100 lines
3.3 KiB
PHP
100 lines
3.3 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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// also https://github.com/JamesHeinrich/getID3 //
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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.mod.php //
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// module for analyzing MOD Audio files //
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// dependencies: NONE //
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// ///
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/////////////////////////////////////////////////////////////////
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class getid3_mod extends getid3_handler
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{
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public function Analyze() {
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$info = &$this->getid3->info;
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$this->fseek($info['avdataoffset']);
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$fileheader = $this->fread(1088);
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if (preg_match('#^IMPM#', $fileheader)) {
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return $this->getITheaderFilepointer();
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} elseif (preg_match('#^Extended Module#', $fileheader)) {
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return $this->getXMheaderFilepointer();
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} elseif (preg_match('#^.{44}SCRM#', $fileheader)) {
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return $this->getS3MheaderFilepointer();
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} elseif (preg_match('#^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)#', $fileheader)) {
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return $this->getMODheaderFilepointer();
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}
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$this->error('This is not a known type of MOD file');
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return false;
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}
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public function getMODheaderFilepointer() {
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$info = &$this->getid3->info;
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$this->fseek($info['avdataoffset'] + 1080);
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$FormatID = $this->fread(4);
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if (!preg_match('#^(M.K.|[5-9]CHN|[1-3][0-9]CH)$#', $FormatID)) {
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$this->error('This is not a known type of MOD file');
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return false;
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}
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$info['fileformat'] = 'mod';
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$this->error('MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
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return false;
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}
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public function getXMheaderFilepointer() {
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$info = &$this->getid3->info;
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$this->fseek($info['avdataoffset']);
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$FormatID = $this->fread(15);
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if (!preg_match('#^Extended Module$#', $FormatID)) {
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$this->error('This is not a known type of XM-MOD file');
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return false;
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}
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$info['fileformat'] = 'xm';
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$this->error('XM-MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
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return false;
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}
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public function getS3MheaderFilepointer() {
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$info = &$this->getid3->info;
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$this->fseek($info['avdataoffset'] + 44);
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$FormatID = $this->fread(4);
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if (!preg_match('#^SCRM$#', $FormatID)) {
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$this->error('This is not a ScreamTracker MOD file');
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return false;
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}
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$info['fileformat'] = 's3m';
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$this->error('ScreamTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
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return false;
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}
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public function getITheaderFilepointer() {
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$info = &$this->getid3->info;
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$this->fseek($info['avdataoffset']);
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$FormatID = $this->fread(4);
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if (!preg_match('#^IMPM$#', $FormatID)) {
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$this->error('This is not an ImpulseTracker MOD file');
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return false;
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}
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$info['fileformat'] = 'it';
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$this->error('ImpulseTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
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return false;
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}
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}
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