Added gamma correction to HD output

blup/output.py

@@ -331,13 +331,14 @@ class BLPOutput(Output):
 #
 
 class BlinkenbuntHDOutput(Output):
-    moduleRegexDesc = 'bbunthd[:BRIGHTNESS]'
-    moduleRegex = '^bbunthd(:(?P<brightness>\d+))?$'
+    moduleRegexDesc = 'bbunthd:BRIGHTNESS[:GAMMA]'
+    moduleRegex = '^bbunthd:(?P<brightness>\d+)(:(?P<gamma>\d+(\.\d+)?))?$'
 
-    def __init__(self, brightness):
+    def __init__(self, brightness, gamma=1):
         import neopixel
         self.w = 22
         self.h = 16
+        self.gamma = gamma
         LED_COUNT      = self.w * self.h
         LED_PIN        = 13
         LED_FREQ_HZ    = 800000
@@ -354,8 +355,9 @@ class BlinkenbuntHDOutput(Output):
 
     @classmethod
     def fromRegexMatch(cls, regexMatch):
-        b = int(regexMatch.groupdict().get('brightness', 50))
-        return cls(brightness=b)
+        b = int(regexMatch.group('brightness'))
+        g = float(regexMatch.group('gamma') or 1)
+        return cls(brightness=b, gamma=g)
 
     def sendFrame(self, frame):
         for y in range(self.h):
@@ -365,7 +367,7 @@ class BlinkenbuntHDOutput(Output):
                 else:
                     lednum = x*self.h - y + 15
                 pix = frame.getPixel(self.w - x - 1, self.h - y - 1)
-                r, g, b = pix
+                r, g, b = map(lambda c: round(((c/255)**self.gamma)*255), pix)
                 self.strip.setPixelColor(lednum, self._color_cls(g, r, b))
         self.strip.show()