Add novnc folder

novnc/core/decoders/raw.js

@@ -0,0 +1,59 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2019 The noVNC Authors
+ * Licensed under MPL 2.0 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ *
+ */
+
+export default class RawDecoder {
+    constructor() {
+        this._lines = 0;
+    }
+
+    decodeRect(x, y, width, height, sock, display, depth) {
+        if ((width === 0) || (height === 0)) {
+            return true;
+        }
+
+        if (this._lines === 0) {
+            this._lines = height;
+        }
+
+        const pixelSize = depth == 8 ? 1 : 4;
+        const bytesPerLine = width * pixelSize;
+
+        while (this._lines > 0) {
+            if (sock.rQwait("RAW", bytesPerLine)) {
+                return false;
+            }
+
+            const curY = y + (height - this._lines);
+
+            let data = sock.rQshiftBytes(bytesPerLine, false);
+
+            // Convert data if needed
+            if (depth == 8) {
+                const newdata = new Uint8Array(width * 4);
+                for (let i = 0; i < width; i++) {
+                    newdata[i * 4 + 0] = ((data[i] >> 0) & 0x3) * 255 / 3;
+                    newdata[i * 4 + 1] = ((data[i] >> 2) & 0x3) * 255 / 3;
+                    newdata[i * 4 + 2] = ((data[i] >> 4) & 0x3) * 255 / 3;
+                    newdata[i * 4 + 3] = 255;
+                }
+                data = newdata;
+            }
+
+            // Max sure the image is fully opaque
+            for (let i = 0; i < width; i++) {
+                data[i * 4 + 3] = 255;
+            }
+
+            display.blitImage(x, curY, width, 1, data, 0);
+            this._lines--;
+        }
+
+        return true;
+    }
+}