Add $tags list with combined tags. Improve isValidAudio()
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wapmorgan
parent
9049767016
commit
d21f67a9e0
@ -147,13 +147,8 @@ class Mp3InfoConsoleRunner {
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.PHP_EOL;
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if ($id3v2 && !empty($audio->tags2)) {
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foreach ($audio->tags2 as $tag=>$value) {
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foreach ($audio->tags as $tag => $value) {
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echo ' '.$tag.': ';
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if ($tag == 'COMM') {
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foreach ($value as $lang => $comment) {
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echo '['.$lang.'] '.$comment['short'].'; '.$comment['actual'].PHP_EOL;
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}
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} else
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echo self::convertToNativeEncoding($value).PHP_EOL;
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}
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}
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115
src/Mp3Info.php
115
src/Mp3Info.php
@ -84,18 +84,6 @@ class Mp3Info {
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*/
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public $audioSize;
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/**
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* Contains audio file name
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* @var string
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*/
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public $_fileName;
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/**
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* Contains file size
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* @var int
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*/
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public $_fileSize;
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/**
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* Audio duration in seconds.microseconds (e.g. 3603.0171428571)
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* @var float
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@ -132,10 +120,9 @@ class Mp3Info {
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public $channel;
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/**
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* Number of audio frames in file
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* @var int
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* @var array Unified list of tags (id3v1 and id3v2 united)
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*/
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public $framesCount = 0;
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public $tags = [];
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/**
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* Audio tags ver. 1 (aka id3v1)
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@ -149,16 +136,12 @@ class Mp3Info {
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*/
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public $tags2 = [];
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/**
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* @var int|null Size of id3-block
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*/
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public $id3Size;
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/**
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* Major version of id3v2 tag (if id3v2 present) (2 or 3 or 4)
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* @var int
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*/
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public $id3v2MajorVersion;
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/**
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* Minor version of id3v2 tag (if id3v2 present)
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* @var int
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@ -177,6 +160,23 @@ class Mp3Info {
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*/
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public $id3v2TagsFlags = [];
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/**
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* Contains audio file name
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* @var string
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*/
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public $_fileName;
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/**
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* Contains file size
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* @var int
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*/
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public $_fileSize;
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/**
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* Number of audio frames in file
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* @var int
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*/
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public $_framesCount = 0;
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/**
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* Contains time spent to read&extract audio information.
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* @var float
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@ -187,13 +187,12 @@ class Mp3Info {
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* Calculated frame size for Constant Bit Rate
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* @var int
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*/
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private $__cbrFrameSize;
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private $_cbrFrameSize;
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/**
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* Frame size for Variable Bit Rate
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* @var int
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* @var int|null Size of id3v2-data
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*/
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private $__vbrFrameSize;
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public $_id3Size;
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/**
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* $mode is self::META, self::TAGS or their combination.
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@ -232,13 +231,12 @@ class Mp3Info {
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$time = microtime(true);
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$fp = fopen($filename, 'rb');
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/** Size of audio data (exclude tags size)
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* @var int */
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/** @var int Size of audio data (exclude tags size) */
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$audioSize = $fileSize;
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// parse tags
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if (fread($fp, 3) == self::TAG2_SYNC) {
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if ($mode & self::TAGS) $audioSize -= ($this->id3Size = $this->readId3v2Body($fp));
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if ($mode & self::TAGS) $audioSize -= ($this->_id3Size = $this->readId3v2Body($fp));
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else {
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fseek($fp, 2, SEEK_CUR); // 2 bytes of tag version
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fseek($fp, 1, SEEK_CUR); // 1 byte of tag flags
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@ -247,7 +245,7 @@ class Mp3Info {
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$value = substr(str_pad(base_convert($value, 10, 2), 8, 0, STR_PAD_LEFT), 1);
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});
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$size = bindec(implode(null, $sizeBytes)) + 10;
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$audioSize -= ($this->id3Size = $size);
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$audioSize -= ($this->_id3Size = $size);
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}
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}
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@ -257,24 +255,28 @@ class Mp3Info {
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else $audioSize -= 128;
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}
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if ($mode & self::TAGS) {
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$this->fillTags();
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}
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fseek($fp, 0);
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// audio meta
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if ($mode & self::META) {
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if ($this->id3Size !== null) fseek($fp, $this->id3Size);
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if ($this->_id3Size !== null) fseek($fp, $this->_id3Size);
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/**
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* First frame can lie. Need to fix in future.
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* @link https://github.com/wapmorgan/Mp3Info/issues/13#issuecomment-447470813
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*/
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$framesCount = $this->readMpegFrame($fp);
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$this->framesCount = $framesCount !== null
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$this->_framesCount = $framesCount !== null
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? $framesCount
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: ceil($audioSize / $this->__cbrFrameSize);
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: ceil($audioSize / $this->_cbrFrameSize);
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// recalculate average bit rate in vbr case
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if ($this->isVbr && !is_null($framesCount)) {
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if ($this->isVbr && $framesCount !== null) {
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$avgFrameSize = $audioSize / $framesCount;
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$this->bitRate = $avgFrameSize * $this->sampleRate / (1000 * $this->layerVersion == 3 ? 12 : 144);
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$this->bitRate = $avgFrameSize * $this->sampleRate / (1000 * $this->layerVersion == self::LAYER_3 ? 12 : 144);
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}
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// The faster way to detect audio duration:
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@ -284,7 +286,7 @@ class Mp3Info {
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$samples_in_second = floor($samples_in_second * $this->vbrProperties['quality'] / 100);
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}
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// Calculate total number of audio samples (framesCount * sampleInFrameCount) / samplesInSecondCount
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$this->duration = ($this->framesCount - 1) * $samples_in_second / $this->sampleRate;
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$this->duration = ($this->_framesCount - 1) * $samples_in_second / $this->sampleRate;
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}
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fclose($fp);
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@ -369,12 +371,12 @@ class Mp3Info {
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// go to the end of frame
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if ($this->layerVersion == self::LAYER_1) {
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$this->__cbrFrameSize = floor((12 * $this->bitRate / $this->sampleRate + ($header_bytes[2] >> 1 & 0b1)) * 4);
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$this->_cbrFrameSize = floor((12 * $this->bitRate / $this->sampleRate + ($header_bytes[2] >> 1 & 0b1)) * 4);
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} else {
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$this->__cbrFrameSize = floor(144 * $this->bitRate / $this->sampleRate + ($header_bytes[2] >> 1 & 0b1));
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$this->_cbrFrameSize = floor(144 * $this->bitRate / $this->sampleRate + ($header_bytes[2] >> 1 & 0b1));
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}
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fseek($fp, $pos + $this->__cbrFrameSize);
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fseek($fp, $pos + $this->_cbrFrameSize);
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return isset($this->vbrProperties['frames']) ? $this->vbrProperties['frames'] : null;
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}
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@ -693,19 +695,25 @@ class Mp3Info {
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/**
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* Simple function that checks mpeg-audio correctness of given file.
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* Actually it checks that first 3 bytes of file is a id3v2 tag mark or
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* that first 11 bits of file is a frame header sync mark. To perform full
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* test create an instance of Mp3Info with given file.
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* that first 11 bits of file is a frame header sync mark or that 3 bytes on -128 position of file is id3v1 tag.
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* To perform full test create an instance of Mp3Info with given file.
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*
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* @param string $filename File to be tested.
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*
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* @return boolean True if file is looks correct, False otherwise.
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* @return boolean True if file looks that correct mpeg audio, False otherwise.
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* @throws \Exception
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*/
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public static function isValidAudio($filename) {
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if (!file_exists($filename))
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throw new Exception('File '.$filename.' is not present!');
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$raw = file_get_contents($filename, false, null, 0, 3);
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return ($raw == self::TAG2_SYNC || (self::FRAME_SYNC == (unpack('n*', $raw)[1] & self::FRAME_SYNC)));
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return $raw == self::TAG2_SYNC // id3v2 tag
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|| (self::FRAME_SYNC == (unpack('n*', $raw)[1] & self::FRAME_SYNC)) // mpeg header tag
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|| (
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filesize($filename) > 128
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&& file_get_contents($filename, false, null, -128, 3) === self::TAG1_SYNC
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) // id3v1 tag
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;
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}
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/**
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@ -723,4 +731,27 @@ class Mp3Info {
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else # utf-16
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return mb_convert_encoding($data['information']."\00", 'utf-8', 'utf-16');
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}
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/**
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* Fills `tags` property with values id3v2 and id3v1 tags.
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*/
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protected function fillTags()
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{
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foreach ([
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'song' => 'TIT2',
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'artist' => 'TPE1',
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'album' => 'TALB',
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'year' => 'TYER',
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'comment' => 'COMM',
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'track' => 'TRCK',
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'genre' => 'TCON',
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] as $tag => $id3v2_tag) {
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if (!isset($this->tags2[$id3v2_tag]) && (!isset($this->tags1[$tag]) || empty($this->tags1[$tag])))
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continue;
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$this->tags[$tag] = isset($this->tags2[$id3v2_tag])
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? ($id3v2_tag === 'COMM' ? current($this->tags2[$id3v2_tag])['actual'] : $this->tags2[$id3v2_tag])
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: $this->tags1[$tag];
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}
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}
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}
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