Setting gamma kindof works

config.py

@@ -23,7 +23,6 @@ Apps = [
     {"guiname": "Dual moodlight", "name": "bimood", "cmd": "apps/bimood", "persistent": False},
     {"guiname": "IDLE", "name": "pixelflut", "cmd": "apps/idle.py", "persistent": False},
     {"guiname": "IDLE2", "name": "idlec", "cmd": "apps/idle2"},
-<<<<<<< HEAD
     {"guiname": "YoutubeDL", "name": "youtubedl", "cmd": "apps/youtubedl.sh", "persistent": False},
     {"guiname": "Stream", "name": "stream", "cmd": "apps/stream.sh", "persistent": False},
     {"guiname": "Wget Video/Gif/Images", "name": "wget", "cmd": "apps/wget.sh", "persistent": False},

html/index.html

@@ -16,6 +16,16 @@
             </form>
         </div>
 
+        <h2>Gamma:</h2>
+        <div id='container'>
+            <form id='gammeform' onSubmit="return setgamma()">
+                Rot: <input id="gammar" value=2.8 /><br/>
+                Grün: <input id="gammag" value=2.65 /><br/>
+                Blau: <input id="gammab" value=2.65 /><br/>
+                <button id="sendgamma">Setzen</button>
+            </form>
+        </div>
+
         <h2>Log:</h2>
         <div id='log'>
             <textarea readonly id='logs' style="width: 500px; height: 500px;"></textarea>
@@ -91,6 +101,15 @@
                 return false;
             }
 
+            function setgamma(){
+                let r = document.getElementById('gammar').value;
+                let g = document.getElementById('gammag').value;
+                let b = document.getElementById('gammab').value;
+                let url = "/setgamma/" + r+"/"+g+"/"+b;
+                getRaw(url, function test(){});
+                return false;
+            }
+
             function updateLog(){
                 getRaw("/apps/log", function(text){
                     document.getElementById('logs').innerText = text;

main.py

@@ -97,7 +97,8 @@ class SerialWriter(threading.Thread):
                     data = self.datasource.getData()
                 with self.cv:
                     if self.updateGamma:
-                        buf = bytearray("\x00")*3*256
+                        buf = bytearray(b"\x00")*3*256
+                        self.updateGamma = False
                         r = self.r
                         g = self.g
                         b = self.b
@@ -105,6 +106,9 @@ class SerialWriter(threading.Thread):
                             gr = int(math.pow(i/255, r)*255)
                             gg = int(math.pow(i/255, g)*255)
                             gb = int(math.pow(i/255, b)*255)
+                            assert gr >= 0 and gr <= 255
+                            assert gg >= 0 and gg <= 255
+                            assert gb >= 0 and gb <= 255
                             buf[i] =gr
                             buf[i+255] = gg
                             buf[i+511] = gb