function getAUheaderFilepointer(&$fd, &$ThisFileInfo)
{
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$AUheader = fread($fd, 8);
if (substr($AUheader, 0, 4) != '.snd') {
$ThisFileInfo['error'] .= "\n" . 'Expecting ".snd" at offset ' . $ThisFileInfo['avdataoffset'] . ', found "' . substr($AUheader, 0, 4) . '"';
return false;
}
$ThisFileInfo['fileformat'] = 'au';
$ThisFileInfo['audio']['dataformat'] = 'au';
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
$ThisFileInfo['au']['header_length'] = BigEndian2Int(substr($AUheader, 4, 4));
$AUheader .= fread($fd, $ThisFileInfo['au']['header_length'] - 8);
$ThisFileInfo['avdataoffset'] += $ThisFileInfo['au']['header_length'];
$ThisFileInfo['au']['data_size'] = BigEndian2Int(substr($AUheader, 8, 4));
$ThisFileInfo['au']['data_format_id'] = BigEndian2Int(substr($AUheader, 12, 4));
$ThisFileInfo['au']['sample_rate'] = BigEndian2Int(substr($AUheader, 16, 4));
$ThisFileInfo['au']['channels'] = BigEndian2Int(substr($AUheader, 20, 4));
$ThisFileInfo['au']['comment'] = trim(substr($AUheader, 24));
$ThisFileInfo['au']['data_format'] = AUdataFormatNameLookup($ThisFileInfo['au']['data_format_id']);
$ThisFileInfo['au']['used_bits_per_sample'] = AUdataFormatUsedBitsPerSampleLookup($ThisFileInfo['au']['data_format_id']);
if ($ThisFileInfo['au']['bits_per_sample'] = AUdataFormatBitsPerSampleLookup($ThisFileInfo['au']['data_format_id'])) {
$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['au']['bits_per_sample'];
} else {
unset($ThisFileInfo['au']['bits_per_sample']);
}
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['au']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['au']['channels'];
if (!empty($ThisFileInfo['au']['comment'])) {
$ThisFileInfo['comments']['comment'][] = $ThisFileInfo['au']['comment'];
}
if ($ThisFileInfo['avdataoffset'] + $ThisFileInfo['au']['data_size'] > $ThisFileInfo['avdataend']) {
$ThisFileInfo['warning'] .= "\n" . 'Possible truncated file - expecting "' . $ThisFileInfo['au']['data_size'] . '" bytes of audio data, only found ' . ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) . ' bytes"';
}
$ThisFileInfo['playtime_seconds'] = $ThisFileInfo['au']['data_size'] / ($ThisFileInfo['au']['sample_rate'] * $ThisFileInfo['au']['channels'] * ($ThisFileInfo['au']['used_bits_per_sample'] / 8));
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['au']['data_size'] * 8 / $ThisFileInfo['playtime_seconds'];
return true;
}
function decodeMPEGaudioHeader($fd, $offset, &$MP3fileInfo, $recursivesearch = TRUE)
{
if ($offset >= $MP3fileInfo['filesize']) {
$MP3fileInfo['error'] .= "\n" . 'end of file encounter looking for MPEG synch';
return FALSE;
}
fseek($fd, $offset, SEEK_SET);
$headerstring = fread($fd, FREAD_BUFFER_SIZE);
// MP3 audio frame structure:
// $aa $aa $aa $aa [$bb $bb] $cc...
// where $aa..$aa is the four-byte mpeg-audio header (below)
// $bb $bb is the optional 2-byte CRC
// and $cc... is the audio data
// AAAAAAAA AAABBCCD EEEEFFGH IIJJKLMM
// 01234567 01234567 01234567 01234567
// A - Frame sync (all bits set)
// B - MPEG Audio version ID
// C - Layer description
// D - Protection bit
// E - Bitrate index
// F - Sampling rate frequency index
// G - Padding bit
// H - Private bit
// I - Channel Mode
// J - Mode extension (Only if Joint stereo)
// K - Copyright
// L - Original
// M - Emphasis
$byte1 = BigEndian2Bin(substr($headerstring, 0, 1));
$byte2 = BigEndian2Bin(substr($headerstring, 1, 1));
$byte3 = BigEndian2Bin(substr($headerstring, 2, 1));
$byte4 = BigEndian2Bin(substr($headerstring, 3, 1));
if (substr(BigEndian2Bin(substr($headerstring, 0, 2)), 0, 11) == '11111111111') {
// synch detected (11 set bits in a row)
} else {
$MP3fileInfo['error'] .= "\n" . 'MPEG-audio synch not found where expected (at offset ' . $offset . ')';
return FALSE;
}
$MP3fileInfo['mpeg']['audio']['raw']['version'] = bindec(substr($byte2, 3, 2));
$MP3fileInfo['mpeg']['audio']['raw']['layer'] = bindec(substr($byte2, 5, 2));
$MP3fileInfo['mpeg']['audio']['raw']['protection'] = bindec(substr($byte2, 7, 1));
$MP3fileInfo['mpeg']['audio']['raw']['bitrate'] = bindec(substr($byte3, 0, 4));
$MP3fileInfo['mpeg']['audio']['raw']['frequency'] = bindec(substr($byte3, 4, 2));
$MP3fileInfo['mpeg']['audio']['raw']['padding'] = bindec(substr($byte3, 6, 1));
$MP3fileInfo['mpeg']['audio']['raw']['private'] = bindec(substr($byte3, 7, 1));
$MP3fileInfo['mpeg']['audio']['raw']['channelmode'] = bindec(substr($byte4, 0, 2));
$MP3fileInfo['mpeg']['audio']['raw']['modeextension'] = bindec(substr($byte4, 2, 2));
$MP3fileInfo['mpeg']['audio']['raw']['copyright'] = bindec(substr($byte4, 4, 1));
$MP3fileInfo['mpeg']['audio']['raw']['original'] = bindec(substr($byte4, 5, 1));
$MP3fileInfo['mpeg']['audio']['raw']['emphasis'] = bindec(substr($byte4, 6, 2));
if (!MPEGaudioHeaderValid($MP3fileInfo['mpeg']['audio']['raw'])) {
$MP3fileInfo['error'] .= "\n" . 'invalid MPEG audio header at offset ' . $offset;
return FALSE;
}
$MP3fileInfo['mpeg']['audio']['version'] = MPEGaudioVersionLookup($MP3fileInfo['mpeg']['audio']['raw']['version']);
$MP3fileInfo['mpeg']['audio']['layer'] = MPEGaudioLayerLookup($MP3fileInfo['mpeg']['audio']['raw']['layer']);
$MP3fileInfo['mpeg']['audio']['protection'] = MPEGaudioCRCLookup($MP3fileInfo['mpeg']['audio']['raw']['protection']);
$MP3fileInfo['mpeg']['audio']['bitrate'] = MPEGaudioBitrateLookup($MP3fileInfo['mpeg']['audio']['version'], $MP3fileInfo['mpeg']['audio']['layer'], $MP3fileInfo['mpeg']['audio']['raw']['bitrate']);
$MP3fileInfo['mpeg']['audio']['frequency'] = MPEGaudioFrequencyLookup($MP3fileInfo['mpeg']['audio']['version'], $MP3fileInfo['mpeg']['audio']['raw']['frequency']);
$MP3fileInfo['mpeg']['audio']['padding'] = (bool) $MP3fileInfo['mpeg']['audio']['raw']['padding'];
$MP3fileInfo['mpeg']['audio']['private'] = (bool) $MP3fileInfo['mpeg']['audio']['raw']['private'];
$MP3fileInfo['mpeg']['audio']['channelmode'] = MPEGaudioChannelModeLookup($MP3fileInfo['mpeg']['audio']['raw']['channelmode']);
$MP3fileInfo['mpeg']['audio']['channels'] = $MP3fileInfo['mpeg']['audio']['channelmode'] == 'mono' ? 1 : 2;
$MP3fileInfo['mpeg']['audio']['modeextension'] = MPEGaudioModeExtensionLookup($MP3fileInfo['mpeg']['audio']['layer'], $MP3fileInfo['mpeg']['audio']['raw']['modeextension']);
$MP3fileInfo['mpeg']['audio']['copyright'] = (bool) $MP3fileInfo['mpeg']['audio']['raw']['copyright'];
$MP3fileInfo['mpeg']['audio']['original'] = (bool) $MP3fileInfo['mpeg']['audio']['raw']['original'];
$MP3fileInfo['mpeg']['audio']['emphasis'] = MPEGaudioEmphasisLookup($MP3fileInfo['mpeg']['audio']['raw']['emphasis']);
if ($MP3fileInfo['mpeg']['audio']['protection']) {
$MP3fileInfo['mpeg']['audio']['crc'] = BigEndian2Int(substr($headerstring, 4, 2));
}
if ($MP3fileInfo['mpeg']['audio']['bitrate'] != 'free') {
if ($MP3fileInfo['mpeg']['audio']['version'] == '1') {
if ($MP3fileInfo['mpeg']['audio']['layer'] == 'I') {
$FrameLengthCoefficient = 48;
$FrameLengthPadding = $MP3fileInfo['mpeg']['audio']['padding'] ? 4 : 0;
// "For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long."
} else {
// Layer II / III
$FrameLengthCoefficient = 144;
$FrameLengthPadding = $MP3fileInfo['mpeg']['audio']['padding'] ? 1 : 0;
// "For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long."
}
} else {
// MPEG-2 / MPEG-2.5
if ($MP3fileInfo['mpeg']['audio']['layer'] == 'I') {
$FrameLengthCoefficient = 24;
$FrameLengthPadding = $MP3fileInfo['mpeg']['audio']['padding'] ? 4 : 0;
// "For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long."
} else {
// Layer II / III
$FrameLengthCoefficient = 72;
$FrameLengthPadding = $MP3fileInfo['mpeg']['audio']['padding'] ? 1 : 0;
// "For Layer I slot is 32 bits long, for Layer II and Layer III slot is 8 bits long."
}
}
// FrameLengthInBytes = ((Coefficient * BitRate) / SampleRate) + Padding
// http://66.96.216.160/cgi-bin/YaBB.pl?board=c&action=display&num=1018474068
// -> "Finding the next frame synch" on www.r3mix.net forums if the above link goes dead
$MP3fileInfo['mpeg']['audio']['framelength'] = (int) floor($FrameLengthCoefficient * 1000 * $MP3fileInfo['mpeg']['audio']['bitrate'] / $MP3fileInfo['mpeg']['audio']['frequency']) + $FrameLengthPadding;
}
$MP3fileInfo['bitrate'] = 1000 * $MP3fileInfo['mpeg']['audio']['bitrate'];
$nextframetestarray = array('error' => '', 'filesize' => $MP3fileInfo['filesize']);
if (isset($MP3fileInfo['mpeg']['audio']['framelength'])) {
$nextframetestoffset = $offset + $MP3fileInfo['mpeg']['audio']['framelength'];
} else {
$nextframetestoffset = $MP3fileInfo['filesize'];
}
if ($recursivesearch && isset($MP3fileInfo['mpeg']['audio']['framelength']) && $MP3fileInfo['mpeg']['audio']['framelength']) {
for ($i = 0; $i < 5; $i++) {
// check next 5 frames for validity, to make sure we haven't run across a false synch
if ($nextframetestoffset >= $MP3fileInfo['filesize']) {
// end of file
break;
}
if (decodeMPEGaudioHeader($fd, $nextframetestoffset, $nextframetestarray, FALSE)) {
// next frame is OK, get ready to check the one after that
$nextframetestoffset += $nextframetestarray['mpeg']['audio']['framelength'];
} else {
// next frame is not valid, note the error and fail, so scanning can contiue for a valid frame sequence
$MP3fileInfo['error'] .= "\n" . 'Frame at offset(' . $offset . ') is valid, but the next one at (' . $nextframetestoffset . ') is not.';
return FALSE;
}
}
}
// For Layer II there are some combinations of bitrate and mode which are not allowed.
if ($MP3fileInfo['mpeg']['audio']['layer'] == 'II') {
switch ($MP3fileInfo['mpeg']['audio']['channelmode']) {
case 'mono':
if ($MP3fileInfo['mpeg']['audio']['bitrate'] == 'free' || $MP3fileInfo['mpeg']['audio']['bitrate'] <= 192) {
// these are ok
} else {
$MP3fileInfo['error'] .= "\n" . $MP3fileInfo['mpeg']['audio']['bitrate'] . 'kbps not allowed in Layer II, ' . $MP3fileInfo['mpeg']['audio']['channelmode'] . '.';
}
break;
case 'stereo':
case 'joint stereo':
case 'dual channel':
if ($MP3fileInfo['mpeg']['audio']['bitrate'] == 'free' || $MP3fileInfo['mpeg']['audio']['bitrate'] == 64 || $MP3fileInfo['mpeg']['audio']['bitrate'] >= 96) {
// these are ok
} else {
$MP3fileInfo['error'] .= "\n" . $MP3fileInfo['mpeg']['audio']['bitrate'] . 'kbps not allowed in Layer II, ' . $MP3fileInfo['mpeg']['audio']['channelmode'] . '.';
}
break;
}
}
////////////////////////////////////////////////////////////////////////////////////
// Variable-bitrate headers
if ($MP3fileInfo['mpeg']['audio']['version'] == '1') {
if ($MP3fileInfo['mpeg']['audio']['channelmode'] == 'mono') {
$VBRidOffset = 17 + 4;
// 21 bytes
} else {
$VBRidOffset = 32 + 4;
// 36 bytes
}
} else {
// 2 or 2.5
if ($MP3fileInfo['mpeg']['audio']['channelmode'] == 'mono') {
$VBRidOffset = 9 + 4;
// 13 bytes
} else {
$VBRidOffset = 17 + 4;
// 21 bytes
}
}
$VBRid = substr($headerstring, $VBRidOffset, 4);
if ($VBRid == 'Xing') {
$MP3fileInfo['mpeg']['audio']['bitratemode'] = 'VBR';
$MP3fileInfo['mpeg']['audio']['VBR_method'] = 'Xing';
} else {
if ($VBRid == 'VBRI') {
$MP3fileInfo['mpeg']['audio']['bitratemode'] = 'VBR';
$MP3fileInfo['mpeg']['audio']['VBR_method'] = 'Fraunhofer';
} else {
$MP3fileInfo['mpeg']['audio']['bitratemode'] = 'CBR';
}
}
if ($MP3fileInfo['mpeg']['audio']['bitratemode'] == 'VBR') {
if ($MP3fileInfo['mpeg']['audio']['VBR_method'] == 'Xing') {
$XingVBROffset = $VBRidOffset + 4;
$XingHeader_Flags = substr($headerstring, $XingVBROffset, 4);
$XingVBROffset += 4;
$XingHeader_byte4 = BigEndian2Bin(substr($XingHeader_Flags, 3, 1));
$XingHeader_flags['frames'] = substr($XingHeader_byte4, 4, 1);
$XingHeader_flags['bytes'] = substr($XingHeader_byte4, 5, 1);
$XingHeader_flags['toc'] = substr($XingHeader_byte4, 6, 1);
$XingHeader_flags['vbr_scale'] = substr($XingHeader_byte4, 7, 1);
if ($XingHeader_flags['frames'] == '1') {
$XingHeader_Frames = substr($headerstring, $XingVBROffset, 4);
$XingVBROffset += 4;
$MP3fileInfo['mpeg']['audio']['VBR_frames'] = BigEndian2Int($XingHeader_Frames);
}
if ($XingHeader_flags['bytes'] == '1') {
$XingHeader_Bytes = substr($headerstring, $XingVBROffset, 4);
$XingVBROffset += 4;
$MP3fileInfo['mpeg']['audio']['VBR_bytes'] = BigEndian2Int($XingHeader_Bytes);
}
} else {
if ($MP3fileInfo['mpeg']['audio']['VBR_method'] == 'Fraunhofer') {
// specs taken from http://minnie.tuhs.org/pipermail/mp3encoder/2001-January/001800.html
$FraunhoferVBROffset = $VBRidOffset + 4;
$Fraunhofer_version = substr($headerstring, $FraunhoferVBROffset, 4);
$FraunhoferVBROffset += 4;
$Fraunhofer_quality = substr($headerstring, $FraunhoferVBROffset, 2);
$FraunhoferVBROffset += 2;
$MP3fileInfo['mpeg']['audio']['VBR_quality'] = BigEndian2Int($Fraunhofer_quality);
$Fraunhofer_Bytes = substr($headerstring, $FraunhoferVBROffset, 4);
$FraunhoferVBROffset += 4;
$MP3fileInfo['mpeg']['audio']['VBR_bytes'] = BigEndian2Int($Fraunhofer_Bytes);
$Fraunhofer_Frames = substr($headerstring, $FraunhoferVBROffset, 4);
$FraunhoferVBROffset += 4;
$MP3fileInfo['mpeg']['audio']['VBR_frames'] = BigEndian2Int($Fraunhofer_Frames);
}
}
$MP3fileInfo['mpeg']['audio']['VBR_frames']--;
// don't count the Xing / VBRI frame
if ($MP3fileInfo['mpeg']['audio']['version'] == '1' && $MP3fileInfo['mpeg']['audio']['layer'] == 'I') {
$MP3fileInfo['mpeg']['audio']['VBR_bitrate'] = $MP3fileInfo['mpeg']['audio']['VBR_bytes'] / $MP3fileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($MP3fileInfo['mpeg']['audio']['frequency'] / 384) / 1000;
} else {
if (($MP3fileInfo['mpeg']['audio']['version'] == '2' || $MP3fileInfo['mpeg']['audio']['version'] == '2.5') && $MP3fileInfo['mpeg']['audio']['layer'] == 'III') {
$MP3fileInfo['mpeg']['audio']['VBR_bitrate'] = $MP3fileInfo['mpeg']['audio']['VBR_bytes'] / $MP3fileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($MP3fileInfo['mpeg']['audio']['frequency'] / 576) / 1000;
} else {
$MP3fileInfo['mpeg']['audio']['VBR_bitrate'] = $MP3fileInfo['mpeg']['audio']['VBR_bytes'] / $MP3fileInfo['mpeg']['audio']['VBR_frames'] * 8 * ($MP3fileInfo['mpeg']['audio']['frequency'] / 1152) / 1000;
}
}
if ($MP3fileInfo['mpeg']['audio']['VBR_bitrate'] > 0) {
$MP3fileInfo['bitrate'] = 1000 * $MP3fileInfo['mpeg']['audio']['VBR_bitrate'];
unset($MP3fileInfo['mpeg']['audio']['bitrate']);
// to avoid confusion
}
}
return TRUE;
}
$frame_size = BigEndian2Int(substr($frame_header, 3, 3), 0);
$frame_flags = '';
// not used for anything, just to avoid E_NOTICEs
} else {
if ($id3info['id3']['id3v2']['majorversion'] > 2) {
$frame_header = substr($framedata, 0, 10);
// take next 10 bytes for header
$framedata = substr($framedata, 10);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 4);
if ($id3info['id3']['id3v2']['majorversion'] == 3) {
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
} else {
// ID3v2.4+
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 1);
// 32-bit synchsafe integer (28-bit value)
}
$frame_flags = BigEndian2Bin(substr($frame_header, 8, 2));
}
}
if ($frame_size <= strlen($framedata) && IsValidID3v2FrameName($frame_name, $id3info['id3']['id3v2']['majorversion'])) {
$id3info['id3']['id3v2']["{$frame_name}"]['data'] = substr($framedata, 0, $frame_size);
// in getid3.frames.php - this function does all the FrameID-level parsing
ID3v2FrameProcessing($frame_name, $frame_flags, $id3info);
if (isset($id3info['id3']['id3v2']['APIC'][0]['data']) && strlen($id3info['id3']['id3v2']['APIC'][0]['data']) > 0) {
if (isset($rawdata)) {
echo $id3info['id3']['id3v2']['APIC'][0]['data'];
} else {
include_once GETID3_INCLUDEPATH . 'getid3.getimagesize.php';
$imagechunkcheck = GetDataImageSize($id3info['id3']['id3v2']['APIC'][0]['data']);
function getMIDIHeaderFilepointer(&$fd, &$MP3fileInfo, $scanwholefile = TRUE)
{
if (!$fd) {
$MP3fileInfo['error'] .= "\n" . 'Could not open file';
return FALSE;
} else {
rewind($fd);
$MIDIdata = fread($fd, FREAD_BUFFER_SIZE);
$offset = 0;
$MIDIheaderID = substr($MIDIdata, $offset, 4);
// 'MThd'
$offset += 4;
$MP3fileInfo['midi']['raw']['headersize'] = BigEndian2Int(substr($MIDIdata, $offset, 4));
$offset += 4;
$MP3fileInfo['midi']['raw']['fileformat'] = BigEndian2Int(substr($MIDIdata, $offset, 2));
$offset += 2;
$MP3fileInfo['midi']['raw']['tracks'] = BigEndian2Int(substr($MIDIdata, $offset, 2));
$offset += 2;
$MP3fileInfo['midi']['raw']['ticksperqnote'] = BigEndian2Int(substr($MIDIdata, $offset, 2));
$offset += 2;
for ($i = 0; $i < $MP3fileInfo['midi']['raw']['tracks']; $i++) {
if (strlen($MIDIdata) - $offset < 8) {
$MIDIdata .= fread($fd, FREAD_BUFFER_SIZE);
}
$trackID = substr($MIDIdata, $offset, 4);
$offset += 4;
if ($trackID == 'MTrk') {
$tracksize = BigEndian2Int(substr($MIDIdata, $offset, 4));
$offset += 4;
// $MP3fileInfo['midi']['tracks']["$i"]['size'] = $tracksize;
$trackdataarray["{$i}"] = substr($MIDIdata, $offset, $tracksize);
$offset += $tracksize;
} else {
$MP3fileInfo['error'] .= "\n" . 'Expecting "MTrk" at ' . $offset . ', found ' . $trackID . ' instead';
return FALSE;
}
}
if (!isset($trackdataarray) || !is_array($trackdataarray)) {
$MP3fileInfo['error'] .= "\n" . 'Cannot find MIDI track information';
unset($MP3fileInfo['midi']);
unset($MP3fileInfo['fileformat']);
return FALSE;
}
if ($scanwholefile) {
// this can take quite a long time, so have the option to bypass it if speed is very important
$MP3fileInfo['midi']['totalticks'] = 0;
$MP3fileInfo['playtime_seconds'] = 0;
$CurrentMicroSecondsPerBeat = 500000;
// 120 beats per minute; 60,000,000 microseconds per minute -> 500,000 microseconds per beat
$CurrentBeatsPerMinute = 120;
// 120 beats per minute; 60,000,000 microseconds per minute -> 500,000 microseconds per beat
foreach ($trackdataarray as $tracknumber => $trackdata) {
$eventsoffset = 0;
$LastIssuedMIDIcommand = 0;
$LastIssuedMIDIchannel = 0;
$CumulativeDeltaTime = 0;
$TicksAtCurrentBPM = 0;
while ($eventsoffset < strlen($trackdata)) {
$eventid = 0;
if (isset($MIDIevents["{$tracknumber}"]) && is_array($MIDIevents["{$tracknumber}"])) {
$eventid = count($MIDIevents["{$tracknumber}"]);
}
$deltatime = 0;
for ($i = 0; $i < 4; $i++) {
$deltatimebyte = ord(substr($trackdata, $eventsoffset++, 1));
$deltatime = ($deltatime << 7) + ($deltatimebyte & 0x7f);
if ($deltatimebyte & 0x80) {
// another byte follows
} else {
break;
}
}
$CumulativeDeltaTime += $deltatime;
$TicksAtCurrentBPM += $deltatime;
$MIDIevents["{$tracknumber}"]["{$eventid}"]['deltatime'] = $deltatime;
$MIDI_event_channel = ord(substr($trackdata, $eventsoffset++, 1));
if ($MIDI_event_channel & 0x80) {
// OK, normal event - MIDI command has MSB set
$LastIssuedMIDIcommand = $MIDI_event_channel >> 4;
$LastIssuedMIDIchannel = $MIDI_event_channel & 0xf;
} else {
// running event - assume last command
$eventsoffset--;
}
$MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] = $LastIssuedMIDIcommand;
$MIDIevents["{$tracknumber}"]["{$eventid}"]['channel'] = $LastIssuedMIDIchannel;
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0x8) {
// Note off (key is released)
$notenumber = ord(substr($trackdata, $eventsoffset++, 1));
$velocity = ord(substr($trackdata, $eventsoffset++, 1));
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0x9) {
// Note on (key is pressed)
$notenumber = ord(substr($trackdata, $eventsoffset++, 1));
$velocity = ord(substr($trackdata, $eventsoffset++, 1));
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0xa) {
// Key after-touch
$notenumber = ord(substr($trackdata, $eventsoffset++, 1));
$velocity = ord(substr($trackdata, $eventsoffset++, 1));
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0xb) {
// Control Change
$controllernum = ord(substr($trackdata, $eventsoffset++, 1));
$newvalue = ord(substr($trackdata, $eventsoffset++, 1));
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0xc) {
// Program (patch) change
$newprogramnum = ord(substr($trackdata, $eventsoffset++, 1));
$MP3fileInfo['midi']['raw']['track']["{$tracknumber}"]['instrumentid'] = $newprogramnum;
if ($tracknumber == 10) {
$MP3fileInfo['midi']['raw']['track']["{$tracknumber}"]['instrument'] = GeneralMIDIpercussionLookup($newprogramnum);
} else {
$MP3fileInfo['midi']['raw']['track']["{$tracknumber}"]['instrument'] = GeneralMIDIinstrumentLookup($newprogramnum);
}
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0xd) {
// Channel after-touch
$channelnumber = ord(substr($trackdata, $eventsoffset++, 1));
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0xe) {
// Pitch wheel change (2000H is normal or no change)
$changeLSB = ord(substr($trackdata, $eventsoffset++, 1));
$changeMSB = ord(substr($trackdata, $eventsoffset++, 1));
$pitchwheelchange = ($changeMSB & 0x7f) << 7 & ($changeLSB & 0x7f);
} else {
if ($MIDIevents["{$tracknumber}"]["{$eventid}"]['eventid'] == 0xf && $MIDIevents["{$tracknumber}"]["{$eventid}"]['channel'] == 0xf) {
$METAeventCommand = ord(substr($trackdata, $eventsoffset++, 1));
$METAeventLength = ord(substr($trackdata, $eventsoffset++, 1));
$METAeventData = substr($trackdata, $eventsoffset, $METAeventLength);
$eventsoffset += $METAeventLength;
switch ($METAeventCommand) {
case 0x0:
// Set track sequence number
$track_sequence_number = BigEndian2Int(substr($METAeventData, 0, $METAeventLength));
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['seqno'] = $track_sequence_number;
break;
case 0x1:
// Text: generic
$text_generic = substr($METAeventData, 0, $METAeventLength);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['text'] = $text_generic;
if (!isset($MP3fileInfo['midi']['comment'])) {
$MP3fileInfo['midi']['comment'] = '';
}
$MP3fileInfo['midi']['comment'] .= $text_generic . "\n";
break;
case 0x2:
// Text: copyright
$text_copyright = substr($METAeventData, 0, $METAeventLength);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['copyright'] = $text_copyright;
if (!isset($MP3fileInfo['midi']['copyright'])) {
$MP3fileInfo['midi']['copyright'] = '';
}
$MP3fileInfo['midi']['copyright'] = $text_copyright . "\n";
break;
case 0x3:
// Text: track name
$text_trackname = substr($METAeventData, 0, $METAeventLength);
$MP3fileInfo['midi']['raw']['track']["{$tracknumber}"]['name'] = $text_trackname;
break;
case 0x4:
// Text: track instrument name
$text_instrument = substr($METAeventData, 0, $METAeventLength);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['instrument'] = $text_instrument;
break;
case 0x5:
// Text: lyric
$text_lyric = substr($METAeventData, 0, $METAeventLength);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['lyric'] = $text_lyric;
if (!isset($MP3fileInfo['midi']['lyric'])) {
$MP3fileInfo['midi']['lyric'] = '';
}
$MP3fileInfo['midi']['lyric'] .= $text_lyric . "\n";
break;
case 0x6:
// Text: marker
$text_marker = substr($METAeventData, 0, $METAeventLength);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['marker'] = $text_marker;
break;
case 0x7:
// Text: cue point
$text_cuepoint = substr($METAeventData, 0, $METAeventLength);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['cuepoint'] = $text_cuepoint;
break;
case 0x2f:
// End Of Track
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['EOT'] = $CumulativeDeltaTime;
break;
case 0x51:
// Tempo: microseconds / quarter note
$tempo_usperqnote = BigEndian2Int(substr($METAeventData, 0, $METAeventLength));
// $MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['us_qnote'] = $tempo_usperqnote;
$MP3fileInfo['midi']['raw']['events']["{$tracknumber}"]["{$CumulativeDeltaTime}"]['us_qnote'] = $tempo_usperqnote;
//$MP3fileInfo['playtime_seconds'] += ($TicksAtCurrentBPM / $MP3fileInfo['midi']['raw']['ticksperqnote']) * ($CurrentMicroSecondsPerBeat / 1000000);
$CurrentMicroSecondsPerBeat = $tempo_usperqnote;
$CurrentBeatsPerMinute = 1000000 / $CurrentMicroSecondsPerBeat * 60;
$MicroSecondsPerQuarterNoteAfter["{$CumulativeDeltaTime}"] = $CurrentMicroSecondsPerBeat;
$TicksAtCurrentBPM = 0;
break;
case 0x58:
// Time signature
$timesig_numerator = BigEndian2Int(substr($METAeventData, 0, 1));
$timesig_denominator = pow(2, BigEndian2Int(substr($METAeventData, 1, 1)));
// $02 -> x/4, $03 -> x/8, etc
$timesig_32inqnote = BigEndian2Int(substr($METAeventData, 2, 1));
// number of 32nd notes to the quarter note
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['timesig_32inqnote'] = $timesig_32inqnote;
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['timesig_numerator'] = $timesig_numerator;
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['timesig_denominator'] = $timesig_denominator;
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['timesig_text'] = $timesig_numerator.'/'.$timesig_denominator;
$MP3fileInfo['midi']['timesignature'][] = $timesig_numerator . '/' . $timesig_denominator;
break;
case 0x59:
// Keysignature
$keysig_sharpsflats = BigEndian2Int(substr($METAeventData, 0, 1)) & 0x7f;
// (-7 -> 7 flats, 0 ->key of C, 7 -> 7 sharps)
$keysig_sfsign = BigEndian2Int(substr($METAeventData, 0, 1)) & 0x80;
if ($keysig_sfsign == 1) {
$keysig_sharpsflats = 0 - $keysig_sharpsflats;
}
$keysig_majorminor = BigEndian2Int(substr($METAeventData, 1, 1));
// 0 -> major, 1 -> minor
$keysigs = array(-7 => 'Cb', -6 => 'Gb', -5 => 'Db', -4 => 'Ab', -3 => 'Eb', -2 => 'Bb', -1 => 'F', 0 => 'C', 1 => 'G', 2 => 'D', 3 => 'A', 4 => 'E', 5 => 'B', 6 => 'F#', 7 => 'C#');
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['keysig_sharps'] = (($keysig_sharpsflats > 0) ? abs($keysig_sharpsflats) : 0);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['keysig_flats'] = (($keysig_sharpsflats < 0) ? abs($keysig_sharpsflats) : 0);
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['keysig_minor'] = (bool) $keysig_majorminor;
//$MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['keysig_text'] = $keysigs["$keysig_sharpsflats"].' '.($MP3fileInfo['midi']['raw']['events']["$tracknumber"]["$eventid"]['keysig_minor'] ? 'minor' : 'major');
$MP3fileInfo['midi']['keysignature'][] = $keysigs["{$keysig_sharpsflats}"] . ' ' . ((bool) $keysig_majorminor ? 'minor' : 'major');
break;
case 0x7f:
// Sequencer specific information
$custom_data = substr($METAeventData, 0, $METAeventLength);
break;
default:
break;
}
} else {
// unknown MIDI event?
}
}
}
}
}
}
}
}
}
if ($tracknumber > 0) {
$MP3fileInfo['midi']['totalticks'] = max($MP3fileInfo['midi']['totalticks'], $CumulativeDeltaTime);
}
}
$previoustickoffset = 0;
foreach ($MicroSecondsPerQuarterNoteAfter as $tickoffset => $microsecondsperbeat) {
if ($MP3fileInfo['midi']['totalticks'] > $tickoffset) {
$MP3fileInfo['playtime_seconds'] += ($tickoffset - $previoustickoffset) / $MP3fileInfo['midi']['raw']['ticksperqnote'] * ($microsecondsperbeat / 1000000);
$previoustickoffset = $tickoffset;
}
}
if ($MP3fileInfo['midi']['totalticks'] > $previoustickoffset) {
$MP3fileInfo['playtime_seconds'] += ($MP3fileInfo['midi']['totalticks'] - $previoustickoffset) / $MP3fileInfo['midi']['raw']['ticksperqnote'] * ($microsecondsperbeat / 1000000);
}
}
return TRUE;
}
}
function ID3v2FrameProcessing($frame_name, $frame_flags, &$MP3fileInfo)
{
// define $frame_arrayindex once here (used for many frames), override or ignore as neccesary
$frame_arrayindex = count($MP3fileInfo['id3']['id3v2']["{$frame_name}"]);
// 'data', 'datalength'
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) {
$frame_arrayindex--;
}
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'])) {
$frame_arrayindex--;
}
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'])) {
$frame_arrayindex--;
}
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'])) {
$frame_arrayindex--;
}
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'])) {
$frame_arrayindex--;
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
// frame flags are not part of the ID3v2.2 standard
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3) {
// Frame Header Flags
// %abc00000 %ijk00000
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['TagAlterPreservation'] = (bool) substr($frame_flags, 0, 1);
// a - Tag alter preservation
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['FileAlterPreservation'] = (bool) substr($frame_flags, 1, 1);
// b - File alter preservation
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['ReadOnly'] = (bool) substr($frame_flags, 2, 1);
// c - Read only
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression'] = (bool) substr($frame_flags, 8, 1);
// i - Compression
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Encryption'] = (bool) substr($frame_flags, 9, 1);
// j - Encryption
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['GroupingIdentity'] = (bool) substr($frame_flags, 10, 1);
// k - Grouping identity
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 4) {
// Frame Header Flags
// %0abc0000 %0h00kmnp
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['TagAlterPreservation'] = (bool) substr($frame_flags, 1, 1);
// a - Tag alter preservation
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['FileAlterPreservation'] = (bool) substr($frame_flags, 2, 1);
// b - File alter preservation
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['ReadOnly'] = (bool) substr($frame_flags, 3, 1);
// c - Read only
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['GroupingIdentity'] = (bool) substr($frame_flags, 9, 1);
// h - Grouping identity
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression'] = (bool) substr($frame_flags, 12, 1);
// k - Compression
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Encryption'] = (bool) substr($frame_flags, 13, 1);
// m - Encryption
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Unsynchronisation'] = (bool) substr($frame_flags, 14, 1);
// n - Unsynchronisation
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['DataLengthIndicator'] = (bool) substr($frame_flags, 15, 1);
// p - Data length indicator
}
}
// Frame-level de-unsynchronization - ID3v2.4
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['Unsynchronisation'])) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = DeUnSynchronise($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
}
// Frame-level de-compression
if (isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression'])) {
// it's on the wishlist :)
}
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'UFID' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'UFI') {
// 4.1 UFI Unique file identifier
// There may be more than one 'UFID' frame in a tag,
// but only one with the same 'Owner identifier'.
// <Header for 'Unique file identifier', ID: 'UFID'>
// Owner identifier <text string> $00
// Identifier <up to 64 bytes binary data>
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0));
$frame_idstring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, $frame_terminatorpos);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_idstring;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(chr(0)));
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'TXXX' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'TXX') {
// 4.2.2 TXX User defined text information frame
// There may be more than one 'TXXX' frame in each tag,
// but only one with the same description.
// <Header for 'User defined text information frame', ID: 'TXXX'>
// Text encoding $xx
// Description <text string according to encoding> $00 (00)
// Value <text string according to encoding>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)));
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'], $frame_textencoding);
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($frame_name[0] == 'T') {
// 4.2. T??[?] Text information frame
// There may only be one text information frame of its kind in an tag.
// <Header for 'Text information frame', ID: 'T000' - 'TZZZ',
// excluding 'TXXX' described in 4.2.6.>
// Text encoding $xx
// Information <text string(s) according to encoding>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
// $MP3fileInfo['id3']['id3v2']["$frame_name"]['data'] = substr($MP3fileInfo['id3']['id3v2']["$frame_name"]['data'], $frame_offset);
// this one-line method should work, but as a safeguard against null-padded data, do it the safe way
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
if ($frame_terminatorpos) {
// there are null bytes after the data - this is not according to spec
// only use data up to first null byte
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
} else {
// no null bytes following data, just use all data
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
}
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression']) || !$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['compression']) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'WXXX' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'WXX') {
// 4.3.2 WXX User defined URL link frame
// There may be more than one 'WXXX' frame in each tag,
// but only one with the same description
// <Header for 'User defined URL link frame', ID: 'WXXX'>
// Text encoding $xx
// Description <text string according to encoding> $00 (00)
// URL <text string>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding));
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
if ($frame_terminatorpos) {
// there are null bytes after the data - this is not according to spec
// only use data up to first null byte
$frame_urldata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, $frame_terminatorpos);
} else {
// no null bytes following data, just use all data
$frame_urldata = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'];
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['url'] = $frame_urldata;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($frame_name[0] == 'W') {
// 4.3. W??? URL link frames
// There may only be one URL link frame of its kind in a tag,
// except when stated otherwise in the frame description
// <Header for 'URL link frame', ID: 'W000' - 'WZZZ', excluding 'WXXX'
// described in 4.3.2.>
// URL <text string>
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['url'] = trim($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3 && $frame_name == 'IPLS' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'IPL') {
// 4.4 IPL Involved people list (ID3v2.2 only)
// There may only be one 'IPL' frame in each tag
// <Header for 'User defined URL link frame', ID: 'IPL'>
// Text encoding $xx
// People list strings <textstrings>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encoding'] = TextEncodingLookup('encoding', $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'MCDI' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'MCI') {
// 4.5 MCI Music CD identifier
// There may only be one 'MCDI' frame in each tag
// <Header for 'Music CD identifier', ID: 'MCDI'>
// CD TOC <binary data>
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
// no other special processing needed
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'ETCO' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'ETC') {
// 4.6 ETC Event timing codes
// There may only be one 'ETCO' frame in each tag
// <Header for 'Event timing codes', ID: 'ETCO'>
// Time stamp format $xx
// Where time stamp format is:
// $01 (32-bit value) MPEG frames from beginning of file
// $02 (32-bit value) milliseconds from beginning of file
// Followed by a list of key events in the following format:
// Type of event $xx
// Time stamp $xx (xx ...)
// The 'Time stamp' is set to zero if directly at the beginning of the sound
// or after the previous event. All events MUST be sorted in chronological order.
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
while ($frame_offset < strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['typeid'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['type'] = ETCOEventLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['typeid']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['timestamp'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$frame_offset += 4;
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'MLLT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'MLL') {
// 4.7 MLL MPEG location lookup table
// There may only be one 'MLLT' frame in each tag
// <Header for 'Location lookup table', ID: 'MLLT'>
// MPEG frames between reference $xx xx
// Bytes between reference $xx xx xx
// Milliseconds between reference $xx xx xx
// Bits for bytes deviation $xx
// Bits for milliseconds dev. $xx
// Then for every reference the following data is included;
// Deviation in bytes %xxx....
// Deviation in milliseconds %xxx....
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framesbetweenreferences'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, 2));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bytesbetweenreferences'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 2, 3));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['msbetweenreferences'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 5, 3));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 8, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsformsdeviation'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 9, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 10);
while ($frame_offset < strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) {
$deviationbitstream .= BigEndian2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
}
while (strlen($deviationbitstream)) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['bytedeviation'] = bindec(substr($deviationbitstream, 0, $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation']));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['msdeviation'] = bindec(substr($deviationbitstream, $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'], $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsformsdeviation']));
$deviationbitstream = substr($deviationbitstream, $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsforbytesdeviation'] + $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsformsdeviation']);
$frame_arrayindex++;
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'SYTC' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'STC') {
// 4.8 STC Synchronised tempo codes
// There may only be one 'SYTC' frame in each tag
// <Header for 'Synchronised tempo codes', ID: 'SYTC'>
// Time stamp format $xx
// Tempo data <binary data>
// Where time stamp format is:
// $01 (32-bit value) MPEG frames from beginning of file
// $02 (32-bit value) milliseconds from beginning of file
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
while ($frame_offset < strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'])) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['tempo'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['tempo'] == 255) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['tempo'] += ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['timestamp'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$frame_offset += 4;
$frame_arrayindex++;
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'USLT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'ULT') {
// 4.9 ULT Unsynchronised lyric/text transcription
// There may be more than one 'Unsynchronised lyrics/text transcription' frame
// in each tag, but only one with the same language and content descriptor.
// <Header for 'Unsynchronised lyrics/text transcription', ID: 'USLT'>
// Text encoding $xx
// Language $xx xx xx
// Content descriptor <text string according to encoding> $00 (00)
// Lyrics/text <full text string according to encoding>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3);
$frame_offset += 3;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['language'] = $frame_language;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['languagename'] = LanguageLookup($frame_language, FALSE);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'], $frame_textencoding);
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'], $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'SYLT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'SLT') {
// 4.10 SLT Synchronised lyric/text
// There may be more than one 'SYLT' frame in each tag,
// but only one with the same language and content descriptor.
// <Header for 'Synchronised lyrics/text', ID: 'SYLT'>
// Text encoding $xx
// Language $xx xx xx
// Time stamp format $xx
// $01 (32-bit value) MPEG frames from beginning of file
// $02 (32-bit value) milliseconds from beginning of file
// Content type $xx
// Content descriptor <text string according to encoding> $00 (00)
// Terminated text to be synced (typically a syllable)
// Sync identifier (terminator to above string) $00 (00)
// Time stamp $xx (xx ...)
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3);
$frame_offset += 3;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contenttypeid'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contenttype'] = SYTLContentTypeLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contenttypeid']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['language'] = $frame_language;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['languagename'] = LanguageLookup($frame_language, FALSE);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$timestampindex = 0;
$frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
while (strlen($frame_remainingdata)) {
$frame_offset = 0;
$frame_terminatorpos = strpos($frame_remainingdata, TextEncodingLookup('terminator', $frame_textencoding));
if ($frame_terminatorpos === FALSE) {
$frame_remainingdata = '';
} else {
if (ord(substr($frame_remainingdata, $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['data'] = substr($frame_remainingdata, $frame_offset, $frame_terminatorpos - $frame_offset);
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['data'], $frame_textencoding);
}
$frame_remainingdata = substr($frame_remainingdata, $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)));
if ($timestampindex == 0 && ord($frame_remainingdata[0]) != 0) {
// timestamp probably omitted for first data item
} else {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$timestampindex}"]['timestamp'] = BigEndian2Int(substr($frame_remainingdata, 0, 4));
$frame_remainingdata = substr($frame_remainingdata, 4);
}
$timestampindex++;
}
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'COMM' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'COM') {
// 4.11 COM Comments
// There may be more than one comment frame in each tag,
// but only one with the same language and content descriptor.
// <Header for 'Comment', ID: 'COMM'>
// Text encoding $xx
// Language $xx xx xx
// Short content descrip. <text string according to encoding> $00 (00)
// The actual text <full text string according to encoding>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3);
$frame_offset += 3;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_text = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['language'] = $frame_language;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['languagename'] = LanguageLookup($frame_language, FALSE);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = $frame_text;
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding);
}
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidata'] = RoughTranslateUnicodeToASCII($frame_text, $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'RVA2') {
// 4.11 RVA2 Relative volume adjustment (2) (ID3v2.4+ only)
// There may be more than one 'RVA2' frame in each tag,
// but only one with the same identification string
// <Header for 'Relative volume adjustment (2)', ID: 'RVA2'>
// Identification <text string> $00
// The 'identification' string is used to identify the situation and/or
// device where this adjustment should apply. The following is then
// repeated for every channel:
// Type of channel $xx
// Volume adjustment $xx xx
// Bits representing peak $xx
// Peak volume $xx (xx ...)
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0));
$frame_idstring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], 0, $frame_terminatorpos);
if (ord($frame_idstring) === 0) {
$frame_idstring = '';
}
$frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(chr(0)));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_idstring;
while (strlen($frame_remainingdata)) {
$frame_offset = 0;
$frame_channeltypeid = substr($frame_remainingdata, $frame_offset++, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['channeltypeid'] = $frame_channeltypeid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['channeltype'] = RVA2ChannelTypeLookup($frame_channeltypeid);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['volumeadjust'] = BigEndian2Int(substr($frame_remainingdata, $frame_offset, 2)) - 0x7fff;
// 16-bit signed
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['bitspeakvolume'] = ord(substr($frame_remainingdata, $frame_offset++, 1));
$frame_bytespeakvolume = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_channeltypeid}"]['bitspeakvolume'] / 8);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['peakvolume'] = BigEndian2Int(substr($frame_remainingdata, $frame_offset, $frame_bytespeakvolume));
$frame_remainingdata = substr($frame_remainingdata, $frame_offset + $frame_bytespeakvolume);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]["{$frame_channeltypeid}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3 && $frame_name == 'RVAD' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'RVA') {
// 4.12 RVA Relative volume adjustment (ID3v2.2 only)
// There may only be one 'RVA' frame in each tag
// <Header for 'Relative volume adjustment', ID: 'RVA'>
// ID3v2.2 => Increment/decrement %000000ba
// ID3v2.3 => Increment/decrement %00fedcba
// Bits used for volume descr. $xx
// Relative volume change, right $xx xx (xx ...) // a
// Relative volume change, left $xx xx (xx ...) // b
// Peak volume right $xx xx (xx ...)
// Peak volume left $xx xx (xx ...)
// ID3v2.3 only, optional (not present in ID3v2.2):
// Relative volume change, right back $xx xx (xx ...) // c
// Relative volume change, left back $xx xx (xx ...) // d
// Peak volume right back $xx xx (xx ...)
// Peak volume left back $xx xx (xx ...)
// ID3v2.3 only, optional (not present in ID3v2.2):
// Relative volume change, center $xx xx (xx ...) // e
// Peak volume center $xx xx (xx ...)
// ID3v2.3 only, optional (not present in ID3v2.2):
// Relative volume change, bass $xx xx (xx ...) // f
// Peak volume bass $xx xx (xx ...)
$frame_offset = 0;
$frame_incrdecrflags = BigEndian2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['right'] = (bool) substr($frame_incrdecrflags, 6, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['left'] = (bool) substr($frame_incrdecrflags, 7, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsvolume'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_bytesvolume = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsvolume'] / 8);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['right'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['right'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['right'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['left'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['left'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['left'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['right'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['left'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
if (strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']) > 0) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['rightrear'] = (bool) substr($frame_incrdecrflags, 4, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['leftrear'] = (bool) substr($frame_incrdecrflags, 5, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['rightrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['rightrear'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['rightrear'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['leftrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['leftrear'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['leftrear'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['rightrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['leftrear'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
if (strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']) > 0) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['center'] = (bool) substr($frame_incrdecrflags, 3, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['center'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['center'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['center'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['center'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
if (strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']) > 0) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['bass'] = (bool) substr($frame_incrdecrflags, 2, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['bass'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['incdec']['bass'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['volumechange']['bass'] *= -1;
}
$frame_offset += $frame_bytesvolume;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakvolume']['bass'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesvolume));
$frame_offset += $frame_bytesvolume;
}
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'EQU2') {
// 4.12 EQU2 Equalisation (2) (ID3v2.4+ only)
// There may be more than one 'EQU2' frame in each tag,
// but only one with the same identification string
// <Header of 'Equalisation (2)', ID: 'EQU2'>
// Interpolation method $xx
// $00 Band
// $01 Linear
// Identification <text string> $00
// The following is then repeated for every adjustment point
// Frequency $xx xx
// Volume adjustment $xx xx
$frame_offset = 0;
$frame_interpolationmethod = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_idstring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_idstring) === 0) {
$frame_idstring = '';
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_idstring;
$frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(chr(0)));
while (strlen($frame_remainingdata)) {
$frame_frequency = BigEndian2Int(substr($frame_remainingdata, 0, 2)) / 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']["{$frame_frequency}"] = BigEndian2Int(substr($frame_remainingdata, 2, 2));
$frame_remainingdata = substr($frame_remainingdata, 4);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['interpolationmethod'] = $frame_interpolationmethod;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3 && $frame_name == 'EQUA' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'EQU') {
// 4.13 EQU Equalisation (ID3v2.2 only)
// There may only be one 'EQUA' frame in each tag
// <Header for 'Relative volume adjustment', ID: 'EQU'>
// Adjustment bits $xx
// This is followed by 2 bytes + ('adjustment bits' rounded up to the
// nearest byte) for every equalisation band in the following format,
// giving a frequency range of 0 - 32767Hz:
// Increment/decrement %x (MSB of the Frequency)
// Frequency (lower 15 bits)
// Adjustment $xx (xx ...)
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['adjustmentbits'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1);
$frame_adjustmentbytes = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['adjustmentbits'] / 8);
$frame_remainingdata = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
while (strlen($frame_remainingdata)) {
$frame_frequencystr = BigEndian2Bin(substr($frame_remainingdata, 0, 2));
$frame_incdec = (bool) substr($frame_frequencystr, 0, 1);
$frame_frequency = bindec(substr($frame_frequencystr, 1, 15));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['incdec'] = $frame_incdec;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['adjustment'] = BigEndian2Int(substr($frame_remainingdata, 2, $frame_adjustmentbytes));
if ($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['incdec'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_frequency}"]['adjustment'] *= -1;
}
$frame_remainingdata = substr($frame_remainingdata, 2 + $frame_adjustmentbytes);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'RVRB' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'REV') {
// 4.14 REV Reverb
// There may only be one 'RVRB' frame in each tag.
// <Header for 'Reverb', ID: 'RVRB'>
// Reverb left (ms) $xx xx
// Reverb right (ms) $xx xx
// Reverb bounces, left $xx
// Reverb bounces, right $xx
// Reverb feedback, left to left $xx
// Reverb feedback, left to right $xx
// Reverb feedback, right to right $xx
// Reverb feedback, right to left $xx
// Premix left to right $xx
// Premix right to left $xx
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['left'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['right'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bouncesL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bouncesR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackLL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackLR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackRR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['feedbackRL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['premixLR'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['premixRL'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'APIC' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'PIC') {
// 4.15 PIC Attached picture
// There may be several pictures attached to one file,
// each in their individual 'APIC' frame, but only one
// with the same content descriptor
// <Header for 'Attached picture', ID: 'APIC'>
// Text encoding $xx
// ID3v2.3+ => MIME type <text string> $00
// ID3v2.2 => Image format $xx xx xx
// Picture type $xx
// Description <text string according to encoding> $00 (00)
// Picture data <binary data>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) {
$frame_imagetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3);
if (strtolower($frame_imagetype) == 'ima') {
// complete hack for mp3Rage (www.chaoticsoftware.com) that puts ID3v2.3-formatted
// MIME type instead of 3-char ID3v2.2-format image type (thanks xbhoff@pacbell.net)
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_mimetype) === 0) {
$frame_mimetype = '';
}
$frame_imagetype = strtoupper(str_replace('image/', '', strtolower($frame_mimetype)));
if ($frame_imagetype == 'JPEG') {
$frame_imagetype = 'JPG';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
} else {
$frame_offset += 3;
}
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] > 2) {
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_mimetype) === 0) {
$frame_mimetype = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
}
$frame_picturetype = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['imagetype'] = $frame_imagetype;
} else {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['mime'] = $frame_mimetype;
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['picturetypeid'] = $frame_picturetype;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['picturetype'] = APICPictureTypeLookup($frame_picturetype);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)));
include_once GETID3_INCLUDEPATH . 'getid3.getimagesize.php';
$imagechunkcheck = GetDataImageSize($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']);
if ($imagechunkcheck[2] >= 1 && $imagechunkcheck[2] <= 3) {
$imagetypes = array(1 => 'image/gif', 2 => 'image/jpeg', 3 => 'image/png');
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_mime'] = $imagetypes["{$imagechunkcheck[2]}"];
if ($imagechunkcheck[0]) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_width'] = $imagechunkcheck[0];
}
if ($imagechunkcheck[1]) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_height'] = $imagechunkcheck[1];
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['image_bytes'] = strlen($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data']);
//$MP3fileInfo['id3']['id3v2']["$frame_name"]["$frame_arrayindex"]['image_offset'] = $MP3fileInfo['id3']['id3v2']["$frame_name"]['dataoffset'] + $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)) + ID3v2HeaderLength($MP3fileInfo['id3']['id3v2']['majorversion']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'GEOB' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'GEO') {
// 4.16 GEO General encapsulated object
// There may be more than one 'GEOB' frame in each tag,
// but only one with the same content descriptor
// <Header for 'General encapsulated object', ID: 'GEOB'>
// Text encoding $xx
// MIME type <text string> $00
// Filename <text string according to encoding> $00 (00)
// Content description <text string according to encoding> $00 (00)
// Encapsulated object <binary data>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_mimetype) === 0) {
$frame_mimetype = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_filename = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_filename) === 0) {
$frame_filename = '';
}
$frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['objectdata'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['mime'] = $frame_mimetype;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['filename'] = $frame_filename;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
if (!isset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression']) || $MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags']['compression'] === FALSE) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding);
}
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'PCNT' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'CNT') {
// 4.17 CNT Play counter
// There may only be one 'PCNT' frame in each tag.
// When the counter reaches all one's, one byte is inserted in
// front of the counter thus making the counter eight bits bigger
// <Header for 'Play counter', ID: 'PCNT'>
// Counter $xx xx xx xx (xx ...)
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = BigEndian2Int($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'POPM' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'POP') {
// 4.18 POP Popularimeter
// There may be more than one 'POPM' frame in each tag,
// but only one with the same email address
// <Header for 'Popularimeter', ID: 'POPM'>
// Email to user <text string> $00
// Rating $xx
// Counter $xx xx xx xx (xx ...)
$frame_offset = 0;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_emailaddress = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_emailaddress) === 0) {
$frame_emailaddress = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$frame_rating = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['email'] = $frame_emailaddress;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['rating'] = $frame_rating;
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'RBUF' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'BUF') {
// 4.19 BUF Recommended buffer size
// There may only be one 'RBUF' frame in each tag
// <Header for 'Recommended buffer size', ID: 'RBUF'>
// Buffer size $xx xx xx
// Embedded info flag %0000000x
// Offset to next tag $xx xx xx xx
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['buffersize'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3));
$frame_offset += 3;
$frame_embeddedinfoflags = BigEndian2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']['embededinfo'] = (bool) substr($frame_embeddedinfoflags, 7, 1);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['nexttagoffset'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'CRM') {
// 4.20 Encrypted meta frame (ID3v2.2 only)
// There may be more than one 'CRM' frame in a tag,
// but only one with the same 'owner identifier'
// <Header for 'Encrypted meta frame', ID: 'CRM'>
// Owner identifier <textstring> $00 (00)
// Content/explanation <textstring> $00 (00)
// Encrypted datablock <binary data>
$frame_offset = 0;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = count($MP3fileInfo['id3']['id3v2']["{$frame_name}"]) - 1;
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'AENC' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'CRA') {
// 4.21 CRA Audio encryption
// There may be more than one 'AENC' frames in a tag,
// but only one with the same 'Owner identifier'
// <Header for 'Audio encryption', ID: 'AENC'>
// Owner identifier <text string> $00
// Preview start $xx xx
// Preview length $xx xx
// Encryption info <binary data>
$frame_offset = 0;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid == '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['previewstart'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['previewlength'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encryptioninfo'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_ownerid}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'LINK' || $MP3fileInfo['id3']['id3v2']['majorversion'] == 2 && $frame_name == 'LNK') {
// 4.22 LNK Linked information
// There may be more than one 'LINK' frame in a tag,
// but only one with the same contents
// <Header for 'Linked information', ID: 'LINK'>
// ID3v2.3+ => Frame identifier $xx xx xx xx
// ID3v2.2 => Frame identifier $xx xx xx
// URL <text string> $00
// ID and additional data <text string(s)>
$frame_offset = 0;
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['frameid'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3);
$frame_offset += 3;
} else {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['frameid'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4);
$frame_offset += 4;
}
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_url = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_url) === 0) {
$frame_url = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['url'] = $frame_url;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['additionaldata'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'POSS') {
// 4.21 POSS Position synchronisation frame (ID3v2.3+ only)
// There may only be one 'POSS' frame in each tag
// <Head for 'Position synchronisation', ID: 'POSS'>
// Time stamp format $xx
// Position $xx (xx ...)
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['timestampformat'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['position'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'USER') {
// 4.22 USER Terms of use (ID3v2.3+ only)
// There may be more than one 'Terms of use' frame in a tag,
// but only one with the same 'Language'
// <Header for 'Terms of use frame', ID: 'USER'>
// Text encoding $xx
// Language $xx xx xx
// The actual text <text string according to encoding>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_language = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 3);
$frame_offset += 3;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['language'] = $frame_language;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['languagename'] = LanguageLookup($frame_language, FALSE);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
if (!$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['flags']['compression']) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['asciidata'] = RoughTranslateUnicodeToASCII($MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['data'], $frame_textencoding);
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_language}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'OWNE') {
// 4.23 OWNE Ownership frame (ID3v2.3+ only)
// There may only be one 'OWNE' frame in a tag
// <Header for 'Ownership frame', ID: 'OWNE'>
// Text encoding $xx
// Price paid <text string> $00
// Date of purch. <text string>
// Seller <text string according to encoding>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_pricepaid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['currencyid'] = substr($frame_pricepaid, 0, 3);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['currency'] = LookupCurrency($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['currencyid'], 'units');
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['pricepaid']['value'] = substr($frame_pricepaid, 3);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 8);
if (!IsValidDateStampString($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'])) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedateunix'] = mktime(0, 0, 0, substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'], 4, 2), substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'], 6, 2), substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['purchasedate'], 0, 4));
}
$frame_offset += 8;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['seller'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'COMR') {
// 4.24 COMR Commercial frame (ID3v2.3+ only)
// There may be more than one 'commercial frame' in a tag,
// but no two may be identical
// <Header for 'Commercial frame', ID: 'COMR'>
// Text encoding $xx
// Price string <text string> $00
// Valid until <text string>
// Contact URL <text string> $00
// Received as $xx
// Name of seller <text string according to encoding> $00 (00)
// Description <text string according to encoding> $00 (00)
// Picture MIME type <string> $00
// Seller logo <binary data>
$frame_offset = 0;
$frame_textencoding = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_pricestring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$frame_rawpricearray = explode('/', $frame_pricestring);
foreach ($frame_rawpricearray as $key => $val) {
$frame_currencyid = substr($val, 0, 3);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['price']["{$frame_currencyid}"]['currency'] = LookupCurrency($frame_currencyid, 'units');
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['price']["{$frame_currencyid}"]['value'] = substr($val, 3);
}
$frame_datestring = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 8);
$frame_offset += 8;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_contacturl = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$frame_receivedasid = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_sellername = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_sellername) === 0) {
$frame_sellername = '';
}
$frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], TextEncodingLookup('terminator', $frame_textencoding), $frame_offset);
if (ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding)), 1)) === 0) {
$frame_terminatorpos++;
// strpos() fooled because 2nd byte of Unicode chars are often 0x00
}
$frame_description = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_description) === 0) {
$frame_description = '';
}
$frame_offset = $frame_terminatorpos + strlen(TextEncodingLookup('terminator', $frame_textencoding));
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_mimetype = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$frame_sellerlogo = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encodingid'] = $frame_textencoding;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['encoding'] = TextEncodingLookup('encoding', $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['pricevaliduntil'] = $frame_datestring;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['contacturl'] = $frame_contacturl;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['receivedasid'] = $frame_receivedasid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['receivedas'] = COMRReceivedAsLookup($frame_receivedasid);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['sellername'] = $frame_sellername;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciisellername'] = RoughTranslateUnicodeToASCII($frame_sellername, $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['description'] = $frame_description;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['asciidescription'] = RoughTranslateUnicodeToASCII($frame_description, $frame_textencoding);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['mime'] = $frame_mimetype;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['logo'] = $frame_sellerlogo;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'ENCR') {
// 4.25 ENCR Encryption method registration (ID3v2.3+ only)
// There may be several 'ENCR' frames in a tag,
// but only one containing the same symbol
// and only one containing the same owner identifier
// <Header for 'Encryption method registration', ID: 'ENCR'>
// Owner identifier <text string> $00
// Method symbol $xx
// Encryption data <binary data>
$frame_offset = 0;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['methodsymbol'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'GRID') {
// 4.26 GRID Group identification registration (ID3v2.3+ only)
// There may be several 'GRID' frames in a tag,
// but only one containing the same symbol
// and only one containing the same owner identifier
// <Header for 'Group ID registration', ID: 'GRID'>
// Owner identifier <text string> $00
// Group symbol $xx
// Group dependent data <binary data>
$frame_offset = 0;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['groupsymbol'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'PRIV') {
// 4.27 PRIV Private frame (ID3v2.3+ only)
// The tag may contain more than one 'PRIV' frame
// but only with different contents
// <Header for 'Private frame', ID: 'PRIV'>
// Owner identifier <text string> $00
// The private data <binary data>
$frame_offset = 0;
$frame_terminatorpos = strpos($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], chr(0), $frame_offset);
$frame_ownerid = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
if (ord($frame_ownerid) === 0) {
$frame_ownerid = '';
}
$frame_offset = $frame_terminatorpos + strlen(chr(0));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['ownerid'] = $frame_ownerid;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'SIGN') {
// 4.28 SIGN Signature frame (ID3v2.4+ only)
// There may be more than one 'signature frame' in a tag,
// but no two may be identical
// <Header for 'Signature frame', ID: 'SIGN'>
// Group symbol $xx
// Signature <binary data>
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['groupsymbol'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['data'] = substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['flags'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags'];
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['flags']);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['datalength'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]["{$frame_arrayindex}"]['dataoffset'] = $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'];
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'SEEK') {
// 4.29 SEEK Seek frame (ID3v2.4+ only)
// There may only be one 'seek frame' in a tag
// <Header for 'Seek frame', ID: 'SEEK'>
// Minimum offset to next tag $xx xx xx xx
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 4 && $frame_name == 'ASPI') {
// 4.30 ASPI Audio seek point index (ID3v2.4+ only)
// There may only be one 'audio seek point index' frame in a tag
// <Header for 'Seek Point Index', ID: 'ASPI'>
// Indexed data start (S) $xx xx xx xx
// Indexed data length (L) $xx xx xx xx
// Number of index points (N) $xx xx
// Bits per index point (b) $xx
// Then for every index point the following data is included:
// Fraction at index (Fi) $xx (xx)
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datastart'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$frame_offset += 4;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['indexeddatalength'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$frame_offset += 4;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['indexpoints'] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsperpoint'] = ord(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset++, 1));
$frame_bytesperpoint = ceil($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['bitsperpoint'] / 8);
for ($i = 0; $i < $frame_indexpoints; $i++) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['indexes']["{$i}"] = BigEndian2Int(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, $frame_bytesperpoint));
$frame_offset += $frame_bytesperpoint;
}
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] >= 3 && $frame_name == 'RGAD') {
// Replay Gain Adjustment
// http://privatewww.essex.ac.uk/~djmrob/replaygain/file_format_id3v2.html
// There may only be one 'RGAD' frame in a tag
// <Header for 'Replay Gain Adjustment', ID: 'RGAD'>
// Peak Amplitude $xx $xx $xx $xx
// Radio Replay Gain Adjustment %aaabbbcd %dddddddd
// Audiophile Replay Gain Adjustment %aaabbbcd %dddddddd
// a - name code
// b - originator code
// c - sign bit
// d - replay gain adjustment
$frame_offset = 0;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['peakamplitude'] = BigEndian2Float(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 4));
$frame_offset += 4;
$radioadjustment = Dec2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$audiophileadjustment = Dec2Bin(substr($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'], $frame_offset, 2));
$frame_offset += 2;
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['name'] = Bin2Dec(substr($radioadjustment, 0, 3));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['originator'] = Bin2Dec(substr($radioadjustment, 3, 3));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['signbit'] = Bin2Dec(substr($radioadjustment, 6, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['adjustment'] = Bin2Dec(substr($radioadjustment, 7, 9));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['name'] = Bin2Dec(substr($audiophileadjustment, 0, 3));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['originator'] = Bin2Dec(substr($audiophileadjustment, 3, 3));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['signbit'] = Bin2Dec(substr($audiophileadjustment, 6, 1));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['adjustment'] = Bin2Dec(substr($audiophileadjustment, 7, 9));
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['radio']['name'] = RGADnameLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['name']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['radio']['originator'] = RGADoriginatorLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['originator']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['radio']['adjustment'] = RGADadjustmentLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['adjustment'], $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['radio']['signbit']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['audiophile']['name'] = RGADnameLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['name']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['audiophile']['originator'] = RGADoriginatorLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['originator']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['audiophile']['adjustment'] = RGADadjustmentLookup($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['adjustment'], $MP3fileInfo['id3']['id3v2']["{$frame_name}"]['raw']['audiophile']['signbit']);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['framenamelong'] = FrameNameLongLookup($frame_name);
unset($MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data']);
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
return TRUE;
}
function EitherEndian2Int(&$ThisFileInfo, $byteword, $signed = false)
{
if ($ThisFileInfo['fileformat'] == 'riff') {
return LittleEndian2Int($byteword, $signed);
}
return BigEndian2Int($byteword, false, $signed);
}
function getVQFHeaderFilepointer(&$fd, &$ThisFileInfo)
{
// based loosely on code from TTwinVQ by Jurgen Faul
// jfaul@gmx.de http://jfaul.de/atl
$ThisFileInfo['fileformat'] = 'vqf';
$ThisFileInfo['audio']['dataformat'] = 'vqf';
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
$ThisFileInfo['audio']['lossless'] = false;
$HasVQFTags = false;
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$VQFheaderData = fread($fd, 16);
$offset = 0;
$ThisFileInfo['vqf']['raw']['header_tag'] = substr($VQFheaderData, $offset, 4);
$offset += 4;
$ThisFileInfo['vqf']['raw']['version'] = substr($VQFheaderData, $offset, 8);
$offset += 8;
$ThisFileInfo['vqf']['raw']['size'] = BigEndian2Int(substr($VQFheaderData, $offset, 4));
$offset += 4;
while (ftell($fd) < $ThisFileInfo['avdataend']) {
$ChunkBaseOffset = ftell($fd);
$chunkoffset = 0;
$ChunkData = fread($fd, 8);
$ChunkName = substr($ChunkData, $chunkoffset, 4);
if ($ChunkName == 'DATA') {
$ThisFileInfo['avdataoffset'] = $ChunkBaseOffset;
break;
}
$chunkoffset += 4;
$ChunkSize = BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
$chunkoffset += 4;
if ($ChunkSize > $ThisFileInfo['avdataend'] - ftell($fd)) {
$ThisFileInfo['error'] .= "\n" . 'Invalid chunk size (' . $ChunkSize . ') for chunk "' . $ChunkName . '" at offset ' . $ChunkBaseOffset;
break;
}
$ChunkData .= fread($fd, $ChunkSize);
switch ($ChunkName) {
case 'COMM':
$ThisFileInfo['vqf']["{$ChunkName}"]['channel_mode'] = BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
$chunkoffset += 4;
$ThisFileInfo['vqf']["{$ChunkName}"]['bitrate'] = BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
$chunkoffset += 4;
$ThisFileInfo['vqf']["{$ChunkName}"]['sample_rate'] = BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
$chunkoffset += 4;
$ThisFileInfo['vqf']["{$ChunkName}"]['security_level'] = BigEndian2Int(substr($ChunkData, $chunkoffset, 4));
$chunkoffset += 4;
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['vqf']["{$ChunkName}"]['channel_mode'] + 1;
$ThisFileInfo['audio']['sample_rate'] = VQFchannelFrequencyLookup($ThisFileInfo['vqf']["{$ChunkName}"]['sample_rate']);
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['vqf']["{$ChunkName}"]['bitrate'] * 1000;
if ($ThisFileInfo['audio']['bitrate'] == 0) {
$ThisFileInfo['error'] .= 'Corrupt VQF file: bitrate_audio == zero';
return false;
}
break;
case 'NAME':
case 'AUTH':
case '(c) ':
case 'FILE':
case 'COMT':
case 'ALBM':
$HasVQFTags = true;
$ThisFileInfo['vqf']['comments'][VQFcommentNiceNameLookup($ChunkName)][] = trim(substr($ChunkData, 8));
break;
case 'DSIZ':
$ThisFileInfo['vqf']['DSIZ'] = BigEndian2Int(substr($ChunkData, 8, 4));
break;
default:
$ThisFileInfo['warning'] .= "\n" . 'Unhandled chunk type "' . $ChunkName . '" at offset ' . $ChunkBaseOffset;
break;
}
}
$ThisFileInfo['playtime_seconds'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate'];
if (isset($ThisFileInfo['vqf']['DSIZ']) && $ThisFileInfo['vqf']['DSIZ'] != $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'] - strlen('DATA')) {
switch ($ThisFileInfo['vqf']['DSIZ']) {
case 0:
case 1:
$ThisFileInfo['warning'] .= "\n" . 'Invalid DSIZ value "' . $ThisFileInfo['vqf']['DSIZ'] . '". This is known to happen with VQF files encoded by Ahead Nero, and seems to be its way of saying this is TwinVQF v' . ($ThisFileInfo['vqf']['DSIZ'] + 1) . '.0';
$ThisFileInfo['audio']['encoder'] = 'Ahead Nero';
break;
default:
$ThisFileInfo['warning'] .= "\n" . 'Probable corrupted file - should be ' . $ThisFileInfo['vqf']['DSIZ'] . ' bytes, actually ' . ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'] - strlen('DATA'));
break;
}
}
// Any VQF tags present?
if ($HasVQFTags) {
// add tag to array of tags
$ThisFileInfo['tags'][] = 'vqf';
// Yank other comments - VQF highest preference
CopyFormatCommentsToRootComments($ThisFileInfo['vqf']['comments'], $ThisFileInfo, true, true, true);
}
return true;
}
function QuicktimeParseContainerAtom($atomdata, &$ThisFileInfo, $baseoffset, &$atomHierarchy)
{
$atomstructure = false;
$subatomoffset = 0;
$subatomcounter = 0;
if (strlen($atomdata) == 4 && BigEndian2Int($atomdata) == 0x0) {
return false;
}
while ($subatomoffset < strlen($atomdata)) {
$subatomsize = BigEndian2Int(substr($atomdata, $subatomoffset + 0, 4));
$subatomname = substr($atomdata, $subatomoffset + 4, 4);
$subatomdata = substr($atomdata, $subatomoffset + 8, $subatomsize - 8);
if ($subatomsize == 0) {
// Furthermore, for historical reasons the list of atoms is optionally
// terminated by a 32-bit integer set to 0. If you are writing a program
// to read user data atoms, you should allow for the terminating 0.
return $atomstructure;
}
$atomstructure[$subatomcounter] = QuicktimeParseAtom($subatomname, $subatomsize, $subatomdata, $ThisFileInfo, $baseoffset + $subatomoffset, $atomHierarchy);
$subatomoffset += $subatomsize;
$subatomcounter++;
}
return $atomstructure;
}
function FLACparseCUESHEET($METAdataBlockData, &$ThisFileInfo)
{
$offset = 0;
$ThisFileInfo['flac']['CUESHEET']['media_catalog_number'] = trim(substr($METAdataBlockData, $offset, 128), "");
$offset += 128;
$ThisFileInfo['flac']['CUESHEET']['lead_in_samples'] = BigEndian2Int(substr($METAdataBlockData, $offset, 8));
$offset += 8;
$ThisFileInfo['flac']['CUESHEET']['flags']['is_cd'] = (bool) (BigEndian2Int(substr($METAdataBlockData, $offset, 1)) & 0x80);
$offset += 1;
$offset += 258;
// reserved
$ThisFileInfo['flac']['CUESHEET']['number_tracks'] = BigEndian2Int(substr($METAdataBlockData, $offset, 1));
$offset += 1;
for ($track = 0; $track < $ThisFileInfo['flac']['CUESHEET']['number_tracks']; $track++) {
$TrackSampleOffset = BigEndian2Int(substr($METAdataBlockData, $offset, 8));
$offset += 8;
$TrackNumber = BigEndian2Int(substr($METAdataBlockData, $offset, 1));
$offset += 1;
$ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['sample_offset'] = $TrackSampleOffset;
$ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['isrc'] = substr($METAdataBlockData, $offset, 12);
$offset += 12;
$TrackFlagsRaw = BigEndian2Int(substr($METAdataBlockData, $offset, 1));
$offset += 1;
$ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['flags']['is_audio'] = (bool) ($TrackFlagsRaw & 0x80);
$ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['flags']['pre_emphasis'] = (bool) ($TrackFlagsRaw & 0x40);
$offset += 13;
// reserved
$ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['index_points'] = BigEndian2Int(substr($METAdataBlockData, $offset, 1));
$offset += 1;
for ($index = 0; $index < $ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['index_points']; $index++) {
$IndexSampleOffset = BigEndian2Int(substr($METAdataBlockData, $offset, 8));
$offset += 8;
$IndexNumber = BigEndian2Int(substr($METAdataBlockData, $offset, 8));
$offset += 1;
$offset += 3;
// reserved
$ThisFileInfo['flac']['CUESHEET']['tracks'][$TrackNumber]['indexes'][$IndexNumber] = $IndexSampleOffset;
}
}
return true;
}
function getMPEGHeaderFilepointer(&$fd, &$ThisFileInfo)
{
$ThisFileInfo['fileformat'] = 'mpeg';
// Start code 32 bits
// horizontal frame size 12 bits
// vertical frame size 12 bits
// pixel aspect ratio 4 bits
// frame rate 4 bits
// bitrate 18 bits
// marker bit 1 bit
// VBV buffer size 10 bits
// constrained parameter flag 1 bit
// intra quant. matrix flag 1 bit
// intra quant. matrix values 512 bits (present if matrix flag == 1)
// non-intra quant. matrix flag 1 bit
// non-intra quant. matrix values 512 bits (present if matrix flag == 1)
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$MPEGvideoHeader = fread($fd, FREAD_BUFFER_SIZE);
$offset = 0;
// MPEG video information is found as $00 $00 $01 $B3
$matching_pattern = chr(0x0) . chr(0x0) . chr(0x1) . chr(0xb3);
while (substr($MPEGvideoHeader, $offset++, 4) !== $matching_pattern) {
if ($offset >= strlen($MPEGvideoHeader) - 12) {
$MPEGvideoHeader .= fread($fd, FREAD_BUFFER_SIZE);
$MPEGvideoHeader = substr($MPEGvideoHeader, $offset);
$offset = 0;
if (strlen($MPEGvideoHeader) < 12) {
$ThisFileInfo['error'] .= "\n" . 'Could not find start of video block before end of file';
unset($ThisFileInfo['fileformat']);
return false;
} elseif (ftell($fd) >= 100000) {
$ThisFileInfo['error'] .= "\n" . 'Could not find start of video block in the first 100,000 bytes (this might not be an MPEG-video file?)';
unset($ThisFileInfo['fileformat']);
return false;
}
}
}
$ThisFileInfo['video']['dataformat'] = 'mpeg';
$offset += strlen($matching_pattern) - 1;
$FrameSizeAspectRatioFrameRateDWORD = BigEndian2Int(substr($MPEGvideoHeader, $offset, 4));
$offset += 4;
$assortedinformation = BigEndian2Int(substr($MPEGvideoHeader, $offset, 4));
$offset += 4;
$ThisFileInfo['mpeg']['video']['raw']['framesize_horizontal'] = ($FrameSizeAspectRatioFrameRateDWORD & 4293918720.0) >> 20;
// 12 bits for horizontal frame size
$ThisFileInfo['mpeg']['video']['raw']['framesize_vertical'] = ($FrameSizeAspectRatioFrameRateDWORD & 0xfff00) >> 8;
// 12 bits for vertical frame size
$ThisFileInfo['mpeg']['video']['raw']['pixel_aspect_ratio'] = ($FrameSizeAspectRatioFrameRateDWORD & 0xf0) >> 4;
$ThisFileInfo['mpeg']['video']['raw']['frame_rate'] = $FrameSizeAspectRatioFrameRateDWORD & 0xf;
$ThisFileInfo['mpeg']['video']['framesize_horizontal'] = $ThisFileInfo['mpeg']['video']['raw']['framesize_horizontal'];
$ThisFileInfo['mpeg']['video']['framesize_vertical'] = $ThisFileInfo['mpeg']['video']['raw']['framesize_vertical'];
$ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['mpeg']['video']['framesize_horizontal'];
$ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['mpeg']['video']['framesize_vertical'];
$ThisFileInfo['mpeg']['video']['pixel_aspect_ratio'] = MPEGvideoAspectRatioLookup($ThisFileInfo['mpeg']['video']['raw']['pixel_aspect_ratio']);
$ThisFileInfo['mpeg']['video']['pixel_aspect_ratio_text'] = MPEGvideoAspectRatioTextLookup($ThisFileInfo['mpeg']['video']['raw']['pixel_aspect_ratio']);
$ThisFileInfo['mpeg']['video']['frame_rate'] = MPEGvideoFramerateLookup($ThisFileInfo['mpeg']['video']['raw']['frame_rate']);
$ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['mpeg']['video']['frame_rate'];
$ThisFileInfo['mpeg']['video']['raw']['bitrate'] = ($assortedinformation & 4294950912.0) >> 14;
$ThisFileInfo['mpeg']['video']['raw']['marker_bit'] = ($assortedinformation & 0x2000) >> 13;
$ThisFileInfo['mpeg']['video']['raw']['vbv_buffer_size'] = ($assortedinformation & 0x1ff8) >> 3;
$ThisFileInfo['mpeg']['video']['raw']['constrained_param_flag'] = ($assortedinformation & 0x4) >> 2;
$ThisFileInfo['mpeg']['video']['raw']['intra_quant_flag'] = ($assortedinformation & 0x2) >> 1;
if ($ThisFileInfo['mpeg']['video']['raw']['bitrate'] == 0x3ffff) {
// 18 set bits
$ThisFileInfo['mpeg']['video']['bitrate_type'] = 'variable';
$ThisFileInfo['bitrate_mode'] = 'vbr';
} else {
$ThisFileInfo['mpeg']['video']['bitrate'] = $ThisFileInfo['mpeg']['video']['raw']['bitrate'] * 400;
$ThisFileInfo['mpeg']['video']['bitrate_mode'] = 'cbr';
$ThisFileInfo['video']['bitrate_mode'] = $ThisFileInfo['mpeg']['video']['bitrate_mode'];
$ThisFileInfo['video']['bitrate'] = $ThisFileInfo['mpeg']['video']['bitrate'];
}
$ThisFileInfo['video']['bitrate_mode'] = $ThisFileInfo['mpeg']['video']['bitrate_mode'];
$ThisFileInfo['video']['bitrate'] = $ThisFileInfo['mpeg']['video']['bitrate'];
return true;
}
function read_int($fp, $offset, $filelen, $path)
{
return BigEndian2Int(read_chunk($fp, $offset, $filelen, $path, 4));
}
function getID3v2Filepointer(&$fd, &$ThisFileInfo)
{
// Overall tag structure:
// +-----------------------------+
// | Header (10 bytes) |
// +-----------------------------+
// | Extended Header |
// | (variable length, OPTIONAL) |
// +-----------------------------+
// | Frames (variable length) |
// +-----------------------------+
// | Padding |
// | (variable length, OPTIONAL) |
// +-----------------------------+
// | Footer (10 bytes, OPTIONAL) |
// +-----------------------------+
// Header
// ID3v2/file identifier "ID3"
// ID3v2 version $04 00
// ID3v2 flags (%ab000000 in v2.2, %abc00000 in v2.3, %abcd0000 in v2.4.x)
// ID3v2 size 4 * %0xxxxxxx
rewind($fd);
$header = fread($fd, 10);
if (substr($header, 0, 3) == 'ID3') {
$ThisFileInfo['id3v2']['header'] = true;
$ThisFileInfo['id3v2']['majorversion'] = ord($header[3]);
$ThisFileInfo['id3v2']['minorversion'] = ord($header[4]);
} else {
return false;
}
if ($ThisFileInfo['id3v2']['majorversion'] > 4) {
// this script probably won't correctly parse ID3v2.5.x and above.
$ThisFileInfo['error'] .= "\n" . 'this script only parses up to ID3v2.4.x - this tag is ID3v2.' . $ThisFileInfo['id3v2']['majorversion'] . '.' . $ThisFileInfo['id3v2']['minorversion'];
return false;
}
$id3_flags = BigEndian2Bin($header[5]);
switch ($ThisFileInfo['id3v2']['majorversion']) {
case 2:
// %ab000000 in v2.2
$ThisFileInfo['id3v2']['flags']['unsynch'] = $id3_flags[0];
// a - Unsynchronisation
$ThisFileInfo['id3v2']['flags']['compression'] = $id3_flags[1];
// b - Compression
break;
case 3:
// %abc00000 in v2.3
$ThisFileInfo['id3v2']['flags']['unsynch'] = $id3_flags[0];
// a - Unsynchronisation
$ThisFileInfo['id3v2']['flags']['exthead'] = $id3_flags[1];
// b - Extended header
$ThisFileInfo['id3v2']['flags']['experim'] = $id3_flags[2];
// c - Experimental indicator
break;
case 4:
// %abcd0000 in v2.4
$ThisFileInfo['id3v2']['flags']['unsynch'] = $id3_flags[0];
// a - Unsynchronisation
$ThisFileInfo['id3v2']['flags']['exthead'] = $id3_flags[1];
// b - Extended header
$ThisFileInfo['id3v2']['flags']['experim'] = $id3_flags[2];
// c - Experimental indicator
$ThisFileInfo['id3v2']['flags']['isfooter'] = $id3_flags[3];
// d - Footer present
break;
}
$ThisFileInfo['id3v2']['headerlength'] = BigEndian2Int(substr($header, 6, 4), 1) + ID3v2HeaderLength($ThisFileInfo['id3v2']['majorversion']);
// Extended Header
if (isset($ThisFileInfo['id3v2']['flags']['exthead']) && $ThisFileInfo['id3v2']['flags']['exthead']) {
// Extended header size 4 * %0xxxxxxx
// Number of flag bytes $01
// Extended Flags $xx
// Where the 'Extended header size' is the size of the whole extended header, stored as a 32 bit synchsafe integer.
$extheader = fread($fd, 4);
$ThisFileInfo['id3v2']['extheaderlength'] = BigEndian2Int($extheader, 1);
// The extended flags field, with its size described by 'number of flag bytes', is defined as:
// %0bcd0000
// b - Tag is an update
// Flag data length $00
// c - CRC data present
// Flag data length $05
// Total frame CRC 5 * %0xxxxxxx
// d - Tag restrictions
// Flag data length $01
$extheaderflagbytes = fread($fd, 1);
$extheaderflags = fread($fd, $extheaderflagbytes);
$id3_exthead_flags = BigEndian2Bin(substr($header, 5, 1));
$ThisFileInfo['id3v2']['exthead_flags']['update'] = substr($id3_exthead_flags, 1, 1);
$ThisFileInfo['id3v2']['exthead_flags']['CRC'] = substr($id3_exthead_flags, 2, 1);
if ($ThisFileInfo['id3v2']['exthead_flags']['CRC']) {
$extheaderrawCRC = fread($fd, 5);
$ThisFileInfo['id3v2']['exthead_flags']['CRC'] = BigEndian2Int($extheaderrawCRC, 1);
}
$ThisFileInfo['id3v2']['exthead_flags']['restrictions'] = substr($id3_exthead_flags, 3, 1);
if ($ThisFileInfo['id3v2']['exthead_flags']['restrictions']) {
// Restrictions %ppqrrstt
$extheaderrawrestrictions = fread($fd, 1);
$ThisFileInfo['id3v2']['exthead_flags']['restrictions_tagsize'] = (bindec('11000000') & ord($extheaderrawrestrictions)) >> 6;
// p - Tag size restrictions
$ThisFileInfo['id3v2']['exthead_flags']['restrictions_textenc'] = (bindec('00100000') & ord($extheaderrawrestrictions)) >> 5;
// q - Text encoding restrictions
$ThisFileInfo['id3v2']['exthead_flags']['restrictions_textsize'] = (bindec('00011000') & ord($extheaderrawrestrictions)) >> 3;
// r - Text fields size restrictions
$ThisFileInfo['id3v2']['exthead_flags']['restrictions_imgenc'] = (bindec('00000100') & ord($extheaderrawrestrictions)) >> 2;
// s - Image encoding restrictions
$ThisFileInfo['id3v2']['exthead_flags']['restrictions_imgsize'] = (bindec('00000011') & ord($extheaderrawrestrictions)) >> 0;
// t - Image size restrictions
}
}
// end extended header
// Frames
// All ID3v2 frames consists of one frame header followed by one or more
// fields containing the actual information. The header is always 10
// bytes and laid out as follows:
//
// Frame ID $xx xx xx xx (four characters)
// Size 4 * %0xxxxxxx
// Flags $xx xx
$sizeofframes = $ThisFileInfo['id3v2']['headerlength'] - ID3v2HeaderLength($ThisFileInfo['id3v2']['majorversion']);
if (isset($ThisFileInfo['id3v2']['extheaderlength'])) {
$sizeofframes -= $ThisFileInfo['id3v2']['extheaderlength'];
}
if (isset($ThisFileInfo['id3v2']['flags']['isfooter']) && $ThisFileInfo['id3v2']['flags']['isfooter']) {
$sizeofframes -= 10;
// footer takes last 10 bytes of ID3v2 header, after frame data, before audio
}
if ($sizeofframes > 0) {
$framedata = fread($fd, $sizeofframes);
// read all frames from file into $framedata variable
// if entire frame data is unsynched, de-unsynch it now (ID3v2.3.x)
if (isset($ThisFileInfo['id3v2']['flags']['unsynch']) && $ThisFileInfo['id3v2']['flags']['unsynch'] && $ThisFileInfo['id3v2']['majorversion'] <= 3) {
$framedata = DeUnSynchronise($framedata);
}
// [in ID3v2.4.0] Unsynchronisation [S:6.1] is done on frame level, instead
// of on tag level, making it easier to skip frames, increasing the streamability
// of the tag. The unsynchronisation flag in the header [S:3.1] indicates that
// there exists an unsynchronised frame, while the new unsynchronisation flag in
// the frame header [S:4.1.2] indicates unsynchronisation.
$framedataoffset = 10;
// how many bytes into the stream - start from after the 10-byte header
while (isset($framedata) && strlen($framedata) > 0) {
// cycle through until no more frame data is left to parse
if (strlen($framedata) < ID3v2HeaderLength($ThisFileInfo['id3v2']['majorversion'])) {
// insufficient room left in ID3v2 header for actual data - must be padding
$ThisFileInfo['id3v2']['padding']['start'] = $framedataoffset;
$ThisFileInfo['id3v2']['padding']['length'] = strlen($framedata);
$ThisFileInfo['id3v2']['padding']['valid'] = true;
for ($i = 0; $i < $ThisFileInfo['id3v2']['padding']['length']; $i++) {
if (substr($framedata, $i, 1) != chr(0)) {
$ThisFileInfo['id3v2']['padding']['valid'] = false;
$ThisFileInfo['id3v2']['padding']['errorpos'] = $ThisFileInfo['id3v2']['padding']['start'] + $i;
$ThisFileInfo['warning'] .= "\n" . 'Invalid ID3v2 padding found at offset ' . $ThisFileInfo['id3v2']['padding']['errorpos'];
break;
}
}
break;
// skip rest of ID3v2 header
}
if ($ThisFileInfo['id3v2']['majorversion'] == 2) {
// Frame ID $xx xx xx (three characters)
// Size $xx xx xx (24-bit integer)
// Flags $xx xx
$frame_header = substr($framedata, 0, 6);
// take next 6 bytes for header
$framedata = substr($framedata, 6);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 3);
$frame_size = BigEndian2Int(substr($frame_header, 3, 3), 0);
$frame_flags = '';
// not used for anything, just to avoid E_NOTICEs
} elseif ($ThisFileInfo['id3v2']['majorversion'] > 2) {
// Frame ID $xx xx xx xx (four characters)
// Size $xx xx xx xx (32-bit integer in v2.3, 28-bit synchsafe in v2.4+)
// Flags $xx xx
$frame_header = substr($framedata, 0, 10);
// take next 10 bytes for header
$framedata = substr($framedata, 10);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 4);
if ($ThisFileInfo['id3v2']['majorversion'] == 3) {
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
} else {
// ID3v2.4+
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 1);
// 32-bit synchsafe integer (28-bit value)
}
if ($frame_size < strlen($framedata) + 4) {
$nextFrameID = substr($framedata, $frame_size, 4);
if (IsValidID3v2FrameName($nextFrameID, $ThisFileInfo['id3v2']['majorversion'])) {
// next frame is OK
} elseif ($frame_name == chr(0) . 'MP3' || $frame_name == chr(0) . chr(0) . 'MP' || $frame_name == ' MP3' || $frame_name == 'MP3e') {
// MP3ext known broken frames - "ok" for the purposes of this test
} elseif ($ThisFileInfo['id3v2']['majorversion'] == 4 && IsValidID3v2FrameName(substr($framedata, BigEndian2Int(substr($frame_header, 4, 4), 0), 4), 3)) {
$ThisFileInfo['warning'] .= "\n" . 'ID3v2 tag written as ID3v2.4, but with non-synchsafe integers (ID3v2.3 style). Older versions of Helium2 (www.helium2.com) is a known culprit of this. Tag has been parsed as ID3v2.3';
$ThisFileInfo['id3v2']['majorversion'] = 3;
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
}
}
$frame_flags = BigEndian2Bin(substr($frame_header, 8, 2));
}
if ($ThisFileInfo['id3v2']['majorversion'] == 2 && $frame_name == chr(0) . chr(0) . chr(0) || $frame_name == chr(0) . chr(0) . chr(0) . chr(0)) {
// padding encountered
$ThisFileInfo['id3v2']['padding']['start'] = $framedataoffset;
$ThisFileInfo['id3v2']['padding']['length'] = strlen($framedata);
$ThisFileInfo['id3v2']['padding']['valid'] = true;
for ($i = 0; $i < $ThisFileInfo['id3v2']['padding']['length']; $i++) {
if (substr($framedata, $i, 1) != chr(0)) {
$ThisFileInfo['id3v2']['padding']['valid'] = false;
$ThisFileInfo['id3v2']['padding']['errorpos'] = $ThisFileInfo['id3v2']['padding']['start'] + $i;
$ThisFileInfo['warning'] .= "\n" . 'Invalid ID3v2 padding found at offset ' . $ThisFileInfo['id3v2']['padding']['errorpos'];
break;
}
}
break;
// skip rest of ID3v2 header
}
if ($frame_name == 'COM ') {
$ThisFileInfo['warning'] .= "\n" . 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $ThisFileInfo['id3v2']['majorversion'] . ' tag). (ERROR: !IsValidID3v2FrameName("' . str_replace(chr(0), ' ', $frame_name) . '", ' . $ThisFileInfo['id3v2']['majorversion'] . '))). [Note: this particular error has been known to happen with tags edited by iTunes (versions "X v2.0.3", "v3.0.1" are known-guilty, probably others too)]';
$frame_name = 'COMM';
}
if ($frame_size <= strlen($framedata) && IsValidID3v2FrameName($frame_name, $ThisFileInfo['id3v2']['majorversion'])) {
$ThisFileInfo['id3v2']["{$frame_name}"]['data'] = substr($framedata, 0, $frame_size);
$ThisFileInfo['id3v2']["{$frame_name}"]['datalength'] = CastAsInt($frame_size);
$ThisFileInfo['id3v2']["{$frame_name}"]['dataoffset'] = $framedataoffset;
$framedata = substr($framedata, $frame_size);
// in getid3.frames.php - this function does all the FrameID-level parsing
ID3v2FrameProcessing($frame_name, $frame_flags, $ThisFileInfo);
} else {
// invalid frame length or FrameID
if ($frame_size <= strlen($framedata)) {
if (IsValidID3v2FrameName(substr($framedata, $frame_size, 4), $ThisFileInfo['id3v2']['majorversion'])) {
// next frame is valid, just skip the current frame
$framedata = substr($framedata, $frame_size);
$InvalidFrameMessageType = 'warning';
$InvalidFrameMessageText = ' Next frame is valid, skipping current frame.';
} else {
// next frame is invalid too, abort processing
unset($framedata);
$InvalidFrameMessageType = 'error';
$InvalidFrameMessageText = ' Next frame is also invalid, aborting processing.';
}
} elseif ($frame_size == strlen($framedata)) {
// this is the last frame, just skip
$InvalidFrameMessageType = 'warning';
$InvalidFrameMessageText = ' This was the last frame.';
} else {
// next frame is invalid too, abort processing
unset($framedata);
$InvalidFrameMessageType = 'error';
$InvalidFrameMessageText = ' Invalid frame size, aborting.';
}
if (!IsValidID3v2FrameName($frame_name, $ThisFileInfo['id3v2']['majorversion'])) {
switch ($frame_name) {
case chr(0) . chr(0) . 'MP':
case chr(0) . 'MP3':
case ' MP3':
case 'MP3e':
case chr(0) . 'MP':
case ' MP':
case 'MP3':
$InvalidFrameMessageType = 'warning';
$ThisFileInfo["{$InvalidFrameMessageType}"] .= "\n" . 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $ThisFileInfo['id3v2']['majorversion'] . ' tag). (ERROR: !IsValidID3v2FrameName("' . str_replace(chr(0), ' ', $frame_name) . '", ' . $ThisFileInfo['id3v2']['majorversion'] . '))). [Note: this particular error has been known to happen with tags edited by "MP3ext (www.mutschler.de/mp3ext/)"]';
break;
default:
$ThisFileInfo["{$InvalidFrameMessageType}"] .= "\n" . 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $ThisFileInfo['id3v2']['majorversion'] . ' tag). (ERROR: !IsValidID3v2FrameName("' . str_replace(chr(0), ' ', $frame_name) . '", ' . $ThisFileInfo['id3v2']['majorversion'] . '))).';
break;
}
} elseif ($frame_size > strlen($framedata)) {
$ThisFileInfo["{$InvalidFrameMessageType}"] .= "\n" . 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $ThisFileInfo['id3v2']['majorversion'] . ' tag). (ERROR: $frame_size (' . $frame_size . ') > strlen($framedata) (' . strlen($framedata) . ')).';
} else {
$ThisFileInfo["{$InvalidFrameMessageType}"] .= "\n" . 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $ThisFileInfo['id3v2']['majorversion'] . ' tag).';
}
$ThisFileInfo["{$InvalidFrameMessageType}"] .= $InvalidFrameMessageText;
}
$framedataoffset += $frame_size + ID3v2HeaderLength($ThisFileInfo['id3v2']['majorversion']);
}
}
// Footer
// The footer is a copy of the header, but with a different identifier.
// ID3v2 identifier "3DI"
// ID3v2 version $04 00
// ID3v2 flags %abcd0000
// ID3v2 size 4 * %0xxxxxxx
if (isset($ThisFileInfo['id3v2']['flags']['isfooter']) && $ThisFileInfo['id3v2']['flags']['isfooter']) {
$footer = fread($fd, 10);
if (substr($footer, 0, 3) == '3DI') {
$ThisFileInfo['id3v2']['footer'] = true;
$ThisFileInfo['id3v2']['majorversion_footer'] = ord(substr($footer, 3, 1));
$ThisFileInfo['id3v2']['minorversion_footer'] = ord(substr($footer, 4, 1));
}
if ($ThisFileInfo['id3v2']['majorversion_footer'] <= 4) {
$id3_flags = BigEndian2Bin(substr($footer, 5, 1));
$ThisFileInfo['id3v2']['flags']['unsynch_footer'] = substr($id3_flags, 0, 1);
$ThisFileInfo['id3v2']['flags']['extfoot_footer'] = substr($id3_flags, 1, 1);
$ThisFileInfo['id3v2']['flags']['experim_footer'] = substr($id3_flags, 2, 1);
$ThisFileInfo['id3v2']['flags']['isfooter_footer'] = substr($id3_flags, 3, 1);
$ThisFileInfo['id3v2']['footerlength'] = BigEndian2Int(substr($footer, 6, 4), 1);
}
}
// end footer
if (isset($ThisFileInfo['id3v2']['comments']['genre'])) {
foreach ($ThisFileInfo['id3v2']['comments']['genre'] as $key => $value) {
unset($ThisFileInfo['id3v2']['comments']['genre'][$key]);
$ThisFileInfo['id3v2']['comments'] = array_merge_noclobber($ThisFileInfo['id3v2']['comments'], ParseID3v2GenreString($value));
}
}
if (isset($ThisFileInfo['id3v2']['comments']['track'])) {
foreach ($ThisFileInfo['id3v2']['comments']['track'] as $key => $value) {
if (strstr($value, '/')) {
list($ThisFileInfo['id3v2']['comments']['track'][$key], $ThisFileInfo['id3v2']['comments']['totaltracks'][$key]) = explode('/', $ThisFileInfo['id3v2']['comments']['track'][$key]);
}
// Convert track number to integer (ID3v2 track numbers could be returned as a
// string ('03' for example) - this will ensure all track numbers are integers
$ThisFileInfo['id3v2']['comments']['track'][$key] = intval($ThisFileInfo['id3v2']['comments']['track'][$key]);
}
}
return true;
}
function getMPEGHeaderFilepointer(&$fd, &$ThisFileInfo)
{
$ThisFileInfo['fileformat'] = 'mpeg';
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$MPEGstreamData = fread($fd, min(100000, $ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']));
$MPEGstreamDataLength = strlen($MPEGstreamData);
$foundVideo = true;
$VideoChunkOffset = 0;
while (substr($MPEGstreamData, $VideoChunkOffset++, 4) !== MPEG_VIDEO_SEQUENCE_HEADER) {
if ($VideoChunkOffset >= $MPEGstreamDataLength) {
$foundVideo = false;
break 2;
}
}
if ($foundVideo) {
// Start code 32 bits
// horizontal frame size 12 bits
// vertical frame size 12 bits
// pixel aspect ratio 4 bits
// frame rate 4 bits
// bitrate 18 bits
// marker bit 1 bit
// VBV buffer size 10 bits
// constrained parameter flag 1 bit
// intra quant. matrix flag 1 bit
// intra quant. matrix values 512 bits (present if matrix flag == 1)
// non-intra quant. matrix flag 1 bit
// non-intra quant. matrix values 512 bits (present if matrix flag == 1)
$ThisFileInfo['video']['dataformat'] = 'mpeg';
// I don't know how to differentiate between MPEG-1 and MPEG-2 video stream
// Any information appreciated: info@getid3.org
//$ThisFileInfo['video']['codec'] = 'MPEG-1';
//$ThisFileInfo['video']['codec'] = 'MPEG-2';
$ThisFileInfo['video']['codec'] = 'MPEG';
$VideoChunkOffset += strlen(MPEG_VIDEO_SEQUENCE_HEADER) - 1;
$FrameSizeDWORD = BigEndian2Int(substr($MPEGstreamData, $VideoChunkOffset, 3));
$VideoChunkOffset += 3;
$AspectRatioFrameRateDWORD = BigEndian2Int(substr($MPEGstreamData, $VideoChunkOffset, 1));
$VideoChunkOffset += 1;
$assortedinformation = BigEndian2Bin(substr($MPEGstreamData, $VideoChunkOffset, 4));
$VideoChunkOffset += 4;
$ThisFileInfo['mpeg']['video']['raw']['framesize_horizontal'] = ($FrameSizeDWORD & 0xfff000) >> 12;
// 12 bits for horizontal frame size
$ThisFileInfo['mpeg']['video']['raw']['framesize_vertical'] = $FrameSizeDWORD & 0xfff;
// 12 bits for vertical frame size
$ThisFileInfo['mpeg']['video']['raw']['pixel_aspect_ratio'] = ($AspectRatioFrameRateDWORD & 0xf0) >> 4;
$ThisFileInfo['mpeg']['video']['raw']['frame_rate'] = $AspectRatioFrameRateDWORD & 0xf;
$ThisFileInfo['mpeg']['video']['framesize_horizontal'] = $ThisFileInfo['mpeg']['video']['raw']['framesize_horizontal'];
$ThisFileInfo['mpeg']['video']['framesize_vertical'] = $ThisFileInfo['mpeg']['video']['raw']['framesize_vertical'];
$ThisFileInfo['mpeg']['video']['pixel_aspect_ratio'] = MPEGvideoAspectRatioLookup($ThisFileInfo['mpeg']['video']['raw']['pixel_aspect_ratio']);
$ThisFileInfo['mpeg']['video']['pixel_aspect_ratio_text'] = MPEGvideoAspectRatioTextLookup($ThisFileInfo['mpeg']['video']['raw']['pixel_aspect_ratio']);
$ThisFileInfo['mpeg']['video']['frame_rate'] = MPEGvideoFramerateLookup($ThisFileInfo['mpeg']['video']['raw']['frame_rate']);
$ThisFileInfo['mpeg']['video']['raw']['bitrate'] = Bin2Dec(substr($assortedinformation, 0, 18));
$ThisFileInfo['mpeg']['video']['raw']['marker_bit'] = Bin2Dec(substr($assortedinformation, 18, 1));
$ThisFileInfo['mpeg']['video']['raw']['vbv_buffer_size'] = Bin2Dec(substr($assortedinformation, 19, 10));
$ThisFileInfo['mpeg']['video']['raw']['constrained_param_flag'] = Bin2Dec(substr($assortedinformation, 29, 1));
$ThisFileInfo['mpeg']['video']['raw']['intra_quant_flag'] = Bin2Dec(substr($assortedinformation, 30, 1));
if ($ThisFileInfo['mpeg']['video']['raw']['bitrate'] == 0x3ffff) {
// 18 set bits
$ThisFileInfo['warning'] .= "\n" . 'This version of getID3() [' . GETID3VERSION . '] cannot determine average bitrate of VBR MPEG video files';
$ThisFileInfo['mpeg']['video']['bitrate_mode'] = 'vbr';
} else {
$ThisFileInfo['mpeg']['video']['bitrate'] = $ThisFileInfo['mpeg']['video']['raw']['bitrate'] * 400;
$ThisFileInfo['mpeg']['video']['bitrate_mode'] = 'cbr';
$ThisFileInfo['video']['bitrate'] = $ThisFileInfo['mpeg']['video']['bitrate'];
}
$ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['mpeg']['video']['framesize_horizontal'];
$ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['mpeg']['video']['framesize_vertical'];
$ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['mpeg']['video']['frame_rate'];
$ThisFileInfo['video']['bitrate_mode'] = $ThisFileInfo['mpeg']['video']['bitrate_mode'];
$ThisFileInfo['video']['lossless'] = false;
$ThisFileInfo['video']['bits_per_sample'] = 24;
} else {
$ThisFileInfo['error'] .= "\n" . 'Could not find start of video block in the first 100,000 bytes (or before end of file) - this might not be an MPEG-video file?';
}
$AudioChunkOffset = 0;
while (true) {
while (substr($MPEGstreamData, $AudioChunkOffset++, 4) !== MPEG_AUDIO_START) {
if ($AudioChunkOffset >= $MPEGstreamDataLength) {
break 2;
}
}
require_once GETID3_INCLUDEPATH . 'getid3.mp3.php';
for ($i = 0; $i <= 2; $i++) {
// some files have the MPEG-audio header 8 bytes after the end of the $00 $00 $01 $C0 signature, some have it 9 bytes, some 10 bytes after
// I have no idea why or what the difference is, so this is a stupid hack.
// If anybody has any better idea of what's going on, please let me know - info@getid3.org
$dummy = $ThisFileInfo;
if (decodeMPEGaudioHeader($fd, $AudioChunkOffset + 3 + 8 + $i, $dummy, false)) {
$ThisFileInfo = $dummy;
$ThisFileInfo['audio']['bits_per_sample'] = 16;
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
$ThisFileInfo['audio']['lossless'] = false;
break 2;
}
}
}
return true;
}
function FixedPoint16_16($rawdata)
{
return BigEndian2Int(substr($rawdata, 0, 2)) + (double) (BigEndian2Int(substr($rawdata, 2, 2)) / pow(2, 16));
}
function getRealHeaderFilepointer(&$fd, &$ThisFileInfo)
{
$ThisFileInfo['fileformat'] = 'real';
$ThisFileInfo['bitrate'] = 0;
$ThisFileInfo['playtime_seconds'] = 0;
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$ChunkCounter = 0;
while (ftell($fd) < $ThisFileInfo['avdataend']) {
$ChunkData = fread($fd, 8);
$ChunkName = substr($ChunkData, 0, 4);
$ChunkSize = BigEndian2Int(substr($ChunkData, 4, 4));
$ThisFileInfo['real']['chunks'][$ChunkCounter]['name'] = $ChunkName;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['offset'] = ftell($fd) - 8;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['length'] = $ChunkSize;
$ChunkData .= fread($fd, $ChunkSize - 8);
$offset = 8;
switch ($ChunkName) {
case '.RMF':
// RealMedia File Header
$ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
switch ($ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version']) {
case 0:
$ThisFileInfo['real']['chunks'][$ChunkCounter]['file_version'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['headers_count'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
break;
default:
//$ThisFileInfo['warning'] .= "\n".'Expected .RMF-object_version to be "0", actual value is "'.$ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'].'" (should not be a problem)';
break;
}
break;
case 'PROP':
// Properties Header
$ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] == 0) {
$ThisFileInfo['real']['chunks'][$ChunkCounter]['max_bit_rate'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_bit_rate'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['max_packet_size'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_packet_size'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['num_packets'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['duration'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['preroll'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['index_offset'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['data_offset'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['num_streams'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['flags_raw'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['playtime_seconds'] = $ThisFileInfo['real']['chunks'][$ChunkCounter]['duration'] / 1000;
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['duration'] > 0) {
$ThisFileInfo['bitrate'] += $ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_bit_rate'];
}
$ThisFileInfo['real']['chunks'][$ChunkCounter]['flags']['save_enabled'] = (bool) ($ThisFileInfo['real']['chunks'][$ChunkCounter]['flags_raw'] & 0x1);
$ThisFileInfo['real']['chunks'][$ChunkCounter]['flags']['perfect_play'] = (bool) ($ThisFileInfo['real']['chunks'][$ChunkCounter]['flags_raw'] & 0x2);
$ThisFileInfo['real']['chunks'][$ChunkCounter]['flags']['live_broadcast'] = (bool) ($ThisFileInfo['real']['chunks'][$ChunkCounter]['flags_raw'] & 0x4);
}
break;
case 'MDPR':
// Media Properties Header
$ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] == 0) {
$ThisFileInfo['real']['chunks'][$ChunkCounter]['stream_number'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['max_bit_rate'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_bit_rate'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['max_packet_size'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_packet_size'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['start_time'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['preroll'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['duration'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['stream_name_size'] = BigEndian2Int(substr($ChunkData, $offset, 1));
$offset += 1;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['stream_name'] = substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['stream_name_size']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['stream_name_size'];
$ThisFileInfo['real']['chunks'][$ChunkCounter]['mime_type_size'] = BigEndian2Int(substr($ChunkData, $offset, 1));
$offset += 1;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['mime_type'] = substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['mime_type_size']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['mime_type_size'];
$ThisFileInfo['real']['chunks'][$ChunkCounter]['type_specific_len'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['type_specific_data'] = substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['type_specific_len']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['type_specific_len'];
if (empty($ThisFileInfo['playtime_seconds'])) {
$ThisFileInfo['playtime_seconds'] = max($ThisFileInfo['playtime_seconds'], ($ThisFileInfo['real']['chunks'][$ChunkCounter]['duration'] + $ThisFileInfo['real']['chunks'][$ChunkCounter]['start_time']) / 1000);
}
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['duration'] > 0) {
if (strstr($ThisFileInfo['real']['chunks'][$ChunkCounter]['mime_type'], 'audio')) {
$ThisFileInfo['audio']['bitrate'] = (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0) + $ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_bit_rate'];
$ThisFileInfo['audio']['dataformat'] = 'real';
} elseif (strstr($ThisFileInfo['real']['chunks'][$ChunkCounter]['mime_type'], 'video')) {
$ThisFileInfo['video']['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + $ThisFileInfo['real']['chunks'][$ChunkCounter]['avg_bit_rate'];
$ThisFileInfo['video']['dataformat'] = 'real';
}
$ThisFileInfo['bitrate'] = (isset($ThisFileInfo['video']['bitrate']) ? $ThisFileInfo['video']['bitrate'] : 0) + (isset($ThisFileInfo['audio']['bitrate']) ? $ThisFileInfo['audio']['bitrate'] : 0);
}
}
break;
case 'CONT':
// Content Description Header
$ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] == 0) {
$ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['title_len'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['title'] = (string) substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['title_len']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['title_len'];
$ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['artist_len'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['artist'] = (string) substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['artist_len']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['artist_len'];
$ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['copyright_len'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['copyright'] = (string) substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['copyright_len']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['copyright_len'];
$ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['comment_len'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['comment'] = (string) substr($ChunkData, $offset, $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['comment_len']);
$offset += $ThisFileInfo['real']['chunks'][$ChunkCounter]['raw']['comment_len'];
$commentkeystocopy = array('title' => 'title', 'artist' => 'artist', 'comment' => 'comment');
foreach ($commentkeystocopy as $key => $val) {
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]["{$key}"]) {
$ThisFileInfo['real']['comments']["{$val}"] = $ThisFileInfo['real']['chunks'][$ChunkCounter]["{$key}"];
}
}
// RealMedia tags have highest priority
if (!empty($ThisFileInfo['real']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['real']['comments'], $ThisFileInfo, true, true, true);
}
// add tag to array of tags
$ThisFileInfo['tags'][] = 'real';
}
break;
case 'DATA':
// Data Chunk Header
// do nothing
break;
case 'INDX':
// Index Section Header
$ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['object_version'] == 0) {
$ThisFileInfo['real']['chunks'][$ChunkCounter]['num_indices'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['stream_number'] = BigEndian2Int(substr($ChunkData, $offset, 2));
$offset += 2;
$ThisFileInfo['real']['chunks'][$ChunkCounter]['next_index_header'] = BigEndian2Int(substr($ChunkData, $offset, 4));
$offset += 4;
if ($ThisFileInfo['real']['chunks'][$ChunkCounter]['next_index_header'] == 0) {
// last index chunk found, ignore rest of file
return true;
} else {
// non-last index chunk, seek to next index chunk (skipping actual index data)
fseek($fd, $ThisFileInfo['real']['chunks'][$ChunkCounter]['next_index_header'], SEEK_SET);
}
}
break;
default:
$ThisFileInfo['warning'] .= "\n" . 'Unhandled RealMedia chunk "' . $ChunkName . '" at offset ' . $ThisFileInfo['real']['chunks'][$ChunkCounter]['offset'];
break;
}
$ChunkCounter++;
}
return true;
}
function getLPACHeaderFilepointer(&$fd, &$ThisFileInfo)
{
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$LPACheader = fread($fd, 14);
if (substr($LPACheader, 0, 4) != 'LPAC') {
$ThisFileInfo['error'] .= "\n" . 'Expected "LPAC" at offset ' . $ThisFileInfo['avdataoffset'] . ', found "' . $StreamMarker . '"';
return false;
}
$ThisFileInfo['avdataoffset'] += 14;
$ThisFileInfo['lpac']['file_version'] = BigEndian2Int(substr($LPACheader, 4, 1));
$ThisFileInfo['lpac']['raw']['audio_type'] = BigEndian2Int(substr($LPACheader, 5, 1));
$ThisFileInfo['lpac']['total_samples'] = BigEndian2Int(substr($LPACheader, 6, 4));
$ThisFileInfo['lpac']['raw']['parameters'] = BigEndian2Int(substr($LPACheader, 10, 4));
$ThisFileInfo['lpac']['flags']['is_wave'] = (bool) ($ThisFileInfo['lpac']['raw']['audio_type'] & 0x40);
$ThisFileInfo['lpac']['flags']['stereo'] = (bool) ($ThisFileInfo['lpac']['raw']['audio_type'] & 0x4);
$ThisFileInfo['lpac']['flags']['24_bit'] = (bool) ($ThisFileInfo['lpac']['raw']['audio_type'] & 0x2);
$ThisFileInfo['lpac']['flags']['16_bit'] = (bool) ($ThisFileInfo['lpac']['raw']['audio_type'] & 0x1);
if ($ThisFileInfo['lpac']['flags']['24_bit'] && $ThisFileInfo['lpac']['flags']['16_bit']) {
$ThisFileInfo['warning'] .= "\n" . '24-bit and 16-bit flags cannot both be set';
}
$ThisFileInfo['lpac']['flags']['fast_compress'] = (bool) ($ThisFileInfo['lpac']['raw']['parameters'] & 0x40000000);
$ThisFileInfo['lpac']['flags']['random_access'] = (bool) ($ThisFileInfo['lpac']['raw']['parameters'] & 0x8000000);
$ThisFileInfo['lpac']['block_length'] = pow(2, ($ThisFileInfo['lpac']['raw']['parameters'] & 0x7000000) >> 24) * 256;
$ThisFileInfo['lpac']['flags']['adaptive_prediction_order'] = (bool) ($ThisFileInfo['lpac']['raw']['parameters'] & 0x800000);
$ThisFileInfo['lpac']['flags']['adaptive_quantization'] = (bool) ($ThisFileInfo['lpac']['raw']['parameters'] & 0x400000);
$ThisFileInfo['lpac']['flags']['joint_stereo'] = (bool) ($ThisFileInfo['lpac']['raw']['parameters'] & 0x40000);
$ThisFileInfo['lpac']['flags']['quantization'] = ($ThisFileInfo['lpac']['raw']['parameters'] & 0x1f00) >> 8;
$ThisFileInfo['lpac']['flags']['max_prediction_order'] = $ThisFileInfo['lpac']['raw']['parameters'] & 0x3f;
if ($ThisFileInfo['lpac']['flags']['fast_compress'] && $ThisFileInfo['lpac']['flags']['max_prediction_order'] != 3) {
$ThisFileInfo['warning'] .= "\n" . 'max_prediction_order expected to be "3" if fast_compress is true, actual value is "' . $ThisFileInfo['lpac']['flags']['max_prediction_order'] . '"';
}
switch ($ThisFileInfo['lpac']['file_version']) {
case 6:
if ($ThisFileInfo['lpac']['flags']['adaptive_quantization']) {
$ThisFileInfo['warning'] .= "\n" . 'adaptive_quantization expected to be false in LPAC file stucture v6, actually true';
}
if ($ThisFileInfo['lpac']['flags']['quantization'] != 20) {
$ThisFileInfo['warning'] .= "\n" . 'Quantization expected to be 20 in LPAC file stucture v6, actually ' . $ThisFileInfo['lpac']['flags']['Q'];
}
break;
default:
$ThisFileInfo['warning'] .= "\n" . 'This version of getID3() only supports LPAC file format version 6, this file is version ' . $ThisFileInfo['lpac']['file_version'] . ' - please report to info@getid3.org';
break;
}
require_once GETID3_INCLUDEPATH . 'getid3.riff.php';
$dummy = array('avdataoffset' => $ThisFileInfo['avdataoffset'], 'avdataend' => $ThisFileInfo['avdataend'], 'filesize' => $ThisFileInfo['filesize'], 'error' => $ThisFileInfo['error'], 'warning' => $ThisFileInfo['warning'], 'tags' => $ThisFileInfo['tags'], 'comments' => $ThisFileInfo['comments']);
getRIFFHeaderFilepointer($fd, $dummy);
$ThisFileInfo['avdataoffset'] = $dummy['avdataoffset'];
$ThisFileInfo['RIFF'] = $dummy['RIFF'];
$ThisFileInfo['error'] = $dummy['error'];
$ThisFileInfo['warning'] = $dummy['warning'];
$ThisFileInfo['comments'] = $dummy['comments'];
$ThisFileInfo['audio']['sample_rate'] = $dummy['audio']['sample_rate'];
$ThisFileInfo['fileformat'] = 'lpac';
$ThisFileInfo['audio']['dataformat'] = 'lpac';
$ThisFileInfo['audio']['lossless'] = true;
$ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['lpac']['flags']['stereo'] ? 2 : 1;
if ($ThisFileInfo['lpac']['flags']['24_bit']) {
$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['RIFF']['audio'][0]['bits_per_sample'];
} elseif ($ThisFileInfo['lpac']['flags']['16_bit']) {
$ThisFileInfo['audio']['bits_per_sample'] = 16;
} else {
$ThisFileInfo['audio']['bits_per_sample'] = 8;
}
$ThisFileInfo['playtime_seconds'] = $ThisFileInfo['lpac']['total_samples'] / $ThisFileInfo['audio']['sample_rate'];
$ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['playtime_seconds'];
return true;
}
function getPNGHeaderFilepointer(&$fd, &$ThisFileInfo)
{
$ThisFileInfo['fileformat'] = 'png';
$ThisFileInfo['video']['dataformat'] = 'png';
$ThisFileInfo['video']['lossless'] = false;
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$PNGfiledata = fread($fd, FREAD_BUFFER_SIZE);
$offset = 0;
$PNGidentifier = substr($PNGfiledata, $offset, 8);
// $89 $50 $4E $47 $0D $0A $1A $0A
$offset += 8;
if ($PNGidentifier != chr(0x89) . chr(0x50) . chr(0x4e) . chr(0x47) . chr(0xd) . chr(0xa) . chr(0x1a) . chr(0xa)) {
$ThisFileInfo['error'] .= "\n" . 'First 8 bytes of file (' . PrintHexBytes($PNGidentifier) . ') did not match expected PNG identifier';
unset($ThisFileInfo['fileformat']);
return false;
}
while (ftell($fd) - (strlen($PNGfiledata) - $offset) < $ThisFileInfo['filesize']) {
$chunk['data_length'] = BigEndian2Int(substr($PNGfiledata, $offset, 4));
$offset += 4;
while (strlen($PNGfiledata) - $offset < $chunk['data_length'] + 4 && ftell($fd) < $ThisFileInfo['filesize']) {
$PNGfiledata .= fread($fd, FREAD_BUFFER_SIZE);
}
$chunk['type_text'] = substr($PNGfiledata, $offset, 4);
$offset += 4;
$chunk['type_raw'] = BigEndian2Int($chunk['type_text']);
$chunk['data'] = substr($PNGfiledata, $offset, $chunk['data_length']);
$offset += $chunk['data_length'];
$chunk['crc'] = BigEndian2Int(substr($PNGfiledata, $offset, 4));
$offset += 4;
$chunk['flags']['ancilliary'] = (bool) ($chunk['type_raw'] & 0x20000000);
$chunk['flags']['private'] = (bool) ($chunk['type_raw'] & 0x200000);
$chunk['flags']['reserved'] = (bool) ($chunk['type_raw'] & 0x2000);
$chunk['flags']['safe_to_copy'] = (bool) ($chunk['type_raw'] & 0x20);
switch ($chunk['type_text']) {
case 'IHDR':
// Image Header
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['width'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 4));
$ThisFileInfo['png'][$chunk['type_text']]['height'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 4, 4));
$ThisFileInfo['png'][$chunk['type_text']]['raw']['bit_depth'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 8, 1));
$ThisFileInfo['png'][$chunk['type_text']]['raw']['color_type'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 9, 1));
$ThisFileInfo['png'][$chunk['type_text']]['raw']['compression_method'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 10, 1));
$ThisFileInfo['png'][$chunk['type_text']]['raw']['filter_method'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 11, 1));
$ThisFileInfo['png'][$chunk['type_text']]['raw']['interlace_method'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 12, 1));
$ThisFileInfo['png'][$chunk['type_text']]['compression_method_text'] = PNGcompressionMethodLookup($ThisFileInfo['png'][$chunk['type_text']]['raw']['compression_method']);
$ThisFileInfo['png'][$chunk['type_text']]['color_type']['palette'] = (bool) ($ThisFileInfo['png'][$chunk['type_text']]['raw']['color_type'] & 0x1);
$ThisFileInfo['png'][$chunk['type_text']]['color_type']['true_color'] = (bool) ($ThisFileInfo['png'][$chunk['type_text']]['raw']['color_type'] & 0x2);
$ThisFileInfo['png'][$chunk['type_text']]['color_type']['alpha'] = (bool) ($ThisFileInfo['png'][$chunk['type_text']]['raw']['color_type'] & 0x4);
$ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['png'][$chunk['type_text']]['width'];
$ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['png'][$chunk['type_text']]['height'];
$ThisFileInfo['video']['bits_per_sample'] = IHDRcalculateBitsPerSample($ThisFileInfo['png'][$chunk['type_text']]['raw']['color_type'], $ThisFileInfo['png'][$chunk['type_text']]['raw']['bit_depth']);
break;
case 'PLTE':
// Palette
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$paletteoffset = 0;
for ($i = 0; $i <= 255; $i++) {
//$ThisFileInfo['png'][$chunk['type_text']]['red'][$i] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $paletteoffset++, 1));
//$ThisFileInfo['png'][$chunk['type_text']]['green'][$i] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $paletteoffset++, 1));
//$ThisFileInfo['png'][$chunk['type_text']]['blue'][$i] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $paletteoffset++, 1));
$red = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $paletteoffset++, 1));
$green = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $paletteoffset++, 1));
$blue = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $paletteoffset++, 1));
$ThisFileInfo['png'][$chunk['type_text']][$i] = $red << 16 | $green << 8 | $blue;
}
break;
case 'tRNS':
// Transparency
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
switch ($ThisFileInfo['png']['IHDR']['raw']['color_type']) {
case 0:
$ThisFileInfo['png'][$chunk['type_text']]['transparent_color_gray'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 2));
break;
case 2:
$ThisFileInfo['png'][$chunk['type_text']]['transparent_color_red'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 2));
$ThisFileInfo['png'][$chunk['type_text']]['transparent_color_green'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 2));
$ThisFileInfo['png'][$chunk['type_text']]['transparent_color_blue'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 2));
break;
case 3:
for ($i = 0; $i < strlen($ThisFileInfo['png'][$chunk['type_text']]['header']['data']); $i++) {
$ThisFileInfo['png'][$chunk['type_text']]['palette_opacity'][$i] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $i, 1));
}
break;
case 4:
case 6:
$ThisFileInfo['error'] .= "\n" . 'Invalid color_type in tRNS chunk: ' . $ThisFileInfo['png']['IHDR']['raw']['color_type'];
default:
$ThisFileInfo['warning'] .= "\n" . 'Unhandled color_type in tRNS chunk: ' . $ThisFileInfo['png']['IHDR']['raw']['color_type'];
break;
}
break;
case 'gAMA':
// Image Gamma
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['gamma'] = BigEndian2Int($ThisFileInfo['png'][$chunk['type_text']]['header']['data']) / 100000;
break;
case 'cHRM':
// Primary Chromaticities
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['white_x'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['white_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 4, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['red_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 8, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['red_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 12, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['green_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 16, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['green_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 20, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['blue_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 24, 4)) / 100000;
$ThisFileInfo['png'][$chunk['type_text']]['blue_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 28, 4)) / 100000;
break;
case 'sRGB':
// Standard RGB Color Space
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['reindering_intent'] = BigEndian2Int($ThisFileInfo['png'][$chunk['type_text']]['header']['data']);
$ThisFileInfo['png'][$chunk['type_text']]['reindering_intent_text'] = PNGsRGBintentLookup($ThisFileInfo['png'][$chunk['type_text']]['reindering_intent']);
break;
case 'iCCP':
// Embedded ICC Profile
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
list($profilename, $compressiondata) = explode(chr(0x0), $ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2);
$ThisFileInfo['png'][$chunk['type_text']]['profile_name'] = $profilename;
$ThisFileInfo['png'][$chunk['type_text']]['compression_method'] = BigEndian2Int(substr($compressiondata, 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['compression_profile'] = substr($compressiondata, 1);
$ThisFileInfo['png'][$chunk['type_text']]['compression_method_text'] = PNGcompressionMethodLookup($ThisFileInfo['png'][$chunk['type_text']]['compression_method']);
break;
case 'tEXt':
// Textual Data
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
list($keyword, $text) = explode(chr(0x0), $ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2);
$ThisFileInfo['png'][$chunk['type_text']]['keyword'] = $keyword;
$ThisFileInfo['png'][$chunk['type_text']]['text'] = $text;
$ThisFileInfo['png']['comments'][$ThisFileInfo['png'][$chunk['type_text']]['keyword']][] = $ThisFileInfo['png'][$chunk['type_text']]['text'];
break;
case 'zTXt':
// Compressed Textual Data
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
list($keyword, $otherdata) = explode(chr(0x0), $ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2);
$ThisFileInfo['png'][$chunk['type_text']]['keyword'] = $keyword;
$ThisFileInfo['png'][$chunk['type_text']]['compression_method'] = BigEndian2Int(substr($otherdata, 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['compressed_text'] = substr($otherdata, 1);
$ThisFileInfo['png'][$chunk['type_text']]['compression_method_text'] = PNGcompressionMethodLookup($ThisFileInfo['png'][$chunk['type_text']]['compression_method']);
switch ($ThisFileInfo['png'][$chunk['type_text']]['compression_method']) {
case 0:
$ThisFileInfo['png'][$chunk['type_text']]['text'] = gzuncompress($ThisFileInfo['png'][$chunk['type_text']]['compressed_text']);
break;
default:
// unknown compression method
break;
}
if (isset($ThisFileInfo['png'][$chunk['type_text']]['text'])) {
$ThisFileInfo['png']['comments'][$ThisFileInfo['png'][$chunk['type_text']]['keyword']][] = $ThisFileInfo['png'][$chunk['type_text']]['text'];
}
break;
case 'iTXt':
// International Textual Data
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
list($keyword, $otherdata) = explode(chr(0x0), $ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2);
$ThisFileInfo['png'][$chunk['type_text']]['keyword'] = $keyword;
$ThisFileInfo['png'][$chunk['type_text']]['compression'] = (bool) BigEndian2Int(substr($otherdata, 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['compression_method'] = BigEndian2Int(substr($otherdata, 1, 1));
$ThisFileInfo['png'][$chunk['type_text']]['compression_method_text'] = PNGcompressionMethodLookup($ThisFileInfo['png'][$chunk['type_text']]['compression_method']);
list($languagetag, $translatedkeyword, $text) = explode(chr(0x0), substr($otherdata, 2), 3);
$ThisFileInfo['png'][$chunk['type_text']]['language_tag'] = $languagetag;
$ThisFileInfo['png'][$chunk['type_text']]['translated_keyword'] = utf8_decode($translatedkeyword);
if ($ThisFileInfo['png'][$chunk['type_text']]['compression']) {
switch ($ThisFileInfo['png'][$chunk['type_text']]['compression_method']) {
case 0:
$ThisFileInfo['png'][$chunk['type_text']]['text'] = utf8_decode(gzuncompress($text));
break;
default:
// unknown compression method
break;
}
} else {
$ThisFileInfo['png'][$chunk['type_text']]['text'] = utf8_decode($text);
}
if (isset($ThisFileInfo['png'][$chunk['type_text']]['text'])) {
$ThisFileInfo['png']['comments'][$ThisFileInfo['png'][$chunk['type_text']]['keyword']][] = $ThisFileInfo['png'][$chunk['type_text']]['text'];
}
break;
case 'bKGD':
// Background Color
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
switch ($ThisFileInfo['png']['IHDR']['raw']['color_type']) {
case 0:
case 4:
$ThisFileInfo['png'][$chunk['type_text']]['background_gray'] = BigEndian2Int($ThisFileInfo['png'][$chunk['type_text']]['header']['data']);
break;
case 2:
case 6:
$ThisFileInfo['png'][$chunk['type_text']]['background_red'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0 * $ThisFileInfo['png']['IHDR']['raw']['bit_depth'], $ThisFileInfo['png']['IHDR']['raw']['bit_depth']));
$ThisFileInfo['png'][$chunk['type_text']]['background_green'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 1 * $ThisFileInfo['png']['IHDR']['raw']['bit_depth'], $ThisFileInfo['png']['IHDR']['raw']['bit_depth']));
$ThisFileInfo['png'][$chunk['type_text']]['background_blue'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2 * $ThisFileInfo['png']['IHDR']['raw']['bit_depth'], $ThisFileInfo['png']['IHDR']['raw']['bit_depth']));
break;
case 3:
$ThisFileInfo['png'][$chunk['type_text']]['background_index'] = BigEndian2Int($ThisFileInfo['png'][$chunk['type_text']]['header']['data']);
break;
default:
break;
}
break;
case 'pHYs':
// Physical Pixel Dimensions
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['pixels_per_unit_x'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 4));
$ThisFileInfo['png'][$chunk['type_text']]['pixels_per_unit_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 4, 4));
$ThisFileInfo['png'][$chunk['type_text']]['unit_specifier'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 8, 1));
$ThisFileInfo['png'][$chunk['type_text']]['unit'] = PNGpHYsUnitLookup($ThisFileInfo['png'][$chunk['type_text']]['unit_specifier']);
break;
case 'sBIT':
// Significant Bits
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
switch ($ThisFileInfo['png']['IHDR']['raw']['color_type']) {
case 0:
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_gray'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 1));
break;
case 2:
case 3:
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_red'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_green'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 1, 1));
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_blue'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2, 1));
break;
case 4:
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_gray'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_alpha'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 1, 1));
break;
case 6:
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_red'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_green'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 1, 1));
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_blue'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2, 1));
$ThisFileInfo['png'][$chunk['type_text']]['significant_bits_alpha'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 3, 1));
break;
default:
break;
}
break;
case 'sPLT':
// Suggested Palette
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
list($palettename, $otherdata) = explode(chr(0x0), $ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2);
$ThisFileInfo['png'][$chunk['type_text']]['palette_name'] = $palettename;
$sPLToffset = 0;
$ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bits'] = BigEndian2Int(substr($otherdata, $sPLToffset, 1));
$sPLToffset += 1;
$ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes'] = $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bits'] / 8;
$paletteCounter = 0;
while ($sPLToffset < strlen($otherdata)) {
$ThisFileInfo['png'][$chunk['type_text']]['red'][$paletteCounter] = BigEndian2Int(substr($otherdata, $sPLToffset, $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes']));
$sPLToffset += $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes'];
$ThisFileInfo['png'][$chunk['type_text']]['green'][$paletteCounter] = BigEndian2Int(substr($otherdata, $sPLToffset, $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes']));
$sPLToffset += $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes'];
$ThisFileInfo['png'][$chunk['type_text']]['blue'][$paletteCounter] = BigEndian2Int(substr($otherdata, $sPLToffset, $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes']));
$sPLToffset += $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes'];
$ThisFileInfo['png'][$chunk['type_text']]['alpha'][$paletteCounter] = BigEndian2Int(substr($otherdata, $sPLToffset, $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes']));
$sPLToffset += $ThisFileInfo['png'][$chunk['type_text']]['sample_depth_bytes'];
$ThisFileInfo['png'][$chunk['type_text']]['frequency'][$paletteCounter] = BigEndian2Int(substr($otherdata, $sPLToffset, 2));
$sPLToffset += 2;
$paletteCounter++;
}
break;
case 'hIST':
// Palette Histogram
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$hISTcounter = 0;
while ($hISTcounter < strlen($ThisFileInfo['png'][$chunk['type_text']]['header']['data'])) {
$ThisFileInfo['png'][$chunk['type_text']][$hISTcounter] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $hISTcounter / 2, 2));
$hISTcounter += 2;
}
break;
case 'tIME':
// Image Last-Modification Time
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['year'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 2));
$ThisFileInfo['png'][$chunk['type_text']]['month'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2, 1));
$ThisFileInfo['png'][$chunk['type_text']]['day'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 3, 1));
$ThisFileInfo['png'][$chunk['type_text']]['hour'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 4, 1));
$ThisFileInfo['png'][$chunk['type_text']]['minute'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 5, 1));
$ThisFileInfo['png'][$chunk['type_text']]['second'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 6, 1));
$ThisFileInfo['png'][$chunk['type_text']]['unix'] = gmmktime($ThisFileInfo['png'][$chunk['type_text']]['hour'], $ThisFileInfo['png'][$chunk['type_text']]['minute'], $ThisFileInfo['png'][$chunk['type_text']]['second'], $ThisFileInfo['png'][$chunk['type_text']]['month'], $ThisFileInfo['png'][$chunk['type_text']]['day'], $ThisFileInfo['png'][$chunk['type_text']]['year']);
break;
case 'oFFs':
// Image Offset
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['position_x'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 4), false, true);
$ThisFileInfo['png'][$chunk['type_text']]['position_y'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 4, 4), false, true);
$ThisFileInfo['png'][$chunk['type_text']]['unit_specifier'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 8, 1));
$ThisFileInfo['png'][$chunk['type_text']]['unit'] = PNGoFFsUnitLookup($ThisFileInfo['png'][$chunk['type_text']]['unit_specifier']);
break;
case 'pCAL':
// Calibration Of Pixel Values
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
list($calibrationname, $otherdata) = explode(chr(0x0), $ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2);
$ThisFileInfo['png'][$chunk['type_text']]['calibration_name'] = $calibrationname;
$pCALoffset = 0;
$ThisFileInfo['png'][$chunk['type_text']]['original_zero'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $pCALoffset, 4), false, true);
$pCALoffset += 4;
$ThisFileInfo['png'][$chunk['type_text']]['original_max'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $pCALoffset, 4), false, true);
$pCALoffset += 4;
$ThisFileInfo['png'][$chunk['type_text']]['equation_type'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $pCALoffset, 1));
$pCALoffset += 1;
$ThisFileInfo['png'][$chunk['type_text']]['equation_type_text'] = PNGpCALequationTypeLookup($ThisFileInfo['png'][$chunk['type_text']]['equation_type']);
$ThisFileInfo['png'][$chunk['type_text']]['parameter_count'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $pCALoffset, 1));
$pCALoffset += 1;
$ThisFileInfo['png'][$chunk['type_text']]['parameters'] = explode(chr(0x0), substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], $pCALoffset));
break;
case 'sCAL':
// Physical Scale Of Image Subject
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']]['unit_specifier'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 1));
$ThisFileInfo['png'][$chunk['type_text']]['unit'] = PNGsCALUnitLookup($ThisFileInfo['png'][$chunk['type_text']]['unit_specifier']);
list($pixelwidth, $pixelheight) = explode(chr(0x0), substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 1));
$ThisFileInfo['png'][$chunk['type_text']]['pixel_width'] = $pixelwidth;
$ThisFileInfo['png'][$chunk['type_text']]['pixel_height'] = $pixelheight;
break;
case 'gIFg':
// GIF Graphic Control Extension
$gIFgCounter = 0;
if (isset($ThisFileInfo['png'][$chunk['type_text']]) && is_array($ThisFileInfo['png'][$chunk['type_text']])) {
$gIFgCounter = count($ThisFileInfo['png'][$chunk['type_text']]);
}
$ThisFileInfo['png'][$chunk['type_text']][$gIFgCounter]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']][$gIFgCounter]['disposal_method'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 1));
$ThisFileInfo['png'][$chunk['type_text']][$gIFgCounter]['user_input_flag'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 1, 1));
$ThisFileInfo['png'][$chunk['type_text']][$gIFgCounter]['delay_time'] = BigEndian2Int(substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 2, 2));
break;
case 'gIFx':
// GIF Application Extension
$gIFxCounter = 0;
if (isset($ThisFileInfo['png'][$chunk['type_text']]) && is_array($ThisFileInfo['png'][$chunk['type_text']])) {
$gIFxCounter = count($ThisFileInfo['png'][$chunk['type_text']]);
}
$ThisFileInfo['png'][$chunk['type_text']][$gIFxCounter]['header'] = $chunk;
$ThisFileInfo['png'][$chunk['type_text']][$gIFxCounter]['application_identifier'] = substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 0, 8);
$ThisFileInfo['png'][$chunk['type_text']][$gIFxCounter]['authentication_code'] = substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 8, 3);
$ThisFileInfo['png'][$chunk['type_text']][$gIFxCounter]['application_data'] = substr($ThisFileInfo['png'][$chunk['type_text']]['header']['data'], 11);
break;
case 'IDAT':
// Image Data
$idatinformationfieldindex = 0;
if (isset($ThisFileInfo['png']['IDAT']) && is_array($ThisFileInfo['png']['IDAT'])) {
$idatinformationfieldindex = count($ThisFileInfo['png']['IDAT']);
}
unset($chunk['data']);
$ThisFileInfo['png'][$chunk['type_text']][$idatinformationfieldindex]['header'] = $chunk;
break;
case 'IEND':
// Image Trailer
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
break;
default:
//unset($chunk['data']);
$ThisFileInfo['png'][$chunk['type_text']]['header'] = $chunk;
$ThisFileInfo['warning'] .= "\n" . 'Unhandled chunk type: ' . $chunk['type_text'];
break;
}
}
// PNG tags have highest priority
if (!empty($ThisFileInfo['png']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['png']['comments'], $ThisFileInfo, true, true, true);
// add tag to array of tags
$ThisFileInfo['tags'][] = 'png';
}
return true;
}
function MPEGaudioHeaderDecode($Header4Bytes)
{
// AAAA AAAA AAAB BCCD EEEE FFGH IIJJ KLMM
// A - Frame sync (all bits set)
// B - MPEG Audio version ID
// C - Layer description
// D - Protection bit
// E - Bitrate index
// F - Sampling rate frequency index
// G - Padding bit
// H - Private bit
// I - Channel Mode
// J - Mode extension (Only if Joint stereo)
// K - Copyright
// L - Original
// M - Emphasis
if (strlen($Header4Bytes) != 4) {
return false;
}
$MPEGrawHeader['synch'] = (BigEndian2Int(substr($Header4Bytes, 0, 2)) & 0xffe0) >> 4;
$MPEGrawHeader['version'] = (ord($Header4Bytes[1]) & 0x18) >> 3;
// BB
$MPEGrawHeader['layer'] = (ord($Header4Bytes[1]) & 0x6) >> 1;
// CC
$MPEGrawHeader['protection'] = ord($Header4Bytes[1]) & 0x1;
// D
$MPEGrawHeader['bitrate'] = (ord($Header4Bytes[2]) & 0xf0) >> 4;
// EEEE
$MPEGrawHeader['sample_rate'] = (ord($Header4Bytes[2]) & 0xc) >> 2;
// FF
$MPEGrawHeader['padding'] = (ord($Header4Bytes[2]) & 0x2) >> 1;
// G
$MPEGrawHeader['private'] = ord($Header4Bytes[2]) & 0x1;
// H
$MPEGrawHeader['channelmode'] = (ord($Header4Bytes[3]) & 0xc0) >> 6;
// II
$MPEGrawHeader['modeextension'] = (ord($Header4Bytes[3]) & 0x30) >> 4;
// JJ
$MPEGrawHeader['copyright'] = (ord($Header4Bytes[3]) & 0x8) >> 3;
// K
$MPEGrawHeader['original'] = (ord($Header4Bytes[3]) & 0x4) >> 2;
// L
$MPEGrawHeader['emphasis'] = ord($Header4Bytes[3]) & 0x3;
// MM
return $MPEGrawHeader;
}
function getID3v2Filepointer($fd, &$MP3fileInfo)
{
// Overall tag structure:
// +-----------------------------+
// | Header (10 bytes) |
// +-----------------------------+
// | Extended Header |
// | (variable length, OPTIONAL) |
// +-----------------------------+
// | Frames (variable length) |
// +-----------------------------+
// | Padding |
// | (variable length, OPTIONAL) |
// +-----------------------------+
// | Footer (10 bytes, OPTIONAL) |
// +-----------------------------+
// Header
// ID3v2/file identifier "ID3"
// ID3v2 version $04 00
// ID3v2 flags (%ab000000 in v2.2, %abc00000 in v2.3, %abcd0000 in v2.4.x)
// ID3v2 size 4 * %0xxxxxxx
rewind($fd);
$header = fread($fd, 10);
if (substr($header, 0, 3) == 'ID3') {
$MP3fileInfo['id3']['id3v2']['header'] = TRUE;
$MP3fileInfo['id3']['id3v2']['majorversion'] = ord($header[3]);
$MP3fileInfo['id3']['id3v2']['minorversion'] = ord($header[4]);
}
if (isset($MP3fileInfo['id3']['id3v2']['header']) && $MP3fileInfo['id3']['id3v2']['majorversion'] <= 4) {
// this script probably won't correctly parse ID3v2.5.x and above.
$id3_flags = BigEndian2Bin($header[5]);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) {
// %ab000000 in v2.2
$MP3fileInfo['id3']['id3v2']['flags']['unsynch'] = $id3_flags[0];
// a - Unsynchronisation
$MP3fileInfo['id3']['id3v2']['flags']['compression'] = $id3_flags[1];
// b - Compression
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3) {
// %abc00000 in v2.3
$MP3fileInfo['id3']['id3v2']['flags']['unsynch'] = $id3_flags[0];
// a - Unsynchronisation
$MP3fileInfo['id3']['id3v2']['flags']['exthead'] = $id3_flags[1];
// b - Extended header
$MP3fileInfo['id3']['id3v2']['flags']['experim'] = $id3_flags[2];
// c - Experimental indicator
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 4) {
// %abcd0000 in v2.4
$MP3fileInfo['id3']['id3v2']['flags']['unsynch'] = $id3_flags[0];
// a - Unsynchronisation
$MP3fileInfo['id3']['id3v2']['flags']['exthead'] = $id3_flags[1];
// b - Extended header
$MP3fileInfo['id3']['id3v2']['flags']['experim'] = $id3_flags[2];
// c - Experimental indicator
$MP3fileInfo['id3']['id3v2']['flags']['isfooter'] = $id3_flags[3];
// d - Footer present
}
}
}
$MP3fileInfo['id3']['id3v2']['headerlength'] = BigEndian2Int(substr($header, 6, 4), 1) + ID3v2HeaderLength($MP3fileInfo['id3']['id3v2']['majorversion']);
// Extended Header
if (isset($MP3fileInfo['id3']['id3v2']['flags']['exthead']) && $MP3fileInfo['id3']['id3v2']['flags']['exthead']) {
// Extended header size 4 * %0xxxxxxx
// Number of flag bytes $01
// Extended Flags $xx
// Where the 'Extended header size' is the size of the whole extended header, stored as a 32 bit synchsafe integer.
$extheader = fread($fd, 4);
$MP3fileInfo['id3']['id3v2']['extheaderlength'] = BigEndian2Int($extheader, 1);
// The extended flags field, with its size described by 'number of flag bytes', is defined as:
// %0bcd0000
// b - Tag is an update
// Flag data length $00
// c - CRC data present
// Flag data length $05
// Total frame CRC 5 * %0xxxxxxx
// d - Tag restrictions
// Flag data length $01
$extheaderflagbytes = fread($fd, 1);
$extheaderflags = fread($fd, $extheaderflagbytes);
$id3_exthead_flags = BigEndian2Bin(substr($header, 5, 1));
$MP3fileInfo['id3']['id3v2']['exthead_flags']['update'] = substr($id3_exthead_flags, 1, 1);
$MP3fileInfo['id3']['id3v2']['exthead_flags']['CRC'] = substr($id3_exthead_flags, 2, 1);
if ($MP3fileInfo['id3']['id3v2']['exthead_flags']['CRC']) {
$extheaderrawCRC = fread($fd, 5);
$MP3fileInfo['id3']['id3v2']['exthead_flags']['CRC'] = BigEndian2Int($extheaderrawCRC, 1);
}
$MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions'] = substr($id3_exthead_flags, 3, 1);
if ($MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions']) {
// Restrictions %ppqrrstt
$extheaderrawrestrictions = fread($fd, 1);
$MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions_tagsize'] = (bindec('11000000') & ord($extheaderrawrestrictions)) >> 6;
// p - Tag size restrictions
$MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions_textenc'] = (bindec('00100000') & ord($extheaderrawrestrictions)) >> 5;
// q - Text encoding restrictions
$MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions_textsize'] = (bindec('00011000') & ord($extheaderrawrestrictions)) >> 3;
// r - Text fields size restrictions
$MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions_imgenc'] = (bindec('00000100') & ord($extheaderrawrestrictions)) >> 2;
// s - Image encoding restrictions
$MP3fileInfo['id3']['id3v2']['exthead_flags']['restrictions_imgsize'] = (bindec('00000011') & ord($extheaderrawrestrictions)) >> 0;
// t - Image size restrictions
}
}
// end extended header
// Frames
// All ID3v2 frames consists of one frame header followed by one or more
// fields containing the actual information. The header is always 10
// bytes and laid out as follows:
//
// Frame ID $xx xx xx xx (four characters)
// Size 4 * %0xxxxxxx
// Flags $xx xx
$sizeofframes = $MP3fileInfo['id3']['id3v2']['headerlength'] - ID3v2HeaderLength($MP3fileInfo['id3']['id3v2']['majorversion']);
if (isset($MP3fileInfo['id3']['id3v2']['extheaderlength'])) {
$sizeofframes -= $MP3fileInfo['id3']['id3v2']['extheaderlength'];
}
if (isset($MP3fileInfo['id3']['id3v2']['flags']['isfooter']) && $MP3fileInfo['id3']['id3v2']['flags']['isfooter']) {
$sizeofframes -= 10;
// footer takes last 10 bytes of ID3v2 header, after frame data, before audio
}
if ($sizeofframes > 0) {
$framedata = fread($fd, $sizeofframes);
// read all frames from file into $framedata variable
// if entire frame data is unsynched, de-unsynch it now (ID3v2.3.x)
if (isset($MP3fileInfo['id3']['id3v2']['flags']['unsynch']) && $MP3fileInfo['id3']['id3v2']['flags']['unsynch'] && $MP3fileInfo['id3']['id3v2']['majorversion'] <= 3) {
$framedata = DeUnSynchronise($framedata);
}
// [in ID3v2.4.0] Unsynchronisation [S:6.1] is done on frame level, instead
// of on tag level, making it easier to skip frames, increasing the streamability
// of the tag. The unsynchronisation flag in the header [S:3.1] indicates that
// there exists an unsynchronised frame, while the new unsynchronisation flag in
// the frame header [S:4.1.2] indicates unsynchronisation.
include_once GETID3_INCLUDEPATH . 'getid3.frames.php';
// ID3v2FrameProcessing()
$framedataoffset = 10;
// how many bytes into the stream - start from after the 10-byte header
while (isset($framedata) && strlen($framedata) > 0) {
// cycle through until no more frame data is left to parse
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) {
// Frame ID $xx xx xx (three characters)
// Size $xx xx xx (24-bit integer)
// Flags $xx xx
$frame_header = substr($framedata, 0, 6);
// take next 6 bytes for header
$framedata = substr($framedata, 6);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 3);
$frame_size = BigEndian2Int(substr($frame_header, 3, 3), 0);
$frame_flags = '';
// not used for anything, just to avoid E_NOTICEs
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] > 2) {
// Frame ID $xx xx xx xx (four characters)
// Size $xx xx xx xx (32-bit integer in v2.3, 28-bit synchsafe in v2.4+)
// Flags $xx xx
$frame_header = substr($framedata, 0, 10);
// take next 10 bytes for header
$framedata = substr($framedata, 10);
// and leave the rest in $framedata
$frame_name = substr($frame_header, 0, 4);
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 3) {
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
} else {
// ID3v2.4+
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 1);
// 32-bit synchsafe integer (28-bit value)
}
if ($frame_size < strlen($framedata) + 4) {
$nextFrameID = substr($framedata, $frame_size, 4);
if (IsValidID3v2FrameName($nextFrameID, $MP3fileInfo['id3']['id3v2']['majorversion'])) {
// next frame is OK
} else {
if ($frame_name == chr(0) . 'MP3' || $frame_name == ' MP3' || $frame_name == 'MP3e') {
// MP3ext known broken frames - "ok" for the purposes of this test
} else {
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 4 && IsValidID3v2FrameName(substr($framedata, BigEndian2Int(substr($frame_header, 4, 4), 0), 4), 3)) {
$MP3fileInfo['error'] .= "\n" . 'ID3v2 tag written as ID3v2.4, but with non-synchsafe integers (ID3v2.3 style). Older versions of Helium2 (www.helium2.com) is a known culprit of this. Tag has been parsed as ID3v2.3';
$MP3fileInfo['id3']['id3v2']['majorversion'] = 3;
$frame_size = BigEndian2Int(substr($frame_header, 4, 4), 0);
// 32-bit integer
}
}
}
}
$frame_flags = BigEndian2Bin(substr($frame_header, 8, 2));
}
}
if ($frame_name == chr(0) . chr(0) . chr(0) . chr(0)) {
// padding encountered
// $MP3fileInfo['id3']['id3v2']['padding']['start'] = $MP3fileInfo['id3']['id3v2']['headerlength'] - strlen($framedata);
$MP3fileInfo['id3']['id3v2']['padding']['start'] = $framedataoffset;
$MP3fileInfo['id3']['id3v2']['padding']['length'] = strlen($framedata);
$MP3fileInfo['id3']['id3v2']['padding']['valid'] = TRUE;
for ($i = 0; $i < $MP3fileInfo['id3']['id3v2']['padding']['length']; $i++) {
if (substr($framedata, $i, 1) != chr(0)) {
$MP3fileInfo['id3']['id3v2']['padding']['valid'] = FALSE;
$MP3fileInfo['id3']['id3v2']['padding']['errorpos'] = $MP3fileInfo['id3']['id3v2']['padding']['start'] + $i;
break;
}
}
break;
// skip rest of ID3v2 header
}
if ($frame_size <= strlen($framedata) && IsValidID3v2FrameName($frame_name, $MP3fileInfo['id3']['id3v2']['majorversion'])) {
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['data'] = substr($framedata, 0, $frame_size);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['datalength'] = CastAsInt($frame_size);
$MP3fileInfo['id3']['id3v2']["{$frame_name}"]['dataoffset'] = $framedataoffset;
$framedata = substr($framedata, $frame_size);
// in getid3.frames.php - this function does all the FrameID-level parsing
ID3v2FrameProcessing($frame_name, $frame_flags, $MP3fileInfo);
$framedataoffset += $frame_size + ID3v2HeaderLength($MP3fileInfo['id3']['id3v2']['majorversion']);
} else {
// invalid frame length or FrameID
$MP3fileInfo['error'] .= "\n" . 'error parsing "' . $frame_name . '" (' . $framedataoffset . ' bytes into the ID3v2.' . $MP3fileInfo['id3']['id3v2']['majorversion'] . ' tag).';
if ($frame_size > strlen($framedata)) {
$MP3fileInfo['error'] .= ' (ERROR: $frame_size (' . $frame_size . ') > strlen($framedata) (' . strlen($framedata) . ')).';
}
if (!IsValidID3v2FrameName($frame_name, $MP3fileInfo['id3']['id3v2']['majorversion'])) {
$MP3fileInfo['error'] .= ' (ERROR: !IsValidID3v2FrameName("' . str_replace(chr(0), ' ', $frame_name) . '", ' . $MP3fileInfo['id3']['id3v2']['majorversion'] . '))).';
if ($frame_name == chr(0) . 'MP3' || $frame_name == ' MP3' || $frame_name == 'MP3e') {
$MP3fileInfo['error'] .= ' [Note: this particular error has been known to happen with tags edited by "MP3ext V3.3.17(unicode)"]';
} else {
if ($frame_name == 'COM ') {
$MP3fileInfo['error'] .= ' [Note: this particular error has been known to happen with tags edited by "iTunes X v2.0.3"]';
}
}
}
if ($frame_size <= strlen($framedata) && IsValidID3v2FrameName(substr($framedata, $frame_size, 4), $MP3fileInfo['id3']['id3v2']['majorversion'])) {
// next frame is valid, just skip the current frame
$framedata = substr($framedata, $frame_size);
} else {
// next frame is invalid too, abort processing
unset($framedata);
}
}
}
}
// Footer
// The footer is a copy of the header, but with a different identifier.
// ID3v2 identifier "3DI"
// ID3v2 version $04 00
// ID3v2 flags %abcd0000
// ID3v2 size 4 * %0xxxxxxx
if (isset($MP3fileInfo['id3']['id3v2']['flags']['isfooter']) && $MP3fileInfo['id3']['id3v2']['flags']['isfooter']) {
$footer = fread($fd, 10);
if (substr($footer, 0, 3) == '3DI') {
$MP3fileInfo['id3']['id3v2']['footer'] = true;
$MP3fileInfo['id3']['id3v2']['majorversion_footer'] = ord(substr($footer, 3, 1));
$MP3fileInfo['id3']['id3v2']['minorversion_footer'] = ord(substr($footer, 4, 1));
}
if ($MP3fileInfo['id3']['id3v2']['majorversion_footer'] <= 4) {
$id3_flags = BigEndian2Bin(substr($footer, 5, 1));
$MP3fileInfo['id3']['id3v2']['flags']['unsynch_footer'] = substr($id3_flags, 0, 1);
$MP3fileInfo['id3']['id3v2']['flags']['extfoot_footer'] = substr($id3_flags, 1, 1);
$MP3fileInfo['id3']['id3v2']['flags']['experim_footer'] = substr($id3_flags, 2, 1);
$MP3fileInfo['id3']['id3v2']['flags']['isfooter_footer'] = substr($id3_flags, 3, 1);
$MP3fileInfo['id3']['id3v2']['footerlength'] = BigEndian2Int(substr($footer, 6, 4), 1);
}
}
// end footer
// Translate most common ID3v2 FrameIDs to easier-to-understand names
if ($MP3fileInfo['id3']['id3v2']['majorversion'] == 2) {
if (isset($MP3fileInfo['id3']['id3v2']['TT2'])) {
$MP3fileInfo['id3']['id3v2']['title'] = $MP3fileInfo['id3']['id3v2']['TT2']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TP1'])) {
$MP3fileInfo['id3']['id3v2']['artist'] = $MP3fileInfo['id3']['id3v2']['TP1']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TAL'])) {
$MP3fileInfo['id3']['id3v2']['album'] = $MP3fileInfo['id3']['id3v2']['TAL']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TYE'])) {
$MP3fileInfo['id3']['id3v2']['year'] = $MP3fileInfo['id3']['id3v2']['TYE']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TRK'])) {
$MP3fileInfo['id3']['id3v2']['track'] = $MP3fileInfo['id3']['id3v2']['TRK']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TCO'])) {
$MP3fileInfo['id3']['id3v2']['genre'] = $MP3fileInfo['id3']['id3v2']['TCO']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['COM'][0]['asciidata'])) {
$MP3fileInfo['id3']['id3v2']['comment'] = $MP3fileInfo['id3']['id3v2']['COM'][0]['asciidata'];
}
} else {
// $MP3fileInfo['id3']['id3v2']['majorversion'] > 2
if (isset($MP3fileInfo['id3']['id3v2']['TIT2'])) {
$MP3fileInfo['id3']['id3v2']['title'] = $MP3fileInfo['id3']['id3v2']['TIT2']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TPE1'])) {
$MP3fileInfo['id3']['id3v2']['artist'] = $MP3fileInfo['id3']['id3v2']['TPE1']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TALB'])) {
$MP3fileInfo['id3']['id3v2']['album'] = $MP3fileInfo['id3']['id3v2']['TALB']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TYER'])) {
$MP3fileInfo['id3']['id3v2']['year'] = $MP3fileInfo['id3']['id3v2']['TYER']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TRCK'])) {
$MP3fileInfo['id3']['id3v2']['track'] = $MP3fileInfo['id3']['id3v2']['TRCK']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['TCON'])) {
$MP3fileInfo['id3']['id3v2']['genre'] = $MP3fileInfo['id3']['id3v2']['TCON']['asciidata'];
}
if (isset($MP3fileInfo['id3']['id3v2']['COMM'][0]['asciidata'])) {
$MP3fileInfo['id3']['id3v2']['comment'] = $MP3fileInfo['id3']['id3v2']['COMM'][0]['asciidata'];
}
}
if (isset($MP3fileInfo['id3']['id3v2']['genre'])) {
$MP3fileInfo['id3']['id3v2']['genrelist'] = ParseID3v2GenreString($MP3fileInfo['id3']['id3v2']['genre']);
if ($MP3fileInfo['id3']['id3v2']['genrelist']['genreid'][0] !== '') {
$MP3fileInfo['id3']['id3v2']['genreid'] = $MP3fileInfo['id3']['id3v2']['genrelist']['genreid'][0];
}
$MP3fileInfo['id3']['id3v2']['genre'] = $MP3fileInfo['id3']['id3v2']['genrelist']['genre'][0];
}
if (isset($MP3fileInfo['id3']['id3v2']['track']) && strpos($MP3fileInfo['id3']['id3v2']['track'], '/') !== FALSE) {
$tracktotaltracks = explode('/', $MP3fileInfo['id3']['id3v2']['track']);
$MP3fileInfo['id3']['id3v2']['track'] = $tracktotaltracks[0];
$MP3fileInfo['id3']['id3v2']['totaltracks'] = $tracktotaltracks[1];
}
} else {
// MajorVersion is > 4, or no ID3v2 header present
if (isset($MP3fileInfo['id3']['id3v2']['header'])) {
// MajorVersion is > 4
$MP3fileInfo['error'] .= "\n" . 'this script only parses up to ID3v2.4.x - this tag is ID3v2.' . $MP3fileInfo['id3']['id3v2']['majorversion'] . '.' . $MP3fileInfo['id3']['id3v2']['minorversion'];
} else {
// no ID3v2 header present - this is fine, just don't process anything.
}
}
return TRUE;
}
){kind=link}