fromOctet()

dist/lib/frame.d.ts

@@ -21,6 +21,7 @@ export declare class Frame {
      * @returns {Uint8Array}
      */
     toOctet(): Uint8Array;
+    fromOctet(octet: Uint8Array): void;
     /**
      * Get the number of LEDs in this frame
      *

dist/lib/frame.js

@@ -1,3 +1,4 @@
+import { Led } from "./led.js";
 /**
  * A frame of LEDs, used when you wish to set color pixel by pixel
  *
@@ -30,6 +31,15 @@ export class Frame {
         });
         return output;
     }
+    fromOctet(octet) {
+        let offset = 0;
+        this.leds = Array.from({ length: octet.length / 3 }, () => {
+            const led = new Led(0, 0, 0);
+            led.fromOctet(octet.slice(offset, offset + 3));
+            offset += 3;
+            return led;
+        });
+    }
     /**
      * Get the number of LEDs in this frame
      *

dist/lib/led.d.ts

@@ -23,6 +23,7 @@ export declare class Led {
      * @returns {Uint8Array} The RGB values in a Uint8Array format.
      */
     toOctet(): Uint8Array;
+    fromOctet(octet: Uint8Array): void;
     /**
      * Checks if the LED color is turned on (non-zero).
      *

dist/lib/led.js

@@ -26,6 +26,11 @@ export class Led {
     toOctet() {
         return new Uint8Array([this.red, this.green, this.blue]);
     }
+    fromOctet(octet) {
+        this.red = octet[0];
+        this.green = octet[1];
+        this.blue = octet[2];
+    }
     /**
      * Checks if the LED color is turned on (non-zero).
      *

dist/lib/movie.d.ts

@@ -20,5 +20,6 @@ export declare class Movie {
         fps: number;
     };
     toOctet(): Uint8Array;
+    fromOctet(octet: Uint8Array): void;
     size(isCompressed?: boolean): number;
 }

dist/lib/movie.js

@@ -1,3 +1,4 @@
+import { Frame } from "./frame.js";
 export class Movie {
     constructor(data) {
         // Required for toOctet()
@@ -52,6 +53,22 @@ export class Movie {
         // this.frameData = output;
         return output; //.buffer;
     }
+    fromOctet(octet) {
+        const nFrames = this.frames_number;
+        const nLeds = this.leds_per_frame;
+        const nBytes = nFrames * nLeds * 3;
+        if (octet.length != nBytes)
+            throw new Error(`Octet length (${octet.length}) does not match expected length (${nBytes})`);
+        const frames = [];
+        for (let i = 0; i < nFrames; i++) {
+            const offset = i * nLeds * 3;
+            const frameOctet = octet.slice(offset, offset + nLeds * 3);
+            const frame = new Frame([]);
+            frame.fromOctet(frameOctet);
+            frames.push(frame);
+        }
+        this.frameData = frames;
+    }
     size(isCompressed = false) {
         let nBytes = 0;
         // for each frame, determine number of leds

src/lib/frame.ts

@@ -36,6 +36,16 @@ export class Frame {
     return output;
   }
 
+  fromOctet(octet: Uint8Array) {
+    let offset = 0;
+    this.leds = Array.from({ length: octet.length / 3 }, () => {
+      const led = new Led(0, 0, 0);
+      led.fromOctet(octet.slice(offset, offset + 3));
+      offset += 3;
+      return led;
+    });
+  }
+
   /**
    * Get the number of LEDs in this frame
    *

src/lib/led.ts

@@ -34,6 +34,12 @@ export class Led {
     return new Uint8Array([this.red, this.green, this.blue]);
   }
 
+  fromOctet(octet: Uint8Array) {
+    this.red = octet[0];
+    this.green = octet[1];
+    this.blue = octet[2];
+  }
+
   /**
    * Checks if the LED color is turned on (non-zero).
    *

src/lib/movie.ts

@@ -70,6 +70,25 @@ export class Movie {
     // this.frameData = output;
     return output; //.buffer;
   }
+  fromOctet(octet: Uint8Array) {
+    const nFrames = this.frames_number;
+    const nLeds = this.leds_per_frame;
+    const nBytes = nFrames * nLeds * 3;
+    if (octet.length != nBytes)
+      throw new Error(
+        `Octet length (${octet.length}) does not match expected length (${nBytes})`
+      );
+
+    const frames = [];
+    for (let i = 0; i < nFrames; i++) {
+      const offset = i * nLeds * 3;
+      const frameOctet = octet.slice(offset, offset + nLeds * 3);
+      const frame = new Frame([]);
+      frame.fromOctet(frameOctet);
+      frames.push(frame);
+    }
+    this.frameData = frames;
+  }
   size(isCompressed: boolean = false) {
     let nBytes = 0;
     // for each frame, determine number of leds