mambax7 /
xoopseditors
| Total Complexity | 116 |
| Total Lines | 851 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like getid3_xiph often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use getid3_xiph, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 25 | class getid3_xiph extends getid3_handler |
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| 26 | { |
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| 27 | |||
| 28 | public function Analyze() |
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| 29 | { |
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| 30 | $getid3 = $this->getid3; |
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| 31 | |||
| 32 | if ($getid3->option_tags_images) { |
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| 33 | $getid3->include_module('lib.image_size'); |
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| 34 | } |
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| 35 | |||
| 36 | fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); |
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| 37 | |||
| 38 | $magic = fread($getid3->fp, 4); |
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| 39 | |||
| 40 | if ('OggS' == $magic) { |
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| 41 | return $this->ParseOgg(); |
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| 42 | } |
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| 43 | |||
| 44 | if ('fLaC' == $magic) { |
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| 45 | return $this->ParseFLAC(); |
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| 46 | } |
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| 47 | } |
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| 48 | |||
| 49 | private function ParseOgg() |
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| 50 | { |
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| 51 | $getid3 = $this->getid3; |
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| 52 | |||
| 53 | fseek($getid3->fp, $getid3->info['avdataoffset'], SEEK_SET); |
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| 54 | |||
| 55 | $getid3->info['audio'] = $getid3->info['ogg'] = []; |
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| 56 | $info_ogg = &$getid3->info['ogg']; |
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| 57 | $info_audio = &$getid3->info['audio']; |
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| 58 | |||
| 59 | $getid3->info['fileformat'] = 'ogg'; |
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| 60 | |||
| 61 | //// Page 1 - Stream Header |
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| 62 | |||
| 63 | $ogg_page_info = $this->ParseOggPageHeader(); |
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| 64 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']] = $ogg_page_info; |
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| 65 | |||
| 66 | if (ftell($getid3->fp) >= getid3::FREAD_BUFFER_SIZE) { |
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| 67 | throw new getid3_exception('Could not find start of Ogg page in the first ' . getid3::FREAD_BUFFER_SIZE . ' bytes (this might not be an Ogg file?)'); |
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| 68 | } |
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| 69 | |||
| 70 | $file_data = fread($getid3->fp, $ogg_page_info['page_length']); |
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| 71 | $file_data_offset = 0; |
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|
Unused Code
introduced
by
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| 72 | |||
| 73 | // OggFLAC |
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| 74 | if ('fLaC' == substr($file_data, 0, 4)) { |
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| 75 | $info_audio['dataformat'] = 'flac'; |
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| 76 | $info_audio['bitrate_mode'] = 'vbr'; |
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| 77 | $info_audio['lossless'] = true; |
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| 78 | } // Ogg Vorbis |
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| 79 | elseif ('vorbis' == substr($file_data, 1, 6)) { |
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| 80 | $info_audio['dataformat'] = 'vorbis'; |
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| 81 | $info_audio['lossless'] = false; |
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| 82 | |||
| 83 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int($file_data[0]); |
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| 84 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['stream_type'] = substr($file_data, 1, 6); // hard-coded to 'vorbis' |
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| 85 | |||
| 86 | getid3_lib::ReadSequence( |
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| 87 | 'LittleEndian2Int', |
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| 88 | $info_ogg, |
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| 89 | $file_data, |
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| 90 | 7, |
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| 91 | [ |
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| 92 | 'bitstreamversion' => 4, |
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| 93 | 'numberofchannels' => 1, |
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| 94 | 'samplerate' => 4, |
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| 95 | 'bitrate_max' => 4, |
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| 96 | 'bitrate_nominal' => 4, |
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| 97 | 'bitrate_min' => 4 |
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| 98 | ] |
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| 99 | ); |
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| 100 | |||
| 101 | $n28 = getid3_lib::LittleEndian2Int($file_data{28}); |
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| 102 | $info_ogg['blocksize_small'] = pow(2, $n28 & 0x0F); |
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| 103 | $info_ogg['blocksize_large'] = pow(2, ($n28 & 0xF0) >> 4); |
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| 104 | $info_ogg['stop_bit'] = $n28; |
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| 105 | |||
| 106 | $info_audio['channels'] = $info_ogg['numberofchannels']; |
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| 107 | $info_audio['sample_rate'] = $info_ogg['samplerate']; |
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| 108 | |||
| 109 | $info_audio['bitrate_mode'] = 'vbr'; // overridden if actually abr |
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| 110 | |||
| 111 | if (0xFFFFFFFF == $info_ogg['bitrate_max']) { |
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| 112 | unset($info_ogg['bitrate_max']); |
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| 113 | $info_audio['bitrate_mode'] = 'abr'; |
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| 114 | } |
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| 115 | |||
| 116 | if (0xFFFFFFFF == $info_ogg['bitrate_nominal']) { |
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| 117 | unset($info_ogg['bitrate_nominal']); |
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| 118 | } |
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| 119 | |||
| 120 | if (0xFFFFFFFF == $info_ogg['bitrate_min']) { |
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| 121 | unset($info_ogg['bitrate_min']); |
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| 122 | $info_audio['bitrate_mode'] = 'abr'; |
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| 123 | } |
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| 124 | } // Speex |
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| 125 | elseif ('Speex ' == substr($file_data, 0, 8)) { |
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| 126 | // http://www.speex.org/manual/node10.html |
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| 127 | |||
| 128 | $info_audio['dataformat'] = 'speex'; |
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| 129 | $getid3->info['mime_type'] = 'audio/speex'; |
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| 130 | $info_audio['bitrate_mode'] = 'abr'; |
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| 131 | $info_audio['lossless'] = false; |
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| 132 | |||
| 133 | getid3_lib::ReadSequence( |
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| 134 | 'LittleEndian2Int', |
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| 135 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']], |
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| 136 | $file_data, |
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| 137 | 0, |
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| 138 | [ |
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| 139 | 'speex_string' => -8, // hard-coded to 'Speex ' |
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| 140 | 'speex_version' => -20, // string |
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| 141 | 'speex_version_id' => 4, |
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| 142 | 'header_size' => 4, |
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| 143 | 'rate' => 4, |
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| 144 | 'mode' => 4, |
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| 145 | 'mode_bitstream_version' => 4, |
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| 146 | 'nb_channels' => 4, |
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| 147 | 'bitrate' => 4, |
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| 148 | 'framesize' => 4, |
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| 149 | 'vbr' => 4, |
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| 150 | 'frames_per_packet' => 4, |
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| 151 | 'extra_headers' => 4, |
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| 152 | 'reserved1' => 4, |
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| 153 | 'reserved2' => 4 |
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| 154 | ] |
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| 155 | ); |
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| 156 | |||
| 157 | $getid3->info['speex']['speex_version'] = trim($info_ogg['pageheader'][$ogg_page_info['page_seqno']]['speex_version']); |
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| 158 | $getid3->info['speex']['sample_rate'] = $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['rate']; |
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| 159 | $getid3->info['speex']['channels'] = $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['nb_channels']; |
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| 160 | $getid3->info['speex']['vbr'] = (bool)$info_ogg['pageheader'][$ogg_page_info['page_seqno']]['vbr']; |
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| 161 | $getid3->info['speex']['band_type'] = getid3_xiph::SpeexBandModeLookup($info_ogg['pageheader'][$ogg_page_info['page_seqno']]['mode']); |
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| 162 | |||
| 163 | $info_audio['sample_rate'] = $getid3->info['speex']['sample_rate']; |
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| 164 | $info_audio['channels'] = $getid3->info['speex']['channels']; |
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| 165 | |||
| 166 | if ($getid3->info['speex']['vbr']) { |
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| 167 | $info_audio['bitrate_mode'] = 'vbr'; |
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| 168 | } |
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| 169 | } // Unsupported Ogg file |
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| 170 | else { |
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| 171 | throw new getid3_exception('Expecting either "Speex " or "vorbis" identifier strings, found neither'); |
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| 172 | } |
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| 173 | |||
| 174 | //// Page 2 - Comment Header |
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| 175 | |||
| 176 | $ogg_page_info = $this->ParseOggPageHeader(); |
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| 177 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']] = $ogg_page_info; |
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| 178 | |||
| 179 | switch ($info_audio['dataformat']) { |
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| 180 | case 'vorbis': |
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| 181 | $file_data = fread($getid3->fp, $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['page_length']); |
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| 182 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['packet_type'] = getid3_lib::LittleEndian2Int(substr($file_data, 0, 1)); |
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| 183 | $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['stream_type'] = substr($file_data, 1, 6); // hard-coded to 'vorbis' |
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| 184 | $this->ParseVorbisCommentsFilepointer(); |
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| 185 | break; |
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| 186 | |||
| 187 | case 'flac': |
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| 188 | if (!$this->FLACparseMETAdata()) { |
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| 189 | throw new getid3_exception('Failed to parse FLAC headers'); |
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| 190 | } |
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| 191 | break; |
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| 192 | |||
| 193 | case 'speex': |
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| 194 | fseek($getid3->fp, $info_ogg['pageheader'][$ogg_page_info['page_seqno']]['page_length'], SEEK_CUR); |
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| 195 | $this->ParseVorbisCommentsFilepointer(); |
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| 196 | break; |
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| 197 | } |
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| 198 | |||
| 199 | //// Last Page - Number of Samples |
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| 200 | |||
| 201 | fseek($getid3->fp, max($getid3->info['avdataend'] - getid3::FREAD_BUFFER_SIZE, 0), SEEK_SET); |
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| 202 | $last_chunk_of_ogg = strrev(fread($getid3->fp, getid3::FREAD_BUFFER_SIZE)); |
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| 203 | |||
| 204 | if ($last_OggS_postion = strpos($last_chunk_of_ogg, 'SggO')) { |
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| 205 | fseek($getid3->fp, $getid3->info['avdataend'] - ($last_OggS_postion + strlen('SggO')), SEEK_SET); |
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| 206 | $getid3->info['avdataend'] = ftell($getid3->fp); |
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| 207 | $info_ogg['pageheader']['eos'] = $this->ParseOggPageHeader(); |
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| 208 | $info_ogg['samples'] = $info_ogg['pageheader']['eos']['pcm_abs_position']; |
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| 209 | $info_ogg['bitrate_average'] = (($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8) / ($info_ogg['samples'] / $info_audio['sample_rate']); |
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| 210 | } |
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| 211 | |||
| 212 | if (!empty($info_ogg['bitrate_average'])) { |
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| 213 | $info_audio['bitrate'] = $info_ogg['bitrate_average']; |
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| 214 | } elseif (!empty($info_ogg['bitrate_nominal'])) { |
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| 215 | $info_audio['bitrate'] = $info_ogg['bitrate_nominal']; |
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| 216 | } elseif (!empty($info_ogg['bitrate_min']) && !empty($info_ogg['bitrate_max'])) { |
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| 217 | $info_audio['bitrate'] = ($info_ogg['bitrate_min'] + $info_ogg['bitrate_max']) / 2; |
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| 218 | } |
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| 219 | if (isset($info_audio['bitrate']) && !isset($getid3->info['playtime_seconds'])) { |
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| 220 | $getid3->info['playtime_seconds'] = (float)((($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8) / $info_audio['bitrate']); |
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| 221 | } |
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| 222 | |||
| 223 | if (isset($info_ogg['vendor'])) { |
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| 224 | $info_audio['encoder'] = preg_replace('/^Encoded with /', '', $info_ogg['vendor']); |
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| 225 | |||
| 226 | // Vorbis only |
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| 227 | if ('vorbis' == $info_audio['dataformat']) { |
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| 228 | // Vorbis 1.0 starts with Xiph.Org |
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| 229 | if (preg_match('/^Xiph.Org/', $info_audio['encoder'])) { |
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| 230 | if ('abr' == $info_audio['bitrate_mode']) { |
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| 231 | // Set -b 128 on abr files |
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| 232 | $info_audio['encoder_options'] = '-b ' . round($info_ogg['bitrate_nominal'] / 1000); |
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| 233 | } elseif (('vbr' == $info_audio['bitrate_mode']) && (2 == $info_audio['channels']) && ($info_audio['sample_rate'] >= 44100) && ($info_audio['sample_rate'] <= 48000)) { |
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| 234 | // Set -q N on vbr files |
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| 235 | $info_audio['encoder_options'] = '-q ' . getid3_xiph::GetQualityFromNominalBitrate($info_ogg['bitrate_nominal']); |
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| 236 | } |
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| 237 | } |
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| 238 | |||
| 239 | if (empty($info_audio['encoder_options']) && !empty($info_ogg['bitrate_nominal'])) { |
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| 240 | $info_audio['encoder_options'] = 'Nominal bitrate: ' . intval(round($info_ogg['bitrate_nominal'] / 1000)) . 'kbps'; |
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| 241 | } |
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| 242 | } |
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| 243 | } |
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| 244 | |||
| 245 | return true; |
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| 246 | } |
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| 247 | |||
| 248 | private function ParseOggPageHeader() |
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| 249 | { |
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| 250 | $getid3 = $this->getid3; |
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| 251 | |||
| 252 | // http://xiph.org/ogg/vorbis/doc/framing.html |
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| 253 | $ogg_header['page_start_offset'] = ftell($getid3->fp); // where we started from in the file |
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| 254 | |||
| 255 | $file_data = fread($getid3->fp, getid3::FREAD_BUFFER_SIZE); |
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| 256 | $file_data_offset = 0; |
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| 257 | |||
| 258 | while (('OggS' != substr($file_data, $file_data_offset++, 4))) { |
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| 259 | if ((ftell($getid3->fp) - $ogg_header['page_start_offset']) >= getid3::FREAD_BUFFER_SIZE) { |
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| 260 | // should be found before here |
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| 261 | return false; |
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| 262 | } |
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| 263 | if ((($file_data_offset + 28) > strlen($file_data)) || (strlen($file_data) < 28)) { |
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| 264 | if (feof($getid3->fp) || (false === ($file_data .= fread($getid3->fp, getid3::FREAD_BUFFER_SIZE)))) { |
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| 265 | // get some more data, unless eof, in which case fail |
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| 266 | return false; |
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| 267 | } |
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| 268 | } |
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| 269 | } |
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| 270 | |||
| 271 | $file_data_offset += 3; // page, delimited by 'OggS' |
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| 272 | |||
| 273 | getid3_lib::ReadSequence( |
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| 274 | 'LittleEndian2Int', |
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| 275 | $ogg_header, |
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| 276 | $file_data, |
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| 277 | $file_data_offset, |
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| 278 | [ |
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| 279 | 'stream_structver' => 1, |
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| 280 | 'flags_raw' => 1, |
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| 281 | 'pcm_abs_position' => 8, |
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| 282 | 'stream_serialno' => 4, |
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| 283 | 'page_seqno' => 4, |
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| 284 | 'page_checksum' => 4, |
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| 285 | 'page_segments' => 1 |
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| 286 | ] |
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| 287 | ); |
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| 288 | |||
| 289 | $file_data_offset += 23; |
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| 290 | |||
| 291 | $ogg_header['flags']['fresh'] = (bool)($ogg_header['flags_raw'] & 0x01); // fresh packet |
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| 292 | $ogg_header['flags']['bos'] = (bool)($ogg_header['flags_raw'] & 0x02); // first page of logical bitstream (bos) |
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| 293 | $ogg_header['flags']['eos'] = (bool)($ogg_header['flags_raw'] & 0x04); // last page of logical bitstream (eos) |
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| 294 | |||
| 295 | $ogg_header['page_length'] = 0; |
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| 296 | for ($i = 0; $i < $ogg_header['page_segments']; $i++) { |
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| 297 | $ogg_header['segment_table'][$i] = getid3_lib::LittleEndian2Int($file_data{$file_data_offset++}); |
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| 298 | $ogg_header['page_length'] += $ogg_header['segment_table'][$i]; |
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| 299 | } |
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| 300 | $ogg_header['header_end_offset'] = $ogg_header['page_start_offset'] + $file_data_offset; |
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| 301 | $ogg_header['page_end_offset'] = $ogg_header['header_end_offset'] + $ogg_header['page_length']; |
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| 302 | fseek($getid3->fp, $ogg_header['header_end_offset'], SEEK_SET); |
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| 303 | |||
| 304 | return $ogg_header; |
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| 305 | } |
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| 306 | |||
| 307 | private function ParseVorbisCommentsFilepointer() |
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| 308 | { |
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| 309 | $getid3 = $this->getid3; |
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| 310 | |||
| 311 | $original_offset = ftell($getid3->fp); |
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| 312 | $comment_start_offset = $original_offset; |
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| 313 | $comment_data_offset = 0; |
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| 314 | $vorbis_comment_page = 1; |
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| 315 | |||
| 316 | switch ($getid3->info['audio']['dataformat']) { |
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| 317 | case 'vorbis': |
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| 318 | $comment_start_offset = $getid3->info['ogg']['pageheader'][$vorbis_comment_page]['page_start_offset']; // Second Ogg page, after header block |
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| 319 | fseek($getid3->fp, $comment_start_offset, SEEK_SET); |
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| 320 | $comment_data_offset = 27 + $getid3->info['ogg']['pageheader'][$vorbis_comment_page]['page_segments']; |
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| 321 | $comment_data = fread($getid3->fp, getid3_xiph::OggPageSegmentLength($getid3->info['ogg']['pageheader'][$vorbis_comment_page], 1) + $comment_data_offset); |
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| 322 | $comment_data_offset += (strlen('vorbis') + 1); |
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| 323 | break; |
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| 324 | |||
| 325 | case 'flac': |
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| 326 | fseek($getid3->fp, $getid3->info['flac']['VORBIS_COMMENT']['raw']['offset'] + 4, SEEK_SET); |
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| 327 | $comment_data = fread($getid3->fp, $getid3->info['flac']['VORBIS_COMMENT']['raw']['block_length']); |
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| 328 | break; |
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| 329 | |||
| 330 | case 'speex': |
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| 331 | $comment_start_offset = $getid3->info['ogg']['pageheader'][$vorbis_comment_page]['page_start_offset']; // Second Ogg page, after header block |
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| 332 | fseek($getid3->fp, $comment_start_offset, SEEK_SET); |
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| 333 | $comment_data_offset = 27 + $getid3->info['ogg']['pageheader'][$vorbis_comment_page]['page_segments']; |
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| 334 | $comment_data = fread($getid3->fp, getid3_xiph::OggPageSegmentLength($getid3->info['ogg']['pageheader'][$vorbis_comment_page], 1) + $comment_data_offset); |
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| 335 | break; |
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| 336 | |||
| 337 | default: |
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| 338 | return false; |
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| 339 | } |
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| 340 | |||
| 341 | $vendor_size = getid3_lib::LittleEndian2Int(substr($comment_data, $comment_data_offset, 4)); |
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| 342 | $comment_data_offset += 4; |
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| 343 | |||
| 344 | $getid3->info['ogg']['vendor'] = substr($comment_data, $comment_data_offset, $vendor_size); |
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| 345 | $comment_data_offset += $vendor_size; |
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| 346 | |||
| 347 | $comments_count = getid3_lib::LittleEndian2Int(substr($comment_data, $comment_data_offset, 4)); |
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| 348 | $comment_data_offset += 4; |
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| 349 | |||
| 350 | $getid3->info['avdataoffset'] = $comment_start_offset + $comment_data_offset; |
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| 351 | |||
| 352 | for ($i = 0; $i < $comments_count; $i++) { |
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| 353 | $getid3->info['ogg']['comments_raw'][$i]['dataoffset'] = $comment_start_offset + $comment_data_offset; |
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| 354 | |||
| 355 | if (ftell($getid3->fp) < ($getid3->info['ogg']['comments_raw'][$i]['dataoffset'] + 4)) { |
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| 356 | $vorbis_comment_page++; |
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| 357 | |||
| 358 | $ogg_page_info = $this->ParseOggPageHeader(); |
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| 359 | $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']] = $ogg_page_info; |
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| 360 | |||
| 361 | // First, save what we haven't read yet |
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| 362 | $as_yet_unused_data = substr($comment_data, $comment_data_offset); |
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| 363 | |||
| 364 | // Then take that data off the end |
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| 365 | $comment_data = substr($comment_data, 0, $comment_data_offset); |
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| 366 | |||
| 367 | // Add [headerlength] bytes of dummy data for the Ogg Page Header, just to keep absolute offsets correct |
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| 368 | $comment_data .= str_repeat("\x00", 27 + $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']]['page_segments']); |
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| 369 | $comment_data_offset += (27 + $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']]['page_segments']); |
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| 370 | |||
| 371 | // Finally, stick the unused data back on the end |
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| 372 | $comment_data .= $as_yet_unused_data; |
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| 373 | |||
| 374 | $comment_data .= fread($getid3->fp, getid3_xiph::OggPageSegmentLength($getid3->info['ogg']['pageheader'][$vorbis_comment_page], 1)); |
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| 375 | } |
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| 376 | $getid3->info['ogg']['comments_raw'][$i]['size'] = getid3_lib::LittleEndian2Int(substr($comment_data, $comment_data_offset, 4)); |
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| 377 | |||
| 378 | // replace avdataoffset with position just after the last vorbiscomment |
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| 379 | $getid3->info['avdataoffset'] = $getid3->info['ogg']['comments_raw'][$i]['dataoffset'] + $getid3->info['ogg']['comments_raw'][$i]['size'] + 4; |
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| 380 | |||
| 381 | $comment_data_offset += 4; |
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| 382 | while ((strlen($comment_data) - $comment_data_offset) < $getid3->info['ogg']['comments_raw'][$i]['size']) { |
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| 383 | if (($getid3->info['ogg']['comments_raw'][$i]['size'] > $getid3->info['avdataend']) || ($getid3->info['ogg']['comments_raw'][$i]['size'] < 0)) { |
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| 384 | throw new getid3_exception('Invalid Ogg comment size (comment #' . $i . ', claims to be ' . number_format($getid3->info['ogg']['comments_raw'][$i]['size']) . ' bytes) - aborting reading comments'); |
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| 385 | } |
||
| 386 | |||
| 387 | $vorbis_comment_page++; |
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| 388 | |||
| 389 | $ogg_page_info = $this->ParseOggPageHeader(); |
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| 390 | $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']] = $ogg_page_info; |
||
| 391 | |||
| 392 | // First, save what we haven't read yet |
||
| 393 | $as_yet_unused_data = substr($comment_data, $comment_data_offset); |
||
| 394 | |||
| 395 | // Then take that data off the end |
||
| 396 | $comment_data = substr($comment_data, 0, $comment_data_offset); |
||
| 397 | |||
| 398 | // Add [headerlength] bytes of dummy data for the Ogg Page Header, just to keep absolute offsets correct |
||
| 399 | $comment_data .= str_repeat("\x00", 27 + $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']]['page_segments']); |
||
| 400 | $comment_data_offset += (27 + $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']]['page_segments']); |
||
| 401 | |||
| 402 | // Finally, stick the unused data back on the end |
||
| 403 | $comment_data .= $as_yet_unused_data; |
||
| 404 | |||
| 405 | //$comment_data .= fread($getid3->fp, $getid3->info['ogg']['pageheader'][$ogg_page_info['page_seqno']]['page_length']); |
||
| 406 | $comment_data .= fread($getid3->fp, getid3_xiph::OggPageSegmentLength($getid3->info['ogg']['pageheader'][$vorbis_comment_page], 1)); |
||
| 407 | //$filebaseoffset += $ogg_page_info['header_end_offset'] - $ogg_page_info['page_start_offset']; |
||
| 408 | } |
||
| 409 | $comment_string = substr($comment_data, $comment_data_offset, $getid3->info['ogg']['comments_raw'][$i]['size']); |
||
| 410 | $comment_data_offset += $getid3->info['ogg']['comments_raw'][$i]['size']; |
||
| 411 | |||
| 412 | if (!$comment_string) { |
||
| 413 | // no comment? |
||
| 414 | $getid3->warning('Blank Ogg comment [' . $i . ']'); |
||
| 415 | } elseif (strstr($comment_string, '=')) { |
||
| 416 | $comment_exploded = explode('=', $comment_string, 2); |
||
| 417 | $getid3->info['ogg']['comments_raw'][$i]['key'] = strtoupper($comment_exploded[0]); |
||
| 418 | $getid3->info['ogg']['comments_raw'][$i]['value'] = @$comment_exploded[1]; |
||
| 419 | $getid3->info['ogg']['comments_raw'][$i]['data'] = base64_decode($getid3->info['ogg']['comments_raw'][$i]['value']); |
||
| 420 | |||
| 421 | $getid3->info['ogg']['comments'][strtolower($getid3->info['ogg']['comments_raw'][$i]['key'])][] = $getid3->info['ogg']['comments_raw'][$i]['value']; |
||
| 422 | |||
| 423 | if ($getid3->option_tags_images) { |
||
| 424 | $image_chunk_check = getid3_lib_image_size::get($getid3->info['ogg']['comments_raw'][$i]['data']); |
||
| 425 | $getid3->info['ogg']['comments_raw'][$i]['image_mime'] = image_type_to_mime_type($image_chunk_check[2]); |
||
| 426 | } |
||
| 427 | |||
| 428 | if (!@$getid3->info['ogg']['comments_raw'][$i]['image_mime'] || ('application/octet-stream' == $getid3->info['ogg']['comments_raw'][$i]['image_mime'])) { |
||
| 429 | unset($getid3->info['ogg']['comments_raw'][$i]['image_mime']); |
||
| 430 | unset($getid3->info['ogg']['comments_raw'][$i]['data']); |
||
| 431 | } |
||
| 432 | } else { |
||
| 433 | $getid3->warning('[known problem with CDex >= v1.40, < v1.50b7] Invalid Ogg comment name/value pair [' . $i . ']: ' . $comment_string); |
||
| 434 | } |
||
| 435 | } |
||
| 436 | |||
| 437 | // Replay Gain Adjustment |
||
| 438 | // http://privatewww.essex.ac.uk/~djmrob/replaygain/ |
||
| 439 | if (isset($getid3->info['ogg']['comments']) && is_array($getid3->info['ogg']['comments'])) { |
||
| 440 | foreach ($getid3->info['ogg']['comments'] as $index => $commentvalue) { |
||
| 441 | switch ($index) { |
||
| 442 | case 'rg_audiophile': |
||
| 443 | case 'replaygain_album_gain': |
||
| 444 | $getid3->info['replay_gain']['album']['adjustment'] = (float)$commentvalue[0]; |
||
| 445 | unset($getid3->info['ogg']['comments'][$index]); |
||
| 446 | break; |
||
| 447 | |||
| 448 | case 'rg_radio': |
||
| 449 | case 'replaygain_track_gain': |
||
| 450 | $getid3->info['replay_gain']['track']['adjustment'] = (float)$commentvalue[0]; |
||
| 451 | unset($getid3->info['ogg']['comments'][$index]); |
||
| 452 | break; |
||
| 453 | |||
| 454 | case 'replaygain_album_peak': |
||
| 455 | $getid3->info['replay_gain']['album']['peak'] = (float)$commentvalue[0]; |
||
| 456 | unset($getid3->info['ogg']['comments'][$index]); |
||
| 457 | break; |
||
| 458 | |||
| 459 | case 'rg_peak': |
||
| 460 | case 'replaygain_track_peak': |
||
| 461 | $getid3->info['replay_gain']['track']['peak'] = (float)$commentvalue[0]; |
||
| 462 | unset($getid3->info['ogg']['comments'][$index]); |
||
| 463 | break; |
||
| 464 | |||
| 465 | case 'replaygain_reference_loudness': |
||
| 466 | $getid3->info['replay_gain']['reference_volume'] = (float)$commentvalue[0]; |
||
| 467 | unset($getid3->info['ogg']['comments'][$index]); |
||
| 468 | break; |
||
| 469 | } |
||
| 470 | } |
||
| 471 | } |
||
| 472 | |||
| 473 | fseek($getid3->fp, $original_offset, SEEK_SET); |
||
| 474 | |||
| 475 | return true; |
||
| 476 | } |
||
| 477 | |||
| 478 | private function ParseFLAC() |
||
| 479 | { |
||
| 480 | $getid3 = $this->getid3; |
||
| 481 | |||
| 482 | // http://flac.sourceforge.net/format.html |
||
| 483 | |||
| 484 | $getid3->info['fileformat'] = 'flac'; |
||
| 485 | $getid3->info['audio']['dataformat'] = 'flac'; |
||
| 486 | $getid3->info['audio']['bitrate_mode'] = 'vbr'; |
||
| 487 | $getid3->info['audio']['lossless'] = true; |
||
| 488 | |||
| 489 | return $this->FLACparseMETAdata(); |
||
| 490 | } |
||
| 491 | |||
| 492 | private function FLACparseMETAdata() |
||
| 493 | { |
||
| 494 | $getid3 = $this->getid3; |
||
| 495 | |||
| 496 | do { |
||
| 497 | $meta_data_block_offset = ftell($getid3->fp); |
||
| 498 | $meta_data_block_header = fread($getid3->fp, 4); |
||
| 499 | $meta_data_last_block_flag = (bool)(getid3_lib::BigEndian2Int($meta_data_block_header[0]) & 0x80); |
||
| 500 | $meta_data_block_type = getid3_lib::BigEndian2Int($meta_data_block_header[0]) & 0x7F; |
||
| 501 | $meta_data_block_length = getid3_lib::BigEndian2Int(substr($meta_data_block_header, 1, 3)); |
||
| 502 | $meta_data_block_type_text = getid3_xiph::FLACmetaBlockTypeLookup($meta_data_block_type); |
||
| 503 | |||
| 504 | if ($meta_data_block_length < 0) { |
||
| 505 | throw new getid3_exception('corrupt or invalid METADATA_BLOCK_HEADER.BLOCK_TYPE (' . $meta_data_block_type . ') at offset ' . $meta_data_block_offset); |
||
| 506 | } |
||
| 507 | |||
| 508 | $getid3->info['flac'][$meta_data_block_type_text]['raw'] = [ |
||
| 509 | 'offset' => $meta_data_block_offset, |
||
| 510 | 'last_meta_block' => $meta_data_last_block_flag, |
||
| 511 | 'block_type' => $meta_data_block_type, |
||
| 512 | 'block_type_text' => $meta_data_block_type_text, |
||
| 513 | 'block_length' => $meta_data_block_length, |
||
| 514 | 'block_data' => @fread($getid3->fp, $meta_data_block_length) |
||
| 515 | ]; |
||
| 516 | $getid3->info['avdataoffset'] = ftell($getid3->fp); |
||
| 517 | |||
| 518 | switch ($meta_data_block_type_text) { |
||
| 519 | case 'STREAMINFO': |
||
| 520 | if (!$this->FLACparseSTREAMINFO($getid3->info['flac'][$meta_data_block_type_text]['raw']['block_data'])) { |
||
| 521 | return false; |
||
| 522 | } |
||
| 523 | break; |
||
| 524 | |||
| 525 | case 'PADDING': |
||
| 526 | // ignore |
||
| 527 | break; |
||
| 528 | |||
| 529 | case 'APPLICATION': |
||
| 530 | if (!$this->FLACparseAPPLICATION($getid3->info['flac'][$meta_data_block_type_text]['raw']['block_data'])) { |
||
| 531 | return false; |
||
| 532 | } |
||
| 533 | break; |
||
| 534 | |||
| 535 | case 'SEEKTABLE': |
||
| 536 | if (!$this->FLACparseSEEKTABLE($getid3->info['flac'][$meta_data_block_type_text]['raw']['block_data'])) { |
||
| 537 | return false; |
||
| 538 | } |
||
| 539 | break; |
||
| 540 | |||
| 541 | case 'VORBIS_COMMENT': |
||
| 542 | $old_offset = ftell($getid3->fp); |
||
| 543 | fseek($getid3->fp, 0 - $meta_data_block_length, SEEK_CUR); |
||
| 544 | $this->ParseVorbisCommentsFilepointer($getid3->fp, $getid3->info); |
||
| 545 | fseek($getid3->fp, $old_offset, SEEK_SET); |
||
| 546 | break; |
||
| 547 | |||
| 548 | case 'CUESHEET': |
||
| 549 | if (!$this->FLACparseCUESHEET($getid3->info['flac'][$meta_data_block_type_text]['raw']['block_data'])) { |
||
| 550 | return false; |
||
| 551 | } |
||
| 552 | break; |
||
| 553 | |||
| 554 | case 'PICTURE': |
||
| 555 | if (!$this->FLACparsePICTURE($getid3->info['flac'][$meta_data_block_type_text]['raw']['block_data'])) { |
||
| 556 | return false; |
||
| 557 | } |
||
| 558 | break; |
||
| 559 | |||
| 560 | default: |
||
| 561 | $getid3->warning('Unhandled METADATA_BLOCK_HEADER.BLOCK_TYPE (' . $meta_data_block_type . ') at offset ' . $meta_data_block_offset); |
||
| 562 | } |
||
| 563 | } while (false === $meta_data_last_block_flag); |
||
| 564 | |||
| 565 | if (isset($getid3->info['flac']['STREAMINFO'])) { |
||
| 566 | $getid3->info['flac']['compressed_audio_bytes'] = $getid3->info['avdataend'] - $getid3->info['avdataoffset']; |
||
| 567 | $getid3->info['flac']['uncompressed_audio_bytes'] = $getid3->info['flac']['STREAMINFO']['samples_stream'] * $getid3->info['flac']['STREAMINFO']['channels'] * ($getid3->info['flac']['STREAMINFO']['bits_per_sample'] / 8); |
||
| 568 | $getid3->info['flac']['compression_ratio'] = $getid3->info['flac']['compressed_audio_bytes'] / $getid3->info['flac']['uncompressed_audio_bytes']; |
||
| 569 | } |
||
| 570 | |||
| 571 | // set md5_data_source - built into flac 0.5+ |
||
| 572 | if (isset($getid3->info['flac']['STREAMINFO']['audio_signature'])) { |
||
| 573 | if ($getid3->info['flac']['STREAMINFO']['audio_signature'] === str_repeat("\x00", 16)) { |
||
| 574 | $getid3->warning('FLAC STREAMINFO.audio_signature is null (known issue with libOggFLAC)'); |
||
| 575 | } else { |
||
| 576 | $getid3->info['md5_data_source'] = ''; |
||
| 577 | $md5 = $getid3->info['flac']['STREAMINFO']['audio_signature']; |
||
| 578 | for ($i = 0; $i < strlen($md5); $i++) { |
||
| 579 | $getid3->info['md5_data_source'] .= str_pad(dechex(ord($md5{$i})), 2, '00', STR_PAD_LEFT); |
||
| 580 | } |
||
| 581 | if (!preg_match('/^[0-9a-f]{32}$/', $getid3->info['md5_data_source'])) { |
||
| 582 | unset($getid3->info['md5_data_source']); |
||
| 583 | } |
||
| 584 | } |
||
| 585 | } |
||
| 586 | |||
| 587 | $getid3->info['audio']['bits_per_sample'] = $getid3->info['flac']['STREAMINFO']['bits_per_sample']; |
||
| 588 | if (8 == $getid3->info['audio']['bits_per_sample']) { |
||
| 589 | // special case |
||
| 590 | // must invert sign bit on all data bytes before MD5'ing to match FLAC's calculated value |
||
| 591 | // MD5sum calculates on unsigned bytes, but FLAC calculated MD5 on 8-bit audio data as signed |
||
| 592 | $getid3->warning('FLAC calculates MD5 data strangely on 8-bit audio, so the stored md5_data_source value will not match the decoded WAV file'); |
||
| 593 | } |
||
| 594 | if (!empty($getid3->info['ogg']['vendor'])) { |
||
| 595 | $getid3->info['audio']['encoder'] = $getid3->info['ogg']['vendor']; |
||
| 596 | } |
||
| 597 | |||
| 598 | return true; |
||
| 599 | } |
||
| 600 | |||
| 601 | private function FLACparseSTREAMINFO($meta_data_block_data) |
||
| 602 | { |
||
| 603 | $getid3 = $this->getid3; |
||
| 604 | |||
| 605 | getid3_lib::ReadSequence( |
||
| 606 | 'BigEndian2Int', |
||
| 607 | $getid3->info['flac']['STREAMINFO'], |
||
| 608 | $meta_data_block_data, |
||
| 609 | 0, |
||
| 610 | [ |
||
| 611 | 'min_block_size' => 2, |
||
| 612 | 'max_block_size' => 2, |
||
| 613 | 'min_frame_size' => 3, |
||
| 614 | 'max_frame_size' => 3 |
||
| 615 | ] |
||
| 616 | ); |
||
| 617 | |||
| 618 | $sample_rate_channels_sample_bits_stream_samples = getid3_lib::BigEndian2Bin(substr($meta_data_block_data, 10, 8)); |
||
| 619 | |||
| 620 | $getid3->info['flac']['STREAMINFO']['sample_rate'] = bindec(substr($sample_rate_channels_sample_bits_stream_samples, 0, 20)); |
||
| 621 | $getid3->info['flac']['STREAMINFO']['channels'] = bindec(substr($sample_rate_channels_sample_bits_stream_samples, 20, 3)) + 1; |
||
| 622 | $getid3->info['flac']['STREAMINFO']['bits_per_sample'] = bindec(substr($sample_rate_channels_sample_bits_stream_samples, 23, 5)) + 1; |
||
| 623 | $getid3->info['flac']['STREAMINFO']['samples_stream'] = bindec(substr($sample_rate_channels_sample_bits_stream_samples, 28, 36)); // bindec() returns float in case of int overrun |
||
| 624 | $getid3->info['flac']['STREAMINFO']['audio_signature'] = substr($meta_data_block_data, 18, 16); |
||
| 625 | |||
| 626 | if (!empty($getid3->info['flac']['STREAMINFO']['sample_rate'])) { |
||
| 627 | $getid3->info['audio']['bitrate_mode'] = 'vbr'; |
||
| 628 | $getid3->info['audio']['sample_rate'] = $getid3->info['flac']['STREAMINFO']['sample_rate']; |
||
| 629 | $getid3->info['audio']['channels'] = $getid3->info['flac']['STREAMINFO']['channels']; |
||
| 630 | $getid3->info['audio']['bits_per_sample'] = $getid3->info['flac']['STREAMINFO']['bits_per_sample']; |
||
| 631 | $getid3->info['playtime_seconds'] = $getid3->info['flac']['STREAMINFO']['samples_stream'] / $getid3->info['flac']['STREAMINFO']['sample_rate']; |
||
| 632 | $getid3->info['audio']['bitrate'] = (($getid3->info['avdataend'] - $getid3->info['avdataoffset']) * 8) / $getid3->info['playtime_seconds']; |
||
| 633 | } else { |
||
| 634 | throw new getid3_exception('Corrupt METAdata block: STREAMINFO'); |
||
| 635 | } |
||
| 636 | |||
| 637 | unset($getid3->info['flac']['STREAMINFO']['raw']); |
||
| 638 | |||
| 639 | return true; |
||
| 640 | } |
||
| 641 | |||
| 642 | private function FLACparseAPPLICATION($meta_data_block_data) |
||
| 643 | { |
||
| 644 | $getid3 = $this->getid3; |
||
| 645 | |||
| 646 | $application_id = getid3_lib::BigEndian2Int(substr($meta_data_block_data, 0, 4)); |
||
| 647 | |||
| 648 | $getid3->info['flac']['APPLICATION'][$application_id]['name'] = getid3_xiph::FLACapplicationIDLookup($application_id); |
||
| 649 | $getid3->info['flac']['APPLICATION'][$application_id]['data'] = substr($meta_data_block_data, 4); |
||
| 650 | |||
| 651 | unset($getid3->info['flac']['APPLICATION']['raw']); |
||
| 652 | |||
| 653 | return true; |
||
| 654 | } |
||
| 655 | |||
| 656 | private function FLACparseSEEKTABLE($meta_data_block_data) |
||
| 657 | { |
||
| 658 | $getid3 = $this->getid3; |
||
| 659 | |||
| 660 | $offset = 0; |
||
| 661 | $meta_data_block_length = strlen($meta_data_block_data); |
||
| 662 | while ($offset < $meta_data_block_length) { |
||
| 663 | $sample_number_string = substr($meta_data_block_data, $offset, 8); |
||
| 664 | $offset += 8; |
||
| 665 | if ("\xFF\xFF\xFF\xFF\xFF\xFF\xFF\xFF" == $sample_number_string) { |
||
| 666 | // placeholder point |
||
| 667 | @$getid3->info['flac']['SEEKTABLE']['placeholders']++; |
||
| 668 | $offset += 10; |
||
| 669 | } else { |
||
| 670 | $sample_number = getid3_lib::BigEndian2Int($sample_number_string); |
||
| 671 | |||
| 672 | $getid3->info['flac']['SEEKTABLE'][$sample_number]['offset'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 8)); |
||
| 673 | $offset += 8; |
||
| 674 | |||
| 675 | $getid3->info['flac']['SEEKTABLE'][$sample_number]['samples'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 2)); |
||
| 676 | $offset += 2; |
||
| 677 | } |
||
| 678 | } |
||
| 679 | |||
| 680 | unset($getid3->info['flac']['SEEKTABLE']['raw']); |
||
| 681 | |||
| 682 | return true; |
||
| 683 | } |
||
| 684 | |||
| 685 | private function FLACparseCUESHEET($meta_data_block_data) |
||
| 686 | { |
||
| 687 | $getid3 = $this->getid3; |
||
| 688 | |||
| 689 | $getid3->info['flac']['CUESHEET']['media_catalog_number'] = trim(substr($meta_data_block_data, 0, 128), "\0"); |
||
| 690 | $getid3->info['flac']['CUESHEET']['lead_in_samples'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, 128, 8)); |
||
| 691 | $getid3->info['flac']['CUESHEET']['flags']['is_cd'] = (bool)(getid3_lib::BigEndian2Int($meta_data_block_data[136]) & 0x80); |
||
| 692 | $getid3->info['flac']['CUESHEET']['number_tracks'] = getid3_lib::BigEndian2Int($meta_data_block_data[395]); |
||
| 693 | |||
| 694 | $offset = 396; |
||
| 695 | |||
| 696 | for ($track = 0; $track < $getid3->info['flac']['CUESHEET']['number_tracks']; $track++) { |
||
| 697 | $track_sample_offset = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 8)); |
||
| 698 | $offset += 8; |
||
| 699 | |||
| 700 | $track_number = getid3_lib::BigEndian2Int($meta_data_block_data{$offset++}); |
||
| 701 | |||
| 702 | $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['sample_offset'] = $track_sample_offset; |
||
| 703 | $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['isrc'] = substr($meta_data_block_data, $offset, 12); |
||
| 704 | $offset += 12; |
||
| 705 | |||
| 706 | $track_flags_raw = getid3_lib::BigEndian2Int($meta_data_block_data{$offset++}); |
||
| 707 | $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['flags']['is_audio'] = (bool)($track_flags_raw & 0x80); |
||
| 708 | $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['flags']['pre_emphasis'] = (bool)($track_flags_raw & 0x40); |
||
| 709 | |||
| 710 | $offset += 13; // reserved |
||
| 711 | |||
| 712 | $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['index_points'] = getid3_lib::BigEndian2Int($meta_data_block_data{$offset++}); |
||
| 713 | |||
| 714 | for ($index = 0; $index < $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['index_points']; $index++) { |
||
| 715 | $index_sample_offset = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 8)); |
||
| 716 | $offset += 8; |
||
| 717 | |||
| 718 | $index_number = getid3_lib::BigEndian2Int($meta_data_block_data{$offset++}); |
||
| 719 | $getid3->info['flac']['CUESHEET']['tracks'][$track_number]['indexes'][$index_number] = $index_sample_offset; |
||
| 720 | |||
| 721 | $offset += 3; // reserved |
||
| 722 | } |
||
| 723 | } |
||
| 724 | |||
| 725 | unset($getid3->info['flac']['CUESHEET']['raw']); |
||
| 726 | |||
| 727 | return true; |
||
| 728 | } |
||
| 729 | |||
| 730 | private function FLACparsePICTURE($meta_data_block_data) |
||
| 731 | { |
||
| 732 | $getid3 = $this->getid3; |
||
| 733 | |||
| 734 | $picture = &$getid3->info['flac']['PICTURE'][sizeof($getid3->info['flac']['PICTURE']) - 1]; |
||
| 735 | |||
| 736 | $offset = 0; |
||
| 737 | |||
| 738 | $picture['type'] = $this->FLACpictureTypeLookup(getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4))); |
||
| 739 | $offset += 4; |
||
| 740 | |||
| 741 | $length = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 742 | $offset += 4; |
||
| 743 | |||
| 744 | $picture['mime_type'] = substr($meta_data_block_data, $offset, $length); |
||
| 745 | $offset += $length; |
||
| 746 | |||
| 747 | $length = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 748 | $offset += 4; |
||
| 749 | |||
| 750 | $picture['description'] = substr($meta_data_block_data, $offset, $length); |
||
| 751 | $offset += $length; |
||
| 752 | |||
| 753 | $picture['width'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 754 | $offset += 4; |
||
| 755 | |||
| 756 | $picture['height'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 757 | $offset += 4; |
||
| 758 | |||
| 759 | $picture['color_depth'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 760 | $offset += 4; |
||
| 761 | |||
| 762 | $picture['colors_indexed'] = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 763 | $offset += 4; |
||
| 764 | |||
| 765 | $length = getid3_lib::BigEndian2Int(substr($meta_data_block_data, $offset, 4)); |
||
| 766 | $offset += 4; |
||
| 767 | |||
| 768 | $picture['image_data'] = substr($meta_data_block_data, $offset, $length); |
||
| 769 | $offset += $length; |
||
| 770 | |||
| 771 | unset($getid3->info['flac']['PICTURE']['raw']); |
||
| 772 | |||
| 773 | return true; |
||
| 774 | } |
||
| 775 | |||
| 776 | public static function SpeexBandModeLookup($mode) |
||
| 777 | { |
||
| 778 | static $lookup = [ |
||
| 779 | 0 => 'narrow', |
||
| 780 | 1 => 'wide', |
||
| 781 | 2 => 'ultra-wide' |
||
| 782 | ]; |
||
| 783 | return (isset($lookup[$mode]) ? $lookup[$mode] : null); |
||
| 784 | } |
||
| 785 | |||
| 786 | public static function OggPageSegmentLength($ogg_info_array, $segment_number = 1) |
||
| 787 | { |
||
| 788 | for ($i = 0; $i < $segment_number; $i++) { |
||
| 789 | $segment_length = 0; |
||
| 790 | foreach ($ogg_info_array['segment_table'] as $key => $value) { |
||
| 791 | $segment_length += $value; |
||
| 792 | if ($value < 255) { |
||
| 793 | break; |
||
| 794 | } |
||
| 795 | } |
||
| 796 | } |
||
| 797 | return $segment_length; |
||
| 798 | } |
||
| 799 | |||
| 800 | public static function GetQualityFromNominalBitrate($nominal_bitrate) |
||
| 819 | } |
||
| 820 | |||
| 821 | public static function FLACmetaBlockTypeLookup($block_type) |
||
| 822 | { |
||
| 823 | static $lookup = [ |
||
| 824 | 0 => 'STREAMINFO', |
||
| 825 | 1 => 'PADDING', |
||
| 826 | 2 => 'APPLICATION', |
||
| 827 | 3 => 'SEEKTABLE', |
||
| 828 | 4 => 'VORBIS_COMMENT', |
||
| 829 | 5 => 'CUESHEET', |
||
| 830 | 6 => 'PICTURE' |
||
| 831 | ]; |
||
| 832 | return (isset($lookup[$block_type]) ? $lookup[$block_type] : 'reserved'); |
||
| 833 | } |
||
| 834 | |||
| 835 | public static function FLACapplicationIDLookup($application_id) |
||
| 836 | { |
||
| 837 | // http://flac.sourceforge.net/id.html |
||
| 838 | |||
| 839 | static $lookup = [ |
||
| 840 | 0x46746F6C => 'flac-tools', // 'Ftol' |
||
| 841 | 0x46746F6C => 'Sound Font FLAC', // 'SFFL' |
||
| 842 | 0x7065656D => 'Parseable Embedded Extensible Metadata (specification)', // 'peem' |
||
| 843 | 0x786D6364 => 'xmcd' |
||
| 844 | |||
| 845 | ]; |
||
| 846 | return (isset($lookup[$application_id]) ? $lookup[$application_id] : 'reserved'); |
||
| 847 | } |
||
| 848 | |||
| 849 | public static function FLACpictureTypeLookup($type_id) |
||
| 876 | } |
||
| 877 | |||
| 878 | } |
||
| 879 | |||
| 880 | |||
| 881 |
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