Implement id3v2.4.x reading
This commit is contained in:
wapmorgan
parent
0dc3d62d15
commit
7b524fabfe
244
src/Mp3Info.php
244
src/Mp3Info.php
@ -2,6 +2,7 @@
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namespace wapmorgan\Mp3Info;
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use Exception;
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use RuntimeException;
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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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@ -471,7 +472,8 @@ class Mp3Info {
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* @return int Returns length of id3v2 tag.
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* @throws \Exception
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*/
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private function readId3v2Body($fp) {
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private function readId3v2Body($fp)
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{
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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*', $raw);
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@ -493,26 +495,38 @@ class Mp3Info {
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if ($this->id3v2Flags['extended_header'])
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throw new \Exception('NEED TO PARSE EXTENDED HEADER!');
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} else if ($this->id3v2MajorVersion == 4) { // parse id3v2.4.0 header flags
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/*throw new \Exception('NEED TO PARSE id3v2.4.0 header flags!');*/
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{}
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$this->id3v2Flags = array(
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'unsynchronisation' => (bool)substr($flags, 0, 1),
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'extended_header' => (bool)substr($flags, 1, 1),
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'experimental_indicator' => (bool)substr($flags, 2, 1),
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'footer_present' => (bool)substr($flags, 3, 1),
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);
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if ($this->id3v2Flags['extended_header'])
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throw new \Exception('NEED TO PARSE EXTENDED HEADER!');
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if ($this->id3v2Flags['footer_present'])
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throw new \Exception('NEED TO PARSE id3v2.4 FOOTER!');
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}
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$size = substr($data, 8, 32);
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// some fucking shit
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// getting only 7 of 8 bits of size bytes
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$sizes = str_split($size, 8);
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array_walk($sizes, function (&$value) { $value = substr($value, 1);});
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array_walk($sizes, function (&$value) {
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$value = substr($value, 1);
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});
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$size = implode("", $sizes);
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$size = bindec($size);
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if ($this->id3v2MajorVersion == 2) // parse id3v2.2.0 body
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if ($this->id3v2MajorVersion == 2) {
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// parse id3v2.2.0 body
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/*throw new \Exception('NEED TO PARSE id3v2.2.0 flags!');*/
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{}
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else if ($this->id3v2MajorVersion == 3) // parse id3v2.3.0 body
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} else if ($this->id3v2MajorVersion == 3) {
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// parse id3v2.3.0 body
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$this->parseId3v23Body($fp, 10 + $size);
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else if ($this->id3v2MajorVersion == 4) // parse id3v2.4.0 body
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/*throw new \Exception('NEED TO PARSE id3v2.4.0 flags!');*/
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{}
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} else if ($this->id3v2MajorVersion == 4) {
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// parse id3v2.4.0 body
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$this->parseId3v24Body($fp, 10 + $size);
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}
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return 10 + $size; // 10 bytes - header, rest - body
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}
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@ -544,6 +558,197 @@ class Mp3Info {
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'grouping_identity' => (bool)substr($flags, 10, 1),
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),
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);
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switch ($frame_id) {
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// case 'UFID': # Unique file identifier
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// break;
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################# Text information frames
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case 'TALB': # Album/Movie/Show title
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case 'TCON': # Content type
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case 'TYER': # Year
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case 'TXXX': # User defined text information frame
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case 'TRCK': # Track number/Position in set
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case 'TIT2': # Title/songname/content description
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case 'TPE1': # Lead performer(s)/Soloist(s)
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$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 'TCOP': # Copyright message
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// case 'TDAT': # Date
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// case 'TDLY': # Playlist delay
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// case 'TENC': # Encoded by
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// case 'TEXT': # Lyricist/Text writer
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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 'TIT3': # Subtitle/Description refinement
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// case 'TKEY': # Initial key
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// case 'TLAN': # Language(s)
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// case 'TLEN': # Length
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// case 'TMED': # Media type
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// case 'TOAL': # Original album/movie/show title
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// case 'TOFN': # Original filename
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// case 'TOLY': # Original lyricist(s)/text writer(s)
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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 '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 '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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################# Text information frames
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################# URL link frames
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// case 'WCOM': # Commercial information
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// break;
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// case 'WCOP': # Copyright/Legal information
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// break;
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// case 'WOAF': # Official audio file webpage
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// break;
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// case 'WOAR': # Official artist/performer webpage
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// break;
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// case 'WOAS': # Official audio source webpage
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// break;
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// case 'WORS': # Official internet radio station homepage
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// break;
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// case 'WPAY': # Payment
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// break;
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// case 'WPUB': # Publishers official webpage
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// break;
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// case 'WXXX': # User defined URL link frame
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// break;
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################# URL link frames
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// case 'IPLS': # Involved people list
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// break;
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// case 'MCDI': # Music CD identifier
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// break;
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// case 'ETCO': # Event timing codes
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// break;
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// case 'MLLT': # MPEG location lookup table
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// break;
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// case 'SYTC': # Synchronized tempo codes
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// break;
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// case 'USLT': # Unsychronized lyric/text transcription
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// break;
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// case 'SYLT': # Synchronized lyric/text
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// break;
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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', $raw);
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// read until \null character
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$short_description = null;
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$last_null = false;
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$actual_text = false;
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while (ftell($fp) < $dataEnd) {
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$char = fgetc($fp);
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if ($char == "\00" && $actual_text === false) {
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if ($data['encoding'] == 0x1) { # two null-bytes for utf-16
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if ($last_null)
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$actual_text = null;
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else
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$last_null = true;
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} else # no condition for iso-8859-1
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$actual_text = null;
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}
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else if ($actual_text !== false) $actual_text .= $char;
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else $short_description .= $char;
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}
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if ($actual_text === false) $actual_text = $short_description;
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// list($short_description, $actual_text) = sscanf("s".chr(0)."s", $data['texts']);
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// list($short_description, $actual_text) = explode(chr(0), $data['texts']);
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$this->tags2[$frame_id][$data['language']] = array(
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'short' => (bool)($data['encoding'] == 0x00) ? mb_convert_encoding($short_description, 'utf-8', 'iso-8859-1') : mb_convert_encoding($short_description, 'utf-8', 'utf-16'),
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'actual' => (bool)($data['encoding'] == 0x00) ? mb_convert_encoding($actual_text, 'utf-8', 'iso-8859-1') : mb_convert_encoding($actual_text, 'utf-8', 'utf-16'),
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);
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break;
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// case 'RVAD': # Relative volume adjustment
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// break;
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// case 'EQUA': # Equalization
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// break;
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// case 'RVRB': # Reverb
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// break;
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// case 'APIC': # Attached picture
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// break;
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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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$data = unpack('L', fread($fp, $frame_size));
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$this->tags2[$frame_id] = $data[1];
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break;
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// case 'POPM': # Popularimeter
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// break;
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// case 'RBUF': # Recommended buffer size
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// break;
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// case 'AENC': # Audio encryption
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// break;
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// case 'LINK': # Linked information
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// break;
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// case 'POSS': # Position synchronisation frame
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// break;
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// case 'USER': # Terms of use
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// break;
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// case 'OWNE': # Ownership frame
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// break;
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// case 'COMR': # Commercial frame
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// break;
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// case 'ENCR': # Encryption method registration
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// break;
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// case 'GRID': # Group identification registration
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// break;
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// case 'PRIV': # Private frame
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// break;
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default:
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fseek($fp, $frame_size, SEEK_CUR);
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break;
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}
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}
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}
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/**
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* Parses id3v2.4.0 tag body.
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* @param $fp
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* @param $lastByte
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*/
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protected function parseId3v24Body($fp, $lastByte)
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{
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while (ftell($fp) < $lastByte) {
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$raw = fread($fp, 10);
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$frame_id = substr($raw, 0, 4);
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if ($frame_id == str_repeat(chr(0), 4)) {
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fseek($fp, $lastByte);
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break;
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}
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$data = unpack('Nframe_size/H2flags', substr($raw, 4));
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$frame_size = $data['frame_size'];
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$flags = base_convert($data['flags'], 16, 2);
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$this->id3v2TagsFlags[$frame_id] = array(
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'flags' => array(
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'tag_alter_preservation' => (bool)substr($flags, 1, 1),
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'file_alter_preservation' => (bool)substr($flags, 2, 1),
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'read_only' => (bool)substr($flags, 3, 1),
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'grouping_identity' => (bool)substr($flags, 9, 1),
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'compression' => (bool)substr($flags, 12, 1),
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'encryption' => (bool)substr($flags, 13, 1),
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'unsynchronisation' => (bool)substr($flags, 14, 1),
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'data_length_indicator' => (bool)substr($flags, 15, 1),
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),
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);
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switch ($frame_id) {
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// case 'UFID': # Unique file identifier
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// break;
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@ -736,10 +941,21 @@ class Mp3Info {
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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']."\00", 'utf-8', 'utf-16');
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switch($data['encoding']) {
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case 0x00: # ISO-8859-1
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return mb_convert_encoding($data['information'], 'utf-8', 'iso-8859-1');
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case 0x01: # utf-16 with BOM
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return mb_convert_encoding($data['information'] . "\00", 'utf-8', 'utf-16');
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# Following is for id3v2.4.x only
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case 0x02: # utf-16 without BOM
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return mb_convert_encoding($data['information'] . "\00", 'utf-8', 'utf-16');
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case 0x03: # utf-8
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return $data['information'];
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default:
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throw new RuntimeException('Unknown text encoding type: '.$data['encoding']);
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}
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}
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/**
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