public 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 $this->fseek($info['avdataoffset']); $oggpageinfo = $this->ParseOggPageHeader(); $info['ogg']['pageheader'][$oggpageinfo['page_seqno']] = $oggpageinfo; if ($this->ftell() >= $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 = $this->fread($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, 7) == "€" . 'theora') { // http://www.theora.org/doc/Theora.pdf (section 6.2) $info['ogg']['pageheader']['theora']['theora_magic'] = substr($filedata, $filedataoffset, 7); // hard-coded to "\x80.'theora' $filedataoffset += 7; $info['ogg']['pageheader']['theora']['version_major'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1)); $filedataoffset += 1; $info['ogg']['pageheader']['theora']['version_minor'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1)); $filedataoffset += 1; $info['ogg']['pageheader']['theora']['version_revision'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1)); $filedataoffset += 1; $info['ogg']['pageheader']['theora']['frame_width_macroblocks'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 2)); $filedataoffset += 2; $info['ogg']['pageheader']['theora']['frame_height_macroblocks'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 2)); $filedataoffset += 2; $info['ogg']['pageheader']['theora']['resolution_x'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3)); $filedataoffset += 3; $info['ogg']['pageheader']['theora']['resolution_y'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3)); $filedataoffset += 3; $info['ogg']['pageheader']['theora']['picture_offset_x'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1)); $filedataoffset += 1; $info['ogg']['pageheader']['theora']['picture_offset_y'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1)); $filedataoffset += 1; $info['ogg']['pageheader']['theora']['frame_rate_numerator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $info['ogg']['pageheader']['theora']['frame_rate_denominator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 4)); $filedataoffset += 4; $info['ogg']['pageheader']['theora']['pixel_aspect_numerator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3)); $filedataoffset += 3; $info['ogg']['pageheader']['theora']['pixel_aspect_denominator'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3)); $filedataoffset += 3; $info['ogg']['pageheader']['theora']['color_space_id'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 1)); $filedataoffset += 1; $info['ogg']['pageheader']['theora']['nominal_bitrate'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 3)); $filedataoffset += 3; $info['ogg']['pageheader']['theora']['flags'] = getid3_lib::BigEndian2Int(substr($filedata, $filedataoffset, 2)); $filedataoffset += 2; $info['ogg']['pageheader']['theora']['quality'] = ($info['ogg']['pageheader']['theora']['flags'] & 0xfc00) >> 10; $info['ogg']['pageheader']['theora']['kfg_shift'] = ($info['ogg']['pageheader']['theora']['flags'] & 0x3e0) >> 5; $info['ogg']['pageheader']['theora']['pixel_format_id'] = ($info['ogg']['pageheader']['theora']['flags'] & 0x18) >> 3; $info['ogg']['pageheader']['theora']['reserved'] = ($info['ogg']['pageheader']['theora']['flags'] & 0x7) >> 0; // should be 0 $info['ogg']['pageheader']['theora']['color_space'] = self::TheoraColorSpace($info['ogg']['pageheader']['theora']['color_space_id']); $info['ogg']['pageheader']['theora']['pixel_format'] = self::TheoraPixelFormat($info['ogg']['pageheader']['theora']['pixel_format_id']); $info['video']['dataformat'] = 'theora'; $info['mime_type'] = 'video/ogg'; //$info['audio']['bitrate_mode'] = 'abr'; //$info['audio']['lossless'] = false; $info['video']['resolution_x'] = $info['ogg']['pageheader']['theora']['resolution_x']; $info['video']['resolution_y'] = $info['ogg']['pageheader']['theora']['resolution_y']; if ($info['ogg']['pageheader']['theora']['frame_rate_denominator'] > 0) { $info['video']['frame_rate'] = (double) $info['ogg']['pageheader']['theora']['frame_rate_numerator'] / $info['ogg']['pageheader']['theora']['frame_rate_denominator']; } if ($info['ogg']['pageheader']['theora']['pixel_aspect_denominator'] > 0) { $info['video']['pixel_aspect_ratio'] = (double) $info['ogg']['pageheader']['theora']['pixel_aspect_numerator'] / $info['ogg']['pageheader']['theora']['pixel_aspect_denominator']; } $info['warning'][] = 'Ogg Theora (v3) not fully supported in this version of getID3 [' . $this->getid3->version() . '] -- bitrate, playtime and all audio data are currently unavailable'; } elseif (substr($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 = $this->fread($oggpageinfo['page_length']); $this->fseek($oggpageinfo['page_end_offset']); 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'] = 'theora1'; $info['error'][] = 'Ogg Theora (v1) 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"); $this->fseek($oggpageinfo['page_start_offset']); $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 = $this->fread($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->ParseVorbisComments(); break; case 'flac': $flac = new getid3_flac($this->getid3); if (!$flac->parseMETAdata()) { $info['error'][] = 'Failed to parse FLAC headers'; return false; } unset($flac); break; case 'speex': $this->fseek($info['ogg']['pageheader'][$oggpageinfo['page_seqno']]['page_length'], SEEK_CUR); $this->ParseVorbisComments(); break; } // Last Page - Number of Samples if (!getid3_lib::intValueSupported($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 { $this->fseek(max($info['avdataend'] - $this->getid3->fread_buffer_size(), 0)); $LastChunkOfOgg = strrev($this->fread($this->getid3->fread_buffer_size())); if ($LastOggSpostion = strpos($LastChunkOfOgg, 'SggO')) { $this->fseek($info['avdataend'] - ($LastOggSpostion + strlen('SggO'))); $info['avdataend'] = $this->ftell(); $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; }