www/plugins-dist/medias/lib/getid3/module.audio.mod.php

   1 <?php
   2
   3 /////////////////////////////////////////////////////////////////
   4 /// getID3() by James Heinrich <info@getid3.org>               //
   5 //  available at https://github.com/JamesHeinrich/getID3       //
   6 //            or https://www.getid3.org                        //
   7 //            or http://getid3.sourceforge.net                 //
   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          * @return bool
  22          */
  23         public function Analyze() {
  24                 $info = &$this->getid3->info;
  25                 $this->fseek($info['avdataoffset']);
  26                 $fileheader = $this->fread(1088);
  27                 if (preg_match('#^IMPM#', $fileheader)) {
  28                         return $this->getITheaderFilepointer();
  29                 } elseif (preg_match('#^Extended Module#', $fileheader)) {
  30                         return $this->getXMheaderFilepointer();
  31                 } elseif (preg_match('#^.{44}SCRM#', $fileheader)) {
  32                         return $this->getS3MheaderFilepointer();
  33                 } elseif (preg_match('#^.{1080}(M\\.K\\.|M!K!|FLT4|FLT8|[5-9]CHN|[1-3][0-9]CH)#', $fileheader)) {
  34                         return $this->getMODheaderFilepointer();
  35                 }
  36                 $this->error('This is not a known type of MOD file');
  37                 return false;
  38         }
  39
  40         /**
  41          * @return bool
  42          */
  43         public function getMODheaderFilepointer() {
  44                 $info = &$this->getid3->info;
  45                 $this->fseek($info['avdataoffset'] + 1080);
  46                 $FormatID = $this->fread(4);
  47                 if (!preg_match('#^(M.K.|[5-9]CHN|[1-3][0-9]CH)$#', $FormatID)) {
  48                         $this->error('This is not a known type of MOD file');
  49                         return false;
  50                 }
  51
  52                 $info['fileformat'] = 'mod';
  53
  54                 $this->error('MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  55                 return false;
  56         }
  57
  58         /**
  59          * @return bool
  60          */
  61         public function getXMheaderFilepointer() {
  62                 $info = &$this->getid3->info;
  63                 $this->fseek($info['avdataoffset']);
  64                 $FormatID = $this->fread(15);
  65                 if (!preg_match('#^Extended Module$#', $FormatID)) {
  66                         $this->error('This is not a known type of XM-MOD file');
  67                         return false;
  68                 }
  69
  70                 $info['fileformat'] = 'xm';
  71
  72                 $this->error('XM-MOD parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  73                 return false;
  74         }
  75
  76         /**
  77          * @return bool
  78          */
  79         public function getS3MheaderFilepointer() {
  80                 $info = &$this->getid3->info;
  81                 $this->fseek($info['avdataoffset'] + 44);
  82                 $FormatID = $this->fread(4);
  83                 if (!preg_match('#^SCRM$#', $FormatID)) {
  84                         $this->error('This is not a ScreamTracker MOD file');
  85                         return false;
  86                 }
  87
  88                 $info['fileformat'] = 's3m';
  89
  90                 $this->error('ScreamTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
  91                 return false;
  92         }
  93
  94         /**
  95          * @return bool
  96          */
  97         public function getITheaderFilepointer() {
  98                 $info = &$this->getid3->info;
  99                 $this->fseek($info['avdataoffset']);
 100                 $FormatID = $this->fread(4);
 101                 if (!preg_match('#^IMPM$#', $FormatID)) {
 102                         $this->error('This is not an ImpulseTracker MOD file');
 103                         return false;
 104                 }
 105
 106                 $info['fileformat'] = 'it';
 107
 108                 $this->error('ImpulseTracker parsing not enabled in this version of getID3() ['.$this->getid3->version().']');
 109                 return false;
 110         }
 111
 112 }