vendor/james-heinrich/getid3/getid3/module.audio.mod.php

   1 <?php
   2 /////////////////////////////////////////////////////////////////
   3 /// getID3() by James Heinrich <info@getid3.org>               //
   4 //  available at http://getid3.sourceforge.net                 //
   5 //            or http://www.getid3.org                         //
   6 //          also https://github.com/JamesHeinrich/getID3       //
   7 /////////////////////////////////////////////////////////////////
   8 // See readme.txt for more details                             //
   9 /////////////////////////////////////////////////////////////////
  10 //                                                             //
  11 // module.audio.mod.php                                        //
  12 // module for analyzing MOD Audio files                        //
  13 // dependencies: NONE                                          //
  14 //                                                            ///
  15 /////////////////////////////////////////////////////////////////
  16
  17
  18 class getid3_mod extends getid3_handler
  19 {
  20
  21         public function Analyze() {
  22                 $info = &$this->getid3->info;
  23                 $this->fseek($info['avdataoffset']);
  24                 $fileheader = $this->fread(1088);
  25                 if (preg_match('#^IMPM#', $fileheader)) {
  26                         return $this->getITheaderFilepointer();
  27                 } elseif (preg_match('#^Extended Module#', $fileheader)) {
  28                         return $this->getXMheaderFilepointer();
  29                 } elseif (preg_match('#^.{44}SCRM#', $fileheader)) {
  30                         return $this->getS3MheaderFilepointer();
  31                 } elseif (preg_match('#^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)#', $fileheader)) {
  32                         return $this->getMODheaderFilepointer();
  33                 }
  34                 $this->error('This is not a known type of MOD file');
  35                 return false;
  36         }
  37
  38
  39         public function getMODheaderFilepointer() {
  40                 $info = &$this->getid3->info;
  41                 $this->fseek($info['avdataoffset'] + 1080);
  42                 $FormatID = $this->fread(4);
  43                 if (!preg_match('#^(M.K.|[5-9]CHN|[1-3][0-9]CH)$#', $FormatID)) {
  44                         $this->error('This is not a known type of MOD file');
  45                         return false;
  46                 }
  47
  48                 $info['fileformat'] = 'mod';
  49
  50                 $this->error('MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  51                 return false;
  52         }
  53
  54         public function getXMheaderFilepointer() {
  55                 $info = &$this->getid3->info;
  56                 $this->fseek($info['avdataoffset']);
  57                 $FormatID = $this->fread(15);
  58                 if (!preg_match('#^Extended Module$#', $FormatID)) {
  59                         $this->error('This is not a known type of XM-MOD file');
  60                         return false;
  61                 }
  62
  63                 $info['fileformat'] = 'xm';
  64
  65                 $this->error('XM-MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  66                 return false;
  67         }
  68
  69         public function getS3MheaderFilepointer() {
  70                 $info = &$this->getid3->info;
  71                 $this->fseek($info['avdataoffset'] + 44);
  72                 $FormatID = $this->fread(4);
  73                 if (!preg_match('#^SCRM$#', $FormatID)) {
  74                         $this->error('This is not a ScreamTracker MOD file');
  75                         return false;
  76                 }
  77
  78                 $info['fileformat'] = 's3m';
  79
  80                 $this->error('ScreamTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  81                 return false;
  82         }
  83
  84         public function getITheaderFilepointer() {
  85                 $info = &$this->getid3->info;
  86                 $this->fseek($info['avdataoffset']);
  87                 $FormatID = $this->fread(4);
  88                 if (!preg_match('#^IMPM$#', $FormatID)) {
  89                         $this->error('This is not an ImpulseTracker MOD file');
  90                         return false;
  91                 }
  92
  93                 $info['fileformat'] = 'it';
  94
  95                 $this->error('ImpulseTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  96                 return false;
  97         }
  98
  99 }