Bundle dev version of the web-ui

gns3server/static/web-ui/assets/xpra-html5/js/ImageDecoder.js

@@ -0,0 +1,41 @@
+/*
+ * This file is part of Xpra.
+ * Copyright (C) 2021 Tijs van der Zwaan <tijzwa@vpo.nl>
+ * Copyright (c) 2021 Antoine Martin <antoine@xpra.org>
+ * Licensed under MPL 2.0, see:
+ * http://www.mozilla.org/MPL/2.0/
+ *
+ */
+
+class XpraImageDecoder {
+  async convertToBitmap(packet) {
+    const width = packet[4];
+    const height = packet[5];
+    const coding = packet[6];
+    if (coding.startsWith("rgb")) {
+      const data = decode_rgb(packet);
+      const bitmap = await createImageBitmap(new ImageData(new Uint8ClampedArray(data.buffer), width, height), 0, 0, width, height);
+      packet[6] = `bitmap:${coding}`;
+      packet[7] = bitmap;
+    } else {
+      const paint_coding = coding.split("/")[0]; //ie: "png/P" -> "png"
+      const options = packet[10];
+      const bitmap_options = {
+        premultiplyAlpha: "none",
+      };
+      if ("scaled_size" in options) {
+        bitmap_options.resizeWidth = width;
+        bitmap_options.resizeHeight = height;
+        bitmap_options.resizeQuality = options["scaling-quality"] || "medium";
+      }
+
+      const blob = new Blob([packet[7].buffer], {
+        type: `image/${paint_coding}`,
+      });
+      const bitmap = await createImageBitmap(blob, bitmap_options);
+      packet[6] = `bitmap:${coding}`;
+      packet[7] = bitmap;
+    }
+    return packet;
+  }
+}