mbirth/php-mp3info
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Add $tags list with combined tags. Improve isValidAudio()

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This commit is contained in:
wapmorgan 2019-12-03 03:27:00 +03:00
parent 9049767016
commit d21f67a9e0
2 changed files with 74 additions and 48 deletions
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7
bin/mp3scan
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@ -147,13 +147,8 @@ class Mp3InfoConsoleRunner {
.PHP_EOL; .PHP_EOL;
if ($id3v2 && !empty($audio->tags2)) { if ($id3v2 && !empty($audio->tags2)) {
foreach ($audio->tags2 as $tag=>$value) { foreach ($audio->tags as $tag => $value) {
echo ' '.$tag.': '; echo ' '.$tag.': ';
if ($tag == 'COMM') {
foreach ($value as $lang => $comment) {
echo '['.$lang.'] '.$comment['short'].'; '.$comment['actual'].PHP_EOL;
}
} else
echo self::convertToNativeEncoding($value).PHP_EOL; echo self::convertToNativeEncoding($value).PHP_EOL;
} }
} }

115
src/Mp3Info.php
View File

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