Update uplink policy at codec degradation triggered by encoding health monitor (#2942)

---------

Co-authored-by: Shi Su <[email protected]>

Author: shi-su

CHANGELOG.md

@@ -15,6 +15,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Fixed
 
+- Update uplink policy at codec degradation triggered by encoding health monitor.
+
 ## [3.23.0] - 2024-05-14
 
 ### Added

src/task/MonitorTask.ts

@@ -493,6 +493,14 @@ export default class MonitorTask
           this.context.meetingSupportedVideoSendCodecPreferences[0]
         );
         this.context.meetingSupportedVideoSendCodecPreferences = newMeetingSupportedVideoSendCodecPreferences;
+
+        if (this.context.videoUplinkBandwidthPolicy.setMeetingSupportedVideoSendCodecs) {
+          this.context.videoUplinkBandwidthPolicy.setMeetingSupportedVideoSendCodecs(
+            this.context.meetingSupportedVideoSendCodecPreferences,
+            this.context.videoSendCodecPreferences
+          );
+        }
+
         this.context.audioVideoController.update({ needsRenegotiation: true });
       } else {
         this.context.logger.warn(

test/task/MonitorTask.test.ts

@@ -56,6 +56,7 @@ import DefaultVideoTileController from '../../src/videotilecontroller/DefaultVid
 import DefaultVideoTileFactory from '../../src/videotilefactory/DefaultVideoTileFactory';
 import DefaultSimulcastUplinkPolicy from '../../src/videouplinkbandwidthpolicy/DefaultSimulcastUplinkPolicy';
 import NoVideoUplinkBandwidthPolicy from '../../src/videouplinkbandwidthpolicy/NoVideoUplinkBandwidthPolicy';
+import NScaleVideoUplinkBandwidthPolicy from '../../src/videouplinkbandwidthpolicy/NScaleVideoUplinkBandwidthPolicy';
 import DefaultWebSocketAdapter from '../../src/websocketadapter/DefaultWebSocketAdapter';
 import DOMMockBehavior from '../dommock/DOMMockBehavior';
 import DOMMockBuilder from '../dommock/DOMMockBuilder';
@@ -1460,7 +1461,7 @@ describe('MonitorTask', () => {
       ).to.be.true;
     });
 
-    it('should degrade when there is more than one codec preferences', async () => {
+    it('should degrade when there is more than one codec preferences with NScaleVideoUplinkBandwidthPolicy', async () => {
       context.meetingSupportedVideoSendCodecPreferences = [
         VideoCodecCapability.vp9Profile0(),
         VideoCodecCapability.vp8(),
@@ -1469,6 +1470,28 @@ describe('MonitorTask', () => {
         VideoCodecCapability.vp9Profile0(),
         VideoCodecCapability.vp8(),
       ];
+      context.videoUplinkBandwidthPolicy = new NScaleVideoUplinkBandwidthPolicy(
+        'self',
+        true,
+        logger
+      );
+      // @ts-ignore
+      task.degradeVideoCodec();
+      expect(
+        context.meetingSupportedVideoSendCodecPreferences[0].equals(VideoCodecCapability.vp8())
+      ).to.be.true;
+    });
+
+    it('should degrade when there is more than one codec preferences with DefaultSimulcastUplinkPolicy', async () => {
+      context.meetingSupportedVideoSendCodecPreferences = [
+        VideoCodecCapability.vp9Profile0(),
+        VideoCodecCapability.vp8(),
+      ];
+      context.videoSendCodecPreferences = [
+        VideoCodecCapability.vp9Profile0(),
+        VideoCodecCapability.vp8(),
+      ];
+      context.videoUplinkBandwidthPolicy = new DefaultSimulcastUplinkPolicy('self', logger);
       // @ts-ignore
       task.degradeVideoCodec();
       expect(