Simple update
This commit is contained in:
wapmorgan
140
src/Mp3Info.php
140
src/Mp3Info.php
@ -1,6 +1,8 @@
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<?php
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namespace wapmorgan\Mp3Info;
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use Exception;
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/**
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* This class extracts information about an mpeg audio. (supported mpeg versions: MPEG-1, MPEG-2)
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* (supported mpeg audio layers: 1, 2, 3).
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@ -20,10 +22,12 @@ namespace wapmorgan\Mp3Info;
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* * {@link http://gabriel.mp3-tech.org/mp3infotag.html Xing, Info and Lame tags specifications}
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*/
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class Mp3Info {
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const TAG1_SYNC = "TAG";
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const TAG2_SYNC = "ID3";
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const VBR_SYNC = "Xing";
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const CBR_SYNC = "Info";
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const TAG1_SYNC = 'TAG';
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const TAG2_SYNC = 'ID3';
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const VBR_SYNC = 'Xing';
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const CBR_SYNC = 'Info';
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const FRAME_SYNC = 0xffe0;
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const META = 1;
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const TAGS = 2;
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@ -35,10 +39,10 @@ class Mp3Info {
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const LAYER_2 = 2;
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const LAYER_3 = 3;
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const STEREO = "stereo";
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const JOINT_STEREO = "joint_stereo";
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const DUAL_MONO = "dual_mono";
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const MONO = "mono";
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const STEREO = 'stereo';
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const JOINT_STEREO = 'joint_stereo';
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const DUAL_MONO = 'dual_mono';
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const MONO = 'mono';
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/**
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* Boolean trigger to enable / disable trace output
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@ -157,11 +161,17 @@ class Mp3Info {
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/**
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* $mode is self::META, self::TAGS or their combination.
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*
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* @param string $filename
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* @param bool $parseTags
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*
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* @throws \Exception
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*/
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public function __construct($filename, $parseTags = false) {
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if (is_null(self::$_bitRateTable)) self::$_bitRateTable = require dirname(__FILE__).'/../data/bitRateTable.php';
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if (is_null(self::$_sampleRateTable)) self::$_sampleRateTable = require dirname(__FILE__).'/../data/sampleRateTable.php';
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if (self::$_bitRateTable === null)
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self::$_bitRateTable = require dirname(__FILE__).'/../data/bitRateTable.php';
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if (self::$_sampleRateTable === null)
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self::$_sampleRateTable = require dirname(__FILE__).'/../data/sampleRateTable.php';
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if (!file_exists($filename))
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throw new \Exception("File ".$filename." is not present!");
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@ -183,7 +193,7 @@ class Mp3Info {
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*/
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private function parseAudio($filename, $fileSize, $mode) {
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$time = microtime(true);
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$fp = fopen($filename, "rb");
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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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@ -278,10 +288,10 @@ class Mp3Info {
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}
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switch ($this->codecVersion.($this->channel == self::MONO ? 'mono' : 'stereo')) {
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case "1stereo": $offset = 36; break;
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case "1mono": $offset = 21; break;
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case "2stereo": $offset = 21; break;
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case "2mono": $offset = 13; break;
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case '1stereo': $offset = 36; break;
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case '1mono': $offset = 21; break;
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case '2stereo': $offset = 21; break;
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case '2mono': $offset = 13; break;
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}
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fseek($fp, $pos + $offset);
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if (fread($fp, 4) == self::VBR_SYNC) {
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@ -379,7 +389,7 @@ class Mp3Info {
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private function readId3v2Body($fp) {
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// read the rest of the id3v2 header
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$raw = fread($fp, 7);
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$data = unpack("cmajor_version/cminor_version/H*", $raw);
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$data = unpack('cmajor_version/cminor_version/H*', $raw);
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$this->id3v2MajorVersion = $data['major_version'];
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$this->id3v2MinorVersion = $data['minor_version'];
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$data = str_pad(base_convert($data[1], 16, 2), 40, 0, STR_PAD_LEFT);
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@ -436,7 +446,7 @@ class Mp3Info {
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break;
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}
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$data = unpack("Nframe_size/H2flags", substr($raw, 4));
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$data = unpack('Nframe_size/H2flags', substr($raw, 4));
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$frame_size = $data['frame_size'];
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$flags = base_convert($data['flags'], 16, 2);
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$this->id3v2TagsFlags[$frame_id] = array(
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@ -455,24 +465,16 @@ class Mp3Info {
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################# Text information frames
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case 'TALB': # Album/Movie/Show title
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$raw = fread($fp, $frame_size);
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// var_dump($raw);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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case 'TCON': # Content type
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case 'TYER': # Year
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case 'TXXX': # User defined text information frame
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case 'TRCK': # Track number/Position in set
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case 'TIT2': # Title/songname/content description
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case 'TPE1': # Lead performer(s)/Soloist(s)
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$this->tags2[$frame_id] = $this->handleTextFrame($frame_size, fread($fp, $frame_size));
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break;
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// case 'TBPM': # BPM (beats per minute)
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// case 'TCOM': # Composer
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case 'TCON': # Content type
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$raw = fread($fp, $frame_size);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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break;
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// case 'TCOP': # Copyright message
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// case 'TDAT': # Date
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// case 'TDLY': # Playlist delay
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@ -481,14 +483,6 @@ class Mp3Info {
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// case 'TFLT': # File type
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// case 'TIME': # Time
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// case 'TIT1': # Content group description
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case 'TIT2': # Title/songname/content description
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$raw = fread($fp, $frame_size);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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break;
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// case 'TIT3': # Subtitle/Description refinement
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// case 'TKEY': # Initial key
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// case 'TLAN': # Language(s)
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@ -500,49 +494,18 @@ class Mp3Info {
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// case 'TOPE': # Original artist(s)/performer(s)
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// case 'TORY': # Original release year
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// case 'TOWN': # File owner/licensee
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case 'TPE1': # Lead performer(s)/Soloist(s)
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$raw = fread($fp, $frame_size);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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break;
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// case 'TPE2': # Band/orchestra/accompaniment
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// case 'TPE3': # Conductor/performer refinement
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// case 'TPE4': # Interpreted, remixed, or otherwise modified by
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// case 'TPOS': # Part of a set
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// case 'TPUB': # Publisher
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case 'TRCK': # Track number/Position in set
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$raw = fread($fp, $frame_size);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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break;
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// case 'TRDA': # Recording dates
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// case 'TRSN': # Internet radio station name
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// case 'TRSO': # Internet radio station owner
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// case 'TSIZ': # Size
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// case 'TSRC': # ISRC (international standard recording code)
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// case 'TSSE': # Software/Hardware and settings used for encoding
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case 'TYER': # Year
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$raw = fread($fp, $frame_size);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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break;
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case 'TXXX': # User defined text information frame
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$raw = fread($fp, $frame_size);
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$data = unpack("C1encoding/A".($frame_size - 1)."information", $raw);
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if ((bool)($data['encoding'] == 0x00)) # ISO-8859-1
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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$this->tags2[$frame_id] = mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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break;
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################# Text information frames
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################# URL link frames
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@ -583,7 +546,7 @@ class Mp3Info {
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case 'COMM': # Comments
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$dataEnd = ftell($fp) + $frame_size;
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$raw = fread($fp, 4);
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$data = unpack("C1encoding/A3language", $raw);
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$data = unpack('C1encoding/A3language', $raw);
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// read until \null character
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$short_description = null;
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$last_null = false;
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@ -622,8 +585,7 @@ class Mp3Info {
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// case 'GEOB': # General encapsulated object
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// break;
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case 'PCNT': # Play counter
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$raw = fread($fp, $frame_size);
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$data = unpack("L", $raw);
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$data = unpack('L', fread($fp, $frame_size));
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$this->tags2[$frame_id] = $data[1];
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break;
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// case 'POPM': # Popularimeter
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@ -657,15 +619,35 @@ 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 that first 11 bits of file is a frame header sync mark.
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* To perform full test create an instance of Mp3Info with 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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*
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* @param string $filename File to be tested.
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*
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* @return boolean True if file is looks correct, False otherwise.
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* @throws \Exception
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*/
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static public function isValidAudio($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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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 || substr(base_convert(implode(null, unpack('H*', $raw)), 16, 2), 0, 11) == self::FRAME_SYNC);
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return ($raw == self::TAG2_SYNC || (self::FRAME_SYNC == (unpack('n*', $raw)[1] & self::FRAME_SYNC)));
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}
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/**
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* @param $frameSize
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* @param $raw
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*
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* @return array
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*/
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private function handleTextFrame($frameSize, $raw)
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{
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$data = unpack('C1encoding/A' . ($frameSize - 1) . 'information', $raw);
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if ($data['encoding'] == 0x00) # ISO-8859-1
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return mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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else # utf-16
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return mb_convert_encoding($data['information'], 'utf-8', 'utf-16');
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}
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}
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