[Sommaire] [Imprimer]

   1  <?php
   2  # ***** BEGIN LICENSE BLOCK *****
   3  # This file is part of Clearbricks.
   4  # Copyright (c) 2006 Olivier Meunier and contributors. All rights
   5  # reserved.
   6  #
   7  # Clearbricks is free software; you can redistribute it and/or modify
   8  # it under the terms of the GNU General Public License as published by
   9  # the Free Software Foundation; either version 2 of the License, or
  10  # (at your option) any later version.
  11  # 
  12  # Clearbricks is distributed in the hope that it will be useful,
  13  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  # GNU General Public License for more details.
  16  # 
  17  # You should have received a copy of the GNU General Public License
  18  # along with Clearbricks; if not, write to the Free Software
  19  # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  #
  21  # ***** END LICENSE BLOCK *****
  22  #
  23  # Contributors:
  24  # - Mathieu Lecarme
  25  
  26  class imageMeta
  27  {
  28      protected $meta = array();
  29      protected $xmp = array();
  30      protected $iptc = array();
  31      protected $exif = array();
  32      
  33  	public static function readMeta($f)
  34      {
  35          $o = new self;
  36          $o->loadFile($f);
  37          return $o->getMeta();
  38      }
  39      
  40  	public function getMeta()
  41      {
  42          foreach ($this->properties as $k => $v)
  43          {
  44              if (!empty($this->xmp[$k])) {
  45                  $this->properties[$k] = $this->xmp[$k];
  46              } elseif (!empty($this->iptc[$k])) {
  47                  $this->properties[$k] = $this->iptc[$k];
  48              } elseif (!empty($this->exif[$k])) {
  49                  $this->properties[$k] = $this->exif[$k];
  50              }
  51          }
  52          
  53          # Fix date format
  54          $this->properties['DateTimeOriginal'] = preg_replace(
  55              '/^(\d{4}):(\d{2}):(\d{2})/','$1-$2-$3',
  56              $this->properties['DateTimeOriginal']
  57          );
  58          
  59          return $this->properties;
  60      }
  61      
  62  	public function loadFile($f)
  63      {
  64          if (!is_file($f) || !is_readable($f)) {
  65              throw new Exception('Unable to read file');
  66          }
  67          
  68          $this->readXMP($f);
  69          $this->readIPTC($f);
  70          $this->readExif($f);
  71      }
  72      
  73  	protected function readXMP($f)
  74      {
  75          if (($fp = @fopen($f,'rb')) === false) {
  76              throw new Exception('Unable to open image file');
  77          }
  78          
  79          $inside = false;
  80          $done = false;
  81          $xmp = null;
  82          
  83          while (!feof($fp))
  84          {
  85              $buffer = fgets($fp,4096);
  86              
  87              $xmp_start = strpos($buffer,'<x:xmpmeta');
  88              
  89              if ($xmp_start !== false) {
  90                  $buffer = substr($buffer,$xmp_start);
  91                  $inside = true;
  92              }
  93              
  94              if ($inside)
  95              {
  96                  $xmp_end = strpos($buffer,'</x:xmpmeta>');
  97                  if ($xmp_end !== false) {
  98                      $buffer = substr($buffer,$xmp_end,12);
  99                      $inside = false;
 100                      $done = true;
 101                  }
 102                  
 103                  $xmp .= $buffer;
 104              }
 105              
 106              if ($done) {
 107                  break;
 108              }
 109          }
 110          fclose($fp);
 111          
 112          if (!$xmp) {
 113              return;
 114          }
 115          
 116          foreach ($this->xmp_reg as $code => $patterns)
 117          {
 118              foreach ($patterns as $p)
 119              {
 120                  if (preg_match($p,$xmp,$m)) {
 121                      $this->xmp[$code] = $m[1];
 122                      break;
 123                  }
 124              }
 125          }
 126          
 127          if (preg_match('%<dc:subject>\s*<rdf:Bag>(.+?)</rdf:Bag%msu',$xmp,$m)
 128          && preg_match_all('%<rdf:li>(.+?)</rdf:li>%msu',$m[1],$m))
 129          {
 130              $this->xmp['Keywords'] = implode(',',$m[1]);
 131          }
 132          
 133          foreach ($this->xmp as $k => $v) {
 134              $this->xmp[$k] = html::decodeEntities(text::toUTF8($v));
 135          }
 136      }
 137      
 138  	protected function readIPTC($file)
 139      {
 140          if (!function_exists('iptcparse')) {
 141              return;
 142          }
 143          
 144          $imageinfo = null;
 145          @getimagesize($file,$imageinfo);
 146          
 147          if (!is_array($imageinfo) || !isset($imageinfo['APP13'])) {
 148              return;
 149          }
 150          
 151          $iptc = @iptcparse($imageinfo['APP13']);
 152          
 153          if (!is_array($iptc)) {
 154              return;
 155          }
 156          
 157          foreach ($this->iptc_ref as $k => $v)
 158          {
 159              if (isset($iptc[$k]) && isset($this->iptc_to_property[$v])) {
 160                  $this->iptc[$this->iptc_to_property[$v]] = text::toUTF8(trim(implode(',',$iptc[$k])));
 161              }
 162          }
 163      }
 164      
 165  	protected function readEXIF($f)
 166      {
 167          if (!function_exists('exif_read_data')) {
 168              return;
 169          }
 170          
 171          $d = @exif_read_data($f,'ANY_TAG');
 172          
 173          if (!is_array($d)) {
 174              return;
 175          }
 176          
 177          foreach ($this->exif_to_property as $k => $v)
 178          {
 179              if (isset($d[$k])) {
 180                  $this->exif[$v] = text::toUTF8($d[$k]);
 181              }
 182          }
 183      }
 184      
 185      /* Properties
 186      ------------------------------------------------------- */
 187      protected $properties = array(
 188          'Title' => null,
 189          'Description' => null,
 190          'Creator' => null,
 191          'Rights' => null,
 192          'Make' => null,
 193          'Model' => null,
 194          'Exposure' => null,
 195          'FNumber' => null,
 196          'MaxApertureValue' => null,
 197          'ExposureProgram' => null,
 198          'ISOSpeedRatings' => null,
 199          'DateTimeOriginal' => null,
 200          'ExposureBiasValue' => null,
 201          'MeteringMode' => null,
 202          'FocalLength' => null,
 203          'Lens' => null,
 204          'CountryCode' => null,
 205          'Country' => null,
 206          'State' => null,
 207          'City' => null,
 208          'Keywords' => null
 209      );
 210      
 211      # XMP
 212      protected $xmp_reg = array(
 213          'Title' => array(
 214              '%<dc:title>\s*<rdf:Alt>\s*<rdf:li.*?>(.+?)</rdf:li>%msu'
 215          ),
 216          'Description' => array(
 217              '%<dc:description>\s*<rdf:Alt>\s*<rdf:li.*?>(.+?)</rdf:li>%msu'
 218          ),
 219          'Creator' => array(
 220              '%<dc:creator>\s*<rdf:Seq>\s*<rdf:li>(.+?)</rdf:li>%msu'
 221          ),
 222          'Rights' => array(
 223              '%<dc:rights>\s*<rdf:Alt>\s*<rdf:li.*?>(.+?)</rdf:li>%msu'
 224          ),
 225          'Make' => array(
 226              '%<tiff:Make>(.+?)</tiff:Make>%msu',
 227              '%tiff:Make="(.+?)"%msu'
 228          ),
 229          'Model' => array(
 230              '%<tiff:Model>(.+?)</tiff:Model>%msu',
 231              '%tiff:Model="(.+?)"%msu'
 232          ),
 233          'Exposure' => array(
 234              '%<exif:ExposureTime>(.+?)</exif:ExposureTime>%msu',
 235              '%exif:ExposureTime="(.+?)"%msu'
 236          ),
 237          'FNumber' => array(
 238              '%<exif:FNumber>(.+?)</exif:FNumber>%msu',
 239              '%exif:FNumber="(.+?)"%msu'
 240          ),
 241          'MaxApertureValue' => array(
 242              '%<exif:MaxApertureValue>(.+?)</exif:MaxApertureValue>%msu',
 243              '%exif:MaxApertureValue="(.+?)"%msu'
 244          ),
 245          'ExposureProgram' => array(
 246              '%<exif:ExposureProgram>(.+?)</exif:ExposureProgram>%msu',
 247              '%exif:ExposureProgram="(.+?)"%msu'
 248          ),
 249          'ISOSpeedRatings' => array(
 250              '%<exif:ISOSpeedRatings>\s*<rdf:Seq>\s*<rdf:li>(.+?)</rdf:li>%msu'
 251          ),
 252          'DateTimeOriginal' => array(
 253              '%<exif:DateTimeOriginal>(.+?)</exif:DateTimeOriginal>%msu',
 254              '%exif:DateTimeOriginal="(.+?)"%msu'
 255          ),
 256          'ExposureBiasValue' => array(
 257              '%<exif:ExposureBiasValue>(.+?)</exif:ExposureBiasValue>%msu',
 258              '%exif:ExposureBiasValue="(.+?)"%msu'
 259          ),
 260          'MeteringMode' => array(
 261              '%<exif:MeteringMode>(.+?)</exif:MeteringMode>%msu',
 262              '%exif:MeteringMode="(.+?)"%msu'
 263          ),
 264          'FocalLength' => array(
 265              '%<exif:FocalLength>(.+?)</exif:FocalLength>%msu',
 266              '%exif:FocalLength="(.+?)"%msu'
 267          ),
 268          'Lens' => array(
 269              '%<aux:Lens>(.+?)</aux:Lens>%msu',
 270              '%aux:Lens="(.+?)"%msu'
 271          ),
 272          'CountryCode' => array(
 273              '%<Iptc4xmpCore:CountryCode>(.+?)</Iptc4xmpCore:CountryCode>%msu',
 274              '%Iptc4xmpCore:CountryCode="(.+?)"%msu'
 275          ),
 276          'Country' => array(
 277              '%<photoshop:Country>(.+?)</photoshop:Country>%msu',
 278              '%photoshop:Country="(.+?)"%msu'
 279          ),
 280          'State' => array(
 281              '%<photoshop:State>(.+?)</photoshop:State>%msu',
 282              '%photoshop:State="(.+?)"%msu'
 283          ),
 284          'City' => array(
 285              '%<photoshop:City>(.+?)</photoshop:City>%msu',
 286              '%photoshop:City="(.+?)"%msu'
 287          )
 288      );
 289      
 290      # IPTC
 291      protected $iptc_ref = array(
 292          '1#090' => 'Iptc.Envelope.CharacterSet',// Character Set used (32 chars max)
 293          '2#005' => 'Iptc.ObjectName',           // Title (64 chars max)
 294          '2#015' => 'Iptc.Category',             // (3 chars max)
 295          '2#020' => 'Iptc.Supplementals',        // Supplementals categories (32 chars max)
 296          '2#025' => 'Iptc.Keywords',             // (64 chars max)
 297          '2#040' => 'Iptc.SpecialsInstructions', // (256 chars max)
 298          '2#055' => 'Iptc.DateCreated',          // YYYYMMDD (8 num chars max)
 299          '2#060' => 'Iptc.TimeCreated',          // HHMMSS+/-HHMM (11 chars max)
 300          '2#062' => 'Iptc.DigitalCreationDate',  // YYYYMMDD (8 num chars max)
 301          '2#063' => 'Iptc.DigitalCreationTime',  // HHMMSS+/-HHMM (11 chars max)
 302          '2#080' => 'Iptc.ByLine',               // Author (32 chars max)
 303          '2#085' => 'Iptc.ByLineTitle',          // Author position (32 chars max)
 304          '2#090' => 'Iptc.City',                 // (32 chars max)
 305          '2#092' => 'Iptc.Sublocation',          // (32 chars max)
 306          '2#095' => 'Iptc.ProvinceState',        // (32 chars max)
 307          '2#100' => 'Iptc.CountryCode',          // (32 alpha chars max)
 308          '2#101' => 'Iptc.CountryName',          // (64 chars max)
 309          '2#105' => 'Iptc.Headline',             // (256 chars max)
 310          '2#110' => 'Iptc.Credits',              // (32 chars max)
 311          '2#115' => 'Iptc.Source',               // (32 chars max)
 312          '2#116' => 'Iptc.Copyright',            // Copyright Notice (128 chars max)
 313          '2#118' => 'Iptc.Contact',              // (128 chars max)
 314          '2#120' => 'Iptc.Caption',              // Caption/Abstract (2000 chars max)
 315          '2#122' => 'Iptc.CaptionWriter'         // Caption Writer/Editor (32 chars max)
 316      );
 317      
 318      protected $iptc_to_property = array(
 319          'Iptc.ObjectName' => 'Title',
 320          'Iptc.Caption' => 'Description',
 321          'Iptc.ByLine' => 'Creator',
 322          'Iptc.Copyright' =>'Rights',
 323          'Iptc.CountryCode' => 'CountryCode',
 324          'Iptc.CountryName' => 'Country',
 325          'Iptc.ProvinceState' => 'State',
 326          'Iptc.City' => 'City',
 327          'Iptc.Keywords' => 'Keywords'
 328      );
 329      
 330      # EXIF
 331      protected $exif_to_property = array(
 332          //'' => 'Title',
 333          'ImageDescription' => 'Description',
 334          'Artist' => 'Creator',
 335          'Copyright' => 'Rights',
 336          'Make' => 'Make',
 337          'Model' => 'Model',
 338          'ExposureTime' => 'Exposure',
 339          'FNumber' => 'FNumber',
 340          'MaxApertureValue' => 'MaxApertureValue',
 341          'ExposureProgram' => 'ExposureProgram',
 342          'ISOSpeedRatings' => 'ISOSpeedRatings',
 343          'DateTimeOriginal' => 'DateTimeOriginal',
 344          'ExposureBiasValue' => 'ExposureBiasValue',
 345          'MeteringMode' => 'MeteringMode',
 346          'FocalLength' => 'FocalLength'
 347          //'' => 'Lens',
 348          //'' => 'CountryCode',
 349          //'' => 'Country',
 350          //'' => 'State',
 351          //'' => 'City',
 352          //'' => 'Keywords'
 353      );
 354  }
 355  ?>