2 * Copyright (C) 2008 - 2016 The Geeqie Team
4 * Author: Vladimir Nadvornik
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.
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.
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.
37 #include <exiv2/exiv2.hpp>
45 #include "filefilter.h"
49 #include "ui-fileops.h"
53 #if EXIV2_TEST_VERSION(0,27,0)
54 #define HAVE_EXIV2_ERROR_CODE
57 #if EXIV2_TEST_VERSION(0,27,0)
58 #define EXV_PACKAGE "exiv2"
61 #if EXIV2_TEST_VERSION(0,28,0)
62 #define AnyError Error
63 #define AutoPtr UniquePtr
69 const gchar *exif_key;
70 const gchar *iptc_key;
73 /* this is a list of keys that should be converted, even with the older Exiv2 which does not support it directly */
74 static constexpr AltKey alt_keys[] = {
75 {"Xmp.tiff.Orientation", "Exif.Image.Orientation", nullptr},
76 {"Xmp.dc.title", nullptr, "Iptc.Application2.ObjectName" },
77 {"Xmp.photoshop.Urgency", nullptr, "Iptc.Application2.Urgency" },
78 {"Xmp.photoshop.Category", nullptr, "Iptc.Application2.Category" },
79 {"Xmp.photoshop.SupplementalCategory", nullptr, "Iptc.Application2.SuppCategory" },
80 {"Xmp.dc.subject", nullptr, "Iptc.Application2.Keywords" },
81 {"Xmp.iptc.Location", nullptr, "Iptc.Application2.LocationName" },
82 {"Xmp.photoshop.Instruction", nullptr, "Iptc.Application2.SpecialInstructions" },
83 {"Xmp.photoshop.DateCreated", nullptr, "Iptc.Application2.DateCreated" },
84 {"Xmp.dc.creator", nullptr, "Iptc.Application2.Byline" },
85 {"Xmp.photoshop.AuthorsPosition", nullptr, "Iptc.Application2.BylineTitle" },
86 {"Xmp.photoshop.City", nullptr, "Iptc.Application2.City" },
87 {"Xmp.photoshop.State", nullptr, "Iptc.Application2.ProvinceState" },
88 {"Xmp.iptc.CountryCode", nullptr, "Iptc.Application2.CountryCode" },
89 {"Xmp.photoshop.Country", nullptr, "Iptc.Application2.CountryName" },
90 {"Xmp.photoshop.TransmissionReference", nullptr, "Iptc.Application2.TransmissionReference"},
91 {"Xmp.photoshop.Headline", nullptr, "Iptc.Application2.Headline" },
92 {"Xmp.photoshop.Credit", nullptr, "Iptc.Application2.Credit" },
93 {"Xmp.photoshop.Source", nullptr, "Iptc.Application2.Source" },
94 {"Xmp.dc.rights", nullptr, "Iptc.Application2.Copyright" },
95 {"Xmp.dc.description", nullptr, "Iptc.Application2.Caption" },
96 {"Xmp.photoshop.CaptionWriter", nullptr, "Iptc.Application2.Writer" },
99 static void _debug_exception(const char* file,
104 gchar *str = g_locale_from_utf8(e.what(), -1, nullptr, nullptr, nullptr);
105 DEBUG_1("%s:%d:%s:Exiv2: %s", file, line, func, str);
109 #define debug_exception(e) _debug_exception(__FILE__, __LINE__, __func__, e)
113 Exiv2::ExifData::const_iterator exifIter; /* for exif_get_next_item */
114 Exiv2::IptcData::const_iterator iptcIter; /* for exif_get_next_item */
115 Exiv2::XmpData::const_iterator xmpIter; /* for exif_get_next_item */
117 virtual ~ExifData() = default;
119 virtual void writeMetadata(gchar * = nullptr)
121 g_critical("Unsupported method of writing metadata");
124 virtual ExifData *original()
129 virtual Exiv2::Image *image() = 0;
131 virtual Exiv2::ExifData &exifData() = 0;
133 virtual Exiv2::IptcData &iptcData() = 0;
135 virtual Exiv2::XmpData &xmpData() = 0;
137 virtual void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length) = 0;
139 virtual guchar *get_jpeg_color_profile(guint *data_len) = 0;
141 virtual std::string image_comment() const = 0;
143 virtual void set_image_comment(const std::string& comment) = 0;
146 // This allows read-only access to the original metadata
147 struct ExifDataOriginal : public ExifData
150 Exiv2::Image::AutoPtr image_;
152 /* the icc profile in jpeg is not technically exif - store it here */
153 unsigned char *cp_data_;
158 Exiv2::ExifData emptyExifData_;
159 Exiv2::IptcData emptyIptcData_;
160 Exiv2::XmpData emptyXmpData_;
163 ExifDataOriginal(Exiv2::Image::AutoPtr image)
167 image_ = std::move(image);
171 ExifDataOriginal(gchar *path)
177 pathl_ = path_from_utf8(path);
180 image_ = Exiv2::ImageFactory::open(pathl_);
181 image_->readMetadata();
183 if (image_->mimeType() == "application/rdf+xml")
185 //Exiv2 sidecar converts xmp to exif and iptc, we don't want it.
186 image_->clearExifData();
187 image_->clearIptcData();
190 if (image_->mimeType() == "image/jpeg")
192 /* try to get jpeg color profile */
193 Exiv2::BasicIo &io = image_->io();
194 gint open = io.isopen();
195 if (!open) io.open();
198 auto mapped = static_cast<unsigned char*>(io.mmap());
199 if (mapped) exif_jpeg_parse_color(this, mapped, io.size());
202 if (!open) io.close();
205 catch (Exiv2::AnyError& e)
211 ~ExifDataOriginal() override
213 if (cp_data_) g_free(cp_data_);
214 if (pathl_) g_free(pathl_);
217 Exiv2::Image *image() override
219 if (!valid_) return nullptr;
223 Exiv2::ExifData &exifData () override
225 if (!valid_) return emptyExifData_;
226 return image_->exifData();
229 Exiv2::IptcData &iptcData () override
231 if (!valid_) return emptyIptcData_;
232 return image_->iptcData();
235 Exiv2::XmpData &xmpData () override
237 if (!valid_) return emptyXmpData_;
238 return image_->xmpData();
241 void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length) override
243 if (cp_data_) g_free(cp_data_);
245 cp_length_ = cp_length;
248 guchar *get_jpeg_color_profile(guint *data_len) override
252 if (data_len) *data_len = cp_length_;
253 #if GLIB_CHECK_VERSION(2,68,0)
254 return static_cast<unsigned char *>(g_memdup2(cp_data_, cp_length_));
256 return static_cast<unsigned char *>(g_memdup(cp_data_, cp_length_));
262 std::string image_comment() const override
264 return image_.get() ? image_->comment() : "";
267 void set_image_comment(const std::string& comment) override
270 image_->setComment(comment);
274 static void _ExifDataProcessed_update_xmp(gpointer key, gpointer value, gpointer data);
276 // This allows read-write access to the metadata
277 struct ExifDataProcessed : public ExifData
280 std::unique_ptr<ExifDataOriginal> imageData_;
281 std::unique_ptr<ExifDataOriginal> sidecarData_;
283 Exiv2::ExifData exifData_;
284 Exiv2::IptcData iptcData_;
285 Exiv2::XmpData xmpData_;
288 ExifDataProcessed(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp)
290 imageData_ = std::make_unique<ExifDataOriginal>(path);
291 sidecarData_ = nullptr;
294 sidecarData_ = std::make_unique<ExifDataOriginal>(sidecar_path);
295 xmpData_ = sidecarData_->xmpData();
299 xmpData_ = imageData_->xmpData();
302 exifData_ = imageData_->exifData();
303 iptcData_ = imageData_->iptcData();
306 syncExifWithXmp(exifData_, xmpData_);
310 DEBUG_1("Exiv2: Catching bug\n");
314 g_hash_table_foreach(modified_xmp, _ExifDataProcessed_update_xmp, this);
318 ExifData *original() override
320 return imageData_.get();
323 void writeMetadata(gchar *path = nullptr) override
327 if (options->metadata.save_legacy_IPTC)
328 copyXmpToIptc(xmpData_, iptcData_);
332 copyXmpToExif(xmpData_, exifData_);
333 Exiv2::Image *image = imageData_->image();
336 #ifdef HAVE_EXIV2_ERROR_CODE
337 # if EXIV2_TEST_VERSION(0,28,0)
338 throw Exiv2::Error(Exiv2::ErrorCode::kerInputDataReadFailed);
340 throw Exiv2::Error(Exiv2::kerInputDataReadFailed);
343 throw Exiv2::Error(21);
345 image->setExifData(exifData_);
346 image->setIptcData(iptcData_);
347 image->setXmpData(xmpData_);
348 image->writeMetadata();
352 gchar *pathl = path_from_utf8(path);;
354 auto sidecar = Exiv2::ImageFactory::create(Exiv2::ImageType::xmp, pathl);
358 sidecar->setXmpData(xmpData_);
359 sidecar->writeMetadata();
363 Exiv2::Image *image() override
365 return imageData_->image();
368 Exiv2::ExifData &exifData () override
373 Exiv2::IptcData &iptcData () override
378 Exiv2::XmpData &xmpData () override
383 void add_jpeg_color_profile(unsigned char *cp_data, guint cp_length) override
385 imageData_->add_jpeg_color_profile(cp_data, cp_length);
388 guchar *get_jpeg_color_profile(guint *data_len) override
390 return imageData_->get_jpeg_color_profile(data_len);
393 std::string image_comment() const override
395 return imageData_->image_comment();
398 void set_image_comment(const std::string& comment) override
400 imageData_->set_image_comment(comment);
411 #ifdef EXV_ENABLE_NLS
412 bind_textdomain_codeset (EXV_PACKAGE, "UTF-8");
415 #ifdef EXV_ENABLE_BMFF
416 Exiv2::enableBMFF(TRUE);
422 static void _ExifDataProcessed_update_xmp(gpointer key, gpointer value, gpointer data)
424 exif_update_metadata(static_cast<ExifData *>(data), static_cast<gchar *>(key), static_cast<GList *>(value));
427 ExifData *exif_read(gchar *path, gchar *sidecar_path, GHashTable *modified_xmp)
429 DEBUG_1("exif read %s, sidecar: %s", path, sidecar_path ? sidecar_path : "-");
431 return new ExifDataProcessed(path, sidecar_path, modified_xmp);
433 catch (Exiv2::AnyError& e) {
440 gboolean exif_write(ExifData *exif)
443 exif->writeMetadata();
446 catch (Exiv2::AnyError& e) {
452 gboolean exif_write_sidecar(ExifData *exif, gchar *path)
455 exif->writeMetadata(path);
458 catch (Exiv2::AnyError& e) {
466 void exif_free(ExifData *exif)
469 g_assert(dynamic_cast<ExifDataProcessed *>(exif)); // this should not be called on ExifDataOriginal
473 ExifData *exif_get_original(ExifData *exif)
475 return exif->original();
479 ExifItem *exif_get_item(ExifData *exif, const gchar *key)
482 Exiv2::Metadatum *item = nullptr;
484 Exiv2::ExifKey ekey(key);
485 auto pos = exif->exifData().findKey(ekey);
486 if (pos == exif->exifData().end()) return nullptr;
489 catch (Exiv2::AnyError& e) {
491 Exiv2::IptcKey ekey(key);
492 auto pos = exif->iptcData().findKey(ekey);
493 if (pos == exif->iptcData().end()) return nullptr;
496 catch (Exiv2::AnyError& e) {
497 Exiv2::XmpKey ekey(key);
498 auto pos = exif->xmpData().findKey(ekey);
499 if (pos == exif->xmpData().end()) return nullptr;
503 return reinterpret_cast<ExifItem *>(item);
505 catch (Exiv2::AnyError& e) {
511 ExifItem *exif_add_item(ExifData *exif, const gchar *key)
514 Exiv2::Metadatum *item = nullptr;
516 Exiv2::ExifKey ekey(key);
517 exif->exifData().add(ekey, nullptr);
518 auto pos = exif->exifData().end(); // a hack, there should be a better way to get the currently added item
522 catch (Exiv2::AnyError& e) {
524 Exiv2::IptcKey ekey(key);
525 exif->iptcData().add(ekey, nullptr);
526 auto pos = exif->iptcData().end();
530 catch (Exiv2::AnyError& e) {
531 Exiv2::XmpKey ekey(key);
532 exif->xmpData().add(ekey, nullptr);
533 auto pos = exif->xmpData().end();
538 return reinterpret_cast<ExifItem *>(item);
540 catch (Exiv2::AnyError& e) {
547 ExifItem *exif_get_first_item(ExifData *exif)
550 exif->exifIter = exif->exifData().begin();
551 exif->iptcIter = exif->iptcData().begin();
552 exif->xmpIter = exif->xmpData().begin();
553 if (exif->exifIter != exif->exifData().end())
555 const Exiv2::Metadatum *item = &*exif->exifIter;
557 return (ExifItem *)item;
559 if (exif->iptcIter != exif->iptcData().end())
561 const Exiv2::Metadatum *item = &*exif->iptcIter;
563 return (ExifItem *)item;
565 if (exif->xmpIter != exif->xmpData().end())
567 const Exiv2::Metadatum *item = &*exif->xmpIter;
569 return (ExifItem *)item;
574 catch (Exiv2::AnyError& e) {
580 ExifItem *exif_get_next_item(ExifData *exif)
583 if (exif->exifIter != exif->exifData().end())
585 const Exiv2::Metadatum *item = &*exif->exifIter;
587 return (ExifItem *)item;
589 if (exif->iptcIter != exif->iptcData().end())
591 const Exiv2::Metadatum *item = &*exif->iptcIter;
593 return (ExifItem *)item;
595 if (exif->xmpIter != exif->xmpData().end())
597 const Exiv2::Metadatum *item = &*exif->xmpIter;
599 return (ExifItem *)item;
603 catch (Exiv2::AnyError& e) {
609 char *exif_item_get_tag_name(ExifItem *item)
612 if (!item) return nullptr;
613 return g_strdup((reinterpret_cast<Exiv2::Metadatum *>(item))->key().c_str());
615 catch (Exiv2::AnyError& e) {
621 guint exif_item_get_tag_id(ExifItem *item)
625 return (reinterpret_cast<Exiv2::Metadatum *>(item))->tag();
627 catch (Exiv2::AnyError& e) {
633 guint exif_item_get_elements(ExifItem *item)
637 return (reinterpret_cast<Exiv2::Metadatum *>(item))->count();
639 catch (Exiv2::AnyError& e) {
645 char *exif_item_get_data(ExifItem *item, guint *data_len)
648 if (!item) return nullptr;
649 auto md = reinterpret_cast<Exiv2::Metadatum *>(item);
650 if (data_len) *data_len = md->size();
651 auto data = static_cast<char *>(g_malloc(md->size()));
652 auto res = md->copy(reinterpret_cast<Exiv2::byte *>(data), Exiv2::littleEndian /* should not matter */);
653 g_assert(res == md->size());
656 catch (Exiv2::AnyError& e) {
662 char *exif_item_get_description(ExifItem *item)
665 if (!item) return nullptr;
666 return utf8_validate_or_convert((reinterpret_cast<Exiv2::Metadatum *>(item))->tagLabel().c_str());
668 catch (std::exception& e) {
674 invalidTypeId, unsignedByte, asciiString, unsignedShort,
675 unsignedLong, unsignedRational, signedByte, undefined,
676 signedShort, signedLong, signedRational, string,
677 date, time, comment, directory,
678 xmpText, xmpAlt, xmpBag, xmpSeq,
682 static guint format_id_trans_tbl [] = {
684 EXIF_FORMAT_BYTE_UNSIGNED,
686 EXIF_FORMAT_SHORT_UNSIGNED,
687 EXIF_FORMAT_LONG_UNSIGNED,
688 EXIF_FORMAT_RATIONAL_UNSIGNED,
690 EXIF_FORMAT_UNDEFINED,
693 EXIF_FORMAT_RATIONAL,
697 EXIF_FORMAT_UNDEFINED,
706 guint exif_item_get_format_id(ExifItem *item)
709 if (!item) return EXIF_FORMAT_UNKNOWN;
710 guint id = (reinterpret_cast<Exiv2::Metadatum *>(item))->typeId();
711 if (id >= (sizeof(format_id_trans_tbl) / sizeof(format_id_trans_tbl[0])) ) return EXIF_FORMAT_UNKNOWN;
712 return format_id_trans_tbl[id];
714 catch (Exiv2::AnyError& e) {
716 return EXIF_FORMAT_UNKNOWN;
720 const char *exif_item_get_format_name(ExifItem *item, gboolean)
723 if (!item) return nullptr;
724 return (reinterpret_cast<Exiv2::Metadatum *>(item))->typeName();
726 catch (Exiv2::AnyError& e) {
733 gchar *exif_item_get_data_as_text(ExifItem *item, ExifData *exif)
736 if (!item) return nullptr;
737 auto metadatum = reinterpret_cast<Exiv2::Metadatum *>(item);
738 return utf8_validate_or_convert(metadatum->print(&exif->exifData()).c_str());
740 catch (Exiv2::AnyError& e) {
745 gchar *exif_item_get_string(ExifItem *item, int idx)
748 if (!item) return nullptr;
749 auto em = reinterpret_cast<Exiv2::Metadatum *>(item);
750 std::string str = em->toString(idx);
751 if (idx == 0 && str.empty()) str = em->toString();
752 if (str.length() > 5 && str.substr(0, 5) == "lang=")
754 std::string::size_type pos = str.find_first_of(' ');
755 if (pos != std::string::npos) str = str.substr(pos+1);
758 return utf8_validate_or_convert(str.c_str());
760 catch (Exiv2::AnyError& e) {
766 gint exif_item_get_integer(ExifItem *item, gint *value)
769 if (!item || exif_item_get_elements(item) == 0) return 0;
771 #if EXIV2_TEST_VERSION(0,28,0)
772 *value = ((Exiv2::Metadatum *)item)->toInt64();
774 *value = (reinterpret_cast<Exiv2::Metadatum *>(item))->toLong();
778 catch (Exiv2::AnyError& e) {
784 ExifRational *exif_item_get_rational(ExifItem *item, gint *sign, guint n)
787 if (!item) return nullptr;
788 if (n >= exif_item_get_elements(item)) return nullptr;
789 Exiv2::Rational v = (reinterpret_cast<Exiv2::Metadatum *>(item))->toRational(n);
790 static ExifRational ret;
793 if (sign) *sign = ((reinterpret_cast<Exiv2::Metadatum *>(item))->typeId() == Exiv2::signedRational);
796 catch (Exiv2::AnyError& e) {
802 gchar *exif_get_tag_description_by_key(const gchar *key)
805 Exiv2::ExifKey ekey(key);
806 return utf8_validate_or_convert(ekey.tagLabel().c_str());
808 catch (Exiv2::AnyError& e) {
810 Exiv2::IptcKey ikey(key);
811 return utf8_validate_or_convert(ikey.tagLabel().c_str());
813 catch (Exiv2::AnyError& e) {
815 Exiv2::XmpKey xkey(key);
816 return utf8_validate_or_convert(xkey.tagLabel().c_str());
818 catch (Exiv2::AnyError& e) {
827 static const AltKey *find_alt_key(const gchar *xmp_key)
829 for (const auto& k : alt_keys)
830 if (strcmp(xmp_key, k.xmp_key) == 0) return &k;
834 static gint exif_update_metadata_simple(ExifData *exif, const gchar *key, const GList *values)
837 const GList *work = values;
840 Exiv2::ExifKey ekey(key);
842 auto pos = exif->exifData().findKey(ekey);
843 while (pos != exif->exifData().end())
845 exif->exifData().erase(pos);
846 pos = exif->exifData().findKey(ekey);
851 exif->exifData()[key] = static_cast<gchar *>(work->data);
855 catch (Exiv2::AnyError& e) {
858 Exiv2::IptcKey ekey(key);
859 auto pos = exif->iptcData().findKey(ekey);
860 while (pos != exif->iptcData().end())
862 exif->iptcData().erase(pos);
863 pos = exif->iptcData().findKey(ekey);
868 exif->iptcData()[key] = static_cast<gchar *>(work->data);
872 catch (Exiv2::AnyError& e) {
873 Exiv2::XmpKey ekey(key);
874 auto pos = exif->xmpData().findKey(ekey);
875 while (pos != exif->xmpData().end())
877 exif->xmpData().erase(pos);
878 pos = exif->xmpData().findKey(ekey);
883 exif->xmpData()[key] = static_cast<gchar *>(work->data);
890 catch (Exiv2::AnyError& e) {
896 gint exif_update_metadata(ExifData *exif, const gchar *key, const GList *values)
898 gint ret = exif_update_metadata_simple(exif, key, values);
901 !values || /* deleting item */
902 !ret /* writing to the explicitly given xmp tag failed */
905 /* deleted xmp metadatum can't be converted, we have to delete also the corresponding legacy tag */
906 /* if we can't write xmp, update at least the legacy tag */
907 const AltKey *alt_key = find_alt_key(key);
908 if (alt_key && alt_key->iptc_key)
909 ret = exif_update_metadata_simple(exif, alt_key->iptc_key, values);
911 if (alt_key && alt_key->exif_key)
912 ret = exif_update_metadata_simple(exif, alt_key->exif_key, values);
918 static GList *exif_add_value_to_glist(GList *list, Exiv2::Metadatum &item, MetadataFormat format, const Exiv2::ExifData *metadata)
920 Exiv2::TypeId id = item.typeId();
921 if (format == METADATA_FORMATTED ||
922 id == Exiv2::asciiString ||
923 id == Exiv2::undefined ||
924 id == Exiv2::string ||
927 id == Exiv2::xmpText ||
928 id == Exiv2::langAlt ||
932 /* read as a single entry */
935 if (format == METADATA_FORMATTED)
937 str = item.print(metadata);
938 if (str.length() > 1024)
940 /* truncate very long strings, they cause problems in gui */
947 str = item.toString();
949 if (str.length() > 5 && str.substr(0, 5) == "lang=")
951 std::string::size_type pos = str.find_first_of(' ');
952 if (pos != std::string::npos) str = str.substr(pos+1);
954 list = g_list_append(list, utf8_validate_or_convert(str.c_str()));
959 #if EXIV2_TEST_VERSION(0,28,0)
964 for (i = 0; i < item.count(); i++)
965 list = g_list_append(list, utf8_validate_or_convert(item.toString(i).c_str()));
970 static GList *exif_get_metadata_simple(ExifData *exif, const gchar *key, MetadataFormat format)
972 GList *list = nullptr;
975 Exiv2::ExifKey ekey(key);
976 auto pos = exif->exifData().findKey(ekey);
977 if (pos != exif->exifData().end())
978 list = exif_add_value_to_glist(list, *pos, format, &exif->exifData());
981 catch (Exiv2::AnyError& e) {
983 Exiv2::IptcKey ekey(key);
984 auto pos = exif->iptcData().begin();
985 while (pos != exif->iptcData().end())
987 if (pos->key() == key)
988 list = exif_add_value_to_glist(list, *pos, format, nullptr);
993 catch (Exiv2::AnyError& e) {
994 Exiv2::XmpKey ekey(key);
995 auto pos = exif->xmpData().findKey(ekey);
996 if (pos != exif->xmpData().end())
997 list = exif_add_value_to_glist(list, *pos, format, nullptr);
1001 catch (Exiv2::AnyError& e) {
1007 GList *exif_get_metadata(ExifData *exif, const gchar *key, MetadataFormat format)
1009 GList *list = nullptr;
1011 if (!key) return nullptr;
1013 if (format == METADATA_FORMATTED)
1017 text = exif_get_formatted_by_key(exif, key, &key_valid);
1018 if (key_valid) return g_list_append(nullptr, text);
1021 list = exif_get_metadata_simple(exif, key, format);
1023 /* the following code can be ifdefed out as soon as Exiv2 supports it */
1026 const AltKey *alt_key = find_alt_key(key);
1027 if (alt_key && alt_key->iptc_key)
1028 list = exif_get_metadata_simple(exif, alt_key->iptc_key, format);
1034 void exif_add_jpeg_color_profile(ExifData *exif, unsigned char *cp_data, guint cp_length)
1036 exif->add_jpeg_color_profile(cp_data, cp_length);
1039 guchar *exif_get_color_profile(ExifData *exif, guint *data_len)
1041 guchar *ret = exif->get_jpeg_color_profile(data_len);
1042 if (ret) return ret;
1044 ExifItem *prof_item = exif_get_item(exif, "Exif.Image.InterColorProfile");
1045 if (prof_item && exif_item_get_format_id(prof_item) == EXIF_FORMAT_UNDEFINED)
1046 ret = reinterpret_cast<guchar *>(exif_item_get_data(prof_item, data_len));
1050 gchar* exif_get_image_comment(FileData* fd)
1052 if (!fd || !fd->exif)
1053 return g_strdup("");
1055 return g_strdup(fd->exif->image_comment().c_str());
1058 void exif_set_image_comment(FileData* fd, const gchar* comment)
1060 if (!fd || !fd->exif)
1063 fd->exif->set_image_comment(comment ? comment : "");
1067 guchar *exif_get_preview(ExifData *exif, guint *data_len, gint requested_width, gint requested_height)
1069 if (!exif) return nullptr;
1071 if (!exif->image()) return nullptr;
1073 std::string const path = exif->image()->io().path();
1074 /* given image pathname, first do simple (and fast) file extension test */
1075 gboolean is_raw = filter_file_class(path.c_str(), FORMAT_CLASS_RAWIMAGE);
1077 if (!is_raw && requested_width == 0) return nullptr;
1081 Exiv2::PreviewManager pm(*exif->image());
1083 Exiv2::PreviewPropertiesList list = pm.getPreviewProperties();
1087 Exiv2::PreviewPropertiesList::iterator pos;
1088 auto last = --list.end();
1090 if (requested_width == 0)
1092 pos = last; // the largest
1099 if (pos->width_ >= static_cast<uint32_t>(requested_width) &&
1100 pos->height_ >= static_cast<uint32_t>(requested_height)) break;
1104 // we are not interested in smaller thumbnails in normal image formats - we can use full image instead
1107 if (pos->width_ < static_cast<uint32_t>(requested_width) || pos->height_ < static_cast<uint32_t>(requested_height)) return nullptr;
1111 Exiv2::PreviewImage image = pm.getPreviewImage(*pos);
1113 // Let's not touch data_len until we finish copy.
1114 // Just in case we run into OOM.
1115 size_t img_sz = image.size();
1116 auto* b = new Exiv2::byte[img_sz];
1117 std::copy_n(image.pData(), img_sz, b);
1123 catch (Exiv2::AnyError& e) {
1129 void exif_free_preview(const guchar *buf)
1131 delete[] static_cast<const Exiv2::byte*>(buf);
1134 #endif /* HAVE_EXIV2 */
1135 /* vim: set shiftwidth=8 softtabstop=0 cindent cinoptions={1s: */