rfb: Add method to request key frame

novnc · Jul 8, 2024 · 1c93b9f · 1c93b9f
1 parent 7fcf9dc
commit 1c93b9f
Showing 1 changed file with 13 additions and 1 deletion.
diff --git a/core/rfb.js b/core/rfb.js
@@ -169,6 +169,7 @@ export default class RFB extends EventTargetMixin {
 
         // Decoder states
         this._decoders = {};
+        this._keyFrameNeeded = false;
 
         this._FBU = {
             rects: 0,
@@ -804,6 +805,15 @@ export default class RFB extends EventTargetMixin {
                    size.w + 'x' + size.h);
     }
 
+    _requestKeyFrame() {
+        if (this._enabledContinuousUpdates) {
+            RFB.messages.fbUpdateRequest(this._sock, false, 0, 0,
+                                         this._fbWidth, this._fbHeight);
+        } else {
+            this._keyFrameNeeded = true;
+        }
+    }
+
     // Gets the the size of the available screen
     _screenSize() {
         let r = this._screen.getBoundingClientRect();
@@ -2447,7 +2457,9 @@ export default class RFB extends EventTargetMixin {
             case 0:  // FramebufferUpdate
                 ret = this._framebufferUpdate();
                 if (ret && !this._enabledContinuousUpdates) {
-                    RFB.messages.fbUpdateRequest(this._sock, true, 0, 0,
+                    const incremental = !this._keyFrameNeeded;
+                    this._keyFrameNeeded = false;
+                    RFB.messages.fbUpdateRequest(this._sock, incremental, 0, 0,
                                                  this._fbWidth, this._fbHeight);
                 }
                 return ret;