public function ParseRIFF($startoffset, $maxoffset)
{
$info =& $this->getid3->info;
$RIFFchunk = false;
$FoundAllChunksWeNeed = false;
try {
$this->fseek($startoffset);
$maxoffset = min($maxoffset, $info['avdataend']);
while ($this->ftell() < $maxoffset) {
$chunknamesize = $this->fread(8);
//$chunkname = substr($chunknamesize, 0, 4);
$chunkname = str_replace("", '_', substr($chunknamesize, 0, 4));
// note: chunk names of 4 null bytes do appear to be legal (has been observed inside INFO and PRMI chunks, for example), but makes traversing array keys more difficult
$chunksize = $this->EitherEndian2Int(substr($chunknamesize, 4, 4));
//if (strlen(trim($chunkname, "\x00")) < 4) {
if (strlen($chunkname) < 4) {
$this->error('Expecting chunk name at offset ' . ($this->ftell() - 8) . ' but found nothing. Aborting RIFF parsing.');
break;
}
if ($chunksize == 0 && $chunkname != 'JUNK') {
$this->warning('Chunk (' . $chunkname . ') size at offset ' . ($this->ftell() - 4) . ' is zero. Aborting RIFF parsing.');
break;
}
if ($chunksize % 2 != 0) {
// all structures are packed on word boundaries
$chunksize++;
}
switch ($chunkname) {
case 'LIST':
$listname = $this->fread(4);
if (preg_match('#^(movi|rec )$#i', $listname)) {
$RIFFchunk[$listname]['offset'] = $this->ftell() - 4;
$RIFFchunk[$listname]['size'] = $chunksize;
if (!$FoundAllChunksWeNeed) {
$WhereWeWere = $this->ftell();
$AudioChunkHeader = $this->fread(12);
$AudioChunkStreamNum = substr($AudioChunkHeader, 0, 2);
$AudioChunkStreamType = substr($AudioChunkHeader, 2, 2);
$AudioChunkSize = getid3_lib::LittleEndian2Int(substr($AudioChunkHeader, 4, 4));
if ($AudioChunkStreamType == 'wb') {
$FirstFourBytes = substr($AudioChunkHeader, 8, 4);
if (preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', $FirstFourBytes)) {
// MP3
if (getid3_mp3::MPEGaudioHeaderBytesValid($FirstFourBytes)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $this->ftell() - 4;
$getid3_temp->info['avdataend'] = $this->ftell() + $AudioChunkSize;
$getid3_mp3 = new getid3_mp3($getid3_temp, __CLASS__);
$getid3_mp3->getOnlyMPEGaudioInfo($getid3_temp->info['avdataoffset'], false);
if (isset($getid3_temp->info['mpeg']['audio'])) {
$info['mpeg']['audio'] = $getid3_temp->info['mpeg']['audio'];
$info['audio'] = $getid3_temp->info['audio'];
$info['audio']['dataformat'] = 'mp' . $info['mpeg']['audio']['layer'];
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
$info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
//$info['bitrate'] = $info['audio']['bitrate'];
}
unset($getid3_temp, $getid3_mp3);
}
} elseif (strpos($FirstFourBytes, getid3_ac3::syncword) === 0) {
// AC3
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $this->ftell() - 4;
$getid3_temp->info['avdataend'] = $this->ftell() + $AudioChunkSize;
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $key => $value) {
$info['warning'][] = $value;
}
}
}
unset($getid3_temp, $getid3_ac3);
}
}
$FoundAllChunksWeNeed = true;
$this->fseek($WhereWeWere);
}
$this->fseek($chunksize - 4, SEEK_CUR);
} else {
if (!isset($RIFFchunk[$listname])) {
$RIFFchunk[$listname] = array();
}
$LISTchunkParent = $listname;
$LISTchunkMaxOffset = $this->ftell() - 4 + $chunksize;
if ($parsedChunk = $this->ParseRIFF($this->ftell(), $LISTchunkMaxOffset)) {
$RIFFchunk[$listname] = array_merge_recursive($RIFFchunk[$listname], $parsedChunk);
}
}
break;
default:
if (preg_match('#^[0-9]{2}(wb|pc|dc|db)$#', $chunkname)) {
$this->fseek($chunksize, SEEK_CUR);
break;
}
$thisindex = 0;
if (isset($RIFFchunk[$chunkname]) && is_array($RIFFchunk[$chunkname])) {
$thisindex = count($RIFFchunk[$chunkname]);
}
$RIFFchunk[$chunkname][$thisindex]['offset'] = $this->ftell() - 8;
$RIFFchunk[$chunkname][$thisindex]['size'] = $chunksize;
switch ($chunkname) {
case 'data':
$info['avdataoffset'] = $this->ftell();
$info['avdataend'] = $info['avdataoffset'] + $chunksize;
$testData = $this->fread(36);
if ($testData === '') {
break;
}
if (preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', substr($testData, 0, 4))) {
// Probably is MP3 data
if (getid3_mp3::MPEGaudioHeaderBytesValid(substr($testData, 0, 4))) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['avdataoffset'];
$getid3_temp->info['avdataend'] = $info['avdataend'];
$getid3_mp3 = new getid3_mp3($getid3_temp, __CLASS__);
$getid3_mp3->getOnlyMPEGaudioInfo($info['avdataoffset'], false);
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['mpeg'] = $getid3_temp->info['mpeg'];
}
unset($getid3_temp, $getid3_mp3);
}
} elseif (($isRegularAC3 = substr($testData, 0, 2) == getid3_ac3::syncword) || substr($testData, 8, 2) == strrev(getid3_ac3::syncword)) {
// This is probably AC-3 data
$getid3_temp = new getID3();
if ($isRegularAC3) {
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['avdataoffset'];
$getid3_temp->info['avdataend'] = $info['avdataend'];
}
$getid3_ac3 = new getid3_ac3($getid3_temp);
if ($isRegularAC3) {
$getid3_ac3->Analyze();
} else {
// Dolby Digital WAV
// AC-3 content, but not encoded in same format as normal AC-3 file
// For one thing, byte order is swapped
$ac3_data = '';
for ($i = 0; $i < 28; $i += 2) {
$ac3_data .= substr($testData, 8 + $i + 1, 1);
$ac3_data .= substr($testData, 8 + $i + 0, 1);
}
$getid3_ac3->AnalyzeString($ac3_data);
}
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warning('getid3_ac3() says: [' . $newerror . ']');
}
}
}
unset($getid3_temp, $getid3_ac3);
} elseif (preg_match('/^(' . implode('|', array_map('preg_quote', getid3_dts::$syncwords)) . ')/', $testData)) {
// This is probably DTS data
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['avdataoffset'];
$getid3_dts = new getid3_dts($getid3_temp);
$getid3_dts->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['dts'] = $getid3_temp->info['dts'];
$info['playtime_seconds'] = $getid3_temp->info['playtime_seconds'];
// may not match RIFF calculations since DTS-WAV often used 14/16 bit-word packing
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warning('getid3_dts() says: [' . $newerror . ']');
}
}
}
unset($getid3_temp, $getid3_dts);
} elseif (substr($testData, 0, 4) == 'wvpk') {
// This is WavPack data
$info['wavpack']['offset'] = $info['avdataoffset'];
$info['wavpack']['size'] = getid3_lib::LittleEndian2Int(substr($testData, 4, 4));
$this->parseWavPackHeader(substr($testData, 8, 28));
} else {
// This is some other kind of data (quite possibly just PCM)
// do nothing special, just skip it
}
$nextoffset = $info['avdataend'];
$this->fseek($nextoffset);
break;
case 'iXML':
case 'bext':
case 'cart':
case 'fmt ':
case 'strh':
case 'strf':
case 'indx':
case 'MEXT':
case 'DISP':
// always read data in
// always read data in
case 'JUNK':
// should be: never read data in
// but some programs write their version strings in a JUNK chunk (e.g. VirtualDub, AVIdemux, etc)
if ($chunksize < 1048576) {
if ($chunksize > 0) {
$RIFFchunk[$chunkname][$thisindex]['data'] = $this->fread($chunksize);
if ($chunkname == 'JUNK') {
if (preg_match('#^([\\x20-\\x7F]+)#', $RIFFchunk[$chunkname][$thisindex]['data'], $matches)) {
// only keep text characters [chr(32)-chr(127)]
$info['riff']['comments']['junk'][] = trim($matches[1]);
}
// but if nothing there, ignore
// remove the key in either case
unset($RIFFchunk[$chunkname][$thisindex]['data']);
}
}
} else {
$this->warning('Chunk "' . $chunkname . '" at offset ' . $this->ftell() . ' is unexpectedly larger than 1MB (claims to be ' . number_format($chunksize) . ' bytes), skipping data');
$this->fseek($chunksize, SEEK_CUR);
}
break;
//case 'IDVX':
// $info['divxtag']['comments'] = self::ParseDIVXTAG($this->fread($chunksize));
// break;
//case 'IDVX':
// $info['divxtag']['comments'] = self::ParseDIVXTAG($this->fread($chunksize));
// break;
default:
if (!empty($LISTchunkParent) && $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'] <= $LISTchunkMaxOffset) {
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['size'] = $RIFFchunk[$chunkname][$thisindex]['size'];
unset($RIFFchunk[$chunkname][$thisindex]['offset']);
unset($RIFFchunk[$chunkname][$thisindex]['size']);
if (isset($RIFFchunk[$chunkname][$thisindex]) && empty($RIFFchunk[$chunkname][$thisindex])) {
unset($RIFFchunk[$chunkname][$thisindex]);
}
if (isset($RIFFchunk[$chunkname]) && empty($RIFFchunk[$chunkname])) {
unset($RIFFchunk[$chunkname]);
}
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['data'] = $this->fread($chunksize);
} elseif ($chunksize < 2048) {
// only read data in if smaller than 2kB
$RIFFchunk[$chunkname][$thisindex]['data'] = $this->fread($chunksize);
} else {
$this->fseek($chunksize, SEEK_CUR);
}
break;
}
break;
}
}
} catch (getid3_exception $e) {
if ($e->getCode() == 10) {
$this->warning('RIFF parser: ' . $e->getMessage());
} else {
throw $e;
}
}
return $RIFFchunk;
}
public function Analyze()
{
$getid3 = $this->getid3;
// http://www.atsc.org/standards/a_52a.pdf
$getid3->info['fileformat'] = 'ac3';
$getid3->info['audio']['dataformat'] = 'ac3';
$getid3->info['audio']['bitrate_mode'] = 'cbr';
$getid3->info['audio']['lossless'] = false;
$getid3->info['ac3']['raw']['bsi'] = array();
$info_ac3 =& $getid3->info['ac3'];
$info_ac3_raw =& $info_ac3['raw'];
$info_ac3_raw_bsi =& $info_ac3_raw['bsi'];
// An AC-3 serial coded audio bit stream is made up of a sequence of synchronization frames
// Each synchronization frame contains 6 coded audio blocks (AB), each of which represent 256
// new audio samples per channel. A synchronization information (SI) header at the beginning
// of each frame contains information needed to acquire and maintain synchronization. A
// bit stream information (BSI) header follows SI, and contains parameters describing the coded
// audio service. The coded audio blocks may be followed by an auxiliary data (Aux) field. At the
// end of each frame is an error check field that includes a CRC word for error detection. An
// additional CRC word is located in the SI header, the use of which, by a decoder, is optional.
//
// syncinfo() | bsi() | AB0 | AB1 | AB2 | AB3 | AB4 | AB5 | Aux | CRC
$this->fseek($getid3->info['avdataoffset'], SEEK_SET);
$ac3_header['syncinfo'] = $this->fread(5);
$info_ac3_raw['synchinfo']['synchword'] = substr($ac3_header['syncinfo'], 0, 2);
if ($info_ac3_raw['synchinfo']['synchword'] != "\vw") {
throw new getid3_exception('Expecting "\\x0B\\x77" at offset ' . $getid3->info['avdataoffset'] . ', found \\x' . strtoupper(dechex($ac3_header['syncinfo'][0])) . '\\x' . strtoupper(dechex($ac3_header['syncinfo'][1])) . ' instead');
}
// syncinfo() {
// syncword 16
// crc1 16
// fscod 2
// frmsizecod 6
// } /* end of syncinfo */
$info_ac3_raw['synchinfo']['crc1'] = getid3_lib::LittleEndian2Int(substr($ac3_header['syncinfo'], 2, 2));
$ac3_synchinfo_fscod_frmsizecod = getid3_lib::LittleEndian2Int(substr($ac3_header['syncinfo'], 4, 1));
$info_ac3_raw['synchinfo']['fscod'] = ($ac3_synchinfo_fscod_frmsizecod & 0xc0) >> 6;
$info_ac3_raw['synchinfo']['frmsizecod'] = $ac3_synchinfo_fscod_frmsizecod & 0x3f;
$info_ac3['sample_rate'] = getid3_ac3::AC3sampleRateCodeLookup($info_ac3_raw['synchinfo']['fscod']);
if ($info_ac3_raw['synchinfo']['fscod'] <= 3) {
$getid3->info['audio']['sample_rate'] = $info_ac3['sample_rate'];
}
$info_ac3['frame_length'] = getid3_ac3::AC3frameSizeLookup($info_ac3_raw['synchinfo']['frmsizecod'], $info_ac3_raw['synchinfo']['fscod']);
$info_ac3['bitrate'] = getid3_ac3::AC3bitrateLookup($info_ac3_raw['synchinfo']['frmsizecod']);
$getid3->info['audio']['bitrate'] = $info_ac3['bitrate'];
$ac3_header['bsi'] = getid3_lib::BigEndian2Bin($this->fread(15));
$info_ac3_raw_bsi['bsid'] = bindec(substr($ac3_header['bsi'], 0, 5));
if ($info_ac3_raw_bsi['bsid'] > 8) {
// Decoders which can decode version 8 will thus be able to decode version numbers less than 8.
// If this standard is extended by the addition of additional elements or features, a value of bsid greater than 8 will be used.
// Decoders built to this version of the standard will not be able to decode versions with bsid greater than 8.
throw new getid3_exception('Bit stream identification is version ' . $info_ac3_raw_bsi['bsid'] . ', but getID3() only understands up to version 8');
}
$info_ac3_raw_bsi['bsmod'] = bindec(substr($ac3_header['bsi'], 5, 3));
$info_ac3_raw_bsi['acmod'] = bindec(substr($ac3_header['bsi'], 8, 3));
$info_ac3['service_type'] = getid3_ac3::AC3serviceTypeLookup($info_ac3_raw_bsi['bsmod'], $info_ac3_raw_bsi['acmod']);
$ac3_coding_mode = getid3_ac3::AC3audioCodingModeLookup($info_ac3_raw_bsi['acmod']);
foreach ($ac3_coding_mode as $key => $value) {
$info_ac3[$key] = $value;
}
switch ($info_ac3_raw_bsi['acmod']) {
case 0:
case 1:
$getid3->info['audio']['channelmode'] = 'mono';
break;
case 3:
case 4:
$getid3->info['audio']['channelmode'] = 'stereo';
break;
default:
$getid3->info['audio']['channelmode'] = 'surround';
break;
}
$getid3->info['audio']['channels'] = $info_ac3['num_channels'];
$offset = 11;
if ($info_ac3_raw_bsi['acmod'] & 0x1) {
// If the lsb of acmod is a 1, center channel is in use and cmixlev follows in the bit stream.
$info_ac3_raw_bsi['cmixlev'] = bindec(substr($ac3_header['bsi'], $offset, 2));
$info_ac3['center_mix_level'] = getid3_ac3::AC3centerMixLevelLookup($info_ac3_raw_bsi['cmixlev']);
$offset += 2;
}
if ($info_ac3_raw_bsi['acmod'] & 0x4) {
// If the msb of acmod is a 1, surround channels are in use and surmixlev follows in the bit stream.
$info_ac3_raw_bsi['surmixlev'] = bindec(substr($ac3_header['bsi'], $offset, 2));
$info_ac3['surround_mix_level'] = getid3_ac3::AC3surroundMixLevelLookup($info_ac3_raw_bsi['surmixlev']);
$offset += 2;
}
if ($info_ac3_raw_bsi['acmod'] == 0x2) {
// When operating in the two channel mode, this 2-bit code indicates whether or not the program has been encoded in Dolby Surround.
$info_ac3_raw_bsi['dsurmod'] = bindec(substr($ac3_header['bsi'], $offset, 2));
$info_ac3['dolby_surround_mode'] = getid3_ac3::AC3dolbySurroundModeLookup($info_ac3_raw_bsi['dsurmod']);
$offset += 2;
}
$info_ac3_raw_bsi['lfeon'] = $ac3_header['bsi'][$offset++] == '1';
$info_ac3['lfe_enabled'] = $info_ac3_raw_bsi['lfeon'];
if ($info_ac3_raw_bsi['lfeon']) {
$getid3->info['audio']['channels'] .= '.1';
}
$info_ac3['channels_enabled'] = getid3_ac3::AC3channelsEnabledLookup($info_ac3_raw_bsi['acmod'], $info_ac3_raw_bsi['lfeon']);
// This indicates how far the average dialogue level is below digital 100 percent. Valid values are 1–31.
// The value of 0 is reserved. The values of 1 to 31 are interpreted as -1 dB to -31 dB with respect to digital 100 percent.
$info_ac3_raw_bsi['dialnorm'] = bindec(substr($ac3_header['bsi'], $offset, 5));
$offset += 5;
$info_ac3['dialogue_normalization'] = '-' . $info_ac3_raw_bsi['dialnorm'] . 'dB';
$info_ac3_raw_bsi['compre_flag'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['compre_flag']) {
$info_ac3_raw_bsi['compr'] = bindec(substr($ac3_header['bsi'], $offset, 8));
$offset += 8;
$info_ac3['heavy_compression'] = getid3_ac3::AC3heavyCompression($info_ac3_raw_bsi['compr']);
}
$info_ac3_raw_bsi['langcode_flag'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['langcode_flag']) {
$info_ac3_raw_bsi['langcod'] = bindec(substr($ac3_header['bsi'], $offset, 8));
$offset += 8;
}
$info_ac3_raw_bsi['audprodie'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['audprodie']) {
$info_ac3_raw_bsi['mixlevel'] = bindec(substr($ac3_header['bsi'], $offset, 5));
$offset += 5;
$info_ac3_raw_bsi['roomtyp'] = bindec(substr($ac3_header['bsi'], $offset, 2));
$offset += 2;
$info_ac3['mixing_level'] = 80 + $info_ac3_raw_bsi['mixlevel'] . 'dB';
$info_ac3['room_type'] = getid3_ac3::AC3roomTypeLookup($info_ac3_raw_bsi['roomtyp']);
}
if ($info_ac3_raw_bsi['acmod'] == 0x0) {
// If acmod is 0, then two completely independent program channels (dual mono)
// are encoded into the bit stream, and are referenced as Ch1, Ch2. In this case,
// a number of additional items are present in BSI or audblk to fully describe Ch2.
// This indicates how far the average dialogue level is below digital 100 percent. Valid values are 1–31.
// The value of 0 is reserved. The values of 1 to 31 are interpreted as -1 dB to -31 dB with respect to digital 100 percent.
$info_ac3_raw_bsi['dialnorm2'] = bindec(substr($ac3_header['bsi'], $offset, 5));
$offset += 5;
$info_ac3['dialogue_normalization2'] = '-' . $info_ac3_raw_bsi['dialnorm2'] . 'dB';
$info_ac3_raw_bsi['compre_flag2'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['compre_flag2']) {
$info_ac3_raw_bsi['compr2'] = bindec(substr($ac3_header['bsi'], $offset, 8));
$offset += 8;
$info_ac3['heavy_compression2'] = getid3_ac3::AC3heavyCompression($info_ac3_raw_bsi['compr2']);
}
$info_ac3_raw_bsi['langcode_flag2'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['langcode_flag2']) {
$info_ac3_raw_bsi['langcod2'] = bindec(substr($ac3_header['bsi'], $offset, 8));
$offset += 8;
}
$info_ac3_raw_bsi['audprodie2'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['audprodie2']) {
$info_ac3_raw_bsi['mixlevel2'] = bindec(substr($ac3_header['bsi'], $offset, 5));
$offset += 5;
$info_ac3_raw_bsi['roomtyp2'] = bindec(substr($ac3_header['bsi'], $offset, 2));
$offset += 2;
$info_ac3['mixing_level2'] = 80 + $info_ac3_raw_bsi['mixlevel2'] . 'dB';
$info_ac3['room_type2'] = getid3_ac3::AC3roomTypeLookup($info_ac3_raw_bsi['roomtyp2']);
}
}
$info_ac3_raw_bsi['copyright'] = $ac3_header['bsi'][$offset++] == '1';
$info_ac3_raw_bsi['original'] = $ac3_header['bsi'][$offset++] == '1';
$info_ac3_raw_bsi['timecode1_flag'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['timecode1_flag']) {
$info_ac3_raw_bsi['timecode1'] = bindec(substr($ac3_header['bsi'], $offset, 14));
$offset += 14;
}
$info_ac3_raw_bsi['timecode2_flag'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['timecode2_flag']) {
$info_ac3_raw_bsi['timecode2'] = bindec(substr($ac3_header['bsi'], $offset, 14));
$offset += 14;
}
$info_ac3_raw_bsi['addbsi_flag'] = $ac3_header['bsi'][$offset++] == '1';
if ($info_ac3_raw_bsi['addbsi_flag']) {
$info_ac3_raw_bsi['addbsi_length'] = bindec(substr($ac3_header['bsi'], $offset, 6));
$offset += 6;
$ac3_header['bsi'] .= getid3_lib::BigEndian2Bin($this->fread($info_ac3_raw_bsi['addbsi_length']));
$info_ac3_raw_bsi['addbsi_data'] = substr($ac3_header['bsi'], 119, $info_ac3_raw_bsi['addbsi_length'] * 8);
}
return true;
}
function Analyze()
{
$info =& $this->getid3->info;
// http://www.matroska.org/technical/specs/index.html#EBMLBasics
$offset = $info['avdataoffset'];
$EBMLdata = '';
$EBMLdata_offset = $offset;
if (!getid3_lib::intValueSupported($info['avdataend'])) {
$this->warnings[] = 'This version of getID3() [' . $this->getid3->version() . '] may or may not correctly handle Matroska files larger than ' . round(PHP_INT_MAX / 1073741824) . 'GB';
}
while ($offset < $info['avdataend']) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$top_element_offset = $offset;
$top_element_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$top_element_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
if ($top_element_length === false) {
$this->warnings[] = 'invalid chunk length at ' . $top_element_offset;
$offset = PHP_INT_MAX + 1;
break;
}
$top_element_endoffset = $offset + $top_element_length;
switch ($top_element_id) {
case EBML_ID_EBML:
$info['fileformat'] = 'matroska';
$info['matroska']['header']['offset'] = $top_element_offset;
$info['matroska']['header']['length'] = $top_element_length;
while ($offset < $top_element_endoffset) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$element_data = array();
$element_data_offset = $offset;
$element_data['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$element_data['id_name'] = $this->EBMLidName($element_data['id']);
$element_data['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$end_offset = $offset + $element_data['length'];
switch ($element_data['id']) {
case EBML_ID_VOID:
// padding, ignore
break;
case EBML_ID_EBMLVERSION:
case EBML_ID_EBMLREADVERSION:
case EBML_ID_EBMLMAXIDLENGTH:
case EBML_ID_EBMLMAXSIZELENGTH:
case EBML_ID_DOCTYPEVERSION:
case EBML_ID_DOCTYPEREADVERSION:
$element_data['data'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $element_data['length']));
break;
case EBML_ID_DOCTYPE:
$element_data['data'] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $element_data['length']), "");
break;
case EBML_ID_CRC32:
// probably not useful, ignore
unset($element_data);
break;
default:
$this->warnings[] = 'Unhandled track.video element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $element_data['id'] . '::' . $element_data['id_name'] . ') at ' . $element_data_offset;
break;
}
$offset = $end_offset;
if (!empty($element_data)) {
$info['matroska']['header']['elements'][] = $element_data;
}
}
break;
case EBML_ID_SEGMENT:
$info['matroska']['segment'][0]['offset'] = $top_element_offset;
$info['matroska']['segment'][0]['length'] = $top_element_length;
$segment_key = -1;
while ($offset < $info['avdataend']) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$element_data = array();
$element_data['offset'] = $offset;
$element_data['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$element_data['id_name'] = $this->EBMLidName($element_data['id']);
$element_data['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
if ($element_data['length'] === false) {
$this->warnings[] = 'invalid chunk length at ' . $element_data['offset'];
//$offset = PHP_INT_MAX + 1;
$offset = $info['avdataend'];
break;
}
$element_end = $offset + $element_data['length'];
switch ($element_data['id']) {
//case EBML_ID_CLUSTER:
// // too many cluster entries, probably not useful
// break;
case false:
$this->warnings[] = 'invalid ID at ' . $element_data['offset'];
$offset = $element_end;
continue 3;
default:
$info['matroska']['segments'][] = $element_data;
break;
}
$segment_key++;
switch ($element_data['id']) {
case EBML_ID_SEEKHEAD:
// Contains the position of other level 1 elements
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$seek_entry = array();
$seek_entry['offset'] = $offset;
$seek_entry['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$seek_entry['id_name'] = $this->EBMLidName($seek_entry['id']);
$seek_entry['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$seek_end_offset = $offset + $seek_entry['length'];
switch ($seek_entry['id']) {
case EBML_ID_SEEK:
// Contains a single seek entry to an EBML element
while ($offset < $seek_end_offset) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$value = substr($EBMLdata, $offset - $EBMLdata_offset, $length);
$offset += $length;
switch ($id) {
case EBML_ID_SEEKID:
$dummy = 0;
$seek_entry['target_id'] = $this->readEBMLint($value, $dummy);
$seek_entry['target_name'] = $this->EBMLidName($seek_entry['target_id']);
break;
case EBML_ID_SEEKPOSITION:
$seek_entry['target_offset'] = $element_data['offset'] + getid3_lib::BigEndian2Int($value);
break;
case EBML_ID_CRC32:
// probably not useful, ignore
//$seek_entry['crc32'] = getid3_lib::PrintHexBytes($value, true, false, false);
unset($seek_entry);
break;
default:
$info['error'][] = 'Unhandled segment [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $id . ') at ' . $offset;
break;
}
}
if (!empty($seek_entry)) {
$info['matroska']['seek'][] = $seek_entry;
}
//switch ($seek_entry['target_id']) {
// case EBML_ID_CLUSTER:
// // too many cluster seek points, probably not useful
// break;
// default:
// $info['matroska']['seek'][] = $seek_entry;
// break;
//}
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled seekhead element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $seek_entry['id'] . '::' . $seek_entry['id_name'] . ') at ' . $offset;
break;
}
$offset = $seek_end_offset;
}
break;
case EBML_ID_TRACKS:
// information about all tracks in segment
$info['matroska']['tracks'] = $element_data;
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$track_entry = array();
$track_entry['offset'] = $offset;
$track_entry['id'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$track_entry['id_name'] = $this->EBMLidName($track_entry['id']);
$track_entry['length'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$track_entry_endoffset = $offset + $track_entry['length'];
// $track_entry['offset'] is not the same as $offset, even though they were set equal a few lines up: $offset has been automagically incremented by readEMLint()
switch ($track_entry['id']) {
case EBML_ID_TRACKENTRY:
//subelements: Describes a track with all elements.
while ($offset < $track_entry_endoffset) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_TRACKNUMBER:
case EBML_ID_TRACKUID:
case EBML_ID_TRACKTYPE:
case EBML_ID_MINCACHE:
case EBML_ID_MAXCACHE:
case EBML_ID_MAXBLOCKADDITIONID:
case EBML_ID_DEFAULTDURATION:
// nanoseconds per frame
$track_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_TRACKTIMECODESCALE:
$track_entry[$subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_CODECID:
case EBML_ID_LANGUAGE:
case EBML_ID_NAME:
case EBML_ID_CODECNAME:
case EBML_ID_CODECPRIVATE:
$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "");
break;
// thought maybe it was a nice wFormatTag entry, but it's not :(
//case EBML_ID_CODECPRIVATE:
//$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
//if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, false)) {
// $track_entry[$subelement_idname.'_decoded'] = getid3_riff::RIFFparseWAVEFORMATex($track_entry[$subelement_idname]);
// if (isset($track_entry[$subelement_idname.'_decoded']['raw']['wFormatTag'])) {
// }
//} else {
// $this->warnings[] = 'failed to include "module.audio-video.riff.php" for parsing codec private data';
//}
//break;
// thought maybe it was a nice wFormatTag entry, but it's not :(
//case EBML_ID_CODECPRIVATE:
//$track_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "\x00");
//if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio-video.riff.php', __FILE__, false)) {
// $track_entry[$subelement_idname.'_decoded'] = getid3_riff::RIFFparseWAVEFORMATex($track_entry[$subelement_idname]);
// if (isset($track_entry[$subelement_idname.'_decoded']['raw']['wFormatTag'])) {
// }
//} else {
// $this->warnings[] = 'failed to include "module.audio-video.riff.php" for parsing codec private data';
//}
//break;
case EBML_ID_FLAGENABLED:
case EBML_ID_FLAGDEFAULT:
case EBML_ID_FLAGFORCED:
case EBML_ID_FLAGLACING:
case EBML_ID_CODECDECODEALL:
$track_entry[$subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_VIDEO:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_PIXELWIDTH:
case EBML_ID_PIXELHEIGHT:
case EBML_ID_STEREOMODE:
case EBML_ID_PIXELCROPBOTTOM:
case EBML_ID_PIXELCROPTOP:
case EBML_ID_PIXELCROPLEFT:
case EBML_ID_PIXELCROPRIGHT:
case EBML_ID_DISPLAYWIDTH:
case EBML_ID_DISPLAYHEIGHT:
case EBML_ID_DISPLAYUNIT:
case EBML_ID_ASPECTRATIOTYPE:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_FLAGINTERLACED:
$track_entry[$sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_GAMMAVALUE:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_COLOURSPACE:
$track_entry[$sub_subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), "");
break;
default:
$this->warnings[] = 'Unhandled track.video element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
if (isset($track_entry[$this->EBMLidName(EBML_ID_CODECID)]) && $track_entry[$this->EBMLidName(EBML_ID_CODECID)] == 'V_MS/VFW/FOURCC' && isset($track_entry[$this->EBMLidName(EBML_ID_CODECPRIVATE)])) {
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio-video.riff.php', __FILE__, false)) {
$track_entry['codec_private_parsed'] = getid3_riff::ParseBITMAPINFOHEADER($track_entry[$this->EBMLidName(EBML_ID_CODECPRIVATE)]);
} else {
$this->warnings[] = 'Unable to parse codec private data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio-video.riff.php"';
}
}
break;
case EBML_ID_AUDIO:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CHANNELS:
case EBML_ID_BITDEPTH:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_SAMPLINGFREQUENCY:
case EBML_ID_OUTPUTSAMPLINGFREQUENCY:
$track_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_CHANNELPOSITIONS:
$track_entry[$sub_subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), "");
break;
default:
$this->warnings[] = 'Unhandled track.audio element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
break;
case EBML_ID_CONTENTENCODINGS:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CONTENTENCODING:
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_CONTENTENCODINGORDER:
case EBML_ID_CONTENTENCODINGSCOPE:
case EBML_ID_CONTENTENCODINGTYPE:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
case EBML_ID_CONTENTCOMPRESSION:
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CONTENTCOMPALGO:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
break;
case EBML_ID_CONTENTCOMPSETTINGS:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings.contentencoding.contentcompression element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
break;
case EBML_ID_CONTENTENCRYPTION:
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CONTENTENCALGO:
case EBML_ID_CONTENTSIGALGO:
case EBML_ID_CONTENTSIGHASHALGO:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
break;
case EBML_ID_CONTENTENCKEYID:
case EBML_ID_CONTENTSIGNATURE:
case EBML_ID_CONTENTSIGKEYID:
$track_entry[$sub_subelement_idname][$sub_sub_subelement_idname][$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings.contentencoding.contentcompression element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings.contentencoding element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_sub_subelement_end;
}
break;
default:
$this->warnings[] = 'Unhandled track.contentencodings element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled track element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
break;
case EBML_ID_CRC32:
// probably not useful, ignore
$offset = $track_entry_endoffset;
break;
default:
$this->warnings[] = 'Unhandled track element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $track_entry['id'] . '::' . $track_entry['id_name'] . ') at ' . $track_entry['offset'];
$offset = $track_entry_endoffset;
break;
}
$info['matroska']['tracks']['tracks'][] = $track_entry;
}
break;
case EBML_ID_INFO:
// Contains the position of other level 1 elements
$info_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_CHAPTERTRANSLATEEDITIONUID:
case EBML_ID_CHAPTERTRANSLATECODEC:
case EBML_ID_TIMECODESCALE:
$info_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_DURATION:
$info_entry[$subelement_idname] = getid3_lib::BigEndian2Float(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_DATEUTC:
$info_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
$info_entry[$subelement_idname . '_unix'] = $this->EBMLdate2unix($info_entry[$subelement_idname]);
break;
case EBML_ID_SEGMENTUID:
case EBML_ID_PREVUID:
case EBML_ID_NEXTUID:
case EBML_ID_SEGMENTFAMILY:
case EBML_ID_CHAPTERTRANSLATEID:
$info_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "");
break;
case EBML_ID_SEGMENTFILENAME:
case EBML_ID_PREVFILENAME:
case EBML_ID_NEXTFILENAME:
case EBML_ID_TITLE:
case EBML_ID_MUXINGAPP:
case EBML_ID_WRITINGAPP:
$info_entry[$subelement_idname] = trim(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length), "");
$info['matroska']['comments'][strtolower($subelement_idname)][] = $info_entry[$subelement_idname];
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled info element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
$info['matroska']['info'][] = $info_entry;
break;
case EBML_ID_CUES:
$cues_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_CUEPOINT:
$cuepoint_entry = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CUETRACKPOSITIONS:
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_CUETRACK:
$cuepoint_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled cues.cuepoint.cuetrackpositions element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_subelement_id . '::' . $sub_sub_subelement_idname . ') at ' . $sub_sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
break;
case EBML_ID_CUETIME:
$cuepoint_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled cues.cuepoint element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$cues_entry[] = $cuepoint_entry;
$offset = $sub_subelement_end;
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled cues element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
$info['matroska']['cues'] = $cues_entry;
break;
case EBML_ID_TAGS:
$tags_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
$tag_entry = array();
switch ($subelement_id) {
case EBML_ID_WRITINGAPP:
$tag_entry[$subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length);
break;
case EBML_ID_TAG:
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_TARGETS:
$targets_entry = array();
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_TARGETTYPEVALUE:
$targets_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
$targets_entry[strtolower($sub_sub_subelement_idname) . '_long'] = $this->MatroskaTargetTypeValue($targets_entry[$sub_sub_subelement_idname]);
break;
case EBML_ID_EDITIONUID:
case EBML_ID_CHAPTERUID:
case EBML_ID_ATTACHMENTUID:
case EBML_ID_TAGTRACKUID:
case EBML_ID_TAGCHAPTERUID:
$targets_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled tag.targets element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_subelement_id . '::' . $sub_sub_subelement_idname . ') at ' . $sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_subelement_end;
}
$tag_entry[$sub_subelement_idname][] = $targets_entry;
break;
case EBML_ID_SIMPLETAG:
//$tag_entry[$sub_subelement_idname][] = $simpletag_entry;
$tag_entry[$sub_subelement_idname][] = $this->Handle_EMBL_ID_SIMPLETAG($offset, $sub_subelement_end);
break;
case EBML_ID_TARGETTYPE:
$tag_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
break;
case EBML_ID_TRACKUID:
$tag_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled tags.tag element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$offset = $sub_subelement_end;
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled tags element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$tags_entry['tags'][] = $tag_entry;
$offset = $subelement_end;
}
$info['matroska']['tags'] = $tags_entry['tags'];
break;
case EBML_ID_ATTACHMENTS:
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_ATTACHEDFILE:
$attachedfile_entry = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_FILEDESCRIPTION:
case EBML_ID_FILENAME:
case EBML_ID_FILEMIMETYPE:
$attachedfile_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
break;
case EBML_ID_FILEDATA:
$attachedfile_entry['data_offset'] = $offset;
$attachedfile_entry['data_length'] = $sub_subelement_length;
do {
if ($this->inline_attachments === false) {
// skip entirely
break;
}
if ($this->inline_attachments === true) {
// great
} elseif (is_int($this->inline_attachments)) {
if ($this->inline_attachments < $sub_subelement_length) {
// too big, skip
$this->warnings[] = 'attachment at ' . $sub_subelement_offset . ' is too large to process inline (' . number_format($sub_subelement_length) . ' bytes)';
break;
}
} elseif (is_string($this->inline_attachments)) {
$this->inline_attachments = rtrim(str_replace(array('/', '\\'), DIRECTORY_SEPARATOR, $this->inline_attachments), DIRECTORY_SEPARATOR);
if (!is_dir($this->inline_attachments) || !is_writable($this->inline_attachments)) {
// cannot write, skip
$this->warnings[] = 'attachment at ' . $sub_subelement_offset . ' cannot be saved to "' . $this->inline_attachments . '" (not writable)';
break;
}
}
// if we get this far, must be OK
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset, $sub_subelement_length);
$attachedfile_entry[$sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length);
if (is_string($this->inline_attachments)) {
$destination_filename = $this->inline_attachments . DIRECTORY_SEPARATOR . md5($info['filenamepath']) . '_' . $attachedfile_entry['data_offset'];
if (!file_exists($destination_filename) || is_writable($destination_filename)) {
file_put_contents($destination_filename, $attachedfile_entry[$sub_subelement_idname]);
} else {
$this->warnings[] = 'attachment at ' . $sub_subelement_offset . ' cannot be saved to "' . $destination_filename . '" (not writable)';
}
$attachedfile_entry[$sub_subelement_idname . '_filename'] = $destination_filename;
unset($attachedfile_entry[$sub_subelement_idname]);
}
} while (false);
break;
case EBML_ID_FILEUID:
$attachedfile_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled attachment.attachedfile element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
if (!empty($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)]) && !empty($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)]) && preg_match('#^image/#i', $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)])) {
if ($this->inline_attachments === true || is_int($this->inline_attachments) && $this->inline_attachments >= strlen($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)])) {
$attachedfile_entry['data'] = $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)];
$attachedfile_entry['image_mime'] = $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)];
$info['matroska']['comments']['picture'][] = array('data' => $attachedfile_entry['data'], 'image_mime' => $attachedfile_entry['image_mime'], 'filename' => !empty($attachedfile_entry[$this->EBMLidName(EBML_ID_FILENAME)]) ? $attachedfile_entry[$this->EBMLidName(EBML_ID_FILENAME)] : '');
unset($attachedfile_entry[$this->EBMLidName(EBML_ID_FILEDATA)], $attachedfile_entry[$this->EBMLidName(EBML_ID_FILEMIMETYPE)]);
}
}
if (!empty($attachedfile_entry['image_mime']) && preg_match('#^image/#i', $attachedfile_entry['image_mime'])) {
// don't add a second copy of attached images, which are grouped under the standard location [comments][picture]
} else {
$info['matroska']['attachments'][] = $attachedfile_entry;
}
$offset = $sub_subelement_end;
break;
case EBML_ID_CRC32:
// probably not useful, ignore
break;
default:
$this->warnings[] = 'Unhandled tags element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
break;
case EBML_ID_CHAPTERS:
// not important to us, contains mostly actual audio/video data, ignore
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_EDITIONENTRY:
$editionentry_entry = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_EDITIONUID:
$editionentry_entry[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_EDITIONFLAGHIDDEN:
case EBML_ID_EDITIONFLAGDEFAULT:
case EBML_ID_EDITIONFLAGORDERED:
$editionentry_entry[$sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_CHAPTERATOM:
$chapteratom_entry = array();
while ($offset < $sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_offset = $offset;
$sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_subelement_end = $offset + $sub_sub_subelement_length;
switch ($sub_sub_subelement_id) {
case EBML_ID_CHAPTERSEGMENTUID:
case EBML_ID_CHAPTERSEGMENTEDITIONUID:
$chapteratom_entry[$sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length);
break;
case EBML_ID_CHAPTERFLAGENABLED:
case EBML_ID_CHAPTERFLAGHIDDEN:
$chapteratom_entry[$sub_sub_subelement_idname] = (bool) getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
case EBML_ID_CHAPTERUID:
case EBML_ID_CHAPTERTIMESTART:
case EBML_ID_CHAPTERTIMEEND:
$chapteratom_entry[$sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_subelement_length));
break;
case EBML_ID_CHAPTERTRACK:
$chaptertrack_entry = array();
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CHAPTERTRACKNUMBER:
$chaptertrack_entry[$sub_sub_sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom.chaptertrack element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_sub_subelement_id . '::' . $sub_sub_sub_subelement_idname . ') at ' . $sub_sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
$chapteratom_entry[$sub_sub_subelement_idname][] = $chaptertrack_entry;
break;
case EBML_ID_CHAPTERDISPLAY:
$chapterdisplay_entry = array();
while ($offset < $sub_sub_subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_offset = $offset;
$sub_sub_sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_idname = $this->EBMLidName($sub_sub_sub_subelement_id);
$sub_sub_sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_sub_sub_subelement_end = $offset + $sub_sub_sub_subelement_length;
switch ($sub_sub_sub_subelement_id) {
case EBML_ID_CHAPSTRING:
case EBML_ID_CHAPLANGUAGE:
case EBML_ID_CHAPCOUNTRY:
$chapterdisplay_entry[$sub_sub_sub_subelement_idname] = substr($EBMLdata, $offset - $EBMLdata_offset, $sub_sub_sub_subelement_length);
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom.chapterdisplay element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_sub_subelement_id . '::' . $sub_sub_sub_subelement_idname . ') at ' . $sub_sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_sub_subelement_end;
}
$chapteratom_entry[$sub_sub_subelement_idname][] = $chapterdisplay_entry;
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry.chapteratom element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_sub_subelement_id . '::' . $sub_sub_subelement_idname . ') at ' . $sub_sub_subelement_offset;
break;
}
$offset = $sub_sub_subelement_end;
}
$editionentry_entry[$sub_subelement_idname][] = $chapteratom_entry;
break;
default:
$this->warnings[] = 'Unhandled chapters.editionentry element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$info['matroska']['chapters'][] = $editionentry_entry;
$offset = $sub_subelement_end;
break;
default:
$this->warnings[] = 'Unhandled chapters element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
break;
case EBML_ID_VOID:
// padding, ignore
$void_entry = array();
$void_entry['offset'] = $offset;
$info['matroska']['void'][] = $void_entry;
break;
case EBML_ID_CLUSTER:
// not important to us, contains mostly actual audio/video data, ignore
$cluster_entry = array();
while ($offset < $element_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$subelement_offset = $offset;
$subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_idname = $this->EBMLidName($subelement_id);
$subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$subelement_end = $offset + $subelement_length;
switch ($subelement_id) {
case EBML_ID_CLUSTERTIMECODE:
case EBML_ID_CLUSTERPOSITION:
case EBML_ID_CLUSTERPREVSIZE:
$cluster_entry[$subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $subelement_length));
break;
case EBML_ID_CLUSTERSILENTTRACKS:
$cluster_silent_tracks = array();
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CLUSTERSILENTTRACKNUMBER:
$cluster_silent_tracks[] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
default:
$this->warnings[] = 'Unhandled clusters.silenttracks element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$cluster_entry[$subelement_idname][] = $cluster_silent_tracks;
$offset = $sub_subelement_end;
break;
case EBML_ID_CLUSTERBLOCKGROUP:
$cluster_block_group = array('offset' => $offset);
while ($offset < $subelement_end) {
$this->EnsureBufferHasEnoughData($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_offset = $offset;
$sub_subelement_id = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_idname = $this->EBMLidName($sub_subelement_id);
$sub_subelement_length = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$sub_subelement_end = $offset + $sub_subelement_length;
switch ($sub_subelement_id) {
case EBML_ID_CLUSTERBLOCK:
$cluster_block_data = array();
$cluster_block_data['tracknumber'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$cluster_block_data['timecode'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 2));
$offset += 2;
// unsure whether this is 1 octect or 2 octets? (http://matroska.org/technical/specs/index.html#block_structure)
$cluster_block_data['flags_raw'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
//$cluster_block_data['flags']['reserved1'] = (($cluster_block_data['flags_raw'] & 0xF0) >> 4);
$cluster_block_data['flags']['invisible'] = (bool) (($cluster_block_data['flags_raw'] & 0x8) >> 3);
$cluster_block_data['flags']['lacing'] = ($cluster_block_data['flags_raw'] & 0x6) >> 1;
//$cluster_block_data['flags']['reserved2'] = (($cluster_block_data['flags_raw'] & 0x01) >> 0);
$cluster_block_data['flags']['lacing_type'] = $this->MatroskaBlockLacingType($cluster_block_data['flags']['lacing']);
if ($cluster_block_data['flags']['lacing'] != 0) {
$cluster_block_data['lace_frames'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
// Number of frames in the lace-1 (uint8)
$offset += 1;
if ($cluster_block_data['flags']['lacing'] != 2) {
$cluster_block_data['lace_frames'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
// Lace-coded size of each frame of the lace, except for the last one (multiple uint8). *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
$offset += 1;
}
}
if (!isset($info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']])) {
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['offset'] = $offset;
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['length'] = $subelement_length;
}
$cluster_block_group[$sub_subelement_idname] = $cluster_block_data;
break;
case EBML_ID_CLUSTERREFERENCEPRIORITY:
// unsigned-int
// unsigned-int
case EBML_ID_CLUSTERBLOCKDURATION:
// unsigned-int
$cluster_block_group[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length));
break;
case EBML_ID_CLUSTERREFERENCEBLOCK:
// signed-int
$cluster_block_group[$sub_subelement_idname] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset - $EBMLdata_offset, $sub_subelement_length), false, true);
break;
default:
$this->warnings[] = 'Unhandled clusters.blockgroup element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $sub_subelement_id . '::' . $sub_subelement_idname . ') at ' . $sub_subelement_offset;
break;
}
$offset = $sub_subelement_end;
}
$cluster_entry[$subelement_idname][] = $cluster_block_group;
$offset = $sub_subelement_end;
break;
case EBML_ID_CLUSTERSIMPLEBLOCK:
// http://www.matroska.org/technical/specs/index.html#simpleblock_structure
$cluster_block_data = array();
$cluster_block_data['tracknumber'] = $this->readEBMLint($EBMLdata, $offset, $EBMLdata_offset);
$cluster_block_data['timecode'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 2));
$offset += 2;
$cluster_block_data['flags_raw'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
$cluster_block_data['flags']['keyframe'] = ($cluster_block_data['flags_raw'] & 0x80) >> 7;
$cluster_block_data['flags']['reserved1'] = ($cluster_block_data['flags_raw'] & 0x70) >> 4;
$cluster_block_data['flags']['invisible'] = ($cluster_block_data['flags_raw'] & 0x8) >> 3;
$cluster_block_data['flags']['lacing'] = ($cluster_block_data['flags_raw'] & 0x6) >> 1;
// 00=no lacing; 01=Xiph lacing; 11=EBML lacing; 10=fixed-size lacing
$cluster_block_data['flags']['discardable'] = $cluster_block_data['flags_raw'] & 0x1;
if ($cluster_block_data['flags']['lacing'] > 0) {
$cluster_block_data['lace_frames'] = 1 + getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
if ($cluster_block_data['flags']['lacing'] != 0x2) {
// *This is not used with Fixed-size lacing as it is calculated automatically from (total size of lace) / (number of frames in lace).
$cluster_block_data['lace_frame_size'] = getid3_lib::BigEndian2Int(substr($EBMLdata, $offset, 1));
$offset += 1;
}
}
if (!isset($info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']])) {
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['offset'] = $offset;
$info['matroska']['track_data_offsets'][$cluster_block_data['tracknumber']]['length'] = $subelement_length;
}
$cluster_block_group[$sub_subelement_idname] = $cluster_block_data;
break;
default:
$this->warnings[] = 'Unhandled cluster element [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $subelement_id . '::' . $subelement_idname . ' [' . $subelement_length . ' bytes]) at ' . $subelement_offset;
break;
}
$offset = $subelement_end;
}
$info['matroska']['cluster'][] = $cluster_entry;
// check to see if all the data we need exists already, if so, break out of the loop
if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
break 2;
}
}
break;
default:
if ($element_data['id_name'] == dechex($element_data['id'])) {
$info['error'][] = 'Unhandled segment [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $element_data['id'] . ') at ' . $element_data_offset;
} else {
$this->warnings[] = 'Unhandled segment [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $element_data['id'] . '::' . $element_data['id_name'] . ') at ' . $element_data['offset'];
}
break;
}
$offset = $element_end;
}
break;
default:
$info['error'][] = 'Unhandled chunk [' . basename(__FILE__) . ':' . __LINE__ . '] (' . $top_element_id . ') at ' . $offset;
break;
}
$offset = $top_element_endoffset;
}
if (isset($info['matroska']['info']) && is_array($info['matroska']['info'])) {
foreach ($info['matroska']['info'] as $key => $infoarray) {
if (isset($infoarray['Duration'])) {
// TimecodeScale is how many nanoseconds each Duration unit is
$info['playtime_seconds'] = $infoarray['Duration'] * ((isset($infoarray['TimecodeScale']) ? $infoarray['TimecodeScale'] : 1000000) / 1000000000);
break;
}
}
}
if (isset($info['matroska']['tags']) && is_array($info['matroska']['tags'])) {
foreach ($info['matroska']['tags'] as $key => $infoarray) {
$this->ExtractCommentsSimpleTag($infoarray);
}
}
if (isset($info['matroska']['tracks']['tracks']) && is_array($info['matroska']['tracks']['tracks'])) {
foreach ($info['matroska']['tracks']['tracks'] as $key => $trackarray) {
$track_info = array();
if (isset($trackarray['FlagDefault'])) {
$track_info['default'] = $trackarray['FlagDefault'];
}
switch (isset($trackarray['TrackType']) ? $trackarray['TrackType'] : '') {
case 1:
// Video
if (!empty($trackarray['PixelWidth'])) {
$track_info['resolution_x'] = $trackarray['PixelWidth'];
}
if (!empty($trackarray['PixelHeight'])) {
$track_info['resolution_y'] = $trackarray['PixelHeight'];
}
if (!empty($trackarray['DisplayWidth'])) {
$track_info['display_x'] = $trackarray['DisplayWidth'];
}
if (!empty($trackarray['DisplayHeight'])) {
$track_info['display_y'] = $trackarray['DisplayHeight'];
}
if (!empty($trackarray['DefaultDuration'])) {
$track_info['frame_rate'] = round(1000000000 / $trackarray['DefaultDuration'], 3);
}
if (!empty($trackarray['CodecID'])) {
$track_info['dataformat'] = $this->MatroskaCodecIDtoCommonName($trackarray['CodecID']);
}
if (!empty($trackarray['codec_private_parsed']['fourcc'])) {
$track_info['fourcc'] = $trackarray['codec_private_parsed']['fourcc'];
}
$info['video']['streams'][] = $track_info;
if (isset($track_info['resolution_x']) && empty($info['video']['resolution_x'])) {
foreach ($track_info as $key => $value) {
$info['video'][$key] = $value;
}
}
break;
case 2:
// Audio
if (!empty($trackarray['CodecID'])) {
$track_info['dataformat'] = $this->MatroskaCodecIDtoCommonName($trackarray['CodecID']);
}
if (!empty($trackarray['SamplingFrequency'])) {
$track_info['sample_rate'] = $trackarray['SamplingFrequency'];
}
if (!empty($trackarray['Channels'])) {
$track_info['channels'] = $trackarray['Channels'];
}
if (!empty($trackarray['BitDepth'])) {
$track_info['bits_per_sample'] = $trackarray['BitDepth'];
}
if (!empty($trackarray['Language'])) {
$track_info['language'] = $trackarray['Language'];
}
switch (isset($trackarray[$this->EBMLidName(EBML_ID_CODECID)]) ? $trackarray[$this->EBMLidName(EBML_ID_CODECID)] : '') {
case 'A_PCM/INT/LIT':
case 'A_PCM/INT/BIG':
$track_info['bitrate'] = $trackarray['SamplingFrequency'] * $trackarray['Channels'] * $trackarray['BitDepth'];
break;
case 'A_AC3':
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
if (isset($info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'])) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
unset($getid3_temp->info['ac3']['GETID3_VERSION']);
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['ac3'];
if (!empty($getid3_temp->info['error'])) {
foreach ($getid3_temp->info['error'] as $newerror) {
$this->warnings[] = 'getid3_ac3() says: [' . $newerror . ']';
}
}
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warnings[] = 'getid3_ac3() says: [' . $newerror . ']';
}
}
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
unset($getid3_temp, $getid3_ac3);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because $info[matroska][track_data_offsets][' . $trackarray['TrackNumber'] . '][offset] not set';
}
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.ac3.php"';
}
break;
case 'A_DTS':
$dts_offset = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
// this is a NASTY hack, but sometimes audio data is off by a byte or two and not sure why, email info@getid3.org if you can explain better
fseek($this->getid3->fp, $dts_offset, SEEK_SET);
$magic_test = fread($this->getid3->fp, 8);
for ($i = 0; $i < 4; $i++) {
// look to see if DTS "magic" is here, if so adjust offset by that many bytes
if (substr($magic_test, $i, 4) == "þ€") {
$dts_offset += $i;
break;
}
}
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.dts.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $dts_offset;
$getid3_dts = new getid3_dts($getid3_temp);
$getid3_dts->Analyze();
unset($getid3_temp->info['dts']['GETID3_VERSION']);
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['dts'];
if (!empty($getid3_temp->info['error'])) {
foreach ($getid3_temp->info['error'] as $newerror) {
$this->warnings[] = 'getid3_dts() says: [' . $newerror . ']';
}
}
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warnings[] = 'getid3_dts() says: [' . $newerror . ']';
}
}
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
unset($getid3_temp, $getid3_dts);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.dts.php"';
}
break;
case 'A_AAC':
$this->warnings[] = 'This version of getID3() [v' . $this->getid3->version() . '] has problems parsing AAC audio in Matroska containers [' . basename(__FILE__) . ':' . __LINE__ . ']';
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.aac.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
$getid3_aac = new getid3_aac($getid3_temp);
$getid3_aac->Analyze();
unset($getid3_temp->info['aac']['GETID3_VERSION']);
if (!empty($getid3_temp->info['audio']['dataformat'])) {
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['aac'];
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
} else {
$this->warnings[] = 'Failed to parse ' . $trackarray[$this->EBMLidName(EBML_ID_CODECID)] . ' audio data [' . basename(__FILE__) . ':' . __LINE__ . ']';
}
unset($getid3_temp, $getid3_aac);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.aac.php"';
}
break;
case 'A_MPEG/L3':
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.mp3.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
$getid3_temp->info['avdataend'] = $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'] + $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['length'];
$getid3_mp3 = new getid3_mp3($getid3_temp);
$getid3_mp3->allow_bruteforce = true;
$getid3_mp3->Analyze();
if (!empty($getid3_temp->info['mpeg'])) {
unset($getid3_temp->info['mpeg']['GETID3_VERSION']);
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']] = $getid3_temp->info['mpeg'];
if (!empty($getid3_temp->info['error'])) {
foreach ($getid3_temp->info['error'] as $newerror) {
$this->warnings[] = 'getid3_mp3() says: [' . $newerror . ']';
}
}
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $newerror) {
$this->warnings[] = 'getid3_mp3() says: [' . $newerror . ']';
}
}
if (isset($getid3_temp->info['audio']) && is_array($getid3_temp->info['audio'])) {
foreach ($getid3_temp->info['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because getid3_mp3::Analyze failed at offset ' . $info['matroska']['track_data_offsets'][$trackarray['TrackNumber']]['offset'];
}
unset($getid3_temp, $getid3_mp3);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.mp3.php"';
}
break;
case 'A_VORBIS':
if (isset($trackarray['CodecPrivate'])) {
// this is a NASTY hack, email info@getid3.org if you have a better idea how to get this info out
$found_vorbis = false;
for ($vorbis_offset = 1; $vorbis_offset < 16; $vorbis_offset++) {
if (substr($trackarray['CodecPrivate'], $vorbis_offset, 6) == 'vorbis') {
$vorbis_offset--;
$found_vorbis = true;
break;
}
}
if ($found_vorbis) {
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ogg.php', __FILE__, false)) {
$oggpageinfo['page_seqno'] = 0;
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_ogg = new getid3_ogg($getid3_temp);
$getid3_ogg->ParseVorbisPageHeader($trackarray['CodecPrivate'], $vorbis_offset, $oggpageinfo);
$vorbis_fileinfo = $getid3_temp->info;
unset($getid3_temp, $getid3_ogg);
if (isset($vorbis_fileinfo['audio'])) {
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']]['audio'] = $vorbis_fileinfo['audio'];
}
if (isset($vorbis_fileinfo['ogg'])) {
$info['matroska']['track_codec_parsed'][$trackarray['TrackNumber']]['ogg'] = $vorbis_fileinfo['ogg'];
}
if (!empty($vorbis_fileinfo['error'])) {
foreach ($vorbis_fileinfo['error'] as $newerror) {
$this->warnings[] = 'getid3_ogg() says: [' . $newerror . ']';
}
}
if (!empty($vorbis_fileinfo['warning'])) {
foreach ($vorbis_fileinfo['warning'] as $newerror) {
$this->warnings[] = 'getid3_ogg() says: [' . $newerror . ']';
}
}
if (isset($vorbis_fileinfo['audio']) && is_array($vorbis_fileinfo['audio'])) {
foreach ($vorbis_fileinfo['audio'] as $key => $value) {
$track_info[$key] = $value;
}
}
if (!empty($vorbis_fileinfo['ogg']['bitrate_average'])) {
$track_info['bitrate'] = $vorbis_fileinfo['ogg']['bitrate_average'];
} elseif (!empty($vorbis_fileinfo['ogg']['bitrate_nominal'])) {
$track_info['bitrate'] = $vorbis_fileinfo['ogg']['bitrate_nominal'];
}
unset($vorbis_fileinfo);
unset($oggpageinfo);
} else {
$this->warnings[] = 'Unable to parse audio data [' . basename(__FILE__) . ':' . __LINE__ . '] because cannot include "module.audio.ogg.php"';
}
} else {
}
} else {
}
break;
default:
$this->warnings[] = 'Unhandled audio type "' . (isset($trackarray[$this->EBMLidName(EBML_ID_CODECID)]) ? $trackarray[$this->EBMLidName(EBML_ID_CODECID)] : '') . '"';
break;
}
$info['audio']['streams'][] = $track_info;
if (isset($track_info['dataformat']) && empty($info['audio']['dataformat'])) {
foreach ($track_info as $key => $value) {
$info['audio'][$key] = $value;
}
}
break;
default:
// ignore, do nothing
break;
}
}
}
if ($this->hide_clusters) {
// too much data returned that is usually not useful
if (isset($info['matroska']['segments']) && is_array($info['matroska']['segments'])) {
foreach ($info['matroska']['segments'] as $key => $segmentsarray) {
if ($segmentsarray['id'] == EBML_ID_CLUSTER) {
unset($info['matroska']['segments'][$key]);
}
}
}
if (isset($info['matroska']['seek']) && is_array($info['matroska']['seek'])) {
foreach ($info['matroska']['seek'] as $key => $seekarray) {
if ($seekarray['target_id'] == EBML_ID_CLUSTER) {
unset($info['matroska']['seek'][$key]);
}
}
}
//unset($info['matroska']['cluster']);
//unset($info['matroska']['track_data_offsets']);
}
if (!empty($info['video']['streams'])) {
$info['mime_type'] = 'video/x-matroska';
} elseif (!empty($info['audio']['streams'])) {
$info['mime_type'] = 'audio/x-matroska';
} elseif (isset($info['mime_type'])) {
unset($info['mime_type']);
}
foreach ($this->warnings as $key => $value) {
$info['warning'][] = $value;
}
return true;
}
public function ParseRIFF($start_offset, $max_offset)
{
$getid3 = $this->getid3;
$info =& $getid3->info;
$endian_function = $this->endian_function;
$max_offset = min($max_offset, $info['avdataend']);
$riff_chunk = false;
$this->fseek($start_offset, SEEK_SET);
while ($this->ftell() < $max_offset) {
$chunk_name = $this->fread(4);
if (strlen($chunk_name) < 4) {
throw new getid3_exception('Expecting chunk name at offset ' . ($this->ftell() - 4) . ' but found nothing. Aborting RIFF parsing.');
}
$chunk_size = getid3_lib::$endian_function($this->fread(4));
if ($chunk_size == 0) {
continue;
throw new getid3_exception('Chunk size at offset ' . ($this->ftell() - 4) . ' is zero. Aborting RIFF parsing.');
}
if ($chunk_size % 2 != 0) {
// all structures are packed on word boundaries
$chunk_size++;
}
switch ($chunk_name) {
case 'LIST':
$list_name = $this->fread(4);
switch ($list_name) {
case 'movi':
case 'rec ':
$riff_chunk[$list_name]['offset'] = $this->ftell() - 4;
$riff_chunk[$list_name]['size'] = $chunk_size;
static $parsed_audio_stream = false;
if (!$parsed_audio_stream) {
$where_we_were = $this->ftell();
$audio_chunk_header = $this->fread(12);
$audio_chunk_stream_num = substr($audio_chunk_header, 0, 2);
$audio_chunk_stream_type = substr($audio_chunk_header, 2, 2);
$audio_chunk_size = getid3_lib::LittleEndian2Int(substr($audio_chunk_header, 4, 4));
if ($audio_chunk_stream_type == 'wb') {
$first_four_bytes = substr($audio_chunk_header, 8, 4);
//// MPEG
if (preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', $first_four_bytes)) {
if (!$getid3->include_module_optional('audio.mp3')) {
$getid3->warning('MP3 skipped because mp3 module is missing.');
} elseif (getid3_mp3::MPEGaudioHeaderBytesValid($first_four_bytes)) {
// Clone getid3 - messing with offsets - better safe than sorry
$clone = clone $getid3;
$clone->info['avdataoffset'] = $this->ftell() - 4;
$clone->info['avdataend'] = $this->ftell() + $audio_chunk_size;
$mp3 = new getid3_mp3($clone);
$mp3->AnalyzeMPEGaudioInfo();
// Import from clone and destroy
if (isset($clone->info['mpeg']['audio'])) {
$info['mpeg']['audio'] = $clone->info['mpeg']['audio'];
$info['audio']['dataformat'] = 'mp' . $info['mpeg']['audio']['layer'];
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
$info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
$info['bitrate'] = $info['audio']['bitrate'];
$getid3->warning($clone->warnings());
unset($clone);
}
}
} elseif (preg_match('/^\\x0B\\x77/s', $first_four_bytes)) {
if (!$getid3->include_module_optional('audio.ac3')) {
$getid3->warning('AC3 skipped because ac3 module is missing.');
} else {
// Clone getid3 - messing with offsets - better safe than sorry
$clone = clone $getid3;
$clone->info['avdataoffset'] = $this->ftell() - 4;
$clone->info['avdataend'] = $this->ftell() + $audio_chunk_size;
// Analyze clone by fp
$ac3 = new getid3_ac3($clone);
$ac3->Analyze();
// Import from clone and destroy
$info['audio'] = $clone->info['audio'];
$info['ac3'] = $clone->info['ac3'];
$getid3->warning($clone->warnings());
unset($clone);
}
}
}
$parsed_audio_stream = true;
$this->fseek($where_we_were, SEEK_SET);
}
$this->fseek($chunk_size - 4, SEEK_CUR);
break;
default:
if (!isset($riff_chunk[$list_name])) {
$riff_chunk[$list_name] = array();
}
$list_chunk_parent = $list_name;
$list_chunk_max_offset = $this->ftell() - 4 + $chunk_size;
if ($parsed_chunk = $this->ParseRIFF($this->ftell(), $this->ftell() + $chunk_size - 4)) {
$riff_chunk[$list_name] = array_merge_recursive($riff_chunk[$list_name], $parsed_chunk);
}
break;
}
break;
default:
$this_index = 0;
if (isset($riff_chunk[$chunk_name]) && is_array($riff_chunk[$chunk_name])) {
$this_index = count($riff_chunk[$chunk_name]);
}
$riff_chunk[$chunk_name][$this_index]['offset'] = $this->ftell() - 8;
$riff_chunk[$chunk_name][$this_index]['size'] = $chunk_size;
switch ($chunk_name) {
case 'data':
$info['avdataoffset'] = $this->ftell();
$info['avdataend'] = $info['avdataoffset'] + $chunk_size;
$riff_data_chunk_contents_test = $this->fread(36);
//// This is probably MP3 data
if (strlen($riff_data_chunk_contents_test) > 0 && preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', substr($riff_data_chunk_contents_test, 0, 4))) {
try {
if (!$getid3->include_module_optional('audio.mp3')) {
$getid3->warning('MP3 skipped because mp3 module is missing.');
}
// Clone getid3 - messing with offsets - better safe than sorry
$clone = clone $getid3;
if (getid3_mp3::MPEGaudioHeaderBytesValid(substr($riff_data_chunk_contents_test, 0, 4))) {
$mp3 = new getid3_mp3($clone);
$mp3->AnalyzeMPEGaudioInfo();
// Import from clone and destroy
if (isset($clone->info['mpeg']['audio'])) {
$info['mpeg']['audio'] = $clone->info['mpeg']['audio'];
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
$info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
$info['bitrate'] = $info['audio']['bitrate'];
$getid3->warning($clone->warnings());
unset($clone);
}
}
} catch (Exception $e) {
// do nothing - not MP3 data
}
} elseif (strlen($riff_data_chunk_contents_test) > 0 && substr($riff_data_chunk_contents_test, 0, 2) == "\vw") {
if (!$getid3->include_module_optional('audio.ac3')) {
$getid3->warning('AC3 skipped because ac3 module is missing.');
} else {
// Clone getid3 - messing with offsets - better safe than sorry
$clone = clone $getid3;
$clone->info['avdataoffset'] = $riff_chunk[$chunk_name][$this_index]['offset'];
$clone->info['avdataend'] = $clone->info['avdataoffset'] + $riff_chunk[$chunk_name][$this_index]['size'];
// Analyze clone by fp
$ac3 = new getid3_ac3($clone);
$ac3->Analyze();
// Import from clone and destroy
$info['audio'] = $clone->info['audio'];
$info['ac3'] = $clone->info['ac3'];
$getid3->warning($clone->warnings());
unset($clone);
}
} elseif (strlen($riff_data_chunk_contents_test) > 0 && substr($riff_data_chunk_contents_test, 8, 2) == "w\v") {
if (!$getid3->include_module_optional('audio.ac3')) {
$getid3->warning('AC3 skipped because ac3 module is missing.');
} else {
// Extract ac3 data to string
$ac3_data = '';
for ($i = 0; $i < 28; $i += 2) {
// swap byte order
$ac3_data .= substr($riff_data_chunk_contents_test, 8 + $i + 1, 1);
$ac3_data .= substr($riff_data_chunk_contents_test, 8 + $i + 0, 1);
}
// Clone getid3 - messing with offsets - better safe than sorry
$clone = clone $getid3;
$clone->info['avdataoffset'] = 0;
$clone->info['avdataend'] = 20;
// Analyse clone by string
$ac3 = new getid3_ac3($clone);
$ac3->AnalyzeString($ac3_data);
// Import from clone and destroy
$info['audio'] = $clone->info['audio'];
$info['ac3'] = $clone->info['ac3'];
$getid3->warning($clone->warnings());
unset($clone);
}
}
if (strlen($riff_data_chunk_contents_test) > 0 && substr($riff_data_chunk_contents_test, 0, 4) == 'wvpk') {
// This is WavPack data
$info['wavpack']['offset'] = $riff_chunk[$chunk_name][$this_index]['offset'];
$info['wavpack']['size'] = getid3_lib::LittleEndian2Int(substr($riff_data_chunk_contents_test, 4, 4));
$this->RIFFparseWavPackHeader(substr($riff_data_chunk_contents_test, 8, 28));
} else {
// This is some other kind of data (quite possibly just PCM)
// do nothing special, just skip it
}
$this->fseek($riff_chunk[$chunk_name][$this_index]['offset'] + 8 + $chunk_size, SEEK_SET);
break;
case 'bext':
case 'cart':
case 'fmt ':
case 'MEXT':
case 'DISP':
// always read data in
$riff_chunk[$chunk_name][$this_index]['data'] = $this->fread($chunk_size);
break;
default:
if (!empty($list_chunk_parent) && $riff_chunk[$chunk_name][$this_index]['offset'] + $riff_chunk[$chunk_name][$this_index]['size'] <= $list_chunk_max_offset) {
$riff_chunk[$list_chunk_parent][$chunk_name][$this_index]['offset'] = $riff_chunk[$chunk_name][$this_index]['offset'];
$riff_chunk[$list_chunk_parent][$chunk_name][$this_index]['size'] = $riff_chunk[$chunk_name][$this_index]['size'];
unset($riff_chunk[$chunk_name][$this_index]['offset']);
unset($riff_chunk[$chunk_name][$this_index]['size']);
if (isset($riff_chunk[$chunk_name][$this_index]) && empty($riff_chunk[$chunk_name][$this_index])) {
unset($riff_chunk[$chunk_name][$this_index]);
}
if (isset($riff_chunk[$chunk_name]) && empty($riff_chunk[$chunk_name])) {
unset($riff_chunk[$chunk_name]);
}
$riff_chunk[$list_chunk_parent][$chunk_name][$this_index]['data'] = $this->fread($chunk_size);
} elseif ($chunk_size < 2048) {
// only read data in if smaller than 2kB
$riff_chunk[$chunk_name][$this_index]['data'] = $this->fread($chunk_size);
} else {
$this->fseek($chunk_size, SEEK_CUR);
}
break;
}
break;
}
}
return $riff_chunk;
}
function ParseRIFF($startoffset, $maxoffset)
{
$info =& $this->getid3->info;
$maxoffset = min($maxoffset, $info['avdataend']);
$RIFFchunk = false;
$FoundAllChunksWeNeed = false;
if ($startoffset < 0 || !getid3_lib::intValueSupported($startoffset)) {
$info['warning'][] = 'Unable to ParseRIFF() at ' . $startoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
return false;
}
$max_usable_offset = min(PHP_INT_MAX - 1024, $maxoffset);
if ($maxoffset > $max_usable_offset) {
$info['warning'][] = 'ParseRIFF() may return incomplete data for chunk starting at ' . $startoffset . ' because beyond it extends to ' . $maxoffset . ', which is beyond the ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
}
fseek($this->getid3->fp, $startoffset, SEEK_SET);
while (ftell($this->getid3->fp) < $max_usable_offset) {
$chunknamesize = fread($this->getid3->fp, 8);
$chunkname = substr($chunknamesize, 0, 4);
$chunksize = $this->EitherEndian2Int(substr($chunknamesize, 4, 4));
if (strlen($chunkname) < 4) {
$info['error'][] = 'Expecting chunk name at offset ' . (ftell($this->getid3->fp) - 4) . ' but found nothing. Aborting RIFF parsing.';
break;
}
if ($chunksize == 0) {
if ($chunkname == 'JUNK') {
// we'll allow zero-size JUNK frames
} else {
$info['warning'][] = 'Chunk size at offset ' . (ftell($this->getid3->fp) - 4) . ' is zero. Aborting RIFF parsing.';
break;
}
}
if ($chunksize % 2 != 0) {
// all structures are packed on word boundaries
$chunksize++;
}
switch ($chunkname) {
case 'LIST':
$listname = fread($this->getid3->fp, 4);
if (preg_match('#^(movi|rec )$#i', $listname)) {
$RIFFchunk[$listname]['offset'] = ftell($this->getid3->fp) - 4;
$RIFFchunk[$listname]['size'] = $chunksize;
if ($FoundAllChunksWeNeed) {
// skip over
} else {
$WhereWeWere = ftell($this->getid3->fp);
$AudioChunkHeader = fread($this->getid3->fp, 12);
$AudioChunkStreamNum = substr($AudioChunkHeader, 0, 2);
$AudioChunkStreamType = substr($AudioChunkHeader, 2, 2);
$AudioChunkSize = getid3_lib::LittleEndian2Int(substr($AudioChunkHeader, 4, 4));
if ($AudioChunkStreamType == 'wb') {
$FirstFourBytes = substr($AudioChunkHeader, 8, 4);
if (preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', $FirstFourBytes)) {
// MP3
if (getid3_mp3::MPEGaudioHeaderBytesValid($FirstFourBytes)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = ftell($this->getid3->fp) - 4;
$getid3_temp->info['avdataend'] = ftell($this->getid3->fp) + $AudioChunkSize;
$getid3_mp3 = new getid3_mp3($getid3_temp);
$getid3_mp3->getOnlyMPEGaudioInfo($getid3_temp->info['avdataoffset'], false);
if (isset($getid3_temp->info['mpeg']['audio'])) {
$info['mpeg']['audio'] = $getid3_temp->info['mpeg']['audio'];
$info['audio'] = $getid3_temp->info['audio'];
$info['audio']['dataformat'] = 'mp' . $info['mpeg']['audio']['layer'];
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
$info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
//$info['bitrate'] = $info['audio']['bitrate'];
}
unset($getid3_temp, $getid3_mp3);
}
} elseif (preg_match('/^\\x0B\\x77/s', $FirstFourBytes)) {
// AC3
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = ftell($this->getid3->fp) - 4;
$getid3_temp->info['avdataend'] = ftell($this->getid3->fp) + $AudioChunkSize;
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $key => $value) {
$info['warning'][] = $value;
}
}
}
unset($getid3_temp, $getid3_ac3);
}
}
}
$FoundAllChunksWeNeed = true;
fseek($this->getid3->fp, $WhereWeWere, SEEK_SET);
}
fseek($this->getid3->fp, $chunksize - 4, SEEK_CUR);
//} elseif (preg_match('#^[0-9]{2}(wb|pc|dc|db)$#i', $listname)) {
//
// // data chunk, ignore
//
} else {
if (!isset($RIFFchunk[$listname])) {
$RIFFchunk[$listname] = array();
}
$LISTchunkParent = $listname;
$LISTchunkMaxOffset = ftell($this->getid3->fp) - 4 + $chunksize;
if ($parsedChunk = $this->ParseRIFF(ftell($this->getid3->fp), ftell($this->getid3->fp) + $chunksize - 4)) {
$RIFFchunk[$listname] = array_merge_recursive($RIFFchunk[$listname], $parsedChunk);
}
}
break;
default:
if (preg_match('#^[0-9]{2}(wb|pc|dc|db)$#', $chunkname)) {
$nextoffset = ftell($this->getid3->fp) + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$info['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 2;
}
fseek($this->getid3->fp, $nextoffset, SEEK_SET);
break;
}
$thisindex = 0;
if (isset($RIFFchunk[$chunkname]) && is_array($RIFFchunk[$chunkname])) {
$thisindex = count($RIFFchunk[$chunkname]);
}
$RIFFchunk[$chunkname][$thisindex]['offset'] = ftell($this->getid3->fp) - 8;
$RIFFchunk[$chunkname][$thisindex]['size'] = $chunksize;
switch ($chunkname) {
case 'data':
$info['avdataoffset'] = ftell($this->getid3->fp);
$info['avdataend'] = $info['avdataoffset'] + $chunksize;
$RIFFdataChunkContentsTest = fread($this->getid3->fp, 36);
if (strlen($RIFFdataChunkContentsTest) > 0 && preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', substr($RIFFdataChunkContentsTest, 0, 4))) {
// Probably is MP3 data
if (getid3_mp3::MPEGaudioHeaderBytesValid(substr($RIFFdataChunkContentsTest, 0, 4))) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$getid3_temp->info['avdataend'] = $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'];
$getid3_mp3 = new getid3_mp3($getid3_temp);
$getid3_mp3->getOnlyMPEGaudioInfo($RIFFchunk[$chunkname][$thisindex]['offset'], false);
if (empty($getid3_temp->info['error'])) {
$info['mpeg'] = $getid3_temp->info['mpeg'];
$info['audio'] = $getid3_temp->info['audio'];
}
unset($getid3_temp, $getid3_mp3);
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 2) == "\vw") {
// This is probably AC-3 data
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$getid3_temp->info['avdataend'] = $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'];
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
$info['warning'] = $getid3_temp->info['warning'];
}
unset($getid3_temp, $getid3_ac3);
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 8, 2) == "w\v") {
// Dolby Digital WAV
// AC-3 content, but not encoded in same format as normal AC-3 file
// For one thing, byte order is swapped
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
// ok to use tmpfile here - only 56 bytes
if ($RIFFtempfilename = tempnam(GETID3_TEMP_DIR, 'id3')) {
if ($fd_temp = fopen($RIFFtempfilename, 'wb')) {
for ($i = 0; $i < 28; $i += 2) {
// swap byte order
fwrite($fd_temp, substr($RIFFdataChunkContentsTest, 8 + $i + 1, 1));
fwrite($fd_temp, substr($RIFFdataChunkContentsTest, 8 + $i + 0, 1));
}
fclose($fd_temp);
$getid3_temp = new getID3();
$getid3_temp->openfile($RIFFtempfilename);
$getid3_temp->info['avdataend'] = 20;
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
$info['warning'] = $getid3_temp->info['warning'];
} else {
$info['error'][] = 'Error parsing Dolby Digital WAV (AC3-in-RIFF): ' . implode(';', $getid3_temp->info['error']);
}
unset($getid3_ac3, $getid3_temp);
} else {
$info['error'][] = 'Error parsing Dolby Digital WAV (AC3-in-RIFF): failed to write temp file';
}
unlink($RIFFtempfilename);
} else {
$info['error'][] = 'Error parsing Dolby Digital WAV (AC3-in-RIFF): failed to write temp file';
}
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 4) == 'wvpk') {
// This is WavPack data
$info['wavpack']['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$info['wavpack']['size'] = getid3_lib::LittleEndian2Int(substr($RIFFdataChunkContentsTest, 4, 4));
$this->RIFFparseWavPackHeader(substr($RIFFdataChunkContentsTest, 8, 28));
} else {
// This is some other kind of data (quite possibly just PCM)
// do nothing special, just skip it
}
$nextoffset = $RIFFchunk[$chunkname][$thisindex]['offset'] + 8 + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$info['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 3;
}
fseek($this->getid3->fp, $RIFFchunk[$chunkname][$thisindex]['offset'] + 8 + $chunksize, SEEK_SET);
break;
case 'iXML':
case 'bext':
case 'cart':
case 'fmt ':
case 'strh':
case 'strf':
case 'indx':
case 'MEXT':
case 'DISP':
// always read data in
// always read data in
case 'JUNK':
// should be: never read data in
// but some programs write their version strings in a JUNK chunk (e.g. VirtualDub, AVIdemux, etc)
if ($chunksize < 1048576) {
if ($chunksize > 0) {
$RIFFchunk[$chunkname][$thisindex]['data'] = fread($this->getid3->fp, $chunksize);
if ($chunkname == 'JUNK') {
if (preg_match('#^([\\x20-\\x7F]+)#', $RIFFchunk[$chunkname][$thisindex]['data'], $matches)) {
// only keep text characters [chr(32)-chr(127)]
$info['riff']['comments']['junk'][] = trim($matches[1]);
}
// but if nothing there, ignore
// remove the key in either case
unset($RIFFchunk[$chunkname][$thisindex]['data']);
}
}
} else {
$info['warning'][] = 'chunk "' . $chunkname . '" at offset ' . ftell($this->getid3->fp) . ' is unexpectedly larger than 1MB (claims to be ' . number_format($chunksize) . ' bytes), skipping data';
$nextoffset = ftell($this->getid3->fp) + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$info['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 3;
}
fseek($this->getid3->fp, $nextoffset, SEEK_SET);
}
break;
default:
if (!preg_match('#^[0-9]{2}(wb|pc|dc|db)$#', $chunkname) && !empty($LISTchunkParent) && $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'] <= $LISTchunkMaxOffset) {
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['size'] = $RIFFchunk[$chunkname][$thisindex]['size'];
unset($RIFFchunk[$chunkname][$thisindex]['offset']);
unset($RIFFchunk[$chunkname][$thisindex]['size']);
if (isset($RIFFchunk[$chunkname][$thisindex]) && empty($RIFFchunk[$chunkname][$thisindex])) {
unset($RIFFchunk[$chunkname][$thisindex]);
}
if (isset($RIFFchunk[$chunkname]) && empty($RIFFchunk[$chunkname])) {
unset($RIFFchunk[$chunkname]);
}
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['data'] = fread($this->getid3->fp, $chunksize);
//} elseif (in_array($chunkname, array('ID3 ')) || (($chunksize > 0) && ($chunksize < 2048))) {
} elseif ($chunksize > 0 && $chunksize < 2048) {
// only read data in if smaller than 2kB
$RIFFchunk[$chunkname][$thisindex]['data'] = fread($this->getid3->fp, $chunksize);
} else {
$nextoffset = ftell($this->getid3->fp) + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$info['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 3;
}
fseek($this->getid3->fp, $nextoffset, SEEK_SET);
}
break;
}
break;
}
}
return $RIFFchunk;
}
public function ParseRIFF($startoffset, $maxoffset)
{
$info =& $this->getid3->info;
$RIFFchunk = false;
$FoundAllChunksWeNeed = false;
try {
$this->fseek($startoffset);
$maxoffset = min($maxoffset, $info['avdataend']);
while ($this->ftell() < $maxoffset) {
$chunknamesize = $this->fread(8);
$chunkname = substr($chunknamesize, 0, 4);
$chunksize = $this->EitherEndian2Int(substr($chunknamesize, 4, 4));
if (strlen(trim($chunkname, "")) < 4) {
$this->error('Expecting chunk name at offset ' . ($this->ftell() - 8) . ' but found nothing. Aborting RIFF parsing.');
break;
}
if ($chunksize == 0 && $chunkname != 'JUNK') {
$this->warning('Chunk (' . $chunkname . ') size at offset ' . ($this->ftell() - 4) . ' is zero. Aborting RIFF parsing.');
break;
}
if ($chunksize % 2 != 0) {
// all structures are packed on word boundaries
$chunksize++;
}
switch ($chunkname) {
case 'LIST':
$listname = $this->fread(4);
if (preg_match('#^(movi|rec )$#i', $listname)) {
$RIFFchunk[$listname]['offset'] = $this->ftell() - 4;
$RIFFchunk[$listname]['size'] = $chunksize;
if (!$FoundAllChunksWeNeed) {
$WhereWeWere = $this->ftell();
$AudioChunkHeader = $this->fread(12);
$AudioChunkStreamNum = substr($AudioChunkHeader, 0, 2);
$AudioChunkStreamType = substr($AudioChunkHeader, 2, 2);
$AudioChunkSize = getid3_lib::LittleEndian2Int(substr($AudioChunkHeader, 4, 4));
if ($AudioChunkStreamType == 'wb') {
$FirstFourBytes = substr($AudioChunkHeader, 8, 4);
if (preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', $FirstFourBytes)) {
// MP3
if (getid3_mp3::MPEGaudioHeaderBytesValid($FirstFourBytes)) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $this->ftell() - 4;
$getid3_temp->info['avdataend'] = $this->ftell() + $AudioChunkSize;
$getid3_mp3 = new getid3_mp3($getid3_temp);
$getid3_mp3->getOnlyMPEGaudioInfo($getid3_temp->info['avdataoffset'], false);
if (isset($getid3_temp->info['mpeg']['audio'])) {
$info['mpeg']['audio'] = $getid3_temp->info['mpeg']['audio'];
$info['audio'] = $getid3_temp->info['audio'];
$info['audio']['dataformat'] = 'mp' . $info['mpeg']['audio']['layer'];
$info['audio']['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
$info['audio']['channels'] = $info['mpeg']['audio']['channels'];
$info['audio']['bitrate'] = $info['mpeg']['audio']['bitrate'];
$info['audio']['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
//$info['bitrate'] = $info['audio']['bitrate'];
}
unset($getid3_temp, $getid3_mp3);
}
} elseif (strpos($FirstFourBytes, getid3_ac3::syncword) === 0) {
// AC3
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $this->ftell() - 4;
$getid3_temp->info['avdataend'] = $this->ftell() + $AudioChunkSize;
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
if (!empty($getid3_temp->info['warning'])) {
foreach ($getid3_temp->info['warning'] as $key => $value) {
$info['warning'][] = $value;
}
}
}
unset($getid3_temp, $getid3_ac3);
}
}
$FoundAllChunksWeNeed = true;
$this->fseek($WhereWeWere);
}
$this->fseek($chunksize - 4, SEEK_CUR);
} else {
if (!isset($RIFFchunk[$listname])) {
$RIFFchunk[$listname] = array();
}
$LISTchunkParent = $listname;
$LISTchunkMaxOffset = $this->ftell() - 4 + $chunksize;
if ($parsedChunk = $this->ParseRIFF($this->ftell(), $LISTchunkMaxOffset)) {
$RIFFchunk[$listname] = array_merge_recursive($RIFFchunk[$listname], $parsedChunk);
}
}
break;
default:
if (preg_match('#^[0-9]{2}(wb|pc|dc|db)$#', $chunkname)) {
$this->fseek($chunksize, SEEK_CUR);
break;
}
$thisindex = 0;
if (isset($RIFFchunk[$chunkname]) && is_array($RIFFchunk[$chunkname])) {
$thisindex = count($RIFFchunk[$chunkname]);
}
$RIFFchunk[$chunkname][$thisindex]['offset'] = $this->ftell() - 8;
$RIFFchunk[$chunkname][$thisindex]['size'] = $chunksize;
switch ($chunkname) {
case 'data':
$info['avdataoffset'] = $this->ftell();
$info['avdataend'] = $info['avdataoffset'] + $chunksize;
$RIFFdataChunkContentsTest = $this->fread(36);
if (strlen($RIFFdataChunkContentsTest) > 0 && preg_match('/^\\xFF[\\xE2-\\xE7\\xF2-\\xF7\\xFA-\\xFF][\\x00-\\xEB]/s', substr($RIFFdataChunkContentsTest, 0, 4))) {
// Probably is MP3 data
if (getid3_mp3::MPEGaudioHeaderBytesValid(substr($RIFFdataChunkContentsTest, 0, 4))) {
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$getid3_temp->info['avdataend'] = $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'];
$getid3_mp3 = new getid3_mp3($getid3_temp);
$getid3_mp3->getOnlyMPEGaudioInfo($RIFFchunk[$chunkname][$thisindex]['offset'], false);
if (empty($getid3_temp->info['error'])) {
$info['mpeg'] = $getid3_temp->info['mpeg'];
$info['audio'] = $getid3_temp->info['audio'];
}
unset($getid3_temp, $getid3_mp3);
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 2) == getid3_ac3::syncword) {
// This is probably AC-3 data
$getid3_temp = new getID3();
$getid3_temp->openfile($this->getid3->filename);
$getid3_temp->info['avdataoffset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$getid3_temp->info['avdataend'] = $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'];
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
$info['warning'] = $getid3_temp->info['warning'];
}
unset($getid3_temp, $getid3_ac3);
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 8, 2) == getid3_ac3::syncword) {
// Dolby Digital WAV
// AC-3 content, but not encoded in same format as normal AC-3 file
// For one thing, byte order is swapped
if ($RIFFtempfilename = tempnam(GETID3_TEMP_DIR, 'id3')) {
// ok to use tmpfile here - only 56 bytes
if ($fd_temp = fopen($RIFFtempfilename, 'wb')) {
for ($i = 0; $i < 28; $i += 2) {
// swap byte order
fwrite($fd_temp, substr($RIFFdataChunkContentsTest, 8 + $i + 1, 1));
fwrite($fd_temp, substr($RIFFdataChunkContentsTest, 8 + $i + 0, 1));
}
fclose($fd_temp);
$getid3_temp = new getID3();
$getid3_temp->openfile($RIFFtempfilename);
$getid3_temp->info['avdataend'] = 20;
$getid3_ac3 = new getid3_ac3($getid3_temp);
$getid3_ac3->Analyze();
if (empty($getid3_temp->info['error'])) {
$info['audio'] = $getid3_temp->info['audio'];
$info['ac3'] = $getid3_temp->info['ac3'];
$info['warning'] = $getid3_temp->info['warning'];
} else {
$info['error'][] = 'Error parsing Dolby Digital WAV (AC3-in-RIFF): ' . implode(';', $getid3_temp->info['error']);
}
unset($getid3_ac3, $getid3_temp);
} else {
$info['error'][] = 'Error parsing Dolby Digital WAV (AC3-in-RIFF): failed to write temp file';
}
unlink($RIFFtempfilename);
} else {
$info['error'][] = 'Error parsing Dolby Digital WAV (AC3-in-RIFF): failed to write temp file';
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 4) == 'wvpk') {
// This is WavPack data
$info['wavpack']['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$info['wavpack']['size'] = getid3_lib::LittleEndian2Int(substr($RIFFdataChunkContentsTest, 4, 4));
self::parseWavPackHeader(substr($RIFFdataChunkContentsTest, 8, 28));
} else {
// This is some other kind of data (quite possibly just PCM)
// do nothing special, just skip it
}
$nextoffset = $RIFFchunk[$chunkname][$thisindex]['offset'] + 8 + $chunksize;
$this->fseek($nextoffset);
break;
case 'iXML':
case 'bext':
case 'cart':
case 'fmt ':
case 'strh':
case 'strf':
case 'indx':
case 'MEXT':
case 'DISP':
// always read data in
// always read data in
case 'JUNK':
// should be: never read data in
// but some programs write their version strings in a JUNK chunk (e.g. VirtualDub, AVIdemux, etc)
if ($chunksize < 1048576) {
if ($chunksize > 0) {
$RIFFchunk[$chunkname][$thisindex]['data'] = $this->fread($chunksize);
if ($chunkname == 'JUNK') {
if (preg_match('#^([\\x20-\\x7F]+)#', $RIFFchunk[$chunkname][$thisindex]['data'], $matches)) {
// only keep text characters [chr(32)-chr(127)]
$info['riff']['comments']['junk'][] = trim($matches[1]);
}
// but if nothing there, ignore
// remove the key in either case
unset($RIFFchunk[$chunkname][$thisindex]['data']);
}
}
} else {
$this->warning('Chunk "' . $chunkname . '" at offset ' . $this->ftell() . ' is unexpectedly larger than 1MB (claims to be ' . number_format($chunksize) . ' bytes), skipping data');
$this->fseek($chunksize, SEEK_CUR);
}
break;
//case 'IDVX':
// $info['divxtag']['comments'] = self::ParseDIVXTAG($this->fread($chunksize));
// break;
//case 'IDVX':
// $info['divxtag']['comments'] = self::ParseDIVXTAG($this->fread($chunksize));
// break;
default:
if (!empty($LISTchunkParent) && $RIFFchunk[$chunkname][$thisindex]['offset'] + $RIFFchunk[$chunkname][$thisindex]['size'] <= $LISTchunkMaxOffset) {
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['size'] = $RIFFchunk[$chunkname][$thisindex]['size'];
unset($RIFFchunk[$chunkname][$thisindex]['offset']);
unset($RIFFchunk[$chunkname][$thisindex]['size']);
if (isset($RIFFchunk[$chunkname][$thisindex]) && empty($RIFFchunk[$chunkname][$thisindex])) {
unset($RIFFchunk[$chunkname][$thisindex]);
}
if (isset($RIFFchunk[$chunkname]) && empty($RIFFchunk[$chunkname])) {
unset($RIFFchunk[$chunkname]);
}
$RIFFchunk[$LISTchunkParent][$chunkname][$thisindex]['data'] = $this->fread($chunksize);
} elseif ($chunksize < 2048) {
// only read data in if smaller than 2kB
$RIFFchunk[$chunkname][$thisindex]['data'] = $this->fread($chunksize);
} else {
$this->fseek($chunksize, SEEK_CUR);
}
break;
}
break;
}
}
} catch (getid3_exception $e) {
if ($e->getCode() == 10) {
$this->warning('RIFF parser: ' . $e->getMessage());
} else {
throw $e;
}
}
return $RIFFchunk;
}
