function getMP3headerFilepointer(&$fd, &$ThisFileInfo)
{
getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['avdataoffset']);
if (isset($ThisFileInfo['mpeg']['audio']['bitratemode'])) {
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitratemode']);
}
if (isset($ThisFileInfo['id3v2']) && $ThisFileInfo['avdataoffset'] > $ThisFileInfo['id3v2']['headerlength'] || !isset($ThisFileInfo['id3v2']) && $ThisFileInfo['avdataoffset'] > 0) {
$ThisFileInfo['warning'] .= "\n" . 'Unknown data before synch ';
if (isset($ThisFileInfo['id3v2']['headerlength'])) {
$ThisFileInfo['warning'] .= '(ID3v2 header ends at ' . $ThisFileInfo['id3v2']['headerlength'] . ', ';
} else {
$ThisFileInfo['warning'] .= '(should be at beginning of file, ';
}
$ThisFileInfo['warning'] .= 'synch detected at ' . $ThisFileInfo['avdataoffset'] . ')';
if ($ThisFileInfo['audio']['bitrate_mode'] == 'cbr' && $ThisFileInfo['avdataoffset'] == $ThisFileInfo['mpeg']['audio']['framelength']) {
$ThisFileInfo['warning'] .= ' This is a known problem with some versions of LAME (3.91, 3.92) DLL in CBR mode.';
$ThisFileInfo['audio']['codec'] = 'LAME';
}
}
if (isset($ThisFileInfo['mpeg']['audio']['layer']) && $ThisFileInfo['mpeg']['audio']['layer'] == 'II') {
$ThisFileInfo['fileformat'] = 'mp2';
$ThisFileInfo['audio']['dataformat'] = 'mp2';
} elseif (isset($ThisFileInfo['mpeg']['audio']['layer']) && $ThisFileInfo['mpeg']['audio']['layer'] == 'I') {
$ThisFileInfo['fileformat'] = 'mp1';
$ThisFileInfo['audio']['dataformat'] = 'mp1';
}
if (empty($ThisFileInfo['fileformat'])) {
$ThisFileInfo['error'] .= "\n" . 'Synch not found';
unset($ThisFileInfo['fileformat']);
unset($ThisFileInfo['audio']['bitrate_mode']);
unset($ThisFileInfo['avdataoffset']);
unset($ThisFileInfo['avdataend']);
return false;
}
$ThisFileInfo['mime_type'] = 'audio/mpeg';
// Calculate playtime from audiobytes etc
if (!isset($ThisFileInfo['playtime_seconds']) && isset($ThisFileInfo['audio']['bitrate']) && $ThisFileInfo['audio']['bitrate'] > 0) {
$ThisFileInfo['playtime_seconds'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate'];
}
if (isset($ThisFileInfo['mpeg']['audio']['LAME'])) {
$ThisFileInfo['audio']['codec'] = 'LAME';
if (!empty($ThisFileInfo['mpeg']['audio']['LAME']['short_version'])) {
$ThisFileInfo['audio']['encoder'] = trim($ThisFileInfo['mpeg']['audio']['LAME']['short_version']);
}
}
return true;
}
function getMP3headerFilepointer(&$fd, &$ThisFileInfo)
{
getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['avdataoffset']);
if (isset($ThisFileInfo['mpeg']['audio']['bitrate_mode'])) {
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitrate_mode']);
}
if (isset($ThisFileInfo['id3v2']) && $ThisFileInfo['avdataoffset'] > $ThisFileInfo['id3v2']['headerlength'] || !isset($ThisFileInfo['id3v2']) && $ThisFileInfo['avdataoffset'] > 0) {
$ThisFileInfo['warning'] .= "\n" . 'Unknown data before synch ';
if (isset($ThisFileInfo['id3v2']['headerlength'])) {
$ThisFileInfo['warning'] .= '(ID3v2 header ends at ' . $ThisFileInfo['id3v2']['headerlength'] . ', then ' . ($ThisFileInfo['avdataoffset'] - $ThisFileInfo['id3v2']['headerlength']) . ' bytes garbage, ';
} else {
$ThisFileInfo['warning'] .= '(should be at beginning of file, ';
}
$ThisFileInfo['warning'] .= 'synch detected at ' . $ThisFileInfo['avdataoffset'] . ')';
if ($ThisFileInfo['audio']['bitrate_mode'] == 'cbr') {
if (!empty($ThisFileInfo['id3v2']['headerlength']) && $ThisFileInfo['avdataoffset'] - $ThisFileInfo['id3v2']['headerlength'] == $ThisFileInfo['mpeg']['audio']['framelength']) {
$ThisFileInfo['warning'] .= '. This is a known problem with some versions of LAME (3.91, 3.92) DLL in CBR mode.';
$ThisFileInfo['audio']['codec'] = 'LAME';
} elseif (empty($ThisFileInfo['id3v2']['headerlength']) && $ThisFileInfo['avdataoffset'] == $ThisFileInfo['mpeg']['audio']['framelength']) {
$ThisFileInfo['warning'] .= '. This is a known problem with some versions of LAME (3.91, 3.92) DLL in CBR mode.';
$ThisFileInfo['audio']['codec'] = 'LAME';
}
}
}
if (isset($ThisFileInfo['mpeg']['audio']['layer']) && $ThisFileInfo['mpeg']['audio']['layer'] == 'II') {
$ThisFileInfo['audio']['dataformat'] = 'mp2';
} elseif (isset($ThisFileInfo['mpeg']['audio']['layer']) && $ThisFileInfo['mpeg']['audio']['layer'] == 'I') {
$ThisFileInfo['audio']['dataformat'] = 'mp1';
}
if ($ThisFileInfo['fileformat'] == 'mp3') {
switch ($ThisFileInfo['audio']['dataformat']) {
case 'mp1':
case 'mp2':
case 'mp3':
$ThisFileInfo['fileformat'] = $ThisFileInfo['audio']['dataformat'];
break;
default:
$ThisFileInfo['warning'] .= "\n" . 'Expecting [audio][dataformat] to be mp1/mp2/mp3 when fileformat == mp3, [audio][dataformat] actually "' . $ThisFileInfo['audio']['dataformat'] . '"';
break;
}
}
if (empty($ThisFileInfo['fileformat'])) {
$ThisFileInfo['error'] .= "\n" . 'Synch not found';
unset($ThisFileInfo['fileformat']);
unset($ThisFileInfo['audio']['bitrate_mode']);
unset($ThisFileInfo['avdataoffset']);
unset($ThisFileInfo['avdataend']);
return false;
}
$ThisFileInfo['mime_type'] = 'audio/mpeg';
$ThisFileInfo['audio']['lossless'] = false;
// Calculate playtime
if (!isset($ThisFileInfo['playtime_seconds']) && isset($ThisFileInfo['audio']['bitrate']) && $ThisFileInfo['audio']['bitrate'] > 0) {
$ThisFileInfo['playtime_seconds'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate'];
}
if (isset($ThisFileInfo['mpeg']['audio']['LAME'])) {
$ThisFileInfo['audio']['codec'] = 'LAME';
if (!empty($ThisFileInfo['mpeg']['audio']['LAME']['long_version'])) {
$ThisFileInfo['audio']['encoder'] = trim($ThisFileInfo['mpeg']['audio']['LAME']['long_version']);
}
}
return true;
}
function getQuicktimeHeaderFilepointer(&$fd, &$ThisFileInfo)
{
$ThisFileInfo['fileformat'] = 'quicktime';
$ThisFileInfo['audio']['dataformat'] = 'quicktime';
$ThisFileInfo['video']['dataformat'] = 'quicktime';
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$offset = 0;
$atomcounter = 0;
while ($offset < $ThisFileInfo['avdataend']) {
fseek($fd, $offset, SEEK_SET);
$AtomHeader = fread($fd, 8);
$atomsize = BigEndian2Int(substr($AtomHeader, 0, 4));
$atomname = substr($AtomHeader, 4, 4);
$ThisFileInfo['quicktime']["{$atomname}"]['name'] = $atomname;
$ThisFileInfo['quicktime']["{$atomname}"]['size'] = $atomsize;
$ThisFileInfo['quicktime']["{$atomname}"]['offset'] = $offset;
if ($offset + $atomsize > $ThisFileInfo['avdataend']) {
$ThisFileInfo['error'] .= "\n" . 'Atom at offset ' . $offset . ' claims to go beyond end-of-file (length: ' . $atomsize . ' bytes)';
return false;
}
switch ($atomname) {
case 'mdat':
// Media DATa atom
// 'mdat' contains the actual data for the audio/video
if (!isset($ThisFileInfo['avdataend_tmp']) || $ThisFileInfo['quicktime']["{$atomname}"]['size'] > $ThisFileInfo['avdataend_tmp'] - $ThisFileInfo['avdataoffset']) {
$ThisFileInfo['avdataoffset'] = $ThisFileInfo['quicktime']["{$atomname}"]['offset'] + 8;
$OldAVDataEnd = $ThisFileInfo['avdataend'];
$ThisFileInfo['avdataend'] = $ThisFileInfo['quicktime']["{$atomname}"]['offset'] + $ThisFileInfo['quicktime']["{$atomname}"]['size'];
require_once GETID3_INCLUDEPATH . 'getid3.mp3.php';
if (MPEGaudioHeaderValid(MPEGaudioHeaderDecode(fread($fd, 4)))) {
getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['avdataoffset'], false);
if (isset($ThisFileInfo['mpeg']['audio'])) {
$ThisFileInfo['audio']['dataformat'] = 'mp3';
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels'];
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'] * 1000;
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitratemode']);
$ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate'];
}
}
$ThisFileInfo['avdataend'] = $OldAVDataEnd;
unset($OldAVDataEnd);
}
break;
case 'free':
// FREE space atom
// FREE space atom
case 'skip':
// SKIP atom
// SKIP atom
case 'wide':
// 64-bit expansion placeholder atom
// 'free', 'skip' and 'wide' are just padding, contains no useful data at all
break;
default:
$atomHierarchy = array();
$ThisFileInfo['quicktime']["{$atomname}"] = QuicktimeParseAtom($atomname, $atomsize, fread($fd, $atomsize), $ThisFileInfo, $offset, $atomHierarchy);
break;
}
$offset += $atomsize;
$atomcounter++;
}
if (!empty($ThisFileInfo['avdataend_tmp'])) {
// this value is assigned to a temp value and then erased because
// otherwise any atoms beyond the 'mdat' atom would not get parsed
$ThisFileInfo['avdataend'] = $ThisFileInfo['avdataend_tmp'];
unset($ThisFileInfo['avdataend_tmp']);
}
// Quicktime tags have highest priority
if (isset($ThisFileInfo['quicktime']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['quicktime']['comments'], $ThisFileInfo, true, true, true);
// add tag to array of tags
$ThisFileInfo['tags'][] = 'quicktime';
}
if (!isset($ThisFileInfo['bitrate']) && isset($ThisFileInfo['playtime_seconds'])) {
$ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['playtime_seconds'];
}
if (isset($ThisFileInfo['bitrate']) && !isset($ThisFileInfo['audio']['bitrate']) && !isset($ThisFileInfo['quicktime']['video'])) {
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['bitrate'];
}
return true;
}
function getMP3headerFilepointer(&$fd, &$MP3fileInfo)
{
// get all information about an MP3 file - ID3v1, ID3v2, Lyrics3, MPEG-audio
$MP3fileInfo['fileformat'] = '';
if (!$fd) {
$MP3fileInfo['error'] .= "\n" . 'Could not open file';
return FALSE;
} else {
fseek($fd, -128 - 9 - 6, SEEK_END);
$lyrics3_id3v1 = fread($fd, 128 + 9 + 6);
$lyrics3lsz = substr($lyrics3_id3v1, 0, 6);
$lyrics3end = substr($lyrics3_id3v1, 6, 9);
// LYRICSEND or LYRICS200
$id3v1tag = substr($lyrics3_id3v1, 15, 128);
if ($lyrics3end == 'LYRICSEND') {
// Lyrics3 v1 and ID3v1
$lyrics3size = 5100;
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, -128 - $lyrics3size, 1, $lyrics3size);
} else {
if ($lyrics3end == 'LYRICS200') {
// Lyrics3 v2 and ID3v1
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, -128 - $lyrics3size, 2, $lyrics3size);
} else {
if (substr($lyrics3_id3v1, strlen($lyrics3_id3v1) - 1 - 9, 9) == 'LYRICSEND') {
// Lyrics3 v1, no ID3v1 (I think according to Lyrics3 specs there MUST be ID3v1, but just in case :)
$lyrics3size = 5100;
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, 0 - $lyrics3size, 1, $lyrics3size);
} else {
if (substr($lyrics3_id3v1, strlen($lyrics3_id3v1) - 1 - 9, 9) == 'LYRICS200') {
// Lyrics3 v2, no ID3v1 (I think according to Lyrics3 specs there MUST be ID3v1, but just in case :)
$lyrics3size = $lyrics3lsz + 6 + strlen('LYRICS200');
// LSZ = lyrics + 'LYRICSBEGIN'; add 6-byte size field; add 'LYRICS200'
include_once GETID3_INCLUDEPATH . 'getid3.lyrics3.php';
getLyrics3Filepointer($MP3fileInfo, $fd, 0 - $lyrics3size, 2, $lyrics3size);
}
}
}
}
if (substr($id3v1tag, 0, 3) == 'TAG') {
include_once GETID3_INCLUDEPATH . 'getid3.id3v1.php';
$MP3fileInfo['id3']['id3v1'] = getID3v1Filepointer($fd);
$MP3fileInfo['fileformat'] = 'id3';
}
include_once GETID3_INCLUDEPATH . 'getid3.id3v2.php';
getID3v2Filepointer($fd, $MP3fileInfo);
if (isset($MP3fileInfo['id3']['id3v2']['header'])) {
$MP3fileInfo['fileformat'] = 'id3';
$audiodataoffset = $MP3fileInfo['id3']['id3v2']['headerlength'];
if (isset($MP3fileInfo['id3']['id3v2']['footer'])) {
$audiodataoffset += 10;
}
} else {
// no ID3v2 header
if (isset($MP3fileInfo['id3']['id3v2'])) {
unset($MP3fileInfo['id3']['id3v2']);
}
$audiodataoffset = 0;
}
if ($audiodataoffset < $MP3fileInfo['filesize']) {
getOnlyMPEGaudioInfo($fd, $MP3fileInfo, $audiodataoffset);
}
if (isset($MP3fileInfo['audiodataoffset']) && (isset($MP3fileInfo['id3']['id3v2']) && $MP3fileInfo['audiodataoffset'] > $MP3fileInfo['id3']['id3v2']['headerlength'] || !isset($MP3fileInfo['id3']['id3v2']) && $MP3fileInfo['audiodataoffset'] > 0)) {
$MP3fileInfo['error'] .= "\n" . 'Unknown data before synch ';
if (isset($MP3fileInfo['id3']['id3v2']['headerlength'])) {
$MP3fileInfo['error'] .= '(ID3v2 header ends at ' . $MP3fileInfo['id3']['id3v2']['headerlength'] . ', ';
} else {
$MP3fileInfo['error'] .= '(should be at beginning of file, ';
}
$MP3fileInfo['error'] .= 'synch detected at ' . $MP3fileInfo['audiodataoffset'] . ')';
}
if (!$MP3fileInfo['fileformat']) {
$MP3fileInfo['error'] .= "\n" . 'Synch not found';
unset($MP3fileInfo['audiodataoffset']);
unset($MP3fileInfo['fileformat']);
}
}
// if ($fd)
if (isset($MP3fileInfo['id3']) && !isset($MP3fileInfo['id3']['id3v2']) && !isset($MP3fileInfo['id3']['id3v1'])) {
unset($MP3fileInfo['id3']);
}
return TRUE;
}
function ParseRIFF(&$fd, $startoffset, $maxoffset, &$ThisFileInfo)
{
$maxoffset = min($maxoffset, $ThisFileInfo['avdataend']);
$RIFFchunk = false;
fseek($fd, $startoffset, SEEK_SET);
while (ftell($fd) < $maxoffset) {
$chunkname = fread($fd, 4);
$chunksize = EitherEndian2Int($ThisFileInfo, fread($fd, 4));
if ($chunksize % 2 != 0) {
// all structures are packed on word boundaries
$chunksize++;
}
switch ($chunkname) {
case 'LIST':
$listname = fread($fd, 4);
switch ($listname) {
case 'movi':
case 'rec ':
// skip over
$RIFFchunk["{$listname}"]['offset'] = ftell($fd) - 4;
$RIFFchunk["{$listname}"]['size'] = $chunksize;
fseek($fd, $chunksize - 4, SEEK_CUR);
break;
default:
if (!isset($RIFFchunk["{$listname}"])) {
$RIFFchunk["{$listname}"] = array();
}
$RIFFchunk["{$listname}"] = array_merge_recursive($RIFFchunk["{$listname}"], ParseRIFF($fd, ftell($fd), ftell($fd) + $chunksize - 4, $ThisFileInfo));
break;
}
break;
default:
$thisindex = 0;
if (isset($RIFFchunk["{$chunkname}"]) && is_array($RIFFchunk["{$chunkname}"])) {
$thisindex = count($RIFFchunk["{$chunkname}"]);
}
$RIFFchunk["{$chunkname}"][$thisindex]['offset'] = ftell($fd) - 8;
$RIFFchunk["{$chunkname}"][$thisindex]['size'] = $chunksize;
switch ($chunkname) {
case 'data':
$RIFFdataChunkContentsTest = fread($fd, 8);
if (strlen($RIFFdataChunkContentsTest) > 0 && $RIFFdataChunkContentsTest[0] == chr(0xff)) {
// Probably (but not guaranteed) that this is MP3 data
require_once GETID3_INCLUDEPATH . 'getid3.mp3.php';
if (MPEGaudioHeaderBytesValid(substr($RIFFdataChunkContentsTest, 0, 4))) {
$WhereWeWere = ftell($fd);
getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $RIFFchunk["{$chunkname}"][$thisindex]['offset'], false);
fseek($fd, $WhereWeWere, SEEK_SET);
if (isset($ThisFileInfo['mpeg']['audio'])) {
$ThisFileInfo['audio']['dataformat'] = 'mp' . strlen($ThisFileInfo['mpeg']['audio']['layer']);
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels'];
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'] * 1000;
$ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate'];
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitrate_mode']);
}
fseek($fd, $chunksize - 8, SEEK_CUR);
}
} else {
if (substr($RIFFdataChunkContentsTest, 0, 4) == 'wvpk') {
// This is WavPack data
$ThisFileInfo['wavpack']['offset'] = ftell($fd) - 8;
$ThisFileInfo['wavpack']['size'] = LittleEndian2Int(substr($RIFFdataChunkContentsTest, 4, 4));
$WavPackData = fread($fd, $ThisFileInfo['wavpack']['size']);
RIFFparseWavPackHeader($WavPackData, $ThisFileInfo);
fseek($fd, $chunksize - 8 - $ThisFileInfo['wavpack']['size'], SEEK_CUR);
} else {
// This is some other kind of data (quite possibly just PCM)
// do nothing special, just skip it
fseek($fd, $chunksize - 8, SEEK_CUR);
}
}
break;
case 'bext':
case 'cart':
case 'fmt ':
case 'MEXT':
case 'DISP':
// always read data in
$RIFFchunk["{$chunkname}"][$thisindex]['data'] = fread($fd, $chunksize);
break;
default:
// read data in if smaller than 2kB
if ($chunksize < 2048) {
$RIFFchunk["{$chunkname}"][$thisindex]['data'] = fread($fd, $chunksize);
} else {
fseek($fd, $chunksize, SEEK_CUR);
}
break;
}
break;
}
}
return $RIFFchunk;
}
function getRIFFHeaderFilepointer(&$fd, &$ThisFileInfo)
{
fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
$RIFFheader = fread($fd, 12);
switch (substr($RIFFheader, 0, 4)) {
case 'RIFF':
case 'SDSS':
// SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
$ThisFileInfo['fileformat'] = 'riff';
$ThisFileInfo['RIFF'][substr($RIFFheader, 8, 4)] = ParseRIFF($fd, $ThisFileInfo['avdataoffset'] + 12, $ThisFileInfo['avdataoffset'] + LittleEndian2Int(substr($RIFFheader, 4, 4)), $ThisFileInfo);
break;
default:
$ThisFileInfo['error'] .= "\n" . 'Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?)';
unset($ThisFileInfo['fileformat']);
return false;
break;
}
$streamindex = 0;
$arraykeys = array_keys($ThisFileInfo['RIFF']);
switch ($arraykeys[0]) {
case 'WAVE':
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
$ThisFileInfo['audio']['dataformat'] = 'wav';
if (isset($ThisFileInfo['RIFF']['WAVE']['fmt '][0]['data'])) {
$ThisFileInfo['RIFF']['audio'][$streamindex] = RIFFparseWAVEFORMATex($ThisFileInfo['RIFF']['WAVE']['fmt '][0]['data']);
if ($ThisFileInfo['RIFF']['audio'][$streamindex] == 0) {
$ThisFileInfo['error'] .= 'Corrupt RIFF file: bitrate_audio == zero';
return false;
}
$ThisFileInfo['RIFF']['raw']['fmt '] = $ThisFileInfo['RIFF']['audio'][$streamindex]['raw'];
unset($ThisFileInfo['RIFF']['audio'][$streamindex]['raw']);
$ThisFileInfo['audio'] = array_merge_noclobber($ThisFileInfo['audio'], $ThisFileInfo['RIFF']['audio'][$streamindex]);
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate'];
$ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']);
if (isset($ThisFileInfo['RIFF']['WAVE']['data'][0]['offset']) && isset($ThisFileInfo['RIFF']['raw']['fmt ']['wFormatTag'])) {
switch ($ThisFileInfo['RIFF']['raw']['fmt ']['wFormatTag']) {
case 85:
// LAME ACM
require_once GETID3_INCLUDEPATH . 'getid3.mp3.php';
getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $ThisFileInfo['RIFF']['WAVE']['data'][0]['offset'], false);
$ThisFileInfo['audio']['dataformat'] = 'mp3';
if (isset($ThisFileInfo['mpeg']['audio'])) {
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels'];
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'] * 1000;
$ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate'];
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitratemode']);
}
break;
default:
// do nothing
break;
}
}
}
if (isset($ThisFileInfo['RIFF']['WAVE']['rgad'][0]['data'])) {
require_once GETID3_INCLUDEPATH . 'getid3.rgad.php';
$rgadData = $ThisFileInfo['RIFF']['WAVE']['rgad'][0]['data'];
$ThisFileInfo['RIFF']['raw']['rgad']['fPeakAmplitude'] = LittleEndian2Float(substr($rgadData, 0, 4));
$ThisFileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust'] = LittleEndian2Int(substr($rgadData, 4, 2));
$ThisFileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust'] = LittleEndian2Int(substr($rgadData, 6, 2));
$nRadioRgAdjustBitstring = str_pad(Dec2Bin($ThisFileInfo['RIFF']['raw']['rgad']['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT);
$nAudiophileRgAdjustBitstring = str_pad(Dec2Bin($ThisFileInfo['RIFF']['raw']['rgad']['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT);
$ThisFileInfo['RIFF']['raw']['rgad']['radio']['name'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3));
$ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3));
$ThisFileInfo['RIFF']['raw']['rgad']['radio']['signbit'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1));
$ThisFileInfo['RIFF']['raw']['rgad']['radio']['adjustment'] = Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9));
$ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3));
$ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3));
$ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['signbit'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1));
$ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'] = Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9));
$ThisFileInfo['RIFF']['rgad']['peakamplitude'] = $ThisFileInfo['RIFF']['raw']['rgad']['fPeakAmplitude'];
if ($ThisFileInfo['RIFF']['raw']['rgad']['radio']['name'] != 0 && $ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator'] != 0) {
$ThisFileInfo['RIFF']['rgad']['radio']['name'] = RGADnameLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['name']);
$ThisFileInfo['RIFF']['rgad']['radio']['originator'] = RGADoriginatorLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['originator']);
$ThisFileInfo['RIFF']['rgad']['radio']['adjustment'] = RGADadjustmentLookup($ThisFileInfo['RIFF']['raw']['rgad']['radio']['adjustment'], $ThisFileInfo['RIFF']['raw']['rgad']['radio']['signbit']);
}
if ($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name'] != 0 && $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator'] != 0) {
$ThisFileInfo['RIFF']['rgad']['audiophile']['name'] = RGADnameLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['name']);
$ThisFileInfo['RIFF']['rgad']['audiophile']['originator'] = RGADoriginatorLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['originator']);
$ThisFileInfo['RIFF']['rgad']['audiophile']['adjustment'] = RGADadjustmentLookup($ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['adjustment'], $ThisFileInfo['RIFF']['raw']['rgad']['audiophile']['signbit']);
}
}
if (isset($ThisFileInfo['RIFF']['WAVE']['fact'][0]['data'])) {
$ThisFileInfo['RIFF']['raw']['fact']['NumberOfSamples'] = LittleEndian2Int(substr($ThisFileInfo['RIFF']['WAVE']['fact'][0]['data'], 0, 4));
if (isset($ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec'] > 0) {
$ThisFileInfo['playtime_seconds'] = (double) $ThisFileInfo['RIFF']['raw']['fact']['NumberOfSamples'] / $ThisFileInfo['RIFF']['raw']['fmt ']['nSamplesPerSec'];
}
if (isset($ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) && $ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec']) {
$ThisFileInfo['audio']['bitrate'] = CastAsInt($ThisFileInfo['RIFF']['raw']['fmt ']['nAvgBytesPerSec'] * 8);
}
}
if (!isset($ThisFileInfo['audio']['bitrate']) && isset($ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate'])) {
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['RIFF']['audio'][$streamindex]['bitrate'];
$ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']);
}
break;
case 'AVI ':
$ThisFileInfo['video']['bitrate_mode'] = 'cbr';
$ThisFileInfo['video']['dataformat'] = 'avi';
$ThisFileInfo['mime_type'] = 'video/avi';
if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['avih'][$streamindex]['data'])) {
$avihData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['avih'][$streamindex]['data'];
$ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] = LittleEndian2Int(substr($avihData, 0, 4));
// frame display rate (or 0L)
if ($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] == 0) {
$ThisFileInfo['error'] .= 'Corrupt RIFF file: avih.dwMicroSecPerFrame == zero';
return false;
}
$ThisFileInfo['RIFF']['raw']['avih']['dwMaxBytesPerSec'] = LittleEndian2Int(substr($avihData, 4, 4));
// max. transfer rate
$ThisFileInfo['RIFF']['raw']['avih']['dwPaddingGranularity'] = LittleEndian2Int(substr($avihData, 8, 4));
// pad to multiples of this size; normally 2K.
$ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] = LittleEndian2Int(substr($avihData, 12, 4));
// the ever-present flags
$ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames'] = LittleEndian2Int(substr($avihData, 16, 4));
// # frames in file
$ThisFileInfo['RIFF']['raw']['avih']['dwInitialFrames'] = LittleEndian2Int(substr($avihData, 20, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwStreams'] = LittleEndian2Int(substr($avihData, 24, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwSuggestedBufferSize'] = LittleEndian2Int(substr($avihData, 28, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwWidth'] = LittleEndian2Int(substr($avihData, 32, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwHeight'] = LittleEndian2Int(substr($avihData, 36, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwScale'] = LittleEndian2Int(substr($avihData, 40, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwRate'] = LittleEndian2Int(substr($avihData, 44, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwStart'] = LittleEndian2Int(substr($avihData, 48, 4));
$ThisFileInfo['RIFF']['raw']['avih']['dwLength'] = LittleEndian2Int(substr($avihData, 52, 4));
$ThisFileInfo['RIFF']['raw']['avih']['flags']['hasindex'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10);
$ThisFileInfo['RIFF']['raw']['avih']['flags']['mustuseindex'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20);
$ThisFileInfo['RIFF']['raw']['avih']['flags']['interleaved'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x100);
$ThisFileInfo['RIFF']['raw']['avih']['flags']['trustcktype'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x800);
$ThisFileInfo['RIFF']['raw']['avih']['flags']['capturedfile'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x10000);
$ThisFileInfo['RIFF']['raw']['avih']['flags']['copyrighted'] = (bool) ($ThisFileInfo['RIFF']['raw']['avih']['dwFlags'] & 0x20010);
$ThisFileInfo['RIFF']['video'][$streamindex]['frame_width'] = $ThisFileInfo['RIFF']['raw']['avih']['dwWidth'];
$ThisFileInfo['RIFF']['video'][$streamindex]['frame_height'] = $ThisFileInfo['RIFF']['raw']['avih']['dwHeight'];
$ThisFileInfo['RIFF']['video'][$streamindex]['frame_rate'] = round(1000000 / $ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'], 3);
if (!isset($ThisFileInfo['video']['resolution_x'])) {
$ThisFileInfo['video']['resolution_x'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_width'];
}
if (!isset($ThisFileInfo['video']['resolution_y'])) {
$ThisFileInfo['video']['resolution_y'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_height'];
}
$ThisFileInfo['video']['frame_rate'] = $ThisFileInfo['RIFF']['video'][$streamindex]['frame_rate'];
}
if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][0]['data'])) {
if (is_array($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'])) {
for ($i = 0; $i < count($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh']); $i++) {
if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][$i]['data'])) {
$strhData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strh'][$i]['data'];
$strhfccType = substr($strhData, 0, 4);
if (isset($ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strf'][$i]['data'])) {
$strfData = $ThisFileInfo['RIFF']['AVI ']['hdrl']['strl']['strf'][$i]['data'];
switch ($strhfccType) {
case 'auds':
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
$ThisFileInfo['audio']['dataformat'] = 'wav';
if (isset($ThisFileInfo['RIFF']['audio']) && is_array($ThisFileInfo['RIFF']['audio'])) {
$streamindex = count($ThisFileInfo['RIFF']['audio']);
}
$ThisFileInfo['RIFF']['audio'][$streamindex] = RIFFparseWAVEFORMATex($strfData);
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex] = $ThisFileInfo['RIFF']['audio'][$streamindex]['raw'];
unset($ThisFileInfo['RIFF']['audio'][$streamindex]['raw']);
$ThisFileInfo['audio'] = array_merge_noclobber($ThisFileInfo['audio'], $ThisFileInfo['RIFF']['audio'][$streamindex]);
switch ($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['wFormatTag']) {
case 85:
$ThisFileInfo['audio']['dataformat'] = 'mp3';
break;
case 8192:
$ThisFileInfo['audio']['dataformat'] = 'ac3';
break;
default:
$ThisFileInfo['audio']['dataformat'] = 'wav';
break;
}
break;
case 'iavs':
case 'vids':
$ThisFileInfo['RIFF']['raw']['strh'][$i]['fccType'] = substr($strhData, 0, 4);
// same as $strhfccType;
$ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler'] = substr($strhData, 4, 4);
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwFlags'] = LittleEndian2Int(substr($strhData, 8, 4));
// Contains AVITF_* flags
$ThisFileInfo['RIFF']['raw']['strh'][$i]['wPriority'] = LittleEndian2Int(substr($strhData, 12, 2));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['wLanguage'] = LittleEndian2Int(substr($strhData, 14, 2));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwInitialFrames'] = LittleEndian2Int(substr($strhData, 16, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwScale'] = LittleEndian2Int(substr($strhData, 20, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwRate'] = LittleEndian2Int(substr($strhData, 24, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwStart'] = LittleEndian2Int(substr($strhData, 28, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwLength'] = LittleEndian2Int(substr($strhData, 32, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwSuggestedBufferSize'] = LittleEndian2Int(substr($strhData, 36, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwQuality'] = LittleEndian2Int(substr($strhData, 40, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['dwSampleSize'] = LittleEndian2Int(substr($strhData, 44, 4));
$ThisFileInfo['RIFF']['raw']['strh'][$i]['rcFrame'] = LittleEndian2Int(substr($strhData, 48, 4));
$ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strh'][$i]['fccHandler']);
if (!$ThisFileInfo['RIFF']['video'][$streamindex]['codec'] && isset($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) && RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'])) {
$ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']);
}
$ThisFileInfo['video']['codec'] = $ThisFileInfo['RIFF']['video'][$streamindex]['codec'];
switch ($strhfccType) {
case 'vids':
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biSize'] = LittleEndian2Int(substr($strfData, 0, 4));
// number of bytes required by the BITMAPINFOHEADER structure
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biWidth'] = LittleEndian2Int(substr($strfData, 4, 4));
// width of the bitmap in pixels
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biHeight'] = LittleEndian2Int(substr($strfData, 8, 4));
// height of the bitmap in pixels. If biHeight is positive, the bitmap is a 'bottom-up' DIB and its origin is the lower left corner. If biHeight is negative, the bitmap is a 'top-down' DIB and its origin is the upper left corner
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biPlanes'] = LittleEndian2Int(substr($strfData, 12, 2));
// number of color planes on the target device. In most cases this value must be set to 1
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biBitCount'] = LittleEndian2Int(substr($strfData, 14, 2));
// Specifies the number of bits per pixels
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'] = substr($strfData, 16, 4);
//
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biSizeImage'] = LittleEndian2Int(substr($strfData, 20, 4));
// size of the bitmap data section of the image (the actual pixel data, excluding BITMAPINFOHEADER and RGBQUAD structures)
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biXPelsPerMeter'] = LittleEndian2Int(substr($strfData, 24, 4));
// horizontal resolution, in pixels per metre, of the target device
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biYPelsPerMeter'] = LittleEndian2Int(substr($strfData, 28, 4));
// vertical resolution, in pixels per metre, of the target device
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biClrUsed'] = LittleEndian2Int(substr($strfData, 32, 4));
// actual number of color indices in the color table used by the bitmap. If this value is zero, the bitmap uses the maximum number of colors corresponding to the value of the biBitCount member for the compression mode specified by biCompression
$ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['biClrImportant'] = LittleEndian2Int(substr($strfData, 36, 4));
// number of color indices that are considered important for displaying the bitmap. If this value is zero, all colors are important
if ($ThisFileInfo['RIFF']['video'][$streamindex]['codec'] == 'DV') {
$ThisFileInfo['RIFF']['video'][$streamindex]['dv_type'] = 2;
}
break;
case 'iavs':
$ThisFileInfo['RIFF']['video'][$streamindex]['dv_type'] = 1;
break;
}
break;
default:
$ThisFileInfo['warning'] .= "\n" . 'Unhandled fccType for stream (' . $i . '): "' . $strhfccType . '"';
break;
}
}
}
if (isset($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']) && RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc'])) {
$ThisFileInfo['RIFF']['video'][$streamindex]['codec'] = RIFFfourccLookup($ThisFileInfo['RIFF']['raw']['strf']["{$strhfccType}"][$streamindex]['fourcc']);
$ThisFileInfo['video']['codec'] = $ThisFileInfo['RIFF']['video'][$streamindex]['codec'];
}
}
}
}
break;
case 'CDDA':
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
$ThisFileInfo['audio']['dataformat'] = 'cda';
unset($ThisFileInfo['mime_type']);
if (isset($ThisFileInfo['RIFF']['CDDA']['fmt '][0]['data'])) {
$fmtData = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['data'];
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown1'] = LittleEndian2Int(substr($fmtData, 0, 2));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['track_num'] = LittleEndian2Int(substr($fmtData, 2, 2));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['disc_id'] = LittleEndian2Int(substr($fmtData, 4, 4));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_frame'] = LittleEndian2Int(substr($fmtData, 8, 4));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_frames'] = LittleEndian2Int(substr($fmtData, 12, 4));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown6'] = LittleEndian2Int(substr($fmtData, 16, 4));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['unknown7'] = LittleEndian2Int(substr($fmtData, 20, 4));
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_seconds'] = (double) $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['start_offset_frame'] / 75;
$ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_seconds'] = (double) $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_frames'] / 75;
$ThisFileInfo['comments']['track'] = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['track_num'];
$ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['CDDA']['fmt '][0]['playtime_seconds'];
// hardcoded data for CD-audio
$ThisFileInfo['audio']['sample_rate'] = 44100;
$ThisFileInfo['audio']['channels'] = 2;
$ThisFileInfo['audio']['bits_per_sample'] = 16;
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['audio']['sample_rate'] * $ThisFileInfo['audio']['channels'] * $ThisFileInfo['audio']['bits_per_sample'];
$ThisFileInfo['audio']['bitrate_mode'] = 'cbr';
}
break;
default:
unset($ThisFileInfo['fileformat']);
break;
}
if (isset($ThisFileInfo['RIFF']['WAVE']['DISP']) && is_array($ThisFileInfo['RIFF']['WAVE']['DISP'])) {
$ThisFileInfo['tags'][] = 'riff';
$ThisFileInfo['RIFF']['comments']['title'][] = trim(substr($ThisFileInfo['RIFF']['WAVE']['DISP'][count($ThisFileInfo['RIFF']['WAVE']['DISP']) - 1]['data'], 4));
}
if (isset($ThisFileInfo['RIFF']['WAVE']['INFO']) && is_array($ThisFileInfo['RIFF']['WAVE']['INFO'])) {
$ThisFileInfo['tags'][] = 'riff';
$RIFFinfoKeyLookup = array('IART' => 'artist', 'IGNR' => 'genre', 'ICMT' => 'comment', 'ICOP' => 'copyright', 'IENG' => 'engineers', 'IKEY' => 'keywords', 'IMED' => 'orignalmedium', 'INAM' => 'name', 'ISRC' => 'sourcesupplier', 'ITCH' => 'digitizer', 'ISBJ' => 'subject', 'ISRF' => 'digitizationsource');
foreach ($RIFFinfoKeyLookup as $key => $value) {
foreach ($ThisFileInfo['RIFF']['WAVE']['INFO']["{$key}"] as $commentid => $commentdata) {
if (trim($commentdata['data']) != '') {
$ThisFileInfo['RIFF']['comments']["{$value}"][] = trim($commentdata['data']);
}
}
}
}
if (!empty($ThisFileInfo['RIFF']['comments'])) {
CopyFormatCommentsToRootComments($ThisFileInfo['RIFF']['comments'], $ThisFileInfo, true, true, true);
}
if (!isset($ThisFileInfo['playtime_seconds'])) {
$ThisFileInfo['playtime_seconds'] = 0;
}
if (isset($ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames']) && isset($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'])) {
$ThisFileInfo['playtime_seconds'] = $ThisFileInfo['RIFF']['raw']['avih']['dwTotalFrames'] * ($ThisFileInfo['RIFF']['raw']['avih']['dwMicroSecPerFrame'] / 1000000);
}
if ($ThisFileInfo['playtime_seconds'] > 0) {
if (isset($ThisFileInfo['RIFF']['audio']) && isset($ThisFileInfo['RIFF']['video'])) {
if (!isset($ThisFileInfo['bitrate'])) {
$ThisFileInfo['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8;
}
} elseif (isset($ThisFileInfo['RIFF']['audio']) && !isset($ThisFileInfo['RIFF']['video'])) {
if (!isset($ThisFileInfo['audio']['bitrate'])) {
$ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8;
}
} elseif (!isset($ThisFileInfo['RIFF']['audio']) && isset($ThisFileInfo['RIFF']['video'])) {
if (!isset($ThisFileInfo['video']['bitrate'])) {
$ThisFileInfo['video']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8;
}
}
}
if (isset($ThisFileInfo['RIFF']['video']) && isset($ThisFileInfo['audio']['bitrate']) && $ThisFileInfo['audio']['bitrate'] > 0 && $ThisFileInfo['playtime_seconds'] > 0) {
$ThisFileInfo['audio']['bitrate'] = 0;
$ThisFileInfo['video']['bitrate'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) / $ThisFileInfo['playtime_seconds'] * 8;
foreach ($ThisFileInfo['RIFF']['audio'] as $channelnumber => $audioinfoarray) {
$ThisFileInfo['video']['bitrate'] -= $audioinfoarray['bitrate'];
$ThisFileInfo['audio']['bitrate'] += $audioinfoarray['bitrate'];
}
if ($ThisFileInfo['video']['bitrate'] <= 0) {
unset($ThisFileInfo['video']['bitrate']);
}
if ($ThisFileInfo['audio']['bitrate'] <= 0) {
unset($ThisFileInfo['audio']['bitrate']);
}
}
if (!empty($ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample'])) {
$ThisFileInfo['audio']['bits_per_sample'] = $ThisFileInfo['RIFF']['raw']['fmt ']['nBitsPerSample'];
}
// Skip RIFF header
$ThisFileInfo['avdataoffset'] += 44;
return true;
}
