Add rid to VideoSubscriptionConstraints.

Author: jianjunz

docs/mdfiles/changelog.md

@@ -3,6 +3,7 @@ Change Log
 # 4.3
 * The type of `conferenceClient.publish` method's option is changed from `AudioEncodingParameters` and `VideoEncodingParameters` to `RTCRtpSendParameters`.
 * `audio` and `video` of `PublicationSettings` is changed from `AudioPublicationSettings` and `VideoPublicationSettings` to `AudioPublicationSettings` array and `VideoPublicationSettings` array.
+* Add `rid` to `VideoSubscriptionConstraints`. When `rid` is specified, other constraints will be ignored.
 
 # 4.0.2
 * Fix a compatibility issue for Chrome 69 beta.

src/sdk/conference/channel.js

@@ -322,6 +322,7 @@ export class ConferencePeerConnectionChannel extends EventDispatcher {
           bitrate: options.video.bitrateMultiplier ? 'x'
               + options.video.bitrateMultiplier.toString() : undefined,
           keyFrameInterval: options.video.keyFrameInterval,
+          simulcastRid: options.video.rid
         };
       }
     } else {

src/sdk/conference/subscription.js

@@ -121,7 +121,7 @@ export class AudioSubscriptionConstraints {
 export class VideoSubscriptionConstraints {
   // eslint-disable-next-line require-jsdoc
   constructor(codecs, resolution, frameRate, bitrateMultiplier,
-      keyFrameInterval) {
+      keyFrameInterval, rid) {
     /**
      * @member {?Array.<Owt.Base.VideoCodecParameters>} codecs
      * @instance
@@ -157,6 +157,13 @@ export class VideoSubscriptionConstraints {
      * @desc Only keyFrameIntervals listed in Owt.Conference.VideoSubscriptionCapabilities are allowed.
      */
     this.keyFrameInterval = keyFrameInterval;
+    /**
+     * @member {?number} rid
+     * @instance
+     * @memberof Owt.Conference.VideoSubscriptionConstraints
+     * @desc Restriction identifier to identify the RTP Streams within an RTP session. When rid is specified, other constraints will be ignored.
+     */
+    this.rid = rid;
   }
 }