
				'iptc'      => array('iptc'          , 'ISO-8859-1'),
			);
		}

// loop through comments array
		foreach ($tags as $comment_name => $tagname_encoding_array) {
			list($tag_name, $encoding) = $tagname_encoding_array;

// fill in default encoding type if not already present
			if (isset($this->info[$comment_name]) && !isset($this->info[$comment_name]['encoding'])) {
				$this->info[$comment_name]['encoding'] = $encoding;
			}

// copy comments if key name set
			if (!empty($this->info[$comment_name]['comments'])) {
				foreach ($this->info[$comment_name]['comments'] as $tag_key => $valuearray) {
					foreach ($valuearray as $key => $value) {
						if (is_string($value)) {
							$value = trim($value, " \r\n\t"); // do not trim nulls from $value!! Unicode characters will get mangled if trailing nulls are removed!
						}
						if ($value) {
							if (!is_numeric($key)) {
								$this->info['tags'][trim($tag_name)][trim($tag_key)][$key] = $value;
							} else {
								$this->info['tags'][trim($tag_name)][trim($tag_key)][]     = $value;
							}
						}
					}
					if ($tag_key == 'picture') {
						unset($this->info[$comment_name]['comments'][$tag_key]);
					}
				}

if (!isset($this->info['tags'][$tag_name])) {
					// comments are set but contain nothing but empty strings, so skip
					continue;
				}

$this->CharConvert($this->info['tags'][$tag_name], $this->info[$comment_name]['encoding']);           // only copy gets converted!

if ($this->option_tags_html) {
					foreach ($this->info['tags'][$tag_name] as $tag_key => $valuearray) {
						$this->info['tags_html'][$tag_name][$tag_key] = getid3_lib::recursiveMultiByteCharString2HTML($valuearray, $this->info[$comment_name]['encoding']);
					}
				}

}

// pictures can take up a lot of space, and we don't need multiple copies of them
		// let there be a single copy in [comments][picture], and not elsewhere
		if (!empty($this->info['tags'])) {
			$unset_keys = array('tags', 'tags_html');
			foreach ($this->info['tags'] as $tagtype => $tagarray) {
				foreach ($tagarray as $tagname => $tagdata) {
					if ($tagname == 'picture') {
						foreach ($tagdata as $key => $tagarray) {
							$this->info['comments']['picture'][] = $tagarray;
							if (isset($tagarray['data']) && isset($tagarray['image_mime'])) {
								if (isset($this->info['tags'][$tagtype][$tagname][$key])) {
									unset($this->info['tags'][$tagtype][$tagname][$key]);
								}
								if (isset($this->info['tags_html'][$tagtype][$tagname][$key])) {
									unset($this->info['tags_html'][$tagtype][$tagname][$key]);
								}
							}
						}
					}
				}
				foreach ($unset_keys as $unset_key) {
					// remove possible empty keys from (e.g. [tags][id3v2][picture])
					if (empty($this->info[$unset_key][$tagtype]['picture'])) {
						unset($this->info[$unset_key][$tagtype]['picture']);
					}
					if (empty($this->info[$unset_key][$tagtype])) {
						unset($this->info[$unset_key][$tagtype]);
					}
					if (empty($this->info[$unset_key])) {
						unset($this->info[$unset_key]);
					}
				}
				// remove duplicate copy of picture data from (e.g. [id3v2][comments][picture])
				if (isset($this->info[$tagtype]['comments']['picture'])) {
					unset($this->info[$tagtype]['comments']['picture']);
				}
				if (empty($this->info[$tagtype]['comments'])) {
					unset($this->info[$tagtype]['comments']);
				}
				if (empty($this->info[$tagtype])) {
					unset($this->info[$tagtype]);
				}
			}
		}
		return true;
	}

public function getHashdata($algorithm) {
		switch ($algorithm) {
			case 'md5':
			case 'sha1':
				break;

default:
				return $this->error('bad algorithm "'.$algorithm.'" in getHashdata()');
				break;
		}

if (!empty($this->info['fileformat']) && !empty($this->info['dataformat']) && ($this->info['fileformat'] == 'ogg') && ($this->info['audio']['dataformat'] == 'vorbis')) {

// We cannot get an identical md5_data value for Ogg files where the comments
			// span more than 1 Ogg page (compared to the same audio data with smaller
			// comments) using the normal getID3() method of MD5'ing the data between the
			// end of the comments and the end of the file (minus any trailing tags),
			// because the page sequence numbers of the pages that the audio data is on
			// do not match. Under normal circumstances, where comments are smaller than
			// the nominal 4-8kB page size, then this is not a problem, but if there are
			// very large comments, the only way around it is to strip off the comment
			// tags with vorbiscomment and MD5 that file.
			// This procedure must be applied to ALL Ogg files, not just the ones with
			// comments larger than 1 page, because the below method simply MD5's the
			// whole file with the comments stripped, not just the portion after the
			// comments block (which is the standard getID3() method.

// The above-mentioned problem of comments spanning multiple pages and changing
			// page sequence numbers likely happens for OggSpeex and OggFLAC as well, but
			// currently vorbiscomment only works on OggVorbis files.

if (preg_match('#(1|ON)#i', ini_get('safe_mode'))) {

$this->warning('Failed making system call to vorbiscomment.exe - '.$algorithm.'_data is incorrect - error returned: PHP running in Safe Mode (backtick operator not available)');
				$this->info[$algorithm.'_data'] = false;

} else {

// Prevent user from aborting script
				$old_abort = ignore_user_abort(true);

// Create empty file
				$empty = tempnam(GETID3_TEMP_DIR, 'getID3');
				touch($empty);

// Use vorbiscomment to make temp file without comments
				$temp = tempnam(GETID3_TEMP_DIR, 'getID3');
				$file = $this->info['filenamepath'];

if (GETID3_OS_ISWINDOWS) {

if (file_exists(GETID3_HELPERAPPSDIR.'vorbiscomment.exe')) {

$commandline = '"'.GETID3_HELPERAPPSDIR.'vorbiscomment.exe" -w -c "'.$empty.'" "'.$file.'" "'.$temp.'"';
						$VorbisCommentError = `$commandline`;

} else {

$VorbisCommentError = 'vorbiscomment.exe not found in '.GETID3_HELPERAPPSDIR;

}

} else {

$commandline = 'vorbiscomment -w -c "'.$empty.'" "'.$file.'" "'.$temp.'" 2>&1';
					$commandline = 'vorbiscomment -w -c '.escapeshellarg($empty).' '.escapeshellarg($file).' '.escapeshellarg($temp).' 2>&1';
					$VorbisCommentError = `$commandline`;

}

if (!empty($VorbisCommentError)) {

$this->warning('Failed making system call to vorbiscomment(.exe) - '.$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);
					$this->info[$algorithm.'_data'] = false;

} else {

// Get hash of newly created file
					switch ($algorithm) {
						case 'md5':
							$this->info[$algorithm.'_data'] = md5_file($temp);
							break;

case 'sha1':
							$this->info[$algorithm.'_data'] = sha1_file($temp);
							break;
					}
				}

// Clean up
				unlink($empty);
				unlink($temp);

// Reset abort setting
				ignore_user_abort($old_abort);

}

} else {

if (!empty($this->info['avdataoffset']) || (isset($this->info['avdataend']) && ($this->info['avdataend'] < $this->info['filesize']))) {

// get hash from part of file
				$this->info[$algorithm.'_data'] = getid3_lib::hash_data($this->info['filenamepath'], $this->info['avdataoffset'], $this->info['avdataend'], $algorithm);

} else {

// get hash from whole file
				switch ($algorithm) {
					case 'md5':
						$this->info[$algorithm.'_data'] = md5_file($this->info['filenamepath']);
						break;

case 'sha1':
						$this->info[$algorithm.'_data'] = sha1_file($this->info['filenamepath']);
						break;
				}
			}

}
		return true;
	}

public function ChannelsBitratePlaytimeCalculations() {

// set channelmode on audio
		if (!empty($this->info['audio']['channelmode']) || !isset($this->info['audio']['channels'])) {
			// ignore
		} elseif ($this->info['audio']['channels'] == 1) {
			$this->info['audio']['channelmode'] = 'mono';
		} elseif ($this->info['audio']['channels'] == 2) {
			$this->info['audio']['channelmode'] = 'stereo';
		}

// Calculate combined bitrate - audio + video
		$CombinedBitrate  = 0;
		$CombinedBitrate += (isset($this->info['audio']['bitrate']) ? $this->info['audio']['bitrate'] : 0);
		$CombinedBitrate += (isset($this->info['video']['bitrate']) ? $this->info['video']['bitrate'] : 0);
		if (($CombinedBitrate > 0) && empty($this->info['bitrate'])) {
			$this->info['bitrate'] = $CombinedBitrate;
		}
		//if ((isset($this->info['video']) && !isset($this->info['video']['bitrate'])) || (isset($this->info['audio']) && !isset($this->info['audio']['bitrate']))) {
		//	// for example, VBR MPEG video files cannot determine video bitrate:
		//	// should not set overall bitrate and playtime from audio bitrate only
		//	unset($this->info['bitrate']);
		//}

// video bitrate undetermined, but calculable
		if (isset($this->info['video']['dataformat']) && $this->info['video']['dataformat'] && (!isset($this->info['video']['bitrate']) || ($this->info['video']['bitrate'] == 0))) {
			// if video bitrate not set
			if (isset($this->info['audio']['bitrate']) && ($this->info['audio']['bitrate'] > 0) && ($this->info['audio']['bitrate'] == $this->info['bitrate'])) {
				// AND if audio bitrate is set to same as overall bitrate
				if (isset($this->info['playtime_seconds']) && ($this->info['playtime_seconds'] > 0)) {
					// AND if playtime is set
					if (isset($this->info['avdataend']) && isset($this->info['avdataoffset'])) {
						// AND if AV data offset start/end is known
						// THEN we can calculate the video bitrate
						$this->info['bitrate'] = round((($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['playtime_seconds']);
						$this->info['video']['bitrate'] = $this->info['bitrate'] - $this->info['audio']['bitrate'];
					}
				}
			}
		}

if ((!isset($this->info['playtime_seconds']) || ($this->info['playtime_seconds'] <= 0)) && !empty($this->info['bitrate'])) {
			$this->info['playtime_seconds'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['bitrate'];
		}

if (!isset($this->info['bitrate']) && !empty($this->info['playtime_seconds'])) {
			$this->info['bitrate'] = (($this->info['avdataend'] - $this->info['avdataoffset']) * 8) / $this->info['playtime_seconds'];
		}
		if (isset($this->info['bitrate']) && empty($this->info['audio']['bitrate']) && empty($this->info['video']['bitrate'])) {
			if (isset($this->info['audio']['dataformat']) && empty($this->info['video']['resolution_x'])) {
				// audio only
				$this->info['audio']['bitrate'] = $this->info['bitrate'];
			} elseif (isset($this->info['video']['resolution_x']) && empty($this->info['audio']['dataformat'])) {
				// video only
				$this->info['video']['bitrate'] = $this->info['bitrate'];
			}
		}

// Set playtime string
		if (!empty($this->info['playtime_seconds']) && empty($this->info['playtime_string'])) {
			$this->info['playtime_string'] = getid3_lib::PlaytimeString($this->info['playtime_seconds']);
		}
	}

public function CalculateCompressionRatioVideo() {
		if (empty($this->info['video'])) {
			return false;
		}
		if (empty($this->info['video']['resolution_x']) || empty($this->info['video']['resolution_y'])) {
			return false;
		}
		if (empty($this->info['video']['bits_per_sample'])) {
			return false;
		}

switch ($this->info['video']['dataformat']) {
			case 'bmp':
			case 'gif':
			case 'jpeg':
			case 'jpg':
			case 'png':
			case 'tiff':
				$FrameRate = 1;
				$PlaytimeSeconds = 1;
				$BitrateCompressed = $this->info['filesize'] * 8;
				break;

default:
				if (!empty($this->info['video']['frame_rate'])) {
					$FrameRate = $this->info['video']['frame_rate'];
				} else {
					return false;
				}
				if (!empty($this->info['playtime_seconds'])) {
					$PlaytimeSeconds = $this->info['playtime_seconds'];
				} else {
					return false;
				}
				if (!empty($this->info['video']['bitrate'])) {
					$BitrateCompressed = $this->info['video']['bitrate'];
				} else {
					return false;
				}
				break;
		}
		$BitrateUncompressed = $this->info['video']['resolution_x'] * $this->info['video']['resolution_y'] * $this->info['video']['bits_per_sample'] * $FrameRate;

$this->info['video']['compression_ratio'] = $BitrateCompressed / $BitrateUncompressed;
		return true;
	}

public function CalculateCompressionRatioAudio() {
		if (empty($this->info['audio']['bitrate']) || empty($this->info['audio']['channels']) || empty($this->info['audio']['sample_rate']) || !is_numeric($this->info['audio']['sample_rate'])) {
			return false;
		}
		$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));

if (!empty($this->info['audio']['streams'])) {
			foreach ($this->info['audio']['streams'] as $streamnumber => $streamdata) {
				if (!empty($streamdata['bitrate']) && !empty($streamdata['channels']) && !empty($streamdata['sample_rate'])) {
					$this->info['audio']['streams'][$streamnumber]['compression_ratio'] = $streamdata['bitrate'] / ($streamdata['channels'] * $streamdata['sample_rate'] * (!empty($streamdata['bits_per_sample']) ? $streamdata['bits_per_sample'] : 16));
				}
			}
		}
		return true;
	}

public function CalculateReplayGain() {
		if (isset($this->info['replay_gain'])) {
			if (!isset($this->info['replay_gain']['reference_volume'])) {
				$this->info['replay_gain']['reference_volume'] = (double) 89.0;
			}
			if (isset($this->info['replay_gain']['track']['adjustment'])) {
				$this->info['replay_gain']['track']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['track']['adjustment'];
			}
			if (isset($this->info['replay_gain']['album']['adjustment'])) {
				$this->info['replay_gain']['album']['volume'] = $this->info['replay_gain']['reference_volume'] - $this->info['replay_gain']['album']['adjustment'];
			}

if (isset($this->info['replay_gain']['track']['peak'])) {
				$this->info['replay_gain']['track']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['track']['peak']);
			}
			if (isset($this->info['replay_gain']['album']['peak'])) {
				$this->info['replay_gain']['album']['max_noclip_gain'] = 0 - getid3_lib::RGADamplitude2dB($this->info['replay_gain']['album']['peak']);
			}
		}
		return true;
	}

public function ProcessAudioStreams() {
		if (!empty($this->info['audio']['bitrate']) || !empty($this->info['audio']['channels']) || !empty($this->info['audio']['sample_rate'])) {
			if (!isset($this->info['audio']['streams'])) {
				foreach ($this->info['audio'] as $key => $value) {
					if ($key != 'streams') {
						$this->info['audio']['streams'][0][$key] = $value;
					}
				}
			}
		}
		return true;
	}

public function getid3_tempnam() {
		return tempnam($this->tempdir, 'gI3');
	}

public function include_module($name) {
		//if (!file_exists($this->include_path.'module.'.$name.'.php')) {
		if (!file_exists(GETID3_INCLUDEPATH.'module.'.$name.'.php')) {
			throw new getid3_exception('Required module.'.$name.'.php is missing.');
		}
		include_once(GETID3_INCLUDEPATH.'module.'.$name.'.php');
		return true;
	}

public static function is_writable ($filename) {
        $ret = is_writable($filename);

if (!$ret) {
            $perms = fileperms($filename);
            $ret = ($perms & 0x0080) || ($perms & 0x0010) || ($perms & 0x0002);
        }

return $ret;
    }

}

abstract class getid3_handler {

/**
	* @var getID3
	*/
	protected $getid3;                       // pointer

protected $data_string_flag     = false; // analyzing filepointer or string
	protected $data_string          = '';    // string to analyze
	protected $data_string_position = 0;     // seek position in string
	protected $data_string_length   = 0;     // string length

private $dependency_to = null;

public function __construct(getID3 $getid3, $call_module=null) {
		$this->getid3 = $getid3;

if ($call_module) {
			$this->dependency_to = str_replace('getid3_', '', $call_module);
		}
	}

// Analyze from file pointer
	abstract public function Analyze();

// Analyze from string instead
	public function AnalyzeString($string) {
		// Enter string mode
		$this->setStringMode($string);

// Save info
		$saved_avdataoffset = $this->getid3->info['avdataoffset'];
		$saved_avdataend    = $this->getid3->info['avdataend'];
		$saved_filesize     = (isset($this->getid3->info['filesize']) ? $this->getid3->info['filesize'] : null); // may be not set if called as dependency without openfile() call

// Reset some info
		$this->getid3->info['avdataoffset'] = 0;
		$this->getid3->info['avdataend']    = $this->getid3->info['filesize'] = $this->data_string_length;

// Analyze
		$this->Analyze();

// Restore some info
		$this->getid3->info['avdataoffset'] = $saved_avdataoffset;
		$this->getid3->info['avdataend']    = $saved_avdataend;
		$this->getid3->info['filesize']     = $saved_filesize;

// Exit string mode
		$this->data_string_flag = false;
	}

public function setStringMode($string) {
		$this->data_string_flag   = true;
		$this->data_string        = $string;
		$this->data_string_length = strlen($string);
	}

protected function ftell() {
		if ($this->data_string_flag) {
			return $this->data_string_position;
		}
		return ftell($this->getid3->fp);
	}

protected function fread($bytes) {
		if ($this->data_string_flag) {
			$this->data_string_position += $bytes;
			return substr($this->data_string, $this->data_string_position - $bytes, $bytes);
		}
		$pos = $this->ftell() + $bytes;
		if (!getid3_lib::intValueSupported($pos)) {
			throw new getid3_exception('cannot fread('.$bytes.' from '.$this->ftell().') because beyond PHP filesystem limit', 10);
		}

//return fread($this->getid3->fp, $bytes);
		/*
		* http://www.getid3.org/phpBB3/viewtopic.php?t=1930
		* "I found out that the root cause for the problem was how getID3 uses the PHP system function fread().
		* It seems to assume that fread() would always return as many bytes as were requested.
		* However, according the PHP manual (http://php.net/manual/en/function.fread.php), this is the case only with regular local files, but not e.g. with Linux pipes.
		* The call may return only part of the requested data and a new call is needed to get more."
		*/
		$contents = '';
		do {
			$part = fread($this->getid3->fp, $bytes);
			$partLength  = strlen($part);
			$bytes      -= $partLength;
			$contents   .= $part;
		} while (($bytes > 0) && ($partLength > 0));
		return $contents;
	}

protected function fseek($bytes, $whence=SEEK_SET) {
		if ($this->data_string_flag) {
			switch ($whence) {
				case SEEK_SET:
					$this->data_string_position = $bytes;
					break;

case SEEK_CUR:
					$this->data_string_position += $bytes;
					break;

case SEEK_END:
					$this->data_string_position = $this->data_string_length + $bytes;
					break;
			}
			return 0;
		} else {
			$pos = $bytes;
			if ($whence == SEEK_CUR) {
				$pos = $this->ftell() + $bytes;
			} elseif ($whence == SEEK_END) {
				$pos = $this->getid3->info['filesize'] + $bytes;
			}
			if (!getid3_lib::intValueSupported($pos)) {
				throw new getid3_exception('cannot fseek('.$pos.') because beyond PHP filesystem limit', 10);
			}
		}
		return fseek($this->getid3->fp, $bytes, $whence);
	}

protected function feof() {
		if ($this->data_string_flag) {
			return $this->data_string_position >= $this->data_string_length;
		}
		return feof($this->getid3->fp);
	}

final protected function isDependencyFor($module) {
		return $this->dependency_to == $module;
	}

protected function error($text) {
		$this->getid3->info['error'][] = $text;

return false;
	}

protected function warning($text) {
		return $this->getid3->warning($text);
	}

protected function notice($text) {
		// does nothing for now
	}

public function saveAttachment($name, $offset, $length, $image_mime=null) {
		try {

// do not extract at all
			if ($this->getid3->option_save_attachments === getID3::ATTACHMENTS_NONE) {

$attachment = null; // do not set any

// extract to return array
			} elseif ($this->getid3->option_save_attachments === getID3::ATTACHMENTS_INLINE) {

$this->fseek($offset);
				$attachment = $this->fread($length); // get whole data in one pass, till it is anyway stored in memory
				if ($attachment === false || strlen($attachment) != $length) {
					throw new Exception('failed to read attachment data');
				}

// assume directory path is given
			} else {

// set up destination path
				$dir = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->getid3->option_save_attachments), DIRECTORY_SEPARATOR);
				if (!is_dir($dir) || !getID3::is_writable($dir)) { // check supplied directory
					throw new Exception('supplied path ('.$dir.') does not exist, or is not writable');
				}
				$dest = $dir.DIRECTORY_SEPARATOR.$name.($image_mime ? '.'.getid3_lib::ImageExtFromMime($image_mime) : '');

// create dest file
				if (($fp_dest = fopen($dest, 'wb')) == false) {
					throw new Exception('failed to create file '.$dest);
				}

// copy data
				$this->fseek($offset);
				$buffersize = ($this->data_string_flag ? $length : $this->getid3->fread_buffer_size());
				$bytesleft = $length;
				while ($bytesleft > 0) {
					if (($buffer = $this->fread(min($buffersize, $bytesleft))) === false || ($byteswritten = fwrite($fp_dest, $buffer)) === false || ($byteswritten === 0)) {
						throw new Exception($buffer === false ? 'not enough data to read' : 'failed to write to destination file, may be not enough disk space');
					}
					$bytesleft -= $byteswritten;
				}

fclose($fp_dest);
				$attachment = $dest;

}

} catch (Exception $e) {

// close and remove dest file if created
			if (isset($fp_dest) && is_resource($fp_dest)) {
				fclose($fp_dest);
				unlink($dest);
			}

// do not set any is case of error
			$attachment = null;
			$this->warning('Failed to extract attachment '.$name.': '.$e->getMessage());

}

// seek to the end of attachment
		$this->fseek($offset + $length);

return $attachment;
	}

}

class getid3_exception extends Exception
{
	public $message;
}

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