module.audio.mod.php

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<?php
//  available at http://getid3.sourceforge.net                 //
//            or http://www.getid3.org                         //
// See readme.txt for more details                             //
//                                                             //
// module.audio.mod.php                                        //
// module for analyzing MOD Audio files                        //
// dependencies: NONE                                          //
//                                                            ///


class getid3_mod
{

        // new combined constructor
        function getid3_mod(&$fd, &$ThisFileInfo, $option) {

                if ($option === 'mod') {
                        $this->getMODheaderFilepointer($fd, $ThisFileInfo);
                }
                elseif ($option === 'xm') {
                        $this->getXMheaderFilepointer($fd, $ThisFileInfo);
                }
                elseif ($option === 'it') {
                        $this->getITheaderFilepointer($fd, $ThisFileInfo);
                }
                elseif ($option === 's3m') {
                        $this->getS3MheaderFilepointer($fd, $ThisFileInfo);
                }
        }


        function getMODheaderFilepointer(&$fd, &$ThisFileInfo) {

                fseek($fd, $ThisFileInfo['avdataoffset'] + 1080);
                $FormatID = fread($fd, 4);
                if (!ereg('^(M.K.|[5-9]CHN|[1-3][0-9]CH)$', $FormatID)) {
                        $ThisFileInfo['error'][] = 'This is not a known type of MOD file';
                        return false;
                }

                $ThisFileInfo['fileformat'] = 'mod';

                $ThisFileInfo['error'][] = 'MOD parsing not enabled in this version of getID3()';
                return false;
        }

        function getXMheaderFilepointer(&$fd, &$ThisFileInfo) {

                fseek($fd, $ThisFileInfo['avdataoffset']);
                $FormatID = fread($fd, 15);
                if (!ereg('^Extended Module$', $FormatID)) {
                        $ThisFileInfo['error'][] = 'This is not a known type of XM-MOD file';
                        return false;
                }

                $ThisFileInfo['fileformat'] = 'xm';

                $ThisFileInfo['error'][] = 'XM-MOD parsing not enabled in this version of getID3()';
                return false;
        }

        function getS3MheaderFilepointer(&$fd, &$ThisFileInfo) {

                fseek($fd, $ThisFileInfo['avdataoffset'] + 44);
                $FormatID = fread($fd, 4);
                if (!ereg('^SCRM$', $FormatID)) {
                        $ThisFileInfo['error'][] = 'This is not a ScreamTracker MOD file';
                        return false;
                }

                $ThisFileInfo['fileformat'] = 's3m';

                $ThisFileInfo['error'][] = 'ScreamTracker parsing not enabled in this version of getID3()';
                return false;
        }

        function getITheaderFilepointer(&$fd, &$ThisFileInfo) {

                fseek($fd, $ThisFileInfo['avdataoffset']);
                $FormatID = fread($fd, 4);
                if (!ereg('^IMPM$', $FormatID)) {
                        $ThisFileInfo['error'][] = 'This is not an ImpulseTracker MOD file';
                        return false;
                }

                $ThisFileInfo['fileformat'] = 'it';

                $ThisFileInfo['error'][] = 'ImpulseTracker parsing not enabled in this version of getID3()';
                return false;
        }

}


?>