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Diffstat (limited to 'getid3/module.audio.dss.php')
| -rw-r--r-- | getid3/module.audio.dss.php | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/getid3/module.audio.dss.php b/getid3/module.audio.dss.php new file mode 100644 index 0000000..b088739 --- /dev/null +++ b/getid3/module.audio.dss.php @@ -0,0 +1,72 @@ +<?php +///////////////////////////////////////////////////////////////// +/// getID3() by James Heinrich <info@getid3.org> // +// available at http://getid3.sourceforge.net // +// or http://www.getid3.org // +///////////////////////////////////////////////////////////////// +// See readme.txt for more details // +///////////////////////////////////////////////////////////////// +// // +// module.audio.au.php // +// module for analyzing Digital Speech Standard (DSS) files // +// dependencies: NONE // +// /// +///////////////////////////////////////////////////////////////// + + +class getid3_dss +{ + + function getid3_dss(&$fd, &$ThisFileInfo) { + + fseek($fd, $ThisFileInfo['avdataoffset'], SEEK_SET); + $DSSheader = fread($fd, 1256); + + if (substr($DSSheader, 0, 4) != "\x02".'dss') { + $ThisFileInfo['error'][] = 'Expecting "[x02]dss" at offset '.$ThisFileInfo['avdataoffset'].', found "'.substr($DSSheader, 0, 4).'"'; + return false; + } + + // some structure information taken from http://cpansearch.perl.org/src/RGIBSON/Audio-DSS-0.02/lib/Audio/DSS.pm + + // shortcut + $ThisFileInfo['dss'] = array(); + $thisfile_dss = &$ThisFileInfo['dss']; + + $ThisFileInfo['fileformat'] = 'dss'; + $ThisFileInfo['audio']['dataformat'] = 'dss'; + $ThisFileInfo['audio']['bitrate_mode'] = 'cbr'; + //$thisfile_dss['encoding'] = 'ISO-8859-1'; + + $thisfile_dss['date_create'] = $this->DSSdateStringToUnixDate(substr($DSSheader, 38, 12)); + $thisfile_dss['date_complete'] = $this->DSSdateStringToUnixDate(substr($DSSheader, 50, 12)); + $thisfile_dss['length'] = intval(substr($DSSheader, 62, 6)); + $thisfile_dss['priority'] = ord(substr($DSSheader, 793, 1)); + $thisfile_dss['comments'] = trim(substr($DSSheader, 798, 100)); + + + //$ThisFileInfo['audio']['bits_per_sample'] = ?; + //$ThisFileInfo['audio']['sample_rate'] = ?; + $ThisFileInfo['audio']['channels'] = 1; + + $ThisFileInfo['playtime_seconds'] = $thisfile_dss['length']; + $ThisFileInfo['audio']['bitrate'] = ($ThisFileInfo['filesize'] * 8) / $ThisFileInfo['playtime_seconds']; + + return true; + } + + function DSSdateStringToUnixDate($datestring) { + $y = substr($datestring, 0, 2); + $m = substr($datestring, 2, 2); + $d = substr($datestring, 4, 2); + $h = substr($datestring, 6, 2); + $i = substr($datestring, 8, 2); + $s = substr($datestring, 10, 2); + $y += (($y < 95) ? 2000 : 1900); + return mktime($h, $i, $s, $m, $d, $y); + } + +} + + +?>
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