wp-includes/ID3/module.tag.lyrics3.php

   1 <?php
   2 /////////////////////////////////////////////////////////////////
   3 /// getID3() by James Heinrich <info@getid3.org>               //
   4 //  available at http://getid3.sourceforge.net                 //
   5 //            or http://www.getid3.org                         //
   6 /////////////////////////////////////////////////////////////////
   7 // See readme.txt for more details                             //
   8 /////////////////////////////////////////////////////////////////
   9 ///                                                            //
  10 // module.tag.lyrics3.php                                      //
  11 // module for analyzing Lyrics3 tags                           //
  12 // dependencies: module.tag.apetag.php (optional)              //
  13 //                                                            ///
  14 /////////////////////////////////////////////////////////////////
  15
  16
  17 class getid3_lyrics3 extends getid3_handler
  18 {
  19
  20         public function Analyze() {
  21                 $info = &$this->getid3->info;
  22
  23                 // http://www.volweb.cz/str/tags.htm
  24
  25                 if (!getid3_lib::intValueSupported($info['filesize'])) {
  26                         $info['warning'][] = 'Unable to check for Lyrics3 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
  27                         return false;
  28                 }
  29
  30                 fseek($this->getid3->fp, (0 - 128 - 9 - 6), SEEK_END);          // end - ID3v1 - "LYRICSEND" - [Lyrics3size]
  31                 $lyrics3_id3v1 = fread($this->getid3->fp, 128 + 9 + 6);
  32                 $lyrics3lsz    = substr($lyrics3_id3v1,  0,   6); // Lyrics3size
  33                 $lyrics3end    = substr($lyrics3_id3v1,  6,   9); // LYRICSEND or LYRICS200
  34                 $id3v1tag      = substr($lyrics3_id3v1, 15, 128); // ID3v1
  35
  36                 if ($lyrics3end == 'LYRICSEND') {
  37                         // Lyrics3v1, ID3v1, no APE
  38
  39                         $lyrics3size    = 5100;
  40                         $lyrics3offset  = $info['filesize'] - 128 - $lyrics3size;
  41                         $lyrics3version = 1;
  42
  43                 } elseif ($lyrics3end == 'LYRICS200') {
  44                         // Lyrics3v2, ID3v1, no APE
  45
  46                         // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
  47                         $lyrics3size    = $lyrics3lsz + 6 + strlen('LYRICS200');
  48                         $lyrics3offset  = $info['filesize'] - 128 - $lyrics3size;
  49                         $lyrics3version = 2;
  50
  51                 } elseif (substr(strrev($lyrics3_id3v1), 0, 9) == strrev('LYRICSEND')) {
  52                         // Lyrics3v1, no ID3v1, no APE
  53
  54                         $lyrics3size    = 5100;
  55                         $lyrics3offset  = $info['filesize'] - $lyrics3size;
  56                         $lyrics3version = 1;
  57                         $lyrics3offset  = $info['filesize'] - $lyrics3size;
  58
  59                 } elseif (substr(strrev($lyrics3_id3v1), 0, 9) == strrev('LYRICS200')) {
  60
  61                         // Lyrics3v2, no ID3v1, no APE
  62
  63                         $lyrics3size    = strrev(substr(strrev($lyrics3_id3v1), 9, 6)) + 6 + strlen('LYRICS200'); // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
  64                         $lyrics3offset  = $info['filesize'] - $lyrics3size;
  65                         $lyrics3version = 2;
  66
  67                 } else {
  68
  69                         if (isset($info['ape']['tag_offset_start']) && ($info['ape']['tag_offset_start'] > 15)) {
  70
  71                                 fseek($this->getid3->fp, $info['ape']['tag_offset_start'] - 15, SEEK_SET);
  72                                 $lyrics3lsz = fread($this->getid3->fp, 6);
  73                                 $lyrics3end = fread($this->getid3->fp, 9);
  74
  75                                 if ($lyrics3end == 'LYRICSEND') {
  76                                         // Lyrics3v1, APE, maybe ID3v1
  77
  78                                         $lyrics3size    = 5100;
  79                                         $lyrics3offset  = $info['ape']['tag_offset_start'] - $lyrics3size;
  80                                         $info['avdataend'] = $lyrics3offset;
  81                                         $lyrics3version = 1;
  82                                         $info['warning'][] = 'APE tag located after Lyrics3, will probably break Lyrics3 compatability';
  83
  84                                 } elseif ($lyrics3end == 'LYRICS200') {
  85                                         // Lyrics3v2, APE, maybe ID3v1
  86
  87                                         $lyrics3size    = $lyrics3lsz + 6 + strlen('LYRICS200'); // LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
  88                                         $lyrics3offset  = $info['ape']['tag_offset_start'] - $lyrics3size;
  89                                         $lyrics3version = 2;
  90                                         $info['warning'][] = 'APE tag located after Lyrics3, will probably break Lyrics3 compatability';
  91
  92                                 }
  93
  94                         }
  95
  96                 }
  97
  98                 if (isset($lyrics3offset)) {
  99                         $info['avdataend'] = $lyrics3offset;
 100                         $this->getLyrics3Data($lyrics3offset, $lyrics3version, $lyrics3size);
 101
 102                         if (!isset($info['ape'])) {
 103                                 $GETID3_ERRORARRAY = &$info['warning'];
 104                                 if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.apetag.php', __FILE__, false)) {
 105                                         $getid3_temp = new getID3();
 106                                         $getid3_temp->openfile($this->getid3->filename);
 107                                         $getid3_apetag = new getid3_apetag($getid3_temp);
 108                                         $getid3_apetag->overrideendoffset = $info['lyrics3']['tag_offset_start'];
 109                                         $getid3_apetag->Analyze();
 110                                         if (!empty($getid3_temp->info['ape'])) {
 111                                                 $info['ape'] = $getid3_temp->info['ape'];
 112                                         }
 113                                         if (!empty($getid3_temp->info['replay_gain'])) {
 114                                                 $info['replay_gain'] = $getid3_temp->info['replay_gain'];
 115                                         }
 116                                         unset($getid3_temp, $getid3_apetag);
 117                                 }
 118                         }
 119
 120                 }
 121
 122                 return true;
 123         }
 124
 125         public function getLyrics3Data($endoffset, $version, $length) {
 126                 // http://www.volweb.cz/str/tags.htm
 127
 128                 $info = &$this->getid3->info;
 129
 130                 if (!getid3_lib::intValueSupported($endoffset)) {
 131                         $info['warning'][] = 'Unable to check for Lyrics3 because file is larger than '.round(PHP_INT_MAX / 1073741824).'GB';
 132                         return false;
 133                 }
 134
 135                 fseek($this->getid3->fp, $endoffset, SEEK_SET);
 136                 if ($length <= 0) {
 137                         return false;
 138                 }
 139                 $rawdata = fread($this->getid3->fp, $length);
 140
 141                 $ParsedLyrics3['raw']['lyrics3version'] = $version;
 142                 $ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
 143                 $ParsedLyrics3['tag_offset_start']      = $endoffset;
 144                 $ParsedLyrics3['tag_offset_end']        = $endoffset + $length - 1;
 145
 146                 if (substr($rawdata, 0, 11) != 'LYRICSBEGIN') {
 147                         if (strpos($rawdata, 'LYRICSBEGIN') !== false) {
 148
 149                                 $info['warning'][] = '"LYRICSBEGIN" expected at '.$endoffset.' but actually found at '.($endoffset + strpos($rawdata, 'LYRICSBEGIN')).' - this is invalid for Lyrics3 v'.$version;
 150                                 $info['avdataend'] = $endoffset + strpos($rawdata, 'LYRICSBEGIN');
 151                                 $rawdata = substr($rawdata, strpos($rawdata, 'LYRICSBEGIN'));
 152                                 $length = strlen($rawdata);
 153                                 $ParsedLyrics3['tag_offset_start'] = $info['avdataend'];
 154                                 $ParsedLyrics3['raw']['lyrics3tagsize'] = $length;
 155
 156                         } else {
 157
 158                                 $info['error'][] = '"LYRICSBEGIN" expected at '.$endoffset.' but found "'.substr($rawdata, 0, 11).'" instead';
 159                                 return false;
 160
 161                         }
 162
 163                 }
 164
 165                 switch ($version) {
 166
 167                         case 1:
 168                                 if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICSEND') {
 169                                         $ParsedLyrics3['raw']['LYR'] = trim(substr($rawdata, 11, strlen($rawdata) - 11 - 9));
 170                                         $this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
 171                                 } else {
 172                                         $info['error'][] = '"LYRICSEND" expected at '.(ftell($this->getid3->fp) - 11 + $length - 9).' but found "'.substr($rawdata, strlen($rawdata) - 9, 9).'" instead';
 173                                         return false;
 174                                 }
 175                                 break;
 176
 177                         case 2:
 178                                 if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICS200') {
 179                                         $ParsedLyrics3['raw']['unparsed'] = substr($rawdata, 11, strlen($rawdata) - 11 - 9 - 6); // LYRICSBEGIN + LYRICS200 + LSZ
 180                                         $rawdata = $ParsedLyrics3['raw']['unparsed'];
 181                                         while (strlen($rawdata) > 0) {
 182                                                 $fieldname = substr($rawdata, 0, 3);
 183                                                 $fieldsize = (int) substr($rawdata, 3, 5);
 184                                                 $ParsedLyrics3['raw'][$fieldname] = substr($rawdata, 8, $fieldsize);
 185                                                 $rawdata = substr($rawdata, 3 + 5 + $fieldsize);
 186                                         }
 187
 188                                         if (isset($ParsedLyrics3['raw']['IND'])) {
 189                                                 $i = 0;
 190                                                 $flagnames = array('lyrics', 'timestamps', 'inhibitrandom');
 191                                                 foreach ($flagnames as $flagname) {
 192                                                         if (strlen($ParsedLyrics3['raw']['IND']) > $i++) {
 193                                                                 $ParsedLyrics3['flags'][$flagname] = $this->IntString2Bool(substr($ParsedLyrics3['raw']['IND'], $i, 1 - 1));
 194                                                         }
 195                                                 }
 196                                         }
 197
 198                                         $fieldnametranslation = array('ETT'=>'title', 'EAR'=>'artist', 'EAL'=>'album', 'INF'=>'comment', 'AUT'=>'author');
 199                                         foreach ($fieldnametranslation as $key => $value) {
 200                                                 if (isset($ParsedLyrics3['raw'][$key])) {
 201                                                         $ParsedLyrics3['comments'][$value][] = trim($ParsedLyrics3['raw'][$key]);
 202                                                 }
 203                                         }
 204
 205                                         if (isset($ParsedLyrics3['raw']['IMG'])) {
 206                                                 $imagestrings = explode("\r\n", $ParsedLyrics3['raw']['IMG']);
 207                                                 foreach ($imagestrings as $key => $imagestring) {
 208                                                         if (strpos($imagestring, '||') !== false) {
 209                                                                 $imagearray = explode('||', $imagestring);
 210                                                                 $ParsedLyrics3['images'][$key]['filename']     =                                (isset($imagearray[0]) ? $imagearray[0] : '');
 211                                                                 $ParsedLyrics3['images'][$key]['description']  =                                (isset($imagearray[1]) ? $imagearray[1] : '');
 212                                                                 $ParsedLyrics3['images'][$key]['timestamp']    = $this->Lyrics3Timestamp2Seconds(isset($imagearray[2]) ? $imagearray[2] : '');
 213                                                         }
 214                                                 }
 215                                         }
 216                                         if (isset($ParsedLyrics3['raw']['LYR'])) {
 217                                                 $this->Lyrics3LyricsTimestampParse($ParsedLyrics3);
 218                                         }
 219                                 } else {
 220                                         $info['error'][] = '"LYRICS200" expected at '.(ftell($this->getid3->fp) - 11 + $length - 9).' but found "'.substr($rawdata, strlen($rawdata) - 9, 9).'" instead';
 221                                         return false;
 222                                 }
 223                                 break;
 224
 225                         default:
 226                                 $info['error'][] = 'Cannot process Lyrics3 version '.$version.' (only v1 and v2)';
 227                                 return false;
 228                                 break;
 229                 }
 230
 231
 232                 if (isset($info['id3v1']['tag_offset_start']) && ($info['id3v1']['tag_offset_start'] <= $ParsedLyrics3['tag_offset_end'])) {
 233                         $info['warning'][] = 'ID3v1 tag information ignored since it appears to be a false synch in Lyrics3 tag data';
 234                         unset($info['id3v1']);
 235                         foreach ($info['warning'] as $key => $value) {
 236                                 if ($value == 'Some ID3v1 fields do not use NULL characters for padding') {
 237                                         unset($info['warning'][$key]);
 238                                         sort($info['warning']);
 239                                         break;
 240                                 }
 241                         }
 242                 }
 243
 244                 $info['lyrics3'] = $ParsedLyrics3;
 245
 246                 return true;
 247         }
 248
 249         public function Lyrics3Timestamp2Seconds($rawtimestamp) {
 250                 if (preg_match('#^\\[([0-9]{2}):([0-9]{2})\\]$#', $rawtimestamp, $regs)) {
 251                         return (int) (($regs[1] * 60) + $regs[2]);
 252                 }
 253                 return false;
 254         }
 255
 256         public function Lyrics3LyricsTimestampParse(&$Lyrics3data) {
 257                 $lyricsarray = explode("\r\n", $Lyrics3data['raw']['LYR']);
 258                 foreach ($lyricsarray as $key => $lyricline) {
 259                         $regs = array();
 260                         unset($thislinetimestamps);
 261                         while (preg_match('#^(\\[[0-9]{2}:[0-9]{2}\\])#', $lyricline, $regs)) {
 262                                 $thislinetimestamps[] = $this->Lyrics3Timestamp2Seconds($regs[0]);
 263                                 $lyricline = str_replace($regs[0], '', $lyricline);
 264                         }
 265                         $notimestamplyricsarray[$key] = $lyricline;
 266                         if (isset($thislinetimestamps) && is_array($thislinetimestamps)) {
 267                                 sort($thislinetimestamps);
 268                                 foreach ($thislinetimestamps as $timestampkey => $timestamp) {
 269                                         if (isset($Lyrics3data['synchedlyrics'][$timestamp])) {
 270                                                 // timestamps only have a 1-second resolution, it's possible that multiple lines
 271                                                 // could have the same timestamp, if so, append
 272                                                 $Lyrics3data['synchedlyrics'][$timestamp] .= "\r\n".$lyricline;
 273                                         } else {
 274                                                 $Lyrics3data['synchedlyrics'][$timestamp] = $lyricline;
 275                                         }
 276                                 }
 277                         }
 278                 }
 279                 $Lyrics3data['unsynchedlyrics'] = implode("\r\n", $notimestamplyricsarray);
 280                 if (isset($Lyrics3data['synchedlyrics']) && is_array($Lyrics3data['synchedlyrics'])) {
 281                         ksort($Lyrics3data['synchedlyrics']);
 282                 }
 283                 return true;
 284         }
 285
 286         public function IntString2Bool($char) {
 287                 if ($char == '1') {
 288                         return true;
 289                 } elseif ($char == '0') {
 290                         return false;
 291                 }
 292                 return null;
 293         }
 294 }