function getLyrics3Data(&$ThisFileInfo, &$fd, $endoffset, $version, $length)
{
// http://www.volweb.cz/str/tags.htm
fseek($fd, $endoffset, SEEK_SET);
$rawdata = fread($fd, $length);
if (substr($rawdata, 0, 11) != 'LYRICSBEGIN') {
if (strpos($rawdata, 'LYRICSBEGIN') !== false) {
$ThisFileInfo['warning'] .= "\n" . '"LYRICSBEGIN" expected at ' . $endoffset . ' but actually found at ' . ($endoffset + strpos($rawdata, 'LYRICSBEGIN')) . ' - this is invalid for Lyrics3 v' . $version;
$rawdata = substr($rawdata, strpos($rawdata, 'LYRICSBEGIN'));
$length = strlen($rawdata);
} else {
$ThisFileInfo['error'] .= "\n" . '"LYRICSBEGIN" expected at ' . $endoffset . ' but found "' . substr($rawdata, 0, 11) . '" instead';
return false;
}
}
switch ($version) {
case 1:
if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICSEND') {
$ThisFileInfo['lyrics3']['raw']['lyrics3version'] = $version;
$ThisFileInfo['lyrics3']['raw']['lyrics3tagsize'] = $length;
$ThisFileInfo['lyrics3']['raw']['LYR'] = trim(substr($rawdata, 11, strlen($rawdata) - 11 - 9));
Lyrics3LyricsTimestampParse($ThisFileInfo);
} else {
$ThisFileInfo['error'] .= "\n" . '"LYRICSEND" expected at ' . (ftell($fd) - 11 + $length - 9) . ' but found "' . substr($rawdata, strlen($rawdata) - 9, 9) . '" instead';
}
break;
case 2:
if (substr($rawdata, strlen($rawdata) - 9, 9) == 'LYRICS200') {
$ThisFileInfo['lyrics3']['raw']['lyrics3version'] = $version;
$ThisFileInfo['lyrics3']['raw']['lyrics3tagsize'] = $length;
$ThisFileInfo['lyrics3']['raw']['unparsed'] = substr($rawdata, 11, strlen($rawdata) - 11 - 9 - 6);
// LYRICSBEGIN + LYRICS200 + LSZ
$rawdata = $ThisFileInfo['lyrics3']['raw']['unparsed'];
while (strlen($rawdata) > 0) {
$fieldname = substr($rawdata, 0, 3);
$fieldsize = (int) substr($rawdata, 3, 5);
$ThisFileInfo['lyrics3']['raw']["{$fieldname}"] = substr($rawdata, 8, $fieldsize);
$rawdata = substr($rawdata, 3 + 5 + $fieldsize);
}
if (isset($ThisFileInfo['lyrics3']['raw']['IND'])) {
$i = 0;
$flagnames = array('lyrics', 'timestamps', 'inhibitrandom');
foreach ($flagnames as $flagname) {
if (strlen($ThisFileInfo['lyrics3']['raw']['IND']) > ++$i) {
$ThisFileInfo['lyrics3']['flags']["{$flagname}"] = IntString2Bool(substr($ThisFileInfo['lyrics3']['raw']['IND'], $i, 1));
}
}
}
$fieldnametranslation = array('ETT' => 'title', 'EAR' => 'artist', 'EAL' => 'album', 'INF' => 'comment', 'AUT' => 'author');
foreach ($fieldnametranslation as $key => $value) {
if (isset($ThisFileInfo['lyrics3']['raw']["{$key}"])) {
$ThisFileInfo['lyrics3']['comments']["{$value}"] = $ThisFileInfo['lyrics3']['raw']["{$key}"];
}
}
if (!empty($ThisFileInfo['lyrics3']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['lyrics3']['comments'], $ThisFileInfo, true, false, false);
}
if (isset($ThisFileInfo['lyrics3']['raw']['IMG'])) {
$imagestrings = explode("\r\n", $ThisFileInfo['lyrics3']['raw']['IMG']);
foreach ($imagestrings as $key => $imagestring) {
if (strpos($imagestring, '||') !== false) {
$imagearray = explode('||', $imagestring);
$ThisFileInfo['lyrics3']['images']["{$key}"]['filename'] = $imagearray[0];
$ThisFileInfo['lyrics3']['images']["{$key}"]['description'] = $imagearray[1];
$ThisFileInfo['lyrics3']['images']["{$key}"]['timestamp'] = Lyrics3Timestamp2Seconds($imagearray[2]);
}
}
}
if (isset($ThisFileInfo['lyrics3']['raw']['LYR'])) {
Lyrics3LyricsTimestampParse($ThisFileInfo);
}
} else {
$ThisFileInfo['error'] .= "\n" . '"LYRICS200" expected at ' . (ftell($fd) - 11 + $length - 9) . ' but found "' . substr($rawdata, strlen($rawdata) - 9, 9) . '" instead';
}
break;
default:
$ThisFileInfo['error'] .= "\n" . 'Cannot process Lyrics3 version ' . $version . ' (only v1 and v2)';
break;
}
if (isset($ThisFileInfo['lyrics3'])) {
$ThisFileInfo['tags'][] = 'lyrics3';
}
return true;
}
function ParseOggPageHeader(&$fd)
{
// http://xiph.org/ogg/vorbis/doc/framing.html
$basefileoffset = ftell($fd);
// where we started from in the file
$filedata = fread($fd, FREAD_BUFFER_SIZE);
$filedataoffset = 0;
while (substr($filedata, $filedataoffset++, 4) != 'OggS') {
if (ftell($fd) - $basefileoffset >= 10000) {
// should be found before here
return FALSE;
}
if (strlen($filedata) < 1024) {
if (feof($fd) || ($filedata .= fread($fd, FREAD_BUFFER_SIZE)) === FALSE) {
// get some more data, unless eof, in which case fail
return FALSE;
}
}
}
$filedataoffset += strlen('OggS') - 1;
// page, delimited by 'OggS'
$stream_structure_version = ord(substr($filedata, $filedataoffset++, 1));
$header_type_flag = BigEndian2Bin(substr($filedata, $filedataoffset++, 1));
$header_type_flag_fresh = IntString2Bool($header_type_flag[5]);
// fresh packet
$header_type_flag_bos = IntString2Bool($header_type_flag[6]);
// first page of logical bitstream (bos)
$header_type_flag_eos = IntString2Bool($header_type_flag[7]);
// last page of logical bitstream (eos)
$pcm_absolute_position = LittleEndian2Int(substr($filedata, $filedataoffset, 8));
$filedataoffset += 8;
$stream_serial_number = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
$filedataoffset += 4;
$page_seq_no = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
$filedataoffset += 4;
$page_checksum = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
$filedataoffset += 4;
$page_segments = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
$filedataoffset += 1;
for ($i = 0; $i < $page_segments; $i++) {
$segment_table["{$i}"] = LittleEndian2Int(substr($filedata, $filedataoffset++, 1));
}
$packettype = ord(substr($filedata, $filedataoffset, 1));
$filedataoffset += 1;
$streamtype = substr($filedata, $filedataoffset, 6);
// hard-coded to 'vorbis'
$filedataoffset += 6;
fseek($fd, $filedataoffset + $basefileoffset, SEEK_SET);
$oggheader['packet_type'] = $packettype;
$oggheader['stream_type'] = $streamtype;
$oggheader['stream_structver'] = $stream_structure_version;
$oggheader['flag']['fresh'] = $header_type_flag_fresh;
$oggheader['flag']['bos'] = $header_type_flag_fresh;
$oggheader['flag']['eos'] = $header_type_flag_fresh;
$oggheader['pcm_abs_position'] = $pcm_absolute_position;
$oggheader['stream_serialno'] = $stream_serial_number;
$oggheader['page_seqno'] = $page_seq_no;
$oggheader['page_checksum'] = $page_checksum;
$oggheader['page_segments'] = $page_segments;
$oggheader['segment_table'] = $segment_table;
return $oggheader;
}
