493 lines
22 KiB
PHP
493 lines
22 KiB
PHP
<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <getid3@users.sourceforge.net> //
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// available at http://getid3.sourceforge.net ///
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/////////////////////////////////////////////////////////////////
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// //
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// getid3.ogg.php - part of getID3() //
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// See getid3.readme.txt for more details //
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// //
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/////////////////////////////////////////////////////////////////
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function getOggHeaderFilepointer(&$fd, &$ThisFileInfo) {
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$ThisFileInfo['fileformat'] = 'ogg';
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// Warn about illegal tags - only vorbiscomments are allowed
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if (isset($ThisFileInfo['id3v2'])) {
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$ThisFileInfo['warning'] .= "\n".'Illegal ID3v2 tag present.';
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}
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if (isset($ThisFileInfo['id3v1'])) {
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$ThisFileInfo['warning'] .= "\n".'Illegal ID3v1 tag present.';
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}
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if (isset($ThisFileInfo['ape'])) {
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$ThisFileInfo['warning'] .= "\n".'Illegal APE tag present.';
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}
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// Page 1 - Stream Header
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fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
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$oggpageinfo = ParseOggPageHeader($fd);
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
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if (ftell($fd) >= FREAD_BUFFER_SIZE) {
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$ThisFileInfo['error'] .= "\n".'Could not find start of Ogg page in the first '.FREAD_BUFFER_SIZE.' bytes (this might not be an Ogg-Vorbis file?)';
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unset($ThisFileInfo['fileformat']);
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unset($ThisFileInfo['ogg']);
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return false;
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}
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$filedata = fread($fd, $oggpageinfo['page_length']);
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$filedataoffset = 0;
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if (substr($filedata, 0, 4) == 'fLaC') {
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$ThisFileInfo['audio']['dataformat'] = 'flac';
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$ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
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} elseif (substr($filedata, 1, 6) == 'vorbis') {
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$ThisFileInfo['audio']['dataformat'] = 'vorbis';
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
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$filedataoffset += 1;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, $filedataoffset, 6); // hard-coded to 'vorbis'
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$filedataoffset += 6;
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$ThisFileInfo['ogg']['bitstreamversion'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['numberofchannels'] = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
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$filedataoffset += 1;
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$ThisFileInfo['audio']['channels'] = $ThisFileInfo['ogg']['numberofchannels'];
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$ThisFileInfo['ogg']['samplerate'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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if ($ThisFileInfo['ogg']['samplerate'] == 0) {
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$ThisFileInfo['error'] .= "\n".'Corrupt Ogg file: sample rate == zero';
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return false;
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}
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$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['ogg']['samplerate'];
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$ThisFileInfo['ogg']['samples'] = 0; // filled in later
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$ThisFileInfo['ogg']['bitrate_average'] = 0; // filled in later
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$ThisFileInfo['ogg']['bitrate_max'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['bitrate_nominal'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['bitrate_min'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['blocksize_small'] = pow(2, LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0x0F);
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$ThisFileInfo['ogg']['blocksize_large'] = pow(2, (LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0xF0) >> 4);
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$ThisFileInfo['ogg']['stop_bit'] = LittleEndian2Int(substr($filedata, $filedataoffset, 1)); // must be 1, marks end of packet
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$ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; // overridden if actually abr
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if ($ThisFileInfo['ogg']['bitrate_max'] == 0xFFFFFFFF) {
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unset($ThisFileInfo['ogg']['bitrate_max']);
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$ThisFileInfo['audio']['bitrate_mode'] = 'abr';
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}
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if ($ThisFileInfo['ogg']['bitrate_nominal'] == 0xFFFFFFFF) {
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unset($ThisFileInfo['ogg']['bitrate_nominal']);
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}
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if ($ThisFileInfo['ogg']['bitrate_min'] == 0xFFFFFFFF) {
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unset($ThisFileInfo['ogg']['bitrate_min']);
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$ThisFileInfo['audio']['bitrate_mode'] = 'abr';
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}
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} elseif (substr($filedata, 0, 8) == 'Speex ') {
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// http://www.speex.org/manual/node10.html
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$ThisFileInfo['audio']['dataformat'] = 'speex';
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$ThisFileInfo['mime_type'] = 'audio/speex';
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$ThisFileInfo['audio']['bitrate_mode'] = 'abr';
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_string'] = substr($filedata, $filedataoffset, 8); // hard-coded to 'Speex '
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$filedataoffset += 8;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version'] = substr($filedata, $filedataoffset, 20);
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$filedataoffset += 20;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version_id'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['header_size'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode_bitstream_version'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['bitrate'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['framesize'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['frames_per_packet'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['extra_headers'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved1'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved2'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$ThisFileInfo['speex']['speex_version'] = trim($ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version']);
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$ThisFileInfo['speex']['sample_rate'] = $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'];
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$ThisFileInfo['speex']['channels'] = $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'];
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$ThisFileInfo['speex']['vbr'] = (bool) $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'];
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$ThisFileInfo['speex']['band_type'] = SpeexBandModeLookup($ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode']);
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$ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['speex']['sample_rate'];
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$ThisFileInfo['audio']['channels'] = $ThisFileInfo['speex']['channels'];
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if ($ThisFileInfo['speex']['vbr']) {
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$ThisFileInfo['audio']['bitrate_mode'] = 'vbr';
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}
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} else {
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$ThisFileInfo['error'] .= "\n".'Expecting either "Speex " or "vorbis" identifier strings, found neither';
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unset($ThisFileInfo['ogg']);
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unset($ThisFileInfo['mime_type']);
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return false;
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}
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// Page 2 - Comment Header
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$oggpageinfo = ParseOggPageHeader($fd);
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
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switch ($ThisFileInfo['audio']['dataformat']) {
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case 'vorbis':
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$filedata = fread($fd, $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = LittleEndian2Int(substr($filedata, 0, 1));
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, 1, 6); // hard-coded to 'vorbis'
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ParseVorbisCommentsFilepointer($fd, $ThisFileInfo);
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break;
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case 'flac':
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require_once(GETID3_INCLUDEPATH.'getid3.flac.php');
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if (!FLACparseMETAdata($fd, $ThisFileInfo)) {
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$ThisFileInfo['error'] .= "\n".'Failed to parse FLAC headers';
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return false;
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}
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break;
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case 'speex':
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fseek($fd, $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length'], SEEK_CUR);
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ParseVorbisCommentsFilepointer($fd, $ThisFileInfo);
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break;
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}
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// Last Page - Number of Samples
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fseek($fd, max($ThisFileInfo['avdataend'] - FREAD_BUFFER_SIZE, 0), SEEK_SET);
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$LastChunkOfOgg = strrev(fread($fd, FREAD_BUFFER_SIZE));
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if ($LastOggSpostion = strpos($LastChunkOfOgg, 'SggO')) {
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fseek($fd, 0 - ($LastOggSpostion + strlen('SggO')), SEEK_END);
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$ThisFileInfo['avdataend'] = ftell($fd);
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$ThisFileInfo['ogg']['pageheader']['eos'] = ParseOggPageHeader($fd);
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$ThisFileInfo['ogg']['samples'] = $ThisFileInfo['ogg']['pageheader']['eos']['pcm_abs_position'];
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if ($ThisFileInfo['ogg']['samples'] == 0) {
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$ThisFileInfo['error'] .= "\n".'Corrupt Ogg file: eos.number of samples == zero';
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return false;
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}
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$ThisFileInfo['ogg']['bitrate_average'] = (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / ($ThisFileInfo['ogg']['samples'] / $ThisFileInfo['audio']['sample_rate']);
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}
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if (isset($ThisFileInfo['ogg']['bitrate_average']) && ($ThisFileInfo['ogg']['bitrate_average'] > 0)) {
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$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['ogg']['bitrate_average'];
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} elseif (isset($ThisFileInfo['ogg']['bitrate_nominal']) && ($ThisFileInfo['ogg']['bitrate_nominal'] > 0)) {
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$ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['ogg']['bitrate_nominal'];
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} elseif (isset($ThisFileInfo['ogg']['bitrate_min']) && isset($ThisFileInfo['ogg']['bitrate_max'])) {
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$ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['ogg']['bitrate_min'] + $ThisFileInfo['ogg']['bitrate_max']) / 2;
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}
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if (isset($ThisFileInfo['audio']['bitrate']) && !isset($ThisFileInfo['playtime_seconds'])) {
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if ($ThisFileInfo['audio']['bitrate'] == 0) {
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$ThisFileInfo['error'] .= "\n".'Corrupt Ogg file: bitrate_audio == zero';
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return false;
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}
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$ThisFileInfo['playtime_seconds'] = (float) ((($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8) / $ThisFileInfo['audio']['bitrate']);
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}
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if (isset($ThisFileInfo['ogg']['vendor'])) {
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$ThisFileInfo['audio']['encoder'] = preg_replace('/^Encoded with /', '', $ThisFileInfo['ogg']['vendor']);
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}
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return true;
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}
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function ParseOggPageHeader(&$fd) {
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// http://xiph.org/ogg/vorbis/doc/framing.html
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$oggheader['page_start_offset'] = ftell($fd); // where we started from in the file
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$filedata = fread($fd, FREAD_BUFFER_SIZE);
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$filedataoffset = 0;
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while ((substr($filedata, $filedataoffset++, 4) != 'OggS')) {
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if ((ftell($fd) - $oggheader['page_start_offset']) >= FREAD_BUFFER_SIZE) {
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// should be found before here
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return false;
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}
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if (strlen($filedata) < 1024) {
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if (feof($fd) || (($filedata .= fread($fd, FREAD_BUFFER_SIZE)) === false)) {
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// get some more data, unless eof, in which case fail
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return false;
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}
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}
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}
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$filedataoffset += strlen('OggS') - 1; // page, delimited by 'OggS'
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$oggheader['stream_structver'] = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
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$filedataoffset += 1;
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$oggheader['flags_raw'] = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
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$filedataoffset += 1;
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$oggheader['flags']['fresh'] = (bool) ($oggheader['flags_raw'] & 0x01); // fresh packet
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$oggheader['flags']['bos'] = (bool) ($oggheader['flags_raw'] & 0x02); // first page of logical bitstream (bos)
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$oggheader['flags']['eos'] = (bool) ($oggheader['flags_raw'] & 0x04); // last page of logical bitstream (eos)
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$oggheader['pcm_abs_position'] = LittleEndian2Int(substr($filedata, $filedataoffset, 8));
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$filedataoffset += 8;
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$oggheader['stream_serialno'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$oggheader['page_seqno'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$oggheader['page_checksum'] = LittleEndian2Int(substr($filedata, $filedataoffset, 4));
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$filedataoffset += 4;
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$oggheader['page_segments'] = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
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$filedataoffset += 1;
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$oggheader['page_length'] = 0;
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for ($i = 0; $i < $oggheader['page_segments']; $i++) {
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$oggheader['segment_table'][$i] = LittleEndian2Int(substr($filedata, $filedataoffset, 1));
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$filedataoffset += 1;
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$oggheader['page_length'] += $oggheader['segment_table'][$i];
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}
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$oggheader['header_end_offset'] = $oggheader['page_start_offset'] + $filedataoffset;
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$oggheader['page_end_offset'] = $oggheader['header_end_offset'] + $oggheader['page_length'];
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fseek($fd, $oggheader['header_end_offset'], SEEK_SET);
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return $oggheader;
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}
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function ParseVorbisCommentsFilepointer(&$fd, &$ThisFileInfo) {
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$OriginalOffset = ftell($fd);
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$CommentStartOffset = $OriginalOffset;
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$commentdataoffset = 0;
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$VorbisCommentPage = 1;
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switch ($ThisFileInfo['audio']['dataformat']) {
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case 'vorbis':
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$CommentStartOffset = $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_start_offset']; // Second Ogg page, after header block
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fseek($fd, $CommentStartOffset, SEEK_SET);
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$commentdataoffset = 27 + $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_segments'];
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$commentdata = fread($fd, OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1) + $commentdataoffset);
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$commentdataoffset += (strlen('vorbis') + 1);
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break;
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case 'flac':
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fseek($fd, $ThisFileInfo['flac']['VORBIS_COMMENT']['raw']['offset'] + 4, SEEK_SET);
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$commentdata = fread($fd, $ThisFileInfo['flac']['VORBIS_COMMENT']['raw']['block_length']);
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break;
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case 'speex':
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$CommentStartOffset = $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_start_offset']; // Second Ogg page, after header block
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fseek($fd, $CommentStartOffset, SEEK_SET);
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$commentdataoffset = 27 + $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_segments'];
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$commentdata = fread($fd, OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1) + $commentdataoffset);
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break;
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default:
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return false;
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break;
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}
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$VendorSize = LittleEndian2Int(substr($commentdata, $commentdataoffset, 4));
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$commentdataoffset += 4;
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$ThisFileInfo['ogg']['vendor'] = substr($commentdata, $commentdataoffset, $VendorSize);
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$commentdataoffset += $VendorSize;
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$CommentsCount = LittleEndian2Int(substr($commentdata, $commentdataoffset, 4));
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$commentdataoffset += 4;
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$ThisFileInfo['avdataoffset'] = $CommentStartOffset + $commentdataoffset;
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$basicfields = array('TITLE', 'ARTIST', 'ALBUM', 'TRACKNUMBER', 'GENRE', 'DATE', 'DESCRIPTION', 'COMMENT');
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for ($i = 0; $i < $CommentsCount; $i++) {
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$ThisFileInfo['ogg']['comments_raw'][$i]['dataoffset'] = $CommentStartOffset + $commentdataoffset;
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if (ftell($fd) < ($ThisFileInfo['ogg']['comments_raw'][$i]['dataoffset'] + 4)) {
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$VorbisCommentPage++;
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$oggpageinfo = ParseOggPageHeader($fd);
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
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// First, save what we haven't read yet
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$AsYetUnusedData = substr($commentdata, $commentdataoffset);
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// Then take that data off the end
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$commentdata = substr($commentdata, 0, $commentdataoffset);
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// Add [headerlength] bytes of dummy data for the Ogg Page Header, just to keep absolute offsets correct
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$commentdata .= str_repeat(chr(0), 27 + $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
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$commentdataoffset += (27 + $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
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// Finally, stick the unused data back on the end
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$commentdata .= $AsYetUnusedData;
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//$commentdata .= fread($fd, $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);
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$commentdata .= fread($fd, OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1));
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}
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$ThisFileInfo['ogg']['comments_raw'][$i]['size'] = LittleEndian2Int(substr($commentdata, $commentdataoffset, 4));
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// replace avdataoffset with position just after the last vorbiscomment
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$ThisFileInfo['avdataoffset'] = $ThisFileInfo['ogg']['comments_raw'][$i]['dataoffset'] + $ThisFileInfo['ogg']['comments_raw'][$i]['size'] + 4;
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$commentdataoffset += 4;
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while ((strlen($commentdata) - $commentdataoffset) < $ThisFileInfo['ogg']['comments_raw'][$i]['size']) {
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if (($ThisFileInfo['ogg']['comments_raw'][$i]['size'] > $ThisFileInfo['avdataend']) || ($ThisFileInfo['ogg']['comments_raw'][$i]['size'] < 0)) {
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$ThisFileInfo['error'] .= "\n".'Invalid Ogg comment size (comment #'.$i.', claims to be '.number_format($ThisFileInfo['ogg']['comments_raw'][$i]['size']).' bytes) - aborting reading comments';
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break 2;
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}
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$VorbisCommentPage++;
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$oggpageinfo = ParseOggPageHeader($fd);
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$ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo;
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// First, save what we haven't read yet
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$AsYetUnusedData = substr($commentdata, $commentdataoffset);
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// 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(chr(0), 27 + $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
|
|
$commentdataoffset += (27 + $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_segments']);
|
|
|
|
// Finally, stick the unused data back on the end
|
|
$commentdata .= $AsYetUnusedData;
|
|
|
|
//$commentdata .= fread($fd, $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']);
|
|
$commentdata .= fread($fd, OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1));
|
|
|
|
//$filebaseoffset += $oggpageinfo['header_end_offset'] - $oggpageinfo['page_start_offset'];
|
|
}
|
|
$commentstring = substr($commentdata, $commentdataoffset, $ThisFileInfo['ogg']['comments_raw'][$i]['size']);
|
|
$commentdataoffset += $ThisFileInfo['ogg']['comments_raw'][$i]['size'];
|
|
|
|
if (!$commentstring) {
|
|
|
|
// no comment?
|
|
$ThisFileInfo['warning'] .= "\n".'Blank Ogg comment ['.$i.']';
|
|
|
|
} elseif (strstr($commentstring, '=')) {
|
|
|
|
$commentexploded = explode('=', $commentstring, 2);
|
|
$ThisFileInfo['ogg']['comments_raw'][$i]['key'] = strtoupper($commentexploded[0]);
|
|
$ThisFileInfo['ogg']['comments_raw'][$i]['value'] = ($commentexploded[1] ? utf8_decode($commentexploded[1]) : '');
|
|
$ThisFileInfo['ogg']['comments_raw'][$i]['data'] = base64_decode($ThisFileInfo['ogg']['comments_raw'][$i]['value']);
|
|
|
|
$ThisFileInfo['ogg']['comments'][strtolower($ThisFileInfo['ogg']['comments_raw'][$i]['key'])][] = $ThisFileInfo['ogg']['comments_raw'][$i]['value'];
|
|
|
|
require_once(GETID3_INCLUDEPATH.'getid3.getimagesize.php');
|
|
$imagechunkcheck = GetDataImageSize($ThisFileInfo['ogg']['comments_raw'][$i]['data']);
|
|
$ThisFileInfo['ogg']['comments_raw'][$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'][$i]['image_mime']);
|
|
unset($ThisFileInfo['ogg']['comments_raw'][$i]['data']);
|
|
}
|
|
|
|
} else {
|
|
|
|
$ThisFileInfo['warning'] .= "\n".'[known problem with CDex >= v1.40, < v1.50b7] Invalid Ogg comment name/value pair ['.$i.']: '.$commentstring;
|
|
|
|
}
|
|
}
|
|
|
|
|
|
// Check for presence of vorbiscomments
|
|
if (isset($ThisFileInfo['ogg']['comments'])) {
|
|
$ThisFileInfo['tags'][] = 'vorbiscomment';
|
|
|
|
// Yank other comments - vorbiscomments has highest preference
|
|
if (isset($ThisFileInfo['ogg']['comments'])) {
|
|
CopyFormatCommentsToRootComments($ThisFileInfo['ogg']['comments'], $ThisFileInfo, true, true, true);
|
|
}
|
|
|
|
}
|
|
|
|
|
|
// Replay Gain Adjustment
|
|
// http://privatewww.essex.ac.uk/~djmrob/replaygain/
|
|
if (isset($ThisFileInfo['ogg']['comments']) && is_array($ThisFileInfo['ogg']['comments'])) {
|
|
foreach ($ThisFileInfo['ogg']['comments'] as $index => $keyvaluepair) {
|
|
if (isset($keyvaluepair['key'])) {
|
|
switch ($keyvaluepair['key']) {
|
|
case 'RG_AUDIOPHILE':
|
|
case 'REPLAYGAIN_ALBUM_GAIN':
|
|
$ThisFileInfo['replay_gain']['audiophile']['adjustment'] = (double) $keyvaluepair['value'];
|
|
break;
|
|
|
|
case 'RG_RADIO':
|
|
case 'REPLAYGAIN_TRACK_GAIN':
|
|
$ThisFileInfo['replay_gain']['radio']['adjustment'] = (double) $keyvaluepair['value'];
|
|
break;
|
|
|
|
case 'REPLAYGAIN_ALBUM_PEAK':
|
|
$ThisFileInfo['replay_gain']['audiophile']['peak'] = (double) $keyvaluepair['value'];
|
|
break;
|
|
|
|
case 'RG_PEAK':
|
|
case 'REPLAYGAIN_TRACK_PEAK':
|
|
$ThisFileInfo['replay_gain']['radio']['peak'] = (double) $keyvaluepair['value'];
|
|
break;
|
|
|
|
|
|
default:
|
|
// do nothing
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fseek($fd, $OriginalOffset, SEEK_SET);
|
|
|
|
return true;
|
|
}
|
|
|
|
function SpeexBandModeLookup($mode) {
|
|
static $SpeexBandModeLookup = array();
|
|
if (empty($SpeexBandModeLookup)) {
|
|
$SpeexBandModeLookup[0] = 'narrow';
|
|
$SpeexBandModeLookup[1] = 'wide';
|
|
$SpeexBandModeLookup[2] = 'ultra-wide';
|
|
}
|
|
return (isset($SpeexBandModeLookup[$mode]) ? $SpeexBandModeLookup[$mode] : null);
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
?>
|