function ParseRIFF(&$fd, $startoffset, $maxoffset, &$ThisFileInfo)
{
$maxoffset = min($maxoffset, $ThisFileInfo['avdataend']);
$RIFFchunk = false;
fseek($fd, $startoffset, SEEK_SET);
while (ftell($fd) < $maxoffset) {
$chunkname = fread($fd, 4);
if (strlen($chunkname) < 4) {
$ThisFileInfo['error'][] = 'Expecting chunk name at offset ' . (ftell($fd) - 4) . ' but found nothing. Aborting RIFF parsing.';
break;
}
$chunksize = getid3_riff::EitherEndian2Int($ThisFileInfo, fread($fd, 4));
if ($chunksize == 0) {
$ThisFileInfo['error'][] = 'Chunk size at offset ' . (ftell($fd) - 4) . ' is zero. Aborting RIFF parsing.';
break;
}
if ($chunksize % 2 != 0) {
// all structures are packed on word boundaries
$chunksize++;
}
switch ($chunkname) {
case 'LIST':
$listname = fread($fd, 4);
switch ($listname) {
case 'movi':
case 'rec ':
$RIFFchunk[$listname]['offset'] = ftell($fd) - 4;
$RIFFchunk[$listname]['size'] = $chunksize;
static $ParsedAudioStream = false;
if ($ParsedAudioStream) {
// skip over
} else {
$WhereWeWere = ftell($fd);
$AudioChunkHeader = fread($fd, 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)) {
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = ftell($fd) - 4;
$dummy['avdataend'] = ftell($fd) + $AudioChunkSize;
getid3_mp3::getOnlyMPEGaudioInfo($fd, $dummy, $dummy['avdataoffset'], false);
if (isset($dummy['mpeg']['audio'])) {
$ThisFileInfo = $dummy;
$ThisFileInfo['audio']['dataformat'] = 'mp' . $ThisFileInfo['mpeg']['audio']['layer'];
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels'];
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'];
$ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate'];
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitrate_mode']);
}
}
} elseif (preg_match('/^\\x0B\\x77/s', $FirstFourBytes)) {
// AC3
$GETID3_ERRORARRAY =& $ThisFileInfo['warning'];
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = ftell($fd) - 4;
$dummy['avdataend'] = ftell($fd) + $AudioChunkSize;
$dummy['error'] = array();
$ac3_tag = new getid3_ac3($fd, $dummy);
if (empty($dummy['error'])) {
$ThisFileInfo['audio'] = $dummy['audio'];
$ThisFileInfo['ac3'] = $dummy['ac3'];
$ThisFileInfo['warning'] = $dummy['warning'];
}
}
}
}
$ParsedAudioStream = true;
fseek($fd, $WhereWeWere, SEEK_SET);
}
fseek($fd, $chunksize - 4, SEEK_CUR);
break;
default:
if (!isset($RIFFchunk[$listname])) {
$RIFFchunk[$listname] = array();
}
$LISTchunkParent = $listname;
$LISTchunkMaxOffset = ftell($fd) - 4 + $chunksize;
if ($parsedChunk = getid3_riff::ParseRIFF($fd, ftell($fd), ftell($fd) + $chunksize - 4, $ThisFileInfo)) {
$RIFFchunk[$listname] = array_merge_recursive($RIFFchunk[$listname], $parsedChunk);
}
break;
}
break;
default:
$thisindex = 0;
if (isset($RIFFchunk[$chunkname]) && is_array($RIFFchunk[$chunkname])) {
$thisindex = count($RIFFchunk[$chunkname]);
}
$RIFFchunk[$chunkname][$thisindex]['offset'] = ftell($fd) - 8;
$RIFFchunk[$chunkname][$thisindex]['size'] = $chunksize;
switch ($chunkname) {
case 'data':
$ThisFileInfo['avdataoffset'] = ftell($fd);
$ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $chunksize;
$RIFFdataChunkContentsTest = fread($fd, 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($RIFFdataChunkContentsTest, 0, 4))) {
getid3_mp3::getOnlyMPEGaudioInfo($fd, $ThisFileInfo, $RIFFchunk[$chunkname][$thisindex]['offset'], false);
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 2) == "\vw") {
// This is probably AC-3 data
$GETID3_ERRORARRAY =& $ThisFileInfo['warning'];
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$dummy['avdataend'] = $dummy['avdataoffset'] + $RIFFchunk[$chunkname][$thisindex]['size'];
$dummy['error'] = array();
$ac3_tag = new getid3_ac3($fd, $dummy);
if (empty($dummy['error'])) {
$ThisFileInfo['audio'] = $dummy['audio'];
$ThisFileInfo['ac3'] = $dummy['ac3'];
$ThisFileInfo['warning'] = $dummy['warning'];
}
}
} elseif (strlen($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
$GETID3_ERRORARRAY =& $ThisFileInfo['warning'];
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
// ok to use tmpfile here - only 56 bytes
if ($fd_temp = tmpfile()) {
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));
}
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = 0;
$dummy['avdataend'] = 20;
$dummy['error'] = array();
$ac3_tag = new getid3_ac3($fd_temp, $dummy);
fclose($fd_temp);
if (empty($dummy['error'])) {
$ThisFileInfo['audio'] = $dummy['audio'];
$ThisFileInfo['ac3'] = $dummy['ac3'];
$ThisFileInfo['warning'] = $dummy['warning'];
} else {
$ThisFileInfo['error'][] = 'Errors parsing DolbyDigital WAV: ' . explode(';', $dummy['error']);
}
} else {
$ThisFileInfo['error'][] = 'Could not create temporary file to analyze DolbyDigital WAV';
}
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 4) == 'wvpk') {
// This is WavPack data
$ThisFileInfo['wavpack']['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$ThisFileInfo['wavpack']['size'] = getid3_lib::LittleEndian2Int(substr($RIFFdataChunkContentsTest, 4, 4));
getid3_riff::RIFFparseWavPackHeader(substr($RIFFdataChunkContentsTest, 8, 28), $ThisFileInfo);
} else {
// This is some other kind of data (quite possibly just PCM)
// do nothing special, just skip it
}
fseek($fd, $RIFFchunk[$chunkname][$thisindex]['offset'] + 8 + $chunksize, SEEK_SET);
break;
case 'bext':
case 'cart':
case 'fmt ':
case 'MEXT':
case 'DISP':
// always read data in
$RIFFchunk[$chunkname][$thisindex]['data'] = fread($fd, $chunksize);
break;
default:
if (!empty($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'] = fread($fd, $chunksize);
} elseif ($chunksize < 2048) {
// only read data in if smaller than 2kB
$RIFFchunk[$chunkname][$thisindex]['data'] = fread($fd, $chunksize);
} else {
fseek($fd, $chunksize, SEEK_CUR);
}
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);
$chunkname = str_replace("", '_', substr($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 $RIFFchunk;
}
public function ParseRIFF($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 $RIFFchunk;
}
static function ParseRIFF(&$fd, $startoffset, $maxoffset, &$ThisFileInfo)
{
$maxoffset = min($maxoffset, $ThisFileInfo['avdataend']);
$RIFFchunk = false;
$FoundAllChunksWeNeed = false;
if ($startoffset < 0 || !getid3_lib::intValueSupported($startoffset)) {
$ThisFileInfo['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) {
$ThisFileInfo['warning'][] = 'ParseRIFF() may return incomplete data for chunk starting at ' . $startoffset . ' because beyond it extends to ' . $maxoffset . ', which is beyond the ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
}
fseek($fd, $startoffset, SEEK_SET);
while (ftell($fd) < $max_usable_offset) {
$chunknamesize = fread($fd, 8);
$chunkname = substr($chunknamesize, 0, 4);
$chunksize = getid3_riff::EitherEndian2Int($ThisFileInfo, substr($chunknamesize, 4, 4));
if (strlen($chunkname) < 4) {
$ThisFileInfo['error'][] = 'Expecting chunk name at offset ' . (ftell($fd) - 4) . ' but found nothing. Aborting RIFF parsing.';
break;
}
if ($chunksize == 0) {
if ($chunkname == 'JUNK') {
// we'll allow zero-size JUNK frames
} else {
$ThisFileInfo['warning'][] = 'Chunk size at offset ' . (ftell($fd) - 4) . ' is zero. Aborting RIFF parsing.';
break;
}
}
if ($chunksize % 2 != 0) {
// all structures are packed on word boundaries
$chunksize++;
}
switch ($chunkname) {
case 'LIST':
$listname = fread($fd, 4);
if (preg_match('#^(movi|rec )$#i', $listname)) {
$RIFFchunk[$listname]['offset'] = ftell($fd) - 4;
$RIFFchunk[$listname]['size'] = $chunksize;
if ($FoundAllChunksWeNeed) {
// skip over
} else {
$WhereWeWere = ftell($fd);
$AudioChunkHeader = fread($fd, 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)) {
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = ftell($fd) - 4;
$dummy['avdataend'] = ftell($fd) + $AudioChunkSize;
getid3_mp3::getOnlyMPEGaudioInfo($fd, $dummy, $dummy['avdataoffset'], false);
if (isset($dummy['mpeg']['audio'])) {
$ThisFileInfo = $dummy;
$ThisFileInfo['audio']['dataformat'] = 'mp' . $ThisFileInfo['mpeg']['audio']['layer'];
$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['mpeg']['audio']['sample_rate'];
$ThisFileInfo['audio']['channels'] = $ThisFileInfo['mpeg']['audio']['channels'];
$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['mpeg']['audio']['bitrate'];
$ThisFileInfo['bitrate'] = $ThisFileInfo['audio']['bitrate'];
$ThisFileInfo['audio']['bitrate_mode'] = strtolower($ThisFileInfo['mpeg']['audio']['bitrate_mode']);
}
unset($dummy);
}
} elseif (preg_match('/^\\x0B\\x77/s', $FirstFourBytes)) {
// AC3
$GETID3_ERRORARRAY =& $ThisFileInfo['warning'];
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = ftell($fd) - 4;
$dummy['avdataend'] = ftell($fd) + $AudioChunkSize;
$dummy['error'] = array();
$ac3_tag = new getid3_ac3($fd, $dummy);
if (empty($dummy['error'])) {
$ThisFileInfo['audio'] = $dummy['audio'];
$ThisFileInfo['ac3'] = $dummy['ac3'];
$ThisFileInfo['warning'] = $dummy['warning'];
}
unset($ac3_tag);
}
}
}
$FoundAllChunksWeNeed = true;
fseek($fd, $WhereWeWere, SEEK_SET);
}
fseek($fd, $chunksize - 4, SEEK_CUR);
//} elseif (preg_match('#^[0-9]{2}(wb|pc|dc|db)$#i', $listname)) {
//
// // data chunk, ignore
//
} else {
if (!isset($RIFFchunk[$listname])) {
$RIFFchunk[$listname] = array();
}
$LISTchunkParent = $listname;
$LISTchunkMaxOffset = ftell($fd) - 4 + $chunksize;
if ($parsedChunk = getid3_riff::ParseRIFF($fd, ftell($fd), ftell($fd) + $chunksize - 4, $ThisFileInfo)) {
$RIFFchunk[$listname] = array_merge_recursive($RIFFchunk[$listname], $parsedChunk);
}
}
break;
default:
if (preg_match('#^[0-9]{2}(wb|pc|dc|db)$#', $chunkname)) {
$nextoffset = ftell($fd) + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$ThisFileInfo['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 2;
}
fseek($fd, $nextoffset, SEEK_SET);
break;
}
$thisindex = 0;
if (isset($RIFFchunk[$chunkname]) && is_array($RIFFchunk[$chunkname])) {
$thisindex = count($RIFFchunk[$chunkname]);
}
$RIFFchunk[$chunkname][$thisindex]['offset'] = ftell($fd) - 8;
$RIFFchunk[$chunkname][$thisindex]['size'] = $chunksize;
switch ($chunkname) {
case 'data':
$ThisFileInfo['avdataoffset'] = ftell($fd);
$ThisFileInfo['avdataend'] = $ThisFileInfo['avdataoffset'] + $chunksize;
$RIFFdataChunkContentsTest = fread($fd, 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))) {
$dummy = $ThisFileInfo;
// copy info array, only use if there's no error
$getid3_mp3 = new getid3_mp3($fd, $dummy);
$dummy = $ThisFileInfo;
// copy info array, only use if there's no error
$getid3_mp3->getOnlyMPEGaudioInfo($fd, $dummy, $RIFFchunk[$chunkname][$thisindex]['offset'], false);
// use dummy array unless error
if (empty($dummy['error'])) {
$ThisFileInfo = $dummy;
}
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 2) == "\vw") {
// This is probably AC-3 data
$GETID3_ERRORARRAY =& $ThisFileInfo['warning'];
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$dummy['avdataend'] = $dummy['avdataoffset'] + $RIFFchunk[$chunkname][$thisindex]['size'];
$dummy['error'] = array();
$ac3_tag = new getid3_ac3($fd, $dummy);
if (empty($dummy['error'])) {
$ThisFileInfo['audio'] = $dummy['audio'];
$ThisFileInfo['ac3'] = $dummy['ac3'];
$ThisFileInfo['warning'] = $dummy['warning'];
}
unset($ac3_tag);
}
} 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
$GETID3_ERRORARRAY =& $ThisFileInfo['warning'];
if (getid3_lib::IncludeDependency(GETID3_INCLUDEPATH . 'module.audio.ac3.php', __FILE__, false)) {
// ok to use tmpfile here - only 56 bytes
if ($fd_temp = tmpfile()) {
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));
}
$dummy = $ThisFileInfo;
$dummy['avdataoffset'] = 0;
$dummy['avdataend'] = 20;
$dummy['error'] = array();
$ac3_tag = new getid3_ac3($fd_temp, $dummy);
fclose($fd_temp);
if (empty($dummy['error'])) {
$ThisFileInfo['audio'] = $dummy['audio'];
$ThisFileInfo['ac3'] = $dummy['ac3'];
$ThisFileInfo['warning'] = $dummy['warning'];
} else {
$ThisFileInfo['error'][] = 'Errors parsing DolbyDigital WAV: ' . explode(';', $dummy['error']);
}
unset($ac3_tag);
} else {
$ThisFileInfo['error'][] = 'Could not create temporary file to analyze DolbyDigital WAV';
}
}
} elseif (strlen($RIFFdataChunkContentsTest) > 0 && substr($RIFFdataChunkContentsTest, 0, 4) == 'wvpk') {
// This is WavPack data
$ThisFileInfo['wavpack']['offset'] = $RIFFchunk[$chunkname][$thisindex]['offset'];
$ThisFileInfo['wavpack']['size'] = getid3_lib::LittleEndian2Int(substr($RIFFdataChunkContentsTest, 4, 4));
getid3_riff::RIFFparseWavPackHeader(substr($RIFFdataChunkContentsTest, 8, 28), $ThisFileInfo);
} 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)) {
$ThisFileInfo['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 3;
}
fseek($fd, $RIFFchunk[$chunkname][$thisindex]['offset'] + 8 + $chunksize, SEEK_SET);
break;
case 'bext':
case 'cart':
case 'fmt ':
case 'strh':
case 'strf':
case 'indx':
case 'MEXT':
case 'DISP':
// always read data in
$RIFFchunk[$chunkname][$thisindex]['data'] = fread($fd, $chunksize);
break;
case 'JUNK':
// never read data in
$nextoffset = ftell($fd) + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$ThisFileInfo['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 3;
}
fseek($fd, $nextoffset, SEEK_SET);
break;
default:
if (!preg_match('#^[0-9]{2}(wb|pc|dc|db)$#', $chunkname) && !empty($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($fd, $chunksize);
} elseif ($chunksize > 0 && $chunksize < 2048) {
// only read data in if smaller than 2kB
$RIFFchunk[$chunkname][$thisindex]['data'] = fread($fd, $chunksize);
} else {
$nextoffset = ftell($fd) + $chunksize;
if ($nextoffset < 0 || !getid3_lib::intValueSupported($nextoffset)) {
$ThisFileInfo['warning'][] = 'Unable to parse chunk at offset ' . $nextoffset . ' because beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB limit of PHP filesystem functions';
break 3;
}
fseek($fd, $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;
}
