From 45ee8db7fd22ff9c9fe200802ed4e179000a5bb4 Mon Sep 17 00:00:00 2001 From: TheTroll Date: Thu, 25 Feb 2010 15:51:44 +0100 Subject: Replaced mediainfo calls by getid3 --- getid3/module.audio.ogg.php | 556 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 556 insertions(+) create mode 100644 getid3/module.audio.ogg.php (limited to 'getid3/module.audio.ogg.php') diff --git a/getid3/module.audio.ogg.php b/getid3/module.audio.ogg.php new file mode 100644 index 0000000..1cc6366 --- /dev/null +++ b/getid3/module.audio.ogg.php @@ -0,0 +1,556 @@ + // +// 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 +{ + + 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, $ThisFileInfo); + break; + + } + + + + // Last Page - Number of Samples + + if ($ThisFileInfo['avdataend'] >= pow(2, 31)) { + + $ThisFileInfo['warning'][] = 'Unable to parse Ogg end chunk file (PHP does not support file operations beyond 2GB)'; + + } else { + + fseek($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; + } + $ThisFileInfo['playtime_seconds'] = (float) ((($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 ParseVorbisPageHeader(&$filedata, &$filedataoffset, &$ThisFileInfo, &$oggpageinfo) { + $ThisFileInfo['audio']['dataformat'] = 'vorbis'; + $ThisFileInfo['audio']['lossless'] = false; + + $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)); + $filedataoffset += 1; + $ThisFileInfo['ogg']['pageheader'][$oggpageinfo['page_seqno']]['stream_type'] = substr($filedata, $filedataoffset, 6); // hard-coded to 'vorbis' + $filedataoffset += 6; + $ThisFileInfo['ogg']['bitstreamversion'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); + $filedataoffset += 4; + $ThisFileInfo['ogg']['numberofchannels'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)); + $filedataoffset += 1; + $ThisFileInfo['audio']['channels'] = $ThisFileInfo['ogg']['numberofchannels']; + $ThisFileInfo['ogg']['samplerate'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); + $filedataoffset += 4; + if ($ThisFileInfo['ogg']['samplerate'] == 0) { + $ThisFileInfo['error'][] = 'Corrupt Ogg file: sample rate == zero'; + return false; + } + $ThisFileInfo['audio']['sample_rate'] = $ThisFileInfo['ogg']['samplerate']; + $ThisFileInfo['ogg']['samples'] = 0; // filled in later + $ThisFileInfo['ogg']['bitrate_average'] = 0; // filled in later + $ThisFileInfo['ogg']['bitrate_max'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); + $filedataoffset += 4; + $ThisFileInfo['ogg']['bitrate_nominal'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); + $filedataoffset += 4; + $ThisFileInfo['ogg']['bitrate_min'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 4)); + $filedataoffset += 4; + $ThisFileInfo['ogg']['blocksize_small'] = pow(2, getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0x0F); + $ThisFileInfo['ogg']['blocksize_large'] = pow(2, (getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)) & 0xF0) >> 4); + $ThisFileInfo['ogg']['stop_bit'] = getid3_lib::LittleEndian2Int(substr($filedata, $filedataoffset, 1)); // must be 1, marks end of packet + + $ThisFileInfo['audio']['bitrate_mode'] = 'vbr'; // overridden if actually abr + if ($ThisFileInfo['ogg']['bitrate_max'] == 0xFFFFFFFF) { + unset($ThisFileInfo['ogg']['bitrate_max']); + $ThisFileInfo['audio']['bitrate_mode'] = 'abr'; + } + if ($ThisFileInfo['ogg']['bitrate_nominal'] == 0xFFFFFFFF) { + unset($ThisFileInfo['ogg']['bitrate_nominal']); + } + if ($ThisFileInfo['ogg']['bitrate_min'] == 0xFFFFFFFF) { + unset($ThisFileInfo['ogg']['bitrate_min']); + $ThisFileInfo['audio']['bitrate_mode'] = 'abr'; + } + return true; + } + + function ParseOggPageHeader(&$fd) { + // http://xiph.org/ogg/vorbis/doc/framing.html + $oggheader['page_start_offset'] = ftell($fd); // where we started from in the file + + $filedata = fread($fd, GETID3_FREAD_BUFFER_SIZE); + $filedataoffset = 0; + while ((substr($filedata, $filedataoffset++, 4) != 'OggS')) { + if ((ftell($fd) - $oggheader['page_start_offset']) >= GETID3_FREAD_BUFFER_SIZE) { + // should be found before here + return false; + } + if ((($filedataoffset + 28) > strlen($filedata)) || (strlen($filedata) < 28)) { + if (feof($fd) || (($filedata .= fread($fd, GETID3_FREAD_BUFFER_SIZE)) === false)) { + // get some more data, unless eof, in which case fail + 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'] + $oggheader['page_length']; + fseek($fd, $oggheader['header_end_offset'], SEEK_SET); + + return $oggheader; + } + + + function ParseVorbisCommentsFilepointer(&$fd, &$ThisFileInfo) { + + $OriginalOffset = ftell($fd); + $CommentStartOffset = $OriginalOffset; + $commentdataoffset = 0; + $VorbisCommentPage = 1; + + switch ($ThisFileInfo['audio']['dataformat']) { + case 'vorbis': + $CommentStartOffset = $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_start_offset']; // Second Ogg page, after header block + fseek($fd, $CommentStartOffset, SEEK_SET); + $commentdataoffset = 27 + $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_segments']; + $commentdata = fread($fd, getid3_ogg::OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1) + $commentdataoffset); + + $commentdataoffset += (strlen('vorbis') + 1); + break; + + case 'flac': + fseek($fd, $ThisFileInfo['flac']['VORBIS_COMMENT']['raw']['offset'] + 4, SEEK_SET); + $commentdata = fread($fd, $ThisFileInfo['flac']['VORBIS_COMMENT']['raw']['block_length']); + break; + + case 'speex': + $CommentStartOffset = $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_start_offset']; // Second Ogg page, after header block + fseek($fd, $CommentStartOffset, SEEK_SET); + $commentdataoffset = 27 + $ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage]['page_segments']; + $commentdata = fread($fd, getid3_ogg::OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1) + $commentdataoffset); + break; + + default: + return false; + break; + } + + $VendorSize = getid3_lib::LittleEndian2Int(substr($commentdata, $commentdataoffset, 4)); + $commentdataoffset += 4; + + $ThisFileInfo['ogg']['vendor'] = substr($commentdata, $commentdataoffset, $VendorSize); + $commentdataoffset += $VendorSize; + + $CommentsCount = getid3_lib::LittleEndian2Int(substr($commentdata, $commentdataoffset, 4)); + $commentdataoffset += 4; + $ThisFileInfo['avdataoffset'] = $CommentStartOffset + $commentdataoffset; + + $basicfields = array('TITLE', 'ARTIST', 'ALBUM', 'TRACKNUMBER', 'GENRE', 'DATE', 'DESCRIPTION', 'COMMENT'); + for ($i = 0; $i < $CommentsCount; $i++) { + + $ThisFileInfo['ogg']['comments_raw'][$i]['dataoffset'] = $CommentStartOffset + $commentdataoffset; + + if (ftell($fd) < ($ThisFileInfo['ogg']['comments_raw'][$i]['dataoffset'] + 4)) { + $VorbisCommentPage++; + + $oggpageinfo = getid3_ogg::ParseOggPageHeader($fd); + $ThisFileInfo['ogg']['pageheader'][$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 + $ThisFileInfo['ogg']['pageheader'][$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, getid3_ogg::OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1)); + + } + $ThisFileInfo['ogg']['comments_raw'][$i]['size'] = getid3_lib::LittleEndian2Int(substr($commentdata, $commentdataoffset, 4)); + + // replace avdataoffset with position just after the last vorbiscomment + $ThisFileInfo['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'] > $ThisFileInfo['avdataend']) || ($ThisFileInfo['ogg']['comments_raw'][$i]['size'] < 0)) { + $ThisFileInfo['error'][] = 'Invalid Ogg comment size (comment #'.$i.', claims to be '.number_format($ThisFileInfo['ogg']['comments_raw'][$i]['size']).' bytes) - aborting reading comments'; + break 2; + } + + $VorbisCommentPage++; + + $oggpageinfo = getid3_ogg::ParseOggPageHeader($fd); + $ThisFileInfo['ogg']['pageheader'][$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 + $ThisFileInfo['ogg']['pageheader'][$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, getid3_ogg::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? + $ThisFileInfo['warning'][] = 'Blank Ogg comment ['.$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]; + $ThisFileInfo['ogg']['comments_raw'][$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']; + + $imageinfo = array(); + $imagechunkcheck = getid3_lib::GetDataImageSize($ThisFileInfo['ogg']['comments_raw'][$i]['data'], $imageinfo); + $ThisFileInfo['ogg']['comments_raw'][$i]['image_mime'] = getid3_lib::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 { + + $ThisFileInfo['warning'][] = '[known problem with CDex >= v1.40, < v1.50b7] Invalid Ogg comment name/value pair ['.$i.']: '.$commentstring; + + } + } + + + // Replay Gain Adjustment + // http://privatewww.essex.ac.uk/~djmrob/replaygain/ + if (isset($ThisFileInfo['ogg']['comments']) && is_array($ThisFileInfo['ogg']['comments'])) { + foreach ($ThisFileInfo['ogg']['comments'] as $index => $commentvalue) { + switch ($index) { + case 'rg_audiophile': + case 'replaygain_album_gain': + $ThisFileInfo['replay_gain']['album']['adjustment'] = (double) $commentvalue[0]; + unset($ThisFileInfo['ogg']['comments'][$index]); + break; + + case 'rg_radio': + case 'replaygain_track_gain': + $ThisFileInfo['replay_gain']['track']['adjustment'] = (double) $commentvalue[0]; + unset($ThisFileInfo['ogg']['comments'][$index]); + break; + + case 'replaygain_album_peak': + $ThisFileInfo['replay_gain']['album']['peak'] = (double) $commentvalue[0]; + unset($ThisFileInfo['ogg']['comments'][$index]); + break; + + case 'rg_peak': + case 'replaygain_track_peak': + $ThisFileInfo['replay_gain']['track']['peak'] = (double) $commentvalue[0]; + unset($ThisFileInfo['ogg']['comments'][$index]); + break; + + + default: + // do nothing + break; + } + } + } + + fseek($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 $segmentlength; + } + + + function get_quality_from_nominal_bitrate($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 + } + +} + +?> \ No newline at end of file -- cgit v1.2.3