mbirth/php-mp3info
1
0
Fork 0
Code Issues Pull Requests Activity

Fix incorrect VBR-file duration (depending on quality) and add Cover extraction

Browse Source
This commit is contained in:
wapmorgan 2021-08-11 21:21:54 +03:00
parent 5f7d54fa69
commit ee86090f0a
2 changed files with 174 additions and 112 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
bin/mp3scan Normal file → Executable file
View File

@ -162,7 +162,21 @@ class Mp3InfoConsoleRunner {
}
if ($verbose) {
print_r(get_object_vars($audio));
print_r(array_intersect_key(get_object_vars($audio), array_flip([
'codecVersion',
'layerVersion',
'duration',
'bitRate',
'sampleRate',
'isVbr',
'hasCover',
'channel',
'tags',
'tags1',
'tags2',
'id3v2MajorVersion',
'id3v2MinorVersion',
])));
}
$this->totalDuration += $audio->duration;

270
src/Mp3Info.php
View File

@ -78,51 +78,55 @@ class Mp3Info {
public static $headerSeekLimit = 2048;
/**
* MPEG codec version (1 or 2 or 2.5 or undefined)
* @var int
* @var int MPEG codec version (1 or 2 or 2.5 or undefined)
*/
public $codecVersion;
/**
* Audio layer version (1 or 2 or 3)
* @var int
* @var int Audio layer version (1 or 2 or 3)
*/
public $layerVersion;
/**
* Audio size in bytes. Note that this value is NOT equals file size.
* @var int
* @var int Audio size in bytes. Note that this value is NOT equals file size.
*/
public $audioSize;
/**
* Audio duration in seconds.microseconds (e.g. 3603.0171428571)
* @var float
* @var float Audio duration in seconds.microseconds (e.g. 3603.0171428571)
*/
public $duration;
/**
* Audio bit rate in bps (e.g. 128000)
* @var int Audio bit rate in bps (e.g. 128000)
*/
public $bitRate;
/**
* Audio sample rate in Hz (e.g. 44100)
* @var int
* @var int Audio sample rate in Hz (e.g. 44100)
*/
public $sampleRate;
/**
* Contains true if audio has variable bit rate
* @var boolean
* @var boolean Contains true if audio has variable bit rate
*/
public $isVbr = false;
/**
* Contains VBR properties
* @var array
* @var boolean Contains true if audio has cover
*/
public $hasCover = false;
/**
* @var array Contains VBR properties
*/
public $vbrProperties = [];
/**
* @var array Contains picture properties
*/
public $coverProperties = [];
/**
* Channel mode (stereo or dual_mono or joint_stereo or mono)
* @var string
@ -135,67 +139,57 @@ class Mp3Info {
public $tags = [];
/**
* Audio tags ver. 1 (aka id3v1)
* @var array
* @var array Audio tags ver. 1 (aka id3v1)
*/
public $tags1 = [];
/**
* Audio tags ver. 2 (aka id3v2)
* @var array
* @var array Audio tags ver. 2 (aka id3v2)
*/
public $tags2 = [];
/**
* Major version of id3v2 tag (if id3v2 present) (2 or 3 or 4)
* @var int
* @var int Major version of id3v2 tag (if id3v2 present) (2 or 3 or 4)
*/
public $id3v2MajorVersion;
/**
* Minor version of id3v2 tag (if id3v2 present)
* @var int
* @var int Minor version of id3v2 tag (if id3v2 present)
*/
public $id3v2MinorVersion;
/**
* List of id3v2 header flags (if id3v2 present)
* @var array
* @var array List of id3v2 header flags (if id3v2 present)
*/
public $id3v2Flags = [];
/**
* List of id3v2 tags flags (if id3v2 present)
* @var array
* @var array List of id3v2 tags flags (if id3v2 present)
*/
public $id3v2TagsFlags = [];
/**
* Contains audio file name
* @var string
* @var string Contains audio file name
*/
public $_fileName;
/**
* Contains file size
* @var int
* @var int Contains file size
*/
public $_fileSize;
/**
* Number of audio frames in file
* @var int
* @var int Number of audio frames in file
*/
public $_framesCount = 0;
/**
* Contains time spent to read&extract audio information.
* @var float
* @var float Contains time spent to read&extract audio information.
*/
public $_parsingTime;
/**
* Calculated frame size for Constant Bit Rate
* @var int
* @var int Calculated frame size for Constant Bit Rate
*/
private $_cbrFrameSize;
@ -225,6 +219,22 @@ class Mp3Info {
$this->audioSize = $this->parseAudio($this->_fileName = $filename, $this->_fileSize = filesize($filename), $mode);
}
/**
* @return bool|null
*/
public function getCover()
{
if (empty($this->coverProperties)) {
return null;
}
$fp = fopen($this->_fileName, 'rb');
fseek($fp, $this->coverProperties['offset']);
$data = fread($fp, $this->coverProperties['size']);
fclose($fp);
return $data;
}
/**
* Reads audio file in binary mode.
* mpeg audio file structure:
@ -274,7 +284,7 @@ class Mp3Info {
if ($mode & self::META) {
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 the future.
* @link https://github.com/wapmorgan/Mp3Info/issues/13#issuecomment-447470813
*/
$framesCount = $this->readMpegFrame($fp);
@ -292,9 +302,10 @@ class Mp3Info {
// The faster way to detect audio duration:
$samples_in_second = $this->layerVersion == 1 ? self::LAYER_1_FRAME_SIZE : self::LAYERS_23_FRAME_SIZE;
// for VBR: adjust samples in second according to VBR quality
if ($this->isVbr && isset($this->vbrProperties['quality'])) {
$samples_in_second = floor($samples_in_second * $this->vbrProperties['quality'] / 100);
}
// disabled for now
// if ($this->isVbr && isset($this->vbrProperties['quality'])) {
// $samples_in_second = floor($samples_in_second * $this->vbrProperties['quality'] / 100);
// }
// Calculate total number of audio samples (framesCount * sampleInFrameCount) / samplesInSecondCount
$this->duration = ($this->_framesCount - 1) * $samples_in_second / $this->sampleRate;
}
@ -535,7 +546,7 @@ class Mp3Info {
* Parses id3v2.3.0 tag body.
* @todo Complete.
*/
private function parseId3v23Body($fp, $lastByte) {
protected function parseId3v23Body($fp, $lastByte) {
while (ftell($fp) < $lastByte) {
$raw = fread($fp, 10);
$frame_id = substr($raw, 0, 4);
@ -571,41 +582,40 @@ class Mp3Info {
case 'TRCK': # Track number/Position in set
case 'TIT2': # Title/songname/content description
case 'TPE1': # Lead performer(s)/Soloist(s)
case 'TBPM': # BPM (beats per minute)
case 'TCOM': # Composer
case 'TCOP': # Copyright message
case 'TDAT': # Date
case 'TDLY': # Playlist delay
case 'TENC': # Encoded by
case 'TEXT': # Lyricist/Text writer
case 'TFLT': # File type
case 'TIME': # Time
case 'TIT1': # Content group description
case 'TIT3': # Subtitle/Description refinement
case 'TKEY': # Initial key
case 'TLAN': # Language(s)
case 'TLEN': # Length
case 'TMED': # Media type
case 'TOAL': # Original album/movie/show title
case 'TOFN': # Original filename
case 'TOLY': # Original lyricist(s)/text writer(s)
case 'TOPE': # Original artist(s)/performer(s)
case 'TORY': # Original release year
case 'TOWN': # File owner/licensee
case 'TPE2': # Band/orchestra/accompaniment
case 'TPE3': # Conductor/performer refinement
case 'TPE4': # Interpreted, remixed, or otherwise modified by
case 'TPOS': # Part of a set
case 'TPUB': # Publisher
case 'TRDA': # Recording dates
case 'TRSN': # Internet radio station name
case 'TRSO': # Internet radio station owner
case 'TSIZ': # Size
case 'TSRC': # ISRC (international standard recording code)
case 'TSSE': # Software/Hardware and settings used for encoding
$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, fread($fp, $frame_size));
break;
// case 'TBPM': # BPM (beats per minute)
// case 'TCOM': # Composer
// case 'TCOP': # Copyright message
// case 'TDAT': # Date
// case 'TDLY': # Playlist delay
// case 'TENC': # Encoded by
// case 'TEXT': # Lyricist/Text writer
// case 'TFLT': # File type
// case 'TIME': # Time
// case 'TIT1': # Content group description
// case 'TIT3': # Subtitle/Description refinement
// case 'TKEY': # Initial key
// case 'TLAN': # Language(s)
// case 'TLEN': # Length
// case 'TMED': # Media type
// case 'TOAL': # Original album/movie/show title
// case 'TOFN': # Original filename
// case 'TOLY': # Original lyricist(s)/text writer(s)
// case 'TOPE': # Original artist(s)/performer(s)
// case 'TORY': # Original release year
// case 'TOWN': # File owner/licensee
// case 'TPE2': # Band/orchestra/accompaniment
// case 'TPE3': # Conductor/performer refinement
// case 'TPE4': # Interpreted, remixed, or otherwise modified by
// case 'TPOS': # Part of a set
// case 'TPUB': # Publisher
// case 'TRDA': # Recording dates
// case 'TRSN': # Internet radio station name
// case 'TRSO': # Internet radio station owner
// case 'TSIZ': # Size
// case 'TSRC': # ISRC (international standard recording code)
// case 'TSSE': # Software/Hardware and settings used for encoding
################# Text information frames
################# URL link frames
@ -680,8 +690,18 @@ class Mp3Info {
// break;
// case 'RVRB': # Reverb
// break;
// case 'APIC': # Attached picture
// break;
case 'APIC': # Attached picture
$this->hasCover = true;
$last_byte = ftell($fp) + $frame_size;
$this->coverProperties = ['text_encoding' => ord(fread($fp, 1))];
// fseek($fp, $frame_size - 4, SEEK_CUR);
$this->coverProperties['mime_type'] = $this->readTextUntilNull($fp, $last_byte);
$this->coverProperties['picture_type'] = ord(fread($fp, 1));
$this->coverProperties['description'] = $this->readTextUntilNull($fp, $last_byte);
$this->coverProperties['offset'] = ftell($fp);
$this->coverProperties['size'] = $last_byte - ftell($fp);
fseek($fp, $last_byte);
break;
// case 'GEOB': # General encapsulated object
// break;
case 'PCNT': # Play counter
@ -761,40 +781,40 @@ class Mp3Info {
case 'TRCK': # Track number/Position in set
case 'TIT2': # Title/songname/content description
case 'TPE1': # Lead performer(s)/Soloist(s)
case 'TBPM': # BPM (beats per minute)
case 'TCOM': # Composer
case 'TCOP': # Copyright message
case 'TDAT': # Date
case 'TDLY': # Playlist delay
case 'TENC': # Encoded by
case 'TEXT': # Lyricist/Text writer
case 'TFLT': # File type
case 'TIME': # Time
case 'TIT1': # Content group description
case 'TIT3': # Subtitle/Description refinement
case 'TKEY': # Initial key
case 'TLAN': # Language(s)
case 'TLEN': # Length
case 'TMED': # Media type
case 'TOAL': # Original album/movie/show title
case 'TOFN': # Original filename
case 'TOLY': # Original lyricist(s)/text writer(s)
case 'TOPE': # Original artist(s)/performer(s)
case 'TORY': # Original release year
case 'TOWN': # File owner/licensee
case 'TPE2': # Band/orchestra/accompaniment
case 'TPE3': # Conductor/performer refinement
case 'TPE4': # Interpreted, remixed, or otherwise modified by
case 'TPOS': # Part of a set
case 'TPUB': # Publisher
case 'TRDA': # Recording dates
case 'TRSN': # Internet radio station name
case 'TRSO': # Internet radio station owner
case 'TSIZ': # Size
case 'TSRC': # ISRC (international standard recording code)
case 'TSSE': # Software/Hardware and settings used for encoding
$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, fread($fp, $frame_size));
break;
// case 'TBPM': # BPM (beats per minute)
// case 'TCOM': # Composer
// case 'TCOP': # Copyright message
// case 'TDAT': # Date
// case 'TDLY': # Playlist delay
// case 'TENC': # Encoded by
// case 'TEXT': # Lyricist/Text writer
// case 'TFLT': # File type
// case 'TIME': # Time
// case 'TIT1': # Content group description
// case 'TIT3': # Subtitle/Description refinement
// case 'TKEY': # Initial key
// case 'TLAN': # Language(s)
// case 'TLEN': # Length
// case 'TMED': # Media type
// case 'TOAL': # Original album/movie/show title
// case 'TOFN': # Original filename
// case 'TOLY': # Original lyricist(s)/text writer(s)
// case 'TOPE': # Original artist(s)/performer(s)
// case 'TORY': # Original release year
// case 'TOWN': # File owner/licensee
// case 'TPE2': # Band/orchestra/accompaniment
// case 'TPE3': # Conductor/performer refinement
// case 'TPE4': # Interpreted, remixed, or otherwise modified by
// case 'TPOS': # Part of a set
// case 'TPUB': # Publisher
// case 'TRDA': # Recording dates
// case 'TRSN': # Internet radio station name
// case 'TRSO': # Internet radio station owner
// case 'TSIZ': # Size
// case 'TSRC': # ISRC (international standard recording code)
// case 'TSSE': # Software/Hardware and settings used for encoding
################# Text information frames
@ -870,8 +890,18 @@ class Mp3Info {
// break;
// case 'RVRB': # Reverb
// break;
// case 'APIC': # Attached picture
// break;
case 'APIC': # Attached picture
$this->hasCover = true;
$last_byte = ftell($fp) + $frame_size;
$this->coverProperties = ['text_encoding' => ord(fread($fp, 1))];
// fseek($fp, $frame_size - 4, SEEK_CUR);
$this->coverProperties['mime_type'] = $this->readTextUntilNull($fp, $last_byte);
$this->coverProperties['picture_type'] = ord(fread($fp, 1));
$this->coverProperties['description'] = $this->readTextUntilNull($fp, $last_byte);
$this->coverProperties['offset'] = ftell($fp);
$this->coverProperties['size'] = $last_byte - ftell($fp);
fseek($fp, $last_byte);
break;
// case 'GEOB': # General encapsulated object
// break;
case 'PCNT': # Play counter
@ -958,6 +988,24 @@ class Mp3Info {
}
}
/**
* @param resource $fp
* @param int $dataEnd
* @return string|null
*/
private function readTextUntilNull($fp, $dataEnd)
{
$text = null;
while (ftell($fp) < $dataEnd) {
$char = fgetc($fp);
if ($char === "\00") {
return $text;
}
$text .= $char;
}
return $text;
}
/**
* Fills `tags` property with values id3v2 and id3v1 tags.
*/