File indexing completed on 2024-05-12 17:25:57
0001 <?php 0002 ///////////////////////////////////////////////////////////////// 0003 /// getID3() by James Heinrich <info@getid3.org> // 0004 // available at http://getid3.sourceforge.net // 0005 // or http://www.getid3.org // 0006 // also https://github.com/JamesHeinrich/getID3 // 0007 ///////////////////////////////////////////////////////////////// 0008 // See readme.txt for more details // 0009 ///////////////////////////////////////////////////////////////// 0010 // // 0011 // module.audio.aa.php // 0012 // module for analyzing Audible Audiobook files // 0013 // dependencies: NONE // 0014 // /// 0015 ///////////////////////////////////////////////////////////////// 0016 0017 0018 class getid3_aa extends getid3_handler 0019 { 0020 0021 public function Analyze() { 0022 $info = &$this->getid3->info; 0023 0024 $this->fseek($info['avdataoffset']); 0025 $AAheader = $this->fread(8); 0026 0027 $magic = "\x57\x90\x75\x36"; 0028 if (substr($AAheader, 4, 4) != $magic) { 0029 $info['error'][] = 'Expecting "'.getid3_lib::PrintHexBytes($magic).'" at offset '.$info['avdataoffset'].', found "'.getid3_lib::PrintHexBytes(substr($AAheader, 4, 4)).'"'; 0030 return false; 0031 } 0032 0033 // shortcut 0034 $info['aa'] = array(); 0035 $thisfile_aa = &$info['aa']; 0036 0037 $info['fileformat'] = 'aa'; 0038 $info['audio']['dataformat'] = 'aa'; 0039 $info['error'][] = 'Audible Audiobook (.aa) parsing not enabled in this version of getID3() ['.$this->getid3->version().']'; 0040 return false; 0041 $info['audio']['bitrate_mode'] = 'cbr'; // is it? 0042 $thisfile_aa['encoding'] = 'ISO-8859-1'; 0043 0044 $thisfile_aa['filesize'] = getid3_lib::BigEndian2Int(substr($AUheader, 0, 4)); 0045 if ($thisfile_aa['filesize'] > ($info['avdataend'] - $info['avdataoffset'])) { 0046 $info['warning'][] = 'Possible truncated file - expecting "'.$thisfile_aa['filesize'].'" bytes of data, only found '.($info['avdataend'] - $info['avdataoffset']).' bytes"'; 0047 } 0048 0049 $info['audio']['bits_per_sample'] = 16; // is it? 0050 $info['audio']['sample_rate'] = $thisfile_aa['sample_rate']; 0051 $info['audio']['channels'] = $thisfile_aa['channels']; 0052 0053 //$info['playtime_seconds'] = 0; 0054 //$info['audio']['bitrate'] = 0; 0055 0056 return true; 0057 } 0058 0059 }