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/* Copyright 2016 Software Freedom Conservancy Inc.
*
* This software is licensed under the GNU Lesser General Public License
* (version 2.1 or later). See the COPYING file in this distribution.
*/
public class FaceLocation : Object {
private static Gee.Map<FaceID?, Gee.Map<PhotoID?, FaceLocation>> face_photos_map;
private static Gee.Map<PhotoID?, Gee.Map<FaceID?, FaceLocation>> photo_faces_map;
private FaceLocationID face_location_id;
private FaceID face_id;
private PhotoID photo_id;
private string geometry;
private FaceLocation(FaceLocationID face_location_id, FaceID face_id, PhotoID photo_id,
string geometry) {
this.face_location_id = face_location_id;
this.face_id = face_id;
this.photo_id = photo_id;
this.geometry = geometry;
}
public static FaceLocation create(FaceID face_id, PhotoID photo_id, string geometry) {
FaceLocation face_location = null;
// Test if that FaceLocation already exists (that face in that photo) ...
Gee.Map<PhotoID?, FaceLocation> photos_map = face_photos_map.get(face_id);
Gee.Map<FaceID?, FaceLocation> faces_map = photo_faces_map.get(photo_id);
if (photos_map != null && faces_map != null && faces_map.has_key(face_id)) {
face_location = faces_map.get(face_id);
if (face_location.get_serialized_geometry() != geometry) {
face_location.set_serialized_geometry(geometry);
try {
FaceLocationTable.get_instance().update_face_location_serialized_geometry(
face_location);
} catch (DatabaseError err) {
AppWindow.database_error(err);
}
}
return face_location;
}
// ... or create a new FaceLocation.
try {
face_location =
FaceLocation.add_from_row(
FaceLocationTable.get_instance().add(face_id, photo_id, geometry));
} catch (DatabaseError err) {
AppWindow.database_error(err);
}
return face_location;
}
public static void destroy(FaceID face_id, PhotoID photo_id) {
Gee.Map<PhotoID?, FaceLocation> photos_map = face_photos_map.get(face_id);
Gee.Map<FaceID?, FaceLocation> faces_map = photo_faces_map.get(photo_id);
assert(photos_map != null);
assert(faces_map != null);
faces_map.unset(face_id);
if (faces_map.size == 0)
photo_faces_map.unset(photo_id);
photos_map.unset(photo_id);
if (photos_map.size == 0)
face_photos_map.unset(face_id);
try {
FaceLocationTable.get_instance().remove_face_from_source(face_id, photo_id);
} catch (DatabaseError err) {
AppWindow.database_error(err);
}
}
public static FaceLocation add_from_row(FaceLocationRow row) {
FaceLocation face_location =
new FaceLocation(row.face_location_id, row.face_id, row.photo_id, row.geometry);
Gee.Map<PhotoID?, FaceLocation> photos_map = face_photos_map.get(row.face_id);
if (photos_map == null) {photos_map = new Gee.HashMap<PhotoID?, FaceLocation>
((Gee.HashDataFunc)FaceLocation.photo_id_hash, (Gee.EqualDataFunc)FaceLocation.photo_ids_equal);
face_photos_map.set(row.face_id, photos_map);
}
photos_map.set(row.photo_id, face_location);
Gee.Map<FaceID?, FaceLocation> faces_map = photo_faces_map.get(row.photo_id);
if (faces_map == null) {faces_map = new Gee.HashMap<FaceID?, FaceLocation>
((Gee.HashDataFunc)FaceLocation.face_id_hash, (Gee.EqualDataFunc)FaceLocation.face_ids_equal);
photo_faces_map.set(row.photo_id, faces_map);
}
faces_map.set(row.face_id, face_location);
return face_location;
}
public static Gee.Map<FaceID?, FaceLocation>? get_locations_by_photo(Photo photo) {
return photo_faces_map.get(photo.get_photo_id());
}
public static Gee.Map<PhotoID?, FaceLocation>? get_locations_by_face(Face face) {
return face_photos_map.get(face.get_face_id());
}
public static Gee.Set<PhotoID?>? get_photo_ids_by_face(Face face) {
Gee.Map<PhotoID?, FaceLocation>? photos_map = face_photos_map.get(face.get_face_id());
if (photos_map == null)
return null;
return photos_map.keys;
}
public static FaceLocation? get_face_location(FaceID face_id, PhotoID photo_id) {
Gee.Map<FaceID?, FaceLocation>? faces_map = photo_faces_map.get(photo_id);
if (faces_map == null)
return null;
return faces_map.get(face_id);
}
public static bool photo_ids_equal(void *a, void *b) {
PhotoID *aid = (PhotoID *) a;
PhotoID *bid = (PhotoID *) b;
return aid->id == bid->id;
}
public static bool face_ids_equal(void *a, void *b) {
FaceID *aid = (FaceID *) a;
FaceID *bid = (FaceID *) b;
return aid->id == bid->id;
}
public static uint photo_id_hash(void *p) {
// Rotating XOR hash
uint8 u8 = (uint8) ((PhotoID *) p)->id;
uint hash = 0;
for (int ctr = 0; ctr < (sizeof(int64) / sizeof(uint8)); ctr++) {
hash = (hash << 4) ^ (hash >> 28) ^ (u8++);
}
return hash;
}
public static uint face_id_hash(void *p) {
// Rotating XOR hash
uint8 u8 = (uint8) ((FaceID *) p)->id;
uint hash = 0;
for (int ctr = 0; ctr < (sizeof(int64) / sizeof(uint8)); ctr++) {
hash = (hash << 4) ^ (hash >> 28) ^ (u8++);
}
return hash;
}
public static void init(ProgressMonitor? monitor) {
face_photos_map = new Gee.HashMap<FaceID?, Gee.HashMap<PhotoID?, FaceLocation>>
((Gee.HashDataFunc)face_id_hash, (Gee.EqualDataFunc)face_ids_equal);
photo_faces_map = new Gee.HashMap<PhotoID?, Gee.HashMap<FaceID?, FaceLocation>>
((Gee.HashDataFunc)photo_id_hash, (Gee.EqualDataFunc)photo_ids_equal);
// scoop up all the rows at once
Gee.List<FaceLocationRow?> rows = null;
try {
rows = FaceLocationTable.get_instance().get_all_rows();
} catch (DatabaseError err) {
AppWindow.database_error(err);
}
// turn them into FaceLocation objects
int count = rows.size;
for (int ctr = 0; ctr < count; ctr++) {
FaceLocation.add_from_row(rows.get(ctr));
if (monitor != null)
monitor(ctr, count);
}
}
public static void terminate() {
}
public FaceLocationID get_face_location_id() {
return face_location_id;
}
public string get_serialized_geometry() {
return geometry;
}
private void set_serialized_geometry(string geometry) {
this.geometry = geometry;
}
}
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