58 lines
2.2 KiB
PHP
58 lines
2.2 KiB
PHP
<?php
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/////////////////////////////////////////////////////////////////
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/// getID3() by James Heinrich <info@getid3.org> //
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// available at http://getid3.sourceforge.net //
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// or http://www.getid3.org //
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/////////////////////////////////////////////////////////////////
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// See readme.txt for more details //
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/////////////////////////////////////////////////////////////////
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// //
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// module.audio.aa.php //
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// module for analyzing Audible Audiobook files //
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// dependencies: NONE //
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// ///
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/////////////////////////////////////////////////////////////////
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class getid3_aa
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{
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function getid3_aa(&$fd, &$ThisFileInfo) {
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fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET);
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$AAheader = fread($fd, 8);
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$magic = "\x57\x90\x75\x36";
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if (substr($AAheader, 4, 4) != $magic) {
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$ThisFileInfo['error'][] = 'Expecting "'.PrintHexBytes($magic).'" at offset '.$ThisFileInfo['avdataoffset'].', found "'.PrintHexBytes(substr($AAheader, 4, 4)).'"';
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return false;
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}
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// shortcut
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$ThisFileInfo['aa'] = array();
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$thisfile_au = &$ThisFileInfo['aa'];
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$ThisFileInfo['fileformat'] = 'aa';
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$ThisFileInfo['audio']['dataformat'] = 'aa';
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$ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; // is it?
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$thisfile_au['encoding'] = 'ISO-8859-1';
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$thisfile_au['filesize'] = getid3_lib::BigEndian2Int(substr($AUheader, 0, 4));
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if ($thisfile_au['filesize'] > ($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset'])) {
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$ThisFileInfo['warning'][] = 'Possible truncated file - expecting "'.$thisfile_au['filesize'].'" bytes of data, only found '.($ThisFileInfo['avdataend'] - $ThisFileInfo['avdataoffset']).' bytes"';
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}
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$ThisFileInfo['audio']['bits_per_sample'] = 16; // is it?
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$ThisFileInfo['audio']['sample_rate'] = $thisfile_au['sample_rate'];
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$ThisFileInfo['audio']['channels'] = $thisfile_au['channels'];
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//$ThisFileInfo['playtime_seconds'] = 0;
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//$ThisFileInfo['audio']['bitrate'] = 0;
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return true;
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}
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}
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?>
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