X-Git-Url: http://git.cyclocoop.org/?a=blobdiff_plain;f=www%2Fplugins-dist%2Fmedias%2Flib%2Fgetid3%2Fmodule.audio.dsf.php;fp=www%2Fplugins-dist%2Fmedias%2Flib%2Fgetid3%2Fmodule.audio.dsf.php;h=50be37c321bbf7d76bc8f06442c2af0219ce63ae;hb=4f443dce95ff6f8221c189880a70c74ce1c1f238;hp=0000000000000000000000000000000000000000;hpb=4a628e9b277d3617535f99d663ca79fa2e891177;p=lhc%2Fweb%2Fwww.git diff --git a/www/plugins-dist/medias/lib/getid3/module.audio.dsf.php b/www/plugins-dist/medias/lib/getid3/module.audio.dsf.php new file mode 100644 index 00000000..50be37c3 --- /dev/null +++ b/www/plugins-dist/medias/lib/getid3/module.audio.dsf.php @@ -0,0 +1,133 @@ + // +// available at http://getid3.sourceforge.net // +// or http://www.getid3.org // +// also https://github.com/JamesHeinrich/getID3 // +///////////////////////////////////////////////////////////////// +// See readme.txt for more details // +///////////////////////////////////////////////////////////////// +// // +// module.audio.dsf.php // +// module for analyzing dsf/DSF Audio files // +// dependencies: module.tag.id3v2.php // +// /// +///////////////////////////////////////////////////////////////// + +getid3_lib::IncludeDependency(GETID3_INCLUDEPATH.'module.tag.id3v2.php', __FILE__, true); + +class getid3_dsf extends getid3_handler +{ + + public function Analyze() { + $info = &$this->getid3->info; + + $info['fileformat'] = 'dsf'; + $info['audio']['dataformat'] = 'dsf'; + $info['audio']['lossless'] = true; + $info['audio']['bitrate_mode'] = 'cbr'; + + $this->fseek($info['avdataoffset']); + $dsfheader = $this->fread(28 + 12); + + $headeroffset = 0; + $info['dsf']['dsd']['magic'] = substr($dsfheader, $headeroffset, 4); + $headeroffset += 4; + $magic = 'DSD '; + if ($info['dsf']['dsd']['magic'] != $magic) { + $this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes($info['dsf']['dsd']['magic']).'"'); + unset($info['fileformat']); + unset($info['audio']); + unset($info['dsf']); + return false; + } + $info['dsf']['dsd']['dsd_chunk_size'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); // should be 28 + $headeroffset += 8; + $info['dsf']['dsd']['dsf_file_size'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); + $headeroffset += 8; + $info['dsf']['dsd']['meta_chunk_offset'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); + $headeroffset += 8; + + + $info['dsf']['fmt']['magic'] = substr($dsfheader, $headeroffset, 4); + $headeroffset += 4; + $magic = 'fmt '; + if ($info['dsf']['fmt']['magic'] != $magic) { + $this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$headeroffset.', found "'.getid3_lib::PrintHexBytes($info['dsf']['fmt']['magic']).'"'); + return false; + } + $info['dsf']['fmt']['fmt_chunk_size'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); // usually 52 bytes + $headeroffset += 8; + $dsfheader .= $this->fread($info['dsf']['fmt']['fmt_chunk_size'] - 12 + 12); // we have already read the entire DSD chunk, plus 12 bytes of FMT. We now want to read the size of FMT, plus 12 bytes into the next chunk to get magic and size. + if (strlen($dsfheader) != ($info['dsf']['dsd']['dsd_chunk_size'] + $info['dsf']['fmt']['fmt_chunk_size'] + 12)) { + $this->error('Expecting '.($info['dsf']['dsd']['dsd_chunk_size'] + $info['dsf']['fmt']['fmt_chunk_size']).' bytes header, found '.strlen($dsfheader).' bytes'); + return false; + } + $info['dsf']['fmt']['format_version'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); // usually "1" + $headeroffset += 4; + $info['dsf']['fmt']['format_id'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); // usually "0" = "DSD Raw" + $headeroffset += 4; + $info['dsf']['fmt']['channel_type_id'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); + $headeroffset += 4; + $info['dsf']['fmt']['channels'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); + $headeroffset += 4; + $info['dsf']['fmt']['sample_rate'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); + $headeroffset += 4; + $info['dsf']['fmt']['bits_per_sample'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); + $headeroffset += 4; + $info['dsf']['fmt']['sample_count'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); + $headeroffset += 8; + $info['dsf']['fmt']['channel_block_size'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); + $headeroffset += 4; + $info['dsf']['fmt']['reserved'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 4)); // zero-filled + $headeroffset += 4; + + + $info['dsf']['data']['magic'] = substr($dsfheader, $headeroffset, 4); + $headeroffset += 4; + $magic = 'data'; + if ($info['dsf']['data']['magic'] != $magic) { + $this->error('Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$headeroffset.', found "'.getid3_lib::PrintHexBytes($info['dsf']['data']['magic']).'"'); + return false; + } + $info['dsf']['data']['data_chunk_size'] = getid3_lib::LittleEndian2Int(substr($dsfheader, $headeroffset, 8)); + $headeroffset += 8; + $info['avdataoffset'] = $headeroffset; + $info['avdataend'] = $info['avdataoffset'] + $info['dsf']['data']['data_chunk_size']; + + + if ($info['dsf']['dsd']['meta_chunk_offset'] > 0) { + $getid3_id3v2 = new getid3_id3v2($this->getid3); + $getid3_id3v2->StartingOffset = $info['dsf']['dsd']['meta_chunk_offset']; + $getid3_id3v2->Analyze(); + unset($getid3_id3v2); + } + + + $info['dsf']['fmt']['channel_type'] = $this->DSFchannelTypeLookup($info['dsf']['fmt']['channel_type_id']); + $info['audio']['channelmode'] = $info['dsf']['fmt']['channel_type']; + $info['audio']['bits_per_sample'] = $info['dsf']['fmt']['bits_per_sample']; + $info['audio']['sample_rate'] = $info['dsf']['fmt']['sample_rate']; + $info['audio']['channels'] = $info['dsf']['fmt']['channels']; + $info['audio']['bitrate'] = $info['audio']['bits_per_sample'] * $info['audio']['sample_rate'] * $info['audio']['channels']; + $info['playtime_seconds'] = ($info['dsf']['data']['data_chunk_size'] * 8) / $info['audio']['bitrate']; + + return true; + } + + + public static function DSFchannelTypeLookup($channel_type_id) { + static $DSFchannelTypeLookup = array( + // interleaving order: + 1 => 'mono', // 1: Mono + 2 => 'stereo', // 1: Front-Left; 2: Front-Right + 3 => '3-channel', // 1: Front-Left; 2: Front-Right; 3: Center + 4 => 'quad', // 1: Front-Left; 2: Front-Right; 3: Back-Left; 4: Back-Right + 5 => '4-channel', // 1: Front-Left; 2: Front-Right; 3: Center; 4: Low-Frequency + 6 => '5-channel', // 1: Front-Left; 2: Front-Right; 3: Center; 4: Back-Left 5: Back-Right + 7 => '5.1', // 1: Front-Left; 2: Front-Right; 3: Center; 4: Low-Frequency; 5: Back-Left; 6: Back-Right + ); + return (isset($DSFchannelTypeLookup[$channel_type_id]) ? $DSFchannelTypeLookup[$channel_type_id] : ''); + } + +}