src/exiv2.cc

   1 /*
   2  * Geeqie
   3  * Copyright (C) 2008 - 2012 The Geeqie Team
   4  *
   5  * Author: Vladimir Nadvornik
   6  *
   7  * This software is released under the GNU General Public License (GNU GPL).
   8  * Please read the included file COPYING for more information.
   9  * This software comes with no warranty of any kind, use at your own risk!
  10  */
  11
  12 #include "config.h"
  13
  14 #ifdef HAVE_EXIV2
  15
  16 #include <exiv2/image.hpp>
  17 #include <exiv2/exif.hpp>
  18 #include <iostream>
  19
  20 // EXIV2_TEST_VERSION is defined in Exiv2 0.15 and newer.
  21 #ifndef EXIV2_TEST_VERSION
  22 # define EXIV2_TEST_VERSION(major,minor,patch) \
  23         ( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )
  24 #endif
  25
  26
  27 #include <sys/types.h>
  28 #include <sys/stat.h>
  29 #include <unistd.h>
  30 #include <fcntl.h>
  31 #include <sys/mman.h>
  32
  33 #if !EXIV2_TEST_VERSION(0,17,90)
  34 #include <exiv2/tiffparser.hpp>
  35 #include <exiv2/tiffcomposite.hpp>
  36 #include <exiv2/tiffvisitor.hpp>
  37 #include <exiv2/tiffimage.hpp>
  38 #include <exiv2/cr2image.hpp>
  39 #include <exiv2/crwimage.hpp>
  40 #if EXIV2_TEST_VERSION(0,16,0)
  41 #include <exiv2/orfimage.hpp>
  42 #endif
  43 #if EXIV2_TEST_VERSION(0,13,0)
  44 #include <exiv2/rafimage.hpp>
  45 #endif
  46 #include <exiv2/futils.hpp>
  47 #else
  48 #include <exiv2/preview.hpp>
  49 #endif
  50
  51 #if EXIV2_TEST_VERSION(0,17,0)
  52 #include <exiv2/convert.hpp>
  53 #include <exiv2/xmpsidecar.hpp>
  54 #endif
  55
  56 extern "C" {
  57 #include <glib.h>
  58
  59 #include "main.h"
  60 #include "exif.h"
  61
  62 #include "filefilter.h"
  63 #include "ui_fileops.h"
  64
  65 #include "misc.h"
  66 }
  67
  68 typedef struct _AltKey AltKey;
  69
  70 struct _AltKey
  71 {
  72         const gchar *xmp_key;
  73         const gchar *exif_key;
  74         const gchar *iptc_key;
  75 };
  76
  77 /* this is a list of keys that should be converted, even with the older Exiv2 which does not support it directly */
  78 static const AltKey alt_keys[] = {
  79         {"Xmp.tiff.Orientation",                "Exif.Image.Orientation",       NULL},
  80         {"Xmp.dc.title",                        NULL,                           "Iptc.Application2.ObjectName"          },
  81         {"Xmp.photoshop.Urgency",               NULL,                           "Iptc.Application2.Urgency"             },
  82         {"Xmp.photoshop.Category",              NULL,                           "Iptc.Application2.Category"            },
  83         {"Xmp.photoshop.SupplementalCategory",  NULL,                           "Iptc.Application2.SuppCategory"        },
  84         {"Xmp.dc.subject",                      NULL,                           "Iptc.Application2.Keywords"            },
  85         {"Xmp.iptc.Location",                   NULL,                           "Iptc.Application2.LocationName"        },
  86         {"Xmp.photoshop.Instruction",           NULL,                           "Iptc.Application2.SpecialInstructions" },
  87         {"Xmp.photoshop.DateCreated",           NULL,                           "Iptc.Application2.DateCreated"         },
  88         {"Xmp.dc.creator",                      NULL,                           "Iptc.Application2.Byline"              },
  89         {"Xmp.photoshop.AuthorsPosition",       NULL,                           "Iptc.Application2.BylineTitle"         },
  90         {"Xmp.photoshop.City",                  NULL,                           "Iptc.Application2.City"                },
  91         {"Xmp.photoshop.State",                 NULL,                           "Iptc.Application2.ProvinceState"       },
  92         {"Xmp.iptc.CountryCode",                NULL,                           "Iptc.Application2.CountryCode"         },
  93         {"Xmp.photoshop.Country",               NULL,                           "Iptc.Application2.CountryName"         },
  94         {"Xmp.photoshop.TransmissionReference", NULL,                           "Iptc.Application2.TransmissionReference"},
  95         {"Xmp.photoshop.Headline",              NULL,                           "Iptc.Application2.Headline"            },
  96         {"Xmp.photoshop.Credit",                NULL,                           "Iptc.Application2.Credit"              },
  97         {"Xmp.photoshop.Source",                NULL,                           "Iptc.Application2.Source"              },
  98         {"Xmp.dc.rights",                       NULL,                           "Iptc.Application2.Copyright"           },
  99         {"Xmp.dc.description",                  NULL,                           "Iptc.Application2.Caption"             },
 100         {"Xmp.photoshop.CaptionWriter",         NULL,                           "Iptc.Application2.Writer"              },
 101         {NULL, NULL, NULL}
 102         };
 103
 104 static void _debug_exception(const char* file,
 105                              int line,
 106                              const char* func,
 107                              Exiv2::AnyError& e)
 108 {
 109         gchar *str = g_locale_from_utf8(e.what(), -1, NULL, NULL, NULL);
 110         DEBUG_1("%s:%d:%s:Exiv2: %s", file, line, func, str);
 111         g_free(str);
 112 }
 113
 114 #define debug_exception(e) _debug_exception(__FILE__, __LINE__, __func__, e)
 115
 116 struct _ExifData
 117 {
 118         Exiv2::ExifData::const_iterator exifIter; /* for exif_get_next_item */
 119         Exiv2::IptcData::const_iterator iptcIter; /* for exif_get_next_item */
 120 #if EXIV2_TEST_VERSION(0,16,0)
 121         Exiv2::XmpData::const_iterator xmpIter; /* for exif_get_next_item */
 122 #endif
 123
 124         virtual ~_ExifData()
 125         {
 126         }
 127
 128         virtual void writeMetadata(gchar *path = NULL)
 129         {
 130                 g_critical("Unsupported method of writing metadata");
 131         }
 132
 133         virtual ExifData *original()
 134         {
 135                 return NULL;
 136         }
 137
 138         virtual Exiv2::Image *image() = 0;
 139
 140         virtual Exiv2::ExifData &exifData() = 0;
 141
 142         virtual Exiv2::IptcData &iptcData() = 0;
 143
 144 #if EXIV2_TEST_VERSION(0,16,0)
 145         virtual Exiv2::XmpData &xmpData() = 0;
 146 #endif
 147
 148         virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length) = 0;
 149
 150         virtual guchar *get_jpeg_color_profile(guint *data_len) = 0;
 151 };
 152
 153 // This allows read-only access to the original metadata
 154 struct _ExifDataOriginal : public _ExifData
 155 {
 156 protected:
 157         Exiv2::Image::AutoPtr image_;
 158
 159         /* the icc profile in jpeg is not technically exif - store it here */
 160         unsigned char *cp_data_;
 161         guint cp_length_;
 162         gboolean valid_;
 163
 164         Exiv2::ExifData emptyExifData_;
 165         Exiv2::IptcData emptyIptcData_;
 166 #if EXIV2_TEST_VERSION(0,16,0)
 167         Exiv2::XmpData emptyXmpData_;
 168 #endif
 169
 170 public:
 171         _ExifDataOriginal(Exiv2::Image::AutoPtr image)
 172         {
 173                 cp_data_ = NULL;
 174                 cp_length_ = 0;
 175                 image_ = image;
 176                 valid_ = TRUE;
 177         }
 178
 179         _ExifDataOriginal(gchar *path)
 180         {
 181                 cp_data_ = NULL;
 182                 cp_length_ = 0;
 183                 valid_ = TRUE;
 184
 185                 gchar *pathl = path_from_utf8(path);
 186                 try
 187                         {
 188                         image_ = Exiv2::ImageFactory::open(pathl);
 189 //                      g_assert (image.get() != 0);
 190                         image_->readMetadata();
 191
 192 #if EXIV2_TEST_VERSION(0,16,0)
 193                         if (image_->mimeType() == "application/rdf+xml")
 194                                 {
 195                                 //Exiv2 sidecar converts xmp to exif and iptc, we don't want it.
 196                                 image_->clearExifData();
 197                                 image_->clearIptcData();
 198                                 }
 199 #endif
 200
 201 #if EXIV2_TEST_VERSION(0,14,0)
 202                         if (image_->mimeType() == "image/jpeg")
 203                                 {
 204                                 /* try to get jpeg color profile */
 205                                 Exiv2::BasicIo &io = image_->io();
 206                                 gint open = io.isopen();
 207                                 if (!open) io.open();
 208                                 if (io.isopen())
 209                                         {
 210                                         unsigned char *mapped = (unsigned char*)io.mmap();
 211                                         if (mapped) exif_jpeg_parse_color(this, mapped, io.size());
 212                                         io.munmap();
 213                                         }
 214                                 if (!open) io.close();
 215                                 }
 216 #endif
 217                         }
 218                 catch (Exiv2::AnyError& e)
 219                         {
 220                         valid_ = FALSE;
 221                         }
 222                 g_free(pathl);
 223         }
 224
 225         virtual ~_ExifDataOriginal()
 226         {
 227                 if (cp_data_) g_free(cp_data_);
 228         }
 229
 230         virtual Exiv2::Image *image()
 231         {
 232                 if (!valid_) return NULL;
 233                 return image_.get();
 234         }
 235
 236         virtual Exiv2::ExifData &exifData ()
 237         {
 238                 if (!valid_) return emptyExifData_;
 239                 return image_->exifData();
 240         }
 241
 242         virtual Exiv2::IptcData &iptcData ()
 243         {
 244                 if (!valid_) return emptyIptcData_;
 245                 return image_->iptcData();
 246         }
 247
 248 #if EXIV2_TEST_VERSION(0,16,0)
 249         virtual Exiv2::XmpData &xmpData ()
 250         {
 251                 if (!valid_) return emptyXmpData_;
 252                 return image_->xmpData();
 253         }
 254 #endif
 255
 256         virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length)
 257         {
 258                 if (cp_data_) g_free(cp_data_);
 259                 cp_data_ = cp_data;
 260                 cp_length_ = cp_length;
 261         }
 262
 263         virtual guchar *get_jpeg_color_profile(guint *data_len)
 264         {
 265                 if (cp_data_)
 266                 {
 267                         if (data_len) *data_len = cp_length_;
 268                         return (unsigned char *) g_memdup(cp_data_, cp_length_);
 269                 }
 270                 return NULL;
 271         }
 272 };
 273
 274 extern "C" {
 275 static void _ExifDataProcessed_update_xmp(gpointer key, gpointer value, gpointer data);
 276 }
 277
 278 // This allows read-write access to the metadata
 279 struct _ExifDataProcessed : public _ExifData
 280 {
 281 protected:
 282         _ExifDataOriginal *imageData_;
 283         _ExifDataOriginal *sidecarData_;
 284
 285         Exiv2::ExifData exifData_;
 286         Exiv2::IptcData iptcData_;
 287 #if EXIV2_TEST_VERSION(0,16,0)
 288         Exiv2::XmpData xmpData_;
 289 #endif
 290
 291 public:
 292         _ExifDataProcessed(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp)
 293         {
 294                 imageData_ = new _ExifDataOriginal(path);
 295                 sidecarData_ = NULL;
 296 #if EXIV2_TEST_VERSION(0,16,0)
 297                 if (sidecar_path)
 298                         {
 299                         sidecarData_ = new _ExifDataOriginal(sidecar_path);
 300                         xmpData_ = sidecarData_->xmpData();
 301                         }
 302                 else
 303                         {
 304                         xmpData_ = imageData_->xmpData();
 305                         }
 306
 307 #endif
 308                 exifData_ = imageData_->exifData();
 309                 iptcData_ = imageData_->iptcData();
 310 #if EXIV2_TEST_VERSION(0,17,0)
 311                 try
 312                         {
 313                         syncExifWithXmp(exifData_, xmpData_);
 314                         }
 315                 catch (...)
 316                         {
 317                         DEBUG_1("Exiv2: Catching bug\n");
 318                         }
 319 #endif
 320                 if (modified_xmp)
 321                         {
 322                         g_hash_table_foreach(modified_xmp, _ExifDataProcessed_update_xmp, this);
 323                         }
 324         }
 325
 326         virtual ~_ExifDataProcessed()
 327         {
 328                 if (imageData_) delete imageData_;
 329                 if (sidecarData_) delete sidecarData_;
 330         }
 331
 332         virtual ExifData *original()
 333         {
 334                 return imageData_;
 335         }
 336
 337         virtual void writeMetadata(gchar *path = NULL)
 338         {
 339                 if (!path)
 340                         {
 341 #if EXIV2_TEST_VERSION(0,17,0)
 342                         if (options->metadata.save_legacy_IPTC)
 343                                 copyXmpToIptc(xmpData_, iptcData_);
 344                         else
 345                                 iptcData_.clear();
 346
 347                         copyXmpToExif(xmpData_, exifData_);
 348 #endif
 349                         Exiv2::Image *image = imageData_->image();
 350
 351                         if (!image) Exiv2::Error(21);
 352                         image->setExifData(exifData_);
 353                         image->setIptcData(iptcData_);
 354 #if EXIV2_TEST_VERSION(0,16,0)
 355                         image->setXmpData(xmpData_);
 356 #endif
 357                         image->writeMetadata();
 358                         }
 359                 else
 360                         {
 361 #if EXIV2_TEST_VERSION(0,17,0)
 362                         gchar *pathl = path_from_utf8(path);;
 363
 364                         Exiv2::Image::AutoPtr sidecar = Exiv2::ImageFactory::create(Exiv2::ImageType::xmp, pathl);
 365
 366                         g_free(pathl);
 367
 368                         sidecar->setXmpData(xmpData_);
 369                         sidecar->writeMetadata();
 370 #else
 371                         throw Exiv2::Error(3, "xmp");
 372 #endif
 373                         }
 374         }
 375
 376         virtual Exiv2::Image *image()
 377         {
 378                 return imageData_->image();
 379         }
 380
 381         virtual Exiv2::ExifData &exifData ()
 382         {
 383                 return exifData_;
 384         }
 385
 386         virtual Exiv2::IptcData &iptcData ()
 387         {
 388                 return iptcData_;
 389         }
 390
 391 #if EXIV2_TEST_VERSION(0,16,0)
 392         virtual Exiv2::XmpData &xmpData ()
 393         {
 394                 return xmpData_;
 395         }
 396 #endif
 397
 398         virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length)
 399         {
 400                 imageData_->add_jpeg_color_profile(cp_data, cp_length);
 401         }
 402
 403         virtual guchar *get_jpeg_color_profile(guint *data_len)
 404         {
 405                 return imageData_->get_jpeg_color_profile(data_len);
 406         }
 407 };
 408
 409
 410
 411
 412 extern "C" {
 413
 414
 415 void exif_init(void)
 416 {
 417 #ifdef EXV_ENABLE_NLS
 418         bind_textdomain_codeset (EXV_PACKAGE, "UTF-8");
 419 #endif
 420 }
 421
 422
 423
 424 static void _ExifDataProcessed_update_xmp(gpointer key, gpointer value, gpointer data)
 425 {
 426         exif_update_metadata((ExifData *)data, (gchar *)key, (GList *)value);
 427 }
 428
 429 ExifData *exif_read(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp)
 430 {
 431         DEBUG_1("exif read %s, sidecar: %s", path, sidecar_path ? sidecar_path : "-");
 432         try {
 433                 return new _ExifDataProcessed(path, sidecar_path, modified_xmp);
 434         }
 435         catch (Exiv2::AnyError& e) {
 436                 debug_exception(e);
 437                 return NULL;
 438         }
 439
 440 }
 441
 442 gboolean exif_write(ExifData *exif)
 443 {
 444         try {
 445                 exif->writeMetadata();
 446                 return TRUE;
 447         }
 448         catch (Exiv2::AnyError& e) {
 449                 debug_exception(e);
 450                 return FALSE;
 451         }
 452 }
 453
 454 gboolean exif_write_sidecar(ExifData *exif, gchar *path)
 455 {
 456         try {
 457                 exif->writeMetadata(path);
 458                 return TRUE;
 459         }
 460         catch (Exiv2::AnyError& e) {
 461                 debug_exception(e);
 462                 return FALSE;
 463         }
 464
 465 }
 466
 467
 468 void exif_free(ExifData *exif)
 469 {
 470         if (!exif) return;
 471         g_assert(dynamic_cast<_ExifDataProcessed *>(exif)); // this should not be called on ExifDataOriginal
 472         delete exif;
 473 }
 474
 475 ExifData *exif_get_original(ExifData *exif)
 476 {
 477         return exif->original();
 478 }
 479
 480
 481 ExifItem *exif_get_item(ExifData *exif, const gchar *key)
 482 {
 483         try {
 484                 Exiv2::Metadatum *item = NULL;
 485                 try {
 486                         Exiv2::ExifKey ekey(key);
 487                         Exiv2::ExifData::iterator pos = exif->exifData().findKey(ekey);
 488                         if (pos == exif->exifData().end()) return NULL;
 489                         item = &*pos;
 490                 }
 491                 catch (Exiv2::AnyError& e) {
 492                         try {
 493                                 Exiv2::IptcKey ekey(key);
 494                                 Exiv2::IptcData::iterator pos = exif->iptcData().findKey(ekey);
 495                                 if (pos == exif->iptcData().end()) return NULL;
 496                                 item = &*pos;
 497                         }
 498                         catch (Exiv2::AnyError& e) {
 499 #if EXIV2_TEST_VERSION(0,16,0)
 500                                 Exiv2::XmpKey ekey(key);
 501                                 Exiv2::XmpData::iterator pos = exif->xmpData().findKey(ekey);
 502                                 if (pos == exif->xmpData().end()) return NULL;
 503                                 item = &*pos;
 504 #endif
 505                         }
 506                 }
 507                 return (ExifItem *)item;
 508         }
 509         catch (Exiv2::AnyError& e) {
 510                 debug_exception(e);
 511                 return NULL;
 512         }
 513 }
 514
 515 ExifItem *exif_add_item(ExifData *exif, const gchar *key)
 516 {
 517         try {
 518                 Exiv2::Metadatum *item = NULL;
 519                 try {
 520                         Exiv2::ExifKey ekey(key);
 521                         exif->exifData().add(ekey, NULL);
 522                         Exiv2::ExifData::iterator pos = exif->exifData().end(); // a hack, there should be a better way to get the currently added item
 523                         pos--;
 524                         item = &*pos;
 525                 }
 526                 catch (Exiv2::AnyError& e) {
 527                         try {
 528                                 Exiv2::IptcKey ekey(key);
 529                                 exif->iptcData().add(ekey, NULL);
 530                                 Exiv2::IptcData::iterator pos = exif->iptcData().end();
 531                                 pos--;
 532                                 item = &*pos;
 533                         }
 534                         catch (Exiv2::AnyError& e) {
 535 #if EXIV2_TEST_VERSION(0,16,0)
 536                                 Exiv2::XmpKey ekey(key);
 537                                 exif->xmpData().add(ekey, NULL);
 538                                 Exiv2::XmpData::iterator pos = exif->xmpData().end();
 539                                 pos--;
 540                                 item = &*pos;
 541 #endif
 542                         }
 543                 }
 544                 return (ExifItem *)item;
 545         }
 546         catch (Exiv2::AnyError& e) {
 547                 debug_exception(e);
 548                 return NULL;
 549         }
 550 }
 551
 552
 553 ExifItem *exif_get_first_item(ExifData *exif)
 554 {
 555         try {
 556                 exif->exifIter = exif->exifData().begin();
 557                 exif->iptcIter = exif->iptcData().begin();
 558 #if EXIV2_TEST_VERSION(0,16,0)
 559                 exif->xmpIter = exif->xmpData().begin();
 560 #endif
 561                 if (exif->exifIter != exif->exifData().end())
 562                         {
 563                         const Exiv2::Metadatum *item = &*exif->exifIter;
 564                         exif->exifIter++;
 565                         return (ExifItem *)item;
 566                         }
 567                 if (exif->iptcIter != exif->iptcData().end())
 568                         {
 569                         const Exiv2::Metadatum *item = &*exif->iptcIter;
 570                         exif->iptcIter++;
 571                         return (ExifItem *)item;
 572                         }
 573 #if EXIV2_TEST_VERSION(0,16,0)
 574                 if (exif->xmpIter != exif->xmpData().end())
 575                         {
 576                         const Exiv2::Metadatum *item = &*exif->xmpIter;
 577                         exif->xmpIter++;
 578                         return (ExifItem *)item;
 579                         }
 580 #endif
 581                 return NULL;
 582
 583         }
 584         catch (Exiv2::AnyError& e) {
 585                 debug_exception(e);
 586                 return NULL;
 587         }
 588 }
 589
 590 ExifItem *exif_get_next_item(ExifData *exif)
 591 {
 592         try {
 593                 if (exif->exifIter != exif->exifData().end())
 594                         {
 595                         const Exiv2::Metadatum *item = &*exif->exifIter;
 596                         exif->exifIter++;
 597                         return (ExifItem *)item;
 598                 }
 599                 if (exif->iptcIter != exif->iptcData().end())
 600                         {
 601                         const Exiv2::Metadatum *item = &*exif->iptcIter;
 602                         exif->iptcIter++;
 603                         return (ExifItem *)item;
 604                 }
 605 #if EXIV2_TEST_VERSION(0,16,0)
 606                 if (exif->xmpIter != exif->xmpData().end())
 607                         {
 608                         const Exiv2::Metadatum *item = &*exif->xmpIter;
 609                         exif->xmpIter++;
 610                         return (ExifItem *)item;
 611                 }
 612 #endif
 613                 return NULL;
 614         }
 615         catch (Exiv2::AnyError& e) {
 616                 debug_exception(e);
 617                 return NULL;
 618         }
 619 }
 620
 621 char *exif_item_get_tag_name(ExifItem *item)
 622 {
 623         try {
 624                 if (!item) return NULL;
 625                 return g_strdup(((Exiv2::Metadatum *)item)->key().c_str());
 626         }
 627         catch (Exiv2::AnyError& e) {
 628                 debug_exception(e);
 629                 return NULL;
 630         }
 631 }
 632
 633 guint exif_item_get_tag_id(ExifItem *item)
 634 {
 635         try {
 636                 if (!item) return 0;
 637                 return ((Exiv2::Metadatum *)item)->tag();
 638         }
 639         catch (Exiv2::AnyError& e) {
 640                 debug_exception(e);
 641                 return 0;
 642         }
 643 }
 644
 645 guint exif_item_get_elements(ExifItem *item)
 646 {
 647         try {
 648                 if (!item) return 0;
 649                 return ((Exiv2::Metadatum *)item)->count();
 650         }
 651         catch (Exiv2::AnyError& e) {
 652                 debug_exception(e);
 653                 return 0;
 654         }
 655 }
 656
 657 char *exif_item_get_data(ExifItem *item, guint *data_len)
 658 {
 659         try {
 660                 if (!item) return 0;
 661                 Exiv2::Metadatum *md = (Exiv2::Metadatum *)item;
 662                 if (data_len) *data_len = md->size();
 663                 char *data = (char *)g_malloc(md->size());
 664                 long res = md->copy((Exiv2::byte *)data, Exiv2::littleEndian /* should not matter */);
 665                 g_assert(res == md->size());
 666                 return data;
 667         }
 668         catch (Exiv2::AnyError& e) {
 669                 debug_exception(e);
 670                 return NULL;
 671         }
 672 }
 673
 674 char *exif_item_get_description(ExifItem *item)
 675 {
 676         try {
 677                 if (!item) return NULL;
 678                 return utf8_validate_or_convert(((Exiv2::Metadatum *)item)->tagLabel().c_str());
 679         }
 680         catch (std::exception& e) {
 681 //              debug_exception(e);
 682                 return NULL;
 683         }
 684 }
 685
 686 /*
 687 invalidTypeId, unsignedByte, asciiString, unsignedShort,
 688   unsignedLong, unsignedRational, signedByte, undefined,
 689   signedShort, signedLong, signedRational, string,
 690   date, time, comment, directory,
 691   xmpText, xmpAlt, xmpBag, xmpSeq,
 692   langAlt, lastTypeId
 693 */
 694
 695 static guint format_id_trans_tbl [] = {
 696         EXIF_FORMAT_UNKNOWN,
 697         EXIF_FORMAT_BYTE_UNSIGNED,
 698         EXIF_FORMAT_STRING,
 699         EXIF_FORMAT_SHORT_UNSIGNED,
 700         EXIF_FORMAT_LONG_UNSIGNED,
 701         EXIF_FORMAT_RATIONAL_UNSIGNED,
 702         EXIF_FORMAT_BYTE,
 703         EXIF_FORMAT_UNDEFINED,
 704         EXIF_FORMAT_SHORT,
 705         EXIF_FORMAT_LONG,
 706         EXIF_FORMAT_RATIONAL,
 707         EXIF_FORMAT_STRING,
 708         EXIF_FORMAT_STRING,
 709         EXIF_FORMAT_STRING,
 710         EXIF_FORMAT_UNDEFINED,
 711         EXIF_FORMAT_STRING,
 712         EXIF_FORMAT_STRING,
 713         EXIF_FORMAT_STRING,
 714         EXIF_FORMAT_STRING
 715         };
 716
 717
 718
 719 guint exif_item_get_format_id(ExifItem *item)
 720 {
 721         try {
 722                 if (!item) return EXIF_FORMAT_UNKNOWN;
 723                 guint id = ((Exiv2::Metadatum *)item)->typeId();
 724                 if (id >= (sizeof(format_id_trans_tbl) / sizeof(format_id_trans_tbl[0])) ) return EXIF_FORMAT_UNKNOWN;
 725                 return format_id_trans_tbl[id];
 726         }
 727         catch (Exiv2::AnyError& e) {
 728                 debug_exception(e);
 729                 return EXIF_FORMAT_UNKNOWN;
 730         }
 731 }
 732
 733 const char *exif_item_get_format_name(ExifItem *item, gboolean brief)
 734 {
 735         try {
 736                 if (!item) return NULL;
 737                 return ((Exiv2::Metadatum *)item)->typeName();
 738         }
 739         catch (Exiv2::AnyError& e) {
 740                 debug_exception(e);
 741                 return NULL;
 742         }
 743 }
 744
 745
 746 gchar *exif_item_get_data_as_text(ExifItem *item)
 747 {
 748         try {
 749                 if (!item) return NULL;
 750                 Exiv2::Metadatum *metadatum = (Exiv2::Metadatum *)item;
 751 #if EXIV2_TEST_VERSION(0,17,0)
 752                 return utf8_validate_or_convert(metadatum->print().c_str());
 753 #else
 754                 std::stringstream str;
 755                 Exiv2::Exifdatum *exifdatum;
 756                 Exiv2::Iptcdatum *iptcdatum;
 757 #if EXIV2_TEST_VERSION(0,16,0)
 758                 Exiv2::Xmpdatum *xmpdatum;
 759 #endif
 760                 if ((exifdatum = dynamic_cast<Exiv2::Exifdatum *>(metadatum)))
 761                         str << *exifdatum;
 762                 else if ((iptcdatum = dynamic_cast<Exiv2::Iptcdatum *>(metadatum)))
 763                         str << *iptcdatum;
 764 #if EXIV2_TEST_VERSION(0,16,0)
 765                 else if ((xmpdatum = dynamic_cast<Exiv2::Xmpdatum *>(metadatum)))
 766                         str << *xmpdatum;
 767 #endif
 768
 769                 return utf8_validate_or_convert(str.str().c_str());
 770 #endif
 771         }
 772         catch (Exiv2::AnyError& e) {
 773                 return NULL;
 774         }
 775 }
 776
 777 gchar *exif_item_get_string(ExifItem *item, int idx)
 778 {
 779         try {
 780                 if (!item) return NULL;
 781                 Exiv2::Metadatum *em = (Exiv2::Metadatum *)item;
 782 #if EXIV2_TEST_VERSION(0,16,0)
 783                 std::string str = em->toString(idx);
 784 #else
 785                 std::string str = em->toString(); // FIXME
 786 #endif
 787                 if (idx == 0 && str == "") str = em->toString();
 788                 if (str.length() > 5 && str.substr(0, 5) == "lang=")
 789                         {
 790                         std::string::size_type pos = str.find_first_of(' ');
 791                         if (pos != std::string::npos) str = str.substr(pos+1);
 792                         }
 793
 794                 return utf8_validate_or_convert(str.c_str());
 795         }
 796         catch (Exiv2::AnyError& e) {
 797                 return NULL;
 798         }
 799 }
 800
 801
 802 gint exif_item_get_integer(ExifItem *item, gint *value)
 803 {
 804         try {
 805                 if (!item || exif_item_get_elements(item) == 0) return 0;
 806                 *value = ((Exiv2::Metadatum *)item)->toLong();
 807                 return 1;
 808         }
 809         catch (Exiv2::AnyError& e) {
 810                 debug_exception(e);
 811                 return 0;
 812         }
 813 }
 814
 815 ExifRational *exif_item_get_rational(ExifItem *item, gint *sign, guint n)
 816 {
 817         try {
 818                 if (!item) return NULL;
 819                 if (n >= exif_item_get_elements(item)) return NULL;
 820                 Exiv2::Rational v = ((Exiv2::Metadatum *)item)->toRational(n);
 821                 static ExifRational ret;
 822                 ret.num = v.first;
 823                 ret.den = v.second;
 824                 if (sign) *sign = (((Exiv2::Metadatum *)item)->typeId() == Exiv2::signedRational);
 825                 return &ret;
 826         }
 827         catch (Exiv2::AnyError& e) {
 828                 debug_exception(e);
 829                 return NULL;
 830         }
 831 }
 832
 833 gchar *exif_get_tag_description_by_key(const gchar *key)
 834 {
 835         try {
 836                 Exiv2::ExifKey ekey(key);
 837                 return utf8_validate_or_convert(ekey.tagLabel().c_str());
 838         }
 839         catch (Exiv2::AnyError& e) {
 840                 try {
 841                         Exiv2::IptcKey ikey(key);
 842                         return utf8_validate_or_convert(ikey.tagLabel().c_str());
 843                 }
 844                 catch (Exiv2::AnyError& e) {
 845                         try {
 846 #if EXIV2_TEST_VERSION(0,16,0)
 847                                 Exiv2::XmpKey xkey(key);
 848                                 return utf8_validate_or_convert(xkey.tagLabel().c_str());
 849 #endif
 850                         }
 851                         catch (Exiv2::AnyError& e) {
 852                                 debug_exception(e);
 853                                 return NULL;
 854                         }
 855                 }
 856         }
 857         return NULL;
 858 }
 859
 860 static const AltKey *find_alt_key(const gchar *xmp_key)
 861 {
 862         gint i = 0;
 863
 864         while (alt_keys[i].xmp_key)
 865                 {
 866                 if (strcmp(xmp_key, alt_keys[i].xmp_key) == 0) return &alt_keys[i];
 867                 i++;
 868                 }
 869         return NULL;
 870 }
 871
 872 static gint exif_update_metadata_simple(ExifData *exif, const gchar *key, const GList *values)
 873 {
 874         try {
 875                 const GList *work = values;
 876
 877                 try {
 878                         Exiv2::ExifKey ekey(key);
 879
 880                         Exiv2::ExifData::iterator pos = exif->exifData().findKey(ekey);
 881                         while (pos != exif->exifData().end())
 882                                 {
 883                                 exif->exifData().erase(pos);
 884                                 pos = exif->exifData().findKey(ekey);
 885                                 }
 886
 887                         while (work)
 888                                 {
 889                                 exif->exifData()[key] = (gchar *)work->data;
 890                                 work = work->next;
 891                                 }
 892                 }
 893                 catch (Exiv2::AnyError& e) {
 894 #if EXIV2_TEST_VERSION(0,16,0)
 895                         try
 896 #endif
 897                         {
 898                                 Exiv2::IptcKey ekey(key);
 899                                 Exiv2::IptcData::iterator pos = exif->iptcData().findKey(ekey);
 900                                 while (pos != exif->iptcData().end())
 901                                         {
 902                                         exif->iptcData().erase(pos);
 903                                         pos = exif->iptcData().findKey(ekey);
 904                                         }
 905
 906                                 while (work)
 907                                         {
 908                                         exif->iptcData()[key] = (gchar *)work->data;
 909                                         work = work->next;
 910                                         }
 911                         }
 912 #if EXIV2_TEST_VERSION(0,16,0)
 913                         catch (Exiv2::AnyError& e) {
 914                                 Exiv2::XmpKey ekey(key);
 915                                 Exiv2::XmpData::iterator pos = exif->xmpData().findKey(ekey);
 916                                 while (pos != exif->xmpData().end())
 917                                         {
 918                                         exif->xmpData().erase(pos);
 919                                         pos = exif->xmpData().findKey(ekey);
 920                                         }
 921
 922                                 while (work)
 923                                         {
 924                                         exif->xmpData()[key] = (gchar *)work->data;
 925                                         work = work->next;
 926                                         }
 927                         }
 928 #endif
 929                 }
 930                 return 1;
 931         }
 932         catch (Exiv2::AnyError& e) {
 933                 debug_exception(e);
 934                 return 0;
 935         }
 936 }
 937
 938 gint exif_update_metadata(ExifData *exif, const gchar *key, const GList *values)
 939 {
 940         gint ret = exif_update_metadata_simple(exif, key, values);
 941
 942         if (
 943 #if !EXIV2_TEST_VERSION(0,17,0)
 944             TRUE || /* no conversion support */
 945 #endif
 946             !values || /* deleting item */
 947             !ret  /* writing to the explicitely given xmp tag failed */
 948             )
 949                 {
 950                 /* deleted xmp metadatum can't be converted, we have to delete also the corresponding legacy tag */
 951                 /* if we can't write xmp, update at least the legacy tag */
 952                 const AltKey *alt_key = find_alt_key(key);
 953                 if (alt_key && alt_key->iptc_key)
 954                         ret = exif_update_metadata_simple(exif, alt_key->iptc_key, values);
 955
 956                 if (alt_key && alt_key->exif_key)
 957                         ret = exif_update_metadata_simple(exif, alt_key->exif_key, values);
 958                 }
 959         return ret;
 960 }
 961
 962
 963 static GList *exif_add_value_to_glist(GList *list, Exiv2::Metadatum &item, MetadataFormat format, const Exiv2::ExifData *metadata)
 964 {
 965 #if EXIV2_TEST_VERSION(0,16,0)
 966         Exiv2::TypeId id = item.typeId();
 967         if (format == METADATA_FORMATTED ||
 968             id == Exiv2::asciiString ||
 969             id == Exiv2::undefined ||
 970             id == Exiv2::string ||
 971             id == Exiv2::date ||
 972             id == Exiv2::time ||
 973             id == Exiv2::xmpText ||
 974             id == Exiv2::langAlt ||
 975             id == Exiv2::comment
 976             )
 977                 {
 978 #endif
 979                 /* read as a single entry */
 980                 std::string str;
 981
 982                 if (format == METADATA_FORMATTED)
 983                         {
 984 #if EXIV2_TEST_VERSION(0,17,0)
 985                         str = item.print(
 986 #if EXIV2_TEST_VERSION(0,18,0)
 987                                         metadata
 988 #endif
 989                                         );
 990 #else
 991                         std::stringstream stream;
 992                         Exiv2::Exifdatum *exifdatum;
 993                         Exiv2::Iptcdatum *iptcdatum;
 994 #if EXIV2_TEST_VERSION(0,16,0)
 995                         Exiv2::Xmpdatum *xmpdatum;
 996 #endif
 997                         if ((exifdatum = dynamic_cast<Exiv2::Exifdatum *>(&item)))
 998                                 stream << *exifdatum;
 999                         else if ((iptcdatum = dynamic_cast<Exiv2::Iptcdatum *>(&item)))
1000                                 stream << *iptcdatum;
1001 #if EXIV2_TEST_VERSION(0,16,0)
1002                         else if ((xmpdatum = dynamic_cast<Exiv2::Xmpdatum *>(&item)))
1003                                 stream << *xmpdatum;
1004 #endif
1005                         str = stream.str();
1006 #endif
1007                         if (str.length() > 1024)
1008                                 {
1009                                 /* truncate very long strings, they cause problems in gui */
1010                                 str.erase(1024);
1011                                 str.append("...");
1012                                 }
1013                         }
1014                 else
1015                         {
1016                         str = item.toString();
1017                         }
1018                 if (str.length() > 5 && str.substr(0, 5) == "lang=")
1019                         {
1020                         std::string::size_type pos = str.find_first_of(' ');
1021                         if (pos != std::string::npos) str = str.substr(pos+1);
1022                         }
1023                 list = g_list_append(list, utf8_validate_or_convert(str.c_str()));
1024 #if EXIV2_TEST_VERSION(0,16,0)
1025                 }
1026         else
1027                 {
1028                 /* read as a list */
1029                 gint i;
1030                 for (i = 0; i < item.count(); i++)
1031                         list = g_list_append(list, utf8_validate_or_convert(item.toString(i).c_str()));
1032                 }
1033 #endif
1034         return list;
1035 }
1036
1037 static GList *exif_get_metadata_simple(ExifData *exif, const gchar *key, MetadataFormat format)
1038 {
1039         GList *list = NULL;
1040         try {
1041                 try {
1042                         Exiv2::ExifKey ekey(key);
1043                         Exiv2::ExifData::iterator pos = exif->exifData().findKey(ekey);
1044                         if (pos != exif->exifData().end())
1045                                 list = exif_add_value_to_glist(list, *pos, format, &exif->exifData());
1046
1047                 }
1048                 catch (Exiv2::AnyError& e) {
1049                         try {
1050                                 Exiv2::IptcKey ekey(key);
1051                                 Exiv2::IptcData::iterator pos = exif->iptcData().begin();
1052                                 while (pos != exif->iptcData().end())
1053                                         {
1054                                         if (pos->key() == key)
1055                                                 list = exif_add_value_to_glist(list, *pos, format, NULL);
1056                                         ++pos;
1057                                         }
1058
1059                         }
1060                         catch (Exiv2::AnyError& e) {
1061 #if EXIV2_TEST_VERSION(0,16,0)
1062                                 Exiv2::XmpKey ekey(key);
1063                                 Exiv2::XmpData::iterator pos = exif->xmpData().findKey(ekey);
1064                                 if (pos != exif->xmpData().end())
1065                                         list = exif_add_value_to_glist(list, *pos, format, NULL);
1066 #endif
1067                         }
1068                 }
1069         }
1070         catch (Exiv2::AnyError& e) {
1071                 debug_exception(e);
1072         }
1073         return list;
1074 }
1075
1076 GList *exif_get_metadata(ExifData *exif, const gchar *key, MetadataFormat format)
1077 {
1078         GList *list = NULL;
1079
1080         if (!key) return NULL;
1081
1082         if (format == METADATA_FORMATTED)
1083                 {
1084                 gchar *text;
1085                 gint key_valid;
1086                 text = exif_get_formatted_by_key(exif, key, &key_valid);
1087                 if (key_valid) return g_list_append(NULL, text);
1088                 }
1089
1090         list = exif_get_metadata_simple(exif, key, format);
1091
1092         /* the following code can be ifdefed out as soon as Exiv2 supports it */
1093         if (!list)
1094                 {
1095                 const AltKey *alt_key = find_alt_key(key);
1096                 if (alt_key && alt_key->iptc_key)
1097                         list = exif_get_metadata_simple(exif, alt_key->iptc_key, format);
1098
1099 #if !EXIV2_TEST_VERSION(0,17,0)
1100                 /* with older Exiv2 versions exif is not synced */
1101                 if (!list && alt_key && alt_key->exif_key)
1102                         list = exif_get_metadata_simple(exif, alt_key->exif_key, format);
1103 #endif
1104                 }
1105         return list;
1106 }
1107
1108
1109 void exif_add_jpeg_color_profile(ExifData *exif, unsigned char *cp_data, guint cp_length)
1110 {
1111         exif->add_jpeg_color_profile(cp_data, cp_length);
1112 }
1113
1114 guchar *exif_get_color_profile(ExifData *exif, guint *data_len)
1115 {
1116         guchar *ret = exif->get_jpeg_color_profile(data_len);
1117         if (ret) return ret;
1118
1119         ExifItem *prof_item = exif_get_item(exif, "Exif.Image.InterColorProfile");
1120         if (prof_item && exif_item_get_format_id(prof_item) == EXIF_FORMAT_UNDEFINED)
1121                 ret = (guchar *)exif_item_get_data(prof_item, data_len);
1122         return ret;
1123 }
1124
1125 #if EXIV2_TEST_VERSION(0,17,90)
1126
1127 guchar *exif_get_preview(ExifData *exif, guint *data_len, gint requested_width, gint requested_height)
1128 {
1129         if (!exif) return NULL;
1130
1131         if (!exif->image()) return NULL;
1132
1133         const char* path = exif->image()->io().path().c_str();
1134         /* given image pathname, first do simple (and fast) file extension test */
1135         gboolean is_raw = filter_file_class(path, FORMAT_CLASS_RAWIMAGE);
1136
1137         if (!is_raw && requested_width == 0) return NULL;
1138
1139         try {
1140
1141                 Exiv2::PreviewManager pm(*exif->image());
1142
1143                 Exiv2::PreviewPropertiesList list = pm.getPreviewProperties();
1144
1145                 if (!list.empty())
1146                         {
1147                         Exiv2::PreviewPropertiesList::iterator pos;
1148                         Exiv2::PreviewPropertiesList::iterator last = --list.end();
1149
1150                         if (requested_width == 0)
1151                                 {
1152                                 pos = last; // the largest
1153                                 }
1154                         else
1155                                 {
1156                                 pos = list.begin();
1157                                 while (pos != last)
1158                                         {
1159                                         if (pos->width_ >= (uint32_t)requested_width &&
1160                                             pos->height_ >= (uint32_t)requested_height) break;
1161                                         ++pos;
1162                                         }
1163
1164                                 // we are not interested in smaller thumbnails in normal image formats - we can use full image instead
1165                                 if (!is_raw)
1166                                         {
1167                                         if (pos->width_ < (uint32_t)requested_width || pos->height_ < (uint32_t)requested_height) return NULL;
1168                                         }
1169                                 }
1170
1171                         Exiv2::PreviewImage image = pm.getPreviewImage(*pos);
1172
1173                         Exiv2::DataBuf buf = image.copy();
1174                         std::pair<Exiv2::byte*, long> p = buf.release();
1175
1176                         *data_len = p.second;
1177                         return p.first;
1178                         }
1179                 return NULL;
1180         }
1181         catch (Exiv2::AnyError& e) {
1182                 debug_exception(e);
1183                 return NULL;
1184         }
1185 }
1186
1187 void exif_free_preview(guchar *buf)
1188 {
1189         delete[] (Exiv2::byte*)buf;
1190 }
1191 #endif
1192
1193 }
1194 #if !EXIV2_TEST_VERSION(0,17,90)
1195
1196 /* This is a dirty hack to support raw file preview, bassed on
1197 tiffparse.cpp from Exiv2 examples */
1198
1199 class RawFile {
1200         public:
1201
1202         RawFile(Exiv2::BasicIo &io);
1203         ~RawFile();
1204
1205         const Exiv2::Value *find(uint16_t tag, uint16_t group);
1206
1207         unsigned long preview_offset();
1208
1209         private:
1210         int type;
1211         Exiv2::TiffComponent::AutoPtr rootDir;
1212         Exiv2::BasicIo &io_;
1213         const Exiv2::byte *map_data;
1214         size_t map_len;
1215         unsigned long offset;
1216 };
1217
1218 typedef struct _UnmapData UnmapData;
1219 struct _UnmapData
1220 {
1221         guchar *ptr;
1222         guchar *map_data;
1223         size_t map_len;
1224 };
1225
1226 static GList *exif_unmap_list = 0;
1227
1228 extern "C" guchar *exif_get_preview(ExifData *exif, guint *data_len, gint requested_width, gint requested_height)
1229 {
1230         unsigned long offset;
1231
1232         if (!exif) return NULL;
1233         if (!exif->image()) return NULL;
1234
1235         const char* path = exif->image()->io().path().c_str();
1236
1237         /* given image pathname, first do simple (and fast) file extension test */
1238         if (!filter_file_class(path, FORMAT_CLASS_RAWIMAGE)) return NULL;
1239
1240         try {
1241                 struct stat st;
1242                 guchar *map_data;
1243                 size_t map_len;
1244                 UnmapData *ud;
1245                 int fd;
1246
1247                 RawFile rf(exif->image()->io());
1248                 offset = rf.preview_offset();
1249                 DEBUG_1("%s: offset %lu", path, offset);
1250
1251                 fd = open(path, O_RDONLY);
1252                 if (fd == -1)
1253                         {
1254                         return NULL;
1255                         }
1256
1257                 if (fstat(fd, &st) == -1)
1258                         {
1259                         close(fd);
1260                         return NULL;
1261                         }
1262                 map_len = st.st_size;
1263                 map_data = (guchar *) mmap(0, map_len, PROT_READ, MAP_PRIVATE, fd, 0);
1264                 close(fd);
1265                 if (map_data == MAP_FAILED)
1266                         {
1267                         return NULL;
1268                         }
1269                 *data_len = map_len - offset;
1270                 ud = g_new(UnmapData, 1);
1271                 ud->ptr = map_data + offset;
1272                 ud->map_data = map_data;
1273                 ud->map_len = map_len;
1274
1275                 exif_unmap_list = g_list_prepend(exif_unmap_list, ud);
1276                 return ud->ptr;
1277
1278         }
1279         catch (Exiv2::AnyError& e) {
1280                 debug_exception(e);
1281         }
1282         return NULL;
1283
1284 }
1285
1286 void exif_free_preview(guchar *buf)
1287 {
1288         GList *work = exif_unmap_list;
1289
1290         while (work)
1291                 {
1292                 UnmapData *ud = (UnmapData *)work->data;
1293                 if (ud->ptr == buf)
1294                         {
1295                         munmap(ud->map_data, ud->map_len);
1296                         exif_unmap_list = g_list_remove_link(exif_unmap_list, work);
1297                         g_free(ud);
1298                         return;
1299                         }
1300                 work = work->next;
1301                 }
1302         g_assert_not_reached();
1303 }
1304
1305 using namespace Exiv2;
1306
1307 RawFile::RawFile(BasicIo &io) : io_(io), map_data(NULL), map_len(0), offset(0)
1308 {
1309 /*
1310         struct stat st;
1311         if (fstat(fd, &st) == -1)
1312                 {
1313                 throw Error(14);
1314                 }
1315         map_len = st.st_size;
1316         map_data = (Exiv2::byte *) mmap(0, map_len, PROT_READ, MAP_PRIVATE, fd, 0);
1317         if (map_data == MAP_FAILED)
1318                 {
1319                 throw Error(14);
1320                 }
1321 */
1322         if (io.open() != 0) {
1323             throw Error(9, io.path(), strError());
1324         }
1325
1326         map_data = io.mmap();
1327         map_len = io.size();
1328
1329
1330         type = Exiv2::ImageFactory::getType(map_data, map_len);
1331
1332 #if EXIV2_TEST_VERSION(0,16,0)
1333         TiffHeaderBase *tiffHeader = NULL;
1334 #else
1335         TiffHeade2 *tiffHeader = NULL;
1336 #endif
1337         Cr2Header *cr2Header = NULL;
1338
1339         switch (type) {
1340                 case Exiv2::ImageType::tiff:
1341                         tiffHeader = new TiffHeade2();
1342                         break;
1343                 case Exiv2::ImageType::cr2:
1344                         cr2Header = new Cr2Header();
1345                         break;
1346 #if EXIV2_TEST_VERSION(0,16,0)
1347                 case Exiv2::ImageType::orf:
1348                         tiffHeader = new OrfHeader();
1349                         break;
1350 #endif
1351 #if EXIV2_TEST_VERSION(0,13,0)
1352                 case Exiv2::ImageType::raf:
1353                         if (map_len < 84 + 4) throw Error(14);
1354                         offset = getULong(map_data + 84, bigEndian);
1355                         return;
1356 #endif
1357                 case Exiv2::ImageType::crw:
1358                         {
1359                         // Parse the image, starting with a CIFF header component
1360                         Exiv2::CiffHeader::AutoPtr parseTree(new Exiv2::CiffHeader);
1361                         parseTree->read(map_data, map_len);
1362                         CiffComponent *entry = parseTree->findComponent(0x2007, 0);
1363                         if (entry) offset =  entry->pData() - map_data;
1364                         return;
1365                         }
1366
1367                 default:
1368                         throw Error(3, "RAW");
1369         }
1370
1371         // process tiff-like formats
1372
1373         TiffCompFactoryFct createFct = TiffCreator::create;
1374
1375         rootDir = createFct(Tag::root, Group::none);
1376         if (0 == rootDir.get()) {
1377                 throw Error(1, "No root element defined in TIFF structure");
1378         }
1379
1380         if (tiffHeader)
1381                 {
1382                 if (!tiffHeader->read(map_data, map_len)) throw Error(3, "TIFF");
1383 #if EXIV2_TEST_VERSION(0,16,0)
1384                 rootDir->setStart(map_data + tiffHeader->offset());
1385 #else
1386                 rootDir->setStart(map_data + tiffHeader->ifdOffset());
1387 #endif
1388                 }
1389
1390         if (cr2Header)
1391                 {
1392                 rootDir->setStart(map_data + cr2Header->offset());
1393                 }
1394
1395         TiffRwState::AutoPtr state(new TiffRwState(tiffHeader ? tiffHeader->byteOrder() : littleEndian, 0, createFct));
1396
1397         TiffReader reader(map_data,
1398                           map_len,
1399                           rootDir.get(),
1400                           state);
1401
1402         rootDir->accept(reader);
1403
1404         if (tiffHeader)
1405                 delete tiffHeader;
1406         if (cr2Header)
1407                 delete cr2Header;
1408 }
1409
1410 RawFile::~RawFile(void)
1411 {
1412         io_.munmap();
1413         io_.close();
1414 }
1415
1416 const Value * RawFile::find(uint16_t tag, uint16_t group)
1417 {
1418         TiffFinder finder(tag, group);
1419         rootDir->accept(finder);
1420         TiffEntryBase* te = dynamic_cast<TiffEntryBase*>(finder.result());
1421         if (te)
1422                 {
1423                 DEBUG_1("(tag: %04x %04x) ", tag, group);
1424                 return te->pValue();
1425                 }
1426         else
1427                 return NULL;
1428 }
1429
1430 unsigned long RawFile::preview_offset(void)
1431 {
1432         const Value *val;
1433         if (offset) return offset;
1434
1435         if (type == Exiv2::ImageType::cr2)
1436                 {
1437                 val = find(0x111, Group::ifd0);
1438                 if (val) return val->toLong();
1439
1440                 return 0;
1441                 }
1442
1443         val = find(0x201, Group::sub0_0);
1444         if (val) return val->toLong();
1445
1446         val = find(0x201, Group::ifd0);
1447         if (val) return val->toLong();
1448
1449         val = find(0x201, Group::ignr); // for PEF files, originally it was probably ifd2
1450         if (val) return val->toLong();
1451
1452         val = find(0x111, Group::sub0_1); // dng
1453         if (val) return val->toLong();
1454
1455         return 0;
1456 }
1457
1458
1459 #endif
1460
1461
1462 #endif
1463 /* HAVE_EXIV2 */
1464 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */