src/exiv2.cc

   1 /*
   2  * Copyright (C) 2008 - 2016 The Geeqie Team
   3  *
   4  * Author: Vladimir Nadvornik
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <config.h>
  22
  23 #ifdef HAVE_EXIV2
  24
  25 // Don't include the <exiv2/version.hpp> file directly
  26 // Early Exiv2 versions didn't have version.hpp and the macros.
  27 #include <exiv2/exiv2.hpp>
  28 #include <iostream>
  29 #include <string>
  30
  31 // EXIV2_TEST_VERSION is defined in Exiv2 0.15 and newer.
  32 #ifdef EXIV2_VERSION
  33 #ifndef EXIV2_TEST_VERSION
  34 #define EXIV2_TEST_VERSION(major,minor,patch) \
  35         ( EXIV2_VERSION >= EXIV2_MAKE_VERSION(major,minor,patch) )
  36 #endif
  37 #else
  38 #define EXIV2_TEST_VERSION(major,minor,patch) (false)
  39 #endif
  40
  41 #if EXIV2_TEST_VERSION(0,27,0)
  42 #define HAVE_EXIV2_ERROR_CODE
  43 #endif
  44
  45 #include <sys/types.h>
  46 #include <sys/stat.h>
  47 #include <unistd.h>
  48 #include <fcntl.h>
  49 #include <sys/mman.h>
  50
  51 #if EXIV2_TEST_VERSION(0,27,0)
  52 #define EXV_PACKAGE "exiv2"
  53 #endif
  54
  55 #include <glib.h>
  56
  57 #include "main.h"
  58 #include "exif.h"
  59
  60 #include "filefilter.h"
  61 #include "ui-fileops.h"
  62
  63 #include "misc.h"
  64
  65 typedef struct _AltKey AltKey;
  66
  67 struct _AltKey
  68 {
  69         const gchar *xmp_key;
  70         const gchar *exif_key;
  71         const gchar *iptc_key;
  72 };
  73
  74 /* this is a list of keys that should be converted, even with the older Exiv2 which does not support it directly */
  75 static const AltKey alt_keys[] = {
  76         {"Xmp.tiff.Orientation",                "Exif.Image.Orientation",       NULL},
  77         {"Xmp.dc.title",                        NULL,                           "Iptc.Application2.ObjectName"          },
  78         {"Xmp.photoshop.Urgency",               NULL,                           "Iptc.Application2.Urgency"             },
  79         {"Xmp.photoshop.Category",              NULL,                           "Iptc.Application2.Category"            },
  80         {"Xmp.photoshop.SupplementalCategory",  NULL,                           "Iptc.Application2.SuppCategory"        },
  81         {"Xmp.dc.subject",                      NULL,                           "Iptc.Application2.Keywords"            },
  82         {"Xmp.iptc.Location",                   NULL,                           "Iptc.Application2.LocationName"        },
  83         {"Xmp.photoshop.Instruction",           NULL,                           "Iptc.Application2.SpecialInstructions" },
  84         {"Xmp.photoshop.DateCreated",           NULL,                           "Iptc.Application2.DateCreated"         },
  85         {"Xmp.dc.creator",                      NULL,                           "Iptc.Application2.Byline"              },
  86         {"Xmp.photoshop.AuthorsPosition",       NULL,                           "Iptc.Application2.BylineTitle"         },
  87         {"Xmp.photoshop.City",                  NULL,                           "Iptc.Application2.City"                },
  88         {"Xmp.photoshop.State",                 NULL,                           "Iptc.Application2.ProvinceState"       },
  89         {"Xmp.iptc.CountryCode",                NULL,                           "Iptc.Application2.CountryCode"         },
  90         {"Xmp.photoshop.Country",               NULL,                           "Iptc.Application2.CountryName"         },
  91         {"Xmp.photoshop.TransmissionReference", NULL,                           "Iptc.Application2.TransmissionReference"},
  92         {"Xmp.photoshop.Headline",              NULL,                           "Iptc.Application2.Headline"            },
  93         {"Xmp.photoshop.Credit",                NULL,                           "Iptc.Application2.Credit"              },
  94         {"Xmp.photoshop.Source",                NULL,                           "Iptc.Application2.Source"              },
  95         {"Xmp.dc.rights",                       NULL,                           "Iptc.Application2.Copyright"           },
  96         {"Xmp.dc.description",                  NULL,                           "Iptc.Application2.Caption"             },
  97         {"Xmp.photoshop.CaptionWriter",         NULL,                           "Iptc.Application2.Writer"              },
  98         {NULL, NULL, NULL}
  99         };
 100
 101 static void _debug_exception(const char* file,
 102                              int line,
 103                              const char* func,
 104                              Exiv2::AnyError& e)
 105 {
 106         gchar *str = g_locale_from_utf8(e.what(), -1, NULL, NULL, NULL);
 107         DEBUG_1("%s:%d:%s:Exiv2: %s", file, line, func, str);
 108         g_free(str);
 109 }
 110
 111 #define debug_exception(e) _debug_exception(__FILE__, __LINE__, __func__, e)
 112
 113 struct _ExifData
 114 {
 115         Exiv2::ExifData::const_iterator exifIter; /* for exif_get_next_item */
 116         Exiv2::IptcData::const_iterator iptcIter; /* for exif_get_next_item */
 117 #if EXIV2_TEST_VERSION(0,16,0)
 118         Exiv2::XmpData::const_iterator xmpIter; /* for exif_get_next_item */
 119 #endif
 120
 121         virtual ~_ExifData()
 122         {
 123         }
 124
 125         virtual void writeMetadata(gchar *UNUSED(path) = NULL)
 126         {
 127                 g_critical("Unsupported method of writing metadata");
 128         }
 129
 130         virtual ExifData *original()
 131         {
 132                 return NULL;
 133         }
 134
 135         virtual Exiv2::Image *image() = 0;
 136
 137         virtual Exiv2::ExifData &exifData() = 0;
 138
 139         virtual Exiv2::IptcData &iptcData() = 0;
 140
 141 #if EXIV2_TEST_VERSION(0,16,0)
 142         virtual Exiv2::XmpData &xmpData() = 0;
 143 #endif
 144
 145         virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length) = 0;
 146
 147         virtual guchar *get_jpeg_color_profile(guint *data_len) = 0;
 148
 149         virtual std::string image_comment() const = 0;
 150
 151         virtual void set_image_comment(const std::string& comment) = 0;
 152 };
 153
 154 // This allows read-only access to the original metadata
 155 struct _ExifDataOriginal : public _ExifData
 156 {
 157 protected:
 158         Exiv2::Image::AutoPtr image_;
 159
 160         /* the icc profile in jpeg is not technically exif - store it here */
 161         unsigned char *cp_data_;
 162         guint cp_length_;
 163         gboolean valid_;
 164         gchar *pathl_;
 165
 166         Exiv2::ExifData emptyExifData_;
 167         Exiv2::IptcData emptyIptcData_;
 168 #if EXIV2_TEST_VERSION(0,16,0)
 169         Exiv2::XmpData emptyXmpData_;
 170 #endif
 171
 172 public:
 173         _ExifDataOriginal(Exiv2::Image::AutoPtr image)
 174         {
 175                 cp_data_ = NULL;
 176                 cp_length_ = 0;
 177                 image_ = image;
 178                 valid_ = TRUE;
 179         }
 180
 181         _ExifDataOriginal(gchar *path)
 182         {
 183                 cp_data_ = NULL;
 184                 cp_length_ = 0;
 185                 valid_ = TRUE;
 186
 187                 pathl_ = path_from_utf8(path);
 188                 try
 189                         {
 190                         image_ = Exiv2::ImageFactory::open(pathl_);
 191 //                      g_assert (image.get() != 0);
 192                         image_->readMetadata();
 193
 194 #if EXIV2_TEST_VERSION(0,16,0)
 195                         if (image_->mimeType() == "application/rdf+xml")
 196                                 {
 197                                 //Exiv2 sidecar converts xmp to exif and iptc, we don't want it.
 198                                 image_->clearExifData();
 199                                 image_->clearIptcData();
 200                                 }
 201 #endif
 202
 203 #if EXIV2_TEST_VERSION(0,14,0)
 204                         if (image_->mimeType() == "image/jpeg")
 205                                 {
 206                                 /* try to get jpeg color profile */
 207                                 Exiv2::BasicIo &io = image_->io();
 208                                 gint open = io.isopen();
 209                                 if (!open) io.open();
 210                                 if (io.isopen())
 211                                         {
 212                                         unsigned char *mapped = (unsigned char*)io.mmap();
 213                                         if (mapped) exif_jpeg_parse_color(this, mapped, io.size());
 214                                         io.munmap();
 215                                         }
 216                                 if (!open) io.close();
 217                                 }
 218 #endif
 219                         }
 220                 catch (Exiv2::AnyError& e)
 221                         {
 222                         valid_ = FALSE;
 223                         }
 224         }
 225
 226         virtual ~_ExifDataOriginal()
 227         {
 228                 if (cp_data_) g_free(cp_data_);
 229                 if (pathl_) g_free(pathl_);
 230         }
 231
 232         virtual Exiv2::Image *image()
 233         {
 234                 if (!valid_) return NULL;
 235                 return image_.get();
 236         }
 237
 238         virtual Exiv2::ExifData &exifData ()
 239         {
 240                 if (!valid_) return emptyExifData_;
 241                 return image_->exifData();
 242         }
 243
 244         virtual Exiv2::IptcData &iptcData ()
 245         {
 246                 if (!valid_) return emptyIptcData_;
 247                 return image_->iptcData();
 248         }
 249
 250 #if EXIV2_TEST_VERSION(0,16,0)
 251         virtual Exiv2::XmpData &xmpData ()
 252         {
 253                 if (!valid_) return emptyXmpData_;
 254                 return image_->xmpData();
 255         }
 256 #endif
 257
 258         virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length)
 259         {
 260                 if (cp_data_) g_free(cp_data_);
 261                 cp_data_ = cp_data;
 262                 cp_length_ = cp_length;
 263         }
 264
 265         virtual guchar *get_jpeg_color_profile(guint *data_len)
 266         {
 267                 if (cp_data_)
 268                 {
 269                         if (data_len) *data_len = cp_length_;
 270                         return (unsigned char *) g_memdup(cp_data_, cp_length_);
 271                 }
 272                 return NULL;
 273         }
 274
 275         virtual std::string image_comment() const
 276         {
 277                 return image_.get() ? image_->comment() : "";
 278         }
 279
 280         virtual void set_image_comment(const std::string& comment)
 281         {
 282                 if (image_.get())
 283                         image_->setComment(comment);
 284         }
 285 };
 286
 287 static void _ExifDataProcessed_update_xmp(gpointer key, gpointer value, gpointer data);
 288
 289 // This allows read-write access to the metadata
 290 struct _ExifDataProcessed : public _ExifData
 291 {
 292 protected:
 293         _ExifDataOriginal *imageData_;
 294         _ExifDataOriginal *sidecarData_;
 295
 296         Exiv2::ExifData exifData_;
 297         Exiv2::IptcData iptcData_;
 298 #if EXIV2_TEST_VERSION(0,16,0)
 299         Exiv2::XmpData xmpData_;
 300 #endif
 301
 302 public:
 303         _ExifDataProcessed(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp)
 304         {
 305                 imageData_ = new _ExifDataOriginal(path);
 306                 sidecarData_ = NULL;
 307 #if EXIV2_TEST_VERSION(0,16,0)
 308                 if (sidecar_path)
 309                         {
 310                         sidecarData_ = new _ExifDataOriginal(sidecar_path);
 311                         xmpData_ = sidecarData_->xmpData();
 312                         }
 313                 else
 314                         {
 315                         xmpData_ = imageData_->xmpData();
 316                         }
 317
 318 #endif
 319                 exifData_ = imageData_->exifData();
 320                 iptcData_ = imageData_->iptcData();
 321 #if EXIV2_TEST_VERSION(0,17,0)
 322                 try
 323                         {
 324                         syncExifWithXmp(exifData_, xmpData_);
 325                         }
 326                 catch (...)
 327                         {
 328                         DEBUG_1("Exiv2: Catching bug\n");
 329                         }
 330 #endif
 331                 if (modified_xmp)
 332                         {
 333                         g_hash_table_foreach(modified_xmp, _ExifDataProcessed_update_xmp, this);
 334                         }
 335         }
 336
 337         virtual ~_ExifDataProcessed()
 338         {
 339                 if (imageData_) delete imageData_;
 340                 if (sidecarData_) delete sidecarData_;
 341         }
 342
 343         virtual ExifData *original()
 344         {
 345                 return imageData_;
 346         }
 347
 348         virtual void writeMetadata(gchar *path = NULL)
 349         {
 350                 if (!path)
 351                         {
 352 #if EXIV2_TEST_VERSION(0,17,0)
 353                         if (options->metadata.save_legacy_IPTC)
 354                                 copyXmpToIptc(xmpData_, iptcData_);
 355                         else
 356                                 iptcData_.clear();
 357
 358                         copyXmpToExif(xmpData_, exifData_);
 359 #endif
 360                         Exiv2::Image *image = imageData_->image();
 361
 362 #ifdef HAVE_EXIV2_ERROR_CODE
 363                         if (!image) throw Exiv2::Error(Exiv2::kerInputDataReadFailed);
 364 #else
 365                         if (!image) throw Exiv2::Error(21);
 366 #endif
 367                         image->setExifData(exifData_);
 368                         image->setIptcData(iptcData_);
 369 #if EXIV2_TEST_VERSION(0,16,0)
 370                         image->setXmpData(xmpData_);
 371 #endif
 372                         image->writeMetadata();
 373                         }
 374                 else
 375                         {
 376 #if EXIV2_TEST_VERSION(0,17,0)
 377                         gchar *pathl = path_from_utf8(path);;
 378
 379                         Exiv2::Image::AutoPtr sidecar = Exiv2::ImageFactory::create(Exiv2::ImageType::xmp, pathl);
 380
 381                         g_free(pathl);
 382
 383                         sidecar->setXmpData(xmpData_);
 384                         sidecar->writeMetadata();
 385 #else
 386 #ifdef HAVE_EXIV2_ERROR_CODE
 387                         throw Exiv2::Error(Exiv2::kerNotAnImage, "xmp");
 388 #else
 389                         throw Exiv2::Error(3, "xmp");
 390 #endif
 391 #endif
 392                         }
 393         }
 394
 395         virtual Exiv2::Image *image()
 396         {
 397                 return imageData_->image();
 398         }
 399
 400         virtual Exiv2::ExifData &exifData ()
 401         {
 402                 return exifData_;
 403         }
 404
 405         virtual Exiv2::IptcData &iptcData ()
 406         {
 407                 return iptcData_;
 408         }
 409
 410 #if EXIV2_TEST_VERSION(0,16,0)
 411         virtual Exiv2::XmpData &xmpData ()
 412         {
 413                 return xmpData_;
 414         }
 415 #endif
 416
 417         virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length)
 418         {
 419                 imageData_->add_jpeg_color_profile(cp_data, cp_length);
 420         }
 421
 422         virtual guchar *get_jpeg_color_profile(guint *data_len)
 423         {
 424                 return imageData_->get_jpeg_color_profile(data_len);
 425         }
 426
 427         virtual std::string image_comment() const
 428         {
 429                 return imageData_->image_comment();
 430         }
 431
 432         virtual void set_image_comment(const std::string& comment)
 433         {
 434                 imageData_->set_image_comment(comment);
 435         }
 436 };
 437
 438
 439
 440
 441
 442
 443 void exif_init(void)
 444 {
 445 #ifdef EXV_ENABLE_NLS
 446         bind_textdomain_codeset (EXV_PACKAGE, "UTF-8");
 447 #endif
 448
 449 #ifdef EXV_ENABLE_BMFF
 450         Exiv2::enableBMFF(TRUE);
 451 #endif
 452 }
 453
 454
 455
 456 static void _ExifDataProcessed_update_xmp(gpointer key, gpointer value, gpointer data)
 457 {
 458         exif_update_metadata((ExifData *)data, (gchar *)key, (GList *)value);
 459 }
 460
 461 ExifData *exif_read(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp)
 462 {
 463         DEBUG_1("exif read %s, sidecar: %s", path, sidecar_path ? sidecar_path : "-");
 464         try {
 465                 return new _ExifDataProcessed(path, sidecar_path, modified_xmp);
 466         }
 467         catch (Exiv2::AnyError& e) {
 468                 debug_exception(e);
 469                 return NULL;
 470         }
 471
 472 }
 473
 474 gboolean exif_write(ExifData *exif)
 475 {
 476         try {
 477                 exif->writeMetadata();
 478                 return TRUE;
 479         }
 480         catch (Exiv2::AnyError& e) {
 481                 debug_exception(e);
 482                 return FALSE;
 483         }
 484 }
 485
 486 gboolean exif_write_sidecar(ExifData *exif, gchar *path)
 487 {
 488         try {
 489                 exif->writeMetadata(path);
 490                 return TRUE;
 491         }
 492         catch (Exiv2::AnyError& e) {
 493                 debug_exception(e);
 494                 return FALSE;
 495         }
 496
 497 }
 498
 499
 500 void exif_free(ExifData *exif)
 501 {
 502         if (!exif) return;
 503         g_assert(dynamic_cast<_ExifDataProcessed *>(exif)); // this should not be called on ExifDataOriginal
 504         delete exif;
 505 }
 506
 507 ExifData *exif_get_original(ExifData *exif)
 508 {
 509         return exif->original();
 510 }
 511
 512
 513 ExifItem *exif_get_item(ExifData *exif, const gchar *key)
 514 {
 515         try {
 516                 Exiv2::Metadatum *item = NULL;
 517                 try {
 518                         Exiv2::ExifKey ekey(key);
 519                         Exiv2::ExifData::iterator pos = exif->exifData().findKey(ekey);
 520                         if (pos == exif->exifData().end()) return NULL;
 521                         item = &*pos;
 522                 }
 523                 catch (Exiv2::AnyError& e) {
 524                         try {
 525                                 Exiv2::IptcKey ekey(key);
 526                                 Exiv2::IptcData::iterator pos = exif->iptcData().findKey(ekey);
 527                                 if (pos == exif->iptcData().end()) return NULL;
 528                                 item = &*pos;
 529                         }
 530                         catch (Exiv2::AnyError& e) {
 531 #if EXIV2_TEST_VERSION(0,16,0)
 532                                 Exiv2::XmpKey ekey(key);
 533                                 Exiv2::XmpData::iterator pos = exif->xmpData().findKey(ekey);
 534                                 if (pos == exif->xmpData().end()) return NULL;
 535                                 item = &*pos;
 536 #endif
 537                         }
 538                 }
 539                 return (ExifItem *)item;
 540         }
 541         catch (Exiv2::AnyError& e) {
 542                 debug_exception(e);
 543                 return NULL;
 544         }
 545 }
 546
 547 ExifItem *exif_add_item(ExifData *exif, const gchar *key)
 548 {
 549         try {
 550                 Exiv2::Metadatum *item = NULL;
 551                 try {
 552                         Exiv2::ExifKey ekey(key);
 553                         exif->exifData().add(ekey, NULL);
 554                         Exiv2::ExifData::iterator pos = exif->exifData().end(); // a hack, there should be a better way to get the currently added item
 555                         pos--;
 556                         item = &*pos;
 557                 }
 558                 catch (Exiv2::AnyError& e) {
 559                         try {
 560                                 Exiv2::IptcKey ekey(key);
 561                                 exif->iptcData().add(ekey, NULL);
 562                                 Exiv2::IptcData::iterator pos = exif->iptcData().end();
 563                                 pos--;
 564                                 item = &*pos;
 565                         }
 566                         catch (Exiv2::AnyError& e) {
 567 #if EXIV2_TEST_VERSION(0,16,0)
 568                                 Exiv2::XmpKey ekey(key);
 569                                 exif->xmpData().add(ekey, NULL);
 570                                 Exiv2::XmpData::iterator pos = exif->xmpData().end();
 571                                 pos--;
 572                                 item = &*pos;
 573 #endif
 574                         }
 575                 }
 576                 return (ExifItem *)item;
 577         }
 578         catch (Exiv2::AnyError& e) {
 579                 debug_exception(e);
 580                 return NULL;
 581         }
 582 }
 583
 584
 585 ExifItem *exif_get_first_item(ExifData *exif)
 586 {
 587         try {
 588                 exif->exifIter = exif->exifData().begin();
 589                 exif->iptcIter = exif->iptcData().begin();
 590 #if EXIV2_TEST_VERSION(0,16,0)
 591                 exif->xmpIter = exif->xmpData().begin();
 592 #endif
 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         }
 616         catch (Exiv2::AnyError& e) {
 617                 debug_exception(e);
 618                 return NULL;
 619         }
 620 }
 621
 622 ExifItem *exif_get_next_item(ExifData *exif)
 623 {
 624         try {
 625                 if (exif->exifIter != exif->exifData().end())
 626                         {
 627                         const Exiv2::Metadatum *item = &*exif->exifIter;
 628                         exif->exifIter++;
 629                         return (ExifItem *)item;
 630                 }
 631                 if (exif->iptcIter != exif->iptcData().end())
 632                         {
 633                         const Exiv2::Metadatum *item = &*exif->iptcIter;
 634                         exif->iptcIter++;
 635                         return (ExifItem *)item;
 636                 }
 637 #if EXIV2_TEST_VERSION(0,16,0)
 638                 if (exif->xmpIter != exif->xmpData().end())
 639                         {
 640                         const Exiv2::Metadatum *item = &*exif->xmpIter;
 641                         exif->xmpIter++;
 642                         return (ExifItem *)item;
 643                 }
 644 #endif
 645                 return NULL;
 646         }
 647         catch (Exiv2::AnyError& e) {
 648                 debug_exception(e);
 649                 return NULL;
 650         }
 651 }
 652
 653 char *exif_item_get_tag_name(ExifItem *item)
 654 {
 655         try {
 656                 if (!item) return NULL;
 657                 return g_strdup(((Exiv2::Metadatum *)item)->key().c_str());
 658         }
 659         catch (Exiv2::AnyError& e) {
 660                 debug_exception(e);
 661                 return NULL;
 662         }
 663 }
 664
 665 guint exif_item_get_tag_id(ExifItem *item)
 666 {
 667         try {
 668                 if (!item) return 0;
 669                 return ((Exiv2::Metadatum *)item)->tag();
 670         }
 671         catch (Exiv2::AnyError& e) {
 672                 debug_exception(e);
 673                 return 0;
 674         }
 675 }
 676
 677 guint exif_item_get_elements(ExifItem *item)
 678 {
 679         try {
 680                 if (!item) return 0;
 681                 return ((Exiv2::Metadatum *)item)->count();
 682         }
 683         catch (Exiv2::AnyError& e) {
 684                 debug_exception(e);
 685                 return 0;
 686         }
 687 }
 688
 689 char *exif_item_get_data(ExifItem *item, guint *data_len)
 690 {
 691         try {
 692                 if (!item) return 0;
 693                 Exiv2::Metadatum *md = (Exiv2::Metadatum *)item;
 694                 if (data_len) *data_len = md->size();
 695                 char *data = (char *)g_malloc(md->size());
 696                 long res = md->copy((Exiv2::byte *)data, Exiv2::littleEndian /* should not matter */);
 697                 g_assert(res == md->size());
 698                 return data;
 699         }
 700         catch (Exiv2::AnyError& e) {
 701                 debug_exception(e);
 702                 return NULL;
 703         }
 704 }
 705
 706 char *exif_item_get_description(ExifItem *item)
 707 {
 708         try {
 709                 if (!item) return NULL;
 710                 return utf8_validate_or_convert(((Exiv2::Metadatum *)item)->tagLabel().c_str());
 711         }
 712         catch (std::exception& e) {
 713 //              debug_exception(e);
 714                 return NULL;
 715         }
 716 }
 717
 718 /*
 719 invalidTypeId, unsignedByte, asciiString, unsignedShort,
 720   unsignedLong, unsignedRational, signedByte, undefined,
 721   signedShort, signedLong, signedRational, string,
 722   date, time, comment, directory,
 723   xmpText, xmpAlt, xmpBag, xmpSeq,
 724   langAlt, lastTypeId
 725 */
 726
 727 static guint format_id_trans_tbl [] = {
 728         EXIF_FORMAT_UNKNOWN,
 729         EXIF_FORMAT_BYTE_UNSIGNED,
 730         EXIF_FORMAT_STRING,
 731         EXIF_FORMAT_SHORT_UNSIGNED,
 732         EXIF_FORMAT_LONG_UNSIGNED,
 733         EXIF_FORMAT_RATIONAL_UNSIGNED,
 734         EXIF_FORMAT_BYTE,
 735         EXIF_FORMAT_UNDEFINED,
 736         EXIF_FORMAT_SHORT,
 737         EXIF_FORMAT_LONG,
 738         EXIF_FORMAT_RATIONAL,
 739         EXIF_FORMAT_STRING,
 740         EXIF_FORMAT_STRING,
 741         EXIF_FORMAT_STRING,
 742         EXIF_FORMAT_UNDEFINED,
 743         EXIF_FORMAT_STRING,
 744         EXIF_FORMAT_STRING,
 745         EXIF_FORMAT_STRING,
 746         EXIF_FORMAT_STRING
 747         };
 748
 749
 750
 751 guint exif_item_get_format_id(ExifItem *item)
 752 {
 753         try {
 754                 if (!item) return EXIF_FORMAT_UNKNOWN;
 755                 guint id = ((Exiv2::Metadatum *)item)->typeId();
 756                 if (id >= (sizeof(format_id_trans_tbl) / sizeof(format_id_trans_tbl[0])) ) return EXIF_FORMAT_UNKNOWN;
 757                 return format_id_trans_tbl[id];
 758         }
 759         catch (Exiv2::AnyError& e) {
 760                 debug_exception(e);
 761                 return EXIF_FORMAT_UNKNOWN;
 762         }
 763 }
 764
 765 const char *exif_item_get_format_name(ExifItem *item, gboolean UNUSED(brief))
 766 {
 767         try {
 768                 if (!item) return NULL;
 769                 return ((Exiv2::Metadatum *)item)->typeName();
 770         }
 771         catch (Exiv2::AnyError& e) {
 772                 debug_exception(e);
 773                 return NULL;
 774         }
 775 }
 776
 777
 778 gchar *exif_item_get_data_as_text(ExifItem *item)
 779 {
 780         try {
 781                 if (!item) return NULL;
 782                 Exiv2::Metadatum *metadatum = (Exiv2::Metadatum *)item;
 783 #if EXIV2_TEST_VERSION(0,17,0)
 784                 return utf8_validate_or_convert(metadatum->print().c_str());
 785 #else
 786                 std::stringstream str;
 787                 Exiv2::Exifdatum *exifdatum;
 788                 Exiv2::Iptcdatum *iptcdatum;
 789 #if EXIV2_TEST_VERSION(0,16,0)
 790                 Exiv2::Xmpdatum *xmpdatum;
 791 #endif
 792                 if ((exifdatum = dynamic_cast<Exiv2::Exifdatum *>(metadatum)))
 793                         str << *exifdatum;
 794                 else if ((iptcdatum = dynamic_cast<Exiv2::Iptcdatum *>(metadatum)))
 795                         str << *iptcdatum;
 796 #if EXIV2_TEST_VERSION(0,16,0)
 797                 else if ((xmpdatum = dynamic_cast<Exiv2::Xmpdatum *>(metadatum)))
 798                         str << *xmpdatum;
 799 #endif
 800
 801                 return utf8_validate_or_convert(str.str().c_str());
 802 #endif
 803         }
 804         catch (Exiv2::AnyError& e) {
 805                 return NULL;
 806         }
 807 }
 808
 809 gchar *exif_item_get_string(ExifItem *item, int idx)
 810 {
 811         try {
 812                 if (!item) return NULL;
 813                 Exiv2::Metadatum *em = (Exiv2::Metadatum *)item;
 814 #if EXIV2_TEST_VERSION(0,16,0)
 815                 std::string str = em->toString(idx);
 816 #else
 817                 std::string str = em->toString(); /**< @FIXME ?? */
 818 #endif
 819                 if (idx == 0 && str == "") str = em->toString();
 820                 if (str.length() > 5 && str.substr(0, 5) == "lang=")
 821                         {
 822                         std::string::size_type pos = str.find_first_of(' ');
 823                         if (pos != std::string::npos) str = str.substr(pos+1);
 824                         }
 825
 826                 return utf8_validate_or_convert(str.c_str());
 827         }
 828         catch (Exiv2::AnyError& e) {
 829                 return NULL;
 830         }
 831 }
 832
 833
 834 gint exif_item_get_integer(ExifItem *item, gint *value)
 835 {
 836         try {
 837                 if (!item || exif_item_get_elements(item) == 0) return 0;
 838                 *value = ((Exiv2::Metadatum *)item)->toLong();
 839                 return 1;
 840         }
 841         catch (Exiv2::AnyError& e) {
 842                 debug_exception(e);
 843                 return 0;
 844         }
 845 }
 846
 847 ExifRational *exif_item_get_rational(ExifItem *item, gint *sign, guint n)
 848 {
 849         try {
 850                 if (!item) return NULL;
 851                 if (n >= exif_item_get_elements(item)) return NULL;
 852                 Exiv2::Rational v = ((Exiv2::Metadatum *)item)->toRational(n);
 853                 static ExifRational ret;
 854                 ret.num = v.first;
 855                 ret.den = v.second;
 856                 if (sign) *sign = (((Exiv2::Metadatum *)item)->typeId() == Exiv2::signedRational);
 857                 return &ret;
 858         }
 859         catch (Exiv2::AnyError& e) {
 860                 debug_exception(e);
 861                 return NULL;
 862         }
 863 }
 864
 865 gchar *exif_get_tag_description_by_key(const gchar *key)
 866 {
 867         try {
 868                 Exiv2::ExifKey ekey(key);
 869                 return utf8_validate_or_convert(ekey.tagLabel().c_str());
 870         }
 871         catch (Exiv2::AnyError& e) {
 872                 try {
 873                         Exiv2::IptcKey ikey(key);
 874                         return utf8_validate_or_convert(ikey.tagLabel().c_str());
 875                 }
 876                 catch (Exiv2::AnyError& e) {
 877                         try {
 878 #if EXIV2_TEST_VERSION(0,16,0)
 879                                 Exiv2::XmpKey xkey(key);
 880                                 return utf8_validate_or_convert(xkey.tagLabel().c_str());
 881 #endif
 882                         }
 883                         catch (Exiv2::AnyError& e) {
 884                                 debug_exception(e);
 885                                 return NULL;
 886                         }
 887                 }
 888         }
 889         return NULL;
 890 }
 891
 892 static const AltKey *find_alt_key(const gchar *xmp_key)
 893 {
 894         gint i = 0;
 895
 896         while (alt_keys[i].xmp_key)
 897                 {
 898                 if (strcmp(xmp_key, alt_keys[i].xmp_key) == 0) return &alt_keys[i];
 899                 i++;
 900                 }
 901         return NULL;
 902 }
 903
 904 static gint exif_update_metadata_simple(ExifData *exif, const gchar *key, const GList *values)
 905 {
 906         try {
 907                 const GList *work = values;
 908
 909                 try {
 910                         Exiv2::ExifKey ekey(key);
 911
 912                         Exiv2::ExifData::iterator pos = exif->exifData().findKey(ekey);
 913                         while (pos != exif->exifData().end())
 914                                 {
 915                                 exif->exifData().erase(pos);
 916                                 pos = exif->exifData().findKey(ekey);
 917                                 }
 918
 919                         while (work)
 920                                 {
 921                                 exif->exifData()[key] = (gchar *)work->data;
 922                                 work = work->next;
 923                                 }
 924                 }
 925                 catch (Exiv2::AnyError& e) {
 926 #if EXIV2_TEST_VERSION(0,16,0)
 927                         try
 928 #endif
 929                         {
 930                                 Exiv2::IptcKey ekey(key);
 931                                 Exiv2::IptcData::iterator pos = exif->iptcData().findKey(ekey);
 932                                 while (pos != exif->iptcData().end())
 933                                         {
 934                                         exif->iptcData().erase(pos);
 935                                         pos = exif->iptcData().findKey(ekey);
 936                                         }
 937
 938                                 while (work)
 939                                         {
 940                                         exif->iptcData()[key] = (gchar *)work->data;
 941                                         work = work->next;
 942                                         }
 943                         }
 944 #if EXIV2_TEST_VERSION(0,16,0)
 945                         catch (Exiv2::AnyError& e) {
 946                                 Exiv2::XmpKey ekey(key);
 947                                 Exiv2::XmpData::iterator pos = exif->xmpData().findKey(ekey);
 948                                 while (pos != exif->xmpData().end())
 949                                         {
 950                                         exif->xmpData().erase(pos);
 951                                         pos = exif->xmpData().findKey(ekey);
 952                                         }
 953
 954                                 while (work)
 955                                         {
 956                                         exif->xmpData()[key] = (gchar *)work->data;
 957                                         work = work->next;
 958                                         }
 959                         }
 960 #endif
 961                 }
 962                 return 1;
 963         }
 964         catch (Exiv2::AnyError& e) {
 965                 debug_exception(e);
 966                 return 0;
 967         }
 968 }
 969
 970 gint exif_update_metadata(ExifData *exif, const gchar *key, const GList *values)
 971 {
 972         gint ret = exif_update_metadata_simple(exif, key, values);
 973
 974         if (
 975 #if !EXIV2_TEST_VERSION(0,17,0)
 976             TRUE || /* no conversion support */
 977 #endif
 978             !values || /* deleting item */
 979             !ret  /* writing to the explicitly given xmp tag failed */
 980             )
 981                 {
 982                 /* deleted xmp metadatum can't be converted, we have to delete also the corresponding legacy tag */
 983                 /* if we can't write xmp, update at least the legacy tag */
 984                 const AltKey *alt_key = find_alt_key(key);
 985                 if (alt_key && alt_key->iptc_key)
 986                         ret = exif_update_metadata_simple(exif, alt_key->iptc_key, values);
 987
 988                 if (alt_key && alt_key->exif_key)
 989                         ret = exif_update_metadata_simple(exif, alt_key->exif_key, values);
 990                 }
 991         return ret;
 992 }
 993
 994
 995 static GList *exif_add_value_to_glist(GList *list, Exiv2::Metadatum &item, MetadataFormat format, const Exiv2::ExifData *metadata)
 996 {
 997 #if EXIV2_TEST_VERSION(0,16,0)
 998         Exiv2::TypeId id = item.typeId();
 999         if (format == METADATA_FORMATTED ||
1000             id == Exiv2::asciiString ||
1001             id == Exiv2::undefined ||
1002             id == Exiv2::string ||
1003             id == Exiv2::date ||
1004             id == Exiv2::time ||
1005             id == Exiv2::xmpText ||
1006             id == Exiv2::langAlt ||
1007             id == Exiv2::comment
1008             )
1009                 {
1010 #endif
1011                 /* read as a single entry */
1012                 std::string str;
1013
1014                 if (format == METADATA_FORMATTED)
1015                         {
1016 #if EXIV2_TEST_VERSION(0,17,0)
1017                         str = item.print(
1018 #if EXIV2_TEST_VERSION(0,18,0)
1019                                         metadata
1020 #endif
1021                                         );
1022 #else
1023                         std::stringstream stream;
1024                         Exiv2::Exifdatum *exifdatum;
1025                         Exiv2::Iptcdatum *iptcdatum;
1026 #if EXIV2_TEST_VERSION(0,16,0)
1027                         Exiv2::Xmpdatum *xmpdatum;
1028 #endif
1029                         if ((exifdatum = dynamic_cast<Exiv2::Exifdatum *>(&item)))
1030                                 stream << *exifdatum;
1031                         else if ((iptcdatum = dynamic_cast<Exiv2::Iptcdatum *>(&item)))
1032                                 stream << *iptcdatum;
1033 #if EXIV2_TEST_VERSION(0,16,0)
1034                         else if ((xmpdatum = dynamic_cast<Exiv2::Xmpdatum *>(&item)))
1035                                 stream << *xmpdatum;
1036 #endif
1037                         str = stream.str();
1038 #endif
1039                         if (str.length() > 1024)
1040                                 {
1041                                 /* truncate very long strings, they cause problems in gui */
1042                                 str.erase(1024);
1043                                 str.append("...");
1044                                 }
1045                         }
1046                 else
1047                         {
1048                         str = item.toString();
1049                         }
1050                 if (str.length() > 5 && str.substr(0, 5) == "lang=")
1051                         {
1052                         std::string::size_type pos = str.find_first_of(' ');
1053                         if (pos != std::string::npos) str = str.substr(pos+1);
1054                         }
1055                 list = g_list_append(list, utf8_validate_or_convert(str.c_str()));
1056 #if EXIV2_TEST_VERSION(0,16,0)
1057                 }
1058         else
1059                 {
1060                 /* read as a list */
1061                 gint i;
1062                 for (i = 0; i < item.count(); i++)
1063                         list = g_list_append(list, utf8_validate_or_convert(item.toString(i).c_str()));
1064                 }
1065 #endif
1066         return list;
1067 }
1068
1069 static GList *exif_get_metadata_simple(ExifData *exif, const gchar *key, MetadataFormat format)
1070 {
1071         GList *list = NULL;
1072         try {
1073                 try {
1074                         Exiv2::ExifKey ekey(key);
1075                         Exiv2::ExifData::iterator pos = exif->exifData().findKey(ekey);
1076                         if (pos != exif->exifData().end())
1077                                 list = exif_add_value_to_glist(list, *pos, format, &exif->exifData());
1078
1079                 }
1080                 catch (Exiv2::AnyError& e) {
1081                         try {
1082                                 Exiv2::IptcKey ekey(key);
1083                                 Exiv2::IptcData::iterator pos = exif->iptcData().begin();
1084                                 while (pos != exif->iptcData().end())
1085                                         {
1086                                         if (pos->key() == key)
1087                                                 list = exif_add_value_to_glist(list, *pos, format, NULL);
1088                                         ++pos;
1089                                         }
1090
1091                         }
1092                         catch (Exiv2::AnyError& e) {
1093 #if EXIV2_TEST_VERSION(0,16,0)
1094                                 Exiv2::XmpKey ekey(key);
1095                                 Exiv2::XmpData::iterator pos = exif->xmpData().findKey(ekey);
1096                                 if (pos != exif->xmpData().end())
1097                                         list = exif_add_value_to_glist(list, *pos, format, NULL);
1098 #endif
1099                         }
1100                 }
1101         }
1102         catch (Exiv2::AnyError& e) {
1103                 debug_exception(e);
1104         }
1105         return list;
1106 }
1107
1108 GList *exif_get_metadata(ExifData *exif, const gchar *key, MetadataFormat format)
1109 {
1110         GList *list = NULL;
1111
1112         if (!key) return NULL;
1113
1114         if (format == METADATA_FORMATTED)
1115                 {
1116                 gchar *text;
1117                 gint key_valid;
1118                 text = exif_get_formatted_by_key(exif, key, &key_valid);
1119                 if (key_valid) return g_list_append(NULL, text);
1120                 }
1121
1122         list = exif_get_metadata_simple(exif, key, format);
1123
1124         /* the following code can be ifdefed out as soon as Exiv2 supports it */
1125         if (!list)
1126                 {
1127                 const AltKey *alt_key = find_alt_key(key);
1128                 if (alt_key && alt_key->iptc_key)
1129                         list = exif_get_metadata_simple(exif, alt_key->iptc_key, format);
1130
1131 #if !EXIV2_TEST_VERSION(0,17,0)
1132                 /* with older Exiv2 versions exif is not synced */
1133                 if (!list && alt_key && alt_key->exif_key)
1134                         list = exif_get_metadata_simple(exif, alt_key->exif_key, format);
1135 #endif
1136                 }
1137         return list;
1138 }
1139
1140
1141 void exif_add_jpeg_color_profile(ExifData *exif, unsigned char *cp_data, guint cp_length)
1142 {
1143         exif->add_jpeg_color_profile(cp_data, cp_length);
1144 }
1145
1146 guchar *exif_get_color_profile(ExifData *exif, guint *data_len)
1147 {
1148         guchar *ret = exif->get_jpeg_color_profile(data_len);
1149         if (ret) return ret;
1150
1151         ExifItem *prof_item = exif_get_item(exif, "Exif.Image.InterColorProfile");
1152         if (prof_item && exif_item_get_format_id(prof_item) == EXIF_FORMAT_UNDEFINED)
1153                 ret = (guchar *)exif_item_get_data(prof_item, data_len);
1154         return ret;
1155 }
1156
1157 gchar* exif_get_image_comment(FileData* fd)
1158 {
1159         if (!fd || !fd->exif)
1160                 return g_strdup("");
1161
1162         return g_strdup(fd->exif->image_comment().c_str());
1163 }
1164
1165 void exif_set_image_comment(FileData* fd, const gchar* comment)
1166 {
1167         if (!fd || !fd->exif)
1168                 return;
1169
1170         fd->exif->set_image_comment(comment ? comment : "");
1171 }
1172
1173
1174 #if EXIV2_TEST_VERSION(0,17,90)
1175
1176 guchar *exif_get_preview(ExifData *exif, guint *data_len, gint requested_width, gint requested_height)
1177 {
1178         if (!exif) return NULL;
1179
1180         if (!exif->image()) return NULL;
1181
1182         std::string const path = exif->image()->io().path();
1183         /* given image pathname, first do simple (and fast) file extension test */
1184         gboolean is_raw = filter_file_class(path.c_str(), FORMAT_CLASS_RAWIMAGE);
1185
1186         if (!is_raw && requested_width == 0) return NULL;
1187
1188         try {
1189
1190                 Exiv2::PreviewManager pm(*exif->image());
1191
1192                 Exiv2::PreviewPropertiesList list = pm.getPreviewProperties();
1193
1194                 if (!list.empty())
1195                         {
1196                         Exiv2::PreviewPropertiesList::iterator pos;
1197                         Exiv2::PreviewPropertiesList::iterator last = --list.end();
1198
1199                         if (requested_width == 0)
1200                                 {
1201                                 pos = last; // the largest
1202                                 }
1203                         else
1204                                 {
1205                                 pos = list.begin();
1206                                 while (pos != last)
1207                                         {
1208                                         if (pos->width_ >= (uint32_t)requested_width &&
1209                                             pos->height_ >= (uint32_t)requested_height) break;
1210                                         ++pos;
1211                                         }
1212
1213                                 // we are not interested in smaller thumbnails in normal image formats - we can use full image instead
1214                                 if (!is_raw)
1215                                         {
1216                                         if (pos->width_ < (uint32_t)requested_width || pos->height_ < (uint32_t)requested_height) return NULL;
1217                                         }
1218                                 }
1219
1220                         Exiv2::PreviewImage image = pm.getPreviewImage(*pos);
1221
1222                         Exiv2::DataBuf buf = image.copy();
1223                         std::pair<Exiv2::byte*, long> p = buf.release();
1224
1225                         *data_len = p.second;
1226                         return p.first;
1227                         }
1228                 return NULL;
1229         }
1230         catch (Exiv2::AnyError& e) {
1231                 debug_exception(e);
1232                 return NULL;
1233         }
1234 }
1235
1236 void exif_free_preview(guchar *buf)
1237 {
1238         delete[] (Exiv2::byte*)buf;
1239 }
1240 #endif
1241
1242 #if !EXIV2_TEST_VERSION(0,17,90)
1243
1244 /* This is a dirty hack to support raw file preview, bassed on
1245 tiffparse.cpp from Exiv2 examples */
1246
1247 class RawFile {
1248         public:
1249
1250         RawFile(Exiv2::BasicIo &io);
1251         ~RawFile();
1252
1253         const Exiv2::Value *find(uint16_t tag, uint16_t group);
1254
1255         unsigned long preview_offset();
1256
1257         private:
1258         int type;
1259         Exiv2::TiffComponent::AutoPtr rootDir;
1260         Exiv2::BasicIo &io_;
1261         const Exiv2::byte *map_data;
1262         size_t map_len;
1263         unsigned long offset;
1264 };
1265
1266 typedef struct _UnmapData UnmapData;
1267 struct _UnmapData
1268 {
1269         guchar *ptr;
1270         guchar *map_data;
1271         size_t map_len;
1272 };
1273
1274 static GList *exif_unmap_list = 0;
1275
1276 guchar *exif_get_preview(ExifData *exif, guint *data_len, gint requested_width, gint requested_height)
1277 {
1278         unsigned long offset;
1279
1280         if (!exif) return NULL;
1281         if (!exif->image()) return NULL;
1282
1283         std::string const path = exif->image()->io().path();
1284
1285         /* given image pathname, first do simple (and fast) file extension test */
1286         if (!filter_file_class(path.c_str(), FORMAT_CLASS_RAWIMAGE)) return NULL;
1287
1288         try {
1289                 struct stat st;
1290                 guchar *map_data;
1291                 size_t map_len;
1292                 UnmapData *ud;
1293                 int fd;
1294
1295                 RawFile rf(exif->image()->io());
1296                 offset = rf.preview_offset();
1297                 DEBUG_1("%s: offset %lu", path.c_str(), offset);
1298
1299                 fd = open(path.c_str(), O_RDONLY);
1300                 if (fd == -1)
1301                         {
1302                         return NULL;
1303                         }
1304
1305                 if (fstat(fd, &st) == -1)
1306                         {
1307                         close(fd);
1308                         return NULL;
1309                         }
1310                 map_len = st.st_size;
1311                 map_data = (guchar *) mmap(0, map_len, PROT_READ, MAP_PRIVATE, fd, 0);
1312                 close(fd);
1313                 if (map_data == MAP_FAILED)
1314                         {
1315                         return NULL;
1316                         }
1317                 *data_len = map_len - offset;
1318                 ud = g_new(UnmapData, 1);
1319                 ud->ptr = map_data + offset;
1320                 ud->map_data = map_data;
1321                 ud->map_len = map_len;
1322
1323                 exif_unmap_list = g_list_prepend(exif_unmap_list, ud);
1324                 return ud->ptr;
1325
1326         }
1327         catch (Exiv2::AnyError& e) {
1328                 debug_exception(e);
1329         }
1330         return NULL;
1331
1332 }
1333
1334 void exif_free_preview(guchar *buf)
1335 {
1336         GList *work = exif_unmap_list;
1337
1338         while (work)
1339                 {
1340                 UnmapData *ud = (UnmapData *)work->data;
1341                 if (ud->ptr == buf)
1342                         {
1343                         munmap(ud->map_data, ud->map_len);
1344                         exif_unmap_list = g_list_remove_link(exif_unmap_list, work);
1345                         g_free(ud);
1346                         return;
1347                         }
1348                 work = work->next;
1349                 }
1350         g_assert_not_reached();
1351 }
1352
1353 using namespace Exiv2;
1354
1355 RawFile::RawFile(BasicIo &io) : io_(io), map_data(NULL), map_len(0), offset(0)
1356 {
1357 /*
1358         struct stat st;
1359         if (fstat(fd, &st) == -1)
1360                 {
1361                 throw Error(14);
1362                 }
1363         map_len = st.st_size;
1364         map_data = (Exiv2::byte *) mmap(0, map_len, PROT_READ, MAP_PRIVATE, fd, 0);
1365         if (map_data == MAP_FAILED)
1366                 {
1367                 throw Error(14);
1368                 }
1369 */
1370         if (io.open() != 0) {
1371             throw Error(9, io.path(), strError());
1372         }
1373
1374         map_data = io.mmap();
1375         map_len = io.size();
1376
1377
1378         type = Exiv2::ImageFactory::getType(map_data, map_len);
1379
1380 #if EXIV2_TEST_VERSION(0,16,0)
1381         TiffHeaderBase *tiffHeader = NULL;
1382 #else
1383         TiffHeade2 *tiffHeader = NULL;
1384 #endif
1385         Cr2Header *cr2Header = NULL;
1386
1387         switch (type) {
1388                 case Exiv2::ImageType::tiff:
1389                         tiffHeader = new TiffHeade2();
1390                         break;
1391                 case Exiv2::ImageType::cr2:
1392                         cr2Header = new Cr2Header();
1393                         break;
1394 #if EXIV2_TEST_VERSION(0,16,0)
1395                 case Exiv2::ImageType::orf:
1396                         tiffHeader = new OrfHeader();
1397                         break;
1398 #endif
1399 #if EXIV2_TEST_VERSION(0,13,0)
1400                 case Exiv2::ImageType::raf:
1401                         if (map_len < 84 + 4) throw Error(14);
1402                         offset = getULong(map_data + 84, bigEndian);
1403                         return;
1404 #endif
1405                 case Exiv2::ImageType::crw:
1406                         {
1407                         // Parse the image, starting with a CIFF header component
1408                         Exiv2::CiffHeader::AutoPtr parseTree(new Exiv2::CiffHeader);
1409                         parseTree->read(map_data, map_len);
1410                         CiffComponent *entry = parseTree->findComponent(0x2007, 0);
1411                         if (entry) offset =  entry->pData() - map_data;
1412                         return;
1413                         }
1414
1415                 default:
1416                         throw Error(3, "RAW");
1417         }
1418
1419         // process tiff-like formats
1420
1421         TiffCompFactoryFct createFct = TiffCreator::create;
1422
1423         rootDir = createFct(Tag::root, Group::none);
1424         if (0 == rootDir.get()) {
1425                 throw Error(1, "No root element defined in TIFF structure");
1426         }
1427
1428         if (tiffHeader)
1429                 {
1430                 if (!tiffHeader->read(map_data, map_len)) throw Error(3, "TIFF");
1431 #if EXIV2_TEST_VERSION(0,16,0)
1432                 rootDir->setStart(map_data + tiffHeader->offset());
1433 #else
1434                 rootDir->setStart(map_data + tiffHeader->ifdOffset());
1435 #endif
1436                 }
1437
1438         if (cr2Header)
1439                 {
1440                 rootDir->setStart(map_data + cr2Header->offset());
1441                 }
1442
1443         TiffRwState::AutoPtr state(new TiffRwState(tiffHeader ? tiffHeader->byteOrder() : littleEndian, 0, createFct));
1444
1445         TiffReader reader(map_data,
1446                           map_len,
1447                           rootDir.get(),
1448                           state);
1449
1450         rootDir->accept(reader);
1451
1452         if (tiffHeader)
1453                 delete tiffHeader;
1454         if (cr2Header)
1455                 delete cr2Header;
1456 }
1457
1458 RawFile::~RawFile(void)
1459 {
1460         io_.munmap();
1461         io_.close();
1462 }
1463
1464 const Value * RawFile::find(uint16_t tag, uint16_t group)
1465 {
1466         TiffFinder finder(tag, group);
1467         rootDir->accept(finder);
1468         TiffEntryBase* te = dynamic_cast<TiffEntryBase*>(finder.result());
1469         if (te)
1470                 {
1471                 DEBUG_1("(tag: %04x %04x) ", tag, group);
1472                 return te->pValue();
1473                 }
1474         else
1475                 return NULL;
1476 }
1477
1478 unsigned long RawFile::preview_offset(void)
1479 {
1480         const Value *val;
1481         if (offset) return offset;
1482
1483         if (type == Exiv2::ImageType::cr2)
1484                 {
1485                 val = find(0x111, Group::ifd0);
1486                 if (val) return val->toLong();
1487
1488                 return 0;
1489                 }
1490
1491         val = find(0x201, Group::sub0_0);
1492         if (val) return val->toLong();
1493
1494         val = find(0x201, Group::ifd0);
1495         if (val) return val->toLong();
1496
1497         val = find(0x201, Group::ignr); // for PEF files, originally it was probably ifd2
1498         if (val) return val->toLong();
1499
1500         val = find(0x111, Group::sub0_1); // dng
1501         if (val) return val->toLong();
1502
1503         return 0;
1504 }
1505
1506
1507 #endif
1508
1509
1510 #endif
1511 /* HAVE_EXIV2 */
1512 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */