exiv2-utils.cpp 40.4 KB
Newer Older
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
/* -*- Mode: CPP; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */

/*
 *  GThumb
 *
 *  Copyright (C) 2008-2009 Free Software Foundation, Inc.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
19
 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
Paolo Bacchilega's avatar
Paolo Bacchilega committed
20 21 22
 */

#include <config.h>
23
#include <glib.h>
24
#define GDK_PIXBUF_ENABLE_BACKEND
25
#include <gdk-pixbuf/gdk-pixbuf.h>
Paolo Bacchilega's avatar
Paolo Bacchilega committed
26 27 28 29 30 31 32 33
#include <exiv2/basicio.hpp>
#include <exiv2/error.hpp>
#include <exiv2/image.hpp>
#include <exiv2/exif.hpp>
#include <iostream>
#include <string>
#include <sstream>
#include <vector>
34
#include <iomanip>
Paolo Bacchilega's avatar
Paolo Bacchilega committed
35 36 37 38 39 40 41
#include <exiv2/xmp.hpp>
#include <gthumb.h>
#include "exiv2-utils.h"

using namespace std;


42 43 44
#define INVALID_VALUE "---"


Paolo Bacchilega's avatar
Paolo Bacchilega committed
45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62
/* Some bits of information may be contained in more than one metadata tag.
   The arrays below define the valid tags for a particular piece of
   information, in decreasing order of preference (best one first) */

const char *_DATE_TAG_NAMES[] = {
	"Exif::Image::DateTime",
	"Xmp::exif::DateTime",
	"Exif::Photo::DateTimeOriginal",
	"Xmp::exif::DateTimeOriginal",
	"Exif::Photo::DateTimeDigitized",
	"Xmp::exif::DateTimeDigitized",
	"Xmp::xmp::CreateDate",
	"Xmp::photoshop::DateCreated",
	"Xmp::xmp::ModifyDate",
	"Xmp::xmp::MetadataDate",
	NULL
};

63 64 65 66 67 68 69 70
const char *_LAST_DATE_TAG_NAMES[] = {
	"Exif::Image::DateTime",
	"Xmp::exif::DateTime",
	"Xmp::xmp::ModifyDate",
	"Xmp::xmp::MetadataDate",
	NULL
};

71 72 73 74 75 76 77 78 79 80
const char *_ORIGINAL_DATE_TAG_NAMES[] = {
	"Exif::Photo::DateTimeOriginal",
	"Xmp::exif::DateTimeOriginal",
	"Exif::Photo::DateTimeDigitized",
	"Xmp::exif::DateTimeDigitized",
	"Xmp::xmp::CreateDate",
	"Xmp::photoshop::DateCreated",
	NULL
};

Paolo Bacchilega's avatar
Paolo Bacchilega committed
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144
const char *_EXPOSURE_TIME_TAG_NAMES[] = {
	"Exif::Photo::ExposureTime",
	"Xmp::exif::ExposureTime",
	"Exif::Photo::ShutterSpeedValue",
	"Xmp::exif::ShutterSpeedValue",
	NULL
};

const char *_EXPOSURE_MODE_TAG_NAMES[] = {
	"Exif::Photo::ExposureMode",
	"Xmp::exif::ExposureMode",
	NULL
};

const char *_ISOSPEED_TAG_NAMES[] = {
	"Exif::Photo::ISOSpeedRatings",
	"Xmp::exif::ISOSpeedRatings",
	NULL
};

const char *_APERTURE_TAG_NAMES[] = {
	"Exif::Photo::ApertureValue",
	"Xmp::exif::ApertureValue",
	"Exif::Photo::FNumber",
	"Xmp::exif::FNumber",
	NULL
};

const char *_FOCAL_LENGTH_TAG_NAMES[] = {
	"Exif::Photo::FocalLength",
	"Xmp::exif::FocalLength",
	NULL
};

const char *_SHUTTER_SPEED_TAG_NAMES[] = {
	"Exif::Photo::ShutterSpeedValue",
	"Xmp::exif::ShutterSpeedValue",
	NULL
};

const char *_MAKE_TAG_NAMES[] = {
	"Exif::Image::Make",
	"Xmp::tiff::Make",
	NULL
};

const char *_MODEL_TAG_NAMES[] = {
	"Exif::Image::Model",
	"Xmp::tiff::Model",
	NULL
};

const char *_FLASH_TAG_NAMES[] = {
	"Exif::Photo::Flash",
	"Xmp::exif::Flash",
	NULL
};

const char *_ORIENTATION_TAG_NAMES[] = {
	"Exif::Image::Orientation",
	"Xmp::tiff::Orientation",
	NULL
};

145
const char *_DESCRIPTION_TAG_NAMES[] = {
146 147
	"Iptc::Application2::Caption",
	"Xmp::dc::description",
Paolo Bacchilega's avatar
Paolo Bacchilega committed
148 149
	"Exif::Photo::UserComment",
	"Exif::Image::ImageDescription",
150
	"Xmp::tiff::ImageDescription",
Paolo Bacchilega's avatar
Paolo Bacchilega committed
151 152 153 154
	"Iptc::Application2::Headline",
	NULL
};

155 156 157 158 159
const char *_TITLE_TAG_NAMES[] = {
	"Xmp::dc::title",
	NULL
};

Paolo Bacchilega's avatar
Paolo Bacchilega committed
160 161 162 163 164 165 166 167
const char *_LOCATION_TAG_NAMES[] = {
	"Xmp::iptc::Location",
	"Iptc::Application2::LocationName",
	NULL
};

const char *_KEYWORDS_TAG_NAMES[] = {
	"Iptc::Application2::Keywords",
Paolo Bacchilega's avatar
Paolo Bacchilega committed
168 169
	"Xmp::iptc::Keywords",
	"Xmp::dc::subject",
Paolo Bacchilega's avatar
Paolo Bacchilega committed
170 171 172
	NULL
};

173 174 175 176 177
const char *_RATING_TAG_NAMES[] = {
	"Xmp::xmp::Rating",
	NULL
};

178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198
const char *_AUTHOR_TAG_NAMES[] = {
	"Exif::Image::Artist",
	"Iptc::Application2::Byline",
	"Xmp::dc::creator",
	"Xmp::xmpDM::artist",
	"Xmp::tiff::Artist",
	"Xmp::plus::ImageCreator",
	"Xmp::plus::ImageCreatorName",
	NULL
};

const char *_COPYRIGHT_TAG_NAMES[] = {
	"Exif::Image::Copyright",
	"Iptc::Application2::Copyright",
	"Xmp::dc::rights",
	"Xmp::xmpDM::copyright",
	"Xmp::tiff::Copyright",
	"Xmp::plus::CopyrightOwner",
	"Xmp::plus::CopyrightOwnerName",
	NULL
};
199

200 201 202 203 204 205 206 207 208 209
/* Some evil camera fill in the ImageDescription or UserComment fields
   with useless fluff. Try to filter these out, so they do not show up
   as comments */
const char *stupid_comment_filter[] = {
	"OLYMPUS DIGITAL CAMERA",
	"SONY DSC",
	"KONICA MINOLTA DIGITAL CAMERA",
	"MINOLTA DIGITAL CAMERA",
	NULL };

Paolo Bacchilega's avatar
Paolo Bacchilega committed
210 211 212 213 214 215 216 217 218 219 220 221 222 223 224

inline static char *
exiv2_key_from_attribute (const char *attribute)
{
	return _g_replace (attribute, "::", ".");
}


inline static char *
exiv2_key_to_attribute (const char *key)
{
	return _g_replace (key, ".", "::");
}


225 226 227 228 229 230 231 232 233 234 235 236 237 238
static gboolean
attribute_is_date (const char *key)
{
	int i;

	for (i = 0; _DATE_TAG_NAMES[i] != NULL; i++) {
		if (strcmp (_DATE_TAG_NAMES[i], key) == 0)
			return TRUE;
	}

	return FALSE;
}


239 240 241 242 243 244 245
static GthMetadata *
create_metadata (const char *key,
		 const char *description,
		 const char *formatted_value,
		 const char *raw_value,
		 const char *category,
		 const char *type_name)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
246 247 248 249 250 251 252
{
	char            *attribute;
	GthMetadataInfo *metadata_info;
	GthMetadata     *metadata;
	char            *description_utf8;
	char            *formatted_value_utf8;

Paolo Bacchilega's avatar
Paolo Bacchilega committed
253
	if (_g_utf8_all_spaces (formatted_value))
254
		return NULL;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
255 256 257

	attribute = exiv2_key_to_attribute (key);
	description_utf8 = g_locale_to_utf8 (description, -1, NULL, NULL, NULL);
258 259 260 261 262 263 264
	if (attribute_is_date (attribute)) {
		GTimeVal time_;

		if (_g_time_val_from_exif_date (raw_value, &time_))
			formatted_value_utf8 = _g_time_val_strftime (&time_, "%x %X");
		else
			formatted_value_utf8 = g_locale_to_utf8 (formatted_value, -1, NULL, NULL, NULL);
265
		if (formatted_value_utf8 == NULL)
266
			formatted_value_utf8 = g_strdup (INVALID_VALUE);
267
	}
268 269 270 271 272 273 274 275
	else {
		const char *formatted_clean;

		if (strncmp (formatted_value, "lang=", 5) == 0)
			formatted_clean = strchr (formatted_value, ' ') + 1;
		else
			formatted_clean = formatted_value;
		formatted_value_utf8 = g_locale_to_utf8 (formatted_clean, -1, NULL, NULL, NULL);
276
		if (formatted_value_utf8 == NULL)
277
			formatted_value_utf8 = g_strdup (INVALID_VALUE);
278
	}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
279 280 281 282 283 284

	metadata_info = gth_main_get_metadata_info (attribute);
	if ((metadata_info == NULL) && (category != NULL)) {
		GthMetadataInfo info;

		info.id = attribute;
285
		info.type = (type_name != NULL) ? g_strdup (type_name) : NULL;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
286 287 288 289 290 291 292
		info.display_name = description_utf8;
		info.category = category;
		info.sort_order = 500;
		info.flags = GTH_METADATA_ALLOW_IN_PROPERTIES_VIEW;
		metadata_info = gth_main_register_metadata_info (&info);
	}

Paolo Bacchilega's avatar
Paolo Bacchilega committed
293 294 295
	if ((metadata_info != NULL) && (metadata_info->type == NULL) && (type_name != NULL))
		metadata_info->type = g_strdup (type_name);

296
	if ((metadata_info != NULL) && (metadata_info->display_name == NULL) && (description_utf8 != NULL))
Paolo Bacchilega's avatar
Paolo Bacchilega committed
297 298 299
		metadata_info->display_name = g_strdup (description_utf8);

	metadata = gth_metadata_new ();
Paolo Bacchilega's avatar
Paolo Bacchilega committed
300 301 302 303 304 305 306
	g_object_set (metadata,
		      "id", key,
		      "description", description_utf8,
		      "formatted", formatted_value_utf8,
		      "raw", raw_value,
		      "value-type", type_name,
		      NULL);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
307 308 309 310

	g_free (formatted_value_utf8);
	g_free (description_utf8);
	g_free (attribute);
311 312 313 314 315

	return metadata;
}


316
static void
317 318
add_string_list_to_metadata (GthMetadata            *metadata,
			     const Exiv2::Metadatum &value)
319
{
320
	GList         *list;
321 322
	GthStringList *string_list;

323
	list = NULL;
324 325 326 327 328 329 330 331 332 333
	for (int i = 0; i < value.count(); i++)
		list = g_list_prepend (list, g_strdup (value.toString(i).c_str()));
	string_list = gth_string_list_new (g_list_reverse (list));
	g_object_set (metadata, "string-list", string_list, NULL);

	g_object_unref (string_list);
	_g_string_list_free (list);
}


334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383
static void
set_file_info (GFileInfo  *info,
	       const char *key,
	       const char *description,
	       const char *formatted_value,
	       const char *raw_value,
	       const char *category,
	       const char *type_name)
{
	char        *attribute;
	GthMetadata *metadata;

	attribute = exiv2_key_to_attribute (key);
	metadata = create_metadata (key, description, formatted_value, raw_value, category, type_name);
	if (metadata != NULL) {
		g_file_info_set_attribute_object (info, attribute, G_OBJECT (metadata));
		g_object_unref (metadata);
	}

	g_free (attribute);
}


GHashTable *
create_metadata_hash (void)
{
	return g_hash_table_new_full (g_str_hash,
				      g_str_equal,
				      g_free,
				      g_object_unref);
}


static void
add_metadata_to_hash (GHashTable  *table,
		      GthMetadata *metadata)
{
	char     *key;
	gpointer  object;

	if (metadata == NULL)
		return;

	key = exiv2_key_to_attribute (gth_metadata_get_id (metadata));
	object = g_hash_table_lookup (table, key);
	if (object != NULL) {
		GthStringList *string_list;
		GList         *list;

		string_list = NULL;
384 385
		switch (gth_metadata_get_data_type (GTH_METADATA (object))) {
		case GTH_METADATA_TYPE_STRING:
386
			string_list = gth_string_list_new (NULL);
387
			list = g_list_append (NULL, g_strdup (gth_metadata_get_formatted (GTH_METADATA (object))));
388
			gth_string_list_set_list (string_list, list);
389 390 391 392 393
			break;

		case GTH_METADATA_TYPE_STRING_LIST:
			string_list = (GthStringList *) g_object_ref (gth_metadata_get_string_list (GTH_METADATA (object)));
			break;
394 395
		}

396 397 398 399
		if (string_list == NULL) {
			g_hash_table_insert (table,
					     g_strdup (key),
					     g_object_ref (metadata));
400
			return;
401
		}
402

403 404 405 406 407 408 409 410 411 412 413
		switch (gth_metadata_get_data_type (metadata)) {
		case GTH_METADATA_TYPE_STRING:
			list = gth_string_list_get_list (string_list);
			list = g_list_append (list, g_strdup (gth_metadata_get_formatted (metadata)));
			gth_string_list_set_list (string_list, list);
			break;

		case GTH_METADATA_TYPE_STRING_LIST:
			gth_string_list_concat (string_list, gth_metadata_get_string_list (metadata));
			break;
		}
414

415
		g_object_set (metadata, "string-list", string_list, NULL);
416 417
		g_hash_table_replace (table,
				      g_strdup (key),
418
				      g_object_ref (metadata));
419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441

		g_object_unref (string_list);
	}
	else
		g_hash_table_insert (table,
				     g_strdup (key),
				     g_object_ref (metadata));

	g_free (key);
}


static void
set_file_info_from_hash (GFileInfo  *info,
			 GHashTable *table)
{
	GHashTableIter iter;
	gpointer       key;
	gpointer       value;

	g_hash_table_iter_init (&iter, table);
	while (g_hash_table_iter_next (&iter, &key, &value))
		g_file_info_set_attribute_object (info, (char *)key, G_OBJECT (value));
Paolo Bacchilega's avatar
Paolo Bacchilega committed
442 443 444 445
}


static void
446 447 448
set_attribute_from_metadata (GFileInfo  *info,
			     const char *attribute,
			     GObject    *metadata)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
449
{
450 451 452 453
	char *description;
	char *formatted_value;
	char *raw_value;
	char *type_name;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
454 455 456 457 458 459 460 461

	if (metadata == NULL)
		return;

	g_object_get (metadata,
		      "description", &description,
		      "formatted", &formatted_value,
		      "raw", &raw_value,
Paolo Bacchilega's avatar
Paolo Bacchilega committed
462
		      "value-type", &type_name,
Paolo Bacchilega's avatar
Paolo Bacchilega committed
463
		      NULL);
464

Paolo Bacchilega's avatar
Paolo Bacchilega committed
465 466 467 468 469 470 471
	set_file_info (info,
		       attribute,
		       description,
		       formatted_value,
		       raw_value,
		       NULL,
		       type_name);
472 473 474 475 476

	g_free (description);
	g_free (formatted_value);
	g_free (raw_value);
	g_free (type_name);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
477 478 479
}


480 481
static GObject *
get_attribute_from_tagset (GFileInfo  *info,
482 483 484 485 486 487 488 489 490
			   const char *tagset[])
{
	GObject *metadata;
	int      i;

	metadata = NULL;
	for (i = 0; tagset[i] != NULL; i++) {
		metadata = g_file_info_get_attribute_object (info, tagset[i]);
		if (metadata != NULL)
491
			return metadata;
492 493
	}

494 495 496 497 498 499 500 501 502 503 504 505
	return NULL;
}


static void
set_attribute_from_tagset (GFileInfo  *info,
			   const char *attribute,
			   const char *tagset[])
{
	GObject *metadata;

	metadata = get_attribute_from_tagset (info, tagset);
506 507 508 509 510
	if (metadata != NULL)
		set_attribute_from_metadata (info, attribute, metadata);
}


Paolo Bacchilega's avatar
Paolo Bacchilega committed
511
static void
512 513 514
set_string_list_attribute_from_tagset (GFileInfo  *info,
				       const char *attribute,
				       const char *tagset[])
Paolo Bacchilega's avatar
Paolo Bacchilega committed
515
{
516 517
	GObject *metadata;
	int      i;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
518

519 520 521 522 523 524 525 526 527 528
	metadata = NULL;
	for (i = 0; tagset[i] != NULL; i++) {
		metadata = g_file_info_get_attribute_object (info, tagset[i]);
		if (metadata != NULL)
			break;
	}

	if (metadata == NULL)
		return;

529
	if (GTH_IS_METADATA (metadata) && (gth_metadata_get_data_type (GTH_METADATA (metadata)) != GTH_METADATA_TYPE_STRING_LIST)) {
530 531 532
		char           *raw;
		char          **keywords;
		GthStringList  *string_list;
533

534
		g_object_get (metadata, "raw", &raw, NULL);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
535
		keywords = g_strsplit (raw, ",", -1);
536
		string_list = gth_string_list_new_from_strv (keywords);
537 538
		metadata = (GObject *) gth_metadata_new_for_string_list (string_list);
		g_file_info_set_attribute_object (info, attribute, metadata);
539

540 541
		g_object_unref (metadata);
		g_object_unref (string_list);
542 543 544
		g_strfreev (keywords);
		g_free (raw);
	}
545
	else
546
		g_file_info_set_attribute_object (info, attribute, metadata);
547 548
}

549

550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
static void
clear_studip_comments_from_tagset (GFileInfo  *info,
				   const char *tagset[])
{
	int i;

	for (i = 0; tagset[i] != NULL; i++) {
		GObject    *metadata;
		const char *value;
		int         j;

		metadata = g_file_info_get_attribute_object (info, tagset[i]);
		if ((metadata == NULL) || ! GTH_IS_METADATA (metadata))
			continue;

		value = gth_metadata_get_formatted (GTH_METADATA (metadata));
		for (j = 0; stupid_comment_filter[j] != NULL; j++) {
			if (strstr (value, stupid_comment_filter[j]) == value) {
				g_file_info_remove_attribute (info, tagset[i]);
				break;
			}
		}
	}
}


576 577 578
extern "C"
void
exiv2_update_general_attributes (GFileInfo *info)
579
{
580
	set_attribute_from_tagset (info, "general::datetime", _ORIGINAL_DATE_TAG_NAMES);
581
	set_attribute_from_tagset (info, "general::description", _DESCRIPTION_TAG_NAMES);
582
	set_attribute_from_tagset (info, "general::title", _TITLE_TAG_NAMES);
583

584 585
	/* if iptc::caption and iptc::headline are different use iptc::headline
	 * to set general::title, if not already set. */
586 587 588 589 590 591 592 593 594 595 596 597 598

	if (g_file_info_get_attribute_object (info, "general::title") == NULL) {
		GObject *iptc_caption;
		GObject *iptc_headline;

		iptc_caption = g_file_info_get_attribute_object (info, "Iptc::Application2::Caption");
		iptc_headline = g_file_info_get_attribute_object (info, "Iptc::Application2::Headline");

		if ((iptc_caption != NULL)
		    && (iptc_headline != NULL)
		    && (g_strcmp0 (gth_metadata_get_raw (GTH_METADATA (iptc_caption)),
				   gth_metadata_get_raw (GTH_METADATA (iptc_headline))) != 0))
		{
599
			set_attribute_from_metadata (info, "general::title", iptc_headline);
600 601 602
		}
	}

603 604
	set_attribute_from_tagset (info, "general::location", _LOCATION_TAG_NAMES);
	set_string_list_attribute_from_tagset (info, "general::tags", _KEYWORDS_TAG_NAMES);
605
	set_attribute_from_tagset (info, "general::rating", _RATING_TAG_NAMES);
606 607 608
}


609 610 611
#define EXPOSURE_SEPARATOR " · "


612 613 614 615 616 617 618 619 620 621
static void
set_attributes_from_tagsets (GFileInfo *info,
			     gboolean   update_general_attributes)
{
	clear_studip_comments_from_tagset (info, _DESCRIPTION_TAG_NAMES);
	clear_studip_comments_from_tagset (info, _TITLE_TAG_NAMES);

	if (update_general_attributes)
		exiv2_update_general_attributes (info);

622
	set_attribute_from_tagset (info, "Embedded::Photo::DateTimeOriginal", _ORIGINAL_DATE_TAG_NAMES);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
623
	set_attribute_from_tagset (info, "Embedded::Image::Orientation", _ORIENTATION_TAG_NAMES);
624

625 626 627 628 629 630 631 632 633 634
	set_attribute_from_tagset (info, "Embedded::Photo::Aperture", _APERTURE_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::ISOSpeed", _ISOSPEED_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::ExposureTime", _EXPOSURE_TIME_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::ShutterSpeed", _SHUTTER_SPEED_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::FocalLength", _FOCAL_LENGTH_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::Flash", _FLASH_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::CameraModel", _MODEL_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::Author", _AUTHOR_TAG_NAMES);
	set_attribute_from_tagset (info, "Embedded::Photo::Copyright", _COPYRIGHT_TAG_NAMES);

635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
	/* Embedded::Photo::Exposure */

	GObject *aperture;
	GObject *iso_speed;
	GObject *shutter_speed;
	GObject *exposure_time;
	GString *exposure;

	aperture = get_attribute_from_tagset (info, _APERTURE_TAG_NAMES);
	iso_speed = get_attribute_from_tagset (info, _ISOSPEED_TAG_NAMES);
	shutter_speed = get_attribute_from_tagset (info, _SHUTTER_SPEED_TAG_NAMES);
	exposure_time = get_attribute_from_tagset (info, _EXPOSURE_TIME_TAG_NAMES);

	exposure = g_string_new ("");

	if (aperture != NULL) {
		char *formatted_value;

		g_object_get (aperture, "formatted", &formatted_value, NULL);
		if (formatted_value != NULL) {
			g_string_append (exposure, formatted_value);
			g_free (formatted_value);
		}
	}

	if (iso_speed != NULL) {
		char *formatted_value;

		g_object_get (iso_speed, "formatted", &formatted_value, NULL);
		if (formatted_value != NULL) {
			if (exposure->len > 0)
				g_string_append (exposure, EXPOSURE_SEPARATOR);
667
			g_string_append (exposure, "ISO ");
668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704
			g_string_append (exposure, formatted_value);
			g_free (formatted_value);
		}
	}

	if (shutter_speed != NULL) {
		char *formatted_value;

		g_object_get (shutter_speed, "formatted", &formatted_value, NULL);
		if (formatted_value != NULL) {
			if (exposure->len > 0)
				g_string_append (exposure, EXPOSURE_SEPARATOR);
			g_string_append (exposure, formatted_value);
			g_free (formatted_value);
		}
	}
	else if (exposure_time != NULL) {
		char *formatted_value;

		g_object_get (exposure_time, "formatted", &formatted_value, NULL);
		if (formatted_value != NULL) {
			if (exposure->len > 0)
				g_string_append (exposure, EXPOSURE_SEPARATOR);
			g_string_append (exposure, formatted_value);
			g_free (formatted_value);
		}
	}

	set_file_info (info,
		       "Embedded::Photo::Exposure",
		       _("Exposure"),
		       exposure->str,
		       NULL,
		       NULL,
		       NULL);

	g_string_free (exposure, TRUE);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
705 706 707 708 709 710
}


static const char *
get_exif_default_category (const Exiv2::Exifdatum &md)
{
711 712 713
#if EXIV2_TEST_VERSION(0, 21, 0)
	if (Exiv2::ExifTags::isMakerGroup(md.groupName()))
#else
Paolo Bacchilega's avatar
Paolo Bacchilega committed
714
	if (Exiv2::ExifTags::isMakerIfd(md.ifdId()))
715
#endif
Paolo Bacchilega's avatar
Paolo Bacchilega committed
716 717
		return "Exif::MakerNotes";

718
	if (md.groupName().compare("Thumbnail") == 0)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
719
		return "Exif::Thumbnail";
720
	else if (md.groupName().compare("GPSInfo") == 0)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
721
		return "Exif::GPS";
722
	else if (md.groupName().compare("Iop") == 0)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
723 724 725 726 727 728
		return "Exif::Versions";

	return "Exif::Other";
}


729 730
static void
exiv2_read_metadata (Exiv2::Image::AutoPtr  image,
731 732
		     GFileInfo             *info,
		     gboolean               update_general_attributes)
733 734 735 736 737 738 739
{
	image->readMetadata();

	Exiv2::ExifData &exifData = image->exifData();
	if (! exifData.empty()) {
		Exiv2::ExifData::const_iterator end = exifData.end();
		for (Exiv2::ExifData::const_iterator md = exifData.begin(); md != end; ++md) {
Paolo Bacchilega's avatar
Paolo Bacchilega committed
740 741
			stringstream raw_value;
			raw_value << md->value();
742

Paolo Bacchilega's avatar
Paolo Bacchilega committed
743 744 745
			stringstream description;
			if (! md->tagLabel().empty())
				description << md->tagLabel();
746 747 748 749 750
#if EXIV2_TEST_VERSION(0, 21, 0)
			else if (Exiv2::ExifTags::isMakerGroup(md->groupName()))
#else
			else if (Exiv2::ExifTags::isMakerIfd(md->ifdId()))
#endif
751
				// Must be a MakerNote - include group name
Paolo Bacchilega's avatar
Paolo Bacchilega committed
752 753
				description << md->groupName() << "." << md->tagName();
			else
754
				// Normal exif tag - just use tag name
Paolo Bacchilega's avatar
Paolo Bacchilega committed
755
				description << md->tagName();
756 757 758

			set_file_info (info,
				       md->key().c_str(),
Paolo Bacchilega's avatar
Paolo Bacchilega committed
759
				       description.str().c_str(),
760
				       md->print(&exifData).c_str(),
Paolo Bacchilega's avatar
Paolo Bacchilega committed
761
				       raw_value.str().c_str(),
762 763
				       get_exif_default_category (*md),
				       md->typeName());
764 765 766 767 768
		}
	}

	Exiv2::IptcData &iptcData = image->iptcData();
	if (! iptcData.empty()) {
769 770
		GHashTable *table = create_metadata_hash ();

771 772
		Exiv2::IptcData::iterator end = iptcData.end();
		for (Exiv2::IptcData::iterator md = iptcData.begin(); md != end; ++md) {
Paolo Bacchilega's avatar
Paolo Bacchilega committed
773 774
			stringstream raw_value;
			raw_value << md->value();
775

Paolo Bacchilega's avatar
Paolo Bacchilega committed
776 777 778 779 780
			stringstream description;
			if (! md->tagLabel().empty())
				description << md->tagLabel();
			else
				description << md->tagName();
781

782 783 784 785 786 787 788
			GthMetadata *metadata;
			metadata = create_metadata (md->key().c_str(),
						    description.str().c_str(),
						    md->print().c_str(),
						    raw_value.str().c_str(),
						    "Iptc",
						    md->typeName());
789 790 791 792
			if (metadata != NULL) {
				add_metadata_to_hash (table, metadata);
				g_object_unref (metadata);
			}
793
		}
794 795 796

		set_file_info_from_hash (info, table);
		g_hash_table_unref (table);
797 798 799 800
	}

	Exiv2::XmpData &xmpData = image->xmpData();
	if (! xmpData.empty()) {
801 802
		GHashTable *table = create_metadata_hash ();

803 804
		Exiv2::XmpData::iterator end = xmpData.end();
		for (Exiv2::XmpData::iterator md = xmpData.begin(); md != end; ++md) {
Paolo Bacchilega's avatar
Paolo Bacchilega committed
805 806
			stringstream raw_value;
			raw_value << md->value();
807

Paolo Bacchilega's avatar
Paolo Bacchilega committed
808 809 810 811 812
			stringstream description;
			if (! md->tagLabel().empty())
				description << md->tagLabel();
			else
				description << md->groupName() << "." << md->tagName();
813

814 815 816 817 818 819 820
			GthMetadata *metadata;
			metadata = create_metadata (md->key().c_str(),
						    description.str().c_str(),
						    md->print().c_str(),
						    raw_value.str().c_str(),
						    "Xmp::Embedded",
						    md->typeName());
821 822 823 824 825 826
			if (metadata != NULL) {
				if ((g_strcmp0 (md->typeName(), "XmpBag") == 0)
				    || (g_strcmp0 (md->typeName(), "XmpSeq") == 0))
				{
					add_string_list_to_metadata (metadata, *md);
				}
827

828 829
				add_metadata_to_hash (table, metadata);
				g_object_unref (metadata);
830
			}
831
		}
832 833 834

		set_file_info_from_hash (info, table);
		g_hash_table_unref (table);
835 836
	}

837
	set_attributes_from_tagsets (info, update_general_attributes);
838 839 840
}


Paolo Bacchilega's avatar
Paolo Bacchilega committed
841
/*
842
 * exiv2_read_metadata_from_file
Paolo Bacchilega's avatar
Paolo Bacchilega committed
843 844 845 846 847 848
 * reads metadata from image files
 * code relies heavily on example1 from the exiv2 website
 * http://www.exiv2.org/example1.html
 */
extern "C"
gboolean
849 850
exiv2_read_metadata_from_file (GFile         *file,
			       GFileInfo     *info,
851
			       gboolean       update_general_attributes,
852 853
			       GCancellable  *cancellable,
			       GError       **error)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
854 855 856 857 858
{
	try {
		char *path;

		path = g_file_get_path (file);
859 860 861 862 863 864
		if (path == NULL) {
			if (error != NULL)
				*error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED, _("Invalid file format"));
			return FALSE;
		}

Paolo Bacchilega's avatar
Paolo Bacchilega committed
865 866 867 868
		Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(path);
		g_free (path);

		if (image.get() == 0) {
869 870
			if (error != NULL)
				*error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED, _("Invalid file format"));
Paolo Bacchilega's avatar
Paolo Bacchilega committed
871 872
			return FALSE;
		}
873 874
		// Set the log level to only show errors (and suppress warnings, informational and debug messages)
		Exiv2::LogMsg::setLevel(Exiv2::LogMsg::error);
875
		exiv2_read_metadata (image, info, update_general_attributes);
876
	}
877
	catch (Exiv2::AnyError& e) {
878
		if (error != NULL)
879
			*error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED, e.what());
880 881
		return FALSE;
	}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
882

883 884
	return TRUE;
}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
885 886


887 888 889 890 891
extern "C"
gboolean
exiv2_read_metadata_from_buffer (void       *buffer,
				 gsize       buffer_size,
				 GFileInfo  *info,
892
				 gboolean    update_general_attributes,
893 894 895 896
				 GError    **error)
{
	try {
		Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open ((Exiv2::byte*) buffer, buffer_size);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
897

898 899 900 901
		if (image.get() == 0) {
			if (error != NULL)
				*error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED, _("Invalid file format"));
			return FALSE;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
902 903
		}

904
		exiv2_read_metadata (image, info, update_general_attributes);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
905
	}
906
	catch (Exiv2::AnyError& e) {
907
		if (error != NULL)
908
			*error = g_error_new_literal (G_IO_ERROR, G_IO_ERROR_FAILED, e.what());
Paolo Bacchilega's avatar
Paolo Bacchilega committed
909 910 911 912 913 914 915
		return FALSE;
	}

	return TRUE;
}


916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937
extern "C"
GFile *
exiv2_get_sidecar (GFile *file)
{
	char  *uri;
	char  *uri_wo_ext;
	char  *sidecar_uri;
	GFile *sidecar;

	uri = g_file_get_uri (file);
	uri_wo_ext = _g_uri_remove_extension (uri);
	sidecar_uri = g_strconcat (uri_wo_ext, ".xmp", NULL);
	sidecar = g_file_new_for_uri (sidecar_uri);

	g_free (sidecar_uri);
	g_free (uri_wo_ext);
	g_free (uri);

	return sidecar;
}


Paolo Bacchilega's avatar
Paolo Bacchilega committed
938 939 940
extern "C"
gboolean
exiv2_read_sidecar (GFile     *file,
941 942
		    GFileInfo *info,
		    gboolean   update_general_attributes)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
943 944 945 946 947
{
	try {
		char *path;

		path = g_file_get_path (file);
948 949 950
		if (path == NULL)
			return FALSE;

Paolo Bacchilega's avatar
Paolo Bacchilega committed
951 952 953 954 955 956 957 958 959 960 961
		Exiv2::DataBuf buf = Exiv2::readFile(path);
		g_free (path);

		std::string xmpPacket;
		xmpPacket.assign(reinterpret_cast<char*>(buf.pData_), buf.size_);
		Exiv2::XmpData xmpData;

		if (0 != Exiv2::XmpParser::decode(xmpData, xmpPacket))
			return FALSE;

		if (! xmpData.empty()) {
962 963
			GHashTable *table = create_metadata_hash ();

Paolo Bacchilega's avatar
Paolo Bacchilega committed
964 965
			Exiv2::XmpData::iterator end = xmpData.end();
			for (Exiv2::XmpData::iterator md = xmpData.begin(); md != end; ++md) {
Paolo Bacchilega's avatar
Paolo Bacchilega committed
966 967
				stringstream raw_value;
				raw_value << md->value();
Paolo Bacchilega's avatar
Paolo Bacchilega committed
968

Paolo Bacchilega's avatar
Paolo Bacchilega committed
969 970 971 972 973
				stringstream description;
				if (! md->tagLabel().empty())
					description << md->tagLabel();
				else
					description << md->groupName() << "." << md->tagName();
Paolo Bacchilega's avatar
Paolo Bacchilega committed
974

975 976 977 978 979 980 981
				GthMetadata *metadata;
				metadata = create_metadata (md->key().c_str(),
							    description.str().c_str(),
							    md->print().c_str(),
							    raw_value.str().c_str(),
							    "Xmp::Sidecar",
							    md->typeName());
982 983 984 985 986 987 988 989 990
				if (metadata != NULL) {
					if ((g_strcmp0 (md->typeName(), "XmpBag") == 0)
					    || (g_strcmp0 (md->typeName(), "XmpSeq") == 0))
					{
						add_string_list_to_metadata (metadata, *md);
					}

					add_metadata_to_hash (table, metadata);
					g_object_unref (metadata);
991
				}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
992
			}
993 994 995

			set_file_info_from_hash (info, table);
			g_hash_table_unref (table);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
996 997 998
		}
		Exiv2::XmpParser::terminate();

999
		set_attributes_from_tagsets (info, update_general_attributes);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1000 1001
	}
	catch (Exiv2::AnyError& e) {
1002
		std::cerr << "Caught Exiv2 exception '" << e << "'\n";
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031
		return FALSE;
	}

	return TRUE;
}


static void
mandatory_int (Exiv2::ExifData &checkdata,
	       const char      *tag,
	       int              value)
{
	Exiv2::ExifKey key = Exiv2::ExifKey(tag);
	if (checkdata.findKey(key) == checkdata.end())
		checkdata[tag] = value;
}


static void
mandatory_string (Exiv2::ExifData &checkdata,
		  const char      *tag,
		  const char      *value)
{
	Exiv2::ExifKey key = Exiv2::ExifKey(tag);
	if (checkdata.findKey(key) == checkdata.end())
		checkdata[tag] = value;
}


Paolo Bacchilega's avatar
Paolo Bacchilega committed
1032
const char *
1033 1034
gth_main_get_metadata_type (gpointer    metadata,
			    const char *attribute)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1035
{
1036
	const char      *value_type = NULL;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1037 1038
	GthMetadataInfo *metadatum_info;

1039 1040
	if (GTH_IS_METADATA (metadata)) {
		value_type = gth_metadata_get_value_type (GTH_METADATA (metadata));
1041
		if ((g_strcmp0 (value_type, "Undefined") == 0) || (g_strcmp0 (value_type, "") == 0))
1042
			value_type = NULL;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1043

1044 1045 1046
		if (value_type != NULL)
			return value_type;
	}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1047

1048
	metadatum_info = gth_main_get_metadata_info (attribute);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1049 1050 1051 1052 1053 1054 1055
	if (metadatum_info != NULL)
		value_type = metadatum_info->type;

	return value_type;
}


1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089
static void
dump_exif_data (Exiv2::ExifData &exifData,
		const char      *prefix)
{
	std::cout << prefix << "\n";

	try {
		if (exifData.empty()) {
			throw Exiv2::Error(1, " No Exif data found in the file");
		}
		Exiv2::ExifData::const_iterator end = exifData.end();
		for (Exiv2::ExifData::const_iterator i = exifData.begin(); i != end; ++i) {
			const char* tn = i->typeName();
			std::cout << std::setw(44) << std::setfill(' ') << std::left
				  << i->key() << " "
				  << "0x" << std::setw(4) << std::setfill('0') << std::right
				  << std::hex << i->tag() << " "
				  << std::setw(9) << std::setfill(' ') << std::left
				  << (tn ? tn : "Unknown") << " "
				  << std::dec << std::setw(3)
				  << std::setfill(' ') << std::right
				  << i->count() << "  "
				  << std::dec << i->value()
				  << "\n";
		}
		std::cout << "\n";
	}
	catch (Exiv2::Error& e) {
	    std::cout << "Caught Exiv2 exception '" << e.what() << "'\n";
	    return;
	}
}


1090 1091 1092
static Exiv2::DataBuf
exiv2_write_metadata_private (Exiv2::Image::AutoPtr  image,
			      GFileInfo             *info,
1093
			      GthImage              *image_data)
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1094
{
1095 1096 1097
	static char  *software_name = NULL;
	char        **attributes;
	int           i;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1098

1099
	image->clearMetadata();
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1100

1101
	// EXIF Data
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1102

1103
	Exiv2::ExifData ed;
1104 1105 1106 1107
	attributes = g_file_info_list_attributes (info, "Exif");
	for (i = 0; attributes[i] != NULL; i++) {
		GthMetadata *metadatum;
		char *key;
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1108

1109 1110
		metadatum = (GthMetadata *) g_file_info_get_attribute_object (info, attributes[i]);
		key = exiv2_key_from_attribute (attributes[i]);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1111

1112
		try {
1113 1114 1115
			/* If the metadatum has no value yet, a new empty value
			 * is created. The type is taken from Exiv2's tag
			 * lookup tables. If the tag is not found in the table,
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1116 1117
			 * the type defaults to ASCII.
			 * We always create the metadatum explicitly if the
1118 1119
			 * type is available to avoid type errors.
			 * See bug #610389 for more details.  The original
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1120
			 * explanation is here:
1121 1122 1123
			 * http://uk.groups.yahoo.com/group/exiv2/message/1472
			 */

Paolo Bacchilega's avatar
Paolo Bacchilega committed
1124
			const char *raw_value = gth_metadata_get_raw (metadatum);
1125
			const char *value_type = gth_main_get_metadata_type (metadatum, attributes[i]);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1126

1127
			if ((raw_value != NULL) && (strcmp (raw_value, "") != 0) && (value_type != NULL)) {
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1128 1129
				Exiv2::Value::AutoPtr value = Exiv2::Value::create (Exiv2::TypeInfo::typeId (value_type));
				value->read (raw_value);
1130 1131 1132
				Exiv2::ExifKey exif_key(key);
				ed.add (exif_key, value.get());
			}
1133
		}
1134
		catch (Exiv2::AnyError& e) {
1135
			/* we don't care about invalid key errors */
1136
			g_warning ("%s", e.what());
1137
		}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1138

1139 1140 1141
		g_free (key);
	}
	g_strfreev (attributes);
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1142

1143
	// Mandatory tags - add if not already present
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1144

1145 1146 1147 1148 1149 1150 1151 1152
	mandatory_int (ed, "Exif.Image.XResolution", 72);
	mandatory_int (ed, "Exif.Image.YResolution", 72);
	mandatory_int (ed, "Exif.Image.ResolutionUnit", 2);
	mandatory_int (ed, "Exif.Image.YCbCrPositioning", 1);
	mandatory_int (ed, "Exif.Photo.ColorSpace", 1);
	mandatory_string (ed, "Exif.Photo.ExifVersion", "48 50 50 49");
	mandatory_string (ed, "Exif.Photo.ComponentsConfiguration", "1 2 3 0");
	mandatory_string (ed, "Exif.Photo.FlashpixVersion", "48 49 48 48");
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1153

1154
	// Overwrite the software tag if the image content was modified
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1155

1156 1157 1158
	if (g_file_info_get_attribute_boolean (info, "gth::file::image-changed")) {
		if (software_name == NULL)
			software_name = g_strconcat (g_get_application_name (), " ", VERSION, NULL);
1159
		ed["Exif.Image.ProcessingSoftware"] = software_name;
1160
	}
Paolo Bacchilega's avatar
Paolo Bacchilega committed
1161

1162
	// Update the dimension tags with actual im