[tracker/gst-geolocation: 2/2] tracker-extract: Add geolocation to gupnp-dlna extractor

[Martyn James Russell <mr src gnome org>]

commit 593a269105e02b1231ee7431506bda01de15986a
Author: Carlos Garnacho <carlosg gnome org>
Date:   Mon Jun 13 15:58:35 2011 +0200

    tracker-extract: Add geolocation to gupnp-dlna extractor

 src/tracker-extract/tracker-extract-gupnp-dlna.c |   88 +++++++++++++++++++++-
 1 files changed, 87 insertions(+), 1 deletions(-)
---
diff --git a/src/tracker-extract/tracker-extract-gupnp-dlna.c b/src/tracker-extract/tracker-extract-gupnp-dlna.c
index 65fcbe3..8d03c4d 100644
--- a/src/tracker-extract/tracker-extract-gupnp-dlna.c
+++ b/src/tracker-extract/tracker-extract-gupnp-dlna.c
@@ -253,6 +253,87 @@ add_keywords_gst_tag (TrackerSparqlBuilder *metadata,
 }
 
 static void
+add_geolocation_tags (TrackerSparqlBuilder *metadata,
+                      TrackerSparqlBuilder *preupdate,
+		      GstTagList           *tag_list)
+{
+	gchar *country, *city, *sublocation;
+	gdouble lat, lon, alt;
+	gboolean has_coords;
+
+	country = city = sublocation = NULL;
+	has_coords = (gst_tag_list_get_double (tag_list, GST_TAG_GEO_LOCATION_LATITUDE, &lat) &&
+		      gst_tag_list_get_double (tag_list, GST_TAG_GEO_LOCATION_LONGITUDE, &lon) &&
+		      gst_tag_list_get_double (tag_list, GST_TAG_GEO_LOCATION_ELEVATION, &alt));
+
+	gst_tag_list_get_string (tag_list, GST_TAG_GEO_LOCATION_CITY, &city);
+	gst_tag_list_get_string (tag_list, GST_TAG_GEO_LOCATION_COUNTRY, &country);
+	gst_tag_list_get_string (tag_list, GST_TAG_GEO_LOCATION_SUBLOCATION, &sublocation);
+
+	if (city || country || sublocation || has_coords) {
+		gchar *address_uri = NULL;
+
+		/* Create postal address */
+		if (city || country || sublocation) {
+			address_uri = tracker_sparql_get_uuid_urn ();
+
+			tracker_sparql_builder_insert_open (preupdate, NULL);
+			tracker_sparql_builder_subject_iri (preupdate, address_uri);
+
+			tracker_sparql_builder_predicate (preupdate, "a");
+			tracker_sparql_builder_object (preupdate, "nco:PostalAddress");
+
+			if (sublocation) {
+				tracker_sparql_builder_predicate (preupdate, "nco:region");
+				tracker_sparql_builder_object_unvalidated (preupdate, sublocation);
+			}
+
+			if (city) {
+				tracker_sparql_builder_predicate (preupdate, "nco:locality");
+				tracker_sparql_builder_object_unvalidated (preupdate, city);
+			}
+
+			if (country) {
+				tracker_sparql_builder_predicate (preupdate, "nco:country");
+				tracker_sparql_builder_object_unvalidated (preupdate, country);
+			}
+
+			tracker_sparql_builder_insert_close (preupdate);
+		}
+
+		/* Create geolocation */
+		tracker_sparql_builder_predicate (metadata, "slo:location");
+
+		tracker_sparql_builder_object_blank_open (metadata);
+		tracker_sparql_builder_predicate (metadata, "a");
+		tracker_sparql_builder_object (metadata, "slo:GeoLocation");
+
+		if (address_uri) {
+			tracker_sparql_builder_predicate (metadata, "slo:postalAddress");
+			tracker_sparql_builder_object_iri (metadata, address_uri);
+		}
+
+		if (has_coords) {
+			tracker_sparql_builder_predicate (metadata, "slo:latitude");
+			tracker_sparql_builder_object_double (metadata, lat);
+
+			tracker_sparql_builder_predicate (metadata, "slo:longitude");
+			tracker_sparql_builder_object_double (metadata, lon);
+
+			tracker_sparql_builder_predicate (metadata, "slo:altitude");
+			tracker_sparql_builder_object_double (metadata, alt);
+		}
+
+		tracker_sparql_builder_object_blank_close (metadata);
+		g_free (address_uri);
+	}
+
+	g_free (city);
+	g_free (country);
+	g_free (sublocation);
+}
+
+static void
 extract_metadata (MetadataExtractor      *extractor,
                   const gchar            *uri,
                   TrackerSparqlBuilder   *preupdate,
@@ -334,7 +415,6 @@ extract_metadata (MetadataExtractor      *extractor,
 
 				g_free (composer);
 			}
-
 		}
 
 		/* Audio */
@@ -679,6 +759,12 @@ extract_metadata (MetadataExtractor      *extractor,
 			tracker_sparql_builder_predicate (metadata, "nfo:aspectRatio");
 			tracker_sparql_builder_object_double (metadata, extractor->aspect_ratio);
 		}
+
+	}
+
+	if (extractor->content == CONTENT_IMAGE ||
+	    extractor->content == CONTENT_VIDEO) {
+		add_geolocation_tags (metadata, preupdate, extractor->tags);
 	}
 
 	if (extractor->dlna_profile) {