add decoder for universe

src/decoders/index.ts

@@ -1,5 +1,6 @@
 import ChannelBlock from './lighting/channel-block';
 import Spot from './lighting/spot';
+import Universe from './lighting/universe';
 import CentroidAccelVelocity from './motion/centroid-accel-velocity';
 import CentroidPosition from './motion/centroid-position';
 import OrientationEuler from './motion/orientation-euler';
@@ -26,4 +27,5 @@ export const Decoders = {
   ZoneObject,
   Spot,
   ChannelBlock,
+  Universe,
 };

src/decoders/lighting/spot.ts

@@ -13,7 +13,7 @@ export default (bytes: Uint8Array, isLittleEndian: boolean = false): Spot => {
 
   const size = view.getUint16(dataOffset, isLittleEndian);
   dataOffset += 2;
-  if (size !== bytes.byteLength) {
+  if (size < bytes.byteLength) {
     throw new Error('Spot module size mismatch');
   }
   const id = view.getUint16(dataOffset, isLittleEndian);

src/decoders/lighting/universe.ts

@@ -0,0 +1,41 @@
+import { Decoders } from '..';
+import { Spot, Universe } from '../../models';
+
+export default (bytes: Uint8Array, isLittleEndian: boolean = false): Universe => {
+  const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength);
+
+  let dataOffset = 0;
+  const type = view.getUint8(dataOffset);
+  dataOffset += 1;
+  if (type !== 0x09) {
+    throw new Error('Universe module must have a type of 0x09');
+  }
+
+  const size = view.getUint16(dataOffset, isLittleEndian);
+  dataOffset += 2;
+  if (size !== bytes.byteLength) {
+    throw new Error('Universe module size mismatch');
+  }
+  const id = view.getUint16(dataOffset, isLittleEndian);
+  dataOffset += 2;
+  const numberOfSpots = view.getUint16(dataOffset, isLittleEndian);
+  dataOffset += 2;
+
+  const spots: Spot[] = [];
+  let spotOffset = dataOffset;
+
+  for (let index = 0; index < numberOfSpots; index++) {
+    const spotData = bytes.subarray(spotOffset);
+    console.log(spotData);
+    const spot = Decoders.Spot(spotData);
+    spots.push(spot);
+    spotOffset += spot.size;
+  }
+  return {
+    type,
+    size,
+    id,
+    numberOfSpots,
+    spots,
+  };
+};

src/models.ts

@@ -115,6 +115,14 @@ export type ZoneObject = {
   name: string;
 };
 
+export type Universe = {
+  type: number;
+  size: number;
+  id: number;
+  numberOfSpots: number;
+  spots: Spot[];
+};
+
 export type Spot = {
   type: number;
   size: number;