function getid3_flac(&$fd, &$ThisFileInfo) { // http://flac.sourceforge.net/format.html fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); $StreamMarker = fread($fd, 4); if ($StreamMarker != 'fLaC') { $ThisFileInfo['error'][] = 'Expecting "fLaC" at offset ' . $ThisFileInfo['avdataoffset'] . ', found "' . $StreamMarker . '"'; return false; } $ThisFileInfo['fileformat'] = 'flac'; $ThisFileInfo['audio']['dataformat'] = 'flac'; $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['audio']['lossless'] = false; return getid3_flac::FLACparseMETAdata($fd, $ThisFileInfo); }
function getid3_ogg(&$fd, &$ThisFileInfo) { $ThisFileInfo['fileformat'] = 'ogg'; // Warn about illegal tags - only vorbiscomments are allowed if (isset($ThisFileInfo['id3v2'])) { $ThisFileInfo['warning'][] = 'Illegal ID3v2 tag present.'; } if (isset($ThisFileInfo['id3v1'])) { $ThisFileInfo['warning'][] = 'Illegal ID3v1 tag present.'; } if (isset($ThisFileInfo['ape'])) { $ThisFileInfo['warning'][] = 'Illegal APE tag present.'; } // Page 1 - Stream Header fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); $oggpageinfo = getid3_ogg::ParseOggPageHeader($fd); $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo; if (ftell($fd) >= GETID3_FREAD_BUFFER_SIZE) { $ThisFileInfo['error'][] = 'Could not find start of Ogg page in the first ' . GETID3_FREAD_BUFFER_SIZE . ' bytes (this might not be an Ogg-Vorbis file?)'; unset($ThisFileInfo['fileformat']); unset($ThisFileInfo['ogg']); return false; } $filedata = fread($fd, $oggpageinfo['page_length']); $filedataoffset = 0; if (substr($filedata, 0, 4) == 'fLaC') { $ThisFileInfo['audio']['dataformat'] = 'flac'; $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; $ThisFileInfo['audio']['lossless'] = true; } elseif (substr($filedata, 1, 6) == 'vorbis') { $this->ParseVorbisPageHeader($filedata, $filedataoffset, $ThisFileInfo, $oggpageinfo); } elseif (substr($filedata, 0, 8) == 'Speex ') { // http://www.speex.org/manual/node10.html $ThisFileInfo['audio']['dataformat'] = 'speex'; $ThisFileInfo['mime_type'] = 'audio/speex'; $ThisFileInfo['audio']['bitrate_mode'] = 'abr'; $ThisFileInfo['audio']['lossless'] = false; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_string'] = substr($filedata, $filedataoffset, 8); // hard-coded to 'Speex ' $filedataoffset += 8; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version'] = substr($filedata, $filedataoffset, 20); $filedataoffset += 20; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version_id'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['header_size'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode_bitstream_version'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['bitrate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['framesize'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['frames_per_packet'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['extra_headers'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved1'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['reserved2'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $ThisFileInfo['speex']['speex_version'] = trim($ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['speex_version']); $ThisFileInfo['speex']['sample_rate'] = $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['rate']; $ThisFileInfo['speex']['channels'] = $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['nb_channels']; $ThisFileInfo['speex']['vbr'] = (bool) $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['vbr']; $ThisFileInfo['speex']['band_type'] = getid3_ogg::SpeexBandModeLookup($ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['mode']); $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['speex']['sample_rate']; $ThisFileInfo['audio']['channels'] = $ThisFileInfo['speex']['channels']; if ($ThisFileInfo['speex']['vbr']) { $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; } } else { $ThisFileInfo['error'][] = 'Expecting either "Speex " or "vorbis" identifier strings, found neither'; unset($ThisFileInfo['ogg']); unset($ThisFileInfo['mime_type']); return false; } // Page 2 - Comment Header $oggpageinfo = getid3_ogg::ParseOggPageHeader($fd); $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo; switch ($ThisFileInfo['audio']['dataformat']) { case 'vorbis': $filedata = fread($fd, $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length']); $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($filedata, 0, 1)); $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, 1, 6); // hard-coded to 'vorbis' getid3_ogg::ParseVorbisCommentsFilepointer($fd, $ThisFileInfo); break; case 'flac': if (!getid3_flac::FLACparseMETAdata($fd, $ThisFileInfo)) { $ThisFileInfo['error'][] = 'Failed to parse FLAC headers'; return false; } break; case 'speex': fseek($fd, $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length'], SEEK_CUR); getid3_ogg::ParseVorbisCommentsFilepointer($fd, $ThisFileInfo); break; } // Last Page - Number of Samples if (!getid3_lib::intValueSupported($ThisFileInfo['avdataend'])) { $ThisFileInfo['warning'][] = 'Unable to parse Ogg end chunk file (PHP does not support file operations beyond ' . round(PHP_INT_MAX / 1073741824) . 'GB)'; } else { fseek($fd, max($ThisFileInfo['avdataend'] - GETID3_FREAD_BUFFER_SIZE, 0), SEEK_SET); $LastChunkOfOgg = strrev(fread($fd, GETID3_FREAD_BUFFER_SIZE)); if ($LastOggSpostion = strpos($LastChunkOfOgg, 'SggO')) { fseek($fd, $ThisFileInfo['avdataend'] - ($LastOggSpostion + strlen('SggO')), SEEK_SET); $ThisFileInfo['avdataend'] = ftell($fd); $ThisFileInfo['ogg']['pageheader']['eos'] = getid3_ogg::ParseOggPageHeader($fd); $ThisFileInfo['ogg']['samples'] = $ThisFileInfo['ogg']['pageheader']['eos']['pcm_abs_position']; if ($ThisFileInfo['ogg']['samples'] == 0) { $ThisFileInfo['error'][] = 'Corrupt Ogg file: eos.number of samples == zero'; return false; } $ThisFileInfo['ogg']['bitrate_average'] = ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / ($ThisFileInfo['ogg']['samples'] / $ThisFileInfo['audio']['sample_rate']); } } if (!empty($ThisFileInfo['ogg']['bitrate_average'])) { $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['ogg']['bitrate_average']; } elseif (!empty($ThisFileInfo['ogg']['bitrate_nominal'])) { $ThisFileInfo['audio']['bitrate'] = $ThisFileInfo['ogg']['bitrate_nominal']; } elseif (!empty($ThisFileInfo['ogg']['bitrate_min']) && !empty($ThisFileInfo['ogg']['bitrate_max'])) { $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['ogg']['bitrate_min'] + $ThisFileInfo['ogg']['bitrate_max']) / 2; } if (isset($ThisFileInfo['audio']['bitrate']) && !isset($ThisFileInfo['playtime_seconds'])) { if ($ThisFileInfo['audio']['bitrate'] == 0) { $ThisFileInfo['error'][] = 'Corrupt Ogg file: bitrate_audio == zero'; return false; } $ThisFileInfo['playtime_seconds'] = (double) (($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']) * 8 / $ThisFileInfo['audio']['bitrate']); } if (isset($ThisFileInfo['ogg']['vendor'])) { $ThisFileInfo['audio']['encoder'] = preg_replace('/^Encoded with /', '', $ThisFileInfo['ogg']['vendor']); // Vorbis only if ($ThisFileInfo['audio']['dataformat'] == 'vorbis') { // Vorbis 1.0 starts with Xiph.Org if (preg_match('/^Xiph.Org/', $ThisFileInfo['audio']['encoder'])) { if ($ThisFileInfo['audio']['bitrate_mode'] == 'abr') { // Set -b 128 on abr files $ThisFileInfo['audio']['encoder_options'] = '-b ' . round($ThisFileInfo['ogg']['bitrate_nominal'] / 1000); } elseif ($ThisFileInfo['audio']['bitrate_mode'] == 'vbr' && $ThisFileInfo['audio']['channels'] == 2 && $ThisFileInfo['audio']['sample_rate'] >= 44100 && $ThisFileInfo['audio']['sample_rate'] <= 48000) { // Set -q N on vbr files $ThisFileInfo['audio']['encoder_options'] = '-q ' . $this->get_quality_from_nominal_bitrate($ThisFileInfo['ogg']['bitrate_nominal']); } } if (empty($ThisFileInfo['audio']['encoder_options']) && !empty($ThisFileInfo['ogg']['bitrate_nominal'])) { $ThisFileInfo['audio']['encoder_options'] = 'Nominal bitrate: ' . intval(round($ThisFileInfo['ogg']['bitrate_nominal'] / 1000)) . 'kbps'; } } } return true; }
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") { // 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") { $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"); 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; } $info['playtime_seconds'] = (double) (($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; }