static 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'); $ThisFileInfo_ogg_comments_raw =& $ThisFileInfo['ogg']['comments_raw']; for ($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("", 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['warning'][] = 'Invalid Ogg comment size (comment #' . $i . ', claims to be ' . number_format($ThisFileInfo_ogg_comments_raw[$i]['size']) . ' bytes) - aborting reading comments'; break 2; } $VorbisCommentPage++; $oggpageinfo = getid3_ogg::ParseOggPageHeader($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("", 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']); if (!isset($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage])) { $ThisFileInfo['warning'][] = 'undefined Vorbis Comment page "' . $VorbisCommentPage . '" at offset ' . ftell($fd); break; } $readlength = getid3_ogg::OggPageSegmentLength($ThisFileInfo['ogg']['pageheader'][$VorbisCommentPage], 1); if ($readlength <= 0) { $ThisFileInfo['warning'][] = 'invalid length Vorbis Comment page "' . $VorbisCommentPage . '" at offset ' . ftell($fd); break; } $commentdata .= fread($fd, $readlength); //$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'] = isset($commentexploded[1]) ? $commentexploded[1] : ''; $ThisFileInfo_ogg_comments_raw[$i]['data'] = base64_decode($ThisFileInfo_ogg_comments_raw[$i]['value']); if (preg_match('#^(BM|GIF|\\xFF\\xD8\\xFF|\\x89\\x50\\x4E\\x47\\x0D\\x0A\\x1A\\x0A|II\\x2A\\x00|MM\\x00\\x2A)#s', $ThisFileInfo_ogg_comments_raw[$i]['data'])) { $imageinfo = array(); $imagechunkcheck = getid3_lib::GetDataImageSize($ThisFileInfo_ogg_comments_raw[$i]['data'], $imageinfo); unset($imageinfo); if (!empty($imagechunkcheck)) { $ThisFileInfo_ogg_comments_raw[$i]['image_mime'] = image_type_to_mime_type($imagechunkcheck[2]); if ($ThisFileInfo_ogg_comments_raw[$i]['image_mime'] && $ThisFileInfo_ogg_comments_raw[$i]['image_mime'] != 'application/octet-stream') { unset($ThisFileInfo_ogg_comments_raw[$i]['value']); } } } if (isset($ThisFileInfo_ogg_comments_raw[$i]['value'])) { unset($ThisFileInfo_ogg_comments_raw[$i]['data']); $ThisFileInfo['ogg']['comments'][strtolower($ThisFileInfo_ogg_comments_raw[$i]['key'])][] = $ThisFileInfo_ogg_comments_raw[$i]['value']; } else { $ThisFileInfo['ogg']['comments']['picture'][] = array('data' => $ThisFileInfo_ogg_comments_raw[$i]['data'], 'image_mime' => $ThisFileInfo_ogg_comments_raw[$i]['image_mime']); } } 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; }