示例#1
0
 /**
  * @return bool
  */
 public function analyze()
 {
     $info =& $this->getid3->info;
     // initialize these values to an empty array, otherwise they default to NULL
     // and you can't append array values to a NULL value
     $info['riff'] = array('raw' => array());
     // Shortcuts
     $thisfile_riff =& $info['riff'];
     $thisfile_riff_raw =& $thisfile_riff['raw'];
     $thisfile_audio =& $info['audio'];
     $thisfile_video =& $info['video'];
     $thisfile_audio_dataformat =& $thisfile_audio['dataformat'];
     $thisfile_riff_audio =& $thisfile_riff['audio'];
     $thisfile_riff_video =& $thisfile_riff['video'];
     $Original['avdataoffset'] = $info['avdataoffset'];
     $Original['avdataend'] = $info['avdataend'];
     fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
     $RIFFheader = fread($this->getid3->fp, 12);
     $RIFFsubtype = substr($RIFFheader, 8, 4);
     switch (substr($RIFFheader, 0, 4)) {
         case 'FORM':
             $info['fileformat'] = 'aiff';
             $thisfile_riff['header_size'] = $this->EitherEndian2Int(substr($RIFFheader, 4, 4));
             $thisfile_riff[$RIFFsubtype] = $this->ParseRIFF($info['avdataoffset'] + 12, $info['avdataoffset'] + $thisfile_riff['header_size']);
             break;
         case 'RIFF':
             // AVI, WAV, etc
         // AVI, WAV, etc
         case 'SDSS':
             // SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
         // SDSS is identical to RIFF, just renamed. Used by SmartSound QuickTracks (www.smartsound.com)
         case 'RMP3':
             // RMP3 is identical to RIFF, just renamed. Used by [unknown program] when creating RIFF-MP3s
             $info['fileformat'] = 'riff';
             $thisfile_riff['header_size'] = $this->EitherEndian2Int(substr($RIFFheader, 4, 4));
             if ($RIFFsubtype == 'RMP3') {
                 // RMP3 is identical to WAVE, just renamed. Used by [unknown program] when creating RIFF-MP3s
                 $RIFFsubtype = 'WAVE';
             }
             $thisfile_riff[$RIFFsubtype] = $this->ParseRIFF($info['avdataoffset'] + 12, $info['avdataoffset'] + $thisfile_riff['header_size']);
             if ($info['avdataend'] - $info['filesize'] == 1) {
                 // LiteWave appears to incorrectly *not* pad actual output file
                 // to nearest WORD boundary so may appear to be short by one
                 // byte, in which case - skip warning
                 $info['avdataend'] = $info['filesize'];
             }
             $nextRIFFoffset = $Original['avdataoffset'] + 8 + $thisfile_riff['header_size'];
             // 8 = "RIFF" + 32-bit offset
             while ($nextRIFFoffset < min($info['filesize'], $info['avdataend'])) {
                 if (!Helper::intValueSupported($nextRIFFoffset + 1024)) {
                     $info['error'][] = 'AVI extends beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB and PHP filesystem functions cannot read that far, playtime is probably wrong';
                     $info['warning'][] = '[avdataend] value may be incorrect, multiple AVIX chunks may be present';
                     break;
                 } else {
                     fseek($this->getid3->fp, $nextRIFFoffset, SEEK_SET);
                     $nextRIFFheader = fread($this->getid3->fp, 12);
                     if ($nextRIFFoffset == $info['avdataend'] - 1) {
                         if (substr($nextRIFFheader, 0, 1) == "") {
                             // RIFF padded to WORD boundary, we're actually already at the end
                             break;
                         }
                     }
                     $nextRIFFheaderID = substr($nextRIFFheader, 0, 4);
                     $nextRIFFsize = $this->EitherEndian2Int(substr($nextRIFFheader, 4, 4));
                     $nextRIFFtype = substr($nextRIFFheader, 8, 4);
                     $chunkdata = array();
                     $chunkdata['offset'] = $nextRIFFoffset + 8;
                     $chunkdata['size'] = $nextRIFFsize;
                     $nextRIFFoffset = $chunkdata['offset'] + $chunkdata['size'];
                     switch ($nextRIFFheaderID) {
                         case 'RIFF':
                             $info['avdataend'] = $nextRIFFoffset;
                             if (!Helper::intValueSupported($info['avdataend'])) {
                                 $info['error'][] = 'AVI extends beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB and PHP filesystem functions cannot read that far, playtime is probably wrong';
                                 $info['warning'][] = '[avdataend] value may be incorrect, multiple AVIX chunks may be present';
                             }
                             $chunkdata['chunks'] = $this->ParseRIFF($chunkdata['offset'] + 4, $chunkdata['offset'] + $chunkdata['size']);
                             if (!isset($thisfile_riff[$nextRIFFtype])) {
                                 $thisfile_riff[$nextRIFFtype] = array();
                             }
                             $thisfile_riff[$nextRIFFtype][] = $chunkdata;
                             break;
                         case 'JUNK':
                             // ignore
                             $thisfile_riff[$nextRIFFheaderID][] = $chunkdata;
                             break;
                         default:
                             if ($info['filesize'] == $chunkdata['offset'] - 8 + 128) {
                                 $DIVXTAG = $nextRIFFheader . fread($this->getid3->fp, 128 - 12);
                                 if (substr($DIVXTAG, -7) == 'DIVXTAG') {
                                     // DIVXTAG is supposed to be inside an IDVX chunk in a LIST chunk, but some bad encoders just slap it on the end of a file
                                     $info['warning'][] = 'Found wrongly-structured DIVXTAG at offset ' . (ftell($this->getid3->fp) - 128 + 12) . ', parsing anyway';
                                     $thisfile_riff['DIVXTAG'] = $this->ParseDIVXTAG($DIVXTAG);
                                     foreach ($thisfile_riff['DIVXTAG'] as $key => $value) {
                                         if ($value && !preg_match('#_id$#', $key)) {
                                             $thisfile_riff['comments'][$key][] = $value;
                                         }
                                     }
                                     break 2;
                                 }
                             }
                             $info['warning'][] = 'expecting "RIFF" or "JUNK" at ' . $nextRIFFoffset . ', found ' . Helper::PrintHexBytes(substr($nextRIFFheader, 0, 4)) . ' - skipping rest of file';
                             break 2;
                     }
                 }
             }
             if ($RIFFsubtype == 'WAVE') {
                 $thisfile_riff_WAVE =& $thisfile_riff['WAVE'];
             }
             break;
         default:
             $info['error'][] = 'Cannot parse RIFF (this is maybe not a RIFF / WAV / AVI file?) - expecting "FORM|RIFF|SDSS|RMP3" found "' . $RIFFsubtype . '" instead';
             unset($info['fileformat']);
             return false;
             break;
     }
     $streamindex = 0;
     switch ($RIFFsubtype) {
         case 'WAVE':
             if (empty($thisfile_audio['bitrate_mode'])) {
                 $thisfile_audio['bitrate_mode'] = 'cbr';
             }
             if (empty($thisfile_audio_dataformat)) {
                 $thisfile_audio_dataformat = 'wav';
             }
             if (isset($thisfile_riff_WAVE['data'][0]['offset'])) {
                 $info['avdataoffset'] = $thisfile_riff_WAVE['data'][0]['offset'] + 8;
                 $info['avdataend'] = $info['avdataoffset'] + $thisfile_riff_WAVE['data'][0]['size'];
             }
             if (isset($thisfile_riff_WAVE['fmt '][0]['data'])) {
                 $thisfile_riff_audio[$streamindex] = self::RIFFparseWAVEFORMATex($thisfile_riff_WAVE['fmt '][0]['data']);
                 $thisfile_audio['wformattag'] = $thisfile_riff_audio[$streamindex]['raw']['wFormatTag'];
                 if (!isset($thisfile_riff_audio[$streamindex]['bitrate']) || $thisfile_riff_audio[$streamindex]['bitrate'] == 0) {
                     $info['error'][] = 'Corrupt RIFF file: bitrate_audio == zero';
                     return false;
                 }
                 $thisfile_riff_raw['fmt '] = $thisfile_riff_audio[$streamindex]['raw'];
                 unset($thisfile_riff_audio[$streamindex]['raw']);
                 $thisfile_audio['streams'][$streamindex] = $thisfile_riff_audio[$streamindex];
                 $thisfile_audio = Helper::array_merge_noclobber($thisfile_audio, $thisfile_riff_audio[$streamindex]);
                 if (substr($thisfile_audio['codec'], 0, strlen('unknown: 0x')) == 'unknown: 0x') {
                     $info['warning'][] = 'Audio codec = ' . $thisfile_audio['codec'];
                 }
                 $thisfile_audio['bitrate'] = $thisfile_riff_audio[$streamindex]['bitrate'];
                 $info['playtime_seconds'] = (double) (($info['avdataend'] - $info['avdataoffset']) * 8 / $thisfile_audio['bitrate']);
                 $thisfile_audio['lossless'] = false;
                 if (isset($thisfile_riff_WAVE['data'][0]['offset']) && isset($thisfile_riff_raw['fmt ']['wFormatTag'])) {
                     switch ($thisfile_riff_raw['fmt ']['wFormatTag']) {
                         case 0x1:
                             // PCM
                             $thisfile_audio['lossless'] = true;
                             break;
                         case 0x2000:
                             // AC-3
                             $thisfile_audio_dataformat = 'ac3';
                             break;
                         default:
                             // do nothing
                             break;
                     }
                 }
                 $thisfile_audio['streams'][$streamindex]['wformattag'] = $thisfile_audio['wformattag'];
                 $thisfile_audio['streams'][$streamindex]['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
                 $thisfile_audio['streams'][$streamindex]['lossless'] = $thisfile_audio['lossless'];
                 $thisfile_audio['streams'][$streamindex]['dataformat'] = $thisfile_audio_dataformat;
             }
             if (isset($thisfile_riff_WAVE['rgad'][0]['data'])) {
                 // shortcuts
                 $rgadData =& $thisfile_riff_WAVE['rgad'][0]['data'];
                 $thisfile_riff_raw['rgad'] = array('track' => array(), 'album' => array());
                 $thisfile_riff_raw_rgad =& $thisfile_riff_raw['rgad'];
                 $thisfile_riff_raw_rgad_track =& $thisfile_riff_raw_rgad['track'];
                 $thisfile_riff_raw_rgad_album =& $thisfile_riff_raw_rgad['album'];
                 $thisfile_riff_raw_rgad['fPeakAmplitude'] = Helper::LittleEndian2Float(substr($rgadData, 0, 4));
                 $thisfile_riff_raw_rgad['nRadioRgAdjust'] = $this->EitherEndian2Int(substr($rgadData, 4, 2));
                 $thisfile_riff_raw_rgad['nAudiophileRgAdjust'] = $this->EitherEndian2Int(substr($rgadData, 6, 2));
                 $nRadioRgAdjustBitstring = str_pad(Helper::Dec2Bin($thisfile_riff_raw_rgad['nRadioRgAdjust']), 16, '0', STR_PAD_LEFT);
                 $nAudiophileRgAdjustBitstring = str_pad(Helper::Dec2Bin($thisfile_riff_raw_rgad['nAudiophileRgAdjust']), 16, '0', STR_PAD_LEFT);
                 $thisfile_riff_raw_rgad_track['name'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 0, 3));
                 $thisfile_riff_raw_rgad_track['originator'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 3, 3));
                 $thisfile_riff_raw_rgad_track['signbit'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 6, 1));
                 $thisfile_riff_raw_rgad_track['adjustment'] = Helper::Bin2Dec(substr($nRadioRgAdjustBitstring, 7, 9));
                 $thisfile_riff_raw_rgad_album['name'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 0, 3));
                 $thisfile_riff_raw_rgad_album['originator'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 3, 3));
                 $thisfile_riff_raw_rgad_album['signbit'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 6, 1));
                 $thisfile_riff_raw_rgad_album['adjustment'] = Helper::Bin2Dec(substr($nAudiophileRgAdjustBitstring, 7, 9));
                 $thisfile_riff['rgad']['peakamplitude'] = $thisfile_riff_raw_rgad['fPeakAmplitude'];
                 if ($thisfile_riff_raw_rgad_track['name'] != 0 && $thisfile_riff_raw_rgad_track['originator'] != 0) {
                     $thisfile_riff['rgad']['track']['name'] = Helper::RGADnameLookup($thisfile_riff_raw_rgad_track['name']);
                     $thisfile_riff['rgad']['track']['originator'] = Helper::RGADoriginatorLookup($thisfile_riff_raw_rgad_track['originator']);
                     $thisfile_riff['rgad']['track']['adjustment'] = Helper::RGADadjustmentLookup($thisfile_riff_raw_rgad_track['adjustment'], $thisfile_riff_raw_rgad_track['signbit']);
                 }
                 if ($thisfile_riff_raw_rgad_album['name'] != 0 && $thisfile_riff_raw_rgad_album['originator'] != 0) {
                     $thisfile_riff['rgad']['album']['name'] = Helper::RGADnameLookup($thisfile_riff_raw_rgad_album['name']);
                     $thisfile_riff['rgad']['album']['originator'] = Helper::RGADoriginatorLookup($thisfile_riff_raw_rgad_album['originator']);
                     $thisfile_riff['rgad']['album']['adjustment'] = Helper::RGADadjustmentLookup($thisfile_riff_raw_rgad_album['adjustment'], $thisfile_riff_raw_rgad_album['signbit']);
                 }
             }
             if (isset($thisfile_riff_WAVE['fact'][0]['data'])) {
                 $thisfile_riff_raw['fact']['NumberOfSamples'] = $this->EitherEndian2Int(substr($thisfile_riff_WAVE['fact'][0]['data'], 0, 4));
                 // This should be a good way of calculating exact playtime,
                 // but some sample files have had incorrect number of samples,
                 // so cannot use this method
                 // if (!empty($thisfile_riff_raw['fmt ']['nSamplesPerSec'])) {
                 //     $info['playtime_seconds'] = (float) $thisfile_riff_raw['fact']['NumberOfSamples'] / $thisfile_riff_raw['fmt ']['nSamplesPerSec'];
                 // }
             }
             if (!empty($thisfile_riff_raw['fmt ']['nAvgBytesPerSec'])) {
                 $thisfile_audio['bitrate'] = Helper::CastAsInt($thisfile_riff_raw['fmt ']['nAvgBytesPerSec'] * 8);
             }
             if (isset($thisfile_riff_WAVE['bext'][0]['data'])) {
                 // shortcut
                 $thisfile_riff_WAVE_bext_0 =& $thisfile_riff_WAVE['bext'][0];
                 $thisfile_riff_WAVE_bext_0['title'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 0, 256));
                 $thisfile_riff_WAVE_bext_0['author'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 256, 32));
                 $thisfile_riff_WAVE_bext_0['reference'] = trim(substr($thisfile_riff_WAVE_bext_0['data'], 288, 32));
                 $thisfile_riff_WAVE_bext_0['origin_date'] = substr($thisfile_riff_WAVE_bext_0['data'], 320, 10);
                 $thisfile_riff_WAVE_bext_0['origin_time'] = substr($thisfile_riff_WAVE_bext_0['data'], 330, 8);
                 $thisfile_riff_WAVE_bext_0['time_reference'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 338, 8));
                 $thisfile_riff_WAVE_bext_0['bwf_version'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_bext_0['data'], 346, 1));
                 $thisfile_riff_WAVE_bext_0['reserved'] = substr($thisfile_riff_WAVE_bext_0['data'], 347, 254);
                 $thisfile_riff_WAVE_bext_0['coding_history'] = explode("\r\n", trim(substr($thisfile_riff_WAVE_bext_0['data'], 601)));
                 if (preg_match('#^([0-9]{4}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_date'], $matches_bext_date)) {
                     if (preg_match('#^([0-9]{2}).([0-9]{2}).([0-9]{2})$#', $thisfile_riff_WAVE_bext_0['origin_time'], $matches_bext_time)) {
                         list($dummy, $bext_timestamp['year'], $bext_timestamp['month'], $bext_timestamp['day']) = $matches_bext_date;
                         list($dummy, $bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second']) = $matches_bext_time;
                         $thisfile_riff_WAVE_bext_0['origin_date_unix'] = gmmktime($bext_timestamp['hour'], $bext_timestamp['minute'], $bext_timestamp['second'], $bext_timestamp['month'], $bext_timestamp['day'], $bext_timestamp['year']);
                     } else {
                         $info['warning'][] = 'RIFF.WAVE.BEXT.origin_time is invalid';
                     }
                 } else {
                     $info['warning'][] = 'RIFF.WAVE.BEXT.origin_date is invalid';
                 }
                 $thisfile_riff['comments']['author'][] = $thisfile_riff_WAVE_bext_0['author'];
                 $thisfile_riff['comments']['title'][] = $thisfile_riff_WAVE_bext_0['title'];
             }
             if (isset($thisfile_riff_WAVE['MEXT'][0]['data'])) {
                 // shortcut
                 $thisfile_riff_WAVE_MEXT_0 =& $thisfile_riff_WAVE['MEXT'][0];
                 $thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 0, 2));
                 $thisfile_riff_WAVE_MEXT_0['flags']['homogenous'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x1);
                 if ($thisfile_riff_WAVE_MEXT_0['flags']['homogenous']) {
                     $thisfile_riff_WAVE_MEXT_0['flags']['padding'] = $thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x2 ? false : true;
                     $thisfile_riff_WAVE_MEXT_0['flags']['22_or_44'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x4);
                     $thisfile_riff_WAVE_MEXT_0['flags']['free_format'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['sound_information'] & 0x8);
                     $thisfile_riff_WAVE_MEXT_0['nominal_frame_size'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 2, 2));
                 }
                 $thisfile_riff_WAVE_MEXT_0['anciliary_data_length'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 6, 2));
                 $thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_MEXT_0['data'], 8, 2));
                 $thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_left'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x1);
                 $thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_free'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x2);
                 $thisfile_riff_WAVE_MEXT_0['flags']['anciliary_data_right'] = (bool) ($thisfile_riff_WAVE_MEXT_0['raw']['anciliary_data_def'] & 0x4);
             }
             if (isset($thisfile_riff_WAVE['cart'][0]['data'])) {
                 // shortcut
                 $thisfile_riff_WAVE_cart_0 =& $thisfile_riff_WAVE['cart'][0];
                 $thisfile_riff_WAVE_cart_0['version'] = substr($thisfile_riff_WAVE_cart_0['data'], 0, 4);
                 $thisfile_riff_WAVE_cart_0['title'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 4, 64));
                 $thisfile_riff_WAVE_cart_0['artist'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 68, 64));
                 $thisfile_riff_WAVE_cart_0['cut_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 132, 64));
                 $thisfile_riff_WAVE_cart_0['client_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 196, 64));
                 $thisfile_riff_WAVE_cart_0['category'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 260, 64));
                 $thisfile_riff_WAVE_cart_0['classification'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 324, 64));
                 $thisfile_riff_WAVE_cart_0['out_cue'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 388, 64));
                 $thisfile_riff_WAVE_cart_0['start_date'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 452, 10));
                 $thisfile_riff_WAVE_cart_0['start_time'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 462, 8));
                 $thisfile_riff_WAVE_cart_0['end_date'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 470, 10));
                 $thisfile_riff_WAVE_cart_0['end_time'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 480, 8));
                 $thisfile_riff_WAVE_cart_0['producer_app_id'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 488, 64));
                 $thisfile_riff_WAVE_cart_0['producer_app_version'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 552, 64));
                 $thisfile_riff_WAVE_cart_0['user_defined_text'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 616, 64));
                 $thisfile_riff_WAVE_cart_0['zero_db_reference'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_cart_0['data'], 680, 4), true);
                 for ($i = 0; $i < 8; ++$i) {
                     $thisfile_riff_WAVE_cart_0['post_time'][$i]['usage_fourcc'] = substr($thisfile_riff_WAVE_cart_0['data'], 684 + $i * 8, 4);
                     $thisfile_riff_WAVE_cart_0['post_time'][$i]['timer_value'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE_cart_0['data'], 684 + $i * 8 + 4, 4));
                 }
                 $thisfile_riff_WAVE_cart_0['url'] = trim(substr($thisfile_riff_WAVE_cart_0['data'], 748, 1024));
                 $thisfile_riff_WAVE_cart_0['tag_text'] = explode("\r\n", trim(substr($thisfile_riff_WAVE_cart_0['data'], 1772)));
                 $thisfile_riff['comments']['artist'][] = $thisfile_riff_WAVE_cart_0['artist'];
                 $thisfile_riff['comments']['title'][] = $thisfile_riff_WAVE_cart_0['title'];
             }
             if (isset($thisfile_riff_WAVE['SNDM'][0]['data'])) {
                 // SoundMiner metadata
                 // shortcuts
                 $thisfile_riff_WAVE_SNDM_0 =& $thisfile_riff_WAVE['SNDM'][0];
                 $thisfile_riff_WAVE_SNDM_0_data =& $thisfile_riff_WAVE_SNDM_0['data'];
                 $SNDM_startoffset = 0;
                 $SNDM_endoffset = $thisfile_riff_WAVE_SNDM_0['size'];
                 while ($SNDM_startoffset < $SNDM_endoffset) {
                     $SNDM_thisTagOffset = 0;
                     $SNDM_thisTagSize = Helper::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 4));
                     $SNDM_thisTagOffset += 4;
                     $SNDM_thisTagKey = substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 4);
                     $SNDM_thisTagOffset += 4;
                     $SNDM_thisTagDataSize = Helper::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 2));
                     $SNDM_thisTagOffset += 2;
                     $SNDM_thisTagDataFlags = Helper::BigEndian2Int(substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, 2));
                     $SNDM_thisTagOffset += 2;
                     $SNDM_thisTagDataText = substr($thisfile_riff_WAVE_SNDM_0_data, $SNDM_startoffset + $SNDM_thisTagOffset, $SNDM_thisTagDataSize);
                     $SNDM_thisTagOffset += $SNDM_thisTagDataSize;
                     if ($SNDM_thisTagSize != 4 + 4 + 2 + 2 + $SNDM_thisTagDataSize) {
                         $info['warning'][] = 'RIFF.WAVE.SNDM.data contains tag not expected length (expected: ' . $SNDM_thisTagSize . ', found: ' . (4 + 4 + 2 + 2 + $SNDM_thisTagDataSize) . ') at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
                         break;
                     } elseif ($SNDM_thisTagSize <= 0) {
                         $info['warning'][] = 'RIFF.WAVE.SNDM.data contains zero-size tag at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
                         break;
                     }
                     $SNDM_startoffset += $SNDM_thisTagSize;
                     $thisfile_riff_WAVE_SNDM_0['parsed_raw'][$SNDM_thisTagKey] = $SNDM_thisTagDataText;
                     if ($parsedkey = $this->RIFFwaveSNDMtagLookup($SNDM_thisTagKey)) {
                         $thisfile_riff_WAVE_SNDM_0['parsed'][$parsedkey] = $SNDM_thisTagDataText;
                     } else {
                         $info['warning'][] = 'RIFF.WAVE.SNDM contains unknown tag "' . $SNDM_thisTagKey . '" at offset ' . $SNDM_startoffset . ' (file offset ' . ($thisfile_riff_WAVE_SNDM_0['offset'] + $SNDM_startoffset) . ')';
                     }
                 }
                 $tagmapping = array('tracktitle' => 'title', 'category' => 'genre', 'cdtitle' => 'album', 'tracktitle' => 'title');
                 foreach ($tagmapping as $fromkey => $tokey) {
                     if (isset($thisfile_riff_WAVE_SNDM_0['parsed'][$fromkey])) {
                         $thisfile_riff['comments'][$tokey][] = $thisfile_riff_WAVE_SNDM_0['parsed'][$fromkey];
                     }
                 }
             }
             if (isset($thisfile_riff_WAVE['iXML'][0]['data'])) {
                 // requires functions simplexml_load_string and get_object_vars
                 if ($parsedXML = Helper::XML2array($thisfile_riff_WAVE['iXML'][0]['data'])) {
                     $thisfile_riff_WAVE['iXML'][0]['parsed'] = $parsedXML;
                     if (isset($parsedXML['SPEED']['MASTER_SPEED'])) {
                         @(list($numerator, $denominator) = explode('/', $parsedXML['SPEED']['MASTER_SPEED']));
                         $thisfile_riff_WAVE['iXML'][0]['master_speed'] = $numerator / ($denominator ? $denominator : 1000);
                     }
                     if (isset($parsedXML['SPEED']['TIMECODE_RATE'])) {
                         @(list($numerator, $denominator) = explode('/', $parsedXML['SPEED']['TIMECODE_RATE']));
                         $thisfile_riff_WAVE['iXML'][0]['timecode_rate'] = $numerator / ($denominator ? $denominator : 1000);
                     }
                     if (isset($parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_LO']) && !empty($parsedXML['SPEED']['TIMESTAMP_SAMPLE_RATE']) && !empty($thisfile_riff_WAVE['iXML'][0]['timecode_rate'])) {
                         $samples_since_midnight = floatval(ltrim($parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_HI'] . $parsedXML['SPEED']['TIMESTAMP_SAMPLES_SINCE_MIDNIGHT_LO'], '0'));
                         $thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] = $samples_since_midnight / $parsedXML['SPEED']['TIMESTAMP_SAMPLE_RATE'];
                         $h = floor($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] / 3600);
                         $m = floor(($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600) / 60);
                         $s = floor($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600 - $m * 60);
                         $f = ($thisfile_riff_WAVE['iXML'][0]['timecode_seconds'] - $h * 3600 - $m * 60 - $s) * $thisfile_riff_WAVE['iXML'][0]['timecode_rate'];
                         $thisfile_riff_WAVE['iXML'][0]['timecode_string'] = sprintf('%02d:%02d:%02d:%05.2f', $h, $m, $s, $f);
                         $thisfile_riff_WAVE['iXML'][0]['timecode_string_round'] = sprintf('%02d:%02d:%02d:%02d', $h, $m, $s, round($f));
                     }
                     unset($parsedXML);
                 }
             }
             if (!isset($thisfile_audio['bitrate']) && isset($thisfile_riff_audio[$streamindex]['bitrate'])) {
                 $thisfile_audio['bitrate'] = $thisfile_riff_audio[$streamindex]['bitrate'];
                 $info['playtime_seconds'] = (double) (($info['avdataend'] - $info['avdataoffset']) * 8 / $thisfile_audio['bitrate']);
             }
             if (!empty($info['wavpack'])) {
                 $thisfile_audio_dataformat = 'wavpack';
                 $thisfile_audio['bitrate_mode'] = 'vbr';
                 $thisfile_audio['encoder'] = 'WavPack v' . $info['wavpack']['version'];
                 // Reset to the way it was - RIFF parsing will have messed this up
                 $info['avdataend'] = $Original['avdataend'];
                 $thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) * 8 / $info['playtime_seconds'];
                 fseek($this->getid3->fp, $info['avdataoffset'] - 44, SEEK_SET);
                 $RIFFdata = fread($this->getid3->fp, 44);
                 $OrignalRIFFheaderSize = Helper::LittleEndian2Int(substr($RIFFdata, 4, 4)) + 8;
                 $OrignalRIFFdataSize = Helper::LittleEndian2Int(substr($RIFFdata, 40, 4)) + 44;
                 if ($OrignalRIFFheaderSize > $OrignalRIFFdataSize) {
                     $info['avdataend'] -= $OrignalRIFFheaderSize - $OrignalRIFFdataSize;
                     fseek($this->getid3->fp, $info['avdataend'], SEEK_SET);
                     $RIFFdata .= fread($this->getid3->fp, $OrignalRIFFheaderSize - $OrignalRIFFdataSize);
                 }
                 // move the data chunk after all other chunks (if any)
                 // so that the RIFF parser doesn't see EOF when trying
                 // to skip over the data chunk
                 $RIFFdata = substr($RIFFdata, 0, 36) . substr($RIFFdata, 44) . substr($RIFFdata, 36, 8);
                 $getid3_riff = new self($this->getid3);
                 $getid3_riff->ParseRIFFdata($RIFFdata);
                 unset($getid3_riff);
             }
             if (isset($thisfile_riff_raw['fmt ']['wFormatTag'])) {
                 switch ($thisfile_riff_raw['fmt ']['wFormatTag']) {
                     case 0x1:
                         // PCM
                         if (!empty($info['ac3'])) {
                             // Dolby Digital WAV files masquerade as PCM-WAV, but they're not
                             $thisfile_audio['wformattag'] = 0x2000;
                             $thisfile_audio['codec'] = $this->RIFFwFormatTagLookup($thisfile_audio['wformattag']);
                             $thisfile_audio['lossless'] = false;
                             $thisfile_audio['bitrate'] = $info['ac3']['bitrate'];
                             $thisfile_audio['sample_rate'] = $info['ac3']['sample_rate'];
                         }
                         break;
                     case 0x8ae:
                         // ClearJump LiteWave
                         $thisfile_audio['bitrate_mode'] = 'vbr';
                         $thisfile_audio_dataformat = 'litewave';
                         //typedef struct tagSLwFormat {
                         //  WORD    m_wCompFormat;     // low byte defines compression method, high byte is compression flags
                         //  DWORD   m_dwScale;         // scale factor for lossy compression
                         //  DWORD   m_dwBlockSize;     // number of samples in encoded blocks
                         //  WORD    m_wQuality;        // alias for the scale factor
                         //  WORD    m_wMarkDistance;   // distance between marks in bytes
                         //  WORD    m_wReserved;
                         //
                         //  //following paramters are ignored if CF_FILESRC is not set
                         //  DWORD   m_dwOrgSize;       // original file size in bytes
                         //  WORD    m_bFactExists;     // indicates if 'fact' chunk exists in the original file
                         //  DWORD   m_dwRiffChunkSize; // riff chunk size in the original file
                         //
                         //  PCMWAVEFORMAT m_OrgWf;     // original wave format
                         // }SLwFormat, *PSLwFormat;
                         // shortcut
                         $thisfile_riff['litewave']['raw'] = array();
                         $thisfile_riff_litewave =& $thisfile_riff['litewave'];
                         $thisfile_riff_litewave_raw =& $thisfile_riff_litewave['raw'];
                         $thisfile_riff_litewave_raw['compression_method'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 18, 1));
                         $thisfile_riff_litewave_raw['compression_flags'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 19, 1));
                         $thisfile_riff_litewave_raw['m_dwScale'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 20, 4));
                         $thisfile_riff_litewave_raw['m_dwBlockSize'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 24, 4));
                         $thisfile_riff_litewave_raw['m_wQuality'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 28, 2));
                         $thisfile_riff_litewave_raw['m_wMarkDistance'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 30, 2));
                         $thisfile_riff_litewave_raw['m_wReserved'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 32, 2));
                         $thisfile_riff_litewave_raw['m_dwOrgSize'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 34, 4));
                         $thisfile_riff_litewave_raw['m_bFactExists'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 38, 2));
                         $thisfile_riff_litewave_raw['m_dwRiffChunkSize'] = Helper::LittleEndian2Int(substr($thisfile_riff_WAVE['fmt '][0]['data'], 40, 4));
                         //$thisfile_riff_litewave['quality_factor'] = intval(round((2000 - $thisfile_riff_litewave_raw['m_dwScale']) / 20));
                         $thisfile_riff_litewave['quality_factor'] = $thisfile_riff_litewave_raw['m_wQuality'];
                         $thisfile_riff_litewave['flags']['raw_source'] = $thisfile_riff_litewave_raw['compression_flags'] & 0x1 ? false : true;
                         $thisfile_riff_litewave['flags']['vbr_blocksize'] = $thisfile_riff_litewave_raw['compression_flags'] & 0x2 ? false : true;
                         $thisfile_riff_litewave['flags']['seekpoints'] = (bool) ($thisfile_riff_litewave_raw['compression_flags'] & 0x4);
                         $thisfile_audio['lossless'] = $thisfile_riff_litewave_raw['m_wQuality'] == 100 ? true : false;
                         $thisfile_audio['encoder_options'] = '-q' . $thisfile_riff_litewave['quality_factor'];
                         break;
                     default:
                         break;
                 }
             }
             if ($info['avdataend'] > $info['filesize']) {
                 switch (!empty($thisfile_audio_dataformat) ? $thisfile_audio_dataformat : '') {
                     case 'wavpack':
                         // WavPack
                     // WavPack
                     case 'lpac':
                         // LPAC
                     // LPAC
                     case 'ofr':
                         // OptimFROG
                     // OptimFROG
                     case 'ofs':
                         // OptimFROG DualStream
                         // lossless compressed audio formats that keep original RIFF headers - skip warning
                         break;
                     case 'litewave':
                         if ($info['avdataend'] - $info['filesize'] == 1) {
                             // LiteWave appears to incorrectly *not* pad actual output file
                             // to nearest WORD boundary so may appear to be short by one
                             // byte, in which case - skip warning
                         } else {
                             // Short by more than one byte, throw warning
                             $info['warning'][] = 'Probably truncated file - expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
                             $info['avdataend'] = $info['filesize'];
                         }
                         break;
                     default:
                         if ($info['avdataend'] - $info['filesize'] == 1 && $thisfile_riff[$RIFFsubtype]['data'][0]['size'] % 2 == 0 && ($info['filesize'] - $info['avdataoffset']) % 2 == 1) {
                             // output file appears to be incorrectly *not* padded to nearest WORD boundary
                             // Output less severe warning
                             $info['warning'][] = 'File should probably be padded to nearest WORD boundary, but it is not (expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' therefore short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
                             $info['avdataend'] = $info['filesize'];
                         } else {
                             // Short by more than one byte, throw warning
                             $info['warning'][] = 'Probably truncated file - expecting ' . $thisfile_riff[$RIFFsubtype]['data'][0]['size'] . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($thisfile_riff[$RIFFsubtype]['data'][0]['size'] - ($info['filesize'] - $info['avdataoffset'])) . ' bytes)';
                             $info['avdataend'] = $info['filesize'];
                         }
                         break;
                 }
             }
             if (!empty($info['mpeg']['audio']['LAME']['audio_bytes'])) {
                 if ($info['avdataend'] - $info['avdataoffset'] - $info['mpeg']['audio']['LAME']['audio_bytes'] == 1) {
                     --$info['avdataend'];
                     $info['warning'][] = 'Extra null byte at end of MP3 data assumed to be RIFF padding and therefore ignored';
                 }
             }
             if (isset($thisfile_audio_dataformat) && $thisfile_audio_dataformat == 'ac3') {
                 unset($thisfile_audio['bits_per_sample']);
                 if (!empty($info['ac3']['bitrate']) && $info['ac3']['bitrate'] != $thisfile_audio['bitrate']) {
                     $thisfile_audio['bitrate'] = $info['ac3']['bitrate'];
                 }
             }
             break;
         case 'AVI ':
             $thisfile_video['bitrate_mode'] = 'vbr';
             // maybe not, but probably
             $thisfile_video['dataformat'] = 'avi';
             $info['mime_type'] = 'video/avi';
             if (isset($thisfile_riff[$RIFFsubtype]['movi']['offset'])) {
                 $info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['movi']['offset'] + 8;
                 if (isset($thisfile_riff['AVIX'])) {
                     $info['avdataend'] = $thisfile_riff['AVIX'][count($thisfile_riff['AVIX']) - 1]['chunks']['movi']['offset'] + $thisfile_riff['AVIX'][count($thisfile_riff['AVIX']) - 1]['chunks']['movi']['size'];
                 } else {
                     $info['avdataend'] = $thisfile_riff['AVI ']['movi']['offset'] + $thisfile_riff['AVI ']['movi']['size'];
                 }
                 if ($info['avdataend'] > $info['filesize']) {
                     $info['warning'][] = 'Probably truncated file - expecting ' . ($info['avdataend'] - $info['avdataoffset']) . ' bytes of data, only found ' . ($info['filesize'] - $info['avdataoffset']) . ' (short by ' . ($info['avdataend'] - $info['filesize']) . ' bytes)';
                     $info['avdataend'] = $info['filesize'];
                 }
             }
             if (isset($thisfile_riff['AVI ']['hdrl']['strl']['indx'])) {
                 //$bIndexType = array(
                 //    0x00 => 'AVI_INDEX_OF_INDEXES',
                 //	0x01 => 'AVI_INDEX_OF_CHUNKS',
                 //	0x80 => 'AVI_INDEX_IS_DATA',
                 //);
                 //$bIndexSubtype = array(
                 //	0x01 => array(
                 //		0x01 => 'AVI_INDEX_2FIELD',
                 //	),
                 //);
                 foreach ($thisfile_riff['AVI ']['hdrl']['strl']['indx'] as $streamnumber => $steamdataarray) {
                     $thisfile_riff_avi_hdrl_strl_indx_stream_data =& $thisfile_riff['AVI ']['hdrl']['strl']['indx'][$streamnumber]['data'];
                     $thisfile_riff_raw['indx'][$streamnumber]['wLongsPerEntry'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 0, 2));
                     $thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 2, 1));
                     $thisfile_riff_raw['indx'][$streamnumber]['bIndexType'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 3, 1));
                     $thisfile_riff_raw['indx'][$streamnumber]['nEntriesInUse'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 4, 4));
                     $thisfile_riff_raw['indx'][$streamnumber]['dwChunkId'] = substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 8, 4);
                     $thisfile_riff_raw['indx'][$streamnumber]['dwReserved'] = $this->EitherEndian2Int(substr($thisfile_riff_avi_hdrl_strl_indx_stream_data, 12, 4));
                     //$thisfile_riff_raw['indx'][$streamnumber]['bIndexType_name']    =    $bIndexType[$thisfile_riff_raw['indx'][$streamnumber]['bIndexType']];
                     //$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType_name'] = $bIndexSubtype[$thisfile_riff_raw['indx'][$streamnumber]['bIndexType']][$thisfile_riff_raw['indx'][$streamnumber]['bIndexSubType']];
                     unset($thisfile_riff_avi_hdrl_strl_indx_stream_data);
                 }
             }
             if (isset($thisfile_riff['AVI ']['hdrl']['avih'][$streamindex]['data'])) {
                 $avihData = $thisfile_riff['AVI ']['hdrl']['avih'][$streamindex]['data'];
                 // shortcut
                 $thisfile_riff_raw['avih'] = array();
                 $thisfile_riff_raw_avih =& $thisfile_riff_raw['avih'];
                 $thisfile_riff_raw_avih['dwMicroSecPerFrame'] = $this->EitherEndian2Int(substr($avihData, 0, 4));
                 // frame display rate (or 0L)
                 if ($thisfile_riff_raw_avih['dwMicroSecPerFrame'] == 0) {
                     $info['error'][] = 'Corrupt RIFF file: avih.dwMicroSecPerFrame == zero';
                     return false;
                 }
                 $thisfile_riff_raw_avih['dwMaxBytesPerSec'] = $this->EitherEndian2Int(substr($avihData, 4, 4));
                 // max. transfer rate
                 $thisfile_riff_raw_avih['dwPaddingGranularity'] = $this->EitherEndian2Int(substr($avihData, 8, 4));
                 // pad to multiples of this size; normally 2K.
                 $thisfile_riff_raw_avih['dwFlags'] = $this->EitherEndian2Int(substr($avihData, 12, 4));
                 // the ever-present flags
                 $thisfile_riff_raw_avih['dwTotalFrames'] = $this->EitherEndian2Int(substr($avihData, 16, 4));
                 // # frames in file
                 $thisfile_riff_raw_avih['dwInitialFrames'] = $this->EitherEndian2Int(substr($avihData, 20, 4));
                 $thisfile_riff_raw_avih['dwStreams'] = $this->EitherEndian2Int(substr($avihData, 24, 4));
                 $thisfile_riff_raw_avih['dwSuggestedBufferSize'] = $this->EitherEndian2Int(substr($avihData, 28, 4));
                 $thisfile_riff_raw_avih['dwWidth'] = $this->EitherEndian2Int(substr($avihData, 32, 4));
                 $thisfile_riff_raw_avih['dwHeight'] = $this->EitherEndian2Int(substr($avihData, 36, 4));
                 $thisfile_riff_raw_avih['dwScale'] = $this->EitherEndian2Int(substr($avihData, 40, 4));
                 $thisfile_riff_raw_avih['dwRate'] = $this->EitherEndian2Int(substr($avihData, 44, 4));
                 $thisfile_riff_raw_avih['dwStart'] = $this->EitherEndian2Int(substr($avihData, 48, 4));
                 $thisfile_riff_raw_avih['dwLength'] = $this->EitherEndian2Int(substr($avihData, 52, 4));
                 $thisfile_riff_raw_avih['flags']['hasindex'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x10);
                 $thisfile_riff_raw_avih['flags']['mustuseindex'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x20);
                 $thisfile_riff_raw_avih['flags']['interleaved'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x100);
                 $thisfile_riff_raw_avih['flags']['trustcktype'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x800);
                 $thisfile_riff_raw_avih['flags']['capturedfile'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x10000);
                 $thisfile_riff_raw_avih['flags']['copyrighted'] = (bool) ($thisfile_riff_raw_avih['dwFlags'] & 0x20010);
                 // shortcut
                 $thisfile_riff_video[$streamindex] = array();
                 $thisfile_riff_video_current =& $thisfile_riff_video[$streamindex];
                 if ($thisfile_riff_raw_avih['dwWidth'] > 0) {
                     $thisfile_riff_video_current['frame_width'] = $thisfile_riff_raw_avih['dwWidth'];
                     $thisfile_video['resolution_x'] = $thisfile_riff_video_current['frame_width'];
                 }
                 if ($thisfile_riff_raw_avih['dwHeight'] > 0) {
                     $thisfile_riff_video_current['frame_height'] = $thisfile_riff_raw_avih['dwHeight'];
                     $thisfile_video['resolution_y'] = $thisfile_riff_video_current['frame_height'];
                 }
                 if ($thisfile_riff_raw_avih['dwTotalFrames'] > 0) {
                     $thisfile_riff_video_current['total_frames'] = $thisfile_riff_raw_avih['dwTotalFrames'];
                     $thisfile_video['total_frames'] = $thisfile_riff_video_current['total_frames'];
                 }
                 $thisfile_riff_video_current['frame_rate'] = round(1000000 / $thisfile_riff_raw_avih['dwMicroSecPerFrame'], 3);
                 $thisfile_video['frame_rate'] = $thisfile_riff_video_current['frame_rate'];
             }
             if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strh'][0]['data'])) {
                 if (is_array($thisfile_riff['AVI ']['hdrl']['strl']['strh'])) {
                     for ($i = 0; $i < count($thisfile_riff['AVI ']['hdrl']['strl']['strh']); ++$i) {
                         if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'])) {
                             $strhData = $thisfile_riff['AVI ']['hdrl']['strl']['strh'][$i]['data'];
                             $strhfccType = substr($strhData, 0, 4);
                             if (isset($thisfile_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'])) {
                                 $strfData = $thisfile_riff['AVI ']['hdrl']['strl']['strf'][$i]['data'];
                                 // shortcut
                                 $thisfile_riff_raw_strf_strhfccType_streamindex =& $thisfile_riff_raw['strf'][$strhfccType][$streamindex];
                                 switch ($strhfccType) {
                                     case 'auds':
                                         $thisfile_audio['bitrate_mode'] = 'cbr';
                                         $thisfile_audio_dataformat = 'wav';
                                         if (isset($thisfile_riff_audio) && is_array($thisfile_riff_audio)) {
                                             $streamindex = count($thisfile_riff_audio);
                                         }
                                         $thisfile_riff_audio[$streamindex] = self::RIFFparseWAVEFORMATex($strfData);
                                         $thisfile_audio['wformattag'] = $thisfile_riff_audio[$streamindex]['raw']['wFormatTag'];
                                         // shortcut
                                         $thisfile_audio['streams'][$streamindex] = $thisfile_riff_audio[$streamindex];
                                         $thisfile_audio_streams_currentstream =& $thisfile_audio['streams'][$streamindex];
                                         if ($thisfile_audio_streams_currentstream['bits_per_sample'] == 0) {
                                             unset($thisfile_audio_streams_currentstream['bits_per_sample']);
                                         }
                                         $thisfile_audio_streams_currentstream['wformattag'] = $thisfile_audio_streams_currentstream['raw']['wFormatTag'];
                                         unset($thisfile_audio_streams_currentstream['raw']);
                                         // shortcut
                                         $thisfile_riff_raw['strf'][$strhfccType][$streamindex] = $thisfile_riff_audio[$streamindex]['raw'];
                                         unset($thisfile_riff_audio[$streamindex]['raw']);
                                         $thisfile_audio = Helper::array_merge_noclobber($thisfile_audio, $thisfile_riff_audio[$streamindex]);
                                         $thisfile_audio['lossless'] = false;
                                         switch ($thisfile_riff_raw_strf_strhfccType_streamindex['wFormatTag']) {
                                             case 0x1:
                                                 // PCM
                                                 $thisfile_audio_dataformat = 'wav';
                                                 $thisfile_audio['lossless'] = true;
                                                 break;
                                             case 0x50:
                                                 // MPEG Layer 2 or Layer 1
                                                 $thisfile_audio_dataformat = 'mp2';
                                                 // Assume Layer-2
                                                 break;
                                             case 0x55:
                                                 // MPEG Layer 3
                                                 $thisfile_audio_dataformat = 'mp3';
                                                 break;
                                             case 0xff:
                                                 // AAC
                                                 $thisfile_audio_dataformat = 'aac';
                                                 break;
                                             case 0x161:
                                                 // Windows Media v7 / v8 / v9
                                             // Windows Media v7 / v8 / v9
                                             case 0x162:
                                                 // Windows Media Professional v9
                                             // Windows Media Professional v9
                                             case 0x163:
                                                 // Windows Media Lossess v9
                                                 $thisfile_audio_dataformat = 'wma';
                                                 break;
                                             case 0x2000:
                                                 // AC-3
                                                 $thisfile_audio_dataformat = 'ac3';
                                                 break;
                                             case 0x2001:
                                                 // DTS
                                                 $thisfile_audio_dataformat = 'dts';
                                                 break;
                                             default:
                                                 $thisfile_audio_dataformat = 'wav';
                                                 break;
                                         }
                                         $thisfile_audio_streams_currentstream['dataformat'] = $thisfile_audio_dataformat;
                                         $thisfile_audio_streams_currentstream['lossless'] = $thisfile_audio['lossless'];
                                         $thisfile_audio_streams_currentstream['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
                                         break;
                                     case 'iavs':
                                     case 'vids':
                                         // shortcut
                                         $thisfile_riff_raw['strh'][$i] = array();
                                         $thisfile_riff_raw_strh_current =& $thisfile_riff_raw['strh'][$i];
                                         $thisfile_riff_raw_strh_current['fccType'] = substr($strhData, 0, 4);
                                         // same as $strhfccType;
                                         $thisfile_riff_raw_strh_current['fccHandler'] = substr($strhData, 4, 4);
                                         $thisfile_riff_raw_strh_current['dwFlags'] = $this->EitherEndian2Int(substr($strhData, 8, 4));
                                         // Contains AVITF_* flags
                                         $thisfile_riff_raw_strh_current['wPriority'] = $this->EitherEndian2Int(substr($strhData, 12, 2));
                                         $thisfile_riff_raw_strh_current['wLanguage'] = $this->EitherEndian2Int(substr($strhData, 14, 2));
                                         $thisfile_riff_raw_strh_current['dwInitialFrames'] = $this->EitherEndian2Int(substr($strhData, 16, 4));
                                         $thisfile_riff_raw_strh_current['dwScale'] = $this->EitherEndian2Int(substr($strhData, 20, 4));
                                         $thisfile_riff_raw_strh_current['dwRate'] = $this->EitherEndian2Int(substr($strhData, 24, 4));
                                         $thisfile_riff_raw_strh_current['dwStart'] = $this->EitherEndian2Int(substr($strhData, 28, 4));
                                         $thisfile_riff_raw_strh_current['dwLength'] = $this->EitherEndian2Int(substr($strhData, 32, 4));
                                         $thisfile_riff_raw_strh_current['dwSuggestedBufferSize'] = $this->EitherEndian2Int(substr($strhData, 36, 4));
                                         $thisfile_riff_raw_strh_current['dwQuality'] = $this->EitherEndian2Int(substr($strhData, 40, 4));
                                         $thisfile_riff_raw_strh_current['dwSampleSize'] = $this->EitherEndian2Int(substr($strhData, 44, 4));
                                         $thisfile_riff_raw_strh_current['rcFrame'] = $this->EitherEndian2Int(substr($strhData, 48, 4));
                                         $thisfile_riff_video_current['codec'] = self::RIFFfourccLookup($thisfile_riff_raw_strh_current['fccHandler']);
                                         $thisfile_video['fourcc'] = $thisfile_riff_raw_strh_current['fccHandler'];
                                         if (!$thisfile_riff_video_current['codec'] && isset($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']) && self::RIFFfourccLookup($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'])) {
                                             $thisfile_riff_video_current['codec'] = self::RIFFfourccLookup($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']);
                                             $thisfile_video['fourcc'] = $thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'];
                                         }
                                         $thisfile_video['codec'] = $thisfile_riff_video_current['codec'];
                                         $thisfile_video['pixel_aspect_ratio'] = (double) 1;
                                         switch ($thisfile_riff_raw_strh_current['fccHandler']) {
                                             case 'HFYU':
                                                 // Huffman Lossless Codec
                                             // Huffman Lossless Codec
                                             case 'IRAW':
                                                 // Intel YUV Uncompressed
                                             // Intel YUV Uncompressed
                                             case 'YUY2':
                                                 // Uncompressed YUV 4:2:2
                                                 $thisfile_video['lossless'] = true;
                                                 break;
                                             default:
                                                 $thisfile_video['lossless'] = false;
                                                 break;
                                         }
                                         switch ($strhfccType) {
                                             case 'vids':
                                                 $thisfile_riff_raw_strf_strhfccType_streamindex = self::ParseBITMAPINFOHEADER(substr($strfData, 0, 40), $info['fileformat'] == 'riff');
                                                 //echo '<pre>'.print_r($thisfile_riff_raw_strf_strhfccType_streamindex, true).'</pre>';
                                                 $thisfile_video['bits_per_sample'] = $thisfile_riff_raw_strf_strhfccType_streamindex['biBitCount'];
                                                 if ($thisfile_riff_video_current['codec'] == 'DV') {
                                                     $thisfile_riff_video_current['dv_type'] = 2;
                                                 }
                                                 break;
                                             case 'iavs':
                                                 $thisfile_riff_video_current['dv_type'] = 1;
                                                 break;
                                         }
                                         break;
                                     default:
                                         $info['warning'][] = 'Unhandled fccType for stream (' . $i . '): "' . $strhfccType . '"';
                                         break;
                                 }
                             }
                         }
                         if (isset($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'])) {
                             $thisfile_video['fourcc'] = $thisfile_riff_raw_strf_strhfccType_streamindex['fourcc'];
                             if (self::RIFFfourccLookup($thisfile_video['fourcc'])) {
                                 $thisfile_riff_video_current['codec'] = self::RIFFfourccLookup($thisfile_video['fourcc']);
                                 $thisfile_video['codec'] = $thisfile_riff_video_current['codec'];
                             }
                             switch ($thisfile_riff_raw_strf_strhfccType_streamindex['fourcc']) {
                                 case 'HFYU':
                                     // Huffman Lossless Codec
                                 // Huffman Lossless Codec
                                 case 'IRAW':
                                     // Intel YUV Uncompressed
                                 // Intel YUV Uncompressed
                                 case 'YUY2':
                                     // Uncompressed YUV 4:2:2
                                     $thisfile_video['lossless'] = true;
                                     //$thisfile_video['bits_per_sample'] = 24;
                                     break;
                                 default:
                                     $thisfile_video['lossless'] = false;
                                     //$thisfile_video['bits_per_sample'] = 24;
                                     break;
                             }
                         }
                     }
                 }
             }
             break;
         case 'CDDA':
             $thisfile_audio['bitrate_mode'] = 'cbr';
             $thisfile_audio_dataformat = 'cda';
             $thisfile_audio['lossless'] = true;
             unset($info['mime_type']);
             $info['avdataoffset'] = 44;
             if (isset($thisfile_riff['CDDA']['fmt '][0]['data'])) {
                 // shortcut
                 $thisfile_riff_CDDA_fmt_0 =& $thisfile_riff['CDDA']['fmt '][0];
                 $thisfile_riff_CDDA_fmt_0['unknown1'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 0, 2));
                 $thisfile_riff_CDDA_fmt_0['track_num'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 2, 2));
                 $thisfile_riff_CDDA_fmt_0['disc_id'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 4, 4));
                 $thisfile_riff_CDDA_fmt_0['start_offset_frame'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 8, 4));
                 $thisfile_riff_CDDA_fmt_0['playtime_frames'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 12, 4));
                 $thisfile_riff_CDDA_fmt_0['unknown6'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 16, 4));
                 $thisfile_riff_CDDA_fmt_0['unknown7'] = $this->EitherEndian2Int(substr($thisfile_riff_CDDA_fmt_0['data'], 20, 4));
                 $thisfile_riff_CDDA_fmt_0['start_offset_seconds'] = (double) $thisfile_riff_CDDA_fmt_0['start_offset_frame'] / 75;
                 $thisfile_riff_CDDA_fmt_0['playtime_seconds'] = (double) $thisfile_riff_CDDA_fmt_0['playtime_frames'] / 75;
                 $info['comments']['track'] = $thisfile_riff_CDDA_fmt_0['track_num'];
                 $info['playtime_seconds'] = $thisfile_riff_CDDA_fmt_0['playtime_seconds'];
                 // hardcoded data for CD-audio
                 $thisfile_audio['sample_rate'] = 44100;
                 $thisfile_audio['channels'] = 2;
                 $thisfile_audio['bits_per_sample'] = 16;
                 $thisfile_audio['bitrate'] = $thisfile_audio['sample_rate'] * $thisfile_audio['channels'] * $thisfile_audio['bits_per_sample'];
                 $thisfile_audio['bitrate_mode'] = 'cbr';
             }
             break;
         case 'AIFF':
         case 'AIFC':
             $thisfile_audio['bitrate_mode'] = 'cbr';
             $thisfile_audio_dataformat = 'aiff';
             $thisfile_audio['lossless'] = true;
             $info['mime_type'] = 'audio/x-aiff';
             if (isset($thisfile_riff[$RIFFsubtype]['SSND'][0]['offset'])) {
                 $info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['SSND'][0]['offset'] + 8;
                 $info['avdataend'] = $info['avdataoffset'] + $thisfile_riff[$RIFFsubtype]['SSND'][0]['size'];
                 if ($info['avdataend'] > $info['filesize']) {
                     if ($info['avdataend'] == $info['filesize'] + 1 && $info['filesize'] % 2 == 1) {
                         // structures rounded to 2-byte boundary, but dumb encoders
                         // forget to pad end of file to make this actually work
                     } else {
                         $info['warning'][] = 'Probable truncated AIFF file: expecting ' . $thisfile_riff[$RIFFsubtype]['SSND'][0]['size'] . ' bytes of audio data, only ' . ($info['filesize'] - $info['avdataoffset']) . ' bytes found';
                     }
                     $info['avdataend'] = $info['filesize'];
                 }
             }
             if (isset($thisfile_riff[$RIFFsubtype]['COMM'][0]['data'])) {
                 // shortcut
                 $thisfile_riff_RIFFsubtype_COMM_0_data =& $thisfile_riff[$RIFFsubtype]['COMM'][0]['data'];
                 $thisfile_riff_audio['channels'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 0, 2), true);
                 $thisfile_riff_audio['total_samples'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 2, 4), false);
                 $thisfile_riff_audio['bits_per_sample'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 6, 2), true);
                 $thisfile_riff_audio['sample_rate'] = (int) Helper::BigEndian2Float(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 8, 10));
                 if ($thisfile_riff[$RIFFsubtype]['COMM'][0]['size'] > 18) {
                     $thisfile_riff_audio['codec_fourcc'] = substr($thisfile_riff_RIFFsubtype_COMM_0_data, 18, 4);
                     $CodecNameSize = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_COMM_0_data, 22, 1), false);
                     $thisfile_riff_audio['codec_name'] = substr($thisfile_riff_RIFFsubtype_COMM_0_data, 23, $CodecNameSize);
                     switch ($thisfile_riff_audio['codec_name']) {
                         case 'NONE':
                             $thisfile_audio['codec'] = 'Pulse Code Modulation (PCM)';
                             $thisfile_audio['lossless'] = true;
                             break;
                         case '':
                             switch ($thisfile_riff_audio['codec_fourcc']) {
                                 // http://developer.apple.com/qa/snd/snd07.html
                                 case 'sowt':
                                     $thisfile_riff_audio['codec_name'] = 'Two\'s Compliment Little-Endian PCM';
                                     $thisfile_audio['lossless'] = true;
                                     break;
                                 case 'twos':
                                     $thisfile_riff_audio['codec_name'] = 'Two\'s Compliment Big-Endian PCM';
                                     $thisfile_audio['lossless'] = true;
                                     break;
                                 default:
                                     break;
                             }
                             break;
                         default:
                             $thisfile_audio['codec'] = $thisfile_riff_audio['codec_name'];
                             $thisfile_audio['lossless'] = false;
                             break;
                     }
                 }
                 $thisfile_audio['channels'] = $thisfile_riff_audio['channels'];
                 if ($thisfile_riff_audio['bits_per_sample'] > 0) {
                     $thisfile_audio['bits_per_sample'] = $thisfile_riff_audio['bits_per_sample'];
                 }
                 $thisfile_audio['sample_rate'] = $thisfile_riff_audio['sample_rate'];
                 if ($thisfile_audio['sample_rate'] == 0) {
                     $info['error'][] = 'Corrupted AIFF file: sample_rate == zero';
                     return false;
                 }
                 $info['playtime_seconds'] = $thisfile_riff_audio['total_samples'] / $thisfile_audio['sample_rate'];
             }
             if (isset($thisfile_riff[$RIFFsubtype]['COMT'])) {
                 $offset = 0;
                 $CommentCount = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), false);
                 $offset += 2;
                 for ($i = 0; $i < $CommentCount; ++$i) {
                     $info['comments_raw'][$i]['timestamp'] = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 4), false);
                     $offset += 4;
                     $info['comments_raw'][$i]['marker_id'] = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), true);
                     $offset += 2;
                     $CommentLength = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, 2), false);
                     $offset += 2;
                     $info['comments_raw'][$i]['comment'] = substr($thisfile_riff[$RIFFsubtype]['COMT'][0]['data'], $offset, $CommentLength);
                     $offset += $CommentLength;
                     $info['comments_raw'][$i]['timestamp_unix'] = Helper::DateMac2Unix($info['comments_raw'][$i]['timestamp']);
                     $thisfile_riff['comments']['comment'][] = $info['comments_raw'][$i]['comment'];
                 }
             }
             $CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment');
             foreach ($CommentsChunkNames as $key => $value) {
                 if (isset($thisfile_riff[$RIFFsubtype][$key][0]['data'])) {
                     $thisfile_riff['comments'][$value][] = $thisfile_riff[$RIFFsubtype][$key][0]['data'];
                 }
             }
             break;
         case '8SVX':
             $thisfile_audio['bitrate_mode'] = 'cbr';
             $thisfile_audio_dataformat = '8svx';
             $thisfile_audio['bits_per_sample'] = 8;
             $thisfile_audio['channels'] = 1;
             // overridden below, if need be
             $info['mime_type'] = 'audio/x-aiff';
             if (isset($thisfile_riff[$RIFFsubtype]['BODY'][0]['offset'])) {
                 $info['avdataoffset'] = $thisfile_riff[$RIFFsubtype]['BODY'][0]['offset'] + 8;
                 $info['avdataend'] = $info['avdataoffset'] + $thisfile_riff[$RIFFsubtype]['BODY'][0]['size'];
                 if ($info['avdataend'] > $info['filesize']) {
                     $info['warning'][] = 'Probable truncated AIFF file: expecting ' . $thisfile_riff[$RIFFsubtype]['BODY'][0]['size'] . ' bytes of audio data, only ' . ($info['filesize'] - $info['avdataoffset']) . ' bytes found';
                 }
             }
             if (isset($thisfile_riff[$RIFFsubtype]['VHDR'][0]['offset'])) {
                 // shortcut
                 $thisfile_riff_RIFFsubtype_VHDR_0 =& $thisfile_riff[$RIFFsubtype]['VHDR'][0];
                 $thisfile_riff_RIFFsubtype_VHDR_0['oneShotHiSamples'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 0, 4));
                 $thisfile_riff_RIFFsubtype_VHDR_0['repeatHiSamples'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 4, 4));
                 $thisfile_riff_RIFFsubtype_VHDR_0['samplesPerHiCycle'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 8, 4));
                 $thisfile_riff_RIFFsubtype_VHDR_0['samplesPerSec'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 12, 2));
                 $thisfile_riff_RIFFsubtype_VHDR_0['ctOctave'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 14, 1));
                 $thisfile_riff_RIFFsubtype_VHDR_0['sCompression'] = Helper::BigEndian2Int(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 15, 1));
                 $thisfile_riff_RIFFsubtype_VHDR_0['Volume'] = Helper::FixedPoint16_16(substr($thisfile_riff_RIFFsubtype_VHDR_0['data'], 16, 4));
                 $thisfile_audio['sample_rate'] = $thisfile_riff_RIFFsubtype_VHDR_0['samplesPerSec'];
                 switch ($thisfile_riff_RIFFsubtype_VHDR_0['sCompression']) {
                     case 0:
                         $thisfile_audio['codec'] = 'Pulse Code Modulation (PCM)';
                         $thisfile_audio['lossless'] = true;
                         $ActualBitsPerSample = 8;
                         break;
                     case 1:
                         $thisfile_audio['codec'] = 'Fibonacci-delta encoding';
                         $thisfile_audio['lossless'] = false;
                         $ActualBitsPerSample = 4;
                         break;
                     default:
                         $info['warning'][] = 'Unexpected sCompression value in 8SVX.VHDR chunk - expecting 0 or 1, found "' . sCompression . '"';
                         break;
                 }
             }
             if (isset($thisfile_riff[$RIFFsubtype]['CHAN'][0]['data'])) {
                 $ChannelsIndex = Helper::BigEndian2Int(substr($thisfile_riff[$RIFFsubtype]['CHAN'][0]['data'], 0, 4));
                 switch ($ChannelsIndex) {
                     case 6:
                         // Stereo
                         $thisfile_audio['channels'] = 2;
                         break;
                     case 2:
                         // Left channel only
                     // Left channel only
                     case 4:
                         // Right channel only
                         $thisfile_audio['channels'] = 1;
                         break;
                     default:
                         $info['warning'][] = 'Unexpected value in 8SVX.CHAN chunk - expecting 2 or 4 or 6, found "' . $ChannelsIndex . '"';
                         break;
                 }
             }
             $CommentsChunkNames = array('NAME' => 'title', 'author' => 'artist', '(c) ' => 'copyright', 'ANNO' => 'comment');
             foreach ($CommentsChunkNames as $key => $value) {
                 if (isset($thisfile_riff[$RIFFsubtype][$key][0]['data'])) {
                     $thisfile_riff['comments'][$value][] = $thisfile_riff[$RIFFsubtype][$key][0]['data'];
                 }
             }
             $thisfile_audio['bitrate'] = $thisfile_audio['sample_rate'] * $ActualBitsPerSample * $thisfile_audio['channels'];
             if (!empty($thisfile_audio['bitrate'])) {
                 $info['playtime_seconds'] = ($info['avdataend'] - $info['avdataoffset']) / ($thisfile_audio['bitrate'] / 8);
             }
             break;
         case 'CDXA':
             $info['mime_type'] = 'video/mpeg';
             if (!empty($thisfile_riff['CDXA']['data'][0]['size'])) {
                 if (class_exists('GetId3\\Module\\AudioVideo\\Mpeg')) {
                     $getid3_temp = new GetId3Core();
                     $getid3_temp->openfile($this->getid3->filename);
                     $getid3_mpeg = new Mpeg($getid3_temp);
                     $getid3_mpeg->analyze();
                     if (empty($getid3_temp->info['error'])) {
                         $info['audio'] = $getid3_temp->info['audio'];
                         $info['video'] = $getid3_temp->info['video'];
                         $info['mpeg'] = $getid3_temp->info['mpeg'];
                         $info['warning'] = $getid3_temp->info['warning'];
                     }
                     unset($getid3_temp, $getid3_mpeg);
                 }
             }
             break;
         default:
             $info['error'][] = 'Unknown RIFF type: expecting one of (WAVE|RMP3|AVI |CDDA|AIFF|AIFC|8SVX|CDXA), found "' . $RIFFsubtype . '" instead';
             unset($info['fileformat']);
             break;
     }
     switch ($RIFFsubtype) {
         case 'WAVE':
         case 'AIFF':
         case 'AIFC':
             if (isset($thisfile_riff[$RIFFsubtype]['ID3 ']) && !array_key_exists('id3 ', $thisfile_riff[$RIFFsubtype])) {
                 $info['warning'][] = 'mapping "ID3 " chunk to "id3 "';
             }
             if (isset($thisfile_riff[$RIFFsubtype]['tag ']) && !array_key_exists('id3 ', $thisfile_riff[$RIFFsubtype])) {
                 $info['warning'][] = 'mapping "tag " chunk to "id3 "';
             }
             if (isset($thisfile_riff[$RIFFsubtype]['id3 '])) {
                 $getid3_temp = new GetId3Core();
                 $getid3_temp->openfile($this->getid3->filename);
                 $getid3_id3v2 = new Id3v2($getid3_temp);
                 $getid3_id3v2->StartingOffset = $thisfile_riff[$RIFFsubtype]['id3 '][0]['offset'] + 8;
                 if ($thisfile_riff[$RIFFsubtype]['id3 '][0]['valid'] = $getid3_id3v2->analyze()) {
                     $info['id3v2'] = $getid3_temp->info['id3v2'];
                 }
                 unset($getid3_temp, $getid3_id3v2);
             }
             break;
     }
     if (isset($thisfile_riff_raw['fmt ']['wFormatTag']) && $thisfile_riff_raw['fmt ']['wFormatTag'] == 1) {
         // http://www.mega-nerd.com/erikd/Blog/Windiots/dts.html
         fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
         $FirstFourBytes = fread($this->getid3->fp, 4);
         if (preg_match('/^\\xFF\\x1F\\x00\\xE8/s', $FirstFourBytes)) {
             // DTSWAV
             $thisfile_audio_dataformat = 'dts';
         } elseif (preg_match('/^\\x7F\\xFF\\x80\\x01/s', $FirstFourBytes)) {
             // DTS, but this probably shouldn't happen
             $thisfile_audio_dataformat = 'dts';
         }
     }
     if (isset($thisfile_riff_WAVE['DISP']) && is_array($thisfile_riff_WAVE['DISP'])) {
         $thisfile_riff['comments']['title'][] = trim(substr($thisfile_riff_WAVE['DISP'][count($thisfile_riff_WAVE['DISP']) - 1]['data'], 4));
     }
     if (isset($thisfile_riff_WAVE['INFO']) && is_array($thisfile_riff_WAVE['INFO'])) {
         $this->RIFFcommentsParse($thisfile_riff_WAVE['INFO'], $thisfile_riff['comments']);
     }
     if (isset($thisfile_riff['AVI ']['INFO']) && is_array($thisfile_riff['AVI ']['INFO'])) {
         $this->RIFFcommentsParse($thisfile_riff['AVI ']['INFO'], $thisfile_riff['comments']);
     }
     if (empty($thisfile_audio['encoder']) && !empty($info['mpeg']['audio']['LAME']['short_version'])) {
         $thisfile_audio['encoder'] = $info['mpeg']['audio']['LAME']['short_version'];
     }
     if (!isset($info['playtime_seconds'])) {
         $info['playtime_seconds'] = 0;
     }
     if (isset($thisfile_riff_raw['strh'][0]['dwLength']) && isset($thisfile_riff_raw['avih']['dwMicroSecPerFrame'])) {
         // needed for >2GB AVIs where 'avih' chunk only lists number of frames in that chunk, not entire movie
         $info['playtime_seconds'] = $thisfile_riff_raw['strh'][0]['dwLength'] * ($thisfile_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
     } elseif (isset($thisfile_riff_raw['avih']['dwTotalFrames']) && isset($thisfile_riff_raw['avih']['dwMicroSecPerFrame'])) {
         $info['playtime_seconds'] = $thisfile_riff_raw['avih']['dwTotalFrames'] * ($thisfile_riff_raw['avih']['dwMicroSecPerFrame'] / 1000000);
     }
     if ($info['playtime_seconds'] > 0) {
         if (isset($thisfile_riff_audio) && isset($thisfile_riff_video)) {
             if (!isset($info['bitrate'])) {
                 $info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
             }
         } elseif (isset($thisfile_riff_audio) && !isset($thisfile_riff_video)) {
             if (!isset($thisfile_audio['bitrate'])) {
                 $thisfile_audio['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
             }
         } elseif (!isset($thisfile_riff_audio) && isset($thisfile_riff_video)) {
             if (!isset($thisfile_video['bitrate'])) {
                 $thisfile_video['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
             }
         }
     }
     if (isset($thisfile_riff_video) && isset($thisfile_audio['bitrate']) && $thisfile_audio['bitrate'] > 0 && $info['playtime_seconds'] > 0) {
         $info['bitrate'] = ($info['avdataend'] - $info['avdataoffset']) / $info['playtime_seconds'] * 8;
         $thisfile_audio['bitrate'] = 0;
         $thisfile_video['bitrate'] = $info['bitrate'];
         foreach ($thisfile_riff_audio as $channelnumber => $audioinfoarray) {
             $thisfile_video['bitrate'] -= $audioinfoarray['bitrate'];
             $thisfile_audio['bitrate'] += $audioinfoarray['bitrate'];
         }
         if ($thisfile_video['bitrate'] <= 0) {
             unset($thisfile_video['bitrate']);
         }
         if ($thisfile_audio['bitrate'] <= 0) {
             unset($thisfile_audio['bitrate']);
         }
     }
     if (isset($info['mpeg']['audio'])) {
         $thisfile_audio_dataformat = 'mp' . $info['mpeg']['audio']['layer'];
         $thisfile_audio['sample_rate'] = $info['mpeg']['audio']['sample_rate'];
         $thisfile_audio['channels'] = $info['mpeg']['audio']['channels'];
         $thisfile_audio['bitrate'] = $info['mpeg']['audio']['bitrate'];
         $thisfile_audio['bitrate_mode'] = strtolower($info['mpeg']['audio']['bitrate_mode']);
         if (!empty($info['mpeg']['audio']['codec'])) {
             $thisfile_audio['codec'] = $info['mpeg']['audio']['codec'] . ' ' . $thisfile_audio['codec'];
         }
         if (!empty($thisfile_audio['streams'])) {
             foreach ($thisfile_audio['streams'] as $streamnumber => $streamdata) {
                 if ($streamdata['dataformat'] == $thisfile_audio_dataformat) {
                     $thisfile_audio['streams'][$streamnumber]['sample_rate'] = $thisfile_audio['sample_rate'];
                     $thisfile_audio['streams'][$streamnumber]['channels'] = $thisfile_audio['channels'];
                     $thisfile_audio['streams'][$streamnumber]['bitrate'] = $thisfile_audio['bitrate'];
                     $thisfile_audio['streams'][$streamnumber]['bitrate_mode'] = $thisfile_audio['bitrate_mode'];
                     $thisfile_audio['streams'][$streamnumber]['codec'] = $thisfile_audio['codec'];
                 }
             }
         }
         $getid3_mp3 = new Mp3($this->getid3);
         $thisfile_audio['encoder_options'] = $getid3_mp3->GuessEncoderOptions();
         unset($getid3_mp3);
     }
     if (!empty($thisfile_riff_raw['fmt ']['wBitsPerSample']) && $thisfile_riff_raw['fmt ']['wBitsPerSample'] > 0) {
         switch ($thisfile_audio_dataformat) {
             case 'ac3':
                 // ignore bits_per_sample
                 break;
             default:
                 $thisfile_audio['bits_per_sample'] = $thisfile_riff_raw['fmt ']['wBitsPerSample'];
                 break;
         }
     }
     if (empty($thisfile_riff_raw)) {
         unset($thisfile_riff['raw']);
     }
     if (empty($thisfile_riff_audio)) {
         unset($thisfile_riff['audio']);
     }
     if (empty($thisfile_riff_video)) {
         unset($thisfile_riff['video']);
     }
     return true;
 }
示例#2
0
 /**
  * @staticvar type $MPEGaudioVersionLookup
  * @staticvar type $MPEGaudioLayerLookup
  * @staticvar type $MPEGaudioBitrateLookup
  * @staticvar type $MPEGaudioFrequencyLookup
  * @staticvar type $MPEGaudioChannelModeLookup
  * @staticvar type $MPEGaudioModeExtensionLookup
  * @staticvar type $MPEGaudioEmphasisLookup
  * @staticvar array $MPEGaudioHeaderDecodeCache
  * @staticvar array $MPEGaudioHeaderValidCache
  *
  * @param  type    $offset
  * @param  type    $info
  * @param  type    $recursivesearch
  * @param  type    $ScanAsCBR
  * @param  type    $FastMPEGheaderScan
  *
  * @return bool
  */
 public function decodeMPEGaudioHeader($offset, &$info, $recursivesearch = true, $ScanAsCBR = false, $FastMPEGheaderScan = false)
 {
     static $MPEGaudioVersionLookup;
     static $MPEGaudioLayerLookup;
     static $MPEGaudioBitrateLookup;
     static $MPEGaudioFrequencyLookup;
     static $MPEGaudioChannelModeLookup;
     static $MPEGaudioModeExtensionLookup;
     static $MPEGaudioEmphasisLookup;
     if (empty($MPEGaudioVersionLookup)) {
         $MPEGaudioVersionLookup = self::MPEGaudioVersionArray();
         $MPEGaudioLayerLookup = self::MPEGaudioLayerArray();
         $MPEGaudioBitrateLookup = self::MPEGaudioBitrateArray();
         $MPEGaudioFrequencyLookup = self::MPEGaudioFrequencyArray();
         $MPEGaudioChannelModeLookup = self::MPEGaudioChannelModeArray();
         $MPEGaudioModeExtensionLookup = self::MPEGaudioModeExtensionArray();
         $MPEGaudioEmphasisLookup = self::MPEGaudioEmphasisArray();
     }
     if (fseek($this->getGetId3()->fp, $offset, SEEK_SET) != 0) {
         $info['error'][] = 'decodeMPEGaudioHeader() failed to seek to next offset at ' . $offset;
         return false;
     }
     //$headerstring = fread($this->getGetId3()->fp, 1441); // worst-case max length = 32kHz @ 320kbps layer 3 = 1441 bytes/frame
     $headerstring = fread($this->getGetId3()->fp, 226);
     // LAME header at offset 36 + 190 bytes of Xing/LAME data
     // MP3 audio frame structure:
     // $aa $aa $aa $aa [$bb $bb] $cc...
     // where $aa..$aa is the four-byte mpeg-audio header (below)
     // $bb $bb is the optional 2-byte CRC
     // and $cc... is the audio data
     $head4 = substr($headerstring, 0, 4);
     static $MPEGaudioHeaderDecodeCache = array();
     if (isset($MPEGaudioHeaderDecodeCache[$head4])) {
         $MPEGheaderRawArray = $MPEGaudioHeaderDecodeCache[$head4];
     } else {
         $MPEGheaderRawArray = self::MPEGaudioHeaderDecode($head4);
         $MPEGaudioHeaderDecodeCache[$head4] = $MPEGheaderRawArray;
     }
     static $MPEGaudioHeaderValidCache = array();
     if (!isset($MPEGaudioHeaderValidCache[$head4])) {
         // Not in cache
         //$MPEGaudioHeaderValidCache[$head4] = self::MPEGaudioHeaderValid($MPEGheaderRawArray, false, true);  // allow badly-formatted freeformat (from LAME 3.90 - 3.93.1)
         $MPEGaudioHeaderValidCache[$head4] = self::MPEGaudioHeaderValid($MPEGheaderRawArray, false, false);
     }
     // shortcut
     if (!isset($info['mpeg']['audio'])) {
         $info['mpeg']['audio'] = array();
     }
     $thisfile_mpeg_audio =& $info['mpeg']['audio'];
     if ($MPEGaudioHeaderValidCache[$head4]) {
         $thisfile_mpeg_audio['raw'] = $MPEGheaderRawArray;
     } else {
         $info['error'][] = 'Invalid MPEG audio header (' . Helper::PrintHexBytes($head4) . ') at offset ' . $offset;
         return false;
     }
     if (!$FastMPEGheaderScan) {
         $thisfile_mpeg_audio['version'] = $MPEGaudioVersionLookup[$thisfile_mpeg_audio['raw']['version']];
         $thisfile_mpeg_audio['layer'] = $MPEGaudioLayerLookup[$thisfile_mpeg_audio['raw']['layer']];
         $thisfile_mpeg_audio['channelmode'] = $MPEGaudioChannelModeLookup[$thisfile_mpeg_audio['raw']['channelmode']];
         $thisfile_mpeg_audio['channels'] = $thisfile_mpeg_audio['channelmode'] == 'mono' ? 1 : 2;
         $thisfile_mpeg_audio['sample_rate'] = $MPEGaudioFrequencyLookup[$thisfile_mpeg_audio['version']][$thisfile_mpeg_audio['raw']['sample_rate']];
         $thisfile_mpeg_audio['protection'] = !$thisfile_mpeg_audio['raw']['protection'];
         $thisfile_mpeg_audio['private'] = (bool) $thisfile_mpeg_audio['raw']['private'];
         $thisfile_mpeg_audio['modeextension'] = $MPEGaudioModeExtensionLookup[$thisfile_mpeg_audio['layer']][$thisfile_mpeg_audio['raw']['modeextension']];
         $thisfile_mpeg_audio['copyright'] = (bool) $thisfile_mpeg_audio['raw']['copyright'];
         $thisfile_mpeg_audio['original'] = (bool) $thisfile_mpeg_audio['raw']['original'];
         $thisfile_mpeg_audio['emphasis'] = $MPEGaudioEmphasisLookup[$thisfile_mpeg_audio['raw']['emphasis']];
         $info['audio']['channels'] = $thisfile_mpeg_audio['channels'];
         $info['audio']['sample_rate'] = $thisfile_mpeg_audio['sample_rate'];
         if ($thisfile_mpeg_audio['protection']) {
             $thisfile_mpeg_audio['crc'] = Helper::BigEndian2Int(substr($headerstring, 4, 2));
         }
     }
     if ($thisfile_mpeg_audio['raw']['bitrate'] == 15) {
         // http://www.hydrogenaudio.org/?act=ST&f=16&t=9682&st=0
         $info['warning'][] = 'Invalid bitrate index (15), this is a known bug in free-format MP3s encoded by LAME v3.90 - 3.93.1';
         $thisfile_mpeg_audio['raw']['bitrate'] = 0;
     }
     $thisfile_mpeg_audio['padding'] = (bool) $thisfile_mpeg_audio['raw']['padding'];
     $thisfile_mpeg_audio['bitrate'] = $MPEGaudioBitrateLookup[$thisfile_mpeg_audio['version']][$thisfile_mpeg_audio['layer']][$thisfile_mpeg_audio['raw']['bitrate']];
     if ($thisfile_mpeg_audio['bitrate'] == 'free' && $offset == $info['avdataoffset']) {
         // only skip multiple frame check if free-format bitstream found at beginning of file
         // otherwise is quite possibly simply corrupted data
         $recursivesearch = false;
     }
     // For Layer 2 there are some combinations of bitrate and mode which are not allowed.
     if (!$FastMPEGheaderScan && $thisfile_mpeg_audio['layer'] == '2') {
         $info['audio']['dataformat'] = 'mp2';
         switch ($thisfile_mpeg_audio['channelmode']) {
             case 'mono':
                 if ($thisfile_mpeg_audio['bitrate'] == 'free' || $thisfile_mpeg_audio['bitrate'] <= 192000) {
                     // these are ok
                 } else {
                     $info['error'][] = $thisfile_mpeg_audio['bitrate'] . 'kbps not allowed in Layer 2, ' . $thisfile_mpeg_audio['channelmode'] . '.';
                     return false;
                 }
                 break;
             case 'stereo':
             case 'joint stereo':
             case 'dual channel':
                 if ($thisfile_mpeg_audio['bitrate'] == 'free' || $thisfile_mpeg_audio['bitrate'] == 64000 || $thisfile_mpeg_audio['bitrate'] >= 96000) {
                     // these are ok
                 } else {
                     $info['error'][] = intval(round($thisfile_mpeg_audio['bitrate'] / 1000)) . 'kbps not allowed in Layer 2, ' . $thisfile_mpeg_audio['channelmode'] . '.';
                     return false;
                 }
                 break;
         }
     }
     if ($info['audio']['sample_rate'] > 0) {
         $thisfile_mpeg_audio['framelength'] = self::MPEGaudioFrameLength($thisfile_mpeg_audio['bitrate'], $thisfile_mpeg_audio['version'], $thisfile_mpeg_audio['layer'], (int) $thisfile_mpeg_audio['padding'], $info['audio']['sample_rate']);
     }
     $nextframetestoffset = $offset + 1;
     if ($thisfile_mpeg_audio['bitrate'] != 'free') {
         $info['audio']['bitrate'] = $thisfile_mpeg_audio['bitrate'];
         if (isset($thisfile_mpeg_audio['framelength'])) {
             $nextframetestoffset = $offset + $thisfile_mpeg_audio['framelength'];
         } else {
             $info['error'][] = 'Frame at offset(' . $offset . ') is has an invalid frame length.';
             return false;
         }
     }
     $ExpectedNumberOfAudioBytes = 0;
     ////////////////////////////////////////////////////////////////////////////////////
     // Variable-bitrate headers
     if (substr($headerstring, 4 + 32, 4) == 'VBRI') {
         // Fraunhofer VBR header is hardcoded 'VBRI' at offset 0x24 (36)
         // specs taken from http://minnie.tuhs.org/pipermail/mp3encoder/2001-January/001800.html
         $thisfile_mpeg_audio['bitrate_mode'] = 'vbr';
         $thisfile_mpeg_audio['VBR_method'] = 'Fraunhofer';
         $info['audio']['codec'] = 'Fraunhofer';
         $SideInfoData = substr($headerstring, 4 + 2, 32);
         $FraunhoferVBROffset = 36;
         $thisfile_mpeg_audio['VBR_encoder_version'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 4, 2));
         // VbriVersion
         $thisfile_mpeg_audio['VBR_encoder_delay'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 6, 2));
         // VbriDelay
         $thisfile_mpeg_audio['VBR_quality'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 8, 2));
         // VbriQuality
         $thisfile_mpeg_audio['VBR_bytes'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 10, 4));
         // VbriStreamBytes
         $thisfile_mpeg_audio['VBR_frames'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 14, 4));
         // VbriStreamFrames
         $thisfile_mpeg_audio['VBR_seek_offsets'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 18, 2));
         // VbriTableSize
         $thisfile_mpeg_audio['VBR_seek_scale'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 20, 2));
         // VbriTableScale
         $thisfile_mpeg_audio['VBR_entry_bytes'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 22, 2));
         // VbriEntryBytes
         $thisfile_mpeg_audio['VBR_entry_frames'] = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset + 24, 2));
         // VbriEntryFrames
         $ExpectedNumberOfAudioBytes = $thisfile_mpeg_audio['VBR_bytes'];
         $previousbyteoffset = $offset;
         for ($i = 0; $i < $thisfile_mpeg_audio['VBR_seek_offsets']; ++$i) {
             $Fraunhofer_OffsetN = Helper::BigEndian2Int(substr($headerstring, $FraunhoferVBROffset, $thisfile_mpeg_audio['VBR_entry_bytes']));
             $FraunhoferVBROffset += $thisfile_mpeg_audio['VBR_entry_bytes'];
             $thisfile_mpeg_audio['VBR_offsets_relative'][$i] = $Fraunhofer_OffsetN * $thisfile_mpeg_audio['VBR_seek_scale'];
             $thisfile_mpeg_audio['VBR_offsets_absolute'][$i] = $Fraunhofer_OffsetN * $thisfile_mpeg_audio['VBR_seek_scale'] + $previousbyteoffset;
             $previousbyteoffset += $Fraunhofer_OffsetN;
         }
     } else {
         // Xing VBR header is hardcoded 'Xing' at a offset 0x0D (13), 0x15 (21) or 0x24 (36)
         // depending on MPEG layer and number of channels
         $VBRidOffset = self::XingVBRidOffset($thisfile_mpeg_audio['version'], $thisfile_mpeg_audio['channelmode']);
         $SideInfoData = substr($headerstring, 4 + 2, $VBRidOffset - 4);
         if (substr($headerstring, $VBRidOffset, strlen('Xing')) == 'Xing' || substr($headerstring, $VBRidOffset, strlen('Info')) == 'Info') {
             // 'Xing' is traditional Xing VBR frame
             // 'Info' is LAME-encoded CBR (This was done to avoid CBR files to be recognized as traditional Xing VBR files by some decoders.)
             // 'Info' *can* legally be used to specify a VBR file as well, however.
             // http://www.multiweb.cz/twoinches/MP3inside.htm
             //00..03 = "Xing" or "Info"
             //04..07 = Flags:
             //  0x01  Frames Flag     set if value for number of frames in file is stored
             //  0x02  Bytes Flag      set if value for filesize in bytes is stored
             //  0x04  TOC Flag        set if values for TOC are stored
             //  0x08  VBR Scale Flag  set if values for VBR scale is stored
             //08..11  Frames: Number of frames in file (including the first Xing/Info one)
             //12..15  Bytes:  File length in Bytes
             //16..115  TOC (Table of Contents):
             //  Contains of 100 indexes (one Byte length) for easier lookup in file. Approximately solves problem with moving inside file.
             //  Each Byte has a value according this formula:
             //  (TOC[i] / 256) * fileLenInBytes
             //  So if song lasts eg. 240 sec. and you want to jump to 60. sec. (and file is 5 000 000 Bytes length) you can use:
             //  TOC[(60/240)*100] = TOC[25]
             //  and corresponding Byte in file is then approximately at:
             //  (TOC[25]/256) * 5000000
             //116..119  VBR Scale
             // should be safe to leave this at 'vbr' and let it be overriden to 'cbr' if a CBR preset/mode is used by LAME
             //				if (substr($headerstring, $VBRidOffset, strlen('Info')) == 'Xing') {
             $thisfile_mpeg_audio['bitrate_mode'] = 'vbr';
             $thisfile_mpeg_audio['VBR_method'] = 'Xing';
             //				} else {
             //					$ScanAsCBR = true;
             //					$thisfile_mpeg_audio['bitrate_mode'] = 'cbr';
             //				}
             $thisfile_mpeg_audio['xing_flags_raw'] = Helper::BigEndian2Int(substr($headerstring, $VBRidOffset + 4, 4));
             $thisfile_mpeg_audio['xing_flags']['frames'] = (bool) ($thisfile_mpeg_audio['xing_flags_raw'] & 0x1);
             $thisfile_mpeg_audio['xing_flags']['bytes'] = (bool) ($thisfile_mpeg_audio['xing_flags_raw'] & 0x2);
             $thisfile_mpeg_audio['xing_flags']['toc'] = (bool) ($thisfile_mpeg_audio['xing_flags_raw'] & 0x4);
             $thisfile_mpeg_audio['xing_flags']['vbr_scale'] = (bool) ($thisfile_mpeg_audio['xing_flags_raw'] & 0x8);
             if ($thisfile_mpeg_audio['xing_flags']['frames']) {
                 $thisfile_mpeg_audio['VBR_frames'] = Helper::BigEndian2Int(substr($headerstring, $VBRidOffset + 8, 4));
                 //$thisfile_mpeg_audio['VBR_frames']--; // don't count header Xing/Info frame
             }
             if ($thisfile_mpeg_audio['xing_flags']['bytes']) {
                 $thisfile_mpeg_audio['VBR_bytes'] = Helper::BigEndian2Int(substr($headerstring, $VBRidOffset + 12, 4));
             }
             //if (($thisfile_mpeg_audio['bitrate'] == 'free') && !empty($thisfile_mpeg_audio['VBR_frames']) && !empty($thisfile_mpeg_audio['VBR_bytes'])) {
             if (!empty($thisfile_mpeg_audio['VBR_frames']) && !empty($thisfile_mpeg_audio['VBR_bytes'])) {
                 $framelengthfloat = $thisfile_mpeg_audio['VBR_bytes'] / $thisfile_mpeg_audio['VBR_frames'];
                 if ($thisfile_mpeg_audio['layer'] == '1') {
                     // BitRate = (((FrameLengthInBytes / 4) - Padding) * SampleRate) / 12
                     //$info['audio']['bitrate'] = ((($framelengthfloat / 4) - intval($thisfile_mpeg_audio['padding'])) * $thisfile_mpeg_audio['sample_rate']) / 12;
                     $info['audio']['bitrate'] = $framelengthfloat / 4 * $thisfile_mpeg_audio['sample_rate'] * (2 / $info['audio']['channels']) / 12;
                 } else {
                     // Bitrate = ((FrameLengthInBytes - Padding) * SampleRate) / 144
                     //$info['audio']['bitrate'] = (($framelengthfloat - intval($thisfile_mpeg_audio['padding'])) * $thisfile_mpeg_audio['sample_rate']) / 144;
                     $info['audio']['bitrate'] = $framelengthfloat * $thisfile_mpeg_audio['sample_rate'] * (2 / $info['audio']['channels']) / 144;
                 }
                 $thisfile_mpeg_audio['framelength'] = floor($framelengthfloat);
             }
             if ($thisfile_mpeg_audio['xing_flags']['toc']) {
                 $LAMEtocData = substr($headerstring, $VBRidOffset + 16, 100);
                 for ($i = 0; $i < 100; ++$i) {
                     $thisfile_mpeg_audio['toc'][$i] = ord($LAMEtocData[$i]);
                 }
             }
             if ($thisfile_mpeg_audio['xing_flags']['vbr_scale']) {
                 $thisfile_mpeg_audio['VBR_scale'] = Helper::BigEndian2Int(substr($headerstring, $VBRidOffset + 116, 4));
             }
             // http://gabriel.mp3-tech.org/mp3infotag.html
             if (substr($headerstring, $VBRidOffset + 120, 4) == 'LAME') {
                 // shortcut
                 $thisfile_mpeg_audio['LAME'] = array();
                 $thisfile_mpeg_audio_lame =& $thisfile_mpeg_audio['LAME'];
                 $thisfile_mpeg_audio_lame['long_version'] = substr($headerstring, $VBRidOffset + 120, 20);
                 $thisfile_mpeg_audio_lame['short_version'] = substr($thisfile_mpeg_audio_lame['long_version'], 0, 9);
                 if ($thisfile_mpeg_audio_lame['short_version'] >= 'LAME3.90') {
                     // extra 11 chars are not part of version string when LAMEtag present
                     unset($thisfile_mpeg_audio_lame['long_version']);
                     // It the LAME tag was only introduced in LAME v3.90
                     // http://www.hydrogenaudio.org/?act=ST&f=15&t=9933
                     // Offsets of various bytes in http://gabriel.mp3-tech.org/mp3infotag.html
                     // are assuming a 'Xing' identifier offset of 0x24, which is the case for
                     // MPEG-1 non-mono, but not for other combinations
                     $LAMEtagOffsetContant = $VBRidOffset - 0x24;
                     // shortcuts
                     $thisfile_mpeg_audio_lame['RGAD'] = array('track' => array(), 'album' => array());
                     $thisfile_mpeg_audio_lame_RGAD =& $thisfile_mpeg_audio_lame['RGAD'];
                     $thisfile_mpeg_audio_lame_RGAD_track =& $thisfile_mpeg_audio_lame_RGAD['track'];
                     $thisfile_mpeg_audio_lame_RGAD_album =& $thisfile_mpeg_audio_lame_RGAD['album'];
                     $thisfile_mpeg_audio_lame['raw'] = array();
                     $thisfile_mpeg_audio_lame_raw =& $thisfile_mpeg_audio_lame['raw'];
                     // byte $9B  VBR Quality
                     // This field is there to indicate a quality level, although the scale was not precised in the original Xing specifications.
                     // Actually overwrites original Xing bytes
                     unset($thisfile_mpeg_audio['VBR_scale']);
                     $thisfile_mpeg_audio_lame['vbr_quality'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0x9b, 1));
                     // bytes $9C-$A4  Encoder short VersionString
                     $thisfile_mpeg_audio_lame['short_version'] = substr($headerstring, $LAMEtagOffsetContant + 0x9c, 9);
                     // byte $A5  Info Tag revision + VBR method
                     $LAMEtagRevisionVBRmethod = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xa5, 1));
                     $thisfile_mpeg_audio_lame['tag_revision'] = ($LAMEtagRevisionVBRmethod & 0xf0) >> 4;
                     $thisfile_mpeg_audio_lame_raw['vbr_method'] = $LAMEtagRevisionVBRmethod & 0xf;
                     $thisfile_mpeg_audio_lame['vbr_method'] = self::LAMEvbrMethodLookup($thisfile_mpeg_audio_lame_raw['vbr_method']);
                     $thisfile_mpeg_audio['bitrate_mode'] = substr($thisfile_mpeg_audio_lame['vbr_method'], 0, 3);
                     // usually either 'cbr' or 'vbr', but truncates 'vbr-old / vbr-rh' to 'vbr'
                     // byte $A6  Lowpass filter value
                     $thisfile_mpeg_audio_lame['lowpass_frequency'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xa6, 1)) * 100;
                     // bytes $A7-$AE  Replay Gain
                     // http://privatewww.essex.ac.uk/~djmrob/replaygain/rg_data_format.html
                     // bytes $A7-$AA : 32 bit floating point "Peak signal amplitude"
                     if ($thisfile_mpeg_audio_lame['short_version'] >= 'LAME3.94b') {
                         // LAME 3.94a16 and later - 9.23 fixed point
                         // ie 0x0059E2EE / (2^23) = 5890798 / 8388608 = 0.7022378444671630859375
                         $thisfile_mpeg_audio_lame_RGAD['peak_amplitude'] = (double) (Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xa7, 4)) / 8388608);
                     } else {
                         // LAME 3.94a15 and earlier - 32-bit floating point
                         // Actually 3.94a16 will fall in here too and be WRONG, but is hard to detect 3.94a16 vs 3.94a15
                         $thisfile_mpeg_audio_lame_RGAD['peak_amplitude'] = Helper::LittleEndian2Float(substr($headerstring, $LAMEtagOffsetContant + 0xa7, 4));
                     }
                     if ($thisfile_mpeg_audio_lame_RGAD['peak_amplitude'] == 0) {
                         unset($thisfile_mpeg_audio_lame_RGAD['peak_amplitude']);
                     } else {
                         $thisfile_mpeg_audio_lame_RGAD['peak_db'] = Helper::RGADamplitude2dB($thisfile_mpeg_audio_lame_RGAD['peak_amplitude']);
                     }
                     $thisfile_mpeg_audio_lame_raw['RGAD_track'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xab, 2));
                     $thisfile_mpeg_audio_lame_raw['RGAD_album'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xad, 2));
                     if ($thisfile_mpeg_audio_lame_raw['RGAD_track'] != 0) {
                         $thisfile_mpeg_audio_lame_RGAD_track['raw']['name'] = ($thisfile_mpeg_audio_lame_raw['RGAD_track'] & 0xe000) >> 13;
                         $thisfile_mpeg_audio_lame_RGAD_track['raw']['originator'] = ($thisfile_mpeg_audio_lame_raw['RGAD_track'] & 0x1c00) >> 10;
                         $thisfile_mpeg_audio_lame_RGAD_track['raw']['sign_bit'] = ($thisfile_mpeg_audio_lame_raw['RGAD_track'] & 0x200) >> 9;
                         $thisfile_mpeg_audio_lame_RGAD_track['raw']['gain_adjust'] = $thisfile_mpeg_audio_lame_raw['RGAD_track'] & 0x1ff;
                         $thisfile_mpeg_audio_lame_RGAD_track['name'] = Helper::RGADnameLookup($thisfile_mpeg_audio_lame_RGAD_track['raw']['name']);
                         $thisfile_mpeg_audio_lame_RGAD_track['originator'] = Helper::RGADoriginatorLookup($thisfile_mpeg_audio_lame_RGAD_track['raw']['originator']);
                         $thisfile_mpeg_audio_lame_RGAD_track['gain_db'] = Helper::RGADadjustmentLookup($thisfile_mpeg_audio_lame_RGAD_track['raw']['gain_adjust'], $thisfile_mpeg_audio_lame_RGAD_track['raw']['sign_bit']);
                         if (!empty($thisfile_mpeg_audio_lame_RGAD['peak_amplitude'])) {
                             $info['replay_gain']['track']['peak'] = $thisfile_mpeg_audio_lame_RGAD['peak_amplitude'];
                         }
                         $info['replay_gain']['track']['originator'] = $thisfile_mpeg_audio_lame_RGAD_track['originator'];
                         $info['replay_gain']['track']['adjustment'] = $thisfile_mpeg_audio_lame_RGAD_track['gain_db'];
                     } else {
                         unset($thisfile_mpeg_audio_lame_RGAD['track']);
                     }
                     if ($thisfile_mpeg_audio_lame_raw['RGAD_album'] != 0) {
                         $thisfile_mpeg_audio_lame_RGAD_album['raw']['name'] = ($thisfile_mpeg_audio_lame_raw['RGAD_album'] & 0xe000) >> 13;
                         $thisfile_mpeg_audio_lame_RGAD_album['raw']['originator'] = ($thisfile_mpeg_audio_lame_raw['RGAD_album'] & 0x1c00) >> 10;
                         $thisfile_mpeg_audio_lame_RGAD_album['raw']['sign_bit'] = ($thisfile_mpeg_audio_lame_raw['RGAD_album'] & 0x200) >> 9;
                         $thisfile_mpeg_audio_lame_RGAD_album['raw']['gain_adjust'] = $thisfile_mpeg_audio_lame_raw['RGAD_album'] & 0x1ff;
                         $thisfile_mpeg_audio_lame_RGAD_album['name'] = Helper::RGADnameLookup($thisfile_mpeg_audio_lame_RGAD_album['raw']['name']);
                         $thisfile_mpeg_audio_lame_RGAD_album['originator'] = Helper::RGADoriginatorLookup($thisfile_mpeg_audio_lame_RGAD_album['raw']['originator']);
                         $thisfile_mpeg_audio_lame_RGAD_album['gain_db'] = Helper::RGADadjustmentLookup($thisfile_mpeg_audio_lame_RGAD_album['raw']['gain_adjust'], $thisfile_mpeg_audio_lame_RGAD_album['raw']['sign_bit']);
                         if (!empty($thisfile_mpeg_audio_lame_RGAD['peak_amplitude'])) {
                             $info['replay_gain']['album']['peak'] = $thisfile_mpeg_audio_lame_RGAD['peak_amplitude'];
                         }
                         $info['replay_gain']['album']['originator'] = $thisfile_mpeg_audio_lame_RGAD_album['originator'];
                         $info['replay_gain']['album']['adjustment'] = $thisfile_mpeg_audio_lame_RGAD_album['gain_db'];
                     } else {
                         unset($thisfile_mpeg_audio_lame_RGAD['album']);
                     }
                     if (empty($thisfile_mpeg_audio_lame_RGAD)) {
                         unset($thisfile_mpeg_audio_lame['RGAD']);
                     }
                     // byte $AF  Encoding flags + ATH Type
                     $EncodingFlagsATHtype = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xaf, 1));
                     $thisfile_mpeg_audio_lame['encoding_flags']['nspsytune'] = (bool) ($EncodingFlagsATHtype & 0x10);
                     $thisfile_mpeg_audio_lame['encoding_flags']['nssafejoint'] = (bool) ($EncodingFlagsATHtype & 0x20);
                     $thisfile_mpeg_audio_lame['encoding_flags']['nogap_next'] = (bool) ($EncodingFlagsATHtype & 0x40);
                     $thisfile_mpeg_audio_lame['encoding_flags']['nogap_prev'] = (bool) ($EncodingFlagsATHtype & 0x80);
                     $thisfile_mpeg_audio_lame['ath_type'] = $EncodingFlagsATHtype & 0xf;
                     // byte $B0  if ABR {specified bitrate} else {minimal bitrate}
                     $thisfile_mpeg_audio_lame['raw']['abrbitrate_minbitrate'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb0, 1));
                     if ($thisfile_mpeg_audio_lame_raw['vbr_method'] == 2) {
                         // Average BitRate (ABR)
                         $thisfile_mpeg_audio_lame['bitrate_abr'] = $thisfile_mpeg_audio_lame['raw']['abrbitrate_minbitrate'];
                     } elseif ($thisfile_mpeg_audio_lame_raw['vbr_method'] == 1) {
                         // Constant BitRate (CBR)
                         // ignore
                     } elseif ($thisfile_mpeg_audio_lame['raw']['abrbitrate_minbitrate'] > 0) {
                         // Variable BitRate (VBR) - minimum bitrate
                         $thisfile_mpeg_audio_lame['bitrate_min'] = $thisfile_mpeg_audio_lame['raw']['abrbitrate_minbitrate'];
                     }
                     // bytes $B1-$B3  Encoder delays
                     $EncoderDelays = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb1, 3));
                     $thisfile_mpeg_audio_lame['encoder_delay'] = ($EncoderDelays & 0xfff000) >> 12;
                     $thisfile_mpeg_audio_lame['end_padding'] = $EncoderDelays & 0xfff;
                     // byte $B4  Misc
                     $MiscByte = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb4, 1));
                     $thisfile_mpeg_audio_lame_raw['noise_shaping'] = $MiscByte & 0x3;
                     $thisfile_mpeg_audio_lame_raw['stereo_mode'] = ($MiscByte & 0x1c) >> 2;
                     $thisfile_mpeg_audio_lame_raw['not_optimal_quality'] = ($MiscByte & 0x20) >> 5;
                     $thisfile_mpeg_audio_lame_raw['source_sample_freq'] = ($MiscByte & 0xc0) >> 6;
                     $thisfile_mpeg_audio_lame['noise_shaping'] = $thisfile_mpeg_audio_lame_raw['noise_shaping'];
                     $thisfile_mpeg_audio_lame['stereo_mode'] = self::LAMEmiscStereoModeLookup($thisfile_mpeg_audio_lame_raw['stereo_mode']);
                     $thisfile_mpeg_audio_lame['not_optimal_quality'] = (bool) $thisfile_mpeg_audio_lame_raw['not_optimal_quality'];
                     $thisfile_mpeg_audio_lame['source_sample_freq'] = self::LAMEmiscSourceSampleFrequencyLookup($thisfile_mpeg_audio_lame_raw['source_sample_freq']);
                     // byte $B5  MP3 Gain
                     $thisfile_mpeg_audio_lame_raw['mp3_gain'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb5, 1), false, true);
                     $thisfile_mpeg_audio_lame['mp3_gain_db'] = Helper::RGADamplitude2dB(2) / 4 * $thisfile_mpeg_audio_lame_raw['mp3_gain'];
                     $thisfile_mpeg_audio_lame['mp3_gain_factor'] = pow(2, $thisfile_mpeg_audio_lame['mp3_gain_db'] / 6);
                     // bytes $B6-$B7  Preset and surround info
                     $PresetSurroundBytes = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb6, 2));
                     // Reserved                                                    = ($PresetSurroundBytes & 0xC000);
                     $thisfile_mpeg_audio_lame_raw['surround_info'] = $PresetSurroundBytes & 0x3800;
                     $thisfile_mpeg_audio_lame['surround_info'] = self::LAMEsurroundInfoLookup($thisfile_mpeg_audio_lame_raw['surround_info']);
                     $thisfile_mpeg_audio_lame['preset_used_id'] = $PresetSurroundBytes & 0x7ff;
                     $thisfile_mpeg_audio_lame['preset_used'] = self::LAMEpresetUsedLookup($thisfile_mpeg_audio_lame);
                     if (!empty($thisfile_mpeg_audio_lame['preset_used_id']) && empty($thisfile_mpeg_audio_lame['preset_used'])) {
                         $info['warning'][] = 'Unknown LAME preset used (' . $thisfile_mpeg_audio_lame['preset_used_id'] . ') - please report to info@getid3.org';
                     }
                     if ($thisfile_mpeg_audio_lame['short_version'] == 'LAME3.90.' && !empty($thisfile_mpeg_audio_lame['preset_used_id'])) {
                         // this may change if 3.90.4 ever comes out
                         $thisfile_mpeg_audio_lame['short_version'] = 'LAME3.90.3';
                     }
                     // bytes $B8-$BB  MusicLength
                     $thisfile_mpeg_audio_lame['audio_bytes'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xb8, 4));
                     $ExpectedNumberOfAudioBytes = $thisfile_mpeg_audio_lame['audio_bytes'] > 0 ? $thisfile_mpeg_audio_lame['audio_bytes'] : $thisfile_mpeg_audio['VBR_bytes'];
                     // bytes $BC-$BD  MusicCRC
                     $thisfile_mpeg_audio_lame['music_crc'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xbc, 2));
                     // bytes $BE-$BF  CRC-16 of Info Tag
                     $thisfile_mpeg_audio_lame['lame_tag_crc'] = Helper::BigEndian2Int(substr($headerstring, $LAMEtagOffsetContant + 0xbe, 2));
                     // LAME CBR
                     if ($thisfile_mpeg_audio_lame_raw['vbr_method'] == 1) {
                         $thisfile_mpeg_audio['bitrate_mode'] = 'cbr';
                         $thisfile_mpeg_audio['bitrate'] = self::ClosestStandardMP3Bitrate($thisfile_mpeg_audio['bitrate']);
                         $info['audio']['bitrate'] = $thisfile_mpeg_audio['bitrate'];
                         //if (empty($thisfile_mpeg_audio['bitrate']) || (!empty($thisfile_mpeg_audio_lame['bitrate_min']) && ($thisfile_mpeg_audio_lame['bitrate_min'] != 255))) {
                         //	$thisfile_mpeg_audio['bitrate'] = $thisfile_mpeg_audio_lame['bitrate_min'];
                         //}
                     }
                 }
             }
         } else {
             // not Fraunhofer or Xing VBR methods, most likely CBR (but could be VBR with no header)
             $thisfile_mpeg_audio['bitrate_mode'] = 'cbr';
             if ($recursivesearch) {
                 $thisfile_mpeg_audio['bitrate_mode'] = 'vbr';
                 if ($this->RecursiveFrameScanning($offset, $nextframetestoffset, true)) {
                     $recursivesearch = false;
                     $thisfile_mpeg_audio['bitrate_mode'] = 'cbr';
                 }
                 if ($thisfile_mpeg_audio['bitrate_mode'] == 'vbr') {
                     $info['warning'][] = 'VBR file with no VBR header. Bitrate values calculated from actual frame bitrates.';
                 }
             }
         }
     }
     if ($ExpectedNumberOfAudioBytes > 0 && $ExpectedNumberOfAudioBytes != $info['avdataend'] - $info['avdataoffset']) {
         if ($ExpectedNumberOfAudioBytes > $info['avdataend'] - $info['avdataoffset']) {
             if (isset($info['fileformat']) && $info['fileformat'] == 'riff') {
                 // ignore, audio data is broken into chunks so will always be data "missing"
             } elseif ($ExpectedNumberOfAudioBytes - ($info['avdataend'] - $info['avdataoffset']) == 1) {
                 $info['warning'][] = 'Last byte of data truncated (this is a known bug in Meracl ID3 Tag Writer before v1.3.5)';
             } else {
                 $info['warning'][] = 'Probable truncated file: expecting ' . $ExpectedNumberOfAudioBytes . ' bytes of audio data, only found ' . ($info['avdataend'] - $info['avdataoffset']) . ' (short by ' . ($ExpectedNumberOfAudioBytes - ($info['avdataend'] - $info['avdataoffset'])) . ' bytes)';
             }
         } else {
             if ($info['avdataend'] - $info['avdataoffset'] - $ExpectedNumberOfAudioBytes == 1) {
                 //	$prenullbytefileoffset = ftell($this->getid3->fp);
                 //	fseek($this->getid3->fp, $info['avdataend'], SEEK_SET);
                 //	$PossibleNullByte = fread($this->getid3->fp, 1);
                 //	fseek($this->getid3->fp, $prenullbytefileoffset, SEEK_SET);
                 //	if ($PossibleNullByte === "\x00") {
                 --$info['avdataend'];
                 //		$info['warning'][] = 'Extra null byte at end of MP3 data assumed to be RIFF padding and therefore ignored';
                 //	} else {
                 //		$info['warning'][] = 'Too much data in file: expecting '.$ExpectedNumberOfAudioBytes.' bytes of audio data, found '.($info['avdataend'] - $info['avdataoffset']).' ('.(($info['avdataend'] - $info['avdataoffset']) - $ExpectedNumberOfAudioBytes).' bytes too many)';
                 //	}
             } else {
                 $info['warning'][] = 'Too much data in file: expecting ' . $ExpectedNumberOfAudioBytes . ' bytes of audio data, found ' . ($info['avdataend'] - $info['avdataoffset']) . ' (' . ($info['avdataend'] - $info['avdataoffset'] - $ExpectedNumberOfAudioBytes) . ' bytes too many)';
             }
         }
     }
     if ($thisfile_mpeg_audio['bitrate'] == 'free' && empty($info['audio']['bitrate'])) {
         if ($offset == $info['avdataoffset'] && empty($thisfile_mpeg_audio['VBR_frames'])) {
             $framebytelength = $this->FreeFormatFrameLength($offset, true);
             if ($framebytelength > 0) {
                 $thisfile_mpeg_audio['framelength'] = $framebytelength;
                 if ($thisfile_mpeg_audio['layer'] == '1') {
                     // BitRate = (((FrameLengthInBytes / 4) - Padding) * SampleRate) / 12
                     $info['audio']['bitrate'] = ($framebytelength / 4 - intval($thisfile_mpeg_audio['padding'])) * $thisfile_mpeg_audio['sample_rate'] / 12;
                 } else {
                     // Bitrate = ((FrameLengthInBytes - Padding) * SampleRate) / 144
                     $info['audio']['bitrate'] = ($framebytelength - intval($thisfile_mpeg_audio['padding'])) * $thisfile_mpeg_audio['sample_rate'] / 144;
                 }
             } else {
                 $info['error'][] = 'Error calculating frame length of free-format MP3 without Xing/LAME header';
             }
         }
     }
     if (isset($thisfile_mpeg_audio['VBR_frames']) ? $thisfile_mpeg_audio['VBR_frames'] : '') {
         switch ($thisfile_mpeg_audio['bitrate_mode']) {
             case 'vbr':
             case 'abr':
                 $bytes_per_frame = 1152;
                 if ($thisfile_mpeg_audio['version'] == '1' && $thisfile_mpeg_audio['layer'] == 1) {
                     $bytes_per_frame = 384;
                 } elseif (($thisfile_mpeg_audio['version'] == '2' || $thisfile_mpeg_audio['version'] == '2.5') && $thisfile_mpeg_audio['layer'] == 3) {
                     $bytes_per_frame = 576;
                 }
                 $thisfile_mpeg_audio['VBR_bitrate'] = isset($thisfile_mpeg_audio['VBR_bytes']) ? $thisfile_mpeg_audio['VBR_bytes'] / $thisfile_mpeg_audio['VBR_frames'] * 8 * ($info['audio']['sample_rate'] / $bytes_per_frame) : 0;
                 if ($thisfile_mpeg_audio['VBR_bitrate'] > 0) {
                     $info['audio']['bitrate'] = $thisfile_mpeg_audio['VBR_bitrate'];
                     $thisfile_mpeg_audio['bitrate'] = $thisfile_mpeg_audio['VBR_bitrate'];
                     // to avoid confusion
                 }
                 break;
         }
     }
     // End variable-bitrate headers
     ////////////////////////////////////////////////////////////////////////////////////
     if ($recursivesearch) {
         if (!$this->RecursiveFrameScanning($offset, $nextframetestoffset, $ScanAsCBR)) {
             return false;
         }
     }
     //if (false) {
     //    // experimental side info parsing section - not returning anything useful yet
     //
     //    $SideInfoBitstream = GetId3_lib::BigEndian2Bin($SideInfoData);
     //    $SideInfoOffset = 0;
     //
     //    if ($thisfile_mpeg_audio['version'] == '1') {
     //        if ($thisfile_mpeg_audio['channelmode'] == 'mono') {
     //            // MPEG-1 (mono)
     //            $thisfile_mpeg_audio['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 9);
     //            $SideInfoOffset += 9;
     //            $SideInfoOffset += 5;
     //        } else {
     //            // MPEG-1 (stereo, joint-stereo, dual-channel)
     //            $thisfile_mpeg_audio['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 9);
     //            $SideInfoOffset += 9;
     //            $SideInfoOffset += 3;
     //        }
     //    } else { // 2 or 2.5
     //        if ($thisfile_mpeg_audio['channelmode'] == 'mono') {
     //            // MPEG-2, MPEG-2.5 (mono)
     //            $thisfile_mpeg_audio['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 8);
     //            $SideInfoOffset += 8;
     //            $SideInfoOffset += 1;
     //        } else {
     //            // MPEG-2, MPEG-2.5 (stereo, joint-stereo, dual-channel)
     //            $thisfile_mpeg_audio['side_info']['main_data_begin'] = substr($SideInfoBitstream, $SideInfoOffset, 8);
     //            $SideInfoOffset += 8;
     //            $SideInfoOffset += 2;
     //        }
     //    }
     //
     //    if ($thisfile_mpeg_audio['version'] == '1') {
     //        for ($channel = 0; $channel < $info['audio']['channels']; $channel++) {
     //            for ($scfsi_band = 0; $scfsi_band < 4; $scfsi_band++) {
     //                $thisfile_mpeg_audio['scfsi'][$channel][$scfsi_band] = substr($SideInfoBitstream, $SideInfoOffset, 1);
     //                $SideInfoOffset += 2;
     //            }
     //        }
     //    }
     //    for ($granule = 0; $granule < (($thisfile_mpeg_audio['version'] == '1') ? 2 : 1); $granule++) {
     //        for ($channel = 0; $channel < $info['audio']['channels']; $channel++) {
     //            $thisfile_mpeg_audio['part2_3_length'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 12);
     //            $SideInfoOffset += 12;
     //            $thisfile_mpeg_audio['big_values'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 9);
     //            $SideInfoOffset += 9;
     //            $thisfile_mpeg_audio['global_gain'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 8);
     //            $SideInfoOffset += 8;
     //            if ($thisfile_mpeg_audio['version'] == '1') {
     //                $thisfile_mpeg_audio['scalefac_compress'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 4);
     //                $SideInfoOffset += 4;
     //            } else {
     //                $thisfile_mpeg_audio['scalefac_compress'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 9);
     //                $SideInfoOffset += 9;
     //            }
     //            $thisfile_mpeg_audio['window_switching_flag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1);
     //            $SideInfoOffset += 1;
     //
     //            if ($thisfile_mpeg_audio['window_switching_flag'][$granule][$channel] == '1') {
     //
     //                $thisfile_mpeg_audio['block_type'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 2);
     //                $SideInfoOffset += 2;
     //                $thisfile_mpeg_audio['mixed_block_flag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1);
     //                $SideInfoOffset += 1;
     //
     //                for ($region = 0; $region < 2; $region++) {
     //                    $thisfile_mpeg_audio['table_select'][$granule][$channel][$region] = substr($SideInfoBitstream, $SideInfoOffset, 5);
     //                    $SideInfoOffset += 5;
     //                }
     //                $thisfile_mpeg_audio['table_select'][$granule][$channel][2] = 0;
     //
     //                for ($window = 0; $window < 3; $window++) {
     //                    $thisfile_mpeg_audio['subblock_gain'][$granule][$channel][$window] = substr($SideInfoBitstream, $SideInfoOffset, 3);
     //                    $SideInfoOffset += 3;
     //                }
     //
     //            } else {
     //
     //                for ($region = 0; $region < 3; $region++) {
     //                    $thisfile_mpeg_audio['table_select'][$granule][$channel][$region] = substr($SideInfoBitstream, $SideInfoOffset, 5);
     //                    $SideInfoOffset += 5;
     //                }
     //
     //                $thisfile_mpeg_audio['region0_count'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 4);
     //                $SideInfoOffset += 4;
     //                $thisfile_mpeg_audio['region1_count'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 3);
     //                $SideInfoOffset += 3;
     //                $thisfile_mpeg_audio['block_type'][$granule][$channel] = 0;
     //            }
     //
     //            if ($thisfile_mpeg_audio['version'] == '1') {
     //                $thisfile_mpeg_audio['preflag'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1);
     //                $SideInfoOffset += 1;
     //            }
     //            $thisfile_mpeg_audio['scalefac_scale'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1);
     //            $SideInfoOffset += 1;
     //            $thisfile_mpeg_audio['count1table_select'][$granule][$channel] = substr($SideInfoBitstream, $SideInfoOffset, 1);
     //            $SideInfoOffset += 1;
     //        }
     //    }
     //}
     return true;
 }
示例#3
0
 /**
  * @param  type    $parsedFrame
  *
  * @return bool
  */
 public function ParseID3v2Frame(&$parsedFrame)
 {
     // shortcuts
     $info =& $this->getid3->info;
     $id3v2_majorversion = $info['id3v2']['majorversion'];
     $parsedFrame['framenamelong'] = $this->FrameNameLongLookup($parsedFrame['frame_name']);
     if (empty($parsedFrame['framenamelong'])) {
         unset($parsedFrame['framenamelong']);
     }
     $parsedFrame['framenameshort'] = $this->FrameNameShortLookup($parsedFrame['frame_name']);
     if (empty($parsedFrame['framenameshort'])) {
         unset($parsedFrame['framenameshort']);
     }
     if ($id3v2_majorversion >= 3) {
         // frame flags are not part of the ID3v2.2 standard
         if ($id3v2_majorversion == 3) {
             //    Frame Header Flags
             //    %abc00000 %ijk00000
             $parsedFrame['flags']['TagAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x8000);
             // a - Tag alter preservation
             $parsedFrame['flags']['FileAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x4000);
             // b - File alter preservation
             $parsedFrame['flags']['ReadOnly'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x2000);
             // c - Read only
             $parsedFrame['flags']['compression'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x80);
             // i - Compression
             $parsedFrame['flags']['Encryption'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x40);
             // j - Encryption
             $parsedFrame['flags']['GroupingIdentity'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x20);
             // k - Grouping identity
         } elseif ($id3v2_majorversion == 4) {
             //    Frame Header Flags
             //    %0abc0000 %0h00kmnp
             $parsedFrame['flags']['TagAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x4000);
             // a - Tag alter preservation
             $parsedFrame['flags']['FileAlterPreservation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x2000);
             // b - File alter preservation
             $parsedFrame['flags']['ReadOnly'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x1000);
             // c - Read only
             $parsedFrame['flags']['GroupingIdentity'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x40);
             // h - Grouping identity
             $parsedFrame['flags']['compression'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x8);
             // k - Compression
             $parsedFrame['flags']['Encryption'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x4);
             // m - Encryption
             $parsedFrame['flags']['Unsynchronisation'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x2);
             // n - Unsynchronisation
             $parsedFrame['flags']['DataLengthIndicator'] = (bool) ($parsedFrame['frame_flags_raw'] & 0x1);
             // p - Data length indicator
             // Frame-level de-unsynchronisation - ID3v2.4
             if ($parsedFrame['flags']['Unsynchronisation']) {
                 $parsedFrame['data'] = $this->DeUnsynchronise($parsedFrame['data']);
             }
             if ($parsedFrame['flags']['DataLengthIndicator']) {
                 $parsedFrame['data_length_indicator'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 0, 4), 1);
                 $parsedFrame['data'] = substr($parsedFrame['data'], 4);
             }
         }
         //    Frame-level de-compression
         if ($parsedFrame['flags']['compression']) {
             $parsedFrame['decompressed_size'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 0, 4));
             if (!function_exists('gzuncompress')) {
                 $info['warning'][] = 'gzuncompress() support required to decompress ID3v2 frame "' . $parsedFrame['frame_name'] . '"';
             } else {
                 if ($decompresseddata = @gzuncompress(substr($parsedFrame['data'], 4))) {
                     //if ($decompresseddata = @gzuncompress($parsedFrame['data'])) {
                     $parsedFrame['data'] = $decompresseddata;
                     unset($decompresseddata);
                 } else {
                     $info['warning'][] = 'gzuncompress() failed on compressed contents of ID3v2 frame "' . $parsedFrame['frame_name'] . '"';
                 }
             }
         }
     }
     if (!empty($parsedFrame['flags']['DataLengthIndicator'])) {
         if ($parsedFrame['data_length_indicator'] != strlen($parsedFrame['data'])) {
             $info['warning'][] = 'ID3v2 frame "' . $parsedFrame['frame_name'] . '" should be ' . $parsedFrame['data_length_indicator'] . ' bytes long according to DataLengthIndicator, but found ' . strlen($parsedFrame['data']) . ' bytes of data';
         }
     }
     if (isset($parsedFrame['datalength']) && $parsedFrame['datalength'] == 0) {
         $warning = 'Frame "' . $parsedFrame['frame_name'] . '" at offset ' . $parsedFrame['dataoffset'] . ' has no data portion';
         switch ($parsedFrame['frame_name']) {
             case 'WCOM':
                 $warning .= ' (this is known to happen with files tagged by RioPort)';
                 break;
             default:
                 break;
         }
         $info['warning'][] = $warning;
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'UFID' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'UFI') {
         // 4.1   UFI  Unique file identifier
         //   There may be more than one 'UFID' frame in a tag,
         //   but only one with the same 'Owner identifier'.
         // <Header for 'Unique file identifier', ID: 'UFID'>
         // Owner identifier        <text string> $00
         // Identifier              <up to 64 bytes binary data>
         $exploded = explode("", $parsedFrame['data'], 2);
         $parsedFrame['ownerid'] = isset($exploded[0]) ? $exploded[0] : '';
         $parsedFrame['data'] = isset($exploded[1]) ? $exploded[1] : '';
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'TXXX' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'TXX') {
         // 4.2.2 TXX  User defined text information frame
         //   There may be more than one 'TXXX' frame in each tag,
         //   but only one with the same description.
         // <Header for 'User defined text information frame', ID: 'TXXX'>
         // Text encoding     $xx
         // Description       <text string according to encoding> $00 (00)
         // Value             <text string according to encoding>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_description) === 0) {
             $frame_description = '';
         }
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['description'] = $frame_description;
         $parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
         if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = trim(Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']));
         }
         //unset($parsedFrame['data']); do not unset, may be needed elsewhere, e.g. for replaygain
     } elseif ($parsedFrame['frame_name'][0] == 'T') {
         // 4.2. T??[?] Text information frame
         //   There may only be one text information frame of its kind in an tag.
         // <Header for 'Text information frame', ID: 'T000' - 'TZZZ',
         // excluding 'TXXX' described in 4.2.6.>
         // Text encoding                $xx
         // Information                  <text string(s) according to encoding>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
             $string = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
             $string = rtrim($string, "");
             // remove possible terminating null (put by encoding id or software bug)
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = $string;
             unset($string);
         }
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'WXXX' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'WXX') {
         // 4.3.2 WXX  User defined URL link frame
         //   There may be more than one 'WXXX' frame in each tag,
         //   but only one with the same description
         // <Header for 'User defined URL link frame', ID: 'WXXX'>
         // Text encoding     $xx
         // Description       <text string according to encoding> $00 (00)
         // URL               <text string>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_description) === 0) {
             $frame_description = '';
         }
         $parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding));
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         if ($frame_terminatorpos) {
             // there are null bytes after the data - this is not according to spec
             // only use data up to first null byte
             $frame_urldata = (string) substr($parsedFrame['data'], 0, $frame_terminatorpos);
         } else {
             // no null bytes following data, just use all data
             $frame_urldata = (string) $parsedFrame['data'];
         }
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['url'] = $frame_urldata;
         $parsedFrame['description'] = $frame_description;
         if (!empty($parsedFrame['framenameshort']) && $parsedFrame['url']) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['url']);
         }
         unset($parsedFrame['data']);
     } elseif ($parsedFrame['frame_name'][0] == 'W') {
         // 4.3. W??? URL link frames
         //   There may only be one URL link frame of its kind in a tag,
         //   except when stated otherwise in the frame description
         // <Header for 'URL link frame', ID: 'W000' - 'WZZZ', excluding 'WXXX'
         // described in 4.3.2.>
         // URL              <text string>
         $parsedFrame['url'] = trim($parsedFrame['data']);
         if (!empty($parsedFrame['framenameshort']) && $parsedFrame['url']) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = $parsedFrame['url'];
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion == 3 && $parsedFrame['frame_name'] == 'IPLS' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'IPL') {
         // 4.4  IPL  Involved people list (ID3v2.2 only)
         //   There may only be one 'IPL' frame in each tag
         // <Header for 'User defined URL link frame', ID: 'IPL'>
         // Text encoding     $xx
         // People list strings    <textstrings>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($parsedFrame['encodingid']);
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
         if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
         }
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'MCDI' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'MCI') {
         // 4.5   MCI  Music CD identifier
         //   There may only be one 'MCDI' frame in each tag
         // <Header for 'Music CD identifier', ID: 'MCDI'>
         // CD TOC                <binary data>
         if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = $parsedFrame['data'];
         }
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'ETCO' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'ETC') {
         // 4.6   ETC  Event timing codes
         //   There may only be one 'ETCO' frame in each tag
         // <Header for 'Event timing codes', ID: 'ETCO'>
         // Time stamp format    $xx
         //   Where time stamp format is:
         // $01  (32-bit value) MPEG frames from beginning of file
         // $02  (32-bit value) milliseconds from beginning of file
         //   Followed by a list of key events in the following format:
         // Type of event   $xx
         // Time stamp      $xx (xx ...)
         //   The 'Time stamp' is set to zero if directly at the beginning of the sound
         //   or after the previous event. All events MUST be sorted in chronological order.
         $frame_offset = 0;
         $parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         while ($frame_offset < strlen($parsedFrame['data'])) {
             $parsedFrame['typeid'] = substr($parsedFrame['data'], $frame_offset++, 1);
             $parsedFrame['type'] = $this->ETCOEventLookup($parsedFrame['typeid']);
             $parsedFrame['timestamp'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
             $frame_offset += 4;
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'MLLT' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'MLL') {
         // 4.7   MLL MPEG location lookup table
         //   There may only be one 'MLLT' frame in each tag
         // <Header for 'Location lookup table', ID: 'MLLT'>
         // MPEG frames between reference  $xx xx
         // Bytes between reference        $xx xx xx
         // Milliseconds between reference $xx xx xx
         // Bits for bytes deviation       $xx
         // Bits for milliseconds dev.     $xx
         //   Then for every reference the following data is included;
         // Deviation in bytes         %xxx....
         // Deviation in milliseconds  %xxx....
         $frame_offset = 0;
         $parsedFrame['framesbetweenreferences'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 0, 2));
         $parsedFrame['bytesbetweenreferences'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 2, 3));
         $parsedFrame['msbetweenreferences'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 5, 3));
         $parsedFrame['bitsforbytesdeviation'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 8, 1));
         $parsedFrame['bitsformsdeviation'] = Helper::BigEndian2Int(substr($parsedFrame['data'], 9, 1));
         $parsedFrame['data'] = substr($parsedFrame['data'], 10);
         while ($frame_offset < strlen($parsedFrame['data'])) {
             $deviationbitstream .= Helper::BigEndian2Bin(substr($parsedFrame['data'], $frame_offset++, 1));
         }
         $reference_counter = 0;
         while (strlen($deviationbitstream) > 0) {
             $parsedFrame[$reference_counter]['bytedeviation'] = bindec(substr($deviationbitstream, 0, $parsedFrame['bitsforbytesdeviation']));
             $parsedFrame[$reference_counter]['msdeviation'] = bindec(substr($deviationbitstream, $parsedFrame['bitsforbytesdeviation'], $parsedFrame['bitsformsdeviation']));
             $deviationbitstream = substr($deviationbitstream, $parsedFrame['bitsforbytesdeviation'] + $parsedFrame['bitsformsdeviation']);
             ++$reference_counter;
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'SYTC' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'STC') {
         // 4.8   STC  Synchronised tempo codes
         //   There may only be one 'SYTC' frame in each tag
         // <Header for 'Synchronised tempo codes', ID: 'SYTC'>
         // Time stamp format   $xx
         // Tempo data          <binary data>
         //   Where time stamp format is:
         // $01  (32-bit value) MPEG frames from beginning of file
         // $02  (32-bit value) milliseconds from beginning of file
         $frame_offset = 0;
         $parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $timestamp_counter = 0;
         while ($frame_offset < strlen($parsedFrame['data'])) {
             $parsedFrame[$timestamp_counter]['tempo'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
             if ($parsedFrame[$timestamp_counter]['tempo'] == 255) {
                 $parsedFrame[$timestamp_counter]['tempo'] += ord(substr($parsedFrame['data'], $frame_offset++, 1));
             }
             $parsedFrame[$timestamp_counter]['timestamp'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
             $frame_offset += 4;
             ++$timestamp_counter;
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'USLT' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'ULT') {
         // 4.9   ULT  Unsynchronised lyric/text transcription
         //   There may be more than one 'Unsynchronised lyrics/text transcription' frame
         //   in each tag, but only one with the same language and content descriptor.
         // <Header for 'Unsynchronised lyrics/text transcription', ID: 'USLT'>
         // Text encoding        $xx
         // Language             $xx xx xx
         // Content descriptor   <text string according to encoding> $00 (00)
         // Lyrics/text          <full text string according to encoding>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_language = substr($parsedFrame['data'], $frame_offset, 3);
         $frame_offset += 3;
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_description) === 0) {
             $frame_description = '';
         }
         $parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['data'] = $parsedFrame['data'];
         $parsedFrame['language'] = $frame_language;
         $parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
         $parsedFrame['description'] = $frame_description;
         if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'SYLT' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'SLT') {
         // 4.10  SLT  Synchronised lyric/text
         //   There may be more than one 'SYLT' frame in each tag,
         //   but only one with the same language and content descriptor.
         // <Header for 'Synchronised lyrics/text', ID: 'SYLT'>
         // Text encoding        $xx
         // Language             $xx xx xx
         // Time stamp format    $xx
         //   $01  (32-bit value) MPEG frames from beginning of file
         //   $02  (32-bit value) milliseconds from beginning of file
         // Content type         $xx
         // Content descriptor   <text string according to encoding> $00 (00)
         //   Terminated text to be synced (typically a syllable)
         //   Sync identifier (terminator to above string)   $00 (00)
         //   Time stamp                                     $xx (xx ...)
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_language = substr($parsedFrame['data'], $frame_offset, 3);
         $frame_offset += 3;
         $parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['contenttypeid'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['contenttype'] = $this->SYTLContentTypeLookup($parsedFrame['contenttypeid']);
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['language'] = $frame_language;
         $parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
         $timestampindex = 0;
         $frame_remainingdata = substr($parsedFrame['data'], $frame_offset);
         while (strlen($frame_remainingdata)) {
             $frame_offset = 0;
             $frame_terminatorpos = strpos($frame_remainingdata, $this->TextEncodingTerminatorLookup($frame_textencoding));
             if ($frame_terminatorpos === false) {
                 $frame_remainingdata = '';
             } else {
                 if (ord(substr($frame_remainingdata, $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
                     ++$frame_terminatorpos;
                     // strpos() fooled because 2nd byte of Unicode chars are often 0x00
                 }
                 $parsedFrame['lyrics'][$timestampindex]['data'] = substr($frame_remainingdata, $frame_offset, $frame_terminatorpos - $frame_offset);
                 $frame_remainingdata = substr($frame_remainingdata, $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
                 if ($timestampindex == 0 && ord($frame_remainingdata[0]) != 0) {
                     // timestamp probably omitted for first data item
                 } else {
                     $parsedFrame['lyrics'][$timestampindex]['timestamp'] = Helper::BigEndian2Int(substr($frame_remainingdata, 0, 4));
                     $frame_remainingdata = substr($frame_remainingdata, 4);
                 }
                 ++$timestampindex;
             }
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'COMM' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'COM') {
         // 4.11  COM  Comments
         //   There may be more than one comment frame in each tag,
         //   but only one with the same language and content descriptor.
         // <Header for 'Comment', ID: 'COMM'>
         // Text encoding          $xx
         // Language               $xx xx xx
         // Short content descrip. <text string according to encoding> $00 (00)
         // The actual text        <full text string according to encoding>
         if (strlen($parsedFrame['data']) < 5) {
             $info['warning'][] = 'Invalid data (too short) for "' . $parsedFrame['frame_name'] . '" frame at offset ' . $parsedFrame['dataoffset'];
         } else {
             $frame_offset = 0;
             $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
             if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
                 $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
             }
             $frame_language = substr($parsedFrame['data'], $frame_offset, 3);
             $frame_offset += 3;
             $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
             if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
                 ++$frame_terminatorpos;
                 // strpos() fooled because 2nd byte of Unicode chars are often 0x00
             }
             $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
             if (ord($frame_description) === 0) {
                 $frame_description = '';
             }
             $frame_text = (string) substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
             $parsedFrame['encodingid'] = $frame_textencoding;
             $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
             $parsedFrame['language'] = $frame_language;
             $parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
             $parsedFrame['description'] = $frame_description;
             $parsedFrame['data'] = $frame_text;
             if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
                 $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
             }
         }
     } elseif ($id3v2_majorversion >= 4 && $parsedFrame['frame_name'] == 'RVA2') {
         // 4.11  RVA2 Relative volume adjustment (2) (ID3v2.4+ only)
         //   There may be more than one 'RVA2' frame in each tag,
         //   but only one with the same identification string
         // <Header for 'Relative volume adjustment (2)', ID: 'RVA2'>
         // Identification          <text string> $00
         //   The 'identification' string is used to identify the situation and/or
         //   device where this adjustment should apply. The following is then
         //   repeated for every channel:
         // Type of channel         $xx
         // Volume adjustment       $xx xx
         // Bits representing peak  $xx
         // Peak volume             $xx (xx ...)
         $frame_terminatorpos = strpos($parsedFrame['data'], "");
         $frame_idstring = substr($parsedFrame['data'], 0, $frame_terminatorpos);
         if (ord($frame_idstring) === 0) {
             $frame_idstring = '';
         }
         $frame_remainingdata = substr($parsedFrame['data'], $frame_terminatorpos + strlen(""));
         $parsedFrame['description'] = $frame_idstring;
         $RVA2channelcounter = 0;
         while (strlen($frame_remainingdata) >= 5) {
             $frame_offset = 0;
             $frame_channeltypeid = ord(substr($frame_remainingdata, $frame_offset++, 1));
             $parsedFrame[$RVA2channelcounter]['channeltypeid'] = $frame_channeltypeid;
             $parsedFrame[$RVA2channelcounter]['channeltype'] = $this->RVA2ChannelTypeLookup($frame_channeltypeid);
             $parsedFrame[$RVA2channelcounter]['volumeadjust'] = Helper::BigEndian2Int(substr($frame_remainingdata, $frame_offset, 2), false, true);
             // 16-bit signed
             $frame_offset += 2;
             $parsedFrame[$RVA2channelcounter]['bitspeakvolume'] = ord(substr($frame_remainingdata, $frame_offset++, 1));
             if ($parsedFrame[$RVA2channelcounter]['bitspeakvolume'] < 1 || $parsedFrame[$RVA2channelcounter]['bitspeakvolume'] > 4) {
                 $info['warning'][] = 'ID3v2::RVA2 frame[' . $RVA2channelcounter . '] contains invalid ' . $parsedFrame[$RVA2channelcounter]['bitspeakvolume'] . '-byte bits-representing-peak value';
                 break;
             }
             $frame_bytespeakvolume = ceil($parsedFrame[$RVA2channelcounter]['bitspeakvolume'] / 8);
             $parsedFrame[$RVA2channelcounter]['peakvolume'] = Helper::BigEndian2Int(substr($frame_remainingdata, $frame_offset, $frame_bytespeakvolume));
             $frame_remainingdata = substr($frame_remainingdata, $frame_offset + $frame_bytespeakvolume);
             ++$RVA2channelcounter;
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion == 3 && $parsedFrame['frame_name'] == 'RVAD' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'RVA') {
         // 4.12  RVA  Relative volume adjustment (ID3v2.2 only)
         //   There may only be one 'RVA' frame in each tag
         // <Header for 'Relative volume adjustment', ID: 'RVA'>
         // ID3v2.2 => Increment/decrement     %000000ba
         // ID3v2.3 => Increment/decrement     %00fedcba
         // Bits used for volume descr.        $xx
         // Relative volume change, right      $xx xx (xx ...) // a
         // Relative volume change, left       $xx xx (xx ...) // b
         // Peak volume right                  $xx xx (xx ...)
         // Peak volume left                   $xx xx (xx ...)
         //   ID3v2.3 only, optional (not present in ID3v2.2):
         // Relative volume change, right back $xx xx (xx ...) // c
         // Relative volume change, left back  $xx xx (xx ...) // d
         // Peak volume right back             $xx xx (xx ...)
         // Peak volume left back              $xx xx (xx ...)
         //   ID3v2.3 only, optional (not present in ID3v2.2):
         // Relative volume change, center     $xx xx (xx ...) // e
         // Peak volume center                 $xx xx (xx ...)
         //   ID3v2.3 only, optional (not present in ID3v2.2):
         // Relative volume change, bass       $xx xx (xx ...) // f
         // Peak volume bass                   $xx xx (xx ...)
         $frame_offset = 0;
         $frame_incrdecrflags = Helper::BigEndian2Bin(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['incdec']['right'] = (bool) substr($frame_incrdecrflags, 6, 1);
         $parsedFrame['incdec']['left'] = (bool) substr($frame_incrdecrflags, 7, 1);
         $parsedFrame['bitsvolume'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $frame_bytesvolume = ceil($parsedFrame['bitsvolume'] / 8);
         $parsedFrame['volumechange']['right'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
         if ($parsedFrame['incdec']['right'] === false) {
             $parsedFrame['volumechange']['right'] *= -1;
         }
         $frame_offset += $frame_bytesvolume;
         $parsedFrame['volumechange']['left'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
         if ($parsedFrame['incdec']['left'] === false) {
             $parsedFrame['volumechange']['left'] *= -1;
         }
         $frame_offset += $frame_bytesvolume;
         $parsedFrame['peakvolume']['right'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
         $frame_offset += $frame_bytesvolume;
         $parsedFrame['peakvolume']['left'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
         $frame_offset += $frame_bytesvolume;
         if ($id3v2_majorversion == 3) {
             $parsedFrame['data'] = substr($parsedFrame['data'], $frame_offset);
             if (strlen($parsedFrame['data']) > 0) {
                 $parsedFrame['incdec']['rightrear'] = (bool) substr($frame_incrdecrflags, 4, 1);
                 $parsedFrame['incdec']['leftrear'] = (bool) substr($frame_incrdecrflags, 5, 1);
                 $parsedFrame['volumechange']['rightrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 if ($parsedFrame['incdec']['rightrear'] === false) {
                     $parsedFrame['volumechange']['rightrear'] *= -1;
                 }
                 $frame_offset += $frame_bytesvolume;
                 $parsedFrame['volumechange']['leftrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 if ($parsedFrame['incdec']['leftrear'] === false) {
                     $parsedFrame['volumechange']['leftrear'] *= -1;
                 }
                 $frame_offset += $frame_bytesvolume;
                 $parsedFrame['peakvolume']['rightrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 $frame_offset += $frame_bytesvolume;
                 $parsedFrame['peakvolume']['leftrear'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 $frame_offset += $frame_bytesvolume;
             }
             $parsedFrame['data'] = substr($parsedFrame['data'], $frame_offset);
             if (strlen($parsedFrame['data']) > 0) {
                 $parsedFrame['incdec']['center'] = (bool) substr($frame_incrdecrflags, 3, 1);
                 $parsedFrame['volumechange']['center'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 if ($parsedFrame['incdec']['center'] === false) {
                     $parsedFrame['volumechange']['center'] *= -1;
                 }
                 $frame_offset += $frame_bytesvolume;
                 $parsedFrame['peakvolume']['center'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 $frame_offset += $frame_bytesvolume;
             }
             $parsedFrame['data'] = substr($parsedFrame['data'], $frame_offset);
             if (strlen($parsedFrame['data']) > 0) {
                 $parsedFrame['incdec']['bass'] = (bool) substr($frame_incrdecrflags, 2, 1);
                 $parsedFrame['volumechange']['bass'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 if ($parsedFrame['incdec']['bass'] === false) {
                     $parsedFrame['volumechange']['bass'] *= -1;
                 }
                 $frame_offset += $frame_bytesvolume;
                 $parsedFrame['peakvolume']['bass'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesvolume));
                 $frame_offset += $frame_bytesvolume;
             }
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 4 && $parsedFrame['frame_name'] == 'EQU2') {
         // 4.12  EQU2 Equalisation (2) (ID3v2.4+ only)
         //   There may be more than one 'EQU2' frame in each tag,
         //   but only one with the same identification string
         // <Header of 'Equalisation (2)', ID: 'EQU2'>
         // Interpolation method  $xx
         //   $00  Band
         //   $01  Linear
         // Identification        <text string> $00
         //   The following is then repeated for every adjustment point
         // Frequency          $xx xx
         // Volume adjustment  $xx xx
         $frame_offset = 0;
         $frame_interpolationmethod = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_idstring = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_idstring) === 0) {
             $frame_idstring = '';
         }
         $parsedFrame['description'] = $frame_idstring;
         $frame_remainingdata = substr($parsedFrame['data'], $frame_terminatorpos + strlen(""));
         while (strlen($frame_remainingdata)) {
             $frame_frequency = Helper::BigEndian2Int(substr($frame_remainingdata, 0, 2)) / 2;
             $parsedFrame['data'][$frame_frequency] = Helper::BigEndian2Int(substr($frame_remainingdata, 2, 2), false, true);
             $frame_remainingdata = substr($frame_remainingdata, 4);
         }
         $parsedFrame['interpolationmethod'] = $frame_interpolationmethod;
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion == 3 && $parsedFrame['frame_name'] == 'EQUA' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'EQU') {
         // 4.13  EQU  Equalisation (ID3v2.2 only)
         //   There may only be one 'EQUA' frame in each tag
         // <Header for 'Relative volume adjustment', ID: 'EQU'>
         // Adjustment bits    $xx
         //   This is followed by 2 bytes + ('adjustment bits' rounded up to the
         //   nearest byte) for every equalisation band in the following format,
         //   giving a frequency range of 0 - 32767Hz:
         // Increment/decrement   %x (MSB of the Frequency)
         // Frequency             (lower 15 bits)
         // Adjustment            $xx (xx ...)
         $frame_offset = 0;
         $parsedFrame['adjustmentbits'] = substr($parsedFrame['data'], $frame_offset++, 1);
         $frame_adjustmentbytes = ceil($parsedFrame['adjustmentbits'] / 8);
         $frame_remainingdata = (string) substr($parsedFrame['data'], $frame_offset);
         while (strlen($frame_remainingdata) > 0) {
             $frame_frequencystr = Helper::BigEndian2Bin(substr($frame_remainingdata, 0, 2));
             $frame_incdec = (bool) substr($frame_frequencystr, 0, 1);
             $frame_frequency = bindec(substr($frame_frequencystr, 1, 15));
             $parsedFrame[$frame_frequency]['incdec'] = $frame_incdec;
             $parsedFrame[$frame_frequency]['adjustment'] = Helper::BigEndian2Int(substr($frame_remainingdata, 2, $frame_adjustmentbytes));
             if ($parsedFrame[$frame_frequency]['incdec'] === false) {
                 $parsedFrame[$frame_frequency]['adjustment'] *= -1;
             }
             $frame_remainingdata = substr($frame_remainingdata, 2 + $frame_adjustmentbytes);
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'RVRB' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'REV') {
         // 4.14  REV  Reverb
         //   There may only be one 'RVRB' frame in each tag.
         // <Header for 'Reverb', ID: 'RVRB'>
         // Reverb left (ms)                 $xx xx
         // Reverb right (ms)                $xx xx
         // Reverb bounces, left             $xx
         // Reverb bounces, right            $xx
         // Reverb feedback, left to left    $xx
         // Reverb feedback, left to right   $xx
         // Reverb feedback, right to right  $xx
         // Reverb feedback, right to left   $xx
         // Premix left to right             $xx
         // Premix right to left             $xx
         $frame_offset = 0;
         $parsedFrame['left'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $parsedFrame['right'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $parsedFrame['bouncesL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['bouncesR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['feedbackLL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['feedbackLR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['feedbackRR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['feedbackRL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['premixLR'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['premixRL'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'APIC' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'PIC') {
         // 4.15  PIC  Attached picture
         //   There may be several pictures attached to one file,
         //   each in their individual 'APIC' frame, but only one
         //   with the same content descriptor
         // <Header for 'Attached picture', ID: 'APIC'>
         // Text encoding      $xx
         // ID3v2.3+ => MIME type          <text string> $00
         // ID3v2.2  => Image format       $xx xx xx
         // Picture type       $xx
         // Description        <text string according to encoding> $00 (00)
         // Picture data       <binary data>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         if ($id3v2_majorversion == 2 && strlen($parsedFrame['data']) > $frame_offset) {
             $frame_imagetype = substr($parsedFrame['data'], $frame_offset, 3);
             if (strtolower($frame_imagetype) == 'ima') {
                 // complete hack for mp3Rage (www.chaoticsoftware.com) that puts ID3v2.3-formatted
                 // MIME type instead of 3-char ID3v2.2-format image type  (thanks xbhoffØpacbell*net)
                 $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
                 $frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
                 if (ord($frame_mimetype) === 0) {
                     $frame_mimetype = '';
                 }
                 $frame_imagetype = strtoupper(str_replace('image/', '', strtolower($frame_mimetype)));
                 if ($frame_imagetype == 'JPEG') {
                     $frame_imagetype = 'JPG';
                 }
                 $frame_offset = $frame_terminatorpos + strlen("");
             } else {
                 $frame_offset += 3;
             }
         }
         if ($id3v2_majorversion > 2 && strlen($parsedFrame['data']) > $frame_offset) {
             $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
             $frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
             if (ord($frame_mimetype) === 0) {
                 $frame_mimetype = '';
             }
             $frame_offset = $frame_terminatorpos + strlen("");
         }
         $frame_picturetype = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($frame_offset >= $parsedFrame['datalength']) {
             $info['warning'][] = 'data portion of APIC frame is missing at offset ' . ($parsedFrame['dataoffset'] + 8 + $frame_offset);
         } else {
             $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
             if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
                 ++$frame_terminatorpos;
                 // strpos() fooled because 2nd byte of Unicode chars are often 0x00
             }
             $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
             if (ord($frame_description) === 0) {
                 $frame_description = '';
             }
             $parsedFrame['encodingid'] = $frame_textencoding;
             $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
             if ($id3v2_majorversion == 2) {
                 $parsedFrame['imagetype'] = $frame_imagetype;
             } else {
                 $parsedFrame['mime'] = $frame_mimetype;
             }
             $parsedFrame['picturetypeid'] = $frame_picturetype;
             $parsedFrame['picturetype'] = $this->APICPictureTypeLookup($frame_picturetype);
             $parsedFrame['description'] = $frame_description;
             $parsedFrame['data'] = substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)));
             $parsedFrame['datalength'] = strlen($parsedFrame['data']);
             $parsedFrame['image_mime'] = '';
             $imageinfo = array();
             $imagechunkcheck = Helper::GetDataImageSize($parsedFrame['data'], $imageinfo);
             if ($imagechunkcheck[2] >= 1 && $imagechunkcheck[2] <= 3) {
                 $parsedFrame['image_mime'] = 'image/' . Helper::ImageTypesLookup($imagechunkcheck[2]);
                 if ($imagechunkcheck[0]) {
                     $parsedFrame['image_width'] = $imagechunkcheck[0];
                 }
                 if ($imagechunkcheck[1]) {
                     $parsedFrame['image_height'] = $imagechunkcheck[1];
                 }
             }
             do {
                 if ($this->inline_attachments === false) {
                     // skip entirely
                     unset($parsedFrame['data']);
                     break;
                 }
                 if ($this->inline_attachments === true) {
                     // great
                 } elseif (is_int($this->inline_attachments)) {
                     if ($this->inline_attachments < $parsedFrame['data_length']) {
                         // too big, skip
                         $info['warning'][] = 'attachment at ' . $frame_offset . ' is too large to process inline (' . number_format($parsedFrame['data_length']) . ' bytes)';
                         unset($parsedFrame['data']);
                         break;
                     }
                 } elseif (is_string($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
                         $info['warning'][] = 'attachment at ' . $frame_offset . ' cannot be saved to "' . $this->inline_attachments . '" (not writable)';
                         unset($parsedFrame['data']);
                         break;
                     }
                 }
                 // if we get this far, must be OK
                 if (is_string($this->inline_attachments)) {
                     $destination_filename = $this->inline_attachments . DIRECTORY_SEPARATOR . md5($info['filenamepath']) . '_' . $frame_offset;
                     if (!file_exists($destination_filename) || is_writable($destination_filename)) {
                         file_put_contents($destination_filename, $parsedFrame['data']);
                     } else {
                         $info['warning'][] = 'attachment at ' . $frame_offset . ' cannot be saved to "' . $destination_filename . '" (not writable)';
                     }
                     $parsedFrame['data_filename'] = $destination_filename;
                     unset($parsedFrame['data']);
                 } else {
                     if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
                         if (!isset($info['id3v2']['comments']['picture'])) {
                             $info['id3v2']['comments']['picture'] = array();
                         }
                         $info['id3v2']['comments']['picture'][] = array('data' => $parsedFrame['data'], 'image_mime' => $parsedFrame['image_mime']);
                     }
                 }
             } while (false);
         }
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'GEOB' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'GEO') {
         // 4.16  GEO  General encapsulated object
         //   There may be more than one 'GEOB' frame in each tag,
         //   but only one with the same content descriptor
         // <Header for 'General encapsulated object', ID: 'GEOB'>
         // Text encoding          $xx
         // MIME type              <text string> $00
         // Filename               <text string according to encoding> $00 (00)
         // Content description    <text string according to encoding> $00 (00)
         // Encapsulated object    <binary data>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_mimetype) === 0) {
             $frame_mimetype = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_filename = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_filename) === 0) {
             $frame_filename = '';
         }
         $frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_description) === 0) {
             $frame_description = '';
         }
         $frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
         $parsedFrame['objectdata'] = (string) substr($parsedFrame['data'], $frame_offset);
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['mime'] = $frame_mimetype;
         $parsedFrame['filename'] = $frame_filename;
         $parsedFrame['description'] = $frame_description;
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'PCNT' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'CNT') {
         // 4.17  CNT  Play counter
         //   There may only be one 'PCNT' frame in each tag.
         //   When the counter reaches all one's, one byte is inserted in
         //   front of the counter thus making the counter eight bits bigger
         // <Header for 'Play counter', ID: 'PCNT'>
         // Counter        $xx xx xx xx (xx ...)
         $parsedFrame['data'] = Helper::BigEndian2Int($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'POPM' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'POP') {
         // 4.18  POP  Popularimeter
         //   There may be more than one 'POPM' frame in each tag,
         //   but only one with the same email address
         // <Header for 'Popularimeter', ID: 'POPM'>
         // Email to user   <text string> $00
         // Rating          $xx
         // Counter         $xx xx xx xx (xx ...)
         $frame_offset = 0;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_emailaddress = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_emailaddress) === 0) {
             $frame_emailaddress = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $frame_rating = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['counter'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset));
         $parsedFrame['email'] = $frame_emailaddress;
         $parsedFrame['rating'] = $frame_rating;
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'RBUF' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'BUF') {
         // 4.19  BUF  Recommended buffer size
         //   There may only be one 'RBUF' frame in each tag
         // <Header for 'Recommended buffer size', ID: 'RBUF'>
         // Buffer size               $xx xx xx
         // Embedded info flag        %0000000x
         // Offset to next tag        $xx xx xx xx
         $frame_offset = 0;
         $parsedFrame['buffersize'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 3));
         $frame_offset += 3;
         $frame_embeddedinfoflags = Helper::BigEndian2Bin(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['flags']['embededinfo'] = (bool) substr($frame_embeddedinfoflags, 7, 1);
         $parsedFrame['nexttagoffset'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'CRM') {
         // 4.20  Encrypted meta frame (ID3v2.2 only)
         //   There may be more than one 'CRM' frame in a tag,
         //   but only one with the same 'owner identifier'
         // <Header for 'Encrypted meta frame', ID: 'CRM'>
         // Owner identifier      <textstring> $00 (00)
         // Content/explanation   <textstring> $00 (00)
         // Encrypted datablock   <binary data>
         $frame_offset = 0;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         $frame_offset = $frame_terminatorpos + strlen("");
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_description) === 0) {
             $frame_description = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['ownerid'] = $frame_ownerid;
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
         $parsedFrame['description'] = $frame_description;
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'AENC' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'CRA') {
         // 4.21  CRA  Audio encryption
         //   There may be more than one 'AENC' frames in a tag,
         //   but only one with the same 'Owner identifier'
         // <Header for 'Audio encryption', ID: 'AENC'>
         // Owner identifier   <text string> $00
         // Preview start      $xx xx
         // Preview length     $xx xx
         // Encryption info    <binary data>
         $frame_offset = 0;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_ownerid) === 0) {
             $frame_ownerid == '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['ownerid'] = $frame_ownerid;
         $parsedFrame['previewstart'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $parsedFrame['previewlength'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $parsedFrame['encryptioninfo'] = (string) substr($parsedFrame['data'], $frame_offset);
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'LINK' || $id3v2_majorversion == 2 && $parsedFrame['frame_name'] == 'LNK') {
         // 4.22  LNK  Linked information
         //   There may be more than one 'LINK' frame in a tag,
         //   but only one with the same contents
         // <Header for 'Linked information', ID: 'LINK'>
         // ID3v2.3+ => Frame identifier   $xx xx xx xx
         // ID3v2.2  => Frame identifier   $xx xx xx
         // URL                            <text string> $00
         // ID and additional data         <text string(s)>
         $frame_offset = 0;
         if ($id3v2_majorversion == 2) {
             $parsedFrame['frameid'] = substr($parsedFrame['data'], $frame_offset, 3);
             $frame_offset += 3;
         } else {
             $parsedFrame['frameid'] = substr($parsedFrame['data'], $frame_offset, 4);
             $frame_offset += 4;
         }
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_url = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_url) === 0) {
             $frame_url = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['url'] = $frame_url;
         $parsedFrame['additionaldata'] = (string) substr($parsedFrame['data'], $frame_offset);
         if (!empty($parsedFrame['framenameshort']) && $parsedFrame['url']) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = utf8_encode($parsedFrame['url']);
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'POSS') {
         // 4.21  POSS Position synchronisation frame (ID3v2.3+ only)
         //   There may only be one 'POSS' frame in each tag
         // <Head for 'Position synchronisation', ID: 'POSS'>
         // Time stamp format         $xx
         // Position                  $xx (xx ...)
         $frame_offset = 0;
         $parsedFrame['timestampformat'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['position'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset));
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'USER') {
         // 4.22  USER Terms of use (ID3v2.3+ only)
         //   There may be more than one 'Terms of use' frame in a tag,
         //   but only one with the same 'Language'
         // <Header for 'Terms of use frame', ID: 'USER'>
         // Text encoding        $xx
         // Language             $xx xx xx
         // The actual text      <text string according to encoding>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_language = substr($parsedFrame['data'], $frame_offset, 3);
         $frame_offset += 3;
         $parsedFrame['language'] = $frame_language;
         $parsedFrame['languagename'] = $this->LanguageLookup($frame_language, false);
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
         if (!empty($parsedFrame['framenameshort']) && !empty($parsedFrame['data'])) {
             $info['id3v2']['comments'][$parsedFrame['framenameshort']][] = Helper::iconv_fallback($parsedFrame['encoding'], $info['id3v2']['encoding'], $parsedFrame['data']);
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'OWNE') {
         // 4.23  OWNE Ownership frame (ID3v2.3+ only)
         //   There may only be one 'OWNE' frame in a tag
         // <Header for 'Ownership frame', ID: 'OWNE'>
         // Text encoding     $xx
         // Price paid        <text string> $00
         // Date of purch.    <text string>
         // Seller            <text string according to encoding>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_pricepaid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['pricepaid']['currencyid'] = substr($frame_pricepaid, 0, 3);
         $parsedFrame['pricepaid']['currency'] = $this->LookupCurrencyUnits($parsedFrame['pricepaid']['currencyid']);
         $parsedFrame['pricepaid']['value'] = substr($frame_pricepaid, 3);
         $parsedFrame['purchasedate'] = substr($parsedFrame['data'], $frame_offset, 8);
         if (!$this->IsValidDateStampString($parsedFrame['purchasedate'])) {
             $parsedFrame['purchasedateunix'] = mktime(0, 0, 0, substr($parsedFrame['purchasedate'], 4, 2), substr($parsedFrame['purchasedate'], 6, 2), substr($parsedFrame['purchasedate'], 0, 4));
         }
         $frame_offset += 8;
         $parsedFrame['seller'] = (string) substr($parsedFrame['data'], $frame_offset);
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'COMR') {
         // 4.24  COMR Commercial frame (ID3v2.3+ only)
         //   There may be more than one 'commercial frame' in a tag,
         //   but no two may be identical
         // <Header for 'Commercial frame', ID: 'COMR'>
         // Text encoding      $xx
         // Price string       <text string> $00
         // Valid until        <text string>
         // Contact URL        <text string> $00
         // Received as        $xx
         // Name of seller     <text string according to encoding> $00 (00)
         // Description        <text string according to encoding> $00 (00)
         // Picture MIME type  <string> $00
         // Seller logo        <binary data>
         $frame_offset = 0;
         $frame_textencoding = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         if ($id3v2_majorversion <= 3 && $frame_textencoding > 1 || $id3v2_majorversion == 4 && $frame_textencoding > 3) {
             $info['warning'][] = 'Invalid text encoding byte (' . $frame_textencoding . ') in frame "' . $parsedFrame['frame_name'] . '" - defaulting to ISO-8859-1 encoding';
         }
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_pricestring = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         $frame_offset = $frame_terminatorpos + strlen("");
         $frame_rawpricearray = explode('/', $frame_pricestring);
         foreach ($frame_rawpricearray as $key => $val) {
             $frame_currencyid = substr($val, 0, 3);
             $parsedFrame['price'][$frame_currencyid]['currency'] = $this->LookupCurrencyUnits($frame_currencyid);
             $parsedFrame['price'][$frame_currencyid]['value'] = substr($val, 3);
         }
         $frame_datestring = substr($parsedFrame['data'], $frame_offset, 8);
         $frame_offset += 8;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_contacturl = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         $frame_offset = $frame_terminatorpos + strlen("");
         $frame_receivedasid = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_sellername = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_sellername) === 0) {
             $frame_sellername = '';
         }
         $frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
         $frame_terminatorpos = strpos($parsedFrame['data'], $this->TextEncodingTerminatorLookup($frame_textencoding), $frame_offset);
         if (ord(substr($parsedFrame['data'], $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding)), 1)) === 0) {
             ++$frame_terminatorpos;
             // strpos() fooled because 2nd byte of Unicode chars are often 0x00
         }
         $frame_description = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_description) === 0) {
             $frame_description = '';
         }
         $frame_offset = $frame_terminatorpos + strlen($this->TextEncodingTerminatorLookup($frame_textencoding));
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_mimetype = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         $frame_offset = $frame_terminatorpos + strlen("");
         $frame_sellerlogo = substr($parsedFrame['data'], $frame_offset);
         $parsedFrame['encodingid'] = $frame_textencoding;
         $parsedFrame['encoding'] = $this->TextEncodingNameLookup($frame_textencoding);
         $parsedFrame['pricevaliduntil'] = $frame_datestring;
         $parsedFrame['contacturl'] = $frame_contacturl;
         $parsedFrame['receivedasid'] = $frame_receivedasid;
         $parsedFrame['receivedas'] = $this->COMRReceivedAsLookup($frame_receivedasid);
         $parsedFrame['sellername'] = $frame_sellername;
         $parsedFrame['description'] = $frame_description;
         $parsedFrame['mime'] = $frame_mimetype;
         $parsedFrame['logo'] = $frame_sellerlogo;
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'ENCR') {
         // 4.25  ENCR Encryption method registration (ID3v2.3+ only)
         //   There may be several 'ENCR' frames in a tag,
         //   but only one containing the same symbol
         //   and only one containing the same owner identifier
         // <Header for 'Encryption method registration', ID: 'ENCR'>
         // Owner identifier    <text string> $00
         // Method symbol       $xx
         // Encryption data     <binary data>
         $frame_offset = 0;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_ownerid) === 0) {
             $frame_ownerid = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['ownerid'] = $frame_ownerid;
         $parsedFrame['methodsymbol'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'GRID') {
         // 4.26  GRID Group identification registration (ID3v2.3+ only)
         //   There may be several 'GRID' frames in a tag,
         //   but only one containing the same symbol
         //   and only one containing the same owner identifier
         // <Header for 'Group ID registration', ID: 'GRID'>
         // Owner identifier      <text string> $00
         // Group symbol          $xx
         // Group dependent data  <binary data>
         $frame_offset = 0;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_ownerid) === 0) {
             $frame_ownerid = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['ownerid'] = $frame_ownerid;
         $parsedFrame['groupsymbol'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'PRIV') {
         // 4.27  PRIV Private frame (ID3v2.3+ only)
         //   The tag may contain more than one 'PRIV' frame
         //   but only with different contents
         // <Header for 'Private frame', ID: 'PRIV'>
         // Owner identifier      <text string> $00
         // The private data      <binary data>
         $frame_offset = 0;
         $frame_terminatorpos = strpos($parsedFrame['data'], "", $frame_offset);
         $frame_ownerid = substr($parsedFrame['data'], $frame_offset, $frame_terminatorpos - $frame_offset);
         if (ord($frame_ownerid) === 0) {
             $frame_ownerid = '';
         }
         $frame_offset = $frame_terminatorpos + strlen("");
         $parsedFrame['ownerid'] = $frame_ownerid;
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
     } elseif ($id3v2_majorversion >= 4 && $parsedFrame['frame_name'] == 'SIGN') {
         // 4.28  SIGN Signature frame (ID3v2.4+ only)
         //   There may be more than one 'signature frame' in a tag,
         //   but no two may be identical
         // <Header for 'Signature frame', ID: 'SIGN'>
         // Group symbol      $xx
         // Signature         <binary data>
         $frame_offset = 0;
         $parsedFrame['groupsymbol'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $parsedFrame['data'] = (string) substr($parsedFrame['data'], $frame_offset);
     } elseif ($id3v2_majorversion >= 4 && $parsedFrame['frame_name'] == 'SEEK') {
         // 4.29  SEEK Seek frame (ID3v2.4+ only)
         //   There may only be one 'seek frame' in a tag
         // <Header for 'Seek frame', ID: 'SEEK'>
         // Minimum offset to next tag       $xx xx xx xx
         $frame_offset = 0;
         $parsedFrame['data'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
     } elseif ($id3v2_majorversion >= 4 && $parsedFrame['frame_name'] == 'ASPI') {
         // 4.30  ASPI Audio seek point index (ID3v2.4+ only)
         //   There may only be one 'audio seek point index' frame in a tag
         // <Header for 'Seek Point Index', ID: 'ASPI'>
         // Indexed data start (S)         $xx xx xx xx
         // Indexed data length (L)        $xx xx xx xx
         // Number of index points (N)     $xx xx
         // Bits per index point (b)       $xx
         //   Then for every index point the following data is included:
         // Fraction at index (Fi)          $xx (xx)
         $frame_offset = 0;
         $parsedFrame['datastart'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
         $frame_offset += 4;
         $parsedFrame['indexeddatalength'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 4));
         $frame_offset += 4;
         $parsedFrame['indexpoints'] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $parsedFrame['bitsperpoint'] = ord(substr($parsedFrame['data'], $frame_offset++, 1));
         $frame_bytesperpoint = ceil($parsedFrame['bitsperpoint'] / 8);
         for ($i = 0; $i < $frame_indexpoints; ++$i) {
             $parsedFrame['indexes'][$i] = Helper::BigEndian2Int(substr($parsedFrame['data'], $frame_offset, $frame_bytesperpoint));
             $frame_offset += $frame_bytesperpoint;
         }
         unset($parsedFrame['data']);
     } elseif ($id3v2_majorversion >= 3 && $parsedFrame['frame_name'] == 'RGAD') {
         // Replay Gain Adjustment
         // http://privatewww.essex.ac.uk/~djmrob/replaygain/file_format_id3v2.html
         //   There may only be one 'RGAD' frame in a tag
         // <Header for 'Replay Gain Adjustment', ID: 'RGAD'>
         // Peak Amplitude                      $xx $xx $xx $xx
         // Radio Replay Gain Adjustment        %aaabbbcd %dddddddd
         // Audiophile Replay Gain Adjustment   %aaabbbcd %dddddddd
         //   a - name code
         //   b - originator code
         //   c - sign bit
         //   d - replay gain adjustment
         $frame_offset = 0;
         $parsedFrame['peakamplitude'] = Helper::BigEndian2Float(substr($parsedFrame['data'], $frame_offset, 4));
         $frame_offset += 4;
         $rg_track_adjustment = Helper::Dec2Bin(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $rg_album_adjustment = Helper::Dec2Bin(substr($parsedFrame['data'], $frame_offset, 2));
         $frame_offset += 2;
         $parsedFrame['raw']['track']['name'] = Helper::Bin2Dec(substr($rg_track_adjustment, 0, 3));
         $parsedFrame['raw']['track']['originator'] = Helper::Bin2Dec(substr($rg_track_adjustment, 3, 3));
         $parsedFrame['raw']['track']['signbit'] = Helper::Bin2Dec(substr($rg_track_adjustment, 6, 1));
         $parsedFrame['raw']['track']['adjustment'] = Helper::Bin2Dec(substr($rg_track_adjustment, 7, 9));
         $parsedFrame['raw']['album']['name'] = Helper::Bin2Dec(substr($rg_album_adjustment, 0, 3));
         $parsedFrame['raw']['album']['originator'] = Helper::Bin2Dec(substr($rg_album_adjustment, 3, 3));
         $parsedFrame['raw']['album']['signbit'] = Helper::Bin2Dec(substr($rg_album_adjustment, 6, 1));
         $parsedFrame['raw']['album']['adjustment'] = Helper::Bin2Dec(substr($rg_album_adjustment, 7, 9));
         $parsedFrame['track']['name'] = Helper::RGADnameLookup($parsedFrame['raw']['track']['name']);
         $parsedFrame['track']['originator'] = Helper::RGADoriginatorLookup($parsedFrame['raw']['track']['originator']);
         $parsedFrame['track']['adjustment'] = Helper::RGADadjustmentLookup($parsedFrame['raw']['track']['adjustment'], $parsedFrame['raw']['track']['signbit']);
         $parsedFrame['album']['name'] = Helper::RGADnameLookup($parsedFrame['raw']['album']['name']);
         $parsedFrame['album']['originator'] = Helper::RGADoriginatorLookup($parsedFrame['raw']['album']['originator']);
         $parsedFrame['album']['adjustment'] = Helper::RGADadjustmentLookup($parsedFrame['raw']['album']['adjustment'], $parsedFrame['raw']['album']['signbit']);
         $info['replay_gain']['track']['peak'] = $parsedFrame['peakamplitude'];
         $info['replay_gain']['track']['originator'] = $parsedFrame['track']['originator'];
         $info['replay_gain']['track']['adjustment'] = $parsedFrame['track']['adjustment'];
         $info['replay_gain']['album']['originator'] = $parsedFrame['album']['originator'];
         $info['replay_gain']['album']['adjustment'] = $parsedFrame['album']['adjustment'];
         unset($parsedFrame['data']);
     }
     return true;
 }