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<?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 //
/////////////////////////////////////////////////////////////////
namespace ID3Parser\getID3;
class getID3 {
// public: Settings
private $encoding = 'UTF-8'; // CASE SENSITIVE! - i.e. (must be supported by iconv()). Examples: ISO-8859-1 UTF-8 UTF-16 UTF-16BE
// public: Read buffer size in bytes
private $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 $memory_limit = 0;
// Protected variables
protected $startup_error = '';
protected $startup_warning = '';
const FREAD_BUFFER_SIZE = 32768;
// public: constructor
public function __construct() {
// Check for PHP version
$required_php_version = '5.3.0';
if (version_compare(PHP_VERSION, $required_php_version, '<')) {
$this->startup_error .= 'getID3() requires PHP v'.$required_php_version.' or higher - you are running v'.PHP_VERSION;
return false;
}
// 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) {
$this->startup_error .= 'PHP has less than 4MB available memory and will very likely run out. Increase memory_limit in php.ini';
} elseif ($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';
}
return true;
}
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) {
try {
if (!empty($this->startup_error)) {
throw new getid3_exception($this->startup_error);
}
if (!empty($this->startup_warning)) {
$this->warning($this->startup_warning);
}
// init result array and set parameters
$this->filename = $filename;
$this->info = array();
// 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('#(.+)'.preg_quote(DIRECTORY_SEPARATOR).'{2,}#U', '\1'.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).')');
}
$this->info['filesize'] = filesize($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
return true;
} catch (\Exception $e) {
$this->error($e->getMessage());
}
return false;
}
// public: analyze file
public function analyze($filename) {
try {
if (!$this->openfile($filename)) {
return $this->info;
}
// Handle tags
foreach (array('id3v2'=>'id3v2', 'id3v1'=>'id3v1') as $tag_name => $tag_key) {
$option_tag = 'option_tag_'.$tag_name;
if ($option_tag) {
try {
$tag_class = '\ID3Parser\getID3\Tags\getid3_'.$tag_name;
/** @var Tags\getid3_id3v2|Tags\getid3_id3v2 $tag */
$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']);
}
}
} 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;
}
}
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