G_MODULE_EXPORT gboolean tracker_extract_get_metadata (TrackerExtractInfo *info) { TIFF *image; TrackerXmpData *xd = NULL; TrackerIptcData *id = NULL; TrackerExifData *ed = NULL; MergeData md = { 0 }; TiffData td = { 0 }; gchar *filename, *uri; gchar *date; glong exif_offset; GPtrArray *keywords; guint i; GFile *file; TrackerSparqlBuilder *metadata, *preupdate; const gchar *graph, *urn; int fd; #ifdef HAVE_LIBIPTCDATA gchar *iptc_offset; guint32 iptc_size; #endif #ifdef HAVE_EXEMPI gchar *xmp_offset; guint32 size; #endif /* HAVE_EXEMPI */ file = tracker_extract_info_get_file (info); filename = g_file_get_path (file); preupdate = tracker_extract_info_get_preupdate_builder (info); metadata = tracker_extract_info_get_metadata_builder (info); graph = tracker_extract_info_get_graph (info); urn = tracker_extract_info_get_urn (info); fd = tracker_file_open_fd (filename); if (fd == -1) { g_warning ("Could not open tiff file '%s': %s\n", filename, g_strerror (errno)); g_free (filename); return FALSE; } if ((image = TIFFFdOpen (fd, filename, "r")) == NULL){ g_warning ("Could not open image:'%s'\n", filename); g_free (filename); close (fd); return FALSE; } tracker_sparql_builder_predicate (metadata, "a"); tracker_sparql_builder_object (metadata, "nfo:Image"); tracker_sparql_builder_object (metadata, "nmm:Photo"); uri = g_file_get_uri (file); #ifdef HAVE_LIBIPTCDATA if (TIFFGetField (image, TIFFTAG_RICHTIFFIPTC, &iptc_size, &iptc_offset)) { if (TIFFIsByteSwapped(image) != 0) { TIFFSwabArrayOfLong((uint32*) iptc_offset, (unsigned long) iptc_size); } id = tracker_iptc_new (iptc_offset, 4 * iptc_size, uri); } #endif /* HAVE_LIBIPTCDATA */ if (!id) { id = g_new0 (TrackerIptcData, 1); } /* FIXME There are problems between XMP data embedded with different tools due to bugs in the original spec (type) */ #ifdef HAVE_EXEMPI if (TIFFGetField (image, TIFFTAG_XMLPACKET, &size, &xmp_offset)) { xd = tracker_xmp_new (xmp_offset, size, uri); } #endif /* HAVE_EXEMPI */ if (!xd) { xd = g_new0 (TrackerXmpData, 1); } ed = g_new0 (TrackerExifData, 1); /* Get Tiff specifics */ td.width = tag_to_string (image, TIFFTAG_IMAGEWIDTH, TAG_TYPE_UINT32); td.length = tag_to_string (image, TIFFTAG_IMAGELENGTH, TAG_TYPE_UINT32); td.artist = tag_to_string (image, TIFFTAG_ARTIST, TAG_TYPE_STRING); td.copyright = tag_to_string (image, TIFFTAG_COPYRIGHT, TAG_TYPE_STRING); date = tag_to_string (image, TIFFTAG_DATETIME, TAG_TYPE_STRING); td.date = tracker_date_guess (date); g_free (date); td.title = tag_to_string (image, TIFFTAG_DOCUMENTNAME, TAG_TYPE_STRING); td.description = tag_to_string (image, TIFFTAG_IMAGEDESCRIPTION, TAG_TYPE_STRING); td.make = tag_to_string (image, TIFFTAG_MAKE, TAG_TYPE_STRING); td.model = tag_to_string (image, TIFFTAG_MODEL, TAG_TYPE_STRING); td.orientation = get_orientation (image); /* Get Exif specifics */ if (TIFFGetField (image, TIFFTAG_EXIFIFD, &exif_offset)) { if (TIFFReadEXIFDirectory (image, exif_offset)) { ed->exposure_time = tag_to_string (image, EXIFTAG_EXPOSURETIME, TAG_TYPE_DOUBLE); ed->fnumber = tag_to_string (image, EXIFTAG_FNUMBER, TAG_TYPE_DOUBLE); ed->iso_speed_ratings = tag_to_string (image, EXIFTAG_ISOSPEEDRATINGS, TAG_TYPE_C16_UINT16); date = tag_to_string (image, EXIFTAG_DATETIMEORIGINAL, TAG_TYPE_STRING); ed->time_original = tracker_date_guess (date); g_free (date); ed->metering_mode = get_metering_mode (image); ed->flash = get_flash (image); ed->focal_length = tag_to_string (image, EXIFTAG_DATETIMEORIGINAL, TAG_TYPE_DOUBLE); ed->white_balance = get_white_balance (image); /* ed->software = tag_to_string (image, EXIFTAG_SOFTWARE, TAG_TYPE_STRING); */ } } TIFFClose (image); g_free (filename); md.title = tracker_coalesce_strip (5, xd->title, xd->pdf_title, td.title, ed->document_name, xd->title2); md.orientation = tracker_coalesce_strip (4, xd->orientation, td.orientation, ed->orientation, id->image_orientation); md.copyright = tracker_coalesce_strip (4, xd->rights, td.copyright, ed->copyright, id->copyright_notice); md.white_balance = tracker_coalesce_strip (2, xd->white_balance, ed->white_balance); md.fnumber = tracker_coalesce_strip (2, xd->fnumber, ed->fnumber); md.flash = tracker_coalesce_strip (2, xd->flash, ed->flash); md.focal_length = tracker_coalesce_strip (2, xd->focal_length, ed->focal_length); md.artist = tracker_coalesce_strip (4, xd->artist, td.artist, ed->artist, xd->contributor); md.exposure_time = tracker_coalesce_strip (2, xd->exposure_time, ed->exposure_time); md.iso_speed_ratings = tracker_coalesce_strip (2, xd->iso_speed_ratings, ed->iso_speed_ratings); md.date = tracker_coalesce_strip (6, xd->date, xd->time_original, td.date, ed->time, id->date_created, ed->time_original); md.description = tracker_coalesce_strip (3, xd->description, td.description, ed->description); md.metering_mode = tracker_coalesce_strip (2, xd->metering_mode, ed->metering_mode); md.city = tracker_coalesce_strip (2, xd->city, id->city); md.state = tracker_coalesce_strip (2, xd->state, id->state); md.address = tracker_coalesce_strip (2, xd->address, id->sublocation); md.country = tracker_coalesce_strip (2, xd->country, id->country_name); /* FIXME We are not handling the altitude ref here for xmp */ md.gps_altitude = tracker_coalesce_strip (2, xd->gps_altitude, ed->gps_altitude); md.gps_latitude = tracker_coalesce_strip (2, xd->gps_latitude, ed->gps_latitude); md.gps_longitude = tracker_coalesce_strip (2, xd->gps_longitude, ed->gps_longitude); md.gps_direction = tracker_coalesce_strip (2, xd->gps_direction, ed->gps_direction); md.creator = tracker_coalesce_strip (3, xd->creator, id->byline, id->credit); md.x_dimension = tracker_coalesce_strip (2, td.width, ed->x_dimension); md.y_dimension = tracker_coalesce_strip (2, td.length, ed->y_dimension); md.make = tracker_coalesce_strip (3, xd->make, td.make, ed->make); md.model = tracker_coalesce_strip (3, xd->model, td.model, ed->model); keywords = g_ptr_array_new_with_free_func ((GDestroyNotify) g_free); if (ed->user_comment) { tracker_sparql_builder_predicate (metadata, "nie:comment"); tracker_sparql_builder_object_unvalidated (metadata, ed->user_comment); } if (md.x_dimension) { tracker_sparql_builder_predicate (metadata, "nfo:width"); tracker_sparql_builder_object_unvalidated (metadata, md.x_dimension); } if (md.y_dimension) { tracker_sparql_builder_predicate (metadata, "nfo:height"); tracker_sparql_builder_object_unvalidated (metadata, md.y_dimension); } if (xd->keywords) { tracker_keywords_parse (keywords, xd->keywords); } if (xd->pdf_keywords) { tracker_keywords_parse (keywords, xd->pdf_keywords); } if (xd->subject) { tracker_keywords_parse (keywords, xd->subject); } if (xd->publisher) { gchar *uri = tracker_sparql_escape_uri_printf ("urn:contact:%s", xd->publisher); tracker_sparql_builder_insert_open (preupdate, NULL); if (graph) { tracker_sparql_builder_graph_open (preupdate, graph); } tracker_sparql_builder_subject_iri (preupdate, uri); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nco:Contact"); tracker_sparql_builder_predicate (preupdate, "nco:fullname"); tracker_sparql_builder_object_unvalidated (preupdate, xd->publisher); if (graph) { tracker_sparql_builder_graph_close (preupdate); } tracker_sparql_builder_insert_close (preupdate); tracker_sparql_builder_predicate (metadata, "nco:publisher"); tracker_sparql_builder_object_iri (metadata, uri); g_free (uri); } if (xd->type) { tracker_sparql_builder_predicate (metadata, "dc:type"); tracker_sparql_builder_object_unvalidated (metadata, xd->type); } if (xd->format) { tracker_sparql_builder_predicate (metadata, "dc:format"); tracker_sparql_builder_object_unvalidated (metadata, xd->format); } if (xd->identifier) { tracker_sparql_builder_predicate (metadata, "dc:identifier"); tracker_sparql_builder_object_unvalidated (metadata, xd->identifier); } if (xd->source) { tracker_sparql_builder_predicate (metadata, "dc:source"); tracker_sparql_builder_object_unvalidated (metadata, xd->source); } if (xd->language) { tracker_sparql_builder_predicate (metadata, "dc:language"); tracker_sparql_builder_object_unvalidated (metadata, xd->language); } if (xd->relation) { tracker_sparql_builder_predicate (metadata, "dc:relation"); tracker_sparql_builder_object_unvalidated (metadata, xd->relation); } if (xd->coverage) { tracker_sparql_builder_predicate (metadata, "dc:coverage"); tracker_sparql_builder_object_unvalidated (metadata, xd->coverage); } if (xd->rating) { tracker_sparql_builder_predicate (metadata, "nao:numericRating"); tracker_sparql_builder_object_unvalidated (metadata, xd->rating); } if (xd->license) { tracker_sparql_builder_predicate (metadata, "nie:license"); tracker_sparql_builder_object_unvalidated (metadata, xd->license); } if (xd->regions) { tracker_xmp_apply_regions (preupdate, metadata, graph, xd); } if (md.address || md.state || md.country || md.city || md.gps_altitude || md.gps_latitude || md.gps_longitude) { tracker_sparql_builder_predicate (metadata, "slo:location"); tracker_sparql_builder_object_blank_open (metadata); /* GeoPoint */ tracker_sparql_builder_predicate (metadata, "a"); tracker_sparql_builder_object (metadata, "slo:GeoLocation"); if (md.address || md.state || md.country || md.city) { gchar *addruri; addruri = tracker_sparql_get_uuid_urn (); tracker_sparql_builder_predicate (metadata, "slo:postalAddress"); tracker_sparql_builder_object_iri (metadata, addruri); tracker_sparql_builder_insert_open (preupdate, NULL); if (graph) { tracker_sparql_builder_graph_open (preupdate, graph); } tracker_sparql_builder_subject_iri (preupdate, addruri); g_free (addruri); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nco:PostalAddress"); if (md.address) { tracker_sparql_builder_predicate (preupdate, "nco:streetAddress"); tracker_sparql_builder_object_unvalidated (preupdate, md.address); } if (md.state) { tracker_sparql_builder_predicate (preupdate, "nco:region"); tracker_sparql_builder_object_unvalidated (preupdate, md.state); } if (md.city) { tracker_sparql_builder_predicate (preupdate, "nco:locality"); tracker_sparql_builder_object_unvalidated (preupdate, md.city); } if (md.country) { tracker_sparql_builder_predicate (preupdate, "nco:country"); tracker_sparql_builder_object_unvalidated (preupdate, md.country); } if (graph) { tracker_sparql_builder_graph_close (preupdate); } tracker_sparql_builder_insert_close (preupdate); } if (md.gps_altitude) { tracker_sparql_builder_predicate (metadata, "slo:altitude"); tracker_sparql_builder_object_unvalidated (metadata, md.gps_altitude); } if (md.gps_latitude) { tracker_sparql_builder_predicate (metadata, "slo:latitude"); tracker_sparql_builder_object_unvalidated (metadata, md.gps_latitude); } if (md.gps_longitude) { tracker_sparql_builder_predicate (metadata, "slo:longitude"); tracker_sparql_builder_object_unvalidated (metadata, md.gps_longitude); } tracker_sparql_builder_object_blank_close (metadata); /* GeoLocation */ } if (md.gps_direction) { tracker_sparql_builder_predicate (metadata, "nfo:heading"); tracker_sparql_builder_object_unvalidated (metadata, md.gps_direction); } if (id->contact) { gchar *uri = tracker_sparql_escape_uri_printf ("urn:contact:%s", id->contact); tracker_sparql_builder_insert_open (preupdate, NULL); if (graph) { tracker_sparql_builder_graph_open (preupdate, graph); } tracker_sparql_builder_subject_iri (preupdate, uri); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nco:Contact"); tracker_sparql_builder_predicate (preupdate, "nco:fullname"); tracker_sparql_builder_object_unvalidated (preupdate, id->contact); if (graph) { tracker_sparql_builder_graph_close (preupdate); } tracker_sparql_builder_insert_close (preupdate); tracker_sparql_builder_predicate (metadata, "nco:representative"); tracker_sparql_builder_object_iri (metadata, uri); g_free (uri); } if (id->keywords) { tracker_keywords_parse (keywords, id->keywords); } for (i = 0; i < keywords->len; i++) { gchar *escaped, *subject; const gchar *p; p = g_ptr_array_index (keywords, i); escaped = tracker_sparql_escape_string (p); subject = g_strdup_printf ("_:tag%d", i + 1); /* ensure tag with specified label exists */ tracker_sparql_builder_insert_open (preupdate, graph); tracker_sparql_builder_subject (preupdate, subject); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nao:Tag"); tracker_sparql_builder_predicate (preupdate, "nao:prefLabel"); tracker_sparql_builder_object_unvalidated (preupdate, escaped); tracker_sparql_builder_insert_close (preupdate); tracker_sparql_builder_append (preupdate, "WHERE { FILTER (NOT EXISTS { " "?tag a nao:Tag ; nao:prefLabel \""); tracker_sparql_builder_append (preupdate, escaped); tracker_sparql_builder_append (preupdate, "\" }) }\n"); /* associate file with tag */ tracker_sparql_builder_insert_open (preupdate, graph); tracker_sparql_builder_subject_iri (preupdate, urn); tracker_sparql_builder_predicate (preupdate, "nao:hasTag"); tracker_sparql_builder_object (preupdate, "?tag"); tracker_sparql_builder_insert_close (preupdate); tracker_sparql_builder_where_open (preupdate); tracker_sparql_builder_subject (preupdate, "?tag"); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nao:Tag"); tracker_sparql_builder_predicate (preupdate, "nao:prefLabel"); tracker_sparql_builder_object_unvalidated (preupdate, escaped); tracker_sparql_builder_where_close (preupdate); g_free (subject); g_free (escaped); } g_ptr_array_free (keywords, TRUE); if (md.make || md.model) { gchar *equip_uri; equip_uri = tracker_sparql_escape_uri_printf ("urn:equipment:%s:%s:", md.make ? md.make : "", md.model ? md.model : ""); tracker_sparql_builder_insert_open (preupdate, NULL); if (graph) { tracker_sparql_builder_graph_open (preupdate, graph); } tracker_sparql_builder_subject_iri (preupdate, equip_uri); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nfo:Equipment"); if (md.make) { tracker_sparql_builder_predicate (preupdate, "nfo:manufacturer"); tracker_sparql_builder_object_unvalidated (preupdate, md.make); } if (md.model) { tracker_sparql_builder_predicate (preupdate, "nfo:model"); tracker_sparql_builder_object_unvalidated (preupdate, md.model); } if (graph) { tracker_sparql_builder_graph_close (preupdate); } tracker_sparql_builder_insert_close (preupdate); tracker_sparql_builder_predicate (metadata, "nfo:equipment"); tracker_sparql_builder_object_iri (metadata, equip_uri); g_free (equip_uri); } tracker_guarantee_title_from_file (metadata, "nie:title", md.title, uri, NULL); if (md.orientation) { tracker_sparql_builder_predicate (metadata, "nfo:orientation"); tracker_sparql_builder_object_unvalidated (metadata, md.orientation); } if (md.copyright) { tracker_sparql_builder_predicate (metadata, "nie:copyright"); tracker_sparql_builder_object_unvalidated (metadata, md.copyright); } if (md.white_balance) { tracker_sparql_builder_predicate (metadata, "nmm:whiteBalance"); tracker_sparql_builder_object_unvalidated (metadata, md.white_balance); } if (md.fnumber) { tracker_sparql_builder_predicate (metadata, "nmm:fnumber"); tracker_sparql_builder_object_unvalidated (metadata, md.fnumber); } if (md.flash) { tracker_sparql_builder_predicate (metadata, "nmm:flash"); tracker_sparql_builder_object_unvalidated (metadata, md.flash); } if (md.focal_length) { tracker_sparql_builder_predicate (metadata, "nmm:focalLength"); tracker_sparql_builder_object_unvalidated (metadata, md.focal_length); } if (md.artist) { gchar *uri = tracker_sparql_escape_uri_printf ("urn:contact:%s", md.artist); tracker_sparql_builder_insert_open (preupdate, NULL); if (graph) { tracker_sparql_builder_graph_open (preupdate, graph); } tracker_sparql_builder_subject_iri (preupdate, uri); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nco:Contact"); tracker_sparql_builder_predicate (preupdate, "nco:fullname"); tracker_sparql_builder_object_unvalidated (preupdate, md.artist); if (graph) { tracker_sparql_builder_graph_close (preupdate); } tracker_sparql_builder_insert_close (preupdate); tracker_sparql_builder_predicate (metadata, "nco:contributor"); tracker_sparql_builder_object_iri (metadata, uri); g_free (uri); } if (md.exposure_time) { tracker_sparql_builder_predicate (metadata, "nmm:exposureTime"); tracker_sparql_builder_object_unvalidated (metadata, md.exposure_time); } if (md.iso_speed_ratings) { tracker_sparql_builder_predicate (metadata, "nmm:isoSpeed"); tracker_sparql_builder_object_unvalidated (metadata, md.iso_speed_ratings); } tracker_guarantee_date_from_file_mtime (metadata, "nie:contentCreated", md.date, uri); if (md.description) { tracker_sparql_builder_predicate (metadata, "nie:description"); tracker_sparql_builder_object_unvalidated (metadata, md.description); } if (md.metering_mode) { tracker_sparql_builder_predicate (metadata, "nmm:meteringMode"); tracker_sparql_builder_object_unvalidated (metadata, md.metering_mode); } if (md.creator) { gchar *uri = tracker_sparql_escape_uri_printf ("urn:contact:%s", md.creator); tracker_sparql_builder_insert_open (preupdate, NULL); if (graph) { tracker_sparql_builder_graph_open (preupdate, graph); } tracker_sparql_builder_subject_iri (preupdate, uri); tracker_sparql_builder_predicate (preupdate, "a"); tracker_sparql_builder_object (preupdate, "nco:Contact"); tracker_sparql_builder_predicate (preupdate, "nco:fullname"); tracker_sparql_builder_object_unvalidated (preupdate, md.creator); if (graph) { tracker_sparql_builder_graph_close (preupdate); } tracker_sparql_builder_insert_close (preupdate); /* NOTE: We only have affiliation with * nco:PersonContact and we are using * nco:Contact here. */ /* if (id->byline_title) { */ /* tracker_sparql_builder_insert_open (preupdate, NULL); */ /* tracker_sparql_builder_subject (preupdate, "_:affiliation_by_line"); */ /* tracker_sparql_builder_predicate (preupdate, "a"); */ /* tracker_sparql_builder_object (preupdate, "nco:Affiliation"); */ /* tracker_sparql_builder_predicate (preupdate, "nco:title"); */ /* tracker_sparql_builder_object_unvalidated (preupdate, id->byline_title); */ /* tracker_sparql_builder_insert_close (preupdate); */ /* tracker_sparql_builder_predicate (metadata, "a"); */ /* tracker_sparql_builder_object (metadata, "nco:PersonContact"); */ /* tracker_sparql_builder_predicate (metadata, "nco:hasAffiliation"); */ /* tracker_sparql_builder_object (metadata, "_:affiliation_by_line"); */ /* } */ tracker_sparql_builder_predicate (metadata, "nco:creator"); tracker_sparql_builder_object_iri (metadata, uri); g_free (uri); } if (ed->x_resolution) { gdouble value; value = ed->resolution_unit != 3 ? g_strtod (ed->x_resolution, NULL) : g_strtod (ed->x_resolution, NULL) * CM_TO_INCH; tracker_sparql_builder_predicate (metadata, "nfo:horizontalResolution"); tracker_sparql_builder_object_double (metadata, value); } if (ed->y_resolution) { gdouble value; value = ed->resolution_unit != 3 ? g_strtod (ed->y_resolution, NULL) : g_strtod (ed->y_resolution, NULL) * CM_TO_INCH; tracker_sparql_builder_predicate (metadata, "nfo:verticalResolution"); tracker_sparql_builder_object_double (metadata, value); } tiff_data_free (&td); tracker_exif_free (ed); tracker_xmp_free (xd); tracker_iptc_free (id); g_free (uri); close (fd); return TRUE; }
int main() { TIFF *tif; unsigned char buf[SPP] = { 0, 127, 255 }; uint64 dir_offset = 0, dir_offset2 = 0; uint64 read_dir_offset = 0, read_dir_offset2 = 0; uint64 *dir_offset2_ptr = NULL; char *ascii_value; uint16 count16 = 0; /* We write the main directory as a simple image. */ tif = TIFFOpen(filename, "w+"); if (!tif) { fprintf (stderr, "Can't create test TIFF file %s.\n", filename); return 1; } if (!TIFFSetField(tif, TIFFTAG_IMAGEWIDTH, width)) { fprintf (stderr, "Can't set ImageWidth tag.\n"); goto failure; } if (!TIFFSetField(tif, TIFFTAG_IMAGELENGTH, length)) { fprintf (stderr, "Can't set ImageLength tag.\n"); goto failure; } if (!TIFFSetField(tif, TIFFTAG_BITSPERSAMPLE, bps)) { fprintf (stderr, "Can't set BitsPerSample tag.\n"); goto failure; } if (!TIFFSetField(tif, TIFFTAG_SAMPLESPERPIXEL, SPP)) { fprintf (stderr, "Can't set SamplesPerPixel tag.\n"); goto failure; } if (!TIFFSetField(tif, TIFFTAG_ROWSPERSTRIP, rows_per_strip)) { fprintf (stderr, "Can't set SamplesPerPixel tag.\n"); goto failure; } if (!TIFFSetField(tif, TIFFTAG_PLANARCONFIG, planarconfig)) { fprintf (stderr, "Can't set PlanarConfiguration tag.\n"); goto failure; } if (!TIFFSetField(tif, TIFFTAG_PHOTOMETRIC, photometric)) { fprintf (stderr, "Can't set PhotometricInterpretation tag.\n"); goto failure; } /* Write dummy pixel data. */ if (TIFFWriteScanline(tif, buf, 0, 0) == -1) { fprintf (stderr, "Can't write image data.\n"); goto failure; } if (!TIFFWriteDirectory( tif )) { fprintf (stderr, "TIFFWriteDirectory() failed.\n"); goto failure; } /* * Now create an EXIF directory. */ if (TIFFCreateEXIFDirectory(tif) != 0) { fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" ); goto failure; } if (!TIFFSetField( tif, EXIFTAG_SPECTRALSENSITIVITY, "EXIF Spectral Sensitivity")) { fprintf (stderr, "Can't write SPECTRALSENSITIVITY\n" ); goto failure; } if (!TIFFWriteCustomDirectory( tif, &dir_offset )) { fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n"); goto failure; } /* * Now create a custom directory with tags that conflict with mainline * TIFF tags. */ TIFFFreeDirectory( tif ); if (TIFFCreateCustomDirectory(tif, &customFieldArray) != 0) { fprintf (stderr, "TIFFCreateEXIFDirectory() failed.\n" ); goto failure; } if (!TIFFSetField( tif, TIFFTAG_IMAGEWIDTH, "*Custom1")) { /* not really IMAGEWIDTH */ fprintf (stderr, "Can't write pseudo-IMAGEWIDTH.\n" ); goto failure; } if (!TIFFSetField( tif, TIFFTAG_DOTRANGE, "*Custom2")) { /* not really DOTWIDTH */ fprintf (stderr, "Can't write pseudo-DOTWIDTH.\n" ); goto failure; } if (!TIFFWriteCustomDirectory( tif, &dir_offset2 )) { fprintf (stderr, "TIFFWriteCustomDirectory() with EXIF failed.\n"); goto failure; } /* * Go back to the first directory, and add the EXIFIFD pointer. */ TIFFSetDirectory(tif, 0); TIFFSetField(tif, TIFFTAG_EXIFIFD, dir_offset ); TIFFSetField(tif, TIFFTAG_SUBIFD, 1, &dir_offset2 ); TIFFClose(tif); /* Ok, now test whether we can read written values in the EXIF directory. */ tif = TIFFOpen(filename, "r"); TIFFGetField(tif, TIFFTAG_EXIFIFD, &read_dir_offset ); if( read_dir_offset != dir_offset ) { fprintf (stderr, "Did not get expected EXIFIFD.\n" ); goto failure; } TIFFGetField(tif, TIFFTAG_SUBIFD, &count16, &dir_offset2_ptr ); read_dir_offset2 = dir_offset2_ptr[0]; if( read_dir_offset2 != dir_offset2 || count16 != 1) { fprintf (stderr, "Did not get expected SUBIFD.\n" ); goto failure; } if( !TIFFReadEXIFDirectory(tif, read_dir_offset) ) { fprintf (stderr, "TIFFReadEXIFDirectory() failed.\n" ); goto failure; } if (!TIFFGetField( tif, EXIFTAG_SPECTRALSENSITIVITY, &ascii_value) ) { fprintf (stderr, "reading SPECTRALSENSITIVITY failed.\n" ); goto failure; } if( strcmp(ascii_value,"EXIF Spectral Sensitivity") != 0) { fprintf (stderr, "got wrong SPECTRALSENSITIVITY value.\n" ); goto failure; } /* Try reading the Custom directory */ if( !TIFFReadCustomDirectory(tif, read_dir_offset2, &customFieldArray) ) { fprintf (stderr, "TIFFReadCustomDirectory() failed.\n" ); goto failure; } if (!TIFFGetField( tif, TIFFTAG_IMAGEWIDTH, &ascii_value) ) { fprintf (stderr, "reading pseudo-IMAGEWIDTH failed.\n" ); goto failure; } if( strcmp(ascii_value,"*Custom1") != 0) { fprintf (stderr, "got wrong pseudo-IMAGEWIDTH value.\n" ); goto failure; } if (!TIFFGetField( tif, TIFFTAG_DOTRANGE, &ascii_value) ) { fprintf (stderr, "reading pseudo-DOTRANGE failed.\n" ); goto failure; } if( strcmp(ascii_value,"*Custom2") != 0) { fprintf (stderr, "got wrong pseudo-DOTRANGE value.\n" ); goto failure; } TIFFClose(tif); /* All tests passed; delete file and exit with success status. */ unlink(filename); return 0; failure: /* * Something goes wrong; close file and return unsuccessful status. * Do not remove the file for further manual investigation. */ TIFFClose(tif); return 1; }
void TIFFInput::readspec (bool read_meta) { uint32 width = 0, height = 0, depth = 0; unsigned short nchans = 1; TIFFGetField (m_tif, TIFFTAG_IMAGEWIDTH, &width); TIFFGetField (m_tif, TIFFTAG_IMAGELENGTH, &height); TIFFGetFieldDefaulted (m_tif, TIFFTAG_IMAGEDEPTH, &depth); TIFFGetFieldDefaulted (m_tif, TIFFTAG_SAMPLESPERPIXEL, &nchans); if (read_meta) { // clear the whole m_spec and start fresh m_spec = ImageSpec ((int)width, (int)height, (int)nchans); } else { // assume m_spec is valid, except for things that might differ // between MIP levels m_spec.width = (int)width; m_spec.height = (int)height; m_spec.depth = (int)depth; m_spec.full_x = 0; m_spec.full_y = 0; m_spec.full_z = 0; m_spec.full_width = (int)width; m_spec.full_height = (int)height; m_spec.full_depth = (int)depth; m_spec.nchannels = (int)nchans; } float x = 0, y = 0; TIFFGetField (m_tif, TIFFTAG_XPOSITION, &x); TIFFGetField (m_tif, TIFFTAG_YPOSITION, &y); m_spec.x = (int)x; m_spec.y = (int)y; m_spec.z = 0; // FIXME? - TIFF spec describes the positions as in resolutionunit. // What happens if this is not unitless pixels? Are we interpreting // it all wrong? if (TIFFGetField (m_tif, TIFFTAG_PIXAR_IMAGEFULLWIDTH, &width) == 1 && width > 0) m_spec.full_width = width; if (TIFFGetField (m_tif, TIFFTAG_PIXAR_IMAGEFULLLENGTH, &height) == 1 && height > 0) m_spec.full_height = height; if (TIFFIsTiled (m_tif)) { TIFFGetField (m_tif, TIFFTAG_TILEWIDTH, &m_spec.tile_width); TIFFGetField (m_tif, TIFFTAG_TILELENGTH, &m_spec.tile_height); TIFFGetFieldDefaulted (m_tif, TIFFTAG_TILEDEPTH, &m_spec.tile_depth); } else { m_spec.tile_width = 0; m_spec.tile_height = 0; m_spec.tile_depth = 0; } m_bitspersample = 8; TIFFGetField (m_tif, TIFFTAG_BITSPERSAMPLE, &m_bitspersample); m_spec.attribute ("oiio:BitsPerSample", (int)m_bitspersample); unsigned short sampleformat = SAMPLEFORMAT_UINT; TIFFGetFieldDefaulted (m_tif, TIFFTAG_SAMPLEFORMAT, &sampleformat); switch (m_bitspersample) { case 1: case 2: case 4: case 6: // Make 1, 2, 4, 6 bpp look like byte images case 8: if (sampleformat == SAMPLEFORMAT_UINT) m_spec.set_format (TypeDesc::UINT8); else if (sampleformat == SAMPLEFORMAT_INT) m_spec.set_format (TypeDesc::INT8); else m_spec.set_format (TypeDesc::UINT8); // punt break; case 10: case 12: case 14: // Make 10, 12, 14 bpp look like 16 bit images case 16: if (sampleformat == SAMPLEFORMAT_UINT) m_spec.set_format (TypeDesc::UINT16); else if (sampleformat == SAMPLEFORMAT_INT) m_spec.set_format (TypeDesc::INT16); else if (sampleformat == SAMPLEFORMAT_IEEEFP) m_spec.set_format (TypeDesc::HALF); // not to spec, but why not? else m_spec.set_format (TypeDesc::UNKNOWN); break; case 32: if (sampleformat == SAMPLEFORMAT_IEEEFP) m_spec.set_format (TypeDesc::FLOAT); else if (sampleformat == SAMPLEFORMAT_UINT) m_spec.set_format (TypeDesc::UINT32); else if (sampleformat == SAMPLEFORMAT_INT) m_spec.set_format (TypeDesc::INT32); else m_spec.set_format (TypeDesc::UNKNOWN); break; case 64: if (sampleformat == SAMPLEFORMAT_IEEEFP) m_spec.set_format (TypeDesc::DOUBLE); else m_spec.set_format (TypeDesc::UNKNOWN); break; default: m_spec.set_format (TypeDesc::UNKNOWN); break; } // If we've been instructed to skip reading metadata, because it is // guaranteed to be identical to what we already have in m_spec, // skip everything following. if (! read_meta) return; // Use the table for all the obvious things that can be mindlessly // shoved into the image spec. for (int i = 0; tiff_tag_table[i].name; ++i) find_tag (tiff_tag_table[i].tifftag, tiff_tag_table[i].tifftype, tiff_tag_table[i].name); // Now we need to get fields "by hand" for anything else that is less // straightforward... m_photometric = (m_spec.nchannels == 1 ? PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB); TIFFGetField (m_tif, TIFFTAG_PHOTOMETRIC, &m_photometric); m_spec.attribute ("tiff:PhotometricInterpretation", (int)m_photometric); if (m_photometric == PHOTOMETRIC_PALETTE) { // Read the color map unsigned short *r = NULL, *g = NULL, *b = NULL; TIFFGetField (m_tif, TIFFTAG_COLORMAP, &r, &g, &b); ASSERT (r != NULL && g != NULL && b != NULL); m_colormap.clear (); m_colormap.insert (m_colormap.end(), r, r + (1 << m_bitspersample)); m_colormap.insert (m_colormap.end(), g, g + (1 << m_bitspersample)); m_colormap.insert (m_colormap.end(), b, b + (1 << m_bitspersample)); // Palette TIFF images are always 3 channels (to the client) m_spec.nchannels = 3; m_spec.default_channel_names (); // FIXME - what about palette + extra (alpha?) channels? Is that // allowed? And if so, ever encountered in the wild? } TIFFGetFieldDefaulted (m_tif, TIFFTAG_PLANARCONFIG, &m_planarconfig); m_separate = (m_planarconfig == PLANARCONFIG_SEPARATE && m_spec.nchannels > 1 && m_photometric != PHOTOMETRIC_PALETTE); m_spec.attribute ("tiff:PlanarConfiguration", (int)m_planarconfig); if (m_planarconfig == PLANARCONFIG_SEPARATE) m_spec.attribute ("planarconfig", "separate"); else m_spec.attribute ("planarconfig", "contig"); int compress = 0; TIFFGetFieldDefaulted (m_tif, TIFFTAG_COMPRESSION, &compress); m_spec.attribute ("tiff:Compression", compress); switch (compress) { case COMPRESSION_NONE : m_spec.attribute ("compression", "none"); break; case COMPRESSION_LZW : m_spec.attribute ("compression", "lzw"); break; case COMPRESSION_CCITTRLE : m_spec.attribute ("compression", "ccittrle"); break; case COMPRESSION_DEFLATE : case COMPRESSION_ADOBE_DEFLATE : m_spec.attribute ("compression", "zip"); break; case COMPRESSION_PACKBITS : m_spec.attribute ("compression", "packbits"); break; default: break; } int rowsperstrip = -1; if (! m_spec.tile_width) { TIFFGetField (m_tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); if (rowsperstrip > 0) m_spec.attribute ("tiff:RowsPerStrip", rowsperstrip); } // The libtiff docs say that only uncompressed images, or those with // rowsperstrip==1, support random access to scanlines. m_no_random_access = (compress != COMPRESSION_NONE && rowsperstrip != 1); short resunit = -1; TIFFGetField (m_tif, TIFFTAG_RESOLUTIONUNIT, &resunit); switch (resunit) { case RESUNIT_NONE : m_spec.attribute ("ResolutionUnit", "none"); break; case RESUNIT_INCH : m_spec.attribute ("ResolutionUnit", "in"); break; case RESUNIT_CENTIMETER : m_spec.attribute ("ResolutionUnit", "cm"); break; } get_matrix_attribute ("worldtocamera", TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA); get_matrix_attribute ("worldtoscreen", TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN); get_int_attribute ("tiff:subfiletype", TIFFTAG_SUBFILETYPE); // FIXME -- should subfiletype be "conventionized" and used for all // plugins uniformly? // Do we care about fillorder? No, the TIFF spec says, "We // recommend that FillOrder=2 (lsb-to-msb) be used only in // special-purpose applications". So OIIO will assume msb-to-lsb // convention until somebody finds a TIFF file in the wild that // breaks this assumption. // Special names for shadow maps char *s = NULL; TIFFGetField (m_tif, TIFFTAG_PIXAR_TEXTUREFORMAT, &s); if (s) m_emulate_mipmap = true; if (s && ! strcmp (s, "Shadow")) { for (int c = 0; c < m_spec.nchannels; ++c) m_spec.channelnames[c] = "z"; } unsigned short *sampleinfo = NULL; unsigned short extrasamples = 0; TIFFGetFieldDefaulted (m_tif, TIFFTAG_EXTRASAMPLES, &extrasamples, &sampleinfo); // std::cerr << "Extra samples = " << extrasamples << "\n"; bool alpha_is_unassociated = false; // basic assumption if (extrasamples) { // If the TIFF ExtraSamples tag was specified, use that to figure // out the meaning of alpha. int colorchannels = 3; if (m_photometric == PHOTOMETRIC_MINISWHITE || m_photometric == PHOTOMETRIC_MINISBLACK || m_photometric == PHOTOMETRIC_PALETTE || m_photometric == PHOTOMETRIC_MASK) colorchannels = 1; for (int i = 0, c = colorchannels; i < extrasamples && c < m_spec.nchannels; ++i, ++c) { // std::cerr << " extra " << i << " " << sampleinfo[i] << "\n"; if (sampleinfo[i] == EXTRASAMPLE_ASSOCALPHA) { // This is the alpha channel, associated as usual m_spec.alpha_channel = c; } else if (sampleinfo[i] == EXTRASAMPLE_UNASSALPHA) { // This is the alpha channel, but color is unassociated m_spec.alpha_channel = c; alpha_is_unassociated = true; m_spec.attribute ("oiio:UnassociatedAlpha", 1); } else { DASSERT (sampleinfo[i] == EXTRASAMPLE_UNSPECIFIED); // This extra channel is not alpha at all. Undo any // assumptions we previously made about this channel. if (m_spec.alpha_channel == c) { m_spec.channelnames[c] = Strutil::format("channel%d", c); m_spec.alpha_channel = -1; } } } if (m_spec.alpha_channel >= 0) m_spec.channelnames[m_spec.alpha_channel] = "A"; } // Will we need to do alpha conversions? m_convert_alpha = (m_spec.alpha_channel >= 0 && alpha_is_unassociated && ! m_keep_unassociated_alpha); // N.B. we currently ignore the following TIFF fields: // GrayResponseCurve GrayResponseUnit // MaxSampleValue MinSampleValue // NewSubfileType SubfileType(deprecated) // Colorimetry fields // Search for an EXIF IFD in the TIFF file, and if found, rummage // around for Exif fields. #if TIFFLIB_VERSION > 20050912 /* compat with old TIFF libs - skip Exif */ int exifoffset = 0; if (TIFFGetField (m_tif, TIFFTAG_EXIFIFD, &exifoffset) && TIFFReadEXIFDirectory (m_tif, exifoffset)) { for (int i = 0; exif_tag_table[i].name; ++i) find_tag (exif_tag_table[i].tifftag, exif_tag_table[i].tifftype, exif_tag_table[i].name); // I'm not sure what state TIFFReadEXIFDirectory leaves us. // So to be safe, close and re-seek. TIFFClose (m_tif); #ifdef _WIN32 std::wstring wfilename = Filesystem::path_to_windows_native (m_filename); m_tif = TIFFOpenW (wfilename.c_str(), "rm"); #else m_tif = TIFFOpen (m_filename.c_str(), "rm"); #endif TIFFSetDirectory (m_tif, m_subimage); // A few tidbits to look for ImageIOParameter *p; if ((p = m_spec.find_attribute ("Exif:ColorSpace", TypeDesc::INT))) { // Exif spec says that anything other than 0xffff==uncalibrated // should be interpreted to be sRGB. if (*(const int *)p->data() != 0xffff) m_spec.attribute ("oiio::ColorSpace", "sRGB"); } } #endif #if TIFFLIB_VERSION >= 20051230 // Search for IPTC metadata in IIM form -- but older versions of // libtiff botch the size, so ignore it for very old libtiff. int iptcsize = 0; const void *iptcdata = NULL; if (TIFFGetField (m_tif, TIFFTAG_RICHTIFFIPTC, &iptcsize, &iptcdata)) { std::vector<uint32> iptc ((uint32 *)iptcdata, (uint32 *)iptcdata+iptcsize); if (TIFFIsByteSwapped (m_tif)) TIFFSwabArrayOfLong ((uint32*)&iptc[0], iptcsize); decode_iptc_iim (&iptc[0], iptcsize*4, m_spec); } #endif // Search for an XML packet containing XMP (IPTC, Exif, etc.) int xmlsize = 0; const void *xmldata = NULL; if (TIFFGetField (m_tif, TIFFTAG_XMLPACKET, &xmlsize, &xmldata)) { // std::cerr << "Found XML data, size " << xmlsize << "\n"; if (xmldata && xmlsize) { std::string xml ((const char *)xmldata, xmlsize); decode_xmp (xml, m_spec); } } #if 0 // Experimental -- look for photoshop data int photoshopsize = 0; const void *photoshopdata = NULL; if (TIFFGetField (m_tif, TIFFTAG_PHOTOSHOP, &photoshopsize, &photoshopdata)) { std::cerr << "Found PHOTOSHOP data, size " << photoshopsize << "\n"; if (photoshopdata && photoshopsize) { // std::string photoshop ((const char *)photoshopdata, photoshopsize); // std::cerr << "PHOTOSHOP:\n" << photoshop << "\n---\n"; } } #endif }
void TIFFInput::readspec () { uint32 width = 0, height = 0, depth = 0; unsigned short nchans = 1; TIFFGetField (m_tif, TIFFTAG_IMAGEWIDTH, &width); TIFFGetField (m_tif, TIFFTAG_IMAGELENGTH, &height); TIFFGetFieldDefaulted (m_tif, TIFFTAG_IMAGEDEPTH, &depth); TIFFGetFieldDefaulted (m_tif, TIFFTAG_SAMPLESPERPIXEL, &nchans); m_spec = ImageSpec ((int)width, (int)height, (int)nchans); float x = 0, y = 0; TIFFGetField (m_tif, TIFFTAG_XPOSITION, &x); TIFFGetField (m_tif, TIFFTAG_YPOSITION, &y); m_spec.x = (int)x; m_spec.y = (int)y; m_spec.z = 0; // FIXME? - TIFF spec describes the positions as in resolutionunit. // What happens if this is not unitless pixels? Are we interpreting // it all wrong? if (TIFFGetField (m_tif, TIFFTAG_PIXAR_IMAGEFULLWIDTH, &width) == 1 && width > 0) m_spec.full_width = width; if (TIFFGetField (m_tif, TIFFTAG_PIXAR_IMAGEFULLLENGTH, &height) == 1 && height > 0) m_spec.full_height = height; if (TIFFIsTiled (m_tif)) { TIFFGetField (m_tif, TIFFTAG_TILEWIDTH, &m_spec.tile_width); TIFFGetField (m_tif, TIFFTAG_TILELENGTH, &m_spec.tile_height); TIFFGetFieldDefaulted (m_tif, TIFFTAG_TILEDEPTH, &m_spec.tile_depth); } else { m_spec.tile_width = 0; m_spec.tile_height = 0; m_spec.tile_depth = 0; } m_bitspersample = 8; TIFFGetField (m_tif, TIFFTAG_BITSPERSAMPLE, &m_bitspersample); m_spec.attribute ("oiio:BitsPerSample", (int)m_bitspersample); unsigned short sampleformat = SAMPLEFORMAT_UINT; TIFFGetFieldDefaulted (m_tif, TIFFTAG_SAMPLEFORMAT, &sampleformat); switch (m_bitspersample) { case 1: case 2: case 4: // Make 1, 2, 4 bpp look like byte images case 8: if (sampleformat == SAMPLEFORMAT_UINT) m_spec.set_format (TypeDesc::UINT8); else if (sampleformat == SAMPLEFORMAT_INT) m_spec.set_format (TypeDesc::INT8); else m_spec.set_format (TypeDesc::UINT8); // punt break; case 16: if (sampleformat == SAMPLEFORMAT_UINT) m_spec.set_format (TypeDesc::UINT16); else if (sampleformat == SAMPLEFORMAT_INT) m_spec.set_format (TypeDesc::INT16); break; case 32: if (sampleformat == SAMPLEFORMAT_IEEEFP) m_spec.set_format (TypeDesc::FLOAT); break; case 64: if (sampleformat == SAMPLEFORMAT_IEEEFP) m_spec.set_format (TypeDesc::DOUBLE); break; default: m_spec.set_format (TypeDesc::UNKNOWN); break; } // Use the table for all the obvious things that can be mindlessly // shoved into the image spec. for (int i = 0; tiff_tag_table[i].name; ++i) find_tag (tiff_tag_table[i].tifftag, tiff_tag_table[i].tifftype, tiff_tag_table[i].name); // Now we need to get fields "by hand" for anything else that is less // straightforward... m_photometric = (m_spec.nchannels == 1 ? PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB); TIFFGetField (m_tif, TIFFTAG_PHOTOMETRIC, &m_photometric); m_spec.attribute ("tiff:PhotometricInterpretation", (int)m_photometric); if (m_photometric == PHOTOMETRIC_PALETTE) { // Read the color map unsigned short *r = NULL, *g = NULL, *b = NULL; TIFFGetField (m_tif, TIFFTAG_COLORMAP, &r, &g, &b); ASSERT (r != NULL && g != NULL && b != NULL); m_colormap.clear (); m_colormap.insert (m_colormap.end(), r, r + (1 << m_bitspersample)); m_colormap.insert (m_colormap.end(), g, g + (1 << m_bitspersample)); m_colormap.insert (m_colormap.end(), b, b + (1 << m_bitspersample)); // Palette TIFF images are always 3 channels (to the client) m_spec.nchannels = 3; m_spec.default_channel_names (); } TIFFGetFieldDefaulted (m_tif, TIFFTAG_PLANARCONFIG, &m_planarconfig); m_spec.attribute ("tiff:PlanarConfiguration", (int)m_planarconfig); if (m_planarconfig == PLANARCONFIG_SEPARATE) m_spec.attribute ("planarconfig", "separate"); else m_spec.attribute ("planarconfig", "contig"); int compress = 0; TIFFGetFieldDefaulted (m_tif, TIFFTAG_COMPRESSION, &compress); m_spec.attribute ("tiff:Compression", compress); switch (compress) { case COMPRESSION_NONE : m_spec.attribute ("compression", "none"); break; case COMPRESSION_LZW : m_spec.attribute ("compression", "lzw"); break; case COMPRESSION_CCITTRLE : m_spec.attribute ("compression", "ccittrle"); break; case COMPRESSION_DEFLATE : case COMPRESSION_ADOBE_DEFLATE : m_spec.attribute ("compression", "zip"); break; case COMPRESSION_PACKBITS : m_spec.attribute ("compression", "packbits"); break; default: break; } int rowsperstrip = -1; if (! m_spec.tile_width) { TIFFGetField (m_tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); if (rowsperstrip > 0) m_spec.attribute ("tiff:RowsPerStrip", rowsperstrip); } // The libtiff docs say that only uncompressed images, or those with // rowsperstrip==1, support random access to scanlines. m_no_random_access = (compress != COMPRESSION_NONE && rowsperstrip != 1); short resunit = -1; TIFFGetField (m_tif, TIFFTAG_RESOLUTIONUNIT, &resunit); switch (resunit) { case RESUNIT_NONE : m_spec.attribute ("ResolutionUnit", "none"); break; case RESUNIT_INCH : m_spec.attribute ("ResolutionUnit", "in"); break; case RESUNIT_CENTIMETER : m_spec.attribute ("ResolutionUnit", "cm"); break; } get_matrix_attribute ("worldtocamera", TIFFTAG_PIXAR_MATRIX_WORLDTOCAMERA); get_matrix_attribute ("worldtoscreen", TIFFTAG_PIXAR_MATRIX_WORLDTOSCREEN); get_int_attribute ("tiff:subfiletype", TIFFTAG_SUBFILETYPE); // FIXME -- should subfiletype be "conventionized" and used for all // plugins uniformly? // FIXME: do we care about fillorder for 1-bit and 4-bit images? // Special names for shadow maps char *s = NULL; TIFFGetField (m_tif, TIFFTAG_PIXAR_TEXTUREFORMAT, &s); if (s) m_emulate_mipmap = true; if (s && ! strcmp (s, "Shadow")) { for (int c = 0; c < m_spec.nchannels; ++c) m_spec.channelnames[c] = "z"; } // N.B. we currently ignore the following TIFF fields: // ExtraSamples // GrayResponseCurve GrayResponseUnit // MaxSampleValue MinSampleValue // NewSubfileType SubfileType(deprecated) // Colorimetry fields // Search for an EXIF IFD in the TIFF file, and if found, rummage // around for Exif fields. #if TIFFLIB_VERSION > 20050912 /* compat with old TIFF libs - skip Exif */ int exifoffset = 0; if (TIFFGetField (m_tif, TIFFTAG_EXIFIFD, &exifoffset) && TIFFReadEXIFDirectory (m_tif, exifoffset)) { for (int i = 0; exif_tag_table[i].name; ++i) find_tag (exif_tag_table[i].tifftag, exif_tag_table[i].tifftype, exif_tag_table[i].name); // I'm not sure what state TIFFReadEXIFDirectory leaves us. // So to be safe, close and re-seek. TIFFClose (m_tif); m_tif = TIFFOpen (m_filename.c_str(), "rm"); TIFFSetDirectory (m_tif, m_subimage); // A few tidbits to look for ImageIOParameter *p; if ((p = m_spec.find_attribute ("Exif:ColorSpace", TypeDesc::INT))) { // Exif spec says that anything other than 0xffff==uncalibrated // should be interpreted to be sRGB. if (*(const int *)p->data() != 0xffff) m_spec.attribute ("oiio::ColorSpace", "sRGB"); } } #endif #if TIFFLIB_VERSION >= 20051230 // Search for IPTC metadata in IIM form -- but older versions of // libtiff botch the size, so ignore it for very old libtiff. int iptcsize = 0; const void *iptcdata = NULL; if (TIFFGetField (m_tif, TIFFTAG_RICHTIFFIPTC, &iptcsize, &iptcdata)) { std::vector<uint32> iptc ((uint32 *)iptcdata, (uint32 *)iptcdata+iptcsize); if (TIFFIsByteSwapped (m_tif)) TIFFSwabArrayOfLong ((uint32*)&iptc[0], iptcsize); decode_iptc_iim (&iptc[0], iptcsize*4, m_spec); } #endif // Search for an XML packet containing XMP (IPTC, Exif, etc.) int xmlsize = 0; const void *xmldata = NULL; if (TIFFGetField (m_tif, TIFFTAG_XMLPACKET, &xmlsize, &xmldata)) { // std::cerr << "Found XML data, size " << xmlsize << "\n"; if (xmldata && xmlsize) { std::string xml ((const char *)xmldata, xmlsize); decode_xmp (xml, m_spec); } } #if 0 // Experimental -- look for photoshop data int photoshopsize = 0; const void *photoshopdata = NULL; if (TIFFGetField (m_tif, TIFFTAG_PHOTOSHOP, &photoshopsize, &photoshopdata)) { std::cerr << "Found PHOTOSHOP data, size " << photoshopsize << "\n"; if (photoshopdata && photoshopsize) { // std::string photoshop ((const char *)photoshopdata, photoshopsize); // std::cerr << "PHOTOSHOP:\n" << photoshop << "\n---\n"; } } #endif }