fixed error "Failed to get convolution algorithm" on some systems

fixed error "dll load failed" on some systems
Expanded eyebrows line of face masks. It does not affect mask of FAN-x converter mode.

samplelib/SampleGeneratorBase.py

@@ -13,7 +13,18 @@ class SampleGeneratorBase(object):
         self.samples_path = Path(samples_path)
         self.debug = debug
         self.batch_size = 1 if self.debug else batch_size
-
+        self.last_generation = None
+        self.active = True
+        
+    def set_active(self, is_active):
+        self.active = is_active
+        
+    def generate_next(self):
+        if not self.active and self.last_generation is not None:
+            return self.last_generation
+        self.last_generation = next(self)
+        return self.last_generation
+        
     #overridable
     def __iter__(self):
         #implement your own iterator