function getMP3headerFilepointer(&$fd, &$MP3fileInfo)
{
// get all information about an MP3 file - ID3v1, ID3v2, Lyrics3, MPEG-audio
$MP3fileInfo['fileformat'] = '';
if (!$fd) {
$MP3fileInfo['error'] .= "\n" . 'Could not open file';
return FALSE;
} else {
fseek($fd, -128 - 9 - 6, SEEK_END);
$lyrics3_id3v1 = fread($fd, 128 + 9 + 6);
$lyrics3lsz = substr($lyrics3_id3v1, 0, 6);
$lyrics3end = substr($lyrics3_id3v1, 6, 9);
// LYRICSEND or LYRICS200
$id3v1tag = substr($lyrics3_id3v1, 15, 128);
if ($lyrics3end == 'LYRICSEND') {
// Lyrics3 v1 and ID3v1
$lyrics3size = 5100;
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, -128 - $lyrics3size, 1, $lyrics3size);
} else {
if ($lyrics3end == 'LYRICS200') {
// Lyrics3 v2 and ID3v1
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, -128 - $lyrics3size, 2, $lyrics3size);
} else {
if (substr($lyrics3_id3v1, strlen($lyrics3_id3v1) - 1 - 9, 9) == 'LYRICSEND') {
// Lyrics3 v1, no ID3v1 (I think according to Lyrics3 specs there MUST be ID3v1, but just in case :)
$lyrics3size = 5100;
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, 0 - $lyrics3size, 1, $lyrics3size);
} else {
if (substr($lyrics3_id3v1, strlen($lyrics3_id3v1) - 1 - 9, 9) == 'LYRICS200') {
// Lyrics3 v2, no ID3v1 (I think according to Lyrics3 specs there MUST be ID3v1, but just in case :)
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, 0 - $lyrics3size, 2, $lyrics3size);
}
}
}
}
if (substr($id3v1tag, 0, 3) == 'TAG') {
include_once GETID3_INCLUDEPATH . 'getid3.id3v1.php';
$MP3fileInfo['id3']['id3v1'] = getID3v1Filepointer($fd);
$MP3fileInfo['fileformat'] = 'id3';
}
include_once GETID3_INCLUDEPATH . 'getid3.id3v2.php';
getID3v2Filepointer($fd, $MP3fileInfo);
if (isset($MP3fileInfo['id3']['id3v2']['header'])) {
$MP3fileInfo['fileformat'] = 'id3';
$audiodataoffset = $MP3fileInfo['id3']['id3v2']['headerlength'];
if (isset($MP3fileInfo['id3']['id3v2']['footer'])) {
$audiodataoffset += 10;
}
} else {
// no ID3v2 header
if (isset($MP3fileInfo['id3']['id3v2'])) {
unset($MP3fileInfo['id3']['id3v2']);
}
$audiodataoffset = 0;
}
if ($audiodataoffset < $MP3fileInfo['filesize']) {
getOnlyMPEGaudioInfo($fd, $MP3fileInfo, $audiodataoffset);
}
if (isset($MP3fileInfo['audiodataoffset']) && (isset($MP3fileInfo['id3']['id3v2']) && $MP3fileInfo['audiodataoffset'] > $MP3fileInfo['id3']['id3v2']['headerlength'] || !isset($MP3fileInfo['id3']['id3v2']) && $MP3fileInfo['audiodataoffset'] > 0)) {
$MP3fileInfo['error'] .= "\n" . 'Unknown data before synch ';
if (isset($MP3fileInfo['id3']['id3v2']['headerlength'])) {
$MP3fileInfo['error'] .= '(ID3v2 header ends at ' . $MP3fileInfo['id3']['id3v2']['headerlength'] . ', ';
} else {
$MP3fileInfo['error'] .= '(should be at beginning of file, ';
}
$MP3fileInfo['error'] .= 'synch detected at ' . $MP3fileInfo['audiodataoffset'] . ')';
}
if (!$MP3fileInfo['fileformat']) {
$MP3fileInfo['error'] .= "\n" . 'Synch not found';
unset($MP3fileInfo['audiodataoffset']);
unset($MP3fileInfo['fileformat']);
}
}
// if ($fd)
if (isset($MP3fileInfo['id3']) && !isset($MP3fileInfo['id3']['id3v2']) && !isset($MP3fileInfo['id3']['id3v1'])) {
unset($MP3fileInfo['id3']);
}
return TRUE;
}
function HandleLyrics3Tag(&$fd, &$ThisFileInfo)
{
// Handle Lyrics3 tags
require_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($fd, $ThisFileInfo);
return true;
}
function HandleID3v1Tag(&$fd, &$ThisFileInfo)
{
fseek($fd, 0 - 128 - 9 - 6, SEEK_END);
// end - ID3v1 - LYRICSEND - [Lyrics3size]
$lyrics3_id3v1 = fread($fd, 128 + 9 + 6);
$lyrics3lsz = substr($lyrics3_id3v1, 0, 6);
// Lyrics3size
$lyrics3end = substr($lyrics3_id3v1, 6, 9);
// LYRICSEND or LYRICS200
$id3v1tag = substr($lyrics3_id3v1, 15, 128);
// ID3v1
if ($lyrics3end == 'LYRICSEND') {
// Lyrics3 v1 and ID3v1
$lyrics3size = 5100;
$ThisFileInfo['avdataend'] -= $lyrics3size;
require_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($ThisFileInfo, $fd, 0 - 128 - $lyrics3size, 1, $lyrics3size);
} elseif ($lyrics3end == 'LYRICS200') {
// Lyrics3 v2 and ID3v1
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
$ThisFileInfo['avdataend'] -= $lyrics3size;
require_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($ThisFileInfo, $fd, -128 - $lyrics3size, 2, $lyrics3size);
} elseif (substr($lyrics3_id3v1, strlen($lyrics3_id3v1) - 1 - 9, 9) == 'LYRICSEND') {
// Lyrics3 v1, no ID3v1 (I think according to Lyrics3 specs there MUST be ID3v1, but just in case :)
$lyrics3size = 5100;
$ThisFileInfo['avdataend'] -= $lyrics3size;
require_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($ThisFileInfo, $fd, 0 - $lyrics3size, 1, $lyrics3size);
} elseif (substr($lyrics3_id3v1, strlen($lyrics3_id3v1) - 1 - 9, 9) == 'LYRICS200') {
// Lyrics3 v2, no ID3v1 (I think according to Lyrics3 specs there MUST be ID3v1, but just in case :)
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
$ThisFileInfo['avdataend'] -= $lyrics3size;
require_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($ThisFileInfo, $fd, 0 - $lyrics3size, 2, $lyrics3size);
}
if (substr($id3v1tag, 0, 3) == 'TAG') {
$ThisFileInfo['avdataend'] -= 128;
require_once GETID3_INCLUDEPATH . 'getid3.id3v1.php';
getID3v1Filepointer($fd, $ThisFileInfo);
// Do not change fileformat if already set
if (empty($ThisFileInfo['fileformat'])) {
$ThisFileInfo['fileformat'] = 'id3';
}
$ThisFileInfo['tags'][] = 'id3v1';
// ID3v1 has lowest preference. We add if $ThisFileInfo[comments] is empty - this will override empty tags of higher preference, or add comments to root if not already present
if (isset($ThisFileInfo['id3v1'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['id3v1'], $ThisFileInfo, true, false, false);
}
}
return true;
}