Dissolve BaseSingleControl into BaseControl and BaseNumericControl.

See #15 (comment) .

v4l2py/device.py

@@ -827,7 +827,7 @@ def with_class(self, control_class):
 
     def set_to_default(self):
         for v in self.values():
-            if not isinstance(v, BaseSingleControl):
+            if not isinstance(v, BaseControl):
                 continue
 
             try:
@@ -855,11 +855,14 @@ def __init__(self, device, info):
         self._config_name = None
         self.control_class = ControlClass(raw.V4L2_CTRL_ID2CLASS(self.id))
         self.type = ControlType(self._info.type)
+
         try:
             self.standard = ControlID(self.id)
         except ValueError:
             self.standard = None
 
+        self.default = self._info.default_value
+
     def __repr__(self):
         repr = f"{self.config_name}"
 
@@ -891,6 +894,34 @@ def config_name(self) -> str:
             self._config_name = res
         return self._config_name
 
+    @property
+    def value(self):
+        if not self.is_writeonly:
+            return get_control(self.device, self.id)
+        else:
+            return None
+
+    @value.setter
+    def value(self, value):
+        if not self.is_writeable:
+            reasons = []
+            if self.is_readonly:
+                reasons.append("read-only")
+            if self.is_inactive:
+                reasons.append("inactive")
+            if self.is_disabled:
+                reasons.append("disabled")
+            if self.is_grabbed:
+                reasons.append("grabbed")
+            raise AttributeError(f"Control {self.config_name} is not writeable: {', '.join(reasons)}")
+        if value < self.minimum:
+            v = self.minimum
+        elif value > self.maximum:
+            v = self.maximum
+        else:
+            v = value
+        set_control(self.device, self.id, v)
+
     @property
     def is_writeonly(self) -> bool:
         return (self._info.flags & ControlFlag.WRITE_ONLY) == ControlFlag.WRITE_ONLY
@@ -916,50 +947,27 @@ def is_writeable(self) -> bool:
         return not (self.is_readonly or self.is_inactive
                     or self.is_disabled or self.is_grabbed)
 
+    def set_to_default(self):
+        self.value = self.default
+
 
-class BaseSingleControl(BaseControl):
+class BaseNumericControl(BaseControl):
     def __init__(self, device, info):
         super().__init__(device, info)
         self.minimum = self._info.minimum
         self.maximum = self._info.maximum
         self.step = self._info.step
-        self.default = self._info.default_value
 
     def _get_repr(self) -> str:
         repr = f" min={self.minimum} max={self.maximum}"
         repr += f" step={self.step} default={self.default}"
         return repr
 
-    @property
-    def value(self):
-        if not self.is_writeonly:
-            return get_control(self.device, self.id)
-        else:
-            return None
-
-    @value.setter
-    def value(self, value):
-        if not self.is_writeable:
-            reasons = []
-            if self.is_readonly:
-                reasons.append("read-only")
-            if self.is_inactive:
-                reasons.append("inactive")
-            if self.is_disabled:
-                reasons.append("disabled")
-            if self.is_grabbed:
-                reasons.append("grabbed")
-            raise AttributeError(f"Control {self.config_name} is not writeable: {', '.join(reasons)}")
-        if value < self.minimum:
-            v = self.minimum
-        elif value > self.maximum:
-            v = self.maximum
-        else:
-            v = value
-        set_control(self.device, self.id, v)
+    def increase(self, steps: int = 1):
+        self.value += (steps * self.step)
 
-    def set_to_default(self):
-        self.value = self.default
+    def decrease(self, steps: int = 1):
+        self.value -= (steps * self.step)
 
     def set_to_minimum(self):
         self.value = self.minimum
@@ -973,7 +981,7 @@ def __init__(self, device, info):
         raise NotImplementedError()
 
 
-class LegacyControl(BaseSingleControl):
+class LegacyControl(BaseNumericControl):
     def __init__(self, device, info):
         super().__init__(device, info)