deepfuze

deepfuze/face_store.py

@@ -0,0 +1,48 @@
+from typing import Optional, List
+import hashlib
+import numpy
+
+from deepfuze.typing import VisionFrame, Face, FaceStore, FaceSet
+
+FACE_STORE: FaceStore =\
+{
+	'static_faces': {},
+	'reference_faces': {}
+}
+
+
+def get_static_faces(vision_frame : VisionFrame) -> Optional[List[Face]]:
+	frame_hash = create_frame_hash(vision_frame)
+	if frame_hash in FACE_STORE['static_faces']:
+		return FACE_STORE['static_faces'][frame_hash]
+	return None
+
+
+def set_static_faces(vision_frame : VisionFrame, faces : List[Face]) -> None:
+	frame_hash = create_frame_hash(vision_frame)
+	if frame_hash:
+		FACE_STORE['static_faces'][frame_hash] = faces
+
+
+def clear_static_faces() -> None:
+	FACE_STORE['static_faces'] = {}
+
+
+def create_frame_hash(vision_frame : VisionFrame) -> Optional[str]:
+	return hashlib.sha1(vision_frame.tobytes()).hexdigest() if numpy.any(vision_frame) else None
+
+
+def get_reference_faces() -> Optional[FaceSet]:
+	if FACE_STORE['reference_faces']:
+		return FACE_STORE['reference_faces']
+	return None
+
+
+def append_reference_face(name : str, face : Face) -> None:
+	if name not in FACE_STORE['reference_faces']:
+		FACE_STORE['reference_faces'][name] = []
+	FACE_STORE['reference_faces'][name].append(face)
+
+
+def clear_reference_faces() -> None:
+	FACE_STORE['reference_faces'] = {}