/components/com_jce/editor/tiny_mce/plugins/mediamanager/classes/getid3/module.audio.ogg.php
PHP | 709 lines | 550 code | 109 blank | 50 comment | 83 complexity | bafa7ef7d84480bacfef96259d662f81 MD5 | raw file
Possible License(s): LGPL-3.0, GPL-2.0, MIT, BSD-3-Clause, LGPL-2.1
- <?php
- /////////////////////////////////////////////////////////////////
- /// getID3() by James Heinrich <info@getid3.org> //
- // available at http://getid3.sourceforge.net //
- // or http://www.getid3.org //
- /////////////////////////////////////////////////////////////////
- // See readme.txt for more details //
- /////////////////////////////////////////////////////////////////
- // //
- // module.audio.ogg.php //
- // module for analyzing Ogg Vorbis, OggFLAC and Speex files //
- // dependencies: module.audio.flac.php //
- // ///
- /////////////////////////////////////////////////////////////////
- getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.audio.flac.php', __FILE__, true);
- class getid3_ogg extends getid3_handler
- {
- var $inline_attachments = true; // true: return full data for all attachments; false: return no data for all attachments; integer: return data for attachments <= than this; string: save as file to this directory
- function Analyze() {
- $info = &$this->getid3->info;
- $info['fileformat'] = 'ogg';
- // Warn about illegal tags - only vorbiscomments are allowed
- if (isset($info['id3v2'])) {
- $info['warning'][] = 'Illegal ID3v2 tag present.';
- }
- if (isset($info['id3v1'])) {
- $info['warning'][] = 'Illegal ID3v1 tag present.';
- }
- if (isset($info['ape'])) {
- $info['warning'][] = 'Illegal APE tag present.';
- }
- // Page 1 - Stream Header
- fseek($this->getid3->fp, $info['avdataoffset'], SEEK_SET);
- $oggpageinfo = $this->ParseOggPageHeader();
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
- if (ftell($this->getid3->fp) >= $this->getid3->fread_buffer_size()) {
- $info['error'][] = 'Could not find start of Ogg page in the first '.$this->getid3->fread_buffer_size().' bytes (this might not be an Ogg-Vorbis file?)';
- unset($info['fileformat']);
- unset($info['ogg']);
- return false;
- }
- $filedata = fread($this->getid3->fp, $oggpageinfo['page_length']);
- $filedataoffset = 0;
- if (substr($filedata, 0, 4) == 'fLaC') {
- $info['audio']['dataformat'] = 'flac';
- $info['audio']['bitrate_mode'] = 'vbr';
- $info['audio']['lossless'] = true;
- } elseif (substr($filedata, 1, 6) == 'vorbis') {
- $this->ParseVorbisPageHeader($filedata, $filedataoffset, $oggpageinfo);
- } elseif (substr($filedata, 0, 8) == 'Speex ') {
- // http://www.speex.org/manual/node10.html
- $info['audio']['dataformat'] = 'speex';
- $info['mime_type'] = 'audio/speex';
- $info['audio']['bitrate_mode'] = 'abr';
- $info['audio']['lossless'] = false;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_string'] = substr($filedata, $filedataoffset, 8); // hard-coded to 'Speex '
- $filedataoffset += 8;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version'] = substr($filedata, $filedataoffset, 20);
- $filedataoffset += 20;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version_id'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['header_size'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode_bitstream_version'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['bitrate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['framesize'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['frames_per_packet'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['extra_headers'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved1'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved2'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['speex']['speex_version'] = trim($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version']);
- $info['speex']['sample_rate'] = $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'];
- $info['speex']['channels'] = $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'];
- $info['speex']['vbr'] = (bool) $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'];
- $info['speex']['band_type'] = $this->SpeexBandModeLookup($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode']);
- $info['audio']['sample_rate'] = $info['speex']['sample_rate'];
- $info['audio']['channels'] = $info['speex']['channels'];
- if ($info['speex']['vbr']) {
- $info['audio']['bitrate_mode'] = 'vbr';
- }
- } elseif (substr($filedata, 0, 8) == "fishead\x00") {
- // Ogg Skeleton version 3.0 Format Specification
- // http://xiph.org/ogg/doc/skeleton.html
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fishead']['raw']['version_major'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 2));
- $filedataoffset += 2;
- $info['ogg']['skeleton']['fishead']['raw']['version_minor'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 2));
- $filedataoffset += 2;
- $info['ogg']['skeleton']['fishead']['raw']['presentationtime_numerator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fishead']['raw']['presentationtime_denominator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fishead']['raw']['basetime_numerator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fishead']['raw']['basetime_denominator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fishead']['raw']['utc'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 20));
- $filedataoffset += 20;
- $info['ogg']['skeleton']['fishead']['version'] = $info['ogg']['skeleton']['fishead']['raw']['version_major'].'.'.$info['ogg']['skeleton']['fishead']['raw']['version_minor'];
- $info['ogg']['skeleton']['fishead']['presentationtime'] = $info['ogg']['skeleton']['fishead']['raw']['presentationtime_numerator'] / $info['ogg']['skeleton']['fishead']['raw']['presentationtime_denominator'];
- $info['ogg']['skeleton']['fishead']['basetime'] = $info['ogg']['skeleton']['fishead']['raw']['basetime_numerator'] / $info['ogg']['skeleton']['fishead']['raw']['basetime_denominator'];
- $info['ogg']['skeleton']['fishead']['utc'] = $info['ogg']['skeleton']['fishead']['raw']['utc'];
- $counter = 0;
- do {
- $oggpageinfo = $this->ParseOggPageHeader();
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno'].'.'.$counter++] = $oggpageinfo;
- $filedata = fread($this->getid3->fp, $oggpageinfo['page_length']);
- fseek($this->getid3->fp, $oggpageinfo['page_end_offset'], SEEK_SET);
- //echo substr($filedata, 0, 8).'<br>';
- if (substr($filedata, 0, 8) == "fisbone\x00") {
- $filedataoffset = 8;
- $info['ogg']['skeleton']['fisbone']['raw']['message_header_offset'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['skeleton']['fisbone']['raw']['serial_number'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['skeleton']['fisbone']['raw']['number_header_packets'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['skeleton']['fisbone']['raw']['granulerate_numerator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fisbone']['raw']['granulerate_denominator'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fisbone']['raw']['basegranule'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $info['ogg']['skeleton']['fisbone']['raw']['preroll'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['skeleton']['fisbone']['raw']['granuleshift'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $info['ogg']['skeleton']['fisbone']['raw']['padding'] = substr($filedata, $filedataoffset, 3);
- $filedataoffset += 3;
- } elseif (substr($filedata, 1, 6) == 'theora') {
- $info['video']['dataformat'] = 'theora';
- $info['error'][] = 'Ogg Theora not correctly handled in this version of getID3 ['.$this->getid3->version().']';
- //break;
- } elseif (substr($filedata, 1, 6) == 'vorbis') {
- $this->ParseVorbisPageHeader($filedata, $filedataoffset, $oggpageinfo);
- } else {
- $info['error'][] = 'unexpected';
- //break;
- }
- //} while ($oggpageinfo['page_seqno'] == 0);
- } while (($oggpageinfo['page_seqno'] == 0) && (substr($filedata, 0, 8) != "fisbone\x00"));
- fseek($this->getid3->fp, $oggpageinfo['page_start_offset'], SEEK_SET);
- $info['error'][] = 'Ogg Skeleton not correctly handled in this version of getID3 ['.$this->getid3->version().']';
- //return false;
- } else {
- $info['error'][] = 'Expecting either "Speex " or "vorbis" identifier strings, found "'.substr($filedata, 0, 8).'"';
- unset($info['ogg']);
- unset($info['mime_type']);
- return false;
- }
- // Page 2 - Comment Header
- $oggpageinfo = $this->ParseOggPageHeader();
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
- switch ($info['audio']['dataformat']) {
- case 'vorbis':
- $filedata = fread($this->getid3->fp, $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($filedata, 0, 1));
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, 1, 6); // hard-coded to 'vorbis'
- $this->ParseVorbisCommentsFilepointer();
- break;
- case 'flac':
- $getid3_flac = new getid3_flac($this->getid3);
- if (!$getid3_flac->FLACparseMETAdata()) {
- $info['error'][] = 'Failed to parse FLAC headers';
- return false;
- }
- unset($getid3_flac);
- break;
- case 'speex':
- fseek($this->getid3->fp, $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length'], SEEK_CUR);
- $this->ParseVorbisCommentsFilepointer();
- break;
- }
- // Last Page - Number of Samples
- if (!getid3_lib::intValueSupported($info['avdataend'])) {
- $info['warning'][] = 'Unable to parse Ogg end chunk file (PHP does not support file operations beyond '.round(PHP_INT_MAX / 1073741824).'GB)';
- } else {
- fseek($this->getid3->fp, max($info['avdataend'] - $this->getid3->fread_buffer_size(), 0), SEEK_SET);
- $LastChunkOfOgg = strrev(fread($this->getid3->fp, $this->getid3->fread_buffer_size()));
- if ($LastOggSpostion = strpos($LastChunkOfOgg, 'SggO')) {
- fseek($this->getid3->fp, $info['avdataend'] - ($LastOggSpostion + strlen('SggO')), SEEK_SET);
- $info['avdataend'] = ftell($this->getid3->fp);
- $info['ogg']['pageheader']['eos'] = $this->ParseOggPageHeader();
- $info['ogg']['samples'] = $info['ogg']['pageheader']['eos']['pcm_abs_position'];
- if ($info['ogg']['samples'] == 0) {
- $info['error'][] = 'Corrupt Ogg file: eos.number of samples == zero';
- return false;
- }
- if (!empty($info['audio']['sample_rate'])) {
- $info['ogg']['bitrate_average'] = (($info['avdataend'] - $info['avdataoffset']) * 8) / ($info['ogg']['samples'] / $info['audio']['sample_rate']);
- }
- }
- }
- if (!empty($info['ogg']['bitrate_average'])) {
- $info['audio']['bitrate'] = $info['ogg']['bitrate_average'];
- } elseif (!empty($info['ogg']['bitrate_nominal'])) {
- $info['audio']['bitrate'] = $info['ogg']['bitrate_nominal'];
- } elseif (!empty($info['ogg']['bitrate_min']) && !empty($info['ogg']['bitrate_max'])) {
- $info['audio']['bitrate'] = ($info['ogg']['bitrate_min'] + $info['ogg']['bitrate_max']) / 2;
- }
- if (isset($info['audio']['bitrate']) && !isset($info['playtime_seconds'])) {
- if ($info['audio']['bitrate'] == 0) {
- $info['error'][] = 'Corrupt Ogg file: bitrate_audio == zero';
- return false;
- }
- $info['playtime_seconds'] = (float) ((($info['avdataend'] - $info['avdataoffset']) * 8) / $info['audio']['bitrate']);
- }
- if (isset($info['ogg']['vendor'])) {
- $info['audio']['encoder'] = preg_replace('/^Encoded with /', '', $info['ogg']['vendor']);
- // Vorbis only
- if ($info['audio']['dataformat'] == 'vorbis') {
- // Vorbis 1.0 starts with Xiph.Org
- if (preg_match('/^Xiph.Org/', $info['audio']['encoder'])) {
- if ($info['audio']['bitrate_mode'] == 'abr') {
- // Set -b 128 on abr files
- $info['audio']['encoder_options'] = '-b '.round($info['ogg']['bitrate_nominal'] / 1000);
- } elseif (($info['audio']['bitrate_mode'] == 'vbr') && ($info['audio']['channels'] == 2) && ($info['audio']['sample_rate'] >= 44100) && ($info['audio']['sample_rate'] <= 48000)) {
- // Set -q N on vbr files
- $info['audio']['encoder_options'] = '-q '.$this->get_quality_from_nominal_bitrate($info['ogg']['bitrate_nominal']);
- }
- }
- if (empty($info['audio']['encoder_options']) && !empty($info['ogg']['bitrate_nominal'])) {
- $info['audio']['encoder_options'] = 'Nominal bitrate: '.intval(round($info['ogg']['bitrate_nominal'] / 1000)).'kbps';
- }
- }
- }
- return true;
- }
- function ParseVorbisPageHeader(&$filedata, &$filedataoffset, &$oggpageinfo) {
- $info = &$this->getid3->info;
- $info['audio']['dataformat'] = 'vorbis';
- $info['audio']['lossless'] = false;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, $filedataoffset, 6); // hard-coded to 'vorbis'
- $filedataoffset += 6;
- $info['ogg']['bitstreamversion'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['numberofchannels'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $info['audio']['channels'] = $info['ogg']['numberofchannels'];
- $info['ogg']['samplerate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- if ($info['ogg']['samplerate'] == 0) {
- $info['error'][] = 'Corrupt Ogg file: sample rate == zero';
- return false;
- }
- $info['audio']['sample_rate'] = $info['ogg']['samplerate'];
- $info['ogg']['samples'] = 0; // filled in later
- $info['ogg']['bitrate_average'] = 0; // filled in later
- $info['ogg']['bitrate_max'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['bitrate_nominal'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['bitrate_min'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $info['ogg']['blocksize_small'] = pow(2, getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0x0F);
- $info['ogg']['blocksize_large'] = pow(2, (getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0xF0) >> 4);
- $info['ogg']['stop_bit'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)); // must be 1, marks end of packet
- $info['audio']['bitrate_mode'] = 'vbr'; // overridden if actually abr
- if ($info['ogg']['bitrate_max'] == 0xFFFFFFFF) {
- unset($info['ogg']['bitrate_max']);
- $info['audio']['bitrate_mode'] = 'abr';
- }
- if ($info['ogg']['bitrate_nominal'] == 0xFFFFFFFF) {
- unset($info['ogg']['bitrate_nominal']);
- }
- if ($info['ogg']['bitrate_min'] == 0xFFFFFFFF) {
- unset($info['ogg']['bitrate_min']);
- $info['audio']['bitrate_mode'] = 'abr';
- }
- return true;
- }
- function ParseOggPageHeader() {
- // http://xiph.org/ogg/vorbis/doc/framing.html
- $oggheader['page_start_offset'] = ftell($this->getid3->fp); // where we started from in the file
- //echo $oggheader['page_start_offset'].'<br>';
- $filedata = fread($this->getid3->fp, $this->getid3->fread_buffer_size());
- $filedataoffset = 0;
- while ((substr($filedata, $filedataoffset++, 4) != 'OggS')) {
- if ((ftell($this->getid3->fp) - $oggheader['page_start_offset']) >= $this->getid3->fread_buffer_size()) {
- // should be found before here
- return false;
- }
- if ((($filedataoffset + 28) > strlen($filedata)) || (strlen($filedata) < 28)) {
- if (feof($this->getid3->fp) || (($filedata .= fread($this->getid3->fp, $this->getid3->fread_buffer_size())) === false)) {
- // get some more data, unless eof, in which case fail
- echo __LINE__.'<br>';
- return false;
- }
- }
- }
- $filedataoffset += strlen('OggS') - 1; // page, delimited by 'OggS'
- $oggheader['stream_structver'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $oggheader['flags_raw'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $oggheader['flags']['fresh'] = (bool) ($oggheader['flags_raw'] & 0x01); // fresh packet
- $oggheader['flags']['bos'] = (bool) ($oggheader['flags_raw'] & 0x02); // first page of logical bitstream (bos)
- $oggheader['flags']['eos'] = (bool) ($oggheader['flags_raw'] & 0x04); // last page of logical bitstream (eos)
- $oggheader['pcm_abs_position'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 8));
- $filedataoffset += 8;
- $oggheader['stream_serialno'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $oggheader['page_seqno'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $oggheader['page_checksum'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4));
- $filedataoffset += 4;
- $oggheader['page_segments'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $oggheader['page_length'] = 0;
- for ($i = 0; $i < $oggheader['page_segments']; $i++) {
- $oggheader['segment_table'][$i] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1));
- $filedataoffset += 1;
- $oggheader['page_length'] += $oggheader['segment_table'][$i];
- }
- $oggheader['header_end_offset'] = $oggheader['page_start_offset'] + $filedataoffset;
- $oggheader['page_end_offset'] = $oggheader['header_end_offset'] + $oggheader['page_length'];
- fseek($this->getid3->fp, $oggheader['header_end_offset'], SEEK_SET);
- return $oggheader;
- }
- function ParseVorbisCommentsFilepointer() {
- $info = &$this->getid3->info;
- $OriginalOffset = ftell($this->getid3->fp);
- $commentdataoffset = 0;
- $VorbisCommentPage = 1;
- switch ($info['audio']['dataformat']) {
- case 'vorbis':
- $CommentStartOffset = $info['ogg']['pageheader'][$VorbisCommentPage]['page_start_offset']; // Second Ogg page, after header block
- fseek($this->getid3->fp, $CommentStartOffset, SEEK_SET);
- $commentdataoffset = 27 + $info['ogg']['pageheader'][$VorbisCommentPage]['page_segments'];
- $commentdata = fread($this->getid3->fp, getid3_ogg::OggPageSegmentLength($info['ogg']['pageheader'][$VorbisCommentPage], 1) + $commentdataoffset);
- $commentdataoffset += (strlen('vorbis') + 1);
- break;
- case 'flac':
- $CommentStartOffset = $info['flac']['VORBIS_COMMENT']['raw']['offset'] + 4;
- fseek($this->getid3->fp, $CommentStartOffset, SEEK_SET);
- $commentdata = fread($this->getid3->fp, $info['flac']['VORBIS_COMMENT']['raw']['block_length']);
- break;
- case 'speex':
- $CommentStartOffset = $info['ogg']['pageheader'][$VorbisCommentPage]['page_start_offset']; // Second Ogg page, after header block
- fseek($this->getid3->fp, $CommentStartOffset, SEEK_SET);
- $commentdataoffset = 27 + $info['ogg']['pageheader'][$VorbisCommentPage]['page_segments'];
- $commentdata = fread($this->getid3->fp, getid3_ogg::OggPageSegmentLength($info['ogg']['pageheader'][$VorbisCommentPage], 1) + $commentdataoffset);
- break;
- default:
- return false;
- break;
- }
- $VendorSize = getid3_lib::LittleEndian2Int(substr($commentdata, $commentdataoffset, 4));
- $commentdataoffset += 4;
- $info['ogg']['vendor'] = substr($commentdata, $commentdataoffset, $VendorSize);
- $commentdataoffset += $VendorSize;
- $CommentsCount = getid3_lib::LittleEndian2Int(substr($commentdata, $commentdataoffset, 4));
- $commentdataoffset += 4;
- $info['avdataoffset'] = $CommentStartOffset + $commentdataoffset;
- $basicfields = array('TITLE', 'ARTIST', 'ALBUM', 'TRACKNUMBER', 'GENRE', 'DATE', 'DESCRIPTION', 'COMMENT');
- $ThisFileInfo_ogg_comments_raw = &$info['ogg']['comments_raw'];
- for ($i = 0; $i < $CommentsCount; $i++) {
- //echo $i.' :: '.$CommentStartOffset.' + '.$commentdataoffset.' = '.($CommentStartOffset + $commentdataoffset).'<br>';
- $ThisFileInfo_ogg_comments_raw[$i]['dataoffset'] = $CommentStartOffset + $commentdataoffset;
- if (ftell($this->getid3->fp) < ($ThisFileInfo_ogg_comments_raw[$i]['dataoffset'] + 4)) {
- if ($oggpageinfo = $this->ParseOggPageHeader()) {
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
- $VorbisCommentPage++;
- // First, save what we haven't read yet
- $AsYetUnusedData = substr($commentdata, $commentdataoffset);
- // Then take that data off the end
- $commentdata = substr($commentdata, 0, $commentdataoffset);
- // Add [headerlength] bytes of dummy data for the Ogg Page Header, just to keep absolute offsets correct
- $commentdata .= str_repeat("\x00", 27 + $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
- $commentdataoffset += (27 + $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
- // Finally, stick the unused data back on the end
- $commentdata .= $AsYetUnusedData;
- //$commentdata .= fread($this->getid3->fp, $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);
- $commentdata .= fread($this->getid3->fp, $this->OggPageSegmentLength($info['ogg']['pageheader'][$VorbisCommentPage], 1));
- }
- }
- $ThisFileInfo_ogg_comments_raw[$i]['size'] = getid3_lib::LittleEndian2Int(substr($commentdata, $commentdataoffset, 4));
- // replace avdataoffset with position just after the last vorbiscomment
- $info['avdataoffset'] = $ThisFileInfo_ogg_comments_raw[$i]['dataoffset'] + $ThisFileInfo_ogg_comments_raw[$i]['size'] + 4;
- $commentdataoffset += 4;
- while ((strlen($commentdata) - $commentdataoffset) < $ThisFileInfo_ogg_comments_raw[$i]['size']) {
- if (($ThisFileInfo_ogg_comments_raw[$i]['size'] > $info['avdataend']) || ($ThisFileInfo_ogg_comments_raw[$i]['size'] < 0)) {
- $info['warning'][] = 'Invalid Ogg comment size (comment #'.$i.', claims to be '.number_format($ThisFileInfo_ogg_comments_raw[$i]['size']).' bytes) - aborting reading comments';
- break 2;
- }
- $VorbisCommentPage++;
- $oggpageinfo = $this->ParseOggPageHeader();
- $info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
- // First, save what we haven't read yet
- $AsYetUnusedData = substr($commentdata, $commentdataoffset);
- // Then take that data off the end
- $commentdata = substr($commentdata, 0, $commentdataoffset);
- // Add [headerlength] bytes of dummy data for the Ogg Page Header, just to keep absolute offsets correct
- $commentdata .= str_repeat("\x00", 27 + $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
- $commentdataoffset += (27 + $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
- // Finally, stick the unused data back on the end
- $commentdata .= $AsYetUnusedData;
- //$commentdata .= fread($this->getid3->fp, $info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);
- if (!isset($info['ogg']['pageheader'][$VorbisCommentPage])) {
- $info['warning'][] = 'undefined Vorbis Comment page "'.$VorbisCommentPage.'" at offset '.ftell($this->getid3->fp);
- break;
- }
- $readlength = getid3_ogg::OggPageSegmentLength($info['ogg']['pageheader'][$VorbisCommentPage], 1);
- if ($readlength <= 0) {
- $info['warning'][] = 'invalid length Vorbis Comment page "'.$VorbisCommentPage.'" at offset '.ftell($this->getid3->fp);
- break;
- }
- $commentdata .= fread($this->getid3->fp, $readlength);
- //$filebaseoffset += $oggpageinfo['header_end_offset'] - $oggpageinfo['page_start_offset'];
- }
- $ThisFileInfo_ogg_comments_raw[$i]['offset'] = $commentdataoffset;
- $commentstring = substr($commentdata, $commentdataoffset, $ThisFileInfo_ogg_comments_raw[$i]['size']);
- $commentdataoffset += $ThisFileInfo_ogg_comments_raw[$i]['size'];
- if (!$commentstring) {
- // no comment?
- $info['warning'][] = 'Blank Ogg comment ['.$i.']';
- } elseif (strstr($commentstring, '=')) {
- $commentexploded = explode('=', $commentstring, 2);
- $ThisFileInfo_ogg_comments_raw[$i]['key'] = strtoupper($commentexploded[0]);
- $ThisFileInfo_ogg_comments_raw[$i]['value'] = (isset($commentexploded[1]) ? $commentexploded[1] : '');
- $ThisFileInfo_ogg_comments_raw[$i]['data'] = base64_decode($ThisFileInfo_ogg_comments_raw[$i]['value']);
- $ThisFileInfo_ogg_comments_raw[$i]['data_length'] = strlen($ThisFileInfo_ogg_comments_raw[$i]['data']);
- if (preg_match('#^(BM|GIF|\xFF\xD8\xFF|\x89\x50\x4E\x47\x0D\x0A\x1A\x0A|II\x2A\x00|MM\x00\x2A)#s', $ThisFileInfo_ogg_comments_raw[$i]['data'])) {
- $imageinfo = array();
- $imagechunkcheck = getid3_lib::GetDataImageSize($ThisFileInfo_ogg_comments_raw[$i]['data'], $imageinfo);
- unset($imageinfo);
- if (!empty($imagechunkcheck)) {
- $ThisFileInfo_ogg_comments_raw[$i]['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]);
- if ($ThisFileInfo_ogg_comments_raw[$i]['image_mime'] && ($ThisFileInfo_ogg_comments_raw[$i]['image_mime'] != 'application/octet-stream')) {
- unset($ThisFileInfo_ogg_comments_raw[$i]['value']);
- }
- }
- }
- if (isset($ThisFileInfo_ogg_comments_raw[$i]['value'])) {
- unset($ThisFileInfo_ogg_comments_raw[$i]['data']);
- $info['ogg']['comments'][strtolower($ThisFileInfo_ogg_comments_raw[$i]['key'])][] = $ThisFileInfo_ogg_comments_raw[$i]['value'];
- } else {
- do {
- if ($this->inline_attachments === false) {
- // skip entirely
- unset($ThisFileInfo_ogg_comments_raw[$i]['data']);
- break;
- }
- if ($this->inline_attachments === true) {
- // great
- } elseif (is_int($this->inline_attachments)) {
- if ($this->inline_attachments < $ThisFileInfo_ogg_comments_raw[$i]['data_length']) {
- // too big, skip
- $info['warning'][] = 'attachment at '.$ThisFileInfo_ogg_comments_raw[$i]['offset'].' is too large to process inline ('.number_format($ThisFileInfo_ogg_comments_raw[$i]['data_length']).' bytes)';
- unset($ThisFileInfo_ogg_comments_raw[$i]['data']);
- break;
- }
- } elseif (is_string($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
- $info['warning'][] = 'attachment at '.$ThisFileInfo_ogg_comments_raw[$i]['offset'].' cannot be saved to "'.$this->inline_attachments.'" (not writable)';
- unset($ThisFileInfo_ogg_comments_raw[$i]['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']).'_'.$ThisFileInfo_ogg_comments_raw[$i]['offset'];
- if (!file_exists($destination_filename) || is_writable($destination_filename)) {
- file_put_contents($destination_filename, $ThisFileInfo_ogg_comments_raw[$i]['data']);
- } else {
- $info['warning'][] = 'attachment at '.$ThisFileInfo_ogg_comments_raw[$i]['offset'].' cannot be saved to "'.$destination_filename.'" (not writable)';
- }
- $ThisFileInfo_ogg_comments_raw[$i]['data_filename'] = $destination_filename;
- unset($ThisFileInfo_ogg_comments_raw[$i]['data']);
- } else {
- $info['ogg']['comments']['picture'][] = array('data'=>$ThisFileInfo_ogg_comments_raw[$i]['data'], 'image_mime'=>$ThisFileInfo_ogg_comments_raw[$i]['image_mime']);
- }
- } while (false);
- }
- } else {
- $info['warning'][] = '[known problem with CDex >= v1.40, < v1.50b7] Invalid Ogg comment name/value pair ['.$i.']: '.$commentstring;
- }
- }
- // Replay Gain Adjustment
- // http://privatewww.essex.ac.uk/~djmrob/replaygain/
- if (isset($info['ogg']['comments']) && is_array($info['ogg']['comments'])) {
- foreach ($info['ogg']['comments'] as $index => $commentvalue) {
- switch ($index) {
- case 'rg_audiophile':
- case 'replaygain_album_gain':
- $info['replay_gain']['album']['adjustment'] = (double) $commentvalue[0];
- unset($info['ogg']['comments'][$index]);
- break;
- case 'rg_radio':
- case 'replaygain_track_gain':
- $info['replay_gain']['track']['adjustment'] = (double) $commentvalue[0];
- unset($info['ogg']['comments'][$index]);
- break;
- case 'replaygain_album_peak':
- $info['replay_gain']['album']['peak'] = (double) $commentvalue[0];
- unset($info['ogg']['comments'][$index]);
- break;
- case 'rg_peak':
- case 'replaygain_track_peak':
- $info['replay_gain']['track']['peak'] = (double) $commentvalue[0];
- unset($info['ogg']['comments'][$index]);
- break;
- case 'replaygain_reference_loudness':
- $info['replay_gain']['reference_volume'] = (double) $commentvalue[0];
- unset($info['ogg']['comments'][$index]);
- break;
- default:
- // do nothing
- break;
- }
- }
- }
- fseek($this->getid3->fp, $OriginalOffset, SEEK_SET);
- return true;
- }
- static function SpeexBandModeLookup($mode) {
- static $SpeexBandModeLookup = array();
- if (empty($SpeexBandModeLookup)) {
- $SpeexBandModeLookup[0] = 'narrow';
- $SpeexBandModeLookup[1] = 'wide';
- $SpeexBandModeLookup[2] = 'ultra-wide';
- }
- return (isset($SpeexBandModeLookup[$mode]) ? $SpeexBandModeLookup[$mode] : null);
- }
- static function OggPageSegmentLength($OggInfoArray, $SegmentNumber=1) {
- for ($i = 0; $i < $SegmentNumber; $i++) {
- $segmentlength = 0;
- foreach ($OggInfoArray['segment_table'] as $key => $value) {
- $segmentlength += $value;
- if ($value < 255) {
- break;
- }
- }
- }
- return $segmentlength;
- }
- static function get_quality_from_nominal_bitrate($nominal_bitrate) {
- // decrease precision
- $nominal_bitrate = $nominal_bitrate / 1000;
- if ($nominal_bitrate < 128) {
- // q-1 to q4
- $qval = ($nominal_bitrate - 64) / 16;
- } elseif ($nominal_bitrate < 256) {
- // q4 to q8
- $qval = $nominal_bitrate / 32;
- } elseif ($nominal_bitrate < 320) {
- // q8 to q9
- $qval = ($nominal_bitrate + 256) / 64;
- } else {
- // q9 to q10
- $qval = ($nominal_bitrate + 1300) / 180;
- }
- //return $qval; // 5.031324
- //return intval($qval); // 5
- return round($qval, 1); // 5 or 4.9
- }
- }
- ?>